Produits et services

Road rollers; excavators; diggers [machines]; hydraulic pumps; elevating apparatus; mixing machines; air pumps [garage installations]; railroad constructing machines; concrete mixers [machines]; bulldozers; concrete pumps; trailer-mounted concrete pumps; hydraulic graders; road paving machines; cranes for handling containers; boom-type roadheader; hoists; rail-laying machines; road building machines; railroad constructing machines; hydraulic components, excluding hydraulic system for vehicles; beating machines; scarifiers [machines]; scrapers [earth moving machines]; pile drivers; mud dredging machines; multifunctional road maintenance machines; concrete placing machines; concrete vibrators; compactors; sorting machines for industry; handling apparatus for loading and unloading; conveyors [machines]; attachments for cranes, namely, electro-magnet chuck; pumps [machines]; oil pumps for land vehicles; valves [parts of machines]; hydraulic valves; hydraulic controls for machines, motors and engines; pneumatic controls for machines, motors and engines; compressors [machines]; pneumatic transporters; machines for maintenance and repair of vehicles.

Abrégé

A tension sensor comprises a barrel (1), a sealing partition plate (2), a connection portion (3), a hydraulic detection apparatus (4), and a calculation apparatus (5). The sealing partition plate (2) is disposed on the connection portion (3). The sealing partition plate (2) partitions the barrel into a first chamber (7) and a second chamber (8). The first chamber or the second chamber is filled with hydraulic oil. The hydraulic detection apparatus (4) is used for detecting the intensity of pressure of the hydraulic oil. The calculation apparatus (5) calculates the tension according to the intensity of pressure and the stress area of the first chamber or the second chamber. The present invention is a new tension sensor provided based on a new working principle, the tension sensor can replace a traditional sensor, and has the advantages that the tension sensor is simple to produce and manufacture, has low cost, and produces a small measurement error and the like, and is especially applicable to measurement of large load. The present invention also provides a moment limiter and a crane based on the tension sensor.

Classes IPC  ?

• B66C 23/88 - Mécanisme de sécurité
• B66C 13/16 - Utilisation de dispositifs indicateurs de positionnement ou de pesée
• G01L 5/04 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de la tension dans les éléments flexibles, p. ex. dans les cordages, les câbles, les fils métalliques, les filaments, les courroies ou les bandes
• G01L 1/00 - Mesure des forces ou des contraintes, en général

Abrégé

A device for measuring the compaction depth of an oil cylinder type dynamic compactor, the device comprising: a linear displacement detecting device (71) for detecting the stroke of a lift cylinder (1); a processor (72) connecting to the linear displacement detecting device (71), and calculating the compaction depth each time a tamper (G) tamps according to the stroke of the lift cylinder (1) and the multiplying power K of a pulley block; and the device further comprises a display device (73), an alarm device (74), a pressure sensor (1a), etc. Also disclosed are a dynamic compactor having the device for measuring the compaction depth of an oil cylinder type dynamic compactor, and a method for measuring the compaction depth of the oil cylinder type dynamic compactor, such that the compaction depth each time the tamper (G) tamps can be calculated according to the stroke of the lift cylinder (1) and the multiplying power K of a pulley block, thus automatically measuring the compaction depth, and having the advantages of high accuracy of measurement, low cost, and good reliability.

Classes IPC  ?

• G01B 21/18 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la profondeur
• E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation
• E02D 33/00 - Test des fondations

Abrégé

The present invention provides a method and an apparatus for measuring a compacting depth of an oil cylinder-type dynamic compactor, and the dynamic compactor. The apparatus for measuring a compacting depth of an oil cylinder-type dynamic compactor comprises: a straight-line displacement detecting apparatus, used for detecting a travel of a lifting oil cylinder; and a processor, connected to the straight-line displacement detecting apparatus and used for calculating a compacting depth of a compacting hammer each time according to the travel of the lifting oil cylinder and a multiplying power K of a pulley block. The apparatus for measuring a compacting depth of an oil cylinder-type dynamic compactor may also comprise a display apparatus, an alarm apparatus, a pressure sensor, or the like. By using the present invention, a compacting depth can be automatically measured, and the present invention has the advantages such as high measurement precision, low cost, and good reliability.

Classes IPC  ?

• G01B 21/18 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la profondeur
• E02D 3/054 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol impliquant une pénétration dans le sol, p. ex. vibro-flottation

Abrégé

In one aspect of the disclosure, a cylinder-driven lifting mechanism of a compaction machine includes a cylinder having a first end and a second end, a fixed pulley set, a movable pulley set, a rope having a head end, and a tail end configured to connect a compaction hammer. The first end of the cylinder is connected to a vehicle body of the compaction machine and the second end of the cylinder is connected to the movable pulley set. The rope is wound on the fixed pulley set and the movable pulley set and is then connected to the compaction hammer. When the cylinder performs extension and refraction movement, the movable pulley set moves with the cylinder, the distance between the movable pulley set and the fixed pulley set increases or decreases, and the compaction hammer connected to the tail end of the rope is lifted up or dropped respectively.

Classes IPC  ?

• B66D 3/20 - Palans à moteur à moteur d'entraînement, p. ex. le moteur électrique, tambour ou cylindre dans le même carter
• E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol

Abrégé

Disclosed is an oil cylinder-driven compaction machine lifting mechanism used in a non-detachable compaction machine, the lifting mechanism comprising an oil cylinder (1), a fixed pulley block (2), a movable pulley block (3) and a rope (5) connected to a rammer (G), wherein a first end of the oil cylinder (1) is connected to a body of the compaction machine and a second end thereof is connected to the movable pulley block (3); the rope (5) is connected to the rammer (G) after it is wound around the fixed pulley block (2) and the movable pulley block (3); when the oil cylinder (1) performs a telescopic movement, the movable pulley block (3) moves along with the oil cylinder (1), the distance between the movable pulley block (3) and the fixed pulley block (2) increases or decreases, and the end of the rope (5) accordingly raises up or falls down. Further disclosed is a compaction machine comprising the lifting mechanism. According to the present invention, by means of using the oil cylinder (1) to drive the movable pulley block (3) and using the fixed and movable pulley blocks (2, 3) to expand the trip, the structure is simple, the maintenance is convenient, the operation is stable, the reliability is high, and the compacting energy loss is small.

Classes IPC  ?

• E02D 3/046 - Amélioration par compactage par damage ou par vibrations, p. ex. avec détrempage auxiliaire du sol

Abrégé

A leg control system is provided which comprises a command transmitting unit (1), leg controllers (2) and electromagnetic valves (3) for controlling actions of a plurality of legs (4). The command transmitting unit (1) is used for transmitting a leg control command; and the leg controllers (2) simultaneously transmit action instructions to the electromagnetic valves (3) of the legs (4) according to the received leg control command transmitted from the command transmitting unit (1); and the electromagnetic valves (3) are reversed according to the control instructions so as to control the actions of the legs. Correspondingly, an engineering machine is provided. According to the technical solution of the leg control system, the legs can be controlled simultaneously, and the problems like uneven stress induced by single leg control are avoided.

Classes IPC  ?

• G05B 19/4155 - Commande numérique [CN], c.-à-d. machines fonctionnant automatiquement, en particulier machines-outils, p. ex. dans un milieu de fabrication industriel, afin d'effectuer un positionnement, un mouvement ou des actions coordonnées au moyen de données d'un programme sous forme numérique caractérisée par le déroulement du programme, c.-à-d. le déroulement d'un programme de pièce ou le déroulement d'une fonction machine, p. ex. choix d'un programme

Abrégé

A pump truck dredge control system comprises: a material discharging height collection unit (101) for collecting information about a current material discharging height of a pump truck; a pumping status collection unit (102) for collecting current pumping status information of the pump truck; a processor (104) for presetting a pumping status threshold corresponding to a material discharging height, determining the current pumping status threshold based on the information about the current material discharging height of the pump truck, comparing the current pumping status information and the current pumping status threshold, determining a pipe blockage fault when the current pumping status information is larger than or equal to the current pumping status threshold, and sending an action signal to a control element (106); and the control element (106) for performing a corresponding operation based on the action signal to remove the pipe blockage fault. Further disclosed are a pump truck dredge control method and a pump truck. The pump truck dredge control system, control method, and pump truck can accurately determine a pipe blockage fault, give a warning effectively, and take an effective measure to solve a pipe blockage fault.

Classes IPC  ?

• G05B 19/048 - ContrôleSécurité
• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés
• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes
• B28C 5/08 - Appareillages ou procédés pour la production de mélanges de ciment avec d'autres substances, p. ex. coulis, mortiers, compositions poreuses ou fibreuses utilisant des moyens mécaniques d'entraînement pour effectuer le mélange

Abrégé

A line multiplexing apparatus comprises an input multiplexing circuit board (106) and a controller (102). The input multiplexing circuit board (106) comprises a plurality of first input ports and at least one first output port, and the plurality of first input ports is connected to corresponding signal sources (108) respectively. The controller (102) sends a signal source selection command to the input multiplexing circuit board (106) based on a current real-time condition. The input multiplexing circuit board (106) selects the first input port based on the signal source selection command sent by the controller (102), and conducts a signal transmission line between the selected first input port and the corresponding first output port to obtain corresponding signals. Further proposed is engineering machinery comprising the line multiplexing apparatus. The present invention can reduce the line complexity and meet application demands of multiple ports, thereby optimizing resource utilization and reducing the system cost.

Classes IPC  ?

• G08C 15/00 - Dispositions caractérisées par l'utilisation du multiplexage pour la transmission de plusieurs signaux par une voie commune

Abrégé

Disclosed is a concrete placing boom, comprising a base (3), and a placing arm (1) and a placing tube (2) both provided on the base (3), wherein the base comprises a base frame (31), telescopic legs (32) for supporting the base frame (31), and leg seats (33) in the same number as that of the telescopic legs (32); the telescopic legs (32) comprise first leg arms (321) and second leg arms (322), with one end of the first leg arms (321) being connected to the base frame (31) and the other end being telescopically connected to the second leg arms (322), and one end of the second leg arms (322) being articulated to the leg seats (33) and the other end thereof being telescopically connected to the first leg arms (321). By means of the telescopic structure of the first leg arms (321) and the second leg arms (322), the placing boom is able to adjust the whole length of the telescopic legs (32) as required, and in turn to adjust the height of the placing arm (1) and the placing tube (2) above the ground such that the inconvenience due to the height of the placing boom (1) and the placing tube (2) above the ground being insufficient can be avoided or reduced, improving the adaptability thereof efficiently.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A split type crane at least includes a crane body (1), an arm (3), a luffing mechanism and a lifting mechanism, wherein the crane body is detachably fixed on a ship body (2). A lower end of the arm (3) is hinged to the ship body (2) or the crane body (1) optionally. When hinged to the ship body (2), the arm is used for water surface lifting; and when hinged to the crane body (1), the arm is used for road surface lifting. The luffing mechanism is used for adjusting the luffing range of the arm, and the lifting mechanism is used for the elevating operation of a lifting hook. The present invention can be used for water surface lifting and road surface lifting, can achieve multiple purposes, and has the advantages of wide applicability, stability, good flexibility and the like.

Classes IPC  ?

• B66C 23/36 - Installations comportant essentiellement un palonnier, une flèche ou une structure triangulaire agissant comme bras de levier, montées de façon à permettre des mouvements de translation ou d'orientation dans des plans verticaux ou horizontaux, ou bien une combinaison de ces mouvements, p. ex. grues à flèche, derricks ou grues sur tours spécialement adaptées pour être utilisées dans des emplacements particuliers ou à des usages particuliers montées sur véhicules routiers ou ferroviairesGrues à flèche à manœuvre manuelle pour utilisation dans les ateliersGrues flottantes
• B66C 23/52 - Grues flottantes
• B66C 23/62 - Caractéristiques de structure ou détails

Abrégé

A clutch and an engineering machinery. The clutch comprises a driving disk (11), a driven disk (12), an output shaft (13) and a hydraulic control mechanism. The driving disk (11) is coaxially linked with an input shaft (6) and is provided with a plunger chamber (111). A plunger (9) is arranged in the plunger chamber and is hermetically fit with the inner wall of the plunger chamber (111). The driven disk (12) is sleeved on the periphery of the driving disk (11) and is provided with a plunger groove (121) which is opposite to the plunger chamber (111). The output shaft (13) is coaxially linked with the driven disk (12). The hydraulic control mechanism is used for supplying oil to the plunger chamber (111). As the plunger (9) on the driving disk (11) directly acts on the driven disk (12) to implement the transmission of the power, and the hydraulic control mechanism controls the linkage relationship between the plunger (9) and the driven disk (12), the clutch can realize the functions of inputting or switching off the power. The clutch has the advantages of smooth power engagement, and less wear between the plunger and a cylinder.

Classes IPC  ?

• F16D 25/12 - Éléments constitutifs non particuliers à l'un des types mentionnés ci-dessus
• F16D 25/061 - Embrayages actionnés par fluide dans lesquels le fluide actionne un piston incorporé dans l'embrayage l'embrayage comportant des organes qui se pénètrent mutuellement

Abrégé

Disclosed is a high and low pressure integrated water sprinkler system, comprising a water pump (3), a power source (6), a low pressure waterway and a high pressure waterway, wherein a water inlet of the water pump (3) is connected to the water source; the power source (6) is connected to the water pump (3); a water outlet of the water pump (3) is respectively connected to the low pressure waterway and the high pressure waterway; and the water outlet of the water pump (3) is further connected to a switch device (4) for selectively switching into conduction with the low pressure waterway. Further disclosed is engineering machinery with the water sprinkler system. The water sprinkler system has a simple structure, and is able to separately control the high pressure or the low pressure waterway.

Classes IPC  ?

• E01C 23/088 - Outils rotatifs, p. ex. tambours de fraisage

Abrégé

Disclosed are a bearing lubrication apparatus and engineering machinery. The bearing lubrication apparatus comprises a bearing housing (1). A mounting position (22) for mounting a bearing (2) is provided on the bearing housing (1), and an oil storage funnel (11), an oil collecting groove (12) and an oil guiding hole (13) are further provided on a side wall of the bearing housing (1). The oil storage funnel (11) is arranged around the mounting position (22), the oil collecting groove (12) is an annular groove-shaped structure arranged between the oil storage funnel (11) and the mounting position (22), the oil storage funnel (11) is in communication with the oil collecting groove (12), and the oil guiding hole (13) is a hole for allowing the oil collecting groove (12) to communicate with a bearing internal end surface (21). The bearing lubrication apparatus can not only fully lubricate and dissipate heat from the bearing, but can also wash away the iron filings spalled off from a bearing inner ring so as to clean said bearing.

Classes IPC  ?

• F16C 33/66 - Pièces ou détails particuliers pour la lubrification
• E01C 19/28 - Rouleaux vibrants ou rouleaux soumis à des percussions, p. ex. à un martèlement

Abrégé

A screed plate comprises a first indicating line connection mechanism (1), a second indicating line connection mechanism (2) and an indicating line and an indicating scale, arranged on two sides of the screed plate along the paving width direction respectively, an indicating line (3) with two ends connected with a connecting portion of the first indicating line connection mechanism (1) and a connecting portion of the second indicating line connection mechanism (2) respectively, and an indicating scale (4), arranged on the screed plate and used for indicating the position of the indicating line (3). A paver provided with the screed plate is further provided. The screed plate and the paver indicate the flatness of the bottom surface in real time, thereby improving the pavement paving quality.

Classes IPC  ?

• E01C 19/48 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement pour déposer les matériaux et les consolider, ou pour finir la surface

Abrégé

An input and output multiplexing port comprises: a state collecting unit (1), configured to collect first state information and second state information of outside of the input and output multiplexing port, the first state information being a state when the multiplexing port serves as an output port, and the first state information comprising an open circuit state, a line-to-ground short circuit state, and a power short circuit state; and a control unit (3), configured to receive the first state information and second state information sent by the state collecting unit (1), and determine, according to the second state information, a state when the multiplexing port serves as an input port, the state when the multiplexing port serves as the input port comprising the open circuit state, the line-to-ground short circuit state, and the power short circuit state. By means of the input and output multiplexing port, the input and output port is multiplexed through a mapping between the state information of the port and physical information of the port, so that the port multiplexing capability of the controller can be improved; and the input and output multiplexing port has advantages of being simple in structure and convenient in implementation

Classes IPC  ?

• G05B 19/04 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique
• H04Q 11/00 - Dispositifs de sélection pour systèmes multiplex
• G06F 13/40 - Structure du bus

Abrégé

Provided are a PWM and AI multiplexing port, a control method therefor and a controller. The PWM and AI multiplexing port comprises a PWM output drive unit (1), a sampling unit (3), a load unit (8) and a switch unit (7). The first end of the sampling unit (3) is connected to the output end of the PWM output drive unit (1), and the second end of the sampling unit (3) is used for connecting with a port load or is used for receiving an AI signal; the first end of the switch unit (7) is connected to the output end of the PWM output drive unit (1), and the second end of the switch unit (7) is connected to the load unit(8); when the switch unit (7) is switched off, the sampling unit (3) is used for acquiring a PWM current value of the port load; and when the switch unit (7) is switched on, the PWM output drive unit (1) is deactivated, and the sampling unit (3) is used for acquiring the AI signal. This solution can improve the flexibility of a port, and multiplex a PWM port so as to achieve the high-accuracy acquisition of AI signals within different ranges, thereby meeting the demand of diverse on-site applications.

Classes IPC  ?

• H03K 19/0175 - Dispositions pour le couplageDispositions pour l'interface

Abrégé

An overvoltage protection circuit and a current sampling device provided with the overvoltage protection circuit. The overvoltage protection circuit comprises: an enable switch, arranged for controlling a sampling resistor switch which is connected to a sampling resistor in series to switch on and off; and a comparer, one end of the comparer being provided with an external interface, and the other end of the comparer being connected to an enable end of the enable switch, and arranged for determining whether the enable end of the enable switch is enabled according to a comparison result. Therefore, the overvoltage protection circuit and the current sampling device can effectively protect the sampling resistor, and not only is short in response time, but also simple in design, and low in cost.

Classes IPC  ?

• H02H 11/00 - Circuits de protection de sécurité pour empêcher la commutation de mise en service dans le cas où une condition électrique de travail indésirable pourrait en résulter
• G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe

Abrégé

An eccentric block assembly and a vibration type pavement roller. The eccentric block assembly comprises a movable eccentric block (1), a fixed eccentric block (2), a rotation shaft (3) and a casing (4). The rotation shaft (3) is fixed with the fixed eccentric block (2) and fitted slideably with the shaft hole of the movable eccentric block (1). The casing (4) is fixed with the rotation shaft (3) and arranged outside the movable eccentric block (1). A plurality of limit structures are arranged on the side of the movable eccentric block (1). The link lines between the limit structures and the axis of the rotation shaft (3) are not in the same line. A limit device is arranged on the inner side wall of the casing (4). The limit device is matched with the limit structures to limit the relative displacement of the movable eccentric block (1) and the casing (4). The vibration type pavement roller comprising the eccentric block assembly can simplify the structure of a shock excitation device.

Classes IPC  ?

• E01C 19/28 - Rouleaux vibrants ou rouleaux soumis à des percussions, p. ex. à un martèlement

Abrégé

Disclosed are a transfer case and engineering machinery. The transfer case comprises: a box body (1), a gear wheel shaft (2) and a bearing (3), wherein internal splines (21) are provided on an inner wall of a shaft hole of the gear wheel shaft (2), and an oil guide hole (11) is provided on the box body (1). The transfer case also comprises: an oil guide groove (12) and an oil receiving part (4), wherein the oil guide groove (12) is provided in the box body (1), an oil inlet end of the oil guide groove (12) is in communication with the oil guide hole (11), and an oil outlet end is in communication with the oil receiving part (4). One end of the oil receiving part (4) is connected with the box body (1) and is in communication with the oil outlet end of the oil guide groove (12) and the other end extends into the shaft hole of the gear wheel shaft (2). The oil receiving part (4) is used to guide lubricating oil from the oil outlet end of the oil guide groove (12) into the shaft hole. Lubricating oil in the transfer case circulates successively in order between the oil guide hole (11), the oil guide groove (12), the oil receiving part (4), the engagement end and the non-engagement end of the internal splines (21) of the shaft hole, the bearing, and the oil guide hole (11), and in the process of circulating, the lubricating oil continuously flows through the engagement end of the internal splines (21), thereby lubricating and cooling the internal splines (21). Hence, the transfer case has good lubricating effects on the splines, thus the service life of the splines is longer and the reliability of the transfer case is greater.

Classes IPC  ?

• F16H 57/04 - Caractéristiques relatives à la lubrification ou au refroidissement
• B60K 17/344 - Agencement ou montage des transmissions sur les véhicules pour entraînement simultané des roues avant et arrière, p. ex. véhicules à quatre roues motrices comportant une boîte de transfert

Abrégé

A road milling machine and a leg swinging mechanism for same. The leg swinging mechanism comprises a dual-rocker mechanism formed of a frame (1), a swing rod (5), a rotatable sleeve rod (2), and a fixed connecting rod (4). The swing rod (5) and the rotatable sleeve rod (2) are rockers. The fixed connecting rod (4) is a connecting rod. A rotatable connection is formed between the fixed connecting rod (4) and the rotatable sleeve rod (2) with a leg (3) of the road milling machine being a hinge axis, and the fixed connecting rod (4) and the leg (3) are fixedly connected, and are parallel to each other before and after the swinging of the dual-rocker mechanism. The structure of the leg swinging mechanism does not change the travel direction of the tires or continuous tracks during the swinging of the leg (3), and with small movement ranges of the two rockers, the leg (3) located at the hinge point has a large displacement range, is compact in structure, and occupies a small space.

Classes IPC  ?

• E01C 23/12 - Dispositifs ou aménagements pour travailler la surface terminéeDispositifs pour réparer la surface des revêtements endommagés pour enlever, arracher ou briser les revêtements

Abrégé

A screed compaction beam comprising a drive shaft (1), a cam (2), a transmission rod (3), and a transmission rod resetting mechanism (5). The drive shaft (1) is connected to a drive motor. The cam (2) is sleeved onto the drive shaft (1) and is coaxially linked with the drive shaft (1). The upper end of the transmission rod (3) is contactedly connected to the outer peripheral wall of the cam (2), while the lower end is fixedly connected to a blade (6). The transmission rod resetting mechanism (5) allows the upper end of the transmission rod (3) to press tightly against the cam (2). Also provided are a screed provided with the screed compaction beam and a paver. The compaction beam is structurally simple and easy to remove.

Classes IPC  ?

• E01C 19/48 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement pour déposer les matériaux et les consolider, ou pour finir la surface

Abrégé

a) to an oil passage B.

Classes IPC  ?

• F15B 15/22 - Autres parties constitutives pour accélérer ou ralentir le mouvement
• F04B 1/00 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres

Abrégé

A beam device comprises at least three sections of beams hinged end to end in turn. When the beam device is in a folded state, a second section of beam (2) is folded on the top of a first section of beam (1), and the beams are distributed on a first longitudinal surface (01), a second longitudinal surface (02) and a third longitudinal surface (03) paralleled with and spaced from each other. The second longitudinal surface (02) is located between the first longitudinal surface (01) and the third longitudinal surface (03). At least two sections of beams extend respectively between the first longitudinal surface (01) and the second longitudinal surface (02), and between the second longitudinal surface (02) and the third longitudinal surface (03). A concrete pump vehicle is provided with said beam device. The beam device can be provided with more beams to expand the beam spread of the beam device without increasing the length and the width of the vehicle. Under identical beam spread, the quantity of the beams can be increased so as to reduce the length of a single section of beam.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A distribution valve of a pumping system comprises a valve body (1). The valve body has a valve cavity (7), and a valve opening a (101), a valve opening b (102) and a valve opening c (103) which communicate with the valve cavity (7) are provided on the value body (1). A valve plug (2) is provided in the valve cavity (7), and under the action of a driving mechanism, the valve plug (2) can alternately close the valve opening a (101) and the valve opening b (102). A pumping system comprises the two distribution valves. By means of two valve plugs, the purpose that two delivery cylinders alternately suck and pump materials is achieved. The pumping system is simple in structure, reliable in the distribution performance, and capable of saving cost and installation space. Two sets of driving mechanisms are utilized to respectively drive the two valve plugs, thereby simplifying a control system and lightening the weight of the whole machine. An engineering machine comprises the pumping system.

Classes IPC  ?

• F04B 53/10 - ClapetsAgencement des clapets

Abrégé

A remote controller (100) comprises: a detection unit (102), detecting an operating area of the remote controller (100) to generate a detection signal; a determining unit (104), connected to the detection unit (102) and determining, according to a detection result from the detection unit (102), whether an object enters the operating area; and a processing unit (106), connected to the determining unit (104), and if a determining result of the determining unit (104) is no, setting the remote controller (100) to a protection state. Correspondingly, a protection method of a remote controller (100) is provided. Whether a user operates the remote controller (100) is determined, and when the determining result is no, the remote controller (100) enters a protection state, so as to protect an electronic element and so on in the remote controller (100), and when an accident such as falling or collision occurs, a false action is avoided, and a damage to the remote controller (100) is reduced, thereby improving the use security of a device.

Classes IPC  ?

• G08C 23/04 - Systèmes de transmission de signaux non électriques, p. ex. systèmes optiques utilisant des ondes lumineuses, p. ex. infrarouges
• G06K 9/00 - Méthodes ou dispositions pour la lecture ou la reconnaissance de caractères imprimés ou écrits ou pour la reconnaissance de formes, p.ex. d'empreintes digitales

Abrégé

A concrete pump truck comprises a chassis (3), a fixed rotating tower (5) and a pumping system (1) arranged on the chassis, and an arm support system (2) disposed on the fixed rotating tower. The pumping system comprises a delivery cylinder (11) and a hopper (12). The chassis comprises a cab (4). The fixed rotating tower is disposed at one end of the chassis close to a rear axle, and the pumping system (1) is disposed in front of the fixed rotating tower. Since the arm support system is positioned nearby the rear axle, and the rear axle has strong bearing capability, an arm support can be directly rotated to a position behind the car in a state that a support leg is not opened, and then the concrete pump truck is directly driven to a construction site for construction. Therefore, the application range of the concrete pump truck is expanded, and the use safety and stability of the concrete pump truck in construction are improved. Besides, when the concrete pump truck is transferred to another construction site, the arm support system does not need to be rotated repeatedly, so that the work efficiency is improved, and the transfer of the concrete pump truck is convenient.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A boom device comprises multiple booms hinge-connected in sequence. A first boom is hinge-connected to a turntable of pumping machinery. The turntable is located in the middle of the pumping machinery. The first boom is placed upside down. A second boom is hinge-connected to the first boom and folded above the first boom. The second boom, the following booms, and the last boom all run through the body of the pumping machinery. The turntable is located in the middle of the pumping machinery, and the first boom is placed upside down and extends towards the tail or the cab of the pumping machinery, so that the second boom, the following booms, and the last boom can run through the body of the whole pumping machinery, that is, run from the cab of the pumping machinery along the length direction of the pumping machinery to the tail thereof, so as to realize arrangement of an ultra-long boom, and further increase the unfolded length of the whole boom device, thereby increasing the material distribution range thereof. A concrete pump truck comprising the boom device.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A mobile concrete mixing station comprises a mixing unit (1) and a batching unit (2). The mixing unit (1) comprises a first support (51), and a main mixing machine (14) and a belt conveyer mechanism (11) disposed on the first support (51). The batching unit (2) comprises a second support (52), and a batching system disposed on the second support (52). The first support (51) and the second support (52) are detachably connected. The first support (51) and/or the second support (52) is provided with an auxiliary driving mechanism for facilitating the movement of the mixing unit (1) and/or the batching unit (2). The mixing station can satisfy road transport conditions during transition, thereby reducing transition cost.

Classes IPC  ?

• B28C 9/04 - Disposition générale ou schéma d'installation l'installation étant mobile

Abrégé

Disclosed is a rotatable boom, comprising more than one boom section (1) with at least one boom section (1) comprising a first stage boom section (11) and a second stage boom section (12). The first stage boom section (11) and the second stage boom section (12) are connected via a slewing mechanism (2), and the second stage boom section (12) is able to rotate under the action of the slewing mechanism (2) around the slewing axis (226) of the slewing mechanism (2) relative to the first stage boom section (11). Furthermore, also provided is a concrete pump truck comprising the rotatable boom. The rotatable boom has an added slewing mechanism (2) between the boom sections (1), making the folding, extending and rotating actions of the boom more flexible, and the boom sections (1) rotate circumferentially together with the supply pipe (3), increasing the distribution operating range of the boom and reducing distribution blind spots.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

Disclosed is a screw blade for a spreader. The screw blade comprises a working surface (1), a blade tip (2) and a blade root (3). A concave-convex structure is provided on the working surface (1) so that some material is stuck on the concave-convex structure during the process of conveying material. Having a concave-convex structure on the spreader screw blade can improve the abrasion resistance of the blade and prolong the service life of the screw blade.

Classes IPC  ?

• E01C 19/12 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement pour répartir les matériaux granuleux ou liquides
• B65G 33/26 - Vis

Abrégé

Disclosed is an apparatus for detecting drill rod deformation, comprising a detecting component, a control component and a display, wherein the detecting component is used for detecting in real time a parameter able to reflect the degree of deformation of a drill rod, and transmitting a signal of the parameter detected to the control component; the control component is used for receiving the parameter signal, obtaining a parameter value matched to the current degree of deformation of the drill rod according to a preset strategy, and transmitting the parameter value matched to the current degree of deformation of the drill rod to the display; and the display outputs the parameter value matched to the current degree of deformation of the drill rod. The apparatus prevents excessive deformation and cracking of the drill rod. Further disclosed is a drill carriage comprising the apparatus for detecting drill rod deformation.

Classes IPC  ?

• G01B 21/32 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative pour mesurer la déformation dans un solide

Abrégé

A multiturn rotary encoder. The centre of the end surface of a rotating shaft (1) thereof is provided with a first magnet (2), and a second magnet (3) is arranged at the outer side of the first magnet (2). The multiturn rotary encoder also comprises a first sensing element (4) and a second sensing element (5) with fixed positions. The first sensing element (4) is arranged in the magnetic field range of the first magnet (2), and the second sensing element (5) is alternately in the magnetic field range of the second magnet (3) or outside the magnetic field range of the second magnet within the time for the rotating shaft (1) to rotate for once. The multiturn rotary encoder also comprises a controller (0) which is connected to the first sensing element (4) and the second sensing element (5). The controller (0) is configured for analysing and processing output signals of the first sensing element (4) and the second sensing element (5) and obtaining a detection result. The multiturn rotary encoder can achieve the measurement of the rotating shaft at multiturn rotation angles, and has the characteristics of a simple structure, exact measurement and reliable operation.

Classes IPC  ?

• G01D 5/244 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques influençant les caractéristiques d'impulsionsMoyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions
• G01D 5/347 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens optiques, c.-à-d. utilisant de la lumière infrarouge, visible ou ultraviolette avec atténuation ou obturation complète ou partielle des rayons lumineux les rayons lumineux étant détectés par des cellules photo-électriques en utilisant le déplacement d'échelles de codage

Abrégé

Disclosed are a collapsible boom control method, controller and control system, and concrete spreading machinery. The collapsible boom control method comprises the following steps: acquiring the current travel L2 of a predetermined boom oil cylinder of the collapsible boom, and acquiring the maximum distance r2 from each boom section end to a root articulation point of a predetermined boom section between the root articulation point of the predetermined boom section driven by the predetermined boom oil cylinder and the end of the boom (S11); according to the current travel L2 and the maximum distance r2, calculating the required flow rate Q2 for the predetermined boom oil cylinder when the boom section end with the maximum distance r2 is made to move at a predetermined speed ν0 under the drive of the predetermined boom oil cylinder (S12); and supplying hydraulic oil to the predetermined boom oil cylinder at a flow rate less than or equal to the flow rate Q2 (S13). The control method can improve the safety of the collapsible boom when extending or retracting.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• G05B 19/04 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique

Abrégé

A power gear-shifting transmission and an engineering machinery. The power gear-shifting transmission comprises a clutch shaft assembly (1). The clutch shaft assembly (1) comprises a clutch shaft (11), a housing gear (12) arranged on the clutch shaft (11), a clutch disc (13) arranged within the housing gear (12), and a gear-shifting piston (14) arranged at one end of the clutch disc (13). The gear-shifting piston (14) is pushed by a clean hydraulic medium introduced via a fluid supply passage (3); the clean hydraulic medium is supplied by a hydraulic system (2). The engineering machinery comprises the power gear-shifting transmission. Because the power gear-shifting transmission and the engineering machinery employ the hydraulic system (2) to supply the clean hydraulic medium at a stable pressure to the gear-shifting piston (14), the shortcomings in the prior art of unclean gear-shifting oil, unstable pressure, bubble content, and air-absorbing tendency are solved, while the advantages of stable gear-shifting and extended service life are provided.

Classes IPC  ?

• F16H 61/30 - Moteurs hydrauliques à cet effet
• F16D 25/00 - Embrayages actionnés par fluide

Abrégé

A concrete piston structure, a pumping system comprising the concrete piston structure, and a concrete pump. The concrete piston structure is arranged in a transport cylinder of the pumping system, comprising a piston connecting rod (1) and a piston body (2) connected thereto. A flexible sealing component (4) is arranged in the circumferential direction on the exterior of the piston body (2). A first sealing component is also arranged in the circumferential direction on the exterior of the piston body (2). The first sealing component is arranged at one side of the flexible sealing component (4) in proximity to a transportation medium. The first sealing component comprises a filter ring (31) arranged in the circumferential direction on the exterior of the piston body (2) and matches the inner wall of the transport cylinder. The concrete pump comprises a hopper and is provided with two transport cylinders, where the two transport cylinders are alternately in communication with the hopper. Under the premise of ensured sealing effect, the concrete piston structure improves the service life of the sealing structure.

Classes IPC  ?

• F04B 53/14 - Pistons, tiges de piston ou liaisons piston-tige
• F04B 53/02 - Garnissage de l'espace libre entre des cylindres et des pistons
• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes
• F16J 9/10 - Organes particuliers pour ajuster les segments
• F16J 9/16 - Obturation des fentes de segments par empilement des segments
• F16J 1/08 - Caractéristiques de structure pour assurer la lubrification

Abrégé

A hydraulic pumping system for concrete pumping equipment, and concrete pumping equipment comprising the same, comprising a first main oil cylinder (1), a second main oil cylinder (2), a main oil pump (10) alternately supplying oil for the first main oil cylinder (1) and the second main oil cylinder (2); further comprising a pressure-stabilizing device (12) supplying high-pressure hydraulic oil for the first main oil cylinder (1) or the second main oil cylinder (2) to quickly compact the concrete when the hydraulic pumping system changes direction, the oil outlet of the pressure-stabilizing device (12) communicating with the oil-supplying channel of the main oil pump (10). The hydraulic pumping system can quickly compact the concrete in a conveying cylinder, thus avoiding the generation of concrete impact at the stage of concrete compaction, and improving the operating stability of the pumping system. The concrete pumping equipment comprising the hydraulic pumping system has the same effect.

Classes IPC  ?

• F15B 1/02 - Installations ou systèmes comprenant des accumulateurs
• F15B 11/20 - Systèmes de servomoteurs dépourvus d'asservissement avec plusieurs servomoteurs commandant plusieurs organes réagissant les uns sur les autres ou fonctionnant successivement

Abrégé

A method and device for controlling the travelling direction of engineering mechanical equipment, the method comprising: detecting the positive direction of a turntable of the engineering mechanical equipment (S401); the universal operating device of the equipment outputs an action vector according to a corresponding operation and the positive direction of the turntable (S402); and determining the travel speed component and steering speed component of the equipment according to the action vector (S403). By corresponding the action direction of the universal operating device to the actual travelling direction of crawler type or wheel type engineering mechanical equipment, the present invention solves the problem that the travelling operation is opposite to the travelling direction of the equipment relative to a driver when the turn angle is relatively large, such that the driver can operate more intuitively, thus reducing labor intensity and avoiding possible danger caused by improper operation.

Classes IPC  ?

• E02F 9/20 - EntraînementsDispositifs de commande
• E02F 3/16 - Dispositifs de sécurité ou de commande

Abrégé

A pump truck stability control system comprising a detection apparatus and a control apparatus. The detection apparatus is for use in detecting, of a pump truck, a current pumping state parameter, a boom posture parameter, a supporting leg posture parameter, a pump truck machine body position state parameter, and a current-value signal of an external load parameter acting on a boom system. The control apparatus is for use in receiving current-value signals of the parameters, in calculating the position of the overall center of gravity of the concrete pump truck on the basis of the parameters, and in performing stability control for the pump truck on the basis of the position of the overall center of gravity within a pump truck stable area. The stability control system takes into full consideration internal factors of the pump truck itself and external load factors, thus improving the precision in calculating the center of gravity, and improving construction safety of the concrete pump truck. In addition, also comprised are a pump truck stability control method and the pump truck comprising the stability control system.

Classes IPC  ?

• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés
• F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif

Abrégé

A boom system comprising multiple boom sections hingedly connected in sequence via a horizontal hinge shaft, also comprising: two length sensors (102 and 104) arranged on each of the boom sections, where one sensor (102) measures the length of the corresponding boom section after a shape-change, while the other length sensor (104) measures the length between same and the distal end of the corresponding boom section, and where the two length sensors (102 and 104) are provided therebetween with a predetermined distance; a tilt angle sensor (106) arranged on each of the boom sections, for acquiring the angle between a reference plane and a line running between the two length sensors (102 and 104); and a processor (200) that acquires an distal end position parameter of the boom system on the basis of the measurement results of the tilt angle sensor (106) and of the length sensors (102 and 104). On the basis of the boom system, the distal end position parameter of the boom is acquired by using for a single boom one tilt angle sensor and two pull encoders, thus increasing the precision in acquiring the distal end position parameter of the boom system. Also provided are an engineering machinery and a method for acquiring the distal end position parameter of the boom system.

Classes IPC  ?

• G01B 21/00 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative
• B66C 23/00 - Installations comportant essentiellement un palonnier, une flèche ou une structure triangulaire agissant comme bras de levier, montées de façon à permettre des mouvements de translation ou d'orientation dans des plans verticaux ou horizontaux, ou bien une combinaison de ces mouvements, p. ex. grues à flèche, derricks ou grues sur tours
• G05D 1/00 - Commande de la position, du cap, de l'altitude ou de l'attitude des véhicules terrestres, aquatiques, aériens ou spatiaux, p. ex. utilisant des pilotes automatiques
• G05D 3/00 - Commande de la position ou de la direction
• B66F 11/00 - Dispositifs de levage spécialement adaptés à des buts particuliers, non prévus ailleurs
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

a) of the piston rod. The rodless cavity sealing end face (1-2) is provided in an oil cylinder cavity between a rodless cavity oil passing hole (1-1) and the termination of the rodless cavity end face of the piston for the retraction process of the piston rod (3), and enables to block the buffer sleeve (4) and attach to the first end surface (4-1) of the buffer sleeve thereby forming a sealing surface.

Classes IPC  ?

• F15B 15/20 - Autres parties constitutives
• F15B 15/22 - Autres parties constitutives pour accélérer ou ralentir le mouvement

Abrégé

A control method of an engineering machine comprising n sections of beams sequentially hinged through hinged shafts. The control method comprises the following steps: firstly, detecting the angle parameter of each beam in the current state or the state parameter of an oil beam cylinder for driving the beam to move at the current moment; secondly, sending a control instruction according to the angle parameter in the current state or the state parameter of the oil beam cylinder at the current moment and a preset control strategy; finally, controlling hydraulic oil flow of the oil beam cylinder according to the control instruction, so as to rotate uniformly each beam around the corresponding hinged shaft. The controlling method can adjust in real time the hydraulic oil flow of the oil cylinder for driving the beam to move, realize uniform rotation of the beams, has relatively high control precision, is easy to implement, and has a reduced cost. An engineering machine and a control system thereof are also disclosed.

Classes IPC  ?

• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés
• G05D 3/12 - Commande de la position ou de la direction utilisant la contre-réaction

Abrégé

A support system of an engineering machinery and the engineering machinery having the support system. The support system comprises a first support leg (21), a second support leg (22), a third support leg (23), and a fourth support leg (24) arranged on the engineering machinery, and additional support legs (25 and 26) arranged between the third support leg (23) and the fourth support leg (24). The minimum distance running from support points of the third support leg (23) and of the fourth support leg (24) to the circumference of a circle around the center of gravity of the engineering machinery is less than the minimal distance running from the support points of two adjacent support legs among the third support leg (23), the fourth leg (24), and the additional support legs (25 and 26) to the circumference of the circle around the center of gravity of the engineering machinery. The arrangement of the additional support legs (25 and 26) increases the anti-rollover capability and support capability of the entire vehicle, while at the same time, when the lengths of the support legs are reduced, obviates the need to occupy a great area of a site, and maintains a degree of stability identical to existing support systems, thus allowing the engineering machinery having the support system to be applicable in limited spaces, and satisfying construction needs on sites that are narrow and small.

Classes IPC  ?

• B66C 5/00 - Structures à pylônes supportant l'assise
• B66C 23/78 - Appuis, p. ex. des longerons, pour grues mobiles
• B60S 9/10 - Dispositifs sur les véhicules, venant en contact avec le sol, pour supporter, soulever ou manœuvrer le véhicule, entièrement ou en partie, p. ex. crics incorporés pour uniquement soulever ou supporter par pression d'un fluide
• E04G 25/00 - Étais ou entretoisesCales
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

a.

Classes IPC  ?

• G05B 15/00 - Systèmes commandés par un calculateur
• G05B 19/00 - Systèmes de commande à programme
• B25J 9/16 - Commandes à programme

Abrégé

Disclosed are a mechanical arm control system and method, and engineering machinery. The mechanical arm control system comprises an acquisition device, a controller and a driving device. The acquisition device is used for acquiring a position relation signal of a first coordinate system of a manipulating element of a remote controller and a second coordinate system of a tail end of a mechanical arm, and an action direction signal of the manipulating element. The controller is used for receiving the position relation signal and the action direction signal, and sending a direction control instruction for controlling the tail end of the mechanical arm to act. The driving device is used for receiving the direction control instruction and controlling arm joints to move, so as to drive the tail end of the mechanical arm and a control element of the remote controller to move in the same direction. Therefore, an operator can achieve more intuitive and vivid control of the mechanical arm, and it is convenient for the operator to judge the control direction, thereby improving the control efficiency of the mechanical arm.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

Disclosed are a method and a system for operation and control of a mechanical arm and engineering machinery having this system. In the system for operation and control of a mechanical arm, an acquisition apparatus is used for acquiring a positional relationship signal of an operational component in a first coordinate system and an end of the mechanical arm in a second coordinate system, a motion direction signal of the operational component, and an inclined angle parameter signal of a construction reference surface; and a controller issues control commands according to the signals so that a drive apparatus controls the end of the mechanical arm to move parallel to the working reference plane. The control system can achieve three-dimensional movement of the mechanical arm by simple operation and can not only improve the control efficiency of the mechanical arm but the control is also relatively visual and graphic, aiding the judgement of the operator with regard to control direction.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A rocker structure and a bobbing mechanism of a pumping system, a pumping system, and an engineering machine. The rocker structure (13) comprises a first swinging part (131) and a second swinging part (132) arranged along a rotating axis direction of a rotating part (133). A left swinging valve oil cylinder (11) and a right swinging valve oil cylinder (12) are respectively connected to the first swinging part (131) and the second swinging part (132), so that the left and right swinging valve oil cylinders (11, 12) can be arranged in two different vertical planes, thus flexibly arranging the components of the bobbing mechanism. Therefore, the kinetic moment of the bobbing mechanism during the swinging process is reasonably distributed; the moment value of the rocker structure (13) gradually decreases from the starting to the termination, thereby preventing the bobbing mechanism from becoming incapable of swinging and reducing the reversing impact force; the impact on a distribution valve and the like is reduced; the vibration of the bobbing mechanism, the distribution valve, and the pumping system is alleviated; the wearing of the parts is reduced and the service life of the parts is prolonged.

Classes IPC  ?

• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes
• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés

Abrégé

Disclosed is a quality monitoring system for a concrete mixing station, comprising an acquisition unit (2) connected to a material weighing sensor (11) of the concrete mixing station and used for acquiring an actual material value, and a downloading unit (3) connected to a database (12) in a control system of the concrete mixing station and used for downloading a standard material value. The quality monitoring system further comprises a computing unit (4), the computing unit (4) being connected to the acquisition unit (2) and the downloading unit (3) respectively, so as to send an alarm signal when the absolute value of the difference between the actual material value and the standard material value is greater than or equal to a predetermined value. By means of the structural design of the quality monitoring system, human factors can be reduced during monitoring, thus ensuring the accuracy and reliability of the quality monitoring for concrete. Also provided is a concrete mixing station comprising the quality monitoring system.

Classes IPC  ?

• G01G 19/22 - Appareils ou méthodes de pesée adaptés à des fins particulières non prévues dans les groupes pour le dosage de produits par pesée avant de les mélanger
• G01G 13/00 - Appareils de pesée avec remplissage ou vidange automatiques pour peser des quantités données d'un produit
• B28C 9/00 - Disposition générale ou schéma d'installation
• B28C 7/00 - Commande de l'opération de production des mélanges d'argile ou de ciment avec d'autres substancesAlimentation ou dosage des ingrédients pour les mélanges ci-dessusDéchargement du mélange

Abrégé

A system (100) for determining a working posture of an excavator comprises a data acquisition device (102), a speed acquisition device (104), a data storage device (106), a threshold setting device (108), and an excavation predicting device (110). Also disclosed are an excavator (200) having the system (100) for determining a working posture of the excavator and a method for determining a working posture of the excavator.

Classes IPC  ?

• E02F 9/20 - EntraînementsDispositifs de commande
• E02F 3/43 - Commande de la position du plongeur ou de l'augeCommande de la succession des opérations d'entraînement

Abrégé

Disclosed is a pumping mechanism of material pumping equipment, wherein a rod chamber (21) and a non-rod chamber (22) of a transfer cylinder thereof are in communication with a suction pipe (4) of the pumping mechanism respectively via a first valve (41) and a second valve (42), and the rod chamber (21) and the non-rod chamber (22) are in communication with a discharge pipe (5) of the pumping mechanism respectively via a third valve (51) and a fourth valve (52). When a piston (31) of the transfer cylinder moves to the end of the non-rod chamber (22), the second valve (42) and the third valve (51) are closed and the first valve (41) and the fourth valve (52) are opened. When the piston (31) of the transfer cylinder moves to the end of the rod chamber (21), the second valve (42) and the third valve (51) are opened and the first valve (41) and the fourth valve (52) are closed. The pumping mechanism can improve the continuity of the spraying operation. Also disclosed is material pumping equipment comprising the pumping mechanism mentioned above.

Classes IPC  ?

• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes
• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés

Abrégé

A system (100) for improving dynamic response characteristics of an excavator comprises a control device (102), used for determining whether an excavator (200) tends to excavate or not, and if yes, sending an acceleration command; and a communications device (104), used for transmitting the acceleration command from the control device (102) to an engine ECU so that a rotation speed of the engine is adjusted to a preset rotation speed. Also disclosed are the excavator (200) having the system (100) for improving dynamic response characteristics of the excavator, and a method for improving dynamic response characteristic of the excavator.

Classes IPC  ?

• E02F 9/20 - EntraînementsDispositifs de commande
• E02F 3/43 - Commande de la position du plongeur ou de l'augeCommande de la succession des opérations d'entraînement

Abrégé

A two level conveyor folding system for milling machine comprises a folding execution system and a folding hydraulic control system. The folding execution system comprises a fixed arm (1) and a foldable arm (7) hinged with the lower part of the front end of the fixed arm (1), and a connection plate (4), a pull rod (5) and a driving oil cylinder (3) arranged on either side and symmetrically to the center line of the fixed arm (1) and the foldable arm (7). The lower end of the connection plate (4) is hinged to the lower part of the fixed arm (1), and the upper end of the connection plate (4) is hinged to the upper end of the pull rod (5). The lower end of the pull rod (5) is hinged to the upper part of the foldable arm (7). The front and rear ends of the driving oil cylinder (3) are hinged to the middle and upper part of the connection plate (4) and the upper part of the fixed arm (1) respectively. The folding hydraulic control system drives two oil cylinders to lock each other by a hydraulic lock (13) and a flow distributing and collecting valve (14) and controls them to operate synchronously. A milling machine provided with the folding system is disclosed. The folding system and the milling machine have better reliability and prevent the transfer machine from inclining laterally.

Classes IPC  ?

• E01C 23/088 - Outils rotatifs, p. ex. tambours de fraisage
• B65G 21/10 - Châssis ou carters de support ou de protection pour transporteurs sans fin ou éléments de traction des transporteurs à courroies ou à chaînes mobiles ou à pièces interchangeables ou relativement mobilesDispositifs pour déplacer le châssis ou des parties de celui-ci

Abrégé

Provided is a flow distributing system for a multi-sectional boom, comprising: an operating apparatus (102) for responding to the boom operating actions of a user and generating corresponding operation commands; a control apparatus (104) connected to the operating apparatus (102), generating corresponding control signals according to the operation commands from the operating apparatus (102) and performing reduction processing on the control signals. Accordingly, further disclosed are engineering machinery equipment and a flow distributing apparatus and method for a multi-sectional boom. By means of this technical solution, flow can be distributed rationally when operating a multi-sectional boom, ensuring that the movement of each section of the boom works in a coordinated manner. DD

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• B66C 13/20 - Systèmes ou dispositifs de commande pour entraînement non électrique

Abrégé

A material sealing door and a concrete mixer with the material sealing door. The material sealing door is mounted at an opening of a rotary mixing barrel (1) in an openable and closable manner, and comprises a material sealing door body (11) and at least one adjustment device (2). The adjustment device (2) comprises a fixed component and a movable component mounted on the fixed component. A position of the movable component relative to the fixed component can be adjusted, and the movable component can be fixed at an adjusted position. The movable component can bears pressure between an opening frame (101) of the rotary mixing barrel (1) and the material sealing door when the material sealing door is closed. The adjustment device (2) of the material sealing door controls a pressure between the material sealing door body (11) or a sealing ring (3) and the opening frame (101) of the rotary mixing barrel (1) to be within a stable range, thereby reducing a frictional force between the material sealing door body (11) or the sealing ring (3) and the opening frame (101) of the rotary mixing barrel (1), and reducing abrasion of the material sealing door body (11) or the sealing ring (3) while ensuring sealing effects of the material sealing door.

Classes IPC  ?

• B28C 5/42 - Appareillage spécialement adapté pour être monté sur des véhicules avec possibilité de mélanger au cours du transport
• B60P 3/16 - Véhicules adaptés pour transporter, porter ou comporter des charges ou des objets spéciaux pour porter du mélange de béton, p. ex. avec tambour tournant
• F16B 1/02 - Moyens pour bloquer des éléments de mécanismes après fonctionnement

Abrégé

A fixed turret used for a concrete pump truck. The concrete pump truck comprises a rotation mechanism and support legs. The fixed turret comprises a turret platform (1) matched with the rotation mechanism and a plurality of support leg mounting bases for mounting the support legs. The turret platform (1) is independent of the support leg mounting bases and the support leg mounting bases are independent of one another. The turret platform (1) is connected to the support leg mounting bases through first positioning rods (21). Due to the structure design of the fixed turret, on the one hand, the processing and assembling process can be simplified and the weight is reduced, and on the other hand, a larger available space is obtained, thereby facilitating general arrangement of the pump truck. Moreover, a concrete pump truck comprising the fixed turret is also disclosed.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• B66C 23/16 - Installations comportant essentiellement un palonnier, une flèche ou une structure triangulaire agissant comme bras de levier, montées de façon à permettre des mouvements de translation ou d'orientation dans des plans verticaux ou horizontaux, ou bien une combinaison de ces mouvements, p. ex. grues à flèche, derricks ou grues sur tours avec flèches supportées par des colonnes, p. ex. des pylônes, dont le montage de leur extrémité inférieure permet un mouvement d'orientation

Abrégé

A stabilizer structure and an engineering machinery comprising the same, comprising a horizontal stabilizer; the horizontal stabilizer comprises at least two sequentially hinged sub-stabilizers; any two adjacent sub-stabilizers are provided with a first drive part (2) therebetween for driving the adjacent sub-stabilizers to unfold and fold; of the sub-stabilizers, a first sub-stabilizer (31) is hinged with the engineering machinery body; the first sub-stabilizer (31) and the engineering machinery body are provided with a second drive part (4) therebetween for driving the first sub-stabilizer (31) to unfold and fold; and at least one of the sub-stabilizers is capable of extending and retracting. The stabilizer structure, on one hand, simplifies the structure thereof, thus reducing manufacturing cost; and on the other hand, can smoothly unfold and fold each sub-stabilizer, thus improving operation reliability.

Classes IPC  ?

• B60S 9/02 - Dispositifs sur les véhicules, venant en contact avec le sol, pour supporter, soulever ou manœuvrer le véhicule, entièrement ou en partie, p. ex. crics incorporés pour uniquement soulever ou supporter

Abrégé

Disclosed is a truck-mounted concrete pump, comprising a chassis (20) and an upper structure mounted on the chassis (20), wherein one of the chassis (20) and upper structure is provided with a first track, and the other moves along the first track such that the upper structure translates with respect to the chassis (20). With the relative movement between the upper structure and the chassis (20), the centre of gravity of the pump is changed such that the supporting surface area and the space occupied by supporting legs are reduced.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

Disclosed is a truck-mounted concrete pump, comprising a chassis (20) and an upper structure mounted on the chassis (20), wherein one of the chassis (20) and upper structure is provided with a first track, and the other moves along the first track such that the upper structure translates with respect to the chassis (20). With the relative movement between the upper structure and the chassis (20), the centre of gravity of the pump is changed such that the supporting surface area and the space occupied by supporting legs are reduced.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

Disclosed is a truck-mounted concrete pump, comprising a chassis (20) and an upper structure, wherein the upper structure comprises an arm support system, and middle components provided between the chassis (20) and the arm support system. The chassis (20) and the middle components are rotationally connected, and the centre of gravity of the chassis (20) and/or the middle components is offset from the centrelines of rotation of the chassis (20) and the middle components. The truck-mounted concrete pump requires no additional weights, and adjusts the centre of gravity of the truck-mounted concrete pump by taking the chassis (20) and the middle components as the weights, thereby reducing the supporting surface area and the space occupied by supporting legs, and increasing the stability of the pump.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

Disclosed is a swing mechanism of a pumping system, which mechanism comprises a rocker arm (1) and a box (2) having a cavity. The rocker arm (1) comprises a swinging part (11) alternately driven by a left hydraulic oil circuit and a right hydraulic oil circuit, and a rotary part (12) fixedly connected to the swinging part (11) and provided on a hopper. The rocker arm (1) is located within the cavity and divides the cavity into a separate left cavity (21) and right cavity (22). The left and the right sides of the swinging part (11) are in communication with the left hydraulic oil circuit and the right hydraulic oil circuit via the left cavity (21) and the right cavity (22) respectively, and the rotary part (12) is connected to the box (2) by way of circumferential rotation. The swinging part (11) of the rocker arm (1) is directly driven by hydraulic oil, and the hydraulic energy is all converted into motive mechanical energy of the swinging part (11), so as to be able to reduce the power of a power source driving the movement of the rocker arm (1), thus saving energy, with a simple structure and occupying little space. In addition, also disclosed are a pumping system and concrete equipment comprising the swing mechanism.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes

Abrégé

Disclosed is a pumping system for a piston-type mortar pump. The pumping system comprises a delivery cylinder (3) with a delivery piston (31) and a piston rod arranged therein, wherein the piston rod is connected to a power apparatus of the pumping system, and a rodless chamber (33) of the delivery cylinder (3) is in communication with a material inlet (102) via a unidirectional intake valve (41). The pumping system also comprises a compensation cylinder (5) with a compensation piston (51) arranged therein, wherein the compensation piston (51) separates the compensation cylinder (5) into an out-feed chamber (52) and a buffer chamber (53), the out-feed chamber (52) is in communication with the material outlet (101), the rodless chamber (33) of the delivery cylinder (3) is in communication with the out-feed chamber (52) via a unidirectional out-feed valve (42), and the buffer chamber (53) is in communication with a rod chamber (32) of the delivery cylinder (3) to form a sealed chamber. In this way, when the delivery cylinder (3) is in a material intake stroke, matter stored in the compensation cylinder (5) is discharged via the material outlet (101), thus while taking in material, the pumping system can discharge material, thereby improving the pumping continuity of the pumping system and ensuring continuous operation of the piston-type mortar pump.

Classes IPC  ?

• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes
• F04B 9/103 - "Machines" ou pompes à piston caractérisées par les moyens entraînants ou entraînés liés à leurs organes de travail les moyens étant à fluide le fluide étant liquide avec une seule chambre de pompage

Abrégé

Disclosed is a front wheel mechanism for a tire road roller, which mechanism comprises a swinging rack (1) connected to a frame (4) and a front wheel axle (9) connected to the swinging rack (1), the front wheel axle (9) being provided with a tire, and the front wheel axle (9) also being provided with a brake drum (7) and a brake (6). With the front wheel axle (9) being provided with the brake drum (7) and the corresponding brake (6) thereof, the front wheel mechanism enables the front wheel of the tire road roller to have a brake function too. Also disclosed is a tire road roller having the front wheel mechanism, and by cooperating with a rear wheel brake system, all-wheel braking of the tire road roller can be achieved, so as to supply enough high braking torque when necessary, thus improving the safety performance of the tire road roller.

Classes IPC  ?

• E01C 19/26 - Rouleaux à cet effetRouleaux semblables pouvant également être employés pour compacter le sol automoteurs ou montés sur des véhicules routiers
• E01C 19/23 - Rouleaux à cet effetRouleaux semblables pouvant également être employés pour compacter le sol
• B60T 1/06 - Aménagements des éléments de freinage, c.-à-d. des parties de ceux-ci dans lesquelles se produit l'effet de freinage en agissant par retardement des roues par action autre que sur la bande de roulement, p. ex. par action sur une jante, un tambour, un disque ou sur la transmission

Abrégé

A lubrication system of concrete machinery and concrete machinery. The lubrication system has a bearing (27) and a rotary shaft (28) fitted with each other and both contacting concrete. The bearing (27) has a seal component (21) at two ends. The seal component (21), the bearing (27) and the rotary shaft (28) form a seal cavity. The seal cavity is divided by a partitioning seal component (22) between the bearing (27) and the rotary shaft (28) into a bearing cavity (24) and a protection cavity (23) located at an end portion of the bearing (27). The protection cavity (23) is in communication with a high-pressure medium pipeline through a high-pressure medium passage (26) on the bearing (27); the bearing cavity (24) is in communication with a lubricating oil pipeline through a lubricating oil passage (25) on the bearing (27). The pressure of the medium in the protection cavity (23) is higher than the pressure of the external concrete. The lubrication system prevents the concrete from entering the seal cavity, reduces the abrasion of the concrete on the bearing (27), reduces the lubricating oil usage and the impact of the lubricating oil on the strength of the concrete. Also provided is concrete machinery equipped with the lubrication system.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F16N 7/30 - Installations à huile ou autre lubrifiant non spécifié, à réservoir ou autre source portés par la machine ou l'organe machine à lubrifier l'huile étant entraînée par un autre fluide

Abrégé

A lubrication system of concrete machinery and concrete machinery. The lubrication system has a bearing (22) and a rotary shaft (21) fitted with each other and both contacting concrete. A seal component (23) at two ends of the bearing (22), the bearing (22) and the rotary shaft (21) form a seal cavity (24). The seal cavity (24) is in communication with a high-pressure medium passage (50) and a lubricating oil pipeline (60). The high-pressure medium and the lubricating oil are mixed and then enter the seal cavity (24). The pressure of the medium in the high-pressure medium pipeline (50) is higher than the pressure of the concrete out of the seal cavity (24). The pressure of the lubricating oil in the lubricating oil passage (60) is not lower than the pressure of the medium in the high-pressure medium pipeline (50). The lubrication system prevents the concrete from entering the seal cavity (24), reduces the abrasion of the concrete on the bearing (22) and the rotary shaft (21), reduces the lubricating oil usage and the impact of the lubricating oil on the strength of the concrete. Also provided is concrete machinery equipped with the lubrication system.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F16N 7/30 - Installations à huile ou autre lubrifiant non spécifié, à réservoir ou autre source portés par la machine ou l'organe machine à lubrifier l'huile étant entraînée par un autre fluide

Abrégé

A leveling sensing device and a leveling control system including same. The leveling sensing device includes a signal collection device, a signal processor (11) and an external interface (12). The signal collection device includes a sensor (71). The signal collection device transfers a collected signal to the signal processor (11). The signal processed by the signal processor (11) is transferred via the external interface (12). The sensor (71) includes a coaxial stator (72) and rotor (73). The sensor (71) collects signals through the relative rotation of the stator (72) and rotor (73). The signal collection device transfers the collected ground information to the signal processor (11). The signal processor (11) calculates the specific situation of the ground and transfers same to an external controller, and the controller finally realizes the leveling of the ground. The sensor (71) acquires signals without the transfer of a belt structure or other means, which has relatively high accuracy and reliability.

Classes IPC  ?

• E01C 23/01 - Dispositifs ou moyens auxiliaires préalables à la mise en place d'un nouveau revêtement ou pour en vérifier la configuration, p. ex. gabarits, supports de guide d'arasementApplications des appareils de mesure, d'indication d'enregistrement de la configuration de surface d'un revêtement existant, p. ex. profilographes
• G01D 5/12 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques

Abrégé

A wheeled material distribution machinery, comprising a main drive system (100), an arm support system (200), a pumping system (320) and a material distribution chassis (400); the arm at the base of the arm support system (200) is connected to the material distribution chassis (400); the main drive system (100) is installed on a pre-fixed arm rod of the arm support system (200); in a travelling state, the main drive system (100) is supported on a road surface, and at least part of the weight of the arm support system (200) and the material distribution chassis (400) act on the main drive system (100); in a preset working state, the material distribution chassis (400) is supported on a working face, and the whole weight of both the arm support system (200) and the main drive system (100) act on the material distribution chassis (400) from above. The wheeled material distribution machinery reduces the footprint thereof in the working state, increases utilization efficiency of the components, and improves adaptability thereof.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A wheeled material distribution machinery, comprising a main drive system (100), an arm support system (200), stabilizer mechanisms (600) and a material distribution chassis (400); the inner end of the arm (210) at the base of the arm support system (200) is connected to the material distribution chassis (400); the inner ends of the stabilizer mechanisms (600) are connected to the material distribution chassis (400); the main drive system (100) is installed on the suspension arm of at least one stabilizer mechanism (600); the stabilizer mechanisms (600) are driven stabilizer mechanisms (601); in a travelling state, the driven stabilizer mechanisms (601) are supported on a road surface via the main drive system (100); and at least part of the weight of the folded arm support system (200) acts on at least one driven stabilizer mechanism (601). The wheeled material distribution machinery provides a reduced footprint in a preset working state, and improved adaptability.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A distribution valve and a high-pressure pump comprising the distribution valve. The distribution valve comprises an upper valve body (2) provided with an upper cavity (21), a lower valve body (3) provided with a lower cavity (31), and a middle partition board (4). The upper cavity (21) is in communication with a medium inlet (22), and the lower cavity (31) is in communication with a medium outlet (32). When a valve core (5) rotates clockwise or anticlockwise, one group of a group of a first cavity body (211) and the medium inlet (22) and a group of a third cavity body (311) and the medium outlet (32) is communicated, and the other group is not communicated; and one group of a group of a second cavity body (212) and the medium inlet (22) and a group of a fourth cavity body (312) and the medium outlet (32) is communicated, and the other group is not communicated. The structural design of the distribution valve can achieve continuous pumping of a fluid medium such as water, under the driving of an external power, and the reversing time is short, thereby avoiding cutoff.

Classes IPC  ?

• F04B 53/10 - ClapetsAgencement des clapets

Abrégé

Disclosed is a multi-stage and single-action hydraulic cylinder and engineering machinery having same. The multi-stage and single-action hydraulic cylinder according to the present invention comprises: a first piston sheathed within a first piston chamber and able to slide along the first piston chamber; a first piston rod connected to the first piston and protruding out of the first piston chamber; a second piston chamber formed in the middle between the first piston and the first piston rod; a second piston sheathed within a second piston chamber and able to slide along the second piston chamber; a second piston rod connected to the second piston and protruding out of the second piston chamber; and a snap-ring provided on the first piston and designed to cover over the second piston chamber, and a first throttle hole is provided on the snap-ring and is in communication with a non-rod chamber of the first piston chamber and a non-rod chamber of the second piston chamber. The engineering machinery according to the present invention is provided with the abovementioned multi-stage and single-action hydraulic cylinder. By employing the technical solution of the present invention, the piston rod speed of each of the stages can be kept constant by active throttling and the impact of a larger load can be withstood.

Classes IPC  ?

• F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
• F15B 15/16 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autreTransmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit du type télescopique

Abrégé

An action mapping control system comprises: a handle (11) with a plurality of degrees of freedom of motion, a plurality of sensors and a controller. The plurality of sensors is located on the handle (11) and corresponds to the plurality of degrees of freedom of motion of the handle (11) one by one. Each sensor is used for sensing motion information of the corresponding degree of freedom of the handle (11), and sending the motion information to the controller. The controller controls an operation device to move on the corresponding degree of freedom according to the motion information of the corresponding degree of freedom of the handle (11). Also disclosed is a land leveller having the action mapping control system. By means of the action mapping control system, the actions of the operation device are consistent with operation actions of the handle (11), so the operation difficulty is reduced, and the convenience is improved.

Classes IPC  ?

• E02F 3/85 - Utilisation de systèmes hydrauliques ou pneumatiques
• E02F 3/76 - Niveleuses, bulldozers ou machines analogues avec lame racleuse ou éléments en soc de charrue ou éléments analoguesDispositifs de nivellement

Abrégé

A segmented detection device and detection method for a line fault. The segmented detection device for a line fault comprises: a plurality of detection resistors (11, 12, 13), each being connected to a line (10) to be detected of a corresponding detection segment in parallel; control equipment (2), one end of the control equipment being connected to a line end point (P) of the line (10) to be detected and the other end being grounded, and the control equipment (2) being used for collecting a voltage value of the line end point (P), and comparing the collected value with a standard value, so as to detect the position of the line fault; and output equipment (3), connected to the control equipment (2), and used for outputting a detection result of the control equipment (2). The segmented detection device and detection method for a line fault have a simple structure, strong operability, a reliable detection result, and high working efficiency.

Classes IPC  ?

• G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes
• G01R 19/165 - Indication de ce qu'un courant ou une tension est, soit supérieur ou inférieur à une valeur prédéterminée, soit à l'intérieur ou à l'extérieur d'une plage de valeurs prédéterminée

Abrégé

A screen component and a vibrating screen for asphalt stirring equipment. The screen component comprises a first screen (3), a second screen (4), a third screen (5), a fourth screen (11) and a fifth screen (10) which are arranged obliquely in a horizontal direction. The first screen (3), the second screen (4), the third screen (5), the fourth screen (11) and the fifth screen (10) have sequentially increasing screen hole diameters and are distributed in three layers and two columns. The third screen (5) and the fifth screen (10) are connected and arranged on a first layer. The second screen (4) and the fourth screen (11) are arranged on a second layer, and an interval (L) is formed between the two screens and used for the undersize of the third screen (5) and the oversize of the second screen (4) to pass through. The first screen (3) alone is arranged on a third layer. The third screen (5), the second screen (4) and the first screen (3) are arranged in a first column. The fifth screen (10) and the fourth screen (11) are arranged in a second column. The present invention adopts a three-layer five-section screen structure to solve the problem that the vibrating screen sieves five materials once, and the dimension of the vibrating screen is greatly reduced on the premise of ensuring the production efficiency, thereby facilitating container transport.

Classes IPC  ?

• B07B 1/28 - Tamis mobiles non prévus ailleurs, p. ex. à oscillations, à mouvement alternatif, à balancement, à basculement ou à vacillement
• B07B 1/46 - Éléments de structure constitutifs des tamis en généralNettoyage ou chauffage des tamis

Abrégé

A boom device and a concrete pump truck. The boom device comprises at least three booms (1, 2, 3, …) which are connected in turn. A root end of a first boom (1) is connected to a turntable. Some of the booms are bent booms at least occupying two columns of space. When the booms (1, 2, 3, …) are in a folded state, at least three columns of space are occupied by the boom device. The boom device optimizes the arrangement of booms and reduces the height of folded booms of a multi-boom concrete pump truck. By increasing the number of booms in a limited upright space and reducing the length of individual booms, the minimum unfolded height of the boom device can be effectively reduced.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• B60P 3/16 - Véhicules adaptés pour transporter, porter ou comporter des charges ou des objets spéciaux pour porter du mélange de béton, p. ex. avec tambour tournant
• B66C 23/42 - Installations comportant essentiellement un palonnier, une flèche ou une structure triangulaire agissant comme bras de levier, montées de façon à permettre des mouvements de translation ou d'orientation dans des plans verticaux ou horizontaux, ou bien une combinaison de ces mouvements, p. ex. grues à flèche, derricks ou grues sur tours spécialement adaptées pour être utilisées dans des emplacements particuliers ou à des usages particuliers montées sur véhicules routiers ou ferroviairesGrues à flèche à manœuvre manuelle pour utilisation dans les ateliersGrues flottantes avec flèches à configuration réglable, p. ex. repliables

Abrégé

Provided are a locking method, device and communication device when the cover is opened, the communication device comprising a micro switch, a lithium cell, a storage unit and a micro control unit; the storage unit is used to store the encrypted data for locking the communication device; the lithium cell is used to supply power for the storage unit; the micro switch is used to switch off the link between the lithium cell and the storage unit to stop the power supply for the storage unit when detecting that the cover of the communication device is opened, thus the encrypted data of the storage unit is lost; and the micro control unit is used to lock the communication device when detecting that the encrypted data of the storage unit is lost. By taking advantage of the fact that data is lost when the storage unit is powered off, the present invention controls the lithium cell to switch off the power for an SRAM when the cover of the communication device is opened, so that the encrypted data in the SRAM is lost, and an MCU cannot read the encrypted data in the SRAM, thus locking the communication device.

Classes IPC  ?

• G06F 21/60 - Protection de données
• G06F 21/86 - Boîtiers fiables ou inviolables

Abrégé

An arm support action control method and system, an arm support tail end linear displacement control method and system, and a concrete pump. The arm support action control method comprises the following steps: step 11) receiving an arm section (14, 24) action instruction, and controlling the corresponding arm section (14, 24) to act according to the arm section action instruction; step 12) determining whether an action instruction of the next arm section (15, 25) of the arm section (14, 24) is received, and if the action instruction of the next arm section (15, 25) is received, entering step 11), and if the action instruction of the next arm section (15, 25) is not received, entering step 13); and step 13) controlling the posture of the next arm section (15, 25) and a previous posture to keep unchanged all the time.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• G05D 3/12 - Commande de la position ou de la direction utilisant la contre-réaction
• E02F 3/43 - Commande de la position du plongeur ou de l'augeCommande de la succession des opérations d'entraînement

Abrégé

A method and system for controlling movement of a tail end of an execution arm. The method comprises the following steps: 11) arranging a camera (100) at a tail end (500) of the execution arm and arranging an identifier (10) in a visible area of the camera (100); 12) the camera (100) obtaining an image of the identifier (10) in real time; 13) pre-storing an initial image of the identifier at an initial position, comparing the initial image with the image of the identifier obtained in real time, and calculating real-time displacement of the tail end of the execution arm (500) relative to the initial position; and 14) controlling the movement of the tail end (500) of the execution arm according to the real-time displacement of the tail end (500) of the execution arm. In the control method and control system, the real-time displacement of the tail end (500) of the execution arm is obtained through direct image analysis, so that an instruction of controlling the movement of the execution arm is output. Compared with the calculation manner based on a plurality of superimposed sensor data signals in the prior art, the calculation manner based on image comparison is more accurate.

Classes IPC  ?

• B25J 13/08 - Commandes pour manipulateurs au moyens de dispositifs sensibles, p. ex. à la vue ou au toucher
• B25J 19/04 - Dispositifs sensibles à la vue
• G05D 3/12 - Commande de la position ou de la direction utilisant la contre-réaction

Abrégé

An arm support action control system comprises at least two arm support groups (121, 122). Each arm support group comprises at least two adjacent arm sections (21, 22, 23, 24, 25). The tail end of the last arm section (25) of the arm support group is used as the arm support group tail end (5) of the arm support group. The arm support groups each use an independent arm support action control subsystem to control the arm support group tail end to act. The arm support action control system can be used for separately carrying out separate planning on each arm support group when carrying out a control operation on the arm support tail end of the arm support system. The quantity of the arm sections of each arm support group is small, and therefore the planning algorithm is simple, so that the arm support tail end of the arm support system with multiple arm sections can be more easily controlled. Also disclosed is a concrete pump truck with the arm support action control system.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés

Abrégé

A method for detecting the content of cement in a main stirrer, comprising the following steps: step A, detecting the resistance from material under stirring state in a main stirrer (10); step B, comparing the detected resistance with the preset resistance range and making a decision that the content of cement in the main stirrer is less than standard content when the detected resistance is less than the preset resistance range, the content of cement in the main stirrer meets requirement when the detected resistance is in the preset resistance range, and the content of cement in the main stirrer is more than standard content when the detected resistance is greater than the preset resistance range. It can be accurately detected whether or not the cement in the main stirrer is lack by the method. A system for detecting the content of cement in a main stirrer and a main stirrer with the system are also disclosed.

Classes IPC  ?

• G01N 11/14 - Recherche des propriétés d'écoulement des matériaux, p. ex. la viscosité, la plasticitéAnalyse des matériaux en déterminant les propriétés d'écoulement en déplaçant un corps à l'intérieur du matériau en utilisant des corps en rotation, p. ex. moulinet

Abrégé

Disclosed is a boom device, comprising at least five sections of boom, each of the booms being hinged to each other successively, the third section of boom (3) being a curved boom; when the boom device is in a folded state, the first three sections of booms are folded into an R shape, with the fourth section of boom (4) being folded in a position above the third section of boom (3), and with the third section of boom (3), the fourth section of boom (4) and the fifth section of boom (5) being folded into an R shape, and the fifth section of boom (5) being folded in the position below the third section of boom (3). The boom device is relatively compact in structure, improving the use efficiency of the space in the vertical direction of the booms, providing enough space for the arrangement of multiple sections of booms, thus more sections of booms can be folded within the same folding space, thereby increasing the overall length of the boom device, and improving the distributing flexibility of the booms. In addition, also disclosed is engineering machinery having the abovementioned boom device.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A retractable support leg comprises a fixed support leg (10) and a movable support leg (20). When the movable support leg (20) stretches in place, coincidence portions of the movable support leg (20) and the fixed support leg (10) which are nested mutually are positioned and connected by a movable hinge pin, both the movable support leg (20) and the fixed support leg (10) are provided with pin holes, a retractable cylinder (30) of the movable support leg (20) can slide within a small displacement range along a stretching and retracting direction, and is provided with a transmission component, and the movable hinge pin is driven to be inserted or withdrawn from the pin holes via the transmission component when the retractable cylinder (30) slides. Coincidence lengths of the movable support leg and the fixed support leg of the support leg are shorter, spreading span of the support leg can be increased, and the stability of an integral vehicle can be further improved; simultaneously, a stressed manner of the support leg can be improved, and the structural reliability is enhanced. Further disclosed is an engineering machine provided with the retractable support leg.

Classes IPC  ?

• B60S 9/02 - Dispositifs sur les véhicules, venant en contact avec le sol, pour supporter, soulever ou manœuvrer le véhicule, entièrement ou en partie, p. ex. crics incorporés pour uniquement soulever ou supporter
• B66C 23/80 - Appuis, p. ex. des longerons, pour grues mobiles actionnés hydrauliquement

Abrégé

A shifting control method for an engineering machinery with a hydro-mechanical transmission system, includes: firstly, sending a shifting command; secondly, separating a driving disk connected with a driving motor from a first driven disk corresponding to current gear in a gearbox; then calculating the rotational speed n1 of a second driven disk corresponding to the target gear; finally, adjusting the output rotational speed of the driving motor and making it close to the rotational speed n1 of the second driven disk, engaging the said driving disk and the second driven disk completely when the absolute value of the difference between the rotational speed n0 of the driving disk and the rotational speed n1 of the second driven disk is less than a predetermined value, the shifting operation is achieved. The shifting collision is reduced, the stabilization and shifting quality during the shifting process are increased and the service life of the driving disk and the driven disk are prolonged. Also disclosed are a shifting control system corresponding to the said shifting control method and the engineering machinery with a hydro-mechanical transmission including the shifting system.

Classes IPC  ?

• F16H 59/46 - Entrées de commande vers des transmissions transmettant un mouvement rotatif pour changements de vitesse ou pour mécanismes d'inversion les entrées étant fonction d'une vitesse fonction de la comparaison de vitesses
• F16H 61/04 - Adoucissement du changement du rapport

Abrégé

An arm stand device for a concrete pump truck and a concrete pump truck comprising the arm stand device. The arm stand device comprises a plurality of arm stands, and the plurality of arm stands comprises a first arm stand (21) hinged with a rotary table (1) of the concrete pump truck and a second arm stand (22) hinged with the first arm stand (21). In a folded state, the first arm stand (21) is disposed at a side of the rotary table (1) close to a driving cab (3) of the concrete pump truck, and the second arm stand (22) is further hinged above the first arm stand (21). The structure design of the arm stand device enables the first arm stand and the second arm stand to be unfolded at the same time in one aspect, enables the gravity center of the entire truck to move forward in another aspect, and extends the last two arm stands of the arm stand device in still another aspect.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A water hose pressurizing device and method, and a fire fighting equipment. The water hose pressurizing device comprises a water flow conveying hose formed of multiple water hoses (1) in communication with each other. An axial flow electric pump (2) is disposed at a node between two adjacent water hoses (1). An axial center of blades of the axial flow electric pump (2) are parallel to a water flow direction in the water hose (1), and the axial flow electric pump (2) is used for pressurizing, along the water flow direction, water flowing through the node. The water hose pressurizing device pressurizes water in a relay manner after water passes through the nodes in order, thereby solving the problem that it is difficult to convey water to a high-building for fire fighting. The present invention has the advantages that the fire-fighting efficiency is high, the operation is flexible, and the structure is compact.

Classes IPC  ?

• A62C 31/00 - Émission de substances extinctrices
• A62C 31/28 - Accessoires pour dispositifs de jet, p. ex. supports

Abrégé

A pumping device comprises: a first pumping cylinder (1) and a second pumping cylinder (2), a first piston (31) being disposed in the first pumping cylinder (1) and a second piston (32) being disposed in the second pumping cylinder (2); a feed port (4) and a discharge port (5), the first pumping cylinder (1) being in communication with a pipe between the feed port (4) and the discharge port (5), and the second pumping cylinder being in communication with the discharge port (5); a first distribution valve (V1), disposed on a pipe between the feed port (4) and the first pumping cylinder (1); a second distribution valve (V2), disposed on a pipe between the first pumping cylinder (1) and the second pumping cylinder (2); and a hydraulic oil way, for supplying oil to both the first pumping cylinder (1) and the second pumping cylinder (2), so as to drive reciprocating motion of the first piston (31) and the second piston (32) in opposite directions. Also disclosed is an engineering machinery comprising the pumping device. The pumping device has advantages comprising desirable pumping continuity, convenience in protection of an engine, and a compact structure.

Classes IPC  ?

• F04B 15/02 - Pompes adaptées pour travailler avec des fluides particuliers, p. ex. grâce à l'emploi de matériaux spécifiés pour la pompe elle-même ou certaines de ses parties les fluides étant visqueux ou non homogènes
• F04B 19/00 - "Machines" ou pompes ayant des caractéristiques particulières non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F15B 11/02 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie
• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs

Abrégé

A remote control system applied to an engineering machinery comprises a remote controller (1), comprising an operating unit (2, 3) for controlling a plurality of execution parts (9) correspondingly, and used for generating and sending first trigger information comprising identifier information of the operating unit (2, 3); a controller (7), connected to an indication device (10) and used for, after receiving the first trigger information, controlling the indication device (10) to indicate an execution part (9) corresponding to the identifier information or a controlled action of the corresponding execution part (9). Also disclosed is an engineering machinery provided with the indication device (10) for indicating the execution part (9) or a controlled action of the execution part (9). This system can improve the convenience of remotely controlling the execution parts in the engineering machinery.

Classes IPC  ?

• G05B 19/04 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique

Abrégé

A variable frequency vibration control device for a double-steel-wheel road roller comprises a first vibration motor and a second vibration motor in series connected with each other. The first vibration motor and the second vibration motor are respectively in parallel connected to a first shunt branch circuit and a second shunt branch circuit. The flow flowing through the vibration motors can be changed by the shunt branch circuits, and then the vibration frequency of the vibration motors is changed. A double-steel-wheel road roller with the variable frequency vibration control device is also disclosed. The vibration frequency of the vibration motors can be adjusted via the variable frequency vibration control device whenever necessary so as to achieve various operating modes.

Classes IPC  ?

• E01C 19/28 - Rouleaux vibrants ou rouleaux soumis à des percussions, p. ex. à un martèlement

Abrégé

An asphalt concrete mixing plant and its dust removing device, wherein the dust removing device is used for collecting dust generated during a mixing console (6) discharging, and includes an induced draft fan (1), a dust collecting duct (2), a dust exhaust duct (3) and a controlling system (15), wherein the dust collecting duct (2) includes: a dust collecting hood (21), which comprises an outer board (21a) and an inner board (21b), the outer board (21a) is connected with a lower part of discharging apparatus in the mixing console (6), the inner board (21b) comprises a multi-orifice structure, a ring duct is formed between the outer board (21a) and the inner board (21b); a dust collecting conduit (22), its first end is connected with the dust collecting hood (21),and its second end is connected with the induced draft fan (1); the dust successively passes through the multi-orifice structure in the inner board (21b), the ring duct, the dust collecting conduit (22), and then enters into the induced draft fan (1). This device has the advantages such as high dust collecting efficiency, energy conservation, and environmental protection etc.

Classes IPC  ?

• B08B 15/04 - Précautions prises pour empêcher les crasses ou les fumées de s'échapper de la zone où elles sont produitesRamassage ou enlèvement des crasses ou des fumées de cette zone provenant d'un espace restreint, p. ex. d'un outil
• B28C 9/02 - Disposition générale ou schéma d'installation pour la production de mélanges d'argile ou de ciment avec d'autres substances

Abrégé

Disclosed are a box-shaped structural member for engineering machinery, a boom system and engineering machinery. The box-shaped structural member for engineering machinery comprises a structural member body, structural member body forming a central cavity; the central cavity is filled with sandwiched materials having a density smaller than that of the material of the structural member body; and the density of the sandwiched materials depends on the materials chosen as required. The materials selected can be foam materials, which can in turn be rigid foam materials. Since the sandwiched materials have lower specific weight, the box-shaped structural member filled with the sandwiched materials has a limited increase in weight. Meanwhile, the sandwiched materials have a corresponding elastic modulus, thereby having good absorption properties against impact and vibration; the box-shaped structural member is formed into a solid structure by filling the central cavity of the box-shaped structural member with the sandwiched materials; and the strength of the box-shaped structural member is greatly improved.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• B66C 23/78 - Appuis, p. ex. des longerons, pour grues mobiles

Abrégé

Disclosed in the present invention is an integrated-type steering wheel, which can be applied on construction machinery, comprises an operating panel (1) and a steering wheel main body (3). The steering wheel main body (3) is arranged rotatablely along periphery of the operating panel (1), and there is a display screen (111) and control buttons (112) on the operating panel (1), also the operating panel (1) is provided with switches (113) and warning lamps (114). Operators can control the steering wheel main body (3) with their hands, as well implement the control of the control buttons (112) and the switches (113), and the operators focus on the operating panel (1) so that they can get working conditions and faults of all systems of the construction machinery, which improves the working efficiency and the operating comfort of the operators.

Classes IPC  ?

• B62D 1/10 - MoyeuxLiaisons entre le moyeu et la colonne de direction, p. ex. réglables
• B60K 37/00 - Tableaux de bord

Abrégé

A detection device is used for detecting the height of a material in a container. The detection device comprises a probing rod (1), a plurality of detection units being axially arranged on the probing rod, the detection unit comprising a switch element and a membrane (3) covering the switch element, the membrane (3) being capable of turning on the switch element that corresponds to a material position when being deformed due to the extrusion of the material; and a control mechanism (5), comprising a control unit (51) electrically connected with the switch element, the control unit (51) being used for calculating the height of the material stored in the container according to the connection/disconnection condition of the switch element. The detection device can detect the height of the material in the container in real time, control the discharging speed according to the height of the material, and prevent the materials from flowing out of the container due to the excessive quantity or an air suction phenomenon of the pumping apparatus due to insufficient materials. Also disclosed is a concrete pumping apparatus, comprising the detection device.

Classes IPC  ?

• G01F 23/22 - Indication ou mesure du niveau des liquides ou des matériaux solides fluents, p. ex. indication en fonction du volume ou indication au moyen d'un signal d'alarme en mesurant des variables physiques autres que les dimensions linéaires, la pression ou le poids, selon le niveau à mesurer, p. ex. par la différence de transfert de chaleur de vapeur ou d'eau

Abrégé

A land leveler leveling control system comprises a datum plane generation device (101), a sensor, a controller (102), and a target instruction input device (103). The sensor comprises an altitude sensor (104). The controller (102) is provided with reference points (a) arranged at intervals with shovel blades in a land leveler. A detection signal comprises an altitude signal indicating a distance from the reference point (a) to an intersection between the altitude sensor (104) and a datum plane (b). The controller (102) comprises a signal calculation unit (1021) used for calculating a location of the reference point (a) relative to the datum plane (b) according to the input detection signal, calculating a target location of the shovel blade relative to the reference point (a) according to the location of the reference point (a) and an input target location signal, performing conversion according to the calculated target location of the shovel blade to obtain a motion quantity of a drive mechanism in the land leveler, and outputting a control signal to the drive mechanism in the land leveler.

Classes IPC  ?

• E02F 3/84 - Entraînement ou dispositifs de commande correspondants
• E02F 3/85 - Utilisation de systèmes hydrauliques ou pneumatiques

Abrégé

Provided are a method for obtaining position parameters of a tail end of a jib system, a jib system, and an engineering machine comprising the jib system. The method for obtaining position parameters of a tail end of a jib system comprises: first obtaining an inclination angle of each arm before deformation, and reference lengths of each arm before and after deformation; then determining change of an inclination angle of a corresponding arm according to the lengths of each arm before and after deformation, then obtaining change of the length of each arm in a predetermined direction according to the change of the inclination angle of each arm, then calculating a sum of lengths of all arms in the predetermined direction, and obtaining position parameters of a tail end of a jib system. The method for obtaining position parameters of a tail end of a jib system not only may avoid an accumulative error generated because of the precision of an inclination angle sensor, but also may detect reference lengths of each arm before and after deformation through an appropriate length sensor, thereby easily ensuring the detection precision of the reference length of each arm, and more precisely obtaining an actual inclination angle of each arm, so as to enable position parameters of the tail end of the jib system to be more accurate.

Classes IPC  ?

• G01B 21/00 - Dispositions pour la mesure ou leurs détails, où la technique de mesure n'est pas couverte par les autres groupes de la présente sous-classe, est non spécifiée ou est non significative
• G05D 3/12 - Commande de la position ou de la direction utilisant la contre-réaction
• B66C 23/88 - Mécanisme de sécurité
• B25J 19/00 - Accessoires adaptés aux manipulateurs, p. ex. pour contrôler, pour observerDispositifs de sécurité combinés avec les manipulateurs ou spécialement conçus pour être utilisés en association avec ces manipulateurs
• B25J 13/00 - Commandes pour manipulateurs
• B25J 9/06 - Manipulateurs à commande programmée caractérisés par des bras à articulations multiples

Abrégé

The present invention relates to the technical field of arm-support type engineering machineries, disclosed in particular is an arm-support vibration suppression method, comprising the following steps: step A, detecting in real time amplitude A, phase & and period T of the vibration at the end of a last arm-support; step B, comparing the amplitude A with a preset value, if the amplitude A is larger than the preset value, then proceeding to step C, and if the amplitude A is smaller than the preset value, then ending the steps; step C, actuating the arm-support hydraulic cylinder on at least one arm-support to move, enabling the end of the last arm-support to generate a motion component having amplitude A1, phase &1 and period T; the difference between amplitude A1 and amplitude A is smaller than a preset difference, and the difference between phase &1 and phase & is nT/2, wherein n is an odd number. Also disclosed are an arm-support vibration suppression system and an arm support-type engineering machinery therewith.

Classes IPC  ?

• F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps

Abrégé

A jib vibration suppression method, a jib vibration suppression system and a jib-type engineering machine having the jib vibration suppression system. The jib vibration suppression method comprises the following steps of: step A, detecting the amplitude A and frequency f of vibration at an end of a tail section of a jib in real time; and step B, driving a jib cylinder on at least one section of the jib to operate, so that the end of the tail section of the jib generates a movement component having the amplitude A1 and frequency f1, the amplitude A1 being less than the amplitude A, and the frequency f1 being greater than the frequency f.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F16F 15/027 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides comprenant des dispositifs de commande

Abrégé

A grader and a ripper thereof, comprising an oil cylinder (7), a pair of cantilevers (5), tooth racks (15) fixed on one end of each of the pair of cantilevers (5), and ripper teeth (11) fixed on the tooth racks (15). The other ends of the pair of booms (5) are hinged to a tractor frame (10) via a first hinge shaft (3). One end of the oil cylinder (7) is hinged to the tractor frame (10) via a second hinge shaft (9), while the other end of the oil cylinder (7) is hinged to the one pair of cantilevers (5) or the tooth racks (15) via a third hinge shaft (6). The pair of cantilevers (5) is driven by the oil cylinder (7) to swing around the first hinge shaft (3). By arranging the ripper on the tractor frame (10), movement interference is prevented to the greatest extent possible between the ripper and other parts such as the tractor frame (10), a front axle (2), and wheels. Also, because the ripper is arranged under the tractor frame (10), power transmission is facilitated, and only the oil cylinder (7) is required for hinging to the pair of cantilevers (5) or the tooth rack (15). Also comprised is the grader provided with the ripper.

Classes IPC  ?

• E02F 3/76 - Niveleuses, bulldozers ou machines analogues avec lame racleuse ou éléments en soc de charrue ou éléments analoguesDispositifs de nivellement
• E02F 5/32 - Outils à défoncer

Abrégé

Disclosed is an engine speed control method, which is used to control an output speed of an engine of a jib-type engineering machine when a jib operates, and comprises: step A, detecting a load pressure of a hydraulic system and a moving speed of the jib; step B, a central control unit, according to the load pressure and the moving speed of the jib, determining a target speed of the engine; and step C, the central control unit sending the target speed of the engine to an engine control unit, and the engine control unit, according to a current speed value fed back by the engine, performing speed closed-loop adjustment, so that the current speed of the engine consists with the target speed of the engine. Further disclosed are an engine speed control system and a jib-type engineering machine having the engine speed control system. The engine speed control method has a high degree of automation and high adaptability.

Classes IPC  ?

• F02D 29/02 - Commande de moteurs, cette commande étant particulière aux dispositifs entraînés, ces dispositifs étant autres que des organes ou accessoires essentiels à la marche du moteur, p. ex. commande de moteur par des signaux extérieurs particulière aux moteurs entraînant des véhiculesCommande de moteurs, cette commande étant particulière aux dispositifs entraînés, ces dispositifs étant autres que des organes ou accessoires essentiels à la marche du moteur, p. ex. commande de moteur par des signaux extérieurs particulière aux moteurs entraînant des hélices à pas réglable
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F02D 29/00 - Commande de moteurs, cette commande étant particulière aux dispositifs entraînés, ces dispositifs étant autres que des organes ou accessoires essentiels à la marche du moteur, p. ex. commande de moteur par des signaux extérieurs

Abrégé

A bridge type ship loading and unloading machine for lightering comprises three main parts that are a ship unloader (1), a ship loader (2) and an intermediate belt conveyer (3). The ship loader (2) is set side below the ship unloader (1). The telescopic arm belt conveyer (21) of the ship loader (2) is located above a pontoon (4) and a ship (6) to be loaded which is on one side of the pontoon (4). The telescopic arm belt conveyer (21) can rotate and pitch. The intermediate belt conveyer (3) is located between the ship unloader (1) and the ship loader (2). One end of the intermediate belt conveyer (3) is below the outlet of a hopper (13) of the ship unloader (1) and the other end of the intermediate belt conveyer (3) connects the telescopic arm belt conveyer (21) of the ship loader (2). The ship loader (2) and the intermediate belt conveyer (3) are supported on a supporting frame (11). Using the ship loading and unloading machine that integrates the three parts into one saves lots of trailer and metal structures et al., reduces the mass of the machine, makes the whole structure of the system simple and compact, occupies less space and reduces the cost of the lightering system.

Classes IPC  ?

• B65G 67/60 - Chargement ou déchargement des navires
• B65G 69/28 - Rampes de chargementQuais de chargement
• B63B 27/00 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers
• B63B 27/30 - Aménagement des équipements de bord pour l'embarquement ou le débarquement des cargaisons ou des passagers pour le transfert entre des navires en mer ou entre un navire et un poste situé en mer

Abrégé

A burner comprises: a combustion chamber, an ignitor (4), an electric heating element (9) and a power supply connector. The combustion chamber comprises an outer combustion chamber (8) and an inner combustion chamber (10). The electric heating element (9) is installed between the outer combustion chamber (8) and the inner combustion chamber (10), and is connected to a power supply through the power supply connector. The burner can provide uniform and high temperature field, so that the combustion performance and combustion stability of fuels are enhanced, the pollution to the matching equipment is reduced, and the overall failure occurrence rate of the equipment is decreased.

Classes IPC  ?

• F23D 11/44 - Dispositifs de réchauffageDispositifs vaporisateurs

Abrégé

Disclosed are a boom structure and a concrete pumping vehicle arranged with the boom structure, wherein an end of a first section boom (1) of the boom structure is hinged to a rotary table (10), adjacent ends of adjacent booms are hinged, and telescoping oil cylinders (20) are provided between adjacent booms, with both ends of each telescoping oil cylinder (20) being respectively hinged to the front and the rear booms thereof, and with the telescoping oil cylinder (20) being internally positioned in one of the booms thereof when retracted. The boom structure is of small clearance after being folded, such that more booms can be deployed therein so it can be adapted to operate in a narrow space.

Classes IPC  ?

• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• B60P 3/16 - Véhicules adaptés pour transporter, porter ou comporter des charges ou des objets spéciaux pour porter du mélange de béton, p. ex. avec tambour tournant

Abrégé

A power supply circuit comprises an MOS transistor (U2) and a bias control circuit. A source (S) and a drain (D) of the MOS transistor are connected in series between a power supply and a load. The bias control circuit controls a bias status between a gate and the source of the MOS transistor according to a received power-on time sequence signal (P), so as to control a status of a power supply circuit supplying power to the load according to the power-on time sequence signal. The power supply circuit further comprises a piezoresistor (R1) and a transient voltage suppressor TVS diode (D2), thereby implementing a transient protection function of the power supply circuit with less devices.

Classes IPC  ?

• H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs