Abrégé

The present invention relates to the field of engineering machinery, specifically relates to the field of design and manufacturing of hydraulic oil cylinders, and particularly relates to a thermoplastic polyimide supporting ring and a preparation method therefor. By using a composite application technology of a nano nucleating agent and a two-dimensional transition metal sulfide, the present invention increases the crystallization speed of a polyimide supporting ring on the molecular structure level, shortens the injection molding time, and optimizes the molding effect; and on the macroscopic level, the wear resistance of polyimide is improved, and the service life is prolonged. Upon test verification, the polyimide supporting ring of the present invention has the effects of good forming quality, a high high-temperature compression strength, good wear resistance and a long service life.

Classes IPC  ?

• C08L 79/08 - Polyimides; Polyester-imides; Polyamide-imides; Polyamide-acides ou précurseurs similaires de polyimides
• C08K 9/04 - Ingrédients traités par des substances organiques
• C08K 3/30 - Composés contenant du soufre, du sélénium ou du tellure

Abrégé

The present disclosure relates to a method for controlling a backhoe loader and a backhoe loader, and relates to the field of engineering machinery. The method for controlling a backhoe loader includes: setting a power upper threshold P_0 for a variable displacement pump of the backhoe loader according to an operating mode of the backhoe loader; where the backhoe loader includes an engine, the variable displacement pump, a traveling system, a loading operation system, and a digging operation system; the operating mode includes: a traveling mode, a loading operation mode, and a digging operation mode; and adjusting the power upper threshold P_0 of the variable displacement pump according to an actual load of the backhoe loader in a current operating mode. In the technical solutions, the power upper thresholds P_0 are different in different operating modes. Power of the variable displacement pump is adjusted in real time.

Classes IPC  ?

• E02F 9/22 - Entraînements hydrauliques ou pneumatiques
• E02F 3/96 - Dragues; Engins de terrassement entraînés mécaniquement avec des dispositions pour l'emploi alterné d'éléments de creusement différents
• E02F 9/24 - Dispositifs de sécurité
• E02F 9/26 - Dispositifs indicateurs
• F15B 20/00 - Dispositions propres à la sécurité pour systèmes de manœuvre utilisant les fluides; Utilisation des dispositifs de sécurité dans les systèmes de manœuvre utilisant des fluides; Mesures d'urgence pour les systèmes de manœuvre utilisant des fluides

Abrégé

The present disclosure relates to the technical field of engineering machinery automation. Provided are a semantic segmentation method, apparatus and system, and engineering machinery equipment. The method comprises: processing an original image of an operation area of engineering machinery equipment, so as to obtain at least one image feature map group, wherein each image feature map group comprises a plurality of image feature maps having different scales; processing point cloud data of the operation area, so as to obtain a radar feature map group; for each image feature map group, executing fusion with the radar feature map group, so as to obtain a fused feature map; and obtaining a semantic segmentation result on the basis of the fused feature map.

Classes IPC  ?

• G06V 10/26 - Segmentation de formes dans le champ d’image; Découpage ou fusion d’éléments d’image visant à établir la région de motif, p.ex. techniques de regroupement; Détection d’occlusion

Abrégé

A self-priming pump, comprising: a primary pump body unit (10), which is provided with a primary volute (11), a primary impeller (12) and a primary liquid output pipe (13), wherein the primary volute (11) is provided with a first liquid inlet (IN1), the primary impeller (12) is arranged inside the primary volute (11), and the primary liquid output pipe (13) communicates with the primary volute (11); a secondary pump body unit (20), which comprises a secondary volute (21), a secondary impeller (22), a secondary liquid output pipe (23) and a liquid suction chamber (24), wherein the secondary impeller (22) is arranged inside the secondary volute (21), and the secondary liquid output pipe (23) and the liquid suction chamber (24) both communicate with the secondary volute (21); and a switching valve (30), which comprises a valve shell (31) and a valve core (32), wherein the valve shell (31) is provided with a second liquid inlet (IN2), the valve core (32) is arranged inside the valve shell (31), and the valve shell (31) communicates with both the liquid suction chamber (24) and the primary volute (11). The switching valve (30) is configured to close the second liquid inlet (IN2) by means of the valve core (32) and enable communication between the liquid suction chamber (24) and the primary volute (11) via the valve shell (31) in a state where the valve core (32) is located at a first position (P1), and close a communication passage between the valve shell (31) and the primary volute (11) by means of the valve core (32) and enable communication between the liquid suction chamber (24) and the second liquid inlet (IN2) via the valve shell (31) in a state where the valve core (32) is located at a second position (P2). The self-priming pump and a flood drainage operation apparatus comprising the self-priming pump can improve the scenario adaptability of drainage operation.

Classes IPC  ?

• F04D 1/10 - Pompes multiétagées avec des moyens de changer le trajet du flux à travers les étages, p.ex. par des transformations série-parallèle
• F04D 9/02 - Pompes à auto-amorçage
• F04D 13/02 - Ensembles comprenant les pompes et leurs moyens d'entraînement
• F04D 15/00 - Commande, p.ex.régulation de pompes, d'installations ou de systèmes de pompage

Abrégé

A traffic control system for mining trucks and a method for same. The traffic control system (100) comprises a map management server (110), configured to draw a mine road into a mine map; a path planning server (120), configured to plan a road node route on the basis of the mine map, and plan a transition route when a mining truck (140) switches lanes during a truck passing process; and a traffic control server (130), configured to store lane states of a plurality of lanes in the mine map, arbitrate a driving permission request of a mining truck (140) on the basis of the lane state of a lane into which the mining truck (140) is about to drive, approve the driving permission request of a mining truck (140) that meets a driving condition, and dynamically update the lane state according to the arbitration result, the lane states comprising an occupied state and an idle state. The traffic control system (100) and the method for same improve the efficiency off truck passing by the mining truck (140) on mine roads.

Classes IPC  ?

• G05D 1/698 - Attribution des commandes
• G05D 1/246 - utilisant des cartes d’environnement, p. ex. localisation et cartographie simultanées [SLAM]
• G05D 1/693 - pour éviter toute collision entre les véhicules
• G05D 107/70 - Sites industriels, p. ex. entrepôts ou usines

Abrégé

An integrated valve is made by a method for designing and manufacturing a valve body of the integrated valve. The method for designing the valve body of the integrated valve includes: determining an internal flow channel structure of a valve body model of the integrated valve according to a hydraulic function implemented by the integrated valve; determining a position and a size of respective mounting structures, matched with the external devices, in the valve body model; determining a work structure of the valve body model according to the internal flow channel structure, and the position and the size of respective mounting structures; determining an internal connection plane of the valve body model, and determining an internal supporting table; and determining an external shell of the valve body model, and connecting the external shell with the work structure and the internal supporting table.

Classes IPC  ?

• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
• G06F 30/23 - Optimisation, vérification ou simulation de l’objet conçu utilisant les méthodes des éléments finis [MEF] ou les méthodes à différences finies [MDF]

Abrégé

The present disclosure relates to a backhoe loader energy recovery and reuse system and a control method thereof, and a backhoe loader, wherein the system comprises: an actuator, configured to drive a working device to perform an action with hydraulic oil as a medium, and having a first cavity and a second cavity; a reversing valve, having a first working oil port communicated with the first cavity and a second working oil port communicated with the second cavity, the reversing valve being configured to reverse the actuator; a stabilizing valve group, having a first oil port, a second oil port, a third oil port and a fourth oil port, the first oil port and the second oil port being communicated with the first cavity and the second cavity, respectively, and the third oil port being communicated with an oil tank; and an energy storage part, communicated with the fourth oil port and configured to store hydraulic energy; wherein the first oil port and the third oil port have a first communication state therebetween, in which the hydraulic oil in the first cavity can enter the oil tank; the second oil port and the fourth oil port can be selectively connected or disconnected, and in a connected state, the second cavity is communicated with the energy storage part.

Classes IPC  ?

• E02F 9/22 - Entraînements hydrauliques ou pneumatiques

Abrégé

A method for estimating the coordinates of a bucket tooth tip, the method comprising: establishing a kinematic model of an excavator according to the size of each part of the excavator, and acquiring measured values of the coordinates of a bucket tooth tip of the excavator in combination with the angle of each part of the excavator, which is measured by an excavator sensor (100); acquiring system noise and measurement noise of the coordinates of the bucket tooth tip of the excavator (200); and according to the measured values of the coordinates of the bucket tooth tip of the excavator, and the system noise and measurement noise of the coordinates of the bucket tooth tip of the excavator, determining estimated values of the coordinates of the bucket tooth tip of the excavator (300). In this way, the measurement precision of the three-dimensional coordinates of bucket tooth tips and the construction quality of an excavator are improved. Further provided are an apparatus and system for estimating the coordinates of a bucket tooth tip, and an excavator and a storage medium.

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

Abrégé

The present disclosure relates to a drive system for an engineering vehicle, a drive method, and an engineering vehicle. The drive system for an engineering vehicle includes: front wheels, rear wheels, a drive device, a first drive axle, a second drive axle, a first pressure detection device, a first calculation device, a speed acquisition device, and a drive distribution device. The first drive axle is connected between the drive device and the front wheels, and the second drive axle is connected between the drive device and the rear wheels. The first pressure detection device is configured to detect a pressure load on the first drive axle and a pressure load on the second drive axle, the first calculation device is configured to calculate a speed difference between the front wheels and the rear wheels, and the speed acquisition device is configured to acquire a running speed of the engineering vehicle. The drive distribution device is in signal connection with the first pressure detection device, the first calculation device, and the speed acquisition device. The drive distribution device is configured to adjust a drive mode of the drive system for an engineering vehicle according to the pressure load on the first drive axle, the pressure load on the second drive axle, the speed difference between the front wheels and the rear wheels, and the running speed.

Classes IPC  ?

• B60W 30/188 - Commande des paramètres de puissance de la ligne de transmission, p.ex. déterminant la puissance requise
• B60K 17/354 - Agencement ou montage des transmissions sur les véhicules pour entraînement simultané des roues avant et arrière, p.ex. véhicules à quatre roues motrices comportant des ensembles mécaniques séparés pour transmettre l'entraînement aux roues ou trains de roues avant ou arrière
• B60W 30/18 - Propulsion du véhicule
• B60W 30/182 - Sélection entre plusieurs modes opératoires, p.ex. confort ou sportif
• B60W 10/119 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents avec commande des transmissions intégrales, p.ex. engrenages de transfert ou embrayages pour répartir le couple entre les axes avant et arrière

Abrégé

Disclosed are an implement descending stability control method and system and a tractor. An outlet of a main pump is communicated with an inlet of a main overflow valve, an inlet of a constant-difference overflow valve and an inlet of an implement control valve. An oil outlet of the implement control valve is connected with a spring cavity of the constant-difference overflow valve through a steady-state throttle valve and is communicated with an inlet of a switching valve. An oil outlet of the switching valve is connected with a rodless cavity of a suspension cylinder in a suspension mechanism, and the rodless cavity of the suspension cylinder is communicated with an inlet of a descending valve. A rod cavity of the suspension cylinder is connected with an inlet of a secondary overflow valve.

Classes IPC  ?

• A01B 63/10 - Dispositifs ou agencements de levage ou de réglage pour machines ou instruments agricoles pour instruments montés sur tracteurs à manœuvre hydraulique ou pneumatique
• F15B 15/28 - Moyens pour indiquer la position, p.ex. fin de course
• F15B 21/08 - Systèmes de servomoteur comportant des moyens de commande actionnés électriquement

Abrégé

The present disclosure relates to an integrated hydraulic power device and a fire truck. The integrated hydraulic power device includes: an integrated valve including a valve body having an internal flow passage structure, a first mounting end and a second mounting end; a motor fixedly arranged at the first mounting end; a hydraulic oil tank fixedly arranged at the second mounting end; and a hydraulic pump located within the hydraulic oil tank and in drive connection with the motor, wherein the hydraulic pump has an oil suction port for drawing oil from the hydraulic oil tank, and the internal flow passage structure is communicated with the hydraulic oil tank and the hydraulic pump.

Classes IPC  ?

• F15B 13/04 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique
• F15B 1/26 - Réservoirs d'alimentation ou de pompage
• F15B 13/10 - Dispositions particulières pour faire fonctionner le dispositif entraîné sans utiliser la pression du fluide, p.ex. en cas d'urgence

Abrégé

A concrete placing boom (12). The concrete placing boom (12) is provided with supports (17), the supports (17) being configured to support a hose (15) at the tail end of a concrete conveying pipe (11); each support (17) is formed by a multi-layer composite tube made of at least two layers of aluminum alloys that are stacked; the at least two layers of aluminum alloys comprise an outermost-layer aluminum alloy (171) and an innermost-layer aluminum alloy (173); in the at least two layers of aluminum alloys, the outermost-layer aluminum alloy (171) has better wear resistance, and the innermost-layer aluminum alloy (173) has higher rigidity. The supports (17) have improved wear resistance and bearing performance and reduced weight, thereby improving the bearing performance and prolonging the service life of the concrete placing boom (12).

Classes IPC  ?

• F16L 9/02 - Tuyaux rigides en métal
• B22D 13/00 - Coulée par centrifugation; Coulée utilisant la force centrifuge
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• B22D 19/16 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour fabriquer des moulages composites à partir de métaux différents, p.ex. pour fabriquer des cylindres de laminoirs

Abrégé

The present disclosure provides an apparatus and a method for predicting attenuation of a pre-tightening force of a bolt, which relate to the field of prediction on the pre-tightening force of a bolt. The apparatus for predicting attenuation of a pre-tightening force of a bolt includes a pre-tightening force coefficient measuring device, including a clamping assembly, a pre-tightening force detecting assembly, a tightening assembly and a time length measuring assembly. The clamping assembly is configured to fix a bolt to be detected; the pre-tightening force detecting assembly is configured to measure the pre-tightening force to the bolt; the tightening assembly is configured to apply the pre-tightening force to the bolt; the time length measuring assembly is configured to measure a time length of each sampling in the process of tightening the bolt.

Classes IPC  ?

• G01L 5/24 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour déterminer la valeur du couple ou du moment de torsion pour le serrage d'un écrou ou d'un autre organe soumis à une contrainte analogue
• G01L 27/00 - Test ou étalonnage des appareils pour la mesure de la pression des fluides

Abrégé

A gear slicing tool and a manufacture method thereof are provided. The gear slicing tool includes a gear slicing tool body having concave and/or convex parts formed on a tool surface of the gear slicing tool body and a composite film layer disposed on the tool surface. The composite film layer includes a metal film layer, a transition film layer, and a functional film layer. A material of the metal film layer includes a metal. The transition film layer includes a first film layer and a second film layer. A material of the first film layer includes a nitride of the metal. A material of the second film layer includes a nitride of an alloy of the metal and aluminum. A material of the functional film layer includes a nitride of an alloy of the metal, aluminum, and silicon.

Classes IPC  ?

• B26D 1/00 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupant; Appareils ou machines à cet effet; Eléments coupants à cet effet
• B26D 1/143 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupant; Appareils ou machines à cet effet; Eléments coupants à cet effet comportant un élément qui ne suit pas le mouvement de la pièce ayant un élément coupant se déplaçant autour d'un axe avec un élément circulaire, p.ex. un disque tournant autour d'un axe fixe

Abrégé

A material storage system, a suction apparatus, and a material storage system control method. The material storage system comprises a material storage mechanism (1), which is provided with a first material bin (11) and a second material bin (12) and is capable of receiving materials through a feed port (2); a feeding and distributing mechanism (3), which is arranged on a material movement path between the material storage mechanism (1) and the feed port (2) and is configured to selectively make the feed port (2) be in communication with the first material bin (11) or the second material bin (12), so that the first material bin (11) or the second material bin (12) receives the materials through the feed port (2); a discharging mechanism (4), which is operably connected to the first material bin (11) and the second material bin (12) and is configured to selectively switch the first material bin (11) and the second material bin (12) between being open and being closed, so that the materials are discharged from the first material bin (11) or the second material bin (12); and a processor (5), which is in signal connection with the feeding and distributing mechanism (3) and the discharging mechanism (4) and is configured to switch the material storage mechanism (1) between a first operating state and a second operating state by means of the feeding and distributing mechanism (3) and the discharge mechanism (4), so that in the first operating state of the material storage mechanism (1), the material storage mechanism (1) receives the materials by means of the first material bin (11) and discharges the materials by means of the second material bin (12), and in the second operating state of the material storage mechanism (1), the material storage mechanism (1) receives the materials by means of the second material bin (12) and discharges the materials by means of the first material bin (11).

Classes IPC  ?

• B65G 53/66 - Utilisation de dispositifs indicateurs ou de commande, p.ex. pour commander la pression du gaz, pour régler le pourcentage matériaux-gaz, pour signaler ou éviter l'embouteillage des matériaux
• B65G 53/36 - Aménagement des réceptacles
• B65G 53/28 - Systèmes utilisant une combinaison de pression et d'aspiration de gaz
• B65G 53/56 - Interrupteurs
• B65G 53/50 - Dispositifs pneumatiques

Abrégé

The present application provides a control box, comprising: a primary box, comprising a first box body and a handle, wherein the handle is arranged on the first box body; and a secondary box, comprising a second box body and an electrical device, wherein the electrical device is arranged on the second box body, and the second box body is connected to the side of the first box body in the left-right direction or the front-back direction of a construction machine and is supported by the first box body. On this basis, the space occupied by the control box can be effectively reduced.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails
• E02F 9/22 - Entraînements hydrauliques ou pneumatiques

Abrégé

Provided are an integrated valve and methods for designing and fabricating a valve body of the integrated valve. The method for designing the valve body (30) of the integrated valve comprises: according to a hydraulic function implemented by the integrated valve, determining an internal flow channel structure of a valve body model of the integrated valve (S10); according to positions and connection means of external devices connected to the integrated valve, determining positions and sizes of mounting structures, on the valve body model, cooperating with the external devices (S20); according to the internal flow channel structure and the positions and sizes of the mounting structures, determining an effective working structure of the valve body model (S30); according to the center lines of flow channels in the internal flow channel structure, determining an internal connection surface of the valve body model, and according to the internal connection surface, determining an internal support platform (34) formed to support the effective working structure (S40); and determining an external housing (31) of the valve body model, and connecting the external housing (31) to both the effective working structure and the internal support platform (34) (S50).

Classes IPC  ?

• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
• G06F 30/17 - Conception mécanique paramétrique ou variationnelle

Abrégé

Provided are a method and device for controlling a vehicle and a vehicle, and relates to the technical field of automatic driving. The method for controlling a vehicle includes: obtaining current state information of the vehicle, wherein the state information includes a position information and an attitude information; determining a preview tracking point from a plurality of path points of a target path to be tracked by the vehicle based on a reference information, wherein the reference information includes a preview time; determining a first turning angle and a second turning angle of a front wheel of the vehicle based on the position information and the attitude information, wherein the first turning angle is used for eliminating a distance error between the vehicle and the preview tracking point, and the second turning angle is used for eliminating a heading error between the vehicle and the preview tracking point; and performing a weighting calculation on the first turning angle and the second turning angle to determine a target turning angle for controlling the front wheel, wherein a minimum distance among a plurality of distances between the vehicle and the plurality of path points is a first distance, and at least one parameter of the preview time or a weight corresponding to the first turning angle is positively correlated with the first distance in a case where the first distance is within a preset distance range.

Classes IPC  ?

• B60W 60/00 - Systèmes d’aide à la conduite spécialement adaptés aux véhicules routiers autonomes
• B60W 40/10 - Calcul ou estimation des paramètres de fonctionnement pour les systèmes d'aide à la conduite de véhicules routiers qui ne sont pas liés à la commande d'un sous-ensemble particulier liés au mouvement du véhicule
• B62D 6/00 - Dispositions pour la commande automatique de la direction en fonction des conditions de conduite, qui sont détectées et pour lesquelles une réaction est appliquée, p.ex. circuits de commande

Abrégé

The present disclosure belongs to the technical field of engineering machinery and relates to an engineering machinery equipment modeling method and apparatus. The engineering machinery equipment modeling method comprises the following steps: in response to a modeling request of a user, determining a subsystem that matches the user from a plurality of subsystems of the engineering machinery equipment; displaying to the user a modeling page of the subsystem that matches the user; constructing a model of the subsystem of the engineering machinery equipment on the modeling page on the basis of a model library which can be used by the user; and adding the subsystem model of the engineering machinery equipment into the model library. Modeling efficiency of engineering machinery equipment can be improved by means of the present method.

Classes IPC  ?

• G06F 30/17 - Conception mécanique paramétrique ou variationnelle

Abrégé

The present disclosure relates to a backhoe loader for efficient digging. The backhoe loader includes: a vehicle body, including a first vehicle body and a second vehicle body which are connected sequentially; a loading device, arranged on the first vehicle body; a control platform, arranged on the second vehicle body and configured to rotate by 360° relative to the second vehicle body; a cab, arranged on a first side of the control platform; and an excavating device, arranged on a second side of the control platform opposite to the first side, the excavating device being configured to rotate by 180° relative to the cab. The backhoe loader can realize functions of 360° excavating and bidirectional driving. When the excavating device works, the backhoe loader can be directly moved by folding stabilizers and without changing the position of a seat back and forth, so that the excavating efficiency is improved.

Classes IPC  ?

• E02F 9/08 - Superstructures; Supports de superstructures
• E02F 9/12 - Transmission à pivotement ou à translation
• E02F 9/16 - Cabines, plates-formes ou similaires pour le conducteur

Abrégé

An aerial work platform for a fire fighting vehicle includes: a carrying component; a work platform body mounted on the carrying component and swingable relative to the carrying component to adjust the levelness of the work platform body; a hydraulic actuating element connected to the carrying component and the work platform body, respectively, and configured to drive the work platform body to swing relative to the carrying component; and a hydraulic power unit including a hydraulic pump and a first reversing valve fluidly connected to the hydraulic pump, the first reversing valve being fluidly connected to the hydraulic actuating element, the hydraulic power unit including a first component, the first component being formed with a first pump cavity accommodating a pumping component of the hydraulic pump and a first reversing valve cavity accommodating a valve core of the first reversing valve.

Classes IPC  ?

• B66F 11/04 - Dispositifs de levage spécialement adaptés à des buts particuliers, non prévus ailleurs pour plates-formes ou cabines mobiles, p.ex. sur des véhicules, permettant à des ouvriers d'occuper toute position convenable pour exécuter les travaux demandés
• A62C 27/00 - Engins de lutte contre l'incendie montés sur roues ou véhicules terrestres de lutte contre l'incendie

Abrégé

A meshing structure for plate welding, and a tack-free welding device and method are provided. The device comprises a connecting frame, a welding gun, and a cutting mechanism, the welding gun is fixed on the connecting frame, and the cutting mechanism is connected to the connecting frame. The meshing structures are disposed on welded plates, and after being assembled, the two plates can be restrained by the meshing structures in multiple dimensions. Before welding, edges of the plates are cut according to the form of the meshing structures, then the plates are assembled and meshed; after the position of the welding gun is adjusted, the cutting mechanism and the welding gun are driven by a welding robot or a special welding machine to move along a weld; and the meshing structures are removed by the cutting mechanism, and then normal welding is performed by the welding gun.

Classes IPC  ?

• B23K 37/00 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe
• B23K 26/38 - Enlèvement de matière par perçage ou découpage
• B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage

Abrégé

The present invention relates to a hydraulic cylinder guide ring, which comprises a ring body having a first material, wherein the ring body has a working surface, the working surface is provided with a roll-ball groove thereon, and a roll ball having a second material is mounted inside the roll-ball groove. The first material has the following properties: the tensile strength is 100-120 MPa, the 150°C compression strength is 70-85 MPa, the hardness is 80-86 HRM, the friction coefficient is 0.15-0.2, and the load deformation temperature is 220-240°C; and the second material has the following properties: the tensile strength is 130-150 MPa; the 150°C compression strength is 100-110 MPa; the hardness is 90-100 HRM; the friction coefficient is 0.1-0.14; and the load deformation temperature is 250-270°C.

Classes IPC  ?

• F15B 15/14 - Dispositifs actionnés par fluides pour déplacer un organe d'une position à une autre; Transmission associée à ces dispositifs caractérisés par la structure de l'ensemble moteur le moteur étant du type à cylindre droit
• F15B 15/20 - Autres parties constitutives

Abrégé

An energy recovery and reuse system for a loader-digger and a control method therefor, and a loader-digger. The system comprises: an actuation mechanism (2), which is configured to drive a working device to perform actions using hydraulic oil as a medium and has a first chamber (21) and a second chamber (22); a reversing valve (1), which has a first working oil port (E) and a second working oil port (F), the first working oil port (E) being in communication with the first chamber (21), and the second working oil port (F) being in communication with the second chamber (22), and the reversing valve (1) being configured for the reversing of the actuation mechanism (2); a stabilizing valve group (3), which has a first oil port (A), a second oil port (B), a third oil port (C) and a fourth oil port (D), the first oil port (A) and the second oil port (B) being respectively in communication with the first chamber (21) and the second chamber (22), and the third oil port (C) being in communication with an oil tank (4); and an energy storage component (5), which is in communication with the fourth oil port (D) and configured to store hydraulic energy, wherein the first oil port (A) and the third oil port (C) have a first communication state in which hydraulic oil in the first chamber (21) can enter the oil tank (4); and the second oil port (B) and the fourth oil port (D) can be selectively connected or disconnected, and in the connected state, the second chamber (22) is in communication with the energy storage component (5).

Classes IPC  ?

• F15B 1/02 - Installations ou systèmes comprenant des accumulateurs
• F15B 11/16 - Systèmes de servomoteurs dépourvus d'asservissement avec plusieurs servomoteurs
• F15B 13/06 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec plusieurs servomoteurs
• F15B 21/02 - Systèmes de servomoteurs à commande programmée émanant d'une mémoire ou d'un dispositif à temps; Dispositifs de commande à cet effet
• F15B 21/14 - Moyens de récupération d'énergie
• E02F 9/22 - Entraînements hydrauliques ou pneumatiques
• E02F 3/36 - Dragues; Engins de terrassement entraînés mécaniquement avec des outils excavateurs montés sur un bras plongeur ou à godets, p.ex. plongeurs, godets - Eléments constitutifs

Abrégé

The present disclosure relates to a turntable assembly and an engineering mechanical apparatus. The turntable assembly for an engineering mechanical apparatus comprises: a turntable body (10); a first slewing mechanism (20), connected to the turntable body (10) and configured to drive the turntable body (10) to rotate relative to an undercarriage of the engineering mechanical apparatus; and a second slewing mechanism (30), connected to the turntable body (10) and configured to drive a upper carriage working device (40) of the engineering mechanical apparatus to rotate relative to the turntable body (10), wherein the rotation axis (21) of the first sewing mechanism (20) is not collinear with the rotation axis (35) of the second slewing mechanism (30), the second slewing mechanism (30) comprises a slewing body (31) for connecting to the upper carriage working device (40), and at least two hinge points arranged at intervals along the rotation axis (35) of the second slewing mechanism (30) are provided between the slewing body (31) and the turntable body (10).

Classes IPC  ?

• E02F 9/08 - Superstructures; Supports de superstructures

Abrégé

A pneumatic conveying system having adjustable fans in series/parallel and positive/negative pressure, and a control method therefor. The system comprises a power unit (1), a fan unit (2), a valve unit (3), a sensor unit (4), a pneumatic conveying unit (5), a pipeline arrangement net (6) and a control system (7), wherein the fan unit (2), the valve unit (3), the sensor unit (4) and the pneumatic conveying unit (5) are connected together in an ordered manner by means of the pipeline arrangement net (6), so as to form a whole.

Classes IPC  ?

• B65G 53/50 - Dispositifs pneumatiques
• B65G 53/46 - Vannes ou écluses, p.ex. roues rotatives
• B65G 53/24 - Systèmes d'aspiration de gaz
• B65G 53/52 - Adaptations des tuyaux ou des tubes
• B65G 43/08 - Dispositifs de commande actionnés par l'alimentation, le déplacement ou le déchargement des objets ou matériaux

Abrégé

The present invention relates to a hydraulic cylinder guide ring, comprising a ring body made of a first material, wherein the ring body is provided with a working face, a groove is formed in the working face, and the groove is filled with a second material; the compression strength of the first material is greater than that of the second material; and the coefficient of friction of the second material is less than that of the first material.

Classes IPC  ?

• F15B 15/20 - Autres parties constitutives
• B29D 22/04 - Objets sphériques, p.ex. balles

Abrégé

An automatic driving method, apparatus, and system, and a computer-readable storage medium, relating to the field of agricultural machinery automatic driving. The automatic driving method comprises acquiring a path line traveled in a current row by an agricultural machine and an image of an agricultural implement, connected to the agricultural machine, in an area having been operated on of the current row (S1); according to the image of the agricultural implement in the area having been operated on of the current row, determining the boundary of the agricultural implement in the area having been operated on of the current row (S2); according to the path line travelled in the current row by the agricultural machine and the boundary of the agricultural implement in the area having been operated on of the current row, determining the operating width of the agricultural implement (S3), the operating width of the agricultural implement comprising the operating width of the agricultural implement on at least one side among both sides of the traveled path line; and according to the operating width of the agricultural implement and an empty space between the current row and a next row, determining the distance between the traveling path line of the agricultural machine in the next row and the traveling path line of the agricultural machine in the current row (S4). The calibration precision of the operating width of the agricultural implement is improved, and reasonable crop spacing is ensured.

Classes IPC  ?

• G01C 21/34 - Recherche d'itinéraire; Guidage en matière d'itinéraire

Abrégé

Disclosed in the present invention is an oscillating laser welding equivalent heat source modeling method, comprising: constructing energy distribution cloud maps of an actual laser welding heat source under different oscillating trajectories, oscillating frequencies and oscillating amplitudes; extracting an energy distribution curve along the direction of the center position of the heat source, and acquiring spatial position information of multiple target points of interest; constructing an equivalent Gaussian heat source model for each target point of interest; and performing matching degree verification on the Gaussian heat source models and the actual laser welding heat source, and using the Gaussian heat source model that passes the verification as an equivalent heat source model of the actual laser welding heat source. The present invention further provides an oscillating laser welding simulation method, which comprises constructing an equivalent heat source model by using the modeling method, and performing welding simulation on the basis of the equivalent heat source model. The present invention can greatly shorten a heat source check period during oscillating laser welding simulation, and improve the simulation efficiency of the whole oscillating laser welding.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• B23K 26/24 - Soudage de joints continus

Abrégé

The present disclosure provides a modular excavator, including a plurality of assembly modules that are detachably connected, the plurality of assembly modules including: a frame turntable base module; a track beam assembly module connected to the frame turntable base module; a track module connected to the track beam assembly module; a slewing drive module connected to the frame turntable base module; a power assembly module connected to the frame turntable base module; a counterweight module connected to the power assembly module; a cab module connected to the frame turntable base module; a fuel tank module connected to the frame turntable base module; a boom assembly module connected to the frame turntable base module; a bucket arm assembly module connected to the boom assembly module; and a work tool module connected to the bucket arm assembly module.

Classes IPC  ?

• E02F 3/32 - Dragues; Engins de terrassement entraînés mécaniquement avec des outils excavateurs montés sur un bras plongeur ou à godets, p.ex. plongeurs, godets et bras plongeur pivotant sur une poutre en porte à faux travaillant vers le bas et vers la machine, p.ex. avec retro-pelletage
• E02F 3/36 - Dragues; Engins de terrassement entraînés mécaniquement avec des outils excavateurs montés sur un bras plongeur ou à godets, p.ex. plongeurs, godets - Eléments constitutifs
• E02F 9/02 - Mécanisme de déplacement
• E02F 9/08 - Superstructures; Supports de superstructures
• E02F 9/12 - Transmission à pivotement ou à translation
• E02F 9/16 - Cabines, plates-formes ou similaires pour le conducteur
• E02F 9/18 - Contrepoids

Abrégé

A hub directly driven by a motor and used for a heavy-duty chassis dynamometer includes a hub body, wherein a mounting surface is arranged on an inner circumference of the hub body and is disposed around a transmission shaft coaxial with the hub body, the transmission shaft is sleeved with a driving assembly, and bearing assemblies are disposed on two sides of the driving assembly in an axial direction respectively; a plurality of axial mounting plates are disposed on an outer circumference of the driving assembly, and tension sensor assemblies are connected to the axial mounting plates located outside the hub body and are mounted on the support frame; and an end, away from the mounting surface, of the transmission shaft, is sleeved with an end flange plate, and a plurality of brake assemblies are disposed on the end flange plate and are mounted on the support frame.

Classes IPC  ?

• G01L 3/16 - Dynamomètres d'absorption rotatifs, p.ex. du type frein

Abrégé

A heavy-duty, high-power and large-torque chassis dynamometer for a multi-environmental system, comprising a power testing platform disposed on the ground and a rack located below the power testing platform. A fixed base and a sliding base are sequentially disposed on an inner side of the rack in a length direction of the power testing platform, a pair of first hub assemblies are mounted on the fixed base through a plurality of support frames, a sliding platform is disposed on the sliding base, and a pair of second hub assemblies are mounted on the sliding platform through a plurality of support frames. Tension sensor assemblies are connected to outer circumferences of the first hub assemblies and outer circumferences of the second hub assemblies, and are fixedly disposed on the support frames.

Classes IPC  ?

• G01L 5/13 - 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 puissance de traction ou propulsive des véhicules

Abrégé

An autonomous vehicle control method and apparatus (100, 700), and an operation system (800). The autonomous vehicle control method comprises: acquiring an alternative safe travel destination of a first autonomous vehicle; when it is determined that, during traveling on the basis of the alternative safe travel destination, the first autonomous vehicle does not conflict with another autonomous vehicle, determining the alternative safe travel destination to be a new safe travel destination; and issuing the new safe travel destination to the first autonomous vehicle, so as to instruct the first autonomous vehicle to move to the new safe travel destination. The method is suitable for a cooperative operation of multiple autonomous vehicles in a working area, and guarantees that the autonomous vehicles travel in order in the working area, thereby guaranteeing the operation efficiency in the working area when no safety accidents may occur.

Classes IPC  ?

• G05D 1/02 - Commande de la position ou du cap par référence à un système à deux dimensions

Abrégé

A fire-extinguishing robot, a fire-extinguishing robot group and a fire-extinguishing method, which relate to the field of fire-fighting apparatuses, and are configured to improve the structure and performance of the fire-extinguishing robot. The fire-extinguishing robot comprises a travelling mechanism (1), a frame (2) and a water-receiving portion (3), wherein the travelling mechanism is configured to travel; the frame is mounted on the travelling mechanism; the water-receiving portion is mounted on the periphery of the frame and encircles the periphery of the frame; the water-receiving portion comprises a cavity (30) for accommodating a fire-extinguishing agent; and the cavity is open. It is not necessary for the fire-extinguishing robot to receive the externally conveyed fire-extinguishing agent by means of a water hose, but the fire-extinguishing robot is provided with the water-receiving portion, which is open and can receive the fire-extinguishing agent aerially sprayed down, and the fire-extinguishing robot sprays, by means of a fire monitor (10) thereof, out the fire-extinguishing agent received by the water-receiving portion thereof, so as to extinguish fire or provide the fire-extinguishing agent to a downstream fire-extinguishing robot. The fire-extinguishing robot has a compact structure and a small load, and can achieve remote spraying fire-extinguishing at any distance.

Classes IPC  ?

• A62C 27/00 - Engins de lutte contre l'incendie montés sur roues ou véhicules terrestres de lutte contre l'incendie

Abrégé

A loader-excavator control method and a loader-excavator, relating to the field of engineering machinery. The loader-excavator control method comprises the following steps: setting power upper limit thresholds P0 of a variable displacement pump (2) of a loader-excavator according to working modes of the loader-excavator, wherein the loader-excavator comprises an engine (1), the variable displacement pump (2), a traveling system (3), a loading operation system (4), and an excavation operation system (5), and the working modes comprise a traveling mode, a loading operation mode, and an excavation operation mode; and adjusting the power upper limit threshold P0 of the variable displacement pump (2) according to the actual load of the loader-excavator in the current working mode. The power upper limit thresholds P0 set in different working modes are different; and the real-time, stepless and continuous adjustment of power of the variable displacement pump (2) is implemented according to the actual load condition of the system, so that output power of the engine (1) is utilized to the maximum extent, thereby improving the working efficiency, improving the energy efficiency, and reducing the energy consumption.

Classes IPC  ?

• E02F 9/22 - Entraînements hydrauliques ou pneumatiques

Abrégé

A method, device and system for updating a map of an unloading area (UA) of an open pit mine, which relate to the technical field of open pit mines. The method includes: acquiring one or more coordinates of one or more first preset positions of auxiliary operation equipment (11) during an operation (302), wherein the auxiliary operation equipment (11) trims a retaining wall (L) that acts as a physical boundary of the unloading area (UA) during the operation, and during the operation of the auxiliary operation equipment (11), each first preset position is located within the unloading area (UA); determining a first coordinate set (304), the first coordinate set (304) including coordinates among the one or more coordinates located outside of a first map of the unloading area (UA); and according to the first coordinate set (304), updating the first map into a second map (306).

Classes IPC  ?

• G01C 21/00 - Navigation; Instruments de navigation non prévus dans les groupes

Abrégé

A vehicle control method and apparatus, and a vehicle, a computer-readable storage medium and a program product, which relate to the technical field of autonomous driving. The method comprises: acquiring the current state information of a vehicle, wherein the state information comprises position information and pose information; according to reference information, determining a preview tracking point from among a plurality of path points of a target path to be tracked by the vehicle, wherein the reference information comprises a preview time; determining a first rotation angle and a second rotation angle of a front wheel of the vehicle according to the position information and the pose information, wherein the first rotation angle is used for eliminating a distance error between the vehicle and the preview tracking point, and the second rotation angle is used for eliminating a heading error between the vehicle and the preview tracking point; and performing weighted calculation on the first rotation angle and the second rotation angle, so as to determine a target rotation angle used for controlling the front wheel, wherein the shortest distance among a plurality of distances between the vehicle and the plurality of path points is a first distance, and when the first distance is within a preset distance range, at least one parameter of the preview time and a weight corresponding to the first rotation angle is positively correlated with the first distance.

Classes IPC  ?

• B60W 60/00 - Systèmes d’aide à la conduite spécialement adaptés aux véhicules routiers autonomes

Abrégé

A pneumatic conveying system and an optimal configuration method. The pneumatic conveying system conveys materials through a pressure-conveying type elephant trunk conveying pipeline (7) or a suction-conveying type elephant trunk conveying pipeline (18), wherein the pressure-conveying type elephant trunk conveying pipeline is a pipeline having a gradually enlarged inner diameter, and the suction-conveying type elephant trunk conveying pipeline is a pipeline having a gradually reduced inner diameter, such that a conveying distance can be prolonged under the condition that power and a fan system are unchanged, or the requirements for power and for fan system performance can be reduced and internal friction in the system can be reduced under the condition that the conveying distance is unchanged.

Classes IPC  ?

• B65G 53/58 - Dispositifs pour accélérer ou ralentir l'écoulement des matériaux; Utilisation de générateurs de pression

Abrégé

The present disclosure relates to an engineering vehicle driving system, a driving method, and an engineering vehicle. The engineering vehicle driving system comprises front wheels, rear wheels, a driving device, a first drive axle, a second drive axle, a first pressure measurement device, a first calculation device, a speed acquisition device and a driving distribution device, wherein the first drive axle is connected between the driving device and the front wheels; the second drive axle is connected between the driving device and the rear wheels; the first pressure measurement device measures pressure loads of the first drive axle and the second drive axle; the first calculation device calculates the difference between the speeds of the front wheels and the rear wheels; the speed acquisition device acquires the traveling speed of an engineering vehicle; the driving distribution device is in signal connection with the first pressure measurement device, the first calculation device and the speed acquisition device; and the driving distribution device adjusts a driving mode of the engineering vehicle driving system according to the pressure loads of the first drive axle and the second drive axle, the difference between the speeds of the front wheels and the rear wheels, and the traveling speed.

Classes IPC  ?

• B60K 17/34 - Agencement ou montage des transmissions sur les véhicules pour entraînement simultané des roues avant et arrière, p.ex. véhicules à quatre roues motrices
• B60K 17/354 - Agencement ou montage des transmissions sur les véhicules pour entraînement simultané des roues avant et arrière, p.ex. véhicules à quatre roues motrices comportant des ensembles mécaniques séparés pour transmettre l'entraînement aux roues ou trains de roues avant ou arrière
• B60W 30/182 - Sélection entre plusieurs modes opératoires, p.ex. confort ou sportif
• B60C 23/04 - Dispositifs avertisseurs actionnés par la pression du pneumatique montés sur la roue ou le pneumatique

Abrégé

Disclosed are an optimization design method for a ROPS frame top beam, and a construction machine cab. The design method comprises: by means of analyzing the bending moment stress value of a mechanical model of a portal-type statically indeterminate structure, obtaining a ratio of a moment of inertia I between a top beam and a column when the maximum bending moment stresses of the top beam and the column are equal, i.e., an optimum ratio relationship of a cross-sectional moment of inertia of the top beam and the column, so as to realize lightweight design of a ROPS frame.

Classes IPC  ?

• B62D 33/06 - Cabines de conducteur
• E02F 9/16 - Cabines, plates-formes ou similaires pour le conducteur
• G06F 30/15 - Conception de véhicules, d’aéronefs ou d’embarcations
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• B60R 21/13 - Arceaux de sécurité

Abrégé

Disclosed in the present invention are an optimization design method for a middle cross beam of a ROPS framework, and an engineering machinery cab. The design method comprises: by analyzing the influence of the height dimension of a middle cross beam in a portal statically indeterminate structure mechanical model on a distribution relationship between two bending moments of a column, calculating the height dimension of the middle cross beam when the maximum bending moment of the column is minimum, and obtaining an optimal height dimension relational expression of the middle cross beam; and by analyzing a design objective that the middle cross beam and the column simultaneously enter a plastic deformation region, obtaining a profile cross section parameter design relational expression of the middle cross beam, and using the relational expression to guide the structure and profile type selection of the ROPS framework, so as to improve the design quality of the ROPS framework.

Classes IPC  ?

• G06F 30/15 - Conception de véhicules, d’aéronefs ou d’embarcations
• G06F 30/17 - Conception mécanique paramétrique ou variationnelle
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• G06F 119/14 - Analyse des forces ou optimisation des forces, p.ex. forces statiques ou dynamiques

Abrégé

maxmaxmaxmaxmax, calculating the sum of section modulus of the profiles of all upright columns and top cross beams, selecting proper profiles according to the sum, and building a closed space frame structure by using the selected cab framework structure type.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• B62D 33/06 - Cabines de conducteur
• E02F 9/16 - Cabines, plates-formes ou similaires pour le conducteur
• G06F 119/14 - Analyse des forces ou optimisation des forces, p.ex. forces statiques ou dynamiques
• G06F 30/17 - Conception mécanique paramétrique ou variationnelle

Abrégé

A design method for a control box of construction machinery. The method comprises: determining mounting positions of at least two handles (12) on a box body (101) of a control box (10); and designing the control box on the basis of the determined mounting positions of the at least two handles on the box body of the control box, so that the control box satisfies the requirement of the at least two handles for mounting. On this basis, the universality and later expandability of the control box can be improved, and the production costs can be reduced. The present application further relates to a control box obtained by means of the design method for a control box of a construction machinery, and construction machinery.

Classes IPC  ?

• F16H 59/08 - Appareils de sélection de la gamme

Abrégé

A device for detecting the elongation of a hydraulic cylinder includes an electric signal conversion device, a ruler and a positional magnetic ring. The electric signal conversion device is disposed at the bottom of a cylinder barrel. The ruler has an end fixedly connected to the electric signal conversion device, as well as the other end movably extending into a piston rod. The positional magnetic ring is fixedly connected to a piston and the positional magnetic is movably disposed around the periphery of the ruler. When the positional magnetic ring is located at different positions of the ruler, different circuits are turned on to transmit a voltage or current signal corresponding to the positions of the ruler to the electric signal conversion device, so as to obtain a position of the positional magnetic ring on the ruler, such that the elongation of the piston rod is obtained.

Classes IPC  ?

• F15B 15/28 - Moyens pour indiquer la position, p.ex. fin de course

Abrégé

The present disclosure provides a method for obtaining a milling particle gradation prediction model, a prediction method and a device. The method includes: sieving a plurality of groups of test particles obtained by a plurality of milling tests to obtain a sieve residual mass ratio corresponding to each of a plurality of sieves after performing milling tests on an asphalt layer; calculating a characteristic parameter of a cutting graph of the milling rotor according to arrangement of cutter teeth of the milling rotor, a rotational speed, a forward speed, and a milling depth of the milling rotor; establishing, by regression analysis, a functional relation between the sieve residual mass ratio corresponding to each sieve and the characteristic parameter according to the rotational speed, the forward speed and the milling depth; and normalizing the functional relation to obtain the milling particle gradation prediction model.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• E01C 23/06 - Dispositifs ou aménagements pour travailler la surface terminée; Dispositifs pour réparer la surface des revêtements endommagés

Abrégé

A device, optimization method and system for cooperative matching of heat dissipation and noise are disclosed. A hood is mounted on a base, and a power device, a fan and a radiator are mounted in the hood; an output shaft of the power device is fixedly connected to a rotary shaft of the fan through a bearing pedestal to drive the fan to rotate, and the bearing pedestal is fixed on the base; the radiator is fixed on a radiator support, and a lead screw assembly is disposed on the base, and is used for changing the relative distance between the radiator and the fan; and a fan cover is mounted on a side, facing the fan, of the radiator, and a plurality of anemographs are disposed on the other side of the radiator, and a plurality of microphones are symmetrically disposed on two sides of the fan.

Classes IPC  ?

• F04D 27/00 - Commande, p.ex. régulation, des pompes, des installations ou des systèmes de pompage spécialement adaptés aux fluides compressibles

Abrégé

A cutter holder measuring tool includes: a base with a positioning point configured to be detected by a detecting device; and a mounting assembly, including a sleeve, a positioning pin and an end plate, wherein two axial ends of the sleeve are connected to the base and the end plate respectively, the end plate is configured to abut against a mounting surface of a cutter holder of a milling rotor, the mounting surface is a surface, facing a tip of a cutter, of the cutter holder, the positioning pin is inserted into the sleeve and a mounting hole, for the cutter to insert, of the cutter holder, the positioning pin is movable along an axial direction of the sleeve, and a diameter of the positioning pin changes along the axial direction of the sleeve, so a center of the positioning pin is collinear with a center of the mounting hole.

Classes IPC  ?

• B23Q 17/22 - Agencements sur les machines-outils pour indiquer ou mesurer pour indiquer ou mesurer la position réelle ou désirée de l'outil ou de la pièce
• B23Q 17/00 - Agencements sur les machines-outils pour indiquer ou mesurer
• B23Q 17/24 - Agencements sur les machines-outils pour indiquer ou mesurer utilisant des moyens optiques

Abrégé

A tractor rear suspension vibration damping control system, relating to the technical field of tractor rear suspension vibration control. The system comprises: a tractor operation parameter acquisition device for acquiring an operation parameter of a tractor; a controller (11) for sending a control signal to an execution mechanism according to the acquired operation parameter of the tractor and a set vibration damping control policy; the execution mechanism for controlling, according to the control signal sent by the controller (11), the amount of a hydraulic fluid flowing into or out from a rodless cavity of a suspension cylinder (8) of a tractor rear suspension mechanism, so that the tractor rear suspension mechanism performs vibration damping during a transfer process and is kept in a set damping range, thereby effectively controlling the vibration of a tractor rear suspension, improving the driving comfort of an operator, and avoiding a safety problem caused by overlarge vibration. The present invention also relates to a tractor.

Classes IPC  ?

• A01B 63/114 - Réglage de la profondeur de travail des instruments pour obtenir une profondeur de travail constante
• A01B 59/041 - Dispositifs particuliers pour l'attelage des animaux ou des tracteurs aux machines ou instruments agricoles pour machines tirées ou poussées par tracteurs avec prévention ou limitation du jeu latéral des instruments
• F16F 9/19 - Dispositifs à un ou plusieurs organes, p.ex. des pistons, des aubes, se déplaçant en va-et-vient dans des chambres et utilisant un effet d'étranglement comportant uniquement un déplacement rectiligne des parties travaillant avec un cylindre fermé et un piston déterminant, à l’intérieur de ce cylindre, plusieurs espaces de travail avec un seul cylindre
• F16F 9/512 - Moyens réagissant à l'action de la charge sur l'amortisseur ou à la pression de fluide dans l'amortisseur
• F16F 15/023 - Suppression des vibrations dans les systèmes non rotatifs, p.ex. dans des systèmes alternatifs; Suppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif utilisant des moyens fluides

Abrégé

The present disclosure relates to a travel stability system, a backhoe loader and a control method. The travel stability system includes: a hydraulic actuator; a first hydraulic oil source, operatively connected with the hydraulic actuator, and configured to provide pressure oil to the hydraulic actuator; an energy storage element operatively connected with a first oil supply path between the first hydraulic oil source and the hydraulic actuator; and a controller configured to compare an oil pressure of the hydraulic actuator with an oil pressure of the energy storage element after the travel stability system is turned on, and achieve a balance between the oil pressure of the energy storage element and the oil pressure of the hydraulic actuator before the energy storage element is accessed to the first oil supply path.

Classes IPC  ?

• E02F 9/22 - Entraînements hydrauliques ou pneumatiques

Abrégé

The present disclosure relates to an emergency rescue vehicle and a mounting method thereof. The emergency rescue vehicle comprises a chassis (100) and an upper vehicle (200) which are relatively independent and can be connected to each other. The chassis (100) comprises a rotary base module (M1), a left hinge body module (M2), a right hinge body module (M3), a central rotary body module (M4), a rotary bearing module (M5), a left front leg module (M6), a right front leg module (M7), a left rear leg module (M8), a right rear leg module (M9), a left rear wheel module (M10), a right rear wheel module (M11) and a chassis oil cylinder module (M12) which are relatively independent and can be connected according to a preset sequence, wherein the left front leg module (M6) comprises a left front leg (M6-1) and a left front wheel (M6-2), and the right front leg module (M7) comprises a right front leg (M7-1) and a right front wheel (M7-2). According to the present disclosure, the chassis is divided into 12 independent small modules, so that water, land and air multi-way convenient transportation can be met, quick and flexible delivery of an emergency rescue vehicle is realized, and assembly and disassembly are convenient.

Classes IPC  ?

• E02F 9/08 - Superstructures; Supports de superstructures
• E02F 9/12 - Transmission à pivotement ou à translation
• E02F 9/02 - Mécanisme de déplacement
• E02F 9/20 - Entraînements; Dispositifs de commande
• E02F 3/32 - Dragues; Engins de terrassement entraînés mécaniquement avec des outils excavateurs montés sur un bras plongeur ou à godets, p.ex. plongeurs, godets et bras plongeur pivotant sur une poutre en porte à faux travaillant vers le bas et vers la machine, p.ex. avec retro-pelletage
• E02F 3/38 - Poutres en porte-à-faux; Bras plongeurs; Bras à auges
• E02F 3/42 - Entraînements pour plongeurs, auges, bras-plongeurs ou bras à godets

Abrégé

A bucket coordinate calibration method and apparatus, an updating method and device, and an excavator. The bucket coordinate calibration method comprises: acquiring angle sensor data and radar point cloud data of a bucket (step 21); determining the coordinates of bucket teeth in the bucket under the coordinate system of the radar and according to the radar point cloud data of the bucket (step 22); determining the coordinates of the bucket teeth in the bucket under the coordinate system of the excavator and according to the angle sensor data of the bucket (step 23); and determining a coordinate calibration matrix according to the coordinates of the bucket teeth in the bucket under the radar coordinate system and under the excavator coordinate system (step 24), wherein the coordinate calibration matrix is a calibration matrix that calibrates the coordinates of the bucket teeth in the bucket under the radar coordinate system to coordinates in the excavator coordinate system. The present method can utilize a laser radar and an excavator angle sensor, and bucket coordinates are calibrated without adding external calibration equipment.

Classes IPC  ?

• G01B 11/00 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques
• G01S 17/06 - Systèmes déterminant les données relatives à la position d'une cible

Abrégé

The present application provides a medium-carbon low-alloy steel material, a conveying pipe, a preparation method for the medium-carbon low-alloy steel material, and a concrete pump truck. The medium-carbon low-alloy steel material is made up of the following chemical components in percentage by mass: C: 0.55-0.60 %, Mn: 0.80-1.40 %, Si: ≤ 0.3 %, Cr: 0.2-0.4 %, Ni: 0.2-0.4 %, P: ≤ 0.020 %, S: ≤ 0.020 %, Ti: 0.04-0.10 %, V: 0.05-0.15 %, Re: 0.001-0.003 %, and the balance being Fe. On the basis of controlling the contents of principal chemical components C, Mn, Si, Cr, and Ni, and by means of utilizing micro-alloying elements Ti, V, and Re and controlling the amounts of each used, the goal of improving the toughness and wear resistance of the material is improved, and consequently the impact resistance of a conveying pipe formed from said material is improved, and wear and tear on the pipe is mitigated.

Classes IPC  ?

• C22C 38/02 - Alliages ferreux, p.ex. aciers alliés contenant du silicium 
• C22C 38/04 - Alliages ferreux, p.ex. aciers alliés contenant du manganèse
• C22C 38/50 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du titane ou du zirconium
• C22C 38/46 - Alliages ferreux, p.ex. aciers alliés contenant du chrome et du nickel et du vanadium
• C21D 9/14 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour corps tubulaires ou tuyaux tuyaux résistant à l'usure ou à la pression
• C21D 1/18 - Durcissement; Trempe avec ou sans revenu ultérieur
• C21D 6/00 - Traitement thermique des alliages ferreux
• B23P 15/00 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe
• E04G 21/04 - Dispositifs pour transporter et distribuer en même temps
• F16L 9/02 - Tuyaux rigides en métal

Abrégé

The present disclosure belongs to the technical field of engineering machinery and relates to an engineering machinery equipment modeling method and apparatus. The engineering machinery equipment modeling method comprises the following steps: in response to a modeling request of a user, determining a subsystem that matches the user from a plurality of subsystems of the engineering machinery equipment; displaying to the user a modeling page of the subsystem that matches the user; constructing a model of the subsystem of the engineering machinery equipment on the modeling page on the basis of a model library which can be used by the user; and adding the subsystem model of the engineering machinery equipment into the model library. Modeling efficiency of engineering machinery equipment can be improved by means of the present method.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• G06Q 30/06 - Transactions d’achat, de vente ou de crédit-bail

Abrégé

A windscreen vision zone division device and method. The device comprises a guide rail (1), a sliding block base (2), a translation mechanism, a lifting mechanism and a horizontal angle meter (3). The sliding block base (2) is in sliding connection to the guide rail (1), and a laser emission assembly is provided on the sliding block base (2). A laser emission seat (4) is provided with a guide rod (6); and a laser range finder (7), which is used for measuring the distance between a laser emitter (5) and a cab floor, is slidably connected to the guide rod (6). The present invention is suitable for vision zone division of various vehicle windscreens, can avoid error influence caused by human operation, has higher precision and simple operation, may improve division efficiency and is suitable for vision zone division of a cab having a plurality pieces of windscreen glass.

Classes IPC  ?

• G01M 17/007 - Véhicules à roues ou à chenilles

Abrégé

The present disclosure relates to an electroosmosis adhesion reduction system positive electrode module, an electroosmosis adhesion reduction system and an engineering machinery, relating to the field of engineering machinery, and used for reducing adhesion of materials. The electroosmosis adhesion reduction system positive electrode module comprises an insulating part, a positive electrode and a conduction part. The insulating part comprises a through hole; the positive electrode is mounted in the through hole, and one end of the positive electrode extends out of the through hole; the conduction part is electrically connected to the other end of the positive electrode; and at least part of the conduction part is located on the outer side of the through hole. The positive electrode module provided in the described technical solution is matched with an existing conductive cover body of a device to form an electrical loop, so as to form a water on the surface of the cover body prone to medium adhesion, thereby reducing the possibility of the medium adhering to the cover body. Moreover, the electroosmosis adhesion reduction system positive electrode module is automatically completed in the working process of the device, there is no need for separately arranging a step and process of removing an adhered object, and the working efficiency of the device is greatly improved.

Classes IPC  ?

• E01C 23/088 - Outils rotatifs, p.ex. tambours de fraisage
• H01R 11/11 - Pièces d'extrémité ou pièces de dérivation pour fils ou câbles, supportées par le fil ou le câble et munies de moyens pour faciliter la connexion électrique avec quelque autre fil, borne ou organe conducteur

Abrégé

A modular design gearbox and a gear implementation method are provided. The gearbox includes a body, a drive shaft, four intermediate shafts, and an output shaft. The gearbox is of a six-shaft layout. The drive shaft S1, the intermediate shaft S4 and the intermediate shaft S5 are each provided with two clutch packs, and the intermediate shaft S2 is provided with one clutch pack. According to such a structure, a transmission path is short, and stability is better. By means of six shafts and seven clutches, the gearbox achieves a mode of up to eight forward gears and four backward gears, a speed ratio range is wide, and the gearbox can be adjusted flexibly, a less-gear mode can be achieved by reducing some of components, modularization is achieved, universality is improved, and the production cost and use cost of the gearbox are reduced.

Classes IPC  ?

• F16H 3/093 - Transmissions à engrenages pour transmettre un mouvement rotatif à rapport de vitesse variable ou pour inverser le mouvement rotatif sans engrenages à mouvement orbital exclusivement ou principalement à engrenages constamment en prise, pouvant être libérés de leurs arbres caractérisés par l'agencement des engrenages avec plusieurs arbres de renvoi
• F16H 3/00 - Transmissions à engrenages pour transmettre un mouvement rotatif à rapport de vitesse variable ou pour inverser le mouvement rotatif

Abrégé

The present disclosure discloses a rotary frame and a grader, and relates to the field of a grader. The rotary frame includes: a rotary ring, provided with a recessed portion and an opening; a first connecting piece fixed at the periphery of the rotary ring, one end of the first connecting piece being attached to the periphery of the rotary ring and the other end of the first connecting piece being separated from the periphery of the rotary ring; a second connecting piece, the second connecting piece being also fixed at the periphery of the rotary ring, and one end of the second connecting piece being attached to the periphery of the rotary ring and the other end of the second connecting piece being separated from the periphery of the rotary ring; a supporting base fixed on an inner wall of the rotary ring and located in the recessed portion.

Classes IPC  ?

• E02F 3/80 - Niveleuses, bulldozers ou machines analogues avec lame racleuse ou éléments en soc de charrue ou éléments analogues; Dispositifs de nivellement - Eléments constitutifs
• E02F 3/76 - Niveleuses, bulldozers ou machines analogues avec lame racleuse ou éléments en soc de charrue ou éléments analogues; Dispositifs de nivellement
• E02F 3/84 - Entraînement ou dispositifs de commande correspondants

Abrégé

The present application relates to an aluminum alloy, comprising the following elements in percentage by mass: Cu: 4.4-4.7, Li: 2.5-2.6, Mg: 0.8-1.0, Zn: 0.8-1.0, Zr: 0.2-0.25, Sc: 0.8-0.15, and the remaining is Al and inevitable impurities. The aluminum alloy is low in density, good in comprehensive mechanical property, good in forming and processing performance and high in weldability. At the same intensity level, the aluminum alloy can be used for replacing steel on a concrete pump truck boom.

Classes IPC  ?

• C22C 21/18 - Alliages à base d'aluminium avec le cuivre comme second constituant majeur avec du zinc
• C22F 1/057 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages d'alliages avec le cuivre comme second constituant majeur

Abrégé

The present disclosure relates to a method and system for measuring and calibrating steering parameters of a vehicle, a medium and an autonomous vehicle. The method includes: calculating a steering angle of a front wheel of the vehicle corresponding to each sampling moment at a plurality of consecutive sampling moments respectively. The calculation process at each sampling moment includes: calculating a first calculated value based on a yaw velocity of the vehicle, a vehicle velocity and a wheelbase; calculating a second calculated value based on a vehicle velocity, a lateral acceleration of the vehicle and the wheelbase; calculating a third calculated value based on a rotating angle of the steering wheel and a steering gear ratio; and calculating a steering angle of the front wheel at a current sampling moment based on the first, second and third calculated value of the steering angle of the front wheel.

Classes IPC  ?

• B62D 6/00 - Dispositions pour la commande automatique de la direction en fonction des conditions de conduite, qui sont détectées et pour lesquelles une réaction est appliquée, p.ex. circuits de commande
• B62D 15/02 - Indicateurs de direction ou aides de direction

Abrégé

Disclosed in the present invention are a method and a system for screening a plurality of simulation results of engineering machinery. The method comprises: acquiring a plurality of simulation results and evaluation indexes related to the simulation results; screening the evaluation indexes by using an Apriori algorithm, and constructing an evaluation index layer element set of an AHP algorithm; performing pairwise comparison judgment on the evaluation indexes in the evaluation index layer element set, and constructing an index evaluation matrix according to the AHP algorithm; after single sorting and consistency verification are performed on the index evaluation matrix, solving weight vectors of the index evaluation matrix, and then performing hierarchical total sorting on the solved weight vectors, so as to obtain weights of corresponding evaluation indexes; calculating, according to the weight, an evaluation score corresponding to each simulation result by adopting a fuzzy comprehensive evaluation method; and screening an optimal simulation result according to the evaluation score. The present invention has the beneficial effects that the method and a system for screening a plurality of simulation results of engineering machinery fusing the Apriori algorithm, the AHP algorithm and the fuzzy comprehensive evaluation method are provided.

Classes IPC  ?

• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu

Abrégé

The invention discloses a method and system for detecting a retaining wall suitable for an automatic driving vehicle. The method comprises: obtaining original data acquired during a backing process of a vehicle and used for detecting a retaining wall, and processing the original data to obtain finally processed data of the retaining wall; obtaining ground data during the backing process of the vehicle, and sequentially performing ground determination and ground elimination on the ground data to obtain non-ground point cloud data; and obtaining distance information between a rear end of the vehicle and the retaining wall and integrity data of the retaining wall by calculation according to the finally processed data of the retaining wall and the non-ground point cloud data.

Classes IPC  ?

• G01S 17/931 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour prévenir les collisions de véhicules terrestres
• G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques

Abrégé

This disclosure relates to a manufacture method of a bushing, a bushing and an excavator to alleviate the problems of insufficient lubricity and wear resistance of the bushing. The bushing includes an inner ring and an outer ring. The manufacture method of the bushing includes the following steps: grinding a first mixed powder containing Fe, Al, Ti, Cr and V, nitriding the ground first mixed powder to form a nitrogen-rich stable compound powder, and then carrying out molding by pressing and sintering the nitrogen-rich stable compound powder to form the outer ring; grinding a second mixed powder containing Fe and Mo, sulfurizing the ground second mixed powder to form a sulfurized powder containing FeS and MoS2, and carrying out molding by pressing the sulfurized powder to form the inner ring; and placing the inner ring in the outer ring and carrying out sintering to obtain the bushing.

Classes IPC  ?

• B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés
• B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
• B22F 3/16 - Compactage et frittage par des opérations successives ou répétées
• B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p.ex. par broyage, meulage ou écrasement à la meule
• B22F 9/16 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par un procédé chimique
• B22F 3/26 - Imprégnation
• F16C 33/14 - Procédés particuliers de fabrication; Rodage
• F16C 33/12 - Composition structurale; Emploi de matériaux spécifiés ou de traitement particulier des surfaces, p.ex. contre la rouille

Abrégé

Disclosed in the present invention are a method and system for detecting a retaining wall suitable for an automatic driving vehicle. The method comprises: acquiring original data collected during reverse travel of a vehicle and used for detecting a retaining wall, and processing the original data to obtain retaining wall final processing data; acquiring ground data during the reverse drive of the vehicle, and performing ground determination and ground removal processing on the ground data in sequence to obtain non-ground point cloud data; and obtaining distance information between the rear end of the vehicle and the retaining wall and integrity information of the retaining wall according to the retaining wall final processing data and the non-ground point cloud data. The present invention has the following advantages: the distance information between the vehicle and the retaining wall at the rear side is accurately detected, and at the same time the integrity information of the retaining wall at the rear side is perceived, thereby ensuring that the vehicle will not cross the region boundary while dumping a material to an unloading region; the distance between the vehicle and a small-scale ground obstacle on the rear side is accurately detected, thereby ensuring driving safety.

Classes IPC  ?

• G01S 17/931 - Systèmes lidar, spécialement adaptés pour des applications spécifiques pour prévenir les collisions de véhicules terrestres
• G01S 17/88 - Systèmes lidar, spécialement adaptés pour des applications spécifiques
• G01C 21/00 - Navigation; Instruments de navigation non prévus dans les groupes
• G05D 1/02 - Commande de la position ou du cap par référence à un système à deux dimensions

Abrégé

Disclosed in the present invention are a method and system for controlling a speed drop under a sudden load change of a positive flow system, and an excavator in the technical field of hydraulic control. The method for controlling a speed drop under a sudden load change of a positive flow system comprises: collecting an outlet pressure value of a main pump unit; and obtaining a load change rate according to the outlet pressure value; when the load change rate reaches a set value, outputting a feedforward compensation current which matches the current load change rate, wherein the feedforward compensation current is used for reducing the power of the main pump unit to a set power; and when a rotation speed change rate and a load-rate change rate of an engine meet a certain level in given speed drop severity levels, outputting a speed drop compensation current which matches the current rotation speed change rate and load-rate change rate, wherein the speed drop compensation current is used for increasing the power of the main pump unit to the set power. By means of the present invention, a speed drop value of an engine can be effectively reduced; the whole machine control comprises feedforward compensation and speed drop control, such that the stability of the rotation speed of the engine can be effectively improved; and an electric control constant rate is used and the rotation speed of the engine is stably controlled, such that the oil consumption of a system can be effectively reduced.

Classes IPC  ?

• E02F 9/22 - Entraînements hydrauliques ou pneumatiques
• E02F 3/04 - Dragues; Engins de terrassement entraînés mécaniquement

Abrégé

This disclosure provides an engineering vehicle and an air conditioning system thereof beneficial to improve comfortability of drivers. The air conditioning system includes: an air conditioner body, including a shell with first and second air outlet; a first air supply pipeline, a first end of the first air supply pipeline being connected to the first air outlet; first air support port(s), arranged at an inner front end of a cab of the engineering vehicle and connected to a second end of the first air supply pipeline; a second air supply pipeline, a first end of the second air supply pipeline being connected to the second air outlet; second air supply port(s), arranged at an inner rear end of the cab and connected to a second end of the second air supply pipeline; and a flow distribution device including a flow dividing portion located in the shell.

Classes IPC  ?

• B60H 1/00 - Dispositifs de chauffage, de refroidissement ou de ventilation
• E02F 9/08 - Superstructures; Supports de superstructures

Abrégé

A device control system construction method and apparatus. A control system comprises an application layer, a mapping layer, and a basic layer. The application layer is used for executing user control logic for a device; the basic layer is used for executing a device control instruction; and the mapping layer is used for forwarding the device control instruction, sent by the application layer on the basis of the user control logic, to the base layer. The method comprises: selecting several first modules from a plurality of preconstructed application control modules, and adding the first modules to the application layer; determining the basic layer corresponding to the several first modules; and setting an interface between the application layer and the mapping layer to generate the mapping layer. The method and apparatus not only improve the transportability, testability and maintainability of construction of an engineering machinery control system, but also improve the reusability of the construction of the control system.

Classes IPC  ?

• G06F 8/30 - Création ou génération de code source
• G06F 8/76 - Adaptation d’un code de programme pour fonctionner dans un environnement différent; Portage

Abrégé

A rotary frame includes a first connecting member of the rotary frame has an arc-shaped concave part. Each second connecting member is non-coplanar with the first connecting member and has a mounting hole. A first reinforcing member is connected between a first end of the first connecting member and one of the second connecting members; and another first reinforcing member is connected between a second end of the first connecting member and the other second connecting member. A second reinforcing member is connected between a middle part of a circumferential edge of the first connecting member and one of the second connecting members; and another second reinforcing member is connected between the middle part of the circumferential edge of the first connecting member and the other second connecting member. Middle regions of the first and second reinforcing members joined to the same second connecting member are separate from each other.

Classes IPC  ?

• E02F 3/76 - Niveleuses, bulldozers ou machines analogues avec lame racleuse ou éléments en soc de charrue ou éléments analogues; Dispositifs de nivellement
• E02F 3/84 - Entraînement ou dispositifs de commande correspondants

Abrégé

The present invention discloses a molten salt ultrasonic cleaning machine. The molten salt ultrasonic cleaning machine includes a tank body, a molten salt heating system, an ultrasonic application system and a stirring system, wherein the tank body is configured to accommodate molten salt and a to-be-cleaned workpiece; the tank body includes a bottom wall, and a side wall arranged circumferentially in a surrounding way; the molten salt heating system is configured to heat the molten salt in the tank body; the ultrasonic application system is configured to apply ultrasonic impact to the to-be-cleaned workpiece in the tank body; and the stirring system includes a stirring rod which is rotatably arranged in the tank body. When the molten salt ultrasonic cleaning machine provided by the present invention cleans a workpiece, the stirring rod rotates to improve the flowability of the molten salt. In combination with the ultrasonic impact, rapid removal of pollutants in the complex space of the workpiece and pollutants on the bottom layer of the surface is accelerated, so that the cleaning efficiency is improved. Moreover, the improvement of the molten salt flowability can promote complete reaction between the unreacted paint and residues which float on the surface of the liquid level, and the molten salt, so that the quantity of generated waste gas is reduced.

Classes IPC  ?

• B08B 3/10 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p.ex. par la chaleur, par l'électricité ou par des vibrations
• B08B 3/12 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p.ex. par la chaleur, par l'électricité ou par des vibrations par des vibrations soniques ou ultrasoniques

Abrégé

A water hose reel system for use in a drainage emergency vehicle comprises a water hose reel assembly (1), a hydraulic motor (2), a solenoid valve (3), a hydraulic pump (4), a controller (5), and a pressure sensor (6). The hydraulic pump (4) is used to provide power to the hydraulic motor (2), the pressure sensor (6) is used to measure an oil supply pressure of the hydraulic pump (4) and feed back the oil supply pressure to the controller (5), and the controller (5) determines a working state of the water hose reel assembly according to a pressure value, so as to adjust an open or closed state and a flow rate of the solenoid valve (3), and thereby adjust a rotation speed of the hydraulic motor (2). The invention also comprises a method for controlling a water hose reel system for use in a drainage emergency vehicle, and a drainage emergency vehicle. The apparatus and method can improve the operation efficiency and reduce the labor intensity of personnel.

Classes IPC  ?

• G01L 11/00 - Mesure de la pression permanente, ou quasi permanente d'un fluide ou d'un matériau solide fluent par des moyens non prévus dans les groupes ou
• B65H 54/40 - Dispositions pour faire tourner les paquets

Abrégé

A map editing apparatus and method suitable for an unmanned transportation system in an opencast mine, and an update system, which belong to the technical field of unmanned driving in opencast mines. The method comprises: performing fine-grain division on a working face area by means of a polygon clipping controller, or integrating and adjusting working face areas by means of a polygon merging controller; splitting, by means of a lane splitting controller, a lane to be edited; by means of a lane splicing controller, selecting two lanes to be edited for merging; splicing the two said lanes by means of the lane splicing controller; and extending one of said lanes by means of a lane extension controller. Compared with a traditional vector map, the method is suitable for a specific scene in an opencast mine. Semantic information is integrated for a relatively structured driving area and an unstructured working face area. An abundant editing method is provided, thereby facilitating the creation, maintenance and updating of a complex environment map of the opencast mine by a user.

Classes IPC  ?

• G01C 21/00 - Navigation; Instruments de navigation non prévus dans les groupes

Abrégé

Disclosed are an intelligent control system for a vertical lifting drainage vehicle, and a method. The control system comprises a transmitter, a wireless remote control receiver, a chassis controller and a working device controller; the transmitter is used to remotely configure the working mode of the working device controller by means of the wireless remote control receiver and to issue a working instruction by means of the wireless remote control receiver in different working modes; the wireless remote control receiver is used to control the chassis controller and the working device controller to perform corresponding actions according to the working instruction issued by the transmitter; the chassis controller is used to provide power to a drainage vehicle; and the working device controller is used to, according to the working instruction, adjust the position pose of the drainage vehicle and control the drainage vehicle to performing draining. In the present invention, multi-mode control is designed, the arrangement of operation buttons is reduced, manual operation adjustment is reduced and control accuracy is improved, so that a vertical lifting drainage vehicle can quickly enter a working state, thus improving the intelligent level of the vertical lifting drainage vehicle.

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques

Abrégé

A submersible pump and a drainage emergency vehicle. The submersible pump comprises a pump body (100) and a cutting assembly (2). The pump body (100) comprises a water intake section (1), an intermediate section (51) and a water output section (6), which are successively arranged in an axial direction. The cutting assembly (2) comprises a fixed cutter disc (21) and a movable cutter (22), wherein the fixed cutter disc (21) is fixedly connected to the water intake section (1) and comprises at least two fixed cutter blades (212) spaced apart from each other in a circumferential direction; and the movable cutter (22) is arranged on an inner side, in an axial direction, of the fixed cutter disc (21) and is rotatably arranged with respect to the pump body (100). In a flow area of the whole pump body, the number of cutters is increased, thereby improving the cutting efficiency, and effectively preventing a band-shaped object from being tangled with an impeller.

Classes IPC  ?

• F04D 13/04 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par un fluide
• F04D 29/70 - Grilles d'aspiration; Filtres; Séparateurs de poussière; Nettoyage
• F04D 29/08 - Joints d'étanchéité
• F04D 29/44 - Moyens de guidage du fluide, p.ex. diffuseurs
• F04D 29/046 - Paliers
• F04D 29/20 - Montage des rotors sur les arbres
• B26D 1/28 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupant; Appareils ou machines à cet effet; Eléments coupants à cet effet comportant un élément qui ne suit pas le mouvement de la pièce ayant un élément coupant se déplaçant autour d'un axe avec un élément coupant non circulaire se déplaçant autour d'un axe sensiblement perpendiculaire à la ligne de coupe et tournant sans arrêt dans le même sens pendant la coupe
• B62D 63/04 - Véhicules à moteurs - Parties constitutives ou accessoires

Abrégé

The present disclosure relates to the field of bolt pretightening force prediction. Provided are a bolt pretightening force attenuation prediction device and method, which are used to predict attenuation characteristics of a bolted connection. The bolt pretightening force attenuation prediction device comprises a pretightening force coefficient measurement device, and the pretightening force coefficient measurement device comprises a holding assembly, a pretightening force measurement assembly, a tightening assembly and a duration measurement assembly. The holding assembly is configured to secure a bolt to be tested; the pretightening force measurement assembly is configured to measure a pretightening force to which the bolt is subjected; the tightening assembly is configured to apply the pretightening force to the tested bolt; and the duration measurement assembly is configured to measure the duration of each instance of sampling during bolt tightening. By means of the technical solution, the prediction of variation of a bolt pretightening force with a vibration period under different operation conditions and the prediction of the probability distribution of the bolt pretightening force are realized, a confidence interval in the the sense of probability is given, and the dispersion of a bolt pretightening force attenuation process can be more accurately reflected. The technical solution has very important significance for the anti-loosening design and maintenance period of a bolted connection.

Classes IPC  ?

• G01L 5/24 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour déterminer la valeur du couple ou du moment de torsion pour le serrage d'un écrou ou d'un autre organe soumis à une contrainte analogue

Abrégé

Provided in the present disclosure are an emergency drainage vehicle and an operating apparatus thereof. The operating apparatus comprises: a luffing mechanism, comprising a base, a rotating arm and a luffing drive apparatus, a bottom end of the base being used to connect to the body of the emergency drainage vehicle, a first end of the rotating arm in a length direction being hinged to the base around a horizontal axis, and the luffing drive apparatus having a drive connection to the rotating arm, and being used to drive the rotating arm to rotate relative to the base; a transfer mechanism mounted on the rotating arm and comprising a first support and a first transfer drive apparatus, the first transfer drive apparatus having a drive connection to the first support and being used to drive the first bracket and the rotating arm to approach each other or move away from each other along a first transfer direction, and the first transfer direction being perpendicular to the length direction of the rotating arm and the horizontal axis; and a drainage mechanism used to execute a drainage operation, the drainage mechanism being movably disposed on the first support along a length direction of the first support. The emergency drainage vehicle and the operating apparatus thereof of the present disclosure can expand the operation range of the emergency drainage vehicle and increase emergency rescue efficiency.

Classes IPC  ?

• B60P 3/00 - Véhicules adaptés pour transporter, porter ou comporter des charges ou des objets spéciaux
• E03F 7/10 - Appareils roulants pour la vidange des égouts ou des fosses d'aisances
• E01H 1/10 - Emploi de l'eau pour désagréger ou détacher les matières indésirables; Appareils de ratissage ou de raclage

Abrégé

Provided in the present invention are an engaging structure for use in plate welding, and a welding device and method without welding spot alignment. The device comprises a connection bracket, a welding gun and a cutting mechanism, wherein the welding gun is fixed on the connection bracket, and the cutting mechanism is fixedly connected to the connection bracket by means of a posture adjustment mechanism. The plates to be welded are each provided with the engaging structure, and after two plates are assembled, multi-dimensional constraints can be achieved by means of the engaging structure. Before welding, according to the actual constraint dimension requirement, the edges of the plates are cut, assembled and engaged according to the form of the engaging structure; and after the position of the welding gun is adjusted, the cutting mechanism and the welding gun are driven by a welding robot or a special welding machine to move in the direction of a welding seam. The cutting mechanism is responsible for removing the engaging structure, and then the welding gun performs normal welding. According to the present invention, the working procedure of welding spot alignment and then grinding is directly omitted, thereby improving the welding efficiency and the welding seam quality and saving on costs for labor and material resources.

Classes IPC  ?

• B23K 28/02 - Procédés ou appareils combinés pour le soudage ou le découpage
• B23K 37/00 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe
• B23K 26/38 - Enlèvement de matière par perçage ou découpage

Abrégé

The present disclosure relates to an arc ion coating device and a coating method. The arc ion coating device includes: a vacuum chamber with a vacuum environment inside; an arc generation component disposed in the vacuum chamber and comprising a cathode target, an anode and an arc starter, the cathode target being columnar and configured to release plasmas, and the arc starter being disposed between the cathode target and the anode and configured to generate charged particles to guide a generation of an arc between a side of the cathode target and the anode to coat a workpiece; a support frame disposed in the vacuum chamber, the support frame being disposed at a side of the anode away from the cathode target and configured for a placement of the workpiece; and a power supply component comprising an arc power supply and a first accumulator, the arc power supply having a first output end and a second output end, the first output end being configured to output a pulsed voltage and connected to the arc starter, the second output end being configured to output an adjustable DC voltage and charge the first accumulator, and a negative pole and a positive pole of the first accumulator being connected to the cathode target and the anode, respectively.

Classes IPC  ?

• H05H 1/48 - Production du plasma utilisant un arc
• H05H 1/54 - Accélérateurs de plasma
• C23C 14/32 - Evaporation sous vide par évaporation suivie d'une ionisation des vapeurs
• C23C 14/54 - Commande ou régulation du processus de revêtement

Abrégé

A method and system for controlling machine tool descent stability, and a tractor. An outlet of a main pump (2) is connected to inlets of a main relief valve (3), fixed-difference relief valve (5), and machine tool control valve (6) respectively; an oil outlet of the machine tool control valve (6) is connected to a spring cavity of the fixed-difference relief valve (5) via a steady-state throttle valve (4), and moreover, the oil outlet of the machine tool control valve (6) is connected to an inlet of a switch valve (8); an oil outlet of the switch valve (8) is connected to a rodless cavity of a suspension oil cylinder (9) in a suspension mechanism; the rodless cavity of the suspension oil cylinder (9) is also connected to an inlet of a lowering valve (7); a rod cavity of the suspension oil cylinder (9) is connected to an inlet of a secondary relief valve (10); a position sensor (12), a force sensor (11), a lowering knob (16), a target position setting knob (15), and a lowering speed setting knob (14) are electrically connected to an input end of a controller (13); an output end of the controller (13) is electrically connected to a solenoid valve of the machine tool control valve (6), a solenoid valve of the lowering valve (7), and a solenoid valve of the switch valve (8) respectively.

Classes IPC  ?

• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
• F15B 19/00 - Test des systèmes ou appareils de manœuvre utilisant la pression d'un fluide, dans la mesure où ils ne sont pas prévus ailleurs
• F15B 15/28 - Moyens pour indiquer la position, p.ex. fin de course
• F15B 21/08 - Systèmes de servomoteur comportant des moyens de commande actionnés électriquement
• A01B 63/02 - Dispositifs ou agencements de levage ou de réglage pour machines ou instruments agricoles pour instruments montés sur tracteurs

Abrégé

An engineering machinery maintainability evaluation method and apparatus, and a computer apparatus and a storage medium. The engineering machinery maintainability evaluation method comprises: for each maintenance component in the whole engineering machinery or an engineering machinery system, determining a maintainability evaluation value of the maintenance component according to a maintenance input requirement, a maintenance process and a maintenance result of the maintenance component (1); and determining a maintainability evaluation value of the whole engineering machinery or the engineering machinery system according to the maintainability evaluation value of each maintenance component (2). By means of the method, items of a maintenance requirement evaluation score and a maintenance result effect evaluation score are included, such that compared with the related art wherein only a maintenance process is evaluated, the method is more comprehensive and rational.

Classes IPC  ?

• G06Q 10/06 - Ressources, gestion de tâches, des ressources humaines ou de projets; Planification d’entreprise ou d’organisation; Modélisation d’entreprise ou d’organisation

Abrégé

The present disclosure relates to a workpiece cleaning device and a cleaning method. The workpiece cleaning device comprises: a frame (1); and a plurality of cleaning tanks disposed on the frame (1) side by side, comprising a molten salt cleaning tank (2) for cleaning a workpiece with molten salt, a first rinsing tank (5) for rinsing the workpiece cleaned with the molten salt, a de-rusting cleaning tank (6) for cleaning the workpiece rinsed in the first rinsing tank (5) with a de-rusting agent, a second rinsing tank (7) for rinsing the workpiece cleaned with the de-rusting agent, and an anti-rust cleaning tank (8) for cleaning the workpiece rinsed in the second rinsing tank (7) with anti-rust liquid, which are sequentially disposed from upstream to downstream in terms of procedure.

Classes IPC  ?

• C23G 1/28 - Nettoyage ou décapage de matériaux métalliques au moyen de solutions ou de sels fondus avec des sels fondus
• B08B 3/08 - Nettoyage impliquant le contact avec un liquide le liquide ayant un effet chimique ou dissolvant
• B08B 3/12 - Nettoyage impliquant le contact avec un liquide avec traitement supplémentaire du liquide ou de l'objet en cours de nettoyage, p.ex. par la chaleur, par l'électricité ou par des vibrations par des vibrations soniques ou ultrasoniques
• B08B 3/14 - Enlèvement des déchets, p.ex. des étiquettes, se trouvant dans le liquide de nettoyage
• C23G 1/02 - Nettoyage ou décapage de matériaux métalliques au moyen de solutions ou de sels fondus avec des solutions acides
• C23G 1/24 - Nettoyage ou décapage de matériaux métalliques au moyen de solutions ou de sels fondus avec des solutions neutres
• C23G 1/36 - Régénération des liqueurs de décapage usées

Abrégé

The present disclosure relates to a hydraulic control system, a tractor, and a hydraulic control method. The hydraulic control system comprises a hydraulic pump, a hydraulic cylinder, an execution element, a first electric control valve, and a control apparatus. The hydraulic cylinder is in fluid communication with the hydraulic pump. The execution element is connected to a cylinder rod of the hydraulic cylinder. The first electric control valve is arranged on a connecting pipeline between the hydraulic pump and the hydraulic cylinder. The first electric control valve is configured to adjust the amount of flow of the connecting pipeline. The control apparatus is in signal connection with the first electric control valve. The control apparatus is configured to control, during the rising process of the execution element, the maximum input current of the first electric control valve to be a first current value, the first current value being the minimum current required for the first electric control valve when the amount of output flow of the hydraulic pump reaches the maximum value.

Classes IPC  ?

• F15B 11/048 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour commander la vitesse en fonction de la position de l'élément de travail avec commande de la décélération
• A01B 3/04 - Charrues à traction animale
• G05D 7/06 - Commande de débits caractérisée par l'utilisation de moyens électriques

Abrégé

A backhoe loader capable of achieving efficient digging. The backhoe loader comprises: a vehicle body (1) comprising a first vehicle body (11) and a second vehicle body (12) connected in sequence; a loading device (2) arranged on the first vehicle body (11); a manipulation platform (3) arranged on the second vehicle body (12), the manipulation platform (3) being configured to be rotatable 360° relative to the second vehicle body (12); a cab (4) arranged on a first side of the manipulation platform (3); and a digging device (5) arranged on a second side of the manipulation platform (3) opposite to the first side, the digging device (5) being configured to be rotatable 180° relative to the cab (4). The backhoe loader can achieve 360° digging, two-way driving, and other functions. When the digging device (5) is working, the backhoe loader can be directly moved after support legs are retracted, without changing the position of a seat back and forth, thereby improving the digging efficiency. The backhoe loader provides an operator with a wide visual field and a good sense of control, has a compact structure, and the vehicle bodies have good stability.

Classes IPC  ?

• E02F 3/96 - Dragues; Engins de terrassement entraînés mécaniquement avec des dispositions pour l'emploi alterné d'éléments de creusement différents

Abrégé

A modular excavator, comprising a plurality of detachably connected assembly modules, the plurality of assembly modules comprising: a frame turntable base module (M1); track beam assembly modules (M2, M3) configured to be connected to the frame turntable base module (M1); track modules (M4, M5) configured to be connected to the track beam assembly modules (M2, M3); a rotation drive module (M6) configured to be connected to the frame turntable base module (M1); a power assembly module (M7) configured to be connected to the frame turntable base module (M1); counterweight modules (M8, M9) configured to be connected to the power assembly module (M7); a cab module (M10) configured to be connected to the frame turntable base module (M1); a fuel tank module (M11) configured to be connected to the frame turntable base module (M1); a boom assembly module (M12) configured to be connected to the frame turntable base module (M1); a stick assembly module (M13) configured to be connected to the boom assembly module (M12); and a work machine tool module (M14) configured to be connected to the stick assembly module (M13). The present modular excavator facilitates a quick arrival to a work site, thereby ensuring work progress.

Classes IPC  ?

• E02F 9/08 - Superstructures; Supports de superstructures
• E02F 9/16 - Cabines, plates-formes ou similaires pour le conducteur
• E02F 9/18 - Contrepoids
• E02F 3/04 - Dragues; Engins de terrassement entraînés mécaniquement
• E02F 3/32 - Dragues; Engins de terrassement entraînés mécaniquement avec des outils excavateurs montés sur un bras plongeur ou à godets, p.ex. plongeurs, godets et bras plongeur pivotant sur une poutre en porte à faux travaillant vers le bas et vers la machine, p.ex. avec retro-pelletage

Abrégé

The present invention relates to the field of polymer materials, and relates to a high-strength self-lubricating polyurethane piston sealing body, and a preparation method therefor. In particular, the present invention relates to a composition that can be used to prepare a piston sealing body, a piston sealing body prepared from the composition, and a method for preparing the piston sealing body. The piston sealing body of the present invention can be used as a concrete piston sealing body for a concrete pumping device.

Classes IPC  ?

• C08L 75/08 - Polyuréthanes à partir des polyéthers
• C08L 23/06 - Polyéthylène
• C08L 27/18 - Homopolymères ou copolymères du tétrafluoro-éthylène
• C08K 3/22 - Oxydes; Hydroxydes de métaux
• C08K 9/06 - Ingrédients traités par des substances organiques par des composés contenant du silicium
• E04G 21/02 - Transport ou travail du béton ou de matériaux similaires susceptibles d'être mis en tas ou coulés
• F04B 53/14 - Pistons, tiges de piston ou liaisons piston-tige

Abrégé

A wear plate for a concrete pump truck, a preparation method therefor, and the concrete pump truck. The wear plate for a concrete pump truck comprises: a base body (3) comprising two through holes (31), a nose bridge portion (32) and two arc-shaped portions (33), wherein the nose bridge portion (32) is arranged between the two through holes (31), and the two arc-shaped portions (33) and the nose bridge portion (32) form the two through holes (31); a first wear-resistant body (1) comprising first portions (11) and a second portion (12), wherein one first portion (11) is provided in each through hole (31) of the two through holes (31), the first portions (11) are connected to the nose bridge portion (32), and the second portion (12) is arranged on a surface of the nose bridge portion (32) and located between the two through holes (31); and second wear-resistant bodies (2), wherein one second wear-resistant body (2) is provided in each through hole (31) of the two through holes (31), the second wear-resistant bodies (2) are connected to the arc-shaped portions (33), the wear resistance of the first wear-resistant body (1) is greater than that of the second wear-resistant bodies (2), and the wear resistance of the second wear-resistant bodies (2) is greater than that of the base body (3). The wear-resistant bodies (1, 2) are arranged on a surface of the nose bridge portion (32) and on inner walls of the through holes (31) to improve the wear resistance. In addition, a preset amount of tungsten is added into the wear-resistant body (1) of the nose bridge portion (32) to improve the wear resistance and impact resistance of the wear-resistant body (1).

Classes IPC  ?

• F04B 53/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF; POMPES - Parties constitutives, détails ou accessoires non prévus dans les groupes ou ou présentant un intérêt autre que celui visé par ces groupes
• 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
• B22D 19/16 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour fabriquer des moulages composites à partir de métaux différents, p.ex. pour fabriquer des cylindres de laminoirs
• B22D 19/08 - Coulée dans, sur, ou autour d'objets formant partie intégrante du produit final pour établir des garnitures ou revêtements, p.ex. de métal antifriction
• C22C 29/02 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p.ex. cermets, ou d'autres composés métalliques, p.ex. oxynitrures, sulfures à base de carbures ou de carbonitrures
• C22C 29/12 - Alliages à base de carbures, oxydes, borures, nitrures ou siliciures, p.ex. cermets, ou d'autres composés métalliques, p.ex. oxynitrures, sulfures à base d'oxydes
• C22C 38/00 - Alliages ferreux, p.ex. aciers alliés

Abrégé

222 solid lubrication layer of the bushing inner ring (2), in combination with the oil storage function of the powder metallurgy, allows for the liquid-solid synergistic lubrication between a friction pair, enhancing the lubrication function.

Classes IPC  ?

• B22F 7/06 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p.ex. pour former des outils à embouts rapportés
• B22F 5/10 - Fabrication de pièces ou d'objets à partir de poudres métalliques caractérisée par la forme particulière du produit à réaliser d'articles avec des cavités ou des trous, non prévue dans les sous-groupes précédents
• B22F 1/145 - Traitement chimique, p.ex. passivation ou décarburation
• B22F 9/04 - Fabrication des poudres métalliques ou de leurs suspensions; Appareils ou dispositifs spécialement adaptés à cet effet par des procédés physiques à partir d'un matériau solide, p.ex. par broyage, meulage ou écrasement à la meule
• C22C 38/06 - Alliages ferreux, p.ex. aciers alliés contenant de l'aluminium

Abrégé

A heavy-duty, high-power and large-torque chassis dynamometer in a multi-environment system. The chassis dynamometer comprises a dynamometric platform (1) arranged on the ground, and a stand (2) located below the dynamometric platform (1), wherein a fixed base (3) and a sliding base (4) are sequentially arranged on an inner side of the stand (2) in the length direction of the dynamometric platform (1); a pair of first rotating hub assemblies (6) are installed above the fixed base (3) by means of several supports (8); the sliding base (4) is provided with a sliding platform (5) thereon; a pair of second rotating hub assemblies (7) are installed on the sliding platform (5) by means of the several supports (8); tension sensor assemblies (13) are also connected to the outer circumference of the first rotating hub assembly (6) and the outer circumference of the second rotating hub assembly (7); and the tension sensor assemblies (13) are fixedly disposed on the supports (8). The dynamometer is characterized by having a stable structure and multiple testing functions, being heavy duty, and having a high power and a large torque; and the center distance between the two groups of rotating hub assemblies (6, 7) can be adjusted by means of fixed and sliding arrangement, thereby adapting to chassis dynamometric tests of different heavy-duty trucks.

Classes IPC  ?

• G01L 3/24 - Dispositifs pour déterminer la valeur de la puissance, p.ex. en mesurant et en multipliant simultanément les valeurs du couple par le nombre de tours par unité de temps, en multipliant les valeurs de la force de traction ou propulsive par la vitesse
• G01L 5/00 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques
• G01M 17/007 - Véhicules à roues ou à chenilles

Abrégé

A motor direct-drive roller of a heavy-duty chassis dynamometer, comprising a roller body (1); a mounting end face (2) is provided on the inner circumference of the roller body (1); a transmission shaft (3) coaxial with the roller body (1) is sleeved on the mounting end face (2); a drive assembly (4) is sleeved on the transmission shaft (3); a bearing assembly (5) is provided on each of two axial sides of the drive assembly (4); a plurality of axial mounting plates (6) are provided on the outer circumference of the drive assembly (4); a tension force sensor assembly (7) is connected to the axial mounting plate (6) located outside the roller body (1), and the tension force sensor assembly (7) is mounted on a support frame (8); an end portion flange plate (9) is further sleeved on the end portion of the transmission shaft (3) far away from the mounting end face (2); and several brake assemblies (10) are arranged on the end portion flange plate (9), and the brake assemblies (10) are also mounted on the support frame (8). The present roller has a compact structure, and the position arrangements of components are rational, thereby fully utilizing the space inside the roller body (1), and satisfying the test requirements for direct drive and heavy duty.

Classes IPC  ?

• G01L 3/24 - Dispositifs pour déterminer la valeur de la puissance, p.ex. en mesurant et en multipliant simultanément les valeurs du couple par le nombre de tours par unité de temps, en multipliant les valeurs de la force de traction ou propulsive par la vitesse
• G01L 5/00 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques
• G01L 5/13 - 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 puissance de traction ou propulsive des véhicules
• F16D 65/095 - Pivots ou leurs organes de support
• F16D 55/22 - Freins à surfaces de freinage substantiellement radiales pressées l'une contre l'autre dans une direction axiale, p.ex. freins à disques avec disques ou patins déplaçables selon l'axe pressés contre des organes en rotation situés dans l'axe par serrage entre des organes mobiles de freinage, p.ex. des disques ou des patins de freins mobiles

Abrégé

The present disclosure provides a method of designing and manufacturing a hydraulic valve block based on selective laser melting. The method includes providing a machined hydraulic valve block, determining whether the machined hydraulic valve block needs weight reduction, if the machined hydraulic valve block needs weight reduction, taking reduction of the pressure loss of the flow channel as an optimization goal and optimizing the flow channel of the machined hydraulic valve block to obtain an optimized flow channel structure model, taking reduction of the weight of the hydraulic valve block as an optimization goal and optimizing solid portions of the optimized flow channel structure model by using a topology optimization method to obtain a three-dimensional solid structure model of a hydraulic valve block and printing the three-dimensional solid structure model by using selective laser melting to obtain the hydraulic valve block.

Classes IPC  ?

• B33Y 10/00 - Procédés de fabrication additive
• B33Y 80/00 - Produits obtenus par fabrication additive
• B22F 10/28 - Fusion sur lit de poudre, p.ex. fusion sélective par laser [FSL] ou fusion par faisceau d’électrons [EBM]
• B22F 10/85 - Acquisition ou traitement des données pour la commande ou la régulation de procédés de fabrication additive
• B33Y 50/02 - Acquisition ou traitement de données pour la fabrication additive pour la commande ou la régulation de procédés de fabrication additive
• G06F 30/10 - CAO géométrique
• G06F 111/10 - Modélisation numérique
• B23K 26/342 - Soudage de rechargement
• G06F 119/18 - Analyse de fabricabilité ou optimisation de fabricabilité

Abrégé

The present disclosure provides an engineering vehicle and an air-conditioning system thereof. The air-conditioning system comprises: an air conditioner body, which comprises a housing provided with a first air outlet and a second air outlet; a first air supply pipeline, wherein a first end of the first air supply pipeline is connected to the first air outlet; one or more first air supply port structures, which are arranged at the front end of the interior of a cab of an engineering vehicle and are connected to a second end of the first air supply pipeline; a second air supply pipeline, wherein a first end of the second air supply pipeline is connected to the second air outlet; one or more second air supply port structures, which are arranged at the rear end of the interior of the cab and are connected to a second end of the second air supply pipeline; and a flow distribution device, which comprises a flow distribution portion located in the housing, wherein the flow distribution portion is movably arranged relative to at least one of the first air outlet and the second air outlet so as to change the outlet air volume ratio of the air conditioner body, and the outlet air volume ratio is the ratio of the volume of air flowing out of the housing from the first air outlet to the volume of air flowing out of the housing from the second air outlet. The engineering vehicle and the air-conditioning system thereof are conducive to improving the comfort of a driver.

Classes IPC  ?

• B60H 1/00 - Dispositifs de chauffage, de refroidissement ou de ventilation