Hydraulic axial piston unit includes a rotatable cylinder block and a valve segment with two pressure ports. An IDC control port and an ODC control port are located on the valve segment in circumferential direction between the circumferential ends of the pressure ports such that a cylinder bore can be fluidly connected to the IDC control port or the ODC control port when the associated working piston is at or close to its inner dead center or outer dead center. The circumferential distance from the control ports to the pressure ports is smaller than the circumferential extension of the cylinder bores. A first and a second bypass line each connecting one of the control ports are provided with an adjustable orifice in the first bypass line, capable of continuously variably opening and closing the first bypass line in order to enable an adjustable fluid flow connection between the connected pressure port and the connected pressure port.
F04B 1/324 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres en modifiant l’inclinaison du plateau oscillant
F04B 1/2021 - Détails ou parties constitutives caractérisés par la zone de contact entre le corps de cylindre et la platine à soupape
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
An automatic tool tilt command system for a boom moveably connected with one end to a chassis of a working machine, wherein a tiltable tool is attachable to the other end. A first electronic control valve for controlling a fluid flow to and from a lift cylinder for moving the boom and a second electronic control valve for controlling a fluid flow to and from a tilt cylinder for tilting the tool. A control unit receives signals to move the boom and transmits signals to the first electronic control valve in order to move the boom. In parallel the control unit transmits signals to the second electronic control valve which are based on a predetermined fluid flow ratio defined by the fluid flow for the boom movement and the fluid flow for tool levelling, so that the tool maintains its inclination angle with respect to the horizontal.
A system for transmitting control area network signals includes a first mechanical system, and a first component for determining conditions of the first mechanical system. The first component is provided with at least an ultra-wideband transmitter. A second component has at least an ultra-wideband receiver. The first component is operable to transmit at least one of a control signal and a diagnostic signal from the first mechanical system to the second component as a controller area network signal. A method is also disclosed.
A method includes the steps of providing a plurality of ultrawide band ("UWB") components that may be transmitters and/or receivers (22, 44, 52, 53) at a first location on a machine part (20, 40, 42, 51), and providing at least one UWB component that may be a transmitter and/or receiver at a second location, with at least one of the UWB components communicating with a control on one of the first and second locations. Radial frequency signals are sent from at least one of the UWB components at one of the first and second locations to a second UWB component on the other of the first and second locations, and receiving a reflective signal at the at least one UWB component, and determining a relative position of the first and second locations in at least two dimensions.
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
G01S 13/02 - Systèmes utilisant la réflexion d'ondes radio, p. ex. systèmes du type radar primaireSystèmes analogues
A01B 69/00 - Direction des machines ou instruments agricolesGuidage des machines ou instruments agricoles selon un parcours déterminé
5.
HYDRAULIC CIRCUIT ARRANGEMENT AND CONTROL SYSTEM FOR GANGED ELECTRONICALLY-COMMUTATED PUMPS
A hydraulic circuit arrangement includes a plurality of electronically-commutated pumps providing flow to a common hydraulic line, the plurality of electronically-commutated pumps including one or more quantized electronically-commutated pumps and one or more unquantized electronically-commutated pumps. A controller includes a pressure controller and a flow divider. The pressure controller is configured to receive a pressure signal corresponding to the pressure within the common hydraulic line, to compare the pressure signal to a demanded pressure, and to determine a target flow value required to produce the demanded pressure. The flow divider is configured to receive the target flow value and allocate the target flow value into a quantized target flow value for allocation among the one or more quantized electronically-commutated pumps and an unquantized target flow value for allocation among the one or more unquantized electronically-commutated pumps.
The fan system includes a fan operated by a hydraulic motor which is driven by a hydraulic variable displacement pump that includes a displacement volume adjusting element. A tilt angle of the displacement volume adjusting element can be adjusted by controlling a tilt current supplied to an electronic displacement control unit. The hydraulic fan system further includes means for determining the volumetric flow rate of the pump and a control unit having: a signal connection to the means for determining the volumetric flow rate of the pump, a signal connection to a fan speed setting device, and a fan speed calculating unit for calculating a fan speed from the determined volumetric flow rate, a fan speed error determining unit for determining a fan speed error by comparing the calculated fan speed to the fan speed set by the fan speed setting device. The control unit can supply an adapted tilt current to the electronic displacement control unit in order to adjust the tilt angle of the displacement volume adjusting device, such that the volumetric flow rate can be adapted in order to reduce the fan speed error, wherein an ideal tilt current value is derived from the calculated fan speed and safety actions are performed in order to prevent damage to the fan, if the difference between the ideal tilt current value and the adapted tilt current is higher than a tilt current threshold value.
Hydraulic axial piston unit comprising a rotatable cylinder block and a valve segment with two pressure ports. An IDC control port and an ODC control port are located on the valve segment in circumferential direction between the circumferential ends of the pressure ports such that a cylinder bore can be fluidly connected to the IDC control port or the ODC control port when the associated working piston is at or close to its inner dead center or outer dead center. The circumferential distance from the control ports to the pressure ports is smaller than the circumferential extension of the cylinder bores. A first and a second bypass line each connecting one of the control ports are provided with an adjustable orifice in the first bypass line, capable of continuously variably opening and closing the first bypass line in order to enable an adjustable fluid flow connection between the connected pressure port and the connected pressure port.
F04B 1/2021 - Détails ou parties constitutives caractérisés par la zone de contact entre le corps de cylindre et la platine à soupape
F04B 1/30 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
The invention relates to pseudo-stationary angular position encoding device (1, 12, 20) that comprises at least a light source (2), a first polarisation device (4), a second polarisation device (5), and a light intensity detecting device (3). First and second polarisation device (4, 5) are arranged rotatably relative to each other. The pseudo-stationary angular position encoding device (1, 12, 20) is arranged in a way that light emanating from the light source (2) passes through the first and second polarisation device (4, 5) and illuminates the light intensity detecting device (3).
G01D 5/34 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens optiques, c.-à-d. utilisant de la lumière infrarouge, visible ou ultraviolette avec atténuation ou obturation complète ou partielle des rayons lumineux les rayons lumineux étant détectés par des cellules photo-électriques
A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.
B66F 7/06 - Châssis de levage, p. ex. pour lever des véhiculesAscenseurs à tablier à tabliers supportés par des leviers pour un mouvement vertical
B66F 7/08 - Châssis de levage, p. ex. pour lever des véhiculesAscenseurs à tablier à tabliers supportés par des leviers pour un mouvement vertical actionnés hydrauliquement ou pneumatiquement
F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques
F04B 23/02 - Installations ou systèmes de pompage comportant des réservoirs
F04B 49/22 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes par clapets
F15B 11/05 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour commander la vitesse spécialement adaptés pour maintenir une vitesse constante, p. ex. à compensation de pression, sensibles à la charge
F15B 15/18 - Ensembles combinés comportant moteur et pompe
A hydraulic steering system (1) is described. The hydraulic steering system (1) comprises a steering motor (2) and a joystick (3) having a housing (4), a handle (5) mounted movably to the housing (4), a handle angle sensor (6) and return to center means (7) producing a restoring force on the handle (5), wherein the return to center means (7) produces a variable restoring force depending on an angle of the handle (5) and/or on a signal at an input (8) of the return to center means (7) for a parameter of a vehicle to be steered and the joystick (3) can be operated in a first mode, in which the operator operates the joystick to determine the direction into which the vehicle is steered and the return to center means (7) produce a restoring force on the handle (5) in a direction towards a neutral position of the handle (5). Such a system should help an operator to steer a vehicle in a safe manner. To this end the joystick (3) can be operated in a second mode, in which the vehicle can be steered by a GPS-System, wherein in the second mode the return to center means (7) move the handle (5) in a position corresponding to a steering angle of the steering motor (2).
B62D 5/09 - Direction assistée ou à relais de puissance à fluide, c.-à-d. au moyen d'un fluide sous pression produisant toute la force nécessaire, ou la plus grande partie de celle-ci, pour commander la direction du véhicule caractérisée par les moyens d'actionnement des valves
B62D 15/02 - Indicateurs de direction ou aides de direction
DANFOSS POWER SOLUTIONS (JIANGSU) CO., LTD (Chine)
DANFOSS POWER SOLUTIONS INC. (USA)
Inventeur(s)
Du, Zhekang
Chen, Xiaozhong
Abrégé
The lifting mechanism includes a battery, an electric machine, a hydraulic pump, an oil tank, a hydraulic cylinder, a work platform and a proportional valve or switch valve. In the energy-regeneration mode, the hydraulic fluid drives the hydraulic pump to operate as a hydraulic motor, thus in turn driving the electric machine to operate as a generator and charge the battery. In the present application, the hydraulic pump operates to increase a pressure in a hydraulic line between the hydraulic pump and the proportional valve or switch valve before the proportional valve or switch valve is switched from a unidirectional communication position to a bidirectional communication position. When the proportional valve or switch valve is switched from the unidirectional communication position to the bidirectional communication position, by increasing the pressure in the hydraulic line, it could be avoided that the volume of hydraulic fluid has low pressure is compressed because the hydraulic fluid has low pressure is communicated with hydraulic fluid has high pressure; therefore a state of sudden drop of the work platform is avoided, and safety performance and operating experience of the lifting mechanism is improved.
B66F 3/32 - Moyens pour éviter les à-coups excessifs en fin de mouvement
F15B 11/04 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour commander la vitesse
F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de 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 15/18 - Ensembles combinés comportant moteur et pompe
F15B 11/028 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour régler la puissance
F15B 11/044 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour commander la vitesse par des moyens de commande situés dans le circuit de retour
F15B 11/068 - Systèmes de servomoteurs dépourvus d'asservissement comportant des moyens particuliers pour l'utilisation d'un agent compressible, p. ex. de l'air, de la vapeur d'eau avec des clapets permettant de mettre progressivement le système pneumatique sous pression
F15B 20/00 - Dispositions propres à la sécurité pour systèmes de manœuvre utilisant les fluidesUtilisation des dispositifs de sécurité dans les systèmes de manœuvre utilisant des fluidesMesures d'urgence pour les systèmes de manœuvre utilisant des fluides
Danfoss Power Solutions (Jiangsu) Co., Ltd. (Chine)
Danfoss Power Solutions Inc. (USA)
Inventeur(s)
Du, Zhekang
Chen, Xiaozhong
Abrégé
A lifting mechanism has a descending mode including an energy-regeneration mode and a non-energy-regeneration mode. The lifting mechanism includes: a battery, an electric machine, a hydraulic pump, an oil tank, a hydraulic cylinder, a work platform and a flow limiting valve. In the energy-regeneration mode, the hydraulic fluid drives the hydraulic pump to operate as a hydraulic motor, thus in turn driving the electric machine to operate as a generator and charge the battery. In the non-energy-regeneration mode, the flow limiting valve limits the maximum of the descending speed of the work platform. In the present application, the flow limiting valve is used to provide throttling resistance to limit the maximum of the descending speed of the hydraulic fluid, thus in turn defining the maximum of the descending speed of the work platform. Therefore, in the present application, by using the flow limiting valve to define the maximum of the descending speed of the work platform, the safety problem due to an accelerated descent during descending of the work platform may be solved, and thus the safety of the lifting mechanism may be ensured.
B66F 3/32 - Moyens pour éviter les à-coups excessifs en fin de mouvement
F15B 11/04 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour commander la vitesse
F15B 15/18 - Ensembles combinés comportant moteur et pompe
F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.
F15B 11/08 - Systèmes de servomoteurs dépourvus d'asservissement avec un seul servomoteur
F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
F15B 13/042 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique actionnés par la pression du fluide
F15B 13/044 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique actionnés par des moyens commandés électriquement, p. ex. des solénoïdes, des moteurs à couple
DANFOSS POWER SOLUTIONS (JIANGSU) CO., LTD. (Chine)
DANFOSS POWER SOLUTIONS INC. (USA)
Inventeur(s)
Du, Zhekang
Chen, Xiaozhong
Abrégé
In the present application, a lifting mechanism is provided. The lifting mechanism includes a battery, an electric machine, a hydraulic pump, an oil tank, a hydraulic cylinder, a work platform and a proPortional valve or switch valve. In the energy-regeneration mode, the hydraulic fluid drives the hydraulic pump to operate as a hydraulic motor, thus in turn driving the electric machine to operate as a generator and charge the battery. In the present application, the hydraulic pump operates to increase a pressure in a hydraulic line between the hydraulic pump and the proportional valve or switch valve before the proportional valve or switch valve is switched from a unidirectional communication position to a bidirectional communication position. When the proportional valve or switch valve is switched from the unidirectional communication position to the bidirectional communication position, by increasing the pressure in the hydraulic line, it could be avoided that the volume of hydraulic fluid has low pressure is compressed because the hydraulic fluid has low pressure is communicated with hydraulic fluid has high pressure; therefore a state of sudden drop of the work platform is avoided, and safety performance and operating experience of the lifting mechanism is improved.
DANFOSS POWER SOLUTIONS (JIANGSU) CO., LTD. (Chine)
DANFOSS POWER SOLUTIONS INC. (USA)
Inventeur(s)
Du, Zhekang
Chen, Xiaozhong
Abrégé
In the present application, a lifting mechanism is provided. The lifting mechanism has a descending mode comprising an energy-regeneration mode and a non-energy-regeneration mode. The lifting mechanism comprises: a battery, an electric machine, a hydraulic pump, an oil tank, a hydraulic cylinder, a work platform and a flow limiting valve. In the energy-regeneration mode, the hydraulic fluid drives the hydraulic pump to operate as a hydraulic motor, thus in turn driving the electric machine to operate as a generator and charge the battery. In the non-energy-regeneration mode, the flow limiting valve limits the maximum of the descending speed of the work platform. In the present application, the flow limiting valve is used to provide throttling resistance to limit the maximum of the descending speed of the hydraulic fluid, thus in turn defining the maximum of the descending speed of the work platform. Therefore, in the present application, by using the flow limiting valve to define the maximum of the descending speed of the work platform, the safety problem due to an accelerated descent during descending of the work platform may be solved, and thus the safety of the lifting mechanism may be ensured.
A system for calibrating an electrohydraulic pump using a micro-controller that has software that may command the engine to a speed value and to uncommand the electrohydraulic pump such that a baseline engine load is defined. The software may also, thereafter, command the electrohydraulic pump to ramp up until the electrohydraulic pump goes into stroke thereby increasing the engine load to an amount over the baseline engine load. When this occurs, the software may define a start current value for that direction of the electrohydraulic pump.
F04B 17/03 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci entraînées par des moteurs électriques
F04B 51/00 - Tests des "machines", pompes ou installations de pompage
F15B 11/16 - Systèmes de servomoteurs dépourvus d'asservissement avec plusieurs servomoteurs
A hydraulic piston unit including a rotational group for driving or being driven by a driving shaft, and having a tiltable displacement element for adjusting the displacement volume of the rotational group between a minimum or a maximum displacement, wherein, on t valve segment between a kidney-shaped inlet port and a kidney-shaped outlet port at respective dead end positions of reciprocally moveable working pistons first and second control ports are located in fluid connection with cylinder bores in the cylinder block, for controlling the position of the displacement element. The hydraulic piston unit further includes a control valve with a shiftable control valve spool fluidly connected via a high pressure port to a high pressure side of the hydraulic piston unit. The control valve spool is configured to conduct hydraulic fluid from the high pressure side to one of the first or the second control port.
F03C 1/06 - Machines motrices à liquide à pistons alternatifs avec des cylindres multiples et caractérisées par le nombre ou la disposition des cylindres les axes des cylindres étant sensiblement coaxiaux, parallèles ou inclinés par rapport à l'axe de l'arbre principal
F03C 1/00 - Machines motrices à liquide à pistons alternatifs
F04B 1/122 - Détails ou parties constitutives, p. ex. soupapes, joints d'étanchéité ou moyens de lubrification
F04B 1/20 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal le bloc-cylindres étant rotatif
F04B 1/324 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres en modifiant l’inclinaison du plateau oscillant
F03C 1/08 - Systèmes particuliers de distribution à tiroirs les concernant
18.
HYDRAULIC CIRCUIT ARRANGEMENT AND CONTROL SYSTEM FOR GANGED ELECTRONICALLY-COMMUTATED PUMPS
A hydraulic circuit arrangement includes a plurality of electronically- commutated pumps (10a-10f) providing flow to a common hydraulic line (65), each of the electronically-commutated pumps provided with an associated electronically-commutated pump controller (18a-18f). The plurality of electronically-commutated pumps (10a-10f) includes one or more quantized electronically-commutated pumps and one or more unquantized electronically-commutated pumps, wherein the one or more quantized electronically-commutated pumps (10a) are configured to produce a quantized target flow value that is less than a total target flow value determined for the common hydraulic line, and wherein the one or more unquantized electronically-commutated pumps (10b) are configured to produce an unquantized target flow value that is the difference between the quantized target flow value and the total target flow value.
Hydraulic fan system and method for controlling the speed of a hydraulic fan system. The fan system comprises a fan operated by a hydraulic motor which is driven by a hydraulic variable displacement pump comprising a displacement volume adjusting element. A tilt angle of the displacement volume adjusting element can be adjusted by controlling a tilt current supplied to an electronic displacement control unit. The hydraulic fan system further comprises means for determining the volumetric flow rate of the pump and a control unit comprising: a signal connection to the means for determining the volumetric flow rate of the pump, a signal connection to a fan speed setting device, and a fan speed calculating unit for calculating a fan speed from the determined volumetric flow rate, a fan speed error determining unit for determining a fan speed error by comparing the calculated fan speed to the fan speed set by the fan speed setting device. The control unit can supply an adapted tilt current to the electronic displacement control unit in order to adjust the tilt angle of the displacement volume adjusting device, such that the volumetric flow rate can be adapted in order to reduce the fan speed error, wherein an ideal tilt current value is derived from the calculated fan speed and safety actions are performed in order to prevent damage to the fan, if the difference between the ideal tilt current value and the adapted tilt current is higher than a tilt current threshold value.
A system and method for secure remote control of a machine includes transmitting video data from a camera on the machine to an operator controller located at a remote operation station, and receiving, at a machine controller of the machine, an operator control message from the operator controller. The operator control message is based on an input device actuated in response to the video data. The method further includes confirming validity of the operator control message based, at least in part, on the video data transmitted from the camera to the operator controller, and controlling the machine with the operator control message when validity of the operator control message is confirmed.
G05D 1/00 - Commande de la position, du cap, de l'altitude ou de l'attitude des véhicules terrestres, aquatiques, aériens ou spatiaux, p. ex. utilisant des pilotes automatiques
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
G05B 19/045 - Commande à programme autre que la commande numérique, c.-à-d. dans des automatismes à séquence ou dans des automates à logique utilisant des machines à états logiques composées uniquement d'une mémoire ou d'un dispositif logique programmable contenant la logique de la machine commandée et dans lesquelles l'état de ses sorties dépend de l'état de ses entrées, ou d'une partie des états de sa propre sortie, p. ex. contrôleurs de décision binaire, automates finis
An anti-stall system to prevent an engine, particularly a low-powered engine, from stalling when encountering a load that the machine is capable of overcoming but due to the nature of the engine, the load encounter would result in a stall. The system includes a hydraulic system in communication with a control system that has one or more sensors that detect, determine, and/or transmit an operational variable. The control system further comprises a plurality of anti-stall blocks having unique configurations, including a first configured to limit output flow upon determination of an engine droop, a second configured to limit output flow based on available engine torque, a third configured to limit output pressure upon rapid engine droop detection, and a fourth configured to prioritize and share output flow between the machine functions. The anti-stall blocks provide for complementary and cooperative configuration to prevent a stall from occurring based on responses to the detection and determination of various dynamic and continuous operational variables in real-time or near real-time with operational parameters.
E02F 9/22 - Entraînements hydrauliques ou pneumatiques
F02B 63/06 - Adaptations des moteurs pour entraîner des pompes, des outils tenus à la main ou des génératrices électriquesCombinaisons portatives de moteurs avec des dispositifs entraînés par des moteurs pour pompes
F02D 29/04 - Commande de moteurs, cette commande étant particulière aux dispositifs entraînés, ces dispositifs étant autres que des organes ou accessoires essentiels à la marche du moteur, p. ex. commande de moteur par des signaux extérieurs particulière aux moteurs entraînant des pompes
F15B 20/00 - Dispositions propres à la sécurité pour systèmes de manœuvre utilisant les fluidesUtilisation des dispositifs de sécurité dans les systèmes de manœuvre utilisant des fluidesMesures d'urgence pour les systèmes de manœuvre utilisant des fluides
A hydraulic control system for linear actuation that includes an electric motor connected to a hydraulic pump and a hydraulic cylinder connected to the pump by a first flow line. A pressure transducer, a pressure control valve, and a check valve are connected to the first flow line between the pump and the cylinder and a tank is connected to the pump by a second flow line and the cylinder by a return line. A control valve is connected between the first flow line and the return line.
A hydraulic control system for linear actuation that provides a bypass flow during startup of a lifting command, provides a split flow between a cylinder and a reservoir once a minimum operating speed of a pump has been reached, and provides complete flow to a cylinder after the minimum operating speed of the pump has been reached. This is achieved through control of a flow control valve and a proportional flow control valve by a processor.
B66F 7/08 - Châssis de levage, p. ex. pour lever des véhiculesAscenseurs à tablier à tabliers supportés par des leviers pour un mouvement vertical actionnés hydrauliquement ou pneumatiquement
A control arrangement for a variable displacement pump includes a pressure control unit and a separate mechanical control unit, each mounted on a housing of the variable displacement pump. The pressure control unit provides pressure control for the variable displacement pump and the mechanical control unit provides rotary feedback control for the variable displacement pump.
F04B 49/08 - Régulation par la pression de refoulement
F04B 9/04 - "Machines" ou pompes à piston caractérisées par les moyens entraînants ou entraînés liés à leurs organes de travail les moyens étant mécaniques constitués par des cames, des excentriques ou des mécanismes à téton et rainure guide
F04B 1/295 - Commande pour "machines" ou pompes à cylindres immobiles en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres en modifiant l’inclinaison du plateau oscillant
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F04B 49/12 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes en modifiant la course des organes de travail
The invention relates to a method (19) of operating a hydraulic arrangement (1) including a mounting base (5), a boom (3) that is pivotably arranged on the mounting base (5), and a Z-kinematics (2) that is arranged on the boom (3). The Z-kinematics (2) tilts a tool attachment device (10), that is pivotably arranged on the boom (3). The boom (3) is moved by a lifting hydraulic piston (7) that is connected to the boom (3) and to the mounting base (5). The Z-kinematics (2) is moved by at least a tilting hydraulic piston (11) that is connected to a lever of the Z-kinematics (2) and to the mounting base (5). On application of an input control command for changing the position of the lifting hydraulic piston (7), a compensation command is automatically generated and applied to the tilting hydraulic piston (11), to essentially maintain the attitude of the tool attachment device (10). The compensation command is generated based on the input control command for the lifting hydraulic piston (7), using a mathematical model of the hydraulic arrangement (1).
E02F 3/34 - DraguesEngins de terrassement entraînés mécaniquement avec des outils excavateurs montés sur un bras plongeur ou à godets, p. ex. plongeurs, godets avec bras-plongeurs pivotant sur le bâti du tracteur ou de l'engin automoteur
E02F 3/43 - Commande de la position du plongeur ou de l'augeCommande de la succession des opérations d'entraînement
Hydraulic axial piston unit having a rotational group for driving or being driven by a driving shaft, and a tiltable displacement element for adjusting the displacement volume of the rotational group. The rotational group includes a rotatable cylinder block in which working pistons are mounted reciprocally moveable in cylinder bores for conveying hydraulic fluid from an inlet port to an outlet port on a valve segment. At least two control ports are located on the valve segment each between the inlet port and the outlet port. The control ports can be brought sequentially in fluid connection with the cylinder bores when the cylinder block is rotating. At least one hydraulic fluid injector is connected fluidly to one control port, for sequentially injecting pressurized hydraulic fluid via the control port into the passing cylinder bores. Via the other control port hydraulic fluid can be drained from passing cylinder bores.
F01B 3/00 - "Machines" ou machines motrices à piston alternatif avec axes des cylindres coaxiaux, parallèles ou inclinés par rapport à l'axe de l'arbre principal
F04B 1/30 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs
F04B 1/34 - Commande non prévue dans les groupes , , ou
F04B 1/20 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal le bloc-cylindres étant rotatif
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F04B 49/12 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes en modifiant la course des organes de travail
35.
ELECTRIC DISPLACEMENT CONTROL FOR AN OPEN CIRCUIT VARIABLE DISPLACEMENT PUMP
An electric displacement control system has a hydraulic variable displacement pump that operates in an open hydraulic circuit. A servo piston is disposed within a servo bore that is connected to the hydraulic variable displacement pump. Located in the servo bore is a control spool valve having an orifice that vents fluid pressure from the servo bore to a pump case. The flow rate of the system depends upon a fluid force between a feedback spring on a first side of the control spool valve and a solenoid actuator force on a second side of the control spool valve.
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F04B 17/00 - Pompes caractérisées par leur combinaison avec des machines motrices ou moteurs particuliers qui les entraînent ou par leur adaptation à ceux-ci
F04B 49/22 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes par clapets
Automatic tilt command system of a hydraulically driven boom moveably connected with one end to a chassis of a working machine, wherein a tiltable tool is attachable to the other end. The system further comprises a first electronic control valve for controlling a fluid flow to and from a boom lift cylinder for moving of the boom and a second electronic control valve for controlling a fluid flow to and from a tilt cylinder for tilting the tool. A control unit receives input signals with regard to moving the boom and transmits based on the received input signals actuating signals to the first electronic control valve in order to move the boom. In parallel the control unit transmits tilting signals to the second electronic control valve which are based on a predetermined fluid flow ratio defined by the fluid flow for the boom movement and the fluid flow for tool levelling, so that the tool maintains its inclination angle with respect to the horizontal.
E02F 9/22 - Entraînements hydrauliques ou pneumatiques
F15B 13/044 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique actionnés par des moyens commandés électriquement, p. ex. des solénoïdes, des moteurs à couple
37.
Cradle bearing assembly of swashplate type hydraulic axial piston unit
A bearing assembly having an inner race, an outer race, and a plurality of rollers positioned between the inner race and the outer race. A pad is attached to the inner race and a bed is attached to the outer race. A timing mechanism is slidably mounted to the pad and the bed. Preferably the pad and bed are made of plastic and the inner race is embedded within the pad and the outer race is embedded within the bed.
The invention relates to a method (25) of determining the health status of a hydraulic circuit arrangement comprising at least one hydraulic fluid working machine (2, 3). The health status is determined (29) using at least in part an actual temperature information (12) of the hydraulic circuit arrangement (1) that is compared to an expected temperature information (24) of the hydraulic circuit arrangement (1).
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
G08B 21/24 - Alarmes aide-mémoire, p. ex. alarmes contre la perte
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
39.
METHOD FOR DETERMINING THE HEALTH STATUS OF THE HYDRAULIC CIRCUIT ARRANGEMENT
The invention relates to a method (25) of determining the health status of a hydraulic circuit arrangement comprising at least one hydraulic fluid working machine (2, 3). The health status is determined (29) using at least in part an actual temperature information (12) of the hydraulic circuit arrangement (1) that is compared to an expected temperature information (24) of the hydraulic circuit arrangement (1).
An electric torque and pressure control for load sensing pumps includes a variable open circuit pump with a swash plate angle sensor. The pump is connected in line with a pressure compensated load sensing control having an electrically variable pressure relief valve and orifice. Connected to the circuit is an engine speed sensor, a user input device, and a micro-controller. The micro-controller has software that controls a pressure relief setting of the electrically variable pressure relief valve in the pressure sensing control based upon signals from the swash plate sensor and the engine speed sensor and inputs from the user input device.
A hydrostatic system that provides different volumetric efficiency at different states and includes a pump with a discharge and supply line. Connected between the discharge and supply line is a valve. The valve is adapted to move to a position having a cross port orifice when the pump is in a neutral state and a position where the ports are blocked when the pump is in an operation state.
F04B 49/08 - Régulation par la pression de refoulement
F04B 49/24 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes par clapets de dérivation
F04B 49/035 - Commande d'arrêt, de démarrage, de décharge ou de ralenti par clapets de dérivation
F04B 49/02 - Commande d'arrêt, de démarrage, de décharge ou de ralenti
42.
Cover plate and seal carrier that eliminates bearing endplay
A bearing attachment system for a pump product having a seal carrier and a cover plate. The attachment system is configured to produce a force deflection curve that provides a clamping force on a pair of tapered roller bearings such that a tight bearing endplay on the tapered roller bearings is maintained through a full range of manufacturing tolerances. The geometric shape of the cover plate and the top surface of the seal carrier provide the desired deflection characteristics.
A system and method for secure remote control of a machine includes transmitting video data from a camera on the machine to an operator controller located at a remote operation station, and receiving, at a machine controller of the machine, an operator control message from the operator controller. The operator control message is based on an input device actuated in response to the video data. The method further includes confirming validity of the operator control message based, at least in part, on the video data transmitted from the camera to the operator controller, and controlling the machine with the operator control message when validity of the operator control message is confirmed.
According to the present disclosure, a system for providing steering control in a dual path machine includes a propulsion controller operatively connected to plants of the machine for driving ground contacting elements, the propulsion controller being configured to control steering of the dual path machine through drive signals sent to the plants, and a brake controller operatively connected to left and right brakes of the machine, the brake controller being configured to control steering of the machine by providing differential brake pressures to the left and right brakes. The system of the present disclosure provides redundant steering control by receiving an input signal at the brake controller with an indication of steering position, receiving an input signal at the brake controller with an indication of brake position, and providing a differential brake pressure to brakes of the dual path machine based on the steering input signal and brake input signal.
B60W 50/035 - Mise des unités de commande dans un état prédéterminé, p. ex. en donnant la priorité à des éléments d'actionnement particuliers
B60W 10/04 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des ensembles de propulsion
B60W 10/184 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des systèmes de freinage avec des freins de roues
A pressure limiting system for a dual path machine wherein an input propel command from a propel device is scaled based upon the largest detected pressure in a hydraulic system to determine a modified propel command. Also, response time is adjusted within an electrical control system based upon the type of input propel command signal received.
According to the present disclosure, a steering system and method for a machine includes a vehicle control system configured to command steering of the machine, and a steering sensor in communication with the vehicle control system. The steering sensor is configured to detect a position of a steering actuator of the machine. The vehicle control system is configured to detect an acceleration rate of the machine and to command steering of the machine based at least in part on the position of the steering actuator and the acceleration rate of the machine.
B62D 5/04 - Direction assistée ou à relais de puissance électrique, p. ex. au moyen d'un servomoteur relié au boîtier de direction ou faisant partie de celui-ci
B60W 10/08 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des ensembles de propulsion comprenant la commande des unités de traction électrique, p. ex. des moteurs ou des générateurs
B60W 10/20 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des systèmes de direction
A hydraulic piston unit including a rotational group for driving or being driven by a driving shaft, and having a tiltable displacement element for adjusting the displacement volume of the rotational group between a minimum or a maximum displacement, wherein, on t valve segment between a kidney-shaped inlet port and a kidney-shaped outlet port at respective dead end positions of reciprocally moveable working pistons first and second control ports are located in fluid connection with cylinder bores in the cylinder block, for controlling the position of the displacement element. The hydraulic piston unit further includes a control valve with a shiftable control valve spool fluidly connected via a high pressure port to a high pressure side of the hydraulic piston unit. The control valve spool is configured to conduct hydraulic fluid from the high pressure side to one of the first or the second control port.
F03C 1/06 - Machines motrices à liquide à pistons alternatifs avec des cylindres multiples et caractérisées par le nombre ou la disposition des cylindres les axes des cylindres étant sensiblement coaxiaux, parallèles ou inclinés par rapport à l'axe de l'arbre principal
F03C 1/00 - Machines motrices à liquide à pistons alternatifs
F03C 1/08 - Systèmes particuliers de distribution à tiroirs les concernant
F04B 1/20 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal le bloc-cylindres étant rotatif
F04B 1/32 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
F04B 1/12 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal
F04B 1/122 - Détails ou parties constitutives, p. ex. soupapes, joints d'étanchéité ou moyens de lubrification
F04B 1/324 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres en modifiant l’inclinaison du plateau oscillant
48.
High ambient temperature propulsion speed control of a self-propelled agricultural product applicator
A system, apparatus and method are provided for limiting operating speed at high temperatures of a self-propelled, agricultural product applicator having a hydraulic drive system including a pump supplying pressurized hydraulic fluid to a variable-displacement hydraulic motor operatively connected for propelling the applicator. A temperature sensor detects a temperature of the pressurized hydraulic fluid in the hydraulic system. A propel controller is operatively connected between the temperature sensor and the propulsion motor and configured for limiting displacement of the propulsion motor according to one or more predetermined de-rated conditions resulting in reduced motor speed, in accordance with a predetermined schedule, when predetermined motor de-rating activation temperature limits of the hydraulic fluid are detected by the temperature sensor. The controller is further configured for providing a de-rated condition warning signal prior to limiting displacement of the propulsion motor.
F16H 61/42 - Commande des transmissions exclusivement à fluide hydrostatique impliquant le réglage d'une pompe ou d'un moteur à débit ou cylindrée variable
F16H 39/02 - Transmissions rotatives à fluide utilisant des pompes et des moteurs du type volumétrique, c.-à-d. débitant un volume prédéterminé de fluide à chaque révolution les moteurs à liquide étant à une certaine distance des pompes à liquide
F16H 61/47 - Régulation automatique selon les variables de commande pour atteindre une vitesse de sortie fixée
A01C 23/00 - Dispositifs distributeurs spécialement adaptés pour répandre le purin ou d'autres engrais liquides, y compris l'ammoniaque, p. ex. réservoirs de transport ou voitures arroseuses
F16H 59/72 - Entrées de commande vers des transmissions transmettant un mouvement rotatif pour changements de vitesse ou pour mécanismes d'inversion les entrées étant fonction de l'état de la transmission fonction des caractéristiques de l'huile, p. ex. température, viscosité
A01M 21/04 - Appareils pour destruction par la vapeur, les produits chimiques, le feu ou l'électricité
According to the present disclosure, a system and method for providing stability control to a machine includes generating a yaw signal at a gyroscope disposed on the machine and receiving the yaw signal at a controller in communication with the gyroscope. The controller is also in communication with a user input that generates control signals for driving at least one plant of the machine. The controller is configured to alter the control signals provided to the at least one plant from the user input based at least in part on the yaw signal.
B62D 6/04 - 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 réagissant uniquement aux forces perturbant la trajectoire désirée du véhicule, p. ex. forces agissant transversalement à la direction de déplacement du véhicule
G01C 21/18 - Plates-formes stabilisées, p. ex. par un gyroscope
According to the present disclosure, a controller includes a base and a continuous sealing layer connected to the base forming an environmentally sealed compartment between the base and a lower surface of the continuous sealing layer. A circuit board is positioned within the compartment, and a rotary knob encoder is positioned on an upper surface of the continuous sealing layer. Movement of the rotary knob encoder is detectable by the circuit board through the continuous sealing layer.
H01H 36/02 - Interrupteurs actionnés par la variation du champ magnétique ou champ électrique, p. ex. par le changement de la position relative d'un aimant et d'un interrupteur, par écran actionnés par le mouvement d'un flotteur portant un aimant
G05G 1/08 - Organes de commande actionnés à la main par un mouvement de rotation, p. ex. volants
G05G 5/03 - Moyens pour attirer l'attention de l'opérateur sur l'arrivée de l'organe de commande dans une position de commande ou de repèreCréation d'une sensation, p. ex. moyens pour générer une force antagoniste
G05G 13/02 - Mécanismes de commande manuelle équipés de plusieurs organes de commande ainsi que de plusieurs organes commandés avec les organes de commande séparés pour la présélection et le déplacement des organes commandés
H01H 13/10 - SoclesContacts fixes montés sur les socles
H01H 13/14 - Organes d'actionnement, p. ex. bouton-poussoir
H01H 89/00 - Combinaisons de plusieurs types d'interrupteurs électriques, de relais, de sélecteurs et de dispositifs de protection d'urgence, non couvertes par un des autres groupes principaux de la présente sous-classe
G05G 9/047 - Mécanismes de commande manuelle équipés d'un seul organe de commande travaillant avec plusieurs organes commandés, p. ex. en sélection ou simultanément l'organe de commande étant manœuvré de différentes manières indépendantes, chacune de ces manœuvres individuelles entraînant un seul organe commandé dans lesquels la manœuvre de l'organe de commande peut être effectuée de plusieurs manières simultanément l'organe de commande étant manœuvré à la main autour d'axes orthogonaux, p. ex. manches à balai
A hydraulic unit includes a driving mechanism whose displacement volume is adjustable to two operational states by means of a position-able adjustment element. The adjustment element can be positioned by a servo piston of a servo unit into a first, initial position and a second, operative position. A first front face and a second front face of the servo piston, which are opposing each other, can be pressurized individually with pressurized hydraulic fluid in order to position the servo piston at either end position of a servo cylinder of the servo unit. The servo piston is of a stepped design thereby forming a ring-shaped damping surface opposing the first front face. In the servo cylinder a ring-shaped shoulder surface is formed opposing the damping surface such that a damping volume is formed in the servo cylinder by the damping surface, the shoulder surface and the servo cylinder.
F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F03C 1/06 - Machines motrices à liquide à pistons alternatifs avec des cylindres multiples et caractérisées par le nombre ou la disposition des cylindres les axes des cylindres étant sensiblement coaxiaux, parallèles ou inclinés par rapport à l'axe de l'arbre principal
F03C 1/40 - Commande spécialement adaptée à ces machines motrices
F16H 61/46 - Régulation automatique selon les variables de commande
F15B 11/04 - Systèmes comportant essentiellement des moyens particuliers pour commander la vitesse ou la puissance d'un organe de sortie pour commander la vitesse
B60T 13/24 - Transmission de l'action de freinage entre l'organe d'attaque et les organes terminaux d'action, avec puissance de freinage assistée ou relais de puissanceSystèmes de freins incorporant ces moyens de transmission, p. ex. systèmes de freinage à pression d'air avec assistance, entraînement ou relâchement par fluide le fluide étant un gaz
F16H 61/423 - Commande de la cylindrée du moteur par des moyens de commande par pression de fluide
F16H 61/47 - Régulation automatique selon les variables de commande pour atteindre une vitesse de sortie fixée
52.
Hydraulic system for maintaining minimum low side pressure of closed circuit hydraulic system
A hydraulic system that has a hydraulic pump connected to and in communication with a hydraulic motor, at least one hydraulic cylinder, or both by a first conduit and a second conduit (i.e., a high side and a low side). The hydraulic system has a bypass valve connected to and in communication with the first conduit and the second conduit. The bypass valve has a preset pressure that is above a minimum low side pressure. When a shock load occurs in the hydraulic system and a related drop in pressure on the low side occurs, the bypass valve opens when the preset pressure is passed thereby preventing the pressure from dropping to the minimum low side pressure. The hydraulic system thereby avoids a low loop event that could cause damage to the hydraulic system without the presence of larger charge pumps or accumulators.
F16H 61/4052 - Commande d'une soupape de dérivation en utilisant un orifice variable, p. ex. un clapet à orifice
F16H 61/4104 - Vidange, p. ex. en utilisant des soupapes de vidange ou par raccordement à l'échappement
F16H 61/4139 - Pompes de remplissage ou de balayage, p. ex. pompes de charge auxiliaire
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
A servo piston assembly having a servo piston body mounted within a servo piston cylinder. A pair of bushings are mounted within each end of the servo piston body. An elongated bore extends through the servo piston body and receives a guide rod that extends out of the servo piston body and is received within the servo piston cylinder.
F04B 1/29 - Commande pour "machines" ou pompes à cylindres immobiles en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
F15B 13/00 - Parties constitutives des systèmes de servomoteurs
F04B 1/32 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
54.
Inductive battery power transfer for powering wireless sensors for construction and agricultural equipment
A wireless sensor assembly that includes a battery pack and a wireless sensor. The battery pack is placed in spaced relation to the wireless sensor and inductively powers the wireless sensor utilizing primary and secondary resonant coils presented within the battery pack and wireless sensor. The wireless sensor additionally has super capacitors therein to continue to operate the wireless sensor during the changing of the battery pack.
A hydraulic control system for steering rear caster wheels of a work machine. The control system has a steering mode that proportionally controls the steering of rear caster wheels while compensating the circuit to keep steering performance independent from the load generated by the rear caster wheels, a no steering mode that maintains the position of the rear caster wheels in the absence of a steering command, and a freewheeling mode that permits the rear caster wheels to rotate freely 360°.
B62D 5/06 - Direction assistée ou à relais de puissance à fluide, c.-à-d. au moyen d'un fluide sous pression produisant toute la force nécessaire, ou la plus grande partie de celle-ci, pour commander la direction du véhicule
B62D 5/26 - Direction assistée ou à relais de puissance à fluide, c.-à-d. au moyen d'un fluide sous pression produisant toute la force nécessaire, ou la plus grande partie de celle-ci, pour commander la direction du véhicule spécialement adaptée à un type particulier de boîtiers de direction ou à une application particulière pour axes montés à pivotement
B62D 5/065 - Direction assistée ou à relais de puissance à fluide, c.-à-d. au moyen d'un fluide sous pression produisant toute la force nécessaire, ou la plus grande partie de celle-ci, pour commander la direction du véhicule caractérisée par des moyens spécialement adaptés pour faire varier selon les besoins l'alimentation en fluide sous pression, p. ex. à la demande, pour une assistance variable
B62D 9/00 - Direction pour roues orientables non prévue ailleurs
B62D 5/08 - Direction assistée ou à relais de puissance à fluide, c.-à-d. au moyen d'un fluide sous pression produisant toute la force nécessaire, ou la plus grande partie de celle-ci, pour commander la direction du véhicule caractérisée par le type de valve utilisé
A bearing arrangement includes a shaft with an outer circumferential supporting surface, and a mounting device with an inner circumferential supporting surface. The mounting device supports the shaft in a rotatable manner using a bearing structure. At least one tiltable sleeve member is arranged between at least one of the supporting surfaces and the bearing structure.
A pump control system, comprising: a motor (12) configured to drive a pump (14); a pressure relief valve (22) in fluid communication with the pump (14); a torque control valve (32) connected to a swashplate of the pump (14) and in fluid communication with the pressure relief valve (22); a swashplate angle sensor (36) connected to the swashplate (34); and a computer (40) connected to the swashplate angle sensor (36) and the pressure relief valve (22) wherein the computer (40) controls the pressure relief valve (22) based upon swashplate displacement to achieve maximum system pressure. The corresponding method of controlling is also disclosed.
F04B 1/29 - Commande pour "machines" ou pompes à cylindres immobiles en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
F04B 1/32 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
F04B 1/295 - Commande pour "machines" ou pompes à cylindres immobiles en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres en modifiant l’inclinaison du plateau oscillant
F04B 1/324 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres en modifiant l’inclinaison du plateau oscillant
F04B 49/12 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes en modifiant la course des organes de travail
59.
Electronic load sense control with electronic variable load sense relief, variable working margin, and electronic torque limiting
An electrical pressure control load sense system having a pump connected inline to an operator control spool valve and a compensation circuit. The system also has a plurality of sensors, at least one pressure transducer, a micro-processor, a fixed orifice, a proportional pressure relief valve, and a swashplate angle sensor.
F15B 11/16 - Systèmes de servomoteurs dépourvus d'asservissement avec plusieurs servomoteurs
F04B 49/22 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes par clapets
F04B 1/32 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
A joystick for operating heavy machinery. The joystick has a base assembly and a grip assembly wherein a display is integrated into the first end of the grip assembly and the second end is pivotably mounted within the base assembly. Movement of the grip assembly relative to the base assembly moves an actuating assembly of the heavy machinery wherein the display is able to provide useful information to the user during operation.
G06F 3/033 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires
G06F 3/0338 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires avec détection du déplacement linéaire ou angulaire limité d’une partie agissante du dispositif à partir d’une position neutre, p. ex. manches à balai isotoniques ou isométriques
G05G 9/047 - Mécanismes de commande manuelle équipés d'un seul organe de commande travaillant avec plusieurs organes commandés, p. ex. en sélection ou simultanément l'organe de commande étant manœuvré de différentes manières indépendantes, chacune de ces manœuvres individuelles entraînant un seul organe commandé dans lesquels la manœuvre de l'organe de commande peut être effectuée de plusieurs manières simultanément l'organe de commande étant manœuvré à la main autour d'axes orthogonaux, p. ex. manches à balai
A hydraulic valve with electropneumatic activation includes an air inlet that receives pressurized air from an air compressor and directs it into a line of the cylinder. The line is connected to an extension line attached to a solenoid extension valve that allows or blocks the passage of pressurized air from the extension line to a rear line. The rear line is attached to the rear chamber of the cylinder and connected to a retraction line attached to a solenoid retraction valve that allows or blocks the passage of pressurized air from the retraction line to an anterior line, which is attached to the front chamber of the cylinder. Thus, the passage of pressurized air is managed according to the desired movement of the stem of the hydraulic actuator. The pneumatic tubes are eliminated and electropneumatic valves are replaced by solenoid valves incorporated into the cylinder of the hydraulic valve.
F15B 13/043 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs pour utilisation avec un servomoteur unique actionnés par la pression du fluide avec clapets-pilotes commandés électriquement
F15B 13/08 - Assemblages de distributeurs élémentaires utilisés chacun pour la commande d'un seul servomoteur
62.
ELECTRONIC TORQUE AND PRESSURE CONTROL FOR LOAD SENSING PUMPS
A pump control system, comprising: a motor (12) configured to drive a pump (14); a pressure relief valve (22) in fluid communication with the pump (14); a torque control valve (32) connected to a swashplate of the pump (14) and in fluid communication with the pressure relief valve (22); a swashplate angle sensor (36) connected to the swashplate (34); and a computer (40) connected to the swashplate angle sensor (36) and the pressure relief valve (22) wherein the computer (40) controls the pressure relief valve (22) based upon swashplate displacement to achieve maximum system pressure. The corresponding method of controlling is also disclosed.
F04B 1/29 - Commande pour "machines" ou pompes à cylindres immobiles en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
F04B 1/32 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
A servo piston assembly (10) having a servo piston body mounted within a servo piston cylinder (32). A pair of bushings (34) are mounted within each end of the servo piston body. An elongated bore (38) extends through the servo piston body and receives a guide rod (36) that extends out of the servo piston body and is received within the servo piston cylinder (32).
F04B 1/20 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal le bloc-cylindres étant rotatif
F04B 1/32 - Commande pour "machines" ou pompes à blocs-cylindres rotatifs en modifiant les positions relatives d'un plateau oscillant et d'un bloc-cylindres
Method for engaging and disengaging a hydraulic motor which is adjustable in its displacement from and to a hydrostatic drive train of a hydromechanical transmission with a closed hydraulic fluid circuit. Two adjustable hydraulic motors and a hydraulic pump are arranged in parallel in the hydrostatic drive train and connected to a mechanical drive on the output side. At least one of the two hydraulic motors is connected to the mechanical drive via an assigned clutch. As appropriate to the driving situation, during operation of the other hydraulic motor and the hydraulic pump at least one of the hydraulic motors is engaged via the assigned clutch with the hydromechanical transmission from which the hydraulic motor was previously disengaged, likewise as appropriate to the driving situation. Before closing the clutch, the hydraulic motor to be engaged is accelerated load-free by deflecting its adjustment device in such a way that the rotational speed of an assigned clutch input shaft of the clutch is at least equal to the rotational speed of the clutch output shaft of the clutch which is connected to the mechanical gear. When the clutch is closed, both hydraulic motors act on a common output shaft of the mechanical gear.
B60W 10/04 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des ensembles de propulsion
B60W 10/10 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des boîtes de vitesses
F16H 47/02 - Combinaisons d'une transmission mécanique avec des embrayages à fluide ou une transmission à fluide la transmission à fluide étant du type volumétrique
B60W 10/103 - Commande conjuguée de sous-ensembles de véhicule, de fonction ou de type différents comprenant la commande des boîtes de vitesses transmissions à variation continue du rapport de type fluidique
B60W 10/111 - Boîte de vitesses étagée avec des trains d'engrenages de changement de vitesse séparés disposés en série
F16H 61/421 - Commande de la cylindrée du moteur par des moyens de commande électro-hydraulique, p. ex. utilisant des électrovannes
F16H 61/444 - Commande des transmissions exclusivement à fluide hydrostatique avec plus d'un ensemble pompe ou moteur en service en faisant varier le nombre d'ensembles pompe ou moteur en service
F16H 61/47 - Régulation automatique selon les variables de commande pour atteindre une vitesse de sortie fixée
66.
Speed control system for a hydrostatic transmission
A speed control system for a hydrostatic transmission includes an engine having a drive shaft connected to a hydraulic pump. At least one hydrostatic motor is connected to the pump in a closed circuit by a flow line. Connected to the motor via a system shaft is a vehicle system. A controller is connected to a plurality of sensors and a high pressure relief valve that is connected to the flow line between the pump and the motor. Based on information received from the sensors, the controller sets the pump and motor displacements to limit the pressure to a value that will not overspeed the engine and allow the system to automatically provide braking beyond the engine's capability. This may be accomplished through the use of various algorithms.
A speed control system for a hydrostatic transmission includes an engine having a drive shaft connected to a hydraulic pump. At least one hydrostatic motor is connected to the pump in a closed circuit by a flow line. Connected to the motor via a system shaft is a vehicle system. A controller is connected to a plurality of sensors and a proportional high pressure relief valve that is connected to the flow line between the pump and the motor. Based on information received from the sensors, the controller sets the pressure relief valve to limit the pressure to a valve that will not over-speed the engine and allows the demands of the speed control system to be attained. This may be accomplished through the use of various algorithms.
F16H 61/4008 - Commande de la pression dans le circuit
F16H 61/4157 - Commande de freinage, p. ex. empêchant le passage en surrégime de la pompe lorsque le moteur fait office de pompe
F16H 61/42 - Commande des transmissions exclusivement à fluide hydrostatique impliquant le réglage d'une pompe ou d'un moteur à débit ou cylindrée variable
F16H 61/4017 - Commande des hautes pressions, p. ex. évitant une pression excédentaire par une soupape de surpression
F16H 61/423 - Commande de la cylindrée du moteur par des moyens de commande par pression de fluide
F16H 61/433 - Commande du débit de la pompe par des moyens de commande par pression de fluide
F16H 61/421 - Commande de la cylindrée du moteur par des moyens de commande électro-hydraulique, p. ex. utilisant des électrovannes
Mounting structure for housing-free hydraulic axial piston machines of the bent axis or swash plate design, having a closing plate on which a cylinder block unit with displacing pistons arranged therein is supported, and having a drive or driven shaft. The mounting structure here is designed in the manner of a basket and has a receptacle for the drive or driven shaft and at least two struts which are in each case connected at one end to the receptacle and at the other end to the closing plate in such a manner that the closing plate, the cylinder block unit and the drive or driven shaft are held—analogously as in a housing—in a functionally ready position.
F01B 1/06 - "Machines" ou machines motrices à piston alternatif caractérisées par le nombre ou par la disposition relative des cylindres ou par le fait qu'elles sont construites à partir d'éléments cylindres-carter séparés avec cylindres disposés en étoile ou en éventail
F04B 27/22 - Commande pour pompes à bloc-cylindres rotatifs en modifiant les positions relatives d'un plateau en biais et d'un bloc-cylindres
F04B 1/20 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal le bloc-cylindres étant rotatif
F04B 1/24 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal le bloc-cylindres étant rotatif ayant plusieurs ensembles de cylindres ou de pistons inclinés par rapport à l'arbre principal
F04B 53/22 - Dispositions pour l'assemblage ou le démontage rapide
F03C 1/06 - Machines motrices à liquide à pistons alternatifs avec des cylindres multiples et caractérisées par le nombre ou la disposition des cylindres les axes des cylindres étant sensiblement coaxiaux, parallèles ou inclinés par rapport à l'axe de l'arbre principal
69.
Method of actuating a wireless sensor of road construction equipment
A method of actuating a wireless sensor of road construction equipment. A bracket is secured to the road construction equipment that has a magnet and is able to receive a wireless sensor. An actuator is disposed within the housing of the wireless sensor that reacts to the magnetic field created by the magnet such that when the wireless sensor is attached to the bracket the sensor is operable and when detached from the bracket no longer operates.
H01S 4/00 - Dispositifs utilisant l’émission stimulée de rayonnement électromagnétique dans des gammes d’ondes autres que celles couvertes par les groupes , ou , p. ex. masers à phonon, lasers à rayons X ou lasers gamma
70.
Neutral setting apparatus of an adjustable hydraulic machine
The invention relates to a neutral setting apparatus for adjustable hydraulic machines, in particular the adjustment of the neutral position of a servo valve. In particular, the invention relates to servo adjustment devices with mechanically adjustable control pistons, wherein the forces necessary for this can be applied mechanically, electro-magnetically, pneumatically or hydraulically. The invention relates to a neutral setting apparatus of an adjustable hydraulic machine, with a housing in which a mounted input shaft is arranged, to one end of which a torque can be applied for rotating the input shaft about an axis. Thus providing a robust and cost-effective setting mechanism for the neutral position of a servo valve.
A hydraulic power unit having a power shaft that rotates a cam. The cam actuates a piston assembly that contains a plurality of pistons wherein each piston has a piston body and fluid working chamber. An electrically actuated bypass valve is fluidly connected and in communication between an outlet check valve and a fluid working chamber of each piston such that when actuated the electrically actuated bypass valve directs fluid away from the outlet port into a reservoir to be returned to an inlet port.
F04B 1/12 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal
F04B 27/08 - Pompes multicylindres spécialement adaptées aux fluides compressibles et caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal
A sensing system for road construction equipment that includes a mounting bracket secured to a road construction vehicle that has an RFID tag. A wireless sensor is provided with an RFID reader so that when the wireless sensor is secured in the mounting bracket the RFID scanner is adjacent the RFID tag and scans and reads the RFID tag sending location information of the wireless sensor to a master controller.
E01C 19/00 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement
E01C 19/48 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement pour déposer les matériaux et les consolider, ou pour finir la surface
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de positionLocalisation par coordination de plusieurs déterminations de distance
A sensing system for providing vehicle automation. The system includes a master controller that is electrically connected to a receiver that has a transceiver that provides over-the-air communication to a plurality of wireless sensors. The transceivers receive information from the plurality of wireless sensors in order to automate the steering and elevation of the vehicle.
E01C 19/00 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement
H04Q 9/00 - Dispositions dans les systèmes de commande à distance ou de télémétrie pour appeler sélectivement une sous-station à partir d'une station principale, sous-station dans laquelle un appareil recherché est choisi pour appliquer un signal de commande ou pour obtenir des valeurs mesurées
74.
Sensor system for construction equipment having wireless sonic sensor system
A sensor system for road construction equipment. The system includes a first conveyor for transporting material to a first auger that is positioned to receive the material. A first feeder sensor associated with the first conveyor is in over-the-air communication with a receiver to communicate the height of a material on the conveyor such that a master controller that is electrically connected to the receiver can regulate the amount of flow of material to the first conveyor.
E01C 23/00 - Dispositifs ou dispositions auxiliaires pour la construction, la réparation, la remise en état ou la dépose de routes ou de surfaces similaires
A sensing system for providing string line vehicle automation. The system includes a master controller that is electrically connected to a receiver that has a transceiver that provides over-the-air communication to a plurality of sensors that are aligned along a string line. The transceivers receive information from the plurality of sensors in order to automate the control of the vehicle to ensure the vehicle drives in a straight line.
G06F 7/00 - Procédés ou dispositions pour le traitement de données en agissant sur l'ordre ou le contenu des données maniées
G01S 13/87 - Combinaisons de plusieurs systèmes radar, p. ex. d'un radar primaire et d'un radar secondaire
E01C 19/00 - Machines, outillage ou dispositifs auxiliaires pour préparer ou répartir les matériaux de revêtement, pour travailler les matériaux mis en place, ou pour façonner, consolider ou finir le revêtement
G01S 1/02 - Radiophares ou systèmes de balisage émettant des signaux ayant une ou des caractéristiques pouvant être détectées par des récepteurs non directionnels et définissant des directions, situations ou lignes de position déterminées par rapport aux émetteurs de radiophareRécepteurs travaillant avec ces systèmes utilisant les ondes radioélectriques
A compact vehicle having a body frame that contains an automatic transmission. The operating system of the vehicle has either an engine with a crankshaft that is transverse to the axis of movement of the vehicle or is parallel to the axis of movement of the vehicle. Additionally, the crankshaft is an input shaft to a split power transmission and actuates an output shaft to drive the axle and wheels of the vehicle. The split-power transmission uses a power summing device in combination with a plurality of clutches and variable power units in order to provide a shift between a first operating mode and a second operating mode.
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
The present disclosure is directed generally towards closing a snowboard binding locking lever with a pull cable that protrudes forward, upward, or upward and forward from the highback of the binding. One aspect of the present disclosure provides a pull cable with a cable guide and a grip. Another aspect includes a semi-rigid bendable guide to act as an additional guide for the pull cable. Another aspect includes a magnet or notch to fasten the grip towards the front of the binding.
A63C 10/24 - Supports de mollets ou talons, p. ex. gouttière ou arceaux réglables
A63C 10/04 - Fixations de surfs des neiges caractérisées par des parties constitutives du dispositif de retenue de la chaussure à sangles ou capot coiffant la chaussure
The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.
A hydrostatic transmission using a hydrostatic pump, a hydrostatic motor, and a pressure compensating load sensing auxiliary pump. The hydrostatic pump is fluidly connected to the hydrostatic motor using fluid lines and a center section. The hydrostatic pump additionally has an input shaft that drives the hydrostatic pump to provide the hydrostatic motor with power. Additionally, the pressure compensating load sensing auxiliary pump is in line with the hydrostatic pump and is rotated with the input shaft. This configuration allows the input shaft to operate the power takeoff (PTO) shaft while the hydrostatic motor output shaft operates the axles of a vehicle via a differential.
F16D 31/02 - Accouplements ou embrayages à fluide avec des groupes de pompage du type volumétrique, c.-à-d. dans lesquels passe un volume déterminé de liquide par tour de pompe utilisant des pompes à pistons ou à plongeurs travaillant dans des cylindres
A hydraulic generator drive system. The drive system has a control system that utilizes a first loop control that receives a signal associated with hydraulic pump or motor output and sends a command signal to a pump controller in order to control the hydraulic pump. Simultaneously, the control system has a second loop control that receives an input signal from the generator and sends a command signal to an armature to actuate the generator. As a result, a single control system is provided to control the speed and voltage output of the generator.
F03B 13/00 - Adaptations des "machines" ou machines motrices pour une utilisation particulièreCombinaisons des "machines" ou machines motrices avec les appareils entraînés ou qu'ils entraînentCentrales électriques ou ensembles machine-appareil
H02P 9/04 - Commande s'exerçant sur un moteur primaire non électrique et dépendant de la valeur d'une caractéristique électrique à la sortie de la génératrice
A variable displacement bent axis unit comprising a housing and a yoke pivotally disposed therein wherein the yoke has a cam member attached thereto. A control mechanism that changes the displacement of the unit has a control valve disposed therein that engages the cam member. The cam member itself has a non-linear feedback profile such that the feedback profile provides a linearized speed ratio.
Hydraulic system with a hydraulic machine, in particular an axial piston or radial piston unit, with rotating and moving machine components which are arranged in a housing. The housing is connected to a high-pressure and a low-pressure line of a working circuit, which is supplied with pressure fluid by means of a charge pump. The leakage fluid which occurs in the housing collects in a leakage fluid reservoir which is arranged below the rotating and moving hydraulic machine components in the working position of the hydraulic machine and is connected fluidically to the housing. The leakage fluid is pumped out of the leakage fluid reservoir into the low-pressure line of the working circuit by the charge pump.
B67D 7/74 - Dispositifs pour mélanger plusieurs liquides à transférer
E03B 5/00 - Utilisation des installations de pompageLeurs schémas de montage
E03B 11/00 - Aménagements ou adaptations de réservoirs pour l'alimentation en eau
E03B 7/07 - Disposition des appareils, p. ex. filtres, commandes du débit, dispositifs de mesure, siphons ou valves, dans les réseaux de canalisations
F04B 11/00 - Égalisation des pulsations, p. ex. au moyen de réservoirs d'airAnticavitation
F16L 55/04 - Dispositifs amortisseurs de vibrations ou de pulsations dans les fluides
F16K 23/00 - Clapets pour empêcher le dégouttement des buses
F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
F25D 21/14 - Ramassage et évacuation du condensat ou de l'eau de dégivrageBacs de dégivrage
F17D 3/00 - Dispositions pour la surveillance ou la commande des opérations de fonctionnement
F16D 31/02 - Accouplements ou embrayages à fluide avec des groupes de pompage du type volumétrique, c.-à-d. dans lesquels passe un volume déterminé de liquide par tour de pompe utilisant des pompes à pistons ou à plongeurs travaillant dans des cylindres
The invention relates to a hydraulic drive (2) having a main pump (8), which can be adjusted in terms of delivery volume and delivery direction, and having a hydraulic motor (9), which main pump (8) and hydraulic motor (9) are connected to one another in a closed circuit via pressure lines (10A, 10B), and having a charge pump (14, 15) for charging into the closed circuit and for supplying pressurized fluid to at least one controlling device (11, 12), wherein the charge pump (15) has a separate drive motor (19) whose power/rotational speed can be specified independently of the rotational speed of the drive (3) of the main pump (8). In this way, the charge pump (15) can be of smaller dimensions than previously conventional, and the power balance of the hydraulic drive can be improved.
F16D 31/02 - Accouplements ou embrayages à fluide avec des groupes de pompage du type volumétrique, c.-à-d. dans lesquels passe un volume déterminé de liquide par tour de pompe utilisant des pompes à pistons ou à plongeurs travaillant dans des cylindres
09 - Appareils et instruments scientifiques et électriques
Produits et services
Fluid power component kit for machine control comprising pumps and valves; Hydraulic valve actuators; Proportional flow valves as parts of machines; Servo-valves; Thermostatic control valves for machines Control valves for regulating the flow of gases and liquids; Expansion valves for fluid control; Pressure relief valves for hydraulic applications
86.
Variable displacement piston machine with a sensor
A variable displacement axial piston machine. The variable displacement axial piston machine includes a cylinder block with at least one main cylinder and main piston, a swash plate, a plunger arrangement with a plunger and auxiliary cylinder, and a sensor. The swash plate is arranged to effect movement of the main piston in the main cylinder upon rotation of the swash plate relative to the cylinder arrangement. The plunger is arranged to tilt the swash plate relative to the cylinder arrangement and to control a stroke of the main cylinder in the main piston. To provide a simple and reliable measurement of displacement of the main piston in the main cylinder, the invention provides a sensor element which is fixed in the auxiliary cylinder and which is adapted to sense movement of the plunger therein.
F04B 49/00 - Commande des "machines", pompes ou installations de pompage ou mesures de sécurité les concernant non prévues dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
F04B 27/08 - Pompes multicylindres spécialement adaptées aux fluides compressibles et caractérisées par le nombre ou la disposition des cylindres ayant des cylindres coaxiaux, parallèles ou inclinés par rapport à l'arbre principal
A hydrostatic transmission having a hydraulic pump that is fluidly connected to a hydraulic motor. The transmission also has a pressure control valve that has first and second stages and is fluidly connected to the hydraulic pump. By utilizing the pressure control valve when the first stage of the pressure control is at a minimum pressure the second stage determines the minimum charge pressure setting for the hydrostatic transmission.
F16D 31/02 - Accouplements ou embrayages à fluide avec des groupes de pompage du type volumétrique, c.-à-d. dans lesquels passe un volume déterminé de liquide par tour de pompe utilisant des pompes à pistons ou à plongeurs travaillant dans des cylindres
The invention relates to a mobile machine having a traction drive and working hydraulics. The drive unit has a radial piston pump which is driven by a drive set and supplies working hydraulics. The radial piston pump is arranged on the axis of the output drive shaft of the drive set, between the drive set and a gearbox which is connected thereto via the output drive shaft. The drive set, the radial piston pump and the gearbox in this case form a compact drive unit.
A selectable detent assembly that has a housing with a plurality of passageways. Within the housing is a selector spool that is disposed within a selector passageway and is rotatable to provide a plurality of rotational positions including a no detent position, a kick down position, and a continuous detent position. A pilot check valve is disposed within the housing and provides a fluid flow path from a pilot passageway to the selector passageway and a detent passageway. A detent arming piston is disposed within the detent passageway and is connected to a directional control valve spool. Thus, depending on the rotational position of the selector spool, the selector spool can either provide a continuous flow path through the selector passageway to a tank, a flow path that is controlled by the axial position of the selector spool or prevent flow to the tank in order to operate the detent arming piston.
F16K 11/00 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides
F16K 11/14 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont plusieurs éléments de fermeture ne se déplacent pas comme un tout actionnés par un seul organe de commande, p. ex. une clé
A joystick having a movable member that includes a shaft portion and a spherical portion wherein the shaft portion has a diameter less than the spherical portion. An actuating member is secured to the shaft portion of the movable member to provide actuation of the movable member. A magnet is disposed within the spherical portion of the movable member and positioned adjacent a three axis sensor such that the magnet moves in a hemispherical pattern along the three axis sensor to operate a device.
G05G 9/047 - Mécanismes de commande manuelle équipés d'un seul organe de commande travaillant avec plusieurs organes commandés, p. ex. en sélection ou simultanément l'organe de commande étant manœuvré de différentes manières indépendantes, chacune de ces manœuvres individuelles entraînant un seul organe commandé dans lesquels la manœuvre de l'organe de commande peut être effectuée de plusieurs manières simultanément l'organe de commande étant manœuvré à la main autour d'axes orthogonaux, p. ex. manches à balai
91.
Method of manufacturing a circuit board assembly for a controller
A method of manufacturing a circuit board assembly for a controller. The method includes providing first and second printed circuit boards wherein the first printed circuit board has a plurality of copper pads containing slots therein that correspond to a plurality of power tabs in the second printed circuit board. The power tabs are then slid into the slots and the tabs are flooded with copper. At this time the power tabs are soldered within the slots to provide an electrical connection between the first and second printed circuit boards that allows for the transfer of current between the boards of more than three amps.
A radial piston pump having external loading. The radial piston pump has an inner eccentric which is attached to a rotatable driveshaft, a cylinder block which has positionally fixed cylinder bores aligned radially with respect to the driveshaft, and displacement pistons which are mounted in a longitudinally movable manner in the cylinder bores. The displacement pistons have a piston head with a short casing height, and are mounted with their piston base on the eccentric, in such a way that the piston head, during its longitudinal movement, pivots in a predetermined angle range (Δα) about the longitudinal central axis of the associated cylinder bore.
F04B 1/04 - "Machines" ou pompes multicylindres caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail
F04B 27/053 - Pompes multicylindres spécialement adaptées aux fluides compressibles et caractérisées par le nombre ou la disposition des cylindres ayant des cylindres disposés en étoile ou en éventail avec un élément actionnant aux extrémités intérieures des cylindres
F01M 1/04 - Lubrification sous pression utilisant la pression dans le cylindre de travail dans le carter pour actionner les dispositifs d'alimentation en lubrifiant
F01B 31/10 - Systèmes de lubrification des machines à vapeur
93.
Low pressure rise rate pilot operated poppet relief valve
A relief valve for a hydraulic machine that combines a poppet valve assembly and a pilot valve assembly together using a connector pin wherein internal fluid passageways within the poppet and pilot spools provide a fluid flow path between the inlet of the valve and a cavity disposed between the poppet and pilot. As a result of the internal passageways fluid is metered to the interior cavity to provide additional control and stability within the relief valve.
The invention relates to a hydrostatic transmission having two bent axis- or swashplate-type axial piston units which are operated alternately as a pump and as a motor, with the two axial piston units being adjustable together with a pivotable dual yoke or by means of a pivotable dual swashplate. In order to minimize the dead volumes of the two axial piston units, the rotational axes of the two axial piston power units are offset with respect to the pivot axis of the dual yoke or of the swashplate by a magnitude such that, at all pivot angles, the power unit pistons, at dead center, are located in the direct vicinity of the bore end of the cylinder block.
F16D 31/02 - Accouplements ou embrayages à fluide avec des groupes de pompage du type volumétrique, c.-à-d. dans lesquels passe un volume déterminé de liquide par tour de pompe utilisant des pompes à pistons ou à plongeurs travaillant dans des cylindres
F01B 13/04 - "Machines" ou machines motrices à piston alternatif avec cylindres tournants en vue d'obtenir le mouvement alternatif du piston à plus d'un cylindre
F01B 3/00 - "Machines" ou machines motrices à piston alternatif avec axes des cylindres coaxiaux, parallèles ou inclinés par rapport à l'axe de l'arbre principal
A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate.
F16K 21/10 - Obturateurs à fermeture automatique, c.-à-d. se fermant d'eux-même après fonctionnement dans lesquels le mouvement de fermeture, ralenti ou non, commence immédiatement après l'ouverture avec cylindre de frein hydraulique agissant sur l'élément de fermeture
An electronic traction control system for a vehicle having multiple hydraulic driven wheels includes a plurality of digital displacement pumps, a plurality of drive systems having counterbalance valves and motors used to drive wheels, and electronic flow control valves used in association with each drive assembly. Additionally the system has a steering mechanism that is electrically connected to a digital sensor and a proportional sensor that sends signals to a system controller that operates the functioning of the digital displacement hydraulic pumps.
B60K 17/356 - Agencement ou montage des transmissions sur les véhicules pour entraînement simultané des roues avant et arrière, p. ex. véhicules à quatre roues motrices comportant un moteur à fluide ou électrique pour entraîner une ou plusieurs roues
97.
Work vehicle steering system with flow-metering curve selection and associated method
A control device having an elongated shaft, a C-shaped magnet, and an anti-rotation pin. The magnet and the anti-rotation pin are encapsulated in a spherical member. The C-shaped magnet has opposing ends defining an open slot along the C-shaped main body. The anti-rotation pin extends through the slot and connects to the shaft.
A joystick device having a grip assembly pivotably connected to a base assembly. The base assembly having sensing elements that detect the movement of the grip assembly as it pivots about the base assembly. Disposed within the base assembly and the sensing elements is a microprocessor. The microprocessor verifies an output signal prior to transmitting to a remote controller.
G05G 9/047 - Mécanismes de commande manuelle équipés d'un seul organe de commande travaillant avec plusieurs organes commandés, p. ex. en sélection ou simultanément l'organe de commande étant manœuvré de différentes manières indépendantes, chacune de ces manœuvres individuelles entraînant un seul organe commandé dans lesquels la manœuvre de l'organe de commande peut être effectuée de plusieurs manières simultanément l'organe de commande étant manœuvré à la main autour d'axes orthogonaux, p. ex. manches à balai
G06F 3/033 - Dispositifs de pointage déplacés ou positionnés par l'utilisateurLeurs accessoires
100.
Axial piston machine having a device for the electrically proportional adjustment of the volumetric displacement
An axial piston machine having a swashplate or an oblique axis which can be adjusted by means of servopistons and has a valve segment and an adjustment unit for the electrically proportional adjustment of the volumetric displacement. The adjustment unit comprises proportional magnets which can be activated electrically, and a control piston for controlling the oil pressure which moves the servopistons. The proportional magnets act on the control piston along a common tappet axis, a feedback device for feeding back the current swashplate or oblique-axis valve-segment position to the control piston being provided. The feedback device comprises spring levers 6, 6′ which can pivot about an axis, the spring levers 6, 6′ each being mounted on the pivot axis 5 with a bearing shell 15, which are each composed of two component shells which support the spring lever 6, 6′ at separate locations on the pivot axis 5, and which each essentially enclose a half-space about the pivot axis 5.
