883results about "Rotary/oscillating piston combinations" patented technology

A linear actuator system includes a linear actuator and an integrated pump assembly connected to the linear actuator to provide fluid to operate the linear actuator. The integrated pump assembly includes a pump with two fluid drivers, each fluid driver comprising a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from a first port of the pump to a second port of the pump. The pump assembly also includes two valve assembles to isolate the pump from the system. The linear actuator system also includes a controller that establishes the pump in a normal mode of operation in which the prime movers are independently driven and switches to a fail-safe mode of operation in which only one prime mover is operated.

The invention discloses a pump body which comprises a pump shell, a pump cavity is formed in the pump shell, the pump shell is further provided with a liquid inlet and a liquid outlet which are communicated with the pump shell, and a driving gear and a driven gear which are meshed with each other are arranged in the pump cavity; the isolation hood is arranged on the end side of the pump shell, and a closed space is formed between the isolation hood and the end side of the pump shell; the inner magnetic assembly is arranged in the closed space and is in transmission connection with the driving gear through a driving shaft, and the driving shaft extends into the isolation hood from the pump shell; the outer magnetic assembly is arranged on the periphery of the inner magnetic assembly and is in transmission connection with the motor; wherein the inner magnetic assembly comprises an annular inner magnetic framework, a first magnet arranged on the periphery of the inner magnetic framework and an injection molding outer carrying frame wrapping the peripheries of the inner magnetic framework and the first magnet, a connecting hole used for being matched with the driving shaft is formed in the center of the injection molding outer carrying frame, and a cavity used for containing the inner magnetic framework and the first magnet is formed in the injection molding outer carrying frame; and the cavity is annularly arranged at the periphery of the connecting hole.

The invention discloses an integrated servo motor pump based on an internal gear pump, and relates to the field of integrated servo motor pumps, the integrated servo motor pump comprises a shell, an end cover, a servo motor, a bidirectional internal gear pump and a rotating speed sensor, the servo motor and the bidirectional internal gear pump are both arranged in the shell, one end of a motor shaft of the servo motor is connected with a pump shaft of the bidirectional internal gear pump through a spline, so that the motor shaft can drive the pump shaft to rotate together; the end cover is connected to one end of the shell, the rotating speed sensor is connected to the end cover, and a sensor shaft of the rotating speed sensor penetrates through the end cover to be in interference connection with the other end of the motor shaft. And the targets of low noise, high power density and large-range dynamic regulation of the rotating speed are achieved.

A pump assembly includes an axial gap motor including a first stator, a motor rotor and a motor shaft, and a first pump including a first pump rotor configured to be rotated by the motor rotor. The first stator includes a first yoke having an annular shape and a plurality of first teeth disposed on a first surface of the first yoke. The first pump is disposed in a first internal space surrounded by the plurality of first teeth.

The invention discloses a variable speed brushless motor methanol pump, comprising a methanol pump and a brushless motor, wherein the brushless motor is integrated in the methanol pump and drives the methanol pump to work, the control board of the brushless motor is integrated in the methanol pump to control the brushless motor to work, and the output end of the brushless motor drives the rotating parts of the methanol pump to work; an oil outlet connector, an oil inlet connector and a connector are provided on the methanol pump, the connector is electrically connected to the control board of the brushless motor, the control board is connected to the engine crankshaft signal, and the engine crankshaft signal is converted to control the rotation of the brushless motor; or the control board is connected to the ECU using a CAN communication method to send a signal, and the ECU uses a CAN communication method to send a signal to control the rotation of the brushless motor. The invention can make the oil delivery pump change the output flow and pressure, and maintain a relatively high pressure of 12 bar to weaken the pipeline-level fuel filter resistance, which can meet the requirements of the injection pump with large flow.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

Screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow through the flow chamber from the inlet to the outlet; and a flexible coupling (11) connected to one of the screws to couple the screw to a drive motor (10).

An electronic oil pump comprises a first rotor assembly, a stator assembly, an electronic control board assembly, an isolating member and a heat conductor, wherein the first rotor assembly is located in the first cavity of the electronic oil pump; the heat conductor comprises a first part and a second part, the first part is located in the second cavity of the electronic oil pump, and the second part is located in the third cavity of the electronic oil pump; the electronic control board assembly comprises a substrate and a temperature sensing unit, the substrate comprises a first hole, an upper plate layer, a lower plate layer and at least one metal layer, and part of the second part is located in the first hole; the temperature sensing unit is located on one side of the second part, and there is a preset distance between the temperature sensing unit and the second part; the metal layer closest to the temperature sensing unit is defined as the nearest metal layer, and the temperature sensing unit is projected in a direction parallel to the upper surface of the nearest metal layer, and at least part of the projection of the temperature sensing unit is located in the nearest metal layer, and the temperature sensing unit can detect the temperature of the nearest metal layer or the temperature sensing unit can detect the temperature of the upper plate layer or the lower plate layer in contact with the nearest metal layer; this is conducive to simplifying the system structure.

The invention is suitable for the technical field of water pumps, and provides a stable heat dissipation energy-saving water pump which comprises a pump body, a water inlet pipe, a water outlet pipe, a pump cover, a water pump motor, a main shaft and a suction structure and further comprises an auxiliary heat dissipation structure, the auxiliary heat dissipation structure comprises a connecting assembly, a discharge and suction assembly and an adjusting assembly, and the connecting assembly comprises a connecting pipe A, a mounting cylinder and a longitudinal pipe. According to the energy-saving water pump capable of stably dissipating heat, the water pump normally carries out water pumping and draining operation and drives the auxiliary heat dissipation structure through water flow of the water pump, so that the flow direction and the flow speed of air around the heat dissipation fins can be changed through flowing of a water source, and the heat exchange efficiency and the heat exchange quality of the heat dissipation fins and external gas are improved; no extra driving source needs to be added, dependence on external energy is reduced, and therefore stable heat dissipation, energy conservation and efficiency improvement of the water pump are achieved, and the device is suitable for water pumps of various types and specifications and has high universality and flexibility.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; and at least two screws (4, 5, 6) housed in the flow chamber to 5 force a fluid flow through the flow chamber from the inlet to the outlet; wherein the casing (3) comprises a shell (33) within which an insert (34) defining the flow chamber is housed.

The electric pump comprises an electric control assembly, the electric pump is provided with a first cavity, the electric pump is provided with a cavity inflow channel and a cavity outflow channel, the cavity inflow channel and the cavity outflow channel communicate with the first cavity, the electric control assembly comprises a temperature detection unit and a circuit board, and the temperature detection unit is electrically connected with the circuit board. In the projection of the cavity inflow channel on the first surface and the projection of the cavity outflow channel on the first surface, the projection relatively close to the central axis of the electric pump is a first projection, the projection relatively far away from the central axis of the electric pump is a second projection, and the maximum distance from the center of the first projection to the second projection is a first distance; the temperature detection unit is located in a circular area with the center of the first projection as the circle center and the first distance as the radius. Or the circuit board is provided with a diversion hole, the diversion hole penetrates through the first surface and the second surface, and a gap is formed between the temperature detection unit and the diversion hole. The device has the characteristic of accurately detecting the temperature of the working medium.

The utility model relates to the field of hydraulic pressure, and discloses an electro-hydraulic power device and operation equipment. The motor pump is arranged in the shell assembly and comprises a motor, a motor driver and a hydraulic pump driven by the motor; the heat dissipation assembly is provided with a heat dissipation oil cavity, first heat dissipation fins, second heat dissipation fins and a reinforced heat dissipation module, the heat dissipation oil cavity is formed in the shell assembly and can dissipate heat for the motor and the hydraulic pump, the first heat dissipation fins are connected to the shell assembly and can dissipate heat for the heat dissipation oil cavity, and the second heat dissipation fins are connected to the shell assembly and can dissipate heat for the motor driver; the reinforced heat dissipation module is connected to the shell assembly and at least can dissipate heat for the heat dissipation oil cavity. The electro-hydraulic power device is excellent in heat dissipation performance, high in working performance and long in service life, can be used as an independent power device with efficient heat dissipation performance, and is higher in practicability compared with an existing integrated electric drive hydraulic power source.

The utility model provides a composite spherical pump which comprises a stator, a first spherical inner cavity and a second spherical inner cavity which are arranged up and down are arranged in the stator, and a first spherical rotor and a second spherical rotor are arranged in the first spherical inner cavity and the second spherical inner cavity respectively. The stator is provided with a first liquid suction hole and a first liquid discharge hole which are communicated with the first spherical inner cavity, and is also provided with a second liquid suction hole and a second liquid discharge hole which are communicated with the second spherical inner cavity; a driving shaft of the first spherical rotor is connected with a second spherical rotor; a driving shaft of the second spherical rotor extends out of the lower part of the stator and is connected with a driving part; the composite spherical pump provided by the utility model is used for simultaneously sucking two media which are easy to react, the mixing proportion of the two media can be accurately controlled, the two media can be prevented from reacting due to internal leakage in different cavities, and meanwhile, the composite spherical pump is small and exquisite in structure and can save the installation space; on the other hand, the torque fluctuation of the driving motor is small and the torque peak is reduced.

The cycloid rotor electronic pump (1) according to the invention allows an electric motor (9) to be integrated into the cycloid rotor electronic pump (1) by forming permanent magnets (7) on the outer circumference (6) of an external gear (2) which can be surrounded on the outside by a stator (10) in order to form the electric motor (9). As a result, an additional connection between the electric motor (9) and the cycloidal rotor electronic pump (1) can be omitted, such that axial installation space and cost are saved. At the same time, the external gear (2) and the internal gear (3) act as a transmission, via which additional elements (not shown here) can be driven via a drive shaft (11) connected to the internal gear (3) in a rotationally fixed manner.

An electronic oil pump includes a first rotor assembly, a stator assembly, an electric control board assembly, an isolation member and thermal conductive members; the first rotor assembly is located in a first chamber of the electronic oil pump, the thermal conductive members each comprise a first portion and a second portion, the first portions being located in a second chamber of the electronic oil pump, the second portions being located in a third chamber of the electronic oil pump; the electric control board assembly includes a base plate and a temperature-sensing unit, the base plate including first holes, an upper plate layer, a lower plate layer and at least one metal layer, a part of the second portions being located in the first holes; the temperature-sensing unit is located at one side of the second portion, there is a preset distance between the temperature-sensing unit and the second portion.

To provide a permanent magnet embedded motor in which occurrence of a local stress can be suppressed or prevented and a firm structure can be obtained without causing an increase in processing cost and complication or upsizing of a housing structure, etc., and a pump device using the motor as a drive source.SOLUTION: A permanent magnet embedded motor includes: a stator St including a stator core 20 formed into a ring shape by layering a plurality of steel plates Sp which are obtained by punching a rolled steel plate material and a coil 40 for excitation; a rotor Rt disposed inside the stator and including a permanent magnet 60; and a metal housing 1 including a cylindrical fitting recess 1b centered on a prescribed axis S so as to be fit with the stator. The stator St is shrinkage fitted to the housing while a rolling direction Rd of the steel plates is set in an expansion direction Ed in which a change amount of an inner diameter D of the fitting recess 1b is large when the housing is heated.SELECTED DRAWING: Figure 17

This submerged electric pump device for a construction machine is mounted on a construction machine, and comprises: an electric pump unit including a hydraulic pump that discharges a working fluid when a drive shaft rotates, and an electric motor that rotationally drives the drive shaft; and a tank that stores the working fluid discharged from the hydraulic pump and that is disposed upright in a first direction. The electric pump unit is provided in the tank such that the hydraulic pump and the electric motor are aligned in the first direction and the hydraulic pump is submerged in the working fluid in the tank.

The invention provides an electronic oil pump, which belongs to the technical field of oil pumps, and comprises: a pump cover, which is provided with an oil inlet and a first oil inlet channel; the motor shell is provided with a motor cavity and an oil return channel; the motor assembly comprises a motor shaft, the motor shaft is rotatably connected with the motor shell, the motor shaft is provided with a second oil inlet channel in the axial direction of the motor shaft, and the oil inlet communicates with the motor cavity through the first oil inlet channel and the second oil inlet channel; and the rotor assembly is located between the pump cover and the motor shell, an oil passing channel is formed in the rotor assembly, and the motor cavity communicates with the oil inlet through the oil return channel and the oil passing channel. The electronic oil pump has the beneficial effects that low-temperature oil enters through the oil inlet, high-temperature oil returns through the oil return channel, double-face oil suction is achieved, the volume efficiency of the electronic oil pump at the high rotating speed is improved, the circulating flow is large, and the cooling effect on the motor assembly and the controller is good.

A cycloid rotor pump with an improved pump body structure comprises a pump body, a pump cover, a stator assembly, a rotor, a rotor shell, an inner rotor and an outer rotor, the stator assembly comprises an iron core, a framework, an enameled wire and an inserting piece, the rotor shell comprises a main body part and a surrounding edge part, an axial through shaft hole is formed in the center of the main body part, and an axial through liquid inlet hole is formed in the radial outer side of the shaft hole. The pump body is formed by placing the stator assembly and the rotor shell as inserts in the mold cavity in an injection molding mode, the side, facing the rotor, of the main body part is provided with a first positioning part for preventing the rotor shell from rotating in the mold cavity, and the iron core is provided with a second positioning part for preventing the stator assembly from rotating in the mold cavity. The plastic of the pump body wraps the framework, the enameled wire, the iron core and the periphery of the rotor shell and forms an installation cavity for containing the rotor, and at least the first positioning part, the second positioning part and the tooth part end face of the side, back to the rotor shell, of the iron core are exposed out of the pump body. According to the cycloid rotor pump with the design, production of the pump body is facilitated, and meanwhile the stability of the pump body is considered.

The embodiment of the present application provides a control method, a hybrid power system and a controller for a hybrid power system. The hybrid power system includes a through-shaft gear pump, the through-shaft gear pump includes a first input end and a second input end, the first input end is connected to the first branch, and the second input end is connected to the second branch. The method includes: when the first input end of the through-shaft gear pump is connected to the first branch, the first output torque of the engine and the remaining power of the power battery are obtained in real time; when the first output torque and the remaining power meet the first preset condition, the second input end of the through-shaft gear pump is controlled to be connected to the second branch; the second output torque of the motor is adjusted to change the first output torque to improve the fuel consumption rate of the engine. The present invention realizes flexible matching of motor models, effectively reduces costs, and realizes two-way power transmission from the engine and the motor to the through-shaft gear pump by introducing a through-shaft gear pump including two input ends.

A fluid pump includes a housing. A delivery portion includes a delivery pump element disposed within the housing. A return portion includes a return pump element disposed within the housing. A motor is disposed within the housing that drives the delivery pump element and the return pump element via a drive shaft. The delivery portion is configured to deliver fluid from a reservoir to a drive unit. The return pump element is configured to deliver the fluid from a sump assembly of the drive unit to the reservoir.

The invention discloses an active suspension electro-hydraulic pump assembly, a chassis axle and a chassis system for a vehicle, an integrated motor shell and a controller cover plate are arranged, the integrated shell is provided with motor cavities located at the two ends in the axial direction, and the two motor cavities are respectively provided with two motors and corresponding hydraulic pumps; the controller cover plate covers the circuit board mounting surface of the integrated motor shell to form the controller cavity for mounting the circuit board, and only the sealant is arranged between the controller cover plate and the circuit board mounting surface for connection, so that the assembly process of the electro-hydraulic pump assembly is reconstructed and simplified; the design that the double motors are fixedly connected through bolts and the technology that the double motors are sealed through sealants are avoided, the overall road surface vibration resisting function of the product is improved, and the sealing reliability of the controller cavity of the product is improved.

The utility model discloses a multi-stage internal spiral pump driven by a hole type servo motor, which belongs to the technical field of spiral pumps, a stator is matched with a rotor to realize that the rotor drives a rotating sleeve to rotate in a mounting cavity, and when the rotating sleeve and the rotor synchronously rotate, a spiral cavity is formed between a spiral blade in a liquid conveying hole of an internal spiral sleeve and a core shaft; liquid flows from the liquid inlet hole to the circulation hole through the spiral cavity, and then flows to the liquid outlet hole from the circulation hole; the stator and the rotor of the motor, the rotating sleeve related to the screw pump, the inner spiral sleeve and the mandrel are integrated together to form the inner spiral pump of a special structure, the structure of the spiral pump is more compact, the size of the spiral pump is small, the spiral blades are arranged on the inner side wall of the liquid conveying hole of the inner spiral sleeve, and the rotor drives the rotating sleeve and the inner spiral sleeve to rotate. Compared with a conventional pump shaft, the inner spiral sleeve can bear larger twisting force, high-speed liquid conveying of the inner spiral pump is facilitated, and a high-speed high-pressure power source composed of a stator and a rotor can be adapted.

The invention relates to the field of motor pumps, in particular to a duplex-winding low-voltage motor pump. The double-low-pressure integrated controller and the hydraulic steering pump are connected to the two ends of the driving motor respectively. The driving motor comprises a double-winding stator assembly and a rotor assembly rotationally arranged on the inner side of the double-winding stator assembly, the input end of the hydraulic steering pump is connected with the rotor assembly, the hydraulic steering pump is provided with an oil inlet and an oil outlet, the double-low-pressure integrated controller comprises two sub-controllers, the double-winding stator assembly comprises two sets of stator coil windings, and the double-winding stator assembly comprises two sets of stator coil windings. And the two sub-controllers are respectively in control connection with the two sets of stator coil windings. The hydraulic steering pump is provided with the two sets of stator coil windings capable of running simultaneously or independently, when one set of stator coil winding breaks down, the other set of stator coil winding can be kept in the running state, the hydraulic steering pump is effectively driven by driving the rotor assembly to provide hydraulic steering assistance for a vehicle, and driving safety is guaranteed.

The invention relates to a motor pump, and relates to the field of automobile active suspension technology application. The motor pump comprises a controller module, a motor module and a pump module, the controller module is used for sending a driving signal to the motor module so as to drive the pump module; the controller module comprises a controller shell and a controller assembly; the motor module comprises a motor shell and a motor assembly; the pump module comprises a pump cover and a pump body; the controller assembly is electrically connected with the motor assembly; the motor assembly is connected to the pump body; the pump body is located in the motor shell, the pump cover protrudes out of the motor shell, and the pump module is coaxially connected with the motor module. The controller housing is stacked with the motor housing. A flowing oil way of a pump head leakage medium is optimally designed, more hydraulic oil flows through a rotor cavity to take away heat of the motor and finally flows to a pump head low-pressure oil cavity through a one-way valve, the heat dissipation effect is improved, and the working duration and the service life of the motor pump are prolonged.

The invention provides a composite spherical pump which comprises a stator, a first spherical inner cavity and a second spherical inner cavity which are arranged up and down are formed in the stator, and a first spherical rotor and a second spherical rotor are arranged in the first spherical inner cavity and the second spherical inner cavity respectively; the stator is provided with a first liquid suction hole and a first liquid discharge hole which are communicated with the first spherical inner cavity, and is also provided with a second liquid suction hole and a second liquid discharge hole which are communicated with the second spherical inner cavity; a driving shaft of the first spherical rotor is connected with a second spherical rotor; a driving shaft of the second spherical rotor extends out of the lower part of the stator and is connected with a driving part; the composite spherical pump is used for simultaneously sucking two media easy to react, the mixing proportion of the two media can be accurately controlled, the situation that the two media react due to internal leakage can be avoided when the two media are in different containing cavities, meanwhile, the structure is small and exquisite, and the installation space can be saved; on the other hand, the torque fluctuation of the driving motor is small and the torque peak is reduced.

The utility model relates to an electronic oil pump with an immersed cooling driver. The electronic oil pump comprises a shell, a PCBA (printed circuit board assembly), a driving part and an inner and outer rotor assembly, wherein the PCBA and the driving part are arranged in the shell; the inner and outer rotor assembly is connected with an output shaft of the driving part; a conveying channel is formed in the output shaft, and a conveying channel oil inlet, an oil suction port and an oil discharge port are formed in the shell. The brushless direct current motor drives the inner rotor assembly and the outer rotor assembly to operate to generate negative pressure, oil is sucked in through the oil inlet and the oil suction port of the conveying channel under the action of the negative pressure, and the oil sucked in through the oil inlet of the conveying channel is conveyed into the controller shell through the conveying channel so that the brushless direct current motor and the PCBA can be cooled. Oil sucked through the oil suction port enters the pump shell to cool the brushless direct current motor, then oil in the controller shell and the pump shell flows back to the oil discharge port to be discharged, the PCBA and the brushless direct current motor can be fully cooled through the oil, and the heat dissipation performance is improved.

An electric pump system and method of operating the same involves pumping a fluid through a fluid passageway defined in a mechanical pump from a pump inlet to a hollow shaft of a motor, through the hollow shaft to an internal motor cavity defined by a housing of the motor, and through another fluid passageway defined in the motor housing and mechanical pump that leads to a pump outlet. The system and method further involve pumping the fluid through another fluid passageway defined in the mechanical pump from yet another pump inlet to the pump outlet. The temperature of fluid exiting the hollow shaft can be assessed and used by an electronic control unit (ECU) of the electric pump system to control the same. The electric pump system can be part of a cooling and lubrication system for an electric vehicle transmission, gearbox, differential or transfer case, for example.