Lifting oil pump assembly

Abstract

An oil pipeline is fixedly installed in an oil way module, a third oil outlet way and a fourth oil outlet way are arranged in the oil pipeline, the third oil outlet way is communicated with a first oil outlet way, the fourth oil outlet way is communicated with a second oil outlet way, the oil pipeline is provided with a supercharging device, and the supercharging device is in linkage connection with a motor. The motor rotates positively and negatively to drive centrifugal force generated by the supercharging device to enable one of the third oil outlet way and the fourth oil outlet way to discharge oil and the other oil suction way to be linked with one-way conduction of the reversing valve, the first oil outlet way and the second oil outlet way are communicated with the two ends of the reversing part respectively, and the third oil outlet way and the fourth oil outlet way are communicated with the first oil outlet way and the second oil outlet way respectively. When the motor rotates, the piston generates piston motion in the eccentric bearing, so that oil flows out of the oil outlet groove at one end of the oil way, the oil outlet groove at the other end absorbs oil through suction force generated by rotation of the motor, force generated by forward rotation and reverse rotation of the motor is opposite, and the oil outlet oil way and the oil inlet oil way are opposite to control rising and falling of an externally connected oil pump.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting oil pumps, in particular to a lifting oil pump assembly. Background Art

[0002] The lifting oil pump is usually installed in the lifting device on the front of the truck. Its function is to lift the cab when repairing automobile engine and other parts, provide lifting power for the front of the truck, so that the front of the truck can be raised or lowered. This lifting device is usually used for truck maintenance, loading and unloading of goods or other occasions where the front of the truck needs to be raised. The truck front lifting oil pump transports hydraulic oil to the lifting cylinder through the hydraulic system, pushing the piston to raise or lower the front of the truck.

[0003] The publication number is: CN117267078A discloses a cab lifting oil pump and a lifting drive device, which relates to the technical field of lifting oil pumps. The device includes: an oil tank, which is provided with an oil pool; a motor module, which is installed on the side of the oil tank, and the motor shaft of the motor module partially extends into the oil pool; an oil pump module, which is installed in the oil pool, and the oil pump module is connected to the motor shaft; a pump body module, which is arranged between the motor module and the oil tank, and a reversing part is provided in the pump body module.

[0004] The lifting oil pump assembly integrates the oil pump module, pump body and motor together, but the reversing handle is required to change the direction, which limits the installation position of the lifting oil pump assembly. The lifting oil pump assembly needs to be installed within the operator's operable range to achieve the purpose of reversing, and the reversing handle is used for reversing at the same time. The reversing method is complicated and needs to be manually performed during reversing. Therefore, this technology still has room for modification. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a lifting oil pump assembly in view of the deficiencies of the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lifting oil pump assembly, comprising an oil tank, a motor, and an oil circuit module, wherein the oil tank is detachably connected to the oil circuit module, the motor is installed on one side of the oil circuit module, a reversing valve is arranged in the oil circuit module, the oil circuit module comprises a first oil outlet and a second oil outlet, the first oil outlet and the second oil outlet are respectively communicated with two ends of the reversing valve, the reversing valve is also connected to an oil inlet pipeline communicated with the oil tank, and is characterized in that: an oil delivery pipeline is fixedly installed in the oil circuit module, a third oil outlet and a fourth oil outlet are arranged in the oil delivery pipeline, the third oil outlet is communicated with the first oil outlet, the fourth oil outlet is communicated with the second oil outlet, a booster is arranged at one end of the oil delivery pipeline, one side of the booster is linked to the motor, the centrifugal force generated by the forward and reverse rotation of the motor drives the booster to cause one of the third oil outlet and the fourth oil outlet to discharge oil and the other to absorb oil, and the linkage reversing valve is unidirectionally connected.

[0007] By adopting the above technical scheme, the first oil outlet and the second oil outlet are respectively communicated with the two ends of the reversing part, and the third oil outlet and the fourth oil outlet are respectively communicated with the first oil outlet and the second oil outlet. When the motor rotates forward, the booster device causes the oil to be sucked into the reversing valve through the oil inlet pipe and flow to the fourth oil outlet. The centrifugal force of the motor and the flow of oil cause one end of the third oil outlet of the reversing valve to be closed. At this time, the oil is sucked in through the fourth oil outlet and discharged from the third oil outlet, so that the externally connected hydraulic cylinder rises; when the motor reverses, the motor reverses and generates a reverse centrifugal force through the booster device, causing the oil to be sucked in from the third oil outlet. The centrifugal force of the motor and the flow of oil cause one end of the fourth oil outlet of the reversing valve to be closed, and the oil is sucked in through the third oil outlet and discharged from the fourth oil outlet, so that the externally connected hydraulic cylinder falls. The motor is connected to the booster device to cause the oil pressure of the third oil outlet and the fourth oil outlet to separately discharge oil and push the reversing valve to control. No manual reversing is required during reversing, the reversing method is simple, and the installation position of the lifting oil pump assembly does not need to be considered.

[0008] The above-mentioned lifting oil pump assembly can be further configured as follows: the boosting device includes an annular member, a bearing, and a piston; the annular member is rotatably arranged on the oil pipeline; the oil pipeline is provided with at least two oil outlet grooves communicating with the third oil outlet and the fourth oil outlet; the annular member is provided with at least two piston holes at the oil outlet groove; the piston holes are installed in cooperation with the piston clearance; the bearing is fixedly connected to the oil circuit module by setting an eccentric structure; the bearing sleeve is arranged on the annular member; and the bottom of the bearing sleeve is linked to the motor.

[0009] By adopting the above technical scheme, the annular member is provided with at least two piston holes at the oil outlet groove, and a piston is installed in the piston hole. When the motor rotates, the piston generates piston movement in the eccentric bearing. The rotation of the annular member generates centrifugal force to open the piston on one side to inlet oil, and the piston on the other side abuts against the inner wall of the bearing, so that the piston can perform axial piston movement to increase the pressure. At the same time, the oil circuit can keep discharging oil from the oil outlet groove at one end, and the oil outlet groove at the other end absorbs oil through the suction force generated by the rotation of the motor. The forces generated when the motor rotates forward and reverse are opposite, which makes the oil outlet and oil inlet oil circuits opposite, thereby controlling the rise and fall of the externally connected oil pump.

[0010] The above-mentioned lifting oil pump assembly can be further configured as follows: the motor includes a shaft body, the eccentric structure includes an installation cavity eccentric to the shaft body arranged in the oil circuit module, and the annular member is located at the bottom of the bearing and is sleeved with a snap-fit ​​member, and the snap-fit ​​member causes the bearing to be limitedly installed in the installation cavity.

[0011] By adopting the above technical solution, an installation cavity eccentric to the shaft is provided in the oil circuit module, and the bearing is eccentrically installed in the installation cavity by means of a snap-fit ​​part. When the motor rotates, the annular part coaxial with the motor shaft can produce eccentric movement in the eccentric bearing, so that the piston installed on the annular part can perform axial piston movement by abutting against the bearing and the centrifugal force generated by the motor, thereby pressurizing and controlling the oil in the oil pump.

[0012] The above-mentioned lifting oil pump assembly can be further configured as follows: an abutment groove is provided in the installation cavity, an abutment plate abutting against the abutment groove is provided at the top of the annular member, and a pipeline cavity for installing the oil pipeline is provided in the abutment groove.

[0013] By adopting the above technical solution, a pipeline cavity specifically used for installing the oil pipeline is provided in the installation cavity. Such a layout makes more effective use of the space inside the oil circuit module, making the entire device more compact. By providing abutment grooves and abutment plates, positioning and assembly between components can be quickly achieved, simplifying the assembly process.

[0014] The above-mentioned lifting oil pump assembly can be further configured as follows: a connecting end connected to a power supply motor is provided at the bottom of the annular member, the connecting end is provided with a plurality of connecting grooves, a connecting member is installed in the connecting groove, and the connecting member is provided with a plug hole for plugging into the motor shaft.

[0015] By adopting the above technical solution, a connecting end and a connecting groove are set at the bottom of the ring part, and the connecting part and its plug-in hole are matched, a stable and reliable mechanical interface is provided, so that the motor can drive the ring part to rotate forward and reverse. The design of the connecting part makes the assembly of the motor and the oil pump simple and quick. It only needs to insert the connecting part into the corresponding connecting groove and connect it to the motor shaft through the plug-in hole, which greatly improves the assembly efficiency.

[0016] The above-mentioned lifting oil pump assembly can be further configured as follows: a terminal cavity is provided in the oil tank, a connecting terminal for controlling the forward and reverse rotation of the motor is installed in the terminal cavity, the connecting terminal is electrically connected to a plurality of plug connectors, and the terminal cavity is provided with an installation hole for installing the plug connectors.

[0017] By adopting the above technical solution, a terminal cavity is set in the oil tank for installing the connecting terminal that controls the forward and reverse rotation of the motor, thereby realizing the integration of the control system and simplifying the overall structure. Through the electrical connection between the plug connector and the connecting terminal, a convenient electrical interface is provided, which facilitates the connection of the power supply wiring and the control circuit of the motor. Installing the electrical components in a specially designed cavity in the oil tank helps to protect these components from the influence of the external environment, such as liquid erosion, dust pollution, etc., thereby improving the safety and reliability of the system.

[0018] The above-mentioned lifting oil pump assembly can be further configured as follows: the oil circuit module is provided with an oil outlet hole communicating with the first oil outlet circuit and the second oil outlet circuit, the oil outlet hole is connected with a connecting nozzle connected with an external oil cylinder, and one side of the oil circuit module is also provided with a refueling hole communicating with the oil tank, and the refueling hole is connected with a refueling nozzle.

[0019] By adopting the above technical solution, by directly setting the oil outlet hole and the refueling hole on the oil circuit module and equipping it with a connecting nozzle and a refueling nozzle, the connection of the external pipeline can be simplified and the risk of system leakage can be reduced. The special refueling hole and refueling nozzle make it more convenient and quick to add oil to the oil tank, while avoiding oil contamination and overflow.

[0020] The above-mentioned lifting oil pump assembly can be further configured as follows: the motor is surrounded by a mounting end, the oil circuit module is provided with a mounting groove for mounting the mounting end, the mounting groove and the mounting end are both provided with fixing holes, and fixing bolts are installed in the fixing holes.

[0021] By adopting the above technical solution, the mounting end surrounding the motor cooperates with the mounting groove on the oil circuit module, and a firm connection is achieved through fixing holes and fixing bolts. The design of the mounting end and the mounting groove simplifies the assembly process between the motor and the oil circuit module. The installation can be completed by simply aligning the fixing holes and inserting the fixing bolts. The guiding effect of the mounting end and the mounting groove and the position accuracy of the fixing holes help ensure the correct positioning of the motor and reduce errors during the installation process.

[0022] The beneficial effects of the utility model are as follows: the first oil outlet passage and the second oil outlet passage are respectively communicated with the two ends of the reversing part, the third oil outlet passage and the fourth oil outlet passage are respectively communicated with the first oil outlet passage and the second oil outlet passage; when the motor rotates, the piston generates piston movement in the eccentric bearing, which can keep the oil passage discharging oil from the oil outlet groove at one end, and the oil outlet groove at the other end absorbs oil through the suction force generated by the rotation of the motor; the forces generated when the motor rotates forward and reverse are opposite, which causes the oil outlet and oil inlet passages to be opposite, thereby controlling the rise and fall of the externally connected oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 It is an exploded view of the structure of the utility model;

[0025] Figure 3 This is a cross-sectional view of the oil pipeline of the utility model;

[0026] Figure 4 This is a cross-sectional view of the oil circuit module of the utility model;

[0027] Figure 5 This is a bottom structural diagram of the oil circuit module of the utility model;

[0028] Figure 6 This is an exploded view of the ring structure of the utility model;

[0029] Figure 7 This is a side view of the oil circuit module of the utility model;

[0030] Label Notes: 1-Oil tank, 2-Motor, 3-Oil circuit module ， 4- reversing valve, 5- first oil outlet, 6- second oil outlet ， 7-Oil inlet pipeline ， 8-Oil pipeline ， 9-the third oil outlet, 10-the fourth oil outlet ， 11-ring, 12-bearing, 13-piston, 14-piston hole, 15-oil outlet groove, 16-clamp, 17-abutment groove ， 18-butt plate, 19-pipe cavity, 20-connection end ， 21-Connection slot ， 22-Connectors ， 23-plug hole, 24-terminal cavity, 25-connection terminal, 26-plug connector, 27-mounting hole, 28-oil outlet hole, 29-connection nozzle, 30-oil filling hole ， 31-Fuel nozzle ， 32-Mounting end ， 33 - Mounting slot ， 34 -Fixing holes ， 35 - Fixing bolt, 201-shaft body, 301-installation cavity. DETAILED DESCRIPTION

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0032] like Figure 1-4 The utility model provides the following technical solution: a lifting oil pump assembly, including an oil tank 1, a motor 2, and an oil circuit module 3. The oil tank 1 is detachably connected to the oil circuit module 3. The motor 2 is installed on one side of the oil circuit module 3. A reversing valve 4 is arranged in the oil circuit module 3. The oil circuit module 3 includes a first oil outlet 5 and a second oil outlet 6. The first oil outlet 5 and the second oil outlet 6 are respectively connected to the two ends of the reversing valve 4. The reversing valve 4 is also connected to an oil inlet pipeline 7 connected to the oil tank 1. The oil circuit module 3 is fixedly installed There is an oil pipeline 8, in which a third oil outlet 9 and a fourth oil outlet 10 are arranged, the third oil outlet 9 is communicated with the first oil outlet 5, the fourth oil outlet 10 is communicated with the second oil outlet 6, a booster device is arranged at one end of the oil pipeline 8, one side of the booster device is linked to the motor 2, the centrifugal force generated by the forward and reverse rotation of the motor 2 drives the booster device to cause one of the third oil outlet 9 and the fourth oil outlet 10 to discharge oil and the other oil outlet 10 to absorb oil, and the linkage reversing valve 4 is unidirectionally connected, the first oil outlet 5 、 The second oil outlet 6 is connected to both ends of the reversing part. ， The third oil outlet 9 and the fourth oil outlet 10 are connected to the first oil outlet 5 respectively. 、 The second oil outlet 6 is connected. When the motor 2 rotates forward, the booster device causes the oil to be sucked into the reversing valve 4 through the oil inlet pipe 7 and flows to the fourth oil outlet 10. The centrifugal force of the motor 2 and the flow of oil cause one end of the third oil outlet 9 of the reversing valve 4 to be closed. At this time, the oil is sucked in through the fourth oil outlet 10 and discharged from the third oil outlet 9, so that the externally connected hydraulic cylinder rises; when the motor 2 reverses, the motor 2 reverses and generates a reverse centrifugal force through the booster device, causing the oil to be sucked in from the third oil outlet 9. The centrifugal force of the motor 2 and the flow of oil cause one end of the fourth oil outlet 10 of the reversing valve 4 to be closed, and the oil is sucked in through the third oil outlet 9 and discharged from the fourth oil outlet 10, so that the externally connected hydraulic cylinder falls. The motor 2 is connected to the booster device so that the oil pressure of the third oil outlet 9 and the fourth oil outlet 10 separately pushes the reversing valve 4 to control. No manual reversing is required during reversing, and the reversing method is simple. The installation of the lifting oil pump assembly does not need to consider the installation position. The booster device includes a ring member 11 、 Bearing 12 、 Piston 13 ，The ring member 11 is rotatably mounted on the oil pipeline 8 ， The oil pipeline 8 is provided with at least two third oil outlets 9 、 The oil outlet groove 15 communicated with the fourth oil outlet passage 10 ， The ring member 11 is provided with at least two piston holes 14 at the oil outlet groove 15. ， The piston hole 14 is installed with clearance fit with the piston 13, and the bearing 12 is fixedly connected to the oil circuit module 3 by setting an eccentric structure. The bearing 12 is sleeved on the annular member 11, and the bottom of the bearing 12 sleeve is linked with the motor 2. The annular member 11 is provided with at least two piston holes 14 at the oil outlet groove 15, and a piston 13 is installed in the piston 13 cavity. When the motor 2 rotates, the piston 13 generates piston 13 movement in the eccentric bearing 12. The rotation of the annular member 11 generates centrifugal force to open the piston 13 on one side to inlet oil, and the piston 13 on the other side abuts against the inner wall of the bearing 12, so that the piston 13 can have axial piston 13 movement to increase the pressure, and at the same time, the oil circuit can keep discharging oil from the oil outlet groove 15 at one end, and the oil outlet groove 15 at the other end absorbs oil through the suction generated by the rotation of the motor 2. The forces generated when the motor 2 rotates forward and reverse are opposite, which promotes the oil outlet and oil inlet. The oil circuit is opposite to control the rise and fall of the externally connected oil pump. The motor 2 includes a shaft 201. The eccentric structure includes a mounting cavity 301 eccentric to the shaft 201 set in the oil circuit module 3. The annular member 11 is located at the bottom of the bearing 12 and is sleeved with a snap member 16. The snap member 16 causes the bearing 12 to be limitedly installed in the mounting cavity 301. A mounting cavity 301 eccentric to the shaft 201 is provided in the oil circuit module 3. The bearing 12 is eccentrically installed in the mounting cavity 301 through the snap member 16. When the motor 2 rotates, the annular member 11 coaxial with the shaft 201 of the motor 2 can generate eccentric movement in the eccentric bearing 12, so that the piston 13 installed on the annular member 11 can rely on the abutment with the bearing 12 and the centrifugal force generated by the motor 2 to perform axial piston 13 movement, so as to pressurize and control the oil in the oil pump.

[0033] like Figure 5-7The lifting oil pump assembly shown in the figure has an abutment groove 17 in the installation cavity 301, an abutment plate 18 abutting the abutment groove 17 at the top of the ring 11, a pipe cavity 19 for installing the oil pipeline 8 in the abutment groove 17, and a pipe cavity 19 specially used for installing the oil pipeline 8 in the installation cavity 301. Such a layout makes more effective use of the space inside the oil circuit module 3 and makes the whole device more compact. By arranging the abutment groove 17 and the abutment plate 18, the positioning and assembly between components can be quickly realized, which simplifies the assembly process. A connecting end 20 connected to the power supply machine 2 is provided at the bottom of the ring 11, and the connecting end 20 is provided with a plurality of connecting grooves 21. A connecting member 22 is installed in the connecting groove 21, and the connecting member 22 is provided with a plug hole 23 plugged with the shaft 201 of the motor 2. By arranging the connecting end 20 and the connecting groove 21 at the bottom of the ring 11, and cooperating with the connecting member 22 and its plug hole 23, a stable and reliable mechanical interface is provided, so that the motor 2 can drive the ring 11 to rotate forward and reverse. The design of the connector 22 makes the assembly of the motor 2 and the oil pump simple and quick. It is only necessary to insert the connector 22 into the corresponding connecting groove 21 and connect it to the motor 2 shaft 201 through the plug hole 23, which greatly improves the assembly efficiency. A terminal cavity 24 is provided in the oil tank 1. A connecting terminal 25 for controlling the forward and reverse rotation of the motor 2 is installed in the terminal cavity 24. The connecting terminal 25 is electrically connected to a plurality of plug connectors 26. The terminal cavity 24 is provided with a mounting hole 27 for installing the plug connector 26. The terminal cavity 24 is provided in the oil tank 1 for installing the connecting terminal 25 for controlling the forward and reverse rotation of the motor 2, which realizes the integration of the control system and simplifies the overall structure. The electrical connection between the plug connector 26 and the connecting terminal 25 provides a convenient electrical interface, which facilitates the connection of the power supply wiring and the control circuit of the motor 2. Installing the electrical components in the specially designed cavity in the oil tank 1 helps to protect these components from the influence of the external environment, such as liquid erosion, dust pollution, etc., thereby improving the safety and reliability of the system. The oil circuit module 3 is provided with and The first oil outlet 5 and the second oil outlet 6 are connected to an oil outlet hole 28, and a connecting nozzle 29 connected to an external oil cylinder is connected to the oil outlet hole 28. A refueling hole 30 connected to the oil tank 1 is also provided on one side of the oil circuit module 3, and a refueling nozzle 31 is connected to the refueling hole 30. By directly arranging the oil outlet hole 28 and the refueling hole 30 on the oil circuit module 3, and equipping the connecting nozzle 29 and the refueling nozzle 31, the connection of the external pipeline can be simplified and the risk of system leakage can be reduced. The special refueling hole 30 and the refueling nozzle 31 are provided, so that it is more convenient and quick to add oil to the oil tank 1, and at the same time, oil pollution and overflow are avoided. The motor 2 is surrounded by a mounting end 32 ， The oil circuit module 3 is provided with a mounting groove 33 for mounting the mounting end 32, and both the mounting groove 33 and the mounting end 32 are provided with fixing holes 34. ， A fixing bolt 35 is installed in the fixing hole 34. ，The mounting end 32 surrounding the motor 2 cooperates with the mounting groove 33 on the oil circuit module 3, and a firm connection is achieved through the fixing hole 34 and the fixing bolt 35. The design of the mounting end 32 and the mounting groove 33 simplifies the assembly process between the motor 2 and the oil circuit module 3. The installation can be completed by simply aligning the fixing hole 34 and inserting the fixing bolt 35. The guiding function of the mounting end 32 and the mounting groove 33 and the position accuracy of the fixing hole 34 help to ensure the correct positioning of the motor 2 and reduce errors during the installation process.

[0034] Beneficial effects of the utility model: the first oil outlet 5 and the second oil outlet 6 are respectively connected to the two ends of the reversing part, and the third oil outlet 9 、 The fourth oil outlet 10 is communicated with the first oil outlet 5 and the second oil outlet 6 respectively. When the motor 2 rotates, the piston 13 generates piston 13 movement in the eccentric bearing 12, which can keep the oil circuit discharging oil from the oil outlet groove 15 at one end, and the oil outlet groove 15 at the other end absorbs oil through the suction force generated by the rotation of the motor 2. The forces generated when the motor 2 rotates forward and reverse are opposite, which causes the oil outlet and oil inlet oil circuits to be opposite, thereby controlling the rise and fall of the externally connected oil pump.

Claims

1. A lifting oil pump assembly, comprising an oil tank, a motor, and an oil circuit module, wherein the oil tank is detachably connected to the oil circuit module, the motor is mounted on one side of the oil circuit module, a reversing valve is arranged in the oil circuit module, the oil circuit module comprises a first oil outlet and a second oil outlet, the first oil outlet and the second oil outlet are respectively connected to two ends of the reversing valve, the reversing valve is also connected to an oil inlet pipeline connected to the oil tank, and is characterized in that: An oil pipeline is fixedly installed in the oil circuit module, and a third oil outlet and a fourth oil outlet are arranged in the oil pipeline. The third oil outlet is communicated with the first oil outlet, and the fourth oil outlet is communicated with the second oil outlet. A booster is arranged at one end of the oil pipeline, and one side of the booster is linked to a motor. The centrifugal force generated by the forward and reverse rotation of the motor drives the booster to cause one of the third and fourth oil outlets to discharge oil and the other to absorb oil, which is unidirectionally connected to the linkage reversing valve.

2. A lifting oil pump assembly according to claim 1, characterized in that: The boosting device includes an annular member, a bearing, and a piston. The annular member is rotatably arranged on the oil pipeline. The oil pipeline is provided with at least two oil outlet grooves communicated with the third oil outlet and the fourth oil outlet. The annular member is provided with at least two piston holes at the oil outlet grooves. The piston holes are installed in a clearance fit with the piston. The bearing is fixedly connected to the oil circuit module by arranging an eccentric structure. The bearing sleeve is arranged on the annular member, and the bottom of the bearing sleeve is linked to the motor.

3. A lifting oil pump assembly according to claim 2, characterized in that: The motor comprises a shaft body, the eccentric structure comprises a mounting cavity arranged in the oil circuit module and eccentric to the shaft body, the annular member is sleeved with a snap member at the bottom of the bearing, and the snap member enables the bearing to be limitedly installed in the mounting cavity.

4. A lifting oil pump assembly according to claim 3, characterized in that: An abutment groove is arranged in the installation cavity, an abutment plate abutting against the abutment groove is arranged at the top of the annular member, and a pipeline cavity for installing an oil pipeline is arranged in the abutment groove.

5. A lifting oil pump assembly according to any one of claims 2 to 4, characterized in that: The bottom of the annular member is provided with a connecting end for connecting to a power supply machine, the connecting end is provided with a plurality of connecting grooves, a connecting member is installed in the connecting groove, and the connecting member is provided with a plug-in hole for plugging with the motor shaft body.

6. A lifting oil pump assembly according to claim 1, characterized in that: A terminal cavity is provided in the oil tank, a connecting terminal for controlling the forward and reverse rotation of the motor is installed in the terminal cavity, the connecting terminal is electrically connected to a plurality of plug connectors, and a mounting hole for installing the plug connectors is provided in the terminal cavity.

7. A lifting oil pump assembly according to claim 6, characterized in that: The oil circuit module is provided with an oil outlet hole communicating with the first oil outlet circuit and the second oil outlet circuit, the oil outlet hole is connected with a connecting nozzle connected with an external oil cylinder, and one side of the oil circuit module is also provided with a refueling hole communicating with the oil tank, the refueling hole is connected with a refueling nozzle.

8. A lifting oil pump assembly according to any one of claims 1 to 4, characterized in that: The motor is surrounded by a mounting end, the oil circuit module is provided with a mounting groove for mounting the mounting end, the mounting groove and the mounting end are both provided with fixing holes, and fixing bolts are installed in the fixing holes.

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