Bidirectional oil pump structure of automobile transmission

Abstract

The invention belongs to the field of automobile transmission lubrication, and discloses an automobile transmission two-way oil pump structure which comprises a shell, an oil suction port end cover is arranged at one end of the shell through a bolt, an oil outlet end cover is arranged at the other end of the shell through a bolt, a transmission device is movably arranged on the inner wall of the shell, and a plugging device is movably arranged on the inner wall of the shell. The problem that in the prior art, stable supply of lubricating oil cannot be guaranteed possibly under complex working conditions such as frequent advancing and retreating of a vehicle, and then the performance of a transmission is affected is solved. Meanwhile, a lubricating system of an existing automobile transmission mainly adopts a gear oil splashing lubrication mode to lubricate all parts in a gearbox, the system requires a large filling amount of gear oil, the gearbox is large in oil stirring loss and low in transmission efficiency, and meanwhile under the special working conditions such as frequent advancing and retreating, the transmission efficiency is high. And the automobile transmission lubricating oil is suitable for lubricating the automobile transmission.

Description

Technical Field

[0001] The invention relates to the technical field of automobile transmission lubrication, in particular to a two-way oil pump structure for an automobile transmission. Background Art

[0002] During the operation of the automobile transmission, the internal parts need to be fully and stably lubricated to ensure their normal operation and service life. The traditional transmission lubrication system has certain limitations. For example, under complex working conditions such as frequent forward and backward movement of the vehicle, it may not be possible to ensure a stable supply of lubricating oil, which in turn affects the performance of the transmission. At the same time, the existing automobile transmission lubrication system mainly uses gear oil splash lubrication to lubricate the various parts in the transmission. This type of system requires a large amount of gear oil to be filled, the gearbox has a large oil stirring loss, and the transmission efficiency is low. At the same time, under special working conditions such as frequent forward and backward movement, some parts in the transmission cannot be fully lubricated, resulting in early failure of the transmission. To this end, a bidirectional oil pump structure for active lubrication of the transmission is designed through CAE lubrication simulation and experimental verification. The active lubrication system with this structure can well solve the above problems. Summary of the invention

[0003] The present invention is intended to provide a bidirectional oil pump structure for an automobile transmission, so as to solve the problem that the prior art may not be able to ensure a stable supply of lubricating oil under complex working conditions such as frequent forward and backward movement of the vehicle, thereby affecting the performance of the transmission. At the same time, the lubrication system of the existing automobile transmission mainly uses gear oil splash lubrication to lubricate the various components in the transmission. Such a system requires a large amount of gear oil to be filled, the oil churning loss of the transmission is large, and the transmission efficiency is low. At the same time, under special working conditions such as frequent forward and backward movement, some parts in the transmission cannot be fully lubricated, resulting in the problem of early failure of the transmission.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: The technical solution provided by the present invention is: a bidirectional oil pump structure for an automobile transmission, comprising a housing, one end of the housing is bolted with an oil suction port end cover, the other end of the housing is bolted with an oil outlet end cover, the inner wall of the housing is movably provided with a transmission device, and the inner wall of the housing is movably provided with a blocking device; The inner walls of the oil suction port end cover and the oil outlet end cover are symmetrically provided with oil suction holes, one end of the oil suction hole is provided with a valve hole, one end of the valve hole is fixedly provided with an oil groove, one end of the oil groove is provided with a spring hole, and one end of the spring hole is provided with an oil outlet hole.

[0005] Furthermore, the housing includes an oil pump rotor end cover, an oil pump end cover is arranged above the oil pump rotor end cover, oil port end cover bolt grooves are symmetrically arranged on both sides of the oil pump rotor end cover and the oil pump end cover, and oil pump bolt grooves are symmetrically arranged on both sides of the oil pump rotor end cover and the oil pump end cover.

[0006] Furthermore, the transmission device includes an inner rotor drive shaft movably mounted on the surface of the oil pump rotor end cover, an oil pump inner rotor is fixedly arranged on the surface of the inner rotor drive shaft, and an oil pump outer rotor is movably arranged above the oil pump inner rotor.

[0007] Furthermore, the oil pump rotor end cover and the inner wall of the oil pump end cover are symmetrically provided with waist-shaped grooves.

[0008] Furthermore, the blocking device includes a ball valve spring fixedly mounted on one end of the inner wall of the spring hole, an oil circuit one-way ball valve fixedly mounted on the other end of the ball valve spring, and one end of the oil circuit one-way ball valve is adapted to the valve hole.

[0009] Furthermore, the bolts in the bolt groove of the oil port cover are provided with oil port cover mounting bolts, and the bolts in the oil pump bolt groove are provided with oil pump mounting bolts.

[0010] The beneficial effects of this technical solution are: (1) Under various complex and frequent forward and reverse special operating conditions of the vehicle, it can provide oil for the active lubrication system of the transmission to ensure that the active lubrication system of the transmission can work normally in both forward and reverse directions. The active lubrication system of the transmission with a two-way oil pump can reduce the amount of lubricating oil used under the conditions of meeting lubrication requirements, thereby improving the transmission efficiency of the transmission and the economy of the vehicle.

[0011] (2) The active lubrication system of the transmission equipped with the bidirectional oil pump can accurately control the flow and distribution of oil. While meeting the lubrication requirements of the internal components of the transmission, it can reduce the amount of lubricating oil used and reduce the operating resistance caused by excessive lubricating oil inside the transmission.

[0012] (3) By reducing the amount of lubricating oil used and ensuring good lubrication of the transmission under complex working conditions, the transmission efficiency of the transmission can be improved, thereby improving the economic efficiency of the entire vehicle and reducing the operating costs of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is one of the structural schematic diagrams of a bidirectional oil pump structure of an automobile transmission proposed by the present invention; Figure 2 This is a second structural schematic diagram of a bidirectional oil pump structure for an automobile transmission proposed by the present invention; Figure 3 A schematic diagram of the internal structure of a bidirectional oil pump structure for an automobile transmission proposed by the present invention; Figure 4 This is a schematic diagram of the internal planar structure of a bidirectional oil pump structure for an automobile transmission proposed by the present invention; Figure 5 A schematic diagram of the working principle of the oil pump rotating counterclockwise in a bidirectional oil pump structure of an automobile transmission proposed by the present invention; Figure 6 This is a schematic diagram of the working principle of the clockwise rotation of the oil pump in a bidirectional oil pump structure of an automobile transmission proposed by the present invention.

[0014] The names of the corresponding marks in the accompanying drawings are: 1. housing; 2. oil suction port end cover; 3. oil outlet port end cover; 4. transmission device; 5. sealing device; 6. oil port end cover mounting bolts; 7. oil pump mounting bolts; 101. oil pump rotor end cover; 102. oil pump end cover; 103. oil port end cover bolt groove; 104. oil pump bolt groove; 201. oil suction hole; 202. valve hole; 203. oil groove; 204. spring hole; 205. oil outlet hole; 401. inner rotor drive shaft; 402. oil pump inner rotor; 403. oil pump outer rotor; 404. waist-shaped groove; 501. ball valve spring; 502. oil circuit one-way ball valve. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1: See also Figure 1-6The present invention provides a technical solution: a two-way oil pump structure for an automobile transmission, an oil suction port end cover 2, an oil pump mounting bolt 7, an inner rotor driving shaft 401, an oil outlet end cover 3, a ball valve spring 501, an oil port end cover mounting bolt 6, an oil circuit one-way ball valve 502, an oil pump rotor end cover 101, an oil pump inner rotor 402, an oil pump outer rotor 403, and a housing 1. The oil suction port end cover 2 is connected to the oil inlet end of the housing 1 by bolts, and two oil circuit one-way ball valves 502 at the oil suction end are respectively installed to two valve holes 202 of the oil suction port end cover 2, and the bottom hole of the valve hole 202 is a conical surface, which is used to limit the oil circuit one-way ball valve 502 and cooperate with the oil circuit one-way ball valve 502 to seal the oil circuit, and the depth of the valve hole 202 is greater than the diameter of the oil circuit one-way ball valve 502. The hole 202 has an oil groove 203 on its wall, the depth of which is less than the depth of the valve hole 202 and greater than the radius of the oil circuit one-way ball valve 502, the valve hole 202 and the oil circuit one-way ball valve 502 are matched with a small gap, the oil groove 203 is connected with the valve hole 202 and cannot affect the guiding effect of the valve hole 202 on the movement of the oil circuit one-way ball valve 502 in the valve hole 202, the oil suction hole 201 on the oil suction port end cover 2 is coaxial with the valve hole 202 and is connected with the conical surface of the bottom hole of the valve hole 202, the diameter of the oil suction hole 201 is smaller than the diameter of the oil circuit one-way ball valve 502, the ball valve springs 501 corresponding to the two oil circuit one-way ball valves 502 at the oil suction end are respectively installed in the spring holes 204 on the housing 1, the spring hole 204 is coaxial with the valve hole 202, and the spring hole 204 and the ball valve spring 501 are matched with a small gap The inner wall of the spring hole 204 is also provided with an oil groove 203, which is communicated with the spring hole 204 and the valve hole 202 and cannot affect the guiding effect of the spring hole 204 on the compression and rebound of the ball valve spring 501 in the spring hole 204. The diameter of the spring hole 204 is smaller than the diameter of the oil circuit one-way ball valve 502. The end surface of the spring hole 204 is used for limiting the movement of the oil circuit one-way ball valve 502 in the valve hole 202 in another direction. The housing 1 has two oil outlet holes 205 which are coaxial with and penetrate the two spring holes 204 and are respectively penetrated with the two mirror-image waist-shaped grooves 404 on the housing 1. The diameter of the oil outlet hole 205 is smaller than the inner diameter of the ball valve spring 501. The spring hole 204 and the oil outlet hole 205 form a stepped hole for limiting the ball valve spring 501. The inner rotor 4 of the oil pump 02 and the oil pump outer rotor 403 are installed in the rotor hole of the housing 1, one end of the inner rotor drive shaft 401 is connected to the oil pump inner rotor 402, and the other end passes through the drive shaft hole of the housing 1 to connect to the internal gear shaft of the transmission or an independent drive motor, wherein the inner rotor drive shaft 401 is coaxial with the oil pump inner rotor 402, and the oil pump outer rotor 403 is installed eccentrically relative to the inner rotor drive shaft 401 and the oil pump inner rotor 402, the oil pump rotor end cover 101 and the oil pump end cover 102 are connected and fixed to the bidirectional oil pump by the oil pump mounting bolts 7, the stop coaxial with the inner rotor drive shaft 401 on the housing 1 is used for positioning the bidirectional oil pump, and the oil pump rotor end cover 101 is used for axial limitation of the oil pump inner rotor 402 and the oil pump outer rotor 403 and sealing the oil in the rotor hole of the housing 1; The specific implementation process is as follows: When the bidirectional oil pump is working, the gear shaft part inside the transmission or the independent driving motor drives the inner rotor driving shaft 401 to rotate, and the rotation of the inner rotor driving shaft 401 causes the internal meshing cycloid gear pump to rotate. One of the two waist-shaped grooves 404 on the housing 1 will form a negative pressure, and the other waist-shaped groove 404 will form a positive pressure. The oil circuit one-way ball valve 502 of the oil suction port end cover 2 connected to the waist-shaped groove 404 forming the negative pressure compresses the matched ball valve spring 501 and moves in the matched valve hole 202. The conical surface of the valve hole 202 here is in contact with the oil circuit one-way ball valve 5 02 forms a gap that cannot be sealed, and the gear oil will be sucked from the oil suction hole 201 into the oil groove 203 and the oil outlet hole 205 that flow through the gap here, the valve hole 202 and the spring hole 204 to reach the waist-shaped groove 404 that forms negative pressure. The oil circuit one-way ball valve 502 of the housing 1 that is connected to the waist-shaped groove 404 that forms negative pressure is closely contacted with the conical surface of the valve hole 202 here by the elastic force of the ball valve spring 501 and the negative pressure to form a seal, and the oil circuit one-way ball valve 502 of the housing 1 that is connected to the waist-shaped groove 404 that forms positive pressure is sealed. 02 compresses the matching ball valve spring 501 and moves in the matching valve hole 202. The conical surface of the valve hole 202 here forms a gap with the oil circuit one-way ball valve 502 and cannot be sealed. The gear oil will flow from the oil groove 203 through the oil outlet hole 205 and be discharged through the gap here, the oil groove 203 connected with the valve hole 202 and the spring hole 204, and the oil drain hole will discharge the gear oil. The oil circuit one-way ball valve 502 of the oil suction port end cover 2 connected to the waist-shaped groove 404 forming positive pressure will be closed due to the elastic force of the matching ball valve spring 501 and the oil pressure. 502 and the conical surface of the valve hole 202 here are in close contact to form a seal. When the rotation direction of the inner rotor drive shaft 401 changes, the oil groove 203 that forms negative pressure will form positive pressure, and the oil groove 203 that forms positive pressure will form negative pressure. The oil suction port end cover 2 and the oil circuit one-way ball valve 502 at the oil pump outlet end change from open to closed, and from closed to open. The pumped gear oil fully lubricates the internal components of the transmission through the oil circuit, so that the transmission can adapt to various complex working conditions and road conditions. At the same time, it can reduce the amount of lubricating oil used and improve the working efficiency of the transmission.

[0017] Embodiment 2: See also Figure 1-6The present invention provides a technical solution: a bidirectional oil pump structure of an automobile transmission, comprising a housing 1, the housing 1 comprising an oil pump rotor end cover 101, an oil pump end cover 102 being installed above the oil pump rotor end cover 101, oil port end cover bolt grooves 103 being symmetrically installed on both sides of the oil pump rotor end cover 101 and the oil pump end cover 102, oil pump bolt grooves 104 being symmetrically installed on both sides of the oil pump rotor end cover 101 and the oil pump end cover 102, an oil suction port end cover 2 being bolted to one end of the housing 1, oil suction port end cover 2 and oil outlet end cover 3 being symmetrically provided with oil suction holes 201 on their inner walls, the oil suction port end cover 2 and the oil outlet end cover 3 being symmetrically provided with oil suction holes 201, the oil suction hole 201 being one of the entrances for lubricating oil to enter the oil pump, a valve hole 202 being provided at one end of the oil suction hole 201, the valve hole 202 being used to install relevant components of the plugging device 5, and being used to seal the oil flow. The oil groove 203 is fixedly provided at one end of the valve hole 202, and the oil groove 203 provides a channel for the flow of oil. A spring hole 204 is provided at one end of the oil groove 203, and the spring hole 204 is used to install the ball valve spring 501. An oil outlet hole 205 is provided at one end of the spring hole 204. The oil outlet end cover 3 is bolted to the other end of the housing 1. The transmission device 4 is movably installed on the inner wall of the housing 1. The transmission device 4 includes an inner rotor drive shaft 401 movably installed on the surface of the oil pump rotor end cover 101. The inner rotor drive shaft 401 is fixedly installed with an oil pump inner rotor 402. The oil pump outer rotor 403 is movably installed above the inner rotor 402 of the oil pump. The inner rotor drive shaft 401 is externally powered (such as a gear shaft member inside the transmission or an independent drive motor). The inner rotor 402 and the outer rotor 403 of the oil pump rotate under the drive of the oil pump, thereby driving the inner rotor 402 and the outer rotor 403 of the oil pump to rotate, forming the working form of the internal meshing cycloid gear pump. The inner walls of the oil pump rotor end cover 101 and the oil pump end cover 102 are symmetrically provided with waist-shaped grooves 404. During the operation of the oil pump, the waist-shaped grooves 404 will produce pressure changes with the rotation of the inner rotor and the outer rotor, forming a negative pressure or positive pressure area, thereby realizing the suction and discharge of oil. The inner wall of the shell 1 is movably installed with a sealing device 5, and the sealing device 5 includes a ball valve spring 501 fixedly installed at one end of the inner wall of the spring hole 204, and the other end of the ball valve spring 501 is fixedly installed with an oil circuit one-way ball valve 502, one end of the oil circuit one-way ball valve 502 is adapted to the valve hole 202, and the ball valve spring 501 and the oil circuit one-way ball valve 502 are adapted to the valve hole 202. Cooperate, according to the oil pressure and the pressure state of the waist-shaped groove 404, control the unidirectional flow of oil between the oil suction hole 201, the valve hole 202, the oil groove 203, the spring hole 204 and the oil outlet 205, ensure that the oil flows in a predetermined direction, and realize the oil suction and oil discharge functions of the oil pump. The transmission device 4 and the blocking device 5 are both movably arranged on the inner wall of the shell 1, and cooperate with each other to realize the oil suction and oil discharge functions of the oil pump. The bolts in the oil port end cover bolt groove 103 are installed with the oil port end cover mounting bolts 6, and the bolts in the oil pump bolt groove 104 are installed with the oil pump mounting bolts 7. The oil pump rotor end cover 101 and the oil pump end cover 102 realize the connection between the oil suction port end cover 2 and the oil outlet end cover 3 through the oil port end cover bolt grooves 103 and the oil port end cover mounting bolts 6 symmetrically arranged on both sides.At the same time, the connection between the oil pump rotor end cover 101 and the oil pump end cover 102 is achieved through the oil pump bolt grooves 104 and the oil pump mounting bolts 7 symmetrically arranged on both sides; The specific implementation process is as follows: First, the inner rotor drive shaft 401 is installed on the surface of the oil pump rotor end cover 101 to ensure that it can rotate flexibly, and then the oil pump inner rotor 402 is fixedly installed on the surface of the inner rotor drive shaft 401, and then the oil pump outer rotor 403 is placed above the oil pump inner rotor 402 to form an internal meshing structure with the oil pump inner rotor 402.

[0018] A ball valve spring 501 is installed at one end of the inner wall of the spring hole 204 of the oil suction port end cover 2 and the oil outlet end cover 3 respectively, and then an oil circuit one-way ball valve 502 is installed at the other end of the ball valve spring 501 to ensure that the oil circuit one-way ball valve 502 can move flexibly in the valve hole 202 under the action of the ball valve spring 501.

[0019] Install the oil suction port cover 2 in the oil port cover bolt groove 103 at one end of the housing 1 through the oil port cover mounting bolts 6 to ensure a tight connection. Similarly, install the oil outlet cover 3 in the oil port cover bolt groove 103 at the other end of the housing 1 through the oil port cover mounting bolts 6.

[0020] Finally, the oil pump rotor end cover 101 and the oil pump end cover 102 are connected through the oil pump bolt groove 104 using the oil pump mounting bolts 7 to complete the assembly of the entire oil pump structure.

[0021] After the car is started, when the transmission starts working, external power is transmitted to the inner rotor drive shaft 401, causing it to start rotating, thereby driving the oil pump inner rotor 402 and the oil pump outer rotor 403 to rotate, and the oil pump starts working.

[0022] During the operation of the oil pump, according to the rotation direction of the inner rotor and the outer rotor and the pressure change in the waist-shaped groove 404, the oil circuit one-way ball valve 502 of the sealing device 5, in cooperation with the ball valve spring 501, automatically controls the suction and discharge of oil to ensure a stable supply of lubricating oil to the transmission.

[0023] When the vehicle is driving, whether forward or backward, when the operating conditions change and the rotation direction of the inner rotor drive shaft 401 changes, the oil pump can automatically adapt and ensure the correct supply direction of the lubricating oil by switching the oil circuit one-way ball valve 502 to maintain normal lubrication of the transmission.

[0024] Working principle: When the automobile transmission is working, external power such as the internal gear shaft of the transmission or an independent drive motor drives the inner rotor drive shaft 401 to rotate, and the inner rotor drive shaft 401 drives the oil pump inner rotor 402 to rotate. Since the oil pump inner rotor 402 and the oil pump outer rotor 403 are an internal meshing structure, the oil pump outer rotor 403 also rotates accordingly.

[0025] Take the oil suction process as an example of rotation in a certain direction: as the inner rotor and the outer rotor rotate, a negative pressure area and a positive pressure area will be formed in the waist-shaped groove 404 on the inner wall of the oil pump rotor end cover 101 and the oil pump end cover 102. Assuming that negative pressure is formed in the waist-shaped groove 404 area connected to the oil suction port end cover 2, under the action of negative pressure, the oil circuit one-way ball valve 502 in the oil suction port end cover 2 overcomes the elastic force of the ball valve spring 501 and moves toward the spring hole 204, so that the oil circuit one-way ball valve A gap is generated between 502 and the valve hole 202, and the lubricating oil enters from the oil suction hole 201, passes through the gap between the valve hole 202 and the oil circuit one-way ball valve 502, flows into the oil groove 203, and then passes through the spring hole 204, and finally enters the waist-shaped groove 404 area where negative pressure is formed. At this time, the corresponding oil circuit one-way ball valve 502 in the oil outlet end cover 3 is tightly fitted on the valve hole 202 under the elastic force of the ball valve spring 501 and the oil pressure, preventing the oil from flowing out of the oil outlet end cover 3.

[0026] 20. The oil discharge process takes rotation in a certain direction as an example: when positive pressure is formed in the waist-shaped groove 404 area connected to the oil outlet end cover 3, the oil circuit one-way ball valve 502 in the oil outlet end cover 3 overcomes the elastic force of the ball valve spring 501 under the action of oil pressure and moves toward the spring hole 204, so that a gap is generated between the oil circuit one-way ball valve 502 and the valve hole 202. The lubricating oil flows from the waist-shaped groove 404 through the oil outlet hole 205, flows into the spring hole 204, and then passes through the oil groove 203 and the gap between the valve hole 202 and the oil circuit one-way ball valve 502, and is discharged from the oil outlet hole 205 of the oil outlet end cover 3. At this time, the corresponding oil circuit one-way ball valve 502 in the oil suction port end cover 2 is tightly fitted on the valve hole 202 under the elastic force of the ball valve spring 501 and oil pressure, preventing oil from entering from the oil suction port end cover 2.

[0027] Working conditions when the working condition is switched: When the working state of the automobile transmission changes, resulting in a change in the rotation direction of the inner rotor drive shaft 401, the negative pressure and positive pressure areas of the waist-shaped groove 404 will also change accordingly. At this time, the oil circuit one-way ball valve 502 in the oil suction port end cover 2 and the oil outlet end cover 3 will automatically switch between the open and closed states according to the pressure changes, thereby changing the direction of oil flow, thereby ensuring that a stable supply of lubricating oil can be provided to the transmission under different working conditions such as the car moving forward and backward.

[0028] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bidirectional oil pump structure for an automobile transmission, characterized in that: It comprises a housing (1), one end of the housing (1) is bolted with an oil suction port end cover (2), the other end of the housing (1) is bolted with an oil outlet port end cover (3), the inner wall of the housing (1) is movably provided with a transmission device (4), and the inner wall of the housing (1) is movably provided with a blocking device (5); The inner walls of the oil suction port end cover (2) and the oil outlet port end cover (3) are both symmetrically provided with oil suction holes (201), one end of the oil suction hole (201) is provided with a valve hole (202), one end of the valve hole (202) is fixedly provided with an oil groove (203), one end of the oil groove (203) is provided with a spring hole (204), and one end of the spring hole (204) is provided with an oil outlet hole (205).

2. The bidirectional oil pump structure of an automobile transmission according to claim 1, characterized in that: The housing (1) comprises an oil pump rotor end cover (101), an oil pump end cover (102) is provided above the oil pump rotor end cover (101), oil port end cover bolt grooves (103) are symmetrically provided on both sides of the oil pump rotor end cover (101) and the oil pump end cover (102), and oil pump bolt grooves (104) are symmetrically provided on both sides of the oil pump rotor end cover (101) and the oil pump end cover (102).

3. The bidirectional oil pump structure of an automobile transmission according to claim 2, characterized in that: The transmission device (4) comprises an inner rotor drive shaft (401) movably mounted on the surface of the oil pump rotor end cover (101), an oil pump inner rotor (402) being fixedly disposed on the surface of the inner rotor drive shaft (401), and an oil pump outer rotor (403) being movably disposed above the oil pump inner rotor (402).

4. The automobile transmission bidirectional oil pump structure according to claim 3 is characterized in that: The inner walls of the oil pump rotor end cover (101) and the oil pump end cover (102) are both symmetrically provided with waist-shaped grooves (404).

5. The automobile transmission bidirectional oil pump structure according to claim 1, characterized in that: The blocking device (5) comprises a ball valve spring (501) fixedly mounted on one end of the inner wall of the spring hole (204), and an oil circuit one-way ball valve (502) fixedly mounted on the other end of the ball valve spring (501), wherein one end of the oil circuit one-way ball valve (502) is adapted to fit the valve hole (202).

6. The automobile transmission bidirectional oil pump structure according to claim 2, characterized in that: The oil port cover bolt groove (103) has an oil port cover mounting bolt (6) disposed therein, and the oil pump bolt groove (104) has an oil pump mounting bolt (7) disposed therein.

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