Composite motor end cover and its processing technology

Abstract

The invention relates to the technical field of automobile parts processing, specifically to a composite motor end cover, comprising a cover body and a sealing plate, the cover body is provided with a front cavity, an axial through hole and a back cavity, the axial through hole is provided with an upper pre-set groove and a lower pre-set groove, an upper oil storage box is installed in the upper pre-set groove, a lower oil storage box is installed in the lower pre-set groove, the upper pre-set groove is provided with a first inflow hole and a second inflow hole, the lower pre-set groove is provided with a first overflow hole and an overflow hole, the first inflow hole, the second inflow hole, the first overflow hole and the second overflow hole are all plugged with drainage pipes, a driven ring body is installed on the inner side of the axial through hole, a vertical movable frame is installed on the lower oil storage box, a piston rod is fixedly connected to the lower end of the vertical movable frame, and a piston disk is connected to the lower end of the piston rod; circulating oil channels are formed at different angles of the cover body, so that the bearings of each bearing chamber are fully lubricated and cooled, thereby improving the heat dissipation efficiency of the motor end cover; a processing technology of the composite motor end cover is also provided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a composite motor end cover and a processing technology thereof. Background Art

[0002] The composite motor end cover is an important part of the motor structure, mainly used to support the rotor and stator of the motor, and also plays the role of sealing and protecting internal components. In modern motor design, the processing technology of the end cover is also particularly important.

[0003] In the prior art, in order to ensure that the bearing can rotate continuously and smoothly, lubricating oil needs to be added to the bearing, which can reduce friction and cool down. However, although the traditional end cover is provided with an oil channel, the lubricating oil can be added to the bearing, but it is not easy to discharge and is easy to accumulate inside the motor housing, which can easily cause excessive internal lubricating oil; and the motor end cover of the composite bearing chamber has high requirements on the design of the oil circuit, the oil circuit flow direction and the lubrication of the bearing; the size of the oil hole, the wall thickness and the deviation angle of the oil hole put forward high requirements on the processing technology and processing tooling, and cannot meet the strength, lubrication and processing feasibility. Summary of the invention

[0004] The object of the present invention is to provide a composite motor end cover and a processing technology thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite motor end cover, comprising a cover body and a sealing plate arranged at the front end of the cover body, wherein the cover body is provided with a front cavity, an axial through hole and a reverse cavity from left to right in sequence, and upper and lower sides of the axial through hole are provided with an upper pre-groove and a lower pre-groove in sequence, an upper oil storage box is detachably installed in the upper pre-groove, and a lower oil storage box is detachably installed in the lower pre-groove, and the upper oil storage box and the lower oil storage box are connected through a reflux pipe; a hole is provided at the upper right end of the upper pre-groove to communicate with the outside An oil filling hole, and a first inflow hole connected to the front cavity and a second inflow hole connected to the back cavity are sequentially opened on the left and right sides of the lower half of the upper pre-groove, and a first overflow hole connected to the front cavity and an overflow hole connected to the back cavity are sequentially opened on the left and right sides of the lower half of the lower pre-groove, and a group of drainage pipes are movably inserted in the first inflow hole, the second inflow hole, the first overflow hole and the second overflow hole, and a pushing component for driving the drainage pipe to perform telescopic movement is arranged inside the upper oil storage box and the lower oil storage box;

[0006] A driven ring body is installed on the inner side of the shaft perforation for rotational limiting, and the driven ring body is driven to rotate by a motor; a vertical movable frame is installed on the inner side of the upper half of the lower oil storage box for sliding limiting, and the vertical movable frame is driven by a linkage component to perform linear up and down movement, and the linkage component is powered by the driven ring body; a piston rod is fixedly connected to the lower end of the vertical movable frame, and the lower end of the piston rod penetrates into the inner cavity of the lower oil storage box and is fixedly connected to a piston disk, a plurality of openings are opened on the piston disk, a first check valve is arranged on the opening, and a second check valve is arranged on the two sets of drainage pipes located on the lower oil storage box.

[0007] Preferably, the upper oil storage box and the lower oil storage box are provided with a placement cavity for accommodating a pushing component, and the pushing component includes a balancing block, a support rod, a door-type push frame, a return spring and a connecting frame. A group of balancing blocks are fixedly connected to the two horizontal sides of each drainage tube. A lateral inclined groove is provided on the side of the balancing block away from the drainage tube, and a lever is inserted in the lateral inclined groove. One end of the support rod is fixedly connected to the lever, and the other end of the support rod is fixedly connected to the door-type push frame.

[0008] Preferably, at least three sets of return springs are fixedly provided at one end of the door-type push frame, and the other end of the door-type push frame is fixedly connected to the connecting frame. The upper oil storage box and the lower oil storage box are provided with a groove for accommodating the connecting frame on one side close to the driven ring body.

[0009] Preferably, both horizontal sides of the door-type push frame are provided with bite holes, and the upper oil storage box and the lower oil storage box are provided with clamping components that cooperate with the bite holes, and the clamping components include a wedge block, a limit block, a longitudinal push column, a long abutment rod, a stop plate and a compression spring. One end of the wedge block is fixedly connected to the limit block, and the other end of the wedge block is inserted into the bite hole. A forward inclined groove is provided on the limit block, and a longitudinal push column is inserted in the forward inclined groove. The longitudinal push column is fixedly connected to the long abutment rod.

[0010] Preferably, one end of the stop disk is fixedly connected to the compression spring, and the other end of the stop disk is fixedly connected to the abutting long rod, and the inner bottom walls of the upper pre-groove and the lower pre-groove are both in contact with and connected to the abutting long rod.

[0011] Preferably, the linkage component includes a cylindrical pin, a moving block and a pushing column. A driving inclined groove for accommodating the pushing column is opened on the vertical moving frame. One end of the moving block is fixedly connected to the pushing column, and the other end of the moving block is fixedly connected to the cylindrical pin. A cam groove for accommodating the cylindrical pin is opened on the outer wall of the driven ring body.

[0012] Preferably, the driven ring body consists of a left mounting ring and a right mounting ring, and three groups of external protrusions distributed in a circular array are protruding from the outer walls of the left mounting ring and the right mounting ring, and radial grooves for the external protrusions to slide and annular grooves for the external protrusions to rotate are provided on the inner wall of the shaft through hole.

[0013] Preferably, the inner side walls of the left mounting ring and the right mounting ring are fixedly provided with three groups of inner protrusions distributed in a circular array, two adjacent groups of inner protrusions are abutted against each other and fixed by screws, a retaining ring is protrudingly provided on one side of the right mounting ring close to the left mounting ring, and a retaining groove for accommodating the retaining ring is opened on the side wall of the left mounting ring.

[0014] Preferably, the oil filling hole, the first inflow hole, the second inflow hole, the first overflow hole and the second overflow hole are all arranged in an inclined shape, and a sealing cover is provided at the opening of the oil filling hole.

[0015] A processing technology for a composite motor end cover, the processing technology comprises the following steps: firstly, cutting an aluminum block, and then processing the shape of the cover body; then processing the front cavity and the back cavity, and performing aging, shot blasting and fine processing of the front cavity and the bearing chamber, and then fine processing of the pin hole and the screw installation hole, and finally performing ultrasonic cleaning, laser coding, inspection, and storage and delivery.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention improves the use efficiency of the motor end cover and reduces the product weight and energy consumption by designing multiple bearing chambers and connecting ports of electric control accessories in the cavity of the cover body; and by arranging the oil filling hole, the first inflow hole, the second inflow hole, the first overflow hole and the second overflow hole for coordinated use, a circulating oil channel can be formed at different angles of the cover body, so that the bearings in each bearing chamber are fully lubricated and cooled, thereby improving the heat dissipation efficiency of the motor end cover.

[0018] 2. By arranging a balance block, a lateral inclined groove, a lever, a support rod, a door-type push frame, a reset spring and a connecting frame for use together, the two sets of drainage pipes can be driven to perform horizontal telescopic movement. On the one hand, the upper oil storage box and the lower oil storage box can be quickly limited and fixed. On the other hand, the lubricating oil can flow from the upper oil storage box into the front cavity through the first inflow hole and into the rear cavity through the second inflow hole in sequence, and the excess grease in the front cavity and the rear cavity can flow into the lower oil storage box through the first overflow hole and the second overflow hole in sequence to be collected and reused, thereby avoiding waste.

[0019] 3. The present invention can convert the squeezing force of the inner wall of the upper and lower pre-set grooves on the long rod into the horizontal pushing force of the wedge block by arranging the limit block, the longitudinal push column, the stop plate and the compression spring to relieve the limit effect of the door-type push frame, so that the multiple groups of drainage pipes can move horizontally and extend into the holes docked with the two groups of oil storage boxes just after they are fully inserted into the pre-set grooves, so as to realize the limit fixation of the oil storage box and complete the docking and communication between the first inflow hole, the second inflow hole and the upper oil storage box, and the first overflow hole, the second overflow hole and the lower oil storage box.

[0020] 4. By setting the cylindrical pin, moving block and push column in conjunction with the driven ring body, the rotational motion of the motor shaft itself can be converted into the up and down piston motion of the piston disc. When the piston disc moves downward, the grease remaining at the bottom of the front cavity and the back cavity will flow into the lower oil storage box. When the piston disc moves upward, the grease retained in the lower oil storage box will be pressurized and flow into the upper oil storage box again through the return pipe for recycling. This can not only evenly grease the bearings in each cavity, but also solve the problem of the difficulty in discharging excess grease.

[0021] 5. The present invention sets the driven ring body as a separate structure so that it can be detachably mounted on the cover body, thereby facilitating the disassembly and assembly of the upper oil storage box and the lower oil storage box from the cover body, thereby satisfying both the strength and the effect of circulating lubrication and making the cover body processing feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the cover body of the present invention.

[0023] Figure 2 FIG. 4 is a schematic diagram of the cover body of the present invention from another viewing angle.

[0024] Figure 3 It is a schematic diagram of the explosion of the cover body of the present invention.

[0025] Figure 4 It is a schematic cross-sectional view of the cover body of the present invention.

[0026] Figure 5 It is a schematic diagram of the driven ring body, the upper oil storage box and the lower oil storage box of the present invention.

[0027] Figure 6 It is a three-dimensional schematic diagram of the driven ring body of the present invention.

[0028] Figure 7 It is a schematic diagram of the left mounting ring and the right mounting ring of the present invention.

[0029] Figure 8 It is a connection diagram of the upper oil storage box, the lower oil storage box and the return pipe of the present invention.

[0030] Fig. 9 It is a schematic cross-sectional view of the lower oil storage box of the present invention.

[0031] Fig.10 It is a schematic diagram of the upper oil storage box and the pushing component of the present invention.

[0032] Fig.11 It is a schematic diagram of the door-type push frame and the clamping component of the present invention.

[0033] In the figure: 1, cover body; 101, front cavity; 102, shaft through hole; 103, back cavity; 104, oil filling hole; 105, first inflow hole; 106, second inflow hole; 107, first overflow hole; 108, second overflow hole; 2, driven ring body; 201, left mounting ring; 202, right mounting ring; 203, inner convex block; 204, outer convex block; 3, upper oil storage box; 4, lower oil storage box; 5, return pipe; 6, cylindrical pin; 7, moving Block; 8, push column; 9, vertical moving frame; 10, piston rod; 11, piston plate; 12, drainage tube; 13, balance block; 14, lateral inclined groove; 15, lever; 16, support rod; 17, door-type push frame; 1701, bite; 18, return spring; 19, connecting frame; 20, wedge block; 21, limit block; 22, forward inclined groove; 23, longitudinal push column; 24, resist long rod; 25, stop plate; 26, compression spring; 27, sealing plate. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figures 1 to 11The present invention provides a technical solution: a composite motor end cover, comprising a cover body 1 and a sealing plate 27 arranged at the front end of the cover body 1, the cover body 1 is provided with a front cavity 101, an axial through hole 102 and a reverse cavity 103 from left to right, the upper and lower sides of the axial through hole 102 are respectively provided with an upper pre-groove and a lower pre-groove, an upper oil storage box 3 is detachably installed in the upper pre-groove, a lower oil storage box 4 is detachably installed in the lower pre-groove, and the upper oil storage box 3 and the lower oil storage box 4 are connected through a return pipe 5; an oil filling hole 104 connected to the outside is opened at the upper right end of the upper pre-groove, and the upper pre-groove is provided with a lower oil storage box 4. A first inflow hole 105 connected to the front cavity 101 and a second inflow hole 106 connected to the back cavity 103 are sequentially opened on the left and right sides of the lower half of the groove, and a first overflow hole 107 connected to the front cavity 101 and an overflow hole connected to the back cavity 103 are sequentially opened on the left and right sides of the lower half of the lower pre-groove, the oil filling hole 104, the first inflow hole 105, the second inflow hole 106, the first overflow hole 107 and the second overflow hole 108 are all arranged in an inclined shape to facilitate the inflow or outflow of grease; a sealing cover is provided at the opening of the oil filling hole 104. A group of drainage tubes 12 are movably inserted in the first inflow hole 105, the second inflow hole 106, the first overflow hole 107 and the second overflow hole 108, and a pushing component for driving the drainage tube 12 to perform telescopic movement is provided inside the upper oil storage box 3 and the lower oil storage box 4; a driven ring body 2 is installed on the inner side of the shaft through-hole 102 for limited rotation, and the driven ring body 2 is driven to rotate by a motor, and a vertical movable frame 9 is installed on the inner side of the upper half of the lower oil storage box 4 for limited sliding, and the vertical movable frame 9 is driven by a linkage component to perform linear up and down movement, and the linkage component is powered by the driven ring body 2; a piston rod 10 is fixedly connected to the lower end of the vertical movable frame 9, and the lower end of the piston rod 10 penetrates into the inner cavity of the lower oil storage box 4 and is fixedly connected to a piston disk 11, a plurality of openings are opened on the piston disk 11, and a first check valve is provided on the opening, and a second check valve is provided on the two groups of drainage tubes 12 located on the lower oil storage box 4.

[0036] Furthermore, by designing multiple bearing chambers and connection ports for electronic control accessories in the cavity of the cover body 1, the use efficiency of the motor end cover is improved and the product weight and energy consumption are reduced; and by arranging the oil filling hole 104, the first inflow hole 105, the second inflow hole 106, the first overflow and the second overflow hole 108 for use in combination, circulating oil channels can be formed at different angles of the cover body 1, so that the bearings in each bearing chamber are fully lubricated and cooled, thereby improving the heat dissipation efficiency of the motor end cover.

[0037] like Figure 8-Figure 11As shown, the upper oil storage box 3 and the lower oil storage box 4 are provided with a placement cavity for accommodating the pushing components, and the pushing components include a balance block 13, a support rod 16, a door-type push frame 17, a reset spring 18 and a connecting frame 19. A set of balance blocks 13 are fixedly connected to both horizontal sides of each drainage tube 12. A lateral inclined groove 14 is provided on the side of the balance block 13 away from the drainage tube 12. A lever 15 is inserted into the lateral inclined groove 14. One end of the support rod 16 is fixedly connected to the lever 15, and the other end of the support rod 16 is fixedly connected to the door-type push frame 17. No less than three sets of reset springs 18 are fixedly arranged at one end of the door-type push frame 17, and the other end of the door-type push frame 17 is fixedly connected to the connecting frame 19. A slot for accommodating the connecting frame 19 is provided on the side of the upper oil storage box 3 and the lower oil storage box 4 close to the driven ring body 2.

[0038] Furthermore, by setting a balance block 13, a lateral inclined groove 14, a lever 15, a support rod 16, a door-type push frame 17, a reset spring 18 and a connecting frame 19 for use in conjunction, the two groups of drainage tubes 12 can be driven to perform horizontal telescopic movement. On the one hand, the upper oil storage box 3 and the lower oil storage box 4 can be quickly limited and fixed. On the other hand, the lubricating oil can flow from the upper oil storage box 3 into the front cavity 101 through the first inflow hole 105 and into the rear cavity 103 through the second inflow hole 106 in turn, and the excess grease in the front cavity 101 and the rear cavity 103 flows into the lower oil storage box 4 through the first overflow hole 107 and the second overflow hole 108 in turn to be collected and utilized again, thereby avoiding waste.

[0039] like Figure 9-11 As shown, both horizontal sides of the door-type push frame 17 are provided with bites 1701, and the upper oil storage box 3 and the lower oil storage box 4 are provided with a clamping component matched with the bite 1701, and the clamping component includes a wedge block 20, a limit block 21, a longitudinal push column 23, a long contact rod 24, a stop plate 25 and a compression spring 26. One end of the wedge block 20 is fixedly connected to the limit block 21, and the other end of the wedge block 20 is inserted into the bite 1701. The limit block 21 is provided with a forward inclined groove 22, and the longitudinal push column 23 is inserted into the forward inclined groove 22, and the longitudinal push column 23 is fixedly connected to the long contact rod 24. One end of the stop plate 25 is fixedly connected to the compression spring 26, and the other end of the stop plate 25 is fixedly connected to the long contact rod 24. The inner bottom walls of the upper pre-groove and the lower pre-groove are both in contact with the long contact rod 24.

[0040] Furthermore, by setting a limit block 21, a longitudinal push column 23, a stop plate 25 and a compression spring 26 for use together, the squeezing force of the inner walls of the upper pre-groove and the lower pre-groove on the long rod 24 can be converted into a horizontal pushing force of the wedge block 20, thereby releasing the limiting effect on the door-type push frame 17, so that the multiple groups of drainage tubes 12 can immediately move horizontally and extend into the holes docked with the two groups of oil storage boxes after they are just fully inserted into the pre-groove, thereby realizing the limiting fixation of the oil storage box and completing the docking and connection between the first inflow hole 105, the second inflow hole 106 and the upper oil storage box 3 and the first overflow hole 107, the second overflow hole 108 and the lower oil storage box 4.

[0041] like Figure 8-Figure 9 As shown, the linkage components include a cylindrical pin 6, a moving block 7 and a pushing column 8. A driving inclined groove for accommodating the pushing column 8 is opened on the vertical moving frame 9. One end of the moving block 7 is fixedly connected to the pushing column 8, and the other end of the moving block 7 is fixedly connected to the cylindrical pin 6. A cam groove for accommodating the cylindrical pin 6 is opened on the outer wall of the driven ring body 2.

[0042] Furthermore, by providing a cylindrical pin 6, a moving block 7 and a pushing column 8 for use in conjunction with the driven ring body 2, the rotational motion of the motor shaft itself can be converted into the up and down piston motion of the piston disc 11. When the piston disc 11 moves downward, the grease remaining at the bottom of the front cavity 101 and the back cavity 103 will flow into the lower oil storage box 4. When the piston disc 11 moves upward, the grease retained in the lower oil storage box 4 will be pressurized and will flow into the upper oil storage box 3 again through the return pipe 5 for recycling. This can not only evenly grease the bearings in each cavity, but also solve the problem of excess grease being difficult to discharge.

[0043] like Figure 6-Figure 7 As shown, the driven ring body 2 is composed of a left mounting ring 201 and a right mounting ring 202. Three groups of outer protrusions 204 distributed in an annular array are protrudingly provided on the outer walls of the left mounting ring 201 and the right mounting ring 202. A radial groove for the outer protrusions 204 to slide and an annular groove for the outer protrusions 204 to rotate are provided on the inner wall of the shaft through hole 102. Three groups of inner protrusions 203 distributed in an annular array are fixedly provided on the inner side walls of the left mounting ring 201 and the right mounting ring 202. Two adjacent groups of inner protrusions 203 are attached and fixed by screws. A snap ring is protrudingly provided on the side of the right mounting ring 202 close to the left mounting ring 201, and a snap ring groove for accommodating the snap ring is provided on the side wall of the left mounting ring 201.

[0044] Furthermore, the driven ring body 2 is set as a separate structure so that it can be detachably installed on the cover body 1, thereby facilitating the disassembly and assembly of the upper oil storage box 3 and the lower oil storage box 4 from the cover body 1, thereby meeting the strength and circulating lubrication effects and making the processing of the cover body 1 feasible.

[0045] When the present invention is used: first, the upper oil storage box 3 and the lower oil storage box 4 are installed in the upper preset groove and the lower preset groove in sequence. At the same time, the long abutting rods 24 on the upper oil storage box 3 and the lower oil storage box 4 are squeezed by the walls of the preset grooves, thereby driving the stop plate 25 to squeeze the compression spring 26, so that the longitudinal push column 23 acts on the forward inclined groove 22, so that the limit block 21 is forced to drive the wedge block 20 to be pulled out of the bite 1701. At this time, the door-type push frame 17 drives the connecting frame 19 to extend outward under the push of the reset spring 18. At this time, The lever 15 on the support rod 16 acts on the lateral inclined groove 14, so that the balance block 13 is forced to drive multiple drainage tubes 12 to extend outward, thereby realizing the limiting fixation of the upper oil storage box 3 and the lower oil storage box 4, and also completing the docking and connection between the first inflow hole 105, the second inflow hole 106 and the upper oil storage box 3 and the first overflow hole 107, the second overflow hole 108 and the lower oil storage box 4, and then the left mounting ring 201 and the right mounting ring 202 are fit and clamped from the left and right sides of the cover body 1, and fixed to each other by screws.

[0046] Then, each bearing is placed in the front cavity 101 and the back cavity 103 in turn, and connected in series through the motor shaft, and a dovetail groove for accommodating the inner convex block 203 is opened on the outer wall of the motor shaft, so that the driven ring body 2 can rotate together with the motor shaft; then, lubricating oil is added to the upper oil storage box 3 through the oil filling hole 104, and the grease in the oil storage box flows into the front cavity 101 through the first inflow hole 105 in turn, and flows into the back cavity 103 through the second inflow hole 106, so as to lubricate the bearings in the two groups of cavities. After a period of time, the grease in the upper oil storage box 3 becomes less, and excess grease remains at the bottom of the front cavity 101 and the back cavity 103, and flows into the lower oil storage box 4 through the first overflow hole 107 and the second overflow hole 108 in turn;

[0047] During this process, the cam groove on the outer wall of the rotating driven ring body 2 acts on the cylindrical pin 6, so that the cylindrical pin 6 drives the moving block 7 to perform horizontal reciprocating motion, and the pushing column 8 on the moving block 7 acts on the driving inclined groove, so that the vertical moving frame 9 is forced to drive the piston rod 10 to perform up and down reciprocating motion. When the piston disc 11 moves downward, the first check valve thereon opens, and the second check valve is closed, and the grease at the bottom of the lower oil storage box 4 enters the upper end of the piston disc 11; and when the piston disc 11 moves upward, the second check valve opens, and the first check valve closes, and the grease on the piston disc 11 is extracted into the reflux pipe 5 and enters the upper oil storage box 3 again for reuse.

[0048] A processing technology for a composite motor end cover includes the following steps: firstly, cutting the aluminum block, then processing the shape of the cover body 1; then processing the front cavity 101 and the back cavity 103, and then aging, shot blasting and finishing the front cavity 101 and the bearing chamber, then finishing the pin hole and screw installation hole, and finally ultrasonic cleaning, laser coding, inspection and storage and delivery. This processing technology can improve production efficiency and reduce costs, thereby promoting progress in this field.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite motor end cover, comprising a cover body (1) and a sealing plate (27) arranged at the front end of the cover body (1), characterized in that: The cover body (1) is provided with a front cavity (101), an axial through hole (102) and a rear cavity (103) in sequence from left to right; an upper pre-groove and a lower pre-groove are provided in sequence on the upper and lower sides of the axial through hole (102); an upper oil storage box (3) is detachably installed in the upper pre-groove; a lower oil storage box (4) is detachably installed in the lower pre-groove; the upper oil storage box (3) and the lower oil storage box (4) are connected via a return pipe (5); an oil injection hole (104) connected to the outside is provided at the upper right end of the upper pre-groove, and oil holes (104) connected to the front cavity (101) are provided in sequence on the left and right sides of the lower half of the upper pre-groove. A first inflow hole (105) and a second inflow hole (106) communicating with the reverse cavity (103); a first overflow hole (107) communicating with the front cavity (101) and an overflow hole communicating with the reverse cavity (103) are sequentially provided on the left and right sides of the lower half of the lower pre-set groove; a group of drainage tubes (12) are movably inserted in the first inflow hole (105), the second inflow hole (106), the first overflow hole (107) and the second overflow hole (108); and a pushing component for driving the drainage tube (12) to perform telescopic movement is provided inside the upper oil storage box (3) and the lower oil storage box (4); A driven ring body (2) is rotatably mounted on the inner side of the shaft through hole (102), and the driven ring body (2) is driven to rotate by a motor. A vertical moving frame (9) is slidably mounted on the inner side of the upper half of the lower oil storage box (4), and the vertical moving frame (9) is driven by a linkage component to move up and down in a straight line, and the linkage component is powered by the driven ring body (2). A piston rod (10) is fixedly connected to the lower end of the vertical moving frame (9), and the lower end of the piston rod (10) penetrates into the inner cavity of the lower oil storage box (4) and is fixedly connected to a piston disk (11). A plurality of openings are formed on the piston disk (11), and a first check valve is provided on the openings. Two sets of drainage pipes (12) located on the lower oil storage box (4) are provided with a second check valve.

2. The composite motor end cover according to claim 1, characterized in that: The upper oil storage box (3) and the lower oil storage box (4) are provided with a placement cavity for accommodating a pushing component. The pushing component comprises a balancing block (13), a support rod (16), a door-type pushing frame (17), a return spring (18) and a connecting frame (19). A group of balancing blocks (13) are fixedly connected to both horizontal sides of each drainage tube (12). A lateral inclined groove (14) is provided on a side of the balancing block (13) away from the drainage tube (12). A lever (15) is inserted into the lateral inclined groove (14). One end of the support rod (16) is fixedly connected to the lever (15), and the other end of the support rod (16) is fixedly connected to the door-type pushing frame (17).

3. The composite motor end cover according to claim 2, characterized in that: One end of the door-shaped push frame (17) is fixedly provided with at least three groups of return springs (18), and the other end of the door-shaped push frame (17) is fixedly connected to a connecting frame (19). A groove for accommodating the connecting frame (19) is provided on one side of the upper oil storage box (3) and the lower oil storage box (4) close to the driven ring body (2).

4. The composite motor end cover according to claim 3 is characterized in that: Both horizontal sides of the door-shaped push frame (17) are provided with bite openings (1701), and the upper oil storage box (3) and the lower oil storage box (4) are provided with clamping components that match the bite openings (1701), and the clamping components include a wedge block (20), a limit block (21), a longitudinal push column (23), an abutting long rod (24), a stop plate (25) and a compression spring (26). One end of the wedge block (20) is fixedly connected to the limit block (21), and the other end of the wedge block (20) is inserted into the bite opening (1701). The limit block (21) is provided with a forward inclined groove (22), and a longitudinal push column (23) is inserted into the forward inclined groove (22), and the longitudinal push column (23) is fixedly connected to the abutting long rod (24).

5. The composite motor end cover according to claim 4, characterized in that: One end of the stop plate (25) is fixedly connected to the compression spring (26), and the other end of the stop plate (25) is fixedly connected to the abutting long rod (24). The inner bottom walls of the upper pre-groove and the lower pre-groove are both in contact with and connected to the abutting long rod (24).

6. The composite motor end cover according to claim 1, characterized in that: The linkage component comprises a cylindrical pin (6), a moving block (7) and a pushing column (8); a driving inclined groove for accommodating the pushing column (8) is provided on the vertical moving frame (9); one end of the moving block (7) is fixedly connected to the pushing column (8); the other end of the moving block (7) is fixedly connected to the cylindrical pin (6); and a cam groove for accommodating the cylindrical pin (6) is provided on the outer wall of the driven ring body (2).

7. The composite motor end cover according to claim 1, characterized in that: The driven ring body (2) is composed of a left mounting ring (201) and a right mounting ring (202); three groups of external protrusions (204) distributed in an annular array are protrudingly provided on the outer walls of the left mounting ring (201) and the right mounting ring (202); radial grooves for the external protrusions (204) to slide and annular grooves for the external protrusions (204) to rotate are provided on the inner wall of the shaft through hole (102).

8. The composite motor end cover according to claim 7, characterized in that: The inner side walls of the left mounting ring (201) and the right mounting ring (202) are fixedly provided with three groups of inner protrusions (203) distributed in a ring array, two adjacent groups of inner protrusions (203) are attached to each other and fixed by screws, a snap ring is protrudingly provided on one side of the right mounting ring (202) close to the left mounting ring (201), and a snap ring groove for accommodating the snap ring is provided on the side wall of the left mounting ring (201).

9. The composite motor end cover according to claim 1, characterized in that: The oil filling hole (104), the first inflow hole (105), the second inflow hole (106), the first overflow hole (107) and the second overflow hole (108) are all arranged in an inclined shape, and a sealing cover is arranged at the opening of the oil filling hole (104).

10. A process for processing a composite motor end cover according to any one of claims 1 to 9, characterized in that: The processing technology The method comprises the following steps: firstly, cutting the aluminum block, then processing the outer shape of the cover body (1); then processing the front cavity (101) and the back cavity (103); and then aging, shot blasting and fine processing the front cavity (101) and the bearing chamber; then fine processing the pin hole and screw installation hole; and finally ultrasonic cleaning, laser coding, inspection and storage and delivery.

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