Motor vehicle generator assembly

Abstract

The application belongs to the technical field of motor vehicle generator assembly, in particular to a motor vehicle generator assembly device, which comprises a base and a mounting frame for fixing a flywheel, a supporting rod is slidably installed on the base, a supporting seat is fixedly installed on the supporting rod, a rotating table is installed in the supporting seat, a plurality of connecting rods in communication with the rotating table are fixedly installed on the outer wall of the rotating table, air cavities are formed in the connecting rods, a I-shaped piston is slidably installed in the inner end of each connecting rod away from the supporting seat, a control console is fixedly connected to the rotating table through a communication pipe, a plurality of positioning rods are fixedly installed on the control console, a positioning table for inserting the I-shaped piston is elastically installed at the end of each positioning rod away from the control console, and the positioning table is hollow. The flywheel is circumferentially pressed, the pressure is evenly distributed on the outer edge of the flywheel, the risk of hole deformation is reduced, the flywheel and the taper / cylindrical surface of the crankshaft are more closely matched, and the installation quality of the flywheel is further improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of motor vehicle generator assembly, in particular to a motor vehicle generator assembly device. BACKGROUND

[0002] The motor vehicle generator assembly device is a key technical system for realizing efficient integration and assembly of core components of a vehicle-mounted generator (such as an alternator or a permanent magnet generator), and its core function is to position, fix and debug the components such as the stator, the rotor, the rectifier module, the voltage regulator, the bearing and the shell according to precise process requirements, so as to ensure that the generator stably outputs electric energy in the vehicle operation and adapts to complex working conditions.

[0003] For example, a methanol generator flywheel assembly device and method are disclosed in Chinese Patent CN119927602A. The movement of the second piston causes the push rod to drive the moving block to move linearly, thereby driving the screw rod to rotate, synchronously driving the worm to rotate. The worm and the worm gear cooperate to drive the rotating rod to adjust the angle, thereby changing the movement path of the electric push rod when pushing the hammer seat, so that the movement distance of the hammer seat is accurately controlled, and the hammer block can accurately align the flywheel position that needs to be hammered, ensuring that the hammering force can accurately act on the target position.

[0004] However, the above-mentioned patent has defects in the way of using a single hammer head to repeatedly hammer at a fixed position and angle. This method can cause local stress concentration of the flywheel, easily cause micro-cracks or fatigue fracture, significantly shorten the service life of the flywheel, and cause the flywheel and the eccentric shaft to be installed at an angle, with a deviation of more than 0.1 mm, which can destroy the dynamic balance and significantly increase the overall failure rate.

[0005] Therefore, the application provides a motor vehicle generator assembly device. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0007] The technical solution adopted by the application to solve the technical problems is that the motor vehicle generator assembly device comprises a base and a mounting frame for fixing a flywheel.

[0008] A support rod is slidably installed on the base, a support seat is fixedly installed on the support rod, a rotating table is installed in the support seat, a plurality of connecting rods in communication with the rotating table are fixedly installed on the outer wall of the rotating table, and air cavities are formed in the connecting rods, and a I-shaped piston is slidably installed in the end of each connecting rod away from the support seat.

[0009] The rotating table is fixedly connected with a control table through a through pipe, a plurality of positioning rods are fixedly installed on the control table, and a positioning table for inserting the I-shaped piston is elastically installed on the end of each positioning rod away from the control table.

[0010] A control block is slidably installed in the rotating table, a guide groove is formed in the control block, a guide block matched with the guide groove is fixedly installed on the inner wall of the rotating table, the inner cavity of the control table is communicated with the inner cavity of the rotating table, a plugging plug for the rotating table is fixedly installed on the guide block, and a gas feeding assembly is arranged on the supporting seat and used for feeding gas towards the rotating table.

[0011] A gas pipe is slidably installed in the I-shaped piston, a blocking frame for blocking the gas pipe is fixedly installed in the positioning table, a gas hole is formed in the gas pipe, a through hole is formed in the positioning table, and a ventilation cavity is formed in the positioning rod.

[0012] The gas feeding assembly comprises a gas pump and a gas feeding pipe, the gas pump is fixedly installed at the top end of the base, one end of the gas feeding pipe is connected with the output end of the gas pump, and the other end of the gas feeding pipe penetrates through the supporting seat and extends into the rotating table.

[0013] A gas channel is formed in the rotating table, a first blocking ball in hollow is elastically installed in the gas channel through a torsional spring, a sector gear is fixedly installed on the outer wall of the gas feeding pipe, a first gear meshed with the sector gear is fixedly installed on the first blocking ball, the control block is connected with the gas feeding pipe through a limiting rod, and the number of the gas channel and the first blocking ball is consistent with that of the connecting rod.

[0014] A sliding table is fixedly installed at the bottom end of the positioning table, a toothed plate is fixedly installed on the outer wall of the sliding table, and a second gear meshed with the toothed plate is fixedly installed on the second blocking ball.

[0015] A cavity provided elastic plugging pad is fixedly installed at the end of the positioning table away from the I-shaped piston, an air inlet groove is formed in the positioning table, and the end of the elastic plugging pad opening is arranged towards the air inlet groove.

[0016] A fixed table is fixedly installed on the mounting frame, the fixed table and the supporting rod are connected through a transmission rod, the supporting rod and the transmission rod are connected through a screw transmission, a third gear is fixedly installed on the transmission rod, and a fourth gear is fixedly installed on the outer wall of the positioning table.

[0017] A ratchet wheel is fixedly installed on the outer wall of the end of the transmission rod extending into the fixed table, a ratchet rod is rotatably installed on the inner wall of the fixed table, a top pressing table is slidably installed in the fixed table, and a top pressing spring is arranged between the top pressing table and the ratchet rod.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. The motor vehicle generator assembly device of the present application, by conveying gas towards the inside of the rotating table, pushing the I-shaped piston towards the inside of the positioning table under the action of air pressure until the I-shaped piston enters the inside of the positioning table, can extrude the gas inside the positioning table, and cooperate with multiple positioning rods and positioning tables to disperse stress through symmetrical load, thereby avoiding the uneven stress during flywheel installation, causing cracks, and improving the efficiency of flywheel installation. At the same time, the flywheel installation method driven by air pressure can avoid the problems of flywheel gear ring deformation, micro-cracks or crankshaft bearing pre-tightening force loss caused by hammering.

[0020] 2. The motor vehicle generator assembly device of the present application, by sending gas into the inside of the rotating table through the gas pump, first entering the inside of the air duct through two first blocking balls in a vertical state, then pushing the two I-shaped pistons, the gas can preliminarily symmetrically press the surface of the flywheel, then the gas pipe is blocked by the blocking frame, the gas inside the connecting rod reenters the inside of the rotating table, and the control block is pressed, cooperating with the guide groove and the guide block to drive the rotating table to rotate. At this time, the four connecting rods complete rotation, and the above operation is repeated to circumferentially press the flywheel. By circumferentially pressing the flywheel, the pressure is evenly distributed on the outer edge of the flywheel, reducing the risk of hole deformation, thereby ensuring that the flywheel and the crankshaft taper / cylindrical surface fit more closely to further improve the installation quality of the flywheel. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in conjunction with the drawings.

[0022] Figure 1 is a perspective view of the present application;

[0023] Figure 2 is a sectional view of the connecting rod in the present application;

[0024] Figure 3 is a sectional view of the connecting rod in the present application; Figure 2 is an enlarged view of A in the present application;

[0025] Figure 4 is a structural schematic view of the third gear in the present application;

[0026] Figure 5 is an enlarged view of B in the present application; Figure 4

[0027] Figure 6 is an enlarged view of C in the present application; Figure 4

[0028] ​​Figure 7 This is a cross-sectional view of the fixed platform in this invention.

[0029] In the diagram: 1. Base; 2. Mounting bracket; 3. Flywheel; 4. Support rod; 5. Air pump; 6. Support base; 7. Connecting rod; 8. Air chamber; 9. I-beam piston; 10. Control console; 11. Positioning rod; 12. Transmission rod; 13. Rotary table; 14. Third gear; 15. Fixed platform; 16. Ratchet; 17. Ratchet; 18. Top pressure spring; 19. Top pressure platform; 20. Air supply pipe; 21. Control block; 22. Limit rod ; 23. Guide groove; 24. Guide block; 25. Sector gear; 26. First gear; 27. First blocking ball; 28. Air passage; 29. ​​Sealing plug; 30. Guide tube; 31. Air pipe; 32. Air hole; 33. Positioning platform; 34. Blocking frame; 35. Elastic sealing pad; 36. Air inlet groove; 37. Slide table; 38. Tooth plate; 39. Second blocking ball; 40. Second gear; 41. Ventilation chamber; 42. Opening. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0031] like Figures 1 to 7 As shown in the figure, a motor vehicle generator assembly device according to an embodiment of the present invention includes a base 1 and a mounting bracket 2 for fixing a flywheel 3;

[0032] A support rod 4 is slidably mounted on the base 1, and a support seat 6 is fixedly mounted on the support rod 4. A rotating table 13 is installed inside the support seat 6. Multiple connecting rods 7 that communicate with the rotating table 13 are fixedly mounted on the outer wall of the rotating table 13, and each of them has an air chamber 8. An I-shaped piston 9 is slidably mounted inside the end of the multiple connecting rods 7 away from the support seat 6.

[0033] There are four connecting rods 7, and each of the four connecting rods 7 has an air chamber 8 inside. The air chambers 8 inside the four connecting rods 7 are all connected to the inner cavity of the rotating table 13. The end of the connecting rod 7 away from the rotating table 13 is bent. The I-shaped piston 9 is slidably installed inside the bent part of the connecting rod 7. By supplying gas toward the inside of the rotating table 13, the I-shaped piston 9 can be pushed to slide inside the connecting rod 7 by the air pressure.

[0034] A control console 10 is fixedly connected to the rotating table 13 via a guide tube 30. Multiple positioning rods 11 are fixedly installed on the control console 10. Each of the multiple positioning rods 11 has a positioning platform 33 for inserting the I-shaped piston 9 at the end away from the control console 10. The positioning platform 33 is hollow. The number of positioning rods 11 is the same as that of the connecting rods 7.

[0035] The positioning rod 11 is provided with four, and each positioning rod 11 is provided with a positioning table 33, the inner wall of the positioning table 33 is attached to the outer wall of the I-shaped piston 9, and under the action of the through pipe 30, the position of the connecting rod 7 corresponds to the position of the positioning rod 11, when one end of the positioning table 33 is attached to one end of the flywheel 3, at this time, the gas is transported towards the inside of the rotating table 13, under the action of the gas pressure, the I-shaped piston 9 is pushed to slide towards the inside of the positioning table 33, until the I-shaped piston 9 enters the inside of the positioning table 33, with the sliding of the I-shaped piston 9, the gas in the inside of the positioning table 33 can be extruded, then the flywheel 3 is pressed by the gas pressure, and the plurality of positioning rods 11 and positioning tables 33 are cooperatively arranged, the stress is dispersed by the symmetrical load, so that when the flywheel 3 is installed, the uneven stress is avoided to cause the crack, and the efficiency of the installation of the flywheel 3 is improved, at the same time, the flywheel 3 is installed by the gas pressure, compared with the installation mode of using the hammering rod to hammer the flywheel 3, the problems of the deformation of the gear ring of the flywheel 3, the micro-cracks or the loss of the pre-tightening force of the crankshaft bearing caused by the hammering can be avoided.

[0036] The inside of the rotating table 13 is slidably installed with a control block 21, the control block 21 is provided with a guide groove 23, the inner wall of the rotating table 13 is fixedly installed with a guide block 24 matched with the guide groove 23, the inner cavity of the control table 10 is communicated with the inner cavity of the rotating table 13, the guide block 24 is fixedly installed with a plugging plug 29 for the rotating table 13, and the supporting seat 6 is provided with a gas feeding assembly for feeding gas towards the inside of the rotating table 13.

[0037] The control block 21 and the rotating table 13 are provided with a reset spring, when the control block 21 slides in the inside of the rotating table 13, through the cooperation of the guide groove 23 and the guide block 24 (similar to the operation structure of a ball pen), the rotating table 13 can be rotated, and the connecting rod 7 is rotated, the control table 10 is rotated through the through pipe 30, the positioning rod 11 and the positioning table 33 are synchronously rotated through the control table 10, the I-shaped piston 9 is pushed in the inside of the positioning table 33 through the gas pressure, the flywheel 3 is pressed by the gas pressure, the flywheel 3 is circumferentially pressed, the pressure is uniformly distributed on the outer edge of the flywheel 3, the risk of the inner hole deformation is reduced, the flywheel 3 and the taper / cylindrical surface of the crankshaft are attached more closely, and the installation quality of the flywheel 3 is further improved.

[0038] As a preferred embodiment in the application, the inside of the I-shaped piston 9 is slidably installed with a gas pipe 31, the inside of the positioning table 33 is fixedly installed with a blocking frame 34 for blocking the gas pipe 31, the gas pipe 31 is provided with a gas hole 32, the positioning table 33 is provided with a through port 42, the inside of the positioning rod 11 is provided with a gas cavity 41, and the inside of the positioning rod 11 is rotatably installed with a hollow second blocking ball 39.

[0039] The air pipe 31 extends out of the outer wall of the I-shaped piston 9 near one end of the positioning table 33, and the other end is located inside the I-shaped piston 9. When the I-shaped piston 9 slides to the inside of the positioning table 33, the air pipe 31 will first contact the blocking frame 34, and under the continuous pressure, the air pipe 31 will slide inside the I-shaped piston 9 until the air hole 32 on the air pipe 31 slides out of the inside of the I-shaped piston 9. At this time, the gas inside the connecting rod 7 will enter the inside of the air pipe 31 through the air hole 32, and finally enter the inside of the positioning table 33.

[0040] Since the positioning table 33 is elastically mounted on the positioning rod 11, when the positioning table 33 approaches and presses towards the flywheel 3, the positioning table 33 will move on the positioning rod 11 away from the flywheel 3 at this time. After the flywheel 3 is gradually installed on the generator by the I-shaped piston 9 through air pressure, the flywheel 3 will move away from the positioning rod 11, and under the action of elasticity, it will push the positioning table 33 to move with the flywheel 3 until the through hole 42 moves above the second blocking ball 39. At this time, rotating the second blocking ball 39 makes the inner cavity of the positioning table 33 communicate with the air chamber 41, and the gas will enter the inside of the control console 10 through the air chamber 41, and then re-enter the inside of the rotating table 13 through the through pipe 30. With the increase of air pressure, it will push the control block 21 to move away from the control console 10, cooperate with the guide groove 23 and the guide block 24 to drive the rotating table 13 to rotate, and through the circumferential pressure on the flywheel 3, the pressure is evenly distributed on the outer edge of the flywheel 3, reducing the risk of hole deformation, thereby ensuring that the flywheel 3 is more closely attached to the taper / cylindrical surface of the crankshaft, further improving the installation quality of the flywheel 3.

[0041] The air supply assembly includes an air pump 5 and an air supply pipe 20. The air pump 5 is fixedly installed at the top end of the base 1, one end of the air supply pipe 20 is connected with the output end of the air pump 5, and the other end penetrates through the support seat 6 and extends into the rotating table 13.

[0042] The air pump 5 can send gas to the inside of the rotating table 13 through the air supply pipe 20. The air supply pipe 20 is fixedly connected with the support seat 6.

[0043] The rotating table 13 is provided with an air channel 28. The hollow first blocking ball 27 is elastically mounted in the air channel 28 by a torsion spring. The outer wall of the air supply pipe 20 is fixedly provided with a sector gear 25. The first blocking ball 27 is fixedly provided with a first gear 26 engaged with the sector gear 25. The control block 21 is connected with the air supply pipe 20 through a limiting rod 22. The number of the air channel 28 and the first blocking ball 27 is consistent with the connecting rod 7.

[0044] The rotating table 13 is connected with the inner cavity of the connecting rod 7 through the air channel 28. Since four connecting rods 7 are provided, the air channel 28 and the first blocking ball 27 are also provided with four.

[0045] The openings on two of the first blocking balls 27 are vertical and symmetrically arranged; the openings on the other two first blocking balls 27 are horizontal and symmetrically arranged as well.

[0046] When gas enters the rotating platform 13, it first passes through the two vertically positioned first blocking balls 27 into the air passage 28, then pushes the two I-pistons 9. The gas symmetrically presses against the surface of the flywheel 3. The blocking bracket 34 obstructs the air pipe 31, causing the gas inside the connecting rod 7 to enter the positioning platform 33 through the air hole 32 until the outlet 42 aligns with the second blocking ball 39. At this point, the gas enters the control console 10, re-enters the rotating platform 13 through the guide pipe 30, and presses against the control block 21. This, combined with the guide groove 23 and guide block 24, drives the rotating platform 13 to rotate (the rotation angle can be changed by altering the angle of the guide groove 23). (The technical means known to those skilled in the art will not be elaborated upon here.) At this time, with the cooperation of the sector gear 25 and the first gear 26, the first blocking ball 27, which was originally in a vertical state, will be switched to a horizontal state. When the control block 21 moves toward the sector gear 25, the sealing plug 29 will be pulled out from the inside of the rotating table 13. The gas on the side of the control block 21 away from the sector gear 25 will be discharged. Under the action of elasticity, the control block 21 will be pulled back to its original position. At this time, the four connecting rods 7 will complete the rotation. By repeating the above operation, the flywheel 3 can be circumferentially pressed, and the installation of the flywheel 3 can be completed while protecting the flywheel 3.

[0047] In a preferred embodiment of the present invention, a slide 37 is fixedly installed at the bottom of the positioning platform 33, a toothed plate 38 is fixedly installed on the outer wall of the slide 37, and a second gear 40 that meshes with the toothed plate 38 is fixedly installed on the second blocking ball 39.

[0048] A tension spring is provided between the slide table 37 and the connecting rod 7. When the positioning table 33 presses against the flywheel 3, it will cause the slide table 37 to slide on the connecting rod 7 in a direction away from the flywheel 3. At the same time, the tension spring will deform and store elastic potential energy until the flywheel 3 is pushed. The reset spring releases the elastic potential energy and causes the slide table 37 and the positioning table 33 to move in the direction of the flywheel 3. At the same time, the opening 42 will correspond to the second blocking ball 39. When the slide table 37 slides in the direction of the second blocking ball 39, it will cause the toothed plate 38 to mesh with the second gear 40, causing the second blocking ball 39 to rotate, so that the opening is in a vertical state, connecting the inner cavity of the positioning table 33 with the inner cavity of the positioning rod 11.

[0049] As a preferred embodiment in the present application, the positioning table 33 is fixedly installed with an elastic sealing pad 35 with a cavity at one end of the I-shaped piston 9, and the inside of the positioning table 33 is provided with an air inlet groove 36, and the elastic sealing pad 35 is provided with an opening at one end facing the air inlet groove 36.

[0050] When the I-shaped piston 9 slides in the inside of the positioning table 33 and drives the flywheel 3 to be installed by air pressure, at this time, the gas enters the inside of the elastic sealing pad 35 through the air inlet groove 36, and the elastic sealing pad 35 is inflated and adheres to the flywheel 3, thereby improving the sealing effect between the positioning table 33 and the flywheel 3, and further improving the effect of driving the flywheel 3 by air pressure.

[0051] As a preferred embodiment in the present application, the mounting rack 2 is fixedly installed with a fixed table 15, the fixed table 15 is connected with the supporting rod 4 through the transmission rod 12, the supporting rod 4 is connected with the transmission rod 12 through screw transmission, the transmission rod 12 is fixedly installed with a third gear 14, and the outer wall of the positioning table 33 is fixedly installed with a fourth gear;

[0052] When the rotating table 13 is driven to rotate, the control table 10 is synchronously rotated through the through pipe 30, at this time, the fourth gear provided outside the control table 10 is engaged with the third gear 14, and the third gear 14 is driven to rotate, the transmission rod 12 drives the supporting rod 4 to slide on the base 1 through screw transmission, and through the movement, the connecting rod 7 and the positioning table 33 can be simultaneously moved along the track of the flywheel 3 to install the flywheel 3 by air pressure.

[0053] The outer wall of one end of the transmission rod 12 extending into the inside of the fixed table 15 is fixedly installed with a ratchet wheel 16, the inner wall of the fixed table 15 is rotatably installed with a ratchet rod 17, and the inside of the fixed table 15 is slidably installed with a pressing table 19, and the pressing table 19 is provided with a pressing spring 18 between the ratchet rod 17.

[0054] The ratchet rod 17 can block the clockwise direction of the ratchet wheel 16, the pressing spring 18 provided at the top end of the ratchet rod 17 can make the ratchet rod 17 always keep away from the ratchet wheel 16, when the supporting rod 4 moves towards the mounting rack 2, at this time, the transmission rod 12 drives the ratchet wheel 16 to rotate counterclockwise, when the flywheel 3 is fixed on the mounting rack 2, at this time, the flywheel 3 presses the pressing table 19, and the pressing spring 18 presses the ratchet rod 17, so that the ratchet rod 17 blocks the ratchet wheel 16, when the flywheel 3 is installed, the pressing table 19 is not pressed, the pressing spring 18 releases the elastic potential energy, so that the ratchet rod 17 is unblocked from the ratchet wheel 16, at this time, the transmission rod 12 can rotate clockwise (manual or combined with a coil spring reset), so as to drive the supporting rod 4 to reset, thereby facilitating subsequent use.

[0055] Working principle: through the air pump 5 will be sent into the internal rotation platform 13, will first pass through two openings for the vertical state of the first blocking ball 27 into the internal airway 28, then push two I piston 9, the gas can be on the surface of the flywheel 3 preliminary symmetric top pressure, then through the blocking frame 34 to the air pipe 31, the gas in the connecting rod 7 inside the air hole 32 into the positioning platform 33 inside, until the mouth 42 and the second blocking ball 39 corresponding, at this time the gas into the internal control console 10, through the through pipe 30 re-enter the internal rotation platform 13, and control block 21 top pressure, with the guide groove 23 and guide block 24 drive rotation platform 13 rotation, at this time in the fan-shaped gear 25 and the first gear 26 cooperation, will first open for the vertical state of the first blocking ball 27 switch to the horizontal state, the first blocking ball 27 originally in the horizontal state is switched to the vertical state, at this time four connecting rods 7 complete rotation, repeat the above operation, can be on the flywheel 3 circumferential top pressure, through the flywheel 3 circumferential top pressure, the pressure is evenly distributed in the flywheel 3 outer edge, reduce the risk of hole deformation, in turn ensure that the flywheel 3 and crankshaft taper / cylinder surface fit more closely to further improve the installation quality of flywheel 3.

[0056] The above front, back, left, right, up, down are based on the drawings of the specification Figure 1 As the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0058] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, the above examples and descriptions in the specification are only to illustrate the principles of the present application, without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, which fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A motor vehicle generator assembly device, comprising a base (1) and a mounting bracket (2) for fixing a flywheel (3); characterized in that A support rod (4) is slidably installed on the base (1), a support seat (6) is fixedly installed on the support rod (4), a rotating table (13) is installed inside the support seat (6), a plurality of connecting rods (7) in communication with the rotating table (13) are fixedly installed on the outer wall of the rotating table (13), and air cavities (8) are formed in the connecting rods (7), and a I-shaped piston (9) is slidably installed in the end of each connecting rod (7) away from the support seat (6). A control console (10) is fixedly connected to the rotating table (13) through a communication pipe (30), a plurality of positioning rods (11) are fixedly installed on the control console (10), a positioning table (33) for inserting the I-shaped piston (9) is elastically installed at the end of each positioning rod (11) away from the control console (10), the positioning table (33) is hollow, and the number of the positioning rods (11) is consistent with that of the connecting rods (7). A control block (21) is slidably installed in the rotating table (13), a guide groove (23) is formed in the control block (21), a guide block (24) is fixedly installed on the inner wall of the rotating table (13) and matched with the guide groove (23), the inner cavity of the control console (10) is in communication with the inner cavity of the rotating table (13), a blocking plug (29) for the rotating table (13) is fixedly installed on the guide block (24), and a gas feeding assembly is arranged on the support seat (6) and used for feeding gas into the rotating table (13).

2. An automotive alternator assembly as defined in claim 1, wherein: An air pipe (31) is slidably installed in the I-shaped piston (9), a blocking frame (34) for blocking the air pipe (31) is fixedly installed in the inside of the positioning table (33), an air hole (32) is formed in the air pipe (31), a through hole (42) is formed in the positioning table (33), and an air chamber (41) is formed in the inside of the positioning rod (11), and a hollow second blocking ball (39) is rotatably installed in the inside of the positioning rod (11).

3. An automotive alternator assembly as defined in claim 2 wherein: The gas feeding assembly comprises a gas pump (5) and a gas feeding pipe (20), the gas pump (5) is fixedly installed at the top end of the base (1), one end of the gas feeding pipe (20) is connected with the output end of the gas pump (5), and the other end penetrates through the support seat (6) and extends into the inside of the rotating table (13).

4. An automotive alternator assembly as defined in claim 3, wherein: An air channel (28) is formed in the rotating table (13), a hollow first blocking ball (27) is elastically installed in the inside of the air channel (28) through a torsional spring, a sector gear (25) is fixedly installed on the outer wall of the gas feeding pipe (20), a first gear (26) engaged with the sector gear (25) is fixedly installed on the first blocking ball (27), the control block (21) is connected with the gas feeding pipe (20) through a limiting rod (22), and the number of the air channel (28) and the first blocking ball (27) is consistent with that of the connecting rod (7).

5. An automotive alternator assembly as defined in claim 4 wherein: The bottom end of the positioning table (33) is fixedly installed with a sliding table (37), the outer wall of the sliding table (37) is fixedly installed with a toothed plate (38), and the second blocking ball (39) is fixedly installed with a second gear (40) engaged with the toothed plate (38).

6. An automotive alternator assembly as defined in claim 5, wherein: The end of the positioning table (33) away from the I-shaped piston (9) is fixedly installed with an elastic sealing pad (35) provided with a cavity, and the inside of the positioning table (33) is provided with an air inlet groove (36), and the end of the elastic sealing pad (35) facing the air inlet groove (36) is provided with an opening.

7. An automotive alternator assembly as defined in claim 6 wherein: The fixed table (15) is fixedly installed on the mounting frame (2), the fixed table (15) and the supporting rod (4) are connected through the transmission rod (12), the supporting rod (4) and the transmission rod (12) are connected through a screw transmission, the third gear (14) is fixedly installed on the transmission rod (12), and the outer wall of the positioning table (33) is fixedly installed with a fourth gear; The end of the transmission rod (12) extending into the inside of the fixed table (15) is fixedly installed with a ratchet wheel (16), the inner wall of the fixed table (15) is rotatably installed with a ratchet rod (17), the inside of the fixed table (15) is slidably installed with a pressing table (19), and the pressing spring (18) is arranged between the pressing table (19) and the ratchet rod (17).

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