A rotor torsional vibration test device for automobile generator rotor

Abstract

The present invention discloses a rotor torsional vibration test device for automobile generator rotors, which relates to the technical field of generator rotors, and comprises a bottom plate, wherein mounting holes are provided at the four corners of the bottom plate, a control console is fixedly installed on the top surface of the bottom plate, a processing table is fixedly installed at the middle position of the top surface of the bottom plate, side seats are fixedly connected to the top two sides of the processing table, a pair of fixed rods are fixedly connected between the side seats, a support rod is fixedly connected to the rear position of the top surface of the bottom plate, a sleeve is rotatably connected to the top position of the support rod, one end of the sleeve is fixedly connected to a support plate, and a sensor is fixedly installed at the top position of the support plate. The present invention has a reasonable structure, and the rotor can be placed by adjusting the assembly, and then the rotor is tested by the positioning assembly and the driving assembly.

Description

Technical Field

[0001] The invention relates to the technical field of generator rotors, and in particular to a rotor torsional vibration testing device for an automobile generator rotor. Background Art

[0002] The main function of the generator rotor is to generate a rotating magnetic field, which is composed of components such as the rotor core, pole windings, collector rings, fans and shafts. When the rotor rotates, it cuts the magnetic field formed in the stator winding, thereby inducing three-phase alternating current in the stator winding. This induced potential is then led out through the wiring terminals to form a usable current.

[0003] The existing torsional vibration is a common vibration phenomenon in rotor dynamics. Testing the torsional vibration phenomenon of the rotor shaft system is conducive to extracting and mastering the vibration and motion characteristics of the rotor, and effectively predicting and preventing the possibility of its failure. However, most torsional vibration test experimental devices are not convenient for fixing the rotor, and are prone to detachment during the rotation test, which may even affect the inherent characteristics of the rotor and the test accuracy of the torsional vibration degree. Summary of the invention

[0004] The purpose of the present application is to provide a rotor torsional vibration testing device for an automobile generator rotor, which enables the rotor to be placed through an adjustment component and then tested through a positioning component and a driving component.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a rotor torsional vibration testing device for an automobile generator rotor, comprising a base plate, mounting holes are provided at the four corners of the base plate, a control console is fixedly installed on the top surface of the base plate, a processing table is fixedly installed on the middle position of the top surface of the base plate, side seats are fixedly connected to the top two sides of the processing table, a pair of fixing rods are fixedly connected between the side seats, a support rod is fixedly connected to the rear side of the top surface of the base plate, a sleeve is rotatably connected to the top position of the support rod, one end of the sleeve is fixedly connected to a support plate, and a sensor is fixedly installed on the top position of the support plate; it also includes an adjustment component, a positioning component and a drive component, the adjustment component is arranged on the processing table for placing the rotor, the positioning component is arranged on the fixing rod for limiting the position of the rotor, and the drive component is arranged on the base plate for testing the rotor.

[0006] Preferably, the adjustment assembly includes a main shaft rotatably connected to the middle position of the processing table, a gear is fixedly connected to the middle position of the main shaft, a toothed plate is meshed on the gear, a pull block is fixedly connected to the middle position of one side of the toothed plate, the pull block is threadedly connected to a threaded rod, both ends of the threaded rod are rotatably connected to a limit seat, and one end of the threaded rod is fixedly connected to an adjustment disk.

[0007] Preferably, a fixed plate is fixedly connected to the top position of the main shaft, a pair of arm plates are symmetrically fixedly connected to the edge of the fixed plate, the other end of the pair of arm plates is fixedly connected to a docking shaft, the bottom end of the docking shaft is sleeved with a first ring, a linkage plate is fixedly connected to the surface of the first ring, and the other end of the linkage plate is fixedly connected to a second ring.

[0008] Preferably, the positioning assembly includes a pulley slidably connected to the fixed rod, the pulley is rotatably connected to the docking seat, the top of the docking seat is fixedly connected to a limit plate, one end of the limit plate is fixedly connected to the carrier plate, the middle position of the bottom end of the carrier plate is fixedly connected to an axle pin, and the second ring is sleeved on the axle pin.

[0009] Preferably, a support plate is fixedly connected to the middle position of the top surface of the carrier plate, and a U-shaped groove opening upward is provided on the support plate. A pair of first shaft seats are symmetrically fixedly connected to the top surface of the carrier plate, a sliding rod is fixedly connected between the pair of first shaft seats, a pair of sleeve blocks are slidably connected to the sliding rod, and a pair of pull columns are fixedly connected to the outer surfaces of the sleeve blocks, and a first spring is sleeved on the sliding rod, and two ends of the first spring are respectively fixedly connected to one side of the first shaft seat and one side of the sleeve block.

[0010] Preferably, a ferrule is fixedly connected to the middle position of the sliding rod, a positioning column is fixedly connected to the surface of the ferrule at a lateral position, one end of the positioning column is rotatably connected to a turntable, a pair of guide grooves are symmetrically opened on the turntable, and one end of the pulling column is slidably connected to the inside of the guide groove.

[0011] Preferably, a pair of clamping plates are fixedly connected to the top positions of the sleeve blocks, and the top ends of the clamping plates are rotatably connected to guide wheels.

[0012] Preferably, the driving assembly includes two groups of rod bodies fixedly connected to the base plate, the top ends of the rod bodies are fixedly connected to brackets, a driving motor is fixedly installed at the middle position of the bottom surface of the bracket, the output end of the driving motor is fixedly connected to a rotating rod, both ends of the rotating rod are rotatably connected to a fixed seat, the top end of the fixed seat is fixedly connected to the bracket, and a sliding groove is provided on the fixed seat.

[0013] Preferably, a second axle seat is fixedly connected to the outer side of the fixed seat, a side rod is fixedly connected to the second axle seat, a slider is slidably connected to the side rod, a second spring is sleeved on the side rod, and both ends of the second spring are respectively fixedly connected to the bottom surface of the second axle seat and the top surface of the slider.

[0014] Preferably, the inner side of the slider is rotatably connected to a driven shaft, one end of the driven shaft extends to the inner side of the fixed seat through a slide groove, one end of the driven shaft is fixedly connected to a driving wheel, a first pulley is fixedly connected to the driven shaft, a transmission belt is sleeved on the first pulley, the top end of the transmission belt is sleeved on a second pulley, and the second pulley is fixedly connected to the rotating rod.

[0015] In summary, the present invention has the following beneficial effects:

[0016] 1. The present invention has a reasonable structure. When the distance between the carrier plates needs to be adjusted, the adjusting disk is rotated to drive the threaded rod to rotate. A pull block is threadedly connected to the threaded rod. The pull block is moved by the rotation of the threaded rod. The pull block is fixedly connected to the toothed plate, and the toothed plate and the gear are meshed with each other. The movement of the pull block drives the main shaft on the gear to rotate through the toothed plate. The rotation of the main shaft drives the arm plate to rotate through the fixed disk, so that the arm plate moves through the linkage plate on the first ring to push the shaft pin on the second ring to move, so that the distance between the carrier plates can be adjusted.

[0017] 2. In the present invention, when it is necessary to place the two ends of the rotor inside the U-shaped groove, the turntable is first rotated, and the pull column slides inside the guide groove through the rotation of the turntable, so that the sleeve block on the pull column slides on the slide rod, and then the two ends of the rotor are placed inside the U-shaped groove, the turntable is released, and the sleeve block is restored to the original position through the elastic force of the first spring, so that the guide wheels on the clamping plate are attached to the surfaces of the two ends of the rotor, and the position of the rotor is preliminarily positioned;

[0018] 3. In the present invention, when it is necessary to test the rotation of the rotor, driving wheels are attached to the bottom positions of both ends of the rotor, and then the driving motor is operated to rotate the rotating rod, and a second pulley is fixedly connected to the rotating rod, and the second pulley is driven to rotate by the rotation of the transmission belt. A transmission belt is sleeved on the second pulley, and the bottom end of the transmission belt is sleeved on the first pulley. The rotation of the second pulley drives the first pulley to rotate through the transmission belt, thereby facilitating the high-speed rotation of the driving wheel on the driven shaft to drive the rotor to perform testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the test device;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the test device from a side view;

[0022] Figure 3 It is a schematic diagram of the rear-view stereoscopic structure of the test device;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the base plate;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of the carrier plate;

[0025] Figure 6 is a schematic diagram of the main axis three-dimensional structure;

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the bracket when viewed from above;

[0027] Figure 8 for Figure 7 Enlarged structural diagram at A in the middle.

[0028] In the figure: 1, bottom plate; 101, mounting hole; 102, control console; 103, processing table; 104, side seat; 105, fixing rod; 106, supporting rod; 107, sleeve seat; 108, support plate; 109, sensor; 2, main shaft; 201, gear; 202, tooth plate; 203, pull block; 204, threaded rod; 205, limit seat; 206, adjustment plate; 207, fixing plate; 208, arm plate; 209, docking shaft; 210, first ring; 211, linkage plate; 212, second ring; 3, pulley; 301, docking seat; 302, limit plate; 303, loading plate; 304, shaft pin; 305 , support plate; 306, U-shaped groove; 307, first shaft seat; 308, slide bar; 309, sleeve block; 310, pull column; 311, first spring; 312, clamping sleeve; 313, positioning column; 314, turntable; 315, guide groove; 316, clamping plate; 317, guide wheel; 4, rod body; 401, bracket; 402, drive motor; 403, rotating rod; 404, fixed seat; 405, slide groove; 406, second shaft seat; 407, side rod; 408, slider; 409, second spring; 410, driven shaft; 411, drive wheel; 412, first pulley; 413, transmission belt; 414, second pulley. DETAILED DESCRIPTION

[0029] 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.

[0030] Example: Reference Figure 1 - Figure 8 The rotor torsional vibration testing device for an automobile generator rotor shown in the figure comprises a base plate 1, mounting holes 101 are provided at the four corners of the base plate 1, a control console 102 is fixedly installed on the top surface of the base plate 1, a processing table 103 is fixedly installed at the middle position of the top surface of the base plate 1, side seats 104 are fixedly connected to the top two sides of the processing table 103, a pair of fixing rods 105 are fixedly connected between the side seats 104, a support rod 106 is fixedly connected to the rear side of the top surface of the base plate 1, a sleeve seat 107 is rotatably connected to the top position of the support rod 106, one end of the sleeve seat 107 is fixedly connected to a support plate 108, and a sensor 109 is fixedly installed at the top position of the support plate 108; it also comprises an adjusting component, a positioning component and a driving component, the adjusting component is arranged on the processing table 103 for placing the rotor, the positioning component is arranged on the fixing rod 105 for limiting the position of the rotor, and the driving component is arranged on the base plate 1 for testing the rotor.

[0031] Specifically, it should be noted that the console 102, the sensor 109 and the drive motor 402 are electrically connected through wires, and the specific working principles therebetween are referenced through the existing technology and will not be elaborated on here. The rotor is driven to rotate by the operation of the drive motor 402, and the torsional vibration of the rotor can be tested through the sensor 109.

[0032] As an implementation method in this embodiment, the adjustment component includes a main shaft 2 rotatably connected to the middle position of the processing table 103, a gear 201 is fixedly connected to the middle position of the main shaft 2, a tooth plate 202 is meshed on the gear 201, a pull block 203 is fixedly connected to the middle position of one side of the tooth plate 202, the pull block 203 is threadedly connected to the threaded rod 204, both ends of the threaded rod 204 are rotatably connected to the limit seat 205, one end of the threaded rod 204 is fixedly connected to an adjustment disk 206, the top position of the main shaft 2 is fixedly connected to a fixed disk 207, the edge of the fixed disk 207 is symmetrically fixedly connected to a pair of arm plates 208, the other end of the pair of arm plates 208 is fixedly connected to a docking shaft 209, the bottom end of the docking shaft 209 is sleeved with a first ring 210, the surface of the first ring 210 is fixedly connected to a linkage plate 211, and the other end of the linkage plate 211 is fixedly connected to a second ring 212.

[0033] Specifically, when the distance between the carrier plates 303 needs to be adjusted, the adjusting disk 206 is rotated to drive the threaded rod 204 to rotate. The pull block 203 is threadedly connected to the threaded rod 204. The pull block 203 is moved by the rotation of the threaded rod 204. The pull block 203 is fixedly connected to the tooth plate 202, and the tooth plate 202 and the gear 201 are meshed with each other. The movement of the pull block 203 drives the main shaft 2 on the gear 201 to rotate through the tooth plate 202. The rotation of the main shaft 2 drives the arm plate 208 to rotate through the fixed disk 207, so that the arm plate 208 moves through the linkage plate 211 on the first ring 210 to push the shaft pin 304 on the second ring 212 to move, thereby facilitating the adjustment of the distance between the carrier plates 303.

[0034] As an implementation method in this embodiment, the positioning component includes a pulley 3 slidably connected to the fixed rod 105, the pulley 3 is rotatably connected to the docking seat 301, the top of the docking seat 301 is fixedly connected to the limit plate 302, one end of the limit plate 302 is fixedly connected to the loading plate 303, the middle position of the bottom end of the loading plate 303 is fixedly connected with an axle pin 304, the axle pin 304 is sleeved with a second ring 212, the middle position of the top surface of the loading plate 303 is fixedly connected with a support plate 305, the support plate 305 is provided with a U-shaped groove 306 opening upward, the top surface of the loading plate 303 is symmetrically fixedly connected with a pair of first axle seats 307, a sliding rod 308 is fixedly connected between the pair of first axle seats 307, and a sliding rod 308 is slidably connected to the sliding rod 308 A pair of sleeve blocks 309 are connected, and a pulling column 310 is fixedly connected to the outer surface of the pair of sleeve blocks 309. A first spring 311 is sleeved on the slide rod 308, and the two ends of the first spring 311 are respectively fixedly connected to one side of the first shaft seat 307 and one side of the sleeve block 309. A clamping sleeve 312 is fixedly connected to the middle position of the slide rod 308, and a positioning column 313 is fixedly connected to the surface of the clamping sleeve 312 at a lateral position. One end of the positioning column 313 is rotatably connected to a turntable 314, and a pair of guide grooves 315 are symmetrically opened on the turntable 314. One end of the pulling column 310 is slidably connected to the inside of the guide groove 315. A splint 316 is fixedly connected to the top position of the pair of sleeve blocks 309, and a guide wheel 317 is rotatably connected to the top of the splint 316.

[0035] Specifically, when it is necessary to place the two ends of the rotor inside the U-shaped groove 306, first rotate the turntable 314, and the pull column 310 slides inside the guide groove 315 through the rotation of the turntable 314, so that the sleeve block 309 on the pull column 310 can slide on the slide rod 308, and then place the two ends of the rotor inside the U-shaped groove 306, release the turntable 314, and restore the sleeve block 309 to its original position through the elastic force of the first spring 311, so that the guide wheels 317 on the clamping plate 316 can fit the surfaces of the two ends of the rotor to perform preliminary positioning of the rotor.

[0036] As an implementation method in this embodiment, the driving component includes two groups of rod bodies 4 fixedly connected to the base plate 1, the top of the rod body 4 is fixedly connected to the bracket 401, and a driving motor 402 is fixedly installed at the middle position of the bottom surface of the bracket 401, and the output end of the driving motor 402 is fixedly connected to a rotating rod 403, and the two ends of the rotating rod 403 are rotatably connected to a fixed seat 404, the top of the fixed seat 404 is fixedly connected to the bracket 401, and a sliding groove 405 is provided on the fixed seat 404, and a second shaft seat 406 is fixedly connected to the outer side of the fixed seat 404, and a side rod 407 is fixedly connected to the second shaft seat 406, and a The slider 408 and the side rod 407 are sleeved with a second spring 409, and the two ends of the second spring 409 are respectively fixedly connected to the bottom surface of the second shaft seat 406 and the top surface of the slider 408, and the inner side of the slider 408 is rotatably connected with a driven shaft 410, one end of the driven shaft 410 extends to the inner side of the fixed seat 404 through the slide groove 405, and one end of the driven shaft 410 is fixedly connected to a driving wheel 411, and the driven shaft 410 is fixedly connected with a first pulley 412, and the first pulley 412 is sleeved with a transmission belt 413, and the top end of the transmission belt 413 is sleeved on the second pulley 414, and the second pulley 414 is fixedly connected to the rotating rod 403.

[0037] Specifically, when the rotor rotation test is required, a driving wheel 411 is attached to the bottom position of both ends of the rotor, and then the driving motor 402 is operated to rotate the rotating rod 403. A second pulley 414 is fixedly connected to the rotating rod 403, and the second pulley 414 is driven to rotate by the rotation of the transmission belt 413. A transmission belt 413 is sleeved on the second pulley 414, and the bottom end of the transmission belt 413 is sleeved on the first pulley 412. The rotation of the second pulley 414 drives the first pulley 412 to rotate through the transmission belt 413, thereby facilitating the high-speed rotation of the driving wheel 411 on the driven shaft 410 to drive the rotor to perform the test.

[0038] Working principle of the present invention: when the distance between the carrier plates 303 needs to be adjusted, the adjusting disk 206 is rotated to drive the threaded rod 204 to rotate, and the pulling block 203 is threadedly connected to the threaded rod 204, and the pulling block 203 is driven to move by the rotation of the threaded rod 204, and the pulling block 203 is fixedly connected to the toothed plate 202, and the toothed plate 202 and the gear 201 are meshed with each other, and the movement of the pulling block 203 drives the main shaft 2 on the gear 201 to rotate through the toothed plate 202, and the rotation of the main shaft 2 drives the arm plate 208 to rotate through the fixed disk 207, so that the arm plate 208 moves through the linkage plate 211 on the first ring 210 to push the shaft pin 304 on the second ring 212 to move, so as to facilitate the adjustment of the distance between the carrier plates 303;

[0039] When it is necessary to place the two ends of the rotor inside the U-shaped groove 306, firstly rotate the turntable 314, and the pull column 310 slides inside the guide groove 315 by the rotation of the turntable 314, so that the sleeve block 309 on the pull column 310 slides on the slide bar 308, and then the two ends of the rotor are placed inside the U-shaped groove 306, and the turntable 314 is released, and the sleeve block 309 is restored to the original position by the elastic force of the first spring 311, so that the guide wheels 317 on the clamping plate 316 are attached to the surfaces of the two ends of the rotor, and the position of the rotor is preliminarily positioned;

[0040] When the rotor rotation test is required, driving wheels 411 are attached to the bottom positions of both ends of the rotor, and then the driving motor 402 is operated to rotate the rotating rod 403. The second pulley 414 is fixedly connected to the rotating rod 403, and the second pulley 414 is driven to rotate by the rotation of the transmission belt 413. The second pulley 414 is sleeved with a transmission belt 413, and the bottom end of the transmission belt 413 is sleeved on the first pulley 412. The rotation of the second pulley 414 drives the first pulley 412 to rotate through the transmission belt 413, so that the driving wheel 411 on the driven shaft 410 can rotate at high speed to drive the rotor for testing.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotor torsional vibration testing device for an automobile generator rotor, comprising a base plate (1), characterized in that: The bottom plate (1) is provided with mounting holes (101) at the four corners, a control console (102) is fixedly mounted on the top surface of the bottom plate (1), a processing table (103) is fixedly mounted at the middle of the top surface of the bottom plate (1), side seats (104) are fixedly connected to the top two sides of the processing table (103), a pair of fixing rods (105) are fixedly connected between the side seats (104), a support rod (106) is fixedly connected to the rear side of the top surface of the bottom plate (1), a sleeve seat (107) is rotatably connected to the top of the support rod (106), one end of the sleeve seat (107) is fixedly connected to a support plate (108), and a sensor (109) is fixedly mounted at the top of the support plate (108); It also comprises an adjustment component, a positioning component and a driving component, wherein the adjustment component is arranged on the processing table (103) for placing the rotor, the positioning component is arranged on the fixing rod (105) for limiting the position of the rotor, and the driving component is arranged on the bottom plate (1) for testing the rotor; The adjustment component comprises a main shaft (2) rotatably connected to the middle position of the processing table (103), a gear (201) is fixedly connected to the middle position of the main shaft (2), a toothed plate (202) is meshed on the gear (201), a pull block (203) is fixedly connected to the middle position of one side of the toothed plate (202), the pull block (203) is threadedly connected to a threaded rod (204), both ends of the threaded rod (204) are rotatably connected to a limit seat (205), and one end of the threaded rod (204) is fixedly connected to an adjustment disk (206); A fixed disk (207) is fixedly connected to the top position of the main shaft (2), a pair of arm plates (208) are symmetrically fixedly connected to the edge of the fixed disk (207), a docking shaft (209) is fixedly connected to the other end of the pair of arm plates (208), a first ring (210) is sleeved on the bottom end of the docking shaft (209), a linkage plate (211) is fixedly connected to the surface of the first ring (210), and a second ring (212) is fixedly connected to the other end of the linkage plate (211).

2. A rotor torsional vibration testing device for an automobile generator rotor according to claim 1, characterized in that: The positioning assembly comprises a pulley (3) slidably connected to the fixing rod (105), the pulley (3) being rotatably connected to the docking seat (301), the top end of the docking seat (301) being fixedly connected to a limiting plate (302), one end of the limiting plate (302) being fixedly connected to a loading plate (303), a shaft pin (304) being fixedly connected to the middle position of the bottom end of the loading plate (303), and the second ring (212) being sleeved on the shaft pin (304).

3. The rotor torsional vibration testing device for an automobile generator rotor according to claim 2, characterized in that: A support plate (305) is fixedly connected to the middle of the top surface of the carrier plate (303), and a U-shaped groove (306) opening upward is provided on the support plate (305). A pair of first shaft seats (307) are symmetrically fixedly connected to the top surface of the carrier plate (303), a sliding rod (308) is fixedly connected between the pair of first shaft seats (307), a pair of sleeve blocks (309) are slidably connected to the sliding rod (308), and a pair of pull columns (310) are fixedly connected to the outer surfaces of the sleeve blocks (309), and a first spring (311) is sleeved on the sliding rod (308), and two ends of the first spring (311) are fixedly connected to one side of the first shaft seat (307) and one side of the sleeve block (309), respectively.

4. The rotor torsional vibration testing device for an automobile generator rotor according to claim 3, characterized in that: A clamping sleeve (312) is fixedly connected to the middle position of the sliding rod (308), a positioning column (313) is fixedly connected to the surface of the clamping sleeve (312) at a lateral position, one end of the positioning column (313) is rotatably connected to a turntable (314), a pair of guide grooves (315) are symmetrically provided on the turntable (314), and one end of the pulling column (310) is slidably connected to the inside of the guide groove (315).

5. The rotor torsional vibration testing device for an automobile generator rotor according to claim 4, characterized in that: A pair of clamping plates (316) are fixedly connected to the top positions of the sleeve blocks (309), and a guide wheel (317) is rotatably connected to the top ends of the clamping plates (316).

6. The rotor torsional vibration testing device for an automobile generator rotor according to claim 5, characterized in that: The driving assembly comprises two groups of rod bodies (4) fixedly connected to the bottom plate (1); the top ends of the rod bodies (4) are fixedly connected to a bracket (401); a driving motor (402) is fixedly installed at the middle position of the bottom surface of the bracket (401); the output end of the driving motor (402) is fixedly connected to a rotating rod (403); both ends of the rotating rod (403) are rotatably connected to a fixed seat (404); the top end of the fixed seat (404) is fixedly connected to the bracket (401); and a sliding groove (405) is provided on the fixed seat (404).

7. The rotor torsional vibration testing device for an automobile generator rotor according to claim 6, characterized in that: A second shaft seat (406) is fixedly connected to the outer side of the fixed seat (404), a side rod (407) is fixedly connected to the second shaft seat (406), a sliding block (408) is slidably connected to the side rod (407), a second spring (409) is sleeved on the side rod (407), and two ends of the second spring (409) are respectively fixedly connected to the bottom surface of the second shaft seat (406) and the top surface of the sliding block (408).

8. The rotor torsional vibration testing device for an automobile generator rotor according to claim 7, characterized in that: A driven shaft (410) is rotatably connected to the inner side of the slider (408); one end of the driven shaft (410) extends to the inner side of the fixed seat (404) through a slide groove (405); one end of the driven shaft (410) is fixedly connected to a driving wheel (411); a first pulley (412) is fixedly connected to the driven shaft (410); a transmission belt (413) is sleeved on the first pulley (412); a top end of the transmission belt (413) is sleeved on a second pulley (414); and the second pulley (414) is fixedly connected to the rotating rod (403).

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