A kind of anti-fatigue detection device for automobile chassis suspension structure

Abstract

The present invention relates to the technical field of testing equipment, and in particular to an anti-fatigue detection device for a suspension structure of an automobile chassis, comprising two discs and a group of power units, wherein one disc is fixed in position, and the other disc is driven to move by the power unit, and each disc is provided with a support plate, and the two support plates are located between the two discs, and each support plate is provided with a plug post, and the two plug posts are used to pass through two round holes on a rubber ear, so as to fix the rubber ear; the device can not only simulate the torsional fatigue of the rubber ear under a dynamic load, but also perform elastic reciprocating tensile fatigue test, thereby realizing multiple test tasks on the rubber ear, thereby obtaining more accurate test results, and by causing the rubber ear to reciprocate in torsion and stretching, the device can better simulate the complex working conditions of the automobile during actual use, thereby improving the practical significance of the test.

Description

Technical Field

[0001] The invention relates to the technical field of testing equipment, in particular to an anti-fatigue detection device for a suspension structure of an automobile chassis. Background Art

[0002] With the rapid development of the automobile industry and technological progress, quality control of automobile parts has become particularly important. As an important part of the vehicle structure, the performance of the automobile chassis directly affects driving safety and comfort. Among them, the rubber lug is an important suspension component connecting the exhaust pipe, which plays the role of shock absorption and fixation of the exhaust pipe.

[0003] Rubber lugs are usually made of composite rubber. Their main function is to absorb vibrations during vehicle driving. However, during long-term use, the rubber material will suffer fatigue damage due to repeated stretching and compression, thus affecting its performance. Therefore, it is very necessary to test the anti-fatigue performance of the rubber lugs.

[0004] Traditional anti-fatigue test methods mostly use static loading, that is, the lifting lug is pulled by a structure such as a cylinder or oil cylinder to keep it in a deformed state under a specified tensile force. After the lifting lug is deformed for a specified time, the tensile force is stopped. At this time, it is observed whether the lifting lug can restore its initial shape and whether cracks and other defects are generated on the lifting lug. However, this test method is relatively one-sided. It cannot accurately test the true performance of the lifting lug under dynamic load, and it can only perform one test method, which is not comprehensive enough. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an anti-fatigue detection device for automobile chassis suspension structure, and the specific technical solution adopted is:

[0006] An anti-fatigue detection device for a suspension structure of an automobile chassis comprises two discs and a group of power units, one disc is fixed, and the other disc is driven to move by the power unit, each disc is provided with a support plate, the two support plates are located between the two discs, each support plate is provided with a plug, and the two plugs are used to pass through two round holes on a rubber ear, so as to fix the rubber ear;

[0007] The power unit comprises a support shaft coaxially mounted on the disc, a gear is arranged on the support shaft, an outer frame is arranged on the outer side of the gear, the length direction of the outer frame is horizontal and perpendicular to the axis of the support shaft, one side of the upper and lower sides of the inner wall of the outer frame is set as a smooth surface, and the other side is set with teeth, and the teeth are meshed with the gear, and a retaining edge for locking the gear is arranged on the outer frame, and a guide rail is arranged at the bottom of the outer frame, and the outer frame slides on the guide rail;

[0008] When the outer frame slides back and forth on the guide rail, the outer frame pushes the gear and the support shaft to rotate, and the rubber ear twists back and forth. When the guide rail moves back and forth along the axis of the support shaft, the disc on the support shaft pulls the rubber ear back and forth.

[0009] Furthermore, the power unit also includes a first motor, a turntable installed on the output end of the first motor, a shifting post eccentrically installed on the turntable and a vertical slot plate located outside the shifting post, and the vertical slot plate is connected to the outer frame through a lever structure.

[0010] Furthermore, the lever structure includes a supporting column, a telescopic rod and a sleeve rotatably mounted on the column, a first sliding rod is slidably inserted into one end of the sleeve, the first sliding rod is rotatably connected to the outer frame, and a second sliding rod is slidably inserted into the other end of the sleeve, the telescopic rod and the sleeve are distributed up and down, one end of the telescopic rod is rotatably mounted on the outer frame, and the other end of the telescopic rod and the second sliding rod are rotatably provided with a connecting disk, and the vertical groove plate is located between the two connecting disks and fixedly connected to each other.

[0011] Furthermore, a slider is fixed at the bottom of the column, a moving platform is provided at the bottom of the slider, the slider slides on the moving platform along the axial direction of the support shaft, the guide rail is fixed on the moving platform, a second motor and a first threaded rod for providing power for the movement of the slider are provided on the moving platform, one end of the first threaded rod is connected to the output end of the second motor, and the other end of the first threaded rod passes through the slider and is threadedly connected to each other.

[0012] Furthermore, the power unit also includes a bow plate and a rotating column. The movable platform passes through the bow plate and slides relatively. A cylinder is arranged on the rotating column, and the rotating column supports the cylinder. A bottom plate is arranged at the bottom of the first motor. A first vertical axis and a second vertical axis are eccentrically arranged at the bottom of the bottom plate. The first vertical axis is rotatably installed on the bow plate, and the second vertical axis is connected to the output end of the cylinder.

[0013] Furthermore, an arc-shaped slide rail is arranged on the arched plate, the center of the arc-shaped slide rail coincides with the axis of the first vertical axis, a slide seat is slidably arranged on the arc-shaped slide rail, and the slide seat is connected to the second vertical axis.

[0014] Furthermore, the detection device also includes a base frame, the moving platform is slidably mounted on the base frame, the arch plate is fixed on the base frame, and the rotating column is rotatably mounted on the base frame;

[0015] A right-angle frame is sleeved on the supporting shaft, and the right-angle frame is fixed to the base frame through a connecting sleeve. The moving platform and the base frame are connected by a spring sheet. A baffle for limiting the moving platform is arranged on the moving platform. A contact plate is arranged on the end surface of the moving platform away from the disc, and the contact plate is fixed on the fixed end of the cylinder.

[0016] Furthermore, a slide groove is provided on the end surface of the disc, and a support plate is slidably installed in the slide groove. A second threaded rod is rotatably provided in the slide groove. The second threaded rod passes through the support plate and is threadedly connected. The end of the second threaded rod extends out of the disc, and the second threaded rod and the disc are locked by a lock nut.

[0017] The advantages of the present invention are:

[0018] The device can not only simulate the torsional fatigue of the rubber ear under dynamic load, but also perform elastic reciprocating tensile fatigue test, realize multiple test work on the rubber ear, so as to obtain more accurate test results, and by making the rubber ear reciprocate torsion and stretch, the device can better simulate the complex working conditions of the automobile in actual use, thereby improving the practical significance of the test; the design of the device allows the user to adjust the moving range of the outer frame, so as to change the number of twisting circles of the rubber ear while ensuring the reciprocating twisting of the rubber ear, so that the test can be adjusted as needed and is suitable for different test needs; the device has a simple structure and is easy to operate, and the test can be realized by manually or automatically controlling the reciprocating movement of the outer frame on the guide rail, which reduces the difficulty of operation; in summary, this anti-fatigue detection device overcomes the limitations of traditional static loading methods, provides a testing method that is closer to actual use conditions, can effectively evaluate the anti-fatigue performance of rubber ears, and helps to improve the quality control level of automotive parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention 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 recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of the power unit;

[0022] Figure 3 yes Figure 2 Schematic diagram of explosion structure;

[0023] Figure 4 yes Figure 3 A schematic diagram of the enlarged cross-sectional structure of the middle and outer frames;

[0024] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure of the mobile station;

[0025] Figure 6 yes Figure 3 Schematic diagram of the enlarged structure of the middle arch plate;

[0026] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure of the middle arch plate;

[0027] Figure 8 yes Figure 3 A schematic diagram of the enlarged structure of the middle disk from another perspective;

[0028] Figure numerals: 1, disc; 2, support plate; 3, plug column; 4, support shaft; 5, gear; 6, outer frame; 7, retaining edge; 8, guide rail; 9, first motor; 10, turntable; 11, shift column; 12, vertical slot plate; 13, column; 14, sleeve; 15, first slide bar; 16, second slide bar; 17, telescopic rod; 18, connecting plate; 19, moving platform; 20, slider; 21, second motor; 2 2. First threaded rod; 23. Bow plate; 24. Rotating column; 25. Cylinder; 26. Bottom plate; 27. First vertical axis; 28. Second vertical axis; 29. ​​Arc slide rail; 30. Slide seat; 31. Base frame; 32. Connecting sleeve; 33. Right angle frame; 34. Shrapnel; 35. Baffle; 36. Sticking plate; 37. Second threaded rod; 38. Lock nut; 39. Long mouth; 40. Limit plate; 41. Power unit. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0032] like Figures 1 to 8 As shown, an anti-fatigue detection device for a suspension structure of an automobile chassis of the present invention comprises two discs 1 and a group of power units 41, one disc 1 is fixed in position, and the other disc 1 is driven to move by the power unit 41, each disc 1 is provided with a support plate 2, the two support plates 2 are located between the two discs 1, each support plate 2 is provided with a plug 3, and the two plugs 3 are used to pass through two round holes on the rubber ear, so as to fix the rubber ear;

[0033] The power unit 41 includes a support shaft 4 coaxially mounted on the disc 1, a gear 5 is provided on the support shaft 4, an outer frame 6 is provided on the outer side of the gear 5, the length direction of the outer frame 6 is horizontal and perpendicular to the axis of the support shaft 4, one side of the upper and lower sides of the inner wall of the outer frame 6 is set as a smooth surface, and the other side is set with teeth, and the teeth are meshed with the gear 5, and a retaining edge 7 for locking the gear 5 is provided on the outer frame 6, and a guide rail 8 is provided at the bottom of the outer frame 6, and the outer frame 6 slides on the guide rail 8;

[0034] When the outer frame 6 slides back and forth on the guide rail 8, the outer frame 6 pushes the gear 5 and the support shaft 4 to rotate, and the rubber ear twists back and forth. When the guide rail 8 moves back and forth along the axial direction of the support shaft 4, the disc 1 on the support shaft 4 pulls the rubber ear back and forth.

[0035] In detail, two discs 1 are relatively distributed in the horizontal direction, one disc 1 is fixed, and the other disc 1 can be driven to move by a power unit 41. Two plugs 3 between the two discs 1 are used to insert into two round holes on the rubber ear, and two support plates 2 are used to support the two plugs 3, and the support plates 2 lift the rubber ear, thereby Figure 1 It can be seen from the structure that the two support plates 2 and the two plug posts 3 on the two discs 1 can fix the rubber ears, the support shaft 4 is used to support the gear 5 and the disc 1, the outer frame 6 is in the shape of a square, and its length direction is horizontal, and two ribs 7 are arranged on the upper wall and the lower wall on the inner side of the outer frame 6, and the two ribs 7 are located on the two end surfaces of the gear 5, so that the gear 5 and the outer frame 6 can be locked by the ribs 7, and the guide rail 8 can guide the outer frame 6.

[0036] When testing the rubber ear, the rubber ear is inserted into the two plugs 3, and the center point of the rubber ear coincides with the axis of the disk 1. The reciprocating motion of the outer frame 6 on the guide rail 8 can make the gear 5 and the support shaft 4 reciprocate. The disk 1 on one side of the rubber ear is fixed, and the disk 1 on the other side reciprocates, thereby driving the rubber ear to perform reciprocating torsional motion, thereby realizing the torsional fatigue test, and the number of torsional circles can be determined by the moving range of the outer frame 6. When the rubber ear is twisted for a specified time or a specified number of times, the outer frame 6 stops moving on the guide rail 8. At this time, the guide rail 8 is reciprocated along the axial direction of the support shaft 4. The guide rail 8 will drive the gear 5 to move synchronously through the outer frame 6 and the retaining edge 7. The gear 5 will pull the rubber ear through the support shaft 4 and the disk 1 to perform elastic reciprocating tensile motion, thereby performing a tensile fatigue test on it, thereby realizing multiple tests on the rubber ear.

[0037] The device can not only simulate the torsional fatigue of the rubber ear under dynamic load, but also perform elastic reciprocating tensile fatigue test, realize multiple test work on the rubber ear, so as to obtain more accurate test results, and by making the rubber ear reciprocate torsion and stretch, the device can better simulate the complex working conditions of the automobile in actual use, thereby improving the practical significance of the test; the design of the device allows the user to adjust the moving range of the outer frame 6, so as to change the number of twisting circles of the rubber ear while ensuring the reciprocating twisting of the rubber ear, so that the test can be adjusted as needed and is suitable for different test needs; the device has a simple structure and is easy to operate, and the test can be realized by manually or automatically controlling the reciprocating motion of the outer frame 6 on the guide rail 8, which reduces the difficulty of operation; in summary, this anti-fatigue detection device overcomes the limitations of traditional static loading methods, provides a testing method that is closer to actual use conditions, can effectively evaluate the anti-fatigue performance of the rubber ear, and helps to improve the quality control level of automotive parts.

[0038] Furthermore, the power unit 41 also includes a first motor 9, a turntable 10 installed on the output end of the first motor 9, a lever 11 eccentrically installed on the turntable 10, and a vertical slot plate 12 located outside the lever 11, and the vertical slot plate 12 is connected to the outer frame 6 through a lever structure.

[0039] In detail, a baffle plate can be provided at the end of the lever post 11 to limit the lever post 11 and the vertical slot plate 12. The vertical slot plate 12 is vertical. The first motor 9 can drive the lever post 11 to rotate through the turntable 10. Since the vertical slot plate 12 is vertical, the lever post 11 can drive the vertical slot plate 12 to reciprocate along the length direction of the outer frame 6. The lever post 11 simultaneously slides vertically in the vertical slot plate 12. The vertical slot plate 12 pushes the outer frame 6 to reciprocate on the guide rail 8 through the lever structure, thereby providing power for the torsional fatigue test of the rubber lifting ear.

[0040] Furthermore, the lever structure includes a supporting column 13, a telescopic rod 17 and a sleeve 14 rotatably mounted on the column 13, a first slide bar 15 is slidably inserted into one end of the sleeve 14, the first slide bar 15 is rotatably connected to the outer frame 6, a second slide bar 16 is slidably inserted into the other end of the sleeve 14, the telescopic rod 17 and the sleeve 14 are distributed up and down, one end of the telescopic rod 17 is rotatably mounted on the outer frame 6, the other end of the telescopic rod 17 and the second slide bar 16 are rotatably provided with a connecting plate 18, and the vertical slot plate 12 is located between the two connecting plates 18 and are fixedly connected to each other.

[0041] In detail, the column 13 supports the sleeve 14, and the arrangement of the telescopic rod 17 can make the connection between the vertical slot plate 12 and the outer frame 6 more stable. When the turntable 10 drives the shifting column 11 to move, the axial direction of the shifting column 11 remains unchanged, so the direction of the vertical slot plate 12 remains unchanged. At this time, since the lever structure needs to swing, the connecting plate 18 is required to realize the connection between the vertical slot plate 12 and the lever structure.

[0042] When the vertical slot plate 12 moves along the length direction of the outer frame 6, the vertical slot plate 12 will push the sleeve 14 to rotate on the column 13 through the second slide bar 16, and the sleeve 14 will move the outer frame 6 in the opposite direction through the first slide bar 15, thereby providing reciprocating power for the outer frame 6, and when the sleeve 14 rotates on the column 13, the first slide bar 15 and the second slide bar 16 both slide relative to the sleeve 14, and at the same time, the movement of the vertical slot plate 12 and the outer frame 6 will drive the telescopic rod 17 to perform telescopic movement.

[0043] Furthermore, a slider 20 is fixed at the bottom of the column 13, a moving platform 19 is provided at the bottom of the slider 20, the slider 20 slides on the moving platform 19 along the axial direction of the support shaft 4, the guide rail 8 is fixed on the moving platform 19, and a second motor 21 and a first threaded rod 22 for providing power for the movement of the slider 20 are provided on the moving platform 19, one end of the first threaded rod 22 is connected to the output end of the second motor 21, and the other end of the first threaded rod 22 passes through the slider 20 and is threadedly connected to each other.

[0044] In detail, the movable platform 19 can provide support for the column 13 and the guide rail 8. Since the position of the column 13 is adjustable, the rotation reference point of the sleeve 14 is adjustable. In this way, when the turntable 10 rotates, the amplitude of the reciprocating motion of the outer frame 6 driven by the lever 11 changes, thereby adjusting the number of turns of the reciprocating twisting of the rubber ear.

[0045] The second motor 21 can push the slider 20 to move through the first threaded rod 22 , so that the slider 20 drives the column 13 to move along the axis direction of the support shaft 4 . At this time, the first slide bar 15 and the second slide bar 16 both slide relative to the sleeve 14 .

[0046] Furthermore, the power unit 41 also includes a bow plate 23 and a rotating column 24. The moving platform 19 passes through the bow plate 23 and slides relatively. A cylinder 25 is arranged on the rotating column 24, and the rotating column 24 supports the cylinder 25. A bottom plate 26 is arranged at the bottom of the first motor 9, and a first vertical axis 27 and a second vertical axis 28 are eccentrically arranged at the bottom of the bottom plate 26. The first vertical axis 27 is rotatably installed on the bow plate 23, and the second vertical axis 28 is connected to the output end of the cylinder 25.

[0047] In detail, the arch plate 23 guides and supports the moving platform 19, the rotating column 24 guides and supports the cylinder 25, and the bottom plate 26 and the first motor 9 thereon can rotate with the axis of the first vertical axis 27 as the rotating axis, thereby adjusting the direction of the turntable 10 and the lever 11.

[0048] When the torsion test of the rubber lifting lug is performed, the axis of the turntable 10 coincides with the axis of the support shaft 4 , at which time the cylinder 25 is in an extended state, and the first motor 9 runs and normally drives the outer frame 6 to reciprocate on the guide rail 8 .

[0049] When conducting a pulling test on the rubber ear, the cylinder 25 contracts, and the cylinder 25 drives the bottom plate 26 to rotate with the axis of the first vertical axis 27 as the axis through the second vertical axis 28, and the bottom plate 26 drives the first motor 9 and the turntable 10 to move synchronously, thereby adjusting the direction of the first motor 9 and the turntable 10, the axis of the turntable 10 is perpendicular to the axis of the support shaft 4, and the vertical plane where the movement trajectory of the lever 11 is located coincides with the axis of the support shaft 4, the first slide bar 15 and the second slide bar 16 are both in a state of maximum extension on the sleeve 14, at this time, when the first motor 9 is running, it can drive the vertical slot plate 12 to reciprocate along the axis of the support shaft 4 through the lever 11, and the vertical slot plate 12 pulls the outer frame 6 to reciprocate along the axis of the support shaft 4 through the lever structure, thereby driving the rubber ear to perform a pulling test, and the outer frame 6 drives the moving platform 19 to move synchronously through the guide rail 8, and the lever structure is in a stationary state on the moving platform 19.

[0050] In actual use, a long opening 39 connected to the inside of the sleeve 14 can be opened on the sleeve 14, and two limit plates 40 are arranged in the long opening 39. The two limit plates 40 are respectively connected to the first slide bar 15 and the second slide bar 16. The long opening 39 and the limit plates 40 are used to limit the moving position of the first slide bar 15 and the second slide bar 16 on the sleeve 14, thereby limiting the total length of the sleeve 14, the first slide bar 15 and the second slide bar 16.

[0051] Furthermore, an arc-shaped slide rail 29 is provided on the arch plate 23 , the center of the arc-shaped slide rail 29 coincides with the axis of the first vertical shaft 27 , a slide seat 30 is slidably provided on the arc-shaped slide rail 29 , and the slide seat 30 is connected to the second vertical shaft 28 .

[0052] In detail, when the bottom plate 26 rotates on the first vertical axis 27 , the slide seat 30 slides on the arc-shaped slide rail 29 , thereby utilizing the arc-shaped slide rail 29 and the slide seat 30 to provide auxiliary support to the bottom plate 26 and the first motor 9 .

[0053] Furthermore, the detection device further comprises a base frame 31, the moving platform 19 is slidably mounted on the base frame 31, the arch plate 23 is fixed on the base frame 31, and the rotating column 24 is rotatably mounted on the base frame 31;

[0054] A right-angle frame 33 is sleeved on the support shaft 4, and the right-angle frame 33 is fixed to the base frame 31 through a connecting sleeve 32. The movable platform 19 is connected to the base frame 31 through a spring piece 34. A baffle 35 for limiting the movable platform 19 is arranged on the movable platform 19. A contact plate 36 is arranged on the end surface of the movable platform 19 away from the disc 1, and the contact plate 36 is fixed to the fixed end of the cylinder 25.

[0055] In detail, the fixed disc 1 is installed on the base frame 31, and the connecting sleeve 32 and the right-angle frame 33 can support the support shaft 4 and the disc 1 thereon. When the rubber lifting ear is subjected to a torsion test, the spring piece 34 pushes the baffle 35 on the movable platform 19 to abut against the bow plate 23. At this time, the position of the movable platform 19 is fixed, and the sticking plate 36 on the cylinder 25 contacts the end face of the movable platform 19, thereby further limiting the position of the movable platform 19. When the test mode is changed, the cylinder 25 contracts, and the cylinder 25 drives the sticking plate 36 thereon to deviate from the movable platform 19. When the first motor 9 is running, it overcomes the elastic force of the spring piece 34 and pushes the movable platform 19 to pass through the bow plate 23 for reciprocating motion.

[0056] By providing the baffle plate 35 and the contact plate 36, the position of the movable platform 19 can be locked when the cylinder 25 is in the extended state.

[0057] Furthermore, a slide groove is opened on the end surface of the disc 1, and the support plate 2 is slidably installed in the slide groove. A second threaded rod 37 is rotatably arranged in the slide groove. The second threaded rod 37 passes through the support plate 2 and is threadedly connected. The end of the second threaded rod 37 extends out of the disc 1, and the second threaded rod 37 and the disc 1 are locked by a lock nut 38.

[0058] In detail, when testing rubber ears of different thicknesses, in order to make the center point of the rubber ear coincide with the axis of the disc 1, it is necessary to adjust the position of the support plate 2 on the disc 1. At this time, loosen the lock nut 38 and rotate the second threaded rod 37 to push the support plate 2 to slide in the slide groove. When the position adjustment of the support plate 2 is completed, the second threaded rod 37 can be locked by the lock nut 38.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An anti-fatigue detection device for automobile chassis suspension structure, characterized in that: It includes two discs and a group of power units. One disc is fixed in position, and the other disc is moved by the power unit. Each disc is provided with a support plate. The two support plates are located between the two discs. Each support plate is provided with a plug. The two plugs are used to pass through the two round holes on the rubber ear, so as to fix the rubber ear. The power unit comprises a support shaft coaxially mounted on the disc, a gear is arranged on the support shaft, an outer frame is arranged on the outer side of the gear, the length direction of the outer frame is horizontal and perpendicular to the axis of the support shaft, one side of the upper and lower sides of the inner wall of the outer frame is set as a smooth surface, and the other side is set with teeth, and the teeth are meshed with the gear, and a retaining edge for locking the gear is arranged on the outer frame, and a guide rail is arranged at the bottom of the outer frame, and the outer frame slides on the guide rail; When the outer frame slides back and forth on the guide rail, the outer frame pushes the gear and the support shaft to rotate, and the rubber ear twists back and forth. When the guide rail moves back and forth along the axis of the support shaft, the disc on the support shaft pulls the rubber ear back and forth. The power unit also includes a first motor, a turntable mounted on the output end of the first motor, a shifting post eccentrically mounted on the turntable, and a vertical slot plate located outside the shifting post, wherein the vertical slot plate is connected to the outer frame via a lever structure; The lever structure includes a supporting column, a telescopic rod, and a sleeve rotatably mounted on the column, a first sliding rod is slidably inserted into one end of the sleeve, the first sliding rod is rotatably connected to the outer frame, a second sliding rod is slidably inserted into the other end of the sleeve, the telescopic rod and the sleeve are distributed up and down, one end of the telescopic rod is rotatably mounted on the outer frame, the other end of the telescopic rod and the second sliding rod are both rotatably provided with a connecting plate, and the vertical slot plate is located between the two connecting plates and fixedly connected to each other; A slider is fixed at the bottom of the column, a moving platform is provided at the bottom of the slider, the slider slides on the moving platform along the axis direction of the support shaft, the guide rail is fixed on the moving platform, a second motor and a first threaded rod for providing power for the movement of the slider are provided on the moving platform, one end of the first threaded rod is connected to the output end of the second motor, and the other end of the first threaded rod passes through the slider and is threadedly connected to each other; The power unit also includes a bow plate and a rotating column. The moving platform passes through the bow plate and slides relatively. A cylinder is arranged on the rotating column, and the rotating column supports the cylinder. A bottom plate is arranged at the bottom of the first motor. A first vertical axis and a second vertical axis are eccentrically arranged at the bottom of the bottom plate. The first vertical axis is rotatably mounted on the bow plate, and the second vertical axis is connected to the output end of the cylinder.

2. The anti-fatigue detection device for automobile chassis suspension structure according to claim 1 is characterized in that: The arched plate is provided with an arc-shaped slide rail, the center of which coincides with the axis of the first vertical axis, and a slide seat is slidably provided on the arc-shaped slide rail, which is connected to the second vertical axis.

3. The anti-fatigue detection device for automobile chassis suspension structure according to claim 2 is characterized in that: The detection device also includes a base frame, the moving platform is slidably mounted on the base frame, the arch plate is fixed on the base frame, and the rotating column is rotatably mounted on the base frame; A right-angle frame is sleeved on the supporting shaft, and the right-angle frame is fixed to the base frame through a connecting sleeve. The moving platform and the base frame are connected by a spring sheet. A baffle for limiting the moving platform is arranged on the moving platform. A contact plate is arranged on the end surface of the moving platform away from the disc, and the contact plate is fixed on the fixed end of the cylinder.

4. The anti-fatigue detection device for automobile chassis suspension structure according to claim 3 is characterized in that: A slide groove is provided on the end surface of the disc, and a support plate is slidably installed in the slide groove. A second threaded rod is rotatably arranged in the slide groove. The second threaded rod passes through the support plate and is threadedly connected. The end of the second threaded rod extends out of the disc, and the second threaded rod and the disc are locked by a lock nut.

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