Automobile lining service life test device and test method

Abstract

The invention discloses a device and a method for testing the service life of an automobile bushing, relates to the technical field of automobile bushing testing, and aims to solve the technical problem that an existing pressure-torsion testing machine is difficult to test the influence of instantaneous impact borne by the bushing in the actual working condition on service life attenuation, and the device comprises a base, and a plurality of pressure-torsion testing assemblies are arranged at the top of the base. The top of the base is connected with a supporting frame, the supporting frame is provided with a plurality of impact test assemblies, each impact test assembly comprises an impact column, the top of the supporting frame is provided with a successive driving assembly, a plurality of transmission assemblies are arranged below the successive driving assembly, each transmission assembly comprises a transmission rod, and the circumferential outer wall of each transmission rod is connected with a plurality of driving columns. The successive driving assembly can drive the transmission rods to go up and down successively, a stroke adjusting mechanism is arranged on the side of the impact test assembly, and the stroke adjusting mechanism comprises an adjusting block. The device has the advantage of being capable of simulating the instantaneous impact on the lining in the actual working condition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile bushing test, in particular to an automobile bushing life test device and test method. BACKGROUND

[0002] The suspension system of the automobile is the part with the most bushings and the most complex working conditions. In the suspension system, the bushing is an elastic buffer element connecting the key components such as the suspension control arm, the frame and the steering knuckle, which is usually made of rubber, polyurethane or composite elastic material. The function of the bushing is to ensure the stable connection of the suspension components, absorb the impact of road bumps, suppress metal impact noise, filter vibration transmission to the vehicle body to improve the riding comfort.

[0003] In the prior art, the bushing is usually tested by a compression-torsion testing machine. The compression-torsion testing machine is a special testing equipment for simulating the state of the bushing simultaneously bearing axial compression and radial torque in the actual working condition, and then detecting the mechanical properties, structural strength and durability reliability of the bushing. However, in practice, when the vehicle passes through the pits, crushed stones or speed bumps, the impact load borne by the bushing is instantaneous burst. The existing compression-torsion testing machine is difficult to reproduce such pulse impact, resulting in significant deviation between the test working condition and the actual service environment, and unable to effectively capture the real failure mechanism and life attenuation law of the bushing under the impact load. In view of this, the present application provides an automobile bushing life test device and test method. SUMMARY

[0004] The present application aims to provide an automobile bushing life test device and test method to solve the technical problem that the existing compression-torsion testing machine is difficult to test the influence of the instantaneous impact borne by the bushing in the actual working condition on the life attenuation.

[0005] To solve the above technical problems, the present application provides the following technical solutions: a kind of automobile bushing life test device, including base, the top of the base is arranged with multiple compression-torsion test components, the top of the base is connected with support frame, and multiple impact test components are arranged on the support frame, and the impact test component includes impact column;The top of the support frame is arranged with progressive drive assembly, and multiple transmission components are arranged below the progressive drive assembly, the transmission component includes transmission rod, and the circumferential outer wall of the transmission rod is connected with multiple drive columns, the transmission rod is used to drive the impact column to rise, and the impact column is released to impact downward;The progressive drive assembly can drive multiple transmission rods to be lifted progressively, so that multiple impact columns form progressive instantaneous impact state;Stroke adjusting mechanism is arranged on the side of the impact test component, the adjusting block is opened with guide hole from top to bottom, multiple guide grooves are opened in the inner side wall of the guide hole, the guide groove is composed of lower vertical slot, turning groove and upper vertical slot, the transmission rod is slidably arranged in the guide hole, the drive column is movably arranged in the guide groove, when the drive column is slid from the lower vertical slot to the turning groove, the drive column can drive the transmission rod to rotate, so that the transmission rod releases the impact column to impact downward.

[0006] Preferably, multiple compression-torsion test components are arranged in a ring array, and the compression-torsion test component includes a horizontal clamping piece and a vertical clamping piece;The vertical clamping piece includes a lower clamping block and an upper clamping block, and a pressure receiving block is integrally formed on the top of the upper clamping block, the pressure receiving block is arranged below the impact column, and the pressure receiving block is used to accept the instantaneous impact pressure of the impact column and transmit the pressure to the automobile suspension bushing.

[0007] Preferably, multiple impact test components are arranged in a ring array, and the impact test component includes a fixed plate arranged on the side wall of the support frame, the side wall of the fixed plate is connected with a guide frame, multiple guide sliding grooves are opened in the side wall of the guide frame, the impact column is slidably arranged in the inner cavity of the guide frame, a spring one is sleeved on the circumferential outer wall of the impact column, the circumferential outer wall of the impact column is also connected with a fixed circular plate, the spring one is arranged between the fixed circular plate and the inner top of the guide frame, multiple guide blocks are integrally formed on the side wall of the fixed circular plate, sliding blocks are integrally formed on the side wall of the guide block, the sliding blocks are slidably arranged in the guide sliding grooves, and the guide blocks and the inner side wall of the guide frame form contact sliding, to ensure the verticality of the vertical movement of the impact column;A rotating drum is rotatably connected to the upper side wall of the impact column, multiple tooth plates are arranged on the outer side wall of the guide frame, and a sliding rail is arranged on the other outer side wall of the guide frame.

[0008] Preferably, the plurality of transmission assemblies are arranged in an annular array, the transmission assembly further comprises a plurality of lifting rods, the top of the lifting rod is rotationally arranged with an adaptive plate, the side wall of the adaptive plate is arranged with a plurality of guide wheels; the side wall of the support frame is connected with a plurality of fixed cylinders, the lifting rod is slidingly arranged in the inner cavity of the fixed cylinder, and the bottom of the lifting rod is rotationally connected with the top of the transmission rod.

[0009] Preferably, the side wall of the transmission rod is connected with a support plate, the side wall of the support plate is integrally formed with a release plate, the side wall of the release plate is provided with a groove, the top of the release plate is provided with a plurality of extrusion sliding grooves, the extrusion sliding grooves are slidingly arranged with an extrusion plate, the bottom of the extrusion plate is provided as an inclined surface structure, the extrusion plate is connected with a spring two through a connecting block, and the other end of the spring two is connected with the side wall of the release plate; the groove is used to provide a movable channel for the rotating drum, when the release plate moves downward from the upward direction of the rotating drum, the rotating drum can pass through the groove and extrude the inclined surface structure at the bottom of the extrusion plate to enter the top of the extrusion plate, at this time, the extrusion plate forms a supporting effect on the rotating drum.

[0010] Preferably, the step-by-step driving assembly comprises a rotating column rotationally arranged on the top of the support frame and a rotating motor mounted on the side wall of the support frame, the output end of the rotating motor is connected with a gear one, the circumferential outer wall of the rotating column is arranged with a toothed portion, and the gear one is meshingly connected with the toothed portion; the circumferential outer wall of the rotating column is connected with an inclined inner circular frame through a plurality of connecting rods, the inclined inner circular frame is connected with an inclined outer circular frame through a connecting ring plate, a circular guide groove, an upper circular sliding groove and a lower circular sliding groove are formed between the inclined inner circular frame and the inclined outer circular frame, and the upper circular sliding groove and the lower circular sliding groove are communicated through the circular guide groove; the adaptive plate is movably arranged in the circular guide groove, a plurality of the guide wheels are rolling arranged in the upper circular sliding groove, and another plurality of the guide wheels are rolling arranged in the lower circular sliding groove.

[0011] Preferably, the rotating axis direction of the rotating column is a vertical direction, the inclined inner circular frame and the inclined outer circular frame are inclined at an angle in a horizontal direction, and when the rotating column drives the inclined inner circular frame and the inclined outer circular frame to rotate, the inclined inner circular frame and the inclined outer circular frame form a periodic inclined swing rotation state.

[0012] Preferably, the side wall of the adjusting block is connected with a support plate, the side wall of the support plate is arranged with a sliding plate, and the sliding plate is slidingly matched with the sliding rail of the outer side wall of the guide frame; the side wall of the adjusting block is rotationally arranged with a worm gear, the worm gear is coaxially connected with a plurality of gear twos, the other side wall of the adjusting block is rotationally arranged with a worm, the worm is coaxially connected with a hand wheel, the worm is meshingly connected with the worm gear, and the gear twos are meshingly connected with the toothed plate of the outer side wall of the guide frame.

[0013] A test method of a car bushing life test device, comprising the following steps: S1, clamping and fixing operation, the inner cavity of the automobile suspension bushing is connected with the test shaft by interference, then the test shaft is clamped and fixed by the horizontal clamping piece, and then the outer side wall of the automobile suspension bushing is clamped by the lower clamping block and the upper clamping block of the vertical clamping piece, and the automobile suspension bushing is clamped and fixed by the automobile suspension bushing. S2, compression and torsion test operation, the test shaft is driven to rotate reciprocally by the reciprocating rotation of the horizontal clamping piece, so as to form a state of applying reciprocating torque to the automobile suspension bushing, and at the same time, the lower moving part of the vertical clamping part forms a state of applying continuous pressure to the automobile suspension bushing. S3, instantaneous impact test operation under compression and torsion condition, keep the state of compression and torsion test, drive multiple transmission rods to move up and down by driving assembly; At this time, the driving column on the circumferential outer wall of the transmission rod moves upward along the lower vertical groove; At the same time, the transmission rod drives the release plate to rise synchronously, the release plate supports the rotating drum on the top of the impact column through the extrusion plate, and pulls the impact column upward together with the transmission rod; During the upward movement of the impact column, spring one is in a compressed and stored state; When the driving column slides to the turning groove along the lower vertical groove, the driving column drives the transmission rod to rotate around its axis under the action of the trajectory guidance of the turning groove, and the transmission rod drives the release plate to rotate synchronously; After the release plate rotates, the support relationship between the extrusion plate and the rotating drum is released, and the impact column slides downward in the inner cavity of the guide frame under the elastic restoring force of spring one, and the bottom of the impact column directly impacts the pressure block, and the pressure block transmits the instantaneous impact force to the clamped automobile suspension bushing, and the instantaneous impact action is completed; Multiple transmission assemblies realize alternate action under the action of the driving assembly, so that multiple impact columns form continuous and sequential instantaneous impact on the corresponding automobile suspension bushing. S4, impact test operation of different instantaneous impact forces under the same compression and torsion condition, keep the state of compression and torsion test for multiple automobile suspension bushings, change the impact stroke of the impact column through the stroke adjusting mechanism, and then realize the loading test of different instantaneous impact forces; The adjustment of impact stroke and the loading of different impact forces are realized by the following steps: S4.1, impact stroke adjustment operation, the operator rotates the hand wheel, the hand wheel drives the worm to rotate, the worm rotates and drives the gear two to roll on the tooth plate, and then drives the adjusting block to move in the vertical direction, so as to change the height position of the turning groove in the adjusting block guide groove. S4.2, different impact force loading test, when the height of the turning groove is adjusted upwards, the stroke of the driving column sliding along the lower vertical groove to the turning groove increases, the height of the impact column rising driven by the transmission rod increases, so that the instantaneous impact force of the impact column downward increases; when the height of the turning groove is adjusted downwards, the height of the impact column rising driven by the driving column decreases, the instantaneous impact force of the impact column downward decreases; by adjusting the height of the turning groove of the plurality of stroke adjusting mechanisms to be a plurality of different heights, impact test operations of different instantaneous impact forces on a plurality of automobile suspension bushings under the same compression and torsion conditions are realized.

[0014] Compared with the prior art, the beneficial effects of the present application are: 1、The present application realizes the composite loading test by designing a plurality of impact test assemblies, a sequential driving assembly and a plurality of transmission assemblies, first applying pressure and torsion to the automobile suspension bushing through the compression and torsion test assembly, then starting the sequential driving assembly to drive the transmission rods of the plurality of transmission assemblies to rise and fall along the guide holes of the adjusting blocks in sequence, the impact column of the impact test assembly can be driven to rise during the rising process of the transmission rod, and the impact column is released at a certain height, so that the impact column applies instantaneous impact to the automobile suspension bushing downward, the plurality of impact columns form a sequential instantaneous impact state through the sequential rising and falling of the plurality of transmission rods, and the automobile suspension bushing can be subjected to instantaneous impact test under the condition of continuous compression and torsion composite test, the instantaneous impact that the bushing receives in actual scenarios such as passing through pits, crushing stones or quickly passing through deceleration strips can be simulated, the mechanical property change, structural damage accumulation and service life attenuation law of the bushing under composite dynamic load are tested, and more actual test data support is provided for the durability design and quality evaluation of the bushing.

[0015] 2、The present application designs the inclined inner and outer circular frames with an inclined state in the sequential driving assembly, the periodic inclined swing rotation state can be formed during the rotation of the inclined inner and outer circular frames, the track formed thereby produces periodic lifting guiding action on the guide wheels, thereby driving the adaptive plate and the transmission rods of the plurality of transmission assemblies associated therewith to realize sequential rising and falling action, the plurality of impact columns are driven to rise and fall in sequence by the plurality of transmission rods, without the need to separately configure a driving mechanism for each impact column, the plurality of impact columns can form continuous and sequential instantaneous impact on the plurality of automobile suspension bushings, energy waste caused by separately configuring a driving mechanism for each impact column is avoided, at the same time, the sequential impact of the plurality of impact columns disperses the impact load, and avoids that simultaneous impact easily causes large impact force to the entire equipment.

[0016] 3、The present application is characterized in that a plurality of guide grooves are formed in the inner side wall of the guide hole of the adjusting block, and the guide grooves are designed as a structural path composed of a lower vertical groove, a turning groove and an upper vertical groove; when the driving assembly drives the transmission rod to ascend along the guide hole, the driving column first slides vertically upward along the lower vertical groove; the vertical structure of the lower vertical groove ensures that the transmission rod does not deviate during the ascending process, so that the transmission rod can stably drive the release plate to ascend synchronously, and then the release plate can reliably support the rotating drum at the top of the impact column, so that the impact column ascends stably; when the driving column slides to the top of the lower vertical groove and enters the turning groove, the arc turning path of the turning groove generates a lateral guide force on the driving column, forcing the driving column to rotate around its axis with the transmission rod; the rotating action is directly transmitted to the release plate on the transmission rod, so that the release plate rotates synchronously, thereby releasing the support relationship between the extrusion plate and the rotating drum, so that the impact column rapidly impacts downward, completing the instantaneous impact action; the guide grooves are used to realize the ascending and downward impact actions of the impact column, and the whole process does not require manual intervention or additional program control, greatly improving the continuity of the test.

[0017] 4、The present application is characterized in that the operator rotates the hand wheel of the stroke adjusting mechanism, the hand wheel drives the coaxially connected worm to rotate, the worm is engaged with the worm gear on the side wall of the adjusting block, the worm gear rotates with the worm and drives the coaxially connected gear two to rotate synchronously; because the gear two is engaged with the toothed plate on the outer side wall of the guide frame, and the adjusting block is in sliding fit with the guide frame through the support plate and the sliding plate and the sliding rail, the rotation of the gear two will be converted into the vertical movement of the adjusting block along the sliding rail, thereby changing the height position of the turning groove in the guide groove in the adjusting block, and the height of the turning groove determines the stroke node when the driving column drives the transmission rod to release the impact column, so that the impact stroke of the impact column is finally adjusted, providing conditions for tests of different instantaneous impact forces, and the operation is simple and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of the compression-torsion test assembly of the present application.

[0020] Figure 3 It is a schematic diagram of the top structure of the compression-torsion test assembly of the present application.

[0021] Figure 4 It is a schematic diagram of the disassembled structure of the compression-torsion test assembly of the present application.

[0022] Figure 5 It is a schematic diagram of the support frame structure of the present application.

[0023] Figure 6 It is a schematic diagram of the disassembled structure of the present application from perspective one.

[0024] Figure 7The figure is a schematic view of the disassembled structure of the step-by-step driving assembly of the application.

[0025] Figure 8 The figure is a schematic view of the overall structure of the impact test assembly, transmission assembly and stroke adjusting mechanism of the application.

[0026] Figure 9 The figure is a schematic view of the disassembled structure of the impact test assembly, transmission assembly and stroke adjusting mechanism of the application.

[0027] Figure 10 The figure is a schematic view of the stroke adjusting mechanism of the application.

[0028] Figure 11 The figure is a schematic view of the transmission assembly of the application.

[0029] Figure 12 The figure is a schematic view of the impact column of the application.

[0030] Figure 13 The figure is a schematic view of the release plate of the application.

[0031] Figure 14 The figure is a schematic view of the disassembled structure of the release plate and extrusion plate of the application.

[0032] Figure 15 The figure is a schematic view of the disassembled structure of the release plate and extrusion plate of the application.

[0033] Figure 16 The figure is a schematic view of the disassembled structure of the release plate and extrusion plate of the application.

[0034] Explanation of the figure: 1, base; 2, compression-torsion test assembly; 3, support frame; 4, impact test assembly; 5, step-by-step driving assembly; 6, transmission assembly; 7, stroke adjusting mechanism; 8, automobile suspension bushing; 21, horizontal clamping piece; 22, vertical clamping piece; 23, test shaft; 2101, first clamping piece; 2102, second clamping piece; 2103, bevel gear one; 2104, bevel gear two; 2105, reciprocating motor; 2201, lower clamping block; 2202, upper clamping block; 2203, pressure receiving block; 2204, air cylinder; 301, fixed cylinder; 401, impact column; 402, fixed plate; 403, guide frame; 404, guide sliding slot; 405, spring one; 406, fixed circular plate; 407, guide block; 408, sliding block; 409, rotating cylinder; 410, toothed plate; 411, sliding rail; 501, rotating column; 502, rotating motor; 503, gear 1; 504, tooth opening; 505, connecting rod; 506, inclined inner circular frame; 507, connecting ring plate; 508, inclined outer circular frame; 509, circular guide groove; 510, upper circular guide groove; 511, lower circular guide groove; 601, transmission rod; 602, driving column; 603, lifting rod; 604, adapting plate; 605, guide wheel; 606, supporting plate; 607, release plate; 608, groove; 609, extrusion chute; 610, extrusion plate; 611, connecting block; 612, spring 2; 701, adjusting block; 702, guide hole; 703, guide groove; 7031, lower vertical groove; 7032, turning groove; 7033, upper vertical groove; 704, support plate; 705, slide plate; 706, worm gear; 707, gear 2; 708, worm; 709, handwheel. DETAILED DESCRIPTION

[0035] Example 1, as Figures 1 to 16 As shown, this embodiment provides an automobile bushing life test device, including a base 1, with multiple compression-torsion test assemblies 2 arranged on the top of the base 1, and the compression-torsion test assemblies 2 are used to perform a composite loading test of pressure and torsion on the automobile suspension bushing 8; the top of the base 1 is connected to a support frame 3, and multiple impact test assemblies 4 are arranged on the support frame 3, and the impact test assembly 4 is arranged above the compression-torsion test assembly 2. The impact test assembly 4 includes an impact column 401, and the impact column 401 is used to apply an instantaneous impact to the automobile suspension bushing 8.

[0036] Specifically, a sequential driving assembly 5 is arranged on the top of the support frame 3, and multiple transmission assemblies 6 are arranged below the sequential driving assembly 5. The transmission assembly 6 is arranged on the side of the impact test assembly 4. The transmission assembly 6 includes a transmission rod 601. The outer wall of the transmission rod 601 is connected to multiple driving columns 602. The transmission rod 601 is used to drive the impact column 401 to rise and release the impact column 401 to impact downward; the sequential driving assembly 5 can drive the multiple transmission rods 601 to rise and fall successively, so that the multiple impact columns 401 form a sequential instantaneous impact state; a stroke adjustment mechanism 7 is arranged on the side of the impact test assembly 4, and the stroke adjustment mechanism 7 includes an adjustment block 701. The adjustment block 701 is provided with a guide hole 702 from top to bottom, and the transmission rod 601 is slidably arranged in the guide hole 702.

[0037] The application realizes the composite loading test by applying pressure and torsion to the automobile suspension bushing 8 through the compression-torsion test assembly 2, and then starts the sequential driving assembly 5 to drive the transmission rods 601 of the plurality of transmission assemblies 6 to sequentially ascend along the guide holes 702 of the adjusting blocks 701, the impact columns 401 of the impact test assemblies 4 can be driven to ascend during the ascending process of the transmission rods 601, and the impact columns 401 are released at a certain height, so that the impact columns 401 apply instantaneous impact to the automobile suspension bushing 8 downward, the plurality of impact columns 401 form the sequential instantaneous impact state through the sequential ascending and descending of the plurality of transmission rods 601, and the automobile suspension bushing 8 can be subjected to the instantaneous impact test under the condition of the continuous compression-torsion composite test, the instantaneous impact that the bushing receives in the actual scene such as passing through a pit, crushing stone or quickly passing through a deceleration zone can be simulated, the mechanical property change, structural damage accumulation and life attenuation law of the bushing under the composite dynamic load are tested, and more actual test data support is provided for the durability design and quality evaluation of the bushing.

[0038] In the embodiment of the application, the plurality of compression-torsion test assemblies 2 are arranged in a ring array, and the compression-torsion test assembly 2 comprises a horizontal clamping piece 21 and a vertical clamping piece 22; the horizontal clamping piece 21 is used for clamping the test shaft 23 that is connected in interference in the inner cavity of the automobile suspension bushing 8, and the torsion test of the automobile suspension bushing 8 is realized through the reciprocating rotation of the horizontal clamping piece 21.

[0039] The horizontal clamping piece 21 comprises a first clamping piece 2101 and a second clamping piece 2102, and the first clamping piece 2101 and the second clamping piece 2102 are rotationally arranged on the top of the base 1; the second clamping piece 2102 is coaxially connected with a bevel gear one 2103, the bevel gear one 2103 is meshingly connected with a bevel gear two 2104, a reciprocating motor 2105 is arranged in the inner cavity of the base 1, and the output end of the reciprocating motor 2105 is connected with the bevel gear two 2104; when the reciprocating motor 2105 reciprocates, the bevel gear two 2104 is driven to reciprocate, the second clamping piece 2102 is driven to reciprocate through the bevel gear one 2103, and the reciprocating rotation of the horizontal clamping piece 21 is realized, and the torsion test of the automobile suspension bushing 8 is realized.

[0040] It is worth mentioning that the vertical clamping piece 22 comprises a lower clamping block 2201 and an upper clamping block 2202, and the upper clamping block 2202 is integrally formed with a pressure receiving block 2203 at the top, and the lower clamping block 2201 and the upper clamping block 2202 are used for clamping the outer side wall of the automobile suspension bushing 8, and through the downward movement of the vertical clamping piece 22, the automobile suspension bushing 8 is continuously pressed to form a pressure test on the automobile suspension bushing 8; wherein the pressure receiving block 2203 is arranged below the impact column 401, and the pressure receiving block 2203 is used for receiving the instantaneous impact of the impact column 401 and transmitting the pressure to the automobile suspension bushing 8; wherein the inner cavity of the base 1 is also provided with a plurality of air cylinders 2204, and the output end of the air cylinder 2204 is connected with the bottom of the lower clamping block 2201, and through the contraction movement of the output end of the air cylinder 2204, the lower clamping block 2201 can be driven to move downward, and then the downward movement of the vertical clamping piece 22 is realized, and the automobile suspension bushing 8 is continuously pressed.

[0041] In the embodiment of the application, the plurality of impact test assemblies 4 are arranged in a ring array, and the impact test assembly 4 comprises a fixed plate 402 arranged on the side wall of the support frame 3, the fixed plate 402 is connected with a guide frame 403, the guide frame 403 is provided with a plurality of guide sliding grooves 404 on the side wall, the impact column 401 is slidingly arranged in the inner cavity of the guide frame 403, the impact column 401 is sleeved with a spring 405 on the circumferential outer wall, the impact column 401 is further connected with a fixed circular plate 406, the spring 405 is arranged between the fixed circular plate 406 and the inner top of the guide frame 403, the fixed circular plate 406 is integrally formed with a plurality of guide blocks 407 on the side wall, the guide blocks 407 are integrally formed with sliding blocks 408 on the side wall, the sliding blocks 408 are slidingly arranged in the guide sliding grooves 404, and the guide blocks 407 are in contact with the inner side wall of the guide frame 403 to slide, so as to ensure the verticality of the vertical movement of the impact column 401. The impact column 401 is rotatably connected with a rotating cylinder 409 on the upper side wall, a plurality of tooth plates 410 are arranged on the outer side wall of the guide frame 403, and a sliding rail 411 is arranged on the other outer side wall of the guide frame 403. When the transmission assembly 6 drives the impact column 401 to move, the impact column 401 slides along the inner cavity of the guide frame 403; during the sliding process, the fixed circular plate 406 on the circumferential outer wall of the impact column 401 moves synchronously, the spring 405 is arranged between the fixed circular plate 406 and the inner top of the guide frame 403, the fixed circular plate 406 compresses or releases the spring 405, and the elastic force of the spring 405 provides power for the subsequent instantaneous impact of the impact column 401. At the same time, the guide blocks 407 on the side wall of the fixed circular plate 406 slide with the inner side wall of the guide frame 403, the sliding blocks 408 on the side wall of the guide blocks 407 slide along the guide sliding grooves 404 on the side wall of the guide frame 403, and the two cooperate to ensure the verticality of the vertical movement of the impact column 401, so as to avoid the deviation of the impact column 401 affecting the impact accuracy.

[0042] In the embodiment of the present application, the plurality of transmission assemblies 6 are arranged in a ring array, and the transmission assembly 6 further comprises a plurality of lifting rods 603, the top of the lifting rod 603 is rotatably arranged with an adaptive plate 604, and the side wall of the adaptive plate 604 is arranged with a plurality of guide wheels 605; a plurality of fixed cylinders 301 are connected to the side wall of the support frame 3, the lifting rod 603 is slidingly arranged in the inner cavity of the fixed cylinder 301, and the bottom of the lifting rod 603 is rotatably connected with the top of the transmission rod 601. The upper side wall of the transmission rod 601 is connected with a support plate 606, the side wall of the support plate 606 is integrally formed with a release plate 607, the side wall of the release plate 607 is provided with a groove 608, a plurality of extrusion sliding grooves 609 are formed in the top of the release plate 607, an extrusion plate 610 is slidingly arranged in the extrusion sliding groove 609, the bottom of the extrusion plate 610 is provided as a slope structure, the bottom of the extrusion plate 610 is connected with a spring two 612 through a connecting block 611, and the other end of the spring two 612 is connected with the side wall of the release plate 607; the groove 608 is used to provide a movable channel for the rotating cylinder 409, when the release plate 607 moves downward from the upward direction of the rotating cylinder 409, the rotating cylinder 409 can pass through the groove 608 and be extruded on the slope structure at the bottom of the extrusion plate 610 to enter the top of the extrusion plate 610, at this time, the extrusion plate 610 forms a supporting action on the rotating cylinder 409.

[0043] In the embodiment of the present application, the bottom of the lifting rod 603 is rotatably connected with the top of the transmission rod 601, and the sliding of the lifting rod 603 can synchronously drive the transmission rod 601 to rise and fall; the release plate 607 on the transmission rod 601 also synchronously moves; when the release plate 607 moves downward from the upward direction of the rotating cylinder 409, the rotating cylinder 409 passes through the groove 608 in the side wall of the release plate 607, and is extruded on the slope structure at the bottom of the extrusion plate 610, the extrusion plate 610 slides along the extrusion sliding groove 609 and stretches the spring two 612 after being pressed; after the rotating cylinder 409 enters the top of the extrusion plate 610, the spring two 612 resets to push the extrusion plate 610 to move back, and the extrusion plate 610 enters the bottom of the rotating cylinder 409 to form a support for the rotating cylinder 409, at this time, the transmission rod 601 rises to drive the rotating cylinder 409 and the impact column 401 to rise through the release plate 607 and the extrusion plate 610; when the subsequent transmission rod 601 rotates, the release plate 607 synchronously rotates, the supporting relationship between the extrusion plate 610 and the rotating cylinder 409 is released, and the release of the impact column 401 is realized. The groove 608 in the side wall of the release plate 607 provides a avoiding space for the movement of the components to avoid movement interference.

[0044] In the embodiment of the present application, the sequential driving assembly 5 comprises a rotating column 501 arranged on the top of the support frame 3, and a rotating motor 502 mounted on the side wall of the support frame 3, the output end of the rotating motor 502 is connected with a gear one 503, the circumferential outer wall of the rotating column 501 is arranged with a tooth 504, and the gear one 503 is meshed and connected with the tooth 504; the circumferential outer wall of the rotating column 501 is connected with an inclined inner circular frame 506 through a plurality of connecting rods 505, the inclined inner circular frame 506 is connected with an inclined outer circular frame 508 through a connecting ring plate 507, and the inclined inner circular frame 506 and the inclined outer circular frame 508 form a circular guide groove 509 therebetween, an upper circular sliding groove 510 and a lower circular sliding groove 511, and the upper circular sliding groove 510 and the lower circular sliding groove 511 are communicated through the circular guide groove 509; the rotating axis direction of the rotating column 501 is vertical, the inclined inner circular frame 506 and the inclined outer circular frame 508 are inclined at an angle in the horizontal direction, and when the rotating column 501 drives the inclined inner circular frame 506 and the inclined outer circular frame 508 to rotate, the inclined inner circular frame 506 and the inclined outer circular frame 508 form a periodic inclined swing rotation state; the adaptive plate 604 is movably arranged in the circular guide groove 509, a plurality of guide wheels 605 are rollingly arranged in the upper circular sliding groove 510, and another plurality of guide wheels 605 are rollingly arranged in the lower circular sliding groove 511.

[0045] Further, when the sequential driving assembly 5 works, the rotating motor 502 drives the gear one 503 to rotate, the gear one 503 drives the rotating column 501 to rotate around the vertical rotating axis through the tooth 504; when the rotating column 501 rotates, the circumferential outer wall thereof drives the inclined inner circular frame 506 to synchronously rotate through the plurality of connecting rods 505; since the inclined inner circular frame 506 is connected with the inclined outer circular frame 508 through the connecting ring plate 507, the inclined outer circular frame 508 rotates together with the inclined inner circular frame 506; since the inclined inner circular frame 506 and the inclined outer circular frame 508 are inclined at an angle in the horizontal direction, they form a periodic inclined swing rotation state in the rotating process; the circular guide groove 509, the upper circular sliding groove 510 and the lower circular sliding groove 511 formed between the inclined inner circular frame 506 and the inclined outer circular frame 508 constitute a transmission track, the adaptive plate 604 is movably arranged in the circular guide groove 509, and a plurality of guide wheels 605 on the side wall of the adaptive plate 604 are rollingly arranged in the upper circular sliding groove 510 and the lower circular sliding groove 511 respectively; when the inclined inner circular frame 506 and the inclined outer circular frame 508 periodically swing and rotate, the track formed thereby produces a periodic lifting guiding effect on the guide wheels 605, thereby driving the adaptive plate 604 and the transmission assembly 6 associated therewith to realize a sequential lifting action, and providing a power basis for the subsequent sequential impact of the impact column 401.

[0046] The present invention designs an inclined inner circular frame 506 and an inclined outer circular frame 508 with an inclined state in the successive drive component 5. The inclined inner circular frame 506 and the inclined outer circular frame 508 can form a periodic inclined swinging rotation state during their rotation. The track formed by the inclined inner circular frame 506 and the inclined outer circular frame 508 produces a periodic lifting and lowering guiding effect on the guide wheel 605, thereby driving the adaptation plate 604 and the transmission rods 601 of the multiple transmission components 6 associated therewith to achieve successive lifting and lowering movements. The multiple transmission rods 601 drive the multiple impact columns 401 to perform successive lifting and lowering movements. There is no need to configure a separate driving mechanism for each impact column 401. The multiple impact columns 401 can form continuous and successive instantaneous impacts on the multiple automobile suspension bushings 8, thereby avoiding energy waste caused by separately configuring driving mechanisms for the multiple impact columns 401. At the same time, the successive impacts of the multiple impact columns 401 disperse the impact load, thereby avoiding the simultaneous impact that easily causes a large impact force on the entire equipment.

[0047] In an embodiment of the present invention, a plurality of guide grooves 703 are provided on the inner wall of the guide hole 702. The guide grooves 703 are composed of a lower vertical groove 7031, a turning groove 7032 and an upper vertical groove 7033. The driving column 602 is movably arranged in the guide groove 703. When the driving column 602 slides from the lower vertical groove 7031 to the turning groove 7032, the driving column 602 can drive the transmission rod 601 to rotate, so that the transmission rod 601 releases the impact column 401 to impact downward; the height of the turning groove 7032 can be adjusted to change the impact stroke of the impact column 401.

[0048] The present invention provides a plurality of guide grooves 703 on the inner side wall of the guide hole 702 of the adjustment block 701, and designs the guide groove 703 as a structural path consisting of a lower vertical groove 7031, a turning groove 7032 and an upper vertical groove 7033. When the successive driving assembly 5 drives the transmission rod 601 to rise along the guide hole 702, the driving column 602 first slides vertically upward along the lower vertical groove 7031. The vertical structure of the lower vertical groove 7031 ensures that there is no additional rotational deviation during the rising process of the transmission rod 601, so that the transmission rod 601 can stably drive the release plate 607 to rise synchronously, and then reliably support the rotating drum 409 at the top of the impact column 401 through the extrusion plate 610, thereby achieving a stable impact column 401. When the driving column 602 slides to the top of the lower vertical slot 7031 and enters the turning slot 7032, the arc-shaped turning path of the turning slot 7032 generates a lateral guiding force on the driving column 602, forcing the driving column 602 to drive the transmission rod 601 to rotate around its own axis. The rotation action is directly transmitted to the release plate 607 on the transmission rod 601, causing the release plate 607 to rotate synchronously, thereby releasing the support relationship between the extrusion plate 610 and the rotating cylinder 409, causing the impact column 401 to quickly impact downward, completing the instantaneous impact action; the guide slot 703 is used to realize the rising and downward punching actions of the impact column 401. The entire process does not require manual intervention or additional program control, which greatly improves the test continuity.

[0049] Further, the side wall of the adjusting block 701 is connected with a support plate 704, the side wall of the support plate 704 is arranged with a sliding plate 705, the sliding plate 705 is in sliding fit with the sliding rail 411 of the outer side wall of the guide frame 403; the side wall of the adjusting block 701 is rotationally arranged with a worm gear 706, the worm gear 706 is coaxially connected with a plurality of gear twos 707, the other side wall of the adjusting block 701 is rotationally arranged with a worm 708, the worm 708 is coaxially connected with a hand wheel 709, the worm 708 is in meshing connection with the worm gear 706, and the gear two 707 is in meshing connection with the toothed plate 410 of the outer side wall of the guide frame 403.

[0050] The hand wheel 709 of the stroke adjusting mechanism 7 is rotated by an operator, the hand wheel 709 drives the coaxially connected worm 708 to rotate, the worm 708 is in meshing connection with the worm gear 706 of the side wall of the adjusting block 701, the worm gear 706 rotates with the worm 708 and drives the coaxially connected gear two 707 to synchronously rotate, the gear two 707 is in meshing connection with the toothed plate 410 of the outer side wall of the guide frame 403, the adjusting block 701 is in sliding fit with the sliding rail 411 of the guide frame 403 through the support plate 704 and the sliding plate 705, the rotation of the gear two 707 is converted into the vertical movement of the adjusting block 701 along the sliding rail 411, so that the height position of the turning groove 7032 in the guide groove 703 of the adjusting block 701 is changed, the height of the turning groove 7032 determines the stroke node when the driving column 602 drives the transmission rod 601 to release the impact column 401, and finally the impact stroke of the impact column 401 is adjusted, the conditions for different instantaneous impact forces are provided, the operation is simple and convenient, and the problem that it is troublesome to adjust the impact force of the impact column 401 is solved.

[0051] In the embodiment, the test method of the automobile bushing life test device is provided, and the test method comprises the following steps: S1, clamping and fixing operation, the inner cavity of the automobile suspension bushing 8 is connected with the test shaft 23 in an interference fit, then the test shaft 23 is clamped and fixed through the horizontal clamping piece 21, and then the outer side wall of the automobile suspension bushing 8 is clamped through the lower clamping block 2201 and the upper clamping block 2202 of the vertical clamping piece 22, and in this way, a plurality of automobile suspension bushings 8 are clamped and fixed respectively; S2, compression and torsion test operation, the test shaft 23 is driven to reciprocate through the reciprocating rotation of the horizontal clamping piece 21, so that the reciprocating torsion force is applied to the automobile suspension bushing 8, and at the same time, the lower moving part of the vertical clamping piece 22 is used to form the state of applying the continuous compression force to the automobile suspension bushing 8; S3, the instantaneous impact test operation is carried out under the pressure torsion condition, the state of the pressure torsion test is kept, the gear one 503 is rotated by the rotating motor 502, the rotating column 501 is rotated by the gear one 503, and then the periodic inclined swing rotation state of the inclined inner circular frame 506 and the inclined outer circular frame 508 is formed, in the process, the adaptive plate 604 rolls in the inclined track structure of the circular guide groove 509, the upper circular groove 510 and the lower circular groove 511 by the guide wheel 605, the inclined track structure generates the periodic lifting guide action to the guide wheel 605, and then the adaptive plate 604 and the lifting rod 603 connected with the adaptive plate 604 are driven to make the successive lifting movement along the inner cavity of the fixed cylinder 301; the lifting action of the lifting rod 603 will synchronously drive the bottom rotating connection transmission rod 601 to slide along the guide hole 702 of the stroke adjusting mechanism 7, at this time, the driving column 602 on the circumferential outer wall of the transmission rod 601 moves upward along the lower vertical groove 7031 of the guide groove 703; at the same time, the transmission rod 601 drives the branch plate 606 and the release plate 607 to synchronously ascend, the release plate 607 supports the rotating cylinder 409 on the top of the impact column 401 by the extrusion plate 610, and pulls the impact column 401 upward together with the transmission rod 601; in the ascending process of the impact column 401, the fixed circular plate 406 on the circumferential outer wall of the impact column 401 will compress the spring one 405 between the top of the guide frame 403 and the fixed circular plate 406, so that the spring one 405 is in the compressed force storage state; at the same time, the guide block 407 on the side wall of the fixed circular plate 406 slides along the inner side wall of the guide frame 403, the slider 408 on the guide block 407 moves synchronously along the guide sliding groove 404, and the stability of the vertical ascending of the impact column 401 is guaranteed; when the driving column 602 slides to the turning groove 7032 along the lower vertical groove 7031, the driving column 602 drives the transmission rod 601 to rotate around the axis line of the driving column 602 under the track guide action of the turning groove 7032, the transmission rod 601 drives the release plate 607 to synchronously rotate, the support relationship between the extrusion plate 610 and the rotating cylinder 409 is released after the release plate 607 rotates, the impact column 401 slides downward along the inner cavity of the guide frame 403 at a high speed under the elastic reset force of the spring one 405, the bottom of the impact column 401 directly impacts the pressure block 2203 on the top of the vertical clamping piece 22, the pressure block 2203 transmits the instantaneous impact force to the clamped automobile suspension bushing 8, and the instantaneous impact action is completed; after single impact, along with the continuous rotation of the inclined inner circular frame 506 and the inclined outer circular frame 508, the guide action of the track to the guide wheel 605 is switched to the descending direction, the transmission rod 601 and the driving column 602 are brought back to the initial position along the upper vertical groove 7033 of the guide groove 703, and the release plate 607 is lowered together with the transmission rod 601, the rotating cylinder 409 re-presses the inclined surface structure on the bottom of the extrusion plate 610 into the top of the extrusion plate 610, the reset is completed, and the next lifting impact cycle is waited; through the above process, the multiple transmission assemblies 6 realize the alternating action under the action of the successive driving assembly 5, so that the multiple impact columns 401 form the continuous and successive instantaneous impact on the corresponding automobile suspension bushings 8; S4, under the same pressure and torsion conditions, the impact test operation of different instantaneous impact forces is carried out, the state of maintaining the pressure and torsion test of the plurality of automobile suspension bushings 8 is kept, the impact stroke of the impact column 401 is changed through the stroke adjusting mechanism 7, and then the loading test of different instantaneous impact forces is realized; The adjustment of the impact stroke and the loading of different impact forces are realized through the following steps: S4.1, the impact stroke adjusting operation, the operator rotates the hand wheel 709 of the stroke adjusting mechanism 7, the hand wheel 709 drives the coaxially connected worm 708 to rotate, because the worm 708 is engaged with the worm gear 706 on the side wall of the adjusting block 701, the worm gear 706 rotates with the worm 708 and drives the coaxially connected gear two 707 to synchronously rotate, and because the gear two 707 is engaged with the tooth plate 410 on the outer side wall of the guide frame 403, and the adjusting block 701 is slidingly matched with the guide frame 403 through the support plate 704 and the sliding plate 705 and the sliding rail 411 of the guide frame 403, the rotation of the gear two 707 will be converted into the vertical movement of the adjusting block 701 along the sliding rail 411, so as to change the height position of the turning groove 7032 in the guide groove 703 in the adjusting block 701. S4.2, the loading test of different impact forces, when the height of the turning groove 7032 is adjusted upward, the stroke of the driving column 602 sliding along the lower vertical groove 7031 to the turning groove 7032 is increased, the height of the impact column 401 driven by the transmission rod 601 to rise is increased, the deformation amount of the spring one 405 compressed in the process of the impact column 401 rising is increased, and the elastic potential energy stored by the spring one 405 is increased; when the driving column 602 enters the turning groove 7032 to release the impact column 401 driven by the transmission rod 601, the energy released by the spring one 405 reset is increased, the instantaneous speed of the impact column 401 downward impact is increased, the instantaneous impact force acting on the automobile suspension bushing 8 is increased through the transmission to the pressure block 2203; when the height of the turning groove 7032 is adjusted downward, the height of the impact column 401 driven by the driving column 602 to rise is reduced, the compression deformation amount of the spring one 405 is reduced, the elastic potential energy storage amount is reduced, the instantaneous speed of the impact column 401 impact is reduced, and the instantaneous impact force acting on the automobile suspension bushing 8 is weakened; by adjusting the height of the turning groove 7032 of the plurality of stroke adjusting mechanisms 7 to be a plurality of different heights, the impact test operation of different instantaneous impact forces on the plurality of automobile suspension bushings 8 under the same pressure and torsion conditions is realized.

[0052] The preferred embodiments are disclosed in the embodiments of the application, but the application is not limited to this. Those skilled in the art can easily understand the spirit of the application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the application, they are within the protection scope of the application.

Claims

1. An automobile bushing life test device, characterized in that: It comprises a base (1), a plurality of compression-torsion test assemblies (2) and a support frame (3) are arranged on the top of the base (1), a plurality of impact test assemblies (4) are arranged on the support frame (3), and the impact test assemblies (4) are arranged above the compression-torsion test assemblies (2); The impact test assembly (4) includes an impact column (401); A sequential drive assembly (5) is arranged on the top of the support frame (3), and a plurality of transmission assemblies (6) are arranged below the sequential drive assembly (5). The transmission assembly (6) is arranged on the side of the impact test assembly (4), and the transmission assembly (6) includes a transmission rod (601). The outer circumferential wall of the transmission rod (601) is connected to a plurality of drive columns (602). The transmission rod (601) is used to drive the impact column (401) to rise and release the impact column (401) to impact downward. The successive driving assembly (5) is capable of driving the plurality of transmission rods (601) to rise and fall successively, so that the plurality of impact columns (401) form a successive instantaneous impact state; A stroke adjustment mechanism (7) is arranged on the side of the impact test assembly (4), and the stroke adjustment mechanism (7) is used to adjust the impact stroke of the impact column (401). The stroke adjustment mechanism (7) includes an adjustment block (701), and the adjustment block (701) is provided with a guide hole (702) from top to bottom. The transmission rod (601) is slidably arranged in the guide hole (702).

2. The vehicle bushing life test device according to claim 1, characterized in that: The plurality of compression-torsion test assemblies (2) are arranged in a ring array, and the compression-torsion test assemblies (2) include a horizontal clamping member (21) and a vertical clamping member (22); The horizontal clamping member (21) is used to clamp the test shaft (23) that is interference-connected in the inner cavity of the automobile suspension bushing (8), and the torsion test of the automobile suspension bushing (8) is achieved through the reciprocating rotation of the horizontal clamping member (21); The vertical clamping member (22) includes a lower clamping block (2201) and an upper clamping block (2202), and a pressure block (2203) is integrally formed on the top of the upper clamping block (2202). The lower clamping block (2201) and the upper clamping block (2202) are used to clamp the outer side wall of the automobile suspension bushing (8), and through the downward movement of the vertical clamping member (22), continuous pressure is applied to the automobile suspension bushing (8), forming a pressure test on the automobile suspension bushing (8); wherein, the pressure block (2203) is arranged below the impact column (401), and the pressure block (2203) is used to receive the instantaneous stamping of the impact column (401) and transmit the pressure to the automobile suspension bushing (8).

3. The vehicle bushing life test device according to claim 2, characterized in that: The plurality of impact test assemblies (4) are arranged in a circular array, and the impact test assemblies (4) include a fixed plate (402) arranged on the side wall of the support frame (3), the side wall of the fixed plate (402) is connected to a guide frame (403), the side wall of the guide frame (403) is provided with a plurality of guide slots (404), the impact column (401) is slidably arranged in the inner cavity of the guide frame (403), the outer circumferential wall of the impact column (401) is provided with a spring (405), and the outer circumferential wall of the impact column (401) is also connected to a fixed circular plate. (406), the spring 1 (405) is arranged between the fixed circular plate (406) and the top of the guide frame (403), the side wall of the fixed circular plate (406) is integrally formed with a plurality of guide blocks (407), the side wall of the guide block (407) is integrally formed with a slider (408), the slider (408) is slidably arranged in the guide slot (404), the guide block (407) and the inner side wall of the guide frame (403) form a contact sliding, which is used to ensure the verticality of the impact column (401) when moving in the vertical direction.

4. The vehicle bushing life test device according to claim 3, characterized in that: The upper side wall of the impact column (401) is rotatably connected to a rotating drum (409), the outer side wall of the guide frame (403) is arranged with a plurality of tooth plates (410), and the other outer side wall of the guide frame (403) is arranged with a slide rail (411).

5. The vehicle bushing life test device according to claim 4, characterized in that: The plurality of transmission assemblies (6) are arranged in a ring array, and the transmission assemblies (6) further include a plurality of lifting rods (603), an adaption plate (604) being rotatably arranged on the top of the lifting rods (603), and a plurality of guide wheels (605) being arranged on the side walls of the adaption plate (604); The side wall of the support frame (3) is connected to a plurality of fixed cylinders (301), the lifting rod (603) is slidably arranged in the inner cavity of the fixed cylinder (301), and the bottom of the lifting rod (603) is rotatably connected to the top of the transmission rod (601).

6. The vehicle bushing life test device according to claim 5, characterized in that: The upper side wall of the transmission rod (601) is connected to a support plate (606), the side wall of the support plate (606) is integrally formed with a release plate (607), the side wall of the release plate (607) is provided with a groove (608), the top of the release plate (607) is provided with a plurality of extrusion chutes (609), an extrusion plate (610) is slidably arranged in the extrusion chutes (609), the bottom of the extrusion plate (610) is set as an inclined structure, the bottom of the extrusion plate (610) is connected to a second spring (612) through a connecting block (611), and the other end of the second spring (612) is connected to the side wall of the release plate (607); The groove (608) is used to provide a movable channel for the rotating drum (409). When the release plate (607) moves downward from the top of the rotating drum (409), the rotating drum (409) can pass through the groove (608) and squeeze the inclined structure at the bottom of the extrusion plate (610) to enter the top of the extrusion plate (610). At this time, the extrusion plate (610) forms a supporting effect on the rotating drum (409).

7. The vehicle bushing life test device according to claim 6, characterized in that: The sequential drive assembly (5) comprises a rotating column (501) rotatably arranged on the top of the support frame (3), and a rotating motor (502) mounted on the side wall of the support frame (3), wherein the output end of the rotating motor (502) is connected to a gear 1 (503), and a tooth opening (504) is arranged on the circumferential outer wall of the rotating column (501), and the gear 1 (503) is meshedly connected with the tooth opening (504); The outer circumferential wall of the rotating column (501) is connected to an inclined inner circular frame (506) via a plurality of connecting rods (505), and the inclined inner circular frame (506) is connected to an inclined outer circular frame (508) via a connecting ring plate (507). A circular guide groove (509), an upper circular smooth groove (510) and a lower circular smooth groove (511) are formed between the inclined inner circular frame (506) and the inclined outer circular frame (508), and the upper circular smooth groove (510) and the lower circular smooth groove (511) are connected via the circular guide groove (509); The adaptable plate (604) is movably arranged in the circular guide groove (509), wherein a plurality of the guide wheels (605) are rollingly arranged in the upper circular guide groove (510), and another plurality of the guide wheels (605) are rollingly arranged in the lower circular guide groove (511).

8. The vehicle bushing life test device according to claim 7, characterized in that: The rotation axis direction of the rotating column (501) is in the vertical direction, and the inclined inner circular frame (506) and the inclined outer circular frame (508) are inclined at an angle in the horizontal direction. When the rotating column (501) drives the inclined inner circular frame (506) and the inclined outer circular frame (508) to rotate, the inclined inner circular frame (506) and the inclined outer circular frame (508) form a periodic inclined swinging rotation state.

9. The vehicle bushing life test device according to claim 8, characterized in that: The inner wall of the guide hole (702) is provided with a plurality of guide grooves (703), the guide grooves (703) being composed of a lower vertical groove (7031), a turning groove (7032) and an upper vertical groove (7033), the driving column (602) being movably arranged in the guide groove (703), and when the driving column (602) slides from the lower vertical groove (7031) to the turning groove (7032), the driving column (602) can drive the transmission rod (601) to rotate, so that the transmission rod (601) releases the impact column (401) to impact downwards; The side wall of the adjustment block (701) is connected to a support plate (704), and the side wall of the support plate (704) is provided with a slide plate (705), and the slide plate (705) is in sliding engagement with a slide rail (411) on the outer side wall of the guide frame (403); A worm wheel (706) is rotatably arranged on the side wall of the regulating block (701), and the worm wheel (706) is coaxially connected to a plurality of gears (707). A worm (708) is rotatably arranged on the other side wall of the regulating block (701), and the worm (708) is coaxially connected to a hand wheel (709). The worm (708) is meshingly connected to the worm wheel (706), and the gear (707) is meshingly connected to a toothed plate (410) on the outer side wall of the guide frame (403).

10. A test method for an automobile bushing life test device, which is applicable to the test device according to claim 9, characterized in that: The following steps are involved: S1, clamping and fixing operation, performing interference connection between the inner cavity of the automobile suspension bushing (8) and the test shaft (23), then clamping and fixing the test shaft (23) by the horizontal clamping member (21), and then clamping the outer side wall of the automobile suspension bushing (8) by the lower clamping block (2201) and the upper clamping block (2202) of the vertical clamping member (22), and clamping and fixing multiple automobile suspension bushings (8) respectively in this way; S2, compression-torsion test operation, through the reciprocating rotation of the horizontal clamping member (21), the test shaft (23) is driven to reciprocate, forming a state in which a reciprocating torsion force is applied to the automobile suspension bushing (8), and at the same time, through the downward movement of the vertical clamping member (22), a state in which a continuous pressure is applied to the automobile suspension bushing (8); S3. Perform an instantaneous impact test under compression-torsion conditions, maintain the compression-torsion test state, and drive multiple transmission rods (601) to perform successive lifting and lowering movements through the successive driving assembly (5); at this time, the driving column (602) on the outer circumferential wall of the transmission rod (601) moves upward along the lower vertical groove (7031); at the same time, the transmission rod (601) drives the release plate (607) to rise synchronously, and the release plate (607) supports the rotating cylinder (409) at the top of the impact column (401) through the extrusion plate (610), and pulls the impact column (401) upward together with the transmission rod (601); during the upward movement of the impact column (401), the spring 1 (405) is in a compressed and force-storing state; when the driving column (602) slides along the lower vertical groove (7031) to the turning groove (7032), the turning groove (7032) ) is guided by the trajectory of the driving column (602), the driving rod (601) drives the transmission rod (601) to rotate around its own axis, and the transmission rod (601) then drives the release plate (607) to rotate synchronously; after the release plate (607) rotates, the support relationship between the extrusion plate (610) and the rotating drum (409) is released, and the impact column (401) slides rapidly downward along the inner cavity of the guide frame (403) under the elastic reset force of the spring 1 (405), and its bottom directly impacts the pressure block (2203), and the pressure block (2203) transmits the instantaneous impact force to the clamped automobile suspension bushing (8), completing the instantaneous impact action; the multiple transmission components (6) realize alternating action under the action of the successive driving components (5), so that the multiple impact columns (401) form continuous and successive instantaneous impacts on the corresponding automobile suspension bushing (8); S4. Performing impact test operations with different instantaneous impact forces under the same compression-torsion conditions, maintaining the compression-torsion test state for multiple automobile suspension bushings (8), and changing the impact stroke of the impact column (401) through the stroke adjustment mechanism (7), thereby achieving loading tests with different instantaneous impact forces; The adjustment of the impact stroke and the loading of different impact forces are achieved through the following steps: S4.1, impact stroke adjustment operation, the operator rotates the hand wheel (709), the hand wheel (709) drives the worm (708) to rotate, the worm wheel (706) rotates with the worm (708) and drives the second gear (707) to roll on the tooth plate (410), thereby driving the adjustment block (701) to move in the vertical direction, thereby changing the height position of the turning groove (7032) in the guide groove (703) in the adjustment block (701); S4.2, different impact force loading test, when the turning groove (7032) is adjusted upward, the stroke of the driving column (602) sliding along the lower vertical groove (7031) to the turning groove (7032) increases, and the height of the impact column (401) driven by the transmission rod (601) increases accordingly, so that the instantaneous impact force of the impact column (401) downward increases; when the turning groove (7032) is adjusted downward, the height of the impact column (401) driven by the driving column (602) decreases, and the instantaneous impact force of the impact column (401) downward decreases; by adjusting the heights of the turning grooves (7032) of the multiple stroke adjustment mechanisms (7) to multiple different heights, it is possible to implement impact test operations with different instantaneous impact forces on multiple automobile suspension bushings (8) under the same compression and torsion conditions.

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