An angle-adjustable load-bearing device for automotive wheel hub impact damage testing

Abstract

This invention relates to an adjustable bearing device for testing the impact damage of automotive wheel hubs. It includes an automotive wheel hub impact crusher, which comprises a frame with a hammer mounted on the upper part of the frame. A wheel hub bearing seat is positioned directly below the hammer, and the bearing seat includes a base. A longitudinal feed platform abuts against the upper surface of the base. Longitudinal guide plates are formed on both sides of the feed platform, and L-shaped guide rail brackets are fitted onto the guide plates on both sides of the feed platform. The guide rail brackets are fixed to the rear end of the base. A longitudinal screw drive mechanism is connected to the front end of the feed platform, and the screw drive mechanism is located on the front end surface of the base and drives the feed platform to move forward and backward. This device allows for convenient and rapid adjustment of the wheel hub impact angle. Its structure has high support strength, and the adjusting components are not easily deformed by impact, enabling long-term stable angle adjustment. Furthermore, the wheel hub can be moved out from under the hammer for installation and disassembly, ensuring good safety.

Description

Technical Field

[0001] This invention relates to the technical field of wheel hub impact testing machines, and more specifically to an angle-adjustable bearing device for testing the impact damage of automobile wheel hubs. Background Technology

[0002] The automotive wheel hub impact failure test is a test of the impact strength of the wheel hub. According to current national standards, the impact test angles for automotive wheel hubs are mainly divided into three types: 13°, 30°, and 90°, each corresponding to different test standards and application scenarios. Existing automotive wheel hub impact failure machines mainly consist of a hammer placed above the wheel hub, which impacts the wheel hub as it falls. Below the hammer is a wheel hub support that allows for angle adjustment. Current wheel hub support systems primarily consist of a support plate hinged to a fixed base at the front end, with the wheel hub mounted on the support plate. The rear end of the support plate... The existing structure has a lead screw drive mechanism, which allows for adjustment of the bearing plate angle to achieve the desired wheel hub angle. However, this structure has several drawbacks: firstly, it cannot quickly adjust the wheel hub angle, requiring many turns of the lead screw to reach the desired maximum; secondly, the impact test affects the lead screw, causing thread deformation and potential jamming during adjustment; and thirdly, the installation and removal of the turbine wheel hub are performed under the impact hammer, posing a safety hazard. Therefore, it is necessary to design a wheel hub mounting bearing that can easily and quickly adjust the wheel hub impact angle while maintaining reliable stability and safety. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an adjustable bearing device for testing the impact damage of automotive wheel hubs. This device allows for convenient and rapid adjustment of the impact angle of the wheel hub, while also exhibiting high structural support strength. The adjustment components are not easily deformed by impact, enabling long-term and stable angle adjustment. Furthermore, it allows the wheel hub to be moved out of the impact hammer for installation and disassembly, ensuring good safety.

[0004] An adjustable bearing device for testing the impact damage of automobile wheel hubs includes an automobile wheel hub impact crusher. The automobile wheel hub impact crusher includes a frame, with a hammer on the upper part of the frame and a wheel hub bearing seat directly below the hammer. The wheel hub bearing seat includes a base, with a longitudinal feed platform abutting against the upper surface of the base. Longitudinal guide plates are formed on both sides of the feed platform, and L-shaped guide rail brackets are fitted on the guide plates on both sides of the feed platform. The guide rail brackets are fixed to the rear end of the base. A longitudinal screw drive mechanism is connected to the front end of the feed platform. The screw drive mechanism is set on the front end surface of the base and drives the feed platform to move forward and backward.

[0005] A horizontal longitudinal support plate is provided directly above the feed platform. The front part of the support plate is hinged to the feed platform via a front hinge bracket. A hub mounting seat is fixed to the upper surface of the rear part of the support plate, and a longitudinally arranged angle adjustment mechanism is provided below it. The angle adjustment mechanism includes an inclined rear support rod. Longitudinal limiting strips are provided on both sides of the rear support rod. The limiting strips are fixed to the feed platform. Several sets of longitudinally distributed positioning slots are formed on the opposite side end faces of the limiting strips. Limiting blocks are inserted into the positioning slots. The rear end of the rear support rod is inserted between the limiting strips and abuts against the limiting blocks. A transverse rear hinge shaft is inserted into the front end of the limiting strip. The two ends of the rear hinge shaft are respectively inserted and fixed to the rear hinge support. The rear hinge support is fixed to the lower end face of the support plate.

[0006] Auxiliary support mechanisms are respectively provided on the limiting strips on both sides of the rear hinge support. The auxiliary support mechanism includes a vertical support plate that abuts against the outer wall of the limiting strip. Several vertical guide grooves are formed on the support plate. T-shaped guide posts are inserted into the upper end of the guide grooves and are fixed to the limiting strip. A semi-circular top block is formed at the upper end of the support plate. The top block abuts against the lower end surface of the bearing plate. An inclined upper wedge is formed on the inner side wall of the top block. A right-angled trapezoidal lower wedge abuts against the lower end surface of the upper wedge and abuts against the upper end surface of the limiting strip. A longitudinal adjusting bolt is pivotally connected to the rear end of the lower wedge. The adjusting bolt is screwed into the positioning seat, and the positioning seat is fixed to the upper end surface of the limiting strip.

[0007] Preferably, an arc-shaped limiting groove is formed on the lower end surface of the rear part of the bearing plate, and semi-circular shapes are formed at both ends of the rear support rod. The front end of the rear support rod is inserted into the limiting groove of the bearing plate and abuts against the bottom surface of the limiting groove; the rear end of the rear support rod abuts against the feed platform and is fixedly connected to a transverse limiting shaft.

[0008] The two side walls of the limiting bar are respectively formed with longitudinal limiting grooves, and the two ends of the limiting shaft are respectively inserted into the limiting grooves of the limiting bar; a T-shaped handle is formed on the upper surface of the limiting block.

[0009] Preferably, the front hinge bracket includes a front hinge seat fixed to the lower end face of the bearing plate, a transverse front hinge shaft inserted into the front hinge seat, and front fixed seats fixed at both ends of the front hinge shaft extending out of the front hinge seat insert sleeve. The upper end of the front fixed seat is arc-shaped and abuts against the lower end face of the bearing plate, and the lower end is fixed to the feed platform. A pad plate opposite to the front end of the bearing plate is fixed to the feed platform on the front side of the front fixed seat.

[0010] Preferably, the positioning seat on the auxiliary support mechanism is arranged on the lower side of the bearing plate and distributed on both sides of the positioning clamping groove; the upper surface of the top block on the support plate and the upper end surface of the support plate are located in the same semi-cylindrical surface; a plurality of locking bolts opposite to the positioning clamping grooves are respectively screwed on the outer side wall of the limiting stopper on one side of the angle adjusting mechanism.

[0011] Preferably, the hub mounting seat comprises a cylindrical lower support seat, the upper end of the lower support seat is pivotally connected with a cylindrical connecting seat, and a plurality of annularly distributed threaded connection holes are formed on the outer ring of the upper end surface of the connecting seat.

[0012] Preferably, guide edge plates on both sides of the feeding platform are respectively provided with guide wheel assemblies, and the guide wheel assemblies are distributed between the guide rail supports;

[0013] The guide wheel assembly comprises a plurality of longitudinally distributed and transversely arranged rollers; a plurality of arc-shaped concave holes are formed on the guide edge plates, and the rollers are respectively inserted into the concave holes of the guide edge plates, extend out of the lower end surfaces of the guide edge plates and abut against the upper end surface of the base; the upper ends of the rollers extend out of the upper end surface of the guide edge plate and abut against a longitudinal pressing strip, a plurality of longitudinally distributed T-shaped connecting columns are inserted into the pressing strip, a spring is sleeved on each connecting column, the upper end of the spring abuts against the head of the connecting column, and the lower end abuts against the pressing strip; the lower ends of the connecting columns are inserted and fixed on the guide edge plate;

[0014] The bases on both sides of the feeding platform are respectively provided with side pressure positioning assemblies, each side pressure positioning assembly comprises an inclined pressure plate in a shape of "匚", the lower end of the inclined pressure plate is inserted with a longitudinal side hinged shaft, two ends of the side hinged shaft are respectively inserted and fixed with a mounting seat, and the mounting seat is fixedly connected to the base; a plurality of groups of positioning insertion slots opposite to the front and rear end side plates of the inclined pressure plate are formed on the side edge of the guide edge plate; an inclined hinged support lug is fixedly connected to the upper surface of the inclined pressure plate, a piston rod of a turnover cylinder is hinged on the hinged support lug through a hinged joint, a mounting ear seat is formed at the bottom of the cylinder body of the turnover cylinder, a pin shaft is inserted in the mounting ear seat, and the turnover cylinder is hinged on the frame through the pin shaft.

[0015] Preferably, the screw driving mechanism comprises a longitudinal screw pivotally connected to the base, and the screw is screwed with a slide block with a cross-shaped horizontal cross-section; a horizontal support plate is formed on the front end face of the feeding platform, a driving seat is fixedly connected to the lower end face of the front end of the support plate, a vertically arranged sliding groove with a cross-shaped cross-section is formed on the driving seat, and the sliding block is inserted into the sliding groove of the driving seat;

[0016] The front end of the screw is pivotally connected with a transverse front support plate, extends out of the front support plate and is fixedly connected with a hand wheel, two ends of the front support plate are respectively fixedly connected with longitudinal support columns, and the rear ends of the support columns are inserted and fixed on the base;

[0017] The base comprises a rectangular supporting bottom plate, and a plurality of longitudinal supporting bottom beams are fixedly connected to the lower end face of the supporting bottom plate.

[0018] The beneficial effects of this invention are as follows:

[0019] This device can easily and quickly adjust the impact angle of the wheel hub. At the same time, its structure has high support strength, and the adjustment parts are not easily deformed by impact, so it can make angle adjustments stably for a long time. In addition, the wheel hub can be moved out of the underside of the impact hammer for installation and disassembly, which is safe. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle;

[0022] Figure 3 This is a partial cross-sectional view of the structure of the present invention from the side;

[0023] Figure 4 This is a top view of the structure of the present invention;

[0024] Figure 5 This is a front view schematic diagram of the bearing device of the present invention installed inside the impact crusher.

[0025] In the diagram: 1. Frame; 2. Hammer; 3. Hub support; 31. Base; 32. Transverse frame; 33. Feed platform; 34. Bearing plate; 35. Front hinge bracket; 36. Hub mounting seat; 37. Angle adjustment mechanism; 38. Auxiliary support mechanism; 39. Guide wheel assembly; 30. Screw drive mechanism; 310. Guide rail bracket; 4. Side pressure positioning assembly; 41. Inclined pressure plate; 42. Mounting seat; 43. Hinge lug; 44. Tilting cylinder. Detailed Implementation

[0026] Example: See Figures 1 to 5 As shown, an adjustable bearing device for testing the impact damage of automobile wheel hubs includes an automobile wheel hub impact crusher. The automobile wheel hub impact crusher includes a frame 1, with a hammer 2 on the upper part of the frame 1. A wheel hub bearing seat 3 is located directly below the hammer 2. The wheel hub bearing seat 3 includes a base 31. A longitudinal feed platform 32 abuts against the upper surface of the base 31. Longitudinal guide plates 321 are formed on both sides of the feed platform 32. L-shaped guide rail brackets 310 are respectively fitted on the guide plates 321 on both sides of the feed platform 32. The guide rail brackets 310 are fixed to the rear end of the base 31. A longitudinal screw drive mechanism 39 is connected to the front end of the feed platform 32. The screw drive mechanism 39 is located on the front end surface of the base 31 and drives the feed platform 32 to move forward and backward.

[0027] A horizontal longitudinal support plate 33 is provided directly above the feed platform 32. The front part of the support plate 33 is hinged to the feed platform 32 through a front hinge bracket 34. A wheel hub mounting seat 35 is fixedly connected to the upper surface of the rear part of the support plate 33, and a longitudinally arranged angle adjustment mechanism 36 is provided below it. The angle adjustment mechanism 36 includes an inclined rear support rod 361. Longitudinal limiting strips 362 are provided on both sides of the rear support rod 361. The limiting strips 362 are fixedly connected to the feed platform 32. Several sets of longitudinally distributed positioning slots 3621 are formed on the opposite side end faces of the limiting strips 362. In this application, there are four sets of positioning slots 3621, which correspond to the positioning settings of 0°, 13°, 30° and 90° from back to front. 0° is the state without impact test, which is convenient for the car wheel hub to be installed on the wheel hub mounting seat 35. It is the installation and disassembly station.

[0028] A limiting block 363 is inserted into the positioning slot 3621. The rear end of the rear support rod 361 is inserted between the limiting bars 362 and abuts against the limiting block 363. A transverse rear hinge shaft 364 is inserted into the front end of the limiting bar 362. The two ends of the rear hinge shaft 364 are respectively inserted and fixed to the rear hinge support 365. The rear hinge support 365 is fixed to the lower end surface of the bearing plate 33.

[0029] Auxiliary support mechanisms 37 are respectively provided on the limiting strips 362 on both sides of the rear hinge support 365. The auxiliary support mechanism 37 includes a vertical support plate 371 that abuts against the outer wall of the limiting strip 362. The support plate 371 has several vertical guide grooves 3711 formed on it. T-shaped guide posts 372 are inserted into the upper end of the guide grooves 3711 and are fixed to the limiting strip 362. The upper end of the support plate 371 has a semi-circular shape. The top block abuts against the lower end surface of the bearing plate 33. An inclined upper wedge 3712 is formed on the inner side wall of the top block. A right-angled trapezoidal lower wedge 373 abuts against the lower end surface of the upper wedge 3712. The lower wedge 373 abuts against the upper end surface of the limiting stop 362. The rear end of the lower wedge 373 is pivotally connected to a longitudinal adjusting bolt 375. The adjusting bolt 375 is screwed to the positioning seat 374. The positioning seat 374 is fixed to the upper end surface of the limiting stop 362.

[0030] The lower end surface of the rear part of the bearing plate 33 is formed with an arc-shaped limiting groove 331. The two ends of the rear support rod 361 are respectively formed with semi-circles. The front end of the rear support rod 361 is inserted into the limiting groove 331 of the bearing plate 33 and abuts against the bottom surface of the limiting groove 331; the rear end of the rear support rod 361 abuts against the feed platform 32 and is fixedly connected to a transverse limiting shaft 366. Figure 3 As shown, its bearing plate 33 is directly supported by the rear support rod 361, which reduces the probability of deformation of the rear hinge shaft 364 under shear force, thus ensuring that the device can stably achieve the angle adjustment of the impact test.

[0031] The limiting bar 362 has longitudinal limiting grooves 3622 formed on both sides of its side walls, and the two ends of the limiting shaft 366 are respectively inserted into the limiting grooves 3622 of the limiting bar 362; the upper surface of the limiting block 363 has a T-shaped handle 3631 formed, and the presence of the handle 3631 can facilitate the removal and placement of the limiting block 363.

[0032] The aforementioned front hinge bracket 34 includes a front hinge seat 331 fixed to the lower end surface of the bearing plate 33. A transverse front hinge shaft 343 is inserted into the front hinge seat 341. Both ends of the front hinge shaft 343 extend out of the front hinge seat 341 and are respectively fitted with front fixing seats 342. The upper end of the front fixing seat 342 is arc-shaped and abuts against the lower end surface of the bearing plate 33, while the lower end is fixed to the feed platform 32. A pad 344 opposite to the front end of the bearing plate 33 is fixed to the feed platform 32 on the front side of the front fixing seat 342. Similarly, based on the direct support of the front fixing seat 342, the probability of deformation of the front hinge shaft 343 under shear force can be reduced, which is also to ensure that the device can stably achieve the angle adjustment of the impact test. The pad 344 exists because when the bearing plate 33 is rotated to 90 degrees, its front end becomes the lower end and abuts against the pad 344, using the pad 344 for support.

[0033] The positioning seats 374 on the auxiliary support mechanism 37 are located on the lower side of the bearing plate 33 and distributed on both sides of the positioning slot 3621; the upper surface of the top block on the support plate 371 and the upper end face of the support plate 371 are in the same semi-cylindrical surface; a number of locking bolts 367 opposite to the positioning slot 3621 are screwed onto the outer wall of the limiting stop bar 362 on one side of the angle adjustment mechanism 36. By tightening the locking bolts 367, the limiting stop block 363 set in the positioning slot 3621 can be fixed to prevent the limiting stop block 363 from disengaging from the limiting stop bar 362 during the impact test.

[0034] The wheel hub mounting seat 35 includes a cylindrical lower support seat 351, and a cylindrical connecting seat 352 is pivotally connected to the upper end of the lower support seat 351. The outer ring of the upper end face of the connecting seat 352 is formed with a plurality of annularly distributed threaded connecting holes 3521. The car wheel hub is mainly based on the mounting holes to insert bolts, and then fixed in the threaded connecting holes 3521 of the connecting seat 352 by bolt installation.

[0035] Guide wheel assemblies 38 are respectively provided on the guide side plates 321 on both sides of the feed platform 32, and the guide wheel assemblies 38 are distributed between the guide rail brackets 310; because the impact test requires the feed platform 32 to abut against the base 31, the impact force is borne by the base 31; when the feed platform 32 needs to be moved, if the feed platform 32 abuts against the base 31, the friction force between the feed platform 32 and the base is not convenient for the movement of the feed platform 32, therefore, the structure that the guide wheel assembly 38 enables the feed platform 32 to upwardly separate from the base 31 is designed, and the specific structure thereof is as follows:

[0036] The guide wheel assembly 38 comprises a plurality of rollers 381 that are longitudinally distributed and transversely arranged; a plurality of arc-shaped concave holes are formed on the guide side plates 321, the rollers 381 are respectively inserted into the concave holes of the guide side plates 321, extend out of the lower end faces of the guide side plates 321 and abut against the upper end face of the base 31; the upper ends of the rollers 381 extend out of the upper end face of the guide side plates 321 and abut against longitudinal pressing strips 382, a plurality of T-shaped connecting columns 383 distributed longitudinally are inserted on the pressing strips 382, springs 384 are sleeved on the connecting columns 383, the upper ends of the springs 384 press against the heads of the connecting columns 383, and the lower ends of the springs 384 press against the pressing strips 382; the lower ends of the connecting columns 383 are inserted and fixed on the guide side plates 321; when the side pressure positioning assembly 4 described below does not flip and press the guide side plate 321, the feed platform 32 is jacked up by the acting force of the spring 384 through the rollers 381, so that rolling friction is formed between the feed platform 32 and the base 31, which facilitates the movement of the feed platform 32; when the side pressure positioning assembly 4 flips and presses down the guide side plate 321, the feed platform 32 moves down to abut against the base 31, and the fixed positioning of the feed platform 32 is realized at the same time, which facilitates the impact test;

[0037] Side pressure positioning assemblies 4 are respectively arranged on the bases 31 on both sides of the feed platform 32, the side pressure positioning assembly 4 comprises an inclined pressure plate 41 in a shape of "匚", a longitudinal side hinged shaft is inserted at the lower end of the inclined pressure plate 41, mounting seats 42 are respectively inserted and fixed at both ends of the side hinged shaft, and the mounting seats 42 are fixedly connected to the base 31; a plurality of groups of positioning slots 323 opposite to the front and rear end side plates of the inclined pressure plate 41 are formed on the side edge of the guide side plate 321; an inclined hinged support lug 43 is fixedly connected to the upper surface of the inclined pressure plate 41, a piston rod of a turning cylinder 44 is hinged on the hinged support lug 43 through a hinged joint, a mounting ear seat is formed at the bottom of the cylinder body of the turning cylinder 44, a pin shaft is inserted in the mounting ear seat, and the turning cylinder 44 is hinged on the frame 1 through the pin shaft; as Figure 4 shown, three groups of positioning slots 323 distributed front and back are respectively arranged on the guide side plate 321, which are a rear slot group a, a middle slot group b and a front slot group c respectively, corresponding to the positions of the bearing plate at 13°, 30° and 90° respectively (when the angle of the bearing plate is adjusted, the front and rear positions of the automobile wheel hub arranged thereon will also change, based on the setting of the above slot groups, the adjusted automobile wheel hub can be arranged directly below the punching hammer 2 conveniently).

[0038] The lead screw drive mechanism 39 includes a longitudinally mounted lead screw 393 pivotally connected to the base 31, and a slider 392 with a horizontal cross-section in the shape of a cross screw screw 393 screwed onto the lead screw 393. A horizontal support plate 322 is formed on the front end face of the feed platform 32, and a drive seat 391 is fixedly connected to the lower end face of the front end of the support plate 322. A vertical groove with a cross-section in the shape of a cross screw is formed on the drive seat 391, and the slider 392 is inserted into the groove of the drive seat 391. Because the feed platform 32 will be adjusted up and down, the lead screw drive mechanism 39 also needs to be equipped with a structure that allows the feed platform 32 to move up and down to avoid jamming.

[0039] The front end of the lead screw 393 is pivotally connected to a transverse front support plate 394. A handwheel 395 is fixedly connected to the front support plate 394. Both ends of the front support plate 394 are respectively fixedly connected to longitudinal support columns 396. The rear end of the support column 396 is inserted and fixed on the base 31.

[0040] The base 31 includes a rectangular support plate 311, and several longitudinal support beams 312 are fixed to the lower end surface of the support plate 311. The height of the base 31 is such that the handwheel 395 can be disengaged from the bottom surface for rotational adjustment.

[0041] Working principle: This structure is an angle-adjustable bearing device, which is mainly used as a base for mounting and bearing the impact test of the turbine hub. Based on the screw drive mechanism 39, the bearing plate 33 set on the feed platform 32 can be moved forward and moved out of the bottom of the impact hammer 2 to realize the installation, disassembly and corresponding impact angle adjustment of the automobile hub, thereby improving safety.

[0042] Meanwhile, the bearing plate 33 of this application achieves angle adjustment based on the rear angle adjustment mechanism 36. During the adjustment process, it is mainly affected by the tilt angle of the rear support rod 361. The angle of the rear support rod 361 is limited by the limit block 363 inserted on the limit stop 362. That is, adjusting the position of the limit block 363 can achieve the angle adjustment of the bearing plate 33, which is relatively convenient. At the same time, in order to facilitate the impact deformation of the rear support rod 361, two sets of auxiliary support mechanisms 37 with wedge blocks are designed on both sides. Based on the support of the bearing plate 33 by the auxiliary support mechanism 37, the deformation of the rear support rod 361 is avoided.

[0043] Finally, through the control of the lead screw drive mechanism 39, the adjusted turbine hubs can be precisely moved to directly below the impact hammer 2, thereby ensuring the accuracy of the impact test data.

[0044] The embodiments described are illustrative of the invention and are not intended to limit the invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the invention; therefore, the scope of protection of the invention should be as set forth in the claims.

Claims

1. An angle-adjustable bearing device for testing the impact damage of automobile wheel hubs, comprising an automobile wheel hub impact crusher, the automobile wheel hub impact crusher comprising a frame (1), an impact hammer (2) provided on the upper part of the frame (1), and a wheel hub bearing seat (3) provided directly below the impact hammer (2), characterized in that: The hub support (3) includes a base (31), a longitudinal feed platform (32) abutting against the upper surface of the base (31), longitudinal guide plates (321) are formed on both sides of the feed platform (32), and L-shaped guide rail brackets (310) are respectively fitted on the guide plates (321) on both sides of the feed platform (32). The guide rail brackets (310) are fixed to the rear end of the base (31). A longitudinal screw drive mechanism (39) is connected to the front end of the feed platform (32). The screw drive mechanism (39) is set on the front end surface of the base (31) and drives the feed platform (32) to move forward and backward. A horizontal longitudinal support plate (33) is provided directly above the feed platform (32). The front part of the support plate (33) is hinged to the feed platform (32) through a front hinge bracket (34). A hub mounting seat (35) is fixed to the upper surface of the rear part of the support plate (33), and a longitudinally arranged angle adjustment mechanism (36) is provided below it. The angle adjustment mechanism (36) includes an inclined rear support rod (361). Longitudinal limiting bars (362) are provided on both sides of the rear support rod (361). The limiting bars (362) are fixed to the feed platform (32) to limit the movement of the load. Several sets of longitudinally distributed positioning slots (3621) are formed on the opposite two end faces of the baffle (362). A limiting block (363) is inserted in the positioning slot (3621). The rear end of the rear support rod (361) is inserted between the limiting baffles (362) and abuts against the limiting block (363). A transverse rear hinge shaft (364) is inserted into the front end of the limiting baffle (362). The two ends of the rear hinge shaft (364) are respectively inserted and fixed to the rear hinge support (365). The rear hinge support (365) is fixed to the lower end face of the bearing plate (33). Auxiliary support mechanisms (37) are respectively provided on the limiting strips (362) on both sides of the rear hinge support (365). The auxiliary support mechanism (37) includes a support plate (371) that abuts against the outer wall of the limiting strip (362) and is vertical. The support plate (371) has several vertical guide grooves (3711) formed on it. A T-shaped guide post (372) is inserted into the upper end of the guide groove (3711) and is fixed to the limiting strip (362). The upper end of the support plate (371) is formed with a semi-circular shape. A top block of shape is formed, which abuts against the lower end surface of the bearing plate (33). An inclined upper wedge (3712) is formed on the inner side wall of the top block. A right-angled trapezoidal lower wedge (373) abuts against the lower end surface of the upper wedge (3712). The lower wedge (373) abuts against the upper end surface of the limiting stop (362). The rear end of the lower wedge (373) is pivotally connected to a longitudinal adjusting bolt (375). The adjusting bolt (375) is screwed to the positioning seat (374). The positioning seat (374) is fixed to the upper end surface of the limiting stop (362).

2. The adjustable bearing device for automobile wheel hub impact damage testing according to claim 1, characterized in that: The lower end of the rear part of the bearing plate (33) is formed with an arc-shaped limiting groove (331), and the two ends of the rear support rod (361) are respectively formed with semi-circles. The front end of the rear support rod (361) is inserted into the limiting groove (331) of the bearing plate (33) and abuts against the bottom surface of the limiting groove (331); the rear end of the rear support rod (361) abuts against the feed platform (32) and is connected and fixed with a transverse limiting shaft (366). The two side walls of the limiting bar (362) are respectively formed with longitudinal limiting grooves (3622), and the two ends of the limiting shaft (366) are respectively inserted into the limiting grooves (3622) of the limiting bar (362); a T-shaped handle (3631) is formed on the upper surface of the limiting block (363).

3. The adjustable bearing device for automobile wheel hub impact damage testing according to claim 1, characterized in that: The front hinge bracket (34) includes a front hinge seat (331) fixed to the lower end face of the bearing plate (33). A transverse front hinge shaft (343) is inserted into the front hinge seat (341). Both ends of the front hinge shaft (343) extend out of the front hinge seat (341) and are fixed with front fixing seats (342). The upper end of the front fixing seat (342) is arc-shaped and abuts against the lower end face of the bearing plate (33), and the lower end is fixed to the feed platform (32). A pad (344) opposite to the front end of the bearing plate (33) is fixed to the feed platform (32) on the front side of the front fixing seat (342).

4. The adjustable bearing device for automobile wheel hub impact damage testing according to claim 1, characterized in that: The positioning seat (374) on the auxiliary support mechanism (37) is located on the lower side of the bearing plate (33) and distributed on both sides of the positioning slot (3621); the upper surface of the top block on the support plate (371) and the upper end face of the support plate (371) are in the same semi-cylindrical surface; a number of locking bolts (367) opposite to the positioning slot (3621) are screwed onto the outer wall of the limiting stop (362) on one side of the angle adjustment mechanism (36).

5. The adjustable bearing device for automobile wheel hub impact damage testing according to claim 1, characterized in that: The hub mounting seat (35) includes a cylindrical lower support seat (351), and a cylindrical connecting seat (352) is pivotally connected to the upper end of the lower support seat (351). The outer ring of the upper end face of the connecting seat (352) is formed with a plurality of annularly distributed threaded connecting holes (3521).

6. The adjustable bearing device for automobile wheel hub impact damage testing according to claim 1, characterized in that: Guide wheel assemblies (38) are respectively provided on the guide side plates (321) on both sides of the feed platform (32), and the guide wheel assemblies (38) are distributed between the guide rail brackets (310); The guide wheel assembly (38) according to said claim comprises a plurality of rollers (381) distributed longitudinally and arranged transversely; a plurality of arc-shaped concave holes are formed on the guide side plate (321), the rollers (381) are respectively inserted into the concave holes of the guide side plate (321), extend out of the lower end face of the guide side plate (321) and abut against the upper end face of the base (31); the upper ends of the rollers (381) extend out of the upper end face of the guide side plate (321) and abut against a longitudinal pressing strip (382), a plurality of T-shaped connecting columns (383) distributed longitudinally are inserted into the pressing strip (382), a spring (384) is sleeved on the connecting column (383), the upper end of the spring (384) presses against the head of the connecting column (383), and the lower end presses against the pressing strip (382); the lower end of the connecting column (383) is inserted and fixed on the guide side plate (321); The bases (31) on both sides of the feed platform (32) are respectively provided with side pressing positioning assemblies (4), the side pressing positioning assembly (4) comprises an inclined pressing plate (41) shaped like a Chinese character '匚', the lower end of the inclined pressing plate (41) is inserted with a longitudinal side hinged shaft, two ends of the side hinged shaft are respectively inserted and fixed with mounting seats (42), and the mounting seats (42) are fixedly connected to the base (31); a plurality of groups of positioning slots (323) opposite to the front and rear end side plates of the inclined pressing plate (41) are formed on the side edge of the guide side plate (321); an inclined hinged support lug (43) is fixedly connected to the upper surface of the inclined pressing plate (41), a piston rod of a turning cylinder (44) is hinged to the hinged support lug (43) through a hinged joint, a mounting ear seat is formed at the bottom of the cylinder body of the turning cylinder (44), a pin shaft is inserted into the mounting ear seat, and the turning cylinder (44) is hinged to the frame (1) through the pin shaft.

7. The adjustable bearing device for automobile wheel hub impact damage testing according to claim 6, characterized in that: The lead screw driving mechanism (39) comprises a longitudinal lead screw (393) pivotally connected to the base (31), and the lead screw (393) is screwed onto a slider (392) with a cross-shaped horizontal cross-section; a horizontal support plate (322) is formed on the front end face of the feed platform (32), a driving seat (391) is fixedly connected to the lower end face of the front end of the support plate (322), a vertical sliding groove with a cross-shaped cross-section is formed on the driving seat (391), and the slider (392) is inserted into the sliding groove of the driving seat (391); The front end of the lead screw (393) is pivotally connected with a transverse front supporting plate (394) and extends out of the front supporting plate (394) to be fixedly connected with a hand wheel (395), two ends of the front supporting plate (394) are respectively fixedly connected with a longitudinal supporting column (396), and the rear end of the supporting column (396) is inserted and fixed on the base (31); The base (31) comprises a rectangular supporting bottom plate (311), and a plurality of longitudinal supporting bottom beams (312) are fixedly connected to the lower end face of the supporting bottom plate (311).

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