Rotary lifting multifunctional test bed

Abstract

The utility model is applicable to the field of experimental equipment, and provides a rotary lifting multifunctional test bed, which comprises a workbench, a lifting cylinder seat, a lifting electric cylinder, lifting seats and a lifting rotating cross beam, the lifting rotating cross beam is clamped between the opposite lifting seats, and the lifting rotating cross beam comprises a rotating part and a fixed part. The corresponding positions of the fixed part and the rotating part are clamped with a cross beam rotating supporting shaft in a limiting mode, the periphery of the cross beam rotating supporting shaft is sleeved with a cross beam rotating flange and a cross beam rotating supporting flange, the rotating part is fixedly connected with the cross beam rotating flange, and the fixed part is fixedly connected with the cross beam rotating supporting flange. And the cross beam rotating supporting flange is rotationally connected with the cross beam rotating flange. According to the rotary lifting multifunctional test bed disclosed by the invention, the lifting rotary cross beam is moved under the action of the lifting electric cylinder and the lifting seat, and the lifting rotary cross beam is rotated at multiple angles of 0-90 degrees through the rotation of the cross beam rotary supporting flange and the cross beam rotary flange, so that the detection efficiency of a shock absorber is effectively improved, and the test cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to experimental equipment technical field especially relates to a rotary lifting multifunctional test bench. BACKGROUND

[0002] Shock absorber (also known as shock absorber), is used to suppress spring vibration after absorbing the bounce and the impact from the road. Shock absorber is widely used in automobile, for accelerating the damping of the frame and the body vibration, to improve the ride comfort of the automobile. The shock absorber usually needs to be tested in the bench test stage before use.

[0003] The current test bench usually needs to be installed vertically or horizontally, and then the shock absorber is tested. Due to the diversification of the test requirements of the shock absorber, the test angle is different, and usually a test bench cannot meet the corresponding requirements, so more test equipment needs to be purchased to test the multiple indicators of the shock absorber.

[0004] However, this test bench can only test the shock absorber vertically or horizontally, which cannot meet the requirements of multi-angle test of the shock absorber. If one kind of equipment is purchased for each test requirement, more test equipment needs to be purchased for multiple tests, which causes waste of test resources and high investment cost of test equipment.

[0005] Therefore, how to provide a test bench capable of testing the shock absorber at multiple angles is a problem to be solved by the present application. UTILITY MODEL CONTENTS

[0006] The utility model provides a rotary lifting multifunctional test bench, which aims to solve the problem of how to ensure that the same equipment can test the shock absorber at multiple angles during the test of the shock absorber.

[0007] The utility model is realized in this way, and the utility model provides a rotary lifting multifunctional test bench for testing the shock absorber, which comprises a workbench, the workbench is symmetrically provided with a lifting cylinder seat, the lifting cylinder seat is fixedly connected with a lifting electric cylinder;

[0008] The free end of the lifting electric cylinder is fixedly connected with a lifting seat, and the opposite two lifting seats are clamped and connected with a lifting rotary cross beam, the lifting rotary cross beam is detachably provided with an actuator, and the lifting rotary cross beam comprises a rotating part and a fixed part fixedly connected with the lifting seat, wherein

[0009] The fixed part and the rotating part are limited and clamped by a crossbeam rotating supporting shaft at corresponding positions, the crossbeam rotating supporting shaft is sleeved with a crossbeam rotating flange and a crossbeam rotating supporting flange on the outer periphery, the rotating part is fixedly connected with the crossbeam rotating flange, the fixed part is fixedly connected with the crossbeam rotating supporting flange, and the crossbeam rotating supporting flange is rotationally connected with the crossbeam rotating flange.

[0010] Optionally, a sliding installation hole is arranged on the crossbeam rotating flange, a sliding groove matched with the sliding installation hole is arranged on the crossbeam rotating supporting flange, and the crossbeam rotating supporting flange is slidably matched with the sliding installation hole through the sliding groove.

[0011] Optionally, the sliding groove has two sliding grooves arranged near the outer periphery of the crossbeam rotating supporting flange.

[0012] Optionally, a threaded hole is arranged on the crossbeam rotating flange, a bolt is arranged on the crossbeam rotating flange through the threaded hole, a rotation angle gear is arranged on the bolt near the crossbeam rotating supporting flange, and the rotation angle gear is engaged with the crossbeam rotating supporting flange.

[0013] Optionally, guide supporting seats are vertically arranged on the top and the bottom of the workbench, guide bases are fixedly arranged on the guide supporting seats, and guide rods are threadedly fixed between two opposite guide bases, and the fixed part is slidably connected with the guide rods.

[0014] Optionally, a thrust cylinder is arranged on the fixed part, a crossbeam locking device is connected with the telescopic rod of the thrust cylinder, and the crossbeam locking device is used for locking the rotating part.

[0015] Optionally, an actuator mounting hole and an actuator rod mounting hole are arranged at the middle position of the rotating part, the actuator mounting hole and the actuator rod mounting hole are communicated, an actuator is mounted in the actuator mounting hole, and the actuator rod mounting hole is used for mounting a test actuator rod.

[0016] Optionally, the free end of the test actuator rod is hingedly connected with one end of a to-be-tested shock absorber, and the other end of the to-be-tested shock absorber is hingedly connected with the workbench.

[0017] Optionally, supporting shaft mounting grooves are arranged at two ends of the rotating part, and the same supporting shaft mounting grooves are arranged on the fixed part opposite to the rotating part, and the crossbeam rotating supporting shaft is rotationally clamped in the corresponding two supporting shaft mounting grooves.

[0018] Optionally, the crossbeam locking device comprises a wedge-shaped block, the wedge-shaped block is slidably connected in the fixed part, through holes are arranged on the wedge-shaped block and the fixed part, and the corresponding two through holes are used for forming a bolt hole.

[0019] The utility model discloses reached beneficial effect: the utility model provides a kind of rotary lifting multifunctional test bench, including workbench, lifting cylinder seat, lifting electric cylinder, lifting seat and lifting rotary crossbeam, relative two lifting seats are clamped and connected lifting rotary crossbeam, lifting rotary crossbeam includes rotating part and fixed part, fixed part and rotating part corresponding position limit clamping have crossbeam rotary support shaft, crossbeam rotary support shaft outer sleeve connects crossbeam rotary flange and crossbeam rotary support flange, rotating part is fixedly connected with crossbeam rotary flange, fixed part is fixedly connected with crossbeam rotary support flange, and crossbeam rotary support flange is rotatably connected with crossbeam rotary flange.The rotary lifting multifunctional test bench disclosed in the present application is pushed to move by lifting electric cylinder and lifting seat under the action of lifting rotary crossbeam, so as to realize the movement of lifting rotary crossbeam, and then the rotating part is rotated at 0-90 degrees of multiple angles under the action of crossbeam rotary support flange and crossbeam rotary flange, so as to achieve the arbitrary adjustment of the damper at different angles.The rotary lifting multifunctional test bench disclosed in the present application not only can realize the test of damper at different angles by using the same equipment, effectively improve the convenience and detection efficiency of damper test, and also can greatly reduce the cost optimization caused by the comprehensive detection of multiple devices in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 It is the overall structure schematic diagram of the rotary lifting multifunctional test bench provided by the present application.

[0023] Figure 2 It is the structure schematic diagram of the experimental bench main body structure provided by the present application.

[0024] Figure 3 It is the specific structure schematic diagram of the lifting rotary crossbeam of the rotary lifting multifunctional test bench provided by the present application.

[0025] Figure 4 It is the partial structure enlarged view of part A in the rotary lifting multifunctional test bench provided by the present application. Figure 1

[0026] Figure 5 ​is the structural schematic diagram of the beam rotating flange provided in the application.

[0027] Figure 6 is the structural schematic diagram of the beam rotating supporting flange provided in the application.

[0028] Figure 7 is the fixed part main structural schematic diagram of the lifting rotating beam provided in the application.

[0029] Figure 8 is the fixed part top view structural schematic diagram of the lifting rotating beam provided in the application.

[0030] Figure 9 is the fixed part partial structural schematic diagram of the lifting rotating beam provided in the application.

[0031] Figure 10 is the rotating part main structural schematic diagram of the lifting rotating beam provided in the application.

[0032] Figure 11 is the rotating part top view structural schematic diagram of the lifting rotating beam provided in the application.

[0033] Reference signs:

[0034] 1-actuator, 2-beam rotating flange, 3-beam rotating supporting flange, 4-beam rotating supporting shaft, 5-beam locking device, 6-lifting rotating beam, 7-thrust cylinder, 8-lifting seat, 9-rotation angle gear, 10-test actuator rod, 11-damper to be measured, 12-guiding seat, 13-guiding supporting seat, 14-lifting electric cylinder, 15-lifting cylinder seat, 16-workbench, 17-actuator mounting hole, 18-actuator rod mounting hole, 19-fixed part, 20-rotating part, 21-supporting shaft mounting groove, 22-sliding mounting hole, 23-guiding rod, 24-sliding groove, 25-threaded hole, 26-experimental bench main body structure, 27-through hole, 28-wedge block. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model more clear and understandable, the following will make further detailed description to the utility model by combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0036] In order to effectively illustrate the utility model examples, the following will make detailed description to the application examples by referring to the drawings.

[0037] Combined with Figure 1 and Figure 2 The structural schematic diagram of a rotating lifting multifunctional test bench in a non-working state provided by the application example is shown, Figure 1This is a schematic diagram of the overall structure of the rotating and lifting multifunctional test bench disclosed in this application. Figure 2 This application discloses a rotary lifting multifunctional test bench.

[0038] like Figure 1 and Figure 2 As shown, this application discloses a rotary lifting multifunctional test bench, mainly used for testing vibration dampers. The rotary lifting multifunctional test bench includes a main test bench structure 26, which can be configured as follows: Figure 2 The structure is shaped like the number "4" to ensure the stability of the entire structure. The main body 26 of the experimental platform can be fixed to a tabletop or the ground with bolts to enable the testing of the vibration damper. A workbench 16 is provided on the main body 26 of the experimental platform, and lifting cylinder seats 15 are symmetrically arranged on the workbench 16. The lifting cylinder seats 15 are fixedly connected to the lifting electric cylinder 14, and the lifting cylinder seats 15 are fixed to the workbench 16 with bolts to ensure the stability of the lifting electric cylinder 14.

[0039] In specific implementation, the free end of the lifting electric cylinder 14 is fixedly connected to a lifting seat 8, and a lifting rotating beam 6 is clamped between two opposing lifting seats 8. An actuator 1 is detachably installed on the lifting rotating beam 6, and the lifting rotating beam 6 can rotate, thereby enabling multi-angle detection of the shock absorber. Of course, the lifting rotating beam 6 can also achieve multi-angle rotation by rotating with the lifting seat 8.

[0040] Of course, in the specific implementation process, it can also be combined with Figure 3 The publicly disclosed structural view of the lifting and rotating crossbeam provides a detailed description. Specifically, the lifting and rotating crossbeam 6 includes a rotating part 20 and a fixing part 19 fixedly connected to the lifting seat 8. Two fixing parts 19 are provided, each with one end fixedly connected to the lifting seat 8 via bolts. The rotating part 20 is positioned between the two fixing parts 19. In practice, the fixing part 19 and the rotating part 20 are respectively positioned and locked with a crossbeam rotating support shaft 4. A crossbeam rotating flange 2 and a crossbeam rotating support flange 3 are sleeved on the outer periphery of the crossbeam rotating support shaft 4. The rotating part 20 of the lifting and rotating crossbeam 6 is fixedly connected to the crossbeam rotating flange 2, and the fixing part 19 of the lifting and rotating crossbeam 6 is fixedly connected to the crossbeam rotating support flange 3. The crossbeam rotating support flange 3 is rotatably connected to the crossbeam rotating flange 2.

[0041] The application ensures the rotatable connection between the fixed part 19 and the rotating part 20 of the lifting rotating cross beam 6 through the cross beam rotating support shaft 4, and through the rotation connection of the cross beam rotating flange 2 and the cross beam rotating support flange 3, so that the cross beam rotating flange 2 can rotate along the cross beam rotating support flange 3, and then drive the rotating part 20 to rotate, so that the actuator 1 rotates at different angles, thereby realizing the detection of the shock absorber 11 at different angles. On the one hand, it realizes multi-angle detection of the shock absorber and improves the detection efficiency, and on the other hand, it can also reduce the purchase cost of purchasing multiple devices for multi-angle detection of the shock absorber by using the prior art.

[0042] In order to ensure the effective rotation of the cross beam rotating flange 2 and the cross beam rotating support flange 3, the application can be combined with the attached Figure 4 to the attached Figure 6 The relevant structure is described, wherein the attached Figure 4 is an enlarged view of part of the rotating part 20, the attached Figure 5 and the attached Figure 6 are structure diagrams of the cross beam rotating flange 2 and the cross beam rotating support flange 3, respectively. As shown in the drawings, the cross beam rotating flange 2 is provided with a sliding installation hole 22, which can be a threaded hole, and the sliding installation hole 22 is arranged close to the surface of the cross beam rotating support flange 3. The cross beam rotating support flange 3 is provided with a sliding groove 24 matched with the sliding installation hole 22, and the sliding groove 24 penetrates the cross beam rotating support flange 3. The cross beam rotating support flange 3 can be slidably connected with the sliding installation hole 22 through a sliding rod penetrating the sliding groove 24. Specifically, the sliding rod is slidably connected with the sliding groove 24, and the end of the sliding rod can be provided with a thread matched with the sliding installation hole 22 to realize the threaded fixed connection of the two, so that the sliding rod rotates along the sliding groove 24 when the cross beam rotating flange 2 rotates, thereby realizing the rotation of the rotating part 20 relative to the fixed part 19.

[0043] Of course, in the specific implementation process, the sliding groove 24 can be an annular groove arranged concentrically with the cross beam rotating support flange 3, so as to realize the free rotation of the rotating part 20. At the same time, the sliding installation hole 22 and the sliding groove 24 are not limited to the above-mentioned manner, and the sliding installation hole 22 can also be arranged on the cross beam rotating support flange 3, and the sliding groove 24 can be arranged on the cross beam rotating flange 2, so as to realize the relative rotation of the two. Of course, the above is only an exemplary embodiment, and is not limited thereto. The working mode and working state of each other can also be processed according to the actual situation.

[0044] As shown in the attached Figures 4-6The structure view shown is illustrative. The sliding groove 24 disclosed in the application has two, which are arranged near the outer periphery of the beam rotating support flange 3, and each sliding groove 24 can ensure that the rotating part 20 at least realizes 0-90 degree rotation. The beam rotating flange 2 is provided with a threaded hole 25, the beam rotating flange 2 is provided with a bolt penetrating the threaded hole 25, and a rotation angle gear 9 is arranged on the bolt near the beam rotating support flange 3, which is engaged with the beam rotating support flange 3. Of course, in the specific implementation process, a stop nut is also arranged adjacent to the rotation angle gear 9, which is screwed onto the bolt, so as to avoid the beam rotating flange 2 from causing the rotation angle gear 9 to fall off during rotation. The arrangement of the rotation angle gear 9 can ensure the effective rotation of the beam rotating flange 2, avoid the problem of rapid rotation or inability to rotate, and thus cannot accurately control the angle of the rotating part 20, thereby cannot accurately control the angle of the shock absorber test. In another aspect, it can further control the accuracy of multi-angle adjustment.

[0045] Of course, in the specific implementation process, the top and bottom of the workbench 16 are vertically provided with guide support seats 13, and the guide support seats 13 arranged on the top and bottom are oppositely arranged. The guide support seat 13 can be arranged only on the bottom of the workbench 16, and the number of the guide support seat 13 is the same as that of the fixed part 19. The guide seat 12 can be fixed on the guide support seat 13 through a fixing bolt. The guide hole slidably connected to the guide rod 23 is threadedly fixed between the two opposite guide seats 12, so that the fixed part 19 can be slidably connected on the guide rod 23. Further, under the action of the lifting electric cylinder 14 disclosed in the above embodiment, the fixed part 19 of the lifting and rotating beam 6 can move along the guide rod 23 with the lifting of the lifting electric cylinder 14, and the arrangement of the guide rod 23 and the guide seat 12 can effectively ensure the stable lifting of the lifting and rotating beam 6 in the vertical direction, avoid the deviation of lateral displacement and the like, and thus affect the subsequent test effect of the shock absorber.

[0046] In the specific implementation process, in order to ensure the test effect in the test process, the stability between the rotating part 20 and the fixed part 19 needs to be ensured, and the action of other structures is not affected during the lifting of the lifting and rotating beam 6. The application also discloses the following implementation: the fixed part 19 disclosed in the application is provided with a thrust cylinder 7, which can adopt a 30KG three-link cylinder, which is not limited in detail. The telescopic rod of the thrust cylinder 7 is connected with a beam locking device 5, which includes a Figure 9The wedge-shaped block 28 shown is slidably connected to the fixing part 19. Specifically, the middle position of the fixing part 19 can be set as a slope structure that matches the wedge-shaped block 28, allowing the wedge-shaped block 28 to slide within the fixing part 19 to form a whole (as shown in the attached figure). Figure 8 As shown in the diagram, both the wedge block 28 and the fixing part 19 are provided with through holes 27, and the through holes 27 of the two can form a bolt hole, so that the bolt passes through the bolt hole and locks the rotating part 20. Of course, the above is only an exemplary description and does not represent the only implementation of this application, and the specific details are not described here.

[0047] Of course, in the specific implementation process, please refer to the appendix. Figure 7 To be continued Figure 11 The structural views of the rotating part 20 and the fixed part 19 further illustrate the lifting and rotating beam 6 disclosed in this application. Referring to the accompanying drawings, the rotating part 20 disclosed in this application has an actuator mounting hole 17 and an actuator rod mounting hole 18 at its center. The actuator mounting hole 17 is larger than the actuator rod mounting hole 18, and the actuator mounting hole 17 and the actuator rod mounting hole 18 are connected. The actuator 1 is mounted in the actuator mounting hole 17, and the actuator rod mounting hole 18 is used to mount the test actuator rod 10. The free end of the test actuator rod 10 is hinged to one end of the vibration damper 11 under test, and the other end of the vibration damper 11 under test is hinged to the worktable 16. Through the hinge between the vibration damper 11 under test, the worktable 16, and the test actuator rod 10, the angular rotation of the actuator 1 can be effectively achieved during the rotation of the lifting and rotating beam 6, thereby achieving the effect of multi-angle testing of the vibration damper.

[0048] Furthermore, in the specific implementation process, both ends of the rotating part 20 are provided with support shaft mounting grooves 21, and the fixed part 19 opposite to the rotating part 20 is also provided with the same support shaft mounting grooves 21. The crossbeam rotating support shaft 4 is rotatably engaged in the corresponding two support shaft mounting grooves 21. Among them, the support shaft mounting grooves 21 may be provided with ball bearings, etc., that contact the crossbeam rotating support shaft 4, thereby effectively ensuring the rotational operation of the crossbeam rotating support shaft 4 in the two support shaft mounting grooves 21.

[0049] Of course, in actual implementation, the lifting electric cylinder and the thrust cylinder can be connected to the controller, and the operation of the lifting electric cylinder and the thrust cylinder can be controlled through the operation of the controller. Specific details will not be elaborated here.

[0050] In conjunction with the above embodiments, the rotating and lifting multifunctional experimental platform disclosed in this application can be assembled according to the above structure during operation, and the vibration damper 11 to be tested can be installed in the corresponding position. When multi-angle detection is required, the following implementation method can be adopted:

[0051] Firstly, the lifting and lowering of the lifting and rotating cross beam 6 can be realized by controlling the controller to control the action of the lifting electric cylinder 14, and the lifting and rotating cross beam 6 is guided to rise and fall under the guidance of the guide rod 23, when the lifting and rotating cross beam 6 rises and falls to the corresponding position, the control of the lifting electric cylinder 14 is stopped, and then the sliding rod can be rotated along the sliding groove 24 of the cross beam rotating support flange 3 by rotating the cross beam rotating flange 2, when it is rotated to a certain angle, the cross beam locking device 5 can be controlled to act to extend so as to realize the locking of the rotating part 20 and the fixed part 19, and avoid the deflection of the rotating part 20 under the vibration condition in the subsequent process of the actuator 1 testing the to-be-tested shock absorber 11, so as to affect the test effect and test efficiency under the corresponding angle. When the cross beam locking device 5 locks the lifting and rotating cross beam 6, the corresponding angle test of the to-be-tested shock absorber 11 can be realized by controlling the action of the actuator 1.

[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary lift multi-functional test bench for testing a shock absorber, characterized in that, The rotating lifting multifunctional test bed comprises a workbench (16), a lifting cylinder seat (15) is symmetrically arranged on the workbench (16), and the lifting cylinder seat (15) is fixedly connected with a lifting electric cylinder (14); The free end of the lifting electric cylinder (14) is fixedly connected with a lifting seat (8), and the opposite two lifting seats (8) are clamped and connected with a lifting rotating cross beam (6), the lifting rotating cross beam (6) is detachably installed with an actuator (1), the lifting rotating cross beam (6) comprises a rotating part (20) and a fixed part (19) fixedly connected with the lifting seat (8), wherein, The fixed part (19) and the rotating part (20) are limitedly connected with a cross beam rotating supporting shaft (4) at the corresponding positions, the cross beam rotating supporting shaft (4) is sleeved with a cross beam rotating flange (2) and a cross beam rotating supporting flange (3) on the outer periphery, the rotating part (20) is fixedly connected with the cross beam rotating flange (2), the fixed part (19) is fixedly connected with the cross beam rotating supporting flange (3), and the cross beam rotating supporting flange (3) is rotatably connected with the cross beam rotating flange (2).

2. The rotary lift multi-purpose test bench according to claim 1, wherein, The cross beam rotating flange (2) is provided with a sliding installation hole (22), the cross beam rotating supporting flange (3) is provided with a sliding groove (24) matched with the sliding installation hole (22), and the cross beam rotating supporting flange (3) is slidably matched with the sliding installation hole (22) through the sliding groove (24) penetrated by the bolt.

3. The rotary lift multi-purpose test bench according to claim 2, wherein, The sliding groove (24) has two, and the two sliding grooves (24) are arranged close to the position of the outer periphery of the cross beam rotating supporting flange (3).

4. The rotary lift multi-purpose test bench according to claim 2, wherein, The cross beam rotating flange (2) is provided with a threaded hole (25), the cross beam rotating flange (2) is provided with a bolt penetrating the threaded hole (25), and the bolt close to the cross beam rotating supporting flange (3) is provided with a rotation angle gear (9), and the rotation angle gear (9) is engaged with the cross beam rotating supporting flange (3).

5. The rotary lift multi-purpose test bench according to claim 3, wherein, The top and bottom of the workbench (16) are vertically provided with guide supporting seats (13), the guide supporting seats (13) are fixedly provided with guide seats (12), and the guide seats (12) are threadedly fixed with guide rods (23) between the two opposite guide seats (12), and the fixed part (19) is slidably connected with the guide rods (23).

6. The rotary lift multi-purpose test bench according to claim 1, wherein, The fixed part (19) is provided with a thrust cylinder (7), the telescopic rod of the thrust cylinder (7) is connected with a cross beam locking device (5), and the cross beam locking device (5) is used for locking the rotating part (20).

7. The rotary lift multi-purpose test bench according to claim 1, wherein The rotating part (20) is provided with an actuator installation hole (17) and an actuator rod installation hole (18) at the middle position, the actuator installation hole (17) and the actuator rod installation hole (18) are communicated, the actuator (1) is installed in the actuator installation hole (17), and the actuator rod installation hole (18) is used for installing a test actuator rod (10).

8. The rotary lift multi-purpose test bench according to claim 7, wherein, The free end of the test actuator rod (10) is hinged with one end of a to-be-tested shock absorber (11), and the other end of the to-be-tested shock absorber (11) is hinged with the workbench (16).

9. The rotary lift multi-purpose test bench according to claim 1, wherein Both ends of the rotating part (20) are provided with support shaft mounting grooves (21), and the fixed part (19) opposite to the rotating part (20) is also provided with the same support shaft mounting grooves (21), and the cross beam rotating support shaft (4) is rotatably clamped in the corresponding two support shaft mounting grooves (21).

10. The rotary lift multi-purpose test bench according to claim 6, wherein The cross beam locking device (5) comprises a wedge block (28) which is slidingly connected in the fixed part (19), and the wedge block (28) and the fixed part (19) are both provided with through holes (27), and the corresponding two through holes (27) are used to form a bolt hole.

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