Tool for testing swing durability of automobile bushing

Abstract

The utility model relates to the field of testing equipment, and discloses a swing durability tool for testing an automobile bushing, which comprises a connecting base, and a swing loading assembly and a bushing clamping assembly are arranged at the top end of the connecting base; the swing loading assembly and the lining clamping assembly are fixed to the connecting base through bolts and T-shaped nuts, a guide groove is formed in the upper surface of the connecting base, and the swing loading assembly and the lining clamping assembly are connected in a locked mode through bolts. The swing loading assembly comprises a swing actuator, a loading frame, a positioning block, a guide key, a torsion shaft, a torque sensor, a flange plate, a swing shaft, an inner sleeve and a tapered roller bearing. According to the utility model, by inputting different road spectrum information, the swing actuator can be adjusted to simulate the road condition to rotate, the test accuracy can be improved by simulating the actual working condition, and meanwhile, by adjusting the position of the swing loading assembly or the lining, the lining of different sizes can be measured.

Description

Technical Field

[0001] The utility model relates to the field of testing equipment, in particular to a swing durable tooling for testing automobile bushings. Background Art

[0002] The continuous development and advancement of automotive manufacturing technology has placed higher demands on vehicle handling stability and safety. Automotive bushings, as the "buffer components" of chassis components, effectively isolate and reduce wear and vibration between parts, preventing vibration from being transmitted to the cab, thereby contributing to improved vehicle stability and safety. The greater the durability of automotive bushings, the higher the vehicle's lifespan, stability, and safety. Therefore, it is crucial to test the durability of automotive bushings and design durable testing tooling that meets actual operating conditions.

[0003] After searching, Chinese patent publication number: CNCN107179187A discloses a durability test bench for automotive bushings, and Chinese patent publication number: CN106124173A discloses a bushing durability test device. Both can perform durability tests on automotive bushings, have high reliability, and low testing costs. However, the bushing sizes of different cars are inconsistent, which makes the versatility of the tooling poor and cannot simulate actual working conditions for testing. Therefore, there is an urgent need to find an automotive bushing durability test tool that can simulate actual working conditions, produce accurate test results, and has high versatility. To this end, a swing durability tool for testing automotive bushings is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a swing durability tool for testing automobile bushings, aiming to improve the problem in the prior art that "the existing bushing testing device has poor versatility when used and cannot simulate actual working conditions for testing."

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a swing durability tool for testing automobile bushings, comprising a connecting base, a top end of which is provided with a swing loading assembly and a bushing clamping assembly; the swing loading assembly and the bushing clamping assembly are fixed to the connecting base by bolts and T-nuts, the upper surface of the connecting base is provided with a guide groove, and the swing loading assembly and the bushing clamping assembly are locked and connected by bolts;

[0006] The swing loading assembly includes a swing actuator, a loading frame, a positioning block, a guide key, a torsion shaft, a torque sensor, a flange, a swing shaft, an inner sleeve, a tapered roller bearing, a clamping shaft, a bellows coupling, a Z2 expansion sleeve, a radial locking nut, an outer sleeve, and an end cover; the swing actuator and the guide key are fixed to the loading frame by bolts, and the positioning block is fixed to the swing actuator by bolts; the bellows coupling is fixed to the swing actuator by bolts, and the other end of the bellows coupling is connected to the torsion shaft by the expansion effect of the Z2 expansion sleeve; the left and right ends of the torque sensor are respectively connected and fixed to the torsion shaft and the flange by bolts, the flange is connected and fixed to the swing shaft by an expansion sleeve, and the swing shaft is bolted to the clamping shaft, the inner rings of the bearings between the two groups of tapered roller bearings are axially positioned by the inner sleeve, the radial locking nut and the shaft shoulder on the swing shaft, and the outer rings of the bearings between the two groups of tapered roller bearings are axially positioned by the outer sleeve, the end cover and the loading frame;

[0007] The connecting base is connected and fixed to the swing loading assembly by bolts and T-nuts;

[0008] The bushing clamping assembly includes a fixed shaft, a washer, a hexagonal fixing block, an automobile bushing, a steel sleeve, a support block, a hexagonal tightening block, and a locking nut. The fixed shaft passes through the washer, the hexagonal fixing block and the automobile bushing are fixed to the hexagonal tightening block through a threaded connection, the locking nut is fixed to the fixed shaft through a threaded connection, the automobile bushing is interference pressed into the steel sleeve of the test piece, the steel sleeve is fixed to the support block through a bolt connection, and the support block is fixed to the connecting base through bolts and T-nuts.

[0009] As a further description of the above technical solution:

[0010] The torsion shaft, torque sensor, flange, swing shaft and clamping shaft are all processed with stoppers for positioning.

[0011] As a further description of the above technical solution:

[0012] The interior of the clamping shaft is in a hexahedral shape.

[0013] As a further description of the above technical solution:

[0014] The guide groove at the top end of the connecting base includes two transverse T-shaped grooves, a longitudinal T-shaped groove and a guide key groove.

[0015] As a further description of the above technical solution:

[0016] The portions of the hexagonal fixing block and the hexagonal tightening block that are in contact with the automobile bushing are provided with dotted flat teeth.

[0017] As a further description of the above technical solution:

[0018] The hexagonal fixing block and the hexagonal tightening block have a hexahedral shape.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the present invention, by inputting different road spectrum information, the swing actuator can be adjusted to simulate road conditions and rotate. By simulating actual working conditions, the test accuracy can be improved. At the same time, by adjusting the position of the swing loading assembly or bushing, bushings of different sizes can be measured, which greatly improves the versatility of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0022] Figure 2 Schematic diagram of the cross section of the structure of the swing loading assembly in the present invention;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the bushing clamping assembly of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping shaft in the utility model;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the hexagonal fixing block in the utility model;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the hexagonal tightening block in the utility model.

[0027] Legend:

[0028] 1. Swing loading assembly; 11. Swing actuator; 12. Loading frame; 13. Positioning block; 14. Guide key; 15. Torsion shaft; 16. Torque sensor; 17. Flange; 18. Swing shaft; 19. Inner sleeve; 110. Tapered roller bearing; 111. Clamping shaft; 112. Bellows coupling; 113. Z2 expansion sleeve; 114. Radial locking nut; 115. Outer sleeve; 116. End cover; 2. Connecting base; 3. Bushing clamping assembly; 31. Fixed shaft; 32. Washer; 33. Hexagonal fixing block; 34. Automobile bushing; 35. Steel sleeve; 36. Support block; 37. Hexagonal tightening block; 38. Lock nut. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a swing durability tool for testing automobile bushings, comprising a connecting base 2 for supporting the entire device, a swing loading assembly 1 and a bushing clamping assembly 3 provided on the top of the connecting base 2; the swing loading assembly 1 and the bushing clamping assembly 3 are fixed to the connecting base 2 by bolts and T-nuts, and the positions of the swing loading assembly 1 and the bushing clamping assembly 3 on the upper surface of the connecting base 2 can be adjusted to adapt to different test conditions, and a guide groove for guiding the installation is provided on the upper surface of the connecting base 2, and the connecting base 2 can provide guidance and positioning for the swing loading assembly 1 through the guide groove, and the swing loading assembly 1 and the bushing clamping assembly 3 are locked and connected by bolts;

[0031] The swing loading assembly 1 includes a swing actuator 11, a loading frame 12, a positioning block 13, a guide key 14, a torsion shaft 15, a torque sensor 16, a flange 17, a swing shaft 18, an inner sleeve 19, a tapered roller bearing 110, a clamping shaft 111, a bellows coupling 112, a Z2 expansion sleeve 113, a radial locking nut 114, an outer sleeve 115, and an end cover 116; the swing actuator 11 and the guide key 14 are fixed to the loading frame 12 by bolts, and the positioning block 13 is fixed to the swing actuator 11 by bolts; the bellows coupling 112 is fixed to the swing actuator 11 by bolts, and the connection between the various components is achieved by using bolts, which can facilitate subsequent disassembly. The other end of the bellows coupling 112 is connected to the torsion shaft 15 by the expansion effect of the Z2 expansion sleeve 113; the left and right ends of the torque sensor 16 are respectively fixed to the torsion shaft 15 and the flange 17 by bolts. When the torque at the left and right ends of the torque sensor 16 changes, the torque sensor 16 can record the difference in torque between the left and right ends. The flange 17 is fixed to the swing shaft 18 by an expansion sleeve, and the swing shaft 18 is bolted to the clamping shaft 111. The inner rings of the two sets of tapered roller bearings 110 are axially positioned by the inner sleeve 19, the radial locking nut 114, and the shoulder on the swing shaft 18. The outer rings of the two sets of tapered roller bearings 110 are axially positioned by the outer sleeve 115, the end cover 116, and the loading frame 12. Through multiple positioning, the concentricity of the transmission of the entire device can be guaranteed.

[0032] The connecting base 2 is connected and fixed to the swing loading assembly 1 by bolts and T-nuts. The position of the connecting base 2 can be controlled by adjusting the position of the T-nuts and bolts.

[0033] The bushing clamping assembly 3 includes a fixed shaft 31, a washer 32, a hexagonal fixing block 33, an automobile bushing 34, a steel sleeve 35, a support block 36, a hexagonal tightening block 37, and a locking nut 38. The fixed shaft 31 passes through the washer 32, and the hexagonal fixing block 33 and the automobile bushing 34 are fixed to the hexagonal tightening block 37 by threaded connection. The locking nut 38 is fixed to the fixed shaft 31 by threaded connection. The automobile bushing 34 is interference pressed into the test piece steel sleeve 35. Since the automobile bushing 34 and the test piece steel sleeve 35 are interference fit, the two will not move relative to each other at will. The steel sleeve 35 is fixed to the support block 36 by bolts, and the support block 36 is fixed to the connecting base 2 by bolts and T-nuts. By tightening the bolts, the clamping shaft 111 can clamp the hexagonal fixing block 33.

[0034] Reference Figure 4 - Figure 6 The torsion shaft 15, torque sensor 16, flange 17, swing shaft 18, and clamping shaft 111 are all processed with stopper positioning. By processing the stopper positioning, the coaxiality of the swing shaft 18 can be effectively guaranteed. The interior of the clamping shaft 111 is hexahedral. When processing the clamping shaft 111, it is necessary to complete its outer shape first, and then cut it into two parts. The guide groove at the top of the connecting base 2 includes two transverse T-slots for guiding the movement of the swing loading assembly 1, a longitudinal T-slot for guiding the movement of the bushing clamping assembly 3, and a guide keyway.

[0035] Reference Figure 3 、 Figure 5 and Figure 6 The hexagonal fixing block 33 and the hexagonal tightening block 37 are made of 20CrMnTi with higher hardness. The parts of the hexagonal fixing block 33 and the hexagonal tightening block 37 that contact the automobile bushing 34 are provided with point-shaped flat teeth to increase friction. The point-shaped flat teeth of the hexagonal fixing block 33 and the hexagonal tightening block 37 help to clamp the automobile bushing 34. The clamping shaft 111 cooperates with the hexahedron of the hexagonal fixing block 33 to clamp, which can accurately transmit the swing to the automobile bushing 34. The hexagonal fixing block 33 and the hexagonal tightening block 37 are hexahedral in shape.

[0036] Working principle: When measuring, it is necessary to first press the automobile bushing 34 into the interior of the steel sleeve 35, and then use the fixed shaft 31 to pass through the washer 32, the hexagonal fixing block 33, the automobile bushing 34, and the hexagonal tightening block 37. Then, the locking nut 38 can be screwed to drive the hexagonal fixing block 33, the automobile bushing 34, and the hexagonal tightening block 37 to fit tightly, and then the steel sleeve 35 is fixed to the inner side of the support block 36 by bolts. In this way, the fixation of the automobile bushing 34 is completed, and then the hexagonal fixing block 33 can be inserted into the interior of the clamping shaft 111, and the clamping shaft 111 can be locked by bolts. In this way, the connection between the clamping shaft 111 and the hexagonal fixing block 33 can be completed. After that, the swing actuator 11 can be started to drive the overall swing loading assembly 1 to rotate, and the test can be carried out.

[0037] When it is necessary to test automobile bushings 34 of different sizes, the loading frame 12 can be unlocked by first screwing the bolts, and then the loading frame 12 can be moved laterally to change its horizontal position at the top of the connecting base 2. When it is adjusted to the appropriate position, the loading frame 12 can be re-fixed by screwing the bolts and cooperating with the T-nuts.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A swing durability tool for testing automobile bushings, comprising a connecting base (2), characterized in that: The top of the connecting base (2) is provided with a swing loading assembly (1) and a bushing clamping assembly (3); the swing loading assembly (1) and the bushing clamping assembly (3) are fixed to the connecting base (2) by bolts and T-nuts, and a guide groove is provided on the upper surface of the connecting base (2); the swing loading assembly (1) and the bushing clamping assembly (3) are locked and connected by bolts; The swing loading assembly (1) includes a swing actuator (11), a loading frame (12), a positioning block (13), a guide key (14), a torsion shaft (15), a torque sensor (16), a flange (17), a swing shaft (18), an inner sleeve (19), a tapered roller bearing (110), a clamping shaft (111), a bellows coupling (112), a Z2 expansion sleeve (113), a radial locking nut (114), an outer sleeve (115), and an end cover (116); the swing actuator (11) and the guide key (14) are fixed to the loading frame (12) by bolts, and the positioning block (13) is fixed to the swing actuator (11) by bolts; the bellows coupling (112) and the swing actuator (11) are fixed to each other by bolts. The other end of the bellows coupling (112) is connected to the torsion shaft (15) through the expansion action of the Z2 expansion sleeve (113); the left and right ends of the torque sensor (16) are respectively connected and fixed to the torsion shaft (15) and the flange (17) by bolts, the flange (17) and the swing shaft (18) are connected and fixed by the expansion sleeve, the swing shaft (18) and the clamping shaft (111) are bolted, the inner rings of the bearings between the two groups of the tapered roller bearings (110) are axially positioned by the inner sleeve (19), the radial locking nut (114) and the shaft shoulder on the swing shaft (18), and the outer rings of the bearings between the two groups of the tapered roller bearings (110) are axially positioned by the outer sleeve (115), the end cover (116) and the loading frame (12); The connecting base (2) is connected and fixed to the swing loading assembly (1) via bolts and T-nuts; The bushing clamping assembly (3) comprises a fixed shaft (31), a washer (32), a hexagonal fixed block (33), an automobile bushing (34), a steel sleeve (35), a support block (36), a hexagonal tightening block (37), and a locking nut (38), wherein the fixed shaft (31) passes through the washer (32), the hexagonal fixed block (33) and the automobile bushing (34) are fixed to the hexagonal tightening block (37) by threaded connection, the locking nut (38) is fixed to the fixed shaft (31) by threaded connection, the automobile bushing (34) is interference-pressed into the test piece steel sleeve (35), the steel sleeve (35) is fixed to the support block (36) by bolt connection, and the support block (36) is fixed to the connection base (2) by bolts and T-shaped nuts.

2. The swing durability tool for testing automobile bushings according to claim 1, characterized in that: The torsion shaft (15), torque sensor (16), flange (17), swing shaft (18), and clamping shaft (111) are all machined with stoppers for positioning.

3. The swing durability tool for testing automobile bushings according to claim 1, characterized in that: The interior of the clamping shaft (111) is in a hexahedral shape.

4. The swing durability tool for testing automobile bushings according to claim 1, characterized in that: The guide groove at the top end of the connecting base (2) comprises two transverse T-shaped grooves, a longitudinal T-shaped groove and a guide key groove.

5. The swing durability tool for testing automobile bushings according to claim 1, characterized in that: The portions of the hexagonal fixing block (33) and the hexagonal tightening block (37) that contact the automobile bushing (34) are provided with dot-shaped flat teeth.

6. The swing durability tool for testing automobile bushings according to claim 1, characterized in that: The hexagonal fixing block (33) and the hexagonal tightening block (37) have a hexahedral shape.

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