A device for testing the strength of a car suspension bushing

Abstract

The utility model belongs to the technical field of automobile connecting piece, concretely relates to a kind of automobile suspension bushing strength testing device, including support platform, the support platform top surface is fixedly connected with mounting bracket, the mounting bracket is U-shaped, the inside of mounting bracket is provided with mould, the mould top surface is equipped with connecting piece, the inside of mould is provided with bushing main body, the bolt is assembled between the bushing main body and mounting bracket, the side wall of mounting bracket is respectively clamped with support plate, the support plate is U-shaped, the inside of support plate is rotatably connected with mounting plate, the side wall of mounting plate is provided with waist hole, the utility model is sprayed clean water or mud water to bushing surface in the process of carrying out tensile test, it is convenient for stain to infiltrate inside bushing, for simulating the sewage splashed in the process of vehicle driving, under this kind of test environment, the result tested is more accurate.

Description

Technical Field

[0001] This utility model belongs to the field of automotive connector technology, specifically relating to an automotive suspension bushing strength testing device. Background Technology

[0002] During long-term use, automotive bushings are subject to vibrations from the vehicle body and frame, which can easily lead to aging or damage. Therefore, after production, bushings need to undergo strength testing to determine their lifespan during vehicle operation.

[0003] Existing strength testing methods generally test the number of bends and time of the bushing through cyclic tensile testing to determine its service life; however, this is not convenient for simulating the effects of rain, dust and other impurities encountered during vehicle operation, and the results of simple tensile testing have a large deviation from those in actual use.

[0004] Therefore, an automotive suspension bushing strength testing device was designed to overcome the aforementioned technical defects. Utility Model Content

[0005] (1) Technical problems to be solved In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automotive suspension bushing strength testing device. This testing device aims to solve the technical problem that the test results of simple tensile tests under the existing technology have a large deviation from those in actual use.

[0006] (2) Technical solution To address the aforementioned technical problems, this utility model provides an automotive suspension bushing strength testing device, comprising a support platform, a mounting frame fixedly connected to the top surface of the support platform, the mounting frame being U-shaped, a mold disposed inside the mounting frame, a connector mounted on the top surface of the mold, a bushing body disposed inside the mold, bolts being fitted between the bushing body and the mounting frame, support plates respectively snapped onto the side walls of the mounting frame, the support plates being U-shaped, an mounting plate rotatably connected to the inner side of the support plates, and a waist hole provided on the side wall of the mounting plate, within which a spray assembly is disposed.

[0007] Furthermore, the spray assembly includes a metal tube disposed within the waist hole, one end of which is fixedly connected to a nozzle, and the sidewalls of the metal tube are threadedly connected to fixing nuts on both sides of the mounting plate. The sidewalls of the mounting frame are provided with a circulation guide assembly.

[0008] Furthermore, the circulation guide assembly includes a water pump fixedly connected to the side wall of the mounting frame, a hose fixedly connected to the water outlet end of the water pump, the other end of the hose fixedly connected to a metal pipe, an annular water trough opened on the top surface of the support platform, a drainage hole opened on the bottom surface of the annular water trough, and the water inlet end of the water pump communicating with the drainage hole.

[0009] Furthermore, a groove is provided on the bottom surface of the annular water tank at the drainage hole, and a filter screen is installed in the groove.

[0010] Furthermore, the mounting bracket has a slot on its side wall, and a locking block is engaged in the slot. The locking block is fixedly connected to the support plate, and both the locking block and the slot are T-shaped structures.

[0011] Furthermore, the mounting plate is fixedly connected to the upper and lower side walls with round shafts, the round shafts pass through the support plate and are rotatably connected to it, and the side walls of the round shafts are threaded with locking nuts.

[0012] (3) Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This invention simulates the splashing of sewage during vehicle operation by spraying clean water or muddy water onto the bushing surface during tensile testing, allowing stains to penetrate into the inner side of the bushing. Under this testing environment, the test results are more accurate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This utility model Figure 3 A schematic diagram of the split structure.

[0014] The labels in the attached diagram are as follows: 1. Support platform; 2. Mounting bracket; 3. Mold; 4. Connector; 5. Bushing body; 6. Bolt; 7. Slot; 8. Locking block; 9. Support plate; 10. Mounting plate; 11. Waist hole; 12. Round shaft; 13. Locking nut; 14. Metal pipe; 15. Nozzle; 16. Fixing nut; 17. Water pump; 18. Hose; 19. Annular water tank; 20. Drainage hole; 21. Filter screen. Detailed Implementation

[0015] This specific embodiment is an automotive suspension bushing strength testing device, the structural schematic diagram of which is shown below. Figures 1-4As shown, the system includes a support platform 1, a mounting frame 2 fixedly connected to the top surface of the support platform 1, the mounting frame 2 being U-shaped, a mold 3 being provided inside the mounting frame 2, a connector 4 being assembled on the top surface of the mold 3, a bushing body 5 being provided inside the mold 3, and bolts 6 being assembled between the bushing body 5 and the mounting frame 2. The above structures are all existing technical solutions. Support plates 9 are respectively snapped onto the side walls of the mounting frame 2, the support plates 9 being U-shaped, and a mounting plate 10 being rotatably connected to the inside of the support plates 9. A waist hole 11 is opened on the side wall of the mounting plate 10, and a spray assembly is provided in the waist hole 11.

[0016] The top of the connector 4 can be connected to equipment to support the mold 3, and the top of the support platform 1 is connected to the test drive facility to drive the support platform 1 to swing up and down to simulate the bumpy displacement action when the vehicle is driving. This part belongs to the existing facility structure and will not be shown in this solution.

[0017] The focus of this plan is: such as Figure 3 and Figure 4 As shown, the spray assembly includes a metal pipe 14 disposed in the waist hole 11, a nozzle 15 fixedly connected to one end of the metal pipe 14, and fixing nuts 16 threadedly connected to the side walls of the metal pipe 14 on both sides of the mounting plate 10. A circulation guide assembly is provided on the side wall of the mounting bracket 2.

[0018] The metal tube 14 has external threads on its surface. The fixing nut 16 abuts against the mounting plate 10 to fix the metal tube 14. The metal tube 14 can be adjusted in height within the waist hole 11, allowing spraying to be applied to different parts of the bushing body 5.

[0019] like Figure 1 and Figure 3 As shown, the circulation guide assembly includes a water pump 17 fixedly connected to the side wall of the mounting frame 2, a hose 18 fixedly connected to the water outlet end of the water pump 17, and the other end of the hose 18 fixedly connected to the metal pipe 14. An annular water trough 19 is provided on the top surface of the support platform 1, and a drainage hole 20 is provided on the bottom surface of the annular water trough 19. The water inlet end of the water pump 17 is connected to the drainage hole 20.

[0020] In this scheme, the water sprayed for testing can be clean water, sewage, etc. By changing different liquids, the driving of vehicles under different road conditions can be simulated.

[0021] In addition, the outlet of the water pump 17 is connected to a multi-way valve, so one water pump 17 can supply water to multiple pipelines.

[0022] In a further embodiment, a valve is installed on the side wall of the metal pipe 14 or the hose 18 to control the water flow pressure and prevent excessive pressure from causing splashing.

[0023] The bottom surface of the annular water tank 19 has a groove at the drainage hole 20, and a filter screen 21 is installed in the groove. The filter screen 21 is used to filter large particulate impurities in the sewage to prevent large particulate impurities from clogging the water pump 17.

[0024] like Figure 1 As shown, the mounting bracket 2 has a slot 7 on its side wall, and a block 8 is engaged in the slot 7. The block 8 is fixedly connected to the support plate 9. Both the block 8 and the slot 7 are T-shaped structures.

[0025] In a further embodiment, the slot 7 is opened on the left and right side walls of the mounting bracket 2 near both ends. During testing, the number and position of the nozzles 15 can be flexibly increased or decreased as needed, so that the nozzles 15 can meet the spraying conditions in different directions.

[0026] To improve the flexibility of spraying, such as Figure 3 and Figure 4 As shown, the upper and lower side walls of the mounting plate 10 are respectively fixedly connected to a round shaft 12, the round shaft 12 passes through the support plate 9 and is rotatably connected to it, and the side walls of the round shaft 12 are threaded with a locking nut 13.

[0027] The angle of the mounting plate 10 can be adjusted by tightening or loosening the locking nut 13, so that the mounting plate 10 can drive the nozzle 15 to different angles, thereby increasing the diversity of testing.

[0028] Working principle: First, the main body 5 of the bushing to be tested is placed in the mold 3 and fixed to the mounting frame 2 by bolts 6. Then, the mold 3 is supported and fixed by adjusting the connecting piece 4. The lower side of the support platform 1 is the tensile test drive facility. When the test starts, the drive facility is started to drive the mounting frame 2 to swing up and down to simulate the shaking displacement of the vehicle body and frame when they are moving. At the same time, clean water or sewage is poured into the annular water tank 19, and the water pump 17 is started to draw the water out of the annular water tank 19 into the hose 18 and spray it from the nozzle 15 onto the surface of the bushing body 5 to simulate the environmental conditions when the vehicle is driving through water. This environmental simulation test method makes the test data more accurate.

[0029] All technical features in this embodiment can be freely combined according to actual needs.

[0030] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A test device for the strength of automotive suspension bushings, comprising a support platform, a mounting frame fixedly connected to the top surface of the support platform, the mounting frame being U-shaped, a mold disposed inside the mounting frame, a connector mounted on the top surface of the mold, a bushing body disposed inside the mold, and bolts mounted between the bushing body and the mounting frame, characterized in that: The mounting bracket has a support plate snapped onto its side wall. The support plate is U-shaped and has a mounting plate rotatably connected to its inner side. The mounting plate has a waist hole on its side wall and a spray assembly is installed in the waist hole.

2. The automotive suspension bushing strength testing device according to claim 1, characterized in that: The spray assembly includes a metal tube installed in the waist hole, with a nozzle fixedly connected to one end of the metal tube, and fixing nuts threadedly connected to the sidewalls of the metal tube on both sides of the mounting plate. A circulation guide assembly is provided on the sidewall of the mounting frame.

3. The automotive suspension bushing strength testing device according to claim 2, characterized in that: The circulation guide assembly includes a water pump fixedly connected to the side wall of the mounting frame. A hose is fixedly connected to the water outlet end of the water pump, and the other end of the hose is fixedly connected to a metal pipe. An annular water trough is provided on the top surface of the support platform, and a drainage hole is provided on the bottom surface of the annular water trough. The water inlet end of the water pump is connected to the drainage hole.

4. The automotive suspension bushing strength testing device according to claim 3, characterized in that: The bottom surface of the annular water tank has a groove at the drainage hole, and a filter screen is installed in the groove.

5. The automotive suspension bushing strength testing device according to claim 1, characterized in that: The mounting bracket has a slot on its side wall, and a locking block is engaged in the slot. The locking block is fixedly connected to the support plate. Both the locking block and the slot are T-shaped structures.

6. The automotive suspension bushing strength testing device according to claim 1, characterized in that: The mounting plate is fixedly connected to the upper and lower side walls with round shafts, which pass through the support plate and are rotatably connected to it. The side walls of the round shafts are threaded with locking nuts.

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