Automobile control arm assembly endurance test device with uniform and stable stress

Abstract

The utility model relates to the technical field of automobile part testing, in particular to an automobile control arm assembly endurance test device with uniform and stable stress, which comprises a bottom plate and a control arm, a moving groove is arranged on the bottom plate, moving blocks are symmetrically and slidably arranged in the moving groove through an adjusting assembly, supporting blocks are fixedly arranged on the moving blocks, and the supporting blocks are fixedly arranged on the control arm. A moving hole is formed in the supporting block, a moving rod is slidably installed in the moving hole, an impact block is fixedly installed at one end of the moving rod, and a driving assembly used for driving the moving rod to move in a reciprocating mode is arranged on the moving block. According to the utility model, through mutual cooperation of the driving assembly, the supporting block, the moving rod and the impact blocks, the impact blocks are driven to act on the rubber bushing of the control arm in a reciprocating manner, and the moving distances of the two impact blocks are the same in each moving process, so that the two ends of the rubber bushing are uniformly stressed, and the test accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component testing, in particular to an automobile control arm assembly durability testing device with uniform and stable force. Background Art

[0002] The automotive control arm assembly is a guiding and force-transmitting element in the vehicle's suspension system. It transmits the various forces acting on the wheels to the vehicle body, while ensuring that the wheels move along a certain trajectory. During installation, the control arm elastically connects the wheel and vehicle body through a ball joint and bushing. Therefore, the service life of the bushing determines the overall performance of the control arm. The automotive control arm assembly plays a vital role in the driving process of the vehicle. The quality of its performance directly affects the vehicle's handling, safety, and comfort. In order to ensure the quality and reliability of the automotive control arm assembly, it is necessary to conduct durability tests on it.

[0003] Chinese patent publication number CN206891718U discloses a durability test device for an automotive control arm assembly, comprising a frame, a test device mounted on the frame, and a circuit control device. The automotive control arm assembly comprises three control arms, each end of which is provided with a ball stud assembly, a rear rubber bushing assembly, and a front rubber bushing assembly. This utility model can accurately perform durability tests on control arms and accurately analyze the data, achieving mechanization and digitization of durability testing.

[0004] In the above patent document, two servo cylinders are used to continuously drive the two impact blocks to move, and the rear rubber bushing assembly is subjected to durability tests in turn. However, when the servo cylinders drive the two impact blocks to move separately, it is impossible to ensure that the two impact blocks move the same distance each time, which will cause uneven force on the two ends of the rubber bushing and affect the test results. Utility Model Content

[0005] The purpose of the utility model is to solve the following shortcomings in the prior art: it is impossible to ensure that the two impact blocks move the same distance each time, which will lead to uneven force on both ends of the rubber bushing and affect the test results. A durability test device for an automobile control arm assembly with uniform force and stability is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A uniformly stressed and stable automobile control arm assembly durability test device comprises a base plate and a control arm body. A clamping mechanism for clamping the control arm body is mounted on the base plate. A movable groove is formed on the base plate. Moving blocks are symmetrically slidably mounted in the movable groove via an adjustment assembly. Two moving blocks are located on either side of the control arm body.

[0008] A support block is fixedly installed on the moving block, a moving hole is horizontally opened on the support block, a moving rod is horizontally slidably installed in the moving hole, an impact block is fixedly installed on one end of the moving rod, the two impact blocks are located on both sides of the control arm body, and a driving component for driving the moving rod to move back and forth is provided on the moving block.

[0009] Preferably, the driving assembly includes a driving motor fixedly mounted on the moving block, a rotating disk fixedly mounted on the output shaft of the driving motor, and a transmission rod rotatably mounted on the end of the moving rod away from the impact block, and the end of the transmission rod away from the moving rod is rotatably connected to the upper surface of the rotating disk.

[0010] Preferably, the adjustment assembly includes a threaded rod and an adjustment block which are horizontally rotatably installed in the movable slot and have opposite thread directions at the left and right ends. One end of the threaded rod passes through the movable slot and is fixedly connected to the adjustment block.

[0011] Preferably, an oil filling hole connected to the movable hole is opened at the upper end of the support block, an oil filling pipe is fixedly installed in the oil filling hole, an oil storage tank is fixedly installed on the upper end of the oil filling pipe, the oil storage tank is filled with lubricating oil, and an oil filling assembly for filling oil into the movable hole is provided on the oil storage tank.

[0012] Preferably, the oil injection assembly includes a rectangular cylinder fixedly mounted on the side of the oil storage tank, a movable plate sealingly and slidingly mounted in the rectangular cylinder, an air intake pipe fixedly mounted on the rectangular cylinder, a push rod horizontally slidably mounted in the rectangular cylinder through an elastic component, and an L-shaped push rod fixedly mounted on the impact block. A one-way valve that only allows gas to enter the rectangular cylinder from the outside is installed in the air intake pipe. One end of the push rod is fixedly connected to the movable plate, and one end of the push rod is located on the moving path of the upper end of the L-shaped push rod.

[0013] Preferably, the elastic component includes a bracket fixedly mounted on one end of the rectangular tube and a telescopic spring sleeved on the push rod, the push rod is horizontally slidably mounted on the bracket, and both ends of the telescopic spring are fixedly connected to the bracket and the movable plate respectively.

[0014] In the utility model, the beneficial effects are:

[0015] 1. During the durability test of the control arm, the driving assembly, support block, moving rod and impact block work together to drive the impact block to act reciprocatingly on the rubber bushing of the control arm. The two impact blocks move the same distance each time, thereby ensuring uniform force on both ends of the rubber bushing and improving the accuracy of the test.

[0016] 2. When the moving rod moves back and forth on the support block, lubricating oil can be injected into the space between the moving rod and the moving hole through the cooperation of the oil injection assembly, the oil storage tank and the oil injection pipe, thereby reducing the friction between the moving rod and the moving hole and reducing the output power of the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a durable test device for a vehicle control arm assembly with uniform force and stability proposed by the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the moving block, supporting block, moving rod and transmission assembly;

[0019] Figure 3 It is a schematic diagram of a partial three-dimensional cross-section structure of the moving block, supporting block, moving rod and oil storage tank;

[0020] Figure 4 for Figure 3 A magnified view of the structure in the middle.

[0021] In the figure: 1 base plate, 2 control arm body, 3 moving block, 4 support block, 5 moving rod, 6 impact block, 7 drive motor, 8 rotating disk, 9 transmission rod, 10 threaded rod, 11 adjustment block, 12 oil filling pipe, 13 oil storage tank, 14 rectangular cylinder, 15 moving plate, 16 air intake pipe, 17 push rod, 18 L-shaped push rod, 19 bracket, 20 telescopic spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-Figure 4 A durability test device for an automobile control arm assembly with uniform force and stability includes a base plate 1 and a control arm body 2. A clamping mechanism for clamping the control arm body 2 is installed on the base plate 1 (the clamping mechanism is a main clamping device and a secondary clamping device disclosed in the Chinese patent publication number CN206891718U and the subject name is a durability test device for an automobile control arm assembly). A movable groove is opened on the base plate 1, and movable blocks 3 are symmetrically slidably installed in the movable groove through an adjustment component. The two movable blocks 3 are located on both sides of the control arm body 2. When the control arm body 2 is undergoing a durability test, the control arm body 2 is clamped and fixed on the base plate 1 by the clamping mechanism. At the same time, the control arm body 2 is located between the two movable blocks 3 and the distance between the two movable blocks 3 is the same.

[0024] A support block 4 is fixedly installed on the moving block 3, a moving hole is horizontally opened on the support block 4, a moving rod 5 is horizontally slidably installed in the moving hole, an impact block 6 is fixedly installed on one end of the moving rod 5, two impact blocks 6 are located on both sides of the control arm body 2, and a driving assembly for driving the moving rod 5 to move back and forth is provided on the moving block 3. The driving assembly includes a driving motor 7 fixedly installed on the moving block 3, a rotating disk 8 fixedly installed on the output shaft of the driving motor 7, and a transmission rod 9 rotatably installed on the end of the moving rod 5 away from the impact block 6, and the end of the transmission rod 9 away from the moving rod 5 is rotatably connected to the upper surface of the rotating disk 8.

[0025] The rotating disk 8 is fixedly mounted on the output shaft of the driving motor 7. At the same time, the rotating connection between the transmission rod 9 and the rotating disk 8 is not located on the axis of the rotating disk 8. Therefore, when the rotating disk 8 rotates, the moving rod 5 will be driven to move back and forth horizontally on the support block 4 through the transmission rod 9. The spacing of the movement of the moving rod 5 is the diameter of the circle formed by the rotation of the connection between the rotating disk 8 and the transmission rod 9. The two driving motors 7, the two rotating disks 8 and the two transmission rods 9 are all the same. Therefore, the moving distance of the two moving rods 5 is the same each time the two moving rods 5 make a reciprocating movement. Therefore, when the moving rod 5 drives the impact block 6 to act on the rubber bushing of the control arm body 2, the deformation amount of the rubber bushing squeezed by the two impact blocks 6 is the same, thereby ensuring that the force on both ends of the rubber bushing is uniform, thereby improving the accuracy of the test.

[0026] The adjustment component includes a threaded rod 10 and an adjustment block 11 with opposite thread directions at the left and right ends installed horizontally in the movable groove. One end of the threaded rod 10 passes through the movable groove and is fixedly connected to the adjustment block 11. The threaded rod 10 can be driven to rotate by rotating the adjustment block 11. Since the left and right ends of the threaded rod 10 have opposite thread directions, the two movable blocks 3 will be driven away from or closer to each other. The distance from the impact block 6 to the rubber bushing in the initial state can be adjusted, thereby changing the deformation amount of the rubber bushing squeezed by the impact block 6, simulating the effect on the control arm under different conditions, and further improving the accuracy of the test.

[0027] The upper end of the support block 4 is provided with an oil filling hole connected to the movable hole, an oil filling pipe 12 is fixedly installed in the oil filling hole, an oil storage tank 13 is fixedly installed on the upper end of the oil filling pipe 12, the oil storage tank 13 is filled with lubricating oil, and an oil filling assembly for filling oil into the movable hole is provided on the oil storage tank 13, the oil filling assembly includes a rectangular cylinder 14 fixedly mounted on the side of the oil storage tank 13, a movable plate 15 sealingly and slidingly mounted in the rectangular cylinder 14, an air inlet pipe 16 fixedly mounted on the rectangular cylinder 14, and a push rod 1 horizontally slidably mounted in the rectangular cylinder 14 through an elastic component. 7 and an L-shaped push rod 18 fixedly mounted on the impact block 6, a one-way valve is installed in the air inlet pipe 16, which only allows gas to enter the rectangular tube 14 from the outside, one end of the push rod 17 is fixedly connected to the movable plate 15, and one end of the push rod 17 is located on the moving path of the upper end of the L-shaped push rod 18. The elastic component includes a bracket 19 fixedly mounted on one end of the rectangular tube 14 and a telescopic spring 20 sleeved on the push rod 17. The push rod 17 is horizontally slidably mounted on the bracket 19, and the two ends of the telescopic spring 20 are respectively fixedly connected to the bracket 19 and the movable plate 15.

[0028] When the impact block 6 moves toward the support block 4, it will drive the L-shaped push rod 18 to move toward the push rod 17. When one end of the L-shaped push rod 18 contacts one end of the push rod 17, it will drive the push rod 17 to move into the rectangular tube 14, thereby driving the movable plate 15 to move into the oil storage tank 13. At the same time, the telescopic spring 20 is compressed. When the movable plate 15 moves toward the oil storage tank 13, the air in the rectangular tube 14 will be squeezed into the oil storage tank 13. As the air in the oil storage tank 13 increases, the lubricating oil in the oil storage tank 13 will enter the movable hole through the oil filling pipe 12, thereby reducing the friction between the movable rod 5 and the movable hole, and reducing the output power of the drive motor 7.

[0029] When the impact block 6 moves away from the support block 4 , the movable plate 15 moves away from the oil storage tank 13 under the action of the elastic force of the telescopic spring 20 . At this time, the outside air will enter the rectangular tube 14 through the air inlet pipe 16 .

[0030] In the present invention, the control arm body 2 is clamped and fixed on the base plate 1 by a clamping mechanism, and the distance between the two moving blocks 3 is the same. Then, the moving rod 5 is driven to move back and forth horizontally on the support block 4 by the transmission assembly. The two moving rods 5 move the same distance each time they make a reciprocating movement. Therefore, when the moving rod 5 drives the impact block 6 to act on the rubber bushing of the control arm body 2, the deformation amount of the rubber bushing squeezed by the two impact blocks 6 is the same, thereby ensuring that the two ends of the rubber bushing are subjected to uniform force, thereby improving the accuracy of the test.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vehicle control arm assembly durability test device with uniform and stable force, comprising a base plate (1) and a control arm body (2), characterized in that: A clamping mechanism for clamping the control arm body (2) is installed on the base plate (1), a movable groove is provided on the base plate (1), and a movable block (3) is symmetrically slidably installed in the movable groove through an adjustment component, and two movable blocks (3) are located on both sides of the control arm body (2); A support block (4) is fixedly mounted on the moving block (3), a moving hole is horizontally opened on the support block (4), a moving rod (5) is horizontally slidably mounted in the moving hole, an impact block (6) is fixedly mounted on one end of the moving rod (5), two impact blocks (6) are located on both sides of the control arm body (2), and a driving assembly for driving the moving rod (5) to move back and forth is provided on the moving block (3).

2. The uniformly stressed and stable automobile control arm assembly durability testing device according to claim 1 is characterized in that: The driving assembly comprises a driving motor (7) fixedly mounted on the moving block (3), a rotating disk (8) fixedly mounted on the output shaft of the driving motor (7), and a transmission rod (9) rotatably mounted on an end of the moving rod (5) away from the impact block (6), wherein the end of the transmission rod (9) away from the moving rod (5) is rotatably connected to the upper surface of the rotating disk (8).

3. The vehicle control arm assembly durability test device with uniform force and stability according to claim 1 is characterized in that: The adjustment assembly comprises a threaded rod (10) and an adjustment block (11) which are horizontally rotatably mounted in a movable groove and have left and right ends with opposite thread directions. One end of the threaded rod (10) passes through the movable groove and is fixedly connected to the adjustment block (11).

4. The vehicle control arm assembly durability test device with uniform force and stability according to claim 1, characterized in that: An oil filling hole connected to the movable hole is provided at the upper end of the support block (4); an oil filling pipe (12) is fixedly installed in the oil filling hole; an oil storage tank (13) is fixedly installed at the upper end of the oil filling pipe (12); the oil storage tank (13) is filled with lubricating oil; and an oil filling assembly for filling oil into the movable hole is provided on the oil storage tank (13).

5. The uniformly stressed and stable automobile control arm assembly durability testing device according to claim 4, characterized in that: The oil injection assembly comprises a rectangular cylinder (14) fixedly mounted on the side of the oil storage tank (13), a movable plate (15) sealingly and slidingly mounted in the rectangular cylinder (14), an air inlet pipe (16) fixedly mounted on the rectangular cylinder (14), a push rod (17) horizontally slidably mounted in the rectangular cylinder (14) via an elastic component, and an L-shaped push rod (18) fixedly mounted on the impact block (6). A one-way valve is installed in the air inlet pipe (16) for only allowing gas to enter the rectangular cylinder (14) from the outside. One end of the push rod (17) is fixedly connected to the movable plate (15), and one end of the push rod (17) is located on the moving path of the upper end of the L-shaped push rod (18).

6. The uniformly stressed and stable automobile control arm assembly durability testing device according to claim 5, characterized in that: The elastic component comprises a bracket (19) fixedly mounted on one end of the rectangular tube (14) and a telescopic spring (20) sleeved on the push rod (17); the push rod (17) is horizontally slidably mounted on the bracket (19); and the two ends of the telescopic spring (20) are fixedly connected to the bracket (19) and the movable plate (15) respectively.

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