An automatic testing device for shock absorbers

Abstract

The utility model relates to mechanical engineering field discloses an automatic testing equipment for shock absorber, including flat push hydraulic fixture, the right side outer wall fixed connection of flat push hydraulic fixture has detection equipment, detection equipment still includes shock absorber sample, adjusting screw, upper connecting plate, locking nut, adjustment square, guide connecting rod, V type block, connecting screw, guide rail, bearing gland, self -lubricating bearing, jacking rod connecting plate, jack, top head, lower connecting plate, the threaded connection mouth of flat push hydraulic fixture is fixed in the upper end of detection equipment through connecting screw, the eye structure of shock absorber sample is fixed through the conical top head of flat push hydraulic fixture, in the utility model, through adopting the structure that flat push hydraulic fixture cooperates with upper and lower connecting plate, flat push hydraulic fixture realizes both ends conical top head to load simultaneously through hydraulic drive and has the function of self -alignment adjustment, can fast and accurate clamping shock absorber sample.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, and in particular to an automatic testing device for shock absorbers. Background Technology

[0002] An automatic shock absorber testing device is an instrument used for the automated testing and evaluation of shock absorber performance. It can simulate various operating conditions of shock absorbers in actual use, accurately measure and analyze various performance indicators of the shock absorbers, and ensure the quality and reliability of the shock absorbers.

[0003] With the development of intelligent and electric vehicles, shock absorbers, as the core component of the suspension system, directly affect the vehicle's handling, safety, and comfort. Moreover, the penetration rate of new energy vehicles is rapidly increasing, leading to a continuous growth in demand for high-performance shock absorbers. Traditional shock absorber testing often relies on manual operation, requiring visual inspection or manual instrument measurement of multiple test points (such as spring disc lift, stabilizer bar bracket size, oil pipe assembly accuracy, etc.), which is inefficient and prone to misjudgment due to human error.

[0004] The automatic testing equipment for shock absorbers has the following drawbacks: in the existing testing process, the testing cycle of manual comprehensive inspection tools is long and cannot meet the requirements of high-precision and high-frequency assembly line production. Therefore, an automatic testing equipment for shock absorbers is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automatic testing device for shock absorbers, which aims to improve the problem that the testing cycle of manual comprehensive inspection tools in the existing testing process is long and cannot meet the requirements of high-precision and high-frequency assembly line production.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: An automatic testing device for shock absorbers includes a horizontal hydraulic clamp. A testing device is fixedly connected to the right outer wall of the horizontal hydraulic clamp. The testing device further includes a shock absorber sample, an adjusting screw, an upper connecting plate, a locking nut, an adjusting block, a guide connecting rod, a V-block, a connecting screw, a guide rail, a bearing cap, a self-lubricating bearing, a top rod connecting plate, a jack, a top head, and a lower connecting plate. The threaded connection port of the horizontal hydraulic clamp is fixed to the upper end of the testing device by the connecting screw. The eye structure of the shock absorber sample is fixed by the conical top head of the horizontal hydraulic clamp. The adjusting screw passes through the light hole of the upper connecting plate. The adjusting block is connected to the upper... The connecting plate is fixedly connected, and the upper and lower ends of the guide connecting rod are clamped and fixed to the upper connecting plate by locking nuts. The inclined surface of the V-block is tangent to the arc surface of the shock absorber sample. The connecting screws fix the V-block to the lower connecting plate. The outer cylindrical surface of the self-lubricating bearing is clearance-fitted with the inner hole of the lower connecting plate. The bearing cap is fixed to the lower connecting plate by connecting screws. The self-lubricating bearing is fixedly connected inside the lower connecting plate. The outer cylindrical surface of the guide connecting rod is transition-fitted with the inner surface of the self-lubricating bearing. The upper end face of the top rod connecting plate and the lower connecting plate are fixedly connected by screws. The jack is fixedly connected to the top rod connecting plate by screws. The jack is fixed to the upper surface of the guide rail plate by screws.

[0007] As a further description of the above technical solution: the flat-push hydraulic clamp is adapted to the centering adjustment of the conical tops at both ends through hydraulic transmission. The flat-push hydraulic clamp achieves simultaneous loading of the conical tops at both ends through hydraulic transmission, ensuring the accuracy of clamping. The conical tops have their own centering adjustment, and can also self-center and clamp when the loading is eccentric, so as to achieve rapid fixation of the shock absorber sample above.

[0008] As a further description of the above technical solution: the connecting hole of the top head and the fixing threaded hole of the lower connecting plate are squarely distributed, and the equipment can be rotated and installed by the cooperation of the top head and the lower connecting plate.

[0009] As a further description of the above technical solution: the connecting hole of the upper connecting plate is a strip hole, and the wedge-shaped surface of the adjusting block is tangent to the outer circular surface of the shock absorber sample. By adjusting the adjusting block in advance, the shock absorber sample can be adjusted once to achieve the installation and fixation of samples of the same specification.

[0010] As a further description of the above technical solution: a self-lubricating bearing is embedded inside the lower connecting plate. By setting the self-lubricating bearing, the up and down movement of the guide connecting rod is unobstructed, ensuring the accuracy of the up and down loading and the test precision.

[0011] As a further description of the above technical solution: the upper connecting plate and the lower connecting plate form a closed frame through the output of the hydraulic cylinder. By setting the upper connecting plate and the lower connecting plate to cooperate with each other, the eccentric load of the outer cylinder of the shock absorber can be absorbed, so that the outer cylinder of the shock absorber is pressed tightly inside the frame, which provides a guarantee for the smooth progress of the test.

[0012] As a further description of the above technical solution: the upper end of the guide connecting rod is a long thread, the middle end is a smooth cylindrical outer surface, and the lower end is a thread. The locking nut is fixedly connected to the outer wall of the upper surface of the guide rail. By adjusting the distance of the locking nut on the long thread, test loading of shock absorber outer cylinders of different lengths can be achieved.

[0013] This utility model has the following beneficial effects: 1. In this utility model, by adopting a structure in which a flat-push hydraulic clamp cooperates with upper and lower connecting plates, the flat-push hydraulic clamp realizes simultaneous loading of the two conical tops through hydraulic transmission and has a built-in centering adjustment function, which can quickly and accurately clamp the shock absorber sample. The connecting hole of the upper connecting plate is a strip hole, which, together with the wedge-shaped surface of the adjustment block, enables convenient installation and fixing of samples of the same specification. It realizes the ability to quickly adjust the testing position, adapt to different models of shock absorbers, and reduce equipment switching costs.

[0014] 2. In this utility model, the self-lubricating bearing embedded inside the lower connecting plate and the guide connecting rod are transitionally fitted to effectively reduce the friction force of its up and down movement, ensuring the accuracy of the up and down loading. The upper connecting plate and the lower connecting plate form a closed frame, which can withstand and absorb the off-center load of the shock absorber outer cylinder, so that the shock absorber outer cylinder is firmly pressed into the frame. At the same time, the self-centering clamping function of the horizontal push hydraulic clamp can ensure the clamping effect even if the loading is off-center. From the structural design, it provides a reliable guarantee for the high precision and stability of the test. Attached Figure Description

[0015] Figure 1 This is a schematic front view of an automatic testing device for shock absorbers proposed in this utility model. Figure 2 This is a top view schematic diagram of an automatic testing device for shock absorbers proposed in this utility model. Figure 3 This is a top view schematic diagram of an automatic testing device for shock absorbers proposed in this utility model. Figure 4 This is a side view schematic diagram of an automatic testing device for shock absorbers proposed in this utility model.

[0016] Legend: 1. Flat-push hydraulic clamp; 2. Shock absorber sample; 3. Adjusting screw; 4. Upper connecting plate; 5. Locking nut; 6. Adjusting block; 7. Guide connecting rod; 8. V-block; 9. Connecting screw; 10. Guide rail; 11. Bearing cover; 12. Self-lubricating bearing; 13. Top rod connecting plate; 14. Jack; 15. Top head; 16. Lower connecting plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1-3 This utility model provides an embodiment of an automatic testing device for shock absorbers, comprising a horizontal hydraulic clamp 1, with a testing device fixedly connected to the outer right side of the horizontal hydraulic clamp 1. The testing device also includes a shock absorber sample 2, an adjusting screw 3, an upper connecting plate 4, a locking nut 5, an adjusting block 6, a guide connecting rod 7, a V-block 8, a connecting screw 9, a guide rail 10, a bearing cap 11, a self-lubricating bearing 12, a top rod connecting plate 13, a jack 14, a top head 15, and a lower connecting plate 16. The threaded connection port of the horizontal hydraulic clamp 1 is fixed to the upper end of the testing device by the connecting screw 9. The eye structure of the shock absorber sample 2 is fixed by the conical top head of the horizontal hydraulic clamp 1. The adjusting screw 3 passes through the light hole of the upper connecting plate 4, and the adjusting block 6 is fixed to the upper connecting plate 4. The upper connecting plate 4 is clamped and fixed by locking nuts 5 at both ends of the guide connecting rod 7. The inclined surface of the V-block 8 is tangent to the arc surface of the shock absorber sample 2. The connecting screw 9 fixes the V-block 8 to the lower connecting plate 16. The outer cylindrical surface of the self-lubricating bearing 12 is clearance-fitted with the inner hole of the lower connecting plate 16. The bearing cap 11 is fixed to the lower connecting plate 16 by the connecting screw 9. The self-lubricating bearing 12 is fixedly connected inside the lower connecting plate 16. The outer cylindrical surface of the guide connecting rod 7 is transition-fitted with the inner surface of the self-lubricating bearing 12. The upper end face of the top rod connecting plate 13 and the lower connecting plate 16 are fixedly connected by screws. The jack 14 is fixedly connected to the top rod connecting plate 13 by screws. The jack 14 is fixed to the upper surface of the flat plate of the guide rail 10 by screws.

[0019] Reference Figures 2-4The connecting holes of the top head 15 and the fixing threaded holes of the lower connecting plate 16 are squarely distributed. The top head 15 and the lower connecting plate 16 can be rotated 90° to install the equipment. The connecting holes of the upper connecting plate 4 are strip-shaped holes. The wedge-shaped surface of the adjusting block 6 is tangent to the outer circular surface of the shock absorber sample 2. By adjusting the adjusting block 6 once, the shock absorber sample 2 can be adjusted to achieve the installation and fixation of samples of the same specification. The upper connecting plate 4 and the lower connecting plate 16 form a closed frame through the output of the hydraulic cylinder. By setting the upper connecting plate 4 and the lower connecting plate 16 to cooperate, the eccentric load of the outer cylinder of the shock absorber can be absorbed, so that the outer cylinder of the shock absorber is pressed tightly into the frame, which provides a guarantee for the smooth progress of the test.

[0020] Reference Figures 3-4 The flat-push hydraulic clamp 1 is adapted to the centering adjustment of the two conical tops through hydraulic transmission. The flat-push hydraulic clamp 1 achieves simultaneous loading of the two conical tops through hydraulic transmission, ensuring the accuracy of clamping. The conical tops have their own centering adjustment. When the loading is eccentric, they can also self-center and clamp through the top 15, realizing the rapid fixation of the upper part of the shock absorber sample 2. The lower connecting plate 16 has a self-lubricating bearing 12 embedded inside. By setting the self-lubricating bearing 12, the up and down movement of the guide connecting rod 7 is unobstructed, ensuring the accuracy of up and down loading and the test precision. The upper end of the guide connecting rod 7 is a long thread, the middle end is a smooth cylindrical outer surface, and the lower end is threaded. The locking nut 5 is fixedly connected to the outer wall of the upper surface of the guide rail 10. By adjusting the distance of the locking nut 5 on the long thread, the test loading of the outer cylinder of the shock absorber of different lengths can be realized.

[0021] Working principle: Connect the upper and lower parts of the testing fixture to the reserved interfaces of the main unit and connect the oil source. Clamp in the following order: First, fix the upper connecting plate 4 at a suitable distance, and then lift the jack 14 upward to transmit the force. The sample moves upward as a whole. The self-lubricating bearing 12 can effectively reduce the friction of the guide connecting rod 7. When the ejection stroke reaches the maximum, the shock absorber cylinder is clamped inside the frame structure. At this time, the flat push fixture is energized, and its conical top head clamps the shock absorber sample 2 in a self-centering manner. The entire equipment begins to conduct the test. After the test, switch the oil circuit, and the sample can be released instantly. Repeat the above work to realize the automated testing of the shock absorber sample 2 on the production line.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic testing device for shock absorbers, comprising a horizontal hydraulic clamp (1), characterized in that: The right outer wall of the horizontal hydraulic clamp (1) is fixedly connected to a testing device. The testing device also includes a shock absorber sample (2), an adjusting screw (3), an upper connecting plate (4), a locking nut (5), an adjusting block (6), a guide connecting rod (7), a V-block (8), a connecting screw (9), a guide rail (10), a bearing cap (11), a self-lubricating bearing (12), a top rod connecting plate (13), a jack (14), a top head (15), and a lower connecting plate (16). The threaded connection of the horizontal hydraulic clamp (1) is fixed to the upper end of the testing device by the connecting screw (9). The eye structure of the shock absorber sample (2) is fixed by the conical top head of the horizontal hydraulic clamp (1). The adjusting screw (3) passes through the light hole of the upper connecting plate (4). The adjusting block (6) is fixedly connected to the upper connecting plate (4). The upper and lower ends of the guide connecting rod (7) are respectively connected by... The locking nut (5) clamps and fixes the upper connecting plate (4). The inclined surface of the V-block (8) is tangent to the arc surface of the shock absorber sample (2). The connecting screw (9) fixes the V-block (8) on the lower connecting plate (16). The outer cylindrical surface of the self-lubricating bearing (12) is clearance-fitted with the inner hole of the lower connecting plate (16). The bearing cap (11) is fixed on the lower connecting plate (16) by the connecting screw (9). The self-lubricating bearing (12) is fixedly connected inside the lower connecting plate (16). The outer cylindrical surface of the guide connecting rod (7) is transition-fitted with the inner surface of the self-lubricating bearing (12). The upper end face of the top rod connecting plate (13) and the lower connecting plate (16) are fixedly connected by screws. The jack (14) is fixedly connected to the top rod connecting plate (13) by screws. The jack (14) is fixed on the upper surface of the flat plate of the guide rail (10) by screws.

2. The automatic testing device for shock absorbers according to claim 1, characterized in that: The flat-push hydraulic clamp (1) is adjusted and matched by the conical tops at both ends of the hydraulic transmission.

3. An automatic testing device for shock absorbers according to claim 1, characterized in that: The connecting holes of the top head (15) and the fixing threaded holes of the lower connecting plate (16) are arranged in a square shape.

4. An automatic testing device for shock absorbers according to claim 1, characterized in that: The connecting hole of the upper connecting plate (4) is a strip hole, and the wedge-shaped surface of the adjusting block (6) is tangent to the outer circular surface of the shock absorber sample (2).

5. An automatic testing device for shock absorbers according to claim 1, characterized in that: The lower connecting plate (16) has a self-lubricating bearing (12) embedded inside.

6. An automatic testing device for shock absorbers according to claim 1, characterized in that: The upper connecting plate (4) and the lower connecting plate (16) form a closed frame through the output of the hydraulic cylinder.

7. An automatic testing device for shock absorbers according to claim 1, characterized in that: The upper end of the guide connecting rod (7) is a long thread, the middle end is a smooth cylindrical outer surface, and the lower end is a thread. The locking nut (5) is fixedly connected to the outer wall of the upper surface of the guide rail (10).

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