Fatigue testing device for shock absorber

Abstract

The utility model discloses a shock absorber fatigue testing device. The shock absorber fatigue testing device comprises a base; the two guide rods are perpendicular to the base and are symmetrically arranged; the two ends of the reciprocating guide plate are arranged on the guide rods in a sliding and sleeving manner; a damper connecting double-lug is arranged in the middle of the reciprocating guide plate; the two ends of the fixed guide plate are fixedly mounted on the guide rods; the top beam is fixedly mounted at the top ends of the two guide rods; one end of the fixing clamp is fixedly mounted in the middle of the top beam, and a shock absorber clamp is arranged at the other end of the fixing clamp; one end of the displacement sensor is fixedly connected with the fixed guide plate, and the other end of the displacement sensor is fixedly connected with the reciprocating guide plate; the servo motor is arranged on the base and is connected with the reciprocating guide plate; and the slurry circulating mechanism comprises a slurry circulating pump, a water collecting tank, a slurry storage tank, a spraying pipe and a water return pipe and is used for simulating a severe environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shock absorber testing device technical field, especially related to a shock absorber fatigue testing device. BACKGROUND

[0002] As a key component in vehicles, machinery and other equipment, the performance of the shock absorber directly affects the stability and safety of the equipment. In the research and quality detection of the shock absorber, fatigue testing is an important link to evaluate its service life and reliability. However, the existing shock absorber fatigue testing device can only simulate the conventional working environment, and cannot effectively simulate the harsh and complex working conditions such as containing mud. In actual application, the shock absorber often needs to work in harsh environments full of mud, dust and other harsh environments. These environmental factors will accelerate the wear and performance degradation of the shock absorber. Due to the limitations of the existing testing device, the tested shock absorber is prone to premature damage and unstable performance when used in actual harsh environments, resulting in frequent equipment failures and increased maintenance costs. In addition, the existing technology cannot accurately monitor the dynamic parameters of the shock absorber in the simulated harsh environment, and cannot comprehensively evaluate its overall performance. SUMMARY

[0003] The utility model aims at providing a kind of shock absorber fatigue testing device, it can dynamically monitor shock absorber and simulate harsh environment, accurately evaluate the fatigue life and reliability of shock absorber.

[0004] The technical scheme provided by the utility model is as follows:

[0005] A kind of shock absorber fatigue testing device, comprising:

[0006] A base;

[0007] Two guide rods, which are symmetrically arranged perpendicular to the base;

[0008] A reciprocating guide plate, both ends of which are slidably sleeved on the guide rods; the reciprocating guide plate is provided with a shock absorber connecting double lug in the middle;

[0009] A fixed guide plate, both ends of which are fixedly installed on the guide rods;

[0010] A top beam, which is fixedly installed at the top end of the two guide rods;

[0011] A fixed clamp, one end of which is fixedly installed in the middle of the top beam, and the other end is provided with a shock absorber clamp;

[0012] A displacement sensor, one end of which is fixedly connected with the fixed guide plate, and the other end is fixedly connected with the reciprocating guide plate;

[0013] A servo motor, which is arranged on the base and connected with the reciprocating guide plate;

[0014] A mud circulating mechanism comprises:

[0015] A water collecting tank is arranged between the reciprocating guide plate and the fixed guide plate, and a central through hole is arranged on the lower bottom surface of the water collecting tank;

[0016] A mud circulating pump is arranged on the base and connected with the water collecting tank through a water pipe.

[0017] Preferably, linear bearings are arranged at both ends of the reciprocating guide plate, and the linear bearings are slidably sleeved on the guide rod.

[0018] Preferably, the mud circulating mechanism further comprises:

[0019] A motor connecting rod is hingedly connected with the reciprocating guide plate at one end;

[0020] A motor eccentric transmission rod is connected with the servo motor at one end and connected with the motor connecting rod at the other end.

[0021] Preferably, the mud circulating mechanism further comprises a water collecting tank fixing plate arranged between the reciprocating guide plate and the fixed guide plate, and both ends of the water collecting tank fixing plate are fixedly installed on the guide rod; and the water collecting tank is fixedly installed on the guide rod through the water collecting tank fixing plate.

[0022] Preferably, the mud circulating mechanism further comprises:

[0023] A mud storage tank is connected with the mud circulating pump;

[0024] A spraying pipe is connected with the mud storage tank at the water inlet end and arranged in the water collecting tank at the water outlet end;

[0025] A backwater pipe is connected with the water collecting tank at the water inlet end and connected with the mud storage tank at the water outlet end.

[0026] Preferably, a shock absorber mounting groove is arranged in the middle of the fixed guide plate.

[0027] Preferably, a displacement sensor mounting groove is arranged on the left side of the water collecting tank fixing plate close to the guide rod.

[0028] Preferably, a rubber ring is arranged on the inner wall of the central through hole of the water collecting tank.

[0029] The shock absorber fatigue test device has the advantages of simple structure, accurate dynamic monitoring of the shock absorber and simulation of severe environment, accurate evaluation of the fatigue life and reliability of the shock absorber, and improvement of the authenticity and effectiveness of the test results. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1This is a front view structural diagram of the shock absorber fatigue testing device described in this utility model.

[0031] Fig. 2 This is a side view of the fatigue testing device for the shock absorber described in this utility model.

[0032] Fig. 3 This is a rear view structural diagram of the shock absorber fatigue testing device described in this utility model.

[0033] Reference numerals: Base 110; Guide rod 120; Reciprocating guide plate 130; Linear bearing 131; Shock absorber connecting lugs 132; Motor connecting rod connecting lugs 133; Fixed guide plate 140; Shock absorber mounting slot 141; Top beam 150; Fixed clamp 160; Shock absorber clamp 161; Water collection tank fixing plate 170; Displacement sensor mounting slot 171; Displacement sensor 210; Servo motor 310; Motor eccentric transmission rod 320; Motor connecting rod 330; Water collection tank 410; Central through hole 411; Return water port 412; Mud circulation pump 420; Mud storage tank 430; Spray pipe 440; Return water pipe 450; Shock absorber 510. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0035] like Figs. 1-3The utility model provides a kind of shock absorber fatigue testing device, it includes: shock absorber support frame, it is gantry structure;The shock absorber support frame includes: pedestal 110;Two guide rods 120, it is symmetrically arranged perpendicular to the pedestal 110;Reciprocating guide plate 130, its both ends are equipped with linear bearing 131, the linear bearing 131 is slidably set on the guide rod 120, so that the reciprocating guide plate 130 can move along the axial direction of the guide rod 120;Reciprocating guide plate 130 middle upper surface is equipped with shock absorber connecting double ears 132, lower surface is equipped with motor connecting rod connecting double ears 133;Fixed guide plate 140, its both ends are adjustably fixed on the guide rod 120;The fixed guide plate 140 middle is equipped with shock absorber mounting groove 141, prevent shock absorber 510 from deviating during up-down movement;The fixed guide plate 140 can be set fixed position according to the size of shock absorber 510 and actual test demand;Water collecting tank fixing plate 170, it is arranged between the reciprocating guide plate 130 and the fixed guide plate 140, the water collecting tank fixing plate 170 both ends are fixedly installed on the guide rod 120;Water collecting tank fixing plate 170 middle is equipped with water collecting tank mounting through-hole, left side is equipped with displacement sensor mounting groove 171 close to the position of the guide rod 120, auxiliary fixed displacement sensor 210;Wherein, the reciprocating guide plate 130, the fixed guide plate 140 and the water collecting tank fixing plate 170 are all horizontally arranged;The shock absorber mounting groove 141 and the displacement sensor mounting groove 171 are all open to the front U-shaped groove;Top beam 150, it is fixedly installed on the top end of the two guide rods 120;Fixed clamp 160, one end is fixedly installed in the middle of the top beam 150, and the other end is equipped with shock absorber clamp 161;The shock absorber clamp 161 cooperates with the shock absorber connecting double ears 132, and shock absorber 510 is installed on the shock absorber support frame.

[0036] One end of the displacement sensor 210 is fixedly connected with the fixed guide plate 140, the other end is fixedly connected with the reciprocating guide plate 130, and the middle is clamped into the displacement sensor mounting groove 171;The displacement sensor 210 can accurately capture the position change of shock absorber 510 in reciprocating motion, real-time acquisition shock absorber 510 displacement data, provides key data support for evaluating the performance stability of shock absorber 510.

[0037] Power mechanism, it includes: servo motor 310, it is arranged on the pedestal 110;Motor connecting rod 330, one end is hinged with the motor connecting rod connecting double ears 133 of the reciprocating guide plate 130 through pin shaft;Motor eccentric transmission rod 320, one end is connected with the servo motor 310, and the other end is rotatably connected with the motor connecting rod 330;The motor eccentric transmission rod 320 converts the rotary power output by the servo motor 310 into vertical up-down power, so as to push the reciprocating guide plate 130 to reciprocate up and down along the guide rod 120.

[0038] The mud circulating mechanism comprises: a water collecting tank 410 arranged in the water collecting tank mounting through hole of the water collecting tank fixing plate 170, the water collecting tank 410 is fixedly mounted on the shock absorber support frame through the water collecting tank fixing plate 170; a center through hole 411 is arranged in the middle of the lower bottom surface of the water collecting tank 410, and a backwater opening 412 is arranged at the position close to the edge; a rubber ring is arranged on the inner wall of the center through hole 411, so that the rubber ring is in contact with the outer surface of the shock absorber 510, mud is prevented from flowing out of the center through hole 411, and the test result and the service life of the test device are affected; a mud circulating pump 420 is arranged on the base 110; a mud storage tank 430 is connected with the mud circulating pump 420; a spraying pipe 440 is connected with the mud storage tank 430 at the water inlet end and is arranged in the water collecting tank 410 at the water outlet end, mud is sprayed on the shock absorber 510, and the harsh environment during vehicle driving is simulated; a backwater pipe 450 is connected with the backwater opening 412 at the water inlet end and is connected with the mud storage tank 430 at the water outlet end; mud in the water collecting tank 410 is recovered into the mud storage tank 430, mud is recycled, and resource waste is reduced.

[0039] The working process of the shock absorber fatigue test device is as follows: the shock absorber clamp 161 clamps the piston end of the to-be-tested shock absorber 510, the cylinder body end of the to-be-tested shock absorber 510 is hinged to the shock absorber connecting double ears 132 through a pin shaft, the middle part of the to-be-tested shock absorber 510 is clamped into the shock absorber mounting groove 141 and arranged in the center through hole 411, so that the to-be-tested shock absorber 510 is fixed in the shock absorber support frame; the mud circulating pump 420 is started, mud is circulated in the mud storage tank 430, the spraying pipe 440 and the backwater pipe 450, mud is uniformly sprayed on the to-be-tested shock absorber 510, and a mud environment is simulated; the servo motor 310 is started, and the servo motor 310 drives the reciprocating guide plate 130 to reciprocate up and down according to the pre-set test parameters, such as vibration frequency, amplitude, test duration or cycle number, so as to simulate the stress state in actual work; the displacement sensor 210 records the displacement change of the to-be-tested shock absorber 510 in real time, and synchronously records related data, such as the displacement curve of the shock absorber, the stress change, the temperature and the like; when the set test number or time is reached, the servo motor 310 is stopped first, and then the mud circulating pump 420 is turned off. The appearance of the shock absorber 510 is inspected and the performance of the shock absorber 510 is detected, whether the shock absorber 510 is abraded, corroded, leaked, whether the shock absorbing effect of the shock absorber 510 is reduced, whether the internal structure of the shock absorber 510 is damaged and the like are detected, the fatigue performance of the to-be-tested shock absorber 510 in the simulated harsh environment is comprehensively evaluated in combination with the whole displacement data recorded by the displacement sensor 210.

[0040] The shock absorber fatigue test device is compact and simple in structure, can effectively simulate a harsh mud environment in actual use of the shock absorber through the mud circulating mechanism, and makes fatigue test closer to real working conditions; meanwhile, the introduction of the displacement sensor can accurately measure displacement change of the shock absorber in the test process, and provides more comprehensive and accurate data support for evaluating the performance; the shock absorber fatigue test device can accurately evaluate fatigue life and reliability of the shock absorber, improves authenticity and effectiveness of test results, and further improves product quality and reduces failure occurrence rate in actual use, and has practicability and industrial application value.

[0041] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A shock absorber fatigue testing device characterized by comprising: It comprises: a base; two guide rods symmetrically arranged perpendicularly to the base; a reciprocating guide plate, the two ends of which are slidingly sleeved on the guide rods, and the middle part of which is provided with a shock absorber connecting double ear; a fixed guide plate, the two ends of which are fixedly installed on the guide rods; a top beam, which is fixedly installed on the top ends of the two guide rods; a fixed clamp, one end of which is fixedly installed on the middle part of the top beam, and the other end of which is provided with a shock absorber clamp; a displacement sensor, one end of which is fixedly connected with the fixed guide plate, and the other end of which is fixedly connected with the reciprocating guide plate; a servo motor, which is arranged on the base and connected with the reciprocating guide plate; a mud circulating mechanism, which comprises: a water collecting tank, which is arranged between the reciprocating guide plate and the fixed guide plate, and is provided with a central through hole on the lower bottom surface; a mud circulating pump, which is arranged on the base and connected with the water collecting tank through a water pipe.

2. The shock absorber fatigue testing device according to claim 1, characterized by The reciprocating guide plate is provided with a linear bearing at each end, and the linear bearing is slidingly sleeved on the guide rod.

3. The shock absorber fatigue testing device of claim 1, wherein It further comprises: a motor connecting rod, one end of which is hingedly connected with the reciprocating guide plate; a motor eccentric transmission rod, one end of which is connected with the servo motor, and the other end of which is connected with the motor connecting rod.

4. The shock absorber fatigue testing device of claim 1, wherein It further comprises: a water collecting tank fixing plate, which is arranged between the reciprocating guide plate and the fixed guide plate, and is fixedly installed on the guide rods at both ends; the water collecting tank is fixedly installed on the guide rods through the water collecting tank fixing plate.

5. The shock absorber fatigue testing device of claim 1, wherein, The mud circulating mechanism further comprises: a mud storage tank, which is connected with the mud circulating pump; a spray pipe, the water inlet end of which is connected with the mud storage tank, and the water outlet end of which is arranged in the water collecting tank; a backwater pipe, the water inlet end of which is connected with the water collecting tank, and the water outlet end of which is connected with the mud storage tank.

6. The shock absorber fatigue testing device of claim 1, wherein, The middle part of the fixed guide plate is provided with a shock absorber mounting groove.

7. The shock absorber fatigue testing device of claim 4, wherein, The left side of the water collecting tank fixing plate close to the guide rod is provided with a displacement sensor mounting groove.

8. The shock absorber fatigue testing device of claim 1, wherein, The inner wall of the central through hole of the water collecting tank is provided with a rubber ring.

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