Wire harness durability test equipment

Abstract

The utility model discloses wire harness durability test equipment, which comprises a bottom plate, the stretching assembly comprises a fixed plate and a movable plate which are symmetrically arranged at the top of the bottom plate, the tops of the fixed plate and the movable plate are provided with a plurality of fixing parts at equal intervals in the length direction, the fixing parts are used for fixing the wire harnesses, the wire harnesses are arranged between the fixed plate and the movable plate in parallel, and the movable plate can reciprocate in the width direction of the movable plate; the stretching device is used for stretching wire harnesses; the bending assembly comprises a sliding plate arranged between the fixed plate and the movable plate, the top of the sliding plate is provided with a plurality of clamping pieces used for clamping the wire harness in the length direction of the sliding plate at equal intervals, and the sliding plate can slide in a reciprocating mode in the length direction of the sliding plate and is used for bending the wire harness; the distance between every two adjacent fixing pieces is equal to the distance between every two clamping pieces. According to the utility model, the durability of a long wire harness can be conveniently tested.

Description

Technical Field

[0001] The utility model relates to the technical field of wire harness testing, in particular to a wire harness durability testing device. Background Art

[0002] A wire harness refers to a component formed by crimping contact terminals (connectors) made of copper material onto electric wires and cables, and then molding an insulator outside or adding a metal shell, etc., and bundling the wire harness to form a connecting circuit. In daily life, wire harnesses are widely used. Therefore, the durability of wire harnesses is crucial. After the production of wire harnesses, it is necessary to use testing equipment to repeatedly pull and bend them multiple times to simulate their usage status and test their durability.

[0003] In the existing wire harness durability testing devices, the two ends of the wire harness are often clamped and fixed. One end of the wire harness is clamped and fixed on the workbench, and the other end is clamped and then moved under the drive of the drive component. During the movement, the wire harness twists to test the durability of the wire harness. However, when this device tests the wire harness, it is necessary to clamp the two ends of the wire harness, so it can only test wire harnesses with shorter lengths and is not convenient to test the overall synchronization of wire harnesses with longer lengths. Summary of the Utility Model

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide a wire harness durability testing device that is convenient for testing the durability of longer wire harnesses.

[0005] A wire harness durability testing device provided by the utility model includes:

[0006] A bottom plate;

[0007] A stretching component, including a fixed plate and a moving plate symmetrically arranged on the top of the bottom plate. A plurality of fixing members are evenly spaced along the length direction on the tops of the fixed plate and the moving plate. The fixing members are used to fix the wire harnesses so that the wire harnesses are arranged side by side and parallel between the fixed plate and the moving plate. The moving plate can reciprocate along its width direction for stretching the wire harnesses.

[0008] A bending component, including a sliding plate arranged between the fixed plate and the moving plate. The sliding plate is arranged side by side and parallel to the fixed plate. A plurality of clamping members for clamping the wire harnesses are evenly spaced along the length direction on the top of the sliding plate. The sliding plate can reciprocate along its length direction for bending the wire harnesses.

[0009] Wherein, the distance between adjacent two of the fixing members is equal to the distance between adjacent two of the clamping members.

[0010] Further, two first chutes are opened on the top of the bottom plate, and a driving member for driving the moving plate to move is arranged in the first chutes.

[0011] Further, the driving member includes a first screw rod, a slider, a synchronous pulley and a synchronous belt. The first screw rod is rotatably arranged in the first chute, the slider is threadedly sleeved outside the first screw rod, the slider is slidably connected to the inner wall of the first chute, the bottom of the moving plate is fixedly connected to the slider, one end of the first screw rod extends outside the first chute and is fixedly connected with the synchronous pulley, the synchronous belt is sleeved on the outer surfaces of the two synchronous pulleys, and the center of any one of the synchronous pulleys is connected with a first motor for driving it to rotate.

[0012] Further, the fixing member includes a mounting plate, a column, a second screw rod and a pressing plate. The mounting plate is arranged on the top of the fixing plate and / or the moving plate, the column is fixed on the mounting plate, the second screw rod is located on the side of the column away from the bending assembly, and one end of the second screw stud is rotatably connected to the mounting plate. The pressing plate is located above the mounting plate, the second screw rod threadedly penetrates through the pressing plate, and the column slidably penetrates through the pressing plate.

[0013] Further, a groove is arranged at the bottom of the pressing plate between the column and the second screw rod.

[0014] Further, a rubber anti-slip pad is arranged at the bottom of the pressing plate.

[0015] Further, the bending assembly further includes a first rack, a second rack and a gear. Two groups of sliding plates are arranged in parallel side by side and are both slidably connected to the top of the bottom plate. The first rack and the second rack are respectively connected to the opposite sides of the two groups of sliding plates. The gear is arranged on the top of the bottom plate between the first rack and the second rack, and both the first rack and the second rack are meshed with the gear.

[0016] Further, the center of the gear is connected with a second motor for driving it to rotate, and the second motor is fixed to the bottom of the bottom plate.

[0017] Further, the clamping member includes a guide cylinder, a bidirectional threaded rod, a guide post and an arc-shaped clamping plate. The guide cylinder is fixed to the top of the sliding plate through a first mounting bracket. Second mounting brackets are symmetrically arranged on the side wall of the guide cylinder. The bidirectional threaded rod is rotatably arranged between the second mounting brackets. The guide post is arranged parallel to the bidirectional threaded rod. The arc-shaped clamping plate is located at the opening of the guide cylinder and is symmetrically arranged about the axis of the guide cylinder. The bidirectional threaded rod threadedly penetrates through the end of the arc-shaped clamping plate, and the guide post slidably penetrates through the end of the arc-shaped clamping plate.

[0018] Further, a rotating handle is arranged at one end of the bidirectional threaded rod penetrating through the second mounting bracket.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] A stretching component and a bending component are arranged on the bottom plate of the present utility model. The fixed plate and the moving plate of the stretching component are symmetrically arranged. When testing a wire harness, one end of the wire harness is fixed on the first fixing part at the top of the moving plate, and then the wire harness is pulled. The wire harness is successively wound around the first fixing part on the fixed plate, the second fixing part on the fixed plate, and the second fixing part on the moving plate, and so on, alternately winding and arranging the wire harness in a circulating manner. Then, the winding position of the wire harness is fixed by the fixing part, so that the wire harness is arranged in parallel between the moving plate and the fixed plate. After the wire harness is fixed, the moving plate is driven to reciprocate along its width direction to stretch the wire harness multiple times; after stretching a certain number of times, the clamping part of the bending component is used to clamp and fix the wire harness between the fixed plate and the moving plate, and then the sliding plate is driven to reciprocate along its length direction. The movement of the sliding plate drives the wire harness to swing back and forth along the length direction of the sliding plate to bend the wire harness multiple times. By stretching and bending the wire harness multiple times, the use conditions of the wire harness under stretching and bending working conditions are simulated, so as to evaluate the durability of the wire harness in the use state; through the multiple fixing parts on the top of the fixed plate and the moving plate, it is convenient to fix a longer wire harness, so as to realize the overall durability test of the longer wire harness.

[0021] It should be understood that the content described in the utility model content part is not intended to limit the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present utility model will become more obvious:

[0023] Figure 1 It is a top view structural schematic diagram of the present utility model;

[0024] Figure 2 It is a side view structural schematic diagram of the fixing part;

[0025] Figure 3 It is a front view structural schematic diagram of the clamping part;

[0026] Figure 4 It is a top view structural schematic diagram of the clamping part;

[0027] Reference numerals in the drawings: 1, bottom plate; 2, stretching component; 3, bending component;

[0028] 11, first chute;

[0029] 21. Fixed plate; 22. Movable plate; 23. Fixing member; 24. Driving member;

[0030] 31. Sliding plate; 32. Clamping member; 33. First rack; 34. Second rack; 35. Gear;

[0031] 231. Mounting plate; 232. Column; 233. Second screw; 234. Pressure plate; 235. Rubber anti-slip pad;

[0032] 241. First screw; 242. Synchronous pulley; 243. Synchronous belt; 244. First motor;

[0033] 321. Guide cylinder; 322. Bidirectional threaded rod; 323. Guide post; 324. Arc-shaped clamping plate; 325. First mounting bracket; 326. Second mounting bracket; 327. Rotating handle. Detailed implementation manners

[0034] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, rather than limiting the utility model. Additionally, it should be noted that, for the sake of description, only the parts related to the utility model are shown in the drawings.

[0035] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and embodiments.

[0036] Please refer to Figures 1 to 4 , the embodiment of the present utility model provides a wire harness durability test device, which includes a bottom plate 1, and a stretching component 2 and a bending component 3 are arranged on the top of the bottom plate 1;

[0037] The stretching component 2 includes a fixed plate 21 and a movable plate 22 symmetrically arranged on the top of the bottom plate 1. Specifically, the fixed plate 21 and the movable plate 22 are longitudinally long, and the length directions of both are the same as the length direction of the bottom plate 1; preferably, a plurality of fixing members 23 are evenly spaced along the length direction of the tops of the fixed plate 21 and the movable plate 22, and the fixing members 23 are used to fix the wire harness, so that the wire harnesses are arranged side by side and parallel between the fixed plate 21 and the movable plate 22, and the movable plate 22 can reciprocate along its width direction for stretching the wire harness;

[0038] The bending assembly 3 includes a sliding plate 31 disposed between the fixed plate 21 and the moving plate 22. Specifically, the sliding plate 31 is longitudinally elongated and the length direction of the sliding plate 31 is the same as the length direction of the bottom plate 1; preferably, the sliding plate 31 is arranged in parallel with the fixed plate 21. Along the length direction of the top of the sliding plate 31, a plurality of clamping members 32 for clamping the wire harness are arranged at equal intervals. The sliding plate 31 can slide reciprocally along its length direction for bending the wire harness.

[0039] Among them, the distance between two adjacent fixing members 23 is equal to the distance between two adjacent clamping members 32.

[0040] Such as Figure 1 As shown, the fixing members 23 on the tops of the fixed plate 21 and the moving plate 22 are arranged in order from left to right as the first fixing member, the second fixing member, the third fixing member, etc. The clamping members 32 on the top of the sliding plate 31 are arranged in order from left to right as the first clamping member, the second clamping member, the third clamping member, etc.

[0041] Specifically, in the initial state, the first fixing member on the fixed plate 21, the first fixing member on the moving plate 22, and the first clamping member on the sliding plate 31 are arranged in alignment front and back; before testing the wire harness, drive the moving plate 22 to move to the middle position of its slidable length. Subsequently, fix one end of the wire harness on the first fixing member on the moving plate 22, and then pull the wire harness, and wind the wire harness around the first clamping member on the sliding plate 31, the first fixing member on the fixed plate 21, the second fixing member on the fixed plate 21, the second clamping member on the sliding plate 31, the second fixing member on the moving plate 22, and so on in a cyclic and alternating manner. Subsequently, fix the part of the wire harness wound around the fixing member 23 through the fixing member 23, so that the longer wire harness is fixed in parallel between the fixed plate 21 and the moving plate 22. Subsequently, drive the moving plate 22 to reciprocally move along its width direction, and the wire harness alternates between a slack state and a taut state, performing a stretching operation on the wire harness. When stretching the wire harness, the clamping member 32 does not fix the wire harness, and the wire harness is only fixed by the fixing member 23; after the stretching test is completed, move the moving plate 22 to the position closest to the fixing member 21. At this time, the wire harness is in a slack state, and then operate the clamping member 32 to clamp and fix the wire harness. Subsequently, drive the sliding plate 31 to reciprocally move along its length direction. When the sliding plate 31 reciprocally moves, the wire harness swings back and forth along the length direction of the sliding plate 31 to bend the wire harness in this way. The durability test of the wire harness is completed by performing multiple stretching and bending operations on the wire harness; the multiple fixing members 23 on the tops of the fixed plate 21 and the moving plate 22 facilitate the fixing of the longer wire harness to realize the durability test of the whole longer wire harness.

[0042] In a preferred embodiment, such as Figure 1As shown in the figure, two first sliding grooves 11 are formed in the top of the bottom plate 1, and a driving member 24 for driving the moving plate 22 to move is arranged in the first sliding groove 11. The first sliding groove 11 is arranged along the width direction of the bottom plate 1.

[0043] In a preferred embodiment, as Figure 1 shown, the driving member 24 includes a first screw rod 241, a slider, a synchronous pulley 242 and a synchronous belt 243. The first screw rod 241 is rotatably arranged in the first sliding groove 11. The slider is threadedly sleeved on the outside of the first screw rod 241. The slider is slidably connected with the inner wall of the first sliding groove 11. The bottom of the moving plate 22 is fixedly connected with the slider. One end of the first screw rod 241 extends to the outside of the first sliding groove 11 and is fixedly connected with the synchronous pulley 242. The synchronous belt 243 is sleeved on the outer surfaces of the two synchronous pulleys 242. The center of any one of the synchronous pulleys 242 is connected with a first motor 244 for driving it to rotate. Specifically, by controlling the forward and reverse rotation of the first motor 244 through the prior art, the two synchronous pulleys 242 can be driven to rotate synchronously by the forward and reverse rotation of the first motor 244, and then the first screw rod 241 can be driven to rotate synchronously. The moving plate 22 is driven to move along its width direction by the forward and reverse rotation of the first screw rod 241. By arranging the synchronous pulley 242 and the synchronous belt 243 to drive the first screw rod 241 to rotate, the structure is simple and easy to implement, and only one motor is used, saving the power cost of the equipment.

[0044] In a preferred embodiment, as Figure 2 shown, the fixing member 23 includes a mounting plate 231, a column 232, a second screw rod 233 and a pressing plate 234. The mounting plate 231 is arranged on the top of the fixing plate 21 and / or the moving plate 22. The column 232 is fixed on the mounting plate 231. The second screw rod 233 is located on the side of the column 232 away from the bending assembly 3, and one end of the second screw 233 is rotatably connected with the mounting plate 231. The pressing plate 234 is located above the mounting plate 231. The second screw rod 233 threadedly penetrates through the pressing plate 234, and the column 232 slidably penetrates through the pressing plate 234. Specifically, when fixing the wire harness, the wire harness passes through between the column 232 and the second screw rod 233. After pulling the wire harness to a tight state, the pressing plate 234 is driven to descend by rotating the second screw rod 233 to fix the wire harness below it.

[0045] In a preferred embodiment, as Figure 2 shown, a groove is arranged at the bottom of the pressing plate 234 between the column 232 and the second screw rod 233. The arc surface of the groove matches the outer surface radian of the wire harness, and the groove is convenient for limiting the wire harness.

[0046] In a preferred embodiment, as Figure 2As shown, a rubber anti-skid pad 235 is provided at the bottom of the pressing plate 234. Specifically, the friction between the pressing plate 234 and the wiring harness can be increased by the rubber anti-skid pad 235, so that the wiring harness can be better fixed, and the rubber is a soft material, which can protect the outer surface of the wiring harness and prevent the pressing plate 234 from wearing its surface.

[0047] In a preferred embodiment, if Figure 1 As shown, the bending assembly 3 further includes a first rack 33, a second rack 34 and a gear 35. Two groups of sliding plates 31 are arranged in parallel and are both slidably connected to the top of the bottom plate 1. The first rack 33 and the second rack 34 are respectively connected to the opposite sides of the two groups of sliding plates 31. The gear 35 is arranged at the top of the bottom plate 1 between the first rack 33 and the second rack 34, and the first rack 33 and the second rack 34 are both meshed with the gear 35. Specifically, two parallel second slide grooves are arranged at the top of the bottom plate 1 along its length direction. The bottoms of the two sliding plates 31 are respectively slidably connected to the two second slide grooves, and limit plates are arranged at both ends of the two second slide grooves to prevent the sliding plates 31 from being separated from the second slide grooves due to sliding transition.

[0048] Preferably, the center of the gear 35 is connected to a second motor that drives it to rotate, and the second motor is fixed to the bottom of the base plate 1. The second motor is controlled to rotate forward and reversely by the prior art, and the second motor drives the gear 35 to rotate forward and reversely, and the gear 35 drives the first rack 33 and the second rack 34 to move in opposite directions, thereby driving the wire harness to swing back and forth with the position clamped by the clamping member 32 as the swing point, and the wire harness is bent multiple times.

[0049] In a preferred embodiment, if Figure 3 and Figure 4As shown, the clamping member 32 includes a guiding cylinder 321, a bidirectional threaded rod 322, a guiding column 323, and an arc-shaped clamping plate 324. The guiding cylinder 321 is fixed to the top of the sliding plate 31 through a first mounting bracket 325. Second mounting brackets 326 are symmetrically arranged on the side wall of the guiding cylinder 321. The bidirectional threaded rod 322 is rotatably arranged between the second mounting brackets 326. The guiding column 323 is arranged parallel to the bidirectional threaded rod 322. The arc-shaped clamping plate 324 is located at the opening of the guiding cylinder 321 and is symmetrically arranged about the axis of the guiding cylinder 321. The bidirectional threaded rod 322 threadedly penetrates through the end of the arc-shaped clamping plate 324, and the guiding column 323 slidably penetrates through the end of the arc-shaped clamping plate 324. The wire harness passing through the guiding cylinder 321 is lifted by the first mounting bracket 325, so that the height of the wire harness is higher than the heights of the gear 35, the first rack 33, and the second rack 35, avoiding the wire harness being wound around the gear 35, the first rack 33, and the second rack 35. Specifically, a threaded hole and a through hole are respectively formed at the top of each of the two arc-shaped clamping plates 324. The bidirectional threaded rod 322 penetrates through the threaded holes of the two arc-shaped clamping plates 324 and is threadedly connected to the threaded holes. The guiding column 323 penetrates through the through holes of the two arc-shaped clamping plates 324 and is slidably connected to the through holes. Rotating the bidirectional threaded rod 322 can drive the two arc-shaped clamping plates 324 to approach or separate from each other. When a tensile test is performed on the wire harness, the wire harness passes through the guiding cylinder 321, and the arc-shaped clamping plate 324 does not fix the wire harness; when a bending test is performed on the wire harness, the two arc-shaped clamping plates 324 are driven to approach each other by the bidirectional threaded rod 322 to fix the wire harness.

[0050] In a preferred embodiment, as Figure 3 and Figure 4 shown, a rotating handle 327 is arranged at one end of the bidirectional threaded rod 322 penetrating through the second mounting bracket 326. It is convenient to rotate the bidirectional threaded rod 322 by rotating the handle.

[0051] Working principle:

[0052] Before testing the wire harness, first move the moving plate 22 to the middle position of the first sliding groove 11. Then fix one end of the wire harness on the first fixing member on the moving plate 22, and then pull the wire harness to drive the wire harness through the guiding cylinder 321, and then drive the wire harness through the first fixing member on the fixing plate 21, the second fixing member on the fixing plate 21, the guiding cylinder 321 on the second clamping member on the sliding plate 31, and the second fixing member on the moving plate 22, and so on in a cyclic and alternating manner. Then fix the part of the wire harness wound around the fixing member 23 through the fixing member 23, so that the longer wire harnesses are fixed in parallel between the fixing plate 21 and the moving plate 22. Then start the first motor 244 to drive the moving plate 22 to reciprocate along its width direction, and the wire harness changes back and forth between the relaxed state and the taut state to perform a stretching operation on the wire harness. When stretching the wire harness, the arc-shaped clamping plate 324 does not fix the wire harness, and the wire harness is only fixed by the fixing member 23. After the stretching test is completed, move the moving plate 22 to the end of the first sliding groove 11 closest to the fixing member 21. At this time, the wire harness is in a relaxed state, and then rotate the bidirectional threaded rod 322 to drive the arc-shaped clamping plates 324 to approach each other to clamp and fix the wire harness. Then drive the sliding plate 31 to reciprocate along its length direction through the first rack 33, the second rack 34 and the gear 35. When the sliding plate 31 reciprocates, the wire harness swings back and forth with the position clamped by the clamping member 32 as the swing point to bend the wire harness. This application simulates the use conditions of the wire harness under stretching and bending conditions by stretching and bending the wire harness multiple times, so as to evaluate the durability of the wire harness in the used state; the multiple fixing members 23 on the tops of the fixing plate 21 and the moving plate 22 facilitate the fixing of the longer wire harnesses, so as to realize the durability test of the whole longer wire harness.

[0053] In the description of this specification, terms such as "connection", "installation", "fixation" should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In the description of this specification, the description of terms such as "one embodiment", "some embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0055] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A harness durability test device, characterized in that, Comprising: Base plate; Stretching assembly, including fixing plates and moving plates symmetrically arranged on the top of the base plate. A plurality of fixing members are evenly spaced along the length direction of the tops of the fixing plates and the moving plates. The fixing members are used to fix the wire harnesses so that the wire harnesses are arranged side by side and parallel between the fixing plates and the moving plates. The moving plate can reciprocate along its width direction for stretching the wire harnesses; Bending assembly, including a sliding plate arranged between the fixing plate and the moving plate. The sliding plate is arranged parallel to the fixing plate. A plurality of clamping members for clamping the wire harnesses are evenly spaced along the length direction of the top of the sliding plate. The sliding plate can reciprocate along its length direction for bending the wire harnesses; Wherein, the distance between adjacent two of the fixing members is equal to the distance between adjacent two of the clamping members.

2. The harness durability test device according to claim 1, characterized in that, Two first chutes are formed in the top of the base plate, and a driving member for driving the moving plate to move is arranged in the first chutes.

3. The harness durability test device according to claim 2, characterized in that, The driving member includes a first screw rod, a slider, a synchronous pulley and a synchronous belt. The first screw rod is rotatably arranged in the first chute. The slider is threadedly sleeved on the outside of the first screw rod. The slider is slidably connected to the inner wall of the first chute. The bottom of the moving plate is fixedly connected to the slider. One end of the first screw rod extends outside the first chute and is fixedly connected to the synchronous pulley. The synchronous belt is sleeved on the outer surfaces of the two synchronous pulleys. The center of any one of the synchronous pulleys is connected to a first motor for driving it to rotate.

4. A wire harness durability test device according to claim 1, characterized in that, The fixing member includes a mounting plate, a column, a second screw rod and a pressing plate. The mounting plate is arranged on the top of the fixing plate and / or the moving plate. The column is fixed on the mounting plate. The second screw rod is located on the side of the column away from the bending assembly, and one end of the second screw rod is rotatably connected to the mounting plate. The pressing plate is located above the mounting plate. The second screw rod threadedly penetrates through the pressing plate, and the column slidably penetrates through the pressing plate.

5. The harness durability test device according to claim 4, characterized in that, A groove is formed between the column and the second screw rod at the bottom of the pressing plate.

6. The harness durability test device according to claim 5, characterized in that, A rubber anti-slip pad is arranged at the bottom of the pressing plate.

7. A harness durability test device according to claim 1, characterized in that, The bending assembly further includes a first rack, a second rack and a gear. Two groups of the sliding plates are arranged in parallel and are both slidably connected to the top of the base plate. The first rack and the second rack are respectively connected to the opposite sides of the two groups of the sliding plates. The gear is arranged on the top of the base plate between the first rack and the second rack, and both the first rack and the second rack are meshed with the gear.

8. A harness durability test device according to claim 7, wherein, The center of the gear is connected to a second motor for driving it to rotate. The second motor is fixed to the bottom of the base plate.

9. A harness durability test device according to claim 1, characterized in that, The clamping member includes a guiding cylinder, a bidirectional threaded rod, a guiding column and an arc-shaped clamping plate. The guiding cylinder is fixed to the top of the sliding plate through a first mounting bracket. Second mounting brackets are symmetrically arranged on the side wall of the guiding cylinder. The bidirectional threaded rod is rotatably arranged between the second mounting brackets. The guiding column is arranged parallel to the bidirectional threaded rod. The arc-shaped clamping plate is located at the opening of the guiding cylinder and is symmetrically arranged about the axis of the guiding cylinder. The bidirectional threaded rod threadedly penetrates through the end of the arc-shaped clamping plate, and the guiding column slidably penetrates through the end of the arc-shaped clamping plate.

10. A harness durability test device according to claim 9, characterized in that, One end of the bidirectional threaded rod penetrates through the second mounting bracket and is provided with a rotating handle.

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