Scratch and wear resistance testing machine for automobile wire harness

Abstract

The invention discloses an automobile wire harness scratch and wear resistance testing machine which comprises a workbench, a fixing column, a vertical plate and a testing assembly. The testing assembly comprises a testing seat, a fixed part, a movable part and an elastic seat, the movable part is sleeved with an adjusting part, the adjusting part extends out of the testing seat, hinge strips are symmetrically arranged on the movable part, one end of each hinge strip is hinged to the movable part through a second hinge rod, and the other end of each hinge strip is hinged to the rotating part through a third hinge rod. The automobile wire harness scratch and wear resistance testing machine is compact in structure and ingenious in design. Before testing, the adjusting piece can be rotated according to the diameter of the automobile wire harness needing to be tested to adapt to testing of the automobile wire harnesses with different diameters, pressure can be applied to the automobile wire harness, the stressed scraping condition of the automobile wire harness subjected to pressure application can be truly simulated, testing data in different environments can be obtained, and the testing efficiency is improved. And analysis of designers is facilitated.

Description

Technical Field

[0001] The present invention relates to the abrasion resistance testing technology of automotive wire harnesses, and particularly to a scratch and abrasion resistance testing machine for automotive wire harnesses. Background Art

[0002] Automotive wire harnesses are the main network of automotive circuits and the carrier for the existence of automotive circuits. They are the bridge and link for the operation of vehicle electrical components and the nervous system for the transmission and distribution of electricity and signals in vehicles. High-voltage wire harnesses can be configured inside and outside electric vehicles according to different voltage levels. Before the high-voltage wire harnesses are put into use, it is necessary to test their abrasion resistance.

[0003] Due to the complex internal structure of automobiles, the wire harnesses at different positions have different contact and friction with external materials. Therefore, it is necessary to be able to simulate the data of contact and friction with products of different materials.

[0004] CN210108880U discloses a wire harness abrasion resistance testing device, which uses a scraping needle to move back and forth, so that the scraping needle continuously scrapes the wire installed in the wire laying seat to test the abrasion resistance of the wire. There is only one test state, and the position and state of the wire harness cannot be adjusted, making it difficult to simulate the actual environment where the wire harness is located. At the same time, it cannot adapt to wire harnesses of different diameters, and the data obtained from the test is limited. Summary of the Invention

[0005] In order to solve the defects existing in the above-mentioned prior art, the present invention proposes a scratch and abrasion resistance testing machine for automotive wire harnesses.

[0006] The technical solution of the present invention is realized as follows:

[0007] A scratch and abrasion resistance testing machine for automotive wire harnesses, comprising:

[0008] A workbench, on which symmetrically arranged slide rails are provided. A slide seat is provided on the slide rails, and a cylinder is provided on the slide seat. One end of the slide rail is provided with a support seat, and the other end is provided with a bearing seat. A motor is provided on the support seat, and a lead screw is provided on the motor. The lead screw is arranged in the middle of the slide seat;

[0009] Fixed columns symmetrically arranged on the workbench, on which a first wire passing hole is provided, and a first fastener extending into the first wire passing hole is also provided on the fixed column;

[0010] A vertical plate installed on the workbench, on which a mounting plate is provided. Symmetrically arranged fastening components are provided at the lower end of the mounting plate and on the slide seat;

[0011] And a test component provided on the cylinder. The test component is connected to the cylinder through a mounting block. The test component includes:

[0012] Testing base, an installation chamber is formed in the middle of the testing base, and a cover body is provided on the testing base;

[0013] A fixing member disposed in the installation chamber, the fixing member is composed of a fixing plate and a fixing seat, symmetrically arranged hinge plates are further provided on the fixing seat, a rotating area is formed in the middle of the fixing seat, a rotating member is provided on the hinge plate, and the rotating member is hingedly connected to the hinge plate through a first hinge rod;

[0014] A moving member disposed in the rotating area, an adjusting member is sleeved outside the moving member, the adjusting member extends out of the testing base, symmetrically arranged hinge strips are provided on the moving member, one end of the hinge strip is hingedly connected to the moving member through a second hinge rod, and the other end is hingedly connected to the rotating member through a third hinge rod;

[0015] And an elastic seat installed on the fixing plate, a scraping area is formed between the elastic seat and the rotating member.

[0016] In the present invention, a first baffle and a second baffle are provided in the fastening assembly, a clamping area is formed between the first baffle and the second baffle, a second fastener is provided on the first baffle, and the second fastener extends into the clamping area.

[0017] In the present invention, the adjusting member is composed of a rotating body and a cylinder body, anti-slip lines are provided on the rotating body, a first through hole is formed in the middle of the cylinder body, a positioning ring is provided on the cylinder body, and a positioning groove matched with the positioning ring is provided in the rotating area.

[0018] In the present invention, internal threads are provided in the first through hole, a second through hole is provided in the middle of the moving member, external threads matched with the internal threads are provided on the moving member, an opening hole is provided at one end of the testing base, and a second wire passing hole is provided at the other end, and the center lines of the second wire passing hole, the first through hole and the second through hole coincide.

[0019] In the present invention, a limiting groove is provided on the fixing plate, a limiting body is provided on the moving member, and a limiting block matched with the limiting groove is provided on the limiting body.

[0020] In the present invention, an elastic arm is provided on the elastic seat, an avoidance hole is provided between the upper end of the elastic arm and the elastic seat, an elastic gap is formed between the elastic arm and the elastic seat, a fixing groove is provided in the middle of the elastic seat, a pressure sensor is provided in the fixing groove, and a moving gap is formed between the pressure sensor and the elastic arm.

[0021] In the present invention, a plurality of protruding parts are provided on the elastic arm.

[0022] In the present invention, a T-shaped part is provided on the elastic seat, and a T-shaped groove matched with the T-shaped part is provided on the fixing plate.

[0023] In the present invention, a holding groove is provided on the rotating member, a scraping member is provided in the holding groove, the scraping member is mounted on the rotating member by a first bolt, and a plurality of scraping teeth are provided on the scraping member.

[0024] In the present invention, a plurality of limiting teeth are further provided on the rotating member, a limiting member is provided in the middle of the hinge plate, the limiting member is hinged to the hinge plate by a fourth hinge rod, ratchet teeth matching with the limiting teeth are provided on the limiting member, a fifth hinge rod is provided at the lower end of the limiting member, a pulling member is provided on the hinge rod, the pulling member is arranged on the test seat and extends to the outside, a spring is sleeved on the pulling member, one end of the spring contacts with the fifth hinge rod, and the other end contacts with the inner wall of the test seat.

[0025] Implementing the automotive wire harness scratch resistance testing machine of the present invention has the following beneficial effects: The automotive wire harness scratch resistance testing machine has a compact structure and ingenious design. Before the test, the rotation adjusting member can be adjusted according to the diameter of the automotive wire harness to be tested to adapt to the testing of automotive wire harnesses with different diameters, and the automotive wire harness can also be pressured. After being pressured, the automotive wire harness can more realistically simulate the force scratching situation, and test data under different environments can be obtained, which is convenient for designers to analyze. Description of the Drawings

[0026] Figure 1 Schematic structural diagram of the automotive wire harness scratch resistance testing machine of the present invention;

[0027] Figure 2 For Figure 1 Schematic structural diagram of the sliding seat, cylinder, fastening assembly and test assembly in

[0028] Figure 3 For Figure 2 Schematic structural diagram of the test assembly in

[0029] Figure 4 For Figure 3 Top-down perspective view of

[0030] Figure 5 For Figure 3 Exploded view of

[0031] Figure 6 For Figure 5 Schematic structural diagram of the cover body in

[0032] Figure 7 For Figure 5 Schematic structural diagram of the test seat in

[0033] Figure 8 For Figure 5 Schematic structural diagram of the fixing member in

[0034] Figure 9 is Figure 5 a perspective view of the adjusting member structure in

[0035] Figure 10 is Figure 5 a schematic structural diagram of the moving member, elastic seat, rotating member, pulling member, restricting member and hinged bar in

[0036] Figure 11 is Figure 10 a partially enlarged view at A in

[0037] Figure 12 is Figure 10 a partially enlarged view at B in

[0038] Figure 13 is Figure 10 an exploded view of the rotating member and the scraping member in

[0039] In the figure: workbench 1, fixed column 2, vertical plate 3, test assembly 4, sliding seat 5, slide rail 6, air cylinder 7, support seat 8, bearing seat 9, motor 10, lead screw 11, adjusting member 12, elastic seat 13, rotating member 14, elastic arm 15, scraping member 16, scraping area 17, first wire passing hole 18, first fastener 19, mounting plate 20, fastening assembly 21, first baffle 22, second baffle 23, clamping area 24, second fastener 25, test seat 26, fixing member 27, moving member 28, installation chamber 29, opening hole 30, second wire passing hole 31, first through hole 32, second through hole 33, cover body 34, second bolt 35, holding block 36, positioning arc notch 37, third wire passing hole 38, protruding portion 39, scraping teeth 40, fixing plate 41, fixing seat 42, hinged plate 43, rotating area 44, first hinged rod 45, holding groove 46, arc-shaped plate 47, side plate 48, first bolt 49, limiting teeth 50, restricting member 51, fourth hinged rod 52, first hinged end 53, second hinged end 54, fifth hinged rod 55, pulling member 56, ratchet teeth 57, pulling end 58, pulling rod 59, spring 60, hinged bar 61, second hinged rod 62, third hinged rod 63, limiting groove 64, limiting body 65, limiting block 66, rotating body 67, cylinder body 68, positioning ring 69, positioning groove 70, internal thread 71, external thread 72, avoidance hole 73, elastic gap 74, fixing groove 75, pressure sensor 76, moving gap 77, T-shaped groove 78, moving hole 79, T-shaped portion 80. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] Embodiment 1

[0042] As Figures 1 to 13As shown in the figure, this scratch-resistant test machine for automotive wiring harnesses of the present invention includes a workbench 1, fixed columns 2, vertical plates 3, and a test assembly 4. The fixed columns 2 and vertical plates 3 are arranged on the workbench 1, and the test assembly 4 is arranged on the workbench 1 through a sliding seat 5.

[0043] On the workbench 1, symmetrically arranged slide rails 6 are provided. A sliding seat 5 is arranged on the slide rails 6, and the sliding seat 5 is in sliding cooperation with the slide rails 6. A cylinder 7 is arranged on the sliding seat 5. One end of the slide rail 6 is provided with a support seat 8, and the other end is provided with a bearing seat 9. A motor 10 is arranged on the support seat 8, and a lead screw 11 is arranged on the motor 10. The lead screw 11 is arranged in the middle of the sliding seat 5. When the motor 10 is started, the lead screw 11 is driven by the motor 10 to rotate, so that the sliding seat 5 moves on the slide rail 6, driving the test assembly 4 on the sliding seat 5 to move left and right, and performing a scratch test on the automotive wiring harness on the fixed column 2. By rotating the adjusting member 12, the distance between the elastic seat 13 and the rotating member 14 can be changed, so as to keep the elastic arm 15 and the scratching member 16 in contact with the automotive wiring harness. When the width of the scratching area 17 is smaller, the pressure exerted by the rotating member 14 on the automotive wiring harness at this time is greater, so that when the sliding seat 5 moves, the scratching degree of the automotive wiring harness by the scratching member 16 is greater, and test data under different pressures can be obtained.

[0044] The fixed columns 2 are symmetrically arranged on the workbench 1. A first wire passing hole 18 is provided on the fixed column 2, and a first fastener 19 extending into the first wire passing hole 18 is also provided on the fixed column 2. Place the automotive wiring harness to be tested in the first wire passing holes 18 of the two fixed columns 2, and then rotate the first fastener 19 so that the first fastener 19 fixes the automotive wiring harness in the first wire passing hole 18.

[0045] During the test, the automotive wiring harness can be kept in a straightened state or in a parabolic state. Since the data obtained from the test under different states is different, the application of the automotive wiring harness in the actual environment can be simulated to a large extent, and relatively real simulation test data can be obtained.

[0046] The vertical plate 3 is installed on the workbench 1. An installation plate 20 is provided on the vertical plate 3, and symmetrically arranged fastening components 21 are provided at the lower end of the installation plate 20 and on the sliding seat 5. The fastening component 21 is provided with a first baffle 22 and a second baffle 23, and a clamping area 24 is formed between the first baffle 22 and the second baffle 23. A second fastener 25 is provided on the first baffle 22, and the second fastener 25 extends into the clamping area 24. The adjustment method of the fastening component 21 is the same as that between the fixed column 2 and the first fastener 19, that is, just rotate the second fastener 25. When the vertical test of the automotive wire harness is required, the two ends of the automotive wire harness can be arranged in the clamping area 24, and then the second fastener 25 is rotated, so as to lock the automotive wire harness through the second fastener 25, keeping one end of the automotive wire harness connected to the fastening component 21 at the lower end of the installation plate 20 and the other end connected to the fastening component 21 on the sliding seat 5.

[0047] Embodiment 2

[0048] The test component 4 is arranged on the cylinder 7. The test component 4 is connected to the cylinder 7 through the mounting block. The test component 4 includes a test seat 26, a fixing member 27, a moving member 28 and an elastic seat 13. The fixing member 27 is arranged in the middle of the test seat 26, the moving member 28 is arranged in the middle of the fixing member 27, and the elastic seat 13 is installed on the fixing member 27.

[0049] An installation chamber 29 is formed in the middle of the test seat 26. One end of the test seat 26 is provided with an opening hole 30, and the other end is provided with a second wire passing hole 31. The center lines of the second wire passing hole 31, the first through hole 32 and the second through hole 33 coincide, and the opening hole 30 and the second wire passing hole 31 are kept in communication with the installation chamber 29.

[0050] A cover body 34 is provided on the test seat 26. The cover body 34 is connected to the test seat 26 through a second bolt 35. Two holding blocks 36 are provided at the lower end of the cover body 34, and a positioning arc opening 37 is provided at the lower end of the holding block 36 for cooperating with the adjusting member 12, so as to limit the position of the adjusting member 12, enabling the adjusting member 12 to rotate but not move.

[0051] A third wire passing hole 38 is provided on the test seat 26 and the cover body 34. The third wire passing hole 38 is used for testing the automotive wire harness in the vertical state, so that the automotive wire harness is located between the elastic arm 15 and the scraping member 16, keeping the convex portion 39 and the scraping teeth 40 parallel to the automotive wire harness, so as to test the scraping effects in different states.

[0052] The fixing member 27 is arranged in the installation chamber 29. The fixing member 27 is composed of a fixing plate 41 and a fixing seat 42. The fixing seat 42 is also provided with symmetrically arranged hinge plates 43. A rotation area 44 is formed in the middle of the fixing seat 42. One end of the rotation area 44 close to the fixing plate 41 is provided with a moving hole 79 for cooperating with the moving member 28. The other end of the rotation area 44 away from the fixing plate 41 is open, so as to facilitate the installation of the adjusting member 12. A rotating member 14 is arranged on the hinge plate 43. The rotating member 14 is hinged to the hinge plate 43 through a first hinge rod 45.

[0053] A holding groove 46 is arranged on the rotating member 14. A scraping member 16 is arranged in the holding groove 46. The scraping member 16 is composed of an arc plate 47 and a side plate 48. The arc plate 47 is installed in cooperation with the holding groove 46. The arc length of the arc plate 47 is less than the arc length of the holding groove 46, so as to facilitate the installation of different soft materials, such as cloth or plastic paper of different materials, so as to simulate the scraping test between the automotive wiring harness and different materials. The scraping member 16 is installed on the rotating member 14 through a first bolt 49. Multiple scraping teeth 40 are arranged on the scraping member 16. The scraping teeth 40 can be provided with pointed heads or round heads.

[0054] Multiple limiting teeth 50 are also arranged on the rotating member 14. A limiting member 51 is arranged in the middle of the hinge plate 43. The limiting member 51 is hinged to the hinge plate 43 through a fourth hinge rod 52. The limiting member 51 is composed of a first hinge end 53 and a second hinge end 54. The first hinge end 53 is hinged to the hinge plate through the fourth hinge rod 52. The second hinge end 54 is hinged to a pulling member 56 through a fifth hinge rod 55.

[0055] The limiting member 51 is provided with ratchet teeth 57 for cooperating with the limiting teeth 50. The ratchet teeth 57 are arranged on the first hinge end 53. A fifth hinge rod 55 is arranged at the lower end of the limiting member 51. A pulling member 56 is arranged on the hinge rod. The pulling member 56 is arranged on the test seat 26 and extends to the outside. The pulling member 56 is composed of a pulling end 58 and a pulling rod 59. The pulling rod 59 is hinged to the fifth hinge rod 55. The test seat 26 is provided with a pulling hole for cooperating with the pulling rod 59. The pulling end 58 is outside the test seat 26.

[0056] A spring 60 is sleeved on the pulling member 56. One end of the spring 60 contacts the fifth hinge rod 55, and the other end contacts the inner wall of the test seat 26. The spring 60 can keep the position of the limiting member 51 so that it will not rotate easily.

[0057] The limiting member 51 can limit the counterclockwise rotation of the rotating member 14, so that when the adjusting member 12 adjusts the position, the width of the scraping area 17 remains unchanged. The limiting member 51 can limit the narrowing of the width of the scraping area 17, so that when the scraping member 16 tests the automotive wire harness, the scraping member 16 will not continue to squeeze the automotive wire harness. When it is necessary to keep the rotating member 14 rotating counterclockwise, the pulling member 56 needs to be pulled, so that the spring 60 is compressed. The pulling member 56 drives the limiting member 51 to rotate around the fourth hinge rod 52, keeping the limiting tooth 50 separated from the ratchet tooth 57.

[0058] When it is necessary to rotate the rotating member 14 clockwise, the rotating member 14 can push the ratchet tooth 57 through the limiting tooth 50, keeping the limiting member 51 rotating around the fourth hinge rod 52. The limiting tooth 50 pushes the ratchet tooth 57 downward, so that the ratchet tooth 57 is in different limiting teeth 50.

[0059] The moving member 28 is arranged in the rotating area 44. The adjusting member 12 is sleeved outside the moving member 28. The adjusting member 12 extends outside the test seat 26. The moving member 28 is provided with symmetrically arranged hinge strips 61. One end of the hinge strip 61 is hinged to the moving member 28 through the second hinge rod 62, and the other end is hinged to the rotating member 14 through the third hinge rod 63.

[0060] A limiting groove 64 is arranged on the fixing plate 41. A limiting body 65 is arranged on the moving member 28. A limiting block 66 matched with the limiting groove 64 is arranged on the limiting body 65. So that the moving member 28 can only move but not rotate under the cooperation with the adjusting member 12, so as to push or pull the rotating member 14. When pushing the rotating member 14, the rotating member 14 rotates clockwise. When pulling the rotating member 14, the rotating member 14 rotates counterclockwise.

[0061] The adjusting member 12 is composed of a rotating body 67 and a cylinder 68. The rotating body 67 is provided with anti-slip lines. A first through hole 32 is formed in the middle of the cylinder 68. A positioning ring 69 is arranged on the cylinder 68. A positioning groove 70 matched with the positioning ring 69 is arranged in the rotating area 44. An internal thread 71 is arranged in the first through hole 32. A second through hole 33 is arranged in the middle of the moving member 28. An external thread 72 matched with the internal thread 71 is arranged on the moving member 28.

[0062] The elastic seat 13 is installed on the fixed plate 41, and a scraping area 17 is formed between the elastic seat 13 and the rotating member 14. An elastic arm 15 is provided on the elastic seat 13. An avoidance hole 73 is provided between the upper end of the elastic arm 15 and the elastic seat 13. An elastic gap 74 is formed between the elastic arm 15 and the elastic seat 13. A fixing groove 75 is provided in the middle of the elastic seat 13, and a pressure sensor 76 is provided in the fixing groove 75. The pressure sensor 76 can adopt the existing technology and will not be elaborated in detail here. An activity gap 77 is formed between the pressure sensor 76 and the elastic arm 15, and the pressure sensor 76 can detect the pressure exerted by the rotating member 14 on the automotive wire harness.

[0063] Multiple protrusions 39 are provided on the elastic arm 15, and the protrusions 39 can cooperate with the scraping teeth 40 to scrape the surface of the automotive wire harness. A T-shaped portion 80 is provided on the elastic seat 13, and a T-shaped groove 78 matching the T-shaped portion 80 is provided on the fixed plate 41.

[0064] When it is necessary to test the automotive wire harness, both ends of the automotive wire harness are fixed to the fixed posts 2 or the fastening assemblies 21. At the same time, the state of the automotive wire harness can be adjusted, which can be a straight state or a parabolic state. Then the motor 10 or the cylinder 7 is started. The motor 10 drives the test assembly 4 to perform a scraping test on the horizontal automotive wire harness, while the cylinder 7 performs a scraping test on the vertical automotive wire harness. At the same time, before the test, the rotating adjustment member 12 can be adjusted according to the diameter of the automotive wire harness to be tested. The adjustment member 12 drives the moving member 28 to pull the rotating member 14 to keep the rotating member 14 exert pressure on the automotive wire harness to be tested. After the pressure is applied, the automotive wire harness can more realistically simulate the force scraping situation and obtain test data in different environments, which is convenient for the analysis of designers.

[0065] For different automotive wire harnesses, scraping members 16 with different shapes can also be replaced, so as to replace different scraping teeth 40. The testability is extensive, which is beneficial for testers to perform scraping tests on different automotive wire harnesses and with different materials for the automotive wire harness, and expand the data collection.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automobile wiring harness scratch and abrasion resistance testing machine, characterized in that, Including: A workbench, on which symmetrically arranged slide rails are provided. Slide seats are arranged on the slide rails, and cylinders are arranged on the slide seats. One end of the slide rail is provided with a support seat, and the other end is provided with a bearing seat. A motor is arranged on the support seat, and a lead screw is arranged on the motor. The lead screw is arranged in the middle of the slide seat. Fixed columns symmetrically arranged on the workbench, on which first wire passing holes are provided, and first fasteners extending into the first wire passing holes are also arranged on the fixed columns. A vertical plate installed on the workbench, on which a mounting plate is provided. Symmetrically arranged fastening components are provided at the lower end of the mounting plate and on the slide seat. And a test component arranged on the cylinder. The test component is connected to the cylinder through a mounting block. The test component includes: A test seat, in the middle of which an installation chamber is formed, and a cover body is arranged on the test seat. A fixing member arranged in the installation chamber. The fixing member is composed of a fixing plate and a fixing seat. Symmetrically arranged hinged plates are also arranged on the fixing seat. A rotating area is formed in the middle of the fixing seat. A rotating member is arranged on the hinged plate, and the rotating member is hingedly connected to the hinged plate through a first hinge rod. A moving member arranged in the rotating area. An adjusting member is sleeved outside the moving member. The adjusting member extends out of the test seat. Symmetrically arranged hinged strips are arranged on the moving member. One end of the hinged strip is hingedly connected to the moving member through a second hinge rod, and the other end is hingedly connected to the rotating member through a third hinge rod. And an elastic seat installed on the fixing plate. A grinding area is formed between the elastic seat and the rotating member.

2. The automotive wiring harness scratch and abrasion resistance testing machine according to claim 1, wherein, In the fastening component, a first baffle and a second baffle are provided. A clamping area is formed between the first baffle and the second baffle. A second fastener is arranged on the first baffle, and the second fastener extends into the clamping area.

3. The automotive wire harness scratch and abrasion resistance testing machine according to claim 1, wherein The adjusting member is composed of a rotating body and a cylinder. Anti-slip lines are arranged on the rotating body. A first through hole is formed in the middle of the cylinder. A positioning ring is arranged on the cylinder. A positioning groove matched with the positioning ring is arranged in the rotating area.

4. The automotive wiring harness scratch and abrasion resistance testing machine according to claim 3, characterized in that, Internal threads are arranged in the first through hole. A second through hole is arranged in the middle of the moving member. External threads matched with the internal threads are arranged on the moving member. An opening hole is arranged at one end of the test seat, and a second wire passing hole is arranged at the other end. The center lines of the second wire passing hole, the first through hole and the second through hole coincide.

5. The automotive wiring harness scratch and abrasion resistance testing machine according to claim 1, characterized in that, A limiting groove is arranged on the fixing plate. A limiting body is arranged on the moving member. A limiting block matched with the limiting groove is arranged on the limiting body.

6. The automotive wire harness scratch and abrasion resistance testing machine according to claim 1, characterized in that An elastic arm is arranged on the elastic seat. An avoidance hole is arranged between the upper end of the elastic arm and the elastic seat. An elastic gap is formed between the elastic arm and the elastic seat. A fixing groove is arranged in the middle of the elastic seat. A pressure sensor is arranged in the fixing groove. An activity gap is formed between the pressure sensor and the elastic arm.

7. The automotive wiring harness scratch and abrasion resistance testing machine according to claim 6, wherein, Multiple protruding parts are arranged on the elastic arm.

8. The automotive wiring harness scratch and abrasion resistance testing machine according to claim 1, characterized in that, A T-shaped part is arranged on the elastic seat. A T-shaped groove matched with the T-shaped part is arranged on the fixing plate.

9. The automotive wiring harness scratch and abrasion resistance testing machine according to claim 1, wherein A holding groove is arranged on the rotating member. A grinding part is arranged in the holding groove. The grinding part is installed on the rotating member through a first bolt. Multiple grinding teeth are arranged on the grinding part.

10. The automotive wire harness scratch and abrasion resistance testing machine according to claim 9, characterized in that, There are also multiple limiting teeth provided on the rotating member. A limiting member is provided in the middle of the hinge plate. The limiting member is hinged to the hinge plate through a fourth hinge rod. The limiting member is provided with ratchet teeth that cooperate with the limiting teeth. A fifth hinge rod is provided at the lower end of the limiting member. A pulling member is provided on the hinge rod. The pulling member is arranged on the test seat and extends to the outside. A spring is sleeved on the pulling member. One end of the spring contacts the fifth hinge rod, and the other end contacts the inner wall of the test seat.

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