Automobile high-voltage wire harness wear resistance detection device

Abstract

The invention relates to the technical field of wire harness wear resistance detection, and discloses an automobile high-voltage wire harness wear resistance detection device which comprises an operation table and a to-be-detected automobile wire harness cable placed on the operation table, and the operation table is further provided with an optical detection sensor arranged on the outer side wall of the to-be-detected automobile wire harness cable in a sleeving mode. A fixed pulley abutting against the outer side wall of an automobile wire harness cable to be detected is arranged on the operation table, slides on the operation table in a lifting mode through a lifting assembly and rotates on the lifting assembly through a rotating shaft. According to the invention, the fixed pulley contacts and abuts against the outer side wall of the to-be-detected automobile wire harness cable, and the fixed pulley rotates to generate friction with the outer side wall of the to-be-detected automobile wire harness cable, so that the scene that the to-be-detected automobile wire harness cable accidentally falls off and is dragged and slides on the ground can be simulated; therefore, simulation friction detection can be carried out for the scene.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness wear resistance detection, in particular to a wear resistance detection device for a high-voltage wire harness of an automobile. Background Art

[0002] In modern cars, the electronic control system is closely related to the wiring harness. Therefore, from the perspective of car safety, there are high requirements for the wear resistance of the car wiring harness. The method usually used to test the wear resistance of the car high-voltage wiring harness is to manually grind the car's high-voltage wiring harness with an angle grinder to test its wear resistance. However, when manually testing the wear resistance of the car high-voltage wiring harness, the operation is cumbersome, time-consuming and labor-intensive, and the detection efficiency is low. At the same time, there are several problems in the detection process: First of all, the automotive wiring harness will encounter various wear conditions during actual use, but the existing technology can only perform one test for its wear resistance, that is, the effect of friction time on the automotive wiring harness cable, that is, by adjusting the friction time to observe the damage of the automotive wiring harness cable. This detection method is relatively simple and does not conform to the complex process in actual use; Secondly, the wear resistance test of automotive wiring harness cables requires multiple scenes, but the wear resistance test methods in the existing technology are single and cannot quickly switch between different scenes, which leads to low detection efficiency.

[0003] Therefore, we designed a wear resistance testing device for automotive high-voltage wire harnesses. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the damage of automobile wiring harness cables is only observed by adjusting the friction time in the existing technology. This detection method is relatively simple and does not conform to the complex process problem in actual use. A wear resistance detection device for automobile high-voltage wiring harness is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A wear resistance testing device for an automobile high-voltage wire harness comprises an operating table and an automobile wire harness cable to be tested placed on the operating table. The operating table is also provided with an optical detection sensor sleeved on the outer wall of the automobile wire harness cable to be tested. The operating table is provided with a fixed pulley that abuts against the outer wall of the automobile wire harness cable to be tested, and the fixed pulley is lifted and slid on the operating table through a lifting assembly. The fixed pulley rotates on the lifting assembly through a rotating shaft. The fixed pulley is provided with an arc-shaped friction plate assembly that slides radially, and a push switching assembly for switching the shape of the arc-shaped friction plate assembly is provided in the rotating shaft. The lifting assembly is provided with a drive assembly for driving the fixed pulley to rotate.

[0006] Preferably, the automobile wiring harness cable to be tested is fastened and buckled on the operating table through two fixing rings, and the fixed pulley is located between the two fixing rings.

[0007] Preferably, the lifting assembly comprises: There are two lifting frames, which are symmetrically arranged on both sides of the fixed pulley. The lifting frames are lifted vertically on the operating table through the lifting holes, and the rotating shaft rotates between the two lifting frames; The first electric telescopic rod is arranged at the bottom of the operating table, an end plate is fixed to the bottom of the lifting frame, and the output end of the first electric telescopic rod is fixed to the end plate.

[0008] Preferably, the drive assembly comprises: a first meshing gear and a second meshing gear, wherein the first meshing gear is coaxially fixed to the rotating shaft, and the first meshing gear and the second meshing gear are meshed with each other; A driving motor is fixed on one of the lifting frames, and an output end of the driving motor is coaxially fixed with the second meshing gear.

[0009] Preferably, a bracket is fixed to the side wall of the lifting frame, a second electric telescopic rod is installed on the bracket, and the output end of the second electric telescopic rod is coaxially fixed with the push switching assembly.

[0010] Preferably, the arc-shaped friction plate assembly includes a first concave arc plate, a second concave arc plate and a third concave arc plate. A sliding cavity is opened on the fixed pulley, and the arc-shaped friction plate assembly slides in the sliding cavity. The first concave arc plate, the second concave arc plate and the third concave arc plate are all provided in multiples. The first concave arc plate, the second concave arc plate and the third concave arc plate all have an arc surface, and the arc surface is adapted to the outer side wall of the automotive wiring harness cable to be tested; The arc surfaces of the first concave arc plate, the second concave arc plate and the third concave arc plate are provided with friction layers with different friction coefficients, and the friction coefficients increase in sequence.

[0011] Preferably, the first concave arc plate, the second concave arc plate and the third concave arc plate are arranged as a group, and are arranged in multiple groups of circles on the sliding cavity. A plurality of sliding grooves are opened radially on the sliding cavity. The first concave arc plate, the second concave arc plate and the third concave arc plate all slide radially on the sliding grooves through sliders.

[0012] Preferably, the push switching component includes: The telescopic block is provided in multiple pieces and is arranged in a circle on the outer wall of the rotating shaft. A built-in cavity is coaxially provided on the rotating shaft. A telescopic cavity connected to the built-in cavity is provided on the rotating shaft. The telescopic cavity is connected to the built-in cavity, and a chamfer is provided on the side of the telescopic block facing the built-in cavity.

[0013] Preferably, a first side groove is provided on one side of the telescopic cavity, a second side groove is provided on the side of the telescopic block facing the first side groove, and a same return spring is connected between the first side groove and the second side groove.

[0014] Preferably, the push switching component further includes: The telescopic disc is coaxially arranged in sequence. The outer wall of the telescopic disc is provided with multiple grooves. A telescopic rod fixed to the telescopic disc is coaxially inserted in the built-in cavity.

[0015] The beneficial effects of the present invention are: 1. The present invention adopts a fixed pulley that contacts and abuts against the outer wall of the automobile wiring harness cable to be tested. By rotating the fixed pulley, friction is generated between the fixed pulley and the outer wall of the automobile wiring harness cable to be tested, thereby simulating the scenario in which the automobile wiring harness cable to be tested accidentally falls off and drags and slides on the ground. Therefore, simulated friction detection can be performed for such scenarios.

[0016] 2. The present invention adopts a first concave arc plate, a second concave arc plate and a third concave arc plate, whose arc surfaces are provided with friction layers with different friction coefficients, and the friction coefficients increase successively. Therefore, the first concave arc plate or the second concave arc plate or the third concave arc plate with different friction coefficients can be selected to simulate the degree of friction for different road conditions, that is, by adjusting the contact friction between the first concave arc plate or the second concave arc plate or the third concave arc plate and the outer wall of the automobile wiring harness cable to be tested, the wear resistance of the automobile wiring harness cable to be tested and the correlation with the friction road surface can be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a wear resistance detection device for automotive high-voltage wire harnesses proposed by the present invention; Figure 2 This is a side view of a wear resistance detection device for automotive high-voltage wire harnesses proposed by the present invention; Figure 3 This is a schematic structural diagram of a fixed pulley in a wear resistance testing device for a high-voltage wiring harness of an automobile proposed by the present invention; Figure 4 This is an internal cross-sectional view of a fixed pulley in a wear resistance detection device for a high-voltage wiring harness of an automobile proposed by the present invention; Figure 5 for Figure 4 A schematic diagram of the structure at center A; Figure 6 This is a side sectional view of a fixed pulley in a wear resistance detection device for a high-voltage wiring harness of an automobile proposed by the present invention; Figure 7 This is a partial exploded view of the internal section of a fixed pulley in a wear resistance detection device for a high-voltage wiring harness of an automobile proposed by the present invention; Figure 8 This is a main cross-sectional view of a fixed pulley in a wear resistance detection device for a high-voltage wiring harness of an automobile proposed by the present invention; Figure 9 This is a structural schematic diagram of a telescopic disc in a wear resistance testing device for automotive high-voltage wire harnesses proposed by the present invention.

[0018] In the figure: 1. Operating table; 2. Automobile wiring harness cable to be tested; 3. Optical detection sensor; 4. Fixing ring; 5. Lifting frame; 6. End plate; 7. First electric telescopic rod; 8. Rotating shaft; 9. Fixed pulley; 10. Telescopic rod; 11. Second electric telescopic rod; 12. Bracket; 13. First meshing gear; 14. Second meshing gear; 15. Arc friction plate assembly; 151. First concave arc plate; 152. Second concave arc plate; 153. Third concave arc plate; 16. Slide groove; 17. Slider; 18. Telescopic disc; 19. Groove; 20. Telescopic block; 21. Chamfer; 22. First side groove; 23. Second side groove; 24. Return spring; 25. Built-in cavity; 26. Drive motor. DETAILED DESCRIPTION

[0019] Reference Figures 1-9 A device for detecting wear resistance of an automobile high-voltage wiring harness comprises an operating table 1 and an automobile wiring harness cable 2 to be detected placed on the operating table 1. The operating table 1 is also provided with an optical detection sensor 3 which is sleeved on the outer wall of the automobile wiring harness cable 2 to be detected. It should be noted that the automobile wiring harness cable 2 to be detected is wound by an external winding device. When the automobile wiring harness cable 2 to be detected is simulated by friction by a fixed pulley 9, the external winding device is turned on to allow the friction area to reach the vicinity of the optical detection sensor 3 for detection. The optical detection sensor 3 is a prior art, and the outer skin of the automobile wiring harness cable 2 to be detected is optically inspected by an optical device. Therefore, the optical detection sensor 3 can timely provide data feedback on the state of friction, and then transmit and record data according to the simulation detection method.

[0020] The operating table 1 is provided with a fixed pulley 9 which abuts against the outer side wall of the automobile wiring harness cable 2 to be tested, wherein the fixed pulley 9 contacts and abuts against the outer side wall of the automobile wiring harness cable 2 to be tested. By rotating the fixed pulley 9, friction is generated between the fixed pulley 9 and the outer side wall of the automobile wiring harness cable 2 to be tested, thereby simulating a scenario in which the automobile wiring harness cable 2 to be tested accidentally falls off and drags and slides on the ground, so that simulated friction detection can be performed for such scenarios.

[0021] The automobile wiring harness cable 2 to be tested is fastened to the operating table 1 by two fixing rings 4, and the fixed pulley 9 is located between the two fixing rings 4. In this way, the friction area of ​​the automobile wiring harness cable 2 to be tested located between the fixing rings 4 can be in a stable state during the simulated friction process, providing a fixed friction scene for friction detection.

[0022] The fixed pulley 9 is lifted and slid on the operating platform 1 by the lifting assembly, so that the height of the fixed pulley 9 on the operating platform 1 can be changed by the lifting assembly, thereby simulating the following two states; First, the lifting assembly drives the fixed pulley 9 to always be close to the outer wall of the automotive wiring harness cable 2 to be tested, and then changes the force of the fixed pulley 9 pressing the outer wall of the automotive wiring harness cable 2 to be tested, thereby simulating the degree of friction damage of the fixed pulley 9 on the automotive wiring harness cable 2 to be tested under different pressures during the friction process; Second, the lifting assembly drives the fixed pulley 9 to continuously rise and fall, and then intermittently contacts the outer wall of the automotive wiring harness cable 2 to be tested, thereby simulating the state in which the automotive wiring harness cable 2 to be tested intermittently leaves the ground when encountering bumps during driving.

[0023] Reference Figure 1 In this state, the lifting assembly includes a lifting frame 5, which is provided in two pieces and symmetrically arranged on both sides of the fixed pulley 9. The lifting frames 5 are vertically lifted and lowered on the operating table 1 through the lifting holes. The rotating shaft 8 rotates between the two lifting frames 5. The fixed pulley 9 rotates on the lifting assembly through the rotating shaft 8. The fixed pulley 9 is coaxially fixed with the rotating shaft 8, so the lifting frames 5 provide support for the rotation of the rotating shaft 8.

[0024] The lifting assembly also includes a first electric telescopic rod 7, which is arranged at the bottom of the operating table 1. An end plate 6 is fixed to the bottom of the lifting frame 5, and the output end of the first electric telescopic rod 7 is fixed to the end plate 6. Therefore, after the first electric telescopic rod 7 is turned on, it can drive the lifting frame 5 to rise and fall on the operating table 1, thereby realizing the two simulated states mentioned above.

[0025] The lifting assembly is provided with a driving assembly for driving the fixed pulley 9 to rotate, which is used to provide driving force for the fixed pulley 9. The driving assembly includes a first meshing gear 13 and a second meshing gear 14. The first meshing gear 13 is coaxially fixed with the rotating shaft 8, and the first meshing gear 13 and the second meshing gear 14 are meshed with each other. A driving motor 26 is fixed on one of the lifting frames 5, and the output end of the driving motor 26 is coaxially fixed with the second meshing gear 14. When the driving motor 26 is turned on, the rotating shaft 8 can be driven to rotate on the lifting frame 5 through the mutually meshing first meshing gear 13 and the second meshing gear 14. Therefore, the speed of the driving motor 26 can be adjusted, thereby simulating the friction speed of the towing cable caused by the vehicle speed during driving.

[0026] Reference Figure 4 、 Figure 5 、 Figure 7 and Figure 8As shown, the fixed pulley 9 is provided with an arc-shaped friction plate assembly 15 that slides radially, and the arc-shaped friction plate assembly 15 includes a first concave arc plate 151, a second concave arc plate 152 and a third concave arc plate 153, wherein the first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 are all provided in multiple arrangements, and the first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 all have an arc surface, and the arc surface is adapted to the outer side wall of the automotive wiring harness cable 2 to be tested, so that the first concave arc plate 151 or the second concave arc plate 152 or the third concave arc plate 153 can be selected to contact and rub against the outer side wall of the automotive wiring harness cable 2 to be tested during the downward pressing process of the fixed pulley 9.

[0027] The arc surfaces of the first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 are provided with friction layers with different friction coefficients, and the friction coefficients increase successively. Therefore, the first concave arc plate 151 or the second concave arc plate 152 or the third concave arc plate 153 with different friction coefficients can be selected to simulate the degree of friction for different road conditions, that is, by adjusting the contact friction between the first concave arc plate 151 or the second concave arc plate 152 or the third concave arc plate 153 and the outer wall of the automobile wiring harness cable 2 to be tested, the wear resistance of the automobile wiring harness cable 2 to be tested and the friction road surface can be detected.

[0028] The fixed pulley 9 is provided with a sliding cavity, in which the arc friction plate assembly 15 slides. The first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 are arranged as a group and are arranged in multiple groups on the sliding cavity. Figure 7 and Figure 8 As shown, when the second concave arc plate 152 and the third concave arc plate 153 are retracted, the first concave arc plate 151 is still in the initial position. At this time, the fixed pulley 9 rotates, and the contact surface that rubs against the outer wall of the automobile wiring harness cable 2 to be tested is always the friction layer on the first concave arc plate 151. Therefore, the positions of the first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 can be adjusted, thereby adjusting the friction layers with different friction coefficients.

[0029] A plurality of sliding grooves 16 are radially opened on the sliding cavity, and the first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 all slide radially on the sliding grooves 16 through the slider 17. Therefore, the first concave arc plate 151, the second concave arc plate 152 and the third concave arc plate 153 slide radially in the sliding cavity on the fixed pulley 9 through the slider 17 and the sliding grooves 16, so any two of the first concave arc plate 151, the second concave arc plate 152 or the third concave arc plate 153 can be retracted.

[0030] A push-switch assembly for switching the shape of the arc-shaped friction plate assembly 15 is provided in the rotating shaft 8, thereby enabling switching between a concave arc plate 151, a second concave arc plate 152, or a third concave arc plate 153. A bracket 12 is fixed to the side wall of the lifting frame 5, and a second electric telescopic rod 11 is mounted on the bracket 12. The output end of the second electric telescopic rod 11 is coaxially fixed to the push-switch assembly, wherein the output end of the second electric telescopic rod 11 is fixed to the telescopic rod 10, thereby driving the telescopic rod 10 to slide coaxially with the rotating shaft 8.

[0031] Push the switch assembly includes a telescopic disk 18, refer to Figure 9 In this state, the telescopic disk 18 is coaxially arranged in sequence, and a plurality of grooves 19 are provided on the outer wall of the telescopic disk 18. A telescopic rod 10 fixed to the telescopic disk 18 is coaxially inserted in the built-in cavity 25, wherein the telescopic disk 18 is set in three, and two grooves 19 are set as a group, and are circumferentially arranged on the outer wall of the telescopic disk 18, wherein the radial angle between two adjacent grooves 19 is the same as the angle between two adjacent sliders 17.

[0032] Reference Figure 5 As shown, the push-to-switch assembly includes a telescopic block 20, which is provided in multiple arrangements and is circumferentially arranged on the outer wall of the rotating shaft 8. A built-in cavity 25 is coaxially provided on the rotating shaft 8, and a telescopic cavity connected to the built-in cavity 25 is provided on the rotating shaft 8. Therefore, the telescopic block 20 can telescopically slide in the telescopic cavity to lift the slider 17, and then can lift the first concave arc plate 151 or the second concave arc plate 152 or the third concave arc plate 153 on the slider 17.

[0033] The telescopic cavity is connected to the built-in cavity 25, and the telescopic block 20 is provided with a chamfer 21 on the side facing the built-in cavity 25. This arrangement can ensure that Figure 9 During the extension and retraction process of the telescopic disc 18 in the state, the telescopic block 20 is located in the groove 19 on the telescopic disc 18, wherein the telescopic block 20 is connected to the slider 17, so that the telescopic block 20 can slide radially along the fixed pulley 9 with the slider 17 during the lifting process.

[0034] During the axial sliding of the telescopic disc 18 along the rotating shaft 8, the rear telescopic disc 18 can push the front telescopic block 20, wherein the telescopic block 20 has a chamfer 21, so that the telescopic block 20 can be lifted up, and then the slider 17 at the corresponding position can be lifted up, and finally the corresponding first concave arc plate 151 or the second concave arc plate 152 or the third concave arc plate 153 fixed on the slider 17 to be lifted up are lifted up together.

[0035] The originally lifted slider 17 will fall into the groove 19 on the rear telescopic disk 18. Under the action of the reset spring 24, the telescopic block 20 will slide with the slider 17 and retract into the sliding cavity on the fixed pulley 9, finally realizing the retraction of any two of the first concave arc plate 151, the second concave arc plate 152 or the third concave arc plate 153.

[0036] A first side groove 22 is provided on one side of the telescopic cavity, and a second side groove 23 is provided on the telescopic block 20 facing the first side groove 22. The same return spring 24 is connected between the first side groove 22 and the second side groove 23. This arrangement can ensure that elastic tension is provided for the telescopic block 20 to be extended and retracted, which is convenient for resetting the telescopic block 20. Therefore, after the second electric telescopic rod 11 is turned on, the telescopic rod 10 can be used to extend and retract multiple telescopic plates 18 together, and the slider 17 can be lifted or lowered with the cooperation of the telescopic block 20, thereby realizing the lifting of any one of the first concave arc plate 151, the second concave arc plate 152 or the third concave arc plate 153, and finally realizing the selection of the arc friction plate assembly 15 in the fixed pulley 9.

[0037] The working principle of the present invention is as follows: First, place the automotive wiring harness cable 2 to be tested on the operating table 1, and then fix it with two fixing rings 4. The fixed pulley 9 contacts and abuts against the outer wall of the automotive wiring harness cable 2 to be tested. By rotating the fixed pulley 9, friction is generated between the fixed pulley 9 and the outer wall of the automotive wiring harness cable 2 to be tested, thereby simulating a scenario in which the automotive wiring harness cable 2 to be tested accidentally falls off and drags and slides on the ground.

[0038] The fixed pulley 9 is lifted and slid on the operating table 1 by the lifting assembly, so that the height of the fixed pulley 9 on the operating table 1 can be changed by the lifting assembly. After the first electric telescopic rod 7 is turned on, the amplitude of the lifting frame 5 on the operating table 1 can be driven to rise and fall. One of the functions is that the lifting assembly drives the fixed pulley 9 to always be close to the outer wall of the automobile wiring harness cable 2 to be tested, and then changes the force of the fixed pulley 9 to press the outer wall of the automobile wiring harness cable 2 to be tested, thereby simulating the degree of friction damage of the fixed pulley 9 to the automobile wiring harness cable 2 to be tested under different pressures during the friction process. Another function is that the lifting assembly drives the fixed pulley 9 to rise and fall continuously, and then intermittently contacts the outer wall of the automobile wiring harness cable 2 to be tested, so as to simulate the state in which the automobile wiring harness cable 2 to be tested is intermittently separated from the ground when encountering bumps during driving.

[0039] Then, the drive motor 26 is turned on, which can drive the rotating shaft 8 to rotate on the lifting frame 5 through the mutually meshing first meshing gear 13 and the second meshing gear 14. Therefore, the speed of the drive motor 26 can be adjusted, thereby simulating the friction speed of the towing cable caused by the vehicle speed during driving.

[0040] After the second electric telescopic rod 11 is turned on, the telescopic rod 10 can be used to extend and retract multiple telescopic plates 18 together, and the slider 17 can be lifted or lowered with the cooperation of the telescopic block 20, thereby lifting any one of the first concave arc plate 151, the second concave arc plate 152 or the third concave arc plate 153, and finally realizing the selection of the arc friction plate assembly 15 in the fixed pulley 9.

[0041] Finally, the outer sheath of the automotive wiring harness cable 2 to be inspected is optically inspected by optical equipment, so that the optical detection sensor 3 can timely provide data feedback on the state of friction, and then transmit and record the data according to the simulation detection method.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A wear resistance testing device for automobile high-voltage wire harnesses, comprising an operating table and an automobile wire harness cable to be tested placed on the operating table, and an optical detection sensor sleeved on the outer side wall of the automobile wire harness cable to be tested is further provided on the operating table, characterized in that: A fixed pulley is provided on the operating table, which is against the outer wall of the automobile wiring harness cable to be tested, and the fixed pulley is lifted and slid on the operating table through a lifting assembly. The fixed pulley rotates on the lifting assembly through a rotating shaft. An arc-shaped friction plate assembly that slides radially is provided on the fixed pulley, and a push switching assembly for switching the shape of the arc-shaped friction plate assembly is provided in the rotating shaft. A driving assembly for driving the fixed pulley to rotate is provided on the lifting assembly.

2. The wear resistance detection device for automobile high-voltage wire harness according to claim 1, characterized in that: The automobile wiring harness cable to be tested is fastened and buckled on the operating table through two fixing rings, and the fixed pulley is located between the two fixing rings.

3. The wear resistance detection device for automobile high-voltage wire harness according to claim 1, characterized in that: The lifting assembly includes: There are two lifting frames, which are symmetrically arranged on both sides of the fixed pulley. The lifting frames are lifted vertically on the operating table through the lifting holes, and the rotating shaft rotates between the two lifting frames; The first electric telescopic rod is arranged at the bottom of the operating table, an end plate is fixed to the bottom of the lifting frame, and the output end of the first electric telescopic rod is fixed to the end plate.

4. The wear resistance detection device for automobile high-voltage wire harness according to claim 3, characterized in that: The drive components include: a first meshing gear and a second meshing gear, wherein the first meshing gear is coaxially fixed to the rotating shaft, and the first meshing gear and the second meshing gear are meshed with each other; A driving motor is fixed on one of the lifting frames, and an output end of the driving motor is coaxially fixed with the second meshing gear.

5. The wear resistance detection device for automobile high-voltage wire harness according to claim 3, characterized in that: A bracket is fixed on the side wall of the lifting frame, a second electric telescopic rod is installed on the bracket, and an output end of the second electric telescopic rod is coaxially fixed with the push switching component.

6. The wear resistance detection device for automobile high-voltage wire harness according to claim 1, characterized in that: The arc-shaped friction plate assembly includes a first concave arc plate, a second concave arc plate and a third concave arc plate. A sliding cavity is opened on the fixed pulley. The arc-shaped friction plate assembly slides in the sliding cavity. The first concave arc plate, the second concave arc plate and the third concave arc plate are all provided in multiple configurations. The first concave arc plate, the second concave arc plate and the third concave arc plate all have arc surfaces, and the arc surfaces are adapted to the outer side wall of the automotive wiring harness cable to be tested. The arc surfaces of the first concave arc plate, the second concave arc plate and the third concave arc plate are provided with friction layers with different friction coefficients, and the friction coefficients increase in sequence.

7. The wear resistance detection device for automobile high-voltage wire harness according to claim 6, characterized in that: The first concave arc plate, the second concave arc plate and the third concave arc plate are arranged in a group and are arranged in multiple groups of circles on the sliding cavity. A plurality of sliding grooves are opened radially on the sliding cavity. The first concave arc plate, the second concave arc plate and the third concave arc plate all slide radially on the sliding grooves through sliders.

8. The wear resistance detection device for automobile high-voltage wire harness according to claim 1, characterized in that: Push toggle components include: The telescopic block is provided in multiple pieces and is arranged in a circle on the outer wall of the rotating shaft. A built-in cavity is coaxially provided on the rotating shaft. A telescopic cavity connected to the built-in cavity is provided on the rotating shaft. The telescopic cavity is connected to the built-in cavity, and a chamfer is provided on the side of the telescopic block facing the built-in cavity.

9. The wear resistance detection device for automobile high-voltage wire harness according to claim 8, characterized in that: A first side groove is provided on one side of the telescopic cavity, a second side groove is provided on the side of the telescopic block facing the first side groove, and a same return spring is connected between the first side groove and the second side groove.

10. The wear resistance detection device for automobile high-voltage wire harness according to claim 9, characterized in that: The push toggle component also includes: The telescopic disc is coaxially arranged in sequence. The outer wall of the telescopic disc is provided with multiple grooves. A telescopic rod fixed to the telescopic disc is coaxially inserted in the built-in cavity.

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