Durability detection equipment for new energy automobile wire harness

Abstract

The invention discloses durability detection equipment for a new energy automobile wire harness, and relates to the technical field of wire harness testing, and the durability detection equipment comprises a detection vertical surface which is fixed on a detection workbench; the rotation adjusting device is arranged on the side part of the detection vertical surface in a sliding manner; the multiple guide devices are annularly distributed and fixed to the rotation adjusting device; the two groups of pulling detection devices are symmetrically distributed left and right, are fixed on the rotation adjusting device, and are in sliding connection with the guide device; the two torsion detection devices are symmetrically distributed on the left side and the right side, and the torsion detection devices are arranged on the guide device in a sliding mode and fixed between the pulling detection devices; the wire harness is arranged along the guide device and penetrates through the pulling detection device and the torsion detection device; according to the invention, bending test and tension test can be carried out, the flexibility, torsion resistance and connection reliability of the wire harness can be further tested, and the stability and reliability of the wire harness can be comprehensively evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness testing, and more specifically, to a durability testing device for a wire harness of a new energy vehicle. Background Art

[0002] As the core component of the vehicle electrical system, the wiring harness of new energy vehicles carries the important task of transmitting power and signals. They are the bridge and link for the operation of vehicle electrical components, and their performance is directly related to the stability and reliability of the whole vehicle. With the improvement of the degree of automobile electronics, the electrical system becomes more and more complex, and the role of the wiring harness becomes more and more important. In order to ensure that the wiring harness of new energy vehicles can still operate stably under various harsh environments, it is very important to carry out durability testing. At present, when testing the wiring harness of the vehicle, the tensile test and the bending test are mainly involved. However, when testing, the various parts of the wiring harness of the vehicle cannot be tested in time, the test position is fixed, and the curvature cannot be adjusted as required during the test process, and it is difficult to test repeatedly, and the durability and stability of the wiring harness under specific working conditions cannot be accurately judged, and it is difficult to comprehensively evaluate the stability and reliability of the wiring harness. Therefore, it is necessary to provide a durability detection device for the wiring harness of new energy vehicles to solve the problems raised in the above background technology. Summary of the invention

[0003] To achieve the above object, the present invention provides the following technical solution: a durability testing device for a wiring harness of a new energy vehicle, comprising: The inspection facade is fixed on the inspection workbench; A rotating adjustment device is slidably arranged on the side of the detection facade; A plurality of guide devices are provided in an annular distribution and fixed on the rotation adjustment device; The pulling detection device is provided with two groups symmetrically distributed on the left and right sides, fixed on the rotation adjustment device, and the pulling detection device is slidably connected with the guide device; Two torsion detection devices are symmetrically distributed on the left and right, and the torsion detection devices are slidably arranged on the guide device and fixed between each group of pulling detection devices; The wire harness is arranged along the guide device and passes through the pulling detection device and the twisting detection device.

[0004] Further, preferably, the detection facade comprises: A fixing member is fixed to the side of the detection facade, on the same side as the rotation adjustment device, and the fixing member is fixedly connected to one end of the wiring harness; A moving part is slidably arranged on the side of the detection facade and on the same side as the fixed part, and the moving part is fixedly connected to an end of the wire harness away from the fixed part; An adjusting slideway is arranged in the middle of the detection facade, and the rotating adjusting device is slidably arranged in the adjusting slideway; The pulling slide is arranged on the detection facade and is located obliquely above the adjusting slide, and the moving member is slidably arranged in the pulling slide.

[0005] That is to say, under the action of the fixing part, one end of the wiring harness is fixed, and the wiring harness is wound around the rotating adjustment device, bent along the guide device, and then connected to the movable part, and the position of the rotating adjustment device on the adjusting slide is fixed. Then, the moving part can slide on the pulling slide to tighten the wiring harness, and the wiring harness is tested for tension in the bent state. By adjusting the rotating adjustment device, the change in tension that the wiring harness can withstand under different bending states is tested. By adjusting the position of the rotating adjustment device on the adjusting slide, the bending part of the wiring harness can be switched, and then the change in tension at different positions of the wiring harness in different bending states can be detected.

[0006] Further, as a preference, the rotation adjustment device comprises: A rotating shaft is slidably arranged on an adjusting slideway; Two limiting sleeves are symmetrically arranged and rotatably arranged on the rotating shaft; A plurality of adjusting components are arranged in an annular distribution and fixed on the limiting shaft sleeve.

[0007] That is to say, under the action of the rotating shaft, the rotating adjustment device can be driven to slide on the adjusting slide to switch the bending position of the wiring harness, or the rotating adjustment device can be fixed on the adjusting slide to fix the bending position of the wiring harness for multi-faceted detection. When the moving part pulls the wiring harness, the wiring harness can be driven to move on the rotating adjustment device, and then under the action of the wiring harness, the limiting sleeve is driven to rotate on the rotating shaft through the adjusting assembly, which assists the wiring harness to move quickly and be tightened, while reducing unnecessary wear on the wiring harness when passing through the guide device, affecting the accuracy of subsequent detection.

[0008] Further, as a preference, the adjustment component comprises: Two adjusting vertical plates are symmetrically arranged, the bottoms of which are respectively fixed on corresponding limiting sleeves, and the adjusting vertical plates are provided with adjusting slots; The telescopic shaft is composed of a telescopic outer shaft and a telescopic inner shaft, the bottom of the telescopic outer shaft is fixed to the lower part of the adjustment slot in the adjustment vertical plate, and the top of the telescopic inner shaft is fixedly connected to the bottom of the guide device; A limit spring is sleeved on the telescopic shaft; The electric push rod is fixed on the upper part of the adjusting groove of the adjusting vertical plate, and the push rod of the electric push rod is fixedly connected with the top of the guide device.

[0009] That is to say, when the push rod of the electric push rod pushes the guide device downward and compresses the telescopic shaft and the limit spring, the guide device moves toward the center of the rotating shaft, and the radius of the arc formed by the wiring harness under the restriction of the guide device becomes smaller, and the bending degree of the wiring harness becomes larger; when the push rod of the electric push rod contracts and pulls the guide device upward, driving the telescopic shaft to extend, and the limit spring pops up and resets, the guide device moves away from the rotating shaft, and the radius of the arc formed by the wiring harness under the restriction of the guide device becomes larger, and the bending degree of the wiring harness becomes smaller. It should be noted that the interval adjustment component can also be controlled separately to drive the corresponding guide device to move toward the center of the rotating shaft to separate from the wiring harness, thereby increasing the bending degree of the wiring harness by reducing the support points of the wiring harness.

[0010] Further, as a preference, the guiding device comprises: Two load-bearing horizontal plates are symmetrically arranged and slidably arranged on the front and rear sides of the adjustment vertical plate; A connecting shaft section is fixedly connected to the load-bearing transverse plates on both sides, and the bottom of the connecting shaft section is fixedly connected to the top of the telescopic inner shaft in the telescopic shaft, and the top of the connecting shaft section is fixedly connected to the push rod of the electric push rod; The guide panel is fixed on the top of the bearing horizontal plate and is located between the left and right adjustment vertical plates, and a slide groove is provided in the middle of the guide panel.

[0011] That is to say, when the push rod of the electric push rod is extended, the push rod pushes the connecting shaft section to move downward in the adjusting groove, compresses the telescopic shaft and the limit spring, and at the same time drives the guide panel downward through the load-bearing cross plate, so that the guide panel moves toward the rotating shaft, and the bending degree of the wiring harness becomes larger under the restriction of the guide panel; conversely, when the push rod of the electric push rod is contracted, the push rod pulls the connecting shaft section to move upward in the adjusting groove, pulls the telescopic shaft to extend and reset, and the limit spring pops up and resets, and at the same time drives the guide panel upward through the load-bearing cross plate, so that the guide panel moves away from the rotating shaft, and the bending degree of the wiring harness becomes smaller under the restriction of the guide panel.

[0012] Further, preferably, the pulling detection device comprises: The limiter components are symmetrically arranged in two at the front and rear sides, slidably arranged on the guide device, and fixed at the front and rear sides of the torsion detection device; A connecting piece is arranged corresponding to the limiting assembly, is slidably arranged on the guide device, and is fixedly connected to the limiting assembly; The pushing mechanism is provided with two symmetrically distributed front and rear parts, which are fixed on the top of the bearing cross plate, and the pushing mechanism is provided with a pushing block fixedly connected to the connecting piece.

[0013] That is to say, under the pulling action of the moving part, the wire harness is distributed on the rotating adjustment device along the guide device, and the wire harness passes between the two groups of pulling detection devices. While keeping the moving part fixed and the wire harness in a stable state, the pushing mechanisms of the two groups of pulling detection devices push the limiting components in the same direction through the connecting parts, thereby driving the wire harness to follow the limiting components to move in the direction of the pushing mechanism, and the moving directions of the pushing mechanisms in the pulling detection devices corresponding to adjacent guide devices are opposite, that is, the wire harness is pulled out of position through the pulling detection device, and the wire harness is still in a bent state. The out-of-position pulling of the wire harness in the bent state can effectively reflect the flexibility of the wire harness, and the degree of bending of the wire harness can be adjusted through the rotating adjustment device to detect whether the wire harness can maintain stable performance under different bending degrees and directions.

[0014] Further, as a preference, the limit assembly comprises: A limiting roller is slidably arranged on the guide panel and is located at the side of the slide groove, and a shaft is arranged on the top of the limiting roller; A limiting plate, one end of which is fixed to the upper part of the connecting piece, and the other end of which is rotatably connected to the shaft at the top of the limiting roller; The positioning arc plate is arranged parallel to the limiting plate, one end of which is fixed on the connecting piece, and the other end of which is rotatably connected to the side of the limiting roller.

[0015] That is to say, when the wire harness passes between two sets of pulling detection devices and moves on the guide panel, if the wire harness is offset, the limit roller rotates on the limit plate and the positioning arc plate, and the auxiliary wire harness moves and is tightened under the action of tension. If the wire harness is not offset, the wire harness moves between the limit rollers on both sides; when the pushing mechanism of the two sets of pulling detection devices pushes the limit assembly in the same direction through the connecting piece, the wire harness is driven to move in the direction of the pushing mechanism through the limit roller.

[0016] Further, preferably, the torsion detection device comprises: A connecting plate, the front and rear ends of which are respectively fixedly connected to the inner side of the same group of pulling detection devices; A control frame is fixed to the inner side of the connecting plate and is slidably connected to the guide device, and the control frame is slidably arranged in a slide groove of the guide panel; A locking assembly is rotatably arranged on a side of the control frame away from the connecting plate; Adjust the torsion assembly and fix it at the front and rear ends of the locking assembly.

[0017] That is to say, after the moving part tightens and fixes the wire harness, the corresponding torsion detection device is driven to move toward the center through the pulling detection devices on both sides, thereby driving the two torsion detection devices to be combined into a whole. At the same time, after the control frames are fitted together, the operation of the torsion adjustment component is controlled, and the wire harness is locked and fixed through the locking component. Then, the torsion adjustment component is driven to rotate the wire harness for a torsion test. The corresponding torsion detection devices on adjacent guide devices rotate in opposite directions. Under the adjustment action of the rotation adjustment device, the torsion resistance and connection reliability of the wire harness are evaluated by simulating the torsion conditions that the wire harness may suffer. It should be noted that when the two torsion detection devices are combined together under the action of the pulling detection device, the locking component and the adjusting torsion component are a complete whole.

[0018] Further, as a preference, the locking assembly comprises: A semi-annular surface is rotatably arranged on a side of the control frame away from the connecting plate; A plurality of slide rails are arranged in an arc shape and fixed on the rear side of the semi-circular surface; A semicircular surface is rotatably arranged on a side of the control frame away from the connecting plate, and is rotatably arranged on a side of the slide rail away from the semicircular surface, and an arc-shaped slideway corresponding to the slide rail is arranged on the semicircular surface; A slider is slidably arranged on the slide rail and the arc-shaped slideway; The locking block is fixedly connected to the sliding block, and the locking block and the sliding rail are in the same horizontal plane.

[0019] That is to say, when the pulling detection devices on both sides drive the corresponding torsion detection devices to move toward the center, the locking components on both sides are combined into a whole under the restriction of the control frame, that is, the semi-annular surface and the semicircular surface are complete circles, which can rotate as a whole in the control frame, and then the semi-annular surface is fixed by adjusting the torsion component, and the semicircular surface is rotated forward at the same time, and then under the action of the arc-shaped slide on the semicircular surface, the slider drives the locking block to move toward the position of the wiring harness to lock and fix the wiring harness, and then the semi-annular surface is driven to rotate by adjusting the torsion component, so that the semicircular surface follows the rotation, and then the wiring harness is driven to rotate by itself for a torsion test. After the test is completed, the locking block is detached from the wiring harness and reset by rotating the semicircular surface in the opposite direction.

[0020] Further, as a preference, the adjusting torsion assembly comprises: A semicircular locking gear is rotatably arranged on one side of the control frame close to the rear limit assembly; A semicircular torsion gear is rotatably arranged on a side of the control frame away from the semicircular locking gear, and the semicircular locking gear and the semicircular torsion gear are separately controlled by the control frame; A first semi-arc surface connects the semicircular surface and the semicircular locking gear; The second semi-arc surface connects the semi-annular surface and the semicircular torsion gear.

[0021] That is to say, when the wiring harness is subjected to a torsion test, the locking assemblies on both sides and the adjusting torsion assemblies are combined into a whole under the restriction of the control frame, and then the semicircular torsion gear is fixed to the semi-annular surface through the second semi-arc surface, and at the same time, the semicircular locking gear rotates forward to the semicircular surface through the first semi-arc surface, and then under the action of the arc-shaped slide on the semicircular surface, the slider drives the locking block to move toward the position of the wiring harness to lock and fix the wiring harness, and then the control frame controls the semicircular torsion gear to drive the semi-annular surface to rotate through the second semi-arc surface, and the semicircular surface is followed by the rotation through the semicircular locking gear, thereby driving the wiring harness to rotate, and performing a torsion test. After the test is completed, the locking block is disengaged from the wiring harness and reset by rotating in the opposite direction through the semicircular surface.

[0022] Compared with the prior art, the present invention has the following beneficial effects: The present invention adjusts the detection position of the wire harness in cooperation with the detection vertical surface by setting a rotation adjustment device, so as to conduct a comprehensive detection of the wire harness; adjusts the curvature of the wire harness in cooperation with the adjustment component by setting a guide device, conducts a bending test on the wire harness, and simultaneously conducts a tension test under the pulling of a moving part; pulls the wire harness in a dislocated manner when the wire harness is in a bent state by setting a pulling detection device, so as to further test the flexibility of the wire harness; and simulates the torsion condition when the wire harness is in a bent state by setting a torsion detection device, so as to evaluate the torsion resistance and connection reliability of the wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the overall structure of a durability testing device for wiring harnesses of new energy vehicles; Figure 2 It is a structural schematic diagram of a rotation adjustment device used in a durability testing device for wiring harnesses of new energy vehicles; Figure 3 It is a structural schematic diagram of an adjustment component in a durability testing device for wiring harnesses of new energy vehicles; Figure 4 It is a structural schematic diagram of a pulling detection device in a durability detection device for a wiring harness of a new energy vehicle; Figure 5 It is a structural schematic diagram of a limit assembly in a durability testing device for wiring harnesses of new energy vehicles; Figure 6 A top view of a torsion detection component in a durability detection device for a wiring harness of a new energy vehicle; Figure 7 It is a schematic diagram of the front structure of a torsion detection component in a durability detection device for a wiring harness of a new energy vehicle; Figure 8 It is a schematic diagram of the rear structure of a torsion detection component in a durability detection device for a wiring harness of a new energy vehicle; In the figure: 1. detection facade; 2. rotation adjustment device; 3. guide device; 4. pulling detection device; 5. torsion detection device; 6. wiring harness; 11. fixing member; 12. moving member; 13. adjusting slide; 14. pulling slide; 21. rotating shaft; 22. limiting sleeve; 23. adjusting assembly; 31. bearing cross plate; 32. connecting shaft section; 33. guide panel; 34. slide; 41. limiting assembly; 42. connecting member; 43. pushing mechanism; 51. connecting plate; 52. control frame; 53. Locking assembly; 54. Adjusting and torsion assembly; 231. Adjusting vertical plate; 232. Telescopic shaft; 233. Limiting spring; 234. Electric push rod; 411. Limiting roller; 412. Limiting plate; 413. Positioning arc plate; 531. Semi-annular surface; 532. Slide rail; 533. Semicircular surface; 534. Arc slideway; 535. Sliding block; 536. Locking block; 541. Semicircular locking gear; 542. Semicircular torsion gear; 543. First semi-arc surface; 544. Second semi-arc surface. DETAILED DESCRIPTION

[0024] See also Figures 1 to 8 In an embodiment of the present invention, a durability testing device for a wiring harness of a new energy vehicle includes: Testing facade 1, fixed on the testing workbench; A rotating adjustment device 2 is slidably arranged on the side of the detection facade 1; A plurality of guide devices 3 are provided in an annular distribution and fixed on the rotation adjustment device 2; The pulling detection device 4 is provided with two groups symmetrically distributed on the left and right sides, fixed on the rotation adjustment device 2, and the pulling detection device 4 is slidably connected with the guide device 3; Two torsion detection devices 5 are symmetrically distributed on the left and right. The torsion detection devices 5 are slidably arranged on the guide device 3 and fixed between each group of pulling detection devices 4; The wire harness 6 is arranged along the guide device 3 and passes through the pulling detection device 4 and the twisting detection device 5 .

[0025] In this embodiment, the detection facade 1 includes: A fixing member 11 is fixed to the side of the detection facade 1, on the same side as the rotation adjustment device 2, and the fixing member 11 is fixedly connected to one end of the wiring harness 6; A moving member 12 is slidably disposed on the side of the detection facade 1 and on the same side as the fixing member 11, and the moving member 12 is fixedly connected to an end of the wiring harness 6 away from the fixing member 11; An adjusting slideway 13 is arranged in the middle of the detection facade 1, and the rotating adjusting device 2 is slidably arranged in the adjusting slideway 13; The pulling slide 14 is arranged on the detection facade 1 and is located obliquely above the adjusting slide 13 , and the moving member 12 is slidably arranged in the pulling slide 14 .

[0026] That is to say, under the action of the fixing part 11, one end of the wire harness 6 is fixed, and the wire harness 6 is wound around the rotating adjustment device 2, bent along the guide device 3, and then connected to the movable part 12, and the position of the rotating adjustment device 2 on the adjusting slide 13 is fixed, and then the movable part 12 can slide on the pulling slide 14 to tighten the wire harness 6, and perform a tension test on the wire harness 6 in the bent state. By adjusting the rotating adjustment device 2, the change in tension that the wire harness 6 can withstand under different bending states is tested, and the position of the rotating adjustment device 2 on the adjusting slide 13 can be adjusted to switch the bending part of the wire harness 6, and then the change in tension experienced by different positions of the wire harness 6 in different bending states can be detected.

[0027] In this embodiment, the rotation adjustment device 2 includes: The rotating shaft 21 is slidably arranged on the adjusting slideway 13; The limiting sleeves 22 are symmetrically arranged with two sleeves, and are rotatably arranged on the rotating shaft 21; A plurality of adjusting components 23 are provided in an annular arrangement and are fixed on the limiting sleeve 22 .

[0028] That is to say, under the action of the rotating shaft 21, the rotating adjusting device 2 can be driven to slide on the adjusting slide 13 to switch the bending position of the wiring harness 6, or the rotating adjusting device 2 can be fixed on the adjusting slide 13, and the bending position of the fixed wiring harness 6 can be tested in multiple aspects. When the moving part 12 pulls the wiring harness 6, the wiring harness 6 can be driven to move on the rotating adjusting device 2, and then under the action of the wiring harness 6, the limiting sleeve 22 is driven to rotate on the rotating shaft 21 through the adjusting component 23, which assists the wiring harness 6 to move and tighten quickly, while reducing unnecessary wear of the wiring harness 6 when passing through the guide device 3, affecting the accuracy of subsequent detection.

[0029] In this embodiment, the adjustment component 23 includes: Two adjusting plates 231 are symmetrically arranged, and the bottoms are respectively fixed on the corresponding limiting sleeves 22, and the adjusting plates 231 are provided with adjusting slots; The telescopic shaft 232 is composed of a telescopic outer shaft and a telescopic inner shaft, the bottom of the telescopic outer shaft is fixed to the lower part of the adjustment slot in the adjustment vertical plate 231, and the top of the telescopic inner shaft is fixedly connected to the bottom of the guide device 3; The limit spring 233 is sleeved on the telescopic shaft 232; The electric push rod 234 is fixed to the upper part of the adjustment slot of the adjustment vertical plate 231 , and the push rod of the electric push rod 234 is fixedly connected to the top of the guide device 3 .

[0030] That is to say, when the push rod of the electric push rod 234 pushes the guide device 3 to move downward and compresses the telescopic shaft 232 and the limit spring 233, the guide device 3 moves toward the rotating shaft 21, and the radius of the arc formed by the wiring harness 6 under the restriction of the guide device 3 becomes smaller, and the bending degree of the wiring harness 6 becomes larger; when the push rod of the electric push rod 234 contracts and pulls the guide device 3 to move upward, the telescopic shaft 232 is extended, and the limit spring 233 pops up and resets. At this time, the guide device 3 moves away from the rotating shaft 21, and the radius of the arc formed by the wiring harness 6 under the restriction of the guide device 3 becomes larger, and the bending degree of the wiring harness 6 becomes smaller. It should be noted that the interval adjustment component 23 can also be controlled separately to drive the corresponding guide device 3 to move toward the center of the rotating shaft 21 to separate from the wiring harness 6, thereby increasing the bending degree of the wiring harness 6 by reducing the support points of the wiring harness 6.

[0031] In this embodiment, Figure 4 As shown, the guiding device 3 comprises: The bearing transverse plates 31 are symmetrically arranged with two of them, and are slidably arranged on the front and rear sides of the adjusting vertical plate 231; A connecting shaft section 32 is fixedly connected to the load-bearing horizontal plates 31 on both sides, and the bottom of the connecting shaft section 32 is fixedly connected to the top of the telescopic inner shaft in the telescopic shaft 232, and the top of the connecting shaft section 32 is fixedly connected to the push rod of the electric push rod 234; The guide panel 33 is fixed on the top of the bearing horizontal plate 31 and is located between the left and right adjustment vertical plates 231 . A sliding groove 34 is provided in the middle of the guide panel 33 .

[0032] That is to say, when the push rod of the electric push rod 234 is extended, the push rod pushes the connecting shaft section 32 to move downward in the adjusting groove, compresses the telescopic shaft 232 and the limit spring 233, and at the same time drives the guide panel 33 to move downward through the bearing cross plate 31, so that the guide panel 33 moves toward the rotating shaft 21, and the bending degree of the wiring harness 6 becomes larger under the restriction of the guide panel 33; on the contrary, when the push rod of the electric push rod 234 is contracted, the push rod pulls the connecting shaft section 32 to move upward in the adjusting groove, pulls the telescopic shaft 232 to extend and reset, and the limit spring 233 pops up and resets, and at the same time drives the guide panel 33 to move upward through the bearing cross plate 31, so that the guide panel 33 moves away from the rotating shaft 21, and the bending degree of the wiring harness 6 becomes smaller under the restriction of the guide panel 33.

[0033] In this embodiment, Figure 4-Figure 5 As shown, the pulling detection device 4 includes: The limiter components 41 are symmetrically arranged in two at the front and rear sides, slidably arranged on the guide device 3, and fixed at the front and rear sides of the torsion detection device 5; The connecting member 42 is arranged corresponding to the limiting assembly 41, is slidably arranged on the guide device 3, and is fixedly connected to the limiting assembly 41; Two pushing mechanisms 43 are symmetrically distributed front and back and fixed on the top of the bearing cross plate 31 , and a pushing block fixedly connected to the connecting member 42 is provided on the pushing mechanism 43 .

[0034] That is to say, under the pulling action of the movable part 12, the wire harness 6 is distributed on the rotating adjustment device 2 along the guide device 3, and the wire harness 6 passes between the two groups of pulling detection devices 4. While keeping the movable part 12 fixed and the wire harness 6 in a stable state, the pushing mechanism 43 of the two groups of pulling detection devices 4 pushes the limiting component 41 in the same direction through the connecting part 42, thereby driving the wire harness 6 to follow the limiting component 41 to move in the direction of the pushing mechanism 43, and the moving directions of the pushing mechanisms 43 in the pulling detection devices 4 corresponding to the adjacent guiding devices 3 are opposite, that is, the wire harness 6 is pulled in an offset manner by the pulling detection device 4, and the wire harness 6 is still in a bent state. The offset pulling of the wire harness 6 in the bent state can effectively reflect the flexibility of the wire harness 6, and the bending degree of the wire harness 6 can be adjusted by the rotating adjustment device 2 to detect whether the wire harness 6 can maintain stable performance under different bending degrees and directions.

[0035] In this embodiment, the limiting component 41 includes: A limiting roller 411 is slidably disposed on the guide panel 33 and is located at the side of the slide groove 34, and a shaft is disposed at the top of the limiting roller 411; The limiting plate 412 has one end fixed to the upper part of the connecting member 42 and the other end rotatably connected to the shaft at the top of the limiting roller 411; The positioning arc plate 413 is arranged parallel to the limiting plate 412 , one end of which is fixed on the connecting member 42 , and the other end of which is rotatably connected to the side of the limiting roller 411 .

[0036] That is to say, when the wire harness 6 passes between the two sets of pulling detection devices 4 and moves on the guide panel 33, if the wire harness 6 is offset, the limiting roller 411 rotates on the limiting plate 412 and the positioning arc plate 413, and the auxiliary wire harness 6 moves and is tightened under the action of the pulling force. If the wire harness 6 is not offset, the wire harness 6 moves between the limiting rollers 411 on both sides; when the pushing mechanism 43 of the two sets of pulling detection devices 4 pushes the limiting assembly 41 in the same direction through the connecting piece 42, the wire harness 6 is driven to move in the direction of the pushing mechanism 43 through the limiting roller 411.

[0037] In this embodiment, the torsion detection device 5 includes: The connecting plate 51 has its front and rear ends fixedly connected to the inner side of the same group of pulling detection devices 4; The control frame 52 is fixed to the inner side of the connecting plate 51 and is slidably connected to the guide device 3. The control frame 52 is slidably arranged in the slide groove 34 of the guide panel 33. A locking assembly 53 is rotatably disposed on a side of the control frame 52 away from the connecting plate 51; The adjusting torsion assembly 54 is fixed at the front and rear ends of the locking assembly 53 .

[0038] That is to say, after the moving part 12 tightens and fixes the wiring harness 6, the corresponding torsion detection device 5 is driven to move toward the center through the pulling detection device 4 on both sides, thereby driving the two torsion detection devices 5 to be combined into a whole. At the same time, after the control frames 52 are fitted together, the torsion adjustment component 54 is controlled to operate, and the wiring harness 6 is locked and fixed through the locking component 53. Then, the torsion adjustment component 54 is used to drive the wiring harness 6 to rotate for a torsion test. The corresponding torsion detection devices 5 on the adjacent guide devices 3 rotate in opposite directions. Under the adjustment action of the rotation adjustment device 2, the torsion resistance and connection reliability of the wiring harness 6 are evaluated by simulating the torsion conditions that the wiring harness 6 may suffer. It should be noted that when the two torsion detection devices 5 are combined together under the action of the pulling detection device 4, the locking component 53 and the torsion adjustment component 54 are a complete whole.

[0039] In this embodiment, the locking assembly 53 includes: A semi-annular surface 531 is rotatably disposed on a side of the control frame 52 away from the connecting plate 51; A plurality of slide rails 532 are provided in an arc shape and fixed to the rear side of the semi-annular surface 531; A semicircular surface 533 is rotatably disposed on a side of the control frame 52 away from the connecting plate 51 and is rotatably disposed on a side of the slide rail 532 away from the semicircular surface 531 , and an arc-shaped slideway 534 corresponding to the slide rail 532 is disposed on the semicircular surface 533 ; A slider 535 is slidably disposed on the slide rail 532 and the arc-shaped slideway 534; The locking block 536 is fixedly connected to the sliding block 535 , and the locking block 536 and the sliding rail 532 are in the same horizontal plane.

[0040] That is to say, when the pulling detection devices 4 on both sides drive the corresponding torsion detection devices 5 to move toward the center, the locking components 53 on both sides are combined into a whole under the restriction of the control frame 52, that is, the semi-annular surface 531 and the semicircular surface 533 are complete circles, which can rotate as a whole in the control frame 52, and then the semi-annular surface 531 is fixed by adjusting the torsion component 54, and the semicircular surface 533 is rotated forward at the same time, and then under the action of the arc slide 534 on the semicircular surface 533, the slider 535 drives the locking block 536 to move toward the position of the wiring harness 6 to lock and fix the wiring harness 6, and then the semi-annular surface 531 is driven to rotate by adjusting the torsion component 54, so that the semicircular surface 533 follows the rotation, and then the wiring harness 6 is driven to rotate, and a torsion test is performed. After the test is completed, the semicircular surface 533 is rotated in the opposite direction to make the locking block 536 detach from the wiring harness 6 and reset.

[0041] In this embodiment, the adjusting and twisting component 54 includes: A semicircular locking gear 541 is rotatably disposed on one side of the control frame 52 close to the rear limit assembly 41; A semicircular torsion gear 542 is rotatably arranged on a side of the control frame 52 away from the semicircular locking gear 541, and the semicircular locking gear 541 and the semicircular torsion gear 542 are separately controlled by the control frame 52; A first semi-arc surface 543 connecting the semicircular surface 533 and the semicircular locking gear 541; The second semi-arc surface 544 connects the semi-annular surface 531 and the semi-circular torsion gear 542 .

[0042] That is to say, when the wiring harness 6 is subjected to a torsion test, the locking assemblies 53 on both sides and the adjusting torsion assemblies 54 are combined into a whole under the restriction of the control frame 52, and then the semicircular torsion gear 542 fixes the semi-annular surface 531 through the second semi-arc surface 544, and at the same time, the semicircular locking gear 541 rotates the semicircular surface 533 forward through the first semi-arc surface 543, and then under the action of the arc slide 534 on the semicircular surface 533, the slider 535 drives the locking block 536 to move toward the position of the wiring harness 6 to lock and fix the wiring harness 6, and then the control frame 52 controls the semicircular torsion gear 542 to drive the semi-annular surface 531 to rotate through the second semi-arc surface 544, and makes the semicircular surface 533 follow the rotation through the semicircular locking gear 541, thereby driving the wiring harness 6 to rotate and perform a torsion test. After the test is completed, the semicircular surface 533 rotates in the opposite direction to make the locking block 536 detach from the wiring harness 6 and reset.

[0043] In the specific implementation, the wire harness 6 is firstly wound around the rotating adjustment device 2 by the fixing member 11 and the moving member 12, so that the wire harness 6 is in a bent state, and the wire harness 6 can be subjected to a tension test in the bent state, and the rotating adjustment device 2 is adjusted in position by adjusting the slide 13, and the bending part of the wire harness 6 is switched, and the guide device 3 is driven to move on the adjusting vertical plate 231 by the adjusting component 23 to adjust the bending degree of the wire harness 6. After determining the bending position and bending degree of the wire harness 6, a flexibility test is then carried out, and the pushing mechanism of the two sets of pulling detection devices 4 is 43 pushes the limiting assembly 41 in the same direction through the connecting piece 42, thereby driving the wire harness 6 to move in the direction of the moving of the pushing mechanism 43 following the limiting roller 411, and the moving direction of the pushing mechanism 43 in the pulling detection device 4 corresponding to the adjacent guide device 3 is opposite, that is, the wire harness 6 is pulled out of position through the pulling detection device 4, and the wire harness 6 is still in a bent state. The pulling out of position of the wire harness 6 in the bent state can effectively reflect the flexibility of the wire harness 6, and then a torsion test is performed, and the pulling detection devices 4 on both sides drive the corresponding torsion detection The device 5 moves toward the center, thereby driving the two torsion detection devices 5 to be combined into a whole. At the same time, after the control frames 52 are attached to each other, the control frame 52 controls the semicircular torsion gear 542 to fix the semi-circular surface 531 through the second semi-arc surface 544, and at the same time, the semicircular locking gear 541 rotates the semicircular surface 533 positively through the first semi-arc surface 543. Then, under the action of the arc slide 534 on the semicircular surface 533, the slider 535 drives the locking block 536 to move to the position of the wiring harness 6 to lock and fix the wiring harness 6. Then the control frame 52 controls The semicircular torsion gear 542 drives the semi-annular surface 531 to rotate through the second semi-arc surface 544, and makes the semicircular surface 533 follow the rotation through the semicircular locking gear 541, thereby driving the wiring harness 6 to rotate, and performing a torsion test. The corresponding torsion detection device 5 on the adjacent guide device 3 rotates in the opposite direction. After the test is completed, the locking block 536 is disengaged from the wiring harness 6 and reset by rotating in the opposite direction through the semicircular surface 533. Through various testing methods, the durability and stability of the wiring harness 6 under specific working conditions can be accurately judged, and the stability and reliability of the wiring harness 6 can be comprehensively evaluated.

[0044] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A durability testing device for new energy vehicle wiring harness, characterized in that: include: A testing facade (1) is fixed on a testing workbench; A rotating adjustment device (2) is slidably arranged on a side of the detection facade (1); A plurality of guide devices (3) are provided in an annular distribution and are fixed on the rotation adjustment device (2); The pulling detection device (4) is provided with two groups symmetrically distributed on the left and right, fixed on the rotation adjustment device (2), and the pulling detection device (4) is slidably connected to the guide device (3); Two torsion detection devices (5) are symmetrically distributed on the left and right, and the torsion detection devices (5) are slidably arranged on the guide device (3) and fixed between each group of pulling detection devices (4); A wire harness (6) is arranged along the guide device (3) and passes through the pulling detection device (4) and the torsion detection device (5); The pulling detection device (4) comprises: Two limiter assemblies (41) are symmetrically arranged in the front and rear directions, slidably arranged on the guide device (3), and fixed on the front and rear sides of the torsion detection device (5); A connecting member (42) is arranged corresponding to the limiting assembly (41), is slidably arranged on the guide device (3), and is fixedly connected to the limiting assembly (41); Two pushing mechanisms (43) are symmetrically distributed front and back and fixed on the top of the bearing cross plate (31), and the pushing mechanism (43) is provided with a pushing block fixedly connected to the connecting member (42); The torsion detection device (5) comprises: A connecting plate (51), the front and rear ends of which are respectively fixedly connected to the inner side of the same group of pulling detection devices (4); A control frame (52) is fixed to the inner side of the connecting plate (51) and is slidably connected to the guide device (3); A locking assembly (53) rotatably disposed on a side of the control frame (52) away from the connecting plate (51); The adjusting and twisting assembly (54) is fixed to the front and rear ends of the locking assembly (53).

2. The durability testing device for wiring harness of new energy vehicles according to claim 1 is characterized in that: The detection facade (1) comprises: A fixing member (11) is fixed to a side of the detection facade (1) and on the same side as the rotation adjustment device (2), and the fixing member (11) is fixedly connected to one end of the wiring harness (6); A movable member (12) is slidably disposed on a side of the detection facade (1) and on the same side as the fixed member (11), and the movable member (12) is fixedly connected to an end of the wiring harness (6) away from the fixed member (11); An adjustment slideway (13) is arranged in the middle of the detection facade (1), and the rotation adjustment device (2) is slidably arranged in the adjustment slideway (13); The pulling slide (14) is arranged on the detection facade (1) and is located obliquely above the adjusting slide (13), and the moving member (12) is slidably arranged in the pulling slide (14).

3. The durability testing device for wiring harness of new energy vehicles according to claim 2 is characterized in that: The rotation adjustment device (2) comprises: A rotating shaft (21) slidably disposed on the adjusting slideway (13); Two limiting sleeves (22) are symmetrically arranged and rotatably arranged on the rotating shaft (21); A plurality of adjusting components (23) are provided in an annular arrangement and are fixed on the limiting shaft sleeve (22).

4. The durability testing device for the wiring harness of a new energy vehicle according to claim 3 is characterized in that: The regulating component (23) comprises: Two adjusting upright plates (231) are symmetrically arranged, the bottoms of which are respectively fixed on corresponding limiting sleeves (22), and the adjusting upright plates (231) are provided with adjusting grooves; The telescopic shaft (232) is composed of a telescopic outer shaft and a telescopic inner shaft, the bottom of the telescopic outer shaft is fixed to the lower part of the adjustment slot in the adjustment vertical plate (231), and the top of the telescopic inner shaft is fixedly connected to the bottom of the guide device (3); A limit spring (233) is sleeved on the telescopic shaft (232); The electric push rod (234) is fixed to the upper part of the adjustment slot of the adjustment vertical plate (231), and the push rod of the electric push rod (234) is fixedly connected to the top of the guide device (3).

5. The durability testing device for the wiring harness of new energy vehicles according to claim 4 is characterized in that: The guiding device (3) comprises: Two bearing transverse plates (31) are symmetrically arranged and slidably arranged on the front and rear sides of the adjusting vertical plate (231); A connecting shaft section (32) is fixedly connected to the load-bearing transverse plates (31) on both sides, and the bottom of the connecting shaft section (32) is fixedly connected to the top of the telescopic inner shaft in the telescopic shaft (232), and the top of the connecting shaft section (32) is fixedly connected to the push rod of the electric push rod (234); The guide panel (33) is fixed on the top of the bearing horizontal plate (31) and is located between the left and right adjustment vertical plates (231), and a slide groove (34) is provided in the middle of the guide panel (33).

6. The durability testing device for wiring harness of new energy vehicles according to claim 1, characterized in that: The limiting component (41) comprises: A limiting roller (411) is slidably disposed on the guide panel (33) and is located on the side of the slide groove (34), and a shaft is provided on the top of the limiting roller (411); A limiting plate (412), one end of which is fixed to the upper part of the connecting member (42), and the other end of which is rotatably connected to the shaft at the top of the limiting roller (411); The positioning arc plate (413) is arranged parallel to the limiting plate (412), one end of which is fixed on the connecting member (42) and the other end of which is rotatably connected to the side of the limiting roller (411).

7. The durability testing device for wiring harness of new energy vehicles according to claim 1 is characterized in that: The control frame (52) is slidably disposed in the slide groove (34) of the guide panel (33).

8. The durability testing device for the wiring harness of new energy vehicles according to claim 7 is characterized in that: The locking assembly (53) comprises: A semi-annular surface (531) is rotatably disposed on a side of the control frame (52) away from the connecting plate (51); A plurality of slide rails (532) are provided in an arc-shaped distribution and are fixed to the rear side surface of the semi-annular surface (531); A semicircular surface (533) is rotatably disposed on a side of the control frame (52) away from the connecting plate (51), and is rotatably disposed on a side of the slide rail (532) away from the semicircular surface (531), wherein an arc-shaped slideway (534) corresponding to the slide rail (532) is provided on the semicircular surface (533); A slider (535) is slidably disposed on the slide rail (532) and the arc-shaped slideway (534); The locking block (536) is fixedly connected to the sliding block (535), and the locking block (536) and the sliding rail (532) are located on the same horizontal plane.

9. The durability testing device for the wiring harness of new energy vehicles according to claim 8, characterized in that: The adjusting torsion assembly (54) comprises: A semicircular locking gear (541) is rotatably arranged on a side of the control frame (52) close to the rear limit assembly (41); A semicircular torsion gear (542) is rotatably arranged on a side of the control frame (52) away from the semicircular locking gear (541), and the semicircular locking gear (541) and the semicircular torsion gear (542) are individually controlled by the control frame (52); A first semi-arc surface (543) connecting the semicircular surface (533) and the semicircular locking gear (541); The second semi-arc surface (544) connects the semi-annular surface (531) and the semi-circular torsion gear (542).

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