New energy automobile wire harness testing device

Abstract

The invention relates to the technical field of automobile wire harness testing, in particular to a new energy automobile wire harness testing device which comprises two fixed connector lugs symmetrically connected to the top end of a box body in a sliding mode, and an automobile wire harness temperature detection mechanism is arranged in the middle of the top end of the box body. The automobile wire harness temperature detection mechanism comprises a fixing frame horizontally and slidably connected to the middle of the top end of the box body, at least two shape memory alloys are relatively and slidably connected to an inner cavity of the fixing frame, and an arc-shaped heat transfer plate abutting against an automobile wire harness is fixedly installed on the side, close to the circle center of the fixing frame, of each shape memory alloy. A marking assembly is further arranged in an inner cavity of the fixing frame. According to the invention, the surface temperature of the automobile wire harness is detected before the automobile wire harness is tested, so that the equipment can accurately determine the fault position of the automobile wire harness, the whole circumferential surface of the automobile wire harness does not need to be comprehensively tested during subsequent testing, the labor burden of workers is reduced, and the device is convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile wiring harness testing, and in particular to a new energy automobile wiring harness testing device. Background Art

[0002] New energy vehicle wiring harness is an important part of new energy vehicles. It needs to meet the requirements of high voltage, high current, high integration, high reliability and high safety. With the continuous development of new energy vehicle technology, new energy vehicle wiring harness will also develop in the direction of being smarter, lighter and more reliable.

[0003] In the prior art, there is a utility model patent with a publication (announcement) number of CN216209257U and a name of a new energy vehicle whole vehicle wiring harness test equipment, which includes a tester and several detection heads on the front side of the tester, and fixed columns are fixedly installed on the front side of the tester and below the several detection heads. Two semicircular rings are installed above the several fixed columns and in front of the corresponding detection heads. Semicircular rubber rings are fixedly installed on the inner walls of the two semicircular rings. The bottoms of the two semicircular rings are rotatably installed with the corresponding fixed columns through a rotating assembly. A bottom plate is fixedly installed on the front side of the tester and below the several fixed columns; in the utility model, the coordination between the semicircular rings, semicircular rubber rings, rotating assemblies, fixed assemblies, storage grooves and winding columns is provided to solve the problem that the whole vehicle wiring harness is easily confused together, and one end of the wiring harness is also easy to fall off from the detection head of the instrument, affecting the speed of the whole vehicle wiring harness test.

[0004] The device of this patent can prevent one end of the wiring harness from falling off from the detection head of the instrument, affecting the speed of the vehicle wiring harness test; however, the device of this patent still has the following technical defects during use: (1) High temperature will cause the resistance of the wire to increase, affecting the current transmission efficiency; by detecting the temperature of the automobile wiring harness, the changes in electrical performance can be monitored to ensure the normal operation of the circuit; and in a high temperature environment, the shielding layer performance of the automobile wiring harness will deteriorate, which may cause signal interference and data transmission errors. Temperature detection can help identify these problems. However, the device of this patent does not detect the temperature of the automobile wiring harness before testing it, which means that the device needs to conduct a comprehensive test on the entire circumference of the automobile wiring harness when testing the automobile wiring harness, thereby increasing the labor burden of the staff and making it inconvenient to use; (2) The existing equipment does not promptly mark the location of the problem after the automobile wiring harness is tested, which makes it inconvenient for the staff to maintain it in time, thereby causing certain inconveniences for the staff. Summary of the invention

[0005] The purpose of the present invention is to provide a new energy vehicle wiring harness testing device.

[0006] The technical problems solved by the present invention are: (1) the existing equipment does not detect the surface temperature of the wiring harness before testing it, which results in the need to conduct a comprehensive test on it during testing, which easily increases the workload of the staff; (2) the existing equipment does not promptly mark the location where the problem occurs after the test of the automobile wiring harness is completed, which makes it inconvenient for the staff to maintain it in time.

[0007] The present invention can be implemented by the following technical scheme: a new energy automobile wiring harness testing device, comprising two fixed wiring heads symmetrically slidably connected to the top of a box body, an automobile wiring harness temperature detection mechanism is arranged in the middle of the top of the box body, the automobile wiring harness temperature detection mechanism comprises a fixed frame horizontally slidably connected to the middle of the top of the box body, at least two shape memory alloys are relatively slidably connected to the inner cavity of the fixed frame, and an arc-shaped heat transfer plate abutting against the automobile wiring harness is fixedly installed on one side of the shape memory alloy close to the center of the fixed frame;

[0008] The inner cavity of the fixed frame is also provided with a marking component, which includes a marking liquid containing tank arranged in the inner cavity of the fixed frame and corresponding to the shape memory alloy. A blocking bead that moves synchronously with the shape memory alloy is slidably connected at the discharge port of the marking liquid containing tank, and the blocking bead slides through the deformation of the shape memory alloy.

[0009] A further technical improvement of the present invention is that the inner cavity of the fixed frame is also provided with a rotating assembly for rotating the two arcuate heat transfer plates. The rotating assembly includes a circular ring frame rotatably connected to the inner cavity of the fixed frame. The rotating circular ring frame causes the two arcuate heat transfer plates to rotate synchronously.

[0010] A further technical improvement of the present invention is that: the inner cavity of the circular ring frame is provided with a driving component that enables the two shape memory alloys to move relative to each other, and the driving component includes a circular ring plate fixedly connected to the inner cavity of the circular ring frame, one side of the circular ring plate is rotatably connected to an inner gear ring, one side of the circular ring plate is rotatably connected to at least two interlocking gears meshing with the inner gear ring, the side of the inner gear ring away from the circular ring plate is slidably connected to a rack meshing with the interlocking gears, one end of the rack is fixedly connected to an arc-shaped mounting plate, and the arc-shaped mounting plate is fixedly connected to the shape memory alloy.

[0011] A further technical improvement of the present invention is that a rotating member for driving the inner gear ring to rotate is provided on one side of the circular ring plate, the rotating member includes an outer gear ring rotatably connected to one side of the circular ring plate, the outer gear ring is fixedly connected to the inner gear ring, and one side of the circular ring plate is rotatably connected to a driving gear meshing with the outer gear ring. The rotating driving gear rotates the outer gear ring through meshing, thereby driving the inner gear ring to rotate. Here, the driving gear is driven to rotate by a driving motor.

[0012] A further technical improvement of the present invention is that the inner cavity of the fixed frame is provided with an oblique-mouthed tube connected to the discharge port of the marking liquid containing tank, the oblique-mouthed tube is fixedly connected to the arc-shaped mounting plate, and the movement of the arc-shaped mounting plate drives the oblique-mouthed tube to move synchronously. The oblique-mouthed tube is preferably a hose, and the setting of the hose facilitates better synchronous movement with the arc-shaped mounting plate.

[0013] A further technical improvement of the present invention is that the inner cavity of the marking liquid holding tank is provided with a control member for controlling the sliding of the blocking bead, the control member includes an outer sleeve fixed to the inner cavity of the marking liquid holding tank, the inner cavity of the outer sleeve is elastically and slidingly connected to an inner sleeve fixedly connected to the blocking bead, the inner cavity of the outer sleeve is also fixedly installed with a first electromagnetic block, the inner cavity of the inner sleeve is fixedly installed with a second electromagnetic block with opposite magnetic properties to the first electromagnetic block, and the first electromagnetic block and the second electromagnetic block attract each other when power is on.

[0014] A further technical improvement of the present invention lies in that two detection rods are symmetrically fixedly installed on one side of the arc-shaped heat transfer plate away from the automobile wiring harness, and a trigger switch corresponding to the detection rod is fixedly installed on one side of the arc-shaped mounting plate. The first electromagnetic block and the second electromagnetic block are electrically connected to the trigger switch. The trigger switch briefly connects the power supply of the first electromagnetic block and the second electromagnetic block through the contact between the detection rod and the trigger switch, and then the blocking bead slides through the magnetic attraction between the two, and the blocking bead is reset after the quantitative marking liquid flows out.

[0015] A further technical improvement of the present invention is that an auxiliary heat dissipation component is also provided in the inner cavity of the circular ring frame, and the auxiliary heat dissipation component includes an air blowing nozzle group fixed in the inner cavity of the circular ring frame and located at the front end of the circular ring plate; a fan connected to the air blowing nozzle group is fixedly installed at the bottom end of the circular ring frame; a connecting hole group staggered with the air blowing nozzle group is penetrated through the inner cavity of the circular ring frame and located at the front end of the circular ring plate; baffles are fixedly installed at the bottom ends of both sides of the fixed frame; the air blowing nozzle group is driven by the fan to blow air toward the surface of the automobile wiring harness, and blowing air to it not only facilitates cleaning of the surface but also facilitates auxiliary heat dissipation; the dust blown off by the air blowing nozzle group will fall into the inner cavity of the fixed frame; baffles are provided at the bottom ends of both sides of the fixed frame to help reduce the spread of the blown dust, thereby facilitating use by the staff.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. After the automobile wiring harness of the present invention is fixed, the outer gear ring is driven to rotate by the rotation of the driving gear, and the inner gear ring is synchronously rotated by the rotation of the outer gear ring. The inner gear ring drives the linkage gear to rotate by meshing, and the linkage gear drives the rack to slide by meshing. The sliding of the rack drives multiple arc-shaped mounting plates to move relative to each other, and the shape memory alloy is driven to move synchronously by the movement of the arc-shaped mounting plate, thereby driving the arc-shaped heat transfer plate to abut against the surface of the automobile wiring harness, thereby facilitating the testing of the temperature of the surface of the automobile wiring harness. If the temperature of the surface of the automobile wiring harness exceeds the normal value, the arc-shaped heat transfer plate will transfer the heat it contacts to the shape memory alloy. The shape memory alloy will return to its original shape after being heated to a certain temperature. At this time, the length of the shape memory alloy will be shortened, thereby enabling the detection rod on one side of the arc-shaped heat transfer plate to abut against the arc-shaped mounting plate. The trigger switch in the board contacts, and since the first electromagnetic block and the second electromagnetic block are electrically connected to the trigger switch, at this time, the trigger switch will briefly turn on the power of the first electromagnetic block and the second electromagnetic block, and the blocking beads in the inner cavity of the marking liquid holding tank slide through the magnetic attraction between the two, and the quantitative marking liquid in the inner cavity of the marking liquid holding tank flows out through the sliding of the blocking beads, so as to facilitate the use of the marking liquid to mark the position where the temperature on the surface of the automobile wiring harness is too high, and marking it is convenient for the staff to carry out subsequent timely maintenance of its position, and the present invention detects the temperature of the surface of the automobile wiring harness before testing the automobile wiring harness, so that the equipment can accurately determine the position where the automobile wiring harness fails, and there is no need to conduct a comprehensive test on the entire circumferential surface of the automobile wiring harness in subsequent testing, which is conducive to reducing the labor burden of the staff and facilitating use.

[0018] 2. In the process of detecting the temperature of the surface of the automobile wiring harness, the present invention facilitates blowing air to the surface of the automobile wiring harness through the blowing nozzle group by driving the fan. Blowing air to the surface of the automobile wiring harness not only facilitates blowing off the floating dust on the surface of the automobile wiring harness, but also facilitates the heat dissipation of the automobile wiring harness, thereby facilitating the extension of the service life of the automobile wiring harness and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure connection of the fixing frame of the present invention;

[0022] Figure 3 It is a schematic diagram of the internal structure connection of the circular ring frame of the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structural connection of the annular plate of the present invention;

[0024] Figure 5For the present invention Figure 4 A partial enlarged view of the middle A;

[0025] Figure 6 This is a schematic diagram of the internal structure connection of the connecting plate of the present invention;

[0026] Figure 7 For the present invention Figure 6 A partial enlarged view of point B in the middle.

[0027] In the figure:

[0028] 1. Base; 11. Box; 12. Bidirectional screw; 13. Screw sleeve; 14. Transmission plate; 15. Fixed terminal; 16. Servo motor;

[0029] 2. Fixed frame; 21. Electric telescopic rod; 22. Ring frame; 23. Rotating motor; 24. First gear; 25. Second gear;

[0030] 3. Blowing nozzle group; 31. Fan; 32. Connecting hole group; 33. Circular plate; 34. Driving motor; 35. Driving gear; 36. Outer gear ring; 37. Inner gear ring; 38. Linkage gear; 39. Rack; 310. Arc-shaped mounting plate; 311. Shape memory alloy; 312. Arc-shaped heat transfer plate; 313. Detection rod; 314. Inner groove; 315. Trigger switch; 316. Oblique pipe; 317. Connecting plate;

[0031] 4. Marking liquid containing tank; 41. Outer sleeve; 42. Blocking bead; 43. First electromagnetic block; 44. Inner sleeve; 45. Second electromagnetic block; 46. Liquid injection hole; 47. Sealing plug;

[0032] 5. Baffle. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0034] See also Figure 1As shown, a new energy vehicle wiring harness testing device comprises a base 1, a vehicle wiring harness fixing mechanism is arranged at the top of the base 1, the vehicle wiring harness fixing mechanism comprises a box body 11 fixedly connected to the top of the base 1, a bidirectional screw 12 is rotatably connected between the two inner side walls of the box body 11, and the bidirectional screw 12 is provided with two sections of external threads with opposite thread rotation directions on one side close to the end, and the two sections of external threads of the bidirectional screw 12 with opposite thread rotation directions are threadedly sleeved with a screw sleeve 13 slidably connected to the inner cavity of the box body 11, and a transmission plate 14 is fixedly installed at the top of the screw sleeve 13, and the top of the transmission plate 14 passes through the box body 11 and extends to the top of the box body 11, and the end of the transmission plate 14 extending to the top of the box body 11 is provided with a fixed terminal 15 for fixing the vehicle wiring harness;

[0035] A servo motor 16 for driving the bidirectional screw 12 to rotate is fixedly mounted on one side of the box body 11 .

[0036] See also Figure 1 As shown, an electric telescopic rod 21 is fixedly installed at the top of the base 1 and on the other side of the box 11 through a support rod, and a fixed frame 2 slidably connected to the box 11 is fixedly installed at the output end of the electric telescopic rod 21, and baffles 5 are fixedly installed at the bottom ends of both sides of the fixed frame 2.

[0037] See also Figure 1-2 As shown, the inner cavity of the fixed frame 2 is provided with a temperature detection mechanism, which includes a circular frame 22 rotatably connected to the inner cavity of the fixed frame 2, a second gear 25 is fixedly sleeved on the outer peripheral wall of the circular frame 2, a rotating motor 23 is fixedly installed on the top of the inner cavity of the fixed frame 2, and a first gear 24 meshing with the second gear 25 is fixedly sleeved on the output end of the rotating motor 23;

[0038] A circular plate 33 is fixedly installed in the inner cavity of the circular ring frame 22, one side of the circular plate 33 is rotatably connected to an inner gear ring 37, one side of the circular plate 33 and an outer gear ring 36 is fixedly installed on the outer peripheral wall of the inner gear ring 37, one side of the circular plate 33 is rotatably connected to a driving gear 35 meshing with the outer gear ring 36, and the other side of the circular plate 33 is fixedly installed with a driving motor 34 for rotating the driving gear 35;

[0039] See also Figure 2-3 As shown, the inner cavity of the circular frame 22 and the front end of the circular plate 33 are fixedly installed with a blowing nozzle group 3, and the inner cavity of the circular frame 22 and the front end of the circular plate 33 are penetrated by a connecting hole group 32 which is staggered with the blowing nozzle group 3. Through the staggered arrangement of the two, the dust blown off the surface of the automobile wiring harness can fall into the inner cavity of the fixed frame 2, and the bottom end of the circular frame 2 is fixedly installed with a fan 31 which is connected with the blowing nozzle group 3.

[0040] See also Figure 4-5As shown, one side of the annular plate 33 and located inside the inner gear ring 37 is rotatably connected with at least two linkage gears 38 meshing with the inner gear ring 37, and the side of the inner gear ring 37 away from the annular plate 33 is slidably connected with a rack 39 meshing with the linkage gear 38, and an arc-shaped mounting plate 310 is fixedly installed on the side of the rack 39 close to the center of the annular plate 33, and a shape memory alloy 311 is fixedly installed on the side of the arc-shaped mounting plate 310 away from the rack 39, and an arc-shaped heat transfer plate 312 is fixedly installed on the side of the shape memory alloy 311 away from the arc-shaped mounting plate 310. When the shape memory alloy 311 contacts with a part with a higher temperature of the automobile wiring harness, the heat transfer plate 312 is fixedly installed on the side of the shape memory alloy 311 away from the arc-shaped mounting plate 310. The shape memory alloy 311 is heated by the arc-shaped heat transfer plate 312. When the shape memory alloy 311 reaches the deformation temperature, the length of the shape memory alloy 311 will be shortened. The shape memory alloy 311 is spiral in the present invention. When heated to a certain temperature, its length will be shortened. The arc-shaped heat transfer plate 312 is close to one side of the arc-shaped mounting plate 310 and is located on both sides of the shape memory alloy 311. A detection rod 313 is fixedly installed. An inner groove 314 matching the detection rod 313 is opened on one side of the arc-shaped mounting plate 310. A trigger switch 315 corresponding to the detection rod 313 is fixedly installed on the inner wall of the inner groove 314.

[0041] See also Figure 6-7 As shown, a connecting plate 317 matching with the circular plate 33 is fixedly installed on the other side of the circular plate 33. The connecting plate 317 is in the shape of a circular ring, and the center of the connecting plate 317 is colinear with the center of the circular ring plate 33. The inner cavity of the connecting plate 317 is provided with marking liquid containing grooves 4, which are the same in number as the arc-shaped heat transfer plates 312. The inner cavity of the marking liquid containing grooves 4 contains marking liquid. An oblique-mouthed pipe 316 connected to the inner cavity of the marking liquid containing grooves 4 is fixedly installed on the inner peripheral wall of the connecting plate 317. The oblique-mouthed pipe 316 is fixedly connected to the arc-shaped mounting plate 310. The oblique-mouthed pipe 316 is used to introduce the marking liquid into the automobile On the wiring harness, the inner cavity of the marking liquid containing tank 4 is slidably connected with a blocking bead 42 for blocking the connection between the marking liquid containing tank 4 and the oblique tube 316, an outer sleeve 41 is fixedly installed between the two inner side walls of the marking liquid containing tank 4, the inner cavity of the outer sleeve 41 is elastically slidably connected with an inner sleeve 44 fixedly connected to the blocking bead 42, the inner cavity of the outer sleeve 41 is also fixedly installed with a first electromagnetic block 43, the inner cavity of the inner sleeve 44 is fixedly installed with a second electromagnetic block 45 with opposite magnetic properties to the first electromagnetic block 43, and the first electromagnetic block 43 and the second electromagnetic block 45 are both electrically connected to the trigger switch 315;

[0042] The outer wall of the connecting plate 317 is provided with an injection hole 46 connected to the marking liquid containing tank 4, and the inner cavity of the injection hole 46 is provided with a sealing plug 47. The setting of the injection hole 46 and the sealing plug 47 facilitates the staff to inject liquid into the inner cavity of the marking liquid containing tank 4 in time.

[0043] When the present invention is used, the automobile wiring harness passes through the fixing frame 2 and the two ends of the automobile wiring harness are respectively connected to the two fixed wiring heads 15. After the connection, the distance between the two fixed wiring heads 15 is adjusted according to the length of the automobile wiring harness to be tested. When adjusting, the power of the servo motor 16 is turned on to rotate the bidirectional screw 12. The threads on the outer surface of the bidirectional screw 12 are divided into two sections with opposite rotation directions. The two screw sleeves 13 on the bidirectional screw 12 are relatively moved by the screw transmission action. The movement of the screw sleeve 13 drives the two fixed wiring heads 15 to move synchronously. After the two fixed wiring heads 15 move to the working position, the power of the servo motor 16 is disconnected.

[0044] After the automobile wiring harness is fixed, the temperature of the surface of the automobile wiring harness is tested in sections. During the test, the power supply of the driving motor 34 is first turned on to rotate the driving gear 35. When the driving gear 35 rotates, the outer gear ring 36 is driven to rotate by meshing, and the inner gear ring 37 is synchronously rotated by the rotation of the outer gear ring 36. The inner gear ring 37 drives the linkage gear 38 to rotate by meshing, and the linkage gear 38 drives the rack 39 to slide by meshing. The sliding of the rack 39 drives multiple arc-shaped mounting plates 310 to move relative to each other, and the shape memory alloy 311 is driven to move synchronously by the movement of the arc-shaped mounting plate 310, thereby driving the arc-shaped heat transfer plate 312 to abut against the surface of the automobile wiring harness, so as to facilitate the testing of the temperature of the surface of the automobile wiring harness. The movement of the arc-shaped mounting plate 310 can also drive the bevel pipe 316 to move synchronously.

[0045] During the test, the fan 31 is driven to blow air to the surface of the automobile wiring harness through the blowing nozzle group 3. Blowing air to the surface of the automobile wiring harness not only facilitates blowing off the dust on the surface of the automobile wiring harness, but also facilitates heat dissipation of the automobile wiring harness.

[0046] If the temperature of the surface of the automobile wiring harness exceeds the normal value, the arc-shaped heat transfer plate 312 will transfer the heat it contacts to the shape memory alloy 311. The shape memory alloy 311 will return to its original shape after being heated to a certain temperature. At this time, the length of the shape memory alloy 311 will be shortened, so that the detection rod 313 on one side of the arc-shaped heat transfer plate 312 can contact the trigger switch 315 in the arc-shaped mounting plate 310. Since the first electromagnetic block 43 and the second electromagnetic block 45 are electrically connected to the trigger switch 315, the trigger switch 315 will temporarily connect the power of the first electromagnetic block 43 and the second electromagnetic block 45. The blocking bead 42 in the inner cavity of the marking liquid holding tank 4 slides through the magnetic attraction between the two. The sliding of the blocking bead 42 causes the quantitative marking liquid in the inner cavity of the marking liquid holding tank 4 to flow out, so that the marking liquid can be used to mark the position where the temperature on the surface of the automobile wiring harness is too high. By marking it, it is convenient for the staff to maintain its position later, so that it is convenient for the staff to use it.

[0047] During the test, by turning on the power of the rotating motor 23, it is convenient to test different positions of the automobile wiring harness. After the test of this section of the automobile wiring harness is completed, the power of the electric telescopic rod 21 is turned on to slide the fixed frame 2. The sliding of the fixed frame 2 facilitates the test of the lateral position of the automobile wiring harness. After the fixed frame 2 slides to the working position, the above operation is repeated to complete the test of the entire section of the automobile wiring harness, which is convenient for subsequent use by the staff.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A new energy vehicle wiring harness testing device, comprising two fixed wiring heads (15) symmetrically slidably connected to the top of a box (11), characterized in that: An automobile wiring harness temperature detection mechanism is provided in the middle of the top of the box body (11), and the automobile wiring harness temperature detection mechanism comprises a fixed frame (2) horizontally slidably connected to the middle of the top of the box body (11), at least two shape memory alloys (311) are relatively slidably connected to the inner cavity of the fixed frame (2), and an arc-shaped heat transfer plate (312) abutting against the automobile wiring harness is fixedly installed on one side of the shape memory alloy (311) close to the center of the fixed frame (2); The inner cavity of the fixed frame (2) is also provided with a marking component, the marking component comprising a marking liquid containing tank (4) provided in the inner cavity of the fixed frame (2) and corresponding to the shape memory alloy (311), a blocking bead (42) which moves synchronously with the shape memory alloy (311) being slidably connected at the discharge port of the marking liquid containing tank (4), and the blocking bead (42) slides by deformation of the shape memory alloy (311).

2. A new energy vehicle wiring harness testing device according to claim 1, characterized in that: The inner cavity of the fixed frame (2) is also provided with a rotating assembly for rotating the two arc-shaped heat transfer plates (312), wherein the rotating assembly comprises a circular ring frame (22) rotatably connected to the inner cavity of the fixed frame (2), and the rotating circular ring frame (22) causes the two arc-shaped heat transfer plates (312) to rotate synchronously.

3. A new energy vehicle wiring harness testing device according to claim 2, characterized in that: The inner cavity of the annular frame (22) is provided with a driving assembly for causing the two shape memory alloys (311) to move relative to each other. The driving assembly comprises an annular plate (33) fixedly connected to the inner cavity of the annular frame (22); one side of the annular plate (33) is rotatably connected to an inner gear ring (37); one side of the annular plate (33) is rotatably connected to at least two linkage gears (38) meshing with the inner gear ring (37); a side of the inner gear ring (37) away from the annular plate (33) is slidably connected to a rack (39) meshing with the linkage gear (38); one end of the rack (39) is fixedly connected to an arc-shaped mounting plate (310); and the arc-shaped mounting plate (310) is fixedly connected to the shape memory alloy (311).

4. A new energy vehicle wiring harness testing device according to claim 3, characterized in that: A rotating member for driving the inner gear ring (37) to rotate is provided on one side of the annular plate (33), and the rotating member includes an outer gear ring (36) rotatably connected to one side of the annular plate (33), and the outer gear ring (36) is fixedly connected to the inner gear ring (37). A driving gear (35) meshing with the outer gear ring (36) is rotatably connected to one side of the annular plate (33), and the rotating driving gear (35) rotates the outer gear ring (36) through meshing, thereby driving the inner gear ring (37) to rotate.

5. A new energy vehicle wiring harness testing device according to claim 3, characterized in that: The inner cavity of the fixed frame (2) is provided with an oblique-mouthed tube (316) which is in communication with the discharge port of the marking liquid containing tank (4); the oblique-mouthed tube (316) is fixedly connected to the arc-shaped mounting plate (310).

6. A new energy vehicle wiring harness testing device according to claim 3, characterized in that: The inner cavity of the marking liquid containing tank (4) is provided with a control member for controlling the sliding of the blocking bead (42), and the control member includes an outer sleeve (41) fixed to the inner cavity of the marking liquid containing tank (4), the inner cavity of the outer sleeve (41) is elastically slidably connected to an inner sleeve (44) fixedly connected to the blocking bead (42), the inner cavity of the outer sleeve (41) is also fixedly installed with a first electromagnetic block (43), and the inner cavity of the inner sleeve (44) is fixedly installed with a second electromagnetic block (45) having a magnetic property opposite to that of the first electromagnetic block (43).

7. A new energy vehicle wiring harness testing device according to claim 6, characterized in that: Two detection rods (312) are symmetrically fixedly installed on one side of the arc-shaped heat transfer plate (312) away from the automobile wiring harness, and trigger switches (315) corresponding to the detection rods (312) are fixedly installed on one side of the arc-shaped mounting plate (310), and the first electromagnetic block (43) and the second electromagnetic block (45) are both electrically connected to the trigger switches (315).

8. A new energy vehicle wiring harness testing device according to claim 3, characterized in that: The inner cavity of the annular frame (22) is also provided with an auxiliary heat dissipation component, and the auxiliary heat dissipation component includes an air blowing nozzle group (3) fixed in the inner cavity of the annular frame (22) and located at the front end of the annular plate (33); a fan (31) connected to the air blowing nozzle group (3) is fixedly installed at the bottom end of the annular frame (22); and a connecting hole group (32) is penetrated through the inner cavity of the annular frame (22) and located at the front end of the annular plate (33) and is arranged in a staggered manner with the air blowing nozzle group (3).

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