An automobile wire harness stretching and torsion testing device and its testing method

Abstract

The present invention relates to the field of automotive wire harnesses, and mainly discloses an automotive wire harness stretching and torsion testing device and its testing method, including a tabletop, support legs, and a bottom plate. An adjustment mechanism and an adjustment motor are installed on the top of the bottom plate. A testing mechanism is installed on the top of the adjustment mechanism. Bar-shaped holes are symmetrically opened along the center on the tabletop. A wire storage tray is also installed in the middle of the top of the tabletop. The bar-shaped holes are distributed on both sides of the wire storage tray, and the bar-shaped holes on each side are arranged in a scattered manner. The two ends at the top of the testing mechanism are respectively arranged corresponding to the bar-shaped holes one by one. The testing mechanism designed in the present invention is used in cooperation with the bar-shaped holes opened on the tabletop, and can adjust the torsion mechanism and the locking mechanism slidably installed on the testing mechanism, change the distance between the two, and at the same time change the distance between different testing mechanisms while adjusting the distance between the torsion mechanism and the locking mechanism, thereby avoiding the mutual influence of the wire harnesses between different testing mechanisms.

Description

Technical Field

[0001] The present invention relates to the field of automotive wiring harnesses. Specifically, it relates to an automotive wiring harness stretching and torsion testing device and its testing method. Background Technique

[0002] The automotive wiring harness is the main network of the automotive circuit. Without the wiring harness, there would be no automotive circuit. A wiring harness refers to a component formed by crimping contact terminals (connectors) made of copper material with wires and cables, and then externally molding an insulator or adding a metal shell, etc., and bundling the wiring harness to form a connected circuit.

[0003] After the production and processing of automotive wiring harnesses, spot checks are carried out to detect the qualified rate of the wiring harnesses. Generally, the spot checks not only test the signal conduction performance of the wiring harnesses, but also test their external strength. General tests include, but are not limited to, stretching and torsion. The purpose is to ensure the integrity of the wiring harness under external stretching and torsion.

[0004] Traditional wiring harness stretching and torsion tests are often carried out separately. Even if some equipment can adjust the distance while twisting, it is only limited to the test of a single wiring harness. Therefore, in actual operation, multiple machines are used or queued for testing when testing a single type of wiring harness, which is relatively time-consuming and laborious as a whole.

[0005] Regarding the problems in the related art, no effective solution has been proposed yet. Summary of the Invention

[0006] The purpose of the present invention is to provide an automotive wiring harness stretching and torsion testing device and its testing method to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] An automotive wiring harness stretching and torsion testing device includes a tabletop. Four corners of the bottom of the tabletop are fixedly installed with legs. A bottom plate is also provided directly below the tabletop. An adjusting mechanism is installed on the top of the bottom plate. An adjusting motor for driving the adjusting mechanism is also installed on the bottom plate. A testing mechanism is installed on the top of the adjusting mechanism. Bar-shaped holes are symmetrically opened along the center of the tabletop. A wire storage tray is also installed in the middle of the top of the tabletop. The bar-shaped holes are distributed on both sides of the wire storage tray, and the bar-shaped holes on each side are arranged in a scattered manner. The two ends of the top of the testing mechanism are respectively corresponding to the bar-shaped holes one by one, and the two ends of the top of the testing mechanism respectively pass through their respective opposite bar-shaped holes;

[0009] The adjusting mechanism includes a fixed seat fixedly installed at the center of the top of the bottom plate. A cross plate is fixedly installed at the top end of the fixed seat. End plates are fixedly installed at the tops of both ends of the cross plate. An adjusting roller is rotatably installed between the two end plates. Grooves are symmetrically formed along the center on the outer wall of the adjusting roller. The grooves are spirally formed on the adjusting roller. There are multiple groups of testing mechanisms. The number of the testing mechanisms is equal to and corresponds one by one to the number of the grooves. The center of the bottom of the testing mechanism is slidably arranged in the corresponding groove. The top end of the end plate is also fixedly installed with a top plate. First sliding rails arranged along its length direction are symmetrically installed along the center on the top plate. Slide holes are also symmetrically formed along the center on the top plate. The bottom of the testing mechanism is slidably arranged on the first sliding rails.

[0010] Further, one end of the adjusting roller is fixedly installed with an adjusting shaft. The adjusting shaft penetrates through the end plate on one side and is fixedly installed with a driven belt pulley. The end of the output shaft of the adjusting motor is fixedly installed with a driving belt pulley. The driven belt pulley and the driving belt pulley are connected by a transmission belt.

[0011] Further, the testing mechanism includes an inverted U-shaped frame. The bottom end of the U-shaped frame penetrates through the slide hole. First sliders are fixedly installed on the outer walls of both sides of the U-shaped frame. The first sliders are slidably arranged on the first sliding rails. A connecting plate is fixedly installed at the bottom end of the U-shaped frame. A guide post is installed at the center of the bottom end of the connecting plate. The guide post is slidably arranged in the groove. A support frame is fixedly installed at the center of the top end of the U-shaped frame. A strip-shaped plate is fixedly installed at the top end of the support frame. Second sliding rails arranged along its length direction are symmetrically installed along the center on the top of the strip-shaped plate. Guide seats are slidably installed on both of the second sliding rails. A torsion mechanism and a locking mechanism are respectively installed on the two guide seats.

[0012] Further, a reinforcing rod is also installed through the top of the support frame. Both ends of the reinforcing rod are fixedly installed at the bottom of the strip-shaped plate. Fixed plates are fixedly installed on the tops of the guide seats. Vertical rods are fixedly installed at the top ends of the fixed plates. The top ends of the vertical rods penetrate through the strip-shaped holes. Guide rollers are also rotatably installed on the outside of the vertical rods. The guide rollers roll in the strip-shaped holes. A support plate is fixedly installed at the top end of the vertical rod. The torsion mechanism and the locking mechanism are respectively installed on the corresponding support plates.

[0013] Further, the torsion mechanism includes a first mounting seat fixedly installed on the top of one side support plate. A transmission box is fixedly installed on the top of the first mounting seat. A torsion motor is installed at the bottom of the end of the transmission box away from the locking mechanism. The torsion motor is installed on the first mounting seat. The output shaft of the torsion motor is connected to the input shaft of the transmission box. A wire clamping device is fixedly installed at the end of the output shaft of the transmission box.

[0014] Further, the wire clamp includes an outer frame. In the middle of one end of the outer frame, a fitting sleeve is fixedly installed. The fitting sleeve is fixedly installed at the end of the output shaft of the transmission box. At the end of the outer frame far from the fitting sleeve, a fixed block is fixedly installed. At the top of the end of the fixed block far from the outer frame, a wire clamping groove is formed. A threaded hole is also formed in the fixed block and is arranged opposite to the fitting sleeve. The threaded hole communicates with the wire clamping groove. A threaded rod is inserted through the threaded hole in a penetrating manner. A jack is also formed in the center of the threaded rod. A plug rod is inserted through the jack in a penetrating manner. One end of the plug rod is inserted into the fitting sleeve, and the other end of the plug rod is fixedly installed with a push-pull plate. The push-pull plate is arranged in the wire clamping groove. Two wire clamping blocks are symmetrically installed in the wire clamping groove. The wire clamping groove is gradually narrowed and inclined from the bottom to the opening. The side walls of the two wire clamping blocks away from each other are in contact with the side wall of the wire clamping groove. An opening groove is formed on the end face of the two wire clamping blocks facing each other. An arc groove is formed on the side wall of the opening groove close to the threaded hole. A clamping plate is fixedly installed at the end of the push-pull plate away from the plug rod. The clamping plate is clamped in the opening groove.

[0015] Further, a rotating handle is fixedly installed on the outside of the end of the threaded rod close to the fitting sleeve. A turning handle is fixedly installed on the outside of the rotating handle. Anti-slip lines are formed on the side faces of the two wire clamping blocks facing each other. A limiting hole is formed at the bottom of the wire clamping groove. The limiting hole is arranged along the length direction of the side wall of the wire clamping groove. A sliding rod is fixedly installed on the end face of the wire clamping block facing the limiting hole. The sliding rod is slidably arranged in the limiting hole. Locking grooves are also formed on both sides of the fixed block where the wire clamping groove is located. A locking block is fixedly installed in the locking groove. One end of the locking block protrudes from the locking groove.

[0016] Further, the locking mechanism includes a second mounting seat fixedly installed on the top of the guide seat far from the torsion mechanism. A slot is formed on the top of the second mounting seat. A vertical plate is fixedly inserted into the slot. On the end face of the vertical plate facing the torsion mechanism, second sliding rails are symmetrically installed along the center in a vertical direction. Second sliding blocks are slidably installed on the second sliding rails. A lifting block is fixedly installed on the end face of the second sliding block away from the second sliding rail. A pressing hole is formed in the center of the bottom of the lifting block. The aperture of the bottom of the pressing hole is larger than the aperture of the top of the pressing hole. A retaining edge is arranged inside the pressing hole. A base is also fixedly installed on the vertical plate. The base is arranged directly below the lifting block. A pressing rod is also arranged between the base and the lifting block. The top end of the pressing rod is inserted into the pressing hole. An annular plate is fixedly installed on the outside of the pressing rod. A top spring is arranged between the annular plate and the pressing hole. The top spring is sleeved on the outside of the pressing rod. The top end of the top spring abuts against the retaining edge tightly. A pressing block is fixedly installed on the bottom end of the pressing rod.

[0017] Furthermore, an extension block is fixedly installed on the vertical plate. A guide sleeve is installed through the extension block, and the pressure rod is arranged through the guide sleeve. A pressure groove is formed at the top of the base, and the pressure groove is arranged opposite to the pressure block. An assembly shaft is also fixedly installed on the vertical plate. The assembly shaft is arranged between two second slide rails. An eccentric wheel is rotatably installed on the outer part of the assembly shaft. An arc-shaped hole is formed in the eccentric wheel and is arranged around the assembly shaft. A limit shaft is also fixedly installed on the vertical plate, and the limit shaft is slidably arranged in the arc-shaped hole. A handle is also fixedly installed on the outer wall of the eccentric wheel.

[0018] A testing method for an automotive wire harness stretching and torsion testing device according to the above, comprising the following steps:

[0019] S1. Adjust the distance between the torsion mechanism and the locking mechanism according to the length of the wire harness to be tested;

[0020] S2. Fix one end of the wire harness between the pressure block and the pressure groove, and fix the other end of the wire harness through the wire clamp;

[0021] S3. Start the adjustment motor, and perform a stretching test on the wire harness by rotating the adjustment roller;

[0022] S4. Start the torsion motor, and perform a torsion test on the wire harness while stretching the wire harness in step S3.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The testing mechanism designed by the present invention is used in cooperation with the strip-shaped holes symmetrically arranged in a scattered shape on the table board, and can adjust the torsion mechanism and the locking mechanism slidably installed on the testing mechanism, change the distance between the two, and can also change the distance between different testing mechanisms while adjusting the distance between the torsion mechanism and the locking mechanism, thereby avoiding the mutual influence of the wire harnesses between different testing mechanisms.

[0025] The locking mechanism provided by the present invention can achieve stable pressing of the end of the wire harness. Only by rotating the handle can the pressing force of the end of the wire harness be adjusted to ensure the stability of the wire harness during stretching and torsion testing, and it is also very convenient to remove the wire harness later. Just rotate the handle in the reverse direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0028] Figure 2 It is a schematic top structure diagram of a table board in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0029] Figure 3 It is an assembly drawing of an adjusting mechanism and a testing mechanism in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0030] Figure 4 It is a schematic structural diagram of an adjusting mechanism in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0031] Figure 5 It is a schematic structural diagram of an adjusting roller in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0032] Figure 6 It is a schematic structural diagram of a testing mechanism in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of a strip board in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0034] Figure 8 It is a schematic structural diagram of a torsion mechanism in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0035] Figure 9 It is a schematic structural diagram of a wire clamp in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0036] Figure 10 It is a schematic structural diagram of a fixing block in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0037] Figure 11 It is a schematic structural diagram of a threaded rod in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0038] Figure 12 It is a schematic structural diagram of a plug rod in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0039] Figure 13 It is a schematic structural diagram of a wire clamping block in a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention;

[0040] Figure 14It is an assembly drawing of a locking mechanism in an automotive wire harness stretching and twisting test device according to an embodiment of the present invention;

[0041] Figure 15 It is a schematic structural diagram of a second mounting seat in an automotive wire harness stretching and twisting test device according to an embodiment of the present invention;

[0042] Figure 16 It is a schematic structural diagram of a locking mechanism in an automotive wire harness stretching and twisting test device according to an embodiment of the present invention;

[0043] Figure 17 It is a schematic structural diagram of a lifting block in an automotive wire harness stretching and twisting test device according to an embodiment of the present invention;

[0044] Figure 18 It is a schematic structural diagram of a pressure rod in an automotive wire harness stretching and twisting test device according to an embodiment of the present invention;

[0045] Figure 19 It is a schematic structural diagram of a vertical plate in an automotive wire harness stretching and twisting test device according to an embodiment of the present invention.

[0046] Reference numerals:

[0047] 1, table board; 2, support leg; 3, bottom board; 4, adjustment mechanism; 5, adjustment motor; 6, test mechanism; 7, wire spool; 8, elongated hole; 9, fixed seat; 10, cross board; 11, end board; 12, adjustment roller; 13, groove; 14, adjustment shaft; 15, driven pulley; 16, driving pulley; 17, transmission belt; 18, top board; 19, first slide rail; 20, sliding hole; 21, U-shaped frame; 22, first slider; 23, connecting plate; 24, guide post; 25, support frame; 26, strip board; 27, strengthening rod; 28, guide rail; 29, torsion mechanism; 30, locking mechanism; 31, guide seat; 32, fixing plate; 33, vertical rod; 34, guide roller; 35, support plate; 36, first mounting seat; 37, transmission box; 38, torsion motor; 39, wire clamp; 40, outer frame; 41, fitting sleeve; 42, fixed block; 43, wire clamping groove; 44, threaded hole; 45, threaded rod; 46, turning handle; 47, inserting rod; 48, turning handle; 49, inserting hole; 50, push-pull plate; 51, clamping plate; 52, wire clamping block; 53, anti-slip pattern; 54, notch groove; 55, arc groove; 56, slide rod; 57, limiting hole; 58, locking groove; 59, locking block; 60, second mounting seat; 61, vertical plate; 62, slot; 63, second slide rail; 64, lifting block; 65, second slider; 66, pressing hole; 67, retaining edge; 68, base; 69, pressure rod; 70, pressing block; 71, annular plate; 72, top spring; 73, extension block; 74, guide sleeve; 75, pressing groove; 76, assembly shaft; 77, eccentric wheel; 78, grip; 79, arc hole; 80, limiting shaft. Specific embodiments

[0048] The following further describes the invention in conjunction with the accompanying drawings and specific embodiments:

[0049] Embodiment 1: Please refer to Figures 1-5 , a stretching and torsion test device for an automotive wire harness according to an embodiment of the present invention, includes a table board 1. Four legs 2 are fixedly installed at the four corners of the bottom of the table board 1. A bottom board 3 is further provided directly below the table board 1. The four corners of the bottom board 3 are fixedly installed on the four legs 2. An adjusting mechanism 4 is installed on the top of the bottom board 3, and an adjusting motor 5 for driving the adjusting mechanism 4 is also installed on the bottom board 3. A testing mechanism 6 is installed on the top of the adjusting mechanism 4. Strip-shaped holes 8 are symmetrically arranged along the center on the table board 1. A wire-receiving tray 7 is also installed in the middle of the top of the table board 1. The strip-shaped holes 8 are distributed on both sides of the wire-receiving tray 7, and the strip-shaped holes 8 on each side are arranged in a scattered manner. The two ends of the top of the testing mechanism 6 are respectively arranged corresponding to the strip-shaped holes 8 one by one, and the two ends of the top of the testing mechanism 6 respectively pass through the respective opposite strip-shaped holes 8. Fix the two ends of the wire harness to be tested at the corresponding positions at the two ends of the top of the testing mechanism 6, and then the testing mechanism 6 can be adjusted through the adjusting mechanism 4 to realize the detection of the wire harness.

[0050] The adjusting mechanism 4 includes a fixed seat 9 fixedly installed at the center of the top of the bottom board 3. The top end of the fixed seat 9 is fixedly installed with a cross board 10. End plates 11 are fixedly installed at the tops of both ends of the cross board 10. An adjusting roller 12 is rotatably installed between the two end plates 11. Grooves 13 are symmetrically arranged along the center on the outer wall of the adjusting roller 12, and the grooves 13 are spirally arranged on the adjusting roller 12. There are multiple groups of the testing mechanisms 6. The number of the testing mechanisms 6 is equal to and corresponds to the number of the grooves 13 one by one. The center of the bottom of the testing mechanism 6 is slidably arranged in the corresponding groove 13. When the adjusting roller 12 rotates under an external force, the adjusting roller 12 will drive the connected testing mechanism 6 to move and adjust synchronously through the grooves 13 on its outer wall, and then the distance between two adjacent testing mechanisms 6 can be changed to avoid mutual influence during the testing process.

[0051] One end of the adjusting roller 12 is fixedly installed with an adjusting shaft 14. The adjusting shaft 14 penetrates through one side of the end plate 11 and is fixedly installed with a driven belt pulley 15. The output shaft end of the adjusting motor 5 is fixedly installed with a driving belt pulley 16. The driven belt pulley 15 and the driving belt pulley 16 are connected by a transmission belt 17.

[0052] At the top end of the end plate 11, a top plate 18 is fixedly installed. The top plate 18 is arranged along the length direction of the cross plate 10, and first slide rails 19 arranged along its length direction are symmetrically installed at the center of the top plate 18. Slide holes 20 are also symmetrically opened at the center of the top plate 18. The slide holes 20 are parallel to the first slide rails 19. The bottom of the testing mechanism 6 is slidably arranged on the first slide rails 19, and the bottom end of the testing mechanism 6 passes through the slide holes 20 and is arranged.

[0053] Please refer to Figures 6-7 , the testing mechanism 6 includes a U-shaped frame 21. The U-shaped frame 21 is arranged in an inverted manner. The bottom end of the U-shaped frame 21 passes through the slide holes 20 and is arranged. First sliders 22 are fixedly installed on the outer walls on both sides of the U-shaped frame 21. The first sliders 22 are slidably arranged on the first slide rails 19. A connecting plate 23 is fixedly installed at the bottom end of the U-shaped frame 21. A guide post 24 is installed at the center of the bottom end of the connecting plate 23. The guide post 24 is slidably arranged in the groove 13. When the adjusting roller 12 rotates, the guide post 24 can be driven to move through the groove 13. The guide post 24 then drives the U-shaped frame 21 to move through the connecting plate 23. The U-shaped frame 21 can stably slide and adjust on the first slide rails 19 through the first sliders 22. At the center of the top end of the U-shaped frame 21, a support frame 25 is fixedly installed. At the top end of the support frame 25, a strip-shaped plate 26 is fixedly installed. Guide rails 28 arranged along its length direction are symmetrically installed at the center of the top of the strip-shaped plate 26. Guide seats 31 are slidably installed on both guide rails 28. A torsion mechanism 29 and a locking mechanism 30 are respectively installed on the two guide seats 31. Both the torsion mechanism 29 and the locking mechanism 30 are arranged above the table board 1.

[0054] A reinforcing rod 27 is also installed through the top of the support frame 25. Both ends of the reinforcing rod 27 are fixedly installed at the bottom of the strip-shaped plate 26. The reinforcing rod 27 can increase the stability of the strip-shaped plate 26.

[0055] Please refer to Figures 8-14 , on the top of each guide seat 31, a fixing plate 32 is fixedly installed. At the top end of the fixing plate 32, a vertical rod 33 is fixedly installed. The top of the vertical rod 33 passes through the strip-shaped hole 8 and is arranged. A guide roller 34 is also rotatably installed on the outside of the vertical rod 33. The guide roller 34 rolls in the strip-shaped hole 8. At the top end of the vertical rod 33, a support plate 35 is fixedly installed. The torsion mechanism 29 and the locking mechanism 30 are respectively installed on the corresponding support plates 35.

[0056] Start the adjustment motor 5. The adjustment motor 5 will drive the driven pulley 15 to rotate through the driving pulley 16 and the transmission belt 17, thereby realizing the rotational adjustment of the adjustment roller 12. When the adjustment roller 12 rotates, it will also drive the guide post 24 to move through the groove 13 on its outer wall. The guide post 24 is connected to the U-shaped frame 21 through the connecting plate 23, and the U-shaped frame 21 is slidably connected to the sliding hole 20. Therefore, when the guide post 24 moves, it will drive the U-shaped frame 21 to slide along the length direction of the sliding hole 20 through the connecting plate 23. The sliding of the U-shaped frame 21 can drive the strip plate 26 to move synchronously through the support frame 25, thereby realizing the movement adjustment of the torsion mechanism 29 and the locking mechanism 30 slidably mounted on the top of the strip plate 26 on the guide rail 28, so that the two adjacent test mechanisms 6 are moved away from each other to reduce the influence. When the torsion mechanism 29 and the locking mechanism 30 are moved and adjusted along the length direction of the sliding hole 20, the vertical rod 33 on the top of the guide seat 31 will also move in the strip hole 8. Through the adjustment of the strip hole 8, the vertical rod 33 will drive the torsion mechanism 29 and the locking mechanism 30 to move away from each other through the support plate 35, thereby realizing the stretching of the wire harness while the torsion mechanism 29 realizes torsion.

[0057] The torsion mechanism 29 includes a first mounting seat 36 fixedly installed on the top of one side support plate 35. A transmission box 37 is fixedly installed on the top of the first mounting seat 36. A torsion motor 38 is installed at the bottom of one end of the transmission box 37 away from the locking mechanism 30. The torsion motor 38 is installed on the first mounting seat 36, and the output shaft of the torsion motor 38 is connected to the input shaft of the transmission box 37. A wire clamp 39 is fixedly installed at the end of the output shaft of the transmission box 37. The wire clamp 39 is used to stably clamp one end of the wire harness, and the other end of the wire harness is fixed by the locking mechanism 30. Start the torsion motor 38, and the torsion motor 38 can drive the wire clamp 39 to rotate through the transmission box 37, thereby realizing the torsion test of the wire harness.

[0058] The wire clamping device 39 includes an outer frame 40. In the middle of one end of the outer frame 40, a fitting sleeve 41 is fixedly installed, and the fitting sleeve 41 is fixedly installed at the end of the output shaft of the transmission box 37. At one end of the outer frame 40 away from the fitting sleeve 41, a fixed block 42 is fixedly installed. At the top of one end of the fixed block 42 away from the outer frame 40, a wire clamping groove 43 is opened. On the fixed block 42, a threaded hole 44 is also opened and is arranged opposite to the fitting sleeve 41. The threaded hole 44 communicates with the wire clamping groove 43. A threaded rod 45 is penetrated and screwed in the threaded hole 44. A jack 49 is also opened in the center of the threaded rod 45. A plug rod 47 is penetrated and inserted in the jack 49. One end of the plug rod 47 is inserted into the fitting sleeve 41, and the other end of the plug rod 47 is fixedly installed with a push-pull plate 50. The push-pull plate 50 is arranged in the wire clamping groove 43. Two wire clamping blocks 52 are symmetrically installed in the wire clamping groove 43. The wire clamping groove 43 is gradually narrowed and inclined from the bottom to the opening. The side walls of the two wire clamping blocks 52 away from each other are abutted against the side wall of the wire clamping groove 43. An opening groove 54 is opened on the end face of the two wire clamping blocks 52 opposite to each other. The opening groove 54 is arranged close to the threaded hole 44, and an arc groove 55 is opened on the side wall of the opening groove 54 close to the threaded hole 44. A clamping plate 51 is fixedly installed at the end of the push-pull plate 50 away from the plug rod 47, and the clamping plate 51 is clamped in the opening groove 54.

[0059] When the threaded rod 45 is rotated, the threaded rod 45 can move in the threaded hole 44. The movement of the threaded rod 45 will push the push-pull plate 50 to move synchronously. The push-pull plate 50 can stably move along the length direction of the threaded rod 45 by means of the plug rod 47. When the push-pull plate 50 moves, it will drive the clamping plate 51 to move. The clamping plate 51 drives the wire clamping block 52 to move through the opening groove 54. By means of the inner side wall of the wire clamping groove 43, the distance between the two wire clamping blocks 52 can be adjusted, and the clamping of the end of the wire harness is realized.

[0060] A rotating handle 46 is fixedly installed on the outside of the end of the threaded rod 45 close to the fitting sleeve 41. A turning handle 48 is fixedly installed on the outside of the rotating handle 46. Anti-slip lines 53 are opened on the side faces of the two wire clamping blocks 52 opposite to each other. A limiting hole 57 is opened at the bottom of the wire clamping groove 43. The limiting hole 57 is arranged along the length direction of the side wall of the wire clamping groove 43. A sliding rod 56 is fixedly installed on the end face of the wire clamping block 52 facing the limiting hole 57, and the sliding rod 56 is slidably arranged in the limiting hole 57. By means of the turning handle 48 on the outside of the rotating handle 46, the threaded rod 45 can be easily rotated and adjusted. The cooperation of the limiting hole 57 and the sliding rod 56 can enable the wire clamping block 52 to be adjusted more stably.

[0061] Locking grooves 58 are also opened on both sides of the wire clamping groove 43 on the fixed block 42. A locking block 59 is fixedly installed in the locking grooves 58, and one end of the locking block 59 protrudes from the locking grooves 58. The locking block 59 can limit the wire clamping block 52 in the wire clamping groove 43.

[0062] Through the above solution of the present invention, the test mechanism 6 designed by the present invention is used in cooperation with the strip-shaped holes 8 symmetrically arranged in a scattering shape on the table board 1, and the torsion mechanism 29 and the locking mechanism 30 slidably installed on the test mechanism 6 can be adjusted to change the distance between the two, and while adjusting the distance between the torsion mechanism 29 and the locking mechanism 30, the distance between different test mechanisms 6 can also be changed, thereby avoiding the mutual influence of the wire harnesses between different test mechanisms 6.

[0063] Embodiment 2: Please refer to Figures 14-19 For Embodiment 1, in order to enable the locking mechanism 30 to stably clamp the other end of the wire harness when the torsion mechanism 29 drives the wire harness to twist, in this embodiment, the locking mechanism 30 includes a second mounting seat 60 fixedly installed on the top of the guide seat 31 arranged away from the torsion mechanism 29. A slot 62 is opened on the top of the second mounting seat 60. A vertical plate 61 is fixedly inserted inside the slot 62. On the end face of the vertical plate 61 facing the torsion mechanism 29, second slide rails 63 arranged symmetrically along the center are installed vertically. A second slider 65 is slidably installed on the second slide rails 63. One end face of the second slider 65 away from the second slide rails 63 is fixedly installed with a lifting block 64. A pressing hole 66 is opened at the center of the bottom of the lifting block 64. The aperture of the bottom of the pressing hole 66 is larger than the aperture of the top of the pressing hole 66. A retaining edge 67 is arranged inside the pressing hole 66. A base 68 is also fixedly installed on the vertical plate 61. The base 68 is arranged directly below the lifting block 64. A pressing rod 69 is also arranged between the base 68 and the lifting block 64. The top end of the pressing rod 69 is inserted into the pressing hole 66, and an annular plate 71 is fixedly installed on the outer part of the pressing rod 69. A top spring 72 is arranged between the annular plate 71 and the pressing hole 66. The top spring 72 is sleeved on the outer part of the pressing rod 69, and the top end of the top spring 72 abuts against the retaining edge 67. The bottom end of the pressing rod 69 is fixedly installed with a pressing block 70.

[0064] When a force is applied to the lifting block 64 to move it towards the base 68, the lifting block 64 can move towards the base 68 along the second slide rails 63 through the second slider 65. The movement of the lifting block 64 will squeeze the top spring 72 through the retaining edge 67 in the pressing hole 66. The top spring 72 can squeeze the annular plate 71 through the retaining edge 67, so that the annular plate 71 can drive the pressing rod 69 to move towards the base 68, and then the pressing block 70 can tightly abut against the base 68. If the end of the wire harness is placed between the pressing block 70 and the base 68, stable clamping of the end of the wire harness can be achieved.

[0065] An extension block 73 is also fixedly installed on the vertical plate 61. A guide sleeve 74 is installed through the extension block 73. The pressing rod 69 passes through the guide sleeve 74. A pressing groove 75 is opened on the top of the base 68. The pressing groove 75 is arranged directly opposite to the pressing block 70.

[0066] An assembly shaft 76 is also fixedly installed on the vertical plate 61. The assembly shaft 76 is arranged between two second slide rails 63. An eccentric wheel 77 is rotatably installed on the outer part of the assembly shaft 76. An arc-shaped hole 79 is formed in the eccentric wheel 77 and is arranged around the assembly shaft 76. A limiting shaft 80 is also fixedly installed on the vertical plate 61. The limiting shaft 80 is slidably arranged in the arc-shaped hole 79. A handle 78 is also fixedly installed on the outer wall of the eccentric wheel 77. By rotating the eccentric wheel 77 through the handle 78, the eccentric wheel 77 can rotate around the assembly shaft 76. When the eccentric wheel 77 rotates, it will squeeze the lifting block 64 through its bottom wall, so as to realize the adjustment of the pressure between the pressing block 70 and the pressing groove 75, and ensure the stable pressing of the end of the wire harness.

[0067] Through the above scheme of the present invention, the locking mechanism 30 provided by the present invention can realize the stable pressing of the end of the wire harness. Only by rotating the handle 78 can the pressing force of the end of the wire harness be adjusted, ensuring the stability of the wire harness during the stretching and torsion tests, and it is also very convenient to remove the wire harness subsequently. Just rotate the handle 78 in the reverse direction.

[0068] Embodiment 3: For Embodiment 1 and Embodiment 2, in order to better reflect the actual use effect of the above-mentioned automotive wire harness stretching and torsion test device, this embodiment also discloses a method for testing a wire harness by the above-mentioned automotive wire harness stretching and torsion test device, including the following steps:

[0069] S1. Adjust the distance between the torsion mechanism 29 and the locking mechanism 30 according to the length of the wire harness to be tested;

[0070] S2. Fix one end of the wire harness between the pressing block 70 and the pressing groove 75, and fix the other end of the wire harness through the wire clamp 39;

[0071] S3. Start the adjustment motor 5 and perform a stretching test on the wire harness by rotating the adjustment roller 12;

[0072] S4. Start the torsion motor 38 and perform a torsion test on the wire harness while stretching the wire harness in step S3.

[0073] It can be seen from the above usage method that stretching and torsion can be carried out synchronously during the whole process, ensuring the high efficiency of the test.

[0074] In order to facilitate the understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0075] The test mechanism 6 designed in the present invention is used in cooperation with the strip-shaped holes 8 symmetrically arranged in a scattered manner on the table board 1, and can adjust the torsion mechanism 29 and the locking mechanism 30 slidably installed on the test mechanism 6, change the distance between the two, and while adjusting the distance between the torsion mechanism 29 and the locking mechanism 30, the distance between different test mechanisms 6 can also be changed, so as to avoid the mutual influence of the wire harnesses between different test mechanisms 6.

[0076] The locking mechanism 30 provided in the present invention can realize the stable pressing of the end of the wire harness. Only by rotating the grip 78 can the pressing force of the end of the wire harness be adjusted to ensure the stability of the wire harness during tensile and torsion tests, and it is also very convenient to remove the wire harness later. Just rotate the grip 78 in the reverse direction.

[0077] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0078] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0079] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0080] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automotive wire harness stretching and torsion testing device, including a tabletop (1), characterized in that, Four legs (2) are fixedly installed at the four corners of the bottom of the tabletop (1). A bottom plate (3) is further provided directly below the tabletop (1). An adjusting mechanism (4) is installed on the top of the bottom plate (3). An adjusting motor (5) for driving the adjusting mechanism (4) is also installed on the bottom plate (3). A testing mechanism (6) is installed on the top of the adjusting mechanism (4). Strip-shaped holes (8) are symmetrically arranged along the center of the tabletop (1). A wire spool (7) is further installed in the middle of the top of the tabletop (1). The strip-shaped holes (8) are distributed on both sides of the wire spool (7), and the strip-shaped holes (8) on each side are arranged in a scattered manner. The two ends of the top of the testing mechanism (6) are respectively arranged in one-to-one correspondence with the strip-shaped holes (8). The two ends of the top of the testing mechanism (6) respectively pass through the respective opposite strip-shaped holes (8) and are arranged; The adjusting mechanism (4) includes a fixed seat (9) fixedly installed at the center of the top of the bottom plate (3). A cross plate (10) is fixedly installed at the top end of the fixed seat (9). End plates (11) are fixedly installed at the tops of both ends of the cross plate (10). An adjusting roller (12) is rotatably installed between the two end plates (11). Grooves (13) are symmetrically arranged along the center on the outer wall of the adjusting roller (12). The grooves (13) are spirally arranged on the adjusting roller (12). Multiple groups of testing mechanisms (6) are provided. The number of the testing mechanisms (6) is equal to and in one-to-one correspondence with the number of the grooves (13). The center of the bottom of the testing mechanism (6) is slidably arranged in the corresponding groove (13). A top plate (18) is further fixedly installed at the top end of the end plate (11). First slide rails (19) arranged along its length direction are symmetrically installed along the center on the top plate (18). Slide holes (20) are also symmetrically arranged along the center on the top plate (18). The bottom of the testing mechanism (6) is slidably arranged on the first slide rails (19); A torsion mechanism (29) and a locking mechanism (30) are slidably installed on the testing mechanism (6); The torsion mechanism (29) includes a first mounting seat (36). A transmission box (37) is fixedly installed at the top of the first mounting seat (36). A torsion motor (38) is installed at the bottom of the end of the transmission box (37) away from the locking mechanism (30). The torsion motor (38) is installed on the first mounting seat (36). The output shaft of the torsion motor (38) is connected to the input shaft of the transmission box (37). A wire clamp (39) is fixedly installed at the end of the output shaft of the transmission box (37); The locking mechanism (30) includes a second mounting base (60). A slot (62) is formed at the top of the second mounting base (60). A vertical plate (61) is fixedly inserted into the slot (62). Second slide rails (63) are symmetrically mounted on one end face of the vertical plate (61) facing the torsion mechanism (29). Second sliders (65) are slidably mounted on the second slide rails (63). A lifting block (64) is fixedly mounted on one end face of the second slider (65) away from the second slide rail (63). A pressing hole (66) is formed at the center of the bottom of the lifting block (64). The aperture at the bottom of the pressing hole (66) is larger than the aperture at the top of the pressing hole (66). A retaining edge (67) is provided inside the pressing hole (66). A base (68) is also fixedly mounted on the vertical plate (61). The base (68) is located directly below the lifting block (64). A pressing rod (69) is further provided between the base (68) and the lifting block (64). The top end of the pressing rod (69) is inserted into the pressing hole (66). An annular plate (71) is fixedly mounted on the outer part of the pressing rod (69). A top spring (72) is provided between the annular plate (71) and the pressing hole (66). The top spring (72) is sleeved on the outer part of the pressing rod (69). The top end of the top spring (72) abuts against the retaining edge (67). A pressing block (70) is fixedly mounted on the bottom end of the pressing rod (69).

2. The automotive wire harness stretching and torsion testing device and its testing method according to claim 1, characterized in that, One end of the adjusting roller (12) is fixedly mounted with an adjusting shaft (14). The adjusting shaft (14) penetrates through the end plate (11) on one side and is fixedly mounted with a driven belt pulley (15). The output shaft end of the adjusting motor (5) is fixedly mounted with a driving belt pulley (16). The driven belt pulley (15) and the driving belt pulley (16) are drivingly connected by a transmission belt (17).

3. The automotive wire harness stretching and torsion test device according to claim 2, characterized in that, The testing mechanism (6) includes a U-shaped frame (21) arranged in an inverted manner. The bottom end of the U-shaped frame (21) penetrates through the sliding hole (20). First sliders (22) are fixedly mounted on the outer walls on both sides of the U-shaped frame (21). The first sliders (22) are slidably arranged on the first slide rails (19). A connecting plate (23) is fixedly mounted at the bottom end of the U-shaped frame (21). A guide post (24) is mounted at the center of the bottom end of the connecting plate (23). The guide post (24) is slidably arranged in the groove (13). A support frame (25) is fixedly mounted at the center of the top end of the U-shaped frame (21). A strip-shaped plate (26) is fixedly mounted at the top end of the support frame (25). Guide rails (28) arranged along the length direction are symmetrically mounted on the top of the strip-shaped plate (26) along the center. Guide seats (31) are slidably mounted on both of the guide rails (28). A torsion mechanism (29) and a locking mechanism (30) are respectively mounted on the two guide seats (31).

4. The automotive wire harness stretching and torsion testing device according to claim 3, wherein, A reinforcing rod (27) is also installed through the top of the support frame (25). Both ends of the reinforcing rod (27) are fixedly installed at the bottom of the strip plate (26). Fixed plates (32) are fixedly installed at the tops of the guide seats (31). A vertical rod (33) is fixedly installed at the top end of the fixed plate (32). The top of the vertical rod (33) passes through the strip hole (8). A guide roller (34) is also rotatably installed on the outer part of the vertical rod (33). The guide roller (34) rolls in the strip hole (8). A support plate (35) is fixedly installed at the top end of the vertical rod (33). The torsion mechanism (29) and the locking mechanism (30) are respectively installed on the corresponding support plates (35).

5. The automotive wire harness stretching and torsion testing device according to claim 1, wherein The wire clamp (39) includes an outer frame (40). A fitting sleeve (41) is fixedly installed in the middle of one end of the outer frame (40). The fitting sleeve (41) is fixedly installed at the end of the output shaft of the transmission box (37). A fixed block (42) is fixedly installed at the end of the outer frame (40) away from the fitting sleeve (41). A wire clamping groove (43) is formed at the top of the end of the fixed block (42) away from the outer frame (40). A threaded hole (44) is formed in the fixed block (42) and is arranged opposite to the fitting sleeve (41). The threaded hole (44) communicates with the wire clamping groove (43). A threaded rod (45) is installed through the threaded hole (44) in a threaded manner. A jack (49) is formed in the center of the threaded rod (45). A plug rod (47) is inserted through the jack (49). One end of the plug rod (47) is inserted into the fitting sleeve (41). A push-pull plate (50) is fixedly installed at the other end of the plug rod (47). The push-pull plate (50) is arranged in the wire clamping groove (43). Two wire clamping blocks (52) are symmetrically installed in the wire clamping groove (43). The wire clamping groove (43) is inclined and gradually narrowed from the bottom to the opening. The side walls of the two wire clamping blocks (52) away from each other are in contact with the side wall of the wire clamping groove (43). A notch groove (54) is formed on the opposite end faces of the two wire clamping blocks (52). An arc groove (55) is formed on the side wall of the notch groove (54) close to the threaded hole (44). A clamping plate (51) is fixedly installed at the end of the push-pull plate (50) away from the plug rod (47). The clamping plate (51) is clamped in the notch groove (54).

6. The automotive wiring harness stretching and torsion testing device according to claim 5, characterized in that An end of the threaded rod (45) close to the fitting sleeve (41) is fixedly installed with a turning handle (46) on the outside, a turning knob (48) is fixedly installed on the outside of the turning handle (46), anti-slip threads (53) are provided on the opposite side surfaces of the two wire clamping blocks (52), a limiting hole (57) is provided at the bottom of the wire clamping groove (43), the limiting hole (57) is arranged along the length direction of the side wall of the wire clamping groove (43), a sliding rod (56) is fixedly installed on an end surface of the wire clamping block (52) facing the limiting hole (57), the sliding rod (56) is slidably arranged in the limiting hole (57), locking grooves (58) are further provided on both sides of the wire clamping groove (43) on the fixed block (42), locking blocks (59) are fixedly installed in the locking grooves (58), and one end of the locking block (59) protrudes out of the locking groove (58).

7. An automotive wire harness stretching and torsion testing device according to claim 6, characterized in that, An extension block (73) is further fixedly installed on the vertical plate (61), a guide sleeve (74) is installed through the extension block (73), the pressing rod (69) is arranged through the guide sleeve (74), a pressing groove (75) is provided at the top of the base (68), the pressing groove (75) is arranged opposite to the pressing block (70), an assembly shaft (76) is further fixedly installed on the vertical plate (61), the assembly shaft (76) is arranged between the two second slide rails (63), an eccentric wheel (77) is rotatably installed on the outside of the assembly shaft (76), an arc-shaped hole (79) arranged around the assembly shaft (76) is provided on the eccentric wheel (77), a limiting shaft (80) is further fixedly installed on the vertical plate (61), the limiting shaft (80) is slidably arranged in the arc-shaped hole (79), and a handle (78) is fixedly installed on the outer wall of the eccentric wheel (77).

8. A testing method for the automotive wire harness stretching and torsion testing device according to claim 7, characterized in that, It includes the following steps: S1. Adjust the distance between the twisting mechanism (29) and the locking mechanism (30) according to the length of the wire harness to be tested; S2. Fix one end of the wire harness between the pressing block (70) and the pressing groove (75), and fix the other end of the wire harness through the wire clamp (39); S3. Start the adjusting motor (5), and perform a tensile test on the wire harness by rotating the adjusting roller (12); S4. Start the twisting motor (38), and perform a twisting test on the wire harness while the wire harness is being stretched in step S3.

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