A fatigue testing apparatus for stainless steel wire for automobiles
By designing multiple sets of support rods and motor-driven sliding seats, combined with the fixing method of pressure plates and magnetic blocks, the problem of wire harnesses falling off during testing was solved, enabling stable testing and data recording of the fatigue resistance performance of wire harnesses, and adapting to the testing needs of wire harnesses of different lengths.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGYIN CHUNRUI METAL PROD CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-19
AI Technical Summary
Existing fatigue testing equipment for stainless steel wires used in automobiles is prone to wire harnesses detaching from both ends of the testing equipment during repeated testing, leading to unstable testing and making it difficult to effectively evaluate their fatigue resistance.
A fatigue testing device for stainless steel wires used in automobiles was designed. The device uses multiple sets of support rods to allow the wire harness to be wound around repeatedly, increasing the contact area with the fixed component. It is then fixed by pressing with a pressure plate. Combined with the repeated sliding of the sliding seat driven by a motor, and the tensile module recording the tensile value in real time, the device tests the fatigue resistance of the wire harness. At the same time, magnetic blocks and hooks are used to classify and organize the wire harness and enhance its stability.
It effectively reduces the phenomenon of wire harnesses loosening or slipping during testing, can accurately detect the fatigue resistance of wire harnesses, provide reliability judgment, and adapt to the testing needs of wire harnesses of different lengths, thereby improving the safety of testing and the accuracy of data recording.
Smart Images
Figure CN224383031U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire harness testing, specifically a fatigue testing device for stainless steel wires used in automobiles. Background Technology
[0002] Stainless steel wire for automobiles is a slender wire made of stainless steel through processes such as cold drawing, annealing, and surface treatment. It has high strength, corrosion resistance, and fatigue resistance, and is widely used in key parts of automobiles such as braking systems, door lock mechanisms, seat adjustments, and sunroof drives. As a core component for force transmission or structural support, its performance directly affects the safety and durability of automobiles.
[0003] The production of automotive stainless steel wire uses stainless steel wire rod as raw material. First, the surface oxide scale is removed by pickling. Then, it is drawn to the target diameter through a cold drawing process to improve strength. After that, it is annealed to eliminate processing stress. Finally, it undergoes surface treatment to enhance corrosion resistance, forming finished wire that can be used in key automotive components.
[0004] After the production of automotive stainless steel wire is completed, samples are extracted from it. Existing testing equipment tends to cause the wire harness to detach from both ends of the testing equipment after repeated fatigue tests. Therefore, a fatigue testing device for automotive stainless steel wire is proposed to address the above problem. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A fatigue testing device for stainless steel wire used in automobiles, comprising a workbench; a first support plate fixedly connected to the top of the workbench; a motor fixedly connected to the side wall of the first support plate; a screw fixedly connected to the output end of the motor; a slide rail fixedly connected to the top of the workbench; a sliding seat slidably connected to the top of the slide rail; a screw threadedly connected to the sliding seat; a fixed platform fixedly connected to the side wall of the sliding seat; multiple sets of support rods fixedly connected to the top of the fixed platform; a cylinder fixedly connected to the top of the sliding seat; a pressure plate fixedly connected to the output end of the cylinder; and a second support plate fixedly connected to the top of the workbench. The second support plate has a tension module fixed to its side wall. Multiple sets of support rods allow the wire harness to be wound multiple times, increasing the contact area between the wire harness and the fixed component. Combined with the pressure plate descending and squeezing to fix it, this reduces the likelihood of the wire harness loosening or slipping during repeated pulling tests. The motor drives the sliding seat to slide repeatedly, and the repeated pulling of the wire harness can test its fatigue resistance, thereby judging its reliability in long-term use. The tension module can record the tension value during the pulling process in real time, which can provide data for subsequent analysis of wire harness quality defects. The sliding seat can adjust the distance between the support rod and the tension module by sliding at the top of the slide rail, and can also adapt to the testing needs of wire harnesses of different lengths.
[0007] Preferably, a support frame is fixedly connected to the side wall of the second support plate; a pin is fixedly connected to the top of the support frame; the pin is slidably connected to the support frame; a pressure block is fixedly connected to the bottom of the pin; by pushing the pin, the pressure block is pressed down on the wire harness in the middle of the tension module, which can press the wire harness tightly onto the tension module and reduce the wire harness from falling off the tension module due to force during repeated pulling tests.
[0008] Preferably, a third support plate is fixedly connected to the top of the workbench; the third support plate is located on one side of the slide rail; a magnetic block is fixedly connected to the side wall of the third support plate; multiple sets of hooks are fixedly connected to the side wall of the magnetic block; by hanging the wire harness to be tested in the middle of the multiple sets of hooks, the wire harness to be tested can be classified and sorted, reducing the wire harness from getting tangled together, and the magnetic block's attraction to the wire harness can enhance the stability of the wire harness when it is placed on the hooks.
[0009] Preferably, a protective cover is fixed to the top of the workbench; a sliding plate is slidably connected to the side wall of the protective cover; an observation window is provided in the middle of the sliding plate; by blocking the broken wire harness inside through the protective cover, the broken wire harness can be reduced to splash and cause damage to the surrounding area, and the safety of the testing process can be increased.
[0010] Preferably, a sponge is fixedly connected to the side wall of the sliding seat; the sponge is slidably connected to the screw and the slide rail; a feed inlet is fixedly connected to the side wall of the sliding seat; the feed inlet is connected to the sponge; the sponge can clean the surface of the screw and the slide rail by following the movement of the sliding seat, which can reduce the sliding obstruction caused by contaminants during sliding and increase the smoothness of sliding; the feed inlet injects lubricant into the sponge, which can reduce the friction between the sliding seat, the slide rail and the screw.
[0011] Preferably, a fixing seat is fixedly connected to the side wall of the protective cover; a collection box is provided at the top of the fixing seat; a pair of handles are fixedly connected to the side wall of the collection box; after the wire harness has been tested, it is placed inside the collection box, which can collect the wire harness in a concentrated manner. Applying a pulling force to the handles can move the collection box to the recycling point, which can increase the transfer efficiency of the wire harness.
[0012] The advantages of this utility model are:
[0013] 1. The fatigue testing equipment for stainless steel wire used in automobiles described in this utility model allows the wire harness to be wound multiple times using multiple sets of support rods, increasing the contact area between the wire harness and the fixed component. Combined with the downward pressing and fixing of the pressure plate, this reduces the likelihood of loosening or slippage of the wire harness during repeated tensile testing. The motor drives the sliding seat to slide repeatedly, subjecting the wire harness to multiple pulls, which can detect the fatigue resistance of the wire harness and thus determine its reliability in long-term use. The tensile module can record the tensile force value in real time during the pulling process, providing data for subsequent analysis of wire harness quality defects. The sliding seat can adjust the distance between the support rod and the tensile module by sliding at the top of the slide rail, and can also adapt to the testing needs of wire harnesses of different lengths.
[0014] 2. The fatigue testing equipment for stainless steel wires used in automobiles described in this utility model can classify and organize the wire harnesses to be tested by hanging them in the middle of multiple sets of hooks, thereby reducing the tangling of the wire harnesses. The magnetic blocks can enhance the stability of the wire harnesses when they are placed on the hooks. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the main body of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the pressure block in this utility model;
[0018] Figure 3 This is a schematic diagram of the support rod in this utility model;
[0019] Figure 4 This is a schematic diagram of the hook structure in this utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the collection box in this utility model.
[0021] In the diagram: 1. Workbench; 11. First support plate; 12. Screw; 13. Slide rail; 14. Sliding seat; 15. Fixed platform; 16. Support rod; 17. Cylinder; 18. Pressure plate; 19. Second support plate; 110. Tension module; 111. Motor; 2. Support frame; 21. Pin; 22. Pressure block; 3. Third support plate; 31. Magnetic block; 32. Hook; 4. Protective cover; 41. Slide plate; 42. Observation window; 5. Sponge; 51. Feed inlet; 6. Fixed seat; 61. Collection box; 62. Handle. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 5 As shown in the embodiment of this utility model, a fatigue testing device for stainless steel wire used in automobiles includes a workbench 1; a first support plate 11 is fixedly connected to the top of the workbench 1; a motor 111 is fixedly connected to the side wall of the first support plate 11; a screw 12 is fixedly connected to the output end of the motor 111; a slide rail 13 is fixedly connected to the top of the workbench 1; a sliding seat 14 is slidably connected to the top of the slide rail 13; the screw 12 is threadedly connected to the sliding seat 14; a fixed platform 15 is fixedly connected to the side wall of the sliding seat 14; and multiple sets of supports are fixedly connected to the top of the fixed platform 15. Support rod 16; cylinder 17 is fixedly connected to the top of the sliding seat 14; pressure plate 18 is fixedly connected to the output end of cylinder 17; second support plate 19 is fixedly connected to the top of the workbench 1; tension module 110 is fixedly connected to the side wall of the second support plate 19; during operation, one end of the wire harness to be tested is fixed to the position of tension module 110, and then the other end of the wire harness is wound from the first support rod 16, and the wire harness is alternately wound around the middle of multiple sets of support rods 16. Then, the cylinder 17 is pushed to drive the pressure plate 18 to descend, and the pressure plate 18 wraps the middle of the support rod 16. The wire harness is compressed and fixed, and the support rod 16 can be inserted into the pressure plate 18. After the wire harness is fixed, the motor 111 can be started to drive the screw 12 to rotate. The rotation of the screw 12 can drive the sliding seat 14 to slide above the slide rail 13, straightening the wire harness. Under the continuous movement of the sliding seat 14, the wire harness is pulled. Subsequently, the tension module 110 can record the tension value in real time. By repeatedly driving the sliding seat 14 to move repeatedly, the wire harness can be repeatedly pulled and tested. Multiple sets of support rods 16 can allow the wire harness to be wound multiple times, increasing the contact area between the wire harness and the fixed component. The pressure plate 18 descends and presses to fix the wire harness, reducing the possibility of loosening or slippage during repeated pulling tests. The motor 111 drives the sliding seat 14 to slide repeatedly, and the repeated pulling of the wire harness can test its fatigue resistance, thereby judging its reliability in long-term use. The tension module 110 can record the tension value in real time during the pulling process, which can provide data for subsequent analysis of wire harness quality defects. The sliding seat 14 slides at the top of the slide rail 13 to adjust the distance between the support rod 16 and the tension module 110, which can also adapt to the testing needs of wire harnesses of different lengths.
[0025] like Figures 1 to 2 As shown, a support frame 2 is fixedly connected to the side wall of the second support plate 19; a pin 21 is fixedly connected to the top of the support frame 2; the pin 21 is slidably connected to the support frame 2; a pressure block 22 is fixedly connected to the bottom of the pin 21; during operation, when the wire harness is sleeved on the tension module 110, the pin 21 can be moved, and then the pressure block 22 presses down on the wire harness in the middle of the tension module 110, so that the wire harness can be stabilized in the middle of the tension module 110 during testing; by pushing the pin 21 to make the pressure block 22 press down on the wire harness in the middle of the tension module 110, the wire harness can be pressed tightly on the tension module 110, reducing the wire harness from falling off the tension module 110 due to force during repeated pulling tests.
[0026] like Figure 1 and Figure 4 As shown, a third support plate 3 is fixedly connected to the top of the workbench 1; the third support plate 3 is located on one side of the slide rail 13; a magnetic block 31 is fixedly connected to the side wall of the third support plate 3; multiple sets of hooks 32 are fixedly connected to the side wall of the magnetic block 31; during operation, multiple sets of wire harnesses are often tested when testing wire harnesses. At this time, the wire harness to be tested can be hung in the middle of the hook 32, and then the magnetic block 31 can attract the wire harness; by hanging the wire harness to be tested in the middle of multiple sets of hooks 32, the wire harness to be tested can be classified and sorted, reducing the wire harnesses from tangling together. The attraction of the magnetic block 31 to the wire harness can enhance the stability of the wire harness when it is placed in the hook 32.
[0027] like Figure 1 As shown, a protective cover 4 is fixedly attached to the top of the workbench 1; a sliding plate 41 is slidably connected to the side wall of the protective cover 4; an observation window 42 is provided in the middle of the sliding plate 41; during operation, when testing the wire harness, the wire harness may break due to tension or other reasons. At this time, the protective cover 4 can prevent the wire harness from flying and block the broken wire harness inside the protective cover 4. The sliding plate 41 can be opened during testing, and the observation window 42 can facilitate observation of the wire harness status during testing; by blocking the broken wire harness inside the protective cover 4, the risk of wire harness breakage and splashing, and damage to the surrounding area can be reduced, thus increasing the safety of the testing process.
[0028] like Figures 1 to 2 As shown, a sponge 5 is fixedly connected to the side wall of the sliding seat 14; the sponge 5 is slidably connected to the screw 12 and the slide rail 13; a feed inlet 51 is fixedly connected to the side wall of the sliding seat 14; the feed inlet 51 is connected to the sponge 5; during operation, after prolonged use, the surfaces of the screw 12 and the slide rail 13 will have a lot of contaminants remaining. At this time, the sponge 5 can follow the sliding seat 14 to clean the screw 12 and the slide rail 13. Lubricating fluid is added into the feed inlet 51, and the lubricating fluid can flow into the sponge 5 from the feed inlet 51 to lubricate the screw 12 and the slide rail 13 when the sliding seat 14 moves; by the sponge 5 following the movement of the sliding seat 14 to clean the surfaces of the screw 12 and the slide rail 13, the sliding seat 14 can be reduced from being obstructed by contaminants during sliding, and the smoothness of sliding can be increased. The lubricating fluid injected into the sponge 5 through the feed inlet 51 can reduce the friction between the sliding seat 14, the slide rail 13, and the screw 12.
[0029] like Figure 1 and Figure 5As shown, a fixing seat 6 is fixedly connected to the side wall of the protective cover 4; a collection box 61 is provided at the top of the fixing seat 6; a pair of handles 62 are fixedly connected to the side wall of the collection box 61; during operation, the tested wire harness can be placed inside the collection box 61, and the collection box 61 can be moved from above the fixing seat 6 by applying a pulling force to the handles 62, thus moving the collection box 61 to the wire harness recycling point; by placing the tested wire harness inside the collection box 61, the wire harness can be collected in a concentrated manner, and the collection box 61 can be moved to the recycling point by applying a pulling force to the handles 62, which can increase the transfer efficiency of the wire harness.
[0030] Working principle: One end of the wire harness to be tested is fixed to the tension module 110. Then, the other end of the wire harness is wound around the first support rod 16, alternately winding the wire harness around the middle of multiple sets of support rods 16. Then, the cylinder 17 is pushed to drive the pressure plate 18 to descend. The pressure plate 18 squeezes and fixes the wire harness wound in the middle of the support rods 16. The support rods 16 can be inserted into the pressure plate 18. After the wire harness is fixed, the motor 111 can be started to drive the screw 12 to rotate. The rotation of the screw 12 can drive the sliding seat 14 to slide above the slide rail 13, straightening the wire harness. Under the continuous movement of the sliding seat 14, the wire harness is stretched. The tension module 110 can record the tensile force value in real time. The motor 111 repeatedly drives the sliding seat 14 to move, and the wire harness can be repeatedly stretched. When the wire harness is put on the tension module 110, the pin 21 can be moved. Then, the pressure block 22 presses down the wire harness in the middle of the tension module 110, which can stabilize the wire harness during the test. In the middle of the tension module 110, multiple wire harnesses are often tested during the testing of wire harnesses. At this time, the wire harness to be tested can be hung in the middle of the hook 32, and then the magnetic block 31 can attract the wire harness. During the testing of the wire harness, the wire harness may break due to tension and other reasons. At this time, the protective cover 4 can prevent the wire harness from splashing and block the broken wire harness inside the protective cover 4. The slide plate 41 can be opened during the test, and the observation window 42 can facilitate the observation of the wire harness status during the test. After long-term use, the screw 12 and slide rail 13 will have a lot of contaminants on their surfaces. At this time, the sponge 5 can follow the sliding seat 14 to clean the screw 12 and slide rail 13. Lubricating fluid is added into the feed port 51. The lubricating fluid can flow into the sponge 5 from the feed port 51 and lubricate the screw 12 and slide rail 13 when the sliding seat 14 moves. The tested wire harness can be placed inside the collection box 61. Applying the pulling force to the handle 62 can move the collection box 61 from above the fixed seat 6 and move the collection box 61 to the wire harness recycling point.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A fatigue testing device for stainless steel wire used in automobiles, characterized in that: The system includes a workbench (1); a first support plate (11) is fixedly connected to the top of the workbench (1); a motor (111) is fixedly connected to the side wall of the first support plate (11); a screw (12) is fixedly connected to the output end of the motor (111); a slide rail (13) is fixedly connected to the top of the workbench (1); a sliding seat (14) is slidably connected to the top of the slide rail (13); the screw (12) is threadedly connected to the sliding seat (14); a fixed platform (15) is fixedly connected to the side wall of the sliding seat (14); multiple sets of support rods (16) are fixedly connected to the top of the fixed platform (15); a cylinder (17) is fixedly connected to the top of the sliding seat (14); a pressure plate (18) is fixedly connected to the output end of the cylinder (17); a second support plate (19) is fixedly connected to the top of the workbench (1); a tension module (110) is fixedly connected to the side wall of the second support plate (19).
2. The fatigue testing equipment for stainless steel wire used in automobiles according to claim 1, characterized in that: The second support plate (19) has a support frame (2) fixedly connected to its side wall; a pin (21) is fixedly connected to the top of the support frame (2); the pin (21) is slidably connected to the support frame (2); and a pressure block (22) is fixedly connected to the bottom of the pin (21).
3. The fatigue testing equipment for stainless steel wire used in automobiles according to claim 2, characterized in that: The top of the workbench (1) is fixedly connected to a third support plate (3); the third support plate (3) is located on one side of the slide rail (13); a magnetic block (31) is fixedly connected to the side wall of the third support plate (3); and multiple sets of hooks (32) are fixedly connected to the side wall of the magnetic block (31).
4. The fatigue testing equipment for stainless steel wire used in automobiles according to claim 3, characterized in that: The top of the workbench (1) is fixed with a protective cover (4); the side wall of the protective cover (4) is slidably connected with a sliding plate (41); the middle of the sliding plate (41) is provided with an observation window (42).
5. The fatigue testing equipment for stainless steel wire used in automobiles according to claim 4, characterized in that: The sliding seat (14) has a sponge (5) fixedly attached to its side wall; the sponge (5) is slidably connected to the screw (12) and the slide rail (13); the sliding seat (14) has a feed inlet (51) fixedly attached to its side wall; the feed inlet (51) is connected to the sponge (5).
6. The fatigue testing equipment for stainless steel wire used in automobiles according to claim 5, characterized in that: The protective cover (4) has a fixed seat (6) fixed to its side wall; a collection box (61) is provided at the top of the fixed seat (6); and a pair of handles (62) are fixed to the side wall of the collection box (61).