Automobile wire harness tensile torsion test device and test method
The integrated automotive wiring harness tensile and torsion testing device solves the problem of step-by-step testing in existing technologies, enabling synchronous testing and high-temperature environment simulation, thereby improving the accuracy and precision of the test.
Patent Information
- Application Number
- CN202511675170.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-15
- Publication Date
- 2026-03-03
AI Technical Summary
Existing automotive wiring harness testing equipment requires tensile and torsion tests to be performed step-by-step on different devices, which increases testing time and the room temperature test does not meet the working environment of the wiring harness, resulting in low test accuracy.
Design an integrated automotive wiring harness tensile and torsion testing device, including a clamping component, a locking component, a testing component, and a heating component, which can perform tensile and torsion tests simultaneously on the same device and simulate a high-temperature environment through the heating component.
It enables simultaneous tensile and torsion testing of wire harnesses, reducing testing steps and time costs, improving testing accuracy and precision, and conforming to the actual working environment of wire harnesses.
Smart Images
Figure CN121595347A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automotive wiring harness performance testing technology, specifically to an automotive wiring harness tensile and torsion testing device and method. Background Technology
[0002] Automotive wiring harnesses are the main network of automotive circuits. As the core component connecting various electrical components inside the vehicle, their main function is to transmit electrical signals and energy. During vehicle operation, wiring harnesses are subjected to complex conditions such as high temperature, vibration, and friction for extended periods. If the wiring harness has problems such as insufficient tensile strength, poor torsional resistance, or performance degradation under high temperature conditions, it may lead to signal transmission interruption, short circuit, or even fire. Therefore, before automotive wiring harnesses leave the factory and before vehicle assembly, their tensile performance, torsional performance, and stability under high temperature conditions must be rigorously tested to verify whether they meet design standards and actual usage requirements.
[0003] Existing automotive wiring harness testing equipment is mostly single-function devices, mainly including independent tensile testing machines and torsion testing machines. Among them, the tensile testing machine clamps both ends of the wiring harness and applies axial tension to detect the maximum tensile strength and elongation at break of the wiring harness; the torsion testing machine requires manual fixing of the wiring harness on a rotating fixture, and applies torque by driving the fixture to rotate, to test the torsional limit and torsional deformation recovery ability of the wiring harness.
[0004] Existing automotive wiring harness testing equipment can perform automotive wiring harness testing well, but there are still some shortcomings in its use. The tensile and torsion tests of the existing technology need to be carried out step by step on different equipment, which cannot achieve synchronous testing. This not only increases the testing time, but may also affect the test accuracy due to secondary stress during the transfer of the wiring harness. In addition, the existing technology tests automotive wiring harnesses at room temperature, which is not in line with the working environment of automotive wiring harnesses, resulting in low test accuracy.
[0005] To address the shortcomings of existing technologies, this invention proposes a testing device and method for automotive wiring harness tensile and torsion testing. Summary of the Invention
[0006] The purpose of this invention is to provide an automotive wiring harness tensile and torsion testing device and method, solving the following technical problems: 1. Existing tensile and torsion tests require separate steps on different equipment, which increases testing time; 2. Existing technology tests automotive wiring harnesses at room temperature, which does not meet the working environment of automotive wiring harnesses, resulting in low test accuracy.
[0007] The objective of this invention can be achieved through the following technical solution: an automotive wiring harness tensile and torsion testing device, comprising a workbench, a support side plate fixedly connected to the left side of the workbench, a control console fixedly connected to the top of the support side plate, a clamping assembly and a locking assembly provided on the top of the workbench, a testing assembly provided inside the workbench, and a heating assembly provided on the top of the workbench; The clamping assembly is used to stably fix one end of the automotive wiring harness so that it can be driven by the test assembly for testing. The locking component can stably clamp the other end of the automotive wiring harness to prevent it from coming loose during testing. The test assembly is used to perform tensile tests on automotive wiring harnesses fixed to the clamping assembly and the locking assembly, and can also perform torsion tests simultaneously with the tensile tests. The heating component is used to simulate the high-temperature environment of automotive wiring harnesses during operation, thereby improving the accuracy of the test.
[0008] As a preferred embodiment of the present invention: the clamping assembly includes a plurality of movable frames, each of which is slidably connected to the top of the workbench. A rotating disk is rotatably connected to the right side of each of the movable frames. A clamping plate is fixedly connected to the right side of the rotating disk. Support frames are fixedly connected to both the upper and lower ends of the clamping plate. Connecting frames are rotatably connected inside each of the two support frames. Connecting rods are rotatably connected to one end of each of the two connecting frames. A gripper is rotatably connected to the other end of each of the two connecting rods. A telescopic cylinder is installed at the other end of each of the two connecting frames. The locking assembly includes multiple movable frames, each of which is slidably connected to the top of the workbench. Each of the multiple movable frames is fixedly connected to a fixed frame at its top. A rotating ring is rotatably connected to the left side of the fixed frame. Two main connecting rods are rotatably connected to the rear end of the rotating ring. A middle connecting rod is rotatably connected to the front end of the middle part of the two main connecting rods. A clamping arm is rotatably connected to the front end of the bottom of the two main connecting rods.
[0009] As a preferred embodiment of the present invention: the test assembly includes a bidirectional threaded rod, which is rotatably connected inside the workbench. Two moving blocks are threadedly connected to the outer circumference of the bidirectional threaded rod. Multiple driving rods are fixedly connected to the top of the two moving blocks. The multiple driving rods are respectively fixedly connected to the bottom of multiple moving frames one and multiple moving frames two. A motor is installed on the right side of the workbench, and the output end of the motor is fixedly connected to the right side of the bidirectional threaded rod. The test assembly also includes multiple lifting plates, all of which are slidably connected inside the workbench. Each of the multiple lifting plates has a rack fixedly connected to its top and a telescopic cylinder II fixedly connected to its bottom. Each of the multiple telescopic cylinder II is fixedly connected inside the workbench. The test assembly also includes multiple rotating shafts and multiple worm gears. The multiple rotating shafts are respectively fixedly connected to the left side of the multiple rotating disks. Each of the multiple rotating shafts is fixedly connected to a worm wheel on its outer periphery. The multiple worm gears are respectively rotatably connected to the interior of the multiple movable frames. The multiple worm wheels and the multiple worm gears mesh with each other. Each end of the multiple worm gears is fixedly connected to a gear.
[0010] As a preferred embodiment of the present invention: the heating assembly includes a constant temperature chamber, the constant temperature chamber is fixedly connected to the top of the workbench, a fan is installed on the top of the constant temperature chamber, a mounting bracket is fixedly connected inside the constant temperature chamber, a heater is installed inside the mounting bracket, and the fan is located directly above the heater.
[0011] As a preferred embodiment of the present invention: two limiting blocks are fixedly connected to the right side of the clamping plate, and the two clamps are slidably connected inside the two limiting blocks respectively.
[0012] As a preferred embodiment of the present invention: a synchronizing rod is fixedly connected inside the clamping plate, a sliding block is slidably connected to the outer periphery of the synchronizing rod, two synchronizing frames are fixedly connected to the outer periphery of the sliding block, a connecting rod two is rotatably connected to one side of the two synchronizing frames, a support rod is rotatably connected to the other end of each of the two connecting rod two, and the other ends of the two support rods are respectively fixedly connected to one side of the two connecting frames facing each other.
[0013] As a preferred embodiment of the present invention: a tripod is fixedly connected to both the front and rear sides of the clamping plate, and both of the tripods are fixedly connected to the right side of the rotating disk.
[0014] As a preferred embodiment of the present invention: two fixing rods are fixedly connected to the rear end of the clamping arm, and a support block is fixedly connected to the outer periphery of each of the two fixing rods. A spring is fixedly connected to the other end of each of the two support blocks, and the other ends of the two springs are respectively fixedly connected inside the two main connecting rods.
[0015] As a preferred embodiment of the present invention: two limiting rods are fixedly connected inside the worktable, and the two moving blocks are slidably connected to the outer periphery of the two limiting rods. Multiple sliding rods are fixedly connected inside the worktable, and multiple driving rods are slidably connected to the outer periphery of the multiple sliding rods respectively.
[0016] A method for testing the tensile and torsional tension of automotive wiring harnesses, comprising: Step 1: Place multiple automotive wiring harnesses between two clamps. Then, activate telescopic cylinder 1 to rotate the two connecting frames around support frame 1. As the connecting frames move, they also move the support rod, which in turn moves the sliding block around the circumference of the synchronizing rod via connecting rod 2. This allows the two connecting frames to move synchronously. When the connecting frames move, the clamps move via connecting rod 1, thus fixing one end of the automotive wiring harness in place. Step two, push the clamping arm to the right to separate the middle connecting rod and the clamping arm, then place the other end of the car wiring harness between the middle connecting rod and the clamping arm. At this time, release the force on the clamping arm, the spring releases the tension, thereby allowing the middle connecting rod and the clamping arm to return to their original positions, and clamp the other end of the car wiring harness. Step 3: After the two ends of the automotive wiring harness are fixed, the motor drives the bidirectional threaded rod to rotate, thereby driving the two moving blocks to move in opposite directions. This, in turn, drives the moving frame one and the moving frame two to move, thus stretching the automotive wiring harness. When the moving frame one moves, the rack and pinion mesh with the gear, thereby driving the worm gear to rotate. This, in turn, drives the rotating shaft to rotate through the meshing of the worm wheel and the worm gear, causing the rotating disk to rotate, thus performing a torsion test on the stretched automotive wiring harness. Step four: During testing, the heater and fan can be turned on to heat the inside of the constant temperature chamber, so that the temperature of the constant temperature chamber reaches the temperature when the automotive wiring harness is working, thereby improving the accuracy of the test.
[0017] The beneficial effects of this invention are: (1) The present invention drives the connecting frame to rotate through the telescopic cylinder of the clamping component, and the two connecting frames move synchronously in conjunction with the synchronizing rod, the sliding block and the connecting rod 2, thereby driving the clamp to stably clamp one end of the automotive wiring harness; at the same time, the locking component releases the tension through the spring, pushes the main connecting rod and the clamping arm to reset, and presses the other end of the wiring harness. The bidirectional stable fixing structure can not only prevent the wiring harness from coming out of the clamping position during the test, but also ensure the consistency of the force on the wiring harness in the tensile and torsion tests, laying the foundation for the accuracy of subsequent test data.
[0018] (2) The present invention drives the bidirectional threaded rod to rotate through the motor of the test component, so that the moving block pulls the moving frame one and the moving frame two to move in opposite directions through the driving rod, thereby realizing the wire harness tensile test. At the same time, when the moving frame one moves, the gears at both ends of the rack and the worm gear mesh, driving the worm gear to rotate, and then driving the rotating disk to rotate through the worm wheel and worm gear transmission, thereby realizing the wire harness torsion test. This not only integrates the tensile and torsion tests and performs them simultaneously, but also reduces the steps and time costs of separate tests and improves the reliability of the test process.
[0019] (3) The present invention generates heat through the heater of the heating component, and the hot air is evenly delivered to the inside of the constant temperature chamber by the fan, so that the temperature inside the constant temperature chamber reaches the temperature environment when the automotive wiring harness is actually working. The design that simulates the real working scenario can not only avoid the deviation between the test results at room temperature and the actual performance of the wiring harness, but also ensure the stability of temperature parameters during the test through the constant temperature environment, further improving the reference value of the test results for actual applications and making the test accuracy more in line with actual needs. Attached Figure Description
[0020] The invention will now be further described with reference to the accompanying drawings.
[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the workbench in this invention; Figure 3 This is a schematic diagram of the clamping component in the present invention; Figure 4 This is a schematic diagram of the clamping plate in this invention; Figure 5 This is a schematic diagram of the movable frame one in this invention; Figure 6 This is a schematic diagram of the locking component in this invention; Figure 7 This is a schematic diagram of the connecting rod in this invention; Figure 8 This is a schematic diagram of the clamping arm in this invention; Figure 9 This is a schematic diagram of the main connecting rod in this invention; Figure 10 This is a schematic diagram of the test components in this invention; Figure 11 This is a schematic diagram of the rack in this invention; Figure 12 This is a schematic diagram of the movable block in this invention; Figure 13 This is a schematic diagram of the heating component in this invention.
[0022] Attached diagrams: 1. Workbench; 2. Support side plate; 3. Control console; 4. Clamping assembly; 5. Locking assembly; 6. Testing assembly; 7. Heating assembly; 401. Movable frame one; 402. Rotary disc; 403. Clamping plate; 404. Support frame one; 405. Connecting frame; 406. Connecting rod one; 407. Gripper; 408. Limiting block; 409. Synchronizing rod; 410. Sliding block; 411. Synchronizing frame; 412. Connecting rod two; 413. Support rod; 414. Telescopic cylinder one; 415. Triangular frame; 501. Movable frame two; 502. Fixed frame; 503. Rotating ring; 504. Main connecting rod; 505. Middle connecting rod 506. Clamping arm; 507. Fixed rod; 508. Support block; 509. Spring; 601. Double-ended threaded rod; 602. Moving block; 603. Driving rod; 604. Motor; 605. Limiting rod; 606. Slide rod; 607. Lifting plate; 608. Rack; 609. Telescopic cylinder II; 610. Rotating shaft; 611. Worm gear; 612. Worm; 613. Gear; 701. Constant temperature chamber; 702. Fan; 703. Mounting bracket; 704. Heater. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0024] Please see Figures 1-13 As shown, the present invention is a tensile and torsional testing device for automotive wiring harnesses, including a workbench 1, a support side plate 2 fixedly connected to the left side of the workbench 1, a control console 3 fixedly connected to the top of the support side plate 2, a clamping assembly 4 and a locking assembly 5 provided on the top of the workbench 1, a testing assembly 6 provided inside the workbench 1, and a heating assembly 7 provided on the top of the workbench 1. Specifically, the workbench 1 serves as the basic supporting structure of the device, used to install the support clamping assembly 4, locking assembly 5, heating assembly 7, and internal testing assembly 6; the support side plate 2 is used to fix and support the control console 3, providing stable installation support for the control console 3; the control console 3 is used to control the operation of components such as the testing assembly 6 and heating assembly 7, realizing operations such as test start / stop and parameter adjustment; the clamping assembly 4 is used to stably fix one end of the automotive wiring harness, so that it can be driven by the testing assembly 6 for testing; the locking assembly 5 can stably press the other end of the automotive wiring harness to prevent it from coming off during testing; the testing assembly 6 is used to perform tensile testing on the automotive wiring harness fixed on the clamping assembly 4 and locking assembly 5, and can also perform torsion testing at the same time as the tensile testing; the heating assembly 7 is used to simulate the high-temperature environment of the automotive wiring harness during operation, improving the accuracy of the test.
[0025] Please see Figures 3-4As shown, the clamping assembly 4 includes multiple movable frames 401, all of which are slidably connected to the top of the workbench 1. A rotating disk 402 is rotatably connected to the right side of each movable frame 401. A clamping plate 403 is fixedly connected to the right side of the rotating disk 402. Support frames 404 are fixedly connected to both the upper and lower ends of the clamping plate 403. Connecting frames 405 are rotatably connected inside each of the two support frames 404. Connecting rods 406 are rotatably connected to one end of each of the two connecting frames 405. A gripper 407 is rotatably connected to the other end of each of the two connecting rods 406. A telescopic cylinder 414 is installed at the other end of each of the two connecting frames 405. Two limiters are fixedly connected to the right side of the clamping plate 403. The two clamps 407 are slidably connected to the two limit blocks 408 respectively. The clamping plate 403 is fixedly connected to the inside of the synchronous rod 409. The outer periphery of the synchronous rod 409 is slidably connected to the sliding block 410. The outer periphery of the sliding block 410 is fixedly connected to two synchronous frames 411. The two synchronous frames 411 are rotatably connected to the two connecting rods 412 on the opposite side. The other end of the two connecting rods 412 is rotatably connected to the support rod 413. The other end of the two support rods 413 is fixedly connected to the two connecting frames 405 on the opposite side respectively. The clamping plate 403 is fixedly connected to the front and rear sides of the clamping plate 403. The two tripods 415 are fixedly connected to the right side of the rotating disk 402. Specifically, the movable frame 401 is slidably connected to the top of the workbench 1 to move other components of the clamping assembly 4. The rotating disk 402 is rotatably connected to the right side of the movable frame 401 to rotate the clamping plate 403. The clamping plate 403 is fixedly connected to the right side of the rotating disk 402, serving as the basic carrier for installing components such as the support frame 404, the limiting block 408, and the synchronizing rod 409. The support frame 404 is fixedly connected to the upper and lower ends of the clamping plate 403 to support the connecting frame 405. The connecting frame 405 is rotatably connected inside the support frame 404, transmitting power from one end to the telescopic cylinder 414, and driving the gripper 407 through the connecting rod 406. The connecting rod 406 is rotatably connected between the connecting frame 405 and the gripper 407 to transmit power from the connecting frame 405 to move the gripper 407. The gripper 407 is slidably connected inside the limiting block 408 to clamp one end of the automotive wiring harness. The telescopic cylinder 414 is installed on the connecting frame 405. At the other end, power is provided for the rotation of the connecting frame 405. The limiting block 408 is fixedly connected to the right side of the clamping plate 403, which limits the sliding direction of the gripper 407. The synchronizing rod 409 is fixedly connected inside the clamping plate 403, providing a sliding track for the sliding block 410. The sliding block 410 is slidably connected to the outer periphery of the synchronizing rod 409, which is used to drive the synchronizing frame 411 to move. The synchronizing frame 411 is fixedly connected to the outer periphery of the sliding block 410. The rotating support connecting rod 412 realizes the movement of two... The synchronous movement of the connecting frame 405 is achieved by connecting rod 412, which is rotatably connected between the synchronous frame 411 and the support rod 413, transmitting the power of the sliding block 410 to the support rod 413. The support rod 413 is fixedly connected to the opposite side of the connecting frame 405. The connecting rod 412 drives the connecting frame 405 to move synchronously. The tripod 415 is fixedly connected to the front and rear sides of the clamping plate 403 and connected to the rotating disk 402, which is used to enhance the connection stability between the clamping plate 403 and the rotating disk 402.
[0026] Please see Figures 6-9 As shown, the locking assembly 5 includes multiple movable frames 501, which are slidably connected to the top of the workbench 1. Each movable frame 501 is fixedly connected to a fixed frame 502 at its top. A rotating ring 503 is rotatably connected to the left side of the fixed frame 502. Two main connecting rods 504 are rotatably connected to the rear end of the rotating ring 503. A middle connecting rod 505 is rotatably connected to the front end of the middle part of the two main connecting rods 504. A clamping arm 506 is rotatably connected to the front end of the bottom of the two main connecting rods 504. Two fixed rods 507 are fixedly connected to the rear end of the clamping arm 506. Support blocks 508 are fixedly connected to the outer periphery of the two fixed rods 507. Springs 509 are fixedly connected to the other end of the two support blocks 508. The other ends of the two springs 509 are respectively fixedly connected to the inside of the two main connecting rods 504.
[0027] Specifically, the second movable frame 501 is slidably connected to the top of the worktable 1, used to drive the other parts of the locking assembly 5 to move. The fixed frame 502 is fixedly connected to the top of the second movable frame 501, providing rotational mounting support for the rotating ring 503. The rotating ring 503 is rotatably connected to the left side of the fixed frame 502, used to connect and drive the two main connecting rods 504 to rotate. The rear end of the main connecting rod 504 is rotatably connected to the rotating ring 503. The middle front end and the bottom front end are respectively rotatably connected to the middle connecting rod 505 and the clamping arm 506, used to transmit power to drive the middle connecting rod 505 and the clamping arm 506 to move. 05 is rotatably connected to the front end of the middle part of the main connecting rod 504, and works with the clamping arm 506 to clamp the other end of the automotive wiring harness. The clamping arm 506 is rotatably connected to the front end of the bottom of the main connecting rod 504, and is used to press the other end of the automotive wiring harness. The fixing rod 507 is fixedly connected to the rear end of the clamping arm 506, and is used to install the fixing support block 508. The support block 508 is fixedly connected to the outer periphery of the fixing rod 507, and is used to connect the spring 509. One end of the spring 509 is fixed on the support block 508, and the other end is fixed inside the main connecting rod 504. It can release tension to push the main connecting rod 504 and the clamping arm 506 to reset.
[0028] Please see Figures 10-12 As shown, the test assembly 6 includes a bidirectional threaded rod 601, which is rotatably connected inside the workbench 1. Two moving blocks 602 are threadedly connected to the outer periphery of the bidirectional threaded rod 601. Multiple driving rods 603 are fixedly connected to the top of the two moving blocks 602. The multiple driving rods 603 are respectively fixedly connected to the bottom of multiple moving frames 401 and multiple moving frames 501. A motor 604 is installed on the right side of the workbench 1. The output end of the motor 604 is fixedly connected to the right side of the bidirectional threaded rod 601. Two limiting rods 605 are fixedly connected inside the workbench 1. The two moving blocks 602 are slidably connected to the outer periphery of the two limiting rods 605. Multiple sliding rods 606 are fixedly connected inside the workbench 1. The multiple driving rods 603 are respectively slidably connected to the outer periphery of the multiple sliding rods 606. Specifically, the bidirectional threaded rod 601 is rotatably connected inside the worktable 1, and is used to drive the moving block 602, which is threaded to its outer periphery, to move through its own rotation. The moving block 602 is threaded to the outer periphery of the bidirectional threaded rod 601, and a driving rod 603 is fixed at its top. The driving rod 603 is used to transmit power to the driving rod 603 after being driven by the bidirectional threaded rod 601. The driving rod 603 is fixed at the top of the moving block 602 and is connected to the bottom of the first moving frame 401 and the second moving frame 501 respectively. It is used to transmit the power of the moving block 602 to drive the first moving frame 401 and the second moving frame 501 to move. The motor 604 is installed on the right side of the worktable 1 and its output end is connected to the bidirectional threaded rod 601. It is used to provide power to drive the bidirectional threaded rod 601 to rotate. The limiting rod 605 is fixed inside the worktable 1 and is slidably connected to the moving block 602. It is used to limit the movement direction of the moving block 602 to ensure its stable sliding. The sliding rod 606 is fixed inside the worktable 1 and is slidably connected to the driving rod 603. It is used to limit the movement direction of the driving rod 603 to ensure its stable sliding.
[0029] Please see Figures 11-12 As shown, the test assembly 6 also includes multiple lifting plates 607, which are slidably connected inside the workbench 1. Each of the multiple lifting plates 607 has a rack 608 fixedly connected to its top and a telescopic cylinder 609 fixedly connected to its bottom. Each of the multiple telescopic cylinders 609 is fixedly connected inside the workbench 1. Specifically, the lifting plate 607 is slidably connected inside the workbench 1, with a rack 608 fixed at the top and a telescopic cylinder 609 connected at the bottom. The rack 608 is driven up and down by the telescopic cylinder 609. The rack 608 is fixedly connected to the top of the lifting plate 607 and is used to mesh with the gear 613 in the test assembly 6 to transmit power. The telescopic cylinder 609 is fixedly connected inside the workbench 1 and connected to the lifting plate 607 at the top. It is used to provide power to drive the lifting plate 607 to slide, so that it can be controlled whether a torsion test is required during the tensile test.
[0030] Please see Figure 5 As shown, the test assembly 6 also includes multiple rotating shafts 610 and multiple worm gears 612. The multiple rotating shafts 610 are respectively fixedly connected to the left side of multiple rotating disks 402. Worm gears 611 are fixedly connected to the outer periphery of each of the multiple rotating shafts 610. The multiple worm gears 612 are respectively rotatably connected to the inside of multiple movable frames 401. The multiple worm gears 611 and the multiple worm gears 612 mesh with each other. Gears 613 are fixedly connected to both ends of each of the multiple worm gears 612.
[0031] Specifically, the rotating shaft 610 is fixedly connected to the left side of the rotating disk 402 to drive the rotating disk 402 to rotate. The worm gear 611 is fixedly connected to the outer circumference of the rotating shaft 610 and meshes with the worm 612 to transmit the power of the worm 612 to the rotating shaft 610. The worm 612 is rotatably connected inside the moving frame 401 to transmit power through meshing with the worm gear 611. The gear 613 is fixedly connected to both ends of the worm 612 to cooperate with the rack 608 in the test assembly 6 to transmit power and drive the worm 612 to rotate.
[0032] Please see Figure 13 As shown, the heating assembly 7 includes a constant temperature chamber 701, which is fixedly connected to the top of the workbench 1. A fan 702 is installed on the top of the constant temperature chamber 701. A mounting bracket 703 is fixedly connected inside the constant temperature chamber 701. A heater 704 is installed inside the mounting bracket 703. The fan 702 is located directly above the heater 704.
[0033] Specifically, the constant temperature chamber 701 is fixedly connected to the top of the workbench 1 to provide a closed space to maintain the temperature environment required for testing. The fan 702 is installed on the top of the constant temperature chamber 701 and directly above the heater 704 to deliver the hot air generated by the heater 704 to the inside of the constant temperature chamber 701 to make the temperature inside the chamber uniform. The mounting bracket 703 is fixedly connected to the inside of the constant temperature chamber 701 to install and fix the heater 704. The heater 704 is installed inside the mounting bracket 703 to generate heat and provide a heat source to create a high-temperature environment inside the constant temperature chamber 701.
[0034] A method for testing the tensile and torsional tension of automotive wiring harnesses, comprising: Step 1: Place multiple automotive wiring harnesses between two clamps 407. Then, activate telescopic cylinder 414 to rotate two connecting frames 405 around support frame 404. As the connecting frames 405 move, they will move support rod 413, which in turn will move sliding block 410 around synchronous rod 409 via connecting rod 412. This will cause the two connecting frames 405 to move synchronously. When the connecting frames 405 move, they will move clamps 407 via connecting rod 406, thus fixing one end of the automotive wiring harness with the two clamps 407. Step two, push the clamping arm 506 to the right, so that the middle connecting rod 505 and the clamping arm 506 are separated. Then place the other end of the car wiring harness between the middle connecting rod 505 and the clamping arm 506. At this time, release the force on the clamping arm 506, and the spring 509 releases the tension, so that the middle connecting rod 505 and the clamping arm 506 are reset, and the other end of the car wiring harness is clamped. Step 3: After the two ends of the automotive wiring harness are fixed, the motor 604 drives the bidirectional threaded rod 601 to rotate, thereby driving the two moving blocks 602 to move in opposite directions. This, in turn, drives the moving frame 401 and the moving frame 501 to move via the driving rod 603, thus stretching the automotive wiring harness. When the moving frame 401 moves, the rack 608 meshes with the gear 613, thereby driving the worm 612 to rotate. This, in turn, drives the rotating shaft 610 to rotate via the meshing of the worm wheel 611 and the worm 612, causing the rotating disk 402 to rotate, thus performing a torsion test on the stretched automotive wiring harness. Step four: During testing, heater 704 and fan 702 can be activated to heat the inside of the constant temperature chamber 701, so that the temperature of the constant temperature chamber 701 reaches the temperature when the automotive wiring harness is working, thereby improving the accuracy of the test.
[0035] The working principle of this invention is as follows: When fixing automotive wiring harnesses, multiple automotive wiring harnesses are first placed between the two grippers 407 of the clamping assembly 4. Then, the telescopic cylinder 414 is activated, causing the two connecting frames 405 to rotate around the support frame 404. As the connecting frames 405 move, they synchronously drive the support rod 413 to move. The support rod 413, through the connecting rod 412, pushes the sliding block 410 to slide around the outer periphery of the synchronizing rod 409, thus ensuring that the two connecting frames 405 always move synchronously. As the connecting frames 405 continue to rotate, they drive the grippers through the connecting rod 406. 407 slides inside the limiting block 408, eventually causing the two grippers 407 to clamp one end of the automotive wiring harness. Then, the clamping arm 506 of the locking assembly 5 is pushed, causing the middle connecting rod 505 to separate from the clamping arm 506. The other end of the automotive wiring harness is placed between the two. After the clamping arm 506 is released, the spring 509 releases tension, which drives the main connecting rod 504 to reset through the support block 508 and the fixing rod 507. The main connecting rod 504 drives the middle connecting rod 505 and the clamping arm 506 to move closer to each other and press the other end of the wiring harness, achieving bidirectional stable fixation of the wiring harness, preventing the wiring harness from coming off during testing, and ensuring consistent force.
[0036] When performing simultaneous tensile and torsional tests, the motor 604 of the test assembly 6 is activated via the control console 3. The output of the motor 604 drives the bidirectional threaded rod 601 to rotate inside the worktable 1. The two moving blocks 602 move in opposite directions along the bidirectional threaded rod 601. The moving blocks 602 drive the moving frame 401 and the moving frame 501 to slide on the top of the worktable 1 via the top drive rod 603. The opposite movement of the moving frame 401 and the moving frame 501 performs a tensile test on the fixed wire harness. If simultaneous torsion is required, the telescopic cylinder 609 is activated. 9. Push the lifting plate 607 up, so that the rack 608 meshes with the gears 613 at both ends of the worm 612 inside the moving frame 401. When the moving frame 401 moves, the rack 608 drives the gears 613 to rotate, and the gears 613 drive the worm 612 to rotate. Since the worm 612 meshes with the worm wheel 611 on the outer periphery of the rotating shaft 610, the worm 612 drives the worm wheel 611 and the rotating shaft 610 to rotate. The rotating shaft 610 eventually drives the rotating disk 402 and the clamping plate 403 to rotate, thereby performing a torsion test on the wire harness in the tensile state, reducing the steps of separate testing and improving the reliability of the test.
[0037] When it is necessary to simulate the high-temperature environment of automotive wiring harness operation to improve test accuracy, the heater 704 of the heating component 7 is activated. The heater 704 is inside the constant temperature chamber 701 and generates heat. At the same time, the fan 702 on the top of the constant temperature chamber 701 is activated. The fan 702 is located directly above the heater 704 and can evenly deliver the hot air generated by the heater 704 into the constant temperature chamber 701, so that the temperature inside the constant temperature chamber 701 can quickly reach the temperature of the wiring harness when it is actually working. Throughout the test, the constant temperature chamber 701 maintains a closed environment to ensure stable internal temperature and avoid deviation between the room temperature test results and the actual performance of the wiring harness. This makes the test results more in line with the actual application requirements and further improves the test accuracy.
[0038] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.
Claims
1. A testing device for the tensile and torsion testing of automotive wiring harnesses, comprising a worktable (1), characterized in that, The workbench (1) is fixedly connected to a support side plate (2) on the left side, and a control console (3) is fixedly connected to the top of the support side plate (2). The workbench (1) is provided with a clamping assembly (4) and a locking assembly (5) on the top. The workbench (1) is provided with a testing assembly (6) inside, and a heating assembly (7) on the top. The clamping component (4) is used to stably fix one end of the automotive wiring harness so that it can be driven by the test component (6) for testing; The locking component (5) can stably press the other end of the vehicle wiring harness to prevent it from coming loose during testing; The test component (6) is used to perform a tensile test on the automotive wiring harness fixed on the clamping component (4) and the locking component (5), and can also perform a torsion test at the same time as the tensile test; The heating component (7) is used to simulate the high-temperature environment of automotive wiring harnesses during operation, thereby improving the accuracy of the test.
2. The automotive wiring harness tensile and torsion testing device according to claim 1, characterized in that, The clamping assembly (4) includes multiple movable frames (401), each of which is slidably connected to the top of the workbench (1). Each of the multiple movable frames (401) is rotatably connected to a rotating disk (402) on its right side. A clamping plate (403) is fixedly connected to the right side of the rotating disk (402). Support frames (404) are fixedly connected to both the upper and lower ends of the clamping plate (403). Connecting frames (405) are rotatably connected inside each of the two support frames (404). Connecting rods (406) are rotatably connected to one end of each of the two connecting frames (405). A gripper (407) is rotatably connected to the other end of each of the two connecting rods (406). A telescopic cylinder (414) is installed at the other end of each of the two connecting frames (405). The locking assembly (5) includes multiple movable frames (501), each of which is slidably connected to the top of the workbench (1). Each of the multiple movable frames (501) is fixedly connected to a fixed frame (502) on its top. A rotating ring (503) is rotatably connected to the left side of the fixed frame (502). Two main connecting rods (504) are rotatably connected to the rear end of the rotating ring (503). A middle connecting rod (505) is rotatably connected to the front end of the middle part of the two main connecting rods (504). A clamping arm (506) is rotatably connected to the front end of the bottom of the two main connecting rods (504).
3. The automotive wiring harness tensile and torsion testing device according to claim 2, characterized in that, The test assembly (6) includes a bidirectional threaded rod (601), which is rotatably connected inside the workbench (1). Two moving blocks (602) are threadedly connected to the outer circumference of the bidirectional threaded rod (601). Multiple driving rods (603) are fixedly connected to the top of the two moving blocks (602). The multiple driving rods (603) are respectively fixedly connected to the bottom of multiple moving frames one (401) and the bottom of multiple moving frames two (501). A motor (604) is installed on the right side of the workbench (1). The output end of the motor (604) is fixedly connected to the right side of the bidirectional threaded rod (601). The test assembly (6) also includes multiple lifting plates (607), all of which are slidably connected inside the workbench (1). A rack (608) is fixedly connected to the top of each of the multiple lifting plates (607), and a telescopic cylinder (609) is fixedly connected to the bottom of each of the multiple lifting plates (607). All of the telescopic cylinders (609) are fixedly connected inside the workbench (1). The test assembly (6) also includes multiple rotating shafts (610) and multiple worm gears (612). The multiple rotating shafts (610) are respectively fixedly connected to the left side of the multiple rotating disks (402). Worm gears (611) are fixedly connected to the outer periphery of the multiple rotating shafts (610). The multiple worm gears (612) are respectively rotatably connected inside the multiple movable frames (401). The multiple worm gears (611) and the multiple worm gears (612) mesh with each other. Gears (613) are fixedly connected to both ends of the multiple worm gears (612).
4. The automotive wiring harness tensile and torsion testing device according to claim 3, characterized in that, The heating assembly (7) includes a constant temperature chamber (701), which is fixedly connected to the top of the workbench (1). A fan (702) is installed on the top of the constant temperature chamber (701). A mounting bracket (703) is fixedly connected inside the constant temperature chamber (701). A heater (704) is installed inside the mounting bracket (703). The fan (702) is located directly above the heater (704).
5. The automotive wiring harness tensile and torsion testing device according to claim 4, characterized in that, Two limiting blocks (408) are fixedly connected to the right side of the clamping plate (403), and the two grippers (407) are slidably connected inside the two limiting blocks (408).
6. The automotive wiring harness tensile and torsion testing device according to claim 5, characterized in that, A synchronizing rod (409) is fixedly connected inside the clamping plate (403). A sliding block (410) is slidably connected to the outer periphery of the synchronizing rod (409). Two synchronizing frames (411) are fixedly connected to the outer periphery of the sliding block (410). A connecting rod (412) is rotatably connected to one side of each of the two synchronizing frames (411). A support rod (413) is rotatably connected to the other end of each of the two connecting rods (412). The other ends of the two support rods (413) are fixedly connected to the opposite side of the two connecting frames (405).
7. The automotive wiring harness tensile and torsion testing device according to claim 6, characterized in that, The clamping plate (403) is fixedly connected to a tripod (415) on both the front and rear sides, and both tripods (415) are fixedly connected to the right side of the rotating disk (402).
8. The automotive wiring harness tensile and torsion testing device according to claim 7, characterized in that, The rear end of the clamping arm (506) is fixedly connected to two fixing rods (507), and a support block (508) is fixedly connected to the outer periphery of each of the two fixing rods (507). A spring (509) is fixedly connected to the other end of each of the two support blocks (508), and the other ends of the two springs (509) are respectively fixedly connected inside the two main connecting rods (504).
9. The automotive wiring harness tensile and torsion testing device according to claim 8, characterized in that, The workbench (1) has two fixedly connected limit rods (605) inside, and two moving blocks (602) are slidably connected to the outer periphery of the two limit rods (605). The workbench (1) has multiple sliding rods (606) fixedly connected inside, and multiple driving rods (603) are slidably connected to the outer periphery of the multiple sliding rods (606).
10. A method for testing the tensile and torsion properties of automotive wiring harnesses, using the automotive wiring harness tensile and torsion testing device as described in claim 9, characterized in that... include: Step 1: Place multiple automotive wiring harnesses between two clamps (407). At this time, activate telescopic cylinder 1 (414) to drive the two connecting frames (405) to rotate around support frame 1 (404). When the connecting frames (405) move, they will drive the support rod (413) to move, which will drive the sliding block (410) to move around the circumference of the synchronous rod (409) through connecting rod 2 (412). This will cause the two connecting frames (405) to move synchronously. When the connecting frames (405) move, the clamps (407) will move through connecting rod 1 (406), so that the two clamps (407) fix one end of the automotive wiring harness. Step two, push the clamping arm (506) to the right so that the middle connecting rod (505) and the clamping arm (506) are separated. Then place the other end of the car wiring harness between the middle connecting rod (505) and the clamping arm (506). At this time, release the force on the clamping arm (506), and the spring (509) releases the tension, so that the middle connecting rod (505) and the clamping arm (506) are reset, and the other end of the car wiring harness is clamped. Step 3: After the two ends of the car wiring harness are fixed, the motor (604) drives the bidirectional threaded rod (601) to rotate, thereby driving the two moving blocks (602) to move in opposite directions. This drives the moving frame one (401) and the moving frame two (501) to move through the driving rod (603), thereby stretching the car wiring harness. When the moving frame one (401) moves, the rack (608) meshes with the gear (613), thereby driving the worm (612) to rotate. This drives the rotating shaft (610) to rotate through the meshing of the worm wheel (611) and the worm (612), causing the rotating disk (402) to rotate, thereby performing a torsion test on the stretched car wiring harness. Step four: During testing, the heater (704) and fan (702) can be activated to heat the inside of the constant temperature chamber (701) so that the temperature of the constant temperature chamber (701) reaches the temperature when the automotive wiring harness is working, thereby improving the accuracy of the test.