Electric tension testing machine for detecting strength of wire harness and use method of electric tension testing machine

Abstract

The invention discloses an electric tension testing machine for wire harness strength detection and a use method thereof, and relates to the field of wire harness detection.The electric tension testing machine comprises a testing machine body, a control panel is arranged on the outer wall of the testing machine body, a lifting frame is fixedly installed at the top of the testing machine body, and a lifting groove is formed in the outer wall of the lifting frame; a lifting screw rod is rotatably mounted on the inner wall of the lifting groove, a mounting plate is mounted on the outer wall of the lifting screw rod in a threaded mode, a tension sensor is fixedly mounted at the bottom of the mounting plate, and a clamping mechanism used for fixing a wire harness is arranged on the outer wall of the tension sensor; the top of the testing machine main body is provided with a torsion testing mechanism used for carrying out a vertical torsion test on the wire harness. According to the electric tension testing machine for detecting the strength of the wire harness and the use method of the electric tension testing machine, the tension of the wire harness can be detected, meanwhile, the detection requirements of different types of wire harnesses on vertical torsion resistance can be met, the detection function of the testing machine is greatly expanded, and the application range of the testing machine is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness detection, in particular to an electric tensile testing machine for wire harness strength detection and a method for using the same. Background Art

[0002] In the wire harness production process, wire harness strength is one of the important indicators to measure its quality. Wire harness strength testing is an important test used to evaluate the ability of wire harnesses to resist damage when subjected to external forces, ensuring that they maintain structural integrity and normal functions in various usage scenarios. A testing machine is required to perform strength testing on them.

[0003] In the prior art, the Chinese patent with the announcement number CN217111830U discloses an automobile wiring harness tensile testing machine, including a body, the body is provided with a clamping assembly for clamping the cable of the wiring harness and a chuck for clamping the wiring harness terminal, the body is provided with a driving cylinder, the driving cylinder can drive the clamping assembly to move away from the chuck, the chuck is connected to a tension sensor for measuring the tension of the wiring harness, the chuck is provided with a vertically arranged slot, the wiring terminal can be clamped at the corresponding slot position of the chuck, the chuck is provided with a pressing plate that can slide vertically and rotate relative to the coaxial axis of the chuck, and a limit plate is provided at the position of the pressing plate corresponding to the slot. When the pressing plate moves away from the chuck, the limit plate moves close to the slot, and the limit plate can cover the upper part of the open slot. The side of the wiring terminal away from the chuck can abut against the side of the limit plate close to the chuck, thereby improving the situation in which the wiring terminal is easily slid upward and falls off from the chuck under the action of the vertical upward component force.

[0004] For example, in the prior art, a Chinese patent with announcement number CN209992291U discloses a wire harness electronic tensile testing device, including a frame, a tensile testing mechanism, a wire locking mechanism and a terminal clamping mechanism. The tensile testing mechanism is fixed on the frame, and the testing end of the tensile testing mechanism is fixedly connected to one end of the terminal clamping mechanism. A movable hole is opened on the top of the frame, and a horizontal sliding mechanism is fixed inside the frame. One end of the wire locking mechanism passes through the movable hole and is fixedly connected to the sliding end of the horizontal sliding mechanism. The terminal clamping mechanism includes a first mounting frame, a first eccentric wheel and a second eccentric wheel. The first eccentric wheel is rotatably connected to the first mounting frame, and the second eccentric wheel is rotatably connected to the first mounting frame, and the second eccentric wheel is arranged opposite to the first eccentric wheel. The circumferential surface of the first eccentric wheel and the second eccentric wheel is serrated, which has a good fixing effect on the terminal and the wire, and the fixing method is simple.

[0005] Based on the above materials, it can be seen that the existing technology testing equipment fixes the two ends of the wire harness and then pulls it to achieve the detection of the strength of the wire harness. Since wire harnesses of different specifications and types have differences in structure and material, the wire harness usually needs to be tested for its vertical torsional strength. The existing technology testing equipment is often unable to flexibly detect the characteristics of different wire harnesses, and it is difficult to meet diverse testing needs. The detection function is single, and therefore, further improvement is needed. Summary of the Invention

[0006] The purpose of the present invention is to provide an electric tensile testing machine for wire harness strength testing and a method for using the same, so as to solve the problem raised in the above background technology that due to the differences in structure and material of wire harnesses of different specifications and types, it is usually necessary to test the vertical torsional strength of the wire harnesses. The existing test equipment is often unable to flexibly test the characteristics of different wire harnesses, making it difficult to meet diverse testing needs and having a single testing function.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electric tensile testing machine for detecting the strength of a wire harness, comprising a testing machine body, a control panel being provided on the outer wall of the testing machine body, a lifting frame being fixedly mounted on the top of the testing machine body, a lifting slot being provided on the outer wall of the lifting frame, and a lifting screw being rotatably mounted on the inner wall of the lifting slot, a mounting plate being threadedly mounted on the outer wall of the lifting screw, and a tensile sensor being fixedly mounted on the bottom of the mounting plate, a clamping mechanism being provided on the outer wall of the tensile sensor for fixing the wire harness, the clamping mechanism comprising a clamping seat fixedly mounted on the outer wall of the tensile sensor, and a clamping block being slidably mounted inside the clamping seat, a linkage disk being rotatably mounted inside the clamping seat, and a connecting rod being rotatably mounted on the outer wall of the linkage disk, and a torsion testing mechanism being provided on the top of the testing machine body for performing a vertical torsion test on the wire harness.

[0008] Furthermore, the cross-section of the lifting frame is designed to be inverted U-shaped, the lifting slots are symmetrically arranged on the inner walls of both sides of the lifting frame, the mounting plate is slidingly connected to the inner walls of the lifting slots, and the outer wall of the mounting plate is provided with a through hole for the wiring harness to pass through.

[0009] Furthermore, the length of the lifting screw is greater than the length of the lifting slot, and a driven bevel gear is fixedly installed on the top of the lifting screw, a first drive motor is fixedly installed on the top of the lifting frame, and an active bevel gear is fixedly installed on the output end of the first drive motor, a transmission shaft is rotatably installed inside the lifting frame, and a transmission bevel gear is fixedly installed on the end of the transmission shaft.

[0010] Furthermore, the transmission bevel gears are symmetrically arranged at both ends of the transmission shaft, and the transmission shaft is symmetrically arranged on both sides of the driving bevel gear, and the transmission bevel gears are meshed and connected with both the driving bevel gear and the driven bevel gear.

[0011] Furthermore, the clamping seat is designed to be cylindrical as a whole, and a through hole is provided on the outer wall of the clamping seat, and the aperture of the through hole is larger than the outer diameter of the wiring harness. The cross-section of the clamping block is designed to be rectangular, and the corners of the clamping block at one end inside the through hole are designed to be beveled, and the clamping block is arranged at equal angles inside the clamping seat. A card slot is provided at the end of the clamping block, and the card slots are distributed at equal intervals on the outer wall of the clamping block close to one end of the wiring harness. The outer walls on both sides of the clamping block are fixedly installed with symmetrically arranged limit blocks, and the length of the limit blocks is smaller than the length of the clamping block. An adjustment groove is provided inside the clamping seat, and the inner wall of the adjustment groove fits with the clamping block and the outer wall of the limit block.

[0012] Furthermore, the linkage disk is located at the bottom of the clamping block, and the outer wall of the linkage disk is provided with a through hole identical to the outer wall of the clamping seat, and the diameter of the linkage disk is smaller than the diameter of the clamping seat, the connecting rod is distributed at equal angles on the outer wall of the linkage disk, and the connecting rod is rotatably connected to the bottom of the clamping block at one end away from the linkage disk, and the connecting rod is located between the clamping block and the linkage disk.

[0013] Furthermore, an adjusting screw is rotatably mounted on the outer wall of the clamping seat, and a rotary handle is fixedly mounted on the end of the adjusting screw. An adjusting hole is opened at the end of the clamping block, and the inner wall of the adjusting hole is threadedly connected to the outer wall of the adjusting screw.

[0014] Furthermore, the torsion testing mechanism includes a torsion force sensor rotatably installed inside the testing machine body, and an end gear is fixedly installed at the bottom of the torsion force sensor. A second drive motor is fixedly installed inside the testing machine body, and a drive gear is fixedly installed at the output end of the second drive motor. A clamping mechanism is provided on the top of the torsion force sensor.

[0015] Furthermore, the torsional force sensor is located between the lifting frames, and the torsional force sensor is electrically connected to the control panel. The second drive motor and the torsional force sensor are vertically arranged, and the end gear is meshed with the drive gear.

[0016] Furthermore, a method for using an electric tensile testing machine for detecting the strength of a wire harness comprises the following steps: S1: Use the clamping mechanism to fix the two ends of the wire harness. Insert the two ends of the wire harness through the through-hole, turn the handle at the end of the adjusting screw to drive one set of clamps to slide in the adjustment slot of the clamping seat. The clamp drives the linkage disk to rotate. The linkage disk causes the other clamps to slide synchronously toward the direction of the wire harness through the connecting rod until the groove at the end of the clamp tightly clamps the wire harness. This completes the fixation of one end of the wire harness. Then fix the other end of the wire harness in the same way. S2: Start the first drive motor to drive the two sets of lifting screws to rotate, driving the mounting plate to move along the lifting slot, applying tension to the wiring harness. The tension sensor feeds back the tension data to the control panel in real time, and the wiring harness can be tested for tension. S3: Start the second drive motor, the drive gear engages with the end gear, drives the torsion force sensor to rotate, applies torsional force to the wiring harness, and the torsion force sensor monitors the torque data in real time and feeds back to the control panel, so that the torsion force test of the wiring harness can be performed.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The electric tensile testing machine for detecting the strength of a wiring harness and its use method can detect the vertical torsional strength of the wiring harness through the arrangement of a torsional force sensor, an end gear, a drive gear, and a second drive motor in the torsion testing mechanism, thereby making up for the deficiency of the single detection function of the existing technology. The second drive motor can accurately control the rotation angle and torque of the torsional force sensor through the meshing transmission of the drive gear and the end gear, meeting the detection requirements of the vertical torsional strength of different types of wiring harnesses, greatly expanding the detection function of the testing machine and improving its scope of application.

[0018] 2. Through the cooperation of the linkage disk, connecting rod and clamping block in the clamping mechanism, rotating the adjusting screw can drive one group of clamping blocks to slide, drive the linkage disk to rotate, and drive the remaining clamping blocks to slide along the adjustment slot through the connecting rod, so as to achieve rapid clamping of the wiring harness. The card slot design on the clamping block can effectively increase the friction with the wiring harness, prevent the wiring harness from sliding during the test process, and improve the accuracy of the test results. At the same time, it is suitable for wiring harnesses of different diameters, which improves the versatility of the test machine.

[0019] 3. By setting up a lifting adjustment structure consisting of a lifting frame, a lifting screw, a mounting plate and a tension sensor, the height of the tension sensor can be flexibly adjusted according to the length of the wire harness, meeting the installation requirements of diversified wire harness tension detection. At the same time, the first drive motor drives the lifting screws on both sides to rotate synchronously through the active bevel gear, the transmission bevel gear and the driven bevel gear, ensuring the smoothness of the lifting process of the mounting plate and improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the lifting frame of the present invention; Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 4 This is a schematic diagram of the structure of the clamping seat, clamping block, through hole and rotary handle of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the clamping seat of the present invention; Figure 6 This is a schematic diagram of the structure of the linkage disk, connecting rod, clamping block, limiting block, slot, adjusting screw and rotary handle of the present invention; Figure 7This is a schematic diagram of the structure of the clamping block, connecting rod, limiting block and clamping slot of the present invention; Figure 8 This is a schematic diagram of the cross-sectional structure of the clamping seat and the clamping block of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the testing machine body of the present invention; Figure 10 This is a schematic structural diagram of the clamping base, torsional force sensor, end gear, drive gear and second drive motor of the present invention.

[0021] In the figure: 1. Testing machine body; 101. Control panel; 102. Lifting frame; 103. Lifting slot; 2. Lifting screw; 201. Driven bevel gear; 202. Transmission shaft; 203. Transmission bevel gear; 3. First drive motor; 301. Active bevel gear; 4. Mounting plate; 401. Tension sensor; 5. Clamping seat; 501. Adjustment slot; 502. Linkage disk; 6. Clamping block; 601. Limit block; 602. Connecting rod; 603. Adjustment hole; 604. Slot; 7. Adjustment screw; 701. Rotating handle; 8. Through hole; 9. Torsion force sensor; 901. Face gear; 902. Drive gear; 903. Second drive motor. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 3The present invention provides the following technical solutions: an electric tensile testing machine for detecting the strength of a wire harness, comprising a testing machine body 1, a control panel 101 being provided on the outer wall of the testing machine body 1, a lifting frame 102 being fixedly mounted on the top of the testing machine body 1, and a lifting slot 103 being provided on the outer wall of the lifting frame 102, and a lifting screw 2 being rotatably mounted on the inner wall of the lifting slot 103, a mounting plate 4 being threadedly mounted on the outer wall of the lifting screw 2, and a tension sensor 401 being fixedly mounted on the bottom of the mounting plate 4, the lifting frame 102 having an inverted U-shaped cross section, the lifting slots 103 being symmetrically arranged on the inner walls on both sides of the lifting frame 102, the mounting plate 4 being slidably connected to the inner wall of the lifting slot 103, and the outer wall of the mounting plate 4 being provided with a There is a through hole 8 for the wiring harness to pass through. The length of the lifting screw 2 is greater than the length of the lifting slot 103, and a driven bevel gear 201 is fixedly installed on the top of the lifting screw 2. The first drive motor 3 is fixedly installed on the top of the lifting frame 102, and the output end of the first drive motor 3 is fixedly installed with a driving bevel gear 301. A transmission shaft 202 is rotatably installed inside the lifting frame 102, and a transmission bevel gear 203 is fixedly installed on the end of the transmission shaft 202. The transmission bevel gears 203 are symmetrically arranged at both ends of the transmission shaft 202, and the transmission shaft 202 is symmetrically arranged on both sides of the driving bevel gear 301, and the transmission bevel gear 203 is meshed with the driving bevel gear 301 and the driven bevel gear 201.

[0024] When conducting a wire harness tension test, first, the two ends of the wire harness are fixed by a clamping mechanism, and the first drive motor 3 is started through the control panel 101. The active bevel gear 301 at the output end of the first drive motor 3 begins to rotate, and the active bevel gear 301 engages with the transmission bevel gears 203 at both ends of the transmission shaft 202, driving the transmission shaft 202 to rotate. Since the transmission bevel gear 203 and the driven bevel gear 201 are also engaged with each other, the lifting screws 2 on both sides rotate synchronously, and the mounting plate 4 is threadedly connected to the lifting screw 2 and slides with the inner wall of the lifting groove 103. Therefore, during the rotation of the lifting screw 2, the mounting plate 4 will move up and down smoothly along the lifting groove 103, so that the tension sensor 401 can be adjusted to an appropriate height according to the length of the wire harness. Subsequently, the tension sensor 401 is controlled by the control panel 101 to apply tension, and the tension sensor 401 feeds back the tension data to the control panel 101 for recording and analysis. During the entire tension test process, the lifting adjustment structure ensures that the tension sensor 401 can stably apply tension to the wire harness, thereby improving the accuracy and stability of the test.

[0025] Example 2: Please refer to Figure 1 and Figure 4-Figure 8On the basis of embodiment 1, a clamping mechanism is also disclosed, and its specific structure is as follows: the outer wall of the tension sensor 401 is provided with a clamping mechanism for fixing the wiring harness, the clamping mechanism includes a clamping seat 5 fixedly installed on the outer wall of the tension sensor 401, and a clamping block 6 is slidably installed inside the clamping seat 5, a linkage disk 502 is rotatably installed inside the clamping seat 5, and a connecting rod 602 is rotatably installed on the outer wall of the linkage disk 502, the clamping seat 5 is designed as a whole in a cylindrical shape, and a through hole 8 is opened on the outer wall of the clamping seat 5, and the aperture of the through hole 8 is larger than the outer diameter of the wiring harness, the cross-section of the clamping block 6 is designed to be rectangular, and the corners of one end of the clamping block 6 located inside the through hole 8 are beveled, and the clamping block 6 is arranged at equal angles inside the clamping seat 5, and a card slot 604 is opened at the end of the clamping block 6, and the card slots 604 are evenly spaced on the outer wall of the clamping block 6 close to one end of the wiring harness, and the outer walls of both sides of the clamping block 6 are fixed It is equipped with symmetrically arranged limit blocks 601, and the length of the limit blocks 601 is smaller than the length of the clamping block 6. An adjusting groove 501 is provided inside the clamping seat 5, and the inner wall of the adjusting groove 501 is in contact with the outer wall of the clamping block 6 and the limit block 601. The linkage disk 502 is located at the bottom of the clamping block 6, and the outer wall of the linkage disk 502 is provided with a through hole 8 which is the same as the outer wall of the clamping seat 5, and the diameter of the linkage disk 502 is smaller than the diameter of the clamping seat 5. The connecting rod 602 is distributed at equal angles on the outer wall of the linkage disk 502, and the connecting rod 602 is rotatably connected to the bottom of the clamping block 6 at one end away from the linkage disk 502, and the connecting rod 602 is located between the clamping block 6 and the linkage disk 502. An adjusting screw 7 is rotatably installed on the outer wall of the clamping seat 5, and a rotary handle 701 is fixedly installed on the end of the adjusting screw 7. An adjusting hole 603 is provided at the end of the clamping block 6, and the inner wall of the adjusting hole 603 is threadedly connected to the outer wall of the adjusting screw 7.

[0026] When the wiring harness needs to be fixed, first put the wiring harness into the through hole 8, turn the handle 701 at the end of the adjusting screw 7, and the adjusting screw 7 rotates in the adjusting hole 603 of the clamping block 6. Due to the threaded transmission, the adjusting screw 7 drives one group of clamping blocks 6 to slide in the adjusting groove 501 of the clamping seat 5. The clamping block 6 is connected to the linkage disk 502 through the connecting rod 602. When this group of clamping blocks 6 slides, it will drive the linkage disk 502 to rotate. The connecting rods 602 distributed at equal angles on the outer wall of the linkage disk 502 will synchronously drive the remaining clamping blocks 6 to rotate. Sliding in the adjustment slot 501 realizes the synchronous action of multiple clamps 6. As the clamp 6 slides toward the wiring harness, the slot 604 at the end of the clamp 6 is in close contact with the wiring harness. The slot 604 increases the friction between the clamp 6 and the wiring harness. At the same time, the limit blocks 601 on both sides slide in the adjustment slot 501 to ensure the stability of the sliding of the clamp 6. In this way, wiring harnesses of different diameters can be clamped quickly and firmly, ensuring that the wiring harness will not slide during the tension test and torsion test, thereby improving the accuracy of the test results.

[0027] Example 3: Please refer to Figure 1 、 Figure 9 and Figure 10On the basis of the first embodiment, a torsion testing mechanism is also disclosed, and its specific structure is as follows: a torsion testing mechanism for performing a vertical torsion test on a wiring harness is provided on the top of the testing machine body 1, and the torsion testing mechanism includes a torsion force sensor 9 rotatably mounted inside the testing machine body 1, and an end gear 901 is fixedly mounted on the bottom of the torsion force sensor 9, a second drive motor 903 is fixedly mounted inside the testing machine body 1, and a drive gear 902 is fixedly mounted on the output end of the second drive motor 903, a clamping mechanism is provided on the top of the torsion force sensor 9, the torsion force sensor 9 is located between the lifting frames 102, and the torsion force sensor 9 is electrically connected to the control panel 101, the second drive motor 903 is vertically arranged to the torsion force sensor 9, and the end gear 901 is meshed with the drive gear 902.

[0028] When testing the vertical torsional strength of a wiring harness, one end of the wiring harness is first fixed to the clamping seat 5 at the top of the torsional force sensor 9 via a clamping mechanism, and the other end is fixed to the clamping seat 5 of the tensile testing mechanism. The second drive motor 903 is activated via the control panel 101, and the drive gear 902 at the output end of the second drive motor 903 begins to rotate. The drive gear 902 engages with the end gear 901 at the bottom of the torsional force sensor 9, transmitting power to the torsional force sensor 9. Due to the meshing transmission between the end gear 901 and the drive gear 902, the torsional force sensor 9 begins to rotate, applying a torsional force to the wiring harness. The torsional force sensor 9 can monitor the torque applied during the torsional process in real time and feed the data back to the control panel 101. The control panel 101 can precisely control the speed and rotation angle of the second drive motor 903, thereby precisely controlling the rotation angle and torque of the torsional force sensor 9, thereby meeting the testing requirements for the vertical torsional strength of different types of wiring harnesses and comprehensively evaluating the strength performance of the wiring harness under torsional conditions.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric tensile testing machine for detecting the strength of a wire harness, comprising a testing machine body (1), characterized in that: The outer wall of the testing machine body (1) is provided with a control panel (101), a lifting frame (102) is fixedly installed on the top of the testing machine body (1), and a lifting slot (103) is opened on the outer wall of the lifting frame (102), and a lifting screw (2) is rotatably installed on the inner wall of the lifting slot (103), a mounting plate (4) is threadedly installed on the outer wall of the lifting screw (2), and a tension sensor (401) is fixedly installed on the bottom of the mounting plate (4), and a clamping mechanism for fixing the wire harness is provided on the outer wall of the tension sensor (401), the clamping mechanism includes a clamping seat (5) fixedly installed on the outer wall of the tension sensor (401), and a clamping block (6) is slidably installed inside the clamping seat (5), a linkage disk (502) is rotatably installed inside the clamping seat (5), and a connecting rod (602) is rotatably installed on the outer wall of the linkage disk (502), and a torsion testing mechanism for performing a vertical torsion test on the wire harness is provided on the top of the testing machine body (1).

2. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: The lifting frame (102) has an inverted U-shaped cross-section, the lifting slots (103) are symmetrically arranged on the inner walls of both sides of the lifting frame (102), the mounting plate (4) is slidably connected to the inner walls of the lifting slots (103), and the outer wall of the mounting plate (4) is provided with a through hole (8) for the wiring harness to pass through.

3. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: The length of the lifting screw (2) is greater than the length of the lifting slot (103), and a driven bevel gear (201) is fixedly mounted on the top of the lifting screw (2). A first drive motor (3) is fixedly mounted on the top of the lifting frame (102), and a driving bevel gear (301) is fixedly mounted on the output end of the first drive motor (3). A transmission shaft (202) is rotatably mounted inside the lifting frame (102), and a transmission bevel gear (203) is fixedly mounted on the end of the transmission shaft (202).

4. The electric tensile testing machine for detecting the strength of a wire harness according to claim 3, characterized in that: The transmission bevel gear (203) is symmetrically arranged at both ends of the transmission shaft (202), and the transmission shaft (202) is symmetrically arranged on both sides of the driving bevel gear (301), and the transmission bevel gear (203) is meshedly connected with both the driving bevel gear (301) and the driven bevel gear (201).

5. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: The clamping seat (5) is designed as a whole in a cylindrical shape, and a through hole (8) is provided on the outer wall of the clamping seat (5), and the aperture of the through hole (8) is larger than the outer diameter of the wiring harness. The cross section of the clamping block (6) is designed to be rectangular, and the corner of the clamping block (6) located inside the through hole (8) is designed to be beveled, and the clamping block (6) is arranged at equal angles inside the clamping seat (5). A card slot (604) is provided at the end of the clamping block (6), and the card slots (604) are distributed at equal intervals on the outer wall of the clamping block (6) close to one end of the wiring harness. The outer walls of both sides of the clamping block (6) are fixedly installed with symmetrically arranged limit blocks (601), and the length of the limit blocks (601) is smaller than the length of the clamping block (6). An adjustment slot (501) is provided inside the clamping seat (5), and the inner wall of the adjustment slot (501) is in contact with the outer wall of the clamping block (6) and the limit block (601).

6. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: The linkage disk (502) is located at the bottom of the clamping block (6), and the outer wall of the linkage disk (502) is provided with a through hole (8) identical to the outer wall of the clamping seat (5), and the diameter of the linkage disk (502) is smaller than the diameter of the clamping seat (5), and the connecting rod (602) is distributed at equal angles on the outer wall of the linkage disk (502), and the end of the connecting rod (602) away from the linkage disk (502) is rotatably connected to the bottom of the clamping block (6), and the connecting rod (602) is located between the clamping block (6) and the linkage disk (502).

7. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: An adjusting screw (7) is rotatably mounted on the outer wall of the clamping seat (5), and a rotary handle (701) is fixedly mounted on the end of the adjusting screw (7). An adjusting hole (603) is formed at the end of the clamping block (6), and the inner wall of the adjusting hole (603) is threadedly connected to the outer wall of the adjusting screw (7).

8. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: The torsion testing mechanism comprises a torsion force sensor (9) rotatably mounted inside a testing machine body (1), and an end face gear (901) is fixedly mounted on the bottom of the torsion force sensor (9), a second drive motor (903) is fixedly mounted inside the testing machine body (1), and a drive gear (902) is fixedly mounted on the output end of the second drive motor (903), and a clamping mechanism is provided on the top of the torsion force sensor (9).

9. The electric tensile testing machine for detecting the strength of a wire harness according to claim 8, characterized in that: The torsional force sensor (9) is located between the lifting frames (102), and the torsional force sensor (9) is electrically connected to the control panel (101). The second drive motor (903) and the torsional force sensor (9) are vertically arranged, and the end gear (901) and the drive gear (902) are meshed and connected.

10. The electric tensile testing machine for detecting the strength of a wire harness according to claim 1, characterized in that: The method of using the testing machine is also disclosed. The following steps are involved: S1: Use the clamping mechanism to fix the two ends of the wire harness. The two ends of the wire harness are placed through the through hole (8). The handle (701) at the end of the adjusting screw (7) is rotated to drive one group of clamping blocks (6) to slide in the adjusting groove (501) of the clamping seat (5). The clamping block (6) drives the linkage disk (502) to rotate. The linkage disk (502) causes the remaining clamping blocks (6) to slide synchronously in the direction of the wire harness through the connecting rod (602) until the clamping groove (604) at the end of the clamping block (6) tightly clamps the wire harness. The fixing of one end of the wire harness is completed, and then the other end of the wire harness is fixed in the same way. S2: starting the first drive motor (3), driving the two sets of lifting screws (2) to rotate, driving the mounting plate (4) to move along the lifting slot (103), applying tension to the wiring harness, and the tension sensor (401) feeding back the tension data to the control panel (101) in real time, so as to perform a tension test on the wiring harness; S3: The second drive motor (903) is started, and the drive gear (902) and the end gear (901) are meshed and driven to drive the torsion force sensor (9) to rotate, thereby applying a torsion force to the wiring harness. The torsion force sensor (9) monitors the torque data in real time and feeds it back to the control panel (101), thereby performing a torsion force test on the wiring harness.

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