Tension testing device for automobile wire detection

Abstract

The utility model relates to the technical field of wire tension testing, and discloses a tension testing device for automobile wire detection, which comprises a base, a lifting device is arranged at the top of the base, clamping devices are arranged on the lifting device and the base, each clamping device comprises a fixing plate, a connecting seat is arranged on one side of each of a fixed clamping jaw and a movable clamping jaw, and the connecting seats are connected with the lifting device. A cable sample is clamped through the jaw ends of the fixed clamping jaw and the movable clamping jaw, and secondary clamping is carried out on the cable sample through the cooperation of the convex ring and the winding groove, so that the cable sample can be clamped more stably, and the cable sample can be clamped more stably. The end of the cable sample is clamped through the positioning screw, the clamping area of the cable in the testing process is increased, the clamping effect is improved, the cable is prevented from being separated in the testing process, and it is guaranteed that the tension test is conducted accurately and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of wire tension testing, in particular to a tension testing device for automobile wire detection. Background Art

[0002] The automotive wiring harness is like the "nervous system" inside the car. Without it, the car cannot perform at its maximum efficiency, let alone coordinate and control the normal operation of various systems inside the car. If the wiring harness has its own quality problems, and the connection between the power transmission line and the wiring harness terminal is not tight enough, the wiring harness will break; the second is that the appearance of the wiring harness power transmission line is intact, but the internal copper core has been disconnected from the terminal. Both of these situations will cause functional failures of the car line, so it is necessary to perform a tensile test on the automotive wiring harness.

[0003] After searching, the Chinese utility model patent with publication number: CN206420716U discloses a wire tension testing machine, including a base, a bracket is arranged at the upper end of the base, the bracket is provided with an upper wire clamping mechanism and a driving mechanism for driving the upper wire clamping mechanism to move up and down, a lower wire clamping mechanism is arranged directly below the upper wire clamping mechanism, the upper wire clamping mechanism includes a crossbeam, the driving mechanism includes a screw and a motor for driving the screw to rotate, the screw is transmission-connected to the crossbeam, an upper fixed block is arranged in the middle of the crossbeam, and the upper fixed block is provided with a first wire clamp; the lower wire clamping mechanism includes a lower fixed block, the lower end of the lower fixed block is fixedly connected to the base, and the upper end of the lower fixed block is provided with a second wire clamp. The utility model performs tensile performance testing on wire materials such as wires and cables, is simple to operate, and the measured tension value has a high accuracy.

[0004] In the above technical solution, the wires are fixed by the first wire clamp and the second wire clamp. However, when testing automobile wires, the automobile wiring harness is usually composed of wires of various colors and insulating sleeves. The existing tensile test wire clamps are generally clamps. Therefore, when clamping the automobile wiring harness composed of various wires, the contact area of ​​the clamp is small when clamping the wire harness, and the wires are easily detached from the clamp, thereby reducing the efficiency of the tensile test. Utility Model Content

[0005] The purpose of the utility model is to provide a tension test device for automobile wire detection to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tensile test device for automobile wire detection, comprising a base, a lifting device is provided on the top of the base, a clamping device is provided on the lifting device and the base, the clamping device comprises a fixed plate, a fixed clamping claw is fixed on one side of the fixed plate, a movable clamping claw is movably connected to the side of the fixed plate close to the fixed clamping claw, a connecting seat is provided on one side of the fixed clamping claw and the movable clamping claw, an elastic rubber is provided on one side of the connecting seat, one side of the elastic rubber is provided with a wire clamping recess, and one side of the other elastic rubber is provided with a wire clamping protrusion.

[0007] Furthermore, a winding groove is provided inside one end of the wire clamping recess, a winding column is provided in the center of the winding groove, the winding groove is in the shape of an annular groove with one side open, a positioning screw is provided inside the wire clamping recess on one side of the winding groove, and a convex ring is provided on one side of the wire clamping protrusion, and the convex ring cooperates with the winding groove to fix the wire.

[0008] Furthermore, the lifting device includes a door-type bracket, a screw rod is rotatably provided inside the columns on both sides of the door-type bracket, a screw rod nut is rotatably provided outside the screw rod, a lifting beam is provided between the outer walls of the screw rod and the nut, a tension sensor is provided at the center of the bottom of the lifting beam, and one group of the clamping devices is fixedly connected to the bottom end of the tension sensor.

[0009] Furthermore, a dovetail groove is provided inside the fixed plate at the connection position of the movable clamping jaw, and a dovetail slider is provided on the top of the movable clamping jaw. The movable clamping jaw can slide on the fixed plate through the cooperation of the dovetail groove and the dovetail slider.

[0010] Furthermore, a clamping bolt is provided on one side of the top of the fixed clamping jaw, a through hole is opened inside the movable clamping jaw, one end of the screw rod of the clamping bolt passes through the through hole of the movable clamping jaw, and the nut of the clamping bolt is located outside one end of the through hole of the movable clamping jaw.

[0011] Furthermore, servo motors are provided on both sides of the top cross bar of the door-shaped bracket, and one end of the power output shaft of the servo motor is fixedly connected to the top end of the screw rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model realizes that when the tension test device for automobile wire detection is used, the bottom end of the cable sample is clamped in the clamping device at the bottom by the provided base, lifting device and clamping device. Specifically, the bottom end of the cable sample is wound in the winding groove outside the winding column, and then the positioning screw is tightened to fix one end of the cable sample in the winding groove, and then the nut of the clamping bolt is rotated to make the movable clamping jaw approach one end of the fixed clamping jaw. During the movement of the movable clamping jaw, the convex ring will contact the outer wall of the winding part of the bottom end of the cable sample. As the movable clamping jaw moves closer, the elastic rubber is compressed, and the convex ring presses the cable sample tightly inside the winding groove until the claw end parts of the movable clamping jaw and the fixed clamping jaw are clamped in place with the cable sample. At this time, the bottom end of the cable sample is clamped in place, and the top end of the cable is clamped in the same way, and then the lead screw is driven to rotate by the servo motor, and the rotational motion of the lead screw is converted into linear motion by the lead screw nut to drive the lifting beam to rise, thereby mobilizing the tension sensor and the clamping device located thereon to rise, and the cable sample is subjected to tension testing;

[0014] During the entire test clamping process, the cable sample is clamped by the claw ends of the fixed jaw and the movable jaw, and the cable sample is clamped for a second time through the cooperation of the convex ring and the winding groove. The end of the cable sample is clamped by the positioning screw, which increases the clamping area of ​​the cable during the test, improves the clamping effect, prevents the cable from detaching during the test, and ensures that the tensile test is carried out accurately and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a tension test device for automobile wire detection according to the utility model;

[0016] Figure 2 This is a main cross-sectional view of a tension test device for automobile wire detection according to the utility model;

[0017] Figure 3 This is a three-dimensional diagram of the fixed clamp connection structure of a tension test device for automobile wire detection according to the utility model;

[0018] Figure 4 This is a stereoscopic view from another perspective of the fixed clamping claw connection structure of a tension test device for automobile wire detection according to the utility model.

[0019] In the figure: 1-base; 2-door bracket; 3-servo motor; 4-screw; 5-screw nut; 6-lifting beam; 7-tension sensor; 8-fixed plate; 9-fixed clamping jaw; 10-movable clamping jaw; 11-clamping bolt; 12-connecting seat; 13-elastic rubber; 14-wire clamping recess; 15-winding column; 16-winding groove; 17-positioning screw; 18-wire clamping convex seat; 19-convex ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a tension test device for automobile wire detection, including a base 1, a lifting device is provided on the top of the base 1, and a clamping device is provided on the lifting device and the base 1. The clamping device includes a fixed plate 8, a fixed clamping claw 9 is fixed on one side of the fixed plate 8, and a movable clamping claw 10 is movably connected to the fixed clamping claw 9 on the side of the fixed plate 8, and a connecting seat 12 is provided on one side of the fixed clamping claw 9 and the movable clamping claw 10. An elastic rubber 13 is provided on one side of the connecting seat 12, and a wire clamping recess 14 is provided on one side of one elastic rubber 13, and a wire clamping convex seat 18 is provided on one side of the other elastic rubber 13. The cable sample is clamped by the claw ends of the fixed clamping claw 9 and the movable clamping claw 10, and the cable sample is clamped for the second time by the cooperation of the convex ring 19 and the winding groove 16. The end of the cable sample is clamped by the positioning screw 17, so as to increase the clamping area of ​​the cable during the test, improve the clamping effect, prevent the cable from being separated during the test, and ensure that the tension test is carried out accurately and efficiently.

[0022] A winding groove 16 is provided inside one end of the wire clamping recess 14, a winding column 15 is provided in the center of the winding groove 16, the winding groove 16 is in the shape of an annular groove with one side open, a positioning screw 17 is provided on one side of the winding groove 16 inside the wire clamping recess 14, and a convex ring 19 is provided on one side of the wire clamping protrusion 18, and the convex ring 19 cooperates with the winding groove 16 to fix the wire.

[0023] The lifting device includes a door-type bracket 2, and a screw 4 is rotatably provided inside the columns on both sides of the door-type bracket 2, and a screw nut 5 is rotatably provided outside the screw 4. A lifting beam 6 is provided between the outer walls of the screw nut 5, and a tension sensor 7 is provided at the bottom center of the lifting beam 6, and one set of clamping devices is fixedly connected to the bottom end of the tension sensor 7. Servo motors 3 are provided on both sides of the top crossbar of the door-type bracket 2, and one end of the power output shaft of the servo motor 3 is fixedly connected to the top of the screw 4. The screw 4 is driven to rotate by the servo motor 3, and the rotational motion of the screw 4 is converted into linear motion by the screw nut 5 to drive the lifting beam 6 to rise, thereby mobilizing the tension sensor 7 and the clamping device located thereon to rise, and the cable sample is subjected to a tension test.

[0024] A dovetail groove is provided inside the fixed plate 8 at the connection position of the movable clamping jaw 10, and a dovetail slider is provided on the top of the movable clamping jaw 10. The movable clamping jaw 10 can slide on the fixed plate 8 through the cooperation of the dovetail groove and the dovetail slider.

[0025] A clamping bolt 11 is provided on one side of the top of the fixed clamping jaw 9, and a through hole is opened inside the movable clamping jaw 10. One end of the screw rod of the clamping bolt 11 passes through the through hole of the movable clamping jaw 10, and the nut of the clamping bolt 11 is located on the outside of one end of the through hole of the movable clamping jaw 10. The clamping bolt 11 is used to clamp the fixed clamping jaw 9 and the movable clamping jaw 10 on the wire.

[0026] When the tensile test device for automobile wire detection is used, the bottom end of the cable sample is clamped in the clamping device at the bottom. Specifically, the bottom end of the cable sample is wound in the winding groove 16 outside the winding column 15, and then the positioning screw 17 is tightened to fix one end of the cable sample in the winding groove. Then, the nut of the clamping bolt 11 is rotated to make the movable jaw 10 approach one end of the fixed jaw 9. During the movement of the movable jaw 10, the convex ring 19 will contact the outer wall of the winding part of the bottom end of the cable sample. As the movable jaw 10 moves further, the convex ring 19 will contact the outer wall of the winding part of the bottom end of the cable sample. At this time, the elastic rubber 13 is compressed, and the convex ring 19 presses the cable sample tightly inside the winding groove 16 until the claw ends of the movable clamping jaw 10 and the fixed clamping jaw 9 are clamped in place with the cable sample. At this time, the bottom end of the cable sample is clamped in place, and the top end of the cable is clamped in the same way. Then, the servo motor 3 drives the screw rod 4 to rotate, and the screw nut 5 converts the rotational motion of the screw rod 4 into linear motion to drive the lifting beam 6 to rise, thereby mobilizing the tension sensor 7 and the clamping device located thereon to rise, and the cable sample is subjected to a tension test;

[0027] During the entire test clamping process, the cable sample is clamped by the claw ends of the fixed jaw 9 and the movable jaw 10, and the cable sample is clamped for a second time through the cooperation of the convex ring 19 and the winding groove 16. The end of the cable sample is clamped by the positioning screw 17, which increases the clamping area of ​​the cable during the test, improves the clamping effect, prevents the cable from detaching during the test, and ensures that the tensile test is carried out accurately and efficiently.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A tensile testing device for automobile wire detection, comprising a base (1), characterized in that: A lifting device is provided on the top of the base (1), and a clamping device is provided on both the lifting device and the base (1), and the clamping device comprises a fixed plate (8), a fixed clamping claw (9) is fixed on one side of the fixed plate (8), and a movable clamping claw (10) is movably connected to the side of the fixed clamping claw (9) of the fixed plate (8), and a connecting seat (12) is provided on one side of the fixed clamping claw (9) and the movable clamping claw (10), and an elastic rubber (13) is provided on one side of the connecting seat (12), and a wire clamping recess (14) is provided on one side of the elastic rubber (13), and a wire clamping protrusion (18) is provided on one side of the other elastic rubber (13).

2. A tensile testing device for automobile wire detection according to claim 1, characterized in that: A winding groove (16) is provided inside one end of the wire clamping recess (14), a winding column (15) is provided in the center of the winding groove (16), the winding groove (16) is in the shape of an annular groove with one side open, a positioning screw (17) is provided inside the wire clamping recess (14) on one side of the winding groove (16), a convex ring (19) is provided on one side of the wire clamping protrusion (18), and the convex ring (19) cooperates with the winding groove (16) to fix the wire.

3. A tensile testing device for automobile wire detection according to claim 2, characterized in that: The lifting device comprises a door-shaped bracket (2), wherein screw rods (4) are rotatably provided inside the columns on both sides of the door-shaped bracket (2), screw rod nuts (5) are rotatably provided outside the screw rods (4), a lifting beam (6) is provided between the outer walls of the screw rod nuts (5), a tension sensor (7) is provided at the center of the bottom of the lifting beam (6), and one group of the clamping devices is fixedly connected to the bottom end of the tension sensor (7).

4. A tensile testing device for automobile wire detection according to claim 3, characterized in that: A dovetail groove is provided inside the fixed plate (8) at the connection position of the movable clamping jaw (10), and a dovetail slider is provided on the top of the movable clamping jaw (10). The movable clamping jaw (10) can slide on the fixed plate (8) through the cooperation of the dovetail groove and the dovetail slider.

5. A tensile testing device for automobile wire detection according to claim 4, characterized in that: A clamping bolt (11) is provided on one side of the top of the fixed clamping jaw (9), a through hole is opened inside the movable clamping jaw (10), one end of the screw rod of the clamping bolt (11) passes through the through hole of the movable clamping jaw (10), and the nut of the clamping bolt (11) is located outside one end of the through hole of the movable clamping jaw (10).

6. A tensile testing device for automobile wire detection according to claim 3, characterized in that: A servo motor (3) is provided on both sides of the top crossbar of the door-shaped bracket (2), and one end of the power output shaft of the servo motor (3) is fixedly connected to the top end of the screw rod (4).

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