Cable bending fatigue test structure

Abstract

The utility model relates to the technical field of cable testing, in particular to a cable bending fatigue testing structure. A cable bending fatigue test structure comprises a rack; the first supporting block and the second supporting block are arranged on the rack in a spaced mode, the first supporting block and the second supporting block are arranged in a mirror symmetry mode, and the opposite sides of the first supporting block and the second supporting block are each provided with an arc-shaped face; and one side of the change gear is rotationally connected to the rack through a rotating shaft. The beneficial effects of the utility model are that the change gear is sleeved with the test cable, one end of the test cable is bent along the arc-shaped surface, the bending test in the other direction is completed through the steering part, and the cable is pulled by combining the winding of the winding part on the cable, so that all sections of the cable can be subjected to comprehensive bending test; the bending fatigue test of the whole section of cable is realized, so that the actual fatigue condition of the cable in the use process is reflected more truly.

Description

Technical Field

[0001] This utility model relates to the field of cable testing technology, specifically a cable bending fatigue testing structure. Background Technology

[0002] With the increasing demand for cables in modern communications, power and other industries, cables inevitably experience repeated bending during long-term use. This repeated bending may damage the internal structure and external insulation layer of the cable, thereby causing a decrease in the conductivity of the conductor.

[0003] Therefore, bending fatigue testing has become an important means of evaluating cable durability in order to ensure cable quality and reliability. However, existing bending fatigue testing equipment can usually only perform bending tests on a section of the cable, making it difficult to simulate the bending of the entire cable segment during actual use. This results in incomplete test results that cannot fully reflect the actual usage condition of the cable. In addition, existing equipment requires manual cable winding after testing, which is cumbersome and time-consuming, affecting testing efficiency. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a cable bending fatigue testing structure. This solves the problem that existing bending fatigue testing equipment can usually only perform bending tests on a certain section of the cable, making it difficult to simulate the bending of the entire cable section during actual use. As a result, the test results are one-sided and cannot fully reflect the actual usage condition of the cable.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A cable bending fatigue test structure, comprising:

[0006] frame;

[0007] The first support block and the second support block are spaced apart on the frame. The first support block and the second support block are arranged in a mirror symmetrical manner, and each of the first support block and the second support block has an arc-shaped surface on its opposite side.

[0008] A pulley, one side of which is rotatably connected to the frame via a pivot, wherein the pulley is located below the first support block and the second support block;

[0009] A steering unit, which is used to drive the cable to swing from the arc-shaped surface of the first support block to the arc-shaped surface of the second support block;

[0010] A winding section is provided on the swing end of the turning section for winding cables.

[0011] The beneficial effects of this utility model are:

[0012] 1) By placing the test cable on the pulley, one end of the test cable is bent along the arc surface and the bending test in the other direction is completed through the turning part. Then, the cable is pulled by the winding part, ensuring that each section of the cable can be fully tested for bending fatigue. This realizes the bending fatigue test of the entire cable, thus more realistically reflecting the actual fatigue condition of the cable during use. At the same time, the automatic winding of the cable by the winding part not only simplifies the cable storage process, but also greatly improves the testing efficiency, avoids the tediousness of manual operation, and improves the automation and accuracy of the test. This effectively improves the comprehensiveness and efficiency of cable bending fatigue testing, and ensures the scientificity and reliability of the test results.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, the steering unit includes a support plate, a first forward and reverse motor, and a cross arm. The support plate is fixed on the frame, and the first forward and reverse motor is fixed on the support plate.

[0015] Furthermore, one side of the cross arm is fixed to the output shaft of the first forward and reverse motor.

[0016] Furthermore, the winding section includes a second forward and reverse motor and a winding wheel. The second forward and reverse motor is fixed on the other side of the cross arm, and one side of the winding wheel is coaxially fixed on the output shaft of the second forward and reverse motor.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the test cable is put on the pulley, so that one end of the cable is bent along the arc surface of the first support block, and then the cable is wound around the outside of the take-up wheel along the path of the horizontal arm. At this time, the output shaft of the first forward and reverse motor rotates in the forward direction, driving the horizontal arm to rotate in the clockwise direction. As the horizontal arm rotates, the cable wound on it swings and adheres to the arc surface of the second support block, thereby completing the bending of the cable in another direction.

[0018] As the first reversible motor continues to reverse, the horizontal arm rotates counterclockwise and returns to the side of the first support block, causing the cable to bend again in the first direction, thus realizing the switching of the cable bending in two directions. In order to perform bending tests on other sections of the cable, simply start the second reversible motor to drive the winding wheel to rotate. The rotating winding wheel will automatically wind and collect the cable, completing the winding and coiling process of the cable.

[0019] Furthermore, the distance between the first support block and the second support block is greater than the radial dimension of the cable.

[0020] The advantage of adopting the above-mentioned further solution is that by reserving a gap between the brackets that is larger than the radial dimension of the cable, it can be ensured that the cable passes smoothly between the first and second brackets during the test and fully fits the curved surface of the brackets for bending test. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a side view of the cable of this utility model being bent on the arc-shaped surface of the first support block;

[0023] Figure 3 This is a side view of the cable of this utility model being bent on the arc surface of the second support block.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 10. Frame; 20. First support block; 30. Second support block; 40. Roller; 50. Steering unit; 510. Bearing plate; 520. First forward / reverse motor; 530. Cross arm; 60. Winding unit; 610. Second forward / reverse motor; 620. Winding reel. Detailed Implementation

[0026] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0027] With the increasing demand for cables in modern communications, power and other industries, cables inevitably experience repeated bending during long-term use. This repeated bending may damage the internal structure and external insulation layer of the cable, thereby causing a decrease in the conductivity of the conductor.

[0028] Therefore, to ensure the quality and reliability of cables, bending fatigue testing has become an important means of evaluating cable durability. However, existing bending fatigue testing equipment can usually only perform bending tests on a single section of the cable, making it difficult to simulate the bending conditions of the entire cable segment during actual use. This results in incomplete test results that cannot fully reflect the actual usage condition of the cable. In addition, existing equipment requires manual cable winding after testing, a cumbersome and time-consuming process that affects testing efficiency. To address these issues, the inventor has proposed a cable bending fatigue testing structure.

[0029] The present invention provides the following preferred embodiments.

[0030] like Figure 1 , Figure 2 and Figure 3As shown, a cable bending fatigue test structure includes:

[0031] Rack 10;

[0032] The first support block 20 and the second support block 30 are spaced apart on the frame 10. The first support block 20 and the second support block 30 are arranged in a mirror symmetrical manner, and each of the first support block 20 and the second support block 30 has an arc-shaped surface on its opposite side.

[0033] A pulley 40 is provided, one side of which is rotatably connected to the frame 10 via a pivot shaft. The pulley 40 is located below the first support block 20 and the second support block 30.

[0034] A steering part 50 is used to drive the cable to swing from the arc surface of the first support block 20 to the arc surface of the second support block 30.

[0035] A winding section 60 is provided on the swing end of the turning section 50 for winding cables;

[0036] By placing the test cable on the pulley 40, one end of the test cable is bent along the arc surface and then bent in another direction through the turning part 50. Combined with the winding part 60 winding the cable, the cable is pulled, ensuring that each segment of the cable can be subjected to comprehensive bending tests. This achieves bending fatigue testing of the entire cable segment, thus more realistically reflecting the actual fatigue condition of the cable during use. At the same time, the automatic winding of the cable by the winding part 60 not only simplifies the cable storage process but also greatly improves testing efficiency, avoids the tediousness of manual operation, and enhances the automation and accuracy of the test. This effectively improves the comprehensiveness and efficiency of cable bending fatigue testing, ensuring the scientific validity and reliability of the test results.

[0037] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the steering unit 50 includes a support plate 510, a first forward / reverse motor 520, and a cross arm 530. The support plate 510 is fixed on the frame 10, the first forward / reverse motor 520 is fixed on the support plate 510, and one side of the cross arm 530 is fixed on the output shaft of the first forward / reverse motor 520. The winding unit 60 includes a second forward / reverse motor 610 and a winding wheel 620. The second forward / reverse motor 610 is fixed on the other side of the cross arm 530, and one side of the winding wheel 620 is coaxially fixed on the output shaft of the second forward / reverse motor 610.

[0038] The test cable is hung on the pulley 40, and one end of the cable is bent along the arc surface of the first support block 20. Then the cable is wound around the outside of the take-up wheel 620 along the path of the horizontal arm 530. At this time, the output shaft of the first forward and reverse motor 520 rotates in the forward direction, driving the horizontal arm 530 to rotate in the clockwise direction. As the horizontal arm 530 rotates, the cable wound on it swings and adheres to the arc surface of the second support block 30, thus completing the bending of the cable in another direction.

[0039] As the first reversible motor 520 continues to reverse, the horizontal arm 530 rotates back to the side of the first support block 20, and the cable returns to the first direction to bend, thereby realizing the switching of the cable bending in two directions. In order to perform bending tests on other sections of the cable, simply start the second reversible motor 610 to drive the winding wheel 620 to rotate. The rotating winding wheel 620 will automatically wind and collect the cable, completing the winding and coiling process of the cable.

[0040] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the distance between the first support block 20 and the second support block 30 is greater than the radial dimension of the cable. By reserving a distance between the support blocks that is greater than the radial dimension of the cable, it can be ensured that the cable passes smoothly between the first support block 20 and the second support block 30 during the test and fully fits the arc surface of the support block for bending test.

[0041] The specific working process of this utility model is as follows:

[0042] (1) Perform a bending test on a section of the cable.

[0043] First, the test cable is placed on the pulley 40, and one end of the cable is bent along the arc surface of the first support block 20. Then, the cable is wound around the outside of the take-up wheel 620 along the path of the horizontal arm 530. At this time, the output shaft of the first forward and reverse motor 520 rotates in the forward direction, driving the horizontal arm 530 to rotate in the clockwise direction. As the horizontal arm 530 rotates, the cable wound on it swings and adheres to the arc surface of the second support block 30, thus completing the bending of the cable in another direction. As the first forward and reverse motor 520 continues to reverse, the horizontal arm 530 rotates counterclockwise and returns to the side of the first support block 20, so that the cable returns to the first direction for bending, thereby realizing the switching of the cable bending in two directions.

[0044] (2) Perform bending tests on other sections of the cable.

[0045] Start the second forward and reverse motor 610 to drive the take-up wheel 620 to rotate. The rotating take-up wheel 620 will automatically wind the cable that has been bent in the arc-shaped area. The cable to be tested on the hanging wheel 40 will also rotate under the traction, and continue to output a new section of cable to be tested along the arc-shaped surface of the first support block 20 or the second support block 30.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable bend fatigue test structure, characterized by, The utility model relates to a cable winding device, which comprises: a rack; a first supporting block and a second supporting block, which are arranged symmetrically on the rack with a space between them, wherein the first supporting block and the second supporting block are both provided with an arc surface on the side opposite to each other; a hanging wheel, which is rotatably connected to the rack on one side through a rotating shaft, wherein the hanging wheel is located below the first supporting block and the second supporting block; a turning part, which is used to swing the cable from the arc surface of the first supporting block to the arc surface of the second supporting block; a winding part, which is arranged on the swinging end of the turning part to wind the cable.

2. The cable bend fatigue test structure of claim 1, wherein, The turning part comprises a bearing plate, a first forward-reverse motor and a cross arm, wherein the bearing plate is fixed on the rack, and the first forward-reverse motor is fixed on the bearing plate.

3. The cable bend fatigue test structure of claim 2, wherein, One side of the cross arm is fixed on the output shaft of the first forward-reverse motor.

4. The cable bend fatigue test structure of claim 3, wherein, The winding part comprises a second forward-reverse motor and a winding wheel, wherein the second forward-reverse motor is fixed on the other side of the cross arm, and one side of the winding wheel is coaxially fixed on the output shaft of the second forward-reverse motor.

5. The cable bend fatigue test structure of claim 4, wherein, The distance between the first supporting block and the second supporting block is greater than the radial dimension of the cable.

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