A tension detection device for cable detection

Abstract

This utility model discloses a tensile testing device for cable testing, including a workbench; it also includes a first fixing plate and a fixing assembly; the first fixing plate is slidably disposed on the upper end of the workbench, two support plates are fixedly connected to the upper edge of the first fixing plate, a first fixing block is fixed between the two support plates, a second fixing block is slidably disposed between the two support plates, and a fixing assembly is disposed inside the workbench. This utility model fixes the cable by passing it through the lower end of the second fixing block and wrapping it around the outer walls of the first and second fixing blocks. Then, by pulling the second fixing block downwards, the cable end passes between the first and second fixing blocks. Finally, by pulling the cable, the first and second fixing blocks are closed, thus fixing the cable. This solves the problem that due to the limited force-bearing area between the cable's outer wall and the clamping jaws, slippage easily occurs due to insufficient friction when the tensile force is too large, which may lead to cable detachment.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment, specifically relating to a tensile testing device for cable testing. Background Technology

[0002] In modern industry, energy, and communications, cables serve as crucial carriers for power transmission and signal transmission, and their safety and reliability directly affect the stable operation of the entire system. Whether it's high-voltage transmission lines, power supply systems for rail transit, or wiring networks in buildings, cables need to withstand complex external forces such as tension, bending, and vibration over long periods of time. Therefore, their mechanical properties, especially tensile strength, have become one of the core indicators for measuring cable quality.

[0003] Existing tensile testing equipment typically fixes both ends of the cable and then stretches it by simultaneously moving the clamping blocks at both ends. This simulates the tensile force that the cable bears under different working conditions and tests parameters such as its maximum bearing capacity, yield strength, and elongation. This can effectively screen out unqualified products and avoid potential safety hazards in advance.

[0004] During the stretching process, the clamping blocks are usually brought together by rotating the threaded rod to fix the cable. However, since the force-bearing area between the cable's outer wall and the clamping jaws is limited, when the tension is too great, the cable with a smooth surface is prone to slippage due to insufficient friction, which may lead to the cable coming off. Utility Model Content

[0005] To overcome the problem that existing tensile testing equipment has limited force-bearing area between the cable outer wall and the clamping jaws during the tensile process, which can easily lead to slippage due to insufficient friction when the tensile force is too large, potentially causing the cable to detach, a new tensile testing device for cable testing is proposed.

[0006] The technical solution of this utility model is as follows: a tensile testing device for cable testing, including a workbench; and also including a first fixed plate and a fixing component; the first fixed plate is slidably disposed on the upper end of the workbench, two support plates are fixedly connected to the upper edge of the first fixed plate, a first fixing block is fixedly connected between the two support plates, a second fixing block is slidably disposed between the two support plates, connecting blocks are fixedly connected to the front and rear ends of the second fixing block, a second groove is opened through the front end of the support plate, a first spring is fixedly connected between the connecting block and the bottom end of the inner wall of the second groove, and a fixing component is disposed inside the workbench.

[0007] Preferably, the first fixing block and the second fixing block are semi-cylindrical, with the second fixing block located at the lower end of the first fixing block, and a limiting groove is formed on the outer wall of the second fixing block.

[0008] Preferably, a first groove is provided at the upper end of the worktable, and a bidirectional screw is rotatably provided on the inner wall of the first groove. Two sliders are threadedly installed on the outer wall of the bidirectional screw, and the two sliders are arranged symmetrically.

[0009] Preferably, a self-locking motor is fixedly connected to the right end of the worktable, and the bidirectional screw is fixedly connected to the output end of the self-locking motor. The self-locking motor is used to drive the bidirectional screw to rotate, and the first fixed plate is fixedly connected to the upper end of the slider.

[0010] Preferably, the upper part of the worktable is provided with scale lines, the first fixed plate is slidably set on the upper part of the scale lines, and two rotating blocks are fixedly connected to the upper edge of the worktable, with protective covers rotatably set on the outer side of the two rotating blocks.

[0011] Preferably, the fixing component includes a second fixing plate, the lower end of the protective cover is fixedly connected to the second fixing plate, the upper end of the worktable is provided with a third groove, the third groove is adapted to the second fixing plate, and the front end of the worktable is provided with a fourth groove.

[0012] Preferably, a damper is fixed to the bottom of the inner wall of the fourth tank, and a limit plate is fixed to the other end of the damper. A second spring is fixed between the rear end of the limit plate and the bottom of the inner wall of the fourth tank. The limit plate is L-shaped, and the inner wall surface of the limit plate is in contact with the upper surface of the second fixed plate.

[0013] The beneficial effects of this utility model are as follows: By passing the cable through the lower end of the second fixing block and wrapping it around the outer walls of the first and second fixing blocks, and then pulling the second fixing block downward to pass the end of the cable through the space between the first and second fixing blocks, and then pulling the cable to retract it to close the first and second fixing blocks, the cable is fixed. This solves the problem that due to the limited force-bearing area between the outer wall of the cable and the clamping jaws, when the pulling force is too large, slippage is likely to occur due to insufficient friction, which may cause the cable to detach. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0015] Figure 2 The diagram shown is a three-dimensional structural schematic of the first fixing plate of this utility model;

[0016] Figure 3 The diagram shown is a three-dimensional structural schematic of the slider of this utility model;

[0017] Figure 4 The diagram shown is a cross-sectional three-dimensional structural schematic of the limiting plate of this utility model;

[0018] Figure 5 The diagram shown is a three-dimensional structural schematic of the second fixing plate of this utility model.

[0019] The markings in the attached diagram are as follows: 1. Workbench; 101. First fixing plate; 102. Support plate; 103. First fixing block; 104. Second fixing block; 105. Connecting block; 106. Second groove; 107. First spring; 2. Limiting groove; 201. Second fixing plate; 202. Third groove; 203. Fourth groove; 204. Damper; 205. Limiting plate; 206. Second spring; 3. First groove; 4. Bidirectional screw; 5. Slider; 6. Self-locking motor; 7. Scale line; 8. Rotating block; 9. Protective cover. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-5 This utility model provides an embodiment of a cable tensile testing device, including a workbench 1; it also includes a first fixing plate 101 and a fixing assembly; the first fixing plate 101 is slidably disposed on the upper end of the workbench 1, two support plates 102 are fixedly connected to the upper edge of the first fixing plate 101, a first fixing block 103 is fixedly connected between the two support plates 102, a second fixing block 104 is slidably disposed between the two support plates 102, connecting blocks 105 are fixedly connected to the front and rear ends of the second fixing block 104, a second groove 106 is opened through the front end of the support plate 102, and the connecting block 105 is fixedly connected to the bottom end of the inner wall of the second groove 106. The first spring 107 and the worktable 1 are equipped with a fixing component. By passing the cable through the lower end of the second fixing block 104 and wrapping it around the outer wall of the first fixing block 103 and the second fixing block 104, and then pulling the second fixing block 104 downward, the end of the cable passes between the first fixing block 103 and the second fixing block 104. Then, by pulling the cable to retract it, the first fixing block 103 and the second fixing block 104 are closed, thereby fixing the cable. This solves the problem that due to the limited force-bearing area between the outer wall of the cable and the clamping jaws, when the pulling force is too large, slippage is likely to occur due to insufficient friction, which may cause the cable to detach.

[0022] Please see Figures 1-3In this embodiment, the first fixing block 103 and the second fixing block 104 are semi-cylindrical. The second fixing block 104 is located at the lower end of the first fixing block 103. A limit groove 2 is formed on the outer wall of the second fixing block 104. A first groove 3 is formed on the upper end of the worktable 1. A bidirectional screw 4 is rotatably arranged on the inner wall of the first groove 3. Two sliders 5 are threadedly installed on the outer wall of the bidirectional screw 4. The two sliders 5 are symmetrically arranged. A self-locking motor 6 is fixedly connected to the right end of the worktable 1. The bidirectional screw 4 is fixedly connected to the output end of the self-locking motor 6. The self-locking motor 6 is used to drive the bidirectional screw 4 to rotate. The first fixing plate 101 is fixedly connected to the upper end of the sliders 5. The workbench 1 has a scale line 7 on its upper end. The first fixed plate 101 is slidably mounted on the upper end of the scale line 7. Two rotating blocks 8 are fixedly connected to the upper edge of the workbench 1. A protective cover 9 is rotatably mounted on the outside of the two rotating blocks 8. By starting the self-locking motor 6, the bidirectional screw 4 is driven to rotate. The two sliders 5 will move synchronously in opposite directions, thereby driving the two first fixed plates 101 to move away from each other and apply tension to the cable. The operator can accurately control the moving distance of the first fixed plate 101 through the scale line 7 on the workbench 1 to ensure the accuracy of the tension detection. The cable detection area is covered and protected by rotating the protective cover 9.

[0023] Please see Figure 4 and Figure 5 In this embodiment, the fixing component includes a second fixing plate 201. The lower end of the protective cover 9 is fixedly connected to the second fixing plate 201. The upper end of the workbench 1 has a third groove 202, which is adapted to the second fixing plate 201. The front end of the workbench 1 has a fourth groove 203. The bottom end of the inner wall of the fourth groove 203 is fixedly connected to a damper 204. The other end of the damper 204 is fixedly connected to a limit plate 205. The rear end of the limit plate 205 is fixedly connected to the bottom end of the inner wall of the fourth groove 203, and a second spring 206 is fixedly connected between the rear end of the limit plate 205 and the bottom end of the inner wall of the fourth groove 203. The 05 is L-shaped, with the inner wall of the limiting plate 205 fitting against the upper surface of the second fixing plate 201. By pulling the limiting plate 205, the limiting plate 205 is moved outward, allowing the second fixing plate 201 to be inserted into the third groove 202. Then, the limiting plate 205 is released so that its inner wall fits against the upper surface of the second fixing plate 201, firmly locking the protective cover 9 onto the workbench 1 to prevent cable breakage and splashing during the testing process, which could cause a safety accident. The damper 204 slows down the movement speed of the limiting plate 205, making the locking process smooth and reliable.

[0024] In use, the cable is first passed through the lower end of the second fixing block 104 and wrapped around the outer wall of the first fixing block 103 and the second fixing block 104. Then, the cable end is passed between the first fixing block 103 and the second fixing block 104 by pulling the second fixing block 104 downward. Then, the cable is pulled to retract and close the first fixing block 103 and the second fixing block 104, thereby fixing the cable and preventing the cable from falling off during the stretching process.

[0025] Then, by starting the self-locking motor 6, the bidirectional screw 4 is driven to rotate, and the two sliders 5 will move synchronously in opposite directions, thereby driving the two first fixing plates 101 to move away from each other and applying tension to the cable. The operator can precisely control the moving distance of the first fixing plate 101 through the scale line 7 on the workbench 1 to ensure the accuracy of the tension detection.

[0026] During the testing process, the protective cover 9 is rotated to cover the cable testing area. At this time, the limiting plate 205 is pulled to move the limiting plate 205 outward, so that the second fixing plate 201 is inserted into the third groove 202. Then the limiting plate 205 is released so that its inner wall surface is attached to the upper end surface of the second fixing plate 201, and the protective cover 9 is firmly locked on the workbench 1 to prevent the cable from breaking and splashing during the testing process, which could cause a safety accident. The damper 204 slows down the movement speed of the limiting plate 205, so that the locking process is smooth and reliable.

[0027] Through the above steps, by passing the cable through the lower end of the second fixing block 104 and wrapping it around the outer walls of the first fixing block 103 and the second fixing block 104, and then pulling the second fixing block 104 downward to pass the end of the cable through the first fixing block 103 and the second fixing block 104, and then pulling the cable to retract it to close the first fixing block 103 and the second fixing block 104, the cable is fixed. This solves the problem that due to the limited force-bearing area between the outer wall of the cable and the clamping jaws, when the pulling force is too large, slippage is likely to occur due to insufficient friction, which may cause the cable to detach.

Claims

1. A tension detection device for cable detection, comprising a workbench (1); characterized in that: It also includes a first fixed plate (101) and a fixing component; the first fixed plate (101) is slidably disposed on the upper end of the worktable (1), two support plates (102) are fixedly connected to the upper edge of the first fixed plate (101), a first fixing block (103) is fixedly connected between the two support plates (102), a second fixing block (104) is slidably disposed between the two support plates (102), a connecting block (105) is fixedly connected to the front and rear ends of the second fixing block (104), a second groove (106) is opened through the front end of the support plate (102), a first spring (107) is fixedly connected between the connecting block (105) and the bottom end of the inner wall of the second groove (106), and a fixing component is disposed inside the worktable (1).

2. A tension detection device for cable detection according to claim 1, characterized in that: The first fixing block (103) and the second fixing block (104) are semi-cylindrical. The second fixing block (104) is located at the lower end of the first fixing block (103). A limiting groove (2) is opened on the outer wall of the second fixing block (104).

3. A tension detection device for cable detection according to claim 1, characterized in that: The upper end of the workbench (1) is provided with a first groove (3), and a bidirectional screw (4) is rotatably provided on the inner wall of the first groove (3). Two sliders (5) are threaded on the outer wall of the bidirectional screw (4), and the two sliders (5) are symmetrically arranged.

4. A tension detection device for cable detection according to claim 3, characterized in that: A self-locking motor (6) is fixedly connected to the right end of the workbench (1). The bidirectional screw (4) is fixedly connected to the output end of the self-locking motor (6). The self-locking motor (6) is used to drive the bidirectional screw (4) to rotate. The first fixed plate (101) is fixedly connected to the upper end of the slider (5).

5. The tension detection device for cable detection according to claim 1, characterized in that: The workbench (1) has a scale line (7) on its upper end. The first fixed plate (101) is slidably set on the upper end of the scale line (7). Two rotating blocks (8) are fixedly connected to the upper edge of the workbench (1). Protective covers (9) are rotatably set on the outside of the two rotating blocks (8).

6. A tension detection device for cable detection according to claim 5, characterized in that: The fixing components include a second fixing plate (201), the lower end of the protective cover (9) is fixed to the second fixing plate (201), the upper end of the workbench (1) is provided with a third groove (202), the third groove (202) is adapted to the second fixing plate (201), and the front end of the workbench (1) is provided with a fourth groove (203).

7. A tension detection device for cable detection according to claim 6, characterized in that: A damper (204) is fixed to the bottom of the inner wall of the fourth tank (203). A limit plate (205) is fixed to the other end of the damper (204). A second spring (206) is fixed between the rear end of the limit plate (205) and the bottom of the inner wall of the fourth tank (203). The limit plate (205) is L-shaped, and the inner wall surface of the limit plate (205) is in contact with the upper surface of the second fixing plate (201).

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