Cable strength testing device

Abstract

The utility model discloses a cable strength testing device, which relates to a cable strength detection device and comprises a base, a frame is fixedly mounted at the top of the base, a lifting mechanism is fixedly mounted on one side of the frame, and a clamping mechanism is fixedly mounted on one side, positioned in the frame, of the lifting mechanism. By the adoption of the structure, the pressure applying mechanism and the lifting mechanism start to work cooperatively, the first motor is started to drive the first lead screw in the vertical rail to operate, the sliding block is promoted to slide, the clamping mechanism moves upwards to pull the cable, the middle rack is pulled to move upwards, the gear is driven to rotate, and then the third lead screw in the top rail is driven to rotate, so that the sliding block slides; the conical stamping block is driven to extrude the cable, impact of a sharp object is simulated, pressure is detected by the pressure sensor, if the shape of the stamping block needs to be replaced, the hand-screwing type screw rod needs to be loosened, and the sliding plate in the mounting rail is pulled out, the detection adaptability of the device is effectively improved, and various impact scenes are simulated.

Description

Technical Field

[0001] This utility model relates to cable strength testing devices, and more particularly to a cable strength testing device. Background Technology

[0002] Cable strength testing is mainly used to evaluate whether the mechanical properties of cables meet the requirements for use. Its purpose is to ensure that cables can withstand the corresponding external forces without being damaged in actual application scenarios, such as underground laying, overhead installation, or internal connection of equipment.

[0003] Chinese Patent No. CN219201141U discloses a tensile strength testing device for mining cables. The device includes a positioning assembly comprising a base plate. Two columns are rotatably connected to one side of the upper surface of the base plate. Each column has a lower clamping block and an upper clamping block at its upper end, connected by bolts. A driving assembly is located on the other side of the upper surface of the base plate. The driving assembly includes a housing and a cover. The cover is bolted to the upper edge of the housing. A force measuring assembly is located on the upper side of the cover. This invention enables tensile strength testing of cable sheaths, allowing for tensile testing of multiple marked points on the cable sheath, improving testing accuracy. The device can be operated independently by one person, making it more convenient and efficient.

[0004] While the aforementioned device offers some convenience in practical application, it still reveals significant shortcomings during operation. On one hand, its functionality is limited, only capable of conducting tensile tests. In real-world scenarios, cables may be subjected to impacts from sharp objects, but the device lacks a test function for such impacts, failing to fully simulate the complex working conditions faced by cables in reality. On the other hand, the testing process relies on manual operation, resulting in a time-consuming, labor-intensive, and inefficient process. Overall, the device presents numerous inconveniences in use and fails to meet actual needs, necessitating urgent design improvements to address its deficiencies and enhance testing efficiency. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a cable strength testing device to solve the problems of inconvenient and rapid testing during the application of existing technologies, and the lack of simulated testing by sharp objects.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A cable strength testing device includes a base, a frame fixedly installed on the top of the base, a lifting mechanism fixedly installed on one side of the frame, a clamping mechanism fixedly installed on the side of the lifting mechanism located inside the frame, a pressure applying mechanism fixedly installed at the lower end of the inside of the frame, the pressure applying mechanism and the lifting mechanism being connected in a transmission manner, a pressure sensor fixedly installed in the middle of the top of the base, and a hanging ring fixedly installed on the top of the pressure sensor.

[0008] The lifting mechanism includes a vertical rail, which is fixedly installed on one side of the inside of the frame. A first lead screw is rotatably connected inside the vertical rail. A slider is threadedly connected to the outer surface of the first lead screw. The slider is slidably connected inside the vertical rail. The inner side of the slider is connected to a clamping mechanism. A first motor is connected to the top of the vertical rail. The output end of the first motor passes through the top of the vertical rail and is fixedly connected to the top of the first lead screw.

[0009] As a preferred technical solution, the clamping mechanism includes a mounting base, which is fixedly installed on the inner side of the slider. A second motor is fixedly connected to the inner side of the mounting base, and a horizontal rail is fixedly installed on the outer side of the second motor. A third motor is fixedly connected to one end of the horizontal rail, and a second lead screw is fixedly connected to the output end of the third motor through the horizontal rail. The two ends of the second lead screw have opposite thread directions, and both ends of the second lead screw are threadedly connected to movable blocks. A clamping plate is fixedly connected to the outer side of the movable blocks.

[0010] As a preferred technical solution, the inner side of the clamping plate is provided with anti-slip grooves at equal intervals, the overall cross-sectional shape of the internal cavity of the horizontal rail and the vertical rail is set to a convex shape, and the shape of the slider and the movable block is also set to a convex shape.

[0011] As a preferred technical solution, a support frame is fixedly installed on the outer side of the horizontal rail, a support groove is opened on the outer side of the vertical rail, a support block is slidably connected to the inner side of the support groove, and the outer side of the support block is connected to the support frame.

[0012] As a preferred technical solution, mounting holes are provided at the four corners of the top of the base, and the mounting holes are countersunk holes.

[0013] As a preferred technical solution, the pressure applying mechanism includes a rack, a fixed plate, and a base plate. The rack is fixedly installed at the front end of the support frame, and the fixed plate is fixedly installed at the top front end of the base. A gear is rotatably connected to the upper end of the fixed plate, and the gear meshes with the rack. The base plate is fixedly installed on one side of the top of the base, and a top rail is fixedly installed on the top of the base. A sliding block is slidably connected inside the top rail, and the sliding block is equipped with a pressure applying component. A third lead screw is rotatably connected to the inner side of the top rail. The third lead screw is rotatably connected inside the top rail, and the third lead screw is threadedly connected to the sliding block. The rear end of the third lead screw is connected to the front end of the gear.

[0014] As a preferred technical solution, the pressure application component includes a side plate, which is fixedly installed on the outside of the sliding block. An installation rail is fixedly connected to the outside of the side plate, and a sliding plate is slidably connected to the inside of the installation rail. A stamping block is fixedly connected to the side of the sliding plate near the hanging ring. The cross-sectional shape of the stamping block is an isosceles triangle. A hand-tightening screw is threaded to the outer end of the installation rail, and the end of the hand-tightening screw passes through the installation rail and is threadedly connected to the side plate.

[0015] In summary, the present invention has the following main advantages:

[0016] First, during use, the bottom of the cable is hung on the hanging ring of the bottom pressure sensor, and the upper end is placed inside the two clamping plates. Then, the second motor is started. The motor drives the second lead screw to rotate in the horizontal rail. Because the threads at both ends of the lead screw are reversed, the movable block is driven to move, causing the clamping plates to reciprocate and clamp the cable. During this process, the anti-slip grooves play an anti-slip role. Moreover, starting the second motor again can make the horizontal rail rotate, which drives the clamping plates to rotate. The cable is then wound up on the outer surface of the clamping plates. Such stable clamping and positioning ensures the accuracy of the detection.

[0017] Secondly, during use, after the cable clamping is completed, the pressure mechanism and lifting mechanism of this device begin to work together. The first motor is started, which drives the first lead screw in the vertical rail to move, causing the slider to slide. The clamping mechanism moves upward to pull the cable. During the pull, the rack moves upward, driving the gear to rotate, which in turn drives the third lead screw in the top rail to rotate, causing the sliding block to slide and drive the conical stamping block to squeeze the cable, simulating the impact of a sharp object. The pressure is detected by a pressure sensor. If the shape of the stamping block needs to be changed, the hand-tightened screw can be loosened and the sliding plate in the mounting rail can be pulled out. This effectively improves the device's detection adaptability and simulates various impact scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal front view structure of this utility model;

[0021] Figure 4 This is a top view of the internal structure of this utility model.

[0022] Reference numerals: 1. Base; 2. Frame; 3. Lifting mechanism; 31. Vertical rail; 32. First lead screw; 33. Slider; 34. First motor; 4. Pressure sensor; 5. Hanging ring; 6. Clamping mechanism; 61. Mounting base; 62. Second motor; 63. Horizontal rail; 64. Third motor; 65. Second lead screw; 66. Movable block; 67. Clamping plate; 68. Anti-slip groove; 69. Support frame; 610. Support groove; 611. Support block; 7. Pressing mechanism; 71. Rack; 72. Fixing plate; 73. Base plate; 74. Gear; 75. Top rail; 76. Sliding block; 77. Pressing assembly; 771. Side plate; 772. Mounting rail; 773. Slide plate; 774. Stamping block; 775. Hand-tightening screw; 78. Third lead screw; 8. Mounting hole. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 4 The cable strength testing device of this embodiment includes a base 1, a frame 2 fixedly installed on the top of the base 1, a lifting mechanism 3 fixedly installed on one side of the frame 2, a clamping mechanism 6 fixedly installed on the side of the lifting mechanism 3 inside the frame 2, a pressure applying mechanism 7 fixedly installed at the lower end inside the frame 2, the pressure applying mechanism 7 and the lifting mechanism 3 being connected by transmission, a pressure sensor 4 fixedly installed in the middle of the top of the base 1, and a hanging ring 5 fixedly installed on the top of the pressure sensor 4.

[0025] The lifting mechanism 3 includes a vertical rail 31, which is fixedly installed inside one side of the frame 2. A first lead screw 32 is rotatably connected inside the vertical rail 31, and a slider 33 is threadedly connected to the outer surface of the first lead screw 32. The slider 33 is slidably connected inside the vertical rail 31, and its inner side is connected to the clamping mechanism 6. A first motor 34 is connected to the top of the vertical rail 31, and the output end of the first motor 34 is fixedly connected through the top of the vertical rail 31 and the first lead screw 32. The base 1 provides stable support for the entire device, and the frame 2, which is fixed at the top, supports all components. The lifting mechanism 3 is located on one side of the frame 2, with the vertical rail 31 fixed within it. The first lead screw 32 is threadedly connected to the slider 33, which slides in conjunction with the vertical rail 31. The first motor 34 at the top drives the first lead screw 32, which can accurately drive the clamping mechanism 6 connected to it to move up and down during operation. The operation is convenient and lays the foundation for subsequent testing steps. The clamping mechanism 6 can stably fix the cable and facilitate different tests. The pressure sensor 4 at the top center of the base 1 is equipped with a hanging ring 5, which can monitor the cable stress in real time. The pressure application mechanism 7 at the lower end of the frame 2 is connected to the lifting mechanism 3 through transmission. The two work together to simulate various working conditions to apply pressure to the cable, comprehensively test the cable strength, and ensure the effectiveness and accuracy of the test.

[0026] refer to Figures 1-4 The clamping mechanism 6 includes a mounting base 61, which is fixedly mounted on the inner side of the slider 33. A second motor 62 is fixedly connected to the inner side of the mounting base 61, and a horizontal rail 63 is fixedly mounted on the outer side of the second motor 62. A third motor 64 is fixedly connected to one end of the horizontal rail 63. A second lead screw 65 is fixedly connected to the output end of the third motor 64 through the horizontal rail 63. The two ends of the second lead screw 65 have opposite thread directions, and both ends of the second lead screw 65 are threadedly connected to movable blocks 66. A clamping plate 67 is fixedly connected to the outer side of the movable block 66. Anti-slip grooves 68 are evenly spaced on the inner side of the clamping plate 67. The overall cross-sectional shape of the internal cavity of the horizontal rail 63 and the vertical rail 31 is set as a convex shape, and the shapes of the slider 33 and the movable block 66 are also set as convex. The second motor 62 inside the mounting base 61 cooperates with the outer horizontal rail 63. A third motor 64 at one end of the horizontal rail 63 drives the second lead screw 65. Because the threads at both ends of the second lead screw 65 turn in opposite directions, when rotating, it can drive the movable blocks 66 at both ends to move towards or away from each other, thereby precisely controlling the opening and closing of the clamping plate 67 to achieve reliable clamping of the cable. The anti-slip grooves 68 evenly spaced on the inner side of the clamping plate 67 increase the friction between the clamping plate and the cable and prevent the cable from slipping. In addition, the overall cross-section of the internal cavity of the horizontal rail 63 and the vertical rail 31, as well as the shape of the slider 33 and the movable block 66, are all designed as a convex shape. This fitting structure ensures that the movement of each component is accurate and stable, avoids deviation and disengagement, ensures smooth clamping operation, and facilitates cable strength testing.

[0027] refer to Figures 1-2A support frame 69 is fixedly installed on the outer side of the horizontal rail 63, and a support groove 610 is opened on the outer side of the vertical rail 31. A support block 611 is slidably connected to the inner side of the support groove 610. The outer side of the support block 611 is connected to the support frame 69. Mounting holes 8 are opened at the four corners of the top of the base 1. The mounting holes 8 are countersunk holes. The support frame 69 fixed on the outer side of the horizontal rail 63 and the support groove 610 opened on the outer side of the vertical rail 31 cooperate with each other. The support block 611 in the support groove 610 connects the two. In this way, when the device is running, In particular, when the clamping mechanism 6 is in motion, it can enhance the connection stability between the horizontal rail 63 and the vertical rail 31, reduce the risk of shaking and displacement, ensure the accuracy of the coordinated work of each component, and provide a stable support environment for cable strength testing. Furthermore, the four corners of the top of the base 1 are provided with countersunk mounting holes 8, which facilitates the installation and fixing of the device. The countersunk hole design prevents the bolt heads from being exposed after installation, avoiding interference with the operation of other components, while reducing the risk of collision and scratch caused by protrusions, ensuring that the overall layout of the device is neat and conducive to long-term stable use.

[0028] refer to Figures 3-4The pressure applying mechanism 7 includes a rack 71, a fixing plate 72, and a base plate 73. The rack 71 is fixedly installed at the front end of the support frame 69. The fixing plate 72 is fixedly installed at the top front end of the base 1. A gear 74 is rotatably connected to the upper end of the fixing plate 72, and the gear 74 meshes with the rack 71. The base plate 73 is fixedly installed on one side of the top of the base 1. A top rail 75 is fixedly installed on the top of the base plate 73. A sliding block 76 is slidably connected inside the top rail 75. The sliding block 76 is provided with a pressure applying component 77. A third lead screw 7 is rotatably connected to the inner side of the top rail 75. 8. The third lead screw 78 is rotatably connected to the inside of the top rail 75. The third lead screw 78 and the sliding block 76 are threadedly connected. The rear end of the third lead screw 78 is connected to the front of the gear 74. The pressure application assembly 77 includes a side plate 771, which is fixedly installed on the outside of the sliding block 76. A mounting rail 772 is fixedly connected to the outside of the side plate 771. A sliding plate 773 is slidably connected to the inside of the mounting rail 772. A stamping block 774 is fixedly connected to the side of the sliding plate 773 near the hanging ring 5. The cross-sectional shape of the stamping block 774 is an isosceles triangle. The outer end of the mounting rail 772 is threaded with a hand-tightening screw 775. The end of the hand-tightening screw 775 passes through the mounting rail 772 and is threadedly connected to the side plate 771. When the device is running, such as when the clamping mechanism 6 moves the cable, the rack 71 moves in tandem, precisely driving the gear 74 to rotate. The gear 74 is connected to the third lead screw 78 inside the top rail 75. The third lead screw 78 is threadedly connected to the sliding block 76, which can convert the rotational motion into linear sliding of the sliding block 76 within the top rail 75, driving the pressure application component 77 to move. In the pressure application component 77, the side plate 77... 1. Fixed to the outside of the sliding block 76, the mounting rail 772 connected to it can slide to install the slide plate 773. The isosceles triangular cross-section punch block 774 on the slide plate 773 can effectively simulate the pressure of a sharp object on the cable to test the cable's compressive strength. Furthermore, it is threaded to the side plate 771 through the mounting rail 772 by a hand-tightening screw 775. When it is necessary to replace different punch blocks 774, the slide plate 773 can be pulled out by loosening the screw. The operation is convenient and the pressure mode can be quickly adjusted to adapt to various testing needs and ensure that the cable strength test is carried out comprehensively and accurately.

[0029] Operating principle and advantages: During use, the bottom of the cable is attached to the hanging ring 5 located on the bottom pressure sensor 4. Then, the upper end of the cable is placed between the inner sides of the two clamping plates 67. The second motor 62 is then started, driving the second lead screw 65 to rotate inside the horizontal rail 63. Since the threads at both ends of the second lead screw 65 rotate in opposite directions, its rotation synchronously drives the movable block 66 to move, thereby causing the two clamping plates 67 to reciprocate relative to each other, thus clamping the cable. During this process, the anti-slip grooves 68 on the clamping plates 67 effectively prevent slippage. Furthermore, if further operation is required, the second motor 62 is started again, driving the horizontal rail 63 to rotate. The rotation of the horizontal rail 63 further assists in driving the clamping plates 67 to rotate, causing the cable to be wound smoothly onto the outer surface of the clamping plates 67. This stable clamping and positioning of the cable ensures accuracy during testing.

[0030] Secondly, utilizing the design of the pressure application mechanism 7 and the lifting mechanism 3 working together, after the cable clamping is completed, the first motor 34 is started. The first motor 34 drives the first lead screw 32 inside the vertical rail 31 to move, causing the slider 33 to slide within the vertical rail 31, thereby driving the entire clamping mechanism 6 to move upward, realizing the pulling of the cable. During the pulling process, the rack 71 moves upward accordingly, driving the gear 74 meshing with it to rotate. The rotation of the gear 74 then drives the third lead screw 78 inside the top rail 75 to rotate. The rotation of the third lead screw 78 drives the sliding block 76 to move on the top rail. The internal sliding mechanism 75 assists in driving the stamping block 774 to compress the cable. The stamping block 774 is conical, which can simulate the impact of a sharp object on the cable and detect the pressure intensity that the cable can withstand. The pressure data can be quickly measured by the pressure sensor 4. In addition, if a stamping block 774 of a different shape needs to be replaced, simply loosen the hand-tightening screw 775 to pull out the slide plate 773 inside the mounting rail 772, which can easily complete the disassembly and assembly of the stamping block 774, improve the overall detection and adaptability performance of the device, and simulate the actual pressure bearing of the cable when various objects impact the cable.

Claims

1. A cable strength testing apparatus comprising a base, characterised in that: A frame is fixedly installed on the top of the base, a lifting mechanism is fixedly installed on one side of the frame, a clamping mechanism is fixedly installed on the side of the lifting mechanism located inside the frame, a pressure applying mechanism is fixedly installed at the lower inside of the frame, the pressure applying mechanism and the lifting mechanism are connected in a transmission manner, a pressure sensor is fixedly installed in the middle of the top of the base, and a hanging ring is fixedly installed on the top of the pressure sensor. The lifting mechanism includes a vertical rail, which is fixedly installed on one side of the inside of the frame. A first lead screw is rotatably connected inside the vertical rail. A slider is threadedly connected to the outer surface of the first lead screw. The slider is slidably connected inside the vertical rail. The inner side of the slider is connected to a clamping mechanism. A first motor is connected to the top of the vertical rail. The output end of the first motor passes through the top of the vertical rail and is fixedly connected to the top of the first lead screw.

2. A cable strength testing device according to claim 1, wherein: The clamping mechanism includes a mounting base, which is fixedly installed on the inner side of the slider. A second motor is fixedly connected to the inner side of the mounting base, and a horizontal rail is fixedly installed on the outer side of the second motor. A third motor is fixedly connected to one end of the horizontal rail, and a second lead screw is fixedly connected to the output end of the third motor through the horizontal rail. The two ends of the second lead screw have opposite thread directions, and both ends of the second lead screw are threadedly connected to movable blocks. A clamping plate is fixedly connected to the outer side of the movable blocks.

3. The cable strength testing device according to claim 2, characterized in that: The clamping plate has anti-slip grooves at equal intervals on its inner side. The overall cross-sectional shape of the internal cavity of the horizontal rail and the vertical rail is set to a convex shape. The slider and the movable block are also set to a convex shape.

4. A cable strength testing device according to claim 2, wherein: A support frame is fixedly installed on the outer side of the horizontal rail, and a support groove is opened on the outer side of the vertical rail. A support block is slidably connected to the inner side of the support groove, and the outer side of the support block is connected to the support frame.

5. A cable strength testing device as claimed in claim 1, wherein: Mounting holes are provided at the four corners of the top of the base, and the mounting holes are countersunk holes.

6. A cable strength testing device as claimed in claim 4, wherein: The pressure-applying mechanism includes a rack, a fixed plate, and a base plate. The rack is fixedly installed at the front end of the support frame. The fixed plate is fixedly installed at the top front end of the base. A gear is rotatably connected to the upper end of the fixed plate. The gear and the rack are meshed together. The base plate is fixedly installed on one side of the top of the base. A top rail is fixedly installed on the top of the base. A sliding block is slidably connected inside the top rail. The sliding block is equipped with a pressure-applying component. A third lead screw is rotatably connected to the inner side of the top rail. The third lead screw is rotatably connected inside the top rail. The third lead screw and the sliding block are threaded together. The rear end of the third lead screw is connected to the front end of the gear.

7. A cable strength testing device according to claim 6, wherein: The pressure-applying component includes a side plate, which is fixedly installed on the outside of the sliding block. An installation rail is fixedly connected to the outside of the side plate, and a sliding plate is slidably connected to the inside of the installation rail. A stamping block is fixedly connected to the side of the sliding plate near the hanging ring. The cross-sectional shape of the stamping block is an isosceles triangle. A hand-tightening screw is threaded to the outer end of the installation rail, and the end of the hand-tightening screw passes through the installation rail and is threadedly connected to the side plate.

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