A cable tensile resistance detection device

Abstract

The utility model relates to a kind of cable tensile resistance performance detection devices, belong to cable detection technical field.The cable tensile resistance performance detection device, including: detector body and the controller and clamping table installed on the surface of detector body;Clamping mechanism, the clamping mechanism includes two positioning blocks respectively arranged in the lower of controller and the surface of clamping table, the surface of the positioning block is fixedly connected with positioning wheel, two The side of mutually far away of positioning wheel is provided with clamping block;Through the clamping and fixing of cable of setting positioning wheel cooperation arc clamping block, the arc surface of arc clamping block cooperation positioning wheel provides greater wrapping contact area, evenly disperses concentrated stress, to prevent slipping while exerting enough clamping force, greatly avoid the cable local pressure loss or deformation caused by excessive pressure, to improve the accuracy of test data.

Description

Technical Field

[0001] This utility model relates to the field of cable testing technology, and in particular to a cable tensile performance testing device. Background Technology

[0002] Cables are conductive wires used to transmit electrical energy or signals, consisting of a conductor, insulation layer, and sheath. Tensile strength testing is crucial because cables often withstand significant tensile forces during installation and may also face their own weight and external mechanical stresses during daily operation. This test verifies structural integrity, ensuring that the core wires do not break or degrade under stress, thus guaranteeing the stability of power transmission and long-term reliability. A cable tensile strength testing device is required when testing cables.

[0003] Traditional cable tensile performance testing devices typically clamp the two ends of the cable using an adjustable clamping mechanism. This clamping mechanism clamps the cable by adjusting two clamping blocks to apply pressure to the middle of the cable. This can easily damage the cable surface if the clamping force is too great, thus affecting the accuracy of the cable's tensile value. Utility Model Content

[0004] Therefore, it is necessary to provide a cable tensile performance testing device to address the problem that clamping mechanisms can easily damage the surface of cables, thus affecting the accuracy of testing.

[0005] A cable tensile strength testing device includes: a testing instrument body, a controller mounted on the surface of the testing instrument body, and a clamping platform;

[0006] The clamping mechanism includes two positioning blocks respectively disposed below the controller and on the surface of the clamping table. Positioning wheels are fixedly connected to the surface of the positioning blocks, and clamping blocks are provided on the sides of the two positioning wheels that are far apart from each other.

[0007] In one embodiment, an adjustment component is provided between the clamping block and the positioning block, and the adjustment component is located on one side of the positioning block.

[0008] In one embodiment, the clamping block is arc-shaped, and the inner side of the clamping block is provided with anti-slip texture.

[0009] In one embodiment, a mounting block is fixedly connected to the lower part of the controller, and a limiting groove is formed inside the mounting block. A second limiting block is fixedly connected to the top of a positioning block located below the controller. The positioning block is installed below the mounting block through the second limiting block and the limiting groove.

[0010] In one embodiment, a limiting hole is formed on the surface of the clamping stage, and a first limiting block is fixedly connected to the bottom end of the positioning block located above the clamping stage. The positioning block is installed on the surface of the clamping stage through the first limiting block and the limiting hole.

[0011] In one embodiment, the adjustment assembly includes a slide rail fixedly connected to one side of the positioning block, a threaded rod is provided inside the slide rail, both ends of the threaded rod are rotatably connected to the inner wall of the slide rail, and a knob is provided at the bottom end of the threaded rod.

[0012] In one embodiment, an adjusting block is fixedly connected to the outer side of the clamping block, and the adjusting block is slidably connected to the inner wall of the positioning block.

[0013] In one embodiment, one end of the adjusting block extends into the slide rail and is slidably connected to the slide rail, and the end of the adjusting block located inside the slide rail is disposed on the surface of the threaded rod.

[0014] Beneficial effects

[0015] 1. By setting positioning wheels and arc-shaped clamps to clamp and fix the cable, the arc-shaped clamps and the arc-shaped surfaces of the positioning wheels provide a larger wrapping contact area, which evenly distributes concentrated stress. Thus, while applying sufficient clamping force to prevent slippage, it greatly avoids local pressure damage or deformation of the cable caused by excessive pressure, thereby improving the accuracy of test data.

[0016] 2. By setting up adjustment components, the clamping blocks and positioning wheels can be used to adjust cables of different sizes and thus stably clamp them. At the same time, with two limit blocks and corresponding limit grooves and limit holes, the positioning blocks can be quickly disassembled and assembled, which facilitates the maintenance of the clamping mechanism, saves time for replacing and adjusting the clamping mechanism, and thus improves the testing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[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 overall structure of the clamping mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation of the positioning block of this utility model;

[0021] Figure 4 This is an exploded view of the clamping mechanism of this utility model;

[0022] Figure 5 This is a cross-sectional view of the positioning block of this utility model.

[0023] Figure label:

[0024] 100. Detector body; 200. Controller; 300. Clamping platform; 310. Limiting hole; 311. First limiting block; 400. Clamping mechanism; 410. Positioning block; 420. Positioning wheel; 430. Clamping block; 431. Anti-slip texture; 440. Mounting block; 441. Limiting groove; 442. Second limiting block; 450. Adjustment component; 451. Slide rail; 452. Threaded rod; 453. Adjustment block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The following is combined Figure 1 - Figure 5 This invention describes a cable tensile performance testing device.

[0027] In one embodiment, a cable tensile strength testing device, such as Figure 1 As shown, the cable tensile performance testing device of this embodiment includes: a testing instrument body 100, a controller 200 and a clamping table 300 mounted on the surface of the testing instrument body 100.

[0028] The clamping mechanism 400 includes two positioning blocks 410 respectively disposed below the controller 200 and on the surface of the clamping table 300. Positioning wheels 420 are fixedly connected to the surface of the positioning blocks 410, and clamping blocks 430 are provided on the side of the two positioning wheels 420 that are far apart from each other.

[0029] The detector body 100 in this device is model TFTM-100N; it mainly includes a sensor unit, a signal processing unit, a data acquisition and transmission module, and fixed installation components. The sensor unit is the core component, usually containing a high-precision fiber optic strain sensor, which is directly installed on the designated monitoring point of the optical cable and firmly fixed to the surface of the optical cable with a special clamp to ensure synchronous deformation with the optical cable. The signal processing unit is integrated near the sensor or independently packaged, containing an optical demodulation module and circuitry, used to process the grating reflection signal. Its installation position is usually near the tower or optical cable junction box to avoid the influence of harsh environments. The data acquisition and transmission module has a built-in microprocessor and communication interface, and can be fixed in the crossarm of the tower or in the control box to realize remote monitoring. The fixed installation components include stainless steel clamps, anti-slip bolts, and a protective shell to ensure that the equipment is stably fixed to the optical cable and support structure for a long time in harsh outdoor environments.

[0030] When the detector body 100 is activated, the optical cable deforms due to external tension. The sensor fixed to the surface of the cable stretches or compresses accordingly, causing a change in the grating period and thus shifting the center wavelength of the reflected light. The demodulator in the signal processing unit emits broadband light and receives the reflected signal, calculating the wavelength shift in real time. Using a calibration formula, the wavelength change is converted into a precise tension value. The data acquisition module digitizes and stores the tension signal and transmits it to the monitoring center via a communication network. Combined with the software analysis system, continuous tension monitoring, over-limit alarms, and trend prediction are achieved, ensuring the safe operation of the optical cable.

[0031] The controller 200 includes a robust, waterproof connector and an LED status indicator. It works by establishing a communication channel through a physical connection and transmitting basic information via light coding. Technicians use a dedicated cable to connect a computer to this connector and send commands through the host computer software to configure parameters or read data. Simultaneously, the indicator light uses different flashing modes, such as constant light, slow flashing, and fast flashing, to intuitively display the device's operating status, power condition, or abnormal alarms, thus enabling on-site diagnosis and interaction without opening the device casing, ensuring its airtightness and reliability for long-term outdoor operation.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an adjustment component 450 is provided between the clamping block 430 and the positioning block 410, and the adjustment component 450 is located on one side of the positioning block 410. The clamping block 430 is arc-shaped, and the inner side of the clamping block 430 is provided with anti-slip texture 431. A mounting block 440 is fixedly connected to the lower part of the controller 200. A limit groove 441 is formed inside the mounting block 440. A second limit block 442 is fixedly connected to the top of the positioning block 410 located below the controller 200. The positioning block 410 is installed below the mounting block 440 through the second limit block 442 and the limit groove 441. A limit hole 310 is formed on the surface of the clamping table 300. A first limit block 311 is fixedly connected to the bottom end of the positioning block 410 located above the clamping table 300. The positioning block 410 is installed on the surface of the clamping table 300 through the first limit block 311 and the limit hole 310.

[0033] In this embodiment, when the clamping block 430 is driven to move towards the positioning wheel 420 by the adjusting component 450, the corresponding knob is rotated. Rotating the knob drives the threaded rod 452 to rotate. The rotation of the threaded rod 452 will drive the adjusting block 453 to move synchronously. As the adjusting block 453 moves, it will drive the clamping block 430 to move synchronously, thereby squeezing the cable inside the positioning wheel 420 through the clamping block 430. At the same time, the inner side of the clamping block 430 and the anti-slip texture 431 inside it are made of rubber. By increasing the pressure of the clamping block 430 on the cable, the cable is fixed to the surface of the positioning wheel 420. At the same time, by increasing the contact area, the friction is increased. The adjusting block 453 includes an "L"-shaped connecting rod fixedly connected to the outer surface of the clamping block 430. The connecting rod penetrates into the interior of the positioning block 410 and slides through the inner wall of the positioning block 410. At the same time, a connecting block is fixedly connected to one side of the "L"-shaped connecting rod. The connecting block is inserted into the slide rail 451 through the positioning block 410 and slides through the slide rail 451.

[0034] It should be noted that this device optimizes the traditional tensile testing instrument's method of clamping the cable on both sides with clamping blocks 430 by wrapping the cable inside the positioning wheel 420 and clamping it with pressure applied by the clamping blocks 430. This method increases the stability of cable clamping and reduces damage to the clamping parts of the cable during stretching, thereby improving the accuracy of the test. It will not affect any components other than the positioning block 410, so this device will not affect the testing process.

[0035] like Figure 2 , Figure 4 and Figure 5As shown, the adjusting assembly 450 includes a slide rail 451 fixedly connected to one side of the positioning block 410. A threaded rod 452 is disposed inside the slide rail 451, with both ends of the threaded rod 452 rotatably connected to the inner wall of the slide rail 451. A knob is disposed at the bottom end of the threaded rod 452. An adjusting block 453 is fixedly connected to the outer side of the clamping block 430, and the adjusting block 453 is slidably connected to the inner wall of the positioning block 410. One end of the adjusting block 453 extends into the slide rail 451 and is slidably connected to the slide rail 451. The end of the adjusting block 453 located inside the slide rail 451 is disposed on the surface of the threaded rod 452.

[0036] In this embodiment, when maintenance is required on the clamping mechanism 400 of this device, the part can be removed directly for maintenance. The specific steps are as follows: rotate the lower positioning block 410 counterclockwise so that the slotted pin at the bottom of the positioning block 410 is aligned with the mounting hole on the surface of the clamping table 300, and then remove it directly. Similarly, rotate the upper positioning block 410 counterclockwise until it is aligned with the mounting groove of the mounting block 440, and then remove it directly. After maintenance, align the positioning block with the mounting hole and the mounting groove respectively, insert it, move it to the designated position, and then rotate it clockwise. It should be noted that a magnetic block is provided on the lower surface of the worktable at the position corresponding to the slotted pin. When the pin is rotated to the designated position, the pin will cooperate with the magnetic block to complete the fixation. The same applies to the inside of the mounting groove.

[0037] Working principle: First, wrap one end of the cable around the lower positioning wheel 420 half a turn, and drive the clamping block 430 to move towards the positioning wheel 420 through the adjusting component 450. The clamping block 430 and the positioning wheel 420 work together to fix the cable to the surface of the positioning wheel 420 through friction. Then, wrap the other end around the upper positioning wheel 420 half a turn. Repeat the above operation to fix the other end of the cable to the surface of the positioning wheel 420. Then start the tester and stretch the cable for testing.

[0038] It should be noted that the detector body 100, controller 200, clamping table 300 and threaded rod 452 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the detector body 100 and controller 200 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for testing the tensile strength of cables, characterized in that, include: The detector body (100) and the controller (200) and clamping stage (300) mounted on the surface of the detector body (100); The clamping mechanism (400) includes two positioning blocks (410) respectively disposed below the controller (200) and on the surface of the clamping table (300). Positioning wheels (420) are fixedly connected to the surface of the positioning blocks (410), and clamping blocks (430) are provided on the side of the two positioning wheels (420) that are far apart from each other.

2. The cable tensile performance testing device according to claim 1, characterized in that, An adjustment component (450) is provided between the clamping block (430) and the positioning block (410), and the adjustment component (450) is located on one side of the positioning block (410).

3. The cable tensile performance testing device according to claim 1, characterized in that, The clamping block (430) is arc-shaped, and the inner side of the clamping block (430) is provided with anti-slip texture (431).

4. The cable tensile performance testing device according to claim 1, characterized in that, A mounting block (440) is fixedly connected to the lower part of the controller (200). A limiting groove (441) is opened inside the mounting block (440). A second limiting block (442) is fixedly connected to the top of the positioning block (410) located below the controller (200). The positioning block (410) is installed below the mounting block (440) through the second limiting block (442) cooperating with the limiting groove (441).

5. The cable tensile performance testing device according to claim 4, characterized in that, The surface of the clamping platform (300) is provided with a limiting hole (310). The bottom end of the positioning block (410) located above the clamping platform (300) is fixedly connected to a first limiting block (311). The positioning block (410) is installed on the surface of the clamping platform (300) through the first limiting block (311) cooperating with the limiting hole (310).

6. The cable tensile performance testing device according to claim 2, characterized in that, The adjustment assembly (450) includes a slide rail (451) fixedly connected to one side of the positioning block (410). A threaded rod (452) is provided inside the slide rail (451). Both ends of the threaded rod (452) are rotatably connected to the inner wall of the slide rail (451). A knob is provided at the bottom end of the threaded rod (452).

7. The cable tensile performance testing device according to claim 6, characterized in that, An adjusting block (453) is fixedly connected to the outside of the clamping block (430), and the adjusting block (453) is slidably connected to the inner wall of the positioning block (410).

8. The cable tensile performance testing device according to claim 7, characterized in that, One end of the adjusting block (453) extends into the slide rail (451) and is slidably connected to the slide rail (451). The end of the adjusting block (453) located inside the slide rail (451) is set on the surface of the threaded rod (452).

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