A cable reliability detection device

Abstract

The utility model relates to a cable reliability detection device belongs to cable detection technical field, including two support frame components of symmetrical settings, synchronous lifting mechanism and cable test module. The utility model discloses the adaptive chuck design of combination, and the structure adaptation of cooperation arc -shaped groove and semicircular arc clamping plate, can according to the automatic regulation clamping amplitude of cable diameter, need not frequently replace the fixture to be able to adapt the clamping demand of different specifications cable, effectively solved the problem of traditional fixed size fixture operation cumbersome, time -consuming. At the same time, the inner wall of clamping plate and cable outer circle face accurate adhesion, and the smooth processing of outer wall can avoid the skin scratch, core wire damage caused by rigid clamping, both guarantee the cable follow -on use performance, and ensure that the cable position is stable in the detection process, improve the accuracy of detection result.

Description

Technical Field

[0001] This utility model belongs to the field of cable testing technology, and specifically relates to a cable reliability testing device. Background Technology

[0002] In fields such as power transmission, communication networks, and industrial control, cables serve as core connection and transmission components, and their operational reliability directly determines the stability and security of the entire system. As the industry's requirements for cable transmission efficiency, anti-interference capabilities, and service life continue to increase, reliability testing before delivery and during operation and maintenance has become a crucial step in ensuring cable quality. Testing typically covers core indicators such as insulation performance, mechanical strength, and resistance to environmental corrosion.

[0003] Current cable reliability testing devices on the market have many limitations in structural design and functional implementation, making it difficult to meet the testing requirements of efficient, accurate, and adaptable to multiple cable specifications. Firstly, most devices use a fixed-size clamping mechanism, which can only adapt to cables of a single diameter. When testing cables of different specifications, it is necessary to frequently change the clamps, which is cumbersome and time-consuming, significantly reducing testing efficiency. Secondly, traditional clamping structures are mostly rigid clamps. If the clamping force is not properly controlled, it can easily cause scratches on the cable sheath or damage to the internal core wires, affecting the accuracy of the test results and the subsequent performance of the cable. Therefore, this application provides a cable reliability testing device to meet these requirements. Summary of the Invention

[0004] To overcome the problems in the prior art, this utility model provides a cable reliability testing device.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A cable reliability testing device mainly includes two symmetrically arranged support frame components, a synchronous lifting mechanism, and a cable testing module; The support frame assembly includes a mounting plate and a fixing plate. The two mounting plates are detachably connected to the outer side walls of the synchronous lifting mechanism and the fixing plate, forming a two-sided support structure for the device. The synchronous lifting mechanism is installed on the outer wall of the inner cavity of one of the mounting plates. One end of the cable test module is slidably connected to the synchronous lifting mechanism, and the other end is slidably connected to the fixed plate, so as to realize the position adjustment along the height direction of the device. The cable testing module includes an upper pressure plate, a lower pressure plate, a dielectric coating device, a cable performance sensor, and an adaptive clamp. The upper and lower pressure plates are parallel and opposite to each other, and both are slidably assembled between a synchronous lifting mechanism and a fixed plate. The adaptive clamp includes a spring, a telescopic rod, and a clamping plate. Arc-shaped grooves are formed on the inner sides of the upper and lower pressure plates. The two ends of the spring are respectively fixed to the two ends of the inner sidewall of the arc-shaped groove. The clamping plate is fixedly connected to the top of the spring. One end of the telescopic rod is fixedly connected to the middle of the lower end of the clamping plate, and the other end is fixed to the bottom of the arc-shaped groove. The medium coater is fixed to the top of the upper pressure plate. The upper end face of the upper pressure plate is provided with a medium injection hole corresponding to the medium coater. The output end of the medium coater can extend into the arc-shaped groove through the medium injection hole. The cable performance sensor is fixed to the bottom of the lower pressure plate and corresponds to the clamp on the lower pressure plate, and is used to detect the reliability parameters of the cable.

[0006] Preferably, the synchronous lifting mechanism includes a support base, a drive motor, a bidirectional lead screw, a bearing ring, and sliders; the support base is fixed to the outer wall of the mounting plate, the drive motor is fixed to the top of the support base, a groove is formed on the middle surface of the support base, the bidirectional lead screw is arranged along the length of the groove, one end of the lead screw is fixedly connected to the output end of the drive motor, and the other end is rotatably connected to the bearing ring, the bearing ring is fixed to the end of the groove, and two sliders are provided, which are respectively engaged with the two ends of the outer wall of the bidirectional lead screw, and the outer ends of the two sliders are fixedly connected to the outer walls of the upper pressure plate and the lower pressure plate, so as to realize the synchronous lifting and lowering adjustment of the upper pressure plate and the lower pressure plate.

[0007] Preferably, the support base and the fixed plate have the same structure, and guide rails are provided on their respective inner sides. The guide rails extend along the height direction of the support base and the fixed plate and are symmetrically distributed. The inner cavity of the guide rail is slidably connected to a positioning block. The outer wall of the positioning block is fixedly connected to the ends of the upper pressure plate and the lower pressure plate, respectively, to form a guide structure for the upper pressure plate and the lower pressure plate to slide.

[0008] Preferably, a sensor exposure window is provided on the bottom surface of the lower pressure plate, and the sensor exposure window extends through the clamping plate along the length direction of the lower pressure plate. The cable performance sensor is fixed at the bottom of the sensor exposure window, and its detection end can contact the cable surface through the sensor exposure window.

[0009] Preferably, the medium coating device includes a built-in sprayer, a spray gun, and a paint supply line. One end of the paint supply line is connected to the output end of the sprayer, and the other end is connected to the input end of the spray gun. The output end of the spray gun corresponds to the medium injection hole, which can spray the detection medium onto the surface of the cable in the arc groove.

[0010] Preferably, the clamp is semi-circular in shape, its inner wall is adapted to the outer circular surface of the cable, and the outer wall of the clamp is a smooth surface.

[0011] Preferably, the slider is connected to the upper pressure plate and the lower pressure plate by bolt fixing, and the inner wall of the slider is provided with an internal thread that is compatible with the bidirectional lead screw to ensure the stability of the meshing transmission.

[0012] The beneficial effects of this invention are as follows: This device, through its combined adaptive clamp design and the structural adaptation of the arc groove and semi-circular arc clamping plate, can automatically adjust the clamping range according to the cable diameter. It can adapt to the clamping needs of different cable specifications without frequent clamp changes, effectively solving the problems of cumbersome and time-consuming operation of traditional fixed-size clamps. At the same time, the inner wall of the clamping plate precisely fits the outer surface of the cable, and the smooth outer wall treatment avoids scratches on the outer sheath and damage to the core wire caused by rigid clamping. This ensures both the subsequent performance of the cable and the stability of the cable position during testing, improving the accuracy of the test results.

[0013] The detection structure is formed by the dielectric coating device on the top of the upper pressure plate and the cable performance sensor on the bottom of the lower pressure plate: the dielectric coating device can directly spray the detection medium onto the cable surface in the arc groove through the medium injection hole, without the need for manual cable transfer; the cable performance sensor directly contacts the cable surface through the sensor exposure window to obtain reliability parameters in real time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the synchronous lifting mechanism of this utility model.

[0016] Figure 3 This is an exploded view of the cable testing module structure of this utility model.

[0017] Figure 4 This is a cross-sectional view of the slider structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model.

[0019] In the diagram: 1. Mounting plate; 2. Synchronous lifting mechanism; 201. Support base; 202. Drive motor; 203. Two-way lead screw; 204. Bearing ring; 205. Slider; 206. Guide rail; 3. Cable testing module; 301. Upper pressure plate; 302. Lower pressure plate; 303. Clamping plate; 304. Telescopic rod; 305. Spring; 306. Medium injection hole; 307. Medium coating device; 308. Cable performance sensor; 309. Sensor exposure window; 4. Fixing plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0021] This utility model discloses a cable reliability testing device, which mainly includes two symmetrically arranged support frame components, a synchronous lifting mechanism 2, and a cable testing module 3. The support frame assembly includes a mounting plate 1 and a fixing plate 4. The two mounting plates 1 are detachably connected to the outer side wall of the synchronous lifting mechanism and the fixing plate 4, respectively, forming the two-side support structure of the device. The synchronous lifting mechanism 2 is installed on the outer wall of the inner cavity of one of the mounting plates 1. One end of the cable test module 3 is slidably connected to the synchronous lifting mechanism 2, and the other end is slidably connected to the fixed plate 4, so as to realize the position adjustment along the height direction of the device. The cable testing module 3 includes an upper pressure plate 301, a lower pressure plate 302, a dielectric coating device 307, a cable performance sensor 308, and an adaptive clamp. The upper pressure plate 301 and the lower pressure plate 302 are parallel and opposite to each other, and both are slidably assembled between the synchronous lifting mechanism and the fixed plate 4. The adaptive clamp includes a spring 305, a telescopic rod 304, and a clamping plate 303. The upper pressure plate 301 and the lower pressure plate 302 are respectively provided with arc-shaped grooves on their opposite inner sides. The two ends of the spring 305 are respectively fixed to the two ends of the inner sidewall of the arc-shaped groove. The clamping plate 303 is fixedly connected to the top of the spring 305. One end of the telescopic rod 304 is fixedly connected to the middle of the lower end of the clamping plate 303, and the other end is fixed to the bottom of the arc-shaped groove. The medium coater 307 is fixed to the top of the upper pressure plate 301. The upper end face of the upper pressure plate 301 is provided with a medium injection hole 306 corresponding to the medium coater 307. The output end of the medium coater 307 can extend into the arc-shaped groove through the medium injection hole 306. The cable performance sensor 308 is fixed to the bottom of the lower pressure plate 302 and corresponds to the clamping plate 303 on the lower pressure plate 302, and is used to detect the reliability parameters of the cable.

[0022] The synchronous lifting mechanism 2 includes a support base 201, a drive motor 202, a bidirectional lead screw 203, a bearing ring 204, and a slider 205. The support base 201 is fixed to the outer wall of the mounting plate 1, the drive motor 202 is fixed to the top of the support base 201, and a groove is formed on the middle surface of the support base 201. The bidirectional lead screw 203 is arranged along the length of the groove, one end of which is fixedly connected to the output end of the drive motor 202, and the other end is rotatably connected to the bearing ring 204, which is fixed to the end of the groove. Two sliders 205 are provided, which are respectively meshed and connected to the two ends of the outer wall of the bidirectional lead screw 203. The outer ends of the two sliders 205 are fixedly connected to the outer walls of the upper pressure plate 301 and the lower pressure plate 302, realizing the synchronous lifting and lowering adjustment of the upper pressure plate 301 and the lower pressure plate 302. The meshing transmission design of the bidirectional lead screw 203 and the two sliders 205 can drive the upper pressure plate 301 and the lower pressure plate 302 to achieve synchronous lifting and lowering in the same direction and at the same speed, avoiding the problem of "asynchronous lifting and lowering on both sides and tilting of the pressure plate" in the traditional single lead screw drive. This ensures that the cable is always in a horizontal clamping state, preventing problems such as uneven medium coating and poor sensor contact caused by clamping tilt. The drive motor 202 provides stable power output, which, together with the precise transmission of the bidirectional lead screw 203, can quickly adjust the pressure plate to the target height. Compared with traditional manual or hydraulic adjustment, the adjustment efficiency is greatly improved, and the height adjustment error is smaller, making it suitable for different detection scenarios.

[0023] The support base 201 and the fixed plate 4 have the same structure. Both of them have guide rails 206 on their inner sides. The guide rails 206 extend along the height direction of the support base 201 and the fixed plate 4 and are symmetrically distributed. The inner cavity of the guide rail 206 is slidably connected to a positioning block. The outer wall of the positioning block is fixedly connected to the end of the upper pressure plate 301 and the lower pressure plate 302, forming a guide structure for the upper pressure plate 301 and the lower pressure plate 302 to slide. The symmetrical T-shaped guide rails 206 on the support base 201 and the fixed plate 4 slide in cooperation with the positioning blocks at the end of the pressure plate, effectively limiting the left and right swaying and front and back offset during the lifting and lowering of the pressure plate, avoiding the offset of the pressure plate caused by device vibration or external force interference, ensuring the stability of the cable position during the detection process, and further improving the reliability of the detection data. The sliding connection between the positioning block and the guide rail 206 can distribute the force when the pressure plate is lifted and lowered, avoiding the slider 205 and the bidirectional screw from bearing the weight of the pressure plate alone, reducing screw wear and slider deformation, extending the service life of the synchronous lifting mechanism 2, and reducing the frequency and cost of equipment maintenance.

[0024] The bottom surface of the lower pressure plate 302 is provided with a sensor exposure window 309, which extends through the clamping plate 303 along the length of the lower pressure plate 302. The cable performance sensor 308 is fixed to the bottom of the sensor exposure window 309, and its detection end can contact the cable surface through the sensor exposure window 309. The open design of the sensor exposure window 309 facilitates the installation, disassembly, and calibration of the cable performance sensor. The sensor can be replaced without disassembling the lower pressure plate 302. Compared with the traditional structure of built-in sensor and overall disassembly, it reduces the difficulty of operation and maintenance. The sensor exposure window 309 extends through the clamping plate, allowing the sensor detection end to directly and closely contact the cable surface, avoiding indirect detection and signal attenuation problems caused by the lower pressure plate 302 or clamping plate blocking the signal.

[0025] The media coating device 307 includes a built-in sprayer, a spray gun, and a paint supply line. One end of the paint supply line is connected to the output end of the sprayer, and the other end is connected to the input end of the spray gun. The output end of the spray gun corresponds to the media injection hole 306, which can spray the test medium onto the cable surface in the arc groove. The built-in sprayer can accurately control the media output. Combined with the atomization spraying function of the spray gun, when the test medium is sprayed onto the cable surface through the media injection hole, the coating thickness is relatively uniform, avoiding the problems of "uneven thickness and missed coating" in traditional manual brushing. This ensures the accuracy of environmental adaptability test results such as corrosion resistance. The paint supply line is directly connected to the sprayer and the spray gun, eliminating the need for manual addition of media and enabling continuous spraying, making it suitable for batch cable testing scenarios.

[0026] The clamp 303 is semi-circular in shape, and its inner wall is adapted to the outer circular surface of the cable. The outer wall of the clamp 303 is a smooth surface to avoid scratching the cable sheath during clamping. The inner wall of the semi-circular clamp 303 is completely fitted to the outer circular surface of the cable, which can effectively prevent the cable from rotating or sliding during the testing process. It is especially suitable for clamping cables with circular cross-sections, ensuring that the cable position is fixed during the testing process.

[0027] The slider 205 is connected to the upper pressure plate 301 and the lower pressure plate 302 by bolt fixing. The inner wall of the slider 205 is provided with an internal thread that matches the bidirectional lead screw 203, ensuring the stability of the meshing transmission. Compared with traditional welding or snap-fit ​​connections, the bolt fixing method is easier to disassemble and has higher connection strength. It can withstand the weight of the pressure plate and cable, preventing the slider from falling off the pressure plate after long-term use and ensuring the structural safety of the device. The internal thread on the inner wall of the slider 205 is precisely matched with the bidirectional lead screw 203, reducing the gap in the meshing transmission process, ensuring smooth transmission of the lifting mechanism, and further improving the synchronization and adjustment accuracy of the pressure plate lifting.

[0028] Working process: The cable to be tested is placed in the arc-shaped groove of the lower pressure plate 302. The drive motor 202 of the synchronous lifting mechanism 2 is started, driving the bidirectional lead screw 203 to rotate, causing the double slider 205 to drive the upper pressure plate 301 to slide downward. The semi-circular arc clamping plates 303 of the upper pressure plate 301 and the lower pressure plate 302 automatically adapt to the cable diameter under the action of the spring 305 and the telescopic rod 304 until the cable is tightly clamped, and the smooth clamping plates 303 avoid scratching the outer sheath. According to the testing requirements, the bidirectional lead screw 203 is further adjusted by the drive motor 202 to make the upper pressure plate 301 and the lower pressure plate 302 rise and fall synchronously along the guide rail 206. The positioning block ensures smooth lifting and falling until the target testing height is reached and then the machine stops. The medium coating device 307 is started. The built-in sprayer delivers the testing medium to the spray gun through the paint supply pipeline. The spray gun sprays the medium evenly onto the cable surface through the medium injection hole 306 of the upper pressure plate. The coating amount is precisely controlled by the sprayer. The cable performance sensor at the bottom of the lower pressure plate 302 directly contacts the cable surface through the sensor exposure window 309, collecting reliability parameters such as cable insulation performance and corrosion resistance in real time. During the test, the adaptive clamp keeps the cable stable to avoid positional deviation affecting the data. After the test, the drive motor 202 rotates in reverse, driving the upper pressure plate 301 to rise, releasing the cable, and the cable can be removed. If it is necessary to continuously test cables of different specifications, there is no need to change the clamp; just repeat the above steps.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A cable reliability testing device, characterized in that: The cable reliability testing device includes two symmetrically arranged support frame components, a synchronous lifting mechanism (2), and a cable testing module (3). The support frame assembly includes a mounting plate (1) and a fixing plate (4). The two mounting plates (1) are detachably connected to the outer side wall of the synchronous lifting mechanism and the fixing plate (4) to form a two-sided support structure of the device. The synchronous lifting mechanism (2) is installed on the outer wall of the inner cavity of one of the mounting plates (1). One end of the cable test module (3) is slidably connected to the synchronous lifting mechanism (2), and the other end is slidably connected to the fixed plate (4) to realize position adjustment along the height direction of the device. The cable testing module (3) includes an upper pressure plate (301), a lower pressure plate (302), a dielectric coating device (307), a cable performance sensor (308), and an adaptive clamp. The upper pressure plate (301) and the lower pressure plate (302) are parallel and opposite to each other, and both are slidably assembled between the synchronous lifting mechanism and the fixed plate (4). The adaptive clamp includes a spring (305), a telescopic rod (304), and a clamping plate (303). The upper pressure plate (301) and the lower pressure plate (302) are provided with arc-shaped grooves on their opposite inner sides. The two ends of the spring (305) are respectively fixed to the two ends of the inner sidewall of the arc-shaped groove. The clamping plate (303) is fixedly connected to the top of the spring (305). One end of the telescopic rod (304) is fixedly connected to the middle of the lower end of the clamping plate (303), and the other end is fixed to the bottom of the arc-shaped groove. The medium coating device (307) is fixed to the top of the upper pressure plate (301). The upper end face of the upper pressure plate (301) is provided with a medium injection hole (306) corresponding to the medium coating device (307). The output end of the medium coating device (307) can extend into the arc groove through the medium injection hole (306). The cable performance sensor (308) is fixed to the bottom of the lower pressure plate (302) and corresponds to the clamp (303) on the lower pressure plate (302), and is used to detect the reliability parameters of the cable.

2. The cable reliability testing device as described in claim 1, characterized in that: The synchronous lifting mechanism (2) includes a support base (201), a drive motor (202), a bidirectional lead screw (203), a bearing ring (204), and a slider (205). The support base (201) is fixed to the outer wall of the mounting plate (1), the drive motor (202) is fixed to the top of the support base (201), and a groove is provided on the middle surface of the support base (201). The bidirectional lead screw (203) is arranged along the length of the groove, one end of which is fixedly connected to the output end of the drive motor (202), and the other end is rotatably connected to the bearing ring (204). The bearing ring (204) is fixed to the end of the groove. There are two sliders (205), which are respectively meshed and connected to the two ends of the outer wall of the bidirectional lead screw (203). The outer ends of the two sliders (205) are fixedly connected to the outer walls of the upper pressure plate (301) and the lower pressure plate (302) to realize the synchronous lifting adjustment of the upper pressure plate (301) and the lower pressure plate (302).

3. The cable reliability testing device as described in claim 2, characterized in that: The support base (201) and the fixed plate (4) have the same structure. Both of them have guide rails (206) on their inner sides. The guide rails (206) extend along the height direction of the support base (201) and the fixed plate (4) and are symmetrically distributed. The inner cavity of the guide rails (206) is slidably connected to a positioning block. The outer wall of the positioning block is fixedly connected to the ends of the upper pressure plate (301) and the lower pressure plate (302) respectively, forming a guide structure for the upper pressure plate (301) and the lower pressure plate (302) to slide.

4. The cable reliability testing device as described in claim 1, characterized in that: The bottom surface of the lower pressure plate (302) is provided with a sensor exposure window (309). The sensor exposure window (309) passes through the clamping plate (303) along the length direction of the lower pressure plate (302). The cable performance sensor (308) is fixed at the bottom of the sensor exposure window (309), and its detection end can contact the cable surface through the sensor exposure window (309).

5. The cable reliability testing device as described in claim 1, characterized in that: The medium coating device (307) includes a built-in sprayer, spray gun and paint supply line. One end of the paint supply line is connected to the output end of the sprayer and the other end is connected to the input end of the spray gun. The output end of the spray gun corresponds to the medium injection hole (306) and can spray the detection medium onto the surface of the cable in the arc groove.

6. The cable reliability testing device as described in claim 1, characterized in that: The clamp (303) is semi-circular in shape, its inner wall is adapted to the outer circular surface of the cable, and the outer wall of the clamp (303) is a smooth surface.

7. The cable reliability testing device as described in claim 2, characterized in that: The slider (205) is connected to the upper pressure plate (301) and the lower pressure plate (302) by bolt fixing, and the inner wall of the slider (205) is provided with an internal thread that is compatible with the bidirectional lead screw (203) to ensure the stability of the meshing transmission.

Images