A withstand voltage tester for electric wire cable

Abstract

The utility model relates to wire and cable technical field, concretely relates to a kind of withstand voltage tester for wire and cable, including box, the box inside is provided with the clamping mechanism for the wire and cable clamping limit and the testing mechanism for carrying out withstand voltage test to wire and cable, the clamping mechanism includes clamping plate and flexible insulation pad, the clamping plate is installed in the box interior, the flexible insulation pad is fixedly connected in the clamping plate inner wall surface, move clamping plate by motor drive bidirectional screw rod, can flexibly adjust clamping plate spacing, adapt the clamping demand of different diameter cable;No. 1 electric push rod adjusts the height of guide wheel, ensures that different diameter cable transmission is stable;No. 2 electric push rod controls the height and strength of pressing plate, avoids the instability or damage caused by cable diameter difference, the flexible insulation pad of clamping plate inner wall and rubber pad on placement platform and pressing plate, further improve clamping stability and cable protection.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, and in particular to a withstand voltage tester for wires and cables. Background Technology

[0002] In the production and quality inspection of wires and cables, withstand voltage testing is a core process to ensure the insulation performance and safety of products. Most mainstream withstand voltage testers used in factories adopt an integrated fixed structure design, which makes the equipment bulky and heavy. It usually requires forklifts or multiple people to move it, making it difficult to flexibly adapt to the testing needs of different workstations on the production line. This leads to increased material handling costs and reduced efficiency in the testing process. Moreover, the contact between the test electrodes and the cable is mostly local point contact or line contact. Small insulation defects on the cable surface are easily missed due to insufficient contact, resulting in missed detections and creating safety hazards for subsequent product use.

[0003] For example, a withstand voltage tester for wires and cables, with patent publication number "CN208297663U", utilizes a combination of casters and adjustable support feet at the bottom of the casing. This allows for flexible switching between mobile and stationary states. Pushing the handle moves the device to the target workstation via the casters, and activating the hydraulic pump lowers the support feet to support the casing, thus securing the device. This effectively solves the problem of inconvenient movement of traditional testers. Furthermore, the patent employs a design combining an arc-shaped support plate and an arc-shaped pressure plate. Lower and upper conductive cotton are respectively placed on the surfaces of the support plate and pressure plate, and the cable is positioned using limiting holes in the limiting seat. This ensures that when the pressure plate is pressed down, the conductive cotton fully adheres to the cable surface, increasing the contact area between the test electrodes and the cable and significantly reducing the probability of missed detections.

[0004] However, the limiting hole diameter of the limiting seat in the aforementioned patent is a fixed design. When testing cables with a diameter smaller than the limiting hole diameter, the cables are prone to radial displacement within the limiting hole, causing the pressure plate and conductive cotton to be unable to accurately align the center of the cable, resulting in uneven contact. For cables with a diameter larger than the limiting hole diameter, they cannot be smoothly passed through the limiting hole, and a limiting seat of the corresponding specification must be replaced to continue testing. This not only increases the cost of accessories but also frequently interrupts the testing process, reducing the overall testing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a withstand voltage tester for wires and cables, which solves the problem in the aforementioned patent where the limiting hole diameter of the limiting seat is fixed. When testing cables with a diameter smaller than the limiting hole diameter, the cables tend to radially shift within the limiting hole, causing the pressure plate and conductive cotton to fail to accurately align with the cable center, resulting in uneven contact. For cables with a diameter larger than the limiting hole diameter, they cannot pass smoothly through the limiting hole, requiring the replacement of the limiting seat with the corresponding specification to continue testing. This not only increases the cost of accessories but also frequently interrupts the testing process, reducing overall testing efficiency.

[0006] To achieve the above objectives, this utility model provides a withstand voltage tester for wires and cables, including a housing. Inside the housing, there is a clamping mechanism for clamping and limiting the wires and cables and a testing mechanism for performing withstand voltage tests on the wires and cables. The clamping mechanism includes a clamping plate and a flexible insulating pad. The clamping plate is installed inside the housing, and the flexible insulating pad is fixedly connected to the inner wall surface of the clamping plate.

[0007] The inner wall of the box is rotatably connected to both sides by a bidirectional threaded rod, and a slider is threadedly connected to the surface of the bidirectional threaded rod. The slider is slidably connected to the surface of the inner wall of the box.

[0008] The slider is fixedly connected to one side of a connecting rod, the clamp is fixedly connected to one end of the connecting rod, and the housing is fixedly connected to one side of a mounting box.

[0009] The mounting box has pulleys rotatably connected to both sides of its inner wall. The pulleys are fixedly connected to the bidirectional threaded rod. A synchronous belt meshes with the outer circumferential surface of the pulleys. A motor is fixedly connected to one side of the mounting box, and the motor output shaft is fixedly connected to the pulley.

[0010] A glass plate is fixedly connected to the other side of the box, a mounting column is fixedly connected to the bottom of the inner wall of the box, guide wheels are rotatably connected to both sides of the inner wall of the mounting column, and a first electric push rod is fixedly connected to the top of the inner wall of the box. There are multiple mounting columns, and another mounting column is fixedly connected to one end of the first electric push rod.

[0011] The bottom of the inner wall of the box is fixedly connected to a placement platform, and the top of the inner wall of the box is fixedly connected to a second electric push rod. One end of the second electric push rod is fixedly connected to a pressure plate, and the lower surface of the pressure plate and the upper surface of the placement platform are both fixedly connected to rubber pads.

[0012] 1. In this utility model, the clamping plates are moved by a bidirectional threaded rod driven by a motor, and the clamping plate spacing can be flexibly adjusted to meet the clamping requirements of cables of different diameters; the first electric push rod adjusts the height of the guide wheel to ensure smooth transmission of cables of different diameters.

[0013] 2. In this invention, the flexible insulating pad on the inner wall of the clamping plate and the rubber pads on the placement platform and pressure plate further enhance clamping stability and cable protection. The overall structure effectively solves the problem that existing equipment is difficult to adapt to cables of different diameters, enabling efficient and accurate testing of cables of various specifications. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the main appearance structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the testing mechanism structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the bidirectional threaded rod and its connection structure according to this utility model.

[0019] Figure 5 This is a schematic diagram of the mounting box and its connection structure of this utility model.

[0020] In the diagram: 1. Box body; 2. Clamping mechanism; 201. Bidirectional threaded rod; 202. Slider; 203. Connecting rod; 204. Clamping plate; 205. Flexible insulating pad; 206. Mounting box; 207. Pulley; 208. Synchronous belt; 209. Motor; 3. Testing mechanism; 301. Glass plate; 302. Mounting column; 303. Guide wheel; 304. Electric push rod No. 1; 305. Placement platform; 306. Electric push rod No. 2; 307. Pressure plate; 308. Rubber pad. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figures 1-5A withstand voltage tester for wires and cables includes a housing 1, which provides a stable installation and working platform for the entire tester, ensuring the orderly operation of the internal mechanisms. Inside the housing 1 are a clamping mechanism 2 for holding and limiting the wires and cables, and a testing mechanism 3 for performing withstand voltage tests on the wires and cables. The clamping mechanism 2 securely holds the wires and cables, preventing cable displacement during testing and ensuring test accuracy. The testing mechanism 3 accurately performs withstand voltage performance testing on the wires and cables. The clamping mechanism 2 includes a clamping plate 204 and a flexible insulating pad 205. The clamping plate 204, as a direct clamping component, contacts the surface of the wires and cables to achieve clamping. The flexible insulating pad 205 is fixedly connected to the inner wall surface of the clamping plate 204, increasing friction with the cable and improving clamping stability. It also prevents damage caused by direct hard contact between the clamping plate 204 and the cable, while providing insulation to ensure test safety. The inner walls of the housing 1 are rotatably connected to two sides of a bidirectional threaded rod 201. The bidirectional threaded rod 201 can drive the two side components to move in opposite directions by rotation, providing power for the adjustment of the clamping mechanism 2. A slider 202 is threadedly connected to the surface of the bidirectional threaded rod 201. The slider 202 can move along its axial direction under the rotation of the bidirectional threaded rod 201. The slider 202 is slidably connected to the inner wall surface of the housing 1. The inner wall of the housing 1 guides and limits the slider 202, preventing the slider 202 from rotating synchronously with the bidirectional threaded rod 201, and ensuring the stable translation of the slider 202. A connecting rod 203 is fixedly connected to one side of the slider 202. The connecting rod 203 serves as a connection and force transmission mechanism, converting the movement of the slider 202 into the movement of the clamping plate 204. The clamping plate 204 is fixedly connected to one end of the connecting rod 203, so that when the slider 202 moves, it can drive the clamping plate 204 to move synchronously, thereby realizing the clamping and adjustment of wires and cables of different sizes. A mounting box 206 is fixedly connected to one side of the housing 1. The mounting box 206 provides protection and installation space for the internal transmission components, avoiding interference from external factors in the transmission process. Pullers 207 are rotatably connected to both sides of the inner wall of the mounting box 206. The pulleys 207 are fixedly connected to the bidirectional threaded rod 201, so that when the pulleys 207 rotate, they can drive the bidirectional threaded rod 201 to rotate synchronously. A synchronous belt 208 is engaged with the outer circumferential surface of the pulleys 207. The synchronous belt 208 can realize the synchronous rotation of the two pulleys 207, ensuring that the speed of the bidirectional threaded rods 201 on both sides is the same, thereby ensuring the synchronous movement of the slider 202. A motor 209 is fixedly connected to one side of the mounting box 206. The motor 209 provides the power source for the entire transmission system. The output shaft of the motor 209 is fixedly connected to the pulley 207. When the motor 209 is working, it can directly drive the pulley 207 connected to it to rotate, and then drive the pulley 207 on the other side to rotate through the synchronous belt 208.

[0023] Please see Figures 1-3Based on the first embodiment, in this embodiment, a glass plate 301 is fixedly connected to the other side of the housing 1. The glass plate 301 is made of transparent material, which makes it convenient for staff to observe the status of the internal cables during the test and to detect abnormalities in a timely manner. A mounting column 302 is fixedly connected to the bottom of the inner wall of the housing 1. The mounting column 302 provides stable mounting support for the guide wheel 303. The guide wheel 303 is rotatably connected to both sides of the inner wall of the mounting column 302. The guide wheel 303 can guide the wires and cables, which facilitates the movement and positioning of the cables during the test. A first electric push rod 304 is fixedly connected to the top of the inner wall of the housing 1. The first electric push rod 304 can move the connected components up and down by telescoping, so as to realize position adjustment. There are multiple mounting columns 302. Another mounting column 302 is fixedly connected to one end of the first electric push rod 304, so that when the first electric push rod 304 telescops, it can drive the mounting column 302 and the corresponding guide wheel 303 to move up and down. In this way, the height of the guide wheel 303 can be adjusted according to the size of the cable to ensure the guiding effect. A placement platform 305 is fixedly connected to the bottom of the inner wall of the enclosure 1. The placement platform 305 provides a support surface for placing the wires and cables, ensuring that the cables are in a stable state during testing. A second electric push rod 306 is fixedly connected to the top of the inner wall of the enclosure 1. The second electric push rod 306 can drive the pressure plate 307 to move up and down through extension and retraction. One end of the second electric push rod 306 is fixedly connected to the pressure plate 307. The pressure plate 307 can move towards the placement platform 305 under the action of the second electric push rod 306, and work with the placement platform 305 to further fix the wires and cables. Rubber pads 308 are fixedly connected to the lower surface of the pressure plate 307 and the upper surface of the placement platform 305. The rubber pads 308 have a certain degree of elasticity and insulation, which can not only enhance the fixing effect of the cable, but also prevent the pressure plate 307 and the placement platform 305 from damaging the cable, while ensuring insulation safety during the testing process.

[0024] Working Principle: When using this withstand voltage tester for wires and cables, first, place the wire or cable to be tested into the feed ports on both sides of the housing 1, ensuring one end of the cable is placed on the placement platform 305. Adjust the cable position to ensure it is horizontal and the portion to be tested is within the detection range of the testing mechanism 3. Then, start the motor 209. Set the rotation direction and speed of the motor 209 via the control panel. The output shaft of the motor 209 drives the connected pulley 207 to rotate. Under the meshing transmission of the synchronous belt 208, the other pulley 207 rotates synchronously, thereby driving the two bidirectional threaded rods 201 on both sides to rotate synchronously. When the bidirectional threaded rods 201 rotate, the sliders 202 connected to the threads on their surfaces move towards each other along the axial direction of the bidirectional threaded rods 201 under the guiding and limiting action of the sliding grooves on the inner wall of the housing 1. The sliders 202 drive the clamping plates 204 to move synchronously towards each other via the connecting rod 203. Workers monitor the movement of the clamping plate 204 in real time by observing the glass plate 301. When the flexible insulating pad 205 on the inner wall of the clamping plate 204 is in close contact with the surface of the wire and cable, and can firmly clamp the cable without significant wobbling, the motor 209 is stopped via the control panel. At this point, the clamping mechanism 2 has completed the initial clamping and limiting of the cable. Based on the diameter of the wire and cable to be tested, the first electric push rod 304 is activated. The extension / retraction amount of the first electric push rod 304 is set via the control panel. The extension / retraction end of the first electric push rod 304 drives the connected mounting column 302 and guide wheel 303 to move up and down, adjusting the height of the guide wheel 303 so that its surface is in close contact with the cable surface, ensuring that the guide wheel 303 can provide stable guidance for the cable and prevent cable deviation during subsequent testing. Once the guide wheel 303 is adjusted to the appropriate height, the first electric push rod 304 is stopped. Next, start the second electric push rod 306. Set the extension and retraction amount of the second electric push rod 306 through the control panel. The extension and retraction end of the second electric push rod 306 drives the pressure plate 307 to move downward. The rubber pad 308 on the lower surface of the pressure plate 307 gradually approaches the cable surface and presses down on the cable to perform a withstand voltage test on the cable.

[0025] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application are still within the scope of this application. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0026] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A withstand voltage tester for wires and cables, comprising a housing, characterized in that: The box is equipped with a clamping mechanism for clamping and limiting the wires and cables and a testing mechanism for performing withstand voltage tests on the wires and cables. The clamping mechanism includes a clamping plate and a flexible insulating pad. The clamping plate is installed inside the box, and the flexible insulating pad is fixedly connected to the inner wall surface of the clamping plate.

2. The withstand voltage tester for wires and cables according to claim 1, characterized in that: The inner wall of the box is rotatably connected to both sides by a bidirectional threaded rod, and a slider is threadedly connected to the surface of the bidirectional threaded rod. The slider is slidably connected to the surface of the inner wall of the box.

3. The withstand voltage tester for wires and cables according to claim 2, characterized in that: A connecting rod is fixedly connected to one side of the slider, the clamp is fixedly connected to one end of the connecting rod, and an installation box is fixedly connected to one side of the box.

4. A withstand voltage tester for wires and cables according to claim 3, characterized in that: The mounting box has pulleys rotatably connected to both sides of its inner wall. The pulleys are fixedly connected to the bidirectional threaded rod. A synchronous belt meshes with the outer circumferential surface of the pulleys. A motor is fixedly connected to one side of the mounting box, and the motor output shaft is fixedly connected to the pulley.

5. A withstand voltage tester for wires and cables according to claim 1, characterized in that: A glass plate is fixedly connected to the other side of the box, and a mounting column is fixedly connected to the bottom of the inner wall of the box. Guide wheels are rotatably connected to both sides of the inner wall of the mounting column. A first electric push rod is fixedly connected to the top of the inner wall of the box. There are multiple mounting columns, and another mounting column is fixedly connected to one end of the first electric push rod.

6. A withstand voltage tester for wires and cables according to claim 1, characterized in that: A placement platform is fixedly connected to the bottom of the inner wall of the box, and a second electric push rod is fixedly connected to the top of the inner wall of the box. A pressure plate is fixedly connected to one end of the second electric push rod, and rubber pads are fixedly connected to the lower surface of the pressure plate and the upper surface of the placement platform.

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