A cable shielding performance detection device

Abstract

The utility model discloses a cable shielding performance detection device belongs to cable detection technical field, aims at the problem that cannot detect cable shielding performance and cannot detect cable more comprehensive detection, including fixed base, the fixed base upper portion is provided with slide rail, the fixed base is slidably installed with limiting mechanism through the slide rail, the fixed base upper portion is provided with detection mechanism, the fixed base is limit installation with cable through limiting mechanism, the detection mechanism top is provided with positioning mechanism, be provided with mounting mechanism on the positioning mechanism, the mounting mechanism is fixedly connected on the fixed base upper portion, the utility model discloses the limiting mechanism that sets up, is convenient for the stable limiting operation of the cable of detection, in order to facilitate the stable detection work of cable of cooperation detection mechanism, can detect cable through detection mechanism simultaneously and can detect the shielding performance of cable.

Description

Technical Field

[0001] This utility model belongs to the field of cable testing technology, specifically relating to a cable shielding performance testing device. Background Technology

[0002] Cross-linked polyethylene (XLPE) insulated power cables are widely used due to their excellent electrical and mechanical properties. For medium-voltage power cables with rated voltages of 6kV to 30kV, the withstand voltage test before leaving the factory is an essential routine test. The withstand voltage test typically involves applying a certain voltage to the insulation under specific conditions and observing whether insulation breakdown occurs after a certain period of time to determine the cable's quality.

[0003] A prior art patent, CN222561654U, describes a cable performance testing device. This device includes a base, a fixed base, a movable base, and a clamping base movably positioned above the fixed base. A test motor is fixed on the base, and the output end of the test motor is connected to the clamping base via a first transmission mechanism. The output end of the test motor is also connected to the movable base via a second transmission mechanism. The fixed base has multiple lower arc-shaped fixing grooves, and the bottom of the clamping base has an upper arc-shaped fixing groove directly opposite the lower arc-shaped fixing grooves. The test motor drives the clamping base closer to or away from the fixed base via the first transmission mechanism, and the test motor drives the movable base closer to or away from the fixed base via the second transmission mechanism. A test component is mounted on the movable base. This device can automatically fix and release multiple cables, simplifying operation and improving testing efficiency. However, in practical use, it has the following shortcomings: In practice, it cannot test the cable shielding performance, reducing testing efficiency. Furthermore, it cannot perform comprehensive testing of the cable, thus reducing testing accuracy.

[0004] Therefore, a cable shielding performance testing device is needed to solve the problems of existing technologies that cannot test cable shielding performance and cannot perform comprehensive testing of the cable during testing. Utility Model Content

[0005] The purpose of this invention is to provide a cable shielding performance testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cable shielding performance testing device, comprising a fixed base, a slide rail on the upper part of the fixed base, a limiting mechanism slidably mounted on the fixed base via the slide rail, a testing mechanism on the upper part of the fixed base, a cable being limited and mounted on the fixed base via the limiting mechanism, the cable being tested by the testing mechanism, a positioning mechanism above the testing mechanism, an installation mechanism on the positioning mechanism, the installation mechanism being fixedly connected to the upper part of the fixed base, and the positioning mechanism being detachably mounted on the upper part of the fixed base via the installation mechanism.

[0007] It should be noted in the solution that the limiting mechanism is set on the left and right sides of the detection mechanism via slide rails.

[0008] It is further worth noting that the limiting mechanism includes a slide block, which is slidably disposed on a slide rail. A limiting plate is slidably installed inside the slide block. A pull rod is fixedly connected to the upper part of the limiting plate. The pull rod is slidably disposed on the slide block. Limiting rods are fixedly connected to the front and rear sides of the pull rod to the upper part of the limiting plate. The limiting rods are slidably disposed through the slide block. A first spring is sleeved on the outer side of the limiting rod. The first spring is disposed between the slide block and the limiting plate.

[0009] Furthermore, it should be noted that an arc-shaped groove for matching the cable is provided below the limiting plate, which is used to limit the cable within the slide.

[0010] In a preferred embodiment, the detection mechanism includes a detection seat, which is fixedly installed on the upper part of a fixed base. A detection plate is provided above the detection seat, and a detection module is installed inside the detection plate. A patch is provided between the detection seat and the detection plate. Fixed frames are fixedly connected to the left and right sides of the patch on the upper part of the fixed base. Limit blocks are slidably provided inside the fixed frames, and a second spring is fixedly installed on one side of the limit block inside the fixed frame.

[0011] In a preferred embodiment, multiple limiting blocks are provided on the upper part of the fixing base via a fixing frame. The multiple limiting blocks are arranged in pairs for clamping and limiting the cable. The second spring is connected between two limiting blocks.

[0012] In a preferred embodiment, the positioning mechanism includes a mounting frame, which is detachably connected to the fixed base via a mounting mechanism. A positioning rod is slidably mounted on the mounting frame, with its bottom end connected to a detection plate. A third spring is sleeved on the outer side of the positioning rod, located between the mounting frame and the detection plate. Guide rods are fixedly connected to the top of the detection plate on both sides of the positioning rod, and these guide rods slide through the mounting frame.

[0013] In a preferred embodiment, the mounting mechanism includes four positioning blocks, which are fixedly connected to the mounting base at the bottom corners of the mounting frame. Each positioning block has a mounting groove and a threaded rod is threadedly connected to it.

[0014] Compared with the prior art, the cable shielding performance testing device provided by this utility model has at least the following beneficial effects:

[0015] (1) By setting a limiting mechanism, it is easy to perform stable limiting operation on the cable to be tested, so as to cooperate with the testing mechanism to perform stable testing on the cable. At the same time, the testing mechanism can perform comprehensive testing on the cable and can detect the shielding performance of the cable, thereby improving the practicality and testing efficiency of the device.

[0016] (2) By using the positioning mechanism in conjunction with the installation mechanism, it is convenient and efficient to install and disassemble the cable to be tested. This not only improves the installation efficiency during cable testing, but also further improves the stability of cable testing, thereby improving the ease of use of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a frontal sectional view of the present invention.

[0019] Figure 3 This is a side view sectional view of the present invention.

[0020] Figure 4 This is a schematic diagram of the disassembled structure of this utility model;

[0021] Figure 5 This is a partial structural schematic diagram of the present invention.

[0022] In the diagram: 1. Fixed base; 101. Slide rail; 2. Limiting mechanism; 201. Slide seat; 202. Limiting plate; 203. Pull rod; 204. Limiting rod; 205. First spring; 3. Detection mechanism; 301. Detection seat; 302. Detection plate; 303. Detection module; 304. Patch; 305. Fixed frame; 306. Limiting block; 307. Second spring; 4. Positioning mechanism; 401. Mounting frame; 402. Positioning rod; 403. Third spring; 404. Guide rod; 5. Cable; 6. Mounting mechanism; 601. Positioning block; 602. Mounting groove; 603. Threaded rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Please see Figure 1-5 This utility model provides a cable shielding performance testing device, including a fixed base 1, a slide rail 101 on the upper part of the fixed base 1, a limiting mechanism 2 slidably mounted on the fixed base 1 via the slide rail 101, a testing mechanism 3 on the upper part of the fixed base 1, a cable 5 being limited and mounted on the fixed base 1 via the limiting mechanism 2, the cable 5 being tested by the testing mechanism 3, a positioning mechanism 4 above the testing mechanism 3, an installation mechanism 6 on the positioning mechanism 4, the installation mechanism 6 being fixedly connected to the upper part of the fixed base 1, and the positioning mechanism 4 being detachably mounted on the upper part of the fixed base 1 via the installation mechanism 6.

[0025] Further as Figure 1 , Figure 2 and Figure 4 As shown, it is worth noting that the limiting mechanism 2 is set on the left and right sides of the detection mechanism 3 via the slide rail 101. The limiting mechanism 2 includes a slide base 201, which is slidably set on the slide rail 101. A limiting plate 202 is slidably installed inside the slide base 201. A pull rod 203 is fixedly connected to the upper part of the limiting plate 202. The pull rod 203 is slidably set on the slide base 201. Limiting rods 204 are fixedly connected to the front and rear sides of the pull rod 203 to the upper part of the limiting plate 202. The limiting rod 204 is slidably mounted on the slide block 201. A first spring 205 is sleeved on the outside of the limiting rod 204. The first spring 205 is located between the slide block 201 and the limiting plate 202. An arc-shaped groove for matching the cable 5 is provided below the limiting plate 202 for limiting the cable 5 within the slide block 201. By pulling the pull rod 203, the limiting plate 202 slides upward, thus facilitating the limiting operation of the cable 5 through the limiting plate 202.

[0026] Further as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that the testing mechanism 3 includes a testing seat 301, which is fixedly installed on the upper part of the fixed base 1. A testing plate 302 is provided above the testing seat 301, and a testing module 303 is installed inside the testing plate 302. A patch 304 is provided between the testing seat 301 and the testing plate 302. Fixed frames 305 are fixedly connected to the upper part of the fixed base 1 on both sides of the patch 304. Limiting blocks 306 are slidably provided inside the fixed frames 305. A second spring 307 is fixedly installed on one side of the limiting blocks 306 inside the fixed frames 305. Multiple limiting blocks 306 are provided on the upper part of the fixed base 1 through the fixed frames 305. The multiple limiting blocks 306 are arranged in pairs for clamping and limiting the cable 5. The second spring 307 is connected between two limiting blocks 306.

[0027] In use, the patch 304 enables comprehensive testing of the cable 5, including its shielding performance, thereby improving the device's practicality. Furthermore, the elastic action of the limit block 306 and the second spring 307 facilitates clamping and limiting the cable 5, further enhancing the stability of the cable 5's installation and limiting, thus improving the accuracy of the cable 5's testing.

[0028] Specifically, the detection module 303 uses a high-frequency electric field coupling detection module (model TC-EFM01), which conforms to the standard GB / T12770-2020 Cables and Optical Fibers Part 2: Test Methods Section 1: Electrical Tests. It can detect the shielding effectiveness of cables in the 30MHz-1GHz frequency band (detection range 0-100dB, accuracy ±1dB). The module is fixed to the built-in slot of the detection plate 302 by two sets of M3 hexagonal bolts. The signal output terminal of the detection module 303 is connected to an external data acquisition unit (model NI-9234) through a shielded cable (model RG174). The acquisition unit is then connected to a computer, and the detection data is displayed in real time through dedicated software (such as a shielding effectiveness analysis program written in LabVIEW). When the shielding effectiveness is <60dB, an automatic alarm is triggered (determined as unqualified).

[0029] As can be seen from the above working process, the limiting mechanism 2 facilitates stable limiting of the cable 5 to be tested, so as to cooperate with the testing mechanism 3 to conduct stable testing of the cable 5. At the same time, the testing mechanism 3 can conduct comprehensive testing of the cable 5 and detect the shielding performance of the cable 5, thereby improving the practicality and testing efficiency of the device.

[0030] Further as Figure 2 , Figure 3 and Figure 4 As shown, it is worth noting that the positioning mechanism 4 includes a mounting frame 401, which is detachably connected to the fixed base 1 via a mounting mechanism 6. A positioning rod 402 is slidably mounted on the mounting frame 401, and the bottom end of the positioning rod 402 is connected to the detection plate 302. A third spring 403 is sleeved on the outside of the positioning rod 402, and the third spring 403 is located between the mounting frame 401 and the detection plate 302. Guide rods 404 are fixedly connected to the top of the detection plate 302 on both sides of the positioning rod 402, and the guide rods 404 slide through the mounting frame 401.

[0031] Further as Figure 1 , Figure 4 and Figure 5 As shown, it is worth noting that the installation mechanism 6 includes four positioning blocks 601. The four positioning blocks 601 are fixedly connected to the fixed base 1 at the bottom corner of the mounting frame 401. The positioning blocks 601 are provided with mounting grooves 602 and threaded rods 603 are threadedly connected to the positioning blocks 601.

[0032] In use, the mounting frame 401 is inserted into the mounting groove 602 and the threaded rod 603 is tightened, so that the threaded rod 603 limits the mounting frame 401. At the same time, the detection plate 302 slides in the mounting frame 401 through the positioning rod 402. Under the elastic force of the third spring 403, the detection plate 302 can position the cable 5.

[0033] This solution has the following working process: When this device is used, the fixed base 1 is fixedly installed, and the threaded rod 603 is turned to release the limiting position of the mounting frame 401, thus facilitating the removal of the mounting frame 401 from the fixed base 1. At this time, the detection cable 5 is installed on the upper part of the fixed base 1, and the cable 5 is installed and limited by the alignment patch 304 and the arc groove of the limiting plate 202. Furthermore, the elastic force of the first spring 205, combined with the pulling rod 203, causes the limiting plate 202 to slide upward, thus facilitating the limiting operation of the cable 5 through the limiting plate 202. This is achieved through the limiting block 306 and the second spring 307... The elastic effect facilitates clamping and limiting of cable 5, further improving the stability of cable 5 installation and limiting, thereby improving the detection accuracy of cable 5. When detecting cable 5, the mounting frame 401 is inserted into the mounting groove 602 and the threaded rod 603 is tightened, so that the threaded rod 603 limits the mounting frame 401. At the same time, the detection plate 302 slides in the mounting frame 401 through the positioning rod 402. Under the elastic force of the third spring 403, the detection plate 302 can position the cable 5. Furthermore, through the setting of the patch 304, a comprehensive detection of cable 5 can be performed, including testing its shielding performance, thereby improving the practicality of the device.

[0034] In summary: The limiting mechanism 2 facilitates stable limiting of the cable 5 under test, enabling stable testing of the cable 5 in conjunction with the testing mechanism 3. Simultaneously, the testing mechanism 3 allows for comprehensive testing of the cable 5, including its shielding performance, thereby improving the practicality and testing efficiency of the device. Furthermore, the positioning mechanism 4, in conjunction with the installation mechanism 6, facilitates convenient and efficient installation and removal of the cable 5, enhancing both installation efficiency and testing stability, thus improving the ease of use of the device.

Claims

1. A cable shielding performance testing device, comprising a mounting base (1), characterized in that: The fixed base (1) is provided with a slide rail (101) on its upper part. A limiting mechanism (2) is slidably installed on the fixed base (1) via the slide rail (101). A detection mechanism (3) is provided on the fixed base (1). A cable (5) is limited and installed on the fixed base (1) via the limiting mechanism (2). The cable (5) is detected by the detection mechanism (3). A positioning mechanism (4) is provided above the detection mechanism (3). An installation mechanism (6) is provided on the positioning mechanism (4). The installation mechanism (6) is fixedly connected to the upper part of the fixed base (1). The positioning mechanism (4) is detachably installed on the upper part of the fixed base (1) via the installation mechanism (6).

2. The cable shielding performance testing device according to claim 1, characterized in that: The limiting mechanism (2) is set on the left and right sides of the detection mechanism (3) via a slide rail (101).

3. The cable shielding performance testing device according to claim 1, characterized in that: The limiting mechanism (2) includes a slide block (201), which is slidably disposed on a slide rail (101). A limiting plate (202) is slidably installed inside the slide block (201). A pull rod (203) is fixedly connected to the upper part of the limiting plate (202). The pull rod (203) is slidably disposed on the slide block (201). A limiting rod (204) is fixedly connected to the front and rear sides of the pull rod (203) on the upper part of the limiting plate (202). The limiting rod (204) is slidably disposed through the slide block (201). A first spring (205) is sleeved on the outer side of the limiting rod (204). The first spring (205) is disposed between the slide block (201) and the limiting plate (202).

4. The cable shielding performance testing device according to claim 3, characterized in that: The limiting plate (202) is provided with an arc-shaped groove for matching the cable (5) below, which is used to limit the cable (5) in the slide (201).

5. The cable shielding performance testing device according to claim 1, characterized in that: The detection mechanism (3) includes a detection seat (301), which is fixedly installed on the upper part of the fixed seat (1). A detection plate (302) is provided above the detection seat (301). A detection module (303) is installed in the detection plate (302). A patch (304) is provided between the detection seat (301) and the detection plate (302). A fixed frame (305) is fixedly connected to the left and right sides of the patch (304) on the upper part of the fixed seat (1). A limit block (306) is slidably provided in the fixed frame (305). A second spring (307) is fixedly installed on one side of the limit block (306) in the fixed frame (305).

6. The cable shielding performance testing device according to claim 5, characterized in that: The limiting blocks (306) are provided on the upper part of the fixing base (1) through the fixing frame (305). The multiple limiting blocks (306) are arranged in pairs for clamping and limiting the cable (5). The second spring (307) is connected between two limiting blocks (306).

7. The cable shielding performance testing device according to claim 5, characterized in that: The positioning mechanism (4) includes a mounting frame (401), which is detachably connected to the fixed base (1) via a mounting mechanism (6). A positioning rod (402) is slidably mounted on the mounting frame (401). The bottom end of the positioning rod (402) is connected to the detection plate (302). A third spring (403) is sleeved on the outside of the positioning rod (402). The third spring (403) is located between the mounting frame (401) and the detection plate (302). Guide rods (404) are fixedly connected to the top of the detection plate (302) on both sides of the positioning rod (402). The guide rods (404) slide through the mounting frame (401).

8. The cable shielding performance testing device according to claim 7, characterized in that: The installation mechanism (6) includes four positioning blocks (601). The four positioning blocks (601) are fixedly connected to the fixing base (1) at the bottom corner of the mounting frame (401). The positioning blocks (601) are provided with mounting grooves (602) and threaded rods (603) are threadedly connected to the positioning blocks (601).

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