Supporting device for high-voltage cable experiment

Abstract

The utility model relates to the technical field of power cables, and discloses a support device for a high-voltage cable experiment, which comprises a centering clamping part and a test bench, and is characterized in that the centering clamping part comprises a support frame, a driving unit, a linkage unit and a plurality of groups of clamping arms; the clamping arms are slidably connected to the supporting frame in the radial direction of the supporting frame, one of the multiple sets of clamping arms is a driving clamping arm, and the other sets of clamping arms are driven clamping arms. The driving unit is used for driving the driving clamping arm to move linearly, and the linkage unit is used for transmitting power of the driving clamping arm to all the driven clamping arms, so that all the clamping arms move synchronously. According to the utility model, the centering clamping part is arranged to ensure that the circle center of the cable is at a preset height after the cable is fixed, so that the subsequent performance experiments of the cable are more convenient, the debugging time for the subsequent experiments is greatly reduced, and the experiment efficiency is improved; and by arranging the linkage unit, synchronous driving of all the clamping arms by a single driving source is achieved, the number of power sources is reduced, and the size of the device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically, a support device for high-voltage cable testing. Background Technology

[0002] A cable is an electrical transmission device composed of conductive materials (usually copper or aluminum) and insulating materials. It transmits electricity and signals by carrying current. The basic structure of a cable typically includes a conductor, an insulation layer, a sheath, and some special-purpose outer protective layers. Cables have a wide range of applications, covering multiple fields such as power, communications, and industry. To ensure that the performance of cables meets standards, manufacturers usually conduct performance tests on the cables before they leave the factory. Performance tests include electrical performance tests, mechanical performance tests, environmental adaptability tests, fire safety tests, aging tests, chemical stability tests, and electromagnetic compatibility (EMC) tests. To ensure accurate test data, the cables to be tested usually need to be fixed on a test bench to ensure that the cables do not move. Since the diameter of the cables tested is different each time, the height of the cables cannot be uniform after the existing support device is used to fix the cables. Therefore, the height of the support device needs to be frequently adjusted, and thus the height of the cables needs to be adjusted, which is cumbersome and has low experimental efficiency. To solve the above problems, this utility model provides a support device that can uniformly fix cables of different specifications at the same height, thereby facilitating subsequent experiments and improving experimental efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a support device for high-voltage cable testing, which solves the problem that existing support devices, when fixing cables of different specifications, have inconsistent cable heights, leading to frequent adjustments and low efficiency in subsequent experiments.

[0004] This utility model is achieved through the following technical solution: a support device for high-voltage cable testing, comprising:

[0005] The centering clamping part, used to clamp and support the cable, includes a support frame, a drive unit, a linkage unit, and multiple sets of clamping arms. The clamping arms are slidably connected to the support frame radially. The multiple sets of clamping arms are equidistantly distributed, and one set of clamping arms is active, while the rest are driven clamping arms. The drive unit is used to drive the active clamping arm to move linearly, and the linkage unit is used to transmit the power of the active clamping arm to all the driven clamping arms, so that all clamping arms move synchronously.

[0006] The test bench is used for installing the centering clamping part.

[0007] To better realize this utility model, the support frame further includes an outer support and an inner support, the inner support being mounted on the outer support, and the outer support being mounted on the test bench; the clamping arm includes a sliding rod and a clamping head, the clamping head being mounted on the end of the sliding rod, and the sliding rod being slidably connected to the support frame; the linkage unit includes an arc-shaped rack, a linear rack, and a gear, the linear rack being mounted on the sliding rod, the arc-shaped rack being slidably connected to the outer support, and the gear being rotatably connected to the outer support, the gear meshing with the linear rack and the arc-shaped rack respectively.

[0008] To better realize this utility model, the slide bar further includes a first slide bar unit and a second slide bar unit, the second slide bar unit being slidably connected to the first slide bar unit, and a spring being provided between the first slide bar unit and the second slide bar unit.

[0009] To better realize this utility model, the clamping head further includes an insulating head made of ceramic, and an anti-slip pad made of rubber is installed on the insulating head.

[0010] To better realize this utility model, the insulating head is further provided with a mounting hole, and the anti-slip pad is embedded in the mounting hole.

[0011] To better realize this utility model, the support frame is further provided in a ring shape with an open top, that is, the tops of both the outer and inner supports are open.

[0012] To better realize this utility model, the driving unit further includes a linear driving source, which is mounted on the test bench. The output end of the linear driving source is connected to the slide bar. The linear driving source is any one of a linear motor, a hydraulic cylinder, or a pneumatic cylinder.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] (1) By setting a centering clamping part, this utility model ensures that the center of the cable is at a preset height after it is fixed, which makes it more convenient to conduct various performance tests on the cable in the future, greatly reduces the time spent on debugging in the subsequent tests, and improves the efficiency of the test.

[0015] (2) By setting up a linkage unit, this utility model realizes the synchronous driving of all clamping arms by a single drive source, which reduces the power source setting and reduces the size of the device;

[0016] (3) By setting the top of the support frame to be open-loop, this utility model can save a lot of time and reduce the difficulty of operation in multiple scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0019] Figure 3 This is a cross-sectional view of the centering and clamping part.

[0020] Figure 4 This is a schematic diagram of the centering and clamping mechanism.

[0021] Figure 5 This is a schematic diagram of the linkage unit structure.

[0022] Wherein: 101-Test bench; 102-Outer support; 103-Inner support; 104-First slide bar unit; 105-Linear drive source; 106-Second slide bar unit; 107-Insulating head; 108-Arc rack; 109-Linear rack; 110-Gear; 111-Anti-slip pad; 112-Spring; 113-Mounting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] This embodiment provides a support device for high-voltage cable testing, specifically as follows: Figures 1-4 As shown, it includes:

[0027] The centering clamping part, used to clamp and support the cable, includes a support frame, a drive unit, a linkage unit, and multiple sets of clamping arms. The clamping arms are slidably connected to the support frame radially. The multiple sets of clamping arms are equidistantly distributed, and one set of clamping arms is active, while the rest are driven clamping arms. The drive unit is used to drive the active clamping arm to move linearly, and the linkage unit is used to transmit the power of the active clamping arm to all the driven clamping arms, so that all clamping arms move synchronously.

[0028] Test bench 101 is used for mounting the centering clamping part.

[0029] In use, the operator inserts the cable between multiple clamping arms. Then, the drive unit drives the active clamping arm to move closer to the cable. At the same time, the linkage unit synchronously drives the driven clamping arm to move closer to the cable. Since all clamping arms move the same amount, the cable is centered and clamped, ensuring that the center of the cable is at a preset height after it is fixed. This design makes it more convenient to conduct electrical performance, mechanical performance, environmental adaptability, and fire safety tests on the cable, significantly reducing the time spent on debugging during subsequent tests and improving experimental efficiency.

[0030] Example 2:

[0031] This embodiment further expands the centering clamping part based on the above embodiment, specifically as follows: Figures 3-5 As shown, the support frame includes an outer support 102 and an inner support 103. The inner support 103 is mounted on the outer support 102, and the outer support 102 is mounted on the test bench 101. The clamping arm includes a sliding rod and a clamping head. The clamping head is mounted on the end of the sliding rod, and the sliding rod is slidably connected to the support frame. The linkage unit includes an arc-shaped rack 108, a linear rack 109, and a gear 110. The linear rack 109 is mounted on the sliding rod, the arc-shaped rack 108 is slidably connected to the outer support 102, and the gear 110 is rotatably connected to the outer support 102. The gear 110 meshes with the linear rack 109 and the arc-shaped rack 108, respectively.

[0032] The drive unit moves the sliding rod of the active gripping arm, which in turn moves the corresponding linear rack 109. This linear rack 109 then drives the gear 110 it meshes with to rotate. The rotation of the gear 110 drives the arc-shaped rack 108 to rotate. The rotation of the arc-shaped rack 108 drives the gears 110 at all the driven gripping arms. At this time, the linear racks 109 at the driven gripping arms drive the linear racks 109 on those arms, thus moving the sliding rod of the driven gripping arm and ultimately causing the gripping head to clamp the cable. This achieves synchronous drive of all gripping arms from a single drive source, reducing the need for multiple power sources.

[0033] Preferably, the slide bar includes a first slide bar unit 104 and a second slide bar unit 106, with the second slide bar unit 106 slidably connected to the first slide bar unit 104. A spring 112 is disposed between the first slide bar unit 104 and the second slide bar unit 106. When the clamping head clamps the cable, the drive source further drives the slide bar to move, at which point the spring 112 is compressed. After the drive source stops, the pressure of the clamping head on the cable is the same as the elastic force of the spring 112. The spring 112 provides a relatively constant pressure to the cable, thereby preventing the clamping head from rigidly squeezing the cable and causing damage.

[0034] Preferably, the clamping head includes an insulating head 107 made of ceramic, and an anti-slip pad 111 made of rubber is installed on the insulating head 107. The insulating head 107 is used to clamp the cable to prevent leakage. The hollow design reduces weight, saves materials, improves thermal expansion adaptability, enhances cable stability, and improves heat dissipation. The anti-slip pad 111 prevents slippage between the insulating head 107 and the cable, increasing friction.

[0035] Furthermore, the insulating head 107 is provided with a mounting hole 113, and the anti-slip pad 111 is embedded in the mounting hole 113. Embedding the anti-slip pad 111 in the mounting hole 113 is to prevent the anti-slip pad 111 from not adhering firmly to the insulating head 107.

[0036] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0037] Example 3:

[0038] This embodiment further expands the support frame based on the above embodiment, specifically as follows: Figure 4 As shown, the support frame is ring-shaped with an open top, meaning that both the outer support 102 and the inner support 103 have open tops. This open-loop design allows the cable to be lowered directly from the open loop when placed into multiple clamping arms, instead of finding the cable end for insertion. For experiments involving specific sections of the cable, this design significantly saves time and reduces operational difficulty.

[0039] In another specific embodiment, such as Figure 3 As shown, the drive unit includes a linear drive source 105, which is mounted on the test bench 101. The output end of the linear drive source 105 is connected to the slide bar. The linear drive source 105 can be any one of a linear motor, a hydraulic cylinder, or a pneumatic cylinder.

[0040] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A support device for high-voltage cable testing, characterized in that... ,include: The centering clamping part, used to clamp and support the cable, includes a support frame, a drive unit, a linkage unit, and multiple sets of clamping arms. The clamping arms are slidably connected to the support frame radially. The multiple sets of clamping arms are equidistantly distributed, and one set of clamping arms is active, while the rest are driven clamping arms. The drive unit is used to drive the active clamping arm to move linearly, and the linkage unit is used to transmit the power of the active clamping arm to all the driven clamping arms, so that all clamping arms move synchronously. Test bench (101) is used for mounting the centering clamping part.

2. The high-voltage cable test support device according to claim 1, characterized in that: The support frame includes an outer support (102) and an inner support (103). The inner support (103) is mounted on the outer support (102), and the outer support (102) is mounted on the test bench (101). The clamping arm includes a sliding rod and a clamping head. The clamping head is mounted on the end of the sliding rod, and the sliding rod is slidably connected to the support frame. The linkage unit includes an arc rack (108), a linear rack (109), and a gear (110). The linear rack (109) is mounted on the sliding rod, the arc rack (108) is slidably connected to the outer support (102), and the gear (110) is rotatably connected to the outer support (102). The gear (110) meshes with the linear rack (109) and the arc rack (108) respectively.

3. The high-voltage cable test support device according to claim 2, characterized in that: The slide bar includes a first slide bar unit (104) and a second slide bar unit (106). The second slide bar unit (106) is slidably connected to the first slide bar unit (104). A spring (112) is provided between the first slide bar unit (104) and the second slide bar unit (106).

4. The high-voltage cable testing support device according to claim 2, characterized in that: The clamping head includes an insulating head (107) made of ceramic, and an anti-slip pad (111) made of rubber is installed on the insulating head (107).

5. A support device for high-voltage cable testing according to claim 4, characterized in that: The insulating head (107) is provided with a mounting hole (113), and the anti-slip pad (111) is embedded in the mounting hole (113).

6. A support device for high-voltage cable testing according to any one of claims 2-5, characterized in that: The support frame is ring-shaped with an open top, meaning that the tops of both the outer support (102) and the inner support (103) are open.

7. A support device for high-voltage cable testing according to any one of claims 2-5, characterized in that: The drive unit includes a linear drive source (105), which is mounted on the test bench (101). The output end of the linear drive source (105) is connected to the slide bar. The linear drive source (105) can be any one of a linear motor, a hydraulic cylinder, or a pneumatic cylinder.

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