A DC ice-melting quick short-circuit device for a power transmission line

Abstract

The utility model discloses a kind of transmission line direct current ice-melting quick short-circuiting device, it is related to direct current ice-melting technical field, including vertical plate and two clamps, two The clamp is symmetrically arranged from top to bottom, the side close to two The clamp is all set with arc slot, the vertical plate is arranged at one side of two The clamp, and the side close to vertical plate of clamp is fixedly provided with connecting block, the inside of connecting block is fixedly sleeved with rotating rod, one end of rotating rod is rotatably connected with vertical plate, the front side of vertical plate is provided with fixed plate, the both ends of fixed plate are provided with the limiting mechanism of limiting the rotation of two The rotating rod, the inner side of arc slot is provided with arc clamp, the middle part of clamp is movably sleeved with slide bar, and one end of slide bar is fixedly connected with arc clamp. The utility model can be quickly short-circuited to line, can greatly improve construction efficiency, and it can be positioned to different diameter lines, with strong applicability.

Description

Technical Field

[0001] This utility model relates to the field of DC de-icing technology, specifically to a DC de-icing quick short-circuit device for power transmission lines. Background Technology

[0002] In winter, the cold weather easily causes power transmission lines to become covered with a thick layer of ice. This ice layer increases the weight of overhead lines and can cause resonance under wind conditions, severely impacting power towers and affecting the entire power supply system, threatening lives and the economy. Current ice-melting operations mostly use DC short-circuiting, requiring workers to hoist the short-circuit cables for high-altitude installation. The connection and disconnection of multiple short-circuit cables and overhead lines during short-circuiting are cumbersome, time-consuming, and can easily lead to worker fatigue. Furthermore, the working environment is generally cold and slippery, making safety difficult to guarantee. In addition, existing short-circuit devices often have limitations when limiting the movement of lines of different diameters, resulting in poor applicability. Utility Model Content

[0003] In view of the problems existing in the current DC de-icing fast short-circuit device for transmission lines, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide a DC de-icing fast short-circuit device for power transmission lines, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A DC de-icing rapid short-circuiting device for transmission lines includes a vertical plate and two clamping plates. The two clamping plates are symmetrically arranged from top to bottom. An arc-shaped groove is formed on the side of each clamping plate closest to the other. The vertical plate is located on one side of the two clamping plates. A connecting block is fixedly installed on the side of the clamping plate closest to the vertical plate. A rotating rod is fixedly sleeved inside the connecting block. One end of the rotating rod is rotatably connected to the vertical plate. A fixing plate is provided on the front side of the vertical plate. Limiting mechanisms that restrict the rotation of the two rotating rods are provided at both ends of the fixing plate. An arc-shaped clamping plate is provided inside the arc-shaped groove. A sliding rod is movably sleeved in the middle of the clamping plate. One end of the sliding rod is fixedly connected to the arc-shaped clamping plate. A U-shaped plate is provided on the side of the vertical plate away from the clamping plates. Pushing mechanisms that drive the two sliding rods are provided at both ends of the U-shaped plate. An adjusting mechanism that drives the U-shaped plate to move is provided on the side of the vertical plate closest to the U-shaped plate.

[0007] Preferably, the limiting mechanism includes a stop block and a plug rod. A first cavity is formed inside both ends of the fixing plate. The stop block is slidably disposed inside the first cavity. The plug rod is fixedly disposed on the side of the stop shell near the corresponding rotating rod. One end of the plug rod extends to the outside of the first cavity. A insertion hole is formed on the side wall of the rotating rod, and the plug rod is inserted into the insertion hole. A first spring is fixedly disposed on the side of the stop block away from the plug rod, and the other end of the first spring is fixedly connected to the inside of the first cavity.

[0008] Preferably, the pushing mechanism includes push blocks, and two push blocks are fixedly disposed at the end of the corresponding slide rod away from the arc-shaped clamping plate. The inner wall of the U-shaped plate near the push block is provided with an inclined surface, and the inclined surface of the U-shaped plate abuts against the inclined surface of the triangular block.

[0009] Preferably, the adjusting mechanism includes a threaded rod, a threaded hole is provided at the middle end of the U-shaped plate, the threaded rod is threaded into the inside of the threaded hole, and one end of the threaded rod is connected to the vertical plate.

[0010] Preferably, a second cavity is provided in the middle of the clamping plate, and a slider is slidably arranged inside the second cavity. The slider is fixedly sleeved with the middle end of the slider rod. A second spring is fixedly arranged on the side of the slider away from the arc-shaped clamping plate, and the other end of the second spring is fixedly connected to the inner wall of the second cavity.

[0011] Preferably, the sidewall of the U-shaped plate is provided with through holes on both sides of the threaded hole, and a limit rod is movably sleeved inside the through hole, with one end of the limit rod being fixedly connected to the vertical plate.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] 1. This utility model involves placing the cable inside two clamping plates, then closing the two clamping plates to clamp the cable. At this time, the first elastic force of the spring pushes the stop block to move, causing the plug to be inserted into the corresponding plug hole on the side wall of the rotating rod, thus completing the limitation of the two clamping plates and realizing the quick short-circuit limitation of the cable.

[0014] 2. In this utility model, by rotating the threaded rod, the U-shaped plate moves, and the two inclined surfaces of the U-shaped plate press against the inclined surfaces of the two triangular blocks, so that the sliding rods on both sides drive the arc-shaped clamps on both sides to move towards each other, thus limiting the movement of cables of different diameters. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the structure of a DC de-icing fast short-circuiting device for power transmission lines proposed in this utility model;

[0017] Figure 2 for Figure 1 Internal structure diagram;

[0018] Figure 3 for Figure 1 A three-dimensional view of the connection structure between the U-shaped plate and the push block.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Vertical plate; 2. Rotating rod; 3. Connecting block; 4. Clamping plate; 5. Arc-shaped clamping plate; 6. Slide rod; 7. Triangular block; 8. U-shaped plate; 9. Threaded rod; 10. Slide rod; 11. Fixed shell; 12. Insert rod; 13. Stop block; 14. First spring; 15. Sliding block; 16. Second spring. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] This utility model discloses a DC de-icing rapid short-circuit device for power transmission lines.

[0023] Reference Figure 1-3 A DC de-icing rapid short-circuiting device for transmission lines includes a vertical plate 1 and two clamping plates 4. The two clamping plates 4 are symmetrically arranged from top to bottom. An arc-shaped groove is formed on the side of each clamping plate 4 closest to it. The vertical plate 1 is positioned on one side of the two clamping plates 4. A connecting block 3 is fixedly installed on the side of the clamping plate 4 closest to the vertical plate 1. A rotating rod 2 is fixedly sleeved inside the connecting block 3, with one end of the rotating rod 2 rotatably connected to the vertical plate 1. A fixing plate 11 is provided on the front side of the vertical plate 1. Limiting mechanisms restricting the rotation of the two rotating rods 2 are provided at both ends of the fixing plate 11. An arc-shaped clamping plate 5 is provided inside the arc-shaped groove. A sliding rod 6 is movably sleeved in the middle of the clamping plate 4, with one end of the sliding rod 6 fixedly connected to the arc-shaped clamping plate 5. A U-shaped plate 8 is provided on the side of the vertical plate 1 furthest from the clamping plates 4. Pushing mechanisms for moving the two sliding rods 6 are provided at both ends of the U-shaped plate 8. An adjusting mechanism for moving the U-shaped plate 8 is provided on the side of the vertical plate 1 closest to the U-shaped plate 8.

[0024] Reference Figure 1-3The limiting mechanism includes a stop block 13 and a rod 12. Both ends of the fixing plate 11 have a first cavity. The stop block 13 is slidably disposed inside the first cavity. The rod 12 is fixedly disposed on the side of the stop block 13 near the corresponding rotating rod 2. One end of the rod 12 extends to the outside of the first cavity. The side wall of the rotating rod 2 has an insertion hole. The rod 12 is inserted into the insertion hole. A first spring 14 is fixedly disposed on the side of the stop block 13 away from the rod 12. The other end of the first spring 14 is fixedly connected to the inside of the first cavity.

[0025] Reference Figure 1-3 The pushing mechanism includes a triangular block 7. Two triangular blocks 7 are fixedly set at the end of the corresponding slide rod 6 away from the arc-shaped clamp 5. The inner wall of the U-shaped plate 8 near the triangular block 7 is provided with a slope. The slope of the U-shaped plate 8 abuts against the slope of the triangular block 7.

[0026] Reference Figure 1-3 The adjusting mechanism includes a threaded rod 9, a threaded hole is provided at the middle end of the U-shaped plate 8, the threaded rod 9 is threaded into the inside of the threaded hole, one end of the threaded rod 9 is rotatably connected to the vertical plate 1, and through holes are provided on the side wall of the U-shaped plate 8 on both sides of the threaded hole. A limit rod 10 is movably sleeved inside the through hole, and one end of the limit rod 10 is fixedly connected to the vertical plate 1.

[0027] Reference Figure 1-3 A second cavity is provided in the middle of the clamping plate 4. A slider 15 is slidably arranged inside the second cavity. The slider 15 is fixedly sleeved with the middle end of the slide rod 6. A second spring 16 is fixedly arranged on the side of the slider 15 away from the arc-shaped clamping plate 5. The other end of the second spring 16 is fixedly connected to the inner wall of the second cavity.

[0028] In this utility model, during use, first pull the plug rod 12 to compress the first spring 14 with the stop block 13 and exit the insertion hole of the rotating rod 2, thereby releasing the limit on the rotating rod 2. Then, rotate the two clamping plates 4 around the rotating rod 2 as the axis, place the transmission line to be shorted between the two arc-shaped grooves, and then rotate the clamping plates 4 in the opposite direction to close them, release the plug rod 12, and the first spring 14 resets to push the stop block 13 and the plug rod 12 to move. The plug rod 12 is inserted into the insertion hole of the rotating rod 2, completing the initial fixation of the clamping plates 4 and realizing the rapid positioning of the line.

[0029] Rotating the threaded rod 9, the U-shaped plate 8 cannot rotate due to the constraint of the limit rods 10 on both sides, and can only move horizontally along the limit rods 10. The inclined surfaces at both ends of the U-shaped plate 8 press against the corresponding triangular blocks 7, causing the triangular blocks 7 to drive the slide rod 6 to move towards the inside of the arc groove. The slide rod 6 pushes the arc clamping plate 5 to contact the circuit surface. As the threaded rod 9 continues to rotate, the arc clamping plates 5 on both sides gradually clamp the circuit. At the same time, the slider 15 compresses the second spring 16. The elastic force of the second spring 16 can automatically adjust the clamping force according to the circuit diameter to ensure that stable limiting can be achieved for circuits of different diameters.

[0030] When disassembly is required, rotate the threaded rod 9 in the opposite direction. The U-shaped plate 8 releases the pressure on the triangular block 7. The second spring 16 returns to its original position and pushes the slider 15 and the slide rod 6 to move in the opposite direction. The arc-shaped clamp 5 separates from the line. Then pull the plug rod 12 to open the clamp 4 and remove the device.

[0031] This device achieves rapid short-circuiting through clamp closure and rod limiting. The adjustable clamping structure of the arc-shaped clamp is adapted to different diameter lines. It is simple and efficient to operate, effectively shortens the high-altitude operation time, and improves the safety and convenience of DC de-icing operations.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A DC de-icing rapid short-circuiting device for transmission lines, comprising a vertical plate (1) and two clamping plates (4), characterized in that, The two clamping plates (4) are symmetrically arranged from top to bottom. An arc-shaped groove is opened on the side of the two clamping plates (4) that is close to each other. The vertical plate (1) is arranged on one side of the two clamping plates (4). A connecting block (3) is fixedly arranged on the side of the clamping plate (4) that is close to the vertical plate (1). A rotating rod (2) is fixedly sleeved inside the connecting block (3). One end of the rotating rod (2) is rotatably connected to the vertical plate (1). A fixing plate (11) is arranged on the front side of the vertical plate (1). Two limiting points are arranged at both ends of the fixing plate (11). The limiting mechanism for the rotation of the rotating rod (2) includes an arc-shaped clamping plate (5) on the inner side of the arc-shaped groove, a sliding rod (6) movably sleeved in the middle of the clamping plate (4), one end of the sliding rod (6) being fixedly connected to the arc-shaped clamping plate (5), a U-shaped plate (8) on the side of the vertical plate (1) away from the clamping plate (4), a pushing mechanism for moving the two sliding rods (6) at both ends of the U-shaped plate (8), and an adjustment mechanism for moving the U-shaped plate (8) on the side of the vertical plate (1) close to the U-shaped plate (8).

2. The DC de-icing fast short-circuit device for transmission lines according to claim 1, characterized in that, The limiting mechanism includes a stop (13) and a plug (12). The fixed plate (11) has a first cavity inside both ends. The stop (13) is slidably disposed inside the first cavity. The plug (12) is fixedly disposed on the side of the stop (13) close to the corresponding rotating rod (2). One end of the plug (12) extends to the outside of the first cavity. The side wall of the rotating rod (2) has a plug hole. The plug (12) is inserted into the plug hole. A first spring (14) is fixedly disposed on the side of the stop (13) away from the plug (12). The other end of the first spring (14) is fixedly connected to the inside of the first cavity.

3. The DC de-icing fast short-circuit device for transmission lines according to claim 1, characterized in that, The pushing mechanism includes a triangular block (7), and two triangular blocks (7) are fixedly set at the end of the corresponding slide rod (6) away from the arc-shaped clamp (5). The inner wall of the U-shaped plate (8) near the triangular block (7) is provided with an inclined surface, and the inclined surface of the U-shaped plate (8) abuts against the inclined surface of the triangular block (7).

4. The DC de-icing fast short-circuit device for transmission lines according to claim 1, characterized in that, The adjustment mechanism includes a threaded rod (9), and a threaded hole is provided at the middle end of the U-shaped plate (8). The threaded rod (9) is threaded into the inside of the threaded hole, and one end of the threaded rod (9) is rotatably connected to the vertical plate (1).

5. The DC de-icing fast short-circuit device for transmission lines according to claim 3, characterized in that, The clamping plate (4) has a second cavity in the middle. A slider (15) is slidably arranged inside the second cavity. The slider (15) is fixedly sleeved with the middle end of the sliding rod (6). A second spring (16) is fixedly arranged on the side of the slider (15) away from the arc-shaped clamping plate (5). The other end of the second spring (16) is fixedly connected to the inner wall of the second cavity.

6. The DC de-icing fast short-circuit device for transmission lines according to claim 1, characterized in that, The sidewall of the U-shaped plate (8) is provided with through holes on both sides of the threaded hole. A limit rod (10) is movably sleeved inside the through hole. One end of the limit rod (10) is fixedly connected to the vertical plate (1).

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