Adjustable insulator lightning arrester

Abstract

The utility model belongs to the technical field of ground wire ice melting insulators, and particularly relates to an adjustable insulator lightning arrester, which comprises an insulator body, a lightning protection box and an insulating arc striking rod, a horizontal adjusting groove is arranged on the inner upper portion of the lightning protection box, an adjusting mechanism is horizontally clamped in the adjusting groove, and the insulating arc striking rod is arranged in the adjusting groove. The two ends of the adjusting mechanism penetrate through the lightning protection box and extend out of the lightning protection box, a plurality of limiting clamping grooves in the vertical direction are formed in the inner lower portion of the lightning protection box, split type wire clamps are clamped in the limiting clamping grooves, and insulated wires are clamped on the inner sides of the split type wire clamps. According to the utility model, the problem of resource waste caused by fixing a single-diameter insulated wire is solved, the problem that the insulated wire shakes back and forth in the air is also inhibited, the condition that the insulated wire is bent back and forth at the fixed position of the lightning protection structure is improved, the protection of the insulated wire is improved, and the service life of the insulated wire is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of ground wire ice melting insulators, and in particular relates to an adjustable insulator lightning protection device. Background Art

[0002] Ground wire ice melting mainly increases the transmission current of the ground wire or uses short-circuit current to convert electrical energy into heat energy, achieve ice melting thermal balance and realize ice melting. The ground wire ice melting voltage mainly depends on the pollution withstand voltage and ice flash voltage (including gap) of the ground wire insulator. The ground wire insulator is a device installed between conductors of different potentials or between conductors and grounding components, which can withstand voltage and mechanical stress. Since the insulator is located at high altitude, it is necessary to install a lightning arrester on it. At present, the lightning arrester will fix an insulating arc rod on the outside of the insulating shield. Although it enhances the lightning protection performance, the outside of the insulating arc rod is very easy to be contaminated with dust and other impurities in the air after long-term use, which affects the lightning protection performance, indirectly reducing the service life of the insulator and the protection performance of the cable.

[0003] There are studies on the problems of external insulating arc-starting rods in lightning protection devices in the prior art, such as patent application CN117174412A - an insulator with a lightning protection structure, which drives the moving plate and the cleaning ring to clean and scrape the part of the arc-starting rod exposed to the air through the cooperation of the connecting plate, the through groove, the insulating cylinder, the motor and the screw, etc., solving the problem that the current external insulating arc-starting rod is very easy to be affected by dust and other impurities in the air, but the existing lightning protection structure can only guarantee the lightning protection performance, but because the insulated wires are mostly fixed by nuts and bolts driving the compression nuts, it is difficult to accurately fix the insulated wires of different diameters, and it is difficult to effectively protect the insulated wires when they are reciprocating in the air. It is very easy to bend back and forth at the fixed position of the insulated wire and the lightning protection structure, which seriously affects the service life of the insulated wire. To this end, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable insulator lightning protection device to solve the problems raised in the above-mentioned background technology that the current lightning protection structure is difficult to accurately fix insulated wires of different diameters, and it is difficult to effectively protect the insulated wires when they swing back and forth at high altitudes, and it is very easy for the insulated wires to bend back and forth at the fixed position between the insulated wires and the lightning protection structure, thereby seriously affecting the service life of the insulated wires.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable insulator lightning protection device, comprising an insulator body, a lightning protection box is fixed on the top of the insulator body, an insulating arc-starting rod is fixed on the lower side of the lightning protection box, a horizontal adjustment groove is provided on the inner upper part of the lightning protection box, an adjustment mechanism is horizontally clamped in the adjustment groove, two ends of the adjustment mechanism respectively penetrate the left and right side walls of the lightning protection box and extend to the outside of the left and right sides of the lightning protection box respectively, a plurality of vertical limit slots are provided on the inner lower part of the lightning protection box, a split wire clamp is clamped in the limit slot, the inner side of the split wire clamp holds an insulated wire, a movable sleeve is fixed on the top of the split wire clamp and is suspended on the bottom of the adjustment mechanism through the movable sleeve and is simultaneously arranged to rotate and move with the adjustment mechanism.

[0006] Furthermore, a wire hole and an adjustment hole connected to the adjustment slot are respectively provided on the left and right side walls of the lightning protection box, and the two adjustment holes are respectively arranged to penetrate the two ends of the adjustment mechanism.

[0007] Furthermore, the adjustment mechanism includes a bidirectional threaded rod and an adjustment rod, the adjustment rod is horizontally clamped in the adjustment groove and its two ends respectively pass through the adjustment holes and extend to the outside of the lightning protection box, the adjustment rod is sleeved with a plurality of worms and is limited in the adjustment groove by the worms and the adjustment holes, a worm wheel is meshed under the worm, the worm wheel sleeve is fixed to the middle part of the bidirectional threaded rod, the bidirectional threaded rod is vertically cross-arranged with the adjustment rod through the meshing worm and worm wheel; the bidirectional threaded rod is threadedly connected with two movable sleeves through threads arranged oppositely at its two ends, and the two movable sleeves are respectively fixed to the two split top ends of the split wire clamp.

[0008] Furthermore, the two parts of the split wire clamp are arranged as two semicircular structured clamp rings A and B, and the clamp ring B and the clamp ring A are arranged in a mirror image at the two ends of the bidirectional threaded rod through a movable sleeve; the top ends of the clamp ring A and the clamp ring B are respectively fixedly connected to the two movable sleeves, and the clamp ring A and the clamp ring B are suspended at the two ends of the bidirectional threaded rod through their respective fixedly connected movable sleeves and are arranged back to back or facing each other through a limit slot, a meshing worm wheel and a worm and an adjusting rod.

[0009] Furthermore, the inner sides of the clamp ring A and the clamp ring B are distributed with a plurality of arc-shaped plates arranged in a circular array, and the sides of the arc-shaped plates distributed on the inner sides of the clamp ring A and the clamp ring B are fixedly connected with sliding columns and are slidably connected to the through holes on the inner sides of the clamp ring A and the clamp ring B through the sliding columns.

[0010] Furthermore, the bottom end of the sliding column is fixedly connected to one side of the arc plate, and the other side of the arc plate is in contact with the outer surface of the insulated wire. The top end of the sliding column is connected to a spring and is elastically connected to the through holes of the clamp ring A and the clamp ring B through the spring. A sliding groove is provided on each of the opposite side walls inside the through hole. A slider slidably connected to the sliding groove is provided on each of the two side walls of the sliding column and elastically slides in the through hole through the slider, the sliding groove and the spring; the arc plate is elastically retracted and retracted on the inner side of the clamp ring A and the clamp ring B through the sliding column, the sliding slider and the sliding groove and the spring; the insulated wire is clamped between the arc plate on the inner side of the clamp ring A and the arc plate on the inner side of the clamp ring B.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model achieves the purpose of fixing insulated wires of different diameters by arranging the adjustment mechanism and the split wire clamp in the lightning protection box, thereby effectively improving the practicability of the device and avoiding the problem of waste of resources caused by fixing an insulated wire of a single diameter. The split wire clamp is suspended at the bottom of the adjustment mechanism by a movable sleeve and rotated and moved with the adjustment mechanism at the same time, so that insulated wires of different diameters can be accurately fixed in the lightning protection box, effectively suppressing the problem of reciprocating shaking of the insulated wires in the air, thereby effectively improving the reciprocating bending of the existing insulated wires at the fixed position with the lightning protection structure, thereby effectively improving the protection of the lightning protection box to the insulated wires and ensuring the service life of the insulated wires.

[0013] 2. The utility model utilizes the transmission principle of a worm gear to enable the bidirectional threaded rod to rotate under the position adjustment of the adjusting rod, forcing the movable sleeves threadedly connected to the two ends of the bidirectional threaded rod to move away from or towards each other under the rotation of the bidirectional threaded rod, so that the clamping ring A and the clamping ring B can achieve the purpose of accurately clamping and fixing insulated wires of different diameters as the two movable sleeves move, effectively avoiding the problem of waste of resources caused by fixing an insulated wire of a single diameter, improving the practicability of the device, and facilitating the installation and maintenance of insulated wires.

[0014] 3. The utility model uses a sliding column to slide the arc plate in the through holes on the inner sides of the clamp rings A and B, so that the arc plate can make corresponding position adjustments according to the outer surface of the insulated wire, so that the arc plate can be more easily attached to the insulated wire, effectively improving the accuracy of fixing insulated wires of different diameters and ensuring the stability of the operation of the device. The elastic effect of the spring is then used to buffer the sliding of the arc plate, thereby effectively suppressing the problem of reciprocating shaking of the insulated wire in the air, effectively improving the situation of reciprocating bending of the existing insulated wire in the fixed position with the lightning protection structure, thereby effectively improving the protection of the lightning protection box to the insulated wire and ensuring the service life of the insulated wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure inside the lightning protection box of the utility model;

[0017] Figure 3 It is a partial side cross-sectional structural schematic diagram of the adjustment mechanism of the utility model;

[0018] Figure 4 It is a schematic diagram of the exploded structure of the split wire clamp of the utility model.

[0019] Among them: 1. Insulator body; 2. Lightning protection box; 3. Insulating arc-starting rod; 4. Adjustment slot; 5. Adjustment mechanism; 501. Bidirectional threaded rod; 502. Adjustment rod; 6. Limiting slot; 7. Split wire clamp; 701. Clamp ring A; 702. Clamp ring B; 8. Movable sleeve; 9. Adjustment hole; 10. Worm; 11. Worm wheel; 12. Arc plate; 13. Sliding column; 14. Spring; 15. Through hole; 16. Slide groove; 17. Sliding block; 18. Wire hole. DETAILED DESCRIPTION

[0020] The following examples are used to further illustrate the content of the utility model, but do not limit the application of the utility model.

[0021] See also Figure 1-Figure 4 An adjustable insulator lightning protection device comprises an insulator body 1 for melting ice of ground wires, a lightning protection box 2 for lightning protection is fixed on the top of the insulator body 1, an insulating arc-starting rod 3 for enhancing lightning protection performance is fixed on the lower side of the lightning protection box 2, an adjusting groove 4 for the movement of an adjusting mechanism 5 is opened in the upper inner part of the upper part of the lightning protection box 2, an adjusting mechanism 5 for clamping insulated wires of different diameters with a split wire clamp 7 is horizontally placed in the adjusting groove 4, two ends of the adjusting mechanism 5 respectively penetrate the left and right side walls of the lightning protection box 2 and extend to the outside of the left and right sides of the lightning protection box 2 respectively, and a plurality of adjusting mechanisms 5 are opened in the lower inner part of the upper part of the lightning protection box 2. A limit card slot 6 is provided in a vertical direction and is used to limit the fixing range of the split wire clamp 7 (several limit card slots 6 are arranged at equal distances). The split wire clamp 7 for clamping the insulated wire is clamped in the limit card slot 6. The inner side of the split wire clamp 7 clamps the insulated wire (the functions and structures of conventional equipment such as the insulated wire are well known in the art, and the connection settings are also common knowledge, so no further explanation is given here and it is not shown in the drawings). A movable sleeve 8 for driving the split wire clamp 7 to move is fixed on the top of the split wire clamp 7, and the movable sleeve 8 is suspended on the bottom of the adjustment mechanism 5 and is simultaneously arranged to rotate and move with the adjustment mechanism 5.

[0022] See also Figure 1-Figure 3 The left and right side walls of the lightning protection box 2 are each provided with a wire hole 18 for the insulated wire to pass through and an adjustment hole 9 connected to the adjustment slot 4 and used to adjust the adjustment mechanism 5. The two adjustment holes 9 are respectively arranged to penetrate the two ends of the adjustment rod 502 in the adjustment mechanism 5;

[0023] The adjustment mechanism 5 includes a bidirectional threaded rod 501 for driving the movable sleeve 8 to move in opposite directions or in opposite directions and an adjustment rod 502 for controlling the rotation of the bidirectional threaded rod 501. The adjustment rod 502 is horizontally clamped in the adjustment groove 4 and its two ends respectively pass through the adjustment hole 9 and extend to the outside of the lightning protection box 2.

[0024] The adjusting rod 502 is provided with a plurality of worms 10 for driving the bidirectional threaded rod 501 to rotate and is limited in the adjusting slot 4 through the worms 10 and the adjusting hole 9 (the plurality of worms 10 are arranged at equal distances, and the distance between the worms is equal to the distance between the limiting slots 6). A worm wheel 11 is meshed below the worm 10 for cooperating with the worm 10 to drive the bidirectional threaded rod 501. The worm wheel 11 is fixedly mounted on the middle part of the bidirectional threaded rod 501. The bidirectional threaded rod 501 is arranged vertically and crosswise with the adjusting rod 502 through the meshing worm 10 and the worm wheel 11.

[0025] The bidirectional threaded rod 501 is threadedly connected to the two movable sleeves 8 through the threads arranged oppositely at both ends thereof, and the two movable sleeves 8 are respectively fixed to the top ends of the two split parts of the split wire clamp 7.

[0026] See also Figure 2 and Figure 4 The two parts of the split wire clamp 7 are arranged as two semicircular clamp rings A701 and B702, and the clamp ring B702 and A701 are arranged at both ends of the bidirectional threaded rod 501 in a mirror image through a movable sleeve 8;

[0027] The top ends of the clamp ring A701 and the clamp ring B702 are fixedly connected to two movable sleeves 8 respectively, and the clamp ring A701 and the clamp ring B702 are suspended at both ends of the bidirectional threaded rod 501 through their respective fixedly connected movable sleeves 8 and are arranged to be opposite to or opposite to each other through the limit slot 6, the meshing worm wheel 11 and the worm 10 and the adjusting rod 502;

[0028] The inner sides of the clamp ring A701 and the clamp ring B702 are both provided with a plurality of arc plates 12 arranged in a ring array and used to accurately fix the insulated wires. The sides of the arc plates 12 distributed on the inner sides of the clamp ring A701 and the clamp ring B702 are both fixedly connected with sliding posts 13 used to cooperate with the expansion and contraction of the arc plates 12 and are respectively slidably connected to the through holes 15 on the inner sides of the clamp ring A701 and the clamp ring B702 through the sliding posts 13.

[0029] The bottom end of the sliding column 13 is fixedly connected to one side of the arc plate 12, and the other side of the arc plate 12 is in contact with the outer surface of the insulated wire. The top end of the sliding column 13 is connected to a spring 14 for buffering the expansion and contraction of the arc plate 12 and is elastically connected to the through holes 15 of the clamp ring A701 and the clamp ring B702 through the spring 14.

[0030] A slide groove 16 for limiting the sliding range of the sliding column 13 is provided on each of the opposite side walls inside the through hole 15, and a slider 17 for sliding and slidingly connected with the slide groove 16 is provided on each of the two side walls of the sliding column 13 and elastically slides in the through hole 15 through the slider 17, the slide groove 16 and the spring 14;

[0031] The arc plate 12 is elastically extended and retracted on the inner side of the clamp ring A701 and the clamp ring B702 through the sliding column 13, the slidingly connected slider 17 and the sliding groove 16 and the spring 14, and the insulated wire is clamped between the arc plate 12 on the inner side of the clamp ring A701 and the arc plate 12 on the inner side of the clamp ring B702.

[0032] The working principle and use process of this embodiment are as follows: Figure 1-Figure 4 As shown in the figure, during the assembly of the insulator lightning protection device, the insulated wires of different diameters are clamped and fixed between the clamp ring A701 and the clamp ring B702 of the split wire clamp 7, so as to achieve the purpose of fixing the insulated wires of different diameters, solve the problem of waste of resources caused by fixing the insulated wire of a single diameter, and also effectively suppress the problem of reciprocating swing of the insulated wire in the air, improve the reciprocating bending of the insulated wire in the fixed position with the lightning protection structure, thereby effectively improving the protection of the lightning protection box 2 to the insulated wire and ensuring the service life of the insulated wire.

[0033] When it is necessary to fix the insulated wire, the operator must first pass the insulated wire from the wire hole 18 on the left side of the lightning protection box 2 to the wire hole 18 on the right side of the lightning protection box 2 and extend it out, and then use a wrench or other tool to pull the adjusting rod 502 extending from the left side of the lightning protection box 2. At this time, the worm 10 mounted on the adjusting rod 502 will move to the left side of the lightning protection box 2 as the adjusting rod 502 is pulled. At the same time, the worm gear 11 will also drive the bidirectional threaded rod 501 to rotate synchronously with the movement of the worm 10. Since the split wire clamp 7 is clamped in the limit slot 6, the bidirectional threaded rod 501 will rotate in situ under the limit of the limit slot 6. Since the threads at both ends of the bidirectional threaded rod 501 are opposite, the clamp ring A701 and the clamp ring B702 will rotate with the bidirectional threaded rod 501 as it rotates in situ. The two movable sleeves 8 move toward each other synchronously, so that the clamp ring A701 and the clamp ring B702 move closer to the two sides of the insulated wire respectively, until the outer surface of the insulated wire contacts the arc plate 12 inside the clamp ring A701 and the arc plate 12 inside the clamp ring B702, and then continue to pull the adjustment rod 502. At this time, the arc plate 12 will be squeezed under the contact with the insulated wire, and the sliding column 13 will slide to the inside of the through hole 15 through the slider 17 and the slide groove 16 under the compression of the arc plate 12 and drive the spring 14 to squeeze and contract until the arc plate 12 contacts the through hole 15 and fits with the insulated wire, and stop pulling the adjustment rod 502. At this time, the insulated wire is accurately fixed in the lightning protection box 2 by the arc plate 12 inside the clamp ring A701 and the arc plate 12 inside the clamp ring B702;

[0034] When the insulated wire is damaged and needs to be replaced, the operator only needs to use a wrench or other tool to pull the adjusting rod 502 extending from the right side of the lightning protection box 2. At this time, the worm 10 set on the adjusting rod 502 will move to the right side of the lightning protection box 2 as the adjusting rod 502 is pulled. At the same time, the worm wheel 11 will also drive the two-way threaded rod 501 to rotate synchronously under the movement of the worm 10. Since the split wire clamp 7 is clamped in the limit slot 6, the two-way threaded rod 501 will rotate in place under the limit of the limit slot 6. Since the threads at both ends of the two-way threaded rod 501 are opposite, the clamp ring A70 1 and clamp ring B702 will move synchronously with the two movable sleeves 8 in the in-situ rotation of the bidirectional threaded rod 501, so that the arc plate 12 inside the clamp ring A701 and the arc plate 12 inside the clamp ring B702 will release the insulated wire at the same time. At this time, the arc plate 12 will release the squeezing force when the insulated wire is loosened, and the sliding column 13 will slide to the outside of the through hole 15 through the slider 17 and the slide groove 16 when the squeezing force of the arc plate 12 is released, and drive the spring 14 to reset, stop pulling the adjusting rod 502, pull the damaged insulated wire out of the lightning protection box 2, and then replace it with a new insulated wire.

Claims

1. An adjustable insulator lightning protection device, comprising an insulator body, a lightning protection box is fixed on the top of the insulator body, and an insulating arc-starting rod is fixed on the lower side of the lightning protection box, characterized in that: A horizontal adjustment slot is provided at the upper inner part of the lightning protection box, an adjustment mechanism is horizontally placed in the adjustment slot, two ends of the adjustment mechanism respectively penetrate the left and right side walls of the lightning protection box and extend to the outside of the left and right sides of the lightning protection box respectively, a plurality of vertical limit slots are provided at the lower inner part of the lightning protection box, a split wire clamp is placed in the limit slot, the inner side of the split wire clamp holds an insulated wire, a movable sleeve is fixed to the top of the split wire clamp and is suspended to the bottom of the adjustment mechanism through the movable sleeve and is simultaneously arranged to rotate and move with the adjustment mechanism.

2. The adjustable insulator lightning protection device according to claim 1, characterized in that: A wire hole and an adjustment hole connected to the adjustment slot are respectively provided on the left and right side walls of the lightning protection box, and the two adjustment holes are respectively arranged to penetrate the two ends of the adjustment mechanism.

3. The adjustable insulator lightning protection device according to claim 2, characterized in that: The adjustment mechanism includes a bidirectional threaded rod and an adjustment rod. The adjustment rod is horizontally clamped in the adjustment groove and its two ends respectively pass through the adjustment holes and extend to the outside of the lightning protection box. The adjustment rod is sleeved with a plurality of worms and is limited in the adjustment groove by the worms and the adjustment holes. A worm wheel is meshed under the worm, and the worm wheel is sleeved and fixed to the middle part of the bidirectional threaded rod. The bidirectional threaded rod is vertically cross-arranged with the adjustment rod through the meshing worm and worm wheel.

4. The adjustable insulator lightning protection device according to claim 3, characterized in that: The bidirectional threaded rod is threadably connected with two movable sleeves through threads arranged oppositely at two ends thereof, and the two movable sleeves are respectively fixed to the top ends of the two split parts of the split wire clamp.

5. The adjustable insulator lightning protection device according to claim 4, characterized in that: The two parts of the split wire clamp are arranged as two semicircular clamp rings A and B, and the clamp ring B and the clamp ring A are arranged at the two ends of the bidirectional threaded rod in a mirror image through a movable sleeve.

6. The adjustable insulator lightning protection device according to claim 5, characterized in that: The top ends of the clamp ring A and the clamp ring B are fixedly connected to two movable sleeves respectively. The clamp ring A and the clamp ring B are suspended on the two ends of the bidirectional threaded rod through their respective fixedly connected movable sleeves and are arranged back to back or facing each other through limit slots, meshing worm wheels and worms, and adjusting rods.

7. The adjustable insulator lightning protection device according to claim 5, characterized in that: The inner sides of the clamp ring A and the clamp ring B are distributed with a plurality of arc plates arranged in a circular array, and the sides of the arc plates distributed on the inner sides of the clamp ring A and the clamp ring B are fixedly connected with sliding columns and are slidably connected to the through holes on the inner sides of the clamp ring A and the clamp ring B through the sliding columns.

8. The adjustable insulator lightning protection device according to claim 7, characterized in that: The bottom end of the sliding column is fixedly connected to one side of the arc plate, and the other side of the arc plate is in contact with the outer surface of the insulated wire. The top end of the sliding column is connected to a spring and is elastically connected to the through holes of the clamp ring A and the clamp ring B through the spring. A sliding groove is provided on each of the opposite side walls inside the through hole. A sliding block slidably connected to the sliding groove is provided on each of the two side walls of the sliding column and elastically slides in the through hole through the sliding block, the sliding groove and the spring.

9. The adjustable insulator lightning protection device according to claim 8, characterized in that: The arc plate is elastically retracted on the inner side of the clamp ring A and the clamp ring B through a sliding column, a sliding block and a sliding groove connected in a sliding manner and a spring.

10. The adjustable insulator lightning protection device according to claim 9, characterized in that: The insulated wire is clamped between the arc plate on the inner side of the clamp ring A and the arc plate on the inner side of the clamp ring B.

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