Insulation protection device for live working of low-voltage power distribution network

Abstract

The utility model discloses an insulation protection device for live working of a low-voltage power distribution network, comprising an upper insulation cylinder, the lower end of the upper insulation cylinder is provided with a lower insulation cylinder, the outer wall of the upper insulation cylinder is fixedly provided with first side plates at two sides, and the outer wall of the lower insulation cylinder is fixedly provided with second side plates at two sides. Threaded holes are formed in the first side plate and the second side plate, a plurality of threaded holes are formed, and connecting screws are arranged in the threaded holes, so that a user can place the upper insulating cylinder and the lower insulating cylinder on the upper side and the lower side of a distribution wire needing insulation protection, and the first side plate makes contact with the second side plate; and then the connecting screws are screwed into the threaded holes, so that the effect of fixing the upper insulating cylinder and the lower insulating cylinder is achieved, and at the moment, insulation protection can be performed on the low-voltage line to prevent a worker from mistakenly touching the low-voltage line.

Description

Technical Field

[0001] This utility model relates to the field of live-line working technology, and more specifically, it relates to an insulation protection device for live-line working in low-voltage power distribution networks. Background Technology

[0002] Currently, low-voltage distribution networks are often characterized by complex wiring, with upper and lower lines on the same pole often originating from different power sources. When handling line faults and defects, power supply personnel sometimes need to climb poles and traverse the lower-level lines on the same pole to carry out emergency repairs on the upper-level lines. During emergency repairs, to minimize the power outage area, low-voltage live-line work, also known as on-line work, is typically performed on the lower-level lines. Before conducting live-line work, insulating protective devices are usually used to wrap the lines to protect the workers.

[0003] The current method involves wrapping the lower-level lines with insulating tape. This method is simple to use, easy to carry, and has relatively low operating costs. It is suitable for all low-voltage lines, but the operation is slow and there may be exposed points, which can easily lead to accidental contact.

[0004] Furthermore, the method of wrapping low-voltage power distribution wires with insulating tape is time-consuming and laborious, and also reduces the overall efficiency of power distribution wire maintenance after the live work is completed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides an insulation protection device for live working in low-voltage distribution networks, so as to solve the technical problems mentioned in the background art, such as the slow operation speed and the easy occurrence of accidental contact when using insulating tape to wrap the lower line.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an insulating protection device for live-line work in low-voltage distribution networks, comprising an upper insulating cylinder, a lower insulating cylinder at the lower end of the upper insulating cylinder, a first side plate fixedly provided on both sides of the outer wall of the upper insulating cylinder, and a second side plate fixedly provided on both sides of the outer wall of the lower insulating cylinder, each of the first and second side plates having threaded holes, a plurality of threaded holes having connecting screws inside, and clamping devices provided at both ends of the upper and lower insulating cylinders, each clamping device comprising a housing, the housing being fixedly connected to both ends of the upper and lower insulating cylinders.

[0009] The present invention is further configured such that a circular groove is provided on the outer wall of the housing, and a connecting rod is slidably provided on the inner wall of the circular groove at the bottom. The lower end of the connecting rod passes through the circular groove and is fixedly provided with an insulating clamp. The insulating clamp is located inside the upper insulating cylinder and the lower insulating cylinder. An inclined block is provided at the other end of the connecting rod, and a spring is provided at the bottom of the inclined block. The other end of the spring is fixedly connected to the inner wall of the circular groove, which facilitates the clamping and fixing of the power distribution cable.

[0010] The present invention is further configured such that the outer wall of the housing is provided with an external thread, and the outer end of the housing is provided with a fastening ring. The fastening ring is threadedly installed to the housing through the external thread, and the inclined block is in contact with the inner wall of the fastening ring, which facilitates the adjustment of the distance between the insulating clamps.

[0011] The present invention is further configured such that a retaining ring is fixedly provided at the outer end of the threaded hole and on the upper end face of the first side plate, the upper end of the connecting screw is located inside the retaining ring, and a limiting ring is fixedly provided on the upper end face of the retaining ring. The limiting ring can cover the connecting screw, which facilitates limiting the connecting screw and prevents it from being lost.

[0012] The present invention is further provided that the upper end face of the connecting screw is provided with an internal hexagonal groove, which is located inside the limiting ring, so as to facilitate the disassembly and installation of the connecting screw.

[0013] The present invention is further provided that the inner wall of each insulating clamp is provided with a rubber pad.

[0014] The present invention is further provided that a cable bundle is fixedly provided on the outer wall of the housing, and the cable bundle is made of rubber material to facilitate the protection of the access position of the power distribution cable.

[0015] The present invention is further provided that the outer wall of the fastening ring is provided with anti-slip texture, which facilitates the disassembly of the fastening ring.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an insulation protection device for live working in low-voltage power distribution networks, which has the following beneficial effects:

[0018] 1. By setting up upper and lower insulating cylinders and connecting screws, users can place the upper and lower insulating cylinders on the upper and lower sides of the low-voltage distribution line that needs insulation protection, and make the first and second side plates contact each other. Then, the connecting screws are screwed into the threaded holes to fix the upper and lower insulating cylinders. This can insulate and protect the low-voltage line, preventing workers from accidentally touching it. Compared with wrapping with insulating tape, this design is more convenient and faster to install and remove, increasing the efficiency of live-line work.

[0019] 2. By setting up a housing, a circular groove, a connecting rod, and an insulating clamp, the user can rotate the fastening ring to make its inner wall contact the outer wall of the inclined block, thereby compressing the spring. At this time, the connecting rod can drive the insulating clamp to move, so that the insulating clamp contacts the outer wall of the power distribution line, thereby achieving the effect of fixing the low-voltage power distribution line and preventing loosening.

[0020] 3. By setting a retaining ring, a limiting ring, and an internal hexagonal slot, users can pass screwdrivers and other tools through the limiting ring to contact the internal hexagonal slot at the upper end of the connecting screw and rotate the connecting screw. At this time, the upper insulating cylinder and the upper insulating cylinder can be separated, which facilitates the disassembly of the device after the live work is completed, increasing work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an insulation protection device for live working in a low-voltage power distribution network in its unused state.

[0022] Figure 2 Exploded view of the installation of the upper insulating cylinder, insulating clamp, and tilting block;

[0023] Figure 3 This is a schematic diagram showing the positions of the second side plate, threaded hole, shell, and circular groove on the lower insulating cylinder.

[0024] Figure 4 A schematic diagram showing the positions of the insulating clamp, tilting block, spring, and rubber pad on the connecting rod;

[0025] Figure 5 This is a schematic diagram showing the location of the internal hexagonal slot on the connecting screw.

[0026] In the diagram: 1. Upper insulating cylinder; 2. Lower insulating cylinder; 3. First side plate; 4. Second side plate; 5. Threaded hole; 6. Connecting screw; 7. Housing; 8. Circular groove; 9. Connecting rod; 10. Insulating clamp; 11. Inclined block; 12. Spring; 13. Fastening ring; 14. Retaining ring; 15. Limiting ring; 16. Socket hexagonal groove; 17. Rubber pad; 18. Cable harness; 19. Anti-slip texture. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figure 1-5 An insulating protection device for live-line work in low-voltage power distribution networks includes an upper insulating cylinder 1, a lower insulating cylinder 2 at the lower end of the upper insulating cylinder 1, a first side plate 3 fixedly installed on both sides of the outer wall of the upper insulating cylinder 1, and a second side plate 4 fixedly installed on both sides of the outer wall of the lower insulating cylinder 2. Threaded holes 5 are provided on both the first side plate 3 and the second side plate 4. Multiple threaded holes 5 are provided, and each threaded hole 5 has a connecting screw 6 inside. Clamping devices are provided at both ends of the upper insulating cylinder 1 and the lower insulating cylinder 2. The clamping devices include a housing 7, which is fixedly connected to both ends of the upper insulating cylinder 1 and the lower insulating cylinder 2.

[0031] In this embodiment, circular grooves 8 are formed on the outer wall of the housing 7. Connecting rods 9 are slidably provided on the inner wall and at the bottom of each circular groove 8. The lower ends of the connecting rods 9 pass through the circular grooves 8 and are fixedly fitted with insulating clamps 10. The insulating clamps 10 are located inside the upper insulating cylinder 1 and the lower insulating cylinder 2. An inclined block 11 is provided at the other end of the connecting rod 9. A spring 12 is provided at the bottom of each inclined block 11. The other ends of the springs 12 are fixedly connected to the inner wall of the circular groove 8. Preferably, as shown... Figure 3 As shown, the circular groove 8 has a flat platform in the middle, the bottom end of the spring 12 abuts against the flat platform in the middle of the circular groove 8, the outer wall of the housing 7 is provided with external threads, and the outer end of the housing 7 is provided with a fastening ring 13. The fastening ring 13 is threaded to the housing 7 through the external threads, the inclined block 11 is in contact with the inner wall of the fastening ring 13, the inner wall of the insulating clamp 10 is provided with a rubber pad 17, and the outer wall of the fastening ring 13 is provided with anti-slip texture 19.

[0032] More specifically, the user can place the upper insulating cylinder 1 and the lower insulating cylinder 2 on the upper and lower sides of the low-voltage distribution line that needs insulation protection, and make the first side plate 3 and the second side plate 4 contact each other. Then, the connecting screw 6 is screwed into the threaded hole 5 to fix the upper insulating cylinder 1 and the lower insulating cylinder 2. At this time, the low-voltage line can be insulated and protected to prevent workers from accidentally touching it. When the distribution line enters the interior of the upper insulating cylinder 1 and the lower insulating cylinder 2, the inner wall of the fastening ring 13 can be rotated to make it contact the outer wall of the inclined block 11, thereby compressing the spring 12. At this time, the connecting rod 9 can drive the insulating clamp 10 to move, so that the insulating clamp 10 contacts the outer wall of the distribution line, thereby achieving the effect of fixing the low-voltage distribution line and preventing loosening.

[0033] Please see Figure 1 , Figure 2 and Figure 5 As an implementation method to shield the connecting screw 6 and prevent it from falling off: a retaining ring 14 is fixedly provided at the outer end of the threaded hole 5 and on the upper end face of the first side plate 3. The upper end of the connecting screw 6 is located inside the retaining ring 14. A limiting ring 15 is fixedly provided on the upper end face of the retaining ring 14. The limiting ring 15 can shield the connecting screw 6. An internal hexagonal groove 16 is opened on the upper end face of the connecting screw 6. The internal hexagonal groove 16 is located inside the limiting ring 15.

[0034] Specifically, the user can pass a screwdriver or other tool through the limiting ring 15 and contact the internal hexagonal groove 16 at the upper end of the connecting screw 6 and rotate the connecting screw 6. At this time, the upper insulating cylinder 1 and the upper insulating cylinder 2 can be separated, so as to facilitate the disassembly of the device after the live work is completed, thereby increasing work efficiency.

[0035] Please refer to Figure 1 As a further embodiment for protecting low-voltage power distribution lines: cable bundles 18 are fixedly installed on the outer wall of the housing 7, and the cable bundles 18 are made of rubber.

[0036] Specifically, the connection points of the power distribution lines can be protected to prevent wear and tear.

[0037] In summary, when using the overall equipment: the user can place the upper insulating cylinder 1 and the lower insulating cylinder 2 on the upper and lower sides of the low-voltage power distribution line that needs insulation protection, and make the first side plate 3 and the second side plate 4 contact each other. Then, screw the connecting screw 6 into the threaded hole 5 to fix the upper insulating cylinder 1 and the lower insulating cylinder 2. At this time, the low-voltage line can be insulated and protected to prevent workers from accidentally touching it. When the power distribution line enters the interior of the upper insulating cylinder 1 and the lower insulating cylinder 2, the inner wall of the upper insulating cylinder 1 and the outer wall of the inclined block 11 can be made to contact by rotating the fastening ring 13. When the spring 12 is compressed, the connecting rod 9 can move the insulating clamp 10 so that it contacts the outer wall of the power distribution line, thereby fixing the low-voltage power distribution line and preventing it from loosening. When it is necessary to disassemble the device, a screwdriver or other tool can be passed through the limit ring 15 and contacted with the internal hexagonal groove 16 at the upper end of the connecting screw 6 and rotated. At this time, the upper insulating cylinder 1 and the upper insulating cylinder 2 can be separated, so as to facilitate the disassembly of the device after the live work is completed and increase the work efficiency.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model 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 utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An insulating protective device for live-line work in low-voltage distribution networks, comprising an upper insulating cylinder (1), characterized in that: The lower end of the upper insulating cylinder (1) is provided with a lower insulating cylinder (2). The outer wall of the upper insulating cylinder (1) is fixedly provided with a first side plate (3) on both sides. The outer wall of the lower insulating cylinder (2) is fixedly provided with a second side plate (4) on both sides. The first side plate (3) and the second side plate (4) are provided with threaded holes (5). Multiple threaded holes (5) are provided and each of them is provided with a connecting screw (6). Both ends of the upper insulating cylinder (1) and the lower insulating cylinder (2) are provided with clamping devices. The clamping devices include a housing (7). The housing (7) is fixedly connected to both ends of the upper insulating cylinder (1) and the lower insulating cylinder (2).

2. The insulation protection device for live working in low-voltage distribution networks according to claim 1, characterized in that: The outer wall of the housing (7) is provided with a circular groove (8). A connecting rod (9) is slidably provided on the inner wall of the circular groove (8) and at the bottom. The lower end of the connecting rod (9) passes through the circular groove (8) and is fixedly provided with an insulating clamp (10). The insulating clamp (10) is located inside the upper insulating cylinder (1) and the lower insulating cylinder (2). The other end of the connecting rod (9) is provided with an inclined block (11). The bottom of the inclined block (11) is provided with a spring (12). The other end of the spring (12) is fixedly connected to the inner wall of the circular groove (8).

3. The insulation protection device for live working in low-voltage distribution networks according to claim 2, characterized in that: The outer wall of the housing (7) is provided with external threads, and the outer end of the housing (7) is provided with fastening rings (13). The fastening rings (13) are threaded to the housing (7) through external threads, and the inclined blocks (11) are in contact with the inner wall of the fastening rings (13).

4. The insulation protection device for live working in low-voltage distribution networks according to claim 1, characterized in that: A retaining ring (14) is fixedly provided at the outer end of the threaded hole (5) and on the upper end face of the first side plate (3). The upper end of the connecting screw (6) is located inside the retaining ring (14). A limiting ring (15) is fixedly provided on the upper end face of the retaining ring (14). The limiting ring (15) can block the connecting screw (6).

5. An insulation protection device for live-line work in low-voltage distribution networks according to claim 4, characterized in that: The upper end face of the connecting screw (6) is provided with an internal hexagonal groove (16), which is located inside the limiting ring (15).

6. An insulation protection device for live-line work in low-voltage distribution networks according to claim 2, characterized in that: Each insulating clamp (10) has a rubber pad (17) on its inner wall.

7. An insulation protection device for live-line work in low-voltage distribution networks according to claim 1, characterized in that: The outer wall of the housing (7) is fixed with a wire harness tube (18), which is made of rubber.

8. An insulation protection device for live-line work in low-voltage distribution networks according to claim 3, characterized in that: The outer wall of each fastening ring (13) is provided with anti-slip texture (19).

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