Insulator stringing and fixing device

Abstract

The utility model belongs to the technical field of insulator installation, and particularly relates to an insulator stringing fixing device, which comprises a locking connecting ring, a wire locking piece, a first locking screw rod, a second locking screw rod and a torque nut, and is characterized in that the locking connecting ring comprises an upper side locking ring and a lower side locking ring; one end of the upper side locking ring and one end of the lower side locking ring are both rotationally connected to the first locking screw, the first locking screw is in threaded connection with a torque nut, a plurality of limiting holes are formed in the other end of the upper side locking ring side by side, and a through hole is formed in the other end of the lower side locking ring. The second locking screw penetrates through the through hole and one of the multiple limiting holes to be in threaded connection with one torque nut. According to the utility model, a traditional operation method is changed, a clamp fixing mode is developed to replace a traditional binding process according to the shape of the pin insulator and the characteristics of the wire, and compared with the wire binding process, the clamp fixing mode is simple to operate, has low requirements on operators, simplifies the operation, reduces the labor intensity and improves the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of insulator installation, and particularly relates to an insulator wire tightening and fixing device. Background Art

[0002] In power systems, insulators are used to support and suspend conductors and insulate them from towers. There are various types of insulators used on overhead lines, including pin-type and suspension-type insulators.

[0003] Pin insulators are primarily used in overhead distribution lines below 10kV. Pin insulator conductors are secured using two main methods: top-binding and side-binding. The top-binding method is suitable for straight poles. The binding process typically involves wrapping aluminum tape around the conductor at the binding point (or copper wire without wrapping). The binding wire is then coiled into a disc, leaving a short end approximately 250mm long. Next, the coiled binding wire is wrapped around the inside of the insulator neck to the conductor on the right side of the insulator, and several more turns are made, from the bottom of the conductor to the outside, and then to the top. Finally, the coiled binding wire is wrapped around the inside of the insulator neck to the conductor on the right side of the insulator, and several more turns are made, from the bottom of the conductor to the inside, and then to the top. Once the binding is complete, the binding wire should be wrapped several times around the conductors on both sides of the insulator.

[0004] However, when inspecting 10kV overhead lines, we often see the insulation of overhead conductors and tie wires on straight rod insulators burn out, and even cause line break accidents. The possible reasons for the deterioration and burning of the conductor insulation layer and tie wire insulation are:

[0005] 1. Electromagnetic induction. The winding direction of the wires on both sides of the insulator is not standardized, and the rubber insulation at the end of the wire braid is damaged, causing the internal copper core wires to be exposed and twisted together to form a loop. Under electromagnetic induction, the current causes the wires to heat up, and long-term operation causes insulation deterioration;

[0006] 2. Electrostatic induction. Under the action of a strong electric field, the capacitance effect between the core of the overhead insulated conductor and the core of the plastic copper wire, as well as between the plastic copper wire and the insulator and crossarm, causes leakage current to cause aging of the insulation layer;

[0007] 3. Ground short circuit. When the insulation of the overhead conductor is damaged, a ground short circuit occurs. The ground current burns the conductor insulation and the binding wire.

[0008] At present, in the construction, reconstruction, maintenance and overhaul of distribution network overhead lines below 10kV, the workload of tying and fixing conductors on insulators is large and the tying process requirements are high. In addition, the construction workers generally lack a sense of responsibility. This easily leads to unqualified conductor tying and fixing quality, resulting in defects in the distribution network overhead lines when they are put into operation. The resulting accidents occur frequently. Therefore, based on the above defects, the applicant has proposed a better technical solution to solve the above technical problems.

[0009] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0010] The utility model provides an insulator tightening and fixing device, aiming to solve the technical problems pointed out in the above background technology.

[0011] In order to achieve the above-mentioned purpose, the technical solution of the utility model is:

[0012] The insulator wire tightening and fixing device includes a locking connecting ring, a wire locking piece, a first locking screw, a second locking screw and a torque nut.

[0013] The locking connection ring includes an upper locking ring and a lower locking ring, one end of the upper locking ring and one end of the lower locking ring are both rotatably connected to the first locking screw, the first locking screw passes through one end of the wire lock member and is threadedly connected to one of the torque nuts,

[0014] The other end of the upper locking ring is provided with multiple limiting holes side by side, and the other end of the lower locking ring is provided with a through hole. The second locking screw passes through the through hole and one of the multiple limiting holes, and passes through the other end of the wire lock and is threadedly connected to one of the torque nut.

[0015] Preferably, the upper locking ring includes an upper arc portion and an upper connecting portion, one end of the upper arc portion is rotatably connected to the first locking screw, and the other end is connected to the upper connecting portion, and a plurality of the limiting holes are opened on the upper connecting portion.

[0016] Preferably, the upper arc portion and the upper connecting portion are integrated.

[0017] Preferably, the lower locking ring includes a lower arc-shaped portion and a lower connecting portion, one end of the lower arc-shaped portion is rotatably connected to the first locking screw, and the other end is connected to the lower connecting portion, the through hole is provided on the lower connecting portion, and an elliptical area for clamping the insulator is formed between the upper arc-shaped portion and the lower connecting portion.

[0018] Preferably, the lower arc-shaped portion and the lower connecting portion are integrated.

[0019] Preferably, a rotating rod is provided on the second locking screw.

[0020] Preferably, a groove for embedding the wire is provided in the middle of the lower end of the wire lock.

[0021] Preferably, a protective cover is provided on the upper end of the wire lock member.

[0022] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0023] 1. The utility model provides an insulator tightening and fixing device with a simple structure and easy use. It changes the traditional operation method and develops a method of fixing with a clamp to replace the traditional bundling process according to the shape of the pin insulator and the characteristics of the conductor. The clamp fixing method is simpler to operate than the conductor bundling process, has low requirements on the operator, simplifies the process, reduces labor intensity and improves work efficiency.

[0024] 2. In the present invention, an elliptical area with adjustable size for clamping insulators is formed between the upper locking ring and the lower locking ring. That is, when the second locking screw passes through the through hole and the limiting holes at different positions, elliptical areas of different sizes are selected at several specific levels, thereby realizing step-by-step adjustment to be suitable for clamping insulators of different sizes, thereby improving the applicability of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the state in which the insulator is fastened to the conductor according to the present invention.

[0027] The main component symbols in the figure are explained as follows:

[0028] 1. Locking connecting ring; 11. Upper locking ring; 111. Upper arc-shaped portion; 112. Upper connecting portion; 12. Lower locking ring; 121. Lower arc-shaped portion; 122. Lower connecting portion; 2. Wire lock; 21. Groove; 3. First locking screw; 4. Second locking screw; 5. Torque nut; 6. Rotating rod; 7. Protective cover; 100. Limiting hole; 200. Through hole; 300. Insulator; 400. Wire; 500. Cushion. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example

[0031] like Figure 1 and Figure 2As shown, the insulator wire tightening and fixing device includes a locking connecting ring 1, a wire locking member 2, a first locking screw 3, a second locking screw 4 and a torque nut 5. The locking connecting ring 1 includes an upper locking ring 11 and a lower locking ring 12. One end of the upper locking ring 11 and one end of the lower locking ring 12 are both rotatably connected to the first locking screw 3. The first locking screw 3 passes through one end of the wire locking member 2 and is threadedly connected to a torque nut 5. The other end of the upper locking ring 11 is provided with multiple limiting holes 100 side by side, and the other end of the lower locking ring 12 is provided with a through hole 200. The second locking screw 4 passes through the through hole 200 and one of the multiple limiting holes 100, and passes through the other end of the wire locking member 2 and is threadedly connected to a torque nut 5.

[0032] In this embodiment, there are three limiting holes 100, and the three limiting holes 100 are arranged in an arc shape, so that when the upper locking ring 11 is rotated to different angles, the second locking screw 4 can simultaneously pass through the through hole 200 and any one of the three limiting holes 100.

[0033] This clamp changes the traditional working method. According to the shape of the pin insulator 300 and the characteristics of the conductor 400, a clamp fixing method is developed to replace the traditional bundling process. Compared with the conductor bundling process, the clamp fixing method is simple to operate and has low requirements for operators. It simplifies the process, reduces labor intensity and improves work efficiency.

[0034] In this embodiment, the upper locking ring 11 includes an upper arc-shaped portion 111 and an upper connecting portion 112. One end of the upper arc-shaped portion 111 is rotatably connected to the first locking screw 3, and the other end is connected to the upper connecting portion 112. A plurality of limiting holes 100 are provided on the upper connecting portion 112. Specifically, the upper arc-shaped portion 111 and the upper connecting portion 112 are integrated.

[0035] In this embodiment, the lower locking ring 12 includes a lower arc portion 121 and a lower connecting portion 122. One end of the lower arc portion 121 is rotatably connected to the first locking screw 3, and the other end is connected to the lower connecting portion 122. A through hole 200 is provided on the lower connecting portion 122, and an elliptical interval for clamping the insulator 300 is formed between the upper arc portion 111 and the lower connecting portion 122; the size of the elliptical interval is adjustable, that is, when the second locking screw 4 passes through the through hole 200 and the limiting holes 100 at different positions, elliptical intervals of different sizes are selected at several specific levels, thereby realizing step-by-step adjustment to be suitable for clamping insulators 300 of different sizes, thereby improving the applicability of the clamp.

[0036] Specifically, the lower arc-shaped portion 121 and the lower connecting portion 122 are integrated; similar to the integrated configuration of the upper arc-shaped portion 111 and the upper connecting portion 112 mentioned above, the one-piece molding facilitates the manufacture and use of components.

[0037] In this embodiment, please refer to Figure 2 A rotating rod 6 is provided on the second locking screw 4; the rotating rod 6 is used to rotate the second locking screw 4; a groove 21 for embedding the wire 400 is opened in the middle of the lower end of the wire lock 2; the groove 21 facilitates the embedding of the wire 400, and at the same time, in order to facilitate the protection and fastening of the wire 400, a soft pad 500 can be placed on the upper locking ring 11, and finally the second locking screw 4 is rotated by the rotating rod 6 to fasten the wire 400.

[0038] In this embodiment, a protective cover 7 is fixed on the upper end of the wire lock member 2 ; the protective cover 7 is used to protect the torque nut 5 .

[0039] The working principle of this utility model:

[0040] The utility model provides an insulator wire tightening and fixing device. During use, the positional relationship between the upper locking ring 11 and the lower locking ring 12 is adjusted according to the different sizes of insulators 300, and the second locking screw 4 is used to lock the insulator 300 by passing through the through hole 200 and the corresponding limit hole 100. At the same time, the wire 400 is placed between the first locking screw 3 and the second locking screw 4, and the wire 400 is just stuck in the groove 21 of the wire locking member 2. Finally, the first locking screw 3 and the second locking screw 4 are locked to the wire locking member 2 by the torque nut 5, so that the wire 400 and the insulator 300 are firmly locked. During locking, the locking force is controllable due to the special torque nut 5 on the wire locking member 2. When the force is reached, the nut automatically disconnects, and the wire 400 is not locked in place or pressed too tightly.

[0041] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. Insulator tightening and fixing device, characterized in that: It comprises a locking connecting ring (1), a wire locking member (2), a first locking screw (3), a second locking screw (4) and a torque nut (5). The locking connection ring (1) comprises an upper locking ring (11) and a lower locking ring (12), one end of the upper locking ring (11) and one end of the lower locking ring (12) are both rotatably connected to the first locking screw (3), the first locking screw (3) passes through one end of the wire lock member (2) and is threadedly connected to one of the torque nuts (5). The other end of the upper locking ring (11) is provided with a plurality of limiting holes (100) arranged side by side, and the other end of the lower locking ring (12) is provided with a through hole (200). The second locking screw (4) passes through the through hole (200) and one of the plurality of limiting holes (100), and passes through the other end of the wire lock member (2) to be threadedly connected with one of the torque nuts (5).

2. The insulator wire tightening and fixing device according to claim 1, characterized in that: The upper locking ring (11) includes an upper arc-shaped portion (111) and an upper connecting portion (112), one end of the upper arc-shaped portion (111) is rotatably connected to the first locking screw (3), and the other end is connected to the upper connecting portion (112), and a plurality of limiting holes (100) are provided on the upper connecting portion (112).

3. The insulator wire tightening and fixing device according to claim 2, characterized in that: The upper arc-shaped portion (111) and the upper connecting portion (112) are integrally arranged.

4. The insulator wire tightening and fixing device according to claim 2, characterized in that: The lower locking ring (12) includes a lower arc-shaped portion (121) and a lower connecting portion (122), one end of the lower arc-shaped portion (121) is rotatably connected to the first locking screw (3), and the other end is connected to the lower connecting portion (122), the through hole (200) is provided on the lower connecting portion (122), and an elliptical area for clamping the insulator (300) is formed between the upper arc-shaped portion (111) and the lower connecting portion (122).

5. The insulator wire tightening and fixing device according to claim 4, characterized in that: The lower arc-shaped portion (121) and the lower connecting portion (122) are integrally arranged.

6. The insulator wire tightening and fixing device according to claim 1, characterized in that: A rotating rod (6) is provided on the second locking screw (4).

7. The insulator wire tightening and fixing device according to claim 1, characterized in that: A groove (21) for embedding the wire (400) is provided in the middle of the lower end of the wire lock member (2).

8. The insulator wire tightening and fixing device according to claim 1, characterized in that: A protective cover (7) is clamped on the upper end of the wire lock member (2).

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