CN211958570U

CN211958570U - Tool for replacing single insulator

Info

Publication number: CN211958570U
Application number: CN202020642540.0U
Authority: CN
Inventors: 孙玉诚; 张卫东; 严月玲; 王有德; 李涛; 王晓明
Original assignee: Training Center Of State Grid Qinghai Electric Power Co
Current assignee: Training Center Of State Grid Qinghai Electric Power Co
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-11-17
Anticipated expiration: 2030-04-24

Abstract

The utility model provides an instrument for changing monolithic insulator, this instrument includes: the clamping part is used for clamping and connecting with the single-chip insulator; the connecting parts are connected with the clamping parts and are respectively arranged on two sides of the clamping parts, and the connecting parts are used for being connected with the two wires in a one-to-one correspondence mode. Through the technical scheme that this application provided, can solve the problem of the monolithic insulator of being not convenient for change among the prior art.

Description

Tool for replacing single insulator

Technical Field

The utility model relates to a transmission of electricity technical field particularly, relates to an instrument for changing monolithic insulator.

Background

At present, a porcelain insulator string of a power transmission line is formed by combining single insulators, is an important connecting and insulating part and can ensure an insulating gap between a lead and a tower. During operation, the single insulator may be degraded due to the influence of electrical, mechanical, environmental and other factors, and must be replaced after being degraded.

In the prior art, the whole string of insulators is tied by a rope firstly when the deteriorated single-piece insulator is replaced in an electrified way, the whole string of insulators is completely dropped on the ground by pulling up the rope by manpower, then the deteriorated single-piece insulator is taken out, and after a new single-piece insulator is replaced, the whole string of insulators is pulled to a tower cross arm by manpower to complete the replacement task.

However, the above method has the following disadvantages: 1) most of the transmission line towers are located in mountains and mountains, the terrain is complex, and mechanical operation is difficult to adopt; 2) the transmission line has high voltage level and large lead mass, the design height of the tower is more than 30 meters on average, materials and tools are conveyed from the ground to the top of the tower through manpower, and the efficiency is low; 3) the weight of the whole insulator string to be replaced reaches more than 300 kg, and the insulator string can be placed and pulled up only by more than ten ground labors, so that more workers are needed, the labor intensity is higher, and the time and the labor are wasted. Therefore, the prior art has the problem that it is inconvenient to replace the single insulator.

SUMMERY OF THE UTILITY MODEL

The utility model provides an instrument for changing monolithic insulator to solve the problem of the monolithic insulator of being not convenient for change among the prior art.

The utility model provides an instrument for changing monolithic insulator, the instrument includes: the clamping part is used for clamping and connecting with the single-chip insulator; the connecting parts are connected with the clamping parts and are respectively arranged on two sides of the clamping parts, and the connecting parts are used for being connected with the two wires in a one-to-one correspondence mode.

Further, block portion includes fixed joint spare and activity joint spare, and activity joint spare detachably sets up on fixed joint spare, and fixed joint spare and activity joint spare cooperate in order to carry out the block to the monolithic insulator.

Furthermore, the fixed clamping piece comprises a first main body and two first connecting sections, the two first connecting sections are respectively arranged at two ends of the first main body, the two connecting parts and the two first connecting sections are arranged in a one-to-one correspondence manner, each connecting part is arranged at one end, far away from the first main body, of the corresponding first connecting section, and the first main body is of a semicircular structure; the movable clamping piece comprises a second main body and two second connecting sections, the two second connecting sections are respectively arranged at two ends of the second main body, the second main body is of a semicircular structure, and the second main body is buckled with the first main body.

Further, block portion still includes location structure, and location structure sets up between fixed joint spare and activity joint spare, and location structure is used for assembling the location to fixed joint spare and activity joint spare.

Furthermore, a first step structure is arranged on the end wall of the opening end of the first main body, a second step structure is arranged on the end wall of the opening end of the second main body, and the first step structure and the second step structure are clamped to form a positioning structure.

Further, the engaging portion further includes: the first connecting section is provided with a mounting hole, and the locking bolt penetrates through the mounting hole; the rotating shaft is connected with the locking bolt and is perpendicular to the locking bolt, and the rotating shaft penetrates through the second connecting section.

Further, the tool further comprises a limiting structure, the limiting structure is arranged on the clamping portion, and the limiting structure is used for limiting the relative position of the single-chip insulator and the clamping portion.

Further, limit structure includes spacing boss, and block portion has the joint hole, and spacing boss setting is on the pore wall in joint hole, and the joint hole is used for with the steel cap looks block of monolithic insulator, is provided with spacing recess on the lateral wall of steel cap, and spacing boss corresponds spacing recess setting.

Furthermore, connecting portion include third main part and safety pin, and the third main part has "U" type groove, and the wire is worn to establish in "U" type inslot, and the safety pin is worn to establish in the both sides of "U" type groove open end.

Further, the instrument still includes length adjusting bolt, and length adjusting bolt's one end is worn to establish on connecting portion, and length adjusting bolt's the other end is worn to establish in block portion.

Use the technical scheme of the utility model, this instrument includes block portion and two connecting portion, and connecting portion are connected with block portion, and two connecting portion set up the both sides in block portion respectively. When the deteriorated single-chip insulator is replaced, firstly, bearing force of the insulator string is transferred to the linear pull plate, then the clamping part is clamped and connected with the single-chip insulator below the deteriorated single-chip insulator of the insulator string, and finally, the two connecting parts are connected with the two wires in a one-to-one correspondence manner, so that the weight of the insulator string below the deteriorated single-chip insulator can be fixed on the wires in a high-altitude manner through the tool, replacement of the deteriorated single-chip insulator can be smoothly completed, the whole string of insulators does not need to be completely dropped to the ground, replacement of the single-chip insulator is facilitated, and replacement efficiency can be improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram illustrating a tool for replacing a single insulator according to an embodiment of the present invention;

fig. 2 shows another schematic structural diagram of a tool for replacing a single insulator according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a fastening part; 11. fixing the clamping piece; 111. a first body; 112. a first connection section; 12. a movable clamping piece; 121. a second body; 122. a second connection section; 13. locking the bolt; 14. a rotating shaft; 15. a clamping hole; 20. a connecting portion; 21. a third body; 211. a U-shaped groove; 22. a shear pin; 23. lifting lugs; 30. a positioning structure; 31. a first step structure; 32. a second step structure; 40. a limiting structure; 41. a limiting boss; 50. a length adjustment bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a tool for replacing a single insulator, which includes a fastening portion 10 and two connecting portions 20. The clamping part 10 is used for clamping and connecting with the single insulator to realize the fixed connection between the tool and the insulator string. Specifically, the connecting portion 20 is connected to the engaging portion 10, the two connecting portions 20 are respectively disposed on two sides of the engaging portion 10, and the two connecting portions 20 are used for being connected to two wires in a one-to-one correspondence manner. Since the engaging portion 10 is engaged with the single insulator, the insulator string can be hung on the conductor after being connected to two conductors in one-to-one correspondence by the two connecting portions 20.

By using the tool provided by the embodiment, when a deteriorated monolithic insulator is replaced, firstly, the bearing force of an insulator string is transferred to the linear pull plate, then the clamping part 10 is utilized to be clamped and connected with the monolithic insulator below the deteriorated monolithic insulator of the insulator string, and finally, the two connecting parts 20 are connected with the two wires in a one-to-one correspondence manner, because the two connecting parts 20 are respectively arranged at two sides of the clamping part 10, the weight of the insulator string below the deteriorated monolithic insulator can be fixed on the wires in a high-altitude manner through the tool, the replacement work of the deteriorated monolithic insulator can be smoothly completed, the whole string of insulators does not need to be completely dropped to the ground, the replacement of the monolithic insulator is facilitated, the labor is greatly saved, and the working efficiency is improved.

In this embodiment, the engaging portion 10 includes a fixed engaging member 11 and a movable engaging member 12, the movable engaging member 12 is detachably disposed on the fixed engaging member 11, and the fixed engaging member 11 and the movable engaging member 12 cooperate to engage with a single insulator. By arranging the engaging portion 10 as the fixed engaging member 11 and the movable engaging member 12, when the monolithic insulator is engaged, the engaging portion 10 is engaged with the monolithic insulator or the engaging portion 10 is detached from the monolithic insulator by adjusting the position of the movable engaging member 12 on the fixed engaging member 11.

Specifically, the fixing clip 11 includes a first body 111 and two first connection segments 112, the two first connection segments 112 are respectively disposed at two ends of the first body 111, the two connection portions 20 and the two first connection segments 112 are disposed in a one-to-one correspondence manner, each connection portion 20 is disposed at one end of the corresponding first connection segment 112, which is far away from the first body 111, and the first body 111 is of a semicircular structure. Specifically, the movable clip 12 includes a second body 121 and two second connecting sections 122, the two second connecting sections 122 are respectively disposed at two ends of the second body 121, the second body 121 is a semicircular structure, and the second body 121 is buckled with the first body 111. The semicircular second body 121 is engaged with the semicircular first body 111, so that the engaging portion 10 can form a circular engaging hole, and the single insulator can be engaged with the tool through the engaging hole.

In order to promote the assembly precision of activity joint spare 12 and fixed joint spare 11, block portion 10 still includes location structure 30, and location structure 30 sets up between fixed joint spare 11 and activity joint spare 12, and location structure 30 is used for assembling the location to fixed joint spare 11 and activity joint spare 12.

As shown in fig. 1, a first step structure 31 is disposed on an end wall of the open end of the first body 111, a second step structure 32 is disposed on an end wall of the open end of the second body 121, and the first step structure 31 and the second step structure 32 are engaged to form the positioning structure 30. Through setting up first stair structure 31 and second stair structure 32, when assembling movable joint spare 12 on fixed joint spare 11, first stair structure 31 and second stair structure 32 can block each other, and two stair structures can play the effect of positioning, can promote the assembly precision. In other embodiments, positioning structures such as positioning pins, positioning bosses or positioning grooves can be provided.

As shown in fig. 1, the engaging portion 10 further includes a lock bolt 13 and a rotating shaft 14. The first connecting section 112 has a mounting hole, the locking bolt 13 is inserted into the mounting hole, the rotating shaft 14 is connected to the locking bolt 13, the rotating shaft 14 is perpendicular to the locking bolt 13, and the rotating shaft 14 is inserted into the second connecting section 122. By adopting the structure, the locking bolt 13 is matched with the rotating shaft 14, so that the movable clamping piece 12 can be connected with the fixed clamping piece 11, and the movable clamping piece 12 can rotate relative to the fixed clamping piece 11 through the rotating shaft 14, so that clamping assembly is facilitated. In this embodiment, the engaging portion 10 further includes two locking bolts 13 and two rotating shafts 14, and the two locking bolts 13 and the two rotating shafts 14 are correspondingly disposed at two ends of the engaging portion 10 one by one, so that flexibility of the device can be further improved.

In this embodiment, two first connecting segments 112 are respectively provided with a mounting hole, and at least one mounting hole is a waist-shaped hole, so that when the movable clamping member 12 rotates relative to the fixed clamping member 11, the waist-shaped hole can provide a moving space, which is convenient for the movement of the movable clamping member 12.

In this embodiment, the tool further includes a limiting structure 40, the limiting structure 40 is disposed on the engaging portion 10, and the limiting structure 40 is used for limiting the relative position between the single-piece insulator and the engaging portion 10, so as to improve the clamping firmness and prevent the single-piece insulator from falling off from the engaging portion 10.

As shown in fig. 1, the limiting structure 40 includes a limiting boss 41, the engaging portion 10 has a engaging hole 15, the limiting boss 41 is disposed on the hole wall of the engaging hole 15, the engaging hole 15 is engaged with the steel cap of the monolithic insulator, a limiting groove is disposed on the outer side wall of the steel cap, and the limiting boss 41 corresponds to the limiting groove. The structure that the limiting boss 41 is matched with the limiting groove is utilized, the relative position of the single-chip insulator and the clamping part 10 can be limited, and the fixing structure has the advantages of being simple in structure and good in fixing effect. In other embodiments, a pin, a fastener, or the like may be provided between the engaging portion 10 and the single insulator for limiting.

As shown in fig. 2, the connecting portion 20 includes a third body 21 and a safety pin 22, the third body 21 has a "U" shaped groove 211, the conductive wire is inserted into the "U" shaped groove 211, and the safety pin 22 is inserted into two sides of an opening end of the "U" shaped groove 211. By arranging the U-shaped groove 211 on the third body 21, the lead can be conveniently arranged in the U-shaped groove 211 in a penetrating manner. Through wearing to establish the safety pin 22 in the both sides of "U" type groove 211 open end, can utilize safety pin 22 to seal the open end of "U" type groove 211, avoid the wire to deviate from in "U" type groove 211, can promote device's fixed effect.

In order to adjust the length of the tool, the tool further includes a length adjusting bolt 50, one end of the length adjusting bolt 50 is inserted into the connecting portion 20, and the other end of the length adjusting bolt 50 is inserted into the engaging portion 10. According to the distance between the two wires, the length size of the tool is adjusted by the length adjusting bolt 50, so that the tool is smoothly hung on the two wires, and the application range of the tool can be widened.

In this embodiment, the end of the connecting portion 20 away from the open end of the "U" shaped groove 211 is provided with the lifting lug 23, so that when it is inconvenient to hang a tool on a wire by using the "U" shaped groove 211 and the safety pin 22, the tool can be hung on other parts by the lifting lug 23, and the application range of the tool can be further increased.

The following description is made in conjunction with a specific use mode of the tool, for example, the operation steps when replacing the wire side 5 th deteriorated single insulator are as follows:

(1) firstly, transferring the bearing force of an insulator string to a linear pulling plate, then taking out a first insulator spring piece on the lead side by an equipotential electrician, and disconnecting the first insulator on the lead side from a duplex bowl head;

(2) a ground potential electrician ties a rope on every three insulator steel caps on the cross arm side, pulls the rope down in cooperation with ground personnel, transfers the weight of the insulator string to the rope, and can disconnect the first insulator on the cross arm side from the ball head hanging ring;

(3) slowly lowering the insulator string from the middle of the double split conductor until the conductor is flush with a fourth insulator shed and stopping the lowering, then loosening the locking bolts 13 on the two sides of the tool by an equipotential electrician, installing the fixed clamping piece 11 and the movable clamping piece 12 on a fourth insulator steel cap, then screwing the locking bolts 13, taking the safety pins 22 on the two sides of the tool, clamping the conductor into the U-shaped grooves 211 on the two sides of the tool, and then installing the safety pins 22;

(4) slowly lowering the insulator string again to transfer the weight of the first insulator to the fourth insulator on the lead side to the tool, then taking out the spring pins of the fourth insulator and the fifth insulator by an equipotential electrician, taking out the damaged first insulator, replacing a new insulator, recovering the spring pins of the fourth insulator and the fifth insulator, and finishing the replacement of the damaged fifth insulator;

(5) the steps of dismantling the tool and recovering the insulator string are opposite to the steps.

Through the device that this embodiment provided, when changing in the straight line insulating string certain slice damage (degradation) insulator in the electrification, can fix the insulator string weight below damaging the insulator on the wire through this instrument high altitude, accomplish and damage insulator change work, utilize this instrument not need with whole string insulator all to fall to ground, saved the manpower greatly, improved work efficiency, this instrument has stable in structure, convenient operation, portable, high-efficient laborsaving, safe advantage.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for replacing a monolithic insulator, the tool comprising:

the clamping part (10), the clamping part (10) is used for clamping and connecting with the single insulator;

the connecting parts (20) are connected with the clamping part (10), the connecting parts (20) are respectively arranged on two sides of the clamping part (10), and the connecting parts (20) are used for being connected with two wires in a one-to-one correspondence mode.

2. The tool according to claim 1, characterized in that the clamping portion (10) comprises a fixed clamping member (11) and a movable clamping member (12), the movable clamping member (12) is detachably arranged on the fixed clamping member (11), and the fixed clamping member (11) and the movable clamping member (12) cooperate to clamp the single insulator.

3. The tool of claim 2,

the fixed clamping piece (11) comprises a first main body (111) and two first connecting sections (112), the two first connecting sections (112) are respectively arranged at two ends of the first main body (111), the two connecting parts (20) and the two first connecting sections (112) are arranged in a one-to-one correspondence manner, each connecting part (20) is arranged at one end, far away from the first main body (111), of the corresponding first connecting section (112), and the first main body (111) is of a semicircular structure;

the movable clamping piece (12) comprises a second main body (121) and two second connecting sections (122), the two second connecting sections (122) are respectively arranged at two ends of the second main body (121), the second main body (121) is of a semicircular structure, and the second main body (121) is buckled with the first main body (111).

4. The tool according to claim 3, characterized in that the engaging portion (10) further comprises a positioning structure (30), the positioning structure (30) is disposed between the fixed clip member (11) and the movable clip member (12), and the positioning structure (30) is used for assembling and positioning the fixed clip member (11) and the movable clip member (12).

5. Tool according to claim 4, characterized in that the end wall of the open end of the first body (111) is provided with a first step structure (31) and the end wall of the open end of the second body (121) is provided with a second step structure (32), the first step structure (31) and the second step structure (32) being engaged to form the positioning structure (30).

6. Tool according to claim 3, characterized in that said snap-in part (10) further comprises:

the locking bolt (13), the first connecting section (112) is provided with a mounting hole, and the locking bolt (13) penetrates through the mounting hole;

the rotating shaft (14), the rotating shaft (14) with the locking bolt (13) is connected, the rotating shaft (14) is perpendicular to the locking bolt (13), and the rotating shaft (14) penetrates through the second connecting section (122).

7. The tool according to claim 1, further comprising a limiting structure (40), wherein the limiting structure (40) is arranged on the clamping part (10), and the limiting structure (40) is used for limiting the relative position of the single-piece insulator and the clamping part (10).

8. The tool according to claim 7, wherein the limiting structure (40) comprises a limiting boss (41), the clamping portion (10) is provided with a clamping hole (15), the limiting boss (41) is arranged on the hole wall of the clamping hole (15), the clamping hole (15) is used for clamping with a steel cap of the single-piece insulator, a limiting groove is arranged on the outer side wall of the steel cap, and the limiting boss (41) is arranged corresponding to the limiting groove.

9. The tool according to claim 1, characterized in that said connecting portion (20) comprises a third body (21) and a safety pin (22), said third body (21) having a "U" shaped groove (211), said wire being inserted in said "U" shaped groove (211), said safety pin (22) being inserted on both sides of the open end of said "U" shaped groove (211).

10. The tool according to claim 1, further comprising a length-adjusting bolt (50), wherein one end of the length-adjusting bolt (50) is inserted into the connecting portion (20), and the other end of the length-adjusting bolt (50) is inserted into the engaging portion (10).