Pin remover for live replacement of 220kV suspension insulator string

A technology of hanging insulators and live replacement, which is applied in the field of electric power, and can solve the problems of large rebound force of W-shaped spring pins, inability to effectively fix W-shaped spring pins, and unguaranteed success rate.

Pending Publication Date: 2019-11-22

JINCHENG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER

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AI-Extracted Technical Summary

Problems solved by technology

[0006] In the actual operation of live replacement of 220kV suspension insulator strings, when the opening direction of the connecting bowl head is along the line direction, live workers usually use pin pullers to do the work, and the pin puller and the insulator string are mostly perpendicular to each other during operation. , which is at the same level as the W-shaped spring pin. Due to the influence of the blind area of vision and the aging and corrosion of the W-shaped spring pin during the operation, it is necessary to perform multiple tentative alignments before successfully inserting into the bowl head hanging plate. The upper and lower displacement deviation of the W-shaped spring pin cannot be controlled during other operations after the bowl head is hung with a large mouth. The operation stability is poor and the success rate cannot be guaranteed.

At the same time, when working live on site, the operator is at a high place and must always keep a safe distance between the human body, insulating tools and the live body. Due to the small movement range of the operator and the limited space for movement, it is often difficult to remove the W-shaped spring pin smoothly and effectively. You can only use the insulating operating rod to "poke and knock" the W-shaped spring pin in the groove of the insulator steel cap, single-joint bowl head or metal end, and the W-shaped spring pin cannot be effectively fixed by the pin puller during installation. During the extension and operation of the operating lever, it is very easy to cause the W-shaped spring pin to fall off from the pin puller, and the success rate of picking and installing the W-shaped spring pin is less than 50%.

Mainly: the direction of the large mouth of the bowl head hanging plate is in the blind area of human vision, so you can only rely on groping and trying; the pressure equalizing ring is just above the bowl head, which hinders the operation and affects the vision; only when the insulating operating rod is k...

Method used

[0048] The present invention creatively changes the improvement of the pin remover itself in the prior art into a method that does not need to remove the pin, so as to achieve the purpose of fast installation ...

Abstract

The invention belongs to the technical field of electric power, and particularly relates to a pin remover for live replacement of a 220kV suspension insulator string, which is provided with an anti-collision rod (20), a connecting bolt (21), a main rod (22), a first connecting rod (23), a third connecting rod (24), a second connecting rod (25), a collision head (26), an arc connecting rod (27), afourth connecting rod (28) and a wide plate (29). According to the invention, the problem of low efficiency of live replacement of 220kV suspension insulator strings in the prior art is mainly solved.The pin remover has the following main beneficial technical effects: the 220kV suspension insulator string is quickly replaced in an electrified manner, so that the repair time is saved, the workingtime of workers is shorter, the labor intensity is lower, and the safety is higher; therefore, the power supply is more timely, and the power supply efficiency and the repair rate are higher.

Application Domain

Apparatus for overhead lines/cables

Technology Topic

EngineeringRepair time +5

Image

Examples

Experimental program(5)

Example Embodiment

[0032] Implementation example 1

[0033] Please see image 3 , A pin remover 2 for live replacement of 220kV suspension insulator string, with anti-collision rod 20, connecting bolt 21, main rod 22, first link 23, third link 24, second link 25, striker 26, Arc connecting rod 27, fourth connecting rod 28, wide plate 29; one end of connecting bolt 21 is fixedly connected to one end of main rod 22, the outside of connecting bolt 21 has an external thread, and the other end of main rod 22 is fixedly connected to one end of first connecting rod 23 , The other end of the main rod 22 is fixedly connected to one end of the third link 24, the other end of the main rod 22 is fixedly connected to one end of the second link 25, the main rod 22 and the third link 24 are arranged coaxially, and the first link 23 and The second connecting rod 25 is arranged coaxially, the first connecting rod 23 and the second connecting rod 25 are respectively located on both sides of the main rod 22, the first connecting rod 23 is perpendicular to the main rod 22, and the ram 26 is connected to the first At the other end of the second link 25, the ram 26 has a cylindrical structure and is perpendicular to the second link 25, the ram 26 is vertically bisected by the second link 25, and the wide plate 29 is connected to the other end of the third link 24 , The width of the wide plate 29 is greater than the outer diameter of the third connecting rod 24, the wide plate 29 is bent in a flat shape; one end of the arc-shaped connecting rod 27 is fixedly connected to the third connecting rod 24, and the third connecting rod 24 is connected to the arc The connecting point of the rod 27 is close to one end of the third connecting rod 24, the other end of the arc-shaped connecting rod 27 is bent upward to form an arc, and one end of the fourth connecting rod 28 is fixedly connected to the end near the first connecting rod 23. The other end of the connecting rod 28 is fixedly connected to the end close to the arc-shaped connecting rod 27, the fourth connecting rod 28 is perpendicular to the first connecting rod 23 and parallel to the third connecting rod 24, and the axis of the arc-shaped connecting rod 27 is in the same plane as The third link 24 has a vertical axis. One end of the anti-collision rod 20 is fixed near the other end of the third link 24. The anti-collision rod 20 is perpendicular to the third link 24 and parallel to the first link 23. The anti-collision rod 20 Located between the arc-shaped connecting rod 27 and the wide plate 29; the anti-collision rod 20, the connecting bolt 21, the main rod 22, the first connecting rod 23, the third connecting rod 24, the second connecting rod 25, the impact head 26, The arc connecting rod 27, the fourth connecting rod 28, and the wide plate 29 are all made of metal and welded into an integrated structure.

Example Embodiment

[0034] Implementation example 2

[0035] Please see Figure 4 , A pin remover 2 for live replacement of 220kV suspension insulator string, with connecting bolt 21, main rod 22, first connecting rod 23, third connecting rod 24, second connecting rod 25, striker 26, arc connecting rod 27 , The fourth connecting rod 28, the wide plate 29; one end of the connecting bolt 21 is fixedly connected to one end of the main rod 22, the outside of the connecting bolt 21 has an external thread, the other end of the main rod 22 is fixedly connected to one end of the first connecting rod 23, and the other end of the main rod 22 One end is fixedly connected to one end of the third link 24, the other end of the main rod 22 is fixedly connected to one end of the second link 25, the main rod 22 and the third link 24 are coaxially arranged, and the first link 23 and the second link 25 Coaxially arranged, the first link 23 and the second link 25 are respectively located on both sides of the main rod 22, the first link 23 is perpendicular to the main rod 22, and the ram 26 is connected to the second link 25 At the other end, the striking head 26 is cylindrical and perpendicular to the second connecting rod 25. The striking head 26 is vertically bisected by the second connecting rod 25. The wide plate 29 is connected to the other end of the third connecting rod 24. The width is greater than the outer diameter of the third connecting rod 24, and the wide plate 29 is curved and flat; one end of the arc-shaped connecting rod 27 is fixedly connected with the third connecting rod 24, and the third connecting rod 24 is close to the arc connecting rod 27 One end of the third link 24 and the other end of the arc-shaped link 27 are bent upward to form an arc, one end of the fourth link 28 is fixedly connected to the end close to the first link 23, and the other end of the fourth link 28 One end is fixedly connected to the end close to the arc connecting rod 27, the fourth connecting rod 28 is perpendicular to the first connecting rod 23 and parallel to the third connecting rod 24, and the axis of the arc connecting rod 27 lies in the plane of the third connecting rod 24 The vertical axis, the connecting bolt 21, the main rod 22, the first link 23, the third link 24, the second link 25, the ram 26, the arc link 27, the fourth link 28, and the wide plate 29 are all made of metal and welded into an integrated structure.

Example Embodiment

[0036] Implementation example 3

[0037] Please see Figure 5 , A pin remover 2 for live replacement of 220kV suspension insulator string, with connecting bolt 21, main rod 22, first connecting rod 23, third connecting rod 24, second connecting rod 25, striker 26, arc connecting rod 27 , Wide plate 29; one end of the connecting bolt 21 is fixedly connected to one end of the main rod 22, the outside of the connecting bolt 21 has an external thread, the other end of the main rod 22 is fixedly connected to one end of the first connecting rod 23, and the other end of the main rod 22 is connected to the third connecting rod One end of 24 is fixedly connected, and the other end of the main rod 22 is fixedly connected to one end of the second connecting rod 25. The main rod 22 and the third connecting rod 24 are arranged coaxially, and the first connecting rod 23 and the second connecting rod 25 are arranged coaxially. The connecting rod 23 and the second connecting rod 25 are respectively located on both sides of the main rod 22, the first connecting rod 23 is perpendicular to the main rod 22, the striking head 26 is connected to the other end of the second connecting rod 25, the striking head 26 It has a cylindrical structure and is perpendicular to the second connecting rod 25. The ram 26 is vertically divided by the second connecting rod 25. The wide plate 29 is connected to the other end of the third connecting rod 24. The width of the wide plate 29 is larger than that of the third connecting rod. The outer diameter of 24, the wide plate 29 is bent flat; one end of the arc-shaped connecting rod 27 is fixedly connected to the third connecting rod 24, and the connection between the third connecting rod 24 and the arc-shaped connecting rod 27 is close to the third connecting rod 24 At one end, the other end of the arc-shaped connecting rod 27 is bent upward to form an arc, and the plane of the arc-shaped connecting rod 27 is perpendicular to the axis of the third connecting rod 24; the connecting bolt 21, the main rod 22, and the first connecting rod 23. The third connecting rod 24, the second connecting rod 25, the ram 26, the arc-shaped connecting rod 27, and the wide plate 29 are all made of metal and welded into an integrated structure.

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