Special tool for on-column switch live lap joint

Abstract

The invention discloses a special tool for live lapping of a switch on a pole, which comprises a top plate, a bottom plate, and a side plate connected between the top plate and the bottom plate. The side plate is a U-shaped plate, including two parallel flat plates and an arc-shaped plate. One end of the two flat plates is connected to the other end of the arc-shaped plate to form an opening connecting the accommodating chamber and the outside world. The first installation groove and the second installation groove through which the lead pile head passes, the orientation of the notch of the first installation groove and the second installation groove is the same as the orientation of the opening of the side plate, and the top plate is provided with a positioning protrusion and a shielding first The shielding cover above the installation groove is provided with a positioning groove communicating with the accommodation cavity on the positioning protrusion. The invention realizes effective insulation and shielding of the upper lead pile head through the accommodation cavity formed by the top plate, the bottom plate and the side plate, and can complete the wiring board Phase isolation, simple and convenient operation.

Description

technical field [0001] The invention belongs to the field of electrical equipment, and in particular relates to a special tool for live lapping of switches on poles. Background technique [0002] In the industry expansion project, there are mainly drop-out fuse lapping and pole-mounted switch lapping methods, in which the distance between the adjacent upper lead pile heads of the pole-mounted switch is relatively short, and the distance between adjacent upper lead pile heads is relatively short. If it does not meet the requirements of live work, it is necessary to take insulation and isolation measures between the upper lead pile heads of different phases. The upper lead pile head includes a terminal board and a clamping piece that clamps the lead wire with the terminal board. The clamping piece is connected by screws and nuts. The clamping piece is fixed on the terminal board, and the end of the terminal board away from the clamping piece is provided with a vertically upwar...

AI Technical Summary

Problems solved by technology

[0004] Disadvantage 1. When the insulating blanket wraps the pile head of the upper lead wire from bottom to top, it is required to wrap the upper pile head tightly and fix it firmly. Because the height of the switch on the pole is high, it needs to be operated by both hands, which is difficult to operate and has staff running away. danger of entering the circuit

[0005] Disadvantage 2: When the insulation blanket is used to insulate and shield the upper lead pile head of the switch on the column, the edge of the jumper tube and the insulation blanket must overlap by more than 15cm, and the judgment of the size of the overlapping part needs to be determined by the experience of the operator, which has certain advantages. Occasionally, the job needs to be repeated many times

[0006] Disadvantage 3. Because there are 8 screws and nuts and a vertical upward protrusion installed on the top lead pile head of the switch on the pole, the corners of the top lead pile head of the pole switch are relatively sharp, and the insulation blanket mainly uses It is a soft material, which is prone to wear or damage. The wear or damage of the insulation blanket will reduce the creepage distance of the needle during use, and flashover along the surface will occur. In severe cases, it will cause a relative short circuit.

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