Special dismounting tool for portable plum blossom contact

Abstract

The invention relates to a special dismounting tool for a portable plum blossom contact. The special dismounting tool comprises a hollow handle seat, a pushing assembly and a linkage supporting rod assembly, wherein the pushing assembly is rotatably connected with a rear part of the handle seat, the linkage supporting rod assembly is rotatably connected with the front part of the handle seat and is used for supporting the plum blossom contact, the pushing assembly comprises a hand wheel and a screw, the screw horizontally penetrates through the handle base, an outer ring of the middle sectionof the screw is sleeved with a thrust bearing, the thrust bearing is fixed in the handle base, a front end of the screw extends outwards to penetrate out of the handle base, a rear end of the screw isfixedly connected with a hand wheel, the linkage supporting rod assembly comprises a movable base connected with a front end of the screw rod penetrating out of the handle seat, a plurality of frontsupporting rods and a plurality of rear supporting rods, the front supporting rods and the rear supporting rods are arranged in the circumferential direction of the screw rod in a front-back staggeredmode, and a positioning block is arranged on the screw rod between the movable seat and the end of the handle seat and abuts against the handle seat.

Description

technical field [0001] The invention specifically relates to a special disassembly and assembly tool for portable plum-blossom contacts, which belongs to the technical field of disassembly devices for electric equipment. Background technique [0002] 35kV and below KYN switchgear handcart switch is an important equipment in the substation, and the number is large. The plum blossom contact is the connection device between the moving contact arm and the static contact of the KYN switchgear handcart switch; the plum blossom contact is arranged in the circumferential direction. Composed of multiple contact petals, skeletons and springs, the block on the inner side of the plum blossom contact petal cooperates with the annular slot of the moving contact arm of the handcart switch to realize the connection with the moving contact arm, and the other end of the plum blossom contact is inserted into the static contact. Realize the conductive connection, and then play the role of conne...

AI Technical Summary

Problems solved by technology

[0002] 35kV and below KYN switchgear handcart switch is an important equipment in the substation, and the number is large. The plum blossom contact is the connection device between the moving contact arm and the static contact of the KYN switchgear handcart switch; the plum blossom contact is arranged in the circumferential direction. Composed of multiple contact petals, skeletons and springs, the block on the inner side of the plum blossom contact petal cooperates with the annular slot of the moving contact arm of the handcart switch to realize the connection with the moving contact arm, and the other end of the plum blossom contact is inserted into the static contact. Realize the conductive connection, and then play the role of connecting the current. The performance of the plum blossom contact and the contact strength with the moving contact arm and the static contact directly affect the operation performance of the product; Improper operation causes the handcart switch to overturn, resulting in damage to the static contact, high-voltage testers testing the loop resistance test clip, and the current clamp clamped on the spring, causing spring aging, and maintenance personnel traditionally disassembling and repairing the plum blossom contact with a screwdriver to pry the spring, causing damage to the spring, etc. Due to various factors, it is necessary to replace the plum blossom contacts in time, otherwise it will directly affect the safe and stable operation of the handcart switch

[0003] There are 400A ~ 4000A series of plum blossom contacts. When repairing or replacing the

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