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 plum blossom contacts of the handcart switch, it needs to be disassembled and installed on the movable contact arm; the traditional method of disassembling and assembling the plum blossom contacts is to press hard on the front of the contact At the same time, it overcomes the tightening force of the tension spring at the rear end to spread the contacts, and completes the disassembly and assembly by prying off the spring on the plum blossom (bundle spring type) contact. This process requires the cooperation of multiple people at the same time, and the process is cumbersome and construction The strength is high, time-consuming and labor-intensive, especially the plum blossom contacts above 2500A are more difficult to disassemble. Or due to improper cooperation of personnel, it is easy to cause the plum blossom contacts to fall apart and the spring to be damaged and fatigued. The contact is scattered and deformed or the spring is damaged and fatigued, which directly affects the reliable connection of the conductive parts, and there is a great potential safety hazard in equipment operation.

In view of the deficiencies in the traditional disassembly and assembly process of plum blossom contacts, as well as the difficulties in the disassembly and assembly of plum blossom contacts of different specifications, there is an urgent need for a special disassembly tool for plum blossom contacts, which can effectively shorten the working time required for disassembly and assembly and improve work efficiency. , and effectively eliminate the possibility of deformation or damage to the contacts

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