A spring removal device for a power circuit breaker and a method for using the same

Abstract

The invention relates to a usage method of applying a power circuit breaker spring dismounting device, and the spring dismounting device comprises two seesaws, a support bar and an adjusting rod. A pointed blade head is installed on the front end of each seesaw; a U-shaped groove is installed at the central section of the front end of each seesaw; a first through hole is installed in each seesaw; a shaft rod is installed at the rear end of each seesaw; a first outside thread is installed at the tail end of each shaft rod; the support bar comprises a screw rod, a preload nut, a compression spring, a bulb slide block and a bulb nut; the adjusting rod comprises joint shaft heads installed on the shaft rods and a connective bar movably connected between two joint shaft heads; the joint shaft heads comprise inner rings, outer rings and connecting rods; and spacing nuts for restricting the joint shaft heads are installed on the first outside threads at the tail ends of the shaft rods. The adjusting rod and the support bar can be used continuously when a great inclined angle is formed between the seesaws and the adjusting rod and the support bar, thereby increasing the adjusting scope substantially.

Description

technical field [0001] The invention relates to the technical field of power circuit breakers, in particular to a spring removal device for a power circuit breaker and a method for using the same. Background technique [0002] In recent years, switches with spring-type operating mechanisms have become more and more common in the field of power systems. This type of switch has a complex structure, and it is difficult to replace some parts, among which the disassembly of the spring is the most difficult. Due to the compact design, the space of the mechanism box is narrow and there is no force point to stretch the spring. It takes time and effort to disassemble the spring, and it is even impossible to disassemble the spring. In the past, the maintenance personnel disassembled the spring by inserting a certain number of gaskets into the spring and propping the spring to a certain length. The spring is removed, but this method will cause uneven force on the inner and outer sides ...

AI Technical Summary

Problems solved by technology

Due to the compact design, the space of the mechanism box is narrow and there is no force point to stretch the spring. It takes time and effort to disassemble the spring, and it is even impossible to disassemble the spring. In the past, the maintenance personnel disassembled the spring by inserting a certain number of gaskets into the spring and propping the spring to a certain length. The spring is removed, but this method will cause uneven force on the inner and outer sides of the spring. When disassembling the spring, the gasket may pop out and hurt people if you do not pay attention to it. The safety factor is low, and this method is time-consuming. The time to remove the spring is longer than replacing the damaged parts. longer time

[0003] The application date is 2014.03.23, and the patent document with the application number 201420130695.0 discloses a new type of auxiliary tool for energy storage spring disassembly and assembly, including two seesaws, a rotating rod and a support rod. The front end of the seesaw is provided with a flat cutting edge and a U-shaped opening to facilitate insertion into the gap when the spring is not storing energy. The rear end of the seesaw is provided with a screw cap integrated with the seesaw. The upper part of the rotating rod is in the same direction as the screw cap of the upward rocker. The wire direction of the lower part of the rotating rod is the same as that of the screw cap of the lower rocker, and the wire direction of the upper part is opposite to that of the lower part. The support rod forms a fulcrum connection to the middle positions of the upper and lower rockers. There are adjusting nuts at both ends of the support rod, which can be adjusted The length of the support rod is adapted to springs of different lengths, but the tool still has a problem: when the distance between the upper and lower rockers is adjusted through the rotating rod, when the angle of inclination is generated between the rotating rod and the upper and lower rockers , there is interference between the rotating rod and the upper and lower rocker nuts so that the adjustment cannot be continued, and there will also be interference between the support rod and the upper and lower rockers so that the adjustment cannot be continued. The adjustment range of this device is very limited

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