Mounting fixture for arc extinguish chamber of vacuum breaker

Abstract

The invention relates to a mounting fixture for an arc extinguish chamber of a vacuum breaker. The mounting fixture comprises a base plate and side plates, wherein the side plates are fixed at two ends of the base plate; an upper bracket is arranged on the base plate; a locating pin is arranged on the upper bracket; one sides of the side plates are connected with a cylinder through spacer pins; one end of each spacer pin is connected with a pull rod; one end of the pull rod are connected with a lower bracket; and a concave positioning port and a convex positioning port, respectively corresponding to the convex side surface and the concave side surface of the lower bracket, are opened on the pull rods. By using the mounting fixture provided by the invention, the arc extinguish chamber and related components of the vacuum breaker can be very conveniently positioned and mounted, the operation is simple, after mounting, the plane, in which the lower bracket moves upwards and downwards, is ensured to be parallel to the plane, in which the upper bracket is located, the flexible connection is not influenced by external distortion force, the lower bracket can freely move upwards and downwards, and the integral stability of the breaker is improved.

Description

technical field [0001] The invention relates to the technical field of vacuum circuit breakers, in particular to a fixture for installing an arc extinguishing chamber of a vacuum circuit breaker. Background technique [0002] Vacuum circuit breakers are mainstream products in the field of medium voltage switches in power distribution systems. The arc extinguishing chamber is one of the core components of the vacuum circuit breaker. The installation of the arc extinguishing chamber and the upper and lower brackets is an important link in the assembly process of the vacuum circuit breaker. Whether the installation of the interrupter interrupter is reasonable or not directly affects the stability of the overall performance of the circuit breaker. After the arc extinguishing chamber is installed, it must meet the requirements that the lower bracket can move up and down on a plane parallel to the plane where the upper bracket is located and that the soft connection is not affecte...

AI Technical Summary

Problems solved by technology

Using manual or other mechanical structures to compress the arc extinguishing chamber, and visually positioning the upper end hole of the arc extinguishing chamber and the soft connection will cause the soft connection to rotate, making it difficult to guarantee the installation speed and accuracy, and may be damaged The internal structure of the arc extinguishing chamber

At the same time, since the arc extinguishing chamber and the upper and lower brackets are not positioned with the help of fixtures during installation, it is difficult to ensure the parallelism of the plane where the upper and lower brackets are located after the arc extinguishing chamber is installed and the soft connection of the lower bracket will not be affected by external twisting forces. It can move freely under the circumstances, and the stability of the overall performance of the circuit breaker is not high.

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