Welding fixtures for load switch or circuit breaker housing assemblies

Abstract

The invention relates to a welding tooling for a load switch or breaker casing assembly. The welding tooling comprises positioning units, wherein each positioning unit comprises a pair of positioning mounting seats which are coaxially and fixedly assembled on two electrode mounting holes oppositely formed in corresponding casings; positioning rods are coaxially erected on the pair of positioning mounting seats; front and back limit steps in stop matching with the corresponding mounting seats respectively to enable the positioning rods to be limited in axial movement are arranged on the positioning rods; a guide support plate is fixed between the front and back limit steps of each positioning rod; a positioning hole is formed in each guide support plate; a positioning shaft is coaxially assembled in the positioning holes; and a left cover plate positioning section and a shaft support poisoning section which are used for coaxially penetrating through drive shaft mounting holes in a left cover plate and a shaft support respectively are arranged on the left side and the right side of each positioning hole in the peripheral surface of the positioning shaft. The welding tooling for the load switch or breaker casing assembly can guarantee the coaxial assembly of the left cover plate and the shaft support.

Description

technical field [0001] The invention relates to a welding tool for load switch or circuit breaker housing assembly. Background technique [0002] The existing three-phase common box circuit breaker (or load switch) includes a shell assembly and three main circuit units arranged in it, and the specific structure of the shell assembly is as follows: Figure 1-8 As shown: the housing assembly includes a housing 2 whose length extends along the left and right directions, and each main circuit unit includes a moving end electrode, a static end electrode, and a moving conductive rod that realizes closing and opening of the moving and static end electrodes through reciprocating motion. A pair of electrode installation holes 4 are provided on the front and rear side plates of the casing for coaxial installation of the dynamic and static electrodes respectively. A left cover plate 1, a shaft bracket and a right cover plate are arranged at intervals along the left and right directions...

AI Technical Summary

Problems solved by technology

Since the three-phase common tank circuit breaker adopts the three-phase common tank arrangement, the axial dimension of the shell is relatively long, which brings great difficulties to welding. It is difficult to ensure the welding dimensions of each component of the product, and the large deviation of welding dimensions will lead to subsequent assembly. Difficulties or even shell scrapping, affecting production progress

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