A Quick Positioning Assembly Tooling for the Output Shaft of a Circuit Breaker Magnetic Mechanism

Abstract

The invention relates to the technical field of breaker assembly tools, in particular to a quick positioning assembly tool for an output shaft of a magnetic mechanism of a breaker. A boss is arrangedon a breaker housing, and the assembly tool is arranged on the housing and comprises a barrel, wherein a groove matched with the boss and a through hole matched with the output shaft are formed in thebarrel; an output plate is arranged on the magnetic mechanism, and the output shaft penetrates the through hole to be fixedly connected with the output plate which is movably arranged in the assemblytool. The assembly tool can ensure that the well mounted output shaft is totally coaxial with a contact of the breaker, so that the output efficiency of the magnetic mechanism is increased, and the problem that normal output efficiency of the magnetic mechanism is affected by traditional free mounting is solved; mounting dimensions of the output shaft depend on positioning by the assembly tool, measurement is not needed, more accurate and standardized mounting position of the output shaft of each breaker is guaranteed, and the breaker is convenient to adjust.

Description

technical field [0001] The invention relates to the technical field of circuit breaker assembly tooling, and more specifically, relates to a quick positioning assembly tooling for an output shaft of a magnetic mechanism of a circuit breaker. Background technique [0002] Medium-voltage porcelain column circuit breakers are widely used in outdoor substation systems. The operating mechanisms used in circuit breakers include spring mechanisms, magnetic mechanisms, hydraulic mechanisms, and electric mechanisms. The output shaft of most mechanisms moves up and down and is separated from the interrupter chamber of the circuit breaker by a sealing ring. The output shaft is a key part connecting the mechanism and the insulating rod. The output shaft is smooth and moves up and down to ensure the sealing performance of the circuit breaker. [0003] At present, when installing the output shaft, most manufacturers install it freely and control it through the size of the parts. However, ...

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Problems solved by technology

[0003] At present, when installing the output shaft, most manufacturers install it freely and control it through the size of the parts. However, due to the existence of kinematic pairs and other reasons, some positions must be installed with gaps when installing the output shaft, which will cause The output shaft and the seal structure of the circuit breaker body and the insulating pull rod are not in the same axis: on the one hand, the output shaft and the seal structure generate a large friction force, which leads to a decrease in the output efficiency of the magnetic mechanism; on the other hand, the installation of the output shaft is slightly out of the insulation The pull rod is coaxial, which directly affects the increase of friction between the moving contact and the static contact, resulting in an increase in the load of the magnetic mechanism and affecting the mechanical characteristic curve of the circuit breaker

In addition, the installation size of the output shaft needs to be measured with a measuring tool during the installation of the circuit breaker. Due to structural limitations, the measurement is very inconvenient, and there are certain human errors in the measurement with the measuring tool, which leads to the mechanical characteristics of each circuit breaker. Not the same, bring trouble to the manufacturer's debugging

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