A mechanical interlock device for air circuit breaker

Abstract

The invention discloses a mechanical interlocking device applied to an air breaker, which structurally comprises a breaker, a secondary loop, a protecting cover, a mechanical interlocking device, a second breaker, a lock catch, and a signal lamp; the breaker is a rectangular block, and the outer part sleeves with the protecting cover; the secondary loop is mounted at the upper part of the breaker,and the protecting cover is a concaved shape and its inner part is provided with the breaker; the mechanical interlocking device is fixed at the front part of the breaker and connected with a lead ofan external motor, and the second breaker is arranged at the left end face of the breaker, its shape and dimension are equal to that of the breaker; the lock catch is fixed between the breaker and the second breaker and the connection is locked; the signal lamp is mounted at the lower part of the breaker and electrically connected. The mechanical interlocking device has the beneficial effects that the mechanical interlocking device of the air breaker can apply a ball method so that the overall connection is tight and not easy to release; the breaker cannot be closed for the gravity principleat the same time; the mechanical interlocking device is strong in practicability, high in safety performance, and convenient to use.

Description

technical field [0001] The invention relates to a mechanical interlocking device for an air circuit breaker, which belongs to the field of mechanical interlocking devices for an air circuit breaker. Background technique [0002] Air switch, also known as air circuit breaker, is a kind of circuit breaker. It is a switch that will automatically disconnect as long as the current in the circuit exceeds the rated current. The air switch is a very important electrical appliance in the low-voltage power distribution network and electric drive system. It integrates control and multiple protection functions. In addition to completing the contact and breaking of the circuit, it can also protect the short circuit, severe overload and undervoltage caused by the circuit or electrical equipment, and it can also be used to start the motor infrequently. There are three types of tripping methods: thermal tripping, electromagnetic tripping and compound tripping. When the line is generally ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a mechanical interlocking device for air circuit breakers to solve the problem of the general use of cables to connect, the connection relationship is not tight and the parts are not sensitive after long-term use, which is easy to trip and cause danger. , its security is not high, and it is inconvenient to use

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