Chassis truck manual/electric operation interlocking mechanism installed on breaker chamber door

Abstract

A chassis truck manual / electric operation interlocking mechanism installed on a circuit breaker chamber door comprises a circuit breaker chamber, a lead screw mechanism for driving a circuit breaker chassis truck to move longitudinally is arranged in the circuit breaker chamber, and an operation handle is further arranged in a matched mode. A longitudinal transmission shaft is rotatably mounted onthe circuit breaker chamber door; the circuit breaker chamber door is also provided with an electric driving mechanism for driving the longitudinal transmission shaft to rotate; an interlocking control mechanism is further arranged and comprises a transverse moving part, a longitudinal moving part, a reset spring, a sleeve, a right-angled locking plate, a padlock and a microswitch. The circuit breaker of the old-fashioned switch cabinet can be driven in an electric mode, the interior of the cabinet body does not need to be transformed, and the reliable locking relation can be achieved in a manual mode and an electric mode.

Description

technical field [0001] The invention belongs to the technical field of power switch cabinets, and in particular relates to a manual / electrically operated interlocking mechanism of a chassis mounted on a circuit breaker chamber door. Background technique [0002] The armored removable switchgear is equipped with a circuit breaker room, the circuit breaker room is equipped with a circuit breaker room door, and a circuit breaker is installed in the circuit breaker room. The circuit breaker is installed on the chassis and moves longitudinally with the chassis; the circuit breaker moves to Different functions can be realized in different vertical positions. The switchgear is also provided with a screw mechanism that drives the chassis of the circuit breaker to move longitudinally. The axial direction of the screw of the screw mechanism is longitudinal, and the cross section of the front end of the screw is square. [0003] In the old-fashioned switch cabinets produced in the ear...

AI Technical Summary

Problems solved by technology

However, there are still a large number of old-fashioned switchgears that are in operation. They were only in manual mode when they left the factory, and there was no electric mode. If such old-fashioned switchgears are to be directly refitted inside the switchgear and add an electric mechanism that drives the screw, the following exist Difficulties: 1. If the electric mechanism for driving the screw rod is installed inside the cabinet, it is necessary to modify the inside of the circuit breaker room, which is difficult to modify, and there is a problem that the subject of quality assurance responsibility after the modification of the circuit breaker room is not clear (ie It is impossible to distinguish the responsibility of the original manufacturer or the responsibility of the refitter); 2. If the electric mechanism for driving the screw rod is set outside the door of the circuit breaker, the control mechanism is directly exposed on the outer surface of the door of the circuit breaker, and the circuit breaker is missing. The protection of the door allows unauthorized persons to directly change the functional position of the circuit breaker in manual mode and electric mode, or it is also possible to use remote control of the electric mode, resulting in conflicts between the two control modes of manual mode and electric mode. The function position control of the circuit breaker is chaotic, which may cause accidents in severe cases

For example, when the electric mode is enabled for electric operation, due to the lack of structural measures to prohibit the manual mode, it is still possible for unauthorized people to insert the operating handle into the front end of the screw rod for manual operation; During manual operation, it is also possible to accidentally press the button of the electric mode, or to start the electric mode through remote control; in addition, when it is necessary to prohibit the longitudinal position of the circuit breaker from being moved, there is still a lack of structural measures to prohibit the manual mode and the electric mode at the same time

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