Permanent magnet vacuum unidirectional switch and multifunctional composition switch provided with same

Abstract

The invention relates to a permanent magnet vacuum unidirectional switch and a multifunctional composition switch provided with the same. The permanent magnet vacuum unidirectional switch comprises a shell, a vacuum circuit breaker and a permanent magnet driving mechanism, wherein, the vacuum circuit breaker comprises a stationary contact end and a dynamitic contact end; the permanent magnet driving mechanism drives the stationary contact end and the dynamitic contact end to be closed, and comprises an insulator; a counter-force spring which drives the dynamitic contact end to move is sheathed on the dynamitic contact end; the dynamitic contact end is in clearance fit with the insulator, and is not directly connected with the insulator, the permanent magnet driving mechanism drives the stationary contact end and the dynamitic contact end to be closed through the insulator, and when in closing, the dynamitic contact end and the insulator can automatically find a concentricity, thus avoiding the problems such as abrasion, unequal contact surfaces and the like. By utilizing the composition switch, the closing and openness of a plurality of permanent magnet vacuum unidirectional switches can be combined and controlled, thus the composition switch has a breaker function, a contactor function, a contactor reversing function, a breaker and contactor function and a breaker and contactor reversing function, thus satisfying the requirements of electricity utilization of different equipment; and the adaptability is more comprehensive.

Description

technical field [0001] The invention relates to a one-way switch driven by a permanent magnet mechanism, in particular to a permanent magnet vacuum one-way switch. [0002] In addition, the present invention also relates to a multifunctional combined switch installed with the permanent magnet vacuum one-way switch. Background technique [0003] In the prior art, a contactor is used for an explosion-proof switch starter in a coal mine, and a circuit breaker is used for a feed switch. When the contactor and circuit breaker operate, they are divided into magnetic force and permanent magnet drive. It is composed of a magnetic driving mechanism driving a switch connecting rod or a connecting pull actuator. The starter feed switch is two switches with different purposes. [0004] The Chinese Invention Patent Authorization Announcement No. CN201256088Y, named "a circuit breaker", discloses a circuit breaker, including a switch tube, an insulator connected to the switch tube, and...

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Problems solved by technology

[0008] In order to solve the problems in the above-mentioned prior art solutions, the present invention provides a permanent magnet vacuum one-way switch, which directly designs the movable contact end of the insulator and the vacuum tube as a movable cooperation structure, and will not be closed due to the uneven contact surface of the vacuum tube. There are wear and tear problems, and the situation that the moving contact and the static contact cannot be completely closed

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