Permanent-magnetic vacuum one-way switch

Abstract

The invention relates to a permanent-magnetic vacuum one-way switch. The permanent-magnetic vacuum one-way switch comprises a shell, a vacuum breaker and a permanent-magnetic driving mechanism, wherein the vacuum breaker comprises a static contact end and a moveable contact end; the permanent-magnetic driving mechanism drives the moveable contact end to be closed with the static contact end; the permanent-magnetic driving mechanism comprises an insulator; the moveable contact end is sleeved with a reaction spring; the moveable contact end is in moveable fit with the insulator; and the permanent-magnetic driving mechanism drives the moveable contact end to be closed with the static contact end through the insulator. Because of the moveable fit between the moveable contact end and the insulator, a connecting rod is not required and the moveable contact end is in indirect connection with the insulator; during action, the permanent-magnetic driving mechanism drives the insulator to move and the insulator presses against the moveable contact end to make the moveable contact end move along with the insulator, so that the moveable contact end is closed with the static contact end; the movement resistance caused by the rustiness of the connecting rod is avoided; in a wet underground environment, the using safety can be also ensured; moreover, the moveable fit enables the moveable contact end and the static contact end to be concentrically aligned with each other automatically, so that the contact during the closure is complete and sufficient.

Description

technical field [0001] The invention relates to a permanent magnet vacuum one-way switch. In particular, it is a permanent magnet vacuum one-way switch suitable for power line control, multi-channel output and protection in underground coal mines. Background technique [0002] 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. [0003] 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 a permanent magnet mechanism. The insulator is provided with a guide...

AI Technical Summary

Problems solved by technology

[0004] 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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