Operating mechanism and its locking device

Abstract

The invention discloses an operating mechanism and a locking device thereof. The rigid locking part of the locking device is movably assembled on the tripping bracket for blocking and avoiding in the swing direction of the unlocking position of the latch swing arm when the latch swing arm is in the locked position, and on the tripping bracket There is an anti-escape structure for preventing the locking member from disengaging from the latch swing arm when the locking member blocks the latch swing arm, and the locking member is provided with a switch for switching the locking member from blocking and avoiding the latch swing arm. force structure. When the latch is in the locked position, the locking member can block and avoid the swing arm of the latch to realize the limit and avoidance of the swing arm of the latch, which plays the role of insurance before the swing arm of the latch swings. In this way, the anti-mistouch function of the tripping device during use is increased, the idle safety of the tripping device is ensured, and the locking function of the opening and closing action of the entire operating mechanism is also maintained.

Description

technical field [0001] The invention relates to an operating mechanism and a locking device thereof. Background technique [0002] At present, the closing and tripping device in the operating mechanism of an ordinary circuit breaker is mainly composed of a closing and tripping pawl, a closing latch and a closing electromagnet. The latch swing arm of the closing latch passes through the top of the closing electromagnet. Push and rotate on the frame to realize the limit of the closing and tripping detent in the state of energy storage and the release of the limit of the closing and tripping detent in the closing state. The existing closing and tripping device can be divided into two types according to the different structures of the closing latch, one is the closing and tripping module disclosed in Chinese patent document 201220001606.3, the new spring operating mechanism, and the other is such as The opening and closing device disclosed in Chinese patent document 20122073525...

AI Technical Summary

Problems solved by technology

The locking function of the existing isolated circuit breaker is realized in the transmission system of the circuit breaker, and has no connection with the operating mechanism; button, but the closing latch of the mechanism is not limited. After the button of the closing electromagnet is subjected to abnormal impact, vibration or accidental touch, the closing latch will still move toward the opening and closing release detent. direction rotation, resulting in closing and tripping, the energy storage wheel rotates slightly with the output cam at a certain angle under the drive of the spring. Closed, but the closing trip catch of the spring operating mechanism has been released, and the gap size of the output cam has been destroyed. Once the locking function of the locking device in the circuit breaker body is released, the isolated circuit breaker will be closed immediately and suddenly. Action, so that the closing action of the isolated circuit breaker is too fast and the closing characteristics cannot meet the technical requirements, so that the closing action of the isolated circuit breaker has a greater safety hazard

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