Miniature circuit breaker reclosure device with clutch function

Abstract

The invention relates to a miniature circuit breaker reclosure device with the clutch function. The miniature circuit breaker reclosure device with the clutch function comprises a handle device, a shaft sleeve stirring gear and a driving device. The handle device comprises a handle wheel body, and one side of the handle wheel body is provided with handle wheel body wheel teeth which are meshed with the shaft sleeve stirring gear. The driving device comprises a shaft sleeve sector gear and a driving motor, and the shaft sleeve sector gear and the shaft sleeve stirring gear are coaxially arranged. The miniature circuit breaker reclosure device is characterized by further comprising a shaft sleeve clutch key and a clutch bolt, the shaft sleeve sector gear is connected with the shaft sleeve stirring gear through the shaft sleeve clutch key, the clutch bolt is connected with a shell in a sliding mode, and the clutch bolt drives the shaft sleeve clutch key to do axial movement so that the shaft sleeve sector gear can be connected with or separated from the shaft sleeve stirring gear. The miniature circuit breaker reclosure device has the advantages that a switch can be manually or automatically switched during using so that the handle can be disengaged from power, and it can be ensured that a handle and a moving contact can reset in case of power failure during the automatic switching-on of a miniature circuit breaker.

Description

Technical field [0001] The invention relates to the technical field of remote control of small circuit breakers, in particular to a small circuit breaker reclosing device with a clutch function. Background technique [0002] According to the demand for intelligent power supply network in my country, the State Grid Corporation of China requires the power supply network to be intelligent. Therefore, the terminal actuator of the power supply network, the miniature circuit breaker, is required to execute the upper signal to have the functions of tripping and closing. The State Grid Corporation of China recently issued the "Technical Specifications for External Load Switches for Electric Energy Meters." The standard stipulates that there are six types of load switches according to the number of poles, among which, 1P+N is a two-pole load switch with a protective pole). The miniature circuit breaker is required to realize the reclosing function within 2P (36mm), and the short-circuit ...

AI Technical Summary

Problems solved by technology

However, strictly speaking, in the event of a power failure during the closing process of this product, the closing drive motor stops. Although the tripping drive device can reset the moving contact immediately, the handle of the miniature circuit breaker will still stop during the closing process. As a result, the switch can continue to be closed manually, but the handle cannot be manually reset, which confuses the maintenance personnel in the later stage and poses a safety hazard; and the static contact metal strip and the dynamic contact phosphor copper sheet in the N pole switch are both Arc-shaped structure, in the production process, the matching precision between the static contact metal strip and the dynamic contact phosphor copper sheet is high, and the processing technology is cumbersome, thus increasing the production cost

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