Manual energy storage device and circuit breaker

Abstract

The invention provides a manual energy storage device and a circuit breaker. The device comprises a mounting plate which is provided with a plurality of mounting hole positions; an energy storage shaft which is rotatably mounted on the mounting plate; a ratchet wheel which is connected to the energy storage shaft through a one-way bearing; two clamping plates which are arranged on the side, close to the mounting plate, of the ratchet wheel and the side, away from the mounting plate, of the ratchet wheel respectively, and are rotationally mounted on the energy storage shaft; a thrust pawl whihc is rotatably mounted between the two clamping plates through a first bolt; a limiting pawl which is rotatably arranged on the mounting plate through a fourth bolt; a connecting plate of which one end is rotatably connected to the clamping plates; a crank arm which is rotatably connected with the other end of the connecting plate; and a limiting pin which is arranged on the mounting plate. The technical problem to be solved by the invention is to overcome the defects of short service life and easy matching failure of a ratchet wheel and a thrust pawl caused by long-term operation.

Description

technical field [0001] The invention relates to the technical field of circuit breaker manual energy storage, in particular to a manual energy storage device and a circuit breaker. Background technique [0002] A circuit breaker is a mechanical switching device that can switch on and off the normal current of the carrying line, and can also switch on and off the carrying current under specified abnormal circuit conditions and within a certain period of time. When a serious overload, short circuit or undervoltage occurs on the line, it is necessary to immediately cut off the power supply to repair the equipment. At this time, the circuit breaker needs to store energy manually to provide energy for the closing operation. The energy storage of the circuit breaker is achieved by compressing the energy storage spring. The larger the energy storage spring, the greater the force required to compress it. It also means that the operator of the manual energy storage mechanism is used ...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the relative displacement between the thrust pawl and the ratchet ratchet teeth in the prior art, which will easily cause the wear of the ratchet teeth, and long-term operation will cause damage to the ratchet wheel and thrust pawl, making the machine use The defect of short life; and the long-term thrust of the energy storage shaft, the contact surface is prone to wear, resulting in bouncing during operation, so the relative position between the energy storage shaft and the thrust pawl changes, resulting in the thrust pawl and the thrust pawl. Failure of ratchet fit

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