Electric operating mechanism of breaker

Abstract

The invention discloses an electric operating mechanism of a breaker. The electric operating mechanism comprises a box, a motor is arranged on one side of the box, and a rotor shaft of the motor extends into the box; a worm, a worm wheel, a reduction gear set and an output shaft are sequentially arranged in the box; the rotor shaft is in transmission connection with the worm through a deltoid body; the worm is meshed with the worm wheel; the worm wheel is meshed with the reduction gear set; the reduction gear set is in transmission connection with the output shaft, and the two ends of the worm are both fixed in the box in the radial direction through bearings. According to the electric operating mechanism of the breaker, the two ends of the worm are both fixed in the box in the radial direction through the bearings, bearing holes in the two ends of the worm are formed in the same box, so the bearing holes can be easily machined in a concentric mode; the worm and the rotor shaft are independent relative to each other and are connected through the deltoid body, so the meshing center distance of the worm and the worm wheel can be well guaranteed, transmission reliability is enhanced, the meshing efficiency of the worm wheel and the worm is improved, and the service life of the worm wheel and the worm is prolonged; abnormal noise is reduced, and machining and assembling are convenient.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to an electric operating mechanism of the circuit breaker. Background technique [0002] In circuit breaker switches of power distribution appliances, electric operating mechanisms are often required, see figure 1 as shown, figure 1 It is a structural schematic diagram of an existing electric operating mechanism of a circuit breaker, which includes a motor 10, a motor rotor shaft 11, a worm 12, a sliding bearing 13, a worm wheel 14, a reduction gear set 15 and an output shaft 16, and the motor rotor shaft 11 passes through the pin 17 transmits the power to the worm 12, and then transmits the power to the reduction gear set 15 through the worm gear 14, and then outputs it to the main shaft of the circuit breaker through the output shaft 16, but the installation space for such an operating mechanism is often very limited, so the rotor shaft of the motor is usually It is thinner, but the worm is ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a circuit breaker electric operating mechanism, which has the characteristics of high transmission efficiency, long service life, easy processing and assembly and low noise, so as to solve the above-mentioned problems existing in the circuit breaker electric operating mechanism in the prior art

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