Three-station isolation grounding switch operating mechanism of combined electrical appliance

Abstract

The invention relates to a three-station isolation grounding switch operating mechanism of a combined electrical appliance. A dividing device consisting of a dividing wheel, a dividing cam wheel and a movable key is sleeved on a worm wheel shaft close to one side of the output end; an electrical control device which consists of a dial sheet cam wheel, a dial pin cam wheel and a switch cam wheel and is matched with a guide plate in a dialing mode is sleeved at the outer end of the worm wheel shaft; the dial sheet cam wheel, the dial pin cam wheel and the gradient cam wheel are connected synchronously; and the dividing wheel and the worm wheel shaft are connected synchronously; and the rotation direction of a motor is controlled by two electromagnetic coils. The mechanism provided by the invention is inventive in design, is simple in structure, is reliable in action, is small in appearance and is light in weight; the mechanism is applied to 10kV-220kV two-station, three-station and multi-station switch operation; the mechanism can also be applied to other fields to move in a rotation mode or in a translation mode; different output torques can be obtained through regulating the motor power; the electrical loop is controlled only utilizing a position switch, thus the number of tip points of the switch cam wheel equals to the number of the working positions of the mechanism, and the mechanism can be used for the operation of a multi-station switch and other mechanical movements.

Description

technical field [0001] The invention relates, in particular, to an operating mechanism of a three-position isolating grounding switch of a combined electrical appliance. Background technique [0002] The action of the combined electrical isolation and grounding switch requires that the operating mechanism must have various performances: one is to have two or more positions to match the working position of the switch; the other is to have a certain torque to ensure that the switch The third is to effectively prevent the occurrence of wrong signals; the fourth is to output an accurate angle to ensure the working position of the switch and lock it. [0003] High reliability and miniaturization are the development direction of switching electrical products. The isolation and grounding switches in combined electrical appliances have developed from the original single-function two-station to multi-functional three-station and five-station. The operating mechanism as the switching...

AI Technical Summary

Problems solved by technology

[0005] First, the structure is complex and bulky: the large volume of the operating mechanism restricts the miniaturization design of switch products

Complex structure and long mechanical transmission chain will inevitably lead to high failure rate, which will directly threaten the reliability of switch products

The larger the volume, the greater the weight, which will bring a lot of inconvenience to the transmission, packaging, transportation, storage, assembly and debugging of the mechanism

[0006] Second, the motor control circuit is cumbersome, which directly leads to too many control circuit components, troublesome operation, and a substantial increase in produ

Images