A spring operating mechanism for vacuum load switch

Abstract

The invention relates to a spring operating mechanism for a vacuum load switch. The spring operating mechanism comprises a front plate, a rear plate, an input shaft, an output shaft, a spring, an elastic force transfer plate, a stop piece, a multi-functional operating block, an output crank arm and a roller, wherein the front plate and the rear plate are arranged parallel to each other, the input shaft is connected with the front plate, the output shaft is connected with the rear plate, one end of the spring is arranged on a fixed piece between the front plate and the rear plate, the elastic force transfer plate is arranged on a transmission shaft coaxial to the input shaft, the other end of the spring is connected with the elastic force transfer plate, the stop piece is arranged on the transmission shaft, the multi-functional operating block is provided with a rolling groove, the multi-functional operating block and the stop piece are concentrically arranged on the transmission shaft, the output crank arm is arranged on the output shaft, the roller is connected with the crank arm and can roll in the rolling groove, the elastic force transfer plate is driven to rotate when the input shaft rotates, so that energy is stored by the spring and is automatically released when the spring passes through a dead point, the elastic force transfer plate drives the stop piece to synchronously rotate with the multi-functional operating block, the output crank arm is rotated by the roller, and closing / breaking operation is completed. By the spring operating mechanism, the functions of breaking and closing of an existing spring are achieved by the spring, and the spring operating mechanism is simple in structure and low in cost.

Description

technical field [0001] The invention relates to a spring operating mechanism, in particular to a spring operating mechanism for a vacuum load switch. Background technique [0002] In recent years, with the improvement of the power distribution network, the domestic RMU has developed by leaps and bounds. According to the statistics of the China Electricity Council, in 2014 alone, there were about 600,000 units (or intervals) of the domestic RMU. Thanks to SF 6 Superior insulation performance and breaking performance, about 94% of ring network cabinets use SF 6 Gas cabinet, SF 6 There will also be a greenhouse effect. Pure SF 6 Non-toxic, but the products produced may be mixed with toxic sub-sulfur fluoride, hydrogen fluoride, and disulfur decafluoride. Therefore, SF 6 The gas has an adverse effect on the environment. [0003] With the improvement of environmental awareness, no SF 6 Environmentally friendly products have been developed, including solid insulated ring n...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the above-mentioned existing vacuum load switch operating mechanism generally has a closing tripping system, an opening tripping system, a closing holding system and an opening holding system, the number of parts is large, and the product is complicated; and the above-mentioned operating mechanism The energy of the energy storage spring is not only used for closing the brake, but also needs to store energy for the opening spring. A spring with large energy will reduce the life of the mechanism components

3. The mechanism has the function of reclosing, but the vacuum load switch does not need reclosing, so the reclosing function becomes redundant, causing unnecessary waste and virtually increasing the cost of the vacuum load switch

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