Manual opening and closing device of ring main unit

Abstract

The invention discloses a manual opening and closing device of a ring main unit. A closing force is applied to the transmission assembly through the driving structure to push the closing push rod to move, abutting against and pushing the driving bulge to drive the main shaft crank arm to rotate forwards through one end of a driving chute is carried out, and thus, closing rotation of the main shaftis realized; the driving structure does not apply force to the closing push rod any more after the main shaft rotates to the closing position, the closing push rod is reset and moves to an initial position under the action of the elastic reset structure, moving away from the driving bulge through one end of the driving chute is carried out, the main shaft crank arm is not driven to rotate, a section of idle stroke required by opening rotation of the main shaft is formed between the driving chute and the driving bulge again, the transmission assembly is automatically separated from the main shaft after closing, so that the transmission assembly does not interfere with electric opening and closing or manual opening rotation of the main shaft, the opening speed of the main shaft is increased, and the opening and closing time requirement specified by the state grid is met.

Description

technical field [0001] The invention relates to the technical field of high-voltage switchgear, in particular to a manual opening and closing device for a ring network cabinet. Background technique [0002] The ring network cabinet is a group of transmission and distribution electrical equipment (high-voltage switchgear) installed in a metal or non-metal insulated cabinet or made into an assembled interval ring network power supply unit. Its core part uses load switches and fuses. Simple, small size, low price, can improve power supply parameters and performance, and power supply security, etc., the application of ring main unit equipped with permanent magnet operating mechanism in my country's distribution network is expanding day by day, mainly due to the structure of permanent magnet operating mechanism Simple, high reliability, can better realize precise control, fast opening and other characteristics, the permanent magnet operating mechanism of the existing permanent magn...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that when the main shaft is opened, it will drive the closing lever device to open and rotate together, the transmission path is long, and the opening speed is too slow, so as to provide a main shaft The manual opening and closing device of the ring main unit is not set in linkage with the transmission component when opening, the transmission distance is short, and the opening speed is fast.

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