Three-position operating mechanism

Abstract

The invention discloses a three-station operating mechanism. The three-station operating mechanism comprises a mechanism front plate, a mechanism rear plate, an output shaft module, a grounding side closing and opening module, an isolating side closing and opening module and a spring module. All the modules are assembled between the mechanism front plate and the mechanism rear plate. The output shaft module comprises an output shaft, an output shaft connecting lever and a drive pull rod. The spring module comprises a spring guide rod, a spring and a spring base. A limiting column for supporting the mechanism front plate and the mechanism rear plate and conducting mechanism closing and opening limiting is arranged between the mechanism front plate and the mechanism rear plate. The grounding side closing and opening module comprises a drive plate, a grounding operating shaft, a grounding drive connecting lever module and an output disc. The isolating side closing and opening module comprises a drive plate, an isolating operating shaft, an isolating drive connecting lever module and an output disc. The three-station operating mechanism is simple in structure, convenient to assemble, capable of reducing cost, safe, and reliable. A tripping module is additionally arranged and applied to a fuse-combination unit, and therefore the structure is more compact, and universality of the mechanism is improved.

Description

technical field [0001] The invention relates to a three-station operating mechanism, in particular to a three-station operating mechanism applied to a fuse combination electric appliance. Background technique [0002] The so-called three-position refers to three working positions: first, the closing position where the main break of the isolation switch is connected; second, the isolation position where the main break is separated; third, the grounding position on the grounding side. The three-position switch actually integrates the functions of the isolating switch and the grounding switch, and is completed by a knife, so that a mechanical lock can be realized to prevent the main circuit from being electrified and grounded. [0003] As the main core component in the high-voltage switch, the three-position operating mechanism needs to have good reliability. At present, many three-position spring operating mechanisms are large in size, complex in structure, low in versatility...

AI Technical Summary

Problems solved by technology

At present, many three-position spring operating mechanisms are large in size, complex in structure, low in versatility, and troublesome in processing parts, which not only affects the performance stability and reliability of the mechanism, but also increases the overall component volume, high cost, and unsatisfactory Good for factory, inconvenient for installation and maintenance

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