Manual operation linkage mechanism of alternating current contactor

Abstract

The invention provides a manual operation linkage mechanism of an alternating current contactor, and relates to the technical field of alternating current contactors. The manual operation linkage mechanism of the alternating current contactor comprises a bottom plate, wherein a contactor body is fixedly arranged at the upper end of the bottom plate, supporting plates are fixedly arranged on the two sides of the upper end of the bottom plate, a shell is fixedly arranged at the upper ends of the two supporting plates, four first supporting columns are fixedly connected to the lower end of the shell, the lower ends of the four first supporting columns are fixedly connected with a partition plate, the lower end of the shell is fixedly connected with two second supporting columns, and the lower ends of the two second supporting columns are fixedly connected with a fixing plate. According to the manual operation linkage mechanism of the alternating current contactor provided by the invention, the comprehensive utilization efficiency of components is improved by optimizing and integrating elements of an existing control cabinet, manual control is realized without additionally arranging the components, the practical reliability of complete equipment is improved, and the production cost of an enterprise is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of AC contactors, in particular to a manual operation linkage mechanism of an AC contactor. Background technique [0002] At present, according to the GB50974-2014 standard of "Technical Specifications for Fire Water Supply and Fire Hydrant Systems", if the fire pump control cabinet cannot automatically start the fire pump with a relay and a weak current signal, it should rely on its "mechanical emergency start device" to directly start the fire pump. . [0003] The fire-fighting mechanical emergency starting device in the prior art is basically two 3P plastic casings or double-layer isolating switches closed at the same time to achieve the angular starting principle in the star-delta starting, but this requires adding a fire-fighting mechanical emergency to the fire pump automatic control cabinet. The starting device or additional fire-fighting machinery emergency starting cabinet will greatly increase the...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a manual operation linkage mechanism of an AC contactor, which solves the problem that the fire-fighting mechanical emergency starting device in the prior art is basically two 3P plastic shells or double-layer isolating switches that are closed at the same time to reach the stars. The triangular starting principle in the triangular starting, but it is necessary to add a fire-fighting machinery emergency starting device in the fire pump automatic control cabinet or additionally configure a fire-fighting machinery emergency starting cabinet, which greatly increases the cost of the production enterprise

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