Mechanical interlocking apparatus for contactor

Abstract

A mechanical interlocking apparatus for a contactor is disclosed. The mechanical interlocking apparatus comprises a shell (1) and a connecting plate (2); the mechanical interlocking apparatus is characterized in that a mounting groove (101) is formed in the shell (1); the connecting plate (2) is mounted in the mounting groove (101) of the shell (1); a left arc-shaped groove hole (101a) and a right arc-shaped groove hole (101b) are formed in the two side walls of the mounting groove (101) respectively; a left shaft (201) and a right shaft (202) are arranged on the two side surfaces of the connecting plate (2) in a protruding manner respectively; the left shaft (201) and the right shaft (202) penetrate through the corresponding left arc-shaped groove hole (101a) and the right arc-shaped groove hole (101b) respectively; permanent magnet mounting grooves (102, 102') are formed in the front and back ends, in the mounting groove (101), of the shell; permanent magnets (3, 3') are mounted in the permanent magnet mounting grooves (102, 102'); and the permanent magnets (3, 3') can generate adsorption force to the left shaft (201) and the right shaft (202) to enable the left shaft (201) and the right shaft (202) to be positioned on the top ends of the left arc-shaped groove hole (101a) and the right arc-shaped groove hole (101b) respectively. According to the mechanical interlocking apparatus provided by the invention, the structure of the interlocking apparatus is simplified; the reset of the interlocking apparatus is realized by magnetic force; the interlocking reliability is improved; and the service life of the mechanical interlocking apparatus is prolonged.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to a mechanical interlocking device for a contactor. Background technique [0002] Interlock refers to the mechanism that makes two or more than two mechanisms restrict each other and cannot act at the same time, and adopts the principle of "key conversion" and "key transmission", through mechanical devices or mechanisms, to realize the mutual interaction of equipment startup or operation process. The lock is called a mechanical interlock. [0003] At present, there is generally a connection mechanism between the two contactors to control the on / off of the two contactors so that the two contactors can work alternately, so as to realize the forward rotation-reverse rotation-stop action of the mechanical interlock device. process, to achieve the purpose of mechanical reliable protection. The coupling mechanism used between two contactors in the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a mechanical interlock device for contactors, which simplifies the construction of the interlock device, in view of the technical defects of the existing mechanical interlock device for contactors, such as complex structure, large energy consumption for spring reset, and low interlock reliability. Structure, using its own connection to realize the reset of the interlock device, which improves the reliability of the interlock and prolongs the life of the mechanical interlock device

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