Limiting switch of lifting machine

Abstract

The invention discloses a limiting switch of a lifting machine. The limiting switch comprises a base and the like. The base is fixed to a boundary frame of the lifting machine through a small cross-shaped bolt. A left limiting signal lamp and a right limiting signal lamp are arranged on the side edge of the base. The upper end of the base is connected with a rotation piece through a torsion spring. A contact strip is fixed to the rotation piece through a large cross-shaped bolt. A gasket is arranged between the large cross-shaped bolt and the contact strip. A contact head is arranged at the front end of the contact strip and fixed to the contact strip through an elastic buckle. A long-strip-shaped through groove is formed in the contact strip, a left limiting sliding block and a right limiting sliding block are arranged on the two sides of the contact strip, and a locking piece is arranged at the upper end of the rotation piece. By means of the limiting switch, the limiting condition of the strip can be adjusted, the limiting requirements of different brands and types of lifting machines under different work conditions are met, the structure is simple and stable, and producing and manufacturing are easy.

Description

technical field [0001] The invention relates to a limit switch, in particular to a limit switch of an elevator. Background technique [0002] Limit switches are very common in daily life. For example, limit switches used in elevators basically include a base arranged on the elevator frame, a rotating member rotatably arranged on the base, and a rotating member for making the rotating member The torsion spring that can restore the initial state by itself, the contact bar fixed on the rotating part, and the contact head set at one end of the contact bar. When the elevator is rising and falling, the lifting rod contacts the contact head until it is lifted and separated from the contact head. Contact, which shows that the lifting process of the elevator is stable and safe. However, the position of the contact bar of the above-mentioned limit switch is fixed. Once the contact part of the lifting rod changes, the contact head will not be able to contact with the contact part. At t...

AI Technical Summary

Problems solved by technology

[0002] Limit switches are very common in daily life. For example, limit switches used in elevators basically include a base arranged on the elevator frame, a rotating member rotatably arranged on the base, and a rotating member for making the rotating member The torsion spring that can restore the initial state by itself, the contact bar fixed on the rotating part, and the contact head set at one end of the contact bar. When the elevator is rising and falling, the lifting rod contacts the contact head until it is lifted and separated from the contact head. Contact, which shows that the lifting process of the elevator is stable and safe. However, the position of the contact bar of the above-mentioned limit switch is fixed. Once the contact part of the lifting rod changes, the contact head will not be able to contact with the contact part. At this time, the limit switch switch, will not be able to meet the job requirements

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