Lift travel switch

Abstract

The invention is an elevator travel switch, and its characteristic: a base is fixed on a pedestal, a pin shaft arranged at the left end of the base is fixed on front and back side plates of the base, a connection rod is coated on the pin shaft, the right end of the connection rod is connected with a contact bracket, the right end of the contact bracket is connected with a manipulator, the top-end surface of the manipulator is made with a conic hole, one end of a spring is fastened on the outer side surface of the conic hole, the other end of the spring is fixed on the bottom-end surface of the base, the right end of the manipulator is connected with a bent plate, there is a round hole made in the middle of the bent plate, there is a shaft through the round hole, the shaft is fixed on the round holes of the front and back plates, the top end of the contact bracket is made with a round hole where the pin shaft is held, the pin shaft is installed with an active contact plate and a spring, there is a round cap on the two sides of the pin shaft, a static contact plate is fixed on the top-end surface of the base, a bolt at the right end of the base is provided with the active contact plate, spring and static contact plate and so on to compose a switching device. As compared with existing technique, its structure is novel, simple and reliable and low-manufacture cost, thus further assuring the safe coefficient of elevator, and it is worth spreading and applying.

Description

[technical field] [0001] The invention relates to an elevator safety component switch, in particular to an elevator travel switch. [Background technique] [0002] Elevator travel switch is one of the main safety components of the elevator. It is installed on the speed limiter and plays a protective role in the operation of the elevator. Because the current safety device switch can only play a protective role in the downward movement of the elevator, but in the upward movement of the elevator. When it gets out of control, it can't play a protective role. [Content of the invention] [0003] The object of the present invention is to solve the above-mentioned deficiency and provide a kind of elevator travel switch, the structure is novel, simple, reliable in use, and the elevator plays a protective role both when going up and down. [0004] Design a kind of elevator travel switch for realizing above-mentioned purpose, comprise base, pedestal, casing, connecting plate, contact...

AI Technical Summary

Problems solved by technology

[0002] Elevator travel switch is one of the main safety components of the elevator. It is installed on the speed limiter and plays a protective role in the operation of the elevator. Because the current safety device switch can only play a protective role in the downward movement of the elevator, but in the upward movement of the elevator. When it gets out of control, it can't play a protective role

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