Lower limit anti-collision device of special elevator of stepped fan drum

Abstract

The invention relates to a lower limit anti-collision device of an elevator of a stepped fan drum. Two top ends at the rear sides of an elevator chassis and an anti-collision detection plate are respectively provided with the same roller slot; a roller is arranged in the roller slot; a shearing fork rod consisting of two rods is respectively arranged at one side of the elevator chassis andthe anti-collision detection plate; the middle of the shearing fork rod is provided with a shearing fork shaft connecting the two rods; one end of the shearing fork rod is connected with a roller, while the other end is connected with a fixing plate at one end of the elevator chassis at the opposite angle or one end of the anti-collision detection plate; two sides below the elevator chassis are also respectively provided with a detection switch seat, and a detection switch is arranged on each detection switch seat; and the detection switches are linked with a baffle plate arranged on the shearing fork rod. The lower limit anti-collision device has the advantages that a mechanical structure cannot be clamped, the detection plate can completely cover the lower space of the elevator and completely detect lower foreign matters, and the safety of equipment and personnel is improved.

Description

technical field [0001] The invention relates to an elevator, in particular to a lower limit and anti-collision device of the elevator. Background technique [0002] When the elevator reaches the lower limit or detects that there is an object blocking the lower part, the elevator can automatically stop the descending action. This device can effectively control the lower limit position of the elevator, and effectively protect the safety of the objects below and the operation safety of the elevator when the elevator is running downward. [0003] The lower limit and anti-collision devices in the prior art have the following structures: [0004] First, it is made of a grooved rod, one end is a hinge fulcrum, and the other hinge end is a drop detection point. The structure and processing of this connection method are relatively simple, but there is a large blind area for the detection of the bottom, and only objects at the falling end can be detected, which has a large safety ha...

AI Technical Summary

Problems solved by technology

This structure is easy to cause wrong signals. When the elevator descends and stops in the middle position, the spring will bounce up and down, thereby triggering the wrong signal. In addition, when only a certain corner touches the object, the mechanical part of the detection board is easy to get stuck

[0006] Thirdly, the connection structure of double inclined rods is adopted. Due to structural reasons, the anti-collision detection board does not cover all the space below, and there is a detection blind area

Images