Mechanism for preventing injury by stall of hoisting vehicle during rail hoisting

Abstract

The invention relates to the technical field of railway laying machines, and discloses a mechanism for preventing injury by stall of a hoisting vehicle during rail hoisting. The mechanism comprises afixed disc, a limiting groove is formed inside the fixed disc, a rotating shaft is movably connected to the interior of the fixed disc, and a fixing nail is fixedly connected to the front surface of the rotating shaft. According to the mechanism for preventing the injury by stall of the hoisting vehicle during rail hoisting, when the hoisting device stalls on site, a first magnet makes contact with a second negative pole contact under the action of centrifugal force at the moment, so that magnetism is changed to enable a second magnet to attract the first magnet; and a first negative pole contact makes contact with a positive pole contact under the action of a sliding block at the moment, so that the current in an electrorheological body is conducted, then the effect that the electrorheological body is changed into a solid from a liquid is achieved, a push rod drives a limiting head to move into the limiting groove, a rotating rod is clamped at the moment, furthermore, the rotating shaft stops rotating, and then the effects of stall self-locking and sudden falling prevention of the hoisting device are achieved.

Description

technical field [0001] The invention relates to the technical field of railway laying machines, in particular to a hoisting vehicle used for rail hoisting to prevent stalling and wounding mechanism. Background technique [0002] During the laying and installation of railway tracks, it is often necessary to use a crane to hoist the rails. Due to the heavy weight of the rails, frequent work may cause mechanical fatigue to the hoisting device, resulting in a stall phenomenon, that is, a rapid drop during the lifting process. At this time, the life safety of the surrounding workers will be endangered, and how to make the hoisting device stall and self-lock to prevent sudden fall has become an important problem. Therefore, we have proposed a hoisting car used for rail hoisting to prevent stall injuries human agency. Contents of the invention [0003] (1) Solved technical problems [0004] Aiming at the deficiencies of the prior art, the present invention provides a hoisting v...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a hoisting vehicle stall-prevention mechanism for rail hoisting, which has the advantages of stall self-locking of the hoisting device and the advantages of preventing sudden falls, and solves the problem of frequ

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