Constant brake force anti-falling catching device and constant brake force anti-falling catching method for rigid cage guide of mine

Abstract

The invention provides a constant brake force anti-falling catching device and a constant brake force anti-falling catching method for a rigid cage guide of a mine. The catching device mainly comprises a bottom plate, a wedge box fixed on the bottom plate through bolts, a wedge seat, a sliding wedge, guiding strips on two sides of the wedge seat, rollers, a holding rack, a spring bolt for connecting the wedge seat and the wedge box, and a belleville spring sleeved on the spring bolt, wherein the wedge seat and the sliding wedge are symmetrically arranged on two inner sides of the wedge box; and the rollers and the holding rack are arranged between the wedge seat and the sliding wedge. When a rope is broken, a main pull rod falls, the overhung end of a shift lever is lifted, so that the sliding wedge moves upwards along the tracks of the guiding strips to be in contact with and extruded with the rigid cage guide to generate horizontal brake force, and the wedge seat compresses the belleville spring; and the pressure of the belleville spring exerted on the wedge seat is kept constant, so that the falling cage decelerates with a constant braking deceleration under the action of constant brake force, and finally is supported by the rigid cage guide. Therefore, the structure is compact; the brake is reliable; the horizontal brake force is constant and adjustable; and the effect is good.

Description

technical field [0001] The invention relates to a constant braking force anti-fall arresting device and method for rigid tanks in mines, and is especially suitable for hoisting containers of rigid tanks such as cages and mine elevator cars. Background technique [0002] At present, in most coal mines, for the anti-fall protection of rigid tanks, there is a KJB type rigid tank container drop arrester. braking force. During normal lifting, the wedge broach is pulled away from the tank. When there is a loose rope, the four wedge-shaped broaches are pulled towards the tank under the action of the pre-tensioned spring to realize the broaching brake. This kind of anti-dropping device will instantly generate a particularly large friction force during the anti-falling braking process, and its disadvantage is that it will cause a large braking force and acceleration, and cannot provide a constant braking force for the falling container, so as to lift the container. Danger to life ...

AI Technical Summary

Problems solved by technology

This kind of anti-dropping device will instantly generate a particularly large friction force during the anti-falling braking process, and its disadvantage is that it will cause a large braking force and acceleration, and cannot provide a constant braking force for the falling container, so as to lift the container. Danger to life of persons inside

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