A Folding Adjustment and Retracement Platform

Abstract

The invention discloses a foldable direction-changing withdrawing platform. The platform comprises a guide plate, a lifting and turning platform and a forward pulling platform, wherein rotating shafts are arranged on the guide plate, the lifting and turning platform and the forward pulling platform, and the guide plate, the lifting and turning platform and the forward pulling platform can rotate around the rotating shafts. The platform has the advantages as follows: the width of the withdrawing platform can be reduced from 4150mm to 1184mm through folding, and the platform can be conveyed from a position above a mine to a position under the mine integrally or from the position under the mine to the position above the mine integrally; and a top connecting device is propped against the top of the mine, the withdrawing platform is prevented from displacement, the top connecting device is foldable, a torsion-preventing device abuts against a hydraulic support which is not withdrawn, the torque is offset, and the torsion-preventing device adopts a retractable structure, so that the withdrawing platform is wider in application range.

Description

technical field [0001] The invention relates to the field of mining equipment, in particular to a retraction platform used for recovery of coal mine hydraulic supports. Background technique [0002] Coal mine fully mechanized mining hydraulic support is the most important equipment in the coal mine fully mechanized mining equipment. The hydraulic support is placed in front of the fully mechanized mining work to form a coal mining space. The hydraulic support relies on high-pressure liquid as the main power to complete the roof support of the working face, the forward movement of the support, the push conveyor and the goaf treatment. After the coal mining work of a coal mining face is completed, the fully mechanized mining equipment needs to be withdrawn. Due to the large number of hydraulic supports, large volume and heavy weight, special equipment is needed to withdraw the hydraulic supports. The process of withdrawing is: pull out a hydraulic support from the arranged hy...

AI Technical Summary

Problems solved by technology

[0003] 1. The retraction platform is large in volume and needs to be disassembled into parts and assembled underground, and the underground space is small, which is time-consuming and laborious; 2. When retracting the hydraulic support, the hydraulic support is pulled out through the steel cable and then rotated , therefore, a larger torque is formed, and under the action of this torque, the retraction platform is twisted; 3. Under the action of a larger tension and torque, the retraction platform is also displaced

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