Device for retracting support from underground working face of coal mine

Abstract

The invention discloses a device for retracting a support from an underground working face of a coal mine. The device is characterized in that one end of a turning platform I is hinged to a lifting platform; chain clamping devices I are arranged at one end of the turning platform I and one end of a turning platform II respectively; a turning baffle is fixed to the other end of the turning platform II; hoisting pillars are arranged on four corners of a truck loading base, and a chain clamping device II is assembled at the tail end of the truck loading base; a telescopic assembly is connected between the turning platform II and the truck loading base, and push-pull cylinders are arranged on the two sides of the telescopic assembly. The device has the advantages that safety is remarkably improved, working efficiency is improved, labor intensity is lowered, the number of operators is reduced, and the service life of a steel wire rope is prolonged.

Description

technical field [0001] The invention belongs to a coal mine machine, in particular to a support removal platform used for withdrawing support of a working face. Background technique [0002] When the coal mine working face is dismantled, the order of equipment retraction is generally the stringer, the loader, the transporter, the shearer, and the support. The bracket is the last device to be retracted during the dismantling of the working face, and it is also the key point in the dismantling of the working face. In the past, when withdrawing the support, it was necessary to use three kinds of equipment, the cover support, the support removal platform and the winch. Among them, the cover bracket adopts the 4000 / 17 / 35 type bracket, which requires 3 sets, and is usually arranged on the back triangle point of the working face. During the retraction of the bracket, it moves with the retraction of the bracket. The outer ends of the brackets that need to be retracted are aligned,...

AI Technical Summary

Problems solved by technology

[0006] 2. The way to move the bracket from the demolition platform to the flat car is to fix the flat car first, then use the back column winch to pull the bracket, and pull the bracket to the flat car. During the traction process, there will be scratches, which will easily cause the wire rope to break ;When the support is heavy on the flat car, it is easy to cause the flat car to fall off the track; when towing, the area between the towed support and the return column winch is a dangerous area, and all operations must be stopped, which will affect the progress of the work

[0007] 3. Low work efficiency

When retracting the support, only one set of support can be withdrawn, and the two sets of cover support and removal platform can be moved to the designated position before the next set of support can be retracted, which is inefficient.

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