Device for lifting, assembling and disassembling downhole hydraulic bracket

Abstract

The invention discloses a device for lifting, assembling and disassembling a downhole hydraulic bracket. The device comprises a parallel-connection lifting mechanism, a tensioning device and supporting vertical columns; the supporting vertical columns comprise four hydraulic telescopic cylinders, two top beams and two bottom beams, a top supporting platform is mounted at the top ends of the two top beams, and the parallel-connection lifting mechanism is arranged in the middle of the top supporting platform and comprises three sets of driving telescopic cylinders, one set of driven branched chain and a movable platform; and the tensioning device comprises a transverse pushing cylinder, a tensioning device bottom plate, a lifting hook and a lifting chain, the tensioning device bottom plate is fixed to the lower end of the movable platform, and the free end of the lifting chain penetrates through a through hole in the tensioning device bottom plate to face downwards vertically, and is connected with the lifting hook at the tail end. According to the device for lifting, assembling and disassembling the downhole hydraulic bracket, assembling and disassembling operation of the fully mechanized hydraulic bracket in the bracket moving process can be completed quickly and accurately, meanwhile, the construction requirements of a chamber are lowered, the labor operation of workers is reduced, and the mechanization level of mounting and demounting work of equipment on a fully mechanized coal mining face is increased.

Description

technical field [0001] The invention relates to a device for hoisting, assembling and dismantling an underground hydraulic support, belonging to the technical field of underground coal mining equipment. Background technique [0002] Coal mine fully mechanized mining hydraulic support is an important professional equipment in coal mine mechanized mining. The hydraulic support uses high-pressure liquid as the power source to realize the roof support of fully mechanized mining face, forward movement of support, pushing conveyor and goaf treatment. The main components of the hydraulic support include base, hydraulic column, top beam, front beam, cover beam and tail beam and other components. Due to the large size and weight of the hydraulic support, and the small space in the roadway, during the installation and withdrawal process of the working face, the hydraulic support must be disassembled into the well and then assembled. Then transport to the designated location. [0003...

AI Technical Summary

Problems solved by technology

The lifting device adopts the principle of the telescopic thrust of the hydraulic cylinder and the increased stroke of the octagonal pulley, which meets the disassembly and assembly of the hydraulic support, realizes the requirements of lifting force and lifting stroke, and completes the lifting disassembly and assembly of the hydraulic support and other fully mechanized mining equipment. The disassembly, assembly, and loading and unloading work of this method have higher requirements on the length of the chamber in the actual use process; the lifting device relies on four main lifting hooks to realize horizontal, vertical and horizontal movement, so it is difficult to adjust the posture during hoisting, and it is difficult to be accurate Hoisting positioning affects assembly efficiency

Images