Lifting device used for coal mine tunnel

Abstract

The invention discloses a lifting device used for a coal mine tunnel, and relates to the technical field of lifting for coal mine tunnels. The lifting device comprises a platform trailer, a fixed box arranged in the middle of the top face of the platform trailer and a bearing plate arranged above the fixed box, an electric push cylinder is arranged in the fixed box, and a jacking mechanism used for lifting tunnel arch frames is arranged on the upper portion of a cylindrical box; and mounting shells are fixedly connected to the rear ends of the two sides of the bottom face of the bearing plate, and limiting assemblies used for arranging the tunnel arch frames are arranged in the mounting shells. By means of the limiting assemblies, the arch frames for the coal mine tunnel placed on the bearing plate can be conveniently separated, and the arch frames for the coal mine tunnel are prevented from deflecting after being placed; through cooperation of the electric push cylinder, the jacking mechanism and a rotating assembly, lifting operation combining coarse jacking and fine jacking is conveniently carried out on the arch frames for the coal mine tunnel, meanwhile, horizontal rotation operation of the arch frames is conveniently carried out when the arch frames are finely jacked, and convenience of the arch frames in the installation process is improved; and the working efficiency is effectively improved when workers install the arch frames.

Description

technical field [0001] The invention relates to the technical field of hoisting for coal mine roadways, in particular to a lifting device for coal mine roadways. Background technique [0002] In coal mine production, the same coal seam needs to be divided into multiple working faces for mining. In the process of building a new working face or dismantling an old working face, all fully mechanized mining equipment needs to be disassembled, especially for heavy equipment, each working face There are about 100 frames, so the workload of disassembly and assembly is very large, so a lifting device is required to lift the bracket; [0003] Existing lifting devices used in coal mine roadways are mostly rough jacking operations when lifting U-shaped brackets, and cannot perform horizontal rotation operations on the hoisted arches, requiring manual rotation of the arches. The overall operation not only increases the working intensity of the staff, but also increases the danger of the...

AI Technical Summary

Problems solved by technology

[0003] Existing lifting devices used in coal mine roadways are mostly rough jacking operations when lifting U-shaped brackets, and cannot perform horizontal rotation operations on the hoisted arches, requiring manual rotation of the arches. The overall operation not only increases the working intensity of the staff, but also increases the danger of the staff when installing the arch. At the same time, the existing lifting device is not convenient for the staff to connect the hoisted arch with the coal mine roadway. The top is tightly fitted, resulting in a large gap between the installed arch and the top of the coal mine roadway, so the above problems need to be solved

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