Split type gap bridge structure of suspension body coal mining machine and body of ultra-thin coal seam coal mining machine

Abstract

The invention relates to a split type gap bridge structure of a suspension body coal mining machine and a body of an ultra-thin coal seam coal mining machine. The gap bridge structure comprises a middle box body, a left connecting block and a right connecting block which are connected with one another, wherein an upper positioning boss and a lower positioning boss are arranged on the front end surface of the middle box body; a left connecting lug and a right connecting lug are respectively arranged at the front parts of the left connecting block and the right connecting block; the body comprises a fixed reduction gearbox shell, a gap bridge structure, a front guide plate and a rear guide plate; the upper plane of the upper positioning boss and the lower plane of the lower positioning boss respectively form positioning matching surfaces with the upper groove wall and the lower groove wall of a positioning groove in the rear end surface of the fixed reduction gearbox shell; the left connecting lug and the right connecting lug are respectively inserted into a left groove and a right groove in the fixed reduction gearbox shell and are matched with a left positioning pin shaft hole and a right positioning pin shaft hole; the rear ends of the left connecting block and the right connecting block are respectively connected with a pair of front guide plate and rear guide plate; and guide groove structures with lower openings are formed in the paired front guide plate and rear guide plate. According to the split type gap bridge structure, a damaged part of a supporting part is replaced, and the split type gap bridge structure can be matched with conveyors with different widths.

Description

technical field [0001] The invention relates to a shearer bridge structure and a shearer fuselage with the bridge structure. The bridge structure is assembled from a plurality of parts arranged in left and right directions. Background technique [0002] For extremely thin coal seam shearers, in order to reduce the height of the machine surface and make full use of the side space of the coal wall, the main part other than the rocker arm is usually divided into two parts: the bridge structure and the fixed reduction box. The bridge structure spans above the conveyor. The fixed reduction box is arranged on the side of the coal wall of the conveyor. In order to avoid transportation difficulties caused by oversized dimensions, the bridge structure and the fixed reduction box are usually two structures that are detachably and fixedly connected. The inner cavity of the bridge structure contains the function of the electric control box. Once the fixed connection of these two parts ...

AI Technical Summary

Problems solved by technology

The inner cavity of the bridge structure contains the function of the electric control box. Once the fixed connection of these two parts is damaged and fails, it will lead to the overall replacement of the electric control box, which affects production and increases equipment maintenance costs.

[0003] At the same time, the bridge structure of the same width cannot meet the matching requirements of conveyors of different widths. Therefore, when conveyors of different widths need to be matched, it is necessary to re-apply for safety standards and manufacturing, and the maintenance cost of equipment is greatly increased.

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