Large-stroke overall top beam suspension support

Abstract

The invention discloses a novel overall top beam suspension support for assembling a large-stroke single hydraulic prop, which is applicable to support of a coal mine. The overall top beam suspension support has large expansion stroke; and the maximum support height of the support can reach 2-2.5 times of the minimum support height according to different selected props. The large-stroke overall top beam suspension support is characterized in that the prop is selected according to a working face condition, and the minimum height and the maximum height of the support are adjusted so as to adapt to back production of coal beds with different thickness, thus avoiding replacement of the single prop owing to frequent change of the thickness of the coal beds on the same working face, and reducing the total quantity of the standby props of the mine.

Description

[0001] Technical field: The present invention is a kind of support equipment applied to coal mining face with large inclination angle. Background technique: [0002] A high-dip coal seam generally refers to a coal seam with a coal seam dip between 35° and 55°. When the longwall working face is arranged in such a coal seam, the more advanced support equipment is the integral top beam suspension support. Coal seams with large dip angles are characterized by unstable inclination angles and large changes in coal seam thickness. In the production of working faces under such conditions, the application of a set of existing support equipment often cannot meet the support requirements. Coal, and where the coal seam becomes thinner, it is necessary to lift the top or break the bottom, and the pillars need to be replaced frequently. The large gangue falling from the goaf impacts the rear pillars of the working face, which has a great impact on production and safety. Therefore, it is nec...

AI Technical Summary

Problems solved by technology

Coal seams with large dip angles are characterized by unstable inclination angles and large changes in coal seam thickness. In the production of working faces under such conditions, the application of a set of existing support equipment often cannot meet the support requirements. Coal, and where the coal seam becomes thinner, it is necessary to lift the top or break the bottom, and the pillars need to be replaced frequently. The large gangue falling from the goaf impacts the rear pillars of the working face, which has a great impact on production and safety. Therefore, it is necessary to This kind of support equipment can adapt to the change requirements of coal seam thickness, reduce the impact of frequent replacement of pillars in large-inclination working faces, and prevent safety hazards caused by gangue impacting pillars

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