Bearing surface non-planar hydraulic support

Abstract

The present invention discloses a bearing surface non-planar hydraulic support. The bearing surface non-planar hydraulic support comprises a hydraulic support body, a first support plate and a secondsupport plate. Supporting arms of the hydraulic support body are formed by three mutually parallel support rods, first hydraulic cylinders are installed on the two support rods located at the outer sides at equal intervals, the top ends of the first hydraulic cylinders are rotationally connected with one ends of the outer sides of the first support plate and the second support plate through ear plates, the inner side ends of the first support plate and the second support plate are both integrally provided with connection plates, second hydraulic cylinders are installed on the support rod at the middle portion at equal intervals, and the top ends of the second hydraulic cylinders are rotationally connected with the middle portion of a fixed pin. The bearing surface non-planar hydraulic support uniformly transmits pressure into the first hydraulic cylinders and the second hydraulic cylinders through branch hydraulic tubes to allow the internal pressures of the cylinder bodies to be consistent, when the first support plate and the second support plate are lifted up, the support inclination of the first support plate and the second support plate is automatically regulated according tothe inclination condition of an ore layer surface to allow the first support plate and the second support plate to be tightly attached on the ore layer surface, and the support pressure is uniform.

Description

technical field [0001] The invention belongs to the technical field of hydraulic support devices, and in particular relates to a non-planar hydraulic support with a support surface. Background technique [0002] Hydraulic support is an important part of comprehensive coal mining equipment. It can reliably and effectively support and control the roof of the working face, isolate the goaf, and prevent gangue from entering the mining face and pushing the conveyor. In the process of coal mining, it is necessary to select different types of hydraulic supports according to the specific conditions of the coal mining face in the coal mine, so as to make better use of resources and improve coal mining efficiency. [0003] For example, the patent application number CN200920096177.0 discloses a light hydraulic support, which is simplified on the fully mechanized mining support, which not only needs to meet the performance and functional requirements of the mining face support, but als...

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Problems solved by technology

[0004] However, the above-mentioned scheme has the following defects in use: the top beam in the above-mentioned scheme is a planar structure, and in the actual mine tunnel environment, various degrees of mineral collapse will occur at the top of the mine tunnel, resulting in a concave-convex surface structure on the mine surface. When the above-mentioned top beam supports the non-planar mine bed, it is difficult to fit closely with the mine bed, resulting in uneven force on the mine bed, and extrusion will occur at high pressure, causing the mine bed to collapse again, which is not conducive to the support. support

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