Canopy surface structure of front canopy used for mine excavation

Abstract

The invention provides a canopy surface structure of a front canopy used for mine excavation. The canopy surface structure comprises a main canopy surface, swing side canopies and a telescopic hydraulic cylinder; the front end face of the main canopy surface is glidingly connected with a group of telescopic canopies; the left side and the right side of the main canopy surface are hinged with the swing side canopies correspondingly; supporting legs and supporting leg racks are correspondingly in drive connection through supporting leg hydraulic cylinders; the rear end faces of the supporting leg racks and the rear end face of the main canopy surface are jointly hinged with a group of connecting rods; the main canopy surface and each swing side canopy are in drive connection through a corresponding swing hydraulic cylinder; and the main canopy surface and each telescopic canopy are in drive connection through the corresponding telescopic hydraulic cylinder. By installing the swing side canopies capable of swinging, when being not horizontal, the top part of a hoistway can be supported by adjusting the angle of each swing side canopy, so that the supporting area is increased, and thesupporting capacity is improved.

Description

technical field [0001] The invention belongs to the technical field of coal mine equipment, and more specifically relates to a beam surface structure of a front probe beam used for coal mine excavation. Background technique [0002] In the process of underground coal mine excavation, it is necessary to use the front beam to temporarily support the working face. The existing front beam is generally driven by a hydraulic mechanism to support the front beam on the working face. [0003] Based on the above, combined with the discovery of equipment in the prior art, the existing forward beam body is a fixed straight frame structure. In actual use, since the top of the well is not completely straight, especially for arc-shaped At the top of the hoistway, due to the small support area of ​​the front probe beam, the support capacity is limited. At the same time, most of the existing front probe beams are cantilever beam structures, and the load capacity of the front probe beam is li...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides the beam surface structure of the front probe beam used in coal mine excavation to solve the problem that the existing front probe beam body is a fixed straight frame structure. For straight structures, especially for arc-shaped hoistway tops, due to the small support area of ​​the front probe beam, the support capacity is limited. At the same time, the existing front probe beams are mostly cantilever beam mechanisms. The bearing capacity is limited, which affects the support performance

Images