Forepoling bar structure for coal mine excavation

Abstract

The invention provides a forepoling bar structure for coal mine excavation. The forepoling bar structure comprises a main body, supporting pieces, turning rods, a bearing piece, a clamping piece, moving rods and ejection pieces, wherein the main body is of a rectangular long-strip-shaped structure, moving grooves are formed in the bottoms of the two ends of the main body, each supporting piece comprises connecting plates, and is of a cylindrical structure, an inserting hole of a circular structure is formed in the middle of the bottom of each supporting piece, and the two sides of the bottom of each supporting piece are provided with the corresponding connecting plates. The turning rods are used for being mounted at the bottoms of the supporting pieces so that the forepoling bar structurecan be conveniently and rapidly switched between a moving state and a fixed state when being used, therefore rapid fixing and using can be completed, the turning rods each are of an arc-shaped long-strip-shaped structure so that when the forepoling bar structure needs to be moved through moving wheels, the top ends of the turning rods can be inserted into inserting holes in the bottoms of the supporting pieces, then the turning rods cannot be turned any more, and can be fixed in a using state, and then the forepoling bar structure can be conveniently moved through the moving wheels.

Description

technical field [0001] The invention belongs to the technical field of forward-looking beams, and more specifically relates to a forward-looking beam structure for coal mine excavation. Background technique [0002] The front probing beam is a device for temporary support in coal mine underground excavation work. [0003] For example, the application number: CN201910728559.9 relates to a front probe beam surface structure for coal mine excavation, including a main beam surface, a swing side beam and a telescopic hydraulic cylinder; the front end of the main beam surface is slidingly connected with a set of said Telescopic beam; the left and right sides of the main beam surface are hinged with a set of swing side beams; the supporting legs and the outrigger frame are connected through outrigger hydraulic cylinder transmission; the rear end surface of the outrigger frame A set of connecting rods is jointly hinged with the rear end surface of the main beam surface; the main be...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention provides a forward probe beam structure for coal mine excavation to solve the problem that the existing probe beam usually needs to be moved to an appropriate position for fixing when it is in use, and the existing ones cannot be conveniently combined The mobile structure and the fixed structure cannot be moved to an appropriate position and fixed quickly and stably. Moreover, when the existing front probe beam is supported, it is easy to encounter unevenness on the top surface. The different heights of the position are fixed firmly, and it cannot be properly adjusted according to the top surface of different shapes, which will easily lead to misalignment instability and potential safety hazards when supporting

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