Arch-cross-section roadway tunneling support device

Abstract

The invention relates to an arch-cross-section roadway tunneling support device, which is integrally of an arch door type structure. A support frame of the arch-cross-section roadway tunneling support device comprises bases (1), wherein an upright post (2) is arranged on each base (1) for supporting the whole support device, the upper part of each upright post (2) is connected with a longitudinal top beam (3), a vertical beam installing seat is arranged on each base, a movable vertical beam sheaths the inside of each vertical beam installing seat, the upper end of each movable vertical beam is hinged to the corresponding top beam, arch support cross beams (4 and 9) are arranged on the top beams (3), a plurality of saddle-shaped parallel beam seats (5) are arranged on the arch support cross beams, a parallel beam (7) is arranged on each saddle-shaped parallel beam seat (5) and supports a roadway top plate, the arch support cross beams of the arch-cross-section roadway tunneling support device are divided into left and right end part cross beams (4) and left and right movable cross beams (9), the left and right end part cross beams are hinged to the cross beam seats of the top beams (3) of the support frame through hinging pin holes (12), the movable cross beams (9) are arranged inside the end part cross beams (4), and position limiting pin shafts are utilized for penetrating through the position limiting pin holes (12) and position limiting openings of the movable cross beams (9) to realize position limiting hinging.

Description

technical field [0001] The invention relates to a coal mine excavation support device, which is an arched door structure as a whole, and particularly relates to a coal mine excavation support with an arched section, which can be matched with different types of roadheaders to complete all the processes of roadway excavation, including the completion of the roadway The control roof and advanced support work of the excavation face can effectively support the arched section at the same time, preventing safety hazards. Background technique [0002] Most coal mine roadways generally adopt blasting excavation and mechanized excavation. With the continuous improvement of the performance of excavation machinery and equipment, mechanical excavation has become the main direction of development. However, more than 40% of personal casualties in coal mine excavation and production operations are roof accidents that occur in the process of working face support. Due to the limited excavati...

AI Technical Summary

Problems solved by technology

Since no-top work is not allowed, support must be carried out in time, and advance support must be done before permanent support, and advance support has always been a bottleneck affecting the progress and safety of excavation operations

[0003] In the arch section roadway support devices in the prior art, because they all adopt the fixed frame structure, a set of equipment is only suitable for the roadway of one cross section form, but the roadway of a coal mine needs different cross-sectional structures due to different functions, so Existing equipment of a certain specification cannot meet the requirements of all excavation work in coal mines, resulting in repeated investment in equipment; and because it is difficult to achieve an ideal roof structure as standard as the construction drawings in roadway excavation construction, resulting in unsteady beams during the support process. Reliable full-section roofing may be achieved, resulting in the failure of part of the super-cut roof to be connected to the roof, resulting in loosening of the surrounding rock; at the same time, due to the change of the roofing area, this leads to uneven support parts and excessive pressure on the part that can be connected to the roof. The surrounding rock of the roof causes secondary damage; during the process of moving the frame, it is not allowed to move the frame under pressure, which will inevitably cause a temporary loss of roof support pressure during the moving process, which will cause the roof to fall due to loosening of the surrounding rock.

[0004] The present invention is proposed in order to solve the problems and unsafe factors existing in the current operation mode, operation process and specific support operation of coal mine roadway excavation.

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