Automatic bolt mesh laying step type temporary support for fully mechanized excavation faces

Abstract

The invention belongs to the technical field of temporary supports for underground fully mechanized excavation faces of coal mines, and particularly relates to an automatic bolt mesh laying step type temporary support for fully mechanized excavation faces, which solves the current problem that the efficiency of high-performance excavators cannot be sufficiently exerted because excavation, temporary supporting and bolting cannot be carried out synchronously. The automatic bolt mesh laying step type temporary support for fully mechanized excavation faces comprises an inner support assembly and an outer support assembly, the inner support assembly and the outer support assembly respectively comprise a left support and a right support, the left support and right support of the inner support assembly are arranged at the inner sides of the left support and right support of the outer support assembly, a height difference exists between the tops of crossbeams and the bottoms of longitudinal beams of one set of support assembly, and carrier rollers are arranged at positions where the tops of the crossbeams correspond to the bottoms of longitudinal beams of the other set of support assembly. Excavation, temporary supporting, bolt mesh laying, bolt mesh connection and bolting can be carried out synchronously, the labor intensity of workers is decreased greatly, the efficiency of excavation is increased, a working face can be supported in time, and a powerful guarantee is provided for the safety of operating personnel.

Description

technical field [0001] The invention belongs to the technical field of temporary support brackets for fully mechanized excavation faces in coal mines, and in particular relates to a temporary support bracket for automatically laying nets and stepping steps for fully mechanized excavation faces. Background technique [0002] Temporary advance supports commonly used in most coal mine underground excavation working faces in China include: one is the temporary support of the hanging ring piercing type front probe beam; the other is the temporary support device mounted on the roadheader; the third is the use of multi-row monomer Hydraulic prop plus high-strength I-beam beam support method, etc. Although these methods have relieved the pressure of the head-on support of the excavation working face to a certain extent and improved the support condition of the working face, but in the actual use process, the support force is still small, and the roadway roof is repeatedly suppor...

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Problems solved by technology

[0004] The present invention solves the problem that during the excavation process of the underground roadway, since the roof cannot be effectively supported in time after the roadway is excavated, accidents of roof falling off and hurting people are often caused, and the synchronous progress of excavation, temporary support and anchor protection cannot be realized, and the full use of To solve the problem of the efficiency of high-performance roadheaders, a temporary support bracket for automatic laying and stepping of fully mechanized excavation faces is provided

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