Roadheader

Abstract

A tunneling machine for tunneling gross section coal drift consists of a cutting unit, a body, a travel unit, a blade, a conveyor and a hydraulic system, etc. The cutting unit consists of a cutting head (4), a cantilever (3), a cutting motor, a cutting reduction gearbox and a telescopic part, etc. The cantilever (3) is connected with the body through a side slip guide mechanism namely a crosshead (2) is hinged onto the rear end of the cantilever (3); a guide body is arranged on the rear end of the crosshead; a guide holder (1) is fixed on the body; a guide groove is arranged on the front end of the guide holder, and the guide body is embedded in the guide groove and is in slide fit with the guide groove; or the two parts are arranged in a reverse way. A driving element or mechanism for driving the crosshead and the cantilever to make lateral movement is arranged between the guide holder and the crosshead. A cantilever tilt cylinder is hinged between the cantilever (3) and the crosshead (2). The wall of the coal drift cut by the tunneling machine is smooth, flat and easy in supporting, thereby improving supporting efficiency and effect. The cutting unit makes a large range of lateral movement, thereby realizing gross section fixed point cutting in a wider coal drift without lateral movement of the whole machine, shortening cycle time, improving tunneling speed and efficiency with great adaptability.

Description

technical field [0001] The invention relates to a comprehensive mechanized roadheader for a mine roadway, in particular to a roadway roadheader for a full-section coal roadway fully mechanized roadhead with a relatively large driving width in a coal mine. Background technique [0002] At present, coal mine comprehensive mechanized excavation working faces are mostly coal roadway excavation. There are mainly two types of excavation machines used at home and abroad: one is ordinary excavation machine, or fully mechanized excavation machine; the other is that excavation and bolt support are completed at the same time The integrated unit of digging and bolting, or combined unit of digging and bolting, or unit of digging and bolting. [0003] Ordinary roadheader, taking S150 type as an example, its cutting part is composed of cutting head, cantilever, cutting motor, cutting reducer, telescopic part and so on. The cutting head is in the shape of a round head and is installed on t...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages that the unevenness of the roadway coal wall cut by the existing ordinary roadheader affects the support, and the lateral swing of the cutting part is too small to realize fixed-point cutting when driving a wide roadway, the present invention provides a roadway roadheader, which The cutting part can realize a wide range of horizontal and lateral movement, which can meet the fixed-point cutting requirements of the entire section of the wide roadway, without the need for the roadheader to retreat repeatedly as a whole, and to perform lateral adjustment, saving cycle time and improving tunneling speed and work efficiency; The cut roadway wall is flat and does not affect the support

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