Open-shield dual-mode small-turning-radius TBM (Tunnel Boring Machine)

Abstract

The invention belongs to the technical field of rock roadway tunnel excavation equipment, and discloses an open-shield dual-mode small-turning-radius TBM (Tunnel Boring Machine). The open-shield dual-mode small-turning-radius TBM comprises a tunneling system, a supporting and propelling system, a supporting system, a transmission system and a rear matching device. The tunneling system is composed of a cutterhead, a main drive, shield supporting shoes and a bottom shield, the cutterhead is installed at the end of the main drive, the shield supporting shoes are arranged on the left and right sides of the main drive, and the bottom shield is arranged on the lower side; the supporting and propelling system is composed of a telescopic outer shield, a telescopic inner shield and a tight supporting shield, the telescopic inner shield is embedded in the inner side of the telescopic outer shield, the telescopic inner shield and the telescopic outer shield jointly form a telescopic shield located on the rear side of the main drive, and the rear end of the telescopic inner shield is connected with the tight supporting shield. The tunneling machine integrates machinery, hydraulic pressure and electricity, can complete rapid excavation and efficient support of a tunnel with a small turning radius, and has the characteristics of high mechanization degree, compact structure, convenience in man-machine combination and the like.

Description

technical field [0001] The invention relates to the technical field of rock tunnel excavation equipment, in particular to an open-shield dual-mode small turning radius TBM boring machine. Background technique [0002] TBM roadheader is a kind of efficient hard rock roadheading equipment, which has been widely used in transportation, water diversion and other fields. In recent years, it has also been applied and developed in the field of coal mines. Compared with the traditional blasting method in the field of coal mines, the TBM roadheader can achieve fast tunneling, efficient support, and can adapt to different geological conditions, so it has received more attention. [0003] Most rock tunnels have turning phenomenon. With the application of TBM roadheader, higher requirements are put forward for the small radius turning of the equipment. The turning radius of the open TBM is limited by the left and right strokes of the double-rod holding cylinder and the length of the ma...

AI Technical Summary

Problems solved by technology

The turning radius of the open TBM is limited by the left and right strokes of the double-rod clamping cylinder and the length of the main beam of the open TBM. The turning radius is relatively large, which cannot meet the needs of the small turning radius of the mine.

At the same time, when excavating a large-diameter roadway, the structure of the open-type TBM roadheader is huge, and the transportation cost is high

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