Rectangular section excavation cutterhead and heading machine

Abstract

The invention provides a rectangular section excavation cutterhead and a heading machine. The rectangular section excavation cutterhead comprises a plurality of axially arranged rollers, and hobs are arranged on the periphery of each roller; the plurality of rollers comprise two outer rollers positioned on the outer side; the axis of the outer roller inclines backwards in the direction from the center of the cutter head to the outer side. The hobbing cutters of the outer roller comprise outer hobbing cutters, and at least one outer hobbing cutter extends outwards to the outside of the end face of the outer roller. By means of the method, the technical problem that it is difficult to achieve full-section excavation of the rectangular tunnel is solved.

Description

Technical field [0001] The present invention relates to the technical field of tunnel engineering equipment, and more particularly to a rectangular cross section opening dug cutter disk and a tractor. Background technique [0002] The shield method is highly automated, the construction speed is fast, which can effectively control the obvious advantages such as ground settlement. In the past, the underground tunnel section is mostly circular. Since the space utilization of the underground tunnel is constrained by the interrelationship between the urban surrounding environment, the spatial utilization of the circular tunnel is relatively low. [0003] The effective use area of ​​the rectangular tunnel can be increased by more than 20% compared to the conventional circular tunnel. The existing rectangular cross-section excavation is mainly eccentric multi-axis swinging cutter disc excavation and combined rotary cutter disc. Eccentric multi-axis swinging cutter can achieve full-secti...

AI Technical Summary

Problems solved by technology

The eccentric multi-axis oscillating cutter head can realize full-section excavation, but its structure is complex, its operation reliability is poor, and it has a large disturbance to the soil; the combined rotary cutter head has less disturbance to the surrounding soil, the structure is simple and easy to process and manufacture, and the equipment operates reliably High performance, but there is a certain blind area of ​​excavation in the excavation surface, and it is impossible to realize full-section excavation

[0004] Therefore, there are relatively difficult technical problems in realizing full-section excavation of rectangular tunnels

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