Compact full-face rock tunneling machine suitable for small-diameter rock tunnel

Abstract

The invention provides a compact full-face rock tunneling machine suitable for a small-diameter rock tunnel. A driving motor transmits torque to a cutterhead through a driving speed reducer, a driving shaft and a driving support, and the cutterhead is driven to rotate. When the surrounding rock condition is good, a tight supporting oil cylinder tightly supports a rock hole wall through supporting shoes, a pushing oil cylinder pushes a hinged shield and a front shield to move forwards, then the cutterhead is pushed through a driving support on the front shield, the cutterhead crushes rock through rotation and extrusion, the rock is transferred out through a deslagging system, and tunnel excavation is completed; and after the pushing oil cylinder reaches the stroke, a tight supporting oil cylinder in a tight supporting shield retracts back, the pushing oil cylinder retracts back, the tight supporting shield moves forwards, and a pushing cycle is completed. Aiming at adverse working conditions of weak surrounding rock, an auxiliary tight supporting mechanism is designed at the rear part of the tight supporting shield to cope with insufficient tight supporting force, and meanwhile, the auxiliary tight supporting effect and the tight supporting shield step changing effect can be achieved when the rock is broken. The scheme has the advantages of reasonable design, compact structure, high excavation efficiency, capability of meeting rock tunnel construction requirements and the like.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction machinery, and is particularly suitable for a full-face rock boring machine with a small diameter (diameter less than 3m) for rapid construction. Background technique [0002] At present, the full-section rock tunnel boring machine is relatively mature in the construction of medium and large-section rock tunnels, but in the construction of small-diameter rock tunnels, due to the structural limitations of the full-section rock tunnel boring machine, the traditional manual blasting method is used, and the monthly footage is less than 100m , and the working environment is extremely harsh. [0003] Therefore, how to meet the construction requirements of small-diameter rock tunnels and improve the driving efficiency is a technical problem to be solved urgently by those skilled in the art. Contents of the invention [0004] The object of the present invention is to provide a compact full-...

AI Technical Summary

Problems solved by technology

[0002] At present, the full-section rock tunnel boring machine is relatively mature in the construction of medium and large section rock tunnels, but in the construction of small-diameter rock tunnels, due to the structural limitations of the full-section rock tunnel boring machine, the traditional manual blasting method is used, and the monthly footage is less than 100m , and the working environment is extremely harsh

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