Annular cutting type rectangular pipe jacking machine cutting cutter head

Abstract

The invention relates to the field of pipe jacking machine rectangular cutting cutter heads, in particular to an annular cutting type rectangular pipe jacking machine cutting cutter. The cutting cutter comprises a protection body, cutting heads, a driving motor and the like; and the driving motor drives driving gears on a rotating body to enable the rotating body to rotate, when the rotating bodyrotates, the gears on the rotating body rotate through telescopic rods under the condition that the gears mesh with racks, and meanwhile, rotating rods are limited in notches in the side face of a supporting body, so that the rotating rods rotate at the same time and move along a square track along the notches, and then the cutting heads re driven to rotate and move to complete rectangular sectionsquare edge digging. According to the cutter head, through the action of the gears, the racks and the telescopic rods, the multiple cutting heads can move along a rectangular path while rotating to complete rectangular section square edge cutting, the structure is simple, and the digging effect is good; and meanwhile, a main cutting disc is driven to rotate through movement of the rotating rods,so that power of the main cutting disc and a transmission mechanism are omitted, and the structure is simpler.

Description

technical field [0001] The invention relates to the field of rectangular cutting cutter heads of pipe jacking machines, in particular to a cutting cutter head of a circular cutting rectangular pipe jacking machine. Background technique [0002] As a commonly used tunnel excavation equipment, pipe jacking machines have many types and specifications. According to the working principle, pipe jacking machines are generally divided into manual pipe jacking machines, semi-mechanical pipe jacking machines, and mechanical pipe jacking machines. The shape of the excavation section can also be divided into circular section pipe jacking machine and rectangular section pipe jacking machine. The rectangular section pipe jacking machine is widely used in subway tunnel excavation. However, the traditional rectangular pipe jacking machine has a complex structure and relatively low stability. Difference; [0003] The invention patent JP2002021481A "Rectangular Section Tunnel Drilling Method...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the present invention is made in view of the above problems. The purpose of the present invention is to use the gear on the telescopic rod to mesh with the rack on the protective body. When the telescopic rod rotates, the gear drives the cutting head to rotate and make a square track. Move, to reach the cutting of rectangular cross-section square edge, solve the problem of complex cutting structure of square cross-section, the present invention realizes above-mentioned purpose by following technical scheme:

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