Concave cutter of slurry balance tube push bench

Abstract

The invention relates to a concave cutter of a slurry balance tube push bench. The concave cutter comprises a cutter body, main cutter blades and first-moving blades. The cutter body is composed of spokes, a side plate, a rib plate, an outer edge plate, a rear cover plate, an abrasion resistance alloy strip and a support beam in a welding mode. The spokes are in a concave shape, the spokes are integrally connected through the side plate, the rib plate and the outer edge plate, and each spoke is provided with the main cutter blade and the first-moving blade. An inner cutter body is arranged inside the cutter body, and an outer cutter body is arranged outside the cutter body. A digging cutting track of the inner cutter body is provided with two main cutter blades and two first-moving blades in an assembling mode. A digging cutting track of the outer cutter body is provided with three main cutter blades and three first-moving blades in an assembling mode, and an outermost digging cutting track is provided with twelve scrapers in an assembling mode. The concave cutter of the slurry balance tube push bench can be suitable for the digging demands of complex soil layers and has the advantages of being high in opening rate, capable of supporting and protecting to a digging face, good in abrasion resistance performance and capable of crushing rock soil at second time and the like.

Description

technical field [0001] The invention relates to a mud-water balance pipe jacking machine, in particular to a mud-water balance pipe jacking machine cutterhead capable of cutting and secondary crushing of rock and soil. Background technique [0002] At present, the cutter head of the existing mud-water balance pipe jacking machine is excavated, such as the two water intake pipes of Dg1. The elevation of the pipe top is between -45 and 40M. The pipeline mainly passes through layers of silty clay, silty sand, and silty clay. When the layer of strong weathered granite contains moderately weathered granite blocks, the rock and soil cannot be cut and secondary broken. The rigidity and strength of the cutter head are not enough, and the opening of the cutter head low rate. Contents of the invention [0003] The present invention is to provide a mud-water balance pipe jacking machine cutter head, which can adapt to the excavation requirements of complex soil layers, and has high...

AI Technical Summary

Problems solved by technology

The pipeline mainly passes through layers of silty clay, silty sand, and silty clay. When the layer of strong weathered granite contains moderately weathered granite blocks, the rock and soil cannot be cut and secondary broken. The rigidity and strength of the cutter head are not enough, and the opening of the cutter head low rate

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