Cutting blade disc of muddy water balance push bench

Abstract

The invention relates to a cutting blade disc of a muddy water balance push bench. The cutting blade disc comprises a circular box-type blade disc panel arranged at the front end of a cutting housing of the push bench, six spokes arranged at the front end of the blade disc panel, and a center knife arranged in the central position of the blade disc panel; the spokes are radially and uniformly arranged from the center of the blade disc panel to the edge, and divide the blade disc panel into six regions with equal areas; a plurality of pairs of splayed cutting blades are symmetrically arranged on the two sides of each spoke, and antecedence knifes are arranged among a part of paired cutting blades; two openable circular soil inlets are symmetrically formed in two of the six regions of the blade disc panel by using the center knife as a symmetric centre; rectangular openings are formed in the four other regions of the blade disc panel respectively, a plurality of pairs of scrapers are symmetrically and linearly arranged on the two sides of each rectangular opening, and narrow soil inlets are formed between every two scrapers. The cutting blade disc is suitable for both pure sand soil layers and complex soil layers, and can be widely used in various muddy water balance push benches.

Description

technical field [0001] The invention relates to a component of a pipe jacking machine, in particular to a cutting cutterhead of a mud-water balanced pipe jacking machine which is applicable to pure sandy soil layers and complex soil layers. Background technique [0002] With the development of social economy and the improvement of infrastructure, especially the acceleration of urbanization, the transmission pipeline projects of liquid and gaseous media passing through roads, rivers and buildings inside and outside cities are increasing day by day, and trenchless technology has been widely used. As a kind of non-excavation technology, the mud-water balanced pipe jacking machine has the advantages of adapting to wide soil layers, stable excavation surface, and small ground subsidence. Comprehensive pipeline, etc.) engineering, so it has been widely used. [0003] As the key component of the mud-water balance pipe jacking machine, the cutting cutter head directly affects the p...

AI Technical Summary

Problems solved by technology

Most of the cutting cutterheads of the existing mud-water balance pipe jacking machines are in the form of a single cutterhead, and most of them can only be applied to pure sandy soil layers such as sandy soil and soft soil. Poor breaking and excavation performance

However, in the process of tunnel excavation, different soil conditions may be encountered in different sections, and sometimes a single cutter head cannot meet the entire construction needs and cannot adapt to complex soil conditions.

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