Multi-cutter head combined type cutting system for rectangular pipe pushing machine

Abstract

The invention provides a multi-cutter head combined type cutting system for a rectangular pipe pushing machine, relates to the technical field of construction equipment, and aims at solving the problems that when an existing combined type cutter head carries out construction in a sandy land layer, sandy soil on the tunnel face is easy to collapse, the cutter head is easy to clamp in a soil body, and even a cutter head bearing is fractured. The multi-cutter head combined type cutting system for the rectangular pipe pushing machine comprises multiple cutter heads which are symmetrically distributed on a shield of the rectangular pipe pushing machine and a driving device used for driving the cutter heads. Circumferences of cutting tracks of every two adjacent cutter heads are tangent. According to the multi-cutter head combined type cutting system for the rectangular pipe pushing machine, the cutting area of the cutter heads is enlarged, stratum full-face cutting can be achieved, the cutter heads are prevented from being trapped, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of construction equipment, in particular to a multi-cutter combined cutting system of a rectangular pipe jacking machine. Background technique [0002] Pipe jacking construction is a construction method of underground pipelines developed after shield tunneling construction. It relies on the thrust of the main jacking cylinder and the relay ring between pipelines to drive the tool pipe or roadheader through the soil layer from the working well to the ground. Push it into the receiving well and lift it, and at the same time, bury the pipeline following the tool pipe or the boring machine between the two wells, thereby realizing the construction method of laying underground pipelines without excavation. [0003] Rectangular pipe jacking machine is one of the commonly used equipment for laying underground pipelines. The type of cutter head on the rectangular pipe jacking machine has great problems in terms of ex...

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Problems solved by technology

[0004] Aiming at the problem that the existing combined cutter head is constructed in the sandy soil layer, the sandy soil on the working surface is easy to collapse, and the cutter head is easily stuck by the soil, and even causes the cutter head bearing to break. The purpose of the present invention is to provide a The multi-cutter combined cutting system of a rectangular pipe jacking machine changes the positional relationship of the combined cutter, expands the cutting area of ​​the cutter, realizes full-section cutting of the formation, avoids the cutter being trapped, and improves work efficiency

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