Roller type cutter rectangular pipe jacking machine

Abstract

The invention relates to a roller type cutter rectangular pipe jacking machine, which comprises a cutter, a cutter driving system, a spiral mechanical unearthing system, a hydraulic propulsion system and a rectangular shell. The cutter adopts a composite formation roller type cutter, is sleeved on the cutter driving system and is driven by the cutter driving system to rotate, the composite formation roller type cutter comprises a plurality of ordinary tools, a swinging tool and an over-excavation tool, a cutter shell adopts a round tubular component, the inner wall of the cutter shell is provided with a separating wall vertical to the axial line of the cutter shell, the ordinary tools are uniformly and fixedly arranged on the outer wall of the cutter shell, the swinging tool is hinged on the inner side of the outer wall of the cutter shell through a pin shaft and can rotate around the pin shaft, and the over-excavation tool is fixedly arranged on the outer side of the outer wall of the cutter shell. The invention has the advantages of high adaptability to formations and high tunneling efficiency. Meanwhile, construction risks can be reduced greatly, construction safety can be ensured, and the machine can adapt to construction of slightly weathered rock formations, composite formations, backfilled formations, continuous walls through the ground, pile foundations and other complex formations and working conditions.

Description

technical field [0001] The invention relates to tunnel construction equipment, in particular to a drum-type cutter head rectangular pipe jacking machine suitable for excavation of slightly weathered rock tunnels, belonging to the field of construction machinery. Background technique [0002] The rectangular pipe jacking machine is mainly suitable for the construction of underground works such as underground passages and common trenches. Through searching, it is found that the Chinese patent (Patent No.: 200920067574.5) entitled "Multi-cutter Rectangular Pipe Jacking Machine" realizes rectangular pipe jacking construction by cutting the soil with multiple cutter heads, but the multi-cutter rectangular pipe jacking machine has a fatal The weakness is that it cannot cut the whole section, which causes great disturbance to the soil and obvious extrusion. In response to this problem, "Combined Cutter Type Earth Pressure Balance Rectangular Pipe Jacking Machine" (Patent No. 02136...

AI Technical Summary

Problems solved by technology

However, the rectangular pipe jacking machines described in the above patents are only suitable for soft ground, because the cutter drives the cutter to cut the soil under the rotation of the cutter head. Once it encounters hard rock, the cutter tip will collapse, resulting in failure. continue cutting

With the continuous development of underground space, construction will face a variety of complex working conditions. For complex strata such as slightly weathered rock strata, composite strata, backfilled soil strata, passing through underground diaphragm walls, and pile foundations, the existing rectangular roof The pipe machine cannot carry out normal excavation, which brings great difficulties to the construction and even has great risks

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