Planet wheel type profiling excavation device for construction of rectangular-cross-section tunnel

Abstract

The invention provides a planet wheel type profiling excavation device for construction of a rectangular-cross-section tunnel which is used for solving the problems that an excavation bland area is large, a cutting effect of soil mass is poor, the structure is complex, the adaptability of the cross section is poor existing in an existing excavation device. The plant wheel type profiling excavationdevice comprises a cutter disc, a planet wheel, a planet wheel shaft, a planet carrier, a large gear ring and a shield body. The cutter disc is in a water-drop shape, and the rear portion of the cutter disc is engaged with the planet wheel shaft. The planet wheel shaft is connected with the planet carrier through a bearing, and the rear portion of the planet carrier is connected with an externaldriving device. The planet wheel is arranged on the planet wheel shaft, the planet wheel is arranged in the large gear ring, the planet wheel is engaged with the large gear ring, and the outer side ofthe large gear ring is fixed to the shield body. The planet wheel type profiling excavation device ensures full-section excavation, different excavation sections can be formed, excavation of rectangular-cross-section tunnels in various specifications can be achieved, and the good economical efficiency, adaptability and reliability are achieved. Meanwhile, the planet wheel type profiling excavation device has a good soil mass cutting effect and good cross section adaptability.

Description

technical field [0001] The invention relates to the technical field of underground space construction, in particular to a planetary wheel type profiling excavation device for tunnel construction with a rectangular section. Background technique [0002] The overall excavation space utilization rate of the rectangular roadheader is high, the excavation earthwork is less, and the interference to the surrounding environment is small. It is especially suitable for municipal projects with rectangular cross-sections such as street tunnels, subway entrances and exits, comprehensive pipe corridors, and underground parking lots. At present, excavation devices with rectangular cross-section include central shaft type and eccentric shaft type according to the drive shaft form, and circular, rectangular and single cutter head profiling according to the shape of the cutter head. However, this type of excavation device has the problems of large excavation blind area, poor soil cutting effe...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problems of existing excavation devices such as large excavation blind area, poor soil cutting effect, complex structure, and poor cross-section adaptability, the present invention proposes a planetary wheel-type profiling excavation for tunnel construction with rectangular cross-section device

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