MULTI-CIRCLE RING ASSEMBLY TYPE SHIELD CUTTER HEAD AND WORKING METHOD

Disclosed is a multi-circle ring assembly type shield cutter head, comprising a central cutter head (3) and a plurality of ring-shaped cutter heads (2) which are driven to rotate independently from one another; the ring-shaped cutter heads (2) are independently driven by a plurality of driving devic...

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Bibliographic Details
Main Authors SHI, Rongjian, ZHANG, Yong, LU, Lu, YUE, Fengtian, HUANG, Feng
Format Patent
LanguageChinese
English
French
Published 20.10.2022
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:Disclosed is a multi-circle ring assembly type shield cutter head, comprising a central cutter head (3) and a plurality of ring-shaped cutter heads (2) which are driven to rotate independently from one another; the ring-shaped cutter heads (2) are independently driven by a plurality of driving devices (5) to rotate around extendable and retractable auxiliary shafts that are fixed on a shield tunneling machine; a main shaft of the shield tunneling machine only needs to drive the central cutter head to rotate, which reduces the strength of the main shaft and driving force requirements, which facilitates enlarging the diameter of the entire cutter head of the shield tunneling machine. The width and the assembly number of the ring-shaped cutter heads are adjusted according to tunnel diameter and engineering geological conditions, and thus shield cutter heads having different diameters may be formed; the number and strength requirements of the extendable and retractable auxiliary shafts and driving devices surroun
Bibliography:Application Number: WO2021CN126538