Shield machine capable of digging with enlarged diameter
专利汇可以提供Shield machine capable of digging with enlarged diameter专利检索，专利查询，专利分析的服务。并且PURPOSE:To provide a shield machine, capable of digging with an enlarged diameter, suitably used for constructing a shaft for access for constructing very deep underground railroads, roads, or three-dimensional structure, or for underground connection mutually between very long distance horizontal shield machines. CONSTITUTION:A plural number of spokes 3b and 3c capable of being extended or retracted are attached to the end of a center shaft 4 driven to rotate. Cutter bit support plate 3d and 3c each having a cutter bit 3 are respectively attached to the spokes 3b and 3c. Two pressure resistance partition walls 1b and 1c are arranged side by side in the outer shell 1a of a shield machine. The partition walls 1b and 1c are respectively provided with hatches 5a and 5b for allowing inward and outward passages of persons and materials. The center shaft 4 of the cutter bit 3 is supported for free rotation in the center of the partition walls 1b and 1c. This contributes greatly to the construction of the base of very deep shaft or underground connection in shield construction process.，下面是Shield machine capable of digging with enlarged diameter专利的具体信息内容。
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