| 摘要 |
PROBLEM TO BE SOLVED: To provide a tunnel work truck which can enhance the degree of freedom when traveling in a tunnel. SOLUTION: This tunnel work truck for use in the construction of the tunnel comprises a driving section which includes a crawler track, and a driven section which includes wheels. The wheel includes a gentle slope face, and the diameter of the wheel is smaller than the width of the wheel. COPYRIGHT: (C)2009,JPO&INPIT
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