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US 12,258,864 B2Granted
Tunnel excavation device
AssigneeKomatsu Ltd.
InventorsMasahiro Suwano, Naoki Sekiyama, Hiroshi Asano, Taku Arakawa
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Abstract
A tunnel excavation device includes a main body a frame and a workbench. The main body includes a front body section and a rear body section. The front body section includes a cutter head provided with a plurality of disk cutters. The rear body section is disposed behind the front body section and includes a gripper section for obtaining a reaction force when excavating. The frame is disposed continuously behind the main body. The workbench is disposed above the frame so as to be rotatable with respect to the frame.
Claims17
A tunnel excavation device comprising:
- a main body including
- a front body section including a cutter head provided with a plurality of cutters and
- a rear body section including a gripper section for obtaining a reaction force during excavation, the rear body section being disposed behind the front body section;
- a frame disposed behind the main body, the frame being connected to the main body;
- and
- a workbench disposed above the frame so as to be rotatable with respect to the frame, the workbench including
- a work deck, and
- a boom supporting the work deck on the frame,
- the work deck being rotatable with respect to the frame with at least two
- different rotation radii.
7 more elements
Dependencies are inferred from the claim text.