Tunnel excavation device
AssigneeKomatsu Ltd.
InventorsNaoki Sekiyama, Taku Arakawa, Hiroshi Asano, Shinichi Terada, Eiichi Morioka
Life of this patent
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Abstract
A tunnel excavation device includes a front body section and a rear body section. The front body section includes a cutter head, a cutter head support, peripheral plates, a roof shoe, and side shoes. The cutter head includes a plurality of roller cutters. The cutter head support supports the cutter head. The peripheral plates, the roof shoe, and the side shoes are provided to the outer circumference and can be collapsed inward. The rear body section is disposed to the rear of the front body section. The rear body section includes a gripper section. The gripper section obtains a reaction force for performing excavation.
Claims19
A tunnel excavation device comprising:
- a front body section including a cutter head including a plurality of cutters, a cutter head support section supporting the cutter head, and a collapsing section provided to an outer circumference of the front body section, the collapsing section being configured to be collapsed toward an inside;
- and
- a rear body section including a gripper section for obtaining a reaction force when excavating, the rear body section being disposed to a rear of the front body section,
- the collapsing section including a circumferential edge plate disposed on a circumferential edge of the cutter head,
- the circumferential edge plate being coupled to a side surface of the cutter head in a collapsible manner via a coupling section, and
- the circumferential edge plate being collapsible by rotating about the coupling section from a first position in which the circumferential edge plate protrudes outwardly from the side surface of the cutter head to a second position in which the circumferential edge plate is disposed further inward than the side surface of the cutter head.
A tunnel excavation device comprising:
- a front body section including a cutter head including a plurality of cutters, a cutter head support section supporting the cutter head, and a collapsing section provided to an outer circumference of the front body section, the collapsing section being configured to be collapsed toward an inside;
- and
- a rear body section including a gripper section for obtaining a reaction force when excavating, the rear body section being disposed to a rear of the front body section,
- the collapsing section including a lateral shoe disposed lateral to the cutter head support section, and
- the lateral shoe including
- a lateral shoe front section connected to the cutter head support section, and
- a lateral shoe rear section disposed on a rear side of the lateral shoe front section and coupled in a turnable manner to the lateral shoe front section, and
- the lateral shoe rear section being configured so that a rear end of the lateral shoe rear section is turnable in a horizontal direction about a coupling section with the lateral shoe front section.
A tunnel excavation device comprising:
- a front body section including a cutter head including a plurality of cutters, a cutter head support section supporting the cutter head, and a collapsing section provided to an outer circumference of the front body section, the collapsing section being configured to be collapsed toward an inside;
- and
- a rear body section including a gripper section for obtaining a reaction force when excavating, the rear body section being disposed to a rear of the front body section,
- the collapsing section including an upper shoe disposed above the cutter head support section, and
- the upper shoe including
- an upper shoe front section connected to the cutter head support section, and
- an upper shoe rear section disposed on a rear side of the upper shoe front section and coupled in a turnable manner to the upper shoe front section, and
- the upper shoe rear section being configured so that a rear end of the upper shoe rear section is turnable in a vertical direction about a coupling section with the upper shoe front section.
Dependencies are inferred from the claim text.