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US 2024/0200450 A1Published application
Tunnel excavation device
AssigneeKomatsu Ltd.
InventorsNaoki SEKIYAMA, Hiroshi ASANO, Taku ARAKAWA, Shinichi TERADA, Eiichi MORIOKA
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Abstract
A tunnel excavation device includes a front body portion configured to support a cutter head and a rear body portion. The rear body portion includes a gripper carrier and a gripper portion. The gripper carrier is disposed in a rear of the front body portion. The gripper portion is provided on the gripper carrier. The gripper portion includes a groove portion and a wheel portion. The groove portion is formed in a recess shape toward the rear main body. The wheel portion is disposed in the groove portion.
Claims11
A tunnel excavation device comprising:
- a front body portion configured to support a cutter head;
- and
- a rear body portion including
- a rear main body disposed in a rear of the front body portion, and
- a gripper portion provided on the rear main body to obtain a reaction force during excavation, the gripper portion including
- a groove portion formed in a recess shape toward the rear main body, and
- a wheel portion disposed in the groove portion.
4 more elements
Dependencies are inferred from the claim text.