Komatsu Corporation

Masahiro Suwano

Hiroshi Asano

Naoki Sekiyama

Taku Arakawa

Eishi Nakamura

Kouichi Kasahara

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.

Tunnel excavation device

The 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, and a vertical shoe. The rear body section is disposed to a rear of the front body section and includes a gripper section for obtaining a reaction force when excavating. The cutter head includes a plurality of roller cutters. The cutter head support supports the cutter head. The vertical shoe is disposed below the cutter head support and is provided in a turnable manner to the cutter head support.

A cooling device includes a first radiator core, a second radiator core, a fan, a ventilation component, and a blocked part. The first radiator core and the second radiator core () are disposed adjacently with a specific space in between. The fan supplies air to the first radiator core and the second radiator core. The ventilation component is formed in part of the specific space and transmits air supplied from the fan. The blocked part is formed by a blocking member disposed in a different part of the specific space from the ventilation component.

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Nara, Japan

Masahiro Suwano