Abstract: To realize a mounting structure on the rear side of the seat of the operator station on which the seat and equipment for operation are installed in the swing table of a swing-type operation machine, the mounting structure being simple in construction yet imparted with a sufficiently large strength without increasing the size of the swing table or without utilizing the counter weight. The swing-type operation machine comprises an under carriage, a swing table mounted on the under carriage so as to freely swing thereon, an operator station mounted on the swing table and on which a seat and equipment for operation are installed, and a heat exchanger-mounting body supporting a heat exchanger for cooling the engine that is positioned at the back of the seat of the operator station and supporting the rear part of the seat of the operator station.

Abstract: To realize a mounting structure on the rear side of the seat of the operator station on which the seat and equipment for operation are installed in the swing table of a swing-type operation machine, the mounting structure being simple in construction yet imparted with a sufficiently large strength without increasing the size of the swing table or without utilizing the counter weight. The swing-type operation machine comprises an under carriage, a swing table mounted on the under carriage so as to freely swing thereon, an operator station mounted on the swing table and on which a seat and equipment for operation are installed, and a heat exchanger-mounting body supporting a heat exchanger for cooling the engine that is positioned at the back of the seat of the operator station and supporting the rear part of the seat of the operator station.

Abstract: A plurality of flexible hoses for supplying hydraulic oil from a main body to a traveling motor of a traveling device and discharging hydraulic oil from the traveling motor to the main body. The hoses between the main body and each traveling device are inserted through a flexible tubular hose cover so as to be contained therein. The plurality of hoses can be bundled and protected merely by being inserted through the hose cover. Even in the bundled state, the hoses are permitted to move inside the hose cover together with a width changing movement of the traveling device. The hose cover including a flexible first material member and a second material member having greater shape retention properities than the first material member.

Abstract: A plurality of flexible hoses for supplying hydraulic oil from a main body to a traveling motor of a traveling device and discharging hydraulic oil from the traveling motor to the main body. The hoses between the main body and each traveling device are inserted through a flexible tubular hose cover so as to be contained therein. The plurality of hoses can be bundled and protected merely by being inserted through the hose cover. Even in the bundled state, the hoses are permitted to move inside the hose cover together with a width changing movement of the traveling device. The hose cover including a flexible first material member and a second material member having greater shape retention properities than the first material member.