CONSTRUCTION MACHINE

Abstract: a control valve () for travel is provided in a lower traveling structure () to control the flow of operating oil to be delivered to a hydraulic motor () for travel from a hydraulic pump (). an operating oil tank () and the hydraulic motor () for travel is connected by a hydraulic pipe (). the hydraulic pipe () is configured of a supply low-pressure pipe part (a), a pump-side high-pressure pipe part (b) and a valve-side high-pressure pipe part (c) for connection between the operating oil tank (), the hydraulic pump () and the control valve () for travel, switching high-pressure pipe parts (d, e) that are provided in the lower traveling structure () for connection between the control valve () for travel motor and the hydraulic motor () for travel, and a valve-side low-pressure pipe part (f) and a tank-side low-pressure pipe part (g) that are provided across from the lower traveling structure () to the upper revolving structure () to establish connection between the control valve () for travel motor and the operating oil tank ().

Inventor(s): Takeshi HONDA, Hajime OKANO, Yuuji MURAYAMA, Yoshitaka YANASE

CPC Classification: E02F9/2253 (DREDGING; SOIL-SHIFTING (winning peat ))

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