Hydraulic working machine
AssigneeKabushiki Kaisha Kobe Seiko Sho
InventorsEiji Maeba, Hidetoshi Suzuki
Life of this patent
Estimating the term…
Abstract
A hydraulic excavator includes a cab disposed on a front portion of a revolving upper structure. An internal combustion engine is mounted in a rear portion of the revolving upper structure, and an directional control valve is disposed in the front portion of the revolving upper structure at a position spaced laterally from the cab. The directional control valve is arranged longitudinally of the revolving upper structure. A hydraulic oil tank and a fuel tank for the internal combustion engine are disposed on either side of the directional control valve. By virtue of a space provided between the directional control valve and the cab, transmission of heat and operation noise from the directional control valve to the cab is greatly suppressed.
Claims5
A hydraulic working machine comprising:
- an undercarriage;
- a revolving upper structure rotatably mounted on said undercarriage;
- a cab provided on a front portion of said revolving upper structure;
- an internal combustion engine disposed in a rear portion of said revolving upper structure;
- a directional control valve disposed in said front portion of said revolving upper structure at a position spaced laterally from said cab and arranged along a direction extending from the rear portion to the front portion of said revolving upper structure;
- and
- a hydraulic oil tank and a fuel tank for said internal combustion engine that are disposed in said revolving upper structure, wherein said hydraulic oil tank is disposed between said directional control valve and said cab.
A hydraulic working machine comprising;
- an undercarriage;
- a revolving upper structure rotatably mounted on said undercarriage;
- a cab provided on a front portion of said revolving upper structure;
- an internal combustion engine disposed in a rear portion of said revolving upper structure;
- a directional control valve disposed in said front portion of said revolving upper structure at a position spaced laterally from said cab and arranged along a direction extending from the rear portion to the front portion of said revolving upper structure;
- and
- a hydraulic oil tank and a fuel tank for said internal combustion engine that are disposed in said revolving upper structure, wherein said fuel tank is disposed between said directional control valve and said cab.
A hydraulic working machine comprising:
- an undercarriage;
- a revolving upper structure rotatably mounted on said undercarriage;
- a cab provided on a front portion of said revolving upper structure;
- a directional control valve disposed in said front portion of said revolving upper structure at a position spaced laterally from said cab and arranged along a direction extending from the rear portion to the front portion of said revolving upper structure;
- and
- an internal combustion engine disposed in a rear portion of said revolving upper structure, wherein said internal combustion engine includes a cooling fan, said cooling fan being so arranged as to force air toward said directional control valve;
- a hydraulic oil tank and a fuel tank for said internal combustion engine that are disposed in said revolving upper structure.
Dependencies are inferred from the claim text.