| 摘要 |
A hydraulic shovel (1) in which a vehicle body (2) is so mounted on a traveling body (6) as to be capable of revolving comprises a boom (3) rotatably connected to the vehicle body (2); an arm (4) rotatably connected to the boom (3), a bucket (5) rotatably connected to the arm (4); a boom hydraulic cylinder (10) for driving the boom (3); an arm hydraulic cylinder (9) for driving the arm (4), a bucket hydraulic cylinder (8) for driving the bucket (5); and a boom control valve (15), an arm control valve (35) and a bucket control valve (45) for controlling the flow rates of the hydraulic oil supplied to and discharged from the respective hydraulic cylinders (8, 9, 10). The boom (3) is formed in a hollow-shape, and the bucket control valve (45) is disposed inside the boom (3).
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