| 摘要 |
PROBLEM TO BE SOLVED: To improve a workability by saving a piping connecting work in a valve housing section when a control valve, in which a plurality of control valves are incorporated, is assembled to the valve housing section. SOLUTION: In a hydraulic shovel, a plurality of piping 43 such as piping connected on a hydraulic pump side, piping connected on the oil tank side, piping connected on the hydraulic actuator side or the like are connected to the control valve 36. The hydraulic shovel is constituted so that the control valve 36 is installed to a support member together with these piping 43 and a control-valve assay A is formed, and the control-valve assay A is assembled to the valve housing section. COPYRIGHT: (C)2005,JPO&NCIPI
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