| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an attachment device for work device control hydraulic valve of construction machine, capable of reducing operation time for attaching and assembling various valve blocks to an upper structure. <P>SOLUTION: The device comprises a work device including a boom, an arm and a bucket driven by hydraulic cylinders; a main control valve 12 switched according to an operation signal from an operation lever, which includes respective spools for controlling the quantity and flowing direction of working fluid supplied to the work device; an option valve 15 for controlling the working fluid supplied to the main control valve; and valve blocks 16a and 16b coupling and connecting the main control valve and the option valve by hydraulic piping S. The main control valve, the option valve and the valve blocks are set on a sub-plate 17, and these vales are coupled and connected by the hydraulic piping, and then installed to the upper structure 2. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
