| 摘要 |
<p>A rotary slide valve controlling the pneumatic or hydraulic pressure medium to several double-acting cylinders, has a cylindrical chamber housing a cylindrical rotary piston (3) with two ring grooves, two cut-outs (12, 13) and connecting bores (14, 15) for each connection between groove and cut-out such that by periodically turning through 90 deg., the piston (3) so controls the feed and return of the pressure medium that in the switch position for feeding the pressure medium for the piston of one drive cylinder (A, B) moving under full pressure the control already results to feed the pressure medium for the piston of another drive cylinder (A or B) which is in the dead point position.</p> |
