| 摘要 |
<p>A method and an apparatus for controlling the function of all kinds of reciprocatable power machines which are actuated by means of a pneumatic, hydraulic of any other pressure fluid, irrespective if the machines are of rotary or axially operating type, in which the active power stroke is accomplished using full power of pressure fluid against a reciprocatable piston (2) in the active air pressure chamber (10, 12), and in which the reversing of the direction of operation is made by alternatingly supplying pressure fluid to the opposite air pressure chamber (12, 10) of the machine, said valve comprises a valve poppet (6) having several channels providing means (7) for alternatingly placing one of the pressure chambers (10, 12) of the reciprocatable fluid actuated machine (1, 2) under full pressure, means (8) for building up a certain counter pressure in a pressure chamber which is, at the actual moment, inactive, and means (9) for evacuating the pressure from an inactive pressure chamber of the fluid actuated machine.</p> |
