An apparatus for selectively releasable fastening of an adjustable member over a lift path, and hydraulic system - slide valve

摘要

A device (v) for selectively releasable fastening of a by means of an adjusting device (a) by means of a lifting path of the adjustable member (g), in particular of a slide valve piston (k) of a hydraulic system - spool valve (s), in a plurality of stroke positions, with a to the axis of movement (x) parallel engagement surface (f) and at least two, transverse to the axis of movement (x) against the surface of action (f) prestressed elements, which by means of locking elements (b1, b2, b3) are formed and which, in the stroke positions in each case automatically with the engagement surface (f) in a mutual, the resistance to movement of the member (g) and which increases their engagement by means of the adjusting device is removable, wherein the engagement surface (f) of a grooving (r) of a plurality of substantially parallel to one another, by means of ribs (3) of separate grooves (2), the transverse to the axis of movement (x) and extend within the stroke travel predetermined stroke positions define, at least two locking elements (b1, b2, b3), at the same time, resiliently against the surface of action (f) are pressed, and the locking elements (b1, b2, b3) in such a manner spaced in relation to the grooves (2) is arranged..