| 摘要 |
<p>A system for monitoring the position of a machine component, whose drive is provided with an electrohydraulic drive system which, in order to control the forward and backward movements of this machine component, comprises a follow-up adjusting valve that operates with an electrically-controlled indication of the set value and with a mechanical announcement of the actual position; the monitoring system is provided with a mechanical conversion device which converts the deflections of the servocomponent of the follow-up adjusting valve (14) into larger deflections, correlated therewith, of the mechanical operating element of a proximity switch (40) which, seen in the deflection direction of its operating element, is arranged at a defined distance in relation to the position adopted by the operating element when the servocomponent of the follow-up adjusting valve (14) is located in its characteristic basic setting for equivalence of the set and actual value. The proximity switch envisaged is a Hall generator (56), into whose field aperture projects the edge of a switching arm (41) which can be driven rotationally by the deflection movements of the servocomponent (14) of the follow-up adjusting valve.</p> |
