ES430440A1 - Procedure and apparatus to avoid the blocking of rotating elements braked by pressure fluid brakes. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Method and apparatus for preventing the blocking of rotating elements braked by pressurized fluid brakes, characterized in that it comprises the phases of passing fluid under pressure to actuate the brake through a regulating valve, pushing an element of an oscillatory system towards a central state but allowing its displacement in alternate directions starting from the central state, normally maintaining the valve in a position that allows the flow in correlation with the central state of the oscillatory system element, detecting any appearance of a delay regime of the rotating element exceeding a predetermined level indicative of a tendency to block by the rotating element, to react to the excessive delay regimes detected by inducing in the element of the oscillating system energy that effects the initiation of its displacement from the central state opposing to the thrust exerted on it, interrupting the braking of the rotating element by changing the regulating valve to the blocking position of flow in correlation with the displacement of the element of the oscillating system, detecting the initiation of the recovery of the oscillatory system towards the central state, reacting to the detected initiation of the recovery by interrupting the induction of energy on the element of the oscillatory system, and continuing the periodic induction of energy on the element of the rotating system as long as the retardation regime of the rotating element is excessive. (Machine-translation by Google Translate, not legally binding)