END-OF-STROKE SIGNALLING DEVICE FOR A HYDRAULIC ACTUATOR

An end-of-stroke signalling device (20) for a hydraulic actuator (10) is described. The end-of-stroke signalling device (20) allows signalling the achievement of an end-of-stroke position of the main piston (14) of the hydraulic actuator and at the same time ensures that the signalling of the end-of...

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Bibliographische Detailangaben
Hauptverfasser:	PIERGIOVANNI, Alessio, DRAGANI, Teodoro Andrea, COPPOLA, Massimo, BIAGI, Bruno
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	An end-of-stroke signalling device (20) for a hydraulic actuator (10) is described. The end-of-stroke signalling device (20) allows signalling the achievement of an end-of-stroke position of the main piston (14) of the hydraulic actuator and at the same time ensures that the signalling of the end-of-stroke position is not affected by pressure variations of the hydraulic fluid contained inside the chambers of the actuator cylinder. The end-of-stroke signalling device (20) comprises: an end portion (12) of the cylinder of the hydraulic actuator; - a detecting piston (21) and a balancing piston (22) which are slidingly mounted to the cylinder end portion (12) so as to be capable of sliding through the cylinder end portion (12); - a position sensor (24) mounted to the cylinder end portion (12); - a transmission element (23) operatively interposed between said detecting and balancing pistons (21, 22).