A LIFTING VEHICLE WITH A TELESCOPIC LIFTING ARM PROVIDED WITH A SHOCK ABSORBER SYSTEM

A lifting vehicle comprising: - a self-propelled chassis (12), - a telescopic arm (18) provided at a distal end with a implement-mounting attachment (22) and including a base section (30) articulated to the chassis (12) and at least one telescopic section (32), - at least one lifting cylinder (28) a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MERLO, Amilcare, CONTESSINI, Felice
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HAULING HEATING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIFTING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A lifting vehicle comprising: - a self-propelled chassis (12), - a telescopic arm (18) provided at a distal end with a implement-mounting attachment (22) and including a base section (30) articulated to the chassis (12) and at least one telescopic section (32), - at least one lifting cylinder (28) arranged between the telescopic arm (18) and the chassis (12), - at least one extension cylinder (34) arranged to control the movement of said at least one telescopic section (32) between a retracted position and a plurality of extracted positions, - a hydraulic circuit (36) including a hydraulic distributor (40) connected to said extension cylinder (34) via a first and a second hydraulic line (42, 44) connected, respectively, to a first and to a second chamber (46, 48) of the extension cylinder (34), wherein a pressure-controlled block valve (52) is arranged on said first hydraulic line (42), wherein the hydraulic circuit (36) comprises a shock absorber system (54) including at least one gas accumulator (56) connected to a portion of said first hydraulic line (42) comprised between said first chamber (46) of the extension cylinder (34) and said block valve (52).