LIFTING DEVICE

A lifting device comprises a hydraulic cylinder (1), the piston (3) of which is connected through a flexible coupling (6) to a lifting reservoir (7). The flexible coupling (6) at the point of its outlet from the cylinder (1) is passed through a sealing unit (9) consisting of two consecutive chambers...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NEGRUTSKY, SERGEI BORISOVICH, CHURKIN, VLADIMIR GAVRILOVICH, CHUNIKHIN, MIKHAIL IVANOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	BLASTING CYLINDERS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR ELEVATORS ENGINEERING ELEMENTS AND UNITS ESCALATORS OR MOVING WALKWAYS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HAULING HEATING HOISTING HYDRAULICS OR PNEUMATICS IN GENERAL LIFTING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PISTONS SEALINGS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A lifting device comprises a hydraulic cylinder (1), the piston (3) of which is connected through a flexible coupling (6) to a lifting reservoir (7). The flexible coupling (6) at the point of its outlet from the cylinder (1) is passed through a sealing unit (9) consisting of two consecutive chambers (10, 11) divided with sealing elements (12, 13, 14). The chamber (10) adjacent to the hollow of the casing is filled with a viscous liquid, the viscosity of which is higher than that of the working liquid whereas the other chamber (11) is connected to a separator (18) adapted for separation of the working and viscous liquids and their feeding, correspondingly, to the hollow (4) of the cylinder and to the chamber (10) of the sealing unit (9). Un dispositif de levage comprend un cylindre hydraulique (1) dont le piston (3) est connecté par l'intermédiaire d'un accouplementfléxible (6) à un réservoir de levage (7). Au point de sortie du cylindre (1), l'accouplement flexible (6) passe au travers d'une unité d'étanchéité (9) consistant en deux chambres consécutives (10, 11) divisées par des éléments d'étanchéité (12, 13, 14). La chambre (10) adjacente aux creux du boîtier est remplie d'un liquide visqueux dont la viscosité est supérieure à celle du liquide de travail, tandis que l'autre chambre (11) est connectée à un séparateur (18) adapté pour la séparation des liquides de travail et visqueux et leur alimentation correspondante au creux (4) du cylindre et à la chambre (10) de l'unité d'étanchéité (9).