INERTIA BODY DRIVE DEVICE

A pressure selector valve (13) is provided between a hydraulic motor (1) and a directional control valve (5) to connect one of main conduits (4A) , (4B) on a high pressure side to a high pressure conduit (14) while connecting the other main conduit (4A), (4B) on a low pressure side to a low pressure...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	UENO, KATSUMI, INO, KAZUYUKI
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 HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A pressure selector valve (13) is provided between a hydraulic motor (1) and a directional control valve (5) to connect one of main conduits (4A) , (4B) on a high pressure side to a high pressure conduit (14) while connecting the other main conduit (4A), (4B) on a low pressure side to a low pressure conduit (15). As an inertial body approaches a stop position, a spool valve (16) is switched to an open position (e) by pressurized oil which is supplied from an oil reservoir chamber (26) of a cylinder device (22) to an oil pressure chamber (19), bringing a branch passage (14A) of the high pressure conduit (14) into communication with the low pressure conduit (15). As soon as a pressure difference between the main conduits (4A), (4B) becomes small, the pressure selector valve (13) is automatically returned to a neutral position to cut off communication between the main conduits (4A), (4B), suppressing a reversing movement of the hydraulic motor (1) so that an inertial body can be brought to a stop smoothly, for example, even in a cold district.