JPS6115034B

PURPOSE:To provide a method of locking hydraulic elevator at its stop position, in which hydraulic circuits connected respectively to loaded-side oil chamber and unloaded-side oil chamber, formed in a hydraulic cylinder working to lift and lower the cage, are both blocked and locked while keeping pr...

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Bibliographic Details
Main Authors MINATO YOSHIO, TAKAGUCHI NAOTAKE
Format Patent
LanguageEnglish
Published 22.04.1986
Subjects
BLASTING
CAPSTANS
DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
FLUID-PRESSURE ACTUATORS
FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS
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
HOISTS
HYDRAULICS OR PNEUMATICS IN GENERAL
LIFTING
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
TACKLES, e.g. PULLEY BLOCKS
TRANSPORTING
WEAPONS
WINCHES
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Summary:PURPOSE:To provide a method of locking hydraulic elevator at its stop position, in which hydraulic circuits connected respectively to loaded-side oil chamber and unloaded-side oil chamber, formed in a hydraulic cylinder working to lift and lower the cage, are both blocked and locked while keeping pressure in the unloaded-side oil chamber, whereby shifting of the cage at the stop position due to load change can be minimized.
Bibliography:Application Number: JP19760094225