TABLE LIFTING APPARATUS

PROBLEM TO BE SOLVED: To reduce vibration upon moving up and down of a table, for solving a problem that a table lifting apparatus, which moves up and down the table parallel using an X-shaped lift arm interposed between a base placed on a floor and the table for loading a cargo, causes large vibrat...

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Bibliographische Detailangaben
Hauptverfasser:	OSHIMA KENTA, ODAGUCHI TSUTOMU, HORI SUKEMASA
Format:	Patent
Sprache:	eng
Schlagworte:	HAULING 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 LIFTING PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce vibration upon moving up and down of a table, for solving a problem that a table lifting apparatus, which moves up and down the table parallel using an X-shaped lift arm interposed between a base placed on a floor and the table for loading a cargo, causes large vibration upon a start of moving up and down of the table due to high stiffness in a configuration using an electric cylinder that mainly uses a ball screw mechanism as a drive source.SOLUTION: In place of the ball screw mechanism, a movable block mechanism 30 is employed for a driving device which uses an electric motor as the drive source. A drive chain 33 as a connection member of the movable block mechanism 30 has lower stiffness than the ball screw mechanism, so that vibration upon moving up and down of the table is absorbed by elongation of the same.