CONTROL METHOD FOR HYDRAULIC JACK

PROBLEM TO BE SOLVED: To provide the control method of a hydraulic jack controlled to the characteristic line of an acute anglular and linear, etc., according to purpose by using an inexpensive instrument at the changing time of a displacement and load by an operation pressure. SOLUTION: At the cont...

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Bibliographische Detailangaben
1. Verfasser:	HOSOBUCHI SEIJI
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 provide the control method of a hydraulic jack controlled to the characteristic line of an acute anglular and linear, etc., according to purpose by using an inexpensive instrument at the changing time of a displacement and load by an operation pressure. SOLUTION: At the control time of the displacement of a test body 12 by a hydraulic jack 10, an initial pressure is applied to the push side and pull side respectively at the same time and the operation pressure more than the initial pressure of at least either other side of the push side and pull side is applied to at least either oneside of the push side and pull side in order to control the displacement of the test body 12. At the control time of the load of the test body 12 by the hydraulic jack 10, the initial pressure is applied to the push side and pull side respectively at the same time and the operation pressure more than the initial pressure of at least either otherside of the push side and pull side to at least either oneside of the push side and pull side in order to control the load of the test body 12 is applied.