TWE-STAGE HYDRAULIC JACK

The two-stage hydraulic jack of the utility model belongs to the field of power jacking equipment. The two-stage hydraulic jack adopts the structure of installing a two-stage rod in a first stage rod. The two-stage hydraulic jack uses a concave bowl pad and an oil-resistant rubber ring to seal the i...

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Bibliographic Details
Main Author LU HEPING
Format Patent
LanguageEnglish
Published 28.08.1991
Edition5
Subjects
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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Summary:The two-stage hydraulic jack of the utility model belongs to the field of power jacking equipment. The two-stage hydraulic jack adopts the structure of installing a two-stage rod in a first stage rod. The two-stage hydraulic jack uses a concave bowl pad and an oil-resistant rubber ring to seal the inner bottom of a hydraulic cylinder without weld. The utility model has the advantages of high rate of one time finished products, low self-altitude, high jacking altitude, portability, easy use, etc.
Bibliography:Application Number: CN1991203991U