Double screw rod electric jack

The utility model discloses a double-screw rod electrical jack; the structure includes an upper and a lower gear bases; an upper spiral wheel screw pair and a lower spiral wheel screw pair are respectively provided on the upper and lower gear bases; the upper spiral wheel is engaged with an upper wo...

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Bibliographic Details
Main Author GUIFENG LU
Format Patent
LanguageEnglish
Published 31.10.2007
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 utility model discloses a double-screw rod electrical jack; the structure includes an upper and a lower gear bases; an upper spiral wheel screw pair and a lower spiral wheel screw pair are respectively provided on the upper and lower gear bases; the upper spiral wheel is engaged with an upper worm; the lower spiral wheel is engaged with a lower worm; the upper and lower worms are respectively connected with a motor; a reversing equipment is provided between the motor and the upper and lower worms; under the effect of a position inductor, the reversing equipment can respectively control the connection between the motor and the upper and lower worms; the position inductor can induct the travel position change of the upper worm or the lower worm. During the operation, this type electrical jack can respectively control the upper and lower worms to successively turn under the effect of the reversing equipment; compared with the existing simultaneous turning of the upper and lower worms, the invention can remarkably increase the lifting force of the jack, thus beneficial to reduce the weight of the motor; the structural compact feature of the jack is good.
Bibliography:Application Number: CN2006243765U