Jack

The utility model discloses a jack which comprises a box. A lead screw penetrates through the box and a blind nut is arranged on one end of the lead screw. The blind nut is fixed with the box and is provided with a sleeve and a sleeve cover. A protection sleeve is arranged on the other end of the le...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHEN RUIZHE, CHENG QIANGHE, WEN CHENGZHI, SONG ZHENSHU, HUANG HAIYAN, YANG JUN, FENG SHIWU, ZHU LEI
Format:	Patent
Sprache:	chi ; 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:	The utility model discloses a jack which comprises a box. A lead screw penetrates through the box and a blind nut is arranged on one end of the lead screw. The blind nut is fixed with the box and is provided with a sleeve and a sleeve cover. A protection sleeve is arranged on the other end of the lead screw and is fixed with the box. A worm gear is sleeved on the lead screw and a worm matched with the worm gear is arranged inside the box. By use of the structure of the jack, people lay the jack under the objects waiting to be supported before use, revolve the worm to drive the worm gear linked to the worm to rotate. As the worm is sleeved on the lead screw, the rotation of the worm drives the lead screw to extend out to jack up the objects waiting to be supported. The jack is simple in structure, convenient to operate, low in cost of production and accordingly is favorable to popularize.