The invention discloses a jack. The jack consists of a lifting sleeve, a nut, a thrust bearing, a rocker arm, a gear, a square-head flat key, a round-head flat key, a screw, a shell and a base, wherein the screw is inserted in the shell; the round-head flat key is arranged on the screw; the square-head flat key sleeves the screw; concave and convex teeth arranged on the round-head flat key and the square-head flat key are gripped with each other; the gear is arranged on the right side of the square-head flat key; the thrust bearing is arranged on the top of the screw; the rocker arm is transversely inserted in the thrust bearing; the thrust bearing is inserted in the lifting sleeve and is fixed through the nut arranged on the right side of the lifting sleeve; and the base is arranged on the bottom of the shell. The jack is exquisite in structure and convenient to carry and can jack up tonnage heavy objects.
Jack
02.09.2015
Patent
Elektronische Ressource
Englisch
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |