The invention provides a jack with a following structure. The jack comprises a base, support arms, a screw rod, a rotary handle, a plastic nut, a reinforcing block, a bearing, a support block, a cross beam rod, a screw rod head connection block, a steel tube and rivets and is characterized in that the base is connected with the support arms by means of the rivets in a riveting manner; the support block is connected with the support arms by means of the rivets in a riveting manner; the support arms are connected with the reinforcing block by means of the cross beam rod; the plastic nut is arranged in the reinforcing block; the screw rod head connection block is welded with the screw rod for fixation; after the bearing penetrates into the screw rod, the screw rod penetrates through reinforcing part nut assemblies of the support arms after penetrating through the steel tube by means of the cross beam rod arranged in the support arms and used for stamping the steel tube to be fixed onto the screw rod; and finally the rotary handle is installed on the screw rod head connection block. The jack is small in size, low in weight, high in bearing performance, simple in structure, convenient in operation and stable in all performance and can be repeatedly used.
Jack
2016-01-27
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 |