The invention discloses a shear type jack and belongs to the field of automobile equipment. The shear type jack comprises a supporting seat, a base, a pair of upper arms and a pair of lower arms, wherein one end of each upper arm is mounted on the supporting seat and the other end of each upper arm and one end of each lower arm are connected by two hinging shafts; the other end of each lower arm is mounted on the base; a screw rod is arranged between the two hinging shafts in a penetrating manner; a foldable reinforcing plate is fixedly mounted at the bottom of the base; the foldable reinforcing plate comprises two steel plates; the two steel plates are hinged with the base respectively, and can be expanded towards the two opposite sides of the base. The foldable reinforcing plate is arranged at the bottom of the base so that the contact area between the whole jack and the ground is enlarged while the normal structure is guaranteed, and furthermore, the jack can be applicable to various overweight environments and the damages to the road surface are avoided.
Shear type jack
2015-08-05
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 |