The invention discloses a car lifting jack with a fall preventing function. The car lifting jack comprises a lifting jack body of the car lifting jack, a support jack mechanism used for lifting a car body and a lead screw vertically arranged in the lifting jack body, wherein the support jack mechanism can move up and down along the lifting jack body, a work nut is arranged on the lead screw in a fit manner, and the work nut is fixedly connected to the support jack mechanism. The car lifting jack is characterized in that a safety nut is further arranged on the lead screw in a fit manner, and the safety nut is arranged below the work nut at an interval; and a connecting plate capable of being compressed in the axial direction of the lead screw is fixedly connected between the work nut and the safety nut, and the work nut and the safety nut can synchronously move around the lead screw under the action of the connecting plate. The car lifting jack has the advantages of being simple in structure, easy to manufacture, low in maintenance cost, high in reliability, favorable to prolonging the service life of the car lifting jack and improving safety, and the like.
Car lifting jack with fall preventing function
2016-02-03
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 |