The invention discloses a mounting structure of a lead screw for a car lifting jack. The mounting structure comprises a lifting jack body of the car lifting jack and a lead screw vertically arranged in the lifting jack body, wherein a round mounting hole is formed in a top plate of the lifting jack body, a lead screw mounting sleeve which is cylindrical as a whole is fixedly arranged in the mounting hole in a sleeving manner, a flange projecting outwards is arranged at the upper end of the lead screw mounting sleeve, and the flange is fixed to the top plate of the lifting jack body through a bolt; a first thrust bearing is arranged in the lead screw mounting sleeve; a first shaft section, a limit section and a second shaft section are sequentially arranged at the upper end of the lead screw from top to bottom, and both the diameter of the first shaft section and the diameter of the second shaft section are smaller than the diameter of the limit section; and a second thrust bearing is mounted on the first shaft section in a fit manner. The mounting structure has the advantages that the mounting structure is simple, is convenient to mount and is favorable to improving assembling efficiency, the lead screw is convenient to maintain, the service life of the lead screw is prolonged, and the like.
Mounting structure of lead screw for car lifting jack
2016-02-03
Patent
Electronic Resource
English
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 |
Multi-stage jack structure with single-stage lead screw driving multiple lead screw nuts
European Patent Office | 2022
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