The invention discloses a two-column and double-pulling-up hydraulic lifting machine, and belongs to the technology of automobile maintenance industry lifting machine manufacturing. The hydraulic lifting machine comprises sliding table assemblies, piston rods, hydraulic oil cylinders, top plate assemblies, a cross beam and stand column assemblies. The hydraulic lifting machine is characterized in that the sliding table assemblies are arranged in cavities of the stand column assemblies, the hydraulic oil cylinders are installed in cavities of the sliding table assemblies, the ends of the piston rods of the hydraulic oil cylinders are fixed to the sliding table assemblies, and the cylinder bottom ends of the hydraulic oil cylinders are fixed to the lower portions of the top cover assemblies; oil inlets of the hydraulic oil cylinders are formed in rod cavities of the hydraulic oil cylinders; the cylinder barrel inner sides, close to the cylinder bottom ends, of the hydraulic oil cylinders are provided with piston sealing piece oil swapping grooves; and the sliding table assemblies of the two-column and double-pulling-up hydraulic lifting machine do not need to be leveled through steel wire ropes. The hydraulic oil cylinders are more conveniently installed in an inverted manner, space is saved, and cost is reduced. The hydraulic oil cylinders pull the sliding table assemblies to rise and fall more stably. The oil swapping grooves are formed in the hydraulic oil cylinders, the balance of the sliding table assemblies is directly adjusted, and convenience and rapidness are achieved.


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    Title :

    Two-column and double-pulling-up hydraulic lifting machine


    Contributors:

    Publication date :

    2015-12-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    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



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