The invention discloses a multi-rod balance jack which comprises a hydraulic cylinder body and a hydraulic cylinder cover, wherein a piston is arranged in the hydraulic cylinder body and is connected with the inner wall of the hydraulic cylinder body in a sliding manner; a plurality of thin piston rods are arranged on the piston; a plurality of through holes are formed in the hydraulic cylinder cover; the positions of the multiple through holes correspond to those of the multiple thin piston rods; a groove is formed in the bottom of the hydraulic cylinder body. Due to the mode, the multi-rod balance jack is simple and reasonable in structure and is relatively good in balance performance during use.
Multi-rod balance jack
08.04.2015
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 |