For bridge repair jacking (Jacking) Apparatus and method

摘要

A cylinder of varying diameters is installed into the main pump body(2), which is connected to an oil tank(1) and to inlet pipes(6,6',6"). Pistons(4,4',4") are independently operated by working levers(3,3',3"). Compressed oil, which flows out of the cylinder, is transmitted to the hoses(12,12',12") through several branch pipes(9,9',9"). By using the compressed oil,which is transmitted to the jack, a bridge can be supported and repaired.