The utility model belongs to
lifting equipment technical field, concretely is a kind of novel double-column lifting
machine, including left and right column of relative arrangement, the trolley is slidably arranged in left and right column, and the top and bottom of left and right column are equipped with
wire rope wheel, first mounting shaft is equipped in left and right column, and
wire rope wheel is installed on first mounting shaft by first bearing;First mounting shaft inside is equipped with first oil circuit, and first oil circuit is communicated with first bearing, first mounting shaft end face is embedded with first oil
nozzle, and first oil
nozzle is communicated with first oil circuit, ensure the smooth rotation of
wire rope wheel, improve service life;It further includes a group of oil cylinders respectively arranged in left column and right column, the wheel frame is arranged at the end of the
piston rod of oil cylinder, the step surface and the snap spring groove are arranged at the end of the
piston rod of oil cylinder, the bottom surface of the wheel frame is arranged on the step surface by penetrating the
piston rod, the wheel frame and the
piston rod are locked by installing the snap spring in the snap spring groove, and the quick-release structure is used between oil cylinder and wheel frame, so that the wheel frame can be removed by removing the snap spring, and the maintenance in later period is facilitated.