Double-column lifting machine easy to position and having cleaning function

The invention discloses a double-column lifting machine easy to position and having cleaning function. The machine comprises a base, stand columns are symmetrically connected on the upper part of thebase. The bottoms of the two stand columns are symmetrically provided with bolts. The upper ends of two hydraulic cylinders are connected with hydraulic telescopic rods. Lifting platforms are arrangedon the upper part of the two hydraulic telescopic rods. One side of the two lifting platforms is connected with an outer rod. A rotating shaft is arranged on the upper part of one side of the outer rod. An inner rod is disposed in the outer rod. A limit block is disposed on a side of the upper part of the inner rod, close to the outer rod. An oil pump is connected to the upper part of two oil tanks, An AT89S52 controller is fixedly disposed on the middle part of the outer side of the stand column. A beam is connected with a water pipe by a buckle. The machine is provided with a positioning device, and a vehicle can dr