Positioning tool and method for adjustable wind power blade main beam

The invention discloses a positioning tool and method for an adjustable wind power blade main beam. A fixing mechanism is fixedly connected with a die steel frame of a blade die and connected with a length adjusting mechanism through a vertical inserting pipe and a first transverse branch pipe. A positioning mechanism is connected with the length adjusting mechanism through a second transverse branch pipe and a vertical positioning pipe. The distance between the vertical positioning pipe and the vertical inserting pipe is adjusted through the length adjusting mechanism, so that the side face of the free end of the vertical positioning pipe is attached to the end portion of the main beam. According to the positioning tool for the main beam, the positioning tool and the die steel frame of the blade die are fixed through the fixing mechanism, and the chordwise size of the positioning tool is changed through the length adjusting mechanism and the positioning mechanism, so that the positioning tool adapts to posit