Wind wheel locking device and control method thereof

The invention discloses a wind wheel locking device and a control method thereof.The wind wheel locking device comprises a base and a locking disc arranged at one end of the base, a locking pin is slidably arranged in the base, a locking hole matched with the front end of the locking pin is formed in the locking disc, an oil cavity is formed in the locking pin, a push rod is fixedly arranged in the base, and a piston located in the oil cavity is fixedly arranged at one end of the push rod; the piston seals the cross section of the oil cavity, and a first oil channel and a second oil channel which are communicated with the two sides of the piston respectively are arranged in the push rod and the piston. The hydraulic locking device has the advantages that oil inlet or oil return is controlled through the first oil channel and the second oil channel, the amount of oil in the oil cavity is adjusted, bidirectional pressure driving of the oil to the piston is achieved, then double acting force on the locking pin i