Locking and unlocking device for aircraft

The invention discloses a locking and unlocking device for an aircraft. The device comprises a pin puller and a driving circuit, the pin puller comprises an insulating bottom plate, a supporting seat,a shaft rod, an insulating terminal, a fusible tensioning rope and a positioning copper column, the supporting seat and the positioning copper column are fixed to the insulating bottom plate, one endof the shaft rod is fixedly connected with the insulating terminal, the other end of the shaft rod is arranged on the supporting base, a pre-tightening mechanism is arranged between the shaft rod andthe supporting seat, the two ends of the fusible tightening rope are fixed to the positioning copper column, the fusible tensioning rope is connected into the driving circuit, in the locking state, the driving circuit is disconnected, pre-tightening force exists between the shaft rod and the supporting base, in the unlocking process, the driving circuit is connected, the fusible tensioning rope is electrified and fused, th