Unhooking and hooking device and control method thereof

The invention relates to the field of vehicle accessories, in particular to an unhooking and hooking device and a control method thereof, and the unhooking and hooking device comprises a coupler, a coupler knuckle, a coupler pin, a coupler lifting rod, a fixed base fixedly connected to a vehicle frame and a driving mechanism; wherein the coupler is fixedly connected on the vehicle frame, the coupler knuckle is rotatably connected with the coupler , and the coupler knuckle has the movement trend of being away from the coupler to be in an open state; the coupler pin is arranged on the coupler and can move along the coupler so as to lock the coupler knuckle; the coupler lifting rod is rotatably connected with the fixed base; the coupler lifting rod is connected with the coupler pin; the driving mechanism is in driving connection with the coupler lifting rod so that the coupler lifting rod can rotate relative to the fixed base, and then one part of the coupler pin extends out of the coupler to open the coupler kn