Multi-motion-mode reconfigurable water-land-air robot

The invention discloses a reconfigurable water-land-air robot with multiple motion modes. The reconfigurable water-land-air robot is composed of a control unit, a four-foot walking unit and a four-rotor flying unit. The four-foot walking unit comprises four mechanical legs capable of achieving walking movement, and each leg is provided with two joints, namely a thigh joint and a shank joint. The shanks can be folded through connection and control of the steering engine. In addition, rollers are mounted at joint joints, and the wheels can land after the shanks are folded; the four-rotor flight unit comprises a front rotor and a rear rotor which are fixedly installed in the aircraft body and are called fixed rotors. The mounting brackets of the left rotor and the right rotor can rotate by 90 degrees along the axis and are called steering rotors. When the robot moves in water and in the air, the fixed rotors provide upward power, and the steering rotors provide advancing power for the robot and control the advancing direction. When the shanks are folded on the land, the wheels make contact with the ground to move, power is provided by the steerable rotors, and when the shanks are not folded, the robot can walk through the legs.