Propeller suspension device

The invention relates to a propeller suspension device which comprises a plurality of suspenders, a plurality of suspender supporting mechanisms and a controller, each suspender supporting mechanism comprises two supporting seats and a locking piece, and the two supporting seats are provided with arc surfaces which are oppositely arranged; the two supporting seats are locked through locking pieces so that the arc faces of the supporting seats can be combined to form arc-shaped supporting faces used for supporting the propeller and matched with the circumferential radian of the supporting seats, and the multiple arc-shaped supporting faces can be installed on the ground in the propelling direction of the propeller. The multiple suspenders comprise high-pressure air supply assemblies, multiple high-pressure air bags and multiple mounting plates with the longitudinal sections matched with the radian of the arc-shaped supporting face, the multiple mounting plates are mounted on the arc-shaped supporting face at e