Self-adjustable retracting and releasing device for anchor cable

The invention relates to a self-adjustable retracting and releasing device for an anchor cable, which belongs to the technical field of ocean monitoring. The self-adjustable retracting and releasing device comprises a volute spiral spring assembly, a lever mechanism, a pressing mechanism, a clutch mechanism, a winch assembly and a support seat. The self-adjustable retracting and releasing device can achieve the functions of automatically retracting and releasing a moored water floating object anchor chain within a certain length range by using the characteristic that the plane volute spiral spring assembly can store and release certain torque energy; when the water resistance borne by the floating objects changes because floating objects floating in the water are influenced from the outside environment and the tension borne by the moored anchor chain correspondingly changes; when the tension borne by the moored anchor chain is greater than a fixed value, the self-adjustable retracting and releasing device sta