Self-unfolding and limiting hinge device

The invention discloses a hinge device capable of self-unfolding and limiting. The hinge device comprises a lock catch device, a limiting device, a double-torsion-spring hinge assembly, a first plate, a second plate, a control circuit and a power source. The locking device and the limiting device are connected with the controller and are uniformly powered by the power supply; the second plate is connected with the first plate through the double-torsion-spring hinge assembly to form a hinge device. The second plate which is in a folded state and is fixed on the first plate can control one-key unlocking and releasing through a switch, is automatically unfolded under the action of the double-torsion-spring hinge assembly, and is automatically fixed in a state that any included angle is formed between the first plate and the second plate under the action of the limiting device. The structure in a folded state can be automatically unfolded, and the structure can be automatically limited and fixed after being unfol