Well type annealing furnace for locking bolt production

The invention discloses a pit type annealing furnace for producing locking bolts, which comprises a furnace bottom and a furnace body arranged at the upper end of the furnace bottom, the furnace body comprises a first half furnace and a second half furnace which are arranged in a left-right half manner, and the first half furnace and the second half furnace are combined to form a furnace chamber; the lower portions of the sides, away from the center of the furnace body, of the first half furnace and the second half furnace are hinged to the ground through hinge pieces, the sides, away from the center of the furnace body, of the first half furnace and the second half furnace are further provided with overturning driving cylinders used for driving the first half furnace and the second half furnace to overturn around the hinge pieces respectively, and the overturning driving cylinders are obliquely arranged. One end of the overturning driving cylinder is hinged to the side wall of the furnace body, and the other