Quenching device for bolt

The utility model discloses a quenching device for bolts, which relates to the technical field of quenching for bolts and particularly comprises a positioning side plate, an angular limiting piece is fixedly mounted on one side of the upper surface of the positioning side plate through bolts, and two through grooves are formed in the upper surface of the angular limiting piece. Two through grooves in the surface of the angular limiting piece are formed by bolt holes and rotating shafts, an arc-shaped hook groove is formed in the edge of one side of the upper surface of the positioning side plate, a section of adjusting arm is movably clamped to the inner arc face of the arc-shaped hook groove through the rotating shafts, and a hinge shaft is movably connected to the surface of the side, away from the arc-shaped hook groove, of the section of adjusting arm; through the bolt chuck assembly, threaded rods on the two sides are rotated, so that contact lugs on the two sides are stressed and contract inwards, an op