Self-adjusting quenching equipment and quenching method for engine crankshaft

The invention relates to the technical field of quenching, in particular to self-adjusting type quenching equipment and method for an engine crankshaft, and the self-adjusting type quenching equipment comprises a quenching box which is internally provided with a driving crankshaft; the cross-shaped guide assembly is arranged in the quenching box and connected with a journal on the driving crankshaft, and an annular heater used for heating the crankshaft to be quenched is arranged at the end, away from the driving crankshaft, of the cross-shaped guide assembly; the spray head is arranged in the quenching box, and the spray head can spray quenching liquid towards the crankshaft to be quenched; the abutting assembly is connected with the cross-shaped guide assembly and abuts against an overlapping area formed on the driving crankshaft, the abutting assembly can adjust the distance between the spray head and the crankshaft to be quenched according to the position state of the driving crankshaft, the constant dist