Medium-frequency heat treatment improved structure of driving gear ring of caterpillar excavator

The utility model discloses a medium-frequency heat treatment improved structure of a driving gear ring of a caterpillar excavator. The medium-frequency heat treatment improved structure mainly comprises a gear ring fixing seat, an inductive head part and a cooler part, wherein the inductive head part is provided with an effective ring adopting a medium-frequency heat treatment mode; the effective ring is arranged above the gear ring fixing seat; the cooler part is provided with an annular cooling pipe; the annular cooling pipe is arranged above the effective ring; a plurality of water spray thin holes are densely distributed in the inner side wall of the annular cooling pipe. The scheme adopts a medium-frequency heat treatment mode, surface modification is obvious, and the medium-frequency heat treatment improved structure is extremely suitable for the whole quenching heat treatment processing effect of the surface layer of the driving gear ring. Compared with the prior art, the whole hardness and the wear r