Workpiece chain wheel heating device

The invention provides a workpiece chain wheel heating device. The workpiece chain wheel heating device comprises worktables, a first transverse plate and a second transverse plate, wherein two ends of the first transverse plate are overlapped on the worktables at the two sides; two ends of the second transverse plate are connected with travelling trolleys; the worktables are provided with travelling rails for the travelling trolleys to travel; the second transverse plate is provided with a clamping groove capable of clamping a workpiece; the first transverse plate is provided with a liner bushing and a high-frequency coil; the liner bushing is located in the high-frequency coil and corresponds to a chain wheel on the workpiece; the liner bushing comprises a liner bushing body and a coppersleeve which is connected onto the liner bushing body; the copper sleeve corresponds to the workpiece. When the workpiece chain wheel heating device works, the travelling trolleys drive the workpiececlamped on the clamping g