Improved moving frame grooving machine

The utility model provides an improved moving frame grooving machine. A drill rod is arranged on the middle lower portion of the grooving machine, the upper end of the drill rod is hinged to a support, a drill bit is arranged at the lower end of the drill rod, the middle portion of the drill rod penetrates through a steel sleeve A which is fixed in the middle of a supporting beam, and a stub axle A is fixed on the front side of the upper portion of the drill rod. A steel sleeve B is arranged on the periphery of the stub axle A, the steel sleeve B is hinged to the lower portion of a movable rod B through a push-and-pull arm D, a stub axle B is fixed on the rear side of the upper portion of the drill rod, a steel sleeve C is arranged on the periphery of the stub axle B, and the steel sleeve C is hinged to the lower portion of a movable rod A through a push-and-pull arm C.