Provided is an ellipsoidal groover. A water outlet
pipe is arranged on the upper portion of the groover, a
mud pump is arranged at the lower end of the water outlet
pipe, a water suction
pipe is arranged at the lower end of the
mud pump, and an upper arm A and an upper arm B are respectively fixed on the left side and the right side on the upper portion of the water suction pipe. The left end of the upper arm A is hinged to the upper end of a
crank arm A, the lower end of the
crank arm A is hinged to the left end of an arm lever A, the right end of the upper arm B is hinged to the upper end of a
crank arm B, and the lower end of the crank arm B is hinged to the right end of an arm lever B. A middle arm A and a middle arm B are respectively fixed on the left side and the right side on the middle portion of the water suction pipe, a hydraulic driving
machine A is arranged at the left end of the middle arm A, an
ellipsoid A is fixed outside the hydraulic driving
machine A, a hydraulic driving
machine B is arranged at the right end of the middle arm B, and an
ellipsoid B is fixed outside the hydraulic driving machine B. A lower arm A and a lower arm B are fixed on the lower portion of the water suction pipe, the left end of the lower arm A is hinged to the upper end of a rocker A, the lower end of the rocker A is hinged to the right end of the arm lever A, the right end of the lower arm B is hinged to the upper end of a rocker B, and the lower end of the rocker B is hinged to the left end of the arm lever B. A rectangular frame A is arranged outside the
ellipsoid A, and a rectangular frame B is arranged outside the ellipsoid B.