Control device for adjusting water pressure of water supply hose

The invention relates to a control device for adjusting the water pressure of a water supply hose. The control device comprises a rack (9), a left lower-semicircle gear (8) and a right lower-semicircle gear (7), wherein the left lower-semicircle gear (8) and the right lower-semicircle gear (7) are symmetrically hinged to the left side and the right side of the rack (9); axes of hinge shafts of the left lower-semicircle gear (8) and the right lower-semicircle gear (7) are located at same horizontal height; an upwards-extending driving rod part (81) is fixedly arranged on the left lower-semicircle gear (8), wherein the center axis of the driving rod part (81) is located in the direction of a connecting line of the arc midpoint of the left lower-semicircle gear (8) and the axis of the hinge shaft of the left lower-semicircle gear (8); and the driving rod part (81) is hinged to the upper end of a transmission connecting rod (78) at the position of the center axis of the driving rod part (81).