Grouting device for road and bridge construction

The invention relates to a grouting device for road and bridge construction. The grouting device effectively solves the problem that thin mortar on the upper layer cannot be cleaned in time during grouting. According to the technical scheme, the grouting device comprises a grouting head, a floating mechanism capable of floating is rotationally arranged on the outer surface of the grouting head, the floating mechanism comprises a floating ball, a flowing mechanism and a pneumatic mechanism, the floating ball is rotationally arranged on the outer surface of the grouting head, and the flowing mechanism comprises a flowing frame, a hose and a small pipe. According to the scheme, by means of the air conveying channel, liquid guided by the floating ball can reach the control channel, the liquid in the control channel can be conveyed to the outside, the pneumatic bag in the floating ball can be controlled, and the pneumatic bag can control the flowing frame; in the whole process, the gas conveying channel conveys ga