Machine head grouting equipment for pipe jacking construction spiral unearthing

The machine head grouting equipment comprises a hollow screw rod, the tail end of the screw rod is connected with a cutterhead, an inclined protection plate is arranged in the middle of the periphery of the cutterhead, a plurality of sets of mud outlets are evenly formed in the periphery of the inner side of the protection plate, and the head end of the screw rod is connected with a grouting pump. The screw rod is connected with the grouting pump through a conversion connector, the two ends of the conversion connector can relatively rotate in the axial direction, and the static end of the conversion connector is connected with the grouting pump. The hollow screw rod serves as a slurry conveying channel, slurry is conveyed to the cutter head through the grouting pump, pressure slurry is generated on the periphery of the cutter head, the pressure slurry is conveyed along a gap between a pipe and a soil body, and therefore the lubricating effect on installation of a pipeline is achieved. Through the device, the