GD-8 Whirl-jet Drill Rig is a kind of special device using in high-pressure-jetting and mud afflux. It can make the rod actualize immobility-, swing- or whirl-jet. Good in prevent the building subsidence or inclination and insulation water, plugging leak.

1. General Structure modality

      The drill using a hydraulic swivel head unit. The swivel head move up on main tower by traction of wire rope of working hoist, and its rotation is driven by hydraulic motor and reducer box, so it can rotate or swing in different angle. In a range, the rotate speed can be adjusted stepless to meet requests of various technology of construction.

      The drill uses a high-rack tower to increase efficiency of work, availability tenor of the tower up to 6 meters long. Hoist unit is posed of main and auxiliary hoist, they are driven by hydraulic motor through gears box. The main hoist mainly used to lift drill rods in working time, and the auxiliary used to load or unload rods. The main hoist can be adjusted its rotate speed stepless in a range that meet various requests of engineering. The drill uses a form of hydraulic driven-replacement of lengthways and transverse, it can move in two directions, in line or in perpendicular.