1. Features of HZ-200YY hydraulic drilling rig the highest speed can reach 1045r/min with 5 gears, which improves drilling efficiency adopted 53x59 drilling rod, which has high rigidity and strong delivery torque. equipped with national patent technology-taper clutch, made the machine easy to operate and free of maintenance. using large module planetary gear and adding supporting frame, which highly increased hoisting and braking ability of the winch. vertical spindle are fixed by four groups of bearings to ensure that the rotary machine is rigid enough for gravel layer and other complex geological conditions.