1.The applications of HZ-200YY drilling rig HZ-200YY drilling rig is mainly used for water well,field irrigation well,engineering water well,precipitation well and so on;geological general investigation and exploration,road and tall building foundation exploration, holes in concrete structure,river levees. 2.The features of HZ-200YY drilling rig ¬The highest speed can reach 1045r/min with 5 gears, improved drill efficiency ¬Adopted 53 x 59 drilling rod, high rigidity and strong delivery torque ¬Equipped with national patent technology---taper clutch, make the machine easy to operate and free maintenance. ¬Use large module planetary gear and add supporting frame, 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. 3.The specifications of HZ-200YY drilling rig Maximum open hole diameter 300mm End hole diameter 75mm Drilling pipe diameter 50mm Drilling angle 90° Drilling rig weight (without power) 975kg triangular belt B950 x 4; B1700 x 3 Active move distance 300mm Power diesel engine 20hp electric motor 15kw Spindle Spindle rotating speed 64/128/287/557r/min Spindle stroke 450mm Windlass Maximum lifting power of a single rope 2400kg Lifting speed of a single rope 0.41/0.82/1.64m/s Wire rope diameter 13mm Drum capability 35m Band-type break diameter 260mm Band-type break belt width 70mm Mud pump Model horizontal single-urn twin-action Displacement diesel engine 170l/min electric motor 150l/min Maximum pressure 3mpa Work pressure 1.5mpa