1.Applications of HZ-200YY hydraulic core drilling rig HZ-200YY hydraulic core drilling rig is mainly used for geological general investigation and exploration, road and tall building foundation exploration, holes in concrete structure, river levees, civil water wells and ground temperature central air-conditioner. 2. Features of HZ-200YY hydraulic core drilling rig ·the highest speed can reach 1045r/min with 5 gears, which improves drilling efficiency ·adopted 53*59 drilling rod, which has high rigidity and strong delivery torque. ·equipped with 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 core drilling rig is rigid enough for gravel layer and other complex geological conditions. 3. Technical parameters of HZ-200YY hydraulic core drilling rig Max open hole diameter 300mm End hole diameter 75mm Drill rod diameter 60mm Drilling angle 90 Drill weight (without power) 975kg Triangle conveyer belt B950 * 4; B1700 * 3 Main drilling rig moving distance 300mm Power Diesel engine 22HP Electric motor 15kw Spindle Spindle speed 64/128/287/557r/min Spindle stroke 450mm Hoist Max. lifting capacity 2400kg Single line lifting speed 0.41/0.82/1.64 m/s Wire rope diameter 13mm Wire rope length 35m Reel diameter 140mm Hug floodgate diameter 260mm Hug floodgate belt width 70mm Mud pump Type Horizontal single-urn twin-action Displacement Diesel engine 170L/min Electric motor 150L/min Maximum pressure 3mpa Work pressure 1.5mpa Inlet pipe diameter 40mm Outlet pipe diameter 30mm Triangle conveyer belt B1728mm