1. Characteristics of XY-8 hydraulic core drilling rig ·Machine adopts pneumatic shift Fastgear 8JS118 auto transmission and clutch, compact structure, smooth operation, stable performance, good wild card. ·Using auto-control flexible-shaft shift agency, we achieve the long-distance transmission shift. The pneumatic shift is light and agile, and has the advantage of hommization. ·Reasonable speed range and many speed radixes (8 forward speed, 1 reverse speed), with low-speed it has big torque (Max. up to 8000N.m). ·Using concentrated forced lubrication system, as long as the rig runs, the separate lubrication oil pump starts working and sends lubrication oil to each node that requires lubrication. When the oil lubricates drive mechanism, it will also take away the heat inside, (lubrication system with separate condenser), to prevent the components from heat caused by high-speed high-load state. ·The rig adopts vertical shaft instead of the traditional hexagonal vertical shaft, exponentially increasing gyrator transmission efficiency and carrying capacity . And new spindle shaft has big hole diameter (96 mm), with twin cylinder hydraulic feed the trip is much longer (up to 1000mm), especially suitable for large diameter drill pipe wireline coring, help to improve drilling efficiency and reduce the hole accident. ·Light weight and can be disassembled to many parts, net weight 6500Kg. ·The chuck is hydraulic-release normally closed hydraulic chuck, new structure, good compensatory. Carbide inset&welded slip structure, has large clamping force, long life, reliable operation. ·With water brake, in deep hole drilling, its safer and more smooth to put down the drill pipe. ·hydraulic oil is supplied by gear oil pump, less power consumption, and the hydraulic system oil temperature is low and stable work. The system is equipped with a hand pump. When power machine can not work, workers can still use hand pump to lift tools from the bottom of the hole, in order to avoid burying accidents 2. Parameters of XY-8 hydraulic core drilling rig Drilling angel 0-360° Electric motor Y280S-4 /75KW Diesel engine YC6A240-33/ 177KW Spindle 96mm Forward speed 74/106/150/208/300/431 Reserve speed 110rpm Forward speed 110/157/222/309/445/640/905/1256 Reserve speed 74rpm Max.torque of spindle 8000nm Spindle stroke 800mm Max.lifting force of spindle 180kn Max.thrust of spindle 110kn Type Planetary gear drive, hand brake Wire rope caliber 21.5mm(6X19) Drum capacity for rope 120m Max.lifting force(single rope) 60kn