Optimally designed double swing arm luffing mechanism and optimized hinge point position take account of the construction stability and the transportation convenience at the same time; It adopts H-type hydraulic retractable crawler chassis dedicated for rotary drilling rigs and large-diameter slewing bearing to ensure superior stability and convenient transportation; It adopts imported Volvo engine with strong power,which effectively reduces fuel consumption and use cost; The hydraulic system adopts load sensing technology with total power control and limit power control,making the hydraulic system more efficient and energy-saving,independent radiator system provides high heat dissipation efficiency; The proprietary single-row rope main winch of XCMG effectively solves the twine problem and greatly prolongs the service life of wire rope; The rotary drive owns normal mode special for soil layers and rock-entering mode special for rock formations,which improves construction efficiency,the autorotation of rotary drive can achieve continuous adjustments of speed in normal mode and rock-entering mode; Standard centralized lubrication system makes the maintenance more convenient and improves working reliability.