The hydraulic system with fast response and good control performance,the main pump power is adjusted according to the working conditions,the auxiliary system adopts load sensitive control technology,and the comprehensive construction efficiency of the system is increased by 20%; The special H-form hydraulic telescopic crawler chassis for rotary drilling rig is adopted,equipped with large diameter slewing bearing and chassis dismounting landing legs to ensure the working stability and transportation convenience; Cummins 15L electronic control turbocharged engine is adopted,with strong power,low fuel consumption and convenient service,it also adopts intercooling and water dispersing independent fan with low noise; The power head adopts the vertical pin connected power box and bracket,making it reliable and convenient to assemble and disassemble;it is equipped with a casing driver to improve the casing running ability of the drilling rig;the power box is equipped with a circulating filtering system to keep the cleanliness of the gear oil in the box and the full lubrication of the bearing; The upper main winch adopts pin shaft connection,with high connection strength and convenient disassembly;the main winch support of box structure is safe and reliable;the main winch force can reach 520 kN,meeting the working condition of M6; The intelligent control system realizes the functions of automatic adjustment and display of drilling mast verticality,automatic spin-off (adjustable frequency), cruise control,stepless pressure adjustment,bottom touch protection,etc,it adopts bus panel design to prevent misoperation,it is equipped with 12 inch touch screen display and electric control handle to achieve better control performance.