1. Characteristics of XYD-200 crawler hydraulic core drilling rig ·drilling rig uses automatic Telescopic drilling rig ,it uses two high-strength cylinders to support.There is a group of hydraulic valves to control super nation of drill tower so that it saves time and effort, safe and reliable when user operates, the maximum for the user to create benefits. ·the chassis uses a rubber belt track so that the weight is light,the cost of life cycle is lower.It can reduce noise of the vehicle walking mechanism,reduce car bodyï¼?s shake,reduce the oil consumption.It can walk on the pavement of city and donï¼?t hurt the pavement. ·the chassis comes with four high-strength threaded legs(or Hydraulic high leg) the threaded legs install rate and adjust is fast and convenient, can be used for work plane leveling.It can make loading and unloading reduce the cost of to improve efficiency.It also can be used as auxiliary support when the track drilling rig is working. ·using 48V electric starting diesel engine is reduced the operateï¼?s labour intensity greatly.Especially in cold season,when diesel engine start hardly,it will show superiority vastly. ·the machine is equipped with BW-160 independent mud pump,the pump flow and pressure are big,the maintenance is convenient,the parts of the machine are convenient to buy all over the country. 2. Technical parameters of XYD-200 crawler hydraulic core drilling rig XYD-200 crawler hydraulic core drilling rig Drilling depth 200m Maximum opening diameter 75-300mm Final hole diameter 75mm Kelly 53/59*4200mm Drill pipe diameter 50/60mm Drilling angle 90°-75° Auxiliary power diesel engine 16.2kw 2200r/min Structural weight/Size 3000kg 3800*1950*2700 Spindle Spindle speed 64/128/287/557r/min Spindle stroke 450mm Windlass Single rope lifting force 24kn Single rope lifting speed 0.12/0.22/0.49/0.95m/s Drum diameter 140mm Wire rope diameter 13mm Wire rope capacity 35m Derrick Rated load 5t Effective height 6m Tower leg specification 89mm