1. Characteristics of XYD-3 crawler hydraulic core drilling rig
XYD-3 crawler hydraulic core drilling rig is mainly used for geological general investigation and exploration,road and tall building foundation exploration,kinds of hole in concrete structure,river levees,subgrade grouting hole drilling and direct grouting,civil wells and earth temperature central air-conditioner,ect. 
·The drilling rig is equipped with crawler chassis device, which is easy to move with fast speed.
·The crawler device is made of resistant steel mill.
·Hydraulic oil pressure feed device, which improves drilling efficiency.
·Pressure gauge displays the condition of the bottom of the drill hole.
·Drill mast controlled by hydraulic cyliner so it improves the efficiency.
·Diesel engine adopts the electric starter to reduce the labor usage.
2. Parameters of XYD-3 crawler hydraulic core drilling rig
Drilling depth 600m
Max. open hole caliber 300mm
End hole caliber 75mm
Drilling rod diameter 60mm
Drilling angle 90°-75°
Spindle 
Spindle forward speed 30-1050r/min
Spindle reverse speed 29-137r/min
Spindle stroke 600mm
Spindle inner diameter 96mm
Main Winch
Single line lifting speed 0.5/0.9/1.4/1.9m/s
Diameter of wire rope 12.5mm
Brake width 90mm
Drum diameter 300mm
The biggest single rope hoisting capacity 30kn
Mud pump
Type Horizontal triples BW-250 Mud Pump
Displacement 250 l/min
Water inlet diameter 75mm
Water outlet diameter 50mm
Power
Diesel engine 38kw
Electric motor Y180L4 22KW
Weight 6500kg
Size 2500*900*1800mm