1.The features of XYD-130 crawler hydraulic core drilling rig The drilling rig adopts the automatic Telescopic style with two high strength oil cylinder support, a set of hydraulic valve control rigs operating supine, which is time-saving, safe and reliable to maximize the benefits for users. The chassis adopts rubber track, light weight and low life cycle cost, which can reduce noise of vehicle running mechanism, reduce car body vibration, and reduce fuel consumption greatly. It can walk on urban roads without hurting the road surface. The chassis is equipped with four high strength threaded legs (or hydraulic high leg). The installation and adjustment is fast and convenient. It can be used for leveling of work plane, loading and unloading vehicle, which reduces the hoisting cost and improves efficiency and works as auxiliary support. The drilling rig uses 48V electricty to start the diesel engine , which greatly reduces the labor usage, especially in the cold season. When the diesel engine has difficulty activiting, this starting mode shows greater advantages. 2.Technical parameters of XYD-130 crawler hydraulic core drilling rig XYD-130 crawler hydraulic core drilling rig Drilling depth 130m Maximum opening diameter 220mm Diameter of the end hole 75mm Drilling rod caliber 50mm Drilling angle 90°-75° Drill weight (no include power) 2600kg Spindle  Spindle speed 142/285/570 r/min Spindle stroke 450mm Windlass Max single line hoisting capacity 1600kg Single line lifting speed 0.41/0.82/1.64 m/s Drum diameter 140mm Wire rope diameter 13mm Wire rope capacity 27m Mud pump Type horizontal single urn twin-action Displacement 95 /77L/min Maximum pressure 1.2mpa Work pressure 0.7mpa Water inlet caliber 30mm Water to exit caliber 20mm Triangle conveyer belt B1575mm