YTR430C crawler rotary drilling rig adopts CAT chassis, which improves the reliability of the chassis. Large triangle amplitude mechanism is adopted to make the rig construction more stable. Rear main hoisting, long wire rope life; The configuration of enhanced 580 drill pipe has high reliability; The power head has two modes: large torque mode and adaptive mode. The rotary drilling machine has high efficiency, strong adaptability, good stability and strong shock resistance. It is very suitable for drilling into rock and construction of large pile and deep pile.