SCQH3500 Hydraulic Crawler dynamic compactor is self-developed new product which based on market demand and widely research of dynamic compaction. The property and specification of the machine tell the PTO and high lifting speed make the machine nearly perfect. Design of the machine is simple but very practicable. Lifting equipment is single winch structure and use level-M7 in reduction gear for higher safety factor. The structure of light reel can match different diameters of steel wire with good arrangement. The machine can widely used in road, port, airport etc. The market prospect is bright.