It is a compaction equipment widely used in roads, railways, airport sites, dams and other projects. It is mainly used to compact materials such as soil, gravel and asphalt concrete to improve the bearing capacity and durability of roads and sites. The working principle is to reduce the gap between materials and increase the friction between particles through the compaction and vibration of heavy objects, thereby improving the compactness and strength of the material. Usually divided into static pressure and vibration of two ways of working, static pressure only by its own weight of compaction, and vibration is generated by the vibration system of high-frequency vibration, especially suitable for asphalt concrete and other materials compaction.