Road roller, also known as compactor, is a kind of road repair equipment. Road roller, which belongs to the category of road equipment in engineering machinery, is widely used for filling and compaction of large grade highway, railway, airport runway, dam, stadium and other large project. It can crush sand, semi sticky and sticky soil, subgrade stabilized soil and asphalt concrete pavement. The roller is suitable for all kinds of compacting operations by the gravity action of the machine itself, so that the rolled layer is permanently deformed and densely packed. The roller is also divided into two types of steel wheel and tire type.