Classification by Roller: Roller construction includes smooth rollers, grooved rollers, and sheep's foot rollers. Smooth rollers are the most widely used, mainly for compacting road surface layers. They employ mechanical or hydraulic transmission, concentrating force to compact protruding parts, resulting in high compaction smoothness, suitable for asphalt pavement compaction.
Classification by Axle Arrangement: Based on axle arrangement, there are single-axle single-wheel, double-axle double-wheel, double-axle three-wheel, and three-axle three-wheel types. They are powered by internal combustion engines and employ mechanical or hydraulic transmission. Generally, they have front-wheel steering for good maneuverability and rear-wheel drive. To improve steering and compaction performance, articulated steering structures and all-wheel drive are recommended. The front wheel frame and chassis are articulated to reduce machine sway when the road surface is uneven. The rear wheels and chassis are rigidly connected. Hydraulic operation is used, with steering controlled by hydraulic cylinders. Both front and rear rollers are equipped with scrapers to remove adhering materials. A water spray system is also installed to spray water on the rollers during asphalt pavement compaction to prevent asphalt mixture adhesion. To increase the force, iron, sand, water, etc. can be added inside the grinding wheel to increase the weight.
