Classification of road rollers.

The roller structure includes light roller, trough roller and sheep foot roller, etc. Light grinding is the most common application, mainly used for road surface compaction. Using mechanical or hydraulic transmission, can concentrate the force to compact the protruding part, high compacting flatness, suitable for asphalt pavement compaction operations.

According to the axle arrangement, there are single axle single wheel, double axle double wheel, double axle three wheel and three axle three wheel. Using internal combustion engine as power, mechanical transmission or hydraulic transmission. General front-wheel steering, good maneuverability, rear-wheel drive. In order to improve the steering and rolling performance, it is advisable to adopt articulated steering structure and all-wheel drive.

The front wheel frame and frame are hinged to reduce the road surface's irregular fuselage swing. The rear wheel and the frame are rigidly connected. Using hydraulic control, hydraulic cylinder control steering. Both front and rear rollers are equipped with scraping plates to remove adhesive from the rollers. It is also equipped with a water spray system for the compaction of asphalt pavement, which sprinkles water on the roller to prevent the asphalt mixture from sticking. In order to increase the force, iron, sand and water can also be installed in the roller to increase the weight.

The main technical parameters of steel wheel roller are machine weight and line pressure. In the 1980s, the weight range of various steel wheel rollers is about: two-wheel rollers 2~13 tons, three-wheel rollers 1~15 tons, according to the need for pressure weight 1~3 tons, three-axis three-wheel rollers 13~14 tons, after the pressure weight is 18~19 tons.

The roller adopts pneumatic tires, which are generally installed 3 to 5 front wheels and 4 to 6 rear wheels. If the inflation pressure is changed, the ground pressure can be changed, and the pressure adjustment range is 0.11~1.05 mpa. Wheel roller adopts hydraulic, hydraulic or mechanical transmission system, single shaft or full shaft drive, wide base tire articulated frame structure three-point support. The compaction process has the effect of kneading, so that the particles of the compaction layer are not destroyed and embedded, and are uniformly dense. Good mobility, fast travel speed (up to 25 km/h), used for road, airport and other engineering cushion compaction.

The towed vibratory roller can effectively compact all kinds of soil and rock fill, and is suitable for the construction of modern highways, airports, embankment fill, seaports, DAMS, railways, mines and other projects.