Classification of small rollers
As a representative model of construction machinery and equipment, small road rollers are always busy in construction sites such as highways, bridges, and buildings. Because of its low price, small size, convenient maintenance, unique asvantages, small size, flexibility, multi-function and high efficiency, it is very popular with users. We will talk about types of road roller classified by work mode.
From the working mode, it can be divided into two types: static pressure roller and vibratory roller.
1 Static pressure roller
Static rollers can be divided into two types: tire rollers and drum rollers. The tire rollers include: self-propelled tire rollers and towed rollers. Drum rollers include: two-wheel and two-shaft rollers, and three-wheel and two-shaft rollers.
The static compaction roller is suitable for various compaction operations, so that the rolled layer is deformed and compacted. It is divided into steel wheel type and tire type. The roller structure includes smooth roller, groove roller and sheep foot roller. The application of smooth rolling is very common, mainly used for road surface layer compaction. Using mechanical or hydraulic transmission, it can concentrate the force to compact the protruding parts, and the compaction flatness is high, which is suitable for the compaction of asphalt pavement.
2 Vibratory roller
There are five types of vibratory rollers: walk-behind vibratory rollers, ride-on vibratory rollers, tire-driven vibratory rollers (bumps, smooth wheels), two-wheel tandem vibratory rollers (articulated integral type), and trailing vibratory rollers.
It is powered by internal combustion engine and adopts mechanical transmission or hydraulic transmission. Generally front-wheel steering, good maneuverability, rear-wheel drive. In order to change the steering and rolling performance, an articulated steering structure and all-wheel drive should be adopted. The front wheel frame and frame are hinged to reduce body sway on uneven road surfaces. The rear wheel and the frame are rigidly connected. Hydraulic control is adopted, and the steering is controlled by a hydraulic cylinder. The front and rear rollers are equipped with scrapers to clean the adhesive on the rollers. It is also equipped with a water spray system, which is used to spray water on the rollers to prevent the adhesion of the asphalt mixture when the asphalt pavement is compacted. In order to increase the force, iron, sand, water, etc. can be added to the roller to increase the pressure.
① Among them, the walk-behind road rollers include: single-wheel walk-behind vibratory road rollers, two-wheel walk-behind vibratory road rollers (also divided into heavy machinery, conventional machinery and full hydraulic pressure).
② Ride-on vibratory rollers include: small ride-on rollers (0.8 ton type, featuring large front wheels and small rear wheels), 1-ton ride-on vibratory rollers, 1.5-ton ride-on vibratory rollers, 2-ton ride-on vibratory rollers, 3-ton ride-on vibratory rollers, 3.5 t ride-on vibratory rollers Tons of vibratory rollers, etc. (single-wheel vibration and double-wheel vibration and full hydraulic pressure are involved here).
③Tire-driven vibratory rollers (bumps, smooth wheels) include: rear-wheel-drive vibratory rollers and all-wheel-drive vibratory rollers.
The tire-type road roller adopts hydraulic, hydraulic or mechanical transmission system, single-axis or all-axis drive, and three-point support of wide-base tire articulated frame structure. The compaction process has a kneading effect, so that the particles of the compacted layer are not damaged but embedded and evenly dense. It has good mobility and fast running speed, and is used for compaction of engineering cushions such as roads and airports.
④Two-wheel tandem vibratory rollers include: rear-wheel drive rear-wheel vibratory rollers, double-wheel drive rear-wheel vibratory rollers, and double-wheel drive double-wheel vibratory rollers.
⑤ Trailing vibratory rollers include: bump trailing vibratory rollers, smooth wheel trailing vibratory rollers.