Road rollers - separate view special equipment, which is actively used during the construction or repair of roads. Designed for compaction of certain layers of the road surface. Are used road rollers and for sealing the base under paving slabs or concrete screed. Modern road rollers have the most varied form and operating principle. All of them can be classified according to certain criteria.
Classification by type of movement
According to the principle of movement can be divided into two types:
- Trailed - move using another self-propelled mechanism. Most often, a trailed roller is a metal frame with one or two rollers. In most cases, they move with the help of tractors.
- Self-propelled - are full-fledged machines. These rollers are moved by own engine, have increased maneuverability compared to trailed.
Due to the fact that self-propelled road rollers are more convenient to operate, trailed rollers are practically no longer produced and you can meet them less and less.
By size and weight, rollers can be divided into the following types:
- Lightweight - the weight of which does not exceed 6 tons. Such rollers are capable of distributing a load of no more than 40 kN / m. They are equipped with motors up to 20 kW. Similar rollers are used for sidewalks and platforms that will not be subject to heavy loads. In addition, it can be used for preliminary compaction of any road objects.
- Medium - which are equipped with engines with a power of 20 to 30 kW. The weight is in the range of 6 to 10 tons. Distributed load - from 40 to 60 kN / m. Used to compact most types of roads.
- Heavy - heavy duty, the weight of which exceeds 10 tons. Equipped with engines that have a power of more than 30 kW. Heavy rollers are capable of distributing loads over 60 kN/m. With the help of them, layers of crushed stone or gravel are compacted, and asphalt or asphalt concrete pavement is also compacted.
Classification by type of working body
Rollers are the working body of all road rollers.
All these rollers can be divided into the following types:
- Smooth - metal cylinders which have a smooth surface. Rollers with smooth rollers are used to compact the asphalt and asphalt concrete layer.
- Cam - cylindrical rollers, which, unlike smooth ones, have certain protrusions. These protrusions are called cams. From this came the name of the rollers themselves. Padfoot rollers are often referred to as soil rollers. Used for soil compaction.
- Lattice - specific rollers, which have a kind of metal lattice over a smooth surface. Rollers with such rollers are also designed for rolling various types of soil.
- Pneumatic - rollers, which consist of several pneumatic wheels. Such rollers are used for compaction of asphalt and asphalt concrete road surface.
- Segmented - ordinary smooth rollers, which have special segments on the rim.
- Compactor - rollers, which in appearance are very similar to cam rollers. Compactor rollers have a smaller width. The number of cams on compactor rollers is much less than on cam rollers.
- Special - rollers that are combined view several rollers. Such rollers are made exclusively to order to perform certain jobs using new or experimental technology.
According to the number of rollers, rollers can be divided into:
- Single-drum - equipped with only a drum on one side only. The other side of the rink is supported by wheels.
- Two-roller - have two rollers at once, front and rear. Both rollers can be leading, or only one roller can be leading.
- Three-rollers - have three rollers at once.
Classification by compaction method
According to the type of seal, can be divided into two types:
- Static - carry out compaction due to own weight. The more weight, the better they can compact a certain layer of the roadway.
- Vibratory rollers are the most modern road rollers that compact not only due to their weight, but also due to small vertical vibrational movements of the rollers. They are able to compact any material better with fewer penetrations. Used in road construction high class. You can not do without vibratory rollers and during the construction of airfields, ports and other facilities with increased load.
Which rink to choose?
As you can see, the variety of road rollers is so great that not every road builder will be able to choose the right roller for certain purposes. Our company has all the main types of road rollers available for rent. If you are unsure about your choice, please call us. Our highly qualified specialists will select the one who can perform all the tasks.
It is not always necessary to rent the largest and most powerful ice rink. In most cases, in order to build small road or asphalt the local area, a light or medium skating rink will suffice. Call us and we will not only select the optimal road roller for your purposes, but also provide the rented equipment with highly qualified drivers. In addition, we always have other construction and road machinery which in a complex is capable to carry out all assigned works in the shortest possible time.
The most common machines for compacting materials used in road construction are road rollers.
The undoubted leader in the production of sealing equipment is the German company Hamm. The Hamm road roller is characterized by high performance, power and ease of maintenance.
The company BOMAG does not lag behind them. The BOMAG road roller, depending on the model, is used for the construction of footpaths and motorways.
From domestic cars we can note the road roller DU 85. It is used for the construction of airfields, dams, port facilities and industrial facilities. Has high performance.
Classification: main types
Rollers are classified according to the method of movement, pressure and design of the rollers. There may be several or one roller at the rink. The processed material is compacted in layers under the action of only the weight of the roller or with the help of additional vibrations.
For different materials apply various forms roller.
Types of rollers:
- smooth (cylindrical drum with a smooth surface).
- cam (cylinder, on the surface of which there are protrusions - cams.);
- lattice (the surface of the roller has the form of a lattice made of profiled steel rods or sheet steel segments);
- type-setting (wheels with pneumatic tires assembled on the axle). Are used for consolidation of bituminous and asphalt concrete mixes;
- segmented (smooth drums with segments on the rim);
- compactor (cylinder, on the surface of which cams of a symmetrical shape are welded). They differ from cam rollers in a smaller width and a smaller number of rows with cams;
- special (polygonal discs, combined, etc.).
By the strength of the impact on the material are divided into:
- light: distributed load no more than 40 kN / m, engine power up to 20 kW, weight 5 tons. Used for preliminary compaction of coatings and bases;
- medium: load 40-60 kN / m, engine power 25-30 kW, weight 6-10 tons. Used for both intermediate and final compaction of lightweight coatings;
- heavy: load over 60 kN/m, engine power over 30 kW, weight over 10 tons. They are used for the final compaction of gravel or crushed stone bases, as well as asphalt concrete pavement.
By the number of rollers there are:
- single drum with supporting wheels or rollers;
- two-roller, having one or two driving rollers;
- three-roller (two-axle, equipped with an additional roller of small diameter or without it, as well as three-axle with one or three driving rollers).
According to the method of movement are:
- trailed;
- self-propelled.
The trailed road roller is a metal frame on which a cylindrical roller is fixed. The unit clings to the tractor, which pulls it along the compacted surface.
A self-propelled road roller is a machine that does not require additional traction power. Rollers of this type are maneuverable, have a higher productivity than trailed ones. Some of them are capable of speeds up to 14 km / h.
According to the method of impact on the soil, the models are divided into:
- static;
- vibrating.
Static rollers compact the material by gravity.
The vibratory road roller compacts the road base of the road when continuous action vibratory roller. It oscillates, due to which the material is compacted with fewer penetrations.
The domestic self-propelled road roller DU 54 belongs to the vibration ones.
Reliability, durability and strength of roads to a large extent depend on the quality construction of the road surface. To facilitate this process, special equipment is used.
To compact, level, compact soil or gravel, asphalt or concrete in foundations, as well as road structures, a road roller is used. Scope of special construction equipment quite extensive - this is industrial, hydraulic, road, urban, railway, airfield construction.
Road roller
The principle of operation and the method of movement are different for different equipment. There is a trailer and self-propelled machinery, static and vibration. The road roller is equipped with specific working bodies.
These can be rigid steel rollers or rollers, in turn, are divided into smooth, lattice or with special cams on the surface.
The road roller compacts road building materials by rolling its working bodies. The machine, moving along the surface of the road, carries out the process of compacting the road surface with its own weight. The asphalt road roller is indispensable for construction work at stadiums, for compacting sand and pebbles on roads, for laying asphalt and in small-sized construction.
To perform some, a vibratory road roller is used, which is capable of periodically vibrating the working bodies. This machine is equipped hydrostatic transmission, hydraulic control is carried out using an electrical system.
For full-fledged work vibrational functions, the mechanism of the so-called crab move is involved.
Road rollers endowed excellent performance they are reliable in operation. It should be noted that the own weight of the unit has a certain value when exposed to the compacted material. In a number of special construction equipment, there are combined road rollers with compacting bodies, which are typical for devices of various types.
Among the roller road rollers, which are hinged shoes on the rim of the roller, there are lamellar, cam, ribbed and lattice types.
For lattice roller road rollers, working surface the rim of the drum is in the form of a lattice, and in the cam rollers, several rows of cams are rigidly fixed on the rim of the drum.
Asphalt laying, road construction works performed mainly on the latest foreign equipment. This is due to the high technical specifications of this road specialized equipment, its convenience and maximum ease of operation, pleasant appearance, with the corresponding equipment. This technique confirms high performance and maximum efficiency when working on asphalt. road surfaces, when compacted along the walls.
TO Category:
Asphalt paving machines
Purpose and classification of rollers
The rollers are designed for compaction of bases and coatings made of asphalt concrete mixtures, as well as for layer-by-layer compaction of soils, gravel-crushed stone and stabilized materials during the construction of dams, dams, airfields and roads.
The working bodies of these machines are metal rollers or pneumatic wheels.
The working bodies of the rollers are divided into leading and driven. Torque from the engine is transmitted to the leading working bodies internal combustion. The driven working bodies of self-propelled rollers are guides and serve to turn the machine.
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Rollers are classified according to the principle of operation, the type of working body, the method of movement, the number of axles and the number of rollers (GOST 21994-76).
According to the principle of operation, rollers are divided into static and vibration.
On static rollers, the coating is compacted due to the action of gravity when the working body is rolled over the material. On vibratory rollers, in addition to static loading, a dynamic load is transferred to the compacted material due to the oscillatory movements of one roller. To create vibration, an unbalance vibration exciter is built into one of the rollers, driven by the roller transmission.
According to the type of working body, rollers with smooth rollers and pneumatic wheels are distinguished.
According to the method of movement, rollers are divided into semi-trailer and self-propelled. In a semi-trailed roller, part of its mass is transferred to the tractor through the hitch. With semi-trailed rollers, pneumatic wheeled tractors or tractors are used.
According to the number of axles, rollers are divided into single-axle, two-axle and three-axle.
According to the number of rollers, single-roller, two-roller and three-roller rollers are distinguished.
The main parameter of the rollers is the mass. By weight and design, self-propelled road rollers with smooth rollers are manufactured in the following types and designs:
type 1 - light vibration weighing 0.6; 1.5 and 4 t single-axle single-drum (1/1) and two-axle double-drum (2/2);
type 2 - medium vibration and static weighing 6 tons, two-axle two-roller (2/2) and two-axle three-roller (2/3);
type 3 - heavy static weighing 10 and 15 tons, two-axle two-roller (2/2); two-axle three-roller (2/3) and three-axle three-roller (3/3).
Pneumatic semi-trailed rollers are divided into the following types (GOST 16481-70): light (15 tons), medium (30 tons) and heavy (45 tons).
Pneumatic self-propelled rollers are divided into medium (16 tons) and heavy (30 tons).
The construction of any road requires the formation of a base of solid material and an even layer of the roadway.
The base material, its soil layer, must be compacted as much as possible and covered with a working layer of solid material of a finer fraction (gravel road) or concrete, asphalt, asphalt-concrete mixture (motorway).
The work of leveling, compacting and compacting the layers is carried out using construction machine defined as a road roller. The executive body of the unit is pneumatic wheels or rollers made of metal.
On the drive rollers (wheels) is transmitted torque from power plant, which ensures the movement of the machine. Changing the direction of movement provides control of the driven roller (wheels).
What are road rollers?
Machines share:
- According to the principle of action on static and vibration. Static rollers compact layers of material by their own gravity when the executive body moves along the working layer. Vibratory rollers add a dynamic load from vibrations of one of the rollers to the impact on the material.
- According to the applied method of movement, semi-trailer and self-propelled. In semi-trailers, part of the weight load is distributed to hitch wheeled tractor. Self-propelled vehicles propelled by their own internal combustion engine.
- By the number of axles, one, two and three-axle rollers are distinguished.
- The number of rollers determines one, two and three roller units.
According to the size of their own weight and design features, self-propelled rollers are divided into types:
- Vibratory and static machines:
- type 1 includes light weights from 0.6 to 4.0 tons with one axle and one roller, with two axles and two rollers;
- type 2 includes medium machines with a weight of more than 6 tons, with two axles and rollers, with two axles and three rollers;
- to type 3 heavy machines weighing from 10 to 15 tons on two axles with two rollers, on two axles three-roller, on three axles with three rollers.
- Rollers of semi-trailer type on pneumatic wheels are distinguished by weight:
- up to 15 tons - light vehicles;
- up to 30 tons - medium;
- up to 45 tons - heavy machines.
- rollers self-propelled type on the airway share:
- up to 16 tons - medium aggregates;
- up to 30 tons - heavy units.
How is the rink set up?
Consider several options for roller devices.
Static machines
The most widely used in road construction are static self-propelled units in a two-axle and two-roll design. The machine compacts and compacts the layers evenly building material along the entire working strip with rollers of the same width.
1 - controlled roller; 2 - headlight illumination; 3 - steering fork; 4 — roller cleaning scraper; 5 - steering; 6 - controls; 7 - operator's place; 8 - leading roller; 9, 10, 11 - frame and transmission units
The frame is made of profiled and sheet steel and is the basis for the installation of all components and mechanisms of the rink. A steel head is welded into the front of the frame device to secure the axle of the guide roller.
The rollers are made by casting or welded from several parts. The internal cavities of the welded rollers are filled with ballast (water, sand). On asphalt roller rollers are installed with a smooth, without scuffing and dents working surface.
In addition, scrapers are used to clean it and devices that ensure the wetting of the drum with special oil mixtures.
The torque force of the power plant is transmitted to the rear drive roller by a transmission of a mechanical, hydromechanical and hydrostatic type.
In two-axle three-roller rollers on rear axle two rollers are installed, the total width of which overlaps the working strip of the front roller and allows you to increase the processing width on both sides. This arrangement allows you to work near walls and curbs.
In the final finishing of the upper asphalt layers, three-axle three-roll machines are effectively used. The design feature of such units consists in the installation of three rollers of the same width, two of which are driven guides.
The driving roller is larger in diameter than the driven rollers. Aggregate Suspension Redistributes weight load along the axes in accordance with the profile of the surface to be sealed - all irregularities and protrusions are processed high blood pressure and align.
Vibrating machines
Rollers of light and medium type are made with vibrating rollers. Such machines are used in road repair work, as well as when laying sidewalks, footpaths, leveling and asphalting construction sites of limited area.
Their main advantage is high maneuverability and ease of transportation. If necessary, the vibration of the roller can be turned off.
1 — carrier frame; 2 - controlled roller; 3 - vibrating roller; 4 - controls; 5 - scraper cleaning and wetting unit; 6 - enclosing trend.
Sealing vibrations in most of these devices are created by an unbalanced vibration exciter - a shaft with a load rotating in the bearing devices of the drum hubs and creating a variable force F.
1 - unbalance weight; 2 - drive shaft; 3 - drum hub; 4 - key fastening
Road rollers
The roller is the working body of the rink. Installed on machines:
- smooth rollers for asphalt paving;
- cam - with small protrusions over the entire surface, they work effectively on loose soil;
- lattice - the surface is covered with protrusions in the form of a lattice, crushing large fragments, increasing compaction;
- pneumatic wheel drum - compaction is carried out by a set of wheels installed in a certain order.
In agricultural pre-sowing and planting work, trailed multi-section rollers of the ZKKSH 6, KShKU - 9 type, which have a ringed spur executive body, are used for soil compaction and compaction.
Modern road cars
The German company BOMAG GmbH in the construction equipment market offers productive road rollers for all stages of laying highways.
- Articulated tandem rollers for asphalt work:
- light, with a dead weight of 1.8 tons to 5 tons;
- heavy from 6.5 to 16 tons.
- Static and vibratory type rollers for soil compaction work with a weight of 3 to 26 tons.
Roller Bomag - soil compactor
Skating rink Bomag - technical specifications asphalt compaction products
| Model designation | Working band width (mm) | Power plant power (kW) | Weight of the machine ready to work (kg) |
| BW 80 AD-5 | 800 | 15,0 | 1550-1800 |
| BW 90 AD-5 | 900 | 15,0 | 1600-2000 |
| BW 100 ADM-5 | 1000 | 15,0 | 1650-2000 |
| BW 90 SC-5 | 900 | -/- | -/- |
| BW 100 SC-5 | 1060 | -/- | 1700-2000 |
| BW 100 ACM-5 | 1000 | 15,1 | -/- |
| BW 141 AD-5 | 1500 | 55,4 | 6900-8700 |
| BW 154 AD-5 | 1680 | -/- | 8300-9900 |
| BW 191 ADO-5 | 2000 | 105,0 | 13100-14300 |
| BW 206 ADO-5 | 2135 | -/- | 13650-15700 |
| BW 27 RH-4i pneumatic wheel | 2040 | 95,0 | 8800-27000 |
The RASKAT plant from Rybinsk in 1971 mastered the production of a two-axle two-roll vibratory roller for universal use DU 47.
