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What is a double drum roller?
Release time:
2023-01-31
Source:
Double drum road roller, also known as bulldozer, is the equipment for road construction. Double drum roller in the construction machinery belongs to the category of road equipment, more widely used in high-grade highways, railroads, airports, runways, dams, stadiums and other large-scale engineering projects such as fill compaction operations, can be rolled sandy, patchy and cohesive soils, roadbed stabilized soils and asphalt concrete pavement layer. The roller is suitable for all kinds of compaction work due to the gravity of the machine itself, rolling layer deformation, tight. The roller is further divided into two types: steel wheel type and tire type.
Mentioning the roller of the double steel wheel roller, can only make a brief introduction to the development of compression technology. People use the hoofs and feet of domestic animals to trample, rub and crush the soil, deal with the foundation of the house, fill the dams and dykes, until the middle of the 19th century, the western road works to gravel mainly for packing, compression is mainly by the natural rolling of the vehicle. the invention of the piezoelectric stone machine in 1858 promoted the crushing of gravel. Gradually, compression work with horse-drawn rollers appeared.
This is the first prototype of the road roller, 1860 France appeared steam roller, further promote and improve the construction technology and quality of gravel road, accelerate the progress. the early 20th century, the world recognized gravel road as the then highway in the world's wider promotion of the concept of compaction is gradually known, the roller also appeared in the construction site of each road, the invention of the internal combustion engine in the mid-19th century for the development of compaction equipment The invention of the internal combustion engine in the middle of the 19th century brought great vitality to the development of compaction equipment. The first internal combustion engine-driven roller was born in the early 20th century. Then came tire rollers, and bipedal rollers and bare wheel rollers appeared almost simultaneously. By studying the compression effect of hydrostatic rollers, people thought that increasing the weight of rollers could increase the line pressure of rollers and thus enhance the compression effect. As a result, efforts were made to develop large tonnage rollers for quite a long period of time, with tire rollers weighing more than 200 tons, but during this period, the changes in rollers were mainly reflected in the improvement of power and shape.
In the 1970s, with the development of hydrostatic transmission technology, hydraulic control technology and computer technology, the research on compression technology and compression equipment made great progress. First of all, hydraulic transmission is applicable to compaction machinery, and through the flow control of hydraulic system, the rotational speed of motor can be easily changed, and the vibration frequency of drum can be constantly adjusted, which greatly simplifies the complex transmission system. During this period, the research on vibratory roller mainly focuses on the optimization of vibratory roller parameters, which gradually realizes the stepless continuous adjustment of vibration frequency and vibration width, and improves the compression effect.
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