History and technical development of road rollers.

The development history of the road roller is relatively long. Since ancient times, the compaction technology has been improved step by step, and the road roller equipment is constantly evolving.

History and development

When it comes to road rollers, I have to give a brief introduction to the development of compaction technology. As early as in ancient times, people used the hooves of herds to trample, knead and tamp the soil to deal with the foundation of houses and compact dams. And river embankments, before the middle of the 19th century, Western road engineering was mainly paved with gravel, and the compaction was mainly by natural rolling of vehicles. It was not until the invention of the stone rolling machine in 1858 that the development of gravel roads was promoted. Gradually, horse-drawn rollers were used for compaction work, which was the earliest prototype of road rollers. In 1860, steam rollers appeared in France, which further promoted and improved the construction technology and quality of gravel roads, and accelerated the progress. At the beginning of the 20th century, the world recognized that the gravel pavement was the best pavement at that time and was promoted all over the world. The concept of compaction gradually became known to people, and road rollers also appeared on various road construction sites. In the middle of the 19th century, the internal combustion engine The invention brought great vitality to the development of compaction equipment. The first road roller powered by an internal combustion engine was born in the early 20th century. Then came tire rollers, sheep foot rollers and bare wheel rollers almost at the same time. People have studied the compaction effect of static rollers, and believe that increasing the weight of the roller can increase the line pressure of the roller, thereby improving the compaction effect. real effect. Therefore, for quite a long period of time, people have devoted themselves to the development of large-tonnage rollers. The largest tire rollers once weighed more than 200 tons. However, during this period, the changes in rollers were mainly reflected in the improvement of power and appearance.

Technological development

In the 1970s, with the development of hydrostatic transmission technology, hydraulic control technology and computer technology, the research on compaction technology and compaction equipment has made great progress. First of all, hydrostatic transmission is applied to compaction machinery. By controlling the flow of the hydraulic system, the speed of the motor can be easily changed, and the continuous adjustment of the vibration frequency of the road roller can be realized, thus greatly simplifying the complex transmission system. During this period, the research on vibratory rollers mainly focused on the parameter optimization of vibratory rollers, and gradually realized the stepless continuous adjustment of vibration frequency and vibration amplitude, which improved the compaction effect.

Nowadays, road rollers are divided into car rollers and walking rollers, which can be selected according to the needs of the construction site, so as to achieve twice the result with half the effort and contribute to the country’s highway construction.