Loads on cutter teeth for removing asphalt pavement

Abstract

Machines and equipment for asphalt pavement milling are widely used throughout the world. With the growth of road construction, the demand for this class of machinery also rises. At the same time, the optimization of design and technological parameters of the milling machines is impossible without a comprehensive study of processes of milling asphalt concrete with the working elements of a cutter. The article provides a brief overview of different approaches to find out the loads on the working bodies of various machines, as well as indicates the advantages and disadvantages of these approaches. We describe the design of a pendulum stand used to study the processes of milling asphalt concrete with a single tooth cutter. We also describe the method of operation of such a stand. The design of the pendulum stand allows us to determine the cutting work, the average, and the instantaneous cutting forces. The work also provides the result of tests of cutting elements during their interaction with samples of asphalt concrete of different grades that are widely used in road construction. We also show the non-linear dependence of cutting resistance forces on the temperature and thickness of penetration of a cutting element. It is noted that working with a slight tooth penetration leads to low energy efficiency of the work process. It is also noted that temperature affects cutting resistance forces significantly less in asphalt concrete containing high amount of gravel.

Field Investigation and Assessment on the Wear of Asphalt Pavement Milling Machine Picks

“…A milling machine at a set rational speed breaks up the asphalt layer at the required depth, and its grains are loaded into the truck or wheel loader bucket by a belt conveyor. The temperature of asphalt pavement has a large influence on the cutting resistance especially for asphalts with high content of bitumen and the energy consumption of asphalt milling process greatly depends on the amount of stone portion, bitumen content and the temperature (Furmanov et al 2019).…”

Influence of technological parameters on the behaviour in operation of the asphalt milling equipment

“…An experimental method -based on the use of a pendulum that hits an asphalt sample frontally -is used by Denis Furmanov [9] to study the forces that appear on the cutter's teeth during the milling operation of the asphalt clothing.…”

Transporto infrastruktūros bituminės dangos karštojo regeneravimo asfalto maišytuve technologijos procesų valdymo tobulinimas

“…Asfalto dangai frezuoti reikalingos energijos poreikį labai stipriai veikia frezuojamo asfalto granuliometrinė sudėtis, bitumo kiekis ir dangos temperatūra (Furmanov et al, 2019). (Gu et al, 2012) tirdami asfalto frezas susitelkė į rėžtuvo apkrovą frezavimo metu ir tas apkrovas veikiančius faktorius.…”

“…A milling machine at a set rational speed breaks up the asphalt layer at the required depth, and its grains are loaded into the truck or wheel loader bucket by a belt conveyor. The temperature of asphalt pavement has a large influence on the cutting resistance especially for asphalts with high content of bitumen and the energy consumption of the asphalt milling process greatly depends on the amount of stone portion, bitumen content and the temperature (Furmanov et al 2019).…”