Open AccessDetermination of critical depth forces of cutting soils and energy consumption of chain scraper trench excavators
Author(s) -
Svyatoslav Kravets,
Vladimir Suponyev,
Aleksej Goponov
Publication year - 2021
Publication title -
vestnik harʹkovskogo nacionalʹnogo avtomobilʹno-dorožnogo universiteta
Language(s) - English
Resource type - Journals
eISSN - 2521-1773
pISSN - 2219-5548
DOI - 10.30977/bul.2219-5548.2021.92.1.192
Subject(s) - excavator , trench , scraper site , energy consumption , work (physics) , computer science , mode (computer interface) , mechanical engineering , engineering , materials science , electrical engineering , layer (electronics) , composite material , operating system
The presented results of scientific research are aimed at solving the problem, which is associated with an increase in the productivity of the development of trenches for laying engineering communications due to the use of new less energy-intensive soil development processes with the working equipment of chain trench excavators. The aim of the work is to establish the regularities of the interaction of the working equipment of the chain scraper excavator with the soil, in which the cutters work in the critical cutting depth mode. Among the tasks that are directed to achieve the goal, it was necessary to establish the influence of soil development processes in these conditions on the technical parameters of the machine. The methodology for solving the problem is based on the idea of the theory of soil mechanics and the provisions on the critical depth of soil cutting.Applying this knowledge to the operation of the cutters of the chain excavator for cutters guarantees the consumption of the minimum specific energy and obtaining the maximum performance of the machine. Existing studies do not give a complete picture for calculating the parameters of trench excavators in which the cutters of the working body operate in the mode of critical cutting of the soil, which in turn does not allow carrying out a comprehensive calculation of the chain trench excavator and assessing the energy efficiency of its operation. The result of the research is the obtaining of theoretical dependencies for determining the cutting forces of the soil by the working body of the excavator under the conditions of the critical depth of the work of its cutters, as well as dependencies for calculating the energy indicators of the machine. The originality of the solution to the problem lies in an integrated approach, namely, it took into account not only the influence of the work of the cutters in conditions of a critical depth of cut on the technical parameters of the machine, but also the properties of the soils that are being developed. The practical significance of the results of the research is to obtain dependencies that can be used as the basis for the engineering methodology for the integrated calculation of chain-type trench eesquators in which the cutters operate in the critical blocked and half blocked cutting mode of the soil.