Application of thermal effect as a means to combat ground-and-machine part adhesion

Abstract

Abstract The main cause of the efficiency decrease in productivity of earthmoving machines is the adhesion and friction increase during the development of wet bonded soils under freezing point. This problem exists both in Russia and abroad. When developing frozen clay and wet soils operational winter, the bucket filling and the excavator speed is much lower in winter than in summer. Wet soil, contacting with cooled walls of the bucket, quickly freezes to them, reducing the useful capacity of the bucket and makes unloading difficult. The analysis of self-regulating heating elements has been reviewed. Three TM-40, TM-60 and SRL 30-2 heating elements are considered as possible options to use directly on the excavator bucket to loosen adhesive bonds by heating the working surface of the plant. The results of experimental research are presented, one-factor equations of plate heating temperature regression for each of the heating elements are presented, temperature-time characteristics of three heating elements are constructed, comparative analysis of three TM-40, TM-60 and SRL 30-2 heating elements is made.