К РАСШИРЕНИЮ ЭКСПЛУАТАЦИОННЫХ ХАРАКТЕРИСТИК ЗЕМЛЕРОЙНО-ТРАНСПОРТНЫХ МАШИН

Abstract

This article presents materials related to the development of a promising dump design for various types of bulldozers used on high-strength soils. The most important parameter of bulldozers is productivity, which depends on the amount of soil moved by the blade in one working cycle, characterized by the volume of the drawing prism. A characteristic sign of overloading of dumps is the slipping of tracks or tractor wheels. This phenomenon significantly affects the reliability of components and parts of bulldozers, reducing their productivity. To eliminate this, rotary dumps can be used, allowing them to be rotated at a certain angle in both directions relative to the longitudinal axis of the machine, but their restructuring is quite time-consuming and not always effective. The analysis of numerous sources made it possible to develop a prom-ising technical solution at the level of inventions, which makes it possible to efficiently perform earthmov-ing operations related to the treatment of high-strength soils. As a result of analytical studies, taking into account the cutting resistance force of 7 kN, the geometric parameters of the gear engagement (gear wheel-rail) were calculated, the engagement module was adopted m = 10 mm. Recommendations are given on the choice of gear wheel and rail material – 45 normalized steel. For angular rotations of the side sections of the blade, it is recommended to use a hydraulic cylinder with a double-sided rod with an internal cylinder diameter of dv = 40 mm and a rod diameter of ds = 20 mm, at a working fluid pressure of p=10 MPa. It is recommended that the blade rods be made of 80x60 Steel 85 pipe, which ensures their stability during the operation of the bulldozer blade.