graduate student
Moscow, Moscow, Russian Federation
employee
Moscow, Moscow, Russian Federation
UDC 624.132.3
Russian Library and Bibliographic Classification 399
Study objective. To intensify methods of soil mining, much attention is paid to changing the shape of the dump surface, which is associated with conducting research to assess changes in the indicators of digging forces and machine performance, as well as the specific indicator i.e. the energy intensity of the digging process. The introduction of equipment with an improved and scientifically based form of the dump surface will allow us to solve the tasks set above. The task that the paper is devoted to. The proposed improved design of the multi-section blade allows varying the position of the sections by moving them back and forth, changing the angles of installation and cutting, which makes it possible to achieve results related to reducing digging efforts and increasing machine productivity. The result is achieved by changing the extension of the hydraulic cylinder control system for each section. The grounds for the operability of the proposed design is modern calculation methods based on 3D modeling of forces in the working equipment of the dump. The research methods include substantiating the choice of the design scheme of the structure, methods of sealing and load distribution on the working body (blade) in the most unfavorable case of loading. The novelty of the work. Calculations of the forces in the working equipment of the blade, carried out on the basis of 3D modeling, made it possible to find out the effect of a distributed load on the blade in the case full drawing prism on the change in forces in the rods of hydraulic cylinders at the time of their loss of stability, which is the cause of their failures. The study results. The analysis of calculations made it possible to identify the physical nature of loading of hydraulic cylinder rods in the proposed design of the bulldozer blade and to quantify it. Conclusions. Changing the load on the blade makes it possible to automate the process of controlling the blade sections to avoid exceeding the load on the working equipment of the blade sections.
dump, sections, equipment, automation, workflow, soil, development, 3D modeling
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