UK: Досліджено конструктивні рішення задніх стінок скрепера. Проведені дослідження виконано у CAD Solid Works Simulation напруженого стану задньої стінки та поляризаційно-оптичним методом під моделювання процесу розвантаження ковша. Запропонована нова конструкція задньої стінки скрепера відрізняється більш рівномірним розподілом напружень, знижує загальне напруження на 30–40 % за умови розташування гідроциліндра.
EN: Statement of the problem. Current requirements for metal construction and road machines should meet the needs of durability and efficiency. Increased power shift forms of working to reduce metal construction, cheaper replacement for the cost of materials lossless bearing properties and other physical and mechanical properties are particularly relevant [1].
Analysis of publications. An analysis of design features improve scraper shows the trend aimed at increasing the efficiency of filling the bucket. It is not the problem of unloading soil with a scraper , which also requires additional energy. Increasing the efficiency of the discharge can be achieved by improving the shape elements bucket design.
The aim is to determine the stresses that occur on the back wall scraper in the process of unloading in the changing height of about fixing cylinder.
Achieving this goal requires solving problems:
– develop model and conduct experimental research on load models rear walls scraper in a changing height mounting over the cylinder;
– determining optimal settings back wall scraper.
Conclusions:
1. Analiz stress diagrams in CAD Solid Works Simulation and polarization–optical method showed that the traditional design of the rear wall scraper requires improvement in terms of optimal configuration and strength.
2. A new design of the rear wall scraper has a more uniform distribution of stresses reduces the overall intensity by 30–40 % at the location of the cylinder in the ratio = 0,5.
