IMPGREENING AND MODERNIZATION OF EQUIPMENT FOR PROCESSING CONSTRUCTION WASTE INTO SECONDARY CRUSHED STONE

Abstract

The article addresses the pressing issue of processing reinforced concrete structures that have resulted from the destruction of buildings in Ukraine. Accumulating in significant volumes, reinforced concrete debris holds substantial potential for further use but requires efficient processing methods. The main focus is on the greening of equipment and modernization of jaw crushers to ensure their capability to effectively crush this type of waste, which is a critical task in the context of sustainable development and the implementation of environmentally safe technologies in the construction industry. The study analyzes existing jaw crusher designs, their technical characteristics, and possibilities for modernization. A detailed examination of crusher operation parameters, such as the angle of capture, jaw stroke, eccentric shaft rotation frequency, and the strength and rigidity of the main components, was conducted. The research findings demonstrate that optimizing the angle of capture and adjusting the rotation parameters of the eccentric shaft can significantly enhance the crusher's performance, thereby confirming the effectiveness of the proposed modifications. To achieve the set objectives, the study also focused on the wear resistance of the jaw crusher's working elements, particularly the jaws and the eccentric shaft. An analysis of the main factors affecting the wear of these elements during the crushing of reinforced concrete debris was conducted, and measures to improve their durability were proposed. Specifically, the potential use of new, more wear-resistant materials for manufacturing the jaws was explored, as well as the optimization of the crusher's thermal regime to reduce the wear of the eccentric shaft. The results of the study confirmed that the application of these approaches not only increases the crusher's efficiency but also significantly extends the service life of its working elements, which contributes to reducing operational costs and enhancing the profitability of the reinforced concrete debris processing process. The scientific novelty of this research lies in the development of optimized solutions for the greening of equipment and modernization of jaw crushers, which ensure increased efficiency in processing reinforced concrete debris of varying strengths. Particular attention was paid to the importance of properly selecting the angle of the plates and other parameters that affect equipment productivity. The implementation of the obtained results could have a significant impact on the development of construction waste processing technologies and contribute to environmental safety in Ukraine's construction industry.