Authors: Yu.A. Lagunova, A.A. Zhilinkov, V.V. Makarova, A.E. Kalyanov, G.D. Buyalich

Title of the article: Measuring system for the study of deformation processes in the bearing elements of dump trucks

Year: 2024, Issue: 6, Pages: 43-53

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 629.018+629.3.024

DOI: 10.26730/1816-4528-2024-6-43-53

Abstract: The relevance of the work lies in the fact that when operating heavy-duty mining dump trucks, the problem of fatigue damage in frame elements, frame (load-bearing) structures is acute. The technological processes of restoration or ongoing repair of frames are very complex, require highly qualified repair workers and the availability of special equipment. In some cases, the restoration of frames is accompanied by significant downtime, high material and labor costs. There was a need to assess the stress-strain state (VAT) of the entire structure and individual frame elements. The aim of the study is to develop a measuring system for the experimental study of the deformation processes of the frame (load-bearing system) of heavy-duty dump trucks and further improvement of its design, as well as optimization of driving modes. A schematic diagram of a strain gauge measuring system has been developed, measuring equipment and devices have been selected for it. The places of installation of sensors (strain gauges) have been determined - areas in the zones of connection of the crossbar and spars. The installation and verification of the entire strain gauge measuring system were carried out, the necessary settings were made and the operability was verified. Preliminary experimental studies were carried out during the operation of a mining transport machine directly in the quarry. A significant amount of data on the values of deformations (loads) in digital and graphical representation has been obtained. Verification of the measuring system and all its elements has been carried out, and the required settings have been made. Tests and preliminary experimental tensometric studies have confirmed that the results obtained are adequate to the processes of deformation of the frame structure of the studied transport vehicles and correspond to changes in operating conditions, as well as traffic modes. The basis has been created for the next stage of strain gauge research.

Key words: strain gauge dump truck frame structure deformation processes measuring system

Receiving date: 01.11.2024

Approval date: 15.11.2024

Publication date: 12.12.2024

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