СОВЕРШЕНСТВОВАНИЕ ТЕХНОЛОГИИ ДИАГНОСТИРОВАНИЯ ОПОРНЫХ УЗЛОВ ТРАНСМИССИИ АВТОМОБИЛЯ КАМАЗ-55111

Abstract

The paper presents trends in the development of automatic diagnostics systems for mechanical transmission units. (Research purpose) The research purpose is substantiating the technology of automatic identifying the pre-failure condition of transmission units. (Materials and methods) The supporting components of the KamAZ-55111 transmission with rolling bearings 50412 and 53610 were chosen as the research material. The analysis of existing methods of labor intensity, methods for calculating machine parts, reference information on bearings, finite element analysis of temperature fields and regression analysis were used. (Results and discussion) The characteristics of the indicators of the transmission support units (rolling bearings) were described, methods of their diagnosis were considered. The forces acting on the bearings on the secondary and intermediate shafts of the KamAZ-55111 car were calculated. The design, technological and operational parameters were used to calculate the temperature in the friction zone. In order to improve the diagnostic technology, temperature fields were simulated using the APM FEM CAD Compass 3D application. A device for automatic temperature measurement in the friction zone and a sensor for temperature measurement have been developed. (Conclusions) The reliability of the transmission support units of agricultural machinery is affected by the working conditions. It was established that the most effective method of diagnosing the complexity of the transmission is the method of thermodiagnostics. Analysis of the temperature in the friction zone of bearings 50412 and 53610 from first to fourth gear showed a decrease in temperature. The study of temperature field maps made it possible to establish the relationship between the temperatures in the friction zone and in the control zone of bearings 50412 and 53610. A recorder for automatic monitoring of the technical condition of the nodes has been developed and tested.