Theoretical Study of the Vibrations Transmitted to Frame from Internal Combustion Engine of Locomotives and Diesel Locomotives and Their Influence on Labor Conditions of Locomotive Crews

The paper is devoted to the creation of the track machines with high power and productivity. In the constructions of them, the vibroactive working bodies are widely used, and it is inevitably accompanied by an increase in vibro-acoustic characteristics. The consequence of this is not only the deterioration of the labour conditions for motorists and locomotive crews, but also for acoustic and vibration effects on the residential area when it is operating in the residential development. One of the main sources of the vibration effects of locomotives and diesel locomotives is an internal combustion engine mounted on a load-bearing frame where the driver’s cabs are set. To develop practical recommendations for reducing vibration levels at workplaces of locomotive crews and machinists to sanitary standards, it is necessary to study the regularities in the formation of the vibration spectra in the corresponding frequency ranges. Therefore, in this article, we present the results of the theoretical studies of natural vibration frequencies of the main vibration source of the internal combustion engine and the vibration levels created at the attachment points to the base frame and the attachment points of the driver cabs which determine factually the choice of the engineering solutions for vibration protection systems.