ANALYSIS OF WORKING FLUID CIRCULATION IN REMOTE HYDRAULIC UNITS OF HYDROFICATED MACHINES
The article discusses the influence of the purity of the working fluid on reliability. The theory of stagnation of the working fluid in the remote units of the hydraulic drive of modern mobile machines is presented. A tendency towards an increase in the number of remote nodes in modern mobile machines is described. The issue of high sensitivity of modern hydraulic drive elements to contamination of the working fluid is disclosed. A simplified hydraulic diagram with a group of elements is considered, on the basis of which a description of the processes occurring in a hydraulic drive with the presence of remote nodes is made. The definition of the expression "remote node" is derived and the negative consequences of the presence of remote nodes in the hydraulic system are given. The influence of the purity of the working fluid on the reliability and reliability of the hydraulic drive of mobile machines is considered. The main places of installation of filter elements are given. The data on the influence of the working fluid purity on machine downtime and hydraulic drive failures are given. The studies devoted to assessing the influence of the purity of the working fluid on the reliability of the hydraulic drive of mobile machines are presented. The economic indicators of expenses of modern companies for maintenance and repair of equipment are given. The substantiation of the relevance of the topic of increasing the reliability of the hydraulic drive of mobile machines is given. The current trends in the field of scheduled preventive maintenance of hydraulic drives of mobile machines are considered. Investigations of samples of working fluid from the hydraulic drive of a mobile machine with remote nodes are presented. The analysis of the results of the study of samples of the working fluid has been carried out. Regularity was revealed between the remoteness of the sampling site of the working fluid from the hydraulic valve. The geometry of the remote unit is considered and the ratio of the volumes of the working fluid is determined. The data on contamination of the working fluid at the stage of manufacturing the hydraulic drive of mobile machines are presented. A conclusion is made about the influence of solving problems with stagnation of the working fluid on the reliability of the hydraulic drive and the effectiveness of modern methods of preventive maintenance.