The relevance of the research is caused by the necessity of ensuring the uninterrupted extraction of coal by opencast methods when working in the coal mine. As the results of the analysis of the statistics of failures of traction motors EDP-800 BelAZ dump trucks, the main part of these failures is directly related to the unsatisfactory state of commutation. Thus, increasing the commutation stability of traction motors EDP-800 is an integral part of the task of improving the reliability of BelAZ dump trucks and, consequently, the entire process of coal mining provided by this type of dump trucks. The main aim of the research is to develop the technique for setting up the commutation of traction engines of dump trucks, which al lows increasing their switching stability and reducing wear of the elements of the collector-brush unit. The object of study is the traction electric motor EDP-800 dump trucks BelAZ. Methods: methods failure statistics analysis, mathematical analysis of the data of the on-Board truck monitoring system, experimental studies of commutation of traction motors, synthesis of the method for setting up the commutation. Results. Analysis of data on operation of traction motors EDP-800 BelAZ mining trucks revealed a high percentage of failures associated with poor commutation, which caused a high intensity of failure of the elements of the collector-brush unit and, first of all, electric brushes. The analysis of the data of the on-Board monitoring system of dump trucks and the experimental studies carried out at the test station made it possible to give recommendations for improving the switching stability of the traction motors of the EDP-800 pit dump trucks and to develop a method of configuring the commutation of these motors taking into account the operating parameters, which allows achieving a satisfactory commutation state, based on the criterion of minimizing the wear of electric brushes.
Enhancement of commutation stability of traction motors EDP-800 trucks
2018
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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Mechanical aspects of commutation in traction motors
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