Reliability indexes of vibrating platforms for compaction of construction mixtures

Abstract

Abstract In the article of experimental research and a particularly important prerequisite is to establish the required values with the least error, because the reliability of the information obtained from the processing of experiments is key to determine the true value of a parameter. According to the results of the study, data were obtained on the actual operating time for failure of the elements of the vibrating platforms VB-10V. The research identified the main prefabricated units and parts that failed: motor, gearbox, synchronizer, vibrator, propeller shafts, clutches. At the same time, cardan shafts and couplings failed the most. In some cases, the destruction of bearings in vibrating exciters has been demonstrated. The method of determining the number of experiments and estimating the error in measuring the studied parameters is based on the basic provisions of probability theory and mathematical statistics. The results of the research indicate a low level of reliability of the cardan shaft, which leads to a long downtime at an unscheduled time of repair, which is 0.8-1.2 hours in the presence of spare parts in stock. As a result of processing the statistical information of the cardan shaft reliability indicators, it was found that the average resource is 261.95 hours, the standard deviation is 53.2 hours, the coefficient of variation is 0.27.