Experimental method of determining bulk cargo losses quantitative characteristics during grappling overload

Abstract

The proposed experimental method of determining the losses of bulk cargo prone to dust formation allows, based on model researches results, to predict the bulk cargo losses amount when working with a grab in real conditions of cargo operations. The article presents developed by the authors experimental equipment, which makes it possible to obtain physical models of cargo scooping and unloading the grab processes, during which the most intense dust formation and the maximum losses amount of the reloaded cargo occur. In addition, the methods of using the specified experimental equipment are given, which provide for the determination of losses quantitative characteristics when using full-scale bulk cargo in researches, which is permissible under certain model parameters. Also, the methods provide for the possibility of determining the wind action speed influence on the amount of cargo losses from dusting, therefore, the researches were carried out in two stages - both in the absence of wind action during the grab operation, and in its presence. The range of wind impact velocities ranged from 0 to 10 m/s. As a result of processing modeling researches results, mathematical models of losses amount of a number of bulk cargoes during grappling overload considering wind impact were obtained.