Authors: A.S. Nosenko, A.A. Domnitsky, E.A. Shemshura, V.V. Nosenko, I.A. Kirsanov

Title of the article: Experimental studies of the operation of hopper loaders with gravity loading of material

Year: 2023, Issue: 1, Pages: 58-65

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 622.619.7

DOI: 10.26730/1816-4528-2023-1-58-65

Abstract: The analysis of new technical solutions of tunneling hopper loaders, the principle of operation of which is based on the use of a translational hydraulic drive and horizontal unloading, is carried out. New technical solutions are proposed, which are based on the principles of using a gravitational load in conjunction with a transport element driven by power hydraulic cylinders. Works have been carried out on the theoretical study of the behavior of bulk material during its gravitational loading into the chute of a bunker-loader. The basic regularities of the behavior of bulk material are established, qualitative and quantitative dependences are obtained to determine the actual volume of material on the angle of inclination, the type of material characterized by the angle of repose, the angle of friction along the surface of the gutter, the angle of internal friction. In order to verify the adequacy and clarify the theoretical dependencies obtained earlier and the mathematical model describing the operation of hopper loaders with gravity loading, a set of studies was carried out on an experimental model installation. The method of conducting experimental studies and the results of statistical processing of the obtained results are presented. Comparison of the histograms constructed according to the results of experiments with theoretical distribution curves allowed us to assume that random values of the mass of the loaded material follow the normal distribution law. The degree of correspondence of the theoretical distribution to the experimental data is determined (testing the hypothesis of the normal distribution law). As a result of statistical calculations, taking into account the experimental results, the equation of theoretical dependence corresponding to the experimental curve is obtained.

Key words: hopper loader gravity loading experimental studies statistical data processing

Receiving date: 08.12.2022

Approval date: 01.02.2023

Publication date: 09.03.2023

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