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RESOURCE SAVING AS THE BASIS FOR IMPROVING MULTI-SUPPORTED SPRINKLER MACHINES

The purpose of the study is to determine the directions of improvement of the «Volga-SM» multi-support sprinkler machines with a polyethylene pipeline and to assess their effi ciency. The article presents the research results of a new multi-support sprinkler with cable-stayed construction «Volga-SM». The peculiarity of this machine is that the water pipeline consists of a steel pipeline that provides suffi cient rigidity of the spans, and a polyethylene pipeline installed parallel to the steel pipeline. Depending on the length of the machine and water consumption, the parameters of a small-diameter steel pipeline 102…114 mm and a polyethylene pipeline with a diameter of 63…160 mm are substantiated. Resource saving of the «Volga-SM» DM has been substantiated by reducing the pressure at the inlet to the machine from 0.45…0.6 to 0.35…0.5 MPa (by 20…28%), reducing the mass of the water-conducting pipeline and the number of support bogies. The ability to supply fertilizer solutions only through a polyethylene pipeline and near-surface sprinklers reduces corrosion of the pipeline and structural elements of the machine, which increases the reliability of the machine and its service life. The main advantages of the modernized cable-stayed machine with a polyethylene pipeline are presented.