IMPROVING THE SUPPORTING PROPERTIES OF THE KUBAN-LK1 MULTI-SUPPORT MACHINE

Considered Issues of increasing the reliability of the movement of the sprinkling machine (SM) on the example of "Kuban-LK1" were considered. Significant rutting leading to loss of patency due to increased rain intensity at the end of the SM (last bogies and cantilever) was noted, which ultimately leads to a decrease in machine performance. To eliminate this drawback, pneumatic tires with a profile width of 21.3 - 24 are installed on the outermost SM bogie, the rain intensity of which is 1.0 mm / min, and the length is 350 - 400 m, instead of serial tires 18.4 - 24. To eliminate this shortcoming, pneumatic tires with a profile width of 21.3 - 24 are installed on the extreme SM trolley, the rain intensity of which is 1.0 mm / min, and the length is 350 - 400 m, instead of serial tires 18.4 - 24. Modifications of SM with a length of 500 meters or more characterize increased intensity (ρ = 1.0-1.2 mm/min), and, accordingly, an increased value of surface water runoff, while the bearing capacity of the soil in the area of the last spans is up to 70 kPa. This determines the need to install wide-profile pneumatic tires with a profile width of 21.3 - 24 not on one, but on several last bogies. However, based on the high cost and weight indicators of pneumatic tires 21.3 - 24, according to theoretical and experimental studies, the authors recommend equipping the last SM bogies with pneumatic tires of a conventional profile 18.3 - 24 with a rigid flare, the radius of which is determined by reducing the wheel radius by an amount equal to the average depth of immersion of tires of a conventional profile, at the end of the irrigation season. The conducted experimental studies have shown that the installation of an expander on the pneumatic tires of the last bogies provided the indicators of the reference rutting ability, equivalent to those of the intermediate bogies.