DETERMINING THE EFFORT OF BARLEY STRIPPING

Abstract

The determination of the effort of grain crop stripping will make it possible to estimate the power required for the stripping process and correctly select the energy parameters of the rippler and also assess the probability of ear separation during stripping. A series of experiments were carried out to determine the effort of stripping barley varieties Vladimir and Jaromir as well as a promising variety of bare-grain barley Nudum-95. The studies were conducted in the Kaluga region on the fields of Kaluga Research Institute of Agriculture. The measuring device is a load frame formed by a double-toothed stripping fingers and brackets and a strain gauge. The measurements were made with stripping fingers having a gap width of 3.3 and 3.6 mm. It was determined that stripping the ears of barley with stripping fingers with a slit width of 3 mm is impractical since there is a significant proportion of ear clipping. The authors determined the values of the stripping forces of the barley ears of the considered varieties and constructed stress diagrams. The greatest efforts were observed when stripping barley ears of the Nudum 95 variety with a comb of 3.6 mm. The range of efforts was 8.7...12.8 N. The smallest efforts were observed when stripping the "Vladimir" barley variety with a comb of 3.6 mm - they amounted to 6.9...9.1 N. The research results were statistically processed to determine the standard deviations and coefficients of variation of the stripping forces. The greatest coefficient of effort variation was obtained when stripping barley ears of the Nudum-95 variety with stripping fingers having a gap of 3.6 mm. The smallest coefficient of effort variation was obtained when combing the barley ears of the Vladimir variety with stripping fingers having a gap of 3.6 mm. The calculation results have proved the uniformity of statistical aggregates.