| 摘要 |
FIELD: mechanical engineering, in particular, gravitational transportation of grain heap through round-section pipes on grain cleaning combines. ^ SUBSTANCE: pipeline has rectilinear and curved portions with guiding member formed as trough set in inclined position before curved portion at distance L therefrom. Said distance is defined on condition that wear be minimal according to empirical equation: where y is wear, mm; l=0.3...08d is length of guiding member, mm; L is distance from guiding member to maximum worn site, mm; b =0.1...0.3d is width of guiding member, mm; alpha=20...40 deg is angle of inclination of guiding member; d is inner diameter of pipeline, mm. ^ EFFECT: increased wear resistance of pipeline. ^ 1 dwg, 1 tbl
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