Blade optimal design parameters determination

Introduction. In Kazakhstan in present time there is a large number of earthmoving works, which leads to an increase the demand for earthmoving-transport machines (ETM), particular bulldozers different types. various industries and construction projects, fleet foreign-made ETM operated constantly updated, including CIS countries (Russia, Belarus, Ukraine, etc.) type-sizes. So at sites, roads railways, are widely used: Caterpillar Corporation such as Cat (USA), Liebheer (Germany), Xuanhua Construction machinery Co, Ltd (HBXG) ZoomLion Shehwa (China); ChTZ-UralTRAK (Russia), etc. The railways with length several thousand kilometers impossible imagine without participation universal bulldozer. One most important components bulldozer working organ (WO) performance largely depends on what type blade installed it. Capacity (maximum prism drawing soil) one main characteristics determined by height width blade, manufacturers offer add-ons (visor) that makes it possible blade. Increasing allows more material be moved reduces spillage through top On other hand, increasing volume along offered side cheeks, giving shape bucket. They do not allow moving soil fall out sides (side rollers), thereby being moved. However, excessive capacity will require additional power costs during operation, cause loads machine accelerate intensity their wear, especially when moves up slope. pass depends, addition, possibility changing angle relative vertical horizontal plane. modern designs, positions inclination regulated 4 or 6 positions, depending category developed. purpose this study optimize geometric parameters establish trapezoidal taking into account interaction its frontal surface formed maximum soil. Materials methods. As materials, developed were used, process was investigated formation before dump, using graphic-analytical method research. Results. has been optimized means, permissible) have determined, traction factor Discussion conclusion. Until now, shapes promising designs mainly experimental contact area ground. Methods determining rational developed, theoretically grounded optimal WO, touch longitudinal section from (adapted) WO prism. calculating perspective design adapted proposed: – both cross-section determined; mathematical formulas new presented, namely: visor; visor knife-extender; defined: perimeter roller, forming front