Accelerated Testing Installation for Working Parts of Livestock Machinery

The development of domestic technologies aimed at improving the durability of agricultural machinery, including assemblies, units, mechanisms, and individual parts, represents a key stage in agricultural production in the Russian Federation. To select wear-resistant materials for manufacturing working parts and to evaluate the effectiveness of surface strengthening technologies under specific operating conditions, it is essential to conduct accelerated service life tests using modern methods and tools. (Research purpose) To design a testing installation for accelerated corrosion-mechanical wear testing of working parts used in agricultural machinery and livestock equipment, particularly those involved in feed production and preprocessing. (Materials and methods) A methodology was developed for service life testing of cutting elements used in agricultural machinery for livestock and feed production. The study presents a kinematic diagram describing the testing installation, outlines possible mounting configurations for the working parts on the installation’s shaft, and assesses the levels of mechanical and corrosion wear experienced by the working parts under accelerated testing conditions. (Results and discussion) The control module of the installation includes an electrical schematic and a control panel which enables the regulation of shaft rotation frequency, selection of rotation direction (forward and reverse), and emergency braking. The electric motor was selected and the target shaft rotation frequency specified. Parameters of the V-belt transmission drive system, including belt type and quantity, diameters of the drive and driven pulleys, and transmission ratio, were calculated to ensure the required shaft speed. A strength calculation was performed to simulate a potential jamming scenario involving one of the middle-row knife holders and the results confirmed an adequate safety margin. (Conclusion) The proposed installation enables accelerated service life testing of working parts in machinery and equipment and allows evaluation of the effectiveness of surface hardening technologies. The testing methodology is based on determining corrosion-mechanical wear in a substrate that simulates the physicochemical properties of plant environments under specified cutting process conditions. The proposed installation complies with the required strength parameters and maintains its functionality even under potential overloads.

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