Development chopper device that chops baled rough fodders

• Published in: IOP conference series. Materials Science and Engineering 2020-07, Vol.883 (1), p.12158
• Main Authors: Gapparov, Sh, Karshiev, F
• Format: Article
• Language: English
• Subjects: Alfalfa; Animals; Cutlery; Cutting; Farms; Households; Knives; Livestock; Office equipment; Rotor speed; Shredding; Splitting; Stems
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/883/1/012158

Livestock in Uzbekistan is one of the main sectors of agriculture and it is based on family livestock farms. In family farms, animals are fed with rough fodder, including corn stalks, alfalfa hay, camel-thorn, and pressed straw. However, households, due to the lack of small shredders, provide compressed feed to animals without chopping. As a result, 25-30% of the feed goes to waste, and losses increase. Therefore, a small installation was developed for chopping compressed coarse feeds and mixing them with concentrated feeds, and its chopping apparatus and type of knives were experimentally investigated. The density of stalks of alfalfa, corn, camel thorns, and wheat straw was 81.9 kg/m3; 81.3 kg/m3; 82.5 3 kg/m3 and 78.4 kg/m3 and their main part 76.2-94.4% were stems, and the rest of the leaves, branches, and panicles. When the rotor speed increased from 1200 to 1350 rpm, the stems are chopped qualitatively, i.e. fully comply with the original requirements. At the same time, the splitting of the stems is 83.5 - 94.0%, which also corresponds to the initial requirements. Depending on the type of knives, the cutting fraction with a length of 30-50 mm is 68.6-82.0%, the fractions with a length of more than 50 mm - 3.3-26.3%, and the fractions with a length of less than 30 mm - 5.1-14.7%. The splitting of the stems varies from 78.9% to 94.7%.