JUSTIFICATION AND OPTIMIZATION OF CONSTRUCTIVE-TECHNOLOGICAL PARAMETERS OF CHOPPER FOR MAKING ADDITIVES FROM CONIFEROUS PAWS
In the aft balance of many farms in the Volga-Vyatka region during adverse climatic periods are not enough high-quality roughage. In winter, not enough vitamins and carbohydrates, which can be met through food resources of the forest that remain in large numbers in clearings and thinnings. The content of vitamins, carbohydrate and trace elements needles are not inferior, and in some cases superior to greens of cultural meadows. Shredded pine needles to Supplement traditional feed improves the physiological condition of the animals and increases their productivity. Grinding of softwood legs is carried out in accordance with the requirements for universal or hammer crushers and shredders for agricultural purposes, which are not produced by industry and farms are available in limited quantities. The study aimed at creating chopper coniferous paws on the base of chippers RB-750 using the disc and drum cutting machines in a single Assembly unit. Milling is carried out with self-tightening material knives followed by cosmelenia beaters of the drum. Theoretically justified the location of the inclined protiviti that interacts with the knives of the disc and drum relative to the axis of the cutting unit (option a). Constructed nomogram, which allows to determine the optimum value of slip ratio and a predetermined parameter of a displacement of the knife blade relative to the disc radial position. Experimental studies aimed at optimizing the values of parameters of working bodies of the chopper: the corners of the feed material in a vertical plane, sliding, pinching, tightening, cutting speed, diameter of sieve hole, position protiviti allowed to achieve performance up to 0,45 t/h with a specific energy consumption of 7.2 kW·t/h. Finished product has a weighted average size 2,5 mm. The effectiveness of development confirmed by acts of implementation in the farms of Kirov region.