Математична модель переміщення зрізаної гички коренеплодів цикорію в направляючому каналі

Abstract

The increase in the production of root crops of chicory, which is a valuable technical crop, is restrained by the low level of mechanization of the main technological processes of their collection. The increased content of vegetable impurities or the remains of ghee in the collected root crops of chicory significantly reduces the quality of the raw material and, accordingly, the output of its processing products. On the basis of the analysis of the technological process of cutting root vegetables with L-shaped knives of a rotary vegetable cutter, a mathematical model was developed that functionally describes the movement of the cut vegetable in the guide channel of the vegetable cutting machine depending on the structural and kinematic parameters of the working organs of the cutting apparatus. On the basis of the solution of the mathematical model, the equation of the profile of the surface of the casing of the guide channel was obtained from the conditions of equal post-shock velocities and equal speeds of movement of the cut-off beam. It was established that the most acceptable is the profile in which the angle of collision, or the angle between the direction of the pre-impact velocity vector and the tangent to the profile of the guide channel at the point of impact is equal to 25 degrees, while the height of the profile of the guide channel is 1.2 m. For the value of the angle between in the direction of the pre-impact velocity vector and tangential to the profile of the guide channel at the point of impact 30...35 degrees. the initial speed of movement of the cut particle of the string is in the range of 9.5...10.5 m/s, and at the exit from the outlet throat – 2.5...3.5 m/s, while the time of moving the string along the guide channel is 0.15 ...0.2 s.