Estimation of parameters and operating modes of the screw cutting device

Abstract

The research is directed from the theoretical aspect to the development of the design of a new grinder, characterized by low energy and metal consumption. The work investigates the relationship of geometric parameters and speed modes of operation with quantitative and qualitative indicators of the screw cutter system. It is possible to increase the degree of chopping of the stems only by reducing the average cut length, i.e. by increasing the rotational speed screw knife. The experiments shows the average slice lengths and the corresponding productivity of the screw cutting pair depending on the speed of rotation of the knife. That for compliance with zootechnical requirements, modes n= 550-650 rpm.( lav = 8-4,5 sm ) - with vertical loading, and n=400-450rpm (lav = 5,5-4 sm) – at inclined feed at an angle β = 450. An increase in the frequency of rotation of the knife leads to a sharp decrease in the productivity of the cutting pair. The above numerical examples are selected in accordance with the parameters of the experimental setup and show good agreement with the experimental results.

Evaluation of the influence of inhomogeneous inclusions on the stems bend of agricultural plants

“…The presence in the structure of the rod of sections "b" that are inhomogeneous in stiffness and are not subject to bending (Figure 1), but having different lengths and numbers, leads to the need to refine dependence (1) or obtain new models.…”

“…The calculation was carried out in the direct calculation mode in the PC MatLAB system [9]- [11]. The initial data were taken for corn stalks based on field and laboratory studies of limbs within elastic deformations [1].…”

“…This applies primarily to the elastic moduli of compression and tension both along and across the stem fibers in the internodes. When the stem is bent, a signify can't difference in the moduli of elasticity leads to a shift of the neutral axis towards the stretched fiber, a change in the moments of inertia of the section, an uneven increase in maximum stresses, if they reach destructive values, the stem is broken either due to rupture of the fibers or due to their crushing [1][2][3][4][5].…”

Features of static distributions of the mass of parts of rose hips

“…In this case, all changes occurring in the system under the influence of a change in one of its parameters are traced. A systematic approach to assessing the performance of machines requires the improvement of the process of engineering calculation of equipment and technology for processing raw materials [1][2][3][4][5].…”