DETERMINATION OF ANGLES OF SLIDING AND ROLLING OF POTATO TUBERS ON SURFACES CONSISTING OF DIFFERENT MATERIALS

ABSTRACT

The use of quality seeds is of great importance in achieving high yields in potato growing. This article highlights the results of a study of the interaction of potato tubers with surfaces consisting of various materials.

АННОТАЦИЯ

Использование качественных семян имеет большое значение в достижении высоких урожаев в картофелеводстве. В данном статье освещены результаты исследования взаимодействия клубней картофеля с поверхностей состоящих из различных материалов.

Ключевые слова: картофель, рабочая поверхность, отверстие, взаимодействие, угол, качение, скольжение, рабочая скорость.

Keywords: potato, working surface, hole, interaction, angle, rolling, sliding, working speed.

One of the most basic quality indicators of seed endings is due to the fact that the dimensions of the endings are the same. It is also possible to achieve economic efficiency by separating the consumed potatoes from the seeded potatoes. Therefore, the introduction of sorting machines with high efficiency in the field of potatoes is of urgent importance. Currently, sorting machines with different working equipment are used in the sorting of potato endings. But they have several disadvantages [1]. Taking into account the shortcomings of the existing machines, we have been offered a new construction machine [2]. And the working surface of the machine-made consists of an elastic material that is placed in an inclined position in two directions relative to the horizon, having square-shaped holes of different sizes. In the study of the working processes of the proposed machine, of all types of sorting machines in general, the study of the interaction of endings with parts of machines is of paramount importance. Various studies have also been conducted in this regard, and we have chosen the most optimal of them for ourselves, and we have used this method in determining the friction between the finishes and the working Surface [3].

In the technological processes of potato finishing sieving machines, the movement of the finishing occurs along different surfaces. These surfaces can be in the form of smooth whiteboards or lattice surfaces of sieves.

Also, since The Shape of the ends is very diverse, it is practically impossible to determine in advance the nature of their movement along with the working and auxiliary surfaces of the sorting machines. The analysis of the interaction of the finishing potato sorting machines with the working bodies shows that the finishing can slip and roll along the surfaces. For the study of the potato end pile moving along the inclined surface, moving in the transverse direction, it is necessary to determine the slope angle at which the ends slip along the flat surface and bars and start rolling [3].

An experimental device was developed to study the motion of the ends (Fig. 1). The device for determining the slip and rolling angles is made of a steel sheet with a flat bottom and rubber-coated, the edges of which are made in the form of a lattice with a board. One side of the latch is connected to a manually operated block device to change the slope angle of the latch. The rolls of the ends are placed loosely for the second of the lattice to determine the coefficient of friction. To determine the rolling friction coefficient of the ends, the slope of the lath is slowly increased until the first end begins to roll [3-9].

Figure 1. Schematic view of the device prepared for determining the angles of sliding and rolling

1-the main part of the device; 2-block fixture; 3-angle gauge; 4-handle; 5-potato bricks alignment.

To determine the slope angle of the lathe with high accuracy, a scaled angle meter was used, which corresponds to the angle in the amount of 10ˊ per millimetre [11-15]. The slope of the Latok was increased until the last finisher in the nests of the ends began to roll. To determine the frictional slip angle of the ends, the ends were placed in the phenoplast frame, which was placed at a certain distance from the inclined surface. Rolling and sliding angles on the grate surface of the ends were determined in the same way. Only as a working surface was used a grid, which had square holes and was used in the experimental version of the machine [16-20].

The results of the experiments were processed statistically. The results obtained are presented in the table below:

Table 1.

Results of experiments

Analysis of the data in the table shows that the angle of sliding motion of the ends on flat surfaces is greater than the angle of rolling motion. The rolling angle takes the values of the range. The experiments also used a stack of ends of different sizes and recorded the starting angle of the first and last ends. The angle of sliding on the grid surface increased. This was due to the interaction of the ends with the lattice surface elements.

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