Research the parameters of cutter bar of the rotor of a green stalk forage chopper

Abstract

Currently, special attention is being paid to the development of cattle-raising, fisheries and poultry in Uzbekistan. Cattle-raising, fisheries and poultry feeding green forage providing their intensive increasing as well decreases the gathering of additional oil in them. Therefore, a chopping device was produced to cut green crops, such as clover, maize as well legumes. Since the quantity and arrangement of cutter-bars in the rotor depends on the quantity and placement of the cut feeds to be of same length, the quantity of cutter-bars has been explored theoretical and experimental researches. According to theoretical researches, the greater the quantity of cutter-bars in the feed chopping rotor, the greater the work efficiency and the shorter the length of cutting. During the experiments, when the quantity of rotations of the rotor was 1500 rpm and the quantity of rotating of the chopper was 175 rpm, 6 cutter-bars were installed on a rotor with a diameter of 200 mm. It was found that metal consumption and cost were reduced compared to 8 cutter-bars. It is recommended to install 6 cutter-bars on a rotor with a diameter of 200 mm.

Determination of the total resistance of the ploughshare when the blade is blunted

“…It can also be noted that for every 5 0 changes in the angle of the occipital chamfer, the volume of crushed soil increases 1.5...2 times. Putting formulas (11) in (10) and after some transformations we get…”

“…Consider the operation of a ploughshare with a blunted blade. When working with blunted ploughshares, the total traction resistance increases [9][10][11][12][13][14]. Many scientists divide the total traction resistance into the resistance of the soil when cutting [15][16][17][18][19][20][21][22] with a blade Rp, the resistance of the soil during deformation Rd, overcoming gravity, inertia forces of the formation Ri [5,6].…”

The balance of power consumption of the process of grain grinding

“…In order to determine the required power of the developed grinding device and to determine its optimal technological mode, we will formulate the expression for determining the total amount of work in the grinding process [14][15]…”

Mathematical model of resistance to spreading forces using a bulldozer blade

“…The mathematical model [8,10,11,12,13] of soil shear resistance proposed by Yu.A. Vetrov has the following form: , (4) where φ -coefficient taking into account the cutting angle of the soil; msb -cutting angle 𝛼 = 300, corresponding specific shear force; δ -angle of external soil friction, degrees; m -coefficient representing the shear force along the sides of the cut soil.…”