Analysis of the influence of design parameters on the agro-ecological qualities of tractor tires

Abstract

Experimental studies of the impact of agricultural mobile machinery movers on the soil are seasonal in nature and require complex experimental equipment. The complexity of the physical processes occurring in the elastic wheel-ground system requires the introduction of many assumptions and limitations that reduce the accuracy of the results, according to the design of simulation models performed in the software environment. The aim of the research was to study the influence of the design parameters of the tire on the efficiency of the normal deflection along the contact spot zone X. Studies have shown that 65% to 77% of the normal deflection of the tire is used when passing the contact spot. The reinforcement parameters of the tire frame have the greatest impact on the efficiency of the normal deflection along the contact spot zone. With an increase in the number of layers of the frame cord from 2 to 8, the coefficient of usability of the normal deviation for the stroke of the contact spot decreases from 0.761 to 0.689, with an increase in the angle of inclination of the frame cords - decreases from 0.755 to 0.693.

In the transmission of the 1.4 drawbar category mobile power vehicle on the performance indicators of machine and tractor units

“…2222440, 2299135, 2398147, 2739100, etc.). His operation is described in detail in the literature [2,3,9,10,11].…”

“…The data of the conducted operational tests, which were carried out on plowing, continuous cultivation and sowing, showed that the studied EDM with optimal parameters [9][10][11], located in the power transmission of the 1.4 drawbar category MPT at the sufficiently high level provides protection for all components links of the MTU from fluctuations of external and internal links, which has a positive effect on the dynamic processes that occur in all elements of the MTU [2-8]. So, for example, as a result of testing an plowing MTU in the field, it was found that the application of EDM into the power transmission of the 1.4 drawbar category mobile power tool helps to reduce the amplitude of the hook force fluctuations compared to the serial version to 15 ... 20%.…”

“…In the process of comparative tests, serial and experimental machine-tractor units were aggregated by the same MTZ-80 tractor, which has in its power transmission proposed elastic-damping mechanism with optimal parameters for each technological operation [9,10,11] (with tests of the serial version of the EDM was blocked).…”

The dependence of the functional parameters of a tractor of traction class 1,4 as part of a cultivator unit on the type of tire model of size 18,4r-38 on propellers

“…One of the main ways to increase the performance indicators of any tire-tractor unit (TTU) is its operation at high speeds and the use of agricultural machines with a large gripping width, which implies the use of mobile energy means with high traction characteristics when aggregating [2]. But at the same time, normal and tangential stresses in the contact imprint of the MEM propellers with a supporting base are constantly increasing, which leads to an increased negative impact on the soil, up to its destruction [3,4].…”

“…For any wheeled MEM, the achievement of high traction performance, smooth running, the level of compacting effect on the support base, as well as the characteristics of movement along a given trajectory will be determined by the elastic properties of the driving wheel tires [2,11].…”