Abstract
For the zones of “risky farming” characteristic of the Far East of the Russian Federation, the natural production conditions of the region are an important problem in preparing the soil for further basic agricultural work. So, when carrying out early spring agricultural work, due to presence of a solid underlying layer in the form of permafrost, they shall be completed in operational terms no more than 10 days, until the permafrost base thaws and the soil has not lost its bearing capacity. In addition, due to the peculiarities of the relief, the soil does not thaw equally in depth everywhere, which reduces the quality of field work and harrowing, as the most common operation, namely. This article provides theoretical and experimental studies on the adaptation of a wheeled tractor as part of a machine-tractor unit (MTU) used in harrowing to natural production conditions by installing a device that automatically regulates the load on the working body of the disc harrow or on the propellers of the energy device, depending on the conditions of use or the state of the motion surface.
Highlights
The primary cultivation is a set of measures, the main purpose of which is to provide favorable conditions for the growth of agricultural crops
It shall be noted that the moisture content of the upper soil layer allows agricultural work, and the lower soil layer, due to the increased moisture caused by the above conditions, has a low bearing capacity
As an example of the aforementioned device capable of automatically adjusting the traction and coupling properties of an energy device and the load on the working body of a disc harrow, the use of a device of a new promising design, which, when installed on a tractor, allows to adjust and redistribute the weight of the machine-tractor unit (MTU) between the tractor and the harrow as necessary to increase the vertical load on a tractor or harrow with an inventive level, high industrial applicability and novelty, which will allow solving the task of increasing the efficiency of the MTU (Figure 1-2)
Summary
The primary cultivation is a set of measures, the main purpose of which is to provide favorable conditions for the growth of agricultural crops. In the Amur Region, soil preparation for sowing begins as the soil thaws to the depth of cultivation, usually in late April or early May of the current year This operation, including sowing, must be completed as soon as possible, since as daytime temperatures increase, intensive thawing of the permafrost subsoil occurs, and precipitation at the same time sharply reduces the bearing capacity of the soil. It shall be noted that the moisture content of the upper soil layer allows agricultural work, and the lower soil layer, due to the increased moisture caused by the above conditions, has a low bearing capacity In these conditions, in order to implement the possibility of MTU movement, it is necessary to adapt the used machine and tractor units to the above specific features of the region, by reducing the normal pressure of the propellers on the soil in particular
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