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Author: Мандраджиев С.

  • MECHANICAL SOIL TILLAGE IN ITS HIGHEST AND LAST STAGE

    • Мандраджиев С.
    • Трифонов А.
    Mechanization in agriculture & Conserving of the resources, Vol. 60 (2014), Issue 5, pg(s) 6-9
    • Abstract
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    At the present stage soil tillage is done mainly by applying the principles of mechanics. Its development is in three directions: improvement of the working bodies, increasing the productivity of agricultural machinery and power of tractors. All these directions lead to the accumulation of a wide variety of attachments, very large in size and mass of agricultural machines and tractors, which ultimately go to its limits. These features of the present-day stage are exhausted. It is necessary to look for other methods for tillage of the soil, using other principles of the physics or other areas of science.

  • DEGREE OF PERFECTION OF THE PLOW FOR COMPLETE CONVERSION OF THE SOIL LAYER

    • Мандраджиев С.
    • Трифонов А.
    Mechanization in agriculture & Conserving of the resources, Vol. 60 (2014), Issue 5, pg(s) 3-5
    • Abstract
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    Evaluation of the performance of soil tillage machines is carried out in one or more indicators making a quantitative comparison between them or their criteria or generalized ones. These methods can provide an independent evaluation of one or another machine. They can not determine the degree of perfection of the machine. Proposed a comprehensive evaluation criterion the degree of perfection of the machines. It is used to estimate the plow, created by us and a standard one. It is proved that the new plow has a degree of perfection – a complex criterion D = 0,727. In this case D – criteria is 1.35 times higher than the standard plow, i.e. the new plow is more sophisticated than the standard, but not ideal.

  • DISPLACEMENT OF PLOUGH LINKAGE POINT FOR FULLY REVERSAL OF SOIL LAYER

    • Мандраджиев С.
    • Трифонов А.
    Mechanization in agriculture & Conserving of the resources, Vol. 59 (2013), Issue 4, pg(s) 19-21
    • Abstract
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    It is known that the classical plough not fully reverse the soil layer. As a result, the top soil is placed at various depths below the surface of the field. Proposed a plough for fully reverse of the soil layer with extended rear plow body. As a result, an additional resistive force was created which displaces linkage point on the plow. Is obtained analytical dependence for the determination of the displacement of the linkage point of the plow for fully reverse of soil layer. The same relationship is illustrated for different numbers (2 to 10) plow bodies with working width of 35 cm.

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