• MECHANIZATION IN AGRICULTURE

    Experimental research of agricultural bridge unit in the state of harrow aggregate

    Mechanization in agriculture & Conserving of the resources, Vol. 66 (2020), Issue 3, pg(s) 97-99

    From the standpoint of energy saving, the issue of research of agro-bridge units in the composition of new agricultural lands adapted to them is important and relevant tools that operate on the principles of track and bridge farming. One of the latter is a heavy tooth harrow with flat segments. Experimental determination of the characteristics of the agronomic bridge harrowing unit in its composition, in order to establish compliance of its parameters with the basic principles of the effective implementation of track and bridge farming, was adopted as a research objective. Experimental research was carried out both according to generally accepted and developed methods, and provided for the use of modern strain gauge and control equipment with analog-digital conversion of signals from information sensors. The processing of experimental data was carried out on a PC using probability theory, regression, and correlation-spectral analysis. Physical objects of researches were wide-track agricultural bridge construction vehicle TDATU with its track width of 3.5 m and harrowing machine (BZSS-1.0 type). According to the results of experimental tests of agricultural bridge harrowing unit as part of the dental harrow proved its good adaptability to work in the units of track and bridge farming and high quality of the technological process. The latter is also a consequence of the fact that the movement of the agricultural bridge is carried out on the compacted traces of a constant tramline, whose roughness profile is low-frequency in comparison with the longitudinal profile of the harrower. The constructive version of the tooth harrow is well reflected in the nature of its unevenness in traction resistance. It is established that the fluctuations of the harrow’s traction resistance express a random function in which there are no harmonic components. The coefficient of variation of resistance fluctuations on the hook of the agricultural bridge during harrowing is no more than 10%. The latter indicates a high stability (low variability) of the process of harrowing the soil, has a positive impact on the stable movement of the agricultural bridge unit.

  • MECHANIZATION IN AGRICULTURE

    Study of specialized wide-rail agriculture unit for rail farming

    Mechanization in agriculture & Conserving of the resources, Vol. 66 (2020), Issue 2, pg(s) 59-62

    A promising direction for further sustainable development of agriculture not only in Ukraine but also in the world is the introduction of innovative technologies, which should include the track and bridge systems of agriculture. These systems provide the basis for the automation and robotization of most crop production processes, ensure efficient implementation of “precision” and “digital” farming and provide other significant benefits. Scientists have not sufficiently studied the issue in this regard, and there is currently no effective methodology for implementing the potential technical-operational and technological properties of specialized broad gauge means of agricultural production mechanization for the rutting system of agriculture. Therefore, from the point of view of solving the food problem in the world, especially during the COVID-19 pandemic, as well as developing resource-saving technologies based on the principles of the rutting system of agriculture, in accordance with the trends of scientific and technological progress in the field of mechanization – improving the level of functioning of technical means through integrated mechanization, electrification, automation and robotization – this direction of research is relevant. The aim of the research is to substantiate the main advantages and effectiveness of the use of a specialized vehicle for rutting agriculture by justifying its main parameters. As a result of these studies, it was found that the energy saturation level of specialized agricultural vehicles moving in the tracks of a permanent technological track should be 23.5 kW·t−1, in realizing the traction force at the level of 6.37 kN by 1t of their weight. Losses of the field area for the engineering zone when using agricultural equipment with a wheelbase width exceeding 6 m are 5-6%. The economic effect of the use of broad-wheeled agents in wheat cultivation technology is at least 150 € per hectare.

  • MECHANIZATION IN AGRICULTURE

    Propagation of the least (minimum) quasi-periodic wave in a double-periodic plate

    Mechanization in agriculture & Conserving of the resources, Vol. 65 (2019), Issue 3, pg(s) 93-94

    There is a method examined for studying propagation of waves in a double-periodic plate, based on the application of the boundary element method. By means of this method “transparency windows” were found for a wave that propagates in a direction perpendicular to the diagonal of the elementary period of the system

  • MECHANIZATION IN AGRICULTURE

    CONTEMPORARY TRENDS IN THE IMPROVEMENT OF BEET TOP REMOVING MECHANISMS AND MACHINES

    Mechanization in agriculture & Conserving of the resources, Vol. 64 (2018), Issue 3, pg(s) 78-82

    There are considered contemporary trends in the improvement of the technological process for the preparation of sugar beet roots for digging out and directions of the development of the designs of the working tools for the removal of the tops. Analysis of contemporary machines has been carried out according to the indicators of their quality, energy consumption and efficiency of the technological process. Tasks have been determined for creating new working tools. It is noted that at the current stage of development of the beet top removing machines the efficiency and quality problems of the top separation process are solved by increasing the number of operations, which is an energy-consuming, material-intensive and costly way to improve the technological process and the working tools. And, as a consequence, it is necessary to look for technical solutions, technologically allowing operations required only for the preparation of the root crops to be harvested. Therefore, further research should be conducted in the direction of creating a working tool that combines good tracing of the heads by cleaners with low-energy intensity of the cutting tools.

  • MECHANIZATION IN AGRICULTURE

    THEORETICAL INVESTIGATION OF A REAR-MOUNTED LINKAGE FOR WIDE-SPAN TRACTORS

    Mechanization in agriculture & Conserving of the resources, Vol. 64 (2018), Issue 1, pg(s) 11-14

    The work is devoted to the investigation of the peculiarities of aggregation of wide-span tractors (vehicles) with agricultural machines and implements. As a result of the conducted studies, it has been established that, from the point of view of the control impact (the turning angle of the driven wheels) and the disturbing impact (the turning angle of the mounted implement in a horizontal plane) exerted by the wide-span tractor, the most desirable is such a variant of configuration of the mounted device in which the instantaneous centre of rotation, formed by the convergence rays of its lower links, is in the centre of the mass of the tractor. When using wide-span tractors (vehicles) with mounted implements of the high 4N and 4 categories in accordance with the ISO 730: 2009, one should consider a possibility to configure them both for a three-point and a two-point scheme.