An experimental setup was made to create a machine for the purpose of grinding root crops with specified dimensions. The object of study is the functioning of the root crop chopper. Experiments and analysis of the data obtained were carried out using the theory of experimental design. When conducting a statistical analysis, comparisons of the two groups on quantitative scales were based on the non-parametric Mann-Whitney test. To describe the quantitative indicators, the mean value and standard deviation in the format «M±S» were used. To use the ability to predict some target quantitative variable based on several independent variables (factors), the multiple regression analysis method was used. The value of static significance was fixed at a probability level of error of 0,05. Statistical data processing was performed using the Statistica 10 and SAS JMP 11 application software packages. One of the main indicators of the quality of a machine is its energy intensity. As a result of processing the experiments, regression dependences and response surfaces were obtained, which reflect describing the processes that take place. According to the results of the regression modeling of the response «Energy intensity of the process E, W», it can be concluded that the most important combination of factors is the set: «Root and tubers diameter», «X4⋅x5» and «X4⋅x4». The model has a high level of forecast quality (R2 = 98 %).
The sustainable functioning of the agro-industrial complex largely determines its scientific and technical support. One of the key directions of the development of agricultural science is the mech-anization of animal husbandry processes. When solving a complex of problems, great attention is paid to the preparation of feed, namely the grinding of root-club crops. This makes it possible to significantly increase the return of each feed unit. As a result of a wide review of literary sources and a thorough analysis of modern designs of root-club grinders, it became possible to solve the technical problem of its modernization by creating a simple as well as reliable design. The peculiarity of the modernization consists in the fact that the electric motor is mounted on the cover of the housing with the help of a flange, which is its component element, besides, the axis of rotation of the shaft structure is aligned with the axis of rotation of the disk structure. Loading hopper is also installed on cover. For this purpose, the cover has a hole for the driving shaft of the electric motor, as well as a window for passage of root clubs from the cavity of the receiving hopper to the space of the housing. Disk is rigidly mounted on free edge of shaft structure. Body is fixed on base by means of uprights vertically and with formation of free space under its bottom and base for installation of unloading neck, as well as reservoir for treated root crops. The discharge neck is structurally made in the form of a funnel with the formation of a conical component at the top and a cylindrical com-ponent at the bottom. In addition, the axis of symmetry of the funnel is aligned with the axis of rotation of the shaft. Its conical component is attached to the outer surface of the bottom structure, and the cylindrical component of the funnel is oriented to the container for the treated material. Concentric holes are made in bottom for passage of processed root crops from cavity of body into structure of discharge neck. The principle of energy saving is carried out by supplying treated fodder to the discharge neck device and further to the receiving vessel mainly due to gravity of the treated fodder.
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