For many years, the Kazan State Agrarian University has been engaged in research to find new highly effective technical solutions for processing seeds of various crops in the conditions of agricultural producers. One of these developments is a machine for removing the husk from the seed of the aeromechanical type. A distinctive feature of these machines is using in the design an additional working body, made in the form of a mesh confusor, located on the exhaust pipe of the fan-thrower. The aim of the work is mathematical modeling of the movement of achenes in the working areas of aeromechanical devices. The study uses the positions of gas dynamics and analytical geometry. The size and direction of the air flow in the working areas of the seed material are influenced by the geometric parameters of the main working bodies. According to the mathematical solutions, it can be seen that the components of the air flow velocity in the transverse and longitudinal directions change along the length of the confusor. And to determine the parameters of the movement of the achene in the working areas of machines for removing the husk from aeromechanical seeds, it is necessary to know the physical, mechanical and technological properties of seeds, the parameters of the air flow, as well as the structural and technological parameters of the surfaces of the main working bodies. The resulting mathematical models describe the movement of the seed air mixture in the working area, with a numerical solution on a computer you can get a graphical image of the trajectory of the movement of seeds in the confusor, which allows to build a nomogram for calculating the parameters of the confusor and segment, thus justifying the main design and technological parameters of the machine for removing the husk from the seed of the aeromechanical type.
Development of agriculture in conditions of market relations is accompanied by aggravation of the problem of efficiency of use of technics. In this connection, the task of scientists is to increase the actual volume of work performed by tractor units, reducing the cost per unit of production. The high cost of tractors, the lack of personnel, the reduction of technical equipment of farms and the increase in the volume of products produced in the agro-industrial complex, natural and climatic conditions impose special requirements on technical service to maintain tractors in working conditions. The working state of tractors is the state at which values of parameters, which characterize ability to execute the given functions, correspond to normative-reference and design documents. During the operation of tractors in agriculture under the influence of various factors, wear of their parts and knots. The indicator determining the value of wear is the residual resource of aggregates and knots of technics. In the article the questions of influence of residual resources of basic aggregates and systems of tractor on frequency of failures of various groups of complexity are considered. Experimental research on determination of dependencies of residual resources of tractor units and frequency of failures of different groups of complexity, on the basis of which the rules of replacement of the unit whose resource are exhausted, is carried out, i.e. is replaced with a full of the resource (new) or on the aggregate after overhaul.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.