Calculation of the chain drum with elastic fingers of potato harvesting machines

Abstract

In agricultural machines, chain transmission is widely used, the main advantage of which is a high load capacity. Therefore, in this article, the methodology for calculating chain drives in mechanical drives of agricultural machinery, namely in mechanical drives of potato harvesters, is presented. As a result of experimental and theoretical studies, the availability and safety margin of the selected chain drive of a loosening drum with elastic fingers of a potato harvesting machine was confirmed. In potato-harvesting machines, the movement of the executive working bodies is carried out. Analysis of the design of domestic and foreign potato harvesters showed that it is possible to obtain a good quality of potato harvesting in difficult soil and climatic conditions due to the use of machines of a simpler design with a mesh number of working bodies, but at the same time with their rational layout, the correct choice of transmission drives and ensured optimal modes work. The advantage of these transmissions is their large load capacity and the ability to work under dynamic loads. Therefore, in these investigations, the works are analyzed and the theoretical foundations and methods for calculating the working capacity of the wearable chain and the margin of strength of the chain transmission for dynamic loads are presented. As a result of the experimental theoretical research, the reliability of the working capacity and the strength reserve of the selected chain drive of the drum with elastic pulleys of the potato harvester is supported.