JUSTIFICATION OF PARAMETERS OF THE ENERGY SAVING DIGGING WORKING ELEMENT

Abstract

At potatoes digging up by the potato-digger with the serial digging working elements the wide ploughshares transfer large soil volume to the separating working elements uneven that leads to their overload. As a result loss of potato tubers increases and quality of unit operation worsens. The energy saving digging working element increasing productivity and improving quality of work was developed. It was proved that for increase in productivity and quality improvement of work potato-diggers should be sectionalized, consisting of the main ploughshares of the reduced width and the intermediate digging ploughshare being in a zone of inter-row spacings. It was established that the digging working element processes the necessary part of a ridge in which potatoes tubers are located, and transfers the minimum mass of soil layer to the separating elevator. For this purpose length of the intermediate ploughshare which is in a zone of inter-row spacings should be less, than of the main ploughshares. In the course of operating the intermediate ploughshare does not dig out a lateral zone of a potato ridge and a zone of inter-row spacings with the greatest density, and only pick up the fallen tubers from inter-row spacings and directs the main elevator. Width of the main ploughshare and its traction resistance were proved theoretically after study of physical and mechanical properties of a potato ridge. Width of a ploughshare should be within 43-45 cm, the traction resistance of one ploughshare - 2.96 kN, a ploughshare tilt angle - no more than 24 degrees, and ploughshare length - no more than 4.75 cm. The energy saving вigging working element processes soil of a potato ridge by 15-25 percent less in comparison with serial, the traction resistance of a ploughshare decreases by 14-24 percent, losses of potato tubers decrease, and also unit productivity increases due to its speed rising.