Сельскохозяйственные машины и технологии (Feb 2015)
Research of basic parameters of spreading device and power to flax stems moving
Abstract
Spreading of the flax stems in the swath is one of the most important technological operations with significant effects on the quality and quantity of the obtained products (fiber). Currently applied in serial flax pullers spreading out shield of passive type, in which the stems line is moving freely (under its own weight) has a number of drawbacks. A significant reduction in the quality of the swaths take a place at a wind speed of 5 m/s. Angle change of device to the horizon is only possible in a very narrow range. If the angle is more than this limit, so the technological process is troubled. Construction of spreading devices and stems spreading methods were analyzed. It was established that spreading device of active (forced) type was preferred on flax harvesters and balers. They forcibly move flax stems on all length of a stream to the spreading zone, exclude their distortion in a line and the building-up and insure reliability and quality of technological process performance of swath spreading. Using of active type spreading out devices has been insufficient studied as theoretical and experimental goal. However, the spreading devices of active type are underexplored. Researches and developmental works on development of the constructive and technological scheme of the spreading device and also mathematical model of the movement of stems on a table of the spreading device were carried out to receive qualitative retted straw (fibers). Constructive and technological parameters were proved. A new design of the active spreading device was developed. It was introduced on serial the flax harvesters. A method of calculation of rational parameters was offered. Necessary power for movement of flaxstems was determined.
