Justification of the parameters of pulling sections of units with transverse channels

Abstract

BACKGROUND: In modern harvesting technologies, the main technological operation is mechanized crops pulling. The flax-pulling machine with transverse band-disc channels is the most promising. However, the basic design parameters of pulling sections are not justified sufficiently, the peculiarities of their layout are not considered, the processes of moving plants through sections and pulling short-stemmed flax are not sufficiently studied, which reduces the effectiveness of its use.
 AIMS: Theoretical and experimental justification of the parameters and operation modes of pulling sections of the device with transverse band-disc channels.
 METHODS: Experimental studies to justify the parameters and operation modes of experimental pulling machines were carried out according to known and developed methods, and the assessment of flax products was carried out according to current GOST standards. The influence of the velocity of the unit and the width of the grip of pulling sections on the indicators of the agrotechnical and technological assessment of the operation of pulling device was determined.
 RESULTS: Dependences for determining the design parameters of a pulling section and the minimum height of plant stand suitable for mechanized harvesting were obtained, the conditions for finishing and moving plants in the zone of fixed guides were established. The structures of the experimental pulling machines were used to assess the unit velocity, the effect of the width of a pulling section and the elimination of the separation of technological currents of plants during processing on improving agrotechnical performance and increasing the yield and number of long fiber. The frame elements of the TLN-1.9P unit, are placed above the pull pulleys, and the operating width of a section is 0.38 m. In the TLN-1.9M and the TLN-1.9K units, they are located behind the pull pulleys, with the operating width of a section of 0.35 and 0.31 m respectively. As a result, the flax straw had higher quality indicators: 1.5 numbers for the TLN-1.9M and the TLN-1.9K and 1.25 numbers for the TLN-1.9P; the average yield of long fiber of these units was 13.41, 13.1 and 12.59% respectively.
 CONCLUSIONS: When assembling pulling machines with transverse band-disc channels, the elements of the frame structure should be positioned behind pulling drums, technical solutions should be used to ensure the kinematic operation mode equal to one, with the operating width of a section of 0.31 m for harvesting seed breeding and 0.35 m for harvesting commercial crops.