TRACTION LOADS OF A SEEDING UNIT BASED ON A SELF-PROPELLED CHASSIS

Abstract

The calculation of the traction forces arising from the interaction of the working bodies of the sowing unit based on a self-propelled chassis with the soil, taking into account the agrotechnical requirements for performing the technological operation of selective sowing, will allow to justify the parameters of the working bodies and the choice of optimal working speeds of the unit. (Research purpose) The research purpose is evaluating the traction resistance arising from the interaction of the working bodies of the sowing unit based on the self-propelled chassis of the VTZ-30SSH with soil. (Materials and methods) Carried out the calculation of the traction resistance of the sowing unit based on a self-propelled chassis, using technical characteristics, reference data and mathematical dependencies. (Results and discussion) In order to complete the machine-tractor unit with working bodies, an analytical calculation of the traction resistance of the sowing unit based on the VTZ-30SSH self-propelled chassis for sowing cereals, legumes and oilseeds, in the range of operating speeds of the chassis, taking into account the agrotechnical requirements for the technological operation of selective sowing. It was shown that the soil background is a field prepared for selective sowing. In order to determine the mechanical energy costs of a selective seeder based on a self-propelled chassis, the traction resistance arising from the interaction of working bodies with the soil and mechanical losses in the unit were calculated. (Conclusions) It was found that the evaluation of the traction resistance of the working bodies for the first, second and third gears is up to 20 percent of the nominal traction force of the self-propelled chassis or the degree of loading of the self-propelled chassis. It was stated that the calculations of the traction loads of the sowing unit will be used to justify the parameters of the working bodies of the breeding seeder for sowing grain crops in order to reduce material costs.