The results of experimental studies of the force rolling resistance MEZ-330 “Autotractor”

Purpose. Determine the effect on the tire pressure of the wheels of the wheels and the condition of the wheelbase differential on the force of rolling resistance of the MEZ-330 “Autotractor”. Methods. The studies were conducted experimentally by measuring the force of rolling resistance of the MEZ-330 “Autotractor”. System analysis and methods of statistical processing of the obtained research results are used. Results. The prototype of the new mobile energy vehicle MEZ-330 “Autotractor” combines the characteristics of a truck and a tractor, which is used both on transport operations on solid roads and on traction and technological operations on the field. The MEZ-330 “Autotractor” has three drive bridges and tires with adjustable air pressure, so research into the force of rolling resistance for such mobile energy facilities is relevant and poorly researched. The paper presents the methodology for conducting experimental studies and presents the measuring and recording equipment for conducting the research. The researches were carried out with the prototype of the mobile power tool MEZ-330 “Autotractor”, which was developed by NSC “IАЕE” together with PJSC “AvtoKrAZ”. The studies were conducted on asphalt road and field. The test conditions and method meet the requirements of GOST 7057-2003. According to the results of experimental studies, a graphical dependence was constructed, which reflects the dependence of the rolling resistance of the tire pressure on the wheels of the wheels and the condition of the axial differential on the asphalt road and the field. Conclusions. According to the results of studies, it is found that moving the asphalt road reduces the air pressure in the tires of the wheels of the MEZ leads to an increase in the force of rolling resistance by 168%, and the field – to reduce the rolling resistance of the MEZ to 46%. When moving on paved roads, it is necessary to increase the air pressure in the tires of the wheels to reduce the rolling resistance and to avoid movement with a locked wheelbase. Moving on the field, it is necessary to reduce the air pressure in the tire wheels in proportion to the hardness of the ground and to use the interlocking differential lock to obtain high traction. Keywords: mobile power tool, motor tractor, rolling resistance, tire pressure, wheelbase, hysteresis.