Effect of hitch weight corrector-distributor on redistribution of load inside harrow-machine-tractor unit

Abstract

To ensure high crop yields, it is necessary to meet the basic agro-technological requirements. One of the main requirements is high-quality soil preparation for sowing. This is particularly important for those regions where this operation cannot be carried out in the fall due to the late completion of harvesting. In this regard, this operation is performed in the spring when the timing and completion of sowing work is limited. In the process of preparing the soil for sowing, such an operation as harrowing using heavy disc harrows is widely used. In this regard, the process of harrowing the soil using a harrow machine-tractor unit as part of the energy tool of the Kirovets tractor and a heavy disc harrow was chosen as the research target.  During theoretical and experimental studies, a device capable of redistributing the load between the propellers of the power device and the working bodies of the heavy disc harrow was installed on this machine-tractor unit. The harrow machine-tractor unit without an installed device for redistributing the hitch weight was used as a comparison. Based on the conducted theoretical studies, analytical relationships were obtained that allow determining the redistribution of the load inside the harrow machine-tractor unit. As a result of production (experimental studies), it was found that during the operation of the corrector of the hitch weight distributor of the harrowing machine-tractor unit, the front propellers were additionally loaded by 8470...9080 N and the rear propellers were unloaded by 8550...9120 N. The increase in the load on the front section of the harrow was 6500...6400 N and the decrease in the load on the back section of the harrow - 6480...6325 N.