Parameters of a disc harrow housing used on unrooted felling sites

The article examines the influence of the technological parameters of a disk harrow housing design on its traction resistance when it is used for basic tillage on felling sites where stumps are not removed. Resource-saving technologies of reforestation, which make it possible to exclude uprooting of stumps are ecologically friendly and significantly increase the effectiveness of reforestation operations. Disc tools are much more reliable than ploughshares in the conditions of undeveloped felling sites and outrank them in cross-country capacity. One of the main advantages of disc harrows is their individual attachment to the gun frame, thus practically eliminating clogging of the housing with plant residues and soil. The studied new design of the disc harrow housing provides the required quality of soil treatment by complete rotating of the soil layer and its preserving as a continuous band laid next to the furrow. A description of the design and operating principle of such a disk harrow housing is given. The proposed disk harrow housing will increase the technical level of modern forest tillage tools, in particular disc harrows thus ensuring their competitive advantages among other forest machines used for plowing. Experimental studies were performed in the field, and a regression model of the traction force of the disc harrow body was obtained to determine its optimal parameters that ensure a high-quality technological process of tillage with the lowest energy consumption. The mathematical model can be used in the design of forest tools.