Tests of control hydraulics during operation of tractor plough set
1999
Petransky, I. | Drabant, S. | Varga, D. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
The mechanical-hydraulic control of three-point hitch of a ZTS 183 45 tractor at ploughing with a mounted PH 1 422 five-bottom moldboard plow was evaluated. The focus was to test control process quality. Tests have not unambiguously confirmed the energetic advantage of the power control. This mainly follows from experiments using the original directional valve. With mixed control, the influence of position control can be observed, which, in fact, has a significant positive effect on the qualitative agrotechnical coefficients of ploughing. Due to exchange of the directional valve the qualitative coefficients of the control process improved significantly even at the power control. From the viewpoint of further improvement in control quality of the three-point hitch tractor, it is desirable to equip these tractors with electrohydraulic control
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