ABSTRACT

Optimizing configuration of the plough bottom to minimise soil disturbance is an inexpensive way to improve soil quality. This work applied mathematical modelling to improve geometric and physical parameters of a ploughshare body design that define the ploughing performance. The optimised reversible plough was tested in the field by comparing it with a conventional PLP-6-35A plough, which has a rectangular-shaped ploughshare. The trapezoid-shaped design of the ploughshare blade was found to be the most effective solution among the examined. Based on the empirical results, it can be concluded that the draft resistance of trapezoid-shaped plough bottom is 9.9% lower compared to that of the reference one. In addition, the study found that using a trapezoid-shaped plough bottom instead of rectangular-shaped ploughshare blades could increase the ploughing speed by 5.4%, from 2.13 to 2.25 m/s. This effect stems from the reduction in tractor slippage and allow saving 11.09% of fuel. The proposed mathematical model can be used to build a reversible plough with optimised technological characteristics.

摘要

优化犁底部的结构以最小化土壤干扰是提高土壤质量的廉价方法。这项工作应用数学建模来改善犁share式车身设计的几何和物理参数，这些参数定义了耕作性能。通过与传统的PLP-6-35A犁头（具有矩形犁头）进行比较，对优化的可逆犁进行了现场测试。研究发现，犁share叶片的梯形设计是最有效的解决方案。根据经验结果，可以得出梯形犁底部的抗风性比参照物低9.9％。此外，研究发现，使用梯形犁犁底部而不是矩形犁ough叶片可使犁耕速度从2.13 m / s增加到2.25 m / s 5.4％。这种效果源于拖拉机打滑的减少，可以节省11.09％的燃油。所提出的数学模型可用于构建具有优化技术特性的可逆犁。