Dynamic Performance of Rotary Tilling Tractor with a Feedback Power

从发动机到旋耕轮轴的动力传递系统被认为是一个闭环系统，包括通过驱动轮轴的反馈动力。通过理论分析和土槽试验，得出了旋耕阻力反馈功率、返回功率和行驶功率的计算公式;推导了发动机到转轴的动力传递效率公式;为验证这些公式的适用性，弄清旋耕阻力的实际值，研制了旋耕阻力、发动机功率和车轮功率的测量系统。利用该系统进行了土槽试验。4）试验结果表明，旋耕阻力方向为30- 60 °。从正方向。动力反馈比为0.07-0.11，动力反馈比为0.02-0.04，动力传动效率为0.92-0.97，动力传动效率为0.2-0.4，动力传动效率约为90%。

The power transmission system from an engine to a rotary tillage axle is regarded to be a closed-loop system including a feedback power through a driving wheel axle. The results obtained from theoretical analysis and soil bin tests are as follows:1) Equations for predictions of feedback- and return-powers and a travelling power from a rotary tillage resistance were derived.2) The power transmission efficiency from an engine to a rotary axle was formulated.3) In order to verify the applicabilities of these equations and clarify actual values of rotary tillage resistance, the measurement system for a rotary tillage resistance, the engine power and wheel powers was made. Soil bin test was performed by use of this system.4) According to the test results, the direction of rotary tillage resistance was 30-60deg. from the forward direction. The tillage power return and feedback ratios, and the engine-rotary power transmission efficiency were 0.07-0.11, 0.02-0.04, 0.92-0.97, 0.2-0.4 and about 90%, which were well approximated by the equations formulated above.