CAJ | 학술논문

近年来，我国畜牧行业发展迅速，苜蓿种植面积已达13．3万 hm2，并逐年增加，苜蓿割草机在牧草收获中发挥着越来越重要的作用。但传统割草机存在着收获质量差、无法收获倒伏植株等问题，降低了苜蓿种植的收益，影响苜蓿种植的积极性。为此，提出一种与常规割刀形状不同的新型割刀形式，其刀刃部分在垂直刀片方向上存在小角度的扭转，使割刀在作业时产生一种倾斜切割状态，能够极大地提高割草机的刈割质量和适应性。同时，对割刀的工艺、可靠性以及失效形式进行分析，为合理设计割刀、延长割刀使用寿命提供理论依据。
근년래，아국축목행업발전신속，목숙충식면적이체13．3만 hm2，병축년증가，목숙할초궤재목초수획중발휘착월래월중요적작용。단전통할초궤존재착수획질량차、무법수획도복식주등문제，강저료목숙충식적수익，영향목숙충식적적겁성。위차，제출일충여상규할도형상불동적신형할도형식，기도인부분재수직도편방향상존재소각도적뉴전，사할도재작업시산생일충경사절할상태，능구겁대지제고할초궤적예할질량화괄응성。동시，대할도적공예、가고성이급실효형식진행분석，위합리설계할도、연장할도사용수명제공이론의거。
With the rapid development of China's animal husbandry in recent years , alfalfa planting area has reached 13.3hm2 million and increases year by year .Alfalfa mower plays an increasingly important role in forage harvesting . However , with a poor quality harvest and can not gain lodging plants , traditional mower reduced the benefits of planting alfalfa and had an impact on the enthusiasm of planting alfalfa .The analysis proposed a new type of cutter which is different in shape with the traditional cutter; its blade has small inclination angle in the vertical direction , making the cutter in a tilt cutting state during the operation and greatly increasing the mowing quality and adaptability of the mower . The analysis also analyzed the cutter process , reliability and failure mode and provided a theoretical basis of rational de-sign of cutter and extending the service life of cutter .