微耕机车轮在水田壤中的牵引性能试验  

Traction Performance Test of Micro-cultivator Wheel in Paddy Soil

作　　者：曾剑辉 黎静[1,2] 李澜 邱浩辉 吴重玖 包有刚 刘木华 薛龙[1,2] ZENG Jianhui;LI Jing;Li Lan;QIU Haohui;WU Chongjiu;BAO Yougang;LIU Muhua;XUE Long(College of Engineering,Jiangxi Agricultural University,Nanchang 330045,China;Key Laboratory of Modern Agricultural Equipment,Jiangxi Province,Nanchang 330045,China)

机构地区：[1]江西农业大学工学院,江西南昌330045 [2]江西省现代农业装备重点实验室,江西南昌330045

出　　处：《江西农业大学学报》2022年第1期198-204,共7页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金项目(51865018);江西省自然科学基金项目(20192BAB206025)。

摘　　要：【目的】了解微耕机车轮在水田中的牵引性能,可为新型水田轮的设计提供参考依据,提高其在水田表面的通过性。【方法】以直径为40 cm,宽度10 cm的微耕机橡胶轮为研究对象,在含水率为30%的土槽试验台进行单轮土槽试验,探究轮上载荷、滑转率、车轮扭矩以及挂钩牵引力之间的关系。【结果】车轮扭矩和挂钩牵引力会随着轮上载荷和滑转率的增加而呈现增加的趋势;滑转率受轮上载荷的影响较大,当轮上载荷为264.6 N时,橡胶轮的滑转率趋近于1;车轮扭矩随轮上载荷的增加呈现先增大后减小的趋势,且在轮上载荷为227.36 N车轮驱动扭矩达到最大,为25.74 N·m;挂钩牵引力随着滑转率的增加也呈现增大的趋势,最大达到31.36 N。【结论】由于松软水田壤承载能力和抗剪切能力较弱,该微耕机的车轮所能承受的最大载荷为227.36 N,此时所能提供的最大挂钩牵引力为31.36 N,滑转率为0.88,说明该类型车轮在水田壤中的行驶性能较弱,车辆的能源主要消耗在克服车轮行驶阻力上。[Objective]Researching the traction performance of micro-cultivator wheel in paddy field can provide reference for the design of new paddy wheel and improve its passing ability on the surface of paddy field.[Method]The micro-cultivator rubber wheel with a diameter of 40 cm and a width of 10 cm was used as the research object,the single-wheel soil box test was conducted on the soil box platform with moisture content of 30%,and the relationship among the wheel load,slip ratio,wheel torque and drawbar pull was explored.[Result]The test results showed that the wheel torque and drawbar pull increased with the increase of wheel load and slip ratio.The slip ratio was significantly affected by the wheel load.When the wheel load was 264.6 N,the slip ratio of the rubber wheel was close to 1.The wheel torque increased initially and then decreased with the increase of wheel load.The driving torque reached the maximum of 25.74 N·m when the wheel load was 227.36 N.The drawbar pull increased with the increase of slip ratio,reaching 31.36 N.[Conclusion]Due to the weak bearing capacity and shear resistance of soft paddy soil,the maximum load of the micro-cultivator wheel was 227.36 N,the maximum drawbar pull was 31.36 N,and the slip rate was 0.88.It showed that the driving performance of the wheel in the paddy soil was unsatisfactory,and the energy of the vehicle was mainly consumped to overcome the wheel driving resistance.

关 键 词：水田 微耕机 轮壤相互作用 滑转率 通过性 

分 类 号：S222[农业科学—农业机械化工程]