凸圆滑切式减阻深松铲尖设计与试验  

Design and experiment of convex and sliding anti-drag deep-shovel tip

作　　者：王安[1] 马跃进[1] 赵建国[1] 李建昌[1] 郝建军[1] 马志凯[1] 马四龙 WANG An;MA Yuejin;ZHAO Jianguo;LI Jianchang;HAO Jianjun;MA Zhikai;MA Silong(College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding 071001, China;Baoding Tianwei Electrical Equipment Structure Co., LTD, Baoding 071000, China)

机构地区：[1]河北农业大学机电工程学院,河北保定071001 [2]保定天威电气设备结构有限公司,河北保定071000

出　　处：《河北农业大学学报》2019年第3期109-114,共6页Journal of Hebei Agricultural University

基　　金：国家“十三五”科技支撑重大项目粮食丰产增效科技创新项目(2017YFD0300907);河北农业大学理工基金重点项目(ZD201616);河北农业大学理工基金项目(LG201624)

摘　　要：针对深松作业阻力大、功耗高的问题,基于滑切理论设计了1种具有凸圆弧形滑切刃的深松铲尖,建立了深松作业过程中,铲尖上表面滑切刃与土壤的切削模型,分析了刀片受力情况,并依据滑切产生因素,推导出刀片刃口曲线表达式。田间试验表明:拖拉机前进速度为4.1 km/h,深松铲耕作深度为250 mm时,凸圆弧形滑切刃深松铲牵引阻力较国标深松铲的牵引阻力平均下降12.08%,达到了降低深松作业阻力的目的。Considering the problem of large resistance and high power consumption for subsoiling operation, a deepshovel tip with convex and cutting edge is designed based on sliding cutting theory. The cutting model of the convex and sliding deep-shovel tip is established during the subsoiling operation. The force condition of the blade is analyzed, and the expression of blade edge curve is deduced based on the factors of sliding cutting. Field experiments show that when the speed of the tractor is 4.1 km/h and the subsoiling depth is 250 mm, traction resistance of convex and sliding deep-shovel decreased by 12.08 % than that of standard deep-shovel, which can reduce the resistance of subsoiling.

关 键 词：深松 减阻 铲尖 凸圆式滑切刃 刃口曲线 田间试验 

分 类 号：S222.129[农业科学—农业机械化工程]