期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2013

39

1

99-102

10.3724/sp.j.1238.2013.00099

湖南省重点科技专项（BK0981）；

本校为第一机构

对PC–B型带传动试验台进行改进：将主电机的传动轮改成切割装置,安装试验台架及夹持装置,更换更精确的压力传感器,研制出杂草切割试验台,以蒿草、狗尾草和牛筋草为材料,通过切割试验,确定杂草直径、含水率、电机转速、削切角对切割阻力的影响。结果表明,杂草切割阻力与电机转速平方成反比,与杂草直径平方成正比,与削切角平方成反比;不同杂草含水率对切割阻力影响不同,蒿草与狗尾草切割阻力与含水率平方成反比,狗尾草反之。单因素试验中,蒿草直径3.5～4.5 mm,风干10 h,含水率33.54%时,最大切割阻力为11.06 N。以蒿草为材料的正交试验结果表明,直径、含水率、削切角和电机转速依次影响切割阻力。...

PC-B type belt driving test bench was improved and modified into a test bench for cutting weed by modifying the driving wheel of the main motor into the cutting and the holding device and installing a pressure sensor which is more accurate than the original one. Humilis, Setaria and goose grass were cut to determine the influence of diameter and moisture content of weed, rotational speeds of motor and cutting angle on cutting resistance. The result suggests that cutting resistance was inversely proportional to the square of the rotational speed...