Study on round rice straw bale wrapping silage technology and facilities  

作　　者：Liqiao Li Defu Wang Xing Yang 

机构地区：[1]College of Engineering,Northeast Agricultural University,Harbin 150030,China [2]Key Laboratory of Swine Facilities Engineering,Ministry of Agriculture,Harbin 150030,China

出　　处：《International Journal of Agricultural and Biological Engineering》2018年第4期88-95,共8页国际农业与生物工程学报（英文）

基　　金：The authors acknowledge that this work was financially supported by the National Natural Science Foundation of China(Grant No.51405076);the 13th Five Years Key Programs for Science and Technology Development of China(Grant No.2016YFD0701300).

摘　　要：Specific to problems of the existing round bale wrapping machine in China,such as small application scope and failing to satisfy the wrapping demands of round bales of different specifications,a tumbler-type round bale wrapping machine based on wrapping silage with stretch film was designed.By theoretical analysis and preliminary experiments of the corresponding wrapping process,revolving speed of tumbler,speed ratio between tumbler and carrier rollers,and pre-load force of stretch film were determined as experimental factors,while wrapping time and consumption of stretch film per unit mass of round bale were determined as evaluation indexes.Furthermore,quadratic regression orthogonal rotational combination experimental design was adopted to carry out the wrapping experiment.The regression models were set up,and influencing rules of experimental factors on evaluation indexes were also analyzed.The optimal parameter combination scheme was revolving speed of tumbler of 31-32 r/min,speed ratio between tumbler and carrier rollers of 2.6,and pre-load force of stretch film of 20-22 N.Under such a circumstance,the corresponding wrapping time required was 37.7-38.9 s and consumption of stretch film per unit mass of round bale was 3.21-3.46 kg/t.The predicted values and the measured values of evaluation indexes basically coincided with each other and the relative error fell below 5%,which indicated that both the optimized regression models acquired through the wrapping experiment and the relevant parameter optimization results were reliable.To guarantee the quality of rice straw silage,the round bale should be wrapped by no less than five layers of stretch films through the utilization of the tumbler-type round bale wrapping machine.The study results could be used as references for research and development of the round bale wrapping machine.

关 键 词：round bale SILAGE wrapping machine tumbler-type analysis experiment 

分 类 号：G63[文化科学—教育学]