Design and Experiment of Rotary Cutter Disc Type Flat Stubble Cutting Device for King Grass Harvester

HUAN Xiaolong, YOU Yong, WANG Decheng, LI Sibiao, ZHU Lu, LIAO Yangyang

Abstract

In view of lack of special mechanical harvesting equipment, a rotary cutter disc flat stubble cutting device of King grass harvester was designed. According to the biological characteristics of King grass and the harvest requirements of flat stubble cutting, the overall structure design of the cutting device was completed. Through theoretical analysis, the key structures and working parameters of cutter and conveyor were determined. ANSYS/LS-DYNA was used to simulate and compare the cutting effects of single moving knife cutting and moving fixed knife combination cutting. The results showed that the flatness of cutting section with moving and fixed cutter was better than that with single moving cutter. When the cutter head was cutting at low speed, the cutting power consumption of the combination of moving and fixed cutter was less than that of single moving cutter. The conveyor had good conveying effect and can realize the continuous stubble conveying of King grass stalk after cutting. The cutter test-bed was built. Through NSGA-Ⅱ algorithm, the optimal parameter combination of cutter was determined: the blade clearance was 2.98mm, the cutter head speed was 84.7r/min, and the cutter head inclination was 28.65°. Under this parameter combination, the stubble breaking rate was 8.66% and the unit cutting power consumption was 7.78mJ/mm2. On this basis, the field experiment was carried out, and the experimental results were basically consistent with the optimization results. The results showed that the overall harvest quality was better when the rotary cutter disc flat stubble cutting device was applied to the harvest of King grass.


Keywords: King grass harvester, stubble cutting, rotary knife disc cutter, tower-wheel conveyor

 

Download Full Text:

PDF


References


TU Xuchuan, LIU Guodao, BAI Changjun, et al. Primary studied on planting technology of pennisrtum purpureumxp typhoidevm cv. Reyan N0.4[J]. Chinese Agricultural Science Bulletin, 2008, 24(10) ; 533 -535. (in Chinese)

ZHANG Zongling, HAN Zengde, LI Xiaodong, et al. Optimization of parameters for stalk chopper of corn harvester for reaping both corn stalk and spike[J]. Transactions of the Chinese Society for Agricultural Machinery ,2018 ,49 ( Supp. ) ;266 -274. (in Chinese)

LIU Wei, HUANG Xiaomao, MA Li’ na, et al. Design and experiment of special header of oil sunflower combine harvester[ J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51 (8) ;83 -88 ,135. ( in Chinese)

YOU Yong, WANG Hongda, HU AN Xiaolong, et al. Design and experiment of roller crushing device of King grass harvester J]. Transactions of the Chinese Society for Agricultural Machinery ,2021 ,52(4) : 134 - 142. ( in Chinese)

SHI Yinvan, CHEN Man, WANG Xiaochan, et al. Dynamic simulation and experiments on artemisia selengensis orderly harvester cutter [J]. Transactions of the Chinese Society for Agricultural Machinery ,2017 ,48 ( 2) : 1 10 — 1 16. ( in Chinese)

W ANG Jing. Research on the cutter test system based on high-speed photography technology for arundo donaxl harvester [ D] . Wuhan: Huazhong Agricultural University, 2006. (in Chinese)

ZHANG Yanqing, CUI Qingliang, GUO Yuming, el al. Experiment and analysis of cutting mechanical properties of millet stem [J]. Transactions of the Chinese Society for Agricultural Machinery ,2019 ,50(4) : 146 - 155 ,162. (in Chinese)

ZHANG Ji, YU Yongtao, YANG Qiyong, et aL Design and experiment of smashed straw unit for high stubble maize double header[J ]. Transactions of the Chinese Society for Agricultural Machinery ,2018 ,49 ( Supp. ) ;42 -49. (in Chinese)

LAI Xiao, HE Guiqing, LI Shangping,et al. Experimental research on the axial vibration of the cutting system for sugarcane harvesters [ J ]. Transactions of the CSAE, 2021 ,37( 14) ;12 -20. (in Chinese)

ZHOU Jinghui, LI Shangping, YANG Daiyun, et al. Influence of sugarcane harvester cutterhead axial vibration on sugarcane ratoon cutting quality[J]. Transactions of the CSAE, 2017,33(2) -.16 -24. (in Chinese)

XIE Luxin, WANG Jun, CHENG Shaoming, et al. Design and speed optimization of leaf-crushing and tail-breaking system of sugarcane harvester [ J ]. Transactions of the CSAE, 2016,32(6) ;50 -57. (in Chinese)

ZHENG Zhiqi, HE Jin, LI Hongwen,et al. Design and experiment of straw-chopping device with chopping and fixed knife supported slide cutting[ J ]. Transactions of the Chinese Society for Agricultural Machinery, 2016 ,47 ( Supp. ) : 108 - 1 16. ( in Chinese)

LIU Yang, HUANG Xiaomao, MA Li’na, et al. Design and test of static sliding cut angle constant cutting machine for chain oil sunflower harvester header [J]. Transactions of the Chinese Society for Agricultural Machinery, 2021 ,52( 1 ) ;99 - 108. (in Chinese)

SUNIL К M, TONY E G, ALAN С II. Effect of blade oblique angle and cutting speed on cutting energy for energycane stems [J]. Biosystems Engineering, 2015, 133:64 -70.

PHILLIP С J, CLAIRMONT L C, SUNIL К M, et al. Cutting energy characteristics of miscanthus x giganteus stems with varying oblique angle and cutting speed[J]. Biosystems Engineering, 2012, 112(1) :42 -48.

XIE Luxin, WANG Jun, CHENG Shaoming, et al. Optimisation and dynamic simulation of a conveying and top breaking system for whole-stalk sugarcane harvesters[ J ]. Biosystems Engineering, 2020, 197; 156 - 169.

WU Hongxin. Research and simulated analysis for corn stalk harvesting technology and equipment [ D ]. Beijing: Chinese Academy of Agricultural Mechanization Sciences, 2013. (in Chinese)

LI Changying. Bionic blade of corn harvester for leaving high stubble and its cutting mechanism [D]. Changchun; Jilin University, 2014. (in Chinese)

LIAO Yitao, LIAO Qingxi, SHU Caixia, et al. Matching of cutting and feeding speed for reaping Arundo donax 1. based on ANSYS/LS [J]. Transactions of the Chinese Society for Agricultural Machinery,2011 ,42(Supp. ) :30 -34. (in Chinese)


Refbacks

  • There are currently no refbacks.