青贮玉米收获机喂入切碎试验台设计与试验  

Design and test of the feeding and shredding test bench on silage corn harvester

作　　者：李向阳 李晓康 张锋伟 宋学锋 潘伟阳 侯晶涛 Li Xiangyang;Li Xiaokang;Zhang Fengwei;Song Xuefeng;Pan Weiyang;Hou Jingtao(College of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou,730070,China;Gansu Academy of Mechanical Sciences Co.,Ltd,Lanzhou,730070,China;Key Laboratory of Grassland Agricultural Machinery in Gansu Province,Lanzhou,730070,China)

机构地区：[1]甘肃农业大学机电工程学院,兰州市730070 [2]甘肃省机械科学研究院有限责任公司,兰州市730070 [3]甘肃省草地农业机械重点实验室,兰州市730070

出　　处：《中国农机化学报》2024年第7期41-47,共7页Journal of Chinese Agricultural Mechanization

基　　金：甘肃省科技重大专项国际合作(18ZD2WA003);国家自然科学基金(32260432);甘肃省科技计划重点研发项目(21YF5NA092)。

摘　　要：经过收获并发酵制成的青贮玉米饲料营养价值较高,是我国畜牧业可持续发展的物资基础。针对青贮玉米收获机存在切碎质量差、喂入时秸秆易缠绕堵塞、能耗高等问题,设计喂入高度可调、喂入辊可反转、切碎质量较好的青贮玉米收获机喂入切碎试验台,本试验台可以完成青贮玉米输送、喂入、切碎、抛送等工作过程。对试验台的关键零部件进行静力学分析和模态分析,以验证其强度和可靠性。以秸秆切碎长度和长度合格率为主要性能参考指标,对该试验台进行性能试验,试验结果表明当喂入速度为2.5 m/s,切碎滚筒转速为1 700 r/min时,切碎长度平均为15.6 mm,合格率为96.1%,生产效率为15 000 kg/h,各项指标均符合国家标准和行业标准。The silage corn feed made by harvesting and fermentation has high nutritional value,which is the material basis for the sustainable development of China's animal husbandry.Aiming at the problems of poor shredding quality,winding and clogging of straw during the feeding process,and high energy consumption in silage corn harvester,a test bench with feeding and shredding device for silage corn harvester is designed with adjustable feeding height,reversible feeding roll and good shredding quality.The test bench designed can complete the working process of silage corn transportation,feeding,shredding and throwing.Statics and modal analyses are carried out on key parts of the test bench to verify its strength and reliability.Taking shredding length and pass rate of straw as the main performance reference indexes,the performance test of the test bench was carried out.The test results showed that when the feeding speed was 2.5 m/s and the rotation speed of the shredding drum was 1700 r/min,the average shredding length of straw was 15.6 mm,the pass rate was 96.1%,and the production efficiency was 15000 kg/h.All indicators are in line with national and industry standards.

关 键 词：青贮玉米 喂入装置 切碎装置 有限元法 模态分析 

分 类 号：S225.51[农业科学—农业机械化工程]