试析饲草大截面草块压制的试验研究

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1、中国农业大学硕士学位论文饲草大截面草块压制的试验研究姓名：王峰申请学位级别：硕士专业：农业机械化工程指导教师：刘德旺20060501燕要该文首先对国内外饲草压块税燕的发展状况以及研究现状迸行了深入的研究，对饲草秸秆丈截丽胍块成形的机理进行了探讨，_i甑过力学分析研究了物料在压缩过程中的受力状况，得出了轴向琏成力沿成型槽方向的分布规镎和活塞压力的数学表达式。分析了活塞压力的组成，得出活塞压力楚垂袋鼙疆蠹藏等莘块熬摩擦醚力和袋型攒壅疆楚莩块疆力缀袋数。活塞嚣力与成型稽夹紧力璺线性关系，谎孵活塞压力随眷成型槽夹紧力的增加呈线性增加。对影响压缩过稷的参数包括物料参数如物料种类、含水率、喂入

2、量、草段长度和机械性能参数包括压缩压力、腿缩速度等进行了探讨，得出了相关参数对赋缩过程的影响规张。本文还对愿袋榉凝遴行了工程设诗诗算，荠对援缭过程孛静竣套帮{孛遴抒7受力分辑，遴簿了蟪关帮静静较桉。通过单因素试验和多因素正交试验研究了物料含水率、物料长度和成型槽夹紧力对大截面压块设备的影响规律及找出了各参数的最佳水平组台。本文为我国嚣溪大截蚕压块綦鞋ll理论方蠢鹣磷究骰了一些较溱入酶探索，势为镯摹稿耔羲综合平U用，推进畜牧业的发展和保护嫩态环境提出了一条可行的途径。研究成果赋有较大的经济效益和社会效益。关键词：饲草；穗释；大截珏；摄块；ABSTRACTThisthesishasst

3、udiedthepresentsituationandthedevelopmentoftheforagebalerinchinaandabroadandthenanalyzedthecompressingprocessandthestressduringthecompressingprocessthroughmechanics．Theregularitiesofdistributionofaxialstresswhichexerted011wafersinthedieandthemathematicalrepresentationofthepistoncompressionforc

4、eweregotten．Thepistoncompressionforceiscomposedofresistanceoffrictionbetweenforagebaleandinnerwallofthedieandtheresistanceoftheforagebaleattheoutletofthedie．Itpresentslinearrelationbetweenthepistoncompressionandclampforceofthedie，SOthepistoncompressingforceincreaseswiththeclampforceofIhedie．Th

5、eparametersofmaterialswhicheffectthecompressingprocesswerestudied，suchasthetypesofmaterial、moisturecontent、throughput、thelengthoftheforageandthecompressionspeed．Theregularitiesweregotten．Forthewafer,itsengineeringdesign、theanalysisofstressoftheequipmentsandthestrengthofmachinepartsWerechecked．

6、Thetestresultsshowthattheparametersofmaterialsuchaspercentmoisturecontentandthelengthandtheclampforceoftheformingducteffectthecompressingprocessofthebigsizeforagebalerandthecombinationofoptimumparameterswasgotten．Theformingprincipleoftheforagebalerofbigsizeinourcountryhadbeenstudiedthoroughly．

7、Afeasiblewayforthecomprehensiveutilizationofforagewasproposed，itwillimpellthedevelopmentofanimalhusbandryandprotectionofenvironment．Theresearchresultshavegreatereconomicalandsocialbenefits．Keywords：forage；straw；b蟾size；balerH独创性声明本人声明所呈交