DZ60振动打桩锤的设计毕业论文.doc -- 8 元

I摘要振动桩锤是惯性振动机械的一种，属于振动利用机械中的平面双轴式激振器。振动桩锤是利用机械振动减少桩与土壤间的摩擦力，并依靠其自重或外加压力作用下达到沉桩的目的。振动桩锤分机械式和液压式两类，液压振动锤应用较少。振动桩锤采用机械式定向激振器。它由两根装有相同的偏心块并相向转动的轴组成，两根轴上的偏心块所产生的离心力在水平方向上的分力相互抵消，而垂直方向上的分力叠加。振动桩锤主要由电动机、导杆、压缩弹簧、减振粱、振动箱、皮带轮等组成。具有贯入力强、沉桩质量好、坚固耐用、故障少、结构紧凑、低噪音、高效率、无污染等优点。关键词振动机械、振动桩锤、惯性振动、减振弹簧IIAbstractThevibrationhammerisonekindoftheinertialoscillationmachinery,belongstointhevibrationusemachinerytheplanedoubleshafttypedriver.Thevibrationhammerusesfrictiontoreducetheforcebetweenthemechanicalvibrationspileandthesoil,anddependsuponittobeselfpossessedorthesurpressurefunctionissuesthegoalofstakesinking.Thevibrationhammerdividesthemechanicaltypeandthehydraulicpressuretypetwokinds,thehydraulicpressurevibrationhammerapplicationareless.Thevibrationhammerusesthemechanicaltypedirectiondetectiondriver.Itisloadedwithsamelackofimpartialitythepieceandtheoppositedirectionrotationaxisbytwoiscomposed,ontwoaxeslackofimpartialitythepieceproducesthecentrifugalforceoffsetsorcounteractoneanotherinthehorizontalsideupwardforcecomponent,butinverticaldirectionforcecomponentsuperimposition.Thevibrationhammermainlybytheelectricmotor,theguiderod,thecompressionspring,horizontalbeamreducinginspires,avibrationboxofbody,thebeltpulleyandsooniscomposed.Hasthepenetratingpowerstrongly,thequalityofstakesinkingisgood,firmdurable,thebreakdownfew,thestructureiscompact,thelownoise,thehighefficiency,doesnothavemeritandsoonpollution.KeywordsVibratesthemachineryVibratorypilehammertheinertialoscillationthespringreducinginspiresIII目录摘要................................................IABSTRACT............................................II第1章绪论...........................................1第2章振动机械的用途、分类、工作原理及构造...........22.1振动机械的用途和分类........................................22.1.1振动机械的组成.........................................22.1.2振动机械的用途..........................................32.1.3振动机械的分类..........................................42.2惯性振动机械的工作原理与构造................................52.2.1惯性激振器的形式.......................................52.2.3线性或近似线性的近共振类惯性机械.......................122.2.4非线性惯性振动机械.....................................132.2.5冲击式惯性振动机械.....................................142.3桩工机械的分类和工程应用...................................142.3.1桩工机械的分类.........................................152.3.2桩工机械在工程技术中的应用.............................152.4振动桩锤的工作原理和构成...................................152.4.1振动桩锤的工作原理.....................................152.4.2振动桩锤的构成.........................................172.4.3沉桩原理...............................................18第3章电机的选择和计算...............................20IV3.1选择电动机应综合考虑的问题.................................203.2选择电动机.................................................20第4章振动桩锤的主参数计算...........................224.1激振力的计算...............................................224.2计算实际振幅...............................................234.2.1根据提供的频率选择工作土壤的类型.......................234.2.2振幅A的确定...........................................234.3计算实际偏心力矩...........................................244.4功率的计算.................................................25第5章减振弹簧的设计与计算...........................275.1减振弹簧的结构选择.........................................275.1.1选取螺旋弹簧的类型代号.................................275.1.2选取弹簧的材料并确定其主要性能参数.....................275.2圆柱螺旋弹簧的设计计算.....................................275.2.1确定单根弹簧的最大工作载荷.............................275.2.2选择旋绕比.............................................285.2.3计算钢丝直径...........................................285.2.4计算弹簧中径...........................................285.2.5计算弹簧圈数...........................................295.2.6计算试验载荷...........................................305.2.7自由高度...............................................305.2.8弹簧的节距.............................................315.2.9弹簧的螺旋角...........................................315.2.10弹簧的稳定性验算......................................325.2.11弹簧的强度验算........................................325.2.12共振验算..............................................33第6章V带传动的设计计算.............................35