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。AbstractThevibrationisonekindoftheinertialoscillationmachinery,belongstointhevibrationusemachinerytheplanedoubleshafttypedriver.Thevibrationusesfrictiontoreducetheforcebetweenthemechanicalvibrationspileandthesoil,anddependsuponittobeself-possessedorthesur-pressurefunctionissuesthegoal.Thevibrationdividesthemechanicaltypeandthehydraulicpressuretypetwokinds,thehydraulicpressurevibrationhammerapplicationareless.Thevibrationusesthemechanicaltypedirectiondetectiondriver.Itisloadedwithsameandtheoppositedirectionrotationaxisbytwoiscomposed,ontwoaxesproducesthecentrifugalforceoffsetsorcounteractoneanotherinthehorizontalsideupwardforcecomponent,butinverticaldirectionforcecomponentsuperimposition.Thevibrationmainlybytheelectricmotor,theguiderod,thecompressionspring,horizontalbeamreducinginspires,vibration,thebeltpulleyandsooniscomposed.Hasthepenetratingpowerstrongly,thequalityofstakesinkingisgood,firmdurable,thebreakdownfew,thestructureiscompact,thelownoise,thehighefficiency,doesnothavemeritandsoonpollution.Keywords:VibratesthemachineryVibratorypilehammertheinertialoscillationthespringreducinginspires目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc139190672"摘要PAGEREF_Toc139190672\hIHYPERLINK\l"_Toc139190673"AbstractPAGEREF_Toc139190673\hIIHYPERLINK\l"_Toc139190674"第1章绪论PAGEREF_Toc139190674\h1HYPERLINK\l"_Toc139190675"第2章振动机械的用途、分类、工作原理及构造PAGEREF_Toc139190675\h2HYPERLINK\l"_Toc139190676"振动机械的用途和分类PAGEREF_Toc139190676\h2HYPERLINK\l"_Toc139190677"2.1.1振动机械的组成PAGEREF_Toc139190677\h2HYPERLINK\l"_Toc139190678"振动机械的用途PAGEREF_Toc139190678\h3HYPERLINK\l"_Toc139190679"2.1.3振动机械的分类PAGEREF_Toc139190679\h4HYPERLINK\l"_Toc139190680"惯性振动机械的工作原理与构造PAGEREF_Toc139190680\h5HYPERLINK\l"_Toc139190681"2.2.1惯性激振器的形式