橡胶弹簧构造_功能（PPT30页)

MarshMellowIntroduction,ConstructionandFunction橡胶弹簧介绍、构造以及功能FIRESTONEINDUSTRIALPRODUCTSCOMPANYWhatisaMarshMellow®?橡胶弹簧是什么？Rubbercylinder橡胶柱Fabricreinforced纤维加固CompressionSpring压缩弹簧VibrationIsolator隔振器Description描述FIRESTONEINDUSTRIALPRODUCTSCOMPANYDevelopedin1973开发于1973年Lookingfora“spring”withsimilarcharacteristicstoanairspring,butwithoutrequiringair需求是：性能类似于空气弹簧但是不需要压缩空气WhythenameMarshMellow?为什么叫MarshMellowDevelopedbyFirestoneengineer,JerryMarsh开发者是凡士通工程师，JerryMarshHistory历史FIRESTONEINDUSTRIALPRODUCTSCOMPANYUniqueelementsofdesignflexibility特殊的组成Solidrubbercorematerial实心橡胶芯Hollowcenter中空中心Endconfiguration端面形状可选Fabricreinforcedplies纤维增强层Construction构造ReviewSampleFIRESTONEINDUSTRIALPRODUCTSCOMPANYApplicationdependent基于应用VibrationIsolationCompound(allcatalogpartsarethishighefficiencycompound)隔振器配方（手册中所有产品都是这种高效的配方）Highefficiency高效Provideslittledamping仅提供很小的阻尼ShockAbsorptionCompound冲击吸收配方Higherdamping高阻尼Reduces“springback”effect降低回弹效应SolidRubberCoreMaterial实心橡胶材质Construction构造FIRESTONEINDUSTRIALPRODUCTSCOMPANYVariableofLoadCapacity可提供不同的载荷能力Affectscontactarea影响接触面积SmallerIDcarrieslargerload中心直径越小，载荷能力越强Aidsininstallation安装指南“Installation”p.24–26inCatalog产品样本第24-26页Mountingpins安装销Centerrod中心杆Cable张紧带Construction构造HollowCenter中空中心FIRESTONEINDUSTRIALPRODUCTSCOMPANYMountingMethod安装方法ApinneedstobesuppliedbythecustomerontheirmountingplatetofitintothehollowcenteroftheMarshMellow.Thedetailsaresuppliedoneachdatapageofthecatalog.客户需要在安装板上提供一个销子，插入到橡胶弹簧的中心孔，详细信息请见数据样本。AlsotheplateneedstobeatleastaslargeindiameterasthemaximumdiameteroftheMarshMellow.安装板直径不得小于橡胶弹簧的最大直径。FIRESTONEINDUSTRIALPRODUCTSCOMPANYMountingMethod安装方法Example:W223580176FIRESTONEINDUSTRIALPRODUCTSCOMPANYNotaperisthestandard标准形式是非锥面形状的。Taperadvantages锥面形状端面的优势Softeratlowcompression低压缩时更软Reducedstressinarcmotions弧形运动时可以降低应力Improvedfabricperformancefortall,thinparts用于又高又长的产品时，可以提高纤维层的性能Construction构造EndConfiguration端面形状选择FIRESTONEINDUSTRIALPRODUCTSCOMPANYHightensiletirecordfabric高强度轮胎纤维Angledpliesprovide层与层之间纤维成角度排列Consistentcylindricalshape（被压缩时）保持圆柱形状Loadcurveprofile载荷曲线Stability稳定性Similartoanairspring与空气弹簧相似FabricConstruction纤维层结构Construction构造FIRESTONEINDUSTRIALPRODUCTSCOMPANYAirSpring空气弹簧MarshMellow橡胶弹簧SimilarconcepttoanAirSpring与空气弹簧理念相似Construction构造MarshMellowOperation橡胶弹簧应用FIRESTONEINDUSTRIALPRODUCTSCOMPANYWhenrubberisdeformed,itflowstothepathofleastresistancelikeafluid.像流体一样，橡胶被压缩时会遵循最小阻力原则。Itformsaspherewithflatends.那样会形成一个两端是平面的球形Theloadiscarriedlikeacylinder,pressuretimesarea载荷能力计算类似气缸，压力乘以面积However,theareaisonlythesizeofthecontactareaoftherubberandmetalends然而，面积只是橡胶与金属件的接触面积PerformanceCharacteristics性能FIRESTONEINDUSTRIALPRODUCTSCOMPANYAstheheightdecreasesinaMarshMellow,thecordspantograph,increasingdiameteratthesamevolumetricrate.橡胶弹簧被压缩时，纤维平行移动，使得其直径相应增长，但容积不变。Internalpressureisappliedovertheentirevolumesincethecontactareaincreasesaswell由于接触面积随之增大，内部压强会作用于整个橡胶弹簧。PerformanceCharacteristics性能FIRESTONEINDUSTRIALPRODUCTSCOMPANYMarshMellows®maintainacylindricalshape橡胶弹簧保持圆柱形状PerformanceCharacteristics特性FIRESTONEINDUSTRIALPRODUCTSCOMPANYNoLoad(0kg)零载荷Height=57cm高度PerformanceCharacteristics特性FIRESTONEINDUSTRIALPRODUCTSCOMPANY22,5tons载荷Height=38cm高度PerformanceCharacteristics特性FIRESTONEINDUSTRIALPRODUCTSCOMPANY45tonsHeight=33cmLoadincreasesby100%Deflectionincreasesby13%PerformanceCharacteristicsFIRESTONEINDUSTRIALPRODUCTSCOMPANY04008001200160020002400280012345678910Load(lb)Displacement(in)Linearvs.VariableSpringRatePerformanceCharacteristics特性Precautions&Advantages注意事项以及优势FIRESTONEINDUSTRIALPRODUCTSCOMPANYChemicalResistanceChart化学物质耐受性FormoreinformationyoucanlogintotheDuPontwebsiteforamuchmoreextensivelist.更多信息，请登录杜邦公司网站：潜在破坏•Ifthepindiameteristoolargeitcancausetearingoftherubbercore.如果安装销直径过大，有可能切坏橡胶芯•IfthepindiameteristoosmallitcanallowtheparttoshiftsidewaysanddamagetheID如果安装销直径过小，有可能导致橡胶弹簧水平移动，从而导致内壁损坏•IfthepinistoolongitwillgougetheIDofthepartwhencompressedduringlateralvibrations.如果安装销过长，它可能啃坏橡胶弹簧内孔壁•Ifthepinistooshortthepartcanjumpoffduringoperationanddamagetheendofthecore如果安装销过短，运行过程中，橡胶弹簧可能跳出销子，从而导致端面损坏•ThemountingplatediameterneedstobelargerthanthelargestdiameteroftheMarshMellowunderfullcompression安装板的直径需要大于橡胶弹簧的最大压缩时的最大直径。FIRESTONEINDUSTRIALPRODUCTSCOMPANYWorkingcompression15to27.5%-Why?压缩率15-27.5%，为什么？Needminimumcompressionof15%toinsurethatthemachinewillnotbounceoffofthemountingpinsduringstartuporshutdown.最低压缩率15%以保证安装销在启动、停机过程中不至于跳出橡胶弹簧。Also,minimumof15%inordertogetintoabetterisolationrangeduetonaturalfrequency15%的最低压缩率还保证了较好的隔振率Maximumof27.5%inordertokeeprubbertemperatureundercontrolinnormalworkingconditions最高压缩率27.5%确保正常运行过程中橡胶弹簧的温度不至于超高Maximum40%deflection–Why?最大变形40%Althoughyoushouldnotoperatethepartdynamicallyatabove27.5%deflection,itcantakeimpactloadsupto40%虽然不应使橡胶弹簧的动态压缩率超过27.5%，但是橡胶弹簧可以承受40%压缩率的冲击。Above40%compressiontherubbercanfractureandthefabricplysfail超过40%的压缩率时，橡胶可能会破裂，纤维层可能会失效。LoadRange载荷范围FIRES