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ID:14441936
大小:218.00 KB
页数:14页
时间:2018-07-28
《多轴转向汽车前轮定位仪中英稿》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、多轴转向汽车的前轮定位FrontWheelalignmentsforcarwithmulti-steeringaxis在我国整个汽车行业普遍存在一个问题,即前轮(转向轮)早期磨损问题,一直困扰着我们。而归根结蒂,又都是归结为前束不准的问题。通过多年的研究和探索。我们在“汽车前束的由来与调整”一文中详细论述了有关汽车前束的各方面问题。由于影响汽车前束的因素非常多,前束既不能通过计算得来,也不能通过类比的方法得来。文中提出解决前轮磨损的唯一办法就是采用“力传感式动态车轮定位仪”将每辆车的前束调到最佳前
2、束值,方可彻底解决车轮磨损问题。此仪器在多家汽车制造厂的多条总装线上使用,实践证明是行之有效的。汽车前束由来主要有四:1、车轮外倾,2地面和空气阻力,3前桥结构的合理性与制造的精度。4车轮的结构和品质。对于前三者一般教科书均有论述,而对于第四者也是最主要因素,国内资料和教科书却只字未提,国内汽车设计者也普遍忽略了此问题。一般汽车特别是货车,都采用静态车轮定位仪或前束尺调整前束,或者在桥厂调整前束,这样调整出来的汽车前束值没有考虑到汽车各相关部件,特别是轮胎的制造误差对前束的影响。Thereisav
3、erycommonproblemthathasbeenhauntingtheChinesedomesticautoindustryisthefastweardownsofthefrontwheelstires.Thisproblemiscausedbytheinaccuratefrontwheelalignments.Thearticle“Therationaleandadjustmentsofautomobiles’frontwheeltoe-in”hasdiscussedingreatdeta
4、ilsonthemanychallengestoresolvethisproblembasedonmanyyearsofresearchanddevelopment.Duetothemanycomplicatedfactorsthataffectthefrontwheelalignments,agoodtoe-invaluecannotbereachedthroughsimplemathematicalcalculationsorcomparisonswithothercars.Thearticl
5、esuggeststhattheonlywaytocompletelyresolvethefronttireweardownproblemisutilizingthe“dynamicwheelalignmentwithresistancesensingtechniques”.Thistechnology,testedandapprovedbymultipleassemblylinesofmanyautomanufacturers,ensuresthebestalignmentvalueforeac
6、hindividualvehicle.Therearefourreasonsforautomobilestohavefrontwheeltoe-in:PositiveChambervaluesFractionsfromairandgroundsurfaceThedesignandmanufacturingaccuracyofthestructureofthefrontaxlesStructureandqualityoftiresMostoftheautomobilebooksgivegreatex
7、planationsonthefirstthreereasons.However,thefourthreason,whichisequallyimportant,hasn’tbeenexploredatallinmostoftheeducationalmaterialsandreferencesavailabledomestically.Moreover,mostofthedomesticautodesignershavegenerallyoverlookedthisissuealso.Ingen
8、eral,cars,especiallytrucks,usestaticwheelalignmenttoolsorrulerstoadjustthefrontwheeltoe-invalueswhenthevehicleisnotinmotion.Thisalsoincludesadjustmentsdoneinaxlesmanufacturers(桥厂).Allofthesewheelalignmentmethodsdon’tputintoconsiderationsofthee
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