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ID:14795903
大小:758.00 KB
页数:58页
时间:2018-07-30
《动力差速式转向机构设计毕业设计--119112161》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、本科学生毕业设计动力差速式转向机构设计TheGraduationDesignforBachelor'sDegreeDesignofDynamicDifferentialSteeringMechanismCandidate:ShiChuanyangSpecialty:MechanicalDesignandManufacture&AutomationClass:07-7Supervisor:AssociateProfessorChenShuhaiHeilongjiangInstituteofTechnology2011-06·Ha
2、rbin摘要履带车辆的转向机构是重要的总成之一,其性能的优劣直接影响着车辆的转向机动性和生产效率。因此对性能优良的转向机构的研究一直是车辆工程领域的重要研究课题。履带式工程机械的转向机构普遍采用单功率流的转向离合器和制动器,两者相配合,使两侧履带以不同速度行驶,实现转向。这种结构非常简单,同时也易于实现转向,但是要实现小半径转向时需借助摩擦元件的打滑来实现,造成严重的功率浪费,降低摩擦元件的使用寿命。同时驾驶操作费力,还不好准确把握车辆的转向半径。本设计为推土机设计采用的一套动力差速式转向装置。该转向机构主要包括一个转向差速机
3、构、一个液压泵、一个液压转向马达和转向控制器,它将转向和差速合为一体,简化了机械的结构,提高了机械的使用性能。该机构具有差速的同时,还具有差速锁的效果,并具有降速增扭的功能,大大提高了履带车辆行驶通过性和转向性能。关键词:差速式转向机构;转向离合器;转向半径;履带车辆;转向控制器ABSTRACTThesteeringmechanismoftrackedvehicleisoneimportantpartoftheunit,anditsperformancewilldirectlyaffectthemobilityandprodu
4、ctivityofthevehicle.Therefore,theresearchonsteeringmechanismisanimportantsubjectinthefieldofvehicleengineering.Themarchingprojectmachineryrotationgeargenerallyusesthesteeringclutchandthebrakewhichthesinglepowerflows,twocoordinateswhichcausetwosidescaterpillarbandswi
5、ththedifferentspeedtochangethedirection.Thiskindofstructureisextremelysimple,andwillbealsoeasytorealizechanges,however,ifyouwanttorealizethechangesofthesmallradius,youhavetodoitwiththeaidofrubpartsslippinganditwillcausetheseriouspowerwaste,reducestheservicelifeofrub
6、parts.Simultaneouslyitwillbeingreattroubletotaketheoperationandholdtheradialturningofvehicles.Thedesignisasetofdivertingdevicewithdifferencespeedwhichusesforthebulldozerdesign.Thesteeringmechanismmainlyincludesthedifferentialsteeringmechanism,ahydraulicpump,amotorof
7、hydraulicpressureandasteeringclutch.Itcanmakethechangingdirectionandthedifferencespeedintoonebody,simplifythemachinerystructure,enhancedthemachineryoperationalperformance.Thisstructurenotonlyhasdifferentspeed,butalsohastheeffectofdifferentiallock,andhasthefunctionwh
8、ichreducesspeedandincreasesturnsandenhancespassingnatureofthetrackedvehicleandtheperformanceofchangingdirection.Keywords:DifferentialSteer
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