哈尔滨理工大学工学硕士学位论文学士学位论文-PAGEII--PAGEXXII-液压起重机变幅系统设计摘要随着经济建设的飞速发展，我国的基础建设力度正逐渐加大。道路交通、机场、港口、水利水电、市政建设等基础设施的建设规模也越来越大。市场上液压起重机的需求也随之增加。液压起重机是各种工程建设广泛运用的重要起重设备。它是用来对物料进行起重、运输、装卸或安装等作业的机械设备。作为主要施工机械在工业和民用建筑中得到广泛运用。它对减轻劳动强度、节省人力、降低建设成本、提高施工质量、加快建设速度、实现工程施工机械化起着十分重要的作用。本设计的主要任务是查阅相关的资料和文献，确定起重机变幅系统的方案以及变幅机构三铰点的位置。根据已知数据，对起重机的变幅液压缸进行设计和计算。根据计算的数据画CAD图纸。最后对变幅系统的其他主要元件进行选取。变幅系统中变幅液压缸的设计和计算是整个系统设计的重点。变幅液压缸的设计与计算主要参照《新编液压工程手册》和《机械设计手册》中的公式。关键词液压起重机；变幅机构；变幅液压缸HydrauliccraneluffingsystemdesignAbstractWiththerapideconomicdevelopment,China'sinfrastructureisenlarginggradually.Roadtraffic,airport,port,waterconservancyandhydropower,municipalconstructionandotherinfrastructureconstructionscaleismoreandmore.Marketdemandincreaseshydrauliccrane.Hydrauliccraneisanimportanthoistingequipmentwidelyusedinvariousengineeringconstruction.Itisusedforlifting,transportation,loadingandunloadingandinstallationworkonmaterialmechanicalequipment.Asthemainconstructionmachineryintheindustrialandcivilconstructionhasbeenwidelyused.Itistoreducelaborintensity,savemanpower,reducethecostofconstruction,improveconstructionquality,speeduptheconstruction,engineeringconstructionmechanizationplaysaveryimportantrole.Thedesignofthemaintasksistoaccessrelevantinformationanddocuments,todeterminethethreehingeluffingsystemofcraneluffingmechanismschemeandtheposition.Accordingtoknowndata,luffinghydrauliccylindertothecranedesignandcalculation.AccordingtodrawingsandCADdatadrawingcalculation.Finally,othermajorcomponentsoftheluffingsystemselection.Designandcalculationofamplitudehydrauliccylinderluffingsystemistheemphasisofthewholesystemdesign.Designandcalculationofamplitudehydrauliccylinderisthemainreference"NewHydraulicEngineeringHandbook"and"MechanicalDesignManual"intheformula.Keywords:Hydrauliccrane；Luffingmechanism；Luffingcylinder目录摘要=1\*ROMANIAbstract=2\*ROMANIITOC\o"1-3"\h\z\uHYPERLINK\l"_Toc359321258"第1章绪论PAGEREF_Toc359321258\h1HYPERLINK\l"_Toc359321259"1.1课题研究