70t级铁路储油罐车焊接结构及工艺设计.docx

沈阳理工大学学士学位论文IV摘要随着中国成功地加入世界贸易组织(WTO)中国的经济取得了空前的高速发展。国家投资基础设施建设的力度越来越大各种物资的流通运输和周转量逐年增加经济发展对交通运输行业提出了更高的要求和挑战。铁道运输作为国民经济发展的大动脉货车运能远远不能满足物资运输的需求铁道运输“重载化”已成为现阶段铁路运输的重要课题。为提高运能适应国民经济发展的需要近年来铁道部实施了跨越式发展战略铁路货车向“重载化、快捷化”的方向发展出台了70t级货车的重载技术政策先后研制成功了70t级新型敞车、平车、棚车等重载货车为全面开行重载列车创造了条件。70t级新型轻、粘油罐车是按照铁路货车重载技术政策要求设计开发的轴重23t的重载罐车该车采用无中粱结构载重较G70和G17B型罐车提高8t和7t。为适应重载提高了车辆强度校核标准新型罐车对车辆结构的可靠性提出了更高的要求牵枕结构作为罐车车承上启下的关键部件传递着牵引和各项冲击载荷承载着各种垂向、横向载荷受力非常复杂该结构的可靠性直接关系到罐车整车的运行安全。本文通过对70t级新型无中梁罐车牵枕结构的设计、选型和开发思路作以论述探讨无中粱罐车牵栋结构的一般规律从而对一般无中梁罐车的设计和选型提供帮助。关键词：70t级；无中梁罐车；车枕结构；设计；分析AbstractWithChina'ssuccessfulaccessiontotheWorldTradeOrganization(WTO)China'seconomyhasachievedanunprecedentedhigh-speeddevelopment.Increasingtheintensityofthenationalinvestmentininfrastructureconstructiondistributionandtransportationofvariousmaterialsandtheturnoverincreasedyearbyyear.Economicdevelopmenthasputforthhigherdemandsandchallengesonthetransportationindustry.RailwayTransportasthemainarteryofthenationaleconomicdevelopmenttruckedfarcannotmeettheneedsofthetransportationofmaterialsandtheRailwayTransport"overload"hasbecomeanimportantissueofrailtransportatthepresentstage.InordertoimprovethetransportcapacitytomeettheneedsofnationaleconomicdevelopmenttheMinistryofRailwaysimplementedaleap-forwarddevelopmentstrategyinrecentyearswhichleadedthedevelopmentofrailwaywagonstothe"overloadedtime-saved"ofthedirection.Ithasbroughtouttheoverloadedtechnologypolicyfor70tclasstruckincludinga70tclassofnewgondolacarflatcarboxcarandotherheavygoodsvehiclesandhascreatetheconditionsforthefullopeninglineofheavyhaultrain.70tclassofnewlightstickyoiltankerisanoverloadedtankers(axleload23t)astubsilltangkcarwhichisdesignedanddevelopedwithaccordancetotherequirementofrailwaywagonsoverloadedtechnologypolicyitsloadingcapasityisincrease