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ID:29064351
大小:7.73 MB
页数:137页
时间:2018-12-16
《铁路储油罐车焊接结构及工艺设计》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、沈阳理工大学学士学位论文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,
2、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
3、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132沈阳理工大学学士学位论文AbstractWithChina'ssuccessfulaccessiontotheWorldTradeOrganization(WTO),China'seconomyhasachievedanunprecedentedhigh-speeddevelopment.Increasingtheintensityofthenationalinvestmentininfrastructureconstruction,distributionand
4、transportationofvariousmaterialsandtheturnoverincreasedyearbyyear.Economicdevelopmenthasputforthhigherdemandsandchallengesonthetransportationindustry.RailwayTransportasthemainarteryofthenationaleconomicdevelopment,,truckedfarcannotmeettheneedsofthetransportationofmateri
5、als,andtheRailwayTransport"overload"hasbecomeanimportantissueofrailtransportatthepresentstage.Inordertoimprovethetransportcapacitytomeettheneedsofnationaleconomicdevelopment,theMinistryofRailwaysimplementedaleap-forwarddevelopmentstrategyinrecentyearswhichleadedthedevel
6、opmentofrailwaywagonstothe"overloaded,time-saved"ofthedirection.Ithasbroughtouttheoverloadedtechnologypolicyfor70tclasstruckincludinga70tclassofnewgondolacar,flatcar,boxcarandotherheavygoodsvehicles,andhascreatetheconditionsforthefullopeninglineofheavyhaultrain.70tclass
7、ofnewlight,stickyoiltankerisanoverloadedtankers(axleload23t),astubsilltangkcar,whichisdesignedanddevelopedwithaccordancetotherequirementofrailwaywagonsoverloadedtechnologypolicy,itsloadingcapasityisincreasedby8tand7tcomparedwiththeG70andG17B-typetanker.Toadapttooverload
8、ing,vehiclestrengthcheckstandardsareincreased.Thenewtypeoftankerclaimsmorereliabilityofthevehiclestructureinwh
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