100/25tA7通用桥式起重机设计（L=19m）摘要起重机的出现大大提高了人们的劳动效率，以前需要许多人花长时间才能搬动的大型物件现在用起重机就能轻易达到效果，尤其是在小范围的搬动过程中起重机的作用是相当明显的。在工厂的厂房内搬运大型零件或重型装置桥式起重是不可获缺的。桥式起重机小车主要包括起升机构、小车架、小车运行机构、吊具等部分。其中的小车运行机构主要由减速器、主动轮组、从动轮组、传动轴和一些连接件组成。此次设计的桥式起重机是水电站桥式起重机，安装于丰满水电站扩建工程厂房内，用于水轮发电机组及其附属设备的安装和检修工作。水电站内设备一般都是大中型设备，对桥式起重机的载荷要求较高，所以对减速器性能要求较高。关键词：桥式起重机；小车运行机构；减速器DesignofthebridgetypehoistcraneCarmovementorganizationABSTRACTTheinventionofcranehasgreatlyincreasedpeople’sworkefficiency.Peoplecanusecranetohandlewithhugearticles,whichusedtobetakenalongtimetodo,especiallyinasmallarea.Thebridgetypehoistcraneisrequiredtohandlewithhugeaccessoryorhugedevice.Thebridgetypehoistcranecarconsistsofpromotedorganization,thecarframe，thecarmovementorganization,hoistingmechanismsandsoon.Itsoperationstructureiscomposedofreducer,thedrivingwheelgroup,thedrivenwheelgroup,thetransmissionshaftandsomeconnectfitting.Thecoreofthisstructureisthedesignofthereducer.Thisbridgetypehoistcraneisbeusedtothehydroelectricpowerstation.ItisinstalledintheexpandedworkshopofFengmanwaterandelectricitystation.Itisusedtoinstalling,examiningandrepairingthewater-turbinegeneratorsetanditsaccessorialequipments.theequipmentsinthewaterandelectricitystationarelargeormedium-size.Theseequipmentshaveahighrequestontheloadofbridgetypehoistcrane,sotheyalsohaveahighrequestonthecapabilityofthereducer.Keywords:bridgetypehoist,thereducerTOC\*MERGEFORMAT摘要PAGEREF_Toc30888IABSTRACTPAGEREF_Toc15750II1起重机小车设计........................................................................................................11.1小车主起升机构计算PAGEREF_Toc2318011.1.1确定起升机构传动方案，选择滑轮组和吊钩组PAGEREF_Toc1652311.1.2选择钢丝绳PAGEREF_Toc602511.1.3确定滑轮主要尺寸PAGEREF_Toc3048321.1.4确定卷筒尺寸，并验算强度PAGEREF_Toc2779821.1.5选电动机PAGEREF_Toc1909541.1.6验算电动机发热条件PAGEREF_Toc1744751.1.7选择减速器PAGEREF_Toc2846551.1.8验算起升速度和实际所需功率PAGEREF_Toc2856251.1.9校核减速器输出轴强度PAGEREF_Toc2044561.1.10选择制动器PAGEREF_Toc637271.1.11选择联轴器PAGEREF_Toc551671.