毕业设计（论文）-t桥式起重机小车运行机构设计.doc

摘 要 桥式起重机运行小车中最主要的结构有：电动机，减速器，联轴器，等等。 桥式起重机的小车设有起升机构和小车运行机构，为使小车轮压呈均匀分布， 应对小车的机构布置进行优化设计，以知小车轨迹和轴矩为例，以车轮轮压均匀分配为目标函数，按单钩起重小车的条件提出约束条件，对优化设计的结果进行分析如下： 首先，电动机—起重机械的驱动电动机要根据所需功率、最大转矩、接电持续率、起动等级、控制类型、速度变化范围、供点方式、保护等级、环境温度与使用地区海拔高度等因素进行选择。 其次，减速器—起重机械设计时，根据理论指导和工作经验，对机构形式、中心距、公称传动比及齿轮参数的选择应遵守原则和注意事项。 再次，联轴器—起升机构装有联轴器，其电动机工况驱动力矩，起升过程，减速传动装置的载荷等，与电动机通过减速器直接驱动的起重运行机构有差别，本文根据在MH葫芦桥式起重机系列设计中的应用的经验，提出了把联轴器传动与起重机机构设计相结合的设计计算方法，其设计计算结果在该系列试验中得到证实。 关键词：起重小车，电动机选择，减速器，联轴器 Abstract The most of structure of conuey uehicle,which of the crane of bridge is this :genertor、cushion、coupting. Trolley of overhead traveling crane comprises lifting and traversing mechanisms .Optimization method is applied to the layout design of mechanisms on trolley in order to maintain an even distribution of optimization design on an example a trolley with given wheel base and track gauge ,using even distribution of wheel loads as an objective funtion and condition of a signle hook lifting trolley as restrictive condition The driving motor an electric cane has to be selected according to the required power、maximum torque 、dutyfator 、startup frequency 、type of control 、range of speed rariation 、method of power supply 、class of protection 、ambient temperature and elevation oversee level at the vacation of use . Based on theoretical and practical experience ，this paper presents the principles and attentions for selecting and designing of the structure ,center distance ,nominal transmission ratio and gear parameters when designing the reducers for cranes . Crane traveling mechanism equipped with hydraulic coupling is quite different from ordinary one so far as the working condition of motor .Driving moment,starting process load applied to reducer etc ,Based upon the experience of application to the series of MH type gantry crane with electric hoist as lifting mechanism ,this paper gives calculation method ,which combines the design of hydraulic transmission with th