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1、. . . 本科毕业设计题目：32/5t通用桥式起重机小车设计 . . . 本文主要介绍了桥式起重机的整体设计理论和设计过程，其中重点设计了桥式起重机的运行机构起升机构等，主要包括桥式起重机小车运行机构的整体设计及传动机构的布置，小车运行机构计算。还有轴承的选择、联轴器的选择、电动机的选择、减速器的选择和校核。桥式起重机是桥架型起重机的一种，它依靠起升机构和在水平面的两个相互垂直方向移动的运行机构，能在矩形场地及其上空作业，是工矿企业广泛使用的一种起重运输机械。它具有承载能力大，工作可靠性高，制造工艺相对简单等优点。起升机构包括电动机、制动器、减速器、卷筒和滑轮组。电动机通过减速器，带动卷筒转
2、动，使钢丝绳绕上卷筒或从卷筒放下，以升降重物。小车架是支托和安装起升机构和小车运行机构等部件的机架，通常为焊接结构。起重机运行机构的驱动方式可分为两大类：一类为集中驱动，即用一台电动机带动长传动轴驱动两边的主动车轮；另一类为分别驱动、即两边的主动车轮各用一台电动机驱动。中、小型桥式起重机较多采用制动器、减速器和电动机组合成一体的“三合一”驱动方式，大起重量的普通桥式起重机为便于安装和调整，驱动装置常采用万向联轴器。关键词：桥式起重机；起升机构；运行机构；起重运输机械。 Abstract This article mainly introduced the entire design theor
3、y and design process of bridge.type hoist crane，which focused on the design of the bridge crane operation of institutions and hoisting mechanismThe overall design that mainly includes the bridge type derrick small car to circulate organization and spread the decoration that the motive reaches, the s
4、mall car circulates an organization calculation.Still have the choice of the choice, electric motor of the choice, allied stalk machine of bearings, decelerate machine of choice and pit in the school. The bridge crane is a bridge.type crane, it relies on the lifting mechanism and in the horizontal p
5、lane, two mutually perpendicular direction of the run institutions, in the rectangular space over the job, the industrial and mining enterprises widely used as a starting heavy transport machinery. It has a large carrying capacity, high reliability, work, and manufacturing process is relatively simp
6、le. .Lifting bodies, including the motor, brake, reducer, drum and pulley. Reducer, the motor driven reel rotation, so that the wire rope wound on a reel or roll down, lifting heavy objects. The small frame rack, support care and installation from the winch and trolley run institutions, and other pa
7、rts usually welded structures. . Cranes run the drive can be divided into two categories: a centralized drive, which uses an electric motor to drive the long drive shaft drive on both sides of Active Wheel; other as, respectively, driven both sides of the active wheels each with a motor drives. Smal
8、l bridge crane in more frequent use of brakes, gear units and motors combined into one triple play drive mode, the big since the weight of ordinary bridge crane is easy to install and adjust the drive often universal coupling Keyword:Bridge type derrick; Hoisting mechanism; Run institutions ;Hoistin
9、g and conveying machinery. 目 录设计任务书.1概述.11 主起升机构的计算.31.1 确定传动方案，选择滑轮组和吊钩组.31.2 选择钢丝绳.31.3 确定卷筒尺寸并验算强度.31.4 初选电动机.51.5 选用标准减速器.61.6 校核减速器输出轴强度.61.7 电动机过载验算和发热验算.61.8 选择制动器.71.9 选择联轴器.81.10 验算起动时间.81.11 验算制动时间.91.12 高速轴计算.9 1.12.1疲劳计算9 1.12.2验算轴所受的最大转矩102 副起升机构计算.112.1 确定传动方案，选择滑轮组、钢丝绳和吊.112.2 确定卷筒尺寸、
10、转速并验算强度.122.3选择电动机并验算过载和发热情况.132.4 选择减速器.152.5 选择制动器.162.6 选择联轴器.162.7 验算启动时间.162.8 验算制动时间.172.9 高速浮动轴的设计计算.17 2.9.1疲劳计算.17 2.9.2验算轴所受的最大转矩.183 小车运行机构的设计与计算.193.1 确定机构传动方案.193.2小车运行机构的计算20 3.2.1选择车轮与轨道并验算其强度.20 3.2.2 选择电动机和减速器.22 3.2.3 验算空载和满载时的启、制动时间及不打滑条件.23 3.2.4 选择制动器和联轴器.253.3 浮动轴的设计和校核.27 3.3.1 疲劳计算.
