125t通用橋式起重機(jī)設(shè)計(jì)（結(jié)構(gòu)部分）畢業(yè)設(shè)計(jì)

目 錄
摘要............................................. III               
前言............................................1
第一章  橋式起重機(jī)金屬結(jié)構(gòu)設(shè)計(jì)參數(shù) ....  2
第二章 .總體設(shè)計(jì) 3
   2.1 大車軸距 3
   2.2 主梁尺寸 3
第三章  主端梁截面積幾何性質(zhì) 4
第四章、載荷 5
   4.1 固定載荷 5
   4.2 小車輪壓 5
   4.3 動(dòng)力效應(yīng)系數(shù) 6
   4.4  慣性載荷 6
   4.5  偏斜運(yùn)行側(cè)向力 6
   4.6  扭轉(zhuǎn)載荷 8
第五章 主梁計(jì)算 9
   5.1  內(nèi)力 11
   5.2  強(qiáng)度 14
   5.3  主梁疲勞強(qiáng)度 16
   5.4  主梁穩(wěn)定性 18
第六章、 端梁計(jì)算 25
   6.1  載荷與內(nèi)力 26
   6.2  水平載荷 27
   6.3  疲勞強(qiáng)度 31
   6.4  穩(wěn)定性 34
   6.5  端梁拼接 35
第七章 、主梁和端梁的連接 39
第八章 、剛度計(jì)算 40
   8.1  橋架的垂直靜剛度 40
   8.2  橋架的水平慣性位移 41
   8.3  垂直動(dòng)剛度 41
   8.4  水平動(dòng)剛度 42
第九章、橋架拱度 43
  總結(jié) 45
  參考文獻(xiàn) 46
  致     謝 47
  英文資料 48

 
摘要
本設(shè)計(jì)采用許用應(yīng)力法以及計(jì)算機(jī)輔助設(shè)計(jì)方法對(duì)橋式起重機(jī)橋架金屬結(jié)構(gòu)進(jìn)行設(shè)計(jì)。設(shè)計(jì)過(guò)程先用估計(jì)的橋式起重機(jī)各結(jié)構(gòu)尺寸數(shù)據(jù)對(duì)起重機(jī)的強(qiáng)度、疲勞強(qiáng)度、穩(wěn)定性、剛度進(jìn)行粗略的校核計(jì)算，待以上因素都達(dá)到材料的許用要求后，畫(huà)出橋架結(jié)構(gòu)圖。然后計(jì)算出主梁和端梁的自重載荷，再用此載荷進(jìn)行橋架強(qiáng)度和剛度的精確校核計(jì)算。若未通過(guò)，再重復(fù)上述步驟，直到通過(guò)。由于橋架的初校是在草稿中列出，在設(shè)計(jì)說(shuō)明書(shū)中不予記錄，僅記載橋架的精校過(guò)程。設(shè)計(jì)中參考了各種資料,運(yùn)用各種途徑,努力利用各種條件來(lái)完成此次設(shè)計(jì).本設(shè)計(jì)通過(guò)反復(fù)斟酌各種設(shè)計(jì)方案,認(rèn)真討論,不斷反復(fù)校核,力求設(shè)計(jì)合理;通過(guò)采取計(jì)算機(jī)輔助設(shè)計(jì)方法以及參考前人的先進(jìn)經(jīng)驗(yàn),力求有所創(chuàng)新;通過(guò)計(jì)算機(jī)輔助設(shè)計(jì)方法,繪圖和設(shè)計(jì)計(jì)算都充分發(fā)揮計(jì)算機(jī)的強(qiáng)大輔助功能,力求設(shè)計(jì)高效。

關(guān)鍵詞:橋式起重機(jī),校核,許用應(yīng)力
 
Metal Framework Of Bridge Crane(10t 25.5m) Design

Abstract
The project designs metal framework of bridge crane in use of allowable stress method and CAD. At first ,I chose size assumably.Then, proofreaded the size.If the proof was not passed,must choose the size again up to pass the proof.If the proof was passed,it could carry on the specific structural design.At last,it’s plot and clean up the calculation process. Designed to make reference to the various of data in the process, make use of various paths, work hard to make use of the various of condition to complete this design in reason. I considered various design projects, discussed earnestly,calculated time after time, try hard for a  reasonable design;via CAD and make reference advanced experiences,try hard for a  innovatory design;via CAD,ploting and calculation can make good use of powerfull computer,try hard for a high efficiency design.I knew the various of design methods,newest machine design methods both here and abroad also found various of good data.
Key Words:bridge crane,proofread,allowable stress