10噸位橋式起重機總體設計摘 要
經過十幾年的發展，我國工業化進程不斷推進，起重行業的需求進一步增大。橋式起重機是橋架型起重機中最主要的型式,它具有場地利用率高、作業范圍大、適應面廣、通用性強等特點。橋式起重機一般由橋架，起升機構和小車運行機構，大車運行機構，操縱室，小車導電裝置，起重機總電源導電裝置等組成。本設計采用10噸位電動雙梁橋式起重機進行研究。
全文分五部分內容來完成本次設計課題內容：
第一部分為緒論部分，簡要介紹了起重機械的作用、國內外起重機械的發展狀況及存在的問題、我國起重機械的發展方向。第二部分為總體結構布置的確定，該部分主要分析了起重機的工作特點，主要參數及組成部分包括起升機構、大小車機構的布置方案，輪壓的計算。第三部分為橋架結構的設計，該部分包括橋式起重機主要尺寸如大車輪距、主梁高度、端梁高度、加勁板的布置尺寸等和計算載荷，箱型結構主梁，主要焊縫的驗算。四部分為電氣部分的設計，該部分介紹了變頻調速的基本原理及發展現狀，橋式起重機的頻調速，起升機構的變頻調速，大小車的變頻調速及整體PLC設計。第五部分為結論及展望部分，對本設計進行分析總結，論證橋式起重機基本尺寸和電氣部分的可靠性，同時也指出其不足待改進之處。
關鍵詞：橋式起重機；起升機構；橋架結構；PLC
Abstract
After more than ten years of development, the industrialization of China has continuously promoted, and the crane industry demands further increase.Overhead travelling crane is the main type of overhead type crane and ithasthefollowingadvantages:highfieldutilization rate,greaterscopeofwork,widerangeadaption,gooduniversalityandsoon.Ingeneral,overheadtravellingcraneiscomposedofsranespanstructure,hoistingmechanism ,wheelingmechanism,travelling mechanism of the larger traveller ,control carbin,the car conductive device,the general supply conductive device of srane etc.This design uses the electric double girder overhead travelling crane research.The full text is divided into 5 parts to complete this design topic content:The first part is the preface.In this part,the effect of crane, the development of the situation and existing problems of lifting equipment at home and abroad,the development direction of China will be introduced.The second part is the determination of the overall layout of the structure.This part mainly analyzes the work characteristics and technical parameters of the crane.The constiturnt part of layout scheme include hoisting mechanism , wheeling mechanism,travelling mechanism of the larger traveller and calculation of wheel pressure will also be mentioned.This part include the third part is the design of the bridge structure.It includes the main dimensions of overhead travelling crane such as the wheelbase of cart,height of main beam,end beam heigt,layout size of the stiffened plate and so on. We willconsiderthecheckingofcalculating load,box structure beam and main weid.The fourth part is the design of electricalpart.The fundamentalanddevelopmentstatusoffrequencycontrolwillbetalkedabout.Overheadtravelling crane，hoistingmechanism，cart and trolley all need consider frequency control.There is a design ofglobal PLC. In the last part ,according to the conclusion,the paper has made analysis and summary to this design,giving the basic size and electrical part of Overhead travelling crane to be proved,pointing to the deficiencies and needing improvements of the argument.
Key words: Overhead travelling crane; ,hoisting mechanism; bridge structure; PLC ...
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