767 QTZ40塔式起重機總體及臂架優(yōu)化設計（有cad圖）,767,QTZ40塔式起重機總體及臂架優(yōu)化設計（有cad圖）,qtz40,塔式起重機,總體,整體,優(yōu)化,設計,cad 摘要 本次設計在參照同類塔式起重機基礎上，對QTZ40型塔式起重機進行總體設計及吊臂的設計。在吊臂設計工程中，采用了有限元法對其進行分析計算，采用了ANSYS10.0軟件進行分析。 按照整機主要性能參數(shù)，確定各機構(gòu)類型及鋼結(jié)構(gòu)型式，主要確定了吊臂的結(jié)構(gòu)參數(shù)，并按照吊臂端部加載、跨中加載及根部加載三種工況分析。通過對吊臂作適當?shù)暮喕?，應用ANSYS10.0軟件建立吊臂有限元模型，施加各工況載荷，進行求解，進而可得各工況下各節(jié)點受力情況及各單元所受軸向力、軸向應力大小及各工況下吊臂的變形撓度大小，并能演示吊臂加載過程的動畫，清晰的展現(xiàn)了各工況下吊臂的受力性能。 通過修改模型參數(shù)，對不同模型進行分析比較。由比較不同模型在相同工況下的受力狀況及剛度狀況，綜合分析強度和剛度條件，可得出受力最為合理的一組模型參數(shù)，通過對此組參數(shù)下模型進行強度及剛度校核，進而獲得吊臂的最終參數(shù)結(jié)果。 關鍵詞：QTZ40型塔式起重機 吊臂 有限元分析 ANSYS10.0 Abstract Refers to the similar tower crane, this design is composed by the system design and the lazy arm design to the QTZ40 tower crane. In the lazy arm design progress, it has carried Finite Element method on the analysis computation, and used ANSYS10.0 software. According to the entire machine main performance parameter, various organizations type and the steel structure pattern has been determined. The design parameter of operating modes which are composed of nose increase, the cross center increase and the root increase. Through the suitable simplification to the lazy arm, the lazy arm finite element model is establishment applied ANSYS10.0 software, and then exerted various operating modes load, carried on the solution. Then ANSYS10.0 software can calculate various pitch points stress situation, various units receive the axial stress size, and the lazy arm distortion size under various operating modes. Also it can demonstrate the animation in the process of the lazy arm increase. It has clearly displayed the lazy arm stress performance under various operating modes. Through the revision for model parameter, the analysis comparison is carried on the different model. Because the stress condition and rigidity condition of different model is compared under the same operating mode, and the generalized analysis intensity and the rigidity condition is carried on, a most reasonable model parameter can be obtained, though the intensity and the rigidity examination regarding this model, then the final parameter result of the lazy arm can be obtained. Key words: QTZ40 tower crane Lazy arm Finite element analysis ANSYS10.0 目 錄 第1章 前言··········································································1 1.1 概述················································································1 1.2 發(fā)展趨勢·········································································1 第2章 總體設計····································································2 2.1 概述···········································································2 2.2 確定總體設計方案····························································2 2.3 總體設計原則·································································29 2.4 平衡臂與平衡重的計算······················································30 2.5 起重特性曲線·································································32 2.6 塔機風力計算·······························································33 2.7 整機的抗傾覆穩(wěn)定性計算·················································43 2.8 固定基礎穩(wěn)定性計算·······················································49 第3章 吊臂的設計計算························································50 3.1 分析單吊點與雙吊點的優(yōu)缺點·············································50 3.2 吊臂吊點位置選擇··························································51 3.3 吊臂結(jié)構(gòu)參數(shù)參數(shù)··························································52 3.4 有限元模型建立過程的幾點簡化··········································53 3.5 吊臂結(jié)構(gòu)的有限元分析計算················································54 3.6 計算結(jié)果分析································································69 3.7吊臂強度校核································································76 3.8 吊臂穩(wěn)定性校核·····························································76 畢業(yè)設計小結(jié)······································································87 致謝··················································································88 參考文獻············································································89