本文關鍵詞：多功能高空作業(yè)平臺設計及關鍵機構動態(tài)特性分析　出處：《江蘇科技大學》2012年碩士論文　論文類型：學位論文

  更多相關文章： 高空作業(yè)平臺 起重機 結構設計 有限元分析 優(yōu)化 動態(tài)分析

【摘要】：高空作業(yè)平臺是高空維修的主要設備之一，能將工作人員和相關設備運送到指定高度進行作業(yè)，具有操作簡單、安全可靠等功能，廣泛應用于城市電力、建筑等領域。由于變電站現(xiàn)場維修環(huán)境的特殊性，現(xiàn)有的設備并不能完全滿足現(xiàn)場維修的需要，急需一種新型設備來克服現(xiàn)有設備的缺陷。本文針對以上問題，以檢修變電站某種類型的互感器為對象，對現(xiàn)有的高空作業(yè)平臺進行深入的研究，研制一種集高空作業(yè)平臺和起重機于一體的多功能高空作業(yè)平臺，在分析整體方案的基礎上，針對起重機的受力特點，建立了承載多種載荷工況的幾何模型，進行了有限元分析和優(yōu)化，并對關鍵機構進行動態(tài)特性的研究，為新產品的開發(fā)提供了一定的指導。 論文主要研究了以下內容： (1)針對變電站工作現(xiàn)場的特點，提出了多功能高空作業(yè)平臺的設計參數(shù)，在分析多種方案的基礎上，選出了一種最佳方案——多節(jié)伸縮臂滑動式升降機構，體積小、輕巧方便，同時具有高空檢修、吊裝、梯子和重物搬運等功能，然后對起吊機構、變幅機構、旋轉機構和伸縮臂機構進行詳細的結構設計，從而確定了整體結構模型。 (2)應用Hypermesh軟件對整機的三維模型進行網格劃分，在此基礎上運用ABAQUS軟件進行有限元分析，得到了兩種工況下各構件的應力和位移分布規(guī)律，，并根據(jù)分析結果對應力集中處進行結構改進。 (3)根據(jù)改進后的分析結果，各處應力集中都相應的減小，但伸縮臂受力仍不均勻，應用OPTISTRUCT軟件進行離散尺寸優(yōu)化，使整機的重量和體積都相應減小，各構件受力均勻，獲得了較為理想的結構。 (4)運用動力學仿真軟件ADAMS對多功能高空作業(yè)平臺進行了動態(tài)分析，生成一系列執(zhí)行機構的動力學特性曲線，為設備的工作性能提供參照依據(jù)。同時為了防止絲桿在作業(yè)過程中發(fā)生共振，對絲桿進行模態(tài)分析，得出其固有頻率和振型，進一步確定整機的安全可靠性。
[Abstract]:The high altitude operation platform is one of the main equipment for high altitude maintenance . It can carry the staff and related equipment to the designated height for operation , and has the functions of simple operation , safety and reliability , and is widely used in the fields of city power and building . In view of the particularity of the field maintenance environment of the transformer substation , the existing equipment does not meet the requirement of the existing equipment . The main contents of this thesis are as follows : ( 1 ) According to the characteristics of the substation working site , the design parameters of the multi - function high - altitude operation platform are put forward . Based on the analysis of various schemes , a best scheme _ multi - section telescopic arm sliding type lifting mechanism is selected , which is small in size , light and convenient , and has the functions of high - altitude overhaul , hoisting , ladder and heavy load handling , and then detailed structural design of the lifting mechanism , the amplitude - changing mechanism , the rotating mechanism and the telescopic arm mechanism is carried out , so that the overall structural model is determined . ( 2 ) The three - dimensional model of the whole machine is divided by Hypermesh software . Based on this , the stress and displacement distribution law of each component under two working conditions is obtained , and the structure improvement is carried out on the stress concentration according to the result of the analysis . and ( 3 ) according to the improved analysis result , the stress concentration in each part is correspondingly reduced , but the stress of the telescopic arm is still not uniform , the discrete size optimization is carried out by using the OPTISTRUCT software , the weight and the volume of the whole machine are correspondingly reduced , the force of each component is uniform , and the ideal structure is obtained . ( 4 ) The dynamic simulation software ADAMS is applied to dynamic analysis of the multi - function high - altitude operation platform , and the dynamic characteristic curve of a series of executing mechanisms is generated , which provides a reference for the working performance of the equipment . Meanwhile , in order to prevent resonance of the screw rod during operation , the wire rod is subjected to modal analysis to obtain its natural frequency and mode shape , and the safety reliability of the whole machine is further determined .

【學位授予單位】：江蘇科技大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH211.6

【引證文獻】

相關博士學位論文 前1條

1 黃澤好;摩托車人—機剛柔耦合系統(tǒng)動態(tài)特性研究[D];重慶大學;2006年

本文編號：1389728