本文關(guān)鍵詞：多功能高空作業(yè)平臺(tái)設(shè)計(jì)及關(guān)鍵機(jī)構(gòu)動(dòng)態(tài)特性分析　出處：《江蘇科技大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高空作業(yè)平臺(tái) 起重機(jī) 結(jié)構(gòu)設(shè)計(jì) 有限元分析 優(yōu)化 動(dòng)態(tài)分析

【摘要】：高空作業(yè)平臺(tái)是高空維修的主要設(shè)備之一，能將工作人員和相關(guān)設(shè)備運(yùn)送到指定高度進(jìn)行作業(yè)，具有操作簡(jiǎn)單、安全可靠等功能，廣泛應(yīng)用于城市電力、建筑等領(lǐng)域。由于變電站現(xiàn)場(chǎng)維修環(huán)境的特殊性，現(xiàn)有的設(shè)備并不能完全滿足現(xiàn)場(chǎng)維修的需要，急需一種新型設(shè)備來(lái)克服現(xiàn)有設(shè)備的缺陷。本文針對(duì)以上問(wèn)題，以檢修變電站某種類型的互感器為對(duì)象，對(duì)現(xiàn)有的高空作業(yè)平臺(tái)進(jìn)行深入的研究，研制一種集高空作業(yè)平臺(tái)和起重機(jī)于一體的多功能高空作業(yè)平臺(tái)，在分析整體方案的基礎(chǔ)上，針對(duì)起重機(jī)的受力特點(diǎn)，建立了承載多種載荷工況的幾何模型，進(jìn)行了有限元分析和優(yōu)化，并對(duì)關(guān)鍵機(jī)構(gòu)進(jìn)行動(dòng)態(tài)特性的研究，為新產(chǎn)品的開發(fā)提供了一定的指導(dǎo)。 論文主要研究了以下內(nèi)容： (1)針對(duì)變電站工作現(xiàn)場(chǎng)的特點(diǎn)，提出了多功能高空作業(yè)平臺(tái)的設(shè)計(jì)參數(shù)，在分析多種方案的基礎(chǔ)上，選出了一種最佳方案——多節(jié)伸縮臂滑動(dòng)式升降機(jī)構(gòu)，體積小、輕巧方便，同時(shí)具有高空檢修、吊裝、梯子和重物搬運(yùn)等功能，然后對(duì)起吊機(jī)構(gòu)、變幅機(jī)構(gòu)、旋轉(zhuǎn)機(jī)構(gòu)和伸縮臂機(jī)構(gòu)進(jìn)行詳細(xì)的結(jié)構(gòu)設(shè)計(jì)，從而確定了整體結(jié)構(gòu)模型。 (2)應(yīng)用Hypermesh軟件對(duì)整機(jī)的三維模型進(jìn)行網(wǎng)格劃分，在此基礎(chǔ)上運(yùn)用ABAQUS軟件進(jìn)行有限元分析，得到了兩種工況下各構(gòu)件的應(yīng)力和位移分布規(guī)律，，并根據(jù)分析結(jié)果對(duì)應(yīng)力集中處進(jìn)行結(jié)構(gòu)改進(jìn)。 (3)根據(jù)改進(jìn)后的分析結(jié)果，各處應(yīng)力集中都相應(yīng)的減小，但伸縮臂受力仍不均勻，應(yīng)用OPTISTRUCT軟件進(jìn)行離散尺寸優(yōu)化，使整機(jī)的重量和體積都相應(yīng)減小，各構(gòu)件受力均勻，獲得了較為理想的結(jié)構(gòu)。 (4)運(yùn)用動(dòng)力學(xué)仿真軟件ADAMS對(duì)多功能高空作業(yè)平臺(tái)進(jìn)行了動(dòng)態(tài)分析，生成一系列執(zhí)行機(jī)構(gòu)的動(dòng)力學(xué)特性曲線，為設(shè)備的工作性能提供參照依據(jù)。同時(shí)為了防止絲桿在作業(yè)過(guò)程中發(fā)生共振，對(duì)絲桿進(jìn)行模態(tài)分析，得出其固有頻率和振型，進(jìn)一步確定整機(jī)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(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH211.6

【引證文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 黃澤好;摩托車人—機(jī)剛?cè)狁詈舷到y(tǒng)動(dòng)態(tài)特性研究[D];重慶大學(xué);2006年

本文編號(hào)：1389728