發(fā)布時(shí)間：2018-11-17 09:09

【摘要】：起重運(yùn)輸在整個(gè)國民經(jīng)濟(jì)中有著十分重要的地位,隨著生產(chǎn)規(guī)模的擴(kuò)大、自動(dòng)化程度的提高,提高起重機(jī)械的生產(chǎn)效率、確保運(yùn)行的安全可靠性、降低物料搬運(yùn)成本勢(shì)在必行。 本文運(yùn)用有限元軟件ANSYS的APDL語言建立了軌道集裝箱龍門起重機(jī)系統(tǒng)結(jié)構(gòu)的參數(shù)化有限元模型,并在四種不同工況下,對(duì)集裝箱龍門起重機(jī)結(jié)構(gòu)系統(tǒng)進(jìn)行了靜力學(xué)分析,獲得不同工況下的應(yīng)力圖和位移圖。得出龍門起重機(jī)的強(qiáng)度和靜剛度均滿足起重機(jī)設(shè)計(jì)規(guī)范要求,并且安全系數(shù)較大,因此有必要對(duì)龍門起重機(jī)的結(jié)構(gòu)進(jìn)行優(yōu)化,以減輕自重、節(jié)約材料。 對(duì)集裝箱龍門起重機(jī)系統(tǒng)結(jié)構(gòu)做了模態(tài)分析,得出前10階固有頻率和振型。通過諧響應(yīng)分析得出對(duì)集裝箱龍門起重機(jī)的動(dòng)態(tài)響應(yīng)影響最大、易引起共振的固有頻率和振型。 對(duì)集裝箱龍門起重機(jī)系統(tǒng)結(jié)構(gòu)建立了瞬態(tài)分析彈性動(dòng)力學(xué)模型,確定了Alpha和Beta的數(shù)值,并運(yùn)用ANSYS軟件對(duì)集裝箱龍門起重機(jī)在起吊瞬間三個(gè)階段的分析,得出集裝箱龍門起重機(jī)在起振之后并不是一直做等幅振動(dòng),由于阻尼的存在,振幅不斷衰減,系統(tǒng)由暫態(tài)響應(yīng)變?yōu)榉�(wěn)態(tài)響應(yīng)。 根據(jù)結(jié)構(gòu)優(yōu)化設(shè)計(jì)和機(jī)械結(jié)構(gòu)動(dòng)態(tài)設(shè)計(jì)理論和方法,對(duì)集裝箱龍門起重機(jī)結(jié)構(gòu)系統(tǒng)進(jìn)行了以重量為目標(biāo)函數(shù)的優(yōu)化,經(jīng)過優(yōu)化后,系統(tǒng)減少質(zhì)量14.9% ,節(jié)約了成本,提高了經(jīng)濟(jì)效益。
[Abstract]:Lifting transportation plays an important role in the whole national economy. With the expansion of production scale and the improvement of automation, it is imperative to improve the production efficiency of lifting machinery, ensure the safety and reliability of operation, and reduce the cost of material handling. In this paper, the parameterized finite element model of rail container gantry crane system structure is established by using APDL language of finite element software ANSYS, and static analysis of container gantry crane structure system is carried out under four different working conditions. The stress and displacement diagrams are obtained under different working conditions. It is concluded that the strength and static stiffness of the gantry crane meet the requirements of the crane design code and the safety factor is high, so it is necessary to optimize the structure of the gantry crane in order to reduce the weight of the gantry crane and save the material. The modal analysis of container gantry crane system is carried out, and the first 10 natural frequencies and modes are obtained. Through harmonic response analysis, it is found that the dynamic response of container gantry crane is most affected, and the natural frequency and mode of resonance are easy to be caused. The transient analysis elastic dynamic model of container gantry crane system structure is established, the numerical value of Alpha and Beta is determined, and the three stages of container gantry crane in lifting moment are analyzed by ANSYS software. It is concluded that the container gantry crane does not always do the same amplitude vibration after starting the vibration. Because of the existence of damping, the amplitude of the crane decreases continuously, and the system changes from transient response to steady state response. According to the theory and method of structural optimization design and dynamic design of mechanical structure, the structure system of container gantry crane is optimized with weight as the objective function. After optimization, the quality of the system is reduced by 14.9%, and the cost is saved. The economic efficiency has been improved.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH213.5

【引證文獻(xiàn)】

中國碩士學(xué)位論文全文數(shù)據(jù)庫 前2條

1 楊利業(yè);引線鍵合自動(dòng)送線系統(tǒng)關(guān)鍵技術(shù)研究[D];天津大學(xué);2012年

2 柴源;真空輥技術(shù)在鋁板帶縱剪機(jī)組中的應(yīng)用與研究[D];沈陽理工大學(xué);2012年

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本文編號(hào)：2337248