本文選題：硬巖掘進(jìn)機(jī) + 聯(lián)合仿真　； 參考：《天津大學(xué)》2014年碩士論文

【摘要】：本文緊密結(jié)合國家863課題“大直徑全斷面隧道掘進(jìn)裝備及重大工程機(jī)械裝備研究”和973課題“硬巖掘進(jìn)裝備的關(guān)鍵基礎(chǔ)問題”,以研究TBM的主機(jī)系統(tǒng)特性為目的,對其支撐-推進(jìn)-換步系統(tǒng)進(jìn)行了建模和仿真分析。旨在對糾偏系統(tǒng)、推進(jìn)系統(tǒng)等進(jìn)行詳細(xì)準(zhǔn)確的數(shù)字化建模,并在此基礎(chǔ)上對其特性進(jìn)行分析。在詳細(xì)介紹了TBM主機(jī)系統(tǒng),尤其是其支撐-推進(jìn)-換步系統(tǒng)的機(jī)械結(jié)構(gòu)功能并設(shè)計(jì)了液壓系統(tǒng)的基礎(chǔ)上,確定了TBM的主要工作步驟和各部分關(guān)節(jié)間的相互運(yùn)動形式,分析并確定了TBM推進(jìn)液壓缸部分的四缸連通結(jié)構(gòu)及其強(qiáng)機(jī)液耦合特性,為后文的數(shù)字模型建立和仿真分析奠定了基礎(chǔ)。為了解決其多系統(tǒng)耦合特性的仿真問題,采用聯(lián)合仿真的方式進(jìn)行分析。建立了推進(jìn)系統(tǒng)的機(jī)械、液壓和控制系統(tǒng)模型,正確添加聯(lián)合仿真模塊和通訊接口,建立了軟件間的聯(lián)系,在合理添加圍巖邊界條件的基礎(chǔ)上對其糾偏系統(tǒng)動態(tài)特性進(jìn)行了仿真。分析了TBM支撐-推進(jìn)-換步系統(tǒng)在正常推進(jìn)過程中由于受力原因造成偏載時糾偏系統(tǒng)的動態(tài)響應(yīng),重點(diǎn)分析了載荷波動頻率、載荷形式、液壓油源參數(shù)、推程以及液壓元件參數(shù)對糾偏性能的影響,同時提出了糾偏率這一性能評價指標(biāo)。針對TBM系統(tǒng)設(shè)計(jì)中高剛度這一重要設(shè)計(jì)指標(biāo),對推進(jìn)系統(tǒng)部分零部件進(jìn)行了有限元網(wǎng)格劃分,對掘進(jìn)中整機(jī)剛度情況進(jìn)行了研究。分析了不同推程下整機(jī)剛度的變化,以及系統(tǒng)各部分零部件對整機(jī)剛度的貢獻(xiàn)情況,得出了一系列應(yīng)力和變形云圖以及剛度變化趨勢。其中重點(diǎn)對液壓系統(tǒng)的等效剛度進(jìn)行了計(jì)算,得出了整機(jī)剛度的薄弱環(huán)節(jié),并由此提出了提高整機(jī)剛度的幾種解決方案。文章采用數(shù)字仿真的方式對TBM推進(jìn)系統(tǒng)的特性進(jìn)行詳細(xì)分析,得出一系列重要結(jié)論和規(guī)律,為項(xiàng)目后續(xù)的數(shù)字樣機(jī)建立,試驗(yàn)臺搭建,乃至樣機(jī)的研制生產(chǎn)提供重要技術(shù)支撐。
[Abstract]:In this paper, the main purpose of this paper is to study the characteristics of TBM mainframe system by combining the national 863 project "study of large-diameter full-section tunneling equipment and major construction machinery equipment" and 973 project "key basic problems of hard rock tunneling equipment", in order to study the characteristics of TBM mainframe system. The modeling and simulation of the supporting-propulsion-step-changing system are carried out. The aim of this paper is to carry on the detailed and accurate digital modeling of the correction system and the propulsion system, and to analyze the characteristics of the system. On the basis of introducing in detail the mechanical structure function of TBM mainframe system, especially its supporting, propulsive and changing step system and designing hydraulic system, the main working steps of TBM and the mutual motion form of each part of joints are determined. The four-cylinder connection structure of TBM propulsion hydraulic cylinder and its strong mechanical and liquid coupling characteristics are analyzed and determined, which lays a foundation for the establishment of digital model and simulation analysis later on. In order to solve the problem of multi-system coupling, the method of joint simulation is used. The mechanical, hydraulic and control system models of the propulsion system are established, the joint simulation module and communication interface are added correctly, and the relationship between the software is established. Based on the reasonable addition of surrounding rock boundary conditions, the dynamic characteristics of the correction system are simulated. In this paper, the dynamic response of the bias correction system of TBM brace-propulsive and changing step system during normal propulsion is analyzed, and the load fluctuation frequency, load form and hydraulic oil source parameters are analyzed, especially, the load fluctuation frequency, load form and hydraulic oil source parameters are analyzed, and the load fluctuation frequency, load form and hydraulic source parameters are analyzed. The influence of push range and hydraulic component parameters on the deviation correction performance is also presented, and the performance evaluation index of deviation correction rate is put forward. Aiming at the important design index of high stiffness in the design of TBM system, the finite element mesh of some parts of the propulsion system is carried out, and the stiffness of the whole machine in the driving process is studied. The variation of the stiffness of the whole machine and the contribution of parts and components of the system to the stiffness of the whole machine are analyzed. A series of stress and deformation cloud diagrams and the change trend of the stiffness are obtained. The equivalent stiffness of hydraulic system is calculated, the weak link of the stiffness of the whole machine is obtained, and several solutions to improve the stiffness of the whole machine are put forward. In this paper, the characteristics of TBM propulsion system are analyzed in detail by means of digital simulation, and a series of important conclusions and rules are obtained, which provide important technical support for the construction of digital prototype, the construction of test bench, and the development and production of prototype.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U455.31

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