【摘要】：石油鉆機(jī)轉(zhuǎn)盤傳動(dòng)齒輪的疲勞壽命是評價(jià)石油鉆機(jī)整體性能的重要指標(biāo)之一。鉆機(jī)轉(zhuǎn)盤工作環(huán)境極其復(fù)雜,常處于各種未知沖擊與重載等環(huán)境下工作,預(yù)測并計(jì)算其壽命相當(dāng)重要。疲勞壽命的計(jì)算一般懫用綜合疲勞試驗(yàn)臺進(jìn)行測試或物理樣機(jī)破壞試驗(yàn),不但耗時(shí)長、費(fèi)用高,而且在設(shè)計(jì)階段無法預(yù)測出其疲勞壽命。分析國產(chǎn)轉(zhuǎn)盤系統(tǒng)的動(dòng)力特性,計(jì)算轉(zhuǎn)盤齒輪的疲勞性能對于優(yōu)化轉(zhuǎn)盤驅(qū)動(dòng)系統(tǒng)的設(shè)計(jì),改善國產(chǎn)鉆井機(jī)的綜合性能,提升國產(chǎn)鉆井機(jī)的競爭力意義重大。本文以目前國內(nèi)最大轉(zhuǎn)盤ZP495為對象,利用聯(lián)合仿真技術(shù)對典型的理論工況下鉆機(jī)轉(zhuǎn)盤齒彎曲輪疲勞壽命進(jìn)行了仿真分析,具體做了以下幾項(xiàng)工作:運(yùn)用PRO/E建模技術(shù)搭建了轉(zhuǎn)盤驅(qū)動(dòng)系統(tǒng)的三維模型,在動(dòng)力學(xué)軟件ADAMS中對模型進(jìn)行了動(dòng)力學(xué)仿真計(jì)算,得到了轉(zhuǎn)盤錐齒輪的嚙合力并分析了其變化特性,得到的曲線數(shù)據(jù)與分析結(jié)果為轉(zhuǎn)盤驅(qū)動(dòng)系統(tǒng)的控制及錐齒輪的壽命仿真提供了數(shù)據(jù)支撐。對仿真載荷進(jìn)行了疲勞統(tǒng)計(jì)分析處理,運(yùn)用雨流計(jì)數(shù)原理對載荷數(shù)據(jù)進(jìn)行了載荷分級、累積頻次合成、各級循環(huán)計(jì)數(shù)等計(jì)算,得到了仿真載荷的載荷分布矩陣表、累積損傷率曲線以及雨流直方圖。用簡單的方法描述了仿真載荷數(shù)據(jù)的特性,實(shí)現(xiàn)了對載荷的規(guī)范清晰化處理。建立了轉(zhuǎn)盤錐齒輪的簡化有限元模型,分析了錐齒輪彎曲應(yīng)力的分布情況,確定了其彎曲疲勞的危險(xiǎn)部位。基于錐齒輪有限元分析的結(jié)果,以名義應(yīng)力法為基礎(chǔ),結(jié)合仿真的載荷以及材料曲線,在疲勞仿真軟件Designlife中計(jì)算了轉(zhuǎn)盤錐齒輪的疲勞壽命,得到了在理論工況下的轉(zhuǎn)盤齒輪彎曲疲勞壽命,實(shí)現(xiàn)了對轉(zhuǎn)盤錐齒輪的疲勞壽命預(yù)測。本文的研究成果為轉(zhuǎn)盤錐齒輪的設(shè)計(jì)優(yōu)化、壽命預(yù)測以及后期維護(hù)有借鑒與參考價(jià)值。
[Abstract]:The fatigue life of rotary drive gear of oil drilling rig is one of the important indexes to evaluate the whole performance of oil drilling rig. The working environment of rotary disc of drilling rig is extremely complex and often works under various unknown shocks and heavy loads. It is very important to predict and calculate its life. The calculation of fatigue life is usually carried out by comprehensive fatigue test bench or physical prototype test. It is not only time-consuming and costly, but also unable to predict its fatigue life in the design stage. It is of great significance to analyze the dynamic characteristics of the domestic rotary disk system and calculate the fatigue performance of the rotating disk gear for optimizing the design of the rotary disc drive system, improving the comprehensive performance of the domestic drilling rig and enhancing the competitiveness of the domestic drilling rig. In this paper, the fatigue life of the bending wheel of rotary gear of drilling rig under typical theoretical working condition is simulated and analyzed by using the ZP495 of the largest turntable in our country, and the joint simulation technology is used to analyze the fatigue life of the bending wheel. The following works are done: using PRO/E modeling technology to build the 3D model of the rotary disk drive system, the dynamic simulation calculation of the model is carried out in the dynamic software ADAMS, the meshing force of the rotating disc bevel gear is obtained and its variation characteristics are analyzed. The obtained curve data and analysis results provide data support for the control of rotary disk drive system and the simulation of bevel gear life. The fatigue statistical analysis of simulated load is carried out, and the load distribution matrix of simulated load is obtained by calculating load classification, cumulative frequency synthesis, cycle counting and so on, using the principle of rain flow counting. Cumulative damage rate curve and rain flow histogram. The characteristics of the simulation load data are described by a simple method, and the specification of the load is clarified. The simplified finite element model of spiral bevel gear is established, the distribution of bending stress of bevel gear is analyzed, and the dangerous position of bending fatigue is determined. Based on the results of finite element analysis of bevel gears, the fatigue life of spiral bevel gears is calculated in the fatigue simulation software Designlife, based on the nominal stress method, combined with the simulated load and material curve. The bending fatigue life of rotating disc gear under theoretical working condition is obtained, and the fatigue life prediction of rotating disc bevel gear is realized. The research results of this paper have reference value for the design optimization, life prediction and later maintenance of rotary bevel gear.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE922

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本文編號：2270660