【摘要】：液壓動力單元是液壓系統(tǒng)的基礎(chǔ)和關(guān)鍵，即“心臟”，無論是工業(yè)機械，還是工程機械，以及國防尖端產(chǎn)品和其他涉及到液壓的行業(yè)，對其都具有較高的要求。蘭州理工大學以高精度、高效率、輕量化、模式化、靜音節(jié)能等方面為基準點，結(jié)合相關(guān)基礎(chǔ)性學科知識，通過理論分析、數(shù)據(jù)計算、數(shù)值模擬、流場仿真等，設(shè)計出的液壓電機葉片泵動力單元具有結(jié)構(gòu)緊湊、體積小、噪音小無外泄漏污染低、效率較高等優(yōu)點。 如今，轉(zhuǎn)子系統(tǒng)向著高轉(zhuǎn)速、細長和高效率的方向發(fā)展。由于電機泵轉(zhuǎn)子系統(tǒng)材質(zhì)的不均勻，以及制造、加工及裝配存在的誤差等，導致質(zhì)量偏心，加上工作中所產(chǎn)生的熱變形、磨損等產(chǎn)生不均勻的離心力，使轉(zhuǎn)子系統(tǒng)高速旋轉(zhuǎn)時產(chǎn)生不平衡振動。此時，轉(zhuǎn)子動力學問題是制約電機轉(zhuǎn)子系統(tǒng)研制的一個主要因素。由于液壓電機葉片泵的轉(zhuǎn)子系統(tǒng)具有獨特的創(chuàng)新設(shè)計和技術(shù)要求，其動力學分析也就具有一定的意義。 因此，本文作者運用轉(zhuǎn)子系統(tǒng)動力學相關(guān)理論，結(jié)合電機葉片泵轉(zhuǎn)子系統(tǒng)特點，對電機泵轉(zhuǎn)子進行了相應(yīng)的理論分析；對電機葉片泵轉(zhuǎn)子建模，分析四種不同支撐方式下對轉(zhuǎn)子系統(tǒng)動特性的影響，利用ANSYS分析軟件分別對電機泵轉(zhuǎn)子進行動力學分析計算；對電機泵轉(zhuǎn)子系統(tǒng)的不平衡響應(yīng)進行仿真分析，針對定轉(zhuǎn)速穩(wěn)態(tài)響應(yīng)時的動不平衡響應(yīng)特性進行分析；對電機泵轉(zhuǎn)子系統(tǒng)進行了分析計算和優(yōu)化；對電機泵樣機轉(zhuǎn)子進行動平衡實驗校核，，通過實驗對轉(zhuǎn)速測試實驗數(shù)據(jù)與流量數(shù)據(jù)進行分析。 論文的主要內(nèi)容： 第1章，闡述本課題的研究背景；概述國內(nèi)外液壓電機泵的研究狀況及發(fā)展和蘭州理工大學對液壓電機葉片泵的研究現(xiàn)狀及取得的成果；陳述轉(zhuǎn)子系統(tǒng)動力學研究概況；概括本論文的主要研究目的、內(nèi)容及意義。 第2章，運用轉(zhuǎn)子系統(tǒng)動力學相關(guān)理論，結(jié)合電機泵轉(zhuǎn)子系統(tǒng)特點，對電機泵轉(zhuǎn)子進行了相應(yīng)的理論分析。 第3章，對電機葉片泵建模，分析四種不同支撐方式下對轉(zhuǎn)子系統(tǒng)動特性的影響，利用ANSYS分析軟件對電機泵轉(zhuǎn)子進行動力學計算。 第4章，針對定轉(zhuǎn)速的穩(wěn)態(tài)響應(yīng)特性對轉(zhuǎn)子不平衡響應(yīng)進行分析，進行動平衡校準。 第5章，針對研制出的第二代電機葉片泵樣機建立了電機泵性能測試系統(tǒng)，對電機泵在不同壓力下進行流量測試和轉(zhuǎn)速測試，獲得了樣機的輸出流量參數(shù)及轉(zhuǎn)子轉(zhuǎn)速。
[Abstract]:Hydraulic power unit is the basis and key of hydraulic system, that is, "heart", whether industrial machinery or construction machinery, as well as national defense cutting-edge products and other industries involving hydraulic pressure, all of them have higher requirements. Lanzhou University of Science and Technology regards high precision, high efficiency, lightweight, pattern, mute energy saving and so on as the reference point, combines the related basic discipline knowledge, through the theoretical analysis, the data computation, the numerical simulation, the flow field simulation and so on, The designed hydraulic motor vane pump power unit has compact structure, small volume and low noise. No leaks? Low pollution, high efficiency and other advantages. Nowadays, rotor system develops towards high speed, slender and high efficiency. Due to the uneven material of the motor pump rotor system and the errors existing in manufacturing, processing and assembling, the mass eccentricity is caused by the non-uniform centrifugal force caused by the thermal deformation and wear in the work. An unbalanced vibration occurs when the rotor system rotates at high speed. At this point, rotor dynamics is one of the main factors restricting the development of motor rotor system. Because the rotor system of hydraulic motor vane pump has unique innovative design and technical requirements, its dynamic analysis has certain significance. Therefore, the author applies the theory of rotor system dynamics, combined with the characteristics of rotor system of motor vane pump, carries on the corresponding theoretical analysis to the motor pump rotor. The rotor model of the motor vane pump is modeled, and the influence of four different supporting modes on the dynamic characteristics of the rotor system is analyzed. The dynamic analysis and calculation of the motor pump rotor are carried out by using the ANSYS analysis software. The unbalance response of the motor pump rotor system is simulated and analyzed, and the dynamic unbalance response characteristic of the motor pump rotor system under the steady state response of constant speed is analyzed, and the calculation and optimization of the motor pump rotor system are carried out. The rotor of motor pump prototype is checked by dynamic balance experiment, and the experimental data and flow data are analyzed. The main contents of this paper are as follows: in chapter 1, the research background of this subject is described, the research status and development of hydraulic motor pump at home and abroad and the research status and achievements of hydraulic motor vane pump in Lanzhou University of Technology are summarized. The main purpose, content and significance of this paper are summarized. In chapter 2, using the theory of rotor system dynamics and combining the characteristics of motor pump rotor system, the corresponding theoretical analysis of motor pump rotor is carried out. In chapter 3, the model of motor vane pump is built, and the influence of four different support modes on the dynamic characteristics of rotor system is analyzed. The dynamic calculation of motor pump rotor is carried out by using ANSYS software. In chapter 4, the rotor unbalance response is analyzed and calibrated. In chapter 5, the motor pump performance test system is established for the second generation motor vane pump prototype. The flow rate and speed of the motor pump are tested under different pressure, and the output flow parameters and rotor speed of the motor pump are obtained.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH137.51

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