【摘要】：液壓馬達是液壓系統(tǒng)中重要的執(zhí)行元件，而現(xiàn)有的定量馬達在輸入定流量和定壓力液壓油時，只能輸出一種轉(zhuǎn)速和轉(zhuǎn)矩，很明顯當這種定量馬達應(yīng)用在變速或變轉(zhuǎn)矩較大的系統(tǒng)中時，系統(tǒng)的效率較低。雙轉(zhuǎn)子凸輪轉(zhuǎn)子葉片馬達是一種新型結(jié)構(gòu)的液壓馬達，它在一個馬達的殼體內(nèi)形成了內(nèi)、外多個馬達，且內(nèi)、外馬達工作相互獨立，通過改變內(nèi)、外馬達油口的連接方式可以實現(xiàn)馬達的多級定排量輸出。即一臺雙轉(zhuǎn)子凸輪轉(zhuǎn)子葉片馬達在輸入定壓力、定流量液壓油的條件下，不通過輔助調(diào)節(jié)控制閥就能夠?qū)崿F(xiàn)多種轉(zhuǎn)速和轉(zhuǎn)矩輸出。 本文首先介紹了國內(nèi)、外液壓元件的現(xiàn)狀與發(fā)展趨勢和國內(nèi)專家、學(xué)者對凸輪轉(zhuǎn)子葉片馬達的研究方向。在分析了現(xiàn)有馬達存在問基的礎(chǔ)上，提出了一種新型結(jié)構(gòu)的“雙轉(zhuǎn)子”凸輪葉片馬達，并對馬達的結(jié)構(gòu)特點，工作原理和創(chuàng)新應(yīng)用進行了詳細的介紹，對馬達內(nèi)轉(zhuǎn)子和外轉(zhuǎn)子的受力進行了分析，推導(dǎo)出了馬達瞬時轉(zhuǎn)矩公式，找出了影響馬達轉(zhuǎn)矩脈動的參數(shù)。運用仿真軟件solidworks建立了連桿和內(nèi)轉(zhuǎn)子的三維模型并對其強度進行了仿真，主要包括：對連桿滾柱運動學(xué)分析和對連桿磨損前和滾柱直徑磨損0.5mm后的連桿抗彎應(yīng)力強度仿真，以及內(nèi)馬達單獨組合工作時，連桿徑向抗壓強度仿真。建立了馬達的泄漏數(shù)學(xué)模型，找出了影響馬達泄漏的主要因素，提出了提高馬達容積效率的方法。最后，，通過樣機的實驗，驗證了新型結(jié)構(gòu)馬達工作原理的可行性，并針對得出的結(jié)論進行了分析和對以后工作的展望。 以上所做的工作，只是馬達設(shè)計初級階段工作，這些結(jié)論和參數(shù)的獲取，為雙轉(zhuǎn)子凸輪葉片馬達的優(yōu)化設(shè)計，以便更好地應(yīng)用于實際奠定了基礎(chǔ)。
[Abstract]:Hydraulic motor is an important executive element in hydraulic system, and the existing quantitative motor can only output one kind of rotational speed and torque when input constant flow and constant pressure hydraulic oil. It is obvious that the efficiency of the system is lower when the quantitative motor is used in the system with high speed change or variable torque. The double-rotor cam-rotor blade motor is a new type of hydraulic motor. It forms inner and outer motors in the shell of a motor, and the inner and outer motors work independently of each other by changing the inside. The multi-stage fixed displacement output of the motor can be realized by the connecting mode of the oil port of the outer motor. That is, a double-rotor cam-rotor blade motor can achieve multi-speed and torque output without auxiliary adjusting control valve under the condition of constant pressure and constant flow of hydraulic oil. In this paper, the present situation and development trend of hydraulic components at home and abroad are introduced firstly, and the research direction of cam rotor vane motor by domestic experts and scholars is also introduced. Based on the analysis of the existing motor, a new type of "double rotor" camshaft blade motor is proposed, and the structure characteristics, working principle and innovative application of the motor are introduced in detail. The force on the inner and outer rotors of the motor is analyzed and the instantaneous torque formula of the motor is derived. The parameters affecting the torque ripple of the motor are found out. The three-dimensional model of connecting rod and inner rotor is established by using simulation software solidworks, and its strength is simulated. The main contents are as follows: kinematic analysis of connecting rod roller and simulation of bending stress intensity of connecting rod before wear and after 0.5mm wear of roller diameter. The radial compressive strength of the connecting rod is simulated when the internal motor is combined with each other. The mathematical model of motor leakage is established, the main factors affecting motor leakage are found out, and the method to improve motor volume efficiency is put forward. Finally, the feasibility of the working principle of the new structure motor is verified by the experiment of the prototype, and the conclusion is analyzed and the future work is prospected. The work done above is only in the initial stage of motor design. The obtaining of these conclusions and parameters has laid a foundation for the optimization design of double-rotor cam vane motor in order to better apply it to practice.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH137.51

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