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摘 要
根據(jù)大功率低速船用柴油機(jī)曲軸轉(zhuǎn)子—軸承系統(tǒng)的動(dòng)力學(xué)特性，研究了動(dòng)力學(xué)試驗(yàn)臺(tái)的設(shè)計(jì)原則、各個(gè)組成部分的功能、動(dòng)力學(xué)試驗(yàn)臺(tái)應(yīng)具有的性能等問(wèn)題，最后，成功研制出一臺(tái)動(dòng)力學(xué)試驗(yàn)臺(tái)。該試驗(yàn)臺(tái)可用于研究系統(tǒng)的時(shí)間響應(yīng)、頻率響應(yīng)、軸心軌跡，檢測(cè)氣缸內(nèi)的壓力變化規(guī)律，控制曲軸的轉(zhuǎn)速和氣缸內(nèi)的壓力等。
對(duì)該試驗(yàn)臺(tái)中的曲柄連桿機(jī)構(gòu)主要零部件進(jìn)行了結(jié)構(gòu)設(shè)計(jì)計(jì)算，并對(duì)曲柄連桿機(jī)構(gòu)進(jìn)行了有關(guān)運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)的理論分析。
首先，以運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)的理論知識(shí)為依據(jù)，對(duì)曲柄連桿機(jī)構(gòu)的運(yùn)動(dòng)規(guī)律以及在運(yùn)動(dòng)中的受力等問(wèn)題進(jìn)行詳盡的分析，并得到了精確的分析結(jié)果。其次分別對(duì)活塞組、連桿組以及曲軸進(jìn)行詳細(xì)的結(jié)構(gòu)設(shè)計(jì)，并進(jìn)行了結(jié)構(gòu)強(qiáng)度和剛度的校核。
關(guān)鍵詞：試驗(yàn)臺(tái) 曲軸轉(zhuǎn)子—軸承系統(tǒng) 發(fā)動(dòng)機(jī) 曲柄連桿機(jī)構(gòu) 力學(xué)分析
Abstract
High-power low-speed marine diesel engine crankshaft rotor - bearing system dynamics, the study of the dynamics test station design principles, the various components of the function, and dynamics test station should have performance problems, and finally, successfully developed adynamics test station. The test station may be used for research systems response, frequency response, orbit, the pressure variation in the detected within the cylinder, the control of the rotational speed of the crankshaft and the pressure inside the cylinder.
Structural design calculations, the main components of the test Taichung crank linkage and crank linkage theoretical analysis of the kinematics and dynamics.
First of all, the basis of theoretical knowledge of the kinematics and dynamics, detailed analysis of the crank linkage law of motion and force in the movement, and to get a precise analysis of the results. Followed by detailed structural design of the piston group, the link group as well as the crankshaft, and the checking of structural strength and stiffness.
Keywords: The crankshaft rotor - bearing system engine crank linkage mechanical analysis of the test rig
目 錄
摘要 .............................. .... .... .............................................................................................. ...................I
Abstract ......................................................... ........................................................................................... II
目錄 .............................. .... .... .............................................................................................. ...................III
第一章.緒論 1
1.1 研究背景 1
1.2 國(guó)內(nèi)外研究現(xiàn)狀 2
1.3 經(jīng)濟(jì)效益與社會(huì)效益 3
1.4 本課題的研究?jī)?nèi)容 4
第二章.曲柄連桿機(jī)構(gòu)受力分析 5
2.1 曲柄連桿機(jī)構(gòu)的類(lèi)型及方案選擇 5
2.2 曲柄連桿機(jī)構(gòu)運(yùn)動(dòng)學(xué) 6
2.3 曲柄連桿機(jī)構(gòu)中的作用力 9
第三章.活塞組的設(shè)計(jì) 17
3.1活塞的設(shè)計(jì) 17
3.2活塞銷(xiāo)的設(shè)計(jì) 24
第四章.連桿組的設(shè)計(jì) 26
4.1連桿的設(shè)計(jì) 26
4.2連桿螺栓的設(shè)計(jì) 35
致 謝 37
參考文獻(xiàn) 38
III
III