本文選題：徑向柱塞泵　切入點：動力端　出處：《武漢理工大學》2012年碩士論文　論文類型：學位論文

【摘要】：隨著工業(yè)技術的高速騰飛及知識經(jīng)濟時代的到來,現(xiàn)代工業(yè)設備的自動化水平得到了飛速提高,現(xiàn)代工業(yè)裝備表現(xiàn)出高度自動化、集成化、智能化的趨勢；工業(yè)生產(chǎn)對現(xiàn)代設備綜合性能提出了越來越高的要求,普通的常規(guī)機械設備已不能完全滿足使用要求,柱塞泵作為工業(yè)設備的重要組成部分同樣面臨嚴峻挑戰(zhàn)。本論文致力于設計出一種全新的徑向柱塞往復泵,為改善基于常規(guī)的曲柄連桿機構和傳統(tǒng)的凸輪機構往復泵的缺陷,泵的動力端運用微可調滑動機構。擁有設計新穎、結構簡單、性能可靠、運行平穩(wěn)、低耗能、低噪音、裝拆便捷,應用范圍廣等諸多優(yōu)點。 本文所做的一系列的研究和探討是基于柱塞泵的動力端作為研究目標的,分析了常規(guī)曲柄連桿機構及傳統(tǒng)凸輪機構柱塞泵的結構原理及其弊端所在,在此基礎上開發(fā)出了一種新型的四缸徑向柱塞泵,并就動力端提出了兩種設計方案,詳細闡述了其工作原理及結構方案,通過對動力端的關鍵零部件進行結構設計及工藝分析,進一步改善動力端的性能。 利用Pro/E建立動力端兩種方案的三維模型,并分析計算兩種方案的優(yōu)劣之處；選取優(yōu)勢方案并將三維模型導入Adams,建立往復泵的動力端模型的虛擬樣機,添加邊界條件及驅動后對往復泵泵的動力端進行仿真分析計算,快捷方便的得出動力端關鍵零部件的運動學及動力學參數(shù)曲線,可清晰觀察柱塞泵的運動學特性。結合理論分析計算及多體動力學仿真分析的結果,進行對比分析研究為泵進一步設計和改進提供參考依據(jù)。對偏心主軸完成了結構與工藝特性研究及動平衡設計,可有效減小由主軸組件的質心同其旋轉中心不同軸所引起的慣性力。利用ANSYS對偏心主軸進行結構分析和疲勞破壞分析,研究分析兩種分析應力、應變情況；同時研究分析偏心主軸振動性,對其進行考慮預應力影響的模態(tài)分析,列出各階固有頻率,并考察偏心主軸在各階固有頻率下發(fā)生共振時的應力、應變情況以防其發(fā)生共振破壞。 本文的擁有以下創(chuàng)新之處： 1、該柱塞泵動力端的新型方案采用微可調弧面滑動機構代替常規(guī)曲柄連桿機構和傳統(tǒng)凸輪機構,使其同時具備的承載能力強及結構簡單的優(yōu)勢。 2、將柱塞組件連接處設計成可轉動球面式,有效減小了弧形滑塊的所受的彎矩；用新型復位機構取代傳統(tǒng)的彈簧及油泵復位機構,使得復位簡單、可靠。
[Abstract]:With the rapid development of industrial technology and the arrival of the era of knowledge economy, the automation level of modern industrial equipment has been rapidly improved, and modern industrial equipment shows the trend of high automation, integration and intelligence. Industrial production has put forward more and more high requirements for the comprehensive performance of modern equipment. Ordinary conventional machinery and equipment can no longer fully meet the requirements of use. As an important part of industrial equipment, piston pump also faces severe challenges. This paper is devoted to design a new radial plunger reciprocating pump, in order to improve the defects of conventional crank linkage mechanism and traditional cam mechanism reciprocating pump. The pump has many advantages, such as novel design, simple structure, reliable performance, stable operation, low energy consumption, low noise, convenient installation and disassembly, wide application range and so on. A series of research and discussion in this paper is based on the dynamic end of piston pump as the research objective. The structure principle and malpractice of conventional crank linkage mechanism and traditional cam mechanism piston pump are analyzed. On this basis, a new type of four-bore piston pump is developed, and two design schemes for the power end are put forward. The working principle and structure scheme of the pump are described in detail. The structural design and process analysis of the key parts of the power end are carried out. Further improve the performance of the power end. Using Pro/E to build the 3D model of two schemes of power end, and analyze the advantages and disadvantages of the two schemes, select the superior scheme and import the 3D model into Adams, and establish the virtual prototype of the power end model of reciprocating pump. After adding boundary conditions and driving, the kinematics and dynamic parameters of the key parts of the reciprocating pump can be obtained quickly and conveniently by the simulation analysis and calculation of the power end of the reciprocating pump. The kinematics characteristics of piston pump can be observed clearly. The comparative analysis provides a reference for the further design and improvement of the pump. The structure and process characteristics of the eccentric spindle and the design of the dynamic balance are completed. The inertial force caused by the center of mass of the spindle assembly and the different axes of the center of rotation can be effectively reduced. The structural analysis and fatigue failure analysis of the eccentric spindle are carried out by using ANSYS, and the two kinds of analytical stress and strain are studied and analyzed. At the same time, the vibration of the eccentric spindle is analyzed, and the modal analysis considering the influence of prestress is carried out, and the natural frequencies of each order are listed, and the stress of the eccentric spindle when resonance occurs at each natural frequency is investigated. Strain in case of resonance failure. This article has the following innovations:. 1. The new scheme of the piston pump adopts the micro-adjustable globoidal sliding mechanism instead of the conventional crank linkage mechanism and the traditional cam mechanism, which makes the piston pump have the advantages of strong bearing capacity and simple structure at the same time. 2. The connection of plunger assembly is designed as a rotatable spherical type, which effectively reduces the bending moment of the arc slider, and replaces the traditional spring and oil pump reset mechanism with a new reset mechanism, which makes the reset simple and reliable.
【學位授予單位】：武漢理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH322

【引證文獻】

相關博士學位論文 前1條

1 高鋒;飛機液壓系統(tǒng)泵—管路振動特性研究[D];浙江大學;2013年

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本文編號：1564189