一種電液比例減壓閥的設計

機械設計制造及其自動化論文，論文編號:JX1142  論文字數:10960.頁數:29

摘 要
 電液比例閥是閥內比例電磁鐵根據輸入的電壓信號產生相應動作，使工作閥閥芯產生位移，閥口尺寸發生改變并以此完成與輸入電壓成比例的壓力、流量輸出的元件。閥芯位移也可以以機械、液壓或電的形式進行反饋。由于電液比例閥具有形式種類多樣、容易組成使用電氣及計算機控制的各種電液系統、控制精度高、安裝使用靈活以及抗污染能力強等多方面優點，因此應用領域日益拓寬。它的發展程度也可從一個側面反映一個國家液壓工業技術水平，因而日益受到各國工業界的重視。
 本設計的課題是電液比例閥中的一類——3DRE比例減壓閥（三通電液比例減壓閥）。首先針對電液比例閥這個大范圍做了簡要的分析，包括其特點與分類、發展階段及其功能作用。然后再對電液比例減壓閥作了進一步詳細的研究設計，在各部分的結構、原理及性能參數進行詳細分析的基礎上，完成了功率級為二通插裝閥，先導級為電液比例溢流閥的電液比例減壓閥的結構設計。
 以下為個章節的簡單介紹：
 主要介紹了選題的背景和意義，以及研究的內容。
 主要介紹了電液比例閥的特點、分類極其發展狀況，其中還對比例放大器、比例電磁鐵、比例壓力閥作了簡單的介紹。
 的內容為減壓閥的工作原理以及性能分析。其中性能分析包括它的性能指標和數學模型的建立。
 為本設計中的主要內容，是對一種電液比例減壓閥的結構設計。包括了對先導閥、主閥、擋圈、彈簧、彈簧座、端蓋以及裝配圖的設計。
 關鍵詞：電液比例減壓閥   3DRE   三通
 
  
 Abstract
  Electro-hydraulic proportional valve is a proportional solenoid valve input voltage signal generated according to the corresponding movements to produce a shift in the work of the spool valve, valve port size is changed and thus the completion of the input voltage proportional to the pressure and flow output of the device.Spool displacement can also be mechanical, hydraulic or electrical feedback form.As the electro-hydraulic proportional valve is of the form diversity of species, easily composed using a variety of electrical and computer-controlled electro-hydraulic system, control of high precision, installation flexibility and the ability of anti-pollution and so many advantages, so applications become increasingly broadened.Its level of development can also be a reflection of a country's level of hydraulic industrial technology, thus increasing the importance attached by the countries in the industrial sector.  This design issue is the electro-hydraulic proportional valve of a class - 3DRE proportional pressure reducing valve (3 powered hydraulic proportional valve).First, electro-hydraulic proportional valve for the large-scale analysis of a brief, including its characteristics and classification, and function of development stage.And then on the electro-hydraulic proportional valve design was further detailed study, in the  structure, principle and detailed analysis Xingneng finished based on the power of Ji as the cartridge valve, electro-hydraulic pilot stage toproportional relief valve of the electrohydraulic proportional valve's structural design.  The following is a brief section:  The first chapter introduces the background and significance of topics, and content of the study.  The second chapter describes the characteristics of electro-hydraulic proportional valve, classification most development, which is also proportional amplifier, proportional solenoid, proportional pressure valve is briefly introduced.  The third chapter for the regulator works and performance analysis.Including performance analysis, including its performance indicators and mathematical model.  Chapter IV-based design of the main contents, is a kind of electro-hydraulic proportional pressure reducing valve of the structural design.Includes a pilot valve, main valve, ring, spring, spring seat, cover and assembly drawing design.
Key words: electro-hydraulic proportional valve; 3DRE;Three port

目錄
第一章 緒論 1
 1.1 選題背景與意義 1
 1.2 研究內容 1
第二章 電液比例閥 2
 2.1 電液比例閥概述 2
2.2 電液比例閥的特點與分類 2
 2.3 電液比例閥的發展 3
 2.4 比例放大器 4
 2.5 比例電磁鐵 5
 2.6 比例壓力閥的作用與分類 6
2.7 溢流閥的基本功能 7
 2.8 直接作用式比例溢流閥 7
第三章 減壓閥的工作原理與性能分析 8
3.1 工作原理 8
 3.2 性能指標 9
 3.3 數學模型 10
第四章 電液比例減壓閥的結構設計 13
4.1 先導閥的設計 13
 4.2 主閥體的設計 15
 4.3 擋圈的設計 20
4.4 彈簧的設計 21
 4.5 彈簧座的設計 22
 4.6 端蓋的設計 22
 4.7 裝配圖 23
 4.8 結構設計小結 23
總結 24
參考文獻 25
致謝 26