WY6 液壓挖掘機(jī)液壓系統(tǒng)設(shè)計(jì)摘 要本次畢業(yè)設(shè)計(jì)課題是 WY6 液壓挖掘機(jī)液壓系統(tǒng)設(shè)計(jì)。WY6 挖掘機(jī)由多個(gè)系統(tǒng)組成，包括液壓系統(tǒng)，傳動系統(tǒng)，操縱系統(tǒng)，工作裝置，底架，轉(zhuǎn)臺，油箱，發(fā)動機(jī)安裝等。本人的設(shè)計(jì)主要致力于分析和設(shè)計(jì) WY6 液壓挖掘機(jī)的液壓系統(tǒng)。本課題選擇了國內(nèi)的質(zhì)量和技術(shù)性能都接近設(shè)計(jì)要求的 WY6 挖掘機(jī)作為基型，并在此基礎(chǔ)上研究了國內(nèi)和國外的其它先進(jìn)機(jī)型，設(shè)計(jì)出我們挖掘機(jī)的液壓系統(tǒng)方案圖，總體裝配圖以及相應(yīng)的部件圖和零件圖。圖紙基本采用 Auto CAD 二維軟件。本液壓挖掘機(jī)的優(yōu)點(diǎn)是采用伺服先導(dǎo)操縱系統(tǒng)，造型美觀，具備挖掘，抓物，鉆孔，推土，清溝和破碎等功能。平臺可 360°旋轉(zhuǎn)，性能可靠，操作舒適，可廣泛應(yīng)用于建筑，市政，供水，供氣，供電農(nóng)林建設(shè)等工程。關(guān)鍵詞: 液壓挖掘機(jī) ，液壓系統(tǒng)，Auto CAD 繪圖1THE DESIGN OF WY6 HYDRAULIC EXCAVATOR’S HYDRAULIC SYSTEMABSTRACTThe name of this graduated task is “The design of WY6 hydraulic excavator’s hydraulic system”. WY6 hydraulic excavator includes several systems, for example, hydraulic system, transmission system, control system, task equipment, bottom, frame rotate, desk gasoline tank, setting of engine and so on. My task is to analyze and design the hydraulic system of the WY6 hydraulic excavator.This task chooses the domestic excavator whose quality and character is most similar to our request as the basic type, further study the overseas advanced type. Then I designed projects of hydraulic system of our excavator, collectivity assemblage drawing and interrelated parts drawing, accessory drawing. All the blueprints are drawn by AutoCAD. The strong point of this hydraulic excavator is used servo forerunner control system. It has beautiful sculpt. Provided with the function of excavating, grappling, drilling, pushing, cleaning channel and crashing etc. 360°rotatable plat , good quality, controlling comfortable, be widely used in construction, supply water gas and city planning.Key words: Hydraulic excavator，Hydraulic system ，Auto CAD drawing目 錄2前 言 .1第 1 章 挖掘機(jī)簡介 .21.1 WY6 挖掘機(jī)的功能和結(jié)構(gòu) 21.2 WY6 主要技術(shù)參數(shù),整機(jī)技術(shù)要求及主要部件特點(diǎn) .31.2.1 主要技術(shù)參數(shù) 31.2.2 整機(jī)技術(shù)要求 41.2.3 主要部件結(jié)構(gòu)特點(diǎn) 41.3 挖掘機(jī)簡史及國內(nèi)外發(fā)展情況 .51.3.1 挖掘機(jī)簡史 51.3.2 國外挖掘機(jī)目前水平及發(fā)展動向 61.3.3 國內(nèi)挖掘機(jī)目前發(fā)展水平及狀況 8第 2 章 液壓系統(tǒng)分析與設(shè)計(jì) .122.1 設(shè)計(jì)該挖掘機(jī)的要求和采用的液壓件 .122.2 液壓系統(tǒng)分析 .122.2.1 挖掘機(jī)的液壓系統(tǒng) 122.2.2 本機(jī)技術(shù)要求 142.2.3 本機(jī)液壓系統(tǒng)結(jié)構(gòu)特點(diǎn) 142.2.4 液壓系統(tǒng)圖的擬定 15第 3 章 WY6 液壓系統(tǒng)的計(jì)算 .173.1 液壓系統(tǒng)參數(shù) .173.2 油缸計(jì)算 .1933.2.1 油缸基本參數(shù) 193.2.2 油缸工作能力 203.2.3 油缸運(yùn)動計(jì)算 203.2.4 油缸穩(wěn)定性計(jì)算 213.2.5 油缸鉸點(diǎn)比壓 223.3 管路流速計(jì)算 .223.3.1 壓力管路 223.3.2 回油管路 233.3.3 吸油管路 233.4 熱平衡計(jì)算 .233.4.1 發(fā)熱量計(jì)算 233.4.2 散熱計(jì)算 273.4.3 油箱散熱量 H?和所需冷卻器散熱面積 A .283.5 生產(chǎn)率和循環(huán)時(shí)間計(jì)算 .293.5.1 理論生產(chǎn)率計(jì)算 293.5.2 作業(yè)循環(huán)時(shí)間 T 的計(jì)算 .303.6 回轉(zhuǎn)裝置轉(zhuǎn)速度及回轉(zhuǎn)力矩計(jì)算313.7 牽引力及行走速度計(jì)算 .323.8 驅(qū)動裝置牽引力計(jì)算 .333.9 功率計(jì)算 .34結(jié) 論 .35謝 辭 .364參考文獻(xiàn) .37附 錄 .37外文資料翻譯 .38