【正文】 業(yè)設(shè)計(jì)（論文）題目： 農(nóng)用翻斗車的結(jié)構(gòu)設(shè)計(jì)和液壓系統(tǒng)設(shè)計(jì) 注：成績(jī)?cè)u(píng)定由指導(dǎo)教師、評(píng)閱教師和答辯組分別給分(以百分記 )，最后按“優(yōu)(90100)”、“良(8089)”、“中 (7079)”、“及格 (6069)”、“不及格 (60 以下 )”評(píng)定等級(jí)。其中， 指導(dǎo)教師評(píng)定成績(jī)占 40%，評(píng)閱人評(píng)定成績(jī)占 20%，答辯組評(píng)定成績(jī)占 40%。 成績(jī)類別 成績(jī)?cè)u(píng)定 Ⅰ指導(dǎo)教 師評(píng)定成績(jī) Ⅱ評(píng)閱人評(píng)定成績(jī) Ⅲ答辯組評(píng)定成績(jī) 總評(píng)成績(jī) Ⅰ 40%+Ⅱ 20%+Ⅲ 40% 評(píng)定等級(jí) 畢業(yè)設(shè)計(jì)（論文） 1 摘 要 翻斗車 是工程機(jī)械的主要機(jī)種之一，廣泛用于建筑、礦山、水電、橋梁、鐵路、公 路、港口、碼頭等國(guó)民經(jīng)濟(jì)各部門。 本文中參閱了大量的土方機(jī)械的設(shè)計(jì)參考書，其中大多數(shù)是有關(guān)翻斗車方面的，有的是工作裝置單一構(gòu)件的設(shè)計(jì)，有的則是整個(gè)工作裝置的設(shè)計(jì)，并且有許多有關(guān)工作裝置優(yōu)化設(shè)計(jì)方面，各參考所涉及到的翻斗車雖然型號(hào)不同，研究的方法也有差異，但綜合起來基本上也概述了現(xiàn)行的設(shè)計(jì)方法。 國(guó)外 翻斗車 發(fā)展迅速，而我國(guó) 翻斗車 在設(shè)計(jì)上存在很多問題，其中主要集中在可靠性、結(jié)構(gòu)設(shè)計(jì)強(qiáng)度等方面。 而工作裝置對(duì)于翻斗車來說又是重中之重，所以工作裝置的設(shè)計(jì)好壞直接影響到翻斗車的使用壽命以及工作效率等。雖然現(xiàn)在市場(chǎng)上的翻斗車 已經(jīng)日趨成熟，但對(duì)其進(jìn)行改進(jìn)設(shè)計(jì)仍有非常重要的意義，尤其是翻斗車的工作裝置。 輪式翻斗車在作業(yè)時(shí)，靠改變液壓缸的長(zhǎng)度來使鏟斗獲得所要求的收斗角和卸料角。機(jī)構(gòu)中各桿件長(zhǎng)度及其結(jié)構(gòu)參數(shù)確定后，需要對(duì)該機(jī)構(gòu)作某些特定計(jì)算，以判斷機(jī)構(gòu)設(shè)計(jì)的正確性。在工作循環(huán)中速度與加速度變化合理；油缸活塞行程為最佳值；工作裝置運(yùn)動(dòng)平穩(wěn)、無干涉、無死點(diǎn)、無自鎖；動(dòng)臂從最底位置到最大卸載高度的舉升過程中，保證鏟斗中物料不灑落；在卸載后，動(dòng)臂下放至鏟掘位置鏟斗能自動(dòng)放平。 關(guān)鍵詞 : 工程機(jī)械，翻斗車，工作裝置 畢業(yè)設(shè)計(jì)（論文） 2 Abstract The loader is one of the main kind of the engineering machinery, used in every department of national economy such as the building , mine , water and electricity , bridge , railway , highway , port , quay extensively. In this article has referred the massive folk recipes machinery design reference book, majority is the related car loader aspect, some are works the equipment sole ponent design, some then is the entire work installment design, and has many related work installments optimization design aspect, each reference involves to the car loader although the model is different, the research method also has the difference, but synthesized basically has also outlined the present design method. The overseas loader development is rapid, but our country car loader has very many problems in the design, mainly concentrates in aspect and so on reliable, structural design intensity. But works the installment regarding the loader to say also is extremely important, therefore the work installment design is good and bad affects directly the car loader service life as well as the working efficiency and so on . Although in the present market car loader already day by day was mature, but carried on the improvement design to it still to have the extremely vital significance, in particular loader work installment. Loading the machine work equips of turn the container six connect pole anization is from press with liquid an urn of, the container mutually connection of two four connect the pole anization bine. A type loads the machine at homework, is pressed by the liquid of changes an urn lengths to makes the container acquired requests of accept the Cape of the container with unload to anticipate the Cape. Each pole in inside in anization a length and its construction parameter certain empress, need to make the some and particular calculation to that anization, the accuracy that to judge the anization the design. In worked circulation the speed changes with acceleration the reasonable。 The oil a piston route of travel is the best value。 The work equips the sport steady, have no to interfere with, have no the dead center and have no from the lock。 Move the arm from most the bottom position arrives the biggest unloading to raise to rise the process inside highly, guaranteeing the container the inside the material do not spread to fall。 After unloading, move the arm descend to put to the container to dig the position container can put automatically even. Key words: Construction Machine, Wheel Loaders , Work Equips 畢業(yè)設(shè)計(jì)（論文） 3 目錄 摘 要 ....................................................................... 1 Abstract .................................................................... 2 1 概述 ..................................................................... 5 本課題研究背景 ..................................................... 5 國(guó)外的研究現(xiàn)狀 ..................................................... 5 2 翻斗車的機(jī)構(gòu)方案設(shè)計(jì) ..................................................... 7 翻斗車的分類 ....................................................... 7 翻斗車的組成 ....................................................... 7 農(nóng)用翻斗車的工作原理 ................................................ 8 整體方案的構(gòu)思與選 擇 ............................................... 9 翻斗車設(shè)計(jì)原則 ................................................. 9 方案的確定 ..................................................... 9 3 翻斗車的總體設(shè)計(jì)和校核 .................................................. 10 履帶行走底座的設(shè)計(jì) .................................................. 10 行駛速度計(jì)算 .................................................. 10 爬坡能力計(jì)算 .................................................. 10 行走裝置的牽引力計(jì)算 .......................................... 11 驅(qū)動(dòng)輪主要參數(shù)的確定 .......................................... 13 驅(qū)動(dòng)輪鍵的選擇與校核 .......................................... 14 張緊軸的設(shè)計(jì)與校核 ............................................ 15 軸的參數(shù)確定 .................................................. 16 張緊軸的校核 .................................................. 17 支撐輪的計(jì)算和校核 .................................................. 19 支撐輪的結(jié)構(gòu)形式和工作原理 .................................... 19 支撐輪的的機(jī)構(gòu)設(shè)計(jì) ............................................ 20 支撐輪的強(qiáng)度 驗(yàn)算 .............................................. 21 畢業(yè)設(shè)計(jì)（論文） 4 支撐輪滑動(dòng)軸承設(shè)計(jì)與校核 ...................................... 21 支撐輪軸的驗(yàn)算 ................................................ 23 鏟斗的設(shè)計(jì)計(jì)算 ...................................................... 25 設(shè)計(jì)要求 ...................................................... 25 鏟斗的基本參數(shù)的確定 .......................................... 25 翻斗的結(jié)構(gòu)設(shè)計(jì) ...................................................... 28 液壓系統(tǒng)和液壓設(shè)備的選擇計(jì)算 ....................................... 29 液壓裝置結(jié)構(gòu)設(shè)計(jì)包括 .......................................... 29 液壓裝置設(shè)計(jì)要求 ................................