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機(jī)械工程及其自動(dòng)化專業(yè)外文資料翻譯--流體傳動(dòng)(留存版)

  

【正文】 器主動(dòng)盤與發(fā)動(dòng)機(jī)相聯(lián),從動(dòng)盤與風(fēng)扇相聯(lián),工作液體為粘度較大的硅油。 But lubricant sealed perspective, the viscosity can not be too low. Provide lubrication and therefore should meet the requirements of sealed premise as a lowviscosity liquid to improve hydraulic ponents transmission efficiency. Wen Xing Nien also called liquid than for the hightemperature or lowtemperature, and still maintain an effective lubricant sealed. Secondly. A greater emphasis on the hydraulic ponents for the moment and the power transmission and liquid working for the redirect, it is liquiddegrees the higher the better. Thirdly. The performance can have a stable bubble, aging and sedimentation. Fourthly. Suanzhi sealed pieces to be neutral to low, and a good patibility, not dwell inflation, not dissolved the noncorrosive metal. Fifthly. A higher flash point and lower congeal point hydraulic ponents work Youwen change significantly, sometimes up to 160 degrees, and therefore require flash point higher than 180 degrees, and congeal point lower than 20 degrees, lowtemperature environment for the benefit of the startup of hydraulic ponents. Sixthly. A good lubricant performance liquid sufficient greasiness to the good parts in the surface material, a good lubricant. At present, and hydraulic transmission applications work more liquid types, among all oilbased products, has used the water or other liquid Nanran (coal mine explosion and fire in defense applications). Domestic hydraulic ponents monly used 6th hydraulic transmission oil (also useful 8th hydraulic transmission oil), and sometimes to 22 turbine fuel substitution. Diesel oil is dedicated to the life of not less than 2,000 hours and for the initial operation of new equipment installed oil after 100 hours and 500 hours of the first, second formula, can still be used after the filter. Is one of the following situations, the need to replace the new oil : Water content greater than %。生產(chǎn)廠有北京汽車機(jī)油泵廠和長(zhǎng)春第一汽車制造廠等單位。CST 系列產(chǎn)品由美國(guó)供應(yīng)專用液力傳動(dòng)油。 (2)有離好的潤(rùn)滑性能 (油性和極壓性 )。 目前,國(guó)內(nèi)外液力傳動(dòng)應(yīng)用的工作液體種類較多,除各種石油基產(chǎn)品外,也有采用清水或其它難燃液體的 (煤礦井下為防引燃爆炸而應(yīng)用 )。工程機(jī)械應(yīng)用較多,最大功率 700HP 左右,年產(chǎn)量約 7 萬(wàn)臺(tái)。 指導(dǎo)教師 評(píng)語(yǔ): 簽名: 年 月 日 注: 請(qǐng)將該封面與附件裝訂成冊(cè)。當(dāng)然,功率大的液力元件對(duì)液力傳動(dòng)油的要求較高。 酸值要低 對(duì)密封件應(yīng)是中性,有良好的相容性,不泡脹,不溶解,對(duì)金屬無(wú)腐蝕作用 。在液粘調(diào)速離合器轉(zhuǎn)速比從 0→1 變化過(guò)程中,片間摩擦狀況呈現(xiàn)出液體摩擦 →( 機(jī)械一液體 )混合摩擦 →( 純機(jī)械的 )邊界摩擦。另一類是美國(guó)道奇 (DODGE)公司的 CST 液粘調(diào)速裝置,它是在園柱齒輪 —— 行星輪系減速器差動(dòng)輪系的輸出端、與輸出軸 (連接太陽(yáng)輪 )并行輸出的大齒圈上裝有液粘調(diào)速離合器 (從動(dòng)摩擦片固定 ),起動(dòng)時(shí)液粘調(diào)速離合器處于分離工況 (空轉(zhuǎn) ),逐漸加大控制壓力,當(dāng)其傳遞扭矩與輸出軸承受扭矩相等時(shí),輸出軸 (帶負(fù)載 )開(kāi)始轉(zhuǎn)動(dòng),繼續(xù)增大控制壓力直至接合工況,則輸出軸承擔(dān)全部動(dòng)力的輸出。 硅油的物理性能取決于聚合物的分子結(jié)構(gòu),如分子量、有機(jī)基因的類型和數(shù)量、支鏈的位置及長(zhǎng)短等。 A high lipid intake or Suanzhi。反之,當(dāng)發(fā)動(dòng)機(jī)冷卻水溫度高時(shí),則風(fēng)扇轉(zhuǎn)速高,提高對(duì)發(fā)動(dòng)機(jī)的冷卻效果。 液粘調(diào)速離合器同調(diào)速型液力偶合器一樣,均是 在驅(qū)動(dòng)電機(jī)的轉(zhuǎn)速向下調(diào)節(jié),且在低速時(shí)功率小,效率低。當(dāng)前應(yīng)用較多的是液粘調(diào)速離合器、液粘調(diào)速裝置和硅油風(fēng)扇離合器。應(yīng)引起人們的重視,展開(kāi)廣泛深入的研究。液力傳動(dòng)油在工作腔中被泵輪渦輪攪動(dòng),使液流獲得動(dòng)量矩增量,經(jīng)過(guò)導(dǎo)輪調(diào)轉(zhuǎn)液流方向后沖入渦輪,釋放動(dòng)量矩 (動(dòng)能 )推動(dòng)渦輪帶動(dòng)工作機(jī)旋轉(zhuǎn)做功。液力變矩器的基本構(gòu)件是泵輪、渦輪和導(dǎo)輪,它們均是具有空間 (彎曲 )葉片的工作輪,按相關(guān)順序排列構(gòu)成工作腔。液力傳動(dòng)油是一個(gè)復(fù)雜而需專門研究的課題,它直接關(guān)系到液力元件的可靠性、傳動(dòng)效率和使用壽命。另一類是運(yùn)行中油膜厚度是可變的液粘傳動(dòng),這類液粘傳動(dòng)產(chǎn)品包括有液粘調(diào)速離合器、液粘制動(dòng)器、液粘測(cè)功機(jī)、液粘聯(lián)軸器、液粘調(diào)速裝置。傳遞功率最小 75kW,最大達(dá) 1100kW。當(dāng)發(fā)動(dòng)機(jī)的冷卻水溫度低時(shí),則氣流溫度低,感溫器使充油量小,油膜剪切面積小,傳動(dòng)力矩小,則風(fēng)扇轉(zhuǎn)速低,對(duì)發(fā)動(dòng)機(jī)的冷卻能力低。 Mechanical impurities (benzene Burong objects) to reach %。 在油膜厚度不變的液粘傳動(dòng)中使用硅油的主要原因,在于它具有高的粘度、良好的粘溫性能和較強(qiáng)的抗剪切能力。 CST 液粘調(diào)速裝置被稱作大型帶式輸送機(jī)的軟起動(dòng)系統(tǒng),在我國(guó)煤礦大型帶式輸送機(jī)上已有應(yīng)用。因此液粘調(diào)速離合器在調(diào)速過(guò)程中有分離工況、調(diào)速工況和接合工況。 要有較高的閃點(diǎn)和較低的凝點(diǎn)液力元件工作時(shí)油溫變化幅度很大,有時(shí)可達(dá)160℃ ,因此要求閃點(diǎn)要高于 180℃ ,而凝點(diǎn)要低 20℃ ,以利于低溫環(huán)境下液力元件的起動(dòng)。液力變矩器主要用于工程機(jī)械、石油機(jī)械和內(nèi)燃機(jī)車。 畢業(yè)設(shè)計(jì) (論文 )外文資料翻譯 學(xué)院 (系 ): 機(jī)械 工程學(xué)院 專 業(yè): 機(jī)械工程及其自動(dòng)化 姓 名: 學(xué) 號(hào): 外文出處: Transmission of Fluid 附 件: ; 。液力變矩器主
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