無(wú)摩擦球閥設(shè)計(jì)【含9張CAD圖紙+PDF圖】,含9張CAD圖紙+PDF圖,摩擦,球閥,設(shè)計(jì),CAD,圖紙,PDF 無(wú)摩擦球閥設(shè)計(jì) 摘要：該設(shè)計(jì)是為了改善傳統(tǒng)球閥的缺點(diǎn)而做的，傳統(tǒng)球閥的缺點(diǎn)是摩擦大、使用壽命短、密封性能不好。此設(shè)計(jì)可以根據(jù)流體沖蝕磨損、腐蝕程度和工作壓力來(lái)調(diào)整密封比壓。軌道式無(wú)摩擦球閥是一種新型的球閥，它利用閥桿頭部的斜面凸輪與導(dǎo)軌套螺旋槽的配合來(lái)實(shí)現(xiàn)球閥的無(wú)摩擦開(kāi)啟、關(guān)閉和金屬密封的新型閥門(mén)；所以設(shè)計(jì)中的關(guān)鍵問(wèn)題是要避免產(chǎn)生摩擦，密封要緊，最終達(dá)到高效率、高質(zhì)量、耐用性等要求。本論文研究對(duì)軌道式無(wú)摩擦球閥的運(yùn)動(dòng)和動(dòng)力分析方法，完成了球閥啟閉運(yùn)動(dòng)軌跡、球體運(yùn)動(dòng)空間以及主要零部件的受力分析設(shè)計(jì)。該球閥具有啟閉無(wú)磨損，關(guān)閉時(shí)壓力可調(diào)節(jié)和啟閉省力的優(yōu)點(diǎn)；克服了普通球閥因密封比壓大而使密封面容易磨損的缺點(diǎn)，延長(zhǎng)了球閥的使用壽命。 關(guān)鍵詞：無(wú)摩擦；球閥；軌道式；凸輪 Design of Non-Friction Ball Valve Abstract: The design is to improve the shortcomings of traditional ball valve , and the shortcomings of traditional ball valve is friction, short life, sealing performance bad. According to this design`s fluid erosion, corrosion and pressure then the pressure was adjust sealed .Orbit Non-Friction Ball Valve is a new type of valve and realizes non-friction switching and metal pressurization of the valve by cam mechanism.This paper researches the design of Orbit Non-Fraction Ball Valve’s move and the analysis of dynamically. The paper puts forward the kinetic analysis method of Orbit Non-Fraction Ball Valve, analysising the track and motion space of the conglobulation for switching etc, and bring forward rule of its configuration design, designing its assembling body and main parts. This valve has a series of advantage, such as non-friction, the adjusting of pressure and laborsaving when it switches .Its pressurization is different from the usual whose pressurization is easy to destroy, which overcome the fault of the usual valves. So it has a longer life-span. KeyWords: Orbit, Non-Friction, Ball Valve, Cam 目錄 第1章 引言 1 1.1課題來(lái)源 1 1.2選題目的和意義 1 1.3球閥的發(fā)展趨勢(shì) 2 1.4本文研究的主要內(nèi)容 2 第2章 主要結(jié)構(gòu)參數(shù) 4 2.1.軌道式無(wú)摩擦球閥技術(shù)要求 4 2.1.1技術(shù)參數(shù) 4 2.1.2技術(shù)要求 4 2.1.3型號(hào)及其含義 4 2.2主要結(jié)構(gòu)尺寸 4 2.2.1球體直徑 4 2.2.2密封面寬度及壓緊比壓 5 2.2.3密封比壓 6 2.2.4球閥結(jié)構(gòu)長(zhǎng)度及連接法蘭尺寸 6 第3章 運(yùn)動(dòng)軌跡設(shè)計(jì) 7 3.1球閥啟閉運(yùn)動(dòng)軌跡 7 3.1.1滾動(dòng)啟閉 7 3.1.2球閥擺動(dòng) 7 3.1.3凸輪的輪廓 8 3.2球閥下支承外形 10 3.2.1滾動(dòng)柱面與倒角半徑 10 3.2.2倒角中心點(diǎn)位置 11 3.3.3滾動(dòng)空間 12 第4章 結(jié)構(gòu)設(shè)計(jì)和計(jì)算 13 4.1閥桿機(jī)構(gòu)受力狀況 13 4.1.1球閥受力狀況 13 4.1.2閥桿支承反力與支承結(jié)構(gòu)型式選擇 14 4.1.3摩擦阻力扭矩 16 4.1.4閥桿承受的軸向力 18 4.2操作扭矩和手輪選擇 21 4.2.1操縱扭矩Mc 21 4.2.2徑D選擇 22 4.3零件設(shè)計(jì)與計(jì)算 22 4.3.1具有螺旋導(dǎo)軌槽襯套的主要結(jié)構(gòu)尺寸 22 4.3.2球閥銷(xiāo)軸接觸強(qiáng)度 23 4.3.3球閥下支承的接觸強(qiáng)度 24 第5章 工作能力校核 31 5.1工作壽命 31 5.2實(shí)際工作壓力的潛力估計(jì) 31 5.2.1閥體壁厚承壓能力 31 5.2.2閥體與閥蓋連接螺栓 33 5.2.3閥蓋連接法蘭承載能力 35 5.2.4閥桿頭部承載能力 37 5.3壽命和實(shí)際工作潛力估計(jì) 38 5.3.1壽命估計(jì) 38 5.3.2承壓能力估計(jì) 39 結(jié) 論 40 致 謝 41 參考文獻(xiàn) 42 4