【正文】 為 40mm,軸承型號為 7008C，b 1為 35mm2） 低速級小齒輪軸段，按與齒輪的裝配關(guān)系定 d2為 42mm，b 2為 。 求軸上的載荷:n 1．求垂直面的支承反力 NlldFdFlFararv )(31321 ??????? Nvrv ??? 2．求水平面的支承反力 )(32131 ???? Ntt .32??3．繪垂直面的彎矩圖 mlFMva???4．繪水平面的彎矩圖 NlHa ??.51 mNdFMaHa ???????? 39。 ???????軸向力 軸的結(jié)構(gòu)設(shè)計(jì): 擬定軸上零件的裝配方案 i. 輸出軸的最小直徑顯然是安裝聯(lián)軸器處軸的直徑 （如上圖） ，為了使所選的軸直d1徑 與聯(lián)軸器的孔徑相適應(yīng)，故需同時(shí)選取聯(lián)軸器的型號。viii. 滾動(dòng)軸承段同 3 相同，d 7為 55mm，b 7為 。mbLl16284321???][1540221 ppMPahldT??? 故合格 高速軸鍵選擇：中間軸轉(zhuǎn)矩 mNT??查表 1010 查得許用應(yīng)力 =100～120Mpa，取 =100Mpa， ??p???p?與帶輪聯(lián)接處鍵為鍵 508?AmLhb5078?? 高速軸鍵校核：鍵工作長度 。C7206?5??md30D62?mB161．先計(jì)算軸承載荷、內(nèi)部軸向力 NFHvr .39711? r 242 ? a ???? 則軸承 2 為壓緊端 NFaa01 軸承 1 為放松端 s7 2 的當(dāng)量動(dòng)載荷，由表 1611 查得 68.?e Fra? eFra?查表 1611 得 沈陽工程學(xué)院課程設(shè)計(jì) 31 NFYXPar ?????? r 64222 Lh今 故應(yīng)以軸承 2 的徑向當(dāng)量動(dòng)載荷 P2為計(jì)算依據(jù)12P?受中等沖擊載荷 查表 169 得 ， 工作溫度正常 查表 168 得1.?pf3? 1?tfhLh57608??：軸承徑向基本額定動(dòng)載荷 NCr2則 hPfnprth 8745)(60143)(6013????hL?故所選 7206C 軸承適合八、連軸器的選擇由于凸緣聯(lián)軸器德結(jié)構(gòu)簡單，使用方便，可傳遞的轉(zhuǎn)矩較大，等優(yōu)點(diǎn)，且常用于載荷較平穩(wěn)的兩軸連接首先考慮此聯(lián)軸器聯(lián)軸器的設(shè)計(jì)計(jì)算由于裝置用于聯(lián)軸器傳動(dòng)，原動(dòng)機(jī)為電動(dòng)機(jī)，所以工作情況系數(shù)為 ，?AK計(jì)算轉(zhuǎn)矩為 mNTca ???查手冊選用彈性柱銷聯(lián)軸器 LX4其主要參數(shù)如下：公稱轉(zhuǎn)矩 NTn??250軸孔直徑 md1半聯(lián)軸器與軸配合的轂孔長度 L=112mm.沈陽工程學(xué)院課程設(shè)計(jì) 32 九、潤滑與密封 齒輪的潤滑采用浸油潤滑，浸油高度約為低速級大齒輪的一個(gè)齒高，取為 10mm。軸承端蓋結(jié)構(gòu)設(shè)計(jì)：材料 HT150高軸承 7206C D=62mm, d=30mm mDdedm50)4~2(?????沈陽工程學(xué)院課程設(shè)計(jì) 33 透蓋 mDdedm4)~2(?????中軸承及悶蓋7008C,D=68mm,d3=10mm,mDdedd73)4~2(??????低軸承 7206C D=62mm,d3=10mm，mDded60)4~2(?????透蓋 mDded60)4~2(?????沈陽工程學(xué)院課程設(shè)計(jì) 34 十、減速器附件設(shè)計(jì)（1）窺視孔及其視孔蓋 為了檢查傳動(dòng)零件的嚙合情況、接觸斑點(diǎn)、側(cè)隙，并向箱體內(nèi)注入潤滑油，應(yīng)在箱體的適當(dāng)位置設(shè)置窺視孔。（2）通氣器 減速器工作時(shí)，箱體內(nèi)溫度升高，氣體膨脹，壓力增大，為使箱內(nèi)受熱膨脹的空氣能自由排除，以保持箱體內(nèi)外壓力平衡，不致使?jié)櫥脱胤窒涿婊蜉S伸密封件等縫隙滲漏，在箱體頂部裝設(shè)通氣器。圖中采用的是兩個(gè)定位圓錐銷，安置在箱體縱向兩側(cè)連接凸緣上。（7）啟蓋螺釘 為了加強(qiáng)密封效果，通常在裝配時(shí)于箱體剖分面上涂以水玻璃或密封膠，因而在拆卸時(shí)往往因膠結(jié)緊難于開箱。（8）起吊裝置 圖中箱蓋裝有兩個(gè)吊環(huán)，用于吊起箱蓋；箱座兩端的凸緣下面鑄出四個(gè)吊耳，用于吊運(yùn)整臺(tái)減速器。作為小組長，就應(yīng)該積極些，所以我很快就開始組織大家進(jìn)入狀態(tài)，可是真正進(jìn)行時(shí)，我們才發(fā)現(xiàn)其實(shí)并不是我們想象的那么簡單，先要進(jìn)行電動(dòng)機(jī)的選擇，然后根據(jù)計(jì)算出的功率和機(jī)械效率等問題選取 V 帶，再計(jì)算齒輪、軸，選擇軸承、螺栓，這些東西都是要進(jìn)行計(jì)算后才可以選擇的，而并非根據(jù)自己的心情瞎選！計(jì)算過程也遇到了很多問題，有些我們大家要一起研究討論，然后選擇一個(gè)合適的結(jié)果，有些要請教其他組的同學(xué)或者問老師，在老師耐心的指導(dǎo)和講解以及同學(xué)們的熱心幫助下，我們終于艱難的完成了設(shè)計(jì)部分，可這材質(zhì)是一個(gè)剛剛的開始，然后要進(jìn)行的是校核，看看自己的設(shè)計(jì)是否符合規(guī)定，大家又是一頓埋頭苦算，發(fā)現(xiàn)有不合格的地方就要重新設(shè)計(jì)計(jì)算，雖然發(fā)現(xiàn)了一些地方強(qiáng)度不夠，但是在經(jīng)過重新設(shè)計(jì)計(jì)算，都解決了。最后沈陽工程學(xué)院課程設(shè)計(jì) 36 終于完成了設(shè)計(jì)的主題部分。沈陽工程學(xué)院課程設(shè)計(jì) 37 g an employment tribunal claimEmployment tribunals sort out disagreements between employers and employees.You may need to make a claim to an employment tribunal if:? you don39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB.For more information about making a claim to an employment tribunal, see Employment tribunals.The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s about how he felt and I would like to speak to him first to find out what his experience was.Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA.Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。二十年的人生軌跡深深淺淺，突然就感覺到有些事情，非做不可了。 Then in high school, think don39。A person39。嫌惡過自己的怯懦，最終卻發(fā)現(xiàn)有很多緣分，有很多錯(cuò)過，好像冥冥之中真的已經(jīng)注定。 From the corner at the beginning of deep friendship。Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence.The supersonic descent could happen as early as Sunda.The weatheThe balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39