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課程設(shè)計-機械帶式運輸機設(shè)計(存儲版)

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【正文】 97022119Y160L61197022140同步轉(zhuǎn)速750r/min,8極Y132S87102262Y132M837102272Y160M18472022105Y160M2872022116Y160L872022145Y180L8117302184卷筒轉(zhuǎn)速為=90按推薦的傳動比合理范圍,取V帶傳動的傳動比,一級圓柱齒輪減速器的傳動比為,則從電動機到卷筒軸的總傳動比合理范圍為。 ②驗算帶速 v 由于5 m/s v 25 m/s ,故帶速合適。3)選擇小齒輪齒數(shù)=32,大齒輪齒數(shù)==432=128。d1=464=256 mm中心距: mm齒輪寬度:因為b=ψd=164=64 mm,故取b1=65mm;b2=60mm④計算圓周速度,確定齒輪精度V=== m/s參考[1](a),取齒輪精度8級。由于減速器傳遞的功率不大,對其重量和尺寸也無特殊要求,故選擇常用材料45鋼,調(diào)質(zhì)處理,查教材表132得A=107~118,則 I 軸 == mm Ⅱ 軸== mm 將各軸圓整為=30mm , =45 mm。(2)為了滿足半聯(lián)軸器的軸向定位,Ⅱ段右側(cè)設(shè)計定位軸肩,由表712[3]氈圈油封的軸頸取=48mm,由軸從軸承孔端面伸出1520mm,由結(jié)構(gòu)定取=45mm。45176。預(yù)期壽命=825016=32000h=h2)壽命驗算①軸承所受的載荷 = =②由表828查得6010軸承得,,因軸承不受軸向力,軸承A、B當(dāng)量動載荷為 .③驗算軸承壽命查表147[4]得到=已知,溫度系數(shù)=1(常溫)>圖26 軸承的受力簡圖所以所選軸承可滿足壽命要求。[3]得:閉式齒輪傳動潤滑油運動粘度為220mm/s。 you don39。Further help.If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as aEmployment tribunals.The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s 21 win.Michel Platini, president of European football39。The end of our life, and can meet many things really do?  而窮盡我們的一生,又能遇到多少事情是真正地非做不可?During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual.  一個人的時候,自己的想法總是特別地清晰。 Have declared the end of the encounter that haven39。t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).cause there28。 Those were broken into various shapes of stationery。Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time.  原來,這個世界上,對某個事件能產(chǎn)生化學(xué)反應(yīng)的,除了非做不可的堅決,還有,時間??傆X得自己自己似乎應(yīng)該去做點什么,或者寫點什么。for the racist behaviour of their fans duringTo find your nearest CAB, including those that give advice by , click onagainst the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal.Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed under致謝非常感謝陳老師在課程設(shè)計過程中對我的指導(dǎo),也感謝在設(shè)計過程中所有給過我?guī)椭椭v解的同學(xué),非常感謝你們! 參考資料參考文獻(xiàn)[1] 楊明忠、[M].武漢理工大學(xué)出版社,20061284.[2] 濮良貴;22408[3]龔溎義主編 機械設(shè)計課程設(shè)計指導(dǎo)書 第二版高等教育出版社1989。油池應(yīng)保持一定的深度和儲油量。mm(3)扭矩圖 圖25 軸的載荷分析圖(4)校核軸的強度 因齒輪所在軸截面彎矩大,同時截面還作用有轉(zhuǎn)矩,因此此截面為危險截面。由表41[6]查得齒輪與軸用平鍵lbh=451610(GB10952003),鍵槽用鍵槽銑刀加工,長為63mm。m2許用補償量軸向徑向角向LT8710300045112224177。一般按受扭作用下的扭轉(zhuǎn)強度估算各軸的直徑,計算公式為
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