【正文】 FP=KFP因此考慮在蝸輪蝸桿減速級前，再加一級斜齒圓柱齒輪減速。③材料選擇由《機(jī)械設(shè)計(jì)》表101選擇小齒輪材料為40Cr（調(diào)質(zhì)），硬度為280HBS；大齒輪材料為45鋼（調(diào)質(zhì)）硬度為240HBS，二者材料硬度差為40HBS④選小齒輪齒數(shù)z1=24，大齒輪齒數(shù)z2=i1z1=24= 取z2=115（2） 按齒面接觸強(qiáng)度設(shè)計(jì) ()式中：Kt——載荷系數(shù)；T1——小齒輪的轉(zhuǎn)矩；фd——齒寬系數(shù)；i——齒輪的傳動(dòng)比；ZH——區(qū)域系數(shù)；ZE——材料的彈性影響系數(shù)；——接觸疲勞壽命系數(shù)；①試選Kt=②由《機(jī)械設(shè)計(jì)》圖1030選區(qū)域系數(shù)ZH=③取β=14176。d1t=1= (mm) mnt=(d1tz1KHα（4）幾何尺寸計(jì)算①計(jì)算中心距 (mm) （） 將中心距圓整為290（mm）②按圓整后的中心距修正螺旋角 （）③計(jì)算大、小齒輪分度圓直徑 （mm） （） (mm)④計(jì)算齒輪寬度 b=фd（1）選擇蝸桿傳動(dòng)類型 根據(jù)GB/T100851988的推薦，采用漸開線蝸桿（ZI）（2）選擇材料蝸桿用45號鋼，因希望效率高些，耐磨性好些，故蝸桿螺旋齒面要求淬火，硬度為45~55HRC。傳動(dòng)中心距： ()式中： K——載荷系數(shù)； T2——作用在蝸輪上的轉(zhuǎn)矩； ZE——彈性影響系數(shù)； ZP——接觸系數(shù)；[σH]——接觸疲勞壽命系數(shù)；① 確定作用在蝸輪上的轉(zhuǎn)矩 Ⅲ軸（即減速器輸出軸）T3=(106Kβ（4）蝸桿與蝸輪的主要參數(shù)與幾何尺寸①蝸桿軸向齒距Pa=πm/2= (mm)②蝸輪查《機(jī)械設(shè)計(jì)手冊3》 z4=61；變位系數(shù)X4=+驗(yàn)算傳動(dòng)比 i2=z4/z3=61/1=61這時(shí)傳動(dòng)比誤差為（）/61≈=% 5%是允許的。)= 許用彎曲應(yīng)力[σF]=[σF]′類型選擇為了隔離振動(dòng)與沖擊，選用彈性套柱銷聯(lián)軸器載荷計(jì)算 公稱轉(zhuǎn)矩 由[機(jī)械設(shè)計(jì)]表141查得，故由式得計(jì)算轉(zhuǎn)矩為型號選擇從GB432385中查得TL13型彈性套柱銷聯(lián)軸器的許用轉(zhuǎn)矩為，許用最大轉(zhuǎn)速為，軸徑為120~170mm之間，故合用。D/2 （）=60=1044 (N鍵的工作長度，鍵與輪轂的接觸高度；由式可得： () 因此該鍵符合要求。因?yàn)? 所以因?yàn)? 所以 所以V面: 則 則 H面: 則 (1)查表A24得該圓錐滾子軸承型號為32226 e= Y= C=345000N(2)計(jì)算軸承軸向載荷 （）兩軸承的軸向力為: （）(3)求軸承當(dāng)量動(dòng)載荷和由得 （）根據(jù)表135得徑向載荷系數(shù)和軸向載荷系數(shù)對稱軸1 對稱軸2 因軸承運(yùn)轉(zhuǎn)中有中等沖擊載荷,由表136得 取 則 （）(4)驗(yàn)算軸承壽命:因?yàn)樗园摧S承1的受力大小驗(yàn)算 由表134查得，；根據(jù)軸承壽命公式求得軸承的壽命為： 故所選軸承滿足壽命要求1按扭轉(zhuǎn)條件校核: （）2按彎扭條件計(jì)算（1）做出軸的計(jì)算簡圖（2）做出彎矩圖（3）做出扭矩圖載荷 水平面H 垂直面V支反力F 。從應(yīng)力集中對軸的疲勞強(qiáng)度的影響來看，截面C處過盈配合引起的應(yīng)力集中最嚴(yán)重。因，經(jīng)插值后可查得 又由[機(jī)械設(shè)計(jì)]附圖31可得軸的敏性系數(shù)為 故有效應(yīng)力集中系數(shù)由[機(jī)械設(shè)計(jì)]附表34得由[機(jī)械設(shè)計(jì)]附圖32的尺寸系數(shù)；由[機(jī)械設(shè)計(jì)]附圖33的扭轉(zhuǎn)尺寸系數(shù)軸按磨削加工，由[機(jī)械設(shè)計(jì)]附圖34得表面質(zhì)量系數(shù)為軸未經(jīng)表面強(qiáng)化處理，即，則按式和得綜合系數(shù)為 （）又由[機(jī)械設(shè)計(jì)]167。由[機(jī)械設(shè)計(jì)]表151查得， 截面上由于軸肩而形成理論應(yīng)力集中系數(shù)和按附表32查取。因此，判定此軸滿足強(qiáng)度校核，是安全的。過濾器的算法公式為： ()式中：F為T時(shí)間周期內(nèi)的累積誤差的平均值；X為某時(shí)刻的進(jìn)水流量；Y為某時(shí)刻的出水流量?！鱂low3為20min中內(nèi)的累積流量差平均值與2s內(nèi)的累積流量差平均值的差值。在頂槍內(nèi)壁通有冷卻水。氣體通斷由PLC通過切斷閥進(jìn)行控制。出于從安全角度考慮，頂槍燃燒控制單元采用德國SMS MEVAC公司針對頂槍特性專門研制的基于硬邏輯方式的控制器，完全避免了軟邏輯帶來的危險(xiǎn)。（5）頂槍燃燒出現(xiàn)故障后，必須利用真空系統(tǒng)（真空室、真空泵）進(jìn)行吹掃，吹掃過程由噴射泵完成。（2）冷卻水流量高于認(rèn)定值的120%時(shí)，切斷氧氣、煤氣源，提槍到停放位。因此，從開始工作到發(fā)生故障階段即可靠度，從發(fā)生故障后進(jìn)行維修到正常工作階段即維修度。結(jié) 束 語氧槍是轉(zhuǎn)爐煉鋼過程中必不可少的設(shè)備，吹氧條件的好壞直接影響產(chǎn)品質(zhì)量和其生產(chǎn)能力。并通過設(shè)計(jì)說明書和排版熟練的掌握了OFFICE2003的各種操作技巧。 I have to slag under the bubble of oxygen gun at the vents direct p sound intensity。 τ for the time。 development environment including the development of expert systems and the necessary software tools and operating environment that is outside the exchange of software and hardware. One expert knowledge system is the core of the system. It is knowledge base, reasoning and a user interface three main ponents. For the guncontrol guns oxygen, the oxygengun gun knowledge are basically rulebased, all forms such as If a splash then lowered the gun in a description, the best way is to use a description of that law . According to the aforementioned converter noise theory, expert systems and existing converter automatic control system of bining to form the BOF lance guncontrol expert system, guiding a high degree of adjustment of oxygen gun. Lance gun expert knowledge base system is the use of oxygentank unit and its impact on dissolution of the noise intensity with the relationship between the development of production. In the knowledge base to ensure that at least a blowing process, determine the status of furnace, splash early warning, early warning and returned to stem the best of Java and other areas of knowledge. These elements are strong between the simultaneous existence of close ties and knowledge base of knowledge are major reserves of strength with the noise of the relationship between the situation. Knowledge Base recorded in different kinds of steel, iron smelting at the different ponents of the gunoperation process. Converter work through the process of recording, I BOF noise strong trend, as provided by the expert system blowing into the first stage to stage 2 of the methods and judgement in the decarbonization of oxygen in the course of the gun in a short period of time repeatedly submerged blowing And exposed the state judge blowing method. In the production of records when the furnace splash in the minimum noise and I happened to the stem, the maximum noise, in the process of blowing prevent splash back to dry and to provide control methods. To receive a higher optimization blowing process, dephosphorization speed, through the state to adjust the sound intensity oxygen decarburization gun position to ensure the rapid and dephosphorization to ensure that the gunin a more appropriate location. Reasoning, using experts in the field thinking the same methods and rules of the incident match the reasoning strategy, such a method of reasoning of the system can be used by the production structure in the knowledge base that flexibility in the use of knowledge. For the gunlance expert system, to consider and to prevent splash back to the stem, in no splash and back to dry on the basis of guncontrol will be in the best of Java near the curve. If a bad phenomenon, using the knowledge base to process, through the judgement of the incident with the knowledge of the rules to match the degree of oxygen gun action to adjust. Manmachine interface system through the network for data exchange, userfriendly data entry, surveillance, gun control oxygen converter process and equipment to the sce