船用廢氣燃燒臂設(shè)計

機(jī)械論文編號:JX418  包括設(shè)計圖,說明書字?jǐn)?shù):30668.頁數(shù):80
目錄
目錄 1
1．燃燒臂機(jī)構(gòu)的設(shè)計 2
1.1燃燒臂裝置的方案設(shè)計 2
1.2燃燒臂的選型和計算 3
1.2.1 燃燒臂的基本結(jié)構(gòu) 3
1.2.2水平支架的方案設(shè)計 3
1.2.3 水平支架的受力分析 3
1.2.4 水平支架的強度計算 4
1.3  垂直支架的方案設(shè)計 6
2 回轉(zhuǎn)機(jī)構(gòu)的設(shè)計 7
2.1  概述 7
2.1.1 回轉(zhuǎn)支承的型式與結(jié)構(gòu) 12
2.2 根據(jù)所知條件設(shè)立回轉(zhuǎn)方案 14
2.3船用廢氣燃燒臂的負(fù)荷分析 16
2.3.1  船用廢氣燃燒臂的外力分析 16
2.3.2 回轉(zhuǎn)摩擦阻力矩的計算 16
2.3.3 與回轉(zhuǎn)支承相配合的小齒輪的尺寸幾何計算 17
3.船用廢氣燃燒臂減速器的設(shè)計 18
3.1 電動機(jī)的選擇 18
3.1.1 選擇電動機(jī)類型 18
3.1.2選擇電動機(jī)容量 19
3.1.3傳動裝置的總傳動比及其分配 19
3.1.4 計算傳動裝置的運動和動力參數(shù) 20
3.2 傳動方案設(shè)計 21
3.2.1 確定傳動類型 21
3.2.2 總傳動比和合理分配各級傳動比 22
3.3齒輪傳動的設(shè)計與校核 23
3.3.1 輪齒的失效形式 24
3.3.2變位齒輪簡介 25
3.3.3 齒輪設(shè)計準(zhǔn)則 27
3.3.4 高-切變位弧齒錐齒輪傳動主要尺寸的確定 27
3.3.5高-切變位弧齒錐齒輪正交傳動的幾何計算 29
3.3.6 高-切變位弧齒錐齒輪接觸強度校核 32
3.4高變位斜齒輪傳動主要尺寸的確定 34
3.4.1高變位齒輪齒輪主要尺寸的初步確定 35
3.4.2高變位斜齒輪外嚙合傳動的幾何計算 36
3.4.3高變位斜齒輪接觸強度校核 37
3.5齒輪結(jié)構(gòu)形式的確定 38
3.5.1高-切變位弧齒錐齒輪結(jié)構(gòu)形式 38
3.5.2高變位斜齒輪結(jié)構(gòu)形式 39
3.6傳動軸的結(jié)構(gòu)設(shè)計與校核 39
3.6.1.輸入軸的設(shè)計 40
3.6.2中間軸的結(jié)構(gòu)設(shè)計 42
3.6.3輸出軸的結(jié)構(gòu)設(shè)計 44
3.7傳動軸的彎扭合成強度計算與疲勞強度校核 46
3.7.1傳動軸的受力分析 46
3.7.2軸的彎扭合成強度校核 47
3.7.3精確校核軸的疲勞強度 53
3.8軸承與鍵的校核 55
3.8.1單列圓錐滾子軸承的壽命校核 55
3.8.2A型平鍵的強度校核 56
3.9 軸系部件的結(jié)構(gòu)設(shè)計 57
3.9.1 軸承蓋的結(jié)構(gòu)設(shè)計 57
3.10箱體及附件的設(shè)計 59
3.11 減速器箱體的設(shè)計 59
3.11.1 油面位置及箱座高度的確定 61
3.11.2 油溝的結(jié)構(gòu)形式及尺寸 61
3.12減速器的附件 62
3.12.1 檢查孔與檢查孔蓋的設(shè)計 62
3.12.2 通氣器的結(jié)構(gòu)及尺寸 63
3.12.3 放油孔、螺塞和封油圈 64
3.12.4 油標(biāo)指示器 65
3.12.5 起吊裝置 65
3.12.6 定位銷 66
3.12.7 啟蓋螺釘 67
3.13減速器主要零件的加工工藝 68
3.13.1 零件圖樣分析 68
3.13.2 中間軸的機(jī)械加工工藝過程卡 68
4.船用廢氣燃燒臂其它部件的設(shè)計 69
4.1 排氣管的選擇 69
4.2 O形橡膠密封圈 70
參考文獻(xiàn) 71
結(jié)論 79

摘要
船用廢氣燃燒臂是一種用于排放輪船尾氣的一套裝備,其中燃燒臂為懸臂結(jié)構(gòu).在現(xiàn)有的燃燒臂過程中,一般采用船用吊機(jī)的設(shè)計方法所設(shè)計的結(jié)構(gòu)過于保守,使得結(jié)構(gòu)質(zhì)量偏大.燃燒臂結(jié)構(gòu)安全系數(shù)會過大,不僅導(dǎo)致材料浪費和成本增加,而且還會對整個船體的穩(wěn)定性不利.回面燃燒臂結(jié)構(gòu)需要進(jìn)行專門的設(shè)計.本文燃燒臂底座采用了專門用于回轉(zhuǎn)的回轉(zhuǎn)支承.
回轉(zhuǎn)支承裝置是近30年來發(fā)展起來的新型機(jī)器部件,它已從用子挖掘機(jī)和起重仇逐漸發(fā)展到用于其它機(jī)械。 回轉(zhuǎn)支承裝置近乎特大型的滾動軸承。它將機(jī)器的上部和下部連接起來，用以支承上部的重量和工作負(fù)荷，并使上部能相對于下部旋轉(zhuǎn)。本文對燃燒臂底座進(jìn)行了彎曲強度,剪切強度及抗擠壓強度的校核.
而其燃燒臂上部桁架機(jī)構(gòu)的設(shè)計比一般船用吊機(jī)要輕巧得多,對此燃燒臂結(jié)構(gòu)需要進(jìn)行單獨的強度計算.
由于所要設(shè)計的燃燒臂回轉(zhuǎn)速度僅為1/6(r/min),因此,為了考慮其使用效率只使用一個圓錐-圓柱減速度器,故,在此次設(shè)計中選用了直接帶減速裝置的凸緣安裝型式電動機(jī),此電動機(jī)不僅功率和輸出轉(zhuǎn)矩能滿足要求,而且其輸出轉(zhuǎn)速僅為25n/min.
在回轉(zhuǎn)速度低,功率大的燃燒臂裝置中,所要求的減速器軸需要很高的強度,因此通過參考一些比較權(quán)威的機(jī)械設(shè)計手冊之后,再通過強度校核,選用減速器的軸材料為20CrMn.
關(guān)鍵詞：回轉(zhuǎn)支承，圓錐-圓柱減速度器，

Abstract
Marine from a burning arm for the tail gas emissions set of vessels and equipment, including combustion for the cantilever arm structure. Arm of the existing combustion process, the general marine crane designed by the design of the structure was too conservative, making the quality of the structure Too large. Combustion arm structural safety factor would be too large, not only lead to waste and material cost increases, but also the stability of the entire hull negative. Back-burner arm of the need for specialized design. Combustion arm base paper used a special use Rotary in the rotary bearing.
Rotary support device is nearly 30 years ago to develop a new type of machine components, it has been used excavator and the lifting of hatred to the progressive development of other machinery for. Rotary supporting device near the large rolling bearings. The machine will link the upper and lower to the upper bearing the weight and work load, and the upper to the lower part of the rotation. In this paper, the base of a burning arm bending strength, shear strength and the strength of anti-extrusion check. Combustion arm of the Department and its agencies truss design than the general marine hanging confidential lightweight much, this burning need for a separate arm of the Strength calculation.
Because the design of the combustion rotary arm speed is only 1 / 6 (r / min), therefore, in order to consider only the use of its efficiency in the use of a cone - cylindrical cut speed, so that in this design selected directly with the slowdown in device Flange installation type motor, the motor not only power and torque output to meet demand, but its output speed is only 25 n / min.
Rotary in the low-speed, large power plant burning arm, the required reducer axis need a high intensity, some of the more authoritative reference by the mechanical design manual, to check through strength, the choice of reducer shaft material for 20 CrMn .
     Key words: slewing bearings, cone - cylindrical cut speed,