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摘 要
混凝土攪拌機是施工機械裝備中的重要設(shè)備,其產(chǎn)品質(zhì)量和生產(chǎn)效率直接影響著建筑施工質(zhì)量和建筑施工進度。強制式攪拌機是應(yīng)用最普遍、使用率最高的混凝土攪拌機。雙臥軸攪拌機是新型攪拌機型，因其攪拌質(zhì)量好，生產(chǎn)率高，被廣泛用于各種攪拌場合。
本畢業(yè)設(shè)計從攪拌的目的和機理出發(fā)。工作時,物料在葉片推動下沿螺旋面移動,由于兩軸的旋轉(zhuǎn)方向相反,兩軸間的物料產(chǎn)生擠壓、翻滾和揉搓,以達到攪拌混合效果。長期的生產(chǎn)實踐證明,通過對臥軸式攪拌機的葉片結(jié)構(gòu)和曲面形狀進行合理的布置和設(shè)計，混凝土的質(zhì)量和生產(chǎn)效率會有很大的提高。
結(jié)合三種葉片的優(yōu)點，通過對他們進行有序、合理的布置，讓混凝土在有限的時間進行盡可能的攪拌。對它們曲面形狀進行理論分析和一些試驗，克服傳統(tǒng)攪拌機器的缺點，并注意到新型設(shè)計可能引起的新的問題。通過攪拌過程的分析，詳細闡述了各參數(shù)的設(shè)計，并結(jié)合理論分析，給出了結(jié)論和建議。
關(guān)鍵詞：混凝土攪拌機；雙臥軸； 改進型葉片
ABSTRACT
Concrete mixer is the key device of construction machinery and equipment. It has product quality and production efficiency, which direct impacts on the construction quality and progress of construction. Compulsory mixer is the most common and the highest utilization rate of concrete mixers。Double horizontal shaft mixer is a new-style mixer, which is widely used in many conditions because of the high mixing quality and productivity
This paper begins with the mechanism and purpose of mixing. The materials leaves along the spiral of mobile on the work. Because of the two axis of rotation opposite direction, the materials between the two axis produces extrusion rolling and scrubbing, in order to meet the stirring mixed effect. It has been proved in the long-term production, through the horizontal Coaxial mixer surface of the leaf structure and shape of a reasonable layout and design, concrete’s quality and production efficiency will be greatly improved
Combining with the advantages of three leafs, Concrete is going to mix as much as possible in the limited time through their orderly, rational layout. I do some theoretical analysis and a number of tests for the leaf-surface’s shape. Though the new design test, it overcomes shortcomings of traditional mixer, and notes that the new design may cause new problems. Though the theoretical analysis of the mixing process and concretely explicating the parametric design .Finally, it gives conclusions and suggestions
Key words: concrete mixer; double horizontal shaft; improved blade
目 錄
前言………………………………………………………………………………1
1 總述……………………………………………………………………………3
1.1 攪拌的作用 ……………………………………………………………3
1.1.1 混凝土的組成 ……………………………………………………3
1.1.2 攪拌的任務(wù) ………………………………………………………3
1.1.3合理的攪拌機理 …………………………………………………3
1.2 混凝土攪拌機的類型 …………………………………………………4
1.3 國內(nèi)外混凝土攪拌機的發(fā)展?fàn)顩r ……………………………………6
1.4 本文的內(nèi)容和方法 ……………………………………………………7
2 總體設(shè)計方案確定及動力元件選擇…………………………………………8
2.1 總體設(shè)計方案 …………………………………………………………8
2.2 電動機的選型 …………………………………………………………8
2.3 減速器的選型 …………………………………………………………9
2.4 聯(lián)軸器的選擇與計算…………………………………………………10
3 葉片的設(shè)計與計算 …………………………………………………………11
3.1 原有葉片的布置………………………………………………………11
3.2 設(shè)計葉片的布置………………………………………………………13
3.2.1葉片的布置………………………………………………………14
3.2.2 裹軸現(xiàn)象…………………………………………………………16
3.3 葉片的主要參數(shù)………………………………………………………17
3.3.1輸送葉片主要參數(shù)的設(shè)計………………………………………17
3.3.2 主軸轉(zhuǎn)速的確定…………………………………………………18
3.4 螺旋葉片的加工………………………………………………………24
3.4.1 葉片螺旋面的成形………………………………………………24
3.4.2坯料形狀的選擇…………………………………………………24
3.4.3 整圓坯料尺寸的確定……………………………………………24
3.4.4 壓模主要尺寸的確定……………………………………………26
3.5 螺旋葉片的制造工藝…………………………………………………27
3.5 螺旋葉片的校核………………………………………………………27
4 軸的設(shè)計與計算 ……………………………………………………………35
4.1 左軸的校核……………………………………………………………35
4.1.1 初步估算軸的直徑………………………………………………35
4.1.2 軸的結(jié)構(gòu)設(shè)計……………………………………………………36
4.1.3 左軸加工工藝過程卡……………………………………………36
4.1.4 軸承的校核………………………………………………………37
4.1.5軸的校核…………………………………………………………39
4.2 鍵的校核………………………………………………………………40
4.3 銷軸的校核……………………………………………………………41
4.4 右軸的校核……………………………………………………………42
4.4.1初步估算軸的直徑………………………………………………42
4.4.2 軸的結(jié)構(gòu)設(shè)計……………………………………………………43
4.4.3 軸的強度校核……………………………………………………44
4.4.4 軸承的校核………………………………………………………45
4.5 攪拌軸筒的校核………………………………………………………46
結(jié)論 ……………………………………………………………………………48
致謝 ……………………………………………………………………………49
參考文獻 ………………………………………………………………………50
附錄：……………………………………………………………………………52
外文資料與中文翻譯 ……………………………………………………52