薄煤層采煤機總體方案畢業設計及截割減速器設計
摘要
薄煤層采煤機用于采高低于130mm的煤層。由于有些煤層的厚度太低普通采煤機難以進行正常開采，影響采煤的效率。對一些薄、厚煤層并存的煤礦,由于薄煤層開采速度緩慢,使其下部的中厚煤層長期得不到及時開采,以至影響工作面的正常接替,而有的就只能被迫丟失一些薄煤層資源。隨著大批煤礦中、厚煤層的資源開采比較多,使得資源越來越少,所以薄煤層的開采已列入日程。因此,研制適合的薄煤層采煤機,以適應不同的煤層結構,提高薄煤層采煤的工作效率是當務之急。
雖然薄煤層采煤機的型號、規格有許多,但它的各主要組成部分大同小異，合理選擇薄煤層采煤機的截割部的參數，可以改善其工作性能和減少采煤比能耗。選擇這個題目就是要進一步熟悉薄煤層采煤機各部分的工作原理，對其進行更好的改進，并對它的截割部減速器進行細致分析設計，使其耐用并且省時省力容易裝修，使其在工作中能夠有更好的經濟效益。對于現在使用較為廣泛的薄煤層采煤機的減速器中存在的錐齒輪，影響電動機的安放和使用壽命，針對此處進行改進。
關鍵詞：薄煤層采煤機；截割機構；減速器。
Abstract
For now the wider use of thin seam Shearer reducer in the bevel gear, horn and placed the motor life, for improvement here.Shearer for the thin seam-less than 130 mm of high coal seam. As some of the coal seam thickness of ordinary low Shearer difficult to carry out normal exploitation, impact on the efficiency of coal mining. For some thin, the coexistence of thick coal seam, thin due to the slow pace of coal mining, to the lower part of the thick coal seam in the long-term not promptly mining, as well as affect the normal face to succeed, but some will be forced to lose some of the Thin seam resources. With a large number of coal mines in the thick seam of resource exploitation more, making fewer and fewer resources, the exploitation of thin seam has been included in the agenda. Therefore, the development of the thin seam for Shearer to adapt to different seam structure, improve the thin seam of coal mining efficiency is imperative.
Although Shearer thin seam of models, specifications have many, but it's the major component of the same, a reasonable choice Shearer thin seam of cutting the Department of parameters, can improve their work performance and reduce power consumption than coal mining. Choose this subject is to further thin seam Shearer familiar with the different parts of the working principle, to better improve, and its cutting reducer a detailed analysis of the design, durability and its time-saving easy decoration, To work to have better economic returns.
Key words: thin seam Shearer; cutting; reducer。
目錄
前言…………...........................................................................................................1
1緒論………………………………………………………………………………3
1.1國內外采煤機械的發展及其現狀…………………………………………… 3
1.2 薄煤層采煤機的分類及其特點……………………………………………... 4
1.3 薄煤層采煤機在我國的應用情況…………………………………………... 4
1.4 薄煤層采煤機的優點及其局限性…………………………………………... 6
1.5 薄煤層采煤機設計的目的及意義…………………………………………... 7
2薄煤層采煤機的總體結構方案的設計………………………………………… 8
2.1 薄煤層采煤機的主要技術參數的確定……………………………………... 8
2.2實現采煤機基本功能的結構方案設計…………………………………….. 11
2.3實現采煤機輔助功能的結構方案………………………………………….. 12
2.4 小結………………………………………………………………………… 16
3截割部減速器的具體設計說明………………………………………………. 21
3.1電動機的選擇………………………………………………………………... 21
3.1.1電動機功率的確定………………………………………………………. 21
3.1.2電動機型號的確定………………………………………………………. 21
3.2傳動裝置的運動和動力參數計算…………………………………………. 21
3.2.1傳動比的分配……………………………………………………………. 21
3.2.2根據傳動比的分配查書機械系統設計選擇齒輪齒數………………….. 22
3.2.3各軸功率、轉速和轉矩的計算………………………………………….. 22
3.3齒輪部分設計………………………………………………………………. 23
3.3.1電動機輸出部分齒輪傳動計算…………………………………………. 23
3.3.2減速器部分齒輪傳動計算………………………………………………. 31
3.4軸的設計……………………………………………………………………. 38
3.4.1變速箱低速軸的設計及強度校核………………………………………. 38
3.4.2變速箱中間軸的強度校核………………………………………………. 44
3.4.3變速箱高速軸的強度校核………………………………………………... 49
3.4.4變速箱外高速軸的強度校核……………………………………………. 54
3.4.5變速箱外低速軸的強度校核……………………………………………. 59
4整體性驗算……………………………………………………………………. 64
4.1穩定性的計算………………………………………………………………. 64
4.2 穩定性的評價指標………………………………………………………… 64
4.3 穩定比………………………………………………………………………. 65
4.4 生產能力的驗算……………………………………………………………. 66
5結論…………………………………………………………………………….. 68
致謝……………………………………………………………………………… 69
參考文獻…………………………………………………………………………. 70
附錄A 譯文……………………………………………………………………… 71
附錄B 外文文獻………………………………………………………………… 76 ...
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