薄煤层采煤机总体方案毕业设计及截割减速器设计
摘要
薄煤层采煤机用于采高低于130mm的煤层。由于有些煤层的厚度太低普通采煤机难以进行正常开采，影响采煤的效率。对一些薄、厚煤层并存的煤矿,由于薄煤层开采速度缓慢,使其下部的中厚煤层长期得不到及时开采,以至影响工作面的正常接替,而有的就只能被迫丢失一些薄煤层资源。随着大批煤矿中、厚煤层的资源开采比较多,使得资源越来越少,所以薄煤层的开采已列入日程。因此,研制适合的薄煤层采煤机,以适应不同的煤层结构,提高薄煤层采煤的工作效率是当务之急。
虽然薄煤层采煤机的型号、规格有许多,但它的各主要组成部分大同小异，合理选择薄煤层采煤机的截割部的参数，可以改善其工作性能和减少采煤比能耗。选择这个题目就是要进一步熟悉薄煤层采煤机各部分的工作原理，对其进行更好的改进，并对它的截割部减速器进行细致分析设计，使其耐用并且省时省力容易装修，使其在工作中能够有更好的经济效益。对于现在使用较为广泛的薄煤层采煤机的减速器中存在的锥齿轮，影响电动机的安放和使用寿命，针对此处进行改进。
关键词：薄煤层采煤机；截割机构；减速器。
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。
目录
前言…………...........................................................................................................1
1绪论………………………………………………………………………………3
1.1国内外采煤机械的发展及其现状…………………………………………… 3
1.2 薄煤层采煤机的分类及其特点……………………………………………... 4
1.3 薄煤层采煤机在我国的应用情况…………………………………………... 4
1.4 薄煤层采煤机的优点及其局限性…………………………………………... 6
1.5 薄煤层采煤机设计的目的及意义…………………………………………... 7
2薄煤层采煤机的总体结构方案的设计………………………………………… 8
2.1 薄煤层采煤机的主要技术参数的确定……………………………………... 8
2.2实现采煤机基本功能的结构方案设计…………………………………….. 11
2.3实现采煤机辅助功能的结构方案………………………………………….. 12
2.4 小结………………………………………………………………………… 16
3截割部减速器的具体设计说明………………………………………………. 21
3.1电动机的选择………………………………………………………………... 21
3.1.1电动机功率的确定………………………………………………………. 21
3.1.2电动机型号的确定………………………………………………………. 21
3.2传动装置的运动和动力参数计算…………………………………………. 21
3.2.1传动比的分配……………………………………………………………. 21
3.2.2根据传动比的分配查书机械系统设计选择齿轮齿数………………….. 22
3.2.3各轴功率、转速和转矩的计算………………………………………….. 22
3.3齿轮部分设计………………………………………………………………. 23
3.3.1电动机输出部分齿轮传动计算…………………………………………. 23
3.3.2减速器部分齿轮传动计算………………………………………………. 31
3.4轴的设计……………………………………………………………………. 38
3.4.1变速箱低速轴的设计及强度校核………………………………………. 38
3.4.2变速箱中间轴的强度校核………………………………………………. 44
3.4.3变速箱高速轴的强度校核………………………………………………... 49
3.4.4变速箱外高速轴的强度校核……………………………………………. 54
3.4.5变速箱外低速轴的强度校核……………………………………………. 59
4整体性验算……………………………………………………………………. 64
4.1稳定性的计算………………………………………………………………. 64
4.2 稳定性的评价指标………………………………………………………… 64
4.3 稳定比………………………………………………………………………. 65
4.4 生产能力的验算……………………………………………………………. 66
5结论…………………………………………………………………………….. 68
致谢……………………………………………………………………………… 69
参考文献…………………………………………………………………………. 70
附录A 译文……………………………………………………………………… 71
附录B 外文文献………………………………………………………………… 76 ...
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