摘 要
型煤加工对于有效地利用粉煤资源和保护环境是十分重要的,在我国的能源构成中,煤炭占有十分重要的地位。据统计,在我国能源生产和消费中,煤炭约占总量的75%左右。但是,随着采煤机械化程度的不断的提高,粉煤在原煤中所占的比例也越来越大。粉煤比例的增加不仅降低了散煤的燃烧效率,而且严重地污染了环境。发展型煤是提高粉煤利用率和减少环境污染的重要途径,研究表明,工业锅炉,窑炉使用型煤后可比烧散煤节煤10%~27%,烟尘排放量可减少50%~60%,添加固硫剂后,二氧化硫的排放量可减少35%~50%。因此,发展型煤对我国具有十分重要的现实意义。
本设计为一种用于煤炭成型加工的高压对辊成型机,包括有机架,定对辊轴和动对辊轴设置在机架中部,动对辊轴的两端设置有加压装置,通过加压装置,动对辊轴能移动一定距离,在定对辊轴的轴端有同步外挂齿轮与联轴装置及三级设计减速器相连,在定对辊轴和动对辊轴上方的机架上安置有加料装置。该机采用强制加料方式,液压加载和使用安全联轴器,从而使其型煤产品满足生产要求。
关键词:型煤; 型煤加工; 粉煤; 对辊成型机
ABSTRACT
Coal processing for the effective use of coal resources and environmental protection is very important, Coal occupy a very important position in our energy mix. According to statistics, China's energy production and consumption, coal accounts for about 75% of total. However, as the mining mechanization of a continuous increase in coal pulverized coal as a proportion is also growing. Coal proportion of the increase not only reduced the casual coal combustion efficiency, but also seriously polluted the environment. Development of coal briquette is to improve utilization and reduce environmental pollution in important ways, the study shows that industrial boilers, Kiln use briquette after comparable saving coal burning coal powder 10% ~ 27%, soot emissions can be reduced 50% ~ 60%. After the addition of sorbent , and sulfur dioxide emissions can be reduced 35% ~ 50%. Therefore, the development of China's coal is of great practical significance.
The design of the coal used in a high-pressure molding and processing of roll forming machines, including rack, set to roll axis and move on roller shaft installed in the central rack, moving to the ends of roller shaft equipped with pressure device, through compression devices, move to roll axis can move a certain distance. In determining the roll axis of the shaft to keep pace with the pylon gear coupling device design and three-reducer, In determining the roll axis and move right side of the roll axis rack placed on the feeder. The aircraft introducing compulsory feeding, hydraulic loading and the use of safety coupling, thus briquette products meet production requirements.
Keywords : briquette; Coal processing; Coal; Right roll forming machine
目 录
1 概述1
1.1型煤发展方向1
1.1.1发展型煤产业的重要性1
1.1.2型煤产业及技术的现状1
1.2国内外型煤发展概况2
1.2.1国外型煤概况2
1.2.2 国内型煤概况4
1.3对辊成型机的发展概况4
1.3.1对辊成型机的发展展状况4
1.3.2对辊成型机的成型机理5
2.基本参数的确定7
2.1选择电动机7
2.1.1选择电动机的类型和结构形式7
2.1.2选择电动机的容量7
2.2.1传动装置的总传动比8
2.2.2分配各级传动比9
3.V带设计计算10
3.1确定计算功率10
3.2选择带型10
3.3确定带轮基准直径10
3.4验算带的速度11
3.5初定中心距11
3.6确定基准长度11
3.7确定实际轴间距11
3.8验算小带轮包角12
3.9单根V带的基本额定功率12
3.10V带的根数12
3.11单根V带的预紧力13
3.12带轮的结构和尺寸13
4.基本参数计算14
4.1各轴的转速14
4.2各轴功率14
4.3各轴转矩14
5.减速器设计计算15
5.1 I轴齿轮设计计算15
5.1.1选择齿轮材料15
5.1.2初定齿轮主要参数15
5.1.3校核齿面接触疲劳强度17
5.2Ⅱ轴齿轮设计计算20
5.2.1选择齿轮材料20
5.2.2 初定齿轮主要参数21
5.2.3校核齿面接触疲劳强度23
5.3Ⅲ轴齿轮设计计算26
5.3.1选择齿轮材料26
5.3.2 初定齿轮主要参数26
5.3.3 校核齿面接触疲劳强度28
6 减速器轴的设计计算32
6.1Ⅰ轴的设计计算32
6.1.1选择轴的材料32
6.1.2初步估算轴的的直径32
6.1.3轴上零部件的选择和轴的结构设计33
6.1.4轴的受力分析34
6.1.5轴的强度计算37
6.2Ⅱ轴的设计计算38
6.2.1选择轴的材料38
6.2.2初步估算轴的的直径38
6.2.3轴上零部件的选择和轴的结构设计38
6.2.4轴的受力分析39
6.2.5轴的强度计算40
6.3 Ш轴的设计计算43
6.3.1选择轴的材料43
6.3.2初步估算轴的的直径43
6.3.3轴上零部件的选择和轴的结构设计43
6.3.4轴的受力分析44
6.3.5轴的强度计算45
6.4Ⅳ轴的设计计算48
6.4.1 选择轴的材料48
6.4.2初步估算轴的的直径49
6.4.3轴上零部件的选择和轴的结构设计49
6.4.4轴的受力分析50
6.4.5轴的强度计算51
7 减速器键的校核55
7.1 I轴键的校核55
7.2Ⅱ轴键的校核55
7.3Ⅲ轴键的校核55
7.4Ⅳ轴键的校核56
8 减速器轴承的校核56
8.1验算Ⅰ轴承寿命56
8.2验算Ⅱ轴承寿命57
8.3验算Ⅲ轴承寿命58
8.4验算Ⅳ轴承寿命59
9.减速器箱体设计计算60
9.1 箱体设计60
10 对辊机构的设计计算61
10.1型辊轴的设计计算61
10.1.1选择轴的材料61
10.1.2初步估算轴的的直径62
10.1.3轴上零部件的选择和轴的结构设计62
10.1.4 轴的受力分析62
10.1.5轴的强度计算66
10.2验算轴承寿命66
10.3型辊轴键的校核67
10.4辊型及型板的设计67
10.5 压辊的支撑装置(轴承)69
10.6 给料系统70
10.7 承压支架71
10.8 同步驱动齿轮系71
10.8.1选择齿轮材料71
10.8.2初定齿轮主要参数72
10.8.3校核齿面接触疲劳强度73
10.9液压施压系统及润滑76
结论78
参考文献79
翻译部分81
英文原文81
中文译文87
致 谢92