机械5

250万吨矿井刮板输送机选型设计 摘要 刮板输送机是煤矿综采工作面唯一的运输设备。刮板输送机侧面与液压支架联接，为支架的移动提供支点，它沿工作面铺设，以千斤顶与液压支架相联系，为采煤机提供运行轨道，将采煤机落下的煤运入顺槽转载机，再经过可伸缩胶带输送机运送至采区煤仓，完成工作面运煤工序。所以，刮板输送机的可靠、稳定、高效运行将直接影响着矿井的生产能力和煤矿企业的经济效益。随着我国煤炭开采不断地向长壁大采高综采工作面的方向发展，采煤量的不断加大，安全、高产、高效已经成为各煤炭企业的追求目标，因此，各煤炭企业对工作综采设备的性能要求也在迅速提高。需求的增加将激励着国内的煤机生产企业将研制开发的重点转向了大装机功率大运输量、长运输距离、高强度、高可靠性的重型刮板输送机，这也是刮板输送机未来的发展方向。因此，正确选择刮板输送机对采煤工作面高效运转至关重要。 本文中从中部槽的设计选用、运行阻力的计算、计算电动机功率、计算刮板链的预紧力和紧链力、验算刮板链的安全系数、减速器设计等入手，在设计中刮板输送机采用了机头、机尾双驱动，传动部平行布置的总体设计。本文还对传动部的齿轮进行了设计计算和校核，对重要的轴、键进行了强度校核，对主要轴承进行了寿命校核，对其他部分进行了选用，从多个方面对250万吨矿井刮板输送机进行选型计算，具有一定参考价值。 关键词：刮板输送机；运行阻力；减速器；选型 Selectio
n Desig
n of 2.5 Millio
n To
ns Mi
ne Scraper Co
nveyor Abstract Scraper co
nveyor is the o
nly tra
nsportatio
n equipme
nt i
n the fully mecha
nized coal mi
ni
ng face. The side of the scraper co
nveyor is co
n
nected with the hydraulic support to provide a fulcrum for the moveme
nt of the support. It is laid alo
ng the worki
ng face, co
n
nected with the hydraulic support by a jack, to provide a ru
n
ni
ng track for the shearer, to tra
nsport the coal falli
ng from the shearer i
nto the trough tra
nsfer machi
ne, a
nd the
n tra
nsported to the coal bi
n of the mi
ni
ng area through the retractable belt co
nveyor to complete the coal co
nveyi
ng process of the worki
ng face. Therefore, the reliable, stable a
nd efficie
nt operatio
n of the scraper co
nveyor will directly affect the productio
n capacity of the mi
ne a
nd the eco
nomic be
nefits of the coal e
nterprises. With the co
nti
nuous developme
nt of coal mi
ni
ng i
n our cou
ntry towards the lo
ng wall a
nd large height fully mecha
nized coal face, the i
ncreasi
ng of coal mi
ni
ng volume, safety, high yield a
nd high efficie
ncy have become the pursuit goal of all coal e
nterprises. Therefore, the performa
nce requireme
nts of all coal e
nterprises for fully mecha
nized coal mi
ni
ng equipme
nt are also rapidly i
ncreasi
ng. The i
ncrease of dema
nd will e
ncourage the domestic coal machi
nery ma
nufacturers to tur
n the focus of research a
nd developme
nt to the heavy-duty scraper co
nveyor with large i
nstalled power, large tra
nsportatio
n capacity, lo
ng tra
nsportatio
n dista
nce, high stre
ngth a
nd high reliability, which is also the future developme
nt directio
n of scraper co
nveyor. Therefore, the correct selectio
n of scraper co
nveyor is very importa
nt for the efficie
nt operatio
n of coal face. I
n this paper, starti
ng from the desig
n a
nd selectio
n of the middle slot, the calculatio
n of ru
n
ni
ng resista
nce, the calculatio
n of motor power, the calculatio
n of the pre tighte
ni
ng force a
nd the tighte
ni
ng force of the scraper chai
n, the calculatio
n of the safety factor of the scraper chai
n, the desig
n of the reducer, etc., i
n the desig
n, the scraper co
nveyor adopts the overall desig
n of the head a
nd tail double drive, a
nd the tra
nsmissio
n part is arra
nged i
n parallel. I
n this paper, the desig
n calculatio
n a
nd check of the gear i
n the tra
nsmissio
n part, the stre
ngth check of the importa
nt shaft a
nd key, the life check of the mai
n beari
ng, a
nd the selectio
n of other parts are also carried out. The selectio
n calculatio
n of the 2.5 millio
n to
n scraper co
nveyor i
n the mi
ne from various aspects has certai
n refere
nce value. Key words: scraper co
nveyor; ru
n
ni
ng resista
nce; reducer; selectio
n 目录 摘要i Abstract ii 1绪论1 1.1刮板输送机的组成2 1.1.1机头部2 1.1.2中部槽及附属部件3 1.1.3刮板链4 1.1.4紧链装置4 1.1.5推移装置5 1.1.6锚固装置5 1.2刮板输送机的分类5 1.3刮板输送机的应用6 1.4刮板输送机的工作原理6 1.5刮板输送机的特点6 1.6刮板输送机的发展现状和趋势6 1.7新型刮板输送机7 2总体设计8 2.1刮板输送机设计计算8 2.1.1中部槽的设计选用8 2.1.2运行阻力的计算10 2.1.3计算电机功率11 2.1.4计算刮板链的预紧力和紧链力12 2.1.5验算刮板链的安全系数12 2.2传动方案的设计13 2.2.1传动方案的确定13 2.2.2总传动比及传动比分配13 2.2.3传动装置运动参数的计算15 2.3减速器传动件设计计算15 2.3.1传动部弧齿锥齿轮设计计算15 2.3.2中速级斜齿圆柱齿轮设计计算26 2.3.3传动部行星机构的设计计算34 2.3.4圆环链链轮设计计算40 2.4 SGZ1000/2×700中双链刮板输送机技术特征42 3零部件的设计及校核43 3.1轴的设计及校核43 3.1.1高速轴的设计校核43 3.1.2第二轴的设计计算49 3.1.3初算第三轴轴径56 3.1.4初算行星轮系各轴径56 3.1.5初算链轮轴径56 3.2轴承的寿命校核57 3.2.1高速轴轴承寿命计算57 3.2.2第二轴轴承寿命的计算58 3.3键的设计与强度校核60 3.3.1高速轴普通平键设计校核60 3.3.2链轮轴渐开线花键校核61 3.4联轴器的选用62 4刮板输送机的使用和维修64 4.1刮板输送机的安装与试运转64 4.1.1刮板输送机零部件的存放64 4.1.2安装与调试64 4.1.3刮板输送机的使用与维护66 4.2刮板输送机的润滑68 4.3常见故障及处理方法69 附录71 参考文献77 致谢79