滚筒采煤机截割部的设计说明书—毕业设计.doc

滚筒采煤机截割部的设计 摘要 滚筒采煤机是煤炭采掘的重要设备。是实现煤矿生产机械化和现代化的重要设备之一。因此，它对提高煤的采掘效率有着重要的影响。目前，采煤机的设计技术已经发展的相当完善，但是在国内采煤机技术和国外相比依然还比较落后。 本次设计在吸取了前人经验的基础上设计了大功率，适合于中厚煤层的采煤机。对于采煤机的截割部进行了革新设计，采用强力耐磨型滚筒对称布置，提高了割煤效果和滚筒寿命，降低截齿消耗量和用户成本。机械传动系统采用直齿圆柱齿轮和行星轮传动动。故传动效率 高，容易安装和维护，分别用两台250KW的电动机驱动两截割部。截割部电机容量调整范围宽，其调整范围为150～300Kw，通过调整截割电机容量，可实现一机多型。截割部采用四行星单浮动结构，承载能力大，减小了结构尺寸。采用大角度弯摇臂设计，加大过煤空间，提高装煤效果，卧底量大。本次设计的采煤机采煤效率高，生产可随不同的煤质的变化生产不同的机型，市场适应性强。 关键词：采煤机、强力耐磨滚筒、截割部、弯摇臂、传动系统 Abstract Sheare is an important equipment for excavation. It is one of the important facilities for the mechanization and modernization of coal-mining production. Hence it has important effects on the improvement of excavation efficiency. Presently the design technologies of sheares have developed relatively perfect. When comparing with abroad, however, the technology of this area is still behindhand. Basing on assimilating the experience of people has worked in this area, this design, schemes out High-power sheare which is suitable for medium thickness seam. It does innovatory design on the cutting unit of shears by resorting to disposal symmetry of Mightiness Worn Roller, which improves the cutting effect and longevity. At the same time it reduces the wastage of truncation straight and customers’ cost. As to Machine driven system, its transmission resorts to spur gear and planetary wheel. Hence the transmission efficiency is improved and its installation and maintenance are easier. Two of the departments of crop are driven by two separate 250kw- electromotors. The modulation range of electromotors’ capacity in the departments of crop is large, which is ranging from 150kw to 300kw. Through the modulation of the electromotors’ capacity, the one machine-multi-type style can be carried out. The departments of crop resort to globe certificate floating structure, whose carrying capacity is large and reducing the structure measure. The applications of ply rockerarm increase the coal’s transit space and improve the coal’s load ef