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摘要
滾筒采煤機是煤炭采掘的重要設備。是實現(xiàn)煤礦生產(chǎn)機械化和現(xiàn)代化的重要設備之一。因此，它對提高煤的采掘效率有著重要的影響。目前，采煤機的設計技術已經(jīng)發(fā)展的相當完善，但是在國內采煤機技術和國外相比依然還比較落后。
本次設計在吸取了前人經(jīng)驗的基礎上設計了大功率，適合于中厚煤層的采煤機。對于采煤機的截割部進行了革新設計，采用強力耐磨型滾筒對稱布置，提高了割煤效果和滾筒壽命，降低截齒消耗量和用戶成本。機械傳動系統(tǒng)采用直齒圓柱齒輪和行星輪傳動動。故傳動效率 高，容易安裝和維護，分別用兩臺250KW的電動機驅動兩截割部。截割部電機容量調整范圍寬，其調整范圍為150～300Kw，通過調整截割電機容量，可實現(xiàn)一機多型。截割部采用四行星單浮動結構，承載能力大，減小了結構尺寸。采用大角度彎搖臂設計，加大過煤空間，提高裝煤效果，臥底量大。本次設計的采煤機采煤效率高，生產(chǎn)可隨不同的煤質的變化生產(chǎn)不同的機型，市場適應性強。
關鍵詞：采煤機、強力耐磨滾筒、截割部、彎搖臂、傳動系統(tǒng)
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 effect. The bottom taking quantity is large. This design of sheare has the features as follows:
The excavation efficiency is high; the production of types can be different according to different coal quality. The adaptability in marketing is strong.
Key Words: Sheare; Mightiness Worn Roller; cutting unit; ply rockerarm ; transition system
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