论文部分内容阅读
QY系列支架是我国70年代发展起来的一种二柱支顶四连杆掩护式液压支架。它的最大特点是二柱支在顶梁上,与其它掩护式支架相比,具有较高的支撑能力,另外采用四连杆机构,使支架顶梁距煤壁的距离基本保持不变,大大改善了支护性能,增强了支架的防护能力。与引进的掩护式支架相比,具有结构简单,便于操作,初期投资小,移架速度快等特点。适应于顶板较破碎,煤层倾角较大的工作面应用。
QY series of stents is developed in China in the 70’s a two-post support four-link protective screen hydraulic support. Its most prominent feature is that the two columns are supported on the top beam, which has a higher supporting capacity compared with other screening supports. In addition, the four-bar linkage mechanism is adopted to keep the distance between the support beam and the coal wall substantially unchanged, Improved support performance and enhanced stand protection. Compared with the introduction of the shield bracket, with a simple structure, easy to operate, the initial investment is small, moving faster and so on. Adapt to the roof is more broken, coal face angle greater application.