综采工作面刮板输送机优化设计关键技术研究

Key technology research on optimization design of scraper conveyer at full-mechanized working face

针对切眼较长综采工作面刮板输送机出现的运力不足和启动困难等问题,分析了刮板输送机受力情况以及刮板输送机平直段和弯曲段的负载情况,并对紧链力造成的刮板与中部槽之间的侧向摩擦力进行了深入探讨,详细阐述了利用多种群遗传算法优化刮板输送机弯曲段溜槽数,使弯曲段相邻溜槽间转角由之前的1°改为40′。实际应用表明,优化后的刮板输送机在不改变溜槽宽度的前提下不仅提高了运输能力,而且在设备投入、掘进成本、耗电量以及设备故障率等方面的经济效益明显。

Aiming at the insufficient transport capacity and difficult start of scraper conveyer in full-mechanized working face with longer open-off cut, stress condition of the scraper conveyer and loading condition of its straight section and curve section were analyzed, and the side friction between scraper and middle trough caused by chain-stretching force was discussed deeply, chute number at curve section of scraper conveyer was optimized by using multi-population genetic algorithm, and the rotation an- gle of curve section between adjacent chute adopted 40r instead of 1~. The practical application showed that optimized scraper con- Veyer with fixed chute width not only improved transportation capability, but also achieved good economic benefits in terms of e- quipment invest, tunneling cost, power consumption and equipment failure rate.