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国内外大功率采煤机的自动调速种类较多,观点很不一致,哪几种自动调速系统相组合,与采煤机实际工况相匹配,比较合理、简单、可靠,是本文所论述的基本内容。一、采煤机的负载与牵引速度的关系根据实验和理论分析可知:当截割阻力(或截割阻力系数 A)不变或变化较小时,电机功率、牵引力、牵引部功率与牵引速度 v 近似地成正比,而比能耗
At home and abroad, many kinds of automatic speed governors for high-power shearer have many different opinions, and the combination of several kinds of automatic speed governing systems are matched with the actual working conditions of shearer, which is more reasonable, simple and reliable The basic content. First, the relationship between the load and the traction speed Shearer According to experimental and theoretical analysis shows that: when the cutting resistance (or cutting resistance coefficient A) unchanged or little change, the motor power, traction, traction and traction speed v Approximately proportional to energy consumption