高效颚式破碎机的研制

对传统的颚式破碎机内齿角设汁概念进行了分析,发现其有很大的局限性,认为它没有真实地反映颚式破碎机的工作优况,并针对单肘板颚式破碎机的运动特性提出了啮角设计的新概念——工态啮角。工态啮角的概念纠正了传统的单肘板颚式破碎机啮角设计的错误,正确地解释了影响单肘板颚式破碎机工作的各种因素。作者以工态啮角为设计思想,设计了肘板下置式高效、低磨损曲线破碎腔的单肘板颚式破碎机,取得了非常好的效果。与原用颚式破碎机相比较,处理能力提高20～50％,颚板寿命延长1倍以上。

DEVELOPMENT OF HIGH EFFICIENCY JAW CRUSHER RESEARCH

In this paper, the authors, after analyzing the nip angle concept now used in a jaw crusher design, have discovered that it is right only in a limited range and it does not really reflect the working conditions of a jaw crusher. To describe the single-toggle jaw crusher working character, "authors propose a new concept: working nip angle. It redresses the error in the design of single-toggle jaw crusher nip angle and rightly explains various factors affecting the jaw crusher operation. With the working nip angle concept, authors have designed a single-toggle jaw crusher with a high efficiency, low abrasive crushing chamber and a structure of the toggle set down, with very good test results. As compared with original jaw crushers, the throughput of this new one increases by 20~50% and its jaw plate has a twice longer service life.