【摘要】 针对传统破碎机存在易堵塞，粒径控制不精准，体积大，不能直接集成于煤炭智能制样系统中等问题，设计开发了一款改进型卧式环锤破碎机。通过轴端进料、对称锤头、全腔破碎及加装筛板等结构，在保证结构紧凑的前提下，有效提升了破碎均匀性，显著缓解了湿煤黏附堵塞问题。基于离散单元法开展了破碎性能仿真，分析了主轴不同转速下的出料粒度分布与破碎效率，结果显示：在1 500r/min转速下，6.0 mm煤样可破碎至1.73 mm，破碎比为3.46，满足3.0 mm出料粒度与95%过筛率的制样要求。更多还原

【Abstract】 In view of the problems of easy blockage, inaccurate particle size control and large volume of traditional crushers, which could not be directly integrated into the intelligent coal sample preparation system, an improved horizontal ring hammer crusher was designed and developed. Through structural optimizations including shaft-end feeding, symmetrical hammer heads, full-cavity crushing, and the addition of a sieve plate, the crushing uniformity was effectively improved under the premise of compact structure, and the problem of wet coal adhesion and blockage was significantly alleviated. Based on the discrete element method, the crushing performance simulation was carried out, and the particle size distribution and crushing efficiency under different spindle speeds were analyzed. The analysis results showed that at the speed of 1 500 r/min, the 6.0 mm coal sample could be broken to an average particle size of 1.73 mm with a crushing ratio of 3.46, meeting the sample preparation requirements of 3.0 mm discharge particle size and 95% sieving rate. The equipment had been successfully applied to the intelligent sample preparation system. Granulometry tests and analysis demonstrated high consistency with simulation results, providing key equipment support for achieving automation, informatization, and precise granulometry control in the sample preparation process.更多还原