LI M H, NIU H, FAN J Y, et al. Sensitivity analysis and optimization design of shearer’s spiral drum based on discrete element method[J].Journal of Henan Polytechnic University(Natural Science) ,2025,44(6):165-171.

doi:10.16186/j.cnki.1673-9787.2022100035

Received: 2022/10/11

Revised: 2023/05/10

Published: 2025/10/14

Sensitivity analysis and optimization design of shearer’s spiral drum based on discrete element method

Li Minghao1, Niu Hao1, Fan Jiayi2, Zhao Lijuan3,4

1.School of Mechanical Engineering， Shenyang Ligong University， Shenyang  110159， Liaoning， China；2.School of Mechatronics Engineering， Shenyang Aerospace University， Shenyang  110136， Liaoning， China；3.College of Mechanical Engineering， Liaoning Technical University， Fuxin  123000， Liaoning， China；4.Liaoning Provincial Key Laboratory of Large-Scale Mining Equipment， Fuxin  123000， Liaoning， China

Abstract: Objectives In order to optimize the coal loading performance and production efficiency of shearer working in complex coal seam， the floor climbing shearer’s spiral drum was studied based on the discrete element method， sensitivity analysis theory，and structural evolution algorithm. Methods The physical model of the spiral drum and the gangue coal rock was jointly established. The Hertz model was used to construct the coupling model between roller and gangue coal rock. Based on the physical characteristics parameters and the movement parameters of the drum and the gangue coal rock， the coal-loading performance of the shearer was simulated and analyzed， and the loading rate of the spiral drum of the climbing floor shearer was obtained by regional statistics. A discrete element coupling model for different geometric parameters and motion parameters of the drum was established. The data obtained from the simulation of discrete element coupling model was fitted， and the multi-objective design function of spiral drum was obtained based on the multi-objective optimization design weighting algorithm. Based on the stress-strength interference theory， the state evaluation function of the coal loading performance of the shearer screw drum was constructed. Combined with the sensitivity design theory， the influence law of screw drum design variables on the coal loading performance of shearer was obtained. Using structural evolution algorithm， the optimal solution of shearer spiral drum design variables was obtained. Results The results showed that the coal-loading rate of the optimized spiral drum was increased from 61.35% to 64.17%， the optimal design of spiral drum was achieved. The sensitivity of the design variable was reduced and the coal-loading performance of the spiral drum was improved， it showed that the overall performance of the optimized drum loading rate tended to be stable. Conclusions Combining discrete element technology， sensitivity design theory and structural evolution algorithm， an effective technical route for designing spiral drum with efficient cutting performance under the condition of occurrence of coal seam containing gangue was provided.

Key words: shearer; spiral drum; coal loading performance; sensitivity analysis; optimization design