采煤机滚筒工作性能优化研究
Research on optimization of working performance of shearer drum
王宏伟 1郭军军 2梁威 3耿毅德 4陶磊 3李进2
作者信息
- 1. 太原理工大学 山西省煤矿智能装备工程研究中心,山西 太原 030024;山西焦煤集团有限责任公司 博士后工作站,山西 太原 030024;太原理工大学 机械与运载工程学院,山西 太原 030024
- 2. 太原理工大学 山西省煤矿智能装备工程研究中心,山西 太原 030024;太原理工大学 机械与运载工程学院,山西 太原 030024
- 3. 太原理工大学 山西省煤矿智能装备工程研究中心,山西 太原 030024
- 4. 太原理工大学 山西省煤矿智能装备工程研究中心,山西 太原 030024;山西焦煤集团有限责任公司 博士后工作站,山西 太原 030024
- 折叠
摘要
在实际生产中,截割破碎过程是多作用耦合的结果,离散元法(DEM)与多体动力学(MBD)双向耦合技术可实现煤机设备与煤壁的信息交互,符合实际生产情况,具有较大的优越性.为提高采煤机滚筒的工作性能,基于DEM-MBD双向耦合机理,结合力学性能试验和模拟试验得到实际工况参数,采用仿真软件EDEM和RecurDyn建立了采煤机滚筒截割煤壁的双向耦合模型,对仿真过程中滚筒所受的转矩和截割力进行分析,证明耦合效果和截割效果较好.设计了单因素试验和正交试验,分析了滚筒运行参数对工作性能的影响规律,并利用SPSS软件得到滚筒转速、截割深度、牵引速度对截割比能耗、装煤率、载荷波动系数的影响程度,通过现场试验验证了模型的可行性.构建了以滚筒转速、截割深度、牵引速度为决策变量,以截割比能耗、装煤率和载荷波动系数为目标的多目标优化模型,利用改进多目标灰狼(MOGWO)算法和优劣解距离法(TOPSIS)对模型进行求解,得出当滚筒转速为 31.12 r/min、截割深度为 639.4 mm、牵引速度为 5.58 m/min时,采煤机滚筒的工作性能最优,此时截割比能耗为0.467 7 kW·h/m3,装煤率为43.01%,载荷波动系数为0.327 8.
Abstract
In actual production,the cutting and crushing process is the result of multi action coupling.The bidirectional coupling technology of discrete element method(DEM)and multi bodydynamics(MBD)can achieve information exchange between coal mining equipment and coal wall.It is in line with actual production situations and has significant advantages.In order to improve the working performance of the shearer drum,based on the DEM-MBD bidirectional coupling mechanism,combined with mechanical performance experiments and simulation experiments to obtain actual operating parameters,a bidirectional coupling model of the shearer drum cutting coal wall is established using simulation software EDEM and RecurDyn.The torque and cutting force experienced by the drum during the simulation process are analyzed,and it is proved that the coupling effect and cutting effect are good.Single factor experiments and orthogonal experiments are designed to analyze the influence of drum operating parameters on working performance.SPSS software is used to obtain the degree of influence of drum speed,cutting depth,and traction speed on cutting specific energy consumption,coal loading rate,and load fluctuation coefficient.The feasibility of the model is verified through on-site experiments.A multi-objective optimization model is constructed with drum speed,cutting depth,and traction speed as decision variables,and cutting specific energy consumption,coal loading rate,and load fluctuation coefficient as objectives.The improved multi-objective gray wolf optimization(MOGWO)algorithm and technique for order preference by similarity to ideal solution(TOPSIS)method are used to solve the model.It is found that when the drum speed is 31.12 r/min,the cutting depth is 639.4 mm,and the traction speed is 5.58 m/min,the working performance of the shearer drum is optimal.At this time,the cutting specific energy consumption is 0.467 7 kW·h/m3,the coal loading rate is 43.01%,and the load fluctuation coefficient is 0.327 8.
关键词
采煤机滚筒/双向耦合机理/离散元法/多体动力学/多目标优化/改进多目标灰狼优化算法/优劣解距离法Key words
shearer drum/bidirectional coupling mechanism/discrete element method/multibody dynamics/multi objective optimization/improved multi-objective gray wolf optimization algorithm/technique for order preference by similarity to ideal solution method引用本文复制引用
基金项目
山西省揭榜招标项目(20201101005)
山西省基础研究计划(202203021222082)
出版年
2024
国家科技期刊平台
NSTL
万方数据