综采工作面推移动力学模型与仿真分析

doi:10.3901/JME.2022.07.117

机械工程学报 ›› 2022, Vol. 58 ›› Issue (7): 117-130.doi: 10.3901/JME.2022.07.117

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综采工作面推移动力学模型与仿真分析

王世博, 张辉

中国矿业大学机电工程学院徐州 221116

收稿日期:2021-02-19 修回日期:2021-08-28 出版日期:2022-04-05 发布日期:2022-05-20
通讯作者: 王世博(通信作者),男,1979年出生,博士,教授,博士研究生导师。主要研究方向为智能采掘装备。E-mail:wangshb@cumt.edu.cn
作者简介:张辉,男,1994年出生,硕士研究生。研究方向为液压支架仿真技术。E-mail:huizhang0814@163.com
基金资助:
国家自然科学基金资助项目(51874279)。

Dynamic Model and Simulation Analysis of Advancement of Fully Mechanized Mining Face

WANG Shibo, ZHANG Hui

School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116

Received:2021-02-19 Revised:2021-08-28 Online:2022-04-05 Published:2022-05-20

摘要/Abstract

摘要： 综采工作面自动调直控制策略亟需通过试验验证，为克服煤矿现场开展试验的复杂性和煤层截割不可重复的问题，提出了可模拟综采工作面推移过程的数学模型。综合考虑煤层倾角、综采装备结构尺寸与运行参数、落煤阻力以及顶底板作用力等因素建立了液压支架推溜移架力学模型。根据容腔节点法，建立了定量泵、电液换向阀、液控单向阀、溢流阀、液压缸等液压元件的数学模型，形成了液压支架推移液压系统模型。联合推溜移架力学模型、推移液压系统模型建立了综采工作面机液耦合仿真模型。仿真实验表明：由于推溜负载随推移距离的增加而逐渐增大，推溜负载的差异造成推移液压缸动作不同步，进而导致刮板输送机产生直线度误差。随截割循环次数的增加，误差的积累致使刮板输送机直线度误差逐渐增大。异常负载降低移架的同步性，导致液压支架出现对齐误差。综采工作面推移动力学模型为综采工作面推移控制策略验证和模拟实验提供了理论基础和测试平台。

关键词: 综采工作面, 液压支架, 刮板输送机, 机液耦合仿真

Abstract: The automatic straightening control strategy of fully mechanized coal mining face needs to be verified by experiment. To overcome the complexity of test at the coal mine site and the problem coal seam cut is unrecoverable, a mathematical model that simulate the progress of advancement of fully mechanized coal face is proposed. Considering factors such as inclination angle of coal seam, structure size and operating parameters of fully mechanized mining equipment, resistance generated by falling coal and roof and forces generated by roof and floor, the mechanical model of hydraulic support during push-pull process is proposed. Mathematical models of quantitative pump, electro-hydraulic directional valve, hydraulic control check valve, relief valve, hydraulic cylinder are established, and the hydraulic model of advancing control circuit is established based on cavity-node method. On the basis of the mechanical model of hydraulic support during push-pull process and the hydraulic model of advancing control circuit, mechanical-hydraulic coupling simulation model of fully mechanized coal mining face is proposed. Through simulation experiment, it is found that since pushing load gradually increases with the increase of the advancing distance, difference in pushing load caused action of pushing cylinders are out of sync, which in turn leads to the straightness error of scraper conveyor. With the increase of number of cutting cycles, accumulation of errors causes the straightness error of scraper conveyor to gradually increase. Abnormal load will reduce the synchronization of advancing hydraulic support, which causes the alignment error of hydraulic support. The dynamic advancement model of fully mechanized mining face provides the basic theory and test platform for control strategy of the advancement fully mechanized mining face

Key words: fully mechanized mining face, hydraulic support, scraper conveyor, mechanical-hydraulic coupling simulation

中图分类号:

TD421

王世博, 张辉. 综采工作面推移动力学模型与仿真分析[J]. 机械工程学报, 2022, 58(7): 117-130.

WANG Shibo, ZHANG Hui. Dynamic Model and Simulation Analysis of Advancement of Fully Mechanized Mining Face[J]. Journal of Mechanical Engineering, 2022, 58(7): 117-130.

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综采工作面推移动力学模型与仿真分析

Dynamic Model and Simulation Analysis of Advancement of Fully Mechanized Mining Face

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