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基于磁流变弹性体动力吸振器的掘进装备振动控制

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针对掘进装备在自适应截割控制下的截割部宽减振问题,基于磁流变弹性体的动力吸振技术,提出了一种掘进装备截割部的振动控制方法.首先,以连续采煤机为研究对象,根据动量矩定理,建立了截割部-磁流变弹性体动力吸振器(MREDVA)耦合动力学模型,从理论上分析了MREDVA的减振机理;然后,为保证MREDVA的磁路以及移频特性满足需求,详细阐述了MREDVA的设计流程,提出了一种新的MREDVA结构,对其磁场和移频特性进行了仿真验证;最后,计算了不同截割状态下MREDVA对截割部的振动抑制能力,并建立了半主动控制方法,比较了被动和半主动振动控制方法下MREDVA的振动抑制能力.研究结果表明:对于所选煤层1 和煤层2,截割部的振幅衰减分别达到41.53%和49.80%;对于所选煤层3,半主动控制下截割部振幅衰减可以达到45.10%.该方法可以有效降低掘进装备在宽频激励下的振动幅度.
Vibration reduction of tunneling equipment using magnetorheological elastomer dynamic vibration absorber
Aiming at the problem of wide vibration reduction of the cutting part of tunneling equipment under self-adaptive cutting control,it was proposed by applying dynamic vibration absorption technology based on magnetorheological elastomer to the vibration control of the cutting part of tunneling equipment.Firstly,the continuous miner was taken as the research object in this case,the coupling dynamics model of the cutting part-magnetorheological elastomer dynamic vibration absorber(MREDVA)was established according to the momentum moment theorem,and the vibration reduction mechanism of MREDVA was theoretically analyzed.Then,to ensure that the magnetic circuit of MREDVA and the shifted frequency characteristics of MREDVA met the requirements,the design process of MREDVA was elaborated in detail,and a new MREDVA structure was proposed,with its magnetic field and shifted frequency characteristics simulated and verified.Finally,the vibration suppression ability of MREDVA on the cutting part under different cutting conditions was calculated,and a semi-active control method was established to compare the vibration suppression ability of MREDVA under passive and semi-active vibration control methods.The research results show that for the selected coal seam 1 and coal seam 2,the amplitude attenuation of the cutting part respectivelyreaches41.53%and 49.8%,for the selected coal seam 3,the amplitude attenuation of the cutting part under semi-active control can reach 45.1%.This method can effectively reduce the vibration amplitude of tunneling equipment under broadband excitation.

underground mining machinerytunneling equipmentvibration controlself-adaptive cuttingmagneto-rheological elastomer dynamic vibration absorbersemi-active control

李昂、郭治富、王腾、王步康

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煤炭科学研究总院,北京 100013

中国煤炭科工集团太原研究院有限公司,山西 太原 030006

山西天地煤机装备有限公司,山西 太原 030006

地下采掘机械 掘进装备 振动控制 自适应截割 磁流变弹性体动力吸振器 半主动控制

国家重点研发计划中国煤炭科工集团太原研究院自立项目

2020YFB1214000F2022-BS02

2024

10.3969/j.issn.1001-4551.2024.05.017

机电工程
浙江大学　浙江省机电集团有限公司

机电工程

CSTPCD北大核心
影响因子：0.785
ISSN：1001-4551
年,卷(期)：2024.41(5)
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