本文選題：采煤機(jī) + 非線性　； 參考：《機(jī)械設(shè)計》2017年02期

【摘要】：采用理論分析與試驗相結(jié)合的方法研究了采煤機(jī)在行走方向上的振動特性。分析了采煤機(jī)工作過程中的滾筒隨機(jī)截割載荷、行走非線性驅(qū)動載荷、摩擦載荷,再以這3個載荷作為工況激勵,建立了采煤機(jī)5自由度非線性振動方程,分析了采煤機(jī)行走方向的振動特性。結(jié)果表明:采煤機(jī)各部件剛度和質(zhì)量值較大,搖臂和機(jī)身的振動特性較為相似;當(dāng)行走速度為3~6 m/min時,隨著行走速度的增加,整機(jī)響應(yīng)振幅隨之變大;由相圖和龐加萊映射反映出整機(jī)振動處于混沌狀態(tài)。對采煤機(jī)振動特性進(jìn)行了現(xiàn)場試驗,試驗測得的機(jī)身振動加速度有效值為171.83 mm/s2,接近仿真值(156.06 mm/s2),表明采煤機(jī)的非線性模型在一定程度上可以視為是準(zhǔn)確的。
[Abstract]:The vibration characteristics of shearer in walking direction are studied by means of theoretical analysis and test. This paper analyzes the random cutting load, the traveling nonlinear driving load and the friction load of the shearer in the working process, and then takes these three loads as the working conditions to set up the nonlinear vibration equation of the shearer with 5 degrees of freedom. The vibration characteristics of shearer's walking direction are analyzed. The results show that the stiffness and mass of each component of the shearer are larger, the vibration characteristics of the rocker arm and fuselage are similar, and when the walking speed is 3 ~ 6 m/min, the response amplitude of the whole machine increases with the increase of the walking speed. The phase diagram and the Poincare map show that the vibration of the whole machine is in a chaotic state. The vibration characteristics of shearer are tested on the spot. The measured effective value of vibration acceleration of fuselage is 171.83 mm / s ~ (2), which is close to the simulation value of 156.06 mm / s ~ (2), which indicates that the nonlinear model of shearer can be regarded as accurate to some extent.
【作者單位】： 遼寧工程技術(shù)大學(xué)機(jī)械工程學(xué)院;遼寧工程技術(shù)大學(xué)國家地方聯(lián)合礦山液壓技術(shù)與裝備工程研究中心;中國煤礦裝備有限責(zé)任公司;
【基金】：國家能源研發(fā)(實驗)中心重大資助項目(2010_215) 遼寧省教育廳創(chuàng)新團(tuán)隊資助項目(LT2013009)
【分類號】：TD421.6

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 董愛華，李志正;一種簡單實用的方向判別電路[J];煤礦機(jī)電;1994年06期

相關(guān)重要報紙文章 前1條

1 卞超;讓鏡頭留住人生好風(fēng)光[N];人民政協(xié)報;2002年

，

本文編號：1927277