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  本文選題：采煤機(jī)　切入點(diǎn)：直接轉(zhuǎn)矩控制　出處：《遼寧工程技術(shù)大學(xué)》2015年碩士論文

【摘要】：采煤機(jī)是綜采工作面的重要設(shè)備之一,其工作環(huán)境惡劣,載荷復(fù)雜。牽引部是采煤機(jī)的主要部件和易損壞部件,其可靠性決定著采煤機(jī)的性能和使用效果。近些年,電牽引采煤機(jī)已成為世界各國研究的主要方向,為了提高煤礦的開采效率,采煤機(jī)的牽引速度和牽引力在不斷增加,隨之,對采煤機(jī)的主要部件的強(qiáng)度和壽命的要求也在不斷增加,因此對其牽引部調(diào)速系統(tǒng)有了更高的要求。為了使采煤機(jī)牽引系統(tǒng)既滿足采煤效率的要求,又能保證其關(guān)鍵零部件的可靠性,首先研究電牽引采煤機(jī)牽引調(diào)速系統(tǒng)的動態(tài)特性,引入直接轉(zhuǎn)矩控制的變頻調(diào)速原理,結(jié)合采煤機(jī)調(diào)速系統(tǒng)的特點(diǎn),利用MATLAB構(gòu)建了直接轉(zhuǎn)矩控制調(diào)速系統(tǒng)的仿真模型,從而驗(yàn)證該牽引調(diào)速系統(tǒng)的可行性。在不同工況下,不同的牽引速度和牽引力也會影響整個采煤機(jī)中各零件的受力情況,對其關(guān)鍵零件的可靠性造成巨大影響。行走輪是采煤機(jī)的重要零件之一,因此本文對采煤機(jī)行走輪的可靠性進(jìn)行了分析,首先在PRO/E環(huán)境下建立采煤機(jī)完整的三維幾何模型,然后使用ADAMS對其進(jìn)行運(yùn)動學(xué)仿真,之后通過LS-DYNA對行走輪進(jìn)行顯示動力學(xué)仿真分析,最后運(yùn)用ANSYS疲勞模塊對其進(jìn)行疲勞壽命分析,驗(yàn)證了該采煤機(jī)行走輪的可靠性。論文的研究方法對電牽引采煤機(jī)的設(shè)計與研究有重要的借鑒意義。
[Abstract]:Shearer is one of the most important equipment in the fully mechanized working face, the working environment is bad, the load is complex. Traction is the main component of the shearer and easily damaged parts, its reliability determines the performance of shearer and its effect. In recent years, electric traction shearer has become the main direction of research in the world, in order to improve the coal mining the efficiency of the shearer traction speed and increasing, then, strength and life of the main components of the shearer's requirements are constantly increasing, so the speed control system of the traction department have higher requirements. In order to make the shearer coal mining system can not only meet the requirements of efficiency, and can guarantee the the reliability of the key parts of the dynamic characteristics, firstly the electric traction speed control system of shearer, introduced the principle of frequency conversion of direct torque control, speed control system combined with the characteristics of the coal mining machine, using MATLAB To build a simulation model of direct torque control system, in order to verify the feasibility of the traction drive system. Under different conditions, the stress condition of different traction speed and will affect the whole parts of shearer, seriously affects the reliability of its key parts. The walking wheel is one of the important parts of coal mining the machine, so this paper on the reliability of shearer wheel are analyzed firstly, establish the 3D geometric model of the shearer integrated in the PRO/E environment, and then use ADAMS to carry on the kinematics simulation of the walking wheel, after the display dynamic simulation by LS-DYNA, using the ANSYS module of the fatigue life of fatigue analysis, verification the reliability of the shearer wheel. The research method is of great significance for design and research of electric traction shearer.

【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD632.1

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本文編號：1724210