本文選題：鉸接式膠輪車 + 機(jī)液聯(lián)合仿真��； 參考：《中北大學(xué)》2017年碩士論文

【摘要】：防爆無軌膠輪車因其較強(qiáng)的機(jī)動(dòng)性能大大提高了煤礦的生產(chǎn)效率,促使國外鉸接式膠輪車的設(shè)計(jì)研究得到快速發(fā)展。國內(nèi)針對礦用鉸接式膠輪車的研究起步較晚,目前設(shè)計(jì)理論尚不完善,仍處于仿造階段。鉸接轉(zhuǎn)向機(jī)構(gòu)作為膠輪車的重要組成部分,直接關(guān)系到車輛的機(jī)動(dòng)性能,礦用膠輪車多使用在井下,井下巷道巖石多,而膠輪車本身越障時(shí)受力更大,更容易發(fā)生破壞。因此,本文針對膠輪車越障工況下的性能進(jìn)行研究,并根據(jù)實(shí)際問題及分析結(jié)果對鉸接轉(zhuǎn)向機(jī)構(gòu)進(jìn)行結(jié)構(gòu)改進(jìn)。旨在為國內(nèi)膠輪車的進(jìn)一步發(fā)展提供一定的理論依據(jù)。主要研究結(jié)果如下:選取矩形臺階路面這種典型路況,利用ADAMS、AMESim建立鉸接式膠輪車的機(jī)液聯(lián)合仿真模型,仿真分析車輛在轉(zhuǎn)向狀態(tài)下通過這障礙路面時(shí)的車體載荷分布及轉(zhuǎn)向穩(wěn)定性等性能,并基于ANSYS對膠輪車進(jìn)行瞬態(tài)動(dòng)力學(xué)仿真。最終能夠發(fā)現(xiàn)防爆無軌膠輪車存在扭矩過大、應(yīng)力集中、側(cè)傾穩(wěn)定性不好的問題。為了驗(yàn)證所建立機(jī)液聯(lián)合仿真模型的可靠性,進(jìn)行了防爆柴油機(jī)無軌膠輪車轉(zhuǎn)向越障的實(shí)驗(yàn),發(fā)現(xiàn)實(shí)驗(yàn)結(jié)果與仿真結(jié)果吻合度較高,表明所建立的機(jī)液聯(lián)合仿真模型是合理的,可以作為研究防爆無軌膠輪車的工具,得出確實(shí)存在仿真所發(fā)現(xiàn)的問題。為了解決膠輪車存在的問題,對膠輪車鉸接轉(zhuǎn)向機(jī)構(gòu)進(jìn)行了改進(jìn),引進(jìn)了二自由度鉸接盤,建立了二自由度膠輪車,對新建立的二自由度鉸接車模型進(jìn)行研究,與原來的仿真結(jié)果進(jìn)行對比,發(fā)現(xiàn)在應(yīng)力、扭矩和側(cè)傾穩(wěn)定性方面都有了一定提高,解決了最開始發(fā)現(xiàn)的問題。針對新建立的二自由度膠輪車,為了分析其越過障礙時(shí)的性能,建立其越過臺階障礙時(shí)的力學(xué)模型,進(jìn)而計(jì)算其單側(cè)車輪越過臺階障礙時(shí)的極限高度,通過使膠輪車越障極限高度最大來重新設(shè)計(jì)鉸接盤的幾何尺寸,從而達(dá)到優(yōu)化二自由度膠輪車越障性能的目的。本文研究結(jié)果可為鉸接式膠輪車轉(zhuǎn)向機(jī)構(gòu)的設(shè)計(jì)提供一定的理論依據(jù)。
[Abstract]:The explosion-proof trackless rubber wheel car has greatly improved the production efficiency of the coal mine because of its strong maneuverability, and has promoted the rapid development of the design and research of the articulated rubber wheel car abroad. The domestic research on the mine articulated rubber wheel car started late, and the design theory is not perfect at present, it is still in the stage of imitation. As an important part of rubber wheel vehicle, hinge steering mechanism is directly related to the motor performance of the vehicle. The mine rubber wheel car is mostly used in the underground, and there are more rocks in the underground roadway, while the rubber wheel car itself is subjected to more stress when it overcomes the obstacle and is more prone to damage. Therefore, this paper studies the performance of the rubber wheel vehicle under the condition of overrunning obstacles, and improves the structure of the hinge steering mechanism according to the actual problems and the analysis results. The purpose is to provide certain theoretical basis for the further development of domestic rubber wheel car. The main results are as follows: select the typical road condition of rectangular step pavement, and establish the joint simulation model of the articulated rubber wheel car by using Adams AMESim. The performance of vehicle body load distribution and steering stability under steering condition is analyzed, and the transient dynamics simulation of rubber wheel vehicle is carried out based on ANSYS. Finally, it can be found that the explosion-proof trackless rubber wheel vehicle has the problems of excessive torque, stress concentration and poor roll stability. In order to verify the reliability of the combined simulation model, an experiment was carried out on the anti-explosion diesel engine trackless rubber wheel vehicle. It was found that the experimental results were in good agreement with the simulation results, which indicated that the model was reasonable. It can be used as a tool to study the explosion-proof trackless rubber wheel vehicle, and the problems found by simulation are obtained. In order to solve the problems existing in the rubber wheel car, the hinge steering mechanism of the rubber wheel car is improved, the two degree of freedom hinge disc is introduced, the two degree of freedom rubber wheel car is established, and the new two freedom degree of freedom hinge car model is studied. Compared with the original simulation results, it is found that the stress, torque and roll stability have been improved to some extent, and the problems found at the beginning have been solved. In order to analyze the performance of the newly established two-degree-of-freedom rubber wheeled vehicle, a mechanical model is established to calculate the limit height of the one-sided wheel when it crosses the step obstacle in order to analyze the performance of the vehicle, and to establish a mechanical model for the vehicle to cross the step obstacle. In order to optimize the performance of two-degree-of-freedom rubber wheel vehicle, the geometric dimension of the hinge plate is redesigned by making the maximum height of the obstacle crossing limit of the rubber wheel vehicle. The results of this paper can provide some theoretical basis for the design of steering mechanism of articulated rubber wheel car.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD50

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