某铰接式胶轮车全液压转向系统仿真与优化研究
发布时间：2018-09-01 11:18
【摘要】：铰接式胶轮车是一种煤矿井下特种运输车辆,它可往井下直接运输机械化采煤设备、液压支架等,运输快,运输能力大,可大量节省辅助操作人员,提高运输效率。全液压转向系统,转向器与转向机构之间无机械连接,通过液压油管与转向油缸连接,普遍应用在农业机械、工程机械、叉车等行业。铰接式胶轮车当前使用的转向系统存在的突出问题是,在转向过程中系统存在压力振摆,严重影响了转向系统的性能。因此本文以铰接式胶轮车负载传感全液压转向系统为研究对象,针对铰接式胶轮车全液压转向系统的压力振摆问题,研究内容如下:从铰接方式入手,对铰接转向系统进行分析,研究转向油缸压力和转向油缸行程差的影响因素。为反映实际工况,选用AMESim对全液压转向系统中的两个重要元件—优先阀和转向器,进行建模,并分析其性能。选用ADAMS建立铰接式胶轮车虚拟样机模型。根据前面建立的转向系统AMESim液压模型和车体ADAMS虚拟样机模型,建立较为完整的铰接式胶轮车全液压转向系统机液联合仿真模型,经过对转向系统进行仿真分析,发现在转向过程中存在较为严重的压力振摆。针对此问题,以左右油缸最大行程差和最大油缸压力最小为优化目标,油缸铰接点位置为设计变量,对铰接转向系统进行优化设计,并根据所建立的铰接式胶轮车全液压转向系统机液联合仿真模型对优化结果进行仿真验证。仿真结果表明,优化后,转向系统最大压力减少了18.86%,振摆幅度减少了19.41%,优化效果明显。
[Abstract]:Articulated rubber wheel car is a kind of special transportation vehicle in underground coal mine. It can directly transport mechanized coal mining equipment, hydraulic support, etc. There is no mechanical connection between steering gear and steering mechanism, and it is widely used in agricultural machinery, construction machinery, forklift truck and so on. The main problem in the steering system of articulated rubber wheel vehicle is that there is a pressure vibration in the steering system which seriously affects the performance of the steering system. Therefore, this paper takes the load sensing full hydraulic steering system of articulated rubber wheel vehicle as the research object, aiming at the pressure vibration and pendulum of the full hydraulic steering system of the articulated rubber wheel car, the research contents are as follows: starting with the hinged mode, By analyzing the hinge steering system, the factors influencing the steering cylinder pressure and the stroke difference of the steering cylinder are studied. In order to reflect the actual working conditions, AMESim was selected to model the two important components of the hydraulic steering system, the priority valve and the steering gear, and its performance was analyzed. The virtual prototype model of articulated rubber wheel car is established by using ADAMS. According to the AMESim hydraulic model of steering system and the virtual prototype model of carbody ADAMS, a complete simulation model of hydraulic steering system of articulated rubber wheel car is established, and the steering system is simulated and analyzed. It is found that there are more serious pressure oscillations in the steering process. Aiming at this problem, the optimum design of hinged steering system is carried out with the maximum stroke difference between left and right cylinder and the minimum cylinder pressure as the optimization objective, and the position of the hinge point of the cylinder as the design variable. The optimization results are verified by the combined simulation model of the hydraulic steering system of the articulated rubber wheel car. The simulation results show that the maximum pressure of steering system is reduced by 18.86, the amplitude of vibration and pendulum is reduced by 19.41, and the optimization effect is obvious.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD525
本文编号：2217031
[Abstract]:Articulated rubber wheel car is a kind of special transportation vehicle in underground coal mine. It can directly transport mechanized coal mining equipment, hydraulic support, etc. There is no mechanical connection between steering gear and steering mechanism, and it is widely used in agricultural machinery, construction machinery, forklift truck and so on. The main problem in the steering system of articulated rubber wheel vehicle is that there is a pressure vibration in the steering system which seriously affects the performance of the steering system. Therefore, this paper takes the load sensing full hydraulic steering system of articulated rubber wheel vehicle as the research object, aiming at the pressure vibration and pendulum of the full hydraulic steering system of the articulated rubber wheel car, the research contents are as follows: starting with the hinged mode, By analyzing the hinge steering system, the factors influencing the steering cylinder pressure and the stroke difference of the steering cylinder are studied. In order to reflect the actual working conditions, AMESim was selected to model the two important components of the hydraulic steering system, the priority valve and the steering gear, and its performance was analyzed. The virtual prototype model of articulated rubber wheel car is established by using ADAMS. According to the AMESim hydraulic model of steering system and the virtual prototype model of carbody ADAMS, a complete simulation model of hydraulic steering system of articulated rubber wheel car is established, and the steering system is simulated and analyzed. It is found that there are more serious pressure oscillations in the steering process. Aiming at this problem, the optimum design of hinged steering system is carried out with the maximum stroke difference between left and right cylinder and the minimum cylinder pressure as the optimization objective, and the position of the hinge point of the cylinder as the design variable. The optimization results are verified by the combined simulation model of the hydraulic steering system of the articulated rubber wheel car. The simulation results show that the maximum pressure of steering system is reduced by 18.86, the amplitude of vibration and pendulum is reduced by 19.41, and the optimization effect is obvious.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD525
【参考文献】
相关期刊论文 前10条
1 陈艳梅;王俊元;杜文华;张鹏;宋宏宽;;铰接式胶轮车原地转向阻力矩与车轮转角关系研究[J];煤炭工程;2016年03期
2 南黄河;陈永峰;;铰接式胶轮车的驱动方式对转向性能的影响分析[J];煤炭科学技术;2015年08期
3 郝志军;;基于遗传算法的铰接转向机构优化设计[J];煤炭工程;2015年03期
4 洪如;王慈;;ZL15装载机铰接转向机构的优化设计[J];荆楚理工学院学报;2014年06期
5 樊文建;杨敬;权龙;;铰接式装载机转向特性的分析与试验研究[J];液压与气动;2014年09期
6 孟兆磊;姜勇;王娟;何建成;;基于AMESim的矿用汽车全液压转向系统建模与仿真[J];机床与液压;2014年10期
7 王同建;陈晋市;赵锋;赵庆波;刘昕晖;袁华山;;全液压转向系统机液联合仿真及试验[J];吉林大学学报(工学版);2013年03期
8 陈永峰;;铰接式防爆胶轮车转向运动学动力学分析与试验[J];煤炭科学技术;2012年07期
9 黄铁铮;李春英;;煤矿井下运煤车转向机构优化设计[J];机械工程与自动化;2011年06期
10 葛振亮;侯友山;姜勇;;工程车辆全液压转向系统管路特性分析[J];振动与冲击;2011年03期
，本文编号：2217031
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2217031.html
