矿用胶轮车全液压多功能湿式制动器控制系统研究

发布时间：2018-03-26 20:39

本文选题：多功能湿式制动器　切入点：液压制动控制系统　出处：《西安科技大学》2017年硕士论文

【摘要】：伴随着采煤业的快速发展,矿用无轨胶轮车得到了广泛的应用,但由于其干式制动器失效事故频发,《矿用防爆柴油机无轨胶轮车通用技术条件标准MT T 959-2006》要求载重量2t(含2t)以上的无轨胶轮车应采用湿式制动方式。目前国内湿式制动器研究时间较短,所使用的湿式制动器主要是普通型湿式多盘制动器和失压型湿式多盘制动器。多功能湿式多盘制动器由于结构相对复杂,市场应用不多,但较其他湿式制动器具有安全、可靠的制动性能,因此具有广阔的使用前景。主要研究工作如下:(1)计算制动器要求的制动力矩,对多功能湿式多盘制动器进行结构优化设计以避免静摩擦片卡死现象,使后期维护更加方便,验算所设计制动器的制动性能,运用Solidworks对关键元件进行应力应变有限元分析。(2)对多功能湿式多盘制动器的配套液压制动控制系统进行总体方案设计,根据所设计制动器的参数对双路制动阀、双路充液阀、手柄阀、蓄能器等关键液压元件进行选型设计,以满足制动性能和制动次数要求。(3)对双路制动阀、双路充液阀和多功能湿式多盘制动器的结构和数学模型进行分析,利用AMESim中HCD设计库对其进行建模,然后利用HYD库对整个液压制动控制系统进行建模,最后对不同状态下仿真模型进行分析,验证该系统性能的可靠性。(4)设计实验系统总体方案,搭建制动控制系统实验平台,进行实验验证,实验与仿真结果对比分析表明所设计多功能湿式多盘制动器和液压制动控制系统满足要求。
[Abstract]:With the rapid development of coal mining industry, mining trackless rubber wheel car has been widely used. However, due to the frequent failure accidents of dry brake, the general technical condition of mine explosion-proof diesel trackless rubber wheel vehicle (MTT959-2006) requires that the trackless rubber wheel vehicle with a load of more than 2t (including 2t) should adopt wet braking mode. At present, the domestic wet braking mode is required for the trackless rubber wheel vehicle with heavy load of more than 2t (including 2t). The research time of type brake is short, The wet brakes used are mainly common wet multi-disc brakes and depressurized wet multi-disc brakes. Due to the relative complexity of the structure, the multi-function wet multi-disc brakes are not widely used in the market, but they are safer than other wet brakes. Because of its reliable braking performance, it has broad application prospects. The main research work is as follows: 1) calculating brake torque required by brake and optimizing the structure of multi-function wet multi-disc brake to avoid static friction plate sticking. Making the later maintenance more convenient, checking the braking performance of the brake designed by the Institute, using Solidworks to carry out the stress and strain finite element analysis of the key components. (2) the overall scheme design of the supporting hydraulic brake control system of the multi-function wet multi-disc brake is carried out. According to the parameters of the designed brake, the key hydraulic components, such as double-channel brake valve, double-channel filling valve, handle valve, accumulator and so on, are selected and designed to meet the braking performance and braking times. The structure and mathematical model of two-way liquid filling valve and multi-function wet multi-disc brake are analyzed. The model is modeled by HCD design library in AMESim, and then the whole hydraulic brake control system is modeled by HYD library. Finally, the simulation models in different states are analyzed to verify the reliability of the system. The overall scheme of the experimental system is designed, and the experimental platform of the braking control system is built, and the experimental verification is carried out. The experimental and simulation results show that the multi-function wet multi-disc brake and hydraulic brake control system meet the requirements.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD525;TP273

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