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 989-2006 》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。

Trackless vehicles on the mechanized face are widely used due to the rapid development of the coal mining industry. Because the accidents about the misfunction of its dry brake occu- rred frequently, the trackless rubber-tyred locomotive must be equipped with the wet brake when its load beyond 2 tons according to “general specification of the trackless rubber- tyred vehicle for mine explosion-proof diesel engine standard MT T 989-2006”. Recently, the domestic research on wet braking device is immature and the used wet brake is the ordinary wet multiple disk brake and the wet multiple disk pressure loss brake. The applications of the multifunctional wet multi-disc brake are not widely opened yet, because of its complexity of structure. However, there must be a bright prospect for the multifunctional wet multi-disc brake, because it is safer and more reliable brake comparing with other types. The main research work is as follows: （1）The required braking torque of the braking device was calculated. The structure optimization design of the multifunctional wet multi-disc brake has been completed in case of the death of the static friction plate and the difficult maintenance. he designed brake braking performance was checked. The finite element analysis of significant elements was completed by Solidworks in order to test the feasibility of design. (2) The overall scheme of the hydraulic brake control system of the multifunctional wet multi-disc brake has been designed The types of the double brake valve, double prefill valve, valve handle and accumulator are selected to satisfy the requirements of braking performance based on the brakes’ parameters. (3) The structure and mathematical model of the double brake valve, double prefill valve and the multifunctional wet multi-disc brake were analyzed and the model was established by the HCD in the AMESim. Beside, the model of the whole hydraulic brake control system was established by HYD database. Finally, all the simulation models were analyzed in order to verify the reliability. (4) The overall scheme of the experiments was designed. The experimental brake control system platform was established and verified. From the comparison of experimental results and simulation, it can be demonstrated that the designed multi-function wet brake and hydrau- lic brake control system meet the requirements.