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目前,国内大吨位轮胎式装载机的传动系统大多采用国外进口元件,行车和驻车制动系统均采用全液压湿式制动型式。988H型轮胎式装载机采用自主研发的驱动桥和变速器,行车制动采用常见的双管路气顶油钳盘式制动系统,驻车制动系统采用液压释放、弹簧制动型式,系统所用的驻车制动器系郑州宇通重工有限公司与江西萍乡制动器有限公司共同研发的新产品。介绍驻车制动系统的工作原理及驻车制动器的具体结构及维护保养方法。
At present, the transmission systems of large tonnage wheel loaders mostly adopt imported components from abroad, and all-hydraulic wet brake models are used for driving and parking brake systems. The 988H wheel loader adopts the self-developed drive axle and transmission. The service brake adopts the common double-pipe gas-top caliper disc brake system. The parking brake system adopts hydraulic release and spring brake type. The system uses Of the parking brake system Yutong Heavy Industries Co., Ltd. and Jiangxi Pingxiang Brake Co., Ltd. jointly developed new products. Describe the working principle of parking brake system and the specific structure of the parking brake and maintenance methods.