【摘要】 介绍了货车采用空重车调整装置的必要性，装置的工作原理和分类，并就国内空重车调整装置的现状及发展方向作了分析更多还原

【Abstract】 In this paper,the necessity of adopting empty and loaded freight car brake regulator,its working principle and classification are introduced,and the current conditions and development orientation of empty and loaded car brake regulators at home are analysed.更多还原