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1前言我段现运用的东方红（21）型米轨内燃机车所使用的JZ-7C型制动机是考虑米轨机车牵引车辆较少、列车较短的特点，在JZ－7型制动机基础上采用JZ-6型制动机分配阔设计的。其分配阔系两压力式，另设有作用间，制动缸压力可不随制动缸容量的变化而改变，无论连挂位置如何，都能
1 Foreword I paragraph is now used Dongfanghong (21) -type rail diesel locomotive JZ-7C used in the design of the brake system is to consider the small number of tractor lorry locomotives, short trains, JZ-7 type brake Based on the use of JZ-6-type brake distribution wide design. The distribution of wide two pressure type, and the other with the role of room, brake cylinder pressure does not vary with the brake cylinder capacity changes, regardless of even the location of the link, can