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根据我国铁路客运现代化的需要,我厂在近两年设计、制造了一批长25.5米的新型软席可躺座车和硬席卧车。这批客车的转向架上装有盘形制动机,并使用HZ408配方的合成塑料闸瓦。这种闸瓦由塑料摩擦板和钢背两部分组成,如图1所示。闸瓦钢背由厚度为3毫米的普通碳素钢板压成,呈燕尾形,以便与闸瓦托连结。为
According to the needs of the modernization of China’s railway passenger transport, I plant in the past two years the design and manufacture of a number of 25.5 meters long new seats reclining seats and seats sleeper car. The bogies of these buses are equipped with disc brakes and synthetic plastic brake shoes using the HZ408 formula. This type of brake shoe consists of a plastic friction plate and a steel back, as shown in Figure 1. Brake shoe steel back is made of ordinary carbon steel plate with a thickness of 3 mm, in a dovetail shape so as to be connected with the brake shoe bracket. for