目前,列车闸瓦与闸瓦托的连接是通过闸瓦钎来实现的,这种连接方法有两大缺点:更换闸瓦困难;连接可靠性差,容易造成闸瓦丢失。天津机务段设计出一种新型的闸瓦与闸瓦托连接机构——燕尾式连接机构,其特征在于闸瓦的一侧带有一用于与闸瓦托连接的燕尾体,燕尾体的中央开有用于穿插销钉的销孔。闸 At present, the connection between the train brake shoe and the brake shoe support is realized by brazing brakes. This connection method has two disadvantages: it is difficult to replace the brake shoe; the connecting reliability is poor and the brake shoe is liable to be lost. Tianjin locomotive depot designed a new type of brake shoe and brake shoe support mechanism - dovetail connection mechanism, characterized in that one side of the brake shoe is provided with a brake shoe for connecting the dovetail, the dovetail’s central opening There are pin holes for threading the pins. brake