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近年来在铁道车辆上,作为车体支承装置的二系弹簧悬挂,基本上是采用空气弹簧的方式。这种方式是通过空气弹簧本体及与之连通的辅助空气腔中的空气,实现柔软的弹簧特性。在连接空气弹簧气囊与辅助空气腔的空气通路上,设置固定节流阀,来控制弹簧的衰减,可以提供良好的乘坐舒适度
In recent years, on railroad cars, the suspension of the secondary system as a vehicle body support device has basically adopted the air spring method. In this way, soft spring characteristics are realized by the air spring body and the air in the auxiliary air chamber communicating therewith. In the air path connecting the air spring airbag and the auxiliary air chamber, a fixed throttle is provided to control the attenuation of the spring to provide good riding comfort