An automatic inspection and grouping of the bolsterspring is realized with PLC as the control unit and linear encoder and rotary encoder as the measuring units.
用PLC作为控制单元，光栅尺、编码器作为测量元件，实现枕簧的自动检测与分组。
2
The load spectrum of the bolsterspring is determined by means of establishing the mechanics model of bolster and spring of Zhuan 8a type bogie, and by using a known load spectrum of the bolster.
This paper sets forth the fact that the eccentric action of coil spring is an important factor in the causation of abnormal vibration of vehicle and severe wear on bolster guide.