| 摘要 |
The invention relates to car building. A rail vehicle bogie comprises a frame, which rests by the first stage of suspension on axle boxes of wheel pairs, and a bolster, which serves for connection with the car body and rests on the frame by the second stage of suspension. The retention of upper supporting turns of the springs of the second stage of suspension is ensured by pivots, which are located in the supporting cones of the bolster, pass through cylindrical resin-metal devices and adjusting plates and are located in the appropriate openings of the upper centering device. The latter by its one working surface rests on the upper supporting turn of the spring, and by second surface, which is made in the form of cylinder with the diameter, which is equal to the inside diameter of spring, is tightly located in the spring. Lower centering device is connected to the lower supporting turn of the spring in the same manner, but has a rod of cylindrical form, which is placed in the appropriate opening of the center section of the lower sheet of the frame side rails. Between bearing surface of the lower centering device and lower sheet of the frame side rails a "third phase" is introduced, which ensures increased sliding of bearing surfaces. The technical result is in protection of the springs of central suspension against the action of torsional forces relative to the vertical axis.
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