Bridge crane rail wheels gnawing reasons

1. Left and right wheel drive is not synchronized
Since two separately driven drive mechanism is not synchronized, so that the body take ramp and rail gnawing. This track is characterized by a bridge crane, gnawing at startup and braking, body torsion and gnawing rail.
2. Track deviation is too large
Since the track deviation caused by excessive eating is characterized by rail bridge crane, rail gnawing generated in some locations. If the track and the track span horizontal line of the poor, the overhead bridge crane  span the same premise, because the orbital rim side clearance will result in reduced rail gnawing; if two orbits relative elevation deviation is too large or the same side of two adjacent the top surface of the track is not in the same plane, are likely to cause gnawing rail.
3. Structural deformation
Large trolley wheels are fixed respectively at the end of the bridge beams and small frame side beam. So when the tray or small frame is deformed, will cause the wheels skew and span changes. The result of that gnawing rail, occurs in carts bridge, respectively, are illustrated.
(1) due to structural deformation caused by changes in the span of two wheels or four wheels super diagonal run caused by poor eating track.
(2) due to structural deformation caused by wheel vertical deflection caused by poor eating super track. When the wheels installed beyond the vertical deflection tolerances may cause gnawing rail.
(3) due to structural deformation procure end beam bridge generates horizontal bend, causing the wheel horizontal skew tolerance. Horizontal deflection caused by gnawing the wheel tracks, whether active or passive wheel wheel will have the same effect.
However, if the same side of the two wheels or two wheels on the same side, the horizontal deflection in the opposite direction, there is obviously offset by mutual neutralization, which adjust the wheel repair should be used.
4. Tapered tread wheel assembly errors
Centralized driven  bridge crane   in order to adjust to each other across the carts leading or lagging, to avoid running gnawing rail traveling mechanism of active wheel tread adopt 1:10 taper. Such a taper with the installation of the wheel in a certain direction, the direction of the taper of the two wheels to be opposite. If the assembly in the wrong direction, then the wheel will be ahead of the more advanced, more lag lag gnawing rail will be more serious, so there taper wheel during installation must be careful not installed wrong.