The phenomenon of a stainless steel manual trolley "gnawing" on the track, technically known as "wheel啃轨," can be caused by several factors. Here are the main reasons:

1. Wheel Processing or Installation Defects

Manufacturing Errors: If the wheels are not manufactured to precise specifications, such as having uneven tread diameters or poor concentricity, they may deviate from the track during operation.

Installation Errors: Improper installation of wheels, such as misalignment with the track or uneven tightening of bolts, can lead to uneven pressure distribution and cause the wheels to gnaw on the track.

2. Track Installation Deviations

Height Differences: Significant height differences between the two tracks can cause the trolley to shift laterally during operation. The wheel flange on the higher track may rub against the outer edge of the rail, while the flange on the lower track may rub against the inner edge.

Uneven Track Surfaces: If adjacent rails on the same side are not level, the trolley may tilt when passing over joints, leading to gnawing.

3. Drive System Issues

Gear Gap Differences: In separately driven systems, differences in gear gaps or loose keys can cause speed differences between wheels, leading to lateral movement and gnawing.

Brake Adjustment: Uneven brake adjustment can cause one side to brake more tightly than the other, pulling the trolley sideways and causing gnawing.

4. Metal Structure Deformation

Frame Distortion: Deformation of the trolley frame, such as diagonal偏差, span偏差, or straightness偏差, can alter the wheelbase and cause misalignment with the track.

5. Track Irregularities

Vertical and Horizontal Deviations: Tracks may have vertical or horizontal deviations from the ideal geometric shape due to construction errors, settlement, or wear. These deviations can force the wheels to gnaw on the track.

Surface Defects: Oil, water, ice, or debris on the track can cause wheels to slip, leading to lateral movement and gnawing.

6. Uneven Load Distribution

Load Concentration: If the load is not evenly distributed on the trolley, it can cause the wheels to bear uneven pressure, leading to lateral movement and gnawing.

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