| 摘要 |
An undercarriage structure for a track-type machine having a main frame includes first and second track roller frame assemblies, one positioned on each side of the main frame, and connected to the main frame by one or more pivot shafts. The first and second roller frames are positioned at an angle relative to the main frame in a vertically oriented plane to produce a substantially negative camber angle at zero vertical load on the roller frames. The camber angle cycles between negative and positive during loading of the roller frames within the working range of the machine. This results in the rails of the endless track contacting the track rollers in different areas and prolongs the wear life of the endless track.
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