초록 ▼

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 r

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.

대표청구항 ▼

An undercarriage structure for a tracktype machine having a main frame with said main frame having first and second sides and a vertically oriented centerline when said machine is viewed in a vertically oriented plane, said structure comprising: a first roller frame assembly spaced from and position

An undercarriage structure for a tracktype machine having a main frame with said main frame having first and second sides and a vertically oriented centerline when said machine is viewed in a vertically oriented plane, said structure comprising: a first roller frame assembly spaced from and positioned adjacent a first side of said main frame; a second roller frame assembly spaced from and positioned adjacent a second side of said main frame; a first pivot shaft pivotally connecting said first roller frame assembly to said first side of said main frame; a second pivot shaft pivotally connecting said second roller frame assembly to said second side of said main frame; and means for positioning said first and second roller frame assemblies at an angle relative to said centerline of said main frame in said vertically oriented plane.