TRIANGULAR RUNNING CRAWLER BELT DEVICE AND CONSTRUCTION MACHINE MOUNTING THIS TRIANGULAR RUNNING CRAWLER BELT DEVICE

摘要

PROBLEM TO BE SOLVED: To decrease a gage width of a rubber crawler belt and a body with and improve advancing/carrying performance in a narrow site, by arranging a bearing supporting a track frame outside a body relating to a sprocket. ;SOLUTION: A track frame part, providing a sprocket part 20 in an intermediate upper part of a front/rear idler part, comprises a track frame and a frame use bearing 34. The track frame comprises a frame and a track case 33 integrally formed with the frame. A frame bearing 34 is stored in the inward of the track case 33, and a hub 24 of the sprocket part 20 is supported by the frame bearing 34. The frame bearing 34 is arranged in the outward of a body relating to a first sprocket 23, to be stored in a bearing chamber Ba formed by the track case and the hub 24. When the frame bearing 34 supporting swiveling of the track frame part is arranged in the outside of a body of the first sprocket 23, a gage width Ga of a rubber crawler belt 100 can be made smaller than when the bearing is arranged in the inward.;COPYRIGHT: (C)1997,JPO