| 摘要 |
PCT No. PCT/JP89/00705 Sec. 371 Date Jan. 7, 1991 Sec. 102(e) Date Jan. 7, 1991 PCT Filed Jul. 13, 1989 PCT Pub. No. WO90/00488 PCT Pub. Date Jan. 25, 1990.A crawler assembly aiming at preventing bogie wheels from detaching from a track, stabilizing the running of the bogie wheels and making it possible to use the crawler assembly for an endless rubber belt having core bars embedded therein and also for an endless iron caterpillar. The crawler assembly comprises a plurality of outer-flanged bogie wheels (3) each having flange portions (3b, 3b') formed on both outer sides of a central inner wheel portion so as to project radially; and an endless rubber belt 4' having core bars (10) embedded therein and which is wound round outside these outer-flanged bogie wheels, or an endless iron crawler track (1) provided with shoe links, and arrangement is made such that in the case of the rubber belt (4) the rolling surfaces of the flange portions of each of the outer-flanged bogie wheels are kept in contact with exposed stepped shoulder portions (13a, 13b, 13a', 13b') of the core bars (10), whilst in the case of the iron crawler track the rolling surfaces (3a) of the outer-flanged bogie wheels are kept in contact with the upper surfaces of the shoe links.
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