MAMMOTH CRAWLER TRUCK DEVICE FOR USE IN MARSHY GROUND

摘要

PURPOSE:To allow very uniform load application to the whole contact area of a crawler by a method wherein bogie members provided with a plurality of members of roller wheels are supported pivotally. CONSTITUTION:Pivots 4 and 4 are transversely provided respectively at the longitudinally opposite ends of a track frame 1 to pivotally support the midways of bogie members 3a and 3b. Pivots 6,... are transversely provided respectively at the longitudinally opposite ends of each of the both members 3a and 3b to pivotally suppoet the midways of auxiliary bogie members 5a, 5b, 5c and 5d. A plurality of numbers of the roller wheels 7 are rotatingly provided longitudinally below said members 5a, 5b,.... The crawler 10 is wound around a sprocket wheel 9, an idler 8, the carrier roller 7 and the upper edge of the track frame 1.