Patent ID: 8702183
Filing Date: 2014-04-22
Classification: B62D

Abstract:
1. A running device for a track-laying vehicle comprising: a pair of track frames disposed at right and left regions of the track-laying vehicle; an idler rotatably supported in one end portion of the track frame; a sprocket disposed at the other end portion of the track frame, the track frame, the idler, and the sprocket being arranged substantially along a straight line, wherein the sprocket is configured to be rotatably driven; a double-bogie device comprising: a crawler entrained about the idler, each of the lower track rollers, and the sprocket, the crawler comprising shoe plates and connecting links fixed to the shoe plates, the connecting links being pivotally connected to each other to form an endless link chain, wherein adjacent connecting links of the crawler pivot to a maximum crossing angle, wherein the maximum oscillation angle is greater than the maximum crossing angle, and wherein a spring constant of the double-bogie device when the crawler is at a maximum reverse camber is substantially equal to a spring constant of the double-bogie device when the crawler is at a flat state.