Patent ID: 6848757
Filing Date: 2005-02-01
Classification: B62D,Y10S

Abstract:
1. An elastic crawler traveling apparatus comprising: an elastic crawler in a shape of an endless belt formed of an elastic material, a sprocket for a crawler belt arranged to be brought into contact with an inner face of the elastic crawler, a driven wheel; and a rolling wheel, wherein the elastic crawler comprises a belt main body; a plurality of projections formed to project at intervals therebetween along a peripheral direction of the elastic crawler on the belt main body; and a tension member embedded in an inner portion of the belt main body for restricting elongation of the belt main body, wherein the sprocket for the crawler belt comprises a contact portion to contact the belt main body, the contact portion having a contact width which is greater than a root width of the projections in a belt width direction of the elastic crawler; wherein the sprocket for the crawler belt comprises a plurality of drive tooth portions for engaging with the projections, a barrel portion main body being integrally formed with the drive tooth portions; wherein each pair of the projections that is adjacent in the peripheral direction of the elastic crawler has a valley portion formed therebetween as an engaging groove for being engaged by the drive tooth portions; and wherein the drive tooth portions comprise a driving portion to be engaged with the engaging groove in the peripheral direction of the elastic crawler; and a guide portion to be engaged with the projections in the belt width direction for restricting shifting of the drive tooth portions and the projections in the belt width direction relative to each other.