Patent ID: 6334496
Filing Date: 2002-01-01
Classification: B62D

Abstract:
A crawler device suitable for use on a crawler vehicle having a pair of crawler devices on at least one of a front portion of said vehicle and a rear portion of said vehicle, said crawler device comprising:a truck frame; a sprocket, being a driving wheel; at least one idler, being a driven wheel and being disposed on said truck frame; a crawler belt passed around said sprocket and said at least one idler as an endless loop; a front end link coupled to a forward portion of said truck frame by a pin located at a lower end portion of said front end link; said front end link being adapted to be coupled to a body side of the vehicle by a pin located at an upper end portion of said front end link; and a rear end link coupled to a rearward portion of said truck frame by a pin located at a lower end portion of said rear end link, said rear end link being adapted to be coupled to said body side at a position behind said front end link by a pin located at an upper end portion of said rear end link, wherein a quadric link structure, which is formed by said body side, said truck frame, said front end link, and said rear end link, has a length on said truck frame which is shorter than its length on said body side.