Patent ID: 6719075
Filing Date: 2004-04-13
Classification: B62D

Abstract:
A bulldozer having a frame structure, the frame structure including left and right track frames and a vehicle body frame that are integrally formed into a rigid structure;the left and right track frames being parallelly arranged relative to each other and extending in a longitudinal direction of the frame structure, the left and right track frames respectively including a hollow structure extending in the longitudinal direction, the hollow structure being formed by vertically extending side walls joined together by a top wall, the left and right track frames being rigidly joined together by front and rear cross beams joined to one of the side walls of the left and right track frames; and the vehicle body frame including left and right vehicle body frame members parallelly arranged to the left and the right track frames between the left and the right track frames, the front and the rear cross beams passing through the left and right vehicle body frame members, and the left and right vehicle body frame members being rigidly joined to upper positions of the front and the rear cross beams.