Patent ID: 7083002

Claim:
A blade mounting structure of a bulldozer, comprising: a set of left and right straight frames which swingably connect a left portion and a right portion of a blade to a left portion and a right portion of a vehicle main body, wherein only a single one of the left and right straight frames has an additional connection to the blade; and a single arm to provide said additional connection between said single one of the set of left and right straight frames and the blade; wherein said single arm is swingable up and down and to a left direction and a right direction; and wherein a connecting point of the arm and the blade is provided at an upper position with respect to an axis line which connects horizontal axes of rotation of connecting points of the set of left and right straight frames and the blade in a rear view of the blade mounting structure; and wherein the connecting point of the arm and the blade is provided on the axis line which connects the horizontal axes of rotation of the connecting points of the set of left and right straight frames and the blade in an overhead plane view of the blade mounting structure.