| 摘要 |
Improved support structure for the blade of a bulldozer and the like wherein a first push arm is attached for swiveling movement to the tractor frame near the rear end thereof and extends into swiveling connection with the blade and a second push arm is attached to the opposite side of the tractor frame for swiveling movement relative thereto and extends to the blade and is pivotally connected thereto. A second end of the second push arm has a pair of spaced pivotal connections to the blade to provide lateral stability between the blade and the second push arm. An adjustable strut mounted on the first push arm is pivotally connected with the blade. A tilt cylinder is mounted on the second push arm and is connected with the blade. Actuation of the tilt cylinder in cooperation with the strut causes tilting of the blade. Bending stresses are avoided in the push arms due to the swivel connection between the push arm and the tractor frame and the swivel connection between the first push arm and the blade.
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