| 摘要 |
<p>The bulldozer blade control mechanism has a U-shaped frame (22) fixed to the lower intermediate portion of the rear surface of a blade (20) so that the frame can be turned in all directions. Left and right lifting and angling hydraulic cylinders (62,64) are fixed pivotably between the left and right lower portions of the rear surface of the blade, and the left and right portions of a chassis via arms (36,38). Left and right pitching and tilting hydraulic cylinders (40,42) are fixed pivotably to between the portions of the arms, which are in the vicinity of the rear ends, and the left and right upper portions of the rear surface of the blade. Left and right levers (56,58) are fixed pivotably to between the left and right parallel leg portions of the U-shaped frame and either of left and right angling hydraulic cylinders and left and right arms (36,38).</p> |
