| 摘要 |
<p>The chassis of a moving crane (4) is provided with middle (1), rear (2) and front (3) bearing members. The middle bearing members (1) with double casing are arranged between the anterior rear wheels (7) and the posterior front wheels (8) and form the larger bearing width (1) which is at least 1.66 times bigger than the bearing width (b) of the rear bearing members (2) with single casing. The front bearing members (3) are comprised of only two vertical cylinders (11 + 12) and may not be telescopically extended perpendicularly to the longitudinal axis (X) of the frame. On the circumference (10), established in relation to the rotation center (A), there are at least five out of the six vertical cylinder centers (11, 13, 14, 15) of the three bearing members (1, 2 and 3).</p> |
