| 摘要 |
<p>A travelling crane (1) comprising a cross beam (2), a first suspension rail (4), a second suspension rail (6) and a lifting tackle (24) movably coupled to the cross beam (2) , where the cross beam (2) is coupled to the respective suspension rails (4, 6) by a first set of wheels (12) and a third set of wheels (18) , and where at least one of the sets of wheels (12, 18) is rotatably coupled to a second set of wheels (14) coupled to the cross beam (2) in a longitudinally movable manner.</p> |
