| 摘要 |
<p>The telescopic element is used as jib especially in mobile cranes, has outside tube with inside tube adjusted by drive. Specified extended lengths are readily ensured. The drive arrangement consists of two series arranged feed units (3, 4) which via a piston cylinder unit (5) are connected to inner tube (2). Each of these feed units has a clamping pad (10) which are in alternating steps fixed in the outside tube (1). The front feed unit is connected directly on the inner tube (2). A linear motor is connected on the fornt (3) and on the rear feed unit (4). Both feed units can be connected each by a linear motor on the inner tube.</p> |
