Telescope - boom and crane with telescope - boom

摘要

The present invention relates to a telescope - boom (10) in particular for a crane (1). This telescope - boom (10) comprises a first and a second, elongated and a hollow arm segment (14,16), wherein the second arm segment (16) at least partially in the interior of the first arm segment (14) in the longitudinal direction between at least two positions is displaceably accommodated. The telescope - boom (10) further comprises a on the second arm segment (14) disposed bearing block (28), of the for the reversible locking of the second arm segment (16) in the respective control position on the first arm segment (14) at least one between a locked position (34) and a release position (36) has locking pin (30) is adjustable. Further comprises the telescope - boom (10) a on the inside towards the first and the second arm segment (14) arranged telescopic travel - cylinder (18), which is adapted to the second arm segment (16) with respect to the first arm segment (14) to displace. The bearing block (28) also has an actuating device (32) for adjustment of the lock pin (30) between the locked position (34) and the release position (36) on. This actuating device (32) is designed so that under coupling with a control line (38) of the telescopic travel - cylinder (18) to be controlled.n="33"