Telescope - boom and crane with telescope - boom

摘要

The present invention relates to a telescope - boom (10) in particular for a crane (1), as well as a crane (1) with such a telescope - boom (10). The telescope - boom (10) in this case comprises a first, elongated and a hollow arm segment (14,16,20) and a second, elongated and a hollow arm segment (16,20). The latter is at least partially in the interior of the first arm segment (14,16,20) along at least one received and on an inner side of the first arm segment (14,16,20) guide surface (32,38) formed in the longitudinal direction (18) is mounted so as to be displaceable. The telescope - boom (10) also comprises a on the inside towards the first and the second arm segment (14,16,20) arranged telescopic travel - cylinder (22), which is adapted to the second arm segment (16,20) with respect to the first arm segment (14,16,20) to displace. Furthermore, the telescope - boom (10), a lubricating device (50), which, on the telescopic travel - cylinder (22) is arranged and which is adapted to, during a displacement movement of the telescopic travel - cylinder (22) a lubricant on the at least one guide surface (32,38) of at least the first arm segment (14,16,20) to apply.n="28"