| 摘要 |
The invention relates to a support boom for mobile working machines, especially for mobile concrete pumps. The support boom (20) has a boom body (38) that can be rotated around a vertical swiveling axis (32) on an undercarriage (10), a telescopic part (40) that can be telescopically displaced relative to the body of the boom, a dual-acting hydraulic cylinder (42) that passes through the body of the boom (38) and the telescopic part (40), in addition to a foot part (26) that can be displaced vertically and is arranged on the front end of the telescopic part (40). Both ends of the telescopic hydraulic cylinder (42) are fixed on fixing points (46,50) in the area of the opposite ends of the body of the boom (38) and the telescopic part (40). In order to reduce the required space in transport position and during deployment of the support boom while ensuring stable support, the vertical swiveling axis (32) is formed by a stowage location that is divided into a single row and is arranged at an axial distance (S) from the rear fixing point (46) in the direction of the foot part on the body of the boom (38), said location being positioned in such a way that it cuts the displacement axis (52) of the hydraulic cylinder (42) transversely. |
