| 摘要 |
The invention relates to an automotive concrete pump with a chassis (10), with a concrete-distributing boom (15) which is arranged on a chassis-mounted rotary unit (14) so as to be rotatable about a vertical axis of rotation, with a core pump (16) which is arranged on the chassis (10) and which is connected on the delivery side to a concrete-conveying line guided via the concrete-distributing boom (15), and with a supporting construction (18). The supporting construction (18) has, on each side of the chassis (10), a respective first and a second supporting arm (20, 22) which can be pivoted about a vertical pivot axis under the action of a respective hydraulic setting-out mechanism between a transport position in which they are folded in with respect to the chassis (10) and at least two supporting positions in which they are folded out relative to the chassis (10). A particular feature of the invention consists in the fact that at least one of the hydraulic setting-out mechanisms is formed as a pivoting cylinder pair (36, 37) with two differential cylinders (52, 54) rigidly connected to one another on the ground side. Here, the differential cylinders (52, 54) of the pivoting cylinder pair (36, 37) expediently have piston rods (56, 58) which are aligned with one another and project on opposite sides beyond the associated cylinder. |
