| 摘要 |
<p>A mobile concrete pump comprising at least five mast arms ( 1 to 7 ) which are pivotable relative to each other about horizontal rotation axes (B to G). The first respective mast arm is hinged to a mast block ( 22 ) so as to be pivotable about a horizontal rotation axis (A), said mast block being rotatable about a vertical axis ( 20 ), while one end of the last mast arm has no joint. In order to be able to add other mast arms in a modular manner, a first Z-type folding group comprising the last three mast arms, a first coil-type folding group comprising the penultimate, third to last and fourth to last mast arm, and a second Z-type folding group comprising the third to last, fourth to last, and fifth to last mast arm are provided in a preferred embodiment. The basic configuration can be complemented with additional mast arms by having a sixth to last mast arm form a Z-type folding group consisting of four mast arms along with the third to last, fourth to last, and fifth to last mast arm while a seventh to last mast arm forms a second coil-type folding group together with the fifth to last and sixth to last mast arm.</p> |
