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US 9,175,484 B2Granted
Mobile concrete pump
AssigneePutzmeister Engineering GmbH
InventorDietmar Fuegel
Life of this patent
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AssigneePutzmeister Engineering GmbH
InventorDietmar Fuegel
Estimating the term…
The invention relates to a mobile concrete pump comprising a supporting structure (46) that is placed directly or indirectly by means of an assembly frame (22) on the running gear (12) of an HGV chassis (10), the supporting structure incorporating functional units that form a support device and a placing boom (36). The placing boom (36) is rotatably mounted on a boom pedestal (44). The boom pedestal (44) comprises a vessel (52) that is inserted in the supporting structure (46) and acts as a rotary bearing for the placing boom (36), while the support device has two support leg casings (54, 56) which are integrated into the supporting structure (46), cross over one another, have diagonal passages that are open at the front and have a telescopic support leg (40) in each support leg casing. A feature of the invention is that the supporting structure (46) has a polygonal opening (50) which is open at the top and runs parallel to the rotational axis (48) of the placing boom (36), while the contour of the vessel (52) of the boom pedestal (44) is adapted to the polygonal opening (50) and the vessel is inserted from above into the polygonal opening (50) of the supporting structure (46). To achieve a particularly favorable flow of forces in this construction between the placing boom (36) and the support legs (40), each of two lateral faces (68) of the vessel (52) which form an angle to one another is aligned parallel with a respective lateral wall (70) of each support leg casing (54, 56).
A mobile concrete pump with a carrying structure (46), capable of being placed directly or indirectly via a mounting frame (22) onto a running gear (12) of a motor truck chassis (10), for the accommodation of functional units forming a supporting device and a distributor mast (36), the distributor mast (36) being mounted rotatably on a mast trestle (44) which comprises a shell (52) inserted into the carrying structure (46) and equipped as a rotary bearing for the distributor mast (36), and the supporting device comprising two mutually intersecting supporting leg boxes (54, 56) integrated in the carrying structure (46) and open diagonally forward and in each case a supporting leg (40) arranged telescopically in the supporting leg boxes (54, 56), wherein the carrying structure (46) has an upwardly open polygonal orifice (50) oriented parallel to the axis of rotation (48) of the distributor mast (36), wherein the shell (52) of the mast trestle (44) has a polygonal contour adapted to the polygonal orifice (50) and is inserted into the polygonal orifice (50) of the carrying structure (46), and wherein the shell (52) is oriented with two of its side faces (68) parallel to a side wall (70) of one of the supporting leg boxes (54, 56) in each case.
Dependencies are inferred from the claim text.