Mobile concrete pump with distributing boom and support device
A mobile concrete pump with a support structure, which can be placed on a vehicle frame of a truck chassis, for receiving functional units which form a support device and a distributing boom. The functional unit which forms the distributing boom has a rotary head mounted on a boom pedestal in a rotatable manner about a vertical axis, the boom pedestal being secured to the support structure, and the boom pedestal comprises a tank which engages into the support structure and is provided as a rotary bearing for the rotary head. Each functional unit which forms the support device has a support leg mounted in a bearing in a pivotal and/or telescopable manner, the bearing being secured to the support structure. A tank wall of the tank tapering from the top to the bottom in a truncated cone-like manner or in a truncated pyramid-like manner in the cross section, engages into the support structure and is rigidly secured, preferably welded, into the support structure.
1. A mobile concrete pump, comprising:
a support structure configured for placement on a vehicle frame of a truck chassis;
a boom pedestal secured to the support structure;
a distributing boom rotatably mounted about a vertical axis on the boom pedestal via a rotary head;
a shell which engages in the support structure, the shell comprising a rotary bearing for the rotary head;
a bearing secured to the support structure; and
a support leg mounted in the bearing;
wherein the shell has a shell wall which tapers from top to bottom in the shape of a truncated cone or truncated pyramid, engages in the support structure and is rigidly inserted therein.
2. The concrete pump as claimed in claim 1 , wherein the shell has a vertical through-opening for the passage of a concrete conveying line.
3. The concrete pump as claimed in claim 1 , further comprising a bearing arm welded onto the shell, the bearing being arranged on the bearing arm and being spaced apart from the shell wall, the support leg being pivotably mounted in the bearing about a vertical axis.
4. The concrete pump as claimed in claim 3 , wherein the bearing comprises two bearings spaced apart and the support leg comprises two support legs, each of the support legs being pivotably mounted to a respective one of the bearings.
5. The concrete pump as claimed in claim 1 , wherein the shell wall forms a truncated cone or a truncated pyramid with an abutment surface which is open downwardly and rises obliquely in the direction of travel of the concrete pump.
6. The concrete pump as claimed in claim 5 , wherein the shell is supported by the oblique abutment surface on a support frame of the support structure rising obliquely in the direction of travel.
7. The concrete pump as claimed in claim 1 , wherein the support leg comprises a front support leg having a plurality of telescopic members and a cylinder connected thereto, the cylinder being arranged between the front support leg and the conical shell in a free space delimited in part by the conical shell.
8. The concrete pump as claimed in claim 7 , wherein the front support leg comprises two front support legs and the cylinder comprises two cylinders, each cylinder being arranged between a respective one of the front support legs and the conical shell in the free space.