| 摘要 |
A method produces a mast arm with a mast arm body and with at least one pipe holder for a concrete-distributing mast for use on stationary and mobile concrete pumps with a plurality of mast arms which are connected to one another so as to be pivotable on articulated joints about an axis of articulation and which hold a concrete-conveying line which has at least one rotary joint which has an axis of rotation aligned with an axis of articulation of an articulated joint. The at least one pipe holder here has a pipe support section which serves for receiving the concrete-conveying line at a holding point which has a location predetermined by the position of the axis of articulation. The mast arm body is premanufactured with a receiving intersection and the at least one pipe holder is premanufactured with a fastening section which has a connecting intersection. The receiving intersection is produced with at least three position reference points which define a plane, are independent of manufacturing tolerances of the mast arm body and are predetermined by the position of the axis of articulation, and the connecting intersection is formed with at least three position reference points which define a plane and predetermine the position of the pipe support section, in such a manner that, by connection of the pipe holder by the connecting intersection thereof to the receiving intersection of the mast arm body, the concrete-conveying line can be received by the pipe support section in such a manner that the holding point is located at the location predetermined by the position of the axis of articulation. |
