Concrete dispensing boom for concrete pumps

Patent metadata

Field	Value
Publication number	US-9512628-B2
Application number	US-201514610654-A
Country	US
Kind code	B2
Filing date	Jan 30, 2015
Priority date	Aug 2, 2012
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A concrete dispensing boom for stationary and mobile concrete pumps has a plurality of boom arms, connected to one another at joints, and a concrete conveying line consisting of a plurality of pipe segments preferably connected to one another in an articulated manner via pipe bends and rotary couplings. Said pipe segments run along the individual boom arms and are attached to these boom arms. At least one of the boom arms has a hollow chamber profile which has at least two hollow chambers separated from one another by a separating wall, at least one of which chambers is a closed chamber and one is open at the periphery. The pipe segment allocated to the boom arm concerned is disposed on the opening side outside, partially inside or inside the open hollow chamber.

First claim

What is claimed is:

1. A concrete dispensing boom for static and mobile concrete pumps, comprising:
multiple boom arms connected to one another at joints, the boom arms being positionable such that the boom arms extend at least partially in a horizontal direction;
a concrete delivery conduit comprising multiple pipe segments which are connected to one another by pipe bends and rotary couplings, the pipe segments being guided along and fastened to the individual boom arms;
one of the multiple boom arms having a profile defining two hollow chambers separated from one another by a partition, one of the two chambers being closed and the other chamber being open, wherein the pipe segment associated with the one boom arm is arranged outside, partially within or entirely within the open hollow chamber;
further wherein:
the open hollow chamber has a trapezoidal or triangular cross section;
the one boom arm has a box-shaped form;
the partition is set back in the open hollow chamber; and
the partition comprises a first side wall and the one boom arm comprises a second side wall parallel to the first side wall, the second side wall delimiting the closed hollow chamber, the open hollow chamber being defined by the partition, laterally extending portions of the boom arm and a straight line extending from a laterally outer edge of the boom arm above the partition to a laterally outer edge of the boom arm disposed below the partition.

2. The concrete dispensing boom as claimed in claim 1 , wherein the one boom arm is configured as a box with an upper flange and a lower flange and wherein the laterally outer edge of the boom arm above the partition is defined by the upper flange and the laterally outer edge of the boom arm disposed below partition is defined by the lower flange.

3. The concrete dispensing boom as claimed in claim 2 , wherein the upper flange and the lower flange together with the first side wall and the second side wall define the closed hollow chamber, and the first side wall together with the upper flange and the lower flange form the open hollow chamber.

4. The concrete dispensing boom as claimed in claim 3 , wherein the first side wall and/or the second side wall have/has an attachment section configured to be pre-mounted on the upper flange and/or on the lower flange.

5. The concrete dispensing boom as claimed in claim 3 , wherein the concrete delivery conduit is led from one side of the boom arm to an opposite side of the boom arm through the first side wall and through the second side wall.

6. The concrete dispensing boom as claimed in claim 3 , wherein the boom arm has a cranked section, and the concrete delivery conduit is led from one side of the boom arm to an opposite side of the boom arm through the first side wall and through the second side wall in the cranked section.

7. The concrete dispensing boom as claimed in claim 3 , wherein the concrete delivery conduit is fixed to the first side wall or to the second side wall by one or more pipe brackets.

8. The concrete dispensing boom as claimed in claim 3 , wherein the second side wall is set back in relation to the upper flange and the lower flange and, together with the upper flange and the lower flange and a straight line that extends from an edge of the upper flange to an edge of the lower flange, forms a further open hollow chamber.

9. The concrete dispensing boom as claimed in claim 8 , wherein the further open hollow chamber has a trapezoidal or triangular cross section.

10. The concrete dispensing boom as claimed in claim 3 , wherein the first side wall and/or the second side wall is perpendicular to the upper flange and/or to the lower flange.

11. The concrete dispensing boom as claimed in claim 3 , wherein the spacing of the first side wall from the second side wall varies across the boom arm.

12. The concrete dispensing boom as claimed in claim 3 , wherein the upper flange and/or the lower flange has a flange edge, the spacing of which from the first side wall and/or from the second side wall assumes different values in a longitudinal direction of the boom arm.

13. The concrete dispensing boom as claimed in claim 2 , wherein the upper flange and the lower flange are arranged parallel to one another.

14. The concrete dispensing boom as claimed in claim 2 , wherein the upper flange and the lower flange taper toward one another.

15. The concrete dispensing boom as claimed of claim 1 , wherein the boom arm which has the hollow chamber profile is formed at least partially of a fiber composite plastic or of metal.

Assignees

• Putzmeister Engineering Gmbh

Inventors

• David Ciprian
• Neubert Michael
• Hasel Peter

Classifications

• E04G21/0436

  on a mobile support, e.g. truck · CPC title

• Y10T137/8807

  Articulated or swinging flow conduit · CPC title

• E04G21/0427

  on a static support, e.g. crane · CPC title

• E04G21/0445 Primary

  with booms · CPC title