Concrete pump with distributing boom

Patent metadata

Field	Value
Publication number	US-9546649-B2
Application number	US-201314651703-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Dec 28, 2012
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A work device has a stationary or movable frame which has a substructure fixed to the frame, a rotating head rotatable about a vertical rotational axis on a bearing block of the substructure by a drive mechanism, and an extension arm mounted on a bearing point of the rotating head in a pivotal manner about a horizontal pivot axis. A hydraulic cylinder piston unit has ends fixed to the cylinder and to the piston rod and hinged to hinge points on the extension-arm side and on the rotating-head side with a horizontal hinge axis. The rotating head has a base section arranged on the bearing block and an adapter piece including the bearing point for the extension arm and the hinge point on the rotating-head side for the cylinder piston unit. The base section and the adapter piece can be removably coupled to each other via a separating point.

First claim

The invention claimed is:

1. A concrete pump having a stationary or mobile frame with a sub-structure which is fixed to the frame, having a rotating head which is mounted on a bearing block of the sub-structure so as to be rotatable by means of a drive mechanism about a vertical rotation axis, having an outrigger which is configured as a concrete distributing boom and supports a conveying line and which is articulated on a bearing point of the rotating head so as to have a horizontal pivot axis, and having a hydraulic cylinder-and-piston unit which by way of sits ends which are fixed to a cylinder and to a piston rod, respectively, is articulated in each case on one outrigger-side and rotating head-side articulation point which is disposed so as to be spaced apart from the bearing point and has in each case a horizontal articulation axis, wherein the conveying line by way of a supply pipe which is fixed to the sub-structure and a connection pipe which penetrates centrally through the rotating head is impingeable with liquid concrete, said connection pipe on its one end by way of a rotating joint which is coaxial in relation to the vertical rotation axis of the rotating head is connected to the supply pipe and on its other end by way of a rotating joint which is coaxial in relation to the horizontal pivot axis of the outrigger is connected to an outrigger-side conveying line, wherein the rotating head has a base part which is disposed on a bearing block and an adaptor piece which comprises the bearing point for the outrigger and the rotating head-side articulation point for the cylinder and piston unit, wherein the base part and the adaptor piece are releasably intercoupled by way of a separation point, wherein the connection pipe is subdivided into a first part-pipe which is connected to the base part and connected to the supply pipe and a second part-pipe which is connected to the adaptor piece and connected to the outrigger-side conveying line, wherein the first and the second part-pipes by way of a pipe coupling are releasably intercoupled in the separation point, and wherein the base part and the adaptor piece on their separation point have coupling elements which in pairs are interconnectable in a form-fitting manner, wherein a first group of coupling elements are configured as drop-in elements and a second group of coupling elements are configured as receptacles for the drop-in elements, and wherein the adaptor piece is provided with two drop-in elements or drop-in element pairs, and the base part is provided with two receptacles or receptacle pairs which are open toward a top of a periphery and which in each case at least in a vertical direction are mutually spaced apart.

2. The concrete pump as claimed in claim 1 , wherein the adaptor piece has two side panels which are spaced apart at a defined spacing and an intermediate space of which is bridged by said one drop-in element which is configured as a drop-in pin, and wherein the base part has aid one receptacle, which is open toward the top of a periphery, for the drop-in element.

3. The concrete pump as claimed in claim 2 , wherein the base part in the receptacles has a width which is smaller than or equal to an available width between side walls of the adaptor piece.

4. The concrete pump as claimed in claim 2 , wherein the adaptor piece in a lower edge of side panels, and/or the base part in an upper edge have/has run-up ramps which facilitate converging of the adaptor piece and the base part.

5. The concrete pump as claimed in claim 1 , wherein the adaptor piece has at least two pin-shaped drop-in elements which in pairs protrude in a mirror-symmetrical manner toward opposite sides on side panels, and wherein the base part on two side walls which are spaced apart from one another has, in each case, at least one receptacle, which is open toward a top of a periphery, for the drop-in elements.

6. The concrete pump as claimed in claim 5 , wherein side panels of the adaptor piece in the drop-in elements have a mutual spacing which is smaller than or equal to an available width between the side walls of the base part.

7. The concrete pump as claimed in claim 5 , wherein the base part in an upper edge of side walls, and/or the adaptor piece in a lower edge have/has run-up ramps which facilitate converging of the adaptor piece and the base part.

8. The concrete pump as claimed in claim 1 , wherein the in each case upper of the two receptacles or receptacle pairs is connected to a rear face of a lower receptacle or a lower receptacle pair by way of a stop face which adjoins a front periphery of said receptacles or receptacle pairs in an obliquely downward manner.

9. The concrete pump as claimed in claim 1 , wherein in each case an upper receptacle has a steeper front face than a lower receptacle.

10. The concrete pump as claimed in claim 9 , wherein a front face of a lower receptacle forms a circular segment of which a center is located in a base region of an upper receptacle.

11. The concrete pump as claimed in claim 1 , wherein the base part and the adaptor piece in an assembled state are additionally coupled by means of a safety member so as to be secured against the drop-in elements being lifted out of the receptacles.

12. The concrete pump as claimed in claim 2 , wherein side panels of the adaptor piece are kept apart from one another by at least one web which bridges an intermediate space.

13. The concrete pump as claimed in claim 1 , wherein the receptacles have in each case one external run-in face and one internal support face for the drop-in elements, and wherein support faces at their lowermost points have latching troughs for latching of the drop-in elements in the coupled state of the adaptor piece and the base part.

14. The concrete pump as claimed in claim 1 , wherein the part-pipes in the case of a released pipe coupling in the separation point are movable or bendable in relation to one another.

15. The concrete pump as claimed in claim 1 , wherein the pipe coupling between the part-pipes is externally accessible by way of a clearance going through the base part.

16. The concrete pump as claimed in claim 1 , wherein the outrigger is configured as a collapsible mast and/or a telescopic mast, having at least two boom arms which are interconnected at articulated joints and/or telescopic guides.

Assignees

• Putzmeister Engineering Gmbh

Inventors

• Braun Matthias

Classifications

• E04G21/0445

  with booms · CPC title

• F04B39/00 Primary

  Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 · CPC title

• E04G21/0436

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

• E04G21/0427

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

• E04G21/0418

  with distribution hose · CPC title