EP2888421B1 - Mobile concrete pump - Google Patents

Mobile concrete pump Download PDF

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Publication number
EP2888421B1
EP2888421B1 EP13725998.2A EP13725998A EP2888421B1 EP 2888421 B1 EP2888421 B1 EP 2888421B1 EP 13725998 A EP13725998 A EP 13725998A EP 2888421 B1 EP2888421 B1 EP 2888421B1
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EP
European Patent Office
Prior art keywords
carrying structure
liquid tank
concrete pump
support structure
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP13725998.2A
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German (de)
French (fr)
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EP2888421A1 (en
Inventor
Dietmar FÜGEL
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Putzmeister Engineering GmbH
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Putzmeister Engineering GmbH
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Publication of EP2888421A1 publication Critical patent/EP2888421A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes
    • B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing

Definitions

  • the invention relates to a mobile concrete pump with a directly or indirectly mounted via a body frame on a chassis of a truck chassis, preferably designed as a welded support structure for receiving a supporting device and a distributor boom forming functional units, the distributor boom rotatable on a built-in support structure mast bracket is mounted and the support device comprises two integrated in the support structure, diagonally forwardly open, at different height intersecting telescopic tubes, and wherein the support structure below the upper and above the lower telescopic tube each has a separate by an intermediate bottom of the adjacent telescope tube space.
  • the support structure is mounted on a body frame and placed together with this on the chassis of a truck chassis.
  • the body frame additionally comprises a drive assembly for controlling the functional units and the core pump.
  • the drive assembly comprises one or more hydraulic pumps and other auxiliary pumps, for example for driving an agitator in the material feed container of the core pump.
  • a correspondingly large tank for the hydraulic oil is required. Since the space is limited to a modern truck concrete pump, it makes sense to design any existing parts of the support structure as a tank. However, it should be noted that hydraulic tanks must be subjected to a reliable leak test.
  • the volume serving as a tank is pressurized and inspected for leaks. Only if no leaks are present, the tank may be used as intended become.
  • the support structure containing the girder is a very large and heavy welded construction, which can be handled, for example, to carry out a leak test only with great effort. Any leaks occurring in such a test are difficult to seal when the joints are inside the mast.
  • the present invention seeks to improve a mobile concrete pump with a support structure of the type specified in that there can be integrated for a leak test easily manageable liquid tank.
  • the solution according to the invention consists essentially in that in at least one of the free spaces of the support structure a prefabricated, in its outer contour to the support structure geometrically adapted, the supporting structure complementary and reinforcing liquid tank is inserted, which is prefabricated separately from the support structure and in this state is leakproof and which is geometrically adapted in its outer contour to the support structure, that the support structure has a free space delimiting, spaced from the intermediate bottom cover plate and that the liquid tank is welded to the adjacent telescopic tube and the cover plate.
  • the dimensions of the liquid tank compared to the entire support structure are much smaller than when handling the liquid tank a leak test relatively easy. Even a repair of leaks can be easily carried out because of the easy accessibility of the liquid tank within the support structure. Since parts of the liquid tank with their load-bearing walls are used for the support structure, the advantages of an integral tank with the exception of double floor or cover sheets are virtually retained.
  • the prefabricated liquid tank may comprise a one-piece side wall portion and a one-piece welded to this bottom, back and top part.
  • both the side wall portion and the bottom, back wall and top part can be formed as sheet metal bending parts that are easy to produce.
  • the side wall portion has at least one opening which is intended for the attachment of a nozzle, a sleeve and / or a window. In this way, the tank can be filled or emptied from the outside and it can communicate with the hydraulic functional units via connecting lines.
  • the truck chassis 10 carries a concrete pump 20 which is connected via a body frame 22 to the chassis 12.
  • the concrete pump assembly essentially comprises a core pump 24 with two hydraulic drive cylinders 26, two in pairs connected to the drive cylinders 26 via a water box 28 feed cylinders 30 and a rigidly arranged at the other end of the feed cylinder 30 material feed container 32.
  • the structure comprises a pressure feed line 34, which a trained as a crease mast distributor boom 36 is guided and at the end of the last mast arm has a subsidized concrete for concreting issuing end hose not shown.
  • the distribution boom 36 is rotatably mounted about a vertical axis of rotation 48 on a mast bracket 44 rigidly connected to a support structure 46 in the vicinity of the front end.
  • the mast block 44 has a boiler 52 inserted into a polygonal opening 50 of the support structure 46 oriented as a pivot bearing for the distribution mast 36, which has a polygonal contour adapted to the polygonal opening 50.
  • a support device 38 is provided with extendable support legs 40, 66.
  • the supporting device 38 comprises two telescopic tubes 54, 56 which are integrated diagonally forwardly in the supporting structure and intersect each other at different heights, the supporting structure 46 being located below the upper telescopic tube 54 and above the lower telescopic tube 56 each have a by an intermediate bottom 58 of the adjacent telescope tube separate free space 60, 62 has.
  • two laterally swinging rear support legs 66 are also hinged to the joints 64.
  • a sufficient supply of hydraulic oil is needed, for which a correspondingly large liquid tank 70 is required.
  • a special feature of the invention is that the liquid tank 70 is integrated in the support structure 46 in the fully assembled state of the concrete pump. Since the liquid tank 70 must be subjected to a reliable leak test prior to commissioning, a further special feature of the invention is that the liquid tank 70 together with a suitable connection construction is prefabricated and tightness-tested separately from the remaining support structure 46, before it is subsequently carried as a load-bearing component into the support structure 46 inserted and welded. How out Fig. 3a and b is to be seen, the liquid tank 70 is formed as in its outer contour to the support structure 46 geometrically adapted, the support structure 46 complementary and reinforcing component.
  • the prefabricated liquid tank 70 has an integral side wall part 72 and a one-piece welded to this bottom, rear wall and lid portion 74, which are each formed as sheet metal bending parts. Further located in the side wall portion 72 a plurality of openings 76 which are intended for attachment of a nozzle 78, a sleeve or a window.
  • the support structure 46 defines a respective free space 60, At a distance from the intermediate bottom 58 arranged cover plate 80 and that the liquid tank 70 with the adjacent telescopic tube 54, 56 and the cover plate 80 is welded.
  • the side walls 72 of the liquid tank 70 thus form supporting walls within the support structure 46.
  • the prefabricated relatively small liquid tank 70 compared to the entire support structure 46 is easy to handle and thus can easily be subjected to a leak test.
  • the repair of leaks is easy to perform due to the easy accessibility of the liquid tank 70. Since parts of the liquid tank 70 are used as reinforcing members of the support structure 46, the advantages of the integral tank except for the double bottom sheets are maintained.
  • the invention relates to a mobile concrete pump with a directly or indirectly via a mounting frame 22 on a chassis 12 of a truck chassis 10 can be placed support structure 46 for receiving a supporting device 38 and a distribution boom 36 forming functional units.
  • the distribution boom 36 is rotatably mounted on a mast bracket 44 integrated in the support structure 46, while the support device 38 comprises two integrated in the support structure 46, diagonally forwardly open, at different height intersecting telescopic tubes 54, 56.
  • Below the upper and above the lower telescopic tube 54, 56 is located in the support structure 46 each separated by an intermediate bottom 58 from the adjacent telescopic tube free space 60, 62.
  • a special feature of the invention is that in at least one of the free spaces 60, the support structure 46th additional and reinforcing liquid tank 70 is inserted, which is prefabricated separately from the support structure 46 and leak-proofed in this state and is geometrically adapted in its outer contour to the support structure 46, and that the support structure 46, a free space 60 delimiting, at a distance from the intermediate bottom 58th arranged cover plate 80 and that the liquid tank 70 with the adjacent telescopic tube 54,56 and the cover plate 80 is welded.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine fahrbare Betonpumpe mit einer unmittelbar oder mittelbar über einen Aufbaurahmen auf ein Fahrgestell eines LKW-Chassis aufsetzbaren, vorzugsweise als Schweißkonstruktion ausgebildeten Tragstruktur zur Aufnahme von eine Abstützvorrichtung und einen Verteilermast bildenden Funktionseinheiten, wobei der Verteilermast an einem in der Tragstruktur integrierten Mastbock drehbar gelagert ist und die Abstützvorrichtung zwei in der Tragstruktur integrierte, diagonal nach vorne offene, einander in verschiedener Höhe kreuzende Teleskoprohre umfasst, und wobei die Tragstruktur unterhalb des oberen und oberhalb des unteren Teleskoprohrs je einen durch einen Zwischenboden vom benachbarten Teleskoprohr getrennten Freiraum aufweist.The invention relates to a mobile concrete pump with a directly or indirectly mounted via a body frame on a chassis of a truck chassis, preferably designed as a welded support structure for receiving a supporting device and a distributor boom forming functional units, the distributor boom rotatable on a built-in support structure mast bracket is mounted and the support device comprises two integrated in the support structure, diagonally forwardly open, at different height intersecting telescopic tubes, and wherein the support structure below the upper and above the lower telescopic tube each has a separate by an intermediate bottom of the adjacent telescope tube space.

Bei fahrbaren Betonpumpen dieser Art ( DE 102 46 447 A1 ) wird die Tragstruktur auf einen Aufbaurahmen montiert und zusammen mit diesem auf das Fahrgestell eines LKW-Chassis aufgesetzt. Der Aufbaurahmen umfasst zusätzlich eine Antriebsbaugruppe zur Ansteuerung der Funktionseinheiten sowie der Kernpumpe. Je nach Pumpenmodell umfasst die Antriebsbaugruppe eine oder mehrere Hydraulikpumpen sowie weitere Hilfspumpen, beispielsweise für den Antrieb eines Rührwerks im Materialaufgabebehälter der Kernpumpe. Zur Versorgung der hydraulischen Aggregate der Antriebsbaugruppe und der Funktionseinheiten ist ein entsprechend großer Tank für das Hydrauliköl erforderlich. Da der Bauraum auf einer modernen Autobetonpumpe begrenzt ist, bietet es sich an, ohnehin vorhandene Teile der Tragstruktur als Tank auszugestalten. Allerdings ist dabei zu berücksichtigen, dass Hydrauliktanks einer zuverlässigen Dichtheitsprüfung unterzogen werden müssen. Bei der Dichtheitsprüfung wird das als Tank dienende Volumen unter Druck gesetzt und auf Undichtigkeiten untersucht. Erst wenn keine Undichtigkeiten vorhanden sind, darf der Tank bestimmungsgemäß verwendet werden. Andererseits ist zu berücksichtigen, dass die den Mastbock enthaltende Tragstruktur eine sehr große und schwere Schweißkonstruktion ist, die beispielsweise zur Durchführung einer Dichtheitsprüfung nur mit großem Aufwand handhabbar ist. Etwaige bei einer solchen Prüfung auftretende Undichtigkeiten lassen sich nur schwer abdichten, wenn sich die Fügestellen im Inneren des Mastbocks befinden.For mobile concrete pumps of this type ( DE 102 46 447 A1 ), the support structure is mounted on a body frame and placed together with this on the chassis of a truck chassis. The body frame additionally comprises a drive assembly for controlling the functional units and the core pump. Depending on the pump model, the drive assembly comprises one or more hydraulic pumps and other auxiliary pumps, for example for driving an agitator in the material feed container of the core pump. To supply the hydraulic units of the drive assembly and the functional units, a correspondingly large tank for the hydraulic oil is required. Since the space is limited to a modern truck concrete pump, it makes sense to design any existing parts of the support structure as a tank. However, it should be noted that hydraulic tanks must be subjected to a reliable leak test. During the leak test, the volume serving as a tank is pressurized and inspected for leaks. Only if no leaks are present, the tank may be used as intended become. On the other hand, it should be noted that the support structure containing the girder is a very large and heavy welded construction, which can be handled, for example, to carry out a leak test only with great effort. Any leaks occurring in such a test are difficult to seal when the joints are inside the mast.

Die Dokumente DE 102 46 447 A1 sowie EP 1 847 505 A2 offenbaren die Merkmale des einleitenden Teils des Anspruchs 1.The documents DE 102 46 447 A1 such as EP 1 847 505 A2 disclose the features of the introductory part of claim 1.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine fahrbare Betonpumpe mit einer Tragstruktur der eingangs angegebenen Art dahingehend zu verbessern, dass dort ein für eine Dichtheitsprüfung leicht handhabbarer Flüssigkeitstank integriert werden kann.Proceeding from this, the present invention seeks to improve a mobile concrete pump with a support structure of the type specified in that there can be integrated for a leak test easily manageable liquid tank.

Zur Lösung dieser Aufgabe wird die im Patenanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen.To solve this problem, the combination of features specified in claim 1 is proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

Die erfindungsgemäße Lösung besteht im Wesentlichen darin, dass in mindestens einen der Freiräume der Tragstruktur ein vorgefertigter, in seiner Außenkontur an die Tragstruktur geometrisch angepasster, die Tragstruktur ergänzender und verstärkender Flüssigkeitstank eingefügt ist, der getrennt von der Tragstruktur vorgefertigt und in diesem Zustand dichtheitsgeprüft ist und der in seiner Außenkontur an die Tragstruktur geometrisch angepasst ist, dass die Tragstruktur ein den Freiraum begrenzendes, im Abstand vom Zwischenboden angeordnetes Deckelblech aufweist und dass der Flüssigkeitstank mit dem benachbarten Teleskoprohr und dem Deckelblech verschweißt ist. Mit diesen Maßnahmen wird erreicht, dass eine sichere Fixierung des Flüssigkeitstanks in der Tragstruktur gewährleistet ist, und dass die Außenwände des Flüssigkeitstanks zugleich als tragende Wände innerhalb der Tragstruktur ausgebildet sind. Durch die dank Vorfertigung deutlich kleineren Abmessungen des Flüssigkeitstanks im Vergleich zur gesamten Tragstruktur ist die Handhabung des Flüssigkeitstanks bei der Durchführung einer Dichtheitsprüfung relativ einfach. Auch eine Reparatur von Undichtigkeiten lässt sich wegen der problemlosen Zugänglichkeit des Flüssigkeitstanks innerhalb der Tragstruktur leicht durchführen. Da Teile des Flüssigkeitstanks mit ihren tragenden Wänden für die Tragstruktur genutzt werden, bleiben die Vorteile eines Integraltanks mit Ausnahme von doppelten Boden- bzw. Deckelblechen nahezu erhalten.The solution according to the invention consists essentially in that in at least one of the free spaces of the support structure a prefabricated, in its outer contour to the support structure geometrically adapted, the supporting structure complementary and reinforcing liquid tank is inserted, which is prefabricated separately from the support structure and in this state is leakproof and which is geometrically adapted in its outer contour to the support structure, that the support structure has a free space delimiting, spaced from the intermediate bottom cover plate and that the liquid tank is welded to the adjacent telescopic tube and the cover plate. With these measures it is achieved that a secure fixation of the liquid tank is ensured in the support structure, and that the outer walls of the liquid tank are also formed as load-bearing walls within the support structure. Due to the prefabrication, the dimensions of the liquid tank compared to the entire support structure are much smaller than when handling the liquid tank a leak test relatively easy. Even a repair of leaks can be easily carried out because of the easy accessibility of the liquid tank within the support structure. Since parts of the liquid tank with their load-bearing walls are used for the support structure, the advantages of an integral tank with the exception of double floor or cover sheets are virtually retained.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung kann der vorgefertigte Flüssigkeitstank eine einstückige Seitenwandpartie und eine mit dieser verschweißte einstückige Boden-, Rückwand- und Deckelpartie umfassen. In diesem Fall können sowohl die Seitenwandpartie als auch die Boden-, Rückwand- und Deckelpartie als Blechbiegeteile ausgebildet werden, die einfach herstellbar sind. Vorteilhafterweise weist die Seitenwandpartie mindestens eine Öffnung auf, die zur Anbringung eines Stutzens, einer Muffe und/oder eines Fensters bestimmt ist. Auf diese Weise kann der Tank von außen befüllt oder entleert werden und er kann mit den hydraulischen Funktionseinheiten über Verbindungsleitungen kommunizieren.According to a further advantageous embodiment of the invention, the prefabricated liquid tank may comprise a one-piece side wall portion and a one-piece welded to this bottom, back and top part. In this case, both the side wall portion and the bottom, back wall and top part can be formed as sheet metal bending parts that are easy to produce. Advantageously, the side wall portion has at least one opening which is intended for the attachment of a nozzle, a sleeve and / or a window. In this way, the tank can be filled or emptied from the outside and it can communicate with the hydraulic functional units via connecting lines.

Im Folgenden wird die Erfindung anhand eines in der Zeichnung in schematischer Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
eine Seitenansicht einer fahrbaren Betonpumpe;
Fig. 2
eine Draufsicht auf die fahrbare Betonpumpe nach Fig. 1 bei abgenommenem Verteilermast;
Fig. 3a
eine Explosionsdarstellung der Tragstruktur der Betonpumpe nach Fig. 1 und 2 mit vorgefertigtem Flüssigkeitstank;
Fig. 3b
die Tragstruktur nach Fig. 3a mit eingeschweißtem Flüssigkeitstank;
Fig. 4a und b
die einstückigen Teile des Flüssigkeitstanks in verschiedenen schaubildlichen Explosionsdarstellungen;
Fig. 5a und b
den fertiggestellten vorgefertigten Flüssigkeitstank in zwei verschiedenen schaubildlichen Darstellungen.
In the following the invention will be explained in more detail with reference to an embodiment shown schematically in the drawing. Show it
Fig. 1
a side view of a mobile concrete pump;
Fig. 2
a plan view of the mobile concrete pump after Fig. 1 with removed distributor boom;
Fig. 3a
an exploded view of the support structure of the concrete pump Fig. 1 and 2 with prefabricated liquid tank;
Fig. 3b
the support structure after Fig. 3a with welded liquid tank;
Fig. 4a and b
the integral parts of the liquid tank in various perspective exploded views;
Fig. 5a and b
the finished prefabricated liquid tank in two different perspective views.

Die in Fig. 1 und 2 dargestellte fahrbare Betonpumpe weist ein LKW-Chassis 10, mit einem motorgetriebenen Fahrgestell 12 und einem Führerhaus 14 auf, dessen Motorantrieb über einen Antriebsstrang 16 mit den Hinterachsen 18 kuppelbar ist. Das LKW-Chassis 10 trägt eine Betonpumpe 20, die über eine Aufbaurahmen 22 mit dem Fahrgestell 12 verbunden ist. Der Betonpumpenaufbau umfasst im Wesentlichen eine Kernpumpe 24 mit zwei hydraulischen Antriebszylindern 26, zwei paarweise mit den Antriebszylindern 26 über einen Wasserkasten 28 verbundenen Förderzylindern 30 und einem am anderen Ende der Förderzylinder 30 starr angeordneten Materialaufgabebehälter 32. Weiter umfasst der Aufbau eine Druckförderleitung 34, die über einen als Knickmast ausgebildeten Verteilermast 36 geführt ist und am Ende des letzten Mastarms einen den geförderten Beton zur Betonierstelle ausgebenden nicht dargestellten Endschlauch aufweist.In the Fig. 1 and 2 illustrated mobile concrete pump has a truck chassis 10, with a motorized chassis 12 and a cab 14, the motor drive via a drive train 16 with the rear axles 18 can be coupled. The truck chassis 10 carries a concrete pump 20 which is connected via a body frame 22 to the chassis 12. The concrete pump assembly essentially comprises a core pump 24 with two hydraulic drive cylinders 26, two in pairs connected to the drive cylinders 26 via a water box 28 feed cylinders 30 and a rigidly arranged at the other end of the feed cylinder 30 material feed container 32. Further, the structure comprises a pressure feed line 34, which a trained as a crease mast distributor boom 36 is guided and at the end of the last mast arm has a subsidized concrete for concreting issuing end hose not shown.

Der Verteilermast 36 ist auf einen in der Nähe des stirnseitigen Endes mit einer Tragstruktur 46 starr verbundenen Mastbock 44 um eine vertikale Drehachse 48 drehbar gelagert. Der Mastbock 44 weist bei dem gezeigten Ausführungsbeispiel einen in eine parallel zur Drehachse 48 des Verteilermasts 36 ausgerichtete Mehrkantöffnung 50 der Tragstruktur 46 eingefügten, als Drehlager für den Verteilermast 36 ausgerüsteten Kessel 52 auf, der einen an die Mehrkantöffnung 50 angepassten Mehrkantumriss aufweist.The distribution boom 36 is rotatably mounted about a vertical axis of rotation 48 on a mast bracket 44 rigidly connected to a support structure 46 in the vicinity of the front end. In the exemplary embodiment shown, the mast block 44 has a boiler 52 inserted into a polygonal opening 50 of the support structure 46 oriented as a pivot bearing for the distribution mast 36, which has a polygonal contour adapted to the polygonal opening 50.

Weiter ist eine Abstützvorrichtung 38 mit ausstellbaren Stützbeinen 40, 66 vorgesehen. Die Abstützvorrichtung 38 umfasst dabei zwei in der Tragstruktur integrierte, diagonal nach vorne offene, einander in verschiedener Höhe kreuzende Teleskoprohre 54, 56, wobei die Tragstruktur 46 unterhalb des oberen Teleskoprohrs 54 und oberhalb des unteren Teleskoprohrs 56 je einen durch einen Zwischenboden 58 vom benachbarten Teleskoprohr getrennten Freiraum 60, 62 aufweist. Am rückwärtigen Ende der Tragstruktur 46 sind außerdem an den Gelenken 64 zwei seitlich ausschwenkbare hintere Stützbeine 66 angelenkt. Beim Betonierbetrieb werden die Stützbeine 40, 66 ausgestellt und unter Anheben des Fahrgestells 12 auf dem Erdboden abgestützt.Next, a support device 38 is provided with extendable support legs 40, 66. The supporting device 38 comprises two telescopic tubes 54, 56 which are integrated diagonally forwardly in the supporting structure and intersect each other at different heights, the supporting structure 46 being located below the upper telescopic tube 54 and above the lower telescopic tube 56 each have a by an intermediate bottom 58 of the adjacent telescope tube separate free space 60, 62 has. At the rear end of the support structure 46, two laterally swinging rear support legs 66 are also hinged to the joints 64. When concreting the support legs 40, 66 issued and supported lifting the chassis 12 on the ground.

Der hydraulische Antrieb der Kernpumpe 24, des Verteilermasts 36 und der Stützbeine 40, 66 erfolgt über eine Antriebsbaugruppe 42, die mehrere über den vom Fahrzeugmotor kommenden Antriebsstrang 16 antreibbare Hydraulikpumpen 68 umfasst. Zur Versorgung der hydraulischen Aggregate der Antriebsbaugruppe 42 wird ein ausreichender Vorrat an Hydrauliköl benötigt, wozu ein entsprechend großer Flüssigkeitstank 70 erforderlich ist.The hydraulic drive of the core pump 24, the distributor boom 36 and the support legs 40, 66 via a drive assembly 42 which includes a plurality of over the coming of the vehicle engine drive train 16 drivable hydraulic pumps 68. To supply the hydraulic units of the drive assembly 42, a sufficient supply of hydraulic oil is needed, for which a correspondingly large liquid tank 70 is required.

Eine Besonderheit der Erfindung besteht darin, dass der Flüssigkeitstank 70 im fertig montierten Zustand der Betonpumpe in der Tragstruktur 46 integriert ist. Da der Flüssigkeitstank 70 vor der Inbetriebnahme einer zuverlässigen Dichtheitsprüfung unterzogen werden muss, besteht eine weitere Besonderheit der Erfindung darin, dass der Flüssigkeitstank 70 samt geeigneter Anschlusskonstruktion getrennt von der restlichen Tragstruktur 46 vorgefertigt und dichtheitsgeprüft wird, bevor er anschließend als tragender Bestandteil in die Tragstruktur 46 eingefügt und eingeschweißt wird. Wie aus Fig. 3a und b zu ersehen ist, ist der Flüssigkeitstank 70 als in seiner Außenkontur an die Tragstruktur 46 geometrisch angepasstes, die Tragstruktur 46 ergänzendes und verstärkendes Bauteil ausgebildet. Zu diesem Zweck weist der vorgefertigte Flüssigkeitstank 70 eine einstückige Seitenwandpartie 72 und eine mit dieser verschweißte einstückige Boden-, Rückwand- und Deckelpartie 74 auf, die jeweils als Blechbiegeteile ausgebildet sind. Weiter befinden sich in der Seitenwandpartie 72 mehrere Öffnungen 76, die zur Anbringung eines Stutzens 78, einer Muffe oder eines Fensters bestimmt sind. Aus Fig. 3a ist zu ersehen, dass die Tragstruktur 46 ein den betreffenden Freiraum 60 begrenzendes, im Abstand vom Zwischenboden 58 angeordnetes Deckelblech 80 aufweist und dass der Flüssigkeitstank 70 mit dem benachbarten Teleskoprohr 54, 56 und dem Deckelblech 80 verschweißt ist. Die Seitenwände 72 des Flüssigkeitstanks 70 bilden damit tragende Wände innerhalb der Tragstruktur 46. Mit diesen Maßnahmen wird erreicht, dass der dank Vorfertigung relativ kleine Flüssigkeitstank 70 im Vergleich zur gesamten Tragstruktur 46 einfach handhabbar ist und somit leicht einer Dichtheitsprüfung unterzogen werden kann. Auch die Reparatur undichter Stellen lässt sich aufgrund der problemlosen Zugänglichkeit des Flüssigkeitstanks 70 leicht durchführen. Da Teile des Flüssigkeitstanks 70 als Verstärkungselemente der Tragstruktur 46 benutzt werden, bleiben die Vorteile des Integraltanks mit Ausnahme der doppelten Boden- bzw. Deckelbleche erhalten.A special feature of the invention is that the liquid tank 70 is integrated in the support structure 46 in the fully assembled state of the concrete pump. Since the liquid tank 70 must be subjected to a reliable leak test prior to commissioning, a further special feature of the invention is that the liquid tank 70 together with a suitable connection construction is prefabricated and tightness-tested separately from the remaining support structure 46, before it is subsequently carried as a load-bearing component into the support structure 46 inserted and welded. How out Fig. 3a and b is to be seen, the liquid tank 70 is formed as in its outer contour to the support structure 46 geometrically adapted, the support structure 46 complementary and reinforcing component. For this purpose, the prefabricated liquid tank 70 has an integral side wall part 72 and a one-piece welded to this bottom, rear wall and lid portion 74, which are each formed as sheet metal bending parts. Further located in the side wall portion 72 a plurality of openings 76 which are intended for attachment of a nozzle 78, a sleeve or a window. Out Fig. 3a It can be seen that the support structure 46 defines a respective free space 60, At a distance from the intermediate bottom 58 arranged cover plate 80 and that the liquid tank 70 with the adjacent telescopic tube 54, 56 and the cover plate 80 is welded. The side walls 72 of the liquid tank 70 thus form supporting walls within the support structure 46. With these measures it is achieved that the prefabricated relatively small liquid tank 70 compared to the entire support structure 46 is easy to handle and thus can easily be subjected to a leak test. The repair of leaks is easy to perform due to the easy accessibility of the liquid tank 70. Since parts of the liquid tank 70 are used as reinforcing members of the support structure 46, the advantages of the integral tank except for the double bottom sheets are maintained.

Zusammenfassend ist folgendes festzuhalten: Die Erfindung bezieht sich auf eine fahrbare Betonpumpe mit einer unmittelbar oder mittelbar über einen Aufbaurahmen 22 auf einem Fahrgestell 12 eines LKW-Chassis 10 aufsetzbaren Tragstruktur 46 zur Aufnahme von eine Abstützvorrichtung 38 und einen Verteilermast 36 bildenden Funktionseinheiten. Der Verteilermast 36 ist an einem in der Tragstruktur 46 integrierten Mastbock 44 drehbar gelagert, während die Abstützvorrichtung 38 zwei in der Tragstruktur 46 integrierte, diagonal nach vorne offene, einander in verschiedener Höhe kreuzende Teleskoprohre 54, 56 umfasst. Unterhalb des oberen und oberhalb des unteren Teleskoprohrs 54, 56 befindet sich in der Tragstruktur 46 je ein durch einen Zwischenboden 58 vom benachbarten Teleskoprohr getrennter Freiraum 60, 62. Eine Besonderheit der Erfindung besteht darin, dass in mindestens einen der Freiräume 60 ein die Tragstruktur 46 ergänzender und verstärkender Flüssigkeitstank 70 eingefügt ist, der getrennt von der Tragstruktur 46 vorgefertigt und in diesem Zustand dichtheitsgeprüft ist und der in seiner Außenkontur an die Tragstruktur 46 geometrisch angepasst ist, und dass die Tragstruktur 46 ein den Freiraum 60 begrenzendes, im Abstand vom Zwischenboden 58 angeordnetes Deckelblech 80 aufweist und dass der Flüssigkeitstank 70 mit dem benachbarten Teleskoprohr 54,56 und dem Deckelblech 80 verschweißt ist.In summary, the following should be noted: The invention relates to a mobile concrete pump with a directly or indirectly via a mounting frame 22 on a chassis 12 of a truck chassis 10 can be placed support structure 46 for receiving a supporting device 38 and a distribution boom 36 forming functional units. The distribution boom 36 is rotatably mounted on a mast bracket 44 integrated in the support structure 46, while the support device 38 comprises two integrated in the support structure 46, diagonally forwardly open, at different height intersecting telescopic tubes 54, 56. Below the upper and above the lower telescopic tube 54, 56 is located in the support structure 46 each separated by an intermediate bottom 58 from the adjacent telescopic tube free space 60, 62. A special feature of the invention is that in at least one of the free spaces 60, the support structure 46th additional and reinforcing liquid tank 70 is inserted, which is prefabricated separately from the support structure 46 and leak-proofed in this state and is geometrically adapted in its outer contour to the support structure 46, and that the support structure 46, a free space 60 delimiting, at a distance from the intermediate bottom 58th arranged cover plate 80 and that the liquid tank 70 with the adjacent telescopic tube 54,56 and the cover plate 80 is welded.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
LKW-ChassisTruck chassis
1212
Fahrgestellchassis
1414
Führerhauscabin
1616
Antriebsstrangpowertrain
1818
Hinterachserear axle
2020
Betonpumpeconcrete pump
2222
Aufbaurahmenmounting frame
2424
Kernpumpecore pump
2626
Antriebszylinderdrive cylinder
2828
Wasserkastencistern
3030
Förderzylinderdelivery cylinders
3232
MaterialaufgabebehälterMaterial feed container
3434
DruckförderleitungPressure feed line
3636
Verteilermastplacing boom
3838
AbstützvorrichtungSupport device
4040
Stützbeinesupport legs
4242
Antriebsbaugruppedrive assembly
4444
Mastbockboom base
4646
Tragstruktursupporting structure
4848
Drehachseaxis of rotation
5050
MehrkantöffnungPolygonal opening
5252
Kesselboiler
5454
oberes TeleskoprohrUpper telescopic tube
5656
unteres Teleskoprohrlower telescopic tube
5858
Zwischenbodenfalse floor
6060
Freiraumfree space
6262
Freiraumfree space
6464
Gelenkejoints
6666
hintere Stützbeinerear support legs
6868
Hydraulikpumpehydraulic pump
7070
Flüssigkeitstankliquid tank
7272
SeitenwandpartieSidewall section
7474
Boden-, Rückwand- und DeckelpartieBottom, back and lid section
7676
Öffnungenopenings
7878
StutzenSupport
8080
Deckelblechcover sheet

Claims (6)

  1. A mobile concrete pump with a carrying structure (46) which is capable of being placed directly or indirectly via a mounting frame (22) onto a running gear (12) of a truck chassis (10), for the accommodation of functional units forming a supporting device (38) and a distributor mast (36), wherein the distributor mast (36) is mounted rotatably on a mast trestle (44) integrated in the carrying structure (46), and the supporting device (38) comprises two telescopic tubes (54, 56) which are integrated in the carrying structure (46), are open diagonally forward and intersect each other at different heights, and wherein, below the upper and above the lower telescopic tube (54, 56), the carrying structure (46) has a respective clearance (60, 62) which is separated from the adjacent telescopic tube by an intermediate floor (58), characterized in that a liquid tank (70) which supplements and reinforces the carrying structure (46), is manufactured separately from the carrying structure (46) and is leak-tested in this state and which is adapted geometrically in the outer contour thereof to the carrying structure (46) is fitted into at least one of the clearances, that the carrying structure (46) has a ceiling plate (80) which bounds the clearance (60) and is arranged at a distance from the intermediate floor (58), and in that the liquid tank (70) is welded to the adjacent telescopic tube (54, 56) and to the ceiling plate (80).
  2. The concrete pump as claimed in claim 1, characterized in that the premanufactured liquid tank (70) comprises an integral side wall section (72) and an integral floor, rear wall and ceiling section (74) welded thereto.
  3. The concrete pump as claimed in claim 2, characterized in that the side walls forming the side wall section (72) of the liquid tank (70) are designed as load-bearing walls within the carrying structure (46).
  4. The concrete pump as claimed in claim 3, characterized in that the premanufactured liquid tank (70) is welded in the region of the clearance (60) into the carrying structure (46).
  5. The concrete pump as claimed in one of claims 2 to 4, characterized in that the side wall section (72) and the floor, rear wall and ceiling section (74) are in each case designed as bent sheet-metal parts.
  6. The concrete pump as claimed in claim 2 to 5, characterized in that the side wall section (72) has at least one opening (76) which is intended for the attaching of a connecting pipe (78), a coupling sleeve and/or a window.
EP13725998.2A 2012-08-24 2013-05-31 Mobile concrete pump Active EP2888421B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012215049.8A DE102012215049A1 (en) 2012-08-24 2012-08-24 Mobile concrete pump
PCT/EP2013/061279 WO2014029517A1 (en) 2012-08-24 2013-05-31 Mobile concrete pump

Publications (2)

Publication Number Publication Date
EP2888421A1 EP2888421A1 (en) 2015-07-01
EP2888421B1 true EP2888421B1 (en) 2016-12-28

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Application Number Title Priority Date Filing Date
EP13725998.2A Active EP2888421B1 (en) 2012-08-24 2013-05-31 Mobile concrete pump

Country Status (7)

Country Link
US (1) US9377032B2 (en)
EP (1) EP2888421B1 (en)
JP (1) JP6085681B2 (en)
KR (1) KR102104148B1 (en)
CN (1) CN104685139B (en)
DE (1) DE102012215049A1 (en)
WO (1) WO2014029517A1 (en)

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Also Published As

Publication number Publication date
CN104685139B (en) 2016-11-09
KR20150046018A (en) 2015-04-29
KR102104148B1 (en) 2020-04-24
DE102012215049A1 (en) 2014-03-20
CN104685139A (en) 2015-06-03
EP2888421A1 (en) 2015-07-01
WO2014029517A1 (en) 2014-02-27
US20150176608A1 (en) 2015-06-25
JP6085681B2 (en) 2017-02-22
US9377032B2 (en) 2016-06-28
JP2015530497A (en) 2015-10-15

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