EP3656947A1 - Automatic concrete pump - Google Patents

Automatic concrete pump Download PDF

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Publication number
EP3656947A1
EP3656947A1 EP19207419.3A EP19207419A EP3656947A1 EP 3656947 A1 EP3656947 A1 EP 3656947A1 EP 19207419 A EP19207419 A EP 19207419A EP 3656947 A1 EP3656947 A1 EP 3656947A1
Authority
EP
European Patent Office
Prior art keywords
strut
concrete pump
truck
mounted concrete
struts
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.)
Granted
Application number
EP19207419.3A
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German (de)
French (fr)
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EP3656947B1 (en
Inventor
Stefan Peters
Karl Westermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Mischtecknik GmbH
Original Assignee
Liebherr Betonpumpen GmbH
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Application filed by Liebherr Betonpumpen GmbH filed Critical Liebherr Betonpumpen GmbH
Publication of EP3656947A1 publication Critical patent/EP3656947A1/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
    • 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
    • E04G21/0445—Devices for both conveying and distributing with distribution hose with booms

Definitions

  • the invention relates to a truck-mounted concrete pump with an auxiliary frame projecting towards the rear of the truck-mounted concrete pump and a mast bracket, the auxiliary frame and the mast bracket being coupled to one another by means of at least one strut.
  • Generic truck-mounted concrete pumps have a subframe which projects far towards the rear of the machine and which, in conjunction with the truck frame, serves as a support for various units such as the pump, water tanks and / or other components.
  • various units such as the pump, water tanks and / or other components.
  • the mast bracket and the subframe are connected in whole or in part by means of one or more struts to form a rigid triangle.
  • This version is comparatively simple and light, since it greatly reduces the free bending length of the subframe.
  • the struts usually do not have any other function.
  • Installed struts can be bolted on both sides.
  • the articulated connection of the struts relieves the struts from bending moments, thereby reducing them slimmer and therefore lighter than the usual welded struts.
  • a truck-mounted concrete pump is provided with an auxiliary frame projecting towards the rear of the truck-mounted concrete pump and a mast bracket, the auxiliary frame and the mast bracket being coupled to one another by means of at least one strut.
  • the strut has an angular cross section. Due to the angular design of the strut, it is possible to easily mount objects on the strut so that they cannot twist.
  • At least two struts in particular bolted on both sides, are provided.
  • the two or more struts can be arranged, for example, on the left and right of the truck-mounted concrete pump.
  • the struts can be coupled with bolts to corresponding bearing sections of the mast bracket and the subframe.
  • the strut comprises a non-rotatable fork head on at least one end.
  • the fork head can be at least partially fixed in a central part of the strut.
  • the strut runs diagonally from the bottom back to the top of the truck-mounted concrete pump.
  • the strut comprises at least one bushing for receiving screws.
  • the bushing can, for example, be oriented perpendicular to the longitudinal alignment of the strut.
  • the fork head is made narrower than a central part of the strut.
  • the middle part of the strut can describe that section which is located between two fork heads arranged opposite one another.
  • the middle part can in particular be designed continuously as a hollow profile element.
  • the fork head can be made narrower overall or in sections than the central part.
  • At least one fastening clamp is provided on the strut.
  • the mounting bracket it is possible to couple other components to the strut. Due to the angular cross-section of the strut, the fastening clamp and thus the object coupled via it to the strut cannot easily rotate unintentionally around the strut.
  • the strut is designed with a square cross section.
  • the strut can comprise any angular cross sections, such as a generally rectangular cross section or a complex profile cross section with one or more hollow sections and, if appropriate, with planar or non-hollow sections connected therewith.
  • Figure 1 shows a schematic view of the truck-mounted concrete pump 1 according to the invention with an auxiliary frame 2 projecting towards the rear of the truck-mounted concrete pump and a mast bracket 3.
  • the auxiliary frame 2 and the mast bracket 3 are coupled to one another by means of at least one strut 4.
  • the strut 4 can have an angular and in particular rectangular cross section.
  • the auxiliary frame 2 can be mounted on a vehicle frame 11 or coupled to such a vehicle frame 11.
  • the vehicle frame 11 and the auxiliary frame 2 can extend approximately equally far in the longitudinal direction of the truck-mounted concrete pump 1.
  • a funnel 12 can be provided, which is used to introduce concrete into the truck-mounted concrete pump 1.
  • the strut 4 shown can be coupled to the subframe 2 and the mast bracket 3 on both sides by means of bolts or a bolt 9.
  • One of the bolts 9 can be arranged in the area of a mast support 10, which is set up to place a mast (not shown) of the truck-mounted concrete pump 1.
  • This bolt 9 can in particular be located in an area of the mast support 10 which is directly adjacent to the subframe 2 or which is the area of the mast support 10 which is closest to the subframe 2.
  • the strut 4 can comprise at least one of its ends a non-rotatable fork head, via which the strut 4 can be bolted.
  • Figure 2 shows a detailed view of the strut 4, as it is bolted via a bolt on the mast bracket 3 and / or on the subframe 2.
  • the clevis can be made narrower than that in the Figure 2
  • the middle part of the strut 4 can be the part of the strut 4 arranged between the two fork heads.
  • the bolt 9 is indicated by a dashed line which essentially corresponds to the longitudinal axis of a bolt of the bolt 9, not shown.
  • Figure 3a shows a strut 4 designed according to the prior art, which has a round cross section and thus has a low level of security against rotation of fastening clamps 5 attached to it.
  • the mounting clamps 5 of the Figures 3b - 3e can have a geometry corresponding to the strut 4 at least in sections on their inner sides.
  • the fastening clamps 5 can rest at least in sections on the strut.
  • the fastening clamps 5 can further comprise one or more flange sections on their outer sides, by means of which the fastening clamps 5 can be fixed to the strut, for example using screws.
  • Figure 3c shows the strut 4 of a truck-mounted concrete pump 1 according to the invention, to which an attachment 6 is coupled via a fastening clamp 5.
  • the attachment 6 can be coupled with one of its flat outer walls to a flat outer wall of the strut 4 and can thereby be secured against rotation.
  • screws 8 are coupled via a clamping part 7 to an attachment part 6, the strut 4 being encompassed by the screws 8 and the clamping part 7.
  • the embodiment of the Figure 3e shows an embodiment in which the strut has 4 bushings for receiving screws 8.
  • An attachment 6 can in particular be placed on a flat wall of the strut 4 via one of its flat outer walls and screwed to the strut 4 by means of the screws 8 mentioned.
  • bushings for receiving the screws 8 can be provided in the strut 4.
  • the strut 4 has any angular geometry. However, it is preferably rectangular and in particular square in cross section.
  • the strut 4 can have said non-rotatable fork head on at least one of its ends, so that the orientation of the strut cannot change unintentionally. Due to the rectangular cross-section of the strut, it is easily possible to attach brackets for additional parts or attachments to one of them, even with a screw clamp to fix individual strut 4 without the risk of twisting the terminals 5. In addition to their supporting role, struts 4 designed in this way can thus be used as equipment carriers, which saves costs and weight by eliminating other attachment options. Examples of parts to be attached to the strut 4 are, for example, lubrication containers, mast racks, protective covers, oil coolers, hydraulic pipe holders or the like.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

Die Erfindung betrifft eine Autobetonpumpe mit einem zum Heck der Autobetonpumpe hin auskragenden Hilfsrahmen und einem Mastbock, wobei der Hilfsrahmen und der Mastbock mittels wenigstens einer Strebe miteinander gekoppelt sind.The invention relates to a truck-mounted concrete pump with an auxiliary frame projecting towards the rear of the truck-mounted concrete pump and a mast bracket, the auxiliary frame and the mast bracket being coupled to one another by means of at least one strut.

Description

Die Erfindung betrifft eine Autobetonpumpe mit einem zum Heck der Autobetonpumpe hin auskragenden Hilfsrahmen und einem Mastbock, wobei der Hilfsrahmen und der Mastbock mittels wenigstens einer Strebe miteinander gekoppelt sind.The invention relates to a truck-mounted concrete pump with an auxiliary frame projecting towards the rear of the truck-mounted concrete pump and a mast bracket, the auxiliary frame and the mast bracket being coupled to one another by means of at least one strut.

Gattungsgemäße Autobetonpumpen weisen einen zum Maschinenheck hin weit auskragenden Hilfsrahmen auf, der in Verbindung mit dem Lastwagenrahmen als Träger verschiedene Aggregate wie der Pumpe, Wassertanks und/oder anderer Bauteile dient. Um die Lasten dieser Aggregate in die eigentliche Tragstruktur beziehungsweise den Mastbock und den Hilfsrahmen einzuleiten, wählt man üblicherweise fachwerkartige Konstruktionen. Dabei werden der Mastbock und der Hilfsrahmen ganz oder teilweise mittels einer oder mehrerer Streben zu einem biegesteifen Dreieck verbunden. Diese Ausführung ist vergleichsweise einfach und leicht, da sie die freie Biegelänge des Hilfsrahmens stark reduziert. Üblicherweise übernehmen die Streben darüber hinaus keine weitere Funktion.Generic truck-mounted concrete pumps have a subframe which projects far towards the rear of the machine and which, in conjunction with the truck frame, serves as a support for various units such as the pump, water tanks and / or other components. In order to transfer the loads of these units into the actual supporting structure or the mast frame and the subframe, one usually chooses truss-like constructions. The mast bracket and the subframe are connected in whole or in part by means of one or more struts to form a rigid triangle. This version is comparatively simple and light, since it greatly reduces the free bending length of the subframe. The struts usually do not have any other function.

Verbauten Streben können bekannterweise beidseitig verbolzt sein. Die gelenkige Anbindung der Streben entlastet die Streben von Biegemomenten, wodurch diese schlanker und dadurch leichter ausgeführt werden können als die sonst üblichen angeschweißten Streben. Dabei ist es bekannt, als Streben ein Rohr bzw. Rundrohr zu verwenden. Rohre weisen aufgrund ihrer Rundheit den Nachteil auf, dass fertigungstechnisch vorteilhafte Schraubklemmen zur Nutzung der Streben als Träger für weitere Bauteile wegen der mit den Rundrohren einhergehenden fehlenden Verdrehsicherung schwierig ausführbar sind. Wenn ein Rundrohr Verwendung findet, so besteht die einzige Möglichkeit zum Anbringen von weiteren Teilen daher in einer Verbindung beider Streben.Installed struts can be bolted on both sides. The articulated connection of the struts relieves the struts from bending moments, thereby reducing them slimmer and therefore lighter than the usual welded struts. It is known to use a tube or round tube as struts. Due to their roundness, tubes have the disadvantage that screw terminals, which are advantageous in terms of production technology, for using the struts as supports for further components are difficult to carry out because of the lack of anti-twist protection associated with the round tubes. If a round tube is used, the only way to attach additional parts is to connect the two struts.

Vor diesem Hintergrund ist es Aufgabe der Erfindung eine verbesserte Autobetonpumpe bereitzustellen, bei der die Streben zum Verbinden des Mastbocks mit dem Hilfsrahmen einfacher als Halter für weitere Komponenten genutzt werden können.Against this background, it is an object of the invention to provide an improved truck-mounted concrete pump in which the struts for connecting the mast bracket to the subframe can be used more easily as a holder for further components.

Diese Aufgabe wird erfindungsgemäß von einer Autobetonpumpe mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausbildungen sind Gegenstand der Unteransprüche.This object is achieved by a truck-mounted concrete pump with the features of claim 1. Advantageous training is the subject of the dependent claims.

Demnach ist eine Autobetonpumpe mit einem zum Heck der Autobetonpumpe hin auskragenden Hilfsrahmen und einem Mastbock vorgesehen, wobei der Hilfsrahmen und der Mastbock mittels wenigstens einer Strebe miteinander gekoppelt sind. Die Strebe weist erfindungsgemäß einen eckigen Querschnitt auf. Durch die eckig ausgebildete Außenseite der Strebe ist es möglich an der Strebe Objekte einfacher verdrehsicher zu montieren.Accordingly, a truck-mounted concrete pump is provided with an auxiliary frame projecting towards the rear of the truck-mounted concrete pump and a mast bracket, the auxiliary frame and the mast bracket being coupled to one another by means of at least one strut. According to the invention, the strut has an angular cross section. Due to the angular design of the strut, it is possible to easily mount objects on the strut so that they cannot twist.

In einer bevorzugten Ausführung der Erfindung ist denkbar, dass wenigstens zwei insbesondere beidseitig gebolzte Streben vorgesehen sind. Die zwei oder mehr Streben können beispielsweise links und rechts an der Autobetonpumpe angeordnet sein. Die Streben können über Bolzen mit entsprechenden Lagerabschnitten des Mastbocks und des Hilfsrahmens gekoppelt sein.In a preferred embodiment of the invention it is conceivable that at least two struts, in particular bolted on both sides, are provided. The two or more struts can be arranged, for example, on the left and right of the truck-mounted concrete pump. The struts can be coupled with bolts to corresponding bearing sections of the mast bracket and the subframe.

In einer weiteren bevorzugten Ausführung der Erfindung ist denkbar, dass die Strebe an wenigstens einem Ende einen verdrehsicheren Gabelkopf umfasst. Der Gabelkopf kann wenigstens teilweise in einem Mittelteil der Strebe fixiert sein.In a further preferred embodiment of the invention, it is conceivable that the strut comprises a non-rotatable fork head on at least one end. The fork head can be at least partially fixed in a central part of the strut.

In einer weiteren bevorzugten Ausführung der Erfindung ist denkbar, dass die Strebe diagonal von hinten unten nach vorne oben an der Autobetonpumpe verläuft.In a further preferred embodiment of the invention, it is conceivable that the strut runs diagonally from the bottom back to the top of the truck-mounted concrete pump.

In einer weiteren bevorzugten Ausführung der Erfindung ist denkbar, dass die Strebe wenigstens eine Durchführung zum Aufnehmen von Schrauben umfasst. Die Durchführung kann beispielsweise senkrecht zur Längsausrichtung der Strebe orientiert sein.In a further preferred embodiment of the invention, it is conceivable that the strut comprises at least one bushing for receiving screws. The bushing can, for example, be oriented perpendicular to the longitudinal alignment of the strut.

In einer weiteren bevorzugten Ausführung ist denkbar, dass der Gabelkopf schmaler ausgeführt ist als ein Mittelteil der Strebe. Der Mittelteil der Strebe kann denjenigen Abschnitt beschreiben, der sich zwischen zwei einander gegenüberliegend angeordneten Gabelköpfen befindet. Der Mittelteil kann insbesondere durchgängig als Hohlprofilelement ausgebildet sein. Der Gabelkopf kann insgesamt oder Abschnittsweise schmaler als der Mitteilteil ausgebildet sein.In a further preferred embodiment it is conceivable that the fork head is made narrower than a central part of the strut. The middle part of the strut can describe that section which is located between two fork heads arranged opposite one another. The middle part can in particular be designed continuously as a hollow profile element. The fork head can be made narrower overall or in sections than the central part.

In einer weiteren bevorzugten Ausführung ist denkbar, dass an der Strebe wenigstens eine Befestigungsschelle vorgesehen ist. Mittels der Befestigungsschelle ist es möglich weitere Komponenten mit der Strebe zu koppeln. Aufgrund des eckigen Querschnitts der Strebe können die Befestigungsschelle und damit das über sie mit der Strebe gekoppelte Objekt nicht ohne weiteres ungewollt um die Strebe rotieren.In a further preferred embodiment it is conceivable that at least one fastening clamp is provided on the strut. Using the mounting bracket, it is possible to couple other components to the strut. Due to the angular cross-section of the strut, the fastening clamp and thus the object coupled via it to the strut cannot easily rotate unintentionally around the strut.

In einer weiteren bevorzugten Ausführung ist denkbar, dass die Strebe mit quadratischem Querschnitt ausgeführt ist. Darüber hinaus kann die Strebe beliebige eckige Querschnitte wie beispielsweise einen allgemein rechteckigen Querschnitt oder einen komplexen Profilquerschnitt mit einem oder mehreren Hohlabschnitten und gegebenenfalls mit damit zusammenhängenden planar bzw. nicht hohl ausgebildeten Abschnitten umfassen.In a further preferred embodiment it is conceivable that the strut is designed with a square cross section. In addition, the strut can comprise any angular cross sections, such as a generally rectangular cross section or a complex profile cross section with one or more hollow sections and, if appropriate, with planar or non-hollow sections connected therewith.

Weitere Einzelheiten und Vorteile der Erfindung sind anhand der in den Figuren beispielhaft gezeigten Ausführungen erläutert. Dabei zeigen:

Figur 1:
eine schematische Darstellung einer erfindungsgemäßen Autobetonpumpe;
Figur 2:
eine schematische Längsansicht einer Strebe; und
Figuren 3a-e:
Querschnittsansichten einer Strebe.
Further details and advantages of the invention are explained on the basis of the exemplary embodiments shown in the figures. Show:
Figure 1:
a schematic representation of a truck-mounted concrete pump according to the invention;
Figure 2:
a schematic longitudinal view of a strut; and
Figures 3a-e:
Cross-sectional views of a strut.

Figur 1 zeigt eine schematische Ansicht der erfindungsgemäßen Autobetonpumpe 1 mit einem zum Heck der Autobetonpumpe hin auskragendem Hilfsrahmen 2 und einem Mastbock 3. Der Hilfsrahmen 2 und der Mastbock 3 sind mittels wenigstens einer Strebe 4 miteinander gekoppelt. Die Strebe 4 kann einen eckigen und insbesondere rechteckigen Querschnitt aufweisen. Figure 1 shows a schematic view of the truck-mounted concrete pump 1 according to the invention with an auxiliary frame 2 projecting towards the rear of the truck-mounted concrete pump and a mast bracket 3. The auxiliary frame 2 and the mast bracket 3 are coupled to one another by means of at least one strut 4. The strut 4 can have an angular and in particular rectangular cross section.

Der Hilfsrahmen 2 kann auf einem Fahrzeugrahmen 11 montiert bzw. mit einem solchen Fahrzeugrahmen 11 gekoppelt sein. Der Fahrzeugrahmen 11 und der Hilfsrahmen 2 können sich in etwa gleich weit in Längsrichtung der Autobetonpumpe 1 erstrecken.The auxiliary frame 2 can be mounted on a vehicle frame 11 or coupled to such a vehicle frame 11. The vehicle frame 11 and the auxiliary frame 2 can extend approximately equally far in the longitudinal direction of the truck-mounted concrete pump 1.

Im hinteren Bereich des Hilfsrahmens 2 kann ein Trichter 12 vorgesehen sein, der zum Einleiten von Beton in die Autobetonpumpe 1 dient.In the rear area of the subframe 2, a funnel 12 can be provided, which is used to introduce concrete into the truck-mounted concrete pump 1.

Die in Figur 1 gezeigte Strebe 4 kann beidseitig über Bolzen beziehungsweise über eine Verbolzung 9 mit dem Hilfsrahmen 2 und dem Mastbock 3 gekoppelt sein. Eine der Verbolzungen 9 kann im Bereich einer Mastauflage 10 angeordnet sein, die zum Auflegen eines nicht gezeigten Mastes der Autobetonpumpe 1 eingerichtet ist. Diese Verbolzung 9 kann insbesondere in einem Bereich der Mastauflage 10 verortet sein, der dem Hilfsrahmen 2 direkt benachbart ist bzw. der derjenige Bereich der Mastauflage 10 ist, der dem Hilfsrahmen 2 am nächsten ist.In the Figure 1 The strut 4 shown can be coupled to the subframe 2 and the mast bracket 3 on both sides by means of bolts or a bolt 9. One of the bolts 9 can be arranged in the area of a mast support 10, which is set up to place a mast (not shown) of the truck-mounted concrete pump 1. This bolt 9 can in particular be located in an area of the mast support 10 which is directly adjacent to the subframe 2 or which is the area of the mast support 10 which is closest to the subframe 2.

Die Strebe 4 kann an wenigstens einem ihrer Enden einen verdrehsicheren Gabelkopf umfassen, über den die Strebe 4 verbolzbar ist.The strut 4 can comprise at least one of its ends a non-rotatable fork head, via which the strut 4 can be bolted.

Die in Figur 1 gezeigte Strebe 4 ist an der Autobetonpumpe 1 von hinten unten nach vorne oben geführt. Denkbar ist auch, dass die Strebe 4 dabei von außen nach innen oder von innen nach außen an der Autobetonpumpe 1 verläuft.In the Figure 1 The strut 4 shown is guided on the truck-mounted concrete pump 1 from the bottom down to the front up. It is also conceivable that the strut 4 runs from outside to inside or from inside to outside of the truck-mounted concrete pump 1.

Figur 2 zeigt eine Detailansicht der Strebe 4, wie sie über eine Verbolzung am Mastbock 3 und/oder am Hilfsrahmen 2 verbolzt ist. Der Gabelkopf kann schmaler ausgeführt sein, als der in der Figur 2 rechts gezeigte Mittelteil der Strebe 4. Der Mittelteil der Strebe 4 kann das zwischen den beiden Gabelköpfen angeordnete Teil der Strebe 4 sein. Figure 2 shows a detailed view of the strut 4, as it is bolted via a bolt on the mast bracket 3 and / or on the subframe 2. The clevis can be made narrower than that in the Figure 2 Middle part of the strut 4 shown on the right. The middle part of the strut 4 can be the part of the strut 4 arranged between the two fork heads.

Die Verbolzung 9 ist durch eine gestrichelte Linie angezeigt, die im Wesentlichen der Längsachse eines nicht gezeigten Bolzens der Verbolzung 9 entspricht.The bolt 9 is indicated by a dashed line which essentially corresponds to the longitudinal axis of a bolt of the bolt 9, not shown.

Die durchgestrichenen Pfeile in Figur 2 sowie in en Figuren 3b -3e zeigen an, dass durch die eckige Querschnittsgeometrie der Strebe 4 eine Verdrehsicherung von an der Strebe 4 befestigten Komponenten gegeben ist. Figur 3a zeigt dagegen eine Strebe 4 mit einem aus dem Stand der Technik bekannten runden Querschnitt, bei der eine solche Verdrehsicherung nicht gegeben ist.The crossed out arrows in Figure 2 as well as in en Figures 3b -3e indicate that the angular cross-sectional geometry of the strut 4 provides security against rotation of components attached to the strut 4. Figure 3a on the other hand shows a strut 4 with a round cross section known from the prior art, in which such an anti-rotation device is not provided.

Figur 3a zeigt eine gemäß dem Stand der Technik ausgeführte Strebe 4, die einen runden Querschnitt aufweist und damit eine geringe Sicherung gegen Verdrehen von daran befestigten Befestigungsschellen 5 aufweist. Figure 3a shows a strut 4 designed according to the prior art, which has a round cross section and thus has a low level of security against rotation of fastening clamps 5 attached to it.

Im Gegensatz dazu zeigt die in Figur 3b gezeigte Ausführung den Querschnitt einer Strebe 4, der eckig ausgeführt ist, und an dem entsprechend eckig beziehungsweise gekantet ausgeführte Befestigungsschellen 5 gegen ein Verdrehen relativ zur Strebe 4 gesichert sind.In contrast, the in Figure 3b shown embodiment, the cross section of a strut 4, which is angular, and on which correspondingly angular or edged fastening clamps 5 are secured against rotation relative to the strut 4.

Die Befestigungsschellen 5 der Figuren 3b - 3e können an ihren Innenseiten wenigstens abschnittsweise eine der Strebe 4 entsprechende Geometrie aufweisen. Insbesondere können die Befestigungsschellen 5 wenigstens abschnittsweise an der Strebe anliegen.The mounting clamps 5 of the Figures 3b - 3e can have a geometry corresponding to the strut 4 at least in sections on their inner sides. In particular, the fastening clamps 5 can rest at least in sections on the strut.

Die Befestigungsschellen 5 können ferner an ihren Außenseiten einen oder mehrere Flanschabschnitte umfassen, mittels der die Befestigungsschellen 5 beispielsweise unter Verwendung von Schrauben an der Strebe fixierbar sind.The fastening clamps 5 can further comprise one or more flange sections on their outer sides, by means of which the fastening clamps 5 can be fixed to the strut, for example using screws.

Figur 3c zeigt die Strebe 4 einer erfindungsgemäßen Autobetonpumpe 1, an der ein Anbauteil 6 über eine Befestigungsschelle 5 gekoppelt ist. Das Anbauteil 6 kann mit einer seiner flachen Außenwände an eine flache Außenwand der Strebe 4 gekoppelt sein und hierdurch eine Verdrehsicherung erfahren. Figure 3c shows the strut 4 of a truck-mounted concrete pump 1 according to the invention, to which an attachment 6 is coupled via a fastening clamp 5. The attachment 6 can be coupled with one of its flat outer walls to a flat outer wall of the strut 4 and can thereby be secured against rotation.

In dem Ausführungsbeispiel der Figur 3d sind Schrauben 8 über ein Klemmteil 7 mit einem Anbauteil 6 gekoppelt, wobei die Strebe 4 von den Schrauben 8 und dem Klemmteil 7 umgriffen ist.In the embodiment of the Figure 3d screws 8 are coupled via a clamping part 7 to an attachment part 6, the strut 4 being encompassed by the screws 8 and the clamping part 7.

Das Ausführungsbeispiel der Figur 3e zeigt eine Ausführung bei der die Strebe 4 Durchführungen zum Aufnehmen von Schrauben 8 aufweist. Ein Anbauteil 6 kann insbesondere über eine von dessen flachen Außenwänden an eine flache Wandung der Strebe 4 angelegt werden und über die genannten Schrauben 8 mit der Strebe 4 verschraubt werden. Hierzu können in der Strebe 4 Durchführungen zum Aufnehmen der Schrauben 8 vorgesehen sein.The embodiment of the Figure 3e shows an embodiment in which the strut has 4 bushings for receiving screws 8. An attachment 6 can in particular be placed on a flat wall of the strut 4 via one of its flat outer walls and screwed to the strut 4 by means of the screws 8 mentioned. For this purpose, bushings for receiving the screws 8 can be provided in the strut 4.

Die Strebe 4 weist eine beliebige eckige Geometrie auf. Bevorzugt ist sie jedoch rechteckig und insbesondere quadratischen Querschnitts.The strut 4 has any angular geometry. However, it is preferably rectangular and in particular square in cross section.

Die Strebe 4 kann an wenigstens einem ihrer Enden den genannten verdrehsicheren Gabelkopf aufweisen, damit sich die Ausrichtung der Strebe nicht ungewollt ändern kann. Durch den Rechteckquerschnitt der Strebe ist es einfach möglich, Halter für weitere Teile oder Anbauteile selbst per Schraubklemmung auch an einer einzelnen Strebe 4 zu befestigen, ohne dass die Gefahr einer Verdrehung der Klemmen 5 besteht. Neben ihrer tragenden Rolle können so ausgeführte Streben 4 damit als Geräteträger verwendet werden, was Kosten und Gewicht durch Entfall sonstiger Anbringmöglichkeiten spart. Beispiele für an der Strebe 4 anzubringende Teile sind etwa Schmierbehälter, Mastablagen, Schutzabdeckungen, Ölkühler, Hydraulikrohrhalter oder ähnliches.The strut 4 can have said non-rotatable fork head on at least one of its ends, so that the orientation of the strut cannot change unintentionally. Due to the rectangular cross-section of the strut, it is easily possible to attach brackets for additional parts or attachments to one of them, even with a screw clamp to fix individual strut 4 without the risk of twisting the terminals 5. In addition to their supporting role, struts 4 designed in this way can thus be used as equipment carriers, which saves costs and weight by eliminating other attachment options. Examples of parts to be attached to the strut 4 are, for example, lubrication containers, mast racks, protective covers, oil coolers, hydraulic pipe holders or the like.

Claims (8)

Autobetonpumpe (1) mit einem zum Heck der Autobetonpumpe (1) hin auskragenden Hilfsrahmen (2) und einem Mastbock (3), wobei der Hilfsrahmen (2) und der Mastbock (3) mittels wenigstens einer Strebe (4) miteinander gekoppelt sind, dadurch gekennzeichnet, dass die Strebe (4) einen eckigen Querschnitt aufweist.Mobile concrete pump (1) with a stern of the mobile concrete pump (1) back projecting auxiliary frame (2) and a pole block (3), wherein the auxiliary frame (2) and the mast base (3) by at least one strut (4) are coupled together, characterized characterized in that the strut (4) has an angular cross section. Autobetonpumpe (1) nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens zwei insbesondere beidseitig gebolzte Streben (4) vorgesehen sind.Truck-mounted concrete pump (1) according to claim 1, characterized in that at least two struts (4), in particular bolted on both sides, are provided. Autobetonpumpe (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Strebe (4) an wenigstens einem Ende einen verdrehsicheren Gabelkopf umfasst.Truck-mounted concrete pump (1) according to claim 1 or 2, characterized in that the strut (4) comprises a non-rotatable fork head on at least one end. Autobetonpumpe (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strebe (4) diagonal von hinten unten nach vorne oben an der Autobetonpumpe (1) verläuft.Truck-mounted concrete pump (1) according to one of the preceding claims, characterized in that the strut (4) runs diagonally from the bottom back to the top of the truck-mounted concrete pump (1). Autobetonpumpe (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strebe (4) wenigstens eine Durchführung zum Aufnehmen von Schrauben umfasst.Truck-mounted concrete pump (1) according to one of the preceding claims, characterized in that the strut (4) comprises at least one bushing for receiving screws. Autobetonpumpe (1) nach wenigstens nach Anspruch 3, dadurch gekennzeichnet, dass der Gabelkopf schmaler ausgeführt ist als ein Mittelteil der Strebe (4).Truck-mounted concrete pump (1) according to at least claim 3, characterized in that the fork head is made narrower than a central part of the strut (4). Autobetonpumpe (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an der Strebe (4) wenigstens eine Befestigungsschelle (5) vorgesehen ist.Truck-mounted concrete pump (1) according to one of the preceding claims, characterized in that at least one fastening clamp (5) is provided on the strut (4). Autobetonpumpe (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Strebe (4) mit quadratischem Querschnitt ausgeführt ist.Truck-mounted concrete pump (1) according to one of the preceding claims, characterized in that the strut (4) is designed with a square cross-section.
EP19207419.3A 2018-11-26 2019-11-06 Automatic concrete pump Active EP3656947B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018129799.8A DE102018129799A1 (en) 2018-11-26 2018-11-26 Truck-mounted concrete pump

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EP3656947A1 true EP3656947A1 (en) 2020-05-27
EP3656947B1 EP3656947B1 (en) 2023-01-04

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EP4092221A1 (en) * 2021-05-19 2022-11-23 Liebherr-Mischtechnik GmbH Automatic concrete pump with prestressed tension strut

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CN201424817Y (en) * 2009-04-24 2010-03-17 徐州重型机械有限公司 Upper frame and chassis connecting device of concrete pump truck and concrete pump truck provided with same
CN105275210A (en) * 2014-07-24 2016-01-27 中联重科股份有限公司 Pump truck bearing structure and concrete pump truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022128326A1 (en) * 2020-12-17 2022-06-23 Putzmeister Engineering Gmbh Frame with a boom pedestal for mounting a thick matter distribution boom
EP4092221A1 (en) * 2021-05-19 2022-11-23 Liebherr-Mischtechnik GmbH Automatic concrete pump with prestressed tension strut

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ES2941917T3 (en) 2023-05-26
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