WO2013004508A1 - Distributing boom for concrete pumps - Google Patents

Distributing boom for concrete pumps Download PDF

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Publication number
WO2013004508A1
WO2013004508A1 PCT/EP2012/061925 EP2012061925W WO2013004508A1 WO 2013004508 A1 WO2013004508 A1 WO 2013004508A1 EP 2012061925 W EP2012061925 W EP 2012061925W WO 2013004508 A1 WO2013004508 A1 WO 2013004508A1
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WO
WIPO (PCT)
Prior art keywords
axis
mast
rotary head
arm
boom
Prior art date
Application number
PCT/EP2012/061925
Other languages
German (de)
French (fr)
Inventor
Matthias Braun
Michael Neubert
Original Assignee
Putzmeister Engineering Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Putzmeister Engineering Gmbh filed Critical Putzmeister Engineering Gmbh
Publication of WO2013004508A1 publication Critical patent/WO2013004508A1/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
    • 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
    • B66C23/54—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 with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors
    • 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
    • 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
    • E04G21/0427—Devices for both conveying and distributing with distribution hose on a static support, e.g. crane

Definitions

  • Distribution Mast for Concrete Pumps The invention relates to a distribution mast for stationary or mobile concrete pumps of the type specified in claim 1.
  • Known distribution booms of this type consist essentially of a rotatable about a rotational axis formed as a vertical axis rotary head and a plurality of relatively pivotable relative to each other or telescopic mast arms assembled arm package.
  • the arm package is articulated at one end of its first mast arm on the turret and by means of a articulated at articulation points of the turret and the first mast arm, linear drive unit about a horizontal bending axis between a substantially horizontal aligned Einfalt ein and a working position.
  • a linear drive unit is preferably understood to mean a cylinder / piston unit, and in particular a hydraulic cylinder.
  • the distribution boom serves in a concrete pump as a carrier for a concrete delivery line.
  • Liquid concrete which is continuously introduced into a material feed container during concreting, is conveyed to a concreting location remote from the location of the vehicle via the concrete delivery line.
  • the arrangement of the mast arms of the arm package and the joints arranged between them is coordinated so that the distributor mast can be stored in its unfolding position to save space on an associated substructure or chassis.
  • the placing mast can be brought into its working position, in which the mast tip can be guided with an end hose over a region to be concreted.
  • the articulation between the first mast arm and the turret and there arranged designed as a cylinder / piston unit linear drive unit. At this joint, the greatest forces and torques occur.
  • the respective bending axis is arranged so that it perpendicularly intersects the axis of rotation of the rotary head.
  • the bending axis is displaced eccentrically to the axis of rotation in the direction of the driver's cab, or in other words that the bending axis is eccentric to the rotational axis of the turret is arranged at the other end of the first mast arm in the fold-in opposite side of the axis of rotation.
  • a rotary feedthrough for the concrete delivery line must be arranged parallel to each axis of rotation.
  • This rotary feedthrough is realized by a respective articulated arc, wherein the axis of rotation of the joint in each case coincides with the axis of rotation of the rotary head and the first boom arm.
  • the rotary unions each form an obstacle to the components to be moved against each other.
  • a particular obstacle is the rotary feedthrough in the area of the rotary head axis designed as a vertical axis.
  • the object of the invention is to improve the known distributor boom to the effect that both a load torque reduction and a shortening of the relevant linear drive unit can be achieved while avoiding a danger of collision with the conveyor line.
  • the solution according to the invention essentially consists in arranging the turret-side articulation point of the linear drive unit for the movement of the first boom arm eccentrically to the rotation axis of the rotary head on the same side as the articulated axis shifted with respect to the rotation axis, and that the linear drive unit with its armature-side articulation point is centered within the formed as a box profile first mast arm and with its turret-side pivot point in the direction of the associated hinge axis centered on the turret.
  • the central arrangement of the articulation points means that only one linear drive unit is arranged between the rotary head and the first boom arm.
  • a significant advantage of the invention is that a cylinder / piston unit as a linear drive unit for the first boom arm is shorter than for the case that the pivot point is arranged on the other side of the Drehkopfgel lenks.
  • the cylinder / piston unit according to the invention can thereby be made lighter.
  • the pivot point of the cylinder / piston unit can be moved on the first mast arm further to the tilting axis. In the case of trained as a box profile mast arm thereby shortening the cut in the box section and the mast arm can be made lighter and stiffer overall.
  • a preferred embodiment of the invention provides that the cylinder / piston unit is articulated with its bottom end on the first mast arm and with its piston rod eccentrically on the turret.
  • the distributor boom according to the invention is preferably used as a carrier for a concrete delivery line in a stationary or mobile concrete pump, wherein the rotary head is rotatably mounted on a substructure or a frame of the concrete pump about its axis of rotation and wherein the guided via the distribution boom delivery line at the pressure output of a frame arranged pump unit is connected.
  • FIG. 1 shows a side view of a truck-mounted concrete pump with a distribution boom designed as a folding mast in its fold-in position
  • Figure 2 shows a distribution boom with three mast arms in its Einfalt ein and in two working positions of its first mast arm.
  • FIG. 2a in perspective view, in plan view and in two sectional views in the unfolded position and in a working position.
  • the truck-mounted concrete pump shown in FIG. 1 comprises a transport vehicle 10, a pumping unit 12 for liquid concrete designed, for example, as a two-cylinder / piston pump, and a distribution mast 14 as a carrier for a delivery line 16. Via the delivery line 16, liquid concrete becomes one of promoted the location of the vehicle 10 arranged concreting.
  • the distribution boom 14 consists of a about a vehicle-fixed vertical axis 18 rotatable, a turntable 20 having turret 22 and one of several, relatively mutually pivotable mast arms 1, 2,3,4 mated Armwe 24, via a pivot point 26 at the end of its first Mastarms 1 articulated on the turret 22 and by means of a hinged at their ends to articulation points 28,30 of the rotary head 22 and the first mast arm 1 cylinder / piston unit 32 about a horizontal bending axis A between a substantially horizontally oriented Einfalt ein and a working position is pivotable.
  • the buckling axes A, B, C, D and the boom arms 1, 2, 3, 4 of the arm package 24 are matched in their dimension and kinematics to one another in such a way that the distributor boom 14 in the unfolded position with a space-saving transport configuration on the transport vehicle 10 can be placed.
  • the cylinder / piston unit 32 as well as the drive units between the other mast arms 1, 2,3,4 is designed as a hydraulic cylinder.
  • a special feature of the invention is that the bending axis A of the first mast arm 1 is so eccentric to the axis of rotation 18 of the rotary head 22 is arranged that it is arranged in the fold-in on the driver's cab 34 facing side of the axis of rotation 18.
  • the bending axis A of the first mast arm 1 is located radially outside the turntable 20 bounding the turret 22.
  • the turret-side articulation point 28 of the cylinder mast / Piston unit 32 is arranged with an eccentricity e eccentric to the rotation axis 18 of the rotary head on the same side as the bending axis A between the first mast arm 1 and the rotary head 22 (Fig. 3c and d).
  • the rotary leadthrough 40 composed of two pipe bends 38 is also indicated in the region of the rotary head 22, which is arranged concentrically with respect to the axis of rotation 18 of the rotary head 22.
  • the invention relates to a distribution boom 14 for stationary or mobile concrete pumps.
  • the distribution boom 14 essentially consists of a rotary head 22 rotatable about a pivot axis 18 designed as a vertical axis and an arm packet 24 composed of a plurality of pivot arms 1, 2, 3, which are pivotable or telescopic relative to one another.
  • the arm packet 24 is at one end of its first Mastarms 1 hinged to the turret 22 and by means of a hinged at their ends to articulation points 28,30 of the rotary head 22 and the first mast arm 1 cylinder / piston unit 32 about a horizontal bending axis A between a substantially horizontally oriented Einfalt ein and a working position.
  • the invention consists essentially in that the bending axis A is arranged eccentrically to the axis of rotation 18 of the rotary head 22 on the other end 36 of the first mast arm 1 in the fold-in opposite side of the axis of rotation 18, and that the turret-side pivot point 28 of the cylinder / piston unit 32 is arranged eccentrically to the axis of rotation 18 of the rotary head 22 on the same side as the bending axis A.

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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

The invention relates to a distributing boom (14) for stationary or mobile concrete pumps. The distributing boom (14) consists essentially of a rotating head (22), which can be rotated about a rotational axis (18) designed as a vertical axis, and an arm assembly (24), which is composed of a plurality of boom arms (1, 2, 3, 4) that can be pivoted or telescoped relative to one another. At one end of the first boom arm (1), the arm assembly (24) is hinged to the rotating head (22) and can be pivoted about a horizontal bending axis (A) between a substantially horizontal folding position and a working position by means of a cylinder/piston unit (32), which is hinged at the ends thereof to hinge points (28, 30) of the rotary head (22) and of the first boom arm (1). The invention is essentially characterized in that only one cylinder/piston unit is arranged between the rotating head (22) and the first boom arm (1), the bending axis (A) in question is arranged eccentrically relative to the rotational axis (18) of the rotating head (22) on the side of the rotational axis (18) which is located opposite the other end (36) of the first boom arm (1) in the folding position, and the hinge point (28) of the cylinder/piston unit (32) on the rotating head side is eccentrically arranged relative to the rotational axis (18) of the rotating head (22) on the same side as the bending axis (A).

Description

Verteilermast für Betonpumpen Beschreibung Die Erfindung betrifft einen Verteilermast für stationäre oder mobile Betonpumpen der im Patentanspruch 1 angegebenen Gattung.  Distribution Mast for Concrete Pumps The invention relates to a distribution mast for stationary or mobile concrete pumps of the type specified in claim 1.
Bekannte Verteilermaste dieser Art bestehen im Wesentlichen aus einem um eine als Hochachse ausgebildete Drehachse verdrehbaren Drehkopf und einem aus mehreren relativ zueinander verschwenkbaren oder teleskopier- baren Mastarmen zusammengesetzten Armpaket. Das Armpaket ist am einen Ende seines ersten Mastarms am Drehkopf angelenkt und mittels einer an Anlenkstellen des Drehkopfs und des ersten Mastarms angelenkten, linearen Antriebseinheit um eine horizontale Knickachse zwischen einer im We- sentlichen horizontal ausgerichteten Einfaltstellung und einer Arbeitsstellung verschwenkbar. Unter einer linearen Antriebseinheit wird im Folgenden bevorzugt eine Zylinder-/Kolbeneinheit, und dabei insbesondere ein Hydrozy- linder verstanden. Der Verteilermast dient in einer Betonpumpe als Träger für eine Betonförderleitung. Über die Betonförderleitung wird Flüssigbeton, der während des Betonierens fortlaufend in einen Materialaufgabebehälter eingebracht wird, zu einer vom Standort des Fahrzeugs entfernt angeordneten Betonierstelle gefördert. Die Anordnung der Mastarme des Armpakets und der zwischen die- sen angeordneten Gelenke ist so aufeinander abgestimmt, dass der Verteilermast in seiner Einfaltstellung raumsparend auf einem zugehörigen Unterbau oder Fahrgestell abgelegt werden kann. Durch eine Aktivierung der Antriebsaggregate zwischen den Mastarmen kann der Verteilermast in seine Arbeitsstellung gebracht werden, in welcher die Mastspitze mit einem End- schlauch über einen zu betonierenden Bereich hinweg geführt werden kann. Eine besondere Bedeutung für den Ein- und Ausfaltvorgang kommt dem Knickgelenk zwischen dem ersten Mastarm und dem Drehkopf und der dort angeordneten, als Zylinder-/Kolbeneinheit ausgebildeten linearen Antriebseinheit zu. An diesem Gelenk treten die größten Kräfte und Drehmomente auf. Üblicherweise wird die betreffende Knickachse so angeordnet, dass sie die Drehachse des Drehkopfs senkrecht schneidet. Um das Lastmoment im Bereich des Drehkopfes zu reduzieren, wurde vor allem für größere Vertei- lermaste auch schon vorgeschlagen, dass die Knickachse exzentrisch zur Drehachse in Richtung Fahrerhaus verschoben ist, oder mit anderen Worten, dass die Knickachse exzentrisch zur Drehachse des Drehkopfs auf der dem anderen Ende des ersten Mastarms in der Einfaltstellung gegenüberliegen- den Seite der Drehachse angeordnet ist. Diese Anordnung des Anlenkpunk- tes relativ zur Drehachse wirkt sich zwar positiv auf das Lastmoment am Drehkopf aus, aufgrund der sich dabei einstellenden Hebelverhältnisse jedoch negativ auf die Länge der linearen Antriebseinheit. Hinzu kommt, dass parallel zu jeder Drehachse eine Drehdurchführung für die Betonförderleitung angeordnet sein muss. Diese Drehdurchführung wird durch jeweils einen Gelenkbogen verwirklicht, wobei die Drehachse des Gelenks jeweils mit der Drehachse des Drehkopfs bzw. des ersten Mastarms zusammenfällt. Die Drehdurchführungen bilden jeweils ein Hindernis für die gegeneinander zu bewegenden Bauteile. Ein besonderes Hindernis stellt dabei die Drehdurch- führung im Bereich der als Hochachse ausgebildeten Drehkopfachse dar. Known distribution booms of this type consist essentially of a rotatable about a rotational axis formed as a vertical axis rotary head and a plurality of relatively pivotable relative to each other or telescopic mast arms assembled arm package. The arm package is articulated at one end of its first mast arm on the turret and by means of a articulated at articulation points of the turret and the first mast arm, linear drive unit about a horizontal bending axis between a substantially horizontal aligned Einfaltstellung and a working position. In the following, a linear drive unit is preferably understood to mean a cylinder / piston unit, and in particular a hydraulic cylinder. The distribution boom serves in a concrete pump as a carrier for a concrete delivery line. Liquid concrete, which is continuously introduced into a material feed container during concreting, is conveyed to a concreting location remote from the location of the vehicle via the concrete delivery line. The arrangement of the mast arms of the arm package and the joints arranged between them is coordinated so that the distributor mast can be stored in its unfolding position to save space on an associated substructure or chassis. By activating the drive units between the mast arms, the placing mast can be brought into its working position, in which the mast tip can be guided with an end hose over a region to be concreted. Of particular importance for the folding and unfolding process is the articulation between the first mast arm and the turret and there arranged, designed as a cylinder / piston unit linear drive unit. At this joint, the greatest forces and torques occur. Usually, the respective bending axis is arranged so that it perpendicularly intersects the axis of rotation of the rotary head. In order to reduce the load torque in the area of the turret, it has also been proposed above all for larger distributor masts that the bending axis is displaced eccentrically to the axis of rotation in the direction of the driver's cab, or in other words that the bending axis is eccentric to the rotational axis of the turret is arranged at the other end of the first mast arm in the fold-in opposite side of the axis of rotation. Although this arrangement of the Anlenkpunk- tes relative to the axis of rotation has a positive effect on the load torque on the turret, but due to the thereby adjusting leverage ratios negative on the length of the linear drive unit. In addition, a rotary feedthrough for the concrete delivery line must be arranged parallel to each axis of rotation. This rotary feedthrough is realized by a respective articulated arc, wherein the axis of rotation of the joint in each case coincides with the axis of rotation of the rotary head and the first boom arm. The rotary unions each form an obstacle to the components to be moved against each other. A particular obstacle is the rotary feedthrough in the area of the rotary head axis designed as a vertical axis.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, den bekannten Verteilermast dahingehend zu verbessern, dass sowohl eine Lastmoment- Reduktion als auch eine Verkürzung der betreffenden linearen Antriebsein- heit unter Vermeidung einer Kollisionsgefahr mit der Förderleitung erzielt werden kann. Proceeding from this, the object of the invention is to improve the known distributor boom to the effect that both a load torque reduction and a shortening of the relevant linear drive unit can be achieved while avoiding a danger of collision with the conveyor line.
Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Wei- terbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen. Die erfindungsgemäße Lösung besteht im Wesentlichen darin, dass die drehkopfseitige Anlenkstelle der linearen Antriebseinheit für die Bewegung des ersten Mastarms exzentrisch zur Drehachse des Drehkopfs auf derselben Seite wie die gegenüber der Drehachse verschobene Knickachse ange- ordnet ist, und dass die lineare Antriebseinheit mit ihrer mastarmseitigen Anlenkstelle mittig innerhalb des als Kastenprofil ausgebildeten ersten Mastarms und mit ihrer drehkopfseitigen Anlenkstelle in Richtung der zugehörigen Gelenkachse mittig am Drehkopf angelenkt ist. Die mittige Anordnung der Anlenkstellen bedeutet mit anderen Worten, dass zwischen dem Drehkopf und dem ersten Mastarm nur eine lineare Antriebseinheit angeordnet ist. To solve this problem, the feature combination specified in claim 1 is proposed. Advantageous embodiments and further developments of the invention will become apparent from the dependent claims. The solution according to the invention essentially consists in arranging the turret-side articulation point of the linear drive unit for the movement of the first boom arm eccentrically to the rotation axis of the rotary head on the same side as the articulated axis shifted with respect to the rotation axis, and that the linear drive unit with its armature-side articulation point is centered within the formed as a box profile first mast arm and with its turret-side pivot point in the direction of the associated hinge axis centered on the turret. In other words, the central arrangement of the articulation points means that only one linear drive unit is arranged between the rotary head and the first boom arm.
Ein wesentlicher Vorteil der Erfindung besteht darin, dass eine Zylinder-/Kol- beneinheit als lineare Antriebseinheit für den ersten Mastarm kürzer ist als für den Fall, dass der Anlenkpunkt auf der anderen Seite des Drehkopfge- lenks angeordnet ist. Die Zylinder-/Kolbeneinheit gemäß der Erfindung kann dadurch leichter ausgebildet werden. Außerdem kann der Anlenkpunkt der Zylinder-/Kolbeneinheit am ersten Mastarm weiter zur Kippachse hin verschoben werden. Im Falle des als Kastenprofil ausgebildeten Mastarms kann dadurch der Ausschnitt im Kastenprofil verkürzt und der Mastarm insgesamt leichter und steifer ausgebildet werden. A significant advantage of the invention is that a cylinder / piston unit as a linear drive unit for the first boom arm is shorter than for the case that the pivot point is arranged on the other side of the Drehkopfgel lenks. The cylinder / piston unit according to the invention can thereby be made lighter. In addition, the pivot point of the cylinder / piston unit can be moved on the first mast arm further to the tilting axis. In the case of trained as a box profile mast arm thereby shortening the cut in the box section and the mast arm can be made lighter and stiffer overall.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, dass die Zylinder- /Kolbeneinheit mit ihrem bodenseitigen Ende am ersten Mastarm und mit ihrer Kolbenstange exzentrisch am Drehkopf angelenkt ist. A preferred embodiment of the invention provides that the cylinder / piston unit is articulated with its bottom end on the first mast arm and with its piston rod eccentrically on the turret.
Der erfindungsgemäße Verteilermast wird bevorzugt als Träger für eine Betonförderleitung in einer stationären oder mobilen Betonpumpe verwendet, wobei der Drehkopf an einem Unterbau oder einem Gestell der Betonpumpe um seine Drehachse verdrehbar angeordnet ist und wobei die über den Ver- teilermast geführte Förderleitung an dem Druckausgang eines gestellfest angeordneten Pumpaggregats angeschlossen ist. Inn Folgenden wird die Erfindung anhand eines in der Zeichnung in schemati- scher Weise dargestellten Ausführungsbeispiels näher erläutert. Es zeigen The distributor boom according to the invention is preferably used as a carrier for a concrete delivery line in a stationary or mobile concrete pump, wherein the rotary head is rotatably mounted on a substructure or a frame of the concrete pump about its axis of rotation and wherein the guided via the distribution boom delivery line at the pressure output of a frame arranged pump unit is connected. In the following, the invention will be explained in more detail with reference to an exemplary embodiment shown diagrammatically in the drawing. Show it
Fig. 1 eine Seitenansicht einer Autobetonpumpe mit einem als Knick- mast ausgebildeten Verteilermast in seiner Einfaltstellung; 1 shows a side view of a truck-mounted concrete pump with a distribution boom designed as a folding mast in its fold-in position;
Fig. 2 einen Verteilermast mit drei Mastarmen in seiner Einfaltstellung und in zwei Arbeitsstellungen seines ersten Mastarms; Fig. 3a bis d den ersten Mastarm mit Drehkopf des Verteilermasts nach Figure 2 shows a distribution boom with three mast arms in its Einfaltstellung and in two working positions of its first mast arm. Fig. 3a to d the first mast arm with turret of the distribution mast after
Fig. 2a in schaubildlicher Darstellung, in Draufsicht und in zwei Schnittdarstellungen in der Einfaltstellung und in einer Arbeitsstellung. Die in Fig. 1 dargestellte Autobetonpumpe umfasst ein Transportfahrzeug 10, ein beispielsweise als Zweizylinder-/Kolbenpumpe ausgebildetes Pumpaggregat 12 für Flüssigbeton sowie einen Verteilermast 14 als Träger für eine Förderleitung 16. Über die Förderleitung 16 wird in der Arbeitsstellung des Verteilermasts 14 Flüssigbeton zu einer von dem Standort des Fahrzeugs 10 entfernt angeordneten Betonierstelle gefördert.  Fig. 2a in perspective view, in plan view and in two sectional views in the unfolded position and in a working position. The truck-mounted concrete pump shown in FIG. 1 comprises a transport vehicle 10, a pumping unit 12 for liquid concrete designed, for example, as a two-cylinder / piston pump, and a distribution mast 14 as a carrier for a delivery line 16. Via the delivery line 16, liquid concrete becomes one of promoted the location of the vehicle 10 arranged concreting.
Der Verteilermast 14 besteht aus einem um eine fahrzeugfeste Hochachse 18 drehbaren, einen Drehkranz 20 aufweisenden Drehkopf 22 und einem aus mehreren, relativ zueinander verschwenkbaren Mastarmen 1 ,2,3,4 zusam- mengesetzten Armpaket 24, das über eine Anlenkstelle 26 am Ende seines ersten Mastarms 1 am Drehkopf 22 angelenkt und mittels einer mit ihren Enden an Anlenkstellen 28,30 des Drehkopfs 22 und des ersten Mastarms 1 angelenkten Zylinder-/Kolbeneinheit 32 um eine horizontale Knickachse A zwischen einer im Wesentlichen horizontal ausgerichteten Einfaltstellung und einer Arbeitsstellung verschwenkbar ist. Die Knickachsen A, B, C, D und die Mastarme 1 ,2,3,4 des Armpakets 24 sind in ihrer Abmessung und Kinematik so aufeinander abgestimmt, dass der Verteilermast 14 in der Einfaltstellung mit einer raumsparenden Transportkonfiguration auf dem Transportfahrzeug 10 auflegbar ist. Die Zylinder-/Kolbeneinheit 32 ist ebenso wie die Antriebsaggregate zwischen den übrigen Mastarmen 1 ,2,3,4 als Hydrozylinder ausgebildet. Durch programmgesteuerte Aktivierung der Antriebsaggregate, die den Knickachsen A, B, C, D einzeln zugeordnet sind, ist der Verteilermast in unterschiedlichen Distanzen und/oder Höhendifferenzen zwischen der Betonierstelle und dem Fahrzeugstandort entfaltbar. Beispielhaft ist dies in Fig. 2 durch das Ausfalten des Mastarms 1 verdeutlicht. Der Pumpenfahrer steuert z.B. mittels einer Funkfernsteuerung die Mastbewegungen, durch die die Mastspitze mit ihrem in der Zeichnung nicht dargestellten Endschlauch über den zu betonierenden Bereich hinweg geführt wird. The distribution boom 14 consists of a about a vehicle-fixed vertical axis 18 rotatable, a turntable 20 having turret 22 and one of several, relatively mutually pivotable mast arms 1, 2,3,4 mated Armpaket 24, via a pivot point 26 at the end of its first Mastarms 1 articulated on the turret 22 and by means of a hinged at their ends to articulation points 28,30 of the rotary head 22 and the first mast arm 1 cylinder / piston unit 32 about a horizontal bending axis A between a substantially horizontally oriented Einfaltstellung and a working position is pivotable. The buckling axes A, B, C, D and the boom arms 1, 2, 3, 4 of the arm package 24 are matched in their dimension and kinematics to one another in such a way that the distributor boom 14 in the unfolded position with a space-saving transport configuration on the transport vehicle 10 can be placed. The cylinder / piston unit 32 as well as the drive units between the other mast arms 1, 2,3,4 is designed as a hydraulic cylinder. By program-controlled activation of the drive units, which are assigned to the buckling axes A, B, C, D individually, the distribution boom at different distances and / or height differences between the concreting and the vehicle location is deployable. By way of example, this is illustrated in FIG. 2 by the unfolding of the mast arm 1. The pump driver controls eg by means of a radio remote control the mast movements through which the mast tip is guided with its end hose, not shown in the drawing over the area to be concreted away.
Eine Besonderheit der Erfindung besteht darin, dass die Knickachse A des ersten Mastarms 1 so exzentrisch zur Drehachse 18 des Drehkopfs 22 an- geordnet ist, dass sie in der Einfaltstellung auf der dem Fahrerhaus 34 zugewandten Seite der Drehachse 18 angeordnet ist. Mit anderen Worten heißt dies, dass die Knickachse A exzentrisch zur Drehachse 18 des Drehkopfs 22 auf der dem freien Ende 36 des Armpakets 24 in der Einfaltstellung gegenüberliegenden Seite der Drehachse 18 angeordnet ist. Mit dieser Maßnahme wird bei gegebener Verteilermastlänge eine Lastmoment-Reduktion im Bereich des Drehkopfs 22 erzielt. Wie aus Fig. 2 und 3a bis c zu ersehen ist, befindet sich die Knickachse A des ersten Mastarms 1 radial außerhalb des den Drehkopf 22 begrenzenden Drehkranzes 20. Eine weitere Besonderheit der Erfindung besteht darin, dass die drehkopfsei- tige Anlenkstelle 28 der Zylinder-/Kolbeneinheit 32 mit einer Exzentrizität e exzentrisch zur Drehachse 18 des Drehkopfs auf derselben Seite wie die Knickachse A zwischen dem ersten Mastarm 1 und dem Drehkopf 22 angeordnet ist (Fig. 3c und d). Damit wird eine besonders leichte Bauweise der betreffenden Zylinder-/Kolbeneinheit 32 ermöglicht. Außerdem ist in den Fig. 3a bis d erkennbar, dass nur eine Zylinder-/Kolbeneinheit 32 vorgesehen ist, deren mastarmseitige Anlenkstelle 30 mittig innerhalb des als Kastenprofil ausgebildeten ersten Mastarms 1 und deren drehkopfseitige Anlenkstelle 32 in Richtung der zugehörigen Gelenkachse 29 mittig am Drehkopf angelenkt ist. Von besonderem Vorteil ist hierbei, dass die Zylinder-/Kolbeneinheit 32 mit ihrem zylinderseitigen Ende an der Anlenkstelle 30 des ersten Mastarms 1 und mit ihrer Kolbenstange exzentrisch an der Anlenkstelle 28 des Drehkopfs 22 angelenkt ist. A special feature of the invention is that the bending axis A of the first mast arm 1 is so eccentric to the axis of rotation 18 of the rotary head 22 is arranged that it is arranged in the fold-in on the driver's cab 34 facing side of the axis of rotation 18. In other words, this means that the bending axis A is arranged eccentrically to the rotation axis 18 of the rotary head 22 on the opposite side of the rotation axis 18 to the free end 36 of the arm package 24 in the unfolding position. With this measure, a load torque reduction in the region of the rotary head 22 is achieved for a given distributor boom length. As can be seen from FIGS. 2 and 3a to c, the bending axis A of the first mast arm 1 is located radially outside the turntable 20 bounding the turret 22. Another special feature of the invention is that the turret-side articulation point 28 of the cylinder mast / Piston unit 32 is arranged with an eccentricity e eccentric to the rotation axis 18 of the rotary head on the same side as the bending axis A between the first mast arm 1 and the rotary head 22 (Fig. 3c and d). For a particularly lightweight design of the respective cylinder / piston unit 32 is made possible. In addition, it can be seen in FIGS. 3a to d that only one cylinder / piston unit 32 is provided, whose mast arm-side articulation point 30 is centered within the box profile trained first mast arm 1 and the turret-side pivot point 32 is hinged in the direction of the associated hinge axis 29 centrally on the turret. Of particular advantage here is that the cylinder / piston unit 32 is articulated with its cylinder-side end at the articulation point 30 of the first mast arm 1 and with its piston rod eccentrically at the articulation point 28 of the rotary head 22.
In Fig. 2 und 3c ist außerdem die aus zwei Rohrbögen 38 zusammengesetzte Drehdurchführung 40 im Bereich des Drehkopfs 22 angedeutet, die kon- zentrisch zur Drehachse 18 des Drehkopfs 22 angeordnet ist. In FIGS. 2 and 3 c, the rotary leadthrough 40 composed of two pipe bends 38 is also indicated in the region of the rotary head 22, which is arranged concentrically with respect to the axis of rotation 18 of the rotary head 22.
Zusammenfassend ist folgendes festzuhalten: Die Erfindung bezieht sich auf einen Verteilermast 14 für stationäre oder mobile Betonpumpen. Der Verteilermast 14 besteht im Wesentlichen aus einem um eine als Hochachse aus- gebildete Drehachse 18 verdrehbaren Drehkopf 22 und einem aus mehreren relativ zueinander verschwenkbaren oder teleskopierbaren Mastarmen 1 ,2,3,4 zusammengesetzten Armpaket 24. Das Armpaket 24 ist am einen Ende seines ersten Mastarms 1 am Drehkopf 22 angelenkt und mittels einer an ihren Enden an Anlenkstellen 28,30 des Drehkopfs 22 und des ersten Mastarms 1 angelenkten Zylinder-/Kolbeneinheit 32 um eine horizontale Knickachse A zwischen einer im Wesentlichen horizontal ausgerichteten Einfaltstellung und einer Arbeitsstellung verschwenkbar. Die Erfindung besteht im Wesentlichen darin, dass die Knickachse A exzentrisch zur Drehachse 18 des Drehkopfs 22 auf der dem anderen Ende 36 des ersten Mastarms 1 in der Einfaltstellung gegenüberliegenden Seite der Drehachse 18 angeordnet ist, und dass die drehkopfseitige Anlenkstelle 28 der Zylinder-/Kolbeneinheit 32 exzentrisch zur Drehachse 18 des Drehkopfs 22 auf derselben Seite wie die Knickachse A angeordnet ist. Bezugszeichenliste: In summary, the following should be noted: The invention relates to a distribution boom 14 for stationary or mobile concrete pumps. The distribution boom 14 essentially consists of a rotary head 22 rotatable about a pivot axis 18 designed as a vertical axis and an arm packet 24 composed of a plurality of pivot arms 1, 2, 3, which are pivotable or telescopic relative to one another. The arm packet 24 is at one end of its first Mastarms 1 hinged to the turret 22 and by means of a hinged at their ends to articulation points 28,30 of the rotary head 22 and the first mast arm 1 cylinder / piston unit 32 about a horizontal bending axis A between a substantially horizontally oriented Einfaltstellung and a working position. The invention consists essentially in that the bending axis A is arranged eccentrically to the axis of rotation 18 of the rotary head 22 on the other end 36 of the first mast arm 1 in the fold-in opposite side of the axis of rotation 18, and that the turret-side pivot point 28 of the cylinder / piston unit 32 is arranged eccentrically to the axis of rotation 18 of the rotary head 22 on the same side as the bending axis A. LIST OF REFERENCE NUMBERS
A,B,C,D Knickachsen A, B, C, D buckling axes
1 ,2,3,4 Mastarme  1, 2,3,4 boom arms
10 Gestell, Transportfahrzeug  10 rack, transport vehicle
12 Pumpaggregat  12 pump unit
14 Verteilermast  14 distribution boom
16 Förderleitung  16 support line
18 Hochachse, Drehachse  18 vertical axis, rotation axis
20 Drehkranz  20 turntable
22 Dreh köpf  22 turning head
24 Armpaket  24 arm package
26,28,30 Anlenkstellen  26,28,30 articulation points
29 Gelenkachse  29 joint axis
32 lineare Antriebseinheit (Zylinder-/Kolbeneinheit) 32 linear drive unit (cylinder / piston unit)
34 Fahrerhaus 34 cab
36 freies Ende  36 free end
38 Rohrbogen  38 pipe bend
40 Drehdurchführung  40 rotary feedthrough

Claims

Verteilernnast für stationäre oder mobile Betonpumpen mit einem um eine als Hochachse ausgebildete Drehachse (18) verdrehbaren Drehkopf (22), mit einem aus mehreren relativ zueinander verschwenkbaren oder teleskopierbaren Mastarmen (1 ,2,3,4) zusammengesetzten Armpaket (24), das am einen Ende seines ersten Mastarms (1 ) am Drehkopf (22) angelenkt und mittels einer mit ihren Enden an Anlenkstellen (28,30) des Drehkopfs (22) und des ersten Mastarms (1 ) angelenkten linearen Antriebseinheit (32) um eine horizontale Knickachse (A) zwischen einer im Wesentlichen horizontal ausgerichteten Einfaltstellung und einer Arbeitsstellung verschwenkbar ist, wobei die Knickachse (A) exzentrisch zur Drehachse (18) des Drehkopfs (22) auf der dem anderen Ende (36) des ersten Mastarms (1 ) in der Einfaltstellung gegenüberliegenden Seite der Drehachse (18) angeordnet ist, wobei die drehkopfseitige Anlenkstelle (28) der linearen Antriebseinheit (32) exzentrisch zur Drehachse (18) des Drehkopfs (22) auf derselben Seite wie die Knickachse (A) angeordnet ist, und wobei die lineare Antriebseinheit (32) mit ihrer mastarmseitigen Anlenkstelle (30) mittig innerhalb des als Kastenprofil ausgebildeten ersten Mastarms (1 ) und mit ihrer drehkopfseitigen Anlenkstelle (28) in Richtung der zugehörigen Gelenkachse (29) mittig am Drehkopf (22) angelenkt ist. Distributor for stationary or mobile concrete pumps with a rotatable about a pivot axis designed as a pivot axis (18) rotary head (22), with a plurality of relatively pivotable or telescopic mast arms (1, 2,3,4) assembled arm package (24), the one end of its first mast arm (1) articulated on the rotary head (22) and by means of a with their ends at articulation points (28,30) of the rotary head (22) and the first mast arm (1) hinged linear drive unit (32) about a horizontal bending axis ( A) is pivotable between a substantially horizontally oriented Einfaltstellung and a working position, wherein the bending axis (A) eccentric to the rotational axis (18) of the rotary head (22) on the other end (36) of the first mast arm (1) in the Einfaltstellung opposite Side of the rotation axis (18) is arranged, wherein the turret-side articulation point (28) of the linear drive unit (32) eccentrically to the axis of rotation (18) of the rotary head (22) on d the same side as the bending axis (A) is arranged, and wherein the linear drive unit (32) with its mastarmseitigen articulation point (30) centrally within the formed as a box profile first mast arm (1) and with its turret side articulation point (28) in the direction of the associated hinge axis (29) is articulated centrally on the turret (22).
Verteilermast nach Anspruch 1 , dadurch gekennzeichnet, dass die lineare Antriebseinheit als Zylinder-/Kolbeneinheit (32), insbesondere als Hydrozylinder, ausgebildet ist. Distributor mast according to claim 1, characterized in that the linear drive unit as a cylinder / piston unit (32), in particular as a hydraulic cylinder is formed.
Verteilermast nach Anspruch 2, dadurch gekennzeichnet, dass die Zylinder-/Kolbeneinheit (32) mit ihrem bodenseitigen Ende an der Anlenkstelle (30) des ersten Mastarms (1 ) und mit ihrer Kolbenstange exzentrisch an der Anlenkstelle (28) des Drehkopfs (22) angelenkt ist. Verteilermast nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Knickachse (A) radial außerhalb eines den Drehkopf begrenzenden Drehkranzes angeordnet ist. Distributor mast according to claim 2, characterized in that the cylinder / piston unit (32) with its bottom end at the articulation point (30) of the first mast arm (1) and with its piston rod eccentrically articulated to the articulation point (28) of the rotary head (22) is. Distributor mast according to one of claims 1 to 3, characterized in that the articulation axis (A) is arranged radially outside of the rotary head limiting slewing ring.
Verwendung des Verteilermasts nach einem der Ansprüche 1 bis 4 als Träger für eine Förderleitung (16) in einer stationären oder mobilen Betonpumpe, wobei der Drehkopf (22) an einem Unterbau oder einem Gestell (10) der Betonpumpe um seine Drehachse (18) verdrehbar angeordnet ist und wobei die über den Verteilermast (14) geführte Förderleitung (16) an den Druckausgang eines gestellfest angeordneten Pumpaggregats (12) angeschlossen ist. Use of the distributor boom according to one of claims 1 to 4 as a carrier for a delivery line (16) in a stationary or mobile concrete pump, wherein the turret (22) on a substructure or a frame (10) of the concrete pump about its axis of rotation (18) rotatably arranged and wherein the conveying line (16) guided via the distributor boom (14) is connected to the pressure outlet of a pumping unit (12) arranged fixed to the frame.
PCT/EP2012/061925 2011-07-07 2012-06-21 Distributing boom for concrete pumps WO2013004508A1 (en)

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JP2017536491A (en) * 2014-10-14 2017-12-07 プッツマイスター エンジニアリング ゲーエムベーハー Boom arm and concrete distribution boom

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