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EP3180485B2 - Work machine - Google Patents
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EP3180485B2 - Work machine - Google Patents

Work machine Download PDF

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Publication number
EP3180485B2
EP3180485B2 EP15744222.9A EP15744222A EP3180485B2 EP 3180485 B2 EP3180485 B2 EP 3180485B2 EP 15744222 A EP15744222 A EP 15744222A EP 3180485 B2 EP3180485 B2 EP 3180485B2
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EP
European Patent Office
Prior art keywords
supporting
work machine
mast
boom
supported
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.)
Active
Application number
EP15744222.9A
Other languages
German (de)
French (fr)
Other versions
EP3180485A1 (en
EP3180485B1 (en
Inventor
Benjamin RAU
Eva DAUM
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.)
Putzmeister Engineering GmbH
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Putzmeister Engineering GmbH
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Publication date
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Application filed by Putzmeister Engineering GmbH filed Critical Putzmeister Engineering GmbH
Publication of EP3180485A1 publication Critical patent/EP3180485A1/en
Publication of EP3180485B1 publication Critical patent/EP3180485B1/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
    • E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
    • 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
    • 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
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/38—Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms

Definitions

  • the invention relates to a working machine according to the preamble of claim 1.
  • Such working machines equipped with a mast such as mobile concrete pumps, pump mixers, excavators or cranes, usually have at least two mast arms which can be pivoted in relation to one another in order to be able to fold the mast, which can have a considerable length, together to save space for transport.
  • the mast arms are placed one on top of the other in the folded state, with only the last mast arm having a free end being supported with its free end or near the free end on a support device fixed to the chassis.
  • the other mast arms lying on top of each other, on the other hand are each supported only on the next lower mast arm.
  • support devices are often arranged on the mast arms, on which the next upper mast arm of the folded mast is supported.
  • pump mixers which usually have a much smaller mast than a truck-mounted concrete pump and on whose chassis there is little space due to other equipment such as the mixing drum, such a support is often not possible.
  • JP S62 140088 U discloses a working machine according to the preamble of claim 1.
  • the invention is based on the idea of providing support at a point where there is more space in the area of the joint connecting the two mast arms so that they can pivot, and which is always located at one of the two ends of the package formed by the mast arms lying on top of each other when the mast is in the folded state present than in the middle of the mast arms. It is possible that only one joint is supported on a support device that is preferably fixed to the chassis. However, it is preferred that several or all joints are each supported on a support device, in which case a number of support devices corresponding to the number of supported joints must be present.
  • the component of the respective joint which rests on the support surface of the support device, can, for example, be a lever which is rotatably connected to the two mast arms connected to one another by the joint and which serves to transmit a force for the mutual pivoting of the mast arms, for example a reversing lever.
  • the supported component is a joint bolt which connects two parts of the joint in a pivotable manner and which is supported on the supporting surface in question.
  • the pivot pin may have a sleeve surrounding it, which rests on the bearing surface in question. At least one of the joint pins has a support part which protrudes in the axial direction beyond the joint parts connected by it and which is supported on the relevant support surface.
  • a roller which can be rotated about a longitudinal axis of the hinge pin and rests on the relevant support surface can advantageously be placed.
  • the hinge pin When the roll is laid down on the support surface, the hinge pin usually also executes a movement with a component parallel to the support surface, so that the roll rolls onto the latter. This leads to protection of the support surface, especially when the roller is made of soft, wear-resistant plastic.
  • At least one and preferably each of the support surfaces expediently extends so far in a direction perpendicular to the longitudinal axis of the associated pivot pin that it protrudes over the roller on both sides.
  • the roll then has enough space to roll on the support surface during the entire depositing process.
  • at least one and preferably each of the support surfaces has a channel shape with a bottom surface and with side walls extending obliquely upwards on both sides of edges of the bottom surface running perpendicular to the longitudinal axis of the hinge pin. When the roll rolls on the support surface, the side walls center the roll by deflecting it towards the bottom surface.
  • another support device fixed to the chassis can be provided, on which the free end of the last mast arm is supported, in order to further improve the support of the entire mast.
  • the further support device can be planked with a slidable layer made of wear-resistant plastic, just as the support surface can also be made of wear-resistant plastic.
  • an aramid and in particular a plastic referred to as polyaramid 6, comes into consideration as the plastic for the planking of the additional support device, for the support surface(s) and for the roller(s).
  • a part of a pump mixer 10 is shown in detail, which has a chassis (not shown in detail) and a mast bracket 14 fixed to the chassis and having a rotating head 12 rotatable about a vertical axis of rotation.
  • the pump mixer 10 also has a mast 16 which carries a concrete delivery line 18 with which concrete can be delivered to a place of use by means of a concrete pump.
  • the mast 16 has four mast arms 20, 22, 24, 26 which are connected to one another in an articulated manner, a first of the mast arms 20 being mounted on the rotary head 12 so as to be pivotable about a horizontal pivot axis.
  • a second of the mast arms 22 is pivotably connected to the first mast arm 20 by means of a joint, not shown here, and to a third of the mast arms 24 by means of a joint 28.
  • the third mast arm 24 is connected to a fourth of the mast arms 26 by means of a joint, not shown. which has a free end 30 at or near which the concrete delivery line 18 ends.
  • the joint 28 connecting the second boom arm 22 to the third boom arm 24 has a deflection lever 34 acted upon by a hydraulic cylinder 32, the application of force to which by the hydraulic cylinder 32 causes a pivoting movement of the third boom arm 24 with respect to the second boom arm 22.
  • Identical or similar joints are also arranged between the first mast arm 20 and the second mast arm 22 and between the third mast arm 24 and the fourth mast arm 26, but are not shown in the drawing.
  • the joint 28 has two web plates 36 arranged at a distance from one another and a joint pin 38 which connects the web plates 36 to one another and is rotatably guided through each of the web plates 36, which has a supporting part 40 which protrudes in its axial direction beyond the outside of one of the web plates 36.
  • the web plates 36 are articulated on the one hand on the third mast arm 24 and on the other hand on a piston rod 37 of the cylinder 32 .
  • a connection to the second mast arm 22 is provided by levers 39 articulated on both sides of the second mast arm 22 and on the pivot pin 38 .
  • a roller 42 made of plastic is rotatably mounted on the support section 40 .
  • a support device 44 which is fixed to the chassis in the exemplary embodiment shown is provided and has a support surface 46 directed upwards. in 1 shown folded state of the mast 14, in which the mast arms 20, 22, 24, 26 are arranged one on top of the other or with only a small distance from each other, the roller 42 is on the support surface 46 on.
  • the support surface 46 is formed by a substantially horizontally running base surface 48 and two side walls 50 on both sides of the base surface 48 extending in a direction perpendicular to the longitudinal axis of the hinge pin 38 and forming an obtuse angle with the base surface 48 .
  • the channel shape of the support surface 46 has a centering effect when the roller 42 is set down, so that the roller 42 does not have to be placed exactly on the bottom surface 48 but rather slides down the respective side wall 50 when it is placed a little way next to the bottom surface 48 .
  • the support surface 46 also extends a little in the direction perpendicular to the longitudinal axis of the hinge pin 38, so that the roller 42 can roll a little on it when it is placed on it.
  • a further support device 52 preferably fixed to the chassis, is also provided, on which a component 54 arranged at the free end 30 is supported.
  • the invention relates to a work machine 10 with a chassis, with a mast block 14 mounted on the chassis and having a rotating head 12 that can be rotated about a vertical axis of rotation, and with a mast 16 having at least two mast arms 20, 22, 24, 26, Each of the mast arms 20, 22, 24, with the exception of a last mast arm 26 having a free end 30, starting from a first mast arm 20, is pivotably connected to the respectively following mast arm 22, 24, 26 by means of a joint 28, and the first mast arm 20 is pivotable by a horizontal pivot axis is pivotally mounted on the rotary head 12.
  • at least one support device 44 which is preferably fixed to the chassis, is provided, which has a support surface 46 on which a component of the joint 28 or a component of one of the joints 28 is supported.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Auxiliary Devices For Music (AREA)
  • Agricultural Machines (AREA)
  • Body Structure For Vehicles (AREA)

Description

Die Erfindung betrifft eine Arbeitsmaschine gemäß Oberbegriff des Anspruchs 1.
Solche mit einem Mast ausgestatteten Arbeitsmaschinen, wie beispielsweise fahrbare Betonpumpen, Pumpmischer, Bagger oder Kräne, weisen in der Regel mindestens zwei Mastarme auf, welche gegeneinander verschwenkbar sind, um den Mast, der eine beachtliche Länge aufweisen kann, zum Transport platzsparend zusammenfalten zu können. Die Mastarme werden im gefalteten Zustand dabei aufeinandergelegt, wobei lediglich der letzte, ein freies Ende aufweisende Mastarm mit seinem freien Ende oder nahe dem freien Ende auf einer fahrgestellfesten Abstützeinrichtung abgestützt wird. Die weiteren, aufeinanderliegenden Mastarme stützen sich dagegen jeweils lediglich auf dem nächstunteren Mastarm ab. Zu diesem Zweck sind oftmals an den Mastarmen Abstützeinrichtungen angeordnet, auf denen der jeweils nächstobere Mastarm des gefalteten Masts abgestützt wird. Bei vielen kleineren Maschinen, beispielsweise bei Pumpmischern, die in der Regel einen wesentlich kleineren Mast aufweisen als eine Autobetonpumpe und auf deren Fahrgestell aufgrund weiterer Einrichtungen wie der Mischtrommel wenig Platz vorhanden ist, ist eine solche Abstützung aber oft nicht möglich.The invention relates to a working machine according to the preamble of claim 1.
Such working machines equipped with a mast, such as mobile concrete pumps, pump mixers, excavators or cranes, usually have at least two mast arms which can be pivoted in relation to one another in order to be able to fold the mast, which can have a considerable length, together to save space for transport. The mast arms are placed one on top of the other in the folded state, with only the last mast arm having a free end being supported with its free end or near the free end on a support device fixed to the chassis. The other mast arms lying on top of each other, on the other hand, are each supported only on the next lower mast arm. For this purpose, support devices are often arranged on the mast arms, on which the next upper mast arm of the folded mast is supported. With many smaller machines, such as pump mixers, which usually have a much smaller mast than a truck-mounted concrete pump and on whose chassis there is little space due to other equipment such as the mixing drum, such a support is often not possible.

JP S62 140088 U offenbart eine Arbeitsmaschine gemäß dem Oberbegriff des Anspruchs 1. JP S62 140088 U discloses a working machine according to the preamble of claim 1.

Es ist daher Aufgabe der Erfindung, eine Arbeitsmaschine der eingangs genannten Art derart weiterzubilden, dass ihr Mast besser abgestützt werden kann.
Diese Aufgabe wird erfindungsgemäß durch eine Arbeitsmaschine mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.It is therefore the object of the invention to further develop a work machine of the type mentioned at the outset in such a way that its mast can be better supported.
According to the invention, this object is achieved by a work machine having the features of claim 1 . Advantageous developments of the invention are the subject matter of the dependent claims.

Der Erfindung liegt der Gedanke zugrunde, im Bereich des zwei Mastarme miteinander verschwenkbar verbindenden Gelenks, das sich im gefalteten Zustand des Masts stets an einem der beiden Enden des durch die aufeinanderliegenden Mastarme gebildeten Pakets befindet, eine Abstützung an einer Stelle bereitzustellen, an der mehr Platz vorhanden ist als in der Mitte der Mastarme. Dabei ist es möglich, dass nur ein Gelenk auf einer vorzugsweise fahrgestellfesten Abstützeinrichtung abgestützt ist. Es wird jedoch bevorzugt, dass mehrere oder alle Gelenke jeweils auf einer Abstützeinrichtung abgestützt sind, wobei dann eine der Anzahl der abgestützten Gelenke entsprechende Anzahl von Abstützeinrichtungen vorhanden sein muss.
Das Bauteil des jeweiligen Gelenks, das auf der Abstützfläche der Abstützeinrichtung ruht, kann beispielsweise ein mit den beiden durch das Gelenk miteinander verbundenen Mastarmen jeweils drehbeweglich verbundener Hebel sein, der der Übertragung einer Kraft zum gegenseitigen Verschwenken der Mastarme dient, beispielsweise ein Umlenkhebel. Es handelt sich bei dem abgestützten Bauteil um einen zwei Teile des Gelenks miteinander verschwenkbar verbindenden Gelenkbolzen, der auf der betreffenden Abstützfläche abgestützt ist. Der Gelenkbolzen kann eine ihn umhüllende Buchse aufweisen, welche auf der betreffenden Abstützfläche ruht. Mindestens einer der Gelenkbolzen weist eine in axialer Richtung über die durch ihn verbundenen Gelenkteile überstehende Abstützpartie auf, welche auf der betreffenden Abstützfläche abgestützt ist. Auf mindestens einer und vorzugsweise auf jeder der Abstützpartien kann vorteilhaft eine um eine Längsachse des Gelenkbolzens drehbare Rolle aufgesetzt sein, welche auf der betreffenden Abstützfläche ruht. Beim Ablegen der Rolle auf der Abstützfläche führt der Gelenkbolzen meist auch eine Bewegung mit einer Komponente parallel zur Abstützfläche aus, so dass die Rolle auf Letzterer abrollt. Dies führt zu einer Schonung der Abstützfläche, insbesondere dann, wenn die Rolle aus weichem, verschleißfestem Kunststoff ausgeführt ist.The invention is based on the idea of providing support at a point where there is more space in the area of the joint connecting the two mast arms so that they can pivot, and which is always located at one of the two ends of the package formed by the mast arms lying on top of each other when the mast is in the folded state present than in the middle of the mast arms. It is possible that only one joint is supported on a support device that is preferably fixed to the chassis. However, it is preferred that several or all joints are each supported on a support device, in which case a number of support devices corresponding to the number of supported joints must be present.
The component of the respective joint, which rests on the support surface of the support device, can, for example, be a lever which is rotatably connected to the two mast arms connected to one another by the joint and which serves to transmit a force for the mutual pivoting of the mast arms, for example a reversing lever. The supported component is a joint bolt which connects two parts of the joint in a pivotable manner and which is supported on the supporting surface in question. The pivot pin may have a sleeve surrounding it, which rests on the bearing surface in question. At least one of the joint pins has a support part which protrudes in the axial direction beyond the joint parts connected by it and which is supported on the relevant support surface. On at least one and preferably on each of the support parts, a roller which can be rotated about a longitudinal axis of the hinge pin and rests on the relevant support surface can advantageously be placed. When the roll is laid down on the support surface, the hinge pin usually also executes a movement with a component parallel to the support surface, so that the roll rolls onto the latter. This leads to protection of the support surface, especially when the roller is made of soft, wear-resistant plastic.

Zweckmäßig erstreckt sich mindestens eine und vorzugsweise jede der Abstützflächen so weit in einer Richtung senkrecht zur Längsachse des zugehörigen Gelenkbolzens, dass sie zu beiden Seiten über die Rolle übersteht. Die Rolle hat dann genügend Platz, um während des gesamten Ablegevorgangs auf der Abstützfläche abzurollen. Dabei wird bevorzugt, dass mindestens eine und vorzugsweise jede der Abstützflächen eine Rinnenform aufweist mit einer Bodenfläche und mit sich zu beiden Seiten von senkrecht zur Längsachse des Gelenkbolzens verlaufenden Rändern der Bodenfläche schräg nach oben erstreckenden Seitenwänden. Die Seitenwände führen beim Abrollen der Rolle auf der Abstützfläche zu einer Zentrierung der Rolle, indem sie diese zur Bodenfläche hin ableiten.At least one and preferably each of the support surfaces expediently extends so far in a direction perpendicular to the longitudinal axis of the associated pivot pin that it protrudes over the roller on both sides. The roll then has enough space to roll on the support surface during the entire depositing process. It is preferred that at least one and preferably each of the support surfaces has a channel shape with a bottom surface and with side walls extending obliquely upwards on both sides of edges of the bottom surface running perpendicular to the longitudinal axis of the hinge pin. When the roll rolls on the support surface, the side walls center the roll by deflecting it towards the bottom surface.

Zusätzlich zu der oder den Abstützeinrichtung(en) kann noch eine weitere fahrgestellfeste Abstützeinrichtung vorgesehen sein, auf der das freie Ende des letzten Mastarms abgestützt ist, um die Abstützung des gesamten Masts noch weiter zu verbessern. Die weitere Abstützeinrichtung kann mit einer gleitfähigen Auflage aus verschleißfestem Kunststoff beplankt sein, ebenso wie auch die Abstützfläche aus verschleißfestem Kunststoff ausgebildet sein kann. Als Kunststoff für die Beplankung der weiteren Abstützeinrichtung, für die Abstützfläche(n) und für die Rolle(n) kommt insbesondere ein Aramid und hierbei insbesondere ein als Polyaramid 6 bezeichneter Kunststoff in Frage.In addition to the support device(s), another support device fixed to the chassis can be provided, on which the free end of the last mast arm is supported, in order to further improve the support of the entire mast. The further support device can be planked with a slidable layer made of wear-resistant plastic, just as the support surface can also be made of wear-resistant plastic. In particular, an aramid, and in particular a plastic referred to as polyaramid 6, comes into consideration as the plastic for the planking of the additional support device, for the support surface(s) and for the roller(s).

Im Folgenden wird die Erfindung anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. Es zeigt

Fig. 1
eine Detaildarstellung des Masts eines fahrbaren Pumpmischers in perspektivischer Ansicht.
The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing. It shows
1
a detailed representation of the mast of a mobile pump mixer in a perspective view.

In Fig. 1 ist ausschnittsweise ein Teil eines Pumpmischers 10 dargestellt, welcher ein nicht näher dargestelltes Fahrgestell sowie einen fahrgestellfesten, einen um eine vertikale Drehachse drehbaren Drehkopf 12 aufweisenden Mastbock 14 aufweist. Der Pumpmischer 10 weist zudem einen Mast 16 auf, der eine Betonförderleitung 18 trägt, mit der Beton mittels einer Betonpumpe zu einem Einsatzort gefördert werden kann. Der Mast 16 weist vier gelenkig miteinander verbundene Mastarme 20, 22, 24, 26 auf, wobei ein erster der Mastarme 20 um eine horizontale Schwenkachse verschwenkbar am Drehkopf 12 gelagert ist. Ein zweiter der Mastarme 22 ist mittels eines hier nicht dargestellten Gelenks verschwenkbar mit dem ersten Mastarm 20 verbunden sowie mittels eines Gelenks 28 mit einem dritten der Mastarme 24. Der dritte Mastarm 24 schließlich ist mittels eines nicht dargestellten Gelenks mit einem vierten der Mastarme 26 verbunden, welcher ein freies Ende 30 aufweist, an oder nahe dem auch die Betonförderleitung 18 endet.In 1 a part of a pump mixer 10 is shown in detail, which has a chassis (not shown in detail) and a mast bracket 14 fixed to the chassis and having a rotating head 12 rotatable about a vertical axis of rotation. The pump mixer 10 also has a mast 16 which carries a concrete delivery line 18 with which concrete can be delivered to a place of use by means of a concrete pump. The mast 16 has four mast arms 20, 22, 24, 26 which are connected to one another in an articulated manner, a first of the mast arms 20 being mounted on the rotary head 12 so as to be pivotable about a horizontal pivot axis. A second of the mast arms 22 is pivotably connected to the first mast arm 20 by means of a joint, not shown here, and to a third of the mast arms 24 by means of a joint 28. Finally, the third mast arm 24 is connected to a fourth of the mast arms 26 by means of a joint, not shown. which has a free end 30 at or near which the concrete delivery line 18 ends.

Das den zweiten Mastarm 22 mit dem dritten Mastarm 24 verbindende Gelenk 28 weist einen durch einen Hydraulikzylinder 32 beaufschlagten Umlenkhebel 34 auf, dessen Kraftbeaufschlagung durch den Hydraulikzylinder 32 eine Schwenkbewegung des dritten Mastarms 24 bezüglich des zweiten Mastarms 22 bewirkt. Identische oder ähnliche Gelenke sind ebenfalls zwischen dem ersten Mastarm 20 und dem zweiten Mastarm 22 sowie zwischen dem dritten Mastarm 24 und dem vierten Mastarm 26 angeordnet, aber in der Zeichnung nicht dargestellt. Das Gelenk 28 weist zwei im Abstand zueinander angeordnete Stegbleche 36 sowie einen die Stegbleche 36 miteinander verbindenden, drehbar durch jedes der Stegbleche 36 durchgeführten Gelenkbolzen 38 auf, der eine in seiner axialen Richtung über die Außenseite eines der Stegbleche 36 überstehende Abstützpartie 40 aufweist. Die Stegbleche 36 sind einerseits am dritten Mastarm 24 und andererseits an einer Kolbenstange 37 des Zylinders 32 angelenkt. Eine Verbindung mit dem zweiten Mastarm 22 ist durch beiderseits des zweiten Mastarms 22 an diesem sowie am Gelenkbolzen 38 angelenkte Hebel 39 gegeben.The joint 28 connecting the second boom arm 22 to the third boom arm 24 has a deflection lever 34 acted upon by a hydraulic cylinder 32, the application of force to which by the hydraulic cylinder 32 causes a pivoting movement of the third boom arm 24 with respect to the second boom arm 22. Identical or similar joints are also arranged between the first mast arm 20 and the second mast arm 22 and between the third mast arm 24 and the fourth mast arm 26, but are not shown in the drawing. The joint 28 has two web plates 36 arranged at a distance from one another and a joint pin 38 which connects the web plates 36 to one another and is rotatably guided through each of the web plates 36, which has a supporting part 40 which protrudes in its axial direction beyond the outside of one of the web plates 36. The web plates 36 are articulated on the one hand on the third mast arm 24 and on the other hand on a piston rod 37 of the cylinder 32 . A connection to the second mast arm 22 is provided by levers 39 articulated on both sides of the second mast arm 22 and on the pivot pin 38 .

Auf der Abstützpartie 40 ist eine Rolle 42 aus Kunststoff drehbar gelagert. Zur Abstützung der Mastarme 22, 24 im Bereich des Gelenks 28 ist eine bei dem gezeigten Ausführungsbeispiel fahrgestellfeste Abstützeinrichtung 44 vorgesehen, die eine nach oben gerichtete Abstützfläche 46 aufweist. Im in Fig. 1 gezeigten zusammengefalteten Zustand des Masts 14, in dem die Mastarme 20, 22, 24, 26 aufeinanderliegend oder mit nur geringem Abstand zueinander angeordnet sind, liegt die Rolle 42 auf der Abstützfläche 46 auf. Die Abstützfläche 46 wird dabei durch eine im Wesentlichen horizontal verlaufende Bodenfläche 48 sowie zwei beiderseits der Bodenfläche 48 sich in einer Richtung senkrecht zur Längsachse des Gelenkbolzens 38 erstreckende, mit der Bodenfläche 48 einen stumpfen Winkel einschließende Seitenwände 50 gebildet. Die Rinnenform der Abstützfläche 46 wirkt beim Ablegen der Rolle 42 zentrierend, so dass die Rolle 42 nicht exakt auf der Bodenfläche 48 aufsetzen muss, sondern die jeweilige Seitenwand 50 hinuntergleitet, wenn sie ein Stück weit neben der Bodenfläche 48 aufgesetzt wird. Die Abstützfläche 46 erstreckt sich zudem ein Stück weit in der Richtung senkrecht zur Längsachse des Gelenkbolzens 38, so dass die Rolle 42 ein Stück weit auf ihr abrollen kann, wenn sie auf ihr abgelegt wird.A roller 42 made of plastic is rotatably mounted on the support section 40 . To support the mast arms 22, 24 in the region of the joint 28, a support device 44 which is fixed to the chassis in the exemplary embodiment shown is provided and has a support surface 46 directed upwards. in 1 shown folded state of the mast 14, in which the mast arms 20, 22, 24, 26 are arranged one on top of the other or with only a small distance from each other, the roller 42 is on the support surface 46 on. The support surface 46 is formed by a substantially horizontally running base surface 48 and two side walls 50 on both sides of the base surface 48 extending in a direction perpendicular to the longitudinal axis of the hinge pin 38 and forming an obtuse angle with the base surface 48 . The channel shape of the support surface 46 has a centering effect when the roller 42 is set down, so that the roller 42 does not have to be placed exactly on the bottom surface 48 but rather slides down the respective side wall 50 when it is placed a little way next to the bottom surface 48 . The support surface 46 also extends a little in the direction perpendicular to the longitudinal axis of the hinge pin 38, so that the roller 42 can roll a little on it when it is placed on it.

Zum Abstützen des freien Endes 30 des vierten Mastarms 26 ist zudem eine weitere vorzugsweise fahrgestellfeste Abstützeinrichtung 52 vorgesehen, auf der ein am freien Ende 30 angeordnetes Bauteil 54 abgestützt ist.To support the free end 30 of the fourth mast arm 26, a further support device 52, preferably fixed to the chassis, is also provided, on which a component 54 arranged at the free end 30 is supported.

Zusammenfassend ist folgendes festzuhalten: Die Erfindung betrifft eine Arbeitsmaschine 10 mit einem Fahrgestell, mit einem auf dem Fahrgestell montierten, einen um eine vertikale Drehachse drehbaren Drehkopf 12 aufweisenden Mastbock 14 und mit einem mindestens zwei Mastarme 20, 22, 24, 26 aufweisenden Mast 16, wobei jeder der Mastarme 20, 22, 24 mit Ausnahme eines ein freies Ende 30 aufweisenden letzten Mastarms 26 von einem ersten Mastarm 20 ausgehend mit dem jeweils folgenden Mastarm 22, 24, 26 mittels eines Gelenks 28 verschwenkbar verbunden ist und wobei der erste Mastarm 20 um eine horizontale Schwenkachse schwenkbar am Drehkopf 12 gelagert ist. Erfindungsgemäß ist mindestens eine vorzugsweise fahrgestellfeste Abstützeinrichtung 44 vorgesehen, welche eine Abstützfläche 46 aufweist, auf der ein Bauteil des Gelenks 28 bzw. ein Bauteil eines der Gelenke 28 abgestützt ist.In summary, the following can be stated: The invention relates to a work machine 10 with a chassis, with a mast block 14 mounted on the chassis and having a rotating head 12 that can be rotated about a vertical axis of rotation, and with a mast 16 having at least two mast arms 20, 22, 24, 26, Each of the mast arms 20, 22, 24, with the exception of a last mast arm 26 having a free end 30, starting from a first mast arm 20, is pivotably connected to the respectively following mast arm 22, 24, 26 by means of a joint 28, and the first mast arm 20 is pivotable by a horizontal pivot axis is pivotally mounted on the rotary head 12. According to the invention, at least one support device 44, which is preferably fixed to the chassis, is provided, which has a support surface 46 on which a component of the joint 28 or a component of one of the joints 28 is supported.

BezugszeichenlisteReference List

1010
Pumpmischerpump mixer
1212
Dreh kopfrotary head
1414
Mastbockmast pedestal
1616
Mastmast
1818
Betonförderleitungconcrete delivery line
20, 22, 24, 2620, 22, 24, 26
Mastarmemast arms
2828
Gelenkjoint
3030
freies Endefree end
3232
Hydraulikzylinderhydraulic cylinder
3434
Umlenkhebelreversing lever
3636
Stegblechweb plate
3737
Kolbenstangepiston rod
3838
Gelenkbolzenpivot pin
3939
Hebellever
4040
Abstützpartiesupport section
4242
Rollerole
44, 5244, 52
Abstützeinrichtungsupport device
4646
Abstützflächesupport surface
4848
Bodenflächefloor space
5050
SeitenwandSide wall
5454
Bauteilcomponent

Claims (7)

  1. A work machine comprising a chassis, comprising a boom pedestal (14), which is mounted on the chassis and has a rotary head (12) rotatable about a vertical rotational axis, and comprising a boom (16) having at least two boom arms (20, 22, 24, 26), wherein each of the boom arms (20, 22, 24), with the exception of a last boom arm (26) having a free end (30), is pivotably connected, starting from a first boom arm (20), to the respectively following boom arm (22, 24, 26) by means of an articulation (28), wherein at least one, and preferably each, of the articulations (28) has a hinge bolt (38), which pivotably connects two parts of the articulation (28) one to the other and wherein the first boom arm (20) is mounted on the rotary head (12) so as to be pivotable about a horizontal pivot axis, and comprising at least one chassis-fixed supporting device (44), which has a supporting surface (46) on which a component of the articulation (28) or a component of one of the articulations (28) is supported, characterized in that the hinge bolt or hinge bolts (38) has or have a supporting section (40) which projects beyond the articulation parts connected by said hinge bolt(s), which supporting section(s) is or are supported on the relevant supporting surface (46).
  2. The work machine as claimed in claim 1, characterized by a number of supporting devices (44) corresponding to the number of articulations (28), which supporting devices respectively have a supporting surface (46), wherein one of the supporting devices (44) is assigned to each of the articulations (28), and wherein a component of the relevant articulation (28) is supported on each of the supporting surfaces (46).
  3. The work machine as claimed in claim 1 or 2, characterized in that on at least one, and preferably on each, of the supporting sections (40) there is mounted a roller (42), which is rotatable about a longitudinal axis of the hinge bolt (38) and which rests on the relevant supporting surface (46).
  4. The work machine as claimed in claim 3, characterized in that at least one, and preferably each, of the supporting surfaces (46) extends so far in a direction perpendicular to the longitudinal axis of the associated hinge bolt (38) that it projects beyond the roller (42) to both sides.
  5. The work machine as claimed in claim 3 or 4, characterized in that at least one, and preferably each of the supporting surfaces (46), is formed in the shape of a channel, having a base surface (48) and having side walls (50) extending obliquely upward to both sides of borders of the base surface (48), which borders run perpendicular to the longitudinal axis of the hinge bolt (38).
  6. The work machine as claimed in one of claims 3 to 5, characterized in that the roller(s) (42) is or are formed of plastic.
  7. The work machine as claimed in one of the preceding claims, characterized by a further supporting device (52), on which the free end (30) of the last boom arm (26) is supported.
EP15744222.9A 2014-08-12 2015-07-30 Work machine Active EP3180485B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014215946.6A DE102014215946A1 (en) 2014-08-12 2014-08-12 working machine
PCT/EP2015/067474 WO2016023759A1 (en) 2014-08-12 2015-07-30 Work machine

Publications (3)

Publication Number Publication Date
EP3180485A1 EP3180485A1 (en) 2017-06-21
EP3180485B1 EP3180485B1 (en) 2018-05-02
EP3180485B2 true EP3180485B2 (en) 2022-11-30

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US (1) US10047532B2 (en)
EP (1) EP3180485B2 (en)
JP (1) JP6691910B2 (en)
KR (1) KR102301780B1 (en)
CN (1) CN106922156B (en)
BR (1) BR112017002495A2 (en)
DE (1) DE102014215946A1 (en)
TR (1) TR201807929T4 (en)
WO (1) WO2016023759A1 (en)

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* Cited by examiner, † Cited by third party
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US11039684B2 (en) * 2018-06-06 2021-06-22 Innovative Office Products, Llc Arm-based sit-stand workstation
DE102019107315B4 (en) * 2019-03-21 2022-05-12 Schwing Gmbh big manipulator
DE102022125209A1 (en) * 2022-09-29 2024-04-04 Schwing Gmbh Grand manipulator

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JPH0337299Y2 (en) 1985-07-09 1991-08-07
JPS62140088U (en) * 1986-02-25 1987-09-03
DE4203820C5 (en) * 1992-02-10 2011-01-13 Hudelmaier, Ulrike Mobile concrete pump
JP2576756Y2 (en) * 1992-12-25 1998-07-16 株式会社加藤製作所 Self-propelled crane
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Also Published As

Publication number Publication date
US10047532B2 (en) 2018-08-14
JP6691910B2 (en) 2020-05-13
CN106922156B (en) 2019-06-28
EP3180485A1 (en) 2017-06-21
EP3180485B1 (en) 2018-05-02
KR102301780B1 (en) 2021-09-14
BR112017002495A2 (en) 2017-12-05
DE102014215946A1 (en) 2016-02-18
JP2017533356A (en) 2017-11-09
KR20170041869A (en) 2017-04-17
US20170152669A1 (en) 2017-06-01
TR201807929T4 (en) 2018-06-21
CN106922156A (en) 2017-07-04
WO2016023759A1 (en) 2016-02-18

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