EP1290292A1 - Distributor device for thick matter - Google Patents

Distributor device for thick matter

Info

Publication number
EP1290292A1
EP1290292A1 EP02706752A EP02706752A EP1290292A1 EP 1290292 A1 EP1290292 A1 EP 1290292A1 EP 02706752 A EP02706752 A EP 02706752A EP 02706752 A EP02706752 A EP 02706752A EP 1290292 A1 EP1290292 A1 EP 1290292A1
Authority
EP
European Patent Office
Prior art keywords
telescopic
distribution device
mast
fixed part
hose
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
EP02706752A
Other languages
German (de)
French (fr)
Other versions
EP1290292B1 (en
Inventor
Hartmut Benckert
Hans Renz
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 Concrete Pumps GmbH
Original Assignee
Putzmeister AG
Putzmeister Werk Maschinenfabrik 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 AG, Putzmeister Werk Maschinenfabrik GmbH filed Critical Putzmeister AG
Publication of EP1290292A1 publication Critical patent/EP1290292A1/en
Application granted granted Critical
Publication of EP1290292B1 publication Critical patent/EP1290292B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/8807—Articulated or swinging flow conduit

Definitions

  • the invention relates to a distributor device for thick materials, in particular for concrete, with a distribution mast carrying a delivery line, which has at least two mast arms pivotable about horizontal articulation axes relative to one another or to a bearing block, at least one of which can be telescoped and a fixed part and an extendable one in alignment with it Telescopic part, the delivery line in the region of the telescopic mast arm being composed of a plurality of interconnected line sections, of which a first line section is preferably rigidly connected to the fixed part, a second line section is preferably rigidly connected to the telescopic part and an adaptable to the telescopic movement of the telescopic part Intermediate section connects the first to the second line section.
  • Distribution devices of this type are mainly used for the conveying of concrete, for example for the production of concrete ceilings in building construction.
  • the delivery line is guided along the mast arms and has articulated connections that are axially parallel to them in the area of the articulated axes. In the area of the telescopic mast arm, an additional length adjustment of the delivery line is required.
  • the object of the invention is to develop a distributor device for thick materials which, with simple means, enables the length of the delivery line to be adjusted to a telescopic mast arm even with a large telescopic stroke.
  • the solution according to the invention is based on the idea that the intermediate section which can be adapted to the telescopic movement of the telescopic part is designed as a flexible hose with its ends connected to a first and second line section, which has a 180 ° bend with a constant curvature which moves parallel to the telescopic movement.
  • a hose can be easily adapted to different telescopic strokes by changing its length.
  • a preferred embodiment of the invention provides that the flexible hose can be partially supported in a support trough rigidly connected to the fixed part, the 180 ° bend protruding over the support trough and migrating with its trough-side end when telescoping along the support trough.
  • the support trough is expediently arranged at a distance from the fixed part.
  • the fixed part also has, at a distance from the support trough, a convex support link for supporting the 180 ° arc when the telescopic part is retracted.
  • the telescopic part carries near the fixed part end facing a stop link overlapping or encompassing the outlet-side end of the hose.
  • a further advantageous embodiment of the invention provides that the first line section has a parallel section which runs from the articulated joint of the fixed section essentially parallel to its longitudinal extent and an adjoining oblique section which extends obliquely to the fixed telescopic section and which is close to the support trough the latter the hose is connected with its inlet-side end aligned parallel to the support trough.
  • the second line section has a tube running from the articulated joint of the telescope part essentially parallel to the telescope axis, to which the tube is connected with its outlet-side end pointing in the direction of retraction, preferably via a 180 ° pipe elbow.
  • the base arm of the distribution boom which is articulated on a mast bracket rotatable about a vertical axis, can be telescoped.
  • a particularly advantageous application of the invention is that the placing boom is arranged on a chassis of a truck-mounted concrete pump, the delivery line being connected to the pressure outlet of a delivery pump arranged on the chassis.
  • a further preferred embodiment of the invention provides that the boom with its telescopic base arm is articulated on a mast bracket which is arranged in the vicinity of a driver's cab and can be rotated through 360 ° about a vertical axis fixed to the vehicle, and that the distance between the axis of rotation and the inclined part of the first line section corresponds at least to the distance between the axis of rotation and the front edge of the cab. This measure prevents the telescopic If the placing boom is pivoted horizontally over the driver's cab, the delivery arm may collide with the delivery line.
  • the fixed part of the telescopic base arm is advantageously longer than the downstream mast arms of the placing boom. With the measures according to the invention, it is possible for the telescopic base arm to perform a large telescopic stroke. It has proven to be particularly advantageous if the telescopic base arm is 1.6 to 3.5 times as long as the downstream mast arms when the telescopic part is extended.
  • Figure 1 is a side view of a truck-mounted concrete pump with three-axle chassis and placing boom with telescopic base arm in the folded transport position and in the unfolded and telescopic working position.
  • FIG. 2 shows a side view of a truck-mounted concrete pump with a four-axle chassis in a representation corresponding to FIG. 1.
  • the truck-mounted concrete pumps shown in the drawing comprise a chassis 10 with a driver's cab 12, a thick matter pump 14 designed, for example, as a two-cylinder piston pump, and a distributor device 16, which comprises a distribution boom 18 as a carrier for a concrete delivery line 20.
  • Liquid concrete which is continuously introduced into a feed container 22 during concreting, is conveyed via the concrete conveying line to a concreting point located away from the location of vehicle 10.
  • the distributor device 16 comprises a mast bracket 26 which can be rotated about a vehicle-mounted vertical axis 24 by means of a hydraulic rotary drive and a distributor mast 18 which can be pivoted thereon and which can be continuously adjusted to a variable range and height difference between the vehicle 10 and the concreting point.
  • the placing boom 18 consists of four articulated mast arms 30 to 36, which can be pivoted about articulation axes 38 to 44 running parallel to one another and at right angles to the axis of rotation 24 of the mast bracket 26.
  • the base arm 30, which is articulated directly on the mast bracket 26 in the region of the articulation axis 38, is additionally designed as a telescopic arm consisting of a fixed part 46 and a telescopic part 48 which can be extended in alignment with it.
  • the articulated axes 38 to 44 and the telescopic axis 68 are matched to one another such that the placing mast 28 can be placed on the chassis 10 in a space-saving transport configuration when the telescopic part 48 is retracted and the mast arms 30 to 36 are folded several times.
  • drive units 50 to 56 designed as hydraulic cylinders, which are individually assigned to the articulated axes 38 to 44, and a drive unit (not shown) for the telescopic part 48, the placing boom 18 can be deployed between the vehicle location and the concreting point.
  • a special feature of the distributor devices 16 shown in FIGS. 1 and 2 is that the delivery line 20 in the region of the telescopic mast arm 30 is composed of three interconnected line sections, of which a first line section 58 is rigid with the fixed part 46 and a second line section 60 are rigidly connected to the telescopic part 48, while an intermediate section 62 can be adapted to the telescopic movement of the telescopic part 48.
  • the intermediate section 62 is designed as a flexible, relatively rigid hose, which has an inlet-side end 64 to the outlet of the first line section 62 and an outlet-side end 66 to the inlet of the second line section. section 60 is connected.
  • the tube 62 has a 180.degree.
  • the hose 62 can be partially supported in a support trough 74 which is rigidly connected to the fixed part 46 by means of extension arm 72 and to the fixed part 46.
  • the 180 ° bend travels along the support trough with its end on the side of the trough and projects beyond the support trough with the rest.
  • the hose 62 is connected there with its outlet-side end 66 via a 180 ° pipe bend 78 to the input of the second line section 60.
  • the fixed part 46 carries a convex supporting link 80 at a distance from the support trough 74 for supporting the 180 ° bend 70.
  • first line section 58 has a longitudinal section running essentially parallel to the articulation axis 38 of the fixed part 46 and an adjoining sloping section 84 extending obliquely to the fixed telescopic part 48 up to the vicinity of the support trough 74 which the hose 62 is connected with its inlet-side end 64 aligned parallel to the support trough 74.
  • This measure ensures that a space 86 remains under the base arm 30, which allows the placing boom 30 to be rotated over the cab 12 without collision when the base arm 30 is aligned horizontally.
  • the distance between the axis of rotation 24 of the mast bracket 26 and the inclined part 84 corresponds at least to the distance between the axis of rotation 24 and the front edge 88 of the cab 12.
  • the fixed part 46 is the telescopic part Base arm 30 longer than the downstream mast arms 32 to 36.
  • the telescopic base arm when using the full telescopic stroke in the case of FIG. 1 about 1.7 times as long as the downstream mast arms.
  • the extended base arm is even 2.6 times as long as the downstream mast arms.
  • the truck-mounted concrete pumps described are particularly suitable for pulling ceilings into buildings, with the telescopic base arm 30 making a significant contribution to the fact that the distributor device 16 can be adapted from the location of the vehicle 10 to a predetermined floor height.
  • the use of a hose 62 with a 180 ° bend 70 gives the concrete pump builder a design principle that can be adapted to any telescopic lift. All he has to do is choose a sufficient hose length.
  • the invention relates to a distributor device for thick materials, in particular for concrete.
  • the distributor device 16 comprises a distributor mast 18 which carries a delivery line 20 and which has at least two mast arms 30 to 36 which can be pivoted about horizontal articulation axes 38 to 44 relative to one another or to a mast bracket 26. At least one of the mast arms, preferably the base arm 30, can be telescoped.
  • the delivery line in the area of the telescopic mast arm is composed of three interconnected line sections.
  • a first line section 58 is rigidly connected to the fixed part 46, while a second line section 60 is rigidly connected to the extendable telescopic part 48.
  • an intermediate section 62 is provided, which is connected with its ends 64, 66 to the first and the second line section 58, 60 and is designed as a flexible hose.
  • the hose has a 180 ° bend 70 which migrates during telescoping and has a constant curvature.

Landscapes

  • 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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention relates to a distributor device for thick matter, especially for concrete. The distributor device ( 16 ) comprises a concrete distributing boom ( 18 ) carrying a conveying conduit ( 20 ), which has at least two boom arms ( 30 to 36 ) that can be swiveled about horizontal articulation axes ( 38 to 44 ) relative to one another or relative to a boom support ( 26 ). At least one of the boom arms, preferably the base arm ( 30 ), is telescopically movable. In order to be adaptable to the telescoping movements, the conveying conduit is assembled from three interlinked conduit sections in the area of the telescoping boom arm. A first conduit section ( 58 ) is rigidly linked with the stationary member ( 46 ), while a second conduit section ( 60 ) is rigidly linked with the extensible telescoping member ( 48 ). The device further comprises an intermediate section ( 62 ) which is connected with its ends ( 64, 66 ) to the first and the second conduit section ( 58, 60 ) and which is configured as a flexible pipe. Said pipe has a 180° arch ( 70 ) with constant bend that travels when the boom arm telescopes.

Description

Verteilervorrichtung für DickstoffeDistribution device for thick matter
Beschreibungdescription
Die Erfindung betrifft eine Verteilervorrichtung für Dickstoffe, insbesondere für Beton, mit einem eine Förderleitung tragenden Verteilermast, der mindestens zwei um horizontale Knickachsen relativ zueinander oder zu einem Lagerbock verschwenkbare Mastarme aufweist, von denen mindestens einer teleskopierbar ist und ein Festteil sowie ein gegenüber diesem fluchtend ausfahrbares Teleskopteil aufweist, wobei die Förderleitung im Bereich des teleskopierbaren Mastarms aus mehreren miteinander verbundenen Leitungsabschnitten zusammengesetzt ist, von denen ein erster Leitungsabschnitt vorzugsweise starr mit dem Festteil, ein zweiter Leitungsabschnitt vorzugsweise starr mit dem Teleskopteil verbunden ist und ein an die Te- leskopierbewegung des Teleskopteils anpaßbarer Zwischenabschnitt den ersten mit dem zweiten Leitungsabschnitt verbindet.The invention relates to a distributor device for thick materials, in particular for concrete, with a distribution mast carrying a delivery line, which has at least two mast arms pivotable about horizontal articulation axes relative to one another or to a bearing block, at least one of which can be telescoped and a fixed part and an extendable one in alignment with it Telescopic part, the delivery line in the region of the telescopic mast arm being composed of a plurality of interconnected line sections, of which a first line section is preferably rigidly connected to the fixed part, a second line section is preferably rigidly connected to the telescopic part and an adaptable to the telescopic movement of the telescopic part Intermediate section connects the first to the second line section.
Verteilervorrichtungen dieser Art werden vor allem für die Förderung von Beton verwendet, beispielsweise zur Herstellung von Betondecken im Hoch- bau. Die Förderleitung ist entlang den Mastarmen geführt und weist im Bereich der Knickachsen zu diesen achsparallele Gelenkverbindungen auf. Im Bereich des teleskopierbaren Mastarms ist zusätzlich eine Längenanpassung der Förderleitung erforderlich.Distribution devices of this type are mainly used for the conveying of concrete, for example for the production of concrete ceilings in building construction. The delivery line is guided along the mast arms and has articulated connections that are axially parallel to them in the area of the articulated axes. In the area of the telescopic mast arm, an additional length adjustment of the delivery line is required.
Bei einer Verteilervorrichtung der eingangs angegebenen Art ist es bekannt (US-4130134), einen Verteilermast für eine Autobetonpumpe mit einem teleskopierbaren Grundarm auszustatten. Die Längenanpassung der Förderleitung erfolgt dort durch ein Scherensystem bestehend aus drei gelenkig miteinander verbundenen Leitungsabschnitten. Die Leitungsabschnitte kra- gen beim Teleskopiervorgang weit über den teleskopierbaren Mastarm seitlich über und stellen somit ein Hindernis für die Mastbewegung dar. Außer- dem sind dem Teleskophub des dortigen Teleskopaufbaus aufgrund der scherenartigen Ausbildung der Leitungsabschnitte enge Grenzen gesetzt.In a distributor device of the type specified at the outset, it is known (US-4130134) to equip a distributor mast for a truck-mounted concrete pump with a telescopic base arm. The length of the delivery line is adjusted there by a scissor system consisting of three articulated line sections. The line sections protrude laterally far beyond the telescopic mast arm during the telescopic process and thus represent an obstacle to the mast movement. This limits the telescope hub of the telescope structure there due to the scissor-like design of the line sections.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Verteiler- Vorrichtung für Dickstoffe zu entwickeln, die mit einfachen Mitteln auch bei einem großen Teleskophub eine Längenanpassung der Förderleitung an einen teleskopierbaren Mastarm ermöglicht.Proceeding from this, the object of the invention is to develop a distributor device for thick materials which, with simple means, enables the length of the delivery line to be adjusted to a telescopic mast arm even with a large telescopic stroke.
Zur Lösung dieser Aufgabe wird die im Patentanspruch 1 angegebene Merkmalskombination vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.To achieve this object, the combination of features specified in claim 1 is proposed. Advantageous refinements and developments of the invention result from the subclaims.
Der erfindungsgemäßen Lösung liegt der Gedanke zugrunde, daß der an die Teleskopierbewegung des Teleskopteils anpaßbare Zwischenabschnitt als mit seinen Enden an einen ersten und zweiten Leitungsabschnitt angeschlossener biegsamer Schlauch ausgebildet ist, der einen parallel zur Teleskopbewegung wandernden 180°-Bogen mit konstanter Krümmung aufweist. Ein derartiger Schlauch kann durch Veränderung seiner Länge einfach an unterschiedliche Teleskophübe angepaßt werden.The solution according to the invention is based on the idea that the intermediate section which can be adapted to the telescopic movement of the telescopic part is designed as a flexible hose with its ends connected to a first and second line section, which has a 180 ° bend with a constant curvature which moves parallel to the telescopic movement. Such a hose can be easily adapted to different telescopic strokes by changing its length.
Eine bevorzugte Ausgestaltung der Erfindung sieht vor, daß der biegsame Schlauch in einer mit dem Festteil starr verbundenen Stützwanne partiell abstützbar ist, wobei der 180°-Bogen über die Stützwanne übersteht und mit seinem wannenseitigen Ende beim Teleskopieren entlang der Stützwanne wandert. Die Stützwanne ist zweckmäßig im Abstand von dem Festteil angeordnet. Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung weist das Festteil außerdem im Abstand von der Stützwanne eine konvexe Stützkulisse zur Abstützung des 180°-Bogens im eingefahrenen Zustand des Teleskopteils auf. Zur weiteren Verbesserung der Schlauchführung während des Teleskopierens trägt das Teleskopteil in der Nähe seines dem Festteil zugewandten Endes eine das austrittsseitige Ende des Schlauchs übergreifende oder umgreifende Anschlagkulisse.A preferred embodiment of the invention provides that the flexible hose can be partially supported in a support trough rigidly connected to the fixed part, the 180 ° bend protruding over the support trough and migrating with its trough-side end when telescoping along the support trough. The support trough is expediently arranged at a distance from the fixed part. According to a further advantageous embodiment of the invention, the fixed part also has, at a distance from the support trough, a convex support link for supporting the 180 ° arc when the telescopic part is retracted. To further improve the hose routing during telescoping, the telescopic part carries near the fixed part end facing a stop link overlapping or encompassing the outlet-side end of the hose.
Eine weitere vorteilhafte Ausgestaltung der Erfindung sieht vor, daß der ers- te Leitungsabschnitt eine vom Knickgelenk des Festteils aus im wesentlichen parallel zu dessen Längserstreckung verlaufende Parallelpartie und eine daran anschließende, schräg zum feststehenden Teleskopteil bis in die Nähe der Stützwanne verlaufende Schrägpartie aufweist, an welch letztere der Schlauch mit seinem parallel zur Stützwanne ausgerichteten eintrittsseitigen Ende angeschlossen ist. Weiter wird gemäß der Erfindung vorgeschlagen, daß der zweite Leitungsabschnitt ein vom Knickgelenk des Teleskopteils aus im wesentlichen parallel zur Teleskopachse verlaufendes Rohr aufweist, an das der Schlauch mit seinem in Einfahrrichtung weisenden austrittsseitigen Ende vorzugsweise über einen 180°-Rohrkrümmer angeschlossen ist.A further advantageous embodiment of the invention provides that the first line section has a parallel section which runs from the articulated joint of the fixed section essentially parallel to its longitudinal extent and an adjoining oblique section which extends obliquely to the fixed telescopic section and which is close to the support trough the latter the hose is connected with its inlet-side end aligned parallel to the support trough. It is further proposed according to the invention that the second line section has a tube running from the articulated joint of the telescope part essentially parallel to the telescope axis, to which the tube is connected with its outlet-side end pointing in the direction of retraction, preferably via a 180 ° pipe elbow.
Besonders vorteilhaft ist es, wenn der an einem um eine vertikale Achse drehbare Mastbock angelenkte Grundarm des Verteilermasts teleskopierbar ist.It is particularly advantageous if the base arm of the distribution boom, which is articulated on a mast bracket rotatable about a vertical axis, can be telescoped.
Ein besonders vorteihafter Anwendungsfall der Erfindung besteht darin, daß der Verteilermast auf einem Fahrgestell einer Autobetonpumpe angeordnet ist, wobei die Förderleitung an den Druckausgang einer auf dem Fahrgestell angeordneten Förderpumpe angeschlossen ist.A particularly advantageous application of the invention is that the placing boom is arranged on a chassis of a truck-mounted concrete pump, the delivery line being connected to the pressure outlet of a delivery pump arranged on the chassis.
Eine weitere bevorzugte Ausgestaltung der Erfindung sieht vor, daß der Verteilermast mit seinem teleskopierbaren Grundarm an einem in der Nähe eines Fahrerhauses angeordneten, um eine fahrzeugfeste Hochachse um 360° drehbaren Mastbock angelenkt ist, und daß der Abstand zwischen der Drehachse und der Schrägpartie des ersten Leitungsabschnitts mindestens dem Abstand zwischen der Drehachse und der Vorderkante des Fahrerhauses entspricht. Mit dieser Maßnahme wird vermieden, daß es beim Telesko- pieren des Grundarms bei über das Fahrerhaus horizontal ausgeschwenktem Verteilermast zu Kollisionen der Förderleitung mit dem Fahrerhaus kommen kann.A further preferred embodiment of the invention provides that the boom with its telescopic base arm is articulated on a mast bracket which is arranged in the vicinity of a driver's cab and can be rotated through 360 ° about a vertical axis fixed to the vehicle, and that the distance between the axis of rotation and the inclined part of the first line section corresponds at least to the distance between the axis of rotation and the front edge of the cab. This measure prevents the telescopic If the placing boom is pivoted horizontally over the driver's cab, the delivery arm may collide with the delivery line.
Der Festteil des teleskopierbaren Grundarms ist vorteilhafterweise länger als die nachgeordneten Mastarme des Verteilermasts. Mit den erfindungsgemäßen Maßnahmen ist es möglich, daß der teleskopierbare Grundarm einen großen Teleskophub ausführt. Als besonders vorteilhaft hat es sich erwiesen, wenn der teleskopierbare Grundarm im ausgefahrenen Zustand des Teleskopteils 1 ,6 bis 3,5 mal so lang ist wie die nachgeordneten Mastarme.The fixed part of the telescopic base arm is advantageously longer than the downstream mast arms of the placing boom. With the measures according to the invention, it is possible for the telescopic base arm to perform a large telescopic stroke. It has proven to be particularly advantageous if the telescopic base arm is 1.6 to 3.5 times as long as the downstream mast arms when the telescopic part is extended.
Im folgenden wird die Erfindung anhand der Zeichnung näher erläutert. Es zeigenThe invention is explained in more detail below with reference to the drawing. Show it
Fig. 1 eine Seitenansicht einer Autobetonpumpe mit dreiachsigem Fahrgestell und Verteilermast mit teleskopierbarem Grundarm in eingefalteter Transportstellung und in ausgefalteter und teleskopierter Arbeitsstellung;Figure 1 is a side view of a truck-mounted concrete pump with three-axle chassis and placing boom with telescopic base arm in the folded transport position and in the unfolded and telescopic working position.
Fig. 2 eine Seitenansicht einer Autobetonpumpe mit vierachsigem Fahrgestell in einer Darstellung entsprechend Fig. 1.FIG. 2 shows a side view of a truck-mounted concrete pump with a four-axle chassis in a representation corresponding to FIG. 1.
Die in der Zeichnung dargestellten Autobetonpumpen umfassen ein Fahrgestell 10 mit einem Fahrerhaus 12, eine z.B. als Zweizylinderkolbenpumpe ausgebildete Dickstoffpumpe 14 sowie einer Verteilervorrichtung 16, die einen Verteilermast 18 als Träger für eine Betonförderleitung 20 umfaßt. Über die Betonförderleitung wird Flüssigbeton, der in einen Aufgabebehälter 22 während des Betonierens fortlaufend eingebracht wird, zu einer vom Standort des Fahrzeugs 10 entfernt angeordneten Betonierstelle gefördert. Die Verteilervorrichtung 16 umfaßt einen mittels eines hydraulischen Drehantriebs um eine fahrzeugfeste Hochachse 24 drehbaren Mastbock 26 und einen an diesem schwenkbaren Verteilermast 18, der auf variable Reichweite und Höhendifferenz zwischen dem Fahrzeug 10 und der Betonierstelle kon- tinuierlich einstellbar ist. Der Verteilermast 18 besteht bei den dargestellten Ausführungsbeispielen aus vier gelenkig miteinander verbundenen Mastarmen 30 bis 36, die um parallel zueinander und rechtwinklig zur Drehachse 24 des Mastbocks 26 verlaufende Knickachsen 38 bis 44 schwenkbar sind. Der unmittelbar an dem Mastbock 26 im Bereich der Knickachse 38 ange- lenkte Grundarm 30 ist zusätzlich als Teleskoparm bestehend aus einem Festteil 46 und einem gegenüber diesem fluchtend ausfahrbaren Teleskopteil 48 ausgebildet. Die Knickachsen 38 bis 44 und die Teleskopachse 68 sind so aufeinander abgestimmt, daß der Verteilermast 28 bei eingefahrenem Teleskopteil 48 und mehrfacher Faltung der Mastarme 30 bis 36 in ei- ner raumsparenden Transportkonfiguration auf dem Fahrgestell 10 ablegbar ist. Durch eine Aktivierung von als Hydrozylinder ausgebildeten Antriebsaggregaten 50 bis 56, die den Knickachsen 38 bis 44 einzeln zugeordnet sind, sowie eines nicht dargestellten Antriebsaggregats für das Teleskopteil 48 ist der Verteilermast 18 zwischen dem Fahrzeugstandort und der Betonierstelle entfaltbar.The truck-mounted concrete pumps shown in the drawing comprise a chassis 10 with a driver's cab 12, a thick matter pump 14 designed, for example, as a two-cylinder piston pump, and a distributor device 16, which comprises a distribution boom 18 as a carrier for a concrete delivery line 20. Liquid concrete, which is continuously introduced into a feed container 22 during concreting, is conveyed via the concrete conveying line to a concreting point located away from the location of vehicle 10. The distributor device 16 comprises a mast bracket 26 which can be rotated about a vehicle-mounted vertical axis 24 by means of a hydraulic rotary drive and a distributor mast 18 which can be pivoted thereon and which can be continuously adjusted to a variable range and height difference between the vehicle 10 and the concreting point. In the exemplary embodiments shown, the placing boom 18 consists of four articulated mast arms 30 to 36, which can be pivoted about articulation axes 38 to 44 running parallel to one another and at right angles to the axis of rotation 24 of the mast bracket 26. The base arm 30, which is articulated directly on the mast bracket 26 in the region of the articulation axis 38, is additionally designed as a telescopic arm consisting of a fixed part 46 and a telescopic part 48 which can be extended in alignment with it. The articulated axes 38 to 44 and the telescopic axis 68 are matched to one another such that the placing mast 28 can be placed on the chassis 10 in a space-saving transport configuration when the telescopic part 48 is retracted and the mast arms 30 to 36 are folded several times. By activating drive units 50 to 56 designed as hydraulic cylinders, which are individually assigned to the articulated axes 38 to 44, and a drive unit (not shown) for the telescopic part 48, the placing boom 18 can be deployed between the vehicle location and the concreting point.
Eine Besonderheit der in Fig. 1 und 2 dargestellten Verteilervorrichtungen 16 besteht darin, daß die Förderleitung 20 im Bereich des teleskopierenden Mastarms 30 aus drei miteinander verbundenen Leitungsabschnitten zu- sammengesetzt ist, von denen ein erster Leitungsabschnitt 58 starr mit dem Festteil 46 und ein zweiter Leitungsabschnitt 60 starr mit dem Teleskopteil 48 verbunden sind, während ein Zwischenabschnitt 62 an die Teleskopierbewegung des Teleskopteils 48 anpaßbar ist. Der Zwischenabschnitt 62 ist als biegsamer, relativ steifer Schlauch ausgebildet, der mit seinem eintritts- seitigen Ende 64 an den Ausgang des ersten Leitungsabschnitts 62 und mit seinem austrittsseitigen Ende 66 an den Eingang des zweiten Leitungsab- schnitts 60 angeschlossen ist. Der Schlauch 62 weist einen beim Teleskopie- ren parallel zur Teleskopachse 68 wandernden 180°-Bogen 70 mit konstanter Krümmung auf. Um beim Teleskopieren eine konstante Krümmung des 180°-Bogens einhalten zu können, ist der Schlauch 62 in einer mit dem Fest- teil 46 über Ausleger 72 mit dem Festteil 46 starr verbundenen Stützwanne 74 partiell abstützbar. Beim Teleskopieren wandert der 180°-Bogen mit seinem wannenseitigen Ende entlang der Stützwanne und steht mit dem Rest über die Stützwanne über. Auf der Seite des ausfahrbaren Teleskopteils 48 ist zusätzlich eine das austrittsseitige Ende 66 des Schlauchs 62 übergrei- fende oder umgreifende Anschlagkulisse 76 vorgesehen. Der Schlauch 62 ist dort mit seinem austrittsseitigen Ende 66 über einen 180°-Rohrkrümmer 78 an den Eingang des zweiten Leitungsabschnitts 60 angeschlossen. Zur Stabilisierung des Schlauchs 62 in der Endstellung des ausfahrbaren Teleskopteils 48 trägt das Festteil 46 im Abstand von der Stützwanne 74 eine konvexe Stützkulisse 80 zur Abstützung des 180°-Bogens 70.A special feature of the distributor devices 16 shown in FIGS. 1 and 2 is that the delivery line 20 in the region of the telescopic mast arm 30 is composed of three interconnected line sections, of which a first line section 58 is rigid with the fixed part 46 and a second line section 60 are rigidly connected to the telescopic part 48, while an intermediate section 62 can be adapted to the telescopic movement of the telescopic part 48. The intermediate section 62 is designed as a flexible, relatively rigid hose, which has an inlet-side end 64 to the outlet of the first line section 62 and an outlet-side end 66 to the inlet of the second line section. section 60 is connected. The tube 62 has a 180.degree. Bend 70 with a constant curvature that moves parallel to the telescopic axis 68 during telescoping. In order to be able to maintain a constant curvature of the 180 ° arc when telescoping, the hose 62 can be partially supported in a support trough 74 which is rigidly connected to the fixed part 46 by means of extension arm 72 and to the fixed part 46. When telescoping, the 180 ° bend travels along the support trough with its end on the side of the trough and projects beyond the support trough with the rest. On the side of the extendable telescopic part 48 there is additionally provided a stop link 76 which extends over or extends around the outlet-side end 66 of the hose 62. The hose 62 is connected there with its outlet-side end 66 via a 180 ° pipe bend 78 to the input of the second line section 60. To stabilize the hose 62 in the end position of the extendable telescopic part 48, the fixed part 46 carries a convex supporting link 80 at a distance from the support trough 74 for supporting the 180 ° bend 70.
Eine weitere Besonderheit besteht darin, daß der erste Leitungsabschnitt 58 eine von der Knickachse 38 des Festteils 46 aus im wesentlichen parallel zu diesem verlaufende Längspartie und eine daran anschließende, schräg zum feststehenden Teleskopteil 48 bis in die Nähe der Stützwanne 74 verlaufende Schrägpartie 84 aufweist, an die der Schlauch 62 mit seinem parallel zur Stützwanne 74 ausgerichteten eintrittsseitigen Ende 64 angeschlossen ist. Mit dieser Maßnahme wird erreicht, daß unter dem Grundarm 30 ein Freiraum 86 verbleibt, der es erlaubt, den Verteilermast bei horizontal ausgeri- chetetem Grundarm 30 kollisionsfrei über das Fahrerhaus 12 zu verdrehen. Zu diesem Zweck entspricht der Abstand zwischen der Drehachse 24 des Mastbocks 26 und der Schrägpartie 84 mindestens dem Abstand zwischen der Drehachse 24 und der Vorderkante 88 des Fahrerhauses 12. Bei den in den Fig. 1 und 2 gezeigten Ausführungsbeispielen ist der feststehende Teil 46 des teleskopierbaren Grundarms 30 länger als die nachgeordneten Mastarme 32 bis 36. Im ausgefahrenen Zustand ist der teleskopierbare Grundarm bei Ausnutzung des vollen Teleskophubs im Falle der Fig. 1 etwa 1,7 mal so lang wie die nachgeordneten Mastarme. Im Falle der Fig. 2 ist der ausgefahrene Grundarm sogar 2,6 mal so lang wie die nachgeordneten Mastarme.A further peculiarity is that the first line section 58 has a longitudinal section running essentially parallel to the articulation axis 38 of the fixed part 46 and an adjoining sloping section 84 extending obliquely to the fixed telescopic part 48 up to the vicinity of the support trough 74 which the hose 62 is connected with its inlet-side end 64 aligned parallel to the support trough 74. This measure ensures that a space 86 remains under the base arm 30, which allows the placing boom 30 to be rotated over the cab 12 without collision when the base arm 30 is aligned horizontally. For this purpose, the distance between the axis of rotation 24 of the mast bracket 26 and the inclined part 84 corresponds at least to the distance between the axis of rotation 24 and the front edge 88 of the cab 12. In the exemplary embodiments shown in FIGS. 1 and 2, the fixed part 46 is the telescopic part Base arm 30 longer than the downstream mast arms 32 to 36. When extended, the telescopic base arm when using the full telescopic stroke in the case of FIG. 1 about 1.7 times as long as the downstream mast arms. In the case of FIG. 2, the extended base arm is even 2.6 times as long as the downstream mast arms.
Die beschriebenen Autobetonpumpen eignen sich vor allem zum Einziehen von Decken in Hochbauten, wobei der teleskopierbare Grundarm 30 wesentlich dazu beiträgt, daß die Verteilervorrichtung 16 vom Standort des Fahrzeugs 10 aus an eine vorgegebene Stockwerkshöhe anpaßbar ist. Durch die Verwendung eines Schlauchs 62 mit 180°-Bogen 70 ist dem Betonpumpen- bauer ein Konstruktionsprinzip an die Hand gegeben, das an beliebige Teleskophübe anpaßbar ist. Er muß dazu lediglich eine ausreichende Schlauchlänge wählen.The truck-mounted concrete pumps described are particularly suitable for pulling ceilings into buildings, with the telescopic base arm 30 making a significant contribution to the fact that the distributor device 16 can be adapted from the location of the vehicle 10 to a predetermined floor height. The use of a hose 62 with a 180 ° bend 70 gives the concrete pump builder a design principle that can be adapted to any telescopic lift. All he has to do is choose a sufficient hose length.
Zusammenfassend ist folgendes festzuhalten: Die Erfindung bezieht sich auf eine Verteilervorrichtung für Dickstoffe, insbesondere für Beton. Die Verteilervorrichtung 16 umfaßt einen eine Förderleitung 20 tragenden Verteilermast 18, der mindestens zwei um horizontale Knickachsen 38 bis 44 relativ zueinander oder zu einem Mastbock 26 verschwenkbare Mastarme 30 bis 36 aufweist. Mindestens einer der Mastarme, vorzugsweise der Grundarm 30, ist dabei teleskopierbar. Um an die Teleskopierbewegung angepaßt werden zu können, ist die Förderleitung im Bereich des teleskopierenden Mastarms aus drei miteinander verbundenen Leitungsabschnitten zusammengesetzt. Ein erster Leitungsabschnitt 58 ist dabei starr mit dem Festteil 46 verbunden, während ein zweiter Leitungsabschnitt 60 starr mit dem ausfahrbaren Tele- skopteil 48 verbunden ist. Weiter ist ein Zwischenabschnitt 62 vorgesehen, der mit seinen Enden 64,66 an den ersten und den zweiten Leitungsabschnitt 58,60 angeschlossen und als biegsamer Schlauch ausgebildet ist. Der Schlauch weist erfindungsgemäß einen beim Teleskopieren wandernden 180°-Bogen 70 mit konstanter Krümmung auf. In summary, the following can be stated: The invention relates to a distributor device for thick materials, in particular for concrete. The distributor device 16 comprises a distributor mast 18 which carries a delivery line 20 and which has at least two mast arms 30 to 36 which can be pivoted about horizontal articulation axes 38 to 44 relative to one another or to a mast bracket 26. At least one of the mast arms, preferably the base arm 30, can be telescoped. In order to be able to be adapted to the telescopic movement, the delivery line in the area of the telescopic mast arm is composed of three interconnected line sections. A first line section 58 is rigidly connected to the fixed part 46, while a second line section 60 is rigidly connected to the extendable telescopic part 48. Furthermore, an intermediate section 62 is provided, which is connected with its ends 64, 66 to the first and the second line section 58, 60 and is designed as a flexible hose. According to the invention, the hose has a 180 ° bend 70 which migrates during telescoping and has a constant curvature.

Claims

Patentansprüche claims
1. Verteilervorrichtung für Dickstoffe, insbesondere für Beton, mit einem eine Förderleitung tragenden Verteilermast (18), der mindestens zwei um horizontale Knickachsen (38 bis 44) relativ zueinander oder zu einem Mastbock (26) verschwenkbare Mastarme (30 bis 36) aufweist, von denen mindestens einer (30) teleskopierbar ist und ein Festteil (46) und ein gegenüber diesem fluchtend ausfahrbares Teleskopteil (48) aufweist, wobei die Förderleitung (20) im Bereich des teleskopierenden Mastarms (30) aus mehreren miteinander verbundenen Leitungsabschnitten (58 bis 62) zusammengesetzt ist, von denen ein erster Leitungsabschnitt (58) vorzugsweise starr mit dem Festteil (46), ein zweiter Leitungsabschnitt (60) vorzugsweise starr mit dem ausfahrbaren Teleskopteil (48) verbunden ist und ein an die Teleskopierbewegung des Teleskopteils (46,48) anpaßbarer Zwischenabschnitt (62) den ersten mit dem zweiten Leitungsabschnitt verbindet, dadurch gekennzeichnet, daß der Zwischenabschnitt (62) als biegsamer Schlauch ausgebildet ist, der einen parallel zur Teleskopbewegung wandernden 180°- Bogen mit konstanter Krümmung aufweist.1. Distribution device for thick materials, in particular for concrete, with a distribution boom (18) carrying a delivery line, which has at least two horizontal arms (30 to 36) pivotable about horizontal articulation axes (38 to 44) relative to one another or to a mast bracket (26) of which at least one (30) is telescopic and has a fixed part (46) and a telescopic part (48) which can be extended in alignment with it, the delivery line (20) in the region of the telescopic mast arm (30) comprising a plurality of interconnected line sections (58 to 62) is composed, of which a first line section (58) is preferably rigidly connected to the fixed part (46), a second line section (60) is preferably rigidly connected to the extendable telescopic part (48) and one which is adaptable to the telescopic movement of the telescopic part (46, 48) Intermediate section (62) connects the first to the second line section, characterized in that the intermediate section (62) as b flexible hose is formed, which has a 180 ° bend with a constant curvature that moves parallel to the telescopic movement.
2. Verteilervorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Schlauch (62) in einer mit dem Festteil (46) starr verbundenen Stützwanne (74) partiell abstützbar ist.2. Distribution device according to claim 1, characterized in that the hose (62) in a rigidly connected to the fixed part (46) supporting trough (74) is partially supported.
3. Verteilervorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Schlauch (62) mit seinem 180°-Bogen (70) über die Stützwanne (74) übersteht.3. Distribution device according to claim 2, characterized in that the hose (62) with its 180 ° bend (70) over the support trough (74).
4. Verteilervorrichtung nach Anspruch 2 oder 3, dadurch gekennzeich- net, daß der 180°-Bogen (70) mit seinem wannenseitigen Ende beim4. Distribution device according to claim 2 or 3, characterized in that the 180 ° bend (70) with its tub-side end at
Teleskopieren entlang der Stützwanne (74) wandert. Telescoping moves along the support trough (74).
5. Verteilervorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Stützwanne (74) im Abstand von dem Festteil (46) angeordnet ist.5. Distribution device according to one of claims 2 to 4, characterized in that the support trough (74) is arranged at a distance from the fixed part (46).
6. Verteilervorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß das Festteil (46) im Abstand von der Stützwanne (74) eine konvexe Stützkulisse zur Abstützung des 180°-Bogens im eingefahrenen Zustand des ausfahrbaren Teleskopteils (48) aufweist.6. Distribution device according to one of claims 2 to 5, characterized in that the fixed part (46) at a distance from the support trough (74) has a convex support link for supporting the 180 ° arc in the retracted state of the extendable telescopic part (48).
7. Verteilervorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der erste Leitungsabschnitt (58) eine vom Knickgelenk (38) des Festteils (46) aus im wesentlichen parallel zu dessen Längserstreckung verlaufende Längspartie (82) und eine daran an- schließende, schräg zum Festteil (46) bis in die Nähe der Stützwanne7. Distributor device according to one of claims 1 to 6, characterized in that the first line section (58) from the articulated joint (38) of the fixed part (46) from substantially parallel to the longitudinal extension of the longitudinal part (82) and an adjoining , diagonally to the fixed part (46) up to the vicinity of the support trough
(74) verlaufende Schrägpartie (84) aufweist, an die der Schlauch (62) mit seinem parallel zur Stützwanne (74) ausgerichteten eintrittsseitigen Ende (64) angeschlossen ist.(74) has an inclined section (84) to which the hose (62) is connected with its inlet end (64) oriented parallel to the support trough (74).
8. Verteilervorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der zweite Leitungsabschnitt (60) eine vom Knickgelenk (40) des ausfahrbaren Teleskopteils (48) aus im wesentlichen parallel zur Teleskopachse (68) verlaufendes Rohr aufweist, an das der Schlauch (62) mit seinem in Einfahrrichtung weisenden austrittsseitigen Ende (66) vorzugsweise über einen 180°-Rohrkrümmer (78) angeschlossen ist.8. Distribution device according to one of claims 1 to 7, characterized in that the second line section (60) from the articulated joint (40) of the extendable telescopic part (48) from substantially parallel to the telescopic axis (68) extending tube to which the hose (62) with its outlet-side end (66) pointing in the direction of entry is preferably connected via a 180 ° pipe elbow (78).
9. Verteilervorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das ausfahrbare Teleskopteil (48) in der Nähe sei- nes dem Festteil (46) zugewandten Endes eine das austrittsseitige En- de (66) des Schlauchs übergreifende oder umgreifende Anschlagkulisse (76) trägt.9. Distribution device according to one of claims 1 to 8, characterized in that the extendable telescopic part (48) near its end facing the fixed part (46) has an end on the exit side. de (66) of the hose overlapping or encompassing stop link (76).
10. Verteilervorrichtung nach einem der Ansprüche 1 bis 9, dadurch ge- kennzeichnet, daß der an einem um eine fahrzeugfeste Hochachse10. Distribution device according to one of claims 1 to 9, character- ized in that the on a vehicle-fixed vertical axis
(24) drehbare Mastbock (26) angelenkte Grundarm (30) des Verteiler- masts (28) teleskopierbar ausgebildet ist.(24) rotatable mast bracket (26) articulated base arm (30) of the distributor mast (28) is designed to be telescopic.
11. Verteilervorrichtung nach einem der Ansprüche 1 bis 10, dadurch ge- kennzeichnet, daß der Verteilermast (18) auf einem Fahrgestell (10) einer Autobetonpumpe angeordnet ist, wobei die Förderleitung (20) an den Druckausgang einer auf dem Fahrgestell (10) angeordneten Förderpumpe (14) angeschlossen ist.11. Distribution device according to one of claims 1 to 10, characterized in that the distribution mast (18) is arranged on a chassis (10) of a truck-mounted concrete pump, the delivery line (20) being arranged at the pressure outlet on the chassis (10) Feed pump (14) is connected.
12. Verteilervorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der Verteilermast (18) mit seinem als Teleskoparm ausgebildeten Grundarm (30) auf einem in der Nähe eines Fahrerhauses (12) angeordneten, um eine fahrgestellfeste Hochachse (24) um 360° drehbaren Mastbock (26) angelenkt ist, und daß der Abstand zwischen der Dreh- achse (24) des Mastbocks (26) und der Schrägpartie (84) des ersten12. Distribution device according to claim 11, characterized in that the distribution boom (18) with its base arm designed as a telescopic arm (30) on a near a cab (12) arranged around a chassis-fixed vertical axis (24) through 360 ° rotatable mast bracket ( 26) is articulated, and that the distance between the axis of rotation (24) of the mast bracket (26) and the inclined section (84) of the first
Leitungsabschnitts (58) mindestens dem Abstand zwischen der Drehachse (24) und der Vorderkante (88) des Fahrerhauses (12) entspricht.Line section (58) corresponds at least to the distance between the axis of rotation (24) and the front edge (88) of the driver's cab (12).
13. Verteilervorrichtung nach einem der Ansprüche 1 bis 12, dadurch ge- kennzeichnet, daß der Festteil (46) des teleskopierbaren Grundarms13. Distribution device according to one of claims 1 to 12, characterized in that the fixed part (46) of the telescopic base arm
(30) länger ist als die nachgeordneten Mastarme (32 bis 36) des Vertei- lermasts (18).(30) is longer than the downstream mast arms (32 to 36) of the distributor mast (18).
14. Verteilervorrichtung nach einem der Ansprüche 1 bis 13, dadurch ge- kennzeichnet, daß der teleskopierbare Grundarm (30) in ausgefahre- nem Zustand 1,6 bis 3,5 mal so lang ist wie die nachgeordneten Mastarme (32 bis 36). 14. Distribution device according to one of claims 1 to 13, characterized in that the telescopic base arm (30) in extended state is 1.6 to 3.5 times as long as the downstream mast arms (32 to 36).
EP02706752A 2001-03-12 2002-02-28 Distributor device for thick matter Expired - Lifetime EP1290292B1 (en)

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DE10112086A DE10112086A1 (en) 2001-03-12 2001-03-12 Distribution device for thick matter
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PCT/EP2002/002161 WO2002072978A1 (en) 2001-03-12 2002-02-28 Distributor device for thick matter

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ES2214469T3 (en) 2004-09-16
US20040148814A1 (en) 2004-08-05
DE10112086A1 (en) 2002-09-26
TR200400738T4 (en) 2004-07-21
ATE260394T1 (en) 2004-03-15
WO2002072978A1 (en) 2002-09-19
DE50200253D1 (en) 2004-04-01

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