EP0835971A1 - Concrete distributing system for pumped concrete - Google Patents

Concrete distributing system for pumped concrete Download PDF

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Publication number
EP0835971A1
EP0835971A1 EP19970117208 EP97117208A EP0835971A1 EP 0835971 A1 EP0835971 A1 EP 0835971A1 EP 19970117208 EP19970117208 EP 19970117208 EP 97117208 A EP97117208 A EP 97117208A EP 0835971 A1 EP0835971 A1 EP 0835971A1
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EP
European Patent Office
Prior art keywords
concrete
ready
distribution system
pipe
mast
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.)
Withdrawn
Application number
EP19970117208
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German (de)
French (fr)
Inventor
Ernst Dipl.-Ing. Korthaus
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0835971A1 publication Critical patent/EP0835971A1/en
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4259—With separate material addition
    • 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 concrete distribution system for ready-mixed concrete, consisting of a concrete delivery pipeline consisting of several pipe sections and a pipeline supporting mast made of several supporting mast pieces.
  • the concrete delivery pipeline is connected to a stationary or to a mobile concrete pump, the concrete is fed.
  • this is ready-mixed concrete.
  • Concrete distribution systems for ready-mixed concrete are known in which the concrete delivery pipeline consists of several pipe sections which are foldably attached to the foldable pipeline mast so that both can be unfolded like a folding rule.
  • the pipeline is routed through the articulated joints of the mast, each with two 90 ° deflections. These deflections cause undesirable recoil in the conveying process and thus increased stress on the support mast construction.
  • a free working space with a minimum height corresponding to the length of the pipe section is required for such concrete distribution systems to extend the concrete delivery pipeline in the operating position. Since there is often no corresponding free work space, the use of known concrete distribution systems is restricted.
  • the invention has for its object to expand the possible uses of a concrete distribution system for ready-mixed concrete and to avoid increased loads on the mast structure.
  • the task is solved by means of the design of the concrete distribution system according to the characterizing part of the main claim.
  • Advantageous embodiments of the invention are achieved by the characterizing features of the subclaims.
  • the inventive design of the concrete distribution system in connection with a concrete pump has the advantage of being used on construction sites with a limited free working height, such as tunnels, halls and similar structures.
  • the support and turntable 2 for the pipeline support mast 3 is fastened to the support mast pieces 4, 5.
  • the mast section 5 can be telescopically extended and retracted relative to the mast section 4.
  • the sliding elements used for this purpose of a known type are not the subject of the invention.
  • the pipe section 6 of the concrete conveying pipeline is fastened to the supporting mast piece 4 on the feed side and is connected to the concrete conveying pump via the supporting and rotating bolster 2.
  • this tube section 6 has the piston 7, which slides within the tube section 8 when it is retracted and extended.
  • the pipe section 8 encloses the pipe section 6, is fastened once to the supporting mast piece 5 and can slide over the sealing head 9 on the pipe section 6.
  • the piston 7 is formed at the end of the tube section 6 as a rubber piston and rigidly connected.
  • the ring-shaped remains between tube section 6 and tube section 8 Rinse chamber 10, which has a different length depending on the operating state of the concrete delivery pipeline having.
  • the sealing head 9 is arranged, this pipe section seals against the first pipe section 6 and the inlet and outlet for the wash cabinet 10 forms.
  • the seal 12 can be of a conventional type with known sealing elements respectively.
  • the sealing head 9 is advantageously provided with two connections 11 for the inflow or outflow of detergent Mistake.
  • the detergent usually water, with or without special additives, comes from a water tank, not shown, and flows back into it. Before the return flow into the tank, a filter with sand filling is provided, which retains cement particles from the annular wash chamber 10. This protects the circulation pump from wear.
  • the detergent is circulated by a pump, which is usually located in the water tank.

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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)
  • Reciprocating Pumps (AREA)

Abstract

The concrete pump is fitted with a telescopic support mast (4,5) mounted on the pump via a swivel mounting (2,3). The mast carries a telescopic pipe (6,8) on the underside to deliver the concrete where required. The pipe sections have rubber seals (7,9) to prevent concrete fouling the trapped volumes in the pipe sections. The trapped volumes can be connected to a water flushing system. The return flow water is filtered to remove sand and cement particles before being returned to the tank. The telescopic pipe provides a straight line delivery with a minimum of headroom required.

Description

Die Erfindung betrifft ein Betonverteilersystem für Transportbeton, bestehend aus einer Betonförderrohrleitung aus mehreren Rohrsektionen und einem Rohrleitungs-Tragmast aus mehreren Tragmaststücken. Die Betonförderrohrleitung ist an eine stationäre oder an eine mobile Betonpumpe angeschlossen, der Beton aufgegeben wird. In der Regel ist dies Transportbeton.
Für ein Betonverteilersystem der genannten Art ist es erforderlich, es so auszubilden, daß sein Einsatz auch auf Baustellen mit begrenzter freier Arbeitshöhe möglich ist.
Es sind Betonverteilersysteme für Transportbeton bekannt, bei denen die Betonförderrohrleitung aus mehreren Rohrsektionen besteht, die faltbar so an dem faltbaren Rohrleitungs-Tragmast angebracht sind, daß beide zollstockähnlich aufgefaltet werden können. Dabei wird die Rohrleitung durch die Knickgelenke des Tragmastes geführt, mit jeweils zweimaliger 90°-Umlenkung. Diese Umlenkungen verursachen im Fördervorgang unerwünschte Rückstöße und damit erhöhte Belastung auf die Tragmast-Konstruktion. Darüberhinaus ist bei derartigen Betonverteilersystemen zum Ausfahren der Betonförderrohrleitung in Betriebsstelluug ein freier Arbeitsraum mit einer Mindesthöhe entsprechend der Rohrsektionslänge erforderlich. Da oft ein entsprechender freier Arbeitsraum nicht vorhanden ist, wird der Einsatz bekannter Betonverteilersysteme eingeschränkt.The invention relates to a concrete distribution system for ready-mixed concrete, consisting of a concrete delivery pipeline consisting of several pipe sections and a pipeline supporting mast made of several supporting mast pieces. The concrete delivery pipeline is connected to a stationary or to a mobile concrete pump, the concrete is fed. As a rule, this is ready-mixed concrete.
For a concrete distribution system of the type mentioned, it is necessary to design it in such a way that it can also be used on construction sites with a limited free working height.
Concrete distribution systems for ready-mixed concrete are known in which the concrete delivery pipeline consists of several pipe sections which are foldably attached to the foldable pipeline mast so that both can be unfolded like a folding rule. The pipeline is routed through the articulated joints of the mast, each with two 90 ° deflections. These deflections cause undesirable recoil in the conveying process and thus increased stress on the support mast construction. In addition, a free working space with a minimum height corresponding to the length of the pipe section is required for such concrete distribution systems to extend the concrete delivery pipeline in the operating position. Since there is often no corresponding free work space, the use of known concrete distribution systems is restricted.

Der Erfindung liegt die Aufgabe zugrunde, die Einsatzmöglichkeiten eines Betonverteilersystems für Transportbeton zu erweitern und erhöhte Belastungen auf die Tragmast-Konstruktion zu vermeiden.
Die Lösung der gestellten Aufgabe erfolgt mittels der Ausgestaltung des Betonverteilersystems gemäß dem Kennzeichen des Hauptanspruchs.
Vorteilhafte Ausgestaltungen der Erfindung werden erzielt durch die kennzeichnenden Merkmale der Unteransprüche.
Die erfindungsgemäße Ausgestaltung des Betonverteilersystems in Verbindung mit einer Betonpumpe hat den Vorteil des Einsatzes auf Baustellen mit begrenzter freier Arbeitshöhe, wie z.B. Tunnels, Hallen und ähnliche Bauwerke. The invention has for its object to expand the possible uses of a concrete distribution system for ready-mixed concrete and to avoid increased loads on the mast structure.
The task is solved by means of the design of the concrete distribution system according to the characterizing part of the main claim.
Advantageous embodiments of the invention are achieved by the characterizing features of the subclaims.
The inventive design of the concrete distribution system in connection with a concrete pump has the advantage of being used on construction sites with a limited free working height, such as tunnels, halls and similar structures.

Die teleskopierbare Betonförderleitung hat darüberhinaus den Vorteil, daß sie geradlinig ist und Rückstöße durch Umlenkungen nicht auftreten können.
Die konstruktive Ausgestaltung der einzelnen Rohrsektionen mit Kolben bzw. Dichtkopf erweist sich im Betrieb als besonders vorteilhaft, da Betonanbackungen nicht auftreten können, bzw. ungünstigenfalls abgelöst werden. Die Standzeiten der Kolben und der Dichtungen werden dadurch erheblich erhöht.
Das erfindungsgemäße Betonverteilersystem kann kombiniert werden mit konventionellen Knickarmen und den zugehörigen Betonförderrohrleitungen.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt. Es zeigt

Fig. 1 -
das Betonverteilersystem mit zwei Rohrsektionen und zwei Tragmaststücken im Längsschnitt und
Fig.2 -
die teleskopierbare Betonförderrohrleitung im Längsschnitt mit Kolben und Dichtkopf.
The telescopic concrete delivery line also has the advantage that it is straight and recoil from deflections can not occur.
The constructive design of the individual pipe sections with pistons or sealing heads proves to be particularly advantageous in operation, since concrete caking cannot occur or, in the worst case, can be removed. This significantly increases the service life of the pistons and seals.
The concrete distributor system according to the invention can be combined with conventional articulated arms and the associated concrete delivery pipes.
An embodiment of the invention is shown in the drawings. It shows
Fig. 1 -
the concrete distribution system with two pipe sections and two masts in longitudinal section and
Fig. 2 -
the telescopic concrete delivery pipe in longitudinal section with piston and sealing head.

Auf dem Trägerfahrzeug 1 nach Fig. 1, welches ein LKW oder ein Anhänger sein kann und das in der Regel auch die Betonförderpumpe aufnimmt, ist der Trag- und Drehschemel 2 für den Rohrleitungs-Tragmast 3 mit den Tragmaststücken 4, 5 befestigt. Das Maststück 5 kann teleskopartig gegenüber dem Maststück 4 aus- und eingefahren werden. Die hierzu eingesetzten Gleitelementein bekannter Art sind nicht Gegenstand der Erfindung.
Die Rohrsektion 6 der Betonförder-Rohrleitung ist an der Zuführseite am Tragmaststück 4 befestigt und über den Trag- und Drehschemel 2 mit der Betonförderpumpe verbunden. Diese Rohrsektion 6 weist am Ende den Kolben 7 auf, der innerhalb der Rohrsektion 8 beim Ein- und Ausfahren gleitet. Die Rohrsektion 8 umschließt die Rohrsektion 6, ist einmal am Tragmaststück 5 befestigt und kann über den Dichtkopf 9 auf der Rohrsektion 6 gleiten.On the carrier vehicle 1 according to FIG. 1, which can be a truck or a trailer and which usually also houses the concrete feed pump, the support and turntable 2 for the pipeline support mast 3 is fastened to the support mast pieces 4, 5. The mast section 5 can be telescopically extended and retracted relative to the mast section 4. The sliding elements used for this purpose of a known type are not the subject of the invention.
The pipe section 6 of the concrete conveying pipeline is fastened to the supporting mast piece 4 on the feed side and is connected to the concrete conveying pump via the supporting and rotating bolster 2. At the end, this tube section 6 has the piston 7, which slides within the tube section 8 when it is retracted and extended. The pipe section 8 encloses the pipe section 6, is fastened once to the supporting mast piece 5 and can slide over the sealing head 9 on the pipe section 6.

Nach Fig. 2 ist der Kolben 7 am Ende der Rohrsektion 6 als Gummikolben ausgebildet und starr verbunden. Zwischen Rohrsektion 6 und Rohrsektion 8 verbleibt der ringförmige Spülraum 10, der je nach Betriebszustand der Betonförderrohrleitung unterschiedliche Länge aufweist. 2, the piston 7 is formed at the end of the tube section 6 as a rubber piston and rigidly connected. The ring-shaped remains between tube section 6 and tube section 8 Rinse chamber 10, which has a different length depending on the operating state of the concrete delivery pipeline having.

Am Anfang der Rohrsektion 8 ist der Dichtkopf 9 angeordnet, der diese Rohrsektion gegenüber der ersten Rohrsektion 6 abdichtet und die Zu- und Abführung für den Spülraum 10 bildet. Die Abdichtung 12 kann in konventioneller Art mit bekannten Dichtelementen erfolgen. Vorteilhafterweise ist der Dichtkopf 9 mit zwei Anschlüssen 11 für Spülmittelzu- bzw.-abfluß versehen.At the beginning of the pipe section 8, the sealing head 9 is arranged, this pipe section seals against the first pipe section 6 and the inlet and outlet for the wash cabinet 10 forms. The seal 12 can be of a conventional type with known sealing elements respectively. The sealing head 9 is advantageously provided with two connections 11 for the inflow or outflow of detergent Mistake.

Das Spülmittel, in der Regel Wasser, ohne oder mit speziellen Zusätzen, kommt aus einem Wassertank, nicht dargestellt, und fließt in diesen zurück.
Vor dem Rücklauf in den Tank ist ein Filter mit Sandfüllung vorgesehen, der Zementteilchen aus dem ringförmigen Spülraum 10 zurückhält. Dadurch wird die Umwälzpumpe vor Verschleiß geschützt. Die Umwälzung des Spülmittels erfolgt über eine Pumpe, die in der Regel im Wassertank angeordnet ist. The detergent, usually water, with or without special additives, comes from a water tank, not shown, and flows back into it.
Before the return flow into the tank, a filter with sand filling is provided, which retains cement particles from the annular wash chamber 10. This protects the circulation pump from wear. The detergent is circulated by a pump, which is usually located in the water tank.

LEGENDELEGEND

11
TrägerfahrzeugCarrier vehicle
22nd
Trag- und DrehschemelSupport and turntable
33rd
RohrleitungstragmastPipeline support mast
44th
TragmaststückSupport mast piece
55
TragmaststückSupport mast piece
66
RohrsektionPipe section
77
Kolbenpiston
88th
RohrsektionPipe section
99
DichtkopfSealing head
1010th
SpülraumWashroom
1111
Anschlüsseconnections
1212th
Abdichtungseal

Claims (6)

Betonverteilersystem für Transportbeton, bestehend aus einer Betonförderleitung aus mehreren Rohrsektionen (6, 8) und einem Rohrleitungs-Tragmast aus mehreren Tragmaststücken (4, 5) dadurch gekennzeichnet, daß jede Rohrsektion (6, 8) mit dem zugehörigen Tragmaststück (4, 5) verbunden ist und beide als Einheit mit der in Förderrichtung folgenden Einheit teleskopartig ineinandergleitend ausgebildet sind.Concrete distribution system for ready-mixed concrete, consisting of a concrete delivery line several pipe sections (6, 8) and a pipe mast from several Support mast pieces (4, 5) characterized in that each tube section (6, 8) with the associated support mast piece (4, 5) is connected and both as a unit with the in Direction of conveyance following unit are telescopically formed. Betonverteilersystem für Transportbeton nach Anspruch 1, dadurch gekennzeichnet, daß die Rohrsektion (6) am Ende einen Kolben (7), die übergreifende Rohrsektion (8) am Anfang einen Dichtkopf (9) mit einem Spülraum (10) vor dem Kolben (7) aufweist.Concrete distribution system for ready-mixed concrete according to claim 1, characterized in that the pipe section (6) at the end of a piston (7), the overlapping pipe section (8) on Has a sealing head (9) with a rinsing chamber (10) in front of the piston (7). Betonverteilersystem für Transportbeton nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Kolben (7) mit elastischer Dichtung und starr mit der Rohrsektion (6) verbunden ist, daß der Dichtkopf (9) mit mindestens einer Abdichtung (12) zur übergriffenen Rohrsektion (6) und mit Anschlüssen (11) für Spülbeaufschlagung versehen ist.Concrete distribution system for ready-mixed concrete according to claim 1 and 2, characterized characterized in that the piston (7) with elastic seal and rigid with the Pipe section (6) is connected that the sealing head (9) with at least one seal (12) for the overlapped pipe section (6) and with connections (11) for flushing is provided. Betonverteilersystem für Transportbeton nach Anspruch 3, dadurch gekennzeichnet, daß die elastische Dichtung des Kolbens (7) Gummi ist.Concrete distribution system for ready-mixed concrete according to claim 3, characterized in that the elastic seal of the piston (7) is rubber. Betonverteilersystem für Transportbeton nach Anspruch 3, dadurch gekennzeichnet, daß die Anschlüsse (11) für Spülbeaufschlagung mit einem Tank für Spülflüssigkeit verbunden sind.Concrete distribution system for ready-mixed concrete according to claim 3, characterized in that the connections (11) for flushing with a tank for flushing liquid are connected. Betonverteilersystem für Transportbeton nach Anspruch 5, dadurch gekennzeichnet, daß die Förderung des Spülmittels über eine Pumpe erfolgt.Concrete distribution system for ready-mixed concrete according to claim 5, characterized in that the detergent is pumped.
EP19970117208 1996-10-10 1997-10-04 Concrete distributing system for pumped concrete Withdrawn EP0835971A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19641789 1996-10-10
DE1996141789 DE19641789C1 (en) 1996-10-10 1996-10-10 Concrete distribution system for ready-mixed concrete
US08/942,394 US5868156A (en) 1996-10-10 1997-10-10 Concrete distribution system for transportable concrete

Publications (1)

Publication Number Publication Date
EP0835971A1 true EP0835971A1 (en) 1998-04-15

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ID=26030235

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EP19970117208 Withdrawn EP0835971A1 (en) 1996-10-10 1997-10-04 Concrete distributing system for pumped concrete

Country Status (5)

Country Link
US (1) US5868156A (en)
EP (1) EP0835971A1 (en)
CN (1) CN1131834C (en)
BR (1) BR9705005A (en)
DE (1) DE19641789C1 (en)

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DE10213038A1 (en) * 2002-03-22 2003-10-09 Tbg Transportbeton Rheinhessen Truck-mounted concrete pump
DE19837900B4 (en) * 1998-03-13 2004-08-12 Schwing Gmbh Concrete conveying device and method
WO2014056929A1 (en) * 2012-10-08 2014-04-17 Hudelmaier, Götz Device and method for conveying high-viscosity material
US10443251B2 (en) 2016-10-19 2019-10-15 Somero Enterprises, Inc. Wheeled concrete supply hose moving device
US11585154B2 (en) 2017-09-08 2023-02-21 Epiroc Rock Drills Aktiebolag Mining or construction vehicle
US11661797B2 (en) 2017-09-08 2023-05-30 Epiroc Rock Drills Aktiebolag Mining or construction vehicle and a hydraulic cylinder conduit enclosing a conduit arrangement

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DE19849747C5 (en) 1998-10-28 2005-10-27 Schwing Gmbh Distributor device for thick materials, in particular for concrete
WO2001043932A1 (en) 1999-12-17 2001-06-21 Delaware Capital Formation, Inc. Concrete placing and screeding apparatus and method
US6588976B2 (en) 1999-12-17 2003-07-08 Delaware Capital Formation, Inc. Concrete placing and screeding apparatus and method
DE10106427B4 (en) * 2001-02-12 2006-06-22 Schwing Gmbh Distributor device for thick materials, in particular for concrete
CN102926542A (en) * 2011-08-11 2013-02-13 青岛大学 Rotatable telescoping type pump concrete pouring device
CN103216096A (en) * 2012-01-21 2013-07-24 徐工集团工程机械股份有限公司 Telescopic distribution rod mechanism and concrete pump truck with same
DE102012213729A1 (en) * 2012-08-02 2014-02-06 Putzmeister Engineering Gmbh Concrete distributor boom for concrete pumps
CN103253170B (en) * 2013-04-25 2016-04-06 中国人民解放军海军后勤技术装备研究所 Fluid delivery boom system and vehicle
CN105089678B (en) * 2014-05-15 2017-06-16 中联重科股份有限公司 Concrete spraying equipment and arm support system thereof
US20230151624A1 (en) 2021-11-12 2023-05-18 EZ Placer, LLC Mobile concrete distribution system

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US3860175A (en) * 1972-12-21 1975-01-14 Forms Const Mobile concrete distributing boom apparatus
WO1989011574A1 (en) * 1988-05-27 1989-11-30 Fieldmark Designs Limited Spraying apparatus
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837900B4 (en) * 1998-03-13 2004-08-12 Schwing Gmbh Concrete conveying device and method
DE10213038A1 (en) * 2002-03-22 2003-10-09 Tbg Transportbeton Rheinhessen Truck-mounted concrete pump
WO2014056929A1 (en) * 2012-10-08 2014-04-17 Hudelmaier, Götz Device and method for conveying high-viscosity material
US10443251B2 (en) 2016-10-19 2019-10-15 Somero Enterprises, Inc. Wheeled concrete supply hose moving device
US10961728B2 (en) 2016-10-19 2021-03-30 Somero Enterprises, Inc. Wheeled concrete supply hose moving device
US11585154B2 (en) 2017-09-08 2023-02-21 Epiroc Rock Drills Aktiebolag Mining or construction vehicle
US11661797B2 (en) 2017-09-08 2023-05-30 Epiroc Rock Drills Aktiebolag Mining or construction vehicle and a hydraulic cylinder conduit enclosing a conduit arrangement

Also Published As

Publication number Publication date
US5868156A (en) 1999-02-09
BR9705005A (en) 1998-10-06
DE19641789C1 (en) 1998-07-16
CN1131834C (en) 2003-12-24
CN1181446A (en) 1998-05-13

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