EP0380915A1 - Fitting for injecting mineral binding agents into construction parts - Google Patents

Fitting for injecting mineral binding agents into construction parts Download PDF

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Publication number
EP0380915A1
EP0380915A1 EP90100202A EP90100202A EP0380915A1 EP 0380915 A1 EP0380915 A1 EP 0380915A1 EP 90100202 A EP90100202 A EP 90100202A EP 90100202 A EP90100202 A EP 90100202A EP 0380915 A1 EP0380915 A1 EP 0380915A1
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EP
European Patent Office
Prior art keywords
connection
shaft
binding agents
injection packer
mineral binding
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Withdrawn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
EP90100202A
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German (de)
French (fr)
Inventor
Adolf Eggstein
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.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co KG
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.)
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Publication date
Application filed by Fischerwerke Artur Fischer GmbH and Co KG filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Publication of EP0380915A1 publication Critical patent/EP0380915A1/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Withdrawn legal-status Critical Current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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • 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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection

Definitions

  • the invention relates to an injection packer of the type specified in the preamble of the main claim.
  • mineral binders are used instead of synthetic resin. Because of the different composition and flow properties of synthetic resins and mineral binders, the injection packers used for synthetic resins are not suitable for pressing mineral binders.
  • the invention has for its object to provide an injection packer that is suitable for the compression of mineral binders and is both inexpensive to manufacture and easy and quick to assemble.
  • connection Due to the connection molded integrally on the shaft in the injection molding process, it is possible to provide the longitudinal bore through the connection and shaft with a diameter that is the same over the entire length. This ensures an undisturbed, trouble-free flow. Furthermore, sealing problems between the connecting piece and the shaft are avoided.
  • the injection packer consists of only one part and is thus very inexpensive to manufacture. For assembly, the injection packer is inserted into the prepared borehole, the diameter of which is slightly larger than the smallest diameter of the conical shaft. The injection packer is driven into the borehole with several hammer blows until the stem of the injection packer is firmly wedged in the borehole with a tubular impact tool that can be placed over the connection and is seated on the stop shoulder formed by the larger shaft diameter.
  • the binder After connecting the hose of the high-pressure pump, the binder is now injected into the blind hole until material rises from the injection packers placed next to it.
  • the outer surface of the shaft can be provided with circumferential ribs, which can also be designed as a thread with a sawtooth profile.
  • the injection packers 1a, 1b according to FIGS. 1 and 2 are made of impact-resistant plastic by injection molding, the connection 2 being integrally formed on the shaft 3.
  • the shaft 3 is conical in both embodiments, the shaft 3 of the injection packer 1a having a smooth outer surface 4. Due to the reduced diameter of the connection 2 compared to the shaft diameter, a stop shoulder 5 results, on which the insertion tool 6, which can be put over the connection 2, can be placed. With this impact tool 6, the injection packer 1a is driven into a blind hole 7 until the shaft 3 of the injection packer is wedged in the hole 7.
  • the mineral binder After postponing the with an ent speaking coupling piece provided hose (not shown) on the connection 2 of the injection packer, the mineral binder is pressed with a high pressure pump through the longitudinal bore 8 of the injection packer 1a, 1b into the blind hole. Due to the high pressure of approx. 200 bar, the binder penetrates through the wall of the blind hole into the material of the component to compress it. The injection is carried out until material rises from the adjacent injection packer.
  • the shaft 3 of the injection packer 1b according to FIG. 2 has, on its outer surface, circumferential ribs 9 designed as threads. It is advisable to use a rotary impact wrench to set such an injection packer.
  • the latter For torque transmission from the machine to the injection packer, the latter has a square 10 at the end of the shaft 3 having the connection 2, by means of which a key clamped in the machine can be put over.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

To repair cracked construction parts, it is known to fill the cracks by injections of synthetic resin. Owing to the different composition and flow properties of synthetic resins and mineral binding agents, the fittings used for synthetic resins are not suitable for injecting mineral binding agents. To provide a fitting which is suitable for injecting mineral binding agents and which can not only be manufactured inexpensively but also mounted simply and quickly, the connection (2) is integrally moulded on the shank (3), which is of conical shape and made of plastic, and the connection diameter is reduced relative to the shank diameter to form a stop shoulder (5). <IMAGE>

Description

Die Erfindung bezieht sich auf einen Injektionspacker der im Oberbegriff des Haupt­anspruches angegebenen Gattung.The invention relates to an injection packer of the type specified in the preamble of the main claim.

Zur Sanierung von mit Rissen versehenen Bauteilen ist es bekannt, die Risse durch Kunstharzinjektionen zu verpressen. Zu diesem Zweck werden in die Risse Bohrungen eingebracht, in die zum Injizieren des Kunstharzes Injektionspacker eingeschlagen wer­den. Nach dem Eindrehen eines in der Regel als Nippel ausgebildeten Anschlußstückes in das aus dem Bohrloch ragende Stirnende des Injektionspackers wird mit einer Hoch­druckpumpe das Kunstharz über einen mit dem Anschlußstück verbundenen Schlauch in die Risse gepreßt.For the renovation of components provided with cracks, it is known to press the cracks by means of resin injections. For this purpose, holes are drilled into the cracks, into which injection packers are hammered in to inject the synthetic resin. After screwing in a connection piece, which is usually designed as a nipple, into the front end of the injection packer projecting from the borehole, the synthetic resin is pressed into the cracks by means of a high-pressure pump via a hose connected to the connection piece.

Für die Sanierung von alterungsbedingt porös und wasserdurchlässig gewordenen Betonteilen insbesondere im Tunnel- und Kanalbau wird statt Kunstharz mineralisches Bindemittel verwendet, das mit raserförmig in Sacklochbohrungen gesetzten Injektions­packern von den Sacklochbohrungen ausgehend radial zur Verdichtung des gesamten Betongefüges unter hohem Druck eingepreßt wird. Wegen der unterschiedlichen Zusammensetzung und Fließeigenschaften von Kunstharzen und mineralischem Binde­mittel sind die für Kunstharze eingesetzte Injektionspacker für die Verpressung von mineralischem Bindemittel nicht geeignet.For the renovation of concrete parts that have become porous and water-permeable due to aging, in particular in tunnel and sewer construction, mineral binders are used instead of synthetic resin. Because of the different composition and flow properties of synthetic resins and mineral binders, the injection packers used for synthetic resins are not suitable for pressing mineral binders.

Der Erfindung liegt die Aufgabe zugrunde, einen Injektionspacker zu schaffen, der für die Verpressung von mineralischem Bindemittel geeignet und sowohl kostengünstig her­stellbar als auch einfach und schnell montierbar ist.The invention has for its object to provide an injection packer that is suitable for the compression of mineral binders and is both inexpensive to manufacture and easy and quick to assemble.

Diese Aufgabe wird erfindungsgemäß mit den im Kennzeichen des Hauptanspruches angeführten Mitteln gelöst.This object is achieved according to the invention with the means specified in the characterizing part of the main claim.

Durch den im Spritzgußverfahren einstückig am Schaft angeformten Anschluß ist es möglich, die durch Anschluß und Schaft führende Längsbohrung mit einem auf der gan­zen Länge gleichen Durchmesser zu versehen. Damit wird ein ungestörter problemloser Durchfluß erreicht. Des weiteren sind Abdichtprobleme zwischen Anschlußstück und Schaft vermieden. Der Injektionspacker besteht nur noch aus einem einzigen Teil und ist somit sehr kostengünstig herstellbar. Zur Montage wird der Injektionspacker in das vorbereitete Bohrloch eingesetzt, dessen Durchmesser geringfügig größer ist als der kleinste Durchmesser des konisch ausgebildeten Schaftes. Mit einem rohrförmigen über den Anschluß stülpbaren und auf der durch den größeren Schaftdurchmesser gebildeten Anschlagschulter aufsitzenden Einschlagwerkzeug wird der Injektionspacker mit mehre­ren Hammmerschlägen in das Bohrloch soweit eingetrieben, bis der Schaft des In­jektionspackers fest im Bohrloch verkeilt ist. Nach dem Anschluß des Schlauches der Hochdruckpumpe wird nunmehr das Bindemittel in die Sacklochbohrung solange inji­ziert, bis aus den benachbart gesetzten Injektionspackern Material aufsteigt. Um das Einschlagen der Injektionspacker zu erleichtern kann die Mantelfläche des Schaftes mit umlaufenden Rippen versehen sein, die auch als Gewinde mit sägezahnförmigem Profil ausgebildet werden können. Bei einer solchen Ausgestaltung ist es zweckmäßig, an das den Anschluß aufweisende Ende des Schaftes einen Mehrkantquerschnitt zum Anset­zen eines Schlüssels anzuformen. Damit ist es möglich, den Injektionspacker maschinell mit einem Drehschlagschrauber in das Bohrloch einzutreiben.Due to the connection molded integrally on the shaft in the injection molding process, it is possible to provide the longitudinal bore through the connection and shaft with a diameter that is the same over the entire length. This ensures an undisturbed, trouble-free flow. Furthermore, sealing problems between the connecting piece and the shaft are avoided. The injection packer consists of only one part and is thus very inexpensive to manufacture. For assembly, the injection packer is inserted into the prepared borehole, the diameter of which is slightly larger than the smallest diameter of the conical shaft. The injection packer is driven into the borehole with several hammer blows until the stem of the injection packer is firmly wedged in the borehole with a tubular impact tool that can be placed over the connection and is seated on the stop shoulder formed by the larger shaft diameter. After connecting the hose of the high-pressure pump, the binder is now injected into the blind hole until material rises from the injection packers placed next to it. In order to facilitate the wrapping of the injection packer, the outer surface of the shaft can be provided with circumferential ribs, which can also be designed as a thread with a sawtooth profile. In such an embodiment, it is expedient to form a polygonal cross-section on the end of the shank that has the connection in order to attach a key. This enables the injection packer to be driven mechanically into the borehole using a rotary impact wrench.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:

  • Figur 1 den in einem Bohrloch eingesetzten Injektionspacker,
  • Figur 2 einen Injektionspacker, dessen Schaft mit als Gewinde ausgebildeten umlaufenden Rippen versehen ist.
Exemplary embodiments of the invention are shown in the drawing. Show it:
  • 1 shows the injection packer used in a borehole,
  • Figure 2 shows an injection packer, the shaft of which is provided with circumferential ribs designed as threads.

Die Injektionspacker 1a, 1b nach Figur 1 und 2 sind aus schlagfestem Kunststoff im Spritzgußverfahren hergestellt, wobei der Anschluß 2 einstückig am Schaft 3 angeformt ist. Der Schaft 3 ist bei beiden Ausführungsformen konisch ausgebildet, wobei der Schaft 3 des Injektionspackers 1a eine glatte Mantelfläche 4 aufweist. Durch den gegenüber dem Schaftdurchmesser reduzierten Durchmesser des Anschlusses 2 ergibt sich eine Anschlagschulter 5, auf der das über den Anschluß 2 stülpbare Einschlag­werkzeug 6 aufgesetzt werden kann. Mit diesem Einschlagwerkzeug 6 wird der In­jektionspacker 1a in eine Sacklochbohrung 7 soweit eingetrieben, bis der Schaft 3 des Injektionspackers im Bohrloch 7 verkeilt ist. Nach dem Aufschieben des mit einem ent­ sprechenden Kupplungsstück versehenen Schlauches (nicht dargestellt) auf den Anschluß 2 des Injektionspackers wird das mineralische Bindemittel mit einer Hoch­druckpumpe durch die Längsbohrung 8 des Injektionspackers 1a, 1b in die Sackloch­bohrung eingepreßt. Durch den hohen Druck von ca. 200 bar dringt das Bindemittel durch die Wandung der Sacklochbohrung in das Material des Bauteiles zu dessen Verdichtung ein. Die Injektion wird solange durchgeführt, bis aus dem benachbart gesetzten Injektionspacker Material aufsteigt.The injection packers 1a, 1b according to FIGS. 1 and 2 are made of impact-resistant plastic by injection molding, the connection 2 being integrally formed on the shaft 3. The shaft 3 is conical in both embodiments, the shaft 3 of the injection packer 1a having a smooth outer surface 4. Due to the reduced diameter of the connection 2 compared to the shaft diameter, a stop shoulder 5 results, on which the insertion tool 6, which can be put over the connection 2, can be placed. With this impact tool 6, the injection packer 1a is driven into a blind hole 7 until the shaft 3 of the injection packer is wedged in the hole 7. After postponing the with an ent speaking coupling piece provided hose (not shown) on the connection 2 of the injection packer, the mineral binder is pressed with a high pressure pump through the longitudinal bore 8 of the injection packer 1a, 1b into the blind hole. Due to the high pressure of approx. 200 bar, the binder penetrates through the wall of the blind hole into the material of the component to compress it. The injection is carried out until material rises from the adjacent injection packer.

Der Schaft 3 des Injektionspackers 1b nach Figur 2 weist an seiner Außenfläche umlaufende, als Gewinde ausgebildete Rippen 9 auf. Zum Setzen eines solchen In­jektionspackers empfiehlt es sich, einen Drehschlagschrauber zu verwenden. Zur Dreh­momentübertragung von der Maschine auf den Injektionspacker weist dieser an dem den Anschluß 2 aufweisenden Ende des Schaftes 3 einen Vierkant 10 auf, über den ein in der Maschine eingespannter Schlüssel überstülpbar ist.The shaft 3 of the injection packer 1b according to FIG. 2 has, on its outer surface, circumferential ribs 9 designed as threads. It is advisable to use a rotary impact wrench to set such an injection packer. For torque transmission from the machine to the injection packer, the latter has a square 10 at the end of the shaft 3 having the connection 2, by means of which a key clamped in the machine can be put over.

Claims (4)

1. Injektionspacker zum Injizieren von mineralischem Bindemittel in Bauteilen, wobei der Injektionspacker einen Anschluß für eine das Bindemittel zuführende Leitung sowie einen mit einer Längsbohrung versehenen, konisch ausgebildeten aus Kunststoff bestehenden Schaft aufweist,dadurch gekennzeichnet, daß der Anschluß (2) einstückig am Schaft (3) angeformt und der Anschlußdurchmesser gegenüber dem Schaftdurchmesser zur Bildung einer Anschlagschulter (5) redu­ziert ist.1. Injection packer for injecting mineral binder into components, the injection packer having a connection for a line supplying the binder and a conical plastic shaft provided with a longitudinal bore, characterized in that the connection (2) integrally on the shaft ( 3) integrally formed and the connection diameter compared to the shaft diameter to form a stop shoulder (5) is reduced. 2. Injektionspacker nach Anspruch 1,dadurch gekennzeichnet, daß die Mantel­fläche des Schaftes (3) mit umlaufenden Rippen (9) versehen ist.2. Injection packer according to claim 1, characterized in that the outer surface of the shaft (3) is provided with circumferential ribs (9). 3. Injektionspacker nach Anspruch 2,dadurch gekennzeichnet, daß die Rippen (9) als Gewinde ausgebildet sind.3. Injection packer according to claim 2, characterized in that the ribs (9) are designed as threads. 4. Injektionspacker nach Anspruch 3,dadurch gekennzeichnet, daß das den An­schluß (2) aufweisende Ende des Schaftes (3) mit einem das Ansetzen eines Schlüssels ermöglichenden Mehrkantquerschnitt (10) versehen ist.4. injection packer according to claim 3, characterized in that the connection (2) having the end of the shaft (3) is provided with a polygonal cross-section (10) which enables a key to be attached.
EP90100202A 1989-02-01 1990-01-05 Fitting for injecting mineral binding agents into construction parts Withdrawn EP0380915A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3902925 1989-02-01
DE3902925A DE3902925A1 (en) 1989-02-01 1989-02-01 INJECTION PACKER FOR INJECTING MINERAL BINDING AGENT IN COMPONENTS

Publications (1)

Publication Number Publication Date
EP0380915A1 true EP0380915A1 (en) 1990-08-08

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EP90100202A Withdrawn EP0380915A1 (en) 1989-02-01 1990-01-05 Fitting for injecting mineral binding agents into construction parts

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EP (1) EP0380915A1 (en)
JP (1) JPH02232468A (en)
BR (1) BR9000424A (en)
DE (1) DE3902925A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2154100A1 (en) * 1997-06-16 2001-03-16 Marc Bidaux S A Wall plug for injection of treatment product into masonry wall
WO2001046539A1 (en) * 1999-12-20 2001-06-28 Ludwig Hettich & Co. Sealed filling element and a method for introducing injectable media into cracks or cavities in concrete

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120212A1 (en) * 1991-06-19 1992-12-24 Fischer Artur Werke Gmbh INJECTION PACKER

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154116A (en) * 1936-07-08 1939-04-11 Stewart Warner Corp Lubricant receiving fitting
DE3320428A1 (en) * 1983-06-06 1984-12-06 Hilti Ag, Schaan Closure element for boreholes
DE8617587U1 (en) * 1986-07-02 1987-10-29 Ernst Peiniger Gmbh Unternehmen Fuer Bautenschutz, 5090 Leverkusen, De

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR953996A (en) * 1947-09-18 1949-12-16 Improvements made to crack sealing processes that may occur in masonry structures
US3572956A (en) * 1968-07-30 1971-03-30 Halliburton Co Apparatus for grouting
AT368248B (en) * 1980-01-30 1982-09-27 Scheiber Wilfried INJECTION PACKER FOR HOLE HOLE CLOSURES
JPS58101971A (en) * 1981-12-11 1983-06-17 江本　順成 Pinning method using hollow pipe
JPS59191803A (en) * 1984-04-02 1984-10-31 株式会社荏原製作所 Boiler
DE8813495U1 (en) * 1988-01-15 1989-01-26 Remmertz, Erika, 4050 Moenchengladbach, De

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2154116A (en) * 1936-07-08 1939-04-11 Stewart Warner Corp Lubricant receiving fitting
DE3320428A1 (en) * 1983-06-06 1984-12-06 Hilti Ag, Schaan Closure element for boreholes
DE8617587U1 (en) * 1986-07-02 1987-10-29 Ernst Peiniger Gmbh Unternehmen Fuer Bautenschutz, 5090 Leverkusen, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2154100A1 (en) * 1997-06-16 2001-03-16 Marc Bidaux S A Wall plug for injection of treatment product into masonry wall
WO2001046539A1 (en) * 1999-12-20 2001-06-28 Ludwig Hettich & Co. Sealed filling element and a method for introducing injectable media into cracks or cavities in concrete

Also Published As

Publication number Publication date
BR9000424A (en) 1991-01-15
DE3902925A1 (en) 1990-08-02
JPH02232468A (en) 1990-09-14

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