EP0747539A1 - Method of manufacturing a water evacuating device with dampening means - Google Patents

Method of manufacturing a water evacuating device with dampening means Download PDF

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Publication number
EP0747539A1
EP0747539A1 EP95108889A EP95108889A EP0747539A1 EP 0747539 A1 EP0747539 A1 EP 0747539A1 EP 95108889 A EP95108889 A EP 95108889A EP 95108889 A EP95108889 A EP 95108889A EP 0747539 A1 EP0747539 A1 EP 0747539A1
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EP
European Patent Office
Prior art keywords
elastomer
tool
molding tool
damping strip
strip
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
EP95108889A
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German (de)
French (fr)
Other versions
EP0747539B1 (en
Inventor
Walter Dipl.-Ing. Weiler
Alfred Ingenieur Fuchs
Horst Heimann
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.)
Aqseptence Group GmbH
Original Assignee
Passavant Werke AG 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.)
Filing date
Publication date
Application filed by Passavant Werke AG and Co KG filed Critical Passavant Werke AG and Co KG
Priority to EP95108889A priority Critical patent/EP0747539B1/en
Priority to AT95108889T priority patent/ATE164902T1/en
Priority to DE59501851T priority patent/DE59501851D1/en
Publication of EP0747539A1 publication Critical patent/EP0747539A1/en
Application granted granted Critical
Publication of EP0747539B1 publication Critical patent/EP0747539B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/149—Annular gaskets

Definitions

  • the invention relates to a method for producing drainage articles for trafficable roads according to the preamble of claim 1 and is intended to simplify and reduce the cost of introducing the damping insert strips.
  • a groove with a trapezoidal cross-section widening downwards is worked into the contact surface and the prefabricated strip of elastomer is then rolled into the groove.
  • the DIN require machining of the groove with narrow tolerances. It is obvious that despite the pre-casting of the groove formed with machining allowances, the machining is very complex and expensive.
  • the machine for rolling in the insert strip is also complicated. Piercing the groove and rolling in the insert strips mean transporting and clamping the workpieces twice.
  • the design of the damping insert does not correspond to the norm, which stipulates that the insert strip must protrude by a certain amount over the surrounding contact surface.
  • the molding tool placed on the support surface via the preferably pre-cast depression can either be open at the top for introducing (and possibly smoothing) the elastomer composition. Alternatively, however, it is also conceivable to make the mold closed at the top and to provide it with pouring and injection openings. In both cases, the top of the cushioning insert can be the final state, i.e. get the right protrusion over the contact surface. However, it is also possible to process the insert to the correct protrusion after curing and to smooth it even further. With this new manufacturing process, both the depression and the surrounding contact surfaces can remain unprocessed. The correct dimension of the overhang is generated by averaging the unprocessed contact surface when aligning the molding tool or during subsequent removal.
  • FIG. 1 Two possible embodiments of the new production method are shown in the figures, specifically in FIG. 1 with a mold open at the top and in FIG. 2 with a mold closed at the top.
  • the frame for a manhole cover is a cast iron frame 1, which is later embedded in a concrete ring.
  • the externally cast-on vertical ribs 2 have shoulders 3, on which reinforcements are placed.
  • the frame has a groove 5 preformed into the support surface 5, into which the insert strip 7 is cast and anchored.
  • a double ring 9, 9 ' is used as the molding tool 8 for the overhang, the inner ring 9 containing a centering 10 which engages over the inner edge of the bearing surface.
  • the elastomer is poured into the gap between the two rings and, if necessary, smoothed out. Depending on the viscosity, filling is also an option.
  • the molding tool 9, 9 ' is lifted off and the insert strip is twisted down to the standard overhang. Only plastic chips are generated, which can be disposed of properly.
  • the molding tool 19 has the profile of an upside-down U.
  • the closed top contains one or more injection openings 21, into which the pourable elastomer is introduced. After lifting the ring shape, only the sprue created at the injection opening needs to be removed.
  • the smooth bottom of the molding tool results in a smooth surface of the insert strip, which does not need to be reworked. Any out-of-roundness of the casting frame is compensated for by the molding tool.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Springs (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The elastomeric damping strip in at least one cover resting face of metal is laid into a depression of the metal face. The strip is made of a casting or spatula-filling elastomer mass (7) and protrudes over the resting faces, with its protruding part shaped by a tool (19). The tool is top-open and the elastomer mass is inserted in firm connection with the tool top side. The tool, alternatively, may be top-closed and the elastomer mass may be introduced via injection apertures (21), filling the tool cavity.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Herstellen von Entwässerungsgegenständen für befahrbare Straßen nach dem Oberbegriff von Anspruch 1 und soll das Einbringen der dämpfenden Einlagestreifen vereinfachen und verbilligen.The invention relates to a method for producing drainage articles for trafficable roads according to the preamble of claim 1 and is intended to simplify and reduce the cost of introducing the damping insert strips.

Es ist seit vielen Jahren geübte Praxis und auch in mehreren DIN-Normen für Straßenaufsätze und Schachtabdeckungen festgelegt, daß mindestens in eine der Auflageflächen von Einlaufrost oder Deckel und Rahmen ein dämpfender Einlagestreifen aus einem Elastomer bestimmter Shore-Härte eingebracht wird.It has been common practice for many years and also specified in several DIN standards for street attachments and manhole covers that a damping insert strip made of an elastomer of a certain Shore hardness is inserted into at least one of the support surfaces of the intake grate or cover and frame.

Dafür wird in die Auflageflache eine Nut mit nach unten breiter werdendem Trapezquerschnitt eingearbeitet und in die Nut dann der vorgefertigte Streifen aus Elastomer eingewalzt. Die DIN schreiben eine Bearbeitung der Nut mit engen Toleranzen vor. Es leuchtet ein, daß trotz des Vorgießens der mit Bearbeitungszugaben geformten Nut die Bearbeitung sehr aufwendig und teuer ist. Auch die Maschine zum Einwalzen des Einlagestreifens ist kompliziert. Das Hinterstechen der Nut und das Einwalzen der Einlagestreifen bedeuten ein zweimaliges Transportieren und Einspannen der Werkstücke.For this purpose, a groove with a trapezoidal cross-section widening downwards is worked into the contact surface and the prefabricated strip of elastomer is then rolled into the groove. The DIN require machining of the groove with narrow tolerances. It is obvious that despite the pre-casting of the groove formed with machining allowances, the machining is very complex and expensive. The machine for rolling in the insert strip is also complicated. Piercing the groove and rolling in the insert strips mean transporting and clamping the workpieces twice.

Zur Vermeidung von Bearbeitungs- und Einlegevorgängen wurde bereits vorgeschlagen (DE-A-36 37 493), keinen vorgefertigten Einlegestreifen zu verwenden, sondern das Elastomer als Gieß- oder Streichmasse auf die Auflagefläche aufzubringen. Zur besseren Verankerung der Streich- bzw. Gießmasse können in der Auflagefläche unbearbeitete Vertiefungen, also auch vorgegossene Nuten vorgesehen werden.In order to avoid processing and insertion processes, it has already been proposed (DE-A-36 37 493) not to use a prefabricated insert strip, but to apply the elastomer as a casting or coating compound to the support surface. For better anchoring of the coating or casting compound, unprocessed depressions, that is to say also pre-cast grooves, can be provided in the contact surface.

Die Ausbildung der dämpfenden Einlage entspricht nicht der Norm, die vorschreibt, daß der Einlagestreifen über die umgebende Auflagefläche um ein bestimmtes Maß vorstehen muß.The design of the damping insert does not correspond to the norm, which stipulates that the insert strip must protrude by a certain amount over the surrounding contact surface.

Die sich aus diesem Nachteil ergebende Aufgabe, eine kostensparend zu erstellende Dämpfungseinlage nach Norm zu finden, wird, ausgehend von der zuletzt geschilderten Vorgehensweise, erfindungsgemäß dadurch gelöst, daß der überstehende Teil des Dämpfungsstreifens durch ein Formwerkzeug hergestellt wird.The problem resulting from this disadvantage of finding a damping insert according to the standard which is economical to produce is, based on the last-described procedure, achieved according to the invention in that the protruding part of the damping strip is produced by a molding tool.

Das auf die Auflagefläche über die vorzugsweise vorgegossene Vertiefung aufgesetzte Formwerkzeug kann entweder zum Einbringen (und ggf. Glattstreichen) der Elastomermasse oben offen sein. Es ist aber alternativ auch denkbar, das Formwerkzeug oben geschlossen zu machen und mit Eingieß- und Einspritzöffnungen zu versehen. In beiden Fällen kann die Oberseite der Dämpfungseinlage den Endzustand, d.h. den richtigen Überstand über der Auflagefläche bekommen. Es ist aber auch möglich, die Einlage nach dem Aushärten auf das richtige Überstandsmaß abzuarbeiten und dabei noch weiter zu glätten. Bei diesem neuen Herstellungsverfahren können sowohl die Vertiefung als auch die umgebende Auflageflächen unbearbeitet bleiben. Das richtige Maß des Überstands wird durch mittelndes Abtasten der unbearbeiteten Auflagefläche beim Ausrichten des Formwerkzeugs oder beim anschließenden Abtragen erzeugt.The molding tool placed on the support surface via the preferably pre-cast depression can either be open at the top for introducing (and possibly smoothing) the elastomer composition. Alternatively, however, it is also conceivable to make the mold closed at the top and to provide it with pouring and injection openings. In both cases, the top of the cushioning insert can be the final state, i.e. get the right protrusion over the contact surface. However, it is also possible to process the insert to the correct protrusion after curing and to smooth it even further. With this new manufacturing process, both the depression and the surrounding contact surfaces can remain unprocessed. The correct dimension of the overhang is generated by averaging the unprocessed contact surface when aligning the molding tool or during subsequent removal.

In den Figuren sind zwei Ausführungsmöglichkeiten des neuen Herstellungsverfahrens dargestellt, und zwar in Fig. 1 mit einem oben offenen Formwerkzeug und in Fig. 2 mit einem oben geschlossenen Formwerkzeug.Two possible embodiments of the new production method are shown in the figures, specifically in FIG. 1 with a mold open at the top and in FIG. 2 with a mold closed at the top.

Bei dem Rahmen für eine Schachtabdeckung handelt es sich um eine gußeiserne Zarge 1, die später in einen Betonring eingebettet wird. Die außen angegossenen vertikalen Rippen 2 besitzen hierfür Absätze 3, auf die Bewehrungen aufgelegt werden. Die Zarge besitzt in der Stufe 4 eine in die Auflagefläche 5 vorgeformte Nut 5, in die der Einlagestreifen 7 eingegossen und verankert wird. Als Formwerkzeug 8 für den Überstand dient ein Doppelring 9, 9', wobei der Innenring 9 eine Zentrierung 10 enthält, die über die Innenkante der Auflagefläche greift.The frame for a manhole cover is a cast iron frame 1, which is later embedded in a concrete ring. For this purpose, the externally cast-on vertical ribs 2 have shoulders 3, on which reinforcements are placed. In step 4, the frame has a groove 5 preformed into the support surface 5, into which the insert strip 7 is cast and anchored. A double ring 9, 9 'is used as the molding tool 8 for the overhang, the inner ring 9 containing a centering 10 which engages over the inner edge of the bearing surface.

Das Elastomer wird in den Spalt zwischen den beiden Ringen gegossen und ggf. glatt gestrichen. Je nach Viskosität kommt auch ein Einspachteln in Frage.The elastomer is poured into the gap between the two rings and, if necessary, smoothed out. Depending on the viscosity, filling is also an option.

Nach Erstarren des Elastomer wird das Formwerkzeug 9, 9' abgehoben und der Einlagestreifen bis auf den normgerechten Überstand abgedreht. Dabei fallen lediglich Kunststoffspäne an, die vorschriftsmäßig entsorgt werden können.After the elastomer has solidified, the molding tool 9, 9 'is lifted off and the insert strip is twisted down to the standard overhang. Only plastic chips are generated, which can be disposed of properly.

Bei dem Verfahren nach Fig. 2 hat das Formwerkzeug 19 das Profil eines auf dem Kopf stehenden U. Die geschlossene Oberseite enthält eine oder mehrere Einspritzöffnungen 21, in die das gießfähige Elastomer eingebracht wird. Nach dem Abheben der Ringform braucht nur der an der Einspritzöffnung entstandene Anguß entfernt werden. Der glatte Boden des Formwerkzeugs ergibt eine glatte Oberfläche des Einlagestreifens, die nicht nachgearbeitet zu werden braucht. Eventuelle Unrundheiten der Gußzarge werden durch das Formwerkzeug ausgeglichen.2, the molding tool 19 has the profile of an upside-down U. The closed top contains one or more injection openings 21, into which the pourable elastomer is introduced. After lifting the ring shape, only the sprue created at the injection opening needs to be removed. The smooth bottom of the molding tool results in a smooth surface of the insert strip, which does not need to be reworked. Any out-of-roundness of the casting frame is compensated for by the molding tool.

Claims (4)

Verfahren zur Herstellung eines Entwässerungsgegenstands, z.B. einer Schachtabdeckung, bei dem mindestens in einer der aus Metall bestehenden Auflageflächen ein in eine Vertiefung eingelassener Dämpfungsstreifen aus einem Elastomer vorgesehen ist, wobei der Dämpfungsstreifen aus einer gieß- oder spachtelfähigen Elastomermasse hergestellt ist,
dadurch gekennzeichnet, daß der Dämpfungsstreifen über die Auflageflächen übersteht und der überstehende Teil des Dämpfungsstreifens durch ein Formwerkzeug hergestellt wird.Method for producing a drainage object, for example a manhole cover, in which a damping strip made of an elastomer is provided in a recess at least in one of the metal support surfaces, the damping strip being made of a pourable or fillable elastomer mass,
characterized in that the damping strip protrudes beyond the bearing surfaces and the protruding part of the damping strip is produced by a molding tool. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Formwerkzeug (9, 9') oben offen ist und die Gieß- bzw. Spachtelmasse mit der Oberseite des Formwerkzeugs bündig eingebracht wird.Method according to claim 1, characterized in that the molding tool (9, 9 ') is open at the top and the casting or leveling compound is introduced flush with the top of the molding tool. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Formwerkzeug (19) oben geschlossen ist und das Elastomer (7') durch Einspritzöffnungen (21), den Werkzeughohlraum füllend, eingebracht wird.A method according to claim 1, characterized in that the mold (19) is closed at the top and the elastomer (7 ') is introduced through injection openings (21) filling the mold cavity. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß das erstarrte Elastomer nach dem Abheben des Formwerkzeugs bis auf den normgerechten Überstand abgetragen wird.Method according to claim 1, 2 or 3, characterized in that the solidified elastomer is removed after the molding tool has been lifted up to the standard overhang.
EP95108889A 1995-06-09 1995-06-09 Method of manufacturing a water evacuating device with dampening means Expired - Lifetime EP0747539B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP95108889A EP0747539B1 (en) 1995-06-09 1995-06-09 Method of manufacturing a water evacuating device with dampening means
AT95108889T ATE164902T1 (en) 1995-06-09 1995-06-09 METHOD FOR PRODUCING A DRAINAGE ARTICLE WITH DAMPING INSERT STRIPS
DE59501851T DE59501851D1 (en) 1995-06-09 1995-06-09 Process for the manufacture of a drainage article with damping insert strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95108889A EP0747539B1 (en) 1995-06-09 1995-06-09 Method of manufacturing a water evacuating device with dampening means

Publications (2)

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EP0747539A1 true EP0747539A1 (en) 1996-12-11
EP0747539B1 EP0747539B1 (en) 1998-04-08

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EP95108889A Expired - Lifetime EP0747539B1 (en) 1995-06-09 1995-06-09 Method of manufacturing a water evacuating device with dampening means

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AT (1) ATE164902T1 (en)
DE (1) DE59501851D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1655416A2 (en) * 2004-11-04 2006-05-10 LIC Langmatz GmbH Cover for manhole shaft, said shaft preferably made from concrete
EP1793048A1 (en) * 2005-11-30 2007-06-06 LIC Langmatz GmbH Cover for a manhole
DE102006054343B3 (en) * 2006-11-17 2008-01-24 Lic Langmatz Gmbh Sealing system for manhole covers comprises profile frame fitting loosely against manhole rim, base of profile frame having grooves in its upper and lower surfaces, in which rubber cords are mounted of greater diameter than depth of grooves
DE102006045873A1 (en) * 2006-09-28 2008-04-10 Lic Langmatz Gmbh Cover for manhole used in providing access to underground cables and pipes, has circumferential profile strip arranged between manhole lid and holding frame, and sealing cord inserted into circumferential groove formed on holding frame

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637493A1 (en) 1986-11-04 1988-05-05 Passavant Werke Manhole cover with damping insert

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637493A1 (en) 1986-11-04 1988-05-05 Passavant Werke Manhole cover with damping insert

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1655416A2 (en) * 2004-11-04 2006-05-10 LIC Langmatz GmbH Cover for manhole shaft, said shaft preferably made from concrete
EP1655416A3 (en) * 2004-11-04 2008-03-05 LIC Langmatz GmbH Cover for manhole shaft, said shaft preferably made from concrete
EP1793048A1 (en) * 2005-11-30 2007-06-06 LIC Langmatz GmbH Cover for a manhole
DE102006045873A1 (en) * 2006-09-28 2008-04-10 Lic Langmatz Gmbh Cover for manhole used in providing access to underground cables and pipes, has circumferential profile strip arranged between manhole lid and holding frame, and sealing cord inserted into circumferential groove formed on holding frame
DE102006054343B3 (en) * 2006-11-17 2008-01-24 Lic Langmatz Gmbh Sealing system for manhole covers comprises profile frame fitting loosely against manhole rim, base of profile frame having grooves in its upper and lower surfaces, in which rubber cords are mounted of greater diameter than depth of grooves

Also Published As

Publication number Publication date
EP0747539B1 (en) 1998-04-08
ATE164902T1 (en) 1998-04-15
DE59501851D1 (en) 1998-05-14

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