EP0796950A1 - Method and apparatus for exchanging a manhole frame installed in an asphalt layer - Google Patents

Method and apparatus for exchanging a manhole frame installed in an asphalt layer Download PDF

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Publication number
EP0796950A1
EP0796950A1 EP97101576A EP97101576A EP0796950A1 EP 0796950 A1 EP0796950 A1 EP 0796950A1 EP 97101576 A EP97101576 A EP 97101576A EP 97101576 A EP97101576 A EP 97101576A EP 0796950 A1 EP0796950 A1 EP 0796950A1
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EP
European Patent Office
Prior art keywords
frame
lifting device
milling
milling unit
spreading arms
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EP97101576A
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German (de)
French (fr)
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EP0796950B1 (en
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Paul-Gerd Stellmach
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    • 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
    • E02D29/1445—Tools for positioning or removing cover frames
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
    • E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
    • E01C23/094—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters about vertical or inclined axes, e.g. for core sampling

Definitions

  • the present invention relates to a method for replacing a frame of a manhole cover embedded in an asphalt surface, and to a device for carrying out the method.
  • Exchangeable frames have so far mainly been used by compressed air-operated tools, such as pneumatic hammers or the like. released from their bond with the asphalt surface and manually removed.
  • the open position must be processed manually to a relatively large extent.
  • the present invention has for its object to provide a method of the generic type that can be largely automated and a replacement of the frame is possible without significant rework or preparation of the construction site.
  • the casting compound consisting of a plastic mortar, to which a bituminous joint casting compound is applied up to the end of the asphalt surface.
  • the blocking time of these potting compounds is relatively short, so that a traffic problem usually associated with the replacement is removed after a correspondingly short time.
  • the entire method according to the invention entails considerable cost savings, resulting from the very short repair times now possible, a low cost of materials and the shortening of traffic obstruction times resulting from the reasons mentioned.
  • a device for performing the method is designed such that a milling unit, which can be guided concentrically around the frame, and a lifting device, which engages on the inside of the frame in a form-fitting or non-positive manner, are provided, the milling unit and the lifting device being adjustable in height in its position gesture supporting the asphalt surface.
  • the milling unit is designed as a drill bit which has a slightly larger diameter than the outside diameter of the frame.
  • a rotating milling arm can also be provided, at the end of which a rotating milling head can be connected.
  • the lifting device expediently has spreading arms which can be moved horizontally and which engage under the frame, which is usually located in a mortar bed.
  • the vertical adjustment of the lifting device on the one hand and the milling unit on the other hand are switched separately from one another.
  • Hydraulic movability and a hydraulic drive of the milling unit are suitable, since corresponding devices, which have a hydraulic unit, are usually present in the construction site area to which the device can be connected, for example a shovel loader or the like.
  • a device is shown with which a frame 7 of a manhole cover, which is embedded in an asphalt surface, can be replaced.
  • the device In its basic structure, the device consists of a frame 1 which has four feet which are supported on the asphalt surface.
  • a milling unit 2 and a lifting device 5 are arranged on the frame 1 in a height-adjustable manner, expediently in the middle region.
  • the milling unit 2 has a drill bit 3, the clear diameter of which is larger than the outer diameter of the frame 4 and by means of which a slot is introduced concentrically around the frame 7 into the asphalt surface.
  • the depth of the slot extends below the underside of the frame 7.
  • the drill bit 3 is set in rotation by means of a belt drive 15 which can be driven by an oil motor 4.
  • This can be controlled via a valve 16, which can be connected to an external hydraulic unit.
  • pistons 8 and 10 are controllable via such valves, with which vertical adjustment of the milling unit 2 and the lifting device 5 is possible.
  • the cylinder 11 While the cylinder 9 is firmly connected to the frame 11, the cylinder 11 is displaceable relative to it, this cylinder 11 being fastened to a guide tube 18 which is guided on the outside of the cylinder 9 so as to be secure against rotation.
  • the lifting device 5 has four spreading arms 6 which are at right angles to one another and extend transversely to the vertical and which can likewise be moved back and forth hydraulically in the longitudinal axis direction.
  • the spreading arms 6 have an angular support part 19 whose horizontal leg, which has a wedge-shaped end, can be pressed under the frame 7, the feed to the frame 7 being limited by the angled, vertical leg, which then abuts the inside of the frame 7.
  • a container 12 is fastened to the frame, in which a cooling liquid is stored, which is guided via a nozzle tube 13 into the engagement area of the drill bit 3 and cools it during operation.
  • the frame 1 is placed over the frame 7 still located in the asphalt surface in such a way that the drill bit 3 runs centrally to it, with a manhole cover having been removed beforehand, so that the actual manhole is open.
  • the lifting device 5 is lowered by actuating the control valve 16 connected to an external hydraulic unit until the spreading arms 6 are at a height with a mortar joint on which the frame 7 rests.
  • the drill bit 3 By actuating the oil motor 4, the drill bit 3 is set in rotation and advanced by pressurizing the piston 10. A slot is milled into the asphalt surface, which is concentric with the frame 7 at a certain distance.
  • the depth of the slot extends beyond the underside of the frame 7, the drill bit being raised and brought out of its engaged position after the intended slot depth has been reached.
  • connection to the mortar layer breaks off essentially without impairing this layer forming a support.
  • the resulting borehole is cleaned and then a new frame is inserted.
  • the slot created by milling can now be poured with a quick-setting plastic mortar, usefully up to a little below the top edge of frame 7.
  • the free space that results up to the asphalt ceiling is then poured out with a hot grout.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Architecture (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Road Repair (AREA)
  • Sewage (AREA)
  • Road Paving Machines (AREA)

Abstract

The method involves milling a concentric slot around the frame on the outside, which extends in depth to at least the lower frame edge. The frame is lifted out by a lifting device (5), a new frame is fitted, and the slot is filled with a casting compound. The lifting device engages positively on the inside of the frame (7). The milling tool and lifting device are height-adjustably fastened in a frame (1), which supports itself on the asphalt road surface. A container (12) for cooling fluid is fastened to the frame.

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Auswechseln eines in eine Asphaltdecke eingelassenen Rahmens einer Schachtabdeckung sowie eine Vorrichtung zur Durchführung des Verfahrens.The present invention relates to a method for replacing a frame of a manhole cover embedded in an asphalt surface, and to a device for carrying out the method.

Auszuwechselnde Rahmen werden bislang hauptsächlich durch druckluftbetriebene Werkzeuge, wie Drucklufthämmer o.dgl. aus ihrem Verbund mit der Asphaltdecke gelöst und manuell ausgebaut.Exchangeable frames have so far mainly been used by compressed air-operated tools, such as pneumatic hammers or the like. released from their bond with the asphalt surface and manually removed.

Da hierdurch keine halbwegs genaue Arbeitsweise möglich ist, kommt es zu unkontrollierten Ausbrechungen der Asphaltdecke, die eine anschließende aufwendige Reparatur notwendig machen.Since this does not make it possible to work in a reasonably precise manner, there are uncontrolled breakouts in the asphalt surface, which necessitate a subsequent expensive repair.

Überdies muß in relativ großem Umfang die geöffnete Stelle manuell bearbeitet werden.In addition, the open position must be processed manually to a relatively large extent.

All dies ist mit einem erheblichen Kostenaufwand verbunden, der sich zum einen aus der erforderlichen Arbeitsintensität und zum anderen aus einem übergebühr hohen Materialeinsatz ergibt.All of this is associated with a considerable cost, which results on the one hand from the required labor intensity and on the other hand from an excessive use of materials.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren der gattungsgemäßen Art zu schaffen, das weitgehend automatisierbar ist und ein Auswechseln des Rahmens ohne wesentliche Nacharbeit bzw. Vorbereitung der Baustelle möglich ist.The present invention has for its object to provide a method of the generic type that can be largely automated and a replacement of the frame is possible without significant rework or preparation of the construction site.

Diese Aufgabe wird durch ein Verfahren gelöst, das die Merkmale des Anspruches 1 aufweist.This object is achieved by a method which has the features of claim 1.

Beim Auswechseln eines Rahmens im Sinne des erfindungsgemäßen Verfahrens bleibt die Asphaltdecke weitgehend unbeschädigt, so daß nachfolgende Reparaturarbeiten in größerem Umfang, wie sie bislang notwendig waren, entfallen.When a frame is replaced in the sense of the method according to the invention, the asphalt surface remains largely undamaged, so that subsequent repair work to a large extent, as was previously necessary, is eliminated.

Lediglich der in seiner Breite recht klein zu haltende Schlitz ist nach einem Einsatz eines neuen Rahmens auszugießen, wobei die Vergußmasse aus einem Kunststoffmörtel besteht, auf die bis zum Asphaltdeckenabschluß eine bituminöse Fugenvergußmasse aufgebracht wird.Only the slot, which is to be kept very small in width, is poured out after a new frame has been used, the casting compound consisting of a plastic mortar, to which a bituminous joint casting compound is applied up to the end of the asphalt surface.

Die Absperrzeit dieser Vergußmassen ist relativ kurz, so daß eine üblicherweise mit dem Auswechseln verbundene Verkehrsbehinderung nach entsprechend kurzer Zeit aufgehoben ist.The blocking time of these potting compounds is relatively short, so that a traffic problem usually associated with the replacement is removed after a correspondingly short time.

Das gesamte erfindungsgemäße Verfahren bringt eine erheblich Kosteneinsparung mit sich, resultierend aus den jetzt möglichen sehr kurzen Reparaturzeiten, einem geringen Materialaufwand sowie der aus den erwähnten Gründen sich ergebenden Verkürzungen von Verkehrsbehinderungszeiten.The entire method according to the invention entails considerable cost savings, resulting from the very short repair times now possible, a low cost of materials and the shortening of traffic obstruction times resulting from the reasons mentioned.

Eine Vorrichtung zur Durchführung des Verfahrens ist so ausgebildet, daß eine Fräseinheit, die konzentrisch um den Rahmen führbar ist, und eine Hebeeinrichtung, die innenseitig am Rahmen form- oder kraftschlüssig angreift, vorgesehen sind, wobei die Fräseinheit und die Hebeeinrichtung höhenverstellbar in seinem sich auf der Asphaltdecke abstützenden Geste gehalten wird.A device for performing the method is designed such that a milling unit, which can be guided concentrically around the frame, and a lifting device, which engages on the inside of the frame in a form-fitting or non-positive manner, are provided, the milling unit and the lifting device being adjustable in height in its position gesture supporting the asphalt surface.

Nach einer vorteilhaften Ausbildung der erfindungsgemäßen Vorrichtung ist die Fräseinheit als Bohrkrone gestaltet, die in ihrem lichten Durchmesser etwas größer ist als der Außendurchmesser des Rahmens.According to an advantageous embodiment of the device according to the invention, the milling unit is designed as a drill bit which has a slightly larger diameter than the outside diameter of the frame.

Anstelle einer Bohrkrone kann auch ein sich drehender Fräsarm vorgesehen sein, an dessen Ende ein rotierender Fräskopf angeschlossen sein kann.Instead of a drill bit, a rotating milling arm can also be provided, at the end of which a rotating milling head can be connected.

Die Hebeeinrichtung weist zweckmäßigerweise horizontal verfahrbare Spreizarme auf, die unter den Rahmen greifen, der üblicherweise in einem Mörtelbett liegt.The lifting device expediently has spreading arms which can be moved horizontally and which engage under the frame, which is usually located in a mortar bed.

Die Hebeeinrichtung einerseits und die Fräseinheit andererseits sind in ihrer vertikalen Verstellbarkeit getrennt voneinander geschaltet. Dabei bietet sich eine hydraulische Verfahrbarkeit sowie ein hydraulischer Antrieb der Fräseinheit, beispielsweise mittels eine Ölmotors an, da entsprechende Gerätschaften, die ein Hydraulikaggregat aufweisen, im Regelfall im Baustellenbereich vorhanden sind, an die die Vorrichtung anschließbar ist, beispielsweise ein Schaufellader o.dgl.The vertical adjustment of the lifting device on the one hand and the milling unit on the other hand are switched separately from one another. Hydraulic movability and a hydraulic drive of the milling unit, for example by means of an oil motor, are suitable, since corresponding devices, which have a hydraulic unit, are usually present in the construction site area to which the device can be connected, for example a shovel loader or the like.

Weitere vorteilhafte Ausgestaltungen des Verfahrens sowie der Vorrichtung sind in den Unteransprüchen gekennzeichnet.Further advantageous embodiments of the method and the device are characterized in the subclaims.

Das erfindungsgemäße Verfahren sowie ein Ausführungsbeispiel einer Vorrichtung zur Durchführung des Verfahrens werden nachfolgend anhand der beigefügten Zeichnungen beschrieben.The method according to the invention and an exemplary embodiment of an apparatus for carrying out the method are described below with reference to the accompanying drawings.

Es zeigen:

Figur 1
eine erfindungsgemäße Vorrichtung in einer teilweise geschnittenen Seitenansicht,
Figur 2
einen Querschnitt durch die Vorrichtung gemäß der Linie II-II in Fig. 1,
Figur 3
einen weiteren Querschnitt durch die Vorrichtung gemäß der Linie III-III in Fig. 1.
Show it:
Figure 1
a device according to the invention in a partially sectioned side view,
Figure 2
2 shows a cross section through the device according to line II-II in FIG. 1,
Figure 3
a further cross section through the device along the line III-III in Fig. 1st

In den Figuren ist eine Vorrichtung gezeigt, mit der ein Rahmen 7 einer Schachtabdeckung, der in eine Asphaltdecke eingelassen ist, ausgewechselt werden kann.In the figures, a device is shown with which a frame 7 of a manhole cover, which is embedded in an asphalt surface, can be replaced.

In ihrem Grundaufbau besteht die Vorrichtung aus einem Gestell 1, das vier, sich auf der Asphaltdecke abstützende Füße aufweist.In its basic structure, the device consists of a frame 1 which has four feet which are supported on the asphalt surface.

An dem Gestell 1 sind höhenverstellbar eine Fräseinheit 2 sowie eine Hebeeinrichtung 5 angeordnet, und zwar zweckmäßigerweise im Mittenbereich.A milling unit 2 and a lifting device 5 are arranged on the frame 1 in a height-adjustable manner, expediently in the middle region.

Die Fräseinheit 2 weist eine Bohrkrone 3 auf, deren lichter Durchmesser größer ist als der Außendurchmesser des Rahmens 4 und mittels der konzentrisch ein Schlitz um den Rahmen 7 in die Asphaltdecke eingebracht wird.The milling unit 2 has a drill bit 3, the clear diameter of which is larger than the outer diameter of the frame 4 and by means of which a slot is introduced concentrically around the frame 7 into the asphalt surface.

Die Tiefe des Schlitzes erstreckt sich dabei bis unterhalb der Unterseite des Rahmens 7.The depth of the slot extends below the underside of the frame 7.

Die Bohrkrone 3 wird mittels eines Riementriebs 15 in Rotation versetzt, der über einen Ölmotor 4 antreibbar ist.The drill bit 3 is set in rotation by means of a belt drive 15 which can be driven by an oil motor 4.

Dieser ist über ein Ventil 16, das mit einem externen Hydraulikaggregat verbunden werden kann, steuerbar.This can be controlled via a valve 16, which can be connected to an external hydraulic unit.

Gleichfalls über solche Ventile steuerbar sind Kolben 8 und 10, mit denen eine vertikale Verstellung der Fräseinheit 2 und der Hebeeinrichtung 5 möglich ist.Likewise controllable via such valves are pistons 8 and 10, with which vertical adjustment of the milling unit 2 and the lifting device 5 is possible.

Dabei handelt es sich um doppelt wirkende Kolben, die jeweils in einem Zylinder 9,11 geführt werden, in die jeweils Druckschläuche 17 münden.These are double-acting pistons which are each guided in a cylinder 9, 11 into which pressure hoses 17 each open.

Während der Zylinder 9 fest mit dem Gestell 11 verbunden ist, ist der Zylinder 11 relativ dazu verschiebbar, wobei dieser Zylinder 11 an einem Führungsrohr 18 befestigt ist, das verdrehsicher außenseitig auf dem Zylinder 9 geführt ist.While the cylinder 9 is firmly connected to the frame 11, the cylinder 11 is displaceable relative to it, this cylinder 11 being fastened to a guide tube 18 which is guided on the outside of the cylinder 9 so as to be secure against rotation.

Hierdurch wird eine unabhängig voneinander mögliche vertikale Verstellung der Fräseinheit 2 und der Hebeeinrichtung 5 ermöglicht.This enables the milling unit 2 and the lifting device 5 to be adjusted vertically independently of one another.

Die Hebeeinrichtung 5 weist im vorliegenden Ausführungsbeispiel vier rechtwinklig zueinander stehende, sich quer zur Vertikalen erstreckende Spreizarme 6 auf, die gleichfalls hydraulisch in Längsachsrichtung hin und her bewegbar sind.In the present exemplary embodiment, the lifting device 5 has four spreading arms 6 which are at right angles to one another and extend transversely to the vertical and which can likewise be moved back and forth hydraulically in the longitudinal axis direction.

An ihren Enden weisen die Spreizarme 6 ein winkelförmig ausgebildetes Auflageteil 19 auf, dessen horizontaler Schenkel, der ein keilförmig ausgebildetes Ende aufweist, unter den Rahmen 7 drückbar ist, wobei der Vorschub zum Rahmen 7 hin durch den abgewinkelten, senkrecht stehenden Schenkel begrenzt wird, der dann an der Innenseite des Rahmens 7 anliegt.At their ends, the spreading arms 6 have an angular support part 19 whose horizontal leg, which has a wedge-shaped end, can be pressed under the frame 7, the feed to the frame 7 being limited by the angled, vertical leg, which then abuts the inside of the frame 7.

Weiter ist an dem Gestell ein Behälter 12 befestigt, in dem eine Kühlflüssigkeit gelagert ist, die über ein Düsenrohr 13 in den Eingriffsbereich der Bohrkrone 3 geführt wird und diese während des Betriebs kühlt.Furthermore, a container 12 is fastened to the frame, in which a cooling liquid is stored, which is guided via a nozzle tube 13 into the engagement area of the drill bit 3 and cools it during operation.

Zum Ersetzen eines defekten Rahmens 7 wird das Gestell 1 so über dem noch in der Asphaltdecke befindlichen Rahmen 7 plaziert, daß die Bohrkrone 3 zentrisch dazu verläuft, wobei ein Schachtdeckel zuvor entfernt wurde, so daß der eigentliche Schacht offen ist.To replace a defective frame 7, the frame 1 is placed over the frame 7 still located in the asphalt surface in such a way that the drill bit 3 runs centrally to it, with a manhole cover having been removed beforehand, so that the actual manhole is open.

Sodann wird die Hebeeinrichtung 5 durch Betätigen des an ein externes Hydraulikaggregat angeschlossenes Steuerventil 16 so weit abgesenkt, bis die Spreizarme 6 sich in einer Höhe mit einer Mörtelfuge befinden, auf der der Rahmen 7 aufliegt.Then the lifting device 5 is lowered by actuating the control valve 16 connected to an external hydraulic unit until the spreading arms 6 are at a height with a mortar joint on which the frame 7 rests.

Beim anschließenden Verfahren der Spreizarme 6 in Richtung des Rahmens 7 graben sich die horizontalen Schenkel der Auflageteile 19 in die Mörtelfuge, bis die vertikalen Schenke der Auflageteile 19 an der Wandung des Rahmens 7 anlegen.In the subsequent movement of the spreading arms 6 in the direction of the frame 7, the horizontal legs of the support parts 19 dig into the mortar joint until the vertical legs of the support parts 19 bear against the wall of the frame 7.

Durch ein kurzes Betätigen des Kolbens 8 nach oben wird das Gestell 1 fest gegen die Asphaltdecke gepreßt, so daß ein sicherer Stand gewährleistet ist.By briefly actuating the piston 8 upwards, the frame 1 is pressed firmly against the asphalt surface, so that a secure stand is ensured.

Durch Betätigen des Ölmotors 4 wird die Bohrkrone 3 in Rotation versetzt und durch Druckbeaufschlagung des Kolbens 10 vorgeschoben. Dabei wird ein Schlitz in die Asphaltdecke gefräst, der mit gewissem Abstand konzentrisch zum Rahmen 7 verläuft.By actuating the oil motor 4, the drill bit 3 is set in rotation and advanced by pressurizing the piston 10. A slot is milled into the asphalt surface, which is concentric with the frame 7 at a certain distance.

In seiner Tiefe ragt der Schlitz über die Unterseite des Rahmens 7 hinaus, wobei nach Erreichen der vorgesehenen Schlitztiefe die Bohrkrone angehoben und aus ihrer Eingriffstellung gebracht wird.The depth of the slot extends beyond the underside of the frame 7, the drill bit being raised and brought out of its engaged position after the intended slot depth has been reached.

Nunmehr liegt der Rahmen 7 so weit frei, daß er ohne weiteres durch die Hebeeinrichtung 5 angehoben werden kann. Die Verbindung zur Mörtelschicht reißt dabei im wesentlichen ohne Beeinträchtigung dieser eine Auflage bildenden Schicht ab.Now the frame 7 is so far exposed that it can be easily lifted by the lifting device 5. The connection to the mortar layer breaks off essentially without impairing this layer forming a support.

Durch Zurückfahren der Spreizarme 6 fällt der so gelöste Rahmen 7 ab und kann beseitigt werden.By retracting the spreading arms 6, the frame 7 thus released falls off and can be removed.

Im Bedarfsfall wird das entstandene Bohrloch gesäubert und anschließend ein neuer Rahmen eingesetzt. Der durch das Ausfräsen entstandene Schlitz kann nun mit einem schnell abbindenden Kunststoffmörtel vergossen werden, sinnvollerweise bis etwas unterhalb der Oberkante des Rahmens 7. Der sich bis zur Asphaltdecke ergebende freie Raum wird dann mit einer heißen Fugenvergußmasse ausgegossen.If necessary, the resulting borehole is cleaned and then a new frame is inserted. The slot created by milling can now be poured with a quick-setting plastic mortar, usefully up to a little below the top edge of frame 7. The free space that results up to the asphalt ceiling is then poured out with a hot grout.

BezugszeichenlisteReference list

11
Gestellframe
22nd
FräseinheitMilling unit
33rd
BohrkroneCore bit
44th
ÖlmotorOil engine
55
HebeeinrichtungLifting device
66
SpreizarmSpreader arm
77
Rahmenframe
88th
Kolbenpiston
99
Zylindercylinder
1010th
Kolbenpiston
1111
Zylindercylinder
1212th
Behältercontainer
1313
DüsenrohrNozzle pipe
1414
Fußfoot
1515
RiementriebBelt drive
1616
VentilValve
1717th
Druckschlauchpressure hose
1818th
FührungsrohrGuide tube
1919th
AuflageteilSupport part

Claims (10)

Verfahren zum Auswechseln eines in eine Ashaltdecke eingelassenen Rahmens einer Schachtabdeckung, dadurch gekennzeichnet, daß ein konzentrisch außenseitig des Rahmens verlaufender, sich in seiner Tiefe zumindest bis zur Unterkante des Rahmens erstreckender Schlitz eingefräst, anschließend der Rahmen mittels einer Hebeeinrichtung ausgehoben, ein neuer Rahmen eingesetzt und der Schlitz vergossen wird.Method for replacing a frame of a manhole cover embedded in an asphalt ceiling, characterized in that a slot running concentrically on the outside of the frame and with a depth extending at least to the lower edge of the frame is milled, then the frame is lifted out by means of a lifting device, a new frame is inserted and the slit is shed. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß eine Fräseinheit (2), die konzentrisch um den Rahmen (7) führbar ist, und eine Hebeeinrichtung (5), die innenseitig am Rahmen (7) form- oder krattschlüssig angreift, vorgesehen sind, wobei die Fräseinheit (2) und die Hebeeinrichtung (5) höhenverstellbar in einem sich auf der Asphaltdecke abstützenden Gestell (1) gehalten sind.Device for carrying out the method according to claim 1, characterized in that a milling unit (2) which can be guided concentrically around the frame (7) and a lifting device (5) which engages on the inside of the frame (7) in a form-fitting or scratch-tight manner, are provided, the milling unit (2) and the lifting device (5) being held adjustable in height in a frame (1) supported on the asphalt surface. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Fräseinheit (2) einen Bohrkopf (3) aufweist, dessen lichter Durchmesser größer ist als der Außendurchmesser des Rahmens (7).Apparatus according to claim 2, characterized in that the milling unit (2) has a drill head (3) whose clear diameter is larger than the outer diameter of the frame (7). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Hebeeinrichtung (5), mehrere, vorzugsweise vier, rechtwinklig zueinander stehende, in horizontaler Ebene hin und her verfahrbare Spreizarme (6) aufweist, mittels derer der Rahmen (7) greifbar ist.Apparatus according to claim 2, characterized in that the lifting device (5) has a plurality of, preferably four, spreading arms (6) which are at right angles to one another and can be moved back and forth in the horizontal plane and by means of which the frame (7) can be gripped. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Spreizarme (6) an ihren freien Enden jeweils ein winkelförmiges Auflageteil (19) aufweisen, deren waagerechte keilförmig ausgebildete Schenkel den Rahmen (7) untergreifen.Device according to claim 4, characterized in that the spreading arms (6) each have an angular support part (19) at their free ends, whose horizontal wedge-shaped legs reach under the frame (7). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß neben dem horizontalen ein vertikaler Schenke! am Auflageteil (19) vorgesehen ist, der in Gebrauchsstellung an der Innenseite des Rahmens (7) anliegt.Apparatus according to claim 5, characterized in that in addition to the horizontal a vertical bar! is provided on the support part (19) which in the use position rests on the inside of the frame (7). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Bohrkrone (7) über einen mit einem Motor verbundenen Riemen- oder Zahnradantrieb (15) antreibbar ist.Apparatus according to claim 3, characterized in that the drill bit (7) can be driven via a belt or gear drive (15) connected to a motor. Vorrichtung nach einem oder mehreren der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die Höhenverstellung der Fräseinrichtung (2), der Hebeeinrichtung (5) sowie die horitzontale Verschiebung der Spreizarme (6) hydraulisch erfolgt.Device according to one or more of claims 2 to 7, characterized in that the height adjustment of the milling device (2), the lifting device (5) and the horizontal displacement of the spreading arms (6) is carried out hydraulically. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Hebeeinrichtung (5) und die Fräseinheit (2) jeweils mittels eines doppelt wirkenden Kolbens (8,10) in vertikaler Richtung bewegbar sind.Apparatus according to claim 8, characterized in that the lifting device (5) and the milling unit (2) can each be moved in the vertical direction by means of a double-acting piston (8, 10). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß an dem Gestell (1) ein Behälter (12) zur Aufnahme von Kühlflüssigkeit befestigt ist, an den ein im Bereich der Fräseinrichtung/Asphaltdecke mündendes Düsenrohr (13) angeschlossen ist, aus dem die Kühlflüssigkeit austritt.Apparatus according to claim 2, characterized in that a container (12) for holding coolant is attached to the frame (1), to which a nozzle pipe (13) opening in the area of the milling device / asphalt surface and from which the coolant emerges is connected.
EP97101576A 1996-03-22 1997-02-01 Method and apparatus for exchanging a manhole frame installed in an asphalt layer Expired - Lifetime EP0796950B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611397 1996-03-22
DE19611397A DE19611397A1 (en) 1996-03-22 1996-03-22 Method and device for replacing a frame of a manhole cover embedded in an asphalt surface

Publications (2)

Publication Number Publication Date
EP0796950A1 true EP0796950A1 (en) 1997-09-24
EP0796950B1 EP0796950B1 (en) 2000-04-19

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Family Applications (1)

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EP97101576A Expired - Lifetime EP0796950B1 (en) 1996-03-22 1997-02-01 Method and apparatus for exchanging a manhole frame installed in an asphalt layer

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EP (1) EP0796950B1 (en)
AT (1) ATE191942T1 (en)
DE (2) DE19611397A1 (en)
DK (1) DK0796950T3 (en)
ES (1) ES2144808T3 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943735A1 (en) * 1998-03-18 1999-09-22 Jürgen Stehr Milling or boring apparatus
EP1182299A2 (en) * 2000-08-22 2002-02-27 Jürgen Stehr Method and device for drilling a manhole cover
KR100375811B1 (en) * 2000-12-20 2003-03-15 미래피앤씨(주) manhole repair apparatus and method thereof
EP1375755A1 (en) * 2002-05-31 2004-01-02 M. Nettek International, Inc., Technology, Development & Marketing Method of removing the frame of a covered manhole and device therefor
WO2011121369A1 (en) * 2010-03-30 2011-10-06 Dimitrios Tsouvalas Fast method of manhole (drain) restoration on asphalt road
EP3719209A2 (en) 2019-04-02 2020-10-07 Simex S.r.l. Excavating assembly and operating machine comprising this assembly
CN112897329A (en) * 2021-04-25 2021-06-04 江苏徐工工程机械研究院有限公司 Clamping and lifting device of inspection well cover base and engineering machinery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101463193B1 (en) 2012-10-16 2014-11-24 박경희 Manhole height adjustment implement

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US3401973A (en) * 1966-12-27 1968-09-17 Norwood L Sorrell Multiple point lift plate
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
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FR1142699A (en) * 1956-02-16 1957-09-20 Process for repairing or forming joints between concrete slabs and machine for the implementation of this process
CH665863A4 (en) * 1962-06-01 1967-01-31
US3401973A (en) * 1966-12-27 1968-09-17 Norwood L Sorrell Multiple point lift plate
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
US4924951A (en) * 1989-01-13 1990-05-15 Paulson Roger W Manhole cutter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943735A1 (en) * 1998-03-18 1999-09-22 Jürgen Stehr Milling or boring apparatus
EP1182299A2 (en) * 2000-08-22 2002-02-27 Jürgen Stehr Method and device for drilling a manhole cover
EP1182299A3 (en) * 2000-08-22 2002-11-27 Jürgen Stehr Method and device for drilling a manhole cover
CZ303301B6 (en) * 2000-08-22 2012-07-25 Method for milling manhole cover and/or location frame for manhole cover, apparatus for making the same, manhole maintenance method, method of manhole new construction and location frame for manhole cover
KR100375811B1 (en) * 2000-12-20 2003-03-15 미래피앤씨(주) manhole repair apparatus and method thereof
EP1375755A1 (en) * 2002-05-31 2004-01-02 M. Nettek International, Inc., Technology, Development & Marketing Method of removing the frame of a covered manhole and device therefor
US6709064B2 (en) 2002-05-31 2004-03-23 M. Nettek International, Inc., Technology Development & Marketing Method and device for detaching or cutting out an embedded manhole frame
WO2011121369A1 (en) * 2010-03-30 2011-10-06 Dimitrios Tsouvalas Fast method of manhole (drain) restoration on asphalt road
EP3719209A2 (en) 2019-04-02 2020-10-07 Simex S.r.l. Excavating assembly and operating machine comprising this assembly
CN112897329A (en) * 2021-04-25 2021-06-04 江苏徐工工程机械研究院有限公司 Clamping and lifting device of inspection well cover base and engineering machinery

Also Published As

Publication number Publication date
EP0796950B1 (en) 2000-04-19
ES2144808T3 (en) 2000-06-16
DE59701460D1 (en) 2000-05-25
DK0796950T3 (en) 2000-09-18
DE19611397A1 (en) 1997-09-25
ATE191942T1 (en) 2000-05-15

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