EP1031663B1 - Device for covering a manhole - Google Patents

Device for covering a manhole Download PDF

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Publication number
EP1031663B1
EP1031663B1 EP00103570A EP00103570A EP1031663B1 EP 1031663 B1 EP1031663 B1 EP 1031663B1 EP 00103570 A EP00103570 A EP 00103570A EP 00103570 A EP00103570 A EP 00103570A EP 1031663 B1 EP1031663 B1 EP 1031663B1
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EP
European Patent Office
Prior art keywords
ring
cover
wedge
manhole
height
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.)
Expired - Lifetime
Application number
EP00103570A
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German (de)
French (fr)
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EP1031663A2 (en
EP1031663A3 (en
Inventor
Gottfried Schwarz
Walter Schwarz
Eugen Ebner
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19932166A external-priority patent/DE19932166A1/en
Application filed by Individual filed Critical Individual
Publication of EP1031663A2 publication Critical patent/EP1031663A2/en
Publication of EP1031663A3 publication Critical patent/EP1031663A3/en
Application granted granted Critical
Publication of EP1031663B1 publication Critical patent/EP1031663B1/en
Anticipated expiration legal-status Critical
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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
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination

Definitions

  • the invention relates to a device for covering shafts, in particular shafts in streets and the like, according to the preamble of claim 1.
  • cover parts provided by manhole covers are often too high or too low.
  • the adjusting device which is formed by compensating rings
  • the height of the cover formed as a cover member can be adjusted.
  • the road level and / or shaft level changes by a few millimeters, especially on busy roads.
  • problems are also mortar joints between the balancing rings, as they do not withstand the constant vibrations caused by the traffic.
  • the mortar joints are exposed to a considerable risk of frost, so that they weather relatively quickly. Therefore, the fixtures must be adjusted at certain intervals to the respective street level, which is associated with considerable costs.
  • Another disadvantage is that all built-in parts in the road surfaces when installing such coverings are extremely hindering. For example, the internals when driving over paving machines, especially in an asphalt pavement that this has significant flaws. Even when driving over the internals with compaction equipment, such as rollers, it may come to bumps in the pavement.
  • a manhole cover is arranged, which lies on a receiving sleeve.
  • Spindles are provided below the manhole cover, which with a lower dome-shaped end in an annular groove of an annular Support frame protrude.
  • the receiving sleeve is arranged height adjustable.
  • This device is complex and expensive due to their large number of items.
  • the groove in the support frame must be adapted very precisely to the dome-shaped end of the spindles.
  • the manhole cover can be located underneath the road surface only with relatively great effort and exposed.
  • Covering devices are also known (EP-A-0 485 649) in which threaded rods are secured to the underside of a radially inwardly directed flange of a frame surrounding the cover. The threaded rods protrude into recesses in the front of the shaft.
  • the invention has the object of providing the generic device in such a way that the cover can be set in a structurally simple and cost-effective manner in height and / or inclination.
  • the cover is supported on the frame, which rests loosely on the head of the screw. Therefore, a special shape of the frame is not required. In particular, the assembly of the device is facilitated because an accurate installation position of the frame with respect to the screw is not required.
  • the cover can be easily put on the frame. When mounting the cover must not be paid to a precise installation position, since due to the surrounding frame, the cover can be placed in any position on the frame.
  • the set screw is supported in the bearing sleeve over a large axial length, so that the bending stress of the screw is low and there is no risk that the screw and / or the bearing sleeve deformed inadmissible under the harsh operating conditions or even damaged. With the lock nut, the set screw is properly secured in the respective position.
  • the cover device 1 is used to cover a shaft 2, which is mounted below a road surface 3 in a substructure 4, preferably a gravel substructure.
  • the covering device 1 consists of a centering receptacle 5 and a lid 6, which has a transmitting and / or receiving unit 7.
  • the centering 5 is annular. It has an annular shoulder 8, which protrudes with its cylindrical portion 10 in the annular shaft 2 and rests against the inside 9.
  • the cylinder section 10 has a thickness and length which amount to approximately one third to one quarter of the thickness or the length of the centering seat 5.
  • the cover 6 has a bottom 11 with a peripheral edge 12 which rests on the circumference of the centering 5. On its front side 13 of the lid bottom 11 is located.
  • the centering 5 has larger inner and outer diameter than the cylindrical portion 10 which forms the centering, with which the centering 5 is centered relative to the shaft 2.
  • the projection 17 has in the center a recess in which the sensor 7 designed as transmitting and / or receiving unit is provided.
  • a sensor search device 18 is provided, which is advantageously provided on a cutting device designed as a milling device with a milling unit 19. It has a milling tool 20 which is rotatably driven by a drive 21. In addition, the milling unit 19 can be rotated about the axis 25, which is spaced from the axis of rotation 23 of the milling tool 20. In order to expose the lid 6, the milling unit 19 is moved with the sensor device 18 on the pavement 3. With the sensor detector 18, the position of the sensor 7 can be determined exactly.
  • the position of the milling unit 19 is determined by the position of the sensor 7 for the subsequent milling process. It is aligned so that the axis of rotation 25 of the milling unit 19 is at the height of the sensor 7. Then the milling unit 20 is rotatably driven by the drive 21. Simultaneously, the milling tool 20 is moved circumferentially about the axis 25 so that it mills along the edge of the lid 6 in the pavement 3 an annular groove. The remaining part of the road surface 3 is removed, so that the lid 6 is exposed. Depending on the thickness of the road surface 3, the milling unit 19 is adjusted in height (arrow 24), so that the milling tool 20 can reach the lid 6.
  • the milling device can for exposing the lid 6 also designed as a cutting device (not shown) separating device be provided.
  • the cutting tool of this separator is formed by a water jet or a laser beam, which are moved circumferentially on a circle around the tool axis. The water or laser beam cuts along the edge of the lid 6, the annular groove in the pavement, so that the cover 6 can be easily exposed.
  • the cover 6 may be made entirely of metal, so that it can be detected under the road surface 3 from the search device 18, which is designed so that it can detect metallic materials. It is also possible to design the sensor 7 as a single-line device, for example as a portable search device. With him, the lying under the pavement 3 cover 6 can be securely detected, so that then the located above the cover 6 part of the pavement 3 can be removed. In the ways described, the cover 6 can be easily and quickly found and exposed even after many years.
  • an adjusting device 27 is provided between the shaft 2 and the cover 6a, with which the cover 6a can be adjusted in height and inclination.
  • the adjusting device 27 is surrounded substantially over its entire height by a guide cylinder 28 which rests with its lower edge 29 on a support ring 30 of the adjusting device 27.
  • the support ring 30 rests on the end face 31 of the shaft 2 and is slightly wider than the shaft wall, on which it protrudes on both sides.
  • the support ring 30 has a plurality of circumferentially preferably at the same distance one behind the other lying openings 32 into which in each case a bearing sleeve 33 projects with a (not shown) tapered shaft portion, which is advantageously welded in the openings 33.
  • the vertically arranged bearing sleeves 33 have an internal thread 35, in each of which an adjusting screw 36 is screwed.
  • the screws 36 have screw heads 39 with a preferably crowned end face 40.
  • On these end faces 40 is a preferably made of galvanized steel existing adjusting 41, which is like the screws 36 part of the adjusting device 27.
  • the adjusting ring 41 has approximately the same dimensions as the support ring 30; only its ring width is slightly smaller.
  • On the adjusting ring 41 is the interposition of a damping ring 42 of the cover 6a.
  • the damping ring 42 is advantageously made of neoprene. He is relatively thin and has a slightly smaller outer diameter than the adjusting ring 41 and slightly larger clear width than this.
  • the lid 6a has approximately the same outer diameter as the adjusting ring 41st
  • Its wall thickness corresponds to the distance between the outer casing 43 of the support ring 30 and the outer shell 44 of the bearing sleeve 33.
  • the guide cylinder 28 extends from the support ring 30 over the entire height of the adjusting device 27th and to slightly more than over half the height of the lid 6a.
  • On the upper edge 44 of the guide cylinder 28 is formed as an O-ring seal 45.
  • a potting compound 46 is provided which extends axially beyond the bearing ring 30 and engages behind this from below.
  • the potting compound 46 seals the cover 6a and the adjusting device 27 with the guide cylinder 28 with respect to the preferably consisting of gravel base 4 and the pavement 3, which surround the shaft 2 and the cover 6a.
  • the adjustment 27 arbitrary inclinations and differences in height of the lid 6a compared to the pavement 3 easy and be compensated quickly.
  • only one or more screws 36 are rotated in the corresponding direction in the associated bearing sleeve 33.
  • the inclination of the lid 6a can be set arbitrarily.
  • the cover 6a can be easily and quickly adapted to the respective changes in the height level of the covering 3 at any time.
  • the screws 36 a continuous adjustment of the lid 6a is possible.
  • the adjustment range may be, for example, 7 cm, from a central position of the screws 36 then 3.5 cm down and 3.5 cm can be adjusted upwards.
  • the lid 6a can thus be easily adjusted so that its top is flush with the top of the pavement 3.
  • the potting compound 46 is also introduced so that it completely fills the space between the shaft 2, the guide cylinder 28 and the lid 6 a and its top is flush with the top of the pavement 3.
  • FIG. 3 differs from the embodiment described above only in that the bearing sleeves 33 b are arranged sunk directly into the wall of the shaft 2.
  • the support ring 30 for the bearing sleeves of FIG. 2 is therefore not provided in this embodiment.
  • the screws 36b are secured as in the previously described embodiment with the nuts 38b relative to the shaft 2, so that the screws 36b can not be inadvertently rotated in the set position.
  • the nuts 38b are screwed back when the adjusting screws 36b need to be adjusted. After the adjustment, the nuts 38b are again turned back so far that they rest against the front side of the shaft 2 and secure the adjusting screws 36b in the new position.
  • the screw heads 39b of the screws 36b have crowned end faces 40b.
  • the adjusting ring 41 b which carries the lid 6b.
  • the cover 6b can be adjusted in a simple manner, both in height and in inclination, in the same way as the cover 6a.
  • a guide cylinder and the potting compound are not provided.
  • the cover 6b is located directly on the pavement 3.
  • the guide cylinder may be provided in accordance with the previous embodiment.
  • FIG. 4 differs from the embodiment of FIG. 3 essentially only in that the bed screws 36c are screwed into a bearing sleeve 33c, which are anchored in the lid 6c.
  • the screws 36c are clamped with the nuts 38c relative to the lid 6c.
  • the screw heads 39 c have, as in the embodiment according to FIGS. 2 and 3, spherical end faces 40 c, with which they are supported on the support ring 30 c.
  • the support ring 30c is corresponding to the support ring 30 of FIG. 2 on the end face 31 of the shaft 2.
  • the adjusting screws 36c are thus arranged on the head in comparison to the previous embodiment.
  • FIG. 5 In the embodiment of FIG. 5 is located on the shaft 2 of the support ring 30d, are arranged on the instead of the screws piston-cylinder devices 36d. They are attached with their cylinder 47 on the support ring 30d. Their piston rods 48 protrude upwards from the cylinders 47 and carry the cover 6d. For height and tilt adjustment of the cover 6d, the piston rods 48 are extended or retracted. With this adjusting device 27d, the cover 6d can be adjusted continuously in height and in inclination, in accordance with the preceding embodiments, so that the cover top 50 lies with the road surface 3 at the same level. In order to adjust the inclination of the lid 6d, the piston-cylinder devices 36d are operated independently. The cover 6d is directly on the pavement 3.
  • a guide cylinder may be provided.
  • the embodiment according to FIG. 6 differs from the embodiment according to FIG. 2 in that the adjusting device 27e preferably has two superimposed wedges 51 and 52 between the bearing ring 30e and the adjusting ring 41e instead of the adjusting screws.
  • the lying on the support ring 30e lower wedges 52 are arranged so that their narrow end face 53 facing outward in the direction of the base 4 and the overlying wedges 51 with their wide end face 54 to the outside.
  • a plurality of wedge pairs 51, 52 arranged at a distance from one another are provided on the shaft 2 over the circumference of the cover 6e. With the wedges 51, 52, the lid 6e can also be adjusted continuously in height and in inclination.
  • two adjusting rings 55 and 56 screwed one above the other and screwed together, are provided as the adjusting device 27f, whose axes run vertically and which lie coaxially with one another.
  • the lower collar 55 has an L-shaped cross-section and lies with its horizontal leg 57 on the end face 58 of the shaft 2. Its vertical leg 59 rests with its outer circumferential surface 60 on the inside 61 of the substructure 4.
  • the cylinder part 59 of the adjusting ring 55 is provided with thread 67.
  • the upper, in cross-section also L-shaped adjusting ring 56 is provided on its cylinder part 64 on the outside with a thread 68.
  • the upper horizontal ring portion 62 of the adjusting ring 56 carries the cover 6f.
  • the threaded rings 67, 68 engaged with adjusting rings 55, 56 can be adjusted by turning continuously against each other.
  • the ring portion 62 of the upper collar 56 has an outer diameter which is smaller than the inner diameter of the road surface 3. This ensures that the collar 56 can be easily rotated.
  • the cover 6f is located on the road surface. 3 at. But it is also possible to use according to the embodiment of FIG. 2, a guide cylinder. With the adjusting ring 56, the cover 6f can be adjusted only in height.
  • the embodiment acc. Fig. 8 corresponds substantially to the embodiment of Fig. 2.
  • the adjusting device 27g is also within the guide cylinder 28g, which is supported on the support ring 30g.
  • the adjusting ring 41g is on the screws 36g with a spherically formed end face 40g.
  • the support ring 30g is set back radially relative to the inner wall 70 of the shaft 2.
  • a locking ring 72 (Fig. 9 and 10). He has on the periphery of an upper and a lower shoulder 73 and 74. With the lower shoulder 74 of the retaining ring 72 is located on the front side of the shaft 2.
  • the circlip 72 bears with a circumferential axial projection 77 on the inner surface 70 of the shaft 2.
  • a protective cover 76 with its edge 75 on.
  • the retaining ring 72 consists of two equal half-rings, so that it can be easily inserted into the shaft opening and mounted there.
  • the protective cover 76 has a central opening 79 into which a tool can be inserted for removing or inserting the lid.
  • the protective cover 76 prevents dirt, impurities and the like from falling into the shaft.
  • the embodiment acc. Figs. 13 to 15 differs from the embodiment described above substantially only in that below the adjusting 27h and their Auflageringes 30h and the shaft top 31h at least one, preferably two superposed wedge rings 80 and 81 are arranged. With them, the inclination of the lid 6h can be adjusted to adapt to different gradients of the road easily and quickly and at a relatively large inclination angle.
  • the two wedge rings 80 and 81 are preferably identical. They can be set against each other twisted to set different inclination angle of the lid 6h. For this purpose, the wedge rings 80, 81 latching members and latching opposing members 82 and 83. As shown in FIGS.
  • the wedge ring 80 has a nearly semicircular annular groove 84 near its edge for weight reduction. It is advantageous in the ring half 80 ', which has the larger ring thickness. The width of the annular groove 84 is approximately equal to half the groove depth.
  • the wedge ring 80 has two diametrically opposed locking members 82, which are provided at a short distance from the ends 89 and 90 of the annular groove 80.
  • the locking members 82 are formed as knob-like projections. They protrude over the same top 91 of the wedge ring 80, in which the annular groove 84 is located. In the other ring top 92 formed as a recess detent opposing members 83 are provided.
  • locking members 83 Their width and depth is adapted to the locking members 83 so that they fit into the locking position of the wedge rings 80 and 81 in a form-fitting manner in the locking openings.
  • six locking counter-members 83 are provided, which are each arranged at an angular distance of 60 °.
  • the keel ring 80 tapers in a wedge shape from one edge 85 to the opposite edge 86.
  • the edge 85 of the wedge ring has its greatest height of, for example, about 50 mm.
  • the opposite edge 86 has a height of, for example, about 10 mm.
  • the lower wedge ring 81 is advantageous with the interposition of a damping ring 87 on the end face 31h of the shaft 2.
  • the device according to FIG. 13 can also be designed such that exclusively the two wedge rings 80 and 81 are provided for inclination adjustment of the cover 6h, ie the adjusting device 27h is omitted. Further, if necessary, further, the wedge rings 80, 81 corresponding wedge rings may be provided, so that an even greater tilt adjustment of the lid is possible.
  • the wedge rings 80, 81 may also be formed so that their locking members are provided in another, for example, smaller angular distance than 60 ° to allow even more accurate adjustment of the inclination of the lid to the respective slope.

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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)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Soil Working Implements (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Emergency Lowering Means (AREA)
  • Greenhouses (AREA)
  • Catching Or Destruction (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The manhole cover has an adjusting device with lifting part, for height/inclination adjustment. The lifting part is (36) is a height-adjustable regulating screw. The cover may have several regulating screws at even relative distances, which are pref. located in a holder (33) formed by a bearing sleeve. The sleeve is fastened pref. welded to a support ring (30). The holder is located in the shaft (2) or in the cover. The screw supports itself with its head (39) on a supporting regulator ring (41). The cover has an associated sensor and a sensor locator, positioned on an uncovering device with tool.

Description

Die Erfindung betrifft eine Vorrichtung zum Abdecken von Schächten, insbesondere Schächten in Straßen und dergleichen, nach dem Oberbegriff des Anspruches 1.The invention relates to a device for covering shafts, in particular shafts in streets and the like, according to the preamble of claim 1.

Besonders bei Asphaltbelägen liegen darin vorgesehene Abdeckteile von Schachtabdeckungen oft zu hoch oder zu niedrig. Mit der Verstelleinrichtung, die durch Ausgleichsringe gebildet wird, kann die Höhe des als Deckel ausgebildeten Abdeckteiles eingestellt werden. Im Laufe der Zeit ändert sich auch das Fahrbahnniveau und/oder das Schachtniveau um wenige Millimeter, vor allem bei stark befahrenen Straßen. Probleme stellen auch Mörtelfugen zwischen den Ausgleichsringen dar, da sie den ständigen Erschütterungen durch den Straßenverkehr nicht standhalten. Außerdem sind die Mörtelfugen einer erheblichen Frostgefahr ausgesetzt, so daß sie relativ schnell verwittern. Daher müssen die Einbauten in bestimmten Zeitabständen an das jeweilige Straßenniveau angeglichen werden, was mit erheblichen Kosten verbunden ist. Nachteilig ist ferner, daß sämtliche Einbauteile in den Straßenbelägen beim Einbau solcher Beläge äußerst hinderlich sind. Zum Beispiel führen die Einbauten beim Überfahren mit Straßenfertigungsmaschinen besonders bei einem Asphaltbelag dazu, daß dieser erhebliche Fehlerstellen aufweist. Auch beim Überfahren der Einbauten mit Verdichtungsgeräten, wie beispielsweise Walzen, kann es zu Unebenheiten im Straßenbelag kommen.Particularly in the case of asphalt pavements, cover parts provided by manhole covers are often too high or too low. With the adjusting device, which is formed by compensating rings, the height of the cover formed as a cover member can be adjusted. Over time, the road level and / or shaft level changes by a few millimeters, especially on busy roads. Problems are also mortar joints between the balancing rings, as they do not withstand the constant vibrations caused by the traffic. In addition, the mortar joints are exposed to a considerable risk of frost, so that they weather relatively quickly. Therefore, the fixtures must be adjusted at certain intervals to the respective street level, which is associated with considerable costs. Another disadvantage is that all built-in parts in the road surfaces when installing such coverings are extremely hindering. For example, the internals when driving over paving machines, especially in an asphalt pavement that this has significant flaws. Even when driving over the internals with compaction equipment, such as rollers, it may come to bumps in the pavement.

Bei einer bekannten Vorrichtung (DE 42 30 006 C2) ist unterhalb der einzubauenden Schicht ein Schachtdeckel angeordnet, der auf einer Aufnahmehülse liegt. Unterhalb des Schachtdeckels sind Spindeln vorgesehen, die mit einem unteren kalottenförmigen Ende in eine Ringnut eines ringförmigen Tragrahmens ragen. Auf den Spindeln ist die Aufnahmehülse höhenverstellbar angeordnet. Diese Vorrichtung ist infolge ihrer Vielzahl von Einzelteilen aufwendig und teuer ausgebildet. Außerdem muß die Nut im Tragrahmen sehr genau an das kalottenförmige Ende der Spindeln angepaßt sein. Schließlich besteht die Gefahr, daß die miteinander in Eingriff stehenden Gewinde der Spindeln und der Aufnahmehülse beschädigt werden und dadurch ein leichtgängiges Einstellen des Schachtdeckels auf die gewünschte Höhe beeinträchtigt wird. Nachteilig ist ferner, daß der Schachtdeckel unterhalb des Straßenbelages nur mit relativ großem Aufwand geortet und freigelegt werden kann.In a known device (DE 42 30 006 C2) below the layer to be incorporated, a manhole cover is arranged, which lies on a receiving sleeve. Spindles are provided below the manhole cover, which with a lower dome-shaped end in an annular groove of an annular Support frame protrude. On the spindles, the receiving sleeve is arranged height adjustable. This device is complex and expensive due to their large number of items. In addition, the groove in the support frame must be adapted very precisely to the dome-shaped end of the spindles. Finally, there is a risk that the mutually engaging threads of the spindles and the receiving sleeve will be damaged and thereby smooth adjustment of the manhole cover is affected to the desired height. A further disadvantage is that the manhole cover can be located underneath the road surface only with relatively great effort and exposed.

Bei der gattungsgemäßen Vorrichtung (DE 41 27 806 A) sitzt auf dem Schacht eine Auflage auf, die scheibenförmig ausgebildet ist und auf der drei Muttern festgeschweißt sind, durch welche Stellschrauben geschraubt sind. An die Unterseite der Scheibe sind Spindelkreisrohre angesetzt, die eine horizontale Verschiebung der Auflage auf dem Einstiegsschacht verhindern sollen. Die Stellschrauben ragen in die Spindelkreisrohre. Da die Muttern nur sehr geringe axiale Länge haben, werden die Stellschrauben im Vergleich zu ihrer Länge nur über ein sehr kurzes Stück in den Muttern abgestützt. Darum sind die Stellschrauben einer hohen Biegebelastung im Einsatz ausgesetzt. Die oberen Enden der Stellschrauben sind im Durchmesser abgesetzt, wodurch Schulterflächen gebildet werden, auf denen das Abdeckteil aufliegt. Aufgrund dieser Gestaltung der Stellschrauben bedarf das Abdeckteil einer besonderen konstruktiven Gestaltung.In the generic device (DE 41 27 806 A) sits on the shaft on a support which is disc-shaped and are welded to the three nuts, are screwed by which screws. At the bottom of the disc spindle pipe tubes are set to prevent a horizontal displacement of the support on the manhole. The set screws protrude into the spindle circuit tubes. Since the nuts have only very small axial length, the screws are supported in comparison to their length only a very short piece in the nuts. Therefore, the set screws are subjected to a high bending load during use. The upper ends of the screws are offset in diameter, whereby shoulder surfaces are formed, on which the cover rests. Due to this design of the screws requires the cover of a special structural design.

Es sind auch Abdeckvorrichtungen bekannt (EP-A-0 485 649), bei denen Gewindestangen an der Unterseite eines radial nach innen gerichteten Flansches eines den Deckel umgebenden Rahmens befestigt sind. Die Gewindestangen ragen in Vertiefungen in der Stirnseite des Schachtes.Covering devices are also known (EP-A-0 485 649) in which threaded rods are secured to the underside of a radially inwardly directed flange of a frame surrounding the cover. The threaded rods protrude into recesses in the front of the shaft.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Vorrichtung so auszubilden, daß das Abdeckteil auf konstruktiv einfache und kostengünstige Weise in der Höhe und/oder Neigung eingestellt werden kann.The invention has the object of providing the generic device in such a way that the cover can be set in a structurally simple and cost-effective manner in height and / or inclination.

Diese Aufgabe wird bei der gattungsgemäßen Vorrichtung erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruches 1 gelöst.This object is achieved in the generic device according to the invention with the characterizing features of claim 1.

Bei der erfindungsgemäßen Vorrichtung wird das Abdeckteil auf dem Rahmen abgestützt, der lose auf dem Kopf der Stellschraube aufliegt. Darum ist eine besondere Formgebung des Rahmens nicht erforderlich. Insbesondere wird die Montage der Vorrichtung erleichtert, da eine genaue Einbaulage des Rahmens in bezug auf die Stellschraube nicht erforderlich ist. Das Abdeckteil läßt sich einfach auf den Rahmen auflegen. Bei der Montage des Abdeckteiles muß nicht auf eine genaue Einbaulage geachtet werden, da aufgrund des umlaufenden Rahmens das Abdeckteil in jeder Lage auf den Rahmen aufgesetzt werden kann. Die Stellschraube wird in der Lagerhülse über eine große axiale Länge abgestützt, so daß die Biegebeanspruchung der Stellschraube gering ist und nicht die Gefahr besteht, daß die Stellschraube und/oder die Lagerhülse bei den rauhen Einsatzbedingungen unzulässig verformt oder gar beschädigt werden. Mit der Sicherungsmutter wird die Stellschraube in der jeweiligen Position einwandfrei gesichert.In the device according to the invention, the cover is supported on the frame, which rests loosely on the head of the screw. Therefore, a special shape of the frame is not required. In particular, the assembly of the device is facilitated because an accurate installation position of the frame with respect to the screw is not required. The cover can be easily put on the frame. When mounting the cover must not be paid to a precise installation position, since due to the surrounding frame, the cover can be placed in any position on the frame. The set screw is supported in the bearing sleeve over a large axial length, so that the bending stress of the screw is low and there is no risk that the screw and / or the bearing sleeve deformed inadmissible under the harsh operating conditions or even damaged. With the lock nut, the set screw is properly secured in the respective position.

Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und den Zeichnungen.Further features of the invention will become apparent from the other claims, the description and the drawings.

Die Erfindung wird anhand mehrerer in den Zeichnungen dargestellter Ausführungsbeispiele näher erläutert. Es zeigen

Fig. 1
im Vertikalschnitt eine nicht vom Schutzumfang erfaßte Abdeckvorrichtung,
Fig. 2
im Vertikalschnitt eine erfindungsgemäße Abdeckvorrichtung,
Fig. 3 bis Fig. 7
jeweils im Vertikalschnitt nicht in den Schutzumfang fallende Abdeckvorrichtungen,
Fig. 8
im Vertikalschnitt eine weitere Ausführungsform einer erfindungsgemäßen Abdeckvorrichtung,
Fig. 9
eine Verschiebesicherung der Abdeckvorrichtung gemäß Fig. 8 in Draufsicht,
Fig. 10
einen Schnitt längs der Linie X-X in Fig. 9,
Fig. 11
in Draufsicht einen Teil eines Schutzteiles der Abdeckvorrichtung gemäß Fig. 8.
Fig. 12
den Schutzteil gemäß Fig. 11 im Axialschnitt,
Fig. 13
im Axialschnitt die erfindungsgemäße Abdeckvorrichtung mit einer Neigungsverstelleinrichtung,
Fig. 14
einen Keilring der Neigungsverstelleinrichtung gemäß Fig. 13 in Draufsicht,
Fig. 15
den Keilring im Schnitt längs der Linie XV-XV in Fig. 14.
The invention will be explained in more detail with reference to several embodiments shown in the drawings. Show it
Fig. 1
in vertical section a not covered by the scope covering device,
Fig. 2
in vertical section a covering device according to the invention,
Fig. 3 to Fig. 7
each in vertical section not covered in the scope covering devices,
Fig. 8
in vertical section a further embodiment of a covering device according to the invention,
Fig. 9
a displacement protection of the cover device of FIG. 8 in plan view,
Fig. 10
a section along the line XX in Fig. 9,
Fig. 11
in plan view a part of a protective part of the cover of FIG. 8.
Fig. 12
the protective part according to FIG. 11 in axial section,
Fig. 13
in axial section, the covering device according to the invention with a tilt adjustment,
Fig. 14
a wedge ring of the tilt adjustment of FIG. 13 in plan view,
Fig. 15
the wedge ring in section along the line XV-XV in Fig. 14.

Die Abdeckvorrichtung 1 gemäß Fig. 1 dient zum Abdecken eines Schachtes 2, der unterhalb eines Straßenbelages 3 in einem Unterbau 4, vorzugsweise einem Schotterunterbau, angebracht ist. Die Abdeckvorrichtung 1 besteht aus einer Zentrieraufnahme 5 und einem Deckel 6, der eine Sende- und/oder Empfangseinheit 7 aufweist.The cover device 1 according to FIG. 1 is used to cover a shaft 2, which is mounted below a road surface 3 in a substructure 4, preferably a gravel substructure. The covering device 1 consists of a centering receptacle 5 and a lid 6, which has a transmitting and / or receiving unit 7.

Die Zentrieraufnahme 5 ist ringförmig ausgebildet. Sie weist eine Ringschulter 8 auf, die mit ihrem zylindrischen Abschnitt 10 in den ringförmigen Schacht 2 ragt und an dessen Innenseite 9 anliegt. Der Zylinderabschnitt 10 hat eine Dicke und Länge, die etwa nur ein Drittel bis ein Viertel der Dicke bzw. der Länge der Zentrieraufnahme 5 betragen. Der Deckel 6 hat einen Boden 11 mit einem umlaufenden Rand 12, der am Umfang der Zentrieraufnahme 5 anliegt. Auf ihrer Stirnseite 13 liegt der Deckelboden 11 auf. Die Zentrieraufnahme 5 hat größeren Innen- und Außendurchmesser als der zylindrische Abschnitt 10, der den Zentrierteil bildet, mit dem die Zentrieraufnahme 5 gegenüber dem Schacht 2 zentriert wird. Der zylindrische Deckelrand 12, der mit seiner inneren Mantelfläche 15 an der äußeren Mantelfläche 14 der Zentieraufnahme 5 anliegt, erstreckt sich bis in Höhe der Stirnseite 16 des Schachtes 2 und ist nur etwa halb so dick wie der Deckelboden 11. Er hat an der Innenseite einen zentralen zylindrischen Ansatz 17, dessen Durchmesser im Vergleich zum Deckelboden 11 um ein Mehrfaches kleiner ist. Der Ansatz 17 weist mittig eine Ausnehmung auf, in der die als Sensor 7 ausgebildete Sende- und/oder Empfangseinheit vorgesehen ist.The centering 5 is annular. It has an annular shoulder 8, which protrudes with its cylindrical portion 10 in the annular shaft 2 and rests against the inside 9. The cylinder section 10 has a thickness and length which amount to approximately one third to one quarter of the thickness or the length of the centering seat 5. The cover 6 has a bottom 11 with a peripheral edge 12 which rests on the circumference of the centering 5. On its front side 13 of the lid bottom 11 is located. The centering 5 has larger inner and outer diameter than the cylindrical portion 10 which forms the centering, with which the centering 5 is centered relative to the shaft 2. The cylindrical lid edge 12, which rests with its inner circumferential surface 15 on the outer lateral surface 14 of the Zentieraufnahme 5, extends up to the level of End 16 of the shaft 2 and is only about half as thick as the lid bottom 11. He has on the inside a central cylindrical extension 17 whose diameter is smaller compared to the lid bottom 11 by a multiple. The projection 17 has in the center a recess in which the sensor 7 designed as transmitting and / or receiving unit is provided.

Zum Auffinden des unter dem Straßenbelag 3 befindlichen Deckels 6 ist ein Sensorsuchgerät 18 vorgesehen, das vorteilhaft an einer als Fräsvorrichtung ausgebildeten Trennvorrichtung mit einem Fräsaggregat 19 vorgesehen ist. Es hat ein Fräswerkzeug 20, das über einen Antrieb 21 drehbar angetrieben wird. Außerdem kann das Fräsaggregat 19 um die Achse 25 gedreht werden, die mit Abstand zur Drehachse 23 des Fräswerkzeuges 20 liegt. Um den Deckel 6 freizulegen, wird das Fräsaggregat 19 mit dem Sensorsuchgerät 18 über den Straßenbelag 3 bewegt. Mit dem Sensorsuchgerät 18 kann die Lage des Sensors 7 genau bestimmt werden.In order to find the cover 6 located under the road surface 3, a sensor search device 18 is provided, which is advantageously provided on a cutting device designed as a milling device with a milling unit 19. It has a milling tool 20 which is rotatably driven by a drive 21. In addition, the milling unit 19 can be rotated about the axis 25, which is spaced from the axis of rotation 23 of the milling tool 20. In order to expose the lid 6, the milling unit 19 is moved with the sensor device 18 on the pavement 3. With the sensor detector 18, the position of the sensor 7 can be determined exactly.

Da der Sensor 7 mittig am Deckel 6 vorgesehen ist, wird durch die Lage des Sensors 7 die Position des Fräsaggregates 19 für den nachfolgenden Fräsvorgang bestimmt. Es wird so ausgerichtet, daß die Drehachse 25 des Fräsaggregates 19 auf der Höhe des Sensor 7 liegt. Dann wird das Fräsaggregat 20 mit dem Antrieb 21 drehbar angetrieben. Gleichzeitig wird das Fräswerkzeug 20 um die Achse 25 umlaufend bewegt, so daß es längs des Randes des Deckels 6 im Straßenbelag 3 eine Ringnut fräst. Der stehenbleibende Teil des Straßenbelages 3 wird entfernt, so daß der Deckel 6 freigelegt ist. Je nach Dicke des Straßenbelages 3 wird das Fräsaggregat 19 in der Höhe (Pfeil 24) verstellt, so daß das Fräswerkzeug 20 bis zum Dekkel 6 gelangen kann.Since the sensor 7 is provided centrally on the cover 6, the position of the milling unit 19 is determined by the position of the sensor 7 for the subsequent milling process. It is aligned so that the axis of rotation 25 of the milling unit 19 is at the height of the sensor 7. Then the milling unit 20 is rotatably driven by the drive 21. Simultaneously, the milling tool 20 is moved circumferentially about the axis 25 so that it mills along the edge of the lid 6 in the pavement 3 an annular groove. The remaining part of the road surface 3 is removed, so that the lid 6 is exposed. Depending on the thickness of the road surface 3, the milling unit 19 is adjusted in height (arrow 24), so that the milling tool 20 can reach the lid 6.

Anstelle der Fräsvorrichtung kann zum Freilegen des Deckels 6 auch eine als Schneidvorrichtung ausgebildete (nicht dargestellte) Trennvorrichtung vorgesehen sein. Das Schneidwerkzeug dieser Trennvorrichtung ist durch einen Wasserstrahl oder einen Laserstrahl gebildet, die auf einem Kreis um die Werkzeugachse umlaufend bewegt werden. Auch bei dieser Trennvorrichtung liegt dessen Drehachse auf Höhe des Sensors 7 des Deckels 6. Der Wasser- bzw. Laserstrahl schneidet längs des Randes des Deckels 6 die Ringnut in den Straßenbelag, so daß der Deckel 6 einfach freigelegt werden kann.Instead of the milling device can for exposing the lid 6 also designed as a cutting device (not shown) separating device be provided. The cutting tool of this separator is formed by a water jet or a laser beam, which are moved circumferentially on a circle around the tool axis. The water or laser beam cuts along the edge of the lid 6, the annular groove in the pavement, so that the cover 6 can be easily exposed.

Anstelle des Sensors 7 kann der Deckel 6 insgesamt aus Metall bestehen, so daß er unter dem Straßenbelag 3 vom Suchgerät 18 erkannt werden kann, das so ausgebildet ist, daß es metallische Werkstoffe erfassen kann. Es ist auch möglich, den Sensor 7 als Einzeigerät auszubilden, beispielsweise als tragbares Suchgerät. Mit ihm läßt sich der unter dem Straßenbelag 3 liegende Deckel 6 sicher erfassen, so daß anschließend der oberhalb des Deckels 6 befindliche Teil des Straßenbelages 3 entfernt werden kann. In den beschriebenen Weisen läßt sich der Deckel 6 auch noch nach vielen Jahren einfach und schnell finden und freilegen.Instead of the sensor 7, the cover 6 may be made entirely of metal, so that it can be detected under the road surface 3 from the search device 18, which is designed so that it can detect metallic materials. It is also possible to design the sensor 7 as a single-line device, for example as a portable search device. With him, the lying under the pavement 3 cover 6 can be securely detected, so that then the located above the cover 6 part of the pavement 3 can be removed. In the ways described, the cover 6 can be easily and quickly found and exposed even after many years.

Bei der Ausführungsform gemäß Fig. 2 ist zwischen dem Schacht 2 und dem Deckel 6a eine Verstelleinrichtung 27 vorgesehen, mit der der Deckel 6a in der Höhe und Neigung verstellt werden kann. Die Verstelleinrichtung 27 ist im wesentlichen über ihre gesamte Höhe von einem Führungszylinder 28 umgeben, der mit seinem unteren Rand 29 auf einem Auflagering 30 der Verstelleinrichtung 27 aufliegt. Der Auflagering 30 liegt auf der Stirnfläche 31 des Schachtes 2 auf und ist etwas breiter als die Schachtwand, über die er beidseitig vorsteht. Der Auflagering 30 weist mehrere in Umfangsrichtung vorzugsweise mit gleichem Abstand hintereinander liegende Öffnungen 32 auf, in die jeweils eine Lagerhülse 33 mit einem (nicht dargestellten) verjüngten Schaftteil ragt, der vorteilhaft in den Öffnungen 33 verschweißt ist. Die vertikal angeordneten Lagerhülsen 33 haben ein Innengewinde 35, in das jeweils eine Stellschraube 36 geschraubt ist.In the embodiment according to FIG. 2, an adjusting device 27 is provided between the shaft 2 and the cover 6a, with which the cover 6a can be adjusted in height and inclination. The adjusting device 27 is surrounded substantially over its entire height by a guide cylinder 28 which rests with its lower edge 29 on a support ring 30 of the adjusting device 27. The support ring 30 rests on the end face 31 of the shaft 2 and is slightly wider than the shaft wall, on which it protrudes on both sides. The support ring 30 has a plurality of circumferentially preferably at the same distance one behind the other lying openings 32 into which in each case a bearing sleeve 33 projects with a (not shown) tapered shaft portion, which is advantageously welded in the openings 33. The vertically arranged bearing sleeves 33 have an internal thread 35, in each of which an adjusting screw 36 is screwed.

Auf jeder Stellschraube 36 sitzt eine Mutter 38, die auf der Lagerhülse 33 aufliegt und die Stellschraube gegen Verdrehen sichert. Die Schrauben 36 haben Schraubenköpfe 39 mit einer vorzugsweise balligen Stirnseite 40. Auf diesen Stirnflächen 40 liegt ein vorzugsweise aus verzinktem Stahl bestehender Verstellring 41, der wie die Stellschrauben 36 Teil der Verstelleinrichtung 27 ist. Der Verstellring 41 hat etwa gleiche Abmessungen wie der Auflagering 30; nur ist seine Ringbreite geringfügig kleiner. Auf dem Verstellring 41 liegt unter Zwischenlage eines Dämpfungsringes 42 der Deckel 6a auf. Der Dämpfungsring 42 besteht vorteilhaft aus Neopren. Er ist relativ dünn und hat etwas kleineren Außendurchmesser als der Verstellring 41 und etwas größere lichte Weite als dieser. Der Deckel 6a hat etwa gleichen Außendurchmesser wie der Stellring 41.On each screw 36 sits a nut 38 which rests on the bearing sleeve 33 and secures the screw against rotation. The screws 36 have screw heads 39 with a preferably crowned end face 40. On these end faces 40 is a preferably made of galvanized steel existing adjusting 41, which is like the screws 36 part of the adjusting device 27. The adjusting ring 41 has approximately the same dimensions as the support ring 30; only its ring width is slightly smaller. On the adjusting ring 41 is the interposition of a damping ring 42 of the cover 6a. The damping ring 42 is advantageously made of neoprene. He is relatively thin and has a slightly smaller outer diameter than the adjusting ring 41 and slightly larger clear width than this. The lid 6a has approximately the same outer diameter as the adjusting ring 41st

Auf dem Auflagering 30 steht der vorzugsweise aus verzinktem Stahl bestehende Führungszylinder 28. Seine Wandstärke entspricht dem Abstand zwischen dem Außenmantel 43 des Auflageringes 30 und dem Außenmantel 44 der Lagerhülse 33. Der Führungszylinder 28 erstreckt sich vom Auflagering 30 aus über die ganze Höhe der Verstelleinrichtung 27 und bis etwas mehr als über die halbe Höhe des Deckels 6a. Auf dem oberen Rand 44 des Führungszylinders 28 liegt eine als O-Ring ausgebildete Dichtung 45 auf. Über die ganze Höhe der Verstelleinrichtung 27 bzw. des Führungszylinders 28 und dem Deckel 6a ist eine Vergußmasse 46 vorgesehen, die sich axial bis über den Lagerring 30 erstreckt und diesen von unten hintergreift.Its wall thickness corresponds to the distance between the outer casing 43 of the support ring 30 and the outer shell 44 of the bearing sleeve 33. The guide cylinder 28 extends from the support ring 30 over the entire height of the adjusting device 27th and to slightly more than over half the height of the lid 6a. On the upper edge 44 of the guide cylinder 28 is formed as an O-ring seal 45. Over the entire height of the adjusting device 27 and the guide cylinder 28 and the cover 6a, a potting compound 46 is provided which extends axially beyond the bearing ring 30 and engages behind this from below.

Die Vergußmasse 46 dichtet den Deckel 6a und die Verstelleinrichtung 27 mit dem Führungszylinder 28 gegenüber dem vorzugsweise aus Schotter bestehenden Unterbau 4 und dem Straßenbelag 3 ab, die den Schacht 2 und den Deckel 6a umgeben.The potting compound 46 seals the cover 6a and the adjusting device 27 with the guide cylinder 28 with respect to the preferably consisting of gravel base 4 and the pavement 3, which surround the shaft 2 and the cover 6a.

Mit der Verstelleinrichtung 27 können beliebige Schräglagen und Höhendifferenzen des Deckels 6a gegenüber dem Straßenbelag 3 einfach und schnell ausgeglichen werden. Hierzu werden lediglich die eine oder weitere Stellschrauben 36 in entsprechender Richtung in der zugehörigen Lagerhülse 33 verdreht. Durch Verstellen der entsprechenden Stellschrauben 36 kann die Neigung des Deckels 6a beliebig eingestellt werden. Dadurch läßt sich der Deckel 6a jederzeit einfach und schnell an die jeweiligen Veränderungen im Höhenniveau des Belages 3 anpassen. Mit den Stellschrauben 36 ist eine stufenlose Einstellung des Deckels 6a möglich. Der Verstellbereich kann beispielsweise 7 cm betragen, wobei von einer Mittelstellung aus die Stellschrauben 36 dann 3,5 cm nach unten und 3,5 cm nach oben verstellt werden können. Der Deckel 6a läßt sich somit auf einfache Weise so einstellen, daß seine Oberseite bündig mit der Oberseite des Straßenbelages 3 liegt. Die Vergußmasse 46 wird ebenfalls so eingebracht, daß sie den Zwischenraum zwischen dem Schacht 2, dem Führungszylinder 28 und dem Deckel 6a vollständig ausfüllt und ihre Oberseite bündig mit der Oberseite des Straßenbelages 3 liegt.With the adjustment 27 arbitrary inclinations and differences in height of the lid 6a compared to the pavement 3 easy and be compensated quickly. For this purpose, only one or more screws 36 are rotated in the corresponding direction in the associated bearing sleeve 33. By adjusting the corresponding screws 36, the inclination of the lid 6a can be set arbitrarily. As a result, the cover 6a can be easily and quickly adapted to the respective changes in the height level of the covering 3 at any time. With the screws 36 a continuous adjustment of the lid 6a is possible. The adjustment range may be, for example, 7 cm, from a central position of the screws 36 then 3.5 cm down and 3.5 cm can be adjusted upwards. The lid 6a can thus be easily adjusted so that its top is flush with the top of the pavement 3. The potting compound 46 is also introduced so that it completely fills the space between the shaft 2, the guide cylinder 28 and the lid 6 a and its top is flush with the top of the pavement 3.

Die Ausführungsform gemäß Fig. 3 unterscheidet sich von der zuvor beschriebenen Ausführungsform lediglich dadurch, daß die Lagerhülsen 33b unmittelbar in der Wand des Schachtes 2 versenkt angeordnet sind. Der Auflagering 30 für die Lagerhülsen gemäß Fig. 2 ist darum bei dieser Ausführungsform nicht vorgesehen. Die Stellschrauben 36b sind wie bei der zuvor beschriebenen Ausführungsform mit den Muttern 38b gegenüber dem Schacht 2 gesichert, so daß die Stellschrauben 36b in der eingestellten Lage nicht unbeabsichtigt verdreht werden können. Wie bei der vorigen Ausführungsform werden die Muttern 38b zurückgeschraubt, wenn die Stellschrauben 36b verstellt werden müssen. Nach dem Verstellvorgang werden die Muttern 38b wieder so weit zurückgedreht, daß sie an der Stirnseite des Schachtes 2 anliegen und die Stellschauben 36b in der neuen Lage sichern. In weiterer Übereinstimmung mit der Ausführungsform gemäß Fig. 2 haben die Schraubenköpfe 39b der Schrauben 36b ballig ausgebildete Stirnseiten 40b. Auf ihnen liegt der Verstellring 41 b auf, der den Deckel 6b trägt. Mit der Verstellvorrichtung 27b kann der Deckel 6b entsprechend wie der Deckel 6a auf einfache Weise sowohl in der Höhe als auch in der Neigung verstellt werden. Ein Führungszylinder und die Vergußmasse sind nicht vorgesehen. Der Deckel 6b liegt unmittelbar am Straßenbelag 3 an. Selbstverständlich kann bei dieser Ausführungsform der Führungszylinder entsprechend der vorigen Ausführungsform vorgesehen sein.The embodiment of FIG. 3 differs from the embodiment described above only in that the bearing sleeves 33 b are arranged sunk directly into the wall of the shaft 2. The support ring 30 for the bearing sleeves of FIG. 2 is therefore not provided in this embodiment. The screws 36b are secured as in the previously described embodiment with the nuts 38b relative to the shaft 2, so that the screws 36b can not be inadvertently rotated in the set position. As in the previous embodiment, the nuts 38b are screwed back when the adjusting screws 36b need to be adjusted. After the adjustment, the nuts 38b are again turned back so far that they rest against the front side of the shaft 2 and secure the adjusting screws 36b in the new position. In further accordance with the embodiment of FIG. 2, the screw heads 39b of the screws 36b have crowned end faces 40b. On them lies the adjusting ring 41 b, which carries the lid 6b. With the adjusting device 27b, the cover 6b can be adjusted in a simple manner, both in height and in inclination, in the same way as the cover 6a. A guide cylinder and the potting compound are not provided. The cover 6b is located directly on the pavement 3. Of course, in this embodiment, the guide cylinder may be provided in accordance with the previous embodiment.

Die Ausführungsform gemäß Fig. 4 unterscheidet sich von der Ausführungsform nach Fig. 3 im wesentlichen nur dadurch, daß die Stettschrauben 36c in eine Lagerhülse 33c geschraubt sind, die im Deckel 6c verankert sind. Die Stellschrauben 36c sind mit den Muttern 38c gegenüber dem Deckel 6c verspannt. Die Schraubenköpfe 39c haben wie bei der Ausführungsform nach Fig. 2 und 3 ballige Stirnseiten 40c, mit denen sie sich auf dem Auflagering 30c abstützen. Der Auflagering 30c liegt entsprechend dem Auflagering 30 gemäß Fig. 2 auf der Stirnfläche 31 des Schachtes 2 auf. Die Stellschrauben 36c sind somit im Vergleich zur vorigen Ausführungsform auf dem Kopf angeordnet.The embodiment of FIG. 4 differs from the embodiment of FIG. 3 essentially only in that the bed screws 36c are screwed into a bearing sleeve 33c, which are anchored in the lid 6c. The screws 36c are clamped with the nuts 38c relative to the lid 6c. The screw heads 39 c have, as in the embodiment according to FIGS. 2 and 3, spherical end faces 40 c, with which they are supported on the support ring 30 c. The support ring 30c is corresponding to the support ring 30 of FIG. 2 on the end face 31 of the shaft 2. The adjusting screws 36c are thus arranged on the head in comparison to the previous embodiment.

Bei der Ausführungsform gemäß Fig. 5 liegt auf dem Schacht 2 der Auflagering 30d, auf dem anstelle der Stellschrauben Kolben-Zylinder-Vorrichtungen 36d angeordnet sind. Sie sind mit ihrem Zylinder 47 auf dem Auflagering 30d befestigt. Ihre Kolbenstangen 48 ragen nach oben aus den Zylindern 47 und tragen den Deckel 6d. Zur Höhen- und Neigungsverstellung des Deckels 6d werden die Kolbenstangen 48 ein- bzw. ausgefahren. Mit dieser Verstellvorrichtung 27d kann der Deckel 6d entsprechend den vorhergehenden Ausführungsformen stufenlos in der Höhe und in der Neigung verstellt werden, damit die Deckeloberseite 50 mit dem Straßenbelag 3 auf gleichem Niveau liegt. Um die Neigung des Deckels 6d einstellen zu können, werden die Kolben-Zylinder-Vorrichtungen 36d unabhängig voneinander betätigt. Der Deckel 6d liegt unmittelbar am Straßenbelag 3 an.In the embodiment of FIG. 5 is located on the shaft 2 of the support ring 30d, are arranged on the instead of the screws piston-cylinder devices 36d. They are attached with their cylinder 47 on the support ring 30d. Their piston rods 48 protrude upwards from the cylinders 47 and carry the cover 6d. For height and tilt adjustment of the cover 6d, the piston rods 48 are extended or retracted. With this adjusting device 27d, the cover 6d can be adjusted continuously in height and in inclination, in accordance with the preceding embodiments, so that the cover top 50 lies with the road surface 3 at the same level. In order to adjust the inclination of the lid 6d, the piston-cylinder devices 36d are operated independently. The cover 6d is directly on the pavement 3.

Auch bei dieser Ausführungsform kann ein Führungszylinder vorgesehen sein.Also in this embodiment, a guide cylinder may be provided.

Die Ausführungsform gemäß Fig. 6 unterscheidet sich von der Ausführungsform gemäß Fig. 2 dadurch, daß die Verstellvorrichtung 27e zwischen dem Auflagering 30e und dem Verstellring 41e anstelle der Stellschrauben jeweils vorzugsweise zwei übereinanderliegende Keile 51 und 52 aufweist. Die auf dem Auflagering 30e liegenden unteren Keile 52 sind so angeordnet, daß ihre schmale Stirnseite 53 nach außen in Richtung auf den Unterbau 4 und die darüberliegenden Keile 51 mit ihrer breiten Stirnseite 54 nach außen weisen. Vorteilhaft sind auf dem Schacht 2 über den Umfang des Deckels 6e mehrere mit Abstand voneinander angeordnete Keilpaare 51, 52 vorgesehen. Mit den Keilen 51, 52 läßt sich der Deckel 6e ebenfalls stufenlos in der Höhe und in der Neigung einstellen.The embodiment according to FIG. 6 differs from the embodiment according to FIG. 2 in that the adjusting device 27e preferably has two superimposed wedges 51 and 52 between the bearing ring 30e and the adjusting ring 41e instead of the adjusting screws. The lying on the support ring 30e lower wedges 52 are arranged so that their narrow end face 53 facing outward in the direction of the base 4 and the overlying wedges 51 with their wide end face 54 to the outside. Advantageously, a plurality of wedge pairs 51, 52 arranged at a distance from one another are provided on the shaft 2 over the circumference of the cover 6e. With the wedges 51, 52, the lid 6e can also be adjusted continuously in height and in inclination.

Bei der Ausführungsform gemäß Fig. 7 sind als Verstelleinrichtung 27f zwei übereinander und miteinander verschraubte Stellringe 55 und 56 vorgesehen, deren Achsen vertikal verlaufen und die koaxial zueinander liegen. Der untere Stellring 55 hat L-förmigen Querschnitt und liegt mit seinem horizontalen Schenkel 57 auf der Stirnfläche 58 des Schachtes 2 auf. Sein vertikaler Schenkel 59 liegt mit seiner äußeren Mantelfläche 60 an der Innenseite 61 des Unterbaues 4 an. Innenseitig ist der Zylinderteil 59 des Stellringes 55 mit Gewinde 67 versehen. Der obere, im Querschnitt ebenfalls L-förmige Stellring 56 ist an seinem Zylinderteil 64 außenseitig mit einem Gewinde 68 versehen. Der obere horizontale Ringteil 62 des Stellringes 56 trägt den Deckel 6f. Die mit ihrem Gewinde 67, 68 in Eingriff befindlichen Stellringe 55, 56 können durch Verdrehen stufenlos gegeneinander verstellt werden. Der Ringteil 62 des oberen Stellringes 56 hat einen Außendurchmesser, der kleiner ist als der Innendurchmesser des Straßenbelages 3. Dadurch ist sichergestellt, daß der Stellring 56 leicht gedreht werden kann. Der Deckel 6f liegt am Straßenbelag 3 an. Es ist aber auch möglich, entsprechend der Ausführungsform gemäß Fig. 2 einen Führungszylinder zu verwenden. Mit dem Stellring 56 kann der Deckel 6f lediglich in der Höhe verstellt werden. Die Ausführungsform gem. Fig. 8 entspricht im wesentlichen der Ausführungsform nach Fig. 2. Die Verstelleinrichtung 27g liegt ebenfalls innerhalb des Führungszylinders 28g, der auf dem Auflagering 30g abgestützt ist. Er weist mehrere in Umfangsrichtung mit Abstand hintereinander liegende Öffnungen 32g auf, in die jeweils eine Lagerhülse 33g eingreift. Auch der Verstellring 41g liegt auf den Stellschrauben 36g mit ballig ausgebildeter Stirnseite 40g auf.In the embodiment according to FIG. 7, two adjusting rings 55 and 56, screwed one above the other and screwed together, are provided as the adjusting device 27f, whose axes run vertically and which lie coaxially with one another. The lower collar 55 has an L-shaped cross-section and lies with its horizontal leg 57 on the end face 58 of the shaft 2. Its vertical leg 59 rests with its outer circumferential surface 60 on the inside 61 of the substructure 4. On the inside, the cylinder part 59 of the adjusting ring 55 is provided with thread 67. The upper, in cross-section also L-shaped adjusting ring 56 is provided on its cylinder part 64 on the outside with a thread 68. The upper horizontal ring portion 62 of the adjusting ring 56 carries the cover 6f. The threaded rings 67, 68 engaged with adjusting rings 55, 56 can be adjusted by turning continuously against each other. The ring portion 62 of the upper collar 56 has an outer diameter which is smaller than the inner diameter of the road surface 3. This ensures that the collar 56 can be easily rotated. The cover 6f is located on the road surface. 3 at. But it is also possible to use according to the embodiment of FIG. 2, a guide cylinder. With the adjusting ring 56, the cover 6f can be adjusted only in height. The embodiment acc. Fig. 8 corresponds substantially to the embodiment of Fig. 2. The adjusting device 27g is also within the guide cylinder 28g, which is supported on the support ring 30g. It has a plurality of circumferentially spaced apart openings 32g, in each of which a bearing sleeve 33g engages. Also, the adjusting ring 41g is on the screws 36g with a spherically formed end face 40g.

Der wesentliche Unterschied zur Ausführungsform nach Fig. 2 besteht darin, daß der Auflagering 30g radial gegenüber der Innenwand 70 des Schachtes 2 zurückversetzt ist. Auf dem über den Auflagering 30g radial nach innen ragenden Abschnitt 71 der Stirnfläche 31g des Schachtes 2 liegt ein Sicherungsring 72 (Fig. 9 und 10) auf. Er hat am Umfang eine obere und eine untere Schulter 73 und 74. Mit der unteren Schulter 74 liegt der Sicherungsring 72 auf der Stirnseite des Schachtes 2 auf. Der Sicherungsring 72 liegt mit einem umlaufenden axialen Ansatz 77 an der Innenfläche 70 des Schachtes 2 an. Auf der oberen Schulter 73 liegt ein Schutzdeckel 76 mit seinem Rand 75 auf. Vorzugsweise besteht der Sicherungsring 72 aus zwei gleichen Halbringen, so daß er problemlos in die Schachtöffnung eingesetzt und dort montiert werden kann.The essential difference from the embodiment of FIG. 2 is that the support ring 30g is set back radially relative to the inner wall 70 of the shaft 2. On the over the support ring 30g radially inwardly projecting portion 71 of the end face 31g of the shaft 2 is a locking ring 72 (Fig. 9 and 10). He has on the periphery of an upper and a lower shoulder 73 and 74. With the lower shoulder 74 of the retaining ring 72 is located on the front side of the shaft 2. The circlip 72 bears with a circumferential axial projection 77 on the inner surface 70 of the shaft 2. On the upper shoulder 73 is a protective cover 76 with its edge 75 on. Preferably, the retaining ring 72 consists of two equal half-rings, so that it can be easily inserted into the shaft opening and mounted there.

Der Schutzdeckel 76 hat eine zentrale Öffnung 79, in die zum Herausnehmen bzw. Einsetzen des Deckels ein Werkzeug eingeführt werden kann. Der Schutzdeckel 76 verhindert, daß in den Schacht Schmutz, Verunreinigungen und dgl. fallen können.The protective cover 76 has a central opening 79 into which a tool can be inserted for removing or inserting the lid. The protective cover 76 prevents dirt, impurities and the like from falling into the shaft.

Die Ausführungsform gem. den Fig. 13 bis 15 unterscheidet sich von der zuvor beschriebenen Ausführungsform im wesentlichen nur dadurch, daß unterhalb der Verstelleinrichtung 27h bzw. ihres Auflageringes 30h und der Schachtoberseite 31h wenigstens ein, vorzugsweise zwei aufeinanderliegende Keilringe 80 und 81 angeordnet sind. Mit ihnen kann die Neigung des Deckels 6h zur Anpassung an unterschiedliche Gefälle der Straße einfach und schnell und in einem relativ großen Neigungswinkel verstellt werden. Die beiden Keilringe 80 und 81 sind vorzugsweise gleich ausgebildet. Sie können zur Einstellung unterschiedlicher Neigungswinkel des Deckels 6h gegeneinander verdreht aufeinandergesetzt werden. Hierzu weisen die Keilringe 80, 81 Rastglieder und Rastgegenglieder 82 und 83 auf. Wie die Fig. 14 und 15 anhand des Keilringes 80 zeigen, weist dieser zur Gewichtsreduzierung nahe längs seines Randes eine nahezu halbkreisförmige Ringnut 84 auf. Sie liegt vorteilhaft in der Ringhälfte 80', die die größere Ringdicke aufweist. Die Breite der Ringnut 84 ist etwa gleich der halben Nuttiefe. Vorteilhaft weist der Keilring 80 zwei diametral einander gegenüberliegende Rastglieder 82 auf, die mit geringem Abstand vor den Enden 89 und 90 der Ringnut 80 vorgesehen sind. Die Rastglieder 82 sind als noppenartige Vorsprünge ausgebildet. Sie ragen über die gleiche Oberseite 91 des Keilringes 80, in der die Ringnut 84 liegt. In der anderen Ringoberseite 92 sind die als Vertiefung ausgebildeten Rastgegenglieder 83 vorgesehen. Ihre Weite und Tiefe ist an die Rastglieder 83 angepaßt, so daß diese in Raststellung der Keilringe 80 und 81 formschlüssig in die Rastöffnungen passen. Vorzugsweise sind sechs Rastgegenglieder 83 vorgesehen, die jeweils in einem Winkelabstand von 60° angeordnet sind.The embodiment acc. Figs. 13 to 15 differs from the embodiment described above substantially only in that below the adjusting 27h and their Auflageringes 30h and the shaft top 31h at least one, preferably two superposed wedge rings 80 and 81 are arranged. With them, the inclination of the lid 6h can be adjusted to adapt to different gradients of the road easily and quickly and at a relatively large inclination angle. The two wedge rings 80 and 81 are preferably identical. They can be set against each other twisted to set different inclination angle of the lid 6h. For this purpose, the wedge rings 80, 81 latching members and latching opposing members 82 and 83. As shown in FIGS. 14 and 15 with reference to the wedge ring 80, it has a nearly semicircular annular groove 84 near its edge for weight reduction. It is advantageous in the ring half 80 ', which has the larger ring thickness. The width of the annular groove 84 is approximately equal to half the groove depth. Advantageously, the wedge ring 80 has two diametrically opposed locking members 82, which are provided at a short distance from the ends 89 and 90 of the annular groove 80. The locking members 82 are formed as knob-like projections. They protrude over the same top 91 of the wedge ring 80, in which the annular groove 84 is located. In the other ring top 92 formed as a recess detent opposing members 83 are provided. Their width and depth is adapted to the locking members 83 so that they fit into the locking position of the wedge rings 80 and 81 in a form-fitting manner in the locking openings. Preferably, six locking counter-members 83 are provided, which are each arranged at an angular distance of 60 °.

In Seitenansicht gemäß Fig. 15 verjüngt sich der Kielring 80 keilförmig vom einen Rand 85 zum gegenüberliegenden Rand 86. Im Bereich des Randes 85 hat der Keilring seine größte Höhe von beispielsweise etwa 50 mm. Der gegenüberliegende Rand 86 hat eine Höhe von beispielsweise etwa 10 mm. Durch Verdrehen der Keilringe 80, 81 in Winkelabständen von 60° gegeneinander kann die Neigung des Deckels 6 verringert oder vergrößert werden. In Fig. 13 sind die Keilringe 80, 81 so zueinander angeordnet, daß der Deckel 6h seine maximale Neigung einnimmt. Durch Verdrehen des einen Keilringes 80 bzw. 81 gegenüber dem anderen Keilring um einen Winkel von 60° wird die Neigung des Deckels entsprechend flacher. Je weiter der eine Keilring 80, 81 gegenüber dem anderen aus der Stellung gemäß Fig. 13 verdreht wird, desto geringer wird die Neigung des Deckels 6h. Wenn der Keilring 80 um einen Winkel von 180° gegenüber dem anderen Keilring 81 verdreht ist, bilden die Keilringe eine zur Schachtoberseite 31h parallele Oberseite, so daß der Auflagering im wesentlichen horizontal liegt. Geringe Neigungsverstellungen können durch die Verstelleinrichtung 27h, wie zuvor beschrieben, in jeder Lage der Keilringe 80, 81 zueinander ausgeführt werden.In side view of FIG. 15, the keel ring 80 tapers in a wedge shape from one edge 85 to the opposite edge 86. In the region of the edge 85 of the wedge ring has its greatest height of, for example, about 50 mm. The opposite edge 86 has a height of, for example, about 10 mm. By turning the wedge rings 80, 81 at angular intervals of 60 ° to each other, the inclination of the lid 6 can be reduced or increased. In Fig. 13 are the Wedges 80, 81 arranged to each other so that the lid 6h assumes its maximum inclination. By turning the one wedge ring 80 or 81 relative to the other wedge ring at an angle of 60 °, the inclination of the lid is correspondingly flatter. The further the one wedge ring 80, 81 is rotated relative to the other from the position shown in FIG. 13, the lower the inclination of the lid 6h. When the wedge ring 80 is rotated through an angle of 180 ° with respect to the other wedge ring 81, the wedge rings form a top parallel to the shaft top 31h so that the support ring is substantially horizontal. Small inclination adjustments can be performed by the adjusting device 27h, as described above, in each position of the wedge rings 80, 81 to each other.

Der untere Keilring 81 liegt vorteilhaft unter Zwischenlage eines Dämpfungsringes 87 auf der Stirnfläche 31h des Schachtes 2 auf.The lower wedge ring 81 is advantageous with the interposition of a damping ring 87 on the end face 31h of the shaft 2.

Die Vorrichtung gemäß Fig. 13 kann auch so ausgebildet sein, daß zur Neigungsverstellung des Deckels 6h ausschließlich die beiden Keilringe 80 und 81 vorgesehen sind, also die Verstelleinrichtung 27h entfällt. Ferner können bei Bedarf auch weitere, den Keilringen 80, 81 entsprechende Keilringe vorgesehen sein, so daß eine noch größere Neigungsverstellung des Deckels möglich ist. Die Keilringe 80, 81 können auch so ausgebildet sein, daß ihre Rastglieder in einem anderen, beispielsweise kleineren Winkelabstand als 60° vorgesehen sind, um eine noch genauere Anpassung der Neigung des Deckels an das jeweilige Gefälle zu ermöglichen.The device according to FIG. 13 can also be designed such that exclusively the two wedge rings 80 and 81 are provided for inclination adjustment of the cover 6h, ie the adjusting device 27h is omitted. Further, if necessary, further, the wedge rings 80, 81 corresponding wedge rings may be provided, so that an even greater tilt adjustment of the lid is possible. The wedge rings 80, 81 may also be formed so that their locking members are provided in another, for example, smaller angular distance than 60 ° to allow even more accurate adjustment of the inclination of the lid to the respective slope.

Claims (27)

  1. Device for covering of manholes (2), particularly manholes in streets and the like with at least one cover piece (6a, 6g, 6h) and with an adjustment mechanism (27, 27g, 27h) with which the cover piece (6a, 6g, 6h) can be set in height and/or inclination and comprising at least one setscrew (36, 36g) as a lift element with which the cover piece (6a, 6g, 6h) is adjustable in direction of height and which is screwed within a holder (33, 33g) provided at a support ring (30, 30g, 30h), supported on the manhole (2),
    characterised in that the cover piece (6a, 6g, 6h) is supported on a washer (41, 41g, 41h) laying loosely on the head (39) the setscrew (36, 36g) and that the holder (33, 33g) is a bearing bush onto the end face of which contacts a locknut, sitting on the setscrew (36, 36g, 36h).
  2. Device according to claim 1,
    characterised in that several setscrews (36, 36g) are provided, situated one behind the other preferably with the same perimetrical distance.
  3. Device according to claim 1 or 2,
    characterised in that the holder (33, 33g) is fixed upon the support ring (30, 30g), preferably welded together.
  4. Device according to claim 3,
    characterised in that the holder (33, 33g) is fixed within an opening (32) of the support ring (30, 30g).
  5. Device according to one of the claims 1 to 4,
    characterised in that the washer (41, 41 g) is a setting ring.
  6. Device according to one of the claims 1 to 5,
    characterised in that the head (39) of the setscrew (36, 36g) is formed spherically.
  7. Device according to one of the claims 1 to 6,
    characterised in that the washer (41, 41g) is constituted by a ring, preferably by a ring consisting of galvanized steel.
  8. Device according to one of the claims 1 to 7,
    characterised in that onto the manhole (2) within the area of the adjustment mechanism (27g) a protective device (72, 76) is provided, preferably comprising a protective cover (76).
  9. Device according to claim 8,
    characterised in that protective cover (76) is formed as a flat disc, comprising advantageously a preferable central opening (39) and resting on a retaining ring (72).
  10. Device according to claim 8 or 9,
    characterised in that the retaining ring (72) rests with a shoulder (74) on the upper side of the manhole (31g).
  11. Device according to one of the claims 8 to 10,
    characterised in that the protective cover (76) lays within the ring shoulder (74) of the retaining ring (72).
  12. Device according to one of the claims 1 to 11,
    characterised in that the support ring (30h) is supported by at least one wedge (80, 81) on the manhole (2).
  13. Device according to claim 12,
    characterised in that two wedges (80, 81) are provided, lying above one another.
  14. Device according to claim 13,
    characterised in that both wedges (80, 81) are formed equally.
  15. Device according to claim 13 or 14,
    characterised in that both wedges (80, 81) are formed as rings.
  16. Device according to one of the claims 13 to 15,
    characterised in that the wedge rings (80, 81) are tapered trapeziform within its cross-section.
  17. Device according to claim 15 or 16,
    characterised in that the biggest thickness of the wedge rings (80, 81) is several times, preferably approximately five times bigger than the smallest thickness of the wedge rings.
  18. Device according to one of the claims 13 or 17,
    characterised in that the wedge rings (80, 81) can be locked one against the other, comprising advantageously at the one of their upper side (91) a latch member (82) preferably constituted by a knob-like projection part and at the other upper side (92) at least one counter latch member (83) preferably constituted by a deepening.
  19. Device according to claim 18,
    characterised in that at least two latch members (82) are provided, opposing each other diametrally.
  20. Device according to claim 18 or 19,
    characterised in that several counter latch members (83) are provided, laying one behind the other in peripheral direction with a distance, preferably an angular separation of approximately 60°.
  21. Device according to one of the claims 18 to 20,
    characterised in that the wedge rings (80, 81) comprise at least one groove (84) provided advantageously at the upper side (91) of the wedge ring (80, 81) featuring the latch member (82).
  22. Device according to claim 21,
    characterised in that the groove (84) extends in the peripheral direction of the wedge ring (80, 81) preferably over nearly half of its circumference.
  23. Device according to claim 21 or 22,
    characterised in that the latch member (82) is placed with little distance from the end (89, 90) of the groove (84).
  24. Device according to one of the claims 1 to 23,
    characterised in that at least the adjustment mechanism (27, 27h) and/or the frame (41, 41g, 41h) are surrounded by a guiding element (28, 28g) advantageously formed as bush, preferably as a steel bush.
  25. Device according to claim 24,
    characterised in that the guiding element (28, 28g) protrudes the adjustment mechanism (27) downwards and upwards and that advantageously the guiding element (28, 28g) extends over at least a part of the thickness of the cover piece (6a, 6g) and up to the upper border of the manhole (2).
  26. Device according to claim 24 or 25,
    characterised in that the guiding element (28, 28g) abuts with its upper border (44) at a sealing element (45), preferably an O-ring seal.
  27. Device according to one of the claims 24 to 26,
    characterised in that the guiding element (28, 28g) and/or the sealing element (45) are situated within a joint sealing compound (46) provided preferably from the manhole (2) up to preferably the whole height of the cover piece (6a, 6g).
EP00103570A 1999-02-24 2000-02-19 Device for covering a manhole Expired - Lifetime EP1031663B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19907825 1999-02-24
DE19907825 1999-02-24
DE19932166 1999-07-13
DE19932166A DE19932166A1 (en) 1999-02-24 1999-07-13 Device for covering manholes and separating device for exposing manhole covers

Publications (3)

Publication Number Publication Date
EP1031663A2 EP1031663A2 (en) 2000-08-30
EP1031663A3 EP1031663A3 (en) 2000-09-27
EP1031663B1 true EP1031663B1 (en) 2006-11-15

Family

ID=26052015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103570A Expired - Lifetime EP1031663B1 (en) 1999-02-24 2000-02-19 Device for covering a manhole

Country Status (5)

Country Link
EP (1) EP1031663B1 (en)
AT (1) ATE345422T1 (en)
CA (1) CA2299838A1 (en)
DE (1) DE50013729D1 (en)
TR (1) TR200000493A3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20020079U1 (en) * 2002-04-22 2003-10-22 Antonio Campagna DEVICE FOR HEIGHT ADJUSTMENT OF A COVER FOR TOMBINO.
NZ526572A (en) * 2003-06-18 2006-12-22 Derrick Anthony Rhodes A utility portal
ITRM20060564A1 (en) 2006-10-17 2008-04-18 Bruno Zanatta ADJUSTABLE CLOSING DEVICE FOR TRAPS
DE102010047728B4 (en) * 2010-10-07 2015-03-12 Eckhard Irrgang Method for producing and arranging a inspection shaft of a channel in a street
NZ590938A (en) * 2011-02-04 2013-08-30 Opus Internat Consultants Ltd Improvements to adjustable supports for access hatch frames
ITPD20120273A1 (en) * 2012-09-19 2014-03-20 Bruno Zanatta TOMBINI FRAME FOR POZZETTI

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1900552A1 (en) * 1969-01-07 1970-11-26 Wachenfeld Teschner Fritz Device for stepless height adjustment of built-in parts consisting of lids and frames in road surfaces, e.g. manhole covers
DE2351070A1 (en) * 1973-10-11 1975-04-17 Bruno Koch Height compensating component for drain covers - cover has ring and is raised or lowered by applying screw elements
US5095667A (en) * 1990-03-07 1992-03-17 Chester Ryan Telescopic manhole and storm drain installation
EP0485649A1 (en) * 1990-11-13 1992-05-20 Antonio Campagna Height adjustable bearing frame for manhole covers
DE4127806A1 (en) * 1991-08-22 1993-03-04 Kuemper & Schwarze Baubetriebe Height adjustable road manhole cover - has height of manhole adjusted by threaded studs to match intermediate layers of tarmac during construction.
DE9200912U1 (en) * 1992-01-27 1992-04-09 Opfer, Herbert, 6419 Haunetal Double ring to compensate for differences in gradient and inclination
DE4230006C2 (en) 1992-09-08 1996-10-17 Josef Feit Height-adjustable manhole cover and method for its installation in the surface of a street or the like.
US5344253A (en) * 1993-09-01 1994-09-06 Cesare Sacchetti Adjustable manhole cover
US5956905A (en) * 1997-02-06 1999-09-28 Wiedrich; Dwight G. Manhole adjusting extension member

Also Published As

Publication number Publication date
EP1031663A2 (en) 2000-08-30
TR200000493A2 (en) 2000-09-21
DE50013729D1 (en) 2006-12-28
CA2299838A1 (en) 2000-08-24
ATE345422T1 (en) 2006-12-15
TR200000493A3 (en) 2000-09-21
EP1031663A3 (en) 2000-09-27

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