WO2010137972A2 - Procédé et dispositif pour asphalter une surface sur laquelle un trou d'homme est présent - Google Patents

Procédé et dispositif pour asphalter une surface sur laquelle un trou d'homme est présent Download PDF

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Publication number
WO2010137972A2
WO2010137972A2 PCT/NL2010/050298 NL2010050298W WO2010137972A2 WO 2010137972 A2 WO2010137972 A2 WO 2010137972A2 NL 2010050298 W NL2010050298 W NL 2010050298W WO 2010137972 A2 WO2010137972 A2 WO 2010137972A2
Authority
WO
WIPO (PCT)
Prior art keywords
manhole
manhole frame
supporting device
asphalt
frame
Prior art date
Application number
PCT/NL2010/050298
Other languages
English (en)
Other versions
WO2010137972A3 (fr
Inventor
Marcel Oonk
Gerben Johan Heideman
Original Assignee
Well Lifter Engineering B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Well Lifter Engineering B.V. filed Critical Well Lifter Engineering B.V.
Priority to DE112010002091T priority Critical patent/DE112010002091T5/de
Publication of WO2010137972A2 publication Critical patent/WO2010137972A2/fr
Publication of WO2010137972A3 publication Critical patent/WO2010137972A3/fr

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
    • B66F19/005—Lifting devices for manhole covers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1445—Tools for positioning or removing cover frames

Definitions

  • the present invention relates to a method for asphalting a surface in which at least one manhole is provided, which method comprises the following steps: a) installing a manhole frame in said at least one manhole; b) covering said at least one manhole; c) laying an asphalt layer of a specified height over the surface to be asphalted, using an asphalt machine; and d) making said at least one manhole accessible, wherein the manhole frame is lifted so as to adjust its height to the asphalt layer that has been or is to be laid.
  • the manhole frame may be a temporary frame or (part of) a permanent manhole frame.
  • the manhole frame may be provided with a cover, in which case the placing of the manhole frame in fact takes place simultaneously with step b).
  • a steel plate is laid over the manhole on the subgrade. Following that, a layer of rubble is deposited as a substrate layer for asphalt to be subsequently laid. The steel plate is then traced by means of a metal detector and cleared by scooping the rubble off the steel plate, after which the steel plate is removed. Subsequently, a manhole frame provided with a downwardly extended shaft is placed in the manhole and manually adjusted so that it projects above the layer of rubble to a desired extent, after which a preliminary or definitive cover is placed on the manhole frame.
  • a layer of asphalt is laid over the layer of rubble by means of an asphalt spreader or asphalt machine, after which the layer of asphalt may be subjected to a finishing treatment, for example rolling. Because the manhole frame and the cover float in the asphalt, the manhole frame is depressed along with the upper surface of the asphalt when the asphalt is being rolled and the two will remain aligned with each other. Usually a road surface is built up of a number of layers of asphalt. Before a second (or next) layer of asphalt is provided, the asphalt surrounding the outer edge of the manhole is manually removed for raising the manhole frame to the desired height again, for example by pulling it up by means of a crane.
  • the space between the layer of asphalt that is already present and the outer edge of the manhole is manually filled with asphalt and the manhole frame is fixed at the adjusted height, using asphalt which is likewise manually provided. Then the next layer of asphalt can be provided by means of a asphalt machine. This method is repeated for each next layer of asphalt.
  • the known method is very labourious. With each new layer of asphalt, no matter how many layers are already provided, the asphalt from the previously laid layer of asphalt surrounding of the manhole frame must be removed, from the upper edge of the manhole frame in some cases as deep as to the layer of rubble, in order to clear the manhole frame so as to be able to pull it up. This must be done with due care, and frequently part of the asphalt surrounding the manhole frame is pulled up from the road along with the manhole frame. In addition, the quality of he asphalt layer surrounding the manhole frame is relatively low, due to the fact the space surrounding the manhole frame is repeatedly cleared of asphalt and manually filled with asphalt again.
  • the manhole frame can first and foremost not fall into the manhole.
  • a controlled force can be exerted on the manhole frame by means of the supporting device, and that in such a manner that the manhole frame will retain the desired orientation at all times, which orientation is ensured by the supporting device. Because the supporting device is supported on a bottom of the manhole, a large force can be developed from said bottom, and the supporting device which is, at least to a large extent, disposed within the manhole will hardly, if at all, interfere with the asphalting operation.
  • the lifting force can thus be exerted on the manhole frame in a controlled manner, adequately distributed over said manhole frame, this in contrast to the known method, which makes use of a crane.
  • the manhole frame While the manhole frame is subsequently held in its correct position by the supporting device, the manhole frame can be fixed in said position relative to the subgrade by means of manually provided asphalt.
  • the supporting device can be removed prior to the asphalting operation in order to prevent it from being damaged during said asphalting by means of the asphalt machine or during the rolling of the new asphalt layer.
  • the cover must be cleared prior to being adjusted, because the adjusting device engages the cover from above. Furthermore, the adjusting device seems to be of relatively light construction, because the device only needs to be suitable for adjusting a cover. The device is not suitable for pushing a manhole frame up through a layer of asphalt.
  • the manhole frame is lifted prior to step c).
  • the manhole frame can be lifted to approximately the correct height prior to the asphalting operation, as discussed with reference to the known method, the difference being that a supporting device makes it possible to lift the manhole frame in a very controlled and gradual manner.
  • the manhole frame is lifted after step d) but prior to the rolling of the asphalt layer, or at least prior to the rolling of the part of the asphalt layer in which the manhole frame is disposed.
  • the asphalt layer is in that case laid over the entire manhole frame.
  • the manhole frame can subsequently be largely cleared of asphalt, so that the adjusting means for the vertical adjustment can be reached and the manhole frame is pushed up "through the asphalt" to above the newly laid asphalt layer by means of the supporting device.
  • the asphalt layer is rolled, thereby aligning the upper edge of the manhole frame with the asphalt.
  • steps b) - d) are repeated several times so as to provide a road surface consisting of several layers of asphalt, with the manhole frame being raised each time after a preceding asphalting step.
  • the manhole frame can be positioned at a higher level, for example by means of the supporting means, after a layer of asphalt has been laid.
  • a new circumferential wall segment can be placed on top of the manhole frame for the preceding layer of asphalt.
  • the present invention relates to a supporting device for a manhole frame for use in the first aspect of the present invention, said supporting device comprising a foot by means of which the supporting device in use is supported on a bottom of a manhole, and supporting means supported by the foot which in use support the manhole frame, whilst height adjusting means are provided for adjusting the desired height of the supporting means for the manhole frame.
  • the height adjusting means may comprise mechanical height adjusting means, such as a spindle, for example.
  • the height adjusting means may alternatively comprise hydraulic or pneumatic adjusting means. It is advantageous in that case if the adjusting means are suitable for stepless adjustment of the height of the manhole frame. As already indicated before, the desired height of the manhole frame is determined by the height of the asphalt layer to be laid, among other factors.
  • orientation adjusting means are provided for adjusting the orientation of the manhole frame relative to the horizontal.
  • the manhole frame preferably extends perpendicularly to the final road surface at the location of said at least one manhole.
  • roads are constructed to be convex so as to effect an adequate drainage of rain water to the side of the road surface, in addition, a road itself may be oriented at a certain angle. In both cases it is preferable if the manhole frame is oriented at an angle corresponding to the local orientation angle of the road surface relative to the vertical.
  • the supporting device can provide three bearing points on which the manhole frame can be positioned. Three bearing points provide a stable bearing surface. If one or more bearing points can be individually adjusted for height, it is possible to adjust the orientation of the manhole frame in this way.
  • a manhole cover to be placed on the manhole frame can in that case be laid on the manhole frame in alignment with the road surface.
  • indication means are provided, which indication means extend to above the surface to be asphalted when the manhole frame is being supported. This prevents the risk that a cover is placed on the manhole frame and asphalting is started while the manhole frame is still being supported by the supporting means.
  • the indication means comprise operating means for operating the supporting device.
  • the operating means may comprise a shaft with a handwheel for adjusting the height of the supporting device, and thus the height of the manhole frame, and/or the orientation of the manhole frame.
  • a user-friendly device is provided if the operating means can be moved between an operative position and a non-operative position. In a non-operative position, the operating means must have been removed or at least not extend above the manhole frame. This means that they must be countersunk in the road surface. To realise better ergonomics, the operating means can be moved upwards to the operative position.
  • the operating means are also indication means in the sense of the preceding paragraph.
  • the operating means are coupled with the supporting means, so that the support by the supporting means is removed when the operating means are moved from the operative position to the non-operative position. Thus a user can see whether or not the support of the manhole frame by the supporting means has been released.
  • the supporting device comprises lifting means by means of which a manhole frame, after an asphalt layer has been laid, is lifted within the framework of the operations for asphalting a surface.
  • the manhole frame can thus be lifted somewhat in a simple manner each time a new layer of asphalt is (to be) laid.
  • the lifting means comprise at least one lifting device for lifting the entire manhole frame and/or at least one local lifting device for locally lifting the manhole frame.
  • the lifting device for lifting the entire manhole frame and/or at least one local lifting device for locally lifting the manhole frame.
  • the height of the manhole frame can be adjusted.
  • the orientation of the bearing surface for the manhole frame can be adjusted.
  • the present invention further relates to the use of a supporting device according to the second aspect of the invention in the asphalting of a surface, wherein the supporting device is supported with its foot on the bottom of the manhole and wherein the manhole frame is positioned to project at least partially above the surface to be asphalted, using the supporting device, prior to the asphalting of the surface.
  • the advantages hereof correspond to the advantages described with reference to the first and the second aspect of the invention.
  • Figure 1 is a perspective view of a part of a supporting device according to the present invention.
  • Figure 2 is a perspective view of the supporting device of figure 1 , disposed in a manhole;
  • Figures 3a-3e are sectional views of steps to be carried out when asphalting a road surface in accordance with the present invention.
  • Figure 1 shows a vertically adjustable stamp 1 as the supporting device according to the present invention.
  • the stamp 1 comprises a spindle 2, on which a tubular housing 3 is supported.
  • a rotatable bush 5 provided with internal screw thread is supported on the housing 3 via a bearing (not shown).
  • the spindle 2 is surrounded by an inner rotatable bush 6, which is in turn surrounded by a static bush 7, to which arms 8a, 8b, 8c are attached, in which arms keyhole-shaped holes 19 are provided.
  • the bushes 6 and 7 are covered by a flange 9 and a disc 10, respectively, which disc can be rotated via the engaging element 11.
  • the arms 8a, 8b, 8b each accommodate an extension piece 12a, 12b and 12c, respectively, which is held in place by bolts 13 and by shafts 14 that can be rotated by means of handwheels 15.
  • bolts 17 provided with a support plate 18 are provided, which bolts are rotatable in brass bushes 16.
  • FIG. 2 shows a stamp 1 in a housing 30 of a storm drain as the manhole.
  • the spindle 2 is supported on two tubes 20a, 20b which can be telescoped together, which tubes are provided with through holes 21a and 21b, respectively.
  • the lower tube 20b is connected to a foot 22, which rests on the bottom 31 of the storm drain.
  • the storm drain is provided with a concrete cover 32 at the upper side, in which a circular opening is present.
  • a first layer of asphalt 33 (only a circular part of which is shown here) lies on the cover 32.
  • On said first layer of asphalt 33 lie a second layer of asphalt 33a and a manually provided third layer of asphalt 34, on which a flange-shaped edge 35 of a manhole frame 36 is supported.
  • Figures 3a-3e show in cross-sectional view successive situations of the manhole and asphalt of figures 1 and 2 when an layer of asphalt is being laid by means of the device, using a method according to the present invention
  • like elements are indicated by the same numerals.
  • FIG 1 the upper part of a vertically adjustable stamp 1 is shown partially in cut-away view and partially in sectional view.
  • Figure 2 shows the stamp 1 in a housing 30 of a storm drain, on which a first and a second layer of asphalt 33 and 33a, respectively, and a third auxiliary layer of asphalt 34 for a manhole frame 36 placed on the storm drain 30 is provided.
  • the operation of the stamp 1 will now be explained with reference to figures 1 and 2.
  • the stamp 1 is placed on the bottom 31 of the storm drain 30 with a foot 22.
  • a first vertical adjustment of the supporting parts of the stamp 1 is achieved by sliding the tube 20a upwards in the tube 20b to a desired height and passing a pin through mutually aligned pairs of holes 21a and 21 b so as to lock the tubes 20a and 20b together.
  • the spindle 2 has a relatively wide lower part not provided with screw thread and a relatively narrow upper part provided with screw thread. The transition between the relatively narrow part and the relatively wide part forms a stop 4 for the rotatable bush 5. An upper stop may be provided as well.
  • the rotatable bush 5 engages the external screw thread of the upper part of the spindle 2 with its 5 internal screw thread.
  • a static bush 7 is supported on an upper circumferential wall of the rotatable bush 5 via a bearing (not shown), which static bush surrounds an inner rotatable bush 6.
  • the bush 6 is provided with a cover disc 10 which is fixed to the bush 6, to which cover disc an engagement element 11 for a tool is fixedly connected.
  • the engagement element 11 is engaged and rotated 0 by means of the tool, the inner bush 6 and the rotatable bush 5 are rotated along with the engagement element 11. Since the bush 5 engages the spindle 2 with its internal screw thread, the height of the upper part of the stamp 1 is adjusted by rotating the engagement element 11. It will be understood that, using the present stamp 1, this can be done in a very gradual and controlled manner.
  • each individual support plate 18 can be individually adjusted for adapting 0 the bearing surface for the manhole frame 36 formed by the three support plates 18. This will become clearer when looking at the cutaway arm 8c and the extension piece 12c.
  • a brass bush 16 is mounted in a through hole of the extension piece 12c.
  • the brass bush 16 houses a bolt 17, to the upper end of which a support plate 18 is attached. By rotating the bolt 5 17 relative to the brass bush 16, the bolt 17 is turned into or out of the brass bush 16, thereby adjusting the height of the support plate 18 of the arm 8c.
  • this adjustment serves to adjust the height of the support plate 18 on the arm 8c relative to the other two support plates 18 on the arms 8a and 8b, which can be0 individually adjusted for height in a comparable manner.
  • the extension pieces 12a, 12b and 12c are slidably accommodated in the arms 8a, 8b and 8c, respectively. This will now be explained in more detail, again with reference to the cutaway arm 8c.
  • the extension piece 12c is clamped to the upper part of the arm 8c by means of
  • FIGS 3a-3e show a subgrade 40, in which a storm drain 30 is present. Disposed in the storm drain 30 is a stamp 1 , only the upper part of which is visible in figures 3a-5 3e.
  • the storm drain 30 is provided with a concrete cover 32, which has a circular opening for the manhole frame 36 and whose upper side is flush with the upper surface of the subgrade 40.
  • Figure 3a shows a situation in which the stamp 1 supports a manhole frame 36 via three support plates 18 (only one of which is shown in its0 entirety and one is shown in cross-sectional view in figures 3a-3e), and that in such a manner that the flange-shaped upper edge 35 of the manhole frame 36 "floats" above the surface of the subgrade 40.
  • the stamp 1 has to that end been so adjusted by means of the telescopic tubes 20a, 20b (not shown in figures 3a-3e), the rotatable bush 5 and by adjusting the support plates 18 that the manhole frame 36 is5 positioned at the desired height and in the desired orientation relative to the horizontal (read: parallel to the upper surface of the subgrade 40).
  • the shafts 14 and the handwheels 15 extend to above the flange-shaped upper edge 35 of the manhole frame 36.
  • Figure 3b shows a next step, in which asphalt 41 has been manually0 provided on the upper surface of the subgrade 40 around the manhole frame 36.
  • the asphalt 41 functions to fix the manhole frame in the position adjusted by the stamp 1.
  • the handwheels 15 are still positioned above he flange-shaped edge 35.
  • FIG. 3c shows the next step, in which the extension pieces 12 of
  • the arms have been lowered through the keyhole-shaped holes (see figure 1 ) in a manner as already explained with reference to figure 1.
  • the manhole frame 36 is now only supported by the manually provided asphalt 41 around the manhole frame 36.
  • the handwheels 15 are now positioned below the level of the flange-shaped upper edge 35, so that the manhole cover 37 can be placed on the manhole frame 36. In this position the subgrade 40 can be asphalted by means of an asphalt machine (not shown).
  • Figure 3d shows a situation after asphalt has been laid on the subgrade 40.
  • a uniform layer of asphalt 42 is present on the entire subgrade 40, of which layer of asphalt the asphalt that was previously manually provided (indicated at 41 in figures 3b and 3c) forms an integral part.
  • the manhole cover 37 is removed and the extension pieces 12 are returned to the position shown in figures 3a and 3b.
  • the manhole frame 36 is positioned lower than in the situation shown in figures 3a- 3c, for example after the asphalt has been rolled, the rotatable bush, and thus also the arms 8, will first have to be moved downwards by operating the engaging element 11.
  • raising and fixing the manhole frame above the subgrade surface can be done in any suitable way.
  • the stamp shown and described herein functions entirely mechanically, but it is also possible to use a stamp which is driven by hydraulic or pneumatic means for raising and lowering a manhole frame.

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

Abstract

L'invention concerne un procédé pour asphalter une surface sur laquelle un ou plusieurs trous d'homme sont disposés, ledit procédé comprenant les étapes consistant à : a) installer une structure de trou d'homme dans ledit ou lesdits trous d'homme ; b) couvrir ledit ou lesdits trous d'homme ; c) poser une couche d'asphalte d'une hauteur spécifiée sur la surface devant être asphaltée, en utilisant une asphalteuse ; et d) rendre accessible le trou d'homme ou un desdits trous d'homme. Ladite structure de trou d'homme est soulevée de façon à ajuster sa hauteur à la couche d'asphalte qui a été ou doit être posée. Avant l'étape b), une structure de trou d'homme est fournie pour le ou les plusieurs trous d'homme, cette structure s'étendant au plus jusqu'à ladite hauteur spécifiée de la couche d'asphalte devant être posée au-dessus de la surface devant être asphaltée. Un dispositif de support ajustable verticalement est utilisé, en étant supporté sur le fond du trou d'homme pendant le soulèvement de la structure de trou d'homme pour supporter la structure de trou d'homme au moins pendant qu'elle est soulevée. L'invention concerne également un dispositif de support destiné à être utilisé dans un tel procédé.
PCT/NL2010/050298 2009-05-26 2010-05-19 Procédé et dispositif pour asphalter une surface sur laquelle un trou d'homme est présent WO2010137972A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112010002091T DE112010002091T5 (de) 2009-05-26 2010-05-19 Verfahren und Vorrichtung zum Asphaltieren einer Oberfläche, in der ein Schacht vorhanden ist

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1036990A NL1036990C2 (nl) 2009-05-26 2009-05-26 Werkwijze en inrichting voor het asfalteren van een oppervlak waarin zich een put bevindt.
NL1036990 2009-05-26

Publications (2)

Publication Number Publication Date
WO2010137972A2 true WO2010137972A2 (fr) 2010-12-02
WO2010137972A3 WO2010137972A3 (fr) 2011-09-22

Family

ID=41449919

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Application Number Title Priority Date Filing Date
PCT/NL2010/050298 WO2010137972A2 (fr) 2009-05-26 2010-05-19 Procédé et dispositif pour asphalter une surface sur laquelle un trou d'homme est présent

Country Status (3)

Country Link
DE (1) DE112010002091T5 (fr)
NL (1) NL1036990C2 (fr)
WO (1) WO2010137972A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114658039A (zh) * 2022-04-18 2022-06-24 日照市政工程有限公司 检查井防护盖板及其应用的路面沥青铺设施工方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104790695A (zh) * 2014-08-15 2015-07-22 深圳市中建南方装饰工程有限公司 一种游泳池地面检修口

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906490A (en) * 1956-04-09 1959-09-29 Inland Steel Products Company Telescopic jack post
US5435662A (en) * 1993-09-21 1995-07-25 Brown; Donald M. Method and device for marking paint strips and maintenance covers when resurfacing streets
DE19907438A1 (de) * 1999-02-22 2000-04-13 Jonny Henkel Vorrichtung zur Herstellung von Aussparungen für Straßenkappen oder Schachtabdeckungen beim Straßen-, Wege- und Platzbau und Verfahren zur Herstellung von Aussparungen unter Verwendung dieser Vorrichtung
WO2002018713A1 (fr) * 2000-09-01 2002-03-07 Precision Cover Systems Dispositif d'acces reglable a une installation
EP1209291A1 (fr) * 2000-11-24 2002-05-29 J. + E. Cordes GmbH Dispositif pour localiser et ouvrir un cadre asphalté de regard de chaussée ou similaire
DE202008013095U1 (de) * 2008-10-06 2009-01-02 Buderus Kanalguss Gmbh Vorrichtung zur Justierung der Einbauhöhe von Schachtrahmen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906490A (en) * 1956-04-09 1959-09-29 Inland Steel Products Company Telescopic jack post
US5435662A (en) * 1993-09-21 1995-07-25 Brown; Donald M. Method and device for marking paint strips and maintenance covers when resurfacing streets
DE19907438A1 (de) * 1999-02-22 2000-04-13 Jonny Henkel Vorrichtung zur Herstellung von Aussparungen für Straßenkappen oder Schachtabdeckungen beim Straßen-, Wege- und Platzbau und Verfahren zur Herstellung von Aussparungen unter Verwendung dieser Vorrichtung
WO2002018713A1 (fr) * 2000-09-01 2002-03-07 Precision Cover Systems Dispositif d'acces reglable a une installation
EP1209291A1 (fr) * 2000-11-24 2002-05-29 J. + E. Cordes GmbH Dispositif pour localiser et ouvrir un cadre asphalté de regard de chaussée ou similaire
DE202008013095U1 (de) * 2008-10-06 2009-01-02 Buderus Kanalguss Gmbh Vorrichtung zur Justierung der Einbauhöhe von Schachtrahmen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114658039A (zh) * 2022-04-18 2022-06-24 日照市政工程有限公司 检查井防护盖板及其应用的路面沥青铺设施工方法

Also Published As

Publication number Publication date
WO2010137972A3 (fr) 2011-09-22
DE112010002091T5 (de) 2013-03-28
NL1036990C2 (nl) 2010-11-30

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