EP0953687A2 - Height compensation device between a manhole cover and a road surface - Google Patents

Abstract

The manhole cover has a separate upper portion (1) with conical sides, while the diameter of the top of this part of the manhole cover is greater than that of its underside. The top part of the manhole has outward-sloping conical metal sides (2) matching the slope of the sides (3) of the manhole cover. A sealing ring (12) fits into the top of the space (8) between the cover and the manhole sides. This defines the width of the space and height of the cover with respect to the top of the manhole. An inwards-extending flange (5) at the bottom of the support, for the upper part of the cover, has a flexible sealing lip (14).

Description

The invention relates to a device for height compensation between Manhole cover and road surface as with road surface material can be filled and integrated homogeneously into the road surface Manhole cover attachment, as used in the construction and repair of traffic areas with underlying supply and disposal routes is needed.

The incorporation of accesses to underground supply and disposal routes, for example water supply and sewage canals, message transmission routes and energy supply lines, is a recognized problem in the construction of traffic areas. The increasing weight of the means of transport and the more intensive use of the traffic areas increases the requirements for the suitability of Covering access shafts to underground supply and disposal routes and the surfaces of streets, paths and squares.
Inadequate fit inevitably leads to avoidable loads on the vehicles, the traffic areas and the access shafts in equal measure.
Efforts are therefore unmistakable to reliably solve the existing problem with the help of new technical means.
For example, DE U1 297 07 603 characterizes the manhole cover of a sewerage system in which the uppermost annular concrete molded part of the manhole made therefrom has an upper contact surface on which a support frame for an insertable manhole cover is arranged and in which at least one between the support frame and the contact surface permanently elastic support is provided, which consists at least of an organic reactive resin compound with shock-absorbing properties.
The application of this technical solution improves the maneuverability of the manhole cover, but still requires either supporting frames of different thicknesses and / or dimensionally precise foundations of the manholes erected if there are to be no height differences between the surface of the elastically shifted manhole cover and the surrounding road surface.

DE U1 94 01 426, on the other hand, describes a manhole cover filled with concrete for manhole covers that can be driven on, in which the inner surface of the cover shell has projections and / or concrete anchors for better connection of the concrete, wherein, for example, ribs projecting inwards are cast onto the upper edge of the cover shell, whose cross-section increases inwards.
With the help of this technical solution, it is possible in principle to produce the manhole cover filling together with the remaining base and wear layer of the surrounding traffic area. However, the required fit between the upper edge of the cover shell and the surrounding traffic area can only be achieved in that the storage of the cover shell already has the required dimensional accuracy. A further disadvantage of this solution is that particularly expensive arrangements have to be made to ensure that the filled manhole cover can be detached if access to the manhole is required.

Finally, DE C2 43 32 968 describes a round manhole cover, which consists of a shell open to the top and filled with concrete Cast iron consists of a surrounding support edge and in some areas Above the edge of the support upper, penetrated by ventilation openings Has surfaces, these surfaces in two opposite Edge areas of the cover lie and in each of the two surfaces at least two parallel to each other and to an axis of symmetry of the Cover longitudinal slots are arranged. This technical too The solution pursues the goal of the fitability of the manhole cover surface and to improve the surrounding traffic area. At the same time sufficient releasability of the manhole cover from its support be guaranteed. It is also crucial here that the Manhole cover support with regard to the intended position of the Road surface is precisely dimensionally fixed. Any change in the location of the Road surface, for example by milling or by applying new wear layers also requires the redesign of the Manhole cover support.

The object of the invention is therefore to create a technical Solution for reliable height compensation between manhole covers and road surface.

In addition to ensuring the necessary fit between the surfaces of the manhole cover and the surrounding traffic area, the indispensable detachability of the manhole cover from the traffic area should also be ensured for the case of need.
In addition to the stable and permanent integration of the manhole cover into the surrounding cover layer material, the aim is to achieve economical manufacture and reliable avoidance of drive-over noises.

The task is essentially according to the invention characteristic features of claims 1, 13 and 14 solved. Then the leveling between the surface of the Manhole cover and the road surface as with Fabrbahnbelagmatenal fillable and homogeneous in the road surface integrable manhole cover attachment. Of the For this purpose, the manhole cover attachment is made in several parts and at least exists from a circumferential collar and a fit insert. The circumferential collar points to the upper edge of the manhole cover fixable supports. In addition, the all-round collar has Support ring adjacent overlaps, which the lateral displacement of the prevent circumferential collar. In addition, between the circumferential collar and the fit insert channels for arranged if necessary introduction of fluid pressure medium. The fit walls of the circumferential collar and the fit Inserts are flared upwards. Besides, they are fit walls of the circumferential collar and the fit Use thermally and / or mechanically shortened. Are between the fit insert and the all-round collar Pressure chambers arranged, if necessary with fluid pressure media can be filled in.

With the help of this technical solution it is possible to apply Binder and / or cover layers on the traffic area and filling of the manhole cover in one continuous operation to make. Sufficiently dimensioned when used Manhole cover attachments can be subsequently adjusted for Height compensation between the surface of the manhole cover and the surrounding road surface are eliminated.

Special preparatory work when placing the manhole cover on the manhole to be kept accessible can be minimized.
The necessary adjustment work can be reduced to cutting off the protruding edge of the surrounding collar and the fit insert to the level of the road surface. As a result of the possibility of using fluid pressure media when loosening the fitable insert from the circumferential collar, access to the respective shaft can be made simple and rational if necessary. Mechanical and acoustic freedom from rattling is guaranteed both after filling the fitable insert with driving surface material and after reinserting the shaft cover insert that has been loosened in the meantime. In addition, a higher level of security against the improper removal of the manhole cover is achieved because of the special tools required for this. The maneuverability of the manhole cover can be ensured in the proposed way without having to accept a distinctive background noise.
Another advantage of the proposed technical solution is the possibility of using recycled building materials for the manufacture of the manhole cover attachment, for example mechanically stabilized waste plastics.

In one embodiment of the invention it is provided that the fixable One-piece support and at least the entire manhole cover to form partially overlapping component.

In a further embodiment, it is possible to fix the support as a multi-part and only partially covering the manhole cover Train the building element.

Furthermore, the device can be designed so that the rotating Collar and the fit insert made of a uniform material, preferably made of stabilized against thermal stress Plastic.

It is also provided that the channels and pressure chambers for the Inclusion of hydraulic or alternatively pneumatic Pressure media are formed.

It is also possible to design the manhole cover so that the fit insert a central hole for the admission of has mechanical release aids.

The device can also be used in a simple manner to improve the retrievability.
For this purpose, the closure cover for the central bore and / or the fitable walls of the circumferential collar and fitable insert are color-coded for the position.

In particular, when the use of fluid pressure media as a release aid is envisaged, it is advantageous to design the support between the circumferential collar and the fit insert as a flexible sealing lip system that forms the pressure chamber.
The flexible sealing lip system between the fit insert and the circumferential collar can also be designed as part of the circumferential collar.
Finally, it is also possible to form the flexible sealing lip system between the fit insert and the circumferential collar as part of the fit insert.

In a further embodiment of the invention it is provided that the overlaps preventing lateral movement of the manhole cover attachment as ring elements which are in contact with the support ring and can be widened in a wedge shape to train.

A special embodiment of the invention provides that the device for height compensation between the manhole cover and the road surface is designed as a one-piece manhole cover attachment that can be filled with road surface material and homogeneously integrated into the road surface.
For this purpose, the manhole cover attachment has a circumferential collar which is flared at the top and can be filled with driving surface material. The circumferential collar is equipped with overlaps that prevent lateral movement of the manhole cover attachment and abut against the support ring.
In addition, the manhole cover attachment is equipped with a floor resting on the manhole cover.
At least one tool holder reaching to the road surface is arranged on the bottom of the manhole cover attachment.

To ensure the desired solubility of the one-piece Manhole cover attachment is in the floor outside the area of the Manhole cover at least one zone designed as a predetermined breaking point arranged, which can take effect in the inevitable case. Generally, the manhole cover is of any geometric shape Customizable manhole neck.

A special embodiment of the invention provides a device for leveling the height between the manhole cover and the carriageway surface in the form of a manhole top which can be integrated into the carriageway surface and which is designed in several parts.
When building a new road or repairing a carriageway, an outer ring that extends up to the level of the binder course and has an upward conical opening is arranged on the support ring below the manhole cover. In addition, an attachment with ventilation slots is arranged on the manhole cover itself, these ventilation slots predominantly matching the openings in the manhole cover. Slidable sliding sleeves are arranged in the ventilation slots, which are first brought into a correspondingly lower position when binder layer material is applied. For filling the attachment with binder layer material, an intermediate ring which can be removed after filling is arranged between the outer ring and the attachment and, after its removal, forms an annular gap which is conically open above the shaft cover between the outer ring and the binder layer material. A sliding ring, which can be moved up to the desired height of the cover layer, is now arranged in the conical outer ring, into which an insert with fluid supply channels and upper and lower sealing lips is introduced. During the application of the cover layer material onto the carriageway, the cover layer material gets into this insert and forms a homogeneous surface, which only extends from the upper edge of the slide ring, from the upper edge of the insert with the closable openings of the fluid supply channels and from the ends of the ventilation slots arranged in and up to sliding sleeves reaching to the upper level of the cover layer material is interrupted. In the event of repairs, mechanical lifting aids can be inserted into the sliding sleeves, the shaft cover with the structure being able to be lifted off after the mechanical lifting aid has been turned approximately 90 °. To facilitate the removal of the manhole cover from the manhole structure, any fluid media can be introduced into the fluid feed channels.

By appropriate choice of materials or special Surface coating between the sliding ring and the insert can the lifting off of the manhole cover with the paved material also be relieved.

It is possible that profiles are arranged on the attachment, which serve the intimate connection of the binder layer material to be introduced with the attachment.
Furthermore, it is possible to arrange profiles on the inner surface of the insert, which are used for the intimate connection of the cover layer material with the insert.
To facilitate the introduction of the mechanical lifting aids, the ventilation slots and the sliding sleeves arranged therein can be provided with an oval or a rectangular cross section. This embodiment of the invention particularly takes into account the requirement to securely fix the road construction material at least in a form-fitting manner on the upper end of the shaft structure, to ensure the intimate integration of the device for shaft covering in the remaining part of the road structure, and at the same time to save time, costs and energy To enable access to the shaft structure in the event of repair or inspection.

The advantages of the invention are thus summarized in a basic simplification of the manufacture and maintenance of traffic areas with manhole covers integrated into the surfaces. Existing or emerging height differences can be compensated for or avoided with high productivity. In addition to economic advantages, significant reductions in noise emissions can be achieved when driving over the manhole cover attachments. Finally, the application of the proposed technical solution is a prerequisite for significantly minimizing mechanical damage to the rolling material on the one hand and to the traffic areas and to the shaft structures on the other.
The particular advantage of the technical solution according to the invention is that different materials, preferably components made of recyclable primary or secondary plastic, can be used for the individual components of the device. Such parts can be easily milled off with the surface of the highway in the event of repairs.

In this case, the cover is milled off using the mechanical lifting aid and if necessary with the support of Introducing appropriate fluid media from the shaft structure removed and by removing the sliding ring with further use of the outer ring, the device for height compensation between The manhole cover and road surface were rebuilt.

Fig. 1

die schematische Schnittdarstellung der Kontaktstelle zwischen umlaufendem Kragen und paßfähigem Einsatz mit am umlaufenden Kragen angeordneter elastischer Dichtlippe, Druckkammer und Zuführungskanal für fluide Druckmittel im paßfähigen Einsatz;

Fig. 2

die schematische Schnittdarstellung vom umlaufendem Kragen mit daran angeordneter elastischer Dichtlippe, Abstützung und Druckkammer sowie angeordnetem Zuführungskanal für fluide Druckmittel;

Fig. 3

die schematische Schnittdarstellung der Kontaktstelle zwischen umlaufendem Kragen und paßfähigem Einsatz, wobei das fixierbare Auflager als Ringelement ausgebildet ist;

Fig. 4

die schematische Schnittdarstellung analog Fig. 3 mit einem bis zur Fahrbahnoberfläche reichenden umlaufenden Kragen und speziellem Dichtlippensystem am paßfähigem Einsatz;

Fig. 5

die schematische Schnittdarstellung eines einteiligen Schachtdeckelaufsatzes.

Fig. 6

die schematische Schnittdarstellung eines bis zum Auflagering freigelegten Schachtbauwerks mit am Auflagering angeordnetem Außenring;

Fig. 7

die schematische Schnittdarstellung eines freigelegten Schachthalses mit daran angeordnetem Außenring und auf dem Schachtdeckel aufgesetztem Aufsatz mit Belüftungsschlitzen und Schiebehülsen;

Fig. 8

die schematische Schnittdarstellung dermit Binderschichtmaterial ausgefüllten Teile der Vorrichtung unter Einsatz des zwischen Außenring und Aufsatz angeordnetem entnehmbaren Zwischenrings;

Fig. 9

die schematische Schnittdarstellung der Vorrichtung an einem Schachtbauwerk mit bis zur Fahrbahnoberfläche verschieblichen Schiebering;

Fig. 10

die schematische Schnittdarstellung der unter Anwendung eines Einsatzes mit Deckschichtmaterial fertiggestellten Fahrbahn im Bereich eines Schachtbauwerks;

Fig. 11

die schematische Schnittdarstellung der fertiggestellten Fahrbahn im Bereich einer Schachtabdeckung im Zustand des Abhebens der Vorrichtung mit Hilfe mechanischer Hebehilfen unter Zusatz von das Abheben unterstützenden fluiden Medien;

Fig. 12

den Ausschnitt einer schematischen Schnittdarstellung der Vorrichtung an einer Schachtabdeckung unter Einsatz von Außenring, Aufsatz mit Belüftungsschlitz und Schiebehülse (in zwei Ausführungsvarianten), Schiebering und Einsatz mit unteren und oberen Dichtlippen sowie Fluidzuführungkanälen.

The invention will be explained in more detail below using exemplary embodiments.
The attached drawing shows:

Fig. 1

the schematic sectional view of the contact point between the circumferential collar and a fit insert with an elastic sealing lip arranged on the circumferential collar, pressure chamber and feed channel for fluid pressure medium in the fit insert;

Fig. 2

the schematic sectional view of the circumferential collar with an elastic sealing lip arranged thereon, support and pressure chamber and arranged feed channel for fluid pressure medium;

Fig. 3

the schematic sectional view of the contact point between the circumferential collar and fit insert, wherein the fixable support is designed as a ring element;

Fig. 4

the schematic sectional view analogous to FIG. 3 with a circumferential collar reaching to the road surface and a special sealing lip system on a suitable insert;

Fig. 5

the schematic sectional view of a one-piece manhole cover attachment.

Fig. 6

the schematic sectional view of a shaft structure exposed to the support ring with an outer ring arranged on the support ring;

Fig. 7

the schematic sectional view of an exposed manhole neck with an outer ring arranged thereon and an attachment placed on the manhole cover with ventilation slots and sliding sleeves;

Fig. 8

the schematic sectional view of the parts of the device filled with binder layer material using the removable intermediate ring arranged between the outer ring and the attachment;

Fig. 9

the schematic sectional view of the device on a shaft structure with sliding ring movable up to the road surface;

Fig. 10

the schematic sectional view of the roadway made using an insert with top layer material in the area of a shaft structure;

Fig. 11

the schematic sectional view of the finished roadway in the area of a manhole cover in the state of lifting the device with the aid of mechanical lifting aids with the addition of fluid media supporting the lifting;

Fig. 12

the section of a schematic sectional view of the device on a manhole cover using the outer ring, attachment with ventilation slot and sliding sleeve (in two versions), sliding ring and insert with lower and upper sealing lips and fluid supply channels.

Example 1:

1, there is a device for height compensation between Manhole cover (4) and road surface as manhole cover attachment 1 from a circumferential collar 2 and a fit insert 3. The circumferential collar 2 has a fixable support 5, which is annular rests on the upper edge of the shaft cover 4.

The circumferential collar 2 also has a cylindrical overlap 7, which rests on the support ring 6 and secures the manhole cover attachment 1 against lateral displacement. The fixable support 5 has a bent annular element which forms a pressure chamber 10 as a flexible sealing lip system 14 between the circumferential collar 2 and the fit insert 3. For example, four channels 8 are arranged on the circumference of the outer edge of the fitable insert 3, via which fluid pressure media, preferably water or compressed air, can be supplied to the pressure chamber 10 in order to release the fitable insert 3 from the construction of the circumferential collar 2 to effect.
A thermally stabilized and colored thermoplastic material made from recycling material was used for the construction of the manhole cover attachment 1. In the overall dimensions, the manhole cover attachment 1 has a height which exceeds the difference between the existing upper edge of the manhole cover and the desired road surface by approximately 100 mm.
Before the binder and / or wear layers are applied to the traffic area surrounding the manhole cover, the manhole cover attachment is shortened to the resulting differential dimension in the region of the circumferentially flared collar and the fit insert, in order then to be incorporated into the manufacture of the road surface when installed .
The channels 8 for the supply of fluid pressure medium to the pressure chamber 10 have previously been closed with colored caps 12 in order to facilitate the position detection if necessary.
The manhole cover attachment 1, which is fully integrated in the Fabrbahn structure, no longer represents an inhomogeneity for rolling traffic, leads to a reduction in noise emissions and improves the stability of the manhole construction and the surrounding traffic area.

Example 2:

Similar to Example 1, there is a manhole cover attachment 1 according to FIG. 2 from a circumferential collar 2. The circumferential collar 2 has a circular shaped fixable support 5 and on the circumference distributes at least three pieces of overlaps 7 which rest on the support ring 6 and prevent the manhole cover attachment from moving sideways.

At the bottom of the manhole cover there are elastic straps all around Arranged components that act as a flexible sealing lip system 14. This sealing lip system 14 includes a circular ring Pressure chamber 10, which in turn by at least two pieces on Circumferentially distributed channels 8 are supplied with pressure media can be. The channels 8 are in the circumferential collar 2 educated.

Example 3:

As in exemplary embodiment 1, according to FIGS. 3 and 4, a manhole cover attachment 1 consists of a circumferential collar 2 and a fitable insert 3. In a first embodiment according to FIG. 3, the circumferential collar 2 has, in addition to an annular overlap 7 resting on the support ring 6, a fixable support 5, which rests fully on the upper manhole cover 4. The annular overlap 7 is designed as a ring element 15 which is flared upwards and into which the downwardly conically tapered end of the fit insert 3 engages. This end, together with the ring element 15 of the circumferential collar 2, forms the flexible sealing lip system 14, which, if necessary, includes a pressure chamber 10 receiving fluid pressure medium.
In the wall construction of the fitable insert 3, for example, a total of two channels 8 are incorporated, which are connected to the pressure chamber 10.

According to the further embodiment variant marked with FIG. 4, the circumferential collar 2 is first positioned on the support ring 6, the elastic overlaps 7 positioning the circumferential collar 2 on the support ring 6.
The fit insert 3 then inserted into the circumferential collar 2 forms with its circular lower end an annular wedge which engages in the ring element 15 of the circumferential collar 2 and positions the manhole cover attachment 1 firmly at the upper edge of the manhole cover 4. The ring wedge of the fitable insert 3 is at the same time designed as a flexible sealing lip system 14, so that, if necessary, the introduction of fluid pressure media that supports the lifting of the fitable insert 3 can be made possible via the channels 8 formed in the fitable insert 3.

The support 13 of the manhole cover attachment 1 on the upper edge of the Manhole cover 4 takes place over the bottom of the fit Mission 3.

Example 4:

5, the manhole cover attachment 1 is formed in one piece. He owns a bottom 16, the fixable support 5 on the upper edge of the Manhole cover 4 forms. The ring-shaped overlap 7 is flexibly designed and lies on the support ring 6. This ensures that the manhole cover 1 even with low dimensional accuracy Shaft construction sufficient against lateral displacement when Application of the road layers is secured. In the bottom 16 of the one-piece Manhole cover attachments are incorporated in a circular shape, the necessary when exposing the top of the required Manhole cover 4 act as a predetermined breaking point 18. For the mechanical Removal from the traffic area has the manhole cover attachment 1 central bore 11, which is required for the tool holder 17th is formed and in which a colored and removable Cap 12 is inserted. If the upper one needs to be exposed The edge of the manhole cover 4 is therefore too large Adhesion of the upwardly flared edge of the Manhole cover attachment 1 in the surrounding pavement material for mechanical destruction of the manhole cover attachment, which leads to renewed Insert a one-piece manhole cover attachment before restoring gives rise to the traffic area.

Example 5:

According to FIGS. 6 to 12, there is a device for height compensation between the shaft cover and the road surface from an am Support ring 6 arranged up to the upper level of the binder layer reaching outer ring 19, which extends conically with about 3 ° upwards is executed. The outer ring 19 lies on the support ring by means of a cylindrical part bent at the top by friction.

Both the outer ring 19 and the other parts of the device are made of thermoplastic. The inner surface of the sliding sliding ring 24 and the outer surface of the insert 25 are additionally coated with a material which improves the slidability. An attachment 20 is arranged on the manhole cover, the edge bent downward enclosing the manhole cover and at the same time covering the upwardly directed cylindrical part of the outer ring 19.
The attachment 20 contains ventilation slots 21 which correspond in position to the ventilation slots of the manhole cover. In the ventilation slots 21 sliding sleeves 22 are arranged, which are first inserted into the ventilation slots to such an extent that the upper edges of the sliding sleeves 22 are approximately at the level of the planned upper edge of the binder layer to be applied. Then a removable intermediate ring 23 with a V-shaped cross section is inserted into the outer ring 19 such that the upper edge of the removable intermediate ring 23 also extends to the intended height of the binder layer. After the binder layer has been applied, this intermediate ring 23 is removed. At the same time, the sliding sleeves 22 are pulled out of the ventilation slots 21 to such an extent that the upper edges of the sliding sleeves correspond to the intended position of the road surface.
Then a sliding sliding ring 24 is inserted into the conical outer ring 19 and also aligned with its upper edge to the intended upper edge of the intended road surface. In this sliding sliding ring 24, the insert 25 is inserted, which contains in its lower region an annular lower sealing lip 27 which bears on the outer ring 19 and furthermore contains an upper annular sealing lip 28 which bears on the attachment 20. The insert 25 here contains, for example, four pieces of fluid supply channels 8 which are uniformly distributed around the circumference of the insert 25 and by means of which, if necessary, pressurized fluid auxiliary media, for example compressed air or pressure fluid, can be introduced.
On the top 20, for example, nail-shaped profiles 29 are arranged, which serve the intimate bond of the binder layer material with the top 20.
On the inner surface of the insert 25, web-shaped profiles 30 are also arranged, which serve the intimate connection of the cover layer material with the insert 25.

Reference list

1

- Manhole cover attachment

2nd

- all-round collar

3rd

- suitable use

4th

- upper edge of the manhole cover

5

- fixable support

6

- support ring

7

- Assault

8th

- Channel

9

- fit wall

10th

- pressure chamber

11

- central hole

12th

- cover

13

- support

14

- flexible sealing lip system

15

- ring element

16

- Bottom of the one-piece manhole cover attachment

17th

- tool holder

18th

- predetermined breaking point

19th

- outer ring

20th

- essay

21

- ventilation slot

22

- Slidable sleeve

23

- reusable intermediate ring

24th

- Height adjustable sliding ring

25th

- Commitment

26

- mechanical lifting aid

27

- lower sealing lips

28

- upper sealing lip

29

- Profiling on the top of the attachment

30th

- Profiling on the inside of the insert

Claims (19)

Device for leveling the height between the manhole cover and the road surface as a manhole cover attachment which can be filled with road surface material and is homogeneous m the road surface, characterized in that that the manhole cover attachment (1) is constructed in several parts and consists at least of a circumferential collar (2) and a fitable insert (3), that the circumferential collar (2) has fixable supports (5) on the upper edge of the slot cover (4), that the circumferential collar (2) has the overlaps (7) connecting the lateral displacement and abutting on the support ring (6), that channels (8) permitting the introduction of fluid pressure media are arranged between the circumferential collar (2) and the fitable insert (3), that the fitable walls (9) of the circumferential collar (2) and the fitable insert (3) are flared upwards, that the fit walls (9) of the circumferential collar (2) and the fit insert (3) can be shortened thermally or mechanically and that pressure chambers (10) which can be filled with fluid pressure media are arranged between a suitable insert (3) and a circumferential collar (2). Device according to claim 1, characterized in that the fixable support (5) is designed as a one-piece component which at least partially covers the entire manhole cover (4). Device according to claim 1, characterized in that the fixable support (5) is designed as a multi-part structural element which only partially covers the manhole cover (4). Device according to claims 1 to 3, characterized in that the circumferential collar (2) and the fit insert (3) consist of a uniform material, preferably of plastic stabilized against thermal stress. Device according to claims 1 to 4, characterized in that the channels (8) and pressure chambers (10) are designed for receiving hydraulic pressure media. Device according to one of claims 1 to 4, characterized in that the channels (8) and pressure chambers (10) are designed to receive pneumatic pressure means. Device according to one of claims 1 to 6, characterized in that the fitable insert (3) has a central bore (11) for receiving mechanical release aids. Device according to one of claims 1 to 7, characterized in that the sealing cover (12) for the central bore (11) and / or the fitable walls (9) of the circumferential collar (2) and fitable insert (3) are color-coded to indicate their position. Device according to one of claims 1 to 8, characterized in that the support (13) between the circumferential collar (2) and the fitable insert (3) is designed as a pressure chamber-forming flexible sealing lip system (14). Device according to claim 9, characterized in that the flexible sealing lip system (14) between the fitable insert (3) and the circumferential collar (2) is formed as part of the circumferential collar (2). Device according to claim 9, characterized in that the flexible sealing lip system (14) between the fitable insert (3) and the circumferential collar (2) is formed as part of the fitable insert (3). Device according to one of claims 1 to 11, characterized in that the overlaps (7) connecting the lateral displacement of the manhole cover attachment (1) are designed as ring elements (15) which are in contact with the support ring (6) and can be widened in a wedge shape. Device for leveling the height between the manhole cover and the road surface as a manhole cover attachment which can be filled with road surface material and is homogeneously integrable into the road surface , characterized in that that the manhole cover attachment (1) is made in one piece, that the manhole cover attachment (1) has a circumferential collar (2) which is flared at the top and can be filled with road surface material, that the circumferential collar (2) is equipped with overlaps (7) which prevent lateral movement of the manhole cover attachment (1) and abut against the support ring (6), that the manhole cover attachment (1) is equipped with a base (16) resting on the manhole cover, that at least one tool holder (17) reaching to the road surface is arranged on the bottom (16) of the manhole cover attachment (1) and that at least one zone designed as a predetermined breaking point (18) is arranged in the floor (16) outside the region of the manhole cover. Device for leveling the height between the manhole cover and the road surface as a manhole cover attachment which can be filled with road surface material and is homogeneously integrable into the road surface, characterized in that that the device for height compensation is constructed in several parts, that an outer ring (19) protruding into the level of the binder layer is arranged on the support ring (6) with a taper open at the top, that an attachment (20) with ventilation slots (21) and sliding sleeves (22) is arranged on the manhole cover, that an intermediate ring (23), which serves to form an upwardly open conical annular gap and can be removed after filling, is arranged between the outer ring (19) and the attachment (20) when the attachment (20) is filled with binder layer material, that a sliding ring (24) which is displaceable up to the desired height of the cover layer is arranged in the conical outer ring (19) and that an insert (25) serving for receiving cover layer material and insertable into the sliding ring (24) is arranged with the fluid supply channels (8) and the upper and lower sealing lips (27, 28). Device according to claim 14, characterized in that mechanical lifting aids (26) which can be inserted into the sliding sleeves (22) and serve to lift the manhole cover after approximately 90 ° rotation can be arranged. Device according to one of claims 14 and 15, characterized in that profilings (29) which serve for the intimate connection of the binder layer material to be introduced with the attachment (20) are arranged on the attachment (20). Device according to one of claims 14 to 16, characterized in that profiles (30) serving for the intimate connection of the cover layer material with the insert (25) are arranged on the inner surface of the insert (25). Device according to one of claims 14 to 17, characterized in that the ventilation slots (21) and the sliding sleeves (22) are provided with an oval cross section. Device according to one of claims 14 to 17, characterized in that the ventilation slots (21) and the sliding sleeves (22) are equipped with a rectangular cross section.

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