DE102009053179A1 - Method for manufacturing manhole bottom part from concrete with individual channels, involves placing individually designed channel negative on inner cap, where inner cap serves as mold core - Google Patents

Abstract

The method involves placing an individually designed channel negative (7) on an inner cap, where the inner cap (4) serves as a mold core. A flat or slightly inclined surface with bulging elongated area is provided which forms the channel. The channel negative is individually prepared as foam- or foamed polystyrene part. A prefabricated concrete mixture is filled in the mold and the molded manhole bottom part is formed. An independent claim is also included for a device for manufacturing a manhole bottom from concrete with individual channels.

Description

Technical area

The invention relates to a method for producing manhole bases, in particular according to the preamble of claim 1, an apparatus for producing manhole bases according to the preamble of claim 5 and such a manhole base.

State of the art

Manhole bases are typically used as the bottom of a manhole where various manhole parts are placed one on top of another and allow access to sewers or sewer passages. Thus, one or more manhole rings is placed on the manhole base in the usual way, and as the upper conclusion, a manhole element and / or a manhole cover element is placed on top of these manhole rings. By means of an openable lid then access to the channel can be made possible. Such manhole bases are known.

Conventionally, the manhole bases have flumes in order to optimally form a flow connection between connection openings and channels and pipes connected thereto.

The manhole bases are typically individual pieces, which are produced according to individual specifications, so that they are adapted to the topographical conditions in the construction site and the channels laid there. Each manhole base is manufactured individually and the required channel is adapted to it individually.

Designing the channel is a complex process, because both the connection openings and the respective gutters of the channel, with their dimensions, diameters, angles and inclinations, have to be created individually so that they fit the environment.

Today, the manhole bases are made without channels with connection openings and then the gutter by hand with concrete introduced. This process is very labor intensive and allows virtually no automation or rationalization.

Furthermore, manhole bases are through the EP 1 627 716 A2 known. This document discloses a fitting for forming a channel of a manhole base. In this case, a negative mold of the channel is composed of several moldings and placed on a floor to be used in a mold, which is then filled with concrete. The moldings are hollow and are assembled depending on the design of the channel and connected to the ground. This allows individual manhole bases to be formed.

However, the assembly process is subject to a certain error rate and a certain extra effort.

The WO 2004/091877 A1 discloses a method of manufacturing a shaft bottom in which a molded article is formed from a plurality of molded pieces having a lost core. In this case, the shaped pieces are assembled to form the molded body, that the individual channel can be generated. In this case, the shaped pieces can be assembled differently in different moldings and be reused accordingly for the production of different moldings. However, here as well, the composition process is subject to a certain error rate and a certain additional effort.

In BWI - Concrete Plant International 5/2009 Page 148 ff. a manufacturing method for manhole bases has become known in which a monolithic manufactured manhole base is machined by milling to introduce the flume. This results in a considerable material overhead and requires a considerable manufacturing effort with high investment for the milling device.

The DE 103 17 321 B4 discloses a method of making a concrete manhole base with individual flume, in which an individual shaped body is assembled from a plurality of straight or arcuate segment blanks. The assembly process of the blanks is also subject to a certain error rate and also means a certain extra effort.

DESCRIPTION OF THE INVENTION: Problem, Solution, Advantages

It is the object of the invention to provide a method for the production of manhole bases, which allows a rapid and cost-effective production of manhole bases. Furthermore, it is the object to provide a device for the production of manhole bases, by means of which manhole bases can be produced in a simple and cost-effective manner.

This is achieved with the features of claim 1, wherein a method is provided for producing manhole bases made of concrete with individual flume, in which an inner hat as a mold core and an outer sheath serve as a sheath, wherein on the inner hat an individual designed Geregegativ is applied, wherein a substantially flat or slightly inclined surface is provided with bulging elongated areas which form the channel in concrete, the Gerinnenegativ is prepared individually as a foam or Styrofoam, a prefabricated concrete mix is poured into the mold and then the shaped manhole base is formed.

It is particularly advantageous if the foam or polystyrene part is manufactured individually from a plate or a block of the corresponding material. This allows a quick and inexpensive production of the clotting negative, which can either be disposed of after use or stored for eventual later reuse.

Advantageously, the Gerinnenegativ if necessary individually according to predetermined data, such as CAD data, milled or cut.

It is particularly advantageous if shaft feed storage bodies are fastened to the end regions of the bulged elongate regions of the channel. These are used to clear the openings of the manhole base for connecting channels or pipes. Advantageously, these Aussparkörper graded in radius to produce a stepped opening can, in which a seal can be introduced and in which a sewer pipe can be used.

So that the manure storage Aussparkörper not lost, they are advantageously attached to the Gerinnenegativ by means of pins or shafts.

The object with regard to the device is achieved with a device for producing manhole bases made of concrete with individual flume, in which an inner hat as mold core and an outer shell are assembled as a mold shell, wherein on the inner hat an individually designed Gerinnenegativ can be placed, wherein a substantially flat or slightly inclined surface is provided with bulged elongated areas, which form the channel in concrete, the Gerinnenegativ is individually prepared as a foam or Styrofoam part.

In this case, it is advantageous if, if required, the channel negative can be individually milled and / or cut according to specifiable data, such as CAD data.

It is advantageous if at the end portions of the bulging elongated areas of the channel coaming chute Auswerfer are attachable. These form recesses in the filled concrete for connections of channels or pipes.

To secure the position, the manure chute opening bodies are fastened to the chute negative by means of pins or shafts.

It is advantageous if the Schachtfutteraussparkörper along their axial extent have a stepped radius.

In particular, it is advantageous if, for use of the device, this is filled with a concrete for producing the manhole bases, wherein the concrete after a normal concrete DIN EN 206-1 / DIN 1045-2 and / or the compressive strength class is C40 / 50 or higher.

Brief description of the drawings

The invention will be explained in more detail on the basis of an embodiment with reference to the drawings. Show it:

1 a view of such a device in half section,

2 a section of the device with Gerinnenegativ,

3 a section through the arrangement of 2 .

4 a section through the device with bottom plate,

5 a section through the arrangement of 1 , and

6 a view of an opening in section with inserted seal.

Preferred embodiment of the invention

The 1 to 5 show schematically a device 100 for producing concrete manhole bases with an individual flume. It shows 1 a view of such a device in half section. The 2 shows a section of the device with Gerinnenegativ. The 3 shows a section through the arrangement of 2 , The 4 shows a section through the device with bottom plate. The 5 shows a section through the arrangement of 1 ,

In the method according to the invention, the device 100 assembled to produce manhole bases made of concrete with an individual channel according to the following description, filled with concrete and the resulting manhole base is then removed from the mold and is dimensionally stable for curing and further processing.

The manufacturing process is initiated by having a base cross 1 or the like on a vibrating table, not shown, clamped non-positively or positively secured. This then facilitates the better shaking and solidification of the concrete of the manhole base in the mold. By means of the basic cross 1 Subsequently, the device for producing the manhole base is constructed or held on the vibrating table. Also, the basic cross 1 serve the transport and / or the turn of the device.

Subsequently, the so-called inner hat is advantageous 4 with the help of centering 3 on the base cross 1 set and attached to it. The inner hat is an at least cylindrical shaped element which forms the inner shape to produce the central recess of the manhole base when the mold is filled with concrete. Preferably, the inner hat is hollow cylindrical and made of steel.

Subsequently, the manhole base sleeve 2 over the inner hat 4 set and locked in the appropriate for the manhole to be manufactured part height h. Characterized the inner height h of the manhole base is defined apart from the channel.

Now the outer shape 5 over the inner hat 4 and the manhole base sleeve 2 placed and non-positively with the inner hat 4 connected. The outer shape is essentially constructed as a cylindrical wall made of metal or steel, which preferably at least above and below radially projecting flanges 5a has for connection or attachment of the wall of the outer mold 5 with other elements of the device.

Then the unit becomes inner hat 4 , Outer shape 5 and sleeve 2 with the basic cross 1 braced.

The height H of the outer shape 5 is individually adapted to the manhole base to be manufactured. Should the height of the outer shape 5 not sufficient, so for example by means of an outer mold increase 6 the non-positive or positive fit with the outer shape 5 can be connected, the height H are set to the nominal size. Here is the outer mold increase 6 with the outer shape 5 for example, in the area of the radially projecting flanges 5a . 6a screwed.

On the inner hat 4 becomes a negative channel shape 7 placed. This Gerinnenegativform 7 Advantageously, a substantially flat or inwardly towards the channel forming the elongated curved areas rising surface 8th and bulging elongated areas 9 on, which produce the respective channels in the manhole base. The area of the underside of the channel negative mold 7 is essentially flat and lies on the top of the inner hat 4 on.

At the radially outer ends 9a the bulging elongated areas 9 are essentially cylindrical Schachtfutteraussparkörper 10 fastened, which later form recesses or openings in the wall of the manhole base, to form connections for the adjoining in or outgoing channels in the wall of the manhole base.

The negative channel shape 7 is designed as a one-piece mold. Particularly preferably, the negative mold 7 individually designed according to the individual specifications of the topographical situation at the construction site and manufactured in one piece, preferably from a foam material or styrofoam. For this purpose, for example, a foam material plate or a Styrofoam plate can be processed by means of a milling or cutting device such that it receives the desired negative mold in order to produce the channel in the intended form can.

The clotting negative 7 , which may preferably be made of foam material or styrofoam and advantageously further individually manufactured in one piece according to CAD data, will in the next production step with the Schachtfutteraussparkörpern 10 with the help of centering elements 11 Mistake. These centering elements 11 , such as centering pins or shafts, become openings in the manure chute body 10 and in the channel negative 7 introduced and connect each of the manure storage Aussparkörper 10 and the negative channel 7 , so that when filling the concrete, the Schachtfutteraussparkörper 10 do not swim, but stay connected.

The shaft feed storage body 10 are essentially cylindrical elements with optionally stepped diameter D as a function of the axial extent, see 5 in order to produce a stepped opening in the manhole base wall. At their end are the manure chute 10 rounded to the cylindrical outer shape 5 to be able to fit and with their end face 17 on the inner wall 18 to be able to bear the outer shape.

Subsequently, the ready equipped Gerinnenegativ 7 on the upper surface of the inner hat 4 laid and there with the help of a side edge 12 of the hat 4 centered. The side edge is advantageous 12 of the hat 4 standing at least about 10 mm high, so that the gland negative 7 is fixed laterally.

The shaft feed storage body 10 will continue to be beneficial with the help of fixation rods 13 and fixation plates 14 fixed against the boil.

After the device 100 is mounted for the production of an individual manhole base, this can be filled with concrete. Advantageously, the shape with a normal concrete after DIN EN 206-1 / DIN 1045-2 and the compressive strength class C40 / 50 or higher.

With the help of a vibrating table, the concrete is then compacted after filling. After consolidation, the fixation rods become 13 and plates 14 dismantled and the hollow bodies formed there are advantageously recompressed by means of a vibrating table.

The finished filled mold is then abgeschedibt smoothly, for example, with a float.

The finished filled mold is in a further process step with a bottom plate 15 covered and this is with the outside shape 5 braced, for example, with Bodenklemmpratzen 16 ,

Subsequently, the tension of the unit inner hat 4 , Outer shape 5 and sleeve 2 with the basic cross 1 will now be solved. The complete unit is then with a turning bar from the base cross 1 lifted off and rotated 180 °. After turning, the device becomes 100 on the bottom plate 15 switched off.

Subsequently, the connection between inner hat 4 and outer shape 5 solved, then the inner hat 4 pulled out of shape with a crane.

Then the Bodenklemmpratzen be solved and the outer shape 5 is pulled with the crane over the finished manhole base.

After a drying time of about 1 to 4 hours, depending on the weather, the Schachtfutteraussparkörper 10 and the centering shafts 11 be pulled out of the manhole base, for example, by turning it slightly.

Subsequently also the Gerinnenegativ 7 be taken upwards from the manhole base. The well-finished manhole base can be reworked as needed, such as at transitions and ridges. Subsequently, the appropriate wedge gaskets can be glued into the thus existing manhole base, such as with a PU concrete adhesive.

Then the manhole base can be marked according to the standard with the manhole data.

The further curing or drying is then carried out and after about 24-36 hours depending on the weather, the manhole base can be used and advantageously delivered to the customer.

The 6 schematically shows a wall 19 of the manhole base 20 with an opening 21 for connecting ducts or pipes, the opening 21 graded in diameter and with an inserted seal 22 is provided. The seal is with an adhesive layer 23 on the inside of the opening 21 glued.

LIST OF REFERENCE NUMBERS

1

basic cross

2

Manhole base sleeve

3

centering

4

Inner hat, mold core

5

Outer shape, molded sheath

5a

flange

6

Outer shape increasing

6a

flange

7

Gerinnenegativ

8th

Surface, flat or inclined

9

bulging elongated areas

9a

Ends of the areas

10

Schachtfutteraussparkörper

11

centering

12

side edge

13

fixation

14

fixing

15

baseplate

16

Bodenklemmpratze

17

end face

18

inner wall

19

wall

20

Manhole base

21

opening

22

poetry

23

adhesive layer

100

contraption

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1627716 A2 [0007]
• WO 2004/091877 A1 [0009]
• DE 10317321 B4 [0011]

Cited non-patent literature

• BWI - Concrete Plant International 5/2009 Page 148 ff. [0010]
• DIN EN 206-1 [0023]
• DIN 1045-2 [0023]
• DIN EN 206-1 [0046]
• DIN 1045-2 [0046]

Claims (10)

A method for producing manhole base sections made of concrete with individual channel, in which an inner hat as a mold core and an outer shell serve as a mold jacket, wherein on the inner hat an individually designed Gerinnenegativ is placed, wherein a substantially flat or slightly inclined surface is provided with bulged elongated areas , which form the channel in concrete, characterized in that the channel negative is prepared individually as a foam or Styrofoam part, a prefabricated concrete mixture is poured into the mold and then the shaped manhole base is formed. A method according to claim 1, characterized in that the channel negative is individually milled or cut to CAD data. A method according to claim 1, characterized in that at the end portions of the bulging elongated portions of the channel coaming chute Auswerfer be attached. A method according to claim 1, characterized in that the Schachtfutteraussparkörper be attached to the Gerinnenegativ by means of pins or shafts. Device for producing manhole bases made of concrete with individual flume, in which an inner hat is assembled as a mold core and an outer shell as a mold shell, wherein on the inner hat an individually designed Gerinnenegativ can be placed, with a substantially flat or slightly inclined surface provided with bulged elongated areas is that form the channel in concrete, characterized in that the channel negative is individually prepared as a foam or Styrofoam. Apparatus according to claim 5, characterized in that the channel negative is individually milled or cut to CAD data. Apparatus according to claim 5 or 6, characterized in that at the end regions of the bulging elongated regions of the channel groove Schachtfutteraussparkörper be fastened. Apparatus according to claim 7, characterized in that the Schachtfutteraussparkörper be attached to the Gerinnenegativ by means of pins or shafts. Apparatus according to claim 7 or 8, characterized in that the Schachtfutteraussparkörper along their axial extent have a stepped radius. Use of the device according to one of the preceding claims 5 to 9, with a concrete which is filled into the mold for producing the manhole bases, wherein the concrete is a normal concrete according to DIN EN 206-1 / DIN 1045-2 and / or the compressive strength class C40 / 50 or higher.

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