AT521671B1 - Pipe arrangement, in particular casing arrangement - Google Patents

Abstract

The invention relates to a pipe arrangement (1), in particular designed as a casing pipe arrangement, comprising a first pipe (10) with socket (11), a second pipe (30) which can be inserted into the socket (11) of the first pipe (10), and at least one Locking ring (32) as a stop for the first tube (10), the at least one locking ring (32) being placed on the second tube (30) and being removable to shorten the length of the tube arrangement (1) so that the second tube (30) can be further inserted into the first tube (10).

Description

description

PIPE ARRANGEMENT, IN PARTICULAR LINING PIPE ARRANGEMENT

The invention relates to a pipe arrangement, in particular designed as a casing pipe arrangement. Lining pipes are also known as manhole liners or pipe penetrations.

For example, casing pipes made of fiber cement are known from the prior art, which keep a through opening free after pouring with, for example, concrete in a wall or floor element. A line can then be passed through this and sealed against the casing.

Other developments show that the casings are made of plastic material instead of fiber cement. The document WO 2007/082364 A1 relates, for example, to a bushing with a tubular element made of two sleeves which can be displaced one inside the other and which can be locked in different relative positions by means of form-fitting elements.

The document US 5,405,119 A also relates to a bushing with two sleeves that can be displaced one inside the other, with a clamp being arranged on the inner of the two sleeves, which represents a stop for sliding the outer sleeve. A rubber band pulls the outer sleeve into this stop. However, it is not possible to change the length of the pipe without tools.

[0005] The document EP 2 899 332 B1 relates to a two-part chute which, with a lock between the two chute parts, enables the length to be adjusted. The two parts are connected to one another without a seal, which can lead to concrete milk penetrating.

The document EP 2 338 658 B1 relates to sealing packings from which a casing pipe can be produced by connecting to a pipe section of any length. A sealant is provided between the sealing package and the connecting pipe. However, manual cutting of the pipe is necessary here.

The invention is based on the object of specifying a pipe arrangement, in particular designed as a casing pipe arrangement, which is easy to assemble with a simple structure and simple inexpensive manufacturability and enables a permanently tight implementation.

In particular, the pipe arrangement should be able to be adjusted to different lengths without tools and / or be sealed against the ingress of concrete milk.

The invention is achieved by the features of the independent claim. The dependent claims relate to preferred embodiments of the invention.

The object is thus achieved by a pipe arrangement. The pipe arrangement is designed in particular as a casing pipe arrangement. The casing pipe arrangement is used, for example, for pouring concrete in a wall or floor element to keep a passage opening free.

The tube assembly includes a first tube and a second tube. The first pipe has a socket. The second pipe can be inserted into this socket of the first pipe.

Furthermore, the pipe arrangement comprises at least one locking ring as a stop for the first pipe. The at least one locking ring is on the second tube. When the two tubes are plugged into one another, the first tube is against the locking ring. As a result, the locking ring determines the length of the pipe arrangement. To shorten the length of the pipe arrangement, the at least one locking ring can be removed so that after the locking ring has been removed, the tube can be inserted further into the first tube and is in contact with a second locking ring or with an end stop.

In a preferred embodiment it is provided that the second tube on the outer diameter or the first tube on the inner diameter has an end stop for the other tube

having, wherein the end stop determines the shortest length of the pipe arrangement with removal of all locking rings.

For the sake of simplicity, the design of a locking ring is usually described below. However, it is always preferably provided that several locking rings are used and the several locking rings are designed and / or arranged according to the description of the one locking ring.

For the axial fixation of the individual locking ring on the second tube, different variants are preferably provided:

According to a first variant, the locking ring is arranged in a groove in the second ring. The groove can correspond to the width of the locking ring. Alternatively, it is provided that the locking ring has an annular extension pointing radially inward. This extension is made much narrower than the remainder of the locking ring. Accordingly, the groove for axially fixing the locking ring can also be designed correspondingly narrow. In this case, only the radially inwardly pointing extension of the locking ring then sits in the groove.

According to a further variant it is provided that the second ring has a shoulder on which the corresponding locking ring rests. Ultimately, the locking ring only has to prevent the two tubes from being pushed together further axially in a form-fitting manner. In the opposite direction, namely in the direction of pulling the two tubes apart, the locking ring does not necessarily have to be secured in a form-fitting manner. It is therefore also sufficient that the corresponding locking ring rests against a shoulder of the second ring.

In addition, it is possible that the locking ring rests against a further locking ring for its axial fixation. This further locking ring is then axially fixed accordingly in a groove, on a shoulder or on yet another locking ring.

The pipe arrangement preferably comprises one, two, three, four or five of the locking rings. By removing the appropriate number of locking rings, the length of the pipe assembly can be shortened gradually.

[0020] It is preferably provided that the locking ring can be pulled off without tools. The locking ring can be gripped by hand by the fitter and, in particular, pulled off perpendicular to the axial extent of the pipe arrangement.

[0021] The locking ring particularly preferably has a handle for manually gripping and pulling off the locking ring. An opening width is preferably defined on the handle. This opening width is preferably at least 3 cm, in particular at least 5 cm. This correspondingly large opening width of the handle allows the fitter to grasp the handle with several fingers and pull it off. The handle is preferably designed such that its opening width extends perpendicular to the axial direction of the pipe arrangement.

In a preferred embodiment, the entire locking ring is made in one piece, in particular made of plastic. In particular, the optionally used handle is also an integral part of the remaining annular portion of the locking ring.

[0023] As an alternative or in addition to the handle, the locking ring can also have a tool opening. This tool opening is designed in particular to receive a tip of a hammer (carpenter's hammer / lathing hammer). By inserting the tool into the tool opening, the tool can be pulled and the locking ring can be removed.

The locking ring is designed in particular so that it can be pulled off non-destructively. This makes it possible, in particular, to place the locking ring back on the second tube if the locking ring is pulled off incorrectly.

In particular, the locking ring is designed as an open ring. The locking ring preferably extends over at least 200 ° of the second tube, in particular over at least 250 °.

It is preferably provided that the pipe arrangement between the two pipes

has full sealant, in particular an elastomer sealing ring. The first pipe particularly preferably has a bead, in particular in the area of the socket. The full sealant is arranged in this bead. This sealant seals in particular against the concrete milk which could otherwise penetrate between the two pipes when the pipe arrangement is poured.

Furthermore, it is preferably provided that the first tube and / or the second tube has / have a full-circumference sealing means, in particular in the form of an elastomer sealing ring, on the outer circumference. If water penetrates, this external seal seals the interface between the pipe arrangement and the concrete wall and thus prevents further penetration of moisture into the interior of the wall. In particular, it is provided that the external sealant is guided in a circumferential groove in order to prevent displacement in the axial direction during concreting.

Furthermore, it is preferably provided that at least one of the two tubes comprises a plate spring section. This disc spring section is used for axial tolerance compensation. In particular, tolerances in the formwork spacing can thereby be absorbed and the sealing edges on the flanges are always pressed against the formwork walls.

The disk spring section connects two tube sections. The two pipe sections differ in particular in their diameters. The plate spring section is, in particular, made thinner-walled than the two tube sections; Additionally or alternatively, the plate spring section can be made of a less rigid material than the tube sections. In particular, the pipe sections and the plate spring section are made in one piece. The plate spring section extends in particular at an angle of up to plus / minus 45 ° to the vertical in the axial direction.

The second tube preferably has an inner cone or an inner stop to prevent an insertable element from being pushed out. This insertable element is, in particular, a pinch seal. The cone tapers in particular from the spigot end to the flange end of the second tube and thus acts as a safety device for the insertable element, for example from the outside of the building inwards. In the event of water coming from the outside of the building wall, the insertable element is pushed against the cone and prevented from pushing through due to the narrowing of the cross-section. The inside stop can also fulfill a corresponding function. This inner stop is designed in particular as a stepped change in diameter. The inner cone or inner shoulder preferably forms the area of the second tube with the smallest diameter. The inner cone or inner shoulder tapers the second tube preferably by a maximum of 10%, more preferably a maximum of 5%, particularly preferably a maximum of 3%. The taper relates to a first inner diameter immediately next to the inner cone or inner shoulder and a second inner diameter at the narrowest point of the inner cone or inner shoulder.

Preferably, the first tube and / or the second tube each comprises a flange. The flange and the remaining part of the corresponding pipe are preferably made in one piece, in particular made of plastic by injection molding.

In the following, the formation of a flange is described in particular. Preferably, however, flanges are provided on both tubes. Both flanges can preferably have one or more of the preferred configurations.

[0033] The flange preferably comprises at least one bayonet catch element on the inside diameter. This bayonet catch element is used in particular to fasten a cover, in particular a blind cover.

On its outer circumference, the flange preferably has holes, in particular nail holes, for fastening to a formwork. This allows the pipe arrangement to be fixed to the formwork when concreting.

Furthermore, the flange preferably comprises one or more axially protruding

Sealing edges. The sealing edges are in particular one-piece components of the flange which protrude in the axial direction and rest against the formwork when concreting. As already described, the plate section is preferably provided, which ensures that the sealing edges lie tightly against the formwork.

At least one sealing edge is particularly preferably provided radially outside the holes (nail holes).

The invention further comprises a sealing arrangement comprising a tube for receiving a pinch seal, wherein the tube comprises an inner cone or inner stop as a push-out protection of the pinch seal, and wherein the inner cone or inner stop is designed so that an elastic sealing element of the pinch seal to the inner cone or Inner stop can be pressed. The sealing arrangement preferably also comprises the pinch seal.

The pinch seal is described, for example, in DE 10 2015 219 599 A1 as a “pinch flange”. The pinch seal is used to feed cables and hoses through the pipe. The pinch seal preferably comprises a tensioning element on both axial sides of the elastic sealing element. The two clamping elements are braced against each other, whereby the sealing element is squeezed radially against the inner cone or inner shoulder.

The pipe of the sealing arrangement is preferably part of a casing arrangement (in particular the second pipe of the casing arrangement described above) or preferably forms a casing. The cone tapers in particular from a spigot end to a flange end of the pipe and thus acts as a safety device for the insertable element, for example from the outside of the building inward.

The inner cone or inner shoulder preferably forms the region of the tube with the smallest diameter. The inner cone or inner shoulder tapers the tube preferably by a maximum of 10%, more preferably a maximum of 5%, particularly preferably a maximum of 3%. The taper relates to a first inner diameter immediately next to the inner cone or inner shoulder and a second inner diameter at the narrowest point of the inner cone or inner shoulder.

Further details, advantages and features of the present invention emerge from the following description of an exemplary embodiment with reference to the drawing. It shows:

Figure 1 shows a pipe arrangement according to the invention according to an embodiment,

FIG. 2 shows a first tube of the tube arrangement according to the invention according to the exemplary embodiment,

[0044] FIG. 3 shows a second pipe of the pipe arrangement according to the invention according to the exemplary embodiment,

FIG. 4 details of the second tube, and

Figure 5 shows a detail of the first tube.

In the following, a pipe arrangement 1, designed as a casing pipe arrangement, is described in detail with reference to FIGS. 1 to 5. Reference is always made to all figures.

The pipe arrangement 1 comprises a first pipe 10 and a second pipe 30. The two pipes 10, 30 can be pushed into one another. Figure 1 shows the position of the two tubes 10, 30 in a coaxial, but not yet pushed together position.

The first pipe 10 comprises a socket 11 at one end and a flange 16 at the opposite end. A bead 12 is formed on the socket side. A circumferential sealant (not shown) is arranged in the bead 12. This sealing means in the bead 12 seals against the insertable second tube 30.

Furthermore, the first tube 10 comprises a circumferential sealing means 13 on its outer circumference, which is guided in a corresponding groove. The external sealing means 13 seals

opposite the concrete wall or the concrete floor.

In addition, the first tube 10 comprises a plate spring section 14 for axial tolerance compensation. This plate spring section 14 is shown in detail in FIG. According to the schematic illustration in FIG. 5, the first pipe 10 has two pipe sections 15. The two pipe sections 15 are connected to one another via the plate spring section 14. The wall thickness of the disk spring section 14 is less than the wall thickness of the two tube sections 15. The disk spring section 14 extends essentially perpendicular to the axial direction, that is to say in the radial direction.

In particular, the illustration in Figure 2 shows the design of the flange 16 of the first tube 10. The flange 16 has a plurality of axially extending holes 17 on its circumference. These holes 17 are designed in particular as nail holes and are used to fix the flange 16 to a formwork.

In addition, the flange 16 comprises two circumferential sealing edges 18. The holes 17 are located between the two sealing edges 18. The sealing edges 18 serve to seal against a formwork.

Furthermore, FIG. 2 shows the arrangement of bayonet locking elements 19 in the interior of the flange 16. These bayonet locking elements 19 are used, for example, to fix a blind cover.

In the exemplary embodiment shown, the second tube 30 comprises two grooves 31 for axially fixing one locking ring 32 each.

The respective locking ring 32 has an annular, radially inwardly extending extension 33. The extension 33, measured in the axial direction, is significantly narrower than the rest of the locking ring 32. The grooves 31 are also designed correspondingly narrow. The locking rings 32 sit with the narrow extensions 33 in the narrow grooves 31.

The locking rings 32 are designed as open rings and can thus be detached and removed without destruction.

For removal without tools, the locking rings 32 comprise a handle 34. The handle has a relatively large handle width 35, so that the handle 34 can be gripped with several fingers.

When the two locking rings 32 shown are on the second tube 30, the two tubes 10, 30 can be pushed into one another until the first tube 10 strikes against the left locking ring 32. If the left locking ring 32 is removed, the two tubes 10, 30 can be pushed into one another up to the stop of the first tube 10 on the right locking ring 32.

In particular, FIG. 3 shows that the second tube 30 also has a flange 36. The flange 36 here, like the flange 16, comprises two circumferential sealing edges 18. In the interior of the flange 36 there are likewise bayonet locking elements 19, for example for a blind cover. The holes 17, in particular nail holes, are usually only formed on one of the two flanges 16, 36, but can also be provided on both flanges 16, 36.

FIG. 4 shows, purely schematically, in the upper illustration the configuration of an inner cone 37 in the second tube 30. The lower illustration in FIG. 4 shows that an inserted element, here a pinch seal 2, can be secured on this inner cone 37 against being pushed out. As an alternative to the inner cone 37, a corresponding shoulder in the second tube 30 can also be used to prevent the pinch seal 2 from being pushed out.

Furthermore, FIG. 4 also shows the separately described sealing arrangement 50 comprising the tube 30 for receiving the pinch seal 2, the tube 30 having the inner cone 37. The pinch seal 2 comprises a tensioning element 52 on both axial sides of an elastic sealing element 51. The two tensioning elements 52 are braced against one another, as a result of which the sealing element 51 is radially squeezed onto the inner cone 37.

The inner cone 37 forms the region of the tube 30 with the smallest diameter. The inner cone tapers the tube 30. The taper relates to a first inner diameter 53 immediately next to the inner cone 37 and a second inner diameter 54 at the narrowest point of the inner cone 37.

In addition to the above written description of the invention, reference is hereby made explicitly to the graphic representation of the invention in all figures for the purpose of supplementing its disclosure.

Austrian

REFERENCE LIST

10 11 12 13 14 15 16 17 18 19 30 31 32 33 34 35 36 37 50 51 52 53 54

Element that can be used for a pipe arrangement, in particular a pinch seal of the first pipe

sleeve

Bead

Sealant diaphragm spring section pipe sections

flange

Holes

Sealing edges bayonet lock elements second tube

Grooves

Locking rings

Appendix

Handle

Handle width

further flange inner cone sealing arrangement sealing element clamping elements

first inner diameter, second inner diameter

AT 521 671 B1 2020-09-15

Claims (9)

Claims 1. Pipe arrangement (1), in particular designed as a casing pipe arrangement, comprising a first pipe (10) with a socket (11) and a second pipe (30) which can be inserted into the socket (11) of the first pipe (10), characterized in that at least a locking ring (32) is provided as a stop for the first tube (10), the at least one locking ring (32) being placed on the second tube (30) and being removable to shorten the length of the tube arrangement (1) so that the second tube (30) can be further inserted into the first tube (10). 2. Pipe arrangement according to claim 1, characterized in that the locking ring (32) is arranged for axial fixation in a groove (31) in the second ring (30) or on a shoulder of the second ring (30), or on a further locking ring ( 32) is present. 3. Pipe arrangement according to claim 1 or 2, characterized in that the locking ring (32) comprises a handle (34) for manually gripping and pulling off the locking ring (32). 4. Pipe arrangement according to one of claims 1 to 3, characterized in that the locking ring (32) is designed as an open ring. 5. Pipe arrangement according to one of claims 1 to 4, characterized in that the second pipe (30) on the outside diameter or the first pipe (10) on the inside diameter has an end stop for the respective other pipe, the end stop having the shortest length of the pipe arrangement ( 1) determined when all locking rings (32) are removed. 6. Pipe arrangement according to one of claims 1 to 5, characterized in that a full circumferential sealant is provided between the two pipes, preferably in a bead (12) in the first pipe (10). 7. Pipe arrangement according to one of claims 1 to 6, characterized in that at least one of the two pipes (10, 30) comprises a disc spring section (14) for axial tolerance compensation, the disc spring section (14) connecting two pipe sections (15). 8. Pipe arrangement according to one of claims 1 to 7, characterized in that the second pipe (30) comprises an inner cone (37) or an inner stop as a push-out protection of an insertable element, preferably a pinch seal (2). 9. Pipe arrangement according to claim 8, characterized in that the inner cone (37) or the inner stop is designed so that an elastic sealing element (51) of the pinch seal (2) can be pressed against the inner cone (37) or inner stop. In addition 3 sheets of drawings