DE8229159U1 - CENTERING SOCKET FOR AN ELASTIC ROLL RING FOR SEALING SLEEVE PIPE CONNECTIONS - Google Patents

Description

Applicants i Hermann Mücher * GmbH «.j & Co _4. , KG., Steinwegstr. 30-32. _&

D-5830 Schifre ^ mi / W. ": 1 4» '. "Own symbol! ZRM 3/82

Centering socket for an elastic rolling ring for sealing | of socket pipe connections

The invention relates to vain centering for an elastic Rolling ring with an approximately round basic or effective cross-section for sealing socket pipe connections, which is shown in its pre-assembly position predominantly in the radially outer portion of its cross-sectional circumference independent of the encompassed by the sleeve manufactured and with this not firmly connected centering and from this during the pipe assembly is rolled axially into the socket of a pipe, which consists in particular of mineral materials, wherein the rolling ring at the latest at the start of assembly with more than half of the axial »extension of its pre-assembly cross-section axially in front of and with its outer jacket directly on or just in front of the socket end wall and / or the inner edge of the Sleeve lies, and that one or more parts of the centering mount overlap on the sleeve and / or spigot end outer wall.

Socket pipe connections of various types of pipes, in particular for gravity pipes discharging wastewater (e.g. from stoneware pipes DIN 1230, part 1, edition 9/795 made from concrete pipe en DIN 4032 and DIN 4035) are also partly used today After all, despite the penetration of the plug-in sleeves, which are mostly prefabricated in the pipe manufacturer, in more or less large sizes Scope mainly for cost reasons with rolling rings with circular basic or effective cross-section according to DIN 4O6O, part i, sealed. In addition to the correct pre-assembly of the Rolling ring on at least one of the two socket pipes results in the problem of reaching them when installing the two pipes the most accurate possible centric position of the two socket pipes to each other, so that the rolling ring after assembly all around its correct final assembly position in the socket pipe connection. Are the two pipes a little too much eccentrically mounted, there is a risk that the rolling ring will not roll into the socket pipe connection at individual points, and that this is therefore not properly sealed

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will. The centric alignment of 4 two socket pipes depends largely on the care and craftsmanship of the pipe layer from _s that are guaranteed Considering the narrow tube grave conditions do not imitier sufficiently. For this reason, preference is given in many cases to self-centering push-in sleeves, which are considerably more expensive than rolling rings. In addition, with certain socket pipe connections, such as those of stoneware pipes according to DIN 1230, Part 1, Edition 9/79, DN 100 - 200, deformations of the rolling ring of a little more than 30% due to the permissible spigot end and socket tolerances original ring thickness can occur. In order to be able to assemble a rolling ring according to DIN 4o6O, part 1 at all in such cases, it is necessary that the center of gravity of the preassembled rolling ring is within the limits of the smallest permissible socket gap (see DIN 123O ₁ part 1, edition 9/791 p . 12 "Explanations"). It is known that such a position of a rolling ring with a round cross-section cannot be achieved with the previous pre-assembly of the rolling ring on the outer wall of the cylindrical spigot end.

There are a number of rolling ring cross-sections known in which the rolling ring by means of axially wide adhesive lips or The like. Preassembled at the spigot end or at the Muffenixmeiikante is, whereby the center of gravity of the rolling ring with appropriate dimensioning of the rolling ring circumferential length compared to the previous Rolling rings preassembled directly on the outer wall of the spigot end are lowered radially by several millimeters to the pipe axis and thus comes to lie in the area of the smallest permissible socket gap. With these in cross section mostly strongly asymmetrically designed rolling rings there is very easy the risk of wrong and mostly too loose pre-assembly, which then usually leads to a defective socket pipe seal. But also the problem the sufficiently accurate central assembly of the socket pipes to be connected is essential with this type of rolling rings nowhere near satisfactory.

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(E.g. rolling rings with the official test mark PA-I 2050, PA-I 2164, PA-I 2952 and PA-I 2954 of the Institute for Building Technology, Reichpietschufer 72 - 76, 1000 Berlin 30).

Attempts have therefore been made for many years to try the Pröblöfci the simple and safe assembly of pipes and their socket connections should be sealed by means of inexpensive rolling rings, by using - if possible simultaneously the spigot end that enters the socket - rolling ring mountings that are already in the manufacturing plant of Pipes were additionally fastened in or on the socket. However, such rolling ring mountings are hardly cheaper, even more expensive than those used today for the same types of pipe, e.g. stoneware pipes Push-in sleeves. These rolling ring mountings are therefore now part of the pipe works of these, which still have some additional advantages prefabricated socket seals technically and economically long outdated (e.g .: BR-PS 537 l84 and 551 327, BE-PS 553 324, DE-OS 19 19 549).

About a centric insertion of spigot ends on which a rolling ring has been pre-assembled, and about its gradually increasing strength Deformation of up to 50 percent and more for smooth cylindrical ones To facilitate sleeves or to enable them in the first place, it is also known to have a guide sleeve centrally to put on the socket, which can be reached by means of a ra ^ dial inwardly extending collar is supported on the face of the sleeve, from where it axially away from the sleeve in a elongated funnel-shaped extension merges into which the spigot end provided with the preassembled rolling ring is pushed will. To limit the insertion depth here the spigot has a radially outwardly protruding stop ring through which the rolling-in movement of the rolling ring and so that further retraction of the spigot end into the socket is stopped. Since with different types of pipe the outside diameter the pipe sleeves either not specified at all or, as e.g. with stoneware pipes DIN 1230, part 1, Edition 9/79, DN 100 - 200, only given with maximum values

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are - where AB already in vitrified clay pipes DN 20Ö of the ¹ outer diameter of the socket differ by up to 27 mm * £ "~ siiid such socket-overlapping guide sleeves due to the lack of centering ability on the socket in most types of pipes, which today are still predominantly or at least partially sealed with RoIritigett In addition, the axial depth of the sleeve in these types of pipe is so short that a rolling ring, which begins to roll at the funnel-shaped extension of the guide sleeve beginning several centimeters in front of the sleeve, either not at all or only partially in In this case, its rolling-in movement would be prematurely stopped by the premature impact of the spigot end against the socket face of the preceding pipe, and the approximately axial center position of the rolling ring in the socket, which is required for a secure sealing of the socket-pipe connection, would by no means be reached (DE -OS 17 50 505).

The invention is based on the object of using the known elastic rolling rings with an approximately round base or to improve cross-section by means of a relatively simple and inexpensive centering so that the Correct pre-assembly of the rolling ring and the sufficiently centric assembly of socket pipes, possibly also axially relative short socket depths and relatively large radial diameter tolerances at their sockets and / or spigot ends, In the narrow pipe trench, even inexperienced pipelayers carried out practically flawlessly and thus functionally reliable can be, and that the rolling ring also with socket gap widths due to the permissible radial diameter tolerances Their sealing surfaces occasionally have rolling ring deformations of 50% and possibly several percentage points make overlying necessary, can still be installed properly and safely in a simple manner.

These tasks are achieved by means of the centering mount according to the invention solved by the characterizing features of claim 1.

To ensure a secure sealing of the socket pipe connection also with conical shape of the outer wall on the socket to reach overarching part or parts of the centering mount, a development of the invention provides the characterizing features of claim 2 for use.

If the »centering socket with several parts on the socket and / or overlaps the outer wall of the spigot end, the required adequate centering is achieved according to another training the invention is best achieved in that the characteristic Features of claim 3 in the construction of the

fs' centering take into account. If

The advantages that can be achieved with the invention are, in particular, that a rolling ring with a simpler cross-section and therefore easy to produce even when using cellular rubber is made by means of a centering mount, which is also inexpensive to manufacture and preferably made of harder plastic material, in which the rolling ring is expediently already in the Manufacturer of the centering mount or the rolling ring is used, can be preassembled in the simplest way in a sufficiently central position even under the most difficult construction site conditions. Finally, the parts of the centering mount that extend over the outer wall of the socket and / or spigot end ensure the required secure centric assembly even with socket pipes that may have relatively large radial socket and / or spigot end tolerances, which at the same time provides the necessary for a perfect sealing of the socket pipe connection , even all round rolling of the rolling ring in its ideal final assembly position in the axial middle area of the sleeve is reliably guaranteed. In addition, the centering mount invention% adjacent sealing surfaces rolling ring deformations of 50% and some PröZentpunkte suitable especially for socket pipe connections in which due to the allowable radial diameter tolerances her the socket gap loading can occur above and / or in which, compared to the required, relatively large ring- f

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thick, relatively short axial socket depths (such as Vitrified clay pipes DIN I23O, part 1, edition 9/791 DN 100 - 200) are provided.

It shows - each in a partial cross-section - the execution examples

1 and 2 show a centering mount and the rolling ring arranged therein in its preassembly position with conical or radially deformable centering parts of the centering mount that extend over the socket and spigot outer wall; and FIGS. 3 and k show a similar centering mount with rolling ring "as in the previous figures, but with radially deformable centering parts of the centering mount that only extend over the outer wall of the sleeve.

In Fig. 1, the rolling ring 1 is in its preassembly position in a centering mount 2, which consists of a harder and to- || there is at least some elastically deformable plastic material. One on the tip end outer wall 3 overlapping, from j | a radially movable tongue k part of the centering mount 2 is radially clamping, but axially slidable for the spigot end 5 during assembly, on the tip end outer wall 3 together with at least one, but better, however, two further such radially movable tongues k, which are at approximately the same distance spaced apart on the circumference of the centering mount 2, but not shown in Fig. 1 for reasons of space and Vereinfächungsgründen, this tongue ensures k at the spigot end 5 "which here includes the normenmäisig radially largest permissible outer diameter, for a sufficiently aentrische position of the centering mount 2 and so that the rolling ring 1 to the pipe axis of the spigot end (not shown here) Another part of the centering mount 2 that extends over the sleeve outer wall 6 has a conical course 7 that narrows conically to the pipe axis and in the direction of the rolling ring 1, which by means of a radially extending short Transition 8 all around the circumference of the Zeiitrlerfaäsung 2 is arranged. In Fig. 1, the sleeve outer wall 6 has a normally still permissible, but relatively large plus tolerance

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their radial diameter, so that the front outer edge 9 of the sleeve 10 in the radially outer region of the conical Course 7 of the outer wall 6 overlapping Part of the centering 2 comes to rest. At the latest at the start of assembly, the centering mount 2 is axially Pressure due to the conicity of the course 7, which narrows radially towards the pipe axis, of its on the socket outer wall 6 overarching part in a sufficiently central position brought to the socket 10, whereby also the one in the central position 2 arranged rolling ring 1 occupies the same position. Since both the spigot 5 of the pipe to be assembled as well as the sleeve 10 of the pipe already laid in a central position to the centering mount 2 and thus to the rolling ring 1 arranged in it, this inevitably also results in a coaxial position of the two Socket pipes to be assembled together. This creates all the conditions for the rolling ring 1 at the subsequent assembly out of the centering mount 2 and rolls centrally all around into the socket gap. At the At the end of the assembly, the rolling ring 1 comes to a standstill in the axial central area of the sleeve 10, where it performs its sealing function in the socket pipe connection also in the long term can best meet. Due to the axial shortness of the conical course 7 of the. Socket outer wall 6 overlapping part of the centering mount 2 is the Rolling ring 1 at the start of assembly still so close to the inner edge 11 of the sleeve 10 that the rolling ring 1 also in the radial largest permissible outer diameter of the sleeve 10 in an axially sufficiently deep final assembly position in the sleeve gap can still roll up.

FIG. 2 shows a rolling ring 1 and a centering mount 2 of the same shape as in FIG. 1. In contrast to FIG. 1 point here, however, that the spigot end 5 and the socket iü jis the radially smallest permissible outer diameter. The radially movable tongue 4 of the outer wall 3 overlapping part of the centering mount 2 has Due to their elastic deformability radially to the pipe axis

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lowered by several millimeters, where it comes into contact with the tip end outer wall 3, which has a smaller radial diameter due to the tolerance, but can be pushed through axially for the tip end 5 during assembly, in otherwise the same way as in FIG. 1. Here, too, the spigot end 5 is centered with respect to the centering mount 2 together with at least one, but better, however, two further radially movable tongues k in the manner already described under FIG. 1. The front radial outer edge 9 of the sleeve 10 is located in the radially inner area of the conical course 7 of the part of the centering mount 2 that extends over the outer wall of the socket 6, while the end wall 12 of the socket 10 rests directly on the radial transition 8 of the centering mount 2, which is due to the for centering the axial pressure exerted on the centering mount 2, already press the inner edge 11 of the sleeve 10 a little into the rolling ring 1 and thereby begin to deform it. As a result of their conical shape or their radially deformable sections, the centering interaction of the parts of the centering mount 2 overlapping the socket outer wall 6 and the spigot outer wall 3, even with the radially smallest permissible outer diameters of the spigot end 5 and the socket 10, exactly as with their radially largest permissible diameters and all diameter tolerances in between, the coaxial alignment of the socket pipes to be assembled and the central position of the rolling ring 1 achieved at the latest at the beginning of the assembly of the two socket pipes in the simplest way. In this way, "a secure sealing of the socket-pipe connection with all permissible radial diameter tolerances, including the use of a rolling ring 1, which only needs to have the known round and therefore extremely inexpensive cross-section, is guaranteed even under the most difficult construction site conditions difficult assembly conditions for loose sealing elements for sealing vitrified clay pipes according to DIN 123O ₁ part 1, edition 9/79, DN iÖÖ - 200, fulfilled.

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In Fig. 3, the centrifugal socket 2, in which the rolling ring 1 is arranged, has an initially radial and then approximately axially extending part extending over the muff enaüßenwäild 6 with a relatively small, starting from the circumference of the centering socket 2, part-circle-limited width of, for example 3 - 5 cm. This part of the centering mount 2 has aii each of its two longitudinal axial sides a radially elastically deformable extension 13, which is directed so far obliquely-radially to the pipe axis on the circumference of the socket outer wall 6 that it is still on the even with the smallest permissible outer diameters of the socket 10 Sleeve outer wall 6 comes radially clamping to the plant. The front edge 1k of the radially deformable extension 13, which is directed towards the sleeve 10, is connected

runs in a kind of tapering axially at an angle to the radially white | test axial central portion of the projection 13, thereby eiitie% radial funnel effect when placing the thermo-resistor to the outer wall 6 cross-section j on the centering mount 2! the socket 10 results. The sleeve 10 has in Fig. 3 its largest permissible outer diameter, whereby the radially elastically deformable extension 13 radially outwards into a relatively flat, dependent on the course of the sleeve outer wall 6; Position is pressed and thereby rests radially clamping against the sleeve outer wall 6 during pipe assembly. Together with at least one, but if possible at least two further parts of the centering mount 2 which are shaped in this way and overlap the sleeve outer wall 6 and which are arranged at approximately the same distance i in front of one another on the circumference of the centering mount 2 and are no longer shown in FIG. 3 for reasons of simplicity [are, the approaches 13 ensure a sufficiently central ^l position of the centering mount 2 and thus a central pre-assembly position of the rolling ring 1 to the pipe axis, not shown here, of the already laid socket pipe, in the socket 10 of which the spigot 5 of the next Rotire can then be easily mounted .

Fig. 4 shows the same trim 2 with inserted Rolling ring 1 as in FIG. 3 with the difference that here the sleeve 10 the radially smallest permissible outer diameter

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has * The radially elastic vertTormbable AiiSatz 13 des the muffen outer wall 6 overlapping part of the centering mount 2 runs radially relatively steeply to the pipe axis, so that the approach 13 to dör even in this situation Muffon outer wall 6 still clamping radially and together with the ■ Further approaches 13, not shown here, the centering mount 2 and thus the rolling ring 1 arranged in it sufficiently centric to the pipe axis of the pipe that has already been laid able to align. The center of gravity 15 of the rolling ring 1 is within the smallest permissible, between Spitzendenäußenwäiid 3 and inner wall of the sleeve 10 in the Assembly of the resulting socket gap l6, so that socket pipe connections, where pipe tolerance-related deformations of the rolling ring 1 of 50 and a few percentage points above (as for example with vitrified clay pipes DN 100 - 200 according to DIN 1230, part 1, edition 9/79), with the opposite Plug-in muffon considerably cheaper roll rings 1 even under the most difficult construction site conditions and can be safely sealed.

Claims (1)

Applicant: Hermann Mücher GmbH. & Co. KG., Steinwegstr. 30 - 32, D-583O Schw ^ lm / W .: , "-. if · «· Centering socket for an elastic rolling ring for sealing of socket pipe connections sii ^ eifi ^ llenAH sayings: 1. Centering mount for an elastic rolling ring with approaching round basic or effective cross-section for sealing socket pipe connections, which is in its pre-assembly position predominantly in the radially outer part of its cross-sectional circumference of the centering barrel, which is manufactured independently of the socket and not firmly connected to it includes and from this during pipe assembly axially into the socket of a pipe, which in particular is made of mineral materials exists, is rolled up, the rolling ring at the latest at the start of assembly with more than half of the axial Extension of its pre-assembly cross-section axially before raid with its outer jacket lies directly on or just before the socket end wall and / or the inner edge of the socket, and that a or several parts of the centering mount overlap the socket and / or spigot end outer wall, characterized in that that the part or parts that extend over the socket! 2O and / or spigot end outer wall (6 or 3) or overarching parts of the centering mount (2) an at least approximately conical shape, such as a conical course (7) that narrows radially towards the pipe axis, and / or by means of radially deformable sections, e.g. radially movable tongues (k) , deformable lugs (13) or the like, has or have a design with which this part or these parts are able to meet the standard \ moderately permissible or, with certain types of pipe, customary manufacturing tolerances of the radial outer diameter of the sleeves (10) and / or spigot ends (5) of these pipes to such an extent that the Kollring (1) arranged in the centering mount (2) prior to assembly is in a For a secure sealing of the socket pipe connection, it is sufficiently central to the pipe axis of at least the pipe, \ 35 centering and / or radially centric clamping of the part (s) of the centering mount (2) at least until the start of assembly by mere contact or axial pressure on its socket and / or spigot end outer wall (6 or. I * I ( i I i «· III * III« ti te · a ·] However, the end (5) can be pushed over axially during assembly. L ·. Centering mount for an elastic rolling ring according to claim 1, characterized in that a conically narrowing course <7) of the part or parts of the centering mount (2) extending over the sleeve outer wall (6) is dimensioned or axially short . are that the rolling ring (l) % at the start of assembly still so close in front of the socket outer wall (12) 10 and / or inner edge (ll) of the sleeve (10) is that -der RoIlring (l) During assembly, it is still axially deep enough for a secure sealing of the socket pipe connection Final assembly position in the socket (10) can be rolled up. 3. centering mount for an elastic rolling ring according to claims 1 and 2, characterized in that that the parts of the centering mount (2) that overlap the socket and / or spigot outer wall (6 or 3) are arranged at approximately the same distance from one another on the circumference of the centering mount (2). '''· · IIIII' « * t t« ι ι • III II ι ι