EP2238313B1 - Anchor tube and method for production thereof - Google Patents

Abstract

The invention relates to a method for production of anchor tubes (1), for injection anchors with a static mixer (6), positionally fixed in the longitudinal direction, wherein starting from a preferably hot-rolled tube (2), at least one static mixer (6) is inserted in the tube drilling (3) and then a profile (13) is rolled into the outer surface (4) of the tube (2) eine Profilierung (13), with at least local cross-sectional reduction of the tube drilling and the static mixer (6) is located in the longitudinal direction as a result of the cross-sectional reduction. According to the invention, an advantageous improvement can be made wherein a sleeve element (5) is introduced into the tube drilling (3) before rolling in the profile (13) which encloses the static mixer (3) in the tuber drilling (3) at least in a longitudinal section of the static mixer (6) and which has a lower hardness than the static mixer (6). The invention further relates to an anchor tube for injection anchors which may be produced by said method.

Description

The present invention initially relates to a method for the production of anchor tubes for injection anchors, starting from a, preferably hot-rolled, existing as a starting material tube first introduced a static mixer in the tube bore and then in the outer surface of the tube profiling, preferably a length sections or continuously running thread, is rolled under at least local cross-sectional reduction of the pipe bore, and wherein the static mixer is fixed positionally in the longitudinal direction by the reduction in cross-section.

Such anchor tubes are used as a component of injection drill anchors, for example. Drilled for solidification in the wall of a mountain, in the wall of a cavity in the open pit, in a subsoil or the like and pressed in the hole formed by means of a hardening grout and thereby secured. The Injektionsbohranker usually has at its front end a drill bit and the anchor interior a longitudinally continuous and central injection channel through which the Verpressmasse can be supplied and having at its front end to the anchor outer side opening outlets. Such an injection anchor may have one or, if necessary, a plurality of anchor tubes connected by means of couplings, which carry an anchor thread on their outer jacket, lengthwise or continuously. This improves on the one hand the composite effect with the grout and can also serve to connect anchor rods with the drill bit and each other by means of couplings and for attachment to a rear injection head. The injection head has a flushing head, through which, for example, when drilling a rinsing agent (eg., Air or water) and for pressing a or more feed components are introduced under pressure into the injection channel. The preferred compositions also include two-component resins, the two components harden after contact with each other after a short time. Such supply components are therefore supplied separately to the injection head, so that they only meet one another after entry into the injection channel or shortly before in a lost part mounted at the end thereof. In order to achieve a good mixing of the components until it leaves the well, it is known to arrange one or more so-called static mixers in the injection channel in a fixed position. This is a flow obstacle formed from so-called baffles, which due to its design, for example with ribs, spirals, etc., causes their mixing as the two components flow through. In order to prevent the static mixer from becoming entangled by the flow pressure of the feed components, various techniques are used. As the closest prior art, the rolling of static mixers is in the center in the anchor tubes of Injektionsbohrankern as a supply channel continuous bore from DE 102007005540 A1 known. As a rule, anchor tubes made of steel and preferably static mixers made of plastic are used in practice. For the preparation of the anchor tubes is often used as a starting material tube, which still has a relatively low inner and outer surface quality in the raw starting state and can have dimensional and dimensional tolerances. In particular, the pipe serving as a starting material sometimes even has a non-circular, for example polygonal or even polygonal, bore and / or outer cross section. The desired static mixer must have a diameter so that it can be pushed in axially before the rolling of the profiling in the tube bore. Due to the dimensional and form tolerances mentioned, however, the desired low and uniform tolerancing in the bore cross section is not always achieved, so that the static mixers do not roll into their bores in the known manner in the case of all injection anchors and there is a risk of damaging the static mixers.

Against this background, the invention has the object, advantageously further develop a method of the type mentioned, so that in particular the aforementioned disadvantages are avoided as much as possible.

The object is achieved according to the invention first and essentially in conjunction with the features that in the tube bore before rolling of the outer profiling an envelope element is introduced, which surrounds the static mixer in the tube bore at least in a longitudinal section and the one compared to the static mixer having lower hardness. The axial fixation of the static mixer results from the fact that the enveloping element is clamped by the cross-sectional reduction occurring during rolling of the profiling in the tube bore and fixed in the longitudinal direction on the bore wall and, in turn, also undergoes a certain reduction in cross-section with respect to the enveloping element inner cross-section through which the static mixer clamped and fixed in the longitudinal direction of the Hüllelement inner wall. After rolling the profiling consequently, the enveloping element and the static mixer are both held immovably in the tube bore, so that is quasi speak of a two-stage in the radial direction of press-fitting. According to the invention, the enveloping element has a lower hardness and / or a lower strength than the static mixer. The tubes used for the production of anchor tubes are usually made of steel or a comparable material with therefore comparatively high hardness and strength. In this respect, it is or is preferred that the material of the enveloping element also has a lower hardness and / or a lower strength in comparison to the outer anchor tube. It is preferred that the material of the Hüllelementes compared to the materials of static mixer and anchor tube the lowest hardness and / or the lowest strength having. If an anchor tube made of steel and a static mixer made of plastic are preferably used, the anchor tube can have the highest hardness and / or strength of all components. By the sheath element has at least on its surface a lower compared to the static mixer and thus also to the armature tube hardness, this compensates for the tolerances described above, without causing damage to the static mixer. Tolerances of the tube, which the static mixer can not compensate, can be compensated by the envelope element due to its easier compared to the static mixer deformability. The invention thus makes it possible that static mixers can also be rolled into starting material or in anchor tubes with comparatively larger tolerances, so that on the one hand the quality of the finished anchor tubes improved and on the other hand costs can be saved.

Preferably, a length section of a pipe or a hose can be used as the envelope element, wherein this section preferably has the same length as the static mixer, but could also deviate therefrom. In this respect, the enveloping element is a separate part from the static mixer. It is also preferred that this tube piece or the piece of tubing has such good deformability, so that it is still slightly deformable by hand with respect to its cross-section within certain limits. In this way, the insertion is facilitated even in a non-circular tube bore even with little play and the compensation of larger tolerances. For this purpose, the sheath element can preferably have a comparatively low modulus of elasticity. Well suited in this respect is also an elastically deformable plastic or rubber hose. With regard to the method according to the invention, it is also preferred that the static mixer is first introduced into the enveloping element and then both parts are introduced together into the bore of the primary material or into the tubular bore. It is considered appropriate that the outer cross section of the enveloping element, in particular whose outer diameter is about the same size or slightly smaller than the pipe bore cross-section, in particular as the pipe bore diameter, before the rolling of the profiling. In connection therewith, it is preferred that a static mixer is used whose cross section, in particular its outer diameter, is approximately the same size or slightly smaller than the hollow cross section, in particular the inner diameter, of the enveloping element. Also in this case, when using a Hüllelementes with sufficiently easy deformability, the possibility that this is inserted with the static mixer inserted therein in a tube bore, for example. In cross-section non-circular (eg. Polygonal or polygonal) before rolling in the profiling and the possibly also uneven in the longitudinal direction. In this respect, for the production of the anchor tubes also serve as a starting material tubes, the whole, including on the outer lateral surface non-round (eg. Polygonal or polygonal) are bounded. Preferably, a static mixer may be used which has in its longitudinal direction adjacent, circumferentially twisted to each other Spiralwindungsabschnitte whose preferably rib-like outer edge is located on an imaginary cylindrical envelope surface. In particular, if the static mixer has angular or even sharp edges on its outer edges, these can cut slightly into the softer enveloping element during rolling over or profile rolling in, whereby an additional compensation of tolerances and improved axial fixation is made possible. An expedient development of the method provides that the static mixer and the enveloping element are introduced into the tube bore leaving a free end portion of the tube bore. A subsequent method step may be that the end section of the tube bore, preferably after the rolling of the profiling, is widened in its diameter, preferably drilled thereto, and then finished on the surface. This processing can be carried out in particular in a separate end processing station, wherein the chips formed during the processing of the end portion of the other side, ie by the already fixed Static mixer through, can be blown out. Furthermore, there is the possibility that in the widened end section at least one front longitudinal section of an injection nozzle, which has an internal cavity, separate inlet openings for the anchor rod to be supplied with different supply components and arranged on the front longitudinal section outlet opening, is pressed axially frictionally. If necessary, a protective cap can be placed on the rear end of the injection nozzle protruding from the pipe bore. Such a combination of an anchor rod with end axially non-positively injected injection nozzle is in the context of the invention also independently, ie without the other features mentioned, important. The unit formed from the anchor rod and the injection nozzle can be pre-assembled in larger quantities and then fed to an injection head for drilling and grouting Bohrinjektionsankern particular magazines for automated operation. Depending on the desired configuration of the injection nozzle, it can be inserted into a rotatable inner part of the flushing head, for example, in a recess geometrically adapted to its rear longitudinal section.

The invention further relates to an anchor pipe for injection anchors, in the outer lateral surface of a profiling, preferably a lengthwise or continuously extending thread, is rolled and in the tube bore a static mixer in the longitudinal direction positionally determined by the rolling of the profiling, at least local reduction in cross-sectional area of the pipe bore is.

Based on the above-mentioned prior art, the invention has the object, advantageously further develop such an anchor tube, so that in particular the disadvantages described are avoided as much as possible.

The stated object is achieved according to the invention first and essentially in conjunction with the features that the static mixer is surrounded at least in a longitudinal section within the tube bore of a Hüllelement having a lower compared to the static mixer hardness, and that the Hüllelement and the static mixer in the longitudinal direction positionally determined by the rolling of the profiling resulting at least local reduction in cross-section. It is preferably provided that the material of the Hüllelementes has a lower hardness and / or lower strength than the material of the static mixer, but in so far also sufficient if a corresponding gradation. Regarding. The coming into contact surfaces is given. With regard to the effects and advantages achievable by the invention as well as to possible developments thereof, reference is made to the preceding and the following description. In particular, it is preferred that a tube piece or a piece of tubing is provided as the envelope element. There is preferably the possibility that a static mixer made of plastic and a sheath element made of plastic or rubber are combined. Particularly suitable is an elastic plastic tube whose cross-section is deformable by hand. It is also considered appropriate if the enveloping element and the static mixer have the same lengths. With regard to the static mixer, it is preferred that this has longitudinally adjacent, circumferentially twisted spiral winding sections whose preferably rib-like outer edge lies against an imaginary cylindrical envelope surface. The static mixer and the enveloping element can be arranged in the tube bore leaving one end portion. In these at least one front longitudinal section of an injection nozzle, which has an inner cavity, separate inlet openings for the anchor rod to be supplied to different supply components and arranged at the front longitudinal section outlet opening, be pressed axially frictionally. Said injection nozzle can preferably made of plastic, more preferably be made of polyamide, in particular in one piece as a plastic injection molded part.

Fig. 1

im Längsschnitt ein Rohr, das exemplarisch zur Herstellung eines erfindungsgemäßen Ankerrohres gemäß einer bevorzugten Ausführungsform geeignet ist, durch Aufbrüche verkürzt dargestellt;

Fig. 1a

eine Schnittansicht entlang Schnittlinie Ia - Ia in Fig. 1;

Fig. 2

in einem Längsschnitt exemplarisch ein Hüllelement, das zur Herstellung eines erfindungsgemäßren Ankerrohres gemäß einer ersten bevorzugten Ausführungsform geeignet ist, durch einen Aufbruch verkürzt dargestellt;

Fig. 2a

eine Schnittansicht entlang Schnittlinie IIa - IIa in Fig. 2;

Fig. 3

in einer Längsansicht, durch einen Aufbruch verkürzt dargestellt, exemplarisch einen Statikmischer, der zur Herstellung eines erfindungsgemäßen Ankerrohres gemäß einer bevorzugten Ausführungsform geeignet ist;

Fig. 3a

eine Schnittansicht entlang Schnittlinie IIIa - IIIa in Fig. 3;

Fig. 4

in einer durch Aufbrüche verkürzten Längsansicht ein erfindungsgemäßes Ankerrohr gemäß einer bevorzugten Ausführungsform nach dem Einwalzen des Hüllelementes und des Statikmischers;

Fig. 5

in einem Längsschnitt das in Fig. 4 gezeigte Ankerrohr, schematisch vereinfacht;

Fig. 6

das in Fig. 5 gezeigte Ankerrohr nach einer weiteren Bearbeitung und

Fig. 7

das in Fig. 6 gezeigte Ankerrohr mit einem darin eingesteckten Injektionsstutzen, gemäß einem bevorzugten Ausführungsbeispiel.

The invention will be further described below with reference to the accompanying figures, which show a preferred embodiment. It shows:

Fig. 1

in longitudinal section, a tube which is suitable for producing an anchor tube according to the invention according to a preferred embodiment, shown shortened by breaks;

Fig. 1a

a sectional view taken along section line Ia - Ia in Fig. 1 ;

Fig. 2

in a longitudinal section by way of example an envelope element, which is suitable for producing an inventive anchor tube according to a first preferred embodiment, shown shortened by a departure;

Fig. 2a

a sectional view taken along section line IIa - IIa in Fig. 2 ;

Fig. 3

in a longitudinal view, shortened by a departure, exemplified a static mixer, which is suitable for producing an anchor tube according to the invention according to a preferred embodiment;

Fig. 3a

a sectional view taken along section line IIIa - IIIa in Fig. 3 ;

Fig. 4

in an abbreviated by risers longitudinal view of an inventive anchor tube according to a preferred embodiment after the rolling of the Hüllelementes and the static mixer;

Fig. 5

in a longitudinal section the in Fig. 4 shown anchor tube, schematically simplified;

Fig. 6

this in Fig. 5 shown anchor tube after further processing and

Fig. 7

this in Fig. 6 shown anchor tube with an injection nozzle inserted therein, according to a preferred embodiment.

With reference to the FIGS. 1 to 7 is the inventive method for the production of anchor tubes 1 according to a preferred approach and with reference to the FIGS. 4 to 7 the anchor tube 1 according to the invention according to a likewise preferred embodiment and a possible development described. The Figures 1 and 1a show an example for its production as a semi-finished or pre-material serving hot-rolled tube 2, which, for example, a (shortened) total length of 2.5m (or deviating therefrom) and, for example, a diameter in the size range of 30-40mm (or deviating thereof). In the example chosen, it is a steel tube with a tube bore 3 running through it in the middle along the longitudinal direction L. In the section of FIG FIG. 1a is schematically shown that the tube bore 3 has a round, but deviating from an exact circular shape by schematically indicated tolerances cross-section, so the diameter is so far only approximately D ₁ . The outer surface 4 of the tube 2 is approximately cylindrical, that is subject to certain (not shown) tolerances.

The Figures 2, 2a show an enveloping element 5, which in the example chosen is a longitudinal section of a plastic tube. Preferably, this plastic may be polyethylene (PE) or polyamide (PA), for example with a yield stress of 15-45 N / mm ² . Its outer diameter D ₂ is about the same size or slightly smaller than that Diameter D ₁ . In the example chosen, the diameter D _{1 of} the non-circular tube bore is approximately 12-13 mm (also depending on the measured direction) and the diameter D _{2 is} 12.5 mm, with a wall thickness of the envelope element 5 of 1.25 mm.

FIG. 3 shows a so-called static mixer 6 according to a preferred embodiment. This is made of plastic, in the specific example of polyacetal (POM), whose yield stress is in the range of about 65-75 N / mm ² . In the example, therefore, the material of the static mixer 6 has a higher strength than the material of the plastic tube of the Hüllelements 5. The overall one-piece, shortened by the departure shown static mixer 6 has in the example a total length of 600mm and has 48 so-called baffles which lie one behind the other in the longitudinal direction L. Each baffle 7 is formed from two in the same length section at 180 ° to each other angularly twisted Spiralwindungsabschnitten 8, which in turn extend over each half a revolution. Baffles 7 adjacent to one another in the longitudinal direction L each have opposite helical pitches and are angularly offset from one another by a quarter turn about the longitudinal axis, so that the structure can be traversed in the longitudinal direction L. The rib-like outer edge 9 of the Spiralwindungsabschnitte 8 has angular edges, wherein the outer edges 9 at an imaginary cylindrical, in the FIGS. 3 and 3a indicated by dashed lines envelope 10 are. In the example chosen, the static mixer 6 has an outer diameter D _{4 which} , like the inner diameter D _{3 of} the enveloping element 5, is approximately 10 mm. It is understood, however, that deviations from all of the aforementioned dimensions, in particular diameters and their ratios, are also possible within the scope of the invention. The plastic selected for the enveloping element 5 has a lower hardness and easier deformability than the plastic chosen for the static mixer 6.

For the production of in the FIGS. 4 and 5 In a first preferred embodiment of the invention shown anchor tube 1, the static mixer 6 is first in the envelope 5, which in the example has the same length, inserted and then both nested parts 5, 6 together through an end opening 11 in the longitudinal direction L in the tube bore. 3 inserted and inserted therein from the end face of the tube 2 by a distance A, leaving an end portion 12. Despite the dimensional and dimensional tolerances of the tube bore 3 and the small, determined by the selected diameters D ₁ to D ₄ lateral game, the sheath element 5 and the static mixer 6 can be due to the low hardness and strength of the Hüllelementes 5 and the selected size ratios described above easily up to this, even in FIG. 5 shown, insert the longitudinal position. In a next process step, a profiling 13, here in the form of a trapezoidal anchor thread 14, rolled in the outer circumferential surface 4 of the tube 2, wherein a person skilled in the thread rolling per se suitable technique is known. FIG. 4 shows the webs 15 and grooves 16 of the anchor thread 13, which in the FIGS. 5 to 7 is shown diagrammatically simplified only. The rolling or rolling of the anchor thread 14 is under a compressive stress, which leads to a certain compression and thereby reducing the transverse to the longitudinal direction L oriented pipe cross-section. Specifically, it also comes through the deformations occurring at least a local cross-sectional reduction of the pipe bore. 3 FIG. 5 shows schematically simplified in sectional view that the inner surface 17 of the tube bore 3 now rests flat against the outer side of the enveloping element 5 due to the reduction in cross-section caused by the rolling, wherein the (in FIG. 5 not graphically illustrated) dimensional and dimensional tolerances of the bore 3 are compensated by the comparatively softer enveloping element 5 by corresponding local deformations. Depending on Einwalzbedingungen there is the possibility that it either only in the area of the thread grooves 16 or along the entire thread to a certain constriction or cross-sectional reduction of the tube bore 3 comes. In this case, the diameters D ₁ to D ₄ are matched to one another and to the rolling conditions and the enveloping element 5 such that the constriction of the tube bore 3 also leads to a certain compression of the enveloping element 5 and to a reduction in its hollow cross-section, ie to a reduction in its inside diameter D ₃ leads. As a result, the inner surface 18 of the Hüllelementes 5 is pressed radially inwardly against the rib-like outer edge 9 of the Spiralwindungsabschnitte 8 of the static mixer 6. In this case, the comparatively lower hardness of the Hüllelements 5 also in the walls of certain deformations, by which tolerances are compensated. It is clear that the enveloping element 5 is now fixed in the longitudinal direction L in the bore 3 by the clamping force generated from the outside and that the static mixer 6 is fixed in the longitudinal direction in the enveloping element 5 by the clamping force generated from the outside during rolling in, thus ultimately also when it comes to the tube 2 itself. If it comes to a cross-sectional constriction during rolling of the profiling 13, which is greater than the compression required for the axial fixing of casing element 5 and static mixer 6, leaves the sheath element 5 due to its lower compared to the static mixer 6 Hardness to that the Spiralwindungsabschnitte 8 press with their sharp outer edge 9 in the inner surface of the Hüllelements 5 or possibly even cut. In this way, otherwise possible damage or possibly even bursting of the static mixer 6 is prevented.

FIG. 6 shows the anchor tube 1 according to another, according to a preferred embodiment of the method possible method step. In this case, the end portion 12 of the pipe bore 3 has been slightly enlarged over the original diameter D ₁ , drilled in the selected example and then finished. At the same time a processing of the end face 19 has been made to make them flat as shown.

FIG. 7 shows as a preferred further possibility that in the enlarged end portion 12, a front longitudinal portion 20 of an injection nozzle 21 was pressed axially frictionally. The injection nozzle 21 has an internal cavity 22 with prepared separate inlet openings 23, 24 for various supply components to be supplied to the anchor rod 1 during the compression operation and an outlet opening 25 provided on the front longitudinal portion 20, which opens into the tube bore 3 serving as the injection channel. In the post-processing, the diameter of the end portion 12 was so on the outer diameter of the longitudinal section 20 of the injection nozzle 21, or to the outer diameter of the provided therein, in FIG. 7 Not shown, axially spaced annular ridges adapted to pull out the injection nozzle 21 from the anchor tube 1, a large pulling force would be required. The rearward length portion 26 is provided to enter at an injection head for supplying the supply components (for example, the two components of a two-component resin) on a rotationally driven inner part in a geometrically adapted recess so that the prepared inlet openings 23, 24 with Outlet ports of separate supply lines for the supply components are aligned. A torque transmitting connection of the anchor rod 1 is possible by screwing its armature thread 13 into a suitable threaded hole in the rotationally driven inner part of the flushing head. Another special feature of the injection nozzle 21 is that its inlet openings 23, 24 are closed before use for the first time by predetermined breaking points in the form of wall thickness reductions. These rupture only when pressurized by a flushing agent or by the components of the grout used, wherein the adjacent, wedge-shaped in cross section wall portions act as elastically resiliently springing valve flaps. In the front, by an annular shoulder 27 axially limited portion of cavity 22, a separate further static mixer 28 is used. This requires no further fixation, so in particular no clamp connection with the injection nozzle 21. Instead, its axial movement is limited rearwardly by the annular shoulder 27 and forward by the separate static mixer 6 which is positionally fixed in relation to the anchor tube 1 as previously described.

All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.

Claims (15)

1. Method for the production of anchor tubes for injection anchors with a static mixer positionally fixed in the longitudinal direction, starting from a tube, in particular a hot-rolled tube, at least one static mixer being inserted into the tube bore thereof and then a profile, in particular a thread extending continuously or in longitudinal portions, being rolled into the external surface of the tube with at least local cross-sectional reduction of the tube bore, and the static mixer being positionally fixed in the longitudinal direction as a result of the cross-sectional reduction, characterised in that a sleeve element (5) is introduced into the tube bore (3) before the rolling in of the profile (13), which sleeve element encloses the static mixer (6) in the tube bore (3) at least in a longitudinal portion of the static mixer (6) and has a hardness less than that of the static mixer (6).
2. Method according to claim 1, characterised in that a length of tube or a length of hose is used as a sleeve element (5).
3. Method according to one or more of the preceding claims, characterised in that the static mixer (6) is first introduced into the sleeve element (5) and then the two parts are introduced together into the tube bore (3).
4. Method according to one or more of the preceding claims, characterised in that a sleeve element (5) is used, of which the external cross-section, in particular the external diameter, is approximately the same size as or slightly smaller than the tube bore cross-section, in particular the tube bore diameter, before the rolling in of the profile (13).
5. Method according to one or more of the preceding claims, characterised in that a static mixer (6) is used, of which the cross-section, in particular the external diameter, is approximately the same size as or slightly smaller than the hollow section of the sleeve element (5), in particular the internal diameter thereof.
6. Method according to one or more of the preceding claims, characterised in that a static mixer (6) is used, which has spiral portions (8) which are adjacent in the longitudinal direction (L) and peripherally rotated in relation to one another, of which the outer edge (9), which in particular is rib-like, contacts an imaginary cylindrical sleeve surface (10).
7. Method according to one or more of the preceding claims, characterised in that the static mixer (6) and the sleeve element (5) are introduced into the tube bore (3) with loading of a free end portion (12) of the tube bore (3).
8. Method according to one or more of the preceding claims, characterised in that the end portion (12) of the tube bore (3), in particular after the rolling in of the profile (13), is extended in its diameter, in particular bored, and is subsequently finished on the surface.
9. Method according to one or more of the preceding claims, characterised in that at least one front longitudinal portion (20) of an injection connecting piece (21) is pressed axially with a non-positive fit into the extended end portion (12), which piece has an inner cavity (22), separate entrance ports (23, 24) for different feeding components to be fed to the anchor rod (1), as well as an outlet (25) positioned on the front longitudinal portion (20).
10. Anchor tube for an injection anchor, in the external surface area of which a profile is rolled in, in particular a thread extending continuously or in longitudinal portions, and in the tube bore of which a static mixer is positionally fixed in the longitudinal direction as a result of the at least local cross-sectional reduction of the tube bore, which reduction results from the rolling in of the profile, characterised in that the static mixer (6) within the tube bore (3) is enclosed by a sleeve element (5) at least in a longitudinal portion of the static mixer (6), in that the sleeve element has a hardness less than that of the static mixer (6), and in that the sleeve element (5) and the static mixer (6) are positionally fixed in a longitudinal direction (L) as a result of the at least local cross-sectional reduction which results from the rolling in of the profile (13).
11. Anchor tube according to claim 10, characterised in that a length of tube or a length of hose is provided as a sleeve element (5).
12. Anchor tube according to one or both of claims 10 and 11, characterised in that a static mixer (6) made from plastics material and a sleeve element (5) made from plastics material or rubber are provided.
13. Anchor tube according to one or more of the preceding claims 10 to 12, characterised in that the static mixer (6) has spiral portions (8) which are adjacent in the longitudinal direction (L) and peripherally rotated in relation to one another, of which the outer edge (9), which in particular is rib-like, contacts an imaginary cylindrical sleeve surface (10).
14. Anchor tube according to one or more of the preceding claims 10 to 13, characterised in that the static mixer (6) and the sleeve element (5) are positioned in the tube bore (3) with loading of an end portion (12) of the tube bore (3).
15. Anchor tube according to one or more of the preceding claims 10 to 14, characterised in that at least one front longitudinal portion (20) of an injection connecting piece (21) is pressed axially with a non-positive fit into the end portion (12), which piece has an inner cavity (22), separate entrance ports-(23; 24) for different feeding components to be fed to the anchor rod (1), as well as an outlet (25) positioned on the front longitudinal portion (20).

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