EP2003270A2 - System and method for fixing a rod-shaped or post-shaped object in the ground with multi-section holder part which can be screwed into the ground - Google Patents

Abstract

The system comprises an externally-threaded (2), holder shell (1) for the post (or rod), which is screwed into the ground. In a first stage the holder is constructed by pushing a number of holder shells (5, 6, 7) onto a matching core (4), relative to which they cannot rotate. The holder, once screwed (3) into the ground, surrounds the post with clearance. This clearance is filled completely. The filler introduced is e.g. sand, gravel, chippings, concrete or other bulk material. Independent claims are included for the following: (A) the method of fixing the rod or post; (B) and the tool (3) used with the fastening system.

Description

The invention relates to a fastening system for attaching a rod or post-shaped object in the ground with a screw-like receiving part to be screwed into the ground, which is provided at its outer periphery at least over part of its length with an external thread and in the attachment state, an end portion of the rod or post-shaped object receives and whose circumference surrounds at least in sections, with a screw-in, which has a dimensionally stable fitting core on which the receiving part for the purpose of screwing into the ground is rotatably attachable, according to the preamble of claim 1.

The invention further relates to a corresponding receiving part, the screwing-in tool, optionally required filling material and corresponding fastening methods.

Such a fastening system shows, for example, the DE 199 60 854 A1 , It is used for permanent or temporary installation of posts, poles and the like, as they are required for fences, information signs and boards, spin dryers in gardens and buildings of any kind made of wood. Such fastening systems are suitable for soils of all kinds, including scree floors, gravel beds, sandy and loamy soils, not only in the plane but also on dams and embankments. The sleeve-like receiving part may be (an impact sleeve or) a threaded sleeve, which is also referred to as a ground dowel or ground screw and is meant exclusively in the present case, when it is spoken of the "receiving part". This ground dowel / ground screw (hereinafter "receiving part") has in the example mentioned a cup-shaped filling section. After screwing the female part into the ground the rod-shaped object is inserted into the filling portion, which surrounds the lower end portion of the rod-shaped object at a distance. The rod-shaped object can then be aligned vertically, whereby directional deviations that have arisen during insertion of the receiving part into the ground, can be compensated. Then, the annulus between the lower end of the rod-shaped article and the cup-shaped filling portion is filled with the filling material.

The filler may be granular, such as granules, hard sand, split or rock material. But also an elastic plastic material comes into question, as well as a solidifying liquid mass, especially concrete. The use of a granular material has the advantage that the entire fastening device can be quickly removed again, for. For example, for temporary structures at exhibitions and fairs.

Said, designed as a screw sleeve fastening system corresponds with its cup-shaped filling portion in the receiving part in its design largely the well-known ground dowels with own receiving section at the top, in which the rod-shaped object is used directly, without interposition of a filling material in the receiving portion and secured there.

Such ground anchors are known in many embodiments; an example shows the DE 93 13 258 U1 , They usually consist of a lower threaded portion and the upper receiving portion, between which there may be a conical displacement portion. But there are also two parts in the sense that a retaining part (to be screwed into the ground anchoring part ( DE 202 20 515 U1 ) or an extension sleeve ( DE 200 00 183 U1 ) for receiving the rod, post etc. as a separate component can be attached.

All these known ground anchors are relatively solid. In fact, they must not only absorb the forces which the mast or post impinges on them when directly attached to them. she are especially heavily loaded when screwing into the ground. This is especially true when a manually or mechanically operated screwing tool engages at its upper end, for example with a bolt inserted transversely through the receiving portion, as is often suggested ( DE 93 13 258 U1 ). The high local load when initiating the torque can lead to a deformation of the ground dowel or receiving part, if their execution is not massive enough.

As a material for the receiving part of the known fastening system, therefore, for example, steel, hammered in one piece and hot-dip galvanized proposed (company publication "The new Krinner ground dowel system" Krinner GmbH, D-94342 Straßkirchen), but also plastic in large wall thickness or at least for ground anchors - a combination of plastic and metal ( DE 202 20 515 U1 ).

All these embodiments are therefore relatively expensive for a mass-produced, especially since they would be basically reusable, but practically often remain in the ground when the (only temporarily required) mast or post is removed.

Therefore, the development of the above-mentioned fastening system omitted DE 10 2005 023 465 B3 not only on a holding part as a separate component but on a holding part at all, by proposing to make the anchoring part itself as a sleeve-like receiving part so that it receives an end portion of the adjustable therein rod or post-shaped object and surrounds its circumference at least in sections.

And although the receiving part of the set post according to the teaching of this document surrounded by distance, so that between the rod or post-shaped object and the inner contour of the receiving part, an annular space is formed, which is filled with a filling material, whereby the rod or post fixed in Ground is anchored.

The cited document also proposes to provide the insertion tool for screwing this receiving part with a dimensionally stable fitting core, which rests largely or completely on the inner contour of the receiving part and thus largely fills and supports during screwing and thus by positive, in particular frictional adjustment in the Sense of Eindrehens the forces required for screwing and / or torque over a large area on the receiving part and so the only serving as formwork receiving part granted only its required for introduction into the ground dimensional stability.

Above all, this latter design has made it possible to produce the receiving part according to thin-walled and especially from cheaper materials such as plastics, which could be saved considerable costs.

This prior art is based on the finding that it is sufficient (with the absence of the possibility of the rod, posts or the like. Directly on the receiving part) with appropriate design of the screwing tool to measure the sleeve-like receiving part according to its function as formwork to which it is reduced once it is inserted into the ground and receives and holds the lower end of the rod-shaped part over the filler material.

The receiving part then serves only in the form of a formwork to hold the filler together, to diffuse into the surrounding soil and thus to prevent loosening of the anchorage and to support a consolidating setting of the filling material. In this case, the receiving part is supported even in this installed state to the outside of the solidifying soil, which in turn can not compress the receiving part, because its interior is then filled and stiffened by the filling material and the lower end of the rod-shaped part.

The fastening system described has proven extremely useful in practice and is therefore used extensively. It has become clear that a certain weakness lies in the fact that for the different applications of lightweight foundation equipment for fences, traffic signs, etc. on masts for cables, etc. up to foundations for larger structures such as pylons, bridges, etc. depending on the diameter and length differently sized receiving parts and correspondingly many different Einschraubwerkzeuge made and kept by the user , This causes, as regards the relatively expensive Einschraubwerkzeuge or their cores considerable additional cost and for this and for the amount to be kept different receiving parts a correspondingly high transport and storage costs.

Object of the present invention is therefore to provide a fastening system and the associated items as well as a method that avoids unnecessary costs that it with one or a small number of Einschraubwerkzeugen or passport cores and a few different receiving parts the widest possible range of Covering options.

This object is achieved by a fastening system having the features according to claim 1, by a receiving part having the features according to claim 17, by a screwing-in tool having the features according to claim 18 and by a method having the features according to claim 19. Advantageous embodiments will be apparent from the appended dependent claims.

The invention provides the solution in the modular construction of the fastening system by offering a plurality of different sleeve-shaped receiving elements, of which a smaller or larger number can be put together to the receiving part of the required dimensioning (length) depending on the requirements made in the individual case.

In the simplest case, these will be interchangeable receiving elements of a single same cross section, in which different load specifications only by juxtaposing a correspondingly larger number of receiving elements and correspondingly longer design of the receiving part can be taken into account. For very different load specifications but also groups of each combinable holding elements of different cross sections can be made available.

The design according to the invention is based on the finding that the modular design of such a fastening system allows this a broader field of application while saving storage and transport costs.

It makes no difference to the invention, whether the receiving part of the end of the rod or post set therein - as in DE 10 2005 023 465 B3 surrounds with a distance, so that its solid anchorage in the holding part and thus in the soil is first produced by a einzufüllendes filler, or if the rod or post and the holding part are shaped and dimensioned so that the rod or post without placement of a filler in can be held the receiving part. The subject matter of claim 1 accordingly relates to both variants mentioned. The solution with a filling material requiring distance between the receiving part and adjusted rod or post is the subject of a claim.

For the invention is further of minor importance, whether the receiving elements or the receiving parts formed from them thick-walled or thin-walled but nevertheless self-supporting stable are designed so that they could be screwed without them holding and supporting dimensionally stable fit core or if they are such a, they require more or less full-surface supporting Passkerns for screwing, as in the cited prior art to DE 10 2005 023 465 B3 is described. The subject matter of claim 1 accordingly also applies to all variants. The variant with a more or less over the entire surface of the receiving part fitting passport is the subject of a claim.

It certainly represents a particularly advantageous embodiment of the subject of the invention, because it has the advantages of saving material, the subject of the DE 10 2005 023 465 B3 brings with it, cumulative with the advantages of modular design by the receiving elements - as it is desirable for reasons of cost savings - not only thin-walled and therefore designed to save material, but beyond only a limited number arbitrarily combinable types must be maintained.

In that regard, the invention is based on the finding that even those by itself less stable receiving elements, if they are fitted accurately or substantially accurately to a common mating core and screwed into the ground, thereby supported and held in the same way as a single , contiguous receiving part, so they can be designed just as material-saving as a larger, coherent receiving part.

Also, after removing the screwing tool or the stable fitting core, adjusting the rod or post and filling the filling material, they are held in the same way in the soil and between soil and rod / post or filling material and supported like a single receiving part.

They also prevent in the same way as a single receiving part, the diffusion of the filling material into the surrounding soil and support the relaxation of the holding of the rod or post counteracting setting, in particular a free-flowing filler material such as granules, split, sand, etc.

For all this it does not even matter that the receiving elements are connected to each other. Because they are after their screwing into the soil, in which they are fixed by the mating core in position to each other after the removal of the mating core and the setting of the rod or post and filling the filler in the once occupied position sustainable determined.

Therefore, even for the adjustment of the rod or post in the receiving part, no problems arise even if the receiving elements should keep it accurately and without filler.

In this case, of course, especially when the receiving elements unconnected plugged onto the mating core and screwed into the ground, the required for screwing the receiving elements external thread to hold the elements in relation to each other and in the soil significantly. Therefore, preferably, each receiving element will be equipped with an external thread.

But this is not necessarily required. If several receiving elements are used, it can be dispensed with in individual, such as a placed between two receiving elements with threaded receiving element, even on an external thread. This is conceivable in the same way for a receiving element which is provided only as an upper closing element to the earth's surface, in particular when it is connected to the adjacent receiving element.

The modular design of the receiving part is suitable for all known forms of screw foundations, regardless of whether they are cylindrical open at the bottom, tapered towards the lower end tapered or truncated cone shaped with lower opening. Of course, the simplest is the downwardly open, cylindrical shape, since it requires only one, namely a cylindrical sleeve-like receiving element, which can be assembled in the necessary majority to the correspondingly sized holding part.

However, the receiving part can also be formed from at least one sleeve-like receiving element cylindrical contour and a receiving element with at least partially tapered or frusto-conical contour in the installation direction with external thread, which requires that a corresponding module is provided.

Furthermore, the receiving part can be formed from a sleeve-like receiving element cylindrical contour and / or a receiving element cone or frusto-conical contour and a receiving element as the upper closing element with or without external thread, which requires a corresponding element as a further element.

Thus, in the simplest case, the fastening system according to the invention requires a single (cylindrical) receiving element and, with a maximum of five different receiving elements (cylindrical receiving element with and without external thread, pointed conical, frustoconical receiving element and upper closing element) of the same cross section, offers a broad spectrum for a wide range of load specifications of possible combinations.

As already mentioned, it is necessary, since the receiving elements are plugged for screwing into the soil on the common mating core, and are firmly anchored in their position after screwing in the ground, no connection of the receiving elements with each other. However, a non-rotatable or a tensile and shear-resistant connection of the receiving elements with each other, if desired, to achieve with simple means.

The non-rotatable connection results, for example, without further ado, when the receiving elements in the positive connection, approximately in cross-section as a polygon, are plugged into each other.

The tensile and shear-resistant connection can be realized in a simple manner by clip connections in the region of the connector.

The non-rotatable attachability of the sleeve-like receiving elements on the passport core can be accomplished in different ways. In addition to a frictional connection, which can also be generated or reinforced by a hydraulic expansion of the dowel core, in particular a form fit comes into consideration.

For example, ribs may be formed on the inside of the receiving elements, which extend in the longitudinal direction of the receiving elements and engage in corresponding longitudinal grooves of the fitting core.

But also come passages, which are formed axially offset on the receiving elements and in their polygonal or similar inner cross-section correspond to the outer cross section of the fitting core.

However, these two variants assume that the receiving elements have a sufficient inherent rigidity, that is, that they do not require the more or less full-surface support through the fitting core when screwing. Then, however, they also have the advantage that by appropriate different dimensioning of the ribs or passages under certain circumstances also receiving parts / receiving elements of different dimensions (different outer diameter) can be operated with one and the same Einschraubwerkzeug.

Finally, the receiving elements themselves may have an at least inwardly polygonal or a similar cross section, which corresponds to the outer cross section of the fitting core. This variant has the advantage that the fitting core can support the correspondingly lightly constructed receiving part / receiving element over its entire surface.

It is understood that the required for attaching the receiving elements on the fitting core in the receiving elements cross section must be free, so in particular may not protrude into the cross section defined by the ribs or the passages.

If the wall of the receiving element itself forms the inner cross-section of the receiving element corresponding to the outer cross-section of the passport core, this full-surface contact should be ensured, at least in the case of receiving elements which require a full-surface installation of the dowel core for screwing in, that the receiving parts are now plugged together or loose mounted on the dowel core - over the entire length of the formed receiving part (with the exception of one area tapered inner contour in a cone or truncated cone-shaped receiving element) have a substantially continuous inner cross-section. This is the only way to ensure that a screwing-in tool with a dimensionally stable fitting core corresponding outer contour can bring in a screwing of the receiving parts placed thereon into the ground with the greatest possible uniform distribution of the forces acting thereon.

The exception "an area of tapered inner contour in a conical or frusto-conical receiving element" merely takes into account the fact that, in the conical region, there is naturally no "continuously variable cross-section". In the interests of best possible load distribution, the screwing tool or its mating core should, of course, also be adapted as far as possible in its outer contour to the inner contour of the conical or frusto-conical receiving element in this area, so that this part of a receiving element as fully as possible with the mating core in contact can be brought, the opposing shapes are to be avoided in any case.

For the corresponding positive interpretation of receiving elements and fitting core, of course, other than the previously described designs come into consideration. In any case, it must be ensured with them, however, that the receiving elements in the desired type, number and order on the fitting core are plugged so that the fitting core passes through each of the receiving elements, they coaxially aligned rotationally fixed, possibly even with the largest possible transmission of the Screwing forces occurring holds, and that the dowel core can be withdrawn after screwing the receiving elements in a simple manner from the screw foundation.

For this purpose, it is essential that the outer contour of the dimensionally stable fitting core of the screw-in tool, whatever it may be designed in detail, corresponds to the inner contour of the receiving elements or their passages.

The coupling between the sleeve-like receiving elements and the dowel core can then be carried out, for example, in such a way that - as in DE 10 2005 023 465 B3 described in more detail - formed on the outer circumference of the sleeve-like receiving elements threads to the interior of the receiving element are open and form a helical profiling, which is adapted to an external thread, which is formed on the outer circumference of the dowel core, wherein the engagement and disengagement of receiving elements and Pass core is made by oppositely directed rotational movements.

It is understood that the fastening system according to the invention can only develop its full benefits if the dimensionally stable fitting core has a length corresponding to the maximum number or the total length of the maximum number of receiving elements to be combined in a practical use to a receiving part.

If this is ensured, it is also ensured that the sleeve-like receiving elements after their - unconnected or interconnected - attaching to the fitting core together with this form an insert body, which allows the common complete screwing the receiving elements into the ground.

A thin-walled receiving element is naturally mechanically most endangered when it is introduced into the ground in the region of its penetrating into the ground tip. Therefore, it can further be provided that the sleeve-like receiving elements form an insert body with inserted fitting core together with this insert body which ends in its direction of the ground facing in a cone which is partially or completely formed by the sleeve-like receiving elements in the direction of insertion passport core. After insertion of the insert body in the ground of the fitting core is removed again, so that only serve as formwork receiving elements remain in the ground.

The dowel core of the insertion tool thus engages through the hollow sleeve-like receiving element until it projects with the tip of its cone down from the lower in the screw-in receiving element. The insert body consisting of the fitting core and the receiving elements penetrates into the ground with the tip of the fitting core first. Since the receiving part or its elements is usually a mass portion that can only be used once or are, however, the insertion tool can be used over and over again, it is worthwhile to form this insertion tool of a resistant material in high quality, so that it with its tip can serve many times as an indenter into the ground.

Alternatively, a configuration is possible in which the lower sleeve-like receiving element in the direction of screwing in its direction of engagement facing the ground ends in a cone whose tip region consists of a reinforced material. For example, the closed tip of the sleeve-like receiving element may be made of a different plastic than the rest of the receiving element, or the tip may be reinforced by a fiber material. Even a tip made of metal on an otherwise plastic receiving element is conceivable. Since the sleeve-like receiving element due to its lower thickness in total is cheaper in any case, the associated with this somewhat more effort can be more than justified.

Moreover, the materials suitable for the receiving elements and the fitting core of the insertion tool are based on the particular application. In addition to the load of erected rod or post-shaped object and the computational life of the attachment must be considered. Preferably, the fitting core of the insertion tool consists of a metal material, preferably of steel, while for the sleeve-like receiving elements in each case a plastic comes into question. Suitable plastics are, for example, polyamides, polypropylenes, polyethylenes and polystyrenes, which are listed in the here Sequence at the same time mean an increasing life of the receiving elements in the ground.

If a filling material is part of the fastening system, free-flowing materials, such as sand, split or quarry stone, but also granules, for example of plastic, are particularly suitable for this purpose. Alternatively, concrete can also be used.

The invention is also the formable from a plurality of receiving elements, screwed into the ground, sleeve-like receiving part for attaching a rod or post-shaped object in the ground and
the associated Einschraubwerkzeug for such a fastening system and finally
the fastening method to be used in the application of the fastening system, characterized in the case of mounting elements of sufficient inherent rigidity, which require no filling material, by the method steps according to claim 19, otherwise by the method steps according to claim 20:

• Figur 1 zeigt eine denkbare Zusammenstellung mehrerer Aufnahmeelemente (zylindrisches und kegelstumpfförmiges Aufnahmeelement sowie Aufnahmeelement als oberes Abschlusselement) mit Außengewinde zur Kombination als hülsenartiges Aufnahmeteil.
• Figur 2 zeigt die Zusammenstellung nach Figur 1 in zusammengesteckter Form als hülsenartiges Aufnahmeteil.
• Figur 3 zeigt einen Querschnitt durch die Zusammenstellung von Aufnahmeelementen nach Figur 1.
• Figur 4 zeigt einen Querschnitt durch das zusammengesteckte Aufnahmeteil nach Figur 2.
• Figur 5 zeigt einen Schnitt durch ein zylindrisches Aufnahmeelement mit einem Durchlass mit vieleckförmiger Innenkontur zum Aufstecken auf einen Passkern entsprechenden Außenquerschnitts.
• Figur 6 zeigt das zylindrische Aufnahmeelement nach Figur 5 in perspektivischer Darstellung.
• Figur 7 zeigt einen Querschnitt durch das zylindrische Aufnahmeelement nach Figur 5 und 6 im Bereich seines Durchlasses mit vieleckförmiger Innenkontur.
• Figur 8 zeigt ein Einschraubwerkzeug in Form eines Sechskants mit drei darauf aufgesteckten zylindrischen, geschnitten dargestellten Aufnahmeelementen mit je einem Durchlass mit einem dem Sechskant des Eindrehwerkzeuges entsprechendem Innen-Sechskant.
• Figur 9 zeigt eines der Aufnahmeelemente nach Figur 8 in perspektivischer Darstellung und teilweise geschnitten.
• Figur 10 zeigt die Zusammenstellung von Aufnahmeelementen 5, 6, 7 nach Figur 1 in der zu einem Aufnahmeteil zusammengesteckten Form gemäß Figur 2 und das zugehörige Einschraubwerkzeug mit Passkern in perspektivischer Darstellung.
• Figur 11 zeigt das Einschraubwerkzeug nach Figur 10 mit darauf aufgestecktem Aufnahmeteil nach Figur 10 perspektivisch und teilweise geschnitten.
• Figur 12 zeigt eine Einheit aus Einschraubwerkzeug und darauf aufgestecktem Aufnahmeteil in perspektivischer Darstellung.

The invention will now be explained in more detail with reference to exemplary embodiments:

• FIG. 1 shows a conceivable combination of several receiving elements (cylindrical and frusto-conical receiving element and receiving element as the upper closing element) with external thread for combination as a sleeve-like receiving part.
• FIG. 2 shows the compilation FIG. 1 in mated form as a sleeve-like receiving part.
• FIG. 3 shows a cross section through the collection of recording elements FIG. 1 ,
• FIG. 4 shows a cross section through the mated receiving part FIG. 2 ,
• FIG. 5 shows a section through a cylindrical receiving element having a passage with vieleckförmiger inner contour for attachment to a mating core corresponding outer cross-section.
• FIG. 6 shows the cylindrical receptacle after FIG. 5 in perspective view.
• FIG. 7 shows a cross section through the cylindrical receiving element FIGS. 5 and 6 in the area of its passage with polygonal inner contour.
• FIG. 8 shows a screw-in tool in the form of a hexagon with three mounted thereon cylindrical, cut shown receiving elements, each with a passage with a hexagon of the screwing corresponding inner hexagon.
• FIG. 9 shows one of the recording elements FIG. 8 in perspective and partially cut.
• FIG. 10 shows the composition of receiving elements 5, 6, 7 after FIG. 1 in the assembled to a receiving part form according to FIG. 2 and the associated Einschraubwerkzeug with fitting core in perspective view.
• FIG. 11 shows the screwing after FIG. 10 with attached on the receiving part after FIG. 10 in perspective and partially cut.
• FIG. 12 shows a unit from Einschraubwerkzeug and attached thereto receiving part in a perspective view.

FIG. 1 shows a conceivable combination of several different receiving elements 5, 6, 7 for combination as a sleeve-like receiving part 1, which can be screwed into the soil and which receives in the state of attachment an end portion of a rod or post-shaped object which is held there either form or frictionally or by means of a filled in the space between the receiving part and the rod or mast filling material.

In the FIG. 1 Assembled shown consists of a cylindrical receiving element 5, a (partially) frusto-conical receiving element 6, in its place also a (partially) conically downwardly tapered receiving element 6 can occur, and a receiving element as upper end element. 7

In this case, the first-mentioned receiving elements 5, 6 have an external thread 2, is omitted in the upper end element 7 on the external thread 2.

However, the compilation can be chosen quite differently. Thus, the sleeve-like receiving part 1, for example, consist only of a plurality of cylindrical receiving elements 5. But it may also consist of several such elements and a (completely or partially) conical or frusto-conical shaped receiving element 6 or of such a and a receiving element as upper end element 7 Finally, it may consist of a (full or partial) cone or truncated cone-shaped receiving element. 6 and a receiving element as the upper end element 7 are formed.

In this case, all elements can have an external thread 2. But to the system can also, as shown here in the receiving element as upper end element 7, corresponding elements without external thread belong, which can be used in a suitable case in the combination of elements, for example, between two elements with external thread.

The receiving elements 5, 6, 7 can be designed thick-walled or thin-walled self-supporting, in which case their adaptation to the Outside profile of the fitting core 4 of a Einschraubwerkzeuges 3 not only via a corresponding design of the wall of the receiving elements 5, 6, 7 directly, but also by the installation of correspondingly shaped ribs or passages 8 can be done, as shown in the FIGS. 5 to 9 is shown in more detail.

But the receiving elements 5, 6, 7 can also be so thin-walled that they can not easily transfer the forces and moments occurring when screwing. Then must - as in particular in the Figures 10 and 11 is shown in more detail - a dimensionally stable fitting core 4 of the system belonging screwing tool 3, to which they are plugged, be shaped so that it largely fills the receiving elements by positive fit and supports, so that they get their required for screwing into the soil dimensional stability and the forces and / or moments required for screwing in are transferred to it as uniformly as possible over a large area.

This can, if a corresponding frictional engagement is ensured, even with a round inner cross section of the receiving elements 5, 6, 7 and a corresponding outer cross section of the fitting core 4 can be ensured. Preferably, however, this is achieved by a (at least internal) polygonal cross-section of the receiving elements 5, 6, 7 - as in FIG. 1 is shown - and a corresponding outer cross section of the Einschraubwerkzeuges 3 and its mating core 4 into consideration, as in FIG. 10 . 11 is shown.

The receiving elements 5, 6, 7 can be connected to each other, for example by training of tapered plug-in areas 11 and unused plug-in areas 12 plugged into each other and / or be locked together.

In this case, a rotationally fixed connection, for example, be generated in that the nestable receiving elements 5, 6, 7 - as shown in the drawings - have a polygonal cross-section.

In addition, a thrust and tensile connection, for example, by corresponding locking elements (locking grooves 9 and lugs 10) are made.

Such a connection may be useful when it is necessary to transfer forces from one to the other receiving element 5, 6, 7 or even to facilitate the handling of the multiple parts that are assembled into a receiving part 1.

However, such a connection of the receiving elements 5, 6, 7 is dispensable in itself, if - as explained above - such form-fitting or frictionally be plugged onto the mating core 4, that the forces required for driving into the ground forces to a sufficient extent immediately Each individual receiving element 5, 6, 7 can be transmitted.

If such a positive or frictional connection between the passport core 4 and receiving elements 5, 6, 7 is ensured when screwing in, the receiving elements 5, 6, 7 can also be screwed into the ground without connection to one another, where they then inter alia by the external thread - Are anchored so that they no longer change their position even after removing the Einschraubwerkzeuges 3.

However, if the receiving elements 5, 6, 7 are to be able to be plugged onto the mating core 4 with as far as possible contact with them, then the internal cross-section of the receiving elements 5, 6, 7 must be designed to be continuously uniform in the axial direction. The same applies to the outer cross-section of the mating core 4. Only the conical or partially conical region of the conical or frusto-conical receiving element 6 allows, as this receiving element 6 is used only as a lower end - a different, for example conical design of the inner Cross-section and the corresponding part of the outer cross-section of the mating core 4. Here, too, but for the production of a largely extensive power transmission as possible a corresponding - for example, conical - design of the outer contour of the mating core. 4 and the inner contour of the receiving element 6, as in FIG. 10 and 11 is shown.

FIG. 2 shows the composition of receiving elements 5, 6, 7 after FIG. 1 in their to a sleeve-like receiving part 1 rotatable, push and pull together assembled form.

FIG. 3 shows a cross section through the composition of receiving elements 5, 6, 7 according to FIG. 1 ,

In particular, the locking elements 9, 10 as locking grooves 9 and locking lugs 10 are better recognizable.

In addition, it is easily recognizable here how the receiving elements 5, 6, 7 can be designed in their plug-in areas 11, 12 such that, when plugged together, a continuously uniform inner cross-section results in the axial direction.

FIG. 4 shows a cross section through the mated receiving part 1 after FIG. 2 ,

Again, in particular the inventive design of the plug-in areas 11 with their locking elements 9, 10 easily recognizable in their latching.

FIG. 5 shows a section through a cylindrical receiving element 5 with a passage 8 with polygon-shaped inner contour for adaptation to a mating core 4 corresponding outer cross-section.

It is understood that the other receiving elements 5, 6, 7 of the fastening system corresponding passages 8 vieleckförmiger inner contour for adaptation to a pass core corresponding outer cross-section should have and that each receiving element 5, 6, 7 instead of the one may also have a plurality of such passages 8.

Likewise, it is understood that the passages 8 define the free inner cross-section of the receiving elements 5, 6, 7, in which - so that the Aufsteckbarkeit the receiving elements 5, 6, 7 is ensured on the passport core - nothing may protrude.

FIG. 5 also shows the plug-in areas 11, 12 of the receiving element 5, here in the form of a (in the installation direction lower) cross-sectional taper 11 and an upper, unperforated cross-section 12. The upper, unperforated cross-section 12 of the or a receiving part 5, 6, 7 allows the insertion of the correspondingly tapered lower plug-in portion 11 of another receiving element 5, 7 and the lower, tapered plug portion 11 of the or a receiving element 5, 7 allows its insertion into the upper, unused plug portion 12 of the receiving elements 5, 6, 7th

Of course, rejuvenated and unused plug-in area can also be interchanged.

It is understood that the tapered plug-in portion 11 remains in its internal cross-section outside the cross section of the passages 8, so that the insertion of the passport core 4 by the receiving elements 5, 6, 7 or through the passages 8 is not hindered.

FIG. 6 shows the cylindrical receiving element 5 after FIG. 5 in a perspective sectional view.

FIG. 7 shows a cross section through the cylindrical receiving element 5 after FIGS. 5 and 6 in the region of its passage 8 with external thread 2, polygon-shaped passage 8, tapered plug-in area 11 and non-tapered plug-in area 12.

FIG. 8 shows an inventive Einschraubwerkzeug 3 with a fitting core 4 in the form of a hexagon, a handle 13 and with three plugged thereon, cut cylindrical receiving elements 5 with external thread 2, each having a polygonal passage 8 with a polygon of the fitting core 4 corresponding inner cross-section ,

The receiving elements 5 can be seen their tapered plug-in areas 11 and their unused plug-in areas 12, but are unconnected plugged onto the mating core 4.

FIG. 9 shows one of the cylindrical receiving elements FIG. 8 , partially cut, with external thread 2, polygon-shaped passage 8, tapered plug-in area 11 and non-tapered plug-in area 12.

FIG. 10 shows the composition of receiving elements 5, 6, 7 after FIG. 1 in the assembled to a receiving part 1 form according to FIG. 2 and the associated Einschraubwerkzeug 3 with fitting core 4 in a perspective view. The screw-in tool 3 has at its upper end an insertion opening 14 for a handle 13, a fitting core 4, which merges as an octagon with broken edges down into a conical shape 15. Its shape is recognizable adapted to the inner contour of the receiving part 1 both in the region of the polygon and in the conical region of the frusto-conical receiving element 6, so that when attaching the receiving part 1 on the tool 3 shown a largely planar contact of the fitting core 4 results in the receiving part 1 , The conical shape 15 of the fitting core 4 goes down into a drill bit 16, which protrudes down from the plugged-receiving part and the soil breaks up or loosened when screwing the device into the ground.

FIG. 11 shows the screw 3 after FIG. 10 with attached receiving part 1 after FIG. 10 in perspective and partially cut. Here, not only the largely full-surface contact of the parts to each other clearly, but also shown how the drill bit 16, the receiving part 1 durchdingt and protrudes down therefrom as a drill bit.

FIG. 12 shows a unit of Einschraubwerkzeug 3 and mounted thereon receiving part 1 in a perspective view. The screw-3 is provided here with a handle 13. Its mating core 4 is formed as a hexagon. On it are the cylindrical ones Receiving elements 5 attached. The screwing-in tool 3 penetrates the receiving elements 5 or the receiving part 1 formed from them and merges at its lower, near-earth end into a conical bore extension 17 with outer spiral.

List of reference numbers:

1

sleeve-like receiving part

2

external thread

3

screwing

4

Dimensionally stable fitting core

5

Cylindrical receiving element

6

Conical or frusto-conical receiving element

7

Receiving element as the upper closing element

8th

passages

9

locking grooves

10

locking lugs

11

Rejuvenated mating area

12

Unjuvenated mating area

13

Handle of Einschraubwerkzeuges

14

Insertion opening for handle 13

15

Cone shape of the mating core 4

16

drill bit

17

Cone-shaped drill extension

Claims (20)

System for fixing a rod-shaped or post-shaped object in the ground, consisting of a sleeve-like receiving part (1) which can be screwed into the ground and which is provided with an external thread (2) on its outer circumference over at least part of its length and which in the attachment state has an end region receives the rod-shaped or post-shaped object and surrounds its circumference at least partially, and with a screwing (3), which has a dimensionally stable fitting core (4) on which the receiving part (1) for the purpose of screwing into the soil rotationally attachable, characterized characterized in that the receiving part (1) by non-rotatable attachment of a plurality of sleeve-like receiving elements (5, 6, 7) on the fitting core (4) can be formed. Fastening system according to claim 1, characterized by a receiving part (1) which surrounds the end region of the rod or post-shaped article at a distance and a filling material, in particular sand, split, granules or a similar bulk material or concrete, the annular space between the end region the rod or post-shaped object and the inner contour of the receiving part (1) fills. Fastening system according to claim 1 or 2, characterized in that the dimensionally stable fitting core (4) of the Einschraubwerkzeugs (3) largely fills the inner contour of the receiving part (1) when screwed into the ground and supports, so that serving only as formwork, thin-walled receiving part ( 1) only thereby obtains its dimensional stability required for screwing into the ground and the forces and / or moments required for screwing in as large as possible are transferred to the receiving part (1). Fastening system according to one of the preceding claims, characterized in that the receiving part (1) of a plurality of sleeve-like receiving elements (5, 6) with external thread (2) can be formed. Fastening system according to one of the preceding claims, characterized in that the receiving part (1) of sleeve-like receiving elements (5, 6) with external thread (2) and receiving elements without external thread can be formed. Fastening system according to one of the preceding claims, characterized in that the receiving part (1) is formed from a plurality of sleeve-like receiving elements (5) with a cylindrical contour. Fastening system according to one of the preceding claims, characterized in that the receiving part (1) from at least one sleeve-like receiving element (5) cylindrical contour and a receiving element (6) in the installation direction at least partially conical or frusto-conical tapered contour with external thread (2) is formed , Fastening system according to one of the preceding claims, characterized in that the receiving part (1) of a sleeve-like receiving element (5) cylindrical contour and / or a receiving element (6) conical or frusto-conical contour and a receiving element as upper end element (7) with or without External thread (2) is bildbar. Fastening system according to one of the preceding claims, characterized in that the sleeve-like receiving elements (5, 6, 7) are rotatably connected to one another. Fastening system according to one of the preceding claims, characterized in that the sleeve-like receiving elements (5, 6, 7) by positive engagement rotatably connected to each other, in particular are plugged into one another. Fastening system according to one of the preceding claims, characterized in that the sleeve-like receiving elements (5, 6, 7) can be connected to one another by pushing and pulling. Fastening system according to one of the preceding claims, characterized in that the non-rotatable attachability of the sleeve-like receiving elements (5, 6, 7) on the mating core (4) is ensured by positive locking, for example by a. Ribs which are integrally formed on the receiving elements, extend in the longitudinal direction and engage in corresponding longitudinal grooves of the fitting core (4), or b. Passages (8) which are integrally formed on the receiving elements (5, 6, 7) axially offset and correspond in their polygonal or similar internal cross section to the outer cross section of the fitting core (4), or c. an at least inwardly polygonal or a similar cross section of the receiving elements (5, 6, 7), which corresponds to the outer cross section of the fitting core (4). Fastening system according to one of the preceding claims, characterized in that the sleeve-like receiving elements (5, 6, 7) - with the exception of the conical or frusto-conical portion of the receiving elements (6) with at least partially conical or frusto-conical contour - in the axial direction substantially have continuously consistent inner cross section. Fastening system according to one of the preceding claims, characterized in that the outer contour of the dimensionally stable fitting core (4) of the Einschraubwerkzeugs (3), the inner contour of the receiving elements (5, 6, 7) or their passages (8). Fastening system according to one of the preceding claims, characterized in that the dimensionally stable fitting core (4) of the Einschraubwerkzeugs (3) in its length corresponds to the maximum number or the maximum length of the practical use of a receiving part (1) receiving elements (5, 6, 7) , Fastening system according to one of the preceding claims, characterized in that the sleeve-like receiving elements (5, 6, 7) made of a plastic and the fitting core (4) of the Einschraubwerkzeugs (3) made of a metal material, preferably made of steel. By rotatably attaching a plurality of receiving elements (5, 6, 7) on a fitting core (4) of a Einschraubwerkzeugs (3) formable, screwed into the ground, sleeve-like receiving part (1) for attaching a rod or post-shaped object in the ground according to claims 1 to 16. Screwing tool (3) for a fastening system according to claims 1 to 17. Method for fixing a rod-shaped or post-shaped object in the ground according to the system of claims 1 to 16 by means of receiving parts according to claim 17 and screwing-in tool according to claim 18 and filling material according to claim 2, comprising the following steps: a. Determination of soil conditions and static requirements aa. kind bb, form cc. Dimensioning of the receiving elements (5, 6, 7) or the receiving part (1) b. Selection of the corresponding screw-in tool (3) c. Selection of the corresponding receiving elements (5, 6, 7) d. Plugging or plugging together and attaching the selected receiving elements (5, 6, 7) to the dimensionally stable fitting core (4) of the screw-in tool (3) e. Screwing in the unit made of dowel core (4) and attached receiving part (1) or receiving elements (5, 6, 7) in the soil f. Removing the screw-in tool (3) G. Adjusting the end portion of the rod or post-shaped object in the receiving part (1) Method according to claim 19, characterized by the following further method steps: a. Choice of filling material for filling the annular space between the end region of the rod or post-shaped article and the inner contour of the receiving part (1) suitable and b. Filling the gap.

Images