DE202005007966U1 - Foundation system for aligning and fixing a post in the ground has a shape-stable fitment core adjoining and supporting inner contour of socket part to transfer forces with relatively short force flow path - Google Patents

Abstract

The foundation system has an insert tool with shape-stable fitment core (10) adjoining and supporting the inner contour of the socket part (1) which is to be inserted in the ground. The forces and/or moments required to insert the post in the ground are transferred to the socket part with a relatively short force flow path compared to the length so that the socket part can be made of a thin walled plastics. The sleeve-like socket part ends in the insert direction facing the ground in a cone (2) with a pointed tip (5).

Description

The The invention relates to a foundation system for fixing a rod or post-shaped object in the ground with in a self-supporting to be introduced into the ground sleeve-like Receiving part, which in the attached state, an end portion of the rod or post-shaped Object receives and with an insertion tool, the insertion the receiving part is in contact with this, according to the preamble of claim 1 and such a receiving part according to the preamble of claim 11.

Out DE 199 60 854 A1 An attachment system is known. 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. The fixing system is suitable for all types of soil, including scree, gravel, sandy and loam soils, not only on the level, 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 anchor. The receiving part has a cup-shaped filling section. After driving or screwing the receiving part into the ground, the rod-shaped object is inserted into the filling section, which surrounds the lower end region of the rod-shaped article at a distance. The rod-shaped object can then be aligned vertically, which can compensate for directional deviations that have arisen when inserting the receiving part in the ground, again. 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 example in temporarily created structures at exhibitions and fairs.

In the case of the fastening system mentioned at the outset, the receiving parts with their cup-shaped filling section are predominantly designed as threaded sleeves. In their design they correspond to the so-called ground dowels with a receiving portion at its upper end, in which the rod-shaped object is used directly, without interposition of a filling material, in the receiving portion and fixed 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 these two sections may also be a conical displacement section, on which also a thread can be provided.

The known ground anchors and, accordingly, the receiving part of the initially mentioned fastening device are relatively solid. Namely, the ground anchors must not only absorb the forces originating from the mast or post fastened directly thereto, but, like the receiving part of the known fastening systems, they are heavily loaded when being screwed into the ground, in particular by a long force flow path. This is especially true when a manually or mechanically actuated insertion tool engages a pin inserted transversely through the receiving portion located at the top, 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.

First right that applies to a receiving part which is designed as a wrapping sleeve. The wrapping with a heavy impact device may also lead to deformation of the wrapping sleeve, if in a known manner when driving in an intermediate piece e.g. made of hardwood is used, unless such an impact sleeve is very strong dimensioned.

As a material for the receiving part of the known fastening systems, for example, steel, hammered from 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 of these embodiments are relatively expensive for mass-produced items. In addition, ground anchors and receiving parts, despite the fundamental possibility of their reusability often remain in the ground when the only temporarily erected or to be fixed mast or post is removed. This is a relatively expensive manufactured part prematurely lost.

Of the The invention is therefore based on the object, a foundation system, the receiving part cheaper and with less material to produce is and which thereby still its well-known good performance properties, in particular its dimensional stability especially when introduced into the soil maintains, as well to create a receiving part with these properties.

The solution This object is achieved according to the invention in that in the foundation system according to the invention the insertion tool has a dimensionally stable fitting core, the the inner contour of the receiving part largely rests and these on supports this way and by an existing at least in certain major areas, over a substantial part of its length extending positive and frictional Adaptation in the sense of introducing the required for introduction personnel and / or moments surface, in particular preferably large area, up transmits the receiving part, wherein the latter thin-walled and is formed of plastic. So the recording part especially thin-walled accomplished It can be important to get into the ground required, exerted by the fitting core on the receiving part forces so in the receiving part are introduced, that the length of the power flow in the Initiation of the forces preferably is low. That means that from the mating core into the receiving part applied during insertion Forces via a positive connection, which possible is large, preferably over a big Part of the length the receiving part, in particular substantially over the entire length of the Receiving part, preferably via the length of the cone-shaped Section of the receiving part or in the case of a cylindrical Shape of the receiving part preferably either over the entire length or at least about a substantial part of the length of the receiving part, is introduced.

in the Fall of a wrapping sleeve having a conical section is important in that the effective area, on which the impact forces work, if possible is great and over a relatively long portion of the length of the receiving part distributed as is the case with a cone, for example. Of the Cone itself also represents a form-locking element, in addition other surfaces to transfer the required forces provided by the fitting core on the receiving part in its inner contour could be.

in the Case of a screw sleeve the introduction of force is at least over a length of the receiving part, which the anchoring serving external thread corresponds to what usually represents a substantial part of the total length of the receiving part. In known Schraubhülsen (which conventionally as ground anchor often In contrast, the introduction of forces in the Usually only in the upper part of the screw sleeve. Therefore, a high torsional rigidity, which usually only achieved by suitable materials or wall thicknesses may be required in the known screw sleeves. In contrast, will According to the invention, the length of Force flow at initiation of the forces kept as low as possible, i. the introduced into the receiving part of the dome core forces are over a preferably size Length distributed. The length over which the force is applied from the fitting core to the receiving part, is provided in particular in the areas of the receiving part, which in the Introducing into the ground to experience their greatest burden. By this form of force application to reach a very short Kraftflussweg, which allows the receiving part very thin-walled perform.

By "thin-walled" is here understood a wall thickness of the plastic receiving part of the foundation system, which is significantly reduced compared to conventional screw sleeves or impact sleeves Surprisingly, it has been shown that in such plastic-receiving parts even with a considerable reduction in wall thickness still a self-supporting The positive locking elements provided in the interior of the receiving part, via which the forces and / or torques required for insertion are introduced into the receiving part, additionally contribute to the self-supporting dimensional stability because they extend over at least a large part of the length of the receiving part The external thread in the screw sleeves as well as fin-like webs in the case of impact sleeves on their outside represent structural elements which serve to increase the dimensional stability in the sense of a self-supporting property. Self-supporting means in this context that the receiving part sufficiently holds a rod-shaped component without filling with a filler. The rod-shaped component may on the one hand be formed so that it fits in a substantially congruent shape in the upper region of the receiving part or is held in particular for the purpose of alignment in an eccentric insert part, as for example from the EP 0 842 342 B1 or the DE 295 122 37 U is known, wherein the specific embodiment of the eccentric insert part is taken in reference. If the rod-shaped component is inserted into the receiving part, so remains - if no filling material is used - the space between the receiving part and the rod-shaped component free, that is, the space formed as a ring frame space is not filled, the rod-shaped member is in the lower part of the Receiving part supported when the latter is conically tapered downwards. Self-supporting means, therefore, that the receiving part is stiffer than, for example, a non-self-supporting formwork whose dimensional stability is given on the one hand outside by the surrounding soil and on the other hand by filling with filling material.

Self-supporting in the sense of the present invention, however, the receiving part, if it is can be used without inner filling with sufficient dimensional stability and strength despite the significantly reduced wall thickness.

at Using high quality plastics, it is even possible that Wall thickness further reduce without the strength properties thereby would be reduced. This makes it possible, not only to a considerable extent Save material and thus the receiving parts of the foundation system according to the invention significantly cheaper to manufacture, but reducing the amount of plastic used is about that out of ecological Points of view extraordinarily advantageous.

A commercial known plastic screw a length of, for example, 330 mm, at least in the upper area, in which the rod or post-shaped Subject is used, a wall thickness of 3.5 to 4.5 mm. In contrast, becomes the wall thickness in the receiving part of the foundation system according to the invention considerably reduced, so that wall thickness-length ratios in the range of 8: 1000 to 1: 1000, preferably between 7: 1000 to 1: 1000, more preferably between 5: 1000 to 1: 1000 and more preferably between 4: 1000 to 2: 1000. Despite this pronounced invention thin Training the plastic receiving part allows the necessary strength and self-supporting dimensional stability for anchoring a rod or post-shaped object in the ground achieve.

The Invention makes use of the knowledge that it is sufficient the sleeve-like thin To measure the recording part alone according to its function, if it is in the Soil is inserted and the lower end of the rod-shaped part receives. This is the permanent state in which the foundation system located. The receiving part supports through its self-sustaining property to the outside solidifying soil and therefore is not inside compressible.

So far became the sleeve-like Recording part mainly dimensioned according to the stresses applied during its insertion occur in the soil by the action of the insertion tool. The insertion tool of the foundation system according to the invention has In contrast, a dimensionally stable fitting core on the inner contour of the receiving part largely complete rests and this additionally supports in the introduction, and by positive locking and frictional Adjustment the forces and / or moments required for the introduction as possible large area on the Receiving part transmits.

Thereby granted the pass core during the phase of greatest stress, d. H. while the introduction, the thin-walled Recording part temporarily a required for introduction into the ground increased dimensional stability. Incidentally, can but the recording part according to specification its much lower stress in the anchored in the ground steady state be measured. The receiving part can therefore be much smaller dimensioned and / or made of a simpler material than in the fastening systems According to the state of the art. It is therefore clear in the production cost-effective, what kind of a mass-produced article of considerable importance.

there can not be universally valid values for the wall thickness the sleeve-like Specify recording parts for apply to every application. The dimensioning of the receiving parts depends on many influences from. Diameter, length and operational load of the erected rod or post-shaped object are also of Meaning like the nature of the soil, in which the object should be used. In addition, also the material of the receiving part and to consider the nature of its manufacture and in this context also the life, the created mast or Pfosten setting is mathematically assumed.

The Reduction in wall thickness must always be seen in comparison to the wall thickness, so far was common in a particular application. Here is the percentage Material savings in the area of large ground dowels or foundations most; because in the usual self-supporting Shooting parts would be the wall thickness in relation to to length and diameter at large Recording parts particularly high. Especially large ground dowels or foundations were so far at all not offered in plastic. With the thin-walled invention and self-supporting recording parts, it is even possible, even size and largest pickup parts Made of plastic economically with sufficient strength and dimensional stability.

The but achievable with the invention advantages do not extend only on the wall thickness, but also on the selection of the material from which the recording parts should exist. In many applications with the inventive foundation system go over to another and cheaper material for the receiving part can as usual was. So can For example, receiving parts made of steel by those made of plastic be replaced or it can less durable plastics are to be considered.

The foundation system according to the invention Therefore, leads to a redesign of the usual receiving parts on the basis of a clear consideration of the actual occurring load operations in each individual case. It is crucial that the fitting core of the insertion tool on the inner contour of the receiving part by form-fit and frictional adjustment largely applied at least over a large part of its length. It thereby supports the wall of the receiving part, so that this during insertion, during which the highest loads occur, retains its shape and can not be bent by excessive stress or is pressed by the environment of the soil, despite its thin-walled training.

Furthermore have to but also the forces and / or moments required for insertion on a large area transfer the receiving part become. Under "possible large area "should in this context be understood that from the fitting core on the receiving part at Introducing applied forces over one preferably size. Length of the receiving part be introduced into this. This is the length of the power flow at initiation The forces exerted by the fitting core on the receiving part forces as low as possible. this in turn allows it, the wall thickness of the receiving part to a technical minimum.

If the receiving part designed as a wrapping sleeve is, it depends, the forces in the longitudinal direction the receiving part and thus also in the longitudinal direction of the later to be introduced rod-shaped To transfer the subject matter. So it comes down to big, among other things as possible large forces receiving transfer surfaces perpendicular to this axis direction.

If formed the receiving part as a screw There must be a significant amount of torque from the insertion tool that relatively weak dimensioned receiving part to be transferred. In this case transfer surfaces are required the approximately tangential to the mentioned axial direction run.

One thin-walled The receiving part is naturally in the area when it is introduced into the ground mechanically loaded most of its penetrating into the ground tip. Therefore, according to one advantageous development that the sleeve-like Receptacle with inserted fitting core together with this one complete dimensionally stable insert body forms, in his facing the ground introduction direction ending in a cone that partially or completely through the sleeve-like Receiving part formed in the insertion direction thorough passport core is. After insertion of the insert body in the ground is the dowel core removed again, leaving only the receiving part for receiving a rod-shaped component remains in the ground.

Of the Passport core located on the lower part of the insertion tool passes through thus the hollow-shaped sleeve-like thin Receiving part until it with the tip of its cone down the receiving part protrudes. At the same time he fills the interior of the receiving part by positive and friction Adaptation largely supports and supports thereby the wall of the receiving part during insertion into the Ground. Above all, it penetrates the pass core and the receiving part insert body with the tip of the pass core ahead in the ground. Because the receiving part usually a mass portion that can only be used once, the insertion tool on the other hand, it can be used again and again, this insertion tool is worth it made of a durable material to train in a high quality way, leaving it with its tip many times as indenters can serve in the ground.

alternative is also an embodiment possible, at the sleeve-like Receiving part in its direction of the ground facing the direction of insertion ending in a cone whose top area is made of a reinforced material consists. For example, the closed tip of the sleeve-like Receiving part made of a different plastic than the rest of the receiving part, or the tip may be reinforced by a fibrous material. Even a metal tip on an otherwise plastic existing receiving part is conceivable. Since the sleeve-like receiving part due its lesser strength overall cheaper in any case is, the associated somewhat more effort is more than justified.

To A further advantageous embodiment provides that the sleeve-like Receiving part at least partially has a cylindrical contour. It has become proved to be advantageous when the inserted state top portion of the receiving sleeve has a cylindrical shape, in the the rod-shaped Part can be used in a form-congruent manner. On the other hand, the lower portion of the receiving part formed predominantly cone-shaped to make it easier to penetrate the ground. Between the tapered lower portion and the cylindrical contour in the upper Area may also be a conical transition area, the serves to further compaction of the soil.

The materials that are suitable for the receiving part and the fitting core of the insertion tool depend on the particular application, wherein in addition to the load of the erected rod-shaped or post-shaped object and the computational life of the attachment must be considered. However, it is preferred that the fitting core of the insertion tool consists of a metallic material, preferably of steel, while for the sleeve-like receiving part in each case a plastic comes into question. Suitable plastics are, for example, polyamides, polypropylenes, polyethylenes and polystyrenes, which in the order listed here generally also mean an increasing service life of the receiving part in the ground.

at a particularly preferred embodiment of the foundation system according to the invention is provided that the sleeve-like Receiving part at its outer periphery at least one Part of its length provided with an external thread is and forms a Eindrehkörper with inserted fitting core with this. The sleeve-like receiving part is in this case as a rotary sleeve or screw foundation formed and is screwed into the ground. The fitting core located on the insertion tool is in this Case in a sense a coupling half that is temporary when introducing with the sleeve-like Receiving part is coupled to a common rotational movement. To the insertion of this clutch must be released again, the fitting core of the insertion tool thus again from the sleeve-like Receiving part are removed, with the receiving part in the ground remains. For this embodiment come the known embodiments of the usual so-called ground dowels in question, as far as they are in accordance with the invention relatively thin-walled sleeve-like Let the parts be realized.

at This latter embodiment is the type of coupling between the fitting core and the inner contour of the sleeve-like receiving part of greater Importance. An advantageous embodiment provides for this, that the form-fitting Adaptation of the fitting core to the inner contour of the sleeve-like receiving part Ribs, which are formed on the inside of the receiving part, in its longitudinal direction run and in adjusted longitudinal grooves of the pass core intervene.

in this connection he fills Passing core on the one hand the entire interior of the sleeve-like receiving part, so that a very massive driving body is created, which is a change in shape of the receiving part during does not permit the screwing process. On the other hand, the receiving part by the mentioned longitudinal ribs and grooves to the reliable Taken rotation. In this type of insertion of the passport core in its longitudinal direction in the sleeve-like receiving part pressed; it comes thus additionally one in the longitudinal direction of the receiving part and later to be used rod-shaped Adding effective acting force, the introduction of the Receiving part in the ground further promotes. The decoupling of passport core and receiving part is done in a simple manner by the picking tool with the dowel core simply pulled back axially from the receiving part becomes.

A another type of coupling between the designed as a rotary sleeve sleeve-like Receiving part and the fitting core can be done by that according to a particularly advantageous embodiment the outer circumference of the sleeve-like Receiving part trained threads to the interior of the receiving part open and form a helical profiling, to an external thread adjusted, the outer circumference the mating core is formed, wherein the engagement and disengagement of Receiving part and fitting core by oppositely directed rotational movements takes place.

at this embodiment make the mating core and the sleeve-like Receiving part a separable threaded coupling. The passport core is with its external thread in the helical profiling screwed into the receiving part until he is full of this profiling abuts and the receiving sleeve to take with it. This type of coupling allows a special favorable Distribution of transmission surfaces during Introducing the required insertion torque. At the same time can the receiving sleeve production technology in cheaper Be carried out with substantially constant wall thickness, even if it is low.

The The latter design is particularly in question when size Pylons or posts are to be set, which heavily loaded in operation are. In this case you will see the cone of the receiving sleeve and of the mating core elongated in relation to the largest diameter so that a particularly slim cone is created. In such slender tapering is the material savings in terms of quantity and quality especially clear.

According to a further embodiment, which relates to an impact sleeve, the sleeve-like receiving part preferably at least at its front part in the direction of insertion on a formed on its inner contour supporting portion. When introducing or turning in the fulcrum sleeve, a corresponding match the inner contour of the receiving part form congruent formed on its outer contour passport core is inserted into the receiving part, and indeed so far until the outer contour of the dowel core fits snugly against the inner contour of the receiving part and one on the bottom (in Insertion direction seen) located counter surface fed on the support section on the inner contour the receiving part is seated. The support portion may also be provided as a continuous or partially formed annular shoulder. The blows for driving or ramming the impact sleeve into the ground are then applied to the mating core or an additionally placed on this element, for example made of wood, wherein the forces are introduced via the annular shoulder and the preferably conical lower portion of the receiving part in the receiving part , so that the receiving part remains as a self-supporting impact sleeve after removing the dowel core in the ground. Such a receiving part may additionally have on its outer side, ie its side facing the ground, in its longitudinal direction extending fin-like webs. These webs serve on the one hand to increase the dimensional stability and improved guidance during insertion and on the other hand to counteract a rotation during alternately turning to the right and to the left of the fitting core to its release after successful introduction.

According to one second aspect of the invention comprises a receiving part for a foundation system to Attach and optionally align a rod-shaped object in the ground on its inner contour over a substantial part his length Positive locking elements, over which on, and relative to the length of the receiving part, short power flow path personnel and / or moments for introducing the receiving part into the ground flat and in particular form-fitting can be introduced, wherein the receiving part is thin-walled and made of plastic is. The advantage of being over a substantial part, if not the entire length of the Receiving part extending positive locking elements consists on the one hand in that to be introduced into the receiving part for the purpose of introduction Forces over one huge Part of the receiving part, and that these positive locking elements to increase the dimensional stability of the receiving part contribute. This allows the receiving part in comparison to conventional ground anchors or impact sleeves considerably thinner walled and yet be made of plastic. It is with it too possible, Shooting parts for especially big Dimensions also made of plastic, which so far exclusively from Steel were made.

Preferably are the wall thickness-length ratios the receiving part according to the invention listed in areas, as they are already related to the complete foundation system have been specified.

The Invention will follow based on embodiments even closer explained. In the figures, the following is shown:

1 shows a longitudinally cut sleeve-like receiving part in the form of a rotary sleeve with inserted fitting core according to a first embodiment of the invention.

2 shows an axial sectional view in the threaded portion of the foundation system according to 1 ,

3 shows that off 1 apparent receiving part without inserted passport core in a spatial view.

4 , shows the to the receiving part according to the 1 to 3 belonging Passkern also in a spatial representation.

5 shows a cut in the longitudinal direction, designed as a rotary sleeve receiving part with inserted fitting part according to another embodiment of the invention.

6 shows an axial sectional view of the receiving part in its threaded portion with inserted fitting core according to 5 ,

7 shows a spatial view of the receiving part according to 5 ,

8th shows the according to the receiving part according to 7 belonging passport core of an insertion tool.

9 shows a longitudinally cut sleeve-like receiving part for insertion with adapted, inserted fitting core according to an embodiment of the invention.

10 shows an axial sectional view in the insertion direction lower portion of receiving part and fitting core according to the embodiment according to 9 ,

11 shows the receiving part according to 1 without inserted passport core in a spatial view.

12 shows the fitting core for the introduced by being hammered into the bottom receiving part according to 9 respectively. 11 ,

In 1 is a longitudinally cut sleeve-like receiving part 1 with a passport core 10 shown belonging to a foundation system according to a first embodiment of the invention and is itself a separate aspect of the invention. The illustrated receiving part 1 has the shape of a slender, elongated cone in most of its length 2 , which at its upper end in a cylindrical contour 3 passes. To the illustrated cylindrical contour 3 joins in upward flared conical receiving area 14 for a rod or post-shaped object to be used, which is preferably embedded in a filling material there. Details of this type of fastening are in the DE 199 608 54 A1 and therefore omitted here for greater clarity. The cone 2 of the receiving part 1 is outside of an external thread 4 surround. This forms a tapered thread and serves to screw the receiving part into the ground. In the illustrated embodiment, the sleeve-like receiving part 1 in its top area 5 closed. However, the training can also be made so that the top area 5 omitted, the receiving part 1 Thus, at its lower end is open and of the passport core to be used 10 of the insertion tool is penetrated. In this case, the sleeve-like receiving part penetrates 1 with the tip of the passport core 10 advance into the ground.

2 it can be seen that on the inner wall of the receiving part 1 four ribs 7 are formed, which extend substantially over the entire length of the cone 2 extend and even in the cylindrical contour 3 extend. The location of the ribs 7 corresponds to the grooves in the pass core 10 (please refer 1 ). The number of ribs may also be different, with naturally a larger number of ribs in the receiving part 1 and grooves in the pass core 10 leads to a particularly uniform torque transmission and increases the force or momentary transmission area.

3 shows a recording part 1 according to 1 in perspective view. The recording part 1 has a tapered section 2 on which an external thread 4 attached, which is essentially from the top 5 to . to the cylindrical section 3 is sufficient, at which a likewise conical receiving area 14 followed. The thus formed receiving part thus has the complete shape and shape of a known screw foundation, however, despite guaranteed strength and dimensional stability (self-supporting) has a very thin wall and is made entirely of plastic. The plastic design also has the advantage that, apart from the reduced use of material through the thin walls, the external thread is completely mitangießbar without that - as in the production of a steel screw foundation - a separate welding process is required. With the arrow 15 between 3 and 4 is hinted that the pass core 10 ( 4 ) in the receiving part 1 is inserted, wherein the outer contour of the mating core 10 conforming to the inner contour of the receiving part 1 is designed so that after successful insertion of the passport core 10 into the interior of the receiving part 1 a complete insert body is formed in the form of a driving body.

4 shows the pass core 10 who is in the 1 to 3 illustrated sleeve-like receiving part 1 belongs. In 4 are longitudinal grooves 11 recognizable in the conical body of the passport core 10 are incorporated and extend into its upper cylindrical portion. The pass core 10 is located at a usual, in 4 not shown further insertion tool that may be customary. In the simplest case it consists of a rotary key 13 which is to be operated by hand. But it may also be a motor-driven Eindrehvorrichtung which is placed on a support frame on the placement point for the rod-shaped object (not shown).

For inserting the receiving part 1 into the ground is the insertion tool with the fitting core 10 in the interior 6 of the receiving part 1 introduced (see arrow 15 ), the longitudinal grooves 11 of the passport core 10 on the ribs 7 of the receiving part 1 must be set up. When pressure down fills the passport core 10 the interior of the receiving part completely and is thus completely on the inner contour, so that the thin-walled running receiving part is fully supported for the driving operation and by long positive locking elements 7 . 11 short traction paths are available. receiving part 1 and passport core 10 together form the solid drive body, which does not allow deformation or damage to the outside receiving part.

About the ribs 7 and the longitudinal grooves 11 , Which extend over a substantial part of the length of the drive body, in addition, the torque of the insertion tool is reliably transferred to the receiving part surface, so that it is screwed into the ground.

At the end of the screwing only needs the insertion tool with the fitting core axially upwards from the interior 6 of the receiving part 1 to be pulled out; the receiving part 1 remains as a self-supporting screw foundation in the ground.

A modified embodiment is in the 5 to 8th shown. As far as parts have remained unchanged compared to the first embodiment, this will be the same reference numerals as in the 1 to 4 used.

Different from the first embodiment is the execution of the external thread 4 on the receiving part 1 , The threads of the external thread are to the interior 6 of the receiving part 1 open. They thus form a helical profiling 9 in the inner contour of the receiving part 1 , In the 5 and 6 is this helical profiling 9 especially good to recognize NEN.

The pass core 12 this embodiment is in 8th shown and contains an external thread 8th , That at the pass core 12 located external thread 8th and the helical profiling 9 inside of the receiving part 1 Together form as a positive locking elements, the halves of a matching conical threaded coupling.

For inserting the receiving part 1 into the ground becomes the pass core 12 of the insertion tool in the interior 6 of the receiving part 1 introduced until the threads of the at the mating core 12 located external thread 8th in the helical profiling 9 of the receiving part 1 intervention. By further turning the cone screw is pressed into each other, until the flanks of the external thread 8th a torque transmitting relatively large contact surface with the helical profiling 9 of the receiving part 1 Make and take this rotating.

Here, too, fills the pass core 12 reliable the interior 6 of the receiving part 1 from, whereby this is reliably supported during insertion. At the same time, the torque for introducing the receiving part 1 transferred to the ground over a large area and thus safe.

At the end of the insertion process must first be located on the insertion tool fitting core 12 turned back a bit and then from the interior 6 of the receiving part 1 be pulled out.

In the 9 to 12 another embodiment is shown.

In 9 is a complete insert body with receiving part 1 and passport core 16 shown in spatial view, with the receiving part 1 is cut in the longitudinal direction. The recording part 1 has a tapered area 2 as well as a cylindrical area 3 in and is formed in its inner contour so that the inner contour completely on the outer contour of the fitting core 16 snugly. The recording part 1 is used as a complete insert body together with the fitting core 16 hammered into the ground, with the pass core 16 subsequently removed. The recording part 1 remains in the ground and picks up a aufzustellendes and previously aligned rod-shaped component. The latter can also be cast in the receiving part, held by means of a filling or an eccentric insert part. So that the impact forces, which on the pass core 16 be applied, reliably and substantially over a relatively large area in the receiving part 1 can be initiated, the receiving part 1 but still very thin-walled and thus can be designed to save material, is on the inner contour of the receiving part 1 an annular shoulder 17 (please refer 10 ) formed on which a correspondingly at the passport core 16 Formkongruent trained annular shoulder with completely inserted Passkern 16 supports itself. About this form-fit as well as the positive connection and frictional engagement in the conical area 2 between the pass core 16 and the receiving part 1 The impact forces are distributed on the receiving part so that the length of the power flow at the introduction of the forces is minimized. The Einbringkräfte so on the one hand on the annular shoulder 17 and on the other hand, the effective area (projection area in the axial direction) of the tapered area 2 brought in. The larger the conical region, that is, the greater the difference between its smallest and its largest diameter, the stronger the displacement effect of the fastening system according to the invention, the more uniform, but also the Einbringkräfte on the receiving part 1 be transmitted.

In 11 is the recording part 1 with its interior 6 shown in perspective.

12 also shows a perspective view of the associated passport core 16 , where by the arrow 15 implied that the pass core 16 in the interior 6 of the receiving part 1 is used so that when fully inserted a situation is reached, as in 9 is shown.

According to one embodiment has a plastic receiving part has a length of about 450 mm and a Wall thickness of a maximum of about 2 mm, whereby as plastic polypropylene (PP) is used.

1

sleeve-like receiving part

2

cone

3

cylindrical contour

4

external thread on the receiving part

5

tip area

6

inner space

7

Ribs ( 1 to 3 )

8th

External thread on the dowel core 12 ( 5 . 6 and 8th )

9

helical profiling inside the receiving part

10

Passport core ( 4 )

11

longitudinal groove

12

Passport core ( 8th )

13

rotation key

14

conical reception area

15

insertion of the mating core in the receiving part

16

Passport core ( 12 )

17

annular shoulder

Claims (12)

Foundation system for aligning and fixing a rod-shaped or post-shaped object in the ground, with a self-supporting sleeve-like receiving part to be introduced into the ground ( 1 ), which receives an end region of the rod-shaped or post-shaped article in the fastening state, and with an insertion tool which, when the receiving part is introduced (FIG. 1 ) is in contact with it, characterized in that the insertion tool has a dimensionally stable fitting core ( 10 . 12 . 16 ), which on the inner contour of the receiving part ( 1 ) largely abuts and this supports, and by at least partially positive fit in the sense of introducing the forces required for the introduction of forces and / or moments surface on the receiving part ( 1 ) transmits short Kraftflussweg relative to its length, wherein the receiving part ( 1 ) is thin-walled and made of plastic. Foundation system according to claim 1, characterized in that the sleeve-like receiving part ( 1 ) in its direction of the ground facing in a cone ( 2 ) whose tip area ( 5 ) is reinforced. Foundation system according to claim 1 or 2, characterized in that the sleeve-like receiving part ( 1 ) at least partially a cylindrical contour ( 3 ) Has. Foundation system according to one of the preceding claims, characterized in that the fitting core ( 10 . 12 . 16 ) of the insertion tool made of a metallic material, in particular steel. Foundation system according to one of claims 1 to 4, characterized in that the sleeve-like receiving part ( 1 ) with inserted Passkern ( 10 . 12 . 16 ) forms together with this one Einsetzkörper, which in its direction of the ground facing the direction of insertion in a cone ( 2 ), which partially or completely through the sleeve-like receiving part ( 1 ) in the direction of insertion penetrating pass core ( 10 . 12 . 16 ) is formed. Foundation system according to one of the preceding claims, characterized in that the sleeve-like receiving part ( 1 ) at its outer periphery at least over part of its length with an external thread ( 4 ) is provided and with inserted Passkern ( 10 . 12 ) forms together with this a Eindrehkörper. Foundation system according to claim 6, characterized in that the form-fitting adaptation of the passport core ( 10 ) to the inner contour of the sleeve-like receiving part ( 1 ) by ripping ( 7 ), which on the inside of the receiving part ( 1 ) are formed, extend in the longitudinal direction and in adapted longitudinal grooves ( 11 ) of the pass core ( 10 ) intervene. Foundation system according to claim 6, characterized in that on the outer circumference of the sleeve-like receiving part ( 1 ) formed external thread ( 4 ) Has webs, which to the interior of the receiving part ( 1 ) and a helical profiling ( 9 ), which are connected to an external thread ( 8th ), which is at the outer periphery of the passport core ( 12 ), wherein the engagement and disengagement of receiving part ( 1 ) and passport core ( 12 ) takes place by oppositely directed rotational movements. Foundation system according to one of claims 1 to 4, characterized in that the sleeve-like receiving part ( 1 ) at least at its front part in the insertion direction a formed on its inner contour supporting portion ( 17 ), in particular an annular shoulder, on which is supported when introducing the dowel core. Foundation system according to one of claims 1 to 9, characterized in that the receiving part ( 1 ) has a wall thickness-length ratio of 8: 1000 to 1: 1000, in particular 7: 1000 to 1: 1000, in particular 5: 1000 to 1: 000, in particular 4: 1000 to 2: 1000. Receiving part ( 1 ) for a foundation system, in particular with the features according to claims 1 to 10, for attaching and optionally aligning a pole-shaped object in the ground, which on its inner contour over a substantial part of its length positive locking elements ( 7 . 9 . 17 ), over which, with respect to the length of the receiving part, short power flow path Einbringkräfte and / or torques can be introduced surface, and is thin-walled and made of plastic. Receiving part according to claim 11, characterized in that its wall thickness-length ratio 8: 1000 to 1: 1000, in particular 7: 1000 to 1: 1000, in particular 5: 1000 to 1: 000, in particular 4: 1000 to 1: 1000 or in particular 4: 1000 to 2: 1000.