This invention relates to a method to achieve anchoring into a basis, such as ground or another foundation and making use of an anchoring device, whereby the anchoring device consists of or comprises a tube or similar. The tube has a second end portion and a second end edge. The method relates also to anchoring for objects in a basis or similar. Thus, objects can be provided with an anchoring device or objects can be arranged to an anchoring device which is going to be anchored or has been anchored into a basis or similar.

There is a need of a ne method to achieve anchoring into a basis and which method can be carried out in a simpler way but with full or improved anchoring or attachment into the basis and with stability against lateral forces. Another need is that anchoring should be able to be carried out with siπple means or tools and preferably without any need of pre-preparat ion of the basis, in which anchoring will be done, as such an action of preparation in advance as taken up a prebored hole into the basis for the anchoring device. Within, for example, building and construction industrie there are coππ nly to carry out anchoring into i.a. ground.

There are many different methods to achieve anchoring in a basis, such as only to introduce or enter an object into a basis, as a pole, post or the like with or without to take up a previous hole in the basis, to dig a pit in the basis, into which an anchoring of often concrete is casted or a prefabricated concrete plinth is entered or another anchoring device, as the nowadays in certain extent used prefabricated anchoring devices of metal, which are brought to expand underneath or behind the surface of the basis. In such previous known anchoring methods anchoring can be achieved either in a simple way but then with a poor anchoring or in a proportion¬ ately complicated way and exacting in work and time but attaining a better anchoring and/or using expensive anchoring devices, which for anchoring require special and expensive tools.

An object of the method according to the present invention is to achieve an anchoring into a basis with an anchoring device, which anchoring can replace the prior methods and involves a simple method of anchoring resul-

ting in an improved anchoring into bases. Another object of the method is that anchoring should be able to be carried out with simple means and taken up short time. An additional object is that utilization of the method should be able to be carried out without any preparation of holes or the like in the basis in advance or any other preparation or substant¬ ially with only insignificant preparation, as taken away objects, as stones, etc., located on the basis.

By using a method according to the invention the requirements made can be fulfilled simultaneously as the inconveniences with the known methods are eliminated _* Thus, anchoring can be carried out in a simple and rapid way with a stable anchoring against lateral strains and at the same time with an improved anchoring and stability against upwards and downwards active forces and strains or vertical, in all directions, active forces and strains. Anchoring can be carried out with simple and previous known and substantially current existing means and without preparation of the basis. For carrying out the method requires anchoring devices, which can be of simple kind, be produced at a trifling cost and be of weatherproof material and a material resistant against unsatisfactory influence of the ground. The method in accordance with the invention is characterized in that the wall of the tube is provided, is shaped or will be provided with a profiling in the shape of inward bends, grooves or similar to form fins, folds or similar in at least a part of its extension in the axial extens¬ ion or longitudinal direction of the device or tube. Such a tube is intro- duced into the basis and in that respect at least to some extent, whereby the basis is penetrated into the tube. In applicable cases can the basis within the tube or inside the tube then be compressed or packed by means of a compressing or packing device, which is inserted in the tube.

According to one embodiment of the method in accordance with the invention the wall of the tube is broken through or parts of its material is removed to form one or more breaks, slits or similar shown by the tube or its wall or openings, recesses or similar and/or edges or is provided with such breaks or similar, openings or similar and/or edges, whereby such a tube is introduced into the basis to at least such a depth that the breaks or similar, the openings or similar, the edges and/or the fins or similar will be situated below the surface of the basis.

The invention also relates to a device for carrying out the method or an anchoring in a method in accordance with the invention, whereby the device is meant for to form an anchoring into a basis or an anchoring for objects in a basis, as ground or another foundation where the device can be introduced. At this, the device consists of or comprises a tube or a blank shaped to a tube and shows a first or lower end portion with a first or lower end edge and a second or upper end portion with a second or upper edge. The said first and second end portions or end edges are combined with each other with at least a wall or wall portions, tube-wall,. tube-walls or similar. The device is characterized in that the said wall or similar shows one or more breaks, slits or similar or openings, recesses or similar or edges or limitation edges and/or a profiling in the shape of inward bends, grooves or similar to form fins, folds or similar in at least a part of its extension in the axial extension or longitudinal direction of the device or tube and that the second end portion and/or the second end edge shows such a shaping that, in applic¬ able cases, a compressing or packing device, such as a ramming tool or the like, can be inserted in the tube.

In one embodiment of the device in accordance with the invention the said breaks or similar, openings or similar and/or the said edges are arranged to extend from one or more sections of the tube or wall and are arranged to extend, at least to some extent or to a considerable extent in the axial extension or longitudinal direction of the tube, preferably in a divergent extention or direction of the axis or said axial extension of the tube.

According to another embodiment of the device in accordance with the invention the device or tube shows an interior in the shape of an open channel or another communication which is free from obstructing elements between at least one end of the tube and the or the said breaks, openings or similar.

In yet another embodiment of the device in accordance with the invention the device or tube is arranged to be able to expand when it is driven into a basis, for example ground, or expand at least in such parts, in which the basis exists inside the device or tube, and, in applicable

cases, be able to be brought to further expansion by compressing the basis in the device or tube.

When the device or tube is driven into the basis, as ground, the basis, which penetrates into the device or tube, will bring the device or tube to a certain expansion simultaneously as the basis within the device or tube is compressed. The expansion of the device or tube causes a compres¬ sing of the basis or ground surrounding the device or tube. In anchoring shall existing openings or similar in the device or tube be located below the surface of the basis. Some of the basis or ground, which penetrates inside the device or tube, will be pressed out through the openings or similar and in the shape of compressed basis when the device or tube is driven into the basis.

According to an additional embodiment of the device in accordance with the ^' invention the device or tube shows one or more breaks, openings or similar and in the axial extension or longitudinal direction of the device or tube folds in the tube-wall.

By the presence of the folds or similar an expansion of the device or tube can be effected or be facilitated by means of the basis, which penetrates into the tube. By the presence of the breaks, openings or similar there are edges in the device or tube-wall, which edges are stabilizing for the device or tube in anchoring and prevent or stop the device or tube to be displaced upwards or downwards after the anchoring of the device. The effect of the edges can be considered to be fortified by the fact that compressed basis is brought to be discharged through the breaks, openings or the like, which are defined of the said edges, whereby the basis adjacent the edges show an improved firmness or hard- ness against strains besides the existing compressing around the device or tube existing by the -fact that the device or tube compresses the basis surrounding the device. Besides an improved stability for the device or tube against lateral forces because of the compressing of the basis around the device or tube it is also attained a further improved transverse stability of the device according to the invention by the presence of the said folds or similar, which in this respect will work as transverse stabilizing wings or similar.

In one more additional embodiment of the device in accordance with the invention wings are arranged to protrude from the outside of the device or tube and in that respect at least at or along or preferably at or along the upper end portion of the device or tube.

In still another embodiment of the device in accordance with the invent¬ ion the device or tube is meant to be arranged with one end on a lower level than the other end and that the device or tube is provided with a number of holes extending through the tube-wall.

According to yet one more embodiment of the device in accordance with the invention at least a part of that material, which is limited by the said breaks, is arranged to be brought to project some and forms a fluke or the like when the basis inside the tube is compressed, whereby, when strains on the device or tube arise which strains are in the opposite direction of the direction of introduction of the device or tube into the basis, said material in the tube-wall is brought to expand or be flared into the basis around the tube and obstructing a displacement of the device or tube opposite its direction of introduction into the basis.

It should also be stated that the device in accordance with the invention can form a part of an object or a device which will be anchored into a basis or actually is an anchoring device which will be anchored into the basis and to which objects are arranged and which objects will be ancho- red into a basis.

In still one more additional embodiment of the device in accordance with the invention the said fins, folds or similar are arranged along only a part of the length of the device or tube or along the full-length of the device or tube.

According to one further embodiment the said breaks, openings or similar are arranged in the wall of the device or tube and at one end portion of the device or tube or first or lower end portion and, in applicable case wings are arranged at the other end portion of the device or tube or second or upper end portion.

In another further embodiment of the device in accordance with the invent¬ ion an expansion element is comprised in the device which expansion ele¬ ment is arranged to be able to be supplied inside the device or tube and in there arranged to be able to expand against the interior walls of the device or tube and bring at least parts of the inward-bent or folded port¬ ions of the wall of the device or tube to return at least to at least tube-shape or to its original position in the tube, i.e. to effect at least a smooth out of the inward bendings or folds.

Further characteristics of, and advantages with the method and device in accordance with the invention will in the following description of the invention be apparent by embodiment examples, whereby a simultaneous reference will be made to the accompanying schematic drawings, of which Fig. 1 shows from one side a first embodiment of an anchoring device, Fig. 2 shows from one side another embodiment of an anchoring device. Fig. 3 shows from one side a third embodiment of an anchoring device. Fig. 4 shows from above the anchoring device shown in Fig. 3, Fig. 5 shows in a perspective view a fourth embodiment of an anchoring device, Fig. 6 shows in a perspective view from below a fifth embodiment of an anchoring device, Fig. 7 shows in a perspective view from above an anchor¬ ing device substantially of that kind which is shown in Fig. 6, Figs. 8 - 10 shows from one side a sixth embodiment of an anchoring device in three positions, Fig. 11 shows from above an anchoring device or a seventh embodiment of an anchoring device. Fig. 12 shows a cross-sectional view through a basis in which an anchoring device according to the invention is arranged, Fig. 13 shows in a perspective view from above an exempli¬ fied anchoring device as prior and a part of a compressing or packing device brought up to the anchoring device. Fig. 14 shows from one side an eighth embodiment of an anchoring device in accordance with the invention, Fig. 15 shows from above the anchoring device according to Fig. 14, Fig. 16 shows from one side a ninth embodiment of an anchoring device. Fig. 17 shows from above the anchoring device according to Fig. 16, Fig. 18 shows from one side a tenth embodiment of an anchoring device and Fig. 19 shows from above the anchoring device shown in Fig. 18.

The reference designation 1 in the figures shows a device in accordance with the invention and which device consists of or comprises a tube 2, a tube-like body or similar with a wall 3 or wall portions, a tube-wall.

tube-walls or similar and with an interior 4 in the shape of an open channel, hole or similar of the length or length extension of the device 1, tube 2 or similar. Even if the device 1, tube 2 or similar can show substantially the same shaping in its length extension or end portions, which are similar to each other or formed with uniform shape, the one or first or lower end or end edge of the device 1, tube 2 or similar has been designated 5 in the figures showing the embodiment examples and the other or upper end or end edge has been designated 6 and in a corresponding way has its lower end portion been designated 25 and its upper end portion 26.

The tube 2 or similar can consists of a tubing with circular or oval cross-section, as it is shown for the anchoring device 1 in Fig. 1, a square-shaped tube with for example square or rectangular section, as it is shown for the anchoring device in Fig. 2, with principally circular cross-section, as it is shown for the anchoring device in Fig. 3 and 4, with principally square cross-section, as it is shown for the anchoring device in Fig. 5, etc., or consists of a material or blank in shape of sheet-metal or a band, which is brought to a shape of a tube or similar.

Thus, the device 1 can be shaped from a tube, as an all-drawn tube, all- welded tube or the like or from a blank, as a strip of sheet-metal, which is upset or folded to a tube or is roll-formed in several tools into tube-shape or similar and is welded, folded or similar to a seam. Such a tube can later be cut in an adapted or suitable length for a device 1 or tube 2. The material of the device 1 or tube 2 can prefera¬ bly consists of a material, which is resistant to affects from the basis and/or the environment surrounding the device 1, and such a material can be a stainless material, a material all coated with zine, etc., as a stainless, galvanized, coated with zine or similar blank of sheet-metal or band or a tube. An advantage with the device 1 according to the inven tion is that the device or the said tube 2 can be shaped of, for example a stainless material, etc.

Each of the devices 1 according to the embodiments in Fig. 1 and 2 forms a tube 2, which in its lower end portion 25 has been provided or shaped with breaks 9 in the material of the tube-wall 3, slits or similar in order to effect edges 15, 16 in the tube 2 or tube-wall 3. In an embodi-

ment the broken through material in the tube 2 or tube-wall 3 is removed to form in the device 1, tube 2 or tube-wall 3 besides the said edges 15, 16 one or more openings 10, recesses or similar. According to the embodi¬ ments shown there exist in each device 1 or tube 2 two openings 10, recesses or similar but with advantage can more such breaks 9 of the material and/or openings 10 in the tube-wall 3 be arranged, for example four, as it is shown in, for example, the device 1 in Fig. 5. The devices 1 shown in Figs. 1 and 2 can be considered to include one principal form of a shaping of a device 1 according to the invention to be used in a method in accordance with the invention.

Anotherταrincipal form of a shaping of a device 1 according to the inven¬ tion to be used in a method in accordance with the invention is shown in Figs. 3 and 4. Thus, the device 1 is formed of a tube 2 which in its length extension is provided or shaped with a profiling in the shape of one or more inward bendings 7, grooves or similar in the tube-wall 3 so that the device 1, tube 2 or tube-wall 3 shows one or more radially directed fins 8, folds or similar of the device 1 or tube 2 and extending in the axial direction of the device 1 or tube 2 or in parallelly or sub- stantially parallelly extensions or directions with the axis of the device 1 or tube 2. Such inward bendings 7 or similar forming fins 8 or similar consist of preferably least two or, for example, four, as it is shown, for example, for the device 1 in Fig. 5, or of more, for example, six or eight, as it is shown in the present embodiment example. Such inward bendings 7 or similar and/or fins 8 or similar does not need to exist along the entire lenght extension of the device 1 or tube 2 but in shaping of the device 1 or tube 2 from a tube it can be simplest and/or less expensive from a manufacture or production point of view to provide or shape the inward bendings 7 and/or the fins 8 along the full length extension of the device 1 or tube 2, as well as in shaping of the device 1 or tube 2 by roll-forming or similar, when the inward bendings 7 and/or fins 8 can be effected and shaped in connection with the very production of the device 1 or tube 2. Further, the inward bendings 7 and/or fins 8 present other advantages and can render the device 1 or tube 2 itself an improved stability, elastic qualities and a function of an expander. The inward bendings 7 and/or fins 8 give a stabilizing effect, especially against lateral strains, when the device 1 or tube 2 is arranged into ground. Further, the elastic properties can or will be utilized to attain

tensioning effects or an improved tensioning effectiveness against the ground or basis surrounding the device 1 or tube 2. Corresponding devices or tubes into the ground, which lack such said inward bendings and/or fins or folding of the tube, can in ground frost be burst, which risk does not exist when using the present device 1 or tube 2, which is elastic and stretchable by the foldings.

A third principal form of a shaping of a device according to the invent¬ ion to be used in a method in accordance with the invention is shown in, for example, Fig. 5. Thus, the device 1 consists of a tube 2, which orig¬ inally can consist of a square-shaped tube, which is provided with the inward bendings 7 in the tube-wall 3 by, for example, rolling, whereby elastic properties and possibility for expansion are attained in the device 1 or tube 2 at the same time as some kind of fins 8 or the like is obtained. The device 1 or tube 2 shaped with inward bendings 7 and/or fins 8 shows also breaks 9 in the material in the tube-wall 3 or removed or missing portions to form openings 10 or similar and/or edges 15, 16. Thus, the present device 1 or tube 2 shows the shown and described devices or shapings of the device 1 or tube 2 according to the said first form, which is shown in Figs. 1 and 2, as well as the shown and described devices and shapings of the device 1 and tube 2 according to the said second form, which is shown in Figs. 3 and 4.

In for example the driving down action of a device 1 or tube 2 into a basis or ground according to the shown and described embodiments of the device or tube, the basis or ground will penetrate into the inside 4 of the tube 2 through the lower located, open end 27. Often or normally happens at this a compressing of the basis or ground within the tube 2 and the basis or ground presses from the inside 4 of the tube 2 against the tube-wall 3 or tube-walls, whereby an expansion of the device 1 or tube 2 is obtained. The construction is such that it is easier or meets less resistance to press out the tube-wall 3 instead of pressing the tube-wall 3 in or in the direction of the axis of the device 1 or tube 2. Accordingly, by the shaping of the device 1 or tube 2 an expansion of the device 1 or tube 2 is produced in the driving down action into, for example, ground. Even if this expansion is small, such as less than even 1 mm, so results the expansion in a simultaneously compressing of the ground surrounding the tube 2, which promotes a more improved anchoring

of the device 1 or tube 2 into the basis or ground. According to an embodiment of the device in accordance with the invention the device is arranged in such a way, that the device 1 shall be driven down into ground to at least such a depth, that the openings 10 or similar will be situated below the surface of the ground. The ground, which at this penetrates into the inside 4 of the tube 2, will to some extent be pressed out through the openings 10 and even more ensure the anchoring of the device 1 or tube 2 into the basis or ground.

The same thing is valid for the embodiment of the anchoring device 1, which is evident from Figs. 8 - 10, and which anchoring device can be considered to form a fourth principal form of a shaping of a device according to the invention. In this embodiment exists breaks 9 or simi¬ lar in the material in the tube-wall 3 but the material is not removed but may remain to form fluke-shaped elements 30, which can be brought to expand or be flared some to form barbs or the like. Further, there is a folding along at least a part of the extension of the tube 2.

In certain cases it should be avoided shaping the folding of the tube too sharp, i.a. depending on way of manufacture of the device 1 or tube 2. Thus, the devices 1 or tubes 2 show in the embodiments, which are evident from Figs. 6, 7 and 11, fins 8 or similar, the apex of which, i.e. the edge 18 extending in the axial direction of the device or tube and located farthest away from the axis of the device 1 or tube 2, is shaped more rounded or with a certain radius. The devices 1 or tubes 2 in the embodiments shown in Figs. 6 - 11 can originally consist of tubes with circular section or preferably with square section or be shaped from sheet or band-shaped blanks by, for example, roll-forming and show for the rest in the main an equivalent shaping, however, there are differences in choice of material, width, length and the rest of dimen¬ sioning.

Existing breaks 9 or similar, openings 10 or similar and/or the edges 15, 16 are arranged in the said fins 8 or similar, as well as the in Figs. 2 and 5 shown eπ-bodiments of the device 1 or tube 2. Further, the said breaks 9, openings 10 and/or edges 15, 16 are preferably arranged with at least a part or an end part in the said edge 18 in the fins 8 and arranged to extend from one or more parts of the tube 2 or wall 3.

Further, they are arranged with such limitation edges 15, 16 that they at least to some extent or to considerable extent are extending in the tube 2, tube-wall 3 or in a plane in the axial extension or longitudinal direction of the tube 2, which deviates from the axis of the tube 2 or said axial extension or longitudinal direction. Thus, it is evident from the embodiment examples, that the limitation edges 15, 16 extend in planes in the fins 8, which deviate from the axis or axial extension of the tube 2, as well as the said edges 15, 16, which exist in two parts or the like in the devices 1 according to the embodiment examples. Thus, a first part 15 and a second part 16 of the edges 15, 16 extend from the said longitudinal edge 18 of the tube 2 and each in two from each other diverging parts towards the tube 2 or the axis of the tube 2, still following the material in the tube-wall 3 or the fins 8, whereby the first part or edge 15 extends substantially in the axial extension or longitudinal direction of the tube 2, while the second part or edge 16 extends substantially in the radial direction of the tube 2 or in planes across or perpendicular to the axis of the tube 2, see the embodi¬ ments in Figs. 1, 2, 5 - 7 but also, for' example, in Figs. 12 - 18. In the embodiments, which are shown in Figs. 6 and 7, the second part 16 extends in a plane, which is some at an angle to a plane perpendicular to the axis of the tube 2 or some inclined in its extension towards the tube 2 and in direction towards the lower end edge 5 of the tube 2 respec tively in direction towards the upper end edge 6 of the tube 2, i.e. some inclined towards the tube 2. Thus, the diverging parts of the first edge 15 form two edges 15 in the device 1 or tube 2, which are directed down¬ wards, while the diverging parts of the second edge 16 form two edges 16 in the device or tube, which are directed upwards. Thus, when it exists, for example, four arranged openings 10 or similar in the tube 2, it is produced in the device 1 or tube 2 eight edges 15 directed downwards and eight edges 16 directed upwards besides the existing lower end edge 5 respectively upper end edge 6 at the ends of the tube 2.

In the embodiment according to Figs. 8 - 10 it is also formed such edges 15 of the breaks 9 or similar but according to an embodiment it also exists a break in the longitudinal edge 18 of the fins 8, i.e. said break extends in an axial direction of the tube 2.

As it prior has been evident or indicated the device 1 or tube 2 can con¬ cern an anchoring device in a basis 11, as ground or another foundation, see Fig. 12, whereby the device 1 or tube 2 at least partly is introduced or driven down into the basis 11. The introduction or entering into the basis 11 can be done by driving in or down by means of a tool, as a pres¬ sing tool, a hydraulic haim-ering machine or the like.

It has been proved in tests that anchoring devices 1 of the kind, which have been evident from Figs. 3 and 4, in which a certain expansion of the device 1 or tube 2 or its walls 3 was effected, i.e. that at least a part of the device or tube was brought to a certain smooth out of the foldings, whereby also a further condensation or packing of the ground around the device 1 or tube 2 was obtained, and furthermore that the resistance of the device 1 or tube 2 against further penetration into the ground 11 was satisfactory in different kind of grounds and soil conditions, while the anchoring against forces directed upwards in certain cases was deficient. When anchoring devices 1 of the kind, which have been evident from, for example, Figs. 1 and 2, was used in the same ground, the resistance against displacement upwards of the devices 1 or tubes 2 was improved when forces directed upwards occurred, which improvement was dependent on the existence of i.a. the other, upwards directed edges 16 but also of the masses pressed out through the openings 10. Furthermore, the resist¬ ance was improved against further displacement downwards into the ground 11 by i.a. the first edges 15, which are directed downwards. Further improved anchorings was received by the anchoring devices 1 of the kind, which have been evident from, for example. Figs. 6 and 7, when, besides the masses forced out through the openings 10 and the existence of the downwards and upwards directed first and second edges 15, 16, it also was obtained an expansion of the tube 2 and condensation and packing of the existence ground 11 surrounding the device 1 or tube 2. It was able in this case to measure as much as right to 75 % improvement of the resist¬ ance against pulling upwards of the device or tube, i.e. in attempts to draw up again the tube once driven down into the ground and this compared with devices 1 or tubes 2 of the kind, which are evident from Figs. 3, and certain soil conditions, as porous and light basis. The tests gave surprising and considerably better anchoring results than what could be expected. More better results and improvements, in certain cases and in certain soil conditions more than the double, was received in yet an

embodiment of the device, which will be evident below in connection with the description of a method with reference to Figs. 12 and 13. Still more improved results was received in this respect in a device according to Figs. 8 - 10.

Thus, the invention relates also to a method to achieve anchoring into a basis 11 or an anchoring for objects in a basis and using an anchoring device 1, i.e. a device 1 or a tube 2 according to the invention as it has been previously described or will be evident below. Thus, a device 1 or a tube 2 according to the invention is arranged in a basis 11, which preferably is of such a kind that the device 1 or tube 2 can be driven into or down into the basis 11 by means of for example a tool. In applic¬ able cases, can, dependence on certain basis or for example certain ground conditions, at least parts of the basis 11, where anchoring will be done, be prepared, divided, removed, partly removed, taken up hole, bored or the like even if the device according to the invention is arranged in such a way that it can form or be arranged as an anchorage in a basis 11 without in advance arranged, bored or the like prepared hole. The device 1 or tube 2, which is the designation term for the device according to the invention which principally will be used in the following description of the invention, is meant to be arranged with mainly its entire length in the basis 11, as it is evident from Fig. 12. Thus, the tube 2 has been arranged in a basis 11 in the shape of ground so that the upper end edge 6 of the tube 2 is situated in the surface 12 of the basis 11 or in the ground-surface 12.

A tube 2 has according to the invention been shaped with or in the wall 3 of the tube 2 been provided or arranged with breaks 9, slits or simi¬ lar by the fact that parts of the wall 3 have been broken through or been shaped with breaks, openings 10, recesses or similar by the fact that parts of the wall 3 of the tube 2 have been removed or been shaped with missing portions, edges 15, 16 and/or that the wall 3 of the tube 2 have been shaped or provided with inward bendings 7, grooves or similar to form fins 8, folds or a folding or similar. The breaks 9 or similar, the openings 10 or similar and/or the edges 15, 16 exist in one or more parts of the extension of the tube 2 and according to an embodiment at a distance from the end edges 5, 6 of the tube 2, while the inward bend¬ ings 7 or similar and/or the fins 8 or similar, i.e. the folding, exist

in a part of the extension of the tube 2 or as previously have been said along its entire extension, i.e. between the end edges 5, 6 of the tube 2.

The device 1 or tube 2 is introduced into or down into the basis 11 to at least such a depth or to intended depth so that at least a part of the of the tube 2 shown breaks 9, these parts of the tube with removed portions of material, the openings 10 or similar, the said edges 15, 16 and/or at least a part of the fins 8 or similar, if such exist in the device 1, will be situated below or inside the surface 12 of the basis 11. According to an embodiment of the method in accordance with the invention the tube 2 is arranged into the basis 11 in such a way that its second end portion 26 or end edge 6 will be situated principally in the surface 12 of the basis 11 or with a second end edge 6 situated some above or outside the surface 12 of the basis 11, whereby objects can be attached to that part of the tube 2, which is situated above or outside the surface 12. According to another embodiment of the method in accord¬ ance with the invention the tube 2 is driven into or down into the basis 11 so that its second end portion 26 will be situated mainly in the sur- face 12 of the basis 11 or with a second end edge 6 situated some below or inside the surface 12 of the basis 11. After that a compressing or packing device 20 is inserted into the interior 4 of the tube 2 and com¬ presses, packs or similar the basis 11 located within the tube 2 to form a rcom 14 in the tube 2. Objects can be brought into that room 14 for anchorage by means of an anchoring means, as concrete.

The compressing device 20 shows a first section 21 showing a dimension or a cross-section substantially corresponding with the inner diameter or cross-section of the tube 2, a second section 22, which is meant to be influenced for the compressing action and an intermediate section 23 between the first and second sections 21, 22. The arrow 24 shows the direction of introduction of the compressing device 20 for compressing of the basis 11 within the tube 2. The room 14 in the tube 2, which is effected by the compressing action, ought to in any case be filled up with a filling material, however not with such filling materials as gravel and sand.

An anchoring device 1 can be produced by the fact that one starts from a tube, for example a sqare-shaped tube in the standard assortment, which in a long length is supplied to a plant where the tube is cut off in intended lengths, as 400 ITΠ. - 2000 mm. After that, breaks 9, slits or similar, openings 10, grooves or similar and/or to form openings 10, grooves or similar are arranged, i.e. that material in the tube-wall 3 is removed. This can be carried out in the same plant. Finally, the anchoring devices 1 or tubes 2 in the cut lengths pass through a rolling in a roller machine, which can exist in the said same plant, to form the inward bendings 7, grooves or similar, which are located in the axial direction of the tubes 2 and in square-shaped tubes between the side- edges of each wall 3, whereby fins 8, folds, folding or similar are pro¬ duced. Preferably or for the sake of simplicity the inward bendings 7 or similar are arranged along the full length of the tubes 2. However, in an embodiment the inward bendings 7 are arranged only along a part of the length of the tube 2 or from the area for the breaks 9, openings 10 or the upwards faced edge 16 and in the direction towards the second end portion 26 or second end 6 of the tube 2, i.e. that the first end port¬ ion 25 of the tube 2 may keep its original shape or square-shape, where- by a larger volume of the basis 11 will be brought into the inside 4 of the tube 2 in order to attain a more powerful compressing promoting a more effective expansion of the tube 2 and/or a more effective compress¬ ing of the basis 11, which is pressed out through the openings 10 or similar. According to an embodiment of the device 1 it is possible to slit the lower end portion 25 of the tube 2 in order to get a flaring of the end portion 25 of the tube 2, whereby one more larger volume of the basis 11 should be able to be introduced into the interior 4 of the tube 2 when anchorage the device 1 in the basis 11.

It is evident from Figs. 8 - 10 that the second end portion 26 of the tube 2 can lack in inward bendings 7 or similar or fins 8 or similar, i.e. folding. Owing to this the original shape of the tube 2 is thus kept for a simpler connection of objects with the anchoring device 1 or tube 2. The reference designation 32 shows the intermediate portion from the folding and to that part of the tube 2, which has not been subject for folding.

The flukes 30 in the embodiment, which is shown in Figs. 8 - 10, will when the basis is compressed in the inside 4 of the tube 2 be brought to a certain expansion or be forced into the basis 11 around the tube 2, whereby the fluke-shaped elements 30 with their free end parts 31 or points will form a kind of barbs or the like, see Fig. 9. The edges 15 and openings 10 will at this also be uncovered. When strains on the device 1 or tube 2 arise, which strains are in the opposite direction of the direction of introduction of the device or tube into the -basis 11, will the fluke-shaped elements 30 expand further, i.e. be brought to split up more from the tube 2 and to further engagement with the basis 11 surrounding the tube 2, which is meant to be illustrated by Fig. 10. This anchoring device 1 has in tests shown amazing results, especially in attempts to displace the device 1 or tube 2 opposite its direction of introduction into the basis 11. It is also attained an improved resist- ance against efforts to displace the device 1 or tube 2 further into the basis 11 because of that surface, which the expanded elements 30 have against the basis 11.

For driving the device 1 or tube 2 into the basis 11 a tool, a hammer machine or similar can be used and showing or is provided with a striking tool. The second end portion 26 or second end edge 6 of the tube 2 is at this provided with a driving device, which after the driving action of the device 1 or tube 2 into the basis is replaced by a compressing or packing device 20 or a ramming tool for the compressing or packing of the basis 11 in the inside 4 of the tube 2.

In the cases an improved transverse stability is needed in the device 1 or for the tube 2, the tube 2 or at least a part of the tube, as its second or upper end portion 26, or, for example, approximately from its middle and upwards in the direction towards or to its second or upper end edge 6, can be provided or is going to be provided with wings 19, fins or the like, see Fig. 14.

The wings 19 are preferably arranged to project from the said longitudi- nal edges 18 of the tube 2, see also Fig. 15. The lower end edge 29 of the wings can be shaped at angle to the device 1 or tube 2 and contri¬ bute to stabilize and stop the device against further displacement down¬ wards into the basis 11.

According to another embodiment the device 1 or tube 2 is always provided with a reinforcement device 17, which reinforce the tube 2 in its second or upper end edge 6 or end portion 26 and that one receives a fastening device to adapt something to or on the device 1, i.e. an object, which the device 1 will support or which will be anchored into a basis 11, as a post. The ring 17 should be able at this to show adjusting screws for directing of such objects or posts.

According to embodiments of the anchoring device 1 it is provided with a reinforcement 17 at the second or upper end edge 6 or end portion 26, which reinforcement hold the tube 2 together or strengthen the tube when strains occur, as in compressing of the basis 11 within the tube 2 by means of the compressing device 20 or the raππiing tool, see Figs. 16 and 17. According to the embodiment shown the reinforcement device consists of a ring, which is arranged around the upper end portion 26 of the tube 2 and can be welded to the exterior of the device 1 or tube 2. In that case the device 1 is provided with wings 19, fins or similar so are these arranged to extend so that they pass the ring 17 and end in the second or upper end edge 6 of the ring 17, device 1 or tube 2. The wings 19 can be arranged by welding to the edge 18 of the fins 8 and to the ring 17.

In that case the device 1 or tube 2 is provided with a fastening element 28 in the shape of, for example, a square, rectangular, circular, oval or the like plate and which is attached to the second or upper end edge 6 of the tube 2 by means of, for example, welding, there is no need for a reinforcement 17, strengthening device or ring, as the plate or the like at this at the same time serves as a reinforcement device or a holding together and stabilizing device for the tube 2, see Fig. 18.

When a fastening element 28 is arranged it will cover the end of the device 1 or tube 2, whereby a compressing device 20 cannot be inserted in the inside 4 of the tube 2 for compressing of the basis 11 within the tube 2. According to an embodiment of the device 1 in accordance with the invention a disc-shaped element or a plate is at this arranged in the inside 4 of the tube 2 and that the fastening element 28 is provided with a through hole 33 or a centrally located, small hole, through which an implement can be led for influence on the disc-shaped element for com¬ pressing of the basis 11 in the tube 2, see also Fig. 19.

Without exceeding the scope of the concept of the invention, modificat¬ ions of the method and the device in accordance with the invention should be possible. Thus, the tube can be provided with more inward bendings or similar to form more fins, folds or similar, for example six fins or folds, as well as more edges directed upwards and downwards. Pre¬ ferably, the device or tube shows at least one fin or fold and one break or opening, recess or similar. The existence of breaks and/or openings make the expansion of the tube easier when compressing the basis in the tube because of the weakening they form. Instead for removing material when the tube is broken through or slit up one can, as mentioned, let the material remain in the tube in a material part, whereby expandable tongu¬ es are attained, which can be brought to expand by the compressing of the basis in the tube. The basis can at this also be brought to penetrates out through the slits or the formed openings or similar. It should also be possible to arrange breaks, slits, openings or similar in several lines above one another and/or with mutual division. It is an advantage if the unmoved basis is held intact and hard or compact before and during the entering or introduction of the device or tube into the basis or that one in advance makes the basis up to even harder or more compact, i.e. that the basis is packed before the anchoring operation. The methods and devices shown and described by the embodiment examples are thus not restricted to what has been evident by the embodiment examples but soley by the following claims.