DE1807520A1 - Screw-in ground anchor, especially long permanent anchor, with tubular socket wrench - Google Patents

Description

The invention relates to a screw-in ground anchor, in particular a long permanent anchor, with a tubular plug-in. Key with a round cross-section, the armature consisting of a round armature shaft with a helically wound armature disk welded directly to its lower end and the tubular socket wrench can be slipped onto the armature disk.

In the case of screw-in ground anchors, a distinction is essentially made between so-called assembly anchors and so-called

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Permanent anchor. The former are for a lot of times Screwing in and unscrewing is determined and are usually shorter than permanent anchors, which are used for permanent anchoring certain and often 2 - 3 m long. Known anchors, especially long permanent anchors, have immediate Above the lower achraub- or helically wound armature disk a square on which an over correspondingly long socket wrench inserted into the anchor shaft engages. This is the anchorage at screwing in kept free of torsion forces. Of the The disadvantage is that the square requires more work in the production and in particular an automatic welding of the anchor plate and makes the square practically impossible. When handling the disadvantage is that the square necessarily protrudes over the eonet round anchor shaft. Accordingly, the tubular socket wrench have an inner square at the lower end and thus an outer thickening greater soil displacement necessary. While screwing in, I set the hole over the thickening The lower end of the socket wrench is often closed again, making it difficult to remove the key. Unscrewing such an anchor is hardly possible with the lower square edge, because it makes big ones Difficulty getting the tubular socket wrench with its thickened lower square back into the ground, as it is stuck around the anchor shaft 809825/0335

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has to push in, mostly the anchor has to be dug up to loosen it. This is for I-mounting anchors unbearable, but also a great disadvantage with permanent anchors, because these permanent anchors should also be even if after 3 years, it can be loosened and unscrewed.

Of the above, there are other known terrestrial i anchor, particularly short Iflontageanker whose shaft at the upper end or in the upper third of an eyelet for inserting a Nlontagestange barren another approach means for a tool, u / ie z. B. a square, with this eyelet or this square or other attachment means from the armature disk at least the screw-in depth of the anchor has a distance, by means of this eyelet or the upper square or another upper attachment means, the anchor can easily be released again, however, the screwing in, which means that a significantly greater torque is necessary, must also be carried out in this way, with the anchor shaft being heavily loaded against torsion over its length corresponding to the screwing depth. For this reason alone, the shaft would have to be 2 m long z. B. be brought from 16 mm in diameter to at least 20 mm in diameter, which makes the production more expensive. This known type of anchor is therefore not suitable for permanent anchors

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BATH ORIGINAL

The disadvantages indicated above are also present in another known ground anchor, in which the anchor shaft is not round, but square or polygonal and is screwed into a thickened hub on which the armature disk so that the anchor shaft is not thickened goes through from the armature disk to the upper end. The armature disk does not extend radially to the armature shaft. at In this known embodiment, the socket wrench at the lower end must have a corresponding one because of the thickened hub

Have thickening. As a result, greater soil displacement is necessary when screwing in. During the screwing in, the hole over the thickening at the lower end of the socket wrench often becomes blocked again and makes it difficult to remove the wrench. For the reasons mentioned at the beginning, it is hardly possible to unscrew this known anchor. In this known armature, a recess in the armature disk is provided as a means of attack for the socket wrench. This does not increase the cost of manufacturing such anchors unbeträcht- W lent, which must be borne in mind that this is one! Mass products. In this known anchor, the socket wrench has a square cross-section, which makes it even more difficult to screw in.

Furthermore, a ground anchor with a pull rope and a hollow socket wrench is known, in which the latter has two lateral plug-in cams and a screw thread is provided. But the anchor does not have a central shaft. Used to connect to the outside

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only one wire or rope at a time. The cams on the socket wrench protrude far at the side, make it difficult to screw in and pulling out the key and preventing any subsequent penetration of the socket wrench into the ground for unscrewing the armature disk. When screwing in the armature disk, the two lateral cams are not excessively stressed, so that screwing into heavy or gravelly soils is not possible.

The invention is based on the object of providing a screw-in ground anchor and socket wrench of the types mentioned at the beginning Kind of creating, so in accordance with the First described above known, provided with a lower square design of the anchor shaft during screwing is kept free of torsional forces and can therefore be kept relatively thin, this ground anchor however, it should be greatly improved with regard to the aforementioned disadvantages, in particular it should be lighter can be manufactured and screwed in and out more easily. '

In solving this problem, the anchor according to the invention is characterized - starting from the type described at the beginning by the combination of the partly known features that the armature has one of the armature disk to The upper end has a round shank that goes through essentially without a thickening, that the socket wrench at his has a tubular wrench mouth with the lower end an approximately axially downwardly extending stop

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edge to the immediate stop next to the round anchor shaft in the screwing direction on the relevant upper one approximately radially directed end edge of the helically wound armature disk reaching up to the armature round shaft and that / Oer socket wrench also one from the bottom to at the top has a tubular round shaft that goes through essentially without a thickening and tightly encloses the anchor shaft

The advantages of the invention are very great in practice. During manufacture, the fact that the lower square No need for any ground anchor, saving material and time. It is possible for the first time in a relatively simple way Way to automatically weld the armature disk to the shaft. This is a significant factor with the hundreds of thousands of such ground anchors that are used every year Weight. The fact that at the lower end of the socket wrench the thickening that was previously necessary for the square socket If it is omitted, the screw-in hole becomes smaller in diameter and the socket wrench no longer needs to be pulled out aggravated by soil set above it and it is Above all, much lighter later, the one in the outer diameter Push the smaller socket wrench back into the ground around the anchor shaft in order to secure the anchor unscrew again.

Appropriately, the wrench mouth of the socket wrench a lower end edge, which is essentially helically wound in accordance with the armature disk, and the stop

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edge is at an intermediate axial section educated. This shape u / ird achieved that while the key is being screwed in, it cannot slip upwards and the armature disk remains tight at all times engages. Furthermore, through this shape, the stop abutting the armature disk is extremely robust and through the tubular wall of the socket wrench bzui. Key mouth very strong in terms of strength.

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To unscrew the ground anchor, could the socket wrench be clamped to the anchor shaft at the upper end , for example? the "This mare possible because apply when unscrewing much smaller torques eind than when screwing" However, in order to unscrew _t attack also directly to the anchor plate with the socket wrench, in a development of the invention at the lower ends of the spanner opening a second approximately axially downwardly extending stop edge arranged for immediate stop next to the armature shaft in unscrewing on the relevant lower, approximately radially directed end edge of the helically wound armature disk reaching up to the armature shaft expediently, this second stop edge is formed on an axially extending circumferential section of the tubular wrench mouth, which is opposite the first screw armature protrudes in the screw-in direction «

In order to unscrew the ground anchor beforehand necessary to facilitate penetration of the tubular socket wrench which tightly encloses the anchor shaft ztueckweise the lower helically extending and / or approximately axi; 1 directed and / or The edges of the tubular wrench mouth running roughly in the circumferential direction in the screw-in direction or downwards radially from the outside; bevelled according to inesn. This makes it possible to use the socket wrench at

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to push firmly deposited soil above the anchor shaft protruding from the ground,

In order to create a socket wrench in a simpler way » the 8OtIiOhI one at the upper end edge of the anchor plate in Screwing in direction as well as acting on the lower end edge of the armature disk in unscrewing direction Has stop edge, can in a development of the invention g

the helical geuiundsns anchor disc of the ground anchor at its upper and / or at its lower approximately radially directed end edge have a recess or a shortening for unhindered insertion of the axirl an axial section of the wrench mouth of the socket wrench up to the stop in the unscrewing direction the lower, et u / a radially directed end edge of the armature disk.

The tubular key maui of the socket wrench can be interchangeably connectable to the tubular shaft of the socket wrench or connectable to it or in some other way with it; be formed firmly connectable single piece. It then know z. B. ajs quenched and tempered steel are produced and hardened and only later uierden welded to the shaft of the Steckschlisseis. Ee is then also possible _p to cut off this square shoulder on socket wrenches with a square neck that are already in use and that

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SAD ORIGiNAL

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Schlüsöelmai 1 according to the invention to be welded or otherwise to be attached

Further details and advantages of the invention emerge from the following description of the exemplary embodiments shown schematically in the drawing. Show here Fig. 1 is a first embodiment & type of the invention

Ground anchor, in side view, Flg. 2 a first execution & type of the associated

socket wrench according to the invention, in side view, Fig. 3 shows an enlarged view of the lower end of a

other embodiment of the invention Socket wrench, in side view, this embodiment of the socket wrench being shown in phantom in FIG. 1, and Fig. 4 shows a section according to IV-IV in Fig. 1, wherein dot-dash modifications are shown.

The embodiment of the ground anchor according to the invention shown in FIGS. 1 and 4 with solid lines consists essentially of tsinem anchor shaft 1 and an armature disk 2, which is wound in a helical-helical manner and which is welded to its lower end. The upper end 3 of the anchor shaft 1 is provided with a thread for connecting the to be braced

or means to be anchored. The anchor shaft Ϊ is 909825/0335

ßÄO ORIGINAL

a round shaft, represented by the armature disk 2 to upper end 3 thickening bungaloa goes through, Cs are alao neither a square at the lower end nor any other protruding abrasive at the upper end available. The helically wound armature disk 2 has an approximately radially directed lower end edge and a radially directed upper end edge 5. The direction of oil screwing is indicated by the arrow 6.

The AusfUhrungsert shown in Fig. 2 of the socket wrench according to the invention consists of a likewise from bottom to top substantially thickened continuous tubular round shaft 7, which the Anchor shaft 1 tightly encloses. A handle 8 is attached to its upper end and to its lower end The end of a keyhole 9 is formed. This key The mouth 9 is also tubular and has the same diameter as the round shank 7 of the socket wrench. At the wrench mouth 9 is an etna axially after The stop edge 10 extending downward is formed for the direct stop in the screwing direction 6 on the upper, approximately radially directed end edge S of the armature disk 2. The wrench mouth 9 has a helical shape substantially corresponding to the armature disk 2 winding lower end edge 11. The stop edge 10 is located on the axial section 12 lying in between educated. This Axialabachnitt 12 engages in the

Execution according to Fig. 2 downwards in screw-in 909825/0335

direction 6 without paragraph a little ahead, uia Tig. 2 shows. , This makes screwing in easier. For the same purpose the lower ones are helical End edge 11 and the approximately exially directed stop edge 1D radially from the outside inwards downwards or «in the screwing direction 6 at 13. Instead or in addition, it can be helical Bound lower closure brand 11 of the wrench mouth also be slightly beveled radially from the outside to the inside upwards, roughly corresponding to a conventional weld seam between armature disk 2 and armature shaft 1, thus the lower end edge 11 sits snugly on the anchor disc and not on the weld seam

The one in Tig. The modified embodiment shown in FIG. 3 has a keyhole 9 with corresponding to FIG Armature disc 2 helically wound lower Abechlußrand 11. On the corresponding axial section 12 let the stop edge 10 in Axial alignment formed, namely - as Fig. 3 shows - all axially directed base wall of a helical circumference assumption 14 dee tubular wrench mouthea. This creates a screwing-in direction 6 opposite the stop edge 10 over a shoulder 15 protruding, eioh exially extending peripheral part 16, which axially after below over the helically wound lower 909 82 5/0335

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Abachlußrand 11 aufauagraiPt and there "in" second, eich abutment edge extending approximately axially downwards 1? to the immediate stop in the screwing direction 18 on the relevant lower approximately radially directed End edge 4 of the helical anchor axle · 2. The working position is with dash-dotted lines Lines drawn in Fig. 1 «This second stop Edge 17 can at the lower end 19 in the screwing direction I 18 advance something without a paragraph, as FIG. 3 shows, or protrude with a paragraph not shown, see above that the unintentional sliding of the lower approximately radially directed end edge 4 of the armature disk 2 is made much more difficult.

This is also the case in the embodiment shown in FIG screw-shaped lower end 11 of the wrench mouth downwards and that of the second -

Abutment edge 17 opposite approximately axially directed edge of the peripheral section 16 in the insertion direction 6 at 13 or 20 radially from the outside to the inside beveled in order to facilitate screwing in. Furthermore, the lower end 19 of the peripheral section 16 is beveled downwards in the same way.

Ulis in Fig. 2 indicated by dash-dotted lines with the line 21, the tubular SchlOsaelmaul 9 dee Socket wrench al a to the tubular shaft 7 attached to it or fixed to it in another way

everyone on andei 9825/0335

It "

A single piece 22 can be connected.

In Fig. 4 it is shown that usually the approximately radially directed upper end edge 5 and lower end edge of the anchor plate 2 in the lower end direction fairly close lying next to each other, it is possible, as indicated by dash-dotted lines, at the top and / or bottom End edge 4, 5 to form a recess 23 or a shortening 24, so that an axial portion of the Key jaws axially unhindered up to the stop in unscrewing direction 18 at the lower approximately rrfdial directed end edge 4 of the armature disk 2 can be inserted through «earth. This would result in the type of execution according to Fig. 3, the circumferential recess 14 become superfluous, so that the SchlÜsaelmaul 9 made easier be known.

Within the scope of the invention, of course, a number of modifications of the embodiments described and illustrated are also possible. It is essential that the Anchor shaft 1 practically thickening from the bottom up at the top so that the tubular socket wrench can be attached with the tightest of enclosures, and that the socket wrench also has no thickening can be executed as a continuous tube.

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Claims (1)

Claims 1. Screw-in ground anchor, especially long permanent anchor, with tubular socket wrench, round cross-sections ^, where'bei The anchor consists of an anchor round shaft with a screw-shaped joint directly connected to its lower end Armature plate and the tubular socket wrench up to can be attached to the anchor plate, characterized by the combination of the partly known Features that the armature has a round shank (1) which runs from the armature disk (2) to the upper end (3) essentially without a thickening, that the socket wrench on its lower end has a tubular wrench mouth (9) with an axially downwardly extending one Stop edge (10) to the immediate stop next to the round anchor shaft (1) in the screwing direction (β) on the 9 09825/0335 relevant upper approximately radially directed end edge (5) of the helically wound armature disk (2) reaching up to the rounded armature shank (1) and that the socket wrench also a tubular, which is essentially thickening-free from bottom to top The anchor shaft (1) has a tightly enclosing round shaft (7). 2. Ground anchor and socket wrench according to claim 1, characterized in that the The wrench mouth (9) of the socket wrench has a helical shape essentially corresponding to the armature disk (2) has a winding lower end edge (11) and the stop edge (10) at an intermediate axial section (12) is formed. 3. Ground anchor and socket wrench according to claim 2, characterized in that the helically wound lower end edge (11) of the key mouth (9) roughly corresponding to a conventional one Weld seam between armature disk (2) and armature shank (1) is beveled radially from the outside to the inside upwards. 4. ground anchor and socket wrench according to claim 2 or 3, characterized in that the the axial section (12) having the stop edge (10) downwards in the screwing-in direction (6) essentially without any paragraphs anticipating (Fig. 2). 90.9825 / 0335 ! ■■! Lip «· .: 5. Ground anchor and socket wrench according to one of the claims 1-3, characterized in that at the lower end of the key mouth (9) a second approximately axially downwardly extending stop edge (17) is arranged next to the immediate.Anschlag the anchor shank (1) in the unscrewing direction (18) at the relevant lower approximately radially directed, up to Armature shaft (1) reaching end edge (4) of the helically wound armature disk (2). 6. ground anchor and socket wrench according to claim 5, characterized in that the 'to / eite stop edge (17) on an axially extending peripheral section (16) of the tubular Wrench mouth (9) is formed, which opposite the first stop edge (10) in the screwing direction (6) preferably protrudes with a shoulder (15) (Fig. 3). 7. ground anchor and socket wrench according to claim 5 or 6, characterized in that the second stop edge (17) at the lower end (19) in the unscrewing direction (18) slightly protrudes forward 'or protrudes with a paragraph. co. oo 8. Ground anchor and socket wrench according to claim 6, d a cn characterized in that the first stop edge (10) the approximately axially directed The base wall of a helical circumferential recess (14) of the tubular wrench mouth (9) is. 9. Ground anchor and socket wrench according to one of claims 1-8, characterized in that that the lower helically extending and / or the approximately axially directed and / or the approximately circumferential edges of the tubular wrench mouth (9) radially from the outside inwards downwards bzuj. are bevelled in the screwing direction (6). 10 · Ground anchor and socket wrench according to one of claims 1-9, characterized in that that the helically wound armature disk (2) of the ground anchor at its upper and / or at its lower approximately radially directed end edge (4, 5) has a recess (23) or a shortening (24) for axially unimpeded insertion of an axial section of the wrench mouth of the socket wrench up to the stop in the unscrewing direction (18) on the lower etuia radially directed end edge (4) of the armature disk (2). 11. Ground anchor and socket wrench according to one of the claims 1-11, characterized in that the tubular wrench mouth (9 ') of the {socket wrench than interchangeably connectable to the tubular shaft (7) of the socket wrench or connectable to it or a single piece (22) that can be firmly connected to it in some other way is formed. 909825/0335