EP3692215B1 - Système d'arrêt de clou de perceuse - Google Patents

Système d'arrêt de clou de perceuse Download PDF

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Publication number
EP3692215B1
EP3692215B1 EP18786244.6A EP18786244A EP3692215B1 EP 3692215 B1 EP3692215 B1 EP 3692215B1 EP 18786244 A EP18786244 A EP 18786244A EP 3692215 B1 EP3692215 B1 EP 3692215B1
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European Patent Office
Prior art keywords
holding
thread
nail
twist
twist nail
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Application number
EP18786244.6A
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German (de)
English (en)
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EP3692215A1 (fr
Inventor
Friedolf Mutschler
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Individual
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube

Definitions

  • the subject of the invention is a drill nail holding system for anchoring drill nails in a substrate according to the preamble of claim 1.
  • a drill nail is preferably to be understood as a round metal rod, the outer jacket of which is provided with a thread profile over the entire length of its course.
  • twist nails regardless of their material properties, can not only be built on the basis of a round rod, but also be angular or oval in cross section, or represent a connection of several profiles.
  • Twist nails are mostly used to connect originally separate elements, the actual holding function preferably coming about through the use of threaded washers or screw nuts that press the originally separated elements together using screws.
  • drill nails can be used for drilling-like penetration of materials which, according to their morphology, allow the penetration of such a nail.
  • drill nails can be driven into layers of material made of sand, rubble, snow, ice, gravel, stone or their mixtures with one another.
  • the ideal case is a primer consisting of snow, ice, sand or clay, for example, whereby a drill nail to be inserted follows the pulling direction of its thread profile when it is screwed in and finds the desired hold in the primer.
  • the interaction between the thread profile and the primer is not sufficient to introduce such a drill nail into a medium solely on the basis of the given pulling effect, i.e. the drilling process must be reinforced by an additional vertical force (e.g. by means of pressure or impact technology) .
  • a drill nail inserted into a primer in this way can take on a variety of functions that primarily originate from a geotechnical or structural task and can only be achieved in these work areas where drill nail technology has not been used until now with significantly higher technical and material expenditure can be.
  • such retaining plates can also be used to technically accommodate supplementary brackets, which subsequently enable further functional elements to be placed on a retaining plate in a stable manner.
  • Such retaining plates are widely known and justify their function on the one hand by appropriate material properties as well as by flat, planar shapes in order to be able to rest coherently on the surface of the included primer.
  • the DE 36 07 930 A1 discloses spherical brackets, which are used in the formation of spread anchors, but are often only connected as a simple closing element with the end of a twisted rod in order to find support in a spherical socket so that an additional deflectable bracket can be attached to it .
  • the CN 202 900 295 U how a deflection ball is used, which makes it possible to fix a drill nail with variable alignment on the curved surface of a retaining plate by means of an additional element of the same curvature by means of a final threaded screw nut in the selected position through the smooth bore channel of a spherical holder.
  • the included drill nail can basically no longer be moved after its final positioning and the spherical holder can no longer exert any vertical movement influence on the included drill nail because the spherical holder is in its vertical drill tunnel a smooth inner coating on the drill nail.
  • connection between the intermediate element and the threaded screw nut is sufficient to establish a firm connection between the retaining plate and the drill nail.
  • the ball element is in this case no significant expansion of possible functions. Understandably, therefore, the attempt to stabilize the weakening of a drill nail holder spread in this way, for example by adding additional joint elements.
  • Another generic drill nail holding system is from WO 2004/001192 A1 famous.
  • the invention is therefore based on the object of developing a spherical holder in such a way that a drill nail inserted therein finds a firm hold even if the insertion angle is inclined to the substrate, can be fixed in this angular position and can also be moved in its longitudinal direction after assembly.
  • An essential feature is that a tensioning ball is fixed by an upper and a lower retaining plate and after loosening the tensioning screw attached to the retaining plate can be turned so that the twisted nail in the tensioning ball can be fixed again in an orientation deviating from the plumb line.
  • the drill nail needs to be tightened later, the drill nail has a holding connector in the upper area that can be rotated together with the tightening ball. If the retaining connector is now rotated, an internal thread in the interior of the retaining connector acts on the external thread of the non-rotating drill nail, which thereby moves vertically downwards or upwards and migrates through the retaining connector and the ball.
  • the involved drill nail scratches the primer surrounding it through the contour of the thread profile and loosened primer material can fill any free spaces between the primer and drill nail.
  • a holding plate in a shell-shaped design is advantageously used, which by means of various variants of the shell shape can come from spherical elements or other geometric hollow shapes as a whole or in segments.
  • Such shell-shaped elements are primarily characterized by the fact that they not only partially contain the properties of a continuously flat holding surface, but also provide the possibility of twist nails deviating from the perpendicular vertical alignment, especially in their ascending shape manage with comparatively small holes in the retaining plate with a significant spread. In this way, twist nail inclinations are also possible, which cannot be achieved with conventional holding plates directed laterally.
  • Shell-shaped retaining plates or any segments derived therefrom can, of course, adapt to the irregularly shaped surfaces of included primers in some cases without the need to create an individual fit in advance of their assembly, for example through extensive earthworks. This also results in a wide range of options for connecting different shell shapes or segments to one another to form any conceivable functional units.
  • a technical embodiment that is particularly required for geotechnical tasks such as “slope stabilization” or “coastal protection”.
  • a movable ball element is located between at least two holding plates (also holding elements) and accommodates a drill nail. Regardless of the vertically specified orientation of the drill nail, it can also be moved vertically up or down at any time after its final insertion, without the To have to partially or completely dismantle the function of the drill nail holder.
  • tensioning ball is held by holding elements, which in turn are connected to one another by a screw connection.
  • These holding elements can be positively connected to the integrated tensioning ball in such a way that the tensioning ball can no longer be deflected in the selected orientation.
  • the internal thread running through the tensioning ball continues in a holding stub located on the tensioning ball.
  • a continuous thread through the retaining stub and tensioning ball or the retaining socket continues the thread of the tensioning ball.
  • Such a holding stub has a key attachment on which a tool can act in order to rotate the holding stub together with the tensioning ball connected to it.
  • the outer jacket of this wrench socket has a variable shape, which allows this wrench socket to be turned around an axial axis with a simple tool (e.g. open-ended spanner), that is the axis that also runs in the longitudinal direction through the drill nail.
  • a simple tool e.g. open-ended spanner
  • Another advantage of the present invention is the post-tensioning technique of the drill nail retaining element.
  • the primer surrounding the drill nail is "scratched" by the roughness of its thread profile in such a way that the primer material released in the process collects in any free spaces between the drill nail and the primer, where it condenses the drill nail again Environment leads. The original hold of the drill nail in the primer is thus restored.
  • Figure 1 shows the tensioning ball 1 of the twist nail holding system according to the invention, a holding stub 3 being welded onto a spherical body 2 in the example shown here.
  • tensioning ball 1 consisting of a spherical body 2 with a holding stub 3 attached to it, can also be manufactured as a one-piece component, for example in a casting process.
  • the holding stub 3 similar to a hexagon nut, has outer contact surfaces 7 on which a tool can act.
  • a tool is used to rotate the retensioning ball about an axis of rotation running through the holding connector and the spherical body 2.
  • the present invention is not limited. Any shape of a holding stub is claimed with the present invention.
  • the holding stub 3 can have only three contact surfaces or any other profiling that enables a separate tool to act in order to rotate the tensioning ball.
  • the holding connector 3 has a thread 4, in which a drill nail or the thread of a drill nail can be received according to the following figures.
  • Figure 2 shows the sectional view of the tensioning ball 1 according to the invention with the holding stub 3 to which the spherical body 2 is connected.
  • the holding stub 3 has an internal thread 4 which, in the example shown here, only extends as far as the contact point of the holding stub with the spherical body 2 below.
  • the invention is not limited to this, however, since the thread 4 can also extend through the spherical body 2 in order to be able to ensure thread engagement between the tensioning ball and the later inserted drill nail over the entire length of the tensioning ball.
  • the axis of rotation 5 runs through the center of this thread 4, around which the tensioning ball can rotate in the direction of the arrow 6 when a tool engages the engagement surfaces 7.
  • the twist nail 15 Due to the thread engagement of the thread 4 on a twist nail thread 16, the twist nail 15 is conveyed through the tension ball in the direction of arrow 8 when the tensioning ball 1 rotates about the axis of rotation 5. The rotational movement of the tensioning ball 1 is thus transferred into a transitory movement of the drill nail 15.
  • Figure 3 shows the drill nail holding system according to the invention, which includes the aforementioned tensioning ball 1.
  • the upper holding plate 9 has an opening 12 through which the spherical body 2 protrudes partially from the holding plate 9. However, this opening 12 is smaller than the diameter of the spherical body 2. In the same way, but not visible in FIG Figure 3 , the spherical body 2 protrudes from the lower holding plate 10 with an opening also made there.
  • the two holding plates 9, 10 are screwed to one another via four screws 13 which cooperate with corresponding nuts 14.
  • the twist nail 15 has the external thread 16, which corresponds to the thread 4 of the tensioning ball 1. If a rotary movement is now transmitted to the holding connector 3 of the tensioning ball 1 by a separate tool, the drill nail 15 moves in the direction of arrow 8 due to the thread engagement.
  • Figure 4 shows the representation after Figure 3 in sectional view, it being possible to see that the twist nail 15 is in thread engagement with the thread 4 over the entire length of the tensioning ball 1.
  • the spherical body 2 of the tensioning ball 1 thus also has a continuous thread 4.
  • Figure 5 shows the upper holding plate 9 and the lower holding plate 10 in a sectional view, the holding plate 9 having an opening 12 and the lower holding plate 10 having an opening 22.
  • the opening 12 in the upper holding plate 9 tapers towards the outside.
  • the opening 22 of the holding plate 10 also tapers outwards, starting from the gap 11.
  • the inner edges 26 of the opening 12 of the upper holding plate 9 form an angle 17 to one another in the example shown here.
  • the inner edges 25 of the opening 22 of the lower holding plate 10 also form an opening angle 18.
  • This shape with the outwardly tapering openings enables an inserted tensioning ball 1 to be held between the two retaining plates 9, 10.
  • the edges 25, 26 of the retaining plates 9, 10 are designed to fix the tensioning ball 1 so that it cannot fall out of the openings 12, 22.
  • the edges 25, 26 can also be curved or have a different geometric shape.
  • the gap 11 is also variable and can be made larger or smaller depending on the size of the tensioning ball 1.
  • the two retaining plates 9, 10 are then, for example, by the in Figure 4 shown screw-nut connection 13, 14 held together.
  • Such a screw connection of the individual retaining plates with one another serves to fix the tensioning ball in a desired position inside the retaining plates 9, 10.
  • the tension ball 1 with its twist nail 15 can assume an angle deviating from the vertical direction in order to drive the twist nail 15 obliquely into the ground.
  • twist nails can thus be driven obliquely into the ground in a lower holding plate 10 resting on the ground, ie at an angle smaller than 90 ° with respect to the lower holding plate 10.
  • the tensioning ball 1 remains movable between the holding plates 9, 10 until the pivoting nail 15 has assumed the correct angle and after the tensioning ball has been aligned and the twisting nail 15 has been inserted into the ground, the tensioning ball is moved between the two holding plates via the screw Nut connection 13, 14 fixed so that this angle is set permanently.
  • the screw connection 13, 14 is released so that the retensioning ball 1 is released again and can be rotated. Then a rotary movement is exerted on the tensioning ball 1 with a tool via the holding connector 3 and the drill nail 15 is driven upwards out of the ground or down into the ground, depending on the direction of rotation.
  • FIG. 6 shows a further embodiment of the invention, the upper holding plates 9 already shown in the previous figures being applied to a greatly enlarged lower holding plate 10a.
  • This holding plate 10a enables, for example, two upper holding plates to be attached and is characterized by a larger contact surface on the ground.
  • the upper holding plate 9 For screwing the upper holding plate 9 onto the lower enlarged holding plate 10a, the upper holding plate 9 has bores 19 which correspond to bores made in the lower holding plate 10a and through which the screws 13 can be inserted.
  • Figure 7 shows the in Figure 6 Holding plate 10a shown in sectional view, the lower holding plate 10 having two openings 22 with inclined edges 26. These edges 26 taper downwards so that a tensioning ball 1 inserted into the holding plate 10 cannot fall out downwards.
  • Figure 8 shows a further embodiment, wherein the lower holding plate 10a is bent in the middle and the two legs extending therefrom have an opening angle 20 between them.
  • the legs each have an opening 22 into which the tensioning ball can be inserted.
  • the left leg shows the alignment of a drill nail 15 by way of example.
  • Figure 9 shows a continuation of the curved retaining plate 10a, a joint 21 being arranged between the two legs of the lower retaining plate, with which the opening angle 20 is variable and the legs can be moved in the directions of the arrows 30, 31.
  • Figure 10 shows a further embodiment, wherein the lower holding plate 10a is bent and the openings 22 are arranged at different areas of the bends.
  • the drill nail 15 from the ground up already experiences an orientation deviating from the horizontal when it follows the lower holding plate 10a in a curved region Figure 10 is arranged.
  • Figure 11 shows a further embodiment of an enlarged lower holding plate 10a, this being of a corrugated design and being able to be arranged in the openings 22 in the corrugation troughs 32 or in the corrugation peaks 33.
  • the edges 26 (cf. Figure 5 ) occupy a different length and / or a different opening angle 18 to one another.
  • the opening 22 is arranged in a crest 33 and the edge 26 pointing in the direction of the trough 32 is shorter than the edge 26 which is adjacent in the direction of the tip of the crest 33.
  • Figure 12 shows a further embodiment, wherein the lower enlarged retaining plate 10a is folded like an accordion and thus, depending on the arrangement of the openings 22, the angle of the drill nail 15 can also be influenced.
  • Figure 13 shows a further embodiment of a curved retaining plate 10a which, depending on the opening angle 23, is divided into different segments and can be separated, for example, depending on the topographical nature of the subsoil.
  • FIG 14 shows a further embodiment of the invention, wherein the lower holding plates 10b join together to form a cup matrix.
  • a cup matrix is subdivided similarly to the ice cube container of a freezer compartment, but the holding plates 10b at the base of the individual cups converge towards one another in a pointed manner.
  • Such a cup matrix enables the acute angles formed by the lower holding plates 10b to be pressed into the ground when a force is exerted on the tensioning ball.
  • Figure 15 shows a further embodiment of the invention, two band-shaped, elongated lower retaining plates 10a being screwed to one another via a screw connection 24.
  • Figure 16 shows a continuation of Figure 15 , with three band-shaped lower retaining plates 10a being screwed to one another via a screw connection 24. It is thus possible, depending on the nature of the subsurface and the desired holding force between drill nail and subsurface, to screw different retaining plates together and, if necessary, to expand this anchor thus formed with any further retaining plates 10a.
  • Figure 17 shows a continuation of Figure 15 , wherein two band-shaped lower retaining plates 10a are also connected to one another via a screw connection 24 are connected, but the retaining plates lie lengthways, ie over a distance on the ground.
  • the tensioning balls with twist nails 15 can then be inserted into the respective opening 22.
  • Figure 18a shows a further embodiment of a lower holding plate 10c, this being spherical.
  • the retaining balls with twist nails 15 can be inserted through the openings 22, which are arranged in the outer shell of this hemisphere.
  • mandrels 27 are provided, which ensure that the lower retaining plate 10c is fixed on the ground before screwing in the drill nail 15 so that the hemispherical lower retaining plate cannot slip.
  • Figure 18b shows a further embodiment according to Figure 18a , the hemisphere being elliptical and also having spikes 27.
  • Figure 19 shows similar to Figure 14 a cup-shaped lower holding plate 10b, but the sides of the cups do not form an acute angle between them. Rather, mandrels 27 are attached to the bottom of this cup, which are used to fix the lower retaining plate before screwing the drill nails to the ground.
  • the sides of the cup-shaped lower retaining plate 10b can then be inserted into the openings 22, the tensioning balls together with the twist nails 15.
  • Figure 20 shows a further embodiment of a curved lower retaining plate 10a which also have spikes 27 for fixing on the ground.
  • the present invention is characterized by the fact that a tensioning ball is fixed by an upper and a lower holding plate and can be rotated after loosening the tensioning screws attached to the holding plate so that the drill nail can be fixed again in an orientation deviating from the perpendicular direction.
  • such an alignment can be read from a marking attached to the tensioning ball, which represents a measurement of the upper retaining plate.
  • the tightening ball has an integrally formed holding connector in the upper area, which can be rotated together with the spherical body.

Claims (10)

  1. Système d'arrêt de barre filetée composé d'un corps sphérique (2) mobile qui reçoit en lui une barre filetée (15) avec un filetage (16) et est disposé dans une ouverture (22) d'une plaque d'arrêt (9, 10, 10a, 10b, 10c), caractérisé en ce que le corps sphérique (2) est retenu par une plaque d'arrêt supérieure (9) et une plaque d'arrêt inférieure (10) et comporte un manchon d'arrêt (3) avec un filetage (4) par lequel un mouvement de rotation appliqué au manchon d'arrêt (3) est apte à être transmis au filetage (16) de la barre filetée (15).
  2. Système d'arrêt de barre filetée selon la revendication 1, caractérisé en ce que les plaques d'arrêt (9, 10, 10a, 10b, 10c) sont reliées les unes aux autres par une liaison à vis (13, 14).
  3. Système d'arrêt de barre filetée selon la revendication 1 ou 2, caractérisé en ce que le manchon d'arrêt (3) comporte des surfaces d'action réparties sur la circonférence pour l'action d'un outil.
  4. Système d'arrêt de barre filetée selon l'une des revendications 1 à 3, caractérisé en ce que le manchon d'arrêt (3) et le corps sphérique (2) relié à celui-ci est apte à tourner sur un axe de rotation (5) s'étendant à travers le filetage (4).
  5. Système d'arrêt de barre filetée selon l'une des revendications 1 à 4, caractérisé en ce que le filetage (4) s'étend à travers le corps sphérique (2).
  6. Système d'arrêt de barre filetée selon l'une des revendications 1 à 5, caractérisé en ce que la plaque d'arrêt supérieure (9) comporte une ouverture (12) à travers laquelle le corps sphérique (2) dépasse partiellement de la plaque d'arrêt supérieure (9).
  7. Système d'arrêt de barre filetée selon l'une des revendications 1 à 6, caractérisé en ce que la plaque d'arrêt inférieure (10, 10a, 10b, 10c) comporte au moins une ouverture (22) pour recevoir le corps sphérique (2).
  8. Système d'arrêt de barre filetée selon l'une des revendications 1 à 7, caractérisé en ce que la plaque d'arrêt inférieure (10, 10a, 10b, 10c) est courbe ou pliée.
  9. Procédé pour utiliser un système d'arrêt de barre filetée selon les revendications 1 à 8, caractérisé en ce qu'une boule de resserrage (1) est fixée par la plaque d'arrêt supérieure (9) et la plaque d'arrêt inférieure (10, 10a, 10b, 10c) et peut être tournée après desserrage de liaisons à vis (13, 14) appliquées sur les plaques d'arrêt (9, 10, 10a, 10b, 10c), de sorte que la barre filetée (15) guidée à travers le filetage (4) de la boule de resserrage (1) peut être fixée à nouveau dans une direction différente de la direction verticale.
  10. Procédé selon la revendication 9, caractérisé en ce que quand les plaques d'arrêt (9, 10, 10a, 10b, 10c) sont desserrées, le mouvement de rotation exercé sur le manchon d'arrêt (3) sur un axe de rotation passant à travers le filetage (4) fait venir le filetage (4) en prise dans le filetage extérieur (16) de la barre filetée (15) qui ne tourne pas et transforme le mouvement rotatif de la boule de resserrage (1) en mouvement de translation de la barre filetée (15).
EP18786244.6A 2017-10-06 2018-10-04 Système d'arrêt de clou de perceuse Active EP3692215B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202017106065.9U DE202017106065U1 (de) 2017-10-06 2017-10-06 Drillnagel-Haltesystem
PCT/EP2018/076957 WO2019068787A1 (fr) 2017-10-06 2018-10-04 Système d'arrêt de clou de perceuse

Publications (2)

Publication Number Publication Date
EP3692215A1 EP3692215A1 (fr) 2020-08-12
EP3692215B1 true EP3692215B1 (fr) 2021-08-18

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EP18786244.6A Active EP3692215B1 (fr) 2017-10-06 2018-10-04 Système d'arrêt de clou de perceuse

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EP (1) EP3692215B1 (fr)
DE (1) DE202017106065U1 (fr)
WO (1) WO2019068787A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020109352A1 (de) 2020-04-03 2021-10-07 Friedolf Mutschler Stützanordnung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3607930A1 (de) 1985-04-06 1986-12-11 Hermann 7321 Göppingen-Hohenstaufen Schwahn Mehrteiliger fundamentanker
AUPS310702A0 (en) * 2002-06-21 2002-07-11 Industrial Rollformers Pty Limited Rock bolting system
CN202900295U (zh) 2012-10-26 2013-04-24 山东科技大学 一种自动调心让压锚杆

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EP3692215A1 (fr) 2020-08-12
DE202017106065U1 (de) 2019-01-10
WO2019068787A1 (fr) 2019-04-11

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