EP2248995A2 - Clamp connection - Google Patents

Clamp connection Download PDF

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Publication number
EP2248995A2
EP2248995A2 EP10004197A EP10004197A EP2248995A2 EP 2248995 A2 EP2248995 A2 EP 2248995A2 EP 10004197 A EP10004197 A EP 10004197A EP 10004197 A EP10004197 A EP 10004197A EP 2248995 A2 EP2248995 A2 EP 2248995A2
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EP
European Patent Office
Prior art keywords
flap
einhängeflanschen
ears
longitudinal section
clamping connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10004197A
Other languages
German (de)
French (fr)
Other versions
EP2248995B1 (en
EP2248995A3 (en
Inventor
Rudi Podjadtke
Rüdiger Oostenryck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co KG
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Publication date
Application filed by Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Priority to PL10004197T priority Critical patent/PL2248995T3/en
Publication of EP2248995A2 publication Critical patent/EP2248995A2/en
Publication of EP2248995A3 publication Critical patent/EP2248995A3/en
Application granted granted Critical
Publication of EP2248995B1 publication Critical patent/EP2248995B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure

Definitions

  • the invention relates to a clamping connection for overlapping nested U-shaped, lateral ears having profile segments of the yielding underground construction according to the features in the preamble of claim 1.
  • Such a resilient underground construction with U-shaped profile segments is within the scope of DE 41 04 798 A1 known.
  • the profile segments each have two curved legs, a web connecting the legs and two arranged at the ends remote from the web of the legs, sideways directed flanges, which are also called ears because of their shape. In the overlapping region of two successive profile segments, these are nested, wherein the ears of the encompassing profile segment are supported in the grooves of the inset profile segment, which are formed there on the ears.
  • the clamping of the profile segments in the overlapping area is carried out by means of at least two clamping connections, each clamping connection composed of a top flap with lateral straight Ein rehabilitationflanschen, a bottom flap with lateral straight clamping flanges and recesses in the Ein psychologyflanschen and clamping flanges by passing bolts and nuts on the screw rotatable nuts.
  • bottom flap is largely U-shaped and adjacent to the side clamping flanges legs and a leg connecting web, wherein in the transition region of the clamping flanges on the legs Stitzwulste are provided, which are supported in throats of the ears of the encompassing profile segment, there is the top flap from a middle longitudinal section with a retracted straight central region as well as at this longitudinal section end subsequent straight Ein rehabilitationflanschen.
  • the bolts are inserted with their correspondingly adapted heads in these Ein rehabilitationflansche and enforce their shanks recesses in the Ein distrlanschen and in the clamping flanges of the bottom flap.
  • the top flap should be effective as a carrier supported on two supports, which is deformed under the influence of the screw forces.
  • the operational deformation of the carrier as a tab can be followed by the change in shape of the neutral thread.
  • the frictional resistance between the overlapping nested profile segments is partially generated via defined and partially over-defined pressure surfaces from the normal force of the bolts.
  • a pressure is to be generated via the contact areas of the upper flap with the ears of the inserted profile segment, the higher To ensure insertion resistance of the profile segments in the event of rock load occurring.
  • this insertion resistance must be considered as a function of the tolerances of the profile segments and also their widths - measured over the outer sides of the ears. It is only really effective if the transitional areas of the upper flap and the ears of the inserted profile segment are in perfect contact. Due to various processing steps, such as tempering, bending the profiled segments cut to length of, for example, 8 m, the width of the profile segments can vary within certain limits. This has the consequence that a clamping connection with a top flap and bottom flap so far may have a defect that the transition areas between the central longitudinal section of a top flap and the Einitatiflanschen come into proper contact with the outer surfaces of the ears, so that the insertion resistance is not with the desired security can be determined.
  • the invention has for its object to provide a clamping connection for U-shaped profile segments of the yielding underground construction, in which the certain of the upper flap insertion resistance can also be guaranteed if the widths of the profile segments differ significantly from the nominal size.
  • the top flap is now between the targeted hook-shaped curved lateral Ein rehabilitationflanschen a retracted, rectilinearly extending central longitudinal section and between the central longitudinal section and the Ein concerningflanschen to the Einberichtflanschen oppositely curved, the ears on the inner profile segment surface comprehensive comprehensive locking portions with concave inner surfaces and convex outer surfaces.
  • These latching sections comprise with their inner surfaces the ears of the inserted profile segment.
  • either the mutually facing inner surfaces of the latching sections now lie on the outer surface regions of the ears or the inner surfaces of the latching sections facing away from one another are located on the mutually facing surface regions of the ears.
  • the insertion resistance is further improved by the fact that the middle straight portion of the upper flap is retracted by about the thickness of the upper flap.
  • pockets may be formed at the bottom of the concave inner surfaces of the locking portions. The pockets ensure proper contact of the outer surfaces of the ears of the embedded profile segment on the concave inner surfaces of the locking portions.
  • the transverse to the upper flap pockets may have oval contours.
  • the convex outer surfaces of the latching sections are provided with frontal chamfers.
  • the Stauerwulste are provided with central recesses. In this way, they are next to the recesses lying areas of Stauerwulste properly in the throats of the ears of the encompassing profile segment.
  • FIG. 1 is a longitudinal section of a compliant underground arched construction 1 shown, which can be used in mining or tunneling.
  • the expansion 1 consists of several identically shaped profile segments 2, 3. In each case two in the circumferential direction UR of the expansion 1 successive profile segments 2, 3 are shown in the FIGS. 1 and 2 nested and in the overlapping area B with the help of two clamped connections 4 arranged at a distance from one another are clamped together so that, when exposed to rock loads, the profile segments 2, 3 which are braced with one another can displace relative to one another to a limited extent, with a shortening of the expansion 1 in the circumferential direction UR.
  • the profile segments 2, 3 are identical and each have a U-shaped cross-section, which consists of two curved legs 5, a leg connecting the web 5 6 and two arranged on the web 6 remote from the ends of the legs 5 arranged ears 7.
  • the ears 7 are directed sideways outward and have a web 6 facing away from the convex surface area 8 and a web 6 facing the concave area in the form of a throat 9.
  • FIG. 2 shows that the nested profile segments 2, 3 are supported against each other such that the convex outer surfaces 8 of the ears 7 of the encompassing profile segment 2 lie in the grooves 9 of the ears 7 of the inner profile segment 3.
  • the clamping connections 4 for the nested profile segments 2, 3 each consist of an ears 7 of the engaging profile segment 3 cross-top flap 10, a encompassing profile segment 2 embracing lower flap 11 and two lateral bolts 12 and nuts 13th
  • resulting upper flap 10 has a straight central longitudinal section 14, two adjoining this longitudinal section 14 arcuately curved latching portions 15 and two lateral hook-shaped Einitatiflansche 16.
  • the locking portions 15 are curved in opposite directions to the Einitatiflanschen 16. It's the FIG. 4 it can be seen that the central longitudinal section 14 is pulled in by approximately the thickness D of the upper flap 10 in the direction of a plane E - E which tangentially affects the convex surfaces 17 of the suspension flanges 16.
  • the convex outer surfaces 20 of the locking portions 15 are provided with frontal bevels 21 ( FIGS. 4 to 6 ).
  • the bolts have 12 heads 22 which are the contours of the Einschlansche 16 contour-matched and with their shanks 23 recesses 24 in the Ein vonschen 16 and recesses 25 in clamping flanges 26 of the lower flaps 11 (see also FIGS. 7 and 8 ) push through.
  • the lower flaps 11 of the clamp connections 4 are U-shaped ( Figures 2 . 3 . 7 and 8 ) and have at the transitions from the lateral straight clamping flanges 26 on curved, connected by a web 27 leg 28 Stauerwulste 29, which are facing the upper flap 10. These Stauerwulste 29 hold in the grooves 9 of the encompassing profile segment. 2
  • FIGS. 7 and 8 show FIGS. 7 and 8 in that recesses 30 are provided centrally of these support beads 29, so that the support beads 29 lie only with the end portions in the grooves 9.
  • Get profile segments 2, 3 with a larger profile width PB used, as in the FIG. 2 is shown, it can be seen that when tightening the bolt 12 by means of nuts 13 an additional frictional resistance between the upper flap 10 and the ears 7 of the engaging profile segment 3 is constructed by the fact that the mutually facing portions of the inner concave surfaces 18 of the locking portions 15 at the opposite surface portions of the ears 7 according to the arrows PF come to rest.
  • the embodiment corresponds to FIG. 3 that of the FIG. 2 , so that can be dispensed with a repeated explanation.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Clamps And Clips (AREA)

Abstract

The joint (4) has an upper clip (10) with lateral hook-shaped hanging flanges, a lower clip (11) with lateral straight clamping flanges and recesses in the hanging flanges, and screw bolts (12) pushing the clamping flanges. Nuts (13) are rotatable on the screw bolts. The upper clip has a retracted middle longitudinal section between the lateral hanging flanges and oppositely curved locking sections between a middle longitudinal section and the lateral hanging flanges. The middle longitudinal section of the upper clip linearly extends between the curved locking sections.

Description

Die Erfindung betrifft eine Klemmverbindung für überlappend ineinander liegende U-förmige, seitliche Ohren aufweisende Profilsegmente des nachgiebigen untertägigen Ausbaus gemäß den Merkmalen im Oberbegriff des Anspruchs 1.The invention relates to a clamping connection for overlapping nested U-shaped, lateral ears having profile segments of the yielding underground construction according to the features in the preamble of claim 1.

Ein derartiger nachgiebiger untertägiger Ausbau mit U-förmigen Profilsegmenten ist im Umfang der DE 41 04 798 A1 bekannt. Die Profilsegmente weisen jeweils zwei gebogene Schenkel, einen die Schenkel verbindenden Steg sowie zwei an den dem Steg abgewandten Enden der Schenkel angeordnete, seitwärts gerichtete Flansche auf, die wegen ihrer Form auch Ohren genannt werden. Im Überlappungsbereich von zwei aufeinander folgenden Profilsegmenten werden diese ineinander geschachtelt, wobei sich die Ohren des umgreifenden Profilsegments in Kehlen des einliegenden Profilsegments abstützen, die dort an den Ohren ausgebildet sind.Such a resilient underground construction with U-shaped profile segments is within the scope of DE 41 04 798 A1 known. The profile segments each have two curved legs, a web connecting the legs and two arranged at the ends remote from the web of the legs, sideways directed flanges, which are also called ears because of their shape. In the overlapping region of two successive profile segments, these are nested, wherein the ears of the encompassing profile segment are supported in the grooves of the inset profile segment, which are formed there on the ears.

Die Verspannung der Profilsegmente im Überlappungsbereich erfolgt mit Hilfe von mindestens zwei Klemmverbindungen, wobei sich jede Klemmverbindung aus einer Oberlasche mit seitlichen geraden Einhängeflanschen, einer Unterlasche mit seitlichen geraden Spannflanschen und Ausnehmungen in den Einhängeflanschen und Spannflanschen durchsetzenden Schraubbolzen sowie auf die Schraubbolzen drehbaren Muttern zusammensetzt. Während die Unterlasche weitgehend U-förmig ausgebildet ist und neben den seitlichen Spannflanschen Schenkel und einen die Schenkel verbindenden Steg aufweist, wobei im Übergangsbereich von den Spannflanschen auf die Schenkel Stützwulste vorgesehen sind, die sich in Kehlen der Ohren des umgreifenden Profilsegments abstützen, besteht die Oberlasche aus einem mittleren Längenabschnitt mit einem eingezogenen geraden Zentralbereich sowie sich an diesen Längenabschnitt endseitig anschließenden geraden Einhängeflanschen. Die Schraubbolzen werden mit ihren entsprechend angepassten Köpfen in diese Einhängeflansche eingelegt und durchsetzen mit ihren Schäften Ausnehmungen in den Einhängeflanschen und in den Spannflanschen der Unterlasche. Mit Hilfe auf die Gewindeabschnitte der Schraubbolzen gedrehten Muttern werden dann die Einhängeflansche der Oberlasche und die Spannflansche der Unterlasche gegeneinander gezogen, wobei die Stützwulste der Unterlasche in die Kehlen der Ohren des umgreifenden Profilsegments gedrückt werden und die Oberlasche mit geraden Übergangsabschnitten zwischen dem Zentralbereich und den Einhängeflanschen die Ohren des einliegenden Profilsegments mit Spiel übergreift.The clamping of the profile segments in the overlapping area is carried out by means of at least two clamping connections, each clamping connection composed of a top flap with lateral straight Einhängeflanschen, a bottom flap with lateral straight clamping flanges and recesses in the Einhängeflanschen and clamping flanges by passing bolts and nuts on the screw rotatable nuts. While the bottom flap is largely U-shaped and adjacent to the side clamping flanges legs and a leg connecting web, wherein in the transition region of the clamping flanges on the legs Stützwulste are provided, which are supported in throats of the ears of the encompassing profile segment, there is the top flap from a middle longitudinal section with a retracted straight central region as well as at this longitudinal section end subsequent straight Einhängeflanschen. The bolts are inserted with their correspondingly adapted heads in these Einhängeflansche and enforce their shanks recesses in the Einhängeflanschen and in the clamping flanges of the bottom flap. With the help of turned on the threaded portions of the bolts nuts then the Einhängeflansche the upper flap and the clamping flanges of the lower flap are pulled against each other, wherein the Stützwulste the lower flap are pressed into the throats of the ears of the encompassing profile segment and the upper flap with straight transition sections between the central region and the Einhängeflanschen the ears of the embedded profile segment overlaps with play.

Hierbei soll die Oberlasche als ein auf zwei Stützen gelagerter Träger wirksam sein, welcher unter dem Einfluss der Schraubenkräfte deformiert wird. Die betriebsgemäße Deformation des Trägers als Lasche kann durch die Formänderung des neutralen Fadens gefolgt werden.Here, the top flap should be effective as a carrier supported on two supports, which is deformed under the influence of the screw forces. The operational deformation of the carrier as a tab can be followed by the change in shape of the neutral thread.

Der Reibungswiderstand zwischen den überlappend ineinander gelegten Profilsegmenten wird teilweise über definierte und teilweise über undefinierte Druckflächen aus der Normalkraft der Schraubbolzen erzeugt. Hierbei soll über die Kontaktbereiche der Oberlasche mit den Ohren des einliegenden Profilsegments ein Druck erzeugt werden, der einen höheren Einschubwiderstand der Profilsegmente bei auftretender Gebirgslast gewährleisten soll.The frictional resistance between the overlapping nested profile segments is partially generated via defined and partially over-defined pressure surfaces from the normal force of the bolts. Here, a pressure is to be generated via the contact areas of the upper flap with the ears of the inserted profile segment, the higher To ensure insertion resistance of the profile segments in the event of rock load occurring.

Dieser Einschubwiderstand muss jedoch in Abhängigkeit von den Toleranzen der Profilsegmente und auch ihren Breiten - gemessen über die Außenseiten der Ohren - betrachtet werden. Er ist nur dann wirklich wirksam, wenn die Übergangsbereiche der Oberlasche mit den Ohren des einliegenden Profilsegments in einem einwandfreien Kontakt stehen. Aufgrund diverser Bearbeitungsschritte, wie zum Beispiel dem Vergüten, Biegen der von langen Profilsträngen auf eine Länge von zum Beispiel 8 m abgelängten Profilsegmente kann die Breite der Profilsegmente in bestimmten Grenzen variieren. Dies hat zur Folge, dass eine Klemmverbindung mit einer Oberlasche und Unterlasche insofern einen Mangel besitzen kann, dass die Übergangsbereiche zwischen dem mittleren Längenabschnitt einer Oberlasche und den Einhängeflanschen in keinen einwandfreien Kontakt mit den äußeren Oberflächen der Ohren kommen, so dass der Einschubwiderstand nicht mit der gewünschten Sicherheit bestimmt werden kann.However, this insertion resistance must be considered as a function of the tolerances of the profile segments and also their widths - measured over the outer sides of the ears. It is only really effective if the transitional areas of the upper flap and the ears of the inserted profile segment are in perfect contact. Due to various processing steps, such as tempering, bending the profiled segments cut to length of, for example, 8 m, the width of the profile segments can vary within certain limits. This has the consequence that a clamping connection with a top flap and bottom flap so far may have a defect that the transition areas between the central longitudinal section of a top flap and the Einhängeflanschen come into proper contact with the outer surfaces of the ears, so that the insertion resistance is not with the desired security can be determined.

Der Erfindung liegt die Aufgabe zugrunde, eine Klemmverbindung für U-förmige Profilsegmente des nachgiebigen untertägigen Ausbaus zu schaffen, bei welcher der von der Oberlasche bestimmte Einschubwiderstand auch dann gewährleistet werden kann, wenn die Breiten der Profilsegmente von dem Nennmaß erheblich abweichen.The invention has for its object to provide a clamping connection for U-shaped profile segments of the yielding underground construction, in which the certain of the upper flap insertion resistance can also be guaranteed if the widths of the profile segments differ significantly from the nominal size.

Die Lösung dieser Aufgabe besteht nach der Erfindung in den Merkmalen des Anspruchs 1.The solution to this problem consists according to the invention in the features of claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Ansprüche 2 bis 6.Advantageous developments of the invention are subject matter of claims 2 to 6.

Die Oberlasche soll nunmehr zwischen den gezielt hakenförmig ausgebildeten gekrümmten seitlichen Einhängeflanschen einen eingezogenen, sich geradlinig erstreckenden mittleren Längenabschnitt und zwischen dem mittleren Längenabschnitt und den Einhängeflanschen zu den Einhängeflanschen gegensinnig gekrümmte, die Ohren an dem innen liegenden Profilsegment flächig umfassende Rastabschnitte mit konkaven Innenflächen und konvexen Außenflächen aufweisen. Diese Rastabschnitte umfassen mit ihren Innenflächen die Ohren des einliegenden Profilsegments. In Abhängigkeit von der tatsächlichen Breite eines Profilsegments liegen nunmehr entweder die einander zugewandten Innenflächen der Rastabschnitte an den äußeren Oberflächenbereichen der Ohren oder es liegen die voneinander abgewandten Innenflächen der Rastabschnitte an den einander zugewandten Oberflächenbereichen der Ohren. Beim Anziehen der Muttern kann somit stets der gewünschte Einschubwiderstand sichergestellt werden, weil die von den Schraubbolzen ausgeübten Kräfte immer auf einen Oberflächenbereich der Ohren des einliegenden Profilsegments übertragen werden. Unterstützt wird diese verbesserte Kraftübertragung dadurch, dass die Oberlasche aufgrund des eingezogenen mittleren Längenabschnitts steifer ausgebildet ist.The top flap is now between the targeted hook-shaped curved lateral Einhängeflanschen a retracted, rectilinearly extending central longitudinal section and between the central longitudinal section and the Einhängeflanschen to the Einhängeflanschen oppositely curved, the ears on the inner profile segment surface comprehensive comprehensive locking portions with concave inner surfaces and convex outer surfaces. These latching sections comprise with their inner surfaces the ears of the inserted profile segment. Depending on the actual width of a profile segment, either the mutually facing inner surfaces of the latching sections now lie on the outer surface regions of the ears or the inner surfaces of the latching sections facing away from one another are located on the mutually facing surface regions of the ears. When tightening the nuts thus always the desired insertion resistance can be ensured because the forces exerted by the bolts forces are always transmitted to a surface region of the ears of the inlaid profile segment. This improved power transmission is supported by the fact that the upper flap is stiffer due to the retracted middle length.

Der Einschubwiderstand wird dadurch noch weiter verbessert, dass der mittlere gerade Längenabschnitt der Oberlasche um etwa die Dicke der Oberlasche eingezogen ist.The insertion resistance is further improved by the fact that the middle straight portion of the upper flap is retracted by about the thickness of the upper flap.

Ferner können am Grund der konkaven Innenflächen der Rastabschnitte Taschen ausgebildet sein. Die Taschen sichern eine einwandfreie Anlage der äußeren Oberflächen der Ohren des einliegenden Profilsegments an den konkaven Innenflächen der Rastabschnitte.Further, pockets may be formed at the bottom of the concave inner surfaces of the locking portions. The pockets ensure proper contact of the outer surfaces of the ears of the embedded profile segment on the concave inner surfaces of the locking portions.

Die quer zu der Oberlasche verlaufenden Taschen können ovale Konturen aufweisen.The transverse to the upper flap pockets may have oval contours.

Des Weiteren ist es zweckmäßig, dass die konvexen Außenflächen der Rastabschnitte mit stirnseitigen Fasen versehen sind.Furthermore, it is expedient that the convex outer surfaces of the latching sections are provided with frontal chamfers.

Um auch der Unterlasche hinsichtlich der Stützwulste zwischen den seitlichen Spannflanschen und den Schenkeln eine einwandfreie Anlage in den Kehlen des umgreifenden Profilsegments zu sichern, sind die Stützwulste mit mittigen Aussparungen versehen. Auf diese Weise liegen die neben den Aussparungen liegenden Bereiche der Stützwulste einwandfrei in den Kehlen der Ohren des umgreifenden Profilsegments.In order to secure the bottom flap with respect to the Stützwulste between the side clamping flanges and the legs a proper investment in the throats of the encompassing profile segment, the Stützwulste are provided with central recesses. In this way, they are next to the recesses lying areas of Stützwulste properly in the throats of the ears of the encompassing profile segment.

Die Erfindung ist nachfolgend anhand von in den Zeichnungen veranschaulichten Ausführungsbeispielen näher erläutert. Es zeigen:

Figur 1
einen Abschnitt eines untertägigen Bogenausbaus im Bereich von zwei sich überlappenden Profilsegmenten;
Figur 2
einen Querschnitt durch die Darstellung der Figur 1 entlang der Linie II - II in Richtung der Pfeile II a gesehen;
Figur 3
die Darstellung der Figur 2 bei einem Bogenausbau mit schmaleren Profilsegmenten;
Figur 4
eine Oberlasche einer Klemmverbindung des Bogenausbaus in der Stirnansicht;
Figur 5
eine Draufsicht auf einen Endabschnitt der Oberlasche der Figur 4 in Richtung des Pfeils V gesehen;
Figur 6
eine Seitenansicht der Oberlasche der Figur 4 in Richtung des Pfeils VI gesehen;
Figur 7
eine Stirnansicht auf eine Unterlasche einer Klemmverbindung des Bogenausbaus der Figur 1 und
Figur 8
eine Seitenansicht auf die Unterlasche der Figur 7 in Richtung des Pfeils VIII gesehen.
The invention is explained in more detail with reference to embodiments illustrated in the drawings. Show it:
FIG. 1
a section of an underground arch expansion in the area of two overlapping profile segments;
FIG. 2
a cross section through the representation of FIG. 1 along the line II - II seen in the direction of the arrows II a;
FIG. 3
the representation of FIG. 2 in a sheet removal with narrower profile segments;
FIG. 4
a top flap of a clamp connection of the sheet expansion in the front view;
FIG. 5
a plan view of an end portion of the upper flap of FIG. 4 seen in the direction of the arrow V;
FIG. 6
a side view of the upper flap of FIG. 4 seen in the direction of the arrow VI;
FIG. 7
an end view of a lower flap of a clamping connection of the sheet structure of FIG. 1 and
FIG. 8
a side view of the bottom flap of FIG. 7 seen in the direction of arrow VIII.

In der Figur 1 ist ein Längenabschnitt eines nachgiebigen untertägigen bogenförmigen Ausbaus 1 dargestellt, der im Berg- oder Tunnelbau eingesetzt werden kann. Der Ausbau 1 besteht aus mehreren identisch ausgebildeten Profilsegmenten 2, 3. Jeweils zwei in Umfangsrichtung UR des Ausbaus 1 aufeinander folgende Profilsegmente 2, 3 werden gemäß der Darstellung der Figuren 1 und 2 ineinander gelegt und im Überlappungsbereich B mit Hilfe von zwei im Abstand voneinander angeordneten Klemmverbindungen 4 so miteinander verspannt, dass bei Gebirgsbelastungen die miteinander verspannten Profilsegmente 2, 3 sich zueinander relativ begrenzt verlagern können, wobei eine Verkürzung des Ausbaus 1 in Umfangsrichtung UR erfolgt.In the FIG. 1 is a longitudinal section of a compliant underground arched construction 1 shown, which can be used in mining or tunneling. The expansion 1 consists of several identically shaped profile segments 2, 3. In each case two in the circumferential direction UR of the expansion 1 successive profile segments 2, 3 are shown in the FIGS. 1 and 2 nested and in the overlapping area B with the help of two clamped connections 4 arranged at a distance from one another are clamped together so that, when exposed to rock loads, the profile segments 2, 3 which are braced with one another can displace relative to one another to a limited extent, with a shortening of the expansion 1 in the circumferential direction UR.

Die Profilsegmente 2, 3 sind identisch ausgebildet und weisen jeweils einen U-förmigen Querschnitt auf, der sich aus zwei gekrümmten Schenkeln 5, einen die Schenkel 5 verbindenden Steg 6 und zwei an den dem Steg 6 abgewandten Enden der Schenkel 5 angeordneten Ohren 7 zusammensetzt. Die Ohren 7 sind seitwärts nach außen gerichtet und besitzen einen dem Steg 6 abgewandten konvexen Oberflächenbereich 8 sowie einen dem Steg 6 zugewandten konkaven Bereich in Form einer Kehle 9. Insbesondere die Figur 2 zeigt, dass die ineinander liegenden Profilsegmente 2, 3 sich derart aneinander abstützen, dass die konvexen äußeren Oberflächen 8 der Ohren 7 des umgreifenden Profilsegments 2 in den Kehlen 9 der Ohren 7 des innen liegenden Profilsegments 3 liegen.The profile segments 2, 3 are identical and each have a U-shaped cross-section, which consists of two curved legs 5, a leg connecting the web 5 6 and two arranged on the web 6 remote from the ends of the legs 5 arranged ears 7. The ears 7 are directed sideways outward and have a web 6 facing away from the convex surface area 8 and a web 6 facing the concave area in the form of a throat 9. In particular the FIG. 2 shows that the nested profile segments 2, 3 are supported against each other such that the convex outer surfaces 8 of the ears 7 of the encompassing profile segment 2 lie in the grooves 9 of the ears 7 of the inner profile segment 3.

Die Klemmverbindungen 4 für die ineinander liegenden Profilsegmente 2, 3 bestehen jeweils aus einer die Ohren 7 des eingreifenden Profilsegments 3 übergreifenden Oberlasche 10, einer das umgreifende Profilsegment 2 umgreifenden Unterlasche 11 sowie zwei seitlichen Schraubbolzen 12 und Muttern 13.The clamping connections 4 for the nested profile segments 2, 3 each consist of an ears 7 of the engaging profile segment 3 cross-top flap 10, a encompassing profile segment 2 embracing lower flap 11 and two lateral bolts 12 and nuts 13th

Jede aus den Figuren 4 bis 6 im Einzelnen hervorgehende Oberlasche 10 weist einen geraden mittleren Längenabschnitt 14, zwei sich an diesen Längenabschnitt 14 anschließende bogenförmig gekrümmte Rastabschnitte 15 sowie zwei seitliche hakenförmige Einhängeflansche 16 auf. Die Rastabschnitte 15 sind zu den Einhängeflanschen 16 gegensinnig gekrümmt. Es ist der Figur 4 zu entnehmen, dass der mittlere Längenabschnitt 14 um etwa die Dicke D der Oberlasche 10 in Richtung auf eine Ebene E - E eingezogen ist, welche die konvexen Oberflächen 17 der Einhängeflansche 16 tangiert.Every one of the FIGS. 4 to 6 in detail resulting upper flap 10 has a straight central longitudinal section 14, two adjoining this longitudinal section 14 arcuately curved latching portions 15 and two lateral hook-shaped Einhängeflansche 16. The locking portions 15 are curved in opposite directions to the Einhängeflanschen 16. It's the FIG. 4 it can be seen that the central longitudinal section 14 is pulled in by approximately the thickness D of the upper flap 10 in the direction of a plane E - E which tangentially affects the convex surfaces 17 of the suspension flanges 16.

Am Grund der konkaven Innenflächen 18 der Rastabschnitte 15 sind Taschen 19 ausgebildet, die sich quer zu der Oberlasche 10 erstrecken und ovale Konturen aufweisen (Figuren 4 und 5).At the base of the concave inner surfaces 18 of the locking portions 15 pockets 19 are formed, which extend transversely to the upper flap 10 and have oval contours ( FIGS. 4 and 5 ).

Die konvexen Außenflächen 20 der Rastabschnitte 15 sind mit stirnseitigen Fasen 21 versehen (Figuren 4 bis 6).The convex outer surfaces 20 of the locking portions 15 are provided with frontal bevels 21 ( FIGS. 4 to 6 ).

Wie die Figuren 1 und 2 deutlich zeigen, besitzen die Schraubbolzen 12 Köpfe 22, welche den Innenseiten der Einhängeflansche 16 konturengenau angepasst sind und mit ihren Schäften 23 Ausnehmungen 24 in den Einhängeflanschen 16 und Ausnehmungen 25 in Spannflanschen 26 der Unterlaschen 11 (siehe auch Figuren 7 und 8) durchsetzen.As the FIGS. 1 and 2 clearly show, the bolts have 12 heads 22 which are the contours of the Einhängeflansche 16 contour-matched and with their shanks 23 recesses 24 in the Einhängeflanschen 16 and recesses 25 in clamping flanges 26 of the lower flaps 11 (see also FIGS. 7 and 8 ) push through.

Die Unterlaschen 11 der Klemmverbindungen 4 sind U-förmig gestaltet (Figuren 2, 3, 7 und 8 ) und weisen an den Übergängen von den seitlichen geraden Spannflanschen 26 auf gekrümmte, mittels eines Stegs 27 verbundene Schenkel 28 Stützwulste 29 auf, die der Oberlasche 10 zugewandt sind. Diese Stützwulste 29 fassen in die Kehlen 9 des umgreifenden Profilsegments 2.The lower flaps 11 of the clamp connections 4 are U-shaped ( Figures 2 . 3 . 7 and 8 ) and have at the transitions from the lateral straight clamping flanges 26 on curved, connected by a web 27 leg 28 Stützwulste 29, which are facing the upper flap 10. These Stützwulste 29 hold in the grooves 9 of the encompassing profile segment. 2

Ferner zeigen die Figuren 7 und 8, dass mittig dieser Stützwulste 29 Aussparungen 30 vorgesehen sind, so dass die Stützwulste 29 lediglich mit den Endabschnitten in den Kehlen 9 liegen.Furthermore, the show FIGS. 7 and 8 in that recesses 30 are provided centrally of these support beads 29, so that the support beads 29 lie only with the end portions in the grooves 9.

Gelangen Profilsegmente 2, 3 mit einer größeren Profilbreite PB zum Einsatz, wie es in der Figur 2 dargestellt ist, so ist zu sehen, dass beim Anziehen der Schraubbolzen 12 mit Hilfe der Muttern 13 ein zusätzlicher Reibungswiderstand zwischen der Oberlasche 10 und den Ohren 7 des eingreifenden Profilsegments 3 dadurch aufgebaut wird, dass die einander zugewandten Bereiche der inneren konkaven Flächen 18 der Rastabschnitte 15 an den einander abgewandten Oberflächenabschnitten der Ohren 7 gemäß den Pfeilen PF zur Anlage gelangen.Get profile segments 2, 3 with a larger profile width PB used, as in the FIG. 2 is shown, it can be seen that when tightening the bolt 12 by means of nuts 13 an additional frictional resistance between the upper flap 10 and the ears 7 of the engaging profile segment 3 is constructed by the fact that the mutually facing portions of the inner concave surfaces 18 of the locking portions 15 at the opposite surface portions of the ears 7 according to the arrows PF come to rest.

Wird dieselbe Klemmverbindung 4 bei Profilsegmenten 2, 3 mit geringeren Profilbreiten PB1 angewendet (Figur 3), so ist zu sehen, dass beim Anziehen der Schraubbolzen 12 mit Hilfe der Muttern 13 dann die einander abgewandten inneren konkaven Flächen 18 der Rastabschnitte 15 mit den gegenüberliegenden konvexen Oberflächenbereichen 8 der Ohren 7 des eingreifenden Profilsegments 3 in Kontakt gelangen (Pfeile PF1).If the same clamping connection 4 is used for profile segments 2, 3 with smaller profile widths PB1 (FIG. FIG. 3 ), it can be seen that when putting on the bolt 12 by means of nuts 13 then the opposite inner concave surfaces 18 of the locking portions 15 with the opposite convex surface areas 8 of the ears 7 of the engaging profile segment 3 come into contact (arrows PF1).

Ansonsten entspricht die Ausführungsform der Figur 3 derjenigen der Figur 2, so dass von einer nochmaligen Erläuterung abgesehen werden kann.Otherwise, the embodiment corresponds to FIG. 3 that of the FIG. 2 , so that can be dispensed with a repeated explanation.

Bezugszeichen:Reference numerals:

1 -1 -
Ausbauexpansion
2 -2 -
umgreifendes Profilsegmentencompassing profile segment
3 -3 -
eingreifendes Profilsegmentengaging profile segment
4 -4 -
Klemmverbindungenclamp connections
5 -5 -
Schenkel v. 2, 3Thighs v. 2, 3
6 -6 -
Steg v. 2, 3Bridge v. 2, 3
7 -7 -
Ohren v. 2, 3Ears v. 2, 3
8 -8th -
konvexe Oberflächen v. 7convex surfaces v. 7
9 -9 -
Kehlen v. 7Throats v. 7
10 -10 -
Oberlaschetop flap
11 -11 -
Unterlascheunder tab
12 -12 -
Schraubbolzenbolts
13 -13 -
Mutternnuts
14 -14 -
mittlerer Längenabschnitt v. 10middle section v. 10
15 -15 -
Rastabschnitte v. 10Rest sections v. 10
16 -16 -
Einhängeflansche v. 10Hook-on flanges v. 10
17 -17 -
konvexe Oberflächen v. 16convex surfaces v. 16
18 -18 -
konkave Innenflächen v. 15concave inner surfaces v. 15
19 -19 -
Taschen in 18Bags in 18
20 -20 -
konvexe Außenflächen v. 15convex outer surfaces v. 15
21 -21 -
Fasen an 20Chamfers at 20
22 -22 -
Köpfe v. 12Heads v. 12
23 -23 -
Schäfte v. 12Shafts v. 12
24 -24 -
Ausnehmungen in 16Recesses in 16
25 -25 -
Ausnehmungen in 26Recesses in 26
26 -26 -
Spannflansche v. 11Clamping flanges v. 11
27 -27 -
Steg v. 11Bridge v. 11
28 -28 -
Schenkel v. 11Thighs v. 11
29 -29 -
StützwulsteStützwulste
30 -30 -
Aussparungen in 29Recesses in 29
B -B -
Überlappungsbereichoverlap area
D -D -
Dicke v. 10Thickness v. 10
E - E -E - E -
Ebene an 17Level at 17
PB -PB -
Profilbreiteprofile width
PB1 -PB1 -
Profilbreiteprofile width
PF -PF -
Pfeilearrows
PF1 -PF1 -
Pfeilearrows
UR -UR -
Umfangsrichtung v. 1Circumferential direction v. 1

Claims (6)

Klemmverbindung (4) für überlappend ineinander liegende U-förmige, seitliche Ohren (7) aufweisende Profilsegmente (2, 3) des nachgiebigen untertägigen Ausbaus (1), welche eine Oberlasche (10) mit seitlichen Einhängeflanschen (16), eine U-förmige Unterlasche (11) mit seitlichen geraden Spannflanschen (26) sowie Stützwulsten (29) und Ausnehmungen (24, 25) in den Einhängeflanschen (16) und Spannflanschen (26) durchsetzende Schraubbolzen (12) sowie auf die Schraubbolzen (12) drehbare Muttern (13) aufweist, dadurch gekennzeichnet, dass die Oberlasche (10) zwischen den hakenförmig ausgebildeten gekrümmten seitlichen Einhängeflanschen (16) einen eingezogenen, sich geradlinig erstreckenden mittleren Längenabschnitt (14) und zwischen dem mittleren Längenabschnitt (14) und den Einhängeflanschen (16) zu den Einhängeflanschen (16) gegensinnig gekrümmte, die Ohren (7) an dem innenliegenden Profilsegment (3) flächig umfassende Rastabschnitte (15) mit konkaven Innenflächen (18) und konvexen Außenflächen (20) aufweist.Clamping connection (4) for overlapping U-shaped, side ears (7) having profile segments (2, 3) of the resilient underground construction (1), which a top flap (10) with lateral Einhängeflanschen (16), a U-shaped bottom flap (11) with lateral straight clamping flanges (26) and Stützwulsten (29) and recesses (24, 25) in the Einhängeflanschen (16) and clamping flanges (26) passing through bolts (12) and on the bolts (12) rotatable nuts (13) characterized in that the upper flap (10) between the hook-shaped curved lateral Einhängeflanschen (16) has a retracted, rectilinearly extending central longitudinal section (14) and between the central longitudinal section (14) and the Einhängeflanschen (16) to the Einhängeflanschen ( 16) oppositely curved, the ears (7) on the inner profile segment (3) flat comprehensive latching portions (15) with concave inner surfaces (18) and having convex outer surfaces (20). Klemmverbindung nach Anspruch 1, dadurch gekennzeichnet, dass der mittlere Längenabschnitt (14) der Oberlasche (10) um etwa die Dicke (D) der Oberlasche (10) eingezogen ist.Clamping connection according to claim 1, characterized in that the central longitudinal section (14) of the upper flap (10) is retracted by approximately the thickness (D) of the upper flap (10). Klemmverbindung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass am Grund der konkaven Innenflächen (18) der Rastabschnitte (15) Taschen (19) ausgebildet sind.Clamping connection according to claim 1 or 2, characterized in that at the bottom of the concave inner surfaces (18) of the latching portions (15) pockets (19) are formed. Klemmverbindung nach Anspruch 3, dadurch gekennzeichnet, dass die quer zu der Oberlasche (10) verlaufenden Taschen (19) ovale Konturen aufweisen.Clamping connection according to claim 3, characterized in that the transverse to the upper flap (10) extending pockets (19) have oval contours. Klemmverbindung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die konvexen Außenflächen (20) der Rastabschnitte (15) mit stirnseitigen Fasen (21) versehen sind.Clamping connection according to one of claims 1 to 4, characterized in that the convex outer surfaces (20) of the latching portions (15) are provided with frontal chamfers (21). Klemmverbindung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Stützwulste (29) an der Unterlasche (11) jeweils eine mittige Aussparung (30) aufweisen.Clamping connection according to one of claims 1 to 5, characterized in that the Stützwulste (29) on the lower flap (11) each have a central recess (30).
EP10004197.9A 2009-05-08 2010-04-20 Clamp connection Not-in-force EP2248995B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10004197T PL2248995T3 (en) 2009-05-08 2010-04-20 Clamp connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009006707U DE202009006707U1 (en) 2009-05-08 2009-05-08 Clamp connection for U-shaped profile segments

Publications (3)

Publication Number Publication Date
EP2248995A2 true EP2248995A2 (en) 2010-11-10
EP2248995A3 EP2248995A3 (en) 2013-02-27
EP2248995B1 EP2248995B1 (en) 2014-10-22

Family

ID=40874470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10004197.9A Not-in-force EP2248995B1 (en) 2009-05-08 2010-04-20 Clamp connection

Country Status (4)

Country Link
EP (1) EP2248995B1 (en)
DE (1) DE202009006707U1 (en)
ES (1) ES2526121T3 (en)
PL (1) PL2248995T3 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104798A1 (en) 1991-02-16 1993-07-29 Lenin Kohaszati Muvek Steel V=shaped clamping elements and arrangement - has curved steel body with end of each arm bulged having shoulder with concave, and convex parts

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245599A1 (en) * 1982-12-09 1984-06-14 Stahlausbau Gmbh, 4650 Gelsenkirchen Connection for sliding arch support
DE20200964U1 (en) * 2002-01-24 2002-05-29 Bochumer Eisen Heintzmann Arch construction for routes and tunnels, especially for mining routes in mining underground operations

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4104798A1 (en) 1991-02-16 1993-07-29 Lenin Kohaszati Muvek Steel V=shaped clamping elements and arrangement - has curved steel body with end of each arm bulged having shoulder with concave, and convex parts

Also Published As

Publication number Publication date
PL2248995T3 (en) 2015-04-30
DE202009006707U1 (en) 2009-07-16
EP2248995B1 (en) 2014-10-22
EP2248995A3 (en) 2013-02-27
ES2526121T3 (en) 2015-01-07

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