EP1105595B1 - Gerüstkupplung mit sitzsicherer hammerkopfschraube - Google Patents
Gerüstkupplung mit sitzsicherer hammerkopfschraube Download PDFInfo
- Publication number
- EP1105595B1 EP1105595B1 EP99952409A EP99952409A EP1105595B1 EP 1105595 B1 EP1105595 B1 EP 1105595B1 EP 99952409 A EP99952409 A EP 99952409A EP 99952409 A EP99952409 A EP 99952409A EP 1105595 B1 EP1105595 B1 EP 1105595B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer
- hammer head
- scaffold
- head
- coupling according
- 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.)
- Expired - Lifetime
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
- E04G7/12—Clamps or clips for crossing members
- E04G7/14—Clamps or clips for crossing members for clamping the members independently
Definitions
- the invention relates to a scaffold coupling for tubular scaffolding elements two half shells that can be placed around the scaffolding element and pivoted about a bolt
- the scaffolding element can be locked in place with a clamping element and with another a half shell or half shell pairs enclosing a scaffolding element are connected, with hammer head screws serving as clamping elements, which in a limited pivotability of the hammer heads, with the hammer heads coordinated funnels of retaining projections are pivotally supported while limited a shaft with a thread and a collar nut in the fork-shaped free End piece of the respective half shell serving as a locking bracket can be inserted or inserted is.
- Scaffolding couplings are widely known and have been known to every specialist for decades also familiar in detail. Scaffold couplings are known that are perpendicular to each other passing scaffolding elements, d. H. So couple pipes together, as well as such at a certain angle. For this purpose, the two coupling parts can be connected via a connecting joint be connected with pivot pins so that they are turned against each other can. Finally, half-shells lying next to one another in parallel are also known, which are connected to each other in the longitudinal direction and which are the coupling of pipes allow that collide vertically. Doing so in the connection area Pipe parts or pins inserted to transmit the necessary forces can.
- the invention is therefore based on the object of having a scaffold coupling to create seat-secure hammer head screws.
- the object is achieved in that the hammer head Hammer head screws are wedge-shaped and adapted to the funnel and a securing the pivoting in the funnel and twisting when tightening the clamping elements preventing contact surfaces of formations on the hammer head are specified.
- the hammer head Due to the special design of the hammer head, it sits with the insertion of the shaft into the receiving recess in the funnel in it so firmly that when the collar nut is screwed on and also when it is tightened, it twists or tilting of the hammer head in the funnel is excluded.
- the Contact surfaces provided that such twisting or tilting of the hammer head exclude.
- the wedge-shaped hammer head as such practically slips into the Funnel in such a way that it is no longer twisted when the collar nut is tightened can, but nevertheless the hammer head or rather the hammer head screw leaves the possibility of being pivoted in the funnel so that the collar nut just slide into the fork of the other half shell.
- the shaft has contact surfaces which, together with the contact surfaces on the hammer head prevent twisting in the funnel.
- the moldings and the corresponding created contact surfaces lie on the inner walls when inserted into the funnel and the receiving recess so that it is targeted in the receiving recess can be pivoted to be pushed over a scaffold element, d. H. So usually allow a pipe safely. But the dog is prevented Moving the hammer head screw at right angles to this pivoting process Funnel, d. H. a twisting. So that is always with setting the collar nut ensures that the hammer head screw sits securely in the funnel and through Shocks and sudden other movements cannot be shaken off.
- a particularly inexpensive and fixing the hammer head in the funnel The contact surfaces are designed to ensure that the formations are free Hammer head ends are assigned or formed on them.
- the hammer head is the top end of the hammer head screws forms, which connects to the thread and which is ultimately T-shaped, so that the so-called free hammer head ends are to the right and left of the shaft result.
- These hammer head ends have contact surfaces, i.e. flat surfaces, while in known hammer head screws these hammer head ends are spherical are. Because of the crowning, it cannot get stuck in the funnel come, but what is possible with the help of the flat contact surfaces described. Contrary to the previous view, the hammer head screw can be used despite the flat contact surfaces still pivoted back and forth in the associated receiving recess to enable sliding over a pipe element.
- a further optimization of the hammer head is achieved in that the free ends of the hammer head starting from the back of the hammer and a short one pointing away from the shaft Sloping, then a short vertical and finally one pointing towards the shaft Show long slopes. This is particularly encouraged by the long slope mentioned last secure fixation in the funnel, because now the free hammer head ends in addition special shape of the funnel or its boundary walls can be adjusted.
- the contact areas created in the attachment area ensure rotation, because by twisting the hammer head screw in the receiving recess is excluded.
- An additional backup is achieved when the Contact surfaces in the attachment area of the shaft in the inserted state up to the fork-shaped free end piece of the striker are sufficiently designed.
- the hammer head screw or their shaft is thus both in the area of the receiving recess, So secured in the end area of the funnel, as well as in the striker, so that also at extreme effort a twisting and thus an inclination of the hammer head screw is excluded.
- the hammer head screw slips through the flattened bearing surfaces on both sides after the end of the swiveling process again and again in the starting position back so that the corresponding contact areas with the corresponding ones Surfaces of the funnel ensure a secure fit of the hammer head screw can.
- the insertion of the hammer head ends or the entire hammer head into the Funnel is favored according to the invention in that the hammer head ends have a sliding-friendly coating, preferably in the area of the contact and Support surfaces. This can happen during use or because the Hammer heads or their hammer head ends receive a corresponding coating, which favors the corresponding fixing in the funnel, but also the Possibility to remove the hammer head screw from the receiving recess if necessary push out. It is actually enough if the contact and contact surfaces or even only the contact surfaces have a corresponding coating, wherein this can also be achieved that the funnel receives appropriate contact surfaces, so that a hammer head made of hard material is secured in it can fix.
- a particularly simple version for an insert-friendly hammer head is the one at which the hammer head ends or the entire hammer head screws are made of a material that is softer than the half-shell material. Conceivable it is, for example, on the corresponding contact surfaces or on the hammer head ends to dispense with the galvanizing normally provided here. A certain amount of wear can then occur in this area but with the appropriate training and with the appropriate size of the contact areas no fear of damage.
- the hammer head does not slide far enough into the funnel. It is then securely fixed due to the training according to the invention and cannot tilt, but it is not excluded that the scaffolding element then rests on the back of the hammer head and cannot be properly fixed. Around To prevent this, it is provided that the hammer head back has an indentation having. Even in such an unfavorable case, it is then safe to lie on the Scaffold element ensured on the hammer head back. Always safe bet the scaffolding element in the coupling is guaranteed.
- training is expedient for the rear of the funnel, after the one contact surface arranged offset by 90 ° with respect to the contact surface provided, but in the area of the shaft widening in a V-shape to the center of the hammer head is pulled up.
- This also targets the swiveling process leave without causing the dangerous tilting of the hammer head in the Funnel can come.
- the funnel is only just before the bottom of the funnel has the contact surfaces, the corresponding approach Hammer head is arranged taking into account.
- the invention provides that the Funnel is first enough to insert the hammer head screw or to facilitate the clamping element. Only with or shortly before reaching the bottom of the funnel The special shape of the funnel surrounds the hammer head. This means that it can be swiveled or, better said, it can be tilted guaranteed.
- the invention is particularly characterized in that a scaffold coupling is created, which is vibration-proof, or which is securely attached using hammer-head screws so that you can work even under difficult conditions without the exact fit of each hammer head screw must be examined separately.
- a scaffold coupling is created, which is vibration-proof, or which is securely attached using hammer-head screws so that you can work even under difficult conditions without the exact fit of each hammer head screw must be examined separately.
- the hammer heads are provided with formations or contact surfaces with the funnel in the retaining projection of the respective half-shell, so that with a harmful twisting or tilting of the hammer head can be excluded in the funnel.
- the contact area is not only provided at the hammer head ends, but also in the attachment area of the shaft, d. H.
- Fig. 1 shows a scaffold coupling 1 partially in the tensioned or braced and once in the open state.
- Such scaffold couplings 1 are used at an angle to effectively interconnect scaffolding element 2 or better said to fix each other.
- the half-shells 3, 4 can be pivoted about a bolt 5 connected to each other, one on the opposite side of the bolt Clamping element 6 is provided after inserting the scaffolding element 2 to set effectively via the clamping element 6.
- FIG. 1 Another half shell is again pivotally connected to the half shell 4 7, which is referred to as a locking bracket 8 and which serves the purpose, not shown here Scaffold element also included in the composite.
- a hammer head screw 10 which has a on the retaining projection 11 fixable hammer head 12, this hammer head 12 of the hammer head screw 10 ensures sufficient pivotability, that with the half-shell 3 open, the respective scaffold element 2 in the remaining or can be inserted into the targeted open opening.
- Figure 2 and further behind also Figure 5 illustrate that in addition to the Formations 20, 21 also in the area of the shaft 13, specifically in the attachment area 29 Formations 24 are provided on both sides. These projections 24 are sufficient to beyond the wall 31 of the receiving recess 25, so that the shaft 13 and thus no longer twist the entire hammer head screw in the funnel or can be pivoted so that the hammer head is tilted or inclined in the Funnel is excluded.
- the projections 20, 21 and also 24 are designed such that there are flat contact surfaces 27 and 28 result in the above-described fixing of the hammer head Secure 12 or shaft 13 so that the hammer head is inserted at an angle 12 or tilting is effectively prevented.
- Figure 2 shows such a hammer head screw 10 with the newly created Contact areas 27, 28 and also 30. It can also be seen here that the contact areas 27 or the planar projections 20, 21 are designed such that they form a Shank 13 forming bevel or extending in this direction. This is when inserting the hammer head screw 10 into the funnel 26 and in the receiving recess 25 a fixation of the entire hammer head 12 in the funnel 26 secured.
- Figures 4 and 5 show a scaffold coupling, which in principle according to the Figures 1 to 3 corresponds only to the oblique hammer head screw 10 is used because the half-shell 3 is shorter than in the embodiment according to the figure 1 is formed.
- FIG. 5 also shows, for example, the hammer head screw 10 for Formations 20, 21 and 22 and 24, which in turn are used Desired contact surfaces 27, 28 result for the secure fit of the hammer head screw 10 care in funnel 26.
- FIG. 6 shows a scaffold coupling 1 in use for connecting two at an angle mutually extending scaffolding elements 2, 2 '.
- one of the two hammer head screws 10 used have a hammer head 12, who sits diagonally in the funnel 26 and thus in such a way that during a shaking or sudden movement can slip into the correct seat, but then not more a secure fixation of the scaffold element 2 'ensures.
- the one shown here Hammer head screw 10, a hammer head 12 is used, which is crowned Hammerhead ends 17, 18 has.
- These spherical hammer head ends 17, 18 are can be advantageous for pivoting the hammer head screw 10 in the funnel 26 but, as shown in Figure 6, lead to a dangerous position of the hammer head 12.
- FIG. 7 shows a scaffold coupling 1 in which a scaffolding element 2 corresponds accordingly is already clamped by the two upper half-shells 3 and 4. This is done with Help of the only partially recognizable hammer head screw 10, in which the collar nut 15 is already tightened with the collar 19.
- the other half shell 7 is already with the help of the hammer head screw 10 'fixed, the seat of the hammer head through the cut in the holding projection 11' 12 can be seen in the funnel 26.
- the hammer head 12 has this training the hammer head ends 17, 18 quasi-stepped contact surfaces 27. More on this explained further below.
- the contact surfaces 28 are also in the region of the shaft 13 designed to be particularly easy to insert because the corresponding edges are chamfered or beveled. This is particularly clear from Figure 9.
- the hammer head back 23 is equipped with an indentation 48 in order to To facilitate insertion of the scaffolding element 2 and also to enable it when out for some reason the hammer head 12 is not inserted far enough into the funnel 26 can be.
- the indentation 48 corresponds to the outer wall of the scaffold element 2 or is adapted so that the scaffold element 2 or the corresponding one Pipe may also rest on the hammer head 12.
- Figure 8 illustrates such a hammer head screw 10, not only in In the area of the hammer back 23 the indentation 48 can be seen but also the stepped formation of the contact surfaces 27.
- Figure 10 shows the configurations of the slope 38, the perpendicular 39 and the Long slope 40, in the area of the hammer head ends 17, 18, the insertion into the Funnel 26 through the bevels 44, 45, 45 'or edges 42, 43, 43' already mentioned is favored.
- FIG. 11 gives a top view of the hammer back 23 of the hammer head 12 again, the trough-shaped indentation 48 being recognizable and also the formation the bevels 38 at the hammer head ends 17 and 18.
- Flattenings 47 are provided at the corners of the hammer head 12, so that a overall optimally applicable and fixable hammer head 12 results.
- the figures illustrate 12 and 13.
- the funnel 26 is shown in the side view of the scaffold coupling 1 and clarifies that the funnel deepest 55 in particular the hammer head 12 is adapted so that contact surfaces 27 'result. Since the continuation of the Deepest funnel, which is open to let the shaft 13 of the hammer head screw pass, is provided with a contact surface 28 ', the desired securing results of the tensioning element 6 in the funnel 26 or the holding projections 11. In addition the funnel-deepest 55 is then also adapted to the curved surfaces 56, so that targeted Support surfaces 32 'result.
- the funnel 26 is in the direction of the deepest funnel 55 approaches 58, from which then the adaptation to the hammer head 12 takes place, d. H. only from here are the contact surfaces 27 ', 32' predefined, so that Insert the hammer head screw, but also loosen the hammer head screw targeted to facilitate.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Electric Cable Installation (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Description
- Fig. 1
- eine Gerüstkupplung mit einseitig ein Gerüstelement festlegenden Halbschalen und einer geöffneten Halbschale bzw. einem Schließbügel,
- Fig. 2
- eine Hammerkopfschraube in Seitenansicht,
- Fig. 3
- eine Draufsicht auf einen Haltevorsprung mit Trichter,
- Fig. 4
- eine andere Ausführung einer Gerüstkupplung mit schräg sitzender Hammerkopfschraube,
- Fig. 5
- eine Hammerkopfschraube mit den verdeutlicht wiedergegebenen Anformungen,
- Fig. 6
- eine Hammerkopfschraube alter Bauart im Einsatz mit schrägsitzendem Hammerkopf,
- Fig. 7
- eine Gerüstkupplung, im Bereich des Trichters geschnitten dargestellt und mit einsitzendem Hammerkopf, mit besonders ausgebildeten Kontaktflächen und insbesondere eine Einbuchtung im Bereich des Hammerrückens,
- Fig. 8
- eine entsprechend ausgebildete Hammerkopfschraube in Seitenansicht, etwa maßstabsgetreu,
- Fig. 9
- ein vergrößerter Hammerkopf mit den gesondert ausgebildeten Schrägen und der Einbuchtung im Bereich des Hammerrückens,
- Fig. 10
- die Hammerkopfschraube von der Seite her gesehen mit Draufsicht auf das Hammerkopfende und
- Fig. 11
- eine Draufsicht auf den Hammerkopf mit entsprechender Einbuchtung,
- Fig. 12
- eine Seitenansicht der Gerüstkupplung mit angepasstem Trichter und
- Fig. 13
- eine perspektivische Wiedergabe der Gerüstkupplung, bei der wiederum die Ausbildung des Trichters angedeutet bzw. verdeutlicht ist.
Claims (16)
- Gerüstkupplung für rohrförmige Gerüstelemente (2) mit zwei Halbschalen (3, 4), die um einen Bolzen (5) schwenkbar um das Gerüstelement (2) legbar und über ein Spannelement (6) das Gerüstelement (2) umschließend festlegbar und mit einer weiteren, ein zweites Gerüstelement umschließenden Halbschale (7) oder Halbschalenpaaren verbunden sind, wobei als Spannelemente (6) Hammerkopfschrauben (10) dienen, die in eine begrenzte Verschwenkbarkeit der Hammerköpfe (12) zulassenden, mit den Hammerköpfen (12) abgestimmten Trichtern (26) von Haltevorsprüngen (11) begrenzt schwenkbar gelagert sind, während ein Schaft (13) mit einem Gewinde (14) und mit einer Bundmutter (15) in das gabelförmige freie Endstück (16, 16') der jeweiligen als Schließbügel (3,8) dienenden Halbschale einsteckbar oder einlegbar ist,
dadurch gekennzeichnet, dass der Hammerkopf (12) der Hammerkopfschrauben (10) keilförmig und dem Trichter (26) angepasst ausgebildet ist und ein die Verschwenkbarkeit wahrendes Festklemmen im Trichter (26) sicherende und ein Verdrehen beim Anziehen der Spannelemente (6) verhindernde Kontaktflächen (27) aufweist, die von Anformungen (20, 21, 22; 24) im Hammerkopf (12) vorgegeben sind. - Gerüstkupplung nach Anspruch 1,
dadurch gekennzeichnet, dass auch der Schaft (13) Kontaktflächen (28) aufweist, die zusammen mit den Kontaktflächen (27) am Hammerkopf (12) ein Verdrehen im Trichter (26) verhindern. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Anformungen (20, 21) den freien Hammerkopfenden (17, 18) zugeordnet oder an ihnen ausgebildet sind. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die freien Hammerkopfenden (17, 18) in Richtung Schaft (13) abgeschrägt und eine ebene Fläche bildend geformt sind. - Gerüstkupplung nach Anspruch 4,
dadurch gekennzeichnet, dass die freien Hammerkopfenden (17, 18) vom Hammerrücken (23) ausgehend eine kurze vom Schaft (13) wegweisende Schräge (38), dann eine kurze Senkrechte (39) und schließlich eine zum Schaft (13) weisende Langschräge (40) aufweisen. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Schaft (13) im Ansatzbereich (29) Anformungen (24) ergebend flächig ausgebildet ist. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Schaft (13) im Ansatzbereich (29) senkrechte Kontaktflächen (28) aufweist. - Gerüstkupplung nach Anspruch 5,
dadurch gekennzeichnet, dass die die Kontaktflächen (28) begrenzenden Kanten (42, 43) angefast sind, wobei die Fasen (44, 45) sich in Richtung Gewinde (14) verbreiternd ausgebildet sind. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Kontaktflächen (28) im Ansatzbereich (29) des Schaftes (13) im eingefügten Zustand bis in das gabelförmige freie Endstück (16) des Schließbügels (8) reichend ausgebildet sind. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die freien Hammerkopfenden (17, 18) auf der dem Trichter (26) zugewandten Seite geringfügig abgeflachte Auflageflächen (32) aufweisen. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die freien Hammerkopfenden (17, 18) einerseits und der Trichter (26) der Haltevorsprünge (11) andererseits korrespondierend ausgebildet sind, vorzugsweise aufeinander abgestimmte Kontakt- und Auflageflächen (27, 28, 32, 33) aufweisen. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hammerkopfenden (17, 18) eine gleitfreundliche Beschichtung aufweisen, vorzugsweise im Bereich der Kontakt- und Auflageflächen (27, 28, 32). - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Hammerkopfenden (17, 18) oder die gesamten Hammerkopfschrauben (10) aus einem gegenüber dem Halbschalenmaterial weicheren Material gefertigt sind. - Gerüstkupplung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Hammerkopfrücken (23) eine Einbuchtung (48) aufweist. - Gerüstkupplung nach Anspruch 7,
dadurch gekennzeichnet, dass eine gegenüber der Kontaktfläche (28) um 90° versetzt angeordnete Kontaktfläche (30) vorgesehen, aber im Bereich des Schaftes (13) sich V-förmig erweiternd bis mittig des Hammerkopfes (12) hochgezogen ausgerührt ist. - Gerüstkupplung nach einem der vorhergehenden Ansprüchen,
dadurch gekennzeichnet, dass der Trichter (26) erst kurz vor dem Trichtertiefsten (55) die Kontaktflächen (27', 28', 32') aufweist, wobei der entsprechende Ansatz (58) den Hammerkopf (12) berücksichtigend angeordnet ist.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19837970 | 1998-08-21 | ||
DE19837970 | 1998-08-21 | ||
DE19926231 | 1999-06-10 | ||
DE19926231A DE19926231A1 (de) | 1998-08-21 | 1999-06-10 | Gerüstkupplung mit sitzsicherer Hammerkopfschraube |
PCT/DE1999/002557 WO2000011284A1 (de) | 1998-08-21 | 1999-08-12 | Gerüstkupplung mit sitzsicherer hammerkopfschraube |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1105595A1 EP1105595A1 (de) | 2001-06-13 |
EP1105595B1 true EP1105595B1 (de) | 2003-03-19 |
Family
ID=26048312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99952409A Expired - Lifetime EP1105595B1 (de) | 1998-08-21 | 1999-08-12 | Gerüstkupplung mit sitzsicherer hammerkopfschraube |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1105595B1 (de) |
AT (1) | ATE234984T1 (de) |
AU (1) | AU6464499A (de) |
WO (1) | WO2000011284A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH264223A (it) * | 1946-06-25 | 1949-10-15 | Ferrotubi Soc | Giunto per il collegamento di sbarre, tubi, profilati e simili, per impalcature, costruzioni metalliche e per altri usi. |
US2671679A (en) * | 1948-07-27 | 1954-03-09 | Ponteggi Tubolari Dalmine Inno | Clamp |
GB810620A (en) * | 1956-09-04 | 1959-03-18 | B C Barton & Son Ltd | Improvements relating to couplings or fastenings for scaffolding and like poles |
FR1249544A (fr) * | 1959-11-20 | 1960-12-30 | Organe d'assemblage pour éléments tubulaires, applicable notamment aux échafaudages | |
CA1175870A (en) * | 1982-02-22 | 1984-10-09 | Aluma Systems Incorporated | Clamp for shoring and scaffolding frames |
-
1999
- 1999-08-12 EP EP99952409A patent/EP1105595B1/de not_active Expired - Lifetime
- 1999-08-12 AU AU64644/99A patent/AU6464499A/en not_active Abandoned
- 1999-08-12 WO PCT/DE1999/002557 patent/WO2000011284A1/de active IP Right Grant
- 1999-08-12 AT AT99952409T patent/ATE234984T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1105595A1 (de) | 2001-06-13 |
WO2000011284A1 (de) | 2000-03-02 |
AU6464499A (en) | 2000-03-14 |
ATE234984T1 (de) | 2003-04-15 |
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