WO2000011284A1 - Gerüstkupplung mit sitzsicherer hammerkopfschraube - Google Patents
Gerüstkupplung mit sitzsicherer hammerkopfschraube Download PDFInfo
- Publication number
- WO2000011284A1 WO2000011284A1 PCT/DE1999/002557 DE9902557W WO0011284A1 WO 2000011284 A1 WO2000011284 A1 WO 2000011284A1 DE 9902557 W DE9902557 W DE 9902557W WO 0011284 A1 WO0011284 A1 WO 0011284A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hammer head
- funnel
- coupling according
- scaffold
- shaft
- Prior art date
Links
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 with two half shells, which can be swiveled around the scaffolding element about a bolt and which can be fixed in a surrounding manner via a tensioning element and connected to a further half shell or half shell pairs surrounding a second scaffolding element, hammer screws being used as tensioning elements, the funnel-shaped holding projections, which allow the hammer heads to be pivoted to a limited extent, are pivoted to a limited extent, while the shaft with the thread and with the collar nut can be inserted or inserted into the fork-shaped free end piece of the respective half-shell serving as a locking bracket.
- Scaffold couplings are widely known and have been known for decades and are familiar to every specialist in detail. Scaffold couplings are known which couple scaffolding elements which pass at right angles to one another, that is to say pipes, as well as those at a certain angle. For this purpose, the two coupling parts can be connected via a connecting joint with pivot pins, so that they can be turned against each other. Finally, half-shells lying next to one another in parallel are also known, which are connected to one another in the longitudinal direction and which enable the coupling of pipes which abut one another perpendicularly. Pipe parts or pins are inserted into the connection area in order to be able to transmit the necessary forces.
- hammer head screws serve as clamping elements
- these hammer head screws have a long shaft with a thread and a hammer head that is rounded to allow a limited pivoting in the funnel receiving it or in the holding projections .
- the better-known and newer hammer heads are spherical both on the side surfaces and in the longitudinal extent, circular components also being known.
- a collar nut is placed on the shaft with the thread. ter screwed on so as to effectively connect the two half-shells and thereby clamp the respective pipes or scaffolding element. When tightening the collar nuts, the scaffolders have to ensure that the collar nut transmits the necessary pressure to ensure that the respective scaffolding elements are effectively fixed.
- the invention is therefore based on the object of creating a scaffold coupling with permanently secure hammer head screws.
- the hammer head of the hammer head screws and the funnel of the holding projections are designed to be coordinated with one another and have contact surfaces which ensure that they can be pivoted in the funnel and prevent twisting when the tensioning elements are tightened.
- the head when the shank is inserted into the receiving recess in the funnel, the head is fixed in such a way 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 are provided which preclude such twisting or tilting of the hammer head.
- the hammer head as such practically slides into the funnel in such a way that it can no longer be rotated when the collar nut is tightened, but still allows the hammer head or rather the hammer head screw to be pivoted in the funnel so that the collar nut simply moves in the fork of the other half-shell slides in.
- the hammer head is wedge-shaped and adapted to the funnel and is provided with the contact-flat predetermined formations, the shaft also having contact surfaces which overall prevent rotation in the funnel.
- the formations and the correspondingly created contact surfaces lie against the inner walls of the funnel in such a way that it can be pivoted in a targeted manner in the receiving recess in order to make it possible to push it securely over a scaffold element, that is to say generally as a tube.
- a scaffold element that is to say generally as a tube.
- the back and forth movement at right angles to this pivoting process is prevented by the hammer head screw in the funnel.
- a particularly favorable design of the contact surfaces which ensures that the hammer head is fixed in the funnel is that in which the projections are assigned to the free hammer head ends or are formed on them.
- the hammer head forms the upper end of the hammer head screws, which connects to the thread and which is ultimately T-shaped, so that the so-called free hammer head ends result to the right and left of the shaft.
- These hammer head ends have contact surfaces, that is to say flat surfaces, while in known hammer head screws these hammer head ends are spherical. Due to the crowning, it cannot get stuck in the funnel, but this is possible with the help of the flat contact surfaces described. Contrary to the previous view, despite the flat contact surfaces, the hammer head screw can still be pivoted back and forth in the associated receiving recess in order to make it possible to slide over a tubular element.
- a further securing of the hammer head or the hammer head screw in the funnel of the holding projection is achieved if the free hammer head ends are chamfered in the direction of the shaft and are formed to form a flat surface. This pulls the hammer head or the entire hammer head screw into the funnel, so that the hammer head and thus the hammer head screw completely prevent canting when the collar screw is fixed.
- a further optimization of the hammer head is achieved in that the free hammer head ends, starting from the back of the hammer, have a short bevel pointing away from the shaft, then a short perpendicular and finally a long bevel pointing towards the shaft. This is particularly encouraged by the long slope mentioned last Secure fixing in the funnel, because now the free hammer head ends are additionally adapted to the special shape of the funnel or its boundary walls.
- a further securing of the hammer head screw against tilting or twisting is achieved in that the shank is flat in the attachment area, resulting in contact surfaces.
- This shaft which lies against the lower end or the edges of the receiving recess, also prevents the hammer head screw from rotating and being displaced in the funnel.
- the free hammer head ends have vertical contact surfaces.
- the shaft is also equipped with corresponding contact surfaces, so that the shaft in the attachment area, like the free ends of the hammer head, accordingly has vertical contact surfaces, specifically perpendicular to the longitudinal extension of the hammer head.
- the edges delimiting the contact surfaces are chamfered, the chamfers being designed to widen in the direction of the thread. These special chamfers also facilitate the pivoting of the hammer head screw in the intended direction, d. H. around the longitudinal axis of the hammer head.
- a particularly expedient design is that in which the contact surfaces are formed on the free ends of the hammer heads and in the attachment area of the shaft.
- the contact surfaces created in the attachment area ensure that they cannot rotate because they prevent the hammer head screw from rotating in the receiving recess.
- An additional securing is achieved when the contact surfaces in the attachment area of the shaft are designed to extend into the fork-shaped free end piece of the striker in the inserted state.
- the hammer head screw or its shaft is thus secured both in the area of the receiving recess, that is to say in the end area of the funnel, and in the striker, so that twisting and thus inclination of the hammer head screw is ruled out even when extreme force is applied.
- the hammer head screw Due to the flattened bearing surfaces on both sides, the hammer head screw always slips back into the starting position after the swiveling process, so that the corresponding contact surfaces with the corresponding surfaces of the funnel can also ensure a secure fit of the hammer head screw.
- the adaptation takes place not only the hammer head, but also the funnel, that is to say both components, which naturally brings with it even greater security.
- the corresponding modification of the hammer head screws described is sufficient because it already provides the sufficient security that is necessary for the operation of such scaffold couplings, but the solution described above is an optimization.
- 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 contact surfaces. This can be done during use or by giving the hammer heads or their hammer head ends an appropriate coating which favors the corresponding fixing in the funnel, but which at the same time also gives the possibility of pushing the hammer head screw out of the receiving recess if necessary. It is actually sufficient if the contact and support surfaces or only the contact surfaces have a corresponding coating, whereby this can also be achieved that the funnel is provided with corresponding contact surfaces, so that a hammer head made of hard material can securely settle in it.
- a particularly simple version for an insert-friendly hammer head is that in which the hammer ends or the entire hammer head screws are made of a material that is softer than the half-shell material. It is conceivable, for example, to dispense with the galvanic galvanizing normally provided here at the corresponding contact surfaces or at the hammer head ends. A certain amount of wear can then occur in this area, but with the appropriate training and with the appropriate size of the contact surfaces no fear of damage.
- the hammer head does not slide far enough into the funnel. Although it is then securely fixed due to the design according to the invention and cannot tilt, it cannot be ruled out that the scaffolding element then rests on the hammer head back and cannot be properly fixed. In order to prevent this, it is provided that the back of the hammer head has an indentation which is designed to correspond to the clamped scaffolding element, that is, above all, a tube. Even in such an unfavorable case, a secure resting of the scaffold element on the back of the hammer head is ensured. An always safe placement of the scaffold element in the coupling is guaranteed.
- a design is expedient, in particular for the rear of the funnel, according to which a further contact surface similar to the contact surface is provided, but in the region of the shaft is designed to widen in a V-shape up to the center of the hammer head. This also allows the pivoting process to be left in a targeted manner without the dangerous tilting of the hammer head occurring in the funnel.
- the invention additionally provides that the funnel of the retaining projections in the funnel deepest is adapted to the hammer head and is designed with contact surfaces such that pivoting or tilting of the hammer head screw is prevented when the tensioning element is tightened.
- the shape of the funnel is intended to ensure that the hammer head screw can still be simply inserted and swiveled in accordance with the requirements, but without tilting. This ensures an always secure fit when tightening the tensioning element in the funnel or in the funnel deepest.
- the contact and support surfaces are designed to enclose the hammer head ends and the arc surfaces lying between them.
- the reverse provision is made here for the entire hammer head to be securely stored in the deepest part of the funnel by making appropriate adjustments, whereby care must always be taken to ensure that the clamping element is pivoted about the longitudinal axis of the screw part is possible.
- pivoting about the longitudinal axis of the hammer head is avoided.
- a further expedient embodiment is that in which the funnel has the contact surfaces only shortly before the funnel is deepest, the corresponding attachment being arranged taking into account the “thickness” of the hammer head.
- the invention provides that the funnel is initially wide enough to facilitate the insertion of the hammer head screw or the tensioning element.
- the special shape of the funnel only surrounds the hammer head with or shortly before reaching the bottom of the funnel. This then ensures that it can be swiveled or, to be more precise, tilting security.
- the invention is characterized in particular by the fact that a scaffold coupling is created which is vibration-proof or has a secure hammer head screw, so that work can also be carried out under difficult conditions without the exact fit of each hammer head screw being examined separately. Rather, the hammer heads are provided with formations or contact surfaces which correspond to the funnel in the holding projection of the respective half-shell, so that the twisting or tilting of the hammer head in the funnel can be ruled out with the application of the collar nut.
- the contact surface is not only provided at the hammer head ends, but also in the attachment area of the shaft, i.e.
- 1 is a scaffold coupling with a half-shell defining a scaffold element and an open half-shell or a striker
- FIG. 3 is a plan view of a holding projection with a funnel
- FIG. 4 shows another embodiment of a scaffolding coupling with angled hammer head screw
- FIG. 7 shows a scaffold coupling, shown in section in the area of the funnel and with a seated hammer head, with specially designed contact surfaces and in particular an indentation in the area of the back of the hammer,
- Fig. 8 is a correspondingly trained hammer head screw in
- Fig. 10 seen the hammer head screw from the side with a top view of the hammer head and
- 11 is a plan view of the hammer head with a corresponding indentation
- Fig. 13 is a perspective representation of the scaffold coupling, in which the design of the funnel is again indicated or illustrated.
- Fig. 1 shows a scaffold coupling 1 partially in the tensioned or tensioned and once in the open state.
- Scaffold couplings 1 of this type are used to effectively connect scaffold elements 2 that are at an angle to one another or, more precisely, to fix them together.
- the half-shells 3, 4 are pivotally connected to one another by a bolt 5, a tensioning element 6 being provided on the side opposite the bolt in order to effectively fix the scaffolding element 2 via the tensioning element 6 after insertion.
- FIG. 1 Another half shell 7, which is referred to as a locking bracket 8 and which also serves to enclose the scaffolding element (not shown here) in the composite, is again pivotally connected to the half shell 4.
- a hammer head screw 10 is used as the clamping element 6, which has a hammer head 12 that can be fixed on the retaining projection 11, this hammer head 12 of the hammer head screw 10 ensuring sufficient pivotability that the respective scaffolding element 2 is inserted into the remaining one when the half-shell 3 is open or can be inserted into the specifically kept open opening.
- the half-shell 3 is moved around the bolt 5 onto the half-shell 4 and the hammer-head screw 10 is thus pivots that the shaft 13 with the thread 14 and the collar nut 15 can be inserted into the fork-shaped end piece 16 of the half-shell 3. Then the collar nut 15 is screwed on until it moves on the thread 14 to the corresponding surfaces of the fork-shaped end piece 16 of the striker 8.
- the scaffolding element 2 is then clamped in without the need for straightening or the like, because, as explained further, the hammer head 12 is effectively fixed in the funnel 26.
- Such a fixing of the hammer head 12 in the funnel 26 is possible because the hammer head 12 at the hammer head ends 17, 18 has formations 20, 21, which ensure the effective setting when inserting the hammer head 12 into the funnel 26. Formations 22 are also provided in the area of the hammer back 23, so that an arc-shaped hammer back 23 results, which also ensures optimal stability of the hammer head 12 in the special embodiment of the formations 20, 21 described further below.
- Figure 2 and further behind also Figure 5 illustrate that in addition to the projections 20, 21 also in the region of the shaft 13, namely in the attachment area 29, projections 24 are provided on both sides. These projections 24 extend beyond the wall 31 of the receiving recess 25, so that the shaft 13 and thus the entire hammer head screw in the funnel can no longer be rotated or pivoted, so that tilting or inclining the hammer head in the funnel is excluded.
- the projections 20, 21 and also 24 are designed in such a way that flat contact surfaces 27 and 28 result, which secure the fixing of the hammer head 12 or shaft 13 described above, so that the hammer head is inserted obliquely
- FIG. 2 shows such a hammer head screw 10 with the newly created contact surfaces 27, 28 and also 30. It can also be seen here that the contact surfaces 27 or the flat projections 20, 21 are designed in such a way that they form or develop towards the shaft 13 result in bevels running in this direction.
- the hammer head screw 10 is inserted into the funnel 26 and thereby into the receiving recess 25, the entire hammer head 12 is secured in the funnel 26.
- the support surface 32 comes to lie on the support surface 33, so that an optimal position for the scaffolding engineer can be recognized, into which he expediently swings the hammer head screw back when he has inserted the scaffolding element 2 and now through Unscrewing the collar nut 15 on the thread 14 wants to achieve a bracing of the scaffold element 2.
- FIGS. 4 and 5 show a scaffold coupling which corresponds in principle to that according to FIGS. 1 to 3, only that an oblique hammer head screw 10 is used here because the half-shell 3 is shorter than in the embodiment according to FIG.
- FIG. 5 additionally shows the projections 20, 21 and also 22 and 24 that are used, for example, in the hammer head screw 10, which in turn produce the desired contact surfaces 27, 28, which ensure that the hammer head screw 10 is securely seated in the funnel 26.
- FIG. 6 shows a scaffold coupling 1 in use for connecting two winch mutually extending scaffolding elements 2, 2 '.
- the one of the two hammer head screws 10 used has a hammer head 12 which sits obliquely in the funnel 26 and thus in such a way that it can slip into the correct seat during a shaking or sudden movement, but then no longer one secure fixation of the scaffold element 2 'secures.
- a hammer head 12 is used which has spherical hammer ends 17, 18. These spherical hammer ends 17, 18 are advantageous for pivoting the hammer head screw 10 in the funnel 26, but can, as shown in FIG. 6, lead to a dangerous position of the hammer head 12.
- FIG. 7 shows a scaffold coupling 1 in which a scaffold element 2 is accordingly already clamped in by the two upper half-shells 3 and 4. This is done with the help of the only partially recognizable hammer head screw 10, in which the collar nut 15 is already tightened with the collar 19.
- the further half-shell 7 is also already fixed with the aid of the hammer head screw 10 ', the seat of the hammer head 12 in the funnel 26 being recognizable by the cut in the holding projection 11'.
- the hammer head 12 has quasi-stepped contact surfaces 27 at the hammer head ends 17, 18. More on this is explained further below.
- the contact surfaces 28 in the region of the shaft 13 are also particularly easy to insert because the corresponding edges are chamfered or bevelled. This is particularly clear from Figure 9.
- the hammer head back 23 is equipped with an indentation 48 in order to facilitate the insertion of the scaffolding element 2 and also to make it possible if for some reason the hammer head 12 cannot be pushed far enough into the funnel 26.
- 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 tube can also possibly 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.
- FIG. 10 shows the configurations of the bevel 38, the perpendicular 39 and the long bevel 40, in the region of the hammer head ends 17, 18, the insertion into the funnel 26 through the bevels 44, 45, 45 'or the edges 42, 43 already mentioned , 43 'is favored.
- FIG. 11 shows a top view of the hammer back 23 of the hammer head 12, the trough-shaped indentation 48 being recognizable and also the formation of the bevels 38 at the hammer head ends 17 and 18.
- flats 47 are provided at the corners of the hammer head 12, so that an overall optimally applicable and fixable hammer head 12 results.
- FIGS. 12 and 13 The design of the scaffold coupling, according to which the funnel 26 in the retaining projections 11 is adapted to the shape of the hammer head 12, is illustrated in FIGS. 12 and 13.
- the funnel 26 is shown and illustrates that the funnel-deepest 55 in particular is adapted to the hammer head 12 so that contact surfaces 27 'result. Since the continuation of the funnel deepest, which is indeed open, through the shaft 13 of the hammer head screw allow, is provided with a contact surface 28 ', the desired securing of the tensioning element 6 in the funnel 26 or the holding projections 11 is obtained.
- the deepest funnel 55 is then also adapted to the curved surfaces 56, so that there are targeted contact surfaces 32'.
- the funnel 26 has lugs 58 in the direction of the funnel deepest 55, from which the adaptation to the hammer head 12 then takes place, i. H. Only from here are the contact surfaces 27 ', 32' specified in order to specifically facilitate the insertion of the hammer head screw, but also the loosening of the hammer head screw.
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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)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU64644/99A AU6464499A (en) | 1998-08-21 | 1999-08-12 | Scaffold coupling element with a secure-sitting head bolt |
DE59904653T DE59904653D1 (de) | 1998-08-21 | 1999-08-12 | Gerüstkupplung mit sitzsicherer hammerkopfschraube |
AT99952409T ATE234984T1 (de) | 1998-08-21 | 1999-08-12 | Gerüstkupplung mit sitzsicherer hammerkopfschraube |
EP99952409A EP1105595B1 (de) | 1998-08-21 | 1999-08-12 | Gerüstkupplung mit sitzsicherer hammerkopfschraube |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19837970 | 1998-08-21 | ||
DE19837970.6 | 1998-08-21 | ||
DE19926231A DE19926231A1 (de) | 1998-08-21 | 1999-06-10 | Gerüstkupplung mit sitzsicherer Hammerkopfschraube |
DE19926231.4 | 1999-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000011284A1 true WO2000011284A1 (de) | 2000-03-02 |
Family
ID=26048312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/002557 WO2000011284A1 (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) |
Citations (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 WO PCT/DE1999/002557 patent/WO2000011284A1/de active IP Right Grant
- 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 AT AT99952409T patent/ATE234984T1/de not_active IP Right Cessation
Patent Citations (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 |
Also Published As
Publication number | Publication date |
---|---|
EP1105595B1 (de) | 2003-03-19 |
ATE234984T1 (de) | 2003-04-15 |
EP1105595A1 (de) | 2001-06-13 |
AU6464499A (en) | 2000-03-14 |
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