EP3617421B1 - Node coupler for attaching horizontal and diagonal bars to a vertical bar in a scaffolding system - Google Patents
Node coupler for attaching horizontal and diagonal bars to a vertical bar in a scaffolding system Download PDFInfo
- Publication number
- EP3617421B1 EP3617421B1 EP19188828.8A EP19188828A EP3617421B1 EP 3617421 B1 EP3617421 B1 EP 3617421B1 EP 19188828 A EP19188828 A EP 19188828A EP 3617421 B1 EP3617421 B1 EP 3617421B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- node connection
- horizontal
- hole formations
- plate
- receiving
- 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.)
- Active
Links
- 230000015572 biosynthetic process Effects 0.000 claims description 26
- 238000005755 formation reaction Methods 0.000 claims description 26
- 230000000284 resting effect Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
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
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/32—Scaffolding bars or members with non-detachably fixed coupling elements with coupling elements using wedges
-
- 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
-
- 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
- E04G7/22—Stiff scaffolding clamps for connecting scaffold members of common shape for scaffold members in end-to-side relation
-
- 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
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
-
- 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
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
- E04G7/304—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect with tying means for connecting the bars or members
-
- 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
- E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
- E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
- E04G7/306—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect
- E04G7/307—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are fixed at several bars or members to connect with tying means for connecting the bars or members
Definitions
- the present invention relates to a node connection for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system, the node connection comprising a cage mounted on the vertical strut and configured for receiving the fastening members of the horizontal and diagonal struts.
- coupling devices for joining structural parts as mentioned above are known wherein a cage arrangement located on the vertical structural part is used for receiving a hook means located on the horizontal structural part.
- structural parts in the form of wedge elements, for example, are used which are blown into the connection area in order to stiffen the connection.
- wedge element is a separate part which is not permanently attached or easily accessible during assembly of the coupling device.
- the insertion and removal of the wedge element into/from the coupling device may be difficult, hence presenting a great challenge for the operator.
- EP 3315691 A1 discloses a system comprising a first head, with a horizontal slot and a vertical passage and at least one plate with an annular body having central hole and a plurality of holes for connection of the head.
- CA 2297148 A1 discloses a discoid, substantially circular holding device, fitted with holes into which scaffold elements can be fixed.
- WO 85/01976 A1 describes a generally cylindrical mounting formation, located substantially wholly within a cylindrical envelope containing the elongate portion of a diagonal brace.
- DE 8806128U1 describes a coupling device with a coupling head having a cross hole and a cross plugg that can be inserted in the cross hole.
- An object of the present invention is to provide a node connection for attaching horizontal and diagonal struts to a vertical strut preferably in a scaffolding system, the node connection being designed so as to be adapted for use with most major scaffolding types such as spire scaffolding, frame scaffolding, rolling scaffolding, stair towers, framework for tarpaulin covering, tents, plastic halls and support/formwork.
- most major scaffolding types such as spire scaffolding, frame scaffolding, rolling scaffolding, stair towers, framework for tarpaulin covering, tents, plastic halls and support/formwork.
- Another object of the present invention is to provide a coupling device that is reliable and stable and provides a rigid interconnection.
- Another object is that an operator shall be able to assemble the coupling in a simple and quick manner.
- the coupling device shall not be comprised of detached structural parts. Each structural part needed shall be bound to the structural parts to be assembled so that the operator does not have to spend time locating unattached elements during assembly.
- the coupling shall allow for a simple and quick disassembly. This applies in particular to the removal of the wedge element, which may often present a great challenge to the operator.
- a node connection for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system according to claim 1.
- a node connection 1 is shown used in the joining of horizontal struts 350 to a vertical strut 40 in a scaffolding system.
- the vertical strut 40 has a cage in the form of a circular rim plate 5 mounted thereon.
- the horizontal strut 50 with fastening members 51 is shown fixedly mounted or locked to rim plate 5 so that a reliable and stable node connection is obtained.
- Rim plate 5 is also shown to include additional hole formations 9 for receiving any fastening members of other systems.
- the rim plate 5 is shown with its characteristic form having an inner circumference 5a surrounding the vertical strut 40 and a wavy outer circumference 5b.
- the above-indicated hole formation 9 for receiving other types of systems is shown.
- the hole formations 9 are formed in such a manner that fastening members of other systems can also be used in said hole formations, providing flexibility with respect to use with other systems.
- the rim plate 5 shown has eight hole formations 8, 9 adapted so as to be useable with fastening members of most existing scaffolding systems etc.
- Said eight hole formations 8, 9 include four first hole formations 8 and four second hole formations 9, with the first and second hole formations 8, 9 being different from one another.
- Said first four hole formations 8 and four second hole formations 9, respectively, are offset 90 degrees from each other.
- Said four first and four second hole formations 8, 9 are offset 45 degrees from each other.
- rim plates 5 will be mounted to the vertical strut 40 with a spacing of preferably 0.5 meters. Normally, rim plate 5 will have a thickness of preferably 10-15 millimetres.
- Figs. 4a-d show the fastening member 51 fitted to the horizontal strut 50.
- Fastening member 51 has a generally C-profile configuration comprised by a web plate 52 with a fixed upper flange plate 53 and an articulated lower flange plate 60.
- the upper and lower flange plates 53, 60 are provided with slit openings 54, 61 for receiving a wedge body 70.
- Fig. 4a shows fastening member 51 in a resting position in which wedge body 70 of the fastening member is in a resting position in a groove in the upper region of vertical strut 50.
- the shaft 82 is movably mounted to wedge body 70, whereby, when the fork device 80 impacts the rim plate 5 during insertion, the wedge body 70 is moved from a horizontal resting position over upper flange plate 53 to a vertical locking position in which fastening member 51 is locked to rim plate 5. Hence, when inserted around the rim plate, fastening member 51 will automatically lock thereto.
- the wedge 70 may be given a light blow at the upper end thereof. During disassembly of the node connection the lower end of the wedge can be given a light blow using a hammer, which will loosen and push the wedge upwardly, after which wedge 5 can be pulled up and laid back into the resting position.
- the cage according to the invention is shown mounted on a vertical strut and used with fastening members of a different scaffolding system.
- the hole formations 9 of rim plate 5 are used and a stable and reliable connection is obtained.
- Fig. 7 shows, with arrows, the hole formations 9 for receiving the fastening members of this system.
- the node connection 1 has a wide area of application as it can also be used in connection with a large number of existing systems. Moreover, through the use of the disclosed fastening member 51, a simple and time-saving "automatic" locking between the rim plate and strut will be achieved with no detached structural parts.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Ladders (AREA)
Description
- The present invention relates to a node connection for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system, the node connection comprising a cage mounted on the vertical strut and configured for receiving the fastening members of the horizontal and diagonal struts.
- Currently, coupling devices for joining structural parts as mentioned above are known wherein a cage arrangement located on the vertical structural part is used for receiving a hook means located on the horizontal structural part. In addition, structural parts in the form of wedge elements, for example, are used which are blown into the connection area in order to stiffen the connection.
- Typically, the prior art coupling devices of the above type are specially designed, intended for their unique scaffolding system only. Thus, a scaffolding system cannot be used together with different scaffolding systems.
- Another problem with the prior art solutions is that the wedge element is a separate part which is not permanently attached or easily accessible during assembly of the coupling device.
- Also, the insertion and removal of the wedge element into/from the coupling device may be difficult, hence presenting a great challenge for the operator.
-
EP 3315691 A1 discloses a system comprising a first head, with a horizontal slot and a vertical passage and at least one plate with an annular body having central hole and a plurality of holes for connection of the head.CA 2297148 A1 discloses a discoid, substantially circular holding device, fitted with holes into which scaffold elements can be fixed.WO 85/01976 A1 DE 8806128U1 describes a coupling device with a coupling head having a cross hole and a cross plugg that can be inserted in the cross hole. - An object of the present invention is to provide a node connection for attaching horizontal and diagonal struts to a vertical strut preferably in a scaffolding system, the node connection being designed so as to be adapted for use with most major scaffolding types such as spire scaffolding, frame scaffolding, rolling scaffolding, stair towers, framework for tarpaulin covering, tents, plastic halls and support/formwork. Hence, the different systems shall be useable together with each other in different load classes and for different purposes.
- Another object of the present invention is to provide a coupling device that is reliable and stable and provides a rigid interconnection.
- Another object is that an operator shall be able to assemble the coupling in a simple and quick manner.
- Moreover, the coupling device shall not be comprised of detached structural parts. Each structural part needed shall be bound to the structural parts to be assembled so that the operator does not have to spend time locating unattached elements during assembly. A further object is that the coupling shall allow for a simple and quick disassembly. This applies in particular to the removal of the wedge element, which may often present a great challenge to the operator.
- The objects of the present invention are achieved by a node connection for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system according to
claim 1. - Preferred embodiments of the node connection are set forth with more particularity in claims 2 through 8.
- The present invention will now be explained in more detail with reference to the accompanying drawings, in which:
-
Fig. 1 shows a perspective view of an embodiment of a node connection according to the invention for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system. -
Fig. 2 shows the node connection in a top view, -
Fig. 3 shows the cage to be mounted on the vertical rod, -
Figs. 4a-d show a horizontal strut having a fastening member according to the invention in the various positions, i.e. from the resting to locking positions, -
Fig. 5 shows a perspective view of the cage used for receiving fastening members of another existing scaffolding system, -
Fig. 6 shows the node connection ofFig. 5 in a top view, and -
Fig. 7 shows the cage ofFig. 5 in a top view. - Referring to
Figs. 1 and 2 , an embodiment of anode connection 1 is shown used in the joining of horizontal struts 350 to avertical strut 40 in a scaffolding system. Thevertical strut 40 has a cage in the form of acircular rim plate 5 mounted thereon. Thehorizontal strut 50 with fasteningmembers 51 is shown fixedly mounted or locked torim plate 5 so that a reliable and stable node connection is obtained.Rim plate 5 is also shown to includeadditional hole formations 9 for receiving any fastening members of other systems. - Referring to
Fig. 3 , therim plate 5 is shown with its characteristic form having aninner circumference 5a surrounding thevertical strut 40 and a wavyouter circumference 5b. The above-indicatedhole formation 9 for receiving other types of systems is shown. Also shown, with arrows, arehole formations 8 for receivingfastening member 51. Thehole formations 9 are formed in such a manner that fastening members of other systems can also be used in said hole formations, providing flexibility with respect to use with other systems. In the embodiment, therim plate 5 shown has eighthole formations hole formations first hole formations 8 and foursecond hole formations 9, with the first andsecond hole formations hole formations 8 and foursecond hole formations 9, respectively, are offset 90 degrees from each other. Said four first and foursecond hole formations rim plates 5 will be mounted to thevertical strut 40 with a spacing of preferably 0.5 meters. Normally,rim plate 5 will have a thickness of preferably 10-15 millimetres. -
Figs. 4a-d show thefastening member 51 fitted to thehorizontal strut 50. Fasteningmember 51 has a generally C-profile configuration comprised by aweb plate 52 with a fixedupper flange plate 53 and an articulatedlower flange plate 60. The upper andlower flange plates slit openings wedge body 70.Fig. 4a shows fasteningmember 51 in a resting position in whichwedge body 70 of the fastening member is in a resting position in a groove in the upper region ofvertical strut 50.Figs. 4b and 4c show the C-profile as it is inserted aroundrim plate 5, whereby thewedge body 70 is displaced from the resting position and passed throughupper flange plate 53,hole formation 8 ofrim plate 5, andlower flange plate 60, respectively, whereby the fastening member is locked torim plate 5 as shown inFig. 4d . In order to move thewedge body 70 from the resting position to the locking position the articulatedlower flange plate 60 is provided withgrooves 62 at the lateral edges thereof for receiving amovable fork device 80, where theshaft 82 of fork device extending through a longitudinal slit opening 52a of theweb plate 52. Theshaft 82 is movably mounted towedge body 70, whereby, when thefork device 80 impacts therim plate 5 during insertion, thewedge body 70 is moved from a horizontal resting position overupper flange plate 53 to a vertical locking position in which fasteningmember 51 is locked torim plate 5. Hence, when inserted around the rim plate, fasteningmember 51 will automatically lock thereto. Optionally, to further secure the connection, thewedge 70 may be given a light blow at the upper end thereof. During disassembly of the node connection the lower end of the wedge can be given a light blow using a hammer, which will loosen and push the wedge upwardly, after whichwedge 5 can be pulled up and laid back into the resting position. - Referring to
Figs. 5 and 6 , the cage according to the invention is shown mounted on a vertical strut and used with fastening members of a different scaffolding system. In this case, thehole formations 9 ofrim plate 5 are used and a stable and reliable connection is obtained.Fig. 7 shows, with arrows, thehole formations 9 for receiving the fastening members of this system. - The
node connection 1 has a wide area of application as it can also be used in connection with a large number of existing systems. Moreover, through the use of the disclosedfastening member 51, a simple and time-saving "automatic" locking between the rim plate and strut will be achieved with no detached structural parts.
Claims (8)
- A node connection (1) for attaching horizontal and diagonal struts (50) to a vertical strut (40) in a scaffolding system, the node connection (1) comprising fastening members (51) of the horizontal and diagonal struts, the node connection (1) further comprising a cage mounted on the vertical rod (40) and configured for receiving the fastening members (51) of the horizontal and diagonal struts, the cage taking the form of a generally circular rim plate (5) having an inner circumference (5a) surrounding the vertical rod (40) and a wavy/undulated outer circumference (5b) with a number of hole formations (8, 9) between the inner and outer circumferences (5a, 5b) for receiving the fastening members (51) of the various horizontal and vertical struts,
characterized in that the fastening members (51) of the horizontal and diagonal struts have a generally C-profile configuration comprised of a web plate (52) with an associated fixed upper flange plate (53) and an articulated lower flange plate (60), said upper and lower flange plates (53, 60) being provided with slit openings (54, 61) for receiving a wedge body (70), said articulated lower flange plate (60) being provided with grooves (62) at the lateral edges thereof for receiving a movable fork device (80), the shaft (82) of the fork device extending through a longitudinal slit opening (52a) of the web plate (52) and said shaft (82) being movably mounted to the wedge body (70), whereby, when the fork device (80) is introduced over and impacts the rim plate (5), said wedge body (70) will move from a horizontal resting position above the upper flange plate (53) to a vertical locking position in which said fastening member (51) is locked to the rim plate (5). - The node connection (1) of claim 1,
characterized in that the rim plate (5) has eight hole formations (8, 9). - The node connection (1) of claim 2,
characterized in that said eight hole formations (8, 9) comprise four first hole formations (8) and four second hole formations (9), said first and second hole formations (8, 9) being different from each other. - The node connection (1) of claim 3,
characterized in that said four first hole formations (8) are offset 90 degrees from each other. - The node connection (1) of claims 2 or 3,
characterized in that said four second hole formations 5 (9) are offset 90 degrees from each other. - The node connection (1) of claims 2-5,
characterized in that said four first and four second hole formations (8, 9), respectively, are offset 45 degrees from each other. - The node connection (1) of any one of the preceding claims,
characterized in that the rim plates (5) are mounted to the vertical strut (40) with a spacing of preferably 0.5 m. - The node connection (1) of any one of the preceding claims,
characterized in that the rim plate (5) has a thickness of preferably 10 to 15 mm.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20181030A NO345174B1 (en) | 2018-07-27 | 2018-07-27 | Node connection for attaching horizontal and diagonal struts to a vertical strut in a scaffolding system. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3617421A1 EP3617421A1 (en) | 2020-03-04 |
EP3617421B1 true EP3617421B1 (en) | 2021-09-01 |
Family
ID=67587382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19188828.8A Active EP3617421B1 (en) | 2018-07-27 | 2019-07-29 | Node coupler for attaching horizontal and diagonal bars to a vertical bar in a scaffolding system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3617421B1 (en) |
DK (1) | DK3617421T3 (en) |
NO (1) | NO345174B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202021104665U1 (en) * | 2021-08-30 | 2022-12-01 | Peri Se | Connecting disc for a scaffold |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3103470C2 (en) * | 1981-02-02 | 1984-01-19 | Udo 4836 Herzebrock Rose | Tubular steel frame |
WO1985001976A1 (en) * | 1983-11-05 | 1985-05-09 | Andras Szucs | Improvements relating to scaffolding and to braces for use in scaffolding |
DE8806128U1 (en) * | 1988-05-09 | 1988-07-28 | Rose, Udo, 4836 Herzebrock | Coupling device for bars of formwork scaffolds |
ES2014944A6 (en) * | 1989-09-11 | 1990-07-16 | Astigarraga Galfarsoro Salvado | A node for a recticular structure |
NO179877C (en) * | 1994-08-22 | 1997-01-08 | Alustar As | Device for diagonal rod attachment for scaffolding purposes |
DE19726950C2 (en) * | 1997-06-25 | 1999-12-23 | Plettac Ag | Rosette-shaped holding device for scaffolding elements |
US20060039746A1 (en) * | 2004-08-11 | 2006-02-23 | Stringer Matthew D | Connecting device for scaffolding |
FR2878273B1 (en) * | 2004-11-24 | 2007-02-23 | Comabi Snc | DEVICE FOR ASSEMBLING ELEMENTS OF A TUBULAR SCAFFOLDING |
US8303207B2 (en) * | 2010-01-26 | 2012-11-06 | Saferlte Platforms Inc | Hybrid scaffold system |
IT201600108828A1 (en) * | 2016-10-27 | 2018-04-27 | Amadio & C S P A | SYSTEM FOR CONNECTING VERTICAL UPRIGHTS AND CURRENTS SUPPORTING A FOOTBALL FLOOR FOR A CRAFTING |
-
2018
- 2018-07-27 NO NO20181030A patent/NO345174B1/en not_active IP Right Cessation
-
2019
- 2019-07-29 EP EP19188828.8A patent/EP3617421B1/en active Active
- 2019-07-29 DK DK19188828.8T patent/DK3617421T3/en active
Also Published As
Publication number | Publication date |
---|---|
DK3617421T3 (en) | 2021-12-06 |
NO345174B1 (en) | 2020-10-26 |
EP3617421A1 (en) | 2020-03-04 |
NO20181030A1 (en) | 2020-01-28 |
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