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WO2001029339A1 - Connection node in a spatial structure - Google Patents

Connection node in a spatial structure Download PDF

Info

Publication number
WO2001029339A1
WO2001029339A1 PCT/BR2000/000113 BR0000113W WO0129339A1 WO 2001029339 A1 WO2001029339 A1 WO 2001029339A1 BR 0000113 W BR0000113 W BR 0000113W WO 0129339 A1 WO0129339 A1 WO 0129339A1
Authority
WO
WIPO (PCT)
Prior art keywords
bolt
sphere
strut
rod
mentioned
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.)
Ceased
Application number
PCT/BR2000/000113
Other languages
French (fr)
Inventor
Jorge Peronne Dos Reis Filho
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2001029339A1 publication Critical patent/WO2001029339A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B1/1903—Connecting nodes specially adapted therefor
    • E04B1/1906—Connecting nodes specially adapted therefor with central spherical, semispherical or polyhedral connecting element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1924—Struts specially adapted therefor
    • E04B2001/1927—Struts specially adapted therefor of essentially circular cross section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19—Three-dimensional framework structures
    • E04B2001/1957—Details of connections between nodes and struts
    • E04B2001/196—Screw connections with axis parallel to the main axis of the strut

Definitions

  • the node that joints the converging rods in a same point can be made of a group of welded plane plates with drilled holes to fix the rods by bolt.
  • connection node which technology is called "PALC- Spanish" or
  • the sphere is a hollow one having an opening through which a bolt is placed. Once the rod is positioned against the sphere and the nut is lined up with one of existing drilled holes, a bolt is placed from inside the sphere and screwed to the nut than joining and fixing the rod to the sphere.
  • This system requires placing and handling bolts in a confined place such as this one - inside a hollow sphere - limiting the number of structural rods that converge to
  • connection nodes as described in PI 9601357-5 and PI 9605088-8, have two struts to connect the rods to the sphere.
  • the female strut is called “screwed flange” and the male strut is called “coupling"
  • a segment of the female strut has the shape of a screw, which is previously screwed to the sphere body, having walls with a transversal hole in which the male strut is coupled.
  • the male strut is fixed to the rod having a wall with a transversal hole to couple the female strut by means of a pin
  • the bolt handling inside the sphere it enlarges the possibility of a greater number of converging rods to the same sphere
  • Tools are not necessary and there's also no need to screw the bolt to the nut during the structure assembly, at the job site, the assembling of each rod to the sphere is completed placing a transversal pin, which ties the male strut to the female strut
  • the existing German connection node a well-known technology from MERO enterprise, consists of a hollow sphere with inner threaded radial holes
  • the rod has at both ends a bushing, a sleeve and a bolt
  • the bushing is fixed to the tubular rod, it has an axial hole in which a bolt is placed
  • the sleeve coupled at the bushing free end can freely rotate, it has the external shape of a truncated hexagonal prism, similar to a nut
  • the sleeve hole is also is also hexagonal
  • the bolt freely rotates inside the bushing, it has an axial displacement in a way that only its body can go out of the bushing
  • the bolt head stays permanently inside the bushing
  • the segment of the bolt near its end is externally threaded and couples itself to the sphere's threaded hole
  • the bolt central body segment has a hexagonal cross-section from the threaded segment to the bolt head, it fits into the sleeve hexagonal hole Position
  • connection node in this report hereby described has at the rod end a particular geometric shape stnit that allows fixing the rod to the sphere only by means of the bolt
  • This bolt is a standard one and can be found at the retail market Completed the assembling the set formed by the rod, stnit and the sphere becomes a rigid block with no relative motion among themselves
  • the bolt is placed inside the strut through one of the existing openings
  • Figure 1 shows a section of the assembled connection node frontal view having the sphere ( 1 ), the strut (2) with openings (3 ), the bolt (4) and the tubular rod (5)
  • Figure 2 shows a section of the assembled connection node exploded side view having the sphere ( 1 ) with threaded holes (6), the strut (2) with openings (3 ) and axial hole (7), the bolt (4) and the tubular rod (5)
  • Figure 3 shows a section of half the assembled connection node spatial view having the sphere ( 1 ), the strut (2), the openings (3), the bolt (4), the tubular rod (5), the threaded holes (6) in the sphere ( 1 ) wall and the axial hole (7) in the strut (2)
  • Figure 4 shows a longitudinal cut along tubular l od (5) axis from the assembled connection node spatial view having the sphere ( 1 ), the strut (2) with the openings (3), the bolt (4), the tubular rod (5) and the threaded holes (6) in the sphei e ( 1 )
  • Figure 5 shows a spatial view from the assembled connection node having the sphere ( 1 ) with its holes (6), the strut (2), the bolt (4) and the tubular rod (5)
  • the strut (2) is fixed in the tubular rod (5) while in the plant
  • Fixing the strut (2) to the tubular rod (5) can be done by means of seam welding, gluing or pressed adjustment with the help of a compressing sleeve as shown in Figure 1
  • the tubular rod is slightly deformed at its end getting conical alongside the tubular rod and getting a virole in the shape of a ring around the circular edge, which couples to the sleeve
  • the tubular rod (5) When the tubular rod (5) is pulled, it drags the sleeve than compressing a bit more the tubular rod against the strut
  • the tubular rod (5) is lined up with one of the sphere radial holes (6), than the bolt (4) is placed inside the strut (2) through the opening (3) Using a portable or hand tool one twists the bolt (4) head accomplishing the rod joining and fixing to the sphere
  • the bolt (4) to be used is a standard one, manufactured under common technical standards Being a bolt of standard dimensions the hand tools to tight the bolts are also available in the retail market

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

Connecting node in spatial structures having tubular structural rods (5) jointed to the sphere (1) with radial axis threaded holes (6); it uses hollow truncated cone struts (2) with openings (3) on the conical surface and axial hole (7) in the minor base, being the mentioned struts fixed to the rods (5) and jointed by bolt (4) to the sphere (1).

Description

CONNECTION NODE IN A SPATIAL STRUCTURE
Configuration of parts forming the jointing of converging rods in a sphere, which forms a node in a spatial structure.
Most spatial structures have screwed connections. The node that joints the converging rods in a same point can be made of a group of welded plane plates with drilled holes to fix the rods by bolt. There is also a node formed by a sphere with radial holes in which the rods are fixed Jointing and fixing the rod to the sphere is done by action of the bolt, which is lined up with the rod axis and centered with one of the sphere's radial hole. There is a connection node, which technology is called "PALC- Spanish" or
"Cabrini- Brazilian", having a nut at the end of the rod being both axis coincident. The sphere is a hollow one having an opening through which a bolt is placed Once the rod is positioned against the sphere and the nut is lined up with one of existing drilled holes, a bolt is placed from inside the sphere and screwed to the nut than joining and fixing the rod to the sphere. This system requires placing and handling bolts in a confined place such as this one - inside a hollow sphere - limiting the number of structural rods that converge to
the same sphere.
Another existing connection nodes, as described in PI 9601357-5 and PI 9605088-8, have two struts to connect the rods to the sphere. The female strut is called "screwed flange" and the male strut is called "coupling" A segment of the female strut has the shape of a screw, which is previously screwed to the sphere body, having walls with a transversal hole in which the male strut is coupled. The male strut is fixed to the rod having a wall with a transversal hole to couple the female strut by means of a pin As it is not necessary the bolt handling inside the sphere it enlarges the possibility of a greater number of converging rods to the same sphere Tools are not necessary and there's also no need to screw the bolt to the nut during the structure assembly, at the job site, the assembling of each rod to the sphere is completed placing a transversal pin, which ties the male strut to the female strut It has several parts specially the struts, the bolt and the pin that require during the manufacturing process operations as casting, machining, milling and drilling that take much more time to manufacture, need much more raw material, need much more machinery in the productive process, makes the structure sole weight bigger limiting its usage
The existing German connection node, a well-known technology from MERO enterprise, consists of a hollow sphere with inner threaded radial holes The rod has at both ends a bushing, a sleeve and a bolt The bushing is fixed to the tubular rod, it has an axial hole in which a bolt is placed The sleeve coupled at the bushing free end can freely rotate, it has the external shape of a truncated hexagonal prism, similar to a nut The sleeve hole is also is also hexagonal The bolt freely rotates inside the bushing, it has an axial displacement in a way that only its body can go out of the bushing The bolt head stays permanently inside the bushing The segment of the bolt near its end is externally threaded and couples itself to the sphere's threaded hole The bolt central body segment has a hexagonal cross-section from the threaded segment to the bolt head, it fits into the sleeve hexagonal hole Positioning the rod lined up with the sphere's hole and rotating the sleeve about its own axis accomplish field structure assembly Turning the sleeve turns also the bolt The bolt couples itself into the sphere's threaded hole and sets axially forward joining and fixing the rod to the sphere One can turn the sleeve manually or using a
portable tool externally to the sphere, to the rod and to the bushing in order to impute a twisting force to the sleeve external hexagonal shape This is a high structural efficiency solution It is not very much used in Brazil on account of its high costs It demands metallic parts - bushing, sleeve and bolt - having special geometric shapes, not standardized, and completely away of any collective technical standard Parts manufacturing requires many steps and different significant manufacturing procedures, it requires forging a bolt in which a segment is threaded and another one has a hexagonal cross-section, it requires a sleeve with a hexagonal shape hole The connection node in this report hereby described, has at the rod end a particular geometric shape stnit that allows fixing the rod to the sphere only by means of the bolt This bolt is a standard one and can be found at the retail market Completed the assembling the set formed by the rod, stnit and the sphere becomes a rigid block with no relative motion among themselves The bolt is placed inside the strut through one of the existing openings on its wall and than sci ewed in the sphere wall There isn't any nut or bolt inside the sphere A hand tool is used to twist the bolt, entering through one of the strut openings and directly acting on the bolt head
Figure 1 shows a section of the assembled connection node frontal view having the sphere ( 1 ), the strut (2) with openings (3 ), the bolt (4) and the tubular rod (5) Figure 2 shows a section of the assembled connection node exploded side view having the sphere ( 1 ) with threaded holes (6), the strut (2) with openings (3 ) and axial hole (7), the bolt (4) and the tubular rod (5)
Figure 3 shows a section of half the assembled connection node spatial view having the sphere ( 1 ), the strut (2), the openings (3), the bolt (4), the tubular rod (5), the threaded holes (6) in the sphere ( 1 ) wall and the axial hole (7) in the strut (2)
Figure 4 shows a longitudinal cut along tubular l od (5) axis from the assembled connection node spatial view having the sphere ( 1 ), the strut (2) with the openings (3), the bolt (4), the tubular rod (5) and the threaded holes (6) in the sphei e ( 1 )
Figure 5 shows a spatial view from the assembled connection node having the sphere ( 1 ) with its holes (6), the strut (2), the bolt (4) and the tubular rod (5) The strut (2) is fixed in the tubular rod (5) while in the plant Fixing the strut (2) to the tubular rod (5) can be done by means of seam welding, gluing or pressed adjustment with the help of a compressing sleeve as shown in Figure 1 In the pressed adjustment method the tubular rod is slightly deformed at its end getting conical alongside the tubular rod and getting a virole in the shape of a ring around the circular edge, which couples to the sleeve When the tubular rod (5) is pulled, it drags the sleeve than compressing a bit more the tubular rod against the strut
When the spatial structure is assembled at the job site, the tubular rod (5) is lined up with one of the sphere radial holes (6), than the bolt (4) is placed inside the strut (2) through the opening (3) Using a portable or hand tool one twists the bolt (4) head accomplishing the rod joining and fixing to the sphere
The connection node in this report hereby described, presents a reduced number of parts These parts have a prevailing cylindrical/conical geometric shape that simplifies the manufacturing process The bolt (4) to be used is a standard one, manufactured under common technical standards Being a bolt of standard dimensions the hand tools to tight the bolts are also available in the retail market
Besides presenting simplicity in manufacturing and less weight, it makes the structure assembling workmanship easy needing less specialized personnel

Claims

1- CONNECTING NODE IN SPATIAL STRUCTURES formed by structural rods jointed by bolts to a sphere, characterized by having at each structural rod (5) end only a strut (2) fixed in the mentioned rod (5) and the mentioned strut (2) jointed to the sphere (1 ) through bolt (4)
2- CONNECTING NODE IN SPATIAL STRUCTURES according to claim 1 , characterized by being the strut (2) a truncated cone shape part, hollow, with many openings (3) on the conical surface and having an axial hole (7) in the minor truncated cone base 3- CONNECTING NODE IN SPATIAL STRUCTURES according to claims 1 and 2, characterized by bolt (4) being placed inside the strut (2) through one of the openings (3) and being the mentioned bolt (4) tightened by means of a portable tool that actuate on the head of the mentioned bolt (4) through anyone of the mentioned openings (3)
PCT/BR2000/000113 1999-10-21 2000-10-17 Connection node in a spatial structure Ceased WO2001029339A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9904665A BR9904665A (en) 1999-10-21 1999-10-21 Connecting node in spatial structures
BRPI9904665-2 1999-10-21

Publications (1)

Publication Number Publication Date
WO2001029339A1 true WO2001029339A1 (en) 2001-04-26

Family

ID=4073689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2000/000113 Ceased WO2001029339A1 (en) 1999-10-21 2000-10-17 Connection node in a spatial structure

Country Status (2)

Country Link
BR (1) BR9904665A (en)
WO (1) WO2001029339A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2104529A1 (en) * 1971-02-01 1972-08-10 Gebrüder Mylaeus, 5970 Plettenberg Kit for creating spatial frameworks
DE2633147A1 (en) * 1975-12-08 1978-01-26 Abraham Endzweig CONNECTING DEVICE FOR FRAME PARTS

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2104529A1 (en) * 1971-02-01 1972-08-10 Gebrüder Mylaeus, 5970 Plettenberg Kit for creating spatial frameworks
DE2633147A1 (en) * 1975-12-08 1978-01-26 Abraham Endzweig CONNECTING DEVICE FOR FRAME PARTS

Also Published As

Publication number Publication date
BR9904665A (en) 2001-06-05

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