EP1077298A2 - Echafaudage - Google Patents

Echafaudage Download PDF

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Publication number
EP1077298A2
EP1077298A2 EP00202809A EP00202809A EP1077298A2 EP 1077298 A2 EP1077298 A2 EP 1077298A2 EP 00202809 A EP00202809 A EP 00202809A EP 00202809 A EP00202809 A EP 00202809A EP 1077298 A2 EP1077298 A2 EP 1077298A2
Authority
EP
European Patent Office
Prior art keywords
scaffolding
upright
scaffolding according
longitudinal member
tube
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.)
Withdrawn
Application number
EP00202809A
Other languages
German (de)
English (en)
Other versions
EP1077298A3 (fr
Inventor
Maurice Jean Robert Jansen
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.)
Corus Tubes BV
Original Assignee
Corus Tubes BV
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 Corus Tubes BV filed Critical Corus Tubes BV
Publication of EP1077298A2 publication Critical patent/EP1077298A2/fr
Publication of EP1077298A3 publication Critical patent/EP1077298A3/fr
Withdrawn legal-status Critical Current

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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
    • E04G7/22—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
    • E04G7/02—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
    • 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
    • E04G7/20—Stiff scaffolding clamps for connecting scaffold members of common shape for ends of members only, e.g. for connecting members in end-to-end 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
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/24—Couplings involving arrangements covered by more than one of the subgroups E04G7/08, E04G7/12, E04G7/20, E04G7/22

Definitions

  • the invention relates to a scaffolding comprising an upright which is suitable for erecting substantially vertically from a base, and a member which is suitable for connection to at least one above mentioned upright via a coupling means.
  • scaffolding Various types of scaffolding are known in practice, ranging, for example, from a straight scaffolding running along a building, used primarily for building new houses to a complex extension scaffolding around an industrial installation.
  • the group of scaffolding types can be subdivided into pipe-coupling scaffolding, system scaffolding and frame scaffolding.
  • the traditional scaffolding comprises seven groups of components:
  • the disadvantages are: heavy components, long erection time, separate couplings, the need to level longitudinal members, the risk of dropping loose components and the skill required for assembly and dismantling.
  • the system scaffolding comprises:
  • the uprights are provided with fixed coupling points, with the result that the flexibility is limited, limited travel of 0.5 m, coupling points increase the weight of the uprights, and additional space is taken up by the coupling points during storage.
  • the frame scaffolding comprises:
  • this type of scaffolding has at least 9 different constituent parts yet is still unable to assemble all types of scaffolding.
  • the disadvantages are: little flexibility, fixed tube lengths, fixed travel approx. 0.5 m, relatively expensive, large numbers of projecting parts, numerous length couplings associated with short lengths, impossibility of correcting skewed position of damaged components.
  • the object which the invention now seeks to achieve is to provide scaffolding which has a high level of flexibility, is lightweight and, in more general terms, is ergonomically satisfactory, is quick to erect and dismantle, all this combined with a favourable price-to-quality ratio. After all, however inexpensive the traditional scaffolding may be, it leaves much to be desired in terms of weight, erection speed and safety.
  • the scaffolding is characterised in that the coupling means comprises a clamping ring which can be removed from and arranged around the upright, on to which a first longitudinal member can be fitted, and connection means for releasably connecting a second longitudinal member to the clamping ring.
  • the scaffolding has a high level of flexibility; the height at which the clamping ring is fitted can be selected freely.
  • the coupling means comprises a clamp, which is suspended in the clamping ring and can rotate about an axis which, in normal operation, runs substantially vertically, for clamping in a first longitudinal member which can be fitted through it.
  • the distance between the uprights in the longitudinal direction can be varied substantially: if the uprights are close together, the longitudinal member is, as it were, pushed a great distance through the clamp and the longitudinal member extends into the scaffolding at an angle.
  • the uprights may also be set apart at any distance which is shorter than the length of the longitudinal member.
  • connection means comprise a substantially annular thickened section on the clamping ring.
  • connection means comprise a clamping jaw at or in the vicinity of one end of a longitudinal member.
  • a longitudinal member with a clamping jaw engages around the annular thickened section of the clamping ring in order, in this way, to fix it in the longitudinal direction.
  • the scaffolding also comprises a cross-member which is suitable for fixing an upright in the transverse direction and is suitable for connection to at least one upright via the coupling means
  • the scaffolding is characterised in that the coupling means comprises an intermediate piece which is suitable for interacting, on one side, with the clamping ring and is suitable for interacting, on another side with a cross-member, in which intermediate piece the clamp can be suspended.
  • the coupling means thus fulfils the coupling functions between the upright, the longitudinal member and the cross-member, the coupling to the upright being brought about by placing the clamping ring around the upright, the coupling to a first longitudinal member being brought about by a clamping jaw and clamping ring, the coupling to a second longitudinal member being brought about via a clamp through which the longitudinal member is fitted, which clamp can rotate about an axis which in the operating position is substantially vertically oriented, and the coupling of the said components to a cross-member being produced via an intermediate piece which can be coupled to the cross-member and is suitable for holding the rotatable clamp.
  • the fixed section of the clamping ring and the intermediate piece may be formed in one piece, for example as a casting.
  • the clamp is moveable in the intermediate piece, in the sense that it can also rotate about an axis which, during normal operation, is substantially horizontally oriented, running perpendicular to the longitudinal axis of the longitudinal member.
  • the upright, the cross-member and/or the longitudinal member are substantially formed from hollow tube with, as seen in cross section, measured diametrically to the outer edge, a largest dimension G, where G is greater than or equal to 50 mm and is less than or equal to 70 mm.
  • the scaffolding is characterised in that the upright is a round tube with an external diameter of between 55 and 60 mm, more preferably of approximately 57 mm.
  • the optimum rigidity, strength and manageability is achieved with the diameter of 57 mm referred to above.
  • this tube has a wall thickness of between 1.4 mm and 2.6 mm inclusive, more preferably between 1.6 mm and 2.0 mm inclusive, and optimally of approximately 1.8 mm.
  • An upright with a diameter of 57 mm and a wall thickness of approximately 1.8 mm and a length of approximately 4 metres weighs approximately 10 kg, i.e. considerably less than the approximately 15 kg which is the weight of an upright of the known scaffolding tube of the same length.
  • the scaffolding according to the invention is characterised in that the cross-member and/or the longitudinal member is/are formed substantially from hollow tube which is substantially rectangular in cross section.
  • the cross-members and longitudinal members are subjected to bending loads primarily in the vertical plane, and are scarcely subjected to any bending loads in the horizontal plane. Provided that the members are positioned correctly, it is therefore advantageous to differentiate between the rigidity and strength under bending loads in the two said planes and to provide a member which in the operating position is higher than it is wide, with the result that effectively the same functionality in terms of rigidity and strength are achieved, but at a lower weight.
  • the tube has a transverse profile with rounded sections with a rounding radius of at least 15 mm.
  • a tube of this nature is easy to pick up and is therefore eminently suitable not only in terms of weight but also in terms of ergonomics.
  • the uprights and/or the members are provided with indelible spacer marks which are used as reference.
  • the spacer marks are formed by noticeably indented points on the circumference of the uprights and/or the members.
  • the tube has alternating slot-shaped and round indentations at intervals of 125 mm, it is easy, during erection, to transpose a measurement on one upright or member to an opposite or adjacent upright or member.
  • a longitudinal member which is provided with an openable and closeable clamping jaw on one side, and for a clamping jaw with a fixed jaw part and a jaw part which can move about a rotation point, in which the moveable jaw part can be opened and closed by moving a driver member, for example and preferably a wedge, the driver member acting on a section of the moveable jaw part which is situated on that side of the rotation point which is remote from the jaw, and for a scaffolding tube provided with indelible spacer marks, all per se and as shown and described herein.
  • a driver member for example and preferably a wedge
  • Fig. 1 denotes an upright on which clamping ring 4 is supported.
  • Clamping ring 4 is connected to intermediate piece 7 in which clamp 5 is held in such a manner that clamp 5 can rotate about an axis which, during normal operation, is vertically oriented.
  • Clamp 5 holds the longitudinal member 3 which has been fitted through it in place.
  • the intermediate piece 7 is provided with a projection (not shown) which projects into, adjoins and is connected to cross-member 2.
  • the scaffolding is, for example, mirror-symmetrical, in which case the upright 1 is made from hollow round steel tube with a diameter of approximately 57 mm, and the uprights 2 and 3 are made from hollow steel tube with a flattened cross section, for example preferably with a height of 60 mm, a width of 30 mm, and rounded on the top and bottom sides with a rounding radius of 15 mm.
  • FIGS 2, 6 and 7 show a detailed view of a coupling according to the invention between upright 1, cross-member 2 and longitudinal member 3.
  • the various couplings between the upright and the members are fixed with the aid of wedges 8.
  • Upright 1 and clamping ring 4 are clamped together as a result of a pivoting clamping-ring part being fitted around the upright 1 and being pulled tight against a fixed clamping-ring part, the upright 1 being clamped inside the clamping ring 4 as a result of wedge 8 being driven in, which wedge fits into a bolt 11 which fits through the pivoting clamping-ring part and the fixed clamping-ring part.
  • Upright 1 and longitudinal member 3 are clamped together by placing the top jaw part 16 of clamping jaw 15,16 over the edge of the clamping ring 4 and closing the pivotable bottom jaw part 16 against the underside of the clamping ring 4, which is brought about by driving a wedge 8, which on that side of the pivot which is remote from the jaw fits through the top jaw part and interacts with the bottom jaw part, into the opening 17 against jaw part 16.
  • Cross-member 2 and longitudinal member 3 are clamped together by driving a wedge 8 between clamp 5 and a clamping member which is held in clamp 5 and acts on the longitudinal member 3.
  • Fig. 3 shows part of a steel upright 1 provided with reference marks 9 and 10, arranged at an interval of, for example, 125 mm, in the form of round and slot-shaped indentations 9,10. These marks 9,10, which may also be arranged on the members, facilitate fitting and measurement, so that assembly can be made more efficient.
  • the maximum length of the steel upright 1 is preferably 4 metres, and the external diameter is approximately 57 mm and the internal diameter approximately 53.4 mm.
  • Fig. 4 shows cross-member 2, also known as scaffolding pole 2, in an embodiment according to the invention in which a coupling comprising clamping ring 4 and intermediate piece 7 with rotatable clamp 5 fits into the cross-member 2 and is connected thereto.
  • Bolt 11 is provided with an opening for fitting through a wedge 8 in order to close the moveable part 14 of clamping ring 4.
  • the figure also shows a stop 12 for locking walkway planks which can be laid across the scaffold poles 2 against sideways displacement.
  • Fig. 5 denotes a section of the coupling which can be fitted into and arranged in the scaffold pole 2 which is substantially designed as a hollow tube.
  • the figure clearly illustrates how the moveable part 14 of the clamping ring can be fitted around an upright and clamped in place by fixing a wedge through the opening in bolt 11.
  • Fig. 6 shows how clamp 5 is held in the intermediate piece 7.
  • the coupling can be fitted into a cross-member 2 and can be connected thereto.
  • Fig. 7 shows a top and side view, in more detail, of the clamping jaw 6.
  • the clamping jaw has a top jaw part 15 and a projection 14, by means of which it can be attached to a member, for example a longitudinal member 3.
  • the bottom jaw part 16 is moved towards the top jaw part 15 by rotation about pivot 18, in the embodiment shown by fitting a wedge (not shown) through opening 17 from the top downwards, in such a manner that the active wedge surface imparts a closure movement to the bottom jaw part 16.
  • Figures 8, 9, 10, 11 and 12 show a scaffolding according to the invention of an alternative design wherein intermediate piece 7 is omitted.
  • Figures 8, 9 and 12 show the use of a diagonal member that can suitably be connected to an upright via a pivot and suitable clamping means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Movable Scaffolding (AREA)
EP00202809A 1999-08-19 2000-08-10 Echafaudage Withdrawn EP1077298A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1012857 1999-08-19
NL1012857A NL1012857C2 (nl) 1999-08-19 1999-08-19 Steiger.

Publications (2)

Publication Number Publication Date
EP1077298A2 true EP1077298A2 (fr) 2001-02-21
EP1077298A3 EP1077298A3 (fr) 2002-02-06

Family

ID=19769750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202809A Withdrawn EP1077298A3 (fr) 1999-08-19 2000-08-10 Echafaudage

Country Status (2)

Country Link
EP (1) EP1077298A3 (fr)
NL (1) NL1012857C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102439246A (zh) * 2009-05-27 2012-05-02 赖伯格洛纳尔迪控股有限公司 脚手架元件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB423146A (en) * 1934-04-24 1935-01-25 James Henry Bennetts Improvements in and connected with scaffolding and similar light structural work
US2770886A (en) * 1953-10-23 1956-11-20 Bruce W Johnson Ridge board holder
FR1204894A (fr) * 1958-10-15 1960-01-28 Construction métallique à trois éléments types
GB1367694A (en) * 1972-08-30 1974-09-18 Rushton K F Scaffolding
EP0004179A1 (fr) * 1978-03-07 1979-09-19 Scaffolding Components Limited Raccord pour échafaudage tubulaire
GB2236373A (en) * 1989-09-11 1991-04-03 Ulma S Coop A node for a recticular structure
US5411113A (en) * 1991-07-12 1995-05-02 Lubinski; Ronald Aluminum scaffold system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB423146A (en) * 1934-04-24 1935-01-25 James Henry Bennetts Improvements in and connected with scaffolding and similar light structural work
US2770886A (en) * 1953-10-23 1956-11-20 Bruce W Johnson Ridge board holder
FR1204894A (fr) * 1958-10-15 1960-01-28 Construction métallique à trois éléments types
GB1367694A (en) * 1972-08-30 1974-09-18 Rushton K F Scaffolding
EP0004179A1 (fr) * 1978-03-07 1979-09-19 Scaffolding Components Limited Raccord pour échafaudage tubulaire
GB2236373A (en) * 1989-09-11 1991-04-03 Ulma S Coop A node for a recticular structure
US5411113A (en) * 1991-07-12 1995-05-02 Lubinski; Ronald Aluminum scaffold system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102439246A (zh) * 2009-05-27 2012-05-02 赖伯格洛纳尔迪控股有限公司 脚手架元件
CN102439246B (zh) * 2009-05-27 2014-10-15 赖伯格洛纳尔迪控股有限公司 脚手架元件

Also Published As

Publication number Publication date
EP1077298A3 (fr) 2002-02-06
NL1012857C2 (nl) 2001-02-20

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