WO1988002426A1 - Suspension unit - Google Patents

Suspension unit Download PDF

Info

Publication number
WO1988002426A1
WO1988002426A1 PCT/AU1987/000335 AU8700335W WO8802426A1 WO 1988002426 A1 WO1988002426 A1 WO 1988002426A1 AU 8700335 W AU8700335 W AU 8700335W WO 8802426 A1 WO8802426 A1 WO 8802426A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
suspension unit
abutment
recess
hangers
Prior art date
Application number
PCT/AU1987/000335
Other languages
French (fr)
Inventor
David Mcintosh Taylor
Original Assignee
Alwyn Pty. Ltd.
McINTOSH TAYLOR CONSULTANTS PTY. LTD.
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 Alwyn Pty. Ltd., McINTOSH TAYLOR CONSULTANTS PTY. LTD. filed Critical Alwyn Pty. Ltd.
Publication of WO1988002426A1 publication Critical patent/WO1988002426A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/18—Means for suspending the supporting construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B3/00—Key-type connections; Keys

Definitions

  • This invention relates to a suspension unit, more particularly a suspension unit to suspend devices or units of electrical mechanical ceiling and finishing trades beneath a suspended structural concrete slab.
  • connection types including drilled and anchored bolts, either the mechanical or chemical anchorage types, and a few specialized mechanical devices which lock into the recessed ribs of the profile formed steel deck.
  • a suspension unit for locking to a structural member having a dovetail or shaped recess with an opening of lesser width than the main portion of the recess, said suspension unit comprising a pair of shaped hangers adapted to be individually inserted, into the recess and then moved to align with each other, and be joined to each other by suspensron means connected to said unit, wherein the combined shape of the hangers prevents the removal of the unit from the recess.
  • FIG. 1 is a view in cross-section of a typical ceiling or floor slab incorporating a profiled formed steel deck permanent formwork
  • FIG. 2 shows one form of the invention in side and end elevation
  • FIG. 3 shows the steps of insertion of the unit into the recess
  • FIG. 4 shows a further form of the invention
  • FIG. 5 shows two further forms of the invention
  • FIG. 6 shows three further forms of the invention
  • FIG. 7 shows a further form of the invention
  • FIG. 8 shows two further forms of the invention.
  • FIG. 1 of the drawings there is shown a portion of a typical ceiling or floor 1 having exposed profiled formed steel deck 2 thereon which acts as the permanent formwork for the concrete 3, a typical recessed rib 4 being shown In FlG. 1 (a) and a further form shown in FlG. 1 (b).
  • FIGS. 2 and 3 one form of the invention is shown which can comprise a plate 5 being formed at one end with an abutment 6 formed by bending over a rod 7, the end of the plate 8 being bent an d pressed against the surface of the body of the plate 5 to thus form the abutment portion 6 having a much greater width than the plate 5.
  • abutment 6 formed by bending over a rod 7
  • the end of the plate 8 being bent an d pressed against the surface of the body of the plate 5 to thus form the abutment portion 6 having a much greater width than the plate 5.
  • two plates are utilized, these being positioned in face to face relationship, one plate being inserted into the recess 4 and then the other plate 5 being positioned adjacent thereto and then by sliding the two plates together they are allowed to drop down into position, and the plates are then joined together by passing a fastening member such as a bolt or the like through the aligned apertures 9, this bolt or the like also attaching a further suspension means as desired.
  • a fastening member such as a bolt or the like
  • FIG. 4 shows a further form of the invention in which a pair of plates 10, preferably of an extruded form such as of aluminium are provided with apertures 11 and also a wedge shaped head portion 12.
  • the combined plates 10 have a width sufficient so that the inclined surfaces 14 engage in the recess 4 and thus do not tend to pull out of the opening in the recess 4.
  • FIG. 5 shows a further alternative of the invention where in example (a) the plates 10 are of extruded aluminium and also formed of sufficient width so that the combined width of the heads 12 is greater than the opening 4.
  • the plate 15 is formed with a generally rectangular head 16 extending from one side of the plate, the head being joined by a tapered portion 17 to join with the edge of the plate 15 as shown in example (c) the corner 18 joined at the junction of the surface 16 and 17 engaging in the wall of the recess 4 at point contact at a distance greatly spaced from the lower edge of the recess 4 this being at a distance where greater strength is achieved by there being a greater amount of concrete below the point of contact to give increased strength and load resistance.
  • FIG. 6 shows a very simple form of the unit which comprises a plate 19 having a right angled leg 20 which would engage on the internal inclined surface of the recess 4.
  • This form of unit would only be suitable for very light loads.
  • the form illustrated in FIG. 6 (b) shows two plates 21 each having a divergent portion 22 and a horizontal portion 23 again which are adapted to be individually inserted into the recess and then moved to be aligned, the two portions 23 engaging each other and thus provide greater strength, this form of unit providing great strength by applying a pressure all along the inclined surfaces, the unit tending to fail only by the upper leg 23 deforming upwardly with the lower leg 23 deforming downwardly.
  • FIG. 6 (c) shows a further form of the invention similar to that in FIG. 6 (b) where the horizontal portion 23 instead of being overlapped are each bent upwardly in a further extending portion 24 parallel to the main portion 21, this unit also being suitable for relatively light loads.
  • FIG. 7 shows a still further form of the invention, the plate 25 having a head 26, only one of the required plates being shown.
  • the plate may be formed of any suitable material having the required tensile strength.
  • a metal cap 27 can be clipped over the head 26, the cap having ribs 28 which clip into grooves 29 on the head. It will be realized that the plates 25 may be used without the cap if desired.
  • FIG. 8 there is shown a still further form of the invention which can be pressed or stamped out of a sheet of metal, or formed from any suitable material.
  • the plate 30, at its end to form the head 31 as shown in FIG. 8 (b), is formed by a vertical cut 32 and a horizontal cut 33, the horizontal cut 33 terminating at the cut 32, the cuts being spaced so that the flap 34 can be folded at right angles, along the line 35 to the plate to form the head.
  • FIG. 8 (c) shows a further form where a T-shaped cut is made, the head of the T being at 36, and the stem of the T separating the two flaps 37 which are then folded about fold lines 38.
  • the units may be manufactured by roll forming, plate welding, extrusion or stamping and folding. The overall dimensions are adjusted to suit the load requirements, and for heavier loads it is a simple matter for the individual units to have their length extended, and this length can be as long as desired.
  • the unit consists of two basic plates individually slipped into the recess at adjacent positions along the recessed ribs and subsequently slid together to align the holes of the plates, which are restricted from pulling down out of the recess due to the interaction of the opposed shapes of the tops of the plates with the profile of the recess. It is a simple matter to move the combined plates along the recess for particular adjustment at any time.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

A suspension unit for locking into a dovetail recess (4) in the permanent formwork of a concrete member (3). The unit comprises a pair of plates (5) having abutments (6), the plates being individually inserted into the recess and then slid along the recess to be in overlapped condition, the combined abutments preventing the withdrawal of the plates.

Description

SUSPENSI ON UNIT
This invention relates to a suspension unit, more particularly a suspension unit to suspend devices or units of electrical mechanical ceiling and finishing trades beneath a suspended structural concrete slab.
BACKGROUND OF THE INVENTION
The building construction industry has for many years been using profile formed steel decking as soffit permanent formwork and reinforcement for suspended structural concrete slabs for floors and roofs.
The following trades, including electrical and mechanical, and ceiling and finishing trades all require to connect to the soffit (underside) of this structural slab.
It is known that a wide variety of connection types have been used, including drilled and anchored bolts, either the mechanical or chemical anchorage types, and a few specialized mechanical devices which lock into the recessed ribs of the profile formed steel deck.
It is an object of this invention to provide a suspension unit which would anchor into the underside of the slab by interlocking into the recessed rib of the profile formed deck.
It is a further object to provide a suspension unit which may be made in a variety of dimensions and consequently to a variety of load carrying capacities.
It is a further object to provide a suspension unit which is economic for manufacture, very quick to install, and requires no power tools or technical trade expertise.
BRIEF STATEMENT OF THE INVENTION
Thus there is provided according to the invention, a suspension unit for locking to a structural member having a dovetail or shaped recess with an opening of lesser width than the main portion of the recess, said suspension unit comprising a pair of shaped hangers adapted to be individually inserted, into the recess and then moved to align with each other, and be joined to each other by suspensron means connected to said unit, wherein the combined shape of the hangers prevents the removal of the unit from the recess.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to more fully describe the invention reference will now be made to the accompanying drawings in which :
FIG. 1 is a view in cross-section of a typical ceiling or floor slab incorporating a profiled formed steel deck permanent formwork,
FIG. 2 shows one form of the invention in side and end elevation,
FIG. 3 shows the steps of insertion of the unit into the recess, FIG. 4 shows a further form of the invention,
FIG. 5 shows two further forms of the invention, FIG. 6 shows three further forms of the invention,
FIG. 7 shows a further form of the invention, and
FIG. 8 shows two further forms of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIG. 1 of the drawings, there is shown a portion of a typical ceiling or floor 1 having exposed profiled formed steel deck 2 thereon which acts as the permanent formwork for the concrete 3, a typical recessed rib 4 being shown In FlG. 1 (a) and a further form shown in FlG. 1 (b).
Referring to FIGS. 2 and 3, one form of the invention is shown which can comprise a plate 5 being formed at one end with an abutment 6 formed by bending over a rod 7, the end of the plate 8 being bent an d pressed against the surface of the body of the plate 5 to thus form the abutment portion 6 having a much greater width than the plate 5. As shown in FIG. 2, two plates are utilized, these being positioned in face to face relationship, one plate being inserted into the recess 4 and then the other plate 5 being positioned adjacent thereto and then by sliding the two plates together they are allowed to drop down into position, and the plates are then joined together by passing a fastening member such as a bolt or the like through the aligned apertures 9, this bolt or the like also attaching a further suspension means as desired.
FIG. 4 shows a further form of the invention in which a pair of plates 10, preferably of an extruded form such as of aluminium are provided with apertures 11 and also a wedge shaped head portion 12. In this instance the combined plates 10 have a width sufficient so that the inclined surfaces 14 engage in the recess 4 and thus do not tend to pull out of the opening in the recess 4.
FIG. 5 shows a further alternative of the invention where in example (a) the plates 10 are of extruded aluminium and also formed of sufficient width so that the combined width of the heads 12 is greater than the opening 4.
As shown in FIG. 5 (b) and (c) the plate 15 is formed with a generally rectangular head 16 extending from one side of the plate, the head being joined by a tapered portion 17 to join with the edge of the plate 15 as shown in example (c) the corner 18 joined at the junction of the surface 16 and 17 engaging in the wall of the recess 4 at point contact at a distance greatly spaced from the lower edge of the recess 4 this being at a distance where greater strength is achieved by there being a greater amount of concrete below the point of contact to give increased strength and load resistance.
Turning now to FIG. 6, (a) shows a very simple form of the unit which comprises a plate 19 having a right angled leg 20 which would engage on the internal inclined surface of the recess 4. This form of unit would only be suitable for very light loads. The form illustrated in FIG. 6 (b) shows two plates 21 each having a divergent portion 22 and a horizontal portion 23 again which are adapted to be individually inserted into the recess and then moved to be aligned, the two portions 23 engaging each other and thus provide greater strength, this form of unit providing great strength by applying a pressure all along the inclined surfaces, the unit tending to fail only by the upper leg 23 deforming upwardly with the lower leg 23 deforming downwardly.
FIG. 6 (c) shows a further form of the invention similar to that in FIG. 6 (b) where the horizontal portion 23 instead of being overlapped are each bent upwardly in a further extending portion 24 parallel to the main portion 21, this unit also being suitable for relatively light loads.
FIG. 7 shows a still further form of the invention, the plate 25 having a head 26, only one of the required plates being shown. The plate may be formed of any suitable material having the required tensile strength. In order to strengthen the head 26, a metal cap 27 can be clipped over the head 26, the cap having ribs 28 which clip into grooves 29 on the head. It will be realized that the plates 25 may be used without the cap if desired.
Referring to FlG. 8, there is shown a still further form of the invention which can be pressed or stamped out of a sheet of metal, or formed from any suitable material.
The plate 30, at its end to form the head 31 as shown in FIG. 8 (b), is formed by a vertical cut 32 and a horizontal cut 33, the horizontal cut 33 terminating at the cut 32, the cuts being spaced so that the flap 34 can be folded at right angles, along the line 35 to the plate to form the head.
FIG. 8 (c) shows a further form where a T-shaped cut is made, the head of the T being at 36, and the stem of the T separating the two flaps 37 which are then folded about fold lines 38. Thus as shown the units may be manufactured by roll forming, plate welding, extrusion or stamping and folding. The overall dimensions are adjusted to suit the load requirements, and for heavier loads it is a simple matter for the individual units to have their length extended, and this length can be as long as desired.
Thus in all examples the unit consists of two basic plates individually slipped into the recess at adjacent positions along the recessed ribs and subsequently slid together to align the holes of the plates, which are restricted from pulling down out of the recess due to the interaction of the opposed shapes of the tops of the plates with the profile of the recess. It is a simple matter to move the combined plates along the recess for particular adjustment at any time.
Although various forms of the invention have been described in some detail it is to be realized that the invention is not to be limited thereto but can include various modifications falling within the spirit and scope of the invention.

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A suspension unit for locking to a structural member having a dovetail or shaped recess with an opening of lesser width than the main body of the recess, said suspension unit comprising a pair of hangers having an abutment adapted to be individually inserted into the recess and then moved to align with each other, said hangers being joined to each other by suspension means connected to said aligned hangers, wherein the combined shape of the hangers in the recess prevents the removal of the combined hangers from the recess.
2. A suspension unit as defined in claim 1, wherein each of said hangers comprises a plate, said abutment being positioned on one side of said plate at one end thereof, said ptates being inserted with the other sides of said plates in contact with each other.
3. A suspension unit as defined in claim 2, wherein said abutment comprises the said end of said plate folded over a rod.
4. A suspension unit as defined in claim 2, wherein said plate is extruded and said abutment is formed during said extrusion of said plate.
5. A suspension unit as defined in claim 2, wherein said abutment comprises a leg formed by bending the plate at right angles to the plane of the plate.
6. A suspension unit as defined in claim 2, wherein said abutment comprises the plate .naving a portion extending at an acute angle to the plane of the plate, and a leg extending at right angles to the plate, so that when inserted the legs of adjacent plates overlap.
7. A suspension unit as defined in claim 2, wherein the abutment comprises a portion of the plate extending at an acute angle to the plane of the plate, a leg extending at right angles to the plane of the plate, and a lip extending from the leg in the plane of the plate so that when inserted the lips of each plate engage each other.
8. A suspension unit as defined in claim 4, wherein said abutment is fitted with a protective metal cap.
9. A suspension unit as defined in claim 2, wherein said abutment is formed by cutting the plate to form flaps which are folded to be at right angles to the plate and extend from one side of said plate.
10. A suspension unit substantially as hereinbefore described and as illustrated in the accompanying drawings.
PCT/AU1987/000335 1986-09-30 1987-09-30 Suspension unit WO1988002426A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPH8251 1986-09-30
AU825186 1986-09-30

Publications (1)

Publication Number Publication Date
WO1988002426A1 true WO1988002426A1 (en) 1988-04-07

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Family Applications (1)

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PCT/AU1987/000335 WO1988002426A1 (en) 1986-09-30 1987-09-30 Suspension unit

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642556A1 (en) * 1989-02-01 1990-08-03 Castanie Gabriel Musical mechanism of the type having a keyboard and a pin roll and pin roll for such mechanisms
GB2325257A (en) * 1997-05-15 1998-11-18 Glynwed Consumer & Constructio Floor / ceiling suspension arrangement
GB2347693A (en) * 1999-02-27 2000-09-13 Glynwed Engineered Products Li Decking hanger
FR2914710A1 (en) * 2007-04-06 2008-10-10 Normalu Soc Par Actions Simpli Attachment device for fixing suspended ceiling, has parts associatively maintained and engaged in groove without tool or complementary equipment by end of suspension unit for simultaneously passing parts through recesses
US20200173171A1 (en) * 2018-11-30 2020-06-04 Worthington Armstrong Venture Low profile suspended ceiling beam
US11519185B2 (en) 2019-12-27 2022-12-06 Verco Decking, Inc. Decking anchor, decking system utilizing the decking anchor, and method of installing the decking anchor
US11891818B2 (en) 2019-05-10 2024-02-06 Verco Decking, Inc. Decking anchor, decking system utilizing the decking anchor, and method of installing the decking anchor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB395835A (en) * 1932-05-04 1933-07-27 James Henry Bennetts An improved device for anchoring attachments to concrete and like surfaces
US2924089A (en) * 1958-03-03 1960-02-09 Gateway Engineering Company Hinged clip hanger for dovetail channel structure
AU4430768A (en) * 1969-10-01 1971-04-08 VANLOON and JEANETTE VANLOON LAMBERTUS Suspension means for ceilings and plenum services
GB1276067A (en) * 1969-02-13 1972-06-01 Philips Electronic Associated Suspension for a channel section
DE2160273A1 (en) * 1971-12-04 1973-06-07 Zieringer Philipp Kg SUB-CEILING ELEMENT
DE2202350A1 (en) * 1972-01-19 1973-07-26 Licentia Gmbh U-SHAPED MOUNTING RAIL ATTACHED TO A CEILING WITH PENDANTS
DE2339284A1 (en) * 1972-08-02 1974-02-21 Materiaux Reunis HANGING DEVICE FOR CEILING FILLING FROM CEILINGS
DE2707718A1 (en) * 1976-03-09 1977-09-15 Johann Knapp BASE CEILING MADE OF PANELS
DE2910967A1 (en) * 1979-03-21 1980-10-02 Richter Reinhold Under-ceiling double C=profile support rail - has anchor hanger and fixture clamping slit in top and bottom gripping openings
AU1963583A (en) * 1982-09-27 1984-04-05 Craig Richard Carle Hanger for support services

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB395835A (en) * 1932-05-04 1933-07-27 James Henry Bennetts An improved device for anchoring attachments to concrete and like surfaces
US2924089A (en) * 1958-03-03 1960-02-09 Gateway Engineering Company Hinged clip hanger for dovetail channel structure
GB1276067A (en) * 1969-02-13 1972-06-01 Philips Electronic Associated Suspension for a channel section
AU4430768A (en) * 1969-10-01 1971-04-08 VANLOON and JEANETTE VANLOON LAMBERTUS Suspension means for ceilings and plenum services
DE2160273A1 (en) * 1971-12-04 1973-06-07 Zieringer Philipp Kg SUB-CEILING ELEMENT
DE2202350A1 (en) * 1972-01-19 1973-07-26 Licentia Gmbh U-SHAPED MOUNTING RAIL ATTACHED TO A CEILING WITH PENDANTS
DE2339284A1 (en) * 1972-08-02 1974-02-21 Materiaux Reunis HANGING DEVICE FOR CEILING FILLING FROM CEILINGS
DE2707718A1 (en) * 1976-03-09 1977-09-15 Johann Knapp BASE CEILING MADE OF PANELS
DE2910967A1 (en) * 1979-03-21 1980-10-02 Richter Reinhold Under-ceiling double C=profile support rail - has anchor hanger and fixture clamping slit in top and bottom gripping openings
AU1963583A (en) * 1982-09-27 1984-04-05 Craig Richard Carle Hanger for support services

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
R.A. SALAMAN, "Dictionary of Tools", published 1977 by George Allen & Unwin (London), see page 105, item (e). *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2642556A1 (en) * 1989-02-01 1990-08-03 Castanie Gabriel Musical mechanism of the type having a keyboard and a pin roll and pin roll for such mechanisms
GB2325257A (en) * 1997-05-15 1998-11-18 Glynwed Consumer & Constructio Floor / ceiling suspension arrangement
GB2325257B (en) * 1997-05-15 2001-04-18 Glynwed Consumer & Constructio Ceiling suspension arrangement
GB2347693A (en) * 1999-02-27 2000-09-13 Glynwed Engineered Products Li Decking hanger
FR2914710A1 (en) * 2007-04-06 2008-10-10 Normalu Soc Par Actions Simpli Attachment device for fixing suspended ceiling, has parts associatively maintained and engaged in groove without tool or complementary equipment by end of suspension unit for simultaneously passing parts through recesses
US20200173171A1 (en) * 2018-11-30 2020-06-04 Worthington Armstrong Venture Low profile suspended ceiling beam
US11891818B2 (en) 2019-05-10 2024-02-06 Verco Decking, Inc. Decking anchor, decking system utilizing the decking anchor, and method of installing the decking anchor
US11519185B2 (en) 2019-12-27 2022-12-06 Verco Decking, Inc. Decking anchor, decking system utilizing the decking anchor, and method of installing the decking anchor

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