EP1584772A2 - Stützkonstruktion - Google Patents

Stützkonstruktion Download PDF

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Publication number
EP1584772A2
EP1584772A2 EP05252160A EP05252160A EP1584772A2 EP 1584772 A2 EP1584772 A2 EP 1584772A2 EP 05252160 A EP05252160 A EP 05252160A EP 05252160 A EP05252160 A EP 05252160A EP 1584772 A2 EP1584772 A2 EP 1584772A2
Authority
EP
European Patent Office
Prior art keywords
platform
stanchion
support
connector
support structure
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Withdrawn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
EP05252160A
Other languages
English (en)
French (fr)
Other versions
EP1584772A3 (de
Inventor
Brendan Reynolds
Augustine Reynolds
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.)
Austin Reynolds Site Safety Ltd
Original Assignee
Austin Reynolds Site Safety 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 Austin Reynolds Site Safety Ltd filed Critical Austin Reynolds Site Safety Ltd
Publication of EP1584772A2 publication Critical patent/EP1584772A2/de
Publication of EP1584772A3 publication Critical patent/EP1584772A3/de
Withdrawn legal-status Critical Current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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/153—Platforms made of plastics, with or without reinforcement
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3271—Safety mattresses
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/22—Devices for lowering persons from buildings or the like by making use of jumping devices, e.g. jumping-sheets, jumping-mattresses

Definitions

  • the present invention relates to a support structure, and in particular to a support structure in the form of an elevated platform able to arrest the fall of a person, and/or to act as a working platform able to support the weight of people and/or tools.
  • the invention also relates to various components of the support structure.
  • Previously proposed systems such as that proposed in British Patent Application GB 2322400, have relied on a platform formed as a plurality of intersecting strips of plastics material giving a platform having some resilience to absorb the impact of a person falling onto the platform.
  • the platform is supported by legs provided at each corner.
  • Each of the legs comprises a tube with a rubber or plastics foot at one end and a locating plate at the opposite end.
  • the upper surface of the locating plate includes a number of upstanding projections or bosses that are received within apertures in the support platform.
  • the support platform can be tied to the locating plate via a number of ties.
  • metal screws or bolts can be used to screw or bolt the components together.
  • Another system proposed by the present applicant uses a moulded platform including lower projections that are received within recesses of a stanchion support integrally formed on one end of a stanchion or leg.
  • Some support platforms are not able to satisfactorily absorb the impact of a body falling upon them, either because the support platform itself is not sufficiently strong to absorb the impact, or due to the support legs not being able to withstand the impact.
  • a support structure comprises a platform, a plurality of stanchions, and a connector coupled to the end of each stanchion for coupling the stanchion to the platform, wherein at least one connecting pin is provided to pass through a portion of the platform, stanchion and connector to removably connect these.
  • the provision of a pin that passes through parts of the platform, stanchion and connector to connect these is of advantage as this is a simple and quick way of connecting the components of the support structure which helps ensure that the support structure is properly assembled for use, whilst effectively connecting the components to avoid the problem of these becoming separated during use, and especially as the result of an impact on the support platform.
  • the support structure of the present invention will be more widely and correctly used, and will be better suited to absorb impacts and thereby protect injury in use.
  • the structure is usable both as a working platform and as a fall arrest system.
  • the connectors are removably connected to the stanchions.
  • the use of separate stanchions, connectors and platforms is advantageous for transportation of the support platforms, allowing the support platforms to be broken down into individual components that may easily be packaged and transported.
  • the connector comprises a generally central opening for receiving one end of the stanchion, and includes at least one recess for receiving a projection from the underside of the platform.
  • the side wall of the opening for receiving the stanchion include aligned openings for receiving the pin, the end of the stanchion received within the opening of the connector including similarly aligned openings for receiving the pin, the side wall of the recess of the connector include aligned holes for receiving the pin, and the at least one projection from the platform includes an aligned hole for receiving the pin when the projection is received within the recess.
  • the openings are preferable in the form of elongate slots which, in use, are arranged generally vertically. This allows some relative movement between the components in one, generally vertical direction.
  • the connector includes a mating component for mating with the stanchion attached to the connector, helping prevent relative rotation of stanchion with respect to the connector.
  • the mating component may also provide a frictional engagement between the connector and the stanchion to help prevent the accidental removal of the stanchion from the connector.
  • the connector includes a number of recesses for receiving the at least one projection from a platform.
  • the connector includes four recesses arranged in a square configuration.
  • each of the platforms includes a plurality of projections from the lower side of the platform at each corner to be received within the recesses of the connector. Where three projections are provided at the corner, and the stanchion is provided at the corner of a single platform, all three projections are received in the recesses of the connector.
  • two side by side projections may be received in two side by side recesses of the connector, and two side by side projections on the second platform may be received in the other two recesses of the connector, thereby giving reliable support for both platforms.
  • the outer corner projection of each of the four platforms may be received in the four recesses of the connector, enabling the connector to connect the four platforms.
  • a second pin may be provided to connect all four projections of the platforms to the recesses of the connector.
  • other projections are provided at other positions for connection to a connector, for example projections along the side edges or in the centre of the platform.
  • the upper surface of the connector is formed with an embossed or gripping surface to prevent slipping.
  • a connector may be provided at the end of the stanchion opposite that which supports the platform.
  • the connector may be connected to the stanchion by a pin in a similar manner as the connector supporting the platform.
  • the second connector acts as a foot to help support the platform. In this case, the gripping surface will be in contact with the floor, and this will help avoid slipping of the platform.
  • the platform may be moulded.
  • the platform may be formed by moulding, for example by injection moulding or by rotational moulding. This enables the platform to be formed as a hollow structure, which helps reduce the cost for manufacture by reducing the amount of material used, and also reduces weight.
  • the platform may have a solid structure, and in this case can be formed by injection or other moulding techniques.
  • the platform includes a number of apertures extending through the platform. This reduces the weight of the platform, and reduces the cost of manufacture, by reducing the amount of material required. Further, the openings allow drainage through the platform. This is particularly advantageous as any moisture or rain water collecting on the surface of the platform or in the recesses which may make this slippery and dangerous. Further, this helps to avoid water collecting which may otherwise wet users assembling the structure. It is preferred that at least the upper surface of the platform includes an embossed or grip surface to help prevent slipping.
  • the platform includes a supporting rib structure.
  • the platform may be of any suitable dimensions, it is preferred that the platform has sides of between around 0.8m and 1.2m in length, and ideally that the platform has a rectangular shape having a length of around 1.2m and a width of around 0.8m. This is a size which can be easily supported by a minimum number of legs or stanchions whilst giving the required strength.
  • the platform may have a thickness or height of around 60mm.
  • the platform should be able to support the impact of a body falling onto the platform, and at least two other people to assist in the rescue of a person fallen onto the platform, the platform ideally has some resilience to absorb the shock of impact, rather than being brittle.
  • the platform is made from a polyolefin material.
  • the stanchion and other components of the support may also be formed from polyolefin.
  • a stanchion or support leg for a support structure comprising a generally tubular elongate member including axially extending grooves or ridges.
  • the stanchion is preferably around 2m in length. However, the height will be dependent upon the desired height of the platform, and therefore longer or shorter legs could be used. The diameter and wall thickness of the stanchion will be dependent upon the load to be supported and the length of the stanchion. It is preferred that the diameter of the stanchion is around 70mm, especially where the stanchion length is around 2m.
  • a hollow leg as opposed to a solid leg, is advantageous as it reduces the amount of material required to form the leg, thereby reducing manufacturing costs, and also reduces the weight of the stanchion.
  • the provision of axially extending grooves or ridges enhances the overall strength of the stanchion, and in particular its resistance to buckling.
  • the stanchion preferably includes a foot attached to or formed integrally at one end.
  • the foot is preferably a rubber foot received within or extending over one end of the stanchion.
  • the support platform according to the first aspect of the present invention includes a plurality of stanchions according to the second aspect of the present invention.
  • the mating means on the connector for mating the leg or stanchion and the connector comprises one or more axially extending ribs or projections on the inner wall of the opening of the connector that receives the end of the stanchion, the elongate ribs or projections being received in the grooves or ridges of the stanchion to prevent relative rotation between the stanchion and the connector.
  • the ribs or projections may be in the form of discrete projections rather than elongate projections, and may either extend into grooves of the stanchion or abut against elongate ridges to prevent relative rotation.
  • a subsidiary platform for a support structure arranged to be held between a support platform and a stanchion and arranged to extend beyond the outer periphery of the support platform in at least one direction.
  • This aspect of the invention is of particular benefit where the area in which the support structure is provided cannot be covered completely by the normal support platforms. This is a problem since voids are typically not of a standard size.
  • Using the subsidiary support structures of this aspect of the invention enables an extension to extend from the main support platform to fill any gaps, for example around the periphery of the support platform to a side wall of a void or opening in which the support platform is provided. It is generally necessary to provide 'bridging' platforms, these being additional platforms that are provided on top of supported platforms to bridge gaps between these to cover a desired area.
  • Such bridging platforms are undesirable as these create different levels of the overall platform which can create a tripping hazard.
  • the use of subsidiary support platforms according to the present invention which do not lie on top of the remainder of the support helps supplement the use of bridging platforms, and may help reduce the number of bridging platforms required to provide a platform over a required or desired area.
  • the use of subsidiary platforms or supports it is possible to ensure that the overall platform extends to and abuts against any generally vertical walls or surfaces. This helps ensure the stability of the platform, since this is not able to sway, twist or rock due the abutment with the sides. This is especially useful in an enclosed void.
  • the subsidiary support structure is to be provided in a support structure according to the first aspect of the present invention, it is preferred that the subsidiary support structure includes openings which receive the projections from the support platform that are in turn received within the recess of the connector. In this way, the subsidiary support structures are held firmly in place, both being prevented from lateral movement and from vertical movement.
  • the subsidiary support structure can be used with other support structures.
  • the subsidiary support structures may be of any desired size and various different size subsidiary support structures may be provided for different size openings.
  • the openings through which the at least one pin extends to connect the components is in the form of an elongate opening. This allows parts of the openings to be aligned whether or not the spacer is provided between the platform and the connector or not, and therefore allows the pin to pass through the openings to connect the components as required.
  • a fall arrest or working platform comprises a platform 2 which may be formed from a plastics material, such as polyolefin, and may be suitably moulded. Most preferably, the components are formed from a Block co-polymer polypropylene.
  • the support platform includes a number of through holes 30 arranged to reduce the weight of the platform, and to allow drainage of liquid.
  • the top surface 34 of the platform is either textured or formed from a material to give enhanced grip.
  • the underside of the platform includes a series of ribs 36 that are provided to enhance the strength of the platform, whilst reducing the overall weight.
  • the underside of the platform also includes a series of projections 32 extending from the underside of the platform, and arranged to be located in a stanchion support or connector as described below.
  • a series of projections 32 extending from the underside of the platform, and arranged to be located in a stanchion support or connector as described below.
  • three projections are provided at each corner, with a further two projections being provided approximately half way along each side of the platform, and four projections being provided in or around the centre of the platform. It will be appreciated that different numbers and arrangements of projections are possible.
  • the platform is supported by a number of legs or stanchions, with appropriate stanchion supports.
  • a single platform is supported by five such stanchions or legs, one provided at each corner, and a further stanchion provided in the centre.
  • the stanchion supports may be offset to support a plurality of platforms.
  • the stanchions comprise a generally tubular, elongate member which is preferably formed from polyolefin.
  • the elongate member preferably has a length of around 2m, a maximum cross-sectional dimension of around 70mm, and has a wall thickness of around 4.5mm.
  • the elongate member has a series of elongate ridges, grooves or channels extending substantially along the length of the elongate member.
  • grooves 50 are provided. These grooves act to strengthen the leg, and in particular help resist compressive forces on the leg, and buckling.
  • grooves may be used, although it is preferred that these are equally spaced around the circumference of the stanchion. In a preferred embodiment, four grooves are provided.
  • a stanchion support is provided at either end of the stanchion - one support to support the platform, the other to act as a foot for the stanchion.
  • both stanchion supports are connected to the stanchion using a pin.
  • the lower end of the stanchion may include a foot or grip provided integrally or otherwise fixed to the stanchion.
  • the foot may be a rubber end piece which is attached to the end of the stanchion, for example by a friction fit or by adhesive. In this case, the foot contacts the ground on which the platform is provided, and holds this in place.
  • the receiving cavity of the stanchion support includes internal projections, projecting inwardly from the inner wall of the cavity, and receivable within a corresponding groove of the stanchion.
  • the stanchion and the stanchion support are interconnected in such a way as to resist removal of the stanchion from the stanchion support, and to prevent relative rotational movement between the stanchion and the stanchion support. This is of particular advantage as it helps ensure that the stanchion is correctly located within the support such that the openings for receiving the pin are aligned.
  • the stanchion support is shown in greater detail in Figure 4.
  • the stanchion support has a central opening 44 which is shaped and sized to receive one end of the stanchion 8.
  • a plurality of recesses 40 Arranged around the central recess, and extending from the opposite side or face of the support, are a plurality of recesses 40. These recesses 40 are arranged to receive the projections 32 of the working platform.
  • the surface 42 from which the recesses 40 open should include an embossed or gripping surface or material. This helps prevent slipping of the stanchion support with respect to the working platform or floor.
  • a stanchion support is provided at each end of the stanchion, one end acting as a foot, and the other end acting as a support for the working platform.
  • each of the projections 32 of the platform 2, each of the recesses 42 of the stanchion support 4 and the stanchion 8 include openings 14, 16 and 10 respectively.
  • these holes 14, 16, 10 will be in alignment.
  • a pin 6, shown best in Figure 6, is then extended through the holes, thereby constraining the stanchion support, stanchion, subsidiary platform or 'spacer' (where provided) and working platform to prevent relative movement of these.
  • the pin preferably has a total length of around 260 to 270mm, although the length will be dependent upon the size of the stanchion support through which the pin must extend.
  • the pin includes a means for locking this in place, and further includes a transverse extension 62 provided at one end.
  • the locking means includes a circular rib provided adjacent the transverse end 62 of the pin. In use, the rib passes beneath a coupling aperture of the connector, and is prevented from removal.
  • the locking means may comprise a bifurcated end 64 at the opposite end of the pin to the transverse extension 62.
  • the bifurcated end 64 of the pin is biased apart, such that when the pin is inserted into the holes of the working platform, the ends are forced towards each other, against the bias, to allow the pin to pass through the holes, but as the pin end passes through the end of the holes, the bifurcated ends are biased apart, thereby creating a gripping force on the outer surface of the stanchion support to hold the pin in place.
  • the transverse end 62 is provided to assist in positioning and removal of the pin.
  • a second pin may be provided through the side walls of the lower stanchion support and through the holes in the opposite end of the stanchion to clip the stanchion support to the stanchion.
  • a spacer plate 12 As shown in Figure 7, the spacer plate 12 includes through holes 56. In use, and as shown best in Figure 2, the spacer plate is provided between the upper stanchion support and the lower surface of the fall arrest or working platform, effectively sandwiching the extension support between the platform and the stanchion support. In this case, the projections 32 of the platform extend through the openings 56 in the extension plate 12 and into the recesses 42 of the stanchion support 4. As can be seen in Figure 12, the extension support will extend beyond the outer periphery of the platform 2. This extension extends the effective area covered by the working platform, without requiring additional platforms.
  • the extension support piece is therefore ideal for filling small gaps around the periphery of the platform to a side wall of a void in which the support platform is provided. Also, by abutting against the side walls of a void, the support platform is more stable, being resistant to tipping.
  • the spacer may be of any desired size, and it is considered optimal to have spacers of different size to enable the platform to fit any desired size. However, it is preferred that the spacer has a size of around 280mm x 320mm, and a thickness of around 5mm.
  • extension support piece may be used in conjunction with other fall arrest or working surface systems, and is not limited to use with a fall arrest system according to the main aspect of the present invention. It will also be appreciated that the stanchions according to the present invention can be used in other fall arrest systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Handcart (AREA)
  • Bridges Or Land Bridges (AREA)
  • Floor Finish (AREA)
  • Fencing (AREA)
EP05252160A 2004-04-07 2005-04-06 Stützkonstruktion Withdrawn EP1584772A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0407956 2004-04-07
GB0407956A GB2412941B (en) 2004-04-07 2004-04-07 Support structure

Publications (2)

Publication Number Publication Date
EP1584772A2 true EP1584772A2 (de) 2005-10-12
EP1584772A3 EP1584772A3 (de) 2007-09-12

Family

ID=32320543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05252160A Withdrawn EP1584772A3 (de) 2004-04-07 2005-04-06 Stützkonstruktion

Country Status (2)

Country Link
EP (1) EP1584772A3 (de)
GB (1) GB2412941B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2551699A (en) * 2016-06-20 2018-01-03 Three G Metal Fabrication Ltd A platform system
WO2019077326A1 (en) * 2017-10-17 2019-04-25 J.Mac Safety Systems Limited IMPROVEMENTS IN OR RELATING TO A SAFETY FLOOR
WO2022118012A1 (en) * 2020-12-01 2022-06-09 J. Mac Safety Systems Limited A lapboard for a safety deck

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0418311D0 (en) * 2004-08-17 2004-09-15 Robson William Fall arrest system
GB2456817B (en) * 2008-01-25 2010-03-17 Richard Stephen Bond Platform systems, e.g. for fall-prevention during building construction
GB2472844A (en) * 2009-08-21 2011-02-23 Promote Products Ltd Scaffold board
GB2554867B (en) * 2016-10-05 2020-04-22 Barry Leech Brendan A block for modular construction of a platform
AU2019388458A1 (en) * 2018-11-29 2021-06-24 John Arthur Grey A support frame and method of use

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB247057A (en) * 1925-06-04 1926-02-11 Frederic Armstrong Davidson A support for use on scaffolding and like structures
US3245495A (en) * 1964-01-22 1966-04-12 Jr Thomas M Wells Scaffold
US3883104A (en) * 1974-03-06 1975-05-13 Lane Company Inc Table leg fastening means
GB2231117A (en) * 1989-04-07 1990-11-07 Marconi Co Ltd Framework structure
DE9115979U1 (de) * 1991-12-23 1992-02-20 Wilhelm Albert Gmbh Leitern- Und Geruestefabrik, 8752 Kleinkahl, De
GB2322400A (en) * 1997-02-20 1998-08-26 Graceland Hire Ltd Safety and support structure
DE19911380A1 (de) * 1999-03-15 2000-09-21 Plettac Ag Verbindungselement für Bühnensysteme
EP1101423A2 (de) * 1999-11-18 2001-05-23 Fray Design Limited Möbel
DE20105702U1 (de) * 2001-03-30 2001-08-09 Layher W Vermogensverw Gmbh Eckbereich einer Gerüstanordnung mit Konsoleinrichtungen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0016534A1 (de) * 1979-02-21 1980-10-01 Ferodo Limited Laufstege für Dächer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB247057A (en) * 1925-06-04 1926-02-11 Frederic Armstrong Davidson A support for use on scaffolding and like structures
US3245495A (en) * 1964-01-22 1966-04-12 Jr Thomas M Wells Scaffold
US3883104A (en) * 1974-03-06 1975-05-13 Lane Company Inc Table leg fastening means
GB2231117A (en) * 1989-04-07 1990-11-07 Marconi Co Ltd Framework structure
DE9115979U1 (de) * 1991-12-23 1992-02-20 Wilhelm Albert Gmbh Leitern- Und Geruestefabrik, 8752 Kleinkahl, De
GB2322400A (en) * 1997-02-20 1998-08-26 Graceland Hire Ltd Safety and support structure
DE19911380A1 (de) * 1999-03-15 2000-09-21 Plettac Ag Verbindungselement für Bühnensysteme
EP1101423A2 (de) * 1999-11-18 2001-05-23 Fray Design Limited Möbel
DE20105702U1 (de) * 2001-03-30 2001-08-09 Layher W Vermogensverw Gmbh Eckbereich einer Gerüstanordnung mit Konsoleinrichtungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2551699A (en) * 2016-06-20 2018-01-03 Three G Metal Fabrication Ltd A platform system
WO2019077326A1 (en) * 2017-10-17 2019-04-25 J.Mac Safety Systems Limited IMPROVEMENTS IN OR RELATING TO A SAFETY FLOOR
WO2022118012A1 (en) * 2020-12-01 2022-06-09 J. Mac Safety Systems Limited A lapboard for a safety deck

Also Published As

Publication number Publication date
GB2412941A (en) 2005-10-12
EP1584772A3 (de) 2007-09-12
GB0407956D0 (en) 2004-05-12
GB2412941B (en) 2009-08-05

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