WO2016151307A1 - Échafaudage réglable - Google Patents

Échafaudage réglable Download PDF

Info

Publication number
WO2016151307A1
WO2016151307A1 PCT/GB2016/050783 GB2016050783W WO2016151307A1 WO 2016151307 A1 WO2016151307 A1 WO 2016151307A1 GB 2016050783 W GB2016050783 W GB 2016050783W WO 2016151307 A1 WO2016151307 A1 WO 2016151307A1
Authority
WO
WIPO (PCT)
Prior art keywords
leg
scaffold
spaced
support frame
extensible
Prior art date
Application number
PCT/GB2016/050783
Other languages
English (en)
Original Assignee
BLACK, John Alexamnder
Black, Robert David
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 BLACK, John Alexamnder, Black, Robert David filed Critical BLACK, John Alexamnder
Publication of WO2016151307A1 publication Critical patent/WO2016151307A1/fr

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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
    • 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
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • 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
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
    • 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
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/22—Scaffolds having a platform on an extensible substructure, e.g. of telescopic type or with lazy-tongs mechanism
    • 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
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • 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
    • E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
    • 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
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/36—Scaffolds for particular parts of buildings or buildings of particular shape, e.g. for stairs, cupolas, domes
    • E04G1/365—Scaffolds for particular parts of buildings or buildings of particular shape, e.g. for stairs, cupolas, domes specially adapted for staircases or stairs
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/142—Railings extensible or telescopic
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/14—Railings
    • E04G5/145—Toe boards therefor
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/16—Struts or stiffening rods, e.g. diagonal rods
    • 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
    • E04G2001/155—Platforms with an access hatch for getting through from one level to another
    • 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
    • E04G2001/157—Extensible platforms, e.g. telescopic platforms

Definitions

  • This invention relates to a scaffold, in particular to a multipurpose adjustable scaffold.
  • Elevated working areas are required to ensure tasks which are normally out of reach, or are unsafe to complete from ground level can be safely completed.
  • the elevated working area should provide a flat platform and allow the task to be completed at a height which is most convenient to the user. Desirably, the elevated working area should be suitable for use on undulating, uneven ground as well as flat surfaces.
  • One common solution for providing an elevated working area uses a pair of height adjustable stands designed to be placed at each end of a desired working area.
  • a platform is provided, for example by two planks of wood.
  • the length of this elevated working area can only be modified by using planks of a different size.
  • Step-ladders can also be used, though these typically have only a small elevated platform provided. There are many tasks where to perform them from such apparatus would be unsafe.
  • GB2394248 discloses a telescopic frame for supporting a platform.
  • the present invention seeks to provide an alternative to apparatus of the prior art for providing elevated working areas.
  • an extensible scaffold comprising a support frame.
  • the support frame comprises a first spaced member, a second spaced member and at least one extensible member extensibly connecting the first spaced member to the second spaced member.
  • the extensible scaffold further comprises a first leg mounted at the first spaced member.
  • the first leg comprises a leg component extensibly connected to a foot.
  • the extensible scaffold further comprises a second leg mounted at the second spaced member and a collar provided at the first spaced member and arranged to slidably receive the leg component of the first leg.
  • the leg component has defined therein a plurality of spaced holes for securing the leg component to the collar at one of a discrete set of leg extension values of the leg component relative to the support frame.
  • the first leg is securable into a splayed-leg configuration in which the first leg extends substantially downwardly from the support frame in a direction outwardly from a footprint of the support frame.
  • the effective length of the first leg can be fine-tuned by adjustment of the foot.
  • a working platform provided by the extensible scaffold can remain level, even when the scaffold is provided in a splayed-leg configuration, without requiring adjustment of the leg component in the collar.
  • the first leg may be configurable to extend at an angle of between 0 degrees and 15 degrees from the vertical.
  • the second leg may be securable into the splayed-leg configuration.
  • the first leg and the second leg may both be configured to splay in the same direction.
  • the first leg, when splayed, may be configured to remain substantially within a plane transverse to the direction of extension between the first spaced member and the second spaced member.
  • the first spaced member may have defined therein an upper opening in an upper surface of the first spaced member.
  • the first spaced member may have defined therein a lower opening in an opposing lower surface of the first spaced member.
  • at least one of the upper opening and the lower opening may provide the collar.
  • the first spaced member may be provided with a cavity inwardly of an innermost edge of the upper opening and the lower opening, whereby to permit a top of the leg component to be received within the cavity to accommodate the first leg in the splayed-leg configuration when the top of the leg component is between the upper opening and the lower opening.
  • the top of the leg component may be out of alignment with the upper opening.
  • the leg component may have defined therein a leg component securing hole.
  • the first spaced member may have defined therein a splayed leg securing hole for receiving a fastener for aligning the leg component securing hole with the splayed leg securing hole, whereby to secure the first leg in the splayed leg configuration.
  • the lower opening may have a width greater than a width of the leg component, whereby to accommodate the leg component within the lower opening, when the leg component is moved to the splayed-leg configuration.
  • the width is the extent of the opening in the direction of splay.
  • the width of the leg component may be the width of the leg component when the first leg is in a vertical configuration.
  • the width of the lower opening may be less than 1.5 times the width of the leg component.
  • the foot may be continuously extensible from the leg component between an upper extension limit and a lower extension limit.
  • the effective length of the first leg may be set to be anywhere between a range based on the length of the first leg at the upper extension limit and the length of the first leg at the lower extension limit.
  • the leg component may be connected to the foot via a threaded connection.
  • the leg component may be connected to the foot via a telescopic connection.
  • the first leg may be connected to the second leg by a lower bracing member.
  • the lower bracing member may be connected to the first leg by at least two mounting points.
  • the lower bracing member may be connected to the second leg by at least two mounting points.
  • the lower bracing member may further stabilise the scaffold.
  • the scaffold may further comprise a first platform member mounted to the extensible member and configured to provide a first portion of a platform on the support frame.
  • the scaffold may further comprise a hatch cover hingedly mounted to the first spaced member and slidable relative to the first platform member and configured to provide a second portion of the platform on the support frame.
  • the hatch cover may be arranged to be openable to provide access through the support frame.
  • an extensible scaffold comprising a support frame comprising a first spaced member and a second spaced member and at least one extensible member extensibly connecting the first spaced member to the second spaced member, a first platform member mounted to the extensible member and configured to provide a first portion of a platform on the support frame, and a hatch cover hingedly mounted to the first spaced member and slidable relative to the first platform member and configured to provide a second portion of the platform on the support frame, wherein the hatch cover is arranged to be openable to provide access through the support frame.
  • the scaffold may comprise a second platform member mounted to the second spaced member and slidable relative to the first platform member, wherein the second platform member is configured to provide a third portion of the platform on the support frame.
  • the hatch cover and/or the second platform member may be arranged to overly the first platform member in an unextended configuration of the scaffold.
  • the area of the hatch cover may be larger than the area of the first and/or second platform member.
  • the extensible member may comprise a central member, a first extension and a second extension, the first extension being mounted to the first spaced member and the second extension being mounted to the second spaced member, wherein the first extension and the second extension are each slidable relative to the central member and the first platform member is mounted to the central member.
  • an extensible scaffold comprising a support frame comprising a first spaced member and a second spaced member and at least one extensible member extensibly connecting the first spaced member to the second spaced member, and a first platform member mounted to the extensible member and configured to provide a first portion of a platform on the support frame, wherein the extensible member comprises a central member, a first extension and a second extension, the first extension being mounted to the first spaced member and the second extension being mounted to the second spaced member, wherein the first extension and the second extension are each slidable relative to the central member and the first platform member is mounted to the central member.
  • the first extension and/or the second extension may be slidably received within the central member.
  • the scaffold may comprise a railing assembly mounted to the extensible member.
  • the railing assembly may be removably mounted to the extensible member.
  • the scaffold may comprise a kick plate mounted to the extensible member.
  • the kick plate may comprise at least one kick plate extension which is slidable relative to the kick plate to extend the kick plate.
  • the present disclosure provides a scaffold comprising a support frame having a first end and a second end, a first leg hingedly mounted to the first end, and a second leg hingedly mounted to the second end, wherein the first leg and the second leg are hingedly movable between a deployed position and a folded position, and wherein when the first leg and the second leg are in the folded position, the first leg and the second leg are arranged to extend substantially parallel to the plane of the support frame and wherein the support frame is provided between the first leg and the second leg.
  • the first leg and/or the second leg may be slidably received within a collar and the collar may be hingedly mounted to the first or second end.
  • the first leg and/or the second leg may comprise a telescopic extension.
  • the scaffold may further comprise a first leg mounted at the first spaced member of the support frame and a second leg mounted at the second spaced member of the support frame.
  • the first leg may be securable into a splayed-leg configuration in which the first leg extends substantially downwardly from the support frame in a direction outwardly from a footprint of the support frame.
  • the first leg may comprise a leg component extensibly connected to a foot.
  • the scaffold may further comprise a collar provided at the first spaced member and arranged to slidably receive the leg component of the first leg.
  • the leg component may have defined therein a plurality of spaced holes for securing the leg component to the collar at one of a discrete set of leg extension values of the leg component relative to the support frame.
  • Figure 1 is an illustration of an embodiment of an adjustable scaffold in an unextended configuration
  • FIGS 2 to 5 are illustrations of the adjustable scaffold of Figure 1 at different stages during reconfiguration from the unextended configuration to an extended configuration
  • Figure 6 is an illustration of the adjustable scaffold of Figure 5 shown in a first elevated configuration
  • Figure 7 is an illustration of the adjustable scaffold of Figure 5 shown in a second elevated configuration
  • Figure 8 is an illustration of a close up view of a portion of the adjustable scaffold shown in a configuration similar to that of Figure 5;
  • Figure 9 is an illustration of a close up view of a portion of the adjustable scaffold shown in Figure 1 ;
  • Figure 10 is an illustration of a close up view of a portion of the adjustable scaffold shown in Figure 5;
  • Figure 11 is an illustration of a close up view of a portion of the adjustable scaffold shown in Figure 8.
  • Figure 12 is an illustration of the adjustable scaffold of Figure 1 with a railing assembly removed;
  • Figure 13 is an illustration of a railing assembly member for use in the adjustable scaffold of any of Figures 1 to 12; and Figure 14 is an illustration showing the operation of the pivoting legs as used on an adjustable scaffold of the type shown in any of Figures 1 to 12;
  • Figure 15 is an illustration of a further embodiment of an adjustable scaffold in a splayed legs configuration
  • Figures 16a and 16b show the adjustable scaffold of Figure 15 in different configurations and from an end-on view
  • Figure 17 is a close-up view of a leg splay mechanism for the adjustable scaffold shown in Figures 15 to 16b;
  • Figures 18 and 19 are further views of the leg splay mechanism shown in Figure 17.
  • FIG 1 is an illustration of an embodiment of an adjustable scaffold 1 in an unextended configuration.
  • the scaffold 1 comprises four legs 10 formed from tubing having a rectangular cross section. Each leg 10 passes through a collar 12. The extension of the leg 10 through the collar 12 is adjustable.
  • a pair of collars 12 are joined together in a longitudinal direction by an extensible member 20.
  • the extensible member 20 comprises a series of longitudinal members 22, 21 , which join a pair of collars 12 together in a longitudinal direction of the scaffold 1.
  • the longitudinal members comprise a centre longitudinal member 22 and a pair of outer longitudinal members 21 (not shown in Figure 1). Each outer longitudinal member 21 is slidably received within an end of the centre longitudinal member 22 to allow the collars 12 to be variably spaced in a longitudinal direction.
  • the scaffold 1 comprises two extensible members 20, joining separate pairs of collars 12.
  • the scaffold 1 also comprises a pair of end members 24 connected to the collars 12 to connect the two extensible members 20. In this way, a plan-view outline of the scaffold 1 is substantially rectangular.
  • the combination of the extensible members 20 and the end members 24 form a support frame.
  • a railing assembly 30 is fitted to the scaffold 1 adjacent to each extensible member 20.
  • the railing assembly 30 will be described further in relation to Figure 5 below and functions to restrict the access of people or objects onto or off the scaffold 1.
  • the scaffold 1 also comprises a pair of railing gates 40, each secured adjacent to each of the end members 24. Each railing gate 40 can be opened or closed to allow or restrict the access of people or objects onto or off the scaffold 1.
  • the scaffold 1 also comprises a floor 50 secured to the extensible members 20 and the end members 24.
  • the floor 50 provides a platform on the scaffold 1.
  • a wheel 18 is secured to an end of each leg 10 to allow the scaffold 1 to be easily moved from a first location to a second location.
  • the scaffold 1 is shown in an unextended configuration in Figure 1.
  • the scaffold 1 has an unextended length of approximately 120 centimetres and a width of 60 centimetres. In this configuration, the scaffold 1 can be manoeuvred easily around a work site, including for example within an elevator.
  • the scaffold 1 may be used in this configuration as a trolley to transport materials and tools, for example.
  • FIGs 2 to 5 are illustrations of the adjustable scaffold of Figure 1 at different stages during reconfiguration from the unextended configuration to an extended configuration.
  • the outer longitudinal member 21 is extensible from an end of the centre longitudinal member 22. The movement of one of the outer longitudinal members 21 allows the length of the scaffold 1 to be increased by
  • the floor 50 comprises an outer floor section 52, a middle floor section 54 and a hatch cover 56.
  • the middle floor section 54 is secured directly to the centre longitudinal members 22.
  • the outer floor section 52 is secured to the outer longitudinal member 21 and one of the end members 24. In this way, when one of the end members 24 is extensibly separated from the other of the end members 24, the outer floor section 52 is also extensibly separated from the other of the end members 24.
  • the hatch cover 56 is secured to the other of the end members 24. Therefore, when the scaffold 1 is extended, the hatch cover is also extensibly separated from the other of the end members 24.
  • the outer floor section 52 and the hatch cover 56 are pushed together so that the middle floor section 54 is substantially covered by the outer floor section 52 and the hatch cover 56.
  • the hatch cover 56 is longer than the outer floor section 52.
  • the middle floor section 54 is also typically longer than the outer floor section 52 and shorter than the hatch cover 56.
  • the railing assembly 30 is typically extensible independently from the extensible member 20. Each railing assembly 30 is also typically operable independently from the other railing assembly 30.
  • the railing assembly 30 comprises a centre kick plate 31 functioning as a longitudinal structural member of the railing assembly 30.
  • the centre kick plate 31 is secured to two uprights 32.
  • Each upright 32 is typically formed from a metal tube.
  • a first end of each upright 32 is releasably mounted to the centre longitudinal member 22 using mounting bolts.
  • a lower cross piece 33 and an upper cross piece 35 are provided and connect each upright 32.
  • the upper cross piece 35 is provided at a second end of each upright 32.
  • the lower cross piece 33 is provided between the first end and the second end of each upright 32.
  • the upper cross piece 35 comprises a telescoped upper cross piece 36 for extensibly increasing a length of the upper cross piece 35 to ensure that even in an extended configuration, the railing assembly 30 extends over the length of the scaffold 1.
  • the lower cross piece 33 comprises a telescoped lower cross piece 34 for extensibly increasing a length of the lower cross piece 33.
  • the railing assembly 30 is also provided with outer kick plates 37 which are slidably mounted to the centre kick plate 31 for extensibly increasing a length of a bottom region of the railing assembly 30.
  • a thumb screw 38 is provided through a slot defined in the outer kick plate 37 and attached to the centre kick plate 31. The thumb screw 38 is tightened to fix the position of the outer kick plate 37 relative to the centre kick plate 31.
  • FIG 4 shows the scaffold 1 in the configuration where both outer longitudinal members 21 have been extended to lengthen the platform to its extended length of approximately 180 centimetres. In the extended configuration, only a small portion of the middle floor section 54 remains beneath the outer floor section 52 and the hatch cover 54. As shown in Figure 5, both outer kick plates 37, the telescoped lower cross piece 34 and the telescoped upper cross piece 36 can also be extended to ensure that the railing assembly 30 provides a safety rail across the whole length of the scaffold 1 , regardless of whether the scaffold 1 is in the unextended configuration or the extended configuration.
  • FIG. 6 is an illustration of the adjustable scaffold of Figure 5 shown in a first elevated configuration.
  • the scaffold 1 is shown in the extended configuration.
  • Each of the legs 10 is extended through the collar 12, raising the height of the scaffold 1 and providing an elevated working area.
  • each leg 10 comprises an outer leg member 14.
  • the outer leg member 14 has defined therein a series of spaced outer locating holes 15.
  • the collar 12 comprises two securing pins 13 for engaging with two adjacent holes from the outer locating holes 15.
  • the securing pins 13 fix the position of the leg 10.
  • the height of the scaffold 1 is adjusted by disengaging the securing pins 13 from one set of outer locating holes 15 and re-engaging the securing pins 13 with a further set of outer locating holes 15.
  • Each leg 10 also comprises a stop plate 19 connected at a bottom of the leg 10 to prevent the collar 12 sliding beyond the lowermost end of the leg 10.
  • the stop plate 19 is typically positioned above the height of the wheel 18.
  • FIG. 7 is an illustration of the adjustable scaffold of Figure 5 shown in a second elevated configuration.
  • Each leg 10 further comprises an inner leg member 16
  • the inner leg member has defined therein a series of spaced inner locating holes 17.
  • the inner locating holes are spaced at the same distances as the outer locating holes 15. In this way, two adjacent outer locating holes 15 can line up exactly with two adjacent inner locating holes 17 to secure the inner leg member 16 relative to the outer leg member 14 using securing pins (not shown) which are configured to engage through an outer locating hole 15 and an inner locating hole 17 that are aligned.
  • the inner leg member 16 and outer leg member 14 are mutually slidable to allow a further height extension of the scaffold 1. Using a combination of the collar 12, the outer leg member 14 and the inner leg member 16, the height of the floor 50 of the scaffold 1 can be varied from approximately 10 centimetres to 200 centimetres above the ground.
  • FIG 8 is an illustration of a close up view of a portion of the adjustable scaffold shown in a configuration similar to that of Figure 5.
  • the scaffold 1 is in the extended configuration.
  • the hatch cover 56 is hingedly connected to the end member 24.
  • the hatch cover 56 is opened to allow a person to pass through the hatch from within the footprint of the scaffold 1.
  • Mounting the floor 50 of the scaffold 1 from within the footprint of the scaffold 1 is typically safer for a user than accessing the scaffold 1 from outside the footprint of the scaffold 1 , because the weight of the user acts within the footprint of the scaffold and does not therefore act to tip the scaffold, particularly when the scaffold 1 is providing an elevated platform.
  • the hatch cover 56 is typically closed to provide a continuous platform across the floor 50 of the scaffold 1.
  • Figure 9 is an illustration of a close up view of a portion of the adjustable scaffold shown in Figure 1.
  • a platform of the scaffold 1 is provided by the outer floor section 52 and the hatch cover 56.
  • the middle floor section 54 (not visible) is beneath the outer floor section 52 and the hatch cover 56 and provides support thereto.
  • FIG 10 is an illustration of a close up view of a portion of the adjustable scaffold shown in Figure 5.
  • the platform of the scaffold 1 is provided by the outer floor section 52, the middle floor section 54 and the hatch cover 56. Only a small part of the middle floor section 54 remains covered by the outer floor section 52 and the hatch cover 56 to ensure a continuous floor 50 is provided.
  • the middle floor section 54 is not mounted centrally on the centre longitudinal member.
  • the middle floor section 54 is mounted such that the longitudinal centre of the middle floor section 54 is located directly beneath the interface between the inner floor section 52 and the hatch cover 56 as shown in Figure 9.
  • FIG 11 is an illustration of a close up view of a portion of the adjustable scaffold shown in Figure 8.
  • the hatch cover 56 is connected to the end member 24 by a pair of hinges 58. When folded up, the hatch cover 56 is accommodated between the legs 10, and rests against the railing gates 40.
  • Figure 12 is an illustration of the adjustable scaffold of Figure 1 with a railing assembly removed. In some situations, it is desirable to remove one or both of the railing assemblies 30. Equally, one or both of the railing gates 40 can be removed or opened. For storage, typically all of the railing assemblies 30 and railing gates 40 are removed from the scaffold 1. The legs 10 fold to lie flat against the scaffold 1 as will be described further with reference to Figure 14.
  • Figure 13 is an illustration of a railing assembly member for use in the adjustable scaffold of any of Figures 1 to 12.
  • the railing assembly 30 is substantially as described previously, but has been removed from the scaffold 1 for storage, or for a particular task of the scaffold 1 where a railing assembly is not required.
  • the railing assembly 30 is attached to the centre longitudinal member 22 using mounting holes, bolts and nuts.
  • Figure 14 is an illustration showing the operation of the pivoting legs as used on an adjustable scaffold of the type shown in Figures 1 to 12.
  • One pair of collars 12 are provided with a collar upper hole 62 and a collar lower pivot 64.
  • the collar lower pivot 64 is pivotably attached to an end of the extensible member 20.
  • a securing pin (not shown) can be used to secure the collar upper hole 62 in alignment with the frame upper hole 63 to position the pair of collars 12 in an upright position.
  • the other pair of collars 12 are provided with a collar upper pivot 66 and a collar lower hole 68.
  • the collar upper pivot 66 is pivotably attached to an opposite end of the extensible member 20.
  • a securing pin (not shown) can be used to secure the collar lower hole 68 in alignment with the frame lower hole 69 to position the other pair of collars 12 in an upright position.
  • the scaffold 1 is configured such that one pair of collars (and associated pair of legs 10) is capable of folding to lie flat on top of the scaffold 1 , and one pair of collars (and associated pair of legs 10) is capable of folding to lie flat beneath the scaffold 1.
  • the top-folding legs 10 are slid all the way up so that the stop plate 19 is against the collars and the legs 10 protrude very little outside the footprint of the scaffold 1.
  • the under-folding legs 10 are slid all the way down so that only a small amount of the legs 10 protrudes outside the footprint of the scaffold 1.
  • FIG 15 is an illustration of a further embodiment of an adjustable scaffold 101 in a splayed legs configuration.
  • the adjustable scaffold 101 is substantially as described with reference to the embodiment of Figure 1 and like numbers represent like components, apart from the hereinafter described differences.
  • the adjustable scaffold 101 comprises a support frame, the support frame comprising a first spaced member and a second spaced member, in the form of end members 124.
  • the support frame further comprises two extensible members 120, each joining a respective end of one end member 124 to the respective end of the other end member 124. In this way, each extensible member 120 runs in a longitudinal direction of the adjustable scaffold 101.
  • a floor (not shown) is supported on the support frame to provide a working platform.
  • a railing assembly 130 is configured to be attachable to the support frame and extends upwards from the support frame, whereby to provide a safety rail for the adjustable scaffold 101.
  • the adjustable scaffold 101 further comprises railing gates 140 to ensure the floor of the adjustable scaffold 101 is fully enclosed to prevent the inadvertent passage of users or equipment off the adjustable scaffold 101.
  • the adjustable scaffold 101 further comprises four leg members 110 connected to the support frame at respective ends of the end members 124. In this way, the leg members 1 10 are arranged two each on each longitudinal side of the adjustable scaffold 101.
  • Each leg member 110 is formed from metal box section.
  • a plurality of spaced holes is defined in opposing sides of each leg member 1 10 for securing the leg members 1 10 to the respective ends of the end members 124 at the desired leg extension.
  • Each leg member 1 10 is provided with a foot 190 provided at a lower end of the leg member 1 10.
  • the two leg members 110 on a first longitudinal side of the adjustable scaffold 101 are connected together by a lower leg connecting member 180.
  • the two leg members 110 on a second longitudinal side of the adjustable scaffold 101 may also be connected together by a further lower leg connecting member 180.
  • a lower leg connecting member 180 can be used to stabilise the adjustable scaffold 101.
  • the lower leg connecting member 180 comprises an extensible connecting member 182, whereby to connect the leg members 1 10 together at all extension positions of the adjustable scaffold 101.
  • An extension clamp is provided in the form of a screw fastener 183 to fix the extension length of the extensible connecting member 182.
  • the lower leg connecting members 180 further comprise bracing portions at each end.
  • the bracing portions are formed from a transverse member 184 extending transversely from the end of the extensible connecting member 182 and a bracing member 186 connecting an end of the transverse member 184 to a point on the extensible connecting member 182 away from the end of the extensible connecting member 182.
  • the lower leg connecting members 180 are releasably connected to the leg members 110 using upper screw fasteners 187 and lower screw fasteners 185.
  • the screw fasteners 183, 185, 187 are each configured to be hand tightened and loosened by a user to facilitate easy assembly, disassembly and reconfiguration of the adjustable scaffold 101. In this particular configuration an upper end of each leg member 110 is connected to the end members 124 in a splayed configuration.
  • the leg members 110 extend from the end members 124 at an angle away from the vertical.
  • the leg members 110 extend outwardly from the footprint of the support frame. In this way, the adjustable scaffold 101 is provided with a wider, and more stable base than if the leg members 1 10 extended only vertically away from the end members 124.
  • Figures 16a and 16b show the adjustable scaffold 101 of Figure 15 in different configurations and from an end-on view. It will be seen that the configuration shown in Figure 16a is similar to that of Figure 15, in that all leg members 1 10 are positioned in a splayed configuration, providing a wide and stable base for the adjustable scaffold 101. However, the configuration shown in Figure 16a differs from that shown in Figure 15 because the adjustable scaffold 101 in Figure 16a is shown in an extended configuration, with a greater spacing between the end members 124.
  • the configuration shown in Figure 16b shows two of the leg members 1 10 on one longitudinal side of the adjustable scaffold 101 shown in a non-splayed configuration.
  • leg members 110 on this longitudinal side of the adjustable scaffold 101 extend vertically downwards from the end members 124.
  • the leg members 1 10 on the other side of the adjustable scaffold 101 extend in a splayed configuration.
  • An adjustable scaffold 101 in this configuration is particularly useful when working with one longitudinal side of the adjustable scaffold 101 substantially abutting a wall. If both sets of leg members 1 10 were splayed, the working platform of the adjustable scaffold 101 would be positioned away from the surface of the wall, which may not be safe for carrying out work on the surface of the wall from the adjustable scaffold 101.
  • an effective length of the splayed legs may need to be increased in order to maintain a level working platform of the adjustable scaffold 101 , even when the adjustable platform 101 is positioned on an even surface, such as a floor surface inside a building.
  • the feet 190 may be extendable, in order to ensure the working platform of the adjustable scaffold 101 is level.
  • the feet 190 are extendible using a screw mechanism with a threaded connection (not shown) between the foot 190 and the leg member 110. An axis of the threaded connection runs along the leg member 110.
  • the effective length of the leg members 110 is adjustable over a range of 50 millimetres. It will be appreciated that alternative mechanisms for adjusting the effective length of the leg member 1 10 will be apparent to the person skilled in the art. Where the adjustable scaffold 101 is used as a stairwell platform, it will be appreciated that the lower leg connecting members 180 may not be required. Furthermore, it will be appreciated that only leg members 1 10 near a first end of the adjustable scaffold 101 will be required to support the adjustable scaffold 101. In this case, it is envisaged that only a single leg member 110 of the adjustable scaffold 101 may be provided in a splayed configuration, particularly where the structure of the staircase is such that the splayed leg member may extend to a lower step than the non-splayed leg member.
  • Figure 17 is a close-up view of a leg splay mechanism for the adjustable scaffold 101 shown in Figures 15 to 16b.
  • Figures 18 and 19 are further views of the leg splay mechanism shown in Figure 17.
  • the end members 124 have defined therein upper openings 126 at each end of an upper surface of each respective end member 124.
  • the end members 124 also have defined therein (not fully shown, but apparent from Figure 17) lower openings at each end of a lower surface of each respective end member 124.
  • Each lower opening is aligned with each respective upper opening 126 and is just larger than a profile of the leg member 110, whereby to allow the leg member 1 10 to slidably pass through the upper opening 126 and the lower opening.
  • leg member 1 10 In a straight-leg configuration (as shown in the left-hand leg members shown in Figure 16b), the leg member 1 10 is arranged to pass through both the upper opening 126 and the lower opening. In this way, a direction of the leg member 110 is arranged to be substantially vertical (and substantially normal to the working platform of the adjustable scaffold 101).
  • a drop-nose pin (not shown) may be used to secure the leg member 1 10 to the end member 124 at one of a discrete range of leg extension amounts.
  • the leg member 1 10 In a splayed-leg configuration, the leg member 1 10 is extended so that a top of the leg member 1 10 passes through the lower opening, but not through the upper opening 126.
  • the leg member 110 is then splayed outwardly at an angle of approximately 5 degrees to abut the top of the leg member 1 10 against an inner edge of the upper opening 126.
  • a drop-nose pin 128 passes through holes defined in end walls of the end member 124 and in the leg member 110 whereby to secure the leg member 110 in the splayed-leg configuration.
  • Two plate members 129 are welded at each end of an inside surface of the end member 124.
  • the plate members 129 have defined therein a plate upper hole 162 and a plate lower hole 168 and are spaced to receive an end of the extensible member 120 therebetween.
  • An upper drop-nose pin 172 and a lower drop-nose pin 174 are configured to pass through the plate upper hole 162 and the plate lower hole 172 respectively (and through holes defined in the extensible member 120) whereby to secure the end member 124 to the extensible member 120.
  • the leg members 1 10 may be folded below or above the extensible member 120 by removing one or the other of the upper drop-nose pin 172 and the lower drop-nose pin 174.
  • the leg members 110 may be folded to lie on top of the extensible member 120 by sliding the leg members 110 through the upper opening 126 such that a bottom of the leg members 1 10 is substantially flush with a lower surface of the end member 124.
  • a further drop-nose pin is used to secure the leg member 1 10 in this position.
  • the lower drop-nose pin 174 is then removed, allowing the leg members 1 10 and end member 124 to pivot about the upper drop-nose pin 174 whereby to lie the leg members 110 flat against a top surface of the extensible member 120.
  • the railing assembly 130 and the railing gates 140 are removed from the adjustable scaffold 101 prior to folding of the leg members 110 and the end members 124.
  • the height of the adjustable scaffold 101 is adjustable between a first range of heights where each of the leg members 110 is vertically slidable within a collar formed by the upper openings 126 and the lower openings in the end members 124. While the leg members 1 10 pass through the upper openings 126, the adjustable scaffold cannot be configured into the splayed-leg configuration as the leg members 110 are constrained to slide in a vertical direction. Only when a top of the leg member 110 is slid downwards to lie beneath the upper opening 126 can the leg member 1 10 be splayed outwardly and the top of the leg member 110 received within a cavity provided in the end member 124 beneath the upper opening 126 and inwardly of an inner boundary of the upper opening 126.
  • the floor 50 may, in some embodiments comprise only a hatch cover hingedly mounted to an end member of the adjustable scaffold, and at least one further floor section mountable on the extensible member between an end of the hatch cover and an opposite end member of the adjustable scaffold.
  • the presently described embodiments feature joints of specific types, it will be appreciated that members of the scaffold 1 may be joined in other ways, for example bolting, welding, integral formation, etc.
  • the presently described embodiments feature mechanisms of specific types, it will be appreciated that the functions and operations of the scaffold 1 may be achieved using alternative mechanisms, for example telescoping sliding arrangements, side-by-side sliding arrangements, living hinges, clamps, etc.
  • an extensible scaffold comprises a support frame comprising a first spaced member 24 and a second spaced member 24 and at least one extensible member 20 extensibly connecting the first spaced member to the second spaced member.
  • a first platform member 54 is mounted to the extensible member 20 and configured to provide a first portion of a platform on the support frame.
  • a hatch cover 56 is hingedly mounted to the first spaced member and slidable relative to the first platform member 54 and configured to provide a second portion of the platform on the support frame. The hatch cover 56 is arranged to be openable to provide access through the support frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne un échafaudage extensible qui comprend un cadre de support comprenant un premier élément espacé (24) et un second élément espacé (24) et au moins un élément extensible (20) reliant de façon extensible le premier élément espacé au second élément espacé. Un premier élément de plateforme (54) est monté sur l'élément extensible (20) et est conçu pour fournir une première partie d'une plateforme sur le cadre de support. Un couvercle de trappe (56) est monté de manière articulée sur le premier élément espacé, et peut coulisser par rapport au premier élément de plateforme (54) et est configuré pour fournir une seconde partie de la plate-forme sur le cadre de support. Le couvercle de trappe (56) est conçu pour pouvoir être ouvert pour fournir un accès à travers le cadre de support.
PCT/GB2016/050783 2015-03-20 2016-03-21 Échafaudage réglable WO2016151307A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1504769.9A GB2536629B (en) 2015-03-20 2015-03-20 Adjustable scaffold
GB1504769.9 2015-03-20

Publications (1)

Publication Number Publication Date
WO2016151307A1 true WO2016151307A1 (fr) 2016-09-29

Family

ID=53052158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2016/050783 WO2016151307A1 (fr) 2015-03-20 2016-03-21 Échafaudage réglable

Country Status (2)

Country Link
GB (1) GB2536629B (fr)
WO (1) WO2016151307A1 (fr)

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CN109779220A (zh) * 2019-01-24 2019-05-21 温州华睿建设有限公司 房建搭载架
WO2020254779A1 (fr) 2019-06-19 2020-12-24 Oxford Safety Components Limited Appareil de support
US11643828B2 (en) 2017-10-13 2023-05-09 Oxford Safety Components Limited Support apparatus

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US11859397B1 (en) * 2017-04-17 2024-01-02 Direct Scaffold Supply, Llc Locking mechanisms and wedge system for adjustable toe board
CN107859313A (zh) * 2017-09-22 2018-03-30 常熟市苏南中江钢结构有限公司 一种可升降折叠式脚手架

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US20050103569A1 (en) * 2003-11-13 2005-05-19 Steven Winter Expandable scaffold with wheel lock

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US4620612A (en) * 1983-07-31 1986-11-04 Nisso Sangyo Co., Ltd. Expansible corridor
DE3824922A1 (de) * 1988-07-22 1990-01-25 Langer Ruth Geb Layher Holzleiterngeruest mit aufstiegseinrichtungen
GB2479202A (en) * 2010-04-01 2011-10-05 James Lawrence Weston Collapsible scaffolding tower
NO334607B1 (no) * 2010-08-11 2014-04-22 Beerenberg Corp As Regulerbar kantdefinerende barriere.
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US2751258A (en) * 1953-07-30 1956-06-19 Brattland Daniel Scaffold
US4371057A (en) * 1980-12-16 1983-02-01 100426 Canada Ltee. Telescopic scaffold
US20050103569A1 (en) * 2003-11-13 2005-05-19 Steven Winter Expandable scaffold with wheel lock

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11643828B2 (en) 2017-10-13 2023-05-09 Oxford Safety Components Limited Support apparatus
CN109779220A (zh) * 2019-01-24 2019-05-21 温州华睿建设有限公司 房建搭载架
WO2020254779A1 (fr) 2019-06-19 2020-12-24 Oxford Safety Components Limited Appareil de support

Also Published As

Publication number Publication date
GB2536629B (en) 2018-02-14
GB2536629A (en) 2016-09-28
GB201504769D0 (en) 2015-05-06

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