Field of the Invention
[0001] The present invention relates to a bracket for an access platform and in particular
but not exclusively for a modular access platform. The present invention also relates
to a frame for an access platform and in particular but not exclusively for a modular
access platform, the frame comprising at least one bracket and plural elongate members.
The present invention further relates to an access platform and in particular but
not exclusively a modular access platform comprising at least one bracket.
Background Art
[0002] Suspended access platforms are known. A typical suspended access platform comprises
horizontally and vertically extending tubular members which are mechanically coupled
to each other such that they extend orthogonally to each other to form a frame of
appropriate length and width. Cross braces which extend diagonally between spaced
apart horizontally extending tubular members are often used to increase rigidity.
Decking is then laid on the thus formed frame to provide a support surface from which
work may be done.
[0003] Double couplers are widely used to connect two orthogonally extending tubular members
to each other. A double coupler comprises first and second clamps which are each configured
to clamp around a different one of two tubular members with the apertures defined
by the first and second clamps when closed being oriented orthogonally to each other.
A double coupler is therefore operative as a bracket to support one tubular member
on another tubular member. Joining a main tubular member which extends along the length
of an access platform to first and second tubular members which extend in opposite
directions across the width of the access platform therefore involves using a first
double coupler to connect the main tubular member to the first tubular member and
a second double coupler to connect the main tubular member to the second tubular member
with the first and second double couplers being clamped at locations which are spaced
apart from each other by a small distance along the main tubular member.
[0004] The present inventors have recognised that the above described approach of using
the like of double couplers as brackets to join and support tubular members has disadvantages.
The present invention has been devised in the light of the inventors' appreciation
of such shortcomings. It is therefore an object for the present invention to provide
an improved bracket for a modular access platform. It is a further object for the
present invention to provide a frame for a modular access platform, the frame comprising
at least one improved bracket and plural elongate members. It is a yet further object
for the present invention to provide a modular access platform comprising at least
one improved bracket.
Statement of Invention
[0005] According to a first aspect of the present invention there is provided a bracket
for an access platform, the bracket comprising:
a main body defining a channel configured to receive and provide a close fit around
an elongate member of an access platform; and
first and second connection arrangements mechanically coupled to the main body and
extending from oppositely directed sides of the main body, each connection arrangement
being configured to mechanically couple to a further elongate member of the access
platform.
[0006] The bracket is brought into use by, for example, receiving an elongate member, such
as a scaffolding tube, in the channel defined by the main body. The channel is configured
such that it is a close fit around the elongate member. First and second connection
arrangements are mechanically coupled to the main body and extend from oppositely
directed sides of the main body. Then a first further elongate member, such as further
scaffolding tube, is mechanically coupled to the first connection arrangement and
a second further elongate member is mechanically coupled to the second connection
arrangement such that the first and second further elongate members extend from oppositely
directed sides of the main body. The bracket may be configured such that the first
and second further elongate members extend away from the elongate member received
in the channel of the main body. The bracket may thus be operative to support the
first and second further elongate members from the elongate member received in the
channel of the main body. In contrast with the known double coupler described above,
only one bracket according to the invention is required to couple three elongate members
to each other.
[0007] Plural brackets according to the invention may be used in this fashion to form an
access platform. The bracket is therefore configured to form part of an access platform
and more specifically a suspended access platform. The bracket may be for a temporary
access platform. Temporary suspended access platforms are often used where installation
or maintenance operations are being carried out at a location where it is impracticable
to provide ground supported access platforms. The access platform may be modular to
thereby provide for ease of configuration of the access platform for the application
to hand and perhaps also for ease of installation of the access platform before work
commences and of removal of the access platform when work is complete.
[0008] The bracket may be configured such that the first and second connection arrangements
are aligned with each other. The first and second connection arrangements may therefore
extend from corresponding locations on oppositely directed sides of the main body.
In use, proximal ends of elongate members that are mechanically coupled to the first
and second connection arrangements may be in registration with each other. The bracket
may be configured such that, in use, longitudinal axes of the first and second further
elongate members are aligned.
[0009] The bracket may be configured such that, in use, at least one of the first and second
further elongate members may extend orthogonally of an elongate member received in
the channel of the main body. More specifically both of the first and second further
elongate members may extend orthogonally of an elongate member received in the channel
of the main body. Therefore the first further elongate member may be orthogonal to
the elongate member received in the channel and the second further elongate member
may be orthogonal to the elongate member received in the channel.
[0010] The channel defined by the main body may be an open channel. More specifically the
channel may be open at a side opposite a base of the channel. The channel may be open
at each end of the channel. When an elongate member is received in the channel the
channel may therefore straddle the elongate member. The channel may be of substantially
rectangular cross-section. The channel may be configured to receive and provide a
close fit around a standard scaffolding tube such as tube of 48.3 mm outer diameter.
[0011] The main body may comprise first and second main plates which are spaced apart from
each other. The first and second main plates may be of substantially the same shape.
An edge of each of the first and second main plates may be joined to each other by
a base member. The first and second main plates may define opposing surfaces which
are substantially parallel to each other. The base member and the first and second
main plates may thus define the channel. The base member and the first and second
main plates may be integrally formed. More specifically the base member and the first
and second main plates may be formed by shaping a sheet of metal. The main body may
be formed from steel, such as structural steel and more specifically S700 grade steel.
The main body may be configured, such as in respect of at least one of its shape,
dimensions and material, such that distal ends of the first and second main plates
flex. Flexing of the first and second main plates may provide for a tight fit of the
channel around the elongate member received in the channel.
[0012] The first and second main plates may extend further along the direction of the channel
than the base member. More specifically the first and second main plates may extend
further than the base member at each of two oppositely directed ends of the base member.
The first and second main plates may extend further than the base member at each of
two oppositely directed ends of the base member by substantially a same amount. Where
the first and second main plates are of substantially the same shape, the main body
may be substantially symmetrical about a plane which extends orthogonal to the channel
half way along the base member. The base member may be generally and more specifically
substantially square when looking into the channel towards the base member. Each of
the first and second main plates may be configured such that an edge of the main plate
which extends beyond the base member and which is oriented towards the channel defining
surface of the base member may be spaced apart from the channel defining surface of
the base member in a depth-wise direction of the channel. A part of each of the first
and second main plates which joins to the base member may therefore be higher than
a part of the main plate which extends beyond the base member. Configuring the main
plates in this fashion may save on material used to form the main plates.
[0013] Each of the first and second main plates may define first and second apertures which
are spaced apart from each other along the direction of the channel. The first and
second apertures may be spaced apart from each other by a distance greater than an
outer diameter of an elongate member such as a standard scaffolding tube. The bracket
may therefore be secured to an elongate member such that the bracket extends across
another member, such as a bracing member, which extends from the elongate member and
such that the bracket can be secured to the elongate member on opposite sides of the
other member. The first apertures of the first and second main plates may be in registration
with each other and the second apertures of the first and second main plates may be
in registration with each other. The first apertures may therefore cooperate with
each other and the second apertures may cooperate with each other in securing the
main body to an elongate member received in the channel.
[0014] The first apertures may be disposed towards a first end of the main plates and the
second apertures may be disposed towards a second, opposite end of the main plates.
The first and second apertures may be disposed towards a distal edge of the main plates
and the main plates may be of sufficient height that the base member and the apertures
are on opposite sides of an elongate member such as a standard scaffolding tube. The
bracket may further comprise first and second securing arrangements, such as a nut
and bolt arrangement. The first securing arrangement may mechanically couple with
the first apertures in the first and second main plates such that, for example, an
elongate member in the channel is held between the base member and the first securing
arrangement. Likewise, the second securing arrangement may mechanically couple with
the second apertures in the first and second main plates such that, for example, an
elongate member in the channel is held between the base member and the second securing
arrangement.
[0015] The base member may define a base aperture. The base aperture may be located generally
and more specifically substantially centrally in the base member. The base aperture
may in cooperation with a securing arrangement, such as a nut and bolt arrangement,
provide for attachment of a decking component to the base member. Decking may thus
be attached to a frame comprising at least one bracket to thereby form a surface from
which work may be done.
[0016] The first and second connection arrangements may be rigidly coupled to the main body.
The first and second connection arrangements may be formed separately from the main
body and then coupled to the main body, for example, by welding.
[0017] Each of the first and second connection arrangements may define a recess for receiving
a further elongate member. The recess may be defined in part by opposing surfaces
of a connection arrangement. The opposing surfaces may be sides of the recess. The
recess may be further defined by an exterior surface of the main body from which the
connection arrangement extends. The exterior surface may be a base of the recess.
A connection arrangement may comprise first and second spaced apart connector plates.
The first and second connector plates may be spaced apart by a distance sufficient
to admit an elongate member, such as a standard scaffolding tube, therebetween. The
first and second connector plates may be of substantially a same shape. The first
and second connector plates may be aligned with each other. Each of the first and
second connector plates may have the form of lugs which abut at one end against the
main body and extend from the main body.
[0018] A connector arrangement is configured to mechanically couple to a further elongate
member, such as a standard scaffolding tube. Where the connector arrangement comprises
first and second connector plates, each of the first and second connector plates may
define a first connector aperture with the first connector apertures being in registration
with each other. The first connector apertures may be operative in cooperation with
a securing arrangement, such as a nut and bolt arrangement, to secure the connector
arrangement to an elongate member such as by way of an aperture formed in the elongate
member which is in registration with the first connector apertures. Each of the first
and second connector plates may define a second connector aperture spaced apart from
the first connector aperture either towards or away from the main body, with the second
connector apertures being in registration with each other. The second connector apertures
may be operative in cooperation with a securing arrangement to attach the elongate
member to the connector arrangement more securely. In a particular application, an
aperture may be formed towards an end of an elongate member at a location and the
elongate member may be attached to the first and second connector plates by way of
the aperture formed in elongate member such that the elongate member is pivotable
in relation to the bracket about an axis defined by the aperture formed in the elongate
member. Then the elongate member may be secured against pivoting in relation to the
bracket by way of a second aperture which is formed in the elongate member at a location
spaced along the elongate member from the first aperture and which cooperates with
the second pair of apertures formed in the first and second connector plates.
[0019] The first and second connection arrangements may comprise a first integrally formed
arrangement and a second integrally formed arrangement. Each connection arrangement
may be formed from steel, such as structural steel and more specifically S700 grade
steel. Each of the first and second integrally formed arrangements may be spaced apart
from each other and may be configured when attached to the main body to extend from
oppositely directed sides of the main body to thereby constitute the first and second
connection arrangements. Each integrally formed arrangement may be formed from sheet
metal. Each integrally formed arrangement may therefore have the form of a plate.
The first and second integrally formed arrangements may be of substantially the same
shape. Each integrally formed arrangement may comprise first and second lugs which
are spaced apart from each other and joined by a bridge element, the first and second
lugs and the bridge element all lying in the same plane. A main body recess may be
defined by opposing edges of the first and second lugs and an edge of the bridge element.
The main body recess may be configured to receive the main body. More specifically
and where the main body comprises a base member, the main body recess defining edge
of the bridge element may abut against the base member. The main body recess defining
edge of the bridge element may abut against the surface of the base member oriented
away from the channel defined by the main body. Such a configuration may transmit
forces exerted on one connection arrangement to the other connection arrangement and
thereby provide for distribution and balancing of forces.
[0020] Each of the first and the second integrally formed arrangements and the main body
may comprise inter-engaging profiles which cooperate to restrict movement of the integrally
formed arrangement relative to the main body in at least one of: the direction of
the channel; and a direction orthogonal to the channel and a depth-wise direction
of the channel. The integrally formed arrangement may comprise a protrusion, for example
on the bridge element, and the main body may comprise a recess, for example in the
base member, the protrusion being configured to be received at least in part in the
recess.
[0021] According to a second aspect of the present invention there is provided a frame for
an access platform, the frame comprising at least one bracket according to the first
aspect of the present invention and at least three elongate members which are coupled
to each other by way of the at least one bracket.
[0022] Embodiments of the second aspect of the present invention may comprise one or more
features of the first aspect of the present invention.
[0023] According to a third aspect of the present invention there is provided an access
platform comprising plural brackets according to the first aspect of the present invention
and plural elongate members, each of the plural brackets being operative to couple
three of the plural elongate members to each other. As described above, the access
platform may be a suspended access platform. Alternatively or in addition, the access
platform may be a modular access platform.
[0024] Embodiments of the third aspect of the present invention may comprise one or more
features of the first aspect of the present invention.
[0025] According to a further aspect of the present invention there is provided a bracket
for an access platform, the bracket comprising: a main body defining a channel configured
to receive an elongate member; and at least one connection arrangement mechanically
coupled to the main body and extending from a side of the main body, the connection
arrangement being configured to mechanically couple to a further elongate member.
Embodiments of the further aspect of the present invention may comprise one or more
features of any previous aspect of the present invention.
Brief Description of Drawings
[0026] Further features and advantages of the present invention will become apparent from
the following specific description, which is given by way of example only and with
reference to the accompanying drawings, in which:
Figure 1 shows a frame for an access platform comprising plural brackets according
to the invention;
Figure 2 is a partial view of the frame of Figure 1 showing one bracket in detail;
Figure 3A is a perspective view of the bracket of Figure 2;
Figure 3B is a plan view of the bracket of Figure 3A;
Figure 3C is a view from one end of the bracket of Figure 3A;
Figure 3D is a view from one side of the bracket of Figure 3A;
Figure 4A is a perspective view of the main body of the bracket of Figure 2;
Figure 4B is a plan view of the main body of Figure 4A;
Figure 4C is a view from one end of the main body of Figure 4A;
Figure 4D is a view from one side of the main body of Figure 4A;
Figure 5A is a perspective view of a connection plate of the bracket of Figure 2;
Figure 5B is a plan view of the connection plate of Figure 5A;
Figure 5C is a view from one end of the connection plate of Figure 5A; and
Figure 5D is a view from one side of the connection plate of Figure 5A.
Description of Embodiments
[0027] A frame 10 for an access platform is shown in Figure 1. The frame 10 for the access
platform is of a form that is suspended by suspension brackets (not shown) which are
mechanically coupled at spaced apart locations to the frame 10. The frame 10 comprises
five planar frames. Two of the planar frames 12 are spaced apart from each other and
extend lengthwise along the frame 10. The remaining three planar frames 14 extend
width-wise between the two lengthwise extending planar frames 12. One of the width-wise
extending planar frames 14 is located towards one end of the frame 10. A second width-wise
extending planar frame 14 is located towards the opposite end of the frame 10. The
third width-wise extending planar frame 14 is located half way along the frame 10.
The access platform further comprises decking components (not shown) which are attached,
as described further below, to the top of the frame 10 shown in Figure 1 to form a
planar surface from which work can be done.
[0028] Each of the five planar frames 12, 14 comprises two spaced apart and horizontally
extending tubes 16 (which constitute elongate members) and plural vertically extending
tubes 18 (which constitute elongate members) which extend between the horizontally
extending tubes 16. Each of the five planar frames 12, 14 further comprises cross
braces 20 which extend diagonally between horizontally and vertically extending tubes
to thereby increase the rigidity of the planar frame. The horizontally and vertically
extending tubes 16, 18 are of standard scaffolding form. In the present embodiment
the horizontally and vertically extending tubes 16, 18 have an outer diameter of 48.3
mm and are formed of either aluminium or stainless steel. The horizontally and vertically
extending tubes 16, 18 and the cross braces 20 of each planar frame 12, 14 are connected
rigidly to each other by welding. Each width-wise extending planar frame 14 is connected
at each of two ends to a lengthwise extending planar frame 12 by a pair of first and
second brackets 22, 24. The first and second brackets 22, 24 are of the same form
and function. The first bracket 22 in a pair connects the upper horizontally extending
tube 16 of the width-wise extending planar frame 14 to the upper horizontally extending
tube 16 of the lengthwise extending planar frame 12 and the second bracket 24 in a
pair connects the lower horizontally extending tube 16 of the width-wise extending
planar frame 14 to the lower horizontally extending tube 16 of the lengthwise extending
planar frame 12. Although not shown in Figure 1 and as will become apparent from the
following description, each bracket 22, 24 is configured to connect to a horizontally
extending tube of a further width-wise extending planar frame (not shown) further
to the horizontally extending tube of the width-wise extending planar frame 14 shown
in Figure 1. A wider frame than the frame 10 shown in Figure 1 may thus be formed
wherein horizontally extending tubes of two different width-wise extending planar
frames are connected to and extend from opposite sides of a bracket 22, 24.
[0029] A partial view of the frame 10 of Figure 1 is shown in Figure 2. The partial view
shows one bracket 22 in detail. Components of Figure 2 in common with Figure 1 are
designated with like reference numerals. The reader's attention is therefore directed
to Figure 1 for a description of such common components. As can be seen from Figure
2, the bracket 22 comprises a main body 42 which defines a channel that is configured
to receive and provide a close fit around the upper horizontally extending tube 16
of the lengthwise extending planar frame 12. The main body 42 comprises a nut 44 which
is attached to the top of the main body 42. The nut 44 along with nuts of other brackets
provide for securing of decking components to the top of the frame 10. The main body
42 is described further below with reference to Figures 3A to 3D. First and second
connection arrangements 46, 48 extend from oppositely directed sides of the main body
42 in directions orthogonal to the channel defined by the main body 42 and hence orthogonal
to the upper horizontally extending tube 16 of the lengthwise extending planar frame
12. The first and second connection arrangements 46, 48 are described further below
with reference to Figures 3A to 3D. First and second tubular struts 50, 52 of moderate
length are fastened at one end by way of two nut and bolt arrangements to a respective
one of the first and second connection arrangements 46, 48. As can be seen in Figure
2, the distal end of the second tubular strut 52 is received inside an end of the
horizontally extending tube 16 of the width-wise extending planar frame 14 and secured
to the end of the horizontally extending tube 16 by way of three nut and bolt arrangements
which are received in aligned apertures formed in and spaced apart along the distal
end of the second tubular strut 52 and the end of the horizontally extending tube.
Although not shown in Figure 2 and as described above with reference to Figure 1,
a horizontally extending tube of a width-wise extending planar frame is attached in
the same fashion to the first tubular strut 50.
[0030] Figures 3A to 3D respectively provide a perspective view, a plan view, a view from
one end and a view from one side of the bracket of Figure 2. Components of Figures
3A to 3D in common with Figure 2 are designated with like reference numerals. The
bracket 22 comprises a main body 42, a first connection arrangement 46 and a second
connection arrangement 48. The first and second connection arrangements 46, 48 extend
from corresponding locations on oppositely directed sides of the main body 42 in directions
orthogonal to the channel defined by the main body 42. As can be seen from Figures
3A and 3C, the channel 62 defined by the main body 42 is open at a side opposite a
base of the channel and open at each end of the channel. Furthermore the channel 62
is of substantially rectangular cross-section. The width of the channel is 48.9 mm
whereby the channel is configured to receive and provide a close fit around a standard
scaffolding tube of 48.3 mm outer diameter.
[0031] The main body will now be described in more detail with reference to Figures 4A to
4D as well as Figures 3A to 3D. Figures 4A to 4D respectively provide a perspective
view, a plan view, a view from one end and a view from one side of the perspective
view of the main body of the bracket shown in Figures 3A to 3D. The main body 42 comprises
a base member 64, a first main plate 66 and a second main plate 68. The first and
second main plates 66, 68 are of substantially the same shape and spaced apart from
each other to define the channel 62 therebetween. An edge of each of the first and
second main plates 66, 68 are joined to each other by the base member 64 whereby the
base member defines the base of the channel 62. The base member 64 and the first and
second main plates 66, 68 are formed by shaping a sheet of S700 grade steel. Furthermore
the main body 42 is configured in respect of its thickness of 4 mm such that distal
ends of the first and second main plates 66, 68 flex to a small extent. Flexing of
the first and second main plates provides for a tight fit of the channel around the
elongate member received in the channel when the nut and bolt arrangements described
below are tightened. The base member 64 is substantially square when looking into
the channel towards the base member with a length of 60 mm along the channel and a
width of 56.9 mm between the first and second main plates.
[0032] The first and second main plates 66, 68 extend further along the direction of the
channel 62 than the base member 64 by a same amount of 44.35 mm at each of two oppositely
directed ends of the base member. As one progresses along each of the first and second
main plates 66, 68 in either direction away from the base member 64, an edge of the
main plate drops away from the base member whereby the part of the main plate that
extends beyond the base member is narrower than the part of the main plate that is
joined to the base member. The opposing, i.e. bottom, edge of the main plate is straight
between near the distal ends of the main plate. The distal ends of the main plate
are rounded. Each of the first and second main plates 66, 68 is 148.7 mm long and
84 mm high at the part of the main plate that is joined to the base member 64. The
parts of the main plate that extend beyond the base member 64 are each 45.7 mm high.
[0033] Each of the first and second main plates 66, 68 define first and second apertures
70, 72 which are spaced apart from each other along the direction of the channel 62
by 100 mm. The first apertures 70 are therefore disposed towards a first end of the
main plates and the second apertures 72 are disposed towards a second, opposite end
of the main plates. The first apertures 70 of the first and second main plates 66,
68 are in registration with each other and the second apertures 72 of the first and
second main plates 66, 68 are in registration with each other. A spacing of 100 mm
between the first and second apertures 70, 72 allows the bracket 22 to be secured
to a tube in a frame such that the channel spans a vertically extending tube and perhaps
also bracing members which extend from the horizontally extending tube and such that
the bracket can be secured to the tube on opposite sides of the vertically extending
tube and perhaps also bracing members. As described above, as one progresses along
each of the first and second main plates 66, 68 in either direction away from the
base member 64, an edge of the main plate drops away from the base member. A centre
of each of the first and second apertures 70, 72 is therefore spaced apart from the
plane defined by the base member 64 by 61.15 mm whereby the base member and the apertures
70, 72 are on opposite sides of a standard scaffolding tube having an outer diameter
of 48.3 mm when the scaffolding tube is received in the channel 62. As described above
when a tube is received in the channel 62 the main body is attached to the tube by
way of nut and bolt arrangements which are received in the first and second apertures
70, 72 of the first and second main plates 66, 68.
[0034] The first and second connection arrangements of the main body will now be described
in more detail with reference to Figures 5A to 5D as well as Figures 3A to 3D. Figures
5A to 5D respectively provide a perspective view, a plan view, a view from one end
and a view from one side of the perspective view of a connection plate which forms
in part the first and second connection arrangements of Figures 3A to 3D. As can be
seen from Figures 3A to 3D, each of the first and second connection arrangements 46,
48 defines a recess for receiving an end of a scaffolding tube or an end of one of
the tubular struts 50, 52 shown in Figure 2. The sides of the recess are defined by
opposing surfaces of a connection arrangement 46, 48 with the base of the recess being
defined by an exterior surface of the main body 42 from which the connection arrangement
extends. The first and second connection arrangements 46, 48 are constituted by first
and second spaced connector plates 82 (which each constitute an integrally formed
arrangement) which are mounted on the main body 42 such that they are spaced apart
from each other. The first and second connector plates 82 are of substantially a same
shape and align with each other when mounted on the main body 42.
[0035] Each of the first and second connector plates 82 is formed from S700 grade steel.
Each of the first and second connector plates 82 is configured when mounted on the
main body to extend from oppositely directed sides of the main body 42 whereby both
connector plates 82 constitute the first and second connection arrangements 46, 48.
Each of the first and second connector plates 82 comprises first and second lugs 84,
86 which are spaced apart from each other and joined by a bridge element 88 with the
first and second lugs and the bridge element all lying in the same plane. A main body
recess 90 is defined by opposing edges of the first and second lugs 84, 86 and an
edge of the bridge element 88. The main body recess 90 is configured to receive the
main body 42 such that the main body recess defining edge of the bridge element 88
abuts against the base member 64.
[0036] Each of the first and second connector plates 82 defines a protrusion 92 on the edge
of the bridge element 88 that defines the main body recess 90 whereby the protrusion
extends into the main body recess. As can be seen from Figures 4A and 4B two recesses
94 are defined in the base member 64 of the main body 42 at locations spaced apart
along the channel 62. The dimensions of each recess 94 correspond to the dimensions
of the protrusions 92 defined by the first and second connector plates 82. Each of
the first and second connector plates 82 are mounted on the main body 42 such that
the main body is received in the main body recess 90 and the connector plate protrusion
92 is received in one of the two recesses 94 defined in the base member 64. Then the
first and second connector plates 82 are attached securely to the main body 42 by
welding. The inter-engagement of protrusions 92 and recesses 94 restricts movement
of the first and second connector plates 82 relative to the main body in the direction
of the channel 62 and a direction across the channel.
[0037] Each of the first and second connector plates 82 defines first and second connector
apertures 96, 98 on each of the first and second lugs 84, 86. The first and second
connector apertures 96, 98 are spaced apart along a direction away from the main body
recess 90. When the first and second connector plates 82 are mounted on the main body
42, the first connector apertures 96 of the two plates are in registration and the
second connector apertures 98 of the two plates are in registration. In use, an end
of a scaffolding tube or an end of one of the tubular struts 50, 52 shown in Figure
2, which has two apertures of a size and spacing corresponding to the first and second
connector apertures 96, 98, is received between opposing lugs of the first and second
connector plates 82. In a first form, when a nut and bolt arrangement is received
in one of the two apertures in the scaffolding tube or tubular strut and in a pair
of one of the first and second connector apertures 96, 98, the two apertures in the
scaffolding tube or tubular strut are provided at locations such that the end of the
tube or strut abuts against the side of the main body to thereby prevent rotation
of the scaffolding tube or tubular strut about the bolt in relation to the main body.
A second nut and bolt arrangement is then received in the other of the two apertures
in the scaffolding tube or tubular strut and in a pair of the other of the first and
second connector apertures 96, 98 to thereby attach the scaffolding tube or tubular
strut to the bracket 22 more securely. In a second form, when a first nut and bolt
arrangement is received in one of the two apertures in the scaffolding tube or tubular
strut and in a pair of one of the first and second connector apertures 96, 98, the
two apertures in the scaffolding tube or tubular strut are provided at locations such
that the end of the tube or strut is spaced apart from the side of the main body to
thereby allow rotation of the scaffolding tube or tubular strut about the first bolt
in relation to the main body. When two or more brackets 22 according to the second
form are employed, a frame 10 may be installed by assembling a frame sub-assembly
in an upright position before lowering the assembled frame sub-assembly by rotation
about the first bolts which couple plural scaffolding tubes or tubular struts to respective
brackets. When the assembled frame sub-assembly is lowered such that it is in line
with an already installed part of the frame 10, second nut and bolt arrangements are
then each received in the other of the two apertures in a scaffolding tube or tubular
strut and in a pair of the other of first and second connector apertures 96, 98 of
a respective bracket to thereby secure against rotation about the first bolts.
1. A bracket for an access platform, the bracket comprising:
a main body defining a channel configured to receive and provide a close fit around
an elongate member of an access platform; and
first and second connection arrangements mechanically coupled to the main body and
extending from oppositely directed sides of the main body, each connection arrangement
being configured to mechanically couple to a further elongate member of the access
platform.
2. A bracket according to claim 1 configured such that the first and second connection
arrangements are aligned with each other whereby the first and second connection arrangements
extend from corresponding locations on oppositely directed sides of the main body.
3. A bracket according to claim 1 or 2 configured such that, in use, longitudinal axes
of the further elongate members are aligned.
4. A bracket according to any one of the preceding claims configured such that, in use,
both of the further elongate members extend orthogonally of an elongate member received
in the channel of the main body.
5. A bracket according to any one of the preceding claims in which the main body comprises
first and second main plates which are spaced apart from each other and in which an
edge of each of the first and second main plates are joined to each other by a base
member.
6. A bracket according to claim 5 in which the main body is configured such that distal
ends of the first and second main plates flex.
7. A bracket according to claim 5 or 6 in which the first and second main plates extend
further than the base member at each of two oppositely directed ends of the base member.
8. A bracket according to any one of claims 5 to 7 in which the first and second main
plates are of substantially the same shape and the main body is substantially symmetrical
about a plane which extends orthogonal to the channel half way along the base member.
9. A bracket according to any one of the preceding claims in which each of the first
and second connection arrangements defines a recess for receiving a further elongate
member, the recess being defined in part by opposing surfaces of a connection arrangement
and the recess being further defined by an exterior surface of the main body from
which the connection arrangement extends.
10. A bracket according to any one of the preceding claims in which a connection arrangement
comprises first and second spaced apart connector plates, the first and second connector
plates being spaced apart by a distance sufficient to admit an elongate member therebetween.
11. A bracket according to any one of the preceding claims in which the first and second
connection arrangements comprise a first integrally formed arrangement and a second
integrally formed arrangement, each of the first and second integrally formed arrangements
being spaced apart from each other and being configured to extend from oppositely
directed sides of the main body to thereby constitute the first and second connection
arrangements.
12. A bracket according to claim 11 in which each of the first and the second integrally
formed arrangements and the main body comprise inter-engaging profiles which cooperate
to restrict movement of the integrally formed arrangement relative to the main body
in at least one of: the direction of the channel; and a direction orthogonal to the
channel and a depth-wise direction of the channel.
13. A bracket according to any one of the preceding claims in which the bracket is an
access platform bracket.
14. An access platform comprising plural brackets each according to any one of the preceding
claims and plural elongate members, each of the plural brackets being operative to
couple three of the plural elongate members to each other.
15. An access platform according to claim 14 in which the access platform is a suspended
access platform.