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
  • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
  • E04G21/14—Conveying or assembling building elements
• • 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
  • E04G21/14—Conveying or assembling building elements
  • E04G21/16—Tools or apparatus
  • E04G21/166—Landings, receiving 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
  • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
  • E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings

Definitions

• inboard and outboard are used hereinafter with reference to a building, in the sense that items designated as inboard are disposed, when in use, within the perimeter of a relevant floor of the building, whereas items designated as outboard project from the building when in use and are disposed outside of that perimeter.
• the terms are similarly used to designate the positions for the time being of movable items that may be inboard at one time and outboard at another.
• the invention consists in a construction platform comprising a stationary support structure adapted to be fixedly secured to a floor of a building under construction, a landing deck having an outermost edge carried by said support structure and able to move to and fro between at least one inboard and at least one outboard position relative to the building, immobilising means to releasably lock the deck in said at least one outboard position, and safety barrier means movable with the deck and extending along its said outermost edge.
• a self supporting deck may extend as a cantilever from the support structure when in its outboard position.
• the safety barrier means may comprise safety barriers extending along the side edges and the outermost edge of the deck and moving therewith.
• Figure 1 is a perspective view of three construction platforms according to the invention having retractable landing decks supported by a partly outboard support structure comprising semi-permanently erected beams.
• Figure 2 is a perspective view of the platforms of Figure 1 shown as used to load and unload a truck.
• Figure 3 is a perspective view of portion of a cantilever beam and deck immobilising means, being components of a platform of the kind depicted in figure 1.
• Figure 4 is a cross section taken on line 4-4 of Figure 3, illustrating the immobilising means in the locked position.
• Figure 5 is a view similar to figure 4 illustrating the immobilising means in the unlocked position.
• Figure 6 is a perspective layout of a platform of the kind depicted in figure 1 with an electrically powered deck drive means.
• Figure 7 is a detail view from one side of the portion of figure 7 included within the enclosure marked 7 in that figure.
• Figure 8 is a view similar to figure 7 showing a drive means, being a component of the platforms of figure 1.
• Figure 9 is a detail front elevation of guide and support means for a retractable deck, being components of a platform of the kind depicted in figure 1.
• Figure 10 is a perspective view of an electrically powered friction drive means, being components of a platform of the kind depicted in figure 1.
• Figure 11 is a view similar to figure 10 of an alternative drive means incorporating a rack and pinion mechanism which is electrically, mechanically or hydraulically powered.
• FIGs 13 and 14 illustrate details of bracing means, being components of the platform illustrated in Figure 12.
• Figure 16 is a perspective view of a brace element and a pair of length adjustable struts being components of a platform in accordance with the invention.
• Figure 17 is an exploded perspective view of the brace element and the pair of struts illustrated in Figure 16.
• Figure 18 is a perspective view of a another construction platform according to the invention having a fully inboard support structure and a fully retractable landing deck.
• Figure 19 is a top plan elevation of the platform of Figure 18.
• Figure 20 is a side view of the platform of Figure 18.
• Figure 21 is a perspective view of a plank located between two length adjustable struts, being components of the platform of figure 18.
• Figure 22 is a side elevation of a base plate and roller arrangement, being components of the platform of figure 18.
• Figure 23 is a section taken on line 23-23 of Figure 22, drawn to a smaller scale.
• Figure 24 is a perspective view of a portion of a base and rollers, being components of the subject matter of figure 18.
• Figure 25 is an elevation of a deck strut and a support structure strut and deck drive means, being components of the platform of figure 18.
• FIG 26 is a perspective detail view of deck drive means including an electric motor or a hydraulic motor in conjunction with a rack and pinion, being components of the platform of figure 18 drawn to a larger scale.
• Figure 27 is a view similar to figure 26 of an alternative deck drive means.
• Figure 28 is a perspective view of three fully retractable platforms of another embodiment of the invention.
• Figure 29 is a side view of two of the platforms depicted in
• Figure 31 is a front view of one of the platforms depicted in Figure 28, but with struts omitted.
• Figure 32 is a cross-sectional detail view of a support structure beam and part of a retractable deck carried thereby, according to another embodiment of the invention.
• Figure 33 is a perspective view of a platform according to the invention in combination with a chute assembly.
• Figure 34 is a perspective view of three platforms according to figure 33 in combination with the chute assembly of that figure.
• each platform 100 comprises a semi-permanently erected stationary support structure comprising side rails or beams 102 and a movable landing deck 103 which is supported by and travels upon the beams 102 on rollers or bearings as described in more detail hereinafter.
• the deck 103 may be shifted between an inboard position (as shown in the two uppermost platforms of the figure) and an outboard position (as shown in the bottom platform of the figure), so that a load can be lifted straight through to the overhead rail 101.
• Each platform 100 further comprises safety barrier means comprising side walls 104 extending along at least the outboard portions of the beams 102 and folding or swinging doors 105 mounted on the deck 103.
• An end gantry 105 may be required to support the far end of the rail 101.
• FIGS 3 to 17 inclusive illustrate in greater detail the embodiment of the invention appearing in figure 1.
• the deck 113 may comprise substantial
• FIG. 10 illustrates the drive means of the embodiment now being described.
• Those means comprise the electric 108 or other motor driving a driving wheel 118 through a right angled gearbox 119 mounted on a beam 102.
• the wheel 118 has a high friction surface to minimise slip between it and the floor panel 116.
• This friction drive mechanism further includes an adjusting or tensioning screw 120 which is used to increase or decrease the amount of pressure exerted by the wheel 118 on the deck floor 116.
• the friction roller 118 is held on a pivoting bracket 121 which is raised or lowered by adjustment of the tension screw 120.
• Figure 11 illustrates an alternative drive means for shifting the deck 103.
• the drive motor and gear box mounted on the beam 102 turns a pinion of a rack and pinion pair 122.
• the pinion is mounted for rotation about a fixed vertical axis and engages a longitudinally extending rack on the rail 114 through a slot in the web of the beam 102.
• Rotation of the pinion gear causes the deck 103 to advance and retract.
• Guide rollers 123 and 124 prevent the rack and pinion from becoming disengaged, and wheel 125 supports the weight of the deck and provides for its free movement.
• FIGS 3, 4 and 5 illustrate in greater detail a preferred embodiment of a locking mechanism, being an immobilising means of the embodiment of the invention now being described.
• the illustrated mechanism comprises a latch bolt 126, a bolt guide 127 and a clip 128 to hold the bolt 126 in a retracted inoperative position.
• Figure 4 illustrates the locking mechanism in an operative position with bolt 126 extending through openings in the top and bottom flanges of support beam 102, and through a hole in the edge margin of the movable deck 103 when the hole and openings are brought into register thereby preventing relative sliding movement between the deck 103 and the beam 102.
• Figure 5 illustrates the locking mechanism in an inoperative position with bolt 126 (in ghost outline) in a retracted position in engagement with the clip 157, thereby permitting relative sliding movement between the deck 128 and the beam 102.
• a similar locking mechanism may be used as immobilising means in fully retractable platform embodiments in which the retractable beams of a sliding deck are slidably supported within respective stationary guides of an inboard support structure, to prevent relative movement therebetween.
• FIGS 12, 13 and 14 illustrate details of the outer edge of the embodiment now being described, with the deck 103 in its outboard position of use.
• bracing means for the platform comprising a pair of elongate stay elements 129, each having an end hinged by means of hinge joint 130 or otherwise pivotally mounted to a top edge of the exposed end of the retractable deck 103.
• the other end of each of the stay elements 129 is releasably fastened or secured to a respective safety wall 104.
• the flange 404 may be releasably fastened to the deck 400 by fasteners, such as nuts and bolts 406, or may otherwise be fixed thereto.
• Said retaining members 403 are preferably welded to the beam 401.
• Each retaining member 403 has a recess 403 in its lower edge margin forming a cavity between itself and the web of the beam 401.
• the flange 406 extends into those cavities thereby preventing separation of the deck 400 from the beam 401 in a non-axial direction.
• the member 403 also supports a roller bearing 405 making rolling contact with the flange 404.
• the web of the beam 401 is provided with a number of pairs of roller bearings 407 spaced apart along its length making rolling contact with the flange 404.
• FIG 33 illustrates a platform 500 in combination with a rubbish disposal chute 501.
• the safety barrier 502 of the platform 500 is provided with a set of gates 503 adapted to open onto an aperture 504 in the side wall of the chute 501 facing the platform 500.
• the chute 501 is releasably attached to said safety barrier 502 and as illustrated in Figure 34 is adapted to be included in a chute assembly comprising a plurality of such chutes in a vertical stack, wherein each communicates with a neighbour or neighbours to form a continuous duct through which material may be delivered to a bin 506.
• the chutes 501 may be formed of plastics or metal material.
• Figure 34 illustrates three platforms 500 in combination with a chute 501.
• the illustrated assembly of chutes 501 is releasably attached to each of the three platforms 500.
• the gates 503 of the respective safety barriers 502 Prior to retraction of the deck of one or more of platforms 500 the gates 503 of the respective safety barriers 502 may be closed and the deck of the platform 500 may then be retracted safely without interfering with the operation of the chute assembly or any other platform 500. Further, in the case of partial retraction, the gates 503 of any one safety barrier 502 may be relocated therealong to another position to coincide with the chute aperture 504. Further still, the assembly of chutes 501 does not interfere with the use of any one or more of the platforms 500.
• the bottom platform 500 may be used as a loading platform, while the decks of the two upper platforms 500 are partially retracted and are used in combination with the chute assembly for rubbish removal.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Conveying And Assembling Of Building Elements In Situ (AREA)
• Pallets (AREA)
• Tents Or Canopies (AREA)
• Revetment (AREA)
• Road Paving Machines (AREA)
• Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Applications Claiming Priority (4)

Publications (3)

Family

ID=3777164

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (24)

Citations (4)

Family Cites Families (3)

• 1994
  • 1994-08-30 SG SG1996005441A patent/SG47929A1/en unknown
  • 1994-08-30 AT AT94926058T patent/ATE293195T1/de not_active IP Right Cessation
  • 1994-08-30 WO PCT/AU1994/000509 patent/WO1995006794A1/en active IP Right Grant
  • 1994-08-30 CN CN94193704A patent/CN1069728C/zh not_active Expired - Fee Related
  • 1994-08-30 CA CA002170127A patent/CA2170127A1/en not_active Abandoned
  • 1994-08-30 DE DE69434331T patent/DE69434331C5/de not_active Expired - Lifetime
  • 1994-08-30 EP EP94926058A patent/EP0715672B1/de not_active Expired - Lifetime

Patent Citations (4)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events