AU609880B2

AU609880B2 - Scaffold platform section

Info

Publication number: AU609880B2
Application number: AU22776/88A
Authority: AU
Inventors: Ruth Langer; Ulrich Layher
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-09-23
Filing date: 1988-09-23
Publication date: 1991-05-09
Anticipated expiration: 2008-09-23
Also published as: FI87679C; ATE100171T1; ES2050133T3; JP2721196B2; EP0308882A3; EP0308882A2; FI87679B; JPH01163361A; FI884349A0; NO884213L; NO173460B; DE3887051D1; EP0308882B1; FI884349A; NO173460C; NO884213D0; AU2277688A

Abstract

A platform for scaffolds is constructed in the form of a corner platform (117) and has an optionally multi-part platform plate (27), on which at least one supporting leg (29) carrying suspension claws (39) or the like is angled. A supporting leg possesses a lower liftoff-prevention leg (30) which reaches underneath the U-shaped supporting bar (14) in the suspended position. The platform bridges the most varied angular regions between other scaffold platforms and can have a pivoting part (37) for balance. The actual corner platform (117) can be equipped with an edge leg (35). The pivoting part (37) can have an edge leg (38). Two part-elements can be connected to one another in such a way as to be pivotable and flexurally rigid. <IMAGE>

Description

.i rDMENTS

AUSTRALIA

PATENTS ACT 1952 6 9880 Form COMPLETE SPECIFICATION

(ORIGINAL)

FOR OFFICE USE Short Title: Int. Cl: t rdo r nd' I Application Number: c and i C Lodged: prinsi Complete Specification-Lodged: Accepted: Lapsed: Published: Priority: Related Art: t TO BE COMPLETED BY APPLICANT t t t Name of Applicant: 1) Ruth LANGER k ddress of Applicant: WEINBERG 13 D-7129 GUEGLINGEN

(BADEN-WUERTTEMBERG)

FEDERAL REPUBLIC OF GERMANY 2) Ulrich LAYHER Address of Applicant: LAILEN 16 D-7129 GUEGLINGEN-EISENBACH FEDERAL REPUBLIC OF GERMANY 'Actual Inventor: s. p e'ib s'r Service: GRIFFITH HACK CO., 601 St. Kilda Road, Melbourne, Victoria 3004, Australia.

q',,qomplete Specification for the invention entitled: SCAFFOLD PLATFORM SECTION The following statement is a full description of this invention including the best method of performing it known to me:- 1 l 3

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0 C CCC 00 0 00 0 00 00 0 o 05 0 00 t t t SCAFFOLD PLATFORM SECTION The invention relates to a scaffold platform section for bridging small walking and working surfaces that do not have parallel boundaries and pertain to scaffolds which are composed of several panels, the axes of which are inclined with respect to each other in order to set up scaffolding for angled and/or rounded,.

buildings, comprising a corner platform section supported on supporting span members or the like and/or on adjoining rectangular scaffold platforms.

1 4- 3 It is desirable for scaffolds to be erected, extending around rectangular or skew corners, on building and container walls that are rounded or extend in the manner of polygonal routes, on the outside or also in the interior thereof, in order to work on the walls, wall surfaces, installations, apparatuses, or the like.

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O CC a 0 CO 0 0 0 C The present invention attempts to meet one or more of the above requirements.

According to the present invention there is provided a scaffold platform section for bridging walking and working surfaces that do not have parallel boundaries and in scaffolds which are composed of several scaffold panels, the axes of which are inclined with respect to each other in order to set up scaffolding for angled and/or rounded buildings, with a corner platform section supported on supporting span members and/or adjoining rectangular scaffold platforms, wherein the corner platform section comprises a floor plate unilaterially provided with a drop-in edge with drop-in means, a supporting edge which is supported by resting on the adjoining scaffold platforms and extends in correspondence with a maximally to be covered corner angle, and wherein an outer boundary of the corner platform section has a linear, bent, or rounded shape corresponding, in use, to positions of vertical supports of the adjoining scaffold platforms.

The present invention further provides a scaffold platform section for bridging small walking and working surfaces that do not have parallel boundaries and in scaffolds which are composed of several scaffold panels, the axes of which are inclined with respect to each other in offer to set up scaffolding for angled and/or rounded buildings, with a corner platform section supported on supporting span members and/or adjoining rectangular scaffold platforms, wherein the corner platform section

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16 4. A scaffold platform section according to any one of the preceding claims, wherein a swivel member is -4comprises two floor plate components, each equipped with a drop-in edge with drop-in means, the floor plate components coming into partially superimposed relationship and being connected so that they can be mutually swiveled about a central point lying in a suitable position with regard to the position of the adjoining scaffold platforms and so that they are flexurally rigid.

Preferred embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows an oblique view of a scaffold corner with a corner platform section according to an example of a 0 e preferred embodiment; ~Figure 2 shows a top view of a simple corner etc platform section intended for a limited angular range; Figure 3 shows a top view of a further embodiment oof a corner platfora section permitting the bridging of c0 6 angular ranges of up to 900, at a 90' angle; 0 0 eFigure 4 shows an illustration of the same corner platform section corresponding to Figure 3, but irl a swung-out position for a 450 angle; Figure 5 shows a horizontal partial section along 0 line 5-5 in Figure 3, the scaffold elements having been cc omitted; Figure 6 shows an illustration corresponding to 0 9 S Figure 3, using the corner platform section depicted in Figures 3-5, but for a frame scaffold; Figure 7 is an illustration corresponding to C Cg r Figures 4 and 6 with the corner platform section at a 450 corner of a frame scaffold; Figure 8 is a vertical section along bent line 8-8 in Figure 7, depicting the bridging of a cross strut;

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Figure 9 shows a schematic top view of a further embodiment with a differently arranged folding member; Figure 10 shows a top view of a further embodiment for a corner platform section with adjoining elements at the smallest possible angle; Figure 11 shows an illustration corresponding to Figure 10 at the largest possible angle; Figure 12 is a partial vertical section along the bent line 12-12 in Figure 11 on a larger, approximately natural scale; Figure 13 is a partial vertical section along line 13-13 in Figure 11 through the guiding border legs; Figure 14 is a partial horizontal section along line 14-14 in Figure 13; Figure 15 is a top view of another embodiment so of a corner platform section as essentially shown in 0000 Figure 3, but having different drop-in means; Figure 16 is a horizontal partial section along 20 the bent line 16-16 in Figure 15, depicting the insert pin drop-in system for corner platform sections; Figure 17 is a horizontal partial section which roughly corresponds to the left part of Figure 16 but shows suspension means for suspension from a supporting 25 span member, which are in the shape of a double prism or a to a double bead.

i The scaffold 10 according to Figure 1 comprises posts 11 joined by transverse elements and customary 4t corner joints, as well as railing bars 16. Rectangular 30 scaffold platforms 12 are hung with their drop-in claws 13 into upwardly open U supporting span members 14

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ao extending respectively between two posts 11 in a conventional way. The posts 11 stand on the ground with feet -18ii, attachment of retaining pins which are free for Povement in 6 As can be seen, two scaffold panels A and B are set up at a mutual angle of 900 and are provided in this case, for example, with only one scaffold platform deck.

The corner zone C must be bridged and comprises diagonally extending railing bars 16 as well as a corner platform section 17 exhibiting along one rim a drop-in edge 18 with drop-in claws 13, by means of which it is hung in this marginal zone into the upwardly open U supporting cross pieces 14.

The corner platform section 17/117 is otherwise of differing structures in accordance with the following figures, depending on the respective purpose.

Figure 2 shows a simple corner platform section 17 suited for bridging corner zones of up to 45°. It is made of a uniform, slip-proof sheet-metal part and is cut to size in such a way that it exhibits along its drop-in o edge 18 the conventional width dimension GB of a customary scaffold platform panel width. In its first e zone, the corner platform section is defined along the 20 side by lateral sections 19.1 and 19.2 adjoining at a right angle. The section 19.2 has such a length that, in the frame scaffold illustrated herein, exhibiting posts 11.1 and 11.2 standing side-by-side, it still extends to the scaffold platform 12.2. At that location, the section has a supporting edge 20 cut at an angle of 450.

4 6 This supporting edge as can be seen from Figure 8 S.u is provided with an obliquely downwardly beveled -marginale~je- Secro 0 -ei021 resulting in a free spacing H at the bottom, so that the corner platform section 117 lies above the lower transverse connecting tube 22 of the posts 11 of a frame once the section has been hung in place.

The fourth boundary edge 23 extends from an outer corner point 24 of the supporting edge 20 to a corner point 25 of the lateral section 19.1. In this arrangement, the position is chosen so that the post 11.3 it is not impeded by the boundary edge 23 even in different I A 1 7 swiveling positions, when the angles become smaller. Thus, relatively large angles, but also minimally small angles can be readily bridged by means of a simple sheet-metal part that has been suitable cut to size and is somewhat beveled. The outer rims formed by the lateral section 19.1 and by the boundary edge 23 can be provided with an upwardly projecting, beveled side plate taking over the function of an edge board to prevent lateral slippage.

The embodiment dealt with in Figures 3-7 shows a corner platform section 117 of like structure. In this connection, Figure 5 shows the drop-in zone 26. The platform plate 27 having a thickness, for example, of is provided at its rim 28 forming the drop-in edge 18 with a supporting member 29 bent downwardly at a right angle; in front of this supporting member at the end face, CA the drop-in claws 13 are welded in place; these rest on the upper, rounded edges 14.1 of the U supporting span members C 9 14.

O The supporting member 29 has such a length that is Sexhibits at the bottom an outwardly projecting, being again bent into the horizontal, outwardly projecting lift-preventing wing 30, the position and length of this latter wing being dimensioned so that it lies, when dropped in obliquely from the top, in its final horizontal position by several millimeters below the bottom edge of the upwardly open U-shaped supporting crosspiece 14, as illustrated in Figure 5, so that the corner platform a section 117 cannot tip. Like arrangements are provided on 1, ,o all corner platform sections to permit dropping in and to 6- C prevent lifting off and tipping.

The corner platform section 117 according to Figures 3 and 4 is designed, in contrast to that of Figure 2, with a somewhat different contour line because it is suitable for bridging larger angles of up to 900, but also permits bridging of small angular ranges. In this arrangement, the lateral section 19.2 is positioned at an angle a of 1350 so that it suitably extends, in case of all J4 A.

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r;6/z 8 scaffolds under consideration, just barely past the posts, even if two posts are standing side-by-side. The supporting edge 20 with its edge section 21 here extends with respect to the drcp-in edge 18 at an angle of 90 and is arranged to be positioned farther outwardly so that this edge 20 rests on the scaffold platform 12.2 lying around the corner.

Furthermore, the boundary edge 23 is here extended in a straight line at an angle of 450 precisely so that the outermost corner point 125 is located in such a way that the supports 11 involved, together with their attachments S lying in the corresponding plane, can just barely be swung i past. The boundary edge is provided with an upwardly bent border side plate 35 of the type of an edge board. This rc zone of the boundary edge 23, provided with border side plate 35, is followed, without a border side plate by a rC C linear section 36 swung further inwardly and associated S with a swivel member 37. The swivel member 37 permits as can be seen from Figures 3 and 4 for varying angular positions an optimum bridging of the remainder of the marginal zone because, for example, in case of angular positions of merely 450 according to Figure 4 the linear Cc c section 36 lies centrally on the surface. The swivel member 37 has an upwardly projecting border side plate 38 i and is articulated, lying therebelow, with the aid of a continuously extending joint 39, to the floor plate 27, as C qC can be seen from Figures L The embodiment of Figures 6 and 7 shows the same parts, except that in this case frame scaffolds are provided having respectively two posts 11.1 and 11.2 as in Figure 2. However, the structure, position, and function are identical, and the two usage phases at 45 and at 900 are illustrated with the respective swivel position of the swivel member 37, where it can be seen even more clearly how the border side plate 38 adjoins with its end 38.1 the actual edge board 40 of the primary scaffold.

Figure 9 shows a version corresponding to Figures 3 $x Pa:AE 9

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0 r: 4 444c 00 c e 4 4 (4 C 4 44 0r 4 4 o 44a and 4 wherein the swivel member 41 has a greater length and lies with its point of articulation 42 directly at the outer corner of the drop-in edge 18. A sliding joint 43 with a slotted hole having the shape of a divided ctrcle secures the connection. For certain constructions and angular ranges, such a solution may be expedient.

Figures 10-14 show a further embodiment for a scaffold platform section fashioned as a corner platform section 47. This corner platform section 47 differs from those dealt with hereinabove in that it is composed of two circular segments of sheet metal. These segments are superimposed in the overlapping zone 49. Each of these components 50.1 and 50.2 has an externally located drop-in edge 48.1 and 48.2, respectively. These are likewise equipped with supporting members 29 and 29.2 in the embodiment. Both supporting members have drop-in claws 13 fitting with the scaffold system and mounted in a suitable arrangement. The supporting member 29 of the larger component 50.1 has a lift-preventing wing 30 and is hung in place in the same way as described hereinabove. The supporting member 29.2 is designed without lift-preventing wings so that the corner platform section 47 can be swung inwards in the manner described above and can rest on both sides on the drop-in claws 13 on the edges 14.1 of U-shaped supporting cross-pieces 14.

The two components 50.1 and 50.2 are each terminated by an outer boundary 51.1 and 51.2 extending in the shape of a divided circle. The center of these divided circles is the center 52 of the post 11.4 located in the corner, as illustrated in Figures 10 and 11, 4 44 t t i0 because in this scaffolding the swiveling action when i setting up at nonlinear facades or the like takes place in each case about the center of a post 11.4 between two scaffold panels, and thereby the corner arrangement is built up so that the corner platform section can be fittingly hung in place. When using scaffoldings wherein two posts, or the posts of two frames, are in close juxtaposition, then a suitable center in their proximity is to be defined for fashioning the corner platform section. Concentrically to this center in this instance the center 52 a slotted hole 53 having the shape of a divided circle extends in the component 50.1, this slotted hole extending up into the proximity of the drop-in edge 48.1 and up into the proximity of the internal boundary 51.3, as shown in Figures 10 and 11. A retaining pin 54 passes through this slotted hole 53, which latter is curved in the manner of a partial circle; the rounded head 55 of the retaining pin rests, with o 4 interposition of an adequately large washer 56, above the 20 rims of the slotted hole 53 on the surface of the 0 r ct f component 50.1. A simple passage hole 58 is arranged in Ao C the sheet metal of the other component 50.2 lying 0 therebelow, the shank 57 of the retaining pin 54 extends through this hole 58, the entire arrangement being mounted on the underside with a washer 59.1 firmly braced 0, against a shoulder and with a nut 59. Accordingly, a flexurally rigid connection which, however, can be i pivoted about the center 52 through an arc is obtained AID 0 between the two components 50.1 and 50.2 in the inner end S 30 zone of the corner platform section 47.

«The external, slidable and flexurally rigid connection is formed together with the border ;1"&960 of the corner platform section 47. For this purpose, border Ssec±? or g-60.1 and 60.2, respectively are formed, projecting upwardly, at both components 50.1 and 50.2 in the external zone, of a height corresponding to the remaining i E .I -11 7scaffolding and safety; this is also shown in Figures 13 and 14. In this arrangement, the component 50.2 lying at the bottom is provided with an externally located border section 60.2. The latter is equipped at the top with overlapping sections 61.1 and 61.2 holding the sliding joint together and extending to the inside of the inwardly located border section 60.1 from above. In order to obtain a readily operable sliding joint, supporting nubs 62.1 and 62.2 are embossed which project from the surface toward the border section 60.1 so that two point-like contact sites are produced. The two overlapping sections 61.1 and 61.2 r 0e lie at a small angular spacing, as show especially in o o Figure 11, so that they both still engage securely at the S border section 60.1 even in the smallest overlapping range 00 aoc 49. If the corner platform section 47 is further swiveled oo together on account of a larger or smaller angle between

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a 0 the scaffold panels, as is possible up to the final 00 0 C position illustrated in Figure 10, then the supporting nubs 62.1 and 62.2 are entirely within the neighboring zone of the drop-in edge 48.1. In this position, the component 50.1 located on top is swung so far over the component 50.2 that its outer end 63 comes to lie above the scaffold cc platforms 12.2 of the adjoining panel, as shown in Figure 0 C 0 C C This arrangement, which seems somewhat more complicated in structure, provides readily surveyable r e C n supporting conditions, but requires a firm, flexurally C1,e, 1 rigid connection among the components which is safely slidable over a long period of time so that this connection can meet the needs in the rough realm of the building trade over many years. For this reason, the arrangement does not employ the principle of support on the neighboring scaffold platform. This arrangement displays a clear edge board boundary which in all cases i f 4 -i 12extends past the linear corner railing and always has a StAe- P+tcQ+border l1ygarrangement which is continuous over the entire length.

The embodiment of Figures 15 and 16 shows a corner platform section 67 corresponding essentially to the corner platform section 117 of Figure 6 with respect to its configuration. Therefore, identical parts bear the same reference numerals. However, in place of the drop-in claws (13) of the first embodiment, this arrangement has drop-in eyes 68. The latter are mounted at a spacing 69 to the supporting. 29.3 of the corner platform section along one egde, as is customary, for example by welding, by means of screws, or by means of rivets. They have vertical passage bores engaged by vertical retaining pins 70 which latter are fastened on the outside to the supporting crosspieces 71 at a suitable spacing, for example by welding. The supporting r ,crosspieces 71 are attached to posts 11.5 of a scaffold t support in the neighboring panel, this support being .i 20 fashioned, for example, in the shape of a frame. Also the remaining scaffold platforms are mounted to retaining c 1 S pins by means of drop-in eyes.

a' s This type of mounting is provided for the corner platform section 67 only on one drop-in edge.

Such mounting can also be provided identically at the 4 second drop-in edge in a corner platform section having H ,the configuration according to Figures 10-14. As shown in Figure 16, the scaffold floor 12.3 is retained by identical drop-in eyes. A round, horizontally extending cross connection tube 73 pertains to the supporting structure of the scaffold and usually establishes the connection of the posts in their lower region for the formation of frames. This tube serves simultaneously as a securing means against lifting off. The bottom plate 27 of the corner platform section 67 extends, exactly as V has been described in conjunction with Figure 8, over I i I ip 7 /12 -13this cross connection tube 73. The other embodiments of corner platform sections can likewise be equipped with like drop-in eyes or other connecting means for the respective scaffolding.

The connecting means or suspension means for connecting the corner platform part with the supporting span members or the like can also have other shapes and can be designed as differently shaped hooks or eyes or as beads, prisms, or other drop-in shapes. They can also be designed as double claws, double hooks, double beads, or double prisms or the like as are usually employed for scaffold systems and which correspond to the receiving area and the cooperating fastening means, which ensure that the applied forces are supported and lifting up is prevented, for example by transverse components, which after assembly are located so close to the suspension means that the latter can no longer be lifted out of the t secured position of use. For example, according to Figure 17 suspension double prisms 75 can be fastened to c 20 supporting lec29, said prisms being formed for example r• from a multiply bent sheet metal section, as shown in SFigure 17. In this figure, suspension double prisms is designed to be symmetrical to horizontal center 76 and has on each side, a depression 77.1 or 77.2, the lower of which (77.1) is designed as a suspension depression for Sresting on edge 14.1 of U-shaped supporting span member o. 14. Downwardly projecting securing part 78.1 has a roughly triangular shape. Its lower edge 82 is located an amount 83 below edge 14.1 of supporting span member 30 14. Outer limiting wall 79 is vertical and blends with an upper securing part 78.2 which is likewise roughly triangular in shape. Then, as shown in Figure 17, only a small space 80 is left with respect to transverse connecting tube 81, with said tube lying between the posts not shown and preventing, as can be seen, suspensions double prism 75 from being lifted out of the j) 14locking position because space 80 is much smaller than amount 83. The locking action also operates on the one side shown here of lift-preventing 1 30. As can be seen, corner platform parts of any of the embodiments mentioned can also be fitted with suspension means known of themselves, as in Fig. 17.

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Claims

2. A scaffold platform section according to Claim i, S wherein the drop-in means are fastened on the outside of a Sa supporting member which is bent perpendicular to the floor oo plate, and the supporting member has at its lower end a a lift-preventing wing which is bent toward the outside and l parallel to the floor plate, the lift-preventing wing, in use, lying below one of the supporting span members, on which the drop-in means rests. 0 Sc 3. A scaffold platform section according to Claim 1 or 2, characterized in that, in case of scaffolds with posts joined into the scaffold panels by means of transverse connections, the corner platform section extends above the transverse connection of a respectively attached upper frame section and exhibits at its supporting end a edge section bent downwards, preferably in a round configuration. p.' A1 I- 16
4. A scaffold platform section according to any one of the preceding claims, wherein a swivel member is articulated to the corner platform section so that the swivel member can be swung underneath the corner platform section, the widest portion of the swivel member being shaped for swiveling over a to-be-bridged corner zone. I A scaffold platform section according to any one of the preceding claims, wherein the corner platform section exhibits on its outside an upwardly projecting border side plate.
6. A scaffold platform section according to claim 4, wherein the swivel member has a border side plate.
7. A scaffold platform section according to claim 6, a wherein the outer boundary of the corner platform section extends up to a corner point of the corner platform section, the corner point being located so that, in a central swiveling position of the swivel member with respect to the corner platform section of about 450 the swivel member is adjacent to a post of a scaffold zone on 0 which the supporting edge rests, and a linear section of the corner platform section extends from the corner point in such a way that it leaves, in a 9CP swivel position, between itself and the post a small vacant space for 0 accomodating the border side plate of the swivel member. 4. 9 A scaffold platform section for bridging small walking and working surfaces that do not have parallel boundaries and in scaffolds which are composed of several scaffold panels, the axes of which are inclined with respect to each other in order to set up scaffolding fo: angled and/or rounded buildings, with a corner platfor 3 section supported on supporting span members and/or 0
44- 17 adjoining rectangular scaffold platforms, wherein the corner platform section comprises two floor plate components, each equipped with a drop-in edge with drop-in means, the floor plate components coming into partially superimposed relationship and being connected so that they can be mutually swiveled about a central point lying in a suitable position with regard to the position of the adjoining scaffold platforms and so that they are flexurally rigid. 91 A scaffold platform section according to Claim 8, Sj wherein outer boundaries of the floor plate components are et configured in the shape of a divided circle. 10. A scaffold platform section according to Claim 8, or 9, wherein the flexurally rigid connection is formed S with two mutually insertable guiding border sections and/or r l with at least one divided circle--slotted hole sliding connection. 11. A scaffold platform section according to Claim wherein one of the guiding border sections is formed with i S shaped point-contact protuberances in a sliding member. c V 12. A scaffold platform section according to any one of Claims 8-11, wherein one of the drop-in means has a lift-preventing wing. I 13. A scaffold platform section according to any one of the preceding claims, wherein the corner platform section has engaging means on at least one side thereof for the safe connection with the drop-in means which fits with the respective scaffolding. 14. A scaffold platform section according to Claim 13, wherein the drop-in edge has, at a spacing fitting with I respect to the scaffold support, drop-in eyes for the 0M\ /Q f ^U i| :y -I 18- attachment of retaining pins which are free for movement in the upward direction. A scaffold platform section according to Claim 14, wherein the drop-in eyes are attached to a downwardly angled, vertical supporting member. 16. A scaffold platform section according to Claim 13, wherein the engaging means are designed as beads or prisms or as double claws, double hooks, double beads, or double prisms. 17. A scaffold platform section according to Claims 13, wherein a space between an upper part of the drop-in means ctf and a transverse connecting means running between posts, is c t smaller than the height of the overlap of the drop-in C means. (U C [C CE 18. A scaffold platform section substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings. C DATED THIS 12TH DAY OF FEBRUARY, 1991. RUTH LANGER AND ULRICH LAYHER By Their Patent Attorneys: GRIFFITH HACk CO. Fellows Institute of Patent Attorneys of Australia. (c