DK176973B1 - Scaffolding board with covered hook - Google Patents

Abstract

Scaffolding board (1) having a substantially flat top (2) with a surface for the accommodation of persons and comprising hooks (3) at each end of the scaffolding board (1), the hooks (3) being provided with recesses downwards (4) for retaining the overall style loading board (1) on a transverse beam (5), the at least one end (6) of the scaffolding piano being provided with a cover surface (7) extending over the length of the hooks, thereby covering the transverse beam ( 5) when the scaffolding board (1) is arranged on the beam (5) and that the hooks (3) and cover surface (7) are established as a U-shaped element (8).

Description

in DK 176973 B1

Scaffolding board with covered nook The field of the invention

BACKGROUND OF THE INVENTION The present invention relates to a scaffolding board having a substantially planar top surface with a surface for occupants and comprising hooks at each end of the scaffolding board, the hooks being provided with downwardly directed recesses for retaining the overall scaffolding board on a transverse beam. wherein the at least one end of the scaffolding board is provided with a covering surface extending over the length of the hooks, thereby covering the transverse beam when the scaffoldingboard is mounted on the beam.

Background of the Invention

Metal scaffolding boards are known, for example steel or aluminum, which typically have a non-slip surface and hook fittings for attaching the scaffolding board to a transverse beam. The design of the hook fittings varies depending on the application. These scaffolding planks are characterized in that when the planks are laid down / mounted in extension 15, a gap is created between the planks above the transverse beam. This hole may act as a stumbling edge when crossing it, or as a barrier when using e.g. wheelbarrow.

It has previously been attempted to cover this hole with loose brackets or with a covering 20 of the hooks by extending the scaffolding board beyond the hooks. Such an example is known from WO 94/06982. The disadvantage of this solution is that the hooks that are attached to the side of the scaffold board are relatively thin. Therefore, they are very prone to shocks and blows. They become slightly crooked as a result of handling the scaffolding board. This impairs the function and their ability to hold the scaffold board to the cross beam. The shelf life of the hooks 25 is low and unless they can be removed and replaced, the scaffolding board will have a very limited service life.

The object of the invention

It is an object of the invention to provide a scaffold board with covered hooks having a good durability and a good resistance to deformations due to impact and impact.

DK 176973 B1 2

Description of the Invention

This is achieved according to the present invention with a scaffolding board of the type mentioned initially, characterized in that the hooks and cover surface are established as a 5 U-shaped element, that the recesses are established in the leg of the U-shaped element, -shaped member of said scaffolding board one end is made of a first size and the hooks of the other end of the scaffolding board are formed with a second size and spacing so that they can be enclosed by a U-shaped member on an adjacent one's scaffolding board when these scaffolding boards reach is located on the same transverse beam.

10

Hereby a bridge is formed between two adjacent scaffold planks. This provides a significant increase in safety while working on the scaffolding boards. The U-shaped element which integrates both hooks and cover surfaces helps to give the hooks a better resistance to deformations from impact and impact, because the design gives an increase in the strength of what is known. The shelf life of the scaffolding board is thereby extended.

This also provides that the scaffolding board can be used in a scaffold which consists of several adjacent scaffolding boards. The U-shaped element at one end of the scaffolding board will overlap the hooks of an adjacent scaffolding board. The scaffolding board according to the invention will thus give the advantage that the scaffold floor throughout the length of the scaffold will have a flat surface. This is a significant improvement in the safety and comfort of working on a scaffold.

25 Furthermore, the scaffold planks may be similar. This gives a manufacturing technical advantage.

The hooks on the adjacent scaffolding board can advantageously be designed so that the adjacent scaffolding board can be slid under the U-shaped element without having to lift the end of the U-shaped element.

In an alternative embodiment, the hooks and recesses are designed to at least enclose the widest point on the transverse beam. This provides good security during the construction of the scaffold, as the scaffold planks do not slide out easily with the transverse beam.

In an alternative embodiment, the end of the U-shaped member is provided with a bend, a corrugation or other strength-increasing molding. This helps to give the hooks further resistance to deformations from impact and shock, thus extending the durability.

In an alternative embodiment, both ends of the scaffold board may be provided with a U-shaped element so that both ends are provided with a cover surface. This allows the scaffolding board to be used with known scaffolding boards. When a scaffold is constructed, every other scaffold plank will be a scaffold plank according to the invention. The remaining scaffold planks will be of the known type with no deck surface.

According to a further embodiment, the scaffolding board according to the invention is characterized in that the U-shaped element is a separate bracket.

20 There are several advantages to this. Manufacturing technically, it can be advantageous to produce the scaffold plank and the U-shaped element separately, because the scaffold plank can be produced by a standard profile and the U-shaped element, which can be more complex, can be formed separately. This provides the opportunity to include additional reinforcements or other special designs.

25

The profile of the scaffolding board can, for example, be produced by an extrusion or by making a number of folds on a flat plate.

According to a further embodiment, the scaffolding board according to the invention is characterized in that the bracket is optionally attached to the scaffolding board with a screw connection, a rivet connection, a welding, a molding connection or a combination thereof.

DK 176973 B1 4

The attachment of the bracket to the scaffold board depends on the manufacturing method and any desire to be able to replace the bracket. If you want to be able to replace the bracket, the connection between the scaffold board and the bracket must be non-permanent.

An advantageous embodiment of attaching the bracket to the scaffolding board is described in Danish patent PR 176257.

According to a further embodiment, the scaffolding board according to the invention is characterized in that the separate bracket is welded to the end of the scaffolding board by welding each hook and cover surface to an end surface of the scaffoldingboard.

10

In this way, the attachment of the bracket to the scaffolding board is particularly well suited for robot welding. The welding will be performed on the inside of the U-shaped element. The weld will typically consist of two welds which will be located near the two corners.

Each weld consists of two mutually perpendicular pieces. One piece attaches the one hook portion of the U-shaped bracket to an end plate of the scaffold board and the other piece attaches the cover surface portion of the U-shaped bracket to an end surface of the styli board. Each piece of the weld will in itself have a strength so that they can withstand the stresses of the fitting during use. Therefore, any tolerances in manufacturing become less critical as there is a good likelihood that at least one piece of 20 each weld has a good adhesion.

According to a further embodiment, the scaffolding board according to the invention is characterized in that the U-shaped element is an integral part of the scaffoldingboard.

This is a particularly simple embodiment. The scaffolding board is made of a U-profile, which has recesses at one or both ends. If the scaffolding board is made with recesses at one end, an alternative type of hooks must be established at the other end of the scaffolding board.

According to a further embodiment, the scaffolding board according to the invention is characterized in that the hooks and the cover surface at the other end of the scaffoldboard are designed as a U-shaped element.

30

P

In this embodiment, all the strength and manufacturing advantages are obtained by using a U-shaped element as previously described. At the same time, it becomes possible to use scaffold planks in a scaffold consisting of several adjacent scaffold planks as described above.

According to a further embodiment, the scaffolding board according to the invention is characterized in that the top face of the scaffolding board is provided with a pattern of openings.

10 In this way, water that accumulates on the surface of the scaffolding platform can be led away and drained.

According to a further embodiment, the scaffold board according to the invention is characterized in that the cover surface is provided with a pattern of openings.

15

In this way, water that accumulates on the surface of the cover surface can be led away and drained.

According to a further embodiment, the scaffold board according to the invention is characterized 20 in that the edges of the openings are bent upwards or downwards.

This results in establishing a non-slip surface and further increasing the drainage effect at the openings. This results in a significant improvement in safety compared to known scaffolding platforms.

25

The scaffolding board or U-shaped element is typically made of aluminum or steel.

During the erection and handling of the scaffold planks, it is advantageous that the weight is as low T 30 as possible. Therefore, the scaffolding board can be made of aluminum. However, the strength requirements may make it necessary to manufacture the scaffolding board or the U-shaped steel bracket if it is not possible to make them in aluminum with sufficient strength.

DK 176973 B1 6

According to a further embodiment, the scaffolding board according to the invention is characterized in that the openings are aligned when one U-shaped element of the scaffolding board is surrounded by another U-shaped element on an adjacent board.

5 The underside of the tire surface of the outer U-shaped member will rest substantially on the upper surface of the tire surface of the inner U-shaped member.

Both cover surfaces will be provided with a pattern of openings, the edges being bent up or down respectively. The openings on the two cover surfaces will cooperate so that an opening with bent edges on the upper cover surface will lie above an opening with bent edges on the lower cover surface. The same will be the case with the openings with curved edges. The edges of the openings of the two cover surfaces extend partially through each other.

Hereby it is obtained that the two cover surfaces are secured against displacement in all directions in a plane parallel to the upper side of the scaffold planks. The scaffold planks will be even more stable and firm on the scaffold.

In addition, the scaffolding board can be provided with a locking mechanism which ensures that the scaffolding board is retained on the transverse beam. This locking mechanism is important so that you cannot unintentionally remove a scaffold board or push the scaffold so that the scaffolding boards fall off.

DETAILED DESCRIPTION 25 The invention will then be explained in more detail with reference to the accompanying drawing, in which: FIG. 1 is an isometric view of one embodiment of the invention; FIG. 2 is an isometric view of another embodiment of the invention; FIG. 3 is a perspective view of the top of a third embodiment of the invention; FIG. 4 shows a perspective view from the bottom of a third embodiment of the invention, FIG. 5 is a side view of a third embodiment of the invention; FIG. 6 is a perspective view of an embodiment in which the hooks and cover plate are a bracket; 7 is a perspective view of two scaffold planks; FIG. 8 is a perspective view from the bottom of a fourth embodiment of the invention; and FIG. 9 shows a sectional view through a portion of the U-shaped elements on adjacent scaffold planks in one embodiment.

In the description of the figures, identical or similar elements will be denoted by the same reference numerals in the various figures. Thus, no explanation of all details will be given in connection with each figure / embodiment.

DETAILED DESCRIPTION OF THE INVENTION FIG. 1 shows an embodiment of the invention in which the scaffolding board 1 has an upper side 2 and four hooks 3 which are provided with downwardly directed recesses 4. One end 6 of the scaffolding board is provided with a cover surface 7 extending over the length of the hooks. The cover surface 7 and the hooks 3 at this end 6 are formed by a U-shaped element 8, as an integral part of the scaffold board 1.

20

FIG. 2 shows another embodiment of the invention, wherein the scaffold board 1 has an upper side 2 and four hooks 3 (only three hooks are visible in the figure). The scaffold board 1 has a U-shaped element at each end. The U-shaped element 8 at one end 6 of the scaffolding board 1 has a first size 11. The U-shaped element 8 'at the other end 25 12 of the scaffolding board 1 has a second size 13.

FIG. 3-4 show a third embodiment of the invention in which the scaffolding board 1 has an upper side 2 which is provided with a pattern of openings 14, the edges 15 being bent upwards and downwards respectively. The scaffold board 1 has a U-shaped element at each end.

The U-shaped element 8 at one end 6 of the scaffolding board 1 has a first size 11. The U-shaped element 8 'at the other end 12 of the scaffolding board 1 has a second size 13. Both the U-shaped elements 8, 8 'is formed as separate brackets 9. Beats 9 are affixed to scaffold board 1 with a combination of screw connection 16, welding 18 and molding 17. U-shaped members 8,8' each have two hooks 3 with downwardly directed recesses 4, and a tire surface 7. The tire surfaces 7 are also provided with a pattern of openings 14, the edges 15 being bent up and down respectively. The scaffolding board 1 is located on a transverse beam 5, shown here only at one end 6.

Fig. 5 shows a side view of the scaffolding board 1 where the elevation of the tire surfaces 7 on the two U-shaped elements 8,8 'can be seen. At one end 10 6 of the scaffolding board, the U-shaped element 8 is of a first size 11, the covering surface 7 being substantially planar with the upper side 2 of the scaffolding board 1.1 the other end 12 of the scaffolding board is the U-shaped element 8 'of a second size 13, wherein the cover surface 7 lies below the upper surface 2 of the scaffolding board 1. The transverse beam 5 is shown only at one end 6, but the position will be similar at the other end 12. The scaffolding board 1 will preferably be horizontal.

FIG. 6 shows the separate bracket 9. The bracket has two hooks 3 with downwardly directed recesses 4, a cover surface 7 and a part 19 for securing the bracket to the scaffold board 1. This part 19 consists of a plate piece which is bent so that it has an upper side 20, an end face 20 21 and two sides 22. The cover surface 7 and the hooks 3 are welded to the end face 21. The upper face 20 is provided with two tabs 23 which cooperate with openings in the scaffold board and form a mold connection. Openings 24 in the sides 22 interact with openings in the scaffolding board, two screws and nuts to create a screw connection. This provides an effective fastening of the bracket 9.

25

FIG. 7 shows two adjacent scaffold planks 1.1 'from the underside. Both scaffold planks 1,1 'have two U-shaped elements 8,8' which are made as separate fittings 9. The figure shows how a U-shaped element 8 in a first size 11 encloses a U-shaped element 8 'in a second size 13 when placed on the same transverse beam (not shown 30). The embodiment shown interacts with the pattern of openings 14 in both U-shaped members 8,8 'for restricting movement of the scaffolding boards 1,1' in a plane parallel to the upper side 2 of the scaffolding boards 1,1 '.

DK 176973 B1 9

FIG. 8 shows an embodiment of the scaffolding board 1, wherein the scaffolding board 1 is provided with a locking mechanism 25 which holds the scaffoldingboard 1 to the transverse beam 5. The locking mechanism 25 is shown in the locked position. It also has an open position (not shown) where the scaffolding board can be placed on or removed from the transverse beam 5, respectively. Here, the locking mechanism 25 is brought to an open position by turning it about an axis through the screw 26.

In addition, the locking mechanism 25 can be provided with springs which ensure engagement.

10 A particular embodiment is shown in FIG. 9. FIG. 9 is a sectional view showing how the apertures 14,14 'interact and extend partially through one another on a portion of two U-shaped elements 8,8'. As can be seen, the upper U-shaped member 8 is supported by the lower U-shaped member 8 ', the openings are sized so that an upward bend on the upper U-shaped member 8 cooperates with a bend on the lower U-shaped member 8'. shaped element 8 'about locking the scaffold planks in a plane parallel to the upper side of the scaffold plank (not shown). The same applies to the openings 14 ', with the edges 15' bent downwards.

Claims (10)

A scaffolding board (1) having a substantially planar top surface (2) with a surface for the accommodation of persons and comprising hooks (3) at each end of the scaffolding board (1), the hooks (3) being provided with downwardly directed recesses ( 4) for holding the total 5 scaffolding board (1) on a transverse beam (5), the at least one end (6) of the scaffolding board being provided with a cover surface (7) extending over the length of the hooks, thereby covering the transverse beam (5) when the scaffolding board (1) is arranged on the beam (5), characterized in that hooks (3) and cover surface (7) are established as a U-shaped element (8), that the recesses (4) are established in the leg of the U-shaped element, that the U-shaped element (8) in the said one end (6) of the scaffolding board is formed in a first size (11) and that the hooks (3) in the other end (12) of the scaffolding board are designed with a different size and spacing (13) so that they can be enclosed by a U-shaped element (8) on an adjacent one's stand dsplank (Γ) when these scaffold planks (Ι, Γ) are located on the same transverse beam (5). 15 Scaffolding board (1) according to claim 1, characterized in that the U-shaped element (8) is a separate bracket (9). Scaffolding board (1) according to claim 2, characterized in that the bracket (9) is optionally attached to the scaffolding board (1) optionally with a screw connection, a rivet connection, a welding, a molding connection or a combination thereof. Scaffolding board (1) according to claim 3, characterized in that the separate bracket (9) is welded to the end (6) of the scaffolding board (1) by welding each hook (3) and cover surface (7) to a end surface (10) of the scaffold board (1). Scaffolding board (1) according to claim 1, characterized in that the U-shaped element (8) is an integral part of the scaffolding board (1), P1 DK 176973 B1. Scaffolding board (1) according to any one of the preceding claims, characterized in that the hooks (3) and the cover surface (7) at the other end (12) of the scaffolding board are formed as a U-shaped element (8 '). Scaffolding board (1) according to any one of the preceding claims, characterized in that the top face (2) of the scaffolding board is provided with a pattern of openings (14). Scaffolding board (1) according to any one of the preceding claims, characterized in that the cover surface (7) is provided with a pattern of openings (14). 9, Scaffolding board (1) according to claim 7 or 8, characterized in that the edges (15) of the openings are bent upwards or downwards. Scaffolding board (1) according to claims 8 and 9, characterized in that the openings are aligned when the one U-shaped element (8 ') on the scaffolding board (1) is enclosed by another U-shaped element (8) on a adjacent plank (Γ).