AU2022259332A1

AU2022259332A1 - Scaffold floor

Info

Publication number: AU2022259332A1
Application number: AU2022259332A
Authority: AU
Inventors: Wolf Christian BEHRBOHM
Original assignee: Wilhelm Layher Verwaltungs GmbH
Current assignee: Wilhelm Layher Verwaltungs GmbH
Priority date: 2021-04-13
Filing date: 2022-03-11
Publication date: 2023-11-16
Also published as: WO2022218454A1; EP4323602A1; DE102021001890A1

Abstract

The invention relates to a scaffold floor (10) comprising floor profile units (12, 14.1, 14.2) oriented in its longitudinal direction, specifically a central floor profile part (12) and two lateral edge profile parts (14.1, 14.2), which: are in the form of extruded light-metal profile parts; are connected to one another by means of longitudinal seam cross-connection means (16.1, 16.2); are connected to one another in their end face region by means of end cross-connection means; each have, in the outer edge region, a continuous hollow edge profile unit (18) having an upper profile wall (25), an outer and inner side profile wall (26, 28), and a lower bottom profile wall (30); and each have, in the upper outer edge region, a continuous projection unit (32) that points upwards. The scaffold floor is characterised in that: a longitudinally continuous reinforcing profile (74) is integrally formed underneath directly in the region of the longitudinal seam cross-connection means (16.1, 16.2); and the edge profile part (14.1, 14.2) has a first outer contour (76), that is rounded in areas, in the outer lower corner region of the hollow edge profile unit (18) in the region of the second offset region (38), and has a second outer contour (78), that is rounded in areas, in the upper corner region of the hollow edge profile unit (18).

Description

DESCRIPTION

Scaffold floor

TECHNICAL FIELD

The present invention relates to a scaffold floor comprising floor profile

units oriented in its longitudinal direction, specifically a middle floor

profile part and two lateral edge profile parts, which are designed as

extruded light metal profile parts, are connected to one another by

means of longitudinal seam cross connection means, are connected to

one another in their end face region by means of end cross connection

means, each have, in the outer edge region, a continuous hollow edge

profile unit having an upper profile wall, an outer and inner side profile

wall, and a lower bottom profile wall, and each have, in the upper outer

edge region, an upwardly pointing continuous projection unit, wherein

downwardly open hook-in claws are present in each end face region of

the scaffold floor, wherein the bottom profile wall has a first offset region

from the inside to the outside in the outer region, which offset region is

offset downward by a first offset extent relative to the underside of the

bottom profile wall, and has a second offset region that adjoins the first

offset region to the outside and is offset downward by a second offset

extent, greater than the first offset extent, relative to the underside of the

bottom profile wall, wherein the offset regions are designed such that,

when scaffold floors are stacked one on top of the other, the projection

unit of a lower scaffold floor is arranged in the region below the first

offset region of the bottom profile wall of the scaffold floor stacked

thereabove, and the difference between the first and second offset

extents substantially corresponds to the length of the projection unit.

PRIOR ART

There is a wide variety of designs of scaffold floors using extruded light

metal profile parts. For instance, DE-OS 37 24 269 Al discloses a scaffold

floor that has box-like longitudinal spars and transversely oriented floor

profile parts consisting of light metal and has end connection means

formed with C-shaped transverse caps consisting of steel. The

production and assembly of such a scaffold floor is relatively complex.

EP 0 736 647 Al, FR 2 501267 Al and DE 94 13 722 U disclose a scaffold

floor having longitudinally oriented floor profile parts and vertical

reinforcement structures such as L-webs or T-webs and/or box-like

longitudinal reinforcement profiles consisting of light metal. These have

end connection means that may also be formed with light metal profiles

and are C-shaped or box-like and can be inserted into the scaffold floor

profile structure or attached to the end face. The end connection means

are predominantly connected to the floor profile parts by welding. These

scaffold floors offer only limited resistance to the very rough use and

handling conditions prevailing in scaffolding. In particular, undesirable

deformations can occur in the edge region of end connection profiles

formed with light metal material if the latter are not used properly. This

can necessitate early or premature replacement of the scaffold floor.

DE 35 39 507 Al describes a scaffold frame board that has a metal frame

within which a panel having a walking and working surface is arranged.

The metal frame consists of longitudinal spars and transverse bars. The

longitudinal spars are designed as hollow profile elements with outer

walls, a top chord wall, and a bottom wall. The bottom wall has two

spaced-apart, downwardly protruding, triangular-prism-shaped ribs.

The top chord wall has upwardly protruding, triangular-prism-shaped

stacking ribs, which are spaced apart in the transverse direction and the

clear spacing of which is slightly larger than the ribs of the bottom wall.

As a result, the ribs can engage in one another when scaffold frame

boards are stacked one on top of the other, whereby lateral slippage is

prevented.

EP 0 936 326 Al discloses a scaffold floor in which the floor profile units

are designed as extruded light metal profile parts that are connected in

their end face region by means of end cross connection means consisting

of steel. The connection is made via riveting. The end cross connection

means bear the hook-in claws in order to hook the scaffold floor into

cross beams correspondingly present on the scaffolding. Such a scaffold

floor allows simple and cost-effective manufacture and assembly and

meets the demands occurring during rough use in practice. In addition,

it has a high flexural and/or torsional rigidity.

EP 2 354 374 A discloses a scaffold floor of the type mentioned in the

introduction. The formation of first and second offset regions in the edge

profile units and on the underside of the bottom profile wall in

conjunction with the projection unit means that simple and secure

stacking of the scaffold floors is possible. There are relatively sharp

edges on the outside, which are uncomfortable when gripped. When the

scaffold floors are lashed down with a lashing strap in order to form a

transportable unit from multiple scaffold floors, there may be a risk of

the edge profile units being pushed in and thereby damaged. The

lashing strap itself can also be damaged thereby.

PRESENTATION OF THE INVENTION

Proceeding from the cited prior art, the present invention is based on the

object or the technical problem of specifying a scaffold floor of the type

mentioned in the introduction that has improved handling, can be

stacked and unstacked in a simple manner, and meets demands for high

rigidity and bearing load.

The scaffold floor according to the invention is provided by the features

of independent claim 1. Advantageous embodiments and developments

form the subject matter of the claims directly or indirectly dependent on

independent claim 1.

Accordingly, the scaffold floor according to the invention is

characterized in that a longitudinally continuous reinforcement profile is

integrally formed underneath directly in the region of the longitudinal

seam cross connection means, and the edge profile part has a partially

rounded first outer contour in the outer lower corner region of the

hollow edge profile unit in the region of the second offset region and has

a partially rounded second outer contour in the upper corner region of

the hollow edge profile unit.

The scaffold floor according to the invention has clearly rounded flanks

and corners at the outer upper and lower corner regions. It can thus be

gripped better, and the risk of constriction at the flanks is reduced

during lashing down by a lashing strap, since the force is distributed

over a larger area.

Thanks to the stiffening profile directly underneath the longitudinal

seam cross connection means, the total rigidity is considerably increased,

as is the rigidity directly underneath this connection point. Bending is

reduced when the scaffold floor is walked on, since the area trodden by the feet of an assembly person when walking in the middle generally lies directly on the line of the longitudinal seam cross connection means and thus directly above the reinforcement profile.

A particularly preferred embodiment, which increases the rigidity of the

structure in the corner region, is characterized in that the wall of the

edge profile parts has a reinforced wall thickness in the region of the

rounded outer contour of the bottom profile wall.

A particularly advantageous structural exemplary embodiment is

characterized in that the partially rounded first and second outer

contours have a curve radius within a range of 3 mm to 6 mm, in

particular of 4 mm.

A structural advantageous embodiment that ensures a high rigidity and

bearing load and allows a simple production process is characterized in

that the reinforcement profile is designed as a downwardly pointing T

profile.

A preferred development is characterized in that the reinforcement

profile is integrally formed on the longitudinal seam cross connection

means of the edge profile part or on the longitudinal seam cross

connection means of the middle floor profile part.

A structurally particularly simple solution is characterized in that the

longitudinal seam cross connection means are designed as form-fitting

means that can be inserted into one another.

To ensure a connection of the floor profile units to one another that is

reliable in the long term, a particularly advantageous embodiment is

characterized in that the longitudinal seam cross connection means are additionally secured to one another by a welded, riveted, screwed or adhesive connection.

Further embodiments and advantages of the invention arise from the

features also listed in the claims and from the exemplary embodiment

specified below. The features of the claims can be combined with one

another in any way, as long as they do not obviously contradict one

another.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention and advantageous embodiments and developments are

described and explained in more detail below with reference to the

example shown in the drawings. The features that can be found in the

description and drawings can be used according to the invention

individually by themselves or in any combination. In the figures,

Fig. 1 shows a schematic detail perspective diagram of the end

region of a scaffold floor, which is hooked into a cross beam

arranged between scaffolding poles, wherein the floor profile

parts are designed as extruded light metal profile parts, which

are connected to one another in their end face region by means

of end cross connection means consisting of steel, on which the

hook-in claws are arranged,

Fig. 2 shows a schematic detail perspective diagram of the scaffold

floor according to figure 1 by itself, that is, when not hooked

in,

Fig. 3 shows a schematic view of the scaffold floor according to

figure 2 from below,

Fig. 4 shows a schematic cross section through the scaffold floor

according to figures 2 and 3,

Fig. 5 shows a schematic detail cross-sectional diagram of the

scaffold floor according to figure 5 in the region of the

longitudinal seam cross connection means, and

Fig. 6 shows a schematic detail cross-sectional diagram of the

scaffold floor according to figure 5 in the region of the hollow

edge profile unit.

WAYS OF CARRYING OUT THE INVENTION

The figures show a scaffold floor 10, which has a middle floor profile

part 12, a left edge profile part 14.1, and a right edge profile part 14.2.

The middle floor profile part 12 and the two edge profile parts 14.1, 14.2

are designed as extruded light metal profiles. A cross-sectional diagram

of the scaffold floor 10 in the panel region is shown in figure 4.

The middle floor profile part 12 has a floor profile upper wall 22, on the

underside of which a hollow middle profile unit 24 is integrally formed

in the middle.

Both the left and the right edge profile parts 14.1, 14.2 have a floor profile

upper wall 20.1, 20.2, on the underside of which a hollow edge profile

unit 18 is integrally formed in the outer edge region.

The hollow edge profile unit 18 has a closed profile with an upper profile

wall 25, an outer profile side wall 26, a bottom profile wall 30, and an

inner profile side wall 28.

The edge profile parts 14.1, 14.2 are form-fittingly connected to one

another via longitudinal seam cross connection means 16.1, 16.2 running

in the longitudinal direction, which are shown in detail in figure 5.

The left edge profile part 14.1 thus has, in its right side edge, a first

longitudinally continuous form element 80, which is designed as a

continuous projection element. Opposite, the left side edge of the middle

floor profile part 12 has a second U-shaped form element 82, which has

two projection units 48, which are spaced apart in parallel and between

which the projection element of the first form element 80 is introduced in

the transverse direction. A reinforcement profile 74 is integrally formed

on the underside of the projection element of the first form element 80

and is designed as a downwardly pointing T-profile. The geometry of

the longitudinal seam cross connection means 16.1, 16.2 is designed such

that a continuous walking surface without gaps is formed at the top. The

connection of the first form element 80 to the second form element 82 is

additionally secured in the transverse direction by further connection

means (not shown in figure 5). These connection means can be designed,

for example, as a welded, riveted, screwed or adhesive connection.

Figures 1, 2 and 3 each show details of the scaffold floor 10 in an end

region. The scaffold floor 10 is correspondingly designed in the same

manner in the opposite end region.

In the end face region of the scaffold floor 10, end cross connection

means 50 are present, which are formed from steel and have a U-shaped cross section with an upper flange 54, a web 58, and a lower flange 56.

Side lugs 70 are integrally formed laterally on the web 58.

The upper flange 54 is connected at the top and the lower flange 56 is

connected at the bottom via a riveted connection 72 to the left and right

edge profile parts 14.1, 14.2 and the middle floor profile part 12 in the

region thereof. The side lugs 70 bear against the inside of the outer

profile side wall 26 of the hollow edge profile unit 18.

Three hook-in claws 52 are connected to the outside of the web 58 of the

end cross connection means 50. Via these hook-in claws 52, the scaffold

floor 10 is connected to a scaffold structure, a section of which is shown

by way of example in figure 1. The scaffold structure has two spaced

apart, vertically arranged scaffolding poles 60, which have rosettes 62

with a predefined spacing and cut-outs to which a wedge lock 64 with a

wedge 66 of a U-crossbar 68 can be detachably connected. For

connection, the wedge lock 64 is pushed onto the rosette 62, and the

wedge 66 is driven into the cut-out in the rosette 62. The U-crossbar 68 is

arranged upwardly open such that the hook-in claws 52 of the scaffold

floor 10 can be hooked into the U-crossbar 68 from above.

The cross-sectional formation of the hollow edge profile unit 18 is

described in more detail below with reference to the diagram in figure 6.

A first offset region 36 is integrally formed on the bottom profile wall 30

toward the outside via a web wall 42 and has an offset extent VI

downward. A second offset region 38 opens the first offset region 36 to

the outside via a web wall 40 and has an offset extent V2 greater than the

offset extent VI relative to the bottom profile wall 30. The web wall 40

has an outwardly inclined flank.

In the edge region of the upper profile wall 25, an upwardly pointing

projection unit 32 is integrally formed, which is V-shaped, tapering

upward, with a continuous wall thickness and has a groove 34 on the

inside. The V-shaped projection unit 32 has an outwardly inclined outer

flank 44, the inclination of which is substantially parallel to the

inclination of the web wall 40. The projection unit 32 has a length L

which corresponds substantially to the difference between the second

offset extent V2 and the first offset extent VI.

The projection unit 32 is arranged such that, when scaffold floors 10 are

stacked one on top of the other, the projection unit 32 of the lower

scaffold floor is arranged in the region of the first offset region 36 of the

scaffold floor 10 arranged thereabove.

The upper corner region of the hollow edge profile unit 18 has a

pronounced convexly outwardly rounded second outer contour 78.

Furthermore, the lower corner region of the hollow edge profile unit 18

has a pronounced convexly outwardly rounded first outer contour 76 in

the outer region of the second offset region 38. In the region of the first

outer contour 76, the wall of the hollow edge profile unit 18 has a

reinforced wall thickness.

The riveted connection 72 of the lower flange 56 of the end cross

connection means 50 and the riveted connection 72 of the upper flange

54 of the end cross connection means 50 have a certain overhang over the

upper side and lower side, respectively, of the scaffold floor 10. The

selected geometry of the first offset region 36, of the second offset region

38 and of the projection unit 32 ensures that, when the scaffold floors 10

are stacked one on top of the other, the height level of the free end region

of the hook-in claws 52 does not collide with the upper contour of the riveted connection 72 of the upper flange 54 of the lower scaffold floor.

As a result, the scaffold floors do not become undesirably caught when

they are stacked on top of one another and unstacked, that is, the

scaffold floors can be pulled on and off easily when stacked. At the same

time, the selected geometry of the offset regions 36, 38 and of the

projection unit 32 means that a high rigidity and bearing load of the

scaffold floor is provided in conjunction with the reinforcement profile

74.

The pronounced rounded first and second outer contours in the upper

and lower corner regions of the hollow edge profile unit 18 allows a high

degree of comfort when gripping the scaffold floor 10 for assembly or

transport purposes and counteracts damage to the profile of the scaffold

floors when a stacked scaffold floor bundle is wrapped with a lashing

strap with a high lashing force to secure a stacked bundle of the scaffold

floors for transport. At the same time, damage to the lashing strap is

avoided, since there are no sharp edges in the corner regions.

Claims

01. A scaffold floor (10) comprising

- floor profile units (12, 14.1, 14.2) oriented in its longitudinal

direction, specifically a middle floor profile part (12) and two

lateral edge profile parts (14.1, 14.2), which

- are designed as extruded light metal profile parts,

- are connected to one another by means of longitudinal seam cross

connection means (16.1, 16.2),

- are connected to one another in their end face region by means of

end cross connection means (50),

- each have, in the outer edge region, a continuous hollow edge

profile unit (18) having an upper profile wall (25), an outer and an

inner side profile wall (26, 28), and a lower bottom profile wall (30),

- and each have, in the upper outer edge region, an upwardly

pointing continuous projection unit (32),

- wherein downwardly open hook-in claws (52) are present in each

end face region of the scaffold floor (10), wherein

- the bottom profile wall (30) has a first offset region (36) from the

inside to the outside in the outer region, which offset region is

offset downward by a first offset extent (VI) relative to the

underside of the bottom profile wall (30), and has a second offset

region (38) that adjoins the first offset region (36) to the outside and

is offset downward by a second offset extent (V2), greater than the

first offset extent (VI), relative to the underside of the bottom

profile wall (30), wherein the offset regions (36, 38) are designed

such that, when scaffold floors (10) are stacked one on top of the

other, the projection unit (32) of a lower scaffold floor (10) is

arranged in the region below the first offset region (36) of the bottom profile wall (30) of the scaffold floor (10) stacked thereabove, and

- the difference between the first and second offset extents (36, 38)

substantially corresponds to the length (L) of the projection unit

(32),

- characterized in that

- a longitudinally continuous reinforcement profile (74) is

integrally formed underneath directly in the region of the

longitudinal seam cross connection means (16.1, 16.2),

- the edge profile part (14.1, 14.2) has a partially rounded first outer

contour (76) in the outer lower corner region of the hollow edge

profile unit (18) in the region of the second offset region (38) and

has a partially rounded second outer contour (78) in the upper

corner region of the hollow edge profile unit (18).

02. The scaffold floor as claimed in claim 1,

- characterized in that

- the wall of the edge profile parts (14.1, 14.2) has a reinforced wall

thickness in the region of the rounded outer contour (76) of the

bottom profile wall (30).

03. The scaffold floor as claimed in claim 1 or 2,

- characterized in that

- the partially rounded first and second outer contours (76, 78) have

a curve radius within a range of 3 mm to 6 mm, in particular of 4

mm.

04. The scaffold floor as claimed in one or more of the preceding

claims,

- characterized in that

- the reinforcement profile (74) is designed as a downwardly

pointing T-profile.

05. The scaffold floor as claimed in one or more of the preceding

claims,

- characterized in that

- the reinforcement profile (74) is integrally formed on the

longitudinal seam cross connection means (16.1, 16.2) of the edge

profile part (14.1, 14.2) or on the longitudinal seam cross

connection means (16.1, 16.2) of the middle floor profile part (12).

06. The scaffold floor as claimed in one or more of the preceding

claims,

- characterized in that

- the longitudinal seam cross connection means (16.1, 16.2) are

designed as form-fitting means that can be inserted into one

another.

07. The scaffold floor as claimed in claim 6,

- characterized in that

- the longitudinal seam cross connection means (16.1, 16.2) are

additionally secured to one another by a welded, riveted, screwed

or adhesive connection.

WO WO2022/218454 2022/218454 PCT/DE2022/000025 PCT/DE2022/000025 1/3 1/3

10

50 54 60

66

62

64

52

68 60 52 52 62 66 58

44 Fig. 1

REPLACEMENT SHEET (RULE 26) REPLACEMENT SHEET (RULE 26)

WO2022/218454 WO 2022/218454 PCT/DE2022/000025 PCT/DE2022/000025 2/3 2/3

10 72 54 12 14.2

14.1 32 72 32

52 50

58 56 52 Fig. 2 72 52

14.1 10 12 14.2

56

O

72 72 72 72 72 50

52 52 52 Fig. 3

REPLACEMENT REPLACEMENT SHEET SHEET (RULE (RULE 26) 26)

Fig. 6 25 20.1

36 14.2

30 18 28 28 18 16.2 20.2

74 30

25 V2

V1 42 10 Fig. 4

32 34 40 36

12 -24

44 76 38 26 78

22 Fig. 5 16.1 74 82

16.2

20.1 48 16.1, 74

14.1

18 28 30 25

36 80 32 38

76

78 26