DE6923564U - SCAFFOLDING BOARD - Google Patents

Description

Applicant

! ■ Cwikform Limited

V / aterloo Road

Birmingham, 25

in the County of Warwick

"England

Scaffolding board

The innovation "relates to scaffolding and affects in particular a new type of scaffolding board that is placed on the crossbars or beams of a scaffolding, for example can be arranged horizontally and detachably or integrally between any two of a number of pairs extend vertical scaffolding poles, in the latter case they are part of a scaffolding frame. In general Such scaffolding boards extend parallel to the longitudinal direction of the adjacent building wall and thus transversely to Longitudinal direction of the cross members.

Currently, scaffolding boards are usually made of wood. These boards have the advantage that they have a non-slip running surface due to the rough sawing surface of the wood, which is of course very important for scaffolding. However, if the boards over a long period of time

G923564

Ϊ S t. tt £ 3Sj * β

away from the elements, the strength and in particular the flexural rigidity of the boards slowly after,

Tüs is the task of the innovation, a scaffolding board from to create constant rigidity that is less susceptible to weather and other influences.

The innovation is that the scaffolding board consists of a metal strip with an inverted U-shaped cross-section, its molded, downwardly extending paddles for their reinforcement and for the purpose of creating after Support surfaces facing downwards for supporting the scaffolding board on cross members or other supports with one another opposing, mutually extending reinforcing flanges are provided, and that the web of the Metal band lengthways a row of spaced apart arranged from one another, has ribs pressed into its surface, which extend transversely to the longitudinal direction of the web extend and serve not only to stiffen the web but also for a longitudinal direction on the web serve as anti-skid protection for moving workers.

In addition, the surface of the web can be provided with a coating of non-slip material to allow sliding to improve the protection of the web in the longitudinal and transverse direction even further.

The workers mainly move on the scaffolding in the longitudinal direction of the boards, i.e. along the building wall, stiffen the transverse ribs pressed into the metal hence not only the ridge, but also "form" in the direction most needed, i.e. across to the length of the ribs and lengthways to the board, good anti-slip protection.

The ribs can be made by pressing the metal of the web downward so that the surface of the Stegs has flat, elongated impressions.

If it is "the metal that makes up the scaffolding" board preferably "consists of mild steel," consists of non-slip covering, preferably made of a simultaneously corrosion-resistant material and is on the entire metal [ surface of the scaffolding board in order to

Required surface protection against weather influences

to create and prevent the physical properties of steel for a long time. Use are impaired,

'A suitable covering that is corrosion-resistant and not

is EC 1490-X manufactured and sold by Minnesota Mining & Manufacturing Company.

An aluminum alloy, in which corrosion protection is unnecessary, can be used.

Although it is within the scope of the invention that the longitudinal direction of the ribs with the axis of the web is at an angle of

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45 °, however, they should preferably be at right angles extend to the longitudinal direction of the web and thereby give the G-erusfbrett maximum flexural strength.

In the drawings which represent a "preferred embodiment" show the game of innovation is

Fig. 1 is a plan view of part of a scaffolding board according to the innovation, with part of the web crawled away;

Fig. 2 is a longitudinal section on the line 2-2 in Pig. 1; Fig. 3 is a cross section, on an enlarged scale

the line 3-3 in Fig. 1, and Fig. 4 is a plan view of an innovation according to the invention

Scaffolding board on a reduced scale.

The length of the scaffolding board 9 shown in the drawings can be about 1.20 to 2.45 m, as desired. The board consists of a preferably consisting of Weicustahl metal strip, the U-shaped structure was prepared by rolling to a reversed pressed, having a horizontal web 10 with integrally formed, extending vertically downwards * · the flanges 11, extending horizontally from the lower edge opposite reinforcement flanges 12 according to

extend inside and stiffening in upwardly bent over End flanges 13 end.

The web 10 has a number of stiffening ribs 14 extending at right angles transversely to the longitudinal direction of the U- shaped construction in the form of flat,

elongated, downwardly directed indentations.

The inverted U-shaped construction is attached to each ^ n by a welded-in or welded-on strip made of an I-Ie tall "Existing" Snästück 15 completed.

The top of the ridge 10 is like the others Metal surfaces "for example with the one from the" already mentioned Connection of "existing corrosion and anti-slip" covering Mistake.

In a scaffolding board that was newly ribbed, it was subjected to bending stress and the flexural rigidity was compared with that of a similar scaffolding board without ribs. The experiments have shown that the flexural strength of the corrugated board to scaffold 40. i <> higher than that of a scaffold board not provided with ribs, so that the improved flexural strength, and thus the practical importance is demonstrated of the ribs.

In addition, it should be noted that the individual scaffolding boards according to the invention are equally strong, whereas the previously known wooden boards have a very broad, inconsistent strength range and wear out. aside from that the weight of the modern scaffolding board remains in use constant, whereas scaffolding boards made of wood by suction can become heavier from water and add up to $ 80 in weight made of wood such changes in the calculation of the

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total exposure to be taken into account toei all weather conditions and usage conditions irregularities and avoid stress "

Claims (1)

Protection claims 1. Scaffolding board, marked daduroh, dai3 it out. one Metal band with an inverted U-shaped cross-section, whose molded, downwardly extending paddles dl) too their reinforcement and for the purpose of creating downwardly directed support surfaces for the support of the scaffolding board (9) on cross girders or other supports with opposite, reinforcing flanges (12) extending towards one another are provided, and that the web (1O) of the metal strip in the longitudinal direction a row of spaced apart, pressed into its surface Has ribs (14) which extend transversely to the longitudinal direction of the web (1O) and not only to stiffen the Bar but also serve as anti-slip protection for a worker moving in the longitudinal direction on the bar. 2ο scaffolding board according to protection claim 1, characterized in that that the surface of the web (1O) is provided with a coating of non-slip material to protect against sliding to further improve in the longitudinal direction of the inverted U-shaped metal strip, 3ο scaffolding board according to protection claim 1 or 2, characterized in that that the ribs (14) are made by pressing the metal of the web (iO) down, so that the surface of the web has flat, elongated! impressions. »T ti» · t · I »· t · ■ I ill »t · · t> « I> 1 ■ - 8 - 4. Scaffolding board according to protection claim, 3, characterized in that the "ribs (14) .. at right angles Extend the longitudinal direction of the web (1O). 5. Equipment board according to any of the S 1 to 4, characterized in that the opposing emotions lying! "flanges (12). at their edges in upwards End flanges (13). 6. Scaffolding board made of mild steel according to any one of claims 1 to 5, characterized in that the anti-skid covering is also corrosion-resistant and covers the entire metal surface of the switchboard (9).