AU2021424267A1

AU2021424267A1 - Arrangement of scaffolding components

Info

Publication number: AU2021424267A1
Application number: AU2021424267A
Authority: AU
Inventors: Wolf Christian BEHRBOHM
Original assignee: Wilhelm Layher Verwaltungs GmbH
Current assignee: Wilhelm Layher Verwaltungs GmbH
Priority date: 2021-01-27
Filing date: 2021-11-22
Publication date: 2023-06-29
Also published as: EP4251824A1; DE112021006915A5; WO2022161561A1; EP4251824B1; DE102021101768A1

Abstract

The invention relates to an arrangement of scaffolding components for facade scaffolding (20) comprising a first scaffolding post (23.1) made of metal, a second scaffolding post made of metal and a railing device (21.1) which is releasably connected to both the first scaffolding post (23.1) and the second scaffolding post. The railing device (21.1) comprises a railing pole (22.1) which extends in the direction of its railing pole longitudinal axis (42.1). The railing pole (22.1) has a first railing pole end (41.1) and a second railing pole end, which extend away from one another in opposite directions. The first railing pole end (41.1) is designed with a rear-engaging element (83) which delimits a recess (73), lies opposite a first hook nose (67) of a mounting hook (50), and has a free rear-engaging element end (84) which extends towards a free rear-engaging hook end (70) of the hook nose (67) and which partially engages over a rosette wall-section receiving space (80) of the recess (73).

Description

ARRANGEMENT OF SCAFFOLDING COMPONENTS

The invention relates to an arrangement of scaffolding components for a facade scaffolding or of a facade scaffolding with the features of the preamble of claim 1.

Such facade scaffoldings are these days frequently constructed in such a way that the railings are mounted in advance. In this connection, one speaks of advance railings. For this purpose, a fitter who is standing on the ground or on a lower storey constructed with at least one scaffolding floor can from there firstly detachably fasten a first railing and optionally also a second railing by or each by a first railing end to a first scaffolding post already erected or mounted for construction of a next-higher storey. The fitter can subsequently detachably fasten the second railing end or the respective second railing end of the or the respective railing to a second scaffolding post which the fitter holds by one hand, preferably with support of the second scaffolding post by its lower post end on the ground or on the scaffolding floor of the lower storey. In the case of two railings, these are detachably fastened to the respective scaffolding post at a respective longitudinal spacing from one another. The fitter, still standing on the ground or on the scaffolding floor of the lower storey, can subsequently pivot the first railing or at the same time the first and second railings starting from a mounting setting in which the or the respective railing extends downwardly at an inclination to the first scaffolding post - with the help of the second scaffolding post by manually gripping the second scaffolding post by hand and by manual placing in upward direction, and plug the second scaffolding post, together with the railing or railings detachably fastened thereto, onto a third scaffolding post. In this or in a similar mode and manner the railing is or the railings are transferred to the next-higher storey in a horizontal installation setting and there form an advance mounted railing. The fitter, still standing on the ground or on the scaffolding floor of the lower storey, can subsequently secure a further scaffolding floor, which is then already safeguarded by the advance-mounted railing or by the advance mounted railings against persons falling down, at a desired height for completing the next higher storey. If only a first railing is mounted in advance, this is preferably mounted at a first height in which it forms a hip railing or back railing with respect to the further scaffolding floor arranged directly thereunder. If at the same time a second railing is also mounted in advance this is preferably mounted at a second height which is below the first height and which is selected so that the second railing forms a knee railing with respect to the further scaffolding floor.

19923022_1 (GHMatters) P121881.AU

A rigid U-shaped scaffolding assembly frame for a facade scaffolding or of a facade scaffolding has become known from EP 1 983 129 A2 and WO 2008/128500 A2 of the Applicant. In this scaffolding assembly frame, two parallel vertical supports are rigidly connected together in the region of the upper support ends thereof at fastening positions, which are provided at the same height, by way of a single transverse arm extending perpendicularly to the vertical supports. At the respective fastening position a single apertured disc provided with passage openings is fastened to each support by welding. The passage openings serve for the wedging fast of rod elements, which are provided with so called connecting heads, to the vertical supports. Longitudinal bars and transverse bars are usually used as rod elements. The transverse arm has at each of its fastening ends extending away from one another a respective connecting head with a plug-in slot by way of which the respective connecting head is plugged onto the respective apertured disc and fixedly welded thereat and to the respective vertical support. Two railing fastening devices are fastened to one another at a longitudinal spacing at one of the two vertical supports below the apertured disc, wherein a first railing fastening device of the railing fastening devices is fastened closely below the longitudinal centre of the associated vertical support and wherein a second railing fastening device of the railing fastening devices is fastened approximately in the centre between the first railing fastening device and the lower support end of this vertical support. Each railing fastening device comprises a mount and a locking lever pivotable relative to the mount about a pivot axis. The mount is fastened by welding to the associated vertical support. The mount is a U-shaped bracket. A passage opening in the form of a vertical receiving slot, which extends parallel to the longitudinal axis of the support, is formed between the bracket wall parts of the bracket and the outer wall of the support. The locking lever can be pivoted from an open setting to a locking setting. The railing devices in the form of railing rods can be installed not only from the same scaffolding position, but also if required - to create an advance railing - from a scaffolding position or floor lying thereunder. For that purpose the respective railing rod can be suspended or inserted from below, particularly at an inclination from below, into the mount formed as a bracket, preferably with the locking lever disposed in its locking setting, thus closed. For that purpose the railing rod is plugged by a part of one railing rod end of its railing rod ends into the vertical receiving slot, placed or suspended on a horizontal support surface of a support element of the mount, and subsequently pivoted upwardly into a horizontal installation setting. The railing rods used there have at each of their two railing rod ends a suspension hook by means of which these railings are detachably suspended at or fastened to the U brackets. These railing rods cannot be suspended by the suspension hooks thereof in the

19923022_1 (GHMatters) P121881.AU passage openings of the respective apertured disc. Lifting of these railings out of the U brackets can be prevented only if the associated locking levers are pivoted into the locking setting thereof.

In parallel US 2010/0089697 Al of the Applicant there is illustrated and described, on the basis of additional figures, how the construction of an advance railing can be carried out. In addition, within the scope of that there is also illustration and description of an alternative embodiment of a scaffolding assembly frame in the form of a rigid H-shaped assembly frame. The two parallel vertical supports are there rigidly connected together in the region of the longitudinal centre thereof at fastening positions, which are provided at the same height, by way of a single transverse arm extending perpendicularly to the vertical supports. In addition, here a single apertured disc provided with passage openings is also fastened by welding to each support at the respective fastening position. Two railing fastening devices are fastened at a longitudinal spacing from one another to each of the two vertical supports above the apertured disc, wherein a first railing fastening device of the railing fastening devices is fastened approximately in the longitudinal centre between the apertured disc and the upper support end of the associated vertical support and wherein the second railing fastening device of the railing fastening devices is fastened in the region of the upper support end of this vertical support. The mounts and locking levers are of the same form as already described and illustrated in the parallel protective rights. However, it is also possible to use, instead of these H-shaped scaffolding assembly frames, other H-shaped scaffolding assembly frames in which only one vertical support of the two vertical supports, which are rigidly connected together by means of an appropriate transverse arm, may be provided with at least one like railing fastening device, but preferably also with two like railing fastening devices. In order to construct an advance railing the scaffolder has to manually set up the H shaped scaffolding assembly frame, together with a railing device detachably fastened thereto, in upward direction. The railing rods disclosed therein also cannot be suspended by the suspension hooks thereof in the passage openings of the respective apertured disc. In addition, in these constructions a lifting of the railings out of the U-brackets can be prevented only if the associated locking levers are pivoted into the locking setting thereof.

The mounting of advance railings is also dealt with in WO 02/057569 Al. Scaffolding posts, to which a rosette or a plurality of rosettes is permanently fastened, are disclosed therein. These rosettes can each be an apertured disc with a plurality of passage openings. The railing rods disclosed therein have suspension hooks at each railing rod end of their two

19923022_1 (GHMatters) P121881.AU railing rod ends. These suspension hooks are formed in such a way that they can each be detachably fastened to the rosette or a rosette of the rosettes by the free hook part of the respective suspension hook being plugged in through a passage opening of the passage openings of the associated rosette. In the case of upward pivotation of a railing of these railings with the help of a scaffolding post of these scaffolding posts it is possible for vertical lifting of this railing out of the rosette of the associated other already erected or mounted scaffolding post to occur. This specification discloses the features of the preamble of claim 1.

It is an object of the invention to make available an arrangement of scaffolding components of the kind stated in the introduction in which the risk of lifting of the railing out of the associated rosette during advance mounting of the railing and the resulting risk of harm, particularly to persons, is reduced or eliminated.

This object is fulfilled by the features of claim 1. Consequently, the invention relates to an arrangement of scaffolding components for a facade scaffolding or of a facade scaffolding, comprising a, preferably single, first scaffolding post of metal, a, preferably single, second scaffolding post, which especially is the same as the first scaffolding post, of metal and a railing device which is detachably connected not only with the first scaffolding post, but also with the second scaffolding post, with the following features:

a) each scaffolding post extends rectilinearly in the direction of its scaffolding post longitudinal axis from its lower post end to its upper post end over an effective post length,

b) each scaffolding post is so arranged or erected in a use or mounting setting that its scaffolding post longitudinal axis extends vertically,

c) a rosette, preferably formed as an apertured disc, is permanently secured, preferably by welding, to each scaffolding post at a rosette spacing from the respective upper post end,

d) the rosette has a plurality of passage openings which are arranged at a mutual spacing in circumferential direction and which as considered in a direction transverse or perpendicular to the scaffolding post longitudinal axis away therefrom are

19923022_1 (GHMatters) P121881.AU outwardly bounded by rosette wall parts, preferably formed as support webs, preferably wall parts which outwardly bound the first rosette as considered in a direction transverse or perpendicular to the first scaffolding post longitudinal axis away therefrom, e) the railing device is detachably connected with the rosette of the first scaffolding post and with the rosette of the second scaffolding post, f) the railing device comprises a preferably elongate railing rod of metal, which is preferably formed by an elongate straight scaffolding tube and which extends in the direction of its railing rod longitudinal axis, g) the railing rod has a first railing rod end and a second railing rod end which extend in opposite directions away from one another, h) the railing rod is supported by way of a railing rod end support part of its first railing rod end on a rosette wall part, which bounds a passage opening of the passage openings of the rosette, of the rosette wall parts, i) the railing rod supported by way of the railing rod end support part of the first railing rod end on the rosette wall part of the rosette of the first scaffolding post is pivotable preferably by a fitter, particularly either from a lower storey formed by at least one scaffolding floor or from the ground - with the help of the second scaffolding post preferably by gripping the second scaffolding post by hand and manually setting up the second scaffolding post in upward direction - in upward direction relative to the first scaffolding post as an advance railing from a first railing rod mounting intermediate setting in which the railing rod extends at an inclination to the first scaffolding post into a horizontal installation setting in which the railing rod extends horizontally, preferably in which the railing rod extends perpendicularly to the first scaffolding post longitudinal axis of the first scaffolding post and perpendicularly to the second scaffolding post longitudinal axis of the second scaffolding post, j) the first railing rod end of the railing rod is arranged at the railing rod at the front with respect to the rosette of the first scaffolding post and the second railing rod end is arranged at the railing rod at the back with respect to the rosette of the first

19923022_1 (GHMatters) P121881.AU scaffolding post, k) the first railing rod end as considered in the first railing rod mounting intermediate setting of the railing rod and also in the horizontal installation setting of the railing rod has at the lower side a recess which is open with respect to side surfaces - which extend away from one another, preferably in opposite directions - of the first railing rod end and downwardly and which is bounded by contact support surfaces of the railing rod end support part of the first railing rod end,

I) the first railing rod end is formed by a suspension hook bounding the recess and having a front hook nose, which forwardly bounds the first railing rod end and extends away from a hook wall part - which is upper as considered in the horizontal installation setting and in the first railing rod mounting intermediate setting - in downward direction as considered in the horizontal installation setting and in the first railing rod mounting intermediate setting and which has a free rear-engaging hook end extending rearwardly with respect to the second railing rod end and partly engaging over a rosette wall part receiving space, in which the rosette wall part is at least partly received, of the recess,

m) the hook nose of the suspension hook of the first railing rod end engages at least partly in the first passage opening of the rosette,

n) the first railing rod end is supported by way of at least one contact support surface of the contact support surfaces on the rosette wall part of the rosette of the first scaffolding post,

o) in the horizontal installation setting of the first railing rod the free rear-engaging hook end of the hook nose of the suspension hook engages behind the first rosette wall part of the first rosette,

q) the first railing rod end of the railing rod is formed by a rear-engaging element which bounds the recess and is opposite the first hook nose of the suspension hook and which has a free rear-engaging element end, which extends forwardly in direction towards the free rear-engaging hook end of the hook nose of the suspension hook and which partly engages over the rosette wall part receiving space of the recess.

19923022_1 (GHMatters) P121881.AU

It is thereby possible during pivoting up of the first railing device for the purpose of advance mounting thereof to avoid unintended lifting, under pressure, of the first hook nose and thus of the first suspension hook of the first railing rod of the first railing device out of the first passage opening of the first rosette due to loading, which might occur in that case, of the first railing rod in the direction of the first railing rod longitudinal axis or parallel to the first railing rod longitudinal axis and in the direction of the first railing rod end, so that harm, particularly to persons is avoided when the advance mounting takes place.

Through the following measures, which concern optional, preferred embodiments, the risk of lifting of the first railing rod out of the first passage opening of the first rosette can be further reduced, with a correspondingly further reduced risk of injury.

Preferably, it can be provided that the rear-engaging element is bounded by an upper, first, preferably planar, contact support surface of the contact support surfaces, which bounds the rosette wall part receiving space of the recess and is arranged at an inclination to the railing rod longitudinal axis of the railing rod of the railing device and which extends rearwardly from the free rear-engaging element end.

In that case it can be provided that the upper, first contact support surface of the rear engaging element includes with the railing rod longitudinal axis of the railing rod of the railing device a second angle which is greater than 50 degrees or greater than 60 degrees.

For preference the suspension hook can have a contact support surface of the contact support surfaces of a rear recess boundary wall part which rearwardly bounds the rosette wall part receiving space.

In that case it can be provided that the suspension hook and the passage opening of the rosette as well as wall parts bounding the passage opening are formed to be matched to one another in such a way that the railing rod of the railing device is transferrable or transferred or will be transferred from its first railing rod mounting intermediate setting - from which the railing rod is pivotable as an advance railing into its horizontal installation setting with the help of the second scaffolding post and in which the hook nose of the suspension hook at least partly engages in the passage of the rosette, when, during pivotation of the railing rod of the railing device relative to the first scaffolding post with the help of the second

19923022_1 (GHMatters) P121881.AU scaffolding post for the purpose of mounting of the railing device as an advance railing, mounting pressure forces arise in the direction of the railing rod longitudinal axis of the railing rod or parallel to the railing rod longitudinal axis of the railing rod and in the direction of the first railing rod end of the first railing rod and can lead to forward movement of the first railing rod end of the railing rod in the direction of its railing rod longitudinal axis - into a second railing rod mounting intermediate setting in which the railing rod further extends at an inclination to the scaffolding post longitudinal axis of the first scaffolding post and the hook nose of the suspension hook further engages at least partly in the passage opening of the first rosette and in which due to the effective mounting pressure forces the hook nose of the suspension hook bears by its front hook nose outer contour either against an opposite inner contour of the passage opening or against an opposite outer contour of the first scaffolding post and also the contact support surface of the recess boundary wall part bears against a lower side or against a lower outer edge of the first rosette wall part of the first rosette and in which the rear-engaging element engages by its rear-engaging element end behind the rosette wall part.

Further, it can be provided that the contact support surface of the recess boundary wall part includes with the railing rod longitudinal axis of the railing rod of the railing device a first angle of approximately 90 degrees.

Provision can be made for the upper, first contact support surface of the rear-engaging element and the contact support surface of the recess boundary wall part to include a third angle smaller than 170 degrees or smaller than 160 degrees.

It can be provided that the rear-engaging element is bounded by a lower, second, preferably planar, contact support surface of the contact support surfaces, which is preferably opposite the free rear-engaging hook end and which is arranged at an inclination to the railing rod longitudinal axis of the railing rod of the railing device and extends rearwardly from the free rear-engaging element end.

The lower, second contact support surface of the rear-engaging element preferably includes with the railing rod longitudinal axis of the railing rod of the railing device a fourth angle of approximately 45 degrees.

According to a particularly preferred embodiment it can be provided that the free rear

19923022_1 (GHMatters) P121881.AU engaging element end of the rear-engaging element as considered in the direction of the railing rod longitudinal axis or parallel to the railing rod longitudinal axis has a spacing, which corresponds with a smallest recess width of the recess, from the free rear-engaging hook end of the hook nose of the suspension hook. For preference, the free rear-engaging element end of the rear-engaging element as considered in the direction of the railing rod longitudinal axis or parallel to the railing rod longitudinal axis and the free rear-engaging hook end of the hook nose of the suspension hook can be matched to one another and/or arranged in such a way and/or the smallest recess width can be selected in such a way that the railing or the suspension nose of the suspension hook can still be suspended with sufficient space in a passage opening of the rosette, but the rear-engaging element or the undercut also fulfils its function, whereby lifting-out of the suspension nose of the railing rod and thus the railing device is avoided or prevented.

According to a particularly preferred embodiment the first scaffolding post can be a first modular scaffolding post and/or the second scaffolding post can be a second modular scaffolding post, wherein several rosettes, which are preferably each formed as an apertured disc and, in particular, are the same, are permanently secured, preferably by welding, to the or each modular scaffolding post, wherein the rosettes each have a plurality of passage openings which are arranged at a mutual spacing in circumferential direction and which as considered in a direction transverse or perpendicular to the respective scaffolding post longitudinal axis away therefrom are each outwardly bounded by rosette wall parts, particularly wall parts formed as support webs, which preferably outwardly bound the respective rosette as considered in a direction transverse or perpendicular to the or the respective scaffolding post longitudinal axis away therefrom, and wherein the rosettes as considered in the direction of the scaffolding post longitudinal axis of the relevant or respective modular scaffolding post are each arranged at a mutual spacing corresponding with a grid dimension, and wherein the railing device is detachably secured to a first rosette of the rosettes of the first modular scaffolding post and to a second rosette of the rosettes of the second modular scaffolding post.

According to a preferred embodiment there can be provided a further railing device which is preferably formed to be the same as the railing device. The further railing device can be detachably secured to a third rosette of the rosettes of the first modular scaffolding post and to a fourth rosette of the rosettes of the second modular scaffolding post, preferably wherein the third rosette is arranged at the spacing, which corresponds with the grid dimension, from

19923022_1 (GHMatters) P121881.AU the first rosette of the first modular scaffolding post and wherein the fourth rosette is arranged at the spacing, which corresponds with the grid dimension, from the second rosette of the second modular scaffolding post.

According to a preferred variant of embodiment it can be provided that the first railing rod end and the second railing rod end of the railing rod or of the respective railing rod are of different design. In that case, according to a particularly preferred variant of embodiment it can be provided that the second railing rod end is connected by way of a joint with a connecting head which is pivotable relative to the scaffolding rod about a joint axis - which preferably extends perpendicularly to the railing rod longitudinal axis of the railing rod - of the joint and which is detachably connectible or connected by means of a securing wedge, which preferably can be plugged through a passage opening of the passage openings of the first rosette or one of the rosettes of the second scaffolding post, with the first rosette or one of the rosettes of the second scaffolding post.

Alternatively, it can be provided that the second railing rod end of the or each railing rod is formed to be the same as the first railing rod end of the or each railing rod. In that case it can be preferably provided that the first railing rod end and the second railing rod end of the or each railing rod are formed to have mirror symmetry with respect to a longitudinal centre plane of symmetry extending perpendicularly to the or the respective rod longitudinal axis.

It will be obvious that the afore-mentioned measures can be combined with one another as desired within the scope of feasibility.

Further aspects, features and advantages of the invention can be inferred from the following description part, in which preferred embodiments of the invention are described by way of the drawings and in which:

Fig. 1 shows a side view of a partly constructed facade scaffolding, for illustration of a starting position ahead of advance mounting of the two railing rods, which are shown on the left and which respectively extend at an inclination and parallel to one another, of the associated two railing devices;

Fig. 2 shows a side view of the partly constructed facade scaffolding, in which the two railing devices with the railing rods thereof are respectively mounted in

19923022_1 (GHMatters) P121881.AU advance in their horizontal installation setting;

Fig. 3 shows a section along the section line 3-3 in Figure 2, particularly for illustration of a rosette of the rosettes of the scaffolding posts;

Fig. 4.1 shows a side view of a first embodiment of a railing device;

Fig. 4.2 shows the railing device according to Figure 4.1 in a plan view, which is turned relative thereto through 90 degrees about the railing rod longitudinal axis thereof, from above;

Fig. 5.1 shows a side view of a second embodiment of a railing device;

Fig. 5.2 shows the railing device according to Figure 5.1 in a plan view, which is turned relative thereto through 90 degrees about the railing rod longitudinal axis thereof, from above;

Fig. 6 shows a separate insertion part of flat metal, which serves for construction of the first railing rod end of the first railing rod according to Figures 4.1 and 4.2 and for construction not only of the first, but also of the second railing rod end of the second railing rod according to Figures 5.1 and 5.2;

Fig. 7 shows a three-dimensional illustration of the separate insertion part according to Figure 6; and

Figs. 8.1 to 8.8 show several mounting phases which can arise in succession during advance mounting of the railing device shown in Figures 4.1 and 4.2.

Figure 1 shows a partly constructed facade scaffolding 20, for illustration of a starting position ahead of advance mounting of the two railing rods 22.1.1, 22.1.2, which are shown on the left, of the associated two identical railing devices 21.1.1, 21.1.2. These railing devices 21.1.1, 21.1.2 are each detachably connected with an already vertically erected elongate scaffolding post 23; 23.1 and are pivotable relative thereto. The two railing devices 21.1.1, 21.1.2 extend parallel to one another and each at an inclination to the horizontal and also at an inclination to the scaffolding post longitudinal axes 24, 24.1, 24.2. Figure 1 shows

19923022_1 (GHMatters) P121881.AU the partly constructed facade scaffolding 20 in an intermediate mounting phase before the two railing devices 21.1.1, 21.1.2 are pivoted upwardly and set up by means of the long second scaffolding post 23.2, which is shown on the left, on the short scaffolding post 23.3 shown on the left at the outside. The partly constructed facade scaffolding 20 shown in Figure 1 is illustrated in strongly simplified form. It is known to the expert how with the help of which additional scaffolding components such as, for example, foot spindles, horizontal longitudinal bars, horizontal transverse bars and diagonals, such facade scaffoldings are to be securely and stably set up in the form of so-called modular scaffoldings.

The facade scaffolding 20 comprises a plurality of individual vertical posts 23; 23.1, 23.2, 23.3, which are respectively modular scaffolding posts. The facade scaffolding 20 is or will be constructed starting from individual short modular scaffolding posts 21.3. These each comprise a tube connector 25. The short modular scaffolding posts 21.3 are or will be each erected in such a manner that the tube connector 25 thereof projects vertically upwardly. The short scaffolding posts 21.3 each have an effective scaffolding post length 26.3, which is approximately 1 metre. Two apertured discs 30; 30.1, 30.2 are permanently secured to each of the short modular scaffolding posts 21.3. The two apertured discs 30; 30.1, 30.2 are, as considered in the direction of the respective scaffolding post longitudinal axis 24.3 of the respective short scaffolding post 21.3, secured to one another at a longitudinal spacing 27, which corresponds with a grid dimension, of approximately 50 centimetres.

Vertical individual long modular scaffolding posts 23, 23.1, 23.2 are or are to be plugged onto the tube connectors 25 of the vertical, individual short modular scaffolding post 23.3 on the front first longitudinal side 28.1, which is shown in Figure 1, of the facade scaffolding 20. These long modular scaffolding posts 23: 23.1, 23.2 extend in the direction of the scaffolding post longitudinal axes 24, 24.1, 24.2 thereof rectilinearly from their lower post end to their upper post end over an effective post length 26, 26.1, 26.2. The effective post length 26, 26.1, 26.2 is approximately 2 metres. At the upper ends thereof these individual scaffolding posts 23; 23.1, 23.2 each have a tube connector 25 for plugging-on of a further vertical post, particularly scaffolding post or modular scaffolding post.

A contact surface for the erection of a next-higher scaffolding post is formed at the upper post end of each scaffolding post 23; 23.1, 23.2, 23.3. The respective contact surface forms the respective upper post end and upwardly bounds the effective post length. The respective tube connector 25 extends upwardly beyond the respective contact surface. Each individual

19923022_1 (GHMatters) P121881.AU scaffolding post 23; 23.1, 23.2, 23.3 consists of a round tube, which has an outer circumference and an outer diameter, of galvanised steel. The scaffolding post longitudinal axes 24; 24.1, 24.2, 24.3 of the individual scaffolding posts 23; 23.1, 23.2, 23.3 are arranged or set up parallel to one another. Adjacent individual scaffolding posts 23; 23.1, 23.2, 23.3 of these individual scaffolding posts 23; 23.1, 23.2, 23.3 are arranged at a longitudinal spacing from one another. Several rosettes 30 are permanently secured by welding to each of these individual scaffolding posts 23; 23.1, 23.2, 23.3 at a mutual longitudinal spacing 27 corresponding with the grid dimension. The respective uppermost apertured disc or rosette 30 is secured at a rosette spacing from the respective upper post end. The respective lowermost rosette 30 has a second rosette spacing from the respective lower post end of these scaffolding posts 21.1, 21.2. The second rosette spacing is larger than the first rosette spacing.

Each rosette is formed as an apertured disc 30. As illustrated in, in particular, Figure 3 each apertured disc 30 has eight passage openings 31.1, 31.2. These are formed as passage holes. Each apertured disc 30 has four oval small passage openings 31.1 and four trapezium-shaped large passage openings 31.2. The small and large passage openings 31.1 and 31.2 are arranged to be respectively offset relative to one another in circumferential direction so that in circumferential direction a large passage opening 31.2 thus follows each small passage opening 31.1 and conversely. Directly adjacent passage openings 31.1, 31.2 are respectively arranged to be offset relative to one another in circumferential direction at a same-size circumferential angle 32. The circumferential angle 32 is 45 degrees.

The passage openings 31.1, 31.2 of each apertured disc 30; 30.1, 30.2, 30.3, 30.4 are bounded towards the outside, thus in a radial first direction perpendicular to the respective scaffolding post longitudinal axis 24; 24.1, 24.2, 24.3, 24.4 away therefrom, by outer rosette wall parts 33.1. These outer wall parts are each a rosette web. The small passage openings 31.1 of the passage openings 31.1, 31.2 of each apertured disc 30; 30.1, 30.2, 30.3, 30.4 are bounded towards the inside, thus in a second direction opposite to the first direction, by inner rosette wall parts 33.2. These form inner webs. Respective directly adjacent passage openings 31.1, 31.2 are bounded by radially extending separating webs 34.

Each apertured disc 30 engages around the respective scaffolding tube, which is constructed as a round tube, of the associated scaffolding post 23 over the full circumference. Each apertured disc 30 is formed as a circularly annular disc. The inner diameter of each

19923022_1 (GHMatters) P121881.AU apertured disc 30 is slightly larger than the respective outer diameter of the respective scaffolding tube of the respective scaffolding post 23 onto which the disc is plugged. Each apertured disc 30 is welded to the associated scaffolding tube of the respective scaffolding post 23. Each apertured disc 30 has a substantially constant disc thickness 35 of, for example 9 millimetres or 10 millimetres. Each apertured disc 30 has a first side surface 36.1 and a second side surface 36.2, which faces away therefrom in an opposite direction and extends parallel to the first side surface 36.1. In the erected state of each scaffolding post 23, at each apertured disc 30 the first side surface 36.1 forms the upper side and the second side surface 36.2 forms the lower side of the apertured disc 30. Each apertured disc 30 is radially inwardly bounded by an inner end surface having an inner diameter. Each apertured disc 30 is radially outwardly bounded by an outer end edge 37 with an outer end surface 38 having an outer diameter. The inner end surface and the outer end surface 38 are arranged concentrically with respect to one another. The encircling outer end surface 38 extends perpendicularly to the first side surface 36.1 and perpendicularly to the second side surface 36.2. The first side surface 36.1, which is upper in the erected state, of each apertured disc 30 transitions into the encircling outer end surface 38 of the encircling outer end edge 37 by way of a circular first apertured disc edge 39.1, which in the erected state of the relevant scaffolding post is an upper edge of the apertured disc 30. The second side surface 36.2, which is lower in the erected state, of each apertured disc 30 transitions into the encircling outer end surface 38 of the encircling outer end edge 37 by way of a circular second apertured disc edge 39.2, which in the erected state of the relevant scaffolding post 23 is a lower edge of the apertured disc 30.

A first embodiment of a first railing device is shown in Figures 4.1 and 4.2. This railing device is designated first railing device 21.1. The first railing device 21.1 has a first railing end 40.1 and a second railing end 40.2. The first railing device 21.1 comprises a first railing rod 22.1. The first railing rod 22.1 has a first railing rod end 41.1 and a second railing rod end 41.2, which extends away from the first railing rod end 41.1 in an opposite direction. The first railing rod 22.1 extends rectilinearly in the direction of its first railing rod longitudinal axis 42.1.

With respect to the first railing device 22.1 in this first embodiment, the first railing end 43.1 and the second railing end 43.2 are of different design. Moreover, in this embodiment the first railing rod end 41.1 of the first railing rod 22.1 and the second railing rod end 41.2 of the first railing rod 22.1 are of different design.

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The first railing rod 22.1 comprises a straight first tube 44.1, preferably a round tube. The first tube 44.1 has a first tube end 45.1.1 and a second tube end 45.1.2. The tube 44.1 extends in the direction of its tube longitudinal axis 91.1. The first tube end 45.1.1 has a first receiving slot 46.1.1 into which a hook plate 51, which has a suspension hook 50, is inserted and permanently connected with the first tube 44.1 by welding. The first railing rod end 40.1 of the first railing rod 22.1 is formed by the suspension hook 50 or by the hook plate 51. More detailed discussion with respect thereto is given further below. The second railing rod end 40.2 of the first railing rod 22.1 is formed by the second tube end 45.1.2 of the tube.

The second tube end 45.1.2 or the second railing rod end 40.2 is pivotably connected with a connecting head 52. The connecting head 52 forms the second railing end 40.2 of the first railing device 21.2. The connecting head 52 is captively connected with a fastening wedge 53, which can be inserted through a passage opening 31.1, 31.2 of the passage openings 31.1, 31.2 of an apertured disc 30 and by means of which the connecting head 52 is detachably fastenable to an apertured disc 30 of another or the second scaffolding post 23.2. The connecting head 52 has an upper head part 54.1 and a lower head part 54.2, which are integrally connected together by way of a connecting part 55. The upper head part 54.1 and the lower head part 54.2 are separated from one another by a plug-on slot 56 which is horizontal in the installed setting. The connecting head 52 can be plugged onto an apertured disc 30 of the apertured discs 30 by way of its plug-on slot 56. Such connecting heads, for example of the Applicant, have been known for many years and are also termed wedge heads in correspondence with the wedge-shaped outer contour thereof. Each connecting head 52 is permanently connected by way of its respective connecting part 55 to a U-bracket 57, which is open in a direction away from the connecting head 52, by welding. The U bracket 57 is secured to the second railing rod end 41.2 of the first railing rod 22.1 of the first railing device 21.1, preferably to be detachable again, by means of a joint 58, for example a cylinder screw 59, preferably with a hexagonal head, which is secured by a nut 60, preferably a hexagonal nut, screwed onto the thread of the screw. The connecting head 52 provided with the U-bracket 57 can be pivoted relative to the first railing rod 22.1 about a pivot axis or joint axis 61 of the joint 58 with respect to the first tube 44.1 or the first railing rod 22.1. The pivot axis 61 extends perpendicularly to the first railing rod longitudinal axis of the first railing rod and parallel to a slot centre plane 62 of the plug-on slot 56 of the connecting head 52. In addition, the pivot axis 61 extends perpendicularly to a slot centre plane 63 of the first receiving slot 46.1.1 of the first tube 44.1 or extends perpendicularly to a longitudinal centre

19923022_1 (GHMatters) P121881.AU plane 64 of the suspension hook 50, which is made from a flat material and which forms the other, first railing rod end 41.1 of the first railing rod 22.1 of the first railing device 21.1.

The suspension hook 50 is produced in the form of a separate component, which is shown in Figures 6 and 7. The suspension hook 50 is constructed as an insert component intended for the purpose of being inserted into the first tube end 45.1.1 of the first tube 44.1 of the first railing rod 22.1. The suspension hook 50 is a hook plate 51. The suspension hook 50 consists of a flat material, preferably flat steel. The suspension hook 50 or the hook plate 51 has a planar first side surface 65.1 and a planar second side surface 65.2, formed to be parallel to the first side surface 65.1. The two side surfaces 65.1, 65.2 extend in opposite directions away from one another. The suspension hook 50 or hook plate 51 is bounded around the circumference thereof by an end surface 66 formed perpendicularly to the side surfaces 65.1, 65.2.

The suspension hook 50 has at its front end, which faces away from the first tube 44.1, a hook nose 67. The hook nose 67 extends - in the installation setting in downward direction away from a hook wall part 68 which is upper in the installation setting. The hook nose 67 has a front outer contour 69 in the form of an end edge. The end edge 69 has a forwardly rounded cross-section in a sectional plane parallel to the parallel side surfaces 65.1, 65.2. The hook nose 67 has a free rear-engaging hook end 70. The rear-engaging hook end 70 extends rearwardly 77 in the direction of the second railing rod end 41.2 and parallel to the first railing rod longitudinal axis 42.1.

In the horizontal installation setting 71.1 of the first railing rod 22.1 the first railing rod end 41.1 has, at the lower side 72, a first recess 73. The recess 73 is open downwardly 74 with respect to the side surfaces 65.1, 65.2 extending away from one another. The first recess 73 of the suspension hook 50 is bounded by contact support surfaces 78.1 to 78.7 of a railing rod end support part 79. The recess 73 includes a rosette wall part receiving space 80, which is suitable and intended for at least partial reception of a rosette wall part 33.1 of the rosettes 30, which wall part radially outwardly bounds a passage opening 30.1 of the passage openings 30; 30.1, 30.2 of the respective apertured disc 30.

The hook nose 67 of the suspension hook 50 goes over at its end, which faces away from the free rear-engaging hook end 70, integrally into the upper hook wall part 68. The upper hook wall part 68 is bounded by an upper contact support surface 78.1 of the contact support

19923022_1 (GHMatters) P121881.AU surfaces 78.1 to 78.7, which bounds or bound the rosette wall part receiving space 80 of the recess 73.

The upper hook wall part 68 goes over in a direction rearwardly 77 and downwardly 74 integrally into a recess boundary wall part 81 of the suspension hook 50. This has a contact support surface 78.2 of the contact support surfaces 78.1 to 78.7, which rearwardly 77 bound the rosette wall part receiving space 80 of the recess 73. This contact support surface 78.2 is designated upper contact support surface. This contact support surface 78.2 of the recess boundary wall part 81 includes with the first railing rod longitudinal axis 42.1 of the first railing rod 22.1 a first angle 82 of preferably 90 degrees.

The recess boundary wall part 81 goes over downwardly 74 integrally into a rear-engaging element 83 according to the invention in the form of a rear-engaging wall part of the suspension hook 50. The rear-engaging wall part 83 has a free rear-engaging element end 84 which extends forwardly 76 in the direction of the free rear-engaging hook end 70 of the hook nose 67 of the suspension hook 50. The rear-engaging element 83 engages by its rear-engaging element end 84 around the rosette wall part receiving space 80 of the recess 73. In addition, the hook nose 67 engages by its rear-engaging hook end 70 over the rosette wall part receiving space 80 of the recess 73. The free rear-engaging element ends 84 of the rear-engaging element 83 has, as considered in the direction of the railing rod longitudinal axis 42.1, 42.2, a spacing 99, which corresponds with a smallest recess width of the recess 73, from the free rear-engaging hook end 70 of the hook nose 67 of the suspension hook 50.

The rear-engaging element 83 is bounded upwardly 75 by an upper contact support surface 78.3 of the contact support surfaces 78.1 to 78.7. This extends at an inclination upwardly 75 starting from the free rear-engaging element end 84, which has the form of an edge extending perpendicularly to the two side surfaces 65.1, 65.2.

The upper contact support surface 78.3 of the rear-engaging element 83 goes over by way of a small radius into the contact support surface of the recess boundary wall part 81, with formation of a kink 85 in the form of a transverse edge. The upper contact support surface 78.3 of the rear-engaging element 83 includes with the first railing rod longitudinal axis a second angle 86 of preferably approximately 66 degrees.

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The upper contact support surface 78.3 of the rear-engaging element 83 includes with the upper contact support surface 78.2 of the recess boundary wall part 81 a third angle 87 of preferably approximately 156 degrees.

The engagement-behind element 83 is bounded downwardly 74 by a lower contact support surface 78.4 of the contact support surfaces 78.1 to 78.7. This extends at an inclination downwardly 74 and rearwardly 77 starting from the free rear-engaging element end 84. This lower contact support surface 78.4 extends at an inclination to the first railing rod longitudinal axis 41.1 at a fourth angle 88 of here approximately 45 degrees.

The rear-engaging element 83 goes over integrally at an inclination downwardly 74 and rearwardly 77 into a lower support wall part 89, which is bounded by an inclined contact support surface 78.5 of the contact support surfaces 78.1 to 78.8. The lower contact support surface 78.4 of the rear-engaging element 83 goes over in bend-free manner downwardly 74 and rearwardly 77 into the contact support surface 78.5 of the support wall part 89, so that these two contact support surfaces 78.4, 78.5 form a common, preferably planar, contact support surface 78.6.

A second embodiment of a railing device is shown in Figures 5.1 and 5.2. This railing device is designated second railing device 21.2. The second railing device 21.2 consists of a second railing rod 22.2 with two identical suspension hooks 50, 50. These two suspensions hooks 50, 50 are of the same form as the suspension hook 50 of the first railing rod 22.1 of the first railing device 21.1. To that extent, with respect to the constructional details of the two suspension hooks 50, 50 of the second railing device reference can be made to the preceding explanations concerning the first suspension hook 50 in conjunction with the description of the first embodiment of the first railing device 21.1 in connection with Figures 6 and 7.

The second railing device 21.2 has a first railing end 43.1 and a second railing end 43.2. The first railing end 43.1 is a first railing rod end 90.1 of the second railing rod 22.2. The second railing end 43.2 is a second railing rod end 90.2 of the second railing rod 22.2. The second railing rod 22.2 extends rectilinearly in the direction of its second railing rod longitudinal axis 42.2. The second railing rod 22.2 has the first railing rod end 90.1 and a second railing rod end 90.2 facing away therefrom in an opposite direction. The first railing rod end 90.1 is formed with a first suspension hook 50 and the second railing rod end 90.2 is

19923022_1 (GHMatters) P121881.AU formed with a second suspension hook 50. The second railing rod end 90.2 is of the same form as the first railing rod end 90.1.

The second railing rod 22.2 comprises an elongate, straight second tube 44.2, preferably a round tube. The tube 44.2 has a first tube end 45.2.1 and its second tube end 45.2.2 extending away therefrom in an opposite direction. The tube 44.2 extends in the direction of its tube longitudinal axis 91.2. A hook plate 51 of the two identical hook plates 51, 51 is inserted into each tube end 45.2.1, 45.2.2 of the tube 44.2 in a respective receiving slot 46.1.1, 46.1.2 and permanently connected with the tube 44.2 by welding. The two suspension hooks 50, 50 of the two hook plates 51, 51 extend parallel to the tube longitudinal axis and include the tube longitudinal axis 91.2. The two suspension hooks 50, 50 or hook plates 51, 51 each extend by the parallel side surfaces thereof along a respective longitudinal centre plane 92.1, 92.2, which includes the tube longitudinal axis 91.2 or the railing rod longitudinal axis 42.2.

The second railing rod 22.2 is formed symmetrically with respect to a rod centre plane 93 containing the two longitudinal centre planes 92.1, 92.2 of the two suspension hooks 50, 50. The rod centre plane can also be termed longitudinal centre plane of symmetry. In addition, the second railing rod 22.2 is formed symmetrically with respect to a transverse centre plane 94, which is formed perpendicularly to the tube longitudinal axis 91.2 or perpendicularly to the second railing rod longitudinal axis 42.2. The transverse centre plane 94 can also be designated by that.

The second railing device 21.2 is a second railing rod 22.2. The second railing device 21.2 has a first railing end 43.1 and a second railing end 43.2, which extends away from the first railing end 43.1 in an opposite direction. The second railing rod 22.2 has a first railing rod end 90.1 and a second railing rod end 90.2, which extends away from the first railing rod end 90.1 in an opposite direction. The first railing end 43.1 or the first railing rod end 90.1 of the second railing device 21.2 and the second railing end 43.2 of the second rail rod end 90.2 of the second railing device 21.2 are of the same form. Thus, in this second embodiment the first railing end 43.1 and the second railing end 43.2 are of the same form. In addition, in this second embodiment the first railing rod end 90.1 of the second railing rod 22.2 and the second railing rod end 90.2 of the second railing rod 22.2 are of the same form.

The mounting of an advance railing with use of two identical first railing devices 21.1.1,

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21.1.2, which are shown in Figures 4.1 and 4.2 and each of which is a respective railing device 21.1 as shown in Figures 4.1 and 4.2, is described in the following.

In that case the procedure starts from a first erected scaffolding bay 95.1, which is illustrated in Figure 1 in substantially simplified form by the scaffolding posts 23, 24, 23.1, 24.1 shown in the sheet centre and at the righthand sheet edge and by the two upper, identical railing devices 21.1, which are detachably fastened by way of their respective railing ends not only to the upper long scaffolding post 23.1 shown in the sheet centre, but also to the upper long scaffolding post 23 shown at the righthand sheet edge. In that regard, the upper railing device 21.1 is secured in each instance to the uppermost fourth apertured disc 30.4 of the respective four apertured discs 30 of the two long scaffolding posts 23.1, 23 in a horizontal installation setting 71.1, whilst the lower railing device 21.1 is secured in each instance to the third apertured disc 30.3, which follows directly below the fourth apertured disc, of the respective scaffolding post 23.1, 23 in a horizontal installation setting 71.2.

For the purpose of advance mounting of the railing devices 21.1.1, 21.1.2 the procedure can be as follows for the second scaffolding bay 95.2 shown on the left in Figure 1 in substantially simplified form.

Firstly, a fitter, who is not shown in the figures, suspends a first railing device 21.1.1 by its suspension hook 50 at its first railing end 40.1, thus at its first railing rod end 41.1, in a first passage opening 31.1 of the third apertured disc 30.3 of the already erected long first scaffolding post 23.1. Subsequently, the fitter can let this first railing device 21.1.1 hang down under gravitational force. The fitter then suspends a second identical railing device 21.1.2 by its suspension hook 50 at its first railing end, thus at its first railing rod end, in a first passage opening 31.1 of the fourth apertured disc 30.4 of the already erected long first scaffolding post 23.1. The fitter can then also let this second railing device 21.1.2 hang down under gravitational force. It will be obvious that the procedure can also be the reverse, thus initially the second railing device 21.1.2 can be suspended and subsequently the first railing device 21.1.1.

Subsequently, the fitter takes a further, second long scaffolding post 23.2, which is of the same form as the first scaffolding post 23.1 and thus also carries four of the apertured discs 30, and manually transports this to an area in which the fitter can by hand reach the second railing end, which is formed by the connecting head 52, of the second railing device 21.1.2.

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There the fitter then manually brings the connecting head 52 of the second railing device 21.1.2, which is already suspended at the fourth apertured disc 30.4 of the first scaffolding post 23.1, together with the fourth apertured disc 30.4 of the second scaffolding post 23.2, onto which the fitter then plugs this second connecting head 52 by its slot 56. The fitter subsequently aligns this second connecting head 52 in such a way relative to the fourth apertured disc 30.4 of the second scaffolding post 23.2 that its fastening wedge 53 can be plugged through a small, first passage opening of the passage openings 31.1, 31.2 of the fourth apertured disc 30.4 of the second scaffolding post 23.2. The fitter then plugs this fastening wedge 53 through this small, first passage opening of the fourth apertured disc 30.4 without fixedly wedging this thereat.

The fitter subsequently manually brings the first connecting head 52 of the first railing device 21.1.1, which is already suspended at the third apertured disc 30.3 of the first scaffolding post 23.1, together with the third apertured disc 30.3 of the second scaffolding post 23.2, onto which the fitter then plugs this first connecting head 52 by its slot 56. Subsequently, the fitter aligns this first connecting head 52 relative to the third apertured disc 30.3 of the second scaffolding post 23.2 in such a way that its fastening wedge 53 can be plugged through a small, first passage opening of the passage openings 31.1, 31.2 of the third apertured disc 30.3 of the second scaffolding post 23.2. The fitter then plugs the fastening wedge 53 through this small, first passage opening of the third apertured disc 30.3 without fixedly wedging this thereat.

The fitter can thereafter fixedly wedge, for example by means of a hammer blow, the first connecting head 52 and the second connecting head 52 by way of the respective fastening wedge 53, 53 thereof to the second scaffolding post 23.2. A mounting phase is now achieved in which the second scaffolding post 23.2 is vertically oriented and which is illustrated in Figure 1 on the left.

The fitter can now manually upwardly guide the second scaffolding post 23.2, together with the two railing devices 21.1.1, 21.1.2 detachably fastened thereto and pivotable relative to these, until in a mounting setting in which the fitter can plug the second scaffolding post 23.2 onto a lower, third scaffolding post 23.3. This is the short scaffolding post 23.3, which in the example shown in Figure 1 is shown therein on the outside left, with two apertured discs 30. It will be obvious that for construction of a next-higher storey the next-following long scaffolding posts can for that purpose be placed on the already mounted long scaffolding

19923022_1 (GHMatters) P121881.AU posts.

After the elevating and setting up of the long second scaffolding post 23.2 on the short third scaffolding post 23.3 a mounting phase illustrated in Figure 2 is reached. In this mounting phase the first railing device 23.1.1 is disposed in a horizontal installed setting 71.1 and the second railing device 21.1.2 is also in a horizontal installed setting 71.2. If a scaffolding floor, which is not shown in the figures, is mounted at the level of the respective second apertured disc 30.2 of both the first scaffolding post 23.1 and the second scaffolding post 23.2, the first railing device 21.1.1 can function as a knee railing or as a knee bar and the second railing device 21.1.2 can function as a handrail or as a hip railing or back railing. In the embodiment according to Figure 2, both the first railing device 21.1.1 and the second railing device 21.2.2 are mounted in advance.

Several mounting phases are described in the following by way of Figures 8.1 to 8.8 on the basis of the example of the first railing device 21.1 shown in the Figures 4.1 and 4.2, which mounting phases can arise during advance mounting of this first railing device 21.1.

A first mounting phase is illustrated in Figure 8.1, in which a first apertured disc 30 of a first scaffolding post 23 is delivered to the first railing rod 22.1, which has the first railing rod end 41.1, of the first railing device 21.1 for the purpose of advance mounting thereof.

A succeeding second mounting phase, in which the first railing rod 22.1 of the first railing device 21.1 is guided by its first railing rod end 41.1 until closely in front of the first apertured disc 30 of the first scaffolding post 23 in the region of a first passage opening 31.1 of the passage openings 31.1, 31.2 thereof, is illustrated in Figure 8.2.

A succeeding third mounting phase is illustrated in Figure 8.3, in which the first railing rod 22.1 of the first railing device 21.1 is further guided up to the first apertured disc 30 in such a way that it bears by an inclined abutment surface 78.6, which is also designated common contact support surface, against the outer end surface 38, which is also designated outer boundary surface, of a first rosette wall part 33.1 of the rosette 30, which wall part outwardly bounds a first passage opening 31.1 of the passage openings of the rosette 30 in a direction perpendicular to the first scaffolding post longitudinal axis 24.1 of the first scaffolding post 24.1 away therefrom. This inclined abutment surface 78.6 is that contact support surface 78.6 which is formed by the lower contact support surface 78.4 of the rear-engaging element

19923022_1 (GHMatters) P121881.AU

83 and the contact support surface 78.5 of the lower support wall part 89 of the suspension hook 50.

In Figure 8.4 there is shown a succeeding fifth mounting phase in which the first railing rod 22.1 of the first railing device 21.1 starting from the mounting setting according to Figure 8.3 was - with an inclined setting remaining the same relative thereto or with a desired inclination angle 98.1, which remains the same relative thereto, of the first railing rod 22.1 of approximately 45 degrees - allowed to drop down by the hook nose 67 of its suspension hook 50 under gravitational force so that its hook nose 50 extends through the first passage opening 31.1 of the apertured disc 30 and the suspension hook 50 is supported on the first rosette wall part 33.1. In that case, the suspension hook 50 is supported by the upper contact support surface 78.1, which bounds the rosette wall part receiving space 80 of the recess 73, of the upper hook wall part 68 on the front outer edge 39.1 of the first rosette wall part 33.1 of the rosette 30 and is supported by the rear contact support surface 78.7, which bounds the rosette wall part receiving space 80 of the recess 73, of the hook nose 67 on the inner edge 39.3 of the first rosette wall part 33.1 of the first rosette 30. From this mounting phase the first railing rod 22.1 is disposed in a first railing rod mounting intermediate setting from which the first railing rod 22.1 for construction of an advance railing can or is pivoted upwardly relative to the first scaffolding post 23.1 with the help of the second scaffolding post 23.2, which is not shown here.

Illustrated in Figure 8.5 is a succeeding sixth mounting phase which is reached when the first scaffolding rod 22.1 of the first railing device 21.1 in the course of mounting of the advance railing is, for example, moved forwardly 76 in the direction of the arrow 96 illustrated in Fig. 8.4 at below left, thus in the direction of the railing rod longitudinal axis 42.1 of the first railing rod 22.1 of the first railing device 21.1, in particular in the course of a simultaneous upward pivotation of the first railing rod 22.1 relative to the first scaffolding post 23.1. As a result, pressure forces can arise which are of such magnitude that a movement of the first railing rod end 41.1 of the first scaffolding rod 22.1 in the direction of the arrow 96 shown in Figure 8.4 can occur. In that case the first scaffolding rod 22.1 is pushed by its first railing rod 41.1 until the hook nose 67 bears by its frontal rounded contour 69 against an inner contour 29, which is opposite as considered in a forward direction 76, of the first passage opening 31.1 of the first apertured disc 30 of the first scaffolding post 23.1. As is apparent, in that case the free rear-engaging hook end 70 of the hook nose 67 of the suspension hook 50 migrates forwardly 76 and upwardly 75 relative to the rest setting shown in Fig. 8.4. In this rest setting

19923022_1 (GHMatters) P121881.AU also the suspension hook 50 continues to still be supported by the upper contact support surface 78.1, which bounds the rosette wall part receiving space 80 of the recess 73, of the upper hook wall 68 on the front outer edge 39.1 of the first rosette wall part 33.1 of the rosette 30.

A succeeding sixth mounting phase is illustrated in Figure 8.6, this phase being achieved when the first scaffolding rod 22.1 of the first railing device 21.1 is acted on - particularly in a case of a simultaneous upward pivotation or through a simultaneous upward pivotation of the first railing rod 22.1 relative to the first scaffolding post 23.1 further in the direction of the railing rod longitudinal axis 42.1 of the first railing rod 22.1 - by pressure forces which are of such a magnitude that the hook nose 67 by virtue of its forwardly rounded outer contour 69 is displaced further forwardly 76 and upwardly 75 in the direction of the arrow 97 shown in Figure 8.5. As apparent, in that case the free rear-engaging hook end 70 of the hook nose 67 of the suspension hook 50 migrates further upwardly relative to the rest setting shown in Figure 8.5, wherein now the free rear-engaging hook end 70 is disposed in the first passage opening 31.1 of the first apertured disc 30. As further apparent, in this setting of the first railing rod 22.1 of the first railing device 21.1 the rear recess boundary wall part 81 of the suspension hook 50, which bounds the rosette wall part receiving space 80, is supported by its contact support surface 78.2 on the lower edge or lower apertured disc edge 39.2 of the first rosette wall part 33.1 of the first rosette 30. In this mounting phase a second railing rod mounting intermediate setting 48 is reached.

Illustrated in Figure 8.7 is a succeeding eighth mounting phase which is reached when the first railing device 21.1 is pivoted further upwardly by its second railing end 40.2 relative to the first scaffolding post 23.1 by lifting the second scaffolding post 23.2 (not shown here), wherein here by way of example a larger angle 98.2 of inclination of approximately 55 degrees relative to the horizontal is reached. In comprehensive tests it has proved that the problem of formation of pressure forces and the resulting risk of lifting-off of the suspension hook 50 by its lower, free rear-engaging hook end 70 can significantly increase in the case of angles of inclination greater than 45 degrees relative to the horizontal. If thus the second scaffolding post 23.2 is further lifted so that the first railing rod 22.1 is no longer pivoted upwardly relative to the first scaffolding post 23.1, such that the angle of inclination of the first railing rod longitudinal axis 42.1 relative to the horizontal is increased to more than 45 degrees, the risk of formation of pressure forces by which the first scaffolding rod 22.1 of the first railing device 21.1 is loaded further in the direction of its railing rod longitudinal axis 42.1

19923022_1 (GHMatters) P121881.AU increases. As shown in the example according to Figure 8.6, these pressure forces can be of such height that the forwardly rounded hook nose 67, which is still supported on the inner contour 29 of the first passage opening 31.1, of the suspension hook 50 is there lifted further upwardly 75 relative to the rosette 30. As a result, the free rear-engaging hook end 70 of the suspension hook 50 of the railing rod 41.1 can be raised to such a extent that it is only just still present in the first passage opening 31.1 of the first apertured disc 30, thus just not lifted out yet.

According to the invention the lifting-out of the free rear-engaging hook end 70 and thus the suspension hook 50 of the first railing rod 22.1 and consequently the unilateral lifting-out of the first railing device 21.1 is prevented in that the first railing rod end 41.1 of the first railing rod 22.1 is formed with the rear-engaging element 83 which bounds the rosette wall part receiving space 80 of the recess 73 and partly engages over this and which is opposite the first hook nose 67 of the first suspension hook 50 and has a free rear-engaging element end 84, which extends forwardly in the direction of the free rear-engaging hook end 70 of the hook nose 67 of the suspension hook 50 and which also bounds the rosette wall receiving space 80 of the recess 73 and partly engages over this.

As shown in Figure 8.7, by virtue of the upward pivotation of the first railing rod 22.1 of the first railing device 22.1 by means of the second scaffolding post 23.2 (not shown here) the rear-engaging element 83 of the suspension hook 50 comes into engagement with the lower outer edge 39.2 of the first rosette wall part 33.1 of the first rosette 30 and engages behind the first rosette wall part 33.1, which is present to a large part in the rosette wall receiving space 80, on its lower side with its free rear-engaging hook end 80. As a result, lifting-out of the free rear-engaging hook end 70 of the suspension hook 50 of the first railing rod end 41.1 of the first railing rod 22.1 of the first railing device 21.1 and thus unilateral lifting of the railing device 21.1 out of the first passage opening 31.1 of the first rosette 30 are effectively prevented.

A succeeding ninth mounting phase is illustrated in Figure 8.8, in which the first railing rod 22.1 of the first railing device 21.1 was with the help of the second scaffolding post 23.2 (not shown here) further pivoted upwardly relative to the first scaffolding post 23.1 and in which the second scaffolding post 23.2 was placed on a lower scaffolding post 23.3 (see Figures 1 and 2 each on the outside left), which is also not shown in this figure, wherein now the first railing device 21.1 has been transferred by its first railing rod 22.1 as an advance mounted or

19923022_1 (GHMatters) P121881.AU advance railing into its horizontal installed setting 71.

19923022_1 (GHMatters) P121881.AU

REFERENCE NUMERAL LIST

20 facade scaffolding 21 railing device 21.1 (first) railing device 21.1.1 (first) (first) railing device 21.1.2 (second) (first) railing device 21.2 (second) railing device 22.1 (first) railing rod of 21.1 22.1.1 (first) (first) railing rod of 21.1.1 22.1.2 (second) (first) railing rod of 21.1.2 22.2 (second) railing rod of 21.2 23 scaffolding post / vertical post / modular scaffolding post 23.1 (long) (first) scaffolding post / modular scaffolding post 23.2 (long) (second) scaffolding post / modular scaffolding post 23.3 (short) (third) scaffolding post / modular scaffolding post 24 scaffolding post longitudinal axis of 23 24.1 scaffolding post longitudinal axis of 23.1 24.2 scaffolding post longitudinal axis of 23.2 24.3 scaffolding post longitudinal axis of 23.3 25 tube connector 26 (effective) scaffolding post length of 23 26.1 (effective) scaffolding post length of 23.1 26.2 (effective) scaffolding post length of 23.2 26.3 (effective) scaffolding post length of 23.3 27 longitudinal spacing (30-30) 28.1 (front) (first) longitudinal side of 20 29 inner contour of30, 31.1 30 rosette / apertured disc 30.1 (first) rosette / apertured disc 30.2 (second) rosette / apertured disc 30.3 (third) rosette / apertured disc 30.4 (fourth) rosette / apertured disc 31 passage opening 31.1 (small) passage opening

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31.2 (large) passage opening 32 circumferential angle 33.1 (first) (outer) rosette wall part 33.2 (first) (inner) rosette wall part 34 separating web 35 disc thickness of 30 36.1 (first) (upper) side surface of 30 36.2 (second) (lower) side surface of 30 37 outer end edge of 30 38 outer end surface of 30 39.1 (first) (upper) apertured disc edge / upper edge outer edge of 30, 33.1 39.2 (second) (lower) apertured disc edge / lower edge / outer edge of 30, 33.1 39.3 (upper) apertured disc edge / upper edge / inner edge of 30, 33.1 40.1 (first) railing end of 21.1.1 40.2 (second) railing end of 21.1.2 41.1 (first) railing rod end of 22.1 41.2 (second) railing rod end of 22.1 42.1 (first) railing rod longitudinal axis of 22.1 42.2 (second) railing rod longitudinal axis of 22.2 43.1 (first) railing end of 22.2 43.2 (second) railing end of 22.2 44.1 (first) tube 44.2 (second)tube 45.1.1 (first) tube end of 44.1 45.1.2 (second) tube end of 44.1 45.2.1 (first) tube end of 44.2 45.2.2 (second) tube end of 44.2 46.1.1 (first) receiving slot of 44.1 46.2.1 (first) receiving slot of 44.2 46.2.2 (second) receiving slot of 44.2 47 (first) railing rod mounting intermediate setting 48 (second) railing rod mounting intermediate setting 50 suspension hook 51 hook plate 52 connecting head

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53 securing wedge 54.1 (upper)head part of52 54.2 (lower) head part of 52 55 connecting part 56 plug-on slot / slot 57 U-bracket 58 joint 59 cylinder screw 60 nut 61 pivot axis /joint axis of 58 62 slot centre plane of 56 63 slot centre plane of 46.1.1 64 longitudinal centre plane of 50, 51 65.1 first side surface of 50, 51 65.2 second side surface of 50, 51 66 end surface of 50, 51 67 hook nose of50 68 (upper) hook wall part 69 (front) (rounded) outer contour / end edge of 67 70 (free) rear-engaging hook end 71 horizontal installation setting of 22.1 71.1 horizontal installation setting of 22.1.1 71.2 horizontal installation setting of 22.1.2 72 lower side of 22.1 73 (first) recess 74 downward (arrow) 75 upward (arrow) 76 forward (arrow) 77 rearward (arrow) 78.1 contact support surface of 68 78.2 contact support surface of 81 78.3 (upper) (inclined) contact support surface of 83 78.4 (lower) (inclined) contact support surface of 83 78.5 (inclined) contact support surface of 89 78.6 (common) contact support surface of 83 and 89 abutment surface

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78.7 (rear) contact support surface of 67 79 railing rod end support part 80 rosette wall part receiving space 81 recess boundary wall part of 50 82 (first) angle 83 rear-engaging element / rear-engaging wall part 84 (free) rear-engaging element end 85 bend / transverse edge 86 (second) angle 87 (third) angle 88 (fourth) angle 89 (lower) support wall part 90.1 first railing rod end of 22.2 90.2 second railing rod end of 22.2 91.1 tube longitudinal axis of 44.1 91.2 tube longitudinal axis of 44.2 92 longitudinal centre plane 92.1 longitudinal centre plane 92.2 longitudinal centre plane 93 rod centre plane / longitudinal centre plane of symmetry 94 transverse centre plane / transverse centre plane of symmetry 95.1 first scaffolding bay 95.2 second scaffolding bay 96 arrow (see Figure 8.4) 97 arrow (see Figure 8.5) 89.1 angle of inclination (45 degrees) 89.2 angle of inclination (55 degrees) 99 spacing (recess width)

19923022_1 (GHMatters) P121881.AU

Claims

PATENT CLAIMS

1. Arrangement of scaffolding components for a facade scaffolding (20), comprising a first scaffolding post (23.1) of metal, a second scaffolding post (23.2) of metal and a railing device (21.1, 21.2) detachably connected not only with the first scaffolding post (23.1), but also with the second scaffolding post (23.2), with the following features:

a) each scaffolding post (23.1, 23.2) extends rectilinearly in the direction of its scaffolding post longitudinal axis (24.1, 24.2) from its lower post end to its upper post end over an effective post length (26.1, 26.2),

b) each scaffolding post (23.1, 23.2) is so arranged or erected in a use or mounting setting that its scaffolding post longitudinal axis (24.1, 24.2) extends vertically,

c) a rosette (30) is permanently secured to each scaffolding post (23.1, 23.2) at a rosette spacing from the respective upper post end,

d) the rosette (30) has a plurality of passage openings (31.1, 31.2) which are arranged at a mutual spacing in circumferential direction and which as considered in a direction transverse or perpendicular to the scaffolding post longitudinal axis (24.1, 24.2) away therefrom are outwardly bounded by rosette wall parts (33.1),

e) the railing device (21.1, 21.2) is detachably connected with the rosette (30) of the first scaffolding post (22.1) and with the rosette (30) of the second scaffolding post (23.2),

f) the railing device (21.1, 21.2) comprises a railing rod (22.1, 22.2) of metal which extends in the direction of its railing rod longitudinal axis (42.1, 42.2),

g) the railing rod (22.1, 22.2) has a first railing rod end (41.1, 90.1) and a second railing rod end (41.2, 90.2) which extend in opposite directions away from one another,

h) the railing rod (22.1, 22.2) is supported by way of a railing rod end support part (79) of its first railing rod end (41.1, 90.1) on a rosette wall part (33.1), which bounds a passage opening (31.1) of the passage openings (31.1, 31.2) of the rosette (30), of the rosette wall parts (33.1),

19923022_1 (GHMatters) P121881.AU i) the railing rod (22.1, 22.2) supported by way of the railing rod end support part (79) of the first railing rod end (41.1, 90.1) on the rosette wall part (33.1) of the rosette (30) of the first scaffolding post (23.1) is pivotable with the help of the second scaffolding post (23.2) upwardly relative to the first scaffolding post (23.1) as an advance railing from a first railing rod mounting intermediate setting (47), in which the railing rod (22.1, 22.2) extends at an inclination to the first scaffolding post (23.1), into a horizontal installation setting (71.1, 71.2), in which the railing rod (22.1, 22.2) extends horizontally, j) the first railing rod end (41.1, 90.1) of the railing rod (22.1, 22.2) is arranged at the railing rod (22.1, 22.2) at the front with respect to the rosette (30) of the first scaffolding post (21.1) and the second railing rod end (41.2, 90.2) is arranged at the railing rod (22.1, 22.2) at the back with respect to the rosette (30.1.1) of the first scaffolding post (21.1), k) the first railing rod end (41.1, 90.1) as considered in the first railing rod mounting intermediate setting (47) of the railing rod (22.1, 22.2) and also in the horizontal installation setting (71.1, 71.2) of the railing rod (22.1, 22.2) has at the lower side (72) a recess (73) which is open with respect to side surfaces (65.1, 65.2) - which extend away from one another - of the first railing rod end (41.1, 90.1) and downwardly (74) and which is bounded by contact support surfaces (78.1, 78.2, 78.3, 78.4, 78.5, 78.6, 78.7) of the railing rod end support part (79) of the first railing rod end (41.1, 90.1),

I) the first railing rod end (41.1, 90.1) is formed by a suspension hook (50) bounding the recess (73) and having a hook nose (67), which forwardly (76) bounds the first railing rod end (41.1, 90.1) and extends away from a hook wall part (68) - which is upper as considered in the horizontal installation setting (71.1, 71.2) and in the first railing rod mounting intermediate setting (47) - in downward direction (74) as considered in the horizontal installation setting (71.1, 71.2) and in the first railing rod mounting intermediate setting (47) and which has a free rear-engaging hook end (70) extending rearwardly (77) with respect to the second railing rod end (41.2, 90.2) and partly engaging over a rosette wall part receiving space (80), in which the rosette wall part (33.1) is at least partly received, of the recess (73),

19923022_1 (GHMatters) P121881.AU m) the hook nose (67) of the suspension hook (50) of the first railing rod end (41.1, 90.1) engages at least partly in the passage opening (31.1) of the rosette (30), n) the first railing rod end (41.1, 90.1) is supported by way of at least one contact support surface (78.1, 78.2, 78.3, 78.4, 78.5, 78.6, 78.7) of the contact support surfaces (78.1, 78.2, 78.3, 78.4, 78.5, 78.6, 78.7) on the rosette wall part (33.1) of the rosette (30) of the first scaffolding post (23.1), o) in the horizontal installation setting (71.1, 71.2) of the railing rod (22.1, 22.2) the free rear-engaging hook end (70) of the hook nose (67) of the suspension hook (50) engages behind the rosette wall part (33.1) of the rosette (30), characterised by the following features: q) the first railing rod end (41.1, 90.1) of the railing rod (22.1, 22.2) is formed by a rear engaging element (83) which bounds the recess (73) and is opposite the first hook nose (67) of the suspension hook (50) and which has a free rear-engaging element end (84), which extends forwardly (76) in direction towards the free rear-engaging hook end (70) of the hook nose (67) of the suspension hook (50) and which partly engages over the rosette wall part receiving space (80) of the recess (73).

2. Arrangement according to claim 1, characterised in that the rear-engaging element (83) is bounded by a contact support surface (78.3) of the contact support surfaces (78.1, 78.2, 78.3, 78.4, 78.5, 78.6, 78.7), which bounds the rosette wall part receiving space (80) of the recess (73) and is arranged at an inclination to the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) of the railing device (21.1, 21.2) and which extends rearwardly from the free rear-engaging element end (84).

3. Arrangement according to claim 2, characterised in that the contact support surface (78.3) of the rear-engaging element (83) includes with the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) of the railing device (21.1, 21.2) a second angle (86) which is greater than 50 degrees or greater than 60 degrees.

4. Arrangement according to any one of claims 1 to 3, characterised in that the suspension hook (50) has a contact support surface (78.2) of the contact support surfaces

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(78.1, 78.2, 78.3, 78.4, 78.5, 78.6, 78.7) of a recess boundary wall part (81) which rearwardly (77) bounds the rosette wall part receiving space (80).

5. Arrangement according to any one of claims 1 to 3, characterised in that the suspension hook (50) and the passage opening (31.1) of the rosette (30) as well as wall parts bounding the passage opening (31.1) are formed to be matched to one another in such a way that

the railing rod (22.1, 22.2) of the railing device (21.1, 21.2) is transferrable or transferred from its first railing rod mounting intermediate setting (47), from which the railing rod (22.1, 22.2) is pivotable as an advance railing into its horizontal installation setting (71.1, 71.2) with the help of the second scaffolding post (23.2) and in which the hook nose (67) of the suspension hook (50) at least partly engages in the passage (31.1) of the rosette (30),

when, during pivotation of the railing rod (22.1, 22.2) of the railing device (21.1, 21.2) relative to the first scaffolding post (23.1) with the help of the second scaffolding post (23.2) for the purpose of mounting of the railing device (21.1, 21.2) as an advance railing, mounting pressure forces arise in the direction of the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) or parallel to the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) and in the direction of the first railing rod end (41.1, 90.1) of the railing rod (22.1, 22.2) and can lead to movement forwardly (76) of the first railing rod end (41.1, 90.1) of the railing rod (22.1, 22.2) in the direction of its railing rod longitudinal axis (42.1, 42.2),

into a second railing rod mounting intermediate setting (48)

in which the railing rod (22.1, 22.2) further extends at an inclination to the scaffolding post longitudinal axis (24.1) of the first scaffolding post (23.1)

and the hook nose (67) of the suspension hook (59) further engages at least partly in the passage (31.1) of the first rosette (30)

and in which due to the effective mounting pressure forces the hook nose (67) of the suspension hook (50) bears by its front hook nose outer contour (69) either against an opposite inner contour (29) of the passage opening (31.1) or against an opposite outer contour of the first scaffolding post

19923022_1 (GHMatters) P121881.AU and the contact support surface (78.2) of the recess boundary wall part (81) bears against a lower side or against a lower outer edge (39.2) of the rosette wall part (33.1) of the rosette (30) and in which the rear-engaging element (83) engages by its rear-engaging element end (84) behind the rosette wall part (33.1).

6. Arrangement according to claim 4 or 5, characterised in that the contact support surface (78.2) of the recess boundary wall part (81) includes with the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) of the railing device (21.1, 21.2) a first angle (82) of 90 degrees.

7. Arrangement according to one of claims 2 and 3 and according to any one of claims 4 to 6, characterised in that the contact support surface (78.3) of the rear-engaging element (83) and the contact support surface (78.2) of the recess boundary wall part (81) include a third angle (87) smaller than 170 degrees or smaller than 160 degrees.

8. Arrangement according to any one of claims 1 to 7, characterised in that the rear engaging element (83) is bounded by a contact support surface (78.4), which is arranged at an inclination to the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) of the railing device (21.1, 21.2 and which extends rearwardly (77) from the free rear-engaging element end (84, of the contact support surfaces (78.1, 78.2, 78.3, 78.4, 78.5, 78.6, 78.7).

9. Arrangement according to claim 8, characterised in that the contact support surface (78.4) of the rear-engaging element (83) includes with the railing rod longitudinal axis (42.1, 42.2) of the railing rod (22.1, 22.2) of the railing device (21.1, 21.2) a fourth angle (88) of 45 degrees.

10. Arrangement according to any one of claims 1 to 9, characterised in that the free rear-engaging element end (84) of the rear-engaging element (83) as considered in the direction of the railing rod longitudinal axis (42.1, 42.2) has a spacing (99), which corresponds with a smallest recess width of the recess (73), from the free rear-engaging hook end (70) of the hook nose (67) of the suspension hook (50).

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