EP3839172B1 - Railing post for a front railing, front railing for temporarily preventing falls from a new scaffolding level, scaffold for building, repair and/or assembly work and method for constructing a scaffold - Google Patents

Description

The present invention relates to a railing post for a railing in advance, a railing in advance for temporary fall protection of a scaffolding level to be newly constructed, scaffolding for construction, repair and/or assembly work, and a method for erecting a scaffolding.

In the scaffolding systems known from the prior art, the individual scaffolding levels are assembled from system components. The assembly process takes place from bottom to top. After the vertical posts or vertical frames, the decking ledgers, the decking, the railing posts and, if applicable, the diagonals of a floor have been installed, the decking for the floor to be installed above can first be installed.

Advance railings are used to provide the erector of a scaffolding with certain safety elements when climbing up to the top, newly created scaffolding level, which offer him a hold. After the safety railing has been erected, the leading railings are released again and used to secure a new section. Such devices are also called leading fuses.

There are scaffolding systems known in which frames are used, which replace the railings and diagonals. After the assembly of such a frame, the upper horizontal bars already form the railing for the scaffolding level that is still to be assembled above. The frame construction itself is part of the scaffolding. Another embodiment is known, in which also a frame is used, the upper horizontal ledger of which forms the leading railing. During assembly, this frame is hooked into two already installed railings and must then be moved floor by floor in order to ensure that the railings run ahead. Both frame constructions are relatively bulky, heavy and therefore complex to assemble. In any case, several fitters must be deployed during assembly or disassembly.

Next are from the DE 102 08 191 A1 Telescopic railings with a first rail designed as a hollow profile and a second rail that can be pushed in or out of this first rail are known, through which a leading railing can be created by a single fitter; However, this structural design has the disadvantage that the rail elements sliding into one another can easily jam, which ultimately leads to the said railing rails becoming inoperable. EP3012385 and EP0655538 disclose other known railings.

Proceeding from the prior art mentioned, the object of the present invention is to remedy such and other disadvantages of the prior art and in particular to specify a device of the type mentioned at the outset that enables the assembly of a leading railing from an existing scaffolding level in a simple manner for a scaffolding level to be created above it, which significantly reduces the assembly effort for providing the leading railing, which can be produced economically and which can be assembled and moved by just one fitter.

The object is achieved in particular by a railing according to claim 1, a leading railing according to claim 8, a framework according to claim 11 and a method according to the independent Claim 12 solved. Advantageous refinements and developments are the subject matter of the dependent claims. In particular, the task is solved by a railing for a leading railing. The railing rail comprises at least a first and a second connection means for the respective attachment to a connection element of a railing post. The railing rail is tubular, in particular designed as a hollow tube with a longitudinal axis and extends along this longitudinal axis. The railing comprises a first and a second section, the first section comprising the first connection means and the second section comprising the second connection means. The second section of the railing comprises an elongated hole extending in the direction of the longitudinal axis, in which a connecting means is arranged such that it can be moved, in particular shifted, along the longitudinal axis.

Such a banister can be easily and quickly attached to and detached from a banister post and in particular allows the banister posts connected to the banister post to be moved one after the other to vertically adjacent scaffold levels of a scaffold without the banister having to be detached from the banister post.

The connecting means of the railing rail are designed in such a way that they can each be brought into an operative connection with a connecting element of a railing post and enable a secure connection between the railing rail and the railing post. This provides a safe advance railing.

The railing rail has an essentially round cross-sectional profile, in particular a tubular cross-sectional profile, on. As a result, the railing has great torsional and flexural rigidity and is easy to manufacture. However, other cross-sectional profiles such as rectangular, square, I, H or U profiles can also be used. In the fastening position, the longitudinal axis of the railing is essentially parallel to a horizontal scaffolding level formed by a scaffolding deck.

The first and second sections of the railing may be made of metals such as mild steel and/or aluminum and/or other suitable materials that have sufficient strength to provide a secure leading railing and still allow for a sufficiently inexpensive manufacture of the railing.

The second section of the railing comprises an elongated hole extending in the direction of the longitudinal axis.

In the event that only one section of the railing rail has a slot, in connection with the present invention that one of the two sections of the railing rail which includes the slot is referred to as the second section. In this context, an elongated hole is understood to be an opening, in particular a continuous opening, the mouth of the opening having a geometry that deviates from the circular shape. In particular, the mouth of the opening has the shape of a rectangle extending in the longitudinal direction of the railing post, in which optionally one or both narrow sides are replaced by curves.

The expansion of the elongated hole in the direction of the longitudinal axis of the railing rail determines the maximum displacement of the connecting means arranged in the elongated hole along the longitudinal axis of the railing rail.

The clear internal distance between the two longitudinal sides of the slot is to be selected in comparison to the outer diameter of the part of the connecting means guided in the slot so that the movable connecting means can be moved smoothly along the longitudinal axis of the railing.

According to the invention, the railing comprises exactly one slot extending in the direction of the longitudinal axis. In this case, the first connecting means is designed to be immovable, i.e. it is in a fixed spatial relationship to the railing. The second connecting means is arranged in the elongated hole so that it can be moved, in particular shifted, along the longitudinal axis.

Such a railing rail with exactly one movable connection means has a high torsional and bending stiffness and can also be produced even more simply and cost-effectively in comparison to the designs which include two or more movable connection means.

The immobile first connection means is, for example, an opening in the railing, in particular a continuous opening transverse to the longitudinal axis of the railing. Preferably, the mouth of the opening has a circular geometry.

Such an immovable connection means can be produced easily and inexpensively, for example by milling, drilling or punching the railing.

The second connection means, which is arranged in the elongated hole so that it can be moved, in particular shifted, along the longitudinal axis, the railing posts of the leading railing connected to the railing rail can be moved one after the other and by a single person to a vertically adjacent scaffolding level of a scaffolding, without the railing rail having to be detached from the railing post is required. This leads to increased safety for the fitter while at the same time reducing the amount of work involved.

Preferably, the opposite ends of the railing rail are formed as flat areas. In this case, the first connection means and the second connection means are each arranged in these flat areas.

Starting from tubular bodies, such flat areas can be provided easily and inexpensively by flattening the tube ends. The flat areas allow the longitudinal axis of the railing rail to be moved closer in the direction of the plane spanned by the railing posts, which optimizes the absorption of forces and increases safety for the user. In addition, the flat areas allow the railing rail to be easily equipped with the connection means.

Preferably, the two flat areas of the railing rail define two planes which are essentially parallel planes that do not lie in one plane.

This makes it easier to connect the connecting means of the railing spar to the connecting elements of the railing posts.

According to the invention, the connection means that can be moved along the longitudinal axis of the slot is designed as a body with a continuous opening and an outer groove, which is guided between the inner sides of the slot.

The inner sides of an elongated hole serve as guide rails, which are at least partially accommodated by the outer groove of the connecting means arranged movably in the elongated hole. As a result, the movable connecting means can be moved safely along the extent of the elongated hole in the longitudinal direction of the railing, with movements of the connecting means transverse to the longitudinal axis of the railing being limited by the outer groove. The movable connecting means has a slight amount of play with respect to the width of the elongated hole, as a result of which the movable connecting means can be guided easily along the elongated hole. The overlapping area of the outer groove and the guide rails must be selected in such a way that the connection means cannot become detached from the guide rails under the intended operating conditions of the guardrail.

The movable connecting means are particularly preferably designed as guide rollers with a flange on both sides or a peripheral outer groove. Such guide rollers are readily available in various designs or can be easily manufactured.

The connection means, which can be moved along the longitudinal axis of the elongated hole, are preferably designed as a body with a continuous opening, in particular as a disk with a central hole. In this case, the inner sides of the elongated hole have a recess for at least partially accommodating and guiding the connecting means along the longitudinal axis, the recess being in particular U-shaped or V-shaped or part-circular or semi-circular.

The recess on the inside of the slot allows the movable connection means to be moved safely along the extension of the slot in the longitudinal direction of the railing, with movements of the connection means transverse to the longitudinal axis of the railing being limited by the recess.

According to the invention, the first section and the second section of the railing rail are connected to one another by connecting means. In particular, the connecting means can be screw connections and/or welded connections and/or glued connections.

As a result, both sections can be manufactured independently of one another and from different materials, which increases the flexibility of the manufacturing process of the railing rail and enables a material selection tailored to the respective requirements of both sections.

The length of the at least one elongated hole in the railing is to be measured in such a way that the railing can be used in different scaffolding. The slot extending in the direction of the longitudinal axis of the railing rail preferably has a length of between 200 and 1200 millimeters.

This range of values allows the guardrail to be used in a guardrail in advance for scaffolding with normal scaffolding bay lengths and normal distances between adjacent horizontal scaffolding levels without having to loosen the guardrail when the two railing posts connected to the railing post are moved one after the other to a vertically adjacent scaffolding level above is.

The first and the second section of the railing rail can be of different lengths. As a result, railings can be provided for use in scaffolding with different scaffold bay lengths and/or different distances between adjacent horizontal planes. However, both sections can also be of the same length. Depending on the materials used, a greater balance could thus be achieved. Preferably, the aspect ratio of the first section to the second section is at least 1.5, preferably between 1.9 and 4.0.

As a result, the railing has great torsional and flexural rigidity for safe use in the leading railing. This range of values also allows the guardrail to be used in a guardrail in advance for scaffolding with standard scaffolding bay lengths and standard spacing between adjacent horizontal scaffolding levels.

The task is also solved by an advance railing for temporary fall protection of a scaffolding level to be newly created. The leading railing comprises at least one railing rail as previously described and two railing posts. The railing posts are detachably attachable to scaffolding. The first connection means and the second connection means of the railing post are each detachably connected to a railing post, in particular a connecting element of a railing post.

Such an advanced railing is easy to attach and detach.

The railing rail can have flattened ends, in particular with at least one recess, preferably at least one continuous one Have opening for connection with the connecting elements of the railing posts. As a result, an easy-to-manufacture attachment is possible. The at least one movable connection means of the railing post according to the invention can in particular be attached to the railing post in such a way that the railing posts are movable relative to one another, in particular their horizontal distance from one another is variable. This allows easy handling of the leading railing, in particular a successive displacement of the railing posts connected to the railing post to vertically adjoining scaffold levels of a scaffold without the need to detach the railing post from the railing post.

When assembled, the railing posts preferably each comprise an upper section and a lower section. At least one connection element for connection to the connection means of the railing rail is arranged in the area of the upper section. In the area of the upper section, there is preferably exactly one connection element for connection to the connection means of the railing rail. A first fastening element for connecting the railing post to a vertical frame of a scaffolding is arranged in the region of the lower section. A second fastening element for connection to a vertical frame of a scaffolding is arranged between the upper and the lower section. The first fastening element has a support surface for support on the vertical frame and an anti-tilt device with lateral guidance to prevent tipping movements, in particular to prevent tipping movements and at least partial support of the lateral guidance on an intermediate beam fastened between two vertical posts. The second fastening element is designed in such a way that it can engage around a vertical post of a vertical frame and into a stiffening element arranged between the vertical post and the decking bar can intervene. The at least one connection element and the first and the second fastening element are preferably arranged on the same side of the respective railing post.

The arrangement of at least one connection element in the region of the upper section of the railing post allows the railing post to be fastened as a safety device at a height suitable for the scaffolding user, for example as a handrail.

By providing exactly one connection element, the railing post can be produced particularly easily and inexpensively.

The support surface of the first fastening element enables forces to be optimally transferred to the vertical frame and prevents the railing post or the leading railing from tipping away from the scaffolding when assembled. The anti-tilt protection of the first fastening element prevents tilting movements of the railing post or the leading railing in the assembled state towards the scaffolding. The lateral guidance of the first fastening element on the one hand facilitates the alignment of the railing post on the vertical frame and on the other hand prevents tilting movements of the railing post or the leading railing in the assembled state in the direction of the longitudinal bars of the scaffolding. In a particularly preferred embodiment, the first fastening element is designed in such a way that it rests at least partially on an intermediate beam fastened between two vertical posts. As a result, vertical forces acting on the railing post can be distributed over several points on the vertical frame.

The second fastening element makes it possible to grip a vertical support of the vertical frame on which the railing post is attached, whereby tilting movements of the railing post or the leading railing in the assembled state towards the scaffolding, away from the scaffolding, and in a transverse direction are prevented. The engagement of the second fastening element in a stiffening element arranged between the vertical standard and decking ledger transmits the forces acting vertically on the railing post in the assembled state to the vertical frame and at the same time tilting movements in the remaining direction, ie in the direction opposite to the transverse direction mentioned, are prevented. The configuration of the second fastening element described prevents tilting movements of the railing post or of a leading railing constructed therewith in all directions. At the same time, vertical forces acting in the direction of gravity are transferred to the scaffolding, which increases the safety of the guardrail in front.

The arrangement of the connecting elements and fastening elements on the same side of the railing post makes it particularly easy to assemble the leading railing.

Next, the task is solved by a framework for construction, repair and / or assembly work. The scaffolding comprises at least two vertical frames, at least one decking and at least one leading railing as previously described.

When assembled, the longitudinal axes of the railing posts of the leading railing are arranged essentially parallel to the vertical posts of the vertical frames. Between these axes and the longitudinal axis of the railing spar of the leading railing, depending on the fastening position of the connected railing posts, the distance between two adjacent horizontal Scaffold levels and the scaffold bay length of the cutting angles are between 0 and 90°.

Such scaffolding can be erected quickly and safely.

The framework can be made of metals such as mild steel, aluminum and/or other suitable materials. Metals such as mild steel are cheap and have sufficient stability. The vertical frames can include foot elements for resting on the floor, in particular one foot element for each vertical post of a vertical frame. This makes the framework stable. The foot elements can be adjustable in height. In this way, unevenness in the subsurface can be easily compensated. The framework may comprise one or more levels of scaffolding. This makes work on the house easy and safe. Decking may include wood planks, metal or plastic mesh, mats, or other suitable materials. The framework may include at least one ladder. This makes it easy to switch from one floor to the other. The ladder can be folded up or arranged immovably on the scaffold. Folding ladders take up less space. Fixed ladders require less maintenance. The scaffolding preferably comprises at least one horizontal intermediate beam between adjacent vertical frames, as a result of which the scaffolding can be erected in a stable manner.

Preferably, the vertical frames each comprise stiffening elements between the vertical post and the decking ledger, at least on the side facing the leading railing. Such stiffening elements can in particular be gusset plates and/or struts. The railing posts are arranged or can be arranged on these stiffening elements.

This increases the stability of the scaffolding and simply attaches the leading railing to a stiffening element.

1. A Aufbauen einer ersten Gerüstsektion auf einer ersten Ebene, wobei die erste Gerüstsektion zwei Vertikalrahmen umfasst, welche über einen Belag miteinander verbunden sind;
2. B Befestigen eines vorlaufenden Geländers wie vorhergehend beschrieben. Das vorlaufende Geländer umfasst dabei einen ersten Geländerpfosten, einen zweiten Geländerpfosten und einen Geländerholm, wobei die beiden Geländerpfosten jeweils an einer ersten Befestigungsposition der ersten Gerüstsektion angebracht sind und über den Geländerholm miteinander verbunden sind;
3. C Aufbauen einer zweiten Gerüstsektion auf einer zweiten Ebene, wobei die zweite Gerüstsektion zwei Vertikalrahmen umfasst, welche über einen Belag miteinander verbunden sind und oben in die Vertikalrahmen der ersten Gerüstsektion eingreifen;
4. D Lösen des ersten oder zweiten Geländerpfostens und Befestigen desselben an einer zu seiner ersten Befestigungsposition korrespondierenden zweiten Befestigungsposition der zweiten Gerüstsektion. Der Abstand zwischen der ersten und der zweiten Befestigungsposition entspricht dabei im Wesentlichen der Länge der verwendeten Vertikalrahmen;
5. E Lösen des jeweils anderen Geländerpfostens und Befestigen des gelösten Geländerpfostens an einer zu seiner ersten Befestigungsposition korrespondierenden zweiten Befestigungsposition der zweiten Gerüstsektion, wobei der Abstand zwischen der ersten und der zweiten Befestigungsposition im Wesentlichen der Länge der verwendeten Vertikalrahmen entspricht;

The object is further achieved by a method for constructing a framework as previously described. The procedure includes the steps:

1. A erecting a first scaffolding section on a first level, the first scaffolding section comprising two vertical frames which are connected to one another via a deck;
2. B Attach a guardrail in advance as previously described. The leading railing comprises a first railing post, a second railing post and a railing rail, the two railing posts each being attached to a first fastening position of the first scaffolding section and being connected to one another via the railing rail;
3. C erecting a second scaffolding section on a second level, the second scaffolding section comprising two vertical frames which are connected to one another via a deck and engage in the vertical frames of the first scaffolding section at the top;
4. D Detaching the first or second railing post and fastening it to a second fastening position of the second scaffold section corresponding to its first fastening position. The distance between the first and the second fastening position essentially corresponds to the length of the vertical frame used;
5. E loosening the respective other railing post and fixing the loosened railing post at a second fixing position of the second scaffolding section corresponding to its first fixing position, the distance between the first and the second fixing position being substantially corresponds to the length of the vertical frames used;

In the method described above, the handrail post can be moved in method step E by moving the connecting means of the handrail in the elongated hole.

Scaffolding can be erected easily, quickly and safely with this method. When moving, the position of the railing posts shifts in relation to one another, but they remain connected to one another via the railing rail.

Figur 1

Ein Geländerholm in perspektivischer Ansicht;

Figur 2

Der Geländerholm in einer Seitenansicht;

Figur 3

Der Geländerholm in einer Draufsicht ;

Figur 4

Ein bewegliches Anschlussmittel in einer Draufsicht;

Figur 5

Das bewegliche Anschlussmittel in perspektivischen Ansicht;

Figur 6

Das bewegliche Anschlussmittel in einer Seitenansicht;

Figur 7

Ein Geländerpfosten in perspektivischer Ansicht;

Figur 8

Der Geländerpfosten in einer Seitenansicht;

Figur 9

Der Geländerpfosten in einer Draufsicht;

Figur 10:

Eine perspektivische Ansicht eines oberen Abschnitts des Geländerpfostens mit angeschlossenem Geländerholm;

Figur 11:

Eine perspektivische Ansicht des ersten Befestigungselements im unteren Abschnitt des Geländerpfostens;

Figur 12:

Eine perspektivische Ansicht des zweiten Befestigungselements im unteren Abschnitt des Geländerpfostens;

Figur 13:

Ein vorlaufendes Geländer;

Figur 14:

Ein Gerüst mit einem vorlaufenden Geländer.

In the following, the invention is illustrated by way of example using figures. In this case, the same reference symbols always designate components of the same type of embodiment, unless this is explicitly stated otherwise. Here show:

figure 1

A perspective view of a railing;

figure 2

The banister in a side view;

figure 3

The banister in a plan view;

figure 4

A movable connection means in a plan view;

figure 5

The movable connection means in perspective view;

figure 6

The movable connecting means in a side view;

figure 7

A perspective view of a railing post;

figure 8

The railing post in a side view;

figure 9

The railing post in a plan view;

Figure 10:

A perspective view of an upper portion of the banister post with the banister rail attached;

Figure 11:

A perspective view of the first fastener in the lower portion of the baluster;

Figure 12:

A perspective view of the second fastener in the lower portion of the baluster;

Figure 13:

A leading railing;

Figure 14:

A scaffold with a leading railing.

figure 1 shows a railing rail 1 comprising a railing rail body 11 with a continuous round tube profile, which is extended along the longitudinal axis Q of the railing rail 1 . The railing 1 has a first section 18 and a second section 19 which here consist of two separate parts which are connected to one another by the connecting means 14 . In this exemplary embodiment, the connecting means 14 are welded screw connections. The railing 1 further includes the flat areas 12 and 15, connecting means 13 and 16, connecting means 14 and a slot 17, which is designed here as a through opening, in the area of the second section 19. The connecting means 13 and 16 are each designed as through openings , wherein the first connection means 13 is arranged immovably in the flat area 12 of the railing 1 and the second connection means 16 is movably guided in the slot 17 of the flat area 15.

In the assembled state of the leading railing, the railing post 1 is arranged essentially horizontally (cf. figure 13 and figure 14 ). The railing 1 has a total length of about 2300 mm. The tubular railing body 11, which defines the first section 18, has a round cross-section with an outer diameter of about 40 mm. The flat area 15, which defines the second portion 19, extends over a length of about 780 mm along the longitudinal axis Q of the railing and has a width of about 8 mm. The flat area 15 includes the slot 17, the width of which has an inside diameter of about 27.5 mm and whose length has a clear inside diameter of about 710 mm along the longitudinal axis Q of the railing. The hole diameter of the connecting means 13 and 16 is approximately 25 mm in each case. The movable connecting means 16 has a slight play of about 1.5 mm with respect to the width of the elongated hole 17, as a result of which the movable connecting means 16 can be guided along the elongated hole 17 with ease. The moveable The handrail 1 is made of metal.

The railing spar 1 is used as part of a leading railing 10, with the connecting means 13 and 16 of the railing spar being each attached to a connecting element 3 of a railing post 2 (cf. figure 9 ).

Figure 2 and Figure 3 show the railing 1 (cf. figure 1 ) in a side view or in a top view. It can be seen that the two flat areas 12 and 15 essentially represent planes parallel to one another.

The Figures 4 to 6 show a movable connection means in a plan view, a perspective view and a side view. In this exemplary embodiment, the movable connecting means 16 has an outer groove 161 which is formed by the flanges 163 arranged on both end faces of the hollow cylinder 162 . The diameter of the continuous opening, which corresponds to the inner diameter of the hollow cylinder 162, is selected such that the railing spar 1 can be pushed onto a connecting element 3 of a railing post. In this embodiment, the diameter of the through hole is about 25 mm. The movable connection element 16 is guided in the elongated hole through the outer groove 161 (cf. figure 1 ). The outer diameter of the hollow cylinder is preferably designed to be slightly smaller than the width of the elongated hole in order to to allow easy displacement of the movable connection means 16 in the slot 17. The profile depth of the outer groove 161 is designed in such a way that the connection means 16 cannot be removed from the elongated hole 17 unintentionally. In this exemplary embodiment, the two flanges 163 protrude on both sides by about 0.8 mm beyond the internal distance between the two long sides of the elongated hole 17 .

figure 7 shows a railing post in a perspective view. In this exemplary embodiment, the railing post 2 comprises a railing post body 21, here a continuous round tube, two connecting elements 3 in the upper section 22 of the railing post 2, a first fastening element 4 in the lower section 23 of the railing post 2 and a second fastening element 5, which is located between the upper and the lower section is arranged. The first fastening element 4 has a spacer element 41 , a support surface 42 , an anti-tip device 43 and a lateral guide 44 . The free front end area of the spacer element 41 is designed as a support surface 42 which, when the railing post 2 is in the installed state, is at least partially on the outside of a vertical post 71 (cf. figure 11 ) of the vertical frame 7 (cf. figure 14 ) is present. The lateral guide 44 is designed here as a U-profile unit for receiving a vertical post 71 of a vertical frame 7 . The inside clearance of the lateral guide 44 is only slightly larger than the outer diameter of the vertical post 71. The anti-tilt device 43 is designed here in the form of two parallel spaced tabs that run diagonally downwards when the railing rail is in the assembled state. The second fastening element 5 has a spacer element 51 , a gripping element 52 and an engaging element 53 .

Figure 8 and Figure 9 show the railing post 2 (cf. figure 7 ) in a side view or in a top view. It can be seen that the two connecting elements 3 , the first fastening element 4 and the second fastening element 5 are arranged on the same side of the railing post 2 .

figure 10 shows a perspective view of an upper portion of the banister post with attached banister. A connection can be seen between a connection element 3 of the railing post 2 and an immovable connection means 13 (not provided with a reference number) of the railing post 1.

The connecting element 3 comprises a connecting pin 31 and a tilting element 33. The tilting element 33 is mounted on the connecting pin 31 via a rotary axis 32, which is designed here as a dowel pin. The connecting pin 31 has a receiving device 34 for the tilting element 33, which is designed here as a rectangular through-opening into which the tilting element 33 can be pivoted. If a railing rail 1 is pushed onto the connecting pin 31, the tilting element 33 pivots into the receiving device 34 and then falls back into its original position. In this original position, the tilting element 33 ensures that the railing spar 1 cannot become detached from the connecting pin 31 . So this position is a backup position. To release the connection, the tilting element 33 can be pivoted into the receiving device 34 by hand.

figure 11 shows a perspective view of the first fastening element 4 in the lower section of the railing post. You can see the spacer element 41, the support surface 42, the anti-tilt device 43 and the lateral guide 44. The anti-tilt device 43 is designed here in the form of two parallel, spaced-apart tabs which, when the railing rail is in the installed state, are inclined extend downwards and rest at least partially on a node of intermediate beams 6, which are connected to a vertical post 71. The distance between the longitudinal axis A of the railing post 2 and the longitudinal axis V of the vertical post 71 is approximately 110 mm in this exemplary embodiment. The spacer elements 41 and 51 (cf. figure 12 ) are dimensioned such that the railing post 2 can be connected essentially parallel to the vertical post 71, taking into account the previously described design of the first fastening element 4 and the second fastening element 5 of the railing post 2.

figure 12 shows a perspective view of the second fastening element 5 in the lower section of the railing post. The spacer element 51, the gripping element 52 and the gripping element 53 can be seen. The gripping element 52 has a rectangular bulge for gripping around a vertical post 71, the inside clearance of the bulge 52 being only slightly larger than the outside diameter of the vertical post 71. The gripping element 53 is also designed as a hook and engages through a continuous opening 74 of the reinforcement element 73 in the same. This construction prevents tilting movements in all directions. The distance between the longitudinal axis A of the railing post 2 and the longitudinal axis V of the vertical post 71 is dimensioned such that the railing post 2 can be connected essentially parallel to the vertical post 71, taking into account the previously described design of the first fastening element 4 and the second fastening element 5 of the railing post 2 .

figure 13 shows a leading railing 10. Two railing posts 2 and 2' can be seen (cf. figure 7 ) and a railing 1 (cf. figure 1 ). The first connection means 13 of the railing rail is connected to a connection element 3 of the railing post 2 . The second connection means 16, which is designed to be movable here, is connected to a connection element 3 of the railing post 2'. When the leading railing 10 is in the assembled state, the longitudinal axes A of the two railing posts are essentially spaced parallel to one another.

figure 14 shows scaffolding 20 with a leading railing 10 (cf. figure 13 ). The scaffolding 20 here comprises six vertical frames 7 and 7', which are distributed over two scaffolding levels E1 and E2. Each vertical frame comprises two vertical posts 71, which are connected to one another via a deck bar 72, a cross bar 75 and two stiffening elements 73, each with a continuous opening 74. The framework 20 also includes three decks 8 and six intermediate beams 6. The vertical posts 71 are extended along the axes V of the framework.

A scaffolding section comprises two vertical frames 7 and 7 ′, which are connected to one another via a deck 8 . As in this exemplary embodiment, two directly adjacent scaffolding sections of the same scaffolding level can share a vertical frame 7'. The decks 8 are each suspended in two deck bars 72 and secured by cross bars 75 .

The leading railing 10 here comprises three railing posts 2 which are connected to one another via two railing posts 1 . The railing bars 1 are each attached to the connecting elements 3 of the railing posts 2 . The railing posts 2 are each connected to a vertical post 71 via the first fastening elements 4 and the second fastening elements 5 . The second fastening elements 5 each enclose a vertical post 71 .

In the exemplary embodiment shown, one of the railing posts 2 is attached to a first fastening position of a first scaffolding section at the level of the scaffolding floor E1 and the other two railing posts are each attached to a second fastening position of a second scaffolding section at the level of the scaffolding floor E2. This arrangement is made possible by the handrail 1 according to the invention.

When erecting such a scaffolding 20, a first scaffolding section is erected on a first level E1, the first scaffolding section comprising the two vertical frames 7, which are connected to one another via a length 8. To fasten a leading railing 10 , two fastening posts 2 are connected to a railing post 1 to form a leading railing 10 . The railing posts are then attached to both vertical frames 7 at a first fastening position of the first scaffolding section. Each railing post 2 is arranged on a respective vertical post 71 in such a way that the second fastening element 5 of each railing post 2 encompasses a respective vertical post 71 and engages in a respective stiffening element 73 . The first fastening element 4 of the respective railing post 2 is then placed on the associated vertical post 71 of the first scaffolding section in such a way that the support surface 42 rests against the vertical post 71 and the vertical post 71 is arranged in the recess of the lateral guide 44 (cf. figure 11 ). In this state, there is already a temporary handrail 1 for support for the assembler, who then has to work on the second scaffolding floor E2. The scaffolder can then enter the second floor of the scaffolding to set up a second scaffolding section and a scaffolding railing from intermediate rails 6 .

Is now the in figure 14 shown second scaffolding floor E2 completed and the upper deck 8 in the vertical frame 7 of the second Suspended scaffolding level, the leading railing 10 is moved upwards without having to be dismantled and without requiring a second fitter. To do this, the fitter on scaffolding level E2 first detaches one of the two railing posts 2 from the associated vertical post 71 and fastens it by the second fastening element 5 of the railing post 2 gripping the vertical post 71 of the second scaffolding section, which connects upwards, and into the one that corresponds to the first scaffolding section Stiffening element 73 of the second frame section engages. This step is made possible by the movable connection means of the railing spar 1 . The distance between the first and the second fastening position is essentially the length of the vertical frame used, ie one storey height. The installer repeats exactly the same process with the other of the two railing posts 2. Then there is a leading railing with railing post 1 for the scaffolding floor E3 that is still to be created.

The use of the leading railing 10 on scaffolding levels with different scaffolding bay lengths is possible without any problems thanks to the railing post 1 with movable connection means. In order to ensure that the railings run ahead in the course of the ongoing assembly, only the railing posts 2 have to be moved, with the railing post 1 remaining mounted on the railing posts 2 .

It is also possible to connect several railing posts to each railing post. For this purpose, the railing posts 2 only have to have further connection elements 3 for the railing bars 1 .

Claims (12)

1. A railing spar (1) for an advancing railing comprising at least a first and a second connecting means (13; 16) for respective fastening to a connection element (4) of a railing post (2), wherein the railing spar (1) is tubular (11), in particular in the form of a hollow tube with a longitudinal axis (Q), and extends along this longitudinal axis (Q), wherein the railing spar (1) comprises a first and a second section (18; 19), the first section (18) comprising the first connection means (13) and the second section (19) comprising the second connecting means (16), the first section (18) and the second section (19) of the railing spar (1) being connected to one another by connecting means (14), and the railing spar (1) comprising precisely one elongated hole (17) extending in the direction of the longitudinal axis (Q), which is located in the second section (19) of the railing spar, and wherein the first connecting means (13) is in a fixed spatial relationship to the railing spar (1), characterised in that the second connecting means (16) is arranged in the elongated hole (17) so as to be movable, in particular displaceable, along the longitudinal axis (Q) and in that the connecting means movable along the longitudinal axis (Q) of the elongated hole (17, 17') is formed as a body with a through-opening and an external groove, in particular as guide rollers with a flange on both sides or a circumferential external groove, which is guided between the inner side of the elongated hole (17, 17').
2. Railing spar (1) according to one of the preceding claims, characterised in that the opposite ends of the railing spar (1) are formed as flat regions (12; 15), the connecting means (13; 16) being arranged in each of these flat regions (12; 15).
3. Railing spar (1) according to claim 2, characterised in that the flat areas (12; 15) define two planes which are substantially parallel to each other.
4. Railing spar (1) according to one of claims 1 to 3, characterized in that the connecting means movable along the longitudinal axis (Q) of the elongated holes (17, 17') are designed as a body with a through opening, in particular as a disc with a central hole, and the inner sides of the elongated holes (17, 17') each have a recess for at least partially receiving and guiding the connecting means along the longitudinal axis (Q), the recess being designed in particular in the shape of a U or V or part of a circle or semicircle.
5. Railing spar (1) according to one of the preceding claims, characterised in that the first section (18) and the second section (19) of the railing spar (1) are connected to one another by screw connections and/or welded connections and/or adhesive connections.
6. Railing spar (1) according to one of the preceding claims, characterised in that the elongated hole extending in the direction of the longitudinal axis of the railing spar has a length of between 200 and 1200 mm.
7. Railing spar (1) according to one of the preceding claims, characterised in that the length ratio of the first section (18) to the second section (19) is at least 1.5, preferably between 1.9 and 4.0.
8. Advancing railing (10) for temporarily securing a new scaffolding level to be erected against falling, characterized in that the advancing railing (10) comprises two railing posts and at least one railing spar (1) according to one of the preceding claims, wherein the railing spars can be detachably attached to a scaffolding and the first connecting means (13) and the second connecting means (16) of the railing spar (1) are each detachably connected to a railing spar, in particular a connecting element (3) of a railing spar.
9. Advancing railing (10) according to claim 8, characterised in that the railing posts (2; 2') in the assembled state each comprise an upper section (22) and a lower section (23), wherein in the region of the upper section (22) at least one, preferably exactly one, connecting element (3) is provided for connection to the connecting means (13, 16) of the railing post (1); 16) of the railing spar (1), wherein a first fastening element (4) for connection to a vertical frame (7) of a piece of scaffolding is arranged in the region of the lower section (23), wherein a second fastening element (5) for connection to the vertical frame (7) of a piece of scaffolding is arranged between the upper and the lower section (22; 23), a second fastening element (5) being arranged for connection to a vertical frame (7) of a scaffolding, the first fastening element (4) having a supporting surface (42) for supporting on the vertical frame (7) and an anti-tilt device (43) with lateral guide (44) for preventing tilting movements, in particular for preventing tilting movements and at least partial support of the lateral guide (44) on an intermediate spar (6) fastened between two vertical posts (71), the second fastening element (5) being designed in such a way that it can engage around a vertical post (71) of a vertical frame (7) and can engage in a stiffening element (73) arranged between the vertical post (71) and the decking bar (72), and the at least one connecting element (3) and the fastening elements (4; 5) are arranged on the same side of the respective railing post (2, 2').
10. Scaffolding (20) for construction, repair and/or assembly work, wherein the scaffolding (20) comprises at least two vertical frames (7), at least one deck (8) and at least one advancing railing (10) according to one of claims 8 or 9.
11. Scaffolding (20) according to claim 10, characterised in that the vertical frames (7) each comprise stiffening elements (73), in particular gusset plates and/or struts, between the vertical post (71) and the decking bar (72) at least on the side facing the advancing railing (10), the railing posts (2, 2') being arranged or arrangeable on these stiffening elements (73).
12. A method of erecting a scaffolding (20) according to claim 10 or 11 comprising the steps of:

    A: erecting a first scaffolding section on a first level, said first scaffolding section comprising two vertical frames (7; 7') which are connected to each other via a deck (8);

    B: mounting an advancing railing (10) according to claim 8 or 9 comprising a first railing post (2), a second railing post (2') and a railing spar (1), wherein the railing posts (2, 2') are each mounted at a first mounting position of the first scaffolding section and are interconnected via the railing spar (1);

    C: erecting a second scaffolding section on a second level, the second scaffolding section comprising two vertical frames (7; 7') which are connected to one another via a deck (8) and engage at the top in the vertical frames (7; 7') of the first scaffolding section;

    D: releasing the first or second guard-railing post and fixing it in a second fixing position of the second scaffolding section corresponding to its first fixing position, the distance between the first and second fixing positions corresponding substantially to the length of the vertical frames (7; 7') used;

    E: loosening the respective other railing post and fastening the loosened railing post at a second fastening position, corresponding to its first fastening position, of the second scaffolding section, the distance between the first and the second fastening position corresponding substantially to the length of the vertical frames (7; 7') used;

    characterised in that the displacement of the railing spar in step E is made possible by moving the connection means (16) of the railing spar (1).

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