EP3839172A1 - 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

Abstract

Handrail (1) for a leading railing comprising at least a first and a second connection means (13; 16) for the respective attachment to a connection element (3) of a handrail post (2), the handrail (1) as a tube (11), in particular a hollow tube is formed with a longitudinal axis (Q) and extends along this longitudinal axis (Q), wherein the handrail (1) comprises a first and a second section (18; 19), the first section (18) the first connection means (13) and the second section (19) comprises the second connection means (16), characterized in that the first and / or the second section (18; 19) each have an elongated hole (17, 17 ') extending in the direction of the longitudinal axis (Q) comprises, in each of which a connection means (13; 16) is arranged to be movable, in particular displaceable, along the longitudinal axis (Q).

Description

The present invention relates to a handrail for a leading handrail, a leading handrail for temporarily securing a new scaffolding level to be created, a scaffolding for construction, repair and / or assembly work and a method for building 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 standards or vertical frames, the decking bars, the decks, the handrails and, if necessary, the diagonals of a floor have been installed, the deck for the floor to be installed above can first be installed.

Leading railings are used in order to provide the fitter of a scaffolding with certain securing elements already when climbing into a top, newly created scaffolding level, which provide him with 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 known scaffolding systems in which frames are used which replace the railings and diagonals. After the assembly of such a frame, the upper horizontal ledgers already form the railing for the scaffolding floors still to be assembled above. The frame structure itself is part of the scaffolding. Another embodiment is known in which also a frame is used whose upper horizontal ledger forms the railing ahead. During assembly, this frame is hooked into two pre-assembled handrails and then has to be moved on a floor-by-floor basis in order to ensure that the handrail hurries ahead. Both frame constructions are relatively bulky, heavy and therefore complex to assemble. In any case, several fitters have to be used for the assembly or disassembly.

Next are from the DE 102 08 191 A1 telescopic handrail bars with a first, designed as a hollow profile, spar and a second spar which can be pushed in or out in this first spar and 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 become canted, which ultimately leads to the said railing rails becoming inoperative.

Based on the prior art mentioned, the present invention is based on the object of eliminating these and other disadvantages of the prior art and, in particular, of specifying a device of the type mentioned at the beginning, which enables the assembly of a leading railing from an existing scaffolding floor in a simple manner for a scaffolding day to be created above, which significantly reduces the assembly effort for providing the leading railing, which can be produced economically and which can be assembled and relocated by just one fitter.

The task is in particular by a handrail, a leading handrail, a scaffold and a method according to the independent Claims solved. Advantageous refinements and developments are the subject of the dependent claims.

In particular, the object is achieved by a handrail for a leading handrail. The handrail spar comprises at least a first and a second connection means for the respective attachment to a connection element of a handrail post. The railing spar is tubular, in particular designed as a hollow tube with a longitudinal axis and extends along this longitudinal axis. The handrail comprises a first and a second section, wherein the first section comprises the first connection means and the second section comprises the second connection means. The first and / or the second section of the handrail each comprises an elongated hole extending in the direction of the longitudinal axis, in which a connecting means is arranged so as to be movable, in particular displaceable, along the longitudinal axis.

Such a handrail can be easily and quickly attached to a handrail post and detached and in particular allows the handrail posts connected to the handrail to be moved one after the other to vertically adjacent scaffolding levels without the need to detach the handrail from the handrail post.

The connection means of the handrail are designed in such a way that they can each be brought into operative connection with a connection element of a handrail post and enable a secure connection between the handrail and the handrail post. This will provide a safe, leading handrail.

The railing spar has an essentially round cross-sectional profile, in particular a tubular cross-sectional profile, on. As a result, the railing spar has great torsional and bending stiffness 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 handrail is essentially parallel to a horizontal scaffolding level formed by a scaffolding deck.

The first and second sections of the handrail can be made of metals such as structural steel and / or aluminum and / or of other suitable materials that have sufficient strength to provide a safe leading handrail and still allow the handrail to be manufactured in a sufficiently inexpensive manner.

The first and / or the second section of the handrail each include an elongated hole extending in the direction of the longitudinal axis.

In the event that only one section of the handrail has an elongated hole, that of the two sections of the handrail is referred to as the second section, which includes the elongated hole, in connection with the present invention.

In this context, an elongated hole is understood to mean 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 one or both narrow sides are optionally replaced by curves.

The expansion of the elongated hole in the direction of the longitudinal axis of the handrail defines the maximum displacement of the connecting means arranged in the elongated hole along the longitudinal axis of the handrail.

The clear inner distance of the two long sides of the elongated hole is to be selected in comparison to the outer diameter of the part of the connecting means guided in the elongated hole so that the movable connecting means can be moved easily along the longitudinal axis of the railing.

The railing spar preferably comprises exactly one elongated hole extending in the direction of the longitudinal axis. In this case, the first connection means is immovable, i.e. it is in a fixed spatial relationship to the railing spar. The second connection means is movable, in particular displaceable, arranged in the elongated hole along the longitudinal axis.

Such a handrail with exactly one movable connection means has a high torsional and bending stiffness and, moreover, can be manufactured even more simply and cost-effectively compared to the designs which comprise two or more movable connection means.

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

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

Due to the second connection means, which is movably, in particular displaceable, arranged in the elongated hole along the longitudinal axis, the handrail posts of the leading handrail connected to the handrail can be moved one after the other and by a single person to a vertically adjacent scaffolding level without the handrail being loosened from the railing post is required. This leads to increased safety for the fitter while at the same time reducing the workload.

The opposite ends of the handrail are preferably designed as flat areas. Here, 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 simply and inexpensively by flattening the tube ends. The flat areas make it possible to move the longitudinal axis of the handrail closer in the direction of the plane spanned by the handrail posts, whereby the force absorption is optimized and the safety for the user is increased. In addition, the flat areas make it easy to equip the handrail with the connecting means.

Preferably, the two flat areas of the handrail define two planes which represent planes that are essentially parallel to one another and that do not lie in one plane.

This facilitates the connection of the connection means of the handrail with the connection elements of the handrail post. Preferably, the connection means movable along the longitudinal axis of the elongated holes are each designed as a body with a through opening and an outer groove, which are guided between the inner sides of the elongated holes.

The inner sides of an elongated hole each serve as guide rails, which are at least partially received by the outer groove of the connecting means movably arranged in the elongated hole. As a result, the movable connection means can be moved safely along the extension of the elongated hole in the longitudinal direction of the handrail, with movements of the connection means transverse to the longitudinal axis of the handrail being limited by the outer groove. The movable connection means has a slight play with respect to the width of the elongated hole, as a result of which the movable connection means can be guided smoothly along the elongated hole. The overlap area of the outer groove and the guide rails must be selected so that the connecting means cannot become detached from the guide rails under the intended conditions of use of the handrail.

The movable connection means are particularly preferably designed as guide rollers with a flange on both sides or a circumferential external 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 holes, 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 holes each have a recess for at least partially receiving and guiding the connecting means along the longitudinal axis, the recess being in particular U- or V- or part-circular or semicircular.

Through the recess on the inside of the elongated hole, the movable connection means can be moved safely along the extent of the elongated hole in the longitudinal direction of the railing bar, with movements of the connecting means being limited transversely to the longitudinal axis of the railing bar by the recess.

The first section and the second section of the handrail are preferably connected to one another by connecting means. In particular, the connecting means can be screw connections and / or weld connections and / or adhesive 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 handrail and enables a selection of materials tailored to the respective requirements of both sections.

The length of the at least one elongated hole in the handrail must be dimensioned so that the handrail can be used in different scaffolding. The elongated hole extending in the direction of the longitudinal axis of the handrail rail preferably has a length between 200 and 1200 millimeters.

This range of values allows the handrail to be used in a leading railing for a scaffold with the usual scaffolding bay lengths and the usual spacing between adjacent horizontal scaffolding levels, without the need to loosen the handrail when the two guardrail posts connected to the handrail are moved one after the other to a vertically adjacent, overlying scaffolding level is.

The first and second sections of the handrail can be of different lengths. As a result, railing bars can be provided for use in scaffolding with different scaffolding bay lengths and / or different spacing between adjacent horizontal planes. However, both sections can also be of the same length. This would allow a greater balance to be achieved, depending on the materials used. The length ratio of the first section to the second section is preferably at least 1.5, preferably between 1.9 and 4.0.

As a result, the railing spar has great torsional and bending stiffness for safe use in the railing in front. This range of values also makes it possible to use the handrail in a leading handrail for a scaffold with normal scaffold bay lengths and normal distances between adjacent horizontal scaffold levels.

The task is also solved by a leading railing for temporary fall protection of a new scaffolding level to be created. The leading handrail comprises at least one handrail as described above and two handrail posts. The railing posts can be detachably attached to a scaffold. The first connection means and the second connection means of the handrail are each detachably connected to a railing post, in particular a connecting element of a railing post.

Such a leading railing is easy to attach and detach.

The railing spar can have flattened ends, in particular with at least one recess, preferably at least one continuous one Have opening for connection to the connecting elements of the railing post. This enables an attachment that is easy to manufacture. By means of the at least one movable connection means of the handrail according to the invention, this can in particular be fastened to the handrail posts in such a way that the handrail posts are movable relative to one another, in particular are variable in their horizontal distance from one another. This enables simple handling of the leading handrail, in particular a successive relocation of the handrail posts connected to the handrail to vertically adjoining scaffolding levels of a scaffolding without the need to detach the handrail from the handrail post.

In the assembled state, 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 handrail is arranged in the area of the upper section. Preferably, exactly one connection element for connection to the connection means of the handrail is arranged in the area of the upper section. In the area of the lower section, a first fastening element for connecting the railing post to a vertical frame of a scaffolding is arranged. 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 supporting on the vertical frame and a tilt protection with lateral guide to prevent tilting movements, in particular to prevent tilting movements and at least partial support of the lateral guide on an intermediate spar fastened between two vertical posts. The second fastening element is designed in such a way that it can grip around a vertical post of a vertical frame and in a stiffening element arranged between the vertical post and the covering bar can intervene. The at least one connection element and the first as well as 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 area of the upper section of the handrail post allows the handrail to be fastened as a safety device at a height suitable for the scaffold 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 an optimal transfer of forces to the vertical frame and prevents tilting movements of the railing post or the leading railing away from the scaffolding in the assembled state. The tilting 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 spar 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 enables a vertical support of the vertical frame to be grasped around which the railing post is attached 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 to it are prevented. By engaging the second fastening element in a stiffening element arranged between the vertical post and the decking bar, the forces acting vertically on the railing post in the assembled state are transferred to the vertical frame and tilting movements in the remaining direction, i.e. in the opposite direction to the transverse direction mentioned, are prevented at the same time. The described configuration of the second fastening element prevents tilting movements of the railing post or 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 railing in front.

By arranging the connection elements and fastening elements on the same railing post side, the assembly of the leading railing is particularly simple.

The object is also achieved by a scaffold for construction, repair and / or assembly work. The scaffolding comprises at least two vertical frames, at least one covering and at least one leading railing as described above.

In the assembled state, 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 handrail of the leading handrail, depending on the fastening position of the connected handrail posts, the distance between two adjacent horizontal ones Scaffolding days and the length of the scaffolding bay, the cutting angles are between 0 and 90 °.

Such a scaffold can be erected quickly and safely.

The framework can be made of metals such as structural steel, aluminum and / or other suitable materials. Metals such as structural steel are cheap and have sufficient stability. The vertical frames can comprise foot elements for resting on the floor, in particular one foot element per vertical post of a vertical frame. This means that the scaffolding is stable. The foot elements can be adjustable in height. This means that unevenness in the subsurface can be easily leveled out. The framework can comprise one or more framework levels. This makes it easy and safe to work on the house. The coverings can include wood planks, metal or plastic grids, mats, or other suitable materials. The framework can comprise at least one ladder. This makes it easy to move from one floor to the other. The ladder can be folded up or arranged immovably on the scaffolding. Fold-up ladders take up less space. Fixed ladders require less maintenance. The scaffold preferably comprises at least one horizontal intermediate spar between adjacent vertical frames, as a result of which the scaffold can be built up in a stable manner.

Preferably, the vertical frames each include stiffening elements between the vertical post and the decking bar, 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 railing in front 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 building a scaffold as described above. The procedure consists of the following steps:

1. A construction of a first scaffolding section on a first level, the first scaffolding section comprising two vertical frames which are connected to one another via a covering;
2. B Attach a leading railing as described above. The leading handrail comprises a first handrail post, a second handrail post and a handrail, the two handrail posts are each attached to a first fastening position of the first scaffold section and are connected to one another via the handrail;
3. C building up a second scaffolding section on a second level, the second scaffolding section comprising two vertical frames which are connected to one another via a covering and which engage at the top in the vertical frames of the first scaffolding section;
4. D releasing the first or second handrail post and fastening it to a second fastening position of the second scaffolding section that corresponds to its first fastening position. The distance between the first and the second fastening position essentially corresponds to the length of the vertical frames used;
5. E releasing the respective other handrail post and fastening the released handrail post at 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 being essentially corresponds to the length of the vertical frames used;

In the method described above, the relocation of the handrail post is made possible in step E by moving the connecting means of the handrail in the elongated hole.

With this method, scaffolding can be erected easily, quickly and safely. When moving, the position of the guardrail posts shifts to each other, but they remain connected to each other via the guardrail.

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 with the aid of figures. The same reference symbols always designate components of the same type of embodiment, unless explicitly stated otherwise. Here show:

Figure 1

A handrail in a perspective view;

Figure 2

The handrail in a side view;

Figure 3

The handrail in a plan view;

Figure 4

A movable connection means in a plan view;

Figure 5

The movable connection means in a perspective view;

Figure 6

The movable connection means in a side view;

Figure 7

A railing post in perspective view;

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 handrail post with the handrail attached;

Figure 11:

A perspective view of the first fastener in the lower portion of the railing post;

Figure 12:

A perspective view of the second fastener in the lower portion of the railing post;

Figure 13:

A leading railing;

Figure 14:

A scaffolding with a railing in front.

Figure 1 shows a handrail 1 comprising a handrail body 11 with a continuous round tube profile which is extended along the longitudinal axis Q of the handrail 1. The railing spar 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 spar 1 further comprises the flat areas 12 and 15, connecting means 13 and 16, connecting means 14 and an elongated hole 17, which is designed here as a continuous opening, in the area of the second section 19. The connecting means 13 and 16 are each designed as continuous openings , the first connection means 13 being immovably arranged in the flat area 12 of the handrail 1 and the second connection means 16 being movably guided in the elongated hole 17 of the flat area 15.

In the assembled state of the leading railing, the railing strut 1 is arranged essentially horizontally (cf. Figure 13 and Figure 14 ). The railing spar 1 has a total length of about 2300 mm. The tubular handrail body 11, which defines the first section 18, has a round cross section with an outside diameter of approximately 40 mm. The flat area 15, which defines the second section 19, extends over a length of approximately 780 mm along the longitudinal axis Q of the handrail and has a width of approximately 8 mm. The flat area 15 includes the elongated hole 17, the width of which has a clear inner diameter of approximately 27.5 mm and the length of which has a clear inner diameter of about 710 mm along the longitudinal axis Q of the handrail. The hole diameter of the connection means 13 and 16 is each approximately 25 mm. The movable connection means 16 has a slight play of approximately 1.5 mm with respect to the width of the elongated hole 17, as a result of which the movable connection means 16 can be guided smoothly along the elongated hole 17. The movable railing rail 1 is made of metal.

The handrail 1 is used as part of a leading handrail 10, the connection means 13 and 16 of the handrail being each attached to a connection element 3 of a handrail post 2 (cf. Figure 9 ).

Figure 2 and Figure 3 show the handrail 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 represent planes essentially parallel to one another.

The Figures 4 to 6 show a movable connection means in a top view, a perspective view and a side view. In this exemplary embodiment, the movable connection 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 through opening, which corresponds to the inner diameter of the hollow cylinder 162, is selected so that the railing strut 1 can be pushed onto a connection element 3 of a railing post. In this exemplary embodiment, the diameter of the through opening is approximately 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 somewhat smaller than the width of the elongated hole in order to achieve a To enable easy movement of the movable connection means 16 in the elongated hole 17. The profile depth of the outer groove 161 is designed in such a way that the connecting means 16 cannot be unintentionally removed from the elongated hole 17. In this exemplary embodiment, the two flanges 163 protrude on both sides about 0.8 mm beyond the clear inner distance between the two longitudinal sides of the elongated hole 17.

Figure 7 shows a railing post in perspective view. The railing post 2 comprises in this embodiment a railing post body 21, here a continuous round tube, two connection 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 between the upper and the lower section is arranged. The first fastening element 4 has a spacer element 41, a support surface 42, a tilt lock 43 and a lateral guide 44. The free end region of the spacer element 41 is designed as a support surface 42 which, in the assembled state of the railing post 2, is at least regionally 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 clear inner distance of the lateral guide 44 is only slightly larger than the outer diameter of the vertical post 71. The anti-tipping device 43 is designed here in the form of two parallel spaced tabs which run obliquely downward when the railing bar is installed. 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 connection 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 Figure 11 shows a perspective view of an upper portion of the railing post with the railing stile attached. A connection can be seen between a connection element 3 of the railing post 2 and an immovable connection means 13 (provided without a reference number) of the railing spar 1.

The connection element 3 comprises a connection pin 31 and a tilting element 33. The tilting element 33 is mounted on the connection pin 31 via an axis of rotation 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 handrail 1 is placed on 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 handrail 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. The spacer element 41, the support surface 42, the anti-tip device 43 and the lateral guide 44 can be seen. The anti-tip device 43 is designed here in the form of two parallel spaced tabs, which are inclined in the assembled state of the handrail run downwards and at least partially rest on a junction of intermediate spars 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 encompassing element 52 and the engaging element 53 can be seen. The encompassing element 52 has a rectangular bulge for engaging around a vertical stem 71, the clear inner distance of the bulge 52 being only slightly larger than the outer diameter of the vertical stem 71 is also designed as a hook and engages in the same through a through opening 74 of the reinforcing element 73. 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 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 handrail 1 (cf. Figure 1 ). The first connection means 13 of the handrail is connected to a connection element 3 of the handrail 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 ′. In the assembled state of the leading railing 10, the longitudinal axes A of the two railing posts are spaced apart essentially parallel to one another.

Figure 14 shows a scaffold 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 covering bar 72, a cross bar 75 and two stiffening elements 73, each with a through opening 74. The framework 20 here also comprises three decks 8 and six intermediate spars 6. The vertical posts 71 are extended along the framework axes V.

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 on the same scaffolding level can share a vertical frame 7 '. The coverings 8 are each suspended in two cover 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 bars 1. The railing bars 1 are each fastened to the connection 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 encompass a vertical post 71. In addition, each first fastening element 4 rests on a junction of intermediate bars 6 and vertical post 71. In the embodiment shown, one of the guardrail posts 2 is attached to a first fastening position of a first scaffolding section at the level of the scaffolding levels E1 and the other two guardrail posts are each attached to a second attachment position of a second scaffolding section at the level of the scaffolding levels E2. This arrangement is made possible by the handrail 1 according to the invention.

When erecting such a scaffold 20, a first scaffold section is built up on a first level E1, the first scaffold section comprising the two vertical frames 7, which are connected to one another via a platform 8. To attach a leading railing 10, two fastening posts 2 are connected to a railing strut 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 vertical post 71 in such a way that the second fastening element 5 of each railing post 2 engages around a 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 on 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, a temporary handrail 1 is already available for support for the fitter, who then has to work on the second scaffolding level E2. The scaffold builder can then enter the second scaffolding level in order to set up a second scaffolding section and a scaffolding railing from intermediate spars 6.

Is now the in Figure 14 Second scaffolding E2 shown completed and the upper deck 8 in the vertical frame 7 of the second Suspended from the scaffolding stage, the leading railing 10 is moved upwards without having to be dismantled and without the need for a second fitter. The fitter located on the scaffolding level E2 first releases one of the two railing posts 2 from the associated vertical post 71 and attaches it by the second fastening element 5 of the railing post 2 grasping the upwardly adjoining vertical post 71 of the second scaffolding section and into the one corresponding to the first scaffolding section Stiffening element 73 engages the second frame section. This step is made possible by the movable connection means of the handrail 1. The distance between the first and the second fastening position is essentially the length of the vertical frames used, that is to say a floor height. The fitter repeats exactly the same process with the other of the two handrail posts 2. Thereafter, a railing with handrail 1 is available in advance for the scaffolding days E3 that are still to be created.

The railing strut 1 with movable connection means enables the leading railing 10 to be used without problems on scaffolding days with different scaffolding bay lengths. To ensure a railing ahead in the course of the ongoing assembly, only the railing posts 2 have to be moved, with the railing strut 1 remaining mounted on the railing post 2.

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

Claims (14)

Handrail (1) for a leading railing comprising at least a first and a second connection means (13; 16) for the respective attachment to a connection element (4) of a handrail post (2), the handrail (1) being tubular (11), in particular as a hollow tube is formed with a longitudinal axis (Q) and extends along this longitudinal axis (Q), wherein the handrail (1) comprises a first and a second section (18; 19), wherein the first section (18) the first connection means (13) and the second section (19) comprises the second connection means (16), characterized in that the first and / or the second section (18; 19) each have an elongated hole (17, 17 ') extending in the direction of the longitudinal axis (Q) comprises, in each of which a connection means (13; 16) is arranged to be movable, in particular displaceable, along the longitudinal axis (Q). The handrail (1) according to claim 1, characterized in that the handrail (1) comprises exactly one elongated hole (17) extending in the direction of the longitudinal axis (Q), the first connection means (13) in a fixed spatial relationship to the handrail (1) ) and the second connection means (16) in the elongated hole (17) along the longitudinal axis (Q) is movable, in particular is arranged displaceably. The handrail (1) according to any one of the preceding claims, characterized in that the opposite ends of the handrail (1) are designed as flat areas (12; 15), the connecting means (13; 16) each in these flat areas (12; 15) ) are arranged. Handrail (1) according to Claim 3, characterized in that the flat areas (12; 15) define two planes which represent planes essentially parallel to one another. Handrail (1) according to one of claims 1 to 4, characterized in that the connecting means movable along the longitudinal axis (Q) of the elongated holes (17, 17 ') each take the form of a body with a through opening and an external groove, in particular as guide rollers with a flange on both sides or a circumferential outer groove, which are guided between the inner sides of the elongated holes (17, 17 '). Handrail (1) according to one of claims 1 to 4, 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 continuous opening, in particular as a disk with a central hole, and the insides 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 in particular u- or v- or part-circular or semicircular. The handrail (1) according to any one of the preceding claims, characterized in that the first section (18) and the second section (19) of the handrail (1) are connected to one another by connecting means (14), in particular screw connections and / or welded connections and / or adhesive connections are connected. The handrail (1) according to any one of the preceding claims, characterized in that the elongated hole extending in the direction of the longitudinal axis of the handrail has a length between 200 and 1200 mm. Railing spar (1) according to one of the preceding claims, characterized 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. Leading railing (10) for temporarily securing a new scaffolding level to be created, characterized in that the leading railing (10) comprises two railing posts and at least one railing spar (1) according to one of the preceding claims, the railing posts being releasably attachable to a scaffolding and the first connection means (13) and the second connection means (16) of the handrail (1) are each detachably connected to a railing post, in particular a connecting element (3) of a railing post. Leading railing (10) according to claim 10, characterized 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 area of the upper section (22) at least one, preferably exactly one, connection element (3) for connection to the connection means (13; 16) of the handrail (1) is arranged, with a first fastening element (4) for connection to a vertical frame (7) in the area of the lower section (23) a scaffold is arranged, wherein a second fastening element (5) for connection to a vertical frame (7) of a scaffolding is arranged between the upper and the lower section (22; 23), wherein the first fastening element (4) a support surface (42) for supporting on the vertical frame (7) and a tilt protection (43) with lateral guide (44) to prevent tilting movements, in particular to prevent tilting movements and at least partially support the lateral guide (44) on an intermediate two vertical posts (71) attached intermediate beam (6), wherein the second fastening element (5) is designed in such a way that it can grip around a vertical post (71) of a vertical frame (7) and in a between vertical post (71) and covering bar ( 72) arranged stiffening element (73) can engage and wherein the at least one connection element (3) and the fastening elements (4; 5) are arranged on the same side of the respective railing post (2, 2 '). Scaffolding (20) for construction, repair and / or assembly work, the scaffolding (20) comprising at least two vertical frames (7), at least one covering (8) and at least one leading railing (10) according to one of Claims 10 or 11 . Scaffolding (20) according to Claim 12, characterized in that the vertical frames (7) each have 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 leading railing (10) ), wherein the railing posts (2, 2 ') are arranged or can be arranged on these stiffening elements (73). A method for building a scaffolding (20) according to claim 12 or 13, comprising the steps of: A construction of a first scaffolding section on a first level, the first scaffolding section comprising two vertical frames (7; 7 ') which are connected to one another via a covering (8); B fastening of a leading handrail (10) according to claim 10 or 11 comprising a first handrail post (2), a second handrail post (2 ') and a handrail (1), the railing posts (2, 2') each at a first fastening position attached to the first scaffolding section and connected to one another via the handrail (1); C building up 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 covering (8) and engage at the top in the vertical frames (7; 7') of the first scaffolding section; D releasing the first or second handrail post and fastening it to a second fastening position of the second scaffold section that corresponds to its first fastening position, the distance between the first and the second fastening position essentially corresponding to the length of the vertical frames (7; 7 ') used; E releasing the respective other handrail post and fastening the released handrail post 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 corresponding to the length of the vertical frames (7; 7 ') used;
characterized in that the displacement of the railing post in method step E is made possible by moving the connecting means (16) of the railing spar (1).

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