Guardrail posts for a leading guardrail for a scaffold, scaffold with a leading guardrail and method for implementing a leading guardrail on a scaffold

Abstract

Railing post for a leading railing for a scaffold, scaffold with a leading railing and method for relocating a leading railing on a scaffold, wherein a third connection device (16) is designed as a projection device running in the transverse direction (Q) with a first connection region (34) connected to the railing post (10.1, 10.2, 10.3, 10.4), wherein the first connection region (34) has a downwardly pointing, in particular curved, projection unit (38, 38.1).

Description

TECHNICAL FIELD

[0001] The present invention relates to a railing post for a scaffold with scaffolding levels with longitudinally / vertically extending vertical posts / vertical frames, transversely / horizontally extending crossbars, railing stiles, decking for mounting a so-called leading railing, by means of which at least one temporary, telescopic railing stile can be mounted from an existing lower scaffolding level for an upper scaffolding level to be mounted above it, with a first connection device, a second connection device, a third connection device, wherein the first connection device is arranged in the upper end region of the railing post, to which at least one temporary railing stile can be detachably connected, the third connection unit is arranged in the lower end region of the scaffolding post, which can be detachably connected to existing components of the scaffolding,in particular with the vertical post with connected railing stiles or a rosette of the vertical post, the second connection device is arranged at a distance in the longitudinal direction above the third connection device, which can be releasably locked and connected to the vertical post of the scaffolding, a continuous rotatable shaft is arranged within the railing post, the rotatable shaft is connected to externally accessible rotary actuating devices which are arranged in the upper and / or lower end region of the railing post and are movable in one direction, in particular rotatable in the direction of rotation, the second connection device has a form-locking unit fixedly connected to the railing post and a movable, in particular rotatable, form-locking unit connected above or below or within the fixed form-locking unit,which is movable from a closed position to a maximum opening position and vice versa, whereby in the closed position a positive locking of an inserted railing post on a vertical post of the scaffold is provided.,

[0002] The present invention further relates to a scaffold with a leading railing with such railing beams and a method for relocating a leading railing on an existing scaffold.

[0003] Typically, side protection with a guardrail is only installed once the scaffolder is standing on the scaffold level being worked on. This is dangerous, as without side protection, the scaffolder is standing freely at great heights and, in the worst case, could fall from the scaffold. To increase safety, so-called leading guardrails are used, which provide side protection on the upper scaffold level being worked on.

[0004] Such advanced railings usually consist of a total of three individual components per scaffold bay: two identical railing posts connected to existing vertical scaffolding posts and to which at least one, in particular two, telescopic railing stiles are attached. The railing posts with the connected railing stiles are mounted from the scaffolding level below and, due to their length, provide at least one-piece side protection on the next, upper scaffolding level. Depending on the construction progress, one additional railing post of the advanced railing is successively moved upwards to secure the upper scaffolding level for further assembly work. Dismantling takes place in the reverse order. STATE OF THE ART

[0005] DE 10 2009 024 816 A discloses a railing post for a leading railing. It has two scissor-like claws that must be actively opened and closed for connection. A pin serves as a locking and securing mechanism in the lower area of ​​the scissor-like claws. To ensure a positive connection, the outer post tube of the railing post must be moved vertically, then twisted and lowered again. Releasing the locking mechanism occurs in the reverse order. A disadvantage of this leading railing is that an unpleasant vertical and horizontal movement must be performed when assembling and disassembling the leading railing. Furthermore, care must be taken during assembly to ensure that the upper and lower scissor-like claws are fully connected to the vertical frame or vertical post to be attached and also enclose it.

[0006] EP 1 338 723 A2 discloses a device for mounting a temporarily existing railing beam of a scaffold, in which the third lower connecting device is hooked onto existing railing beams and the second connecting device is connected to the railing beam by means of a U-shaped receiving unit with a wedge unit.

[0007] EP 1 571 275 A2 discloses a device for mounting a temporarily existing railing post with connected telescopic railing spars to existing vertical posts of a scaffold according to the features of the preamble of claim 1. The railing post has claws with an automatic clamping function, wherein a continuous rotatable shaft is inserted inside the railing post, which can be rotatably actuated via actuating units and is connected to the claws via a relatively complex mechanism. To connect the vertical post to the railing post, the claws must be actively opened and closed by a rotary movement of the actuating unit. For this purpose, the actuating unit is rotated accordingly. A disadvantage of this solution is that an active rotary movement must be performed during assembly and disassembly of the leading railing. In addition, the internal mechanism is relatively complex and prone to damage.During assembly, it is also important to ensure that the upper and lower claws are fully connected and locked into place on the vertical frame or vertical post to be attached. DESCRIPTION OF THE INVENTION

[0008] Based on the cited prior art, the present invention is based on the object or technical problem of providing a railing post for a leading railing that provides secure side protection on the next upper scaffolding level, can be quickly and easily installed from the scaffolding level below, ensures a durable and robust construction with permanently reliable functionality, and can be manufactured economically. The present invention is further based on the object or technical problem of providing a scaffold with a leading railing that ensures high safety standards and enables simple, quick, and thus economical assembly and disassembly of the leading railing.The present invention is further based on the object of specifying a method for transferring a leading railing from an existing scaffolding level to a scaffolding level above it which is still to be installed, which method ensures quick and easy installation while at the same time ensuring permanently reliable function of the leading railing.

[0009] The railing post according to the invention is defined by the features of independent claim 1. Advantageous embodiments and further developments are the subject of claims 2 to 15, which are directly or indirectly dependent on independent claim 1.

[0010] An alternative railing post according to the invention is given by the features of independent claim 16 and further developed in claims 17 and 18.

[0011] The scaffolding according to the invention with a leading railing is given by the features of claims 19 and 20.

[0012] Methods according to the invention for relocating a leading railing on a scaffold are given by the features of claims 21 and 22.

[0013] The railing post according to the invention is accordingly characterized in that the movable form-locking unit is connected, in particular directly, to the rotatable shaft, an elastic element is present which acts on the movable form-locking unit and holds it in the closed position under its sole effect, the movable form-locking unit is designed in its front end region in such a way that it initially opens in the opening direction when pressed against a vertical post of the scaffolding and, after exceeding a predeterminable position / displacement of the vertical post, that is to say when the maximum opening position is reached, moves into the closed position due to the effect of the spring force of the elastic element and thus at least partially encloses the vertical post in a form-fitting manner and securely locks it.To release the connection, the upper or lower rotary actuating device is turned in the direction of rotation so that the movable form-locking unit moves in the opening direction or rotates in the direction of rotation and releases the railing post.

[0014] A particularly advantageous further development, which is particularly simple in design and ensures permanently reliable function, is characterized by the fact that the elastic element is designed as a torsion spring.

[0015] According to an advantageous embodiment, particularly simple assembly is ensured in that the fixed form-locking unit is designed as a fork construction open towards its free end area, in particular U-shaped.

[0016] A particularly preferred development is characterized in that the rotatable form-locking unit is designed as a hook unit with an inclined end contour in its free end region. The inclined end contour advantageously ensures that an automatic connection process is easily achieved by simply pressing it against the vertical post of the existing scaffolding. The rotatable form-locking unit initially expands upon pressing it against the vertical post. Upon reaching the open position, the elastic element returns or "snaps" it into the closed position upon further movement of the railing post, thereby positively securing the railing post to the vertical post.

[0017] A particularly preferred embodiment with regard to permanently reliable functionality, which also ensures high connection security, is characterized in that the fixed form-locking unit and the rotatable form-locking unit have, at least in some areas, a partially circular inner contour profile which corresponds to the outer contour profile of the vertical post, wherein, viewed in a plan view, in the closed position of the rotatable form-locking unit together with the fixed form-locking unit, a completely or almost completely circular inner contour results, which securely locks the inserted vertical post in a form-fitting manner.

[0018] A particularly simple design, which ensures a high positioning accuracy with regard to the definition of the required connection geometries, is characterized by the fact that there is a stop unit on the railing post or the fixed form-locking unit, to which the rotatable form-locking unit strikes in the closed position.

[0019] A particularly preferred structurally simple embodiment is characterized in that the rotatable form-locking unit is connected to the rotatable shaft via a connecting means that is guided within a slot of the railing post.

[0020] With regard to particularly simple assembly and disassembly of the railing post, an advantageous development is characterized by the fact that the upper rotary actuation device is arranged below the first connection device and / or the lower rotary actuation device is arranged above the third connection device. This ensures that the rotary actuation devices are easily accessible to the assembly personnel during the respective assembly process.

[0021] A particularly preferred embodiment, which ensures the functional safety of a leading railing, is characterized in that the second connection device is arranged within the railing post in such a way that, when the railing post is connected to the vertical post, it is arranged directly below a projecting component of the scaffolding, in particular a gusset plate, so that displacement in the longitudinal direction is blocked.

[0022] An advantageous embodiment which ensures the secure connection of the railing post, particularly when used within the framework of a well-known Layher Allround scaffolding ®< (registered trademark) system, is characterized in that the railing post above the second connection device has a safety stop unit which projects from the railing post, particularly in the transverse direction, and which is arranged within the scaffolding post in such a way that, when the railing post is connected to the vertical post, it is arranged directly below a projecting component, particularly a rosette, of the vertical post and blocks displacement in the longitudinal direction.

[0023] A particularly preferred embodiment of the railing post according to the invention, which, with regard to the arrangement of the temporary railing post in the connected state of the leading railing to the scaffolding, ensures particularly small distances from the inner edge of the temporary railing post to the outer edge of the decking or toe board when viewed from above, is characterized in that the first connection device is designed as a projection device with two horizontally spaced projecting projection units, the clear inner distance of which is greater than the outer diameter of the vertical post and in the end region of which there is a connection unit for the temporary telescopic railing post, wherein the first connection device is characterized in terms of an advantageous geometry in that the projection length of the first connection device is so large thatFor guardrail posts connected to the vertical post, the connecting units are located next to the vertical post, either in its immediate vicinity or extending beyond the vertical post into the interior of the scaffold. This allows, for example, a distance of less than or equal to 80 mm between the temporary guardrail post and toeboard, as seen from above, to be easily achieved.

[0024] A particularly simple design for connecting the temporary railings is characterized by the fact that the connecting units each have a tilting pin.

[0025] An advantageous further development, which ensures simple assembly or disassembly or simple relocation of the leading railing, is characterized in that the third connection device is designed as a projection device extending in the transverse direction with a first connection area connected to the railing post or a second connection area or a second connection area connected to the first connection area in the transverse direction, wherein the first connection area has a downwardly pointing, in particular curved, projection unit and / or the second connection area has a recess open downwards in the longitudinal direction.

[0026] An alternative, particularly advantageous railing post according to the invention, which is designed independently of the first and second connection devices described above, for a scaffold with scaffold levels with longitudinally / vertically extending vertical posts / vertical frames, transversely / horizontally extending crossbars, railing stiles, and decking, for mounting a so-called leading railing, by means of which at least one temporary, telescopic railing stile can be mounted from an existing lower scaffold level for an upper scaffold level to be mounted above it, with a first connection device, a second connection device, and a third connection device, wherein the first connection device is arranged in the upper end region of the railing post, to which at least one temporary railing stile can be detachably connected, the third connection unit is arranged in the lower end region of the scaffold post,which can be detachably connected to existing components of the scaffolding, in particular to the vertical post with connected railing stiles or a rosette of the vertical post, the second connection device is arranged at a distance in the longitudinal direction above the third connection device, which can be detachably locked and connected to the vertical post of the scaffolding, is characterized in that the third connection device is designed as a projection device extending in the transverse direction with a first connection area connected to the railing post or a second connection area or a second connection area connected to the first connection area in the transverse direction, wherein the first connection area has a downwardly facing projection unit and / or the second connection area has a recess open downwards in the longitudinal direction.

[0027] With regard to the connection security, a preferred embodiment of the railing post according to the invention is characterized in that the second connection area has an outwardly open receiving unit with two spaced-apart legs, on each of which the downwardly open recess is formed.

[0028] A particularly advantageous embodiment of the railing post according to the invention, which can preferably be used in modular scaffolding, is characterized in that the projection unit is designed as a profile unit that is curved, in particular toward the railing post. The design as a curved profile unit ensures both simple assembly and disassembly by simply threading the profile unit into or out of the recess of a rosette of the vertical post. In the assembled state, it is secured against longitudinal displacement, since in the vertical final assembly position of the railing post, the curvature of the profile unit blocks upward lifting in the vertical direction (longitudinal direction).

[0029] The railing post according to the invention ensures particularly simple and functionally safe assembly, disassembly, or relocation of the leading railing. The railing post enables automatic securing of the leading railing, whereby the leading railing can only be released actively by actuating the rotary actuation devices. Furthermore, the railing post according to the invention has a robust mechanism compared to known systems and is suitable for use with modular scaffolding (e.g., Layher Allround Scaffolding ®< (registered trademark) - system) and facade scaffolding (e.g., Layher Blitz Scaffolding ®< (registered trademark) - system).The structural design shown reliably prevents vertical and horizontal displacement from being possible when the leading railing is connected, but rather the leading railing can only be actively released by actuating the rotary actuation devices.

[0030] A facade scaffolding according to the invention (for example Layher Blitz Gerüst ®< (registered trademark)) with a leading railing is described by the following features: Scaffolding with a vertical frame with vertical standards and with crossbars connecting the vertical standards in the transverse direction via a gusset plate and with railing stiles connected to the vertical standards with a connected leading railing with the railing post described above, wherein temporary telescopic railing stiles are connected to the first connection device on both sides, the third connection device is suspended in the existing railing stiles via its downwardly open recesses of the second connection area in the connection area of ​​the existing railing stiles to the vertical standard,the vertical post passes through the open recess of the second connection area and the second connection device is connected to the vertical post directly below the gusset plate, thus blocking upward displacement in the longitudinal direction.

[0031] A modular scaffold (for example Layher Allround scaffolding ®< (registered trademark)) is described by the following features: Scaffold with vertical standards with rosettes with recesses connected in the longitudinal direction in a predetermined grid dimension and with crossbars connecting the vertical standards in the transverse direction to the rosettes by means of wedge head connections and guardrails connected to the rosettes of the vertical standards with a connected leading guardrail with the guardrail post described above, wherein temporary telescopic guardrails are connected to the first connection device on both sides, the third connection device is provided via its longitudinally downward-facing, in particular curved, projection unit pushed into a recess in the rosette to which the existing guardrails are connected,so that a displacement in the longitudinal direction is blocked by the safety stop unit or by the curved contour of the projection unit, the second connecting device is connected to the vertical post.,

[0032] The method according to the invention for relocating a leading railing on a façade or modular scaffolding, with railing posts as described above connected to vertical posts, from an existing secured scaffolding level for a further scaffolding level to be mounted and secured above it, is characterized by the following method steps: Rotating the upper rotary actuating device to release the locking of the second connection device from the vertical post, tilting the railing post outwards, lifting the railing post longitudinally upwards to release the third connection device from the vertical post, further lifting the railing post longitudinally upwards until the height of the existing railing post is reached, hanging the third connection device at the height of the rosette with connected existing railing posts by inserting the projection unit into a recess in the rosette or at the height of the connection of the existing railing posts to the vertical post by hanging the second connection area with the recesses in the existing railing posts, tilting the railing post towards the vertical post of the scaffolding until it strikes the rotatable form-fitting unit of the second connection device,further pressing of the railing post against the action of the elastic element in the direction of the vertical post, so that the rotatable form-locking unit opens and the railing post is moved further in the direction of the vertical post and when its vertical end position, i.e. the maximum opening position, is reached, the rotatable form-locking unit automatically moves into the closed position due to the action of the elastic element and, in its vertically aligned end position, together with the fixed form-locking unit, at least partially or almost completely surrounds the railing post in a form-fitting manner and thus securely locks it.

[0033] A further method according to the invention for relocating a leading railing on a façade or modular scaffolding with the above-described railing posts connected to vertical posts from an existing secured scaffolding level for a further scaffolding level to be mounted and secured above it is characterized by the following method steps: Detaching the second connection device from the vertical post, tilting the railing post outwards, lifting the railing post longitudinally upwards to detach the third connection device from the vertical post, further lifting the railing post longitudinally upwards until the height of the existing railing post is reached, hanging the third connection device at the height of the rosette with connected existing railing posts by inserting the, in particular curved, projection unit into a recess in the rosette or at the height of the connection of the existing railing posts to the vertical post by hanging the second connection area with the recesses in the existing railing posts, tilting the railing post in the direction of the vertical post of the scaffolding to connect the railing post to the vertical post via the second connection device, connecting the second connection device to the vertical post.

[0034] The railing post according to the invention shown here provides a quick-to-assemble and robust railing post for a leading railing. Its first design includes a second connection device with a wedge- or U-shaped pipe holder for the vertical post. This second connection device opens automatically when pressure is applied against the vertical post using a simple mechanism (snap mechanism with torsion spring). It then immediately closes again as soon as the vertical post has reached its end position and is completely enclosed by the rotatable form-locking unit. A simple rotary movement of the rotary actuating devices opens the second connection device with its rotatable form-locking unit, allowing the railing post to be moved.One advantage of this is that the railing post secures itself automatically, but the installer must actively unlock it using the operating device to move the leading railing. This saves a lot of time during installation, as threading it into receiving devices or connecting devices as in the prior art is no longer necessary, and fewer manual steps are required for installation than before. The rotating form-locking unit is connected to the two rotating operating devices via the rotating shaft in the outer tube of the scaffolding post, so that the railing post can be secured and unlocked using both operating devices, both in the upper and lower areas. The existing elastic element (torsion spring) guarantees reliable locking of the railing post via the second connecting device on the vertical post.

[0035] The third connection device in the lower section of the railing post is used for optimal installation on the railing connector of a system assembly frame, for example, a Layher SpeedyScaf ®< (registered trademark) system, and / or on the rosette of a vertical standard, for example, a Layher AllroundScaf ®< (registered trademark) system. The third connection device is simply placed or hooked in and is secured against displacement by precisely fitting recesses.

[0036] An alternative railing post according to the invention for a modular scaffold (Layher Allroundgerüst ®< (registered trademark)) has a third connection device with only a first connection area, which has a curved profile unit on the underside. The first and second connection devices can be designed as desired and each only needs to fulfill the desired functionality. This means that temporary railing stiles must be detachably connectable to the first connection device, and the second connection device must be detachably connectable and lockable to the vertical post.

[0037] Further embodiments and advantages of the invention will become apparent from the features further recited in the claims and from the exemplary embodiments given below. The features of the claims and the exemplary embodiments may be combined with one another in any manner, provided they are not obviously mutually exclusive. SHORT DESCRIPTION OF THE DRAWING

[0038] The invention, as well as advantageous embodiments and further developments thereof, are described and explained in more detail below with reference to the examples shown in the drawings. The features shown in the description and the drawings can be used individually or in any combination according to the invention. They show: Fig. 1 Perspective view of a first embodiment of a railing post for a leading railing, suitable for use on a facade scaffold, for example Layher Blitz Gerüst ®< (registered trademark) - system, with a first connection device, a second connection device and a third connection device and rotary actuation device for releasing the second connection device, Fig. 2 Perspective view of a second embodiment of a railing post for a leading railing, suitable for use on a modular scaffold, for example Layher Allroundgerüst ®< (registered trademark) - system, with a first connection device, a second connection device and a third connection device and rotary actuation device for releasing the second connection device, Fig. 3 Schematic perspective view of a third connection device according to Fig. 1 and 2, Fig. 4 schematic detail side view of the second connection device of the railing post according to Fig. 1 to a façade scaffold, Fig. 5 schematic detailed view of the third connection device of a railing post according to Fig. 1 to a façade scaffold, Fig. 6 schematic detailed view of the connection of the second connection device of a railing post according to Fig. 2 to a modular scaffold, Fig. 7 schematic detailed view of the connection of a third connection device of a railing post according to Fig. 2 to a modular scaffold, Fig. 8 schematic perspective view of the second connection device of the railing post according to Fig. 1 and 2in closed state, without connection to a vertical post, Fig. 9 schematic perspective view of the second connection device with rotary actuation device in the open state, Fig. 10 schematic detailed perspective view of the second connection device in the closed state with representation of the stop unit and connection to the rotatable shaft, Fig. 11 schematic detailed sectional perspective view of the second connection device according to Fig. 10 , Fig. 12 schematic side view of the second connection device according to Fig. 11 , Fig. 13 schematic perspective view of the first connection device of the railing post according to Fig. 1 , Fig. 14 schematic detailed perspective view of a first assembly state of the railing post according to Fig. 1 to a façade scaffold, Fig. 15 schematic detailed perspective view of the connection of the railing post according to Fig. 1to a facade scaffold in the assembled final state, Fig. 16 schematic detailed perspective view of a scaffolding field of a facade scaffold in an intermediate assembly state, Fig. 17 schematic detailed perspective view of a facade scaffold with mounted railing posts according to Fig. 16 in the final state, Fig. 18 schematic perspective view of three scaffolding bays of a facade scaffold with mounted leading railings, Fig. 19 schematic perspective view of three scaffolding bays with a mounted leading railing with already mounted scaffolding decks and assembly frames in the scaffolding level arranged above, Fig. 20 schematic perspective view of a railing post connected to a vertical post of a modular scaffold according to Fig. 2, Fig. 21 Perspective view of a third embodiment of a railing post for a leading railing, suitable for use on a facade scaffold, for example Layher Blitz Gerüst ®< (registered trademark) - system, as well as for use on a modular scaffold, for example Layher Allroundgerüst ®< (registered trademark) - system, with a first connection device, a second connection device and a third connection device and rotary actuation device for releasing the second connection device, Fig. 22 Schematic perspective view of a third connection device according to Fig. 21 , Fig. 23 schematic detailed view of the second connection device according to Fig. 21 to a modular scaffold, Fig. 24 schematic detailed view of the connection of a third connection device of a railing post according to Fig. 21to a modular scaffold and Fig. 25Perspective view of a fourth embodiment of a railing post for a leading railing, suitable for use on a modular scaffold, for example Layher Allroundgerüst ®< (registered trademark) - system, with a first connection device, a second connection device and a third connection device with a curved projection unit and rotary actuating device for releasing the second connection device. WAYS TO CARRY OUT THE INVENTION

[0039] In Fig. 1 A first embodiment of a railing post 10.1 is shown, which is used as part of a leading railing on a façade scaffold, such as the Layher Blitz Scaffold ®< (registered trademark) system. The railing post 10.1 is designed as a round tube. The longitudinal direction of the railing post 10.1 is in Fig. 1indicated by the reference symbol L and the transverse direction perpendicular to the longitudinal direction L is in Fig. 1 indicated by the reference symbol Q.

[0040] The railing post 10.1 has a first connection device 12.1 in its upper end region, spaced from the front end surface, to which two telescopic temporary railing bars can be detachably connected on both sides.

[0041] Immediately below the first connecting device 12.1, an upper rotary actuating device 22.1 designed as a rotary handle is arranged, which can be rotated in the direction of rotation D about the longitudinal direction L and is connected to a continuous, rotatably mounted shaft arranged in the inside of the railing post 10.1, which in Fig. 1 is not visible. The rotating shaft 18 is not visible from the illustration in Fig. 11 partially visible.

[0042] A further first connection device 12.1 is connected below the upper rotary actuation device 22.1. Both first connection units 12.1 protrude in the transverse direction Q.

[0043] A third connecting device 16 is connected to the lower end area of ​​the railing post 10.1 at a distance from the lower end face, which also projects in the transverse direction Q. Above the third connecting device 16, a lower rotary actuating device 22.2 is arranged, which is designed as a rotary handle, can be rotated in the direction of rotation D and can be connected to the Fig. 1 not shown rotatable shaft (reference numeral 18 see Fig. 11 ) is connected.

[0044] Above the lower rotary actuating device 22.2, a second connecting device 14 is connected, which also projects in the transverse direction Q and has a non-rotatably connected form-locking unit 24 and a rotatable form-locking unit 26 connected to the rotatable shaft 18.

[0045] In Fig. 2 A second embodiment of a railing post 10.2 is shown, which is used as part of a leading railing in a modular scaffold, in particular a Layher Allround Scaffold ®< (registered trademark) system. This railing post 10.2 essentially has the same lower and upper rotary actuation device 22.1, 22.2, the same second connection device 14 and the same third connection device 16 as in the railing post 10.1 according to Fig. 1is present. Identical components bear the same reference numerals and will not be explained again. One difference from the railing post 10.1 is that the first connection device 12.2 is designed as a projection unit 76 with a tilt pin 74 for the detachable connection of the telescopic temporary railing stiles. The further first connection device 12.2 below the upper rotary actuation device 22.1 is also designed as a projection unit 76 with a tilt pin 74.

[0046] Finally, in the case of the railing post 10.2, there is additionally provided between the further first connection device 12.2 and the second connection device 14 a connected safety stop unit 32 extending in the transverse direction Q.

[0047] The third connection device 16 is in Fig. 3shown in more detail. A first connecting region 34 extending in the transverse direction Q is formed on the railing post 10.1 or 10.2, said first connecting region having a downwardly facing projection unit 38. Connected to the first connecting region 34 is a second connecting region 36 extending in the transverse direction Q, said second connecting region having a U-shaped receiving unit 48 with two legs, as seen in a plan view, wherein both legs have a downwardly open U-shaped recess 40 on the underside.

[0048] The U-shaped receiving unit 48 has a semicircular inner contour in its receiving base.

[0049] The second connection device 14 is in the Figures 8 to 12shown in more detail. The second connection device 14 has a fixed form-fitting unit 24 which is firmly connected to the railing posts 10.1, 10.2 and projects in the transverse direction Q. The form-fitting unit has an outwardly open U-shaped recess 35 with projection units 33 arranged on both sides. The inner base of the U-shaped recess 35 has a partially circular inner contour, in particular a semicircular inner contour 25. This inner contour 25 has a radius of curvature which essentially corresponds to the radius of curvature of the outer circumferential contour of a vertical post of a scaffold to be connected.

[0050] Slightly spaced above the fixed form-locking unit 24, a rotatable form-locking unit 26 is connected, which as in Fig. 10 shown via a connecting pin 44, which is guided in a slot 42 in the outer wall of the railing post 10.1, 10.2, to the rotatable shaft 18 (see Fig. 11 ) connected.

[0051] The rotatable form-locking unit 26 is designed in its front end region as a hook unit with a partially circular inner contour 27, the radius of curvature of which essentially corresponds to the radius of curvature of the outer contour of the railing post 10.1, 10.2. In the front end region of the hook unit, it has an inclined end contour 51.

[0052] Between the fixed form-locking unit 24 and the rotatable form-locking unit 26 there is arranged an elastic element 28 which is designed as a torsion spring and is connected to both form-locking units 24, 26.

[0053] By guiding the connecting unit 44 in the slot 42, the maximum rotational movement D of the rotatable form-locking unit 26 is limited. Furthermore, a stop unit 30 is formed on the fixed form-locking unit 24, to which the rotatable form-locking unit 26 in the closed position according to Fig. 8and strikes due to the action of the elastic element 28. In the closed position, the inclined front end contour 51 of the rotatable form-locking unit 26, together with the inner contour of a projection unit 33 of the first form-locking unit 24, forms a V-shaped recess in a plan view, in which the vertical post of the scaffold is initially placed during assembly.

[0054] If a compressive force in the transverse direction Q in the direction of the railing post 10.1, 10.2 is applied to the inclined end contour 51, for example by pressing the second connecting device 14 against a vertical post of a scaffold, the rotatable form-locking device opens against the action of the elastic element 28. As soon as the pressed vertical post has reached the bottom of the U-shaped recess 35, i.e. the part-circular contour 35, the rotatable form-locking unit 26 snaps back into the closed position due to the action of the elastic element 28, whereby the inserted vertical post is positively encompassed and securely locked in its inserted position.

[0055] The Fig. 9 shows the rotatable form-locking unit 26 in the opening position, which is achieved by rotating the rotary actuating device 22.1 in the direction of rotation D. In this position, the vertical stem can be released from the second connecting device.

[0056] The Fig. 4 shows in detail the connection of the second connection device 14 of the railing post 10.1 to a facade scaffold with a vertical post 58.1, to which a crossbar 60.1 is connected via a gusset plate 64, into which decking for walking on the scaffolding levels is hooked during scaffolding construction. The second connection device 14 is connected to the vertical post 58.1 directly below the gusset plate 64, so that an upward movement of the railing post 10.1 in the longitudinal direction L is prevented by the second connection device 14 striking the gusset plate 64 on the underside.

[0057] In Fig. 5, the connection of the third connection device 16 to the vertical standard 58.1 of a facade scaffolding, which can be, for example, the well-known Layher Blitz Gerüst ®< (registered trademark) system, is shown. A railing box 78 is connected to the vertical standard 58.1, in which existing railing stiles 68 of the scaffolding are detachably connected. The third connection device 16 is suspended with its second connection area 36 from above via the U-shaped recess 40 on both sides in the connection area of ​​the existing railing stiles 68 to the vertical standard 58.1, wherein the vertical standard 58.1 penetrates between the two legs of the U-shaped receiving unit 48 and comes into contact with the partially circular inner contour of the base of the receiving unit 48.

[0058] In Fig. 6The connection of the second connection device 14 to a vertical post 58.2 of a modular scaffold is shown. Rosettes 66 with connection recesses are provided on the vertical post 58.2 in a grid pattern defined in the longitudinal direction L. Such a modular scaffold can, for example, be the well-known Layher Allround Scaffolding ® (registered trademark) system.

[0059] The safety stop unit 32 is arranged in such a way that it is located directly below a rosette 66, i.e. the railing post 10.2 can practically not be moved upwards in the longitudinal direction L, since the safety stop unit 32 strikes the rosette 66.

[0060] In Fig. 7The connection of the third connection device 16 to the vertical post 58.2 is shown. The first connection area 34 is suspended with its downwardly facing projection unit 28 in a recess of the rosette 66, and the vertical post 58.2 extends through the U-shaped receiving unit 48.

[0061] In Fig. 13 the first connection device 12.1 is shown in more detail.

[0062] The first connecting device 12.1 is designed as a fork-shaped structure with two parallel, spaced-apart projection units 76, each of which has a connection unit 72 with a tilting pin 74 at its free end for the detachable connection of a temporary, telescopic railing post of a leading railing. The clear internal distance A of the projection unit 76 is greater than the outer diameter of the vertical post 58.1, 58.2 of the scaffold. The projection units 76 are additionally connected to each other by an inwardly offset crosspiece 75.

[0063] The illustrated design allows the connection units 72 of the first connection device 12.1 to be positioned significantly closer to the scaffolding or scaffolding decking when the railing post 10.1 is connected, in contrast to known connection devices in which the temporary railing post is connected on the outside in front of the vertical post. This ensures that, when connected, the distance between the inner contour of the temporary railing post 20 and the outer contour of the decking or a toeboard does not exceed a permissible value of, for example, 80 mm when viewed from above.

[0064] The Figures 14 to 19show the use of the railing post 10.1 as part of a leading railing in various installation positions on a facade scaffolding system such as the Layher Blitz Scaffold ® (registered trademark) system. The facade scaffold 50 has vertical frames 56 with parallel, transversely spaced vertical posts 58.1, each connected to a crossbar 60.1 via a gusset plate 64 in the upper end area. A cross profile 70 connects the two vertical posts 58.1 in the lower end area.

[0065] As in Fig. 14As shown, the railing post 10.1 is first hooked into the existing railing post 68 with its third connection device 16 from above in the connection area of ​​the existing railing rails 16 to the vertical post 58.1 and is initially in an outwardly inclined position, in which the second connection device 14 with its rotatable form-locking unit 26 rests against the outer contour of the vertical post 58.1. By further pressing the railing post 10.1 towards the vertical post 58.1, the rotatable form-locking unit 26 opens until the Fig. 15 shown vertical end position of the railing post 10.1 is reached. In this position, the rotatable form-locking unit 26 snaps into the closed position due to the effect of the elastic element and the vertical post 58.1 is positively enclosed by the second connection device 14 and thus locked. Figures 14 and 15The detachably connectable telescopic railing bars of the leading railing are not shown.

[0066] The Fig. 15 The connection situation of the railing post 10.1 to the vertical post 58.1 shown corresponds to the connection of the second connection device 14 in the detailed illustration according to Fig. 4 and with regard to the third connection device 16 of the detailed illustration according to Fig. 5 .

[0067] The Figures 16 to 19 show the use of the railing post 10.1 in the context of a leading railing with telescopic railing beams 20 connected to both first connecting devices 12.1 in different mounting positions in a scaffolding bay ( Figures 16 to 19 ) and in three scaffolding fields ( Fig. 18 and 19 ).

[0068] Fig. 16shows an intermediate assembly state of a scaffold bay of a lower level 54 of the scaffold 50, in which the left railing post 10.1 is still in a lower assembly position and the right railing post 10.1 is already connected in its final position to secure an upper scaffold level 52. The Fig. 17 shows the state in which the left railing post 10.1 is also connected in the (temporary) upper position.

[0069] Fig. 18 shows the state of a connected leading railing with three scaffold bays of the scaffold 50 according to the assembly state of Fig. 17 .

[0070] Fig. 19 shows the further assembly progress starting from the state according to Fig. 18 . After installing the leading railing according to Fig. 18Planks 62 are hooked into the crossbars 60.1 of the vertical frames 56, so that the upper scaffolding level 52 can be accessed by the assembly personnel, while at the same time side protection is provided by the leading railing with its railing posts 10.1 and the temporary railing beams 20. Then, as in Fig. 19 shown, vertical frames 56 are placed on the vertical frames 56 of the lower scaffolding level 54, whereby the railing posts 10.1 are then successively moved to the height of the upper scaffolding level 53 with respect to the further assembly progress, so that side protection is provided for a further scaffolding level to be assembled.

[0071] In Fig. 20 The connection of a guardrail post 10.2 to the vertical standard 58.2 of a modular scaffold, for example the Layher Allround Scaffolding ®< (registered trademark) system, is shown. Fig. 20 The connection situation of the second connection device 14 shown corresponds to the detailed representation of Fig. 6 and the connection situation of the third connection device 16 corresponds to the detailed representation of Fig. 7 .

[0072] The modular scaffolding consists of two parallel, spaced-apart vertical uprights 58.2 with rosettes 66 arranged in a grid pattern in the longitudinal direction L, which are connected to each other in the upper and lower end areas via crossbars 60.2 using a wedge head connection. In the longitudinal direction of the scaffolding 50, longitudinal bars 63 are connected to the rosettes 66 in the upper and lower end areas of the vertical upright 58.2. In the central area, existing guardrails 68 are connected to the rosettes 66.

[0073] The Fig. 21 shows a third embodiment of a railing post 10.3, which basically has the same construction as the railing post 10.2 according to Fig. 2, but with the following differences. The railing post 10.3 does not have a safety stop unit 32 and the third connection device 16 - shown in more detail in Fig. 22 - differs from the third connection device according to Fig. 3 in that a projection unit 38.1 is formed onto the first connection area 34, pointing downward in the longitudinal direction L, which is designed as a curved profile unit, wherein the curvature contour is configured such that the free end area of ​​the projection unit 38.1 is curved toward the railing post 10.3. Identical components bear the same reference numerals and will not be explained again.

[0074] The railing post 10.3 has the advantage that it can be used with both façade scaffolding (Layher Blitz Gerüst ®< (registered trademark) system) and modular scaffolding (Layher Allroundgerüst ®< (registered trademark) system). Assembly and disassembly on a vertical standard 58.1, 58.2 of a scaffold 50 is carried out in the same manner as described above, just as with the railing posts 10.1 and 10.2.

[0075] When mounting the railing post 10.3 to a vertical post 58.1 with rosettes 66, the curved projection unit 38 is threaded into a recess in the rosette, then the railing post 10.3 is moved into the vertical position, and the second connection device 14 is connected to the vertical post 58.1. In this final assembly position, the railing post 10.3 is secured against upward lifting in the longitudinal / vertical direction, as the curved projection unit 38.1 blocks any upward movement.

[0076] Lifting the railing post out of the rosette 66 is only possible if the second connection device 14 is actively released and the railing post is tilted accordingly so that the curved contour of the projection unit can be moved out of the recess of the rosette.

[0077] In Fig. 25 a fourth embodiment of a railing post 10.4 is shown, which basically has the same structure as the railing post 10.3 according to Fig. 21, but with the difference that there is no second connection area 36 on the third connection device 16, but rather it consists solely of the first connection area 34 with a curved projection unit 38.1 formed on the underside. Such a railing post 10.4 is suitable for connection to a vertical post 58.2 of a modular scaffold (Layher Allroundgerüst ®< (registered trademark)). The assembly process is analogous to that described above.

[0078] Identical components have the same reference symbol and are not explained again.

[0079] A variant not shown relates to an alternative structurally different design of the railing post 10.3, whereby the Fig. 25The illustrated first connection device 12.2 and second connection device 14 are used, and the rotary actuating devices 22.1 and 22.2, respectively, and the rotatable shaft are omitted with regard to the second connection device 14. The structural design of the first and second connection devices 12.2, 14 only needs to be designed in such a way that they fulfill the required functionality, i.e., that temporary railing stiles can be detachably connected to the first connection device 12.2 and the second connection device 14 can be detachably locked and connected to a vertical post.

Claims

1. Railing post (10.1, 10.2, 10.3) for a scaffold (50) with scaffold levels (52, 54) with vertical posts (58.1, 58.2) / vertical frames (56) running in the longitudinal direction (L) / vertical direction, crossbars (60.1, 60.2) running in the transverse direction (Q) / horizontal direction, railing stiles (68), decking (62), for mounting a so-called leading railing, by means of which at least one temporary railing stile (20) can be mounted from an existing lower scaffold level (54) for an upper scaffold level (52) to be mounted above it, with - a first connection device (12.1, 12.2), - a second connection device (16), - a third connection device (18), wherein - the first connection device (12.1, 12.2) is arranged in the upper end region of the Railing post (10.1, 10.2, 10.3) is arranged, to which at least one temporary railing beam (20) can be detachably connected, - the third connection unit (16) in the lower end region of the scaffolding post (10.1, 10.2, 10.3) is arranged, which can be detachably connected to existing components of the scaffold (50), in particular to the vertical post (58.1) with connected railing stiles (68) or a rosette (66) of the vertical post (58.2), - the second connection device (14) is arranged at a distance in the longitudinal direction (L) above the third connection device (16), which can be detachably locked and connected to the vertical post (58.1, 58.2) of the scaffold (50), - the second connection device (14) has a first form-locking unit (24) which is firmly connected to the railing post (10.1, 10.2, 10.3) and a movable, in particular rotatable, form-locking unit (26) which is connected above or below or within the fixed form-locking unit (24), which can be moved from a closed position into a maximum opening position and vice versa, wherein in the closed position a positive locking of an inserted railing post (10.1, 10.2, 10.3) on a vertical post (58.1, 58.2) of the framework (50) is given, - . characterized in that - the third connection device (16) is designed as a projection device running in the transverse direction (Q) with - a first connection region (34) connected to the railing post (10.1, 10.2, 10.3, 10.4) - wherein the first connection region (34) has a downwardly pointing, in particular curved, projection unit (38, 38.1).

2. Railing post according to claim 1, - characterized in that - the rotatable form-locking unit (26) is designed as a hook unit which has an inclined end contour in its free end region (51).

3. Railing post according to claim 2, - characterized in that- the fixed form-locking unit (24) and the rotatable form-locking unit (26) have, at least in some regions, a partially circular inner contour which corresponds to the outer contour of the vertical post (58.1, 58.2), wherein, viewed in a plan view, in the closed position of the rotatable form-locking unit (26) together with the fixed form-locking unit (24) a completely or almost completely circular inner contour results, which securely locks the inserted vertical post (58.1, 58.2) in a form-fitting manner.

4. Railing post according to one or more of the preceding claims, - characterized in that - the rotatable form-locking unit is rotatable via an upper rotary actuating unit, wherein the upper rotary actuating device (22.1) is arranged below the first connecting device (12.1, 12.2).

5. Railing post according to one or more of the preceding claims, - characterized in that- the second connection device (14) is arranged within the railing post (10.1, 10.3) in such a way that, when the railing post (10.1) is connected to the vertical post (58.1), it is arranged directly below a projecting component of the scaffolding, in particular a gusset plate (64), so that displacement in the longitudinal direction (L) is blocked.

6. Railing post according to one or more of the preceding claims, - characterized in that in the end region of the first connection unit (12.1) there is at least one connection unit (72) for the temporary railing bar (20).

7. Railing post according to claim 6, - characterized in that - the connection units (72) each have a tilting pin (74).

8. Railing post according to one or more of the preceding claims, - characterized in that- the third connection device (16) is designed as a projection device extending in the transverse direction (Q) with - a second connection region (36) connected to the first connection region (34) in the transverse direction (Q), - wherein the second connection region (36) has a recess (40) open downwards in the longitudinal direction (L).

9. Railing post (10.1, 10.2, 10.3, 10.4) for a scaffold (50) with scaffold levels (52, 54) with vertical posts (58.1, 58.2) / vertical frames (56) running in the longitudinal direction (L) / vertical direction, crossbars (60.1, 60.2) running in the transverse direction (Q) / horizontal direction, railing stiles (68), decking (62), for mounting a so-called leading railing, by means of which at least one temporary railing stile (20) can be mounted from an existing lower scaffold level (54) for an upper scaffold level (52) to be mounted above it, with - a first connection device (12.1, 12.2), - a second connection device (16), - a third connection device (18), wherein - the first connection device (12.1, 12.2) is arranged in the upper end region of the railing post (10.1, 10.2, 10.3, 10.4), to which at least one temporary railing beam (20) can be detachably connected, - the third connection unit (16) in the lower end region of the scaffolding post (10.1, 10.2, 10.3, 10.4) is arranged, which can be detachably connected to existing components of the scaffolding (50), in particular to the vertical post (58.1) with connected railing bars (68) or a rosette (66) of the vertical post (58.2), - the second connection device (14) is arranged at a distance in the longitudinal direction (L) above the third connection device (16), which can be detachably locked and connected to the vertical post (58.1, 58.2) of the scaffolding (50), - . characterized in that- the third connection device (16) is designed as a projection device running in the transverse direction (Q) with - a first connection area (34) connected to the railing post (10.1, 10.2, 10.3, 10.4) or - a second connection area (36) or - a second connection area (36) connected to the first connection area (34) in the transverse direction (Q), - wherein the first connection area (34) has a downwardly pointing projection unit (38, 38.1) and / or the second connection area (36) has a recess (40) open downwards in the longitudinal direction (L).

10. Railing post according to claim 8 or 9, - characterized in that - the second connection region (36) has an outwardly open receiving unit (48) with two spaced-apart legs, on each of which the downwardly open recess (40) is formed.

11. Railing post according to one or more of claims 8 to 10, - characterized in that- the projection unit (38.1) is designed as a curved profile unit, in particular towards the railing post (10.1, 10.3).

12. Scaffolding (50) with vertical frame (56) with vertical posts (58.1) and with crossbars (60.1) connecting the vertical posts (58.1) in the transverse direction (Q) via a gusset plate (64), and with railing stiles (68) connected to the vertical posts (58.1), - with a connected leading railing with railing posts (10.1, 10.3) according to one or more of the preceding claims 1 to 18, - wherein temporary railing stiles (20) are connected to the first connecting device (12.1) on both sides, - the third connecting device (16) is suspended in the existing railing stiles (68) via its downwardly open recesses (40) of the second connecting region (36) in the connecting region of the existing railing stiles (68) to the vertical post (58.1), - the vertical post (58.1) runs through the open recess (48) of the second connection area (36) and - the second connection device (14) to the vertical post (58.1) is connected directly below the gusset plate (64) and thus an upward displacement in the longitudinal direction (L) is blocked.

13. Scaffolding (50) with vertical posts (58.2) with rosettes (66) with recesses connected in the longitudinal direction (L) in a predetermined grid dimension and with cross bars (60.2) connecting the vertical posts (58.2) in the transverse direction (Q) by means of wedge head connections to the rosettes (66) and with railing stiles (68) connected to the rosettes (66) of the vertical posts (58.2) - with a connected leading railing with railing posts (10.2, 10.4) according to one or more of the preceding claims 1 to 18, - wherein the first connection device (12.2) temporary railing stiles (20) are connected on both sides, - the third connecting device (16) is inserted into a recess in the rosette (66) via its projection unit (38) pointing downwards in the longitudinal direction (L), in particular a curved one, to which the existing railing stiles (68) are connected, so that displacement in the longitudinal direction (L) is blocked by the safety stop unit (32) or by the curved contour of the projection unit (38), - the second connecting device (14) is connected to the vertical post (58.2).

14. Method for relocating a leading railing on a scaffold, in particular according to claim 12 or 13, with railing posts (10.1, 10.2, 10.3, 10.4) connected to vertical posts (58.1, 58.2) according to one or more of claims 8 to 11 from an existing secured scaffolding level (54) for a further scaffolding level (52) to be mounted and secured above it, characterized byfollowing process steps: - Detaching the second connection device (14) from the vertical post (58.1, 58.2), - Tilting the railing post (10.1, 10.2, 10.3, 10.4) outwards, - Lifting the railing post (10.1, 10.2, 10.3, 10.4) in the longitudinal direction (L) upwards to detach the third connection device (16) from the vertical post (58.1, 58.2), - Further lifting of the railing post (10.1, 10.2, 10.3, 10.4) in the longitudinal direction (L) upwards until the height of the existing railing post (68) is reached, - Hanging the third connection device (16) at the height of the rosette (66) with connected existing railing posts (68) by inserting the, in particular curved projection unit (38.1) into a recess of the rosette (66) or at the level of the connection of the existing railing stiles (68) to the vertical post (58.1) by hanging the second connection area (36) with the recesses (40) into the existing railing stiles (68), - tilting the railing post (10.1, 10.2, 10.3, 10.4) in the direction of the vertical post (58.1, 58.2) of the scaffold (50) for connecting the railing post (10.1, 10.2, 10.3, 10.4) to the vertical post (58.1, 58.2) via the second connecting device (14), - connecting the second connecting device (14) to the vertical post (58.1, 58.2).