ES3036117T3 - Railing post for a leading railing for a scaffolding, scaffolding having a leading railing, and method for implementing a leading railing on a scaffolding - Google Patents

Abstract

Railing post (10.1) for a scaffold (50) with scaffold levels (52, 54) and vertical elements (58.1) with a first connecting device (12.1), a second connecting device (16) and a third connecting device (18). The second connecting device (14) includes a first shape-adjusting unit (24) fixed to the railing post (10.1) and a movable shape-adjusting unit (26) movable from the closed position to the maximum open position and vice versa. In the closed position, the inserted railing post (10.1) is fixed by means of a shape lock in a vertical element (58.1) of the scaffold (50). It is characterized in that the movable shape-adjusting unit (26) is connected to a driveable rotary shaft (18) and a spring element (28) acts on the movable shape-adjusting unit. (26) and keeps the latter in the closed position under its sole action, and the movable form-fitting unit (26) is formed in its end region such that, when pressure is applied to a vertical member (58.1) of the scaffolding (50), said unit first opens in the opening direction and, after overcoming a predeterminable position/displacement of the vertical member (58.1), i.e. upon reaching the maximum opening position, moves into the closed position under the action of the spring force of the elastic element (28) and thus at least partially encloses the vertical member (58.1) in a tight manner and locks it securely. (Automatic translation with Google Translate, no legal value)

Description

DESCRIPTION

Guardrail post for a temporary guardrail for a scaffold, scaffold with a temporary guardrail, and method for implementing a temporary guardrail on a scaffold

Technical field

The present invention relates to a guardrail post for a scaffold with scaffold platforms with vertical uprights/frames extending in the longitudinal/vertical direction, transverse stiles extending in the transverse/horizontal direction, guardrail uprights, linings for mounting a so-called temporary guardrail, by means of which at least one temporary telescopic guardrail upright can be mounted, from an existing lower scaffold platform to an upper scaffold platform to be erected above it, with a first connecting device, a second connecting device and a third connecting device, wherein the first connecting device is arranged in the region of the upper end of the guardrail post, to which at least one temporary guardrail stile can be removably connected, the third connecting device is arranged in the region of the lower end of the scaffold post, which can be removably connected to existing components of the scaffold, in particular to the vertical upright with connected guardrail uprights or to a rosette of the vertical upright, the second connecting device is arranged at a certain distance in the longitudinal direction above the third connecting device, which can be removably locked in the vertical upright of the scaffold, a continuous rotary shaft is arranged inside the guardrail post, the rotary shaft is connected to externally accessible rotary drive devices, which are arranged in the region of the upper and/or lower ends of the guardrail post and can move in one direction, in particular rotate in the direction of rotation, the second connecting device has a first form-fitting unit fixedly connected to the guardrail post and a movable, in particular rotatable, form-fitting unit connected above or below or within the fixed form-fitting unit, which can be moved from a closed position to a maximum open position and vice versa, wherein in the closed position a form-fitting of a guardrail post inserted into a vertical upright of the scaffold is provided.

The present invention further relates to a scaffold with a temporary railing with railing uprights of this type and to a method for implementing a temporary railing on an existing scaffold.

As a general rule, side protection with a guardrail upright is only installed when the scaffolder is standing on the platform of the scaffold on which they will be working. This is dangerous, as the scaffolder is exposed to great heights without side protection and, in the worst case, could fall from the scaffold. Therefore, to increase safety, so-called temporary guardrails are used to provide side protection at the upper level of the scaffold on which they will be working.

Temporary guardrails of this type generally consist of a total of three individual components per scaffold section, namely two identical guardrail posts that are connected to the existing vertical uprights of the scaffold and to which at least one, in particular two, telescopic guardrail posts are connected. The guardrail posts with the attached guardrail posts are assembled from the lower scaffold platform and, due to their length, provide at least one-piece side protection on the next higher scaffold platform. Depending on the progress of construction work, another guardrail post of the temporary guardrail is gradually moved upwards to secure the upper scaffold platform for subsequent assembly work. Disassembly is carried out in the reverse order.

STATE OF THE ART

From document DE 102009024816 A, a railing post for a temporary railing is known, which has two scissor-shaped jaws that must be actively opened and closed for connection. A pin is used to lock and secure the lower part of the scissor-shaped jaws. To ensure a form-fitting fit, the outer tube of the railing post must be moved vertically, then rotated and lowered again. Unlocking is done in the reverse order. A disadvantage of this temporary railing is that awkward vertical and horizontal movement is required when installing and removing the temporary railing. During assembly, it must also be ensured that the upper and lower scissor-shaped jaws are fully connected to and encompass the vertical frame or upright to be fixed.

EP 1338723 A2 discloses a device for mounting a temporary railing of a scaffold, in which the third lower connecting device is hooked onto existing railings and the second connecting device is connected to the railing upright by means of a U-shaped mounting unit with wedge unit.

Document EP 1571 275 A2 discloses a device for mounting a temporary guardrail post with connected telescopic guardrail posts on existing uprights of a scaffold according to the features of the preamble of claim 1. The guardrail post has clamps with an automatic clamping function, for which a continuous rotating shaft is used inside the guardrail post, which can be rotatably actuated by drive units and is connected to the clamps via a relatively complex mechanism. In order to connect the upright to the guardrail post, it must be actively opened and closed by rotating the control unit. To do this, the drive unit is rotated accordingly. The disadvantage of this solution is that a rotating movement must be actively performed when installing and removing the temporary guardrail. Furthermore, the internal mechanism is relatively complex and susceptible to damage. During assembly, it must also be ensured that the upper and lower clamps are fully connected and engaged in the upright frame or upright to be fixed.

Documents WO 2004/029382 A1 and JP 2005 188275 A disclose a railing post having the features of the preamble of claim 1.

DESCRIPTION OF THE INVENTION

Based on the aforementioned prior art, the present invention is based on the objective, or the respective technical problem, of providing a guardrail post for a temporary guardrail, which provides safe side protection on the next higher scaffold platform, which can be quickly and easily erected from the lower scaffold platform, which guarantees a durable and robust construction with permanently reliable functionality, and which can be manufactured economically. The present invention is also based on the objective, or the respective technical problem, of providing a scaffold with a temporary guardrail that guarantees high levels of safety and allows simple, rapid, and therefore economical assembly and disassembly of the temporary guardrail. The present invention is also based on the objective of providing a method for transferring a temporary guardrail from an existing scaffold platform to a scaffold platform yet to be erected above it, which guarantees quick and easy assembly and, at the same time, permanently reliable operation of the temporary guardrail.

The railing post according to the invention is given by the characteristics of independent claim 1. Advantageous configurations and improvements are the subject of claims 2 to 17, which depend directly or indirectly on independent claim 1.

The scaffolding according to the invention with temporary railing is given by the characteristics of claims 18 and 19.

The methods according to the invention for moving a temporary railing on a scaffold are given by the characteristics of claim 20.

The guardrail post according to the invention is accordingly characterized in that the movable form-fitting unit is directly connected to the rotary shaft, a spring element is present which acts on the movable form-fitting unit and holds it in the closed position under its sole action, the movable form-fitting unit is designed in its end face end region such that it first opens in the opening direction when pressure is applied to a vertical upright of the scaffolding and, once a predeterminable position/displacement of the vertical upright has been exceeded, i.e. when the maximum open position is reached, it moves into the closed position due to the effect of the spring force of the spring element and thus at least partially form-fits and securely locks the vertical upright. To release the connection, the upper or lower rotary drive devices are rotated in the rotational direction, such that the movable form-fitting unit moves in the opening direction or rotates in the rotational direction and releases the guardrail post.

A particularly advantageous development, which is designed in a particularly simple manner and guarantees permanently reliable function, is characterized by the fact that the elastic element is designed as a torsion spring.

In an advantageous embodiment, particularly simple assembly is ensured by the fact that the fixedly positioned push-fit unit is designed as a fork-shaped construction, in particular in a U-shape, which is open towards its free end region.

A particularly preferred development is characterized in that the form-fitting swivel unit is designed as a hook unit, which has an inclined end contour in its free end region. The inclined end contour advantageously ensures that an automatic connection process is possible in a simple manner, simply by pressing against the upright of the existing scaffolding, since the form-fitting swivel unit first expands by pressing against the upright and, when the open position is reached, returns or "snaps" into the closed position due to the spring element as the guardrail post continues to move, thereby securing the form-fitting guardrail post to the upright.

A particularly preferred embodiment with regard to permanently reliable functionality, which also ensures high connection reliability, is characterized by the fact that the fixed form-fitting unit and the rotary form-fitting unit have a partially circular inner contour, at least in some areas, which corresponds to the outer contour of the vertical axis, so that, viewed from above, in the closed position of the rotary form-fitting unit together with the fixed form-fitting unit, a completely or almost completely circular inner contour is created, which securely locks the inserted vertical axis by means of a form-fitting.

A particularly simple development in terms of design and offering a high degree of flexibility in defining the required connection geometries,

It guarantees positioning accuracy and is characterized by the fact that a stop unit is present on the railing post or on the fixed form-fitting unit, against which the rotating form-fitting unit stops in the closed position.

A particularly preferred and structurally simple design is characterized by the fact that the rotary form-fitting unit is connected to the rotary shaft via a connecting means which is guided within a groove in the railing post.

With regard to particularly simple assembly or disassembly of the railing post, an advantageous development is characterized by the upper rotary drive device being arranged below the first connecting device and/or the lower rotary drive device being arranged above the third connecting device. This means that the assembly personnel can easily access the rotary drive devices for the respective assembly process.

A particularly preferred embodiment, which ensures the functional safety of a temporary guardrail, is characterized in that the second connecting device is arranged within the guardrail post in such a way that, when the guardrail post is connected to the upright, it is arranged directly below a projecting component of the scaffolding, in particular a gusset plate, such that a displacement in the longitudinal direction is blocked.

An advantageous embodiment, which ensures the connection safety of the guardrail post, in particular when used as part of a known Allround scaffolding system by Layher® (registered trademark), is characterized in that the guardrail post has a safety stop unit located above the second connecting device protruding from the guardrail post, in particular in the transverse direction, located above the second connecting device, in particular in the transverse direction, which is arranged within the scaffold post in such a way that, when the guardrail post is connected to the vertical upright, it is arranged directly below a protruding component, in particular a rosette, of the vertical upright and blocks a displacement in the longitudinal direction.

A particularly preferred embodiment of the guardrail post according to the invention, which ensures particularly small distances from the inner edge of the temporary guardrail post to the outer edge of the decking or toeboard when viewed from above, with respect to the arrangement of the temporary guardrail post in the state in which the temporary guardrail is connected to the scaffolding, is characterized in that the first connecting device is designed as a cantilever device with two cantilever units spaced horizontally apart from one another. The first connecting device is characterized by an advantageous geometry due to the cantilever length of the first connecting device being so great that, when the guardrail post is connected to the upright, the connecting units are located next to the upright in its immediate vicinity or protrude from the upright into the interior of the scaffolding. This means, for example, that in a top view, a distance of less than or equal to 80 mm between the temporary guardrail and the toeboard is perfectly possible.

A particularly simple configuration regarding the connection of temporary railing uprights is characterized by the fact that the connection units each have a toggle pin.

An advantageous development, which ensures simple assembly or disassembly or a simple repositioning process of the temporary railing, is characterized in that the third connection device is designed as a cantilever device extending in the transverse direction with a first connection zone connected to the railing post or a second connection zone or a second connection zone connected to the first connection zone in the transverse direction, where the first connection zone has a downwardly oriented, in particular curved, cantilever unit, and/or the second connection zone has a recess open downwards in the longitudinal direction.

With regard to the security of the connection, a preferred configuration of the railing post according to the invention is characterized in that the second connection area has an outwardly open receiving unit with two legs arranged spaced apart from each other, in each of which the downwardly open recess is molded.

A particularly advantageous configuration of the railing post according to the invention, which can preferably be used with modular scaffolding, is characterized in that the cantilever unit is designed as a profile unit that is curved, in particular toward the railing post. The configuration as a curved profile unit ensures both simple assembly and disassembly by simply screwing or unscrewing the profile unit into/out of the recess of a rosette of the vertical upright. Once assembled, it provides protection against displacement in the longitudinal direction, since the curvature of the profile unit blocks upward lifting in the vertical (longitudinal) direction in the final vertical assembly position of the railing upright.

The railing post according to the invention ensures particularly simple assembly, disassembly, or repositioning of the temporary railing, as well as a functionally secure operation. The railing post allows for automatic securing of the temporary railing, so that it can only be actively released by actuating the rotary drive 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., the Layher Allround Scaffolding® (registered trademark) system) and facade scaffolding (e.g., the Layher SpeedyScaf® (registered trademark) system). The construction shown reliably prevents vertical and horizontal movement when the temporary railing is connected; however, the temporary railing can only be actively released by actuating the rotary drive devices.

A facade scaffold (e.g. Layher SpeedyScaf® (registered trademark)) with a temporary railing is described by the following characteristics:

scaffolding with a vertical frame with vertical uprights and with cross members which connect the vertical uprights in the transverse direction by means of a reinforcing plate and with guardrail uprights connected to the vertical uprights with a temporary guardrail connected to the guardrail upright described above, wherein the temporary telescopic guardrail uprights are connected to the first connecting device on both sides in each case, the third connecting device is connected to the vertical upright through its downwardly open recesses of the second connection area in the connection area of the existing guardrail uprights, the vertical upright runs through the open recess of the second connection area and the second connecting device is connected to the vertical upright directly below the reinforcing plate, thus blocking upward displacement in the longitudinal direction.

Modular scaffolding (e.g. Layher Allround® scaffolding (registered trademark)) is described by the following characteristics:

scaffolding with vertical uprights with rosettes with recesses connected in the longitudinal direction in a predetermined grid dimension and with transverse stiles that connect the vertical uprights in the transverse direction by means of a wedge-head connection to the rosettes and guardrail uprights connected to the rosettes of the vertical uprights with a temporary guardrail connected to the guardrail post described above, wherein each of the temporary telescopic guardrail uprights are connected to the first connecting device on both sides, the third connecting device is inserted into a recess of the rosette through its cantilever unit, which points downwards in the longitudinal direction and is curved in particular, and to which the existing guardrail uprights are connected, such that the displacement in the longitudinal direction is blocked by the safety stop unit or by the curved contour of the cantilever unit, the second connecting device is connected to the vertical upright.

The method according to the invention for moving a temporary railing on a facade scaffold or on a modular scaffold, with railing posts connected to vertical uprights as described above, from an existing secured scaffold platform to another scaffold platform to be erected and secured above it, is characterized by the following method steps:

• Turning the upper rotary drive device to release the locking of the connecting mechanism of the second upright connecting device,

• Tilting the railing post outwards,

• Lifting the railing post longitudinally to separate the third connecting device from the vertical upright,

• Additional elevation of the railing post in the longitudinal direction to reach the height of the existing railing post,

• Suspension of the third connection device at the height of the rosette with the existing railing uprights connected, by inserting the cantilevered unit into a recess in the rosette or at the height of the connection of the existing railing uprights, on the vertical upright by suspending the second connection area with the recesses in the existing railing uprights,

• Tilt the railing post in the direction of the vertical upright of the scaffold until it hits the rotating form-fitting unit of the second connecting device,

• Additional pressure on the railing post against the action of the spring element in the direction of the vertical upright, such that the rotatable form-fitting unit opens and the railing post is further displaced in the direction of the vertical upright and, when it reaches its vertical end position, i.e. the maximum opening position, the rotatable form-fitting unit automatically moves into the closed position due to the action of the spring element and, in its vertically aligned end position, encloses the railing post together with the fixed form-fitting adjustment unit, at least partially or almost completely, and thus securely locks it.

The inventive railing post shown provides a quick-to-assemble and robust railing post for a temporary railing. The post has a first design, comprising a second connecting device with a wedge-shaped or U-shaped tubular support for the upright. The second connecting device opens automatically via a simple mechanism (torsion spring engagement mechanism) when pressure is applied against the upright and closes immediately once the upright has reached its end position and is completely enclosed by the rotatable form-fitting unit. By simply rotating the rotary drive devices, the second connecting device with its rotatable form-fitting unit opens, and the railing post can be moved. An advantage is that the railing post is automatically secured, but the installer must actively unlock it via the drive device to move the temporary railing. This saves significant time during assembly, as screwing into the receiving or connecting devices, as was the case with the prior art, is no longer necessary, and fewer assembly steps are required than before. The form-fitting swivel unit is connected to the two rotating drive devices via the rotating shaft in the outer tube of the scaffold post, allowing the guardrail post to be secured and released at both drives, both at the top and bottom. The existing elastic element (torsion spring) ensures reliable locking of the guardrail post via the second connecting device in the upright.

The third connecting device at the bottom of the railing post is used for optimal mounting to the railing connection of a system mounting frame, for example a Layher SpeedyScaf® system (registered trademark), and/or to the rosette of a vertical stile, for example a Layher Allround Scaffolding® system (registered trademark). The third connecting device is easily fixed or hooked in and secured against shifting by precisely fitting recesses.

An alternative railing post according to the invention for modular scaffolding (Layher Allround® scaffolding (registered trademark)) has a third connecting device, in which there is only a first connecting zone, which has a curved profile unit at the bottom. The first and second connecting devices can be of any design and need only fulfill the desired functionality, i.e., the temporary railing uprights must be removably connectable to the first connecting device, and the second connecting device must be removably lockable to the upright.

Other embodiments and advantages of the invention are derived from the features also listed in the claims as well as from the exemplary embodiments given below. The features of the claims and exemplary embodiments can be combined with one another in any desired manner, provided that they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

The invention, as well as advantageous embodiments and improvements thereof, are described and explained in more detail below with reference to the examples shown in the drawing. The features apparent from the description and drawing can be used individually or with one another in any combination according to the invention. The following are shown:

Fig. 1 Perspective view of a first embodiment of a railing post for a temporary railing, suitable for use on a facade scaffolding, for example the Layher Blitz Gerüst® system (registered trademark), with a first connecting device, a second connecting device and a third connecting device and a rotary drive device for releasing the second connecting device,

Fig. 2 Perspective view of a second embodiment of a guardrail post for a temporary guardrail, suitable for use on a modular scaffolding, for example the Allround scaffolding system by Layher® (registered trademark), with a first connecting device, a second connecting device and a third connecting device and a rotary drive device for releasing the second connecting device,

Fig. 3 Schematic perspective view of a third connection device as shown in Figs. 1 and 2,

Fig. 4 Schematic detailed side view of the second connection device of the railing post according to Fig. 1 to a facade scaffolding,

Fig. 5 Schematic detailed view of the third connection device of a railing post according to Fig. 1 to a facade scaffolding,

Fig. 6 Schematic detailed view of the connection of the second connecting device of a railing post according to Fig. 2 to a modular scaffolding,

Fig. 7 Schematic detailed view of the connection of a third connection device of a railing post according to Fig. 2 to a modular scaffolding,

Fig. 8 Schematic perspective view of the second railing post connection device according to Figs.

1 and 2 in closed state, without connection to a vertical upright,

Fig. 9 Schematic perspective view of the second connecting device with rotary drive device in the open state,

Fig. 10 Schematic perspective view in detail of the second connection device in closed state, showing the stop unit and the connection to the rotary shaft,

Fig. 11 Schematic perspective view of a detailed section 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 connecting device of the railing post according to Fig. 1, Fig. 14 Schematic perspective view in detail of a first assembly state of the railing post according to Fig. 1 on a facade scaffolding,

Fig. 15 Schematic detailed perspective view of the connection of the railing post according to Fig. 1 to a facade scaffolding in the final assembled state,

Fig. 16 Schematic detailed perspective view of a scaffolding section of a facade scaffold in an intermediate assembly state,

Fig. 17 Schematic detailed perspective view of a facade scaffold with railing posts mounted according to Fig. 16 in the final state,

Fig. 18 Schematic perspective view of three scaffolding sections of a facade scaffold with temporary railings mounted,

Fig. 19 Schematic perspective view of three scaffold sections with a temporary guardrail mounted with scaffold platforms and frames already mounted on the upper scaffold platform,

Fig. 20 Schematic perspective view of a guardrail post connected to a vertical upright of a modular scaffold as shown in Fig. 2,

Fig. 21 Perspective view of a third embodiment of a guardrail post for a temporary guardrail, suitable for use in facade scaffolding, for example the SpeedyScaf® system by Layher (registered trademark), as well as for use in modular scaffolding, for example the Layher Allround Scaffolding® system (registered trademark), with a first connecting device, a second connecting device and a third connecting device and a rotary drive device for releasing the second connecting 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 cabinet, Fig. 24 Schematic detailed view of the connection of a third connection device of a railing post according to Fig. 21 to a modular scaffolding and

Fig. 25 Perspective view of a fourth embodiment of a guardrail post for a temporary guardrail, suitable for use on a modular scaffolding, for example the Allround scaffolding system by Layher® (registered trademark), with a first connecting device, a second connecting device and a third connecting device with a curved cantilever unit and a rotary drive device for releasing the second connecting device.

WAYS OF CARRYING OUT THE INVENTION

Fig. 1 shows a first example of a guardrail post 10.1 used as part of a temporary guardrail on facade scaffolding, such as the SpeedyScaf® system (registered trademark) from Layher. The guardrail post 10.1 is designed as a round tube. The longitudinal direction of the guardrail post 10.1 is indicated by the reference symbol L in Fig. 1, and the transverse direction perpendicular to the longitudinal direction L is indicated by the reference symbol Q in Fig. 1.

The railing post 10.1 has a first connecting device 12.1 in its upper end region at a certain distance from the end face, to which two temporary telescopic railing posts can be removably connected on both sides.

Directly below the first connecting device 12.1, an upper rotary drive device 22.1 designed as a rotary handle is arranged, which can rotate in the rotational direction D around the longitudinal direction L and is connected to a continuous, rotatably mounted shaft arranged internally in the railing post 10.1, which is not visible in Fig. 1. A section of the rotary shaft 18 can be seen in the illustration in Fig. 11.

A further first connecting device 12.1 is connected below the upper rotary drive device 22.1. The two first connecting units 12.1 advance forward in the transverse direction Q.

A third connecting device 16, which also projects in the transverse direction Q, is connected to the lower end region of the railing post 10.1 at a certain distance from the lower end face. Above the third connecting device 16 is a lower rotary drive device 22.2, which is designed as a rotary handle, swivelable in the direction of rotation D and connected to the rotary axis not shown in Fig. 1 (reference symbol 18 see Fig. 11).

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

Fig. 2 shows a second exemplary embodiment of a guardrail post 10.2, which is used as part of a temporary guardrail in a modular scaffolding system, in particular in an Allround scaffolding system by Layher® (registered trademark). This guardrail post 10.2 has essentially the same upper and lower rotary drive devices 22.1, 22.2, the same second connecting device 14, and the same third connecting device 16 as is also present in the guardrail post 10.1 as shown in Fig. 1. Identical components have the same reference symbol and are not explained further. One difference from the guardrail post 10.1 is that the first connecting device 12.2 is designed as a cantilever unit 76 with a pivot pin 74 for the detachable connection of the temporary telescopic guardrail posts. The other first connecting device 12.2 located below the upper rotary drive device 22.1 is also designed as a cantilever unit 76 with a pivot pin 74.

Finally, the railing post 10.2 also has a safety stop unit 32 connected which extends in the transverse direction Q between the first further connection device 12.2 and the second connection device 14.

The third connecting device 16 is shown in more detail in Fig. 3. On the railing posts 10.1 or 10.2, a first connecting region 34 is initially molded, which extends in the transverse direction Q and has a cantilever unit 38 pointing downwards. A second connecting region 36 extending in the transverse direction Q is connected to the first connecting region 34, which has a U-shaped receiving unit 48 with two legs as seen in a plan view, both legs having a U-shaped recess 40 open at the bottom.

The U-shaped receiving unit 48 has a semicircular inner contour at its receiving base.

The second connecting device 14 is shown in more detail in Figures 8 to 12. The second connecting device 14 has a fixed, form-fitting, push-fit unit 24, which is fixedly connected to the guardrail post 10.1, 10.2 and projects in the transverse direction Q, which has an outwardly open U-shaped recess 35 with protruding units 33 arranged on both sides, wherein the inner base of the U-shaped recess 35 has a semicircular 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 upright of a scaffold to be connected.

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

The form-fitting rotary unit 26 is designed in its front end region as a hook unit with a semicircular 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.

Between the fixed form-fitting unit 24 and the rotating form-fitting unit 26, an elastic element 28 is arranged, which is designed as a torsion spring and is connected to both form-fitting units 24, 26.

The maximum rotational movement D of the rotating form-fitting unit 26 is limited by the guide of the connecting device 44 in the groove 42. Furthermore, a stop unit 30 is molded into the fixed form-fitting unit 24, against which the rotating form-fitting unit 26 bears in the closed position, as shown in Fig. 8 and as a result of the action of the spring element 28. In the closed position, the inclined end contour 51 of the rotating form-fitting unit 26, together with the inner contour of a cantilever unit 33 of the first form-fitting unit 24, creates a V-shaped recess seen from above, into which the vertical handle of the scaffolding is initially positioned during assembly.

If a compressive force is applied to the inclined end contour 51 in the transverse direction Q in the direction of the guardrail post 10.1, 10.2, for example by pressing the second connecting device 14 against a vertical upright of a scaffolding, the rotary form-fitting device opens against the action of the spring element 28. As soon as the pressed-in vertical axis has reached the bottom of the U-shaped recess 35, i.e. the semicircular contour 35, the rotary form-fitting unit 26 is snapped back into the closed position by the effect of the spring element 28, whereby the inserted vertical axis is form-fittingly enclosed and securely locked in its inserted position.

Fig. 9 shows the form-fitting rotary unit 26 in the open position, which is achieved by rotating the rotary drive device 22.1 in the rotational direction D. In this position, the vertical handle can be separated from the second connecting device.

Fig. 4 shows in detail the connection of the second connecting device 14 of the railing post 10.1 to a facade scaffolding with a vertical upright 58.1, to which a crossbar 60.1 is connected via a reinforcement plate 64, into which the walking platforms on the scaffolding platforms are hooked when the scaffolding is erected. The second connecting device 14 is connected to the vertical upright 58.1 directly below the reinforcement plate 64, such that upward movement of the railing post 10.1 in the longitudinal direction L is prevented by the second connecting device 14 abutting against the reinforcement plate 64 at the bottom.

Fig. 5 shows the connection of the third connecting device 16 to the upright 58.1 of a facade scaffolding, which may be, for example, the well-known Layher SpeedyScaf® system (registered trademark). A guardrail box 78 is connected to the upright 58.1, to which the guardrail uprights 68 present in the scaffolding are in turn detachably connected. The third connecting device 16 is suspended with its second connecting region 36 through the U-shaped recess 40 from above on both sides into the connecting region of the guardrail uprights 68 present in the upright 58.1, whereby the upright 58.1 protrudes between the two ends of the U-shaped receiving unit 48 into contact with the semicircular inner contour of the base of the receiving unit 48.

Fig. 6 shows the connection of the second connecting device 14 to a vertical upright 58.2 of a modular scaffolding system. On the vertical upright 58.2, there are rosettes 66 with connection recesses in a predetermined grid in the longitudinal direction L. Such a modular scaffolding system can be, for example, the well-known Layher Allround Scaffolding® system (registered trademark).

The safety stop unit 32 is arranged such that it is located directly below a rosette 66, i.e. the railing post 10.2 can practically not be displaced upwards in the longitudinal direction L, since the safety stop unit 32 abuts against the rosette 66.

Fig. 7 shows the connection of the third connecting device 16 to the vertical shaft 58.2. The first connecting region 34 is suspended with its cantilever unit 28 pointing downwards in a recess in the rosette 66, and the vertical rod 58.2 extends through the U-shaped receiving unit 48.

Fig. 13 shows the first connection device 12.1 in more detail.

The first connecting device 12.1 is designed as a fork-shaped construction with two cantilever units 76 spaced apart and parallel to each other, each of which has in the region of its free end a connecting unit 72 with a pivot pin 74 for the detachable connection of a temporary telescopic guardrail to a temporary guardrail. The internal clearance A of the cantilever unit 76 is greater than the outer diameter of the vertical upright 58.1, 58.2 of the scaffold. In addition, the cantilever units 76 are connected to one another by an inwardly offset cross member 75.

The construction shown allows the connecting units 72 of the first connecting device 12.1 to be arranged significantly closer to the scaffolding or scaffolding platform when connecting the guardrail post 10.1, unlike known connecting devices in which the temporary guardrail is connected on the outside in front of the upright. This ensures that, once connected, the distance between the inner contour of the temporary guardrail 20 and the outer contour of the floorboard or a toeboard does not exceed permissible dimensions of 80 mm, for example, when viewed from above.

Figures 14 to 19 show the use of the guardrail post 10.1 as part of a temporary guardrail in different mounting positions on facade scaffolding such as the SpeedyScaf® system (registered trademark) by Layher. The facade scaffolding 50 has vertical frames 56 with vertical uprights 58.1 spaced apart and parallel to each other in the transverse direction, each of which is connected to a cross member 60.1 in the upper end region via a stiffener plate 64. A cross profile 70 connects the two vertical uprights 58.1 in the lower end region.

As shown in Fig. 14, the railing post 10.1 is initially hooked into the existing railing uprights 68 with its third connecting device 16 from above in the area of connection of the existing railing uprights 16 with the vertical upright 58.1 and is initially in an outwardly inclined position in which the second connecting device 14 rests with its form-fitting, rotatable unit 26 against the outer contour of the vertical upright 58.1. By further pressing the handrail post 10.1 in the direction of the vertical upright 58.1, the pivoting form-fitting unit 26 opens to the vertical end position of the handrail post 10.1 shown in Fig. 15. In this position, the pivoting form-fitting unit 26 engages in the closed position due to the action of the spring element, and the vertical rod 58.1 is positively enclosed by the second connecting device 14 and thus locked in place. Figs. 14 and 15 do not show the removable telescopic uprights of the temporary handrail.

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

Figures 16 to 19 show the use of the guardrail post 10.1 as part of a temporary guardrail with telescopic guardrail uprights 20 connected to the first two connecting devices 12.1 in different mounting positions on one scaffold section (Figures 16 to 19) and on three scaffold sections (Figures 18 and 19).

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

Fig. 18 shows the state of a temporary railing connected to three scaffold sections of scaffold 50 according to the assembly state of Fig. 17.

Fig. 19 shows a further stage in the progress of the erection, starting from the stage shown in Fig. 18. Thus, after the erection of the temporary guardrail according to Fig. 18, the linings 62 are hooked onto the cross members 60.1 of the upright frames 56 so that the erection personnel can access the upper scaffold level 52, while at the same time lateral protection is provided by the temporary guardrail with its guardrail posts 10.1 and the temporary guardrail posts 20. Then, as shown in Fig. 19, the upright frames 56 are fixed to the upright frames 56 of the lower scaffold platform 54, whereby the guardrail posts 10.1 are successively moved up to the height of the upper scaffold platform 53 as the erection progresses, such that lateral protection is provided for another scaffold platform to be erected.

Fig. 20 shows the connection of a guardrail post 10.2 to the upright 58.2 of a modular scaffolding system, for example the Allround scaffolding system by Layher® (registered trademark). The connection situation of the second connection device 14 shown in Fig. 20 corresponds to the detailed illustration in Fig. 6, and the connection situation of the third connection device 16 corresponds to the detailed illustration in Fig. 7.

The modular scaffolding consists of two vertical uprights 58.2 arranged at a certain distance in parallel to each other, with rosettes 66 with recesses arranged in a grid in the longitudinal direction L, which are connected to each other in the region of the upper and lower ends by means of cross members 60.2 through a wedge-head connection, wherein the longitudinal scaffolds 63 are connected to the rosettes 66 in the region of the upper and lower ends of the vertical upright 58.2 in the longitudinal direction of the scaffolding 50. In the central area, the uprights 68 of the existing guardrail are connected to the rosettes 66.

Fig. 21 shows a third embodiment of a railing post 10.3, which in principle has the same structural design 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 connecting device 16 - shown in more detail in Fig. 22 - differs from the third connecting device according to Fig. 3 in that a cantilever unit 38.1 is molded onto the first connecting region 34, which is directed downwards in the longitudinal direction L, and is designed as a curved profile unit, the curvature contour being configured such that the free end region of the cantilever unit 38.1 is curved towards the railing post 10.3. Identical components have the same reference symbol and are not explained further.

The guardrail post 10.3 has the advantage that it can be used with both facade scaffolding (Layher SpeedyScaf® (registered trademark) - system) and modular scaffolding (Layher Allround Scaffolding® (registered trademark) - system). Assembly or disassembly on a vertical upright 58.1, 58.2 of a scaffolding 50 is carried out in the same manner as described above for the guardrail posts 10.1 or 10.2.

When the railing post 10.3 is mounted on a vertical upright 58.1 with rosettes 66, the curved cantilever unit 38 is inserted into a recess in the rosette, the railing post 10.3 is then moved into the vertical position, and the second connecting device 14 is connected to the vertical upright 58.1. In this final mounted position, the railing post 10.3 is secured against lifting upwards in the longitudinal/vertical direction, since the curved cantilever unit 38.1 blocks the upward movement.

Lifting the railing post out of the rosette 66 is only possible if the second connecting device 14 is actively released and the railing post tilts accordingly, such that the curved contour of the cantilever unit can be moved out of the recess in the rosette.

A fourth embodiment of a guardrail post 10.4 is shown in Fig. 25, which basically has the same structure as the guardrail post 10.3 according to Fig. 21, but with the difference that there is no second connection zone 36 in the third connection device 16, but the latter only consists of the first connection zone 34 with a curved cantilever unit 38.1 molded into the lower part. Such a guardrail post 10.4 is suitable for connection to a vertical upright 58.2 of modular scaffolding (Allround scaffolding by Layher® (registered trademark)). The installation process is analogous to that described above.

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

An embodiment variant, not shown, relates to an alternative and structurally different design of the railing post 10.3, in which the first connecting device 12.2 and the second connecting device 14 shown in Fig. 25 are not used and the rotary drive devices 22.1 and 22.2 and the rotary shaft in relation to the second connecting device 14 are dispensed with. The design of the first and second connecting devices 12.2, 14 only has to be such that they fulfil the required functionality, i.e. that temporary railing uprights can be removably connected to the first connecting device 12.2 and that the second connecting device 14 can be removably connected to a vertical upright in a lockable manner.

Claims (20)

1. Guardrail post (10.1, 10.2, 10.3) for a scaffold (50) with scaffold platforms (52, 54) with vertical uprights (58.1, 58.2)/vertical frames (56) extending in the longitudinal (L)/vertical direction, cross members (60.1, 60.2), guardrail uprights (68) and linings (62), for the assembly of a so-called temporary guardrail, by means of which at least one temporary telescopic guardrail upright (20) can be mounted from an existing lower scaffold platform (54) to an upper scaffold platform (52) to be assembled above, with - a first connection device (12.1, 12.2), - a second connection device (14), - a third connection device (16), where - the first connecting device (12.1, 12.2) is arranged in the region of the upper end of the railing post (10.1, 10.2, 10.3), to which at least one temporary railing post (20) can be removably connected, - the third connection device (16) is arranged in the region of the lower end of the scaffold post (10.1, 10.2, 10.3), which can be removably connected to existing components of the scaffold (50), in particular to the upright (58.1) with connected railing uprights (68) or to a rosette (66) of the upright (58.2), - the second connecting device (14) is arranged at a certain distance in the longitudinal direction (L) above the third connecting device (16), which can be removably locked on the vertical upright (58.1, 58.2) of the scaffold (50), - a continuous rotating shaft (18) is arranged inside the railing post (10.1, 10.2, 10.3), - the rotating shaft (18) is connected to externally accessible rotating drive devices (22.1, 22.2), which are arranged in the region of the upper and/or lower ends of the railing post (10.1, 10.2) and are rotatable in a rotation direction (D), - the second connecting device (14) has a first form-fitting unit (24) fixedly connected to the railing post (10.1, 10.2, 10.3) and a rotatable form-fitting unit (26) connected above or below or within the fixed form-fitting unit (24), which can be moved from a closed position to a maximum open position and vice versa, wherein in the closed position a form-fitting of a railing post i (10.1, 10.2, 10.3) is provided in a vertical upright (58.1, 58.2) of the scaffold (50), -characterized because - the rotating form-fitting unit (26) is directly connected to the rotating shaft (18) so that it can rotate around the longitudinal axis (L) of the railing post (10.1, 10.2, 10.3), - there is an elastic element (28) which acts on the mobile form-fitting unit (26) and keeps it in the closed position under its sole action, - the form-fitting rotary unit (26) is configured in its front end region such that it initially opens in the opening direction when pressure is applied to a vertical rod (58.1, 58.2) of the scaffolding (50) and, after exceeding a predeterminable position/displacement of the vertical rod (58.1, 58.2), i.e. when the maximum open position is reached, it moves into the closed position by the effect of the spring force of the elastic element (28) and thus securely encloses and locks, at least partially, the vertical rod (58.1, 58.2) by form-fitting. 2. Railing post according to claim 1, -characterized because - the elastic element (28) is designed as a torsion spring. 3. Railing post according to claim 1 or 2, -characterized because - the fixed form-fitting unit (24) is designed as a fork construction, in particular U-shaped, which is open towards its free end region. 4. Railing post according to one or more of the preceding claims, -characterized because - the form-fitting rotary unit (26) is designed as a hook unit having an inclined end contour in its free end region (51). 5. Railing post according to claims 3 and 4, -characterized because - the fixed form-fitting unit (24) and the rotary form-fitting unit (26) have, at least in some areas, a partially circular internal contour which corresponds to the external contour of the vertical rod (58.1, 58.2), whereby, in a plan view, in the closed position of the rotary form-fitting unit (26) together with the fixed form-fitting unit (24), a complete or almost complete circular internal contour is produced which securely locks the inserted vertical rod (58.1, 58.2). 6. Railing post according to one or more of the preceding claims, -characterized because - a stop unit (30) is provided on the railing post (10.1, 10.2, 10.3) or on the fixed form-fitting unit (24), against which the rotating form-fitting unit (26) rests in the closed position. 7. Railing post according to one or more of the preceding claims, -characterized because - the rotating form-fitting unit (26) is connected to the rotating shaft (18) via a connecting means (29) which is guided into a groove (42) of the railing post (10.1, 10.2, 10.3). 8. Railing post according to one or more of the preceding claims, -characterized because - the upper rotary drive device (22.1) is arranged below the first connection device (12.1, 12.2). 9. Railing post according to one or more of the preceding claims, -characterized because - the lower rotary drive device (22.2) is arranged above the third connection device (16). 10. Railing post according to one or more of the preceding claims, -characterized because - the second connecting 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 upright (58.1), it is arranged directly below a projecting component of the scaffolding, in particular a reinforcing plate (64), such that the displacement in the longitudinal direction (L) is blocked. 11. Railing post according to one or more of the preceding claims, -characterized because - the railing post (10.2) has, above the second connecting device (14), a safety stop unit (32) which projects from the railing post (10.2), in particular in the transverse direction (Q), and which is arranged inside the scaffolding post (10.2) in such a way that, when the railing post (10.2) is connected to the vertical upright, it is arranged directly below a projecting component, in particular a rosette (66), of the vertical upright and blocks the displacement in the longitudinal direction (L). 12. Railing post according to one or more of the preceding claims, -characterized because - the first connecting device (12.1) is designed as a cantilever device with two horizontally spaced cantilever units (76), the free inner spacing of which (A) is greater than the outer diameter of the vertical upright (58.1) and in the end region of which there is in each case a connecting device (72) for the temporary telescopic railing upright (20). 13. Railing post according to claim 12, -characterized because - the cantilever length of the first connecting device (12.1) is so great that, when the railing post (10.1) is connected to the vertical upright (58.2), the connecting units (72) are each present next to the vertical upright (58.1) in its immediate proximity or protruding beyond the vertical upright (58.1) into the interior of the scaffold. 14. Railing post according to claim 12 or 13, -characterized because - the connection units (72) each have a rocker pin (74). 15. Railing post according to one or more of the preceding claims, -characterized because - the third connection device (16) is designed as a cantilever device extending in the transverse direction (Q) with - a first connection zone (34) connected to the railing post (10.1, 10.2, 10.3, 10.4) either - a second connection zone (36) either - a second connection zone (36) connected to the first connection zone (34) in the transverse direction (Q), - wherein the first connection zone (34) has a downwardly oriented, in particular curved, cantilever unit (38, 38.1), and/or the second connection zone (36) has a recess (40) open downwards in the longitudinal direction (L). 16. Railing post according to claim 15, -characterized because - the second connection area (36) has an outwardly open receiving unit (48) with two separate legs, in each of which the downwardly open recess (40) is molded. 17. Railing post according to claim 15 or 16, -characterized because - the cantilever unit (38.1) is designed as a profile unit curved in particular towards the railing post (10.1, 10.3). 18. Scaffolding (50) with a vertical frame (56) with vertical uprights (58.1) and with transverse beams (60.1) which connect the vertical uprights (58.1) in the transverse direction (Q) and connect them by means of a reinforcement plate (64), and with guardrail uprights (68) connected to the vertical uprights (58.1). - with a temporary railing connected to railing posts (10.1, 10.3) according to one or more of the preceding claims 1 to 17, - wherein the temporary telescopic uprights of the handrail (20) are connected to both sides of the first connection device (12.1), - the third connection device (16) is suspended on the existing railing uprights (68) through its downwardly open recesses (40) of the second connection area (36) in the connection area of the existing railing uprights (68) on the vertical upright (58.1), - the vertical rod (58.1) extends through the open recess (48) of the second connection zone (36), and - the second connecting device (14) is connected to the vertical rod (58.1) directly below the reinforcement plate (64), thus blocking upward movement in the longitudinal direction (L). 19. Scaffolding (50) with vertical uprights (58.2), with rosettes (66) with recesses connected in the longitudinal direction (L) in a predetermined grid dimension and with transverse beams (60.2) connecting the vertical uprights (58.2) in the transverse direction (Q) to the rosettes (66) by means of a wedge-head connection and guardrail uprights (68) connected to the rosettes (66) of the vertical uprights (58.2) - with a temporary railing connected to railing posts (10.2, 10.4) according to one or more of the preceding claims 1 to 17, - wherein the temporary telescopic railing posts (20) are connected on both sides to the first connection device (12.2), - the third connecting device (16) is inserted into a recess of the rosette (66) through its cantilever unit (38), which points downwards in the longitudinal direction (L) and in particular is curved, and to which the existing railing uprights (68) are connected, such that the movement in the longitudinal direction (L) is blocked by the safety stop unit (32) or by the curved contour of the cantilever unit (38), - the second connection device (14) is connected to the vertical axis (58.2). 20. Method for moving a temporary railing of a scaffold, in particular according to claim 18 or 19, with railing posts (10.1, 10.2, 10.3, 10.4) connected to vertical uprights (58.1, 58.2) according to one or more of claims 1 to 17 from an existing secured scaffold platform (54) to another scaffold platform (52) to be erected and secured above it, characterized by the following method steps: - Turn the upper rotary drive device (22.1) to release the lock of the second connecting device (14) of the vertical rod (58.1, 58.2), - Tilt the railing post outwards (10.1, 10.2, 10.3, 10.4), - Lift the railing post (10.1, 10.2, 10.3, 10.4) in the longitudinal direction (L) to release the third connecting device (16) from the vertical upright (58.1, 58.2), - Raise the railing post (10.1, 10.2, 10.3, 10.4) in the longitudinal direction (L) to the height of the existing railing post (68), - Hang the third connection device (16) at the level of the rosette (66) with the existing railing rails (68) connected, by inserting the cantilever unit (38) into a recess in the rosette (66), or at the level of the connection of the existing railing uprights (68) with the vertical upright (58.1) by hanging the second connection area (36) with the recesses (40) in the existing railing uprights (68), - Tilt the railing post (10.1, 10.2, 10.3, 10.4) in the direction of the vertical upright (58.1, 58.2) of the scaffold (50) until it hits the rotating form-fitting unit (26) of the second connecting device (14), - Continue pressing the railing post (10.1, 10.2, 10.3, 10.4) against the action of the spring element (28) in the direction of the vertical upright (58.1, 58.2), such that the rotatable form-fitting unit (26) opens and the railing post (10.1, 10.2, 10.3, 10.4) moves further in the direction of the vertical upright (58.1, 58.2). 2) and when it reaches its vertical end position, i.e. the maximum opening position, the rotatable form-fitting unit (26) is automatically moved into the closed position by the action of the spring element (28) and, in its vertically aligned end position, encloses the railing post (10.1, 10.2, 10.3, 10.4) together with the fixed form-fitting unit. (24) at least partially or almost completely by form-fitting and thus securely locks it.