EP3947850A1

EP3947850A1 - Railing device, namely a leading railing for a scaffold

Info

Publication number: EP3947850A1
Application number: EP20715667.0A
Authority: EP
Inventors: Wolf Christian BEHRBOHM
Original assignee: Wilhelm Layher Verwaltungs GmbH
Current assignee: Wilhelm Layher Verwaltungs GmbH
Priority date: 2019-03-25
Filing date: 2020-03-11
Publication date: 2022-02-09
Also published as: DE112020001502A5; DE102019002077A1; WO2020192812A1

Abstract

A railing device (40) for a scaffold (50), wherein the railing device (40) is designed as a so-called leading railing device which can be mounted from an existing lower scaffold level for an upper scaffold level to be mounted thereabove and which then forms an, in particular temporary, lateral protection for the upper scaffold level, comprising railing posts (10) and temporary railing members (20), wherein the railing posts (10) have a first connection device (12), which is arranged in the upper end region of the railing post (10), for releasably connecting one or two temporary railing members (20), characterized in that the first connection device (12) is designed in such a way that, with the railing device (40) connected to the scaffold (50), and as seen in a plan view, the spacing dimension (ZA) in the transverse direction of the inner edge (26), which points towards the scaffold (50), of the temporary railing member (20) from the outer edge (24) of the toe board or of the decking (62) of the scaffold (50) is less than or equal to a permissible spacing dimension which is 80 mm (millimetres).

Description

DESCRIPTION

Railing device, namely leading railing for scaffolding TECHNICAL FIELD

The present invention relates to a railing device for a scaffolding with scaffolding levels with vertical standards / vertical frames spaced apart in the width direction, cross bars connected in the transverse direction to the vertical standards / vertical frames, existing railing bars connected to the vertical standards / vertical frames in the width direction, decks connected to cross bars in the width direction and / or connected toe boards, the railing device being designed as a so-called leading railing device, which can be installed from an existing lower scaffolding level for an upper scaffolding level to be mounted above and which then forms a, in particular temporary, side protection for the upper scaffolding level, with guardrail posts and temporary railing posts, the railing posts each having a first connection device arranged in the upper end region of the railing post for the detachable connection of one or two temporary railing olme, and further connection devices for the detachable connection to the vertical post, in particular a second and third connection device.

As a rule, side protection with a handrail is only installed when the scaffolding erector is standing on the scaffolding level to be worked on. This is dangerous because the scaffold erector stands free at great heights without side protection and in the worst case can fall off the scaffolding. In order to increase safety, so-called leading railings are used, which guarantee side protection on the upper scaffolding level to be processed. Such leading railings usually consist of three or four individual components per scaffold bay, namely two identical railing posts that are connected to existing vertical posts of the scaffolding and to which at least one, in particular two telescopic railing bars are connected. The

Guardrail posts with the connected guardrails are assembled from the scaffolding level below and, due to their length, provide at least one-piece side protection in the next, upper scaffolding level. Depending on the progress of construction, a further railing post of the leading railing is always successively moved upwards into the railing device in order to secure the upper scaffolding level for further assembly work. The dismantling is done in reverse order.

STATE OF THE ART

From DE 102009024816 A is a railing post for a

leading railing known, which has two scissor-like claws that have to be actively opened and closed for connection. A pin is used to lock and secure the lower area of the scissor-like claws. To ensure a positive fit, the outer tube of the railing post must be moved vertically, then rotated and then lowered again. The unlocking takes place in reverse order. One disadvantage with this

Leading railing here is that when assembling and dismantling the leading railing an uncomfortable vertical as well

horizontal movement must be performed. In addition, it must be ensured during assembly that the upper and lower scissor-like claws are completely connected to the vertical frame or vertical post to be attached, and also these

enclose.

EP 1 338 723 A2 discloses a device for assembling a temporarily existing handrail of a scaffolding, in which the third The lower connection device is suspended from the existing handrail and the second connection device is connected to the handrail by means of a U-shaped receiving unit with a wedge unit.

EP 1 571 275 A2 discloses a device for assembling a temporarily existing handrail post with connected telescopic handrail rails on existing vertical posts of a scaffolding according to the features of the preamble of claim 1. The handrail post has claws with an automatic clamping function, with a continuous rotatable shaft inside of the railing post is used, which can be rotatably actuated via actuating units and is connected to the claws via a relatively complex mechanism. By rotating the actuating unit, the vertical post must be actively opened and closed to connect the railing post. To do this, the actuation unit is rotated accordingly. A disadvantage of this solution is that a rotary movement has to be actively carried out during assembly and disassembly of the leading railing. In addition, the internal mechanism is relatively complex and prone to damage. In addition, it must be ensured during assembly that the upper and lower claws are fully connected and locked into place on the vertical frame or vertical post to be attached.

In the case of the known leading railings, in the connected state the connection of the temporary railing posts to the railing post is arranged in the transverse direction in front of the vertical post of the scaffolding, so that, seen in a top view, there is a relatively large distance between the inner edge of the temporary railing post a toe board or covering of the scaffolding results, which is not optimal in terms of the required safety standards. DISCLOSURE OF THE INVENTION

Based on the stated prior art, the

The present invention is based on the object or the technical problem of specifying a railing device as a leading railing that provides secure side protection in the next upper one

Provides scaffolding shelves, can be quickly and easily assembled from the underlying scaffolding shelves, guarantees a durable and robust construction with permanently reliable functionality, can be manufactured economically and guarantees high safety standards.

The railing device according to the invention is given by the features of independent claim 1. Advantageous refinements and developments are the subject matter of the claims which are directly or indirectly dependent on independent claim 1.

The railing device according to the invention is accordingly characterized in that the first connection device is designed in such a way that when the railing rails are connected to the first connection device and when the railing post is connected to the vertical post, that is, when the railing device is connected to the scaffolding, the distance ZA in the transverse direction of the inner edge of the temporary guard rail facing the scaffolding to the outer edge of the toe board or the scaffolding covering is less than or equal to a permissible distance of 80 mm.

A particularly advantageous development is characterized in that the first connection device is designed as a projection device running in the transverse direction.

A particularly preferred embodiment of the railing device according to the invention, which enables simple structural implementation with regard to the required safety standards, is distinguished characterized in that the first connection device has transversely protruding, widthwise spaced apart projection units, in the end area of which there is a connection unit for a temporary handrail and whose clear inner distance is greater than the outer diameter of the vertical post.

A particularly advantageous development is characterized in that the length of the projection units in the transverse direction is designed so that the connection unit is arranged laterally offset from the vertical post, seen in a plan view, essentially at its height or beyond in the direction of the toe board / covering.

With the railing device according to the invention, the leading railing can be brought closer to the axis of a scaffolding field in the state connected to the scaffolding, so that it is possible that the distance from the inner edge of the telescopic railing rail to the scaffolding outer edge of the toe board or decking is not greater than 80 mm. This guarantees a high level of security.

Because the first connection device is spread out in two projection units with a connection unit for the handrail bars, it is possible without any problems to mount and dismantle the temporary handrail bars to be arranged on both sides independently of one another. In the prior art, the two handrail bars are connected to a connection unit of the first connection device in front of the vertical post, so that they are not assembled or disassembled independently of one another

can.

A particularly simple design is characterized in that the projection units run parallel at least in some areas. According to an advantageous embodiment, a particularly secure, quick-to-assemble or demountable connection option for the temporary handrail bars is implemented in that the first connection device / projection units each have a handrail receiving device, in particular a tilt pin.

It is particularly advantageous in terms of quick and easy assembly to make the temporary railing rails telescopic.

Further embodiments and advantages of the invention result from the features also listed in the claims and from the exemplary embodiments given below. The features of the claims and the exemplary embodiments can be combined with one another in any way, provided that they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

The invention and advantageous embodiments and developments thereof are described below with reference to the in FIG

Examples shown in the drawing are described and explained in more detail. The features to be taken from the description and the drawing can be used individually or collectively in any combination according to the invention. Show it:

Fig. 1 perspective view of a lower scaffolding field of a

Facade scaffolding, in particular a Layher Blitz Gerüst ^® (registered trademark), with a guardrail device already installed as a leading guardrail to secure the assembly work in the upper scaffolding level above, FIG. 2 is a perspective view of a railing post according to the railing device of FIG. 1 without connection of the temporary railing stiles,

3 perspective detailed representation of the first connection device of the railing post according to FIG. 1 without connection of the temporary railing stiles,

4 perspective detailed representation of a vertical frame with railing posts connected to the vertical post of a vertical frame without connection of the temporary railing bars,

Fig. 5 perspective view of three scaffolding fields in which one

The railing device according to FIG. 1 is already installed as side protection for the upper scaffolding level and the scaffolding decks with toe board and the vertical frame are already mounted in the upper scaffolding level above,

Fig. 6 Detailed plan view of the connection area of a

Railing device according to the preceding figures on a vertical post to represent the geometric positions of the components of the railing device in relation to the existing framework and

7 is a highly schematic, reduced, detailed top view of the

Connection area according to FIG. 6 with several scaffolding fields.

WAYS OF CARRYING OUT THE INVENTION

In the figures, an embodiment of a railing device 40 is shown as a leading railing, which is used for example on a facade scaffolding 50, for example the well-known Layher Blitz ^Gerüst® (registered trademark). The vertical longitudinal direction is indicated in the figures with the reference character L, the perpendicular this horizontally running width direction is with the

Reference symbol B and the transverse direction running horizontally perpendicular thereto is indicated by reference symbol Q.

The framework 50 has vertical frames 56 which are arranged spaced apart in the width direction B and each have two vertical posts 58 which are arranged spaced apart in the transverse direction Q and which are connected in their upper end region to crossbars 60 connected via gusset plates 64. In the lower end area, the vertical posts 58 are with a

Cross profile 70 connected.

1 shows a scaffolding field in a lower scaffolding tier 54, in which two vertical frames 56 are placed, to which existing railing bars 68 are connected via railing boxes 78 connected to the vertical post 58.

The railing device 40 has railing posts 10 which are each connected to a vertical post 58 via a second connection device 14 and third connection device 16. The railing posts 10 point in the connected state beyond the lower scaffolding level 54 in the longitudinal direction L upwards into the upper scaffolding level 52, wherein in the upper end area of the guardrail post 10 via a first connection device 12 temporary, telescopic guardrail bars 20 are connected, which provide side protection for the upper framework 52 form.

Fig. 2 shows a railing post 10 in perspective. The third connection device arranged in the lower end area is hooked into the connection area of the existing handrail bars 68 on the vertical post 58 from above during assembly. Then the

The railing post is pressed against the vertical post 58 with its second connection device 14 arranged on top of the third connection device 16. The second connection device 14 is designed as a claw device with a stationary receiving unit and a movable receiving unit. Opens when pressed the movable receiving unit and encloses the vertical stem 58 when it reaches its end position due to the action of a spring not shown in the figures. As a result, the railing post is securely locked on the secured vertical post 58. At the top

The end area is the first connection device 12 for connecting the temporary, telescopic handrail rails 20.

At a distance below the first connection device 12 there is a further first connection device 12 to which further temporary, telescopic handrail rails 20 can be connected.

Below the upper first connection device 12 and above the third connection device 16 are rotary actuation devices 22.1 and 22.2, which are connected to the second connection device 14 via a rotary shaft (not shown in the figures) that is rotatably mounted within the railing post 10, so that when performing a corresponding rotary movement D about the longitudinal axis L, the connection of the second connection device 14 with the vertical post 58 can be actively released again as soon as the railing post 10 has to be moved in order to provide side protection within the framework of a leading railing for the scaffolding to be mounted above put.

The longitudinal axis of the temporary, not shown in FIG

Railing rails 20 is indicated in FIG. 2 with the reference symbol BG and runs parallel to the width direction B. The first connection device 12 for connecting the temporary railing rails 20 is shown in more detail in FIG. 3, with no temporary railing rails being connected in the illustration according to FIG. 3 are.

The first connection device 12 is designed as a protrusion device protruding in the transverse direction Q, which is designed as a U-shaped or fork-shaped construction with two protrusion units 76 running in the transverse direction Q and horizontally spaced in the width direction B. The clear inner distance IA of FIG Projection units 76 is larger than the outer diameter DA of a vertical post 58. In the free end region of each projection unit 76 there is a connection unit 72 for connecting a temporary handrail spar 20, the connection device having a

having rotatable tilt pin 74.

FIG. 4 shows the connection of a railing post 10 to a vertical post 58 of a vertical frame 56 of a facade scaffolding 50 in an enlarged illustration.

Figs. 5 shows three bays of a facade scaffold, namely a Layher SpeedyScaf ^® (registered trademark) - system in which from the bottom scaffold level 54, a railing device 40 (voreilendes railings) post having attached to the vertical posts 58 railing 10 and the railing post 10 connected in

Width direction B extending temporary two railing bars 20. There are already hung on the crossbars 60 of the vertical frames 56 of the lower scaffolding levels 54 in width direction B running coverings 62 and on the vertical frames 56 of the lower

Scaffolding floor 54 already fitted with vertical frames 56 for the upper scaffolding floor 52. The leading railing 40 is already present as side protection in the upper scaffolding level 52 for the assembly work.

In a next assembly step, the railing device 40 is detached from the upper scaffolding level 52 from the vertical posts 58 of the lower scaffolding level 54 and offset upwards to the

Vertical posts 58 connected to the upper scaffolding tier 52 in order to ensure side protection for the next scaffolding tier to be assembled above the upper scaffolding tier 52.

Fig. 6 shows in detail in a plan view the geometric

Ratios of a connected to a vertical stick 58

Railing device 40 (leading railing) with railing post 10 and temporary railing rails 20. Due to the structural configuration of the first connection device 12 shown above their parallel spaced apart in the transverse direction Q

Projection units 76, it is possible to bring the connection units 72 for the temporary railing spars 20 closer to the scaffold 50, the connection units 72 each being arranged offset in width direction B outwards to the vertical post 58 in the illustrated embodiment. This makes it possible to mount both temporary railing bars 20 independently of one another on the connection unit 72. In contrast to the known railing devices for leading railings, the connection of the temporary railing rails 20 in the transverse direction Q is not arranged in front of the vertical post 58 but laterally offset to this in the direction of the scaffolding 50, so that it is possible to use the temporary railing rails when the railing rails are installed

To position railing device 10 (leading railing) closer to the axis of a scaffolding field.

As shown in Fig. 6, seen in a plan view

Inner edge 26 of the temporary railing spar 20 connected to the first connection device 12 to the outer edge 24 of a toe board 66 of the scaffolding 50 arranged on the outside of the covering 62 has a distance ZA that cannot be implemented with the known solutions. With regard to the required safety standard, this distance ZA should be kept as small as possible. With the railing device 40 according to the invention, it is possible due to the structural design of the first connection device 12 to implement spacing dimensions ZA in which the spacing is less than or equal to 80 mm. This makes the implementation higher

Security standards easily possible.

By appropriate structural extensions of the projection units 76 in the transverse direction, a significantly smaller spacing can also be implemented without any problems.

FIG. 7 shows in a greatly simplified detailed plan view the connection geometry of leading railings with railing posts 10 with first connection devices 12 and temporary railing spars 20 in the case of several scaffolding fields.

Claims

EXPECTATIONS

01. railing device (40) for a frame (50) with

Scaffolding levels (52, 54) with vertical standards (58) / vertical frames (56) spaced apart in the width direction (B), crossbars (60) connected to the vertical standards (58) / vertical frames (56) in the transverse direction (Q), to the vertical standards ( 58) / vertical frame (56) in the width direction (B) connected, existing handrails (60), decks (62) connected to crossbars (60) in the width direction (B) and / or on closed toe boards (66),

- The railing device (40) is designed as a so-called forward railing device, which can be mounted from an existing lower scaffolding level (52) for an upper scaffolding level (54) to be mounted above and which then provides a, in particular temporary, side protection for the forms upper scaffolding days (54),

- With railing posts (10) and temporary railing rails (20), the railing posts (10) each

- A first connection device (12) arranged in the upper end region of the railing post (10) for releasably connecting one or two temporary railing rails (20), and

- - have further connection devices (14, 16) for detachable connection to the vertical post (58), in particular a second connection device (14) and a third connection device (16),

- characterized in that

- The first connection device (12) is designed so that when the railing rails (20) are connected to the first connection device (12) and when the railing post (10) is connected to the vertical post (58), i.e. when the railing device is connected to the scaffold (50) (40), seen in a plan view, the distance ZA in the transverse direction (Q) the inner edge (26) of the temporary railing spar (20) facing the scaffolding (50) to the outer edge (24) of the toe board (66) or the covering (62) of the scaffolding (50) is less than or equal to a permissible distance, which is 80 mm (millimeters).

02. railing device according to claim 1,

- characterized in that

- The first connection device (12) is designed as a projection device extending in the transverse direction (Q).

03. Railing device according to claim 1 or 2,

- characterized in that

- The first connection device (12) has projecting units (76) in the transverse direction (Q), spaced apart in the width direction (B), in each of the end regions of which there is a connection unit (72) for a temporary handrail (20) and the clear inner distance ( IA) is larger than the outer diameter (DA) of the vertical stem (58).

04. Railing device according to claim 3,

- characterized in that

- The length of the projection units (76) in the transverse direction (Q) is designed so that the connection unit (72), seen in a plan view, is laterally offset from the vertical post (58) essentially at its height or beyond in the direction of the toe board (66) / Covering (62) is arranged.

05. Railing device according to claim 3 or 4,

- characterized in that

- The projection units (76) are designed to run parallel at least in some areas.

06. Railing device according to one or more of the

Claims 1 to 5,

- characterized in that

- the connection device (12) / the projection units (76) each have a railing receiving device, in particular a tilting pin (74).

07. Railing device according to one or more of the preceding claims,

- characterized in that

- The temporary handrail (20) is designed as a telescopic handrail.