EP1338723B1 - Mounting device for a temporary scaffolding safety rail - Google Patents

Abstract

The arrangement (10) for extending a required support element (22) from an existing scaffolding level (50) to a scaffolding level (52) yet to be erected take the form of struts (12) which are attachable to the front of the vertical members (26) of the scaffolding level (50), and are provided with connector devices (14, 16, 18, 20).

Description

TECHNICAL AREA

The present invention relates to a device for a scaffold with scaffoldings with vertical stems, bars, coverings and railing spars for mounting a temporarily required railing rail of an existing scaffolding for a yet to be created, about to be mounted scaffolding with at least two respectively connectable via connection means to a vertical stem connectable Railing supports and at least one telescopic temporary railing rail, which is connectable in each case in its respective end region via a first connection device in the upper end to the railing support, wherein the first terminal unit and thus the connected temporary railing spar at connected to the vertical stanchions rail supports at a predetermined height level based on the height level of a still to be mounted, overlying scaffolding days and the temporary railing spar a first formed as a hollow profile Hol m and a in / out of / the first spar einschiebbaren second leg.

Such devices are also called leading fuses or leading railings.

STATE OF THE ART

In the case of the well-known Layher Blitz and Layher Allround scaffolding systems, the individual scaffoldings are assembled from system components. The assembly process takes place from the bottom up. After each of the vertical stems or vertical frame, the bars, the coverings, the railing spars and possibly the diagonals are mounted per floor, the covering can be hung for the above to be mounted floor first. When the installer reaches the newly created floor, it must be ensured that already in this state certain security elements are present, which provide a stop for him. The above-mentioned scaffolding systems use leading guardrails. That is, when the fitter reaches the "new" floor, there are at least railing posts on which he can attach a railing rail. However, this railing must be mounted and dismounted at each level.

Scaffolding systems are known that use frames that replace railings and diagonals. After mounting such a frame, the upper horizontal bar already forms the railing for the still to be mounted scaffolding days. The frame construction itself is part of the framework. Another embodiment is known in which a frame is likewise used whose upper horizontal bar forms the leading railing. This frame is hung during installation in two already mounted railing spars and must then be added floor by floor to ensure an anticipatory railing. Both frame structures are relatively bulky, heavy and therefore expensive to assemble. In any case, several fitters must be used during assembly or disassembly.

In the JP 2001 288883 A a device for a scaffold of the type mentioned is disclosed. This device is also a leading railing, the one has telescopic railing. For the installation of the leading railing, first of all, bearing sliding units are to be mounted on an existing equipment position in the upper region of the vertical stems. Once a first floor level is mounted, the railing spars are inserted from above into the bearing slide units. In this condition, there is no railing on the upper floor. Then, after the telescopic handrail bars are inserted, the second scaffolding assembly is mounted and, again, bearing slide assemblies are mounted in the upper portion of the vertical struts. In the further course of assembly, the leading railing or its railing rods is released from the lower bearing slide unit and pushed upwardly through the bearing slide unit arranged above, until the end position of the handrail in the overlying scaffolding level, which is not yet mounted, is reached.

In the DE 299 02 904 U1 and DE 199 00 113 A1 are leading railings disclosed, however, have no telescopic railing rod.

PRESENTATION OF THE INVENTION

Based on the cited prior art, the present invention has the object or the technical problem of specifying a device of the type mentioned, which allows in a simple manner a mounting of a leading railing from an existing floor for a floor to create about it, which significantly reduces the assembly effort for providing the leading railing, which can be economically produced and which does not require that the assembly of the device, the previous series components for the scaffolding must be adjusted.

The invention is further the technical problem or the object of specifying a device of the type mentioned, which can be mounted and offset by a fitter.

The device according to the invention is given by the features of independent claim 1. Advantageous embodiments and further developments are the subject of the dependent claims.

The device according to the invention of the type mentioned is accordingly characterized in that the railing rail has a blocking device which prevents a complete pulling apart of the telescoping spars, wherein the second telescoping spar has a longitudinal groove continuous in the longitudinal direction, in the longitudinal groove in the inside inserted end portion a first projection unit is present, the first telescoping spar in its second spar facing the end portion in its wall has a continuous recess, a connectable to the first spar plug unit is present, which has a second projection unit, which is inserted through the recess of the first spar and on reaching the maximum extension length of the telescopic spars the first and second projection unit abut each other.

According to a particularly preferred embodiment, the telescopic length of the railing spar is selected so that the device can be used at different field lengths and over several field lengths of the scaffold system, preferably field lengths in the range between 2 to 4 m (meters), especially 2.07 to 3.07 m (meters), lies.

By providing a telescopic railing rail, the leading railing can be easily created by a fitter. For this purpose, the railing support is first moved from one level upwards on one side of the floor from the existing floor, wherein the railing rail is already connected to the first connection device and remains connected there during the entire assembly process. After moving the first railing support on the other side of the floor there existing railing post with attached railing rail is also offset by one floor up, which in the result in the overlying floor, which is still to be mounted from the scaffold system, already a railing rail with rail supports is present. When mounting a scaffold system thus the device is first mounted in the lowest floor, that is, on the left and right vertical handle each railing support is mounted with each connected handrail. This construction of two rail supports with attached railing spar is then offset in the course of creating the scaffold in the vertical direction each floor, ie a complex assembly or disassembly per floor is no longer required.

In order to prevent an unintentional complete pulling apart of the telescopic railing spar in its two spars, which could occur in particular during disassembly, the blocking unit is present, which prevents a complete pulling apart of the telescopic spars, wherein the second telescoping spar has a longitudinally extending longitudinal groove in which a first projection unit is present in the longitudinal groove in the inside inserted end region, the first telescopic spar has a continuous one in its wall Has recess, a connectable to the first spar plug unit is present, which has a second projection unit which is inserted through the recess of the first spar and strike the first and second projection unit when reaching the maximum extension length of the telescopic spars.

The plug-in unit can be designed as a spring plug in a simple manner.

The first and / or second projection unit are preferably formed as a rivet, which ensures an economical manufacturing method.

A preferred embodiment is characterized in that the second spar has a corrugation on the outside.

In order to support a problem-free extraction or insertion process of the spars, or to minimize the force to be expended in the operations mentioned, a particularly preferred embodiment is characterized in that the second spar in at least one end region, in particular in both end regions, via a sliding bearing unit is mounted on the first spar.

A particularly well-proven in practice embodiment variant is characterized in that in the introduced in the first spar end portion of the second spar, the sliding bearing unit is formed as connected to the second spar plug whose outer wall partially abuts the inner wall of the first spar.

To ensure optimum sliding properties during the assembly process, a particularly advantageous Further development characterized in that the sliding bearing unit is formed as connected to the first spar guide cap with inwardly facing bearing surfaces on the lying in the direction of withdrawal end portion of the first spar, which bear against the outer wall of the second spar.

As material for the sliding bearing unit, any material can be used which has a low sliding friction coefficient.

Due to the telescopic length of the temporary railing rail, it is easily possible to easily use the "leading railing" for different field lengths and also over several field lengths of the scaffolding systems. The assembly or disassembly by a fitter is easily possible.

The device according to the invention of the type mentioned above is accordingly characterized by a railing support connectable on the front side to a vertical post of the existing scaffolding with a first connecting device, a second connecting device, a third connecting device, a fourth connecting device, wherein the first connecting device is arranged in the upper end region of the scaffold support and for connecting the temporary railing rail, the fourth connection device is arranged in the lower end region of the railing support, the third connection device is designed so that in the region of the connection of the mounted railing rail to the mounted vertical stem of the existing floor can be detachably connected or mounted or mounted and the distance between the third connection device and the first connection device is selected such that the temporary railing rail joins connected third terminal device is located at a predetermined height level with respect to the still to be created Gerüstage, the second connection device between the first and third connection device is positioned so that it can be detachably connected in the upper part of the mounted vertical stem of the existing equipment days.

Due to the structural design and positioning of the connection units, a simple installation of a leading railing can be easily implemented without the need for a change in the design of the existing series frame components. The device is possible without changing the construction in known scaffolding systems (for example Layher flash and Layher Allround scaffolding system).

A particularly preferred embodiment is characterized in that the first connection device has a projection unit with tilting pin arranged essentially perpendicular to the longitudinal direction of the framework support and the temporary railing spar has a continuous recess in its end region such that the railing spar can be pushed onto the projection unit and the tilting pin secures the connection of the railing rail under the effect of its own weight.

A further advantageous embodiment, which ensures an extremely simple assembly, characterized by in that the second connection device has two projecting flange elements or a U-profile unit which can be pushed onto the mounted vertical handle with protruding flange elements and the projecting flange elements each have a continuous recess and the detachable connection to the vertical handle is possible by inserting a wedge into the recesses.

A structurally particularly simple implementation of the third connection device is given by the fact that the third connection device has one, in particular two, parallel spaced tabs, which preferably each have a first, obliquely downwardly pointing tab region and a second adjoining tab region. In the case of the Layher flash scaffold system, the straps can be hooked there in a simple manner in the area of the connection of the existing railing spar. When connected to the Layher Allround Scaffolding System, the tabs are easily attached to the rosettes of the vertical stems in this scaffold system. As a result, the geometric position of the vertical support is clearly defined in each scaffolding system.

A particularly preferred embodiment, which ensures easy handling and reliable fixation during assembly, is characterized in that the second connection unit has a projection unit which engages behind the mounted vertical stem with a Hintergreifungsbereich partially, and in Hintergreifungsbereich a downwardly open slot is present which can be plugged onto a gusset plate present on the mounted scaffold, wherein a preferred embodiment is characterized in that the behind gripping area essentially has a partial circle cross section.

A particularly advantageous embodiment in practice is characterized in that the third connection device has one, in particular two parallel spaced flaps with obliquely downwardly pointing tab regions, wherein the connection device is designed so that the railing support when connecting under the sole effect of its own weight vertical mounting position occupies.

A structurally particularly simple implementation of the fourth connection unit is characterized in that it is designed as a projection unit, in particular as a hollow profile unit, whose free front end region rests in the mounted state of the railing support at least partially on the outside of the mounted vertical stem.

A particularly preferred alternative embodiment, which ensures a reliable positioning during the assembly process in a simple manner, is characterized in that the fourth connection device has two spaced abutment protrusions which in the mounted state in each case bear against the mounted framework in the connection region in the assembled state, thereby preventing rotation form.

With regard to a particularly economical production of the device according to the invention, it is particularly advantageous to form the third connection device and the second connection device in one piece. In this case, a particularly preferred embodiment shows very large assembly-technical advantages, which are characterized in that the third connection device and / or the fourth connection device have a Anlagequerschnittskonturbereich which partially abuts in the assembled state on the outer contour of the mounted vertical stem form-fitting manner.

Another particularly advantageous embodiment of the device according to the invention, which is preferably used on the known Layher Allround scaffold system, in the vertical stems of the scaffold system in the longitudinal direction in a predetermined grid connection rosettes with recesses, and which forms an independent variant is characterized by a front side railing post connectable to a vertical post of the existing scaffolding with a first connecting device, a second connecting device, a third connecting device, the first connecting device is arranged in the upper end region of the scaffold support and serves to connect the temporary railing spar, the third connecting device is arranged in the lower end region of the railing support, the second connection device can be pushed onto the connecting rosette and can be detachably connected to the wedge head by means of a wedge, the third connecting device formed as a projection device with downwardly pointing pin, which is insertable into a recess of a connection rosette, wherein the distance between the second and third connection device corresponds to the grid dimension of the rosettes and the distance between the second connection device and the first connection device is selected so that the temporary railing rail is connected to the third connection device at a predetermined height level with respect to the still to be created equipment days.

With such a device, it is easily possible to create an anticipatory railing without changing the underlying Layher Allround scaffolding system, which can be easily assembled or disassembled.

A preferred embodiment is characterized in that the wedge is captively connected to the wedge head.

An alternative embodiment, which ensures a particularly simple handling during assembly or disassembly for the assembly staff, is characterized in that the wedge is arranged longitudinally displaceable on the railing support. In this case, the safety during assembly or disassembly of the "leading railing" according to a particularly preferred embodiment is increased by the fact that a connected to the wedge longitudinal displacement unit is provided, which is designed so that they are detected by a person standing on the scaffolding field to be mounted can.

Further embodiments and advantages of the invention will become apparent from the features further listed in the claims as well as by the embodiments given below. The features of the claims may be combined in any manner as far as they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1

schematischer Ausschnitt aus einer Perspektivansicht eines Gerüstes mit einem voreilenden Geländer bestehend aus zwei Gerüststielen und einem dazwischen angeordneten, teleskopierbaren Geländerholm, wobei die Geländerstütze vier Anschlusseinrichtungen aufweist,

Fig. 2

schematische Seitenansicht eines Geländerholms gemäß Fig. 1,

Fig. 3

schematische Längsansicht des Geländerholms gemäß Fig. 2,

Fig. 4

schematische Darstellung der dritten Anschlusseinrichtung gemäß Detail A in Fig. 2,

Fig. 5

schematischer Schnitt durch die Geländerstütze gemäß Schnittführung B-B in Fig. 2,

Fig. 6

schematische Darstellung der vierten Anschlusseinrichtung gemäß Detail B in Fig. 2,

Fig. 7

schematischer Schnitt durch die Geländerstütze gemäß Schnittführung A-A in Fig. 2,

Fig. 8

schematischer Schnitt durch die Gerüststütze gemäß Fig. 2 entlang Schnittführung C-C,

Fig. 9

schematische Seitenansicht des Details D der Geländerstütze gemäß Fig. 2,

Fig. 10

schematische Ansicht des Details D rechtwinklig zur Ansicht gemäß Fig. 9,

Fig. 11

schematische Seitenansicht des teleskopierbaren Geländerholms gemäß Fig. 1,

Fig. 12

schematische Ansicht des Details Z des Geländerholms gemäß Fig. 11, teilweise im geschnittenen Zustand,

Fig. 13

schematische Detailansicht des Geländerholms gemäß Fig. 11 in Pfeilrichtung F,

Fig. 14

schematischer Schnitt gemäß Schnittführung D-D in Fig. 12, wobei nur der eingeschobene Geländerholm dargestellt ist,

Fig. 15

schematische Detailansicht des Geländerholms gemäß Fig. 11 gemäß Detail X,

Fig. 16

schematische Detailansicht mit teilweiser Schnittführung des Geländerholms gemäß Fig. 11 gemäß Detail Y,

Fig. 17

schematische Detailansicht des äußeren Geländerholms gemäß Fig. 11 in Pfeilrichtung E,

Fig. 18

schematische Längsansicht einer Steckeinheit mit Vorsprungeinheit,

Fig. 19

schematische Seitenansicht der Steckeinheit gemäß Fig. 18,

Fig. 20

schematische Seitenansicht im Bereich der dritten und vierten Anschlusseinrichtung bei Montage an einem Layher-Allround-Gerüstsystem,

Fig. 21

schematische Seitenansicht im Bereich der dritten und vierten Anschlusseinrichtung bei Montage an einem Layher-Blitz-Gerüstsystem,

Fig. 22

schematische Seitenansicht des Endbereichs des eingesteckten Geländerholms mit aufgesetztem Teflonstopfen,

Fig. 23

schematische Seitenansicht eines zweiten Ausführungsbeispiels einer Geländerstütze, insbesondere geeignet für das bekannte Layher-Blitz-Gerüstsystem,

Fig. 24

schematische Drauf-, Seiten- und Längsansicht des Details K gemäß Fig. 23,

Fig. 25

schematische Drauf-, Seiten- und Längsansicht des Details L gemäß Fig. 23,

Fig. 26

schematische Drauf-, Seiten- und Längsansicht des Details M gemäß Fig. 23,

Fig. 27

schematische Detailperspektive des Details L im am Gerüst angeschlossenen Zustand,

Fig. 28

schematische Detailperspektive des Details M im am Gerüst angeschlossenen Zustand,

Fig. 29

schematische Ansicht eines dritten Ausführungsbeispiels einer Geländerstütze, insbesondere geeignet für das Layher-Allround-Gerüstsystem,

Fig. 30

schematische Drauf-, Seiten- und Längsansicht des Details P gemäß Fig. 23,

Fig. 31

schematische Drauf-, Seiten- und Längsansicht des Details O gemäß Fig. 23,

Fig. 32

schematische Drauf-, Seiten- und Längsansicht des Details N gemäß Fig. 23,

Fig. 33

schematische Ansicht eines vierten Ausführungsbeispiels einer Geländerstütze, insbesondere geeignet für das Layher-Allround-Gerüstsystem,

Fig. 34

schematische Drauf-, Seiten- und Längsansicht des Details S gemäß Fig. 23,

Fig. 35

schematische Drauf-, Seiten- und Längsansicht des Details R gemäß Fig. 23,

Fig. 36

schematische Drauf-, Seiten- und Längsansicht des Details Q gemäß Fig. 23,

Fig. 37

a) bis e) schematische Detailansicht eines Gerüstausschnittes in einzelnen Montagezuständen unter Einsatz eines vorauseilenden Geländers,

Fig. 38

schematische Seitenansicht des Details E gemäß Fig. 11 mit einer zusätzlichen Gleitlagereinheit,

Fig. 39

schematische Detailperspektivausschnitt aus einem bekannten Layher-Allround-Gerüstsystem unter Einsatz eines vorauseilenden Geländers in einem Montagezwischenzustand und

Fig. 40

schematische Detailperspektivausschnitt aus einem bekannten Layher-Blitz-Gerüstsystem unter Einsatz eines vorauseilenden Geländers in einem Montagezwischenzustand.

The invention and advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawing and explained. The features to be taken from the description and the drawing can be applied individually according to the invention or to a plurality of them in any desired combination. Show it:

Fig. 1

schematic section from a perspective view a scaffolding with a leading railing consisting of two scaffolding posts and a telescoping railing spar arranged therebetween, the railing support having four connecting devices,

Fig. 2

schematic side view of a railing rail according to Fig. 1 .

Fig. 3

schematic longitudinal view of the railing spar according to Fig. 2 .

Fig. 4

schematic representation of the third connection device according to detail A in Fig. 2 .

Fig. 5

schematic section through the railing support according to cutting guide BB in Fig. 2 .

Fig. 6

schematic representation of the fourth connection device according to detail B in Fig. 2 .

Fig. 7

schematic section through the railing support according to section AA in Fig. 2 .

Fig. 8

schematic section through the scaffolding support according to Fig. 2 along cutting CC,

Fig. 9

schematic side view of the detail D of the railing support according to Fig. 2 .

Fig. 10

schematic view of the detail D perpendicular to the view according to Fig. 9 .

Fig. 11

schematic side view of the telescopic Railing according to Fig. 1 .

Fig. 12

schematic view of the detail Z of the railing according to Fig. 11 partially cut,

Fig. 13

schematic detail view of the railing spar according to Fig. 11 in the direction of the arrow F,

Fig. 14

schematic section according to cut DD in Fig. 12 , where only the inserted railing spar is shown,

Fig. 15

schematic detail view of the railing spar according to Fig. 11 according to detail X,

Fig. 16

schematic detail view with partial cut of the railing rail according to Fig. 11 according to detail Y,

Fig. 17

schematic detail view of the outer railing rail according to Fig. 11 in the direction of the arrow E,

Fig. 18

schematic longitudinal view of a plug-in unit with projection unit,

Fig. 19

schematic side view of the plug-in unit according to Fig. 18 .

Fig. 20

schematic side view in the region of the third and fourth connection device when mounted on a Layher Allround scaffolding system,

Fig. 21

schematic side view in the area of the third and fourth connection device when mounted on a Layher flash scaffold system,

Fig. 22

schematic side view of the end portion of the inserted railing spar with attached Teflon plug,

Fig. 23

schematic side view of a second embodiment of a railing support, in particular suitable for the known Layher flash scaffold system,

Fig. 24

schematic top, side and longitudinal view of the detail K according to Fig. 23 .

Fig. 25

schematic top, side and longitudinal view of the detail L according to Fig. 23 .

Fig. 26

schematic top, side and longitudinal view of the detail M according to Fig. 23 .

Fig. 27

schematic detail perspective of the detail L in the condition connected to the scaffolding,

Fig. 28

schematic detail perspective of the detail M in the state connected to the scaffold,

Fig. 29

schematic view of a third embodiment of a railing support, in particular suitable for the Layher Allround scaffolding system,

Fig. 30

schematic top, side and longitudinal view of the detail P according to Fig. 23 .

Fig. 31

schematic top, side and longitudinal view of the detail O according to Fig. 23 .

Fig. 32

schematic top, side and longitudinal view of the detail N according to Fig. 23 .

Fig. 33

schematic view of a fourth embodiment of a railing support, in particular suitable for the Layher Allround scaffolding system,

Fig. 34

schematic top, side and longitudinal view of the detail S according to Fig. 23 .

Fig. 35

schematic top, side and longitudinal view of the detail R according to Fig. 23 .

Fig. 36

schematic top, side and longitudinal view of the detail Q according to Fig. 23 .

Fig. 37

a) to e) schematic detail view of a framework cutout in individual assembly states using a leading railing,

Fig. 38

schematic side view of the detail E according to Fig. 11 with an additional sliding bearing unit,

Fig. 39

schematic detail perspective detail of a known Layher Allround scaffolding system using a leading railing in an intermediate assembly state and

Fig. 40

schematic detailed perspective detail of a known Layher flash scaffold system using a leading railing in a mounting intermediate state.

WAYS FOR CARRYING OUT THE INVENTION

In Fig. 1 schematically a section of a scaffold in a perspective view is shown, in which already two scaffoldings 49, 50 are already mounted. Each scaffolding days 49, 50 of the field length L1 is composed of system scaffolding components, namely from each left and right vertical stems 26 or vertical frame, an interposed, connected to the vertical stems 26 left and right railing rail 24, not shown longitudinal bars and one between each two Handrail stalks 26 vertical to the leaf level of FIG. 1 arranged cross members hinged bottom pad 54.

Once the in FIG. 1 second floor 50 is mounted, an upper decking 56 is connected and the next floor 52 to be created can be mounted. In this state, no security elements are initially present on the scaffolding 52 to be created.

These fuse elements are replaced by a in FIG. 1 illustrated device 10 is provided, which made of two railing supports 12 which are connectable to the respective already mounted vertical handle 26, and a telescoping railing rail 22 arranged therebetween available.

For clarity, the in FIG. 1 Right hand rail support 12 turned 90 ° (old) to the right and the in FIG. 1 Left existing railing support 12 rotated by 90 ° (old) to the left, that is, in practice, the railing supports 12 are in the view according to FIG. 1 immediately before the vertical stems 26, that is, on the side facing the viewer of the vertical stems 26th

The assembly of the device 10 or its floor-wise repositioning during the assembly progress becomes described below.

The in the FIGS. 2 and 3 The railing support 12 has a first, second, third and fourth connection device 14, 16, 18, 20 extending from top to bottom. The first connection device 14 serves to connect the railing rail 22. The second, third and fourth connection device 16, 18, 20 serves for connection to the already mounted vertical rail of a scaffold assembly 50.

The arranged in the upper end portion first terminal device 14 is in the FIGS. 9 and 10 shown in more detail. In the upper end region of the round tube 13, a press-fit piece 28 is pressed into the round tube 13, which has an upwardly extending flat portion 29, to which a tab 36 is connected. Perpendicular to the tab 36 and the longitudinal direction of the round tube 13, a projection unit 30 is formed, at the free end portion of a rotatable tilting pin 32 is connected, which is transverse to the projection unit 30 under the action of its own weight.

A simple connection of a telescopic railing rail 22 is ensured by the fact that in each case in its end according to FIG. 11 a press-fitted end piece 38 which also terminates in a flat portion 39, wherein in the flat portion 39, a through recess 34 is arranged, whose inner diameter is selected so that the railing rail 22 can be pushed onto the projection unit 30. After pushing the tilting pin 32 locks the connection position of the railing rail 22 automatically.

The second connection device 16 is in FIG. 8 closer shown. About an extension member 41 is perpendicular to the longitudinal axis of the round tube 13, a U-profile unit 40 is connected, which can be pushed onto the vertical handle 26, wherein the flange members 42 of the U-profile unit 40 are projecting beyond the vertical stem 26 in the deferred state and outstanding in this A slot-shaped recess 44 is provided in each case in the region of the flange elements 42, such that a wedge 46 can be driven into the recesses 44, so that a clamping connection between the U-profile unit 40 and the vertical shaft 26 is achieved. The distance A1 of the longitudinal axis of the round tube 13 and the longitudinal axis of the vertical stem 26 is in FIG. 8 with A1 specified. It is dimensioned such that, taking into account the formation of the third and fourth terminal units 18, 20, which are described below, the railing support 12 can be connected substantially parallel to the vertical post 26.

The in the FIGS. 4 and 5 illustrated third connection unit 18 has two externally connected to the round tube 13, parallel spaced tabs 60, which has a first, obliquely downward, that is to the vertical stem 26 extending tab portion 62 and a parallel to the round tube 13 extending second tab portion 64. Approximately in the middle of the first strap portion 62, a stiffening web plate 68 is welded. The inside clearance of the tab 60 is only slightly larger than the outer diameter of the vertical stem 26th

The fourth connection device 20 is in the FIGS. 6 and 7 shown. The fourth connection device 20 is designed as a projection unit 21 (spacer tube) connected at right angles to the longitudinal axis of the round tube 13, the length L of the spacer tube being dimensioned in this way is that the free end face of the spacer tube in the mounted state of the railing support 12 partially abuts the outside of the vertical stem 26.

The height level of the railing support 12 when connected to the vertical post 26 support 12 and thus the height level H of the temporary railing rail 22 is determined by the position of the third terminal device 18. Namely, the third connection device 18 is connected to the mounted vertical post 26 in the region of the connection of the mounted railing rail 24. This position is specified in the respective scaffolding system. Depending on the arrangement of the third connection device 18, the second connection device is arranged in the longitudinal direction of the railing support 12 at a distance A2 (FIG. FIG. 2 ), which ensures that the second connection means 16 below the upper pad 56 (see FIG. 1 ) can be connected to the vertical stem 26 of the existing scaffolding 50 days. Likewise, the distance A3 of the fourth connection device 20 to the third connection device 18 is determined by the fact that the fourth connection device 20 comes to rest below the already mounted railing rail 24 with the vertical shaft 26.

The distance A4 of the first connection device 14 to the third connection device 18 is selected so that the railing rail 22 as part of the leading railing with mounted railing support 12 in a height level H (see FIG. 1 ) is disposed above the upper deck 56, which complies with the safety regulations.

The connection of the third connection device 18 in the known Layher Allround scaffolding system is in FIG. 20 shown schematically. The connection of the railing rail 24 of a fully assembled floor 50 to the vertical handle 26th takes place by means of the known Keilschlosstechnik. In the front end region of the railing Holmes 24 a wedge head 87 is connected, which has a slot open towards the front, which can be pushed onto a connected to the vertical stem 26 rosette 86. The rosette 86 has through recesses, which can be brought into coincidence with a vertical recess arranged on the wedge head to the slot, so that the connection / connection can be made by striking a wedge 88. How out FIG. 20 can be seen, the third connection device 18 is connected such that the second tab portion 64 is mounted on the upper side inside on the rosette 86 with its lower front end. At the same time, the front outer side of the fourth connection device 20 bears against the vertical stem 26 on the outside. If the second connection device 16 is not yet connected, the railing support 12 can still be tilted slightly forward, until the second tab region 64 abuts the wedge head 87, which facilitates mounting during insertion or removal.

The connection situation of the third connection device 18 in the context of the known Layher flash scaffold is in FIG. 21 shown schematically. In this system scaffold, the framework spars 24 are suspended via a downwardly facing projection unit 48 in existing on the vertical handle 26 shoulder bags 40. How out FIG. 21 it can be seen that the geometry of the third connection device 18 with respect to the first tab portion 62 and second tab portion 64 formed so that the second tab portion 64 engages behind the already mounted region of the railing rail 24, that is in the example abuts the projection unit 48, and therefore a simple Suspension construction is implemented.

The construction of the telescopic temporary Railing 22 is in the FIGS. 11 to 17 shown schematically.

The railing rail 22 has a first spar 70, which is designed as a round tube profile. In this first spar 70, a second spar 72 can be switched on or pushed out, which is also provided as a round tube profile with an outer circumferential ribbing in the longitudinal direction.

In order to prevent complete removal of the second spar 72 from the first spar 70, a blocking unit is provided, which will be described below. First, the second spar 72 has a longitudinally extending groove 74. In the insertion-side end region of the groove 74, a first projection unit 76 is attached, which is formed as a rivet. At the same time, the first spar 70 has in its Einsteckendbereich in the wall a continuous recess 78. After the second spar 72 is inserted into the first spar 70 in the manufacture of the railing spar 22, a plug-in unit 80 is used, which is designed as an elastic spring plug-in unit, having a part-circular peripheral contour and thereby can be plugged under expansion on the second spar 70. At the same time, the plug-in unit 80 has an inwardly directed projection unit 82, which can be guided through the recess 78. The length of the second projection unit 82 is dimensioned so that it projects into the interior of the groove 74. Once the plug-in unit 80 is attached to the first spar 70 in the region of the recess 78, the second spar 72 can only be pulled out to the stop of the first projection unit 76 to the second projection unit 82. The second projection unit 82 is also formed as a rivet.

In order to improve the sliding properties of the second spar 72 within the first spar 70, according to the embodiment according to FIG. 22 in the inserted front end region of the second spar 72, a Teflon stopper 84 attached, the outer wall side rests with the inner wall of the first spar 70. It can also be used otherwise designed sliding bearing element.

In the following, the assembly of the device 10, that is a leading railing with reference to the representations in FIG. 1 and the FIGS. 37 a) to e) explained in more detail.

After the lowermost Gerüstage 49 is created, a covering 54 is mounted on the upper side and the device 10, consisting of two railing supports 12 and the telescopic handrail 22, created on the ground. Now, the device 10 can be connected on both sides of the floor 49. For this purpose, the third connection device 18 is suspended in the region of the connection of the already mounted railing rail 24 on the vertical stem 26 and the second connection device 16 is connected by means of a wedge 46 on the vertical stem 26. This is done on both sides of the lowest equipment days 49. This condition is in FIG. 1 represented by the railing support 12 shown in dashed lines on the right and the railing support 12 shown in solid lines on the left. In this state, a temporary railing rail 22 with rail supports 12 is already present for the fitter, who then has to work on the level N1.

Is now the in FIG. 1 second equipment days 50 completed and the upper decking 56 hooked on the level N2, the device 10, without having to be disassembled and without a second mechanic is needed, offset upwards. According to FIG. 1 that resolves itself on the level N1 located fitter the second connection device 16 from in FIG. 1 right vertical stem 26. This is therefore possible from the level N1, since the second terminal device 16 is connected to the vertical stem 26 immediately below the level N1. Thereafter, the installer by hanging the third terminal device 18, the right handrail support 12 according to arrow direction I offset by a floor height upwards connect (arrow I) by first hangs the third connection device 18 in the connection area of the assembled railing rail 24 of the assembled scaffolding 50 days and it then the second connection device 16 wedged below the upper pad 56 on the vertical stem 26. Exactly the same process is then repeated on the side of the left railing support 12 (arrow II). Thereafter, an anticipatory railing with railing rail 22 and projecting railing supports 12 is present for the still to be created scaffolding days 52.

With the telescopic railing rail 22, the use of the device 10 on scaffolding days with different field widths is easily possible. To ensure an anticipatory railing in the course of ongoing assembly only the railing posts 12 must be implemented, the railing rail 22 remains mounted on the railing post 22.

It is also possible to connect a plurality of spaced railing spars 22 to the railing supports. For this purpose, only further connection devices must be connected to the railing supports 12.

It is also conceivable not to make the temporary railing spar telescopic. This is not an embodiment of the invention. To implement the device, however, then two fitters are required to solve in parallel each of the left and the right railing support and implement floor by floor to the top.

In FIG. 23 a second embodiment of a railing support 200 is shown, which is particularly suitable to be used in a known Layher flash scaffolding system. In the upper end region, a first connection device 14 is present, which, as in the railing support 12 according to FIG. 2 is designed as a tilting pin 32 which is connected via a cantilever element 122 directly to the outer wall of the round tube 13.

In the lower end area in FIG. 23 is a third and fourth connection means 100, 110 connected via cantilevers 104, wherein both connection devices 100, 110 are integrally formed. Both devices 100, 110 have a U-shaped cross-sectional contour seen in a plan view, wherein the web is semicircular and represents a Anlagequerschnittskonturbereich 120 for the mounted vertical stem 26 of the framework.

The third connection device 100 has two downwardly pointing (inclination approximately 45 ° (old)) flap regions 102, wherein the geometry of the third connection device 110 is designed such that due to the weight of the railing support 200, these are mounted in the mounted third connection device 100 Railing spar 24 of the existing scaffold automatically brings in a clamping vertical mounting position.

In this state, the inner contour of the Anlagequerschnittskonturbereichs 120 abuts the outer contour of the mounted vertical stem 26 of the scaffold. The fourth connection device 110 has two forward facing, parallel spaced abutment protrusions 112, which in the assembled state on the mounted vertical stem 26 of the frame Beyond and additionally form an anti-rotation, since they each on the inside of the existing connection structure 108 (see FIG. 28 ) for railing spars 24 of the existing scaffold.

The assembled state of the railing support 200 is in FIG. 28 presented in a detail perspective. The inclined tab portions 102 of the third connection device 100 engage over the mounted railing spars 24 of the existing stand. The railing spars 24 are connected to the mounted vertical handle 26 of the existing scaffolding via a so-called railing box 108. The abutment protrusions 112 of the fourth connection device 110 rest on the side of the railing box 108, so that a total security against rotation of the railing support 200 is provided.

Between the third connection device 100 and the first connection device 14, a second connection device 90 is connected to the round tube 13 via a projection unit 92. At the free end of the projection unit 92, a Hintergreifungsbereich 94 is connected, which seen in a plan view has a semi-circular cross-section. In the free end region of the semicircular Hintergreifungsbereiches 94 a downwardly open slot 96 is present.

The connection of the second connection device 90 in the mounted state to the framework is in FIG. 27 presented in a detail perspective. At the vertical stem 26 of the existing scaffold, a gusset plate 98 is welded in the upper corner to form a frame with a cross member 27. In the corner of the gusset plate a recess 25 is present. In this recess 25 is of above the free end region of the Hintergreifungsbereiches 94 of the second connection device 90 is inserted and attached via the slot 96 on the gusset plate 98. At the same time the Hintergreifungsbereich 94 94 partially encompasses positively the outer contour of the mounted vertical stem 26. Overall, there is a good positive connection, which ensures a reliable function and yet can be easily assembled or disassembled.

In the FIGS. 23 to 26 the distance of the round tube 13 of the railing support 200 to the mounted vertical handle 26 is indicated by A1.

In the FIGS. 29 to 32 a third embodiment of a railing support 300 is shown, which is suitable to be used in the known Layher Allround scaffolding system. The railing support 300 has a continuous round tube 13, at the upper end region of which a first connection device 150 with a tilting pin 32 is connected, which corresponds to the first connection device 14 of the railing support 200. In the lower end region of the railing support 300, a third connection device 140 is connected, which has an outwardly facing projection unit 142, at the free end portion of a downwardly projecting pin 144 is connected.

Spaced at a spacing R from the third connection device 140, a second connection device 130 is connected to the round tube 13, which has a wedge head 132. The wedge head 132 has a forward facing open slot 136 such that the wedge head 132 rests on a terminal rosette 162 (see FIG FIG. 39 ) can be deferred. The connection rosette 162 has continuous Recesses. The releasably clamping connection is made by hammering a wedge 134 captive on the wedge head 132. This type of connection corresponds to the wedge lock technique known in the case of scaffolding.

The distance A5 of the second connection device 130 from the first connection device 150 is dimensioned such that the first connection device 150 is attached to a mounted vertical leg 26.1 (see FIG Figure 38 ) connected railing support 300 sets a height level H, which corresponds to the railing height of the still to be created equipment days.

In the FIGS. 33 to 36 a further embodiment of a railing support 400 is shown, which has substantially the same structure as the railing support 300. The same components bear the same reference numerals and will not be explained again. The first connection device 150 and the third connection device 140 correspond to the reference to FIGS FIGS. 30 and 32 already described connection devices.

In contrast to the railing support 400 according to FIG. 29 a second connection device 160 is provided which also has a wedge head 132 with slot 136, but has a wedge 160 which is not permanently connected to the wedge head 132, but is longitudinally displaceable on a longitudinal displacement unit 166 on the tube 13. The longitudinal displacement unit 166 has an upper sleeve 167, a middle sleeve 168 and a lower sleeve 169. The sleeves surround the round tube 13 and are mounted longitudinally displaceable on this. The sleeves are coupled to one another via a rod unit 170. The wedge 164 is connected to the middle sleeve 168, which is located just above the wedge head 132.

Below the wedge head 132, the lower sleeve 169 is present. The upper sleeve 162 is disposed in the upper end region of the railing support 400, such that when the railing support is mounted, the upper sleeve 167 can be conveniently grasped by a person standing on the upper framework level. The railing support 400 provides a safety advantage over the railing support 300 in that the installer is in a secure, nearly upright position for disengaging the wedge 164, while to disengage the wedge 134 of the second attachment 130 of the railing support 300, the installer must bend deeply.

In FIG. 39 FIG. 12 is a detailed perspective view of an intermediate mounting state of a leading railing using the railing post according to FIG FIG. 29 represented over two framework fields. The basic framework is formed by the well-known Layher Allround scaffolding system. There are already two scaffoldings 50, 49 mounted. For the still to be assembled scaffolding 52 a railing is to be provided, which is to be mounted from the upper existing floor 50. In the illustration according to FIG. 39 the right hand railing support 300 is still connected to the lower vertical stem 26.1. The left handrail support 300 is already connected on the upper side to the left upper vertical handle 26.1. For this purpose, the second connection device 130 is connected by means of the wedge 134 and the wedge head 132 to the uppermost rosette 162 of the vertical stem 36.1. At the same time, the pin 144 of the third connection device 140 engages in a recess of the rosette 162 of the vertical stem 26. 1, which is arranged at a distance below it with a spacing R. In the FIG. 39 middle railing support 300 is already shown schematically solved by the vertical stem 26.1. By simply pushing up the middle railing support 300 and connection to the associated central vertical stem 26.1 can to mounting railing rail 22 are brought to the height level H for the left scaffolding field. In this case, the railing rail 22 must not be solved, since due to its telescopability, a change in length during the assembly process is easily possible. After the central vertical support 300 is connected to the top of the middle vertical stem 26.1, is in the progress of the assembly of in FIG. 39 Handrail support 300 shown on the right dissolved and also connected to the upper side on the right vertical handle 26.1.

FIG. 40 shows the same mounting condition for the railing support 200 according to FIG. 23 , Wherein the known Layher flash scaffold system is used as the basic scaffold system. To mount the railing support 32, the third connection device 100 is suspended in the connection area of an already mounted railing rail 24 to the vertical support 26 with its oblique flap portions 102, at the same time the second connection device 90 is threaded into the recess of the gusset plate 98 and by plugging the slot 96 on the Gusset plate 98 a positive connection is generated. The abutment protrusions 112 of the fourth connection device 110 surround the connection area arranged in the connection box for the mounted railing spars 24, so that an anti-rotation of the railing support 200 is ensured in the mounted state.

In Figure 38 is a detailed side view of a bearing variant for the telescopic railing rail 22 with its first spar 70 and its second spar 72 shown. The presentation essentially corresponds to the illustration according to FIG FIG. 12 , The same components bear the same reference numerals and will not be explained again. The illustrated embodiment improves the telescoping of the two spars. Thus, a guide cap 85 is plugged onto the end region of the first spar 70 and connected via the plug-in unit 80, which projects beyond the end contour of the first spar 70 and in this region has inwardly slightly protruding bearing surfaces 89 which bear against the outer wall of the second spar 72 , As material for the guide cap, a material is used which has a very low coefficient of sliding friction, which is the case in particular with Teflon. In conjunction with the sliding bearing unit at the other end of the second spar 72, that is, for example, the Teflon stopper 84 according to FIG. 22 , an extremely smooth telescoping of the railing 22 is achieved.

Claims (25)

1. Device (10) for a scaffolding with scaffolding levels (49, 50, 52) having upright members (26), locking bars, decking (54) and guard rails (24) for the mounting of a guard rail (22) that is temporarily necessary from an existing scaffolding level (50) for a scaffolding level (52) still to be erected thereabove, having

   - at least two rail stanchions (12) connectable in a detachable manner in each case by means of connecting devices (16, 18, 20; 90, 100, 110; 150, 130 140; 160) to an upright member (26) and

   - at least one telescopic temporary guard rail (22), which, in each case in its respective end region, is connectable to the rail stanchion (12) in the upper end region by means of a first connecting device (14; 150),

   - wherein the first connecting device (14; 150) and consequently the connected temporary guard rail (22), with rail stanchions (12) connected to the upright members (26), is situated at a predetermined height (H) with reference to the height (N2) of a scaffolding level (52) still to be mounted thereabove and the temporary guard rail (22) has a first rail (70) in the form of a hollow profile and a second rail (72) that is insertable into and removable from the first rail (70), characterized in that

   - the guard rail (22) has a blocking device (66), which prevents a complete pulling apart of the telescopic rails (70, 72), wherein the second telescopic rail (72) has a continuous longitudinal groove (74) extending in the longitudinal direction,

   - there is a first projection unit (76) in the longitudinal groove (74) in the inside of the inserted end region, .

   - the first telescopic rail (70) has a continuous recess (78) in its wall in its end region facing the second rail (72),

   - there is a plug-in unit (80), which is connectable to the first rail (70) and has a second projection unit (82), which is insertable through the recess (78) of the first rail (70) and

   - when the maximum extended length of the telescopic rails (70, 72) has been reached, the first and second projection unit (76, 82) abut against one another.
2. Device according to Claim 1, characterized in that

   - the telescopic length of the guard rail (22) is selected such that the device can be used with different field lengths (L) and also over a plurality of field lengths of the scaffolding system.
3. Device according to Claim 2, characterized in that

   - the field lengths are in the range between 2 and 4 m (metres), in particular between 2.07 and 3.07 m (metres).
4. Device according to Claim 1, characterized in that

   - the plug-in unit (80) is in the form of a spring connector.
5. Device according to Claim 1 or 4, characterized in that

   - the first and/or second projection unit (76, 82) is/are in the form of a rivet.
6. Device according to Claim 1, characterized in that

   - the second rail (72) is corrugated on the outside.
7. Device according to one or more of the preceding claims, characterized in that,

   - the second rail (72) is mounted on the first rail (70) in at least one end region, in particular in both end regions, by means of a sliding bearing unit.
8. Device according to Claim 7, characterized in that

   - the sliding bearing unit has material with a low coefficient of sliding friction, in particular plastics material or Teflon.
9. Device according to Claim 8, characterized in that

   - in the end region of the second rail (72) inserted into the first rail (70), the sliding bearing unit is realized as a plug (84) connected to the second rail (72), the outside wall of which plug abuts in regions against the inside wall of the first rail (70).
10. Device according to Claim 7 or 8, characterized in that

    - at the end region of the first rail (70) lying in the direction of extension, the sliding bearing unit is realized as a guide cap (85) connected to the first rail (70) with inwardly pointing bearing surfaces (89), which abut against the outside wall of the second rail (72).
11. Device (10; 200; 300) according to one or more of the preceding claims, characterized by

    - a rail stanchion (12, 200) connectable at the front of an upright member (26) of the existing scaffolding level (50) with

    - a first connecting device (14),

    - a second connecting device (16, 90),

    - a third connecting device (18, 100),

    - a fourth connecting device (20, 110), wherein

    - the first connecting device (14) is located in the upper end region of the rail stanchion (12) and serves for connecting the temporary guard rail (22),

    - the fourth connecting device (20, 110) is located in the lower end region of the rail stanchion (12),

    - the third connecting device (18, 100) is realized such that it is detachably connectable to or slippable onto or suspendable in the region of the connection of the mounted guard rail (24) to the mounted upright member (26) of the existing level (50) and the spacing (A4) between the third connecting device (18, 100) and the first connecting device (14) is selected such that the temporary guard rail (22), with the third connecting device (18, 100) connected, is situated at a predetermined height (H) with reference to the scaffolding level (52) still to be erected,

    - the second connecting device (16, 90) is positioned between the first and third connecting device (14, 18, 100) such that it is detachably connectable in the upper region to the mounted upright member (26) of the existing scaffolding level (50).
12. Device according to Claim 11, characterized in that

    - the first connecting device (14) has a projection unit (30) with rocker arm (32) located substantially perpendicularly to the longitudinal direction of the rail stanchion (12) and the temporary guard rail (22) has a continuous recess (34) in its end region, in such a manner that the guard rail (22) can be pushed onto the projection unit (30) and the rocker arm (32) secures the connection of the guard rail (22) under the effect of its own weight.
13. Device according to Claim 11, characterized in that

    - the second connecting device (16) has two protruding flange elements (42) or one U profile unit (40) which is/are slippable onto the mounted upright member (26) with protruding flange elements (42) and the protruding flange elements (42) each have a continuous recess (44) and the detachable connection to the upright member (26) is possible by driving a wedge (46) into the recesses (44) with the U profile unit slipped in position.
14. Device according to Claim 11, characterized in that

    - the second connecting device (90) has a projection unit (92), which undercuts the mounted upright member (26) in regions with an undercut region (94), and in the undercut region (94) there is a downwardly open slot (96) which is pluggable onto a gusset plate (98) on the mounted scaffolding.
15. Device according to Claim 14, characterized in that

    - the cross section of the undercut region (94) is substantially a part circle.
16. Device according to Claim 11, characterized in that

    - the third connecting device (18, 100) has one, in particular two spaced apart parallel lugs (60, 102) with lug regions (32) pointing inclinedly downwards, wherein the connecting device (18, 100) is realized such that, when connected, the rail stanchion assumes an upright assembly position solely under the effect of its own weight.
17. Device according to Claim 11, characterized in that

    - the fourth connecting device (20) is in the form of a projection unit (21), the free end face region of which, in the mounted state of the rail stanchion (12), abuts at least in regions against the outside of the mounted upright member (26).
18. Device according to Claim 17, characterized in that

    - the fourth connecting device (110) has two spaced apart contact projections (112), each of which, in the mounted state, abut against the inside of the mounted scaffolding in the connecting region and thereby form an anti-twist device.
19. Device according to Claim 16, 17 or 18,
    characterized in that

    - the third connecting device and the fourth connecting device (110) are realized in one piece.
20. Device according to one or more of Claims 16 to 19,
    characterized in that

    - the third connecting device (100) and/or the fourth connecting device (110) have a contact cross sectional contour region (120), which, in the mounted state, abuts against the outer contour of the mounted upright member (26) in regions in a positive locking manner.
21. Device according to Claim 20, characterized in that

    - the third connecting device (100) and the second connecting device (110), when viewed in a top view, have a substantially U-shaped cross sectional contour, wherein the web of the U-shaped cross section forms the contact cross sectional contour region (120).
22. Device according to one or more of Claims 1 to 10, wherein the upright members (26) of the mounted scaffolding have connecting rosettes (162) with recesses in the longitudinal direction in a predetermined grid dimension (R), characterized by

    - a rail stanchion (300, 400) connectable to the front of an upright member (26) of the existing scaffolding level (50) with

    - a first connecting device (150),

    - a second connecting device (130, 160),

    - a third connecting device (140),

    - the first connecting device (150) is located in the upper end region of the rail stanchion (300, 400) and serves to connect the temporary guard rail (22),

    - the third connecting device (140) is located in the lower end region of the rail stanchion (300, 400),

    - the second connecting device (130, 160) is realized so as to be slippable onto the connecting rosette (162) and connectable in a detachable manner to the wedge head (132) by means of a wedge (134, 164),

    - the third connecting device (140) is realized as a projection device (142) with a downwardly pointing pin (144), which is insertable into a recess of a connecting rosette (160),

    - wherein the spacing between the second and third connecting device (90, 100) corresponds to the grid dimension (R) and the spacing (A5) between the second connecting device (130, 160) and the first connecting device (150) is selected such that the temporary guard rail (22), with the third connecting device (18) connected, is situated at a predetermined height (H) with reference to the scaffolding level (52) still to be erected.
23. Device according to Claim 22, characterized in that

    - the wedge (134) is located on the wedge head (132) so as to be undetachable.
24. Device according to Claim 22, characterized in that

    - the wedge (164) is located so as to be longitudinally displaceable on the rail stanchion (300).
25. Device according to Claim 24, characterized in that

    - there is a longitudinal displacement unit (166) connected to the wedge (164), said longitudinal displacement unit being realized such that it can be grasped by a person standing on the scaffolding field to be mounted.

Images