CN113508210A

CN113508210A - Scaffolding column connection rosette and scaffolding assembly with hollow embossments at reduced nominal thickness

Info

Publication number: CN113508210A
Application number: CN201980085343.3A
Authority: CN
Inventors: 埃尔扎德·米基奇
Original assignee: Peri GmbH
Current assignee: Peri GmbH
Priority date: 2018-10-22
Filing date: 2019-10-21
Publication date: 2021-10-15
Also published as: DE102018218060A1; WO2020083821A1; US20220010569A1; EP3870779A1

Abstract

The invention relates to a coupling socket (10) for a scaffolding column (40), comprising a plurality of through slots (16, 18), the plurality of through slots (16, 18) being intended to be passed through by a coupling of a scaffolding component (42) to be detachably coupled to the coupling socket (10), the plurality of through slots (16, 18) being arranged spaced apart from each other in the circumferential direction of the coupling socket (10). The connecting flower base has an upper side and a lower side (12a, 12b), the upper side and the lower side (12a, 12b) are designed to be plane-parallel and define a nominal thickness D of the connecting flower base 10_N. The connection rosette is provided with a plurality of hollow embossments (24), the plurality of hollow embossments (24) having a projection (26) formed on only one of the two side faces (12a, 12b) and a recess (28) correspondingly formed on the respective other side face (12a, 12 b). The hollow embossings (24) are arranged spaced apart by through slots (16, 18) on radial sections (30) of the connection socket (10), the radial sections (30) extending in the radial direction from an inner edge (32) to an outer edge (22) of the connection socket (10), and one of the through slots (16, 18) is defined by the radial sections (30) on both sides. The invention also relates to a scaffolding assembly (100).

Description

Scaffolding column connection rosette and scaffolding assembly with hollow embossments at reduced nominal thickness

Technical Field

The present invention relates to coupling flower seats for scaffolding columns (e.g. coupling flower seats used as nodes for coupling additional system components in a system scaffolding) and scaffolding assemblies.

Background

In the construction field, scaffolds are used as work platforms for fastening concrete formworks or as protection devices. System scaffolding, including so-called frame scaffolding and modular scaffolding, is constructed from (mainly manufacturer-specific) scaffold components of a scaffolding system. The system scaffolding has vertically (upright) arranged scaffolding columns provided with a number of connection points or nodes on which other system scaffolding components, such as horizontal ledgers, diagonal ledgers and (scaffolding) brackets, can be mounted and which can be connected to each other. The nodes are typically made up of perforated plates called connecting rosettes. The connection rosette is typically comprised of metal in view of the required load bearing capacity and is fixedly welded or otherwise fastened to the scaffolding column. The cumulative mass of the coupling flower seats of the scaffolding is a considerable drawback both from the point of view of the costs of manufacture and of transport and in terms of the manoeuvrability of the scaffolding column.

Disclosure of Invention

It is therefore an object of the present invention to provide a connection socket which can be produced overall with a lower material outlay and more cost-effectively. Furthermore, a scaffolding assembly with a scaffolding assembly is presented.

The object relating to the connection flower holder is achieved by a connection flower holder having the features given in claim 1. A scaffolding assembly according to the invention is set out in claim 11. Preferred further embodiments of the invention are the subject matter of the description and the dependent claims.

The aperture plate or the connection rosette according to the invention is provided for mounting on a scaffolding column and for connecting at least one additional (systematic) scaffold component, such as a horizontal crossbar, a so-called diagonal bar (especially a vertical diagonal bar (vertika gonale)), a support frame or other manufacturer-specific scaffold component.

The through slots of the coupling bosses, through which the coupling members of the scaffold part to be detachably coupled to the coupling bosses are allowed to pass, are provided to be spaced apart from each other in the circumferential direction of the coupling bosses. According to the invention, the connecting socket has an upper side and a lower side, which are designed to be plane-parallel. The connecting rosette is provided with a plurality of hollow embossments having a (hollow-embossed) projection formed on only one of the two sides and a (hollow-embossed) recess corresponding to the projection in the respective other side. The hollow embossments are respectively arranged on a radial section of the connecting boss, which extends in a radial direction from an inner edge to an outer edge of the connecting boss and by which one of the through grooves is limited on both sides, wherein the hollow embossments are respectively arranged spaced apart from the through grooves. Due to the hollow embossing, the connection flower seat has a functional thickness only at defined positions, which is greater than the nominal thickness of the connection flower seat, i.e. greater than the plate thickness of the connection flower seat. The connection receptacle thus has sufficient bearing capacity at a later time, while at the same time being thinner overall, i.e. having a smaller nominal thickness, than is possible at present. The resulting reduction in the quality of the connection socket provides advantages in production technology as well as cost advantages. By means of the local functional thickening or the increase in the structural height of the connection socket, which is achieved by the hollow embossing, a defined support surface for the scaffold part to be connected to the connection socket can be achieved. A secure and seamless or substantially seamless fit of the scaffold parts on the coupling rosette is thereby ensured. On the other hand, undesirable excessive or local overloading of the connection socket can thus be reliably eliminated.

Furthermore, existing scaffold parts designed for mounting on the coupling socket, having a greater uniform nominal thickness, can be easily coupled to the coupling socket according to the invention without these existing scaffold parts having an excessive amount of play or being able to tilt.

In this case, the nominal thickness is considered to be the uniform material thickness of the connection flower seat that the connection flower seat has in the area without hollow embossments.

Due to the plane-parallel upper and lower side, the connecting bosses can be cut or punched out freely from the sheet metal blank at low cost. All hollow embossments can be introduced into the material connecting the flower seats simultaneously or in the context of a progressive bonding process (folgeverbundvahren) without a great technical effort. The connection flower seat can be produced in mass production at low cost. The hollow embossments are each spaced apart by a through groove and are each arranged on a radial section of the connecting socket, which extends in a radial direction from an inner edge to an outer edge of the connecting socket and by which one of the open grooves is defined on both sides. The hollow embossing is therefore completely surrounded by the flat side of the connecting rosette. The projection can thus be realized as a functional contact surface for the scaffold part to be connected to the connection socket, which contact surface has a particularly high load-bearing capacity. This makes it possible to eliminate accidental shearing of the projection or accidental deformation of the projection under the often severe conditions of use during transport or handling. Thus, undesirable shearing of the projection or undesirable deformation of the projection under the often harsh conditions of use during shipping and handling can be eliminated.

According to the invention, each of the aforementioned flower seat sections has only one hollow embossment. This makes it possible to avoid excessive structural weakening of the connection receptacle.

The projections of the coupling rosette, defined by the hollow embossments, serve as support surfaces for the scaffold parts to be coupled to the coupling rosette. In order to simplify its assembly, the projection preferably has no shape of a corner edge, but a rounded shape. As a result, undesired curling of the scaffold parts to be connected or disconnected from the connection receptacle can be reliably eliminated. This is also advantageous from the viewpoint of labor protection.

According to a preferred embodiment of the invention all hollow embossments are arranged evenly spaced from the central axis of the connecting rosette. In this way, a favorable axisymmetrical loading of the connection socket at the fulcrum formed by the projection can be achieved.

According to the invention, the projections may coincide with one another in their shape and/or in their size. This aspect provides advantages in terms of production technology. On the other hand, manual operation errors can thus be avoided.

It is particularly preferred that all the protrusions of the hollow embossment have a circular cross-sectional shape. This cross-sectional shape enables a particularly load-stable embodiment of the projection and at the same time enables only a small material weakening of the connection boss.

Preferably, the projection has a height h which corresponds at most to the nominal thickness D of the coupling receptacle_NHalf of that. Thereby, the functional thickness of the connection flower seat is increased to at least 1.5 times the nominal thickness of the connection flower seat.

The through slots may generally have the same shape and size or may be at least partially different from each other in terms of their shape and size in order to allow connection of different types of scaffold parts. In this way, the connection flower seat can have a first through slot and a second through slot, wherein the first through slot is larger than the second through slot, and the first through slot is implemented so as to open towards the central groove of the connection flower seat, opposite to the second through slot. The first through slot is particularly adapted for connecting a horizontal crossbar. The smaller second through slot is particularly suitable for connecting diagonal bars (e.g. vertical diagonal bars). The second through-slot may in particular have a circular shape.

The scaffolding assembly according to the present invention comprises a scaffolding rod having the aforementioned coupling flower seats and a scaffolding member detachably fastened or coupled to the coupling flower seats. The scaffold part has one or more dowel pins, wherein according to a first alternative embodiment each dowel pin engages in a hollow embossed groove of the connection flower seat.

According to a second alternative embodiment, the scaffold part (in its assembled state to the coupling socket) is laterally limited by at least one projection of the coupling socket to its possible degree of pivotability relative to the coupling socket. By means of this rotational or pivotal limitation, the coupling head of a scaffolding element (abhebelten) hooked into or locked via one of the through slots is prevented from being pried off (Abhebeln) from the scaffolding element, which is colloquially referred to as "jamming". This is advantageous for the durability of both the scaffold part and the connection flower seat.

The scaffold part can be designed as a diagonal bar (preferably a vertical diagonal bar) which has on one end a prong provided with a receiving gap for a connection flower seat having a nominal thickness which is greater than the nominal thickness of the connection flower seat, and which in the state of its detachable mounting on the connection flower seat engages the connection flower seat on both sides in the axial direction and is fixed on the connection flower seat by means of a locking element or a securing element which engages through one of the through slots of the connection flower seat.

Alternatively, the scaffold parts may be horizontal crossbars having a coupling hook on one end, the coupling engaging in one of the through slots of the coupling rosette. The connecting hook may be assigned a safety wedge or the like. According to the invention, each dowel pin of the crossbar head may be dimensioned in its length such that the normal force of the horizontal crossbar can be transmitted to the connection boss. In other words, each locating pin of the cross-head may be designed to be longer than the depth of the corresponding hollow embossed groove of the connecting boss.

Further advantages of the invention are given by the description and the enclosed drawings. The embodiments shown and described are not to be understood as exhaustive enumeration but rather have exemplary character for the description of the invention.

Drawings

Shown in the drawings are:

fig. 1 is a top view of a coupling socket with four first through grooves and four second through grooves, which are arranged alternately in the circumferential direction of the coupling socket and have locally thickened hollow embossments for the coupling socket for connection with a scaffold part as free as possible from play;

FIG. 2 is a perspective view of the connection hub of FIG. 1;

FIG. 3 is a perspective view of the connection socket according to FIG. 1, showing the hollow embossed protrusions provided on the underside;

FIG. 4 is a side view of the connection hub according to FIG. 1;

fig. 5 is a perspective view of another coupling block with hollow knurling, designed in the shape of an 3/4 flower and having three first through slots and two second through slots for coupling different scaffold parts;

fig. 6 is a perspective view of another connecting boss having a hollow embossment, five first through slots and only two second through slots;

FIG. 7 is a perspective view of another connecting boss having a hollow embossment and only six first through slots, viewed from the upper side thereof;

FIG. 8 is a perspective view of the connection socket according to FIG. 7, viewed from the underside thereof;

fig. 9 is a partial perspective view of a first scaffold assembly having a scaffold post provided with a coupling rosette according to fig. 1 and a fork of a scaffold part designed as a vertical diagonal bar, which fork is connected to the coupling rosette;

fig. 10 is another perspective view of the scaffolding assembly according to fig. 9;

FIG. 11 is a detail sectional view of the scaffold assembly according to FIG. 10 showing the locating pin engaged in the hollow embossed groove;

FIG. 12 is a side view of the scaffold assembly according to FIG. 10;

fig. 13 is a front view of the prongs of the scaffold component of the scaffold assembly according to fig. 12; and

fig. 14 is a partial cross-sectional view of a second scaffold assembly having scaffold posts provided with connecting rosettes according to fig. 1, and a ledger head of a scaffold part designed as a horizontal ledger, which ledger head is connected to the connecting rosettes.

Detailed Description

In fig. 1 to 4, there is shown a perforated plate or connection flower holder 10 for a scaffolding column, such as used in so-called modular scaffolding. The attachment flower 10 may be welded to the scaffolding column on which it is disposed or otherwise secured in any suitable manner. The coupling receptacle 10 is designed here to be closed annularly and comprises an upper side 12a and a lower side, which is not visible in fig. 1 for reasons of illustration, which are designed to be plane-parallel to one another. The central recess 14 (i.e., a scaffold post recess) is used to receive a scaffold post (not shown). The coupling receptacle 10 comprises several coupling positions a for additional scaffold parts. Each connection location a includes either a first through slot 16 or a second through slot 18. The through

slots

16, 18 are arranged spaced apart from each other in the circumferential direction of the coupling boss 10. The first and second through

slots

16, 18 may be arranged alternately in the circumferential direction on the connection socket 10, respectively, according to fig. 1.

Here, the first through groove 16 is larger than the second through groove 18 and is designed to open toward the central groove 14 of the coupling boss 10. The first through slot 16 is primarily intended for detachable connection of scaffold parts in the form of horizontal ledgers. Such scaffold parts usually comprise a coupling element in the form of a hook (in particular with a safety wedge) which can be hooked in the first through slot 16. The second through-slots 18 are each designed in a circular manner and are used for connecting scaffold parts in the form of diagonal bars (in particular so-called vertical diagonal bars). The second through slots 18 may each be assigned a radially inwardly facing recess 20 connecting an outer edge 22 of the flower seat 10. These scaffold parts are usually fastened or locked to the coupling flower bed 10 by means of shear bolts.

The coupling socket 10 has a smaller nominal thickness, so that a coupling socket 10 with a smaller material usage and with a reduced mass can be provided. The existing scaffold parts of the manufacturer-specific scaffold systems available on the market are designed for connecting connection flower seats having a considerably larger nominal thickness than that. However, the coupling socket 10 is compatible with such scaffold parts, i.e. despite the small nominal thickness of such scaffold parts, the coupling socket 10 realizes a substantially void-free abutment on the coupling socket 10 for such scaffold parts. For this purpose, the connection flower seat 10 is provided with a plurality of individual hollow embossments 24. The hollow embossing 24 has protuberances 26, these protuberances 26 each being formed on only one of the two lateral surfaces 12 of the coupling receptacle 10 (figures 3 and 4). As can be clearly seen in fig. 2, the recesses 28 of the hollow embossments 24, which are formed in correspondence with the protuberances 26, are formed on the respective other face 12a, here the upper face 12 a. The hollow embossments 24 are arranged on a radial section 30 of the connection socket 10, spaced apart from the through

slots

16, 18, respectively, which radial section 30 extends in a (strictly) radial direction from an inner periphery or edge 32 of the connection socket 10 to its outer edge 22. The radial section 30 is thus a segment of the connection hub which is delimited laterally on both sides in the circumferential direction by a local radius with respect to the central axis Z of the connection hub 10. By each of the radial segments 30, one of the through

slots

16, 18 connecting the flower seat 10 is respectively defined circumferentially on both sides. Preferably, each of the radial segments 30 has only one hollow embossment 24, respectively. Thereby, unnecessary material weakening of the connection hub 10 can be avoided by the hollow embossing 24. In addition, functionally, no further hollow embossing is required. According to fig. 1, all the hollow embossments 24 of the coupling receptacle 10 are arranged evenly spaced from the central axis Z of the coupling receptacle 10. Thus, the hollow embossments 24 are each arranged on a circular line 34 around the central axis Z of the connecting receptacle 10. The second through slots 18 are each disposed radially entirely within the circular line 34.

According to the perspective view of the coupling receptacle 10 shown in fig. 3, all the protuberances 26 of the hollow embossing 24 have a circular cross-sectional shape. By the surrounding connection of the projection to the rest of the connection receptacle, undesired shearing or tearing can be reliably prevented.

In fig. 4, the two plane-

parallel sides

12a, 12b of the connecting rosette 10 can be clearly seen. The two

lateral surfaces

12a, 12b define a nominal thickness D of the coupling flower seat 10_NThe nominal thickness D_NAlways less than 7.1 mm and, in particular, about 6 mm. Each protuberance 26 of the hollow embossment 24 has a height h which preferably corresponds at most to the nominal thickness D of the connecting rosette 10_NHalf of that. Hollow embossingThe lobes 26 of 24 all have the same outer diameter 36. Nominal thickness D_NAnd the height h of the projection 26 together form a functional thickness D of the connecting rosette 10_F。

The connection socket 10 does not have to have a complete connection possibility for the scaffold parts. According to fig. 5, the connection of the connection socket 10 to the scaffold part can also be realized only by an arc segment 38 of less than 360 °. Preferably, the connection receptacle 10 is also designed in this case as an annular closure, in order to ensure a secure connection of the connection receptacle 10 to the scaffolding column on the one hand, and at the same time a large load-bearing capacity of the connection receptacle 10. Here, too, the hollow embossments 24 are arranged on a circular line (see fig. 1) annularly around the axis Z and the groove 14.

The embodiment of the coupling socket 10 shown in fig. 6 has a total of five first through slots 16 and two second through slots 18 for coupling additional scaffold components. This type of coupling receptacle 10 allows the scaffold parts to be coupled at a relative coupling angle α, where α <90 °, where α is 60 °, and at a further, smaller relative coupling angle β, where β <60 °, where β is approximately 30 °.

In fig. 7 another coupling block 10 with hollow embossments 24 is shown, which coupling block 10 has only a first through slot 16 for coupling scaffold parts in the form of a crossbar. The connection flower 10 comprises a total of 6 such first through slots 16, these first through slots 16 being arranged regularly spaced from each other around the central axis Z.

The connection socket 10 shown in fig. 6 and 7 allows, in addition to the classical right-angle connection of scaffold columns, i.e. in addition to the orthogonal arrangement of the scaffolds, a polygonal scaffold structure which differs therefrom and by means of which the scaffolds can be adapted in a simple manner to curved arrangements of buildings and the like. By means of the connection rosette shown in fig. 6, two diagonal rods can be connected, respectively, to connect the scaffolding column provided with the connection rosette 10 with other scaffolding columns or to mechanically fasten the scaffolding column to a building wall or the like.

In fig. 9 and 10, a scaffolding assembly 100 with diagonal bar connections is shown. The scaffolding assembly comprises a scaffolding column 40 having a connection flower bed 10 according to fig. 1, and a scaffolding member 42, only partially schematically indicated by dashed lines, the scaffolding member 42 being detachably fastened to the connection flower bed 10. The scaffolding column 40 is designed in a known manner as a hollow profile and has a circular cross-sectional shape. It will be appreciated that the scaffolding column 40 may also have a different cross-sectional shape. The scaffolding column 40 passes through the central recess 14 of the connection rosette 10. The longitudinal axis L of the scaffolding column 40 coincides with the central axis Z of the connection rosette 10. The connecting mount 10 may be fixedly welded to the scaffolding column 40 or may be fastened to the scaffolding column 40 in any other suitable manner. It is to be noted that the side 12a of the coupling receptacle 10 provided with the grooves 28 of the hollow embossments 24 faces upwards (in the vertical direction), while the side 12b of the coupling receptacle 10 provided with the protrusions 26 faces downwards. Thereby, the assembly of the scaffold parts to the connection socket 10 and the disassembly of the scaffold parts from the connection socket 10 are simplified. Furthermore, the load of the protrusions 26 of the hollow embossing 24 is significantly smaller when assembled than when the protrusions are directed vertically upwards from the coupling receptacle 10.

According to fig. 9, the scaffold part 42 is designed as a vertical diagonal having a hollow profile 44 and prongs 46 fastened to the hollow profile 44. The prongs 46 are arranged in a predetermined assembly position of the scaffolding column 40 on the connection flower holder 10. The fork head 46 comprises an upper jaw 48a and a lower jaw 48b, between which an accommodation gap 50 for the connection of the rosette 10 is formed, between the upper jaw 48a and the lower jaw 48 b. In the illustrated assembled position of the scaffold part 42, the prongs 46 of the scaffold part 42 grip the connection receptacle 10 axially on both sides. Thus, the connection socket 10 is partially disposed in the receiving gap 50 of the prong 46. Both

jaws

48a, 48b of the fork head 46 have contact surfaces 52 at their free ends for the scaffolding column 40. Preferably, the contact surface 52 has a radius of curvature (not shown in the drawings) formed corresponding to the radius of the scaffolding column 40 to achieve as large an area as possible of support of the prongs 44 radially on the scaffolding column 44. In fig. 10, the hollow profile 44 of the scaffold part 42 is not shown for reasons of illustration.

It is noted that in fig. 9 and 10, the shear bolt is not shown, which passes through the prong 46 and one of the second through slots 18 of the coupling socket 10 to secure the scaffold 42 in the assembled position of the scaffold 42 on the coupling socket 10.

In the illustrated embodiment, the prong 46 has two locating pins 54 on its upper jaw 48 a. These locating pins 54 are respectively arranged transversely on the upper jaw 48a of the fork head and can be welded, for example, to the upper jaw 48 a. When the prongs 46 are arranged in a predetermined assembly position of the prongs 46 in the connection socket 10, the positioning pins 54 are each in the groove 28 of one of the hollow embossings 24 of the connection socket. In this way, the prongs 46 of the scaffold part 42 can be simply positioned in the assembly position predetermined for the prongs 46 in the coupling receptacle 10. Furthermore, the engagement of the locating pin 54 in the groove of the hollow embossment 24, in a direction parallel to the upper side 12a of the attachment socket 10, achieves a void-free or substantially void-free fit of the prong 46. It is to be noted that the detent pin is always shorter than the groove 28 connecting the hollow knurls 24 of the flower seat 10, so that the detent pin does not carry pressure in the axial direction.

The attachment position of the prong 46 on the attachment hub 10 of FIG. 10 is shown in FIG. 11. The locating pin 54 may be partially embedded in the material of the prong.

Fig. 12 shows a side view of the scaffolding assembly 100 with diagonal bar connections according to fig. 10. The fork 46 engages in the axial direction two of the projections 26 of the hollow embossing 24 of the coupling rosette 10 by means of the lower jaw 48b of the fork 46. These projections 26 project in the axial direction from the coupling hub 10 onto the lower claws 48b of the fork 46. Functional thickness D of the connection flower seat 10_FOnly slightly smaller than the gap width b of the placement gap 50. The prongs 46 are thereby arranged with little circumferential play in a predetermined assembly position of the prongs 46 on the connection hub 10. The axial play S of the prongs 46 of the scaffold part 42 assembled on the connection socket relative to the connection socket 10 corresponds to the difference between the gap width b and the functional thickness DF of the connection socket 10, see fig. 4. The engagement depth of the positioning pin 54 in the groove 28 of the respective hollow embossment 24 of the coupling socket 10 is forcibly (minimally) selected to be greater than the axial clearanceS is smaller to enable the fork 46 to be assembled and disassembled on the coupling socket 10 in a simple manner. A locking or securing element 56, indicated by a dotted line in fig. 12, is used to fix the fork 10 in a predetermined assembly position of the fork 10 on the coupling receptacle 10. Here, the securing element 56 is designed as a locking pin (abseckbolzen) and the securing element 56 passes through one of the prongs 46 and the second through-groove 18 of the connection flower 10. The securing element 56 receives the normal force and also the thrust force of the scaffold part 42 exerted on the coupling receptacle 10. This reliably eliminates undesirable shearing or deformation of the locating pin 54 of the prong 46.

In fig. 13, a front view of the prongs 46 of the scaffold part 42 of the scaffold assembly 100 with diagonal bar connection is shown. The fork head 46 comprises an upper jaw 48a and a lower jaw 48b, between which an accommodation gap 50 for the connection of the rosette 10 is formed, between the upper jaw 48a and the lower jaw 48 b. Both

jaws

48a, 48b of the fork head 46 have contact surfaces 52 at their free ends for the scaffolding column. In the illustrated embodiment, the prong 46 has two locating pins 54 on its upper jaw 48 a. These positioning pins 54 are each arranged transversely on the upper jaw 48a of the fork head 46 and can, for example, be welded to the upper jaw 48 a. The detent pin 54 engages in the space of the receiving gap 50 or reduces the gap width b of the receiving gap 50 in a partial region.

Fig. 14 shows another scaffold assembly 100 with a cross bar connection. The scaffolding assembly 100 comprises a scaffolding column 40, a connection flower holder 10 arranged on the scaffolding column 40 and a scaffolding member 42 detachably fastened to the connection flower holder 10, the scaffolding member 42 being designed in the form of a horizontal cross-bar. The scaffold part, i.e. the horizontal ledger, comprises a ledger head 58 with a coupling hook 60, which coupling hook 60 engages in the first through slot 16 of the coupling rosette 10 in the said assembled state of the horizontal ledger on the coupling rosette 10 (see fig. 1).

The cross bar head 58 is located on the attachment flower stand 10 and can be supported on the scaffolding column 40 by the bearing surface 52 facing radially towards the scaffolding column 40. The securing wedges 62 are used to secure the scaffold part 42 in the assembled position of the scaffold part 42 on the connecting rosette 10. The cross-bar head 58 includes at least one locating pin 54, which locating pin 54 and cross-bar head 58 may be designed together as a single forging. Alternatively, at least one locating pin 54 may be fixedly welded to the cross-piece head 58. Preferably, each locating pin of the rail head 58 is disposed transversely on the rail head 58. In a predetermined assembly position of the horizontal transverse bar on the connection socket 10, the at least one positioning pin 54 engages in the groove 28 of at least one of the hollow embossments 24 of the connection socket 10. On the one hand, the transverse rod head 58 of the scaffold part 42 can thus be positioned in a simple manner precisely in a predefined assembly position of the transverse rod head 58 at the connection position a of the connection socket 10, which is provided for the connection of a horizontal transverse rod. The alignment can be carried out in a predetermined manner with respect to the connection hub 10. Furthermore, the engagement of each locating pin 54 of the horizontal cross-bar in the groove 28 of the hollow embossment 24 of the coupling receptacle 10, in a direction parallel to the upper side 12a of the coupling receptacle 10, achieves a void-free or substantially void-free fit of the cross-bar head 60. Thus, each positioning pin 54 of the horizontal cross-bar can also transmit a thrust force, i.e. a force in a direction parallel to the upper side 12a of the coupling flower holder 10. It is to be noted that each of the positioning pins 54 of the scaffold parts 42 designed as horizontal ledgers may have a length l which may be smaller than the depth of the groove 28 of the associated hollow embossment 24 of the coupling rosette 10 or may also be equal to or greater than said depth. The positioning pin 54 can thus also be subjected to pressure in the axial direction relative to the longitudinal axis L of the scaffolding column.

Claims

1. A connection hub (10) for a scaffolding column (40), comprising:

a plurality of through slots (16, 18) for being passed through by a coupling of scaffold components (42) to be detachably coupled to the coupling rosette (10), the plurality of through slots (16, 18) being arranged spaced apart from each other in a circumferential direction of the coupling rosette (10);

upper and lower sides (12a, 12b), said upper and lower sides (12a, 12b) being designed plane-parallel and defining a nominal thickness D of said connection flower seat 10_N；

A plurality of hollow embossments (24), said plurality of hollow embossments (24) having a projection (26) formed on only one of said two side faces (12a, 12b) and a recess (28) correspondingly formed on the respective other side face (12a, 12b),

wherein the hollow embossings (24) are arranged spaced apart by the through slots (16, 18) on radial sections (30) of the connection socket (10), the radial sections (30) extending in the radial direction from an inner edge (32) to an outer edge (22) of the connection socket (10), and one of the through slots (16, 18) is defined by the radial sections (30) on both sides, respectively.

2. The connecting rosette (10) according to any of the preceding claims, characterized in that each radial segment (30) has exactly one hollow embossment (24) only.

3. The connecting rosette (10) according to claim 1 or 2, characterized in that all hollow embossings (24) are arranged evenly spaced from the central axis Z of the connecting rosette (10).

4. The connecting rosette (10) according to any of the preceding claims, characterized in that the protrusions (26) of the hollow embossment (24) each have a circular cross-sectional shape.

5. The connecting rosette (10) according to any one of the preceding claims, characterized in that each protuberance (26) of the hollow embossment (26) has the same height h, wherein preferably the height h corresponds at most to the nominal thickness D of the connecting rosette (10)_NHalf of that.

6. The connecting rosette (10) according to any of the preceding claims, characterized in that the protrusions (26) of the hollow embossing (24) coincide with each other in the shape of the protrusions (26) and/or in the size of the protrusions (26).

7. The method as claimed in any one of the preceding claimsThe connection flower seat (10), characterized in that the connection flower seat (10) has a nominal thickness D of less than 7.1 mm, in particular approximately 6 mm_N。

8. The connecting rosette (10) according to any of the preceding claims, characterized in that the through slots (16, 18) of the connecting rosette (10) have the same shape and size.

9. The connecting rosette (10) according to any of the preceding claims 1 to 7, characterized in that the connecting rosette (10) comprises a first and a second through slot (16, 18), wherein the first through slot (16) is larger than the second through slot (18) and, opposite to the second through slot (18), the first through slot (16) is designed to open towards the central groove (14) of the connecting rosette.

10. The connecting rosette (10) of claim 9, characterized in that the second through slot (18) is arranged radially completely within a circular line (34) cut through the hollow embossment (24).

11. A scaffolding assembly (100) comprising a scaffolding column (40) with at least one connecting rosette (10) according to any one of the preceding claims, and a scaffolding member (42), the scaffolding member (42) being detachably fastened to the connecting rosette (10), wherein the scaffolding member (42)

a) Having one or more positioning pins (54) and each positioning pin (54) engaging in a groove (28) of one of the hollow embossments (24) of the connecting receptacle (10); or

b) Is laterally limited in the degree of pivotability with respect to the scaffold part (42) of the coupling receptacle (10) by at least one of the projections (26) of the hollow embossing (24).

12. Scaffolding assembly (100) according to claim 11, characterized in that the scaffolding members (42) are designed as diagonal bars, preferably as diagonal barsA vertical diagonal comprising a prong (46) on one end, the prong (46) having a receiving gap (50) for the connection rosette (10), the width b of the receiving gap (50) being greater than the functional thickness D of the connection rosette (10)_FWherein, in a state of the detachable assembly of the prong (46) on the connection flower seat (10), the prong (46) engages the connection flower seat (10) on both sides in the axial direction, and the prong (46) is fixed on the connection flower seat (10) by a securing element (56), the securing element (56) passing through the prong (46) and the through slot (16, 18) of one of the connection flower seats (10).

13. The scaffold assembly according to claim 11, wherein the scaffold parts (42) are designed as horizontal crossbars, the water-balancing bar comprising on one end a crossbar head (58) with a coupling hook (60), the coupling hook (60) engaging in one of the through slots (16, 18) of the coupling rosette (10).

14. Scaffolding assembly according to claim 13, characterized in that each dowel pin (54) of the cross-bar head (58) is dimensioned in the length of said each dowel pin (54) such that the dowel pin (54) is able to transfer the normal force of the horizontal cross-bar onto the connection socket (10) in the direction of the longitudinal extension of the dowel pin (54).

15. Use of a connection flower seat (10) for a scaffolding column (40) according to any one of claims 1 to 10 in a scaffolding assembly.