Abstract
The invention relates to a connecting rosette (10) for a scaffolding post (40), comprising a plurality of through recesses (16, 18) for the passage of coupling parts of scaffolding components (42) to be detachably connected to the connecting rosette (10), which are arranged at a distance from one another in the circumferential direction of the connecting rosette (10). The connection rosette has an upper and a lower side surface (12a, 12b), which are designed plane-parallel and define a nominal thickness D.sub.N of the connection rosette. The connection rosette is provided with several hollow embossments (24) with projections (26) formed on only one of the two side faces (12a, 12b) and corresponding recesses (28) formed on the respective other side face (12a, 12b). The hollow embossments (24) are each arranged at a distance from the through recesses (16, 18) on a radial segment (30) of the connecting rosette (10), which extends in the radial direction from the inner edge (32) to the outer edge (22) of the connecting rosette (10) and by which one of the through recesses (16, 18) is bounded on each side. The invention further relates to a framework assembly (100).
Claims
1. A connecting rosette (10) for a scaffolding post (40), comprising: a plurality of through recesses (16, 18) for the passage of coupling parts of framework components (42) to be detachably connected to the connecting rosette (10), which are arranged at a distance from one another in the circumferential direction of the connecting rosette (10); an upper and a lower side surface (12a, 12b), which are executed plane-parallel and define a nominal thickness D.sub.N of the connection rosette 10; a plurality of hollow embossments (24) with projections (26) formed on only one of the two side surfaces (12a, 12b) and corresponding recesses (28) formed on the respective other side surface (12a, 12b), wherein the hollow embossments (24) are each arranged at a distance from the through recesses (16, 18) on a radial segment (30) of the connecting rosette (10), which extends in the radial direction from the inner edge (32) to the outer edge (22) of the connecting rosette (10) and by which one of the through recesses (16, 18) is bounded on each side.
2. Connection rosette (10) according to one of the preceding claims, characterized in that each radial segment (30) has only exactly one hollow embossment (24).
3. Connection rosette (10) according to claim 1 or 2, characterized in that all hollow embossments (24) are arranged uniformly spaced from the central axis Z of the connection rosette (10).
4. Connection rosette (10) according to one of the preceding claims, characterized in that the elevations (26) of the hollow embossments (24) each have a circular cross-sectional shape.
5. Connection rosette (10) according to one of the preceding claims, characterized in that each elevation (26) of the hollow embossments (24) have a uniform height h, the height h preferably corresponding at most to half the nominal thickness D.sub.N of the connection rosette (10).
6. Connection rosette (10) according to one of the preceding claims, characterized in that the elevations (26) of the hollow embossments (24) correspond to each other in their shaping and/or in their dimensioning.
7. Connection rosette (10) according to one of the preceding claims, characterized in that the connection rosette (10) has a nominal thickness D.sub.N of less than 7.1 millimetres, in particular of approximately 6 millimetres.
8. Connection rosette (10) according to one of the preceding claims, characterized in that the through recesses (16, 18) of the connection rosette (10) have a uniform shape and size.
9. Connection rosette (10) according to any one of the preceding claims 1 to 7, characterized in that the connection rosette (10) comprises first and second through recesses (16, 18), wherein the first through recesses (16) are larger than the second through recesses (18) and, in contrast to the second through recesses (18), are designed to be open towards a central recess (14) of the connection rosette.
10. Connection rosette (10) according to claim 9, characterized in that the second through recesses (18) are arranged in radial direction completely within a circular line (34) intersecting the hollow embossments (24).
11. Scaffolding assembly (100) comprising a scaffolding post (40) having at least one connecting rosette (10) according to any one of the preceding claims and a scaffold member (42) releasably secured to the connecting rosette (10), wherein the scaffold member (42) is a) has one or more locating pins (54) and each locating pin (54) engages a recess (28) in one of the hollow embossments (24) of the terminal rosette (10); or b) is laterally limited in its pivotability relative to the connection rosette (10) by at least one of the elevations (26) of a hollow embossment (24).
12. Scaffolding assembly (100) according to claim 11, characterized in that the scaffolding assembly (42) is designed as a diagonal, preferably vertical diagonal, which has at one end a fork head (46) with a receiving gap (50) for the connecting rosette (10), the width b of which is greater than the functional thickness DF of the connecting rosette (10), wherein the fork head (46) engages over the connecting rosette (10) on both sides in the axial direction in its state detachably mounted on the connecting rosette (10) and is secured on the connecting rosette (10) via a securing element (56) which engages through the fork head (46) and one of the through recesses (16, 18) of the connecting rosette (10).
13. Scaffolding assembly according to claim 11, characterized in that the scaffold member (42) is in the form of a horizontal latch having at one end a latch head (58) with a coupling hook (60) which engages in one of the through recesses (16, 18) of the connecting rosette (10).
14. Scaffolding assembly according to claim 13, characterized in that each positioning pin (54) of the latch head (58) is dimensioned in its length such that it is capable of transmitting normal forces from the horizontal latch to the connecting rosette (10) in the direction of its longitudinal extension.
15. Use of a connecting rosette (10) for a scaffolding post (40) according to any one of claims 1 to 10 in a scaffolding assembly.
Description
[0022] Shown in the drawing:
[0023] FIG. 1 a connection rosette with four first through recesses and four second through recesses, which are arranged alternately in the circumferential direction of the connection rosette and with hollow embossments for local thickening of the connection rosette for connecting scaffolding components with as little play as possible, in a plan view;
[0024] FIG. 2 the connection rosette from FIG. 1 in a perspective view;
[0025] FIG. 3 perspective view of the connection rosette according to FIG. 1 showing the elevations of the hollow embossments on the underside;
[0026] FIG. 4 the connection rosette according to FIG. 1 in a side view;
[0027] FIG. 5 another connection rosette with hollow embossments, which is designed in the sense of a ¾-rosette and has three first and two second through recesses for the connection of different scaffolding components, in a perspective view
[0028] FIG. 6 another connection rosette with hollow embossments and five first through recesses and only two second through recesses, in a perspective view;
[0029] FIG. 7 another connecting rosette with hollow embossments and only six first through recesses, in a perspective view on its upper side;
[0030] FIG. 8 the connection rosette according to FIG. 7 in a perspective view on its underside;
[0031] FIG. 9 a first scaffolding assembly with a scaffolding post provided with a connecting rosette according to FIG. 1 and with a fork head of a scaffold component designed as a vertical diagonal connected to the connecting rosette, in a sectional perspective view;
[0032] FIG. 10 the scaffolding assembly according to FIG. 9 in another perspective view;
[0033] FIG. 11 a detailed section of the framework assembly according to FIG. 10 showing the positioning pin engaging in the recess of a hollow embossment;
[0034] FIG. 12 the scaffolding assembly according to FIG. 10, in a side view;
[0035] FIG. 13 the clevis of the scaffold component of the scaffolding assembly according to FIG. 12 in a frontal view; and
[0036] FIG. 14 a second scaffolding assembly with a scaffolding post provided with a connecting rosette according to FIG. 1 and with a latch head of a scaffold component designed as a horizontal latch connected to the connecting rosette, in a sectional sectional view.
[0037] In FIGS. 1 to 4, a perforated disc or connecting rosette 10 for a scaffolding post, as used in so-called modular scaffolds, is shown. The connecting rosette 10 can be welded to the scaffold pole to be provided with it or can be fastened to the scaffold pole in another suitable way. Here, the connecting rosette 10 is closed in the form of a ring and comprises an upper side surface 12a and a lower side surface which is not visible in FIG. 1 for reasons of illustration and which are designed to be plane-parallel to one another. A central recess 14 (=scaffolding post recess) serves to accommodate the scaffolding post (not shown). The connection rosette 10 comprises various connection positions A for further scaffolding components. Each connection position A comprises a first through recess 16 or a second through recess 18. The through recesses 16, 18 are arranged at a distance from each other in the circumferential direction of the connection rosette 10. The first and second through recesses 16, 18 can each be arranged alternately on the connection rosette 10 in the circumferential direction as shown in FIG. 1.
[0038] The first through recesses 16 are larger than the second through recesses 18 and are open towards the central recess 14 of the connection rosette 10. The first through recesses 16 are primarily used for the detachable connection of scaffolding components in the form of horizontal ledgers. Such scaffolding components usually have coupling parts in the form of hooks, in particular with a securing wedge, which can be hooked into the first through recesses 16. The second recesses 18 are circular and serve to connect scaffolding components in the form of diagonals, in particular so-called vertical diagonals. The second through recesses 18 can each be assigned a radially inwardly pointing indentation 20 of the outer edge 22 of the connection rosette 10. These scaffolding components are usually secured or pinned to the connecting rosette 10 with a securing bolt.
[0039] The connection rosette 10 has a small nominal thickness so that it can be provided with a smaller amount of material and with a reduced mass. Existing scaffolding components of manufacturer-specific scaffolding systems available on the market are designed for connection to connection rosettes with a considerably larger nominal thickness in comparison. However, the connection rosette 10 is compatible with such scaffolding components, i.e. it enables such scaffolding components to be seated on the connection rosette 10 with essentially no play, irrespective of their smaller nominal thickness. For this purpose, the connection rosette 10 is provided with several individual hollow embossments 24. The hollow embossments 24 have projections 26, all of which are formed on only one of the two side surfaces 12 of the connecting rosette 10 (FIGS. 3 and 4). The depressions 28 of the hollow embossments 24 corresponding to the elevations 26 are formed on the respective other side surface 12a, in this case the upper side surface 12a, as can be seen clearly in FIG. 2. The hollow embossments 24 are each arranged at a distance from the through recesses 16, 18 on a radial segment 30 of the connecting rosette 10, which extends in a (strictly) radial direction from the inner circumference or inner edge 32 of the connecting rosette 10 to its outer edge 22. A radial segment 30 is thus such a segment of the connecting rosette which is laterally limited in the circumferential direction on both sides by a local radius with respect to the central axis Z of the connecting rosette 10. Each of the radial segments 30 delimits one of the through recesses 16, 18 of the connecting rosette 10 on both sides in the circumferential direction. Each of these radial segments 30 preferably has only one hollow embossment 24. In this way, an unnecessary weakening of the material of the connection rosette 10 by the hollow embossings 24 can be avoided. Moreover, no more hollow embossings are functionally required. According to FIG. 1, all hollow embossments 24 of the connection rosette 10 are uniformly spaced from the central axis Z of the connection rosette 10. The hollow embossments 24 are thus all arranged on a circular line 34 around the central axis Z of the connection rosette 10. The second through recesses 18 are arranged completely within the circular line 34 in the radial direction.
[0040] According to the perspective view of the connection rosette 10 shown in FIG. 3, the elevations 26 of all hollow embossments 24 have a circular cross-sectional shape.
[0041] Due to the circumferential connection of the projections to the rest of the connection rosette, they are reliably secured against undesired shearing or tearing off.
[0042] In FIG. 4, the two plane-parallel side surfaces 12a, 12b of the connection rosette 10 are clearly visible. The two side surfaces 12a, 12b define the nominal thickness D.sub.N of the connecting rosette 10, which is in any case less than 7.1 millimetres, in particular approximately 6 millimetres. Each projection 26 of the hollow embossments 24 has a height h, which preferably corresponds to a maximum of half the nominal thickness D.sub.N of the connecting rosette 10. The protrusions 26 of the hollow embossments 24 all have a uniform outer diameter 36. The height of the nominal thickness D.sub.N and the height h of the protrusions 26 together form a functional thickness DF of the connection rosette 10.
[0043] The connection rosette 10 does not have to have full connection possibilities for scaffolding components. As shown in FIG. 5, the connection rosette 10 can also only allow connection of scaffolding components via an arc segment 38 of less than 360°. In this case, too, the connection rosette 10 is preferably designed to be annularly closed in order to ensure, on the one hand, reliable fastening of the connection rosette 10 to a scaffold upright and, at the same time, a large load-bearing capacity of the connection rosette 10. The hollow embossings 24 are also arranged here on a circular line (cf. FIG. 1) in a ring around the axis Z and the recess 14.
[0044] The embodiment of the connection rosette 10 shown in FIG. 6 has a total of five first and two second through recesses 16, 18 for the connection of further scaffolding components. This design of the connection rosette 10 allows the connection of scaffolding components at a relative connection angle α with α<90°, here with α=60°, and at a further, smaller relative connection angle with β<60°, here approximately 30°.
[0045] FIG. 7 shows another connection rosette 10 with hollow embossments 24, which has exclusively first through recesses 16 for the connection of scaffolding components in the form of latches. The connection rosette 10 comprises a total of 6 such first through recesses 16, which are regularly spaced from one another around the central axis Z.
[0046] The connection rosettes 10 shown in FIGS. 6 and 7 allow, in addition to a classical right-angled connection of scaffolding standards, i.e. an orthogonal ground plan structure of the scaffolding, a polygonal scaffolding structure deviating from this, by which the scaffolding can be adapted in a simple manner to curved ground plans of buildings etc. The connecting rosette shown in FIG. 6 can be used to connect two diagonal braces in each case in order to couple a scaffold pole provided with the connecting rosette 10 to another scaffold pole or to mechanically fasten the latter to a building wall or the like.
[0047] FIGS. 9 and 10 show a scaffolding assembly 100 with a diagonal connection. The scaffolding assembly comprises a scaffolding post 40 with a connection rosette 10 as shown in FIG. 1 and with a scaffold component 42 shown partially only schematised with a broken line, which is detachably attached to the connection rosette 10. The scaffolding stem 40 is designed as a hollow profile in a manner known per se and has a circular cross-sectional shape. It is understood that the scaffolding post 40 may also have a cross-sectional shape deviating therefrom. The scaffolding stem 40 passes through the central recess 14 of the connecting rosette 10. The longitudinal axis L of the scaffolding stem 40 and the central axis Z of the connecting rosette 10 coincide. The connecting rosette 10 is welded to the scaffold upright 40, but can also be attached to the scaffold upright 40 in another suitable manner. It should be noted that the side surface 12a of the connecting rosette 10 provided with the indentations 28 of the hollow embossments 24 faces upwards (in the plumb direction), while the side surface 12b of the connecting rosette 10 provided with the elevations 26 faces downwards. This simplifies the assembly of scaffolding components to and the disassembly of scaffolding components from the connecting rosette 10. In addition, the load on the protrusions 26 of the hollow embossments 24 is significantly lower than if they were to point vertically upwards from the connecting rosette 10.
[0048] According to FIG. 9, the scaffolding component 42 is designed as a vertical diagonal with a hollow profile 44 and a clevis 46 attached to the hollow profile 44. The clevis 46 is arranged in its predetermined mounting position on the connecting rosette 10 of the scaffold upright 40. The clevis 46 comprises an upper and a lower claw 48a, 48b, between which a receiving gap 50 for the connecting rosette 10 is formed. In the assembly position of the scaffolding component 42 shown, its fork head 46 engages over the connecting rosette 10 on both sides in the axial direction. The connecting rosette 10 is thus arranged in sections in the receiving gap 50 of the fork head 46. Both claws 48a, 48b of the fork head 46 have contact surfaces 52 for the scaffolding stem 40 at their free end. The contact surfaces 52 preferably have a radius of curvature (not indicated in the drawing) corresponding to the radius of the scaffold tower 40 in order to provide the largest possible support for the fork head 44 on the scaffold tower 44 in the radial direction. In FIG. 10, the hollow profile 44 of the scaffolding component 42 is not shown for illustration reasons.
[0049] Note that in FIGS. 9 and 10, a securing pin which engages through the clevis 46 and one of the second through recesses 18 of the connecting rosette 10 to secure the framework component 42 in its mounted position on the connecting rosette 10 is not shown.
[0050] In the embodiment shown, the fork head 46 has two positioning pins 54 on its upper claw 48a. These positioning pins 54 are each arranged laterally on the upper claw 48a of the fork head and can be welded to it, for example. The positioning pins 54 each engage in a recess 28 of one of the hollow embossments 24 of the connection rosette when the fork head 46 is arranged in its predetermined assembly position on the connection rosette 10. On the one hand, this makes it easier to position the clevis 46 of the framework component 42 in its predetermined assembly position on the connecting rosette 10. In addition, the engagement of the positioning pins 54 in the recesses of the hollow embossments 24 enables the fork head 46 to be seated without play or substantially without play in a direction parallel to the upper side surface 12a of the connection rosette 10. It should be noted that the positioning pins are in any case shorter than the recesses 28 of the hollow embossments 24 of the connecting rosette 10, so that these are not subjected to pressure in the axial direction.
[0051] FIG. 11 shows the coupling point of the clevis 46 to the connecting rosette 10 of FIG. 10. The positioning pins 54 can be partially embedded in the material of the fork head.
[0052] FIG. 12 shows a side view of the scaffolding assembly 100 with diagonal connection according to FIG. 10. The fork head 46 engages with its lower claw 48b over two of the elevations 26 of the hollow embossments 24 of the connection rosette 10 in an axial direction. These protrusions 26 protrude from the connection rosette 10 in an axial direction onto the lower claw 48b of the clevis 46. The functional thickness DF of the connecting rosette 10 is only slightly smaller than the gap width b of the receiving gap 50. As a result, the clevis 46 is arranged in its predetermined mounting position on the connecting rosette 10 with only a small axial clearance. The axial play S of the fork head (clevis head) 46 of the framework component 42 mounted on the connecting rosette relative to the connecting rosette 10 corresponds to the difference between the gap width b and the functional thickness DF of the connecting rosette 10, cf. FIG. 4. The depth of engagement of the positioning pins 54 in the recesses 28 of the respective hollow embossments 24 of the connecting rosette 10 is necessarily (minimally) selected to be smaller than the axial play S in order to be able to mount and dismount the fork head 46 on the connecting rosette 10 in a simple manner. A locking or securing element 56, shown in FIG. 12 with a dotted line, serves to secure the fork head 10 in its predetermined assembly position on the connecting rosette 10. The securing element 56 is designed here as a locking pin and engages through the fork head 46 and one of the second through recesses 18 of the connecting rosette 10. The securing element 56 absorbs normal forces and shear forces of the scaffolding component 42 acting on the connecting rosette 10. Unwanted shearing or deformation of the positioning pins 54 of the fork head 46 can thus be reliably counteracted.
[0053] In FIG. 13, the clevis 46 of the scaffold component 42 of the scaffolding assembly 100 with diagonal connection is shown in a frontal view. The fork head 46 comprises the upper and lower claws 48a, 48b, between which the receiving gap 50 for the connection rosette 10 is filleted. Both claws 48a, 48b of the fork head 46 have the contact surfaces 52 for the scaffold stem at their free end. In the embodiment shown, the fork head 46 has two positioning pins 54 on its upper claw 48a. These positioning pins 54 are each arranged laterally on the upper claw 48a of the fork head 46 and may be welded thereto, for example. The positioning pins 54 engage in the space of the receiving gap 50 or reduce the gap width b of the receiving gap 50 in partial areas.
[0054] FIG. 14 shows another scaffolding assembly 100 with a latch connector. The scaffolding assembly 100 comprises a scaffolding post 40, a connecting rosette 10 arranged on the scaffolding post 40, and a scaffold component 42 detachably attached to the connecting rosette 10, the scaffold component 42 being in the form of a horizontal latch. The scaffolding component, i.e. the horizontal latch, has a latch head 58 with a coupling hook 60 which, in the shown assembly state of the horizontal latch on the connecting rosette 10, engages in a first through recess 16 of the connecting rosette 10 (cf. FIG. 1.
[0055] The locking head 58 rests on the connecting rosette 10 and can be supported on the scaffolding stem 40 via contact surfaces 52 which face the scaffolding stem 40 in the radial direction. A securing wedge 62 may serve to secure the scaffolding component 42 in its mounting position hooked onto the connecting rosette 10. The latch head 58 comprises at least one positioning pin 54, which may be integrally formed with the latch head 58 as a forged part. Alternatively, the at least one positioning pin 54 may be welded to the latch head 58. Each positioning pin 54 of the latch head 58 is preferably arranged laterally on the latch head 58. In the predetermined mounting position of the horizontal bolt on the connecting rosette 10, the at least one positioning pin 54 engages in a recess 28 of one of the hollow embossments 24 of the connecting rosette 10. As a result, the latch head 58 of the framework component 42 can, on the one hand, be precisely positioned in a simplified manner in its predetermined assembly position at a connection position A of the connection rosette 10 provided for the connection of the horizontal latch and, at the same time, be aligned in the predetermined manner relative to the connection rosette 10. Furthermore, the engagement of each positioning pin 54 of the horizontal latch in the recess 28 of a hollow embossment 24 of the connecting rosette 10 enables the latch head 60 to be seated without play or substantially without play in a direction parallel to the upper lateral surface 12a of the connecting rosette 10. Thus, each positioning pin 54 of the horizontal bolt can also transmit thrust forces, i.e. forces in a direction parallel to the upper lateral surface 12a of the connecting rosette 10. It should be noted that each positioning pin 54 of the framework component 42 designed as a horizontal latch can have a length I that is smaller than the depth of the recess 28 of the relevant hollow embossment 24 of the connecting rosette 10, or can also be equal to or greater than said depth. In this way, the positioning pin 54 can also be subjected to pressure in a direction axial to the longitudinal axis L of the scaffolding post.
