EP2643533A2

EP2643533A2 - Arrangement of a scaffolding component and of a vertical scaffolding element

Info

Publication number: EP2643533A2
Application number: EP12769883.5A
Authority: EP
Inventors: Helmut Kreller
Original assignee: Wilhelm Layher Verwaltungs GmbH
Current assignee: Wilhelm Layher Verwaltungs GmbH
Priority date: 2011-06-01
Filing date: 2012-05-31
Publication date: 2013-10-02
Anticipated expiration: 2032-05-31
Also published as: WO2012163348A2; WO2012163349A2; EP2643533B8; WO2012163340A1; AU2012265292B2; WO2012163348A3; WO2012163349A3; AU2012265292A1; US9080335B2; BR112013021999B1; EP2530219A1; ES2527764T3; AU2012265293B2; PL2530219T3; BR112013021969B1; AU2012265293A1; EP2530219B1; DE102012104697A1; BR112013021969A2; US20140030009A1

Abstract

The invention relates to an arrangement (230) of a scaffolding component (45) having a connection head (61) and of a vertical scaffolding element (41) extending in the direction of a longitudinal axis (47). On this scaffolding element is fastened a projection (44) which extends transversely to the longitudinal axis (47) of the scaffolding element (41) away from the latter and onto which the connection head (61) is plugged. The projection (44) has an upper boundary surface (48) and a lower boundary surface (49). The projection (44) has an aperture (55.1) for plugging through a wedge (62), which aperture is arranged between an inner part (260) of the projection (44) in the transverse direction (118) and an outer part (97) of the projection (44) in the transverse direction (118) and which extends vertically between the upper and the lower boundary surface (48, 49). The connection head (61) has an upper head part (74) with an upper wedge opening (80) and a lower head part (75) with a lower wedge opening (81). The wedge is plugged, in a locking position (88), through the two wedge openings (80, 81) and through the aperture (55.1). Between the upper head part (74) and the lower head part (75) there is arranged a slot (67) which is open towards the front (79) and with which the connection head (61) is plugged onto the projection (44). The slot (67) is configured with a shoulder (100) of the upper head part (74) which extends downwardly from horizontal upper slot surfaces (95.1) formed in an insertion region (93.1) of the slot (67) and which is arranged above the horizontal upper boundary surface (48) of the outer projection part (97), which shoulder is bounded downwardly (115) with a horizontal shoulder slot surface (107) of the slot (67) via which the shoulder (100) is supported with its surface on the horizontal upper boundary surface (48) of the projection (44), with the result that a first spacing (151.2) of the upper end (152) of an upper contact support surface (65.1) of the upper head part (74) from a horizontal centre plane (51) of the projection (44) and a second spacing (153.2) of the lower end (154) of a lower contact support surface (65.2) of the lower head part (75) from the horizontal centre plane (51) of the projection (44) are of the same size.

Description

ARRANGEMENT OF A BUILDING PART AND

VERTICAL FURNITURE ELEMENTS

The invention relates to an arrangement of a scaffold component having a connection head and a vertical scaffolding element extending in the direction of a longitudinal axis, to which a protrusion extending transversely, ie in a transverse direction, away from the longitudinal axis of the scaffold element, ie outwards, is fastened, on which the connection head with the formation of a detachable connection, in particular a connection node, is plugged, wherein the projection has an upper boundary surface and a lower boundary surface, which on both sides ei ^¬ ner imaginary, in particular in the amount of half the verti ^¬ len thickness of the projection extending , Horizontal center plane of the projection extend, and wherein the projection has at least one opening for the passage of a wedge, which is disposed between a transversely inwardly projecting part of the projection and a transversely äuße ^¬ Ren projection part of the projection and which extends vertically between the upper and the lower bounding surface, and wherein the connection head has a obe ^¬ ren head portion with an upper wedge and a lower opening Head having a lower wedge opening, for the plug-in by the wedge openings wedge, and wherein the connection head has a contact part, the verti ^¬ cal, preferably parallel to the vertical axis, erstre- ckende contact support surfaces having bearing wall parts for abutment with corresponding, vertically extending outer surfaces of the vertical framework element, and wherein the upper head portion an upper abutment support surface of the abutment support surfaces for abutment with a corresponding upper outer surface of a above the Vor ^¬ jump extending scaffold element Part of the vertical frame member, and wherein the lower head portion has a lower abutment support surface of the abutment support surfaces for abutment with a corresponding lower outer surface of a extending below the projection Gerüstele ^¬ ment portion of the vertical structural element, and where ^¬ between between the upper head and de In the lower head part, a slot open towards the abutment support surfaces is arranged, with which the connection head is attached to the projection, and wherein the slot is in a front

Insertion region for the projection upwards with horizontal upper slit surfaces of the upper head part and downwardly bounded with horizontal lower slit surfaces of the lower head part, which are parallel or substantially parallel to each other on either side of an imaginary horizontal

And wherein the slot is laterally bounded transversely with vertically extending slot surfaces of a slot bottom, and wherein between the upper wedge opening and the lower wedge opening a passage for the wedge is formed, which extends through the upper head part and through the lower head portion extends below the intersection of the slot and which is approximately aligned with the Durchbre ^¬ tion of the projection, and wherein the wedge is inserted through the passage and through the opening of the projection, so that the connection head of the scaffold ^¬ component is positively locked with the help of the located in a locking position wedge with the projection GE, said wedge for unlocking the connection head of the projection through the Passage is at least up to over the upper boundary surface of the projection or over the projection is movable, so that then the connection head is removable from the projection, and wherein either already when the wedge is in the locking position or when the Wedge is in the Verriegelungsstel ^¬ ment and the connection head is braced by means of the wedge with the vertical frame member, the upper head part with the upper abutment support surface on the upper outer surface of the scaffold element and the lower head part with the lower plant support Support surface on the lower outer surface of the skeleton element, and wherein the upper head part by an upper slit surface of the slit be ^¬ excluded support body on the upper limiting surface of the projection is seated in a support position, and wherein the upper bearing support surface to an upper end extends with a in the supporting orientation, vertically upwards, disposed at a first distance from the horizontal center plane of the slot and at a first distance from the horizontal center plane of the projection, and wherein in the Ab ^¬ supporting position the lower bearing support surface vertically un ^¬ ten up to a extending lower end, which is arranged at a two ^¬ th distance from the horizontal center plane of the slot and at a second distance from the horizontal center plane of the projection, and wherein the outer protrusion part of the projection one, preferably essenli ^¬ chen level, inwardly facing, vertical wedge support surface for the wedge having the opening, preferential in the transverse direction, bounded outwardly and extending between the upper boundary surface and the lower boundary surface of the projection parallel to or along or in the direction of a vertical axis, and wherein the upper head portion on a transverse inside

Side of the passage has a, preferably substantially flat, transversely outwardly extending, parallel to the vertical axis extending, vertical, upper wedge support surface for the wedge, and wherein the lower head portion on a transversely inner side of the passage a, preferably substantially flat, transversely outwardly facing, vertical axis extending lower wedge support surface for the wedge, and wherein the wedge has a first wedge leading edge having a, Preferably substantially ebe ^¬ ne, obliquely in the direction of inwards and downwards at an inclination angle to the vertical axis along a sloping axis extending, outwardly facing contact surface which, when the wedge is in the locking position and the connection head with Help of the

Wedge is clamped to the vertical frame member and / or when the wedge is in the locking position, only locally, preferably in the region of an upper recess edge of the recess of the projection, in particular point or line, on the vertical

Wedge support surface of the outer projecting part is present, and wherein the wedge has a transversely inwardly facing second wedge front edge having a, preferably substantially flat, extending parallel to the vertical axis vertical contact surface, with the vertical upper wedge Support surface of the upper head part and with the vertical lower wedge support surface of the unte ^¬ ren head part such that the vertical Contact surface of the wedge both on the vertical upper wedge support surface of the connection head and on the ver ^¬ tical lower wedge support surface of the connection head, preferably before ^¬ flat, adjacent, relative to both the vertical upper wedge support Surface as well as to the vertical lower wedge support surface, parallel to or along or in the direction of the vertical axis, is displaceable.

For example, DE 24 49 124 A1, EP 0 423 514 A2, EP 0 276 487 A2, DE 198 06 093 and EP 0 936 327 A1 disclose framework constructions with connection nodes of a modular framework, on whose stems in FIG Axial direction in a grid spacing from each other perforated discs are fixed to connect scaffolding components in the form of connection, holding and / or support elements, such as longitudinal bars, crossbar and / or diagonals. Such a modular framework has been known for many years as the LAYHER Allround scaffolding system. The connection nodes or framework nodes of this modular framework are also known as LAYHER Allround Force Nodes.

In these connection nodes, a particularly stable, releasable connection between the connection heads having scaffolding components, in particular rod elements, such as scaffolding tube or scaffold bar, and the versehe with the perforated discs ^¬ scaffold stems achieved. For this purpose, the respective, provided with a horizontal Schlit z connection head of a Ge ^¬ scaffolding component, plugged onto one of the perforated discs of the scaffold handle and locked there by means of a wedge and braced against the scaffold handle by usually the

Wedge is wedged by a hammer blow from above. In these designs, the wedge is built into the locking position such that it rests circuit head with its prede ^¬ reindeer, pointing in the direction of the scaffold stem, straight leading edge on corresponding straight inner edges of the check, while the wedge with its rear ^¬ reindeer, from the Scaffold stem pointing away, oblique trailing edge punctiform or horizontal line-shaped abuts a vertically or vertically extending inner edge of an aperture of the perforated disc.

From WO 94/16172 A an arrangement or releasable connection in the form of a similar connection node or framework node has become known, in which a perforated disc made of aluminum is used. In this arrangement, the wedge is in its locking position, in contrast to known connection nodes, as for example from the already mentioned DE 24 49 124 AI, EP 0 423 514 A2, EP 0 276 487 A2, DE 198 06 093 and EP 0 936 327 AI go out, installed 180 degrees rotated about its longitudinal axis, so that the facing away from the scaffold stalk radially away, rear or outer vertical wedge-front edge surface on the front or radially outer, vertical inner wall of the recess Perforated disk rests, while the facing towards the scaffolding handle, front or inner wedge-front edge of the wedge, abut against corresponding oblique, rearward or radially outwardly and downwardly inclined inner edges of the connection head. In this construction, a tubular fastening sleeve is provided, on which a perforated disk extending perpendicularly to the longitudinal axis of the sleeve is welded, which surrounds or surrounds the sleeve in the circumferential direction. Provided with the perforated disc mounting sleeve is about Längsrip ^¬ pen and grooves form-locking against rotation out on a stand pipe attached and welded to this. The connection head has at its upper head part upper At ^¬ location-supporting surfaces for bearing on the outer surface of the fastening sleeve and at its lower head portion lower investment supporting surfaces for bearing on the outer surface of its mountings ^¬ supply sleeve. The height of the upper abutment support surface above the horizontal center plane of the slot and above the perforated disc or its horizontal center plane is smaller than the height of the lower abutment support surface below the horizontal center plane of the slot and below the perforated disc or their horizontal center plane. Further, the upper abutment support surface is smaller than the lower abutment support surface. Characterized conditionally occurs in the plugged onto the rosette and locked with the A ^¬ impact wedge and strained connection head at different or to unbalanced force and Momen- ten-transfer conditions and accordingly different static characteristics of the connection for positive and negative bending stress. However, for safety reasons, the poorer characteristic values must always be used for the static design or calculation.

From DE 38 24 823 AI or from the parallel EP 0 351 703 A2 a connection training for horizontal beam of scaffold floors on scaffoldings has become known, with vertical stems and attached thereto in a grid spacing horizontal perforated discs and it with the help of connecting heads with horizontal disc Slits releasably attached support bars. In this construction, the connecting heads having support bars as a whole made of light metal. To one of the forces occurring in the connection area under optimal conditions receiving and Furthermore, to provide ^¬ further conductive connection head of light metal ^¬ avail ^¬ supply, which has suitable, space and material-saving configurations that allow him to weld the material values as possible not influencing the light metal of the U-profile support bar, is provided inter alia To design the disc slot in the area of its inner bottom tapering to the extent of the disc thickness with a sloped, upper inner boundary. This is bounded by an obliquely downward and rearward or outwardly extending inclined surface which adjoins the upper lead-in area to the rear or the outside. This is to be achieved that in the region of maximum forces in the connection head an increased accumulation of material is created, which is greater than in conventional steel connection heads of this type, so that the

Tensions are reduced. Furthermore, it should be achieved that the perforated disc has exactly the place, so only a very small game remains, but still the disc slot in the insertion is sufficiently high to easily attach the connection head on the perforated disc can. Again, the heights of both sides of the slot formed bearing support surfaces of the strut by means of a wedge tense connection head are different in size. As a result, it is also possible here for correspondingly different or asymmetrical forces and forces

Torque transmission ratios with positive bending stress come up or in negative bending stress down. Apart from that, the connection head is supported in this detachable connection, in a locked and clamped with the wedge state, with its provided in the slot bottom inclined inner boundary on the inclined surface point or line on the top of the perforated disc, so in this area accordingly Undefined investment, positioning and leadership conditions and unfavorable Kraftübertragungsver ^¬ conditions exist. In addition, the inclined surface of the inclined upper inner boundary of the slot also causes the terminal head to easily slip off the perforated disc when the terminal block provided with the support bar is bent downwardly relative to the stem.

It is an object of the invention to provide an arrangement of the type mentioned above, with advantageous possibilities for easy wrenching of the wedge and for a long time safe repeated clamping of the connection head with the projection or with the vertical framework element , As well as favorable positioning, alignment, Aufsteck- and power transmission ^{¬ conditions} , improved static characteristics of the connec ^¬ tion or the connection node has.

This object is achieved by the features of claim 1 or in an arrangement of the type mentioned in particular by the fact that the slot in the direction of its slot bottom and / or in the region of its slot bottom and / or in a rear portion of the slot with a beneath the horizontal upper slot surfaces of the slot formed in the insertion area for the projection, the shoulder of the upper head part is delimited downwardly with a horizontal upper heel and slot surface of the slot, and in the support position above the horizontal upper boundary surface of the outer projection part, in particular an edge web, the projection arranged paragraph in the support position and at least when the wedge is in the locked position and the connection head with Help the wedge is clamped to the vertical frame member or even when the wedge is in the locked position, with its then parallel to the horizontal upper boundary surface of the projection extending paragraph slot surface, supported on the upper boundary surface of the projection surface, so that the first distance of the upper end of the upper abutment Stützflä ^¬ che of the upper head portion of the horizontal center plane of the projection and the second distance of the lower end of the lower abutment support surface of the lower head part of the

Horizontal center plane of the projection are the same size.

Characterized in that the outer projection part has a, preferably substantially flat, inwardly facing, vertical wedge support surface for the wedge, which limits the Durchbrech ^¬ ung, preferably in the transverse direction, to the outside and which between the upper boundary surface and the lower boundary surface of the projection extends parallel to or along or in the direction of a vertical axis, and that the upper head portion on a transversely ^inner ren side of the passage one, preferably substantially flat, in the transverse direction outwardly facing, parallel to the vertical axis extending, vertical, upper wedge support surface for the wedge, and that the lower ^¬ head part on a transverse inner side of the passage one, preferably substantially flat, in the transverse ^¬ outward direction pointing, parallel to the vertical ^¬ len axis extending, vertical, lower wedge support surface for the wedge, and that the K eil has a first wedge front edge, the one, preferably substantially planar, obliquely extending in the direction inwards and downwards at an inclination angle to the vertical axis along a sloping axis extending, outwardly facing contact surface which, when the wedge is in the Verriege ^¬ ment position and the connection head is braced by means of the wedge with the vertical frame member and / or when the wedge is in the locking position, only locally, preferably in the region of an upper

Ausnehmungsrandes the recess of the projection, insbeson ^¬ point or line, rests against the vertical wedge support surface of the outer projection part, and that the wedge has a transversely inwardly facing second wedge front edge, the one, preferably substantially ^¬ union level, parallel to the vertical axis erstre ^¬ ckende vertical contact surface which corresponds with the verti ^¬ cal upper wedge support surface of the upper head part and with the vertical lower wedge support surface of the lower head part such that the vertical Kontaktflä ^¬ surface of the wedge both to the vertical upper wedge supporting surface of the connection head and on the vertical un ^¬ direct wedge-support surface of the connecting head, preferably flat, adjacent, relative to both the vertical upper wedge supporting surface as well as the vertical lower wedge

Support surface parallel to or along or in the direction of the vertical axis, is slidable, it comes when Einschla ^¬ conditions of the wedge to only relatively low ^{Reibungskräf ¬} th, so that the impact of the wedge comparatively easy, in particular by a hammer blow possible is.

Furthermore, can be avoided that even after a multiple wrapping and re-release of the wedge at each time inserting the wedge always safe clamping of the connection head with the projection of the vertical scaffold member or with the vertical Gerüstele ^¬ management is ensured possible or , Characterized in that the slot in the direction of its slot bottom and / or in the region of its slot bottom and / or in a rear portion of the slot with a extending below the formed in the insertion area for the projection horizontal upper slot surfaces of the slot extending paragraph of the upper Head section is designed, which is bounded below with a horizontal upper paragraph slot surface of the slot, wherein the in the support position above the horizontal upper boundary surface of the outer projection portion of the projection ^¬ ordered paragraph in the support position and at least then, when the wedge is in the locking position and the connection head is braced by means of the wedge with the verti ^¬ len framework element or even when the wedge is in the locking position, with its parallel to the horizontal upper boundary surface of the projection extending paragraph Slot ^surface , on the upper boundary surface of the projection surface ^¬ ig supported, so that the first distance of the upper end of the upper abutment support surface of the upper head part of the

Horizontal center plane of the projection and the second Ab ^¬ stand of the lower end of the lower abutment support surface of the lower head portion of the horizontal center plane of Vor ^¬ jump are equal, can equal or symmetrical force and torque transmission ratios and accordingly ^¬ speaking the same static characteristics of the compound at a positive bending stress upward and be achieved at a negative bending stress down. Furthermore, let thereby ver ^¬ real-defined investment, positioning rungs-, management and power transmission ratios. In particular, lateral forces can be better transmitted from the connection head to the projection. In addition, the measures mentioned may conditions are kept particularly low in the connection head. Due to a reduced clearance between the slot and the projecting projection in this and the flat contact conditions of the inserted into the slot projection both downwards and upwards, the projection can be "taken along" in bending stresses both down and up well when the connection head having scaffold component, such as a scaffold bar, is bent downwards or upwards, because the projection now both down and up advantageous in the bending can participate in such a way that both downwards and upwards greater bending forces or Moments are transferable than was previously the case.This construction allows a connection node or a compound with better overall static characteristics.

According to a very particularly preferred embodiment of the invention can be provided that the paragraph in the region of a perpendicular to the horizontal center plane of the slot formed extending in the longitudinal direction of the upper wedge opening, passing through the upper wedge opening, preferably in the transverse center of the connection head ^¬ run , imaginary, vertical plane, in particular Vertikalsymmet ^¬ rieebene the symmetrically designed connection head, is arranged. This can be another improvement in

Be achieved in the sense of the above advantages and it can be, in a further embodiment, a particularly advantageous combination with or integration into a slit forward over the slot arranged above the slot wedge support body realize the wedge support surfaces for vertical Supporting the lower wedge end of the wedge has - against an un ^¬ intended moving the wedge vertically downwards in to avoid or prevent a blockage position in which a plugging of the connection head with its slot in a substantially horizontal Aufsteckrich- tion would be blocked on the projection - or against unintentional movement of the wedge vertically below the intersection of the slot to a Placing the terminal head with its slot in a substantially horizontal AufSteckrichtung on the projection without blocking by the wedge to allow.

Furthermore, it can be provided that the shoulder is the vertical plane containing formed on both sides of the vertical plane and / or that the paragraph extends continuously between upper side wall parts. Preferably, the paragraph can be made in one piece with the upper side wall parts or connected. As a result, a further improvement in terms of the above advantages can be achieved, with a simple and easy plugging or pushing on the connection head with its slot on the projection is possible. The last-named measure also makes it possible to achieve stiffening, in particular of the upper head part, of the connection head, so that the static characteristic values of the connection can be improved overall.

According to a particularly advantageous embodiment of the invention can be provided that the connection head is limited with side wall parts which have a wedge-like manner on a Zen ^{¬ center} , in particular a central axis, tapered vertical outer surfaces. The upper head portion of the connection head can ^¬ having upper vertical outer surfaces of the upper side wall portions, preferably of said side wall parts is limited, the pointing with the downward horizonta- len, upper slot surfaces of the slot can be limited. Preferably, the lower head part with lower Ver ^¬ tikalflächen of lower side wall parts, in particular of said side wall parts to be limited, the pointing with the upward horizontal lower slot surfaces of the slit may be limited. Particularly preferably, the heel-slot surface of the shoulder opposite to the vertical outer surfaces of the upper side wall parts in an inward direction, ie in the interior of the connection head or in the direction of an interior of the connection head, be arranged offset. As a result, weight can be saved and it is easier plugging or Aufschie ^¬ ben the connection head in a direction perpendicular to the vertical plane or perpendicular to the transverse direction and perpendicular to the vertical axis or in the tangential direction of the projection possible. This is particularly advantageous if it is not possible for a plugging or pushing the connection head in the forward direction or in the radial direction of the projection, for example, because there is no sufficient space available or because the scaffolding component already at his from the An end pointing away ^¬ end, in particular by means of a second connection head and a second wedge already on a projection of another vertical structural element by means of the inserted through the opening second

Wedge is fixed such that the frame member is pivotable in a horizontal plane relative to the projection.

The heel-slot surface of the shoulder can be arranged offset in relation to the horizontal upper slot surfaces of the upper side wall parts in the direction inwards, ie in the interior of the connection head. As a result, a further improvement in the sense of the above le be achieved and the so-designed connection head is particularly simple and inexpensive to produce.

According to a preferred development it can be provided that the heel can be provided with lateral insertion bevels. These can each be seen ver ^¬ with an inclined surface, which extends from the horizontal paragraph slot surface of the paragraph obliquely upward and laterally to the respective vertical outer surface of the respective upper side wall portion.

According to a particularly preferred embodiment of the invention can be provided that the paragraph is provided with a front insertion bevel. This may be provided with an inclined surface which extends from the horizontal paragraph slot surface of the paragraph obliquely forward or inward and upward.

These measures further facilitate the attachment of the connection head with its horizontal slot on the projection or the insertion of the projection into the horizontal slot of the connection head.

The aforementioned inclined surfaces may be one, preferably about 10 to 30 degrees, in particular about 20 degrees amount

Have angles of inclination to the horizontal or to the paragraph slot surface.

According to a particularly preferred embodiment of the invention can be provided that the heel-slot surface of the paragraph, with which it is supported in the Abstützla ^¬ ge area on the upper boundary surface of the projection, parallel to the horizontal center plane of the Projection and / or parallel to the horizontal center plane of the slot extends. This can be realized especially before ^¬ some exemplary positioning and orientation conditions over a long period of use.

Preferably, the projection is plate-shaped or disc-shaped and / or the upper boundary surface and the lower boundary surface of the projection parallel to each other, preferably substantially flat, be formed. This allows a simple plugging of the connection head on the projection and a simple removal of the connection head of the projection and it can in a cost effective manner, with low weight, very particularly advantageous Verbindungsmög- possibilities and favorable power and torque transmission ratios be achieved.

Furthermore, it can be provided that the heel-slit surface of the area in the support position on the upper boundary surface of the protrusion surface supporting paragraph in a vertical first Schiit zflächen distance below the provided in the lead-in area for the projection horizontal upper slit surfaces of the slot and that the under which extend parallel to the horizontal upper slot surfaces extending horizontal lower slot surfaces of the slot parallel to the upper be ^¬ grenzungsfläche extending lower boundary surface of the projection in a vertical second slit area space, wherein the first Schiit zflächen-Ab - was the same size as the second Schiit zflächen-Ab ^¬ stood. This can ensure that both in positive bending stress upwards and in negative bending stress down the projection by the Keil is "activated" better, so that the forces at all ^¬ be neuter transferred through the wedge of the connection head in both Be ^¬ anspruchungsrichtungen equally well in the lead.

According to a particularly preferred embodiment, it can be provided that the horizontal upper slit surfaces of the upper head part and the horizontal lower slit surfaces of the lower head part in a first slot height corresponding distance, parallel to each other, on both sides of the horizontal center plane of the slot he ^¬ stretch, the to each of said horizontal slit surfaces has a spacing substantially equal to half the first slit height, and the first distance of the upper end of the upper abutment support surface of the upper head portion from the horizontal center plane of the slit and the second distance of the lower end of the lower abutment Support surface of the lower head portion of the horizontal center plane of the slot are the same size. As a result, even more improved static characteristics of the connection or of the connection node can be achieved. Also, a computational design of the connection head or the connection node can be further simplified.

According to a particularly preferred embodiment it can be provided that the horizontal center plane of the slot and the horizontal center plane of the projection in the Ab ^¬ support layer substantially coincide and form a common plane. This can be achieved advantages another verb ^¬ provement in the sense of the foregoing. According to a preferred embodiment it can be provided that the upper abutment support surface of the upper head part and the lower abutment support surface of the lower head part are the same size. In this way, particularly favorable force and torque transmission ratios can be realized, whereby substantially identical static characteristic values of the connection can be achieved both with positive and with negative bending stress. A further improvement in terms of the above advantages can be achieved if the upper abutment support surface of the upper head portion and the lower abutment support surface of the lower head portion symmetrical to the horizontal center plane of the projection and / or symmetrical to the horizontal Mitten plane of the slot are formed.

Unless otherwise indicated, the directional indication "backwards" means a direction transversely, in particular radially, to the longitudinal axis of the vertical framework element, away therefrom or opposite to the direction of attachment, in which the connection head projects with its abutment support surfaces, ^Unless otherwise indicated, the directional indication "forward" means a direction transversely, in particular radially, with respect to the longitudinal axis of the vertical structural element, towards the latter or in the opening direction, in which the connection head with its plant support surfaces ahead, with its slot is plugged onto the projection. Unless otherwise indicated, is provided with the directional indication ^¬ "outwardly" a direction transverse, ie in a transverse direction, meaning to the longitudinal axis of the frame element away from it. Otherwise indicated, is connected to the Directional indication "inwards" a direction transversely, ie in a transverse direction, to the longitudinal axis of the scaffold element to this meant.The vertical axis may preferably be arranged parallel to the verti ^¬ cal or vertical.

In the scaffolding part may be a rod member to act ^¬ particular a scaffolding tube and / or a scaffold bar or a console. The scaffolding component can be provided with at least two connection heads, which can be designed the same or different. The connection heads may be provided at mutually away facing ends of the frame member. The scaffolding component may be provided with a profile, for example with 0 or U cross-section, with a

Rod element or with a tube, in particular with a round tube, be formed, which eintei ^¬ lig or multi-part, in particular by welding, the verbun ^¬ can be with the connection head.

The vertical structural element can be a, preferably cylindrical, scaffolding tube, in particular a circular cylindrical circular tube. The vertical scaffolding element can be a component, for example a sleeve or a tubular part, which can be fastened to a scaffold post or stand. The vertical scaffolding element can be a scaffold post or stand or a frame constructed or formed therefrom, for example setting frames or façade frames.

The projection may extend perpendicularly and / or radially to the longitudinal axis of the vertical framework element. The projection may partially or completely embrace the vertical framework element. The projection may be a rosette, preferably a perforated disc. This can be provided in a known manner with a plurality of recesses, in particular in the form of through holes. These can in turn be arranged at equal circumferential angles, preferably of 45 degrees, at a distance from each other. In addition, small and large recesses may be provided in a likewise known manner, which may preferably be arranged alternately in the circumferential direction.

The scaffold component and / or the connection head and / or the scaffold element and / or the protrusion and / or the wedge preferably consist of or consist of metal. The connection head may preferably consist of malleable cast iron, cast steel or aluminum. The scaffold component and / or the scaffold element and / or the projection and / or the wedge may or may consist of steel, in particular of galvanized steel or of aluminum. According to a particularly preferred combination, it may be provided that the projection and the vertical frame member and the wedge, preferably of galvanized steel and in that the connection head made of cast steel or cast Temper ^¬ exist.

Preferably, the terminal head may be bounded with side wall parts which have wedge-like on a center-facing vertical outer surfaces. The vertical outer surfaces may include a wedge angle, preferably 40 to 50 degrees, more preferably about 43 to 46 degrees, preferably about 44 degrees or 45 degrees. The connection head can have a connection part which is firmly connected to the framework component. The slot of the connection head may preferably extend to the connection part.

If the connection head is delimited by side wall parts which have wedge-like vertical ^outer surfaces tapering towards a center, the slot can not only be open to the contact support surfaces or to the contact side, ie to the front, but also be open to the vertical outer surfaces.

Preferably, the wedge is made of flat material and has a substantially constant wedge thickness. Preferably, the wedge is captively connected to the connection head. For this purpose, the wedge in the region of one of its wedge ends or in the region of its two wedge ends or on a wedge end or on both wedge ends, be provided with or in each case with a captive. This can be formed with a thickening. As a captive can be provided a pin or a rivet. Preferably, the wedge may consist of flat material in a known manner and may be provided at its lower wedge end with a rivet which can protrude with at least one rivet head laterally or transversely over the flat material of the wedge.

Preferably, the upper wedge opening can be designed as a longitudinal slot extending from the rear to the front, in particular containing the vertical ^plane . Preferably, the wedge opening or the longitudinal slot may have parallel slot walls which may extend on either side of the vertical plane. The slot walls may have a slot width corresponding distance from each other. This distance or the slot width is preferred only slightly larger than the wedge thickness of the wedge, so that the wedge is then guided with only a slight lateral play in the wedge opening. The connection head and the frame component can be connected in several parts or in one piece. The scaffold component and the connection head can be produced in one piece or in one piece. The connection head can be molded onto the frame component.

At least two of the subsequent parts of the connection head, if present, can be made in one piece or in any combination: the upper head part, the lower head part, the abutment part, the connection part, the wedge support body, the heel and / or wedge-pivot abutment.

Using a connection head of the invention with an inventive wedge to form an assembly of the invention or releasably connecting a particularly advantageous method for fastening may of at least one connection head having scaffolding ^¬ implemented partly on a vertical scaffolding element ^¬ to which as well as a scaffolding part is at least one connection head subject of a German patent application of the same patent applicant with the title "scaffolding part with at least one connection head and method for Fixed to ^¬ supply of at least one connection head having Ge ^¬ rüstbauteils to a vertical scaffolding element", which at the same filing date as the present here patent applica ^¬ dung at the German Patent and trademark Office filed wor ^¬ the content of this German patent application is at this point for convenience and to avoid. is fully incorporated by reference in its entirety in the present patent application by reference or inclusion. So accordingly to the in ^¬ just said German patent application with all the technical features, both individually and in any combination, as far as this executable, fully integrated into the Offenba ^¬ tion of the invention of the present patent application here.

Further features, advantages and aspects of the invention can be taken from the following description part, in which advantageous embodiments of the invention are described ^¬ hand of the figures.

Show it:

Fig. 1 a portion of a scaffold with invention ^shown SEN arrangements or scaffolding components in a construction phase in which a standing in a secured position on a scaffold floor installer is just about to an inventive scaffolding part in the form of a frame bar, to form a leading railing, with attach one of its connecting heads according to the invention to a perforated disc of a scaffold post;

2 is an enlarged plan view of a erfindungsge ^¬ Permitted arrangement of scaffolding parts according to the invention with a partial section of a scaffold also called vertical scaffold ^¬ element, along the section lines 2-2 in Fig. 1. a three-dimensional view of a portion of an inventive arrangement or a terminal node according to the invention, wherein a scaffold component according to the invention is shown in a partial section; the arrangement according to the invention or the connection node according to the invention according to Figure 3 in a longitudinal section along the section lines 4-4 in Fig. 2; the arrangement or the connection node in a horizontal section along the section lines 5-5 in Fig. 4; an enlarged longitudinal section of the ^{Anschlußkop ¬} fes along the section lines 6-6 in Figures 10 and 14; an arrangement containing the scaffold component and a vertical scaffold ^¬ element in the form of a perforated disk verse ^¬ Henen scaffolding handle, wherein an end portion of the scaffolding component is shown in a horizontal starting position, starting from which the scaffold component with its on ^¬ closing head and the slot ahead, radially is attachable to a designated also as a projection of the orifice plate shown with a stem portion scaffold ^¬ stem, wherein the wedge from ^¬ supported with its lower end of a wedge to wedge supporting surfaces of a wedge-supporting base above the slot; Figs. 8 to 15

three-dimensional representations of the invention ^shown SEN connection head,

8 shows a view of the connection head obliquely from the front, the right and the top,

9 shows a view of the connection head obliquely from ^{behind ¬} th, right and above,

10 shows a front view of the connection head,

11 shows a rear or rear view of the connection head,

12 shows a side view of the connection head from the right,

13 shows the connection head according to FIG. 10 in a cross section along the section lines 13-13 in FIGS. 12 and 14, FIG.

Fig. 14 is a top view of the terminal head; and Fig. 15 is a bottom view of the terminal head;

Fig. 16 is a side view of a wedge according to the invention

FIG. 1 shows a section of a scaffold 40, which is also referred to as a modular scaffold. The framework 40 is constructed from ver tical ^¬ stems 41st The stems 41 form Vertika ^¬ le scaffolding elements. Each stem 41 extends vertically along a substantially straight longitudinal axis 47, thus forming a substantially straight bar element 41. The stems 41 are made of metal, preferably steel. However, the stems can also consist of light metal, in particular aluminum or aluminum alloys. The stems

41 are made of round tubes 46. The round tubes 46 have a substantially cylindrical outer cross section substantially over their entire effective length. Each stem 41 has at one of its free ends, preferably at its upper end, a pipe connector. Of the

Outer diameter of the pipe connector is slightly smaller than the inner diameter of the stem tube at the other end facing away from the pipe connector 41, so that on the pipe connector of a stem 41, a further handle 41 can be plugged. In this way, the scaffold can

40 are built over several floors.

On the stems 41 are in the axial direction 42, ie in the direction of the longitudinal axes 47 of the stems 41, in a, preferably about 50 cm amount, grid spacing 43 beabstand ^¬ stands more connecting elements in the form of rosettes or perforated discs 44, preferably by welding Attached to there scaffolding components 45 in the form of connection, holding and / or supporting elements, for example, longitudinal latch 45, crossbar and / or diagonals to connect. The

Diagonals and the cross bars are not shown in the figures. On or at the crossbars scaffolding floors 269 can be attached. Several framework fields 270.1, 270.2 can be set up. An installer 265 can assemble a scaffolding component 45 according to the invention from a position 266 secured against falling down. In this case, a leading railing 267 in the form of a hip or back railing 268 can be realized. The perforated discs 44 surround the stems 41 in full, but can only partially embrace the stems 41. The perforated discs 44 forming a projection extend transversely, ie in the transverse direction 118, to the longitudinal axis 47 of the stem 41 from the outer surface 54 of the stem 41 to the outside 52. The perforated discs 44 are formed with upper and lower boundary surfaces 48, 49 which are parallel to ^¬ each other extending and are substantially planar. Accordingly, 44 have the perforated disks to a constant in Wesentli ^¬ chen perforated disc thickness 50th The perforated disc thickness ^¬ 50 is preferably about 9 mm, in particular when the perforated disc 44 is made of steel. However, the perforated disc thickness 50 may also be slightly larger, for example, be about 10 mm, in particular if the perforated disc 44 made of light metal, for example aluminum. The boundary surfaces 48, 49 of the perforated disc 44 are formed pa ^¬ rallel to an imaginary center plane 51 of the perforated disc 44, which the perforated disc 44, viewed in the vertical direction or in the thickness direction 42, at the level of

Half of the hole thickness 50 cuts. Each perforated disc 44 extends in a direction 52 perpendicular to the longitudinal axis 47 of the stem 41 from the outer surface 54 of the stem 41 radially outward 52 away from it. Accordingly, the center plane 51 of the perforated disc 44 is normal to the longitudinal axis 47 of the stem. Each perforated disc 44 is provided in a conventional manner with a plurality of through-holes 55, which are also designated with openings 55. This means that each of these through holes 55 is completely bounded laterally by wall parts of the perforated disc 44. Each through hole 55 extends in ver ^¬ tical direction 42 between the formed on the top 57 of the perforated disc 44 upper boundary surface 48th and the lower boundary surface 49 on the underside 58 of the perforated disc 44. The through holes 55 are arranged in a known manner in each case equal circumferential angles 59 of 45 degrees from each other. In addition, in a likewise known manner, small and large openings

55.1, 55.2 provided, which are arranged alternately in the circumferential direction 60. The exact configuration of the perforated ^plates 44 results in particular from FIGS. 3 to 5. The perforated disks 44 are preferably made of steel, but may also consist of light metal, in particular of aluminum or aluminum alloys.

The framework 40 shown in the figures is constructed with erfindungsge ^¬ MAESSEN scaffold components 45 in the form of longitudinal bars 45 and transverse bars, as well as diagonal, where, in the

Figures only the longitudinal latch 45 are shown. These bars 45 are fully compatible with the previously known bars and thus fully compatible with the previous LAYHER Allround modular scaffolding system designed. This means that the inventive bolt 45 can be readily combined with the previous other scaffolding parts of this previous modular scaffolding system.

The scaffolding crucibles 45 according to the invention each have at their ends 56.1, 56.2 pointing away from each other a connecting head 61 according to the invention, by means of which the scaffold crucible 45 can be fastened to a respectively assigned perforated disc 44. For this purpose, each connection head 61 has a wedge 62 which is captively connected to the connection head 61, by means of which the respective one

Connection head 61 on a corresponding perforated disc 44 is fest ^¬ keilbar. The connection heads 61 can be at a Stabele ^¬ ment 53 of the framework construction made as a bolt 45 separately be attached parts. The scaffold bars 45 shown in the figures are multi-part or made of several parts Herge ^¬ , namely each of two connection heads 61 and a rod member 53. As a rod member 53 in the gezeig- th embodiments, a round tube 78 made of metal, preferably made of steel, used. However, it is understood that the invention is not insbesonde ^¬ re not limited to, rod elements, on such rod members. Thus, instead of round tubes, other profiles, for example U-profiles, can be used as rod elements. Instead of Stabele ^¬ elements 53 connecting heads of the invention may be 61 secured to other components. For example, a framework component 45 according to the invention can also be a console with one or more connection heads according to the invention.

In the exemplary embodiment, the round tube 78 is welded as usual with the respective connection head 61. However, it is understood that an inventive connection head can also be fastened in other ways to a component of the erfindungsge ^¬ MAESSEN scaffolding part. It is also understood that an inventive scaffolding part with we ^¬ a connection head according to the invention can also be produced nigstens eintei ^¬ lig.

Each connection head 61 has a contact part 63 and a connection part 64. The connection part 64 is fixed, preferably by welding, connected to the round tube 78. The plant part 63 has plant support surfaces 65.1, 65.2 having plant wall parts 63.1, 63.2 for abutment with the corresponding outer surfaces 54 of the stem 41. These plant support surfaces 65.1, 65.2 are, in a horizontal section parallel to the middle plane 68 of the slot 67th rounded concave with a radius 69 corresponding to the outer radius 70 of the round tube 46 of the stem 41.

Each connection head 61 is delimited by side wall parts 71.1 to 71.4, which in the direction of the front 79 have a wedge-like manner on a center or on a central axis 91 tapered Verti ^¬ kalaußenflächen 72.1 to 72.4. The vertical outer surfaces 72.1 to 72.4 include a wedge angle 73, preferably about 44 degrees or 45 degrees.

The abutment part 63 comprises an upper head part 74 and a lower head part 75. The upper head part 74 has an upper abutment support surface 65.1 of the abutment support surfaces 65.1, 65.2 for abutment with a corresponding upper outer surface 76.1 of one above the projection 44 extending stem portion 77.1 of the stem 41. The lower head part 75 has a lower abutment support surface 65.2 of the abutment support surfaces 65.1, 65.2 for abutment with a corresponding lower outer surface 76.2 of a stalk part 77.2 of the stem extending below the protrusion 44

41 on.

The upper head part 74 has an upper wedge opening 80 and the lower head part 75 has a lower wedge opening 81, for the wedge 62 which can be inserted through the wedge openings 80, 81.

Between the upper head portion 74 and the lower head portion 75 is a to the contact support surfaces 65.1, 65.2, so forward 79, and also to the vertical outer surfaces 72.1 to 72.4, ie on both sides, open, horizontal

Slot 67 is arranged, with which the connection head 61 can be plugged onto the perforated disc 44 or plugged. Of the Slot 67 extends in the rearward direction, preferably to the connection part 64.

Between the upper wedge opening 80 and the lower wedge opening 81, a wedge receiving space 84, also referred to as passage 84, for the wedge 62 is formed, which extends through the upper head part 80 and through the lower head part 81, crossing the slot 67. The Keilauf ^¬ receiving space 84 and the passage 84 is 79 forward by the plant-wall part 63.1 of the upper head portion 74 and the

Abutment wall portion 63.2 of the lower head portion 75, to the sides by the side wall portions 71.1 to 71.4 of the upper and lower head portions 74, 75, and to the rear by the connection portion 64, as well as in the upper head portion 74 by a wedge support Body 85 and by a wedge-pivoting

Abutment 86 limits, which will be discussed in more detail below. The passage 84 or the wedge receiving space 84 is in through-connection with an opening 82 in the connection part 64. This in turn is in through-connection with the interior 87 of the round tube 78.

The opening has a, preferably about 22.5 mm amount, inner diameter 289. The connection head 61 has a maximum width 290 in the area of a transition from the installation part 63 to the connection part 64. This may preferably be about 48 to 49 mm.

When the connection head 61 is completely plugged with its slot 67 on the perforated disc 44 and when the wedge 62 is inserted through the passage 84 and through an opening 55.1 of the apertures 55.1, 55.2 of the perforated disc 41, so that the connection head 61 of the Gerüstriegels 45 with the Orifice plate 44 is positively locked in a locking position 88 of the wedge 62, the upper wedge opener tion 80 of the upper head portion 74 and the lower wedge opening 81 of the lower head portion 75 approximately with this opening 55.1. The wedge 62 can be moved or pulled up to above the upper boundary surface 48 of the Lochschei ^¬ be 44 for unlocking the locked with the perforated disk 44 connecting head 61 of the perforated disk 44 through the passage 84 and through the wedge opening 55.1 upwards so that then the connection head 61 of the projection 44 removable, that is separately handled separately.

The connection head 61 is designed symmetrically to an imaginary vertical plane of symmetry 90, which is formed perpendicular to the imaginary horizontal center plane 68 of the slot 67 from ^¬ . The vertical plane of symmetry 90 contains the imaginary vertical central axis 91, in which the vertical planes 92.1, 92.2, spanned by the vertical outer surfaces 72.1 to 72.4 of the side wall parts 71.1 to 71.4 of the connection head 61, intersect in front of the connection head 61. In the embodiment shown, the vertical symmetry is ^¬ trie plane 90 also contains the longitudinal axis 94 of the round tube 78 of the scaffolding member 45 and frame bolt 45. When the on ^¬ connection head is fitted onto the perforated disc 44 61 and locked there by means of the wedge 62 and is braced, In the insertion region 93 of the slot 67, the connection head 61 is designed with its upper head part 74 and its lower head part 75 symmetrical to the median plane 68 of the slot 67 in the vertical plane of symmetry 90. Accordingly, the upper abutment support surface 65.1 of the upper head part 74 and the lower abutment support surface 65.2 of the lower head part 75 are symmetrical to the horizon formed valley center plane 68 of the slot 67 and further, the upper abutment support surface 65.1 of the upper head ^¬ part 74 and the lower abutment support surface 65.2 of unte ^¬ ren head part 75 are the same size.

The slot 67 has a front insertion portion in which it is upwardly limited by horizontal upper slot surfaces 95.1, 95.2 of the upper head portion 74 and downwardly to horizontal lower slot surfaces 96.1, 96.2 of the lower head portion 75 93, parallel to each other, before ^¬ preferably also parallel to the longitudinal axis 94 of the round tube 78, extend. There, the slot 67, viewed in the vertical direction 42, a first slot height 98 ers ^¬ te slot width, the vertical distance between the upper slot surfaces 95.1, 95.2 of the upper head part 74 and the lower slot surfaces 96.1, 96.2 of the lower head part 75th in the insertion area 93 corresponds. This distance 98 is preferably about 12 mm. The said slot surfaces 95.1, 95.2; 96.1, 96.2 extend on both sides of an imaginary, extending at the level of half the Schlitzhö ^¬ he 98 and the slot width horizontal With ^¬ tenebene 68 of the slot 67th

The slot 67 is rearwardly with vertically erstreckenden slot surfaces 102.1, 202.2 a slot bottom

103.1, 103.2 limited. In the area of the slot bottom 103.1,

103.2, or in a rear region of the slot 67, in which horizontal upper slot surfaces 99; 99.1, 99.2 of the slot 67 when the connection head 61 is completely plugged with its slot 67 on the perforated disc 44 and locked there by means of the through an opening 55.1 of the apertures 55.1, 55.2 of the perforated disc 44 inserted wedge 62, an outer edge web 97th the perforated disc 44 are opposite, the radially inward

79 is limited from said opening 55.1 of the perforated disc 44, the upper head portion 74 of the Anschlusskop ^¬ fes 61 a shoulder 100 on. The shoulder 100 extends in a direction perpendicular to the horizontal center plane 68 of the

Slit 67 formed in the longitudinal direction 101 of the upper wedge opening 80 extending, the upper wedge opening

80 passing, preferably in the transverse center of the An ^¬ closing head 61 extending, imaginary, vertical sectional plane 106 considered after below the Einführbe ^¬ rich 93 formed upper slot surfaces 95.1, 95.2 and limits the slot 67 with an upper paragraph slot surface 107 down.

Characterized in that the shoulder 100 in the field of having formed ^¬ th perpendicular to the horizontal center plane 68 of the slot 67, extending in the longitudinal direction 101 of the upper wedge aperture 80 extending through the upper wedge aperture 80, preferably ver ^¬ running in the transverse center of the connection head 61, imaginary, vertical plane 90, in particular the vertical symmetry plane 90 of the symmetrically designed connection head 61, is arranged, a particularly ^¬ advantageous combination with one or integration in one, the slot 67 to the front across, above the slot 67 arranged wedge support Body 85 realize. The wedge support body 85 has wedge support surfaces 108 for vertically supporting the lower wedge end 109 of the wedge 62 against inadvertently moving the wedge 62 vertically downwardly intersecting the slot 67 to engage the terminal head 61 with its slot 67 in FIG a substantially horizontal Aufstecke direction 107 radially on the projection 44 and on the perforated disc 44 without blocking by the wedge 62 to allow. The shoulder 100, the said vertical plane 90 enthal ^¬ tend, formed on both sides of the vertical plane 90 and he ^¬ extends between the upper side wall portions 71.1, 71.2 continuously. This makes it possible to reach a further advantage IMPROVE ^¬ tion in the sense of the foregoing, wherein a simple and easy slipping or sliding of the connection head 61 is possible with its slot 67 on the projection 44th The last-mentioned measure also makes it possible to achieve stiffening, in particular of the upper head part 74, of the connection head 61, so that the static characteristic values of the connection or of the connection node can be improved overall.

The heel 100 defines the slot 67 downwardly 115 toward the upper heel slot area 107. The upper heel slot area 107 is parallel to the upper slot areas 95.1, 95.2; 991., 99.2 and formed to the lower slot surfaces 96.1, 96.2 of the slot 67 and parallel to the Horizon ^¬ tal-center plane 107 of the slot 67. Between the upper shoulder slot surface 107 of the shoulder 100 and the lower slot surfaces 96.1, 96.2 of the slot 67, viewed in the vertical direction, the slot width 106 or height of the slot 67 is reduced due to the shoulder 44 to a vertical distance 106 which is smaller is as the distance 98 between the upper slot surfaces 95.1, 95.2 and the lower slot surfaces 96.1, 96.2 in the front insertion portion 93 of the slot 67, and thus is smaller than the slot width 98 or height of Schlit ^¬ zes 67 in this insertion 93rd The said distance 106 between the shoulder slot surface 107 and the lower slot surfaces 96.1, 96.2 in the exemplary embodiment is approximately 10.5 mm. About this paragraph 100 is based on the Connection head 61 when it is completely plugged with its slot 67 on the perforated disc 44 and locked there by means of the wedge 62, flat on the upper Begren ^¬ tion surface 48 of the outer edge web 97 of the perforated disc 44 in a support position 281 vertically from.

Due to the said paragraph 100, the slot 67, viewed in the direction from front to back 52, designed in the direction of the slot bottom 103.1, 103.2 with a taper 111. The taper 111 or the shoulder 100 is formed with an upper wall portion 112 of the upper head portion 74. This upper wall part 112 extends horizontally and continuously between the side wall parts 71.1, 71.2 of the upper head part 74, preferably as shown in the figures. The said upper wall part 112 or the shoulder 100 is delimited towards the front 79, ie towards the insertion region 93 of the slot 67, with an inclined surface 113 of a front insertion bevel 282, which is inclined downwards and backwards. The inclined surface 113 extends in a vertical symmetry plane 90 containing vertical considered ^¬ cut from the upper slot surfaces 95.1, 95.2 of the insertion portion 93 to bottom 115 and the rear or the outside 52 to the slot base 103.1, 103.2 back. The inclined surface 113 includes ^¬ amount forming a, preferably about 20 degrees with the horizontal 274 and the heel slot surface 107, an angle of inclination 283.

The abutment wall portion 63.1 of the upper head portion 74 of the on ^¬ closing head 61 is designed starting from its front abutment support surfaces 65.1 to the slot 67 out, with an inclined rearwardly or outwardly 52 and 115 down upper insertion bevel 116. The abutment wall portion 63.2 of the lower head portion 75 of the connection head 61 is starting from its front bearing support surfaces 65.2 to the slot 67, designed with a rearward or outward 52 and top 110 inclined lower insertion bevel 117. These two insertion bevels 116, 117 facilitate the attachment of the connection head 61 with its slot 67 on the perforated disc 44.

The upper insertion bevel 116 merges rearwardly 52 into the horizontal upper slot surfaces 95.1, 95.2 in the insertion region 93 of the slot 67. The lower insertion bevel 117 merges rearwardly 52 into the horizontal lower slot surfaces 96.1, 96.2 in the insertion region 93 of the slot 67. Due to the relatively high in the insertion 93 slit height 98 and width of the slot 67 of the connection head 61 with its slot 67 can accordingly be easily inserted or pushed onto the perforated disc 44 ^¬ . Because of the oblique surface 113 of the shoulder 100 inclined towards the rear 52 and 115 at the bottom, the connection head 61, when already radially attached to the perforated disc 44 with the insertion region 93, can be moved further forward 79 radially from there to the perforated disc 44 put off.

As can be seen in particular from FIGS. 10 to 13, the heel-slit surface 107 of the heel 100 is opposite the

Vertical outer surfaces 72.1, 72.2 of the upper side wall portions 71.1, 71.2 in the direction 284 inward, ie in the interior 119 and in the interior 123 of the connection head 61 ver ^¬ sets arranged. In this case, the heel-slit surface of the shoulder 100 is opposite the upper slit surfaces 95.1,

95.2; 99.1, 99.2 of the upper side wall parts 71.1, 71.2 offset in the direction 284 inwardly. The shoulder 100 is also provided with lateral insertion bevels 285.1, 285.2, each of which is provided with an inclined surface 286.1, 286.2 which extends to the respective vertical outer surface 72.1, 72.2 of the upper side wall parts 71.1, 71.2 and downwards 115;

Direction 284 inwardly into the horizontal paragraph slot surface 107 of paragraph 67 passes.

By the above measures, individually or in any combination weight can be saved and it is easier plugging or pushing the connection head 61 in a direction 120 perpendicular to the transverse direction 118, ie laterally or tangentially to the projection 44 possible. This is particularly advantageous if it is not possible for a plugging or pushing the connection head 61 in the direction of radially forward 79 on the projection 44 and on the perforated disc 44, example ^¬, because there is no sufficient space available or because the scaffolding component 45 or the scaffold bar 45 already at its point away from the connection head 61

End 56.2, in particular by means of a second Anschlusskop ^¬ fes 61 and a second wedge 62, already at a pre ^¬ jump 44 and cables connected to a perforated disk 44 of another vertical scaffold member 41 by means of the monitoring by a break through 55.1 of the perforated disc 44 the second wedge 62 is fastened such that the framework component 45 or the framework bar 45 can be pivoted in a horizontal plane 121 relative to the projection 44 or to the perforated disc 44. Such a mounting situation is indicated in FIG. 1, which will be discussed in greater detail below. The thus designed connection head 61 is particularly simple and inexpensive to produce. As can be seen in particular from FIGS. 10 and 13, the shoulder 100 extends continuously between the upper side wall parts 71.1, 71.2 in the inner space 123 defined by these or by their inner boundary surfaces 122.1, 122.2. Thereby a simple and facilitated ^¬ tes slipping or sliding of the connection head 61 is possible with its slot 67 on the projection 44 and it can be a stiffening, in particular of the upper head portion 74 of the connection head 61 to reach, so that the static tables characteristics improve the overall connection.

The upper heel-slit surface 107 of the shoulder 100 erstre ^¬ ckt, viewed in a vertical section parallel to the Verti ^¬ cal-plane of symmetry 90, in a vertical ers ^¬ th Schiit zflächen distance 125 below the provided in the in ^¬ guide area 93 upper slit surfaces 95.1, 95.2 of the slot 67. Then, when the connection head 61 is supported over the heel-slot surface 107 of paragraph 100 on the flat surface on the upper boundary surface 48 of the edge web 97 of the perforated disc 44, the lower slot surfaces 96.1, 96.2 of the slot 67 extend in one According to the first Schiit zflächen distance 125 is equal to the second Schiit zflächen distance 126. Before ^¬ preferably the first Schiit zflächen distance 125th and the second Schiit zflächen distance 126 each about 1.5 mm be ^¬ wear. By this measure remains when plugging the connection head 61 with its slot 67 on the Lochschei ^¬ be 44 a little game, which facilitates the plugging erleich ^¬ tert. By said measure or by the specific training of paragraph 100 but also ensures that when the connection head 61 is completely plugged with its slot 67 on the perforated disc 44, so that the connection head 61 is supported on the top 57 of the perforated disc 44 on the edge web 97 of the perforated disc 44 via the shoulder 100, a mediation of the connection ^¬ head 61 is achieved both relative to the horizontal center plane 68 of the slot 67 and relative to the horizontal Mit ^¬ tenebene 51 of the perforated disc 44. In other words, it can be inventively provided that not only the first distance 151.1 of the upper end 152 of the upper At ^¬ position support surface 65.1 of the upper head portion 74 of the Hori ^¬ zontal center plane 68 of the slot 67 and the second Ab ^¬ was 153.1 of the bottom end 154 of the lower abutment support surface 65.2 of the lower head portion 75 of the horizontal center plane 68 of the slot 67 are the same size, but that the first distance 151.2 of the upper end 152 of the upper abutment support surface 65.1 of the upper head portion 74 of the horizontal center plane 51 of the perforated disc 44 and the second distance 153.2 of the lower end 154 of the lower abutment support surface 65.2 of the lower head part 75 from the horizontal center plane 51 of the perforated disc 44 are equal. Characterized same lever arm ratios can at posi tive ^¬ bending stresses upwards as well as in the negative bending stresses down and accordingly improved static characteristics of the compound or of the circuit-knot are at ^¬ achieved.

Both the first distance 151.1 of the upper end 152 of the upper abutment support surface 65.1 of the upper head part 74 from the horizontal center plane 68 of the slot 67 and the second distance 153.1 of the lower end 154 of the lower abutment support surface 65.2 of the lower head part 75th from the horizontal center plane 68 of the slot 67 is in the shown embodiment about 36 mm. Both the first distance 151.2 of the upper end 152 of the upper abutment support surface 65.1 of the upper head part 74 from the horizon ^¬ tal center plane 51 of the perforated disc 44 and the second distance 153.2 of the lower end 154 of the lower investment

Support surface 65.2 of the lower head part 75 of the horizon ^¬ tal-center plane 68 of the perforated disc 44 is in the illustrated embodiment about 36 mm.

The shoulder portion 112 of the upper head portion 74 containing the shoulder 100 extends horizontally and transversely between the upper side wall portions 71.1, 71.2 in the interior 123 of the connection head 61. Said wall portion 112 also extends forwards into the wedge receiving space 123 while limiting it to the rear. Said wall portion 112 has a front boundary edge 128 which, viewed in a vertical plane or the vertical plane of symmetry 90 enthal ^¬ border vertical section is rounded convex. This front boundary edge 128 forms a release ^channel 128 for releasing the wedge, which will be discussed in greater detail below.

The said wall portion 112 and the paragraph 100 containing body also forms an inner wedge support body 85 for vertically supporting the lower wedge end 109 of the

Wedge 62 in an assembly position 263, in which a plugging of the connection head 61 is made possible with its slot 67 on the perforated disc 44 without a blockade by the wedge 62. The wedge support body 85 is disposed above the slot 67, the slot 67 to the front 79 across. The wedge support body 85 has wedge Stützflä ^¬ chen 108 on which the wedge 62 are supported with its lower wedge end 109 in said mounting position 263 can. The wedge support surfaces 108 are adjacent to a front boundary edge 128 of the heel 100 and the said wall portion 112 to the rear 52 and top 110 extending at. At least the disposed adjacent to said boundary edge 128 in the region or wedge-support-FLAE ^¬ surfaces 108 of the wedge-support-body 85 are arranged at a small vertical distance 129 above the heel slot surface 107th This distance 129 is smaller than half of the slot height 98 or width in the insertion portion 93 of the slot 67. The wedge support surfaces 108 are inclined towards the front boundary edge 128 of said wall ^¬ part 112 obliquely forward 79 and 115 below and are , viewed in a vertical section containing the vertical plane of symmetry 90, concave. In the ge ^¬ shown embodiment, the wedge-support surfaces 108 are viewed in said vertical section, with a, preferably end approximately 7 mm magnitude before ^¬, inner radius 130 decor with dark ^¬ tet. This inner radius 130 is slightly larger than, preferably about 6.25 mm, outer radius 131 of the wedge-end part 201 which can be supported on the wedge support surfaces 108 at the lower wedge end 109 of the wedge.

The said wedge-support surfaces 108 define a receiving pocket 132 for receiving and supporting the wedge-end portion 201 at the lower wedge end 109 of the wedge 62, which, as already mentioned above, convexly rounded with said outer Ra ^¬ dius 131 is. ^{Viewed in} the vertical ^{symmetry ¬} level 90 containing vertical section, the receiving pocket 132 has an inner contour 133 which extends in a circle over a circumferential angle 134, preferably of about 160 degrees. The inner contour 133 of the receptacle ^¬ pocket 132 corresponds to a likewise circular outer contour 135 of the wedge 62 at its lower end of the wedge 109. In which the vertical plane of symmetry 90 contains Ver ^¬ tikalschnitt considered, the receiving pocket 132 down 115 and front 79 of the lower front boundary edge 128 of the wedge support body 85 and the paragraph 100 is limited. The receiving pocket 132 is bounded at the top 110 and front 79 by an upper front boundary edge 124 of a wedge-pivot abutment 86, which preferably at the same time forms a wedge-loser-securing body which limits the wedge receiving space 84 to the rear 52. The wedge pivot abutment 86 is thus above the vertical support of the wedge 62 at its lower wedge end 109 enabling wedge support surfaces 108 of the wedge support body 85 is arranged.

When the wedge 62 is supported at its lower wedge end 109 on the wedge support surfaces 108 of the wedge support body 85, it protrudes with a wedge member 190 from the upper head portion 74 of the connection head 61 and then also with an upper wedge end 181 via the connection head 61 or over the front, vertical abutment support surfaces 65.1, 65.2 forward or outward, as shown for example in Figure 7. As can also be seen there, the wedge 62 is in the mounting position 263, in which it is supported at its lower wedge end 109 on the wedge support surfaces 108 of the wedge support body 85 with its own weight or heavy ^¬ kraftbedingt, in the imaginary longitudinal -Mitten- plane of the wedge openings or in the imaginary vertical plane of symmetry 90 of the connection head 61 relative to the An ^¬ closing head 61 pivotally, to a forward inclined stop pivot position 261. In this stop pivot position 261, the wedge is supported 62 with its front and second wedge-front edge 163 at one of the upper wedge opening 80 to the front 79 and radially to inside limiting wall portion 216 of the upper abutment wall portion 66.1 and the upper horizontal wall portion 213 of the upper head portion 74 from.

On the wedge pivot abutment 86, when the wedge 62 is vertically supported on the wedge support surfaces 108 of the wedge support body 85, it can be applied in the region of its lower wedge end 109. Then, when the wedge 62 on the wedge support surfaces 108 of the wedge support body 85 is vertically abutted against the wedge pivot abutment 86, the wedge 62 is about the wedge pivot abutment 86 with its upward 110 over the upper wedge opening 80 outwardly projecting wedge member 136 to the rear 52 and at the same time with its lower wedge end 109 forward 79 pivotally, to a release position in which the lower wedge end 109 due to gravity or due to the weight of the wedge 62 forward 79 on the lower , Front, also referred to as release edge edge 128 of the wedge support body 85 and the paragraph 100 of time, vertically down 115 slips so that the lower wedge end 109 in or through the slot 67 and at the intersection of the slot 67, to into or through the lower wedge opening 81 passes.

The front boundary edge 124 of the wedge-pivot abutment 86 extends horizontally between the upper

Side wall parts 71.2, 71.2 of the upper head part 74 on either side of the vertical plane of symmetry 90, preferably durchge ^¬ rising. The front boundary edge 124 of the wedge pivot abutment 86 bounds the upper wedge opening 80 to the rear 52. The wedge-pivot abutment 86, in which the

Vertical vertical section containing vertical ^{symmetry ¬} seeks, starting from its front boundary edge 124, vertically down 115 of a receiving pocket Limiting 132 limiting inner wall portion 139 of the upper head portion 74 and, starting from its boundary edge 124 upwards 110, bounded by a horizontally extending from the upper head portion 74 to the upper abutment wall portion 63.1 upper wall portion 140. The upper wall part 140 has a surface 138 which runs approximately parallel to the middle plane 68 of the slot 67 or approximately parallel to the longitudinal axis 94 of the round tube 78 of the framework component 45 or of the framework bar 45. This is, in which the vertical plane of symmetry 90 containing vertical sectional be ^¬ seeks, arranged at a short distance 137 below the outer surface 155 of the ear round 78th Said surface 138 of the top wall portion 140 and the top of the wedge pivot abutment 86, respectively, have a vertical distance 156 from the heel-slot area 107 of the heel 100. This is about 18.8 mm in the embodiment shown. The front boundary edge 124 of the wedge-pivot abutment 86 has a horizontal distance 142 from the abutment annular surface 141 of the connection part 64. This is about 20 mm in the embodiment shown.

As shown particularly in Figures 4, 6 and 13, the receiving pocket 132, the vertical ^¬ symmetry plane 90 containing cross-center on both sides of the vertical plane of symmetry 90, so the side, with two cen- rier Support Type z tabs 143.1, 143.2 limited in the range of your , The centering support tabs 143.1, 143.2 have opposite centering support surfaces 144.1, 144.2 for the wedge 62. The wedge 62 is supported laterally between the centering support surfaces 144.1, 144.2 at its lower wedge end 109 when the wedge 62 at its lower wedge end 109 rests on the wedge support surfaces 144.1, 144.2 of the wedge support member. Body 85 is supported. This allows a lateral Lich tilting of the upper wedge opening 80 passing through wedge 62 relative to the vertical plane of symmetry 90 mini ^¬ mized, whereby the wedge 62 during movement of the connection head 61 with its slot 67 in one or the substantially horizontal AufSteckrichtung 105 forward 79, radially on the projection 44 or on the hole ^¬ disc 44 and also during the Aufsteckens An ^¬ closing head 61 with its slot 67 forward 79 radially on the projection 44 and on the perforated disc 44, a more precise or safer actuation and Releasing the wedge

62 is reachable. The centering support z-surfaces 144.1, 144.2 of the centering Z-tabs 143.1, 143.2 extend in a horizontal distance 157 to each other. The distance 157 is about 10 mm in the embodiment. This distance 157 is slightly larger than the thickness 145 of the wedge 62.

The thickness 145 of the wedge 62 is about 6 mm in the exemplary embodiment. The centering Z-tabs 143.1, 143.2 are in an upper portion 146 of the receiving pocket 132, that is arranged in the region or in the vicinity of the wedge-pivot abutment 86. The centering support alarm z-tabs 143.1, 143.2 erstre ^¬ CKEN forward 79 and below 115 in the wedge-On ^¬ receiving space 84. Both measures have proven to be particularly advantageous if the wedge 62 at its lower end of the wedge 109 to Wedge support surfaces 108 of the receiving pocket 132 and the wedge support body 85 from ^¬ supports, in order then to achieve a secure guidance of the wedge 62 in Be ^¬ rich his lower wedge end 109 until its release. In the Aufnähmetasche 132 opens, preferably largely or substantially above the wedge support surfaces 108, a zinc outlet opening 147. This extends from the receiving pocket 132 obliquely to the rear 52 and bottom 115 in an inclination angle 136 to the vertical axis 148 into a cavity 149 of the connection head 61, which is in ^¬ through-connection to the opening 82 in the connection part 64 of the connection head 61st In the embodiment shown, the angle of inclination 136 is about 75

Degree. The zinc outlet opening 147 has an inner diameter 150. This is in the illustrated Ausführungsbei ^¬ game about 6 mm. The zinc outlet opening 147 opens in a central region between the centering Z-zontent surfaces 144.1, 144.2 of the centering Z-tabs z tabs 143.1, 143.2 and the wedge support surfaces 108 in the receiving pocket 132nd By the above measures For example, in the case of galvanizing the connection head 61, the zinc can flow well out of the receiving pocket 132, so that no troublesome zinc accumulation can occur in this region. It is understood, however, that instead of a central zinc outlet opening 147, at least two, in particular each side of the vertical plane of symmetry 90 arranged, can be provided in the Aufnah ^¬ me pocket 132 zinc outlet openings. These can be provided, for example, vertically below the centering stud z tabs 143 or in horizontally spaced edge regions of the upper side wall parts 71.1, 71.2. Next, the wedge 62 according to the invention is closer ^¬ be written, the separately in the figure 16, is shown in a mounting position:

The wedge 62 is made of flat material, in particular steel. It has a substantially constant wedge thickness

145 on. This is about 6 mm in the embodiment. The wedge 62 has facing away from each other, parallel wedge side surfaces 161.1, 161.2. The wedge 62 is to the rear 52 limited with a rear, first wedge front edge 162 and forward 79 with a front, second wedge front edge 163. The rear or first wedge front edge 162 is delimited by a rear, substantially flat contact surface 168, which extends obliquely downwards 115 and front 79 at an inclination angle 170 to the vertical axis 148. The inclination angle 170 in the illustrated embodiment is about eight degrees, in particular 7.7 degrees. The front and second wedge front edge 163 has a substantially flat contact surface 166. The

Contact surface 166 of the front and second wedge front edge 163 faces forward 79 of the rear 52 facing rear contact surface 168 of the rear or first wedge front edge 162 away.

The vertical front contact surface 166 transitions upwardly 110 with a radius of curvature 184, preferably of about 5 mm, into an upper impact surface 183 at the upper wedge end 181 and impact end of the wedge 62, respectively. The upper wedge end 181 or impact end is formed with a horizontal, upper wedge edge 182 running perpendicular to the vertical axis 148. This is limited to the upper wedge wedge surface 183 for driving the wedge 62 with a hammer. The turning wedge surface 183 is in the loading reaching its rear upper end 185, for example likewise draw end approximately 5 mm, Ra ^¬ dius 186, rounded, into the rear oblique contact surface 168 of the first wedge-end edge 162, in particular with a via. The upper bounded by the oblique contact surface 168, the upper wedge wedge surface 183 and the vertical contact surface 166

Wedge portion 190 extends when the connection head 61 is plugged with its slot 67 on the projection or on the perforated disc 44 and in one or the locking Position 88 is locked and clamped, over the upper head portion 74 of the connection head 61 vertically upward 110 addition (see Figure 4). The upper wedge part 190 has a maximum wedge part width 191 in the region of the upper wedge end 181. This is approximately in the embodiment

27.5 mm. It is chosen so large that the wedge 62 is handled separately when the connection head 61 or the connection head 61 having scaffold component 45 and when the wedge 62 is inserted not only through the upper wedge opening 80 but also through the lower wedge opening 81, certainly can not fall down through the lower Keilöff ^¬ tion 81. The wedge 62 has a length of about 140 mm.

The vertical, rear contact surface 168 merges at a distance 192, preferably approximately 33 mm, from the lower wedge end 109 into an inclined surface 193 which is inclined forwardly 79 and downwards 115, which inclines at an angle of inclination 195 which is preferably approximately 13 degrees verti ^¬ cal axis 148 is formed. The inclined surface 193 merges at a distance 196, preferably approximately 20 mm, from the lower wedge end 109 into a vertical surface 197 of the rear or first wedge front edge 162 running parallel to the vertical axis 148. There, the wedge 62 between the parallel there running vertical surfaces 197, 205, the rear and the front wedge front edge 162bzw. 163 has a lower wedge width 198. This is in the exemplary embodiment about 11 mm. The said vertical surface 197 extends parallel to the vertical axis 148 over a length 199. This is in the exemplary embodiment about 10 mm. The vertical surface 197 goes down 115 in a, the lower wedge end 109 delimiting wedge-end surface 200 of a wedge-end portion 201 over. In this is a bore 202 for receiving a Verliersi ^¬ insurance, here a rivet 203, attached. The wedge-end FLAE ^¬ surface 200 of the lower wedge end portion 201 is rounded with a radius 204 that is greater than half the width of lower wedge 198, in which the wedge 62 from the rear

Vertical surface 197 of the rear or first wedge front edge 162 and the front, parallel thereto vertical surface 205 of the front and second wedge front edge 163 is limited. In a lower region, in which the wedge-end surface 200, the rear or first wedge-front edge

162 limited to the rear 52, the wedge-end face 200 rises slightly rearward 52 over the said rear vertical surface 197, so that there is an elevation 206 is formed. The elevation 206, bounded by the rounded wedge-end face 200, extends vertically upwardly therefrom

110 adjoining vertical surface 197 and the obliquely rearward 52 and top 110 subsequent Schrägflä ^¬ che 193 define a bridging recess 207. This is provided to ensure that the wedge 62 when inserted through the upper wedge opening 80 is captively secured by means of the captive 203 with the connection head 61, after an upward pull or in an upwardly pulled state in which the captive 203 prevents further pulling out of the wedge 62 upwards, in the course of a back ^¬ 52 and 115 down to pivoting of the wedge 62 with its rear or first wedge front edge 162 in the region of the upper wedge end 181 on the outer surface 155 of a fixedly connected to the connection part 64 of the connection head 61 bar member, preferably a round tube 78th , can be easily transferred. In this way, optimally space-saving accommodation of the wedge 62 is to be transposed. porting possible and the risk of entanglement with other scaffolding components is minimized.

The rounded wedge end surface 200 of the lower wedge end portion 201 goes into one, the front, second wedge end edge

163 associated portion, upward 110 tangentially into the front contact surface 166 of the front and second wedge-front edge 163 via. The wedge 62 is captive with the connection head 61 ver ^¬ connected. For this purpose, the wedge 62 in the region of its lower wedge end 109, here on the wedge-end part 201, a Verlier ^¬ assurance 203 in the form of a thickening of material. As a captive a rivet 203 is provided in the embodiment. This points laterally over the flat wedge

Side surfaces 161.1, 161.2 of the wedge 62 projecting Niet ^¬ heads 209.1, 209.2. As a rivet 203 may be used, for example, a Flachrundniet or blind rivet. Be ^¬ preferably the Flachrundniet can be riveted by machine, while the blind rivet can be preferably riveted by hand. The rivet heads 209.1, 209.2 span a maximum rivet head diameter 210 that is greater than the inside diameter of the receiving bore 202 provided at the lower wedge end 109 of the wedge 62. Preferably, the maximum rivet head diameter 210 is less than twice

Rounding radius 204 with which the lower wedge end portion 201 is rounded (see, for example, Figures 4 and 7).

The rivet 203 projects with its rivet heads 209.1, 209.2 lateral borrowed in a Nietbreite 211 via the two wedge-side surfaces 161.1, 161.2 of the wedge 62 out, which is greater than the slot width 114 of the upper wedge aperture 80. Since ^¬ by, the wedge 62 not above 110 from the Schludkopf 61 are pulled out, but the wedge 62 can only up to a stop at least one of its rivet heads 209.1, 209.2 on the inner boundary surfaces 212 of the upper wedge opening 80 bounding wall parts, in particular ^¬ special of the upper horizontal wall portion 213, the upper head portion 74 of the connection head 61 pulled up ^¬ the.

The lower wedge opening 81 of the lower head part 75 is larger than the upper wedge opening 80 of the upper head part 74, and so large that the lower wedge end 109 with the rivet 203 fastened there can be inserted easily down 115 through the lower wedge opening 81.

The designed as a longitudinal slot 215 upper wedge opening 80 extends on both sides of the vertical plane of symmetry 90 of the connection head 61. The longitudinal slot 215 has a slot width 114 which is only slightly larger than the thickness 145 of the wedge 62. The slot width 114 is in the embodiment about 7th , 2 mm.

The upper wedge opening 80 is limited towards the front 79 with a front wall portion 216 of the abutment wall portion 63.1 of the upper head portion 74. This front wall portion 216 is also part of the upper horizontal wall portion 213, which delimits the upper head portion 74 upwardly 110 with a horizontal outer surface 217, which is formed parallel to the center plane 68 of the slot 67. Inwardly 123 toward the wedge receiving space 84, the upper horizontal wall portion 213 is bounded by a horizontal inner surface 212 which extends obliquely to the horizontal outer surface 217 upwardly 110 and rearwardly 52. The horizontal wall portion 213 is in an obliquely down 115 and rear 52 up to the connection part 64 extending rear wall portion 220 via. This is limited by flat outer surfaces 221. The horizontal inner surface 212 of the upper horizontal wall portion 213 go on both sides of the upper wedge opening 80 to the rear 52 in wedge-guide surfaces 222.1, 222.2 of obliquely to the rear 52 and below 115 extending wedge-leading edge 223.1, 223.2 on. The respective wedge-leading edge 223.1, 223.2 is formed with wedge-guide surfaces 222.1, 222.2 extending approximately perpendicular to the vertical plane of symmetry 90. These limit the rear wall portion 220 forward 79 to the wedge receiving space 84 out. The wedge-guide edges 223.1, 223.2 or their wedge-guide surfaces 222.1, 222.2 go obliquely to the rear 52 and bottom 115 tangentially into the receiving pocket 132 and the inner ^¬ surfaces over. The wedge-leading edges 223.1, 223.2 or the wedge-guide surfaces 222.1, 222.2 allow an advantageous guidance of the wedge 62 at or over the material thickening, here the rivet heads 209.1, 209.2, which are provided in the region of the lower wedge end 109 of the wedge 62. This will be discussed in more detail below.

The upper abutment wall portion 63.1 of the upper head portion 74 having the front upper abutment support surface 65.1 is toward the rear 52 and below 115 toward the wedge receiving space 84 with an inner, substantially planar, vertical, upper

Wedge support surface 225 limited. The upper wedge support surface 225 extends approximately from the upper horizontal outer surface 217 of the upper horizontal wall portion 213 of the upper head portion 74 parallel to a vertical axis 148. The upper wedge support surface 225 extends verti ^¬ cal down 115 to about the upper slot surfaces 95.1, 95.2 in the insertion 93rd The vertical axis 148 is determined by a substantially ebe ^¬ ne, vertical wedge support surface 229, which, one, preferably each opening 55; 55.1, 55.2 of the openings 55; 55.1, 55.2 of the perforated disk 44 bounded radially to the outside 52 extending from the upper Begrenzungsflä ^¬ surface 48 up to the lower boundary surface 49 of the perforated disc ^¬ 44th This vertical axis 148, which also includes the longitudinal axis 47 of the stem extends parallel 41 corresponds in the erected state of the stem 41 and the latter and the connection head 61 with the wedge 62 include ^¬ assembly 230 for a frame 40 or a scaffold 40, ideal way of plumbing. It will be appreciated that the vertical axis 148 as part of the in practice erge ^¬ reproduced Setting up or suspension deviations relative to the vertical at a certain angle of inclination may be inclined.

The lower abutment wall portion 63.2 of the lower head portion 75 is bounded toward the rear 52 and 115 at the bottom to the wedge receiving space 84 with an inner, substantially flat, vertical, lower wedge support surface 231. The lower wedge support surface 231 extends approximately downwards from the front end 232 of the lower insertion region 93.2 of the lower head part 75 in the region of the lower insertion bevel 117 parallel to the vertical axis 148. The lower wedge support element extends in this way. Surface 231 approximately to a lower horizontal surface 218 of the lower horizontal wall portion 214 of the lower head portion 75, which limits the lower head portion 75 down 115.

The upper horizontal wall portion 213 is bounded above 110 with an upper horizontal surface 217 and the lower horizontal wall portion 214 is down 115 with a lower horizontal surface 218 bounded, which extend parallel to each other and parallel to the center plane 68 of the slot 67. The upper horizontal wall portion 213 and the ^¬ sen upper horizontal surface 217 and also the lower horizontal wall portion 214 and whose lower horizontal surface

218 have a different length 213, 234 when viewed in a vertical section containing the vertical ^plane or the vertical symmetry ^plane 90. The length 233 of the upper horizontal wall portion 213 or its upper horizontal surface 217 is smaller than the length 234 of the lower

Horizontal wall portion 214 and its lower Horizontalflä ^¬ surface 218. The vertical upper wedge support surface 225 and the vertical lower wedge support surface 231 parallel to each other.

The terminal portion 64 of the connection head 61 is bounded towards ^¬ th 52 with a fully continuous abutting annular surface 141 which is perpendicular to to the vertical symmetry is ^¬ trie plane 90 and perpendicular to the center plane 68 of the Schli- tzes or perpendicular the longitudinal axis 94 of the rod element

78 and the round tube 78 is formed. The abutment annular surface 141 is perpendicularly intersected with respect to a line of intersection in which the vertical plane of symmetry 90 and the median plane 68 of the slot 67 cross perpendicularly with respect to the longitudinal axis 94 of the rod member 78 by an outer diameter 247, which is slightly smaller than the outer diameter 235 of the rod member 78 in the terminal region. This results in advantageous automatic welding conditions.

The abutting ring surface 141 is, with reference to the sectional ^¬ line, in which the vertical plane of symmetry 90 and the center plane of the slot 68 intersect perpendicularly or with respect to the longitudinal axis 94 of the rod member 78, bounded in the radial direction inwardly by an inner diameter 248. This is slightly smaller than the inner ^¬ diameter 249 of the rod member 78 in the connection area.

In the rearward direction 52 through the abutting annular surface 141 addition, three centering tabs 250.1, 250.2, 250.3, which are a ^¬ plugged in the rod member or into the round tube 78 and are inserted there extend. The Zentrierlap ^¬ pen 250.1, 250.2, 250.3 are not arranged offset in the illustrated embodiment ^¬ example in the same circumferential angles to each other. However, it is understood that such or similar centering tabs can be arranged in the same circumferential angles to each other. In the illustrated embodiment, the two centering tabs are arranged 250.1 and 250.3 in a circumferential angle of about 180 degrees offset 251.1 zuein ^¬ other. In contrast to this, the further centering tab 250.2 arranged in the circumferential direction between these two centering tabs 250.1 and 250.3 is offset relative to the adjacent centering tabs 250.1, 250.3 in each case at the same circumferential angle 251.2 of only approximately 90 degrees (FIG. 10). In this case, the said further centering tab 250.2 is assigned to the lower head part 75 of the connection head 61.

The abutment-ring surface 141 of the front abutment support surfaces 65.1, 65.2 of the upper and lower abutment wall portion 63.1, 63.2 of the connection head 61, in a vertical plane or the vertical plane of symmetry 90 enthal ^¬ border longitudinal section considered , a distance 252, which is equal to the corresponding distance of 252 to ^¬ take precedence connection heads of the scaffolding system LAYHER allround or corresponding scaffolding systems. This distance 252 is about 50 mm. The connection head 61 according to the invention is therefore also to the extent optimized designed in compliance with predetermined by the Baukas ^¬ tensystem design boundary conditions. But not only all measures ^{according to the} invention relating to the connection head 61, but also all the measures according to the invention relating to the wedge 62 are inventively optimized in such a way that integration or combinability with the existing framework parts is readily possible.

Subsequently, an inventive arrangement 230 be ^{¬ written} , in which the connection head 61 of the scaffolding ^¬ part 45 is inserted horizontally with its slot 67 on the disc ^¬ disk 44 and in which the wedge 62 through the upper wedge opening 80, through an opening 55.1 of Openings 55.1, 55.2 of the perforated disc 44 and through the lower wedge opening 81 is inserted, so that the wedge 62 is in a locking position 88, in which the connection head 61 with the perforated disc 44 against Ent ^¬ distant the connection head 61 of the perforated disc 44 in all conceivable directions is positively locked and in which the connection head 61 is removable only after unlocking the wedge 62 by a force acting on the wedge 62 force of the perforated disc 44. Such an ^arrangement 230 or assembly and fastening situation is illustrated in particular in FIGS. 3, 4 and 5.

In the locking position 88, the wedge 62 with the vertical, essentially flat contact surface 168 of its rear or first wedge front edge 162 is only locally, in the region of an upper recess edge 280 of the opening 55. 1 of the perforated disk 44, point or line. Shaped, at the corresponding, the opening 55.1 of the perforated disc 44 to the rear or outside 52 bounding, substantially planar, extending parallel to the vertical axis 148, vertical wedge support surface 229 of the perforated disc 44 can be applied or applied. At the same time is the

Wedge 62 with the substantially flat, vertical, contact surface 166 of its front and second wedge-front edge 163, which extends parallel to the vertical axis 148 ^¬ both flat on the corresponding, substantially flat, pointing back 52 , inner, upper wedge support surface 225 of the upper head part 74 can be applied or applied, which also extends parallel to the verti ^¬ len axis 148, as well as flat on the corresponding, substantially planar, pointing back 52, the inner, lower wedge support surface 231 of the lower

Headpiece 75 can be applied, which also extends parallel to the vertical axis 148.

Certain parts of the invention may be described in further or different representation as follows: The upper

Head portion 74 has a substantially flat, in the transverse direction 118 inner side 83 of the passage 84 a substantially flat, outwardly 52 pointing in the transverse direction 118, parallel to the vertical axis 148 extending, upper wedge support surface 225 for the wedge 62. The lower head part 75 has, on a transverse side 118 inner side 83 of the passage 84, a substantially flat, in the transverse direction 118 outwardly 52 facing, parallel to the vertical axis 148 extending, lower wedge support surface 231 for the wedge 62 , The upper wedge support surface 225 and the lower wedge support surface 231 are parallel and without a lateral offset from each other or aligned with each other. The wedge 62 has a rearwardly facing outwardly 52 and a first wedge end edge 162 which is a substantially flat, obliquely outward 52 and down 115 at an inclination angle 170 to the vertical axis 148 along a Has oblique axis 169 extending contact surface 168. The contact surface 168 of the first wedge-front edge 162 is located when the wedge 62 is in the locking position 88 and the connection head 61 is clamped by means of the wedge 62 with the verti ^¬ cal scaffold element 41, or if the wedge 62 in the locking position 88 is located only locally in the region of the upper recess edge 280 of a Durchbre ^¬ chung 55; 55.1 of the projection or perforated disk 44 on the vertical wedge pointing inwards or forwards 79.

Support surface 229 of the outer projection portion 97 at.

The wedge 62 furthermore has a front edge or second wedge end edge 163 which points in the transverse direction 118 to the front or to the inside 79 and has a substantially planar vertical contact surface 166 extending parallel to the vertical axis 148 or rectilinearly. The Kon ^¬ clock face 166 corresponds both with the upper wedge supporting surface 225 of the upper head portion 74 and with the lower wedge supporting surface 231 of the lower crown part 75 of the ^¬ art that the vertical contact surface 166 of the wedge 62 and the two vertical wedge support surfaces 225, 231 of the connection head 61 parallel to each other and lying flat against each other, relative to each other, along or in the direction of the vertical axis 148, are displaceable.

Accordingly, the wedge 62 of the connection head 61 lies, when the connection head 61 is intended for a jump or on a perforated disc 44 of a vertical scaffolding element or scaffolding handle 41 is attached such that the wedge 62 formed by the formed in the upper head portion 74 and the lower head portion 75 passage 84 under Kreu ^¬ tion of the slot 67 through an opening 55; 55.1 of the projection or the perforated disc 44 is inserted therethrough and is accordingly in a locking position 88, with its front, pointing in the direction of the vertical framework element or scaffold post 41, straight, vertical leading edge or second wedge-front edge 163 or with their Contact surface 166 of the corresponding wedge supporting surfaces 225, 231 of the straight inner edges and the vertical wedge supporting surfaces 225, 231 of the upper head portion 74 and the lower head part 75 connecting head 61, currency ^¬ end of the wedge 62 at the same time the rear with its, by the vertical scaffold element or the scaffold post 41 have ^¬ the oblique trailing edge or first wedge-front edge 162 or its contact surface 168 point or line on the vertical or perpendicular to the vertical axis 148 extending inner edge or its wedge Support surface 229 of the aperture 55; 55.1. at the upper recess edge 280 of the projection or the perforated disc 44 is on ^¬ . The upper abutment part 63.1 of the upper head part 74 and the lower abutment wall part 63.2 of the lower head part 75 have, for example in the vertical cross section shown in FIGS. 4 and 6, a vertical or vertical direction 110, 115 parallel to the vertical axis 148 constant thickness 288. The thickness 288 is preferably about 8.0 mm. Further, viewed in the same vertical cross-section, the outwardly facing 52 wedge support surfaces 225, 231 extend both of the upper Installation wall portion 61.1 of the upper head portion 74 and the lower abutment wall portion 61.2 of the lower head portion 75 parallel to the abutment support surfaces 65.1 and 65.2.

It will be understood that the invention is not limited to those shown in the figures and embodiments described above, but that invention ^shown SSE arrangement or an inventive scaffolding part under the principles set out in particular in the claims and in the description of the inventive concept also be designed differently, can be dimensioned and / or designed. In particular, according to the invention, the technical features and measures that can be taken from the claims and the description can be combined as desired, individually or in a plurality, as desired.

E N G L I S H E S T E

Scaffolding / modular scaffold 54.2 lower outer surface vertical scaffold ^¬ of 41

Element / Handle / 55 Through Hole / Through Barrier Break / Breakthrough Axial Direction / Verti55.1 Small Breakthrough Direction / Thickness 55.2 Large Breakthrough Direction 56.1 End of 45

Pitch 56.2 end of 45

Connecting element / 57 Top of 44 Projection / rosette / 58 Bottom of 44 Perforated disk 59 Circumferential angle

Scaffolding component / attachment 60 Circumferential locking, holding, 61 connection head

Support element / longitudinal 62 wedge

latch / scaffold bar 63 Attachment part of 61 round tube 63.1 of upper attachment

Longitudinal axis of 41 wall part

upper limit ^¬ 63.2 lower contact surface of 44 wall part

lower limit ^¬ 64 connection part of 61 area of 44 65.1 upper plant support hole height thickness area

Center plane of 44 65.2 lower plant support rear / outside surface

Bar element 67 slot

Outer surface of 41 68 center plane / Horiobere outer surface zontal-center plane of 41 of 67

69 radius Outside radius of 46 82 Upper side opening 83 Inside side 84 Wall section 84 Wedge receiving space / upper side passage

Wall Section 85 Wedge Support Body Lower Side 86 Wedge Swivel Wall Section abutment

lower side 87 Interior of 78 Wall section 88 Locking top vertical position

Outer surface 89. upper inner edge of upper vertical 66.1

Outer surface 89. lower inner edge lower vertical of 66.2

External surface 90 Vertical symmetry ^¬ lower vertical plane / vertical plane outer surface 91 vertical central wedge angle axis

upper head part 92.1 Vertical plane of 61 92.2 Vertical plane lower head part 93 Insertion area of 61 93.1 upper infeed outer surface area

of 41 93.2 lower insertion lower surface area

of 41 94 Longitudinal axis of 78 Longitudinal part of 41 95.1 Upper slot surface Handle part of 41 95.2 Upper slot surface Component / rod element / 96.1 Lower slot surface Round tube 96.2 Lower slot surface forwards / inwards 97 (outer)

upper wedge opening projection part / lower wedge opening edge web 98 first slit height / 116 upper slant slot / 117 lower slant vertical distance 118 cross direction

99 upper slot surface 119 (the) interior of 61

99.1 upper slot surface 120 direction / tangential

99.2 top slot surface 121 horizontal plane

100 heel / support body 122.1

101 longitudinal direction of 80 area

102.1 vertical slot122.2 inner boundary surface area

102.2 vertical slot123 interior / interior surface 124 (upper) front Be ^¬

103 slot base border of 86

103.1 slot base 125 first vertical

103.2 Slot base Schiit zflächen-

104 longitudinal direction of 80 distance

105 126 substantially horizontal second vertical Shell ^¬ Schiit zflächen- direction / in WesentAbstand

horizontally 127 wedge-end part

106 slot width / 128 (lower / front /

Schiit height / distance inner limit ^¬

107 upper shoulder edge / release edge / slot bottom lower end of 85

108 wedge support surface of 129 vertical distance 85 130 inner radius

109 lower wedge end 131 outer radius

110 upwards 132 receiving bag

111 taper 133 inner contour of 132

112 (upper) wall part 134 circumferential angle

113 inclined surface of 100 135 outer contour

114 slot width of 80 136 inclination angle

115 down 137 distance 138 surface of 140 edge

139 inner wall part of 74 166 upper (front /

140 Upper wall portion inner) contact ^¬

141 kick-off ring area area of 163

142 horizontal distance 168 (rear / outer)

143.1 Centering support z-tab Contact surface of

143.2 Centering lug 162

144.1 Centering support surface 169 Slant axis

144.2 Centering support surface 170 Inclination angle

145 thickness of 62 / wedge 181 upper wedge end /

thick wrapping end

146 upper portion of 182 upper wedge edge

132 183 upper ^{wedge ¬}

147 zinc outlet opening area

148 vertical axis 184 radius

149 cavity 185 rear, upper end

150 inner diameter of 183

147 186 radius

151.1 first distance 190 upper wedge part

151.2 first distance 191 (maximum) wedge part

152 upper end of 65.1 width

153.1 second distance 192 distance

153.2 second distance 193 inclined surface

154 lower end of 65.2 195 inclination angle

155 outer surface of 78 196 distance

156 Vertical distance 197 Vertical surface

157 horizontal distance 198 lower wedge width

161.1 wedge side surface 199 length of 197

161.2 Wedge side surface 200 Wedge end surface

162 (rear / outer) 201 wedge-end part

first wedge leading edge 202 bore

163 (front / inner) 203 captive / second wedge-front thickening / rivet 204 radius support surface of 55

205 vertical surface 230 arrangement

206 increase 231 lower wedge support

207 bridging area

Recess 232 front / inner

209.1 Riveting head end of 93.2

209.2 Riveting Head 233 Length of 213

210 maximum rivet head ^¬ 234 length of 214

diameter 235 outer diameter

211 rivet width of 78

212 inner (delimiting) 236 radially (inner /

Surface / horizontal rear) side of 84 surface / support surface 241.1 upper framework element- of 213 part / stem part

213 upper horizontal 241.2 lower frame wall part / part

214 lower horizontal 247 outer diameter

Wall part of 141

215 longitudinal slot 248 inner diameter

216 wall part of 141

217 (upper) horizontal 249 inner diameter of

(Outside) area of 213 78

218 (lower) horizontal 250.1 centering lugs

(Outside) Area of 214 250.2 centering lugs

220 Rear wall section 250.3 Centering lugs

221 External surface of 220 251.1 Circumferential angle

222.1 Wedge guide surface 251.2 Circumferential angle

222.2 Wedge guide surface 252 Distance

223.1 Wedge leading edge 253 upper pivoting position

223.2 Wedge Guide Edge 260 (Inner) Edge Bridge / 225 Upper Wedge Support Lug Part

area 263 (initial)

229 (vertical) wedge mounting position 265 mechanic

266 secured location

267 leading

railing

268 railing / back-hip railing

269 scaffolding floor

270.1 framework field

270.2 adjacent framework ^¬ field

277 knee bar

280 recess edge

281 support position

282 (front) insertion ^¬ bevel

283 tilt angle

from 113

284 direction (inside)

285.1 (lateral) insertion ^¬ bevel

285.2 (lateral) insertion ^¬ bevel

286.1 inclined surface

from 285.1

286.2 inclined surface

from 285.2

287.1 Inclination angle

287.2 Inclination angle

288 Thickness of 63.1, 63.2

289 inner diameter

from 82

290 (maximum) width

from 61

Claims

P A T E N T A N S P R E C H E

Arrangement (230) of a connection head (61) aufwei ^¬ send scaffold component (45) and in the direction of a longitudinal axis (47) extending vertical scaffold element (41) on which a transversely, ie in a transverse direction (118), to the Longitudinal axis (47) of the framework ^¬ element (41) of this away, so outwardly (52), extending projection (44) is fixed, on which the connection head (61) is plugged to form a releasable connection, wherein the projection (44 ) has an upper boundary surface (48) and a lower boundary surface (49) which extend on both sides of a horizontal center plane (51) of the projection (44), and wherein the projection (44) at least one Durchbre ^¬ tion (55; 55.1, 55.2) for inserting a wedge (62) interposed between a transversely (118) inner projection portion (260) of the projection (44) and a transversely (118) outer projection portion (97) of the projection (44). is arranged and the itself between the upper and lower boundary surfaces (48, 49) extends vertically, and wherein the connection head (61) has an upper head part (74) with an upper wedge opening (80) and a lower head part (75) with a lower wedge opening (81) , for the wedge (62) which can be inserted through the wedge openings (80, 81), and wherein the connection head (61) has an abutment part (63; 63.1, 63.2) which supports vertically extending abutment support surfaces (65.1, 65.2 ) bearing system wall parts (66.1, 66.2) for abutment with corresponding, vertically extending outer surfaces (54;

54.1, 54.2) of the vertical framework element (41)

and wherein the upper head portion (74) has an upper abutment support surface (65.1) of the abutment support surfaces (65.1, 65.2) for engaging a corresponding upper outer surface (54.1) of a protrusion (44) extending above the protrusion (44) Scaffolding element part (241.1) of the vertical frame member (41), and wherein the lower head part (75) has a lower abutment support surface (65.2) of the abutment support surfaces (65.1, 65.2) for abutment with a corresponding lower outer surface (54.2) one below the

Projection (44) extending scaffolding element part

(241.2) of the vertical scaffolding element (41), and wherein between the upper head part (74) and the lower head part (75) to the plant support surfaces (65.1, 65.2) forward (79) open slot (67) is arranged, with the connection head (61) is fitted on the projection (44), and wherein the slot (67) in a front insertion region (93; 93.1, 93.2) is bounded above (110) with horizontal upper slit surfaces (95.1) of the upper head part (74) and downwards (115) with horizontal lower slit surfaces (95.2) of the lower head part (75) substantially parallel to each other on either side Horizontal center plane (68) of the slot (67) extend, and wherein the slot (67) in the transverse direction (118) to the rear (52) with vertically extending slot surfaces (102.1, 102.2) of a

Slotgrundes (103.1, 103.2) is limited, and wherein between the upper wedge opening (80) and the lower wedge opening (81) has a passage (84) for the wedge (62) formed by the upper head part (74) and through the lower head part (75) under

Crossing of the slot (67) and which is aligned with the opening (55.1) of the projection (44), and wherein the wedge (62) through the passage (84) and through the opening (55.1) of the projection (44) is inserted such that the connection head (61) of the

Scaffolding (45) with the help of himself in a

Locking position (88) located wedge (62) with the projection (44) is positively locked, wherein the wedge (62) for unlocking the connection head (61) from the projection (44) through the passage (84) upwards (110) at least beyond the upper limit surface (48) of the projection (44) is movable, so that then the connection head (61) from the projection (44) is removable, and either already when the wedge (62) is in the locking position (88) or when the wedge (62) is in the locking position (88) and the connection head (61) is clamped to the vertical framework (41) by means of the wedge (62), the upper head part (74) engages the upper one

Plant support surface (65.1) on the upper outer surface (54.1) of the framework element (41) and the lower head portion (75) with the lower abutment support surface (65.2) on the lower outer surface (54.2) of the framework element (41) support, and wherein the upper head part (74) with a by an upper slot surface (107) of the slot (67) limited support body (100) on the upper boundary surface (48) of the projection (44) in a support position (281) on ^¬ sits , and wherein in the support position (281), the upper

Plant support surface (65.1) vertically upwards (110) to an upper end (152) extending at a first distance (151.1) from the horizontal center plane (68) of the slot (67) and at a first distance (151.2) from the horizontal center plane (51) of

Projection (44) is arranged, and wherein in the support position (281), the lower abutment support surface (65.2) vertically downwards (115) to a lower end (154) extends in a second distance (153.1) from the horizontal center plane (68) of the slot (67) and at a second distance (153.2) from the horizontal center plane (51) of the

Projection (44) is arranged, and wherein the outer projection part (97) of the Vor ^¬ jump (44) has an inwardly (79) facing, vertical wedge support surface (229) for the wedge (62), which the opening (55.1) to the outside (52)

and which extends between the upper boundary surface (48) and the lower boundary surface (49) of the projection (44) parallel to or along or in the direction of a vertical axis (148), and wherein the upper head portion (74) is disposed on a

Transverse (118) inner side (83) of the passage (84) a transversely (118) outwardly facing, parallel to the vertical axis (148) extending, vertical, upper wedge support surface (225) for the wedge ( 62), and wherein the lower head part (75) on an inner transverse ^¬ direction (118) side (83) of the passage (84) a (in the transverse direction 118) facing outwards, (parallel to the vertical axis 148) extending, verti ^¬ kale, lower wedge support surface (231) for the wedge (62), and wherein the wedge (62) has a first wedge front edge (162) extending obliquely inwards (79 ) and below (115) at an inclination angle (170) to the vertical axis (148) along a

Oblique axis (169) extending outward (52) pointing contact surface (168), which is when the wedge (62) is in the locking position (88) and the connection head (61) by means of the wedge (62) with the vertical frame member (41) is braced and / or then when the wedge (62) in the

Locking position (88) is located only locally on the vertical wedge support surface (229) of the outer

The wedge (62) has a second wedge end edge (163) pointing inwards (79) in the transverse direction (118) and has a vertical contact surface (166) extending parallel to the vertical axis (148) ) corresponding to the vertical upper wedge support surface (225) of the upper head portion (74) and to the vertical lower wedge support surface (231) of the lower head portion (75) such that the vertical contact surface (166 ) of the wedge (62) abuts both the vertical upper wedge support surface (225) of the terminal head (61) and the vertical lower wedge support surface (231) of the terminal head (61), relative to both the vertical one upper wedge support surface (225) as well as to the vertical lower wedge support surface (231), parallel to or along or in the direction of the vertical axis (148) is displaceable, characterized in that the slot (67) in Direction (52) on his

Slot bottom (103.1, 103.2) or in the area of its slot bottom (103.1, 103.2) or in a rear one Area of the slot (67) with one after

below that in the insertion area (93; 93.1)

formed horizontal upper slot surfaces (95.1) of the slot (67) extending shoulder (100) of the upper head portion (74) which is bounded below (115) with a horizontal upper paragraph slot surface (107) of the slot (67) and wherein in the support layer (281) above the horizontal upper boundary surface (48) of the outer projection portion (97) of the projection (44) arranged shoulder (100) in the support position (281) and at least when the wedge (62) is in the locking position (88) and the connection head (61) by means of the wedge (62) with the vertical

Scaffold (41) is clamped or already when the wedge (62) is in the locking position (88), with its parallel to the

horizontal upper boundary surface (49) of the

Projection (44) extending paragraph slot surface - (107) on the upper boundary surface (48) of

Protrusion (44) is supported flat, so that the first distance (151.2) of the upper end (152) of the upper

Plant support surface (65.1) of the upper head portion (74) from the horizontal center plane (51) of the projection (44) and the second distance (153.2) of the lower end (154) of the lower abutment support surface (65.2) of the lower

Head portion (75) from the horizontal center plane (51) of the projection (44) are equal.

Arrangement according to claim 1, characterized in that the shoulder (100) in the region of a perpendicular to the horizontal center plane (68) of the slot (67) out ^¬ formed, in the longitudinal direction (101) of the upper wedge Opening (80) extending, the upper wedge opening (80) passing through the vertical plane (90) is arranged.

Arrangement according to claim 2, characterized in that the shoulder (100) is formed with the vertical plane (90) on either side of the vertical plane (90).

Arrangement according to one of the preceding claims, characterized in that the upper head part (74) of the connection head (61) with upper Vertikalaußenflä ^¬ Chen (72.1, 72.2) of upper side wall parts (71.1, 71.2) is limited, with the down (115 ), horizontal, upper slot surfaces (95.1, 95.2) of the slot (67) are limited, and that the heel - slot surface (107) of the shoulder (100) opposite the vertical outer surfaces (72.1, 72.2) of the upper

Side wall parts (71.1, 71.2) in one direction (284) both perpendicular to the transverse direction (118) and perpendicular to the vertical axis (148) inwardly, ie in the direction of an inner space (123) of the connection ^¬ head (61), offset is arranged.

Arrangement according to claim 4, characterized in that the heel-slot surface (107) of the shoulder (100) is offset in relation to the horizontal upper slot surfaces (95.1, 95.2) of the upper side wall parts (71.1, 71.2) in the direction (284) inwardly offset ,

Arrangement according to claim 4 or 5, characterized in that the shoulder (100) is provided with lateral Einführschrä ^¬ gene (285.1, 285.2), each with an inclined surface (286.1, 286.2) is provided, which starting from the horizontal paragraph slot surface (107) of the shoulder (67) extends obliquely upward and laterally to the respective vertical outer surface (72.1, 72.2) of the respective upper side wall portion (71.1, 71.2).

Arrangement according to one of claims 4 to 6, characterized in that the shoulder (100) extends continuously between the upper side wall parts (71.1, 71.2).

Arrangement according to one of the preceding claims, characterized in that the shoulder (100) is provided with a front insertion bevel (282) provided with an inclined surface (113) which extends

extending obliquely forwardly or inwardly (79) and upwards (110) from the horizontal heel slot surface (107) of the heel (67).

Arrangement according to one of the preceding claims, characterized in that the heel-slit surface (107) of the in the support position (281) on the upper boundary surface (48) of the projection (44) surface-supporting paragraph (100) in a vertical first Schiit Zflächen-distance (125) below the provided in the insertion area (93.1) horizontal upper slot surfaces (95.1, 95.2) of the slot (67), and that extending parallel to the horizonta ^¬ len upper slot surfaces (95.1, 95.2) horizontal lower Slit surfaces (96.1, 96.2) of the slot (67) extend in a vertical second slot surface spacing (126) under the lower boundary surface (49) of the projection (44) extending parallel to the upper boundary surface (48) the first Schiit zflächen distance (125) is equal to the second Schiit zflächen distance (126).

Arrangement according to one of the preceding claims, characterized in that the horizontal upper slot surfaces (95.1) of the upper head part (74) and the horizontal lower slot surfaces (95.2) of the lower head part (75) in a first slot height (98) corresponding distance, parallel to each other, on both sides of the horizontal center plane (68) of the slot

(67) leading to said horizontal

Slot surfaces (95.1, 95.2) each having a substantially half of the first slot height (98) corre sponding ^¬ distance and that the first distance (151.1) of the upper end (152) of the upper abutment support surface (65.1) of the upper head part (74 ) (by the Hori ^¬ zontal center plane 68) of the slot (67) and the second distance (153.1) of the lower end (154) of the lower bearing support surface (65.2) of the lower head ^¬ part (75) of the horizontal -Mittenebene (68) of the slot (67) are equal.

Arrangement according to one of the preceding claims, characterized in that the horizontal center plane

(68) of the slot (67) and the horizontal center plane (51) of the projection (44) substantially coincide.

Arrangement according to one of the preceding claims, characterized in that the upper abutment support surface (65.1) of the upper head part (74) and the lower abutment support surface (65.2) of the lower head part (75) are the same size. Arrangement according to one of the preceding claims, characterized in that the upper bearing support surface (65.1) of the upper head part (74) and the lower abutment support surface (65.2) of the lower head part (75) symmetrical to the horizontal center plane (51) of the projection (44) and / or symmetrical to the horizontal center plane (68) of the slot (67) are formed.