DE102012108020A1 - Scaffold latch, has U-profile legs directing U-profile leg-ends away from base profile, and reinforcing profile provided in U-profile in region of base profile surface, where U-profile is provided with two profile ends - Google Patents

Abstract

The latch has first U-profile legs (35.2) provided with first U-profile-leg-ends that are facing away from a base section (31). An U-profile (21) is provided with two profile ends (42.1) in opposite directions in a longitudinal direction (27). A reinforcing profile is provided in the U-profile in a region of a base profile surface. Second U-profile legs direct second U-profile leg-ends (60.1, 60.2) away from a second base profile (51). Second U-shaped legs are provided in a region of the second U-profile-leg-ends.

Description

The invention relates to a metal scaffold with an elongated, rod-shaped, in a first longitudinal direction in a first longitudinal direction extending first U-profile made of sheet steel, which is open in an installed position upwards and viewed in the first longitudinal direction a first U Has profile length and a first U-profile longitudinal center and viewed in a direction perpendicular to the first longitudinal axis cross-section substantially over its entire first U-profile length has a U-shaped first U-profile cross-section and with a is formed in the first longitudinal direction extending first base profile having a in the installed position downwardly facing first base profile surface and in a first transverse direction perpendicular to the first longitudinal axis viewed a first base profile width, wherein of the first base profile two lateral first U-profile legs bent or turned over or bent sin d extending vertically upward from the first base profile or from its first base profile surface in a same direction and at a first transverse spacing corresponding to the first base profile width substantially parallel to one another in the installed position, and wherein the first U-profile legs have free first U-profile leg ends facing away from the first base profile and forming the support edges for laying and / or suspending scaffold plies, and wherein the first U-profile is two extending in opposite directions in the first longitudinal direction away from one another extending first profile ends, on each of which a connection head made of metal, in particular malleable cast iron, gray cast iron, cast steel or steel, for releasably securing the scaffolding bar in the installed position on one with at least one Opening provided fastening element of a scaffold element by means of a plug-in through the opening connection wedge is welded, and wherein on the first U-profile in the region of its first base-profile surface, a reinforcing profile of sheet steel is welded, which extends in the installed position to below the first base profile of the first U-profile and extending in the direction a second longitudinal axis extending in a second longitudinal direction parallel to the first U-profile or parallel to the first longitudinal axis while bridging the first U-profile longitudinal center along the first U-profile continuously over a reinforcing profile length, at least half of the first U-profile length of the first U-profile corresponds.

Such a scaffolding bar is out of practice and from the prospectus "Catalog and Price List" for the "Layher Allround Scaffolding System" of the applicant, issue 01.04.2011 in the form of on page 12 This brochure has been published and there known as "U-bar, reinforced" scaffold bar known. The reinforcing profile of this "U-bolt" has a V-shaped cross section and the inner cross section is triangular. The reinforcing profile is produced by folding or bending a substantially flat steel sheet around a single bending or bending axis. Both the U-profile and the reinforcing profile are made of a steel sheet material with a yield strength of about 235 N / mm ² . Although this Gerustriegel has proven in practice in many cases well, it has been shown that this "U-bolt, reinforced" in certain applications, for example, at larger spans, the existing requirements for a higher flexural strength or load capacity does not meet , Therefore, the applicant has also offered a so-called "U-double bar", also in the aforementioned Product brochure on page 12 is shown. Also this "double U-bolt" has proven itself in practice. This "U-double bar" has a top U-profile with two welded at the ends connecting heads and has a downwardly projecting bottom flange profile in the form of a round tube. The lower flange profile is therefore also called "lower flange O-profile". The round tube is welded to the ends of its upwardly angled tube parts on the upper flange U-profile. The lower flange profile is further connected by a plurality of spaced in the longitudinal direction of the "U-double bolt" spaced and each one vertical distance mediating support plates connected to the upper flange U-profile by welding. The upper belt U-profile, the lower belt O-profile and the support plates are also made of a steel material having a yield strength of about 235 N / mm ² . Although such U-double bar has over the said "U-bar" a greater flexural strength or load capacity, but a significantly greater overall height. This leads to the fact that in a proper installation of such a "U-double bolt" in a framework in which the connection heads of the "U-double bolt" arranged horizontally adjacent to substantially the same height perforated discs of two horizontally adjacent or . is erected at the level of the scaffolding floors of a next floor, the down-projecting lower flange O-profile correspondingly reduces the passage height. This can lead to obstructions in the passage of people on or off the floor. walk the scaffolding floors of a lower floor. Apart from these disadvantages, such "U-double bars" are comparatively expensive.

It is therefore an object of the invention to provide a scaffold crucible of the type mentioned, with a simple and relatively inexpensive manufacturability and easier and safer handling and at Comparatively low overall height has a comparatively high flexural strength or load capacity.

This object is achieved in a surprisingly simple manner by the features of claim 1, in particular characterized in that the reinforcing profile is designed as a second U-profile, viewed in a perpendicular to the second longitudinal axis cross-section substantially over its entire Verstärkungsprofil- Length has a U-shaped second U-profile cross-section and which is designed with a extending in the second longitudinal direction second base profile, which in a second transverse direction perpendicular to the second longitudinal axis considered a second base profile width and in the installation position has downwardly facing second base-profile surface, wherein bent from the second base profile, two lateral second U-profile legs or bent or bent, which are away from the second base profile in a same direction and in a second transverse distance corresponding to the second base profile width substantially parallel z in the installed position extend vertically upwards, and wherein the second U-profile legs have second U-profile leg ends facing away from the second base profile and its second base-profile surface, and wherein the second U-profile legs are welded in the region of their second U-profile leg ends or with their second U-profile leg ends to the first U-profile in the region of the first base profile surface.

According to an advantageous development, provision may be made for the first U-profile legs to have first double-wall regions formed in the region of their first U-profile leg ends by folding or bending over or bending over and / or that the second U-profile Have in the region of their second U-profile leg ends by folding or turning or bending or crimping formed second double wall portions. As a result, the flexural strength and load capacity can be further increased with simple and cost-effective manufacturability, and at the same time an advantageous edge reinforcement of the upper support edge of the U-profile leg ends in the installed position is reached for supporting or suspending framework floors.

Preferably, the first double-walled regions can be formed by bending or bending or bending inwards in a laterally bounded by the two first U-profile legs and the first base profile first U-profile interior and / or can the second Double wall areas be formed by folding or turning or bending or crimping inwards in a laterally bounded by the two second U-profile legs and the second base profile second U-profile interior. This means a simple and cost-effective production and at the same time an easy and particularly safe handling, because on the outside no sharp burrs are present.

The first U-profile and / or the second U-profile can or can by forming, in particular by bending or bending and / or folding or profiling a, preferably substantially flat, steel sheet, for example on a roller train or through Profiling be prepared.

According to a preferred embodiment, it may be provided that the first U-profile legs of the first U-profile extend substantially perpendicular to the first base profile thereof and / or that the second U-profile legs of the second U -Profiles substantially perpendicular to the second base profile extending therefrom. As a result, the bending strength or load-bearing capacity of the scaffolding crucible according to the invention can be further increased while continuing to be simple and cost-effective to produce as well as easier and safer to handle.

A further improvement in terms of the above advantages can be achieved according to a particularly preferred embodiment in that the second U-profile is arranged substantially symmetrically to the first U-profile longitudinal center of the first U-profile welded to the first U-profile and / or designed substantially symmetrically to an imaginary plane of symmetry or longitudinal center transverse plane running in the second U-profile longitudinal center and perpendicular to the second longitudinal axis.

A further improvement in terms of the above advantages can be achieved in that the first U-profile legs have a substantially identical first leg height that is greater than the first base profile width and / or that the second U-profile leg. Profile legs have a substantially same second leg height, which is greater than the second base profile width.

According to a very particularly preferred embodiment, it can be provided that the first U-profile and the second U-profile form a double U-profile, which considered in a perpendicular to the first longitudinal axis or perpendicular to the second longitudinal axis extending cross section a double Profile height that is more than twice the first base profile width and / or more than twice the size of the second base profile width. As a result, the flexural strength or load-bearing capacity of the scaffold bar according to the invention can be increased to a very particular extent.

According to an advantageous development, it can be provided that the first base profile width and the second base profile width are substantially equal. As a result, a further improvement in terms of the above advantages can be achieved. In addition, favorable transport and storage conditions are created.

According to a very particularly preferred embodiment it can be provided that the first U-profile cross section of the first U-profile and the second U-profile cross section of the second U-profile are formed substantially identical or the same. This results in considerable production and cost advantages.

Conveniently, the second U-profile legs may be welded with their second U-profile leg ends to the first base profile surface of the first base profile of the first U-profile. As a result, a particularly simple and cost-effective production and particularly advantageous weld seam conditions can be achieved in conjunction with a particularly high flexural strength or load-bearing capacity of the scaffold bar according to the invention.

According to a very particularly preferred embodiment it can be provided that the first U-profile and / or the second U-profile consists of a sheet steel material having a yield strength of at least 450 N / mm ² to 470 N / mm is ² or at least 460 N / mm ² . The first U-profile and / or the second U-profile preferably consist of the steel material S460 or the first U-profile and / or the second U-profile are made of the steel material S460. The use of such a high-strength steel material allows a significantly improved flexural strength or load-bearing capacity of the scaffold bar produced therefrom.

The connection head may preferably be designed with an upper head part and a lower head part, between which a slot open towards the front for attaching the connection head can be formed on the fastening element provided with an opening, preferably with a plurality of openings, for example fastening flange. The connection head can have at least one wedge opening for insertion or insertion of the connection wedge.

When the terminal head is formed with an upper header and a lower header and a slot formed therebetween, both the upper header and the lower header may be provided with wedge openings for inserting the terminal wedge. The connection head may be formed with vertical in the installed position side surfaces. The slot may also be designed to be open to the side surfaces. The side surfaces may include a wedge angle, preferably about 45 degrees or about 46 degrees, with the side surfaces forward toward a center, preferably a stem and / or disk center of a perforated disk, and / or toward a central axis of the disk Scaffold element, preferably in the direction of a stem axis of a scaffold stem, may be formed tapered. The connecting wedge may preferably be captively fastened to the connection head, preferably with the aid of a securing element, for example a rivet, which prevents it from being removed, in particular withdrawn, from the connection head. It is understood, however, that the respective connection head can also be designed differently. For example, the connection head can be provided with a transversal, preferably approximately perpendicular, to the first longitudinal axis of the first U-profile and in the installed position downwards, in particular to below the first U-profile surface of the first U-profile extending Einstecknase. About this lug of the connection head in the vertical direction or in the direction of a perforation axis of the opening of the fastener to the fastener of the scaffold element is releasably fastened. In other words, such a connection head can be detachably fastened or fastened to the fastening element having at least one opening in such a way that its insertion nose is inserted through the opening of the fastening element in the vertical direction. This, in contrast to the above-mentioned embodiment of a scaffold crucible in which the respective connection head has a forwardly open and horizontal slot in the installed position, which allows or requires a horizontal attachment to the fastener and is thus mounted horizontally on the perforated disc or becomes.

The fastening element may preferably be a perforated disc of a framework element, preferably a scaffold tube, in particular a scaffolding frame, which has at least one opening, preferably a plurality of apertures arranged circumferentially, preferably in the same circumferential direction, in particular of 45 degrees.

The invention also relates to an arrangement and / or a scaffolding frame and / or a scaffold, with at least two vertical scaffold tubes or scaffolding posts, to each of which at least one fastener provided with at least one opening, in particular fastening flange, preferably perforated disc, is attached to the one Scaffold bar according to the invention, in particular according to one of claims 1 to 10, in such a way is fastened, that each connection head by means of the respective, inserted through the respective opening of the respective fastener connection wedge is releasably secured or wedged.

It is understood that the above features and measures within the feasibility of the invention are arbitrarily combinable.

Further advantages, features and aspects of the invention can be taken from the following description part, in which a preferred embodiment of the invention with reference to the figures.

Show it:

1 a side view of a scaffold crucible according to the invention, the latter being shown in phantom to illustrate its installation position and its mounting on two vertical scaffolding elements;

2 a plan view of the Gerstriegel;

3 an enlarged side view of the Gerstriegel in the area of 1 left end shown with partial section in the connection area of a connection head;

4 an enlarged plan view of the Gerstriegel in the area of 1 right end;

5 a greatly enlarged cross section of the designed as a double-U-bar scaffolding bar along the section lines 5-5 in 1 ;

6 a three-dimensional representation of a mounted in an installed position on the perforated disks of two scaffold stems scaffolding bar.

The scaffold bar shown in the figures 20 made of metal comprises as essential elements a first U-profile 21 made of sheet steel, a second U-profile 22 made of sheet steel and two connection heads 23.1 . 23.2 , made of metal, preferably of malleable cast iron. The two U-profiles together form a double U-profile 70 out. The steel sheet of the first U-profile has substantially a wall thickness 58.1 on and the steel sheet of the second U-profile 22 essentially has a wall thickness 58.2 on. The wall thicknesses 58.1 . 58.2 are the same size here 5 ). Preferably, the wall thicknesses amount 58.1 . 58.2 about 2.5 mm. The steel sheets of the U-profiles 21 . 22 or the U-profiles 21 . 22 may preferably be hot-dip galvanized to ensure good surface protection. The steel sheets or the U-profiles 21 . 22 each consist of a steel material whose yield strength is at least 460 N / mm ² . The U-profiles 21 . 22 are each made of steel material S460 or consist of steel material S460. It is therefore a high-strength steel material. It is understood that the two steel sheets of the two U-profiles 21 . 22 may also be made of different steel materials, in particular from different yield strengths and / or strength steel materials.

At the first U-profile 21 it is an elongated, rod-shaped, in the direction of a first longitudinal axis 26 in a first longitudinal direction 27 extending support profile. It points in a direction perpendicular to the first longitudinal axis 26 extending cross section viewed along its entire first U-profile length 28 a U-shaped first U-profile cross-section 30 on. The first U-profile 21 is with one in the first longitudinal direction 27 extending first base profile 31 designed. The first base profile 31 has except for edge regions a substantially flat first base profile surface 32 on, in the installation position 25 downward 56 has. The first base profile 31 points in a first in the installed position 25 horizontal transverse direction 33 perpendicular to the first longitudinal axis 26 considers a first base profile width 34 on. From the first base profile 31 are laterally two first U-profile legs 35.1 . 35.2 bent, which is substantially perpendicular to the first base profile 31 or from its in the installed position lower first base profile surface 32 away in the same direction and in one of the first base profile widths 34 corresponding first transverse distance substantially parallel to each other in the installed position 25 vertically upwards 36 extend. The first U-profile legs 35.1 . 35.2 have free first U-leg ends 37.1 . 37.2 on top of that from the first base profile 31 or from its first base profile surface 32 in the installation position 25 up 36 away and the support edges 38.1 . 38.2 for laying on and / or hanging scaffold coverings 39 . 39.1 form. In 6 are several with hanging claws 40 provided scaffold coverings 39 . 39.1 shown over their hanging claws 40 on the scaffolding bar 20 are hung. Here are the Einhängekrallen 40 on the bed edge 38.2 of the first U-profile leg 35.1 of the first U-profile 21 on. The one scaffold decking 39.1 has one compared to the other scaffold planks 39 smaller width. It is understood that other combinations of scaffolding are possible.

The first U-profile 21 has two in opposite directions in the first longitudinal direction 27 extending away from each other first profile ends 42.1 . 42.2 on. At the first profile ends 42.1 . 42.2 is in each case a connection head 23.1 . 23.2 welded. The connection heads 23.1 . 23.2 serve for releasably securing the scaffolding bar 20 in the installation position 25 at one with at least one perforation 78.1 . 78.2 provided fastener 41 a scaffolding element 45.1 . 45.2 by means of a through the opening 78.1 . 78.2 pluggable connection wedge 24.1 . 24.2 , In the longitudinal center between the two first profile ends 42.1 . 42.2 of the first U-profile 21 is a first U-profile longitudinal center 29 of the first U-profile 21 , There is perpendicular to the first longitudinal axis 26 an imaginary longitudinal center transverse plane 66 , The first U-profile 21 is symmetrical to the longitudinal center transverse plane 66 designed. The first U-profile 21 is also symmetrical to the one perpendicular to the longitudinal center transverse plane 66 extending and the first longitudinal axis 26 containing imaginary transverse center longitudinal plane 91 designed.

At the first U-profile is at the in the installed position 25 lower, first base profile surface 32 serving as a reinforcing profile second U-profile 22 welded. The second U-profile 22 extends in the installation position 25 after below the first base profile 31 of the first U-profile 21 , Furthermore, the second U-profile extends 22 in the direction of a second longitudinal axis 46 in a second longitudinal direction 47 parallel to the first U-profile 21 or parallel to its first longitudinal axis 26 , while bridging the first U-profile longitudinal center 29 or the longitudinal center transverse plane 66 , along the first U-profile 21 through a second U-profile length, also referred to as a reinforcing profile length 48 that is at least half of the first U-profile length 28 of the first U-profile 21 equivalent. In the embodiment shown, the second U-profile length is 48 preferably 1224 mm, while the first U-profile length 28 preferably 1424 mm. In an alternative embodiment, not shown in the figures, the second U-profile length may preferably be 1724 mm, while the first U-profile length may preferably be 1924 mm. It is understood that in the context of the technical teaching of the invention, other U-profile lengths and combinations thereof are conceivable. In the embodiment shown, the first longitudinal axis run 26 of the first U-profile 21 and the second longitudinal axis 46 of the second U-profile 22 parallel to each other. Both the first longitudinal axis 26 of the first U-profile 21 as well as the second longitudinal axis 46 of the second U-profile 22 are in the imaginary transverse center longitudinal plane 91 arranged in the installed position 25 runs vertically. The second profile ends 60.1 . 60.2 of the second U-profile 22 point to the first profile ends 42.1 . 42.2 of the first U-profile 21 one longitudinal distance each 72.1 . 72.2 on. This is preferably about 100 mm in the embodiment shown. Also in the above-mentioned alternative embodiment of a longer scaffold, the longitudinal distances of the profile ends of the second U-profile of the profile ends of the first U-profile are the same size, in particular the same size as in the first embodiment shown in the figures. Also, these longitudinal distances may thus preferably each be about 100 mm. The in the installation position 25 vertical contact surfaces 90.1 . 90.2 of the respective connection head 23.1 . 23.2 show the respective 24 first profile end 42.1 . 42.2 of the first U-profile, each perpendicular to the first longitudinal axis 26 extending first U-profile end faces is limited, one of the respective length or depth of the respective connection head 23.1 . 23.2 corresponding longitudinal distance 73.1 . 73.2 on. This is preferably about 50 mm. In the in the 1 and 2 shown installation position 25 have the facing away from each other contact surfaces 90.1 . 90.2 the connection heads 23.1 . 23.2 a longitudinal distance 77 from each other. The longitudinal distance 77 is in the embodiment shown preferably about 1524 mm. In that in its installation position 25 installed and on the scaffolding elements or on their fasteners or perforated discs 45.1 . 45.2 by means of the respective connection wedge 24.2 . 24.2 festgekeilten state of the scaffolding crucible shown in the figures 20 is the axial dimension or the horizontal distance 74 between the longitudinal axes 76.1 . 76.2 the scaffolding elements or scaffolding posts 45.1 . 45.2 about 1524 mm. In the case of the above-mentioned alternative girder, the longitudinal distance may preferably be about 2024 mm and the axial distance or the horizontal distance may be about 2072 mm.

The second U-profile 22 points in a direction perpendicular to the second longitudinal axis 46 extending cross section considered substantially along its entire second U-profile length 48 a U-shaped second U-profile cross-section 50 on. The second U-profile 22 is in the designed as a double U-profile area of the Gerstriegel 20 in which the second U-profile 22 welded to the first U-profile, cross-sectionally closed. It has an approximately or substantially rectangular internal cross-section or an approximately or substantially rectangular-shaped limited second U-profile interior 64 on. The second U-profile 22 is with one in the second longitudinal direction 47 extending second base profile 51 designed. The second base profile 51 indicates in one in the installed position 25 horizontal, second transverse direction 53 perpendicular to the second longitudinal axis 47 consider a second base profile width 54 and one in the installation position 25 downwardly facing second base profile surface 52 which is an outer surface. From the second base profile 51 are laterally two second U-profile legs 55.1 . 55.2 bent, which is substantially perpendicular to the second base profile 22 or of its in the installed position 25 lower, second base profile surface 52 away in a same direction and in one of the second base profile widths 54 corresponding second transverse distance substantially parallel to each other in the installed position 25 vertically upwards 36 extend. The second U-profile legs 55.1 . 55.2 have second U-profile leg ends 57.1 . 57.2 on that from the second base profile 22 or from its second base profile surface 52 away, in the installation position 25 up 36 , The second U-profile legs are with their or via their second U-profile leg ends 57.1 . 57.2 at the in the installation position 25 downward 56 pointing first base profile surface 32 of the first U-profile 21 welded.

How out 5 As can be seen, the first U-profile legs 35.1 . 35.2 in the area of their first U-profile leg ends 37.1 . 37.2 formed by folding or turning or bending or crimping first double wall areas 61.1 . 61.2 and also the second U-profile legs 55.1 . 55.2 may be in the range of their second U-leg ends 57.1 . 57.2 formed by folding or turning or bending or crimping second double wall areas 62.1 . 62.2 exhibit. The double wall areas 61.1 , 61.2 ; 62.1 . 62.2 are each formed with two sheet steel wall parts. The steel sheet wall parts are arranged here at a small distance from each other. However, it goes without saying that corresponding steel sheet wall parts forming a double wall region or the double wall regions can also abut each other directly. In the embodiment shown, both the first double wall areas 61.1 . 61.2 as well as the second double wall areas 62.1 . 62.2 by bending inward in a laterally through the respective two U-profile legs 35.1 . 35.2 ; 55.1 . 55.2 and the respective base profile 31 ; 51 limited U-profile interior 63 ; 64 educated.

The second U-profile 22 is substantially symmetrical to the first U-profile longitudinal center 29 or to the imaginary longitudinal center transverse plane 66 arranged on the first U-profile 21 welded. Furthermore, the second U-profile 22 symmetrical to the, the second U-profile longitudinal center 49 containing and perpendicular to the second longitudinal axis 46 extending imaginary plane of symmetry or longitudinal center transverse plane 66 designed. The second U-profile 22 is also symmetrical to both the first longitudinal axis 26 as well as the second longitudinal axis 46 containing imaginary transverse center longitudinal plane 91 designed.

As in particular from the 1 and 3 can be seen, is the second U-profile 22 at its facing away from each other second profile ends 60.1 . 60.2 each with a bevel 82 Mistake. This runs in each case in a preferably 45 degrees angle 86 starting from the second base profile surface 52 sloping upwards towards the first base profile surface 32 of the first U-profile 21 , The respective bevel 87 has a length 88 and a width 89 on. Preferably, the length 88 and the width 89 same size. The length 88 and the width 89 may preferably be 40 mm. The bevel 87 or their width 89 is preferably formed such that the second double edge regions 62.1 . 62.2 of the second U-profile 22 in the area of the second U-profile leg ends 57.1 . 57.2 without chamfering or free from bevel 87 stay.

As in particular from 5 can be seen, the first U-profile legs 35.1 . 35.2 a substantially same first leg height 67 which is larger than the first base profile width 34 , Also the second U-profile leg 55.1 . 55.2 have a substantially same second leg height 68 which is larger than the second base profile width 54 , In the embodiment shown, the first leg heights are 67 and the second leg heights 68 same size. The thigh highs 67 . 68 may preferably be 53 mm. Also, in the embodiment shown, the first base profile width 34 and the second base profile width 54 same size. The base profile widths 34 . 54 may preferably be 49 mm.

The second U-profile cross section 50 corresponds in the preferred embodiment shown, the first U-profile cross-section 30 of the first U-profile 21 , Both U-profile cross sections 30 . 50 are therefore essentially identical or identical. Both U-profiles 21 . 22 can be made particularly cost by cutting to length a U-shaped steel sheet having the desired profile cross-section. Such a U-profile steel sheet or the first U-profile and the second U-profile may preferably be made on a roller line. This can also be called profiling. In this case, a substantially flat steel sheet is formed by means of rollers, in particular bent off or bent over.

As mentioned above, form the first U-profile 21 and the second U-profile 22 a double U-profile 70 out. As in 5 can be seen, has the double U-profile 70 in a direction perpendicular to the first longitudinal axis 26 or perpendicular to the second longitudinal axis 46 extending cross-section considered a double-profile height 71 which is more than twice the size of the first base profile width 34 and which is more than twice the size of the second base profile width 54 , The double profile height may preferably be about 106 mm.

The two connection heads 23.1 . 23.2 of the first U-profile 21 or of the scaffolding crossbar 20 are preferably the same design. It is understood, however, that the connection heads can also be designed differently for certain applications. According to the preferred embodiment shown in the figures, each connection head has 23.1 . 23.2 an upper headboard 79.1 and one lower headboard 79.2 , between which one in the installation position 25 horizontal slot 80 for attaching the respective connection head 23.1 . 23.2 on a perforated disc 41 a scaffolding element 45.1 . 45.2 is trained. The upper headboard 79.1 points in the installation position 25 upper vertical outer or side surfaces 82.1 . 82.2 on and the lower headboard 79.2 has lower vertical outer or side surfaces in the installed position 83.1 . 83.2 , The upper outer or side surfaces 82.1 . 82.2 and the lower outer and side surfaces 83.1 . 83.2 extend forward from the first U-profile 21 away wedge-shaped, including one, preferably about 45 or about 46 degrees, wedge angle 92 towards one in the installation position 25 vertical axis or tapering towards a center.

Preferably, this may be a stem and / or disk center of the respective perforated disk 41 act. The respective connection wedge 24.1 . 24.2 can preferably be captive on the respective connection head 23.1 . 23.2 be attached, preferably by means of a rivet 75 , Each connection head 23.1 . 23.2 has a connection part 93 and a part of the investment 94 on. The respective connection head 23.1 . 23.2 is with the connection part 93 at the profile ends 42.1 . 42.2 of the first U-profile 21 fixed by welding. To this tick points the connection part 93 several, preferably three, centering and / or welding lugs 84.1 . 84.2 . 84.3 on, by means of which the respective connection head 23.1 . 23.2 in the first U-profile interior 63 of the first U-profile 21 is plugged in. The respective connection head 23.1 . 23.2 is over outer welds 85 with the first U-profile 21 welded. Preferably, the respective connection head 23.1 . 23.2 with its centering and / or welding lugs 84.1 . 84.2 . 84.2 also over inner welds with the first U-profile 21 be welded.

The scaffolding bar 20 can with its connection heads 23.1 . 23.2 over the respective slot on each perforated disc 41 a scaffolding element or scaffolding handle 45.1 . 45.2 can be plugged and can in the plugged state in the installed position 25 with the help of its respective connection wedge 24.1 . 24.2 at the perforated disc 41 , preferably by means of a hammer blow, be wedged. The perforated disc 41 has several openings in a conventional manner 78.1 . 78.2 on, which can be arranged at a circumferential angle of 45 degrees to each other, with small openings 78.1 and big openings 78.2 can be arranged alternately ( 4 ).

The investment part 94 of the respective connection head 23.1 . 23.2 has contact surfaces 90.1 . 90.2 on, in the installation position 25 in the means of the respective connecting wedge 24.1 . 24.2 festgekeiltten state on the outer surface of the scaffold tube of the scaffolding element or scaffolding handle 45.1 . 45.2 issue. The outer surface 90.1 of the upper headboard 79.1 and the outer surface 90.2 of the lower header 79.2 are concave, in particular with a the outer radius of the outer surface of the scaffold tube of the scaffolding element or scaffolding handle 45.1 . 45.2 corresponding radius radiused designed to keep the notch stresses low in the investment area.

LIST OF REFERENCE NUMBERS

20

 Scaffolding bolt / bolt carrier

21

 first U-profile

22

 second U-profile

23.1

 connection head

23.2

 connection head

24.1

 connecting wedge

24.2

 connecting wedge

25

 installation position

26

 first longitudinal axis

27

 first longitudinal direction

28

 first U-profile length

29

 first U-profile longitudinal center

30

 first U-profile cross section

31

 first base profile

32

 first base profile surface

33

 first transverse direction

34

 first base profile width

35.1

 first U-profile leg

35.2

 first U-profile leg

36

 Direction / upwards

37.1

 first U-profile thigh end

38.1

 supporting edge

38.2

 supporting edge

39

 scaffolding platform

39.1

 scaffolding platform

40

 Einhängekralle

41

 Fastener / mounting flange / perforated disc

42.1

 first profile end

42.2

 first profile end

45.1

 Scaffolding element / frame strut

45.2

 Scaffolding element / frame strut

46

 second longitudinal axis

47

 second longitudinal direction

48

 Reinforcing profile length / second U-profile length

49

 Reinforcement profile longitudinal center / second U-profile longitudinal center

50

 second U-profile cross-section

51

 second base profile surface

52

 second base profile surface

53

 second transverse direction

54

 second base profile width

55.1

 second U-profile leg

55.2

 second U-profile leg

56

 Direction / down

57.1

 second U-profile leg end

57.2

 second U-profile leg end

58.1

 wall thickness

58.2

 wall thickness

59

 Weld seam / weld points

60.1

 second profile end

60.2

 second profile end

61.1

 first double wall area

61.2

 first double wall area

62.1

 second double wall area

62.1

 second double wall area

63

 first U-profile interior

64

 second U-profile interior

65

 cavity

66

 Plane of symmetry / longitudinal mid-transverse plane

67

 first leg height

68

 second leg height

70

 Double (U -) - Profile

71

 Double-profile height

72.1

 Longitudinal distance

72.2

 Longitudinal distance

73.1

 Longitudinal distance / length / depth

73.2

 Longitudinal distance / length / depth

74

 (Horizontal) distance / axial dimension

75

 rivet

76.1

Longitudinal axis of 45.1

76.2

Longitudinal axis of 45.2

77

 (Longitudinal) distance

78.1

 Opening / through hole (small)

78.2

 Breakthrough / through hole (large)

79.1

 upper headboard

79.2

 lower headboard

80

 (horizontal) slot

81.1

 (upper) wedge opening

81.2

 (lower) wedge opening

82.1

 upper vertical outer surface / side surface

82.2

 upper vertical outer surface / side surface

83.1

lower vertical outer surface / side surface

83.2

 lower vertical outer surface / side surface

84.1

 Centering or welding cloth

84.2

 Centering or welding cloth

84.3

 Centering or welding cloth

85

 Weld

86

 angle

87

 bevel

88

length of 87

89

Width of 87

90.1

 (upper) contact surface

90.2

 (lower) contact surface

91

 Plane of symmetry / cross mid-longitudinal plane

92

 wedge angle

93

 connector

94

 plant part

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• "Catalog and Price List" for the "Layher Allround Scaffolding System" of the applicant, issue 01.04.2011 in the form of on page 12 [0002]
• Product brochure on page 12 [0002]

Claims (10)

Scaffold ( 20 ) made of metal with an elongated, rod-shaped, in the direction of a first longitudinal axis ( 26 ) in a first longitudinal direction ( 27 ) extending first U-profile ( 21 ) made of sheet steel, which is in a position ( 25 ) is open at the top and in the first longitudinal direction ( 27 ) considers a first U-profile length ( 48 ) and a first U-profile longitudinal center ( 29 ) and that in a direction perpendicular to the first longitudinal axis ( 26 ) extending cross-section substantially over its entire first U-profile length ( 48 ) a U-shaped first U-profile cross section ( 30 ) and having a in the first longitudinal direction ( 27 ) extending first base profile ( 31 ), one in the installed position ( 25 ) downwardly facing first base profile surface ( 32 ) and in a first transverse direction ( 33 ) perpendicular to the first longitudinal axis ( 26 ) considers a first base profile width ( 34 ), wherein from the first base profile ( 31 ) two lateral first U-profile legs ( 35.1 . 35.2 ) or bent or bent away from the first base profile ( 31 ) away in the same direction ( 36 ) and in one of the first base profile widths ( 34 ) corresponding to the first transverse distance substantially parallel to each other in the installed position ( 25 ) vertically upwards ( 36 ), and wherein the first U-profile legs ( 35.1 . 35.2 ) free first U-profile leg ends ( 37.1 . 37.2 ) derived from the first base profile ( 31 ) and the Auflageränder ( 38.1 . 38.2 ) for laying and / or suspending scaffold coverings ( 39 . 39.1 ), and wherein the first U-profile ( 21 ) two in opposite directions in the first longitudinal direction ( 27 ) extending away from each other first profile ends ( 42.1 . 42.1 ), to each of which a connection head ( 23.1 . 23.2 ) of metal for releasably securing the scaffold bar ( 20 ) in the installed position ( 25 ) at one with at least one opening ( 78.1 . 78.2 ) fastener ( 41 ) of a scaffolding element ( 45.1 . 45.2 ) by means of a through the opening ( 78.1 . 78.2 ) pluggable connection wedge ( 24.1 . 24.2 ), and wherein at the first U-profile ( 21 ) in the area of its first base profile surface ( 32 ) a reinforcing profile of sheet steel is welded, which in the installed position ( 25 ) to below the first base profile ( 31 ) of the first U-profile ( 21 ) and extending in the direction of a second longitudinal axis ( 46 ) in a second longitudinal direction ( 47 ) parallel to the first U-profile ( 21 ) or parallel to its first longitudinal axis ( 26 ) while bridging the first U-profile longitudinal center ( 29 ) along the first U-profile ( 21 ) throughout a gain profile length ( 48 ), which is at least half of the first U-profile length ( 28 ) of the first U-profile ( 21 ), characterized in that the reinforcing profile as a second U-profile ( 22 ) formed in a direction perpendicular to the second longitudinal axis ( 46 ) extending cross-section substantially over its entire gain profile length ( 48 ) a U-shaped second U-profile cross section ( 50 ) and having a in the second longitudinal direction ( 47 ) extending second base profile ( 51 ) designed in a second transverse direction ( 53 ) perpendicular to the second longitudinal axis ( 46 ) considers a second base profile width ( 54 ) and one in the installed position ( 25 ) downwardly facing second base profile surface ( 52 ), wherein from the second base profile ( 51 ) two lateral second U-profile legs ( 55.1 . 55.2 ) are bent or bent or bent away from the second base profile ( 51 ) in a same direction and in a second base profile width ( 54 ) corresponding to the second transverse distance substantially parallel to each other in the installed position ( 25 ) vertically upwards ( 36 ), and wherein the second U-profile legs ( 55.1 . 55.2 ) second U-profile leg ends ( 60.1 . 60.2 ) derived from the second base profile ( 51 ), and wherein the second U-profile legs ( 55.1 . 55.2 ) in the region of their second U-profile leg ends ( 60.1 . 60.2 ) or with their second U-profile leg ends ( 60.1 . 60.2 ) on the first U-profile ( 21 ) in the area of its first base profile surface ( 32 ) are welded. Scaffold frame according to claim 1, characterized in that the first U-profile legs ( 35.1 . 35.2 ) in the region of their first U-profile leg ends ( 37.1 . 37.2 ) formed by folding or turning or turning first double wall areas ( 61.1 . 61.2 ) and / or that the second U-profile legs ( 55.1 . 55.2 ) in the region of their second U-profile leg ends ( 57.1 . 57.2 ) formed by folding or turning or bending second double wall areas ( 62.1 . 62.2 ) exhibit. Scaffolding frame according to claim 2, characterized in that the first double wall areas ( 62.1 . 62.2 ) by folding or turning or turning inwards in a laterally through the two first U-profile legs ( 35.1 . 35.2 ) and the first base profile ( 31 ) limited first U-profile interior ( 63 ) are formed and / or that the second double wall areas ( 62.1 . 62.2 ) by bending or turning or turning inwards in a laterally through the two second U-profile legs ( 55.1 . 55.2 ) and the second base profile ( 51 ) limited second U-profile interior ( 64 ) are formed. Scaffolding frame according to one of the preceding claims, characterized in that the first U-profile legs ( 35.1 . 35.2 ) of the first U-profile ( 21 ) substantially perpendicular to the first base profile ( 31 ) extend from this and / or that the second U-profile legs ( 55.1 . 55.2 ) of the second U-profile ( 22 ) essentially perpendicular to the second base profile ( 51 ) extend away from it. Scaffolding frame according to one of the preceding claims, characterized in that the second U-profile ( 22 ) substantially symmetrical to the first U-profile longitudinal center ( 29 ) of the first U-profile ( 21 ) arranged on the first U-profile ( 21 ) is welded and / or substantially symmetrical to an imaginary, in the second U-profile longitudinal center ( 49 ) and perpendicular to the second longitudinal axis ( 46 ) extending symmetry plane ( 66 ) is designed. Scaffolding frame according to one of the preceding claims, characterized in that the first U-profile limbs ( 35.1 . 35.2 ) has a substantially same first leg height ( 67 ) which is greater than the first base profile width ( 34 ) and / or that the second U-profile legs ( 55.1 . 55.2 ) has a substantially same second leg height ( 68 ) which is greater than the second base profile width ( 54 ). Scaffolding frame according to one of the preceding claims, characterized in that the first U-profile ( 21 ) and the second U-profile ( 22 ) a double profile ( 70 ) formed in a direction perpendicular to the first longitudinal axis ( 26 ) or perpendicular to the second longitudinal axis ( 46 ) extending cross-section considered a double-profile height ( 71 ) which is more than twice the size of the first base profile width ( 34 ) and / or which is more than twice the size of the second base profile width ( 54 ). Scaffolding frame according to one of the preceding claims, characterized in that the first base profile width ( 34 ) and the second base profile width ( 54 ) are substantially the same size. Scaffolding frame according to one of the preceding claims, characterized in that the first U-profile cross-section ( 30 ) of the first U-profile ( 21 ) and the second U-profile cross section ( 50 ) of the second U-profile ( 22 ) are formed substantially identical. Scaffolding frame according to one of the preceding claims, characterized in that the first U-profile ( 21 ) and / or the second U-profile ( 22 ) is made of a sheet steel material having a yield strength of at least 450 N / mm ² to 470 N / mm ² or at least 460 N / mm ² .

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