EP3354818B1 - Length alignment assembly for construction scaffolding - Google Patents

Description

Technical area

The invention relates to a length compensation arrangement for scaffolding, according to claim 1.

State of the art

In the case of the fitting in of buildings, the problem often arises that the required framework length can not be achieved by a combination of system framework fields. Especially in the area of building corners, no system solution with standardized framework field lengths is possible in such cases, because this would result in large wall clearances. Correction options via the lateral wall clearances are minimal in practice, since a certain minimum distance to the wall, which is necessary for carrying out work, must also be taken into account. Therefore, it is often the case that gaps between individual scaffold floors must be bridged.

In practice, various approaches are known to accomplish such a bridging. These include the installation of a telescopic frame, the installation of a frontal bracket widening, the installation of a variable length slot, which is closed with wooden planks or steel planks and pipe coupling railing, and the crossing of the two scaffolding fields with height offset by at least the complete scaffolding floor height.

Unfortunately, all the above methods have serious disadvantages and significant limitations. Thus, for example, a telescopic frame can only be installed from one side of the building with at least three frame panels, since the telescopic frame must be installed between the two diagonal panels. In addition, telescopic scaffolding fields are relatively expensive to buy and also bring with it an increased risk of accidents, since an unwanted retraction or extension of the telescopic covering during transport can lead to serious hand injuries. In addition, the minimum length of a scaffold telescopic coating is always relatively long due to technical reasons.

The installation of a frontal Konsolenverbreiterung is limited by the available dimensions of console widths to certain dimensions. Since wall-mounted brackets often have to be installed, the mounting space for the end brackets is in many cases not available at all.

The installation of slots closed with wooden or steel planks involves the problem that the slot can only be closed after the scaffolding frame has been slipped over. This means that the scaffold installer must climb freely over the gap or provisionally cover the spot. Since such a temporary cover is usually not secured against lifting and moving, there is a risk that the unsecured cover slips away. The attachment of the laid planks also causes problems because the lower cross sections of the scaffolding frames form a height offset edge to the floor level, which triggers a folding movement when loading the planks, which must be compensated by a further wooden base. Wooden planks are next to the known problems of only limited weathering stability, low slip resistance, especially in the rain, and a flammability easily connected.

The crossover of the framework fields is also not an optimal solution, since in this case the passage height is greatly reduced. Often a crossover of the framework fields is not even possible because, for example, outside console extensions would have to be penetrated by the mutual scaffolding.

To solve the problems outlined above, for example, suggests DE 20 2012 101 000 U1 an overlap arrangement of at least two runways for a scaffolding before. The overlapping arrangement comprises at least a first metal rail and a second metal rail, each of which has a metal sheet running surface provided with substantially round through holes. At least a portion of the through holes is bounded in each case by an inner diameter spanning, bulging or bulging, circumferential hole edge. The second gang plank is arranged above the first plank and overlaps the first plank in such a way that the running surface of the upper, second plank at least partially overlaps the running surface of the lower, first plank. The first gangplank and the second gangplate are fastened by means of a fastening bolt against displacement relative to each other in a direction parallel to their running surfaces sliding plane and secured against lifting each other releasably secured to each other. The fastening bolt has a fastening head and a bolt shank which is penetrated both through a through hole of the upper, second gangplate and through a through hole of the lower, first plank protrudes, wherein the fastening head engages over a hole edge of that through hole of the upper, second plank and bears against this hole edge through which the bolt shank of the fastening bolt protrudes. The in the DE 20 2012 101 000 U1 described overlapping arrangement in which two runways overlapping arranged one above the other and secured with fastening bolts against each other, is associated with the disadvantage that results in a height offset to the edges of the above-laid gangplank with respect to the underlying plank runway height. This height offset arises at all edges of the upper gangplank, which leads to a corresponding trip hazard and thus accident risk. In addition, the upper gangplate must be secured on both sides of the bridged gap by means of the fastening bolts against slipping, which is associated with an increased workload.

A length compensation arrangement with four scaffolding frames, two scaffolding floors and a length compensation element, according to the preamble of claim 1, is known from JP H07 34674 A known. The length compensation element bridges a gap formed between the two spaced-apart scaffolding floors.

The JP 2008 050825 A discloses a length compensation element with an end-side end profile, two lateral end profiles and a covering connecting the two lateral end profiles and the end-side end profile covering. The front end profile is equipped with attachment claws for connection to a scaffolding frame. The length compensation element is arranged overlapping in a portion of its covering with a scaffold floor.

Despite the approaches known from the prior art, there is still a need for arrangements that can be bridged gaps between individual scaffold floors of a scaffolding that can be installed easily and quickly and ensure high security for the construction workers using the scaffolding.

Presentation of the invention

This is where the invention starts. It is an arrangement for bridging gaps between each scaffold floors of a scaffolding are provided, which can be easily and quickly installed and ensures high security for the scaffolding construction workers using. This object is achieved by the length compensation arrangement according to independent claim 1. Further Advantageous aspects, details and embodiments of the invention will become apparent from the dependent claims, the description and the drawings.

The present invention provides a length compensation assembly comprising at least first, second, third and fourth scaffolding frames, a first scaffold floor, a second scaffold floor, a length compensation element, a railing element and a scaffold coupling. The first scaffolding floor is fixed, but releasably connected to the first and the second scaffolding frame and arranged between these scaffolding frames. The second scaffolding floor is fixed, but releasably connected to the third and the fourth scaffolding frame and arranged between these scaffolding frames. The first scaffolding floor is arranged in the vertical direction above the second scaffolding floor. The length compensation element bridges a gap formed between the two spaced-apart scaffold floors, wherein the length compensation element has a first end profile assigned to the first stand bottom, a second end profile assigned to the second stand bottom and two lateral end profiles connecting the two end profile sections , The two front end profiles and the two side end profiles are connected by a covering, wherein the first end profile is equipped with at least two Einhängekrallen or two Einhängedurchbrechungen for fixed but detachable connection to the second scaffolding frame, and the second end profile in section perpendicular to a plane formed by the pad is triangular in shape. The length compensation element is arranged in the region of its second end-side end profile and at least in one, the second end-side end profile adjacent portion of its covering overlapping with the second framework floor. The railing element has at least one upper railing rail, wherein the upper railing rail is equipped with at least one fastening element for attachment to the second scaffolding frame. The railing element additionally has a substantially U-shaped railing bar, wherein the two ends of the U-shaped railing bar are connected to each other by the upper railing. The upper railing is tubular and has an outer diameter between 45 mm and 55 mm. The scaffolding coupling firmly connects the upper railing of the handrail, but detachably with the third scaffolding frame.

The term "scaffolding frames" in the context of the present invention not only the usual, known in the art scaffolding frames understood, but also corresponding constructs of two by cross struts (bars, U-bolt) interconnected modular scaffolding handles. So if in the present text and in particular in the claims of a "Scaffolding" the speech, so are not only Standard Gerüstrahmen meant, but all of two vertical pipes and connecting these tubes cross struts composite Gerüstrahmenteile.

The length compensation element as a central element of the length compensation arrangement according to the invention is equipped with the standard with standard scaffolding Einhängekrallen or Einhängedurchbrechungen. As a result, the length compensation element, just like a standard scaffold floor, can be brought into engagement with the U-rails or connecting pins provided in conventional standard scaffolding frames and can therefore be installed quickly and easily during scaffolding construction.

The length compensation element is thus connected with its attached to the first end-side end profile connecting elements with a scaffolding frame. With its second end-side end profile and with a partial section of its covering which is adjacent to this second end-side end profile, the length-compensating element is arranged in an overlapping manner with the second framework floor, so it rests on this framework floor. Overall, this results in a very simple installation of the length compensation element in a framework. The length compensation element is simply hung on one side of the gap in the scaffolding frame and placed on the other side of the gap on the scaffold floor.

By hanging in the scaffolding jamb automatically level compensation between the adjacent scaffold floor and the lining of the length compensation element, whereby a risk of tripping and the associated risk of accidents are significantly reduced. The same applies to the special design of the second frontal end profile, which has a triangular shape in section perpendicular to a plane formed by the covering. As a result, the risk of tripping in the region of the second scaffold floor associated, frontal end profile is also significantly reduced.

In principle, the first and the second framework floor are at least slightly offset from one another in the vertical direction, wherein the first framework floor is arranged above the second framework floor. Would the first and the second scaffolding floor are located in a common scaffolding floor level, an oblique arrangement of the length compensation element would result, as this yes connected with its attached to the first end profile end fasteners with a scaffolding and placed on the opposite side of the gap on the scaffold floor becomes. Therefore, in this case, the length compensation element would have to overcome a height difference corresponding to its own height H, which would lead to an increased risk of tripping, in particular in the region of the second frontal end profile.

If the first and the second scaffolding floor are arranged offset from one another in the vertical direction and in particular substantially offset by the height H of the length compensation element, the first scaffold floor being arranged above the second scaffold floor, this results in a further advantage. If in fact the first scaffold floor is arranged essentially around the height H of the length compensating element in the vertical direction above the second scaffold floor, then the length compensating element extends in a common plane after being connected to the scaffolding frame with the first scaffold floor. On the opposite side, the length compensation element lies on the second framework floor and overlaps with it in a sufficient area. Due to the special design of the second front-side end profile, which has a triangular shape in section perpendicular to a plane formed by the covering, there is virtually no risk of tripping in the area of the second framework floor either.

In the context of all embodiments of the present invention, the covering of the length compensation element is preferably a profiled covering. By using a profiled covering, the risk of slipping can be significantly reduced. In addition, a profiled covering fulfills all the standards of system scaffold coverings in terms of skid resistance and load-bearing capacity.

According to a preferred embodiment, the first and the second framework floor are arranged substantially at right angles to one another. In a substantially rectangular arrangement of the two scaffold floor to each other results in a uniform over the entire width of the length compensation element overlap with the second scaffold floor. In principle, the scaffolding floors can be arranged at almost any angle to one another, wherein the boundary areas of the arrangement relative to each other must, of course, make technical sense to the skilled person. If the two scaffolding floors and thus also the two sections of the entire scaffolding, between which a gap results, are arranged at an angle deviating from 90 ° relative to one another, the functionality of the present invention nevertheless remains intact. It only has to be ensured that the gap bridging longitudinal extent of the length compensation element is chosen sufficiently large, so that even in the region of least overlap with the second scaffold floor this overlap is still safe, stable and sufficiently large pronounced. For a person skilled in the selection of a suitably dimensioned length compensation element is no problem.

Sufficient safety results from an extension of the overlapping area in the direction of the expansion of the gap, ie in the direction of the first to second scaffolding floor, of at least 100 mm. At most, the length compensation element over the entire extent of the second scaffold floor in the gap direction with this overlap, so to stop against the opposite toe board.

The relatively large bandwidth of expansions of the resulting scaffolding gaps is taken into account that the length compensation element in different sized lateral extent, that is sized differently sized in the direction of the first end-side end profile to the second end-side end profile is made. The individual lengths are staggered so that a suitably dimensioned length compensation element is available for every imaginable gap up to almost the length of a standard scaffold floor.

The widths of the length compensation element are advantageously adapted to the usual standard frameworks widths and correspond substantially to the usual widths of the scaffold floors. The width, as usual in scaffolding, the width of the scaffolding, but it can also be only half or a third of the width of a scaffolding frame. Accordingly, one, two or three length compensation elements are then used to bridge a gap. As a result, it can be ensured in each case that the width of the accessible area of the length compensation element or elements corresponds to the width of the accessible area of the framework floors. Due to the widths mentioned, essentially all gaps which occur in known framework widths as well as in all conceivable console combinations and surface structures can be bridged.

According to a further preferred embodiment, the two end-side end profiles run substantially parallel to one another, the two lateral end profiles run essentially parallel to one another and the covering which connects the end-side end profiles and the side end profiles is formed substantially rectangular. This results in a top view rectangular standard shape for the length compensation element, which ensures easy handling, space-saving storage and cost-effective production. In particular, when using the rectangular length compensation element to bridge a gap between substantially at right angles or in a slightly deviating from 90 ° angle relative to each other arranged scaffolding sections results in a secure bridging the gap with a uniform overlap region and thus a secure support of the length compensation element on the second framework floor.

Particularly preferably, the length compensation element consists of metal and the covering is formed of a metal sheet. This embodiment provides a stable, difficult to deform element that can be easily manufactured at the same time. To further improve the stability, the length compensation element can be designed with multiple creases in the region of its lateral end profiles. Particularly preferably, the covering is formed from a profiled metal sheet.

To reduce the risk of slipping when walking the length compensation element, the metal sheet according to a further preferred embodiment, a plurality of substantially round through holes, wherein at least a portion of the through holes each bounded by an inner diameter spanning, beaded, circumferential hole edge. The metal sheet forming the covering has no through holes, no elevations and no depressions in its regions adjacent to the end-side end profiles. The lack of through holes, elevations and depressions ensures a secure stacking. This can be further improved, even if no such through holes, elevations or depressions are provided in the regions of the covering adjacent to the lateral end profiles.

Particularly preferably, the hole diameter of the through holes is about 14 mm, so that conventional bolts or special screws can be used to secure the length compensation element in the overlapping with the adjacent scaffold floor section. Thus, it can be quite generally and particularly advantageous to be provided with the described embodiment, an additional fastener with which the length compensation element and the second framework floor are fastened together and so slipping or lifting of the length compensation element is additionally reliably avoided. Such a backup is required especially in the case of high wind loads. In the case of through holes with a diameter of about 14 mm, this attachment is particularly easy. Another additional safeguard against lifting the length compensation element can be done by the lower rectangular tube profiles of the plugged scaffolding frames or by modular scaffolding Aushebesicherungen.

Advantageously, the length compensation element has a height H of 40 mm to a maximum of 50 mm, particularly preferably a height H of about 45 mm. The heights mentioned correspond to the heights of conventional wooden scaffolding planks or steel scaffolding planks. In the vertical direction, the arrangement of the Einhängekrallen or Einhängelochung corresponds to the first end-side end profile of the length compensation arrangement of the arrangement of Einhängekrallen or Einhängelochung the system frame coverings. Therefore, after hanging, for example, the Einhängekrallen in the example U-shaped rail of the scaffolding frame closes the surface of the covering flush with the surface of the adjacent From scaffolding floor. Thus, any risk of tripping is excluded in the area of the first scaffold floor associated, frontal end profile.

As already mentioned, the first and the second scaffold floor are arranged offset from one another in the vertical direction and are particularly preferably offset substantially from one another by the height H of the length compensation element, wherein the first scaffold floor is arranged above the second scaffold floor. This results in the already mentioned advantages, namely an arrangement of the length compensation element and the first scaffold floor in a common plane. On the opposite side, the length compensation element lies on the second framework floor and overlaps with it in a sufficient area. In the region of the second front-side end profile, only a height difference corresponding to the height H of the length-compensating element must be overcome relative to the second framework bottom, which already leads to a reduced risk of tripping, which is further reduced by the special design of the second end-side end profile.

The distance between the two scaffolding floors in the vertical direction is ideally adapted to the height H of the length compensation element. If the length compensation element has a height H of 40 mm, then in the context of the present invention it is particularly preferred if the first framework floor is arranged in the vertical direction by approximately 40 mm above the second framework floor. If the height of the length compensation element is 50 mm, then it is correspondingly preferred if the first framework floor is arranged in the vertical direction by approximately 50 mm above the second framework floor.

According to further, particularly preferred embodiments, the first scaffold floor is arranged in the vertical direction above the second scaffold floor, wherein the distance between the two scaffold floors in the vertical direction between 30 mm and 150 mm, more preferably between 35 mm and 100 mm, particularly preferably between 40 mm and 75 mm and most preferably between 40 mm and 50 mm. Ideally, the distance between the first and the second framework floor in the vertical direction is approximately 45 mm corresponding to the height H of the length compensation element.

Particularly preferably, the hypotenuse of the triangular sectional area of the second end-side end profile with the plane formed by the covering includes an angle α between 120 ° and 150 °, preferably an angle of approximately 135 °. Due to the angular ranges mentioned, the second frontal end profile, starting from the plane of the covering, up to the surface of the scaffold floor arranged underneath, becomes designed meaningful beveled, so that a risk of tripping in the region of the second end-side end profile can be further reduced.

According to the invention, the length compensation arrangement additionally has a railing element, wherein the railing element has at least one upper railing, the upper railing rail is equipped with at least one fastening element for attachment to the second scaffolding frame. Although bridging the gap between two scaffolding floors achieved by the length compensation element ensures problem-free pedestrian crossing, it is still associated with an increased risk of accidents since there is no lateral securing. This fuse is provided in the form of a railing element with a railing upper belt. By fastening element a simple attachment to the second scaffolding frame is possible.

According to the invention, the railing element in addition to a substantially U-shaped railing rail, wherein the two ends of the U-shaped railing rail are connected to each other by the upper railing. This contributes to a further increased safety, since the bridge of the U-shaped railing bracket represents an additional delimitation from the outer framework and thus significantly reduces the risk of falling.

The fastening element for fastening to the second scaffolding frame is preferably a half-coupling connected fixedly to the upper railing of the banister, in particular welded to the upper railing of the upper frame. A half-coupler is a standard component known from scaffolding, which, with easy availability, ensures a simple, secure and fast attachment of the railing upper belt to the second scaffolding frame.

According to the upper railing railing is tubular and has an outer diameter between 45 mm and 55 mm. Preferably, the outer diameter between 47 mm and 50 mm, more preferably, the outer diameter is about 48.3 mm. The outer diameter of around 48.3 mm corresponds exactly to the outer diameter of the tubes of a standard jawbelt. This means that all additional components, connecting elements and couplings used for scaffolding frames can also be used in connection with the handrail bar and in particular in connection with the upper handrail.

This advantage comes especially to bear, since the length compensation arrangement according to the invention additionally comprises a scaffold coupling, wherein the scaffold coupling firmly, but releasably connects the railing upper strap with the third scaffolding frame. Also one Scaffolding coupling is a standard component known from scaffolding, which ensures easy, safe and quick attachment of the railing upper belt to the third scaffolding frame with easy availability.

By such, fixedly attached to the second scaffolding frame and at the same time firmly attached to the third scaffolding frame railing element another scaffolding connection is achieved, whereby a tipping or slipping apart of the two framework sections is reliably prevented.

System boards are preferably used as a board, which are installed offset to the existing on-board boards. Alternatively, conventional formwork boards can be clamped with toe board bolt couplings. The leveling pads are simply hung during installation like a normal scaffold deck.

As already mentioned in connection with the length compensation element, the gaps arising during scaffolding construction can also be taken into account with regard to the railing element by virtue of the fact that the railing element has a different lateral extent, ie a different length of upper railing and correspondingly adapted U-shape. shaped trained railing bracket is formed. The individual lengths and sizes are staggered in such a way that a suitably dimensioned railing bracket is available for every imaginable gap up to almost the length of a standard scaffold floor. Together with a correspondingly sized length compensation element, this results in a modular system that can be easily and inexpensively manufactured and installed easily and quickly, which can bridge gaps of different sizes over a wide range and which provides an extremely high level of security for the construction workers.

Preferably, the substantially U-shaped railing bracket is tubular and has an outer diameter between 30 mm and 40 mm, preferably between 32 mm and 35 mm, particularly preferably an outer diameter of about 33.7 mm, on. The sizes mentioned allow a cost-effective production while maintaining sufficient stability.

Preferably, the railing element, measured from the lower edge of the web of the substantially U-shaped railing rail to the upper edge of the railing upper belt, a height between 50 cm and 70 cm, preferably a height of 59 cm on. The heights mentioned cover the lateral scaffold gap particularly advantageously completely as far as possible.

Further developments, advantages and applications of the invention will become apparent from the following description of exemplary embodiments and from the figures. In this case, all described and / or illustrated features alone or in any combination are fundamentally the subject of the invention, regardless of their summary in the claims or their dependency.

Brief description of the drawings

Fig. 1

in schematischer Darstellung eine perspektivische Ansicht eines Modulgerüstsystems mit Längenausgleichselement als einen Bestandteil einer erfindungsgemäßen Längenausgleichsanordnung;

Fig. 2

in schematischer Darstellung einen vertikalen Schnitt durch ein Längenausgleichselement;

Fig. 3

in schematischer Darstellung eine Draufsicht auf eine erfindungsgemäße Längenausgleichsanordnung;

Fig. 4A

in schematischer Darstellung eine Seitenansicht eines Geländerelements;

Fig. 4B

in schematischer Darstellung eine Draufsicht auf das Geländerelements der Fig. 4;

Fig. 5

in schematischer Darstellung eine Seitenansicht einer erfindungsgemäßen Längenausgleichsanordnung am Beispiel eines Rahmengerüstsystems.

The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. Show it

Fig. 1

a schematic representation of a perspective view of a modular scaffold system with length compensation element as a part of a length compensation arrangement according to the invention;

Fig. 2

in a schematic representation of a vertical section through a length compensation element;

Fig. 3

in a schematic representation of a plan view of a length compensation arrangement according to the invention;

Fig. 4A

a schematic representation of a side view of a railing element;

Fig. 4B

in a schematic representation of a plan view of the railing element of Fig. 4 ;

Fig. 5

in a schematic representation of a side view of a length compensation assembly according to the invention using the example of a frame scaffold system.

Ways to carry out the invention

The FIG. 1 shows a schematic representation of a perspective view of a modular scaffolding system with length compensation element as part of a length compensation arrangement according to the invention. A first scaffolding frame 1, a second scaffolding frame 2, a third scaffolding frame 3 and a fourth scaffolding frame 4 as well as a plurality of scaffolding floors, of which a first scaffolding floor is shown, are shown are denoted by the reference numeral 5 and a second framework floor by the reference numeral 6. The first scaffold floor 5 is fixed, but releasably connected to the first 1 and the second 2 scaffolding frames and arranged between these scaffolding frames 1, 2. The second framework floor 6 is fixed, but releasably connected to the third 3 and the fourth 4 scaffolding and between these scaffolding frames 3, 4 arranged.

The first scaffold floor 5 and the second scaffold floor 6 are arranged substantially at right angles to each other. In vertical height, the first scaffold floor 5 and the second scaffold floor 6 are approximately at the height H (see FIG. 2 ) of the length compensation element 7 offset from each other. The length compensation element 7 is located with the first scaffold floor 5 in a plane and rests on the second scaffolding floor 6.

The length compensation element 7 bridges a gap formed between the two spaced apart scaffolding floors 5, 6. The length compensation element 7 has a first, the first scaffold floor 5 associated, end-side end profile 8, a second, the second scaffold floor 6 associated, end-side end profile 9 and two, the two front end profiles 8, 9 connecting, lateral end profiles 10, 11. The two end-side end profiles 8, 9 and the two lateral end profiles 10, 11 are connected to each other by a profiled lining 12.

From the FIGS. 2 and 3 It can be seen that the first end profile 8 is equipped with two Einhängekrallen 13, 14 for fixed, but releasable connection to the second scaffolding frame 2. The second end-side end profile 9 is formed triangular in section perpendicular to a plane formed by the profiled lining 12 (see FIG. 2 ).

FIG. 1 shows that the length compensation element 7 is arranged in the region of its second end-side end profile 9 and in a, the second end-side end profile 9 adjacent portion of its profiled lining 12 with the second framework floor 6 overlapping.

In the FIG. 1 a situation is shown in which two scaffolding floors are arranged side by side in each scaffolding level. The present invention also provides a solution which is easy to adapt to these conditions. Two length compensation elements 7 are simply arranged next to each other, whereby the gap between the two first framework floors 5 and the two second framework floors 6 is completely covered and bridged.

From the FIGS. 1 and 3 It can be seen that the two end-side end profiles 8, 9 are substantially parallel to each other, that the two lateral end profiles 10, 11 are substantially parallel to each other and that the profiled covering interconnecting the frontal end profiles 8, 9 and the lateral end profiles 10, 11 12 is formed substantially rectangular.

The entire length compensation element 7 is made of metal, wherein the profiled coating 12 is formed of a metal sheet. The metal sheet has a plurality of substantially round through-holes formed in the FIGS. 1 and 3 in their entirety are shown as hatched area. The through holes are each bounded by an inner diameter spanning, beaded, circumferential hole edge. The profiled covering 12 forming sheet metal has in its the frontal end profiles 8, 9 adjacent areas no through holes, no projections and no depressions.

Further details of the length compensation element 7 are in the FIG. 2 shown. The height H of the length compensation element 7 is approximately 45 mm and thus corresponds to the height of wooden scaffolding planks or steel scaffolding planks. After hanging the Einhängekrallen 13, 14 in the U-shaped rail of the scaffolding frame 2, the surface of the profiled lining 12 is flush with the surface of the adjacent scaffolding floor 5 from. Thus, in the area of the first scaffolding floor 5 associated, frontal end profile 8 any risk of tripping is excluded.

In the area of the second scaffold floor 6 associated, frontal end profile 9, the length compensation element 7 rests on the second scaffold floor 6, resulting in a step-like height offset would result. How out FIG. 2 it can be seen that the frontal end profile 9 is formed chamfered over its entire height H away. In the exemplary embodiment shown, the hypotenuse of the triangular sectional area of the second end-side end profile 9 with the plane formed by the profiled covering 12 encloses an angle α of approximately 135 °. Due to this special design of the end-side end profile 9, the risk of tripping in the region of the second framework floor 6 assigned, frontal end profile 9 is significantly reduced.

The FIG. 3 shows a schematic representation of a length compensation arrangement according to the invention. From the top view Fig. 3 shows that two rectangular length compensation elements adjacent to each bridge a gap between the scaffold floors 5 and 6. The width of the two length compensation elements corresponds approximately to half the width of the scaffold floor 5, whereby in total a running surface of constant width is obtained.

In Fig. 3 also a railing element 15 is shown, which secures the gap between the framework floors 5 and 6 laterally. This railing element 15 is shown in detail in the FIGS. 4A and 4B shown in side view and in plan view.

The railing element 15 has a railing upper flange 16, which is equipped with a fastening element 17 for attachment to the second scaffolding frame. By the fastening element 17 a simple attachment to the second scaffolding frame 2 is possible. The fastening element 17 is a half-coupling firmly welded to the upper railing of the upper rail.

The railing element 15 also has a U-shaped railing bracket 18, wherein the two ends of the U-shaped railing bracket 18 are interconnected by the upper rail 16. The web of the U-shaped railing bracket 18 provides an additional demarcation to the scaffold outer space and significantly reduces the risk of falling.

The upper rail 16 is tubular and has an outer diameter of about 48.3 mm, on. This outer diameter corresponds exactly to the outer diameter of the tubes of a standard framework, which is why another, in the Fig. 5 shown connecting element can be easily used together with the railing bracket and in particular together with the railing upper belt. The connecting element is a scaffold coupling 19, which connects the railing upper belt 16 firmly but detachably with the third scaffolding frame 3.

The FIG. 5 shows a schematic representation of a length compensation arrangement according to the invention. Through the in Fig. 5 shown, fixed to the second scaffolding frame 2 and at the same time firmly attached to the third scaffolding frame 3 railing element 15 a further scaffold connection is achieved, whereby a tipping apart or slipping of the two framework sections is reliably prevented.

Like also out Fig. 5 can be seen, can be bridged in a flexible manner by the length compensation element 7 and the railing element 15, a wide range of dimensions of the resulting scaffolding gaps. So it is easily possible that the scaffolding frames 3 and 4 comprising scaffolding section, if necessary, an additional piece of the scaffolding frames 2 comprehensive scaffolding section away. For this purpose, only the scaffold coupling 19 must be solved. The length compensation element 7 rests on the scaffold floor 6 only, which is why, when increasing the gap, only care must be taken that the overlapping area of the length compensation element 7 and scaffold floor 6 is sufficiently pronounced. After moving away only the scaffold coupling 19 must be tightened again.

In the illustrated embodiment, the railing bracket 18 is tubular and has an outer diameter of about 33.7 mm, on. The railing element 15 has a height of 59 cm, measured from the lower edge of the web of the substantially U-shaped railing bracket 18 up to the upper edge of the railing upper belt 16.

Railing element and length compensation element represent a modular system that can be easily and inexpensively manufactured and easily and quickly installed, which can bridge gaps of different sizes over a wide range and provides an extremely high level of safety for the construction workers.

LIST OF REFERENCE NUMBERS

1

first scaffolding

2

second scaffolding

3

third scaffolding

4

fourth scaffolding

5

first scaffolding floor

6

second scaffolding floor

7

Length compensation element

8th

first frontal end profile

9

second frontal end profile

10, 11

lateral end profiles

12

profiled covering of the length compensation element

13, 14

Einhängekrallen

15

railing element

16

Geländerobergurt

17

Fastening element, half-coupling

18

railing bracket

19

scaffold coupling

H

Height of the length compensation element

α

Angle between the hypotenuse of the triangular section of the second end-side end profile with the plane formed by the profiled lining

Claims (11)

1. A length adjustment arrangement comprising

   - at least a first (1), a second (2), a third (3) and a fourth (4) scaffolding frame,

   - a first scaffolding floor (5),

   - a second scaffolding floor (6),

   - a length adjustment element (7),

   - a guardrail element (15) and

   - a scaffolding coupling (19),

   wherein the first scaffolding floor (5) is fixedly, but detachably, connected to the first (1) and the second (2) scaffolding frames, and is arranged between these scaffolding frames (1, 2),
   wherein the second scaffolding floor (6) is fixedly, but detachably, connected to the third (3) and the fourth (4) scaffolding frames, and is arranged between these scaffolding frames (3, 4),
   wherein the first scaffolding floor (5) is arranged in the vertical direction above the second scaffolding floor (6),
   wherein the length adjustment element (7) bridges a gap formed between the two scaffolding floors (5, 6) that are spaced apart from one another,
   characterised in that,
   the length adjustment element (7) has a first end-face closure profile (8) assigned to the first scaffolding floor (5), a second end-face closure profile (9) assigned to the second scaffolding floor (6), and two lateral closure profiles (10, 11) connecting the two end-face closure profiles (8, 9),
   wherein the two end-face closure profiles (8, 9) and the two lateral closure profiles (10, 11) are connected to each other by a surface (12),
   wherein the first end-face closure profile (8) is equipped with at least two mounting claws (13, 14), or two mounting apertures, for a fixed, but detachable, connection to the second scaffolding frame (2),
   wherein the second end-face closure profile (9) is triangular in design in the cross-section at right angles to a plane formed by the surface (12),
   wherein the length adjustment element (7) is arranged in the region of its second end-face closure profile (9), and at least in a subsection of its surface (12) adjacent to the second end-face closure profile (9), so as to overlap with the second scaffolding floor (6),
   wherein the guardrail element (15) has at least one upper guardrail strap (16),
   wherein the upper guardrail strap (16) is fitted with at least one attachment element (17) for attachment to the second scaffolding frame (2),
   wherein the guardrail element (15) further comprises a guardrail bracket (18), essentially U-shaped in design,
   wherein the two ends of the guardrail bracket (18), U-shaped in design, are connected to one another by the upper guardrail strap (16),
   wherein the upper guardrail strap (16) is of tubular design and has an outer diameter of between 45 mm and 55 mm, and
   wherein the scaffolding coupling (19) fixedly, but detachably, connects the upper guardrail strap (16) to the third scaffolding frame (3).
2. Length adjustment arrangement according to claim 1, characterised in that, the first (5) and the second (6) scaffolding floors are arranged essentially at right angles to one another.
3. Length adjustment arrangement according to claim 1 or 2, characterised in that, the two end-face closure profiles (8, 9) run essentially parallel to one another, in that, the two lateral closure profiles (10, 11) run essentially parallel to one another, and in that, the surface (12) connecting the end-face closure profiles (8, 9) and the lateral closure profiles (10, 11) to each other is essentially rectangular in design.
4. Length adjustment arrangement according to one of claims 1 to 3, characterised in that, the length adjustment element (7) consists of metal, and the profiled surface (12) is formed from a metal plate, wherein the metal plate comprises a plurality of essentially round passage holes, wherein at least a proportion of the passage holes are in each case bounded by a circumferential raised edge, which spans an inner diameter, and the metal plate which forms the surface (12) has no passage holes, no elevations, and no depressions, in its regions adjacent to the end-face closure profiles (8, 9).
5. Length adjustment arrangement according to one of claims 1 to 4, characterised in that, the length adjustment element has a height (H) of from 40 mm to a maximum of 50 mm, preferably a height (H) of about 45 mm.
6. Length adjustment arrangement according to one of claims 1 to 5, characterised in that, the first scaffolding floor (5) is arranged in the vertical direction above the second scaffolding floor (6), wherein the distance between the two scaffolding floors in the vertical direction is between 30 mm and 150 mm, preferably between 35 mm and 100 mm, more preferably between 40 mm and 75 mm, particularly preferably between 40 mm and 50 mm, and most particularly preferably about 45 mm.
7. Length adjustment arrangement according to one of claims 1 to 6, characterised in that, the hypotenuse of the triangular cross-sectional surface of the second end-face closure profile (9) includes an angle (α) of between 120° and 150°, preferably an angle of about 135°, with the plane formed by the surface (12).
8. Length adjustment arrangement according to one of claims 1 to 7, characterised in that, the attachment element (17) for attachment to the second scaffolding frame (2) is a half-coupling, which is fixedly connected to the upper guardrail strap (16), in particular is welded to the upper guardrail strap (16).
9. Length adjustment arrangement according to one of claims 1 to 8, characterised in that, the upper guardrail strap (16) has an outer diameter of between 47 mm and 50 mm, preferably an outer diameter of about 48.3 mm.
10. Length adjustment arrangement according to one of claims 1 to 9, characterised in that, the guardrail bracket (18), essentially U-shaped in design, is of tubular form, and has an outer diameter of between 30 mm and 40 mm, preferably of between 32 mm and 35 mm, particularly preferably has an outer diameter of about 33.7 mm.
11. Length adjustment arrangement according to one of claims 1 to 10, characterised in that, the guardrail element (15) has a height of between 50 cm and 70 cm, preferably a height of 59 cm, measured from the lower edge of the web of the guardrail bracket (18), essentially U-shaped in design, to the upper edge of the guardrail top strap (16).

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