EP2578772B1 - Foldable scaffold floor extension - Google Patents

Description

The invention relates to a scaffold on the outer wall of a building with the features of the preamble of claim 1.

In the current state of the art, it is customary for the completion of exterior walls in structural engineering to erect a framework before the shell of the outer wall, from which the further layers of the outer wall are applied. As a rule, the framework has a distance of about 30 cm from the outer wall in order to fasten or apply facade panels and / or plaster and / or paint layers.

On the background of gradually declining fossil energy reserves, it is currently becoming increasingly important to install thermal insulation layers on the facades as well. These layers can form a thermal insulation composite system (ETICS) typically 25 to 30 cm thick. In order to still have sufficient working space for the surface processing of the outermost ETICS layer after mounting these ETICS layers, an increased distance of the framework from the outer wall is required, which is in the order of 55 cm.

However, it is not permissible to set up the scaffolding with such a large distance from the outset, since the risk of falling objects or persons is then too great. Therefore, it is common to extend the scaffolding floor parts of the framework inward, so that the gap is reduced to the outer wall of the building to about 30 - 35 cm wide.

After the voluminous thermal barrier coatings have been applied in this gap, the scaffolding floor extensions are removed so that a gap of 20-30 cm forms between the now narrower scaffold and the surface of the thermal barrier coating, in which the last layers can be applied to the thermal insulation.

On the current state of the art extensions of the scaffold floors in a variety of variants are known. Often used are console platforms or console beams, the essential feature of which is that they are secured with an additional, triangular support against folding downwards. Although such a triangular support is a robust and sustainable element, but only if all the necessary connections have been accurately engaged and the possibly necessary screwing or jamming have been created with the necessary tightening torque.

So describes the example DE 195 00 438 A1 a "console platform", which could in principle also be attached to the vertical stems of a scaffold, so that it increases the surface of the scaffolding floors. This console platform is characterized by the fact that its triangular console girders are articulated against the scaffold floor extension and engage in their vertical position to the scaffolding floor extension aligned working position in the attachment. As a result, the console is stabilized to the scaffold floor extension in the working position and allows space-saving folding when not in use.

The disadvantage, however, is that the scaffolding floor extension is very complicated and expensive. In operation, it is a further disadvantage that the accurate fit of all necessary connections just before entering the scaffolding floor extension - that is from above - is not controllable, but only from the bottom can be inspected, leaving the work surface and the effort of Descending to the next lower working surface requires.

A much easier to activate scaffolding extension shows the DE 199 26 592 A1 , It consists of two telescopically to slide into each other and also retractable carriers, which are mounted parallel to the bars of the setting frame below a scaffold floor surface. On these telescopes rests a scaffolding extension. By advancing this scaffolding floor extension as a drawer below a table surface of the scaffolding floor is extended.

The disadvantage, however, is that the user is left alone with the question of how he attached the telescopic boom to the vertical stems of the scaffold and also how he secures the boom in the activated, ie extended position.

Another disadvantage is that such a scaffold floor extension is arranged in principle lower by the thickness of the scaffold floor than the middle scaffold floor parts. This always creates a step, which is a potential pitfall trap.

Another problem with scaffolding is that the scaffolding parts are not necessarily firmly connected to the bars and uprights and therefore can be raised by storm or by handling bulky parts, such as carriers, and fall down while doing so. As a result, not only is the necessary footprint missing at the respective location, but this also weakens the structure of the entire scaffold. If dropped, the scaffold floor part itself will be damaged and in turn may cause damage to property and / or personal injury.

To counteract this, describes the DE 26 40 976 a suspension claw, with a scaffold floor part can be placed for example on a bolt. Then the claw not only includes the latch 180 °, but also pivots an additional pawl on the latch, so that an enclosure angle of about 270 ° is reached. This prevents that acting from below forces lift off the respective scaffold floor part.

The disadvantage of this suspension claw, however, is its relatively complicated mechanism with pivot joints, latches and a spring. Another massive disadvantage is that when disassembling for each suspension claw two individual handles are required, namely to release the pawl and at the same time raise the scaffold floor part at this point so that the pawl does not automatically fall back into its closed position. In the case of several suspension claws on a scaffold floor part, such a selective lifting is only possible if the scaffold floor part permits a certain twist in itself.

From the NL 1 019 611 C2 , which is regarded as generic, is a framework, consisting of frames, which in turn are constructed of vertical stems with each paired horizontal bars, known, wherein the horizontal connection of the adjusting frame via horizontally aligned scaffolding parts, the are placed on the frame and thus more precisely on the bars. In addition, on the vertical stems brackets are mounted, which were hung by means of hooks on Auflagerstiften. The slots of the suspension are on the one hand vertically aligned and on the other hand, they find their starting point not in the vertical but in the horizontal edge.

The JP S6246740 U shows a framework with vertical stems, where attached to the horizontal axis pivotable cantilevers and to which the scaffolding floor parts are to be attached. For this purpose, bearing pins are provided, which are not attached to the vertical stem but the cantilever or the attachment device of the cantilever. Stellrahmen, which consist of vertical stems and associated bars are not provided and therefore can not rest scaffolding parts on the setting frame.

The document DE 26 48 543 A1 shows frames of vertical stems, which are connected by horizontally aligned bars. However, it is not the scaffolding parts but the latches on the bearing pins which, instead, catch directly on hooks on the latches. Again, the slots of the suspension are on the one hand vertically aligned and on the other hand, they find their starting point not in the vertical but in the horizontal edge.

Against this background, the invention has the task of developing a connection between scaffolding parts and the framework, which can be easily and inexpensively manufactured and without additional tools and without additional manipulation can be activated and deactivated and holds a scaffolding extension to the scaffolding.

This problem is solved by the features of claim 1.

A key feature of the invention is thus the "hooks", which includes a "Auflagerstift" with its horizontal slot. Such a suspension hook can also be described as a U-shaped component, whose two legs comprise the bearing pin from above and from below. The bearing pin is always aligned horizontally. Likewise, the slot of the Einhängehakens is aligned horizontally in its installed position, so that a downward or upward movement of the Einhängehakens against the Auflagerstift is not possible. This is the basis for its effectiveness as a lifting protection for scaffolding parts.

Another function of the suspension hook is that it can be pushed to the end of the slot on a Auflagerstift, but not further. This effect is based on its use as a load-bearing attachment of scaffolding floor extensions, which protrude laterally beyond the scaffolding and can therefore only be attached to one edge.

The suspension hook according to the invention thus serves in the most general case only to block certain directions of movement - such. when used as a lifting protection for scaffold floor surfaces whose load is otherwise dissipated.

Alternatively, the principle of the suspension hook according to the invention can additionally be used as a mechanical fastening, which then also derives the forces from the overlying loads into the framework. Such a combination of hook and horizontal bearing pin blocked in its installed position vertical movement of a scaffold floor part up and down and blocks a horizontal movement only in a single, certain direction. This configuration is also used for the one-sided attachment of a cantilevered scaffold floor extension. The principle of the invention Einhängehakens is the same as for the suspension of a scaffolding floor extension, it being understood that the suspension hook in the suspension of a scaffolding extension usually has to be much stronger dimensioned than a lift-out without supporting function.

• Die Gerüstbodenerweiterung wird an zwei Einhängehaken befestigt Vorzugsweise sollten diese beiden Einhängehaken möglichst weit voneinander entfernt angeordnet werden. In der Praxis werden die Gerüstbodenerweiterungen zumeist die Form eines länglichen Rechteckes haben, das mit einer Längsseite an ein benachbartes Gerüstbodenteil angrenzt. Dann sollte an den beiden Schmalseiten der Gerüstbodenerweiterung je ein Einhängehaken befestigt werden.

On this basis, the following features are proposed for the use of the suspension hook according to the invention in a scaffolding floor extension:

• The scaffold floor extension is attached to two hooks Preferably, these two hooks should be arranged as far apart as possible. In practice, the scaffolding floor extensions will usually have the shape of an elongated rectangle, which adjoins with a longitudinal side to an adjacent scaffold floor part. Then a hook should be attached to the two narrow sides of the scaffolding floor extension.

In practice, usually two vertical handles are connected via at least two bars to a respective adjusting frame. These adjusting frames are spaced apart from each other and connected by scaffold floor parts. To the outer wall, they have, for example, when attaching thermal barrier coatings a relatively large distance on, which is at least partially bridged by a scaffolding floor extension.

In the vertical handles are often already introduced holes. There are u.a. the so-called. "Fall plug holes", in which the mostly bent wire "drop plug" can be inserted. The invention proposes as an alternative embodiment to use these holes for the insertion of Auflagerstifte.

If the scaffolding floor extensions almost the same length as the distance between adjacent frames, have the hooks welded to the narrow sides of the scaffold floor extensions or otherwise attached only a very small or no distance from the vertical stems. It follows that the Auflagerstifte be charged in the immediate vicinity of their attachment in the vertical stem. As a result, only low bending moments but primarily acting perpendicular to the longitudinal axis shear forces are exerted on the bearing pins. In this case, a metal Auflagerstift is already very viable, even with a relatively small cross-section.

As a principal improvement, the invention proposes a variant in which at the end of the slot an upwardly pointing detent recess is formed, which can receive the cross section of a Auflagerstiftes. As a result, the slot is extended to an L-shaped backdrop. In this variant, the suspension hook and thus also the scaffold floor part attached thereto must perform an L-shaped movement in order to be able to be pushed over the bearing pin. Because no other form of movement is possible, this process can be quickly understood even for low-skilled personnel to set up the scaffold.

Thus, a very significant gain in security against undesired movements of the respective scaffolding part is achieved, as it is e.g. could be triggered by storm gusts or by the impact of other objects, since these loads almost always act in a single direction and therefore would usually cause a linear movement. Even if additional forces act in other directions, this produces continuous movement curves, but not an L-shaped movement with a "discontinuous" course in the transition from one leg of the L to the other.

• In einem ersten Schritt werden zwei Auflagerstifte jeweils an einem Vertikalstiel befestigt, wobei diese beiden Vertikalstiele zueinander benachbart sind.

Another advantage is that - with sufficient play in the slot of the suspension hook or in a circular cross section of the Auflagerstiftes - the hook can be pivoted about this Auflagerstift around. As a result, the following, very simple method for suspending a framework floor extension according to the invention becomes possible:

• In a first step, two bearing pins are each attached to a vertical stem, these two vertical stems are adjacent to each other.

In a second step, the scaffold floor extension is brought into an approximately vertical position and then moved so far until the input openings of the slots in the two hooks are each below a Auflagerstiftes.

Then, in a third step, the scaffolding floor extension is raised until the Auflagerstifte have entered the slots of the hooks and have reached its end.

In a fourth step, the scaffolding extension is then pivoted by about 90 ° until it is aligned horizontally.

If the slot still has an additional detent recess in the suspension hook at its end, then in the last step the scaffold floor extension is additionally lowered in addition to the pivoting movement so far that the bearing pins engage in the detent recess. The movement of the last step is then a combination of a pivoting movement and a lowering.

This movement is possible if the cross section of the Auflagerstiftes in the slot and in the detent recess has sufficient play for it. In the most general case, therefore, the Auflagerstift may have any cross-section, as long as this allows movement within the slot and the final pivoting.

However, the invention prefers that the bearing pin has a cylindrical cross-section. The diameter of this cylindrical cross section should only be slightly smaller than the width of the slot in the hook.

In addition, the invention preferably that the detent recess - if present - is designed as a segment of a hollow cylinder which is shaped to be complementary to the cylindrical bearing pin. In these cases, a side surface of the slot serves as a sliding bearing for the displacement of the suspension hook on the Auflagerstift. Likewise, the inner wall of the detent recess serves as a sliding bearing for pivoting the Einhängehakens relative to the Auflagerstift. It makes sense, in this case, both hollow cylinder segments and the two bearing pins should be arranged on the same central axis. Although in principle a pivoting movement is possible even if the center axes of the two hollow cylinder segments and the two bearing pins are not aligned, but then the wear is significantly higher.

The two above-described hooks a secure suspension of the scaffolding floor extension and their pivoting are possible. For a stable fixation in a certain position, however, a third connection of the framework floor extension to the framework is still missing.

As a "third connection", the invention prefers that at least one scaffold floor extension in its horizontal position by means of one, usually two stop tabs, which are attached to the scaffolding floor extension edge and horizontally outward pointing, on the adjacent vertical stem (1). supported.

Form and attachment of the stop tab is basically arbitrary. This may be a pin with usually any cross section, wherein it is preferred to use a cylinder. It may also be a flat or curved sheet, the z. B. is formed as an angle iron, one leg of which is welded from the outside to the scaffold floor extension. It is crucial that the dimensioning of the stop tab as well as the location of its attachment to the scaffold floor extension is selected so that the stop tab can fulfill its function, d. h, that the stop tab on the scaffolding floor extension on the edge extends outward so far that the adjacent vertical stem in the trajectory of the stop tab then to comes when the scaffold extension is pivoted to its horizontal position. This functionality of the stop tab also determines its position and attachment to the scaffolding floor extension. To achieve a symmetrical force load two stop tabs are usually used, which are attached to the scaffold floor extensions on the opposite end faces in such a way, usually symmetrical to the median plane of the scaffolding floor extension that with the achievement of their horizontal positions both stop tabs simultaneously with the respective vertical stems contact. Of course, the stop tabs are also to be dimensioned so that the particular occurring in the case of the load torques can be supported.

This type of fixation of the pivoted in its horizontal position scaffolding extension is particularly advantageous if the center axis of the support pins and thus the hollow cylinder segment above the scaffold floor extension and in the vicinity of the two stop tabs is usually arranged and the scaffolding floor extension by their mass and possibly loads resting thereon against the adjacent vertical stem is pressed.

A preferred variant is therefore that the suspension hooks according to the invention are each attached to one corner of the framework floor extension and project upwardly beyond the tread surface of the framework floor extension.

In the event that adjacent frames are connected by scaffolding floors, which protrude laterally beyond the vertical stems, it is also possible that the suspension hooks according to the invention emanate from a narrow side of the framework floor extension and on the projecting longitudinal side of the scaffold floor extension far and thereby bridge the distance between the vertical stems with the support pins mounted therein and the side edges of the protruding scaffold floor parts.

It is also conceivable that the scaffold floor parts, which connect adjacent adjusting frames with each other, are narrower than the adjusting frames are wide. In this configuration, the Auflagerstifte for pushing the suspension hook according to the invention can be attached to the bars of the adjusting frames instead of the vertical stems. Then can be used as a "third support point" of the scaffolding floor extension - as described above - still the attached stop tabs.

However, in the case of narrow scaffolding parts and wider setting frame, the bearing pins should still be introduced into the vertical stems, suspension hooks according to the invention must be moved from the corners of the scaffold floor extension to the point on the narrow side of the framework floor extension adjacent to the vertical stems.

If the suspension hooks have to be arranged, for example, in the middle of the narrow sides, then the scaffolding floor extension can oscillate around the bearing pins when loaded. To avoid this, an additional fixation of the scaffold floor extension is required. For this purpose, sliders and / or pins and / or folding hooks and / or latching springs and / or screws and / or clamping connections are proposed as connecting elements. These or other suitable connecting elements can be releasably connected to a vertical stem and / or with a bolt and / or an adjacent scaffold floor part.

As a further refinement of the suspension hook according to the invention, the invention proposes that the slot in the suspension hook is widened in a funnel shape towards its open end. This funnel reduces the required tolerance when sliding a slot over a bearing pin. Then advantageously only a relatively small positioning accuracy is required at the beginning of the movement. At the end of the movement, the funnel-shaped narrowing slot automatically achieves a sufficiently exact positioning.

As a further safeguard against unintentional release, the slot can be temporarily closed by a closure.

So that no additional hand movement for opening the closure is required when sliding a suspension hook on a bearing pin, the invention proposes that the closure is designed as a closing wedge. This closing wedge is to reduce the opening of the slot over its length continuously and be pressed against the force of a spring from the bearing pin to the side. Then, when sliding a suspension hook onto a bearing pin, the closing wedge is continuously pressed further outwards until the entire cross-section of the slot in the suspension hook is released.

When the bearing pin has reached the end of the slot, behind him the closing wedge is pushed back into the slot by the force of the spring, so that a backward movement is no longer possible. The connection between the bearing pin and the suspension hook can only be solved if the striker is unlocked manually.

Figur 1

Ausschnitt eines Gerüstes mit einer Gerüstbodenerweiterung hinter einer gläsernen Außenwand

Figur 2

Einhängehaken als Aufhängung für Gerüstbodenerweiterungen

In the following, further details and features of the invention will be explained in more detail with reference to an example. However, this is not intended to limit the invention, but only to explain. It shows in a schematic representation:

FIG. 1

Section of a scaffolding with a scaffold floor extension behind a glass exterior wall

FIG. 2

Suspension hook as a suspension for scaffolding floor extensions

In FIG. 1 is a rectangular section of the outer wall 3 of a building shown behind a scaffold that has the distance A to the outer wall 3. The outer wall 3 is therefore closest to the viewer. Since the viewing direction of the observer is directed out of the interior of the building and through the outer wall 3 onto the framework, the outer wall 3 is in FIG. 1 glasses so that you can see through them. In the FIG. 1 Visible side of the framework is thus the side facing the outer wall 3 side.

From the framework is also shown only a part. To recognize several vertical stems 1, which are held together by bars 2. Between the two bars 2, a first scaffold floor part 4 is completely visible and adjoining another scaffolding floor part 4 only partially shown. These two scaffold floor parts 4 form the horizontal tread for the staff working on the scaffolding.

At the viewer-facing side edge 41 of the two scaffold floor parts 4 each a scaffold floor extension 7 is set at the same height. These scaffolding extensions 7 have the shape of an elongated rectangle. The front scaffold floor extension 7 is shown completely, so that it is very clear that at each of its two rear corners a hook 5 is attached, which depends on a respective Auflagerstift 6, which is horizontally inserted through a respective vertical handle 1 therethrough. In FIG. 1 It is immediately clear that the scaffolding extension 7 extends the surface of the scaffold floor parts 4 in the direction of the viewer.

If the viewer has adjusted to the fact that the part of the outer wall 3 shown is shown as a glassy and therefore transparent cuboid, which is even closer to the viewer than the framework, then he can understand that the scaffolding extensions 7 the distance A to the building exterior wall. 3 exhibit. This distance A is indicated by an arrow in the lower left corner FIG. 1 located.

For a more detailed explanation of the suspension with the hooks 5 is on the FIG. 2 directed.

In FIG. 2 are as a part of the FIG. 1 the vertical column 1 located there on the right and the end sections of the two scaffolding floor extensions 7 attached thereto are shown. For the sake of clarity, is in FIG. 2 of the really very long scaffolding extensions 7 whose largest part each cut off graphically, so that only the tail is visible in each case. This is very nicely illustrated that both to the viewer indicative side edges 41 of the two scaffold floor parts 4 each a scaffolding extension 7 is set at the same height and rests with their side edges 71 on the side edges 41 of the scaffold floors.

In FIG. 2 It is also clearly evident that the suspension hooks 5 according to the invention are in each case attached to a rear corner of the framework floor extensions 7 in this embodiment.

In the illustrated embodiment, the hooks 5 protrude even in a direction away from the viewer on the rear side edge of the scaffold floor extensions 7, so that in the suspended state, the central axis 61 of the Auflagerstifte 6 in the plane of the rear side edges 71 of the frame floor extension 7.

In the FIG. 2 shown embodiment of the hooks 5 has not only the horizontal slot 51, but also still adjacent to the end of the detent recess 52. This detent recess 52 is executed in the embodiment shown here as a hollow cylinder segment which is complementary to the cylindrical bearing pin 6 dimensioned. Thus, the detent recess 52 serves as a sliding bearing for pivoting the scaffold floor extension 7 about the central axis 61 of the Auflagerstifte 6. The pivotal movement of the two scaffolding floor extensions 7 is in FIG. 2 indicated on the right edge by a double arrow.

When the viewer turns in FIG. 2 imagine this pivotal movement, he can understand very well that while the tread surface of the scaffold floor extension 7 from the illustrated horizontal position is gradually brought into a vertical position and that thus also the also horizontal slot 51 is pivoted in the hook 5 in a vertical position. When this position is reached, a small, horizontally oriented and pointing away from the viewer movement of the scaffold extensions 7 to move the Auflagerstift 6 out of the detent recess 52 and into the slot 51 is sufficient. It is very easy to understand that then the scaffolding extension 7 is pulled by its own weight down and moves in this way the slot 51 from the Auflagerstift 6 down and then the entire scaffolding extension 7 can be removed to the viewer.

In FIG. 2 is very clearly visible that rests in the activated, ie horizontally oriented position of the scaffold floor extension 7 whose side edge 71 on the side edge 41 of the scaffolding floor part 4.

It is clearly recognizable in FIG. 2 Also, that the scaffold extension 7 on the one hand with its hooks 5 on the Auflagerstift 6 depends and rests on the other with its side edge 71 on the side edge 41 of the adjacent scaffolding floor part 4.

In FIG. 2 Therefore, the viewer can imagine very well how a load on the outer edge of the scaffold extension 7 is intercepted, namely the fact that the hooks 5 presses against the Auflagerstift 6 with the rear portion of its detent recess 52 while exerting a force indicative of the viewer. This force is passed on that the side edge 71 of the frame floor extension 7 presses on the complementary side edge 41 of the scaffold floor part 4.

FIG. 2 shows that the suspension hooks 5 according to the invention rests tightly against the vertical column 1, that is so barely exerted on the bearing pin 6 inserted a bending force, but a worst-case shearing force. Against such forces, however, a round steel is relatively very resistant, so that even a small cross-section can already apply a sufficient holding force.

LIST OF REFERENCE NUMBERS

1

Vertical stems of the framework on the outer wall 3

2

Bar of the scaffolding on the outer wall 3

3

Exterior wall of a building

4

Scaffolding floor part in the scaffolding on outer wall 3

41

Front edge of the scaffold floor part 4

5

Hook for scaffold extension 7 and for scaffolding parts 4

51

Slot in hooks 5, horizontal

52

Detent recess at the closed end of the slot 51st

6

Support pin, fits in slot 51 and detent recess 52

61

Center axis of the bearing pins 6

7

Scaffolding extension adjacent to a scaffolding floor part 4

71

Front edge of the scaffold floor extension 7

A

Distance of the scaffolding extension 7 to the outer wall 3

Claims (11)

1. Scaffold on the outer wall (3) of a building, consisting of

   - a plurality of spaced vertical posts (1) which are rigidly connected to one another, in each case in pairs, via horizontally aligned cross-bars (2) to form an assembly frame, and

   - a plurality of horizontal scaffolding parts (4), which lie on the assembly frames and connect them to one another,

   wherein a mounting hook (5) lies on a bearing pin (6), wherein the bearing pins (6) in each case

   - are approximately horizontally oriented and

   - are fastened on a vertical post (1) or on a cross-bar (2) and wherein each mounting hook (5)

   - is approximately plate-shaped and

   - overall, is oriented approximately vertically and approximately perpendicular to a bearing pin (6), characterised in that

   - the mounting hook (5) is rigidly connected to a scaffold deck part (4) and

   - is pierced by a horizontal slit (51),

   - which originates from a vertical edge and

   - which is pushed over a bearing pin (6) in each case and

   - at least two assembly frames as well as the connecting scaffolding deck parts (4) are spaced from the outer wall (3) and

   - a further scaffolding deck part (4) abuts against the wall-side end-face (41) of at least one scaffold deck part (4), as scaffold deck extension (7),

   - - which at least partly bridges the spacing of the assembly frames to the exterior wall (3) and

   - - which is fastened on the scaffolding via two of the aforementioned mounting hooks (5).
2. Scaffolding according to claim 1, characterised in that, on the closed end of the slit (51) an upwardly facing detent indentation (52) is formed, which can receive the cross-section of a bearing pin (6).
3. Scaffold according to claim 1, characterised in that

   - for both mounting hooks (5), the detent indentation (52) is formed

   - as a segment of a hollow cylinder and

   - so as to be complementary to a cylindrical bearing pin (6) and

   - both hollow-cylindrical segments and both bearing pins (6) are oriented on the same centre axis (61).
4. Scaffold according to claim 1 or 3, characterised in that at least one scaffold deck extension (7) is supported in its horizontal position on an adjacent vertical post (1) by means of at least one arrester plate, which is fastened thereon at the edge, is horizontally oriented and is outwardly facing.
5. Scaffold according to claim 4, characterised in that the centre axis (61) of the bearing pins (6) and therefore also the hollow cylindrical segment is arranged

   - above the scaffold deck extension (7) and

   - in the vicinity of the arrester plates and
   the scaffold deck extension (7),

   - by virtue of its mass and

   - by virtue of any loads lying thereon is forced against the adjacent vertical post (1) by means of the arrester plates.
6. Scaffold according to claim 1, characterised in that at least one scaffold deck extension (7) is detachably connected in its horizontal position by means of

   - a slide and/or

   - a pin and/or

   - a folding hook and/or

   - a detent connection and/or

   - a screw and/or

   - a clamp connection and/or

   - a different connecting

   element with

   - a vertical post (1) and/or

   - a cross-bar (2) and/or

   - a scaffolding deck part (4).
7. Scaffold according to one of the preceding claims, characterised in that the slit (51) is extended in a funnel-like manner towards its open end.
8. Scaffold according to one of the preceding claims, characterised in that the slit (51) is temporarily closable by means of a closure.
9. Scaffold according to claim 8, characterised in that the closure can be automatically opened by pushing the mounting hook (5) onto a bearing pin (6), for example by means of a locking key,

   - which continually reduces the opening of the slit (51) along its length and

   - which can be forced sideways by the bearing pin (6) against the force of a spring.
10. Method for fastening a scaffolding deck extension (7) on a scaffold according to one of claims 1 to 9, characterised in that

    - in a first step two bearing pins (6) are fastened on a vertical post (1), in each case, or on a cross bar (2), in each case, and

    - in a second step, a scaffold deck extension (7) is brought into an approximately vertical position and moved until the slit (51) is located in the two mounting hooks (5), in each case beneath a bearing pin (6), and

    - In a third step the scaffold base extension (7) is lifted until the bearing pins (6) have reached the end of the slit (51) in each case and

    - in a fourth step the scaffold deck extension (7) is pivoted through approximately 90° until it is horizontal.
11. Method according to Claim 10, for fastening a scaffolding deck extension (7) on a scaffold according to claim 2,
    characterised in that
    In the fourth step the scaffold base extension (7) is lowered until the bearing pins (6) have engaged in the detent indentations (52) in each case.

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