EP2096235B1 - Console front-end railing - Google Patents

Abstract

The frame has two vertical connection pins (21) inserted into a complementary connection access (22) at a lower side of a positioning frame (2) or a console front-end railing (1). The recess to a coupling recess (23) is enlarged at the lower side of the frame or the console front-end railing. The coupling recess is arranged at a distance from a large part of an inner surface of the recess to the inserted connection pins. A spacer sleeve (41) is inserted into a formed cavity, and a console (4) is fastened to the sleeve. A horizontal support (3) is fastened as a front head to the frame.

Description

The invention relates to a framework, equipped with a Konsolstirngeländer containing at least two vertically aligned. A frame, between which a support or a strut is attached, and at least one console, which protrudes laterally from the frame, wherein from each adjusting frame at the top at least two vertical connecting pins protrude, each in a complementary thereto a connecting recess on the underside of an overlying another frame or a Konsolstirngeländer are plugged.

Frame scaffolds are a widely used standard in the construction of scaffolding, z. B. on the facade of buildings. As a carrier so-called adjusting frames are used, consisting of two vertical supports, which are connected to each other at the top and bottom by a horizontal bar. Very often, the vertical supports are connected by horizontally oriented pads that can be used as a tread for people working on it. However, scaffolds are also known which serve only as a support, e.g. for the stabilization of collapse-prone buildings where the frames are connected by struts only. As a tread serving requirements are not required.

For each new floor of a scaffold, a further adjusting frame is attached at the top of each frame. The two vertical connecting pins that protrude from the top of each frame serve as a connection. They are each plugged into a complementary connecting recess on the underside of the next higher setting frame. These connecting recesses are used in the bottom row of the adjusting frame as a receptacle for the Feet with which the frames are supported on the earth's surface.

When the desired height of the framework has been reached, the top element on the front sides of the framework is inserted in each case with a console end guardrail. From there, parapet poles are laid to railing supports, which are placed on top of the top row of the frames.

It is a common problem that must be worked from the top of the scaffold on the eaves, but often so far from the wall protrudes that even from the outermost edge of the scaffold directly on the parapet the eaves can not be reached ,

To remedy this problem consoles are known, which are screwed to the respective outwardly facing side of the scaffold and bear a widened outward edition as a tread. From this area then the processing of the eaves or the gutters is possible.

A major disadvantage of these consoles is that they are not integrated into the standardized plug-in system of the frames, but must be attached as an additional component by other methods, eg. B. via pipe couplings. This is indeed a solid and durable connection produced, but only by time-consuming and therefore expensive manual work.

As an alternative describes DE 199 11 503 ( EP 0 943 752 A1 ), Jeck an "extension part", which is placed on top of the frame instead of the top frame and allows a projection.

The key disadvantage of this invention is that numerous special parts are needed, which not only has to be manufactured and financed, but also cause increased expenses in the planning and construction of the scaffolding, so that the time gained in construction due to the additional costs elsewhere is nullified again.

Another task, which is very common in scaffolding, is to fix outriggers to the scaffold. B. carry a pulley for pulling up loads or a protective net or other objects. Often also on the inside of the scaffolding, which points to the scaffolded building, in regular Abeständen connections to. Building required so that the required stability of the scaffolding is absolutely guaranteed. Also for this functionality booms are needed from the scaffolding.

The Utility Model DE 93 05 194.8 , Plettac, describes a boom made of three steel sections, which are welded together to form a right-angled triangle. One steel profile is vertically aligned, the other horizontal and the third joins as diagonal strut the other two profiles. At the upper end of the vertical steel profile, a short support arm is attached, which carries a sleeve. This sleeve is pushed over the upwardly projecting connecting pin, so that the entire boom hangs on it.

The disadvantage is that thus the connecting pin is blocked for further attachments and required at this level further structures otherwise need to be attached with special parts that are no longer system compatible.

Against this background, the invention has the task of developing a framework system in which the insertion of a console, which can also be holder for various accessories, under the widest possible use of standard components and by simple and quick mating is possible.

As a solution, the invention presents a framework in which at the bottom of this further frame or the Konsolstirngeländers a connecting recess is enlarged to a coupling recess which is spaced on the larger part of its inner surface to the inserted therein connecting pin and inserted into the cavity formed thereby an intermediate sleeve is, to which the console is attached or that instead of an intermediate sleeve, a spacer sleeve between the coupling recess and connecting pin can be inserted.

The core idea of the invention is that space is created by the extended coupling recess to insert an intermediate sleeve between the connecting pin on the lower setting frame and the coupling recess on the upper setting frame or on the console end railing, to which the console is fastened with an additional functional element. In the vicinity of the eaves, this additional console carries z. B. the extension of the pads to the outside, from which the gutter of the house can be reached.

Such an outwardly projecting console can also be used on other levels of the framework and for other functions. A significant advantage of the construction according to the invention is that the intermediate sleeve with the attached console can also be omitted without replacement, so that another frame or a Konsolstirngeländer can be plugged as the upper end without having to attach an additional console.

In this case, the Konsolstirngeländer wearing his additional name "console" only in so far right, as it is always possible to insert between the coupling recess of the Konsolstirngeländers and the pin inserted thereon an intermediate sleeve with a console.

In the simplest variant of the next higher setting frame or the Konsolstirngeländer is securely connected via its exact matching connection recess with one of two connecting pins of the underlying setting frame. Therefore, a game between the other connecting pin and the enlarged coupling recess is tolerable.

However, if a resilient connection between the (enlarged) coupling recess and the connecting pin located therein is desired, the invention presents a spacer sleeve which fills the cavity between the inner surface of the coupling recess and the outer surface of the connecting pin. It is conceivable, this spacer z. B. made of a tough but elastic plastic, which allows a low-backlash, yet easily mountable connection. For particularly heavily loaded connections, however, a spacer sleeve made of metal is to be preferred.

In any case, the spacer sleeve should be provided with a handle or a handle member through which it is easy to pull out after use again from the coupling recess. This handle could e.g. protrude from the notch, which is otherwise provided for the connector of the console.

In the simplest case, the adjusting frame as well as the Konsolstirngeländer of metal profiles, preferably pipes. Into one end of the tube is used as a connecting pin e.g. a thinner piece of pipe inserted whose outer diameter corresponds to the inner diameter of the continuous pipe. This piece of pipe is inserted into the other, open end of the next frame or the Konsolstirngeländers. Then the front edges of the two interconnected pipes are superposed on each other and the load of the upper frame is derived via the end faces on the underlying tube of the lower frame.

When the short tube piece used as a connecting pin is resiliently connected to the lower tube partially enclosing it, alternatively or additionally, a pressure surface can be fixed within the upper upper tube serving as a connecting recess are on which the serving as a connecting pin pipe piece is supported.

Such a horizontal pressure surface can also be installed in the coupling recess according to the invention, if the weight is to be derived on the connecting pin. This variant is particularly useful if the compound according to the invention should also be usable without intermediate sleeve or spacer sleeve.

An alternative is the power dissipation via the - visible to the outside - side walls of the coupling recess. As a rule, these side walls can not rest directly on the end face of the lower tube, since this surface is required as a support for the intermediate sleeve. Conceivable are on the outer surface of the lower tube or mounted on the horizontal struts supports.

A constructive alternative is conical shaped connecting pins that engage in conical shaped recesses and wedged therein. An advantage of this alternative is that a very strong connection is formed, which does not loosen in the course of the load, but continues to solidify. The decisive disadvantage, however, is that when dismantling the scaffold reached over a long time wedging can be solved only with great effort.

The most important function of the intermediate sleeve is that it carries the attached console. At least part of their surface must be accessible from the outside. A simple variant of this is that two superimposed positioning frames are supported with parts of their frame and the connecting pin serves only for lateral securing, but does not catch the vertical forces. In this case, the intermediate sleeve can be at a certain length above remain visible in the lower frame, so that in this area the laterally outgoing console can be attached.

In the other cases, in which the supports of the adjusting frame or the Konsolstirngeländers also take over the transfer of vertically acting forces and require a corresponding support surface, the intermediate sleeve is covered by the lateral wall of the coupling recess. This still a connection from the intermediate sleeve to the console is possible, the wall of the coupling recess must be correspondingly notched. This notch must be at least complementary to the profile of the console. Also conceivable is a larger opening up to a partial bevel cut at the end of a support.

The console connected by this notch with the intermediate sleeve can serve as a carrier for the most varied parts and functionalities. Very important is z. B. the already mentioned function of the scaffold projection on reaching the eaves. By simply inserting the intermediate sleeve with the attached console a viable support for the support of the framework is created. Alternatively or additionally, further parapet elements and / or railing supports can be fastened thereto. A console according to the invention can be used as a connecting element to the scaffold object. Or it can be attached to a ladder or elevator.

During night work, the console carries a headlight or other lighting fixture, which can illuminate a larger area thanks to the increased distance to the frame, without having to be continuously displaced.

Other alternatives for the execution of the console are the attachment of a protective net or a partition on the framework. Helpful might also be the possibility of attachment for debris disposal tubes with a large cross section. The console can also serve as a mounting for weather protection surfaces or for noise protection elements or for a splash guard.

In another alternative, another bracket is mounted on a bracket as a holder of a tool that can be pivoted, raised and lowered.

Probably the most widely used are frames that are made of pipes, as a pipe offers a good compromise between load capacity and weight and cost. In this case, it makes sense to make the connecting pin and the coupling recess with a circular cross section. The principle is also applicable to all other known and conceivable profiles. Rectangular, oval or elliptical cross-section tubes are also suitable, as are polygonal tubes.

Also conceivable are adjustable frames made of other materials, such. B. wooden profiles, which are combined with metal tubes as Verbindungsausnehmung and Kupplungsausnehmung. Even bamboo can be used, where - as well as wood - a combination with Verbindungsausnehmungen, coupling recesses and connecting pins made of metal is particularly advantageous.

Also conceivable are coupling recesses which can optionally be combined with different connecting pins. So z. B. an ellipse conceivable as a shape of the interior of a coupling recess, which can be plugged together with both a square and a rectangular connecting pin.

As mentioned, the frame framework system according to the invention can be constructed by default from adjusting frames, which have on the underside only one - accurately fitting - connection recess and a - game-afflicted - coupling recess. This game is inventively eliminated by inserting an intermediate sleeve.

In order to connect the coupling recess stable and resilient with a connecting pin without intermediate sleeve, the invention proposes that the cavity between the coupling recess and connecting pin is bridged by a spacer sleeve. If this is made of metal, so the resulting compound is just as resilient as the adjacent, tight fitting Verbindungsausnehmung.

The structure of a framework according to the invention is divided into three essential steps that can be combined with each other in different numbers. In the first step, at least two adjusting frames are brought into a vertical position and fixed therebetween a support, which corresponds to the previously known structure of scaffolding.

This is repeated until a point of the framework is reached, to which a console is to be attached. Then, a step of the second type is required, in which an intermediate sleeve is attached to an upwardly projecting connecting pin with a console attached thereto.

This second step inevitably entails a third step, namely the placement of a Konsolstirngeländers or another adjusting frame, on the underside of each a connecting recess and a coupling recess are arranged. The connecting recess is attached directly to a connecting pin and the coupling recess on the intermediate sleeve.

These three types of steps apply to frameworks that are constructed as a mixed construction of two types of standardized positioning frames, of which the first type has two identical connection recesses on the underside and the other type of adjustment frame has only one connection recess and the second connection element is a - enlarged - Has coupling recess at the bottom.

For frame scaffold systems, which consist exclusively of positioning frames and console end guardrails, which each have a coupling recess and a connection recess on the underside, the first step is omitted. It is replaced by the attachment of a spacer sleeve in place of an intermediate sleeve at those points of the framework that do not require a bracket-like projection to the side.

The connection principle according to the invention is also suitable for scaffolds which have only on a single end face as the uppermost end a Konsolstirngeländer, which is provided on its underside with a coupling recess. All other elements can then be constructed without a coupling recess from already known standardized positioning frames and standardized brow rails. This variant is advantageous if no further side brackets and / or projections are needed. The principle of the invention is also applicable to scaffolds that do not require railings and / or parapets on their uppermost platform, e.g. B. because the top level are located directly under a eaves or a building cornice, which is not further to edit. In this case, the principle of the invention, namely a setting frame with a coupling recess for receiving an intermediate sleeve with a console, applied only where lateral projections such. B. an attachment of the scaffold on the wall are required.

Figur 1

Schrägbild eines Rahmengerüstes

Figur 2

Konsole, Konsolstirngeländer und Stellrahmen vor und nach dem Zusammenstecken

Figur 3

Distanzhülse, Konsolstirngeländer und Stellrahmen vor und nach dem Zusammenstecken

Figur 4

Verbindung zwischen Konsolstirngeländer, Konsole und Stellrahmen im Detail

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

FIG. 1

Oblique image of a framework

FIG. 2

Console, console front rail and frame before and after mating

FIG. 3

Distance sleeve, console end guard rail and positioning frame before and after mating

FIG. 4

Connection between console front railing, console and control frame in detail

The figures show in detail:

In FIG. 1 the oblique picture of a framework is drawn in front of a house wall. In the example shown, three pieces of adjusting frame 2 are placed one above the other and five pieces of such groups of three are placed along the wall of the house. They bear in four levels of editions 3, which are connected with their narrow sides in each case with a setting frame 2 and serve as treads. Immediately above the ground in the second section from the left a pad is inserted, the wearing a ladder. From there you can reach two more ladders on the top level of the pads. 3

This top level is to the outside, ie to the side remote from the building, expanded with 4 consoles and completed at its two narrow sides, each with a Konsolstirngeländer 1.
In FIG. 1 the naming of the "Konsolstirngeländers" is clear: It is a Stirngeländer that allows the integration of a console 4 at one foot.

In FIG. 2 is drawn as a console 4 and a Konsolstirngeländer 1 are plugged onto a frame 2. This assembly is in FIG. 1 respectively top left and top right.

FIG. 2 is divided into a left and a right half: In the left half of the parts are seen before mating and in the right half after mating. It is shown how an intermediate sleeve 41 with attached console 4 is attached to an adjusting frame 2 first and then a Konsolstirngeländer 1 is attached as a second element.

In the illustrated variant, the adjusting frame 2 corresponds to the previously known state of the art, according to which it has two equally large connecting recesses 22 at its lower edge. By inserting these connecting pins 21 in the connecting recesses of a frame 2 arranged above a plurality of adjusting frames can be interconnected, which is in FIG. 2 however not shown.

• Rechts ist die standardmäßige Verbindungsausnehmung 22 eingebaut; an der linken Seite jedoch stattdessen die erfindungsgemäße Kupplungsausnehmung 23, die gegenüber der standardmäßigen Verbindungsausnehmung einen vergrößerten Innendurchmesser aufweist. Dadurch entsteht beim Zusammenstecken eines standardmäßigen Verbindungsstifts 21 mit einer solchen, erweiterten Kupplungsausnehmung 23 ein Hohlraum zwischen Stift und Ausnehmung, der die Form eines Hohlzylinders hat.

FIG. 2 represents how a control frame 2 a Konsolstirngeländer 1 is placed. The Konsolstirngeländer 1 differs from a frame 2 on the one hand by its lower height, on the other hand and for the invention essential but by the changed training of the left of its two recesses:

• On the right is the standard connection recess 22 installed; on the left side, however, instead the inventive coupling recess 23, which has an enlarged inner diameter compared to the standard connection recess. This results in the mating of a standard connecting pin 21 with such extended coupling recess 23, a cavity between the pin and recess, which has the shape of a hollow cylinder.

An element referred to in geometry as a "hollow cylinder" is also often referred to in mechanical engineering as a "section of a tube" or as a "sleeve". Such an element is the intermediate sleeve 41. It carries on an outer side close to its lower edge of the attached console 4, which protrudes laterally from the intermediate sleeve 41.

For mounting, the intermediate sleeve 41 is attached to a connecting pin 21. The inner diameter of the intermediate sleeve 41 is only slightly larger than the outer diameter of the connecting pin 21, so that the intermediate sleeve 41 is attached with little play on the connecting pin 21.

In the next step, the Konsolstirngeländer 1 is attached, with the - in FIG. 2 Bottom right on Konsolstirngeländer drawn - standardized connection recess conforms to the surface of the connecting pin 21 from below the adjusting frame 2. Likewise, the inner surface of the coupling recess 23 is located on the outer surface of the intermediate sleeve 41 at. Since the intermediate sleeve is attachable to the underlying connecting pin 21, it has a larger outer diameter than the connecting pin 21, which is why the inner diameter of the coupling recess 23 must be about the same size and thus larger than the connecting recesses 22 elsewhere in the frame.

In the right half of the FIG. 2 is the setting frame 2 drawn with ready attached console end railing 1 and integrated in the connection point console 4. For completion - as in FIG. 1 shown here still lacks below the console 4, the triangular support, which is usually manufactured and installed according to the prior art as a separate part and is also referred to as "console".

However, it would be conceivable that this triangular support also works together with in FIG. 2 produced and mounted as console 4 arrangement. Therefore, in this drawing as well as in the rest of the text for each horizontally protruding element, which is plugged into the junction between the console end guardrail 1 and 2 or between two frames 2, also the term "console" is used.

In FIG. 3 is - as well as in FIG. 2 - Placing a Konsolstirngeländers 1 shown on a setting frame 2, but here without an intermediate sleeve 41. Instead of the intermediate sleeve 41, a spacer sleeve 5 is inserted so that no clearance between the coupling recess 23 and the connecting pin 21 is formed. Due to the lateral bevel, which is intended for the protrusion of the strut on the console 4, a small piece of the spacer sleeve 5 is visible after assembly.

The advantage of the spacer sleeve 5 is that everywhere a standard Konsolstirngeländer 1 can be used, even where it does not have to be extended to the laterally projecting bracket 4.

In FIG. 4 is the cross section through the junction between a control frame 2, a Konsolstirngeländer 1 and a console 4 drawn: In the cross section of the adjusting frame 2 with the connecting pin 21 fixed therein and the support 3 attached thereto every second line of the hatching line by "dash-dot-dash "marked.

The connecting pin 21 is surrounded on its free side surface by the intermediate sleeve 41, whose cross section is marked by dots. The intermediate sleeve 41 fills the remaining interior of the coupling recess 23 almost completely. The wall of the coupling recess 23 is not marked separately, but hatched as part of the Konsolstirngeländers 1 with solid lines.

Right next to the junction between the support of the console 4 and the intermediate sleeve 41 can be seen that the Konsolstirngeländer is chamfered at its left lower edge to provide a space for the support of the console 4.

In FIG. 4 can be seen that the adjusting frame 2 at the point at which the connecting pin 21 protrudes, a horizontal support surface for the intermediate sleeve 41 offers. The intermediate sleeve 41 in turn has at its upper end edge on a horizontal support surface for the Konsolstirngeländer. In FIG. 4 has the Konsolstirngeländer 1 still a small distance from the spacer sleeve 41, so it is not completely lowered.

After hitting the spacer sleeve 41, the weight of the Konsolstirngeländers 1 derives via the spacer sleeve 41 on the Adjustment frame 2 on. The connecting pin 21 and the wall of the coupling recess 23 carry no loads in the illustrated embodiment, but prevent the Konsolstirngeländer 1 and the intermediate sleeve 41 can slip laterally from the adjusting frame 2.

LIST OF REFERENCE NUMBERS

1

Console end railing, on top of frame 2

2

Adjustable frame, supports edition 3

21

Connecting pins, top of adjusting frame 2, in connection recess 22 can be inserted

22

Connecting recess, at the bottom of adjusting frame 2, receives connecting pin 21

23

Coupling recess, receives intermediate sleeve 41

3

Pad, attached as a tread on 2 frames

4

Console, attached to intermediate sleeve 4

41

Intermediate sleeve, between connecting pin 21 and connecting recess 22, carries console 4

5

Spacer sleeve, between coupling recess 23 and connecting pin 21 can be inserted

Claims (9)

1. Frame scaffold, which can be equipped with a bracket end rail (1), comprising

   - at least two vertically oriented post frames (2), between which a support (3) or a strut is fastened, and

   - at least one bracket (4), which projects laterally from the frame scaffold,

   wherein, from each post frame (2), at least two vertical connecting pins (21) project, which, in each case, are inserted into a complementary connecting recess (22) on the underside of a further post frame (2), which is located thereabove, or of a bracket post frame (1), characterised in that

   - on the underside of this further post frame (2) or of the bracket end rail (1), at least one connecting recess (22) is enlarged to form a coupling recess (23), which, on the larger portion of its inner surface, is spaced from the connecting pin (21) that is plugged therein, and

   - in the space formed thereby, an intermediate sleeve (41) is plugged, on which the bracket (4) is fastened or

   - in that, instead of an intermediate sleeve (41), a spacer sleeve (5) can be plugged between the coupling recess (23) and connecting pin (21).
2. Frame scaffold according to the preceding claim (1), characterized in that a horizontal support (3) is fixed on at least two post frames (2) as tread surface.
3. Frame scaffold according to one of the preceding claims, characterised in that the end face of each lateral wall of the connecting recess (22) rests on a contact surface, which is complementary thereto, of each post frame (2).
4. Frame scaffold according to one of the preceding claims, characterised in that the end face of each connecting pin (21) rests on a complementary pressure surface of each connecting recess (22) or of each coupling recess (23).
5. Frame scaffold according to one of the preceding claims, characterised in that the connecting pins (21) and their complementary connecting recesses (22) are shaped as truncated cones.
6. Frame scaffold according to one of the preceding claims, characterised in that the lateral wall of the coupling recess (23) is notched and the bracket (4) engages in said notch..
7. Frame scaffold according to one of the preceding claims, characterised in that the bracket (4) is a carrier for

   - a support (3) and/or

   - a railing and/or

   - a handrail post and/or

   - a connecting element to the object around which scaffolding is erected and/or

   - a ladder and/or

   - an elevator and/or

   - a lighting element and/or

   - a protective net and/or

   - a partition wall and/or

   - a signboard and/or

   - a debris chute and/or

   - a tool holder and/or

   - a weather-guard face and/or

   - noise protection
8. Frame scaffold according to one of the preceding claims, characterised in that the profile of the coupling recess (23) is a circle or a rectangle or an oval or an ellipse that contacts at least three points of the inserted connecting pin (21).
9. Method for constructing a frame scaffold according to one of the preceding claims, characterised in that

   - in the first step, at least two post frames (2) are brought to a vertical position and a support (3) or a strut is fastened therebetween, and

   - In the second step, an intermediate sleeve (41) with a bracket (4) fastened thereon is plugged onto at least one connecting pin (21)

   - in the third step, a bracket end rail (1) or a further post frame (2) is plugged on, the large coupling recess (23) of the bracket end rail (1), or of the post frame (2) as appropriate, being put over the intermediate sleeve (41), and the small connecting recess (22) of the bracket end rail (1), or of the post frame (2) as appropriate, is plugged over the connecting pin (21).

Images