EP1134331A2 - Set of elements for a scaffold - Google Patents

Abstract

A safety rail fitting for a scaffold frame has the rail (9) secured at each end by special fittings which are clamped into place during assembly of the frame, and which cannot be removed before the frame is dismantled. This prevents unauthorised removal of any safety rails. A simple failsafe fitting has the rail hung over hooks, which are clamped between parallel upright poles (2a, 8b) of the frame.

Description

The invention relates to a set of components for a scaffold that can be assembled into scaffold days Frame parts with cross struts for the arrangement of walkable floors, preferably Planks, for the scaffolding days, with at least one over the edge of a floor as Fall protection can be arranged, and preferably with diagonal struts for static reinforcement of scaffold compartments formed from frame parts and floors.

There are component sets of the aforementioned type for the construction of scaffolding on the Market. Such a set of components comprises frame parts, which essentially each consist of two vertical columns and cross braces connecting these two columns consist. For example, only two cross struts per frame part be provided, namely a cross strut in the lower region and a cross strut in the upper area, with the columns, for example, one each up and down Have protrusion, especially plug connection areas, with the help of the Frame parts, such as tent poles, can be pushed together. The Upper cross struts, for example, have spikes on which walkable planks can be hung so that at the height of an upper cross strut with the help such planks a floor can be formed and with the component set Stacking several frame parts on top of each other builds a scaffold with several scaffolding days can be. In a front view of such a framework, the frame parts would be Represent side panels, each with walkable floors on several floors with each other are connected, the side parts and the floors each form scaffold compartments. For Some of these scaffold compartments can be further stiffened with the help of diagonal braces be reinforced. These diagonal struts would be placed on the side of the scaffold that does not represent the working side of the scaffold and therefore as the back could be addressed. In contrast, the front would be that side, too to work towards. For example, a scaffold could have an open front be arranged on a house facade that is to be processed.

In some countries, accident regulations may provide that the back of the scaffold must be provided with delimiting elements on each scaffolding floor in order to close the railings create that eliminate the risk of falling. Working on a floor of a scaffold People are hindered by the boundary elements when working or handling on the floor by mistake on the side of the scaffold facing away from the working side to fall. The work page itself, as described above, is often direct facing a surface to be machined, through which the scaffold is sufficient on this side closed is.

Conventional delimiting elements mostly consist of rods attached to them their ends have connecting elements, which are essentially an eyelet or an eye have so that the connecting elements on pins or pins by the frame parts protrude, can be attached. Can prevent these pins from sliding down the delimiting elements or their connecting elements with split pins or the like be secured. As a rule, so-called tilting pins are used, i.e. pins on their free end already tiltable or pivotable locking elements are articulated. After attaching the connecting element of the limiting element on a such a pin automatically tilts the locking element and locks the attached one Limiting element thanks to automatic transverse positioning in the manner of a split pin. Through the assembled boundary elements are the people who work on the finished scaffold, adequately secured against falling. However, there is still a risk of falling for the fitters when assembling the scaffolding.

It would therefore be desirable to provide delimiting elements so that they are already at the assembly of the scaffolding can be arranged at a time when the associated Floor is not yet arranged, so that when you first enter the respective Soil by a fitter this fitter already through the previously attached Boundary element is prevented from falling. When building the scaffold should So the limiting element of the next higher floor must be installed before the corresponding one Floor is arranged for the next higher scaffolding days. But this means that the fitter must already fasten the delimiting element of the next higher floor as long as he is still on the floor of the lower scaffolding days. But it is for the fitter not possible to overcome the resulting height difference in order to, in the described way, the connecting elements of the boundary element of the next higher To put scaffolding days on the intended tilt pins because it is from the lower floor not reaching up to these tilting pins, the tilting elements of which he attaches would first have to pivot manually into a threading position.

The invention is based, the arrangement of the delimiting elements in the task Framework of a set of components of the type mentioned with regard to Fall protection, especially during the assembly and construction work of the Scaffolding itself to improve.

According to the invention, this object is achieved in the case of a component set which is distinguished by arranging the limiting element in the structure of the scaffold in a position from which it can only be removed again or only when the scaffolding has been dismantled is.

The delimiting elements in the assembled scaffold can no longer be removed, as long as the scaffold itself is not dismantled, and that is what the boundary elements concerns, in reverse order as described, that is with a dismantling the floors of the higher floor and the boundary elements of the higher floor. This is also not possible with the described technology on the market. For example, there was previously a considerable risk that larger parts would come from the scaffolding should be attached to the surface to be processed, for example from the outside the scaffolding window or the like can be inserted into the house facade to be processed should. In such assembly work, the limiting elements would be the respective ones Scaffold compartments on the outside close in the way, making it easy for a worker to get the idea could come to temporarily remove these limiting elements to the respective scaffold compartment to open. Then there was the considerable risk that after the assembly work forgotten to reinstall the boundary elements and unsecured scaffold compartments remained where the risk of falling was not prevented. In the inventive Scaffolding is therefore prevented from the outset that the limiting elements at all can be removed to open the scaffold compartments as long as the scaffold is set up is.

The delimiting elements are preferably incorporated into the structure of the framework itself Structure involved, so that only by dismantling the scaffolding itself a solution the boundary elements is possible. For example, the respective Letting the columns of the frame parts protrude so far above the upper cross struts, that the plug-in connection areas for attaching the frame parts of the next The floor is about halfway up the scaffold compartment that is being formed. It could then delimiting elements with their eye-shaped connecting elements over the towering spigot of the pillars of the frame parts are pushed before over it the next higher frame parts are attached themselves. The connecting eyes the limiting elements could therefore be like washers in the plug connection areas the frame parts are fixed.

A next development of the invention provides instead, in addition to the frame parts Stand poles to be provided that are parallel and at a short distance to a vertical extending column of a frame part can be arranged such that connecting elements or areas of the at least one delimiting element cannot be detached between one Stand rod and the column of the frame part are added.

The stand rods and the associated columns of the adjacent frame parts thus form at the back of the scaffolding double poles, the two poles being only a small one Have a distance from each other. When assembling the scaffolding, the connecting elements of the delimiting elements introduced into this space so that the delimiting elements can only be removed if the total on the stand at the same height is removed. But this is only with a dismantling of the scaffold possible from top to bottom. However, it is not possible to use stand poles Remove it temporarily in the middle to temporarily remove the delimiting elements.

A next development of the invention provides that the limiting element on each its ends as a connecting element has an eyelet or an eye on a hook can be suspended, which is arranged between the stand rod and the column of the frame part is and is so long that it is the distance between the stand rod and the Completely filled and bridged. This can be used to attach the limiting element the respective eye can be hung over the hook as long as the associated stand rod has not yet been brought into position at the appropriate height. As soon as but the stand rod fixed in its distance to the adjacent column of the frame part is positioned, this distance is completely bridged by the hook, so that the eye of this hook can no longer be removed because it is from the double linkage itself is blocked, which threading and also pivoting the hooked eye prevents and blocks.

The associated hooks are preferably arranged on the stand rods. this has the advantage that the limiting elements of the next higher scaffolding days in a simple manner can already be arranged and positioned before the floors of the next higher ones Scaffolding days can be arranged. This is because of the preferred training also possible from the floor of the lower floor. It can be the eyes of the boundary elements already be applied to the hooks of the stand rods before the stand rods itself raised and placed on the next lower stand poles, preferably put on. So it can be the limiting elements already mounted on the stand rods with the stand poles themselves. It is special also possible, first of all, one end of a limiting element on a hook Stand rod and then attach the stand rod with the fixed end of the limiting element to raise while the limiting element in the rest, which is preferably rod-shaped, depends on the hook, because the hook element such a pendulum movement of the limiting element allows. Is the corresponding one Stand rod mounted, that is, plugged on, the free end of the limiting element be attached to a hook on another stand rod, which then, likewise raising the fixed end of the limiting element, raised and is placed in the correct position on the next lower stand rod. there in turn pivots the limiting element around the hook of the already fastened element.

Preferably, in particular, two parallel limiting rods can also be used as Limiting elements can be provided. Nevertheless, the described assembly method is convenient possible, because then the two over the two parallel limiting rods with each other connected stand rods are pivotable like a parallelogram, so that even after installing the first stand rod, the second stand rod with the others Ends of the limiting rod can be raised and mounted.

For better stiffening and connection of the double linkage from the pillars of the frame parts and the stand rods is provided according to a development of the invention that at least one stand rod has a protruding guide loop which corresponds to the predetermined one Distance between the stand rod and a column of a frame part with pretending their expansion, over that before the next higher scaffold bar is erected towering end of the column is cuff-like brushed.

The stand rod thus has a fixed loop which has such an extent that after slipping the loop over the column of the associated frame part the two corresponding linkage elements can have a maximum of the predetermined distance and are also stiffened together by the connecting loop.

For this purpose, the guide loop can be made upright, for example, from a metallic flat strip be trained.

On the other hand, a spacer can be provided, preferably on the stand rod be arranged and protrude from this, for example, pin-like to ensure that the column inserted into the connecting loop also minimally the predetermined distance to the stand rod, so that a positionally accurate guidance of the rod parts to each other is guaranteed. In addition, through the guide loop and the spacer for example, bending forces or the like absorbed.

If the guide loop is formed by means of a flat band, this becomes the guide loop over the connector area of the associated column of the frame part, for example pushed down to the cross strut, it must be ensured that by this guide loop and the upright upright flat band does not ensure that it is securely attached of the next higher frame part is impaired. In particular, must be guaranteed be that for securely attaching the next higher frame part, its lower cross strut lowered deep enough to the upper cross strut of the next lower frame part can be. In order to already set this lowering path, points to further training of the invention, the guide loop has a recess at the corresponding point into which the lower cross strut of the next higher frame part is inserted can be.

Conventionally, frame parts are used in which the cross strut either have a T-profile in cross-section or a rectangular profile. So that provided Recess is suitable for receiving both types of cross bracing, the recess has preferably a shape that ensures this by an upper rectangular shape changes into a T-shape in the lower region of the recess.

In the case of the lowest stand poles, it is preferably provided that these instead of with Guide loops are equipped with clamp-like connecting elements, so that in any case these lowest stand poles with the clamp-like connecting elements the bottom pillars of the frame parts can be attached to one to achieve a secure position and also absorb the first weight of higher stand rods to be able to.

Such clamp-like connecting elements would of course also be used for the higher stand rods possible, but guide loops have the advantage of being much faster To enable assembly without tools.

According to a further development of the invention, the stand rods can be connecting elements for fastening diagonal struts. Since the stand rods for Securing the rear boundary elements provided on the back of the scaffold the diagonal struts on the back of the stand rods are also relevant to be arranged instead of on the frame parts themselves. For example, for attachment diagonal struts of this type, which in principle have a similar rod-like design can, like the delimiting elements, conventionally be provided as they at the current state of the art as connecting elements for the delimiting elements were provided.

Fig. 1

den Aufbau eines Gerüstes aus einem erfindungsgemäßen Bauelementensatz beim Aufbau erster Gerüstfächer,

Fig. 2

eine Detailansicht eines Abschnittes einer Ständerstange mit einem Haken,

Fig. 3

eine weitere Detailansicht eines Abschnittes einer Ständerstange mit einer Führungsschlaufe,

Fig. 4

das in Fig. 1 mit IV bezeichnete Detail,

Fig. 5

die Führungsschlaufe gemäß Fig. 3 in einer etwas anderen Stellung,

Fig. 6

das in Fig. 1 mit VI bezeichnete Detail,

Fig. 7

ein Detail entsprechend Fig. 6, jedoch mit einer Querverstrebung mit einem alternativem Querschnitt,

Fig. 8

das inFg. 1 mit VIII bezeichnete Detail und

Fig. 9

eine unterste Ständerstange und eine darauf aufsteckbare höhere Ständerstange in ihren Gesamtansichten.

An embodiment, from which further inventive features are shown in the drawing. The schematic perspective views show:

Fig. 1

the construction of a scaffold from a set of components according to the invention when building first scaffold compartments,

Fig. 2

a detailed view of a portion of a stand rod with a hook,

Fig. 3

4 shows a further detailed view of a section of a stand rod with a guide loop,

Fig. 4

the detail designated IV in FIG. 1,

Fig. 5

3 in a slightly different position,

Fig. 6

the detail designated VI in FIG. 1,

Fig. 7

6 shows a detail corresponding to FIG. 6, but with a cross strut with an alternative cross section,

Fig. 8

the inFg. 1 with VIII designated detail and

Fig. 9

A bottom stand rod and a higher stand rod that can be plugged onto it in their overall views.

1 shows the structure of a scaffold in a schematic perspective view a set of components according to the invention, namely when setting up first scaffold compartments.

On the floor level there are three frame parts 1, each consisting of two vertically upstanding columns 2a, 2b and transverse struts 3a, 3b connecting them. These three frame parts 1 mentioned are on base plates 4, with telescopic if necessary Feet, parked on the floor.

These frame parts 1 each serve as side parts of scaffold compartments to be erected, whereby two side parts with each other via walkable planks 5 with each other are connected. These walk-on planks 5 form the floors of the next higher ones Scaffolding days or the next higher scaffolding compartment. The planks 5 are on their end faces Edges placed on thorns 6, which from the upper cross braces 3b of each of the lower frame parts 1. The planks 5 are against the lifting Thorns 6 through the lower cross bracing 3a of the higher one placed above them Frame part 1 secured. In Fig. 1, two frame parts are already on the second level 1 shown.

In addition, a scaffold compartment is indicated by an additional diagonal brace 7 reinforced.

Of the frame parts 1, the rear columns are designated by 2a. Backwards should be the side of the scaffold shown, that of the open working side of the scaffold is facing away, for example the side facing a retrofit from the street Building can be seen immediately, while the working side of the one to be edited, for example Facade of the house is facing.

The above-mentioned rear pillars 2a are used in the construction of the scaffolding with additional ones Stand rods 8a, 8b connected. the stand rods 8a, 8b are also in accordance with Art of tent poles for creating the higher floors, like the columns 2a, 2b of the frame parts 1.

As indicated in FIG. 1, the are relatively early in the construction of the scaffold the next higher upright rods 8b are plugged in, before the next higher up Frame parts 1 are attached, preferably even before the planks 5 of the corresponding ones Scaffold level. First of all, the stud frame of the additional Scaffolding poles grow up in the next scaffolding days before the scaffolding compartment the next higher scaffolding level is created. The stand rods 8b carry namely rod-shaped delimitation elements 9, which the respective scaffold level with respect to Secure the risk of falling as a railing. These railings from the boundary elements 9 should be created as possible before the planks 5 are walked on the same scaffold level or can be committed.

For this purpose, the stand rods 8b for the limiting elements 9 have hooks 10 on which Connection eyes 11 of the limiting elements 9 can be attached. This appending the connecting eyes 11 on the hook 10 is in particular possible before the corresponding stand rod 8b itself is brought into its final position, for example as on the left side of Fig. 1, plugged onto the lowest stand rod 8a becomes.

The stand rods 8b have guide loops 12 which are attached to the stand rod 8b are pushed over the upstanding ends of the pillars 2a, to the stop on the upper cross strut 3b of this column 2a.

Only when the stand rod 8b in the manner described with the limiting elements 9 is brought into the final position, the next higher, assigned frame part 1 slipped onto the frame part 1 underneath, and so deep until the lower one Cross strut 3a of the upper frame part 1, the planks 5, previously on the thorns 6 of the upper cross strut 3b of the lower frame part 1 have been placed against lifting backs up from the mentioned thorns 6. But are the frame parts 1 of the next higher Plugged level, there are the connecting eyes 11 and their hooks between the respective stand rod 8b and the column 2a, so that the connecting eyes 11 are not more can be lifted off the hook 10. This is related to the Fig. 4 will be explained in more detail.

The bottom stand rods 8a have no guide loops 12, but instead, clamp-like connecting elements 13, which are attached to the pillars 2a of the lowest frame parts 1 can be connected. The bottom stand rods 8a are also shorter, than the upper stand rods 8b and also shorter than the columns 2a of the Frame parts 1. This leads to the fact that the plug connection areas of the stand rods 8a, 8b each at a gap or halfway up to the corresponding connector areas the frame parts 1 are. This favors a half-stage structure initially once the stand rods 8b for the next higher floor and then the frame parts 1 of the next higher floor.

Fig. 2 shows in detail a short section of a stand rod 8b. It can be seen in particular the hook 10 arranged in this area. In addition, the detail provides the essential Section of the connector portion of the stand rod 8b, which is in this area via a ledge 14 for the plug connection to an upstanding plug pin 15 tapered. In the area of the plug pin 15 there is also a bolt hole 16 for to recognize a locking bolt to secure the connector.

Fig. 3 shows another section of a stand rod 8b. In this section there is one Guide loop 12 can be seen and its recess 17. In addition, is under the guide loop 12 a stop pin 18 is arranged as a limit stop. Also located a so-called toggle pin, ie in the section of the stand rod 8b shown a pin with a tiltable, cotter-like locking element 20. This tilt pin 19 is intended for the arrangement of a diagonal brace 7, which in principle is similar to a connecting eye is designed like the delimiting elements 9.

FIG. 4 shows the area IV encircled in FIG. 1 with a dash-dotted line is in particular, as in the assignment of a stand rod 8b and a column 2a Connecting eyes 11 of limiting elements 9 are secured against disassembly, because the hook protrudes from the stand rod 8b up to the column 2a and thus the Distance between these two link elements completely bridged, so that for disassembly of a connecting eye 11 necessary lifting movement in the area of Hook 10 is no longer possible, and not until the column 2a when the Scaffolding itself is removed.

5 shows in particular the guide loop 12 with its recess 17 again in FIG a somewhat different view than Fig. 3. The function of this recess 17 and its special shape is clear in connection with FIGS. 6 and 7.

6 and 7 each show sections of stand rods 8b and 8b Columns 2a, which are connected to one another via guide loops 12. Determined the extension of the guide loop 12 the maximum distance between the two linkage elements 2a, 8b from each other, while the stop pin 18 each the minimum distance specifies, so that ultimately the two linkage elements 2a, 8b virtually over the guide loop 12 and the stop pin 18 are clamped together in such a way that forces are also absorbed and can be transferred.

In particular, FIGS. 6 and 7 also show a section of the respective upper cross strut 3b of the lower column 2a, of which the domes 6 for the planks 5 tower.

In addition, a section of the lower cross strut 3a is the upper one Recognize pillar 2b. The guide loop 12 covers the joint that between the two columns 2a placed one on top of the other. During this push-on operation the upper column 2a is lowered so far that its cross strut 3a is in the recess 17 of the guide loop 12 lowers. However, since, as shown in FIGS. 6 and 7, the cross strut 3a either a T cross section as in FIG. 6 or a rectangular cross section as 7, the recess 17 supports these two possible shapes their own shape by taking a special T shape with a special has pronounced crossbar area.

FIG. 8 shows the detail designated VIII in FIG. 1, in particular with a lowermost one Stand rod 8a. The clamp-like connecting elements can be seen in particular 13 of this lowest stand rod 8a. Otherwise, there are also tilting pins 21 on the column 2b shown, which are used according to conventional technology for the arrangement of limiting elements 9 could, namely, threaded the connecting eyes 11 each over these tilt pins 21 become. Then the pillars 2b would each be the rear pillars of the scaffold.

Fig. 9 shows again overall views of stand rods 8a and 8b in comparison. The same components are designated with the same reference numerals as in the previous ones Characters. In particular, Fig. 9 can be seen again that the upper stand rods 8b are formed significantly longer than the lower stand rods 8a in order to achieve that the plug connection areas of these stand rods 8a, 8b on gap or halfway to the plug connection areas of the frame parts 1 or the pillars 2a, 2b are arranged in the scaffolding.

For the plug connection of the stand rods 8a, 8b there are also bolt holes 22 for locking bolts indicated.

Claims (14)

Set of components for a scaffold with frame parts that can be assembled into scaffold days with cross struts for arranging accessible floors, preferably planks, for the scaffold days, with at least one limiting element that can be arranged above the edge of a floor as fall protection and preferably with diagonal struts for static reinforcement of scaffold compartments formed from frame parts and floors, characterized by an arrangement of the limiting element (9) in the structure of the scaffold in a position from which it can only be removed again or only when the scaffold is dismantled. Component set according to claim 1, characterized by stand rods (8a, 8b) which can be arranged in parallel and at a short distance from a vertically extending column (2a) of a frame part (1), such that connecting elements or areas (connecting eyes 11) of the at least one Limiting element (9) are non-detachably received between a stand rod (8b) and the column (2a) of the frame part (1). Component set according to claim 2, characterized in that the limiting element (9) has at each of its ends as a connecting element an eyelet or an eye (11) which can be suspended on a hook (10) which is between the stand rod (8b) and the column (2a) of the frame part (1) is arranged and is so long that it completely fills and bridges the distance between the stand rod (8b) and the column (2a). Component set according to claim 3, characterized in that the hook (10) is arranged on the stand rod (8b). Component set according to one of the preceding claims, characterized in that the limiting element (9) is designed essentially as a rod. Component set according to one of claims 2 to 5, characterized in that at least one stand rod (8b) has a projecting guide loop (12) which, with the predetermined distance between the stand rod (8b) and a column (2a) of a frame part (1) prescribing its expansion, over which the free end of the column (2a) protrudes before the erection of the next higher scaffolding days in the manner of a cuff. Component set according to claim 6, characterized in that the guide loop (12) is formed from an edge of a metallic flat strip. Component set according to Claim 7, characterized in that the flat strip has a recess (17) in the area to be placed on the inside of the column (2a) of the frame part (1) facing away from the stand rod (8b), in which the cross strut (3a) of the next higher one Frame part (1) can be positively lowered with its cross-sectional profile. Component set according to Claim 8, characterized in that the recess has a shape which essentially corresponds to a T-shape with a pronounced crossbeam, such that a cross-strut (3a) with a T-profile can be used as far as the depth of the recess (17 ) or a cross strut (3a) with a rectangular profile can only be lowered into the area of the crossbar of the T-shape. Component set according to one of Claims 2 to 9, characterized by a guide and stop limitation (18) as a spacer which projects beyond the distance between a stand rod (8b) and a column (2a) of a frame part (1). Component set according to one of claims 2 to 10, characterized in that a lowermost stand rod (8a) has clamp-like connecting elements (13) for connection to a column (2a) of a frame part (1). Component set according to one of claims 2 to 11, characterized in that the stand rod (8a, 8b) and the frame parts (1) are each designed to be pluggable for the construction of higher scaffolding days and that the plug-in connection areas of the stand rods (8a, 8b) approximately on a gap or half-high with regard to the plug connection areas of the frame parts (1) are provided. Component set according to claim 12, characterized in that the plug connections can be locked by cross bolts. Component set according to one of claims 2 to 13, characterized in that the stand rods (8a, 8b) have connecting elements (tilting pins 19) for fastening diagonal struts (7).

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