EP0770165B1 - Frame component - Google Patents

Abstract

PCT No. PCT/EP95/01972 Sec. 371 Date Apr. 3, 1997 Sec. 102(e) Date Apr. 3, 1997 PCT Filed May 24, 1995 PCT Pub. No. WO96/01933 PCT Pub. Date Jan. 25, 1996Scaffoldings are usually either movable or fixed. Structures usable for both are usually too bulky and complicated, and therefore not suitable for general use. The invention provides a solution because the platforms are interchangeable on the scaffolding frames and the frame components are equipped with a grid for the connection components of the other structural components involved. The frame components are thereby, in spite of the extensive use of light structural sections, extraordinarily torsion resistant. The invention can be designed to be extensively modular.

Description

The invention relates to a frame element for a vertical to be erected scaffolding frames of a stationary and / or movable scaffolding made of prefabricated components, consisting of two in the area of their ends horizontal crossbeams with one another in the operating state rigidly connected, preferably circular tubular in cross section Stands with the stands at one end always a first one that closes the respective stand Part, for example, an integrated piece of pipe and on her the other end a complementary second, the respective one Stand protruding part, such as a bolt piece, have a lockable plug-in coupling Connections of the crossbeams to the uprights with torsion-resistant, the preferably rectangular shape of the frame element stabilizing stiffeners are provided and the upper cross-member is continuous and immediate is connected to the stands.

Such a frame element is known from GB-A-2 032 504.

To be fixed to the structure and if necessary in moveable convertible scaffolding from prefabricated components have been known for a long time. A comprehensive application this scaffolding stands in the way that the necessary Rubber platforms are not variable in height with the Scaffold frames are connectable and especially not the complete scaffolding at will and without great effort to be added and removed or offset in height can. The usually for connecting the other components closures on the stands are mostly susceptible to wear, require considerable assembly and Disassembly effort and are also during transport and stacking the frame elements obstructive. The connection of the spars and striving is to certain heights through the stationary Scaffolding set and not flexible enough to work on one mobile scaffolding to be used successfully at which these heights are made much more variable have to be. Differentiate between the side frame frames also rigidly attached itself from the rest Ladder rungs for the climb so that a second type of Frame elements must be provided.

The invention has therefore set itself the task To design the frame element of the type specified at the outset in such a way that that the disadvantages of the known scaffold frames are eliminated be and especially on the fully assembled Scaffolding covering platforms can be suspended, suspended and attached as required can be the connection of all components to the stands in a simple manner with similar connection elements and possible in a relatively small-scale grid and the frame elements also serve as ladder rungs Crossbars can be equipped. The frame elements should stackable and designed so that none of the preferred side surfaces parallel to the processed building trained and each of these side surfaces as a work front can be used.

This object is solved by the features of claim 1.

Such an arrangement has the great advantage that the lower one Crossbeam to a large extent in the space between adjacent platforms of the same level sunk can still be on both sides above the platform the remaining parts of the crossbar as connecting elements be available for all other components of the scaffolding. At the same time, by going in several directions improved cross-beam bending strength a stiffening Effect.

A preferred embodiment of the frame element according to the invention you get when the lower crossbar is off two on both sides connected to the stands at the same height, short, horizontal first console pieces, each one on each of the free, facing each other Attach the ends of the console pieces pointing downwards with the associated console piece, a respective first one Stiffening tab and one on both sides of the Fastened brackets, with a vertical distance to the axis of the horizontal brace provided for the console pieces. The strut and the tabs are not used as supports or connecting element used and can therefore be relative can be easily formed without the stiffening of the Frame element at the lower end would be at risk. It can therefore suffice if the tabs are designed as sheet metal profiles are and / or the strut and / or the tabs a rectangular, preferably flat rectangular cross section exhibit. It is particularly advantageous if the lower crossbar is attached to the stands so that the underside of the strut is approximately flush with the lower ends the stand is because on the one hand the cranking of the Crossbar the neighboring decking for the most part towering and on the other hand not below the lower ends of the Stand is overhanging, so that the upper crossbar in close proximity, but still at the top of the stand can be provided.

A version in which the Console pieces of the lower crossbeam so far above the associated strut are attached to the tabs and a such a distance from the upper crossbeam of the down subsequent next frame element have that on of the upper crossbar, the cross-section of which is included overlapping connecting element of a covering platform or the same when the plug-in coupling acts on the upper crossmember applied or removed from this. In this way, the scaffolding can also be installed remove the covering platform at any time and, if necessary, on elsewhere to be hung again. On the other hand the console pieces of the lower crossbeam still also available for connecting elements of other components, if a covering platform on the neighboring upper one Crossbar of the next frame element rests so that the corresponding node of the scaffolding frame for several Components can be used simultaneously.

The dimensional stability of the frame element can be improved, if the upper crossbeam is on its underside on both sides with second stiffeners, to the Stands connected diagonal bars that are connected advantageous with the stands by short, horizontal, for Connection of covering platforms, struts, spars, shelves or other components suitable second bracket pieces can be connected. This way it is up to the concerned Another connection element is the node of the scaffolding frame attachable. If you make sure that the crown the upper crossbar is approximately flush with the upper ends the stand is so the ends of the stand are not survivable and those adjacent to the node Crossbeams are closely adjacent or lie on top of each other; the size of the offset of the lower cross members is therefore restrictable.

A frame element according to the invention is extremely variable usable if on the stands between the cross members short, horizontal, for connecting decking platforms, Struts, spars, shelves or other components suitable third bracket pieces are provided; can these third console pieces all or in part in the Field between the stands pointing, and it is useful if the third console pieces at least partly provided in pairs at the same height are. This makes it possible to use components in both End faces as well as in the side surfaces of the scaffolding to be provided while maintaining a certain symmetry of the scaffolding to maintain, so that neither of their two side surfaces is preferred is. This is particularly the case with mobile scaffolding from Advantage. On the console pieces can be used as ladder rungs serving crossbar be placed.

Compatibility of the frame elements for both types of Scaffolding will be further improved if the third console pieces are attached to the stands so that they are together with the upper crossbars a grid is the same Form grid height. This grid is also there not disturbed by the nodes of the scaffolding. It defines the possible spacing of the ladder rungs, if the (third) console pieces through the (attached) crossbars are interconnected, and allows the height offset of topping platforms within the height of the invention Frame element.

The connection elements of all connectable to the stands Components can be largely uniform, if the upper crossbar and / or the diagonal bars and / or the console pieces have a similar cross section exhibit. In this way, these cross sections can always be overlaid in the same way if the connecting element regardless of the direction of the component in Space is attached to this so that it is always perpendicular from can slide over the cross section at the top, even if it does is not rotationally symmetrical, but instead preferably from a first lower, rectangular partial cross section and a flush one upper, preferably semicircularly curved upwards second partial cross section is composed. Such a Cross-section combines a high resistance moment against Deflection with the possibility of easy application the corresponding connection element while avoiding of voltage peaks in the components involved.

The lightweight construction of such a frame element is promoted if its components consistently or partially by means of Welds joined together and / or as preferred extruded hollow profiles are formed.

The frame elements are easily stackable if the width of the Cross sections of the crossbeams and the third bracket pieces is dimensioned so that their connections to the stands this have moved in slightly.

The frame elements according to the invention have made it possible a modular scaffolding both stationary and to be transportable, even in a fully assembled Condition changing conditions at the construction site at any time can be adjusted so that complex transports and extensive storage of the required components can be avoided.

Fig. 1

ein mit erfindungsgemäßen Rahmenelementen aufgebautes Baugerüst in der Gesamt-Übersicht

Fig. 2

eine Einzelheit X aus Fig. 1, etwas vergrößert, beide in der gleichen Sichtachse einer räumlichen Darstellung,

Fig. 3

eine Ansicht Y aus Fig. 2 in einer demgegenüber veränderten Sichtachse, nochmals vergrößert,

Fig. 4

die Hauptansicht eines erfindungsgemäßen Rahmenelementes, Fig. 5 eine Variante zu Fig. 4 und

Fig. 6

aufgestapelt gelagerte Rahmenelemente entsprechend Fig. 4 oder 5 im Bereich der unteren Quertraversen in räumlicher, gegenüber den Fig. 4 und 5 vergrößerter Darstellung,

sämtlich schematisch vereinfacht gezeichnet. The invention is explained below with reference to the drawing using an exemplary embodiment. Show it

Fig. 1

a scaffolding constructed with frame elements according to the invention in the overall overview

Fig. 2

1 a detail X from FIG. 1, somewhat enlarged, both in the same visual axis of a spatial representation,

Fig. 3

3 shows a view Y from FIG. 2 in a view axis which has been changed in comparison, enlarged again,

Fig. 4

the main view of a frame element according to the invention, Fig. 5 shows a variant of Fig. 4 and

Fig. 6

4 or 5 in the area of the lower cross members in a spatial representation, enlarged compared to FIGS. 4 and 5,

all drawn schematically simplified.

1 initially consists of four Scaffolding frame G with frame elements R according to the invention and a scaffold frame G 'with frame elements not according to the invention R 'that here as an ascent to the scaffolding serves. The scaffold frame G 'can easily be replaced by a Scaffold frame G to be replaced. The scaffold frames G, G 'are with each other through covering platforms B, diagonal longitudinal struts S and longitudinal railing spars GH and intermediate spars ZH connected. The covering platforms B are in a known manner partially with hatches D and - omitted in the drawing - Equipped longitudinal and transverse rims.

A frame element R according to the invention exists accordingly 4 and 5 from two parallel, tubular stands 1, at their upper and lower ends 11, 12 each an upper cross member 2 and a lower cross member 3 are rigidly connected to each other so that a torsionally rigid, load-bearing component is created. At the ends 11 and 12 a plug-in coupling 4 is thereby formed (FIGS. 2 and 3), that the upper ends 11 of the stand 1 as bolt pieces 41 and the lower ends 12 are formed as tubular pieces 42 are, these pipe pieces 42 in a simple manner each form in one piece a part of the stand 1. A Bolt lock locks the two parts 41, 42 each with each other, in which for this purpose safety holes 13 are provided, which can be brought into alignment. As a result, several frame elements R can be placed one on top of the other will; where the plug-in couplings 4 are formed the upper and lower cross members are 2 and 3 each immediately adjacent.

The upper crossbar designed as a linear profile piece 2 is welded to the stands 1 on both sides; its apex 21 is with the upper end 11 of the stand 1 flush, on the complete frame G the lower one End 12 of the next higher stand 1 rests. The The crossbar 2 is clamped by diagonal bars 22 relieves, in particular to derive the support forces a covering platform B resting on the crossbeam 2 serve in the stand 1 and each by means of a short horizontal, welded to the diagonal bar 22 below first bracket piece 23 are connected to the stand 1. Since here the bracket piece 23 also by a weld is connected to the stand 1, results in a total of each of the gusset between the crossbar 2 and the stands 1 one with reference to first stiffeners V2 on the lower one Crossbeam 3 second stiffening V1 of this area and the frame element R as a whole.

The lower crossbar 3, which is bent at both ends includes a strut 30 on both sides perpendicular to sheet-metal tabs 31 directed at the top are welded on, each by the width b from the neighboring stand 1 are spaced. The tabs 31 connect the strut 30 with second welded on the outer sides of the tabs 31 Console pieces 32, which on the other hand on the stands 1 are connected. The console pieces 32 are against the strut 30 is offset in height by the height h on the tabs 31 arranged. The strut 30 is with respect to its underside 30a by a slight indentation e of the respective provided lower end 12 of the stand 1 pushed upwards, so that they are spaced from the upper cross member 2 by this amount is, as can be seen particularly well in FIG. 3 is. The sum of the indentation e and the amount h results in a clear distance a between the respective console piece 32 and the apex 21 of the next upper crossbar 2, which is dimensioned so that the in Figs. 2 and 3 indicated hook-shaped connection elements AE of the placed Rubber platform B can be lifted off and then off deducted the clearing between the tabs 31 and the stand 1 can be. The platform B can now be removed or be inserted without the plug-in coupling 4 of the Node KP (Fig. 3) would have to be dismantled. In the Fig. 2 can be clearly seen that the strut 30 Closes the gap L between adjacent covering platforms B. Their flat rectangular cross section Q1 (Fig. 4) is slight below the tread T (Fig. 2) of the platform B lowered, which is not bothersome and on the other hand has the advantage that the strut 30 as a support for a toe board can be used when the frame element R is provided at the bottom of the scaffold frame G.

On stand 1 there are still third, short, horizontal console pieces 16 welded on, either in the room itself is located in the frame element R between the stands 1, or also in angularly offset, not considered in the drawing Arrangement, for example for those to be connected Components that face towards the end faces extend the scaffolding. The console pieces 16 instruct the frame element R inside and are usually as in 4 arranged in pairs at the same height; 5 shows that irregular arrangements are also possible.

All console pieces 16, 23, 32, the upper crossbar 2 and the diagonal bars 22 are all the same Cross section Q2 (in FIG. 4 in the upper cross member 2 indicated), which consists of a first lower, rectangular partial cross section Q2 'and a flush adjoining upper, semicircularly curved upwards second partial cross section Q2 ". The cross section Q2 (Fig. 3) is well suited for connecting the connection elements AE on the components to be connected to the scaffold frame G. The connection elements AE are hook-shaped and slide over the cross section Q2 and are there if necessary secured.

The arrangement of FIGS. 1 and 4 shows that there the console pieces 16 together with the upper crossbar 2 Form (height) grids with a constant grid height r, so that the scaffolding can be varied as desired without that special components would have to be provided for this.

The frame elements R are (Fig. 6) stackable because the Cross sections Q1 and Q2 of all components between the stands 1 these are slightly drawn in, so that the frame elements R side-overlapping to save space can be. They are relatively easy because of that most components light and moreover as inexpensive extruded hollow profiles can be produced.

List of reference numbers

1

Stand

11

End (top)

12th

End (lower)

13

Securing hole

16

Console pieces (third)

2nd

Cross beam (upper)

21

Parting

22

Diagonal bar

23

Console piece (second)

3rd

Crossbeam (lower)

30th

strut

30a

bottom

31

Tab

32

Console piece (first)

4th

Plug-in coupling

41

Bolt piece, (first) part

42

Pipe piece, (second) part

a

distance

b

width

e

Indentation

H

height

r

Grid height

AE

Connector

B

Topping platform

D

Step through

G, G '

Scaffolding

GH

Guardrail

KP

Node

L

gap

Q1

Cross section (strut 30, tab 31)

Q2

Cross section (bracket pieces 16, 23, 32, crossbar 2 and
Diagonal bars 22)

Q2 ', Q2 "

Partial cross-section (from Q2)

R, R '

Frame element

S

Longitudinal strut

T

Tread

V1

Stiffening (second)

V2

Stiffening (first)

ZH

Intermediate spar

Claims (18)

1. A frame element for a scaffolding frame (G) - to be set up vertically - of stationary and/ or movable scaffolding of pre-fabricated structural elements,

   a) comprising two stands (1) which are rigidly connected to each other in the region of their ends (11, 12) by transverse cross-members (2, 3) horizontal in the operating state and which in cross-section are preferably in the form of circular tubes,

   in which

   b) the stands (1) are each provided at one (12) of their ends with a first respective part, for example an integrated tube member (42), closing off the respective stand (1), and at their other end (11) with a second part complementary thereto, for example a bolt member (41), of a lockable insertion coupling (4), projecting beyond the respective stand (1),

   c) the connexions of the transverse cross-members (2, 3) on the stands (1) are provided with torsion-damping reinforcements (V1, V2) which stabilize the preferably rectangular shape of the frame element (R), and

   d) the upper transverse cross-member (2) is made continuous and is directly attached to the stands (1),

   characterized in that

   e) the lower transverse cross-member (3), bent downwards at right angles on both sides to form first reinforcements (V2) of the lower transverse cross-member (3), is attached to the stands (1).
2. A frame element according to Claim 1, characterized in that the lower transverse cross-member (3) comprises two short horizontal first bracket members (32) attached to the stands (1) on both sides at the same height, one respective fastening plate (31) - which is attached pointing downwards to each of the free ends of the bracket members (32) directed towards one another and which together with the associated bracket member (32) forms a respective first reinforcement (V2) and a horizontal brace (30) secured to the fastening plates (31) on both sides and provided at a vertical distance from the axis of the bracket member (32).
3. A frame element according to Claim 2, characterized in that the fastening plates (31) are formed as sheet-metal sections.
4. A frame element according to Claim 2, characterized in that the brace (30) and/or the fastening plates (31) has or have a rectangular, and preferably a flat rectangular, cross-section (Q1).
5. A frame element according to one of Claims 2 to 4, characterized in that the lower transverse cross-member (3) is secured to the stands (1) in such a way that the underside (30a) of the brace (30) is approximately in alignment with the lower ends (12) of the stands (1).
6. A frame element according to one of Claims 2 to 5, characterized in that the bracket members (32) of the lower transverse cross-member (3) are secured to the fastening plates (31) so far above the associated brace (30) and are at such a distance from the upper transverse cross-member (2) of the next frame element (R) attached below that a connexion element (AE) - which can be laid on the upper transverse cross-member (2) and which engages over the cross-section (Q2) thereof - of a scaffolding stage (B) or the like can be mounted on the upper transverse cross-member (2) or can be removed therefrom while the insertion coupling (4) is operative.
7. A frame element according to one of Claims 1 to 6, characterized in that the upper transverse cross-member (2) is connected on both sides on its underside to diagonal rods (22) forming second reinforcements (V1) and attached to the stands (1).
8. A frame element according to Claim 7, characterized in that the diagonal rods (22) are connected to the stands (1) by short horizontal second bracket members (23) suitable for attaching scaffolding stages (B), bracings (S), cross-heads (GH, ZH), edges or other structural elements.
9. A frame element according to Claim 7 or 8, characterized in that the apices (21) of the upper transverse cross-member (2) is approximately in alignment with the upper ends (11) of the stands (1).
10. A frame element according to one of Claims 1 to 9, characterized in that short horizontal third bracket members (16) suitable for attaching scaffolding stages (B), bracings (S), cross-heads (GH, ZH), edges or other structural elements are provided on the stands (1) between the transverse cross-members (2, 3).
11. A frame element according to Claim 10, characterized in that third bracket members (16) are provided pointing into the space between the stands (1).
12. A frame element according to Claim 10 or 11, characterized in that the third bracket members (16) are provided at least in part in pairs at the same height in each case.
13. A frame element according to one of Claims 2 to 12, characterized in that the third bracket members (16) are secured to the stands (1) in such a way that together with the upper transverse cross-members (2) they form a grid of the same grid height (r) in each case.
14. A frame element according to Claim 1 and one of Claims 2 to 13, characterized in that the upper transverse cross-member (2) and/or the diagonal rods (22) and/or the bracket members (16, 23, 32) have a similar cross-section (Q2).
15. A frame element according to Claim 14, characterized in that the cross-section (Q2) is formed from a first lower rectangular partial cross-section (Q2') and an adjoining upper second partial cross-section (Q2") in alignment therewith and curved upwards preferably in a semicircular shape.
16. A frame element according to one of Claims 1 to 15, characterized in that the components thereof (1, 2, 3, 16, 23, 32) are connected to one another completely or in part by means of welding seams.
17. A frame element according to one of Claims 1 to 16, characterized in that the components thereof (1, 2, 3, 16, 23, 32) are formed completely or in part as preferably extrusion-moulded hollow sections.
18. A frame element according to one of Claims 1 to 17, characterized in that the width of the cross-sections (Q1, Q2) of the transverse cross-members (2, 3) and of the third bracket members (16) is such that their connexions to the stands (1) are slightly reduced with respect thereto.

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