EP0172293A1 - Grandstand with demountable steps - Google Patents

Grandstand with demountable steps Download PDF

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Publication number
EP0172293A1
EP0172293A1 EP84440041A EP84440041A EP0172293A1 EP 0172293 A1 EP0172293 A1 EP 0172293A1 EP 84440041 A EP84440041 A EP 84440041A EP 84440041 A EP84440041 A EP 84440041A EP 0172293 A1 EP0172293 A1 EP 0172293A1
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EP
European Patent Office
Prior art keywords
demountable
riser
gantries
grandstand
risers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84440041A
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German (de)
French (fr)
Inventor
Bernard Doublet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Doublet Festitub SA
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Doublet Festitub SA
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Filing date
Publication date
Application filed by Doublet Festitub SA filed Critical Doublet Festitub SA
Publication of EP0172293A1 publication Critical patent/EP0172293A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/12—Theatre, auditorium, or similar chairs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
    • E04H3/10—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons for meetings, entertainments, or sports
    • E04H3/12—Tribunes, grandstands or terraces for spectators

Definitions

  • the present invention relates to a removable step gallery. It is intended in particular to receive spectators at public events.
  • Such a type of grandstand having a solid structure made of tubes joined together.
  • On this structure forming a staircase frame is fixed a floor by fixing means such as nails or bolts.
  • On this floor we just put seats one by one, then we join these seats together and then we fix them on the floor.
  • the platform When the platform is mounted, its rigidity is improved by fixing the cross-pieces in the metal structure.
  • the staircase structure of the grandstand having no steps allows the rubbish to pass through these holes and settle under the grandstand.
  • the object of the present invention is to present a demountable platform which can easily be mounted and then dismantled while overcoming the various drawbacks mentioned above.
  • One of the aims of the present invention is to present a platform having a resistant structure during assembly and disassembly operations.
  • Another object of the present invention is to present a removable step platform which is stable once mounted by the fact that it has structural elements improving its rigidity.
  • the demountable grandstand in particular intended to receive spectators at public events, composed of a metal frame structure, forming a staircase frame, comprising a floor on each step and risers supported in the metal frame, is characterized by the fact that the risers and the boards block each other by embedding the floors between the risers.
  • the invention aims to present a removable step gallery which can be easily installed and which has excellent stability.
  • Figure 1 shows the general appearance of the tribune made according to the present invention.
  • the demountable grandstand 1 is composed of a metal frame structure 2, forming a staircase frame, comprising a floor 3 on each step and risers 4 supported by the metal frame 2.
  • Guardrails 5 and 6 are placed along the lateral sides and on the back of grandstand 1 so as to avoid falls.
  • the floor support frame 7 consists of tubes welded to each other to form a right triangle whose slope is that of the platform.
  • This floor support gantry 7 can be reinforced by welding a tube 15 forming the median of the triangle.
  • brackets 17 On the side 16 of this triangle are welded brackets 17 equidistant from each other. These brackets 17 are connected to each other by support bars 18 which form the steps of a staircase.
  • the brackets 17 and the support bars 18 are positioned in such a way that the support bars 18 are parallel to the long side 19 of the triangle forming the floor support gantry 7.
  • the height gantries 8 consist of tubes welded to each other to form a right triangle whose slope is the same as that of the gantry supports 7.
  • Gantry cranes 7 and 8 are fitted with mounting devices blocking allowing the interlocking of the gantries 7 on the gantries 8 or the gantries 8 between them. It is also possible to fit these gantries 7 and 8 into support legs 9.
  • the support legs 9 are intended to support the entire platform 1. They are composed of a support plate 20 which will be placed on the ground, and of a jack 21 which will allow an adjustment in height so that all the support feet are in contact with the ground whatever its flatness.
  • the different gantries 7 or 8 are interconnected to form the framework of the platform 1, by bracing frames 10. These frames are intended to stiffen the framework of the platform 1. They are composed of tubes welded according to a trapezoidal shape as shown in figure 2. They have interlocking fixing devices allowing their connection with the different gantries 7 and 8.
  • the intermediate risers 12 are made up of metal beams, the cross section of which is C-shaped as shown in FIGS. 2 and 3.
  • the intermediate risers 12 each have an upper part 22 and a lower part 23 interconnected by a core 24.
  • the end 25 of the upper part 22 of the riser 12 is folded outwards at right angles.
  • the front risers 11 are composed of an S-shaped metal beam as shown in Figures 2 and 3 the upper loop 26 of the S has the same shape as the intermediate riser 12.
  • the lower loop 27 of the S bent in the other direction allows it to be fixed by mechanical means to the metal frame 2.
  • the riser is a high riser 13. They are similar to the intermediate risers 12 but they are fixed by mechanical means in the metal frame 2.
  • the various risers 4, that is to say the front risers 11, the intermediate risers 12 and the tall risers 13, are placed between two adjacent floor support gantries 7 as shown in FIGS. 2 and 5.
  • the front risers 11 and high 13 are mechanically fixed by known devices to the different gantries 7.
  • the intermediate risers 12 are maintained between the gantries 7 by means of cleats 28 and 29 as shown in FIG. 3.
  • Each bracket 17 of the gantry 7 comprises at least two upper cleats 28 and two lower cleats 29. These cleats 28 and 29 are integral with the gantry 7.
  • a high riser support 14 fits into the upright 30 of a floor support gantry 7 as shown in Figure 2. This support 14 holds the high riser 13 on the one hand and d on the other hand the rear railings 6 placed along the upper rear side of the platform 1.
  • Railings 5 and 6 are built in a traditional and regulatory manner. They are fixed to the metal frame 2 by traditional assembly means.
  • This metal frame structure 2 forming a staircase whose stepped platform 1 has a floor 3 on each step.
  • This floor 3 consists of boards whose sides are perpendicular to each other.
  • the floorboards 3 are placed on the upper part of a first riser 4 on the one hand and on the lower part of a second riser 4 on the other regardless of the type of riser.
  • the tiered grandstand 1 is installed in a certain order to facilitate assembly. One proceeds by successively mounting the spans forming grandstand 1, starting with the mounting of the right-hand span as shown in FIG. 2. The mounting of the span is carried out stage by stage. The need to assemble the first span in the order which will be described is imposed by the various self-locking systems between gantry supports for the floor 7, gantry gantries 8 and bracing frames 10.
  • the distance between these two gantries depends on the length of the risers 4. In a preferred embodiment, this spacing is about two meters. The lower part of each of these two gantries is in contact with the ground by support legs 9.
  • the front riser 33 is then placed between the two floor support gantries 31 and 32.
  • the lower part 27 of the riser 33 is freely fixed to each of the ends of the gantry 31 and 32 by mechanical assembly means such as bolts for example .
  • the height gantry 34 of the first row is then placed behind the floor support gantry 31.
  • the assembly of these two gantries 31 and 34 is carried out by interlocking.
  • the height gantry 34 is in contact with the ground by means of a support leg 9.
  • a height gantry 35 is placed and fixed behind the floor support gantry 32 of the second row in the same manner as above.
  • the rear parts of the two gantry supports for floors 31 and 32 are joined together by a bracing frame 36, its fixing is also effected by fitting in the gantries 31 and 32.
  • a first rectangle is thus formed, the four sides of which are respectively the gantry 31, the gantry 32, the riser 33, and the frame 36.
  • the base was thus produced, in contact with the ground by the support legs 9, of the first span of the platform 1.
  • the assembly of this first span is completed by fitting the two high riser supports 50 and 51 into the rear parts of the gantries 47 and 48. These riser supports 50 and 51 also allow the assembly of the rear railing 52.
  • the installation of the grandstand 1 is continued by mounting the various risers 4 and the floors 3, starting with the low level of the grandstand 1.
  • the risers 4 and the floors 3 are mutually blocked by embedding the floors 3 between the risers 4.
  • each step which may consist of juxtaposed planks, are completely embedded between the risers 4 and the floor support gantries 7 this so as to protect against impact the four fields of the floor planks 3.
  • the sides of the planks are perpendicular to each other and square the metal frame 2, this ensures good stability and good rigidity at the step stand 1.
  • the intermediate riser 53 is therefore placed between the two floor support gantries 31 and 32. It is supported by the metal frame 2 by means of the cleats 28 and 29 integral with each gantry 31, 32. Then the floor 54 is fitted between the riser 33 and riser 53.
  • FIG. 3 shows us in detail an assembly of riser 4 and of floor 3. It is shown the gantry support of floor 32, the front riser 33, the intermediate riser 53 and the floor 54.
  • the middle part 55 of the riser 33 between the two parts of the S 26 and 27 is supported by two lower lugs 29 integral with the gantries 32 and 31.
  • the riser 33 is assembled to the two gantries 31 and 32 by fixing means 56 blocking it on the cleats 29.
  • the riser 33 is also sup carried by the upper cleats 28 integral with the gantries 31 and 32.
  • the lower part 23 of the riser 53 sits on two other lower lugs 29 integral with the gantries 31 and 32.
  • the upper part 22 of the riser 53 is supported by two other upper lugs 28 integral with the gantries 31 and 32.
  • the floorboards 54 between the risers 33 and 53 are placed on the upper part 22 of the riser 33 on the one hand and on the lower part 23 of the riser 53 on the other hand.
  • the floor 54 and the risers 33 and 53 block each other. Indeed, the lower part 23 of the riser 53 is blocked between the cleat 29 and the end 57 of the floor 54. In addition, the other end 58 of the board 54 blocks the riser 33 at its upper part 25.
  • the blocking by embedding the boards between the risers is favored by maintaining the risers by means of the cleats 28 and 29 secured to the gantries 31 and 32.
  • the floors 3 and the risers 4 are mutually blocked, moreover as shown in FIG. 5, they are immobilized in translation by the floor support gantries 7. In fact, the risers 4, whatever their type, are positioned between two 7 adjacent gantries. The floors 3 recessed between the risers 4 are also recessed between the gantries supporting the floors 7.
  • Figure 4 shows a side view of the embedding of a floor 3 between the intermediate risers 12 and high 13. The blocking is carried out in the same manner as described above but the upper part 22 of the high riser 13 is blocked by traditional mechanical fixing means integral with the upper riser support 14.
  • the laying of the floors is completed by alternately continuing the laying of the intermediate risers 12 then the laying of the floor 3, that is to say laying of the second intermediate riser 12, laying of the second floor 3, laying of the third intermediate riser 12, installation of the third floor 3, and so on until the installation of the last high riser 13 and the last floor 3.
  • the step gallery 1 thus installed has good stability and good rigidity.
  • seat elements are installed on the grandstand. These seat elements 59 or 60 are juxtaposed to each other and are fixed in the metal frame 2.
  • the removable step gallery has locking means so that the seat element is kept in the locked position by the adjacent seat.
  • the various floor support gantries 7 composing the metal frame 2 have several brackets 17 equidistant from each other. At the upper end 61 of these brackets 17, there is fixed, for example, by welding, a support plate 62 of the seat elements 60.
  • This support plate 62 can be constituted by a rectangular metal plate folded in the shape of a V as shown in Figure 3.
  • This support plate 62 comprises at least, on one side of the V, two female elements 63.
  • These female elements 63 are constituted by grooves of specific shape.
  • One of the ends 65 of the oblong opening 64 is terminated by a cylindrical orifice 66 tangent to one of the sides of the opening 64 and whose diameter is much greater than the width of the opening 64.
  • the two grooves 63, made in the support plate, are side by side, on the same part of the V, and their axes are parallel to the longitudinal axis of the support plate 62.
  • the seat element 60 is composed of wooden planks 67 so as to form a bench. At the ends of the wooden boards 67 are fixed, beneath these, two connecting plates 68 of the seat elements 60.
  • connection plate 68 can be constituted by a rectangular metal plate, folded in the shape of a V in the same way as the support plate 62. This connection plate 68 is moreover intended to come into contact on the support plate 62. On one of the sides of the V is fixed on the underside of the plate 68, a male element 69 being able to engage and slide in one of the two female elements 63 of the support plate 62.
  • These male elements are constituted by lugs comprising a head 70 and a body 71.
  • the head 70 of the lug 69 has an outside diameter smaller than that of the orifice 66 of the groove 63, the cylindrical body 71 of the lug 69 has a diameter slightly less than the width of the lumen 64 of the groove 63.
  • Each support plate 62 of the seat elements 60 is produced in such a way as to be able to receive the connection plates 68 of two adjacent seat elements 60 as shown in FIG. 4.
  • the seat element 74 is then fixed to the floor support gantries 7 because the head 70 of the lug 69 cannot pass through the lumen 64 of the groove 63, as shown in FIG. 4.
  • the inclined shape of the support plates 62 and the connecting plate 68 is such that the bench, by its weight and, by the spectators seated on the seat element 60, tends to remain blocked.
  • each connecting plate 68 of the adjacent seat elements 60 covers substantially half the width of the support plate 62 of the seat elements.
  • this second seat element 75 When this second seat element 75 is installed, it becomes impossible to dismantle the first seat element 74 installed. Indeed, the two benches are in contact by their face 72, and it is then impossible to move the first seat element 74 posed to the right. This seat element is held in the locked position by the adjacent seat mounted next to it.
  • step platform 1 between the different brackets 17 of the floor support gantries 7, and this works step by step, seat elements 60 whose assembly is carried out in the order mentioned above.
  • seat elements 60 whose assembly is carried out in the order mentioned above.
  • Each last seat element 60 mounted at the extreme right part of the grandstand is held in the locked position by padlocking means 73, as shown in FIG. 5, so that the latter seat element cannot move to the right.
  • the mounting of all these seat elements 60 contributes to maintaining the parallelism between the different gantries 7 adjacent to the said seat elements 60. As a result, the stability and the rigidity of the step stand 1 are very significantly improved.
  • these seat elements 60 can support plastic shells having the shape of an armchair, this increasing the comfort of the spectators.
  • the platform is dismantled in the reverse order to that just described for its assembly. Its disassembly is easily carried out and therefore the various constituents of this platform are recovered in a good condition allowing its subsequent reinstallation. rement.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Floor Finish (AREA)
  • Special Chairs (AREA)
  • Steps, Ramps, And Handrails (AREA)

Abstract

The grandstand with demountable steps (1), composed of a metal- framed structure (2) forming a stair-type framework, comprising a floor (3) on each step and risers (4) supported by the metal frame (2), is characterised in that the risers (4) and the floors (3) are blocked mutually by fitting the floors (3) between the risers (4). The grandstand with demountable steps, intended in particular to receive spectators, will be used at public events. <IMAGE>

Description

La présente invention est relative à une tribune à gradins démontable. Elle est notamment destinée à recevoir des spectateurs lors de manifestations publiques.The present invention relates to a removable step gallery. It is intended in particular to receive spectators at public events.

Actuellement, lors de manifestations publiques périodiques, on installe des tribunes à gradins destinées à recevoir le public. A l'issue de la manifestation, les tribunes sont démontées et récupérées pour servir lors de manifestations ultérieures.Currently, during periodic public events, stands are stepped to receive the public. At the end of the event, the stands are dismantled and recovered to be used for subsequent events.

On connaît un tel type de tribunes ayant une structure solide en tubes réunis les uns aux autres. Sur cette structure formant un bâti en escalier est fixé un plancher par des moyens de fixations tels que clous ou boulons. Sur ce plancher, on vient poser des sièges un à un, puis on réunit ces sièges l'un à l'autre et, ensuite on les fixe sur le plancher. Lorsque la tribune est montée, on améliore sa rigidité en venant fixer des croisillons dans la structure métallique.Such a type of grandstand is known, having a solid structure made of tubes joined together. On this structure forming a staircase frame is fixed a floor by fixing means such as nails or bolts. On this floor, we just put seats one by one, then we join these seats together and then we fix them on the floor. When the platform is mounted, its rigidity is improved by fixing the cross-pieces in the metal structure.

On obtient alors une tribune rigide et stable mais dont le principal inconvénient est le temps de montage. En effet, la fixation des différents éléments entre-eux prend un temps assez important. Il en est de même lors du démontage.A rigid and stable platform is then obtained, the main drawback of which is the assembly time. Indeed, the fixing of the different elements between them takes a fairly long time. It is the same during disassembly.

Un autre inconvénient de ce type de tribunes et de nécessiter de nombreux moyens de fixations diverses. Au cours des différents montages et démontages, ces pièces se détériorent facilement et peuvent se perdre.Another drawback of this type of stands and of requiring numerous means of various fastenings. During the various assemblies and disassemblies, these parts deteriorate easily and can be lost.

Un autre inconvénient de ces tribunes est l'usure prématurée des planches formant le plancher. En effet, ces planches ne sont pas protégées contre les chocs.Another drawback of these stands is the premature wear of the boards forming the floor. Indeed, these boards are not protected against shocks.

Un autre inconvénient de ces tribunes est qu'il faut surdi- mensionner la structure et les planchers de manière à pouvoir fixer des sièges de toutes formes. De plus, les moyens de fixation de ces sièges détériorent le plancher d'une manière prématurée.Another drawback of these stands is that the structure and the floors have to be oversized so that seats of all shapes can be fixed. In addition, the means for fixing these seats deteriorate the floor prematurely.

En outre, la structure, en escalier, de la tribune ne possédant pas de contre-marches permet aux immondices de passer dans ces orifices et de se déposer sous la tribune.In addition, the staircase structure of the grandstand having no steps allows the rubbish to pass through these holes and settle under the grandstand.

Le but de la présente invention est de présenter une tribune à gradins démontable qui puisse facilement être montée et ensuite démontée tout en palliant aux différents inconvénients cités ci-dessus.The object of the present invention is to present a demountable platform which can easily be mounted and then dismantled while overcoming the various drawbacks mentioned above.

Un des buts de la présente invention est de présenter une tribune ayant une structure résistante lors des opérations de montage et de démontage.One of the aims of the present invention is to present a platform having a resistant structure during assembly and disassembly operations.

Un autre but-de la présente invention est de présenter une tribune à gradins démontable qui soit stable une fois montée par le fait qu'elle dispose des éléments de structure améliorant sa rigidité.Another object of the present invention is to present a removable step platform which is stable once mounted by the fact that it has structural elements improving its rigidity.

D'autres buts et avantages de la présente invention apparat- tront au cours de la description qui va suivre qui n'est cependant donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will emerge during the description which follows, which is however only given for information and which is not intended to limit it.

La tribune à gradins démontable, notamment destinée à recevoir des spectateurs lors de manifestations publiques, composée d'une structure en charpente métallique, formant un bâti en escalier, comportant un plancher sur chaque marche et des contre-marches supportées dans la charpente métallique, est caractérisée par le fait que les contre-marches et les planches se bloquent mutuellement par encastrement des planchers entre les contre-marches.The demountable grandstand, in particular intended to receive spectators at public events, composed of a metal frame structure, forming a staircase frame, comprising a floor on each step and risers supported in the metal frame, is characterized by the fact that the risers and the boards block each other by embedding the floors between the risers.

L'invention sera mieux comprise à la lecture de la description ci-dessous accompagnée de dessins en annexe parmi lesquels :

  • - la figure 1 représente une vue de profil d'une tribune à gradins réalisée selon l'invention,
  • - la figure 2 représente schématiquement, en perspective, dans un mode préférentiel de réalisation, les différentes pièces de constitution d'une travée composant une tribune à gradins selon l'invention,
  • - la figure 3 représente, vue en perspective, l'encastrement des planchers entre les contre-marches, selon la présente invention,
  • - la figure 4 représente, vue de côté, dans un mode de réalisation préférentiel, un détail de la tribune selon la présente invention montrant la disposition des planchers et des contre-marches dans la structure métallique,
  • - la figure 5 représente, vue de face, dans un mode de réalisation préférentiel, un détail de la tribune selon l'invention montrant la disposition des planchers et des contre-marches dans la structure métallique,
  • - la figure 6 représente, vue en perspective, dans un mode de réalisation préférentiel de la présente invention, les moyens de blocage des éléments sièges sur la tribune,
  • - la figure 7 représente, vue en perspective, dans un mode de réalisation préférentiel illustré figure 3, deux éléments sièges adjacents bloqués en position verrouillée,
  • - la figure 8 représente, vue de dessus, la tribune selon la présente invention, en montrant la disposition des éléments sièges.
The invention will be better understood on reading the description below accompanied by attached drawings, among which:
  • FIG. 1 represents a profile view of a tiered grandstand produced according to the invention,
  • FIG. 2 schematically represents, in perspective, in a preferred embodiment, the various pieces of constitution of a span composing a step platform according to the invention,
  • FIG. 3 represents, in perspective view, the embedding of the floors between the risers, according to the present invention,
  • FIG. 4 represents, seen from the side, in a preferred embodiment, a detail of the platform according to the present invention showing the arrangement of the floors and risers in the metal structure,
  • FIG. 5 represents, front view, in a preferred embodiment, a detail of the tribune according to the invention showing the arrangement of the floors and the steps in the metal structure,
  • FIG. 6 represents, in perspective view, in a preferred embodiment of the present invention, the means for blocking the seat elements on the platform,
  • FIG. 7 represents, in perspective view, in a preferred embodiment illustrated in FIG. 3, two adjacent seat elements locked in the locked position,
  • - Figure 8 shows, top view, the platform according to the present invention, showing the arrangement of the seat elements.

L'invention vise à présenter une tribune à gradins démontable qui puisse être facilement installée et qui présente une excellente stabilité.The invention aims to present a removable step gallery which can be easily installed and which has excellent stability.

La figure 1 montre l'aspect général de la tribune réalisée suivant la présente invention. La tribune à gradins démontable 1 est composée d'une structure en charpente métallique 2, formant un bâti en escalier, comportant un plancher 3 sur chaque marche et des contre- marches 4 supportées par la charpente métallique 2. Des garde-corps 5 et 6 sont placés le long des côtés latéraux et sur l'arrière de la tribune 1 de façon à éviter les chutes.Figure 1 shows the general appearance of the tribune made according to the present invention. The demountable grandstand 1 is composed of a metal frame structure 2, forming a staircase frame, comprising a floor 3 on each step and risers 4 supported by the metal frame 2. Guardrails 5 and 6 are placed along the lateral sides and on the back of grandstand 1 so as to avoid falls.

La charpente métallique 2 est composée de plusieurs pièces mécano-soudées, comme représentée à la figure 2 qui s'assemblent entre- elles par des moyens de fixation mécaniques tels que des emboîtements par exemple. Elle comprend essentiellement :

  • - des portiques supports de planchers 7,
  • - des portiques de rehaut 8,
  • - des pieds supports 9,
  • - des cadres de contreventement 10,
  • - des contre-marches avant 11,
  • - des contre-marches intermédiaires 12,
  • - des contre-marches hautes 13,
  • - des supports de contre-marches hautes 14,
  • - des gardes-corps de côté 5,
  • - des gardes-corps arrière 6.
The metal frame 2 is made up of several mechanically welded parts, as shown in FIG. 2 which are assembled together by mechanical fixing means such as sockets for example. It essentially includes:
  • - floor support gantries 7,
  • - height gantries 8,
  • - support legs 9,
  • - bracing frames 10,
  • - front steps before 11,
  • - intermediate risers 12,
  • - high risers 13,
  • - high step supports 14,
  • - side rails 5,
  • - rear railings 6.

Le portique support de plancher 7 est constitué de tubes soudés les uns aux autres pour former un triangle rectangle dont la pente est celle de la tribune. Ce portique support de plancher 7 peut être renforcé en soudant un tube 15 formant la médiane du triangle. Sur le côté 16 de ce triangle sont soudées des potences 17 équidistantes les unes des autres. Ces potences 17 sont reliées les unes aux autres par des barres supports 18 qui forment les marches d'un escalier. Les potences 17 et les barres supports 18 sont positionnées de telle manière que les barres supports 18 sont parallèles au grand côté 19 du triangle formant le portique support de plancher 7.The floor support frame 7 consists of tubes welded to each other to form a right triangle whose slope is that of the platform. This floor support gantry 7 can be reinforced by welding a tube 15 forming the median of the triangle. On the side 16 of this triangle are welded brackets 17 equidistant from each other. These brackets 17 are connected to each other by support bars 18 which form the steps of a staircase. The brackets 17 and the support bars 18 are positioned in such a way that the support bars 18 are parallel to the long side 19 of the triangle forming the floor support gantry 7.

Les portiques de rehaut 8 sont constitués de tubes soudés les uns aux autres pour former un triangle rectangle dont la pente est la même que celle des portiques supports de planchers 7.The height gantries 8 consist of tubes welded to each other to form a right triangle whose slope is the same as that of the gantry supports 7.

Les portiques 7 et 8 sont pourvus de dispositifs d'assemblage permettant l'emboitement des portiques 7 sur les portiques 8 ou les portiques 8 entre-eux. Il est possible aussi d'emboiter ces portiques 7 et 8 dans des pieds supports 9.Gantry cranes 7 and 8 are fitted with mounting devices blocking allowing the interlocking of the gantries 7 on the gantries 8 or the gantries 8 between them. It is also possible to fit these gantries 7 and 8 into support legs 9.

Les pieds supports 9 sont destinés à supporter l'ensemble de la tribune 1. Ils sont composés d'une platine support 20 qui sera posée sur le sol, et d'un vérin 21 qui permettra un réglage en hauteur de manière à ce que tous les pieds supports soient en contact avec le sol quelle que soit sa planéité.The support legs 9 are intended to support the entire platform 1. They are composed of a support plate 20 which will be placed on the ground, and of a jack 21 which will allow an adjustment in height so that all the support feet are in contact with the ground whatever its flatness.

Les différents portiques 7 ou 8 sont reliés entre-eux pour former l'ossature de la tribune 1, par des cadres de contreventement 10. Ces cadres sont destinés à rigidifier l'ossature de la tribune 1. Ils sont composés de tubes soudés suivant une forme trapézoïdale comme le montre la figure 2. Ils possèdent des dispositifs de fixation par emboitement permettant leur liaison avec les différents portiques 7 et 8.The different gantries 7 or 8 are interconnected to form the framework of the platform 1, by bracing frames 10. These frames are intended to stiffen the framework of the platform 1. They are composed of tubes welded according to a trapezoidal shape as shown in figure 2. They have interlocking fixing devices allowing their connection with the different gantries 7 and 8.

Les contremarches intermédiaires 12 sont constituées de poutrelles métalliques dont la section est en forme de C comme le montrent les figures 2 et 3. Les contremarches intermédiaires 12 présentent chacune une partie supérieure 22 et une partie inférieure 23 reliées entre- elles par une âme 24. L'extrémité 25 de la partie supérieure 22 de la contremarche 12 est repliée vers l'extérieur en équerre.The intermediate risers 12 are made up of metal beams, the cross section of which is C-shaped as shown in FIGS. 2 and 3. The intermediate risers 12 each have an upper part 22 and a lower part 23 interconnected by a core 24. The end 25 of the upper part 22 of the riser 12 is folded outwards at right angles.

Au niveau du sol, les contremarches avant 11 sont composées d'une poutrelle métallique en forme de S comme le montrent les figures 2 et 3 la boucle supérieure 26 du S a la même forme que la contremarche intermédiaire 12. La boucle inférieure 27 du S recourbée dans l'autre sens permet sa fixation par des moyens mécaniques à la charpente métallique 2.At ground level, the front risers 11 are composed of an S-shaped metal beam as shown in Figures 2 and 3 the upper loop 26 of the S has the same shape as the intermediate riser 12. The lower loop 27 of the S bent in the other direction allows it to be fixed by mechanical means to the metal frame 2.

Au niveau supérieur de la tribune, la contremarche est une contremarche haute 13. Elles sont similaires aux contremarches intermédiaires 12 mais elles sont fixées par des moyens mécaniques dans la charpente métallique 2.At the upper level of the grandstand, the riser is a high riser 13. They are similar to the intermediate risers 12 but they are fixed by mechanical means in the metal frame 2.

Les différentes contremarches 4 c'est-à-dire les contremarches avant 11, les contremarches intermédiaires 12 et les contremarches hautes 13, sont placées entre deux portiques supports de planchers 7 adjacents tels que représentés aux figures 2 et 5. Les contremarches avant 11 et hautes 13 sont fixées mécaniquement par des dispositifs connus aux différents portiques 7. Par contre, les contremarches intermédiaires 12 sont maintenues entre les portiques 7 au moyen de taquets 28 et 29 tels que le montre la figure 3. Chaque potence 17 du portique 7 comporte au moins deux taquets supérieurs 28 et deux taquets inférieurs 29. Ces taquets 28 et 29 sont solidaires du portique 7.The various risers 4, that is to say the front risers 11, the intermediate risers 12 and the tall risers 13, are placed between two adjacent floor support gantries 7 as shown in FIGS. 2 and 5. The front risers 11 and high 13 are mechanically fixed by known devices to the different gantries 7. On the other hand, the intermediate risers 12 are maintained between the gantries 7 by means of cleats 28 and 29 as shown in FIG. 3. Each bracket 17 of the gantry 7 comprises at least two upper cleats 28 and two lower cleats 29. These cleats 28 and 29 are integral with the gantry 7.

Au niveau supérieur de la tribune, un support de contremarche haute 14 vient s'emboîter dans le montant 30 d'un portique support de plancher 7 comme le montre la figure 2. Ce support 14 maintient d'une part la contremarche haute 13 et d'autre part les gardes-corps arrière 6 placés le long du côté supérieur arrière de la tribune 1.At the upper level of the grandstand, a high riser support 14 fits into the upright 30 of a floor support gantry 7 as shown in Figure 2. This support 14 holds the high riser 13 on the one hand and d on the other hand the rear railings 6 placed along the upper rear side of the platform 1.

Les garde-corps 5 et 6 sont construits de manière traditionnelle et règlementaires. Ils sont fixés sur la charpente métallique 2 par des moyens d'assemblage traditionnels.Railings 5 and 6 are built in a traditional and regulatory manner. They are fixed to the metal frame 2 by traditional assembly means.

Cette structure en charpente métallique 2 formant un bâti en escalier dont la tribune à gradins 1 comporte un plancher 3 sur chaque marche. Ce plancher 3 est constitué de planches dont les côtés sont perpendiculaires entre-eux. Sur chaque marche, les planches du plancher 3 sont posées sur la partie supérieure d'une première contremarche 4 d'une part et sur la partie inférieure d'une deuxième contremarche 4 d'autre part quel que soit le type de contremarche.This metal frame structure 2 forming a staircase whose stepped platform 1 has a floor 3 on each step. This floor 3 consists of boards whose sides are perpendicular to each other. On each step, the floorboards 3 are placed on the upper part of a first riser 4 on the one hand and on the lower part of a second riser 4 on the other regardless of the type of riser.

L'installation de la tribune à gradins 1 s'effectue dans un certain ordre afin de faciliter le montage. On procède en montant successivement les travées formant la tribune 1 en commençant par le montage de la travée de droite tel que le montre la figure 2. Le montage de la travée s'effectue étage par étage. La nécessité de monter la première travée dans l'ordre qui va être décrit est imposée par les différents systèmes d'auto-blocage entre des portiques supports de plancher 7, des portiques de rehaut 8 et des cadres de contreventement 10.The tiered grandstand 1 is installed in a certain order to facilitate assembly. One proceeds by successively mounting the spans forming grandstand 1, starting with the mounting of the right-hand span as shown in FIG. 2. The mounting of the span is carried out stage by stage. The need to assemble the first span in the order which will be described is imposed by the various self-locking systems between gantry supports for the floor 7, gantry gantries 8 and bracing frames 10.

On commence par disposer le portique support de planchers 31 de la première rangée puis on dispose parallèlement à celui-ci un portique support de plancher 32 de la deuxième rangée, l'entr'axe entre ces deux portiques dépend de la longueur des contremarches 4. Dans un mode de réalisation préférentiel, cet entr'axe est d'environ deux mètres. La partie inférieure de chacun de ces deux portiques est en contact avec le sol par des pieds supports 9.We start by placing the floor support gantry 31 of the first row and then we have a floor support gantry 32 of the second row parallel to it, the distance between these two gantries depends on the length of the risers 4. In a preferred embodiment, this spacing is about two meters. The lower part of each of these two gantries is in contact with the ground by support legs 9.

On place ensuite la contremarche avant 33 entre les deux portiques supports de planchers 31 et 32. La partie inférieure 27 de la contremarche 33 est fixée librement à chacune des extrémités du portique 31 et 32 par des moyens d'assemblage mécaniques tels que boulons par exemple.The front riser 33 is then placed between the two floor support gantries 31 and 32. The lower part 27 of the riser 33 is freely fixed to each of the ends of the gantry 31 and 32 by mechanical assembly means such as bolts for example .

On place ensuite le portique de rehaut 34 de la première rangée derrière le portique support de plancher 31. L'assemblage de ces deux portiques 31 et 34 s'effectue par emboîtement. Le portique de rehaut 34 est en contact avec le sol au moyen d'un pied support 9. Ensuite, on place et on fixe un portique de rehaut 35 derrière le portique support de plancher 32 de la deuxième rangée de la même manière que précédemment.The height gantry 34 of the first row is then placed behind the floor support gantry 31. The assembly of these two gantries 31 and 34 is carried out by interlocking. The height gantry 34 is in contact with the ground by means of a support leg 9. Next, a height gantry 35 is placed and fixed behind the floor support gantry 32 of the second row in the same manner as above.

On réunit les parties arrière des deux portiques supports de planchers 31 et 32 par un cadre de contreventement 36, sa fixation s'effectue elle aussi par emboîtement dans les portiques 31 et 32. On a ainsi formé un premier rectangle dont les quatre côtés sont respectivement le portique 31, le portique 32, la contremarche 33, et le cadre 36.The rear parts of the two gantry supports for floors 31 and 32 are joined together by a bracing frame 36, its fixing is also effected by fitting in the gantries 31 and 32. A first rectangle is thus formed, the four sides of which are respectively the gantry 31, the gantry 32, the riser 33, and the frame 36.

On continue le montage de la première travée, en assemblant dans la première rangée un portique de rehaut 37 derrière le portique de rehaut 34, puis en réunissant les parties arrière des portiques de rehaut 34 de la première rangée et du portique de rehaut 35 de la deuxième rangée au moyen d'un cadre de contreventement 38. On assemble un portique de rehaut 39 dans la deuxième rangée au portique de rehaut 35 puis on réunit les deux parties arrière des portiques de rehaut 37 et 39 au moyen d'un cadre de contreventement 40.We continue the assembly of the first span, by assembling in the first row an elevation gantry 37 behind the elevation gantry 34, then by joining the rear parts of the elevation gantries 34 of the first row and the elevation gantry 35 of the second row by means of a bracing frame 38. An elevation gantry 39 is assembled in the second row to the gantry gantry 35 and then the two rear parts of the elevation gantries 37 and 39 are joined together by means of a bracing frame 40.

On a ainsi réalisé la base, en contact avec le sol par les pieds supports 9, de la première travée de la tribune 1.The base was thus produced, in contact with the ground by the support legs 9, of the first span of the platform 1.

On continue le montage de la manière suivante :

  • - montage du portique support de plancher 41 au-dessus du portique de rehaut 34,
  • - montage du portique de rehaut 42 au-dessus du portique de rehaut 37 dans le même sens, de cette manière les portiques 37 et 42 ainsi assemblés forment un rectangle,
  • - montage du portique support de plancher 43 au-dessus du portique de rehaut 35,
  • - montage du cadre de contreventement 44 entre les portiques 41 et 43,
  • - montage du portique de rehaut 45 au-dessus du portique de rehaut 39 de manière à ce que le portique de rehaut 39 et 45 forme un rectangle,
  • - montage du cadre de contreventement 46 entre les portiques 42 et 45,
  • - montage du portique support plancher 47 au-dessus du portique de rehaut 42,
  • - montage du portique support de plancher 48 au-dessus du portique de rehaut 45,
  • - montage du cadre de contreventement 49 entre les portiques 47 et 48.
We continue the assembly in the following way:
  • - mounting the floor support gantry 41 above the height gantry 34,
  • - mounting the lifting frame 42 above the lifting frame 37 in the same direction, in this way the frames 37 and 42 thus assembled form a rectangle,
  • - mounting the floor support gantry 43 above the height gantry 35,
  • - mounting the bracing frame 44 between the gantries 41 and 43,
  • - mounting the lifting frame 45 above the lifting frame 39 so that the lifting frame 39 and 45 form a rectangle,
  • - mounting the bracing frame 46 between the gantries 42 and 45,
  • - mounting of the floor support gantry 47 above the por highlight 42,
  • - mounting the floor support gantry 48 above the height gantry 45,
  • - mounting of the bracing frame 49 between the gantries 47 and 48.

On termine l'assemblage de cette première travée en emboîtant dans les parties arrière des portiques 47 et 48 les deux supports de contremarches hautes 50 et 51. Ces supports de contremarches 50 et 51 permettent aussi l'assemblage du garde-corps arrière 52.The assembly of this first span is completed by fitting the two high riser supports 50 and 51 into the rear parts of the gantries 47 and 48. These riser supports 50 and 51 also allow the assembly of the rear railing 52.

Ensuite, on règle l'équerrage de cette première travée, et on bloque la contremarche avant 33 et on règle le niveau de la travée au moyen des vérins 21 des pieds supports 9.Then, the squaring of this first span is adjusted, and the front riser 33 is blocked and the level of the span is adjusted by means of the jacks 21 of the support legs 9.

Puis, on continue l'installation de la tribune 1 par le montage des différentes contremarches 4 et des planchers 3 en commençant par le niveau bas de la tribune 1. Les contremarches 4 et les planchers 3 se bloquent mutuellement par encastrement des planchers 3 entre les contremarches 4.Then, the installation of the grandstand 1 is continued by mounting the various risers 4 and the floors 3, starting with the low level of the grandstand 1. The risers 4 and the floors 3 are mutually blocked by embedding the floors 3 between the risers 4.

Les planchers 3 de chaque marche qui peuvent être constitués de planches juxtaposées, sont complètement encastrés entre les contre- marches 4 et les portiques supports de plancher 7 ceci de manière à protéger contre les chocs les quatre champs des planches de planchers 3. De plus, les côtés des planches sont perpendiculaires entre-eux et équerrent la charpente métallique 2, ceci assure une bonne stabilité et une bonne rigidité à la tribune à gradins 1.The floors 3 of each step, which may consist of juxtaposed planks, are completely embedded between the risers 4 and the floor support gantries 7 this so as to protect against impact the four fields of the floor planks 3. In addition, the sides of the planks are perpendicular to each other and square the metal frame 2, this ensures good stability and good rigidity at the step stand 1.

On place donc la contremarche intermédiaire 53 entre les deux portiques supports de planchers 31 et 32. Elle est supportée par la charpente métallique 2 au moyen des taquets 28 et 29 solidaires de chaque portique 31, 32. Puis on vient encastrer le plancher 54 entre la contremarche 33 et la contremarche 53.The intermediate riser 53 is therefore placed between the two floor support gantries 31 and 32. It is supported by the metal frame 2 by means of the cleats 28 and 29 integral with each gantry 31, 32. Then the floor 54 is fitted between the riser 33 and riser 53.

La figure 3 nous montre en détail un montage de contremarche 4 et de plancher 3. Il est représenté le portique support de plancher 32, la contremarche avant 33, la contremarche intermédiaire 53 et le plancher 54.FIG. 3 shows us in detail an assembly of riser 4 and of floor 3. It is shown the gantry support of floor 32, the front riser 33, the intermediate riser 53 and the floor 54.

La partie médiane 55 de la contremarche 33 comprise entre les deux parties du S 26 et 27, est supportée par deux taquets inférieurs 29 solidaires des portiques 32 et 31. La contremarche 33 est assemblée aux deux portiques 31 et 32 par des moyens de fixation 56 la bloquant sur les taquets 29. En outre, la contremarche 33 est aussi supportée par les taquets supérieurs 28 solidaires des portiques 31 et 32.The middle part 55 of the riser 33 between the two parts of the S 26 and 27 is supported by two lower lugs 29 integral with the gantries 32 and 31. The riser 33 is assembled to the two gantries 31 and 32 by fixing means 56 blocking it on the cleats 29. In addition, the riser 33 is also sup carried by the upper cleats 28 integral with the gantries 31 and 32.

La partie inférieure 23 de la contremarche 53 est assise sur deux autres taquets inférieurs 29 solidaires des portiques 31 et 32. La partie supérieure 22 de la contremarche 53 est supportée par deux autres taquets supérieurs 28 solidaires des portiques 31 et 32.The lower part 23 of the riser 53 sits on two other lower lugs 29 integral with the gantries 31 and 32. The upper part 22 of the riser 53 is supported by two other upper lugs 28 integral with the gantries 31 and 32.

Les planches du plancher 54 comprises entre les contremarches 33 et 53, sont posées sur la partie supérieure 22 de la contremarche 33 d'une part et sur la partie inférieure 23 de la contremarche 53 d'autre part.The floorboards 54 between the risers 33 and 53 are placed on the upper part 22 of the riser 33 on the one hand and on the lower part 23 of the riser 53 on the other hand.

Le plancher 54 et les contremarches 33 et 53 se bloquent mutuellement. En effet, la partie inférieure 23 de la contremarche 53 est bloquée entre le taquet 29 et l'extrémité 57 du plancher 54. De plus, l'autre extrémité 58 de la planche 54 bloque la contremarche 33 à sa partie supérieure 25. Le blocage par encastrement des planches entre les contremarches est favorisé par le maintien des contremarches au moyen des taquets 28 et 29 solidaires des portiques 31 et 32.The floor 54 and the risers 33 and 53 block each other. Indeed, the lower part 23 of the riser 53 is blocked between the cleat 29 and the end 57 of the floor 54. In addition, the other end 58 of the board 54 blocks the riser 33 at its upper part 25. The blocking by embedding the boards between the risers is favored by maintaining the risers by means of the cleats 28 and 29 secured to the gantries 31 and 32.

Les planchers 3 et les contremarches 4 sont bloqués mutuellement, de plus comme le montre la figure 5, ils sont immobilisés en translation par les portiques supports de planchers 7. En effet, les contremarches 4, quel que soit leur type, sont positionnées entre deux portiques 7 adjacents. Les planchers 3 encastrés entre les contremarches 4 sont aussi encastrés entre les portiques supports de planchers 7.The floors 3 and the risers 4 are mutually blocked, moreover as shown in FIG. 5, they are immobilized in translation by the floor support gantries 7. In fact, the risers 4, whatever their type, are positioned between two 7 adjacent gantries. The floors 3 recessed between the risers 4 are also recessed between the gantries supporting the floors 7.

La figure 4 montre une vue de profil de l'encastrement d'un plancher d'étage 3 entre les contremarches intermédiaires 12 et haute 13. Le blocage s'effectue de la même manière que décrit précédemment mais la partie supérieure 22 de la contremarche haute 13 est bloquée par des moyens de fixation mécaniques traditionnels solidaires du support de contremarche haute 14.Figure 4 shows a side view of the embedding of a floor 3 between the intermediate risers 12 and high 13. The blocking is carried out in the same manner as described above but the upper part 22 of the high riser 13 is blocked by traditional mechanical fixing means integral with the upper riser support 14.

On complète la pose des planchers en continuant alternativement la pose des contremarches intermédiaires 12 puis la pose du plancher 3 c'est-à-dire pose de la deuxième contremarche intermédiaire 12, pose du deuxième plancher 3, pose de la troisième contremarche intermédiaire 12, pose du troisième plancher 3, et ainsi de suite jusqu'à la pose de la dernière contremarche haute 13 et du dernier plancher 3.The laying of the floors is completed by alternately continuing the laying of the intermediate risers 12 then the laying of the floor 3, that is to say laying of the second intermediate riser 12, laying of the second floor 3, laying of the third intermediate riser 12, installation of the third floor 3, and so on until the installation of the last high riser 13 and the last floor 3.

On a ainsi réalisé le montage de la première travée, étage par étage, de la tribune à gradins 1. On continuera le montage des travées suivantes étage par étage, par contre, il ne sera plus impératif de monter les portiques de rehaut 8 avant les cadres de contreventement 10 entre les portiques supports de planchers 7. On pourra donc procéder de la manière suivante :

  • - montage des deux portiques supports de planchers 7 adjacents,
  • - montage d'un cadre de contreventement 10 réunissant les parties arrière de ces deux portiques,
  • - montage des deux portiques de rehaut 8 adjacents,
  • - montage d'un cadre de contreventement 10 réunissant les deux parties arrière de ces deux portiques, et ainsi de suite jusqu'au montage du garde-corps arrière 6.
We thus carried out the assembly of the first span, stage by stage, of the platform with steps 1. We will continue the assembly of the following spans stage by stage, on the other hand, it will no longer be imperative to assemble the porticoes of height 8 before the bracing frames 10 between the gantries supporting the floors 7. We can therefore proceed as follows:
  • - mounting of the two gantry supports for adjacent floors 7,
  • mounting of a bracing frame 10 uniting the rear parts of these two gantries,
  • - mounting of the two adjacent lifting gantries 8,
  • - mounting of a bracing frame 10 joining the two rear parts of these two gantries, and so on until the rear railing 6 is mounted.

La tribune à gradins 1 ainsi installée présente une bonne stabilité et une bonne rigidité.The step gallery 1 thus installed has good stability and good rigidity.

Pour augmenter la rigidité et la stabilité de la tribune à gradins démontable 1, ainsi que pour améliorer le confort des spectateurs, on installe des éléments sièges sur la tribune. Ces éléments sièges 59 ou 60 sont juxtaposés l'un à l'autre et sont fixés dans la charpente métallique 2.To increase the rigidity and stability of the demountable grandstand 1, as well as to improve the comfort of spectators, seat elements are installed on the grandstand. These seat elements 59 or 60 are juxtaposed to each other and are fixed in the metal frame 2.

Ces éléments sièges 59 ou 60 doivent être facilement fixés lors de l'installation de la tribune 1, sur la charpente métallique 2, par des moyens de blocage efficaces. Ces moyens de blocage doivent aussi empêcher le démontage des éléments sièges pendant l'utilisation de la tribune.These seat elements 59 or 60 must be easily fixed during the installation of the platform 1, on the metal frame 2, by effective locking means. These blocking means must also prevent the dismantling of the seat elements during the use of the grandstand.

Selon la présente invention, la tribune à gradins démontable présente des moyens de blocage pour que l'élément siège soit maintenu en position verrouillé par le siège adjacent.According to the present invention, the removable step gallery has locking means so that the seat element is kept in the locked position by the adjacent seat.

Les différents portiques supports de planchers 7 composant la charpente métallique 2, présentent plusieurs potences 17 équidistantes les unes des autres. A l'extrémité supérieure 61 de ces potences 17, on vient fixer, par exemple, par soudure, un plat support 62 des ê- léments sièges 60. Ce plat support 62 peut être constitué par un plat métallique rectangulaire plié en forme de V comme le montre la figure 3.The various floor support gantries 7 composing the metal frame 2, have several brackets 17 equidistant from each other. At the upper end 61 of these brackets 17, there is fixed, for example, by welding, a support plate 62 of the seat elements 60. This support plate 62 can be constituted by a rectangular metal plate folded in the shape of a V as shown in Figure 3.

Ce plat support 62 comporte au moins, sur un des côtés du V, deux éléments femelles 63. Ces éléments femelles 63 sont constitués par des rainures de forme spécifique. Ces rainures 63 créées dans le plat support 62 des éléments sièges 60, sont constituées d'une lumière oblongue 64 dont la longueur est beaucoup plus grande que la largeur. Une des extrémités 65 de la lumière oblongue 64 est terminée par un orifice cylindrique 66 tangent à un des côtés de la lumière 64 et dont le diamètre est largement supérieur à la largeur de la lumière 64.This support plate 62 comprises at least, on one side of the V, two female elements 63. These female elements 63 are constituted by grooves of specific shape. These grooves 63 created in the support plate 62 of the seat elements 60, consist of an oblong slot 64 whose length is much greater than the width. One of the ends 65 of the oblong opening 64 is terminated by a cylindrical orifice 66 tangent to one of the sides of the opening 64 and whose diameter is much greater than the width of the opening 64.

Les deux rainures 63, faites dans le plat support, sont côte à côte, sur la même partie du V, et leurs axes sont parallèles à l'axe longitudinal du plat support 62.The two grooves 63, made in the support plate, are side by side, on the same part of the V, and their axes are parallel to the longitudinal axis of the support plate 62.

Selon un mode de réalisation préférentiel, l'élément siège 60 est composé de planches de bois 67 de manière à former un banc. Aux extrémités des planches de bois 67 sont fixés, sous celles-ci, deux plats de liaison 68 des éléments sièges 60.According to a preferred embodiment, the seat element 60 is composed of wooden planks 67 so as to form a bench. At the ends of the wooden boards 67 are fixed, beneath these, two connecting plates 68 of the seat elements 60.

Ce plat de liaison 68 peut être constitué par un plat métallique rectangulaire, plié en forme de V de la même manière que le plat support 62. Ce plat de liaison 68 est d'ailleurs destiné à venir en contact sur le plat support 62. Sur un des côtés du V est fixé sur la face inférieure du plat 68, un élément mâle 69 pouvant s'engager et coulisser dans un des deux éléments femelles 63 du plat support 62.This connection plate 68 can be constituted by a rectangular metal plate, folded in the shape of a V in the same way as the support plate 62. This connection plate 68 is moreover intended to come into contact on the support plate 62. On one of the sides of the V is fixed on the underside of the plate 68, a male element 69 being able to engage and slide in one of the two female elements 63 of the support plate 62.

Ces éléments mâles sont constitués par des ergots comprenant une tête 70 et un corps 71. La tête 70 de l'ergot 69 a un diamètre extérieur inférieur à celui de l'orifice 66 de la rainure 63, le corps cylindrique 71 de l'ergot 69 a un diamètre légèrement inférieur à la largeur de la lumière 64 de la rainure 63.These male elements are constituted by lugs comprising a head 70 and a body 71. The head 70 of the lug 69 has an outside diameter smaller than that of the orifice 66 of the groove 63, the cylindrical body 71 of the lug 69 has a diameter slightly less than the width of the lumen 64 of the groove 63.

Chaque plat support 62 des éléments sièges 60 est réalisé de telle manière à pouvoir recevoir les plats de liaison 68 de deux éléments sièges 60 adjacents comme le montre la figure 4.Each support plate 62 of the seat elements 60 is produced in such a way as to be able to receive the connection plates 68 of two adjacent seat elements 60 as shown in FIG. 4.

Le montage des éléments sièges 60 sur les portiques supports de planchers 7 doit s'effectuer dans un ordre déterminé suivant le positionnement des rainures 63. Comme représenté aux figures 3, 4 et 5, le montage doit s'effectuer en commençant par l'élément siège 74 se trouvant à gauche. On procède de la façon suivante :

  • - on fait pénétrer l'ergot 69 dans l'orifice 66 de la rainure 63,
  • - on déplace l'élément siège 74 vers la gauche de manière à faire buter le corps 71 de l'ergot 69 sur le côté de la lumière oblongue 64 constituant la rainure 63,
  • - puis, on ramère l'élément siège 74 sur l'avant de manière. à engager le corps 71 de l'ergot 69 dans la lumière oblongue 64 de la rainure 63.
The mounting of the seat elements 60 on the floor support gantries 7 must be carried out in a determined order according to the positioning of the grooves 63. As shown in Figures 3, 4 and 5, the assembly must be carried out starting with the element seat 74 located on the left. We proceed as follows:
  • the pin 69 is made to penetrate into the orifice 66 of the groove 63,
  • the seat element 74 is moved to the left so as to cause the body 71 of the lug 69 to abut on the side of the oblong opening 64 constituting the groove 63,
  • - Then, the seat element 74 is brought back to the front so. in engaging the body 71 of the lug 69 in the oblong opening 64 of the groove 63.

L'élément siège 74 est alors fixé aux portiques supports de planchers 7 car la tête 70 de l'ergot 69 ne peut pas passer à travers la lumière 64 de la rainure 63, comme représenté à la figure 4. La forme inclinée des plats supports 62 et du plat de liaison 68 est telle que le banc, de par son poids et, de par les spectateurs assis sur l'élément siège 60, a tendance à rester bloqué.The seat element 74 is then fixed to the floor support gantries 7 because the head 70 of the lug 69 cannot pass through the lumen 64 of the groove 63, as shown in FIG. 4. The inclined shape of the support plates 62 and the connecting plate 68 is such that the bench, by its weight and, by the spectators seated on the seat element 60, tends to remain blocked.

On vient alors poser un autre élément siège 75 à la droite du premier élément siège 74 posé de la même manière que décrit ci-dessus.We then place another seat element 75 to the right of the first seat element 74 placed in the same manner as described above.

Lorsque deux éléments sièges 60 adjacents, tels que les éléments sièges 74 et 75 des figures 4 et 5, sont placés en contact, tel que représenté à la figure 4, l'entr'axe des rainures 63 est égal à l'entr'axe entre les deux ergots 69 des deux éléments sièges 60 adjacents. Cet entr'axe est représenté à la figure 4 par la côte X. Chaque plat de liaison 68 des éléments sièges 60 adjacents recouvre sensiblement la moitié de la largeur du plat support 62 des éléments sièges.When two adjacent seat elements 60, such as the seat elements 74 and 75 of FIGS. 4 and 5, are placed in contact, as shown in FIG. 4, the center distance of the grooves 63 is equal to the center distance between the two pins 69 of the two adjacent seat elements 60. This spacing is shown in Figure 4 by the dimension X. Each connecting plate 68 of the adjacent seat elements 60 covers substantially half the width of the support plate 62 of the seat elements.

Lorsque ce deuxième élément siège 75 est posé, il devient impossible de démonter le premier élément siège 74 posé. En effet, les deux bancs sont en contact par leur face 72, et il est alors impossible de déplacer vers la droite le premier élément siège 74 posé. Cet élément siège est maintenu en position verrouillé par le siège adjacent monté à côté de lui.When this second seat element 75 is installed, it becomes impossible to dismantle the first seat element 74 installed. Indeed, the two benches are in contact by their face 72, and it is then impossible to move the first seat element 74 posed to the right. This seat element is held in the locked position by the adjacent seat mounted next to it.

On installe donc sur toute la tribune à gradins 1, entre les différentes potences 17 des portiques supports de planchers 7, et ceci marche par marche, des éléments sièges 60 dont le montage s'effectue dans l'ordre cité ci-dessus. Chaque dernier élément siège 60 monté à la partie extrême droite de la tribune est maintenu en position verrouillé par un moyen de cadenassage 73, tel que représenté figure 5, de manière à ce que ce dernier élément siège ne puisse pas se déplacer vers la droite.It therefore installs on the entire step platform 1, between the different brackets 17 of the floor support gantries 7, and this works step by step, seat elements 60 whose assembly is carried out in the order mentioned above. Each last seat element 60 mounted at the extreme right part of the grandstand is held in the locked position by padlocking means 73, as shown in FIG. 5, so that the latter seat element cannot move to the right.

Le montage de tous ces éléments sièges 60 contribue à maintenir le parallélisme entre les différents portiques 7 adjacents aux dits éléments sièges 60. De ce fait, on améliore très sensiblement la stabilité et la rigidité de la tribune à gradins 1.The mounting of all these seat elements 60 contributes to maintaining the parallelism between the different gantries 7 adjacent to the said seat elements 60. As a result, the stability and the rigidity of the step stand 1 are very significantly improved.

. Il est à noter que dans un mode de réalisation particulier des éléments sièges 60, ces éléments sièges 60 peuvent supporter des coques en matière plastique ayant forme de fauteuil, ceci augmentant le confort des spectateurs.. It should be noted that in a particular embodiment of the seat elements 60, these seat elements 60 can support plastic shells having the shape of an armchair, this increasing the comfort of the spectators.

On procède au démontage de la tribune dans l'ordre inverse de celui qui vient d'être décrit pour son montage. Son démontage est réalisé facilement et de ce fait on récupère les différents constituants de cette tribune dans un bon état autorisant sa réinstallation ultérieurement.The platform is dismantled in the reverse order to that just described for its assembly. Its disassembly is easily carried out and therefore the various constituents of this platform are recovered in a good condition allowing its subsequent reinstallation. rement.

La présente invention vient d'être décrite dans un mode de réalisation préférentiel, un autre mode de réalisation, à la portée de l'Homme de l'Art, aurait pu être adopté sans pour autant sortir du cadre de celle-ci.The present invention has just been described in a preferred embodiment, another embodiment, within the reach of ordinary skill in the art, could have been adopted without departing from the scope thereof.

Claims (20)

1. Tribune à gradins démontable (1), notamment destinée à recevoir des spectateurs lors de manifestations publiques, composée d'une structure en charpente métallique (2), formant un bâti en escalier, comportant un plancher (3) sur chaque marche et des contremarches (4) supportées par la charpente métallique (2), caractérisée par le fait que les contremarches (4) et les planchers (3) se bloquent mutuellement par encastrement des planchers (3) entre les contremarches (4).1. Demountable grandstand (1), in particular intended to receive spectators during public events, composed of a metal frame structure (2), forming a staircase frame, comprising a floor (3) on each step and risers (4) supported by the metal frame (2), characterized in that the risers (4) and the floors (3) are mutually blocked by embedding the floors (3) between the risers (4). 2. Tribune à gradins démontable selon la revendication 1, des planches juxtaposées composant le plancher (3) de chaque marche, caractérisée par le fait que tous les côtés des planches des planchers (3) sont perpendiculaires entre eux et équerrent la charpente métallique (2).2. Demountable grandstand according to claim 1, juxtaposed planks making up the floor (3) of each step, characterized in that all the sides of the floor planks (3) are perpendicular to each other and square the metal frame (2 ). 3. Tribune à gradins démontable selon la revendication 1, des planches juxtaposées composant le plancher (3) de chaque marche, un assemblage de différents portiques mécano-soudés (7) et (8) constituant la charpente métallique (2), caractérisée par le fait que les quatre chants des planches des planchers (3) sont complètement encastrés entre les contremarches (4) et les portiques (7) pour les protéger contre les chocs.3. Demountable grandstand according to claim 1, juxtaposed planks composing the floor (3) of each step, an assembly of different mechanically welded gantries (7) and (8) constituting the metal frame (2), characterized by the fact that the four edges of the floorboards (3) are completely embedded between the risers (4) and the gantries (7) to protect them from impact. 4. Tribune à gradins démontable selon la revendication 1, la contremarche (4) présentant une partie supérieure (22) et une partie inférieure (23) reliées entre elles par une âme (24), caractérisée par le fait que les planches des planchers (3), comprises entre deux contre- marches (4), sont posées sur la partie supérieure de la première contremarche d'une part et sur la partie inférieure de la deuxième contremarche d'autre part.4. Demountable grandstand according to claim 1, the riser (4) having an upper part (22) and a lower part (23) connected together by a core (24), characterized in that the floorboards ( 3), lying between two risers (4), are placed on the upper part of the first riser on the one hand and on the lower part of the second riser on the other hand. 5. Tribune à gradins démontable selon la revendication 4, caractérisée par le fait que la contremarche (4) est bloquée à sa partie supérieure (22) et à sa partie inférieure (23).5. Demountable grandstand according to claim 4, characterized in that the riser (4) is blocked at its upper part (22) and at its lower part (23). 6. Tribune à gradins démontable selon la revendication 2, un assemblage de différents portiques mécano-soudés (7) et (8) constituant la charpente métallique (2), caractérisée par le fait que les planches des planchers (3) et les contremarches sont immobilisées en translation par les portiques (7).6. Demountable grandstand according to claim 2, an assembly of different mechanically welded gantries (7) and (8) constituting the metal frame (2), characterized in that the floorboards (3) and the risers are immobilized in translation by the gantry cranes (7). 7. Tribune à gradins démontable selon la revendication 1, un assemblage de différents portiques mécano-soudés (7) et (8) comportant des taquets (28) et (29) constituant la charpente métallique (2), caractérisée par le fait que le blocage par encastrement des planchers (3) entre les contremarches (4) est favorisé par le maintien des contre- marches au moyen de taquets solidaires des portiques.7. Demountable grandstand according to claim 1, an assembly of different mechanically welded gantries (7) and (8) comprising cleats (28) and (29) constituting the metal frame (2), characterized in that the blocking by embedding of the floors (3) between the risers (4) is favored by the maintenance of the risers by means of cleats integral with the gantries. 8. Tribune à gradins démontable selon la revendication 7, la contremarche (4) présentant une partie supérieure (22) et une partie inférieure (23) reliées entre elles par une âme (24), des taquets inférieurs (29) et des taquets supérieurs (28) sont solidaires des portiques (7) adjacents à chaque contremarche (4), caractérisée par le fait que la partie inférieure de la dite contremarche est assise sur au moins deux taquets inférieurs et la partie supérieure de la dite contremarche est supportée par au moins deux taquets supérieurs.8. Demountable grandstand according to claim 7, the riser (4) having an upper part (22) and a lower part (23) connected together by a core (24), lower cleats (29) and upper cleats (28) are integral with the gantries (7) adjacent to each riser (4), characterized in that the lower part of the said riser is seated on at least two lower lugs and the upper part of the said riser is supported by at minus two upper cleats. 9. Tribune à gradins démontable selon la revendication 1, caractérisée par le fait que la contremarche avant (11), placée au niveau du sol, et la contremarche haute (13), placée au dernier niveau de la tribune, sont bloquées par des moyens de fixation mécaniques.9. Demountable grandstand according to claim 1, characterized in that the front riser (11), placed at ground level, and the high riser (13), placed at the last level of the grandstand, are blocked by means mechanical fixing. 10. Tribune à gradins démontable selon la revendication 1, comportant des éléments sièges (59 ou 60) juxtaposés fixés sur la charpente métallique (2), caractérisée par le fait qu'elle présente des moyens de blocage pour que l'élément siège soit maintenu en position verrouillé par l'élément siège adjacent.10. Demountable grandstand according to claim 1, comprising juxtaposed seat elements (59 or 60) fixed on the metal frame (2), characterized in that it has locking means so that the seat element is maintained in the locked position by the adjacent seat element. 11. Tribune à gradins démontable selon la revendication 10, caractérisée par le fait que les dits moyens de blocage sont constitués: - d'un plat support (62) des éléments sièges (60), solidaire de la charpente métallique (2), comportant au moins deux éléments femelles (63) et, - d'un plat de liaison (68) des éléments sièges (60), solidaire de l'élément siège (60), comportant au moins un élément màle (69) pouvant s'engager et coulisser dans un des deux éléments femelles (63). 11. Demountable grandstand according to claim 10, characterized in that the said blocking means consist of: a flat support (62) for the seat elements (60), integral with the metal frame (2), comprising at least two female elements (63) and, - A connecting plate (68) of the seat elements (60), integral with the seat element (60), comprising at least one male element (69) which can engage and slide in one of the two female elements (63 ). 12. Tribune à gradins démontable selon la revendication 11, caractérisée par le fait que le plat support (62) des éléments sièges (60) est destiné à recevoir les plats de liaison (68) de deux éléments sièges (60) adjacents.12. Demountable grandstand according to claim 11, characterized in that the support plate (62) of the seat elements (60) is intended to receive the connection plates (68) of two adjacent seat elements (60). 13. Tribune à gradins démontable selon la revendication 11, caractérisée par le fait que les deux plats de liaison (68) des éléments sièges (60) sont fixés aux extrémités de planches de bois (67) pour former un banc.13. Demountable grandstand according to claim 11, characterized in that the two connecting plates (68) of the seat elements (60) are fixed to the ends of wooden boards (67) to form a bench. 14. Tribune à gradins démontable selon la revendication 11, caractérisée par le fait que les éléments sièges (63) sont constitués par des rainures et que les éléments mâles (69) sont constitués par des ergots.14. Demountable grandstand according to claim 11, characterized by the fact that the seat elements (63) consist of grooves and that the male elements (69) consist of lugs. 15. Tribune à gradins démontable selon la revendication 14, caractérisée par le fait que les rainures (63), créées dans le plat support (62) des éléments sièges (60) sont constituées d'une lumière oblongue (64) dont l'une des extrémités (65) est terminée par un orifice cylindrique (66).15. Demountable grandstand according to claim 14, characterized in that the grooves (63) created in the support plate (62) of the seat elements (60) consist of an oblong slot (64), one of which ends (65) is terminated by a cylindrical orifice (66). 16. Tribune à gradins démontable selon la revendication 14, caractérisée par le fait que les deux rainures (63) faites dans le plat support (62), sont côte à côte et leurs axes sont parallèles à l'axe longitudinal du plat support (62).16. Demountable grandstand according to claim 14, characterized in that the two grooves (63) made in the support plate (62), are side by side and their axes are parallel to the longitudinal axis of the support plate (62 ). 17. Tribune à gradins démontable selon la revendication 14, caractérisée par le fait que l'ergot (69) solidaire de l'élément siège (60) est constitué d'une tête (70) dont le diamètre extérieur est inférieur à celui de l'orifice (66) de la rainure (63) et, d'un corps cylindrique (71) dont le diamètre est légèrement inférieur à la largeur de la lumière (64) de la rainure (63).17. Demountable grandstand according to claim 14, characterized in that the lug (69) integral with the seat element (60) consists of a head (70) whose outside diameter is less than that of l orifice (66) of the groove (63) and of a cylindrical body (71) whose diameter is slightly less than the width of the lumen (64) of the groove (63). 18. Tribune à gradins démontable selon la revendication 16, caractérisée par le fait que l'entr'axe des rainures (63) est égal à l'entr'axe des ergots (69) lorsque deux éléments sièges (60) adjacents sont placés en contact.18. Demountable grandstand according to claim 16, characterized in that the distance between the axes of the grooves (63) is equal to the distance between the axes of the pins (69) when two adjacent seat elements (60) are placed in contact. 19. Tribune à gradins démontable selon les revendications 11 et 18, caractérisée par le fait que le plat de liaison (68) des éléments sièges (60) recouvre sensiblement la moitié de la largeur du plat support (62) des éléments sièges (60).19. Demountable grandstand according to claims 11 and 18, characterized in that the connecting plate (68) of the seat elements (60) substantially covers half the width of the support plate (62) of the seat elements (60) . 20. Tribune à gradins démontable selon la revendication 13, un assemblage de différents portiques mécanosoudés constituant la charpente métallique (2), caractérisée par le fait que les éléments sièges (60) servent pour maintenir le parallélisme entre les portiques (7) adjacents aux dits éléments sièges (60).20. Demountable grandstand according to claim 13, an assembly of different mechanically welded gantries constituting the metal frame (2), characterized in that the seat elements (60) serve to maintain the parallelism between the gantries (7) adjacent to said seating elements (60).
EP84440041A 1984-08-10 1984-09-25 Grandstand with demountable steps Withdrawn EP0172293A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8413039 1984-08-10
FR8413039A FR2568923B1 (en) 1984-08-10 1984-08-10 SEAT ELEMENT FOR REMOVABLE STAND
FR8413040A FR2568924B1 (en) 1984-08-10 1984-08-13 REMOVABLE TRIBUNAL FLOORS AND COUNTERMARKS
FR8413040 1984-08-13

Publications (1)

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EP0172293A1 true EP0172293A1 (en) 1986-02-26

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EP84440041A Withdrawn EP0172293A1 (en) 1984-08-10 1984-09-25 Grandstand with demountable steps

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EP (1) EP0172293A1 (en)
FR (2) FR2568923B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291275A2 (en) * 1987-05-13 1988-11-17 GILLMAN &amp; SOAME LIMITED Staging

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809598A (en) * 1929-07-22 1931-06-09 Henry D Oberdorfer Steel bleacher
GB695774A (en) * 1952-05-16 1953-08-19 Percival Bernard Lewis Improvements in or relating to seating structures
FR1281784A (en) * 1961-03-01 1962-01-12 Improvements made to tubular scaffolding elements for all uses
CH366938A (en) * 1960-01-04 1963-01-31 Cronin Bernard Folding Seat Package
FR2097335A5 (en) * 1970-07-02 1972-03-03 Samia Ste Fse
FR2295190A1 (en) * 1974-12-18 1976-07-16 Peskine Boris Temporary tiered seating platform - has flanged steel engaging lateral floor and bench panels
US4244621A (en) * 1979-04-23 1981-01-13 Hussey Manufacturing Company, Inc. Seating module and base combination, and method of assembling same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809598A (en) * 1929-07-22 1931-06-09 Henry D Oberdorfer Steel bleacher
GB695774A (en) * 1952-05-16 1953-08-19 Percival Bernard Lewis Improvements in or relating to seating structures
CH366938A (en) * 1960-01-04 1963-01-31 Cronin Bernard Folding Seat Package
FR1281784A (en) * 1961-03-01 1962-01-12 Improvements made to tubular scaffolding elements for all uses
FR2097335A5 (en) * 1970-07-02 1972-03-03 Samia Ste Fse
FR2295190A1 (en) * 1974-12-18 1976-07-16 Peskine Boris Temporary tiered seating platform - has flanged steel engaging lateral floor and bench panels
US4244621A (en) * 1979-04-23 1981-01-13 Hussey Manufacturing Company, Inc. Seating module and base combination, and method of assembling same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0291275A2 (en) * 1987-05-13 1988-11-17 GILLMAN &amp; SOAME LIMITED Staging
EP0291275A3 (en) * 1987-05-13 1989-02-22 B.J. Harris (Oxford) Limited Staging
AU609816B2 (en) * 1987-05-13 1991-05-09 B.J. Harris (Oxford) Limited Staging

Also Published As

Publication number Publication date
FR2568924A1 (en) 1986-02-14
FR2568924B1 (en) 1986-11-21
FR2568923B1 (en) 1986-11-21
FR2568923A1 (en) 1986-02-14

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