EP0267542B1 - Train de roues pour tribune mobile - Google Patents

Train de roues pour tribune mobile Download PDF

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Publication number
EP0267542B1
EP0267542B1 EP87116321A EP87116321A EP0267542B1 EP 0267542 B1 EP0267542 B1 EP 0267542B1 EP 87116321 A EP87116321 A EP 87116321A EP 87116321 A EP87116321 A EP 87116321A EP 0267542 B1 EP0267542 B1 EP 0267542B1
Authority
EP
European Patent Office
Prior art keywords
moving mechanism
fluid
rollers
tight
platform
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.)
Expired - Lifetime
Application number
EP87116321A
Other languages
German (de)
English (en)
Other versions
EP0267542A1 (fr
Inventor
Michael Bauer
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.)
Bayerische Buehnenbau GmbH
Original Assignee
Bayerische Buehnenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Buehnenbau GmbH filed Critical Bayerische Buehnenbau GmbH
Priority to AT87116321T priority Critical patent/ATE62971T1/de
Publication of EP0267542A1 publication Critical patent/EP0267542A1/fr
Application granted granted Critical
Publication of EP0267542B1 publication Critical patent/EP0267542B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E04H3/123—Telescopic grandstands

Definitions

  • the invention relates to a chassis for a movable grandstand, in particular an extendable grandstand, with rollers that are mounted retractable on grandstand feet so that in the retracted state of the casters on the grandstand feet fixed contact surfaces come into contact with the ground (hall floor) to initiate the traffic load , wherein the rollers are mounted retractable / extendable via fluid-operated lifting devices and wherein the lifting devices have a fluid-tight cushion.
  • Such stands which are also referred to as telescopic stands, can be pushed together when not in use and lowered into niches or in the floor. If seats are required, the grandstands are extended, for which purpose castors are attached to the grandstand feet.
  • rollers It is known to store the rollers "retractable" above springs, the springs being designed and arranged so that the rollers in the unloaded state the grandstand protrude above contact surfaces. But when the stands are loaded by the spectators, the springs are compressed and the contact surfaces come into contact with the ground.
  • the springs are generally chosen so stiff that the contact surfaces come into contact with the ground at about 10% of the maximum traffic load.
  • the surface pressures are harmless, the hall floor is not permanently deformed, but if the grandstand is standing for a long time, the castors always press on the same point, so that even with only 10% of the traffic load, the castors are introduced into the ground, permanent deformation can occur.
  • the rollers always assume the same position when the grandstand is extended.
  • Trolleys of the type mentioned are known essentially from US-A 3,525,184.
  • Movable seating units are provided there, a plurality of bogies with individually mounted rollers being arranged on the underside of a grandstand area.
  • These rollers are rotatably mounted on arms which can be pivoted about horizontal axes, so that they can be pivoted from a retracted rest position into an extended working position in which the grandstand can be moved.
  • an individual air cushion engages for each such roller, which is attached to the main frame and serves to pivot the respective arm with the roller mounted thereon.
  • the corresponding bearings, swivel arms, actuators and air cushions are provided separately for each roller.
  • the object of the invention is therefore to develop a chassis of the type mentioned in such a way that a high stability is ensured with a low floor load with a simple structure.
  • the solution according to the invention consists in designing a running gear of the type in question in such a way that a holding rail in the running gear has an upper end face and in a carrier is mounted, which essentially has a hat profile, and that the cushion is tubular and is arranged between the upper end surface of the holding rail and the opposite surface of the carrier.
  • the rollers are then retracted or drawn in via the lifting devices designed as fluid-tight cushions when the grandstand has reached its end position in the extended state.
  • Retracting the rollers is understood to mean that the non-positive connection between the stands and the rollers is essentially interrupted.
  • only the fluid-tight cushion between the holding rail on the one hand and the carrier on the other hand needs to be actuated without complicated pivot bearings or lifting cylinders being required.
  • running gear which is assigned to a stand foot, and that each running gear has its own fluid-tight cushion for all running rollers in this running gear.
  • the fluid-tight cushions of the lifting devices are assigned a controllable valve arrangement, via which their fluid pressure can be increased or decreased. So when the grandstand has been extended, the valve can be opened so that the fluid pressure is reduced. The rollers then only rest on the floor with their own weight, but are not preloaded against the floor. On the other hand, the fluid pressure for moving the grandstand can be increased.
  • valve arrangement can be controlled by hand, if necessary remotely. This can be done using a linkage, for example.
  • valve arrangement can be controlled automatically in such a way that a load exceeding the weight of the grandstand by a certain amount of, for example, 2% to 10% of the traffic load opens the valve arrangement.
  • the automatic control can take place, for example, via a pressure relief valve with pronounced hysteresis properties, which opens (permanently) when the fluid pressure, which corresponds to the absorbed load, exceeds a certain amount.
  • This amount can have a value very close to or above the weight of the grandstand, so that when the grandstand construction has completely taken its final position, an operator enters the stage and thus triggers the valve, so that the non-positive connection between the grandstand foot and rollers released by releasing the pressure.
  • one pressure fluid source is provided which can be connected to the valve arrangements of the fluid-tight cushions of the lifting devices, the pressure fluid source having a pump and / or a pressure accumulator.
  • the pump can be operated by hand or by motor, while a compressed air bottle, for example, is suitable as a pressure accumulator, and both devices can also be used together.
  • the holding rail of the undercarriage is mounted in a height-displaceable manner in its carrier fastened to the stand foot.
  • the construction of the chassis according to the invention is particularly simple because it is simple Slot guides are sufficient and no complex swivel bearings or the like. required are.
  • FIG. 1 a schematic, half-sectioned side view of a chassis with extended rollers
  • Fig. 2 a section along the line II-II of Fig. 1
  • 3 and 4 Representations like FIGS. 1 and 2, but in the lowered state of the rollers.
  • the preferred embodiment of the undercarriage 8 comprises a support 9, which has a hat-shaped profile in cross section, the interior of the support 9 being open downwards towards the hall floor 10.
  • the support 9 On its upper side, the support 9 is welded to a stand foot 5 of the stand.
  • a holding rail 2 is held by a height-adjustable bearing 4, on which several rollers 1 are rotatably attached.
  • the bearing 4 is designed in such a way that the rollers 1 protrude in the lowered state over bearing surfaces 3, which sit on the lower edge of the carrier 9.
  • the large-area support surfaces 3 are in contact with the hall floor 10, and the rollers 1 rest only on the hall floor 10 with their negligible weight.
  • the holding rail 2 for the rollers 1 has the shape of a U-profile, so that a cavity is formed by its top in the carrier 9.
  • a lifting cushion 6, which can be designed as a hose.
  • the fluid-tight, tube-shaped cushion 6 6 is provided with a valve 7, which projects upwards out of the carrier 9 through a bore.
  • the lifting cushion 6 is inflated, the valve 7 is closed, so that the idler rollers 1 protrude downwards over the contact surfaces 3. In this state, the stage can be moved, the rollers 1 keep the support surfaces 3 at the necessary distance from the hall floor 10. Because a common lifting cushion 6 is provided for all rollers 1, certain unevenness of the floor 10 can also be compensated for.
  • the valve 7 is opened so that the pressure fluid contained in the lifting cushion 6 can flow out.
  • the contact surfaces 3 then come into contact with the hall floor 10 (see FIGS. 3 and 4). Because the pressure has been released from the cushion 6, no more force is introduced via the rollers 1 into the hall floor 10, regardless of the size of the traffic load applied.
  • the grandstand is fixed by the frictional connection of the support surfaces 3 mt the floor 10, so that the necessary security is guaranteed even when the first user enters the stage.
  • the lifting cushion 6 is designed as a long hose, a relatively low pressure is sufficient for this, which can be introduced via a hand pump, a motor-driven pump or via a compressed air container carried along. Of course, it is also possible to use a correspondingly long compressed air line that leads to a compressor.
  • valve 7 is designed as a pressure relief valve as described at the beginning, which opens when the internal pressure in the lifting cushion 6 reaches a predetermined amount. This creates a kind of "automatic" device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Legs For Furniture In General (AREA)
  • Vibration Prevention Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Claims (8)

  1. Train de roues pour une tribune mobile, en particulier une tribune télescopique, comprenant des roues (1) montées de manière escamotable sur les pieds (5) de la tribune de telle façon que, à l'état rentré des roues (1), des surfaces d'appui (3) fixées sur les pieds de la tribune viennent en contact avec le sol (plancher de la salle) pour absorber la charge mobile, les roues (1) étant montées de façon à pouvoir être rentrées/sorties par l'intermédiaire de dispositifs de levage hydrauliques (6) et lesdits dispositifs de levage hydrauliques comportant un coussin (6) étanche au fluide, caractérisé en ce qu'un rail de soutien (2) dans le train de roues (8) présente une surface terminale supérieure et est monté dans un support (9) qui présente sensiblement un profil de chapeau; et que le coussin (6) est conformé en tuyau et disposé entre la surface terminale supérieure du rail de soutien (2) et la surface opposée du support.
  2. Train de roues selon la revendication 1, caractérisé en ce que plusieurs roues (1) sont groupées en un train de roues (8) associé à un pied de tribune (5); et que chaque train de roues (8) comprend un coussin (6) étanche au fluide séparé pour la totalité des roues (1) dudit train de roues (8).
  3. Train de roues selon l'une des revendications 1 ou 2, caractérisé en ce que plusieurs coussins (6) étanches au fluide communiquent de manière étanche au fluide de façon à pouvoir être actionnés ensemble.
  4. Train de roues selon l'une des revendications 1 à 3, caractérisé en ce qu'aux coussins (6) étanches au fluide des dispositifs de levage est associé un système de soupapes (7) commandables par l'intermédiaire duquel leur pression hydraulique peut être augmentée ou diminuée.
  5. Train de roues selon la revendication 4, caractérisé en ce que le système de soupapes (7) peut être commandé manuellement (éventuellement à distance).
  6. Train de roues selon la revendication 4, caractérisé en ce que le système de soupapes (71 peut être commandé de manière automatique de telle façon qu'une charge dépassant le poids propre de la tribune d'une quantité déterminée (2 % à 10 % de la charge mobile) provoque l'ouverture du système de soupapes (7).
  7. Train de roues selon l'une des revendications 1 à 6, caractérisé en ce qu'il comporte (au moins) une source de pression hydraulique qui peut être raccordée aux systèmes de soupapes (7) des coussins (6) étanches au fluide des dispositifs de levage, la source de pression hydraulique comprenant une pompe et/ou un accumulateur hydraulique (bouteille d'air comprimé).
  8. Train de roues selon l'une des revendications 1 à 7, caractérisé en ce que le rail de soutien (2) du train de roues (8) est monté de manière réglable en hauteur dans son support (9) fixé sur le pied de tribune (5).
EP87116321A 1986-11-11 1987-11-05 Train de roues pour tribune mobile Expired - Lifetime EP0267542B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116321T ATE62971T1 (de) 1986-11-11 1987-11-05 Fahrwerk fuer eine verfahrbare tribuene.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3638506 1986-11-11
DE3638506A DE3638506C1 (de) 1986-11-11 1986-11-11 Fahrwerk fuer eine verfahrbare Tribuene

Publications (2)

Publication Number Publication Date
EP0267542A1 EP0267542A1 (fr) 1988-05-18
EP0267542B1 true EP0267542B1 (fr) 1991-04-24

Family

ID=6313690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116321A Expired - Lifetime EP0267542B1 (fr) 1986-11-11 1987-11-05 Train de roues pour tribune mobile

Country Status (3)

Country Link
EP (1) EP0267542B1 (fr)
AT (1) ATE62971T1 (fr)
DE (2) DE3638506C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043649A1 (de) * 2000-09-05 2002-03-28 Hans Kroher Ingenieurbuero Fue Fahrwerk für eine verfahrbare Tribüne

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5669086A (en) * 1994-07-09 1997-09-23 Mangar International Limited Inflatable medical lifting devices
DE19943969A1 (de) * 1999-09-14 2001-03-15 Joachim Aurich Kraftfahrzeugversetzeinrichtung
ITRM20080539A1 (it) * 2008-10-09 2010-04-10 Angelo Trotta Dispositivo pneumatico di sollevamento e movimentazione di oggetti, in particolare per oggetti di arredamento.
WO2012150853A1 (fr) * 2011-05-02 2012-11-08 Alismobile, S.A. De C.V. Système de gradins télescopiques comprenant un chariot motorisé pour son transport
CN102328552B (zh) * 2011-07-11 2013-04-17 江苏金陵体育器材股份有限公司 看台滚轮刹车装置
FI129355B (fi) * 2020-02-21 2021-12-31 Maekelae Alu Oy Siirtoalusta

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2870492A (en) * 1953-04-06 1959-01-27 Fred Medart Mfg Co Seating structures
FR1089634A (fr) * 1953-09-17 1955-03-21 Perfectionnements apportés aux cloisons mobiles pour constructions
US2877507A (en) * 1956-04-04 1959-03-17 Cons Foundries And Mfg Corp Mobile tiered assemblage
US2968841A (en) * 1956-11-19 1961-01-24 Universal Bleacher Co Movable folding bleacher
US3525184A (en) * 1967-12-18 1970-08-25 Western Unit Corp Stadium with mobile seating sections

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043649A1 (de) * 2000-09-05 2002-03-28 Hans Kroher Ingenieurbuero Fue Fahrwerk für eine verfahrbare Tribüne
DE10043649B4 (de) * 2000-09-05 2004-04-15 Hans Kroher Fahrwerk für eine verfahrbare Tribüne

Also Published As

Publication number Publication date
DE3638506C1 (de) 1988-02-18
ATE62971T1 (de) 1991-05-15
DE3769597D1 (de) 1991-05-29
EP0267542A1 (fr) 1988-05-18

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