FR2522709A1 - TRACTABLE TRIBUNE WITH ARTICULATED AND TELESCOPIC GRADES - Google Patents

Abstract

1. Tiered stand, particularly intended for the arrangement of persons either to photograph them or to allow them to attend an entertainment, a conference or other events, of the type comprising a frame (1) which is mounted on wheels (2) and provided with hitching means (3), a first group of so-called upper steps (4) mounted rigidly on the frame, and a second group of so-called lower steps (5) articulated on the first group about a horizontal axis (6) parallel to the steps of the upper and lower groups, it being possible for the lower group (5), by tilting about the axis, to be folded and fitted into the upper group (4) in accordance with a so-called travelling position or, alternatively, opened out in order to adopt a position of use, characterized in that each of the said upper (4) and lower (5) groups of steps comprises a group of so-called outer steps having a hollow prismatic structure, and in that this group of so-called outer steps serves to accommodate at least one group (7, 8 etc...) of similarly shaped so-called inner steps which can be drawn out therefrom by sliding, as a result of which the surface of use of the outer steps of the upper group and lower group can be doubled by drawing out the inner steps.

Description

The present invention is in the field of mobile constructions and has

for object a device

  like a grandstand or stepped platform intended either to allow

  be available to people so that these people

  to be well-seen by another person, for example a photographer, or to allow people on the stand to have an extended field of view, for example

  on a sports or entertainment event.

  We know since the highest Antiqui: -

  the use of stone tiers; we know since

  more recent times how to build the following

  scaffolding techniques; we also know the usual

  photographers have to dispose of people, on the other hand

  weddings, for example, on benches or benches,

  easily transportable woods; we also know the insecurity

  for the persons resulting from such a manner of

  yield. We have also known since a more recent time, in particular by patents FR 2 274 755 McNEAL, US 3 217 366 WENGER, US 3 752 531 TONES and DE 804 129 PRIESS

  towable tribunes specially designed for

  position of persons to enable them to attend a

  show; some of these devices have two groups

  steps, one of which is deployable around a horizontal axis

  zontal to put them in a position of use,

  of this group being built into those of the first group in the road position Although these devices are very practical and very advantageous in their implementation when compared to tribunes built on site

  in the manner of scaffolding, for example, they have, however,

  the disadvantage of a weak capacity in place of specta-

  compared to the size of the device, even

  folded. The purpose of the present invention is to propose a stage or platform whose implementation is very rapid, following a displacement from one place to a

  another, for example, which has all the conditions for

  required for people willing or settled

  on it, and the ratio of the number of spectator seats

  tors in the folded state is clearly superior

  with the devices of the prior art.

  According to the present invention, a

  step, especially for the benefit of persons, either for the purpose of photographing them or for

  allow to attend a performance, a conference or

  events, of the type including a chassis mounted on

  wheels equipped with coupling means, a first group of gra-

  said high mounted fixedly on the chassis, and a se-

  cond group of stepped said bottom articulated on the first group around a horizontal axis parallel to the bleachers of the first

  and second group, the second group can be, by flip-flop

  axle, folded and recessed into the first

  before a so-called road position, or alternatively be de-

  folded to adopt a position of use, is characterized

  in general, in that each of said groups of steps, so-called outer, has a hollow prismatic structure, or tubular, and in that each of said groups serves as housing for at least one group of steps of shape

  internal analogue which can be extracted by

  The term "telescopic" will be termed

  interior dins in relation to external tiers.

  It follows from this characteristic

  of the invention that the surface of use, or still

  re the number of spectator seats available, the stands of the first and second groups may be doubled by extracting the inner tiers; moreover the telescopic character

  of the arrangement of the internal steps with respect to

  outdoor areas allows for extremely easy

and fast.

  Preferably, each group of external steps has, in its middle part, stiffening members, or stiffeners, in a perpendicular plane

  the rows of steps; in addition each group of steps

  tors has stiffening members at its ends

  your; furthermore, abutment means are arranged at the ends of the groups of external and internal steps so as to

  prohibit the complete extraction of the internal tiers.

  So following this preferred form

  layout the end stiffeners of the steps

  are used in the position of using stiffeners of ex-

tremity at the outer tiers.

  According to a preferred form of

  each step is formed of a vertical part and

  of a horizontal part, the horizontal part is

  two horizontal levels connected by a sensitive wall

  vertically; it results from this conformation, known

  in itself in its application to bleachers but particularly

  advantageously and adapted to the case where one

  the transverse stiffening of the tubular structures

  res, that the vertical proi serves both to delimit the area where spectators can sit on a step

  and the zone o can rest the feet of the spectators dis-

  placed on the upper tier, and to contribute to the stiffening

the structure of the terraces.

  More preferably and following a

  Another secondary characteristic of the invention of

  vertical lines are arranged in the vicinity of the angles of

  at least the upper inner groups, said slides being intended to allow the fixing of

  removable, on the one hand, of organs acting as crutches, on the other hand

  on the other hand handrail poles; preferably these slides

  more than the cross-sectional area of the steps

  in order to form driving abutments

  interior dinos in the outer terraces, and means of

  gripping for the extraction of the internal steps.

  More preferably and following a

  another secondary characteristic of the stop abutment means

  are formed by rods, one end of which is

  attached to the stiffeners arranged in the middle part of the

  external dins, the other end comprises a "head", said rods being slidably disposed in holes of the stiffening members which are provided with groups of internal steps; It follows from these provisions that these

  stop devices are not apparent on the

  these outer steps when they are deployed.

  According to dimension-characteristics

  rather advantageous to a particular form of reali-

  of a tribune of the invention, the height of a step

  is about forty centimeters, its total width of

  xing centimeters, each bearing a width of twenty-five centimeters and the wall connecting them, being therefore a

  oblique wall, having a height of ten centimeters.

  According to another characteristic

  the distance between the axis of articulation and the lowest part, after deployment, of the group of low external steps is equal to the distance separating said

  axis of the lower part of the chassis wheels.

  The present invention will be better

  taken and details of them will appear in the descrip-

  tion of a particular embodiment that will be made

  relate to the figures of the attached plates in which:

  Fig 1 is a schematic illustration

  in perspective, of a device of the invention in

folded, or road,

  Figure 2 is a partial illustration

  the perspective of the same in deployed position and after ex-

  certain interior steps, Fig. 3 is a schematic section through

  a vertical plane of the tribune of the preceding figure, it-

  glossing the use and certain dimension-features

  and Fig. 4 is a schematic section of a

  tier of the stand of the preceding figures illustrating from

  very dimensional characteristics.

  In Fig 1 a trailer intended to constitute a grandstand according to the invention, consists mainly of a frame 1 mounted on wheels 2 and attachable to a vehicle by means of a drawbar 3 above the chassis are arranged a first group 4 of steps fixed with respect to the frame and a second group 5 articulated on the first group around a horizontal axis 6 The steps of the first group 4 are said to be high since they will be located

  in the upper part of the tribune; the stands of the

  cond group are said to be low since after tipping around

  the axis 6 they will constitute the lower part of the tribune.

  In accordance with the general characteristic

  Of the invention, each of the above-mentioned groups 4 and 5 has a hollow or tubular prismatic structure intended to telescopically contain so-called internal groups.

  such as 7 and 8 respec-

outdoor dins.

  According to the preferred embodiment

  As shown in the figure, the inner tier groups such as 7 and 8 are about half the length of the outer tiers, so that each group of outer tiers contains two groups of steps.

interiors.

  This division in two of the steps

  the advantage of allowing the presence of organs of

  stiffening 9 and 10 in the middle part of the external steps

  laughing; so groups of inner tiers 11 and 12 a-

  groups 7 and 8 are arranged in the outer tiers symmetrically to the latter in relation to the

stiffening members.

  And again because of their

  Telescopic groups 7 and 8 can slide

  respectively arrows 13 and 14 at the front end of the trailer and groups Il and 12 can slide in the same manner respectively arrows 15 and 16 respectively.

  at the rear end of the trailer.

  Of course, and as is known per se, the set of low steps can rotate around

the axis 6 following arrows 17.

  On fig 2 the towable tribune of

  FIG. 1 is shown in a position deployed in the

  only the inner front groups of groups, that is to say the groups 7 and 8 have been slid out of the groups of external steps 4 and 5, and at the inner end of the groups 7 and 8 members or stiffening structures consisting for example of tubular assemblies 20 for the upper tiers and 21 for the lower steps; structures 20 and 21 have been shown to be different, not because of any

  technical necessity but to give an illustration of

  possibilities for its realization and it must be understood that these structures could be similar,

  whether they are of one form or another; such structures

  tures, or bodies, of stiffening are found in both ex-

  trenches of each of the groups of interior bleachers they

  be higher or lower or front or rear end

  re; it is thus partially represented in 22 the stiffening member which is provided with the second end of the group

Steps 8.

  These bodies or stiffening structures

  9 and 10 in the median plane 19 of the upper and lower external step groups respectively, and what has been said above for the stiffening members of the inner steps is still true for

  these stiffening members external steps.

  It also appears that the organs of

  stiffening 9 and 10, occupying part of the space

  within the stands, constitute an internal or

  darkness of groups of internal stands.

  It should be noted that the stiffeners

  such as 22 serve not only as stiffeners for

  interior of which they are incorporated, but also stiffeners of the external steps in which remains

  housed, even after extraction, the end of the steps

  laughing. The stiffening structures such

  22 still participate in an extrusion stop function.

  thanks to rods such as 23 fixed in 25 for reasons of

  dissectors of the middle part such as 10, mounted slides

  in holes of the stiffeners such as 22 and

  as a head such as 26 and 27 against which come in

  stop the stiffening members such as 22.

  Still on the fiq 2 of the vertical rails such as 30 and 31 are disposed near the end angles of the top outer step group 7; it is of course also the slides 34 and 35 for

  the group of bleachers 11; slides 32 and 36 are available

  at the lower end angle of the lower step groups 8 and 12 respectively, these slides are intended to allow the detachable attachment of members with a bifurcate function.

  such as 38 or posts such as 39 handrail 40.

  In FIG. 3, a diagrammatic section of the platform of the invention by a transverse and median vertical plane shows that the preferred form of the preceding figures

  includes, for groups 4,7,11, high tiers four

  dins, that is to say the possibility of having four rows of seated people, and for the groups 5,8,12 of the low tiers three steps, which after pivoting around the axis 6

  can be built into the upper tiers.

  only if the distance 41 between the axis of articula-

  6 and the lowest part after deployment of the lower outer tier group is equal to the distance separating this axis from the lower part of the wheels, the group of steps

  low, in the deployed position, will rest on the ground.

  In FIG. 4 each step is formed of a vertical part 42, of a horizontal part 43, the horizontal part being itself constituted of two bearings

  horizontal 44 and 45 connected by an inclined wall 46 or

  substantially vertical core; Part 44 may serve as a

  while part 45 can serve as a footrest for spectators sitting on the upper tier; Another function of this conformation of the horizontal part is

  to provide thanks to the existence of the wall 46 a stiffening

  particularly sought after structure due to

  the tubular nature of the latter.

  We will now give an indi-

  measures that are particularly conducive to

  assigned to the forum of the invention, both in

  relate to its tractable character on the road,

  that they relate to the disposition of persons

  seated or standing; the height 50 of a step is approximately

  forty centimeters in length, its total width 51 of about sixty centimeters, each bearing 44 and 45 having a width of 52 centimeters by twenty-five centimeters and 53 centimeters by twenty-five centimeters; the height 54 of the oblique wall

  46 has a height of about ten centimeters for a decala-

  horizontal age 55 about five centimeters.

  Although it has been described a particular embodiment of a towable tribune according to the invention, it should be understood that the scope of the latter is not limited to this form but it extends to all similar device defined by the characteristics

above mentioned.

Claims (8)

R E V E N D I C A T IO N S   1. Tribune tiered, especially intended for the disposal of persons, either for the purpose of photographing them, or for the purpose of   to allow them to attend a performance, a   or other manifestations, of the type comprising a chassis mounted on wheels provided with coupling means, a first group of so-called high stands mounted fixedly on   the chassis, and a second group of bleachers   abutting the first group about a horizontal axis parallel to the steps of the first and second group, the second group may be tilted about the axis, folded and recessed in the first according to a position   route, or alternatively be deployed to adopt   ter a position of use, characterized in that each of said groups (4), (5) stepped, so-called outer, has a hollow prismatic structure, or tubular, and in that it serves as housing for at least a group (7, 8 etc.) of steps of similar shape said internal being able to be extracted by sliding, it follows that the area of use of the stands of the first and second group can be doubled by extraction of the internal steps Stepped platform according to Claim 1, characterized in that each group of gra-   upper (4) and down (5) outside can house two groups of internal stands (8, 12 etc.) end to end Stepped platform according to Claim 2, characterized in that each group of gra-   external dins (4) (5) comprises in its middle part stiffening members, or stiffeners (9) (10) in a plane (19) perpendicular to the rows of the steps, in that each group of gra-   internal dies comprises stiffening members (20) (21) at its ends, and in that stop means   are arranged at the ends of the groups of external bleachers   and interior so as to prohibit the complete extraction of the inner tiers, so that the stiffening   The end stops of the inner tiers serve   use of end stiffeners at external tiers 4. stepped platform according to claim 3; characterized in that each step being   formed of a vertical part (42) and a horizontal part   zontal (43), the horizontal portion consists of two horizontal bearings (44), (45) connected by a wall (46), substantially vertical, where it follows that the vertical wall serves both to delimit the zone o can sit spectators on a step and the area where can stand the feet of the spectators arranged on the upper tier, and contribute to the stiffening of the structure of the stands 5. stepped platform according to claim 4, characterized in that more precisely the   height (50) of a step is about forty centimeters   its total width (51) of sixty centimeters, each bearing having a width (52) (53) of twenty-five centimeters and the wall connecting them, being consequently   an oblique wall, having a height (54) of ten centi-   meters. Stepped platform according to Claim 3, characterized in that vertical slides   shims (30) (31) are arranged in the vicinity of the corners   end of at least the upper inner groups, the   said slideways being intended to allow the fixing removably, on the one hand, organs function as crutches (38), on the other hand poles (39) handrail (40); 7. stepped platform according to claim 3, characterized in that the distance between the hinge axis (6) and the lowest part, after deployment, the group of lower outdoor stands is equal to the distance between said axis of the lower part of the wheels (2) of the chassis; Stepped platform according to Claim 3, characterized   in that stop means for ex-   traction are constituted by rods (23) whose one end is fixed to the stiffeners (1 C) arranged in the middle part of   external tiers, the other end of which   te (26), said rods being slidably disposed in holes of the stiffening members which are provided with the groups of internal steps, from which it follows that these members with stop function are not visible on the faces.   steps when deployed.