WO1984000788A1 - Foldable bracket, particularly for a roof ladder - Google Patents

Foldable bracket, particularly for a roof ladder Download PDF

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Publication number
WO1984000788A1
WO1984000788A1 PCT/FR1983/000168 FR8300168W WO8400788A1 WO 1984000788 A1 WO1984000788 A1 WO 1984000788A1 FR 8300168 W FR8300168 W FR 8300168W WO 8400788 A1 WO8400788 A1 WO 8400788A1
Authority
WO
WIPO (PCT)
Prior art keywords
platform
plate
strut
ladder
axis
Prior art date
Application number
PCT/FR1983/000168
Other languages
French (fr)
Inventor
Jean Bertuletti
Original Assignee
Rollands Co Soc
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 Rollands Co Soc filed Critical Rollands Co Soc
Publication of WO1984000788A1 publication Critical patent/WO1984000788A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/26—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons specially adapted for working on roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/26—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons specially adapted for working on roofs
    • E04G3/265—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons specially adapted for working on roofs with means to adapt it to a variable pitch of the roof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/041—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffolds on roof frameworks or on roofs

Definitions

  • the present invention relates to a foldable console in particular for being hung on a roof ladder comprising a platform, a support beam on the ladder, first means of articulation of the platform relative to the trestle, a strut comprising at one of its ends a transverse axis anchoring in notches of the beam and second means of articulation of the other end of the strut relative to the platform.
  • roofing works require in some cases the application of the ladder on the roof with an inclination of the order of 30 ° to 60 ° relative to the direction of descent of the roof. These cases relate to work carried out along an edge or a valley of the roof for example.
  • the console as described in the aforementioned patent cannot then be used because the working plane of the platform of the console would be inclined relative to the horizontal plane and therefore on a slope.
  • the main object of the present invention is to remedy this drawback.
  • a foldable console as defined in the entry into material is characterized in that it comprises hookable rotation means on the scale to orient the beam relative to the scale.
  • the means of rotation comprise a first plate which is mounted for rotation about an axis integral with the beam and which comprises at least one hook which can be hooked to a rung of the ladder.
  • the strut is essentially constituted by a telescopic rod to refine the adjustment of the horizontality of the work plan of the platform also obtained by means of the selection of notches of the beam for anchoring the transverse axis of the strut.
  • This anchoring is maintained by locking means of the kind comprising a slide mounted to slide along the beam to close the selected notches when it abuts against the transverse axis of the strut.
  • the locking means prevent an untimely lifting of the platform which could cause the transverse axis of the strut to emerge from the notches of the beam and therefore the folding of the platform against the beam.
  • - Fig. 1 is a perspective view of the console, the first plate being inclined relative to the beam;
  • - Fig. 2 is an exploded perspective view of the console;
  • - Fig. 3 is a top view of the console hung on a ladder inclined relative to the direction of descent from a roof;
  • - Fig. 4 is a side view of the console and of the ladder shown in FIG. 3.
  • a foldable console for ladders namely a platform 1, a beam 2 and a strut 3.
  • the platform 1 has a rectangular work surface 10 and longitudinal sides 11 forming angles, obtained by folding at a right angle under the work surface.
  • the cross section of the platform is thus like a wide open U.
  • two transverse holes 12 for the passage of the threaded ends 40 of a first hinge pin 4 between the front end of the platform 1 and the upper end of the beam 2.
  • Towards the rear of the sides 11 are also provided two other transverse holes 13 for the passage of the threaded ends 50 of a second hinge pin 5 between the rear of the platform 1 and the upper end of the strut 3.
  • the axis 5 is secured to the sides 11 by means of two nuts 51 which screw at the ends 50 against the sides 11.
  • a transverse fold at right angles 14 is projecting from the rear end of the platform 1 for block any load that has been moved during work and could fall.
  • a U-shaped cross section plate 15 between the sides 11.
  • This plate 15 is secured to the work surface 10 by two rivets 16 passing through a fold at right angles to the front end of the U-shaped section of the plate 15 and is secured to the fold 14 by two other longitudinal rivets passing through the other flat rear end of the U-shaped section of the plate 15.
  • the transverse dimension of the U-shaped plate 15 is substantially less than the distance between the beams of the beam 2.
  • the plate 15 is fitted between them in front of a rear spacer of the beam during the folding of the console by rotation of the platform 1 around the axis 4 and folding it over the beam 2.
  • the beam 2 is rectangular and consists of two beams 20 with a T section.
  • the beams are kept parallel to a distance less than that of the uprights 60 of a standard scale 6 (FIG. 3) by means of a front spacer 21 and a rear spacer 22 which are welded to the ends of the side members.
  • Transversal pairs of identical notches 23 forming a rack are formed substantially along the rear half of the side members 20 for the work positioning of the lower end of the strut 3.
  • Another transverse pair of identical notches 24 is formed at the front end of the side members 20 for the folding of the strut 3.
  • two transverse holes 25 are made for the passage of the threaded ends 40 of the first hinge pin 4.
  • the pin 4 is integral with the front ends. sides 11 of the platform 1 which brace the front ends of the side members 20 at the aligned holes 12 and 25, by means of two nuts 41 screwed on the ends 40 against the sides 11.
  • the strut 3 is constituted by a composite telescopic rod 30-31, here of square section, and by a transverse axis 32.
  • the upper hollow element 30 of the telescopic rod has two holes 33 at its upper part through which passes the middle of the second articulation axis 5 in order to articulate the strut 3 relative to the platform 1.
  • the middle of the axis 32 is welded through the lower end of the lower content element 31 of the telescopic rod.
  • the ends 34 of the axis 32 are intended to be engaged in a pair of notches 23 judiciously chosen according to the slope of the roof or of the ladder element 6 to ensure the horizontality of the platform 1, or to be engaged in the pair of front notches 24 during the folding of the strut on the beam 2 and under the platform 1.
  • the horizontality of the platform 1 is also obtained by adjusting the length of the telescopic rod 30-31. This adjustment is made, for example, as illustrated by the alignment of a pair of transverse holes 35 in the upper element 30 with one of pairs of transverse holes 36 in the lower element 31 and by immobilizing the element 31 in the element 30 by a bolt 37 passing through the aligned holes 35 and 36 and by a locking nut 38 screwed on the bolt.
  • a slide 7 is provided to block the ends 34 of the axis 32 in the two selected notches 23.
  • the slide is a plate folded in a U and slides along the side members 20 and under these.
  • the upper ends 70 of the slider 7 are folded over the side members 20 while the lower ends of the slider 7 form two notches 71 directed towards the lower spacer 22.
  • the slide 7 is lowered along the side members 20 and covers the two notches 23, the corners of the notches 71 resting by gravity on parts of the axis 32 between the notches 23.
  • the slide 7 thus locks the strut 3 on the beam 2.
  • the rotation means 8 mainly comprise a first plate 80 and a second plate 81 which is fixed under the beam 2 between the side members 20 and which is rotatably mounted on the first plate 80.
  • the second plate 81 is flat and rectangular and is welded between the upper ends of the side members 20.
  • a hinge hole 82 is made in the plate 81 on the longitudinal axis of the beam 2.
  • the 83 is formed on either side of this longitudinal axis in the plate 81 on a circle having the hole 82 as its center.
  • the lumen 83 can be provided above the hole 82 (FIG. 2) or below it ci (Fig. 3).
  • the upper end 84 of the first plate 80 is folded down in a U shape to form a long transverse hook which can be hooked on a rung 61 of the scale 6.
  • the widths of the plates 80 and 81 are equal to that of the beam 2.
  • the length of the rectangular surface of the plate 80 pressing against the other plate 81 is equal to the standard distance between two rungs 61.
  • At the bottom of the first plate 80 are welded two hooks 85.
  • In the plate 80 is also provided with an articulation hole 86 on the longitudinal axis.
  • the hole 86 is aligned with the hole 82 to be crossed by a hinge pin which is preferably non-removable 9 connecting the two plates 80 and 81.
  • the pin 9 is formed by a nut bolt which can be crimped or welded on the one of the plates, or by a crimped hollow rivet or similar means.
  • a threaded lug 87 is welded on the longitudinal axis of the surface of the plate 80 opposite the plate 81 and passes through the lumen 83.
  • a locking nut-washer assembly 89 mounted on the lug 87 makes it possible to block the chosen inclination of the first plate 80 relative to the second plate 81 following a rotation about the axis 9.
  • Figs. 3 and 4 show the console according to the invention positioned on a scale 6 inclined at an angle ⁇ .
  • the first plate 80 is hooked by its hooks 84 and 85 at two neighboring non-horizontal steps 61 and the beam 2 is aligned in the vertical plane X'X by rotation about the axis 9 and locked in this position by tightening the assembly 89 on the lug 87.
  • the work surface 10 is lifted towards the horizontal by adjusting the length of the telescopic rod 30-31 which is maintained at the length chosen by the bolt 37 and the nut 38, and by embedding the ends 34 of the axis 32 in two notches 23 which are locked by the slide 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Abstract

The bracket comprises a platform (1), a bearing beam (2) on the ladder, a joined shaft (21) for the articulation of the platform with the beam, a strut (3) having a transverse axis (32) anchored in the notches (23) of the beam, and a joined shaft (51) joining the strut to the platform. In order to provide a horizontal working plane (10) of the platform when the ladder is inclined with respect to the roof slope and rests for example along a valley, the bracket comprises a plate (80) of which the rotation about and axis (9) integral with the beam (2) is prevented to position the beam vertically. The plate comprises at least a hook (84) which is hookable at a spoke of the ladder. The strut is a telescopic rod (30-31) which is adjustable lengthwise. A slide (7) along the beam (2) closes the anchoring notches (23) of the shaft (32) of the strut to prevent an undesirable folding back of the platform.

Description

CONSOLE PLIABLE NOTAMMENT POUR ECHELLE DE TOIT FOLDING CONSOLE, PARTICULARLY FOR ROOF LADDER
La présente invention concerne une console pliable notamment pour être accrochée à une échelle de toit comprenant une plate-forme, une poutrelle d'appui sur l'échelle, des premiers moyens d'articulation de la plate-forme par rapport à la pou trelle, une jambe de force comportant à l'une de ses extrémités un axe transversal s'ancrant dans des crans de la poutrelle et des seconds moyens d'articulation de l ' autre extrémité de la jambe de force par rapport à la plate-forme.The present invention relates to a foldable console in particular for being hung on a roof ladder comprising a platform, a support beam on the ladder, first means of articulation of the platform relative to the trestle, a strut comprising at one of its ends a transverse axis anchoring in notches of the beam and second means of articulation of the other end of the strut relative to the platform.
Une telle console est déjà décrite dans le brevet français FR-A-2.292.089. La poutrelle d'appui est directement accrochée à un échelon de l'échelle par deux crochets soudés à l'extrémité supérieure de la poutrelle. L'ensemble de la console est toujours au-dessus de l'échelle.Such a console is already described in French patent FR-A-2,292,089. The support beam is directly attached to a rung of the ladder by two hooks welded to the upper end of the beam. The entire console is always above the ladder.
L'utilisation de cette console connue permet de positionner la plate-forme à l'horizontale sans difficulté lorsque l'échelle est posée suivant la pente du toit.The use of this known console makes it possible to position the platform horizontally without difficulty when the ladder is placed along the slope of the roof.
Cependant, les travaux de couverture requièrent dans certains cas l'application de l'échelle sur le toit avec une inclinaison de l'ordre de 30° à 60° par rapport à la direction de descente du toit. Ces cas concernent des travaux effectués le long d'une arête ou d'une noue du toit par exemple. La console telle que décrite dans le brevet précité ne peut pas être alors utilisée du fait que le plan de travail de la plate-forme de la console se trouverait incliné par rapport au plan horizontal et donc en dévers.However, roofing works require in some cases the application of the ladder on the roof with an inclination of the order of 30 ° to 60 ° relative to the direction of descent of the roof. These cases relate to work carried out along an edge or a valley of the roof for example. The console as described in the aforementioned patent cannot then be used because the working plane of the platform of the console would be inclined relative to the horizontal plane and therefore on a slope.
La présente invention vise principalement à remédier à cet inconvénient.The main object of the present invention is to remedy this drawback.
A cette fin, une console pliable telle que définie dans l'entrée en matière est caractérisée en ce qu'elle comprend des moyens de rotation crochetables à l'échelle pour orienter la poutrelle par rapport à l'échelle. De préférence, les moyens de rotation comprennent une première plaque qui est montée à rotation autour d'un axe solidaire de la poutrelle et qui comporte au moins un crochet crochetable à un échelon de l'échelle. Ainsi, lorsque l'échelle fait un angle avec la direction de descente du toit, la première plaque est crochetée à l'échelle comme la poutrelle de la console selon le brevet FR-A-2.292.089, tandis que le reste de la console et notamment sa poutrelle sont positionnés suivant la direction de descente du toit par rotation vers le bas. Le plan de travail de la plate-forme peut être ensuite levé vers l'horizontale sans aucun dévers. Des moyens de biocage de la rotationde lapoutrell relativement à la première plaque sont prévus pour maintenir la poutrelle dans l'axe de la pente du toit. Selon d'autres aspects de l'invention, la jambe de force est constituée essentiellement par une tige téléscopique pour affiner le réglage de l'horizontalité du plan de travail de la plate-forme obtenu également au moyen de la sélection de crans de la poutrelle pour l'ancrage de l'axe transversal de la jambe de force. Cet ancrage est maintenu par des moyens de verrouillage du genre comprenant un coulisseau monté à coulissement le long de la poutrelle pour fermer les crans sélection nés lorsqu'il bute contre l'axe transversal de la jambe de force. Les moyens de verrouillage évitent une levée intempestive de la plate-forme qui pourrait entraîner la sortie de l'axe transversal de la jambe de force des crans de la poutrelle et donc le rabattement de la plate-forme contre la poutrelle.To this end, a foldable console as defined in the entry into material is characterized in that it comprises hookable rotation means on the scale to orient the beam relative to the scale. Preferably, the means of rotation comprise a first plate which is mounted for rotation about an axis integral with the beam and which comprises at least one hook which can be hooked to a rung of the ladder. Thus, when the ladder makes an angle with the direction of descent of the roof, the first plate is hooked to the ladder like the beam of the console according to patent FR-A-2,292,089, while the rest of the console and in particular its beam are positioned in the direction of descent of the roof by rotation downwards. The work surface of the platform can then be raised to the horizontal without any tilt. Means of biocage of the rotation of the beam relative to the first plate are provided to maintain the beam in the axis of the slope of the roof. According to other aspects of the invention, the strut is essentially constituted by a telescopic rod to refine the adjustment of the horizontality of the work plan of the platform also obtained by means of the selection of notches of the beam for anchoring the transverse axis of the strut. This anchoring is maintained by locking means of the kind comprising a slide mounted to slide along the beam to close the selected notches when it abuts against the transverse axis of the strut. The locking means prevent an untimely lifting of the platform which could cause the transverse axis of the strut to emerge from the notches of the beam and therefore the folding of the platform against the beam.
D'autres avantages de la présente invention apparaîtront plus clairement à la lecture de la description suivante d'un mode de réalisation préféré ce la console selon l'invention en référence aux dessins annexés correspondants, dans lesquels :Other advantages of the present invention will appear more clearly on reading the following description of a preferred embodiment of the console according to the invention with reference to the corresponding appended drawings, in which:
- la Fig. 1 est une vue en perspective de la console, la première plaque étant inclinée par rapport à la poutrelle; - la Fig. 2 est une vue en perspective éclatée de la console; - la Fig. 3 est une vue de dessus de la console accrochée à une échelle inclinée par rapport à la direction de descente d'un toit; et - la Fig. 4 est une vue de côté de la console et de l'échelle montrées à la Fig. 3.- Fig. 1 is a perspective view of the console, the first plate being inclined relative to the beam; - Fig. 2 is an exploded perspective view of the console; - Fig. 3 is a top view of the console hung on a ladder inclined relative to the direction of descent from a roof; and - Fig. 4 is a side view of the console and of the ladder shown in FIG. 3.
En se référant aux Figs. 1 et 2 , on retrouve les trois éléments essentiels d'une console pliable pour échelle, à savoir une plate-forme 1, une poutrelle 2 et une jambe de force 3.Referring to Figs. 1 and 2, we find the three essential elements of a foldable console for ladders, namely a platform 1, a beam 2 and a strut 3.
La plate-forme 1 présente un plan de travail rectangulaire 10 et des côtés longitudinaux 11 formant cornières, obtenus par pliage à angle droit sous le plan de travail. La section transversale de la plate-forme est ainsi comme un U largement ouvert. A l'extrémité avant des côtés 11 sont prévu deux trous transversaux 12 pour le passage des extrémités file tées 40 d'un premier axe d'articulation 4 entre l'extrémité avant de la plate-forme 1 et l'extrémité supérieure de la poutrelle 2. Vers l'arrière des côtés 11 sont également prévus deux autres trous transversaux 13 pour le passage des extrémités filetées 50 d'un second axe d'articulation 5 entre l'arrière de la plate-forme 1 et l'extrémité supérieure de la jambe de force 3. L'axe 5 est solidaire des côtés 11 au moyen de deux écrous 51 visses aux extrémités 50 contre les côtés 11. Un repli transversal à angle droit 14 est saillant sur l'extrémité arrière de la plate-forme 1 pour bloquer toute charge qui aurait été déplacée en cours de travail et risquerait de choir. Sous l'extrémité arrière de la plate-forme est prévue une plaque à section transversale en U 15 entre les côtés 11. Cette plaque 15 est solidaire du plan de travail 10 par deux rivets 16 traversant un repli à angle droit à l'extrémité avant de la section en U de la plaque 15 et est solidaire du repli 14 par deux autres rivets longitudinaux traversant l'autre extrémité arrière plane de la section en U de la plaque 15. La dimension transversale de la plaque en U 15 est sensiblement inférieure à la distance entre les longerons de la poutrelle 2. La plaque 15 s'encastre entre ces derniers devant une entretoise arrière de la poutrelle lors du repliement de la console par rotation de la plate-forme 1 autour de l'axe 4 et rabattement de celle-ci sur la poutrelle 2.The platform 1 has a rectangular work surface 10 and longitudinal sides 11 forming angles, obtained by folding at a right angle under the work surface. The cross section of the platform is thus like a wide open U. At the front end of the sides 11 are provided two transverse holes 12 for the passage of the threaded ends 40 of a first hinge pin 4 between the front end of the platform 1 and the upper end of the beam 2. Towards the rear of the sides 11 are also provided two other transverse holes 13 for the passage of the threaded ends 50 of a second hinge pin 5 between the rear of the platform 1 and the upper end of the strut 3. The axis 5 is secured to the sides 11 by means of two nuts 51 which screw at the ends 50 against the sides 11. A transverse fold at right angles 14 is projecting from the rear end of the platform 1 for block any load that has been moved during work and could fall. Under the rear end of the platform is provided a U-shaped cross section plate 15 between the sides 11. This plate 15 is secured to the work surface 10 by two rivets 16 passing through a fold at right angles to the front end of the U-shaped section of the plate 15 and is secured to the fold 14 by two other longitudinal rivets passing through the other flat rear end of the U-shaped section of the plate 15. The transverse dimension of the U-shaped plate 15 is substantially less than the distance between the beams of the beam 2. The plate 15 is fitted between them in front of a rear spacer of the beam during the folding of the console by rotation of the platform 1 around the axis 4 and folding it over the beam 2.
La poutrelle 2 est rectangulaire et est constituée par deux longerons 20 à section en T. Les longerons sont maintenus parallèles à une distance inférieure à celle des montants 60 d'une échelle standard 6 (Fig. 3) au moyen d'une entretoise avant 21 et d'une entretoise arrière 22 qui sont soudées aux extrémités des longerons. Des paires transversales de crans identiques 23 formant crémaillère sont pratiqués sensiblement le long de la moitié arrière des longerons 20 pour le positionnement au travail de l'extrémité inférieure de la jambe de force 3. Une autre paire transversale de crans identiques 24 est pratiquée à l'extrémité avant des longerons 20 pour le rabattement de la jambe de force 3. Egalement à l'avant des longerons 20, entre l'entretoise 21 et les crans 24, sont pratiqués deux trous transversaux 25 pour le passage des extrémités filetées 40 du premier axe d'articulation 4. L'axe 4 est solidaire des extrémités avant. des côtés 11 de la plate-forme 1 qui entretoisent les extrémités avant des longerons 20 au niveau des trous alignés 12 et 25 , au moyen de deux écrous 41 vissés sur les extrémités 40 contre les côtés 11.The beam 2 is rectangular and consists of two beams 20 with a T section. The beams are kept parallel to a distance less than that of the uprights 60 of a standard scale 6 (FIG. 3) by means of a front spacer 21 and a rear spacer 22 which are welded to the ends of the side members. Transversal pairs of identical notches 23 forming a rack are formed substantially along the rear half of the side members 20 for the work positioning of the lower end of the strut 3. Another transverse pair of identical notches 24 is formed at the front end of the side members 20 for the folding of the strut 3. Also at the front of the side members 20, between the spacer 21 and the notches 24, two transverse holes 25 are made for the passage of the threaded ends 40 of the first hinge pin 4. The pin 4 is integral with the front ends. sides 11 of the platform 1 which brace the front ends of the side members 20 at the aligned holes 12 and 25, by means of two nuts 41 screwed on the ends 40 against the sides 11.
La jambe de force 3 est constituée par une tige composite téléscopique 30-31, ici à section carrée, et par un axe transversal 32. L'élément contenant creux supérieur 30 de la tige téléscopique présente deux trous 33 à sa partie supérieure à travers lesquels passe le milieu du second axe d'articulation 5 afin d'articuler la jambe de force 3 par rapport à la plateforme 1. Le milieu de l'axe 32 est soudé au travers de l'extrémité inférieure de l'élément contenu inférieur 31 de la tige téléscopique. Les extrémités 34 de l'axe 32 sont destinées à être engagées dans une paire de crans 23 judicieusement choisie selon la pente du toit ou de l'élément d'échelle 6 pour assurer l'horizontalité de la plate-forme 1, ou à être engagées dans la paire de crans avant 24 lors du repliement de la jambe de force sur la poutrelle 2 et sous la plate-forme 1.The strut 3 is constituted by a composite telescopic rod 30-31, here of square section, and by a transverse axis 32. The upper hollow element 30 of the telescopic rod has two holes 33 at its upper part through which passes the middle of the second articulation axis 5 in order to articulate the strut 3 relative to the platform 1. The middle of the axis 32 is welded through the lower end of the lower content element 31 of the telescopic rod. The ends 34 of the axis 32 are intended to be engaged in a pair of notches 23 judiciously chosen according to the slope of the roof or of the ladder element 6 to ensure the horizontality of the platform 1, or to be engaged in the pair of front notches 24 during the folding of the strut on the beam 2 and under the platform 1.
L'horizontalité de la plate-forme 1 est également obtenue au moyen du réglage de la longueur de la tige téléscopique 30-31. Ce réglage est réalisé par exemple, comme illustrépar l'alignement d'une paire de trous transversaux 35 dans l'élément supérieur 30 avec l'une de paires de trous transversaux 36 dans l'élément inférieur 31 et en immobilisant l'é lément 31 dans l'élément 30 par un boulon 37 traversant les trous alignés 35 et 36 et par un écrou de blocage 38 vissé sur le boulon.The horizontality of the platform 1 is also obtained by adjusting the length of the telescopic rod 30-31. This adjustment is made, for example, as illustrated by the alignment of a pair of transverse holes 35 in the upper element 30 with one of pairs of transverse holes 36 in the lower element 31 and by immobilizing the element 31 in the element 30 by a bolt 37 passing through the aligned holes 35 and 36 and by a locking nut 38 screwed on the bolt.
Un coulisseau 7 est prévu pour bloquer les extrémités 34 de l'axe 32 dans les deux crans sélectionnés 23. Le coulisseau est une plaque pliée en U et glisse le long des longerons 20 et sous ces derniers. Les extrémités supérieures 70 du coulisseau 7 sont rabattues sur les longerons 20 tandis que les extrémités inférieures du coulisseau 7 forme deux encoches 71 dirigées vers l' entretoise inférieure 22. Après l'introduction des extrémités 34 en tenon de l'axe 32 dans les deux crans sélectionnés 23, le coulisseau 7 est descendu le long des longerons 20 et recouvre les deux crans 23, les coins des encoches 71 s'appuyant par gravité sur des parties de l'axé 32 entre les crans 23. Le coulisseau 7 verrouille ainsi la jambe de force 3 sur la poutrelle 2. Ceci empêche une levée de la plate-forme 1 puis une sortie de l'axe 32 de la poutrelle et donc un rabattement du plan de travail 10 par gravité vers le bas lorsque, par exemple, l'usager cogne l'ex trémité arrière de la plate-forme en montant sur l'échelle. On décrit maintenant les moyens de rotation 8 pour orienter la console par rapport à une échelle 6 lorsque l'axe longitudinal x'x de l'échelle est incliné d'un angle α par rapport au plan vertical X'X dans lequel doit être positionnée la console. Ceci est par exemple le cas où l'échelle 6 est posée le long d'une arête inclinée d'un toit ou le long de la gouttière d'une noue, comme montré à la Fig. 3.A slide 7 is provided to block the ends 34 of the axis 32 in the two selected notches 23. The slide is a plate folded in a U and slides along the side members 20 and under these. The upper ends 70 of the slider 7 are folded over the side members 20 while the lower ends of the slider 7 form two notches 71 directed towards the lower spacer 22. After the introduction of the pin ends 34 of the axis 32 in the two selected notches 23, the slide 7 is lowered along the side members 20 and covers the two notches 23, the corners of the notches 71 resting by gravity on parts of the axis 32 between the notches 23. The slide 7 thus locks the strut 3 on the beam 2. This prevents lifting of the platform 1 then an exit from the axis 32 of the beam and therefore a folding of the work surface 10 by gravity downwards when, for example, the user bumps the rear end of the platform while climbing on the ladder. We will now describe the rotation means 8 for orienting the console relative to a scale 6 when the longitudinal axis x'x of the scale is inclined at an angle α relative to the vertical plane X'X in which must be positioned console. This is for example the case where the ladder 6 is placed along an inclined edge of a roof or along the gutter of a valley, as shown in FIG. 3.
Les moyens de rotation 8 comprennent principalement une première plaque 80 et une seconde plaque 81 qui est fixée sous la poutrelle 2 entre les longerons 20 et qui est montée à rotation sur la première plaque 80.The rotation means 8 mainly comprise a first plate 80 and a second plate 81 which is fixed under the beam 2 between the side members 20 and which is rotatably mounted on the first plate 80.
La seconde plaque 81 est plate et rectangulaire et est soudée .entre les extrémités supérieures des longerons 20. Un trou d'articulation 82 est pratiqué dans la plaque 81 sur l'axe longitudinal de la poutrelle 2. Une lumière circulaireThe second plate 81 is flat and rectangular and is welded between the upper ends of the side members 20. A hinge hole 82 is made in the plate 81 on the longitudinal axis of the beam 2. A circular lumen
83 est ménagée de part et d'autre de cet axe longitudinal dans la plaque 81 sur un cercle ayant pour centre le trou 82. La lumière 83 peut être prévue au-dessus du trou 82 (Fig. 2) ou en dessous de celui-ci (Fig. 3) . L'extrémité supérieure 84 de la première plaque 80 est rabattue en U vers le bas pour former un crochet long transversal qui est crochetable sur un échelon 61 de l'échelle 6. Les largeurs des plaques 80 et 81 sont égales à celle de la poutrelle 2. La longueur de la surface rectangulaire de la plaque 80 s'appuyant contre l'autre plaque 81 est égale à l'entraxe standard de deux échelons 61. A la partie inférieure de la première plaque 80 sont soudés deux crochets 85. Dans la plaque 80 est également prévu un trou d'articulation 86 sur l'axe longitudinal. Le trou 86 est aligné avec le trou 82 pour être traversé par un axe d'articulation de préférence indémontable 9 reliant les deux plaques 80 et 81. L'axe 9 est formé par un boulon à écrou qui peut être serti ou soudé sur l'une des plaques, ou par un rivet creux serti ou moyen analogue. Un ergot fileté 87 est soudé sur l'axe longitudinal de la surface de la plaque 80 en regard de la plaque 81 et traverse la lumière 83. Un ensemble écrou-rondelle de blocage 89 monté sur l'ergot 87 permet de bloquer l'inclinaison choisie de la première plaque 80 par rapport à la seconde plaque 81 suite à une rotation autour de 1'axe 9.83 is formed on either side of this longitudinal axis in the plate 81 on a circle having the hole 82 as its center. The lumen 83 can be provided above the hole 82 (FIG. 2) or below it ci (Fig. 3). The upper end 84 of the first plate 80 is folded down in a U shape to form a long transverse hook which can be hooked on a rung 61 of the scale 6. The widths of the plates 80 and 81 are equal to that of the beam 2. The length of the rectangular surface of the plate 80 pressing against the other plate 81 is equal to the standard distance between two rungs 61. At the bottom of the first plate 80 are welded two hooks 85. In the plate 80 is also provided with an articulation hole 86 on the longitudinal axis. The hole 86 is aligned with the hole 82 to be crossed by a hinge pin which is preferably non-removable 9 connecting the two plates 80 and 81. The pin 9 is formed by a nut bolt which can be crimped or welded on the one of the plates, or by a crimped hollow rivet or similar means. A threaded lug 87 is welded on the longitudinal axis of the surface of the plate 80 opposite the plate 81 and passes through the lumen 83. A locking nut-washer assembly 89 mounted on the lug 87 makes it possible to block the chosen inclination of the first plate 80 relative to the second plate 81 following a rotation about the axis 9.
Les Figs . 3 et 4 montrent la console selon l'invention positionnée sur une échelle 6 inclinée d'un angle α . Pour positionner les éléments 1, 2, et 3 dans un plan vertical X'X, la première plaque 80 est crochetée par ses crochets 84 et 85 à deux échelons non horizontaux voisins 61 et la poutrelle 2 est alignée dans le plan vertical X'X par rotation autour de l'axe 9 et bloquée à cette position par serrage de l'ensemble 89 sur l'ergot 87. Puis le plan de travail 10 est levé vers l'horizontale en réglant la longueur de la tige téléscopique 30-31 qui est maintenue à la longueur choisie par le boulon 37 et l'écrou 38, et en encastrant les extrémités 34 de l'axe 32 dans deux crans 23 qui sont verrouillées par le coulisseau 7. Figs. 3 and 4 show the console according to the invention positioned on a scale 6 inclined at an angle α. To position the elements 1, 2, and 3 in a vertical plane X'X, the first plate 80 is hooked by its hooks 84 and 85 at two neighboring non-horizontal steps 61 and the beam 2 is aligned in the vertical plane X'X by rotation about the axis 9 and locked in this position by tightening the assembly 89 on the lug 87. Then the work surface 10 is lifted towards the horizontal by adjusting the length of the telescopic rod 30-31 which is maintained at the length chosen by the bolt 37 and the nut 38, and by embedding the ends 34 of the axis 32 in two notches 23 which are locked by the slide 7.

Claims

R e v e n d i c a t i o n s.R e v e n d i c a t i o n s.
1 - Console pliable notamment pour être accrochée à une échelle de toit, comprenant une plate-forme (1) , une poutrelle d'appui (2) sur l'échelle (6), des premiers moyens d'articulation (4) de la plate-forme (1) par rapport à la poutrelle (2), une jambe de force (3) comportant à l'une (31) de ses extrémités un axe transversal (32) s'ancrant dans des crans (23) de la poutrelle (2) et des seconds moyens d'articulation (5) de l'autre extrémité (30) de la jambe de force par rapport à la plate-forme (1), caractérisée en ce qu'elle comprend des moyens de rotation (8) crochetables à l'échelle (6) pour orienter la poutrelle (2) par rapport à l'échelle.1 - Foldable console in particular to be hung on a roof ladder, comprising a platform (1), a support beam (2) on the ladder (6), first articulation means (4) of the platform (1) relative to the beam (2), a strut (3) comprising at one (31) of its ends a transverse axis (32) anchoring in notches (23) of the beam (2) and second articulation means (5) of the other end (30) of the strut relative to the platform (1), characterized in that it comprises rotation means ( 8) hookable to the ladder (6) to orient the beam (2) relative to the ladder.
2 - Console conforme à la revendication 1, caractérisée en ce que les moyens de rotation (8) comprennent une première plaque (80) qui est montée à rotation autour d'un axe (9) solidaire de la poutrelle (2) et qui comporte au moins un crochet (84) crochetable à un échelon (61) de l'échelle (6).2 - Console according to claim 1, characterized in that the rotation means (8) comprise a first plate (80) which is rotatably mounted about an axis (9) integral with the beam (2) and which comprises at least one hook (84) which can be hooked onto a rung (61) of the scale (6).
3 - Console conforme à la revendication 2, caractérisée en ce que la première plaque (80) comporte au moins un autre crochet (85) crochetable à un autre échelon (61) de l'échelle (6). 4 - Console conforme à la revendication 2 ou 3, caractérisée en ce que la largeur de la première plaque (80) est inférieure à l'écart entre les montants (60) de l'échelle (6).3 - Console according to claim 2, characterized in that the first plate (80) comprises at least one other hook (85) hookable at another rung (61) of the ladder (6). 4 - Console according to claim 2 or 3, characterized in that the width of the first plate (80) is less than the distance between the uprights (60) of the scale (6).
5 - Console conforme à l'une des revendications 1 à 4, caractérisée en ce qu'elle comprend des moyens (83, 87, 89) pour bloquer à une orientation choisie la poutrelle (2) par rapport à l'échelle (6).5 - Console according to one of claims 1 to 4, characterized in that it comprises means (83, 87, 89) for locking in a chosen orientation the beam (2) relative to the scale (6) .
6 - Console conforme aux revendications 2 et 5, caractérisée en ce que la poutrelle (2) comporte une seconde plaque (81) qui est traversée par l'axe de rotation (9) et dans laσuelle est pratiquée une lumière (83) circulaire autour audit axe de rotation (9) et en ce que la première plaque (80) comporte un ergot (87) traversant ladite lumière (83) et blo que à ladite orientation choisie par un écrou (89) ou analogue sur la seconde plaque (81) .6 - Console according to claims 2 and 5, characterized in that the beam (2) has a second plate (81) which is crossed by the axis of rotation (9) and in laσuelle is made a light (83) circular around to said axis of rotation (9) and in that the first plate (80) comprises a lug (87) passing through said lumen (83) and blo as at said orientation chosen by a nut (89) or the like on the second plate (81).
7 - Console conforme à l'une des revendications 1 à 6, caractérisée en ce que la jambe de force (3) est une tige téléscopique (30, 31) et comporte des moyens (35, 36, 37, 38) pour bloquer la tige téléscopique à une longueur choisie.7 - Console according to one of claims 1 to 6, characterized in that the strut (3) is a telescopic rod (30, 31) and comprises means (35, 36, 37, 38) for blocking the telescopic rod to a chosen length.
8 - Console conforme à l'une des revendications 1 à 7, caractérisée en ce qu'elle comprend des moyens (7) pour verrouiller l'axe transversai (32) de la jambe de force (3) dans des crans choisis (23) de la poutrelle (2) .8 - Console according to one of claims 1 to 7, characterized in that it comprises means (7) for locking the transverse axis (32) of the strut (3) in selected notches (23) beam (2).
9 - Console conforme à la revendication 8, caractérisée en ce que les moyens de verrouillage (7) comprennent un coulisseau (7) monté à coulissement le long de la poutrelle (2) pour fermer les crans choisis (23) lorsqu'il bute contre l'axe transversal (32) de la jambe de force (3) . 9 - Console according to claim 8, characterized in that the locking means (7) comprise a slide (7) slidably mounted along the beam (2) to close the selected notches (23) when it abuts the transverse axis (32) of the strut (3).
PCT/FR1983/000168 1982-08-12 1983-08-11 Foldable bracket, particularly for a roof ladder WO1984000788A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8214065A FR2531742A1 (en) 1982-08-12 1982-08-12 FOLDABLE CONSOLE, IN PARTICULAR FOR ROOF SCALE

Publications (1)

Publication Number Publication Date
WO1984000788A1 true WO1984000788A1 (en) 1984-03-01

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ID=9276837

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Application Number Title Priority Date Filing Date
PCT/FR1983/000168 WO1984000788A1 (en) 1982-08-12 1983-08-11 Foldable bracket, particularly for a roof ladder

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EP (1) EP0101385A1 (en)
FR (1) FR2531742A1 (en)
WO (1) WO1984000788A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2528106A (en) * 2014-07-10 2016-01-13 Christopher Jones Seats and safety supports
CN117166800B (en) * 2023-11-02 2024-01-19 中铁城建集团第一工程有限公司 Externally hung protective frame and mounting process thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE493618C (en) * 1930-03-14 Martin Gerlach Tool table, especially for roofers
US2549638A (en) * 1946-09-12 1951-04-17 John C Rogghe Scaffold
US2802702A (en) * 1955-11-01 1957-08-13 Ray C Rose Swinging ladder seat
FR1332079A (en) * 1963-12-16
FR1357779A (en) * 1963-02-28 1964-04-10 Adjustable platform and adaptable to ladders
FR2292089A1 (en) * 1974-11-22 1976-06-18 Bertuletti Jean Platformed roof-ladder foldaway bracket - has hinged strut-supported platform and notched ladder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE493618C (en) * 1930-03-14 Martin Gerlach Tool table, especially for roofers
FR1332079A (en) * 1963-12-16
US2549638A (en) * 1946-09-12 1951-04-17 John C Rogghe Scaffold
US2802702A (en) * 1955-11-01 1957-08-13 Ray C Rose Swinging ladder seat
FR1357779A (en) * 1963-02-28 1964-04-10 Adjustable platform and adaptable to ladders
FR2292089A1 (en) * 1974-11-22 1976-06-18 Bertuletti Jean Platformed roof-ladder foldaway bracket - has hinged strut-supported platform and notched ladder

Also Published As

Publication number Publication date
FR2531742A1 (en) 1984-02-17
FR2531742B1 (en) 1985-05-24
EP0101385A1 (en) 1984-02-22

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