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)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9276837

Family Applications (1)

Country Status (3)

Families Citing this family (2)

Citations (6)

• 1982
  • 1982-08-12 FR FR8214065A patent/FR2531742A1/fr active Granted
• 1983
  • 1983-08-11 EP EP83401651A patent/EP0101385A1/fr not_active Withdrawn
  • 1983-08-11 WO PCT/FR1983/000168 patent/WO1984000788A1/fr unknown

Patent Citations (6)

Also Published As

Similar Documents

Legal Events