EP4619608A1 - Echelle à poste de travail repliable - Google Patents
Echelle à poste de travail repliableInfo
- Publication number
- EP4619608A1 EP4619608A1 EP23800485.7A EP23800485A EP4619608A1 EP 4619608 A1 EP4619608 A1 EP 4619608A1 EP 23800485 A EP23800485 A EP 23800485A EP 4619608 A1 EP4619608 A1 EP 4619608A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plane
- ladder
- floor
- workstation
- guardrail
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
- E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/39—Ladders having platforms; Ladders changeable into platforms
- E06C1/393—Ladders having platforms foldable with the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/18—Devices for preventing persons from falling
- E06C7/185—Devices providing a back support to a person on the ladder, e.g. cages
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
Definitions
- the invention relates to the field of ladders (possibly telescopic) equipped with a folding workstation.
- feeder we mean here a transportable device comprising a climbing plan.
- telescopic ladder we mean here a ladder whose climbing plane comprises at least two elements mounted to slide relative to each other.
- workstation we mean here a set comprising a guardrail and a floor.
- foldable here we mean the fact that the workstation can be in a compact transport or storage position, or in an deployed position in which a user can access or get off the workstation.
- Ladders of this type are used in particular in the building sector for formwork work, or in the field of civil engineering for work on electrical poles or pylons.
- Ladders equipped with a folding workstation are most often used for short-term work, and are designed to be portable.
- Ladders of this type are different in structure and use from those of the rolling platforms presented in standard NF EN 131 - 7, of the individual rolling platform (P I R) or individual light rolling platform (PI RL) type.
- individual rolling platforms include a rise plan and a support plan, as well as, where applicable, stabilizing feet.
- the support plane extends towards the front of the platform. The weight of the platform rests on the ground, by the feet of the climbing surface and the feet of the support surface.
- a ladder with a folding workstation is, in the deployed position of the workstation, supported on a structure.
- a ladder conventionally includes a support device against this structure.
- Such device is often referred to as a support cradle.
- the support cradle has wheels or rubber pads.
- Document FR3012510 (CDH, 201 5) presents a cradle for supporting a ladder against a pylon.
- Document EP3995665 (STAASAEKER, 2022) presents a spacer comprising wheels, for supporting a ladder against a facade.
- EP2454440 EASI, 2013).
- an individual rolling platform allows access to a workstation comprising a floor located at a maximum height of 2.5 m above the ground, according to standard NF P 93-352.
- a lightweight individual rolling platform allows access to a workstation including a floor at a maximum height of 1.5 m above the ground.
- the floor of the workstation is generally located at a height of around 3 to 6 meters.
- the unfolding of an individual rolling platform can be easily carried out by a single person, the feet of the lifting surface and the support surface ensuring stability to the platform during this unfolding.
- Document EP 1 783322 (TUBESCA, 2007) describes a ladder whose climbing plane comprises two sliding elements, the ladder being provided with a folding assembly comprising a floor and a guardrail.
- the floor is articulated at one level of the ascent plane, and is articulated to the longitudinal members of the ascent plane by two links.
- the guardrail comprises a lower rail and an upper rail, the two rails being connected by two lateral legs and each being articulated on the longitudinal members of the climbing surface.
- Each of the side legs is slidably mounted on an upright, by a support part comprising a lock. A pin carried by the lock slides in a groove in the upright.
- the ladder is placed inclined to the vertical, and the floor pivots by gravity to its horizontal position.
- the deployment of the position of work can be hampered by deposits, for example of coating or plaster, in the sliding grooves of the side legs, or on the pivot axes of the upper rail and the lower rail.
- the pivoting of the guardrail when manually pushing on the side legs involves eight joints and two sliding grooves, increasing the risk of blockage due to clogging. Pivoting by gravity of the floor may not be obtained, for the same reasons.
- Document FR2907493 (AUDINNOV, 2008) describes a ladder whose climbing plane includes two sliding elements, the ladder being provided with a folding workstation comprising a floor and a U-shaped frame forming a guardrail.
- the floor and the guardrail are each articulated on a bar of the climbing surface, and are connected by a connecting rod.
- the operator To deploy the workstation, the operator must climb onto the climbing surface, activate a lock with one hand and, with the other hand, lift the guardrail upwards or push the floor downwards.
- the ladder being supported against a wall during this maneuver, the pivoting of the floor can be blocked by a relief present on this wall, for example a window sill.
- the ladder may have been splashed with paint, cement, plaster or coating.
- Such deposits on the pivot axes of the floor or the guardrail imply greater manual efforts for the deployment of the workstation, these efforts being able to affect the stability of the ladder, with the risk of falling for the operator who result.
- Document FR291 8408 (AUDINNOV, 2009) describes a ladder provided with a workstation comprising a floor and a guardrail, the floor being articulated to a bar of the climbing plane and being connected by connecting rods to the guardrail.
- Each connecting rod is provided with a collar mounted sliding on the guardrail.
- To deploy the workstation the operator must climb onto the climbing surface and exert a force on the floor to make it pivot horizontally, this pivoting having to cause the movement of the connecting rods to the guardrail. The operator must check that the connecting rods are in position, and if not, slide the collars on the guardrail.
- the ladder has the disadvantages of that described in document FR2907493, the deployment of the workstation being moreover longer and complicated.
- An object of the invention is to remedy the drawbacks of the prior art, by proposing a ladder equipped with a folding workstation, the ladder offering better ergonomic and safety qualities, while being simple to install. use and offering great compactness in folded configuration.
- a ladder comprising a climbing plane having a pair of spars and rungs or bars transversely connecting the spars, the ladder comprising a folding workstation and a wall spacer, the workstation comprising a guardrail and a floor, the guardrail and the wall spacer forming an assembly articulated to the climbing plane, between a folded configuration in which the guardrail and the wall spacer are folded down towards the ascent plane and a deployed configuration for use of the workstation, the floor being articulated to the ascent plane between a folded configuration in which the floor is folded towards the ascent plane and a deployed configuration for use of the workstation work, the means of articulation to the rise plane of the assembly formed by the guardrail and the wall spacer being distinct and independent of the means of articulation to the rise plane of the floor.
- the deployment of the assembly formed by the guardrail and the wall spacer can thus be obtained before straightening the ladder, after having deployed the floor.
- the user can deploy the workstation in complete safety, with both hands available for maneuvers, without the weight of the ladder being a hindrance.
- the workstation When the workstation has been placed in the deployed configuration, the user can tilt the climbing surface and place the ladder in its position of use.
- the guardrail includes an access gate to the workstation.
- the gate may comprise one or more bars, or even a panel extending over the entire width of the workstation, the gate opening upwards or towards the inside or outside of the workstation. work.
- the guardrail in the deployed configuration of the workstation, comprises two vertical uprights and two horizontal uprights, the vertical and horizontal uprights extending on either side of the rise plane, each vertical upright being slidably mounted on a guide fixed to a spar of the rise plane, the guide being pivotable transversely relative to the spar of the rise plane, each horizontal upright being pivotally mounted to a vertical upright, each horizontal upright being pivotally mounted to a spar of the plane of rise.
- the vertical and horizontal uprights of the guardrail are advantageously arranged parallel and at a short distance from the longitudinal members of the climbing plane.
- the ladder can thus be transported or stored in a very compact configuration.
- a guide part is slidably mounted on each of the longitudinal members of the rising plane, each guide part being connected to the wall spacer by a connecting bar, each guide part being connected to a vertical upright of the guardrail by a connecting tube, the sliding of each guide piece on its support beam, between a first extreme position and a second extreme position causing the movement of the assembly formed by the guardrail and the spacer wall between its deployed configuration for use of the workstation and its folded configuration.
- the manual operation of the two guide parts is advantageously carried out before straightening the climbing plane, the ladder being extended on the ground.
- the user can thus ensure the perfect deployment of the floor and the assembly formed by the guardrail and the wall spacer, before straightening the ascent plane.
- the user can then climb onto the riser and begin their work, without having to carry out any other intervention for the deployment of the workstation.
- locking means are capable of maintaining at least one guide piece in its first extreme position, in which the assembly formed by the guardrail and the wall spacer is in its deployed configuration.
- locking means are capable of maintaining at least one guide part in its second extreme position, in which the assembly formed by the guardrail and the wall spacer is in its folded configuration.
- the locking means are advantageously locking hands, the actuation of which is carried out manually against a return means, such as for example a traction or torsion spring.
- the floor is articulated, via a front edge, to the rise plane, in transverse rotation, the floor being in its deployed configuration supported by a rear edge on a support tube, the support tube being articulated in transverse rotation to the plane of mounted, a guide being slidably mounted on the support tube, the guide being mounted in transverse rotation to the rear edge of the floor.
- a shock absorber is placed between the support tube and the floor.
- the rise plane comprises at least two parts mounted sliding relative to each other.
- two stabilizers are articulated to the rise plane. These stabilizers form support legs or struts.
- the stabilizers are advantageously telescopic, and comprise for example a tube sliding in a sleeve, means allowing the length of the stabilizers to be adjusted, for example holes in the tube facing an orifice in the sleeve for the passage of a pin, or blocking the sliding tube by friction using a part linked to the sleeve.
- FIG. 1 is a perspective view of a ladder equipped with a folding workstation, the ladder being shown in the deployed configuration;
- FIG. 2 is a perspective view of the workstation of the ladder shown in Figure 1;
- FIG. 3 is a perspective view of the workstation shown in Figure 1, illustrating more particularly the guardrail;
- - Figure 4 is a side view of the ladder of Figure 1, shown in a compact folded configuration, for storage or transport;
- - Figure 5 is a side view of the upper part of the ladder shown in Figure 1, the workstation being in the deployed configuration;
- FIG. 6 is a side view of the upper part of the ladder shown in Figure 1, the assembly formed by the guardrail and the wall spacer being in an intermediate folded position, the floor being in its configuration deployed;
- FIG. 7 is a side view of the upper part of the ladder shown in Figure 1, the assembly formed by the guardrail and the wall spacer being in its folded configuration, the floor being in its deployed configuration;
- FIG. 8 is a side view of the upper part of the ladder shown in Figure 1, the floor being in an intermediate folded position, the assembly formed by the guardrail and the wall spacer being in its configuration deployed;
- FIG. 9 is a side view of the upper part of the ladder shown in Figure 1, the floor being in its folded configuration, the assembly formed by the guardrail and the wall spacer being in its deployed configuration ;
- FIG. 10 is a detailed view of the support of the floor on its support, in the deployed configuration of the floor;
- FIG. 1 1 is a detailed view of the locking means of the assembly formed by the guardrail and the wall spacer.
- Figure 1 shows a telescopic ladder equipped with a folding workstation.
- Ladder 1 includes a climbing surface 2, two stabilizers 3, 4, and a folding workstation 5. Each of the two stabilizers 3, 4 is articulated to the rise plane 2 by a brace 6, 7.
- the ascent plane 2 comprises an upper part 8 slidably mounted on a lower part 9.
- the ascent plane 2 thus comprises two planes.
- the rise plane comprises more than two planes, for example three to five planes, allowing high working heights to be reached, for example more than ten meters.
- the ladder advantageously includes a parachute allowing the elements of the climb plan to be locked and unlocked.
- the upper part 8 comprises two substantially parallel beams 10 and ten crossbeams 11 fixed on the beams 10 (nine crossbeams 11 for access to the workstation 5 and a last crossbeam 11 in upper end of the rise plane 2, reinforcing the rigidity), the lower part 9 comprising two substantially parallel spars 12 and ten crosspieces 13 fixed on the spars 1 2.
- the upper part and/or the lower part of the rise plane comprises less than ten sleepers, for example between four and seven sleepers.
- Ladder 1 is equipped with means to reduce the risk of slipping.
- each stabilizer 3, 4 is provided with a non-slip pad 14, and each of the two spars 12 of the lower part 9 of the rise plane 2 is provided with a non-slip pad 1 5
- the pads 14, 15 are for example made of elastomeric material.
- the pads 1 5 of the climbing plane 2 comprise a lower part of contact with the ground, and an upper part for attachment to the longitudinal members 1 2.
- the lower part of the pads 1 5 is made of a flexible material
- the upper part of the pads is made of a rigid material, the pads 15 being manufactured using a bi-material process.
- the spars 1 2 are formed from hollow sections, and the shoes 1 5 fit the base of the spars or are mounted for force insertion into the spars 1 2.
- the pads 14 of the stabilizers 3, 4 comprise a lower part for contact with the ground, and an upper part for attachment to the stabilizers 3, 4.
- the lower part of the pads 14 is made of a flexible material
- the upper part for fixing the pads is made of a rigid material, the pads 14 being manufactured using a bi-material process.
- each stabilizer 3, 4 comprises a tubular body and a lower profile slidably mounted by relative to the body, the lower profile carrying a pad 14.
- the lower profile is hollow and the pad 14 is mounted in insertion into the lower profile. In other embodiments, the pad 14 fits the base of the lower profile.
- each stabilizer 3, 4 comprises a lower tubular body and an upper profile mounted sliding relative to the body, the pad 14 being mounted for insertion into the lower tubular body or fitting the base of the lower tubular body .
- the pads 1 5 are mounted articulated to the longitudinal members 1 2.
- Ladder 1 is advantageously provided with means reinforcing its stability in the deployed position.
- the ascent plane is provided at its base with a stabilizing bar, in particular telescopic, or with crutches.
- the spars of the rise plane are further apart from each other at the base of the rise plane.
- each stabilizer 3, 4 is articulated by a brace 6, 7 to a spar 10 of the upper part 8 of the rise plane 2.
- each stabilizer is articulated by a brace to a spar of the lower part of the rise plane.
- the lower profile is retracted into the body and the brace 6 is substantially parallel to the spar 10 of the climbing plane.
- the crosspieces 1 1, 13 form bars or rungs serving as steps for going up or down.
- the crosspieces 11, 13 are substantially equidistant.
- the rise plane 2 is formed by the assembly of metal spars and crosspieces, made of steel or aluminum alloy.
- the assembly of the sleepers to the spars can be carried out by welding, screwing, stapling, or even by nesting with the installation of force-locking parts, to lock the sleepers in their nesting position.
- the assembly of the crosspieces to the spars can be carried out by expansion or crimping.
- the rungs are provided, on their two lateral ends, with at least one constriction which engages in the holes in the spars.
- the end of these constrictions projects from the external face of the spars and is deformed by crimping, or even by rolling, tuliping, or stamping.
- Simple crimping leads to deformation of the constriction on the external face of the spar.
- the double crimping carried out both on the external face and on the internal face of the spar, allows greater mechanical resistance than simple crimping, since it allows tightening on either side of the wall of the spar.
- the expansion is for example mechanical and includes a barrel, rollers or needles and a conical spindle.
- the conical pin (or dudgeon tail) advances inside the profile forming the crosspiece.
- This spindle is rotated by an electric or pneumatic expanding machine.
- the spindle increases the circumference of the rollers while rotating them.
- the rollers thus cause the expansion of the profile forming the crosspiece.
- This expansion is carried out while the profile forming the crosspiece has been introduced into an opening made in the spar. It is thus possible to form beads on the crosspiece, these beads being placed on either side of at least one of the walls of the spar.
- the assembly of the sleepers to the spars is advantageously carried out by rolling, bolting, tuliping, crimping, leading to a plastic deformation of the two ends of the sleepers, this plastic deformation being advantageously ensured simultaneously on the two end parts of the sleepers.
- the spars 10, 12 forming uprights of the raising plane 2 are of rectangular cross section and the crosspieces 11, 13 are of square cross section.
- cross section we designate here a section following a plane perpendicular to the direction of slenderness of an element.
- the crosspieces are of circular, oval, rectangular or polygonal cross section, the longitudinal members being of circular, oval or polygonal section.
- the sleepers advantageously include, in their part located between the spars, reliefs such as streaks or folds. These reliefs make it possible in particular to prevent the user's foot or hand from slipping when ascending or descending the ladder 1.
- these reliefs are undulations in the thickness of the profile forming the crosspiece, the thickness of this profile, measured in cross section of the crosspiece, being substantially constant.
- At least part of the crosspieces of the climbing surface are provided with an added anti-slip material, such as an elastomer strip, or even with an embossed, ribbed, perforated metal plate. , in expanded metal or even in grating.
- an added anti-slip material such as an elastomer strip
- an embossed, ribbed, perforated metal plate in expanded metal or even in grating.
- the ladder is formed by assembling a non-conductive material, for example a composite material with mineral fiber such as fiberglass, or with plant fiber such as flax fiber.
- a non-conductive material for example a composite material with mineral fiber such as fiberglass, or with plant fiber such as flax fiber.
- the profiles forming the spars and crosspieces of the riser plane are for example pultruded.
- the folding workstation 5 is permanently fixed on the ladder 1, in the upper part.
- the folding workstation is attached to the ladder, in a removable manner.
- the workstation 5 includes a guardrail 18, a floor 19 and a wall spacer 20.
- the workstation 5 comprises folded or curved tubular elements, for example made of steel or aluminum alloy.
- the tubes forming the workstation are advantageously made of insulating material, such as composite material, for example with a polymer matrix and fiber reinforcement. glass.
- the guardrail 18 and the wall spacer 20 form a foldable and unfoldable assembly in one movement, independent of the folding and unfolding movement of the floor 19.
- floor 19 we now describe floor 19 in more particular.
- the floor 19 is advantageously non-slip and has, for example, an embossed, ribbed or perforated surface.
- the floor 19 can be made of metal, in particular aluminum alloy or steel, or even of composite, for example with a polymer matrix and fiberglass reinforcement, or even of wood.
- the floor 19 advantageously includes a plinth 21.
- the plinth 21 comprises three sections 22, 23, 24 substantially perpendicular to the floor 19, namely two lateral sections 22, 23 and a junction section 24.
- the floor 19 is substantially horizontal and the junction section 24 is substantially vertical and arranged opposite the rise plane 2.
- the plinth 21 limits the risks of falling objects such as, for example, tools which would be on the floor 1 9.
- the plinth 21 forms a stop for the user's feet, limiting the risks of falling.
- the height of the plinth 21 is advantageously of the order of ten centimeters or more than ten centimeters.
- the floor 19 and the plinth 21 come from material, for example from injection molding.
- the plinth is fixed to the floor.
- the plinth is articulated to the floor between a compact position, in which the plinth is substantially parallel to the floor, and a deployed position of use.
- the width of the floor 19 is for example forty centimeters. In the embodiment shown, the floor 19 is substantially square.
- the floor is rectangular.
- the floor 19 rests on a support 25.
- the support 25 comprises a curved tube, articulated in rotation to the longitudinal members 10 of the upper part 8 of the rise plane.
- a stopper 26 is placed between the curved tube of the support 25 and the floor 19. This stopper 26 can be carried by the curved tube of the support 25 or be carried by the floor 19.
- the stopper 26 is formed of two shock absorbers 27, 28, advantageously made of elastomeric material, arranged between the floor 19 and the curved tube of the support 25. These shock absorbers 27, 28 are for example fixed by screwing to the curved tube of the support 25.
- shock absorbers 27, 28 ensures gentle and noiseless contact of the floor 19 on the support 25, when unfolding the workstation.
- shock absorbers 27, 28 ensures comfort for the user of the ladder 1, during his movements in the workstation 5, the shock absorbers 27, 28 absorbing the vibrations and pressures exerted on the floor 19.
- the floor 19 is articulated in rotation to the support 25.
- the curved tube of the support 25 comprises two guides 29, 30 slidably mounted on the curved tube of the support 25, each of the two guides 29, 30 being pivotally mounted on a lateral section 22, 23 of the plinth 21.
- the floor 19 is articulated in rotation to the rise plane 2.
- the floor 19 carries two knuckles 31, 32 receiving a crosspiece 33 of the raising plane 2.
- knuckle we designate here a part comprising a reservation in which the crosspiece 33 forming an articulation axis passes.
- the knuckles 31, 32 are for example fixed to the floor 19 by screwing, welding, or riveting.
- a mechanical lock for example a pin, ensures that the floor is maintained in the deployed position.
- the folding of the floor 19 is obtained by the sliding of the guides 29, 30 on the support 25, the rotation of the floor 19 relative to the guides 29, 30, the rotation of the floor 19 relative to the crosspiece 33, and the rotation of the support 25 relative to the longitudinal members 10 of the rise plane 2.
- the floor 19 gradually passes from a substantially horizontal position to a storage position, in which the floor 19 is positioned between the longitudinal beams 10 of the lifting plane 2.
- the curved tube of the support 25 is substantially parallel to the longitudinal beams 10 of the rise plane.
- the wall spacer 20 comprises a plate 34 placed between two curved tubes 35, 36.
- the plate 34 is substantially horizontal, and arranged substantially at height of the pelvis of a person located at workstation 5.
- Plate 34 allows the user to place tools, pots or buckets.
- the plate includes housings whose shapes are adapted to specific tools.
- Each of the curved tubes 35, 36 carries a support member 37, 38 such as a wheel or a skate, allowing the ladder 1 to be supported against a facade or a wall.
- the wall spacer is of the telescopic type, allowing adjustment of the distance between the workstation and the facade or the wall against which the ladder is supported.
- the wall spacer includes an accessory allowing support against a post.
- the curved tubes 35, 36 are articulated in rotation to the longitudinal beams 10 of the rise plane 2.
- the guardrail 18 comprises a gate 40 articulated on two vertical uprights 41, 42.
- the gate 40 comprises a lower bar 43, an upper bar 44 and a connecting plate 45 articulated to the upper bar 44 and at the lower bar 43.
- a connecting yoke 46 connects the lower bar 43 and the plate 45.
- a connecting yoke 47 connects the upper bar 44 and the plate 45.
- the lower bar 43 is pivotally mounted on a hinge yoke 48 fixed on a vertical upright 41.
- the upper bar 44 is pivotally mounted on a hinge yoke 49 fixed on the vertical upright 41.
- the upper and lower bars 43, 44 are substantially horizontal and parallel.
- the free end of the lower bar 43 is then resting on a support yoke 48a mounted on the second vertical upright 42.
- the free end of the upper bar 44 is then resting on a support yoke 49a mounted on the second vertical upright 42.
- the articulation yokes 48, 49, and the support yokes 48a, 49a are for example formed by assembling parts made of polymer material, the assembly of the parts and the mounting of the yokes on the uprights 41, 42 being for example carried out by screwing .
- the assembly formed by the lower bar 43, the upper bar 44, and the connecting plate 45 can be moved manually by pivoting.
- the two bars 43, 44 are brought into a substantially vertical position.
- the return to the closed position of the gate 40 is ensured by the own weight of the assembly formed by the bars 43, 44 and the connecting plate 45.
- the opening of the gate 40 is thus carried out substantially in a vertical plane, without the gate 40 being driven towards the inside of the work station 5, or towards the front of the rise plane 2.
- a return means such as for example a torsion spring ensures automatic closing of the gate.
- a locking device ensures that the lower bar 43 and/or the upper bar 44 is maintained in the horizontal closed position of the workstation 5.
- the bars 43, 44 of the gate 40 are articulated to the vertical upright located to the left of the climbing plane 2.
- the bars 43, 44 of the gate 40 are articulated to the upright located to the right of the rise plane 2.
- the gate 40 is formed of an assembly forming a single leaf, extending over the entire width of the workstation 5.
- the gate comprises two assemblies each extending over a portion of the width of the workstation.
- the gate comprises bars articulated on the vertical upright located to the right of the rise plane, and further comprises bars articulated on the vertical upright located to the left of the ascent plane.
- the gate is articulated to one of the vertical uprights 41, 42 and opens towards the inside of the workstation.
- the gate opens as the user passes, to close behind him, advantageously automatically, by the weight of the gate and if necessary by a return means.
- the gate is hinged to one of the vertical uprights 41, 42 and opens towards the outside of the workstation.
- Each vertical upright 41, 42 is slidably mounted on a guide 50, each guide 50 being pivotally mounted on a spar of the rise plane 2.
- Each vertical upright 41, 42 is also articulated to a horizontal upright 51, 52, each horizontal upright 51, 52 being articulated to a spar 10 of the rise plane 2.
- the workstation 5 is provided with two guide parts 60, each of these two guide parts 60 being slidably mounted on a spar 10 of the lifting plane 2.
- Each guide piece 60 is connected to the wall spacer 20 by a connecting bar 61.
- Each guide piece 60 is connected to a vertical upright 41, 42 by a connecting tube 62.
- a locking device is manually activated.
- a locking hand 63 is unlocked, on each side of the rising plane 2, the locking hand 63 being held in the locked position by a return means such as a spring. Locking is for example obtained by passing one end of the locking hand 63 through a hole in the spar. . Alternatively, locking is obtained by friction.
- the locking hand 63 is pivoted around its main axis and is then inserted into a housing 64, making it possible to maintain the locking hand 63 in the open position, during the sliding of the guide part 60.
- the guide parts 60 are slid along the longitudinal members 10 of the lifting plane 2.
- the wall spacer 20 pivots to place itself in a plane substantially parallel to the rise plane 2.
- the vertical uprights 41, 42 pivot relative to the longitudinal members 10 by sliding in the guides 50.
- the vertical uprights 41, 42 are arranged in a plane substantially parallel to the rise plane 2.
- a third step locking of the ladder 1 in the folded position is ensured, by actuation of the locking hands 63.
- the locking hand 63 is pivoted around its main axis, and the main axis of the locking hand 63 is housed in a hole in the spar 10 of the rise plane , ensuring blocking.
- the pivoting of the locking hand is done automatically to one or the other or both extreme positions.
- a work space is delimited laterally by the upper end parts of the two beams 1 0. This work space is secure, in particular with regard to the risk of falling, at different heights of the user's body.
- a first security, at the height of the user's feet, is provided by the plinth 21.
- a second security, at the height of the user's legs, is provided by the lower bar 43 of the gate 40 and by the end parts of the two longitudinal members 10.
- a third security, at the height of the user's pelvis, is provided by the upper bar 44 of the gate 40, by the two amounts horizontals 51, 52 of the guardrail 18, and by an upper crosspiece 53.
- the work space is thus completely secured, over 360°, and therefore against the risks of falling forward, falling sideways or falling backwards.
- the workstation is provided with means preventing the accidental opening of the gate towards the outside, when the user present in the workspace leans on the gate.
- the floor 19 can be placed manually in the deployed position.
- the ladder 1 is then supported on the ground, at the base of the longitudinal members of the climbing surface 2 (where the skids 1 5 are located), and by the support 25 of the floor 1 9.
- the user can then manually deploy the assembly formed by the guardrail 18 and the wall spacer 20.
- the support members 37, 38 such as wheels can come to bear on the ground.
- the deployment of the assembly formed by the guardrail and the wall spacer is thus obtained while ladder 1 is on the ground.
- the user can deploy the workstation in complete safety, with both hands available for maneuvers, without the weight of ladder 1 being a hindrance.
- the user can tilt the lifting surface and place the stabilizers 3, 4 in support of the ground.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2211844A FR3141962B1 (fr) | 2022-11-15 | 2022-11-15 | Echelle à poste de travail repliable |
| PCT/EP2023/081225 WO2024104868A1 (fr) | 2022-11-15 | 2023-11-08 | Echelle à poste de travail repliable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4619608A1 true EP4619608A1 (fr) | 2025-09-24 |
Family
ID=84820123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23800485.7A Pending EP4619608A1 (fr) | 2022-11-15 | 2023-11-08 | Echelle à poste de travail repliable |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4619608A1 (fr) |
| FR (1) | FR3141962B1 (fr) |
| WO (1) | WO2024104868A1 (fr) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2892146B1 (fr) | 2005-10-14 | 2007-12-14 | Audinnov Soc Par Actions Simpl | Dispositif du type escabeau / echelle de securite constitue de deux elements et de moyens assurant la stabilite, et possedant un poste de travail integre |
| FR2893079B1 (fr) | 2005-11-04 | 2009-02-13 | Tubesca Sa | Echelle a plate-forme et tubes garde-corps repliables, notamment pour les echelles coulissantes. |
| FR2907493B1 (fr) | 2006-10-20 | 2008-12-12 | Audinnov Soc Par Actions Simpl | Echelle coulissante de securite pour travail a grande hauteur |
| FR2918408B1 (fr) | 2007-07-05 | 2009-09-11 | Audinnov Soc Par Actions Simpl | Echelle avec plateforme sommitale permanente |
| FR2926590B1 (fr) | 2008-01-23 | 2013-01-18 | Duarib | Poste de travail et dispositif pour le travail en elevation |
| FR2927649B1 (fr) | 2008-02-18 | 2010-02-19 | Aud Innov | Equipement d'ascension avec rehausseur integre |
| GB0912330D0 (en) | 2009-07-16 | 2009-08-26 | Baglin Neil E | Ladder usage |
| FR2990988B1 (fr) | 2012-05-28 | 2014-05-23 | Aud Innov | Dispositif de stabilisation d'une echelle par des jambes telescopiques |
| FR3012510B1 (fr) | 2013-10-31 | 2015-12-18 | Cdh Group | Echelle equipee d'un poste de travail articule verrouillable en configuration deployee au moyen d'un mecanisme de compas |
| SE1651198A1 (en) | 2016-09-07 | 2018-03-08 | Vare Invent AB | Platform ladder apparatus |
| CN207960460U (zh) * | 2018-03-09 | 2018-10-12 | 创智国际五金集团有限公司 | 平台梯 |
-
2022
- 2022-11-15 FR FR2211844A patent/FR3141962B1/fr active Active
-
2023
- 2023-11-08 EP EP23800485.7A patent/EP4619608A1/fr active Pending
- 2023-11-08 WO PCT/EP2023/081225 patent/WO2024104868A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024104868A1 (fr) | 2024-05-23 |
| FR3141962B1 (fr) | 2025-01-03 |
| FR3141962A1 (fr) | 2024-05-17 |
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