EP0682734B1 - Dispositif servant a grimper - Google Patents

Dispositif servant a grimper Download PDF

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Publication number
EP0682734B1
EP0682734B1 EP94905791A EP94905791A EP0682734B1 EP 0682734 B1 EP0682734 B1 EP 0682734B1 EP 94905791 A EP94905791 A EP 94905791A EP 94905791 A EP94905791 A EP 94905791A EP 0682734 B1 EP0682734 B1 EP 0682734B1
Authority
EP
European Patent Office
Prior art keywords
framework
hoist
operator
ladder
platform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94905791A
Other languages
German (de)
English (en)
Other versions
EP0682734A1 (fr
Inventor
David Lynton Jephcott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EDDISON INTERNATIONAL Ltd
Original Assignee
ScootAbout International Ltd
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
Priority claimed from GB9302283A external-priority patent/GB2274826B/en
Application filed by ScootAbout International Ltd filed Critical ScootAbout International Ltd
Priority to EP97202968A priority Critical patent/EP0823516A3/fr
Publication of EP0682734A1 publication Critical patent/EP0682734A1/fr
Application granted granted Critical
Publication of EP0682734B1 publication Critical patent/EP0682734B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E04G5/10—Steps or ladders specially adapted for scaffolds
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/20—Multi-stage bedsteads; e.g. bunk beds; Bedsteads stackable to multi-stage bedsteads
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/166—Landings, receiving 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
    • E04G5/00—Component parts or accessories for scaffolds
    • 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
    • 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
    • E06C1/397—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 characterised by having wheels, rollers, or runners
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/12—Lifts or other hoisting devices on ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
    • E06C9/12—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members laterally displaceable

Definitions

  • This invention relates to an apparatus for escalading.
  • an apparatus for stacking and destacking items on warehouse shelves includes an upwardly extending framework and a goods hoist including a load supporting means secured in the framework.
  • the goods hoist is moveable vertically and horizontally on the framework, and includes a number of suckers for picking up items from the top of a stack, moving them laterally off the shelving against which the apparatus stands and lowering them to e.g. a run-out conveyor disposed at ground level.
  • the apparatus of DE-A-1292581 is dedicated to one particular task, and moreover suffers the disadvantage that the goods hoist is for the most part remote from the position at which the operator controls the apparatus. Accordingly, the operator has to employ further means such as a ladder fixed to the framework in order to assess the goods being moved by the goods hoist.
  • US-A-4199041 discloses a ladder that can be fixed to a bunk bed, by means of hooks that overhang the top rail of the bed.
  • the ladder of US-A-4199041 is intended to remain in a fixed position relative to the bed rail when in use, and is simply removable for storage purposes. Accordingly, a user may only access one location by climbing to the top of the ladder disclosed in this document.
  • US-A-1444759 discloses a library-type ladder to which a height-adjustable platform is slidably secured.
  • this apparatus requires a permanent rail to be secured e.g. to library shelves next to which the library ladder is intended to run.
  • the library shelves are firmly secured and of a robust construction; moreover, the ladder itself and the rail on which it is supported are intended only to carry light loads.
  • US-A-5067587 discloses an access platform e.g. for gaining access to street lamps.
  • This apparatus includes two load platforms that are moveable vertically on the apparatus framework, to raise and lower workmen and materials relative to a working location.
  • the apparatus of US-A-5067587 discloses stabiliser means whereby the apparatus is freestanding.
  • the stabilisers are such that the lateral locations of the load platforms are fixed once the stabilisers have been actuated. If it is required to reach a position displaced laterally from the load platforms, it is necessary for all operators and materials to be taken off the apparatus, the stabilisers to be disengaged, the apparatus to be wheeled to a new location, the stabilisers to be reengaged and the operators and materials to be re-loaded onto the load platforms.
  • US-A-4378860 discloses an apparatus including an upwardly extending framework; a moveable hoist for an operator secured in the framework; and a goods hoist including a load supporting means, the operator hoist being moveable horizontally on the framework and the goods hoist being selectively moveable vertically and horizontally on the framework.
  • the apparatus is supported by means of cables that are themselves secured to e.g. a rail or girder extending along the top of a wall of a building.
  • the apparatus of US-A-4378860 cannot be used e.g. on buildings that taper inwardly towards their tops; on buildings having overhanging structures beneath the top rail or girder; on unstable or partly completed structures; or indeed on buildings the construction of which has not yet been commenced.
  • the primary purpose of the apparatus of US-A-4378860 is to permit the application of cladding panels to the exterior of steel framed buildings, after the steel frames have been fully completed.
  • DE-A-3838283 describes an external facade frame with a lift and a ladder.
  • the frame is modular and consists of horizontal members on which the ladder is moveable.
  • the frame is supported by ground supports and by horizontal supports fixed to the building facade.
  • an apparatus for escalading comprising
  • An advantage of this apparatus is that the goods hoist may be lifted to a desired level on the apparatus for escalading, and a user of the apparatus may climb or be raised unhindered to that level before loading or unloading the goods hoist, in complete safety.
  • the apparatus is useable in a greater range of situations than the prior art devices.
  • the arrangement of the invention has numerous additional advantages. Firstly, the optional inclusion of a ladder in the apparatus utilises conventional technology which is cheap and easy to manufacture.
  • the securing of an operator hoist or ladder and a goods hoist in a framework means that the apparatus can be built as a discrete item, for easy attachment to a further structure.
  • the apparatus may include means for securing the framework to a further structure.
  • This arrangement allows the apparatus to be used, e.g., in conjunction with fixed warehouse shelving.
  • Preferred embodiments of the invention include means for securing the framework to a ceiling. This feature allows the apparatus to be secured in front of, e.g., unsafe or incomplete structures.
  • the height and/or the length of the framework are adjustable. These features improve the versatility of the apparatus.
  • the goods hoist and the operator hoist or ladder are rigidly interconnected. It has been found to be particularly advantageous for the goods hoist to be moveable with the operator hoist or ladder on the framework.
  • the framework may preferably include a guide rail or track and the ladder may include means co-operating with the guide rail or track to permit lateral movement of the ladder on the framework. This arrangement has been found to be the most effective for providing lateral movement of the ladder on the framework.
  • the framework may include a guide rail or track and the operator hoist includes means co-operating with the guide rail or track to permit lateral movement of the operator hoist on the framework.
  • the goods hoist may include means for co-operating with the guide rail or track to permit lateral movement of the goods hoist on the framework.
  • This feature is particularly advantageous in some embodiments wherein the goods hoist and the ladder are rigidly interconnected. (It is then desirable to ensure that lateral movements of the hoist and the ladder are coordinated one with the other.)
  • the operator hoist may include an upwardly extending member; an operator platform loosely captive relative to the member; and means whereby the platform may be driven along the member.
  • the goods hoist may include an upwardly extending member having a channel therein; a load platform constrained to move along the member with a part engaged in the channel; and drive means whereby the platform may be driven along the member.
  • the upwardly extending member includes a projection adapted to engage a part of the load platform.
  • the apparatus comprises a pair of ladders or operator hoists secured on the framework. This allows the apparatus to be highly versatile.
  • the ladders or operator hoists are interconnected by e.g. the load supporting platform of a common goods hoist.
  • This version of the invention is particularly suitable for use in warehousing where elongate objects are stored on shelves, since the load supporting means of the goods hoist may be sized adequately to raise and lower such elongate components.
  • the apparatus may include a harness secured to the or a ladder or operator hoist, whereby a user of the apparatus may be prevented from falling from the apparatus.
  • the goods hoist may be arranged to be inoperative unless the harness is fastened about a user of the apparatus.
  • an apparatus 10 for escalading the apparatus including a pair of goods hoists 20.
  • the apparatus 10 includes a rectangular framework 11.
  • Framework 11 consists of a series of square or rectangular section members secured to one another in a rectangle.
  • the height of the rectangle is adjustable by means of the members 11a (which constitute the upright ends of the rectangle) being adjustable in length.
  • the members 11a being constituted by pairs of members, one of which is hollow, of differing cross sectional dimensions.
  • the smaller of the two members 11a at each end of the framework 11 is adapted to slide into the larger of the two members in the manner of a telescope.
  • Means may be provided for locking the members lia to give rise to a desired overall height of the framework.
  • the members 11b interconnecting the upright members 11a may be adjusted by means of similar mechanisms, whereby the length of the framework 11 may also be adjusted.
  • the feature permitting adjustment of the size of the framework may be dispensed with.
  • Such an embodiment could be manufactured as a bespoke item, according to the requirement of a user thereof.
  • a pair of ladders 12a, 12b is secured on the framework 11.
  • the ladders 12a, 12b are of conventional design, except that the upper ends 13 of the respective ladder uprights are formed into hook-like projections.
  • the projections 13 hook over the top edge of the upper member 11b.
  • the undersides of the hoock-like projections 13 are shaped to be complementary to the upper surface of upper member 11b, whereby the ladders 12a, 12b are retained captive on the framework 11 when the framework 11 is placed in an upright position as shown.
  • Suitable bearings are in the embodiments shown secured interposed between the undersides of the hook-like projections 13 and the upper surface of upper member 11b.
  • the ladders 12a, 12b are readily slidable from side to side along the framework upper member 11b.
  • the bearings may be secured in the upper surface of the member 11b.
  • the lower ends 14 of the ladder uprights are shaped similarly to the upper ends 13, and hook under the lower surface of the lower member 11b.
  • Bearings may be secured interposed between the upper surfaces of the hook-like projections 14 and the lower surface of the lower member 11b, whereby the ladders 12a, 12b are retained captive on the framework 11. It will thus be appreciated that the ladders 12a, 12b may freely be moved from side to side on the framework 11. The securing of the ladders 12a, 12b at both the top and bottom ends thereof ensures the ladders are secure and stable on the framework 11.
  • the ladders 12a, 12b may be removed from the framework simply by sliding them off one or other end thereof.
  • stops may be added e.g. in the form of upwardly and downwardly projecting extensions of the side members 11a, to prevent the ladders from running off the ends of the framework 11. Such stops may be removable.
  • the further uprights 21a, 21b include guide channels for respective hoist platforms 22a, 22b.
  • the uprights 21a, 21b are in the embodiment shown constrained to move laterally with the respective ladders 12a, 12b with which they are associated. This is achieved by means of respective, rigid interconnections between the respective ladders 12a, 12b and the associated uprights 21a, 21b.
  • one or more of the rigid interconnections between the ladders 12a, 12b and the respective uprights 21a, 21b may be dispensed with. This would allow one or both the uprights 21a, 21b and hence the hoist platforms 22a, 22b, to be laterally moveable on the framework 11 independently of the associated ladder 12a, 12b. Thus, one or more of the ladders would be useable in a more conventional manner if desired, without the need to manoeuvre a hoist with the ladder.
  • Each member 21a, 21b in the embodiment shown includes a channel into which a projecting portion of the respective hoist platform 22a, 22b is engaged, for guidance purposes.
  • the respective uprights 15a, 15b of each ladder 12a, 12b adjacent the corresponding upright 21a, 21b include a channel 16 extending along the length thereof.
  • each respective platform 22a, 22b is constrained to move adjacent the associated channel 16, by virtue of a projection on the respective platforms 22a, 22b engaging into the channel 16.
  • Drive means such as chains or belts for the hoist platforms 22a, 22b are disposed within the respective channels 16 in operative engagement with the projections on the respective platforms 22a, 22b. It will thus be appreciated that actuation of one of the drive means either upwardly or downwardly causes upward or downward movement of the hoist platform 22a, 22b connected thereto.
  • a motor means (not shown) may be provided, whereby the drive means may be actuated automatically.
  • a suitable control switch may also be provided for the motor means.
  • the two hoist platforms 22a, 22b may between them be moved to any position within the rectangular envelope defined by the framework 11. This is achieved by sliding one or other of the ladder plus hoist assemblies as appropriate along the framework as described hereinabove, and selective raising or lowering of the desired platform 22a, 22b until it rests at a suitable height.
  • the apparatus is secured by means of suitable fixings (such as bolts, rivets, etc.) to a shelving rack 25.
  • suitable fixings such as bolts, rivets, etc.
  • This method of fixing is suitable when the apparatus is to be used in conjunction with a firmly secured structure, such as wall-secured shelving.
  • the shelving provides a firm mounting for the apparatus.
  • the framework 11 may be equipped with jacking feet (not shown) whereby the framework 11 and hence the apparatus as a whole is a freestanding item.
  • suitable fixing means may be secured to the framework 11 whereby the apparatus may be secured to, e.g., a ceiling or overhead beam; or an adjacent wall.
  • Such means may be in the form of, e.g., angle brackets extending upwardly of the upper member 11b.
  • the apparatus shown may optionally include a pair of harnesses secured respectively to ladders 12a, 12b.
  • the harnesses would be slidable up and down the respective ladders, and would be suitable for wearing by a user of the apparatus.
  • the purpose of the harnesses would be to prevent users from falling off the apparatus.
  • harnesses would include electrical and/or mechanical interlock means, whereby the hoist platforms 22a, 22b would be rendered immobile unless the harnesses are secured about the users of the apparatus.
  • a single harness may be provided, the harness being detachable from one of the ladders 12a, 12b and reattachable to the other ladder 12a, 12b as desired.
  • a further variant of the invention comprises a pair of ladders such as 12a, 12b having upright members 15a, 15b as shown in Figure 1.
  • the pair of platforms 22a, 22b and the corresponding guide uprights 21a, 21b would be dispensed with.
  • a single hoist platform may be provided interconnecting the uprights 15a, 15b in a vertically slidable manner. This arrangement is particularly suitable when the apparatus is intended for carrying elongate objects such as vehicle exhaust pipes.
  • the two ladders 12a, 12b would be simultaneously laterally moveable.
  • the embodiment shown in Figures 1 to 3 includes guarding 26 extending around three of the four sides of each rectangular platform 22a, 22b.
  • the guarding 26 is open along one edge 23 of each platform for ease of loading of the respective platforms.
  • the ladder and hoist assemblies are moveable laterally by means of manual propulsion.
  • the lateral motion of the assemblies could be motorised if desired.
  • Suitable control means such as switch gear and a power supply could be incorporated.
  • a disparate number of ladders and hoists may be provided if desired.
  • an operator would initially position one of the hoist platforms at an appropriate position for loading or unloading, by sliding one or other of the ladder and hoist assemblies laterally and actuating the drive means for the hoist in question until the platform is at a desired lateral and vertical position.
  • the position of the platform could if necessary be locked by means of an interlock effective on the drive means.
  • the operator would then climb the ladder adjacent the positioned hoist, having first secured himself into the harness if this is a requirement in the installation concerned. Once the operator reaches the height of the platform it is an easy matter for him to load goods from, e.g., a shelf disposed adjacent the platform onto the platform itself.
  • the operator would then return to floor level or the level of another shelf and operate the hoist to bring the platform to a desired level for unloading.
  • the hoist and ladder assembly could be moved laterally to position the platform as desired.
  • the apparatus provides a low-cost solution to a common problem in warehouse storage installations.
  • the apparatus is cheaper to fabricate and maintain than, for example, a stacker truck, and moreover may readily be used e.g. in relation to mezzanine level shelving and in conjunction with shelving units spaced apart only by narrow aisles. Such places are generally inaccessible to stacker trucks.
  • adjustable length ladders 12a, 12b and upright members 21a, 21b may be employed.
  • a range of sizes of ladders and upright members may be available, and the framework 11 adjusted to a height to suit the ladders and uprights chosen.
  • the ladders of the preferred embodiment may be replaced by alternative means such as a flight of steps.
  • the ladders may be replaced by e.g. further hoists adapted to raise and lower users of the apparatus in safety.
  • a hoist may be a kind of escalator comprising one or more horizontal rungs constrained and driveable to move vertically in a pair of guide channels formed in a corresponding pair of upright members laterally moveably secured on the framework.
  • a suitable safety harness may be provided in conjunction with the rung(s) to ensure that a user stepping onto the rung(s) does not run the risk of falling off the apparatus during movement of the rung(s).
  • a hoist may, for example, be configured similarly to the hoist shown in Figure 3 of the drawings, i.e. a hoist platform vertically moveable on an upwardly extending guide channel itself moveable from side to side on the framework.
  • a suitable method for the construction of the apparatus is by fabrication (e.g. by welding, riveting and screwing) from e.g., mild steel.
  • fabrication e.g. by welding, riveting and screwing
  • various other materials could be used.
  • lightweight alloy metals could be used in certain installations.
  • the apparatus could then be manufactured from or coated with a material which is unlikely to cause sparking.
  • the drive to the hoist platforms is preferably either manual or hydraulic. The use of such drives is not precluded in non-flammable applications.
  • FIG. 4 there is shown an apparatus indicated generally by the reference numeral 10 including three upwardly extending frame members 11a, 11b, 11c.
  • the frame members 11a, 11b, 11c extend generally vertically in use of the apparatus, and are generally parallel one to another.
  • the frame members 11a, 11b, 11c are equi-spaced and interconnected at their upper and lower ends by horizontal frame members 12a and 12b.
  • the frame members 11 and 12 between them define a generally upwardly extending rectangular framework, which is divided into two parallel, generally upwardly extending rectangular planes or regions 13a, 13b which are adjacent one another.
  • bracing members 14a, 14b Extending rearwardly of the apparatus when aligned as shown in Figure 4 are respective bracing members 14a, 14b.
  • the bracing members 14a, 14b are rigidly secured respectively at the lowermost ends of the outermost, upwardly extending frame members 11a, 11c.
  • Respective struts 16a, 16b extend between the approximate mid points of the upwardly extending members 11a, 11c and positions generally adjacent the free ends of the corresponding bracing members 14a, 14b to ensure that the fixing of the bracing members 14a, 14b relative to the upwardly extending frame members 11a, 11c is rigid.
  • the fixing can be achieved by means of bolts, snap lock connections and/or welds.
  • cross-bracing members 17 rigidly interconnect the opposite corners of the rectangular base portion of the apparatus defined by the bracing members 14a, 14b and the lower horizontal member 12b.
  • the framework of the apparatus is simple yet rigid.
  • the edges of the frame members 11b, 11c which face into the rectangular plane 13b are provided with channels.
  • the channels are not visible in the figures, but may be of a design similar to those shown in Figure 3.
  • the channels are adapted slidingly to receive complementary projections formed on the corners of an operator support platform 18 adjacent the channels.
  • the operator support platform 18 is a horizontal planar member, and it is retained loosely captive in the channels in the members 11b, 11c. Therefore, the operator support platform 18 is constrained to move in a generally vertical direction.
  • Means may be provided whereby the support platform i8 may be raised and lowered.
  • chain drives may incorporated in one or more of the channels in driving engagement with the platform 18.
  • the chains of the chain drives could be operated manually (for example if a gear wheel having a handle is provided), or by means of a suitable motor.
  • a gravity counterbalance mechanism could be employed, wherein the platform 18 is supported on cables running. e.g., within the channels and a counterbalance weight may be provided elsewhere on the apparatus in the manner of an elevator.
  • the platform 18 is braced on its lower edges by respective fillets 19 which define downwardly extending edges of the rearmost corners of the platform.
  • Other forms of stiffening and strengthening mechanisms may be employed instead.
  • the platform 18 is shown protruding forwardly of the apparatus. However, the arrangement is such that even in such an embodiment the centre of mass of an operator 20 acts within the "footprint" of the apparatus defined by the members 14a, 14b and 12b. Thus, the apparatus is inherently stable in use. Further stability can be provided in embodiments in which the operator platform 18 extends rearwardly, within the "footprint" referred to.
  • a load platform 22 of similar construction to the operator platform 18 is moveable vertically and horizontally in the rectangular plane 13a adjacent the plane 13b.
  • the means whereby the platform 22 may be supported and driven vertically are similar to those described in relation to the operator platform 18.
  • the load platform 22 differs from the operator platform 18 in that a guard rail 23 is provided extending about a plane disposed a short distance above the upper surface of the platform 22.
  • the guard rail 23 prevents objects placed on the platform 22 from falling off.
  • the platform 22 may be provided with e.g. one or more lips or side walls (which may optionally take the form of a closeable box), to achieve the same purpose.
  • Horizontal movement of the load platform 22 broadly within plane 13a may be achieved eg. by virtue of the platform being loosely captive In the fillets 22a that engage the upwardly extending members 11a and 11b.
  • the fillets may each include upstanding projections that engage a slot of complementary profile and formed in the base of platform 22.
  • some embodiments of the invention may include, e.g., push button controls connected to the motor controlled circuitry by means of appropriate cables.
  • the push button unit may be secured either temporarily or permanently on one of the frame members of the apparatus at an appropriate height, by means of e.g., suitable hanging hooks; or the push button unit may be intended to be hand held by the operator 20 during use of the apparatus.
  • the two platforms 18, 22 may be linked together such that their movement is synchronised, or simultaneous. Indeed, the two load platforms 18, 22 may be rigidly linked together so that only a single drive means is required to drive both platforms. In such a case, it is likely that the load platform 22 would be secured at a height above that of the platform 18 to facilitate access by the operator 20 to the objects carried on the platform 22. In such an embodiment, lateral movement of the operator platform may be necessary. This may be achieved e.g. by the means disclosed above in relation to platform 22.
  • the embodiment of Figure 4 is supported on floor or ground engaging wheels or castors 24.
  • the castors 24 may desirably be fitted with brakes to lock the apparatus in position during use.
  • locking means such as locking pins insertable into the frame members or brakes operable on the drive means for the platforms, are desirably provided to secure the platforms 18 and 22 in position during use of the apparatus.
  • FIG. 5 there is shown a further embodiment of the apparatus which additionally includes various features to enable the specific use of the apparatus for the hanging of wallpaper and carrying out decorating operations.
  • the embodiment of Figure 5 is broadly similar to that of Figure 4, and therefore components of the embodiment of Figure 5 corresponding the components of the Figure 4 embodiment will be defined herein using identical reference numerals.
  • the embodiment of Figure 5 includes four generally upwardly extending frame members 11a, 11b, 11c and 11d.
  • the frame members 11 are generally parallel one to another and equi-spaced, thereby to define three rectangular planes 13a, 13b and 13c.
  • Platform 18 of the Figure 5 embodiment additionally includes a guard rail 25 which in the embodiment shown is open towards the left hand edge of the platform 18.
  • the guard rail 25 extends about a zone which would correspond to the waist height of a typical operator of the apparatus, thereby improving the safety of the apparatus for operators.
  • the open side of the guarding 25 is intended to allow ready access to the platform 18 by operators. For this reason, the platform 18 is moveable in the central plane 13c, so that there is space adjacent the plane 13a for an operator safely to step onto and off the platform 18.
  • the load support platform 22 is rigidly secured to the operator platform 18, e.g., by welding at the top of the guard rail 25 and by means of additional struts 27 which extend downwardly from the underside of the load support platform 22 towards the downwardly extending members 25a disposed on the right hand side of the guard rail 25.
  • the load support platform 22 and the struts can if desired be constructed so that the load platform 22 hinges or folds to adopt a parking position, e.g. vertically aligned adjacent the members 25a, when not in use. Suitable hinges, joints and fastening means may be provided for this purpose.
  • an optional feature is the positioning of the push button controls of a motor adapted to drive the platforms 18 and 22 at the location indicated by the reference numeral 28.
  • a pair 29a, 29b of support members extends forwardly of the apparatus from the region above the platform 18, in the region 13c.
  • the members 29a, 29b are constrained in the channels of the frame members 11b, 11d to move vertically on the apparatus in a manner similar to the platform 18.
  • Gripped rotatably between the members 29a, 29b may be a roll of wallpaper 30.
  • the wallpaper roll 30 may optionally be supported on a roller rotatably secured between the support members 29a, 29b; alternatively, the support members 29a, 29b may simply include further members e.g. spigots at the free ends thereof at right angles to the support members 29a, 29b which further members protrude into the open ends of the wallpaper roll 30, thereby rotatably to support it.
  • Another possibility is to provide a single support member such as member 29a having secured to its free end a horizontal bar on which e.g. a wallpaper roll may be hung.
  • the arrangement may be such that movement of the support members 29a, 29b is independent of the movement of the platform 18; alternatively, the movement of the support members 29a and 29b may be arranged by means of suitable support means to be synchronous with the platforms 18 and 22 in the embodiments shown.
  • suitable support means to be synchronous with the platforms 18 and 22 in the embodiments shown.
  • a pair 31a, 31b of arms Extending forwardly of the apparatus at the uppermost edge thereof is a pair 31a, 31b of arms which are interconnected at their free ends by a padded, horizontal presser or gripper member 33.
  • Figure 5 includes a number of additional features which particularly suit it for use in decorating operations.
  • the embodiment includes hooks 34 attached to the support platform 22, whereby, e.g, paint brushes and paint rollers may be hung up in such a position as to avoid damaging a newly decorated wall adjacent the apparatus.
  • the members 14a, 14b, 16a and 16b are secured to the upwardly extending frame members 11a and 11c by means of suitable hinges 35 secured at the attachment points.
  • the pair of wings defined respectively by the members 14a and 16a and 14b and 16b may be folded inwardly to reduce the overall size of the apparatus during carrying thereof.
  • Figure 5 shows a power cable 36 whereby power may be delivered to the apparatus to power the platforms when the apparatus is designed to be powered by an electric motor.
  • the power cable 36 may optionally be connected to mains power (via a transformer if necessary) or to a battery pack.
  • the apparatus is typically manufactured from extruded aluminium sections, which may be secured together, e.g. by welding. Various other materials may also be employed.
  • the apparatus may be manufactured from any of a number of steels or other metals, from plastics materials or even from timber.
  • any of the materials employed may be coated with, e.g., a plastics or rubberised finish for safety and durability.
  • the platforms 18, 22 may be coated with non-slip materials for added safety.
  • the embodiment of Figure 5 employs adjustable feet 37 to support the bracing members 14a, 14b and, if desired, the lowermost extremities of the upright members 11.
  • the feet 37 are adjustable, to level the apparatus and to adjust its overall height.
  • the apparatus may include e.g. anchor means such as adjustable knives which are adapted to engage the ground when the apparatus is used outdoors.
  • the arms 31a, 31b protrude forwardly of the apparatus further than the support members 29a, 29b.
  • the positioning of the roll 30 closer to the apparatus than the free end thereof causes the wallpaper to adopt a parabolic curve which may easily be smoothed onto a wall to provide a good decorating result.
  • FIG. 6 there is shown a further design, which is a variant on the embodiment of Figure 4.
  • Figure 6 there are provided four bracing members 14 extending perpendicular to the lower ends of the frame members 11.
  • a pair of bracing members extend respectively from each member 11.
  • Struts 16 extend between the bracing members 14 and the members 11.
  • the members of the pairs of bracing members extend on opposite sides of the apparatus, to create a stable base for the apparatus regardless of the direction in which forces may be applied to the frame members.
  • the embodiment of Figure 6 may be used e.g. in the middle of a room, for instance to allow the changing of light bulbs or ceiling tiles.
  • the embodiment of Figure 6 may be regarded as a version of the Figure 4 embodiment to which an additional set of bracing members 14 and struts 16 has been secured, to enlarge the base area of the apparatus and spread the feet and/or wheels of the apparatus for greater stability.
  • the additional members 14 and the struts 16 may be attached by e.g. welding, to create a permanently enlarged base.
  • the additional members may be attached by releasable means such as bolts or spring clips.
  • the members 14 and struts 16 may be lockably moveable on the apparatus.
  • the attachment of the proximal ends of the members 14 and struts 16 may be achieved by engagement of the projections on the members in complementary slots or tracks in the upwardly extending members 11. This would allow movement of the members forming the base of the apparatus in the directions shown by the arrows A, A'.
  • the members forming the base can be moveable over a substantial portion of the length of the members 11 if desired.
  • the apparatus may be safely used in places where the floor height changes abruptly, such as on stairs or in swimming pools.
  • connection between the bracing members 14 and the members 11 may be pivotable to allow rotation of the members 14 in the directions shown by the arrows B. If this arrangement is adopted, further, pivotable connections must be provided at the ends of the struts 16. The changes in the lengths of the struts 16 can be accommodated by ensuring that the struts 16 are telescopically collapsible, or by allowing the upper end of each strut to slide relative to the relevant member 11 as indicated by the arrows A'. Thus, the apparatus may safely be used on, e.g. sloping or uneven ground.
  • Suitable joint and/or locking means for the various members may be provided in conjunction one with another.
  • the Figure 6 embodiment also shows a further optional feature, in the form of safety guarding 40 disposed on the forward edge of the operator support platform.
  • the guarding may extend to a predetermined height above the platform, e.g. to waist height as shown, or to the full height of an operator.
  • the purposes of the guarding are to prevent an operator from falling from the apparatus, and also to minimise the risk of an operator trapping e.g. a hand or a foot when travelling on the platform.
  • the guarding 40 may be moveable relative to the platform, to allow the operator access to a workpiece.
  • the guarding can be arranged to be slidable upwardly, downwardly or sideways relative to the platform for this purpose.
  • the guarding 40 can be manufactured as a flexible item so that it may be retracted by rolling it onto a roller (not shown).
  • a suitable interlock means can optionally be provided to prevent the guarding from moving relative to the operator platform 18 while the platform 18 is moving. Further guarding similar to guarding 40 may additionally or alternatively be provided adjacent the rear edge of platform 18 if desired.
  • FIG. 7 there is shown a version of the Figure 5 embodiment, to which the additional bracing members and struts shown in Figure 6 have been secured.
  • An additional, optional feature of the Figure 7 embodiment is a trough 41 which is releasably securable by means of, e.g, hooks or spring clips on the apparatus.
  • the trough 41 may conveniently be sited a short distance below the roll 30 of wallpaper, and may contain water or wallpaper adhesive to facilitate the hanging of wallpaper.
  • the embodiments show the rectangular planes 13a, 13b and (where present) 13c as being co-planar one with another, it will be appreciated that this need not be so and the planes 13 may be angled one relative to another. Alternatively, the planes 13 may be parallel but not co-planar.
  • Figure 8 is similar to that of Figures 4 to 7 except that a greater degree of lateral movement of the operator and load supporting components is possible, by means of an arrangement like that shown eg. in Figure 1.
  • the operator support is in the form of a ladder, but may equally well be a hoist-like platform or a ladder vertically moveable on the framework. Such means are also, horizontally moveable thereon.
  • the apparatus of any of the embodiments disclosed herein may be constructed as a permanently erected item; as a potentially dismantleable or foldable item or as a kit of parts and/or members which may be assembled to form the apparatus. Suitable joints and/or fixings may be incorporated to facilitate dismantling and reassembly.
  • the apparatus of the invention can be manufactured as an extremely versatile item, which is suitable for use, e.g., by professional builders, carpenters, electricians, engineers, decorators, DIY enthusiasts and numerous other operators who would otherwise be required to carry objects by hand up a ladder to gain access to their work.
  • examples of the apparatus may be secured one above another to permit access to tall structures.
  • adapter members whereby the laterally and vertically extending members (on which the various components are moveable) may be appropriately interconnected, thereby to allow e.g. access of a load or operator platform to all points of a structure constituted by or including the apparatus.
  • Structures in which examples of the apparatus are secured one above another may be adapted to receive the load or operator platforms in a removeable manner, so that such platforms may selectively be fed into the structure at the bottom for subsequent movement elsewhere on the apparatus.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Optical Communication System (AREA)
  • Color Television Systems (AREA)
  • Seeds, Soups, And Other Foods (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (21)

  1. Un dispositif servant à grimper, comprenant :
    un châssis (11) s'étendant vers le haut;
    un élévateur mobile (18) pour un opérateur, ou bien une échelle (12) s'étendant vers le haut, fixé dans le châssis; et
    un élévateur à objets (22) comprenant des moyens de support de charge, l'élévateur à opérateur (18) ou l'échelle (12) étant déplaçable sélectivement horizontalement sur le châssis (11), et l'élévateur à objets (22) étant tel que les moyens de support de charge sont sélectivement déplaçables verticalement et horizontalement sur le châssis (11), caractérisé par le fait de comprendre des moyens de manière que le châssis soit supporté de façon prédominante par le dessous de son point le plus élevé.
  2. Un dispositif selon la revendication 1, comprenant des moyens pour fixer le châssis à une structure supplémentaire.
  3. Un dispositif selon la revendication 1 ou 2, comprenant des moyens de fixation du châssis à un plafond.
  4. Un dispositif selon l'une quelconque des revendications 1 à 3, comprenant des moyens (11a) conçus de manière à pouvoir ajuster la hauteur du châssis.
  5. Un dispositif selon l'une quelconque des revendications précédentes, comprenant des moyens conçus de manière à permettre d'ajuster la longueur du châssis.
  6. Un dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élévateur (22) et l'échelle (12) ou l'élévateur à opérateur (18) sont interconnectés rigidement.
  7. Un dispositif selon l'une quelconque des revendications précédentes, dans lequel le châssis comprend un rail ou piste de guidage (11a) et l'échelle comprend des moyens (13; 14) coopérant avec le rail ou piste de guidage, pour permettre un déplacement latéral de l'échelle sur le châssis.
  8. Un dispositif selon l'une quelconque des revendications 1 à 6, dans lequel le châssis comprend un rail ou piste de guidage (11a) et l'élévateur à opérateur comprend des moyens qui coopèrent avec le rail ou piste de guidage, afin de permettre un déplacement latéral de l'élévateur à opérateur sur le châssis.
  9. Un dispositif selon l'une quelconque des revendications précédentes, dans lequel le châssis comprend un rail ou piste de guidage (11a) et l'élévateur à objets comprend des moyens (13) qui coopèrent avec le rail ou piste de guidage, pour permettre un déplacement latéral de l'élévateur à objets sur le châssis.
  10. Un dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élévateur à opérateur comprend un organe s'étendant vers le haut; une plate-forme pour opérateur (18) qui est captive de façon lâche par rapport à l'organe; et des moyens conçus de manière à permettre à la plate-forme d'être entraínée sur l'organe.
  11. Un dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élévateur à objets comprend un organe s'étendant vers le haut (12a) ayant un canal (15a) formé en son sein; une plate-forme de chargement (23) contrainte de se déplacer sur l'organe, une partie étant engagée dans le canal; et des moyens d'entraínement, de manière que la plate-forme puisse être entraínée sur l'organe.
  12. Un dispositif selon la revendication 11, modifié de manière que l'organe s'étendant vers le haut comprenne une saillie au lieu, ou en plus du canal, et la plate-forme de chargement comprenne des moyens adaptés pour recevoir la saillie.
  13. Un dispositif selon l'une quelconque des revendications précédentes, comprenant une paire d'échelles (12, 12b) ou d'élévateurs à opérateur, fixés sur le châssis.
  14. Un dispositif selon la revendication 13, dans lequel les échelles ou les élévateurs à opérateur sont interconnectés à l'aide d'un élévateur à objets commun.
  15. Un dispositif selon la revendication 13, comprenant un élévateur à objets (22a, 22b) séparé, fixé à chaque échelle ou à chaque élévateur à opérateur.
  16. Un dispositif selon l'une quelconque des revendications précédentes, dans lequel la ou une échelle, ou le ou un élévateur à opérateur fixé au châssis est déplaçable indépendamment de tout élévateur à objets fixé au châssis.
  17. Un dispositif selon l'une quelconque des revendications précédentes, comprenant un harnais (20) fixé à la ou à une échelle, ou à l'élévateur ou à un élévateur à opérateur, de manière qu'un utilisateur du dispositif puisse être empêché de tomber de ce dispositif.
  18. Un dispositif selon la revendication 17, comprenant des moyens de manière que l'élévateur à objets soit non opérationnel, sauf si le harnais est fixé autour d'un utilisateur du dispositif.
  19. Dispositif selon l'une quelconque des revendications précédentes, dans lequel les moyens de support de charge de l'élévateur à objets sont positionnés d'un côté de l'élévateur à objets ou de l'échelle, de manière que les moyens de support de charge n'obstruent pas l'espace à l'avant de l'élévateur à opérateur ou de l'échelle.
  20. Un système d'accès à un rayonnage, comprenant un dispositif pour grimper selon l'une quelconque des revendications précédentes.
  21. Un système comprenant une unité à rayonnage, et un dispositif pour grimper conçu pour accéder à l'unité à rayonnage, le dispositif pour grimper comprenant les éléments définis à l'une quelconque des revendications 1 à 19.
EP94905791A 1993-02-05 1994-02-04 Dispositif servant a grimper Expired - Lifetime EP0682734B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97202968A EP0823516A3 (fr) 1993-02-05 1994-02-04 Dispositif élévateur

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9302283 1993-02-05
GB9302283A GB2274826B (en) 1993-02-05 1993-02-05 An apparatus for escalading
GB9312822 1993-06-22
GB939312822A GB9312822D0 (en) 1993-02-05 1993-06-22 Improvements in and relating to apparatus for escalading
PCT/GB1994/000214 WO1994018417A1 (fr) 1993-02-05 1994-02-04 Dispositif servant a grimper

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP97202968A Division EP0823516A3 (fr) 1993-02-05 1994-02-04 Dispositif élévateur

Publications (2)

Publication Number Publication Date
EP0682734A1 EP0682734A1 (fr) 1995-11-22
EP0682734B1 true EP0682734B1 (fr) 1998-05-27

Family

ID=26302397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94905791A Expired - Lifetime EP0682734B1 (fr) 1993-02-05 1994-02-04 Dispositif servant a grimper

Country Status (9)

Country Link
EP (1) EP0682734B1 (fr)
AT (1) ATE166688T1 (fr)
AU (1) AU691170B2 (fr)
CA (1) CA2155674A1 (fr)
DE (1) DE69410596T2 (fr)
DK (1) DK0682734T3 (fr)
ES (1) ES2120606T3 (fr)
SK (1) SK98095A3 (fr)
WO (1) WO1994018417A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA04004217A (es) * 2004-05-03 2005-11-08 Rojas Arriaga Marisela Escalera ajustable con peldanos o barras movibles.
MXPA04004218A (es) * 2004-05-03 2005-11-08 Rojas Arriaga Marisela Escalera con control de peldanos o barras movibles.
MXPA04004216A (es) * 2004-05-03 2005-11-08 Rojas Arriaga Marisela Nueva escalera con peldanos deslizables para evacuacion de edificios en caso de emergencia.
CN111894438B (zh) * 2020-07-09 2022-04-08 金环 一种便于使用的高安全性园林梯

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1444759A (en) * 1922-04-13 1923-02-06 Benjamin K Traylor Ladder
US2616769A (en) * 1947-12-29 1952-11-04 Nelson H Rector Elevating ladder scaffold
US3236331A (en) * 1963-05-29 1966-02-22 John Cornelia Jr Work bench, scaffold and lift combination
DE1292581B (de) * 1963-05-30 1969-04-10 Demag Zug Gmbh Stapelhubgeraet
DE1224667B (de) * 1964-04-30 1966-09-08 Siebau Siegener Stahlbauten G Regalbedienungsgeraet mit Senkvorrichtung
DE1295482B (de) * 1966-08-16 1969-05-14 Demag Societa Italiano Per Azi Regalbedienungsgeraet mit einem am Hubschlitten befestigten Fahrerstand
US3548970A (en) * 1968-08-05 1970-12-22 Ralph W Hutchens Sr Scaffolding and material handling system
CA959447A (en) * 1972-02-17 1974-12-17 Serge Chabot Hoist apparatus for fixtures
US4125173A (en) * 1975-12-11 1978-11-14 Rust Willard J Scaffold device
EP0061358B1 (fr) * 1981-03-25 1985-07-17 Julius Wilhelm Thalmann Accessoire pour échelles
US4378860A (en) * 1981-04-24 1983-04-05 Newberry Claude C Movable staging scaffold system for building construction
DD230514A3 (de) * 1983-08-16 1985-12-04 Dresden Baumechanisierung Zusatzeinrichtung fuer hoehenverstellbare arbeitsgerueste
US4877107A (en) * 1988-07-05 1989-10-31 Carl Anderson Mobile scaffolding system and scaffold support
DE3838283A1 (de) * 1988-11-11 1990-05-17 Peter Kralj Fassadenlift
US5067587A (en) * 1990-12-28 1991-11-26 William F. Mims, Jr. Service platform for mobile scaffolding unit

Also Published As

Publication number Publication date
EP0682734A1 (fr) 1995-11-22
WO1994018417A1 (fr) 1994-08-18
DK0682734T3 (da) 1999-03-22
CA2155674A1 (fr) 1994-08-18
DE69410596D1 (de) 1998-07-02
AU691170B2 (en) 1998-05-14
ES2120606T3 (es) 1998-11-01
ATE166688T1 (de) 1998-06-15
AU5975894A (en) 1994-08-29
SK98095A3 (en) 1995-12-06
DE69410596T2 (de) 1998-11-26

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