Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B66—HOISTING; LIFTING; HAULING
  • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
  • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
  • B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
  • B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
  • B66B9/0869—Collapsible stairways, e.g. operable between a lower level and an upper level

Definitions

• the field of the invention is that of crossing level breaks, for example outside or inside buildings.
• the invention relates in particular, but not exclusively, to the field of equipment intended for people with reduced mobility in order to allow them to cross a level break corresponding to one or more steps.
• an objective of the present invention is to provide a lifting device, intended in particular for people with reduced mobility, in order to allow them to cross a level break corresponding to a staircase of a few steps, such as a stoop.
• Another object of the invention is to provide such a device, which allows crossing of a level break on the one hand by valid people, in a "transparent” manner for them, and on the other hand by people with reduced mobility, or by any type of transport cart.
• Another objective of the invention is to propose such a device whose overall size is limited.
• Yet another objective of the invention is to disclose such a device that can be installed at low cost and requiring little masonry work to do this.
• the invention relates to a lifting step device characterized in that it comprises: a set of at least three vertically movable elements each having at least two planes essentially perpendicular to each other forming steps and risers; at least first vertical drive means of the first movable end element of said set of movable elements and at least second vertical drive means of the last movable end element of said set of movable elements; connecting means cooperating with the first mobile element, the last mobile element and at least one intermediate mobile element provided between said first mobile element and said last mobile element, said connecting means allowing the vertical displacement of said intermediate element or elements during displacement vertical of said first mobile element and / or of said last mobile element; control means of said drive means, making it possible to position said mobile elements in at least two stable positions: a first position in which said movable elements form a staircase, and a second position in which said movable elements are aligned in one and the same essentially horizontal plane, so as to thus form a platform, said control means allowing vertical translation of said platform thus formed between a low
• Such a device can be installed in particular to replace the steps to access a dwelling and allow a person with reduced mobility arriving at the bottom or at the top of this step to climb and descend it. It also allows passage to a valid person, in the form of a classic staircase.
• the invention allows access to people with reduced mobility in a space substantially equivalent to that of a staircase, while alternately offering the functions of a staircase.
• the invention relates to a staircase convertible into a platform for the transfer of a wheelchair.
• the lifting step device can take at least three positions:
• the device comprises one or two intermediate elements.
• the device comprises a frame installed on at least one side of said set of movable elements, said frame being equipped with a first vertical rack and a second vertical rack and said first movable member is for u of a first pinion and said last mobile element is equipped with a second pinion, said first drive means allowing the drive of said first pinion and said first mobile element along said first vertical rack and said second drive means allowing the drive of said second pinion and said last movable member along said second vertical rack.
• the frame is advantageously provided on one side of the movable elements so as not to burden the construction of the device and, mainly, to reduce its size.
• said frame has vertical slides and said movable elements are each provided with a lateral carriage having rollers and counter-rollers allowing the movement of said carriages along said slides.
• said carriages each have a set of four rollers cooperating with four counter-rollers, two of said rollers being fixed essentially in the upper part of each of said carriages and two of said rollers being fixed essentially in the lower part of each of said carriages , the rollers fixed in the upper part of said carriages cooperating with the external face of said slideways and the rollers fixed in the lower part of said carriages cooperating with the internal face of said slideways.
• said rollers are made of steel and said counter-rollers are made of plastic material or steel.
• Such rollers make it possible to prevent any inclination of the mobile elements forming the steps in a direction perpendicular to the axis of rise of the steps. This is particularly useful when the frame supports the movable elements only on one side.
• said means for connecting the movable elements to each other are made up of a bieile connecting said carriages, said connecting rod being mounted in rotation on an axis integral with the carriage of said intermediate movable element and being provided with oblong holes cooperating with wheels mounted in rotation on other moving parts.
• said first movable element comprises an anti-fall lip substantially pressed against the riser of said first movable element in said first position, and cooperating with a third motor making it possible to raise it in said second position.
• an anti-fall lip makes it possible to prevent any accident against the person being on the platform during the ascent of the latter.
• such an anti-fall lip is necessary for compliance with the safety standards set for the transfer of people with reduced mobility.
• said device comprises a horizontal restraint and locking arm integral with said last mobile element and extending up to said first mobile element, and in said first mobile element is provided with means for locking said arm of stress, so as to secure said movable elements in said second position.
• This constraint arm makes it possible on the one hand to join together between the mobile elements for safety reasons, and on the other hand to guarantee perfect synchronism of the two drive means, even when the latter do not support the same load.
• said first and second pinions are mounted in the lower part of the carriages of the first and last movable elements, said carriages being provided in their upper part with a idler gear, each of said idler idlers cooperating with one of said racks.
• the idler gears are intended to prevent the tilting of the moving parts.
• said carriages are preferably provided with a second set of rollers cooperating with the lateral faces of the slides so as to prevent the inclination of said steps in the direction of ascent thereof.
• several devices of this type can be superimposed, in decaiase, for example to allow the crossing of a floor.
• FIG. 4 is a perspective view of the device according to the invention.
• - Figure 5 is a side view of the device shown in Figure 4;
• - Figure 6 is a side view of the device according to Figure 4 when the platform is lowered to ground level;
• FIG. 7 is a side view of the device according to Figure 4 when the platform is raised to the level of the floor;
• FIG. 8 Figures 8 and 9 illustrate the operation of the safety device preventing the platform from disengaging and ensuring the synchronization of the drive means.
• the device according to the invention can be installed to replace a stoop allowing access to a floor 41 from the ground 40.
• Such a device comprises three mobile elements, also called in the part of the invention lifting steps: a first element 1 constituting the first step from the ground, an intermediate mobile element 2 constituting the second step, and a last mobile element 3 constituting the third step, the fourth step being constituted by the elevation between stage 41 and the last step formed by the mobile element 3.
• the three mobile elements are shown in their "staircase” position and the device has the general external appearance of a conventional porch. This is usually the default position.
• the device may include more than one such intermediate element.
• the three movable elements 1, 2, 3 are lowered to ground level so as to form a platform 8 on which a person with reduced mobility, possibly in a wheelchair, can easily get on.
• FIG. 3 represents the platform 8 in its high position at the same level as the stage 41.
• an anti-fall lip 29 consisting of a plate parallel to the riser of the first movable element 1 is placed in order to avoid any fall of the person being on the platform 8.
• the user When using the step-up device, the user has a two-channel remote control. Note that it may, in other embodiments of the invention have other types of control.
• the remote control includes an "up" command and a "down" command.
• the signals emitted by the remote control feed a programmable automaton which manages the progress of the "up-down” cycles.
• the latter monitors the status of 9 detectors (3 per motor, including the anti-fall lip motor) and controls 8 actuators (motors, latch and horn).
• each movable element 1, 2, 3 consists of three plates arranged at right angles to each other.
• two of these plates (la and lb, 2a and 2b, 3a and 3b) respectively form the steps and the counter-steps of the device.
• These mobile elements are secured to a lateral frame 9 on only one of their side 10.
• the first mobile element 1 and the third mobile element 3 are each provided with a motor (geared motor) 4, 5 allowing their vertical displacement along the frame 9.
• the mobile elements 1, 2, 3 are fixed to carriages 19, 20, 21 sliding on slides 15, 16, 17, 18 forming parts of the frame 9.
• the carriages 19, 20, 21 roll on the slides 15, 16, 17, 18 by means of sets of rollers and counter rollers 22a.
• the rollers 22 roll on the external face of the slides and the counter-rollers 22a roll on the internal face of the latter.
• Motors 4 and 5 can be replaced by any suitable drive means, such as side cylinders.
• the plane lb of the first mobile element 1 is designed so as to be able to form an anti-fall lip thanks to a motor provided under the mobile element 1 and making it possible to raise the plane lb thanks to a cam and to a lever 34.
• Control and synchronization means 7 are provided so as to allow the vertical movement of the mobile elements 1, 2, 3, in a single horizontal plane so as to form a platform.
• the carriages 19, 20, 21 each have a set of four rollers 22-22 and four counter-bits 22a.
• the two rollers 22 located in the upper part of each carriage roll on the external face of the slides 15, 16, 17, 18 of the frame 9; while the corresponding counter-rollers (not shown) roll on the internal face of these slides.
• the rollers located in the lower part of the carriages 19, 20, 2 roll on the internal face of the slides 15, 16, 17, 18 while the corresponding counter-rollers .22 roll on the external face of the latter.
• the rollers 22 which support the main forces to prevent tilting of said movable elements 1, 2, 3 in a direction perpendicular to the axis of "climb" of the steps are formed from steel while the counter rollers are formed from a plastic material.
• the motors 4 and 5 respectively equipping the first mobile element 1 and third mobile element 3 allow the carriages 19 and 21 to be mounted along the lateral rack 12 and 1 1 fixed to the frame by means of pinions 14a, 13a. Idler gears 1 and 13 are rotated when the carriages 19 and 21 are raised and lowered.
• This connecting rod 6 is provided at each of its ends with oblong holes 26 in which roll wheels 27 fixed to the movable element 1 and 3.
• the motors 4 and 5 have been actuated so that the mobile elements 1, 2, 3 form a platform essentially at ground level.
• These motors 4 have made it possible to lower the carriages 19, 20, 21 along the racks 1 1, 12 and the slides 15, 16, 17, 18 driving the mobile elements 1, 2, 3.
• the connecting rod 6 has allowed drive the positioning of the mobile element 2 by rotation around the axis 25, the wheels
• the motors 4 and 5 have been actuated so as to bring the platform constituted by the mobile elements 1, 2, 3 to the level of the floor. During this ascent, the carriages 19, 20, 21 moved under the effect of the motors 4, 5 along racks 11 and 12 and the slides 15, 16, 17, 18.
• FIGS. 8 and 9 schematically represent the operating mode of the safety device with which the embodiment of the walking device is equipped here described.
• a restraint arm 30 is fixed to step 3, for example by scudure.
• the constraint arm 30 rests on all of the 3 elements. An electromagnet 32 is then automatically actuated so as to engage locking means 31 in the constraint arm 30.
• a seal or a broom
• the device can comprise more than one intermediate lifting step, so as to form a device having more than three steps.
• devices with two intermediate elements are provided. This makes it possible to vary the stroke of the platform and its surface, as required.
• platform the high position of the first platform allows access to the second platform in the low position.
• the invention is not limited either to the area of the crossing of ruptures by people with reduced mobility. Indeed, she can find many other applications, for example in industry (factories, warehouses, etc.), public buildings.

Landscapes

• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Automation & Control Theory (AREA)
• Structural Engineering (AREA)
• Types And Forms Of Lifts (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Paper (AREA)
• Ladders (AREA)
• Vehicle Step Arrangements And Article Storage (AREA)
• Vehicle Body Suspensions (AREA)
• Advancing Webs (AREA)
• Noodles (AREA)
• Movable Scaffolding (AREA)
• Conveying And Assembling Of Building Elements In Situ (AREA)
• Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=26230533

Family Applications (1)

Country Status (7)

Cited By (1)

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• 1993
  • 1993-07-28 FR FR9309524A patent/FR2708258B1/fr not_active Expired - Lifetime
• 1995
  • 1995-02-02 ES ES95908306T patent/ES2168108T3/es not_active Expired - Lifetime
  • 1995-02-02 AT AT95908306T patent/ATE207846T1/de not_active IP Right Cessation
  • 1995-02-02 EP EP95908306A patent/EP0759005B1/de not_active Expired - Lifetime
  • 1995-02-02 AU AU16669/95A patent/AU1666995A/en not_active Abandoned
  • 1995-02-02 WO PCT/FR1995/000131 patent/WO1996023723A1/fr active IP Right Grant
  • 1995-02-02 DE DE69523583T patent/DE69523583T2/de not_active Expired - Lifetime

Non-Patent Citations (1)

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