Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B64—AIRCRAFT; AVIATION; COSMONAUTICS
  • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
  • B64F1/00—Ground or aircraft-carrier-deck installations
  • B64F1/30—Ground or aircraft-carrier-deck installations for embarking or disembarking passengers
  • B64F1/315—Mobile stairs
• • 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
  • B66B9/0807—Driving mechanisms
  • B66B9/083—Pull cable, pull chain

Definitions

• Elevator combined with stairs for the transport of disabled people, and in particular for access to airplanes with adaptable seat.
• the present invention is a device which peimet handicapped and disabled to easily access planes, during boarding and disembarking maneuvers by adapting on the side of all gangways of conventional type.
• this elevator slides vertically along two slides which are mounted on support axes by means of sliding sliding Mounted on a classic type bridge truck, it has a seat with retractable armrest and is fitted with safety wheel chocks to hold the wheelchair.
• a shock absorber on a retractable tray is below.
• This lift mounted on 3 cylindrical rollers with a wide-brimmed ear flange in insulating material such as Teflon, nylon with reinforced edges, rubber, with an axial mounting on integrated bearings, has 3 supports whose rolling axes slide on the vertical rails mounted on the frame.
• a counterweight system located opposite makes it possible to avoid lashing when loaded.
• the disabled can be transported either as it is commonly done on their own wheelchair, or on those of airport companies and is placed between the two thresholds of the tray, whose fold-down ensures the blocking of said seat, or still on a folding seat fixed on the frame, or even on a folding rolling seat specially designed to allow not only the entry to the aircraft, but also by very simple handling maneuvers allowing the elevation of said seat , its change of position, to obtain a reduced dimension, which ensures access to the final place of the disabled, inside the device.
• a winch located on the side of the gangway is driven by an electric motor producing a multiplied mechanical drive.
• Figure 2 View of the oblique movement system
• Figure 4 Front view of the frame: transport element
• Figure 5 Detailed view of the frame
• FIG. 8 Front view of the winch
• Figure 10 Front view of a wheelchair and 10 bis: detail of the mechanism
• Figure 9 Profile view of a wheelchair
• FIG. 11 Seat elevation mechanism Figure 12: View of the seat mechanism (it being folded).
• FIG. 1 represents the whole of the device comprising the vehicle which is used to transport the lift, taking into account that this vehicle already has a staircase on which the said lift fits.
• This elevator is constituted by 4 rails (1). Between two rails are the rollers (2) which allow during the upward movement directed by the cable (3) to advance, or move back the frame (4) which allows the transport of disabled people.
• the winch device (5) being placed on the right of the gangway with its counterweight system (6).
• the winch is driven by a DC electric motor, battery source or rectified current, generator.
• Figure 2 specifies the upward oblique movement
• the guide rail (7) follows the configuration of the upper end of the steps (8).
• half a set of fork wheels with anti-torque bars with a platform support pendulum (9) uniformly follows the movement of the rail (7) conforming to the shape of any staircase, which ensures height compensation and extends its application to any difference in levels encountered.
• the frame (4) and its flat surface (l ⁇ ) therefore always have with this system a constant horizontal level.
• the counterweight (6) is located in its vertical stroke, at the lowest point.
• a second embodiment is proposed which, by saving space, will provide a wider field of vision for the driver of the transport vehicle.
• the counterweight (6) is folded down under a sheath (11) which is applied under the frame of the staircase.
• Figure 3 shows the entire system seen in profile: it includes the rails (1) on which will slide the rollers (2) which are three in number, these rollers have atria (12) at each of their ends to maintain the lateral load.
• the frame (13) has a triangular shape more visible in Figure 4. Its representation in profile in Figure 3 clearly shows the position of the rollers (2) which are mounted on integrated bearings.
• This frame is composed of 3 brackets (14) whose purpose is to guide the frame and avoid lateral oscillations. It includes 3 trees which allow the mounting of the bearings (16) and the self-tightening of said bearings by means of side bars (17) which secure them. On the shafts (15), the chamfered edges (18) were poured on the end, on the frame side, which keeps the 3 bearings in their cages.
• the frame (4) has at its base 2 support arms (19) which hold the platform (10).
• a seat (23) is fixed to the said frame, platform, seat and armrests which fold back onto the frame if necessary.
• the paling winch system with the counterweight (6) which provides flexible raising and lowering, the winding of the cable on the pulley allowing the movement back and forth.
• Figure 4 the frame seen from the front shows that there is a threshold adjustment (20) which can move horizontally at a maximum angle of 180 ° in the directions.
• the purpose of this tray threshold is to make up for the wheel radius, which are of different dimensions depending on the type of wheelchair.
• the clamping tubulars (21) are welded to the frame to allow the installation of accessories such as sun visor, retractable umbrella.
• the slides are held and closed by 2 U-shaped uprights (22) and are extended on both sides by edges, with fixing and close bolting.
• an electric switch (55) At the end of the stroke there is an electric switch (55) which allows instantaneous stopping if necessary.
• FIG. 5 represents the frame seen from the front with the seat (23) and the foldable accessories (24). It has at its base a platform (10) on which are added to the 2 lateral ends 2 tray thresholds which include a movable folding and adjustable part whose role is to ensure the take-up of the chair wheels.
• the adjustment (20) of the threshold is obtained by means of 2 threaded bolts of which a return spring makes it possible to also adjust the return position with a safety lock for blocking.
• the oblique sliding of the elevator obtained by means of 4 rails (1) shows that the offset shoulders (26) in each superimposed rail allows during the passage of the frame to avoid a buffer accout by eliminating any vibration.
• These rails are telescopic and it is to obtain a continuous and uniform sliding that at the contact surfaces, there has been provided an offset of the shoulders (26) between the 2 rails, the whole allowing the catching up on height and in width. 2 superimposed rails.
• Figure 6 shows the frame in its profile position and above.
• the frame seen in profile brings out the various elements mentioned above by showing in the upper part the double support (31) which comes to fit on the tubes (21) allowing the addition of accessories such as a blind of the type sun visor, umbrella (32), which ensures additional well being for disabled people during their journey on this lift.
• the folded position of the seat and the armrests allows the disabled to be placed on his wheelchair.
• the deployment of the seat and its accessories, on the other hand, will ensure the transport of all disabled persons without their wheelchair.
• the return spring (33) maintains the folding seat in the vertical position.
• the guide (7) ends with conventional means of fixing and spacers.
• a leg support (39) of suitable shape is also provided, for example in a half-moon, this support is mounted on the outer edges of the platform by means of a calibrated spring ball (40) being introduced inside a rib (41) located on the front of the platform and the length of which is studied so as to be able, by sliding, to position this accessory for its use, whatever the leg to be maintained.
• This device can also be adjusted in height by a telescopic sliding system. The position of the shock absorber (27) is visible in this figure.
• Figure 7 shows the profile of the winch and in particular a safety device applied to the pawl (42), seen in the mounted safety position and the pawl (43) seen in the down position. These pawls lock the winch by means of a relay with magnetic contactor (44) (45
• the pawl (43) In the mounted position, the pawl (43) must be released via the handle (51) with the help of a thrust cam (52). In the down position the operation is reversed. Access to the manual maneuver is facilitated since the whole system is placed laterally on the internal edge of the staircase.
• This winch is powered by a direct current electric motor.
• a flywheel (50) At the end of the armature is added a flywheel (50) provided with a relay brake (49).
• This motor relay brake is mounted on the said motor and also on the stop button, which causes the automatic blocking of the load in the event of a cut, bad loads or other mechanical incidents. Given that any stop of the said button cuts off all energy sources, which provides additional security.
• FIGS. 9 and 10 complete this elevator device by adapting a folding seat, adapted to said elevator and providing numerous handling advantages.
• This seat consists of a chassis (61), the lateral ends of which are hollowed out and rounded to serve as a lifting handle (62) with three independent wheels and a directional front wheel (360 °) mounted on a pivot.
• the back of the seat is composed of a device pe putting the sliding of the seat (63) to which it is centered by a rack mounted on an axis (64)
• Lateral handles (65) provide transport.
• the sliding operations are carried out by means of a jack pedal (66).
• the seat is adjustable to allow the load to vary according to the weight of the person to be transported. This adjustment is made using a helical spring (67).
• this seat is mounted on a horizontal axis with a stop stop and a vertical axis for pivoting (69).
• Figure 10a shows the detail of the seat adjustment system. Under this is the setting lever (68) whose rotation acts on the spring band by means of a threaded rod (72) to assume the imposed load.
• the arm of the seat support (70) is mounted on the central axis (64) to allow its translational movement with a predetermined angle opening, ensuring a horizontal seat; in the axis (64) is placed a groove in which is the arm (70) to allow an up and down stroke during the movement of folding of the assembly.
• a locking bolt (71) is provided in the event of the pivoting not being used.
• a telescopic assembly (74) comprising two support guide columns ensures the movements of the seat along the central axis (64) and of the lateral tubes (76).
• FIG. 11 shows an exploded view of the mechanism located between the side tubes. It comprises a pedal (66) which allows the lifting operations by means of a rack (77). At the upper part of the axle is a travel stop clip clamp (75), a self-locking clamping system on the axle (79). At the base of the chassis an axis with a screw thread of the steerable steer type (80) supports the full weight of the load which determines the orientability and rotation of the axis (64) and the arm (70) , i.e. from the whole seat. Two guide columns (74) for sliding support ensure the movements of the seat, as well as the safety pawl (81).
• Figure 12 shows the folded wheelchair.
• the folding maneuver is made by means of an axis (82) integral with the chassis and placed inside. It allows rotation up to the vertical plane, while blocking in the open position is effected by means of two brackets (73) using a bolt which secures the frame. All the elements: seat, accessories being folded, the vertical assembly comes by rotation around said axis, in a horizontal position. The reverse operation allows it to be folded up and to save space.
• This lift intended to allow easy access for any disabled person, whether on his wheelchair or not, is more particularly suited to aircraft access.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Automation & Control Theory (AREA)
• Structural Engineering (AREA)
• Aviation & Aerospace Engineering (AREA)
• Handcart (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9232140

Family Applications (1)

Country Status (3)

Cited By (5)

Citations (2)

Family Cites Families (1)

• 1979
  • 1979-11-21 FR FR7929202A patent/FR2470053A1/fr active Granted
• 1980
  • 1980-11-20 EP EP19800902233 patent/EP0040225A1/fr not_active Withdrawn
  • 1980-11-20 WO PCT/FR1980/000164 patent/WO1981001397A1/fr not_active Application Discontinuation

Patent Citations (2)

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