EP1119513B1 - Aufzugsanordnung und verfahren zur verschiebung eines aufzugs - Google Patents

Aufzugsanordnung und verfahren zur verschiebung eines aufzugs Download PDF

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Publication number
EP1119513B1
EP1119513B1 EP99949449A EP99949449A EP1119513B1 EP 1119513 B1 EP1119513 B1 EP 1119513B1 EP 99949449 A EP99949449 A EP 99949449A EP 99949449 A EP99949449 A EP 99949449A EP 1119513 B1 EP1119513 B1 EP 1119513B1
Authority
EP
European Patent Office
Prior art keywords
lift
supporting section
carrier
assembly according
lift assembly
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
EP99949449A
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English (en)
French (fr)
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EP1119513A1 (de
Inventor
Otto Ooms
Alex Ooms
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Otto Ooms BV
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Otto Ooms BV
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Filing date
Publication date
Application filed by Otto Ooms BV filed Critical Otto Ooms BV
Publication of EP1119513A1 publication Critical patent/EP1119513A1/de
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Publication of EP1119513B1 publication Critical patent/EP1119513B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66B9/0838—Levelling gears

Definitions

  • the invention relates to a lift assembly
  • a lift assembly comprising a rail system including a supporting section and a lift, for example a chair lift for a disabled person, which is movable along said supporting section, wherein the lift is capable of upward and downward movement at various angles of inclination, the horizontal direction included, said lift comprising a carrier and means for maintaining the carrier substantially in a predetermined position during said movement, which means comprise a guide surface made up of a portion of the surface of the supporting section, along which detection means mounted on the lift can move for adjusting the position of the carrier.
  • a lift assembly is known for example from GB-A-2 174 362.
  • This kind of lifts can be used for carrying a disabled person, who is unable to use the stairs, up or down along the staircase.
  • the rail system is thereby mounted along the staircase in such a manner that a lift disposed above the staircase can move along said rail system.
  • the rail along which the lift moves may be fixed to a wall beside the staircase, for example, but it may also be fixed to supports which are secured to the treads on the side of the staircase.
  • the carrier may be in the form of a chair on which a person can be seated, but it.may also consist of a platform onto which an invalid chair can be moved. Also other lift constructions are possible.
  • the rail system may consist of a straight assembly of sections, which is mounted at the same angle as the staircase.
  • the connection between the lift and said rail system is effected in that the lift engages the rail system by means of one or more guide units attached to the lift, wherein the lift occupies a substantially straight position, that is, extending at a particular angle with respect to the rail system, at all times.
  • the rail system may furthermore be provided with a rack, which can mesh with a gear attached to the lift; so that when the gear is driven by means of an electric motor present in the lift, the lift is moved along the rail system.
  • a staircase comprises not only a straight portion, but a staircase may extend at different angles of inclination at different locations, it may comprise a horizontal portion (that is, a portion wherein the angle of inclination is 0°) and it may comprise bends.
  • the rail system extending along the staircase must be so constructed that the lift will maintain a predetermined position at all times during its movement along the rail system.
  • the rail system may be fitted with two supporting guides for that purpose, wherein the position of the lift with respect to the rail system is determined by the spacing between the supporting guides. Consequently, said spacing must vary such that, depending on the angle of inclination of the rail system, a predetermined lift position will be maintained at all times.
  • the two guides may be positioned more closely together when the inclination of the staircase, and thus of the rail system, is steeper.
  • One drawback of a system of this kind is the fact that the use of two supporting guides involves additional installation costs and the use of additional materials, whilst also additional space is required and the optical effect is not very aesthetic.
  • EP 0 560 433 discloses a lift assembly wherein only one supporting guide is used.
  • a cam disc which is mounted in the lift is used, which cam disc rotates synchronously with the lift movement.
  • the cam disc contains information on the angles of inclination, and a cam follower moves the lift to the desired position.
  • One drawback of such a system is that when a lift assembly is to be mounted along a particular staircase, the staircase must be precisely measured, after which the shape of the cam disc must be calculated on the basis of said measurement. In practice the system appears to be very sensitive to deviations in the cam disc, which is relatively small in comparison with the total length of the staircase, as a result of which it is difficult to maintain a straight position of the lift.
  • the object of the invention is to provide a lift assembly comprising one supporting guide, which is maintained in a predetermined position in an effective manner.
  • the rail system is designed such that it can be reused, at least to a large part, and means for maintaining a fixed position of the carrier are provided in a simple and reliable manner upon installation. Especially because sometimes a lift assembly is present in a house for only a short period of time, after which it must be removed again, it is very advantageous if a considerable part of such a lift assembly can be reused and be installed in a simple manner.
  • a lift assembly according to the present invention is defined in the independent claim 1. Preferred embodiments are set out in the dependent claims.
  • said detection means comprises at least one roller, which can roll on said guide surface, thus achieving frictionless, precise guidance.
  • the supporting section preferably has a constant cross-sectional dimension substantially along its entire length, for example consisting of a round tube
  • the rail system comprises a supporting surface substantially along its entire length
  • the lift includes stabilizing means abutting against said supporting surface, wherein said stabilizing means comprises a roller which can roll on said supporting surface, so that the lift is prevented from rotating round the supporting section, whilst nevertheless only one supporting section is used.
  • the supporting surface is preferably made up of a lateral surface of a rack mounted on the supporting section, which can mesh with a driven gear of the lift.
  • the rack is preferably mounted on the underside of the supporting section.
  • the detection means detects a change in the angle of inclination of the supporting section, and the position of the carrier is adjusted in response thereto.
  • the detection means preferably moves along the guide surface in spaced relation to the guide unit, both before and behind the guide unit.
  • the part of the detection means which moves along the guide surface is preferably connected to the guide unit by means of a pivoted arm, and the guide unit may for example comprise a switch which is connected to said pivoted arm.
  • the detection means is furthermore connected to an adjusting motor, which is capable of maintaining the carrier in a fixed position.
  • the speed at which the carrier is controlled and/or the speed of the lift depend(s) on the position of the pivoted arm in this embodiment. This ensures a comfortable, smooth and precise movement of the lift.
  • correction means are furthermore present for carrying out an error correction for the carrier position, whereby for example said correction means measure the angle between the carrier and the lift on a portion of the supporting guide that has an angle of inclination which is known.
  • Said correction means are capable of correcting the errors in the lift position that may occur after some time.
  • the lift can be moved to a predetermined position with respect to the supporting guide each time when it reaches its end position, at the top or at the bottom of the rail system, whereby a possible error in the carrier position is corrected.
  • the invention furthermore relates to a method for moving a lift along a rail system including a supporting section as defined in the claims.
  • Figure 1 shows a lift assembly mounted on a staircase.
  • a plurality of supporting members 2 are mounted on a staircase 1 by means of bases 3 which can be fixed to the treads of a staircase, for example by means of screws.
  • Said bases 3 may include an additional tube member 29, so as to enable adjustment of the height of the supporting member 2. This will be explained with reference to Figure 4.
  • Each supporting member 2 has a point of attachment 4, to which a supporting section 6 can be attached by means of a fixing element 5.
  • Said supporting section 6 is assembled from a plurality of straight tube sections and a plurality of bent tube sections of circular cross-section. Said tube sections are interconnected by coupling members, which can be slid into the ends of two joining tube sections.
  • the interconnection of the tube sections may be strong enough by itself already, because the coupling members are provided with a clamped fit, but it is also possible to secure the ends of the tube sections to the coupling members by means of screws.
  • Supporting section 6 is attached to the fixing element 5, which can rotate about a horizontal axis of rotation through point of attachment 4, in such a manner that the central axis of said section 6 intersects the horizontal axis of rotation through point of attachment 4.
  • Figure 1 also shows a lift in several positions thereof, which lift may comprise a chair for moving a handicapped person along the staircase in seated position.
  • the lift comprises a frame 7 (represented only schematically), to which a guide unit 8 is attached, which is capable of rotation about a horizontal axis 9 with respect to frame 7.
  • a carrier, a chair in this embodiment, which is rigidly connected to frame 7, is maintained in a fixed position thereof through the use of detection means (not shown) which moves along a guide surface, two embodiments of which will be discussed in more detail hereafter.
  • Guide unit 8 comprises guide rollers 10, 11, which can roll on supporting section 6 with a concave tread.
  • Guide unit 8 furthermore comprises a third guide roller 12, which can likewise roll on section 6.
  • Guide unit 8 is rotatable with respect to frame 7 about a substantially horizontal axis 9, which intersects the central axis of supporting section 6.
  • the driving gear of the lift consists of a rack 13, which is mounted under supporting section 6 and which has downwardly extending teeth. Said teeth can mesh with a gear 14, which is disposed beside guide roller 12 and which is driven via a shaft on which said guide roller 12 is mounted.
  • the above-described driving gear is also shown in Figure 2 and will be explained in more detail with reference to that figure.
  • Figure 2 shows a detail, wherein the rail system is shown partially in sectional view, as is part of the lift.
  • the figures shows a supporting member 2 of the rail system, to which fixing element 5 is attached.
  • the figure illustrates the manner in which supporting section 6 is fastened to supporting member 2 by means of bolts 15, in that fixing element 5 is provided with a hole, through which bolt 15 can extend, and supporting section 6 is provided with a threaded hole, into which bolt 15 can be screwed.
  • Fixing element 5 can be fixed in various angular positions with respect to axis of rotation 16 thereby. Axis of rotation 16 coincides with point of attachment 4 as shown in Figure 1.
  • the tubes that make up the supporting section 6 can be reused without the presence of the threaded holes being objectionable thereby. Possibly, said holes can be covered by screwing a screw into said holes.
  • Guide rollers 10, 11 and a guide roller 12 can roll on supporting section 6.
  • Guide roller 12 is mounted on shaft 17 of electric motor 18, which drives the lift.
  • gear 14 engages in a rack 13 which is mounted on the underside of supporting section 6.
  • gear 14 is mounted directly on the shaft of electric motor 18, but it is also possible for gear 14 to be driven by an electric motor via a reduction gear unit.
  • Guide unit 8 comprises a roller 37, which can roll on the side of rack 13, thus preventing the lift from rotating round supporting section 6.
  • Figure 3 shows an embodiment, wherein the lift is shown in various positions thereof.
  • Guide unit 8 is thereby provided with a lateral point of attachment 30 on the upper side, to which an adjusting unit 31 is pivotally connected.
  • Said adjusting unit may comprise an electric motor with a screwed spindle or rack-and-pinion reduction gearing, which is directly connected to point of attachment 30.
  • the upper end of adjusting unit 31 is connected to frame 7, on which a chair can be mounted.
  • the adjusting unit 31 is controlled by two switches (not shown), which are connected to and operated by detection means in the form of two spring-loaded, forwardly and rearwardly extending arms 32, 33, which are pivotally connected to guide rollers 10 and 11, on which wheels 34, 35 are mounted. Said wheels roll on a guide surface 36, which is formed by the upper side of supporting section 6.
  • one switch When the angle of inclination of supporting section 6 changes, one switch will first be moved to its lower or upper position. The moment the angle of inclination of guide unit 8 changes, also the second switch will be moved to the lower or the upper position, and the motor of adjusting unit 31 will be activated to adjust the angle between guide unit 8 and frame 7. Adjusting unit 31 will be deactivated as soon as guide unit 8 has reached the new angle of inclination and one of the two switches has moved to the central position.
  • the degree to which an adjustment to the various angles of inclination is to be made can be set by storing information on successive angles of inclination of the supporting section 6 on an information carrier, which is connected to the control unit of adjusting unit 31. Also an embodiment wherein the switches are capable of accurately measuring the changes in the angle of inclination is possible.
  • the adjusting unit 31 can only function when the lift motor 18 is activated.
  • the direction of rotation of the motor of adjusting unit 31 depends on the direction of rotation of the lift motor 18 (lift moving up and down), and it is controlled by the position of the switches (up or down). If the bending radius of the vertical bends in supporting section 6 is the same, there will be a difference in the distance travelled in an inside bend and an outside bend (seen in the vertical plane). This can be overcome by having the speed of the movement of adjusting unit 31 depend on the position of the two switches. This dependence can also be used for decelerating and accelerating near vertical bends, whereby the speed depends on a change in the position of one of the two switches.
  • the lift may be fitted with two stop switches, which limit the travel of guide unit 8 on supporting section 6.
  • the angles of inclination in certain parts of supporting section 6 are known, so that it is possible to incorporate a facility in the control system by which the position of frame 7 is determined and corrected, if necessary, when the lift is at a standstill in such a part, for example at the stop switches. This may for example be done by measuring the angle between frame 7 and guide unit 8 at the pivoting point.
  • an electronic level is incorporated in frame 7, which checks its position continuously and corrects it, if necessary, and which stops the lift when the deviation is found to be too large.
  • the use of the lift assembly as described above enables relatively quick and easy installation of the lift assembly, even without measuring the staircase precisely in advance. All elements can be reduced with hand tools and made to size by means of said tools. The installation of a lift system has thus become relatively easy.
  • the dismounting of the lift assembly can take place in a simple manner, such that the parts can be reused after being disassembled. It is possible thereby to sort the used parts and store them until certain parts can be reused. It is also possible, however, starting from an existing lift assembly which is to be removed, to form a new lift assembly, and that to size, for another staircase. By measuring both the old staircase and the new one it is then possible to determine by means of a relatively simple calculation which parts of the old lift assembly can remain unchanged, which parts are to be reduced and/or which parts are to be supplemented with parts to be added.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Claims (16)

  1. Aufzugsanordnung mit einem Schienensystem, umfassend einen Stützabschnitt (6) und einen Aufzug (7), z. B. einen Sitzaufzug für eine behinderte Person, umfassend eine drehbare Führungseinheit (8), die entlang des Stützabschnittes (6) bewegbar ist, wobei der Aufzug (7) fähig ist, eine Aufwärts- und Abwärtsbewegung in verschiedenen Neigungswinkeln auszuführen, wobei der Aufzug (7) ein Tragelement und ein Mittel zum Halten des Tragelementes während der Bewegung im wesentlichen in einer vorbestimmten Lage aufweist, wobei das Mittel eine Führungsoberfläche (36) umfaßt, die aus einem Abschnitt der Oberfläche des Stützelementes (6) besteht, entlang dessen ein Erfassungsmittel (34, 35), das an dem Aufzug (7) angeordnet ist, bewegbar ist, um die Lage des Tragelementes einzustellen, dadurch gekennzeichnet, daß das Erfassungsmittel (34, 35) eine Änderung des Neigungswinkels des Stützabschnittes (6) erfaßt und die Lage des Tragelementes als Reaktion darauf eingestellt wird.
  2. Aufzugsanordnung nach Anspruch 1, dadurch gekennzeichnet, daß das Erfassungsmittel mindestens ein Rad (34, 35) umfaßt, das auf der Führungsoberfläche (36) rollen kann.
  3. Aufzugsanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Stützabschnitt (6) eine konstante Querschnittsabmessung entlang im wesentlichen seiner gesamten Länge aufweist.
  4. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Stützabschnitt (6) ein im wesentlichen rundes Rohr umfaßt.
  5. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Schienensystem eine Stützoberfläche (13) entlang im wesentlichen seiner gesamten Länge aufweist und daß der Aufzug (7) ein Stabilisierungsmittel (37) umfaßt, das an der Stützoberfläche anliegt, wobei das Stabilisierungsmittel ein Rad umfaßt, das auf der Stützoberfläche rollen kann, so daß der Aufzug (7) daran gehindert ist, sich um den Stützabschnitt zu drehen, wobei das Stabilisierungsmittel bevorzugt ein Rad (37) umfaßt, das auf der Stützoberfläche (13) rollen kann.
  6. Aufzugsanordnung nach Anspruch 5, dadurch gekennzeichnet, daß die Stützoberfläche aus einer seitlichen Oberfläche einer Zahnstange (13) besteht, die an dem Stützabschnitt (6) angeordnet ist.
  7. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß eine Zahnstange (13) an dem Stützabschnitt (6) angeordnet ist, wobei in die Zahnstange ein Antriebszahnrad (14) des Aufzuges (7) greifen kann.
  8. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sich das Erfassungsmittel entlang der Führungsoberfläche in einem Abstand von der Führungseinheit (8) bewegt.
  9. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Erfassungsmittel sich entlang der Führungsoberfläche in einem Abstand von der Führungseinheit bewegt, sowohl vor wie auch hinter der Führungseinheit (8).
  10. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Teil des Erfassungsmittels, der sich entlang der Führungsoberfläche bewegt, mit der Führungseinheit (8) durch einen angelenkten Arm verbunden ist.
  11. Aufzugsanordnung nach Anspruch 10, dadurch gekennzeichnet, daß die Führungseinheit (8) einen Schalter umfaßt, der fähig ist, in Abhängigkeit von der Lage des angelenkten Armes zu schalten.
  12. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß das Erfassungsmittel mit einem Stellmotor verbunden ist, der fähig ist, das Tragelement in einer festen Lage zu halten.
  13. Aufzugsanordnung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß die Geschwindigkeit, mit der das Tragelement gesteuert wird, und / oder die Geschwindigkeit des Aufzuges (7) von der Lage des angelenkten Armes abhängt (abhängen).
  14. Aufzugsanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß Korrekturmittel vorhanden sind, um eine Fehlerkorrektur für die Lage des Tragelementes auszuführen.
  15. Aufzugsanordnung nach Anspruch 14, dadurch gekennzeichnet, daß die Korrekturmittel den Winkel zwischen dem Tragelement und dem Aufzug (7) an einem Abschnitt der Stützführung messen, der einen bekannten Neigungswinkel aufweist.
  16. Verfahren zum Bewegen eines Aufzuges (7), z. B. eines Sitzaufzug für eine behinderte Person, entlang eines Schienensystems mit einem Stützabschnitt (6), wobei der Aufzug (7), der eine drehbare Führungseinheit (8) umfaßt, entlang des Stützabschnittes (6) bewegt wird, wobei der Aufzug (7) sich aufwärts und abwärts in verschiedenen Neigungswinkeln bewegt, wobei der Aufzug (7) ein Tragelement und ein Mittel zum Halten des Tragelementes während der Bewegung in einer im wesentlichen vorbestimmten Lage umfaßt, wobei ein Erfassungsmittel (34, 35), das an dem Aufzug (7) angeordnet ist, sich entlang einer Führungsoberfläche (36) bewegen kann, die von einem Abschnitt der Oberfläche des Stützabschnittes (6) gebildet ist, um die Lage des Tragelementes einzustellen, dadurch gekennzeichnet, daß das Erfassungsmittel (34, 35) eine Änderung des Neigungswinkels des Stützabschnittes (6) erfaßt und die Lage des Tragelementes als Reaktion darauf eingestellt wird.
EP99949449A 1998-10-01 1999-09-30 Aufzugsanordnung und verfahren zur verschiebung eines aufzugs Expired - Lifetime EP1119513B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1010229A NL1010229C2 (nl) 1998-10-01 1998-10-01 Liftsamenstel en werkwijze voor het verplaatsen van een lift.
NL1010229 1998-10-01
PCT/NL1999/000608 WO2000020319A1 (en) 1998-10-01 1999-09-30 Lift assembly and method for moving a lift

Publications (2)

Publication Number Publication Date
EP1119513A1 EP1119513A1 (de) 2001-08-01
EP1119513B1 true EP1119513B1 (de) 2005-03-30

Family

ID=19767910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99949449A Expired - Lifetime EP1119513B1 (de) 1998-10-01 1999-09-30 Aufzugsanordnung und verfahren zur verschiebung eines aufzugs

Country Status (5)

Country Link
EP (1) EP1119513B1 (de)
AT (1) ATE292083T1 (de)
DE (1) DE69924511T2 (de)
NL (1) NL1010229C2 (de)
WO (1) WO2000020319A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2397289A (en) * 2000-08-10 2004-07-21 Minivator Ltd A stairlift assembly with angled rack and pinion
ITMI20051904A1 (it) * 2005-10-10 2007-04-11 Vimec S P A SERVOSCALA CON MEZZI DIMPèOSIZIONAMENTO ANGOLARE
NL2001573C2 (nl) 2008-05-13 2009-11-16 Ooms Otto Bv Traplift.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888099A (en) * 1955-04-26 1959-05-26 Shepard Warner Elevator Compan Chair lift
GB2174362A (en) * 1983-02-17 1986-11-05 Antony Stopher Stairlift track
GB9111153D0 (en) * 1991-05-23 1991-07-17 Grorud Bison Bede Ltd Stairlift and rail for stairlift
GB9400056D0 (en) * 1994-01-05 1994-03-02 Stannah Stairlifts Ltd Stairlift levelling arrangement
GB9511508D0 (en) * 1995-06-07 1995-08-02 Bison Bede Limited Lift apparatus

Also Published As

Publication number Publication date
NL1010229C2 (nl) 2000-04-04
WO2000020319A1 (en) 2000-04-13
ATE292083T1 (de) 2005-04-15
EP1119513A1 (de) 2001-08-01
DE69924511T2 (de) 2006-02-09
DE69924511D1 (de) 2005-05-04

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