EP0684204A2 - Vertical lift - Google Patents

Vertical lift Download PDF

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Publication number
EP0684204A2
EP0684204A2 EP95106053A EP95106053A EP0684204A2 EP 0684204 A2 EP0684204 A2 EP 0684204A2 EP 95106053 A EP95106053 A EP 95106053A EP 95106053 A EP95106053 A EP 95106053A EP 0684204 A2 EP0684204 A2 EP 0684204A2
Authority
EP
European Patent Office
Prior art keywords
drive
drive wheels
pair
vertical elevator
elevator according
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.)
Granted
Application number
EP95106053A
Other languages
German (de)
French (fr)
Other versions
EP0684204A3 (en
EP0684204B1 (en
Inventor
Wilfried Dr. Ing. Hein
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.)
Hiro Lift Hillenkoetter and Ronsieck GmbH
Original Assignee
Hiro Lift Hillenkoetter and Ronsieck GmbH
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
Application filed by Hiro Lift Hillenkoetter and Ronsieck GmbH filed Critical Hiro Lift Hillenkoetter and Ronsieck GmbH
Publication of EP0684204A2 publication Critical patent/EP0684204A2/en
Publication of EP0684204A3 publication Critical patent/EP0684204A3/en
Application granted granted Critical
Publication of EP0684204B1 publication Critical patent/EP0684204B1/en
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
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0446—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with screw-nut or worm-screw gear

Definitions

  • the invention relates to a vertical elevator according to the preamble of claim 1.
  • a single drive motor drives drive wheels which are also aligned with one another and run on different roadway profiles via two shafts which come out on different sides and are aligned with one another.
  • the drive wheels are coupled in a form-fitting manner via concentric gearwheels to the opposing counterwheels running on the same lane profiles.
  • the invention is based on the object of designing a vertical elevator of the type presumed to be known in such a way that it enables a fast and low-noise drive.
  • a driving cabin 1 runs between two vertical, permanently installed roadway profiles 2 and 3.
  • the roadway profiles 2 and 3 have a double-T profile.
  • the drive wheels 6 and 7 run on the carriageway profile 3, on opposite sides of the middle leg.
  • the drive wheels 4 and 5 run on the opposite sides of the middle leg of the roadway profile 2, the drive wheels 4 and 5 run.
  • the drive wheels carry coatings 4a, 5a, 6a, 7a on their circumference with which they run on the opposite surfaces of the roadway profiles.
  • the drive wheels 4 and 6, which are aligned with one another, are rotated via drive shafts 13 and 12, which are also aligned with one another.
  • the aligned drive wheels 5 and 7 are rotated via aligned drive shafts 14 and 15.
  • the arrangement or mounting of the drive motors and the drive shafts is different in the different embodiments. In both cases, two drive motors 8 and 9 with associated gears 8b and 9b are provided.
  • the drive shafts 12 and 13 are mounted in fixed bearing devices 16 and 17.
  • the motor 9 with a gear 9b sits on a rocker arm 9a which is pivotable about the common longitudinal axis of the drive shafts 12 and 13.
  • the handlebar 9a is penetrated by the drive shaft 14 which is freely rotatable therein.
  • the drive motor 8 is arranged vertically and provided with a gear 8b.
  • the gear 8b drives the drive shafts 14 and 15.
  • the gear 8b is fixedly connected to a link 8a which can be pivoted about the central axis of the drive shafts 13 and 12.
  • the drive shaft 12 passes freely through the handlebar 8a.
  • the drive shafts are held via the bearing devices 16 and 17 which are firmly connected to the cabin 1.
  • a spring element 18 for example a compression spring, in particular a gas pressure spring, acts on the extension 8c.
  • the spring element 18 increases the contact pressure of the drive wheels on the associated roadway profiles.
  • the drive motors 8 and 9 are both arranged horizontally.
  • the transmission 9b is firmly connected to the vehicle cabin 1.
  • the drive shafts 12 and 13 are mounted in the same manner as in the embodiments according to FIGS. 1 and 2 in bearings 16 and 17 fixed to the car.
  • the drive shafts 14 and 15 are also mounted in bearings 18 and 19 fixed to the car device.
  • the transmission 8b is fixed to the car 1.

Abstract

The vertical lift has two parallel, vertical tracks (2;3) and has, on the opposite sides, two pairs of drive wheels (4,5;6,7). Each pair of drive wheels running on differently shaped tracks is driven by its own drive motor (9,8) via, if necessary, a gear (9b,8b). The aligned drive shafts (12,13) of solely one pair of flush drive wheels (4;6) are fixed and pivot mounted on the lift, while the second pair of aligned drive shafts (14,15) is pivotally guided in guide rods (8a,9a) which are swivelled on the same pivot axle as the first pair of drive wheels. At least one guide rod is pre-stressed by a spring element to increase the compressive force of the drive wheels.

Description

Die Erfindung betrifft einen Vertikalaufzug nach dem Oberbegriff des Anspruchs 1.The invention relates to a vertical elevator according to the preamble of claim 1.

Bei einem bekannten Aufzug dieser Art (DE 41 22 855 A1) treibt ein einziger Antriebsmotor über zwei zu unterschiedlichen Seiten abgehende, miteinander fluchtende Wellen ebenfalls miteinander fluchtende, an unterschiedlichen Fahrbahnprofilen ablaufende Antriebsräder an. Die Antriebsräder sind über konzentrische Zahnräder mit den jeweils gegenüberliegenden und an den jeweils gleichen Fahrbahnprofilen ablaufenden Gegenrädern formschlüssig gekoppelt.In the case of a known elevator of this type (DE 41 22 855 A1), a single drive motor drives drive wheels which are also aligned with one another and run on different roadway profiles via two shafts which come out on different sides and are aligned with one another. The drive wheels are coupled in a form-fitting manner via concentric gearwheels to the opposing counterwheels running on the same lane profiles.

Die über Zahnräder erfolgende formschlüssige Kopplung von Rädern und Gegenrädern erzeugt in bestimmten Anwendungsfällen, insbesondere bei hohen Fahrgeschwindigkeiten vergleichsweise hohe Fahrgeräusche.The form-fitting coupling of wheels and counterwheels via gearwheels generates comparatively high driving noises in certain applications, particularly at high driving speeds.

Der Erfindung liegt die Aufgabe zugrunde, einen Vertikalaufzug der als bekannt vorausgesetzten Gattung so auszubilden, daß er einen schnellen und geräuscharmen Antrieb ermöglicht.The invention is based on the object of designing a vertical elevator of the type presumed to be known in such a way that it enables a fast and low-noise drive.

Die Lösung dieser Aufgabe erfolgt mit den Merkmalen des Kennzeichnungsteils von Anspruch 1.This object is achieved with the features of the labeling part of claim 1.

Bevorzugte Ausgestaltungen der Erfindung sind in den Unteransprüchen beschrieben.Preferred embodiments of the invention are described in the subclaims.

Das Vorsehen von zwei Antriebsmotoren, deren jeder jeweils eins von zwei an einem Fahrbahnprofil ablaufenden Antriebsrädern dreht, läßt einen besonders einfachen Aufbau eines Antriebs für Vertikalaufzüge mit hoher Leistung zu. Dabei sind sowohl große Lasten als auch hohe Laufgeschwindigkeiten möglich.The provision of two drive motors, each of which rotates one of two drive wheels running on a roadway profile, permits a particularly simple construction of a drive for vertical lifts with high performance. Both large loads and high running speeds are possible.

Nachstehend werden bevorzugte Ausführungsformen der Erfindung anhand der Zeichnung im einzelnen beschrieben. Es zeigen:

  • Figur 1 - eine schematische Seitenansicht einer ersten Ausführungsform,
  • Figur 2 - eine Draufsicht auf die Ausführungsform gemäß Figur 1,
  • Figur 3 - eine zu Figur 1 analoge Seitenansicht einer zweiten Ausführungsform,
  • Figur 4 - eine Draufsicht analog Figur 2 auf die zweite Ausführungsform.
Preferred embodiments of the invention are described in detail below with reference to the drawing. Show it:
  • FIG. 1 - a schematic side view of a first embodiment,
  • FIG. 2 shows a top view of the embodiment according to FIG. 1,
  • FIG. 3 - a side view of a second embodiment analogous to FIG. 1,
  • Figure 4 - a plan view analogous to Figure 2 of the second embodiment.

Bei den unterschiedlichen Ausführungsformen sind gleiche oder einander entsprechende Teile jeweils mit gleichen Bezugszeichen versehen, sie unterscheiden sich bei Bedarf jedoch durch Hochstriche voneinander.In the different embodiments, the same or corresponding parts are each provided with the same reference numerals, but differ from one another if necessary by means of prime lines.

Eine Fahrkabine 1 läuft zwischen zwei vertikalen, ortsfest installierten Fahrbahnprofilen 2 und 3. Die Fahrbahnprofile 2 und 3 haben Doppel-T-Profil. Am Fahrbahnprofil 3 laufen die Antriebsräder 6 und 7 ab, und zwar an einander gegenüberliegenden Seiten des Mittelschenkels. An den einander gegenüberliegenden Seiten des Mittelschenkels des Fahrbahnprofils 2 laufen die Antriebsräder 4 und 5 ab. Die Antriebsräder tragen an ihrem Umfang, mit dem sie an den gegenüberliegenden Flächen der Fahrbahnprofile ablaufen, bei Bedarf Beschichtungen 4a, 5a, 6a, 7a.A driving cabin 1 runs between two vertical, permanently installed roadway profiles 2 and 3. The roadway profiles 2 and 3 have a double-T profile. The drive wheels 6 and 7 run on the carriageway profile 3, on opposite sides of the middle leg. On the opposite sides of the middle leg of the roadway profile 2, the drive wheels 4 and 5 run. The drive wheels carry coatings 4a, 5a, 6a, 7a on their circumference with which they run on the opposite surfaces of the roadway profiles.

Die miteinander fluchtenden Antriebsräder 4 und 6 werden über ebenfalls miteinander fluchtende Antriebswellen 13 und 12 gedreht. Die miteinander fluchtenden Antriebsräder 5 und 7 werden über miteinander fluchtende Antriebswellen 14 und 15 gedreht.The drive wheels 4 and 6, which are aligned with one another, are rotated via drive shafts 13 and 12, which are also aligned with one another. The aligned drive wheels 5 and 7 are rotated via aligned drive shafts 14 and 15.

Unterschiedlich ist bei den unterschiedlichen Ausführungsformen die Anordnung bzw. Lagerung der Antriebsmotoren und der Antriebswellen. In beiden Fällen sind jeweils zwei Antriebsmotoren 8 und 9 mit zugehörigen Getrieben 8b bzw. 9b vorgesehen.The arrangement or mounting of the drive motors and the drive shafts is different in the different embodiments. In both cases, two drive motors 8 and 9 with associated gears 8b and 9b are provided.

Bei der Ausführungsform gemäß Figuren 1 und 2 sind die Antriebswellen 12 und 13 in ortsfesten Lagereinrichtungen 16 und 17 gelagert. Der Motor 9 mit einem Getriebe 9b sitzt an einem schwingenartigen Lenker 9a, der um die gemeinsame Längsachse der Antriebswellen 12 und 13 schwenkbar ist. Der Lenker 9a wird von der darin frei drehbaren Antriebswelle 14 durchsetzt.In the embodiment according to FIGS. 1 and 2, the drive shafts 12 and 13 are mounted in fixed bearing devices 16 and 17. The motor 9 with a gear 9b sits on a rocker arm 9a which is pivotable about the common longitudinal axis of the drive shafts 12 and 13. The handlebar 9a is penetrated by the drive shaft 14 which is freely rotatable therein.

Der Antriebsmotor 8 ist im Ausführungsbeispiel gemäß Figuren 1 und 2 senkrecht angeordnet und mit einem Getriebe 8b versehen. Das Getriebe 8b treibt die Antriebswellen 14 und 15 an. Das Getriebe 8b ist fest mit einem Lenker 8a verbunden, der um die Mittelachse der Antriebswellen 13 und 12 verschwenkbar ist. Hierzu durchsetzt die Antriebswelle 12 den Lenker 8a frei drehbar. Die Halterung der Antriebswellen erfolgt über die mit der Kabine 1 fest verbundenen Lagereinrichtungen 16 und 17.In the exemplary embodiment according to FIGS. 1 and 2, the drive motor 8 is arranged vertically and provided with a gear 8b. The gear 8b drives the drive shafts 14 and 15. The gear 8b is fixedly connected to a link 8a which can be pivoted about the central axis of the drive shafts 13 and 12. For this purpose, the drive shaft 12 passes freely through the handlebar 8a. The drive shafts are held via the bearing devices 16 and 17 which are firmly connected to the cabin 1.

In Figur 1 ist eine in Figur 2 nicht dargestellte Verlängerung 8c der Schwinge 8a ersichtlich. An der Verlängerung 8c greift ein Federelement 18 an, beispielsweise eine Druckfeder, insbesondere Gasdruckfeder. Das Federelement 18 erhöht den Anpreßdruck der Antriebsräder an den zugehörigen Fahrbahnprofilen.1 shows an extension 8c of the rocker 8a, which is not shown in FIG. A spring element 18, for example a compression spring, in particular a gas pressure spring, acts on the extension 8c. The spring element 18 increases the contact pressure of the drive wheels on the associated roadway profiles.

Bei der Ausführungsform gemäß Figuren 1 und 2 erhöht sich der Anpreßdruck der Antriebsräder 4 bis 6 an den zugehörigen Fahrbahnprofilen mit dem Ansteigen der Last. Diese Wirkung wird durch das Federelement 18 noch unterstützt.In the embodiment according to FIGS. 1 and 2, the contact pressure of the drive wheels 4 to 6 on the associated roadway profiles increases with the increase in the load. This effect is supported by the spring element 18.

Bei der Ausführungsform gemäß Figuren 3 und 4 sind die Antriebsmotoren 8 und 9 beide horizontal angeordnet.In the embodiment according to FIGS. 3 and 4, the drive motors 8 and 9 are both arranged horizontally.

Das Getriebe 9b ist fest mit der Fahrzeugkabine 1 verbunden. Die Antriebswellen 12 und 13 sind in gleicher Weise wie bei den Ausführungsformen gemäß Figuren 1 und 2 in fahrkorbfesten Lagern 16 und 17 gelagert.The transmission 9b is firmly connected to the vehicle cabin 1. The drive shafts 12 and 13 are mounted in the same manner as in the embodiments according to FIGS. 1 and 2 in bearings 16 and 17 fixed to the car.

Im Gegensatz zu den vorbeschriebenen Ausführungsformen sind bei der Ausführungsform gemäß Figuren 3 und 4 auch die Antriebswellen 14 und 15 in fahrkorbfesten Lagern 18 und 19 gelagert. Darüber hinaus ist das Getriebe 8b am Fahrkorb 1 fest montiert.In contrast to the previously described embodiments, in the embodiment according to FIGS. 3 and 4 the drive shafts 14 and 15 are also mounted in bearings 18 and 19 fixed to the car device. In addition, the transmission 8b is fixed to the car 1.

Claims (7)

1. Vertikalaufzug mit zwei parallel zueinander verlaufenden, vertikal angeordneten Fahrbahnprofilen (2; 3), an denen jeweils an einander gegenüberliegenden Seiten zwei Antriebsräder (4; 5; 6; 7) angepreßt werden, deren Antriebskraft zumindest im wesentlichen kraftschlüssig auf die Fahrbahnprofile übertragen wird, mit einem Antriebsmotor (8; 9) und miteinander fluchtenden, Antriebsräder tragenden Antriebswellen,
dadurch gekennzeichnet,
daß jedes Paar (4 und 5; 6 und 7) von an unterschiedlichen Fahrbahnprofilen (2; 3) ablaufenden Antriebsrädern mittels eines eigenen Antriebsmotors (9; 8; 8') gegebenenfalls über ein Getriebe (9b; 8b) angetrieben wird.1. Vertical elevator with two mutually parallel, vertically arranged lane profiles (2; 3), on each of which two drive wheels (4; 5; 6; 7) are pressed on opposite sides, the driving force of which is at least essentially non-positively transmitted to the lane profiles , with a drive motor (8; 9) and aligned drive shafts carrying drive shafts,
characterized,
that each pair (4 and 5; 6 and 7) of drive wheels running on different road profiles (2; 3) is driven by means of its own drive motor (9; 8; 8 '), possibly via a gear (9b; 8b). 2. Vertikalaufzug nach Anspruch 1,
dadurch gekennzeichnet,
daß die miteinander fluchtenden Antriebswellen (12; 13) lediglich eines Paares von miteinander fluchtenden Antriebsrädern (4; 6) am Aufzug ortsfest und drehbar gelagert sind, während das zweite Paar von miteinander fluchtenden Antriebswellen (14; 15) in Lenkern (8a; 9a) drehbar geführt ist, die um die gemeinsame Drehachse des ersten Paares von Antriebsrädern (4; 6) verschwenkbar sind.2. Vertical elevator according to claim 1,
characterized,
that the mutually aligned drive shafts (12; 13) of only one pair of mutually aligned drive wheels (4; 6) are mounted in a stationary and rotatable manner on the elevator, while the second pair of mutually aligned drive shafts (14; 15) are mounted in links (8a; 9a) is rotatably guided, which are pivotable about the common axis of rotation of the first pair of drive wheels (4; 6). 3. Vertikalaufzug nach Anspruch 2,
dadurch gekennzeichnet,
daß an mindestens einem Lenker (8a; 9a) ein Antriebsmotor (8; 8'; 9) gegebenenfalls mit Getriebe (8b; 9b) befestigt ist.3. Vertical elevator according to claim 2,
characterized,
that a drive motor (8; 8 '; 9), optionally with a gear (8b; 9b), is attached to at least one link (8a; 9a). 4. Vertikalaufzug nach Anspruch 3,
dadurch gekennzeichnet,
daß mindestens ein Lenker (8a; 8c) über Federkraft zur Erhöhung der Anpreßkraft der Antriebsräder mittels eines Federelements (18) vorgespannt ist.4. Vertical elevator according to claim 3,
characterized,
that at least one link (8a; 8c) is spring-biased to increase the contact pressure of the drive wheels by means of a spring element (18). 5. Vertikalaufzug nach Anspruch 4,
dadurch gekennzeichnet,
daß das Federelement (18) an einem Hebelarm (8c) angreift, der einen Lenker (8a) über den Abstand parallel angeordneter Antriebswellen hinaus vergrößert.5. Vertical elevator according to claim 4,
characterized,
that the spring element (18) engages on a lever arm (8c) which enlarges a link (8a) beyond the distance of parallel drive shafts. 6. Vertikalaufzug nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß an zwei Lenkern (8a; 9a) unterschiedliche Antriebsmotoren (8; 9) gegebenenfalls mit Getriebe (8b; 9b) für die unterschiedlichen Paare von Antriebsrädern befestigt sind.6. Vertical elevator according to one or more of claims 1 to 5, characterized in
that different drive motors (8; 9), optionally with gears (8b; 9b) for the different pairs of drive wheels, are attached to two links (8a; 9a). 7. Vertikalaufzug nach einem oder mehreren der Ansprüche 1 bis 6,
dadurch gekennzeichnet,
daß das Getriebe (9b; 8b) ein Schneckengetriebe ist.7. Vertical elevator according to one or more of claims 1 to 6,
characterized,
that the gear (9b; 8b) is a worm gear.
EP95106053A 1994-05-27 1995-04-22 Vertical lift Expired - Lifetime EP0684204B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4418480A DE4418480A1 (en) 1994-05-27 1994-05-27 Vertical elevator
DE4418480 1994-05-27

Publications (3)

Publication Number Publication Date
EP0684204A2 true EP0684204A2 (en) 1995-11-29
EP0684204A3 EP0684204A3 (en) 1996-05-29
EP0684204B1 EP0684204B1 (en) 1999-05-26

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EP95106053A Expired - Lifetime EP0684204B1 (en) 1994-05-27 1995-04-22 Vertical lift

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DE (2) DE4418480A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043298B4 (en) * 2004-09-08 2007-07-19 HIRO LIFT Hillenkötter + Ronsieck GmbH Drive on a cabin for vertical lifts
EP1860051A1 (en) * 2006-05-24 2007-11-28 Inventio Ag Elevator with Frictional Drive
EP2014598A1 (en) * 2007-06-23 2009-01-14 HIRO LIFT HILLENKÖTTER + RONSIECK GmbH Drive for vertical lifts
CN101077751B (en) * 2006-05-24 2010-09-22 因温特奥股份公司 Elevator with frictional drive
US20220033226A1 (en) * 2020-07-30 2022-02-03 Otis Elevator Company Autonomous elevator car movers and traction surfaces therefor, configured with traction increasing and guidance enhancing implements
EP3978417A1 (en) * 2020-10-02 2022-04-06 Otis Elevator Company Ropeless elevator wheel force releasing system
EP4008671A1 (en) * 2020-12-04 2022-06-08 Otis Elevator Company Method and apparatus for releasing normal force applied on wheels of a ropeless elevator car propulsion system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719496C2 (en) * 1997-05-07 2003-04-03 Alho Systembau Gmbh Modular system house with elevator
DE10140390B4 (en) * 2001-08-23 2005-12-01 HIRO LIFT Hillenkötter + Ronsieck GmbH vertical lift

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR933675A (en) * 1946-01-22 1948-04-28 New method of lifting elevators by direct traction without cables
DE3523187A1 (en) * 1985-06-28 1987-01-08 Rainer Boll Lift in buildings
EP0330809A1 (en) * 1988-03-03 1989-09-06 Schaffer, Dagmar Lift without machine room

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR933675A (en) * 1946-01-22 1948-04-28 New method of lifting elevators by direct traction without cables
DE3523187A1 (en) * 1985-06-28 1987-01-08 Rainer Boll Lift in buildings
EP0330809A1 (en) * 1988-03-03 1989-09-06 Schaffer, Dagmar Lift without machine room

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043298B4 (en) * 2004-09-08 2007-07-19 HIRO LIFT Hillenkötter + Ronsieck GmbH Drive on a cabin for vertical lifts
CN100497148C (en) * 2004-09-08 2009-06-10 Hiro电梯希伦可特+龙西克有限公司 Driving device on cage of vertical elevator
EP1860051A1 (en) * 2006-05-24 2007-11-28 Inventio Ag Elevator with Frictional Drive
CN101077751B (en) * 2006-05-24 2010-09-22 因温特奥股份公司 Elevator with frictional drive
US8235178B2 (en) 2006-05-24 2012-08-07 Inventio Ag Elevator with frictional drive
EP2014598A1 (en) * 2007-06-23 2009-01-14 HIRO LIFT HILLENKÖTTER + RONSIECK GmbH Drive for vertical lifts
US20220033226A1 (en) * 2020-07-30 2022-02-03 Otis Elevator Company Autonomous elevator car movers and traction surfaces therefor, configured with traction increasing and guidance enhancing implements
US11584621B2 (en) * 2020-07-30 2023-02-21 Otis Elevator Company Autonomous elevator car movers and traction surfaces therefor, configured with traction increasing and guidance enhancing implements
EP3978417A1 (en) * 2020-10-02 2022-04-06 Otis Elevator Company Ropeless elevator wheel force releasing system
EP4008671A1 (en) * 2020-12-04 2022-06-08 Otis Elevator Company Method and apparatus for releasing normal force applied on wheels of a ropeless elevator car propulsion system

Also Published As

Publication number Publication date
DE4418480A1 (en) 1995-11-30
DE59506000D1 (en) 1999-07-01
EP0684204A3 (en) 1996-05-29
EP0684204B1 (en) 1999-05-26

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