EP1338546B1 - Machine frame with deflecting roller support for elevator machine - Google Patents

Machine frame with deflecting roller support for elevator machine Download PDF

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Publication number
EP1338546B1
EP1338546B1 EP20030002871 EP03002871A EP1338546B1 EP 1338546 B1 EP1338546 B1 EP 1338546B1 EP 20030002871 EP20030002871 EP 20030002871 EP 03002871 A EP03002871 A EP 03002871A EP 1338546 B1 EP1338546 B1 EP 1338546B1
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EP
European Patent Office
Prior art keywords
counter
roller
support
machine frame
bores
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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 - Fee Related
Application number
EP20030002871
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German (de)
French (fr)
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EP1338546A1 (en
Inventor
Andrzej Masch.-Ing. Cholinski
Heinrich Masch.-Ing. Küttel
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Inventio AG
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Inventio AG
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Classifications

    • 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

Definitions

  • the invention relates to a machine frame with counter-roller carrier for an elevator drive, which is feasible with the arranged on the machine frame carrier elements and counter-roller counter-roller carrier the required cable length between an elevator car and a counterweight, and for two-sided carrying the counter-roller identical support elements are provided by means of which carrier elements different Seilstrangabplace are feasible.
  • a reciprocating motor fed with alternating voltage consists essentially of a stator and of a rotor with a rotor hub which can be pushed onto the main shaft.
  • a second clamping set creates a firm connection between the main shaft and the rotor hub.
  • On the bearing block and the Schildbock bearing machine frame and a counter-roller carrier is arranged with a counter-roller, which serves to comply with the predetermined by the dimensions of the elevator car and the counterweight and the cable guide wire rope distance.
  • a disadvantage of the known device is that with the counter-roller carrier and the arrangement of the counter-roller of the cable strand spacing is fixed. Different carrier elements are necessary for different cable line spacings. The holes must be drilled according to the order and layout of the lift. The variant variety results in high production costs.
  • Another disadvantage is that the Jacobrollenanbau must be made from below in the hard to reach area of the concrete foundations.
  • a disadvantage of this adjustment of the counter-roller is the predetermined by the long slots undefined position of the counter-roller per bearing plate. For each adjustment via the long slots, the counter roller must be realigned.
  • the invention aims to remedy this situation.
  • the invention as characterized in claim 1 solves the problem of avoiding the disadvantages of the known device and to provide a machine frame in which the counter-roller carrier can be attached at will.
  • Fig. 1 shows the ready assembled drive unit, consisting essentially of a motor 1, serving as a bearing plate motor stand 2, serving as a bearing plate bearing block 5, a traction sheave 15 and a machine frame 7 with counter-roller carrier 9.
  • the stator of the electric motor 1 by means of a flange with the Motor stand 2 screwed.
  • the rotor of the electric motor 1 is seated on a free end of a shaft carrying the traction sheave 15, not shown, which is mounted on the bearing block 5 and the motor stator 2.
  • the free end of the shaft projects beyond the motor stand 2.
  • the traction sheave 15, which is visible through an outbreak in a cable protection shuttering 3, is mounted on the motor stand 2 and on the bearing block 5 by means of the shaft.
  • a brake 6 is arranged in the inner region of the motor stator 2 and covered with the shuttering 3. Depending on the structure of the drive unit, the brake 6 can also be arranged in the inner region of the bearing block 5.
  • the motor stand 2 and the bearing block 5 are arranged on the machine frame 7, which has an adjustable support element 8 at its corners.
  • the counter-roller carrier 9 is arranged on the underside of the machine frame 7. All electrical connections of the drive unit are located in a terminal box 10th
  • Fig. 2a The structural design of the arranged on the machine frame counter-roller carrier 9 is in the Fig. 2a to 2c explained in more detail, wherein in Fig. 2a an assembled and in Fig. 2b an exploded view of the assembly can be seen. Fig. 2c shows details of arranged on the machine frame counter roller carrier. 9
  • the counter-roller carrier 9 consists essentially of each side of the counter-roller a support member 33, a counter-roller 30 and a casing 34.
  • the counter-roller 30 is arranged with its axis 32 on both sides in the receiving bores 33.7 of the support members 33 and secured by shaft securing rings 35 in the axial direction.
  • One of the lubrication of the axis 32 serving extension is designated 32.1.
  • Per carrier element 33, a further receiving bore 33.8 is provided.
  • the support elements 33 are identical for the left and the right side of the counter-roller 30.
  • a support element 33 consists of a plate 33.3 and at least one head strip 33.5, wherein ribs 33.6 are provided for reinforcement.
  • the head strip 33.5 has a contact surface 33.1 and a number of two-step bores 33.2, which serve to fasten the counter roller carrier 9 on the underside of the machine frame 7.
  • the upper part 33.21 of the bore 33.2 is cylindrical and the lower part 33.22 is threaded Mistake.
  • the machine frame 7 has at the bottom a number of cylindrical holes 7.1. Screws 36 with washers 37 serve to connect the carrier elements 33 to the machine frame 7.
  • Clamping sleeves 38 are arranged both in the cylindrical part 33.21 of the bore 33.2 and in the bore 7.1 and absorb shear forces.
  • the number of bores 33.2 and 7.1 is selected so that the counter-roller carrier 9 can be fastened in different positions, depending on the required cable-strand spacing between an elevator car and a counterweight.
  • a shuttering 34 serves as protection against contact and prevents the jumping out of ropes of the counter-roller 30.
  • a number of two-stage bores 33.2 are arranged on the head strip 33.5, wherein the spacing of the bores 33.2 determines the adjustment grid for the counter-roller carrier 9.
  • the adjustment grid can be refined with at least one further bore 7.1 of the machine frame 7.
  • the machine frame can also be provided with a number of holes 7.1 so that a right-wing projection of the counter-roller carrier 9 or the counter-roller 30 is possible.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Description

Die Erfindung betrifft einen Maschinenrahmen mit Gegenrollenträger für einen Aufzugsantrieb, wobei mit dem aus am Maschinenrahmen angeordneten Trägerelementen und Gegenrolle bestehenden Gegenrollenträger der erforderliche Seilstrangabstand zwischen einer Aufzugskabine und einem Gegengewicht machbar ist, und zum beidseitigen Tragen der Gegenrolle identische Trägerelemente vorgesehen sind, mittels welchen Trägerelementen unterschiedliche Seilstrangabstände machbar sind.The invention relates to a machine frame with counter-roller carrier for an elevator drive, which is feasible with the arranged on the machine frame carrier elements and counter-roller counter-roller carrier the required cable length between an elevator car and a counterweight, and for two-sided carrying the counter-roller identical support elements are provided by means of which carrier elements different Seilstrangabstände are feasible.

Aus der Patentschrift EP 0 468 168 B1 ist eine getriebelose Antriebsmaschine für Aufzüge bekannt geworden, bei der ein Maschinenrahmen einen Lagerbock und einen Schildbock trägt. Eine Hauptwelle ist mittels eines am Lagerbock angeordneten Loslagers und mittels eines am Schildbock angeordneten Festlagers abtriebsseitig an zwei Stellen gelagert. Zwischen den Lagerstellen ist eine Treibscheibe mit Bremsscheibe vorgesehen. Die Treibscheibe steht mittels eines ersten Spannsatzes in fester Verbindung mit der Hauptwelle. Die beidseitige Lagerung der Treibscheibe erlaubt bei kleinen Deformationen der Hauptwelle grosse Radiallasten. Ein mit Wechselspannung gespeister Hubmotor besteht im wesentlichen aus einem Stator und aus einem Rotor mit einer auf die Hauptwelle aufschiebbaren Rotornabe. Am antriebsseitigen Ende der Hauptwelle schafft ein zweiter Spannsatz eine feste Verbindung zwischen der Hauptwelle und der Rotornabe. Am den Lagerbock und den Schildbock tragenden Maschinenrahmen ist auch ein Gegenrollenträger mit einer Gegenrolle angeordnet, die dazu dient, den durch die Abmessungen der Aufzugskabine und des Gegengewichtes sowie der Seilführung vorgegebenen Seilstrangabstand einzuhalten.From the Patent EP 0 468 168 B1 has become known a gearless drive machine for elevators, in which a machine frame carries a bearing block and a Schildbock. A main shaft is mounted on the output side at two points by means of a bearing mounted on the bearing block and by means of a arranged on the Schildbock fixed bearing. Between the bearings a traction sheave with brake disc is provided. The traction sheave is fixedly connected to the main shaft by means of a first clamping set. The two-sided storage of the traction sheave allows large radial loads with small deformations of the main shaft. A reciprocating motor fed with alternating voltage consists essentially of a stator and of a rotor with a rotor hub which can be pushed onto the main shaft. At the drive end of the main shaft, a second clamping set creates a firm connection between the main shaft and the rotor hub. On the bearing block and the Schildbock bearing machine frame and a counter-roller carrier is arranged with a counter-roller, which serves to comply with the predetermined by the dimensions of the elevator car and the counterweight and the cable guide wire rope distance.

Ein Nachteil der bekannten Einrichtung liegt darin, dass mit dem Gegenrollenträger und der Anordnung der Gegenrolle der Seilstrangabstand fest vorgegebenen ist. Für unterschiedliche Seilstrangabstände sind unterschiedliche Trägerelemente notwendig. Die Bohrlöcher müssen je nach Auftrag und Auslegung des Aufzuges gebohrt werden. Die Variantenvielfalt hat hohe Herstellungskosten zur Folge. Weiter nachteilig ist, dass der Gegenrollenanbau von unten im schwer zugänglichen Bereich der Betonfundamente vorgenommen werden muss.A disadvantage of the known device is that with the counter-roller carrier and the arrangement of the counter-roller of the cable strand spacing is fixed. Different carrier elements are necessary for different cable line spacings. The holes must be drilled according to the order and layout of the lift. The variant variety results in high production costs. Another disadvantage is that the Gegenrollenanbau must be made from below in the hard to reach area of the concrete foundations.

Aus der Patentschrift US 5 957 242 ist ein Maschinenrahmen mit zwei Seitenholmen bekannt geworden, der an seinen Enden Stützarme aufweist, welche in halbrunden Auflagern schwenkbar gelagert sind. Die Auflager können auf unterschiedlich hohen Sockeln angeordnet werden, was für den Maschinenrahmen unterschiedliche Schräglagen und dadurch variable Umschlingungswinkel an der Treibscheibe und unterschiedliche Seilstrangabstände ergibt. Ausserdem ist die Gegenrolle in lateral verschiebbaren Lagerschildern gelagert. Die veränderbare Lage der Gegenrolle hat ebenfalls Auswirkung auf den Umschlingungswinkel und den Seilstrangabstand.From the US Pat. No. 5,957,242 is a machine frame with two side rails became known, which has at its ends support arms, which are pivotally mounted in semicircular supports. The supports can be arranged on different heights of pedestals, which results in different inclinations for the machine frame and thus variable wrap angles on the traction sheave and different cable string spacings. In addition, the counter-roller is mounted in laterally displaceable bearing plates. The changeable position of the counter roller also has an effect on the wrap angle and the cable strand spacing.

Nachteilig bei dieser Verstellmöglichkeit der Gegenrolle ist die durch die Langschlitze vorgegebene undefinierte Lage der Gegenrolle je Lagerschild. Bei jeder Verstellung über die Langschlitze muss die Gegenrolle neu ausgerichtet werden.A disadvantage of this adjustment of the counter-roller is the predetermined by the long slots undefined position of the counter-roller per bearing plate. For each adjustment via the long slots, the counter roller must be realigned.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in Anspruch 1 gekennzeichnet ist, löst die Aufgabe, die Nachteile der bekannten Einrichtung zu vermeiden und einen Maschinenrahmen zu schaffen, bei dem der Gegenrollenträger nach Wahl anbringbar ist.The invention aims to remedy this situation. The invention, as characterized in claim 1 solves the problem of avoiding the disadvantages of the known device and to provide a machine frame in which the counter-roller carrier can be attached at will.

Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass lediglich eine Variante von Trägerelementen notwendig ist. Mit dem Einheitsträgerelement können grössere und somit kostengünstigere Stückzahlen hergestellt werden. Mit dem erfindungsgemässen Trägerelement können unterschiedliche Seilstrangabstände realisiert werden. Auftragsabhängige Arbeiten entfallen dadurch. Ausserdem kann der Gegenrollenanbau gut zugänglich von oben ausgeführt werden. Die für die Sicherheit des Aufzuges wichtigen Befestigungsschrauben sind jederzeit kontrollierbar.The advantages achieved by the invention are to be seen essentially in the fact that only a variant of carrier elements is necessary. With the unit support element larger and thus more cost-effective quantities can be produced. With the support element according to the invention, different cable strand spacings can be realized. Job-dependent jobs are eliminated. In addition, the counter roller attachment can be easily accessed from above. The fastening screws important for the safety of the lift can be checked at any time.

Anhand der beiliegenden Figuren wird die vorliegende Erfindung näher erläutert.Reference to the accompanying figures, the present invention will be explained in more detail.

Es zeigen:

  • Fig. 1
    eine Antriebseinheit mit einem Gegenrollenträger,
  • Fig. 2a
    der an einem Maschinenrahmen angeordnete Gegenrollenträger,
  • Fig. 2b
    eine explodierte Darstellung der Fig. 2a und
  • Fig. 2c
    Einzelheiten des Gegenrollenträgers.
Show it:
  • Fig. 1
    a drive unit with a counter-roller carrier,
  • Fig. 2a
    the counter-roller carrier arranged on a machine frame,
  • Fig. 2b
    an exploded view of the Fig. 2a and
  • Fig. 2c
    Details of the counter roller carrier.

Fig. 1 zeigt die fertig zusammengebaute Antriebseinheit, im wesentlichen bestehend aus einem Motor 1, einem als Lagerschild dienender Motorständer 2, einem als Lagerschild dienender Lagerbock 5, einer Treibscheibe 15 und einem Maschinenrahmen 7 mit Gegenrollenträger 9. Der Stator des Elektromotors 1 ist mittels eines Flansches mit dem Motorständer 2 verschraubt. Der Rotor des Elektromotors 1 sitzt auf einem freien Ende einer die Treibscheibe 15 tragenden, nicht dargestellten Welle, die am Lagerbock 5 und am Motorständer 2 gelagert ist. Das freie Wellenende überragt den Motorständer 2. Die durch einen Ausbruch in einer Seilschutzverschalung 3 sichtbare Treibscheibe 15 ist mittels der Welle am Motorständer 2 und am Lagerbock 5 gelagert. Eine Bremse 6 ist im inneren Bereich des Motorständers 2 angeordnet und mit der Verschalung 3 abgedeckt. Je nach Aufbau der Antriebseinheit kann die Bremse 6 auch im inneren Bereich des Lagerbockes 5 angeordnet sein. Fig. 1 shows the ready assembled drive unit, consisting essentially of a motor 1, serving as a bearing plate motor stand 2, serving as a bearing plate bearing block 5, a traction sheave 15 and a machine frame 7 with counter-roller carrier 9. The stator of the electric motor 1 by means of a flange with the Motor stand 2 screwed. The rotor of the electric motor 1 is seated on a free end of a shaft carrying the traction sheave 15, not shown, which is mounted on the bearing block 5 and the motor stator 2. The free end of the shaft projects beyond the motor stand 2. The traction sheave 15, which is visible through an outbreak in a cable protection shuttering 3, is mounted on the motor stand 2 and on the bearing block 5 by means of the shaft. A brake 6 is arranged in the inner region of the motor stator 2 and covered with the shuttering 3. Depending on the structure of the drive unit, the brake 6 can also be arranged in the inner region of the bearing block 5.

Der Motorständer 2 und der Lagerbock 5 sind am Maschinenrahmen 7 angeordnet, welcher an seinen Ecken je ein einstellbares Stützelement 8 aufweist. Der Gegenrollenträger 9 ist an der Unterseite des Maschinenrahmens 7 angeordnet. Alle elektrischen Anschlüsse der Antriebseinheit befinden sich in einem Klemmenkasten 10.The motor stand 2 and the bearing block 5 are arranged on the machine frame 7, which has an adjustable support element 8 at its corners. The counter-roller carrier 9 is arranged on the underside of the machine frame 7. All electrical connections of the drive unit are located in a terminal box 10th

Der konstruktive Aufbau des am Maschinenrahmen angeordneten Gegenrollenträgers 9 ist in den Fig. 2a bis 2c näher erläutert, wobei in Fig. 2a eine zusammengebaute und in Fig. 2b eine explodierte Darstellung der Baugruppe zu sehen ist. Fig. 2c zeigt Einzelheiten des am Maschinenrahmen angeordneten Gegenrollenträgers 9.The structural design of the arranged on the machine frame counter-roller carrier 9 is in the Fig. 2a to 2c explained in more detail, wherein in Fig. 2a an assembled and in Fig. 2b an exploded view of the assembly can be seen. Fig. 2c shows details of arranged on the machine frame counter roller carrier. 9

Der Gegenrollenträger 9 besteht im wesentlichen aus je Seite der Gegenrolle einem Trägerelement 33, einer Gegenrolle 30 und einer Verschalung 34. Die Gegenrolle 30 ist mit ihrer Achse 32 beidseitig in den Aufnahmebohrungen 33.7 der Trägerelemente 33 angeordnet und mittels Wellensicherungsringe 35 in axialer Richtung gesichert. Eine der Schmierung der Achse 32 dienende Verlängerung ist mit 32.1 bezeichnet. Je Trägerelement 33 ist eine weitere Aufnahmebohrung 33.8 vorgesehen. Die Trägerelemente 33 sind identisch für die linke und die rechte Seite der Gegenrolle 30. Ein Trägerelement 33 besteht aus einer Platte 33.3 und aus mindestens einer Kopfleiste 33.5, wobei Rippen 33.6 zur Verstärkung vorgesehen sind. Die Kopfleiste 33.5 weist eine Kontaktfläche 33.1 und eine Anzahl von zweistufigen Bohrungen 33.2 auf, die der Befestigung des Gegenrollenträgers 9 an der Unterseite des Maschinenrahmens 7 dienen. Der obere Teil 33.21 der Bohrung 33.2 ist zylindrisch und der untere Teil 33.22 ist mit einem Gewinde versehen. Der Maschinenrahmen 7 hat an der Unterseite eine Anzahl von zylindrischen Bohrungen 7.1. Schrauben 36 mit Unterlagscheiben 37 dienen der Verbindung der Trägerelemente 33 mit dem Maschinenrahmen 7. Spannhülsen 38 sind sowohl im zylindrischen Teil 33.21 der Bohrung 33.2 als auch in der Bohrung 7.1 angeordnet und nehmen Scherkräfte auf. Die Anzahl der Bohrungen 33.2 und 7.1 ist so gewählt, dass der Gegenrollenträger 9 in unterschiedlichen Positionen je nach erforderlichem Seilstrangabstand zwischen einer Aufzugskabine und einem Gegengewicht befestigbar ist. Eine Verschalung 34 dient als Berührungsschutz und verhindert das Ausspringen von Seilen der Gegenrolle 30.The counter-roller carrier 9 consists essentially of each side of the counter-roller a support member 33, a counter-roller 30 and a casing 34. The counter-roller 30 is arranged with its axis 32 on both sides in the receiving bores 33.7 of the support members 33 and secured by shaft securing rings 35 in the axial direction. One of the lubrication of the axis 32 serving extension is designated 32.1. Per carrier element 33, a further receiving bore 33.8 is provided. The support elements 33 are identical for the left and the right side of the counter-roller 30. A support element 33 consists of a plate 33.3 and at least one head strip 33.5, wherein ribs 33.6 are provided for reinforcement. The head strip 33.5 has a contact surface 33.1 and a number of two-step bores 33.2, which serve to fasten the counter roller carrier 9 on the underside of the machine frame 7. The upper part 33.21 of the bore 33.2 is cylindrical and the lower part 33.22 is threaded Mistake. The machine frame 7 has at the bottom a number of cylindrical holes 7.1. Screws 36 with washers 37 serve to connect the carrier elements 33 to the machine frame 7. Clamping sleeves 38 are arranged both in the cylindrical part 33.21 of the bore 33.2 and in the bore 7.1 and absorb shear forces. The number of bores 33.2 and 7.1 is selected so that the counter-roller carrier 9 can be fastened in different positions, depending on the required cable-strand spacing between an elevator car and a counterweight. A shuttering 34 serves as protection against contact and prevents the jumping out of ropes of the counter-roller 30.

Wie aus Fig. 2c ersichtlich sind an der Kopfleiste 33.5 eine Anzahl von zweistufigen Bohrungen 33.2 angeordnet, wobei der Abstand der Bohrungen 33.2 das Verstellraster für den Gegenrollenträger 9 bestimmt. Das Verstellraster kann mit mindestens einer weiteren Bohrung 7.1 des Maschinerahmens 7 verfeinert werden.How out Fig. 2c a number of two-stage bores 33.2 are arranged on the head strip 33.5, wherein the spacing of the bores 33.2 determines the adjustment grid for the counter-roller carrier 9. The adjustment grid can be refined with at least one further bore 7.1 of the machine frame 7.

Das Ausführungsbeispiel zeigt eine Linksausladung des Gegegenrollenträgers 9 bzw. der Gegenrolle 30. Der Maschinenrahmen kann auch mit einer Anzahl von Bohrungen 7.1 so versehen sein, dass eine Rechtsausladung des Gegenrollenträgers 9 bzw. der Gegegenrolle 30 möglich ist.The machine frame can also be provided with a number of holes 7.1 so that a right-wing projection of the counter-roller carrier 9 or the counter-roller 30 is possible.

Claims (4)

  1. Engine frame (7) with counter-roller support (9) for an elevator drive, wherein the requisite cable run spacing between an elevator car and a counterweight is possible by the counter-roller support (9) consisting of support elements (33), which are arranged at the engine frame (7), and counter roller (30), and identical support elements (33) are provided for support of the counter roller (30) at both sides, by means of which support elements (33) different cable run spacings are possible, characterised in that the support element (33) comprises a plate (33.3) and at least one head strip (33.5) with a number of bores (33.2), wherein ribs (33.6) for reinforcing the plate (33.3) are provided and the bores (33.2) serve for fastening the counter-roller support (9) at the underside of the engine frame (7).
  2. Drive unit according to claim 1, characterised in that the bores (33.2) are two-stage, wherein an upper part (33.21) of the bore (33.2) is cylindrical and a lower part (33.22) is provided with a thread.
  3. Drive unit according to one of claims 1 and 2, characterised in that the spacing of the bores (33.2) is provided as an adjustment grid for the counter-roller support (9), wherein the adjustment grid can be refined by at least one further bore (7.1) of the engine frame (7).
  4. Drive unit according to one of the preceding claims, characterised in that a clamping sleeve (38), which accepts shear forces, is provided for the cylindrical part (33.21) of the bore (33.2) and for the bore (7.1) of the engine frame (7).
EP20030002871 2002-02-18 2003-02-08 Machine frame with deflecting roller support for elevator machine Expired - Fee Related EP1338546B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030002871 EP1338546B1 (en) 2002-02-18 2003-02-08 Machine frame with deflecting roller support for elevator machine

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02405121 2002-02-18
EP02405121 2002-02-18
EP20030002871 EP1338546B1 (en) 2002-02-18 2003-02-08 Machine frame with deflecting roller support for elevator machine

Publications (2)

Publication Number Publication Date
EP1338546A1 EP1338546A1 (en) 2003-08-27
EP1338546B1 true EP1338546B1 (en) 2008-10-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103562113B (en) 2011-05-31 2016-03-16 因温特奥股份公司 The driver framework of lifter apparatus
US11517048B2 (en) 2017-05-10 2022-12-06 Philip Morris Products S.A. Aerosol-generating article, device and system with optimized substrate usage

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0761744A (en) * 1993-08-18 1995-03-07 Otis Elevator Co Hoist type elevator
EP0763495A1 (en) * 1995-09-15 1997-03-19 Inventio Ag Machine frame

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