EP0078874B1 - Hoist for a passenger or goods elevator - Google Patents

Hoist for a passenger or goods elevator Download PDF

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Publication number
EP0078874B1
EP0078874B1 EP82103326A EP82103326A EP0078874B1 EP 0078874 B1 EP0078874 B1 EP 0078874B1 EP 82103326 A EP82103326 A EP 82103326A EP 82103326 A EP82103326 A EP 82103326A EP 0078874 B1 EP0078874 B1 EP 0078874B1
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EP
European Patent Office
Prior art keywords
winch
housing
lid
drum
accordance
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Expired
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EP82103326A
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German (de)
French (fr)
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EP0078874A2 (en
EP0078874A3 (en
Inventor
Giovanni Frasca
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SICOR SpA
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SICOR SpA
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Publication of EP0078874A2 publication Critical patent/EP0078874A2/en
Publication of EP0078874A3 publication Critical patent/EP0078874A3/en
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Publication of EP0078874B1 publication Critical patent/EP0078874B1/en
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details

Definitions

  • the invention relates to a winch for a passenger or goods elevator with a braking device and a housing for the reduction gear, in which a worm and a worm wheel meshing therewith are mounted, the worm shaft from the housing for the purpose of fastening the rotor of an electric motor, its stator is flanged to the gear housing, and protrudes a cooling impeller and a brake drum, against the lateral surface of which the brake shoes of the braking device, which are actuated by an electromagnet, can be placed.
  • the elevator car of a passenger or freight elevator is actuated by a winch, which is usually arranged at the upper end of the elevator shaft and essentially consists of a reduction gear with worm and worm wheel.
  • the worm and worm wheel are stored in a gear housing filled with oil.
  • the slow-running worm wheel shaft of the transmission is connected to a rope pulley or traction sheave over which the cables carrying the car run, while the fast-running worm shaft is almost always in a drive connection with an electric motor designed as a three-phase motor.
  • the winch is also equipped with a braking device, which usually has two brake shoes provided with brake pad materials, which are held in the open position by means of electromagnets against spring forces, so that the brake responds automatically in the event of a power failure and stops the elevator.
  • a winch for a passenger or goods elevator of the type mentioned at the outset is already known, in which a cooling impeller and the brake drum are attached to the worm shaft projecting from the gear housing.
  • the electric motor and the braking device are designed as a structural unit which is flanged onto the end face of the gear housing.
  • the motor housing serves as a brake shoe carrier, each brake shoe being pivotable about a pin which is fastened to the motor housing, and the electromagnet for actuating the brake shoes is also fixed on the housing of the electric motor.
  • the brake shoes act on the jacket of a cylindrical drum of the cooling impeller, which is mounted directly on the free end of the worm shaft. When the worm shaft rotates rapidly, a forced air flow is generated which runs through the electric motor and exits radially outwards at its free end.
  • the known winch has several disadvantages.
  • the manufacturer of elevator winches is bound to purchase the electric motor and braking device from one and the same manufacturer, since both devices can only be obtained as a structural unit and are structurally coordinated with one another. This considerably restricts competition.
  • the flange connection prescribed in a certain way between the electric motor and the gearbox housing also defines the position of the braking device, since this is structurally connected to the electric motor as a structural unit.
  • This has the disadvantage that a larger space is required, so that the gearbox may not be able to be used in circumstances where space is limited or can only be assembled with considerable effort.
  • the type of air flow is not particularly effective because of the air flow emerging at the free end of the electric motor in the radial direction, so that large blade cross sections must be used.
  • the invention has for its object to improve a winch of the type mentioned in such a way that the winch construction is simplified and cheaper, requires less maintenance and is easier to assemble even in small spaces. At the same time, the effectiveness of forced ventilation is to be improved.
  • the three-phase motor serving as the drive and the braking device are designed as separate components from one another. While the three-phase motor is flanged to the end face of the gear housing in a manner known per se, the entire braking device is carried by a cover which is flanged onto the free end face of the motor housing. The cover can be rotated and installed in any angular position with respect to the motor housing, so that the space available in the space arranged at the upper end of the elevator shaft can be optimally used and installation is thus made considerably easier.
  • the entire braking device can be preassembled on the cover and manufactured as a structural unit by a company that is independent of the motor company, so that the competition is opened.
  • the cover has a centrally arranged bearing flange, which is used to hold an auxiliary bearing for the worm shaft end, so that the worm shaft is mounted in triplicate.
  • the auxiliary bearing is located in the immediate vicinity of the brake drum, which is fixed on the conical worm shaft end, so that an almost vibration-free mounting of the shaft end is guaranteed even during braking operation, in which the brake shoes mounted on the cover rest against the drum shell.
  • the cooling impeller which is fixed on the hub of the brake drum, is located in the space circumscribed by the brake drum and the cover.
  • the cooling impeller forces the electric motor and the gearbox housing to be ventilated by venting the air Slits in the area of the flange between the gearbox and the electric motor, are sucked through the rotor and the openings in the cover and are then directed at an acute angle to the outer surface of the cover to the gearbox housing in order to flow around it.
  • This air flow in which the exiting air flow is returned to the housing and flows around the outer surface of the housing, considerably improves the effectiveness of the cooling.
  • the construction according to the invention is therefore extremely easy to maintain, since the brake unit is carried on a cover which is independent of the three-phase motor.
  • This cover can be arranged at any angle to the motor housing, so that the space can be optimally used and installation is made easier. Since the motor and braking device are structurally independent assemblies, the winch manufacturer is no longer bound to the same motor manufacturer, but the braking devices can be combined with any motor. This will open the competition.
  • the braking device can be preassembled so that the assembly work is reduced in the restricted space in the machine room of the elevator shaft.
  • the winch according to the invention is designated by reference number 1.
  • the winch 1 comprises a worm 2 and a worm wheel 3 meshing therewith, the worm and worm wheel being arranged in an oil-filled gear housing 4. It can be seen in particular that the worm 2 is fastened to the high-speed shaft 5 of the reduction gear, which in turn has a front end 6 in the front wall of the gear housing 4 by means of a bearing 7 and in the rear wall 8 by a bearing 9 Fuse 10 is added.
  • the housing of the three-phase motor 12 is provided with flanges, the flange 13 on the right in relation to the figure being used for attachment to the gear housing 4, while the left flange 14 can be connected to the flange 15 of the cover 16.
  • the flange 15 of the cover 16 is designed to be rotationally symmetrical, so that the entire braking device 17 can be mounted in any angular position relative to the housing of the three-phase motor 12 and the space available can thereby be optimally utilized.
  • the cover 16 is drum-shaped and has a central bearing flange 18 which serves to receive an auxiliary bearing 19. There are openings 20 in the lid base, the purpose of which will be explained later.
  • the cover 16 has bearing eyes 21 at its upper end, in each of which a brake shoe 23 is pivotably mounted by means of a bearing pin 22. Only one brake shoe is shown in the drawing. The two brake shoes are pulled together in a manner known per se by spring forces, so that their brake pads lie against the jacket of the brake drum 24 when the electromagnet 25 is de-energized.
  • the brake drum 24 is fixed with its hub 26 on the conical end of the worm shaft 5.
  • the cooling impeller 27 is fixed on the hub.

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

Description

Die Erfindung betrifft eine Winde für einen Personen- oder Lastenaufzug mit einer Bremsvorrichtung und einem Gehäuse für das Untersetzungsgetriebe, in welchem eine Schnecke und ein damit kämmendes Schneckenrad gelagert sind, wobei die Schnekkenwelle aus dem Gehäuse zum Zwecke der Befestigung des Rotors eines Elektromotors, dessen Stator an das Getriebegehäuse angeflanscht ist, sowie eines Kühlflügelrades und einer Bremstrommel herausragt, gegen deren Mantelfläche die durch einen Elektromagneten betätigten Bremsbacken der Bremsvorrichtung anlegbar sind.The invention relates to a winch for a passenger or goods elevator with a braking device and a housing for the reduction gear, in which a worm and a worm wheel meshing therewith are mounted, the worm shaft from the housing for the purpose of fastening the rotor of an electric motor, its stator is flanged to the gear housing, and protrudes a cooling impeller and a brake drum, against the lateral surface of which the brake shoes of the braking device, which are actuated by an electromagnet, can be placed.

Es ist bekannt, dass der Fahrkorb eines Personen-oder Lastenaufzuges durch eine Winde betätigt wird, die meist am oberen Ende des Aufzugschachtes angeordnet ist und im wesentlichen aus einem Untersetzungsgetriebe mit Schnecke und Schneckenrad besteht. Die Schnecke und das Schneckenrad sind in einem mit Öl gefüllten Getriebegehäuse gelagert. Die langsam laufende Schneckenradwelle des Getriebes ist mit einer Seilscheibe oder Treibscheibe verbunden, über welche die den Fahrkorb tragenden Seile laufen, während die schnell laufende Schneckenwelle fast immer mit einem als Drehstrommotor ausgebildeten Elektromotor in einer Antriebsverbindung steht. Die Winde ist ferner mit einer Bremsvorrichtung ausgestattet, die in der Regel zwei mit Bremsbelagwerkstoffen versehene Bremsbacken aufweist, welche mit Hilfe von Elektromagneten entgegen Federkräften in der Öffnungsstellung gehalten werden, so dass die Bremse automatisch beim Stromausfall anspricht und den Aufzug anhält.It is known that the elevator car of a passenger or freight elevator is actuated by a winch, which is usually arranged at the upper end of the elevator shaft and essentially consists of a reduction gear with worm and worm wheel. The worm and worm wheel are stored in a gear housing filled with oil. The slow-running worm wheel shaft of the transmission is connected to a rope pulley or traction sheave over which the cables carrying the car run, while the fast-running worm shaft is almost always in a drive connection with an electric motor designed as a three-phase motor. The winch is also equipped with a braking device, which usually has two brake shoes provided with brake pad materials, which are held in the open position by means of electromagnets against spring forces, so that the brake responds automatically in the event of a power failure and stops the elevator.

Aus der FR-A-2 297 803 ist bereits eine Winde für einen Personen- oder Lastenaufzug der eingangs genannten Art bekannt, bei der auf der aus dem Getriebsgehäuse vorstehenden Schneckenwelle ein Kühlflügelrad und die Bremstrommel befestigt sind. Bei dieser bekannten Winde ist der Elektromotor sowie die Bremsvorrichtung als eine Baueinheit ausgeführt, welche an der Stirnseite des Getriebegehäuses angeflanscht ist. Dabei dient das Motorgehäuse als Bremsbackenträger, wobei jede Bremsbacke um einen Stift verschwenkbar ist, der am Motorgehäuse befestigt ist, und der Elektromagnet zur Betätigung der Bremsbacken ebenfalls auf dem Gehäuse des Elektromotors festgelegt ist. Die Bremsbacken wirken auf den Mantel einer zylindrischen Trommel des Kühlflügelrades, welches auf dem freien Ende der Schneckenwelle unmittelbar gelagert ist. Bei der schnellen Drehbewegung der Schneckenwelle wird ein Zwangsluftstrom erzeugt, der durch den Elektromotor verläuft und an dessen freiem Ende radial nach aussen austritt.From FR-A-2 297 803 a winch for a passenger or goods elevator of the type mentioned at the outset is already known, in which a cooling impeller and the brake drum are attached to the worm shaft projecting from the gear housing. In this known winch, the electric motor and the braking device are designed as a structural unit which is flanged onto the end face of the gear housing. The motor housing serves as a brake shoe carrier, each brake shoe being pivotable about a pin which is fastened to the motor housing, and the electromagnet for actuating the brake shoes is also fixed on the housing of the electric motor. The brake shoes act on the jacket of a cylindrical drum of the cooling impeller, which is mounted directly on the free end of the worm shaft. When the worm shaft rotates rapidly, a forced air flow is generated which runs through the electric motor and exits radially outwards at its free end.

Die bekannte Winde weist mehrere Nachteile auf. So ist z.B. der Hersteller von Aufzugswinden daran gebunden, Elektromotor und Bremsvorrichtung von einem und dem gleichen Hersteller zu beziehen, da beide Vorrichtungen nur als Baueinheit bezogen werden können und konstruktiv aufeinander abgestimmt sind. Dadurch ist der Wettbewerb erheblich eingeschränkt. Die in einer bestimmten Weise vorgeschriebene Flanschverbindung zwischen dem Elektromotor und dem Getriebegehäuse legt gleichzeitig die Lage der Bremsvorrichtung fest, da diese als Baueinheit mit dem Elektromotor konstruktiv verbunden ist. Dies hat den Nachteil zur Folge, dass ein grösserer Platzbedarf beansprucht wird, so dass das Getriebe unter Umständen bei beengten Platzverhältnissen nicht einsetzbar oder nur mit erheblichem Aufwand montierbar ist. Schliesslich ist die Art der Luftführung wegen des am freien Ende des Elektromotors in radialer Richtung austretenden Luftstromes nicht besonders effektiv, so dass mit grossen Schaufelquerschnitten gearbeitet werden muss.The known winch has several disadvantages. For example, the manufacturer of elevator winches is bound to purchase the electric motor and braking device from one and the same manufacturer, since both devices can only be obtained as a structural unit and are structurally coordinated with one another. This considerably restricts competition. The flange connection prescribed in a certain way between the electric motor and the gearbox housing also defines the position of the braking device, since this is structurally connected to the electric motor as a structural unit. This has the disadvantage that a larger space is required, so that the gearbox may not be able to be used in circumstances where space is limited or can only be assembled with considerable effort. Finally, the type of air flow is not particularly effective because of the air flow emerging at the free end of the electric motor in the radial direction, so that large blade cross sections must be used.

Der Erfindung liegt die Aufgabe zugrunde, eine Winde der eingangs genannten Art zu verbessern derart, dass die Windenkonstruktion vereinfacht und billiger wird, einen geringeren Wartungsaufwand erfordert und leichter selbst unter kleinen Platzverhältnissen zu montieren ist. Gleichzeitig soll die Effektivität der Zwangsbelüftung verbessert werden.The invention has for its object to improve a winch of the type mentioned in such a way that the winch construction is simplified and cheaper, requires less maintenance and is easier to assemble even in small spaces. At the same time, the effectiveness of forced ventilation is to be improved.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale gelöst. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den Merkmalen der Unteransprüche.This object is achieved by the features mentioned in the characterizing part of claim 1. Further advantageous configurations result from the features of the subclaims.

Bei der erfindungsgemässen Winde werden der als Antrieb dienende Drehstrommotor und die Bremsvorrichtung voneinander als getrennte Bauteile ausgeführt. Während der Drehstrommotor in an sich bekannter Weise an die Stirnseite des Getriebegehäuses angeflanscht ist, wird die gesamte Bremsvorrichtung von einem Deckel getragen, der auf die freie Stirnseite des Motorgehäuses aufgeflanscht ist. Der Deckel läst sich dabei in einer beliebigen Winkelstellung gegenüber dem Motorgehäuse verdrehen und montieren, so dass die Platzverhältnisse in dem am oberen Ende des Fahrstuhlschachtes angeordneten Raum optimal ausgenutzt werden können und damit die Montage erheblich erleichtert wird. Bei der erfindungsgemässen Winde kann die gesamte Bremsvorrichtung auf dem Deckel vormontiert werden und als Baueinheit von einer von der Motorfirma unabhängigen Firma hergestellt werden, so dass der Wettbewerb geöffnet wird. Die Wartungsarbeiten werden wesentlich erleichtert, da die gesamte Bremsvorrichtung durch Lösen des Deckelflansches vom Motorgehäuse entfernt werden kann um gewartet oder repariert zu werden. Gleichzeitig wird der Motor zugänglich. Der Deckel besitzt einen zentral angeordneten Lagerflansch, welcher zur Aufnahme eines Hilfslagers für das Schneckenwellenende dient, so dass die Schneckenwelle dreifach gelagert ist. Das Hilfslager befindet sich in unmittelbarer Nähe der Bremstrommel, die auf dem konischen Schneckenwellenende festgelegt ist, so dass eine nahezu schwingungsfreie Lagerung des Wellenendes auch während des Bremsbetriebes, bei welchem sich die am Deckel gelagerten Bremsbacken gegen den Trommelmantel anlegen, gewährleistet ist.In the winch according to the invention, the three-phase motor serving as the drive and the braking device are designed as separate components from one another. While the three-phase motor is flanged to the end face of the gear housing in a manner known per se, the entire braking device is carried by a cover which is flanged onto the free end face of the motor housing. The cover can be rotated and installed in any angular position with respect to the motor housing, so that the space available in the space arranged at the upper end of the elevator shaft can be optimally used and installation is thus made considerably easier. In the winch according to the invention, the entire braking device can be preassembled on the cover and manufactured as a structural unit by a company that is independent of the motor company, so that the competition is opened. Maintenance work is made considerably easier since the entire braking device can be removed from the motor housing by loosening the cover flange in order to be serviced or repaired. At the same time, the engine becomes accessible. The cover has a centrally arranged bearing flange, which is used to hold an auxiliary bearing for the worm shaft end, so that the worm shaft is mounted in triplicate. The auxiliary bearing is located in the immediate vicinity of the brake drum, which is fixed on the conical worm shaft end, so that an almost vibration-free mounting of the shaft end is guaranteed even during braking operation, in which the brake shoes mounted on the cover rest against the drum shell.

Im Boden des trommelförmig ausgebildeten Deckels befinden sich Durchbrüche, deren Zweck nachfolgend noch erklärt werden soll. In dem von der Bremstrommel und dem Deckel umschriebenen Raum befindet sich das Kühlflügelrad, welches auf der Nabe der Bremstrommel fixiert ist. Bei der schnellen Drehbewegung der Schneckenwelle bewirkt das Kühlflügelrad eine Zwangsbelüftung des Elektromotors und des Getriebegehäuses, indem die Luft durch Schlitze im Bereich des Flansches zwischen Getriebe und Elektromotor eintritt, durch den Rotor und die Durchbrüche im Deckel hindurchgesaugt wird und anschliessend im spitzen Winkel zur äusseren Mantelfläche des Deckels wieder zum Getriebegehäuse geleitet wird, um dieses zu umströmen. Durch diese Luftführung, bei der der austretende Luftstrom zum Gehäuse zurückgeleitet wird und die Aussenfläche des Gehäuses umströmt, wird die Effektivität der Kühlung erheblich verbessert.There are openings in the bottom of the drum-shaped cover, the purpose of which will be explained below. The cooling impeller, which is fixed on the hub of the brake drum, is located in the space circumscribed by the brake drum and the cover. When the worm shaft rotates rapidly, the cooling impeller forces the electric motor and the gearbox housing to be ventilated by venting the air Slits in the area of the flange between the gearbox and the electric motor, are sucked through the rotor and the openings in the cover and are then directed at an acute angle to the outer surface of the cover to the gearbox housing in order to flow around it. This air flow, in which the exiting air flow is returned to the housing and flows around the outer surface of the housing, considerably improves the effectiveness of the cooling.

Somit ist die erfindungsgemässe Konstruktion ausserordentlich wartungsfreundlich, da das Bremsaggregat auf einem von dem Drehstrommotor unabhängigen Deckel getragen wird. Dieser Deckel lässt sich in einem beliebigen Winkel zum Motorgehäuse anordnen, so dass die Platzverhältnisse optimal ausgenutzt werden können und die Montage erleichtert wird. Da Motor und Bremsvorrichtung konstruktiv voneinander unabhängige Baugruppen darstellen, ist der Windenhersteller nicht mehr an einen und denselben Motorhersteller gebunden, sondern die Bremsvorrichtungen können mit beliebigen Motoren kombiniert werden. Dadurch wird der Wettbewerb geöffnet. Die Bremsvorrichtung kann vormontiert werden, so dass die Montagearbeiten unter beengten Raumverhältnissen im Maschinenraum des Aufzugschachtes reduziert werden.The construction according to the invention is therefore extremely easy to maintain, since the brake unit is carried on a cover which is independent of the three-phase motor. This cover can be arranged at any angle to the motor housing, so that the space can be optimally used and installation is made easier. Since the motor and braking device are structurally independent assemblies, the winch manufacturer is no longer bound to the same motor manufacturer, but the braking devices can be combined with any motor. This will open the competition. The braking device can be preassembled so that the assembly work is reduced in the restricted space in the machine room of the elevator shaft.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels anhand der Zeichnung.Further features, details and advantages of the invention result from the following description of a preferred exemplary embodiment with reference to the drawing.

In der einzigen Abbildung ist die erfindungsgemässe Winde mit dem Bezugszeichen 1 bezeichnet. Die Winde 1 umfasst eine Schnecke 2 und ein damit kämmendes Schneckenrad 3, wobei Schnecke und Schneckenrad in einem ölgefüllten Getriebegehäuse 4 angeordnet sind. Es ist insbesondere zu erkennen, dass die Schnecke 2 an der schnell laufenden Welle 5 des Untersetzungsgetriebes befestigt ist, welche ihrerseits mit dem vorderen Ende 6 in der vorderen Wand des Getriebegehäuses 4 mittels eines Lagers 7 und in der hinteren Wand 8 mittels eines Lagers 9 mit Sicherung 10 aufgenommen wird.In the single figure, the winch according to the invention is designated by reference number 1. The winch 1 comprises a worm 2 and a worm wheel 3 meshing therewith, the worm and worm wheel being arranged in an oil-filled gear housing 4. It can be seen in particular that the worm 2 is fastened to the high-speed shaft 5 of the reduction gear, which in turn has a front end 6 in the front wall of the gear housing 4 by means of a bearing 7 and in the rear wall 8 by a bearing 9 Fuse 10 is added.

Das Gehäuse des Drehstrommotors 12 ist mit Flanschen versehen, wobei der in bezug auf die Figur rechte Flansch 13 zur Befestigung am Getriebegehäuse 4 dient, während der linke Flansch 14 mit dem Flansch 15 des Deckels 16 verbunden sein kann. Der Flansch 15 des Deckels 16 ist rotationssymmetrisch ausgebildet, so dass die gesamte Bremsvorrichtung 17 gegenüber dem Gehäuse des Drehstrommotors 12 in einer beliebigen Winkelstellung montierbar ist und dadurch die Platzverhältnisse optimal ausgenutzt werden können.The housing of the three-phase motor 12 is provided with flanges, the flange 13 on the right in relation to the figure being used for attachment to the gear housing 4, while the left flange 14 can be connected to the flange 15 of the cover 16. The flange 15 of the cover 16 is designed to be rotationally symmetrical, so that the entire braking device 17 can be mounted in any angular position relative to the housing of the three-phase motor 12 and the space available can thereby be optimally utilized.

Der Deckel 16 ist trommelförmig ausgebildet und besitzt einen zentralen Lagerflansch 18, der zur Aufnahme eines Hilfslagers 19 dient. Im Deckelboden befinden sich Durchbrüche 20, deren Zweck später noch erklärt wird.The cover 16 is drum-shaped and has a central bearing flange 18 which serves to receive an auxiliary bearing 19. There are openings 20 in the lid base, the purpose of which will be explained later.

Bei der gezeigten Montagestellung weist der Deckel 16 an seinem oberen Ende Lageraugen 21 auf, in denen jeweils mittels eines Lagerbolzens 22 jeweils eine Bremsbacke 23 schwenkbar gelagert ist. Es ist in der Zeichnung nur eine Bremsbacke dargestellt. Die beiden Bremsbacken werden in an sich bekannter Weise durch Federkräfte zusammengezogen, so dass sich ihre Bremsbeläge gegen den Mantel der Bremstrommel 24 anlegen, wenn der Elektromagnet 25 stromlos ist.In the assembly position shown, the cover 16 has bearing eyes 21 at its upper end, in each of which a brake shoe 23 is pivotably mounted by means of a bearing pin 22. Only one brake shoe is shown in the drawing. The two brake shoes are pulled together in a manner known per se by spring forces, so that their brake pads lie against the jacket of the brake drum 24 when the electromagnet 25 is de-energized.

Die Bremstrommel 24 ist mit ihrer Nabe 26 auf dem konischen Ende der Schneckenwelle 5 festgelegt. Auf der Nabe ist das Kühlflügelrad 27 festgelegt. Bei einer schnellen Drehung der Schneckenwelle 5 wird ein Zwangsluftstrom in Richtung der Pfeile 28 erzeugt, wobei die Luft durch Gehäuseschlitze 29 in das Getriebegehäuse 4 eintritt und in Richtung der Pfeile den Rotor 11 des Drehstrommotors 12 durchströmt, dann durch die Durchbrüche 20 des Deckels zum Kühlflügelrad 27 und von dort zur Aussenseite des Deckels 16 strömt. Die Luft wird daher zum Gehäuse zurückgeleitet und umströmt die Aussenfläche des Gehäuses, so dass die Effektivität der Kühlung verbessert wird. Unter Umständen können die Flügel des Kühlflügelrades 27 verlängert sein, so dass sie etwas über den Mantel der Bremstrommel 24 hinausragen. Die Wirkung der zum Gehäuse zurückströmenden Luft wird dadurch noch verbessert.The brake drum 24 is fixed with its hub 26 on the conical end of the worm shaft 5. The cooling impeller 27 is fixed on the hub. When the worm shaft 5 rotates rapidly, a forced air flow is generated in the direction of the arrows 28, the air entering the transmission housing 4 through housing slots 29 and flowing through the rotor 11 of the three-phase motor 12 in the direction of the arrows, then through the openings 20 in the cover to the cooling impeller 27 and flows from there to the outside of the cover 16. The air is therefore returned to the housing and flows around the outer surface of the housing, so that the effectiveness of the cooling is improved. Under certain circumstances, the blades of the cooling impeller 27 can be extended so that they protrude slightly beyond the jacket of the brake drum 24. This further improves the effect of the air flowing back to the housing.

Claims (7)

1. A winch for a passenger or freight elevator comprising a braking device (17) and a housing (4) for the step-down gear system which accommodates a worm (2) and a worm gear (3i meshing with said worm, with the worm shaft (5) protruding from said housing in order to fasten the rotor (11) of an electric motor (12), whose stator is flanged to the gearbox, as well as a cooling fan (27) and a brake drum (24), against whose outer surface the brake shoes (23) of the braking device, which are actuated by an electromagnet (25), can be applied, characterized in that a housing lid (16) is flanged to the free end (14) of the electric motor (12), with the brake shoes (23) as well as the electromagnet (25) actuating said brake shoes being mounted on said housing lid, and that on the end of the worm shaft (5) protruding from said lid (16) the cooling fan and the brake drum (24) are mounted.
2. The winch in accordance with claim 1, characterized in that the lid (16) is provided with through-holes (20) for an air flow generated by the cooling fan (27).
3. The winch in accordance with claim 2, characterized in that the lid (16) has a drum-like design, and that the through-holes (20) are arranged in the floor of the drum in such a way that an amount of air (28) axially sucked in by the cooling fan (27) through the electric motor (12) is released at an acute angle with respect to the shell of the drum.
4. The winch in accordance with one of claims 1 to 3, characterized in that the lid (16) is provided with a dynamically balanced connecting flange (15) by means of which it can be attached to the motor housing (12).
5. The winch in accordance with one of claims 1 to 4, characterized in thatthe lid (16) is provided with a centrally disposed bearing flange (18) for accommodating an auxiliary bearing (19) for the end of the worm shaft.
6. The winch in accordance with one of claims 1 to 4, characterized in that the lid (16) is provided with bearing lugs (21) accommodating the brake shoes (23) by means of bearing pins (22).
7. The winch in accordance with one of claims 1 to 3, characterized in that the cooling fan (27) is mounted on the hub (26) of the brake drum (24) and is attached to said hub.
EP82103326A 1981-10-27 1982-04-20 Hoist for a passenger or goods elevator Expired EP0078874B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT24684/81A IT1140465B (en) 1981-10-27 1981-10-27 IMPROVED STRUCTURE OF LIFT AND LIFT HOISTS
IT2468481 1981-10-27

Publications (3)

Publication Number Publication Date
EP0078874A2 EP0078874A2 (en) 1983-05-18
EP0078874A3 EP0078874A3 (en) 1983-06-22
EP0078874B1 true EP0078874B1 (en) 1985-12-18

Family

ID=11214380

Family Applications (2)

Application Number Title Priority Date Filing Date
EP82103326A Expired EP0078874B1 (en) 1981-10-27 1982-04-20 Hoist for a passenger or goods elevator
EP82103328A Expired EP0079420B1 (en) 1981-10-27 1982-04-20 Bearing for the hoist of a passenger or goods elevator car

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP82103328A Expired EP0079420B1 (en) 1981-10-27 1982-04-20 Bearing for the hoist of a passenger or goods elevator car

Country Status (3)

Country Link
EP (2) EP0078874B1 (en)
DE (2) DE3267988D1 (en)
IT (1) IT1140465B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH666673A5 (en) * 1985-05-10 1988-08-15 Gebauer Ag Drive for lifts and method of assembly.
ATE110350T1 (en) * 1990-07-26 1994-09-15 Inventio Ag GEARLESS DRIVE MACHINE FOR ELEVATORS.
US5149242A (en) * 1991-02-11 1992-09-22 Eaton-Kenway, Inc. Vertical drive apparatus for storage and retrieval vehicles
TR25098A (en) * 1991-07-24 1992-11-01 Inventio Ag GEARLESS DRIVE MACHINE FOR ELEVATORS.
IT1253037B (en) * 1991-09-24 1995-07-10 Alberto Sassi WINCH FOR LIFTS WITH PERFECTED SUPPORT
ATE184573T1 (en) * 1994-03-25 1999-10-15 Inventio Ag DRIVE MACHINE FOR ELEVATORS
SG144690A1 (en) * 1998-07-13 2008-08-28 Inventio Ag Rope traction elevator
EP1048603B1 (en) * 1998-07-13 2003-09-17 Inventio Ag Inclined arrangement for cable elevator drive
US8307833B2 (en) 2007-04-26 2012-11-13 American Accessories International Llc Ashtray assembly
EA012815B1 (en) * 2007-06-07 2009-12-30 Руп Завод "Могилевлифтмаш" Elevator car catch
WO2016114729A1 (en) * 2015-01-17 2016-07-21 Akiş Asansör Maki̇na Motor Döküm Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ Transmission system developed for elevator drive machines with gear
WO2019236030A2 (en) * 2018-03-19 2019-12-12 Akiş Asansör Maki̇na Motor Döküm Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ Transmission gear connection of geared elevator traction machine and change of its body structure

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FR1119409A (en) * 1954-02-17 1956-06-20 Asea Ab Arrangement for coupling a driven machine with its drive assembly
FR1138684A (en) * 1955-12-20 1957-06-18 Safety device for winches and the like
DE1106471B (en) * 1959-11-27 1961-05-10 Maschf Veb Electric pulley block with adjustable support flanges
DE1431136A1 (en) * 1963-04-04 1969-03-20 Zd Y V I Plzen Narodni Podnik Method and device for measuring the tension of a rope wound on a rope drum
DE1280518B (en) * 1964-12-05 1968-10-17 Alois Kasper Hebezeugfabrik Elevator gear with three-phase motor
DE1269317B (en) * 1966-11-12 1968-05-30 Stahl R Fa Winch, especially for elevators
DE1288773B (en) * 1967-10-18 1969-02-06 Alois Kasper Hebezeugfabrik Elevator gearbox with external rotor motor
DE1756938C3 (en) * 1968-08-06 1973-02-08 Alois Kasper Hebezeugfabrik Elevator gearbox with external rotor motor
US3641832A (en) * 1969-03-26 1972-02-15 Hitachi Ltd A worm-gear-type speed reduction device for an elevator
DE2408722A1 (en) * 1974-02-22 1975-09-04 Alois Kasper Hebezeugfabrik Drive mechanism for lift - has part of cooling air current directed to annular gap inside brake sleeve
DE2545630A1 (en) * 1975-01-17 1976-07-22 Alberto Sassi WINCH, IN PARTICULAR FOR ELEVATORS

Also Published As

Publication number Publication date
EP0079420A1 (en) 1983-05-25
EP0079420B1 (en) 1987-04-08
IT1140465B (en) 1986-09-24
EP0078874A2 (en) 1983-05-18
DE3275993D1 (en) 1987-05-14
EP0078874A3 (en) 1983-06-22
IT8124684A0 (en) 1981-10-27
DE3267988D1 (en) 1986-01-30

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