EP0078875A2 - Dispositif de mise à niveau de la cabine d'un ascenseur ou d'un monte-charge - Google Patents

Dispositif de mise à niveau de la cabine d'un ascenseur ou d'un monte-charge Download PDF

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Publication number
EP0078875A2
EP0078875A2 EP82103327A EP82103327A EP0078875A2 EP 0078875 A2 EP0078875 A2 EP 0078875A2 EP 82103327 A EP82103327 A EP 82103327A EP 82103327 A EP82103327 A EP 82103327A EP 0078875 A2 EP0078875 A2 EP 0078875A2
Authority
EP
European Patent Office
Prior art keywords
gear housing
shaft
worm wheel
control device
car
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.)
Withdrawn
Application number
EP82103327A
Other languages
German (de)
English (en)
Other versions
EP0078875A3 (fr
Inventor
Giovanni Frasca
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.)
SICOR SpA
SICOR Societa Italiana Corticosteroidi SRL
Original Assignee
SICOR SpA
SICOR Societa Italiana Corticosteroidi SRL
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 SICOR SpA, SICOR Societa Italiana Corticosteroidi SRL filed Critical SICOR SpA
Publication of EP0078875A2 publication Critical patent/EP0078875A2/fr
Publication of EP0078875A3 publication Critical patent/EP0078875A3/fr
Withdrawn legal-status Critical Current

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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
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
    • B66B1/42—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings separate from the main drive

Definitions

  • the invention relates to a device for leveling the elevator car of a passenger or freight elevator, with a drive and brake winch mounted in a gear housing, comprising a worm and a meshing worm wheel, which is connected to the traction sheave.
  • the car of a passenger or freight elevator is operated 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 S chneckenradwelle the transmission is connected with a cable pulley over which run ropes supporting the car, while the high-speed worm shaft almost always associated with a form of a rotary current motor electric motor in a drive connection.
  • the winch is also equipped with a braking device, usually two with a brake Has bearing material provided brake shoes, which are held by means of electromagnets against spring forces in the open position, so that the brake responds automatically in the event of a power failure and stops the elevator.
  • a braking device usually two with a brake Has bearing material provided brake shoes, which are held by means of electromagnets against spring forces in the open position, so that the brake responds automatically in the event of a power failure and stops the elevator.
  • a requirement for the winch of a passenger or freight elevator is to bring the car under braking action / exactly to the height of the floor to which the car should reach. This is especially for hospitals of the utmost importance, into which with cars of operation vehicles are carried by patients who have to be moved Vibrations g sok from the car to the floor.
  • the main factors that can influence the leveling of the car in relation to the floor are the loading of the car, the speed at which the basket approaches and its speed on arrival at the desired floor, and the heat status of the braking device.
  • Such devices which limit the approach or arrival speed of the car, so that the brakes are used effectively and the kinetic energy is greatly reduced.
  • Such devices usually consist of a second motor, which is connected to the first motor by means of a friction clutch and runs at a lower speed due to the use of a reduction gear, a friction clutch being provided between the winch motor and the pulley.
  • Such devices increase the size of the winch assembly, incur additional costs, and lengthen the assembly work, with additional parts required to effect control and insertion of the parts at the desired time.
  • a winch of the type described above, for. B. is automatically braked in the event of a power failure by the braking device, then it may be that the loaded car is at any point in the elevator shaft and is not aligned with a floor.
  • the automatically opening doors remain closed.
  • the brake shoes of the braking device must be released mechanically or with the help of an emergency generator, so that the worm shaft can be rotated with the aid of a handwheel, so that the car is lowered to one floor and the automatic doors can be opened. Difficulties arise, however, because considerable forces have to be exerted on the handwheel, the greater the lower the counterweight in the car shaft.
  • the same state of a shutdown of the winch can also occur if the car, for example H too much weight is overloaded so that it slows down somewhat after braking and as a result does not open the automatic doors.
  • the invention has for its object to provide a device for leveling the elevator car of a passenger or goods lift of the type mentioned, which has a simple construction, is space-saving and inexpensive and at the same time enables the use of a simplified drive unit.
  • the device is also intended to work safely and reliably and, in emergencies, to allow the trapped people to be freed easily when an overloaded car sags.
  • the gear housing is not fastened to a foundation as in the case of conventional car winches for passenger or goods elevators, but rather can be pivoted about the geometric axis of the unit formed from worm wheel and traction sheave. If, in this construction, the drive worm meshing with the worm wheel is braked, then the housing is braked relative to the worm wheel and the traction sheave. However, because the gearbox around the axis of the worm wheel and the traction sheave is pivotally mounted, it can be pivoted with the aid of a control device in the clockwise or counterclockwise direction, the worm wheel and traction sheave rotating, so that the car is lowered or raised by a corresponding amount. The control device is controlled in a manner known per se via sensors in such a way that the desired height compensation takes place with respect to the floor.
  • the gear housing can advantageously be fastened on a shaft mounted in two support brackets, on which the worm wheel connected to the traction sheave via a hollow shaft can be rotatably mounted.
  • the gear housing can, however, also be rotatably mounted on an axis fixed in the support brackets, on which the worm wheel connected to the traction sheave via a hollow shaft is also rotatably mounted.
  • the support brackets are in turn attached to a supporting foundation at the top of the shaft.
  • a hydraulic or pneumatic double-acting working cylinder can be advantageously provided as the control device, which can be actuated mechanically or electrically, if necessary, with an emergency power generator.
  • This working cylinder can be articulated with its piston rod via an articulated connection on the gear housing and with its cylinder on the foundation.
  • the working cylinder can be connected to a manually operable pressure medium pump, a sagging car can be easily aligned with the floor, so that the automatically operated doors open.
  • the control device therefore serves in a simple manner as a release device that can be actuated easily regardless of the load on the basket is.
  • the motor and the braking device are flanged directly to the transmission housing, so that the transmission and the drive and braking unit can be pivoted together about the supported axis by means of the control device in the braked state.
  • the winch generally designated 1
  • the winch comprises a worm reduction gear 2 with a worm wheel 3, the worm wheel 3 being arranged in an oil-filled gear housing 4.
  • the worm 2 is attached to the high-speed shaft 5 of the reduction gear 2, which in turn with the 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 means of a bearing 9 Fuse 10 is added.
  • the part of the high-speed shaft 5 protruding from the transmission housing, on which the rotor 11 of the three-phase motor 12 is arranged, carries at its free end the hub 13 of the braking device, the brake shoes of which are not shown in detail here, are held in the open position by the electromagnet 14.
  • the worm wheel 3 integrally connected to a hollow shaft 15, which is the slow-running shaft of the reduction gear and on the end flange 16 of which a recess for a bearing 17 is provided.
  • a cable pulley 18 is flanged to the end flange 16 of the hollow shaft by means of bolts and has circumferential grooves in which the supporting cables for the passenger or goods car of the elevator run.
  • the middle hollow shaft 15, which is connected in one piece to the worm wheel 3, is mounted with the help of bearings on an axis 20, which has its ends mounted in a rotationally fixed manner in two supporting cores 19.
  • the support brackets 19 are attached to the foundation 21.
  • the hollow shaft 15 is rotatably supported by means of a slide bearing 22 and a roller bearing 17 on the fixed axis 20, so that the rope or traction sheave 18 can be rotated via the worm wheel 3 and the elevator car of the passenger or goods lift is raised accordingly or is lowered.
  • the gear housing 4 of the reduction gear is pivotally mounted on the one hand on the fixed axis 20 and on the other hand with its gear housing cover via a slide bearing 23 on the hollow shaft 15.
  • the control device 25 engages the gear housing via an arm 24.
  • the control device 25 is connected at the joints 26 and 27 to the foundation 21 on the one hand and to the arm 24 on the other hand.
  • control device 25 is articulated horizontally at the point 26 and acts on the lower bottom of the housing by means of an articulated fork and a gusset plate.
  • the gear housing can be pivoted clockwise or counterclockwise with respect to FIG. 1.
  • the disk 18 is also pivoted in one direction or the other, so that the car is moved slowly upward or next according to the maximum permissible movement of the control device. In this /, a fine readjustment is carried out of the car, so that this is accurately leveled until the car floor, the corresponding level of the floor has reached.
  • the above-described construction of the floor leveling device according to the invention is extremely simple and requires little maintenance. Complicated control elements and a complex three-phase motor with reduction stages are eliminated, so that the construction is also cheap. The assembly effort is reduced, which results in a reduction in the cost price. Since the control device 25 can be operated by means of an emergency generator or also by hand, the floor leveling device can also be used as a release device if the car has sagged due to overload and the automatic doors no longer open. The fully automatic actuation of the control device takes place in a manner known per se via sensors which detect the car position relative to the floor level.
EP82103327A 1981-10-27 1982-04-20 Dispositif de mise à niveau de la cabine d'un ascenseur ou d'un monte-charge Withdrawn EP0078875A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT24685/81A IT1168049B (it) 1981-10-27 1981-10-27 Disposizione di microlivellamento al piano della cabina di ascensori e montacarichi in genere
IT2468581 1981-10-27

Publications (2)

Publication Number Publication Date
EP0078875A2 true EP0078875A2 (fr) 1983-05-18
EP0078875A3 EP0078875A3 (fr) 1983-06-15

Family

ID=11214386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103327A Withdrawn EP0078875A3 (fr) 1981-10-27 1982-04-20 Dispositif de mise à niveau de la cabine d'un ascenseur ou d'un monte-charge

Country Status (2)

Country Link
EP (1) EP0078875A3 (fr)
IT (1) IT1168049B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163127A (en) * 1984-08-13 1986-02-19 Dover Corp Elevators with improved car levelling
US6230844B1 (en) * 1998-07-13 2001-05-15 Inventio Ag Rope traction elevator
KR100648891B1 (ko) 2005-11-04 2006-11-24 삼성에버랜드 주식회사 엘리베이터용 권상기
FR3079194A1 (fr) * 2018-03-22 2019-09-27 Poma Dispositif d'entrainement des cables de traction d'au moins un vehicule sur une voie inclinee ou verticale et installation de transport de passagers equipee dudit dispositif

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR576977A (fr) * 1924-02-08 1924-08-29 Dispositif de réglage des câbles d'extraction de mines
DE520101C (de) * 1930-03-25 1931-03-07 Maschb Akt Ges Vorm Beck & Hen Feineinstellung fuer Aufzuege
GB571614A (en) * 1942-10-12 1945-08-31 Asea Ab Improvements in heavy machinery driving arrangements supported by the driven shaft
FR1202830A (fr) * 1957-06-17 1960-01-13 Dispositif de réglage micrométrique de la position des pièces mobiles à déplacement commandé par moteur
FR1239955A (fr) * 1959-07-03 1960-09-02 Creusot Forges Ateliers Dispositif mécanique de mise à niveau de la cage pour machines d'extraction
DE1137796B (de) * 1959-09-07 1962-10-11 Inventio Ag Verfahren zum Erzielen eines ruckfreien Anfahrens bei elektrischen Antrieben mit mechanischer Haltebremse und Anordnung zur Durchfuehrung des Verfahrens
GB1006905A (en) * 1961-07-18 1965-10-06 Anglo Amer Corp South Africa Mine hoisting equipment
FR1447411A (fr) * 1965-06-17 1966-07-29 Perfectionnements aux dispositifs de sécurité du système de levage par câble des ascenseurs de chantier
FR2297803A1 (fr) * 1975-01-17 1976-08-13 Sassi Alberto Treuil en particulier pour ascenseurs

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR576977A (fr) * 1924-02-08 1924-08-29 Dispositif de réglage des câbles d'extraction de mines
DE520101C (de) * 1930-03-25 1931-03-07 Maschb Akt Ges Vorm Beck & Hen Feineinstellung fuer Aufzuege
GB571614A (en) * 1942-10-12 1945-08-31 Asea Ab Improvements in heavy machinery driving arrangements supported by the driven shaft
FR1202830A (fr) * 1957-06-17 1960-01-13 Dispositif de réglage micrométrique de la position des pièces mobiles à déplacement commandé par moteur
FR1239955A (fr) * 1959-07-03 1960-09-02 Creusot Forges Ateliers Dispositif mécanique de mise à niveau de la cage pour machines d'extraction
DE1137796B (de) * 1959-09-07 1962-10-11 Inventio Ag Verfahren zum Erzielen eines ruckfreien Anfahrens bei elektrischen Antrieben mit mechanischer Haltebremse und Anordnung zur Durchfuehrung des Verfahrens
GB1006905A (en) * 1961-07-18 1965-10-06 Anglo Amer Corp South Africa Mine hoisting equipment
FR1447411A (fr) * 1965-06-17 1966-07-29 Perfectionnements aux dispositifs de sécurité du système de levage par câble des ascenseurs de chantier
FR2297803A1 (fr) * 1975-01-17 1976-08-13 Sassi Alberto Treuil en particulier pour ascenseurs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2163127A (en) * 1984-08-13 1986-02-19 Dover Corp Elevators with improved car levelling
US6230844B1 (en) * 1998-07-13 2001-05-15 Inventio Ag Rope traction elevator
KR100648891B1 (ko) 2005-11-04 2006-11-24 삼성에버랜드 주식회사 엘리베이터용 권상기
FR3079194A1 (fr) * 2018-03-22 2019-09-27 Poma Dispositif d'entrainement des cables de traction d'au moins un vehicule sur une voie inclinee ou verticale et installation de transport de passagers equipee dudit dispositif

Also Published As

Publication number Publication date
EP0078875A3 (fr) 1983-06-15
IT1168049B (it) 1987-05-20
IT8124685A0 (it) 1981-10-27

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Inventor name: FRASCA, GIOVANNI