EP0895957A2 - Ascenseur à vis-sans-fin - Google Patents

Ascenseur à vis-sans-fin Download PDF

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Publication number
EP0895957A2
EP0895957A2 EP98114868A EP98114868A EP0895957A2 EP 0895957 A2 EP0895957 A2 EP 0895957A2 EP 98114868 A EP98114868 A EP 98114868A EP 98114868 A EP98114868 A EP 98114868A EP 0895957 A2 EP0895957 A2 EP 0895957A2
Authority
EP
European Patent Office
Prior art keywords
screw
elevator
guide
frame
platform
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Withdrawn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
EP98114868A
Other languages
German (de)
English (en)
Other versions
EP0895957A3 (fr
Inventor
Antonio Bagnaia
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.)
Primafase Srl
Original Assignee
Primafase 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 Primafase Srl filed Critical Primafase Srl
Publication of EP0895957A2 publication Critical patent/EP0895957A2/fr
Publication of EP0895957A3 publication Critical patent/EP0895957A3/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Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to an elevator, particularly for transporting people, comprising a guide; a horizontal platform connected in axially sliding manner to the guide; and an actuating device for moving the platform along the guide.
  • actuating devices normally comprise an electric drive motor; a reducer connected to the electric motor; a cable transmission interposed between the reducer and the platform; a counterweight movable parallel to the guide; and an emergency operating unit for manually operating the platform.
  • the motor, reducer and emergency operating unit are normally housed inside a so-called “drive compartment” formed at one axial end of the guide.
  • an elevator particularly for transporting people, comprising a frame, a fixed straight guide fitted to the frame, a platform connected in axially sliding manner to the guide, and actuating means for moving the platform along the guide; the actuating means comprising an electric drive motor; a cable transmission comprising at least a pair of cables, each having a respective first end portion connected integrally to said platform; and a movable element movable parallel to the guide; characterized in that each said cable comprises a respective second end portion connected integrally to said frame, and said movable element carries at least one transmission pulley of said cable; said actuating means also comprising transmission means interposed between said motor and said movable element and cooperating with said motor to move said movable element parallel to said guide.
  • Number 1 in Figures 1 and 2 indicates as a whole an elevator, preferably, though not exclusively, for transporting people.
  • Elevator 1 comprises a fixed supporting frame 2, which has a respective vertical axis 3, extends upwards from a supporting surface 4, and is connected integrally in known manner to a fixed, normally concrete, support 5.
  • frame 2 has a substantially U-shaped cross section, and comprises an end wall 6 contacting fixed support 5, and two lateral walls 7.
  • Lateral walls 7 extend perpendicularly to wall 6, are parallel to each other and spaced transversely, and define, together with a central portion of wall 6, a vertically elongated cavity 8.
  • a straight guide 9 is formed in known manner on frame 2, extends parallel to axis 3, and is fitted, in known manner not described in detail, with a movable frame 10.
  • Frame 10 supports a car 11 (shown schematically), the floor 12 of which extends on the opposite side of lateral walls 7 to end wall 6 ( Figure 3), and is moved in opposite directions along axis 3 by an actuating device 13.
  • Device 13 comprises a known cable transmission 14, 'in turn comprising a number of cables 15, each of which has opposite end portions connected to frame 2 and frame 10 respectively.
  • each cable 15 extends about a respective first pulley 16 carried by frame 2, and about a second transmission pulley 17 carried by a known counterweight 18.
  • Counterweight 18 is housed in axially sliding manner inside cavity 8, and is moved in opposite directions along axis 3 by a powered screw-nut screw assembly 19 forming part of device 13.
  • assembly 19 comprises a screw 20 coaxial with axis 3; and a nut screw 21 connected to screw 20 and forming part of the rotor of a known hollow-shafted electric motor 22, the outer casing of which is connected integrally in known manner to, and moves together with, counterweight 18.
  • a known braking device (not shown) is interposed between the outer casing and the rotor of motor 22.
  • screw 20 extends from supporting surface 4, has opposite end portions connected in rotary manner to and in axially fixed positions with respect to frame 2, and is of a length less than, and preferably equal to half or a third of, the maximum travel effected, in use, by movable frame 10 or by car 11.
  • the length of cables 15 is determined in known manner according to the length of screw 20 and the maximum travel of car 11.
  • an actuating assembly 23 is interposed between screw 20 and frame 2, and provides for angularly and releasably locking screw 20 with respect to frame 2, and for permitting manual rotation of screw 20 to move frame 10, and hence car 11, in the event of a breakdown of motor 22 or when servicing elevator 1.
  • actuating assembly 23 is located adjacent to supporting surface 4, is accessible from the outside through a passage formed through frame 2 and support 5 and closed by a panel 25 fitted on the inside with an operating panel (not shown) , and comprises a perpendicular-axis bevel gear transmission 26.
  • Transmission 26 comprises a first gear 27 fitted to an end portion of screw 20; and a second gear 28 fitted to a shaft 29, which has a respective axis 30 perpendicular to axis 3, and is connected to frame 2 to rotate in axially fixed manner about axis 30.
  • Shaft 29 comprises a portion 31, which projects outwards of panel 25 and is fitted with a handwheel 32, a hub 33 of which is forced against an axial shoulder 34 of portion 31 by a threaded knob 35 screwed to a threaded end portion 36 of portion 31.
  • Shaft 29 is also connected to frame 2 by a releasable angular stop assembly 37, which forms part of assembly 23 and, as shown in Figure 4, comprises, in addition to knob 35, a sleeve 38.
  • Sleeve 38 extends coaxially with axis 30 between frame 2 and hub 33, is welded integrally to hub 33, is connected in axially sliding and angularly fixed manner to shaft 29, is pushed towards knob 35 by a compression spring 39 coaxial with axis 30 and extending between frame 2 and sleeve 38, and comprises a pair of front retaining seats 40, each of which, when hub 33 is positioned contacting shoulder 34, is engaged positively by a respective axial pin 41 integral with and projecting from frame 2.
  • assembly 37 is movable between a retaining work position in which sleeve 38 is set to a forward work position and pins 41 engage seats 40 to hold shaft 29, gear 28 and, hence, screw 20, in angularly fixed positions with respect to frame 2, and a release position in which sleeve 38 is detached from frame 2 and pins 41 extend outside seats 40 to permit rotation of shaft 29 about axis 30 and, hence, rotation of the screw about axis 3.
  • assembly 37 is maintained in the retaining work position, and motor 22 is activated to move counterweight 18 and, hence, car 11.
  • car 11 may be moved manually by simply turning handwheel 32, after first rotating knob 35 to move sleeve 38 into the detached position and, hence, assembly 37 into the release position.
  • elevator 1 described above is extremely compact and cheap to produce, mainly due to the design characteristics of device 13, which is not only compact and cheap to produce in itself, but, unlike known solutions, also provides for eliminating the drive compartment, any maintenance or adjustments to device 13, in fact, being performed from the outside by simply removing panel 25.
  • car 11 may be regulated and/or moved manually by means of a straightforward handwheel on the outside of panel 25.
  • car 11 may be operated manually in an emergency by any authorized person and in utmost safety at all times by working from outside elevator 1, i.e. with no need to operate, even for brief periods of time, underneath or on top of car 11, as with known solutions.
  • the characteristics of device 13, and in particular the fact that screw 20 is much shorter than the travel of car 11, provide for positioning assembly 23 at different points along guide 9 and, hence, for also positioning panel 25 at various intermediate points along guide 9 and not necessarily at one end or the other of guide 9 as with known solutions, so that, besides making better use of the space available, assembly 23 may be so located as to enable fast, easy access and so greatly reduce intervention time in the event of an emergency.
  • Elevator 1 as described above therefore provides for a high degree of efficiency and reliability by featuring components which are not only straightforward, easy to obtain and of proven reliability, but which also operate in the best possible conditions.
  • screw 20 at no time operates in conditions of instability, by being subjected at all times to tensile stress and never to compression and, hence, ultimate-load deformation.
  • nut screw 21 may be connected integrally to counterweight 18, and motor 22 may be connected angularly to screw 20 via the interposition of a device for disconnecting screw 20 from motor 22 to permit manual operation of screw 20 in the event of an emergency.
  • screw-nut screw assembly 19 may be replaced by a different, e.g. hydraulic, actuating device comprising at least one hydraulic actuator acting on an element movable parallel to the respective guide.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP98114868A 1997-08-08 1998-08-07 Ascenseur à vis-sans-fin Withdrawn EP0895957A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO970724 1997-08-08
ITTO970724 IT1293687B1 (it) 1997-08-08 1997-08-08 Gruppo ascensore, particolarmente per lo spostamento di persone.

Publications (2)

Publication Number Publication Date
EP0895957A2 true EP0895957A2 (fr) 1999-02-10
EP0895957A3 EP0895957A3 (fr) 2000-03-15

Family

ID=11415941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114868A Withdrawn EP0895957A3 (fr) 1997-08-08 1998-08-07 Ascenseur à vis-sans-fin

Country Status (2)

Country Link
EP (1) EP0895957A3 (fr)
IT (1) IT1293687B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007174A1 (de) 2011-04-28 2012-10-31 Horst Becker Antriebseinheit zum Bewegen von Lasten und Personen sowie Vorrichtungen zum Bewegen von Personen und Lasten mit derartigen Antriebseinheiten.
WO2014001883A1 (fr) 2012-06-27 2014-01-03 Shs Vermarktungs Ug (Haftungsbeschränkt) & Co. Kg Module d'entraînement à moteur linéaire servant à déplacer des personnes et des charges et dispositifs de déplacement de personnes et de charges équipés de modules d'entraînement de ce type
CN103863925A (zh) * 2014-03-06 2014-06-18 金湘江 丝杠倍增升降系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114455431B (zh) * 2022-01-07 2023-09-26 桂林航天工业学院 一种丝杠驱动式小型电梯

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1478753A (en) * 1974-08-21 1977-07-06 Int Eurolift Etab Lift or elevator
WO1984000743A1 (fr) * 1982-08-06 1984-03-01 Wolfgang Schaffer Ascenseur
GB2179916A (en) * 1985-08-16 1987-03-18 Mitsubishi Electric Corp Elevator system
WO1987004999A1 (fr) * 1986-02-21 1987-08-27 Kockums Marine Aktiebolag Dispositif monte-charge
US5299662A (en) * 1992-07-27 1994-04-05 Otis Elevator Company Linear motor elevator having hybrid roping and stationary primary

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1478753A (en) * 1974-08-21 1977-07-06 Int Eurolift Etab Lift or elevator
WO1984000743A1 (fr) * 1982-08-06 1984-03-01 Wolfgang Schaffer Ascenseur
GB2179916A (en) * 1985-08-16 1987-03-18 Mitsubishi Electric Corp Elevator system
WO1987004999A1 (fr) * 1986-02-21 1987-08-27 Kockums Marine Aktiebolag Dispositif monte-charge
US5299662A (en) * 1992-07-27 1994-04-05 Otis Elevator Company Linear motor elevator having hybrid roping and stationary primary

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007174A1 (de) 2011-04-28 2012-10-31 Horst Becker Antriebseinheit zum Bewegen von Lasten und Personen sowie Vorrichtungen zum Bewegen von Personen und Lasten mit derartigen Antriebseinheiten.
WO2013050824A1 (fr) 2011-04-28 2013-04-11 Shs Vermarktung Ug (Haftungsbeschränkt) & Co. Kg Unité d'entraînement pour déplacer des charges et des personnes, et dispositifs pour déplacer des personnes et des charges au moyen d'unités d'entraînement de ce type
CN103517865A (zh) * 2011-04-28 2014-01-15 Shs营销工具（有限责任）公司 用于移动负载物和乘客的驱动单元以及包括这种驱动单元的装置
US9624074B2 (en) 2011-04-28 2017-04-18 Shs Vermarktung Ug (Haftungsbeschrankt) & Co. Kg Drive unit for moving loads and people, and devices for moving people and loads comprising such drive units
WO2014001883A1 (fr) 2012-06-27 2014-01-03 Shs Vermarktungs Ug (Haftungsbeschränkt) & Co. Kg Module d'entraînement à moteur linéaire servant à déplacer des personnes et des charges et dispositifs de déplacement de personnes et de charges équipés de modules d'entraînement de ce type
DE212013000133U1 (de) 2012-06-27 2015-03-06 Shs Vermarktungs Ug ( Haftungsbeschränkt ) & Co. Kg Linearmotor-Antriebseinheit zum Bewegen von Lasten und Personen sowie Vorrichtungen zum Bewegen von Personen und Lasten mit derartigen Antriebseinheiten
CN103863925A (zh) * 2014-03-06 2014-06-18 金湘江 丝杠倍增升降系统

Also Published As

Publication number Publication date
IT1293687B1 (it) 1999-03-08
ITTO970724A1 (it) 1999-02-08
EP0895957A3 (fr) 2000-03-15

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