EP1493708A2 - Moteur pour ascenseur et monte-charge - Google Patents

Moteur pour ascenseur et monte-charge Download PDF

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Publication number
EP1493708A2
EP1493708A2 EP04015126A EP04015126A EP1493708A2 EP 1493708 A2 EP1493708 A2 EP 1493708A2 EP 04015126 A EP04015126 A EP 04015126A EP 04015126 A EP04015126 A EP 04015126A EP 1493708 A2 EP1493708 A2 EP 1493708A2
Authority
EP
European Patent Office
Prior art keywords
car
counterweight
shaft
drive according
belt
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Withdrawn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
EP04015126A
Other languages
German (de)
English (en)
Other versions
EP1493708A3 (fr
Inventor
Umberto Berselli
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.)
Alberto Sassi SpA
Original Assignee
Alberto Sassi SpA
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 Alberto Sassi SpA filed Critical Alberto Sassi SpA
Publication of EP1493708A2 publication Critical patent/EP1493708A2/fr
Publication of EP1493708A3 publication Critical patent/EP1493708A3/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Withdrawn legal-status Critical Current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
    • B66B11/0484—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a clutch or a coupling system between several motors, e.g. switching different speeds, progressive starting, torque limitation, flywheel
    • 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
    • B66B11/0065—Roping
    • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B66B11/009—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave with separate traction and suspension ropes

Definitions

  • the present invention relates to a drive for elevators and goods hoists.
  • elevators and goods hoists have a car whose dimensions are variable depending on the installation site and on the operating requirements.
  • the car is provided externally with suitable safety elements that are adapted to act as a braking system if the elements that support it become damaged or even break.
  • the elements designed to drive and support the car can be hydraulic or of the cable (or chain) type.
  • the car is moved vertically within an appropriately provided shaft that is made of masonry or of other structural material, inside or outside the installation building, by means of cables (or chains) by a motor.
  • the weight of the car and part of the load can be balanced by means of the presence of suitable counterweights, which are connected to the car by means of one or more metallic cables (the same cables used for traction), engaged in suitable sheaves, so that the car and the counterweight slide within the shaft along mutually parallel paths but with opposite directions.
  • the cables that are used are usually cables made of metal or other materials with excellent mechanical qualities (composite fibers based on Kevlar, carbon or other synthetic materials).
  • composite fibers based on Kevlar, carbon or other synthetic materials are usually cables made of metal or other materials with excellent mechanical qualities.
  • toothed belts provides the same advantages as chains, combining them with considerable quietness, and toothed belts can advantageously replace chains; this entails a high comfort for the users of said elevator.
  • the standard mandates the presence of an electromechanical brake that acts automatically if mains power fails or if the power supply of the control circuit fails.
  • the aim of the present invention is to obviate the cited drawbacks and to meet the above-cited requirements, by providing a drive for elevators and goods hoists that can adopt commercial toothed belts, is provided with means suitable to maintain continuous mutual meshing of the belt and the pinion, and is provided with an element that is suitable to ensure the mutual slipping of the belts and the car when said car is stuck.
  • the drive according to the invention can be connected to the car and to the counterweight by arranging the belts in a single or multiple tackle configuration in order to reduce the stress to which the motor is subjected.
  • an object of the present invention is to provide a drive that is simple, relatively easy to provide in practice, safe in use, effective in operation, and has a relatively low cost.
  • the present drive for elevators and goods hoists of the type that comprises a shaft inside which a car and a counterweight are guided so that they can slide parallel to each other in opposite directions, said car and said counterweight being connected by at least one toothed belt, which is functionally associated with a motor unit, characterized in that said toothed belt is of the commercial type and in that said motor unit has a torque limiting coupling interposed between the motor unit and a meshing pinion of said belt.
  • the reference numeral 1 generally designates a drive for elevators and goods hoists.
  • the elevator is constituted by a car 2 and a counterweight 3, which are connected respectively by toothed belts 4 (which are rigidly coupled on the upper surface thereof directly or by way of elastic means, such as helical springs), suitably guided by guiding sheaves 5, which are fixed on the upper or lateral surfaces of the installation shaft.
  • the toothed belts 4 are substantially commercial belts with characteristics of high tensile strength and low deformation when loaded.
  • the belts 4 be made of (or sheathed with) wear-resistant material, in order to ensure maximum safety, require limited maintenance and provide maximum quietness in operation.
  • the toothed belts 4 indeed because they are of a commercial type and therefore are built to ensure the most compact possible matings, can advantageously be mated with driving pinions that have a small diameter (minimum diameter compatible with the type of belt even smaller than 50 mm) in order to transmit the required torque, ensuring reduced dimensions of the entire drive 1.
  • a motor unit 6 is mounted in a fixed manner (for example, in the example of Figure 1, in an upper region in the installation shaft), and a torque limiting coupling 8, a pinion 9 for the meshing of the teeth of the belts 4, and a brake 10 are keyed on its motor shaft 7.
  • the torque limiting coupling 8 prevents, when the car 2 and the counterweight 3 are already in an end-of-travel configuration (for example, the car 2 is at the top floor or not at the level of the floor, toward the top of the shaft, and the counterweight 3 rests on the bottom of the shaft), the motor 6 from continuing to provide driving torque to the belts 4, possibly damaging them (excessive stretching of the fibers), and worse still, making the car slam against the ceiling of the shaft.
  • the coupling 8 is set so as to avoid its intervention during acceleration of the loaded ascending car.
  • the pinion 9 has a set of the teeth that is complementary to the set of teeth of the belts 4, and is surrounded by a snug housing 9a, the internal surface of which is proximate to the surface of the back of the belts 4, thus keeping them correctly engaged in the pinion 9, preventing their escape, this precaution being necessary to avoid fleeting in case of slackening, as prescribed by the standard.
  • This function might be obtained with any other component suitable for the purpose, such as for example a sliding block whose surface rests on the back of the belt 4 proximate to the portion where the belt 4 meshes with the pinion 9, or a plurality of rollers that are mounted freely in the same position and are designed to keep the belt 4 and the pinion 9 mutually engaged.
  • the brake 10 can be of any kind and is designed to ensure the stable parking of the car at a given floor (in the examples shown in the figures, the brake comprises a disk 11 that is rigidly coupled to the shaft 7 and on which it is possible to close respective calipers 12).
  • the brake 10 thus complies with the characteristics listed in the standard in relation to the electromechanical brake: it acts in fact automatically if mains power fails or if the control circuit power supply fails.
  • the brake in order to comply with the standards, the brake must be capable on its own of stopping the system while the car is descending at nominal speed and with its capacity plus 25%.
  • the assembly constituted by the motor 6, the coupling 8, the pinion 9 and the brake 10 can be installed in an upper region (as shown in Figures 1, 6, 11, 13, 15 and 16), in a lower region (as shown in Figures 2, 7, 12, 14, 17 and 18), or laterally within appropriate compartments provided along the lateral surface of the shaft at various heights (as shown in Figures 3, 4, 5, 8, 9, 10, 19, 20, 21 and 22). In any case, the assembly must be in an accessible position in order to ensure correct system maintenance.
  • the belts 4 can be fixed directly to the upper surface of the car 2 and of the counterweight 3 (as shown in Figures 1, 2, 3, 4, 5, 11, 12, 13 and 14) or can be guided by means of appropriately provided sheaves 5 mounted on the upper surface of the car 2 and of the counterweight 3 so as to constitute a tackle, in practice reducing the stress to which the motor 6 is subjected (as shown in Figures 6, 7, 8, 9, 10, 15, 16, 17, 18, 19, 20, 21 and 22).
  • the toothed belts 4 in fact merely perform traction, while cables 13 (for example) support the considerable loads of the car 2, the counterweight 3, and the payload.
  • the supporting elements can be conventional cables 13 (as shown in Figures 11 to 22), flat belts, toothed belts, or other elements providing great tensile strength and low noise.
  • the cables 13 also can be coupled directly to the upper surface of the car 2 and of the counterweight 3 (as shown in Figures 11, 12, 15, 17, 19 and 21), or can be guided by appropriately provided sheaves 14 mounted on the upper surface of the car 2 and of the counterweight 3, so as to constitute a tackle (as shown in Figures 13, 14, 16, 18, 20 and 22).
  • load-bearing cables 13 wear less than in a conventional system, since they work on guiding sheaves 14 with races that have a semicircular profile without a notch: since they are not crimped within the races, they are less subject to wear.
  • Each individual characteristic of the installation configuration related to the position of the motor 6, to the fixing of the belts 4 (provided directly or by means of a spring or by means of a sheave 5), to the fixing of the cables 13 (provided directly or by means of a sheave 14), can be combined with any other characteristic to provide a drive 1 for elevators and goods hoists according to the invention.
  • the belts 4 are toothed and have a constant pitch, for each turn of the motor shaft 7 the car 2 covers a very specific and exact extent of its travel, and therefore the use of an encoder (or of another similar device that measures precisely the turns made by the shaft) allows to establish precisely the position of the car 2 by means of the control panel, eliminating the position transducers (known as shaft switches) that are traditionally arranged in the travel shaft.
  • the shaft switches are installed only at the top and bottom floors.
  • the retention brackets 15 of the cables 13, shown laterally adjacent to the car 2 and to the counterweight 3 proximate to their lower end, can be arranged in any position of the lateral surface to which they will be fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP04015126A 2003-07-03 2004-06-28 Moteur pour ascenseur et monte-charge Withdrawn EP1493708A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20030413 ITBO20030413A1 (it) 2003-07-03 2003-07-03 Unita' di movimentazione per ascensori e montacarichi.
ITBO20030413 2003-07-03

Publications (2)

Publication Number Publication Date
EP1493708A2 true EP1493708A2 (fr) 2005-01-05
EP1493708A3 EP1493708A3 (fr) 2006-08-23

Family

ID=33428299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04015126A Withdrawn EP1493708A3 (fr) 2003-07-03 2004-06-28 Moteur pour ascenseur et monte-charge

Country Status (2)

Country Link
EP (1) EP1493708A3 (fr)
IT (1) ITBO20030413A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612179A1 (fr) * 2004-06-24 2006-01-04 Alberto Sassi S.P.A Entraînement pour ascenseurs et montecharges
EP2322463A1 (fr) 2009-11-12 2011-05-18 Inventio AG Installation d'ascenseur
EP2567924A1 (fr) * 2011-09-07 2013-03-13 Thyssenkrupp Elevator Manufacturing Spain S.L. Ascenseur sans contrepoids avec une courroie crantée et une poulie
EP2567925A1 (fr) * 2011-09-07 2013-03-13 Thyssenkrupp Elevator Manufacturing Spain S.L. Ascenseur avec courroie crantée et poulie et avec contrepoids
EP2574584A1 (fr) * 2011-09-30 2013-04-03 Inventio AG Entraînement à frottement pour ascenseur et procédé de fonctionnement
EP2703330A1 (fr) * 2012-08-31 2014-03-05 Kone Corporation Ascenseur
CN103917474A (zh) * 2011-11-13 2014-07-09 通力股份公司 电梯***
EP2789562A1 (fr) * 2013-04-10 2014-10-15 Kone Corporation Accouplement limiteur de couple pour machine de levage
US9546076B2 (en) 2011-09-15 2017-01-17 Kone Corporation Suspension arrangement and guide shoe arrangement for an elevator
US9643817B2 (en) 2011-05-18 2017-05-09 Kone Corporation Elevator arrangement
US9758346B2 (en) 2011-06-22 2017-09-12 Kone Corporation Tensioning arrangement for a traction means of an elevator
US9957135B2 (en) 2012-01-25 2018-05-01 Kone Corporation Elevator
CN108116966A (zh) * 2018-01-31 2018-06-05 三洋电梯(珠海)有限公司 螺旋升降电梯

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE359523C (de) * 1922-09-23 Otto Hegemann Sicherung gegen UEbertreiben des Foerderkorbes
GB864182A (en) * 1958-06-14 1961-03-29 Loire Atel Forges Improvement in lifting installations
WO2003043927A2 (fr) * 2001-11-23 2003-05-30 Inventio Ag Ascenseur comprenant un moyen de transmission de type courroie, notamment une courroie dentee, en tant que moyen de support ou moyen d'entrainement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE359523C (de) * 1922-09-23 Otto Hegemann Sicherung gegen UEbertreiben des Foerderkorbes
GB864182A (en) * 1958-06-14 1961-03-29 Loire Atel Forges Improvement in lifting installations
WO2003043927A2 (fr) * 2001-11-23 2003-05-30 Inventio Ag Ascenseur comprenant un moyen de transmission de type courroie, notamment une courroie dentee, en tant que moyen de support ou moyen d'entrainement

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612179A1 (fr) * 2004-06-24 2006-01-04 Alberto Sassi S.P.A Entraînement pour ascenseurs et montecharges
CN102695663B (zh) * 2009-11-12 2014-08-27 因温特奥股份公司 升降机***及其操作方法以及其控制器的初始化方法
EP2322463A1 (fr) 2009-11-12 2011-05-18 Inventio AG Installation d'ascenseur
WO2011057890A1 (fr) 2009-11-12 2011-05-19 Inventio Ag Installation d'ascenseur
CN102695663A (zh) * 2009-11-12 2012-09-26 因温特奥股份公司 升降机***
US9266699B2 (en) 2009-11-12 2016-02-23 Inventio Ag Elevator system and operation thereof
US9643817B2 (en) 2011-05-18 2017-05-09 Kone Corporation Elevator arrangement
US9758346B2 (en) 2011-06-22 2017-09-12 Kone Corporation Tensioning arrangement for a traction means of an elevator
EP2567924A1 (fr) * 2011-09-07 2013-03-13 Thyssenkrupp Elevator Manufacturing Spain S.L. Ascenseur sans contrepoids avec une courroie crantée et une poulie
EP2567925A1 (fr) * 2011-09-07 2013-03-13 Thyssenkrupp Elevator Manufacturing Spain S.L. Ascenseur avec courroie crantée et poulie et avec contrepoids
US9546076B2 (en) 2011-09-15 2017-01-17 Kone Corporation Suspension arrangement and guide shoe arrangement for an elevator
EP2574584A1 (fr) * 2011-09-30 2013-04-03 Inventio AG Entraînement à frottement pour ascenseur et procédé de fonctionnement
CN103917474A (zh) * 2011-11-13 2014-07-09 通力股份公司 电梯***
EP2776355A4 (fr) * 2011-11-13 2015-06-24 Kone Corp Système d'ascenseur
US9957135B2 (en) 2012-01-25 2018-05-01 Kone Corporation Elevator
EP2703330A1 (fr) * 2012-08-31 2014-03-05 Kone Corporation Ascenseur
EP2789562A1 (fr) * 2013-04-10 2014-10-15 Kone Corporation Accouplement limiteur de couple pour machine de levage
CN108116966A (zh) * 2018-01-31 2018-06-05 三洋电梯(珠海)有限公司 螺旋升降电梯

Also Published As

Publication number Publication date
EP1493708A3 (fr) 2006-08-23
ITBO20030413A1 (it) 2005-01-04

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