EP2199245A1 - Treuil d' ascenseur - Google Patents

Treuil d' ascenseur Download PDF

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Publication number
EP2199245A1
EP2199245A1 EP08425810A EP08425810A EP2199245A1 EP 2199245 A1 EP2199245 A1 EP 2199245A1 EP 08425810 A EP08425810 A EP 08425810A EP 08425810 A EP08425810 A EP 08425810A EP 2199245 A1 EP2199245 A1 EP 2199245A1
Authority
EP
European Patent Office
Prior art keywords
drive
belt
pinion
car
teeth
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Withdrawn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
EP08425810A
Other languages
German (de)
English (en)
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
Priority to EP08425810A priority Critical patent/EP2199245A1/fr
Publication of EP2199245A1 publication Critical patent/EP2199245A1/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Withdrawn legal-status Critical Current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
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/062—Belts
    • 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 goods hoists and elevators.
  • Goods hoists and elevators currently have a car whose dimensions can vary according to the installation environment and according to the operating requirements.
  • the car is provided externally with appropriately provided elements that are adapted to act as a safety if the elements that support it become damaged or even break.
  • the elements designed to move and support the car can be of the hydraulic type or of the cable type.
  • the car is moved with a vertical translational motion within an appropriately provided compartment, which is made of masonry or other structural material, inside or outside the installation building, by means of cables, by a motor drive.
  • the weight of the car, and part of the load can be balanced by means of the presence of appropriately provided counterweights: these counterweights are connected to the car by means of one or more metal cables (the same ones used for traction), engaged in appropriately provided pulleys, so that the car and the counterweight slide within the compartment with mutually parallel orientations but with opposite directions.
  • the advantage is that the motor drive is required only to provide the energy needed to move part of the load.
  • the cables used are normally cables made of metal or of other materials having excellent mechanical qualities (composite fibers based on Kevlar, carbon or other synthetic materials).
  • the cables connected to the motor drive and designed for movement require pulleys whose groove adapted to accommodate them is shaped substantially so as to clamp them, ensuring a good grip of the pulley connected to the shaft of the motor drive on the cable.
  • This type of mating between the cable and the pulley leads to continuous abrasion of the surface of the cable, which for this reason requires periodic maintenance and replacements.
  • the pinions and pulleys adopted in this embodiment generally have large diameters; this prevents the toothed belt from being subjected to deformations that can cause deterioration thereof.
  • the aim of the present invention is to obviate the above-mentioned drawbacks and meet the mentioned requirements, by providing a drive for goods hoists and elevators with minimal energy consumption on the part of the motor drive even during accelerations and decelerations of the car.
  • an object of the present invention is to provide a drive for goods hoists and elevators that can adopt pulleys and pinions having a reduced diameter, with consequent minimal space occupation of the driving unit, and for which the phenomenon of abrasion of the drive elements is extremely reduced.
  • Another 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 of relatively low costs.
  • the present drive for goods hoists and elevators of the type that comprises a compartment within which a car and a counterweight are guided so that they can slide in a parallel arrangement in opposite directions, said drive comprising a motor drive, characterized in that said motor drive comprises a pinion that is provided with a suitable set of teeth, whose diameter does not exceed 65 mm, and is functionally associated with a respective toothed belt; the reduced diameter of the pinion determines a reduction of the mass and moment of inertia of the motor drive, as a consequence of the need for a low driving and/or braking torque with respect to the performance of the system in which it works.
  • the reference numeral 1 generally designates a drive for goods hoists and elevators 2.
  • the goods hoists and/or elevators 2 that can be provided with the drive 1 according to the invention comprise a compartment in which a car 3 and a counterweight 4 can slide with a mutually parallel arrangement but in opposite directions.
  • the mutual movement of the car 3 and of the counterweight 4 is achieved by way of the driving action of an appropriate motor drive 5; this is generally a single-phase or multiple-phase electric motor, depending on the power required to move the car 3 and the counterweight 4.
  • the motor drive 5 comprises a pinion 6 which is provided with an appropriate set of teeth 8: the pinion 6 has a diameter of no more than 65 mm.
  • the pinion 6 is functionally associated with a respective toothed belt 7, which is entrusted with the task of moving by traction the car 3 and the counterweight 4.
  • the reduced diameter of the pinion 6 determines a reduction of the driving and/or braking torque and therefore of the mass and moment of inertia of the motor drive 5.
  • the reduction of the driving torque does not entail a reduction in the performance required of the motor drive 5 by the system indeed by virtue of the extremely reduced diameter of the pinion 6.
  • the set of teeth 8 of the pinion 6 is shaped so as to optimize the dynamic mating with a complementary set of teeth 9 of the belt 7.
  • the profiles of the set of teeth 8 and of the set of teeth 9 are contoured in order to reduce frictions and interferences during the movement of the belt 7 and the pinion 6, with consequent increase in efficiency (minimum power absorption) and quietness of meshing.
  • the set of teeth 8 of the pinion 6 has a reduced tooth height.
  • the belt 7 comprises a plurality of longitudinal reinforcement fibers 7a, which are made of flexible material with high tensile strength. These fibers, embedded in the material that constitutes their cohesive matrix, can be: polymeric fibers, textile fibers, glass fibers, carbon fibers, metallic fibers, natural fibers, combinations thereof and equivalents thereof.
  • the belt 7 has good flexibility in both directions of flexing.
  • the drive 1 comprises suitable guiding pulleys 10 for the belt 7: the pulleys 10 must have the smallest possible diameter as a function of the aptness of the belt 7 to bear more or less important flexing.
  • the pulleys 10 can have diameters even on the order of the diameter of the pinion 6, and therefore a particularly low mass and moment of inertia. If the belt 7 has optimum mechanical behavior and tolerance to flexing, the use of extremely reduced diameters for the pinion 6 and the pulleys 10, even much smaller than the upper limit diameter of the pinion 6 (which corresponds to 65 mm), is not ruled out.
  • the unit 1 can be installed in goods hoists and elevators 2 according to a plurality of different assembly configurations, all of which are within the scope of the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
EP08425810A 2008-12-22 2008-12-22 Treuil d' ascenseur Withdrawn EP2199245A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08425810A EP2199245A1 (fr) 2008-12-22 2008-12-22 Treuil d' ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08425810A EP2199245A1 (fr) 2008-12-22 2008-12-22 Treuil d' ascenseur

Publications (1)

Publication Number Publication Date
EP2199245A1 true EP2199245A1 (fr) 2010-06-23

Family

ID=40532952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08425810A Withdrawn EP2199245A1 (fr) 2008-12-22 2008-12-22 Treuil d' ascenseur

Country Status (1)

Country Link
EP (1) EP2199245A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8157058B2 (en) * 2001-11-23 2012-04-17 Inventio Ag Elevator with belt-like transmission means, particularly with wedge-ribbed belt, as support means and/or drive means
EP2990370A1 (fr) * 2014-09-01 2016-03-02 Kone Corporation Élévateur
CN112499535A (zh) * 2020-11-30 2021-03-16 刘永涛 一种具有自我保护功能的可移动升降机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050115799A1 (en) 2003-12-01 2005-06-02 Ernst Ach Elevator system
DE102004047158A1 (de) * 2004-09-29 2006-03-30 Contitech Antriebssysteme Gmbh Aufzugssystem mit riemenartigem Übertragungsmittel als Tragmittel und/oder Treibmittel
US20070093334A1 (en) * 2005-10-21 2007-04-26 Inventio Ag Support Means System with Drive Pulley and Support Means as well as Elevator Installation with such a Support Means System

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050115799A1 (en) 2003-12-01 2005-06-02 Ernst Ach Elevator system
DE102004047158A1 (de) * 2004-09-29 2006-03-30 Contitech Antriebssysteme Gmbh Aufzugssystem mit riemenartigem Übertragungsmittel als Tragmittel und/oder Treibmittel
US20070093334A1 (en) * 2005-10-21 2007-04-26 Inventio Ag Support Means System with Drive Pulley and Support Means as well as Elevator Installation with such a Support Means System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8157058B2 (en) * 2001-11-23 2012-04-17 Inventio Ag Elevator with belt-like transmission means, particularly with wedge-ribbed belt, as support means and/or drive means
US8210320B2 (en) * 2001-11-23 2012-07-03 Inventio Ag Elevator with belt-like transmission means, particularly with wedge-ribbed belt, as support means and/or drive means
EP2990370A1 (fr) * 2014-09-01 2016-03-02 Kone Corporation Élévateur
CN105384036A (zh) * 2014-09-01 2016-03-09 通力股份公司 电梯
CN112499535A (zh) * 2020-11-30 2021-03-16 刘永涛 一种具有自我保护功能的可移动升降机

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