EP4389669A1 - Moyen de suspension pour ascenseur à poulie de traction - Google Patents

Moyen de suspension pour ascenseur à poulie de traction Download PDF

Info

Publication number
EP4389669A1
EP4389669A1 EP22216075.6A EP22216075A EP4389669A1 EP 4389669 A1 EP4389669 A1 EP 4389669A1 EP 22216075 A EP22216075 A EP 22216075A EP 4389669 A1 EP4389669 A1 EP 4389669A1
Authority
EP
European Patent Office
Prior art keywords
strands
traction means
traction
belt
suspension means
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.)
Pending
Application number
EP22216075.6A
Other languages
German (de)
English (en)
Inventor
Mesut SELEK
Baris ERGEN
Oguzhan Yildiz
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.)
Wittur Holding GmbH
Original Assignee
Wittur Holding GmbH
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 Wittur Holding GmbH filed Critical Wittur Holding GmbH
Priority to EP22216075.6A priority Critical patent/EP4389669A1/fr
Priority to CN202311787525.XA priority patent/CN117509353A/zh
Publication of EP4389669A1 publication Critical patent/EP4389669A1/fr
Pending legal-status Critical Current

Links

Images

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
    • 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
    • B66B11/0476—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with friction gear, e.g. belt linking motor to sheave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • B66B7/022—Guideways; Guides with a special shape

Definitions

  • the invention relates to a suspension means for a traction sheave elevator according to the generic term of claim 1 as well as the use of such a suspension means according to the generic term of claim 6 and a suspension means elevator with such a suspension means according to the generic term of claim 7.
  • Lifting and lowering of the elevator car along the elevator shaft is typically accomplished by means of driven suspension means such as ropes or belts - especially when large differences in height have to be overcome.
  • driven suspension means such as ropes or belts - especially when large differences in height have to be overcome.
  • the suspension means is usually deflected several times with the aid of deflection pulleys in accordance with the principles of a pulley block. This allows the use of small, high-speed drive motors, which are much easier to integrate into the elevator shaft.
  • Flat belts usually have a rectangular cross-section.
  • one of the two long sides of the rectangular cross-section runs along the deflection pulleys and/or the traction sheave, so that the pulleys roll along this side of the suspension means.
  • the two short sides of the cross-section which are perpendicular to the long sides, are typically much shorter than the diameter of steel cables used as suspension means instead of flat belts.
  • flat belts are typically not, or at least not predominantly, made of steel, as is the case with cables used as suspension means. Instead, flat belts are usually made at least predominantly of polyurethane plastic. These two circumstances mean that flat belts are significantly more flexible than steel cords in the direction of rotation of the deflection pulleys or traction sheaves.
  • Figs. 1 and 2 show such a deflection pulley 4 (or traction sheave 4) known from the prior art together with a flat belt 1 running on it.
  • the belt running surface 5 is convexly curved.
  • the flat belt 1 Due to the traction means strands 2 arranged in the belt base material 3, which are here designed as steel cords and are therefore relatively inelastic compared to the belt base material, the flat belt 1 exhibits a certain rigidity. This has the effect that the flat belt 1 does not rest on the convex belt running surface 5 over its entire width running in the direction orthogonal to the flanks 6 of the deflection pulley 4. This in turn has the consequence that the tensile forces exerted by the deflection pulleys 4 on the flat belt 1 do not result in a constant tension curve along the width of the flat belt 1.
  • the steel cords 2 provided for absorbing the tensile forces in the flat belt 1 are therefore subjected to different loads.
  • the steel cords 2 in the area of the center are subjected to maximum tensile stress, while the outer steel cords 2 are subjected to much lower stress.
  • the entire flat belt 1 must be replaced. Accordingly, the problem described leads to a relatively short service life of the flat belt. It would be conceivable in principle to make the flat belts in the center area of the belt base material 3 thicker or of a different material than the steel cords 2 in the edge area. However, this would lead to a significant increase in the cost of manufacturing the flat belts.
  • the solution to the above problem is provided by a suspension means elevator with a suspension means according to the invention, from which the car is suspended and raised or lowered.
  • the suspension means elevator comprises a deflection pulley designed as a traction sheave, and preferably at least one further deflection pulley.
  • the elevator is characterized in that at least one deflection pulley contacts the suspension means with its convex jacket.
  • the jacket of the deflection pulley has a curvature which is designed in such a way that traction means strands enclosed near the flank in the flat belt tend to be less heavily loaded than traction means strands enclosed centrally or near the center.
  • the car is "suspended" from the suspension means can mean both that the suspension means is rigidly connected to the car at one end, i.e. the car is literally suspended from the suspension means.
  • at least one deflection pulley is attached to the elevator car, which rolls along a loop formed by the suspension means.
  • the car is attached to the suspension means in such a way that driving the suspension means by means of a traction sheave raises or lowers the car.
  • a suspension means does not mean a single suspension means, but preferably four suspension means in the form of flat belts arranged parallel to each other and either flank to flank or at least close to each other.
  • the word “a” is therefore not used as a number word, but as an indefinite article.
  • the three central traction means strands form two traction means strand pairs. These two pairs of traction means strands are spaced less apart than all other pairs of traction means strands.
  • one of the traction means strands is arranged exactly in the center of the flat belt and the other two traction means strands are arranged symmetrically to the left and right of the first traction means strand.
  • the traction means strands are at least partially ropes and preferably metal ropes. More preferably, the traction means strands are predominantly ropes and preferably metal ropes. Ideally, the traction means strands are even completely ropes and preferably metal ropes.
  • the individual steel wire strands are each braided together to form a steel rope. It is also conceivable that different types of wires are used in one rope, thus combining the advantages of different materials. In this way, the required tensile strength of the traction means strands can be ensured while at the same time achieving sufficient flexibility.
  • the at least one deflection pulley and the suspension means assigned to it are matched to each other in such a way that the stress difference that occurs when the suspension means circulates over the at least one deflection pulley between the central traction means strand or strands and each of the two traction means strands closest to the flank is less than 35%. It is better if the tension difference is less than 25%.
  • the design of the suspension means or the traction means strands must be based on the traction means strands subjected to the highest loads. If the traction means strands in the center area (at B/2) of the flat belt are no longer loaded many times more than the traction means strands in the edge area, the less heavily loaded traction means strands no longer have to be so heavily oversized. This has a positive effect on the manufacturing costs of the suspension means.
  • the at least one deflection pulley has a belt running surface on its jacket that is wider than the width of the suspension means.
  • Fig. 3 shows a cross-section of a flat belt 1, which clearly illustrates its structure.
  • the flat belt 1 consists of a belt base material 3 and six traction means strands 2 arranged inside the belt base material 3.
  • the traction means strands 2 are steel cords with a round cross-section.
  • the belt base material 3 is polyurethane with a rectangular cross-section. While the traction means strands 2 serve to absorb the tensile stresses occurring during operation of the flat belt 1, the belt base material 3 serves to ensure sufficient static friction between the deflection pulleys 4 and the flat belt 1, or the drive pulley and the flat belt 1.
  • the diameter of the individual traction means strands 2 is approximately 60% of the thickness D of the belt base material 3, which corresponds to the short side of the rectangular cross-section of the belt base material 3.
  • the traction means strands 2 are not arranged uniformly over the width B of the flat belt 1 corresponding to the long side of the belt base material 3. It is true that the traction means strands 2 are arranged mirror-symmetrically in relation to an imaginary plane running through half the width B of the belt base material 3. However, the distances between the individual traction means strands 2 increase starting from the traction means strands 2 arranged in the center of the belt base material 3 to the traction means strands 2 arranged at the edge of the belt base material 3. The distance between the two central traction means strands 2 is less than their respective radius.
  • the longitudinal axes of the individual traction means strands 2 all lie on an imaginary line running through half the thickness D of the belt base material 3 and orthogonal to the short sides of the belt base material 3.
  • a relatively uniform stress distribution is achieved on the individual traction means strands 2.
  • This is illustrated by Fig. 4 .
  • the flat belt 1 can be seen together with a deflection pulley 4.
  • the flat belt 1 is in contact with the belt running surface 5 of the deflection pulley 4 in such a way that a movement of the flat belt 1 in the circumferential direction of the deflection pulley 4 leads to a rotational movement of the deflection pulley 4.
  • the flat belt 1 is centered on the deflection pulley 4.
  • the belt running surface 5 is convexly curved.
  • the flat belt 1 can then be mounted on the deflection pulley 4 in such a way that the apex of the convex curvature of the belt running surface 5 lies exactly below the center of the flat belt 1. Then the symmetrical structure of the flat belt 1 in combination with the tensile forces acting on the flat belt 1 during operation ensures the required centering. Due to the relatively large distance between the traction means strands 2 in the edge area of the flat belt 1, it is ensured on the one hand that the flat belt 1 is less stiff and lies better against the convex curved belt running surface 5.
  • the small distance between the traction means strands 2 in the central area of the flat belt 1 ensures that the maximum tensile stresses occurring in this area are distributed over as many traction means strands 2 as possible. Since there are fewer traction means strands 2 in the edge area of the flat belt 1, but the tensile stresses are also lower, the individual traction means strands 2 of the flat belt 1 are subjected to a much more uniform load overall.
  • the tensile stresses acting on the individual traction means strands 2 are illustrated schematically by the arrows in Fig. 4 .
  • the structure of an individual traction means strand 2 can be understood from Fig. 5 . This shows that the individual traction means strands 2 are not made of solid material but are formed by a large number of thin steel wires 7 which are interwoven with one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
EP22216075.6A 2022-12-22 2022-12-22 Moyen de suspension pour ascenseur à poulie de traction Pending EP4389669A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22216075.6A EP4389669A1 (fr) 2022-12-22 2022-12-22 Moyen de suspension pour ascenseur à poulie de traction
CN202311787525.XA CN117509353A (zh) 2022-12-22 2023-12-22 用于曳引轮电梯的悬挂装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22216075.6A EP4389669A1 (fr) 2022-12-22 2022-12-22 Moyen de suspension pour ascenseur à poulie de traction

Publications (1)

Publication Number Publication Date
EP4389669A1 true EP4389669A1 (fr) 2024-06-26

Family

ID=84568805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22216075.6A Pending EP4389669A1 (fr) 2022-12-22 2022-12-22 Moyen de suspension pour ascenseur à poulie de traction

Country Status (2)

Country Link
EP (1) EP4389669A1 (fr)
CN (1) CN117509353A (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03176912A (ja) * 1989-12-05 1991-07-31 Hitachi Cable Ltd 平形エレベータケーブル
WO2006057641A2 (fr) * 2004-11-24 2006-06-01 Otis Elevator Company Configuration d'articulation pour ensemble porteur
WO2022044213A1 (fr) * 2020-08-27 2022-03-03 三菱電機株式会社 Courroie, son procédé de production et ascenseur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03176912A (ja) * 1989-12-05 1991-07-31 Hitachi Cable Ltd 平形エレベータケーブル
WO2006057641A2 (fr) * 2004-11-24 2006-06-01 Otis Elevator Company Configuration d'articulation pour ensemble porteur
WO2022044213A1 (fr) * 2020-08-27 2022-03-03 三菱電機株式会社 Courroie, son procédé de production et ascenseur

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199137, Derwent World Patents Index; AN 1991-269935 *
DATABASE WPI Week 2022002, Derwent World Patents Index; AN 2022-39679T *

Also Published As

Publication number Publication date
CN117509353A (zh) 2024-02-06

Similar Documents

Publication Publication Date Title
JP4896738B2 (ja) エレベータ設備
KR100607631B1 (ko) 엘리베이터용 인장부재
US3279762A (en) Noise abating and traction improving elevator sheave
JP5129428B2 (ja) エレベータシステム
KR100921360B1 (ko) 견인 요소로서 평벨트를 포함하는 승강기
EP1153167B2 (fr) Element de tension pour ascenseur
US9352935B2 (en) Tension member for an elevator
JP5519607B2 (ja) エレベータ用の引張り部材
JP2000192377A (ja) 合成繊維ロ―プ
US11820628B2 (en) Elevator system comprising deflecting elements having different groove geometries
EP1582493B1 (fr) Cable pour ascenseur et equipement d'ascenseur
EP4389669A1 (fr) Moyen de suspension pour ascenseur à poulie de traction
KR100702759B1 (ko) 비 자전 와이어 로프
EP3738915B1 (fr) Treuil koepe
EP4389671A1 (fr) Moyen de suspension pour ascenseur à poulie de traction
US8939261B2 (en) Support element system for elevators
EP4389670A1 (fr) Moyen de suspension pour ascenseur à poulie de traction
ES2502843T3 (es) Sistema de ascensor que tiene el motor de accionamiento situado en la parte inferior del hueco del ascensor
CN117509354A (zh) 用于曳引轮电梯的悬挂装置
CN117509355A (zh) 用于曳引轮电梯的悬挂装置
RU2230143C2 (ru) Подъёмная система, используемый в ней работающий на растяжение элемент и его применение для передачи направленного вверх усилия к кабине подъёмной системы

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR