EP1213251B1 - Elevator with driving belt - Google Patents

Elevator with driving belt Download PDF

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Publication number
EP1213251B1
EP1213251B1 EP01490050A EP01490050A EP1213251B1 EP 1213251 B1 EP1213251 B1 EP 1213251B1 EP 01490050 A EP01490050 A EP 01490050A EP 01490050 A EP01490050 A EP 01490050A EP 1213251 B1 EP1213251 B1 EP 1213251B1
Authority
EP
European Patent Office
Prior art keywords
cabin
cable
guide
driving
lift according
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.)
Expired - Lifetime
Application number
EP01490050A
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German (de)
French (fr)
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EP1213251A1 (en
Inventor
Jean Evin
Bruno Delvosal
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.)
Autinor SA
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Autinor SA
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Publication of EP1213251A1 publication Critical patent/EP1213251A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable

Definitions

  • the invention relates to a cable elevator.
  • a cable elevator comprises an elevator car suspended on one of the two strands of a cable which, passed on a pulley overhanging the technical sheath in which the cabin is circulating, has its other strand which supports a counterweight.
  • the pulley is then locked in rotation on a shaft rotated by a motor placed at the end of the shaft.
  • the diameter of the pulley must be large so that the contact surface between the groove of the pulley and the cable is sufficient to prevent slipping of the cable into the groove of the pulley.
  • the counterweight develops a force opposite to that produced by the cab and therefore limits the load to be driven.
  • the load to be moved is then equal to the differential between the weight of the cabin with the passengers and the weight of the counterweight.
  • the motor torque that drives this pulley via the shaft depends on the load to be moved and, more specifically, the load differential but also the diameter of the pulley.
  • the motor torque must be relatively important.
  • a brake is positioned in particular for safety.
  • This space is usually called technical room or machinery.
  • the toothed wheels together with the racks, move and guide the cab.
  • the brake is then mounted on the motor drive shaft carried by the top of the cab.
  • Such a device is very noisy.
  • a training device is also known DE-A-3523187 consisting of pinching a wing of a profile using two wheels, one of which is driving.
  • the wheels are mounted so that they form the jaws of a clamp.
  • the invention proposes a solution for overcoming the aforementioned drawbacks.
  • the pulley is carried by a shaft located above the hopper.
  • the cab is usually guided in translation in the hopper. The same is true of the counterweight.
  • the cab is carried by a bracket-shaped support 100 commonly called arcade 100.
  • This arcade 100 laterally has two slides 101 cooperating with vertical guides 9.
  • the figure 2 shows a cross section showing the arcade, the slides 101 and the vertical guides 9 T-shaped.
  • the bottom of the cabin is thus close to the guide surface thus plating the leading strand of the means 6 of displacement of the cabin.
  • the width or cumulative width of the leading strands of the drive belts and the length of the driving strands determine the area in contact with the guide.
  • This surface in contact with the force applying the said leading strands on the guide partly determines the adhesion for driving the cabin.
  • the anchoring point of the cable of the cabin is offset relative to the vertical axis passing through the center G of gravity of the cabin so that is then exercised a vertical force P but also a force F oriented towards the vertical guide.
  • Such a cab drive device can reduce the size of the engine because the drive torque of the drive belt can be lower.
  • the moving means 6 is located under the cab.
  • the moving means is located above the roof of the cabin and is applied to the rear of the guide.
  • the safety brake (not shown) will be mounted on the shaft carrying the pulley.
  • the vertical guide on which the drive belt is based is at the rear of the cab or laterally.
  • the anchoring point 2 of the cable is offset relative to the guide axis and is between the vertical plane passing through the center of gravity and the bottom of the cabin.
  • an offset of the anchoring point beyond the guide axis accentuates this force.
  • the adhesion depends on the force F, but not on the materials constituting the bearing surface of the guide and the driving belt or belts.
  • Such a drive mechanism will be advantageously usable on elevator cabs that move in a hopper with an inclined axis, the force F then being greater.

Abstract

The lift comprises a cabin suspended by one (3A) of the two strands (3A,3B) of a cable (3) which passes over a pulley (4). The other strand supports a counterweight (5). The cabin displacement means (6) consists of the external surface (7A) of the driving strand of a driving belt (7) tensioned between two return pulleys (8) one of which is motorized. Anchoring of the cable at the top of the cabin induces a force (F) which applies the driving strand onto the external surface of a vertical guide.

Description

L'invention se rapporte a un ascenseur à câble.The invention relates to a cable elevator.

Classiquement, un ascenseur à câble comprend une cabine d'ascenseur suspendue à l'un des deux brins d'un câble qui, passé sur une poulie surplombant la gaine technique dans laquelle circule la cabine, a son autre brin qui soutient un contrepoids.Conventionally, a cable elevator comprises an elevator car suspended on one of the two strands of a cable which, passed on a pulley overhanging the technical sheath in which the cabin is circulating, has its other strand which supports a counterweight.

Pour être motrice, la poulie est alors calée en rotation sur un arbre entraîné en rotation par un moteur placé en bout d'arbre.To be driving, the pulley is then locked in rotation on a shaft rotated by a motor placed at the end of the shaft.

Pour obtenir une adhérence parfaite entre le câble et la poulie et éviter un glissement lors des arrêts et démarrages successifs de la cabine, le diamètre de la poulie doit être important de manière à ce que la surface de contact entre la gorge de la poulie et le câble soit suffisante pour éviter le glissement du câble dans la gorge de la poulie.To obtain perfect adhesion between the cable and the pulley and prevent slipping during successive stops and starts of the cab, the diameter of the pulley must be large so that the contact surface between the groove of the pulley and the cable is sufficient to prevent slipping of the cable into the groove of the pulley.

Pour réduire la force nécessaire à l'entraînement de la cabine, le contrepoids développe une force inverse à celle produite par la cabine et donc limite la charge à entraîner.To reduce the force required to drive the cab, the counterweight develops a force opposite to that produced by the cab and therefore limits the load to be driven.

La charge à déplacer est alors égale au différentiel entre le poids de la cabine avec les passagers et le poids du contrepoids.The load to be moved is then equal to the differential between the weight of the cabin with the passengers and the weight of the counterweight.

Le couple du moteur qui entraîne cette poulie via l'arbre dépend de la charge à déplacer et, plus précisément, du différentiel de charge mais, également, du diamètre de la poulie.The motor torque that drives this pulley via the shaft depends on the load to be moved and, more specifically, the load differential but also the diameter of the pulley.

Le couple moteur doit donc être relativement important.The motor torque must be relatively important.

Il faut donc faire appel à un moteur de forte puissance qui, par conséquent, présente un encombrement plus important que pour un moteur de puissance inférieure.It is therefore necessary to use a high power motor which, therefore, has a larger footprint than for a lower power engine.

Outre le moteur, sur l'arbre d'entraînement de la poulie motrice, on y positionne un frein notamment de sécurité.In addition to the motor, on the drive shaft of the drive pulley, a brake is positioned in particular for safety.

Ainsi, au dessus de la trémie dans laquelle se déplace la cabine d'ascenseur et son contrepoids, il est nécessaire de réserver un espace important pour y loger la poulie, l'arbre pourvu de ses paliers de guidage en rotation, le moteur et le frein.Thus, above the hopper in which the elevator car and its counterweight move, it is necessary to reserve a large space to accommodate the pulley, the shaft provided with its rotating guide bearings, the motor and the brake.

Cet espace est généralement appelé local technique ou machinerie.This space is usually called technical room or machinery.

L'espace occupé par ce local n'est pas commercialisable et, de ce fait, pénalise le coût de la construction.The space occupied by this room is not marketable and, therefore, penalizes the cost of construction.

Au lieu d'entraîner la cabine en agissant sur la poulie à laquelle est suspendue la machine, il est connu US-A-4.592.450 d'équiper la cabine d'au moins un moteur entraînant des roues dentées coopérant avec des crémaillères en Té.Instead of driving the cab by acting on the pulley on which the machine is suspended, it is known US Patent 4,592,450 equipping the cabin with at least one engine driving gear wheels cooperating with T-shaped racks.

Les roues dentées réalisent, avec les crémaillères, le déplacement et le guidage de la cabine.The toothed wheels, together with the racks, move and guide the cab.

Le frein est alors monté sur l'arbre d'entraînement du moteur porté par le haut de la cabine.The brake is then mounted on the motor drive shaft carried by the top of the cab.

Un tel dispositif est très bruyant.Such a device is very noisy.

On connaît également un dispositif d'entraînement DE-A-3.523.187 consistant à pincer une aile d'un profilé à l'aide de deux roues dont une est motrice.A training device is also known DE-A-3523187 consisting of pinching a wing of a profile using two wheels, one of which is driving.

Pour ce faire, les roues sont montées de telle sorte qu'elles forment les mâchoires d'une pince.To do this, the wheels are mounted so that they form the jaws of a clamp.

Un tel dispositif est complexe et malheureusement présente des problèmes d'adhérence.Such a device is complex and unfortunately has adhesion problems.

L'invention propose une solution pour remédier notamment aux inconvénients précités.The invention proposes a solution for overcoming the aforementioned drawbacks.

A cet effet, l'invention a pour objet un ascenseur à câble comprenant :

  • une cabine d'ascenseur suspendue à l'un des deux brins d'un câble qui, passé sur une poulie située en haut d'une trémie, a son autre brin qui soutient un contrepoids et
  • un moyen de déplacement de la cabine,
cet ascenseur étant caractérisé en ce que:
  • le moyen de déplacement de la cabine, porté par la dite cabine, est constitué par la face externe du brin menant d'au moins une courroie motrice tendue entre deux organes de renvoi dont au moins l'un des deux organes de renvoi est motorisé, cette courroie motrice prenant appui sur la face externe d'un guide vertical et
  • l'ancrage du câble, au moins indirectement, sur le haut de la cabine induit une force appliquant le brin menant précité sur la face externe du guide vertical.
For this purpose, the subject of the invention is a cable elevator comprising:
  • an elevator car suspended on one of the two strands of a cable which, passed on a pulley located at the top of a hopper, has its other strand which supports a counterweight and
  • a means of moving the cabin,
this elevator being characterized in that:
  • the means of movement of the cabin, carried by said cabin, is constituted by the outer face of the driving strand of at least one drive belt tensioned between two return members of which at least one of the two return members is motorized, this drive belt bearing on the outer face of a vertical guide and
  • anchoring the cable, at least indirectly, on the top of the cabin induces a force applying the aforementioned leading strand on the outer face of the vertical guide.

L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif en regard du dessin qui représente, schématiquement, une vue en coupe verticale d'un ascenseur .The invention will be better understood using the following description given by way of non-limiting example with reference to the drawing which shows, schematically, a vertical sectional view of an elevator.

En se reportant au dessin, on voit un ascenseur 1 se déplaçant dans une trémie.Referring to the drawing, we see an elevator 1 moving in a hopper.

Classiquement, l'ascenseur comprend :

  • une cabine 2 d'ascenseur suspendue à l'un 3A des deux brins 3A, 3B d'un câble 3 qui, passé sur une poulie 4 située en haut d'une trémie, a son autre brin 3B qui soutient un contrepoids 5 et
  • un moyen 6 de déplacement de la cabine.
Classically, the elevator includes:
  • a lift cabin 2 suspended at one of the 3A, 3B 3A, 3B of a cable 3 which, passed on a pulley 4 located at the top of a hopper, has its other strand 3B which supports a counterweight 5 and
  • a means 6 for moving the car.

La poulie est portée par un arbre situé au dessus de la trémie.The pulley is carried by a shaft located above the hopper.

Au lieu et place d'une seule poulie, on peut prévoir plusieurs poulies.Instead of a single pulley, several pulleys can be provided.

La cabine est généralement guidée en translation dans la trémie. Il en est de même du contrepoids.The cab is usually guided in translation in the hopper. The same is true of the counterweight.

Selon une caractéristique de l'invention :

  • le moyen 6 de déplacement de la cabine 2, porté par la dite cabine 2, est constitué par la face 7A externe du brin 12 menant d'au moins une courroie 7 motrice tendue entre deux organes 8 de renvoi dont au moins l'un des deux organes 8 de renvoi est motorisé cette courroie 7 motrice prenant appui sur la face 9A externe d'un guide 9 vertical et
  • l'ancrage 10 du câble, au moins indirectement, sur le haut de la cabine et son excentrage induit une force F appliquant le brin menant précité sur la face externe 9A du guide 9 vertical.
According to one characteristic of the invention:
  • the means 6 for moving the car 2, carried by said car 2, is constituted by the external face 7A of the strand 12 leading to at least one drive belt 7 stretched between two return members 8, at least one of which two return members 8 is motorized this drive belt 7 bearing on the outer face 9A of a vertical guide 9 and
  • the anchoring 10 of the cable, at least indirectly, on the top of the cabin and its offset causes a force F applying the aforementioned leading strand on the outer face 9A of the vertical guide 9.

La cabine est portée par un support 100 en forme de console appelé couramment arcade 100.The cab is carried by a bracket-shaped support 100 commonly called arcade 100.

Cette arcade 100 présente latéralement deux glissières 101 coopérant avec des guides 9 verticaux.This arcade 100 laterally has two slides 101 cooperating with vertical guides 9.

La figure 2 montre une coupe transversale faisant apparaître cette arcade, les glissières 101 et les guides verticaux 9 en forme de Té.The figure 2 shows a cross section showing the arcade, the slides 101 and the vertical guides 9 T-shaped.

Lorsque l'accrochage des câbles se situe dans le plan médian de l'arcade voire en un point situé à l'arrière de ce plan médian, on obtient un basculement A de la cabine et donc la création de la force F.When the attachment of the cables is in the median plane of the arcade or even at a point located at the rear of this median plane, we obtain a tilting A of the cabin and thus the creation of the force F.

Ce phénomène est plus visible sur la figure 3 où on a volontairement accentué le jeu et l'angle de pivotement.This phenomenon is more visible on the figure 3 where the play and the swivel angle have been voluntarily accentuated.

On voit que le galet 102 de guidage de la cabine s'appuie alors sur l'arrière de la surface de guidage de sorte que ce galet constitue le point de pivotement de la cabine.It can be seen that the car guide roller 102 then leans on the rear of the guide surface so that this roller constitutes the point of pivoting of the car.

Le bas de la cabine se rapproche donc de la surface de guidage plaquant ainsi le brin menant du moyen 6 de déplacement de la cabine.The bottom of the cabin is thus close to the guide surface thus plating the leading strand of the means 6 of displacement of the cabin.

Bien que n'apparaissant pas à la figure 1, on utilise deux moyens 6, chacun coopérant avec une surface de guidage.Although not appearing in the figure 1 two means 6 are used, each cooperating with a guide surface.

La largeur ou le cumul des largeurs des brins menants des courroies motrices ainsi que la longueur des brins menants détermine la surface en contact avec le guide.The width or cumulative width of the leading strands of the drive belts and the length of the driving strands determine the area in contact with the guide.

Cette surface en contact avec la force appliquant les dits brins menants sur le guide détermine pour partie l'adhérence pour l'entraînement de la cabine.This surface in contact with the force applying the said leading strands on the guide partly determines the adhesion for driving the cabin.

Doivent également être pris en compte les matériaux en appui l'un sur l'autre.Material must also be considered in support of each other.

Pour obtenir cette force F dite d'application du brin menant, le point 10 d'ancrage du câble de la cabine est décalé par rapport à l'axe vertical passant par le centre G de gravité de la cabine de sorte que s'exerce alors une force verticale P mais également une force F orientée vers le guide vertical.To obtain this force F said application of the driving strand, the anchoring point of the cable of the cabin is offset relative to the vertical axis passing through the center G of gravity of the cabin so that is then exercised a vertical force P but also a force F oriented towards the vertical guide.

Ainsi plus la cabine est chargée, plus la force F développée par le poids déporté de la cabine est importante .Thus, the more the cabin is loaded, the greater the force F developed by the remote weight of the cabin is important.

Cela a pour conséquence d'augmenter l'adhérence de la courroie motrice sur le guide vertical.This has the effect of increasing the adhesion of the drive belt on the vertical guide.

C'est là un aspect très intéressant.This is a very interesting aspect.

Un tel dispositif d'entraînement de la cabine permet de réduire la taille du moteur car le couple d'entraînement de la courroie motrice peut être plus faible.Such a cab drive device can reduce the size of the engine because the drive torque of the drive belt can be lower.

Dans une forme de réalisation, le moyen 6 de déplacement est localisé sous la cabine.In one embodiment, the moving means 6 is located under the cab.

Dans un autre forme de réalisation, le moyen de déplacement est situé au dessus du toit de la cabine et vient s'appliquer sur l'arrière du guide.In another embodiment, the moving means is located above the roof of the cabin and is applied to the rear of the guide.

C'est le galet du bas qui sert de point de pivotement.It is the bottom roller which serves as pivot point.

Le frein de sécurité (non représenté) sera monté sur l'arbre portant la poulie.The safety brake (not shown) will be mounted on the shaft carrying the pulley.

Ainsi, on sépare la fonction d'entraînement de la cabine des moyens de suspension de la dite cabine.Thus, the drive function of the cabin of the suspension means of said cabin is separated.

Avantageusement, le guide vertical sur lequel s'appuie la courroie d'entraînement se situe à l'arrière de la cabine ou latéralement.Advantageously, the vertical guide on which the drive belt is based is at the rear of the cab or laterally.

Comme on peut le voir sur la figure 3, il apparaît que le point 2 d'ancrage du câble est déporté par rapport à l'axe de guidage et se situe entre le plan vertical passant par le centre de gravité et le fond de la cabine.As can be seen on the figure 3 it appears that the anchoring point 2 of the cable is offset relative to the guide axis and is between the vertical plane passing through the center of gravity and the bottom of the cabin.

Du fait de cette position, le poids de la cabine est déplacé et produit donc une force orientée vers l'arrière de la cabine et donc vers le guide.Because of this position, the weight of the cabin is displaced and therefore produces a force directed towards the rear of the cabin and therefore towards the guide.

Avantageusement, un déport du point d'ancrage au delà de l'axe de guidage accentue cette force.Advantageously, an offset of the anchoring point beyond the guide axis accentuates this force.

Comme indiqué plus haut, l'adhérence dépend de la force F, mais éaglement des matériaux constituant la face d'appui du guide et de la ou les courroies motrices.As indicated above, the adhesion depends on the force F, but not on the materials constituting the bearing surface of the guide and the driving belt or belts.

Elle dépend également de l'état de surface.It also depends on the surface condition.

Par exemple, on peut utiliser une courroie dont la face en contact avec le guide est crantée.For example, one can use a belt whose face in contact with the guide is notched.

Un tel mécanisme d'entraînement sera avantageusement utilisable sur des cabines d'ascenseur qui se déplacent dans une trémie d'axe incliné, la force F étant alors plus importante.Such a drive mechanism will be advantageously usable on elevator cabs that move in a hopper with an inclined axis, the force F then being greater.

Claims (8)

  1. A cable lift comprising:
    - a lift cabin (2) suspended from one (3A) of the two strands (3A, 3B) of a cable (3) which, passed over a pulley (4) overhanging the cabin, has its other strand (3B) which supports a counterweight (5) and,
    - a means (6) for displacing the cabin,
    this cable lift being characterized in that:
    - the means (6) for displacing the cabin (2), borne by said cabin (2), is formed by the external face (7A) of the strand (12) leading from at least one driving belt (7) tensioned between two return members (8), at least one of the two return members (8) being motorized, this drive belt (7) bearing upon the external face (9A) of a vertical guide (9), and
    - the anchoring (10) of the cable on the top of the cabin induces a force (F) applying the aforementioned driving strand onto the external face (9A) of the vertical guide (9).
  2. The cable lift according to claim 1, characterized in that the anchoring point of the cable is offset relatively to the guiding axis of the cabin.
  3. The cable lift according to claim 1, characterized in that the width and/or accumulation of the widths of the driving strands (12) of the drive belts as well as the length of the driving strands (12) determine the surface area in contact with the guide.
  4. The cable lift according to claim 1, characterized in that the anchoring point (10) of the cable of the cabin is shifted relatively to the vertical axis passing through the centre (G) of gravity of the cabin so that a vertical force (P) but also a force (F) oriented towards the vertical guide are then exerted.
  5. The cable lift according to claim 1, characterized in that the displacement means (6) is localized under the cabin.
  6. The cable lift according to claim 1, characterized in that the displacement means is located above the roof of the cabin.
  7. The cable lift according to claim 1, characterized in that the vertical guide on which the drive belt is supported is located at the rear of the cabin or laterally.
  8. The cable lift according to claim 1, characterized in that the belt has its face, in contact with the guide, notched.
EP01490050A 2000-12-05 2001-12-05 Elevator with driving belt Expired - Lifetime EP1213251B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0015765A FR2817542B1 (en) 2000-12-05 2000-12-05 CABLE LIFTER
FR0015765 2000-12-05

Publications (2)

Publication Number Publication Date
EP1213251A1 EP1213251A1 (en) 2002-06-12
EP1213251B1 true EP1213251B1 (en) 2009-07-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01490050A Expired - Lifetime EP1213251B1 (en) 2000-12-05 2001-12-05 Elevator with driving belt

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EP (1) EP1213251B1 (en)
AT (1) ATE435832T1 (en)
DE (1) DE60139181D1 (en)
FR (1) FR2817542B1 (en)
PL (1) PL200002B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11390490B2 (en) * 2020-01-21 2022-07-19 Otis Elevator Company Cantilevered climbing elevator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1431738A (en) * 1965-01-15 1966-03-18 Bertin & Cie Method and device for driving by belts or other flexible bands
US3946836A (en) * 1974-11-25 1976-03-30 Maack Norris N Elevator system having co-moving and short-length annular-belt for suspending and propelling the carriage
DE3634061A1 (en) * 1986-10-07 1988-04-14 Ludwig Wenker Universal multi-purpose lift for travelling mainly vertically, encircling sectional girders of different cross-sections
DE3939762A1 (en) * 1989-12-01 1991-06-06 Boecker Albert Gmbh & Co Kg Person and material lift for building sites - in which internal power source and drives toothed belt engaging in vertical toothed poles forming guideway

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ATE435832T1 (en) 2009-07-15
DE60139181D1 (en) 2009-08-20
EP1213251A1 (en) 2002-06-12
FR2817542A1 (en) 2002-06-07
PL200002B1 (en) 2008-11-28
PL351051A1 (en) 2002-06-17
FR2817542B1 (en) 2003-03-21

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