WO2013041759A1 - Agencement d'éléments de traction mis en œuvre avec une structure de type courroie, ascenseur et utilisation d'éléments de traction de l'agencement d'éléments de traction dans l'ascenseur - Google Patents

Agencement d'éléments de traction mis en œuvre avec une structure de type courroie, ascenseur et utilisation d'éléments de traction de l'agencement d'éléments de traction dans l'ascenseur Download PDF

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Publication number
WO2013041759A1
WO2013041759A1 PCT/FI2012/050810 FI2012050810W WO2013041759A1 WO 2013041759 A1 WO2013041759 A1 WO 2013041759A1 FI 2012050810 W FI2012050810 W FI 2012050810W WO 2013041759 A1 WO2013041759 A1 WO 2013041759A1
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WO
WIPO (PCT)
Prior art keywords
belt
elevator
type structure
tension means
traction
Prior art date
Application number
PCT/FI2012/050810
Other languages
English (en)
Inventor
Matti RÄSÄNEN
Pentti Alasentie
Markku HÄIVÄLÄ
Esko Aulanko
Markku Haapaniemi
Original Assignee
Kone Corporation
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 Kone Corporation filed Critical Kone Corporation
Publication of WO2013041759A1 publication Critical patent/WO2013041759A1/fr

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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
    • B66B19/00—Mining-hoist operation
    • B66B19/007—Mining-hoist operation method for modernisation of elevators
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/22—Flat or flat-sided ropes; Sets of ropes consisting of a series of parallel ropes
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/1016—Rope or cable structures characterised by their internal structure characterised by the use of different strands
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2007—Elevators

Definitions

  • the object of the invention is belt-type structures and the application of belt-type structures in elevators. More particularly the object of the invention is a traction member arrangement implemented with a belt-type structure as presented in the preamble of claim 1, an elevator as presented in the preamble of claim 12, and the use of traction members of the traction member arrangement in the elevator as presented in claim 21.
  • a problem with a belt e.g. a toothed belt or a multigroove V-belt, that functions as a traction member and that is essentially wide with respect to its thickness is that the belt must adapt to axial tolerances of the wheels turned by the belt, because the shafts of the traction sheaves and of the diverting pulleys turned by the belt are not always sufficiently precise in the direction of the plane of rotation of the belt. In this case the difference between the tension of the center part of an unadapted belt and the tension exerted on the edges of the belt becomes too large, and the belt wears out quickly. High alignment accuracy is often needed in belt drives, in which case the fixing structures of the wheels guiding the belts and the installation to the fixing structures become expensive. Some structural solutions can in practice become almost impossible to implement. When using e.g. toothed belts the maximum angular error of the driven belt, on the one hand, and the minimum center distance permitted for the belt, on the other hand, limit the structures to be implemented.
  • the traction member arrangement according to the invention it is advantageous to implement elevator solutions wherein the suspension ropes of the elevator car and of the counterweights or compensating weights are separated from the traction members.
  • the elevator machine is generally in the bottom part of the elevator hoistway, e.g. on the base of the elevator hoistway or close to it.
  • This type of elevator solution provided with a traction member arrangement according to the invention is well suited to low- rise and medium-rise buildings and, owing to the even distribution of tension of the traction members, even to elevators intended for extremely tall buildings, in which one problem is that when the hoisting machine of the elevator is above, installation of the machine and peripheral structures is awkward, expensive and even dangerous.
  • the high-speed elevators in high-rise buildings require large fuses and there are often many elevators in one or more elevator groups. For this reason also the electric cablings needed for the elevator hoisting machines are expensive and in high-rise buildings this is even more pronounced because the electric cables from the power distribution boards below to the hoisting machines above are long. Long electric cables cause power losses and various other interferences in their immediate environment, e.g. electromagnetic interferences.
  • the arrangement according to the invention is also suited to new elevators in low-rise buildings that previously had no elevator.
  • the solution according to the invention is well suited to the modernization of old elevators .
  • a preferred embodiment solution is one wherein the elevator car is suspended in the elevator hoistway from suspension roping and the elevator car is driven from the bottom part of the elevator hoistway with drive machinery using one or more traction members, which travel (s) via a diverting pulley/diverting pulleys that is/are disposed in the bottom part of the elevator hoistway and that is/are separate from the traction sheave belonging to the drive machinery. Since the alignment between the traction sheave and the diverting pulley/diverting pulleys can, owing to the invention, clearly differ from each other, by even a degree or some degrees, the fixing means of the machine and of the diverting pulleys, and also the mounting of them, can be rather robust.
  • the aim of the present invention is to eliminate the aforementioned drawbacks and to achieve an inexpensive and easy-to-implement traction member arrangement, which enables the hoisting machine of the elevator to be disposed in the bottom part of the elevator hoistway even in high-rise buildings without excessive internal tensions arising from dimensional inaccuracies in the alignments of traction sheaves and diverting pulleys being exerted on the traction members. Additionally, the aim of the invention is to achieve an arrangement, which enables a number of different, easy-to- implement suspension options for an elevator with machine room below.
  • the arrangement according to the invention is characterized by what is disclosed in the characterization part of claim 1.
  • the elevator according to the invention is characterized by what is disclosed in the characterization part of claim 12.
  • Other embodiments of the invention are characterized by what is disclosed in the other claims.
  • the use in an elevator of the traction members of the traction member arrangement according to the invention is characterized by what is disclosed in claim 21.
  • inventive embodiments are also discussed in the descriptive section of the present application.
  • inventive content of the application can also be defined differently than in the claims presented below.
  • inventive content may also consist of several separate inventions, especially if the invention is considered in the light of expressions or implicit sub-tasks or from the point of view of advantages or categories of advantages achieved. In this case, some of the attributes contained in the claims below may be superfluous from the point of view of separate inventive concepts.
  • the different details presented in connection with each embodiment can also be applied in other embodiments.
  • at least some of the subordinate claims can, in at least some situations, be deemed to be inventive in their own right.
  • the belt structure to be used in the invention can in many ways be made to be more flexible in the proximity of the edges than in the proximity of its longitudinal center line.
  • a more flexible belt structure can be made e.g. by using more flexible braids in the proximity of the edges than in the proximity of the center line of the belt structure or by making the distance between braids on the edges greater than it is in the proximity of the center line.
  • One advantage, among others, of the solution according to the invention is that by means of it the use of long toothed belts and long multigroove V-belts is enabled without excessive internal tensions arising from dimensional inaccuracies in the alignments of traction sheaves and diverting pulleys being exerted on the belts.
  • Another advantage is that installation of a hoisting machine is easier and cheaper than when installing the hoisting machine into the top part of a building. Yet another advantage is faster and easier installation of an elevator, because the ' dimensional accuracy requirements for the alignments of the traction sheaves and diverting pulleys are lower. Another advantage is also that suitably dimensioned traction members function as compensating ropes, in which case separate compensating ropes are not needed. In this case the masses to be moved as well as the costs of the elevator are smaller. Additionally another advantage is that the tensioning devices of the traction members function as compensating weights, and this also lowers the costs of the elevator. In addition, in a toothed belt drive the machine of the elevator functions as a locking device, in which case a separate locking device is not needed.
  • the arrangement according to the invention enables much smaller moving masses than in elevators according to prior art, in which case the acceleration power needed is smaller, a consequence of which is a smaller machine, a more lightweight structure, smaller guide rails, smaller guide rail clamps, et cetera.
  • the diameter of the traction sheave can be approx. 1/4 of the diameter of the traction sheave needed in solutions according to prior art. From this it follows that a sufficient torque of the machine is also only approx. 1/4 of the torque needed in solutions according to prior art. In this case the efficiency ratio of the machine is appreciably better than prior art, because the speed of rotation is approx. four times faster.
  • the shaft load of the hoisting machine of the elevator is only a fraction of the shaft load of solutions according to prior art, because the shaft of the machine does not support hanging masses, but instead only the active forces produced by traction.
  • the dimensioning of the bearings can be a lot lighter.
  • the suspension ropes do not participate in the traction, the dimensioning of them can be made to be more lightweight, in which case thinner ropes or fewer ropes can be used.
  • the structures and peripherals of the elevator are in this case lighter and cheaper.
  • the same elevator concept can be used for different applications, e.g. for residential apartment use or hotel use, and the use of the elevator can be monitored after the original installation and, based on the results, the balance of the elevator can easily be changed to correspond better to the actual use of the elevator.
  • Fig. 1 presents an oblique sectioned view from the top and side of a traction member according to the invention
  • Fig. 1 a presents an oblique sectioned view from the top and side of one second traction member according to the invention
  • Fig. 1 b presents an oblique sectioned view from the top and side of one third traction member according to the invention
  • c presents an oblique sectioned view from the top and side of one more traction member according to the invention
  • FIG. 2 presents a simplified and diagrammatic top view of one elevator arrangement according to Fig. 2, wherein the compensating weights are disposed on different sides of the guide rail line of the elevator car to each other and on different sides of the elevator car,
  • FIG. 2 presents a simplified and diagrammatic top view of one elevator arrangement according to Fig. 2, wherein the compensating weights are disposed on the same side of the guide rail line of the elevator car as each other and on different sides of the elevator car,
  • Fig. 7 presents a simplified top view of an elevator arrangement according to Fig. 7, in the bottom part of the elevator hoistway
  • Fig. 9 presents a simplified and diagrammatic front view of yet one more elevator arrangement according to ⁇ ⁇ - the invention, wherein two hoisting machines of the elevator are disposed in the bottom part of. the hoistway, or close to it.
  • a flexible belt e.g. provided with thin tension means, gives easily and flexes with respect to errors in the planes of rotation between the traction sheaves and the diverting pulleys.
  • belt drives in which the lengths of the belt are long such as e.g. in elevator use, in which a belt is used as a traction member, an easily elongated belt causes many problems and therefore elongations must be minimized.
  • Table 1 below presents the main properties and the distribution of tensions and forces exerted on the teeth in relation to the width of the belt at a certain load of the belt and with an alignment error of 0.5 mm/100 mm between the planes of rotation of the traction sheaves and diverting pulleys of a standard toothed belt according to prior art provided with relatively thin and flexible reinforcements of equal thickness as each other.
  • the values presented in Table 1, as also in the corresponding Tables presented later, are for only one side of the width of the toothed belt such that Reinforcement no. 1 is the closest stiffener, i.e. tension means, to the longitudinal center line of the toothed belt, Reinforcement no. 2 is the next reinforcement towards the edge of the toothed belt and Reinforcement no.
  • the toothed belt presented by Table 1 comprises altogether 20 longitudinal reinforcements of the toothed belt, 10 units of which are on each side of the longitudinal center line of the toothed belt.
  • the second column presents the diameter (d) of the tension means functioning as a reinforcement
  • the third presents the modulus of elasticity (E) of the reinforcement
  • the fourth the tension (F) produced in the reinforcement.
  • the fifth column presents the elongation (s) produced in the reinforcements
  • the last column presents as a percentage the relative tension F% acting on the reinforcements when Reinforcement 1, being the reference, is 100%.
  • the last column thus presents the percentage tension distribution acting on the teeth over the width of the toothed belt.
  • a belt provided with thin reinforcement is too flexible e.g. to be a long traction belt, it is easy to stiffen the belt e.g. by increasing the diameters of the reinforcements.
  • Table 2 presents an example implemented with otherwise the same values as in Table 1, except that . the diameter of the reinforcements is now 2.0 mm instead of 1.2 mm.
  • a solution to the problem in the traction member arrangement according to the invention is that the rigidity of the tension means that are the reinforcements is configured to decrease from the center of the belt going towards the edges. In this case in the proximity of the edges of the belt there are thus more flexible tension means than in the proximity of the center line of the belt.
  • This type of structure can be implemented in many different ways, e.g. by disposing in the proximity of the center line of the belt reinforcements that are larger in diameter than in the proximity of the edges of the belt and the effect can be further improved by using thinner reinforcements the nearer the edge of the belt the reinforcement is situated.
  • Table 3 presents one aforementioned embodiment comprising a total of 18 reinforcements possessing the same tensile strength and modulus of elasticity.
  • Another way of configuring the rigidity of the tension means to decrease when going from the center of the belt towards the edges is to dispose reinforcements having - a larger tensile strength and modulus of elasticity in the center of the belt and reinforcements having a smaller tensile strength and modulus of elasticity in the edges.
  • This can be implemented e.g. with different braids and with different materials of the reinforcements.
  • Table 4 presents one aforementioned embodiment comprising a total of 18 reinforcements of the same thickness.
  • this solution also allows a much larger dimensional inaccuracy in relation to the planes of rotation between the traction sheaves and the diverting pulleys than the solution according to prior art presented in Fig. 2.
  • the tensions in relation to the width of the toothed belt are more even than in toothed belts according to prior art.
  • the tension arising is transmitted as a more even force to the teeth and the contact force between the traction sheave or diverting pulley and a tooth is transmitted evenly over the whole width of the tooth, in which case large local forces are not exerted on the tooth and the tooth wears evenly.
  • the teeth of the belt are easily able to directly reach the toothed surfaces of the traction sheaves or diverting pulleys also when the pulley/sheave is near the fixing point of the toothed belt, e.g. in elevator use when the elevator car or compensating weights come close to the diverting pulleys in the bottom part of the hoistway. Since the force caused by the tension difference is smaller than in solutions according to prior art, the toothed belt does not need to be as rigid as in solutions according to prior art and the belt can manage to bend in a slewed direction more than belts according to prior art. In this case also the back part of the belt can be made to be thinner than normal.
  • Figs. 1-lc present a simplified cross-sectional view of some belts belonging to the traction member arrangement according to the invention.
  • Fig. 1 presents a toothed belt 1 provided with straight teeth lc, inside the back part Id in the shell of which is a plurality of tension means 7 functioning as reinforcements.
  • the tension means 7 are side by side at regular intervals from each other in the back part Id and they are arranged essentially on a plane in the direction of the plane of the back part Id of the toothed belt 1.
  • all the tension means 7 are of the same material as each other and they have essentially the same tensile strength and modulus of elasticity as each other.
  • the tension means 7a that are in the center of the back part Id of the toothed belt 1 are larger in diameter than the tension means 7b and 7c that are on the edges of the back part Id, of which tension means the edgemost 7c are the smallest of all in diameter. Since the tension means 7a-7c are of the same material and they have essentially the same tensile strength and modulus of elasticity as each other, the thicker tension means 7a in the center are more rigid than the thinner tension means 7b and 7c on the edges. From this it follows that the toothed belt 1 can elongate at its edges more than at its center part, in which case the toothed belt 1 is more flexible at its edges than at its center part.
  • This property helps the teeth lc to adapt better to angular differences in the planes of rotation of the traction sheaves and diverting pulleys, in which case the structure is more forgiving to dimensional errors occurring in installation in the alignment of traction sheaves- and diverting pulleys.
  • Fig. la presents a toothed belt 1 otherwise of the type of Fig. 1 but in this solution greater flexibility of the edges of the back part Id than of its center part is implemented in the manner presented in Table 4.
  • all the tension means 7 are as thick as each other, but the tensile strength and the modulus of elasticity of the tension means 7d that are in the proximity of the longitudinal center line of the toothed belt 1 are greater than the tensile strength and the modulus of elasticity of the tension means 7e that are in the proximity of the side edges of the toothed belt 1.
  • the tension means 7d near the center line have greater tensile strength and a greater modulus of elasticity than the tension means 7e in the proximity of the edges, the tension means 7d in the center are more rigid than the tension means 7e on the edges. From this it follows that the toothed belt 1 can elongate at its edges more than at its center part, in which case the toothed belt 1 is more flexible at its edges than at its center part, and the structure is more forgiving to dimensional errors occurring in installation in the alignment of traction sheaves and diverting pulleys than solutions according to prior art .
  • Figs, lb and lc present a toothed belt 1 otherwise of the type of Fig. 1, but in these solutions the toothed belt 1 is provided with teeth lc that are at an inclined attitude with respect to the direction of travel of the toothed belt 1, instead of with straight teeth at a right angle with respect to the direction of travel of the toothed belt 1.
  • teeth lc that are at an inclined attitude with respect to the direction of travel of the toothed belt 1, instead of with straight teeth at a right angle with respect to the direction of travel of the toothed belt 1.
  • the teeth lc are, as viewed from above, the shape of an open V, in which the tip of the tooth is on the longitudinal center line of the toothed belt 1.
  • the teeth lc are, as viewed from , above, again the shape of an open V, but now the tip part is missing from the teeth and the teeth on each side of the longitudinal center line of the toothed belt 1 are separate from one another such that a straight groove le in the longitudinal direction of the toothed belt 1, extending to the front surface of the back part Id of the tooth, forms in the longitudinal center line of the toothed belt 1.
  • the number, size, strength properties, braiding, material and locations of the tension means 7 of the back part Id of the toothed belt 1 can be varied in many different ways.
  • the rigidity of the edge parts can be further reduced e.g. by increasing the distance between tension means 7 in the proximity of the edges of the toothed belt 1.
  • One possibility in the traction member arrangement according to the invention is to increase the diameter of the tension means 7 compared to the tension means in corresponding belts according to prior art.
  • more load-bearing cross-sectional area of reinforcement e.g. steel cross-sectional area
  • increasing the diameter of the tension means 7 from a diameter of 1.6 mm to a diameter of 2.25 mm doubles the load-bearing cross-sectional area.
  • a steel of a lower strength grade which is also cheaper, can correspondingly be used as the material of the tension means 7.
  • tension means 7 made from steel of a lower strength grade are less vulnerable to damage.
  • the strength of the tension means 7 increases by a factor of 1.5.
  • At least one elevator arrangement comprises at least an elevator car 11 configured to move up and down in an elevator hoistway and at least one or more compensating weights 2a, 2b, which are for their part connected to support the elevator car 11 by the aid of their own suspension members 3 that are completely separate from the traction members 1, la, lb, such as by the aid of belts or ropes and also by the aid of e.g. diverting pulleys 4 mounted on bearings in the top part of the elevator hoistway.
  • the arrangement according to the invention comprises a hoisting machine 6 provided with at least one traction sheave 5 or corresponding, and at least two or more traction members la, lb, such as a rope or a belt, which are configured to transmit the rotational movement of the traction sheave 5 into linear movement of the elevator car 11 and of the compensating weights 2a, 2b.
  • a hoisting machine 6 provided with at least one traction sheave 5 or corresponding, and at least two or more traction members la, lb, such as a rope or a belt, which are configured to transmit the rotational movement of the traction sheave 5 into linear movement of the elevator car 11 and of the compensating weights 2a, 2b.
  • Characteristic to the invention, and common to all the different embodiments of the invention is that each compensating weight 2a, 2b, or in some cases only one, or more than two, compensating weights, are connected by the aid of their own traction member la, lb provided with essentially constant tensioning to most preferably
  • the aforementioned two or more compensating weights 2a, 2b enable an essentially easy layout in elevator design.
  • the layout also brings various space benefits.
  • one layout solution can be e.g. the type of layout in which, when viewed from above, at the center of the elevator hoistway is a plane formed by the car guide rails of the elevator and around this plane are four corners for different structural solutions.
  • two corners are used for the compensating weights 2a, 2b and their guide rails, one corner is used for safety devices, mainly e.g. for an overspeed governor, and one corner is used for other devices, such as for the trailing cables, et cetera.
  • Fig. 2 presents a simplified and diagrammatic side view of one elevator arrangement according to the invention.
  • the elevator arrangement according to Fig. 2 comprises two compensating weights 2a and 2b, both of which are connected to the elevator car 11 by the aid of their own suspension members 3.
  • Each suspension member 3 is fixed at its first end to the elevator car 11 and passes over a diverting pulley 4 in the top part of the elevator hoistway or in the machine room and returns downwards, and is fixed at its second end to a compensating weight functioning as a counterweight 2a, 2b.
  • the suspension members 3 are preferably so-called "high tensile rope" type members, having a strength category of over 2100 N/mm2.
  • the fixing point of the first end of the suspension member 3 to the elevator car 11 is configured such that the elevator car 11 can rise past the diverting pulleys 4 in the top end of the ho.istway right to the top end of the hoistway. In this way the most space-efficient layout solution possible is achieved.
  • All the elevator arrangements according to the invention can comprise the same type of fixing solution of the suspension member 3 to the elevator car 11, although that is not presented in all the figures.
  • a hoisting machine 6 provided with a traction sheave 5 is configured to move the elevator car, which hoisting machine is preferably disposed in the bottom part of the elevator hoistway, e.g. on the base of the elevator hoistway or right in the proximity of the base. In this case installation of the hoisting machine 6 is easy, and long electric cables from the bottom part of the building to the hoisting machine or to the cubicles are not needed. Additionally, at least one humidity sensor, which is arranged to issue an alarm and if necessary to stop the elevator if excessive water comes onto the base of the hoistway, is disposed on the base of the hoistway. In this way the elevator machine and the electrical components of the elevator can be protected from excessive humidity.
  • lb is disposed between the bottom part of the compensating weights 2a, 2b and the bottom part of the elevator car 11, which traction member receives its movement transmission force from the traction sheave 5 of the hoisting machine 6.
  • the first traction member la is fixed at its first end to a first compensating weight 2a, is configured to leave the compensating weight 2a and go downwards and is led to pass under at least one diverting pulley 8a, after which the traction member la is led to a traction sheave 5, which rotates on the vertical plane, of the hoisting machine 6 disposed below the elevator car 11 from the first side of the traction sheave 5, and is configured to pass around the traction sheave 5 on a first point of the contact surface of the traction sheave 5 on the second side of the traction sheave 5, to return back to the first side of the traction sheave 5 and is led onwards to pass under at least a second diverting pulley 8b and to ascend after this to the elevator car 11, on which is a fixing means 11a maintaining essentially constant tensioning force, to which the traction member la is fixed at its second end.
  • the second traction member lb is configured to travel from the second compensating weight 2b via the traction sheave 5 to the elevator car in essentially the same manner as the first traction member la.
  • the second traction member lb is fixed at its first end to a second compensating weight 2b, is configured to leave the compensating weight 2b and go downwards and is led to pass under at least one diverting pulley 9a, after which the traction member lb is led to a traction sheave 5, which rotates on the vertical plane, of the hoisting machine 11 disposed below the elevator car 11 from the second side of the traction sheave 5, and is configured to pass around the traction sheave 5 on a second point of the contact surface of the traction sheave 5 on the first side of the traction sheave 5, to return back to the second side of the traction sheave 5 and is led onwards to pass under at least a second diverting pulley 9b and to ascend after this to the elevator car 11, on which is a fixing means lib
  • the contact surface of the traction sheave 5 is so wide that both the traction members la, lb fit side-by-side onto the contact surface of the traction sheave without- interfering with each other. In this way one and the same hoisting machine 6 gives to both the traction members la, lb a force producing linear movement of the elevator car 11 and of the compensating weights 2a, 2b.
  • Figs. 3 and 4 present top views of different options for disposing the compensating weights 2a, 2b in the elevator hoistway.
  • the compensating weights 2a, 2b are disposed on opposite sides of the elevator car 11 and on different sides of the guide rail line of the elevator car 11 to each other, in which case the suspension of the elevator car 11 and of the compensating weights 2a, 2b is very symmetrical and does not produce any additional stresses e.g. on the guide rails.
  • the compensating weights 2a, 2b are disposed on opposite sides of the elevator car 11 and on the same side of the guide rail line of the elevator car 11 as each other.
  • Figs. 5 and 6 present a simplified and diagrammatic view of one second elevator arrangement according to the invention, wherein the hoisting machine 6 of the elevator is disposed in the bottom part of the elevator hoistway, or close to it.
  • Fig. 5 presents the solution as viewed from the side
  • Fig. 6 the same solution as viewed from the top of the hoisting machine 6.
  • the compensating weights 2a, 2b are presented in Fig. 6 with dot-and-dash lines .
  • Figs. 7 and 8 present a simplified and diagrammatic view of one more elevator arrangement according to the invention, wherein the hoisting machine 6 of the elevator is disposed in the bottom part of the elevator hoistway, or close to it.
  • Fig. 7 presents the solution as viewed from the side
  • Fig. 8 the same solution as viewed from the top of the hoisting machine 6.
  • the compensating weights 2a, 2b are presented in Fig. lb with dot-and-dash lines .
  • Fig. 9 presents a front view of one more elevator arrangement according to the invention, comprising two hoisting machines 6 of the elevator, which, with the traction sheaves 5, are disposed in the bottom part of the elevator hoistway, or close to it.
  • the first hoisting machine 6 is fitted between one or more compensating weights 2 and the elevator car 11 on one side of the elevator car 11, and the second hoisting machine 6 is fitted between one or more compensating weights
  • the traction member 1, la, lb is preferably a toothed belt. What all the arrangements presented have in common is that the traction members 1, la, lb are fixed at one of their ends, e.g. their end on the elevator car 11 side, with a fixing means 11a, lib providing a constant tensioning force such that the traction member 1, la, lb always remains sufficiently taut on the rim of the traction sheave 5 and that when the suspension members
  • the fixing means 11a, lib is additionally provided with an overload function, which limits the tensioning force of the traction member 1, la, lb to the desired maximum value, which is preferably greater than the force exerted on the fixing means 11a, lib in an emergency stop of the empty elevator car 11.
  • the supporting of the elevator car 11 is separated from the moving means of the elevator car and smart materials, such as toothed belts, in which traction is not based on friction but instead on shape-locking, preferably suited to the purpose are used as the moving means, i.e. as the traction members 1, la, lb. Since the traction is not based on friction and elongations of the suspension members 3 can.
  • smart materials such as toothed belts, in which traction is not based on friction but instead on shape-locking, preferably suited to the purpose are used as the moving means, i.e. as the traction members 1, la, lb. Since the traction is not based on friction and elongations of the suspension members 3 can.
  • one or more compensating weights 2, 2a, 2b can be used instead of counterweights, which compensating weights are disposed in the elevator hoistway space-efficiently in relation to the cross-section of the elevator hoistway and their mass is optimized according to the use of the elevator such that the elevator arrangement is made to function in the best possible way in relation to energy efficiency in exactly the use for which it has been delivered.
  • the aggregate mass of the compensating weights 2-2b is some suitable value between -10...60% of the rated load of the elevator, preferably e.g. some suitable value between 0...50% of the rated load of the elevator.
  • the aforementioned space efficiency can be further improved with traction sheaves and diverting pulleys that are small in diameter and that can be disposed in a ' small space.
  • a trailing cable 10 is fixed from the elevator car 11 to the wall of the elevator hoistway, the weight per meter of which trailing cable (m cab i e ) is the difference (m rope - m be it) between the metric weights of approx .4 *the suspension members 3 and of the traction members 1, la, lb.
  • the mass (BWT) of the compensating weights 2a, 2b is preferably determined such that it is the mass (KT) of the elevator car 11 and its auxiliary devices + balance percentage (C%) *load (Q) + travel height (H) *the difference between the weights per meter of the suspension members and the traction members (m rop e - m belt ) .
  • the suspension members 3 of the elevator can be optimized such that the safety factor is only the 12 conventionally demanded in safety norms, or a little more, depending on the groove profiles of the diverting pulleys suspending the suspension members 3.
  • the safety factor can easily in practice be implemented 30% or even over 50% higher than the 12 according to the minimum requirement, which results from other dimensioning criteria affecting the ropes, e.g. from endurance to maximum surface pressure, et cetera.
  • An elevator based on the arrangement according to the invention thus also becomes lighter owing to the lightening of the roping.
  • the hoisting machine can be on the base of the elevator hoistway, or close to the base, but also on some side of the elevator hoistway and also in the top part of the elevator hoistway.
  • the number of compensating weights can also be greater than two or three. There can be e.g. four, six, eight, ten or even more compensating weights disposed in a different manner.
  • the structure and shape of the belts functioning as the traction members can differ to what is presented above.
  • the attitude and shape of a tooth can be different to what is presented above and the structure, shape, size, number, location, strength and material of the tension means in the back part of the belt can be different to what is presented above.
  • the material of the tension means, especially on the edges of the belt can instead of steel be e.g. carbon fiber, glass fiber, an artificial substance, preferably ⁇ Aramid, or combinations of one or more of the aforementioned or some other material or non-metal fiber or braid suited to the purpose .
  • edges of belts functioning as traction members can be arranged to be more flexible than the center part by completely omitting the tension means from the edge of the belt for a suitable distance towards the center line of the belt.
  • the tensile strength and elongation of the belt are based at the edges of the belt on only the own basic material of the belt, which can however be stronger material than the center part of the belt .
  • the traction member can also be e.g. a multigroove V-belt, a plurality of parallel hoisting ropes or even a chain-type member.

Landscapes

  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

L'invention porte sur un agencement d'éléments de traction mis en œuvre avec une structure de type courroie (1), pour transmettre un mouvement de rotation produit par une machinerie d'entraînement sous la forme d'un mouvement linéaire, laquelle structure de type courroie (1) comprend une enveloppe comportant une partie arrière (Id), à l'intérieur de laquelle se trouve une pluralité de moyens de tension (7-7e) agencés de façon à se trouver dans la direction de la longueur de la structure de type courroie (1), ainsi que sur un ascenseur comportant l'agencement d'éléments de traction précédemment mentionné. Les moyens de tension (7b, 7c, 7e) qui se trouvent à proximité des bords de la structure de type courroie (1) sont plus souples que les moyens de tension (7a, 7d) qui se trouvent à proximité de la ligne centrale longitudinale de la structure de type courroie.
PCT/FI2012/050810 2011-09-19 2012-08-24 Agencement d'éléments de traction mis en œuvre avec une structure de type courroie, ascenseur et utilisation d'éléments de traction de l'agencement d'éléments de traction dans l'ascenseur WO2013041759A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20115920 2011-09-19
FI20115920A FI20115920A0 (fi) 2011-09-19 2011-09-19 Hihnamaisella rakenteella toteutettu vetoelinjärjestely, hissi ja vetoelinjärjestelyn vetoelimien käyttö hississä

Publications (1)

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WO2013041759A1 true WO2013041759A1 (fr) 2013-03-28

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FI (1) FI20115920A0 (fr)
TW (1) TW201335507A (fr)
WO (1) WO2013041759A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105347149A (zh) * 2015-11-23 2016-02-24 江苏赛福天钢索股份有限公司 一种电梯用提拉件
WO2017068235A1 (fr) * 2015-10-20 2017-04-27 Kone Corporation Moyen de traction du type à courroie et procédé de fabrication du moyen de traction, ainsi qu'utilisation dudit moyen de traction dans un ascenseur et ascenseur équipé dudit moyen de traction
US11214465B2 (en) 2016-12-16 2022-01-04 Otis Elevator Company Elevator system suspension member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017102410U1 (de) * 2017-04-24 2017-07-31 Igus Gmbh System zur Lage- und/oder Leitungsüberwachung in einer Energieführungskette

Citations (2)

* 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
US20070278047A1 (en) * 2001-11-23 2007-12-06 Ach Ernst F Elevator with belt-like transmission means, particularly with wedge-ribbed belt, as support means and/or drive means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070278047A1 (en) * 2001-11-23 2007-12-06 Ach Ernst F Elevator with belt-like transmission means, particularly with wedge-ribbed belt, as support means and/or drive means
US20050115799A1 (en) * 2003-12-01 2005-06-02 Ernst Ach Elevator system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017068235A1 (fr) * 2015-10-20 2017-04-27 Kone Corporation Moyen de traction du type à courroie et procédé de fabrication du moyen de traction, ainsi qu'utilisation dudit moyen de traction dans un ascenseur et ascenseur équipé dudit moyen de traction
CN108137279A (zh) * 2015-10-20 2018-06-08 通力股份公司 带式牵引装置，制造该牵引装置的方法，该牵引装置在电梯中的使用以及设置有该牵引装置的电梯
US10773925B2 (en) 2015-10-20 2020-09-15 Kone Corporation Belt-type traction means and method for fabricating the traction means as well as use of said traction means in an elevator and an elevator provided with said traction means
CN105347149A (zh) * 2015-11-23 2016-02-24 江苏赛福天钢索股份有限公司 一种电梯用提拉件
US11214465B2 (en) 2016-12-16 2022-01-04 Otis Elevator Company Elevator system suspension member

Also Published As

Publication number Publication date
FI20115920A0 (fi) 2011-09-19
TW201335507A (zh) 2013-09-01

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