EP3077320A1

EP3077320A1 - Lift installation

Info

Publication number: EP3077320A1
Application number: EP14799775.3A
Authority: EP
Inventors: Adrian Steiner; Christoph Schuler; Nicolas Gremaud; René STREBEL; Urs Schaffhauser; Marcel Nicole
Original assignee: Inventio AG
Current assignee: Inventio AG
Priority date: 2013-12-05
Filing date: 2014-11-18
Publication date: 2016-10-12
Anticipated expiration: 2034-11-18
Also published as: CN105764830A; WO2015082210A1; US20170158465A1; EP3077320B1; CN105764830B; ES2663486T3; US10035683B2; PL3077320T3

Abstract

A lift installation (1) comprises a first lift car (5), a second lift car (6), a drive-machine unit (20) and a plurality of traction means (22) running over a driving sheave (21) of the drive-machine unit (20). The lift cars (5, 6) here can be displaced one above the other by the drive-machine unit (20), using the traction means (22), in a passageway (16) provided for the joint travel of the lift cars (5, 6). The traction means (20) are divided up into a first traction-means assembly (23) and a second traction-means assembly (24). Also provided is an adjustment mechanism (35) which is in a fixed position relative to the passageway (16) and interacts with the second traction-means assembly (24) between the driving sheave (21) and the second lift car (6). The adjustment mechanism (35) here interacts with the second traction-means assembly (24) such that it is possible to vary a distance (15) between the lift cars (5, 6). The lift installation (1) is distinguished in that the distance (15) can be adjusted independently of the driving sheave (21), in particular even with the driving sheave (21) at a standstill. It is specifically possible for the adjustment mechanism (35) to have a roller arrangement (36), wherein an adjustable roller (39) of the roller arrangement (36) can be adjusted by an adjustment drive (40) in order to vary the length (45) of a portion (43) of the second traction-means assembly (24) between the adjustment mechanism (35) and the second lift car (6).

Description

elevator system

The invention relates to an elevator installation with a first elevator cage and at least one second elevator cage, which are preferably arranged in an elevator cage frame of the elevator installation. Specifically, the invention relates to the field of elevator systems, which are designed as so-called biplane elevator systems.

From WO 2005/014461 AI an elevator with two elevator cars is known, wherein the two elevator cars are coupled together so that they are movable together in an elevator shaft. In this case, a vertical distance between the two elevator cars can be adjusted by moving at least one elevator car relative to the other elevator car. This is done by an adjustment cable. One end of the adjusting cable is fastened to the shaft bottom. At the other end of the adjusting cable hangs a counterweight. Furthermore, that is

Adjustment led over a drive letter of Eineilantriebs that includes an elevator machine. This elevator machine is provided in addition to a further elevator machine, wherein the further elevator machine serves to move the entire arrangement with the two elevator cars through the elevator shaft.

The known from WO 2005/014461 AI elevator system has the disadvantage that, so to speak, two complete arrangements with elevator machines and counterweights and the

In this case required pulleys are required to allow for a joint movement of the two elevator cars through the elevator shaft and on the other hand, the adjusting mechanism for adjusting the distance between the two

To realize elevator cabins. In this case, the elevator machine, which allows the movement of the two elevator cars through the shaft, must be so strong that this aileine the

Biplane arrangement with the two elevator cars can move. Furthermore, the drive machine, which is provided for the distance change, must be strong enough to ensure the relative movement of the two elevator cars to each other even in unfavorable loading conditions of the two elevator cars. Thus, the relevant components including the traction means or ropes for a correspondingly high

Be designed capacity. Overall, this results in a high effort, a large amount of space and the associated high costs in the realization.

The object of the invention is to provide an elevator system, which has an improved structure. Specifically, it is an object of the invention to provide an elevator system in which an adjustment of several elevator cars to each other in an optimized manner is possible and / or at an optionally provided elevator cage frame in the suspension of the

Elevator cage frame and forces acting in the elevator car frame are reduced.

In the following solutions and proposals for a corresponding elevator system are presented, which solve at least parts of the task. In addition, advantageous additional or alternative developments and refinements are given.

The elevator installation has a first elevator car and a second elevator car. In this case, further elevator cars can be provided. At least one of the elevator cars, in particular the second elevator car, are in this case adjustable relative to the first elevator car with respect to their spacing therebetween. The adjustment mechanism provided for this purpose is described below in an operating mode which is an adjustment of the second

Elevator car relative to the first elevator car allows. Here, appropriate modifications and additions are conceivable to individually or together and more

Elevator cabs to adjust over at least one other adjusting mechanism. In one embodiment, in which only the first elevator car and the second elevator car, but no further elevator cars are provided, a so-called double-decker elevator system can be realized.

In an advantageous embodiment of the elevator system can for driving the

Elevator car provided driving space to be arranged in a lift shaft. The

Drive unit can then also be arranged in the elevator shaft. However, the prime mover may also be housed in a separate engine room. The adjusting mechanism can then advantageously also be accommodated in the elevator shaft or in the machine room. However, it is also conceivable that the drive machine unit is accommodated, for example, in a machine room, while the adjusting mechanism is accommodated in the elevator shaft. In this way, depending on local conditions, in particular the available space, a suitable solution can be realized. This results in a broad scope.

The traction means are divided into a first Zugmittelverbund, a second Zugmittelverbund and optionally in at least one further Zugmittelverbund. For example, the traction means may be formed by six cables. The first Zugmittelverbund can then

For example, include three of these ropes, while the second Zugmittelverbund comprises the other three ropes. Here, both a matching, as well as a different distribution with respect to the number of traction means on the individual Zugmittelverbünde is possible. It is also conceivable that at least one of the Zugmittelverbünde only from a traction means, in particular a Rope exists.

The traction means are guided in a suitable manner over the traction sheave of the drive machine unit. Here, the traction sheave may have a corresponding number of Ril len. The term of the traction sheave is not limited to a one-piece traction sheave. If it is expedient, then also several disks next to each other on the axis of the

Be arranged drive machine unit over which the traction means run. The concept of

Traction sheave is thus to understand in terms of function, the output torque of

To transfer drive unit on the traction means.

The traction means, in addition to the function of transmitting the force or the moment of

Drive unit also have the function to carry the elevator cars. Under the

Method of elevator cars in the proposed driving space is in particular a lifting or lowering to understand. However, an embodiment as an inclined lift is conceivable.

In an advantageous manner, the adjustment mechanism cooperates with the second traction mechanism assembly in such a way that a length of a section of the second traction mechanism assembly is interposed between the traction mechanism

Adjustment mechanism and the second elevator car is variable. This can be the second

Elevator car except for a movement which is caused by a rotation of the traction sheave, zoom closer to the adjusting or further away from this. This then changes the distance of the second elevator car from the first

Elevator car.

It is also advantageous that the adjusting mechanism has a roller arrangement, through which the second Zugmittelverbund runs and in this case forms a free loop. The roller assembly has at least one adjustable roller, which preferably cooperates in the region of the free loop with the second Zugmittelverbund. By adjusting the adjustable roller then a longer portion and thus a larger part of the second Zugmittelverbunds can be drawn into the roller assembly. Accordingly, in the opposite case, the second Zugmittelverbund again be released from the Rolienanordnung at least in part. This results in a variable proportion of the second Zugmittelverbunds, by the

Rolienanordnung the adjustment runs, while the first Zugmittelverbund is unaffected. Thanks to the leadership of the second Zugmittelverbunds by the adjusting device as a free loop, the proportion of the second Zugmittelverbunds, which runs through the roles of order of Verstellmechnismus regardless of a rotational movement of the traction sheave variable, especially so when the traction sheave. This results in the advantage that the distance between the first and the second elevator car already before lifting or lowering the first and the second elevator cars is adjustable by the traction sheave.

This advantage is particularly useful when the length of the section of the second Zugmittelverbundes is variable only in the region of the free loop of the second Zugmittelverbunds.

Under a free loop of the second Zugmittelverbunds here is a section of

Zugmittelverbund understood that runs through the roller assembly of the adjustment. In this case, this section is deflected and guided on a plurality of rollers of the roller assembly, each roller, which is in contact with this section, is independently rotatably mounted. This ensures that this section of the Zugmittelverbunds is freely movable.

Thus, the first Zugmittelverbund and the second Zugmittelverbund can run together on the traction sheave. After the adjustment by the adjusting mechanism is obtained by the rotation of the traction sheave then a steady moving, in particular lifting or lowering, the elevator cars while maintaining the set distance, which have the two elevator cars to each other.

Thus, there is also the advantage that the load of the first elevator car is received by the first Zugmittelverbund, while the load of the second elevator car is received by the second Zugmittelverbund. If an elevator cage frame is provided, in which the first elevator car is rigidly fastened, then the first Zugmittelverbund

For example, be connected to the elevator car frame. Because the second

Zugmittelverbund is connected to the second elevator car, thus resulting in a

Reduction of the mechanical load of the elevator car frame. Thus, the

Elevator cab frames are constructed in this respect with regard to its strength with reduced requirements. This makes a cost-effective design possible. Of the

Lift cage frame requires this also no special modification, so that the design effort is low. Advantageously, at least one can

Guide rail may be provided in the elevator car frame on which the second elevator car by the adjusting mechanism is movable relative to the elevator car frame. As a result, the relative positioning of the second elevator car with respect to the first elevator car is predetermined when the distance is adjusted via the adjusting mechanism. Apart from the executives, however, no additional load is transmitted to the elevator car frame by the second elevator car.

Furthermore, there is the advantage that the adjusting mechanism, for example, fixed to a

Shaft wall or in a machine room can be mounted. Thus, none are Components, in particular rollers or the like, required on the

Elevator car frame must be mounted to realize the adjustment mechanism. This leads to a further relief of the suspension and thus to reduced demands on the drive unit.

Furthermore, there is the advantage that with an engine unit, the actuation of both elevator cars is possible to move them in the designated driving space. in the

In contrast to a solution in which the two elevator cars are moved by mutually separate drive machine units, there is thus a significant reduction in costs and an improvement in safety, since collisions from the outset

excluded are. In this case, the adjusting mechanism, in particular the roller arrangement of the adjusting mechanism, can also be designed such that in the extreme position in which the two elevator cars are closest, a safety distance is still ensured. It is advantageous that the adjusting mechanism has a Versteilantrieb for adjusting at least one adjustable roller of the roller assembly. It is also advantageous that the

Roller assembly is designed so that by adjusting an adjustable roller of

Roller assembly, a length of a portion of the second Zugmittelverbunds within the roller assembly is variable. This can be realized with little design effort especially with a single adjustable role an adjustment.

It is also advantageous that the Versteilantrieb the adjusting mechanism is designed as a hydraulic Versteilantrieb. The Versteilantrieb can also be designed as a pneumatic Versteilantrieb. Furthermore, the Versteilantrieb a transmission, in particular a worm gear, and / or have a linear motor. If several Versteilantriebe, for example, for two or more adjustable elevator cars, provided, then in principle is also a

Combination of different actuator drives conceivable.

It is advantageous that a guide is provided in which the adjustable roller of

Roller assembly is guided. The guide can in this case be provided in an advantageous manner as a linear guide, so that the axis of rotation of the roller along a straight line is movable, which is oriented perpendicular to the axis of the roller. As a result, the adjustable roller of the roller assembly is guided linearly. Specifically, the guide can thus be configured as a horizontal guide, in which the adjustable roller of the roller assembly is guided horizontally. The role of the roller assembly is in this case horizontally and perpendicular to the axis of the roller movable. By moving the adjustable roller along the guide, in particular the linear guide or horizontal guide, the portion of the second Zugmittelverbunds within the roller assembly in an advantageous Manner be varied. Alternatively, the guide can be configured as a vertical guide, in which the adjustable roller of the roller assembly is guided vertically.

In addition, it is advantageous that the roller arrangement in this case has an upper roller and a lower roller, which are arranged in the projection on an axis along which the portion of the second Zugmittelverbunds between the adjusting mechanism and the second elevator car, arranged one behind the other, and that the adjustable role of the roller assembly in the

Projection is arranged on this axis between the upper roller and the lower roller. The respective angle of wrap on the upper roller and the lower roller can here

in particular an acute angle (ie less than 90 °). Specifically, therefore, with only three roles, namely the upper roller, the lower roller and the adjustable roller, the roller assembly can be realized. It is advantageous here, too, that the adjustable roller is adjustable in an adjustment position between the upper roller and the lower roller. This means that the

The wrap angle at the top roll and the wrap angle at the bottom roll are then comparatively small, but still significantly greater than 0 °. In this

Adjustment is thus the additional length of the second Zugmittelverbunds compared to a straight course of the second Zugmittelverbunds, which would be done without the roller assembly slightly adjacent to the first Zugmittelverbund low and at the same time can still be a metered response for adjusting the adjustable roller by means of the adjustment drive.

In one possible embodiment, an elevator cage frame is provided, wherein the first elevator cage is advantageously arranged in the elevator cage frame, and wherein the second elevator cage is connected to at least one of the elevator cage frames

Guide rail is guided. In this case, several, especially two, guide rails may be part of the elevator car frame. The first Zugmittelverbund can then in

be advantageously connected to the elevator car frame, wherein the first

Elevator car is arranged stationary relative to the elevator car frame.

Moreover, it is advantageous that the second Zugmittelverbund with the first

Elevator car is connected and that the second elevator car by the adjusting mechanism relative to the elevator car frame along the one guide rail or the guide rails of the elevator car frame is movable.

Preferred embodiments of the invention are described in the following description with reference to the accompanying drawings, in which corresponding elements with matching

Reference numerals are provided, explained in more detail. Show it: 1 shows an elevator installation in an elevator shaft in an abstract, schematic

Representation according to a first embodiment of the invention;

Fig. 2 is a partial representation of the elevator system shown in Fig. 1 according to the first embodiment of the invention and

FIG. 3 shows an adjusting mechanism of the elevator installation shown in FIG. 1 in an excerptional, schematic representation according to a second exemplary embodiment of the invention.

Fig. 1 shows an elevator installation 1 in an elevator shaft 2 of a building 3 in one

to be deduced, schematic representation according to a first embodiment. The elevator installation 1 has an elevator cage frame 4, a first elevator cage 5 and a second elevator cage 6. The elevator cars 5, 6 are in this case arranged on the elevator car frame 4. In this embodiment, both the first elevator car 5 and the second elevator car 6 are arranged inside the elevator car frame 4. Here, the first elevator car 5 is fixedly connected to the elevator car frame 4. As a result, the first elevator car 5 is arranged stationary relative to the elevator car frame 4.

The elevator car frame 4 has guide rails 7, 8 in this exemplary embodiment. In this embodiment, the second elevator car 6 is movable within the elevator car frame 4. Here is a certain safety distance between a top 9 of the first

Elevator car 5 and a bottom 1 0 of the second elevator car 6 predetermined. Fei ner is given a certain safety distance between an upper side 1 1 of the second elevator car 6 and an upper cross member 12 of the elevator car frame 4. Furthermore, lies in this

Embodiment, the first elevator car 5 with its bottom 13 to a lower cross member 14 of the elevator car frame 4 at.

The movable within the elevator car frame 4 second elevator car 6 is performed in this embodiment on the guide rails 7, 8. Thus, a positioning of the two elevator cars 5, 6 is always ensured to each other, although a distance 1 5 between the two elevator cars 5, 6 is still changeable. The distance 15 is here as a distance 1 5 between the top 9 of the first elevator car 5 and the bottom 10 of the second

Elevator car 6 defined. However, the distance 15 can also be determined in other ways. For example, the distance 1 5 not only, as in this embodiment, be regarded as a vertical distance 15, but as obliquely to be measured distance 15, as may be useful for example in an inclined elevator. In the elevator shaft 2, a driving space 16 is provided whose lateral boundaries 17, 18 are illustrated by broken lines. When moving through the

Elevator shaft moves the elevator car frame 4 with the elevator cars 5, 6 through this

Driving room 16.

Thus, the first elevator car 5 and the second elevator car 6 can be moved one above the other for the driving space 16 provided for the joint travel of the first elevator car 5 and the second elevator car 6. The joint mobility is ensured in this embodiment, characterized in that the two elevator cars 5, 6 are located in the elevator car frame 4.

The elevator installation 1 also has a drive machine unit 20. The

Drive machine unit 20 includes a traction sheave 21. Furthermore, the elevator installation 1 has a plurality of traction means 22, which are in a first Zugmittelverbund 23 and a second

Zugmittelverbund 24 are divided. The traction means 22 run together on the traction sheave 21. The number of traction means 22 and the numerical distribution to the Zugmittelverbünde 23, 24 can be determined here in a convenient manner. In the traction sheave 21 a corresponding number of grooves is then provided to allow a uniform power transmission and trouble-free operation.

The elevator installation 1 also has a counterweight 25 and a deflection roller 26. The

Traction means 22 are guided between the counterweight 25 and the guide roller 26 via the drive pulley 21. This results for each of the traction means 22 and thus also for the first Zugmittelverbund 23 and the second traction means composite 24 respectively the same

Wrap angle on the traction sheave 21.

One end 27 of the first Zugmittelverbunds 23 and one end 28 of the second Zugmittelverbunds 24 are connected to the counterweight 25. The other end 29 of the first Zugmittelverbunds 23 is connected to the upper cross member 12 of the elevator car frame 4. The other end 30 of the second Zugmittelverbunds 24 is connected to the second elevator car 6. Here, the second Zugmittelverbund 24 is suitably on the upper cross member 12 of the

Elevator car frame 4 passed. Furthermore, the connection of the end 29 of the first Zugmittelverbunds 23 with the upper cross member 12 can also be made indirectly. The end 29 of the first Zugmittelverbunds 23 is thus at least indirectly connected to the first elevator car 5, which is the case in this embodiment by means of the elevator car frame 4. Furthermore, the end 30 of the second Zugmittelverbunds 24 indirectly with the second

Elevator car 6 be connected. For example, the second elevator car 6 with a Carrier to be connected, which is guided on the guide rails 7, 8 and with which the end 30 of the second Zugmittelverbunds 24 is connected.

The second elevator car 6, which is movable within the elevator car frame 4, is not necessarily arranged above the first elevator car 5. If, inter alia, the cable guidance of the traction mechanism assemblies 23, 24 is possible, then the adjustable, second elevator cage 6 can also be arranged below the first elevator cage 5. A lifting or lowering of the second elevator car 6 relative to the first elevator car 5 or relative to the

Elevator cage frame 4 then has the opposite effect in a reduction or enlargement of the distance 15 between the elevator cars 5, 6.

For raising or lowering the second elevator car 6 relative to the elevator car frame 4, the elevator installation 1 has an adjustment mechanism 35. The adjusting mechanism 35 has in this embodiment, a roller assembly 36 which includes an upper roller 37, a lower roller 38 and an adjustable roller 39. In addition, the adjusting mechanism 35 has an adjusting drive 40, which interacts with the adjustable roller 39. By Versteilantrieb 40 an adjustment of the adjustable roller 39 along an axis 41 is possible, as illustrated by the double arrow 42.

The second Zugmittelverbund 24 is guided by the adjusting mechanism 35. Here, the second Zugmittelverbund 24 passes over the rollers 37, 38, 39 of the roller assembly 36 and forms a free loop .. A portion 43 of the second Zugmittelverbunds 24 is located between the lower roller 38 of the roller assembly 36 and the second elevator car 6. If the

Adjustment 40 adjusts the adjustable roller 39 along the axis 41, then a portion 44 of the second traction means composite 24, which is located in the roller assembly 36, correspondingly longer or shorter. This affects a length 45 of section 43 of the second

Zugmittelverbunds 24 off. When the traction sheave 21 is stationary, the extension of the section 44 has an immediate effect on a shortening of the length 45 and vice versa. The increase in the length 45 is then equal to the shortening of the distance 15 between the elevator cars 5, 6. Accordingly, the reduction in the length 45 is equal to the increase in the distance 15 between the elevator cars 5, 6. Possible rotations of the traction sheave 21 can to be superimposed. Thus, the Verste! Lmechanismus 35 acts so with the second Zugmittelverbund 24 together that the length 45 of the portion 43 of the second Zugmittelverbunds 24 between the adjustment mechanism 35 and the second elevator car 6 is variable. Thus, the effect

Adjusting mechanism 35 also together with the second Zugmittelverbund 24 that the distance 15 between the first elevator car 5 and the second elevator car 6 is variable. The adjusting mechanism 35 is arranged stationarily in the elevator shaft 2. In a modified embodiment, the adjusting mechanism 35 may also be wholly or partially outside the elevator shaft 2, in particular in a machine room, housed.

Thus, the adjustment mechanism 35 is fixed to the building 3 and arranged relative to the driving space 16 stationary. The individual components, in particular the rollers 37, 38 and the

Adjustment drive 40, are here attached in a suitable manner.

The embodiment of the elevator installation 1 according to the first embodiment is in

Below also described with reference to FIG. 2 on.

Fig. 2 shows a partial representation of the elevator installation 1 shown in Fig. 1 according to the first embodiment. Here, the adjusting mechanism 35, the guide roller 26 and the second Zugmittelverbund 24 are shown. The first Zugmittelverbund 23 is not shown for clarity in FIG. 2. In this embodiment are

Mounting bracket 50, 51, 52 provided to mount the adjustment mechanism 35 in the elevator shaft 2. Here, the upper roller 37 is rotatably mounted on the mounting bracket 50. The lower roller 38 is rotatably mounted on the mounting bracket 52. On the mounting bracket 51, a guide 53 is provided, in which an axis 54 of the adjustable roller 39 is guided. In this case, a guide on both sides is preferably provided at the two ends of the axle 54. The axis 54 is in this case perpendicular to the axis 54 along the axis 41 adjustable.

The Versteilantrieb 40 has a rod 55 which in this Ausfühnings beispie! is designed as a pull rod 55. The pull rod 55 is connected to a piston 56 of the Versteilantriebs 40, which is guided in a piston bore 57 along the axis 41. The piston 56 defines a space 58 in the piston bore 57. Furthermore, the adjusting drive 40 has a hydraulic pump 59 with alternating direction of rotation and a tank 60. From the tank 60 pressurized fluid can be passed through the pump 59 in the space 58. This results in an adjustment of the piston 56 and thus the pull rod 55 in one direction 61. In the other direction, the pump 59 promotes the pressurized fluid from the space 58 back into the tank 60. At the given

Roller assembly 36 acts on the adjustable roller 39 and the pull rod 55 in any case a restoring force against the direction 61. This restoring force then leads according to the returned pressurized fluid to a provision of the piston 56 against the direction 61. The adjustment drive 40 thus acts against the restoring force of the roller assembly 36th ,

Alternatively, the hydraulic pump 59 can pump pressurized fluid between the right space 58 and a left space separated from the piston 56. In this embodiment, the tank 60 can be omitted. Advantageously, the Verstellati gear 40 can not only against the Restoring force of Rollenanordniing 36, but also act in the direction of the restoring force. Thus, the provision of the piston 56 can be actively supported by Verstellanstrieb 40.

When the traction sheave 21 is stationary, then, starting from the position of the adjustable roller 39 shown in FIG. 2, an adjustment in the direction 61 as well as in the direction 61 can take place. Here is an adjustment 62 against the direction 61 available. Furthermore, an adjustment path 63 in the direction 61 is available. According to that

Geometric context, in which inter alia the wrap angles on the rollers 37, 38, 39 are relevant, translates an adjustment of the roller 39 from the illustrated

Starting position opposite to the direction 61 in an increase in the length 45 of the portion 43 of the second Zugraittelverbuods 24. Accordingly, an adjustment translates in the direction 61 in a reduction in the length 45 of the portion 43 of the second Zugmittelverbunds 24. If a rotation of the traction sheave 21 in such an adjustment is permissible for tax purposes,

is still superimposed on the common running of the traction means 22, so both the first

Zugmittelverbunds 23 and the second Zugmittelverbunds 24. Considered in itself leads but also with rotating drive pulley 21, the adjustment of the adjustable rollers 39 of

Roller assembly 36 for increasing or decreasing the length 45 of the portion 43 of the second Zugmittelverbunds 24, which only amplified by the rotation of the traction sheave 2 1,

is compensated or overcompensated. Relevant here is that the adjustment of the adjustable roller 39 only on the second Zugmittelverbund 24, but not on the first

Zugmittelverbund 23 effects. In contrast, a rotation of the traction sheave 21 equally affects both the first Zugmittelverbund 23 and the second

Zugmittelverbund 24 off.

In this embodiment, the guide 53 is designed as a linear guide 53. In the linear guide 53, the roller 39 of the roller assembly 36 is guided linearly, namely along the axis 41. In this embodiment, the guide 53 is designed as a horizontal guide 53. In the horizontal guide 53, the adjustable roller 39 of the roller assembly 36 is guided horizontally. Needless to say, guide 53 can also be designed as a vertical guide. In the

Vertical guide, the adjustable roller 39 of the roller assembly 36 is guided vertically.

In a modified embodiment of the amplifying mech n 35, in particular the

Adjustment drive 40, can also be a non-linear guide appropriate. For example, a guide of the adjustable roller 39 along an arc, in particular a

Arc, to be realized. Furthermore, the guide 53 can also serve to absorb a part of the force acting on the axis 54 of the adjustable roller 39 by the second tensioning means 24. Furthermore, the Versteilantrieb 40 in a modified embodiment also as be formed pneumatic adjustment drive 40.

The roller assembly 36 is designed in this embodiment so that the upper roller 37 is disposed in a vertical extension directly above the lower roller 38. The section 43 of the second traction mechanism composite 24 extends along an axis 64. The second traction mechanism assembly 24 may also be located on the axle 64 between the guide roller 26 and the upper roller 37.

For the adjustable roller 39, an end position 65 in the vicinity of the axis 64 is predetermined. Another end position 66 of the adjustable roller 39 is set further away from the axis 64.

Here are the end positions 65, 66 in this embodiment along the axis 41 on the same side, namely to the right of the axis 64. When these rollers 37, 38, 39 are projected with respect to their position on the axis 64, then there is the adjustable role This applies in this embodiment for all possible positions of the adjustable roller 39. In the given by the end position 65 adjustment position 65, the adjustable roller 39 is even between the upper roller 37 and the lower roller 38 arranged. For this purpose, the pressurized fluid is largely conveyed from the space 58 into the tank 60 until the adjustable roller 39 is stiffened in the adjustment position between the upper roller 37 and the lower roller 38. The lower roller 38, the adjustable roller 39 and the upper roller 37 are then arranged aligned with the axis 64 when taking the adjustment position 65. The case of the rollers 37, 38, 39 occurring

Wrap angles are in the end position 65 of the adjustable roller 39 in the limited by the guide 53 possibilities each minimal, but still not vanishing. Thus, the cable course of the second Zugmittelverbunds 24 within the

Roller assembly 36 can be changed. The change of the rope course takes place through the

Actuator 40. Since the adjustment 40 and the roller assembly 36 fixed in the

Elevator shaft 2 are arranged, this results in no increase in mass and thus the weight forces emanating from the elevator car frame 4 with the first elevator car 5 and the second elevator car 6. In addition, there is an improved distribution of

Weight forces, since the elevator car frame 4 is suspended with the first elevator car 5 on the first Zugmittelverbund 23, while the second elevator car 6 at the second

Zugmittelverbund 24 is suspended. As a result, the security can be increased. Because even with a malfunction in the area of the adjusting mechanism 35, the second

Elevator car 6 over the elevator car frame 4 reliably held in the elevator shaft 2. If, for example, a rope slip occurs in the second traction mechanism 24, the maximum possible drop height of the second elevator car 6 still remains due to its arrangement within the traction mechanism Elevator car frame 4 limited.

Thus, the distance 15 between the elevator cars 5, 6 can be varied in an advantageous manner. In a building with different pfzeichksabständen thus an adjustment of the distance 15 can be made to allow a simultaneous entry and exit or a loading and unloading from or to the deduction cabins 5, 6 on different, in particular adjacent, floors. The adjusting mechanism 35 can be designed not only hydraulically or pneumatically, but also in other ways. Another possibility for the embodiment of the adjustment mechanism 35 is described in more detail below with reference to FIG. 3.

Fig. 3 shows an adjusting mechanism 35 and the adjustable roller 39 and the second

Zugmittelverbund 24 of the elevator installation 1 according to a second embodiment in a partial, schematic representation. In this embodiment, the

Adjusting drive 40 of the adjusting mechanism 35 is designed as a mechanical adjusting drive 40 with a gear designed as a worm gear 70. An electric motor 71 of the

Adjustment drive 40 generates an output torque 73 on an output shaft 72. The

Worm gear 70 translates this output torque 73 into a moment 74, the one

Worm shaft 75 drives. The worm shaft 75 is partially inserted into a tube 76. The tube 76 is rotationally fixed, but slidable along the axis 41. The tube 76 cooperates with the worm shaft 75 such that an adjustment of the tube 76 in the direction 61 is made possible via the moment 74. In a reverse direction of rotation of the electric motor 71, the tube 76 is actuated against the direction 61. As a result, an adjustment of the axis 54 of the adjustable roller 39 within the range given by the guide 53 is possible. This embodiment has the advantage of a large self-locking.

In a modified embodiment of the electric motor 71 may be configured as a linear motor 71, so that the worm gear 70 may be omitted. Such a linear motor 71 can then also act directly on the tube 76 or the rod 55 (FIG. 2).

The invention is not limited to the described embodiments and modifications.

Claims

claims

1. elevator installation (1) with a first elevator car (5), at least one second elevator car (6), a drive machine unit (20) and several via a traction sheave (21) of

Drive machine unit (20) running traction means (22), wherein the first elevator car (5) and the second elevator skis (6) on the other of the drive unit (20) by means of the traction means (22) in one for the common ride of the first elevator car (5) and The traction means (22) in a first Zugmittelverbund (23) and at least a second Zugmittelverbund (24) are divided, that at least one relative to the driving space (16) fixed adjustment mechanism (35) provided between the traction sheave (21) and the second elevator car (6) with the second

Zugmittelverbund (24) cooperates, and the adjusting mechanism (35) with the second Zugmittelverbund (24) cooperates so that a distance (15) between the first elevator car (5) and the second elevator car (6) is variable,

characterized,

that the distance (15) is adjustable independently of the traction sheave (21), in particular also when the traction sheave (21) is stationary.

2. Elevator installation according to claim 1,

characterized,

in that the adjusting mechanism (35) interacts with the second traction means collar (24) such that a length (45) of a section (43) of the second traction mechanism assembly (24) is variable between the adjusting mechanism (35) and the second elevator cage (6).

3. Elevator installation according to claim 1 or 2,

characterized,

in that the adjusting mechanism (35) has a roller arrangement (36) through which the second traction mechanism (24) runs and in that the roller arrangement (36) has at least one adjustable roller (39).

4. elevator installation according to claim 3,

characterized,

that the second Zugmittelverbund (24) passes through the roller assembly (36) and in this case a free Forms loop, wherein the adjustable roller (39) in the region of the free loop with the second Zugmittelverbund (24) cooperates.

5. Elevator installation according to claim 3 or 4,

characterized,

in that the adjusting mechanism (35) has at least one adjusting drive (40) for adjusting the at least one adjustable roller (39) of the roller arrangement (36).

6. elevator installation according to claim 5,

characterized,

at least one adjustment drive (40) is designed as a hydraulic adjustment drive (40) and / or that at least one adjustment drive (40) is designed as a pneumatic adjustment drive (40) and / or that at least one adjustment drive (40) has a transmission (70) and or that at least one adjusting drive (40) has a worm gear (70) and / or that at least one adjusting drive (40) has a linear motor (71).

7. elevator installation according to one of claims 3 to 6,

characterized,

in that the roller arrangement (36) is designed in such a manner that a length of a section (44) of the second traction mechanism (24) within the roller arrangement (36) can be varied by adjusting the at least one adjustable roller (39) of the roller arrangement (36).

8. Elevator installation according to one of claims 3 to 7,

characterized,

in that at least one guide (53) is provided in which at least one adjustable roller (39) of the roller arrangement (36) is guided.

9. Elevator installation according to one of claims 3 to 8,

characterized,

in that at least one linear guide (53) is provided in which at least one adjustable roller (39) of the roller arrangement (36) is guided at least linearly.

10. Elevator installation according to one of claims 1 to 9,

characterized,

in that at least one horizontal guide (53) is provided in which at least one adjustable roller (39) of the roller arrangement (36) is guided at least approximately horizontally.

1 elevator installation according to one of claims 3 to 10,

characterized,

in that the roller arrangement (36) has an upper roller (37) and a lower roller (38) projecting on an axis (64), along which the section (43) of the second belt connection (24) between the adjusting mechanism ( 35) and the second elevator car (6) are arranged one behind the other, and in that the adjustable roller (39) of the roller assembly (36) projecting on this axis (64) between the upper roller (37) and the lower roller (38 ) is arranged.

12. Elevator installation according to claim 1 1,

characterized,

in that the adjustable roller (39) is adjustable in an adjustment position (64) between the upper roller (37) and the lower roller (38).

13. Elevator installation according to one of claims 1 to 12,

characterized,

in that an elevator cage frame (4) is provided, that the first elevator cage (5) is arranged at least partially in the elevator cage frame (4), and that the second elevator cage (6) is connected to at least one guide rail (7, 8) connected to the elevator cage frame (4) ) is guided.

14. Elevator installation according to claim 13,

characterized,

in that the first traction mechanism (23) is connected to the elevator cage frame (4) and that the first elevator cage (5) is arranged stationary relative to the elevator cage frame (4).

15. Elevator installation according to claim 13 or 14,

characterized,

in that the second traction mechanism (24) is connected to the second elevator car (6) and that the second elevator car (6) is connected by the adjusting mechanism (35) relative to the second traction mechanism (24)

Elevator car frame (4) along the at least one guide rail (7, 8) which is connected to the elevator car frame (4) is movable.