EP3924285B1 - Elevator system - Google Patents

Description

The invention relates to an elevator system having the features of the preamble of claim 1.

The EP 2219985 B1 describes an elevator system with two elevator cars that can be displaced in a vertical direction in an elevator shaft, a self-contained suspension element guided around a lower deflection roller and an upper deflection roller, a drive machine in the form of an electric motor assigned to the suspension element, and a controllable coupling device arranged on each elevator car. The support means has several coupling elements, which can be designed as holes or cams, for example. A coupling device of an elevator car can be coupled to and uncoupled from a coupling element, with which a drive connection between the respective elevator car and the suspension element can be established and released. An elevator car coupled to a suspension element can thus be displaced in the first elevator shaft by means of the suspension element that can be driven by the respective drive machine.

The elevator cars are only moved in one direction in the named elevator shaft, ie only upwards or only downwards. In order to be able to operate the elevator cabins in a circulating manner, the elevator system has an additional elevator shaft. The elevator cars can be moved horizontally between the two elevator shafts by means of a transfer device. During operation of the elevator system, an elevator car is coupled to a suspension element at a lower or an upper end position via its coupling device and a coupling element and is displaced upwards or downwards by the associated drive machine via the suspension element until it reaches the upper or lower end position has reached. There the elevator car is uncoupled from the suspension element and is horizontally shifted by a transfer device into the elevator shaft for the other direction of displacement into the other elevator shaft.

As described above, the described coupling elements of the suspension means can be connected to an elevator car via a coupling device. This Coupling elements are referred to below as connected coupling elements. As described above, the coupling elements can also not be coupled to an elevator car. These coupling elements are referred to below as free coupling elements.

When the mentioned elevator system is in operation, ie when one or more elevator cars are shifted in the elevator shaft, both connected and free coupling elements are shifted in the elevator shaft. When shifting the elevator cabins, vibrations in the suspension elements can occur. The connected coupling elements are prevented from swinging by their coupling to an elevator car. Without suitable countermeasures, the free coupling elements would follow the vibrations of the suspension element. This could result in a free coupling element hitting an elevator car when driving past it, or in a free coupling element hitting the elevator shaft. Such an impact could on the one hand lead to an audible impact and on the other hand could cause damage to the elevator car and/or the elevator shaft and/or the coupling element.

In contrast, it is the object of the invention, in particular, to propose an elevator system that enables comfortable and at the same time reliable operation of the elevator system. According to the invention, this object is achieved with an elevator system having the features of claim 1.

The elevator system according to the invention has an elevator car that can be displaced in an elevator shaft, a suspension element running in the elevator shaft, a drive machine assigned to the suspension element, and a controllable coupling device arranged on the elevator cabin. The suspension element has a coupling element to which the coupling device can be coupled and uncoupled, with which a drive connection between the elevator car and the suspension element can be established and released. The coupled elevator car can be displaced in the elevator shaft by means of the suspension means that can be driven by the drive machine.

According to the invention, the elevator system has a guide system for guiding the coupling element when it is displaced in the elevator shaft. The management system has a stationary guide compared to the elevator shaft and one with the Coupling element connected via a connection and guided along the guide. The connection between the coupling element and the runner is designed in such a way that a relative movement between the runner and the coupling element is possible. The mentioned connection can thus also be referred to as a flexible connection.

The guide system mentioned advantageously prevents a free coupling element from hitting an elevator car and the elevator shaft during displacement in the elevator shaft and thus enables particularly comfortable operation of the elevator system. Connected coupling elements are firmly coupled to an elevator car and thus participate in all movements of the corresponding elevator car. When moving in the elevator shaft, elevator cars are usually guided along car guide rails, which can be aligned with respect to the guide of the coupling element. Nevertheless, the corresponding elevator car can shift and/or tilt relative to the guidance of the coupling element. Such displacements and/or tilting can be caused, for example, by uneven load distribution within the cabin. The flexible connection of the coupling element to the runner according to the invention enables compensation for the described shifting and/or tilting of the elevator car and thus of the coupling element with respect to the guidance of the guide system of the coupling element. Since the elevator car can exert large forces on the coupling element during the described shifting and/or tilting due to its mass, damage to the guide system of the coupling element could occur without the compensation described. For example, the runner and/or the guide could be damaged, which could lead to failure of the elevator system. The flexible connection of the runner to the coupling element according to the invention prevents such damage to the guide system of the coupling element and thus failures of the elevator system. In addition to particularly convenient operation, this also enables particularly reliable operation of the elevator system.

In this context, a guide that is stationary relative to the elevator shaft is to be understood as meaning that the guide is not movable in the elevator shaft. The guide can be designed, for example, as a guide rail that is fixed, for example screwed, to a shaft wall of the elevator shaft. It is also possible that the guide is formed by the shaft wall itself. For this purpose, the shaft wall can have a special guide surface, for example.

The runner can also be referred to as a trolley. The runner can have, for example, one or more guide rollers that roll on the guide and are thus guided by it. It is also possible for the runner to have a sliding surface along which the guide slides and is thus guided by it.

Said connection, via which the runner is connected to the coupling element, can be designed, for example, as an axle in the form of a pin, which can be moved in at least one direction relative to the coupling element. The mentioned relative movement between the runner and the coupling element has in particular at least one horizontal component. It is also particularly limited.

In particular, the elevator system has more than one elevator car, ie, for example, two to eight elevator cars, which are basically identical in structure and all have a coupling device. In particular, the elevator system has more than one elevator shaft, specifically two elevator shafts, between which the elevator cars can be moved by means of transfer devices. In particular, a transfer station is arranged at both ends of the elevator shafts, so that a circulating operation of the elevator cars is possible. For this purpose, the elevator cars are shifted only from bottom to top in a first elevator shaft and only from top to bottom in a second elevator shaft. When the upper or lower end of the respective elevator shaft is reached, the elevator cars are moved to the other elevator shaft by means of a transfer station.

The elevator shaft or elevator shafts are arranged in or on a building and run mainly in the vertical direction, so that the elevator cars are mainly displaced vertically when they are moved in the elevator shaft.

The suspension element is in particular self-contained, that is, for example, designed in the shape of a ring. It can thus also be described as endless. However, this does not necessarily mean that it is designed as a homogeneous ring or consists of only one piece. The suspension means is in particular a lower and an upper deflection roller out, with at least one deflection roller serving as a drive roller or traction sheave, via which the suspension element can be driven by the drive machine assigned to it. In particular, the deflection rollers have an effective diameter of less than 100 mm. Such small effective diameters of a deflection pulley serving as a traction sheave enable a gearless drive of the suspension element, which requires little installation space. In particular, a tensioning device can be arranged on the suspension element, with which on the one hand the required suspension element pretension is generated and on the other hand deviations in the original length of the self-contained suspension element and operational plastic length changes of the suspension element are compensated for. The required tensioning forces can be generated, for example, with tensioning weights, gas springs or metal springs.

The drive machine is designed in particular as an electric motor that is controlled by an elevator controller. The elevator control controls the entire operation of the elevator system, so it controls all controllable components of the elevator system and is connected to switches and sensors of the elevator system. The elevator control can be designed as a single central elevator control or consist of several decentralized controls that are responsible for subtasks.

The coupling devices arranged on the elevator car(s) are arranged in particular on a floor or a roof of the elevator car and are controlled by the elevator control mentioned above. The coupling to a coupling element of the suspension element in a coupled position of the coupling device takes place in particular in a form-fitting manner, with a friction-fitting coupling also being conceivable. The coupling element has, in particular, a mainly horizontally oriented recess into which, for example, an extendable and retractable bolt of the coupling device can enter in an actuation direction. In this case, the coupling device is in its coupled position when the bolt of the coupling device enters the recess of the coupling element and in its uncoupled position when the bolt does not enter the recess.

A positive or frictional connection between the elevator car and the suspension element can thus be produced via the coupling device and the coupling element be so that with a shift or movement of the propellant and the elevator car is shifted. A drive connection between the elevator car and the suspension element, and thus ultimately between the elevator car and the drive machine assigned to the suspension element, can thus be established and also released again. The coupling devices are controlled in particular in such a way that, at least during the displacement of an elevator car, only one elevator car is coupled to a (single) suspension element. In particular, only one (single) elevator car is ever shifted in the shaft by a (single) suspension element.

A coupling element of a suspension element is designed in particular as a connecting element which connects two free ends of the suspension element to one another. The use of a self-contained suspension means makes it possible to dispense with a counterweight that has to be guided past the elevator car, which allows for a small cross-section of the elevator shaft. In addition, the coupling element designed in this way fulfills a dual function. On the one hand, it serves to couple the elevator car to the suspension element and, on the other hand, to realize the closed suspension element in a simple and cost-effective manner.

In particular, the coupling element fulfills the function of a so-called belt lock or a cable connector. In this way, a self-contained suspension element can be produced very simply, inexpensively and safely from an originally open, elongated suspension element by connecting the two free ends with the coupling element. The coupling element can, for example, have two suspension element end connections connected to one another, which, for example, correspond to EP 1634842 A2 can be executed. The two suspension element end connections can be connected, for example, via an intermediate piece to which they can be screwed or welded, for example. The coupling element can also have a one-piece housing.

In an embodiment of the invention, the guidance of the guidance system runs along a shaft wall of the elevator shaft. Said connection between the coupling element and the runner is designed in such a way that a first relative movement between the runner and the coupling element is possible with at least one component in the direction towards the said shaft wall and away from the shaft wall. With that can advantageously frequently occurring movements of the elevator car and thus of the coupling element in the direction of the shaft wall and away from the shaft wall. This enables a particularly safe operation of the elevator system.

The named component of the direction runs in particular mainly perpendicularly to the shaft wall and thus mainly horizontally. The relative movement mentioned runs in particular only towards the shaft wall and away from the shaft wall and thus in particular only perpendicularly to the shaft wall. However, it can also have a component that is aligned along the shaft wall, that is to say running at an angle to the shaft wall or along a circular path.

The guide is designed in particular as a guide rail that is fixed to the shaft wall, for example screwed on. The named direction of the component of the relative movement thus also runs in the direction of the guide rail and away from the guide rail. The statements regarding the alignment of the relative movement with respect to the shaft wall thus apply analogously to an alignment of the relative movement with respect to the guide rail. The relative movement also runs in particular in the above-mentioned actuation direction, in which a bolt of the coupling device can be extended and retracted for coupling to a coupling element.

In this context, a shaft wall should be understood to mean a delimitation of the elevator shaft in the horizontal direction. A shaft wall is designed in particular as a solid wall, for example made of concrete. However, it is also possible for a shaft wall to be formed solely from a plurality of crossbeams, to which, for example, car guide rails can be fixed. This can occur in particular when several elevator shafts are arranged next to one another and the individual elevator shafts are separated from one another by crossbeams.

In an embodiment of the invention, the connection between the coupling element and the runner has a pin which is coupled to the runner and in a recess in the coupling element in the direction of the said shaft wall and away from the shaft wall is arranged away slidably. This enables a particularly simple and therefore cost-effective, flexible connection.

In order to couple said pin to the runner, the pin can be fixed to the runner, for example screwed on. It is also possible that the runner is designed as a guide roller which is rotatably arranged on the pin. In addition, the runner can also have a lever which is pivotably arranged on the pin.

In particular, not the entire pin but only part of the pin is arranged in said recess. The recess is designed in particular as a through opening through which the pin protrudes. In particular, the pin is secured against leaving the through-opening.

In an embodiment of the invention, the connection has a first spring arrangement, which is designed and arranged in such a way that it can apply a force to the runner in the direction of the first relative movement. Relative movements that occur between the rotor and the coupling element can thus be cushioned in the direction of the first relative movement. This enables the runner to be guided particularly smoothly.

In particular, the first spring arrangement has a first spring which pushes the runner away from the coupling element. This can prevent the rotor from bumping into the coupling element, which could cause annoying noises. In particular, the first spring arrangement also has a second spring, which pulls the runner towards the coupling element. In this way, relative movements of the rotor away from the coupling element can also be cushioned. In addition, a rest position of the runner can be set in the direction of the first relative movement, which the runner assumes when no other forces are acting on it, by appropriately designing the first and second springs.

In an embodiment of the invention, the guide runs along a shaft wall of the elevator shaft. The connection between the coupling element and the runner is designed in such a way that a second relative movement between the runner and the coupling element along the shaft wall mentioned has at least one horizontal component is possible. The enabling of a second relative movement between the runner and the coupling element enables a particularly comfortable and reliable operation of the elevator system.

The above statements regarding the guide, the guide rail and the shaft wall also apply to this embodiment of the invention.

Said relative movement can, in particular, run horizontally and thus only have a horizontal component. It then runs mainly parallel to said shaft wall. However, it can also have a vertical component or run along a circular path.

The connection between the coupling element and the runner is designed in particular in such a way that a first relative movement between the runner and the coupling element has at least one component in the direction of the shaft wall mentioned and away from the shaft wall and, in addition, a second relative movement between the rotor and the coupling element along the shaft wall mentioned has at least one component horizontal components are possible. However, it is also possible that only the first relative movement mentioned or the second relative movement mentioned is possible.

In an embodiment of the invention, the guide guides the runner in the direction of the first relative movement and in the direction of the second relative movement between the runner and the coupling element. This enables a particularly reliable guidance of the runner and thus of the coupling element. This leads to a particularly comfortable operation of the elevator system. Guidance of the runner in the direction of the first and second relative movement is to be understood here as meaning that the runner cannot be displaced or can only be displaced to a very limited extent with respect to the guide in the direction of the first and second relative movement. In the case of a vertically running guide, the runner can thus be displaced mainly only vertically.

In an embodiment of the invention, said recess, which at least partially accommodates the above-mentioned pin, is arranged on a swivel arm of the coupling element, which can be swiveled along said shaft wall. This allows the two relative movements described to be particularly simple and implement at low cost.

In an embodiment of the invention, the connection has a second spring arrangement, which is designed and arranged in such a way that it can apply a force to the runner in the direction of the second relative movement. Relative movements that occur between the rotor and the coupling element can thus be cushioned in the direction of the second relative movement. This enables the runner to be guided particularly smoothly.

The second spring arrangement has, in particular, a third and a fourth spring which act in opposite directions to one another. By appropriately designing the third and fourth springs, a rest position of the runner can be set in the direction of the second relative movement, which the runner assumes when no other forces are acting on it.

In an embodiment of the invention, the guide has a side cheek and the runner has a guide roller, the guide roller being guided on an inside of the side cheek of the guide. This enables a simple implementation of the guide.

In this context, a side cheek is to be understood as meaning a section of the guide which protrudes away from the shaft wall and into the elevator shaft.

In an embodiment of the invention, the guide has in particular a first side cheek and an opposite second side cheek and the runner has a first guide roller and a second guide roller. The first guide roller is guided on the inside of the first side cheek of the guide and the second guide roller on the inside of the second side cheek of the guide. The guidance by means of two guide rollers enables a particularly good guidance of the coupling element and thus a particularly comfortable operation of the elevator system.

In an embodiment of the invention, the first guide roller is mounted on a first roller axis and the second guide roller is mounted on a second roller axis. The two roller axes are arranged on a lever of the runner that can be pivoted about a lever axis, with the two roller axes being in particular on the lever axis opposite sides of the lever are arranged. Thus, by pivoting said lever, the two guide rollers can be pivoted in the direction of the side walls of the guide or pivoted away from them.

In an embodiment of the invention, the lever axis of the pivotable lever of the runner is at least partially formed by the above-described pin of the connection between the coupling element and the runner. The pin thus has a dual function, which enables the rotor to be connected to the coupling element in a simple and cost-effective manner.

In an embodiment of the invention, the runner has a third spring arrangement, which is designed and arranged in such a way that the guide rollers are pressed against the insides of the side walls of the guide. This ensures that the guide rollers always roll on the side walls of the guide and cannot detach from them. This enables a particularly good guidance of the coupling element and thus a particularly comfortable operation of the elevator system.

The third spring arrangement has a fifth spring and in particular an additional sixth spring, which are tensioned in particular between the lever of the runner and the coupling element in such a way that they press the guide rollers against the insides of the side walls of the guide. If there is a sixth spring, it acts in the same direction as the fifth spring.

In an embodiment of the invention, the insides of the side walls of the guide have a concave contour and the guide rollers of the runner have a corresponding convex profile. On the one hand, this ensures that the contact between the guide rollers and the guide is as large as possible, which enables particularly good guidance of the coupling element and thus particularly convenient operation of the elevator system. In addition, due to their concave contour, the side walls enable simultaneous guidance in the named first direction and the named second direction of the relative movement between the runner and the coupling element. In this way, very precise guidance of the coupling element and thus particularly convenient operation of the elevator system can be made possible in a simple and cost-effective manner.

Further advantages, features and details of the invention result from the following description of exemplary embodiments and from the drawings, in which identical or functionally identical elements are provided with identical reference symbols. The drawings are merely schematic and not true to scale.

Fig. 1

einen ersten Aufzugschacht eines Aufzugssystems mit einer ersten und einer zweiten Aufzugkabine,

Fig. 2

ein Ankoppelelement eines Tragmittels aus Fig. 1 mit einem Läufer eines Führungssystems in einer vergrösserten Darstellung,

Fig. 3

eine Sicht von oben auf den ersten Aufzugschacht mit insgesamt acht Antriebmaschinen,

Fig. 4

eine Sicht von unten auf eine Aufzugkabine mit zwei Kopplungseinrichtungen zur Ankopplung an Ankoppelelemente der Tragmittel,

Fig. 5

ein Schnitt durch ein Ankoppelelement inklusive Führungssystem,

Fig. 6

eine Sicht von oben auf das Ankoppelelement inklusive Führungssystem aus Fig. 5 und

Fig. 7

eine Sicht auf einen Läufer in einer Führung des Führungssystems aus Richtung Ankoppelelement.

show:

1

a first elevator shaft of an elevator system with a first and a second elevator car,

2

a coupling element of a suspension element 1 with a slider of a guide system in an enlarged view,

3

a view from above of the first elevator shaft with a total of eight drive machines,

4

a view from below of an elevator car with two coupling devices for coupling to coupling elements of the suspension means,

figure 5

a section through a coupling element including the guide system,

6

a view from above of the coupling element including the guide system figure 5 and

7

a view of a runner in a guide of the guide system from the direction of the coupling element.

According to 1 an elevator system 10 has a first elevator shaft 12 in which a first elevator car 14 and a second elevator car 16 are arranged. The first elevator car 14 is located at a lower end position 18 which corresponds to a position of the elevator car 14 on a bottom floor of the building 20 having the elevator system 10 . The second elevator car 16 is located at an upper end position 22, which corresponds to a position of the elevator car 16 on a top floor of the building 20. Between the lower end position 18 and the upper end position 22 there are a large number of floors, which are 1 are not shown.

The elevator system 10 has a running in the vertical direction car guide rail 24 on which the elevator cars 14, 16 during a shift in Elevator shaft 12 are performed. To move the elevator cars 14, 16 in the elevator shaft 12, the elevator system 10 has a total of eight self-contained suspension means 26, of which in FIG 1 four support means 26 are shown. The support means 26 are designed as belts and are each guided around a lower deflection roller 28 and an upper deflection roller 30 .

The two deflection rollers 28, 30 of a support means 26 are arranged vertically one above the other, so that the support means 26 run vertically between the deflection rollers 28, 30. The deflection rollers 28, 30 have in particular an effective diameter of less than 100 mm. The lower deflection rollers 28 are arranged below the first elevator car 14 and are each connected to a tension weight 32 . The tensioning weight 32 acts as a tensioning device with which, on the one hand, the required suspension element pretension is generated and, on the other hand, deviations in the original length of the self-contained suspension element 26 as well as operational plastic length changes of the suspension element 26 are compensated.

The upper deflection rollers 30 are arranged above the second elevator car 16 and each serve as a traction sheave for a drive machine 34 designed as an electric motor. A drive machine 34 is assigned to each suspension element 26, by means of which the suspension element 26 can be driven and displaced. The drive machines 34 are controlled by a control device in the form of an elevator control 36 which controls all actuators of the elevator system 10 .

Each suspension element 26 consists of two suspension element parts 38, 40, the free ends 42 of which are connected by two, in 2 Coupling elements 44 shown enlarged are connected. The coupling element 44 consists of two suspension element end connections 46 aligned in opposite directions, which are connected to a connection element 50 having a recess 48 . The Tragmittelendverbindungen 46 can, for example, according to in the EP 1634842 A2 described suspension element end connections. An extendable bolt 60 of a coupling device 58 arranged on an elevator car 14, 16 can dip into the recess 48, with which the coupling device 58 is coupled to the coupling element 44. The coupling device 58 can be uncoupled from the coupling element 44 by pulling the bolt 60 out of the recess 48 . The Coupling devices 58 are arranged on a floor 51 of the elevator cars 14, 16 and in connection with the 4 described in more detail. A coupling element 44 to which a coupling device 58 has coupled has a filled-in square in the figures. In the 1 is thus the second elevator car 16 via a coupling element 44 with the in the 1 connected to the far left suspension means 26.

It is also possible for the coupling devices to be arranged on the roof of an elevator car. The positions of the coupling elements on the support means must then be adjusted accordingly.

As soon as an elevator car 14, 16 is coupled to a coupling element 44 via a coupling device 58 assigned to it, a drive connection between the elevator car 14, 16 and the suspension element 26 is established. In this coupled state, the elevator car 14, 16 is carried along by the suspension element 26 and is thus displaced in the elevator shaft 12 when the suspension element 26 is driven or displaced by the drive machine 34 assigned to it. in 1 The state shown can thus be shifted 16 in the elevator shaft 12, the second elevator car. Since the first elevator car is 14 in 1 is coupled to no support means 26 is in the state of 1 a displacement of the first elevator car 14 in the elevator shaft 12 is not possible.

The elevator cars 14, 16 each have a braking device 74, by means of which they can be fixed to the car guide rail 24 and thus within the elevator shaft 12.

In 3 a view from above of the first elevator shaft 12 with a total of eight drive machines 34 is shown. The drive machines 34 are each drive-connected to a traction sheave in the form of a deflection pulley 30 over which a suspension element 26 runs. For reasons of clarity, in the 3 the reference numbers shown only once. In each case four drive machines 34 are arranged on opposite sides of the elevator car 16 , with two drive machines 34 being arranged on different sides of the running car guide rail 24 on each of the opposite sides of the elevator car 16 . Drive axles 52 of the drive machines 34 run parallel to one another, with one drive machine each 34 is arranged on one side of the elevator car 16 coaxially to a drive machine 34 on the other side of the elevator car 16 . A car door, not shown, of the elevator car 16 is located on one or both free sides 54 of the elevator car 16, on which no drive machines 34 are arranged.

The elevator control 36 (see 1 ) always actuates two drive machines 34 on opposite sides in the same way or synchronously, so that the support means 26 assigned to them also move or are displaced synchronously. Two drive machines 34 are always controlled in the same way, which are arranged diagonally with respect to a center of gravity 56 of the elevator car, for example in 3 the upper, far left drive machine 34 and the lower, far right drive machine 34. With the eight drive machines 34, a total of four elevator cars 14, 16 can be displaced in the first elevator shaft 12 simultaneously and independently of one another.

In 4 a view from below of the elevator car 16 with two coupling devices 58 for coupling to coupling elements 44 of the suspension means 26 is shown. The coupling devices 58 are each opposite the in the 4 Not shown drive machines 34 and thus arranged opposite the coupling elements 44 of the support means 26. Each coupling device 58 has a bolt 60 which can be extended and retracted in an actuation direction 62 which is oriented in the direction of the coupling elements 44 . For extending and retracting the bolt 60, the coupling device 58 has an actuating actuator 64, which can be embodied as an electric motor, for example. To position the bolt 60 relative to the coupling elements 44, the bolt 60 together with the actuating actuator 64 can be displaced horizontally and perpendicularly to the actuating direction 62 along a rail 66 by means of a positioning actuator 68, which is also designed as an electric motor, for example.

In order to couple a coupling device 58 and thus the elevator car 16 to a coupling element 44 and thus to a suspension element 26 , the bolt 60 is first correctly positioned with respect to the corresponding coupling element 44 . Then the bolt 60 is extended, whereby the bolt 60 dips into the recess 48 of the coupling element 44 . This creates a positive connection between the coupling device 58 and the coupling element 44 and thus between the Elevator car 16 and the support means 26 made. When this form-fitting connection is established, the elevator car 16 can be displaced in the elevator shaft 12 .

As already in connection with 3 described, the elevator car 16 is always coupled to two support means 26 which are arranged diagonally with respect to the center of gravity 56 of the elevator car. This takes place in that the elevator car 16 is always coupled to coupling elements 44 which are arranged diagonally with respect to the center of gravity 56 of the elevator car 16 .

It is also possible that the bolts of the coupling devices cannot be moved. In this case, the coupling devices have separate bolts for each coupling element, or a coupling device is assigned to precisely one coupling element and thus precisely to one suspension element.

The drive machines and thus the suspension means can also be arranged on a side of the elevator car opposite the car door and thus the shaft door. In this case, an elevator car has, in particular, only one coupling device, so that an elevator car is coupled to only one suspension element for displacement in the elevator shaft.

In addition to a first elevator shaft 12 , the elevator system 10 has a second elevator shaft (not shown) that is arranged parallel to the first elevator shaft 12 . The second elevator shaft is designed analogously to the first elevator shaft 12 . The relocation of the elevator cars 14, 16 in the second elevator shaft is implemented analogously to the relocation in the first elevator shaft 12. In the first elevator shaft 12, the elevator cars 14, 16 are only shifted upwards and in the second elevator shaft only downwards.

In order to be able to implement a circulating operation of the elevator cars in the two elevator shafts, the elevator system 10 has two transfer devices, not shown, by means of which the elevator cars 14, 16 can be moved from the first to the second or from the second to the first elevator shaft. The transfer facilities can, in particular, correspond to the transfer facilities in Form of horizontal displacement units EP 2219985 B1 be executed.

A coupling element 46 is guided in the shift in the elevator shaft 12 by a management system 80, which in connection with the Figures 5 - 7 is explained.

According to Figures 5 and 6 a coupling element 46 is connected to a runner 82 of the guide 80 via a connection 81 . The runner 82 is guided in a guide in the form of what is known as a C-rail 83 . The C-rail 83 is attached to a shaft wall 84 of the in figure 5 not shown elevator shaft 12 screwed and fixed with it. It thus runs along the shaft wall 84 and is stationary relative to the elevator shaft 12. The runner 82 has a first, upper guide roller 85 and a second, lower guide roller 86, which are arranged on a lever 87 pivotable about a lever axis 88. For this purpose, the first guide roller 85 is mounted on a first roller axis 89 and the second guide roller 86 is mounted on a second roller axis 90 . The two roller axles 89 , 90 are arranged on opposite sides of the lever 87 with respect to the lever axle 88 .

As in 6 As can be seen, the C-rail 83 has two opposite side walls 91 which protrude from the shaft wall 84 into the elevator shaft 12 . Insides 92 of the side panels 91 have a concave contour. The two guide rollers 85, 86 of the runner 82 have a corresponding convex profile on their outer circumference, so that the guide rollers 85, 86 move from the C-rail 83 in a first direction 93 towards the shaft wall 84 and away from it and in a second direction 94 are guided horizontally transversely to or along the shaft wall 84.

The runner 82 has a third spring arrangement 95 with an upper, fifth spring 96 (only in 6 visible) and a lower, sixth spring 79 (only in figure 5 visible) The springs 96, 79 are tensioned between the lever 87 and the coupling element 46 in such a way that the guide rollers 85, 86 are pressed against the insides 92 of the side walls 91 of the C-rail 83. The spring assembly 95 is the 7 shown more clearly.

The connection 81 via which the runner 82 is connected to the coupling element 46 is, has a pin 97, which also forms the lever axis 88 of the pivotable lever 87 of the runner 82. A part of the pin 97 opposite the runner 82 protrudes through a recess in the form of a through opening 98 through a swivel arm 99 of the coupling element 46. The pin 97 is secured by a cap 100 screwed onto the end of the pin 97 opposite the runner 82. The pin 97 can be displaced to a limited extent in the recess 98 in the direction of the shaft wall 84 and away from the shaft wall 84 . It can therefore be displaced in the first direction 93 mentioned above. A first relative movement between the rotor 82 and the coupling element 46 in the first direction 93 is thus possible.

A first spring 101 in the form of a coil spring is arranged around the pin 97 between the lever 87 of the rotor 82 and the pivot arm 99 . The first spring 101 pushes the lever 87 and thus the runner 82 in the direction of the shaft wall 84. In addition, a second spring 102 in the form of a helical spring is arranged around the pin 97 between the pivot arm 99 and the cap 100 of the pin 97. The second spring 102 pushes the cap 100 of the pin 97 and thus the lever 87 and the runner 82 away from the wall 84 of the shaft. The first spring 101 and the second spring 102 thus form a first spring arrangement 103 of the connection 81.

The pivot arm 99 having the through-opening 98 can be pivoted about a pivot axis 104 which runs parallel to the through-opening 98 and thus to the pin 97 . The swivel arm 99 can thus perform a swiveling movement along a circular path around the mentioned swivel axis 104 and thus along the shaft wall 84 to a limited extent. The possible movement of the swivel arm 99 thus has a horizontal component as well as a vertical one. When pivoting the pivoting arm 99, the through-opening 98 and thus the pin 97 are also pivoted. The lever 87 of the rotor 82 is also pivoted with the pin 97 relative to the pivot axis 104 and thus relative to the coupling element 46 . When pivoting the pivot arm 99 about the pivot axis 104, the runner 82 thus performs a second relative movement with respect to the coupling element 46, which, as described, has a horizontal component.

A second spring arrangement 106 acts on the swivel arm 99, which is only 7 is shown. The spring assembly 106 includes a third spring 107 between Pivot arm 99 and a vertically extending component 108 of the coupling element 46 is arranged so that the pivot arm 99 in the 7 pushes to the left. The spring arrangement 106 also has a fourth spring 109 which is arranged on the side of the component 108 of the coupling element 46 facing away from the pivot arm 99 in such a way that it holds the pivot arm 99 in the 7 pushes to the right.

In 7 the third spring arrangement 95 is also clearly visible. The upper, fifth spring 96 and the lower, sixth spring 79 are tensioned between the outwardly projecting hook 110 of the lever 87 and the vertical component 108 of the coupling element 46 in such a way that the guide rollers 85, 86 press against the inner sides 92 of the side walls 91 of the C Rail 83 are pressed.

Finally, it should be noted that terms such as "comprising," "comprising," etc. do not exclude other elements or steps, and terms such as "a" or "an" do not exclude a plurality. Furthermore, it should be pointed out that features or steps that have been described with reference to one of the above exemplary embodiments can also be used in combination with other features or steps of other exemplary embodiments described above. Any reference signs in the claims should not be construed as limiting.

Claims (14)

1. Elevator system comprising

   - an elevator car (14, 16) which can be moved in an elevator shaft (12),

   - a suspension means (26) extending in the elevator shaft (12),

   - a drive machine (34) associated with the suspension means (26) and

   - a controllable coupling device (58) arranged on the elevator car (14, 16),

   the suspension means (26) having a coupling element (46) which the coupling device (58) can be coupled to and uncoupled from, as a result of which a drive connection between the elevator car (14, 16) and the suspension means (26) can be established and released, and the coupled elevator car (14, 16) being movable in the elevator shaft (12) by means of the suspension means (26), which can be driven by the drive machine (34),

   characterized by

   a guide system (80) for guiding the coupling element (46) during a movement in the elevator shaft (12),

   - the guide system (80) having a guide (83) which is stationary relative to the elevator shaft (12) and a runner (82) which is connected to the coupling element (46) via a connection (81) and guided along the guide (83), and

   - the connection (81) between the coupling element (46) and the runner (82) being designed such that a relative movement between the runner (82) and the coupling element (46) is possible.
2. Elevator system according to claim 1,
   characterized in that
   the guide (83) extends along a shaft wall (84) of the elevator shaft (12), and the connection (81) between the coupling element (46) and the runner (82) is designed such that a first relative movement between the runner (82) and the coupling element (46) is possible, which relative movement has at least one component in the direction of said shaft wall (84) and away from the shaft wall (84).
3. Elevator system according to claim 2,
   characterized in that
   the connection (81) between the coupling element (46) and the runner (82) has a pin (97) which is coupled to the runner (82) and is arranged in a recess (98) in the coupling element (46) so as to be movable in the direction of said shaft wall (84) and away from the shaft wall (84).
4. Elevator system according to either claim 2 or claim 3,
   characterized in that
   the connection (81) has a first spring arrangement (103) which is designed and arranged such that it can apply a force to the runner (82) in the direction of the first relative movement.
5. Elevator system according to any of claims 1 to 4,
   characterized in that
   the guide (83) extends along a shaft wall (84) of the elevator shaft, (12) and the connection (81) between the coupling element (46) and the runner (82) is designed such that a second relative movement between the runner (82) and the coupling element (46) along said shaft wall (84) is possible, which relative movement has at least one horizontal component.
6. Elevator system according to claims 2 and 5,
   characterized in that
   the guide (83) guides the runner (82) in the direction of the first relative movement and in the direction of the second relative movement between the runner (82) and the coupling element (46).
7. Elevator system according to claim 3 and claim 5 or claim 6,
   characterized in that
   said recess (98) is arranged on a pivot arm (99) of the coupling element (46) which can be pivoted along said shaft wall (84).
8. Elevator system according to claim 7,
   characterized in that
   the connection (81) has a second spring arrangement (106) which is designed and arranged such that it can apply a force to the runner (82) in the direction of the second relative movement.
9. Elevator system according to any of claims 1 to 8,
   characterized in that
   the guide (83) has a side cheek (91) and the runner (82) has a guide roller (85, 86), the guide roller (85, 86) being guided on an inner face (92) of the side cheek (91) of the guide (83).
10. Elevator system according to claim 9,
    characterized in that
    the guide (83) has a first side cheek (91) and an opposite second side cheek (91) and the runner (82) has a first guide roller (85) and a second guide roller (86), the first guide roller (85) being guided on the inner face (92) of the first side cheek (91) of the guide (83) and the second guide roller (86) being guided on the inner face (92) of the second side cheek (91) of the guide (83).
11. Elevator system according to claim 10,
    characterized in that
    the first guide roller (85) is mounted on a first roller axle (89) and the second guide roller (86) is mounted on a second roller axle (90) and the two roller axles (89, 90) are arranged on a lever (87) of the runner (82) that is pivotable about a lever axle (88).
12. Elevator system according to claims 3 and 11,
    characterized in that
    the lever axle (88) of the pivotable lever (87) of the runner (82) is at least partially formed by the pin (97) of the connection (81) between the coupling element (46) and the runner (82).
13. Elevator system according to either claim 11 or claim 12,
    characterized in that
    the runner (82) has a third spring arrangement (95) which is designed and arranged such that the guide rollers (85, 86) are pressed against the inner faces (92) of the side cheeks (91) of the guide (83).
14. Elevator system according to any of claims 9 to 13,
    characterized in that
    the inner faces (92) of the side cheeks (91) of the guide (83) have a concave contour and the guide rollers (85, 86) of the runner (82) have a corresponding convex profile.

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