Counterweight assembly for an elevator system, and elevator system

Abstract

The invention relates to a counterweight assembly (26) for an elevator system. The elevator system (20) comprises: an elevator shaft (22); an elevator car (24) which is movably arranged in the elevator shaft (22); and a suspension means (40, 42) which is mechanically coupled to the elevator car (24) and is designed to hold the elevator car (24) in the elevator shaft (22). The counterweight assembly (26) comprises: at least one counterweight (50); a holding frame (52) in which the counterweight (50) is arranged; a suspension means end connection (54) to which the suspension means (40, 42) is attached and which is mechanically coupled to the counterweight (50); and an anti-rotation mechanism (60) which is attached to the holding frame (52), is arranged on the suspension means end connection (54) and is designed to prevent the suspension means end connection (54) from rotating.

Description

[0001] Counterweight arrangement for an elevator system and elevator system

[0002] Description

[0003] The invention relates to a counterweight arrangement for an elevator system and an elevator system.

[0004] In an elevator system, at least one elevator car can typically be moved within an elevator shaft between height levels of different floors of a building in which the elevator shaft is located. In a frequently used elevator type, the elevator car is held by one or more rope- or belt-like suspension elements. The suspension element can be coupled to the elevator car on the one hand and to one or more counterweights of the elevator system on the other. By moving the suspension element, the elevator car can be moved within the elevator shaft, for example in a vertical direction, with the counterweight moving in the opposite direction to the elevator car. For this purpose, the suspension element can run over a corresponding traction sheave that is mechanically coupled to a drive machine of the elevator system.The drive machine is designed to rotate the traction sheave, thereby moving the support means and, as a result, displacing the elevator car and the counterweight in the elevator shaft by means of the support means.

[0005] It is known to connect the counterweight to the support means by means of a support means end connection that is fastened to the counterweight. The support means end connection is designed to hold the support means securely without damaging the support means. For example, the support means end connection can have a housing in which a clamping device is arranged, by means of which the support means can be clamped firmly in the housing. During normal operation of the elevator system or during emergency braking, the support means end connection can rotate about a vertical axis of rotation that runs through the housing. The housing, twisted in this way, can collide with the elevator car during the movement of the elevator car and the counter-movement of the counterweight.Such a collision can be perceived acoustically and / or haptically by a passenger in the elevator car, thereby impairing the passenger's ride comfort. Furthermore, such a collision can lead to damage to the suspension element's end connection, particularly the housing, and / or the elevator car. This can compromise the safety of the elevator system.

[0006] Furthermore, the twisting can cause the suspension element to slip relative to the suspension element end connection and / or the suspension element end connection to become twisted to such an extent that proper function of the suspension element end connection is no longer guaranteed. This can also compromise the safety of the elevator system.

[0007] The counterweight with the suspension element end connection can, for example, be referred to as a counterweight arrangement. If the elevator system has two or more counterweights, the elevator system can accordingly have two or more counterweight arrangements.

[0008] There may be a need for a counterweight arrangement for an elevator system, wherein the counterweight arrangement contributes to a high level of travel comfort for a passenger of the elevator system and to the safety of the elevator system.

[0009] Such a need can be met by the subject matter according to one of the independent claims. Advantageous embodiments are defined in the dependent claims and the following description.

[0010] One aspect of the invention relates to a counterweight arrangement for an elevator system. The elevator system has an elevator shaft, an elevator car that is displaceably arranged in the elevator shaft, and a support means that is mechanically coupled to the elevator car and that is designed to hold the elevator car in the elevator shaft. The counterweight arrangement comprises: at least one counterweight; a holding frame in which the counterweight is arranged; a support means end connection, in particular a cable end connection, to which the support means is fastened and which is mechanically coupled to the counterweight; and an anti-rotation device that is fastened to the holding frame, is arranged at the support means end connection, and is designed to prevent rotation of the support means end connection.The anti-twist device prevents the suspension element end connection from twisting, particularly during normal operation of the elevator system and / or during emergency braking. The anti-twist device thus helps prevent the suspension element end connection from colliding with the elevator car. This contributes to a high level of ride comfort for passengers in the elevator car and to a high level of safety for the elevator system. Furthermore, preventing rotation by means of the anti-twist device helps prevent the suspension element from slipping relative to the suspension element end connection and ensures the proper functioning of the suspension element end connection. This also contributes to a high level of safety for the elevator system.

[0011] The support frame can be designed to guide the counterweight during its movement relative to the support frame. If the support means extends in the vertical direction, the direction of pull is also parallel to the vertical. Thus, the counterweight can move in the support frame relative to the support frame in the vertical direction. The counterweight arrangement and in particular the support frame with the counterweight can move in the opposite direction to the elevator car when the elevator car is displaced in the elevator shaft. During this movement, for example in the vertical direction, the counterweight arrangement can be guided by means of the support frame on a guide rail. The guide rail can be arranged in the elevator shaft and extend in the elevator shaft, for example in the vertical direction.The guide rail can be the same guide rail that guides the elevator car in the elevator shaft, or a separate guide rail can be arranged in the elevator shaft to guide the counterweight assembly, in particular the support frame. Thus, the support frame serves to hold and guide the counterweight and, optionally, to guide the counterweight assembly along the guide rail.

[0012] The suspension element can, for example, comprise one or more belts, straps, or bands, or one or more cables, for example, steel cables. The suspension element end connection is designed to securely hold the suspension element without damaging the suspension element. For example, the suspension element can be clamped over a wide area in a housing of the suspension element end connection by means of a clamping device, so that a force acting on the suspension element is distributed as effectively as possible across the suspension element and the clamping device. The suspension element end connection can be mechanically coupled to the counterweight by means of a rod extending through the support frame.When the counterweight arrangement is arranged as intended in the elevator shaft, the support member end connection can be arranged above the support frame and the rod can extend either outside the frame or through a recess in the support frame through the support frame to the counterweight arranged in the support frame.

[0013] The support frame can be designed, and the counterweight can be arranged in the support frame, such that it is movable relative to the support frame in and against the direction of tension of the support means. In this case, a spring element, for example a coil spring, can be arranged vertically between an upper section of the support frame and the counterweight, which is tensioned or released during the relative movement of the counterweight to the support frame, depending on the direction of the movement.

[0014] According to a further development, the anti-rotation device is fastened to the support frame in a rotationally fixed manner and is designed such that, when the counterweight arrangement is arranged as intended in the elevator shaft, it prevents rotation of the support member end connection about a vertical axis of rotation and permits vertical movement of the support member end connection relative to the anti-rotation device. Fastening the anti-rotation device to the support frame can easily contribute to ensuring that the support member end connection cannot be rotated due to the effect of the anti-rotation device, in particular not about the vertical axis of rotation. The anti-rotation device can, for example, have a retaining foot that is fastened to the support frame in a rotationally fixed manner. The retaining foot can, for example, be arranged such that it touches the support frame.The support leg can be attached to the support frame, for example, by means of a fastening element, such as one or more screws or rivets. Alternatively, the support leg can be welded to the support frame. When the counterweight assembly is properly positioned in the elevator shaft, the rotation axis extends vertically. The rotation axis can, for example, run centrally through the housing of the support member's end connection. The rotation axis can be the same rotation axis around which the support member rotates when it rotates.

[0015] According to a further development, the support member end connection comprises the housing, the anti-rotation device comprises a securing element, and the securing element is configured relative to the housing in such a way that an at least partially positive coupling is provided between the securing element and the housing, which prevents rotation of the housing and thus of the support member end connection and which permits vertical movement of the support member end connection relative to the anti-rotation device. The positive coupling of the securing element to the housing can easily contribute to preventing rotation of the support member end connection by means of the anti-rotation device. For example, the securing element can be configured in such a way that at least a part of the housing can be at least partially received in the securing element, wherein a shape of an inner side of the securing element corresponds to a shape of an outer side of the housing, as explained in more detail below.Alternatively, the securing element can be designed such that at least a part of the securing element can be at least partially accommodated in the housing, wherein a shape of an inner side of the housing in the corresponding region can correspond to a shape of an outer side of the securing element.

[0016] According to a further development, the securing element is adapted to the external shape of the housing in such a way that the positive coupling in the horizontal direction is ensured and the movement of the support member end connection relative to the anti-rotation device in the vertical direction is permitted. The positive coupling of the securing element to the housing can easily contribute to preventing the anti-rotation device from twisting the support member end connection.

[0017] According to a further development, the shape of the housing has at least one vertically extending edge. The securing element is designed in a clamp-like manner and has at least two clamp arms arranged relative to the edge such that, when a rotational force acts on the support member end connection about the rotation axis, the edge presses against one of the clamp arms, thereby preventing rotation of the support member end connection. Optionally, the housing can have two or more vertically extending edges, in particular outer edges. The securing element can accordingly have one, two, or more inner edges, wherein inner angles on the inner edges of the securing element can correspond to outer angles on the outer edges of the housing.

[0018] According to a further development, the housing has, at least in one section of the housing, a rectangular cross-section which is horizontally aligned when the counterweight arrangement is arranged as intended in the elevator shaft, the clamp arms are connected to one another by means of a clamp connection and are designed in such a way that they form an angular C-shape with the clamp connection, the securing element is designed and arranged in such a way relative to the housing that the clamp arms touch two different sides of the housing in the section of the housing, whereby the rotation of the support means end connection is prevented, and that the clamp arms are designed with a clearance fit to the corresponding sides of the housing, whereby the vertical movement of the support means end connection relative to the anti-rotation device is released.

[0019] The clamp connection can be connected to the retaining foot of the anti-rotation device or be formed integrally with the retaining foot. The fact that the clamp arms are designed with a clearance fit to the sides of the housing can, for example, mean that at least parts of the clamp arms touch the housing, but only so lightly that the housing can be moved relatively easily vertically relative to the clamp arms, and that when the support element end connection is rotated, there is as little play as possible in the direction of rotation toward the clamp arms.

[0020] One aspect of the invention relates to the elevator system. The elevator system comprises: the elevator shaft; the elevator car, which is arranged displaceably in the elevator shaft; the support means, which is mechanically coupled to the elevator car and which is designed to hold the elevator car in the elevator shaft; and the counterweight arrangement, as explained in more detail above and below. The support means can be fastened and / or fixed to and / or in the counterweight arrangement at an end of the support means facing away from the elevator car. If the elevator shaft extends in a vertical direction, the elevator car can be displaced vertically in the elevator shaft. For example, the elevator car can be displaced from one floor of a building in which the elevator shaft is located to another floor of the building.For this purpose, the support means can be coupled to a traction sheave of a drive machine of the elevator system, which is designed to rotate the traction sheave and thereby displace the elevator car in the elevator shaft by means of the support means. Due to the mechanical coupling of the elevator car to the counterweight arrangement by means of the support means, when the elevator car is displaced, the counterweight arrangement is displaced in a direction opposite to the direction in which the elevator car is displaced.

[0021] One or more guide rails for guiding the elevator car in its vertical direction can be arranged in the elevator shaft. The counterweight assembly, in particular the support frame of the counterweight assembly, can be mechanically coupled to one or more of these guide rails or to one or more separate guide rails, which can also be arranged in the elevator shaft, so that the counterweight assembly is guided by the corresponding guide rail during its movement through the elevator shaft. Optionally, the elevator system can have a further drive machine, a corresponding further traction sheave, a corresponding further suspension means, and a corresponding further counterweight assembly.Optionally, one counterweight arrangement may be arranged in the elevator shaft on a lateral first side of the elevator car and the further counterweight arrangement may be arranged on a lateral second side of the elevator car facing away from the first side of the elevator car.

[0022] It should be noted that some of the possible features and advantages of the invention are described herein with reference to only one of the aspects. However, one skilled in the art will recognize that these features can be readily applied to one or more of the other aspects to achieve further embodiments of the invention and / or to achieve further advantages. Embodiments of the invention are described below with reference to the accompanying drawings, wherein neither the drawings nor the description should be construed as limiting the invention.

[0023] Fig. 1 shows a side sectional view of an elevator system according to an exemplary embodiment of the present invention.

[0024] Fig. 2 shows a perspective detailed view of a counterweight arrangement of the elevator system according to an exemplary embodiment of the present invention.

[0025] Fig. 3 shows a further perspective detailed view of the counterweight arrangement according to Figure 2.

[0026] The figures are merely schematic and not to scale. The same reference numerals designate identical or equivalent features in the various figures.

[0027] Fig. 1 shows a side sectional view of an elevator system 20 according to an exemplary embodiment of the present invention. The elevator system 20 can be used, for example, to transport people and / or goods within a building from one floor of the building to another floor of the building.

[0028] The elevator system 20 has an elevator car 24, a first drive machine 30, at least one counterweight arrangement 26, a first traction sheave 34, a first support means 40, and an elevator control system 44. The first traction sheave 34 is mechanically coupled to the first drive machine 30 and can be rotated by the first drive machine 30. Optionally, the elevator system 20 can have a second drive machine 32, another counterweight arrangement 26, a second traction sheave 36, and a second support means 42. The second traction sheave 36 is mechanically coupled to the second drive machine 32 and can be rotated by the second drive machine 32. The elevator system 20 can have an elevator shaft 22 in which the elevator car 24 and the counterweight arrangements 26 are displaceably arranged. If the elevator shaft 22 extends in the vertical direction, the elevator car 24 and the counterweight arrangements 26 are displaceable in the vertical direction.For example, the elevator car 24 can be moved from one floor of a building (not shown) in which the elevator shaft 22 is located to another floor of the building.

[0029] The first support means 40 is attached on the one hand to the elevator car 24 and on the other hand to one of the counterweight assemblies 26. The first support means 40 runs from the elevator car 24 via the first traction sheave 34 to the corresponding counterweight assembly 26. The corresponding counterweight assembly 26 and the elevator car 24 are at least partially suspended from the first traction sheave 34. The second support means 42 is arranged on the one hand on the elevator car 24 and on the other hand on the further counterweight assembly 26. The second support means 42 runs from the elevator car 24 via the second traction sheave 36 to the corresponding counterweight assembly 26, so that the corresponding counterweight assembly 26 and the elevator car 24 are at least partially suspended from the second traction sheave 36. The support means 40, 42 can each comprise, for example, one or more belts or bands, or one or more cables, for example steel cables.

[0030] The first support means 40 can be arranged on a first side of the elevator car 24. The second support means 42 can be arranged on a second side of the elevator car 24, which is opposite the first side of the elevator car 24. In the case of two counterweight assemblies 26, one of the counterweight assemblies 26 can hang in the elevator shaft 24 adjacent to the first side of the elevator car 24, and the other of the counterweight assemblies 26 can hang in the elevator shaft 22 adjacent to the second side of the elevator car 24.

[0031] The second drive machine 32, the second support means 42, and the second traction sheave 36 can, in terms of their design, arrangement, and / or mode of operation, basically correspond to the first drive machine 30, the first support means 40, and the first traction sheave 34, respectively. The two support means 40, 42 are designed to jointly support the elevator car 24, and the two drive machines 30, 32 are designed to jointly displace the elevator car 24 by means of the corresponding traction sheaves 30, 32 and support means 40, 42. Due to the mechanical coupling of the elevator car 24 to the counterweight assemblies 26 by means of the support means 40, 42, when the elevator car 24 is displaced, the counterweight assemblies 26 are displaced in a direction opposite to the direction in which the elevator car 24 is displaced.

[0032] The elevator control system 44 can be configured to control the first and / or second drive machines 30, 32, for example, to move the first and / or second support means 40, 42 by means of the first and / or second drive machines 30, 32, respectively, and thus to displace the elevator car 24 in the elevator shaft 22. In particular, the drive machines 30, 32 can each be configured to rotate the corresponding traction sheave 34, 36 and thereby displace the elevator car 24 in the elevator shaft 22 by means of the support means 40, 42. The elevator control system 44 can be communicatively coupled to the first and / or second drive machines 30, 32.

[0033] The counterweight assemblies 26 each comprise at least one counterweight 50, a support frame 52, a support element end connection 54, and an anti-rotation device 60. The counterweight assemblies 26 can, in principle, be constructed identically, with one of the counterweight assemblies 26 being coupled to the first support element 40 and the other of the counterweight assemblies 26 being coupled to the second support element 42. Therefore, only the configurations of one of the two counterweight assemblies 26 will be discussed below. However, the corresponding explanations can easily be applied to the other of the two counterweight assemblies 26.

[0034] The counterweight 50 is arranged in the holding frame 52. The holding frame 52 can be designed and the counterweight 50 can be arranged in the holding frame 52 such that it is movable parallel to a pulling direction of the support means 40, 42 relative to the holding frame 52. If the support means 40, 42 extends in the vertical direction, the pulling direction is also parallel to the vertical. The holding frame 52 can be designed to guide the counterweight 50 during its movement relative to the holding frame 50. In this case, a spring element 58, for example a spiral spring, can be arranged vertically between an upper section of the holding frame 52 and the counterweight 50, which is tensioned or relieved during the relative movement of the counterweight 50 to the holding frame 52 depending on the direction of the movement.

[0035] The corresponding support element 40, 42 is attached to the support element end connection 54. The support element end connection 54 is mechanically coupled to the counterweight 50. The support element end connection 54 is designed to securely hold the corresponding support element 40, 42 without damaging the corresponding support element 40, 42.

[0036] For example, the support means 40, 42 can be clamped over a wide area in a housing 68 of the support means end connection 54 by means of a clamping device (not shown) so that a force acting on the support means 40, 42 is distributed as well as possible over the support means 40, 42 and the clamping device.

[0037] The anti-rotation device 60 is fastened to the holding frame 52 and arranged on the support element end connection 54. The anti-rotation device 60 is designed to prevent rotation of the support element end connection 54. The anti-rotation device 60 prevents the support element end connection 54 from rotating, in particular during normal operation of the elevator system 20 and / or during emergency braking. The anti-rotation device 60 is fastened to the holding frame 52 in a rotationally secure manner. The anti-rotation device 60 is designed such that, when the counterweight arrangement 26 is arranged as intended in the elevator shaft 22, it prevents rotation of the support element end connection 54 about a vertical axis of rotation and simultaneously permits vertical movement of the support element end connection 54 relative to the anti-rotation device 60.When the counterweight assembly 26 is properly arranged in the elevator shaft 22, as shown in Figure 1, the vertical axis of rotation extends vertically. For example, the axis of rotation can extend centrally through the housing 68 of the suspension element end connection 54. The axis of rotation can be the same axis of rotation about which the suspension element 40, 42 rotates during rotation.

[0038] The anti-rotation device 60 can, for example, have a securing element 61 to prevent rotation of the support element end connection 54 about the rotation axis. The securing element 61 can be configured with respect to the housing 68 in such a way that an at least partially positive coupling is provided between the securing element 61 and the housing 68. The positive coupling prevents rotation of the housing 68 and thus of the support element end connection 54 and simultaneously permits vertical movement of the support element end connection 54 relative to the anti-rotation device 60. For example, the securing element 61 can be adapted to the external shape of the housing 68 in such a way that the positive coupling is provided in the horizontal direction and the movement of the support element end connection 54 relative to the anti-rotation device 60 in the vertical direction is permitted.

[0039] In particular, the securing element 61 can be designed such that at least a part of the housing 68 can be at least partially received in the securing element 61, wherein a shape of an inner side of the securing element 61 can correspond to a shape of an outer side of the housing 68, as explained in more detail below with reference to Figures 2 and 3.

[0040] Alternatively, the securing element 61 can be designed such that at least a part of the securing element 61 can be at least partially received in the housing 68, wherein a shape of an inner side of the housing 68 in the corresponding region can correspond to a shape of an outer side of the securing element 61. For example, the housing 68 can have a vertically extending groove (not shown), and the securing element 61 can have a type of spring or pin (not shown) guided in the groove, such that the spring or pin in the groove prevents the rotation of the support element end connection 54 about the axis of rotation and, at the same time, slides in the groove during the relative movement of the support element end connection 54 to the anti-rotation device 60, thus not hindering this relative movement, i.e., allowing it to move.

[0041] Fig. 2 shows a perspective detailed view of a counterweight arrangement 26 of an elevator installation 22, according to an exemplary embodiment of the present invention, for example one of the counterweight arrangements 26 explained with reference to Fig. 1.

[0042] Fig. 3 shows a further perspective detailed view of the counterweight arrangement 26 according to Figure 2. One or more guide rails 70 for guiding the elevator car 24 in its vertical direction can be arranged in the elevator shaft 22. The counterweight arrangement 26 and in particular the holding frame 52 with the counterweight 50 can move in the opposite direction to the elevator car 24 when the elevator car 24 is displaced in the elevator shaft 22. The counterweight arrangement 26, in particular the holding frame 52 of the counterweight arrangement 26, can be mechanically coupled to one or more of the guide rails 70 on which the elevator car 24 is guided, or to one or more separate guide rails 70, which can also be arranged in the elevator shaft 22, so that the counterweight arrangement 26 is guided by the corresponding guide rail 70 by means of the holding frame 52 during its movement through the elevator shaft 22.

[0043] When the counterweight assembly 26 is arranged as intended in the elevator shaft 22, the support element end connection 54 can be arranged above the support frame 52. The support element end connection 54 can be mechanically coupled to the counterweight 50 by means of a rod 56 that extends through the support frame 52. The rod 56 can extend either outside the support frame 52 or, as shown in Figures 2 and 3, through a recess in the support frame 52 through the support frame 52 to the counterweight 50, which is arranged in the support frame 52.

[0044] The anti-rotation device 60 can, for example, have a support foot 62 that is rotationally fixedly attached to the support frame 52. The support foot 62 can, for example, be arranged such that it touches the support frame 52. The support foot 62 can, for example, be attached to the support frame 52 by means of a fastening element, for example, by means of one or more screws or rivets. Alternatively, the support foot 62 can be welded to the support frame 52.

[0045] The outer shape of the housing 68 can have one or more vertically extending edges 74, in particular outer edges. The securing element 61 can be clamp-like and have two or more clamp arms 64. The clamp arms 64 can be arranged relative to the edges 74 such that, when a rotational force acts on the support element end connection 54 about the rotation axis, the edges 75 press against at least one of the clamp arms 64, thereby preventing rotation of the support element end connection 54. The securing element 61 can accordingly have one, two, or more inner edges, wherein inner angles on the inner edges of the securing element 61 can correspond to outer angles on the outer edges of the housing 68.

[0046] The clamp arms 64 can be connected to one another by means of a clamp connection 66 and can be configured such that they form a square C-shape with the clamp connection 66. The housing 68 of the support element end connection 54 can be arranged in the C-shape. The clamp connection 66 can be connected to the retaining foot 62 of the anti-rotation device 60 or can be formed integrally with the retaining foot 62.

[0047] The housing 68 can have a rectangular cross-section, at least in a vertical section of the housing 68, which is horizontally oriented when the counterweight assembly 26 is properly arranged in the elevator shaft 22. The securing element 61 can then be designed and arranged relative to the housing 68 such that the clamp arms 64 touch two different sides of the housing 68 in the section, thereby preventing rotation of the support element end connection 54.

[0048] In addition, the clamp arms 64 can be designed with a clearance fit to the corresponding sides of the housing 68, thereby enabling vertical movement of the support element end connection 54 relative to the anti-rotation device 60. The fact that the clamp arms 64 are designed with a clearance fit to the sides of the housing 68 can mean, for example, that at least parts of the clamp arms 64 touch the housing 68, but only so lightly that the housing 68 can be moved relatively easily in the vertical direction relative to the clamp arms 64, and that when the support element end connection 54 is rotated, there is as little play as possible in the direction of rotation toward the clamp arms 64.

[0049] Finally, it should be noted that terms such as "having," "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 noted that features or steps described with reference to one of the above embodiments may also be used in combination with other features or steps of other embodiments described above. Reference signs in the claims are not to be considered as limitations.

Claims

Patent claims 1. A counterweight arrangement (26) for an elevator system, the elevator system (20) comprising an elevator shaft (22), an elevator car (24) which is displaceably arranged in the elevator shaft (22), and a support means (40, 42) which is mechanically coupled to the elevator car (24) and which is designed to hold the elevator car (24) in the elevator shaft (22), the counterweight arrangement (26) comprising: at least one counterweight (50); a holding frame (52) in which the counterweight (50) is arranged; a support means end connection (54), in particular a cable end connection, to which the support means (40, 42) is fastened and which is mechanically coupled to the counterweight (50); and an anti-rotation device (60) which is fastened to the holding frame (52), which is arranged on the support means end connection (54) and which is designed to prevent rotation of the support means end connection (54).

2. Counterweight arrangement (26) according to claim 1, wherein the anti-rotation device (60) is fastened to the holding frame (52) in a rotationally secure manner and is designed such that, when the counterweight arrangement (26) is arranged as intended in the elevator shaft (22), it prevents rotation of the support means end connection (54) about a vertical axis of rotation and allows vertical movement of the support means end connection (54) relative to the anti-rotation device (60).

3. Counterweight arrangement (26) according to one of the preceding claims, wherein the support means end connection (54) has a housing (68), the anti-rotation device (60) has a securing element (61), and the securing element (61) is designed with respect to the housing (68) in such a way that an at least partially positive coupling is provided between the securing element (61) and the housing (68), which prevents the rotation of the housing (68) and thus of the support means end connection (54) and which permits the vertical movement of the support means end connection (54) relative to the anti-rotation device (60).

4. Counterweight arrangement (26) according to claim 3, wherein the securing element (61) is adapted to an external shape of the housing (68) in such a way that the positive coupling is provided in the horizontal direction and the movement of the support means end connection (54) relative to the anti-rotation device (60) is released in the vertical direction.

5. Counterweight arrangement (26) according to claim 4, wherein the outer shape of the housing (68) has at least one vertically extending edge (74), the securing element (61) is designed in the manner of a clamp and has at least two clamp arms (64) which are arranged relative to the edge (74) such that the edge (74) presses against one of the clamp arms (64) when a rotational force acts on the support means end connection (54) about the axis of rotation, thereby preventing rotation of the support means end connection (54).

6. Counterweight arrangement (26) according to claim 5, wherein the housing (68) has, at least in a section of the housing (68), a rectangular cross-section which is horizontally oriented when the counterweight arrangement (26) is spatially arranged as intended in the elevator shaft (22), the clamp arms (64) are connected to one another by means of a clamp connection (66) and are designed such that they form a square C-shape with the clamp connection (66), the securing element (61) is designed and arranged relative to the housing (68) such that the clamp arms (64) contact two different sides of the housing (68) in the section of the housing (68), thereby preventing rotation of the support means end connection (54), and the clamp arms (64) are designed with a clearance fit to the corresponding sides of the housing (68), thereby enabling vertical movement of the support means end connection (54) relative to the anti-rotation device (60).

7. Elevator installation (20), comprising: an elevator shaft (22); an elevator car (24) which is arranged to be displaceable in the elevator shaft (22); a support means (40, 42) which is mechanically coupled to the elevator car (24) and which is designed to hold the elevator car (24) in the elevator shaft (22); and a counterweight arrangement (26) according to one of the preceding claims, to which an end of the support means (40, 42) facing away from the elevator car (24) is fastened and which is displaceable in the elevator shaft (22) in the opposite direction to the elevator car (24).

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