Device for fixing a carrying strap and lift system that grows therewith

Abstract

The invention relates to a device (36) for fixing a carrier tape (20) in a predetermined pulling direction (40). The carrier belt (20) is designed to support a lifting car (14) of the lifting system (10). The device (36) comprises two holding jaws (50) for clamping the carrier tape (20) and a holding jaw receptacle (52), the carrier tape (20) being clamped between the holding jaws (50) when the carrier tape (20) is arranged in a desired manner, and wherein at least one of the holding jaws (50) gradually tapers in the pulling direction (40), the holding jaw receptacle is arranged in front of the holding jaw (50) in the pulling direction (40) and has a receiving recess (62) for receiving the holding jaw (50), which receiving recess opens towards the holding jaw (50) and tapers gradually in the pulling direction (40), the holding jaws (50) are arranged in the receiving recesses (62) in such a way that when the carrier tape (20) is arranged as intended between the holding jaws (50) and when a sufficient tension is present on the carrier tape (20) in the pulling direction (40), the holding jaws (50) can be pulled at least sufficiently far into the receiving recesses (62) by means of the carrier tape (20), such that the holding jaws (50) are arranged at least partially in the receiving recesses (62), the holding jaws (50) are provided with holding jaw receptacles (52), and the holding jaws (50) are pressed together due to the tapering of the receiving recesses (62) and due to the tapering of the corresponding holding jaws (54, 56), such that the carrier tape (20) is fixed in the holding jaw receptacles (52) by means of the holding jaws (50) with a sufficient tensile length on the carrier tape (20) in the pulling direction (40).

Description

(19) State Intellectual Property Office (12) Invention Patent Application (10) Application Publication Number (43) Application Publication Date (21) Application Number 202480078025.5 (22) Application Date 2024.12.09 (30) Priority Data 23215408.8 2023.12.11 EP (85) PCT International Application Entering National Phase Date 2026.06.09 (86) PCT International Application Application Data PCT / EP2024 / 085311 2024.12.09 (87) PCT International Application Publication Data WO2025 / 125171 DE 2025.06.19 (71) Applicant: Integr AG, Address: Switzerland (72) Inventor: Lucas Christian (74) Patent Agency: China Patent & Trademark Agency Co., Ltd. 11021 Patent Attorney Wang Ziwen (51) Int.Cl. B66B 5 / 18 (2006.01) B66B 7 / 08 (2006.01) B66B 9 / 187 (2006.01) (54) Title of Invention Device for Fixing a Carrier Belt and a Lifting System that Grows Therewith (57) Abstract This invention relates to a device (36) for fixing a carrier belt (20) in a predetermined pulling direction (40). The carrier belt (20) is designed to support the lifting car (14) of the lifting system (10). The device (36) includes two retaining jaws (50) for clamping a carrier belt (20) and a retaining jaw receiving portion (52), wherein when the carrier belt (20) is arranged as intended, the carrier belt (20) is clamped between the retaining jaws (50), and wherein at least one of the retaining jaws (50) tapers progressively in the pulling direction (40), the retaining jaw receiving portion is arranged in front of the retaining jaws (50) in the pulling direction (40) and has a receiving recess (62) for receiving the retaining jaws (50), the receiving recess opening toward the retaining jaws (50) and taper progressively in the pulling direction (40), such that when the carrier belt (20)... As intended, the retaining claws (50) are arranged between the retaining claws (50), and when there is sufficient tension on the carrier belt (20) along the pulling direction (40), the retaining claws (50) can be pulled into the receiving recess (62) at least far enough by means of the carrier belt (20), such that the retaining claws (50) are at least partially arranged in the receiving recess (62), and due to the tapering of the receiving recess (62) and due to the tapering of the corresponding retaining claws (54, 56), the retaining claws (50) are squeezed together, such that when there is sufficient stretching length of tension on the carrier belt (20) along the pulling direction (40), the carrier belt (20) is fixed in the retaining claw receiving portion (52) by means of the retaining claws (50).Claims 2 pages, Description 12 pages, Drawings 5 ​​pages, CN 122422241 A 2026.07.17 CN 1 22 42 22 41 A 1. A device (36) for fixing a suspension belt (20) in a predetermined traction direction (40), wherein the suspension belt (20) is designed to suspend an elevator car (14) of an elevator system (10) that grows therefrom, the device (36) having: Two retaining jaws (50) for clamping the suspension strap (20), wherein the suspension strap (20) is clamped between the retaining jaws (50) when the suspension strap (20) is positioned as intended, and wherein at least one of the retaining jaws (50) tapers progressively in the pulling direction (40); and a retaining jaw receiving portion (52) disposed in front of the retaining jaws (50) in the pulling direction (40) and having a receiving recess (62) for receiving the retaining jaws (50), the receiving recess (62) opening toward the retaining jaws (50) and taper progressively in the pulling direction (40) such that when the suspension strap (20) is positioned as intended by the retaining jaws (50)... When there is sufficient tension on the suspension belt (20) along the pulling direction (40), the retaining claw (50) can be pulled into the receiving recess (62) by means of the suspension belt (20) at least far enough, such that the retaining claw (50) is at least partially arranged in the receiving recess (62), and such that the retaining claw (50) is squeezed together by means of the tapering of the receiving recess (62) and by means of the tapering of the corresponding retaining claws (50, 54, 56), so that the suspension belt (20) is fixed in the retaining claw receiving portion (52) by means of the retaining claw (50) when the tension on the suspension belt (20) along the pulling direction (40) has sufficient elongation. 2. The device (36) according to claim 1, wherein the retaining jaws (54, 56) that taper progressively in the pulling direction (40) are wedge-shaped at least in the forward portion of the respective retaining jaws (54, 56) in the pulling direction (40), thereby forming a taper of the respective retaining jaws (54, 56). 3. The device (36) according to claim 1 or 2, wherein the two retaining jaws (50) taper progressively in the pulling direction (40). 4. The device (36) according to any of the preceding claims, wherein the retaining jaws (50) are arranged in a mirror-symmetric manner with each other.5. The device (36) according to any one of the preceding claims, wherein, on the rearward side of the receiving recess (62) in the pulling direction (40), the receiving recess (62) has a cross section perpendicular to the pulling direction (40), the cross section being larger than the common cross section of the two retaining claws (50) in the front in the pulling direction (40). 6. The device (36) according to any one of the preceding claims, wherein, when sufficient tension is applied to the suspension belt (20), the retaining claws (54, 56) that gradually taper in the pulling direction (40) abut against the wall of the receiving recess (62), and the wall is a sliding surface (68, 70) of a ramp (58, 60) formed by the retaining claw receiving portion (52), wherein when the suspension belt (20) is pulled, the corresponding retaining claws (54, 56) slide into the receiving recess (62) along the sliding surface (68, 70). 7. The device (36) according to any one of the preceding claims, wherein the receiving recess (62) of the retaining claw receiving portion (52) tapers in the pulling direction (40) such that the retaining claw receiving portion (52) forms an end stop for the retaining claw (50) in the pulling direction (40), the end stop preventing further movement of the retaining claw (50) in the pulling direction (40), and thus preventing further movement of the clamped suspension belt (20) in the pulling direction (40). 8. The device (36) according to any one of the preceding claims, wherein, each of the retaining claws (50) has at least one anti-slip surface (66) on its mutually facing sides, wherein when the suspension belt (20) is arranged as intended, the at least one anti-slip surface (66) contacts the suspension belt (20) to increase the friction between the respective retaining claws (54, 56) and the suspension belt (20). 9. The device (36) according to any one of the preceding claims, having a bracket (72) for fixing the device (36) immovably in the elevator shaft (12) of the elevator system (10), wherein the retaining claw receiving portion (52) is mechanically coupled to the bracket (72), and the retaining claw receiving portion (52) is immovably arranged in the elevator shaft (12) by means of the bracket (72).10. The device (36) according to any one of the preceding claims has a tensioning counterweight (74) arranged relative to the path of the suspension belt (20) on the side of the retaining gripper (50) away from the elevator car (14), and the tensioning counterweight (74) is suspended on the retaining gripper (50) such that, due to the tensioning counterweight (74), the suspension belt (20) is pre-tensioned by means of the retaining gripper (50) in the opposite direction to the pulling direction (40). 11. The device (36) according to any one of the preceding claims has a sliding sensor (78) designed and arranged such that it is possible to detect by means of the sliding sensor (78) whether the suspension belt (20) is sliding relative to the retaining gripper (50). 12. An ascending elevator system (10) for transporting a load from one floor to another within a building under construction, the elevator system (10) comprising: an elevator car (14) for receiving the load; an elevator shaft (12) the height of which increases with the height of the building during the construction phase of the building, the elevator shaft (12) extending at least from one floor to the next, and the elevator car (14) being arranged in the elevator shaft (12) in a displaceable manner; a suspension belt (20) mechanically coupled to the elevator car (14); and a drive motor (18) mechanically coupled to the suspension belt (20) and designed to displace the elevator car (14) within the elevator shaft (12) by means of the suspension belt (20); A device (36) for securing the suspension belt (20), wherein a portion of the suspension belt (20) is arranged in the device (36); and a suspension belt storage (38) arranged relative to the path of the suspension belt (20) on the side of the device (36) away from the elevator car (14), and the suspension belt storage (38) is designed to receive the portion of the suspension belt (20) located relative to the path of the suspension belt (20) on the side of the device (36) for securing the suspension belt (20) away from the elevator car (14).13. The elevator system (10) according to claim 12, having a friction brake (32), the suspension belt (20) extending through the friction brake (32), the friction brake (32) being arranged relative to the path of the suspension belt (20) between the elevator car (14) and the device (36), and the friction brake (32) being designed to variably fix the suspension belt (20), and thereby absorb most of the weight of the elevator car (14) transmitted by the suspension belt (20), such that only a small portion of the weight of the elevator car (14) transmitted by the suspension belt (20) must be held by the device (36). Claims 2 / 2 Page 3 CN 122422241 A Device for Fixing a Suspension Belt and Elevator System that Grows Therewith Technical Field

[0001] The present invention relates to a device for fixing a suspension belt and an elevator system that grows therewith. This invention relates particularly to a device for fixing a suspension belt in a traction direction, especially in a predetermined traction direction, and to an elevator system that grows therefrom and has this device. Background Art

[0002] Elevator systems are used to transport loads (e.g., people and / or goods) from one floor of a building to another floor of that building. For this purpose, elevator systems typically have an elevator shaft that extends within the building, connecting the various floors, for example, in a vertical direction. The respective shaft doors of the elevator system are regularly arranged on the elevator shaft at each floor, each providing an entrance to the elevator shaft. In the elevator shaft, one or more elevator cars can be arranged such that they can be moved within the elevator shaft, for example, in a vertical direction, from one floor to another. Furthermore, elevator systems typically have load-bearing elements, such as steel cables or suspension belts (in other words, load-bearing belts), which mechanically connect the respective elevator cars to the drive motor of the elevator system, enabling the elevator cars to move within the elevator shaft by means of the respective load-bearing elements and the drive motor.

[0003] If a building is still under construction, especially if not all floors of the building have been completed, it may be useful to install a construction site elevator system (e.g., an extendable elevator system) to transport workers and building materials to the higher floors that have been completed. For this purpose, outdoor elevators, particularly extendable outdoor elevators, can be used, for example, located on the exterior of the building. However, for safety reasons, such outdoor elevators are relatively slower than indoor elevators. Furthermore, outdoor elevators are exposed to the weather and can only be used with limited availability or not at all in very bad weather. Additionally, the operation of these outdoor elevators generates noise, so they can only be used with limited availability or not at all at night.Low speed and weather-dependent, nighttime-limited use can lead to construction delays, which typically result in increased costs.

[0004] A climbing lift (also known as a “jump lift”) provides a very good alternative that does not involve any of the problems of the aforementioned outdoor elevators. Using such a climbing lift, the machine platform of the elevator system (on which the elevator system’s drive unit is secured) can be suspended at different heights within the elevator shaft according to the current construction progress, and the elevator car can be used to serve different floors of the building, regardless of the height at which the machine platform is currently suspended. However, this may require the ability to vary the length of the moving portion of the corresponding load-bearing element.

[0005] The “moving” portion of the load-bearing element can be understood as the portion of the load-bearing element that bears the tensile forces of the elevator car during normal operation of the extending elevator system. In particular, the moving portion of the load-bearing element can begin from a first end of the load-bearing element (e.g., where it is secured to the machine platform), for example, through a counterweight and extending to the elevator car and a second end of the load-bearing element. Along the path of the load-bearing element, a device may be arranged between the elevator car and the second end of the load-bearing element, by means of which the movable portion of the load-bearing element may be extended or shortened as needed. This device may, for example, have a friction brake and / or a load-bearing element storage unit.

[0006] The “inactive” portion of the load-bearing element (which does not bear the tensile force of the elevator car during normal operation of the extension elevator system) is located behind the friction brake along the path of the load-bearing element, starting from the elevator car and then extending toward the load-bearing element storage unit, in which the second end of the load-bearing element may be arranged and / or secured. The length of the inactive portion of the load-bearing element varies depending on the height of the elevator and the floors currently being served by the elevator. The longer the active portion becomes, the shorter the inactive portion becomes, and vice versa.

[0007] Such friction brakes are known and are based on the fact that one or more components of the friction brake generate such strong friction between the component and the load-bearing element that a large portion of the weight of the elevator car transmitted through the load-bearing element is transferred to the friction brake via friction. The component may, for example, have one or more rollers and / or cylinders, some of which may be fixed and some of which may be rotatable. On the side of the friction brake's path away from the elevator car relative to the load-bearing element, the load-bearing element must be fixed to allow the friction brake to function and to prevent the load-bearing element from slipping through the friction brake. This serves as a safety measure in case of undesirable slippage in the friction brake.When a steel cable is used as a load-bearing element, it can be secured in this way by simply clamping it securely between two retaining elements. However, this can be problematic with suspension belts (also known as load-bearing belts or simply strips or belts), as the suspension belt can be damaged when clamped between conventional retaining elements. This can be particularly problematic if the suspension belt has a plastic overlay with a compressive strength lower than that of the suspension belt.

[0008] Furthermore, a potential problem with such climbing elevators is that there is naturally limited space available in the elevator shaft, making it difficult to arrange, for example, friction brakes and / or one or more sufficiently large load-bearing element reservoirs for receiving at least a portion of the inactive portion of the load-bearing belt on a machine platform or in the pit of the elevator shaft.

[0009] There may be a need for a device for securing a suspension belt in a predetermined traction direction, which is compact and / or protects the suspension belt and, in particular, does not damage it, even when tensile forces act on the suspension belt in the traction direction during the operation of an elevator system, wherein the elevator system has the suspension belt as a load-bearing element of the elevator car. Furthermore, there may be a need for an elevator system having this device.

[0010] This need can be addressed by the subject matter described in the independent claims. Advantageous embodiments are set forth in the dependent claims and the following description.

[0011] According to one aspect of the invention, a device for securing a suspension belt in a predetermined traction direction is described. The suspension belt is designed to suspend the elevator car of an elevator system (particularly a climbing elevator or a jump elevator) that grows with it. The device comprises: two retaining jaws for clamping the suspension belt, wherein when the suspension belt is positioned as intended, the suspension belt is clamped between the retaining jaws, and wherein at least one of the retaining jaws tapers progressively in the traction direction; and a retaining jaw receiving portion positioned in front of the retaining jaws in the traction direction, and having a receiving recess for receiving the retaining jaw, the recess opening toward the retaining jaws and taper progressively in the traction direction, such that when the suspension belt is positioned as intended between the retaining jaws and there is sufficient tension on the suspension belt in the traction direction, the retaining jaws can be pulled into the receiving recess by means of the suspension belt at least far enough, such that the retaining jaws are at least partially positioned in the receiving recess, and due to the taper of the receiving recess and due to the taper of the corresponding retaining jaws, the retaining jaws are pressed together, thereby securing the suspension belt in the retaining jaw receiving portion by means of the retaining jaws when there is sufficient elongation of tension on the suspension belt in the traction direction.

[0012] According to one aspect of the invention, an incremental elevator system, particularly a climbing elevator or a jump elevator, is described.The aforementioned incremental elevator system is used to transport loads (e.g., one or more people and / or goods) from one floor to another within a building under construction. The aforementioned expanding elevator system comprises: an elevator car for receiving a load; an elevator shaft that increases in height during the construction phase of the building as the building height increases, extending at least from one floor to the next, and the elevator car is arranged in the elevator shaft in a displaceable manner; a suspension belt mechanically coupled to the elevator car; a drive motor mechanically coupled to the suspension belt and designed to displace the elevator car within the elevator shaft by means of the suspension belt; a device for fixing the suspension belt, such as the device described above and below for fixing the suspension belt in a predetermined pulling direction, wherein a portion of the suspension belt is arranged in the device, for example, as intended between the retaining jaws of the device; and a suspension belt reservoir arranged relative to the path of the suspension belt on the side of the device away from the elevator car, and the suspension belt reservoir is designed to receive the portion of the suspension belt located relative to the path of the suspension belt on the side of the device for fixing the suspension belt away from the elevator car.

[0013] As an alternative to the above and below device for fixing the suspension belt in a predetermined traction direction, the device has retaining jaws. The elongating elevator system may have a device for fixing the suspension belt in a predetermined traction direction, the device having at least one wedge-shaped gap, such as the retaining jaw receiving portion, in which a roller is guided. In an operating state where undesirable slippage occurs, the roller moves upward relative to the gap by means of the sliding suspension belt, thereby clamping the suspension belt between the roller and the wall of the gap and thus fixing it. Therefore, one or two (retaining) rollers can be used instead of one or two wedge-shaped retaining jaws to fix the suspension belt in the device.

[0014] For example, a large portion of the inactive part of the suspension belt can be arranged in a suspension belt reservoir. This inactive part may have a second end of the suspension belt. The suspension belt reservoir may, for example, have a rotatable roller on which this portion of the suspension belt can be wound. The suspension belt storage device allows the inactive portion of the suspension belt that is not currently needed to be safely and gently stored by, for example, winding the suspension belt onto a roller. The roller may be electrically and / or mechanically rotatable. The suspension belt storage device also allows the active portion of the suspension belt to be extended if necessary, for example by unwinding the suspension belt from the roller.

[0015] When the suspension belt is arranged as intended, one of the retaining jaws (e.g., the first retaining jaw in the retaining jaws) is arranged on a first side of the suspension belt, and the other retaining jaw (e.g., the second retaining jaw in the retaining jaws) is arranged on a second side of the suspension belt.The two retaining jaws can be fastened to each other, for example, by being screwed or clamped together. When the device is used as intended, the suspension belt is arranged in the device as intended, and the elevator car causes the suspension belt to bear a portion of the weight of the elevator car in the traction direction, such that the elevator car pulls the suspension belt in the traction direction. For the path of the suspension belt between the device and the elevator car, the suspension belt may extend around one or more fixed rollers and / or rotating rollers that can at least partially absorb another portion of the weight of the elevator car, such that the suspension belt does not bear the full weight. For example, for the path of the suspension belt, a friction brake may be arranged between the device and the elevator car, which may have rollers capable of absorbing most of the force of the elevator car on the suspension belt, and this will be explained in more detail below.

[0016] In the initial state of the device, the suspension belt is not yet subjected to a tensile force in the traction direction. In the initial state, the suspension belt can be arranged as intended between the retaining jaws, and the retaining jaws can be fastened to each other such that the suspension belt is clamped between the retaining jaws with at least a slight contact pressure. This contact pressure should be at least large enough that when the suspension belt is pulled in the traction direction, particularly when it is pulled into the receiving recess, the retaining jaws also move.

[0017] In the operating state of the device (particularly when the suspension belt slides through the friction brake), the suspension belt is subjected to tensile force in the traction direction, particularly due to the weight of the elevator car. In the operating state of the device, when the two retaining jaws abut against the respective walls of the receiving recess due to the tension caused by the tensile force and this tension is maintained, the two retaining jaws are squeezed together due to the contraction of the receiving recess and the corresponding retaining jaws, because the space in the receiving recess becomes smaller and smaller due to the contraction of the receiving recess in the traction direction. This generates high contact pressure, such that, as described on page 3 / 12 of the specification (CN 122422241 A), at least a portion of the weight of the elevator car is held by the suspension belt and the suspension belt is pulled in the pulling direction, and the suspension belt is also reliably fixed in the device.

[0018] In this specification, the tension on the suspension belt is said to be “sufficient” if the retaining claw is pulled into the receiving recess far enough due to the corresponding tensile force, such that the retaining claw abuts against the corresponding wall of the receiving recess. In this specification, the tensile length of the tension is said to be “sufficient” if the retaining claw is pulled into the receiving recess far enough due to the corresponding tensile force, such that the retaining claw is squeezed together by the wall due to the tensile force, thereby reliably fixing the suspension belt in the retaining claw receiving portion and thus reliably fixing it in the device by means of the retaining claw. The suspension belt being “reliably” fixed can, for example, mean that the suspension belt is sufficiently fixed to hold at least a portion of the weight of the elevator car transmitted from the suspension belt to the device.

[0019] According to one embodiment, the retaining jaws that taper progressively in the pulling direction are wedge-shaped at least in the forward portion of the respective retaining jaw in the pulling direction, thereby forming the taper of the respective retaining jaw. The wedge-shaped portion of the retaining jaw may also be referred to as a wedge portion. The wedge portion may, for example, extend over the entire respective retaining jaw. In other words, the respective retaining jaw may be wedge-shaped and form a retaining wedge.

[0020] According to one embodiment, both retaining jaws taper progressively in the pulling direction. In particular, the two retaining jaws may each have a respective taper wedge portion and thus form a pair of retaining wedges. This allows the two retaining jaws to be designed to engage or at least substantially engage, i.e., for example, except for one or more fastening elements for securing the retaining jaws to each other. This helps to minimize the manufacturing cost when manufacturing the retaining jaws, and thus minimize the manufacturing cost of the device.

[0021] According to one embodiment, the retaining jaws are arranged in a mirror-symmetrical manner. For example, two wedge-shaped portions can together form a wedge, wherein the end of the wedge is formed by the end of the wedge-shaped portion, and wherein the end points in the traction direction. The mirror-symmetric arrangement of the retaining claws specifically means that the retaining claws are arranged mirror-symmetrically with respect to the suspension strap. In other words, the suspension strap may have an axis of symmetry or form an axis of symmetry such that, when viewed from the side (i.e., perpendicular to the traction direction), the retaining claws are designed symmetrically with respect to this axis of symmetry.

[0022] According to one embodiment, on the rearward side of the receiving recess in the traction direction, the receiving recess has a cross-section perpendicular to the traction direction, which is larger than the common cross-section of the two retaining claws in the forward direction. This allows the retaining claws to be at least partially pulled into the receiving recess when sufficient tension is applied. The common cross-section of the two retaining claws includes the cross-section of one retaining claw and the cross-section of the other retaining claw. Due to the tapering of the retaining claws (one or more), the common cross-section of the retaining claws on the front side in the pulling direction can be significantly smaller than the cross-section of the receiving recess on the rear side in the pulling direction.

[0023] According to one embodiment, when sufficient tension is applied to the suspension belt, the increasingly tapering retaining claws in the pulling direction abut against the wall of the receiving recess, wherein the wall is a sliding surface of a ramp formed by the retaining claw receiving portion, and wherein when the suspension belt is pulled, the corresponding retaining claw slides into the receiving recess along the sliding surface. The ramp can, for example, be designed and arranged such that when the retaining claw is pulled into the retaining claw receiving portion by means of the suspension belt, the wedge-shaped portion of the corresponding retaining claw impacts the sliding surface of the ramp.The retaining jaw receptacle can, for example, consist of two parts, wherein when the suspension strap is positioned as intended between the retaining jaws, a first part of the retaining jaw receptacle is positioned on a first side of the suspension strap, and a second part of the retaining jaw receptacle is positioned on a second side of the suspension strap. In this case, one of these parts of the retaining jaw receptacle can have or form the ramp, or both parts of the retaining jaw receptacle can have or form corresponding ramps, particularly if both retaining jaws have wedge-shaped portions. If necessary, the two ramps can, for example, be designed and arranged in a mirror-symmetrical manner. A mirror-symmetrical arrangement of the ramps specifically means that the ramps can be arranged mirror-symmetrically with respect to the suspension strap. In other words, the suspension strap can have an axis of symmetry, and when viewed from the side (i.e., perpendicular to the traction direction), the ramps are symmetrical with respect to this axis of symmetry. The retaining jaw receptacle can, for example, be formed by two ramps. The two ramps can limit the receiving recess in a direction perpendicular to the traction direction and optionally in the traction direction. Optionally, the ramp can substantially engage with the retaining wedge.

[0024] According to one embodiment, the receiving recess of the retaining claw receptacle tapers in the traction direction, such that the retaining claw receptacle forms an end stop for retaining the claw in the traction direction, which prevents further movement of the retaining claw in the traction direction, and thus prevents further movement of the clamped suspension belt in the traction direction. The formation of an end stop for retaining the claw in the traction direction in the retaining claw receptacle means that the retaining claw cannot be pulled past the retaining claw receptacle in the traction direction. This can be achieved in particular by tapering the receiving recess in the traction direction such that the suspension belt can still pass between the components of the retaining claw receptacle, for example, between ramps, but the retaining claw itself can no longer engage between the components of the retaining claw receptacle.

[0025] According to one embodiment, the retaining jaws each have at least one anti-slip surface on their mutually facing sides, which contacts the suspension strap when the suspension strap is positioned as intended to increase friction between the respective retaining jaw and the suspension strap. The anti-slip surface helps to generate particularly high friction between the retaining jaw and the suspension strap. This helps to reliably secure the suspension strap in the device. For example, the two anti-slip surfaces may be designed and / or arranged to overlap or engage relative to the pulling direction. For example, the anti-slip surfaces may contact the same longitudinal portion of the suspension strap but from different sides of the suspension strap. Alternatively, the retaining jaws may each have two or more anti-slip surfaces on their mutually facing sides. The anti-slip surfaces may, for example, each comprise, or be formed of, plastic and / or rubber.

[0026] According to one embodiment, the device has a bracket for fixing the device immovably in the elevator shaft of an elevator system, wherein a retaining gripper receptacle is mechanically connected to the bracket and is fixedly arranged in the elevator shaft by means of the bracket. Optionally, the bracket may have a housing in which the retaining gripper receptacle is fixedly arranged.

[0027] According to one embodiment, the device has a tensioning counterweight arranged relative to the path of the suspension belt on the side of the retaining gripper away from the elevator car, and the tensioning counterweight is suspended on the retaining gripper such that, due to the tensioning counterweight, the suspension belt is pre-tensioned by means of the retaining gripper in the opposite direction of the pulling direction. Regarding the path of the suspension belt between the device and the elevator car, if a friction brake is arranged to absorb most of the weight of the elevator car transmitted by the suspension belt, the tensioning counterweight can help ensure the function of the friction brake, since such a friction brake only works when both ends of the load-bearing element are pulled, as explained in more detail below. The tensile force acting on the load-bearing element on the elevator car side can be significantly greater (e.g., 10 or 100 times greater) than the tensile force acting on the load-bearing element on the side of the device used to fix the suspension belt.

[0028] According to one embodiment, the device has a sliding sensor designed and arranged such that it is possible to detect whether the suspension belt is slipping relative to the retaining gripper. The sliding sensor enables the identification of any possible slippage. Slippage may be caused, for example, by insufficient contact pressure and / or excessive tensile force generated by tension. Therefore, the sliding sensor can help automatically identify insufficient contact pressure or excessive tensile force generated by tension. This contributes to the reliable and safe operation of the elevator system.

[0029] According to one embodiment, the elongating elevator system has a friction brake through which the suspension belt extends. The friction brake is arranged relative to the path of the suspension belt between the elevator car and the device, and is designed to variably fix the suspension belt, thereby absorbing most of the weight of the elevator car transmitted by the suspension belt, such that only a small portion of the weight of the elevator car transmitted by the suspension belt must be held by the device. The friction brake described in this specification (page 5 / 12, CN 122422241 A) is used to absorb most of the weight of the elevator car transmitted by the suspension belt, such that only a small portion of the weight of the elevator car transmitted by the suspension belt must be held by the device. This allows the contact pressure on the suspension belt generated in order to reliably fix the suspension belt in the device by retaining claws to be minimized to the extent that the suspension belt will not be damaged by the retaining claws even if the weight of the elevator car is very large.Without a friction brake, the tensile force in the area of ​​the device would be significantly greater, and therefore the contact pressure used to secure the suspension belt would have to be increased accordingly. This could lead to damage to the suspension belt, especially if it is coated with a plastic layer. In particular, the plastic layer could be damaged by the high contact pressure. If the suspension belt is sufficiently stable, the contact pressure can be increased sufficiently, thus eliminating the need for a friction brake.

[0030] One operating principle of a friction brake is based on the fact that one or more fixed components generate sufficiently strong friction between the component and the suspension belt, such that a large portion of the weight of the elevator car is transferred to the friction brake via friction. The component may, for example, have one or more rollers and / or cylinders, some of which may be fixed, and some of which may be rotatable. The suspension belt being variably secured in the friction brake means that the suspension belt can be secured in the friction brake at different points on the suspension belt. For example, the component can be designed such that under low load and correspondingly low friction, the suspension belt can be easily and variably pulled through the friction brake, thereby allowing the length of the suspension belt on the elevator car side to be variable, and such that under high load (especially when moving the elevator car) due to the correspondingly high friction, the suspension belt cannot be pulled through the friction brake, but is instead fixed by the friction brake and the device, allowing the elevator car to be moved reliably and safely.

[0031] If the elongating elevator system is designed as a climbing elevator, variablely fixed suspension belts may be particularly advantageous. With such climbing elevators, in particular, the machine platform of the elevator system (on which the elevator system's drive motor is secured) can be suspended at different heights within the elevator shaft, and the elevator car can be used to serve different floors of the building, regardless of the current height. However, this requires the ability to change the length of the movable portion of the suspension belt, which is possible, for example, by variablely fixed suspension belts. The “active” portion of the suspension belt is understood to be the part of the suspension belt that bears the tensile force of the elevator car during normal operation of the elevator system. Specifically, the active portion of the suspension belt may extend from the device, through the elevator car and optionally through the counterweight, toward a first end of the suspension belt away from the device, where the suspension belt can be secured, for example, to the machine platform. In contrast, the “inactive” portion of the suspension belt is located behind the device, extending from the elevator car along the path of the suspension belt. This inactive portion does not bear the tensile force of the elevator car due to the friction brake and the device. The length of the inactive portion of the suspension belt varies depending on the height of the elevator and the floors the elevator is currently intended to serve. The longer the active portion becomes, the shorter the inactive portion becomes, and vice versa.

[0032] Embodiments of the invention will now be described with reference to the accompanying drawings, which are not intended to be construed as limiting the invention.

[0033] FIG1 is a side sectional view of an elongating elevator system according to an embodiment of the present invention.

[0034] FIG2 is a side sectional view of a device for fixing a suspension belt in a predetermined traction direction according to an embodiment of the present invention.

[0035] FIG3 is a side sectional view of a device for fixing a suspension belt in a predetermined traction direction according to an embodiment of the present invention.

[0036] FIG4 shows two retaining jaws and a suspension belt according to an embodiment of the present invention. Specification 6 / 12 pages 9 CN 122422241 A

[0037] FIG5 shows two alternative retaining jaws and two suspension belts according to an embodiment of the present invention.

[0038] FIG6 is a perspective view of a device with a tensioning counterweight according to an embodiment of the present invention.

[0039] The drawings are merely schematic and not drawn to scale. In the various drawings, the same reference numerals denote the same or similar features. Detailed Description

[0040] FIG1 is a side sectional view of an elongating elevator system 10 according to an embodiment of the present invention. An extension elevator system 10 is used to transport loads from one floor to another within a building still under construction. The extension elevator system 10 can be specifically designed as a climbing elevator, which can be used, for example, in the case of a new building (particularly if the elevator shaft 12 of the extension elevator system 10 is not yet completed). In this case, the extension elevator system 10 can be used particularly to transport workers and building materials to various existing floors.

[0041] The extension elevator system 10 has an elevator car 14, an at least partially completed elevator shaft 12, at least one suspension belt 20, a drive motor 18, and means for securing the suspension belt 20 in a predetermined traction direction 40. Furthermore, the extension elevator system 10 may have a machine platform 16, a counterweight 22, multiple reversing wheels 26, two buffers 30, a friction brake 32, and / or a suspension belt storage unit 38.

[0042] The elevator car 14 is used to receive a load. The load may be, for example, one or more people and / or goods. The elevator shaft 12 extends from at least one floor to another. The elevator car 14 is arranged in the elevator shaft 12 in a movable manner.

[0043] A suspension belt 20 is mechanically connected to the elevator car 14. The suspension belt 20 is designed to suspend the elevator car 14 of the elevator system 10. For example, a first end 24 of the suspension belt 20 can be fastened to the machine platform 16. From this fastening point, the suspension belt 20 extends from the first end 24 toward the elevator car 14 via the counterweight 22, and further through the friction brake 32 and device 36 toward a second end 46 of the suspension belt 20, which can be stored, for example, in a suspension belt storage 38.Therefore, the path of the suspension belt 20 can extend from the position where the first end 24 is fastened, passing sequentially through the counterweight 22, the elevator car 14, the friction brake 32, the device 36, and towards the suspension belt storage 38. In addition to the suspension belt 20, the extension elevator system 10 may have one, two, or more additional suspension belts 20, which extend, for example, parallel to each other, and the load to be suspended by the suspension belts 20 can be distributed among these suspension belts.

[0044] The drive motor 18 is mechanically coupled to the suspension belt 20. The drive motor 18 is designed to move the elevator car 14 in the elevator shaft 12 by means of the suspension belt 20, for example, in the vertical direction. The drive motor 18 may be arranged on a machine platform 16. The machine platform 16 may be suspended in the elevator shaft 12 at different heights. The vertical movement of the machine platform 16 can be described, for example, as a climbing operation of the extension elevator system 10.

[0045] The device 36 for securing the suspension belt 20 in a predetermined tension direction 40 has two retaining jaws 50 and a retaining jaw receiving portion 52. The retaining jaws 50 and the retaining jaw receiving portion 52 are used to secure the suspension belt 20 in the predetermined tension direction 40. When the device 36 is used as intended, the suspension belt 20 is arranged in the device 36 as intended. In particular, when the suspension belt 20 is arranged as intended, the suspension belt 20 is clamped between the retaining jaws 50. The movement of the retaining jaws 50 in the tension direction 40 is restricted by the retaining jaw receiving portion 52, such that the retaining jaws 50 and the suspension belt 20 thereby clamped are secured in the tension direction 40, in other words, fixed. In other words, the retaining jaw receiving portion 52 forms an end stop for the retaining jaws 50 in the tension direction 40.

[0046] Alternatively, an alternative device (not shown) may be used to secure the suspension belt 20 in the traction direction 40. This alternative device has one or more (holding) rollers instead of holding jaws 50 and a gap instead of holding jaw receptacle 52. When the suspension belt 20 slides, the holding rollers are pulled into the gap, clamped in the gap, and thereby securing the suspension belt 20 in the gap.

[0047] During normal operation of the elevator system 10, the suspension belt 20 is subjected to a portion of the weight of the elevator car 14 applied in the traction direction 40, such that the elevator car 14 pulls the suspension belt 20 in the traction direction 40 during normal operation. For the path of the suspension belt 20 between the device 36 and the elevator car 14, the suspension belt 20 may extend around one or more fixed rollers and / or rotating rollers that may at least partially absorb another portion of the weight of the elevator car 14, so that the device 36 does not bear the entire weight of the elevator car 14.For example, regarding the path of the suspension belt 20, a friction brake 32 may be arranged between the device 36 and the elevator car 14. This friction brake 32 may have rollers capable of bearing most of the force exerted on the suspension belt 20 by the elevator car 14, and this will be explained in more detail below.

[0048] The suspension belt 20 may pass through the friction brake 32. The friction brake 32 is designed to variably fix the suspension belt 20, and thereby absorb most of the weight of the elevator car 14 transmitted by the suspension belt 20, such that only a small portion of the weight of the elevator car 14 transmitted by the suspension belt 20 must be held by the device 36. One operating principle of the friction brake 32 is based on the fact that one or more rotating and / or fixed components (e.g., one or more brake rollers 34) generate sufficiently strong friction between themselves and the suspension belt 20, such that most of the weight of the elevator car 14 is transferred to the friction brake 32 via friction. As an alternative to or supplement to the brake roller 34, the component may, for example, have one or more rotating rollers and / or a fixed cylinder. The component may, for example, be designed such that under low loads and correspondingly low friction, such as in the initial state before the elevator system 10 is put into service, the suspension belt 20 can be easily and variably pulled through the friction brake 32. As a result, the length of the suspension belt 20 on one side of the elevator car 14 is variable and can be adapted to different heights at which the machine platform 16 can be suspended. In contrast, under high loads (especially when moving the elevator car 14), due to the correspondingly high friction, the suspension belt 20 cannot be pulled through the friction brake 32, but is instead secured by the friction brake 32 and the device 36, allowing the elevator car 14 to be reliably and safely moved.

[0049] If the elevating elevator system 10 is designed as a climbing elevator, the variable securing of the suspension belt 20 by means of the friction brake 32 may be particularly advantageous. In fact, if the machine platform 16 is suspended at different heights within the elevator shaft 12 at different times, and if it is to serve different floors of the building by means of the elevator car 14 regardless of the current height, it may be necessary to be able to change the length of the movable portion 42 of the suspension belt 20, which is possible, for example, by variably fixing the suspension belt 20. The “movable” portion 42 of the suspension belt 20 is understood to be the portion of the suspension belt 20 that bears the tensile force of the elevator car 14 during normal operation of the elevator system 10 (i.e., when transporting a load). In particular, the movable portion 42 of the suspension belt 20 may extend from the device 36, through the friction brake 32 where applicable, through the elevator car 14 and optionally through the counterweight 22, toward a first end 24 of the suspension belt 20 away from the device 36, wherein the portion of the movable portion 44 extending between the device 36 and the friction brake 32 bears only a portion of the tensile force borne by the rest of the movable portion 44 due to the friction brake 32.In contrast, the "inactive" portion 44 of the suspension belt 20 is located behind the device 36, extending from the elevator car 14 along the path of the suspension belt 20. This inactive portion 44 does not bear the tensile force of the elevator car 14 due to the friction brake 32 and the device 36. The length of the inactive portion 44 of the suspension belt 20 varies depending on the height of the climbing elevator (particularly the machine platform 16) and the floor the climbing elevator is currently serving. The longer the active portion becomes, the shorter the inactive portion 44 becomes, and vice versa.

[0050] The suspension belt reservoir 38 is arranged relative to the path of the suspension belt 20 on the side of the device 36 away from the elevator car 14. The suspension belt reservoir 38 is designed to receive at least a majority of the inactive portion 44 of the suspension belt 20. This inactive portion 44 of the suspension belt 20 may have a second end 46 of the suspension belt 20. The suspension belt storage 38 may, for example, have a roller 48, which is rotatable and the portion of the suspension belt 20 may be wound onto the roller 48. The suspension belt storage 38, by winding the suspension belt 20 onto the roller 48, allows the inactive portion 44 of the suspension belt 20 that is not currently needed to be safely and gently stored. The roller 48 may, for example, be electrically and / or mechanically rotatable. The suspension belt storage 38 also allows the active portion 42 of the suspension belt 20 to be extended when necessary, for example, by unwinding the suspension belt 20 from the roller 48.

[0051] The buffer 30 below the elevator car 14 and the buffer 30 below the counterweight 22 can serve as a lower limit for the vertical movement of the elevator car 14 or the counterweight 22. The buffer 30 may, for example, be designed as a hydraulic buffer.

[0052] FIG2 shows a side sectional view of a device 36 for securing a suspension belt 20 in a predetermined traction direction 40 according to an embodiment of the present invention.

[0053] At least one of the two retaining claws 50 (e.g., the first retaining claw 54 and the second retaining claw 56 of the retaining claws 50) tapers progressively in the traction direction 40. In other words, the cross-section of the two retaining claws 50 perpendicular to the traction direction 40 becomes smaller and smaller in the traction direction 40. For example, the two retaining claws 50 taper to a point in the traction direction 40, such that sharp edges 64, or in other words, acute edges or acute angles, are formed at their respective ends facing the traction direction. The retaining claws 50 that taper progressively in the traction direction 40 may each be wedge-shaped at least in the forward portion of the retaining claw 50 in the traction direction 40, thereby forming the tapered portion of the retaining claw 50. The wedge-shaped portion of the retaining claw 50 may also be referred to as a wedge portion. The wedge portion may, for example, extend over the entire retaining claw 50. In other words, the retaining jaws 50 can be wedge-shaped, and each can form a retaining wedge. In particular, the retaining jaws 50 can form a pair of retaining wedges.For example, two wedge-shaped portions can jointly form a wedge block, wherein one end of the common wedge block is formed by the pointed edge 64 of the wedge-shaped portion. The retaining claws 50 can, for example, be arranged in a mirror-symmetric manner relative to each other. The mirror-symmetric arrangement of the retaining claws 50 relative to each other specifically means that the retaining claws 50 are arranged in a mirror-symmetric manner relative to the suspension band 20. In other words, the suspension band 20 can have or form an axis of symmetry such that, when viewed from the side (i.e., perpendicular to the traction direction 40), the retaining claws 50 are symmetrical with respect to this axis of symmetry.

[0054] In the suspension band 20 arranged as intended, one retaining claw 50 (e.g., a first retaining claw 54) is arranged on a first side of the suspension band 20, and the other retaining claw 50 (e.g., a second retaining claw 56) is arranged on a second side of the suspension band 20. The two retaining claws 50 can be fastened to each other, for example, by being screwed or clamped together.

[0055] The retaining jaw receiving portion 52 is arranged in front of the retaining jaw 50 in the pulling direction 40. The retaining jaw receiving portion 52 may, for example, consist of two parts, wherein when the suspension belt 20 is arranged as intended between the retaining jaws 50, the first part of the retaining jaw receiving portion 52 is arranged on a first side of the suspension belt 20, and the second part of the retaining jaw receiving portion 52 is arranged on a second side of the suspension belt 20. In this case, these parts of the retaining jaw receiving portion 52 may each have a ramp (specifically a first ramp 58 and a second ramp 60) or be formed by ramps. The two ramps 58, 60 may, for example, be designed and arranged in a mirror-symmetric manner relative to each other. The ramps 58, 60 may be arranged in a mirror-symmetric manner, which specifically means that the ramps 58, 60 may be arranged in a mirror-symmetric manner relative to the suspension belt 20. In other words, the suspension belt 20 may have an axis of symmetry, which the ramps 58, 60 are symmetrical about when viewed from the side (i.e., perpendicular to the pulling direction 40). The retaining jaw receiving portion 52 may be formed, for example, by two ramps 58, 60. Optionally, the ramps 58, 60 may substantially congruent with the retaining wedge, but rotated 180° relative to the retaining wedge, as shown in FIG2.

[0056] The retaining jaw receiving portion 52 has a receiving recess 62 for receiving the retaining jaw 50. For example, the two ramps 58, 60 may limit the receiving recess 62 in a direction perpendicular to the pulling direction 40 and optionally in the pulling direction 40. For example, the receiving recess 62 may be formed by the two ramps 58, 60. The receiving recess 62 opens toward the retaining jaw 50. The receiving recess 62 tapers in the pulling direction 40. In other words, the cross-section of the receiving recess 62 perpendicular to the pulling direction 40 becomes smaller in the pulling direction 40.On the rearward side of the receiving recess 62 in the pulling direction 40, the receiving recess 62 has a cross-section perpendicular to the pulling direction 40, which is larger than the common cross-section of the two retaining claws 50 in the frontward direction 40. The common cross-section of the two retaining claws 50 includes the cross-section of the first retaining claw 54 and the cross-section of the second retaining claw 56. Due to the taper of the retaining claws 50, the common cross-section of the retaining claw 50 on the frontward side of the retaining claw 50 in the pulling direction 40 (e.g., in the region of the ridge 64) can be significantly smaller than the cross-section of the receiving recess 62 on the rearward side in the pulling direction 40.

[0057] When sufficient tension is applied to the suspension belt 20, the retaining claw 50, which tapers progressively in the pulling direction 40, abuts against the wall of the receiving recess 62, wherein the wall has a first sliding surface 68 of a first ramp 58 and a second sliding surface 70 of a second ramp 60. When the suspension belt 20 is tensioned, the retaining claw 50 slides into the receiving recess 62 along the respective sliding surfaces 68, 70. For example, the ramps 58, 60 can be designed and arranged such that when the retaining claw 50 is pulled into the retaining claw receiving portion 52 by means of the suspension belt 20, the wedge-shaped portion of the retaining claw strikes the respective sliding surfaces 68, 70.

[0058] The receiving recess 62 of the retaining claw receiving portion 52 can taper in the pulling direction 40, such that the retaining claw receiving portion 52 forms an end stop for retaining the claw 50 in the pulling direction 40, against which the retaining claw 50 abuts when the tension length on the suspension belt 20 is sufficient. The fact that the retaining claw receiving portion 52 forms an end stop for retaining the claw 50 in the pulling direction 40 means that the retaining claw 50 cannot be pulled beyond the retaining claw receiving portion 52 in the pulling direction 40. This can be achieved in particular by tapering the receiving recess 62 in the pulling direction 40 such that the suspension belt 20 can still pass between the components of the retaining claw receiving portion 52, but the retaining claw 50 itself can no longer engage between the components of the retaining claw receiving portion.

[0059] When the suspension belt 20 is arranged as intended between the retaining claws 50 (as shown in FIG. 2) and there is sufficient tension on the suspension belt 20 in the pulling direction 40, the retaining claws 50 can be pulled into the receiving recess 62 by means of the suspension belt 20 to at least the extent that the retaining claws 50 are at least partially (e.g., completely) arranged in the receiving recess 62, and the retaining claws 50 are squeezed together due to the tapering of the receiving recess 62 and due to the tapering of the corresponding retaining claws 54, 56, so that the suspension belt 20 is secured in the retaining claw receiving portion 62 by means of the retaining claws 50 when there is sufficient stretch length of tension on the suspension belt 20 in the pulling direction 40.

[0060] In the initial state of the device 36, where the elevator system 10 is not operating normally, the suspension belt 20 is not yet subjected to tensile force along the traction direction 40. In the initial state, the suspension belt 20 can be arranged as intended between the retaining jaws 50, and the retaining jaws 50 can be fastened to each other such that the suspension belt 20 is clamped between the retaining jaws 50 with at least slight contact pressure. This contact pressure should be at least large enough that when the suspension belt 20 is pulled in the traction direction 40, the retaining jaws 50 are also moved, in particular pulled into the receiving recess 62.

[0061] In the operating state of the device 36, for example during normal operation of the elevator system 10, the suspension belt 20 is subjected to tensile force along the traction direction 40, particularly due to the weight of the elevator car 14. In the operating state of the device 36, when the two retaining claws 50 abut against the respective walls of the receiving recess 62 under tension caused by the tensile force and this tension is maintained, the two retaining claws 50 are pressed together due to the contraction of the receiving recess 62 and the corresponding contraction of the retaining claws 50, because the space in the receiving recess 62 becomes smaller and smaller due to the contraction of the receiving recess 62 in the traction direction 40. This makes the contact pressure large enough that even if at least a portion of the weight of the elevator car 14 is held by the suspension belt 20 and the suspension belt 20 is pulled in the traction direction 40, the suspension belt 20 can be reliably secured in the device 36.

[0062] Optionally, each of the retaining claws 50 has at least one (e.g., two) anti-slip surfaces 66 on its sides facing each other, which contact the suspension belt 20 when the suspension belt 20 is arranged as intended to increase the friction between the retaining claws 50 and the suspension belt 20. The anti-slip surfaces 66 may, for example, be designed and / or arranged in pairs relative to the traction direction 40, overlapping or engaging with each other. For example, two anti-slip surfaces 66 arranged on different retaining claws 50 may contact the same longitudinal portion of the suspension belt 20, but from different sides of the suspension belt 20. Alternatively, the retaining claws 50 may each have two or more anti-slip surfaces 66 (not shown) on their sides facing each other for each suspension belt 20.

[0063] FIG3 shows a side sectional view of a device 36 for securing a suspension belt 20 in a predetermined traction direction 40 according to an embodiment of the present invention. The device 36 shown in FIG3 may largely correspond to the device 36 explained with reference to FIG2. Therefore, only the features of the device 36 shown in FIG3 that differ from those of the device 36 shown in FIG2 will be described below.

[0064] The device 36 shown in FIG3 has only one retaining jaw that tapers in the pulling direction 40, specifically the first retaining jaw 54. The second retaining jaw 56 may be, for example, cubic in shape.Accordingly, the retaining claw receiving portion 52 may have only one ramp, specifically the first ramp 58. The second ramp 60 may be omitted in this exemplary embodiment. The function of the device 36 shown in FIG3 corresponds in principle to the function of the device 36 shown in FIG2, wherein when sufficient tension is applied to the suspension belt 20 in the pulling direction 40, the suspension belt 20 is clamped between and thus secured between the retaining claws 50 due to the tapering of the first retaining claw 54 (e.g., due to the wedge-shaped design of the first retaining claw 54) and the tapering of the receiving recess 62 (particularly due to the first ramp 58).

[0065] FIG4 shows two retaining claws 50 and the suspension belt 20 according to an embodiment of the invention. The retaining claws 50 may be the retaining claws 50 shown in FIG1, FIG2, or FIG3. The retaining claws 50 are not yet fastened to each other, wherein the device 36 may be in its initial state. In Figure 4, the retaining jaws 50 are “open or with openings”, so that in Figure 4, when the suspension straps 20 are arranged as intended, the mutually facing sides of the retaining jaws 50 are adjacent to each other but not facing each other. Anti-slip surfaces 66 are arranged on these sides. As shown in Figure 4, the two retaining jaws 50 can be two substantially independent components that can be fastened to each other by means of fasteners (e.g., screws and nuts) when the suspension straps 20 are arranged between the two retaining jaws 50. Alternatively, the two retaining jaws 50 can be connected to each other by one or more hinges, such that the two retaining jaws 50 can have openings to allow the suspension straps 20 to be arranged between the retaining jaws 50, and then close again.

[0066] Figure 5 shows two alternative retaining jaws 50 and two suspension straps 20 according to an embodiment of the invention. The two suspension straps 20 can, for example, extend parallel to each other, and the load to be suspended (in particular the weight of the elevator car 14 and / or the counterweight 22) can be distributed between the two suspension straps 20. The retaining claw 50 can be the retaining claw 50 shown in FIG. 1, FIG. 2 or FIG. 3. The retaining claw 50 can largely correspond to the retaining claw 50 shown in FIG. 4. Therefore, only the features of the retaining claw 50 shown in FIG. 5 that differ from the retaining claw 50 explained with reference to FIG. 4 will be described below.

[0067] Each retaining claw 50 is designed such that, in particular, the width of each retaining claw is designed such that two suspension straps 20 can be arranged side by side between the retaining claws 50. Each retaining claw 50 may have an anti-slip surface 66 for each suspension strap 20, as shown in FIG. 5. Thus, for example in the case of four suspension straps 20, four anti-slip surfaces 66 can be arranged accordingly. Alternatively, each retaining claw 50 may have only one anti-slip surface 66, which is designed to have a width such that the anti-slip surface extends over all suspension straps 20 (not shown).

[0068] FIG6 is a perspective view of a device 36 having a tensioning counterweight 74 according to an embodiment of the present invention.

[0069] The device 36 may have a bracket 72 for fixing the device 36 immovably in an elevator shaft 12. A retaining claw receiving portion 52 may be mechanically coupled to the bracket 72. The retaining claw receiving portion 52 may be fixedly arranged in the elevator shaft 12 by means of the bracket 72. Optionally, the bracket 72 may have a housing in which the retaining claw receiving portion 52 is fixedly arranged.

[0070] The tensioning counterweight 74 is arranged on the side of the retaining claw 50 away from the elevator car 14 relative to the path of the suspension belt 20. The tensioning counterweight 74 is suspended on the retaining claw 50 such that, due to the tensioning counterweight 74, the suspension belt 20 is pre-tensioned by means of the retaining claw 50 in the opposite direction of the pulling direction 40.

[0071] The device 36 may have a sliding sensor 78, which is designed and arranged to detect whether the suspension belt 20 is slipping relative to the retaining gripper 50. The sliding sensor 78 enables the identification of any slippage that may occur. If slippage is identified, one or more safety measures can be taken. For example, the elevator controller (not shown) of the elevator system 10 may stop the operation of the drive motor 18 and / or activate the parking brake (not shown) of the elevator system 10, wherein the activated parking brake prevents the elevator car 14 from being displaced.

[0072] Finally, it should be noted that terms such as “having” or “comprising” do not exclude other elements or steps, and terms such as “a” or “an” do not exclude multiple. Furthermore, it should be noted that the features or steps described with reference to one of the exemplary embodiments described above may also be used in combination with other features or steps of the other exemplary embodiments described above. Reference numerals in the claims should not be construed as limiting. Instruction manual, page 12 / 12, 15 CN 122422241 A, Figure 1; Instruction manual, Figure 1 / 5, page 16 CN 122422241 A, Figure 2; Figure 3; Instruction manual, Figure 2 / 5, page 17 CN 122422241 A, Figure 4; Instruction manual, Figure 3 / 5, page 18 CN 122422241 A, Figure 5; Instruction manual, Figure 4 / 5, page 19 CN 122422241 A, Figure 6; Instruction manual, Figure 5 / 5, page 20 CN 122422241 A.

Claims

1. A device (36) for securing a suspension belt (20) in a predetermined traction direction (40), wherein the suspension belt (20) is designed to suspend an elevator car (14) of an elevator system (10) that grows therefrom, the device (36) having: Two retaining jaws (50) are used to clamp the suspension belt (20), wherein when the suspension belt (20) is positioned as intended, the suspension belt (20) is clamped between the retaining jaws (50), and wherein, At least one of the retaining jaws (50) gradually tapers in the pulling direction (40); and A retaining jaw receiving portion (52) is arranged in front of the retaining jaws (50) in the pulling direction (40) and has a receiving recess (62) for receiving the retaining jaws (50). The receiving recess (62) opens toward the retaining jaws (50) and tapers in the pulling direction (40) so that when the suspension straps (20) are positioned as intended between the retaining jaws (50) and when there is sufficient tension on the suspension straps (20) along the pulling direction (40), the retaining jaws (50) can be held by means of the suspension straps (50). 20) is pulled into the receiving recess (62) at least far enough such that the retaining claw (50) is at least partially arranged in the receiving recess (62) and is squeezed together by means of the retaining claw (50, 54, 56) due to the tapering of the receiving recess (62) and due to the tapering of the corresponding retaining claws (50, 54, 56), so that the suspension belt (20) is secured in the retaining claw receiving portion (52) by means of the retaining claw (50) with sufficient stretch length of tension along the pulling direction (40) on the suspension belt (20).

2. The apparatus (36) according to claim 1, wherein, The retaining jaws (54, 56) that gradually taper in the pulling direction (40) are wedge-shaped at least in the forward portion of the respective retaining jaws (54, 56) in the pulling direction (40), thus forming the taper of the respective retaining jaws (54, 56).

3. The apparatus (36) according to claim 1 or 2, wherein, The two retaining claws (50) gradually narrow in the pulling direction (40).

4. The apparatus (36) according to any one of the preceding claims, wherein, The retaining grippers (50) are arranged in a mirror-symmetric manner.

5. The apparatus (36) according to any one of the preceding claims, wherein, On the rear side of the receiving recess (62) in the pulling direction (40), the receiving recess (62) has a cross section perpendicular to the pulling direction (40), which is larger than the common cross section of the two retaining claws (50) in the front in the pulling direction (40).

6. The apparatus (36) according to any one of the preceding claims, wherein, When sufficient tension is applied to the suspension belt (20), the retaining claws (54, 56), which gradually taper in the pulling direction (40), abut against the wall of the receiving recess (62), and The wall portion is a sliding surface (68, 70) of a ramp (58, 60) formed by the retaining claw receiving portion (52), wherein when the suspension belt (20) is pulled, the corresponding retaining claws (54, 56) slide along the sliding surface (68, 70) into the receiving recess (62).

7. The apparatus (36) according to any one of the preceding claims, wherein, The receiving recess (62) of the retaining claw receiving portion (52) tapers in the pulling direction (40) such that the retaining claw receiving portion (52) forms an end stop for the retaining claw (50) in the pulling direction (40), the end stop preventing the retaining claw (50) from moving further in the pulling direction (40), and thus preventing the clamped suspension belt (20) from moving further in the pulling direction (40).

8. The apparatus (36) according to any one of the preceding claims, wherein, Each of the retaining claws (50) has at least one anti-slip surface (66) on its face-to-face side, and when the suspension belt (20) is arranged as intended, the at least one anti-slip surface (66) contacts the suspension belt (20) to increase the friction between the respective retaining claws (54, 56) and the suspension belt (20).

9. The device (36) according to any one of the preceding claims has a support (72). The bracket (72) is used to securely fasten the device (36) in the elevator shaft (12) of the elevator system (10), wherein the retaining claw receiving part (52) is mechanically connected to the bracket (72), and the retaining claw receiving part (52) is fixedly arranged in the elevator shaft (12) by means of the bracket (72).

10. The device (36) according to any one of the preceding claims has a tensioning counterweight (74). The tensioning counterweight (74) is arranged relative to the path of the suspension belt (20) on the side of the retaining clamp (50) away from the elevator car (14), and the tensioning counterweight (74) is suspended on the retaining clamp (50) such that the suspension belt (20) is pre-tensioned by means of the retaining clamp (50) in the opposite direction to the pulling direction (40).

11. The device (36) according to any one of the preceding claims has a sliding sensor (78). The sliding sensor (78) is designed and arranged such that it is possible to detect whether the suspension belt (20) is sliding relative to the retaining gripper (50).

12. An ascending elevator system (10) for transporting loads from one floor to another within a building under construction, the elevator system (10) having: An elevator car (14) for receiving the load; An elevator shaft (12) is provided, the height of which increases with the height of the building during the construction phase of the building, the elevator shaft (12) extends at least from one floor to the next floor, and the elevator car (14) is arranged in the elevator shaft (12) in a displaceable manner. The suspension belt (20) is mechanically connected to the elevator car (14). A drive unit (18) is mechanically connected to the suspension belt (20) and is designed to move the elevator car (14) within the elevator shaft (12) by means of the suspension belt (20); A device (36) for securing the suspension belt (20), wherein a portion of the suspension belt (20) is disposed in the device (36); as well as A suspension belt storage (38) is arranged on the side of the device (36) away from the elevator car (14) relative to the path of the suspension belt (20), and the suspension belt storage (38) is designed to receive the portion of the suspension belt (20) located on the side of the device (36) for fixing the suspension belt (20) away from the elevator car (14) relative to the path of the suspension belt (20).

13. The growth elevator system (10) according to claim 12, having a friction brake (32). The suspension belt (20) extends through the friction brake (32), the friction brake (32) being arranged relative to the path of the suspension belt (20) between the elevator car (14) and the device (36), and the friction brake (32) being designed to variably fix the suspension belt (20), thereby absorbing most of the weight of the elevator car (14) transmitted by the suspension belt (20), such that only a small portion of the weight of the elevator car (14) transmitted by the suspension belt (20) must be held by the device (36).

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