Hoisting device for a wind turbine tower and hoisting system

Abstract

The application provides a hoisting device for a fan tower and a hoisting system, and relates to the technical field of hoisting devices. The hoisting device comprises a flexible belt and a hoisting assembly. The symmetrical center of the length direction of the flexible belt is configured to be connected with the hoisting end of a crane. The hoisting assembly comprises a boom and two hoisting units. The two hoisting units are respectively connected with the two ends of the flexible belt and are detachably connected with the boom along the axial direction of the boom. Each hoisting unit has a hoisting piece. The position of at least one of the two hoisting units on the boom is adjustable, so that the two hoisting pieces are respectively opposite to and connected with the corresponding hoisting connection structures. In this way, when different diameter pipe segments or pipe segments with different hoisting point positions need to be hoisted, the position of the hoisting unit on the boom can be adjusted, and the hoisting device does not need to be replaced, thereby improving the adaptability of the hoisting device, saving the replacement step and simplifying the hoisting operation.

Description

Technical Field

[0001] This application relates to the field of hoisting equipment technology, and in particular to a hoisting device and lifting system for wind turbine towers. Background Technology

[0002] The wind turbine tower is the component that supports the wind turbine generator for high-altitude power generation. The wind turbine tower is composed of multiple segments, each of which is made of concrete. After the segments are manufactured, the process of moving the segments from the manufacturing location to the transport vehicle and from the transport vehicle to the installation location involves the hoisting of the segments, which in turn involves hoisting equipment.

[0003] In related technologies, concrete segment hoisting devices use fixed hoisting devices. The hoisting components of the fixed hoisting device are directly connected to the segments, and its structure is not adjustable. Therefore, when dealing with segments of different diameters or with different hoisting point positions, it is necessary to replace the fixed hoisting device with one that has the corresponding hoisting dimensions.

[0004] Therefore, in the relevant technologies, multiple fixed hoisting devices with different hoisting sizes are required during the hoisting of tunnel segments. This results in the technical problem of low adaptability of individual hoisting devices, leading to complex tunnel segment hoisting operations. Utility Model Content

[0005] This application provides a hoisting device and lifting system for wind turbine towers, aiming to solve the technical problem of low adaptability of hoisting devices, which leads to complicated segment hoisting operations, so as to improve the adaptability of hoisting devices and simplify operations.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] The first aspect of this application provides a hoisting device for a wind turbine tower, the wind turbine tower comprising a plurality of segments, each segment having two hoisting connection structures located on the same horizontal plane and spaced apart, the hoisting device comprising:

[0008] A flexible belt, the center of symmetry along its length being configured to connect to the lifting end of the crane;

[0009] The hoisting assembly includes a boom and two hoisting units. The two hoisting units are respectively connected to both ends of the flexible belt and are detachably connected to the boom in sequence along the axial direction of the boom. Each hoisting unit has a hoisting component. The position of at least one of the two hoisting units on the boom is adjustable so that the two hoisting components are respectively opposite to and connected to the corresponding hoisting connection structure.

[0010] In some embodiments, the hoisting unit further includes an adjusting member and a locking member. One end of the adjusting member is detachably connected to one end of the flexible belt, and the other end is detachably connected to the hoisting member. Furthermore, the adjusting member is detachably connected to the boom and its position on the boom is adjustable.

[0011] The locking member is configured to lock the adjusting member and the boom so that the adjusting member is fixed relative to the boom.

[0012] In some embodiments, the adjusting member is slidably connected to the boom.

[0013] In some embodiments, the adjusting member has a sliding hole, and the adjusting member is sleeved on the outer peripheral wall of the boom through the sliding hole.

[0014] In some embodiments, the inner wall surface of the sliding hole has one of a roller and a guide rail, and the outer wall surface of the boom has the other of the roller and the guide rail, wherein the roller matches the guide rail; or...

[0015] The inner wall of the sliding hole has one of a slider and a sliding groove, and the outer wall of the rod has the other of the slider and the sliding groove, wherein the slider matches the sliding groove.

[0016] In some embodiments, the locking member is a locking bolt, the adjusting member has a threaded through hole extending radially along the boom, the boom has a limiting groove, the threaded through hole and the limiting groove are oppositely disposed, and the locking bolt is threadedly connected to the threaded through hole so that the locking bolt abuts against the limiting groove to limit the movement of the adjusting member along the axial direction of the boom; or...

[0017] The locking component includes a first magnetic component and a second magnetic component. The first magnetic component is disposed on the adjusting component, and the second magnetic component is disposed on the lifting rod. The first magnetic component and the second magnetic component are magnetically connected.

[0018] In some embodiments, the hoisting device further includes a distance detection element disposed on at least one of the two hoisting units, the distance detection element being configured to detect the position of each of the hoisting units on the boom, and the distance between the two hoisting units; and / or,

[0019] The hoisting device further includes a controller and a drive unit, the drive unit being configured to drive the adjusting member to slide relative to the boom, the drive unit being electrically connected to the controller.

[0020] In some embodiments, a first break ring and a first fastener are provided between the flexible strip and the adjusting member. Both ends of the flexible strip and the end of the adjusting member near the flexible strip each have a first through hole. When the first break ring passes through the first through hole at the corresponding end of the adjusting member and the flexible strip, the first fastener closes the opening of the first break ring; and / or,

[0021] A second break ring and a second fastener are provided between the adjusting member and the lifting member. Both the adjusting member and the lifting member have a second through hole at their adjacent ends. When the second break ring passes through the second through hole of the adjusting member and the corresponding lifting member, the second fastener closes the opening of the second break ring; and / or,

[0022] The lifting component has a third break ring and a third fastener at the end away from the adjusting component, and has a third through hole. When the third break ring passes through the third through hole, the third fastener closes the opening of the third break ring.

[0023] In some embodiments, when the end of the lifting member away from the adjusting member has a third break ring and a third fastener, and has a third through hole, the third break ring has a through hole and a threaded connector, the lifting connection structure is a threaded hole, and the threaded connector passes through the through hole and is threadedly connected to the threaded hole.

[0024] A second aspect of this application provides a lifting and hoisting system, including a crane and a hoisting device as described in any of the preceding embodiments.

[0025] The hoisting device for wind turbine towers provided in this application embodiment has hoisting units set at both ends of a flexible component. The hoisting units are detachably connected to the lifting rod, and the position of at least one of the two hoisting units on the lifting rod is adjustable. This allows the distance between the two hoisting components in the two hoisting units to be adjustable, so that the distance between the two hoisting components can be adapted to the distance between the two hoisting connection structures on the tunnel segment. In this way, when it is necessary to hoist tunnel segments of different diameters or with different hoisting point positions, the position of the hoisting unit on the lifting rod can be adjusted. The same hoisting device can be used without changing the hoisting device, thereby improving the adaptability of the hoisting device, saving replacement steps, and simplifying the hoisting operation.

[0026] Furthermore, the lifting units are detachably connected to the lifting boom, which provides support and guidance for the lifting units. One end of each lifting unit is connected to the flexible belt, and the other end is connected to the tunnel segment via a lifting component. Therefore, during the lifting of the tunnel segment, the lifting boom is subjected to a horizontal force from the flexible belt, and the lifting component is subjected to a vertical tensile force from the flexible belt. The lifting boom is not subjected to a vertical tensile force from the flexible belt, and the lifting component is not subjected to a horizontal tensile force from the flexible belt. This prevents the lifting boom from being subjected to torque, reducing the likelihood of brittle fracture and extending its service life. In addition, the flexible belt absorbs impact loads generated during the lifting of the tunnel segment, such as the inertial load generated at the moment of lifting and the swaying load generated by slight swaying of the segment in the air, thus preventing impact damage to structural components on the crane or lifting device. Moreover, the flexible belt is lightweight, foldable, and easy to handle, install, and operate.

[0027] The lifting and hoisting system provided in this application has the same beneficial effects as the hoisting device provided in the above embodiments, and will not be described again here.

[0028] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the hoisting device and lifting system for wind turbine towers provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the hoisting device provided in an embodiment of this application from a first-view perspective;

[0031] Figure 2 A schematic diagram of the hoisting device provided in an embodiment of this application from a second perspective;

[0032] Figure 3 A schematic diagram of the hoisting device provided in an embodiment of this application from a third-person perspective;

[0033] Figure 4 A schematic diagram of the hoisting device provided in an embodiment of this application from a fourth-person perspective;

[0034] Figure 5 for Figure 1 A magnified view of a section at point A in the middle;

[0035] Figure 6 for Figure 2 A magnified view of a section at point B in the middle;

[0036] Figure 7 for Figure 3 A magnified view of a section at point C.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100 - Lifting device; 200 - Segment;

[0039] 110 - Flexible belt; 120 - Lifting assembly;

[0040] 121-Lifting boom; 122-Lifting unit;

[0041] 1221-Lifting component; 1222-Adjusting component; 1223-Sliding hole;

[0042] 130 - First fracture ring; 140 - Second fracture ring; 150 - Third fracture ring. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] The wind turbine tower is the component that supports the wind turbine generator for high-altitude power generation. The wind turbine tower is composed of multiple segments, each of which is made of concrete. After the segments are manufactured, the process of moving the segments from the manufacturing location to the transport vehicle and from the transport vehicle to the installation location involves the hoisting of the segments, which in turn involves hoisting equipment.

[0045] This application provides a lifting and hoisting system, which includes a crane and a hoisting device for hoisting wind turbine towers. Exemplary cranes include, but are not limited to, tower cranes, gantry cranes, bridge cranes, mast cranes, etc.

[0046] The crane has a lifting end, and the wind turbine tower includes multiple segments. Each segment has two hoisting connection structures located on the same horizontal plane and spaced apart. One end of the hoisting device is connected to the lifting end, and the other end is connected to the hoisting connection structure on the segment to be hoisted. Thus, under the control of the crane, the segment moves to the target position with the hoisting device.

[0047] In some embodiments, the hoisting device is a fixed hoisting device. The hoisting component of the fixed hoisting device is directly connected to the tunnel segment, and its structure is not adjustable. Therefore, when dealing with tunnel segments of different diameters, such as 5~8m, or with different hoisting point positions, it is necessary to replace it with a fixed hoisting device with corresponding hoisting dimensions.

[0048] Therefore, during the segment hoisting process, multiple fixed hoisting devices with different hoisting sizes are required. This presents a technical problem of low adaptability of individual hoisting devices, leading to complex segment hoisting operations.

[0049] To address the aforementioned technical problems, this application provides a hoisting device for wind turbine towers.

[0050] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the hoisting device 100 includes a flexible belt 110 and a hoisting assembly 120.

[0051] The flexible belt 110 is configured to connect to the lifting end of a crane at its symmetrical center along its length; for example, the lifting end of the crane has a hook that is hooked to the flexible belt 110.

[0052] For example, the flexible belt 110 can be a steel wire rope, nylon fiber belt, polyester fiber belt, polypropylene fiber belt, etc.

[0053] The lifting assembly 120 includes a lifting rod 121 and two lifting units 122. The two lifting units 122 are respectively connected to both ends of the flexible belt 110 and are detachably connected to the lifting rod 121 sequentially along its axial direction. Each lifting unit 122 has a lifting component 1221. At least one of the two lifting units 122 is adjustable in position on the lifting rod 121 so that the two lifting components 1221 are respectively aligned with and connected to corresponding lifting connection structures, i.e., as shown... Figure 2 The lifting state shown ensures that during the lifting of segments 200 with different diameters or different lifting point positions, the segments 200 only bear their own downward gravity and the upward tension from the lifting member 1221 to resist gravity. They are not subjected to a component force with an angle to the vertical direction. This simplifies the stress on the segments 200 and reduces damage to the segments 200 during the lifting process.

[0054] For example, along the axial direction of the boom 121, the cross-sectional shape of the boom 121 can be square, circular, elliptical, polygonal, etc. In this embodiment, the cross-sectional shape of the boom 121 is square as an example for illustration.

[0055] In another example, the lifting component 1221 is a lifting rod, which enhances the lifting strength between the lifting unit 122 and the segment 200, while increasing the spacing between the lifting rod 121 and the segment 200 to provide operable space for connection between the lifting unit 122 and the segment 200.

[0056] In this embodiment, by providing lifting units 122 at both ends of the flexible component, the lifting units 122 are detachably connected to the lifting rod 121, and the position of at least one of the two lifting units 122 on the lifting rod 121 is adjustable. This allows the distance between the two lifting components 1221 in the two lifting units 122 to be adjusted so that the distance between the two lifting components 1221 is adapted to the distance between the two lifting connection structures on the segment 200. Thus, when it is necessary to lift segments 200 with different diameters or different lifting point positions, the position of the lifting unit 122 on the lifting rod 121 can be adjusted. The same lifting device 100 can be used without replacing the lifting device 100, thereby improving the adaptability of the lifting device 100, saving replacement steps, and simplifying the lifting operation.

[0057] Furthermore, the lifting unit 122 is detachably connected to the lifting rod 121, which provides support and guidance for the lifting unit 122. One end of each lifting unit 122 is connected to the flexible belt 110, and the other end is connected to the segment 200 through the lifting component 1221. Therefore, during the lifting of the segment 200, the lifting rod 121 will be subjected to a horizontal component force from the flexible belt 110, and the lifting component 1221 will be subjected to a vertical tensile force from the flexible belt 110. The lifting rod 121 will not be subjected to a vertical tensile force from the flexible belt 110, and the lifting component 1221 will not be subjected to a horizontal tensile force from the flexible belt 110. This prevents the lifting rod 121 from being subjected to torque, thereby reducing the occurrence of brittle fracture of the lifting rod 121 and improving its service life.

[0058] In addition, the flexible belt 110 can absorb the impact load generated during the hoisting of the segment 200, such as the inertial load generated at the moment of hoisting and the sway load generated by the slight swaying of the segment 200 in the air, thereby avoiding impact damage to the structural components on the crane or hoisting device 100; and the flexible belt 110 is lightweight, foldable and easy to store, and convenient and quick to handle, install and operate.

[0059] Furthermore, such as Figure 5 , Figure 6 and Figure 7As shown, the hoisting unit 122 also includes an adjusting member 1222 and a locking member (not shown in the figure).

[0060] Among them, such as Figure 1 , Figure 2 As shown, one end of the adjusting member 1222 is detachably connected to one end of the flexible belt 110, and the other end is detachably connected to the lifting member 1221. Furthermore, the adjusting member 1222 is detachably connected to the lifting rod 121 and its position on the lifting rod 121 is adjustable, so that the lifting unit 122 can be adjusted by adjusting the position of the adjusting member 1222 on the lifting rod 121, so that the two lifting members 1221 are respectively opposite to and connected to the corresponding lifting connection structure, thereby improving the adaptability of the lifting device 100.

[0061] In some embodiments, the adjusting member 1222 is slidably connected to the boom 121 to reduce the friction between the two during the adjustment of the position of the adjusting member 1222 on the boom 121, thereby making the adjustment of the adjusting member 1222 smoother and faster.

[0062] For example, such as Figure 7 As shown, the adjusting member 1222 has a sliding hole 1223. The adjusting member 1222 is sleeved on the outer peripheral wall of the lifting rod 121 through the sliding hole 1223, so that the adjusting member 1222 is detachably connected to the lifting rod 121 and can slide relative to the lifting rod 121. Of course, along the axial direction of the lifting rod 121, the cross-sectional shape of the sliding hole 1223 matches the cross-sectional shape of the lifting rod 121.

[0063] In some specific embodiments, the inner wall surface of the sliding hole 1223 has one of a roller and a guide rail, and the outer wall surface of the lifting rod 121 has the other of a roller and a guide rail. The roller and the guide rail are matched, so that the adjusting member 1222 slides relative to the lifting rod 121 through the roller and the guide rail. The matching setting of the roller and the guide rail reduces the sliding friction between the adjusting member 1222 and the lifting rod 121, while having a simple structure, being less prone to jamming, and having high motion accuracy.

[0064] In other specific embodiments, the inner wall surface of the sliding hole 1223 has one of a slider and a sliding groove, and the outer wall surface of the hanger rod 121 has the other of a slider and a sliding groove. The slider and the sliding groove are matched, so that the adjusting member 1222 slides relative to the hanger rod 121 through the slider and the sliding groove. The matching setting of the slider and the sliding groove reduces the sliding friction between the adjusting member 1222 and the hanger rod 121, while having a compact structure, high guiding accuracy, and strong load-bearing capacity.

[0065] The locking element is configured to lock the adjusting element 1222 and the lifting rod 121, thereby fixing the adjusting element 1222 relative to the lifting rod 121. It should be noted that after adjusting the position of the adjusting element 1222 on the lifting rod 121, the locking element is used to lock the adjusting element 1222 and the lifting rod 121, thereby preventing the adjusting element 1222 from moving on the lifting rod 121 during the hoisting of the segment 200. This configuration ensures that the lifting rod 121 is only subjected to the horizontal component of the force from the flexible belt 110.

[0066] As an example, the locking element is a locking bolt, the adjusting element 1222 has a threaded through hole extending radially along the lifting rod 121, the lifting rod 121 has a limiting groove, the threaded through hole and the limiting groove are arranged opposite to each other, the locking bolt is threadedly connected to the threaded through hole so that the locking bolt abuts against the limiting groove, thereby limiting the movement of the adjusting element 1222 along the axial direction of the lifting rod 121. This configuration is simple, reliable and easy to implement.

[0067] Secondly, as an example, the locking component includes a first magnetic component and a second magnetic component. The first magnetic component is disposed on the adjusting component 1222, and the second magnetic component is disposed on the lifting rod 121. The first magnetic component and the second magnetic component are magnetically connected. This configuration allows the adjusting component 1222 and the lifting rod 121 to be quickly fixed without manual locking, further reducing operation time, and also has strong reusability and reduces wear.

[0068] Specifically, the first magnetic chuck is one of an electromagnetic chuck and a permanent magnet, and the second magnetic chuck is the other of an electromagnetic chuck and a permanent magnet. During the process of adjusting the position of the adjusting component 1222 on the lifting rod 121, the electromagnetic chuck is de-energized. After the position of the adjusting component 1222 on the lifting rod 121 is adjusted, the electromagnetic chuck is energized.

[0069] In addition, in some embodiments, the hoisting device 100 also includes a distance detection element, which is disposed on at least one of the two hoisting units 122. The distance detection element is configured to detect the position of each hoisting unit 122 on the boom 121 and the distance between the two hoisting units 122. In this way, based on the distance detected by the distance detection element, the specific position of each adjusting member 1222 on the boom 121 can be adjusted as a whole, so that the spacing between the two corresponding hoisting members 1221 is adapted to the distance between the two hoisting connection structures on the segment 200. At the same time, the two adjusting members 1222 can be controlled to be symmetrically distributed on the boom 121 along the axial direction of the boom 121. Thus, during the hoisting of the segment 200, the center of gravity of the boom 121 and the center of gravity of the entire hoisting device 100 are distributed on the same vertical line, thereby avoiding the occurrence of uneven sinking of the hoisting device 100 and making the overall force of the hoisting device 100 more uniform, so as to improve the hoisting reliability of the hoisting device 100.

[0070] For example, the distance detection device is one of a laser rangefinder, an infrared rangefinder, or an ultrasonic sensor.

[0071] In some embodiments, the hoisting device 100 further includes a controller and a drive member, the drive member being configured to drive the adjustment member 1222 to slide relative to the boom 121, the drive member being electrically connected to the controller, thereby improving the adjustment accuracy of the adjustment member 1222 and reducing the operation time of adjusting the adjustment member 1222.

[0072] For example, two driving components are respectively provided at both ends of the boom 121. Each driving component can be a combination of a hydraulic cylinder and a hydraulic rod. The hydraulic cylinder is fixed to one end of the boom 121, and the end of the hydraulic rod away from the hydraulic cylinder is fixedly connected to the adjusting component 1222. The fixed connection between the hydraulic cylinder and the boom 121, and between the hydraulic rod and the adjusting component 1222, includes, but is not limited to, bonding, welding, and snap-fit ​​connection. Alternatively, each driving component includes a drive motor, a lead screw, and a lead screw nut. The drive motor is fixed to one end of the boom 121, the lead screw extends in the same direction as the boom 121 and is connected to the drive motor, and the lead screw nut is fixedly connected to the adjusting component 1222 and screw-connected to the lead screw. The fixed connection between the drive motor and the boom 121, and between the lead screw nut and the adjusting component 1222, includes, but is not limited to, bonding, welding, and snap-fit ​​connection.

[0073] When it is necessary to adjust the distance between the two lifting components 1221, the controller controls the two drive components to drive the corresponding adjustment components 1222 to move in the directions of moving away from each other and moving closer to each other, so as to adapt to the distance between the two lifting connection structures on the segment 200. This makes the positions of the two lifting units 122 on the boom 121 symmetrical along the axial direction of the boom 121, so that the center of gravity of the boom 121 and the center of gravity of the entire lifting device 100 are distributed on the same vertical line, thereby avoiding the occurrence of uneven weighting of the lifting device 100, making the overall force of the lifting device 100 more uniform, and improving the lifting reliability of the lifting device 100.

[0074] In some embodiments, the flexible belt 110 and the adjusting member 1222, the adjusting member 1222 and the lifting member 1221, and the lifting member 1221 and the segment 200 lifting connection structure are all detachable connections. This facilitates the timely maintenance and replacement of each component of the lifting device 100 without requiring a complete replacement of the lifting device 100, reducing operation time and avoiding resource waste. The detachable connection methods are as follows:

[0075] like Figure 5 , Figure 6 and Figure 7As shown, a first break ring 130 and a first fastener are provided between the flexible belt 110 and the adjusting member 1222. Both ends of the flexible belt 110 and the end of the adjusting member 1222 near the flexible belt 110 have first through holes. When the first break ring 130 passes through the first through holes at the corresponding ends of the adjusting member 1222 and the flexible belt 110, the first fastener closes the opening of the first break ring 130. Thus, the first break ring 130 can be detachably connected through the first fastener, so that the adjusting member 1222 and the flexible belt 110 can be detachably connected, which facilitates the maintenance and replacement of the flexible belt 110 or the adjusting member 1222.

[0076] like Figure 5 , Figure 6 and Figure 7 As shown, there is a second break ring 140 and a second fastener between the adjusting component 1222 and the lifting component 1221. The ends of the adjusting component 1222 and the lifting component 1221 that are close to each other have a second through hole. When the second break ring 140 passes through the second through hole of the adjusting component 1222 and the corresponding lifting component 1221, the second fastener closes the ring opening of the second break ring 140. Thus, the second break ring 140 can be detachably connected through the second fastener, so that the adjusting component 1222 and the lifting component 1221 can be detachably connected, which facilitates the maintenance and replacement of the lifting component 1221 or the adjusting component 1222.

[0077] like Figure 5 and Figure 7 As shown, the end of the lifting component 1221 away from the adjusting component 1222 has a third break ring 150 and a third fastener, and has a third through hole. When the third break ring 150 passes through the third through hole, the third fastener closes the ring opening of the third break ring 150, so that the third break ring 150 can be detachably connected through the third fastener.

[0078] Furthermore, when the end of the lifting component 1221 away from the adjusting component 1222 has a third break ring 150 and a third fastener, and has a third through hole, the third break ring 150 has a through hole and a threaded connector. The lifting connection structure is a threaded hole, and the threaded connector is threadedly connected to the threaded hole through the through hole, thereby making the lifting component 1221 and the segment 200 lifting connection structure detachable.

[0079] For example, the first, second, and third fasteners can all be bolt and nut assemblies, and each of the first port ring, the second break ring 140, and the third break ring 150 has through holes at both ends of the break for the bolt to pass through. The threaded connector is also a bolt; however, a wrench can be used to assist in tightening during the threaded connection between the threaded connector and the hoisting connection structure.

[0080] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments" used in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not all embodiments necessarily include that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0081] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "one" can be understood to convey either singular or plural usage.

[0082] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something,” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “above something” or “on top of something,” but also “on something” or “on top of something” without an intermediate feature or layer therebetween, i.e., directly on something.

[0083] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations rotated 90° or be in other orientations, and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A hoisting device for a wind turbine tower, the wind turbine tower comprising a plurality of segments, each segment having two hoisting connection structures located on the same horizontal plane and spaced apart, characterized in that, The hoisting device includes: A flexible belt (110) is configured to connect to the lifting end of a crane at the center of symmetry along its length. The hoisting assembly (120) includes a hoisting rod (121) and two hoisting units (122). The two hoisting units (122) are respectively connected to both ends of the flexible belt (110) and are detachably connected to the hoisting rod (121) in sequence along the axial direction of the hoisting rod (121). Each hoisting unit (122) has a hoisting component (1221). The position of at least one of the two hoisting units (122) on the hoisting rod (121) is adjustable so that the two hoisting components (1221) are respectively opposite to and connected to the corresponding hoisting connection structure.

2. The hoisting device according to claim 1, characterized in that, The hoisting unit (122) further includes an adjusting member (1222) and a locking member. One end of the adjusting member (1222) is detachably connected to one end of the flexible belt (110), and the other end is detachably connected to the hoisting member (1221). Furthermore, the adjusting member (1222) is detachably connected to the hoisting rod (121) and its position on the hoisting rod (121) is adjustable. The locking member is configured to lock the adjusting member (1222) and the boom (121) so that the adjusting member (1222) is fixed relative to the boom (121).

3. The hoisting device according to claim 2, characterized in that, The adjusting component (1222) is slidably connected to the boom (121).

4. The hoisting device according to claim 3, characterized in that, The adjusting member (1222) has a sliding hole (1223), and the adjusting member (1222) is sleeved on the outer peripheral wall of the rod (121) through the sliding hole (1223).

5. The hoisting device according to claim 4, characterized in that, The inner wall of the sliding hole (1223) has one of a roller and a guide rail, and the outer wall of the lifting rod (121) has the other of the roller and the guide rail, wherein the roller matches the guide rail; or, The inner wall surface of the sliding hole (1223) has one of a slider and a sliding groove, and the outer wall surface of the rod (121) has the other of the slider and the sliding groove, wherein the slider matches the sliding groove.

6. The hoisting device according to claim 2, characterized in that, The locking element is a locking bolt. The adjusting element (1222) has a threaded through hole extending radially along the lifting rod (121). The lifting rod (121) has a limiting groove. The threaded through hole and the limiting groove are opposite to each other. The locking bolt is threadedly connected to the threaded through hole so that the locking bolt abuts against the limiting groove, thereby limiting the movement of the adjusting element (1222) along the axial direction of the lifting rod (121); or, The locking component includes a first magnetic component and a second magnetic component. The first magnetic component is disposed on the adjusting component (1222), and the second magnetic component is disposed on the lifting rod (121). The first magnetic component and the second magnetic component are magnetically connected.

7. The hoisting device according to any one of claims 3-6, characterized in that, The hoisting device (100) further includes a distance detection element, which is disposed on at least one of the two hoisting units (122). The distance detection element is configured to detect the position of each hoisting unit (122) on the boom (121) and the distance between the two hoisting units (122); and / or, The hoisting device (100) further includes a controller and a drive unit configured to drive the adjusting member (1222) to slide relative to the boom (121), the drive unit being electrically connected to the controller.

8. The hoisting device according to claim 2, characterized in that, A first break ring (130) and a first fastener are provided between the flexible strip (110) and the adjusting member (1222). Both ends of the flexible strip (110) and the end of the adjusting member (1222) near the flexible strip (110) each have a first through hole. When the first break ring (130) passes through the first through hole at the corresponding end of the adjusting member (1222) and the flexible strip (110), the first fastener closes the opening of the first break ring (130); and / or, A second break ring (140) and a second fastener are provided between the adjusting member (1222) and the lifting member (1221). Both the adjusting member (1222) and the lifting member (1221) have a second through hole at their adjacent ends. When the second break ring (140) passes through the second through hole of the adjusting member (1222) and the corresponding lifting member (1221), the second fastener closes the opening of the second break ring (140); and / or, The lifting component (1221) has a third break ring (150) and a third fastener at the end away from the adjusting component (1222), and has a third through hole. When the third break ring (150) passes through the third through hole, the third fastener closes the opening of the third break ring (150).

9. The hoisting device according to claim 8, characterized in that, When the end of the hoisting component (1221) away from the adjusting component (1222) has a third break ring (150) and a third fastener, and has a third through hole, the third break ring (150) has a through hole and a threaded connector, the hoisting connection structure is a threaded hole, and the threaded connector passes through the through hole and is threadedly connected to the threaded hole.

10. A lifting and hoisting system, characterized in that, Includes a crane and a hoisting device (100) as described in any one of claims 1-9 above.

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