Hoisting balance beam capable of adjusting sling length

Abstract

The utility model discloses a hoisting balance beam capable of adjusting the length of a sling. The hoisting balance beam comprises a main beam structure and a sling adjusting device, the main beam structure has a set length; a first base is arranged on the main beam structure, and the sling adjusting device is arranged on the first base; the sling adjusting device is used for adjusting the length of the connected sling; the main beam structure comprises a first surface part and a second surface part; a first lifting lug device is arranged at a set position of the first surface part; a second lifting lug device is arranged at a set position of the second face part; the first lifting lug device and the second lifting lug device are used for sling connection. According to the hoisting balance beam, under the condition that an auxiliary crane is not used, stable lightering of blades can be completed only through one main crane, the construction flexibility is improved, and the offshore operation difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting balance beam technology, specifically relating to a hoisting balance beam with adjustable sling length. Background Technology

[0002] When offshore wind turbine blades are installed at sea, they need to be transferred from a transport vessel to the deck of a platform vessel. This transfer typically requires two cranes—a main crane and an auxiliary crane—to lift the blades together. This method demands a high degree of coordination between the two cranes to properly install the blades. However, at sea, wind and waves can easily cause the vessel or platform to sway, reducing the coordination of the two cranes and making it difficult or impossible to adjust the level of the lifted blades accurately. This is detrimental to controlling the blade's level. The two-crane lifting method relies on the presence of an auxiliary crane; if the vessel or platform is not equipped with an auxiliary crane, the blade transfer operation cannot be completed. Furthermore, as the capacity of offshore wind turbines continues to increase, the length of the blades also increases. This longer blade length necessitates a greater spacing between the lifting points required for installation. This increased spacing places new demands on the lifting span of dual-turbine tandem hoisting. Under large lifting spans, dual-turbine hoisting requires more precise crane operation, increasing the difficulty of installation. Moreover, complex sea conditions make it harder for both turbines to maintain consistent stability, which is detrimental to the smooth installation of the blades. In traditional hoisting methods, the slings on the hoisting balance beam are typically of fixed length, preventing the balance beam from flexibly adjusting the sling length and making it difficult to adjust the blade's levelness during installation.

[0003] Currently, there is a lack of a universal adjustable sling length lifting balance beam to facilitate the transfer of blades by the crane.

[0004] Therefore, a new technology is needed to solve the problem of lifting balance beams with adjustable sling lengths in existing technologies. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides a lifting balance beam with adjustable sling length, which facilitates the transfer of blades by the crane.

[0006] The present invention adopts the following technical solution:

[0007] An adjustable sling length lifting balance beam includes a main beam structure and a sling adjustment device; the main beam structure has a set length; a first base is provided on the main beam structure, and the sling adjustment device is disposed on the first base; the sling adjustment device is used to adjust the length of the connected sling; the main beam structure includes a first facet and a second facet; a first lifting lug is provided at a set position on the first facet; a second lifting lug is provided at a set position on the second facet; the first lifting lug and the second lifting lug are used for sling connection.

[0008] Furthermore, the first base is a first connecting beam; a plurality of the first connecting beams are arranged on the main beam structure at a set interval for mounting the sling adjustment device.

[0009] Furthermore, the first connecting beam is an I-beam, comprising an upper flange plate, a web plate, and a lower flange plate. The upper flange plate of the first connecting beam is connected to the lower flange plate of the first connecting beam through the web plate. A plurality of first partitions are provided between the upper flange plate and the lower flange plate of the first connecting beam. Mounting holes are provided on the upper flange plate of the first connecting beam, and the mounting holes are positioned away from the first partitions and the web plate of the first connecting beam. The mounting holes are used for connecting and fixing the sling adjustment device.

[0010] Furthermore, the main beam structure is a truss beam;

[0011] The first end of the truss beam has several first lifting lugs on its first surface; the second end of the truss beam has several first lifting lugs on its first surface.

[0012] The second face of the first end of the truss beam is provided with several second lifting lug devices; the second face of the second end of the truss beam is provided with several second lifting lug devices.

[0013] Furthermore, the facade truss grid between the first lifting lug device and the second lifting lug device is provided with first-direction diagonal bracing and second-direction diagonal bracing.

[0014] Furthermore, the hoisting balance beam also includes a first alignment reinforcing rib, which is disposed on the main beam structure and is positioned corresponding to the first direction diagonal support or the second direction diagonal support.

[0015] Furthermore, the first lifting lug device includes a lifting lug plate and a lug plate reinforcing rib; the lug plate reinforcing rib is disposed on the side of the lifting lug plate for connection and reinforcement; the lifting lug plate and the lug plate reinforcing rib are disposed at a predetermined position on the main beam structure.

[0016] Furthermore, the hoisting balance beam also includes a second alignment reinforcing rib, which is disposed on the main beam structure and is positioned corresponding to the ear plate reinforcing rib.

[0017] Furthermore, the hoisting balance beam also includes a slide rail type lifting lug device, which is adjustablely positioned on the main beam structure; the slide rail type lifting lug device is used for sling connection.

[0018] Furthermore, the sling adjustment device is a winch.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] An adjustable sling length lifting balance beam has a first base on its main beam structure, on which a sling adjustment device is arranged to adjust the length of the connected sling. Simultaneously, several first lifting lugs are provided on the first face of the main beam structure, allowing the main crane to connect with the slings via the first lifting lugs. Furthermore, several second lifting lugs are provided on the second face of the main beam structure, located below the first face. These second lifting lugs are used to connect slings for lifting blades. The slings connected below, combined with the sling adjustment device, allow for sling length adjustment. This enables adjustment to ensure the levelness of the lifted blade during lifting, ensuring the height difference between the root and tail of the lifted blade meets requirements.

[0021] The lifting balance beam of this utility model can smoothly transfer the blades using only one main crane without the need for an auxiliary crane, which improves the flexibility of construction and reduces the difficulty of offshore operations. Attached Figure Description

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a left view of the utility model "a hoisting balance beam with adjustable sling length";

[0024] Figure 2 This is a partial schematic diagram showing the connection between the first main beam and one end of the transverse connecting beam.

[0025] Figure 3 This is a top view of the upper frame (showing only a portion of the inclined beams) (indicating the location of the first lifting lug device);

[0026] Figure 4 This is a top view of the lower frame (showing only a portion of the inclined beams) (indicating the location of the first connecting beam and the location of the second lifting lug device);

[0027] Figure 5 This is a schematic diagram of the second side facade frame (the first partial schematic diagram) (showing the arrangement relationship of the first direction diagonal brace, the second direction diagonal brace, the first lifting lug device, the second lifting lug device, the first alignment reinforcing rib and the second alignment reinforcing rib);

[0028] Figure 6 This is a schematic diagram of the second side facade frame (the second partial schematic diagram);

[0029] Figure 7 This is a schematic diagram showing the alignment of the first alignment reinforcing rib, the second alignment reinforcing rib, and the alignment partition.

[0030] Figure 8 yes Figure 7 Left view of the alignment of the second alignment reinforcing rib and the ear plate reinforcing rib;

[0031] Figure 9 This is a schematic diagram of the first connecting beam arranged in the lower frame (where the part of the transverse connecting beam showing a local position needs to be cut off);

[0032] Figure 10 This is a schematic diagram showing the arrangement of the first connecting beam in the lower frame;

[0033] Figure 11 yes Figure 10 A cross-sectional view at QQ;

[0034] Figure 12 yes Figure 10 Cross-sectional view at UU;

[0035] Figure 13 yes Figure 9 Sectional view at XX;

[0036] Figure 14 This is a simplified schematic diagram of a crane hook lifting blades through the lifting balance beam of this utility model (wherein, the winch is simplified to show its position).

[0037] Figure label:

[0038] 1-Main beam structure;

[0039] L - Length direction; A - First end direction; B - Second end direction; R - Section line; QQ - Sectional view symbol; UU - Sectional view symbol; XX - Sectional view symbol;

[0040] 11-First face; 12-Second face;

[0041] 21-First main girder; 22-Second main girder; 23-Third main girder; 24-Fourth main girder;

[0042] 25 - Upper frame; 26 - Second side facade frame; 261 - Facade truss grid; 27 - Lower frame;

[0043] 31-First connecting beam; 32-Transverse connecting beam; 33-Diagonal beam; 34-Vertical support; 35-Diagonal support; 351-Diagonal support in the first direction; 352-Diagonal support in the second direction;

[0044] 41-First diaphragm; 42-Main beam diaphragm; 43-Alignment support diaphragm; 44-Alignment diaphragm; 45-First alignment reinforcing rib; 46-Second alignment reinforcing rib;

[0045] W - Spacing; 47 - Mounting hole; 48 - Welding hole; 49 - Bevel;

[0046] C - Upper flange; D - Web; E - Lower flange; K - Flange;

[0047] 51-First lifting lug device; 52-Second lifting lug device;

[0048] P - Lifting lug plate; N - Lug plate reinforcing rib;

[0049] 61 - Location of the first node of the first main beam; 62 - Location of the second node of the first main beam; 63 - Location of the third node of the first main beam;

[0050] 71 - Location of the first node of the second main beam; 72 - Location of the second node of the second main beam; 73 - Location of the third node of the second main beam;

[0051] 81 - End node position;

[0052] 91-Winder; 92-Sling; 93-Blade; 931-Root; 932-Tail; 94-Hook. Detailed Implementation

[0053] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0054] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0055] Reference Figures 1 to 14 A hoisting balance beam with adjustable sling length includes a main beam structure 1 and a sling adjustment device; the main beam structure 1 has a set length (refer to...). Figure 3 (Understanding the length direction L), it can flexibly adapt to the length setting of the blade 93; the main beam structure 1 is provided with a first base, and the sling adjustment device is provided on the first base; the sling adjustment device is used to adjust the length of the connected sling; the main beam structure 1 includes a first face 11 and a second face 12, the second face 12 being located below the first face 11; a first lifting lug device 51 is provided at a set position of the first face 11; a second lifting lug device 52 is provided at a set position of the second face 12; the first lifting lug device 51 and the second lifting lug device 52 are used for sling connection.

[0056] Reference Figure 9 , Figure 10 , Figure 12 and Figure 13 In one embodiment, the first base is a first connecting beam 31; a plurality of first connecting beams 31 are arranged on the main beam structure 1 at a set interval W for mounting the sling adjustment device. In this embodiment, it is preferable to use two first connecting beams 31 for mounting and fixing the sling adjustment device.

[0057] Reference Figure 9 , Figure 10 , Figure 12 and Figure 13 In one embodiment, the first connecting beam 31 is an I-beam, comprising an upper flange plate C, a web plate D, and a lower flange plate E. The upper flange plate C of the first connecting beam 31 is connected to the lower flange plate E of the first connecting beam 31 via the web plate D. A plurality of first partition plates 41 are provided between the upper flange plate C and the lower flange plate E of the first connecting beam 31. Mounting holes 47 are provided on the upper flange plate C of the first connecting beam 31, and these mounting holes 47 are positioned away from the positions of the first partition plates 41 and the web plate D of the first connecting beam 31. The mounting holes 47 are used for connecting and fixing the sling adjustment device. The first partition plates 41 can effectively improve the bending and torsional resistance of the first connecting beam 31.

[0058] In one embodiment, the thickness of the upper flange plate C of the first connecting beam 31 is greater than or equal to the thickness of its lower flange plate E; in this embodiment, the thickness of the upper flange plate C of the first connecting beam 31 is greater than the thickness of its lower flange plate E.

[0059] Reference Figures 1 to 14 In one embodiment, the main beam structure 1 is a truss beam;

[0060] The first end of the truss beam (combined with) Figure 3 The first face 11 (understood from the first end direction A) is provided with several first lifting lug devices 51; the second end of the truss beam (in conjunction with Figure 3 (understood from the second end direction B) Several first lifting lug devices 51 are provided on the first face 11;

[0061] The first end of the truss beam (combined with) Figure 4 The second face 12 (understood from the first end direction A) is provided with several second lifting lug devices 52; the second end of the truss beam (in conjunction with Figure 4 The second face 12 (understood in the direction of B at the second end) is provided with several second lifting lugs 52.

[0062] Reference Figure 5 and Figure 6 In one embodiment, the facade truss grid 261 between the first lifting lug device 51 and the second lifting lug device 52 is provided with a first directional diagonal support 351 and a second directional diagonal support 352.

[0063] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In one embodiment, the truss beam includes a first main beam 21, a second main beam 22, a third main beam 23, and a fourth main beam 24. The first main beam 21, the second main beam 22, the third main beam 23, and the fourth main beam 24 are located at the four corners of the "U"-shaped facade. The first main beam 21 is connected to the second main beam 22 via a transverse connecting beam 32 and a diagonal beam 33 to form an upper frame 25. The second main beam 22 is connected to the third main beam 23 via a vertical support 34 and a diagonal support 35 (including a first-direction diagonal support 351 and a second-direction diagonal support 352) to form a first side facade frame. The third main beam 23 is connected to the fourth main beam 24 via a transverse connecting beam 32 and a diagonal beam 33 to form a lower frame 27. The fourth main beam 24 is connected to the first main beam 21 via a vertical support 34 and a diagonal support 35 (including a first-direction diagonal support 351 and a second-direction diagonal support 352) to form a second side facade frame 26.

[0064] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7Preferably, the first main beam 21, the second main beam 22, the third main beam 23, and the fourth main beam 24 are all (large cross-section) I-beams; the transverse connecting beam 32 is a (small cross-section) I-beam; for the upper frame 25, the upper flange plate C at one end of the transverse connecting beam 32 is connected to the upper flange plate C of the first main beam 21, and the "web plate D and lower flange plate E" at one end of the transverse connecting beam 32 are connected to the web plate D of the first main beam 21, and an alignment partition plate 44 is provided below the lower flange plate E of the transverse connecting beam 32, the alignment partition plate 44 corresponding to the web plate of the transverse connecting beam 32. The plate D is positioned such that the aligning partition 44 is directly below the web plate D of the transverse connecting beam 32. For the upper frame 25, the upper flange plate C at the other end of the transverse connecting beam 32 is connected to the upper flange plate of the second main beam 22. The web plate D and lower flange plate E at the other end of the transverse connecting beam 32 are connected to the web plate of the second main beam 22. An aligning partition 44 is provided below the lower flange plate E of the transverse connecting beam 32, and this aligning partition 44 is positioned corresponding to the web plate D of the transverse connecting beam 32 (i.e., the aligning partition 44 is directly below the web plate D of the transverse connecting beam 32). Similarly, the transverse connecting beams of the lower frame 27 are connected with reference to the transverse connecting beams of the upper frame 25, which will not be described in detail here.

[0065] Reference Figure 1 and Figure 2 Preferably, the web D of the transverse connecting beam 32 is provided with a weld hole 48, which can effectively prevent multiple welds from overlapping at the intersection and help ensure the weld quality at the connection. Preferably, other structural components of this utility model may also have weld holes according to actual conditions, which will not be described in detail here.

[0066] Reference Figure 1 Preferably, the first main beam 21, the second main beam 22, the third main beam 23 and the fourth main beam 24 are each provided with a main beam partition 42.

[0067] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 Preferably, the first main beam 21, the second main beam 22, the third main beam 23 and the fourth main beam 24 are all I-beams. The first face 11 refers to the upper surface of the upper flange plate C of the first main beam 21 and the upper surface of the upper flange plate of the second main beam 22; the second face 12 refers to the lower surface of the lower flange plate of the third main beam 23 and the lower surface of the lower flange plate of the fourth main beam 24.

[0068] Reference Figure 5 , Figure 6 and Figure 7In one embodiment, the hoisting balance beam further includes a first alignment reinforcing rib 45, which is disposed on the main beam structure 1 and is disposed at the position corresponding to the first directional diagonal support 351 or the second directional diagonal support 352. The alignment arrangement of the first alignment reinforcing rib 45 can effectively avoid local buckling failure of the structure.

[0069] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In one embodiment, the first lifting lug device 51 includes a lifting lug plate P and a lug plate reinforcing rib N; the lug plate reinforcing rib N is disposed on the side of the lifting lug plate P for connection and reinforcement; the lifting lug plate P and the lug plate reinforcing rib N are disposed at a predetermined position on the main beam structure 1. The second lifting lug device 52 has the same structural composition as the first lifting lug device 51.

[0070] Reference Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In one embodiment, the hoisting balance beam further includes a second alignment reinforcing rib 46, which is disposed on the main beam structure 1 and is disposed at the position corresponding to the ear plate reinforcing rib N. The alignment arrangement of the second alignment reinforcing rib 46 can effectively avoid local buckling failure of the structure.

[0071] Reference Figures 1 to 8Preferably, the first main beam 21, the second main beam 22, the third main beam 23, and the fourth main beam 24 are all I-beams; the first directional diagonal support 351 and the second directional diagonal support 352 are both I-beams; for example, the first lifting lug device 51 is arranged on the upper flange plate C of the first main beam 21 (i.e., the lifting lug plate P and the lug plate reinforcing rib N are arranged on the upper flange plate C of the first main beam 21), and the second alignment reinforcing rib 46 is arranged in the first main beam 21 in the configuration of "main beam partition plate 42", and the second alignment reinforcing rib 46 is positioned opposite the lug plate reinforcing rib N; one end of the first directional diagonal support 351 is connected to the first The lower flange plate E of the main beam 21 is connected, and the first alignment reinforcing rib 45 is also set in the first main beam 21 in the setting mode of "main beam partition 42", and the first alignment reinforcing rib 45 is set at the position of the flange plate K of the first directional diagonal support 351; the web plate D of the first directional diagonal support 351 is set at the position of the web plate D of the first main beam 21 (that is, the web plate D of the first directional diagonal support 351 is directly below the position of the web plate D of the first main beam 21); the alignment arrangement of the second directional diagonal support 352 and the first alignment reinforcing rib 45 of this utility model is arranged with reference to the "alignment arrangement mode of the first directional diagonal support 351 and the first alignment reinforcing rib 45", which will not be described again here.

[0072] Reference Figure 3 and Figure 4 Preferably, the inclined beam 33 is also an I-beam.

[0073] Reference Figure 5 and Figure 6 Preferably, the first directional diagonal support 351 and the second directional diagonal support 352 constitute an "X"-shaped support for the facade. Preferably, at the node position where the first lifting lug device 51 and the second lifting lug device 52 are arranged, the facade and the adjacent facade truss grid 261 are all provided with the facade "X"-shaped support, and the remaining facade truss grids 261 may only be provided with "the first directional diagonal support 351 or the second directional diagonal support 352".

[0074] Reference Figure 5 and Figure 6 Preferably, (in the same facade truss grid 261) if the first directional diagonal support 351 is a continuous diagonal support, the second directional diagonal support 352 needs to be disconnected from the first directional diagonal support 351 and then reconnected to the first directional diagonal support 351. An alignment support partition 43 is set in the first directional diagonal support 351 to provide alignment support for the flange plate K of the second directional diagonal support 352, so as to facilitate the force transmission of the second directional diagonal support 352 and effectively avoid local buckling failure of the structure.

[0075] (In the same facade truss grid 261) If the second directional diagonal support 352 is a continuous diagonal support, the first directional diagonal support 351 needs to be disconnected from the second directional diagonal support 352 and then connected to the second directional diagonal support 352. An alignment support partition 43 is set in the second directional diagonal support 352 to align the flange plate K of the first directional diagonal support 351, so as to facilitate the force transmission of the first directional diagonal support 351 and effectively avoid local buckling failure of the structure.

[0076] Reference Figure 1 , Figure 5 and Figure 6 Preferably, the vertical support 34 is also an I-beam, and the web D of the vertical support 34 is aligned with the web D of the target main beam (such as the first main beam 21). Preferably, the lug plate P is aligned with the web D of the target main beam (such as the first main beam 21) to better realize the force transmission of the structure.

[0077] Reference Figure 9 , Figure 10 and Figure 11 In one embodiment, for the lower frame 27, a first connecting beam 31 is provided on each of the left and right sides of the transverse connecting beam 32, and most of the structure of the transverse connecting beam 32 between the two first connecting beams 31 needs to be removed; preferably, only the transverse connecting beam portion above the alignment partition 44 in the target main beam is retained in the transverse connecting beam 32 between the two first connecting beams 31 (refer to...). Figure 11 The remaining portion needs to be cut off. After the two first connecting beams 31 are positioned, the sling adjustment device is installed on them. The installed sling adjustment device is located adjacent to the second lifting lug device 52. During hoisting, the sling adjustment device and the adjacent second lifting lug device 52 serve to provide a connection point for hoisting. Among them, the first connecting beam 31 is a stronger component than the transverse connecting beam 32.

[0078] Reference Figure 10 and Figure 12 Preferably, the thickness of the upper flange plate C of the first connecting beam 31 is greater than or equal to the thickness of the upper flange plate C of the target main beam (such as the fourth main beam 24); the thickness of the lower flange plate E of the first connecting beam 31 is greater than or equal to the thickness of the lower flange plate E of the target main beam (such as the fourth main beam 24).

[0079] Reference Figure 10 and Figure 12 Preferably, the upper flange plate C of the first connecting beam 31 is beveled 49 and welded to the upper flange plate C of the target main beam (such as the fourth main beam 24).

[0080] The web D of the first connecting beam 31 is connected to the web D of the target main beam (such as the fourth main beam 24), and a main beam partition 42 is added in the target main beam. The added main beam partition 42 is set at the position corresponding to the web D of the first connecting beam 31.

[0081] The lower flange plate E of the first connecting beam 31 is beveled 49 and welded to the lower flange plate E of the target main beam (such as the fourth main beam 24).

[0082] Preferably, the I-beam mentioned in this utility model is an H-beam or an I-section steel.

[0083] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In one embodiment, the first end of the truss beam (combined with...) Figure 3 The first face 11 (understood from the first end direction A) is provided with four first lifting lug devices 51; the first first lifting lug device 51 is arranged on the upper flange plate at the first node position 61 of the first main beam, the second first lifting lug device 51 is arranged parallel to the upper flange plate at the first node position 71 of the second main beam, the third first lifting lug device 51 is arranged on the upper flange plate at the second node position 62 of the first main beam, and the fourth first lifting lug device 51 is arranged parallel to the upper flange plate at the second node position 72 of the second main beam. Preferably, the first node position 61 of the first main beam is not the end node position 81 of the first main beam, and the first node position 71 of the second main beam is not the end node position 81 of the second main beam. This arrangement is beneficial to improving the load-bearing effect of the main beam structure 1 during hoisting. Similarly, the second lifting lug devices 52 of the second face 12 at the first end are arranged in a similar pattern on the lower flange plate of the third main beam 23 and the lower flange plate of the fourth main beam 24, which will not be described in detail here.

[0084] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In one embodiment, the second end of the truss beam (combined with) Figure 3The first face 11 (understood from the second end direction B) is provided with two first lifting lug devices 51; the first first lifting lug device 51 is arranged on the upper flange plate at the third node position 63 of the first main beam, and the second first lifting lug device 51 is arranged parallel to it on the upper flange plate at the third node position 73 of the second main beam. Preferably, the third node position 63 of the first main beam is not the end node position 81 of the first main beam, and the third node position 73 of the second main beam is not the end node position 81 of the second main beam. This arrangement is beneficial to improving the load-bearing effect during the hoisting process of the main beam structure. Similarly, the second lifting lug devices 52 of the second face 12 at the second end are arranged in a similar pattern on the lower flange plate of the third main beam 23 and the lower flange plate of the fourth main beam 24, which will not be described in detail here.

[0085] In one embodiment, the first lifting lug device 51 and the second lifting lug device 52 arranged in this utility model have a reasonable structural composition and reasonable arrangement position, and the arrangement position has a good "force-transmission" system (such as the "force-transmission" system formed by the first alignment reinforcing rib 45, the second alignment reinforcing rib 46, the first directional diagonal support 351 and the second directional diagonal support 352), which can improve the safety of the main beam structure.

[0086] In one embodiment, the hoisting balance beam further includes a sliding rail type lifting lug device (see prior art). The sliding rail type lifting lug device is adjustablely positioned on the main beam structure 1 (for example, the sliding rail type lifting lug device is adjustablely positioned on the third main beam 23, or the sliding rail type lifting lug device is adjustablely positioned on the fourth main beam 24). The sliding rail type lifting lug device is used for sling connection. The sliding rail type lifting lug device can flexibly change the position of the lifting point along the length direction L of the main beam structure 1, which can improve the flexibility during the hoisting process.

[0087] In one embodiment, the sling adjustment device is a winch.

[0088] Reference Figure 14 In one embodiment, slings are used for hoisting during the lifting process. During hoisting, the main beam structure 1 has four lifting points on the upper and lower parts, for a total of eight lifting points. Each lifting point is equipped with an 80MT shackle (where MT stands for "MetricTon", indicating that the rated working load of the shackle is 80 metric tons). The four lifting points on the upper part (all provided by the lifting lug plate P of the first lifting lug device 51) are connected to the hook 94 of the main crane using the equipped "four shackles and two slings". The four lifting points on the lower part (preferably, three lifting points are provided by the lifting lug plate of the second lifting lug device 52 and one lifting point is provided by the winch 91) are connected to the blade root 931 and blade tail 932 respectively using the equipped "four shackles and two slings".

[0089] For example, one end of a sling 92 is connected to a first lifting lug device 51 via a shackle, and the other end is connected to another first lifting lug device arranged in parallel via a shackle. Then the sling 92 is hooked onto the hook 94 of the main crane, thus completing the connection of a sling (the sling 92 at the other end of the upper part of the main beam structure is connected in the same way, which will not be described in detail here).

[0090] For example, one end of a sling 92 is connected to a second lifting lug device 52 via a shackle, and the other end goes around the root 931 of the blade and catches the root 931 of the blade. Then it is connected to another parallel second lifting lug device via a shackle, thus completing the connection of another sling 92.

[0091] For example, one end of a sling 92 is connected to a winch 91 via a shackle. Figure 14 (Simplified diagram of the winch) The other end goes around the tail of the blade 932 and catches the tail of the blade 932. Then it is connected to the second lifting lug device 52 through a shackle, thus completing the connection of another sling. The winch can adjust the length of the connected sling 92, which helps to ensure that the height difference between the root of the blade 931 and the tail of the blade 932 meets the transfer requirements, so as to adjust the level of the blade 93.

[0092] The first connecting beam 31 designed in this utility model can not only meet the setting requirements of the winch, but also ensure the connection safety after the main beam structure has removed a part of the transverse connecting beam.

[0093] In this embodiment, the present invention only sets up a winch at one end (such as the first end) of the main beam structure 1.

[0094] In another embodiment, a winch can be installed at each of the left and right ends (such as the first end and the second end) of the main beam structure, and the length of the slings attached during the hoisting process can be adjusted at each end by means of the winch.

[0095] Other aspects of the adjustable sling length hoisting balance beam described in this utility model are found in the prior art and will not be repeated here.

[0096] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A lifting balance beam with adjustable sling length, characterized in that, The device includes a main beam structure and a sling adjustment device; the main beam structure has a set length; a first base is provided on the main beam structure, and the sling adjustment device is disposed on the first base; the sling adjustment device is used to adjust the length of the connected sling; the main beam structure includes a first face and a second face; a first lifting lug device is provided at a set position on the first face; a second lifting lug device is provided at a set position on the second face; the first lifting lug device and the second lifting lug device are used for sling connection.

2. The lifting balance beam with adjustable sling length according to claim 1, characterized in that, The first base is a first connecting beam; several first connecting beams are set at a set interval on the main beam structure for the purpose of accommodating the sling adjustment device.

3. A hoisting balance beam with adjustable sling length according to claim 2, characterized in that, The first connecting beam is an I-beam, comprising an upper flange plate, a web plate, and a lower flange plate. The upper flange plate of the first connecting beam is connected to the lower flange plate of the first connecting beam through the web plate. Several first partition plates are provided between the upper flange plate and the lower flange plate of the first connecting beam. Mounting holes are provided on the upper flange plate of the first connecting beam, and the mounting holes are positioned away from the first partition plates and the web plate of the first connecting beam. The mounting holes are used for connecting and fixing the sling adjustment device.

4. A hoisting balance beam with adjustable sling length according to claim 1, characterized in that, The main beam structure is a truss beam; The first end of the truss beam has several first lifting lugs on its first surface; the second end of the truss beam has several first lifting lugs on its first surface. The second face of the first end of the truss beam is provided with several second lifting lug devices; the second face of the second end of the truss beam is provided with several second lifting lug devices.

5. A hoisting balance beam with adjustable sling length according to claim 4, characterized in that, The facade truss grid between the first lifting lug device and the second lifting lug device is provided with first-direction diagonal bracing and second-direction diagonal bracing.

6. A hoisting balance beam with adjustable sling length according to claim 5, characterized in that, The hoisting balance beam also includes a first alignment reinforcing rib, which is disposed on the main beam structure and is disposed at the position corresponding to the first direction diagonal support or the second direction diagonal support.

7. A hoisting balance beam with adjustable sling length according to claim 1, characterized in that, The first lifting lug device includes a lifting lug plate and a lug plate reinforcing rib; the lug plate reinforcing rib is disposed on the side of the lifting lug plate for connection and reinforcement; the lifting lug plate and the lug plate reinforcing rib are disposed at a predetermined position on the main beam structure.

8. A hoisting balance beam with adjustable sling length according to claim 7, characterized in that, The hoisting balance beam also includes a second alignment reinforcing rib, which is disposed on the main beam structure and is positioned corresponding to the ear plate reinforcing rib.

9. A hoisting balance beam with adjustable sling length according to claim 1, characterized in that, The hoisting balance beam also includes a sliding rail type lifting lug device, which is adjustablely positioned on the main beam structure; the sliding rail type lifting lug device is used for sling connection.

10. A hoisting balance beam with adjustable sling length according to any one of claims 1 to 9, characterized in that, The sling adjustment device is a winch.

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