A wind power blade girder prefabricated part hoisting device

Abstract

The utility model discloses a kind of wind power blade type girder prefabricated member hoisting equipment, including portal hoisting equipment and cushion, wherein, the upper surface of the supporting plate in cushion is pasted with liquid capsule, the upper end of liquid capsule is integrally formed with the buffer pad plate matched with girder surface shape, the center position of the front and back side surface of buffer pad plate is connected with the bottom supporting telescopic pipe in liquid capsule, the bottom supporting telescopic pipe is composed of S-shaped hard pipe and linear telescopic pipe attached to the lower surface of girder, and there is reinforcing rib in linear telescopic pipe;One of steel wire rope is equipped with telescopic pressure pipe by bolt, and telescopic pressure pipe is same in structure with the bottom supporting telescopic pipe, can be adjusted by safe liquid circulation, and is communicated with liquid capsule by pipeline;Through buffer pad plate, liquid capsule and telescopic pressure pipe, the bottom supporting telescopic pipe adjusted by safe liquid, can form multiple-point support and pressure self-adaptive adjustment, effectively disperse girder stress, avoid bending moment too large, reduce stress concentration site load, prevent crack generation.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment manufacturing technology, specifically a hoisting device for prefabricated wind turbine blade beams. Background Technology

[0002] Driven by the global energy transition and the "dual carbon" goal, the wind power industry has achieved leapfrog development. The capacity of single wind turbines continues to upgrade to 10MW and above, and the blade length has exceeded 120 meters. As a result, the prefabricated blade spars, which are the core load-bearing structure of the blades, are developing towards ultra-long and ultra-heavy directions, with a single prefabricated section weighing more than 50 tons and exceeding 30 meters in length. During the factory production process, these prefabricated components need to undergo multiple processes such as mold casting, curing and molding, and surface finishing. The transfer and positioning between each stage puts stringent requirements on the hoisting operation. Since the structural stability of the prefabricated components is relatively weak in the early stage of curing, millimeter-level precision attitude control is required during hoisting to avoid structural deformation due to uneven stress. At the same time, in the scenario where multiple pieces of equipment work together in the workshop, the hoisting equipment needs to have flexible turning and spatial adaptability to adapt to the compact production layout.

[0003] However, most conventional wind turbine blade precast component hoisting equipment currently uses fixed lifting points for transport. While this method is simple in structure and convenient in operation, the spacing between the fixed lifting points is usually large. During the hoisting process, the blade may generate excessive bending moments due to its own weight and uneven stress during hoisting. More importantly, the transition area between the blade root and the blade tip is a special part of the blade structure, where the airfoil curvature has a significant abrupt change. This area is inherently a weak point with stress concentration. When excessive bending moments are applied to this area, the stress load in this area will be further aggravated, exceeding the material's bearing capacity and ultimately leading to cracks.

[0004] To address these issues, this invention provides a hoisting device for prefabricated wind turbine blade beams. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a hoisting device for prefabricated wind turbine blade beams, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hoisting device for prefabricated wind turbine blade beams, comprising: Gantry cranes are installed at designated locations for hoisting precast wind turbine blade beam components. The padding is attached to the lugs on the lower surface of the beam, and the padding hangs down naturally under its own weight. The pad includes a support plate, and steel wire ropes are rigidly connected to the upper surface of the support plate near the left and right sides. A telescopic pressure tube is installed on one of the steel wire ropes with bolts. A liquid bladder is attached to the upper surface of the support plate in a shape-matched manner. A buffer pad that matches the surface shape of the wind turbine blade precast component is integrally formed at the upper end of the liquid bladder. A bottom telescopic tube is installed at the center of the front and rear sides of the buffer pad, which is connected to the inside of the liquid bladder.

[0007] Preferably, the pallet is an arc-shaped rigid plate, and the protrusion or concavity of the arc matches the surface shape of the beam being hoisted.

[0008] Preferably, the end of the wire rope has a hook for connecting to the hanging lug of the suspension beam.

[0009] Preferably, the telescopic pressure tube is a straight telescopic tube extending towards the support plate, and has a safe liquid circulation interface at the upper end.

[0010] Preferably, the side of the liquid bladder has a groove that fits into the inner part of the steel wire rope, the liquid bladder is a linearly telescopic bladder structure, and it stores any suitable safety liquid inside.

[0011] Preferably, the bottom support telescopic tube consists of an S-shaped rigid tube and a straight telescopic tube attached to the lower surface of the wind turbine blade precast component. The straight telescopic tube has reinforcing ribs inside to assist in straight extension, and the telescopic pressure tube has the same structure as the bottom support telescopic tube.

[0012] Preferably, the front side of the buffer pad is provided with an interface communicating with the inside of the liquid bladder on one side of the bottom telescopic tube, and the interface of the connecting pipe is connected to the upper end of the telescopic pressure tube. Beneficial effects

[0013] This utility model provides a hoisting device for prefabricated wind turbine blade beams. Compared with the prior art, it has the following advantages: This wind turbine blade precast component hoisting equipment, by incorporating buffer pads and liquid bladders that match the surface shape of the wind turbine blade precast component, as well as telescopic pressure pipes and bottom telescopic pipes that can be adjusted through safe liquid circulation, enables multi-point support and pressure positioning during hoisting. This effectively disperses the stress on the blade and avoids excessive bending moment caused by large spacing between fixed hoisting points. In particular, it reduces the load on stress concentration areas such as the blade root and blade tip transition zone, preventing crack formation. At the same time, the arc-shaped support plate matches the surface of the blade, further improving the uniformity of stress distribution. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the lifting beam and pad of this utility model; Figure 3 This is a schematic diagram of the tray and its connection according to this utility model; Figure 4 This is a schematic diagram of the buffer pad and liquid bladder of this utility model.

[0015] In the diagram: 1. Gantry hoisting equipment; 2. Lifting beam; 3. Pad; 31. Support plate; 311. Wire rope; 312. Telescopic pressure pipe; 32. Buffer pad; 321. Bottom support telescopic pipe; 33. Liquid bladder. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 A hoisting device for prefabricated wind turbine blade beams, comprising: The gantry hoisting equipment 1 mainly includes a gantry structure, a hoisting trolley, a lifting beam 2 lifted by the hoisting trolley, a running mechanism and an electrical control system, and is assembled at the designated position for hoisting the precast wind turbine blade beam through the gantry structure; The pad 3 is attached to the hanging lugs on the lower surface of the beam 2, and the pad 3 hangs down naturally under its own weight. The support 3 includes a support plate 31, which is an arc-shaped rigid plate. The arc of the support plate 31 matches the surface shape of the beam being hoisted. Steel wire ropes 311 are rigidly connected to the upper surface of the support plate 31 near the left and right sides. The ends of the steel wire ropes 311 have hooks for connecting to the lugs of the lifting beam 2. A telescopic pressure tube 312 is bolted to one of the steel wire ropes 311. The telescopic pressure tube 312 is a straight telescopic tube extending towards the support plate 31, and its upper end has a safe liquid circulation interface. A liquid bladder 33 is attached to the upper surface of the support plate 31 in a shape that fits. The side of the liquid bladder 33 has a groove that fits into the inner part of the steel wire rope 311. The liquid bladder 33 is a linear telescopic bladder structure. Furthermore, the liquid bladder 33 is internally stored with any suitable safety liquid. The upper end of the liquid bladder 33 is integrally formed with a buffer pad 32 that matches the surface shape of the wind turbine blade precast component. The center of the front and rear sides of the buffer pad 32 is connected to the interior of the liquid bladder 33 and equipped with a bottom support telescopic tube 321. The bottom support telescopic tube 321 consists of an S-shaped rigid tube and a straight telescopic tube attached to the lower surface of the wind turbine blade precast component. The straight telescopic tube has reinforcing ribs inside to assist in straight extension. The telescopic pressure tube 312 has the same structure as the bottom support telescopic tube 321. The front side of the buffer pad 32 is provided with an interface on one side of the bottom support telescopic tube 321 that communicates with the interior of the liquid bladder 33, and the matching pipeline is connected to the upper interface of the telescopic pressure tube 312.

[0018] During operation, the gantry hoisting equipment 1 is first assembled in the designated position, and its gantry and traveling mechanism can move flexibly. The lugs on the lower surface of the lifting beam 2 are connected to the pad 3 via steel wire ropes 311. The support plate 31 of the pad 3 is arc-shaped and matches the surface of the beam. Initially, the pad 3 hangs naturally, and the liquid bladder 33 and the buffer pad 32 are not in contact with the beam. The telescopic pressure pipe 312 and the bottom telescopic pipe 321 are in the initial state, and the internal safety liquid circulation is connected. The gantry hoisting equipment 1 drives the lifting beam 2 to move above the beam, lowering the height to bring the pad 3 closer, until the beam is placed on the buffer pad 32, and the weight of the beam presses down on the buffer pad. 32 and liquid bladder 33, the liquid in liquid bladder 33 flows into bottom support telescopic tube 321 and telescopic pressure tube 312, the two extend and adjust, forming initial multi-point support and pressure positioning. After the lifting system is started, the main beam is raised with pad 3, and the gravity is fully applied to buffer pad 32 and liquid bladder 33. Liquid bladder 33 is further compressed, and more liquid flows into the two telescopic tubes. Bottom support telescopic tube 321 extends the support distance, and telescopic pressure tube 312 enhances pressure positioning. When hoisted to the designated position for assembly, the weight of the main beam is borne by the installation support, liquid bladder 33 is reset, and bottom support telescopic tube 321 and telescopic pressure tube 312 are also reset.

[0019] In summary, by setting up buffer pads 32 and liquid bladders 33 that match the surface shape of the precast wind turbine blade beam, as well as telescopic pressure pipes 312 and bottom support telescopic pipes 321 that can be adjusted by safe liquid circulation, multi-point support and pressure positioning can be formed during hoisting, effectively dispersing the stress on the beam and avoiding the problem of excessive bending moment caused by large spacing between fixed lifting points. In particular, it can reduce the load on stress concentration areas such as the blade root and blade tip transition area, preventing cracks from forming. At the same time, the shape of the buffer pads 32 matching the surface of the beam further improves the uniformity of stress distribution.

[0020] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0021] Working principle: During operation, the gantry hoisting equipment 1 is first pre-assembled at the designated position for hoisting the precast wind turbine blade beam. Its gantry structure and operating mechanism ensure that the equipment can move flexibly within the workshop, adapting to a compact production layout. The lifting beam 2 serves as a load-bearing connecting component, and its lower surface lugs are pre-connected to the pad 3 via rope end hooks of the wire rope 311. The pad 3 hangs naturally under its own weight. At this time, the curved rigid plate of the support plate 31 (the raised or concave arc matches the surface shape of the beam) is in an initial suspended state. The liquid bladder 33 and the buffer pad 32 are not in contact with the beam, and the telescopic pressure pipe 312 and the support plate are in an initial suspended state. With the bottom telescopic tube 321 in its initial telescopic state, the internal safety fluid, such as special hydraulic oil, is kept circulating through the pipeline. The gantry crane 1 drives the lifting beam 2 to move above the precast beam component, slowly lowering the height of the lifting beam 2 so that the pad 3 gradually approaches the beam until the beam is stably placed on the buffer pad 32. Because the shape of the upper end face of the buffer pad 32 perfectly matches the surface of the beam, especially the curvature transition area between the blade root and the blade tip, and the arc shape of the support plate 31 is pre-matched with the surface shape of the beam, the weight of the beam itself will first exert pressure on the buffer pad 32, thereby compressing the liquid bladder 33 below, causing the liquid bladder to... The safety fluid stored inside 33 flows into the bottom support telescopic pipe 321 and the telescopic pressure pipe 312 through the connecting structure. At this time, the straight telescopic pipe (with reinforcing ribs) of the bottom support telescopic pipe 321 extends towards the lower surface of the beam and fits tightly under the action of liquid pressure. The telescopic pressure pipe 312 also extends and adjusts accordingly, together forming the initial multi-point support and pressure positioning of the beam. After the initial support and positioning are completed, the gantry crane 1 starts the lifting system, and the lifting beam 2 and the wire rope 311 drive the pad 3 and the precast beam to slowly rise. During the lifting process, the weight of the beam is completely applied to the buffer pad 32 and the liquid bladder 33, making... The liquid bladder 33 is further compressed, and more safety fluid flows into the bottom support telescopic tube 321 and the telescopic pressure tube 312. At this time, the straight telescopic tube of the bottom support telescopic tube 321 extends further under the assistance of liquid pressure and reinforcing ribs, extending the support distance to the bottom of the beam. The telescopic pressure tube 312 also extends further to strengthen the positioning of the beam. When it is hoisted to the designated assembly position for assembly, the weight of the wind turbine blade beam prefabricated component will be borne by the support it is installed on, and the liquid bladder 33 will be removed. Then the liquid bladder 33 will reset itself. At this time, the bottom support telescopic tube 321 and the telescopic pressure tube 312 will also reset themselves.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hoisting device for prefabricated wind turbine blade beams, comprising: Gantry hoisting equipment (1) is installed at the designated position for hoisting the precast wind turbine blade beam; Its features are: The pad (3) is hooked to the lugs on the lower surface of the beam (2), and the pad (3) hangs down naturally under its own weight; The pad (3) includes a support plate (31). The upper surface of the support plate (31) is rigidly connected to a steel wire rope (311) near the left and right sides. A telescopic pressure tube (312) is installed on the rope body of one of the steel wire ropes (311) with bolts. A liquid bladder (33) is attached to the upper surface of the support plate (31) in a shape matching the shape. The upper end of the liquid bladder (33) is integrally formed with a buffer pad (32) that matches the surface shape of the wind turbine blade precast component. A bottom telescopic tube (321) is installed at the center of the front and rear sides of the buffer pad (32) and communicates with the interior of the liquid bladder (33).

2. The wind power blade girder precast piece hoisting device according to claim 1, characterized in that: The pallet (31) is an arc-shaped rigid plate, and the protrusion or concavity of the arc matches the surface shape of the beam being hoisted.

3. The wind power blade girder precast piece hoisting device according to claim 1, characterized in that: The end of the wire rope (311) is equipped with a hook for connecting to the lug of the hanging beam (2).

4. The wind turbine blade precast component hoisting equipment according to claim 1, characterized in that: The telescopic pressure tube (312) is a straight telescopic tube extending toward the support plate (31), and has a safe liquid circulation interface at the upper end.

5. The wind turbine blade precast component hoisting equipment according to claim 1, characterized in that: The side of the liquid bladder (33) has a groove that fits into the steel wire rope (311). The liquid bladder (33) is a linearly telescopic bladder structure and stores any safe liquid inside.

6. The wind turbine blade precast component hoisting equipment according to claim 1, characterized in that: The bottom support telescopic tube (321) consists of an S-shaped rigid tube and a straight telescopic tube attached to the lower surface of the wind turbine blade precast component. The straight telescopic tube has reinforcing ribs inside to assist in straight extension. The telescopic pressure tube (312) has the same structure as the bottom support telescopic tube (321).

7. The wind turbine blade precast component hoisting equipment according to claim 1, characterized in that: The front side of the buffer pad (32) is provided with an interface that communicates with the inside of the liquid bladder (33) on one side of the bottom telescopic tube (321), and the matching pipeline communicates with the upper interface of the telescopic pressure tube (312).

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