Sliding type folding platform for storing offshore wind turbine blades

Abstract

A sliding type folding platform for storing offshore wind turbine blades comprises a folding type blade storage platform device arranged at the position of a ship board on one side of an offshore wind power installation ship, a blade root storage rack is arranged on the folding type blade storage platform device, and a blade middle storage rack is arranged at the position of a ship board on the other side of the offshore wind power installation ship. And the blades are arranged on the blade root storage rack and the blade middle storage rack. According to the sliding type folding platform for storing the offshore wind turbine blades, storage of super-long blades can be achieved.

Description

Technical Field

[0001] The invention relates to the field of offshore wind turbine blade installation, in particular to a sliding folding platform for storing offshore wind turbine blades. Background Art

[0002] At present, the capacity of offshore wind turbines is getting larger and larger, and the blades are getting longer and longer. How to store super-long blades has become a problem for offshore wind power installation ships. The length of blades currently in use has reached 123 meters, and the distance from the blade root rack to the blade middle rack is 65 meters. The width of the largest offshore wind power installation ship in China is only 50 meters, which can no longer meet the storage needs of super-long blades. The industry generally adopts the method of adding Bailey racks to extend the width of wind power installation ships, but Bailey racks take up a lot of space. Some flipped Bailey racks occupy the limited deck area of offshore wind power installation ships, affecting the storage and assembly of wind turbine foundation groups.

[0003] The blade storage Bailey racks currently used in the market are hinged, and installation and removal require the use of cranes, and on-site workers tighten the pins and bolts, which is time-consuming and labor-intensive, and there are many influencing factors. As the safety standards for offshore wind power construction operations become higher and higher, and the maritime and other industry authorities have strict inspection standards for offshore wind power installation ships, the industry currently generally adopts the installation of fixed Bailey racks extending out of the ship's side, which affects the berthing and navigation safety of ships and poses certain safety risks. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a sliding folding platform for storing offshore wind turbine blades, which can be extended and unfolded outwardly through a gear rack transmission mechanism in the working state; in the non-working state, it can be folded and retracted to the inner side of the ship's side of the offshore wind power installation ship in sequence; the movement of the upper three-layer platform is driven by the gear rack mechanism, which reduces the workload of manual assembly, welding, disassembly, etc. of the traditional assembly storage platform and reduces the safety risks of on-site operations.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A sliding folding platform for storing offshore wind turbine blades comprises a folding blade storage platform device arranged at the side of one side of an offshore wind power installation ship, a blade root shelf is arranged on the folding blade storage platform device, and a blade middle shelf is arranged at the side of the other side of the offshore wind power installation ship, and blades are placed on the blade root shelf and the blade middle shelf.

[0006] The foldable blade storage platform device comprises a plurality of platforms arranged in sequence up and down, and adjacent platforms are driven to unfold or fold through a gear rack transmission mechanism.

[0007] The multi-group platforms include the fourth-layer platform, the third-layer platform, the second-layer platform and the first-layer platform. The adjacent platforms are in meshing contact through the side-mounted gear racks.

[0008] The gear-rack transmission mechanism is arranged symmetrically left and right on the folding blade storage platform device.

[0009] The gear-rack transmission mechanism includes multiple groups of gears installed on the lower platform. Each group of gears is driven by a combination of a gear motor, a gearbox and an electric control clutch. The multiple groups of gears are meshed with the racks on the upper platform.

[0010] When the folding blade storage platform device is in the unfolded state, the adjacent platforms are locked by a locking device.

[0011] The locking device includes an upper base and a lower base. Among them, the upper base is fixed on the upper platform, and the lower base is fixed on the lower platform. A locking connecting piece is hinged on the upper base, and the locking connecting piece is driven to rotate by a driving rod; when the locking connecting piece is vertical, the locking pin shaft passes through the through hole of the locking connecting piece and is locked in the lower base.

[0012] The lower base is arranged at a position one-third of the distance from the front end of the lower platform; the upper base is located at the tail end of the upper platform.

[0013] The folding blade storage platform device altogether includes four groups of platforms, and all four groups of platforms are made of steel materials.

[0014] A method for storing blades on a sliding folding platform for storing offshore wind turbine blades includes the following steps: Step 1: First, drive the gear motor of the first-layer platform through the electric control system to move the second-layer platform towards the side of the ship. When the second-layer platform reaches the limit position, stop the operation, activate the locking device at this place to lock the second-layer platform; then, drive the gear motor of the second-layer platform to move the third-layer platform towards the side of the ship. When the third-layer platform reaches the limit position, stop the operation, activate the locking device at this place to lock the third-layer platform; finally, drive the gear motor of the third-layer platform to move the fourth-layer platform towards the side of the ship. When the fourth-layer platform reaches the limit position, stop the operation, activate the locking device at this place to lock the fourth-layer platform; finally, the blade storage platform extends to the maximum area. Step 2: After all the upper three-layer platforms are extended and locked, the crane configured on the offshore wind power installation ship hoists the blade from the transport ship to the dedicated blade storage platform; the blade is placed on the folding blade storage platform device and the main deck of the offshore wind power installation ship through the blade root shelf and the blade middle shelf respectively. Adjust the blade clamp, clamp the blade and then hoist it up, and finally complete the docking with the hub of the wind turbine. Step 3: After use, through the electric control system, retract the second - layer platform, the third - layer platform, and the fourth - layer platform in sequence, and fold the above three platforms directly above the first - layer platform, thus realizing the folding and recovery of the blades.

[0015] The present invention provides a sliding - type folding platform for storing offshore wind turbine blades, having the following technical effects: 1) By adopting a foldable design, it can effectively solve the problem of insufficient deck area of offshore wind power installation platforms and realize the lightering and storage of ultra - long wind turbine blades.

[0016] The fourth - layer platform, the third - layer platform, the second - layer platform, and the first - layer platform adopt a common steel plate structure. There is no direct contact between adjacent upper and lower platforms. Instead, they are in contact, supported, and moved through a gear - rack mechanism, with less friction and are fixed by a locking device during operation.

[0017] The advantages of adopting a four - layer platform: First, it reduces the occupied space and realizes free retraction and extension. Second, the four - layer platform adopts an electric gear - rack moving system, which can realize rapid retraction and extension.

[0018] 2) By applying a gear - rack transmission system, the rapid deployment and folding of the three platforms are realized. Compared with the traditional integral Bailey truss, the operation is mechanized and automated, saving labor.

[0019] The gear - rack design can effectively reduce the friction between adjacent upper and lower platforms, and at the same time ensure the precise telescoping of the platform, so as to ensure that the area of the platform meets the production needs. Setting multiple gears can ensure the full - stroke retraction and extension of the upper three platforms.

[0020] In the gear - rack transmission mechanism, multiple groups of gears are located on the lower - layer platform, and the racks are located on the upper - layer platform. Since the motor and gears are installed on the lower - layer platform, its center of gravity is lower, and the stability of the whole system is better, which can better resist the overturning moment. Since the racks are fixed along the entire length (or width) direction of the upper - layer platform, the upper - layer platform is evenly stressed during movement and will not show local stress concentration, thus reducing the deformation of the upper - layer platform caused by uneven stress.

[0021] 3) The present invention avoids the problem of difficult retraction and deployment of the traditional Bailey truss outside the ship's side, ensuring the safety of the ship when berthing at the port or the berthing of transport ships and traffic ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following further explains the present invention in conjunction with the drawings and embodiments: Figure 1 It is the overall layout top view of the present invention.

[0023] Figure 2 It is the overall layout side view of the present invention.

[0024] Figure 3 A partial schematic diagram of the present invention.

[0025] Figure 4 is Figure 3 a cross-sectional view at position A in

[0026] Figure 5 a schematic diagram of the first state of the locking device in the present invention.

[0027] Figure 6 a schematic diagram of the second state of the locking device in the present invention.

[0028] Figure 7 is Figure 6 a left view of the locking device in

[0029] In the figure: Offshore wind turbine installation vessel 1, Foldable blade storage platform device 2, Rack and pinion transmission mechanism 3, Middle blade shelf 5, Fourth layer platform 6, Third layer platform 7, Second layer platform 8, First layer platform 9, Rack 10, Pinion 11, Locking device 12, Root blade shelf 13, Gear motor 14, Gearbox and electric control clutch combination 15. Specific embodiments

[0030] As Figures 1-4 shown, a sliding and foldable platform for storing offshore wind turbine blades includes a set of foldable blade storage platform devices 2 arranged on the starboard side of the offshore wind turbine installation vessel 1. The foldable blade storage platform device 2 includes four layers of blade storage platforms. The first layer platform 9 is arranged on the main deck of the offshore wind turbine installation vessel 1 while keeping the end flush with the ship's side. The advantage of such a setting: It meets the placement requirements of ultra-long blades, facilitates the clamping and hoisting of blades on the main deck of the offshore wind turbine installation vessel, and at the same time, the use area of the main deck of the offshore wind turbine installation vessel can be extended or expanded through the sliding and foldable platform.

[0031] Racks 10 are respectively arranged at the bottoms on both sides of the second layer platform 8, the third layer platform 7 and the fourth layer platform 6. The racks 10 are engaged with the pinions 11 of the corresponding lower layer platform. The pinions 11 are driven by the gear motors 14, thereby driving the entire upper layer platform to slide left and right. Thus, the sliding of the second layer platform 8, the third layer platform 7 and the fourth layer platform 6 is realized. When the upper three layers of platforms all slide to the outermost side, at this time, the adjacent platforms are locked and fixed by the locking device 12 to ensure the fixation of the entire platform. At this time, the storage requirements of ultra-long blades can be met.

[0032] The locking device 12 includes an upper base 16 and a lower base 20. The upper base 16 is fixed on the upper layer platform, and the lower base 20 is fixed on the lower layer platform. A locking connecting member 19 is rotatably installed on the upper base 16 through a pin shaft 17. The other end of the locking connecting member 19 is provided with a through hole. A pin shaft hole is provided on the lower base 20. In addition, a driving rod 18 is hinged on the upper layer platform on one side of the locking connecting member 19. The driving rod 18 is a hydraulic telescopic rod or an electric telescopic rod. The other end of the driving rod 18 is hinged to a point on the locking connecting member 19 that is offset from the pin shaft 17. When the upper layer platform moves into place, the driving rod 18 retracts, and the locking pin 21 passes through the holes on the lower base 20 and the locking connecting member 19 to achieve locking and limiting.

[0033] As Figures 5-6 shown, taking the locking device 12 between the first layer platform 9 and the second layer platform 8 as an example for illustration. When the second layer platform 8 is driven by the gear-rack transmission mechanism 3 and has not reached the predetermined position, the driving rod 18 extends, and the locking connecting member 19 extends outwards; when the second layer platform 8 travels to the predetermined position, the driving rod 18 retracts, and the driving rod 18 retracts the locking connecting member 19 from the outside to the lower base 20 and the through hole of the locking connecting member 19 is aligned with the pin shaft hole of the lower base 20. Then, the locking pin 21 is used to fix the locking connecting member 19 and the lower base 20, so as to realize the locking and fixing of the second layer platform 8 and the lower platform 9.

[0034] Working principle and process: 1). First, drive the gear motor 14 of the first layer platform 9 through the electric control system to move the second layer platform 8 towards the side of the ship. When the second layer platform 8 reaches the limit position, stop the operation and start the locking device 12. Then, drive the gear motor 14 of the second layer platform 8 through the electric control system to move the third layer platform 7 towards the side of the ship. When the third layer platform 7 reaches the limit position, stop the operation and start the locking device 12. Finally, drive the gear motor 14 of the third layer platform 7 through the electric control system to move the fourth layer platform 6 towards the side of the ship. When the fourth layer platform 6 reaches the limit position, stop the operation and start the locking device 12, and finally the blade storage platform extends to the maximum area.

[0035] 2). After all the upper three-layer platforms are extended and locked, the crane configured on the offshore wind power installation ship 1 lifts the blade from the transport ship to the storage platform of the blade 4. The blade 4 is placed on the folding blade storage platform device 2 and the main deck of the offshore wind power installation ship 1 through the blade root shelf 13 and the blade middle shelf 5 respectively.

[0036] When hoisting is required, install and adjust the blade fixture on the blade 4. The crane hoists and lifts the blade by clamping the blade with the blade fixture, and finally completes the docking with the hub of the wind turbine.

[0037] The blade 4 is placed on the blade root shelf 13 and the middle blade shelf 5. The middle blade shelf 5 and the blade root shelf 13 are relatively mature tooling at present, generally provided by blade manufacturers and carried with them when leaving the factory. It generally includes an upper bracket, a lower bracket, a slide plate, a sleeve, a rubber anti-collision plate, a shaft clamping plate, a locking bolt, a lifting point ear plate, etc. The blade is leveled and installed before leaving the factory.

[0038] 3) After use, through the control system, the second-layer platform 8, the third-layer platform 7, and the fourth-layer platform 6 are retracted in sequence, and the above three platforms are folded directly above the first-layer platform 9, thus realizing the folding and recovery of the blade, minimizing the occupied area, and maximizing the utilization of the main deck area of the offshore wind power installation vessel.

[0039] To ensure the safe and reliable movement of the three platforms on the upper part of the folding blade storage platform device 2, as Figure 3 shown, gear motors 14, gearbox and electric control clutch assemblies 15 are symmetrically installed on both inner sides of the first-layer platform 9, the second-layer platform 8, and the third-layer platform 7. Through electric drive, the external gear 11 is engaged with the rack 10 to rotate, thus realizing the retraction and extension functions of the upper three platforms.

Claims

1. A sliding and folding platform for storing offshore wind turbine blades, characterized in that: It includes a foldable blade storage platform device (2) arranged at the side of the hull of an offshore wind turbine installation vessel (1). A root shelf (13) is provided on the foldable blade storage platform device (2), and a middle shelf (5) is arranged at the side of the hull on the other side of the offshore wind turbine installation vessel (1). The blade (4) is placed on the root shelf (13) and the middle shelf (5).

2. The slip-type folding platform for storing offshore wind turbine blades according to claim 1, wherein: The foldable blade storage platform device (2) includes multiple groups of platforms arranged successively from top to bottom. The adjacent platforms are driven to unfold or fold by a gear-rack transmission mechanism (3).

3. The slip-type folding platform for storing offshore wind turbine blades according to claim 2, characterized in that: The multiple groups of platforms include a fourth-layer platform (6), a third-layer platform (7), a second-layer platform (8), and a first-layer platform (9). The adjacent platforms are in meshing contact through the gears and racks on the sides.

4. A sliding and folding platform for storing offshore wind turbine blades according to claim 3, characterized in that: The gear-rack transmission mechanisms (3) are arranged symmetrically on the left and right of the foldable blade storage platform device (2).

5. A sliding and folding platform for storing offshore wind turbine blades according to claim 4, characterized in that: The gear-rack transmission mechanism (3) includes multiple groups of gears (11) installed on the lower platform. Each group of gears (11) is driven by a gear motor (14), a gearbox, and an electronic control clutch assembly (15). The multiple groups of gears (11) are meshed with the racks (10) on the upper platform.

6. A sliding and folding platform for storing an offshore wind turbine blade according to claim 5, characterized in that: When the foldable blade storage platform device (2) is in the unfolded state, the adjacent platforms are locked by a locking device (12).

7. A sliding and folding platform for storing an offshore wind turbine blade according to claim 6, characterized in that: The locking device (12) includes an upper base (16) and a lower base (20). Among them, the upper base (16) is fixed on the upper platform, and the lower base (20) is fixed on the lower platform. A locking connecting piece (19) is hinged on the upper base (16), and the locking connecting piece (19) is driven to rotate by a driving rod (18). When the locking connecting piece (19) is vertical, a locking pin shaft (21) passes through the through hole of the locking connecting piece (19) and is locked in the lower base (20).

8. A sliding and folding platform for storing offshore wind turbine blades according to claim 7, characterized in that: The lower base (20) is arranged at a position one-third of the distance from the front end of the lower platform; the upper base (16) is located at the tail end of the upper platform.

9. The slip - type folding platform for storing offshore wind turbine blades according to claim 8, characterized in that: The foldable blade storage platform device (2) altogether includes four groups of platforms, and all four groups of platforms are made of steel materials.

10. A method for storing blades on a sliding and foldable platform for storing offshore wind turbine blades according to any one of claims 1-9, comprising the following steps: Step 1: First, drive the gear motor (14) of the first-layer platform (9) through the electronic control system to move the second-layer platform (8) towards the side of the hull. When the second-layer platform (8) reaches the limit position, stop the operation, start the locking device (12) at this place, and lock the second-layer platform (8). Then, drive the gear motor (14) of the second-layer platform (8) to move the third-layer platform (7) towards the side of the hull. When the third-layer platform (7) reaches the limit position, stop the operation, start the locking device (12) at this place, and lock the third-layer platform (7). Finally, drive the gear motor (14) of the third-layer platform (7) to move the fourth-layer platform (6) towards the side of the hull. When the fourth-layer platform (6) reaches the limit position, stop the operation, start the locking device (12) at this place, and lock the fourth-layer platform (6). Finally, the blade storage platform extends to the maximum area; Step 2: After all the upper three platforms are fully extended and locked, the crane equipped on the offshore wind power installation vessel (1) lifts the blade from the transport ship to the dedicated storage platform of the blade (4); the blade (4) is placed on the folding blade storage platform device (2) and the main deck of the offshore wind power installation vessel (1) through the blade root shelf (13) and the blade middle shelf (5) respectively. Adjust the blade clamp, hold the blade and hoist it, and finally complete the docking with the hub of the wind turbine. Step 3: After use, through the electric control system, the second layer platform (8), the third layer platform (7), and the fourth layer platform (6) are retracted in sequence, and the above three platforms are folded directly above the first layer platform (9), thus realizing the folding and recycling of the blade.

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