Bow Fast Limiting Device for Docking Offshore Wind Power Foundation

Abstract

The present application provides a bow fast limiting device for docking with an offshore wind power foundation, which includes a step platform arranged at the front end of the bow. Bow-shaped holding column devices are respectively arranged on both sides of the step platform on the bow. The holding column devices are connected to the bow through a hinge seat group so that the operation and maintenance ship can swing. Each holding column device is used to hold each anti-collision bar, solving the problem of stably connecting the berthing structure of the offshore wind power foundation with the operation and maintenance ship.

Description

Technical Field

[0001] The present invention relates to the field of offshore wind power, and in particular to a bow fast limiting device for docking offshore wind power foundations. Background Art

[0002] The berthing structure (or berthing facility) is an accessory structure of the offshore wind turbine foundation, which plays a connecting role in transferring offshore maintenance personnel from an offshore wind power operation and maintenance vessel (such as a CTV). Usually, the CTV is connected to the anti-collision column (berthing pile) of the berthing structure by means of head-on docking. Offshore maintenance personnel step from the bow to the boarding straight ladder and enter the wind turbine system for operation. The berthing structure directly affects the life safety of offshore maintenance personnel and their adaptability and comfort to the structure. Therefore, the safety in design and ergonomics of the berthing structure are crucial.

[0003] The extrusion safety distance of the berthing structure refers to the vertical distance from the outer edge of the bow anti-collision fender to the climbing straight ladder when the CTV is performing head-on docking operations. This distance is the safety distance that ensures that offshore maintenance personnel will not be squeezed when the height of the head-on docking with the CTV is the same during the process of climbing the straight ladder. It is mainly related to the body thickness of offshore maintenance personnel after being fully armed and the intrusion depth of the bow anti-collision fender of the CTV. The size of this extrusion safety distance also affects the appropriate distance for offshore maintenance personnel to step from the bow to the climbing straight ladder.

[0004] Therefore, there is an urgent need for a device that can stably connect the bow to the berthing structure to prevent safety problems caused by the instability of the operation and maintenance vessel when maintenance personnel climb the straight ladder. Summary of the Invention

[0005] The present invention provides a bow fast limiting device for docking offshore wind power foundations, which solves the problem of stable connection between the berthing structure of the offshore wind power foundation and the operation and maintenance vessel.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: a bow fast limiting device for docking offshore wind power foundations, including a step platform provided at the front end of the bow. On both sides of the step platform on the bow, there are respectively provided column holding devices, and the column holding devices are connected to the bow through a hinge seat group so that the operation and maintenance vessel can swing. Each column holding device is used to hold each anti-collision rod.

[0007] In a preferred solution, the column holding device includes a base frame. At both ends of the base frame, there are rotatable clamping arms. At the end of each clamping arm, there is a rotating first abutting wheel. Between the two clamping arms on the base frame, there is a holding lock device. The holding lock device includes a moving trigger device slidably connected to the base frame. At both ends of the moving trigger device, there are rotatable lever arms. At the end of the lever arm far from the moving trigger device, there is a hook groove. On the clamping arm, there is a vertical rod. The anti-collision rod squeezes the moving trigger device to make the lever arm rotate, and the hook groove of the lever arm catches the vertical rod to lock the angle of the clamping arm.

[0008] In a preferred solution, a hinge pin shaft is provided in the middle of the lever arm. The hinge pin shaft is hinged to the base frame. Waist-shaped holes are provided at both ends of the moving trigger device. A rotating pin is further provided at one end of the lever arm close to the moving trigger device, and the rotating pin is inserted into the waist-shaped holes.

[0009] In a preferred solution, in the clamped state, the line connecting the center of the vertical rod to the center of the clamping arm rotating shaft is perpendicular to the line connecting the center of the vertical rod to the center of the hinge pin shaft.

[0010] In a preferred solution, a rotatable second abutting wheel is provided on one side of the moving trigger device. At least two first guide rods are provided on the other side of the moving trigger device. The first guide rods are slidably connected to the base frame. A card slot is provided on the first guide rods. A guide sleeve is provided on the back side of the base frame. A slidable plug plate is provided in the guide sleeve, and one end of the plug plate is stuck in the card slot.

[0011] In a preferred solution, a trigger rod is provided on the back side of the moving trigger device. A conical head is provided at the end of the trigger rod. The plug plate is provided with a through hole. The conical surface of the conical head presses the through hole so that the end face of the plug plate is stuck in the card slot.

[0012] In a preferred solution, a hollow sleeve is provided between the trigger rod and the conical head. The conical head is slidably sleeved with the hollow sleeve. A first spring is further provided in the hollow sleeve, and the end of the first spring abuts against the conical head.

[0013] In a preferred solution, the moving trigger device includes a front end frame and a rear end frame. The waist-shaped holes are provided at both ends of the rear end frame. The second abutting wheel is provided on the front end frame. The trigger rod is connected to the rear end frame. A plurality of second guide rods are provided on the rear end frame. A second spring is sleeved on the second guide rods, and both ends of the second spring abut against the front end frame and the rear end frame respectively.

[0014] In a preferred solution, the hinge seat group includes a first hinge seat and a second hinge seat. The first hinge seat is connected to the base frame. The second hinge seat is connected to the bow of the ship. A central rotating rod is further provided. The first hinge seat is rotatably connected to the second hinge seat through the central rotating rod. The second hinge seat rotates synchronously with the central rotating rod. The central rotating rod is provided with an outer extension part. The lower end of the plug plate is provided with an outer extension end, and the outer extension end is inserted between the base frame and the end of the outer extension part.

[0015] In a preferred solution, a sub-arm with one end hinged to the base frame is provided on the outside of the clamping arm. The sub-arm is parallel to the clamping arm. A connecting arm is further provided. The middle of the connecting arm is hinged to the clamping arm. One end of the connecting arm is hinged to the sub-arm. The first abutting wheel is provided at the other end of the connecting arm.

[0016] The beneficial effects of the present invention are as follows: A step platform and a column clamping device are provided at the front end of the ship's bow. The step platform guides and enters between the anti-collision bars, and the column clamping device clamps the anti-collision bars. The entire process does not require manual intervention and does not occupy too much area of the maintenance ship; the step platform and the double-column clamping device limit the left-right swing of the hull and improve the safety of the boarding personnel; the ship's bow and the anti-collision column are connected by a hinge seat group, and the stern can swing up and down with the waves, reducing the tension on the anti-collision column; the distance between the ship's bow and the ladder is fixed to prevent the problem of excessive or too small spacing of the maintenance ship with the fluctuation of the waves; the column clamping device has a self-locking function. The clamping process does not require manual intervention, and the unlocking process requires manual unlocking, which not only simplifies the boarding process but also improves the clamping safety factor; a plug plate is provided for secondary anti-loosening locking, which can further enhance the clamping safety; a trigger rod is used to automatically trigger the secondary locking, and the plug plate and the lever arm can be unlocked by reverse pushing, with simple operation and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 It is a top view schematic diagram of the present invention.

[0019] Figure 2 It is a side view schematic diagram of the present invention.

[0020] Figure 3 It is the clamping state of the present invention Figure 1 .

[0021] Figure 4 It is the clamping state of the present invention Figure 2 .

[0022] Figure 5 It is the clamping state of the present invention Figure 3 .

[0023] Figure 6 It is a schematic diagram of the lever arm locking state of the present invention.

[0024] Figure 7 It is a front side schematic diagram of the column clamping device of the present invention.

[0025] Figure 8 It is a rear side schematic diagram of the column clamping device of the present invention.

[0026] Figure 9 It is a schematic diagram of the clamping lock device of the present invention.

[0027] Figure 10 It is an internal structure diagram of the trigger rod of the present invention.

[0028] Figure 11 It is the state of the plug plate of the present invention Figure 1 .

[0029] Figure 12 is the state of the plug plate of the present invention Figure 2 .

[0030] Figure 13 is the optimized schematic diagram of the plug plate of the present invention.

[0031] Figure 14 is the optimized side view of the plug plate of the present invention.

[0032] Figure 15 is the schematic diagram of the hinge seat group of the present invention.

[0033] In the figure: base frame 1; clamping arm 2; first abutting wheel 201; tension spring 202; vertical rod 203; auxiliary arm 204; connecting arm 205; locking device 3; lever arm 301; rotating pin 302; hinge pin 303; moving trigger device 4; second abutting wheel 401; front end frame 402; rear end frame 403; waist-shaped hole 404; first guide rod 405; trigger rod 406; hollow sleeve 407; tapered head 408; first spring 409; second guide rod 410; second spring 411; card slot 412; plug plate 5; through hole 501; guide sleeve 502; outer extension end 503; anti-collision rod 6; hinge seat group 7; outer extension part 701; first hinge seat 702; second hinge seat 703; central rotating rod 704; ladder 8; offshore wind power foundation 9; bow 10; step platform 1001. Detailed implementation mode

[0034] As Figures 1-15 shown in, a bow fast limiting device for docking an offshore wind power foundation includes a step platform 1001 provided at the front end of the bow 10. Clamping devices are respectively provided on both sides of the step platform 1001 on the bow 10. The clamping devices are connected to the bow 10 through a hinge seat group 7 to enable the maintenance ship to swing, and each clamping device is used to hold each anti-collision rod 6.

[0035] The upper surface of the step platform 1001 is flush with the bow 10. The step platform 1001 is inserted between two anti-collision rods 6 and close to the ladder 8. At the same time, the clamping device holds the anti-collision rod 6. At this time, the vertical position of the bow 10 is stable and will not fluctuate too much. However, due to the existence of the hinge seat group 7, the stern can fluctuate up and down, reducing the buoyancy torque on the anti-collision rod 6 and preventing the anti-collision rod 6 from being pulled off from the offshore wind power foundation 9.

[0036] In the preferred scheme, the column holding device includes a basic frame 1, rotatable clamping arms 2 are provided at both ends of the basic frame 1, and a rotatable first abutment wheel 201 is provided at the end of each clamping arm 2. A locking device 3 is provided between the two clamping arms 2 on the basic frame 1, and the locking device 3 includes a mobile triggering device 4 slidably connected to the basic frame 1, and rotatable lever arms 301 are provided at both ends of the mobile triggering device 4. A hook groove is provided at the end of the lever arm 301 away from the mobile triggering device 4, and a vertical rod 203 is provided on the clamping arm 2. The anti-collision rod 6 squeezes the mobile triggering device 4 to rotate the lever arm 301, and the hook groove of the lever arm 301 clamps the vertical rod 203 to lock the angle of the clamping arm 2.

[0037] The positioning fixtures are installed at both ends of the bow of the maintenance ship. When the maintenance ship approaches the anti-collision bar 6, the anti-collision bar 6 enters the gap between the two clamping arms 2 and gradually squeezes the mobile trigger device 4 as the maintenance ship moves forward. The back side of the lever arm 301 can be against a certain structure of the base frame 1, and the end of the lever arm 301 with the hook groove rotates forward and hooks the vertical rod 203, locking the angle of the clamping arm 2 to prevent the clamping arm 2 from opening by itself. At this time, the anti-collision bar 6 is held, and the front end of the maintenance ship is connected to the anti-collision bar 6 to prevent the bow from shaking too much or shifting when personnel board the ship from the ladder, causing danger.

[0038] A tension spring 202 is used between the clamp arm 2 and the base frame 1 to limit the expansion angle of the clamp arm 2 and allow the clamp arm 2 to return to its original position.

[0039] In the preferred embodiment, a hinge pin 303 is provided in the middle of the lever arm 301, the hinge pin 303 is hinged to the base frame 1, waist-shaped holes 404 are provided at both ends of the mobile trigger device 4, and a rotating pin 302 is also provided at one end of the lever arm 301 close to the mobile trigger device 4, and the rotating pin 302 is inserted into the waist-shaped hole 404.

[0040] In a preferred solution, in the clamping state, the line from the center of the vertical rod 203 to the center of the rotating shaft of the clamp arm 2 is perpendicular to the line from the center of the vertical rod 203 to the center of the hinge pin 303 .

[0041] In the clamped state, the axis of the vertical rod 203 is coplanar with the axis of the hinge pin 303 and perpendicular to the clamp arm 2. When the clamp arm 2 is to be released, the angle between the moving direction of the vertical rod 203 and the plane is close to zero, thus forming a dead point and making it difficult for the clamp arm 2 to release by itself.

[0042] In the preferred solution, a rotatable second abutment wheel 401 is provided on one side of the mobile trigger device 4, and at least two first guide rods 405 are provided on the other side of the mobile trigger device 4. The first guide rods 405 are slidably connected to the basic frame 1, and a card slot 412 is provided on the first guide rod 405. A guide sleeve 502 is provided on the back side of the basic frame 1, and a slidable plug plate 5 is provided in the guide sleeve 502, and one end of the plug plate 5 is stuck in the card slot 412.

[0043] The anti-collision bar 6 presses against the moving trigger device 4. When the moving trigger device 4 retracts until the card slot 412 is exposed from the back side of the base frame 1, it indicates that the anti-collision bar 6 is completely held. At this time, the slidable plug plate 5 can be used to lock the plug plate 5 in the card slot 412 to prevent the lever arm 301 from releasing the vertical rod 203 and opening.

[0044] In a preferred embodiment, a trigger rod 406 is provided on the back side of the moving trigger device 4. A tapered head 408 is provided at the end of the trigger rod 406. The plug plate 5 is provided with a through hole 501. The tapered surface of the tapered head 408 presses against the through hole 501 so that the end face of the plug plate 5 is snapped into the card slot 412.

[0045] That is to say, as the anti-collision bar 6 presses against and pushes the second abutting wheel 401 inward, the trigger rod 406 at the rear end continuously moves backward. The tapered head 408 passes through the back plate of the base frame 1 and begins to contact the inner wall of the through hole 501. Due to the presence of the guide sleeve 502, the plug plate 5 can only move in the direction of the first guide rod 405. When the cylindrical part of the tapered head 408 is concentric with the through hole 501, the end face of the plug plate 5 is snapped into the card slot 412.

[0046] If the tapered head 408 does not have a certain flexibility, when the tapered surface of the tapered head 408 contacts the inner wall of the through hole 501 and presses the end face of the plug plate 5 against the outer wall of the first guide rod 405, at this time, the plug plate 5 is not aligned with the card slot 412 yet, the tapered head 408 cannot move backward continuously, and the first guide rod 405 cannot move backward either, so the moving trigger device 4 is stuck.

[0047] In a preferred embodiment, a hollow sleeve 407 is provided between the trigger rod 406 and the tapered head 408. The tapered head 408 is slidably sleeved with the hollow sleeve 407. A first spring 409 is further provided inside the hollow sleeve 407. The end of the first spring 409 abuts against the tapered head 408.

[0048] When the tapered surface of the tapered head 408 contacts the inner wall of the through hole 501 and presses the end face of the plug plate 5 against the outer wall of the first guide rod 405, the first spring 409 is compressed, and the first guide rod 405 can continue to move. When the card slot 412 is exposed and aligned with the plug plate 5, the tapered head 408 aligns the through hole 501 under the pressure of the first spring 409 and makes the end face of the plug plate 5 snap into the card slot 412.

[0049] In a preferred embodiment, the moving trigger device 4 includes a front end frame 402 and a rear end frame 403. Waist-shaped holes 404 are provided at both ends of the rear end frame 403. The second abutting wheels 401 are provided on the front end frame 402. The trigger rod 406 is connected to the rear end frame 403. The rear end frame 403 is provided with a plurality of second guide rods 410. Second springs 411 are sleeved on the second guide rods 410. Both ends of the second springs 411 abut against the front end frame 402 and the rear end frame 403 respectively.

[0050] The clamping arm 2 first hooks the vertical rod 203 through the lever arm 301 for self-locking. To ensure the safety of locking, the conical head 408 jacks up the plug plate 5 and snaps it into the card slot 412 to form a double lock.

[0051] At this time, the anti-collision bar 6 pushes the first abutting wheel 201 from the inside and the clamping arm 2 cannot be opened. Personnel need to press the conical head 408 from the bow of the ship, that is, the back side of the base frame 1. The conical head 408 first contracts and unlocks the plug plate 5, and the plug plate 5 withdraws from the card slot 412. Due to the pressure in the first spring 409, the first guide rod 405 is pushed forward; since the clamping arm 2 has not been opened at this time, the anti-collision bar 6 and the front end frame 402 against the anti-collision bar 6 cannot move, but due to the variable relative distance between the front end frame 402 and the rear end frame 403, the waist-shaped hole 404 can continue to move forward, releasing the lever arm 301. At this time, the clamping arm 2 is unlocked. Due to the pressure in the second spring 411, the front end frame 402 pushes the anti-collision bar 6 and opens the clamping arm 2, and the anti-collision bar 6 immediately withdraws from the clamping space of the clamping arm 2.

[0052] Although this process is complex, only the conical head 408 needs to be pushed, which is extremely convenient. Since the conical head 408 has a taper, it can be operated while wearing gloves or connected to an external linear moving mechanism.

[0053] In a preferred solution, the hinge seat group 7 includes a first hinge seat 702 and a second hinge seat 703. The first hinge seat 702 is connected to the base frame 1, the second hinge seat 703 is connected to the bow 10 of the ship, and a central rotating rod 704 is also provided. The first hinge seat 702 is rotatably connected to the second hinge seat 703 through the central rotating rod 704. The second hinge seat 703 rotates synchronously with the central rotating rod 704. The central rotating rod 704 is provided with an outer extension 701, and the lower end of the plug plate 5 is provided with an outer extension end 503. The outer extension end 503 is inserted between the base frame 1 and the end of the outer extension 701.

[0054] The middle of the lower end of the guide sleeve 502 is penetrated to facilitate the extension of the outer extension end 503. When the base frame 1 does not hold the anti-collision bar 6, the plug plate 5 moves downward under the action of gravity to the bottom end of the guide sleeve 502, and the outer extension end 503 extends downward and is inserted into the gap between the base frame 1 and the outer extension 701. The outer extension 701 cannot rotate or can only swing with a very small amplitude. The outer extension 701 is integrally connected to the central rotating rod 704 and the second hinge seat 703. Therefore, the base frame 1 cannot swing relative to the bow 10 of the ship, avoiding the drooping of the column clamping device when it is not working and facilitating the alignment of the column clamping device with the anti-collision bar 6; when the column clamping device holds the anti-collision bar 6, as described above, the conical head 408 picks up the plug plate 5, so the outer extension end 503 is withdrawn from the gap, and the outer extension 701, the central rotating rod 704 and the second hinge seat 703 can all swing. Although the bow 10 of the ship cannot move greatly in the up and down direction, it can have an inclination angle. Therefore, the stern of the maintenance ship can swing with the waves, avoiding forming a large rotational torque on the anti-collision bar 6.

[0055] In a preferred solution, a secondary arm 204 with one end hinged to the base frame 1 is provided on the outer side of the clamping arm 2. The secondary arm 204 is parallel to the clamping arm 2. A connecting arm 205 is also provided. The middle of the connecting arm 205 is hinged to the clamping arm 2. One end of the connecting arm 205 is hinged to the secondary arm 204. The first abutting wheel 201 is provided at the other end of the connecting arm 205.

[0056] The secondary arm 204 can strengthen the structure of the clamping arm 2, making the clamping structure more stable.

[0057] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A bow fast limiting device for docking an offshore wind power foundation, characterized in that: It includes a step platform (1001) provided at the front end of the bow (10). Bollard devices are respectively provided on both sides of the step platform (1001) on the bow (10). The bollard devices are connected to the bow (10) through a hinge seat group (7) so that the maintenance ship can swing, and each bollard device is used to hold each anti-collision bar (6). The bollard device includes a base frame (1). Rotatable clamping arms (2) are provided at both ends of the base frame (1). A rotating first abutting wheel (201) is provided at the end of each clamping arm (2). A locking device (3) is provided between the two clamping arms (2) on the base frame (1). The locking device (3) includes a moving trigger device (4) slidably connected to the base frame (1). Rotatable lever arms (301) are provided at both ends of the moving trigger device (4). A hook groove is provided at the end of the lever arm (301) away from the moving trigger device (4). A vertical rod (203) is provided on the clamping arm (2). The anti-collision bar (6) squeezes the moving trigger device (4) to rotate the lever arm (301), and the hook groove of the lever arm (301) catches the vertical rod (203) to lock the angle of the clamping arm (2). A hinge pin shaft (303) is provided in the middle of the lever arm (301). The hinge pin shaft (303) is hinged to the base frame (1). Waist-shaped holes (404) are provided at both ends of the moving trigger device (4). A rotating pin (302) is further provided at the end of the lever arm (301) close to the moving trigger device (4). The rotating pin (302) is inserted into the waist-shaped hole (404). In the clamped state, the connection line between the center of the vertical rod (203) and the center of the rotation axis of the clamping arm (2) is perpendicular to the connection line between the center of the vertical rod (203) and the center of the hinge pin shaft (303).

2. The bow fast limiting device for docking the offshore wind power foundation according to claim 1, characterized in that: A rotatable second abutting wheel (401) is provided on one side of the moving trigger device (4). At least two first guide rods (405) are provided on the other side of the moving trigger device (4). The first guide rods (405) are slidably connected to the base frame (1). A card slot (412) is provided on the first guide rod (405). A guide sleeve (502) is provided on the back side of the base frame (1). A sliding plug plate (5) is provided in the guide sleeve (502). One end of the plug plate (5) is stuck in the card slot (412).

3. The bow quick limit device for docking the offshore wind power foundation according to claim 2, characterized in that: A trigger rod (406) is provided on the back side of the moving trigger device (4). A conical head (408) is provided at the end of the trigger rod (406). The plug plate (5) is provided with a through hole (501). The conical surface of the conical head (408) squeezes the through hole (501) to make the end face of the plug plate (5) snap into the card slot (412).

4. The bow quick limit device for docking an offshore wind power foundation according to claim 3, characterized in that: A hollow sleeve (407) is provided between the trigger rod (406) and the conical head (408). The conical head (408) is slidably sleeved with the hollow sleeve (407). A first spring (409) is further provided in the hollow sleeve (407). The end of the first spring (409) abuts against the conical head (408).

5. The bow fast limit device for docking offshore wind power foundations according to claim 4, characterized in that: The mobile triggering device (4) includes a front end frame (402) and a rear end frame (403). Waist-shaped holes (404) are provided at both ends of the rear end frame (403). The second abutting wheel (401) is provided on the front end frame (402). The trigger rod (406) is connected to the rear end frame (403). The rear end frame (403) is provided with a plurality of second guide rods (410). A second spring (411) is sleeved on the second guide rod (410). Both ends of the second spring (411) abut against the front end frame (402) and the rear end frame (403) respectively.

6. The bow fast limit device for docking offshore wind power foundations according to claim 5, characterized in that: The hinge seat group (7) includes a first hinge seat (702) and a second hinge seat (703). The first hinge seat (702) is connected to the base frame (1). The second hinge seat (703) is connected to the bow (10). A central rotating rod (704) is further provided. The first hinge seat (702) is rotatably connected to the second hinge seat (703) through the central rotating rod (704). The second hinge seat (703) rotates synchronously with the central rotating rod (704). The central rotating rod (704) is provided with an outer extension (701). The lower end of the plug plate (5) is provided with an outer extension end (503). The outer extension end (503) is inserted between the base frame (1) and the end of the outer extension (701).

7. The bow quick limit device for docking offshore wind power foundations according to claim 1, characterized in that: A sub-arm (204) with one end hinged to the base frame (1) is provided on the outer side of the clamping arm (2). The sub-arm (204) is parallel to the clamping arm (2). A connecting arm (205) is further provided. The middle of the connecting arm (205) is hinged to the clamping arm (2). One end of the connecting arm (205) is hinged to the sub-arm (204). The first abutting wheel (201) is provided at the other end of the connecting arm (205).

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