Multi-degree-of-freedom liftable offshore wave-compensated gangway platform

Abstract

The utility model discloses a kind of multi-degree-of-freedom liftable offshore wave compensation gangway platform, belong to ship engineering technical field, including lifting structure, rotary support structure, telescopic trestle structure and wave compensation structure;Rotary support structure includes support seat, fixedly installed with mandrel on support seat, heavy-duty thrust bearing is sleeved on mandrel, and heavy-duty thrust bearing is fixedly installed on support seat, and the load end surface of heavy-duty thrust bearing is fixedly connected with rotary gear disc, and rotary gear disc is rotatably connected with mandrel by first ball bearing, rotary drive assembly is equipped on support seat, rotary drive assembly is used to drive rotary gear disc rotation, rotary gear disc is fixedly connected with rotary shaft sleeve, and rotary shaft sleeve is rotatably connected with mandrel by second ball bearing, and the top end of rotary shaft sleeve is fixedly installed with boarding platform. It has the lifting, rotation and telescopic function of gangway platform, can be adapted to the lapping of fan platform of different height.

Description

Technical Field

[0001] This utility model relates to the field of marine engineering equipment technology, and more specifically, to a multi-degree-of-freedom liftable wave-compensating gangway platform. Background Technology

[0002] Wind turbines are typically installed on the sea surface. Maintenance personnel usually need to travel by boat to reach the turbine locations for inspections and maintenance. To facilitate movement between the boat and the turbine platform, existing maintenance vessels are typically equipped with trestle bridges for connecting the turbine platform. However, these existing trestle bridges are generally fixed, with no adjustable height or length, making them unsuitable for turbine platforms of varying heights. This results in low flexibility and inconvenience. Furthermore, transferring items requires manual labor or the use of trolleys, which is time-consuming, labor-intensive, and extremely difficult, especially in rough seas where the risk of items falling into the sea is very high. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-degree-of-freedom liftable wave-compensated gangway platform for marine applications, aiming to solve at least one of the technical problems existing in the prior art. To achieve the above objective, the technical solution adopted is as follows:

[0004] A multi-degree-of-freedom liftable wave-compensated gangway platform for marine use includes a lifting structure, a slewing support structure, a telescopic trestle structure, and a wave compensation structure.

[0005] The lifting structure includes a base, on which four square-arranged guide columns are fixedly installed. Each guide column is slidably fitted with a guide bushing. A lifting platform is fixedly connected between the four guide bushings. A lifting cylinder is installed on the base to drive the lifting platform to move along the guide columns.

[0006] The slewing support structure includes a support base, which is fixedly installed on the lifting platform. A spindle is fixedly installed on the support base, and a heavy-duty thrust bearing is fitted on the spindle. The heavy-duty thrust bearing is fixedly installed on the support base. A slewing gear disk is fixedly connected to the bearing end face of the heavy-duty thrust bearing, and the slewing gear disk is rotatably connected to the spindle through a first ball bearing. A slewing drive assembly is provided on the support base to drive the slewing gear disk to rotate. A slewing bushing is fixedly connected to the slewing gear disk, and the slewing bushing is rotatably connected to the spindle through a second ball bearing. A boarding platform is fixedly installed on the top of the slewing bushing.

[0007] The telescopic trestle structure includes a main bridge, which is rotatably connected to the front of the boarding platform. A telescopic bridge is slidably installed inside the main bridge. A telescopic drive assembly is installed between the main bridge and the telescopic bridge. The telescopic drive assembly is used to drive the telescopic bridge to extend and retract relative to the main bridge.

[0008] The wave compensation structure includes a pitch cylinder, an attitude sensor, and a controller. The cylinder body of the pitch cylinder is hinged to the wall of the slewing shaft, and the telescopic rod of the pitch cylinder is hinged to the main bridge. The attitude sensor is installed on the boarding platform to detect the attitude data of the boarding platform in real time and send it to the controller. The controller controls the extension and retraction of the pitch cylinder according to the received attitude data to keep the main bridge horizontal in the forward and backward directions.

[0009] Preferably, the lifting cylinder is located in the middle of the four guide columns, the cylinder body of the lifting cylinder is connected to the base, and the piston rod of the lifting cylinder is connected to the lifting platform.

[0010] Preferably, the rotary drive assembly includes a rotary motor, and a drive gear is mounted on the output shaft of the rotary motor, the drive gear being meshed with a rotary gear disc.

[0011] Preferably, the front side of the boarding platform is provided with two sets of hinge holes spaced apart, and the end of the main bridge is provided with two sets of hinge holes spaced apart, which correspond one-to-one with the two sets of hinge holes on the boarding platform. The corresponding two sets of hinge holes are connected by pins.

[0012] Preferably, the telescopic drive assembly includes a telescopic motor, a drive wheel, a driven wheel, and a timing belt. The drive wheel is installed at one end of the main axle, the driven wheel is installed at the other end of the main axle, the timing belt is wound between the drive wheel and the driven wheel, and the timing belt is connected to the telescopic axle. The telescopic motor is connected to the drive wheel via a transmission.

[0013] Preferably, the telescopic bridge is provided with a hook at its front end.

[0014] Preferably, the base is fixedly installed on the ship's deck.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model discloses a multi-degree-of-freedom liftable wave-compensated gangway platform for the sea. It has lifting, rotation, and forward / backward extension functions, which can adapt to the connection of wind turbine platforms of different heights, making it highly flexible and easy to use. It has a wave compensation function, which provides sway compensation for the gangway platform in wave environments, improving stability and ensuring the safe transfer of maintenance personnel and goods. It also has a hoisting function, which can meet the needs of transferring heavy items or items when the sea is rough and personnel cannot pass through, reducing labor costs and labor intensity, and ensuring the safe transfer of goods. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the lifting structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the rotary support structure of this utility model.

[0021] In the diagram: 1. Base; 2. Guide column; 3. Guide bushing; 4. Lifting platform; 5. Support seat; 6. Spindle; 7. Heavy-duty thrust bearing; 8. Bearing housing; 9. Rotary gear disc; 10. First ball bearing; 11. Rotary bushing; 12. Second ball bearing; 13. Boarding platform; 14. Rotary motor; 15. Drive gear; 16. Main bridge; 17. Telescopic bridge; 18. Hook; 19. Pitch cylinder. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 As shown, a preferred embodiment of this utility model provides a multi-degree-of-freedom liftable wave-compensated gangway platform, including a lifting structure, a slewing support structure, a telescopic trestle structure, and a wave compensation structure.

[0025] like Figure 2As shown, the lifting structure includes a base 1, which is fixedly installed on the deck of the maintenance vessel. Four smooth guide columns 2 are vertically fixedly installed on the base 1. The four guide columns 2 are arranged in a square shape. Each guide column 2 is slidably fitted with a guide sleeve 3. A lifting platform 4 is fixedly connected between the four guide sleeves 3, that is, the lifting platform 4 can slide up and down along the guide columns 2 through the guide sleeves 3.

[0026] Furthermore, a lifting cylinder (not shown in the figure) is provided in the middle of the four guide columns 2. Specifically, the cylinder body of the lifting cylinder is hinged to the base 1, and the piston rod of the lifting cylinder is hinged to the bottom surface of the lifting platform 4. The extension and retraction of the lifting cylinder can drive the lifting platform 4 to slide up and down.

[0027] like Figure 3 As shown, the slewing support structure includes a support base 5, which is fixedly mounted on the lifting platform 4. A spindle 6 is vertically fixedly mounted on the support base 5, and a heavy-duty thrust bearing 7 is fitted onto the spindle 6. The heavy-duty thrust bearing 7 is fixedly mounted on the support base 5 via a bearing seat 8. A slewing gear disk 9 is fixedly connected to the bearing end face of the heavy-duty thrust bearing 7. The slewing gear disk 9 is disc-shaped with a ring of external teeth on its outer circumference and a bearing mounting hole at its center. A first ball bearing 10 is installed in the bearing mounting hole, and the slewing gear disk 9 is rotatably connected to the spindle 6 via the first ball bearing 10. A slewing sleeve 11 is fixedly connected to the slewing gear disk 9. Specifically, the slewing sleeve 11 is fitted onto the spindle 6 and is rotatably connected to the spindle via a second ball bearing 12. In this embodiment, there are two second ball bearings 12, arranged at intervals along the length of the spindle 6. A boarding platform 13 is fixedly mounted on the top of the slewing sleeve 11.

[0028] Furthermore, the support base 5 is provided with a rotary drive assembly, which includes a rotary motor 14. The rotary motor 14 is fixedly mounted on the support base 5. A drive gear 15 is mounted on the output shaft of the rotary motor 14. The drive gear 15 is meshed with the rotary gear disk 9. The rotary motor 14 can drive the rotary gear disk 9 to rotate and drive the boarding platform 13 to rotate through the rotary bushing 11.

[0029] The telescopic trestle structure includes a main bridge 16, which is rotatably connected to the front of the boarding platform 13. Specifically, the front of the boarding platform 13 is provided with two sets of hinge holes at intervals, and the end of the main bridge 16 is provided with two sets of hinge holes at intervals, which correspond one-to-one with the two sets of hinge holes on the boarding platform 13. The corresponding two sets of hinge holes are connected by a pin, that is, the main bridge 16 can rotate up and down around the pin.

[0030] A telescopic bridge 17 is slidably installed within the main bridge 16. The telescopic bridge 17 can be completely retracted into the main bridge 16 or slide out of the main bridge 16 to increase the overall length. A telescopic drive assembly (not shown in the figure) is provided between the main bridge 16 and the telescopic bridge 17, including a telescopic motor, a driving wheel, a driven wheel, and a synchronous belt. The driving wheel is installed at one end of the main bridge 16, and the driven wheel is installed at the other end of the main bridge 16. The synchronous belt is wound between the driving wheel and the driven wheel and is connected to the telescopic bridge 17. The telescopic motor is driven by the driving wheel. The telescopic motor drives the driving wheel to rotate, which in turn drives the synchronous belt to rotate, causing the synchronous belt to extend the telescopic bridge 17 out of the main bridge 16 or retract it into the main bridge 16.

[0031] Furthermore, the telescopic bridge 17 is equipped with a hook 18 at its front end for lifting items.

[0032] Furthermore, guardrails (not shown in the figure) are provided on both sides of the main bridge 16 and on both sides of the telescopic bridge 17.

[0033] The wave compensation structure includes a pitch cylinder 19, an attitude sensor, and a controller. The cylinder body of the pitch cylinder 19 is hinged to the wall of the slewing bushing 11, and the telescopic rod of the pitch cylinder 19 is hinged to the main bridge 16. The attitude sensor is installed on the boarding platform 13 and electrically connected to the controller. The attitude sensor is used to detect the attitude data of the boarding platform 13 in real time and send it to the controller. The controller controls the extension and retraction of the pitch cylinder 19 according to the received attitude data, so that the main bridge 16 remains horizontal in the forward and backward directions.

[0034] When using the aforementioned gangway platform, the maintenance vessel equipped with the gangway platform is moored at a suitable location around the wind turbine platform. Based on the height of the wind turbine platform, the height of the boarding platform 13 is adjusted by controlling the extension and retraction of the lifting cylinders, ensuring that the boarding platform 13 is approximately on the same plane as the wind turbine platform. Then, the boarding platform 13 is rotated to a suitable angle by controlling the rotary motor 14, extending the main bridge 16 towards the wind turbine platform. If the front end of the main bridge 16 can overlap the wind turbine platform, it can be directly overlapped. If the length of the main bridge 16 is insufficient, the telescopic bridge 17 is extended beyond the main bridge 16 by controlling the telescopic motor, and its end is overlapped on the wind turbine platform. Afterwards, maintenance personnel can pass through and transfer items.

[0035] If there are waves on the sea surface and the maintenance vessel sways, the attitude sensor can detect the attitude data of the boarding platform and send it to the controller. The controller controls the extension and retraction of the pitch cylinder 19 based on the received attitude data, so that the main bridge 16 remains horizontal in the forward and backward directions, ensuring the safety of personnel passage and the transfer of goods.

[0036] The gangway platform has lifting, rotation and forward and backward extension functions. When transferring heavy items between the maintenance vessel and the wind turbine platform or when personnel cannot pass due to large sea waves, the items can be lifted by the hook at the front end of the telescopic bridge 17, which facilitates the transportation of items.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-degree-of-freedom liftable wave-compensated gangway platform for marine applications, characterized in that, This includes lifting structures, slewing support structures, telescopic trestle structures, and wave compensation structures; The lifting structure includes a base, on which four square-arranged guide columns are fixedly installed. Each guide column is slidably fitted with a guide bushing. A lifting platform is fixedly connected between the four guide bushings. A lifting cylinder is installed on the base to drive the lifting platform to move along the guide columns. The slewing support structure includes a support base, which is fixedly installed on the lifting platform. A spindle is fixedly installed on the support base, and a heavy-duty thrust bearing is fitted on the spindle. The heavy-duty thrust bearing is fixedly installed on the support base. A slewing gear disk is fixedly connected to the bearing end face of the heavy-duty thrust bearing, and the slewing gear disk is rotatably connected to the spindle through a first ball bearing. A slewing drive assembly is provided on the support base to drive the slewing gear disk to rotate. A slewing bushing is fixedly connected to the slewing gear disk, and the slewing bushing is rotatably connected to the spindle through a second ball bearing. A boarding platform is fixedly installed on the top of the slewing bushing. The telescopic trestle structure includes a main bridge, which is rotatably connected to the front of the boarding platform. A telescopic bridge is slidably installed inside the main bridge. A telescopic drive assembly is installed between the main bridge and the telescopic bridge. The telescopic drive assembly is used to drive the telescopic bridge to extend and retract relative to the main bridge. The wave compensation structure includes a pitch cylinder, an attitude sensor, and a controller. The cylinder body of the pitch cylinder is hinged to the wall of the slewing shaft, and the telescopic rod of the pitch cylinder is hinged to the main bridge. The attitude sensor is installed on the boarding platform to detect the attitude data of the boarding platform in real time and send it to the controller. The controller controls the extension and retraction of the pitch cylinder according to the received attitude data to keep the main bridge horizontal in the forward and backward directions.

2. The multi-degree-of-freedom liftable wave-compensated gangway platform according to claim 1, characterized in that, The lifting cylinder is located in the middle of the four guide columns. The cylinder body of the lifting cylinder is connected to the base, and the piston rod of the lifting cylinder is connected to the lifting platform.

3. The multi-degree-of-freedom liftable wave-compensated gangway platform according to claim 1, characterized in that, The rotary drive assembly includes a rotary motor, and a drive gear is mounted on the output shaft of the rotary motor. The drive gear meshes with a rotary gear disc.

4. The multi-degree-of-freedom liftable wave-compensated gangway platform according to claim 1, characterized in that, The boarding platform has two sets of hinge holes spaced apart on its front side, and the main bridge has two sets of hinge holes spaced apart at its end, which correspond one-to-one with the two sets of hinge holes on the boarding platform. The corresponding sets of hinge holes are connected by pins.

5. A multi-degree-of-freedom liftable wave-compensated gangway platform for marine use according to claim 1, characterized in that, The telescopic drive assembly includes a telescopic motor, a drive wheel, a driven wheel, and a synchronous belt. The drive wheel is installed at one end of the main bridge, the driven wheel is installed at the other end of the main bridge, the synchronous belt is wound between the drive wheel and the driven wheel, and the synchronous belt is connected to the telescopic bridge. The telescopic motor is connected to the drive wheel via a transmission.

6. A multi-degree-of-freedom liftable wave-compensated gangway platform for marine use according to claim 1, characterized in that, The telescopic bridge is equipped with a hook at its front end.

7. A multi-degree-of-freedom liftable wave-compensated gangway platform for marine use according to claim 1, characterized in that, The base is fixedly installed on the ship's deck.

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