A ship side thruster cover system

Abstract

This application relates to the field of ship structures, and in particular to a ship side thrust cover system, including a cover plate rotatably connected to the hull and capable of closing the side thrust tunnel opening. The cover plate's rotation point is located near the bow, and the rotation axis of the cover plate is perpendicular to the length direction of the hull. The cover plate flips towards the hull side. A shaft end block is coaxially fixedly connected to the rotation point of the cover plate. Two rotation limit blocks are provided in the rotation plane of the shaft end block, and the two rotation limit blocks can abut against the opposite sides of the shaft end block one by one. The hull is provided with a synchronous rotation mechanism that allows the cover plates at both ends of the side thrust tunnel to rotate synchronously in opposite directions. This makes it easier to control the overall hull without having to deliberately control the cover plate during side thrust and normal navigation.

Description

Technical Field

[0001] This application relates to the field of ship structures, and in particular to a ship side thrust cover system. Background Technology

[0002] To enable lateral movement and better steering control for larger vessels, a thruster tunnel is horizontally constructed at the bottom of both the bow and stern. A propeller is installed within the thruster tunnel, causing the water to flow towards one side of the hull, allowing the bow or stern to move laterally simultaneously or independently. During normal navigation, water flowing along the sides of the hull can easily enter the openings at both ends of the thruster tunnel, creating significant drag. To reduce this drag, cover plates are installed at both ends of the thruster tunnel to close it when thrusting is not needed, ensuring normal navigation.

[0003] An existing announcement number CN210191789U describes a multi-leaf grating-type side-push tunnel sealing device. Hydraulic cylinders on both sides of the side-push tunnel drive corresponding mechanisms to rotate several gratings located at the opening of the side-push tunnel around a horizontal line, thereby opening or closing the side-push tunnel.

[0004] Regarding the aforementioned technologies, each time a side thrust is performed, the hydraulic cylinder needs to be controlled to open or close the grille. Only after the grille is opened or closed can the hull begin the corresponding side thrust or normal navigation, making the overall operation of the hull quite inconvenient. Summary of the Invention

[0005] To facilitate the operation of the entire hull, this application provides a ship side thrust cover system.

[0006] The technical solution of the ship side thrust cover system provided in this application is as follows.

[0007] A ship's side thrust cover system includes a cover plate rotatably connected to the hull and capable of closing the opening of the side thrust tunnel. The rotation point of the cover plate is located near the bow of the ship, and the rotation axis of the cover plate is perpendicular to the length direction of the hull. The cover plate flips towards the hull side. A shaft end block is coaxially fixedly connected to the rotation point of the cover plate. Two rotation limit blocks are provided in the rotation plane of the shaft end block. The two rotation limit blocks can abut against the opposite sides of the shaft end block one by one. The hull is provided with a synchronous rotation mechanism that enables the cover plates at both ends of the side thrust tunnel to rotate synchronously in opposite directions.

[0008] By adopting the above technical solution, when the propeller in the side thrust tunnel sends water flow to one end of the side thrust tunnel, the water flow impacts the cover plate, causing the cover plate to open until the shaft end block abuts against a rotation limit block, preventing the cover plate from rotating any further. When the hull is moving forward normally, if the cover plate remains open at this time, the side water flow will impact the cover plate, causing the cover plate to close the side thrust tunnel. When the hull is no longer thrusting or sailing, the state of the cover plate does not need to be controlled, which can reduce the process of hull operation and facilitate hull control.

[0009] Optionally, the cover plate is provided with a group of several openings at both ends of the side-push tunnel. The co-rotation mechanism includes a cover plate gear coaxially fixedly connected to the rotation point of the cover plate. The cover plate gear meshes with a drive rack slidably connected to the inner wall of the ship. All drive racks corresponding to the same group of cover plates are provided with the same synchronizing rod. Both synchronizing rods are provided with a reversing rack slidably connected to the hull. The two reversing racks mesh with the same intermediate gear rotatably connected to the hull.

[0010] By adopting the above technical solution, when the propeller in the side thrust tunnel sends water flow towards one set of cover plates, the other set of cover plates can also rotate and open synchronously, so that the two sets of cover plates can open at the same time. Furthermore, during the side thrusting process, the water in the side thrust tunnel can be replenished in time as the propeller speed increases, which helps to increase the maximum thrust of the ship during side thrusting.

[0011] Optionally, the intermediate gear is coaxially fixedly connected to a gear rod, the gear rod is sleeved with a motor cylinder, a control component is fixedly connected to the outer circumference of the gear rod, the outer wall of the motor cylinder has an arc opening for the control component to pass through, the central angle corresponding to the arc opening is greater than or equal to the included angle between the two limit blocks, and the motor cylinder is connected to a cylinder motor that makes the motor cylinder rotate.

[0012] By adopting the above technical solution, when maintaining and inspecting the cover plate, it is necessary to close or open the side thrust tunnel while the ship is stationary. At this time, the motor cylinder can rotate in different directions as needed, so that the rotation of the motor cylinder can drive the control component to rotate at one end of the arc, thereby forcing the cover plate to maintain the closed or open state of the side thrust tunnel. During normal ship movement and side thrust, the rotation of the control component in the arc is not restricted, so that the cover plate can rotate accordingly under the impact of the water flow.

[0013] Optionally, each of the cover plates has an inner opening on the side away from its own rotation point, and an outer opening on the side of each cover plate close to its own rotation point. The inner walls of the inner and outer openings abut each other so that the two adjacent cover plates are tightly connected.

[0014] By adopting the above technical solution, even if there is a certain gap between the end faces of two adjacent cover plates, a more effective seal can be obtained between the two adjacent cover plates, so as to reduce the processing difficulty of the cover plates and the requirements for the assembly accuracy of the cover plates.

[0015] Optionally, the side thrust tunnel opening is connected to a trough formed in the hull, the projection of the side thrust tunnel in the plane of the trough is located inside the trough, the cover plate is rotatably connected to the inner wall of the trough, and the inner wall of the trough for the cover plate to rotate is horizontal.

[0016] By adopting the above technical solution, the shape of the cover plates can be kept consistent, which facilitates the production and replacement of the cover plates and makes it easier to process them. At the same time, the area of ​​the plate groove is larger than the area of ​​the side thrust tunnel opening, so as long as the cover plates have good sealing between them, water will not directly enter the side thrust tunnel during normal navigation of the hull. Even if water enters the surrounding plate groove through the small gap between the cover plate and the plate groove, the hull experiences less resistance because the cover plate is turned outward and the plate groove is shallow.

[0017] Optionally, the inner wall of the plate groove is provided with a limiting rod that can abut against the center of each cover plate.

[0018] By adopting the above technical solution, the cover plate is less likely to overturn, and it can also prevent some large debris from entering the side-push tunnel through the gap between two adjacent cover plates.

[0019] Optionally, a patch is provided at the position of the plate groove near the bow of the ship. The patch can fit into the inner wall of the outer opening of the cover plate closest to the bow in the same group, and the patch can be flush with the cover plate.

[0020] By adopting the above technical solution, after the cover plate closes the side thrust tunnel, the outer opening of the cover plate surface closest to the bow is less likely to cause significant resistance to the ship's navigation.

[0021] Optionally, the cover plate has several impact grooves on its side facing the center of the side-push tunnel. The impact grooves are located on the side of the cover plate with a large distance between the side edge and the rotation axis of the cover plate, and the length direction of the impact grooves is consistent with the rotation axis direction of the cover plate.

[0022] By adopting the above technical solution, the water flow delivered by the propeller in the side-push tunnel can better exert impact force on the cover plate during the outward flipping process, so that the cover plate can flip outward more smoothly.

[0023] Optionally, the impact groove is inclined, with the side of the impact groove away from the center of the side-push tunnel being away from the rotation axis of the cover plate.

[0024] By adopting the above technical solution, water flow can enter the impact groove more effectively during the cover plate flipping process, making it less likely for the impact force on the cover plate to decrease excessively during the flipping process.

[0025] Optionally, the cover plate is provided with a side plate at the side furthest from its own rotation axis, and the side plate is located on the surface of the cover plate facing the center of the side-push tunnel.

[0026] By adopting the above technical solution, when the direction of the water flow delivered by the cover plate and the propeller is kept parallel, the presence of the side plate ensures that the cover plate is always subjected to a large outward force, thereby allowing the cover plate to maintain the maximum opening angle.

[0027] In summary, this application includes at least one of the following beneficial effects:

[0028] 1. When there is no need to control the state of the cover plate when the hull is not being pushed or sailing, the process of hull operation can be reduced, which makes the hull operation easier;

[0029] 2. During the flipping process of the cover plate, the water flow can enter the impact groove more effectively, making it less likely for the impact force on the cover plate to decrease excessively during the flipping process. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the bottom of the hull of the ship in this application, and a structural schematic diagram of the hull section viewed from the bow end.

[0031] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 Is Figure 1 Based on this, partial cross-sections of the cover plate and the hull near the cover plate are performed to better show the structural schematic diagram of the cover plate's horizontal cross-section, the plate groove, and the side thrust tunnel;

[0033] Figure 4 yes Figure 3 Enlarged view at point B in the middle;

[0034] Figure 5 yes Figure 1 Enlarged view of point C.

[0035] Explanation of reference numerals in the attached drawings: 1. Side-push tunnel; 2. Cover plate; 3. Shaft end block; 31. Arc surface; 4. Hull; 41. Motor cylinder; 42. Control component; 43. Arc opening; 44. Cylinder motor; 45. Inner opening; 46. Outer opening; 47. Patch block; 48. Impact groove; 49. Side plate; 5. Rotation limiting block; 51. Plate groove; 52. Cover plate gear; 53. Drive rack; 54. Synchronizing rod; 55. Reversing rack; 56. Intermediate gear; 57. Co-rotation mechanism; 58. Limiting rod; 59. Gear rod. Detailed Implementation

[0036] The present application will be further described in detail below with reference to the accompanying drawings.

[0037] This application discloses a ship's side thrust cover system, referring to... Figure 1 The system includes a cover plate 2 installed at the opening of the side thrust tunnel 1. A horizontal hull 4 has a slot 51 connected to the side thrust tunnel 1. The slots are located at both ends of the side thrust tunnel 1. The slots 51 are rectangular, with the minimum side length of the slot 51 being greater than the diameter of the side thrust tunnel 1, resulting in an area of ​​the slot 51 greater than the area of ​​the side thrust tunnel 1. A set of cover plates 2 is rotatably connected between the upper and lower horizontal inner walls of each slot 51 to seal the side thrust tunnel 1.

[0038] Reference Figure 1 and Figure 2 Several cover plates 2 are evenly distributed along the horizontal length of the upper surface of the groove 51 in each group. The rotation axis of the cover plate 2 is vertical and located near the bow of the ship. At the same time, the rotation axis of the cover plate 2 is close to the side of the cover plate 2 facing the side thrust tunnel 1. When the propeller in the side thrust tunnel 1 sends water flow to the cover plate 2, it makes it easier for the cover plate 2 to flip outward of the hull 4 until the length direction of the cover plate 2 and the side thrust tunnel 1 are parallel. When all the cover plates 2 are closed, the cover plate 2 and the outer wall of the hull 4 are close to flush, so as to reduce the resistance of the cover plate 2 to the navigation of the hull 4. Each cover plate 2 is fixedly connected to a shaft end block 3 located inside the hull 4 at its rotation point. The hull 4 has a set of two rotation limiting blocks 5 fixed inside each shaft end block 3. The two rotation limiting blocks 5 in the same set are located in the same horizontal plane and are perpendicular to each other. The length direction of one rotation limiting block 5 in the same set is parallel to the length direction of the side-push tunnel 1. The two rotation limiting blocks 5 in the same set are fixed together. The end face of the shaft end block 3 near its own rotation point is arc-shaped with the rotation axis of the shaft end block 3 as the center line. This makes the cover plate 2 reach the maximum opening angle when the shaft end block 3 abuts against the rotation limiting block 5 whose length direction is parallel to the length direction of the side-push tunnel 1, that is, the cover plate 2 is perpendicular to the opening end face of the side-push tunnel 1.

[0039] Reference Figure 3 and Figure 4A vertical limiting rod 58 is fixedly connected between the upper and lower surfaces of the groove 51. One limiting rod 58 is provided for each cover plate 2, and the center of the cover plate 2 can abut against the corresponding limiting rod 58. Each cover plate 2 has a vertical outer opening 46 on the surface facing the outside of the hull 4. The outer opening 46 is located on the vertical side of the cover plate 2 close to its own rotation axis. The cover plate 2 has a vertical inner opening 45 on the surface facing the side-push tunnel 1. The inner opening 45 is located on the vertical side of the cover plate 2 away from the outer opening 46. The inner walls of the inner opening 45 and the outer opening 46 of two adjacent cover plates 2 can be tightly attached. The inner wall side of the outer opening 46 and the inner opening 45 away from the center of the corresponding cover plate 2 is formed with an arc surface 31, so that the distance between the ends of the two cover plates 2 can be smaller when the outer opening 46 and the inner opening 45 of the two adjacent cover plates 2 rotate and approach each other. A vertical patch 47 is fixedly connected to the inner wall of the trough 51. The patch 47 can be closely attached to the inner wall of the outer opening 46 of the cover plate 2 closest to the bow in the same group. When the cover plate 2 is closed, the patch 47 is flush with the outer wall of the cover plate 2, so that the outer opening 46 of the cover plate 2 closest to the bow in the same group is less likely to cause great resistance to the navigation of the hull 4.

[0040] Reference Figure 4 Several vertical impact grooves 48 are evenly distributed on the surface of the cover plate 2 facing the side-push tunnel 1. The horizontal cross-section of the impact grooves 48 is approximately U-shaped. The impact grooves 48 are located on the side of the cover plate 2 with the largest distance between its own rotation axis and its vertical side. The impact grooves 48 are inclined on the horizontal plane, and the distance between the impact grooves 48 and the rotation axis of the cover plate 2 is larger the further away from the side of the cover plate 2 facing the side-push tunnel 1. This allows the cover plate 2 to be opened more smoothly under the impact of the water flow sent by the propeller in the side-push tunnel 1. At the same time, a vertical side plate 49 is fixedly connected to the side of the cover plate 2 facing the side-push tunnel 1. The side plate 49 is located on the vertical side of the cover plate 2 with the largest distance between its corresponding side and its own rotation axis. The side plate 49 can be perpendicular to the cover plate 2, so that when the cover plate 2 is opened to be parallel to the direction of the water flow sent out in the side-push tunnel 1, the side plate 49 can still be continuously impacted by the water flow, so that the cover plate 2 can effectively maintain the maximum opening angle.

[0041] Reference Figure 1 and Figure 2 The hull 4 is equipped with a synchronous rotation mechanism 57 that enables the cover plates 2 at both ends of the side thrust tunnel 1 to rotate synchronously in opposite directions. The synchronous rotation mechanism 57 includes a cover plate gear 52 coaxially fixedly connected to the rotation point of the cover plate 2. The cover plate gear 52 is located inside the hull 4 and meshes with a drive rack 53 that is slidably connected inside the hull 4 along the length direction of the side thrust tunnel 1. A guide rail can be provided inside the hull 4 to allow the drive rack 53 to move stably. A synchronizing rod 54 is fixedly connected to one end of all the drive racks 53 corresponding to the same group of cover plates 2. A reversing rack 55 is fixedly connected to the side of two synchronizing rods 54 that are close to each other. The reversing rack 55 is slidably connected inside the hull 4 along the length direction of the side thrust tunnel 1.

[0042] Reference Figure 1 and Figure 5 Two reversing racks 55 mesh with an intermediate gear 56 on their adjacent sides, so that when the propeller in the side thrust tunnel 1 sends water flow towards a set of cover plates 2, the two sets of cover plates 2 can rotate synchronously in opposite directions, so as to flip over towards the outside of the hull 4 at the same time. A barrel motor 44 is detachably connected to the inside of the hull 4 by bolts. The output shaft of the barrel motor 44 is coaxially fixedly connected to a vertical motor barrel 41. A gear rod 59 is sleeved at the bottom end of the motor barrel 41. The bottom end of the gear rod 59 is coaxially fixedly connected to the upper end face of the intermediate gear 56. A control component 42 is fixedly connected to the outer circumference of the gear rod 59. An arc opening 43 is opened around the axis of the motor barrel 41. The central angle of the arc opening 43 can be 90 degrees or slightly greater than 90 degrees. The control component 42 passes through the arc opening 43.

[0043] During normal navigation of the hull 4, each end of the arc 43 corresponds to one of the two rotation limit blocks 5. When the shaft end block 3 abuts against one of the rotation limit blocks 5, the control component 42 can be close to the end of the arc 43, allowing the control component 42 to rotate normally within the arc 43 without being affected during the opening and closing of the cover plate 2. When the hull 4 is in a maintenance-maintained stationary state, in order to keep the cover plate 2 open or closed, the cylinder motor 44 is connected to an external power source, causing the motor cylinder 41 to rotate. This causes the inner wall of one end of the arc 43 to abut against the control component 42, causing the intermediate gear 56 to rotate accordingly, thus ensuring that the cover plate 2 remains stably open or closed.

[0044] The implementation principle of a ship side thrust cover system according to an embodiment of this application is as follows: when the hull 4 needs to be pushed to the side, the propeller in the side thrust tunnel 1 sends water flow toward a set of cover plates 2, causing the corresponding set of cover plates 2 to flip outwards from the hull 4. Under the action of the cover plate gear 52, the driving rack 53, the synchronizing rod 54, the reversing rack 55 and the intermediate gear 56, the two sets of cover plates 2 can rotate synchronously to open synchronously.

[0045] When the hull 4 is moving forward normally, the water on both sides of the hull exerts an impact force on the two sets of cover plates 2, keeping the two sets of cover plates 2 closed, so that the side thrust tunnel 1 does not easily cause great resistance to the normal navigation of the hull 4.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ship's side thrust cover system, comprising a cover plate (2) rotatably connected to the hull (4) and capable of closing the opening of a side thrust tunnel (1), characterized in that: The rotation point of the cover plate (2) is located near the bow of the ship. The rotation axis of the cover plate (2) is perpendicular to the length direction of the hull (4). The cover plate (2) flips towards the outside of the hull (4). A shaft end block (3) is coaxially fixedly connected to the rotation point of the cover plate (2). Two rotation limit blocks (5) are provided in the rotation plane of the shaft end block (3). The two rotation limit blocks (5) can abut against the opposite sides of the shaft end block (3) one by one. The hull (4) is provided with a synchronous rotation mechanism (57) that makes the cover plates (2) at both ends of the side thrust tunnel (1) rotate synchronously in opposite directions. The cover plate (2) corresponds to The two ends of the side-push tunnel (1) are each provided with a set of several rotating mechanisms (57), including a cover plate gear (52) coaxially fixedly connected to the rotation point of the cover plate (2). The cover plate gear (52) meshes with a drive rack (53) slidably connected to the inner wall of the hull (4). All the drive racks (53) corresponding to the same set of cover plates (2) are provided with the same synchronizing rod (54). Both synchronizing rods (54) are provided with a reversing rack (55) slidably connected to the hull (4). The two reversing racks (55) mesh with the same intermediate gear (56) rotatably connected to the hull (4).

2. A ship side thrust cover system according to claim 1, characterized in that: The intermediate gear (56) is coaxially fixedly connected to a gear rod (59), the gear rod (59) is sleeved with a motor cylinder (41), the outer circumference of the gear rod (59) is fixedly connected to a control component (42), the outer wall of the motor cylinder (41) is provided with an arc opening (43) for the control component (42) to pass through, the central angle corresponding to the arc opening (43) is greater than or equal to the included angle between the two limit blocks (5), and the motor cylinder (41) is connected to a cylinder motor (44) that makes the motor cylinder (41) rotate.

3. A ship side thrust cover system according to claim 1, characterized in that: Each of the cover plates (2) has an inner opening (45) on the side away from its own rotation point, and an outer opening (46) on the side close to its own rotation point. The inner walls of the inner opening (45) and the outer opening (46) abut against each other so that the two adjacent cover plates (2) are tightly connected.

4. A ship side thrust cover system according to claim 3, characterized in that: The opening of the side thrust tunnel (1) is connected to a trough (51) on the hull (4). The projection of the side thrust tunnel (1) on the plane of the trough (51) is located inside the trough (51). The cover plate (2) is rotatably connected to the inner wall of the trough (51). The inner wall of the trough (51) for the cover plate (2) to rotate is horizontal.

5. A ship side thrust cover system according to claim 4, characterized in that: The inner wall of the groove (51) is provided with a limiting rod (58) that can abut against the center of the cover plate (2) for each cover plate (2).

6. A ship side thrust cover system according to claim 4, characterized in that: The plate groove (51) is provided with a patch (47) near the bow of the ship. The patch (47) can fit into the inner wall of the outer opening (46) of the cover plate (2) closest to the bow in the same group. The patch (47) can be flush with the cover plate (2).

7. A ship side thrust cover system according to claim 1, characterized in that: The cover plate (2) has several impact grooves (48) on the side facing the center of the side-push tunnel (1). The impact grooves (48) are located on the side of the cover plate (2) with a large distance between the side and the rotation axis of the cover plate (2). The length direction of the impact grooves (48) is consistent with the rotation axis direction of the cover plate (2).

8. A ship side thrust cover system according to claim 7, characterized in that: The impact groove (48) is inclined, and the side of the impact groove (48) away from the center of the side-push tunnel (1) is away from the rotation axis of the cover plate (2).

9. A ship side thrust cover system according to claim 8, characterized in that: The cover plate (2) has a side plate (49) at the side furthest from its own rotation axis. The side plate (49) is located on the surface of the cover plate (2) facing the center of the side-push tunnel (1).

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