Expansion type watertight vibration reduction assembly for ship and application of expansion type watertight vibration reduction assembly on propelling equipment under waterline

Abstract

The invention belongs to the technical field of vibration reduction, and particularly relates to a marine expansion type watertight vibration reduction assembly and application of the marine expansion type watertight vibration reduction assembly to underwater propulsion equipment. The expansion type watertight vibration reduction assembly for the ship comprises a mounting base, an elastic piece, a fixing piece and a supporting piece. The elastic piece is connected with the fixing piece; one end of the mounting base is connected with the elastic piece, and the other end of the mounting base is used for being connected with a steering oar; the fixing piece comprises a base trunk and a gland flange. The marine expansion type watertight vibration reduction assembly has excellent sealing and vibration reduction effects, the structure of the marine expansion type watertight vibration reduction assembly is simple, the construction difficulty and the workload during installation can be greatly reduced, meanwhile, the size of the marine expansion type watertight vibration reduction assembly can adapt to different forms of steering oar propellers to be adjusted, and the application range of the marine expansion type watertight vibration reduction assembly is wide. And the method has relatively high flexibility and adaptability.

Description

Technical Field

[0001] This invention belongs to the field of vibration reduction technology, specifically relating to a marine expandable watertight vibration reduction component and its application in underwater propulsion equipment. Background Technology

[0002] Currently, the propeller is the core component of marine power equipment. The azimuth thruster is widely used in many fields such as harbor tugboats, fireboats, workboats (cranes, research vessels, open-body barges, etc.), and ferries. The azimuth thruster can rotate 360° in any direction through the slewing mechanism, integrating propulsion and steering functions, so that the ship can obtain the maximum thrust in any direction. It is flexible, reliable, convenient and quick to operate, and can be used as the main and auxiliary propulsion system and dynamic positioning system of the ship.

[0003] The installation of the propeller is one of the most crucial steps in shipbuilding, impacting the ship's future operation and use. Azimuth thrusters, with their exceptional maneuverability and high-efficiency propulsion, are the preferred choice for various special-purpose vessels and those requiring frequent berthing. However, the sealing of azimuth or podded propellers must simultaneously address multiple challenges, including multi-degree-of-freedom dynamic motion, harsh underwater environments, and high pressure differentials. The complexity of the dynamic sealing interface has always been a major challenge in installation and construction. Traditional sealing solutions rely on adding a groove and O-ring to the cofferdam flange panel to achieve a seal, which requires high precision in the cofferdam base, is difficult to manufacture, and cannot effectively absorb or mitigate propeller vibration.

[0004] Therefore, there is an urgent need to develop a marine expandable watertight vibration damping component that can effectively overcome the above problems, reduce propeller vibration, maintain excellent sealing performance, and reduce the construction difficulty of the installation base. Summary of the Invention

[0005] This invention aims to provide a marine expandable watertight vibration damping component and its application in underwater propulsion equipment. The marine expandable watertight vibration damping component of this invention has excellent sealing and vibration damping effects. Furthermore, the component has a simple structure, significantly reducing construction difficulty and installation workload. Additionally, the device size can be adjusted to accommodate different types of rudder propellers, exhibiting strong flexibility and adaptability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a marine inflatable watertight vibration damping component, comprising a mounting base, an elastic element, a fixing element, and a supporting element; The elastic element is connected to the fixed element; one end of the mounting base is connected to the elastic element, and the other end is used to connect to the propeller. The fasteners include a base cofferdam and a pressure flange; The base enclosure includes two parallel first plates and a second plate, and a third plate perpendicular to the first and second plates; the third plate is connected to one end of the first plate and to the middle of the second plate; the first plate and the pressure flange are fixedly connected. One end of the support member is used to connect to the outer plate of the hull, and the other end is used to connect to the second plate surface; The second plate is connected to the reinforcing members of the hull structure.

[0007] The marine expandable watertight vibration damping assembly of the present invention is fixedly connected to the hull body plate and the reinforcing members of the hull structure through the support members, so as to realize the fixed installation of the marine expandable watertight vibration damping assembly on the hull.

[0008] The marine expansion-type watertight vibration damping assembly of this invention uses mounting bolts to tightly connect the gland flange to the base cofferdam. This fastening method applies uniform pressure to the elastic element, allowing it to fully deform and conform to the connection surface, further enhancing the sealing effect and preventing seal failure due to loose bolts.

[0009] The marine expandable watertight vibration damping assembly of this invention, through its structural design of the relative positions of the gland flange, base cofferdam, and mounting base, forms a specific buffer space through the cooperation of each component. When the marine expandable watertight vibration damping assembly is subjected to vibration impact, it can alleviate vibration through slight displacement and deformation, effectively assisting in vibration damping. The specific structural design of the marine expandable watertight vibration damping assembly of this invention can effectively overcome the problems of traditional sealing solutions, such as high precision requirements for the base cofferdam, high construction and processing difficulty, and inability to effectively absorb and reduce propeller vibration, significantly enhancing the applicability of the marine expandable watertight vibration damping assembly.

[0010] The mounting base, base enclosure, pressure flange, and support components described in this invention can be made of materials with corrosion resistance, such as stainless steel.

[0011] As one embodiment of the marine expansion watertight vibration damping assembly of the present invention, the gland flange is provided with an adjusting shim that is perpendicularly connected to the gland flange, and the adjusting shim is used to adjust and lock the elastic element.

[0012] In one embodiment of the marine expansion watertight vibration damping assembly of the present invention, the adjusting shim is connected to the gland flange by bolts.

[0013] This invention utilizes bolts and adjusting shims to fine-tune the gaps between connecting components such as fasteners, elastic elements, and mounting bases. If a poor sealing effect is detected during installation or use, the relative positions and pressures between components can be changed by adjusting the bolts and adjusting shims to ensure that the elastic element is always in an optimal sealing state.

[0014] In one embodiment of the marine expansion watertight vibration damping assembly of the present invention, the size of the adjusting shim is adapted to the elastic element.

[0015] In one embodiment of the marine expansion watertight vibration damping assembly of the present invention, the gland flange forms a receiving cavity with the second plate surface and the third plate surface.

[0016] In one embodiment of the marine expandable watertight vibration damping assembly of the present invention, the elastic element is disposed within the accommodating cavity; the size of the elastic element is adapted to the accommodating cavity.

[0017] As one embodiment of the marine expansion watertight vibration damping component of the present invention, the elastic element includes at least two rubber washers, which are stacked; one end of the mounting base is connected between the two rubber washers.

[0018] This invention uses rubber gaskets as the elastic component. The rubber gasket material itself has excellent elasticity and sealing properties, capable of filling tiny gaps between components, effectively preventing the intrusion of media such as seawater, preventing water leakage into the hull, ensuring a dry environment in the hull compartments, and avoiding equipment damage due to water immersion. Simultaneously, the rubber gasket also possesses shock-absorbing properties. Due to the elasticity of the rubber material, during ship navigation, when the propeller vibrates, the rubber gasket can absorb and buffer the vibration energy, reducing the transmission of vibration to the hull structure, and lowering noise and structural fatigue damage caused by propeller vibration.

[0019] As one embodiment of the marine expansion watertight vibration damping component of the present invention, the elastic element may also be made of other elastic materials.

[0020] As one embodiment of the marine expansion watertight vibration damping assembly of the present invention, the elastic element includes three rubber gaskets.

[0021] As one embodiment of the marine expandable watertight vibration damping assembly of the present invention, the mounting base includes a mounting plate and an adjusting pressure plate; the mounting plate is arranged parallel to the hull, and one end of the mounting plate is connected between two rubber gaskets; the adjusting pressure plate is vertically and movably arranged on the mounting plate for adjusting and locking the rubber gaskets.

[0022] In this invention, one end of the mounting plate is connected between two rubber gaskets. The rubber gasket located under the mounting plate can be pressed by the weight of the propeller body itself, while the rubber gasket located on the mounting plate is adjusted and pressed by the gasket set on the gland flange, which effectively blocks the intrusion of media such as seawater and prevents water from seeping into the hull.

[0023] In one embodiment of the marine expandable watertight vibration damping assembly of the present invention, the mounting plate and the adjusting plate are connected by bolts. The bolts lock the adjusting plate onto the rubber gasket, thus achieving a sealing function.

[0024] In one embodiment of the marine expansion watertight vibration damping assembly of the present invention, the length of the adjusting pressure plate is greater than or equal to the total height of all rubber gaskets.

[0025] This invention also claims protection for the application of the aforementioned marine expandable watertight vibration damping assembly in underwater propulsion equipment. The underwater propulsion equipment includes, but is not limited to, propeller-type propulsion units, ducted propulsion units, waterjet propulsion units, and biomimetic propulsion units. Compared with the prior art, the present invention has the following beneficial effects: (1) The marine expansion watertight vibration damping assembly of the present invention, through the structural design of the relative positional relationship between the gland flange, the base cofferdam and the mounting base, forms a certain buffer space through the cooperation between the components, which plays an effective auxiliary role in vibration damping. At the same time, combined with the elasticity and sealing performance of the elastic element, it can effectively block the intrusion of seawater and other media while effectively enhancing the vibration damping effect, and prevent water leakage into the hull.

[0026] (2) The structure of the marine expansion watertight vibration damping component of the present invention is simple, which can greatly reduce the difficulty of construction and the workload during installation. At the same time, the size of the device of the present invention can be adjusted to adapt to different types of rudder propellers, and has strong flexibility and adaptability. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the installation of the marine expandable watertight vibration damping assembly of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the marine expansion watertight vibration damping component of the present invention.

[0029] Figure 3 This is a schematic diagram of the fixing component in the marine expansion watertight vibration damping assembly of the present invention.

[0030] Figure label: 1. Base cofferdam; 11. First plate; 12. Second plate; 13. Third plate; 2. Pressure flange; 21. Adjusting shim; 22. Bolt; 3. Mounting base; 31. Mounting plate; 32. Adjusting pressure plate; 4. Elastic element; 5. Support element; A. Marine expandable watertight vibration damping assembly of the present invention; B. Propeller; C. Hull structure reinforcement; N. Receiving cavity. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The technical solution of this invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] See appendix Figure 1-3 One embodiment of the present invention provides a marine expandable watertight vibration damping assembly, including a mounting base 3, an elastic element 4, a fixing element and a support element 5; The elastic element 4 is connected to the fixing element; one end of the mounting base 3 is connected to the elastic element 4, and the other end is used to connect to the propeller. The fasteners include a base cofferdam 1 and a pressure flange 2; The base well 1 includes two parallel first plate surfaces 11 and second plate surfaces 12, and a third plate surface 13 perpendicular to the first plate surface 11 and second plate surface 12; the third plate surface 13 is connected to one end of the first plate surface 11, and the third plate surface 13 is connected to the second plate surface 12 at the middle position; the first plate surface 11 and the pressure flange 2 are fixedly connected. One end of the support member 5 is used to connect to the outer plate of the hull, and the other end is used to connect to the second plate 12; The second plate 12 is connected to the reinforcing members of the hull structure.

[0034] In this embodiment, the marine expandable watertight vibration damping component is connected to the outer plate of the hull via the support member 5, and is fixedly connected to the reinforcing member of the hull structure via the second plate 12, thereby realizing the fixed installation of the marine expandable watertight vibration damping component on the hull.

[0035] In some embodiments, the marine expansion-type watertight vibration damping assembly tightly connects the gland flange 2 to the base cofferdam 1 using mounting bolts. This fastening method applies uniform pressure to the elastic element 4, allowing the elastic element 4 to fully deform and conform to the connection surface, further enhancing the sealing effect and preventing seal failure due to bolt loosening.

[0036] In some embodiments, the support member 5 is connected to the second plate surface 12 by bolts.

[0037] In this embodiment, the marine expandable watertight vibration damping assembly, through the structural design of the relative positional relationship between the pressure flange 2, the base cofferdam 1 and the mounting base 3, forms a specific buffer space through the cooperation between the components. When the marine expandable watertight vibration damping assembly is subjected to vibration impact, it can alleviate the vibration through slight displacement and deformation, thus playing an effective auxiliary vibration damping role.

[0038] The marine expandable watertight vibration damping component of the present invention has a simple structure, which can greatly reduce the difficulty of construction and the workload during installation. At the same time, the size of the marine expandable watertight vibration damping component of the present invention can be adjusted to adapt to different types of rudder propellers, and has strong flexibility and adaptability.

[0039] In this embodiment, the dimensions of the mounting base 3, base cofferdam 1, pressure flange 2, and support 5 can be adjusted and selected according to the actual application and the type of corresponding propeller.

[0040] In some embodiments, the mounting base 3, base enclosure 1, pressure flange 2, and support 5 may be made of materials with corrosion resistance, such as stainless steel.

[0041] In some embodiments, the gland flange 2 is provided with an adjusting shim 21 that is perpendicularly connected to the gland flange 2, and the adjusting shim 21 is used to adjust and lock the elastic member 4.

[0042] In some embodiments, the adjusting shim 21 is connected to the gland flange 2 by bolts 22.

[0043] In this embodiment, the bolts 22 and adjusting shims 21 are used to fine-tune the gaps between connecting components such as the fixing element, the elastic element 4, and the mounting base 3. If a poor sealing effect is found during installation or use, the relative position and pressure between the components can be changed by adjusting the bolts 22 and adjusting shims 21 to ensure that the elastic element is always in the best sealing state.

[0044] In some embodiments, the size of the adjusting shim 21 is adapted to the elastic element 4.

[0045] In some embodiments, the gland flange 2 forms a receiving cavity (N) with the second plate surface 12 and the third plate surface 13.

[0046] In some embodiments, the elastic element 4 is disposed within the accommodating cavity (N); the elastic element 4 is adapted to the size of the accommodating cavity (N).

[0047] In some embodiments, the elastic element 4 includes at least two rubber washers, which are stacked together; one end of the mounting base 3 is connected between the two rubber washers.

[0048] In this embodiment, a rubber gasket is selected as the elastic component 4. The rubber gasket material itself has good elasticity and sealing properties, which can fill the tiny gaps between components, effectively blocking the intrusion of media such as seawater, preventing water leakage into the hull, ensuring a dry environment in the hull compartments, and avoiding equipment damage due to water immersion. At the same time, the rubber gasket also has shock absorption characteristics. Due to the elasticity of the rubber material, when the azimuth propeller vibrates during ship navigation, the rubber gasket can absorb and buffer the vibration energy, reduce the transmission of vibration to the hull structure, and reduce the noise and structural fatigue damage to the hull caused by propeller vibration.

[0049] In some embodiments, the elastic element 4 may also be made of other elastic materials.

[0050] In some embodiments, the elastic element 4 includes three rubber gaskets.

[0051] In some embodiments, the mounting base 3 includes a mounting plate 31 and an adjusting pressure plate 32; the mounting plate 31 is arranged parallel to the hull, and one end of the mounting plate 31 is connected between two rubber gaskets; the adjusting pressure plate 32 is vertically and movably arranged on the mounting plate 31 for adjusting and locking the rubber gaskets.

[0052] In this embodiment, by connecting one end of the mounting plate 31 between two rubber gaskets, the rubber gasket located under the mounting plate 31 can be pressed by the weight of the propeller body itself, and the rubber gasket located on the mounting plate 31 can be adjusted and pressed by the adjusting shim 21 set on the pressure cover flange 2, so as to effectively seal the hull and prevent the intrusion of seawater and other media, prevent water leakage into the hull, ensure a dry environment in the hull compartment, and avoid equipment damage due to water immersion.

[0053] In some embodiments, at least two rubber gaskets are provided under the mounting plate 31. In this embodiment, providing at least two rubber gaskets under the mounting plate 31 can better support the weight of the propeller body and prevent the rubber gaskets from failing to perform their elastic function due to the excessive weight of the propeller body, thereby weakening the final shock absorption and sealing effect.

[0054] In some embodiments, the mounting plate 31 and the adjusting pressure plate 32 are connected by bolts. In this embodiment, the adjusting bolts allow the adjusting pressure plate 32 to press and lock the rubber gasket, achieving an excellent sealing effect.

[0055] In some embodiments, the length of the adjusting plate 32 is greater than or equal to the total height of all rubber gaskets. In this embodiment, when the length of the adjusting plate 32 is greater than or equal to the total height of all rubber gaskets, the sealing effect of the marine expandable watertight vibration damping assembly can be effectively improved, preventing problems such as seawater leakage when the marine expandable watertight vibration damping assembly is operating underwater.

[0056] In some embodiments, the marine expandable watertight vibration damping assembly of the present invention can be applied to various underwater propulsion devices such as propellers, ducted propellers, waterjet propellers, and biomimetic propellers.

[0057] The marine expandable watertight vibration damping assembly described in this invention has shown remarkable results in vessels already in operation. It not only effectively reduces hull structural vibration during navigation, but also demonstrates excellent sealing performance, with no seawater leakage observed even in harsh underwater environments with high pressure differentials. The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0058] In the description of this application, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this application, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

Claims

1. A marine expansion type watertight damping assembly, characterized by, The mounting base, the elastic member, the fixing member and the support member are included. The elastic member is connected with the fixing member; one end of the mounting base is connected with the elastic member, and the other end is used for being connected with the rudder. The fixing member includes a base enclosure and a gland flange. The base enclosure includes two first plate surfaces parallel to each other, a second plate surface, and a third plate surface perpendicular to the first plate surfaces and the second plate surface; the third plate surface is connected with one end of the first plate surface, and the third plate surface is connected with the middle position of the second plate surface. The first plate surface is fixedly connected with the gland flange. One end of the support member is used for being connected with the hull plate, and the other end is connected with the second plate surface. The second plate surface is connected with the reinforcing member of the ship structure.

2. A marine expansion type watertight vibration damping assembly as claimed in claim 1, characterized in that An adjusting gasket is arranged on the gland flange and is connected with the gland flange perpendicularly; the adjusting gasket is used for adjusting the locking of the elastic member.

3. A marine expansion type watertight vibration damping assembly as claimed in claim 2, characterized in that The size of the adjusting gasket is matched with the elastic member.

4. The marine expansion water-tight vibration damping assembly of claim 1, wherein, The gland flange forms a containing cavity with the second plate surface and the third plate surface.

5. A marine expansion type watertight vibration damping assembly as claimed in claim 4, characterized in that The elastic member is arranged in the containing cavity; the size of the elastic member is matched with the containing cavity.

6. A marine expansion type watertight vibration damping assembly as claimed in claim 1, wherein, The elastic member includes at least two rubber gaskets, and the at least two rubber gaskets are arranged in layers; one end of the mounting base is connected between the two rubber gaskets.

7. A marine expansion type watertight vibration damping assembly as claimed in claim 6, characterized in that The elastic member includes three rubber gaskets.

8. A marine expansion type watertight vibration damping assembly as claimed in claim 6, wherein, The mounting base includes a mounting plate and an adjusting pressing plate; the mounting plate is arranged parallel to the hull; one end of the mounting plate is connected between the two rubber gaskets; the adjusting pressing plate is arranged on the mounting plate perpendicularly and movably, and is used for adjusting and locking the rubber gaskets.

9. A marine expansion type watertight vibration damping assembly as claimed in claim 8, characterized in that The length of the adjusting pressing plate is greater than or equal to the total height of all the rubber gaskets.

10. Application of the marine inflatable water-tight vibration-damping assembly according to any one of claims 1-9 to the underwater propulsion device.

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