A rudder system

Abstract

The application belongs to the technical field of ships and discloses a rudder system structure. The rudder system structure comprises a rudder stock, a rudder stock sleeve assembly, a first sealing element, a fixing seat and a sealing protection body. The rudder stock sleeve assembly comprises a connecting cylinder, an upper rudder bearing and a lower rudder bearing. The connecting cylinder is sleeved on the rudder stock. The upper rudder bearing and the lower rudder bearing are arranged at two ends of the connecting cylinder and are rotationally connected with the rudder stock. The first sealing element is arranged between the rudder stock and the lower rudder bearing. The fixing seat is coaxially sleeved on the outer periphery of the rudder stock sleeve assembly, and an annular cavity is formed between the fixing seat and the rudder stock sleeve assembly. The material of the fixing seat is different from that of the rudder stock sleeve assembly. The sealing protection body is arranged in the annular cavity and is used for sealing and isolating the fixing seat and the rudder stock sleeve assembly. In this way, the fixing seat and the rudder stock sleeve assembly can be isolated, electrochemical corrosion between the fixing seat and the rudder stock sleeve assembly can be avoided, the corrosion prevention effect of the rudder system is improved, seawater can be effectively prevented from penetrating into the rudder stock, and the service life of the rudder system structure is prolonged.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to a rudder system structure. Background Technology

[0002] After the ship material was changed from steel to aluminum alloy, the sailing speed was improved. However, most of the ship equipment is currently only suitable for steel ships, and there are very few equipment designed specifically for aluminum alloy ships. Among them, the rudder system still uses the same stainless steel material as steel ships. Due to the special structure of the rudder system, it is not possible to use the same material as the aluminum alloy hull. The steel rudder system is prone to a potential difference with the aluminum alloy hull, which in turn causes electrochemical corrosion of dissimilar metals.

[0003] Currently, traditional anti-corrosion processes for rudder systems mostly involve spraying an insulating coating onto the surface of the steel rudder system and installing rubber gaskets or plastic spacers to isolate the steel rudder system from the aluminum alloy hull and seawater. However, the rudder system is close to the propeller and is in constant motion, constantly subjected to high-speed water flow. This makes the insulating coating and seals on its surface prone to damage, resulting in poor protective effects from traditional anti-corrosion processes and a shortened service life. Furthermore, existing conventional rudder systems have poor sealing, allowing seawater to easily seep into the rudder stock, causing corrosion and further affecting the reliability of the rudder system.

[0004] Therefore, it is urgent to propose a rudder system structure to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a rudder system structure that can effectively prevent electrochemical corrosion between the fixed seat and the rudder stock assembly, improve the corrosion resistance of the rudder system, and effectively prevent seawater from seeping into the rudder stock, thereby extending the service life of the rudder system.

[0006] To achieve this objective, the present invention adopts the following technical solution: A rudder system structure, comprising: Steer stick; A rudder stock sleeve assembly includes a connecting sleeve, an upper rudder bearing, and a lower rudder bearing. The connecting sleeve is sleeved around the rudder stock, and the upper rudder bearing and the lower rudder bearing are respectively located at both ends of the connecting sleeve and are rotatably connected to the rudder stock. A first seal is provided between the rudder stock and the lower rudder bearing; A fixed seat is coaxially sleeved on the outer periphery of the rudder stick sleeve assembly, and the two enclose each other to form an annular cavity. The material of the fixed seat is different from that of the rudder stick sleeve assembly. A sealing and protective body is disposed within the annular cavity to seal and isolate the fixed base and the rudder sleeve assembly.

[0007] As an optional embodiment of the rudder system structure, a bushing is provided between the lower rudder bearing and the rudder stock, and the first seal is located below the bushing; The rudder system structure also includes an annular clamping member, which is connected to the bottom of the lower rudder bearing and is used to clamp the first seal.

[0008] As an optional embodiment of the rudder system structure, the rudder system structure further includes a second seal, and the rudder stock assembly further includes an upper rudder bearing seat, which is located at the top of the connecting cylinder and is used to support the upper rudder bearing. The second seal is sandwiched between the upper rudder bearing and the upper rudder bearing seat.

[0009] As an optional embodiment of the rudder system structure, the upper rudder bearing seat includes a first connector and a second connector. The first connector is fixed to the top of the connecting cylinder, and the upper rudder bearing is detachably connected to the first connector. The second connector is located below the first connector and is sleeved on the outer periphery of the connecting cylinder. The second connector and the fixed seat form the top opening of the annular cavity. The rudder system structure also includes an annular sealing member, which is coaxially sleeved outside the rudder stock assembly and is configured to seal the bottom of the annular cavity.

[0010] As an optional embodiment of the rudder system structure, the upper rudder bearing also includes a reinforcing member, the two ends of which are fixedly connected to the annular periphery of the first connecting member and the annular periphery of the second connecting member, respectively.

[0011] As an alternative to the rudder system structure, the sealing and protective body is an epoxy resin filling layer, which is formed by injecting epoxy resin into the annular cavity and curing it.

[0012] As an alternative to the rudder system structure, the outer peripheral wall of the mounting base is provided with at least one injection hole, which penetrates the outer peripheral wall of the mounting base and connects to the annular cavity, allowing epoxy resin to be injected into the annular cavity.

[0013] As an optional embodiment of the rudder system structure, the rudder system structure further includes an adjusting member. The outer peripheral wall of the fixed base is provided with a plurality of radially extending connecting holes at circumferential intervals. The adjusting member is threadedly connected to the connecting holes and abuts against the outer peripheral wall of the lower rudder bearing.

[0014] As an optional solution to the rudder system structure, a rubber sealing gasket is provided between the adjusting member and the outer peripheral wall of the fixed seat.

[0015] As an optional embodiment of the rudder system structure, the rudder system structure further includes an anti-slip ring, which is sleeved on the outer periphery of the rudder stock and located at the top of the rudder stock.

[0016] The beneficial effects of this invention are: This invention provides a rudder system structure in which upper and lower rudder bearings are respectively located at both ends of a connecting cylinder and rotatably connected to the rudder stock. A first sealing element is located between the rudder stock and the lower rudder bearing, effectively preventing seawater from seeping into the rudder stock from between the two, thereby improving the sealing performance of the rudder system structure. A fixed seat is coaxially sleeved on the outer periphery of the rudder stock assembly to improve the stability of the rudder system structure. Since the material of the fixed seat is different from that of the rudder stock assembly, an annular cavity is formed by enclosing the fixed seat and the rudder stock assembly, and a sealing protective body is installed within the annular cavity. The sealing protective body is used to seal and isolate the fixed seat and the rudder stock assembly, effectively preventing electrochemical corrosion between the fixed seat and the rudder stock assembly, improving the corrosion resistance of the rudder system structure, and extending the service life of the rudder system structure. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the rudder system structure provided in a specific embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the structure at point A; Figure 3 This is a schematic diagram of the rudder post sleeve assembly provided in a specific embodiment of the present invention.

[0018] In the picture: 1. Steer arm; 2. Rudder stock sleeve assembly; 21. Connecting cylinder; 22. Upper rudder bearing; 23. Lower rudder bearing; 24. Upper rudder bearing seat; 241. First connecting piece; 242. Second connecting piece; 243. Reinforcing piece; 25. First seal; 26. Bushing; 27. Second seal; 3. Fixing base; 31. Injection hole; 32. Adjusting component; 33. Injection tube; 4. Sealed protective body; 5. Ring-shaped clamping component; 6. Annular sealing component; 7. Bolts; 8. Lower anti-jump ring. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In the description of this invention, unless otherwise expressly specified and limited, "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. Furthermore, "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. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Currently, traditional anti-corrosion processes for rudder systems mostly involve spraying an insulating coating onto the surface of the steel rudder system and installing rubber gaskets or plastic spacers to isolate the steel rudder system from the aluminum alloy hull and seawater. However, the rudder system is close to the propeller and is in constant motion, constantly subjected to high-speed water flow. This makes the insulating coating and seals on its surface prone to damage, resulting in poor protective effects from traditional anti-corrosion processes and a shortened service life. Furthermore, existing conventional rudder systems have poor sealing, allowing seawater to easily seep into the rudder stock, causing corrosion and further affecting the reliability of the rudder system.

[0024] Based on the above issues, such as Figures 1 to 3 As shown, this embodiment provides a rudder system structure, which includes a rudder stock 1, a rudder stock sleeve assembly 2, a first seal 25, a fixed seat 3, and a sealing protection body 4. The rudder stock sleeve assembly 2 includes a connecting cylinder 21, an upper rudder bearing 22, and a lower rudder bearing 23. The connecting cylinder 21 is sleeved on the outside of the rudder stock 1. The upper rudder bearing 22 and the lower rudder bearing 23 are respectively located at both ends of the connecting cylinder 21 and are rotatably connected to the rudder stock 1. The first seal 25 is located between the rudder stock 1 and the lower rudder bearing 23. The fixed seat 3 is coaxially sleeved on the outer periphery of the rudder stock sleeve assembly 2, and the two together form an annular cavity. The material of the fixed seat 3 is different from the material of the rudder stock sleeve assembly 2. The sealing protection body 4 is located within the annular cavity and is used to seal and isolate the fixed seat 3 and the rudder stock sleeve assembly 2.

[0025] The upper rudder bearing 22 and the lower rudder bearing 23 are respectively located at both ends of the connecting cylinder 21 and are rotatably connected to the rudder stock 1. The first sealing element 25 is located between the rudder stock 1 and the lower rudder bearing 23, effectively preventing seawater from seeping into the rudder stock 1 from between the rudder stock 1 and the lower rudder bearing 23, thereby improving the sealing performance of the rudder system structure. The fixed seat 3 is coaxially sleeved on the outer periphery of the rudder stock sleeve assembly 2 to improve the stability of the rudder system structure. Since the material of the fixed seat 3 is different from that of the rudder stock sleeve assembly 2, an annular cavity is formed by enclosing the fixed seat 3 and the rudder stock sleeve assembly 2, and a sealing protective body 4 is set in the annular cavity. The sealing protective body 4 is used to seal and isolate the fixed seat 3 and the rudder stock sleeve assembly 2, effectively avoiding electrochemical corrosion between the fixed seat 3 and the rudder stock sleeve assembly 2, improving the corrosion resistance of the rudder system structure, and extending the service life of the rudder system structure.

[0026] It should be noted that both the mounting base 3 and the hull are made of aluminum alloy, preventing electrochemical corrosion between the mounting base 3 and the hull. However, the rudder stock assembly 2 is made of steel. If the rudder stock assembly 2 directly contacts the aluminum alloy hull, electrochemical corrosion will occur due to the dissimilar metals. Therefore, the outer wall of the mounting base 3 can be welded to the inner wall of the hull, forming an annular cavity between the aluminum alloy mounting base 3 and the steel rudder stock assembly 2. A sealing protective body 4 is placed within this annular cavity, effectively separating the mounting base 3 from the rudder stock assembly 2 and preventing electrochemical corrosion due to dissimilar metal contact. In this embodiment, the first sealing element 25 is a rubber sealing ring.

[0027] In some embodiments, a bushing 26 is provided between the lower rudder bearing 23 and the rudder stock 1, and a first seal 25 is located below the bushing 26. The rudder system structure also includes an annular clamping member 5, which is connected to the bottom of the lower rudder bearing 23 and is used to clamp the first seal 25. The bushing 26 is sandwiched between the lower rudder bearing 23 and the rudder stock 1, which can buffer the shaking between the rudder system structure, reduce the rigid friction between the rudder stock 1 and the lower rudder bearing 23, avoid direct contact between the two and cause wear, and improve the smoothness of the rotation of the rudder stock 1. The annular clamping member 5 is connected to the bottom of the lower rudder bearing 23 and clamps the first seal 25, which can form a reliable axial positioning for the first seal 25, ensure the tight fit between the first seal 25 and the bushing 26 and the rudder stock 1, effectively prevent seawater from entering from the mating gap below the bushing 26, avoid rudder system shaking leading to seal failure, and further enhance the sealing reliability of the rudder system structure.

[0028] Specifically, bushing 26 is a rubber bushing, which simplifies the installation of the rudder system and reduces its manufacturing cost. In this embodiment, the annular clamping member 5 is an annular pressure plate, which is detachably connected to the bottom of the lower rudder bearing 23. The annular pressure plate and the bottom of the lower rudder bearing 23 are detachably screwed together by bolts 7, which facilitates the disassembly and maintenance of the rudder system. This embodiment does not impose specific limitations on this aspect.

[0029] Optionally, the rudder system structure further includes a second seal 27, and the rudder stock sleeve assembly 2 further includes an upper rudder bearing seat 24, which is located on top of the connecting cylinder 21 and is used to support the upper rudder bearing 22; the second seal 27 is sandwiched between the upper rudder bearing 22 and the upper rudder bearing seat 24. The upper rudder bearing seat 24 can provide stable support for the upper rudder bearing 22, improve the assembly accuracy of the upper rudder bearing 22 and the rudder stock 1, and the second seal 27, sandwiched between the upper rudder bearing 22 and the upper rudder bearing seat 24, can fill the assembly gap between the two, buffer the vibration and impact during rudder system operation, reduce rigid contact wear, and extend the service life of the upper rudder bearing 22.

[0030] Specifically, the upper rudder bearing 24 is fixedly connected to the top of the connecting cylinder 21, improving the overall stability of the rudder system structure. In this embodiment, the second sealing element 27 is a rubber sealing ring, and this embodiment does not impose specific limitations on it.

[0031] In some embodiments, the upper rudder bearing seat 24 includes a first connector 241 and a second connector 242. The first connector 241 is fixed to the top of the connecting cylinder 21, and the upper rudder bearing 22 is detachably connected to the first connector 241. The second connector 242 is located below the first connector 241 and is sleeved on the outer periphery of the connecting cylinder 21. The second connector 242 and the fixed seat 3 form the top opening of the annular cavity. The rudder system structure also includes an annular sealing member 6, which is coaxially sleeved on the outside of the rudder stock sleeve assembly 2. The annular sealing member 6 is configured to seal the bottom of the annular cavity. The first connector 241 can provide an installation reference for the upper rudder bearing 22, facilitating the installation of the upper rudder bearing 22. The upper rudder bearing 22 is detachably connected to the first connector 241, facilitating the disassembly and maintenance of the upper rudder bearing 22 and improving the installation efficiency of the rudder system structure. The annular sealing component 6 seals the bottom of the annular cavity, effectively preventing seawater from entering the annular cavity from the bottom, further improving the corrosion resistance and sealing effect of the rudder system structure, and extending the service life of the rudder system structure.

[0032] Specifically, the upper rudder bearing 22 is detachably screwed to the first connecting member 241 by bolts 7, facilitating the disassembly and maintenance of the upper rudder bearing 22 and the first connecting member 241. The second connecting member 242 is detachably screwed to the top of the fixed seat 3 by bolts 7, facilitating the disassembly and maintenance of the second connecting member 242 and the fixed seat 3, and improving the maintenance efficiency of the rudder system structure. The annular sealing member 6 is fixedly connected to the bottom of the fixed seat 3 and can seal the bottom of the annular cavity. The fixed connection between the annular sealing member 6 and the bottom of the fixed seat 3 can be welding, which can effectively improve the overall structural strength of the rudder system structure, or it can be bonded with industrial adhesive. This embodiment does not impose specific limitations on this. In this embodiment, the annular sealing member 6 is an annular plate, which is welded to the bottom of the fixed seat 3 and can seal the bottom of the annular cavity, thereby improving the overall structural strength of the rudder system structure and enhancing the sealing performance of the rudder system structure.

[0033] It should be noted that the outer peripheral wall of the second connector 242 is connected to the hull, and after the bolt 7 passes through the second connector 242, it is connected and fixed with the top thread of the fixing seat 3.

[0034] Furthermore, the upper rudder bearing 24 also includes a reinforcing member 243, with both ends of the reinforcing member 243 fixedly connected to the annular periphery of the first connecting member 241 and the annular periphery of the second connecting member 242, respectively. This configuration enhances the overall structural strength and rigidity of the upper rudder bearing 24, improves the load-bearing capacity and deformation resistance of the rudder sleeve assembly 2, effectively resists external forces and swaying impacts during rudder system operation, ensures the structural stability of the upper rudder bearing 22 support position, and extends the service life of the rudder system.

[0035] Specifically, the two ends of the reinforcing member 243 are fixedly connected to the annular periphery of the first connecting member 241 and the annular periphery of the second connecting member 242 by welding, thereby improving the overall structural strength and rigidity of the reinforcing member 243. In this embodiment, both the first connecting member 241 and the second connecting member 242 are fixed flanges, and the reinforcing member 243 is a stiffening plate; this embodiment does not impose specific limitations on this.

[0036] In some embodiments, the sealing and protective body 4 is an epoxy resin filling layer, which is formed by injecting epoxy resin into the annular cavity and curing it. The epoxy resin can fill the entire annular cavity, and the cured epoxy resin filling layer separates the fixing seat 3 from the rudder stock sleeve assembly 2. On the one hand, it effectively blocks the electrochemical corrosion between the fixing seat 3 and the rudder stock sleeve assembly 2. On the other hand, after curing, the epoxy resin forms an integral protective structure that is not easily damaged or detached, effectively improving the corrosion resistance and sealing performance and service life of the rudder system structure.

[0037] It should be noted that the top opening of the annular cavity is located between the bottom of the second connector 242 and the top of the fixed base 3. During the epoxy resin injection process, the epoxy resin in the annular cavity can overflow through the top opening, thereby determining whether the epoxy resin has been injected in place, avoiding void defects in the annular cavity, and ensuring the sealing reliability and structural stability of the rudder system structure.

[0038] Optionally, the outer peripheral wall of the fixing base 3 is provided with at least one injection hole 31, which penetrates the outer peripheral wall of the fixing base 3 and connects to the annular cavity. The injection hole 31 allows epoxy resin to be injected into the annular cavity. The injection hole 31 facilitates the smooth injection of epoxy resin and ensures that the annular cavity is free of voids, thereby improving the filling quality of the epoxy resin filling layer. At the same time, it simplifies the epoxy resin filling process and improves the filling efficiency of the epoxy resin filling layer.

[0039] In this embodiment, a glue injection through hole 31 is provided on the outer peripheral wall of the fixing seat 3. Epoxy resin can be directly injected after the rudder system structure is assembled. This not only meets the requirement of smooth injection of epoxy resin to fill the annular cavity, but also simplifies the processing steps of the fixing seat 3, reduces the number of openings, maintains the structural integrity and strength of the fixing seat 3, and reduces the difficulty of assembly and sealing construction. It should be noted that the number of glue injection through holes 31 can also be multiple, and this embodiment does not impose a specific limitation.

[0040] In other embodiments, an injection tube 33 is sealed and connected to the injection hole 31, and the injection tube 33 is inclined outward from bottom to top. This facilitates the smooth flow of epoxy resin into the annular cavity under its own weight, and also allows air in the cavity to be smoothly discharged during the injection process, avoiding air bubbles and voids after filling, and ensuring a dense filling. At the same time, this inclined structure can effectively prevent the resin from flowing back and overflowing, and facilitates subsequent sealing of the tube opening. It should be noted that the aluminum alloy hull is equipped with an injection chamber, and the injection tube 33 extends into the injection chamber inside the hull. Operators can inject epoxy resin into the injection tube 33 from the injection chamber.

[0041] Optionally, the rudder system structure also includes an adjusting member 32. The outer peripheral wall of the fixed base 3 is provided with multiple radially extending connecting holes spaced apart. The adjusting member 32 is threaded into the connecting holes and abuts against the outer peripheral wall of the lower rudder bearing 23. By rotating the adjusting member 32, it can extend or retract radially along the fixed base 3, thereby pushing against the outer peripheral wall of the lower rudder bearing 23 to adjust the radial position of the rudder stock assembly 2. This effectively compensates for installation deviations generated during hull processing or assembly, ensuring smooth operation of the rudder system structure and improving its installation adaptability and operational stability.

[0042] In some embodiments, a rubber sealing gasket is provided between the adjusting member 32 and the outer peripheral wall of the fixed seat 3. This arrangement can seal the assembly gap of the connecting hole, prevent seawater from seeping into the annular cavity along the thread gap, and protect the internal structure from corrosion. It can also buffer the operating vibration of the rudder system structure, reduce the rigid impact between the adjusting member 32 and the fixed seat 3, and at the same time play an anti-loosening role, ensuring reliable positioning after adjustment.

[0043] In this embodiment, there are two connecting holes, which are evenly spaced along the circumference of the fixed base 3. The adjusting member 32 is an adjusting bolt, which is threaded into the connecting hole.

[0044] Furthermore, the rudder system structure also includes an anti-skid ring (not shown in the figure), which is sleeved around the outer periphery of the rudder stock 1 and located at the top of the rudder stock 1. This arrangement provides axial restraint to the rudder stock 1, effectively preventing axial movement during operation and swaying, ensuring stable mating positions between the rudder stock 1 and other components, and avoiding increased clearance, seal failure, and component impact damage due to rudder stock movement, thus improving the safety of the rudder system structure. It should be noted that the anti-skid ring is suitable for operating conditions with low stiffness and high vibration in aluminum alloy hulls, effectively improving the operational stability of the rudder system structure.

[0045] For example, in this embodiment, the rudder system structure further includes a lower anti-skid ring 8. The lower anti-skid ring 8 is sleeved on the outer periphery of the rudder stock 1 and located at the bottom of the annular clamping member 5. The lower anti-skid ring 8 can provide downward axial restraint for the rudder stock 1, preventing axial movement of the rudder stock 1 during operation and further ensuring the stability of the rudder system structure. It should be noted that both the anti-skid ring and the lower anti-skid ring 8 can be detachably connected to the outer periphery of the rudder stock 1. The detachable connection between the two and the rudder stock 1 is by screw connection, and this embodiment does not impose specific limitations on this.

[0046] It should be noted that this embodiment also provides the working principle of the rudder system structure: When installing the rudder system, first, the rudder stock sleeve assembly 2 is fitted onto the outer periphery of the rudder stock 1. Then, the second seal 27 is installed on the first connector 241. Next, the upper rudder bearing 22 is installed on the first connector 241 of the upper rudder bearing seat 24. Then, an anti-slip ring is installed on the top of the rudder stock 1. Next, the bushing 26 is installed between the rudder stock 1 and the lower rudder bearing 23, and a first seal 25 is placed at the bottom of the bushing 26. Then, an annular clamping member 5 is installed at the bottom of the lower rudder bearing 23, axially pressing the lower rudder bearing 23 against the first seal 25. Then, the fixing seat 3 is fitted onto the outer periphery of the rudder stock sleeve assembly 2, and the second connector 242 is fastened to the top of the fixing seat 3 using bolts 7. Next, a rubber sealing gasket is fitted onto the adjusting member 32, and the adjusting member 32 is threaded into the connecting hole of the fixing seat 3 to adjust the installation position of the rudder stock sleeve assembly 2 and the fixing seat 3, adapting to the installation error of the rudder system structure. Subsequently, an annular sealing element 6 is installed at the bottom of the fixed base 3 to seal the bottom of the annular cavity. The operator injects epoxy resin into the annular cavity through the glue injection hole 31 on the fixed base 3. After the epoxy resin cures, the lower anti-slip ring 8 is finally installed at the bottom of the rudder spool 1 to complete the installation of the rudder system structure.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A rudder system structure, characterized in that, include: Steering stick (1); The rudder stock sleeve assembly (2) includes a connecting cylinder (21), an upper rudder bearing (22) and a lower rudder bearing (23). The connecting cylinder (21) is sleeved on the outside of the rudder stock (1). The upper rudder bearing (22) and the lower rudder bearing (23) are respectively located at both ends of the connecting cylinder (21) and are rotatably connected to the rudder stock (1). A first seal (25) is provided between the rudder stock (1) and the lower rudder bearing (23); The fixed seat (3) is coaxially sleeved on the outer periphery of the rudder sleeve assembly (2), and the two form an annular cavity. The material of the fixed seat (3) is different from that of the rudder sleeve assembly (2). A sealing and protective body (4) is provided in the annular cavity to seal and isolate the fixed seat (3) and the rudder sleeve assembly (2).

2. The rudder system structure according to claim 1, characterized in that, A bushing (26) is provided between the lower rudder bearing (23) and the rudder stock (1), and the first seal (25) is located below the bushing (26); The rudder system structure also includes an annular clamping member (5), which is connected to the bottom of the lower rudder bearing (23) and is used to clamp the first seal (25).

3. The rudder system structure according to claim 1, characterized in that, The rudder system structure also includes a second seal (27), and the rudder sleeve assembly (2) also includes an upper rudder bearing seat (24), which is located on the top of the connecting cylinder (21) and is used to support the upper rudder bearing (22). The second seal (27) is sandwiched between the upper rudder bearing (22) and the upper rudder bearing seat (24).

4. The rudder system structure according to claim 3, characterized in that, The upper rudder bearing seat (24) includes a first connector (241) and a second connector (242). The first connector (241) is fixed to the top of the connecting cylinder (21), and the upper rudder bearing (22) is detachably connected to the first connector (241). The second connector (242) is located below the first connector (241) and is sleeved on the outer periphery of the connecting cylinder (21). The second connector (242) and the fixed seat (3) form the top opening of the annular cavity. The rudder system structure also includes an annular sealing member (6), which is coaxially sleeved outside the rudder stock assembly (2) and is configured to seal the bottom of the annular cavity.

5. The rudder system structure according to claim 4, characterized in that, The upper rudder bearing (24) also includes a reinforcing member (243), the two ends of which are fixedly connected to the annular periphery of the first connecting member (241) and the annular periphery of the second connecting member (242), respectively.

6. The rudder system structure according to claim 1, characterized in that, The sealing and protective body (4) is an epoxy resin filling layer, which is formed by epoxy resin being injected into the annular cavity and cured.

7. The rudder system structure according to claim 6, characterized in that, At least one injection hole (31) is provided on the outer peripheral wall of the fixing seat (3). The injection hole (31) penetrates the outer peripheral wall of the fixing seat (3) and connects to the annular cavity. The injection hole (31) allows the epoxy resin to be injected into the annular cavity.

8. The rudder system structure according to any one of claims 1-7, characterized in that, The rudder system structure also includes an adjusting member (32). The outer peripheral wall of the fixed seat (3) is provided with a plurality of radially extending connecting holes at intervals. The adjusting member (32) is threaded to the connecting holes and abuts against the outer peripheral wall of the lower rudder bearing (23).

9. The rudder system structure according to claim 8, characterized in that, A rubber sealing gasket is provided between the adjusting member (32) and the outer peripheral wall of the fixed seat (3).

10. The rudder system structure according to any one of claims 1-7, characterized in that, The rudder system structure also includes an anti-jump ring, which is sleeved on the outer periphery of the rudder stock (1) and located at the top of the rudder stock (1).

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