High-strength propeller for marine equipment with easy adjustment

Abstract

The utility model relates to ship propulsion equipment technical field discloses a high -strength propeller for ship equipment convenient to adjust aims at solving the existing ship propeller sealing performance is poor, the inconvenient blade angle adjustment, the rotating part power supply easy failure and core component easy damage problem. The propeller includes the mounting seat and the hub, and the bearing seat is equipped between both to reduce the rotation friction, the hub outside is equipped with the sealing ring, the elastic sealing sleeve and the sealing cone ring in proper order, and the sealing ring and sealing cone ring are equipped with the expansion device and the guide mechanism. The utility model through many structures cooperation realizes reliable sealing, can adjust the blade angle to adapt to heavy load, light load and different navigation working condition, and wireless power supply avoids the cable winding abrasion problem, improves the part durability at the same time, reduces the maintenance cost, and significantly enhances the propeller operation stability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of ship propulsion equipment technology, specifically a high-strength propeller for ship equipment that is easy to adjust. Background Technology

[0002] As is well known, in ship propulsion systems, the propeller, as a core propulsion component, directly affects the ship's navigation efficiency and safety through its performance and reliability. Existing ship propellers have several shortcomings in practical applications: The blade angle is difficult to adjust flexibly and stably according to different navigation conditions of the ship (such as heavy load and light load). Even if some propellers have adjustment functions, the sealing structure is prone to instability during the adjustment process, which further affects the performance and makes it difficult to meet the requirements of long-term stable navigation of the ship. Therefore, it is necessary to propose solutions to the above technical problems. Utility Model Content

[0003] (a) Technical problems to be solved To address the problems of poor sealing performance and inconvenient blade angle adjustment in existing propellers, this utility model provides a high-strength propeller for marine equipment that is easy to adjust.

[0004] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a high-strength propeller for easily adjustable marine equipment, comprising a mounting base and a propeller hub. A bearing seat is provided between the mounting base and the propeller hub. A sealing ring is provided on the outer side of the propeller hub. An elastic sealing sleeve is provided at one end of the sealing ring. A sealing cone ring is provided at one end of the elastic sealing sleeve. A telescopic device and a guide mechanism are provided between the sealing ring and the sealing cone ring. An adjusting shaft is provided on the outer side of the propeller hub. A propeller blade is provided at one end of the adjusting shaft. An arc groove is formed at one end of the propeller blade. A sealed bearing is provided between the adjusting shaft and the propeller hub. Multiple adjusting shafts are arranged in a circular array with the propeller hub as the axis. A sealing groove is formed at one end of the propeller hub. A magnetically coupled resonant wireless power supply unit is provided between the sealing groove and the mounting base.

[0005] Furthermore, the guiding mechanism includes a guide cylinder and a guide rod. The guide cylinder is installed at one end of the sealing ring, and the guide rod is installed at one end of the sealing cone ring, with the guide rod extending into the guide cylinder.

[0006] Furthermore, the magnetically coupled resonant wireless power supply unit includes a high-frequency inverter, a transmitting coil, a receiving coil, and a rectifier and filter module. The high-frequency inverter and the transmitting coil are both installed on the inner wall of the mounting base, and the receiving coil and the rectifier and filter module are both installed on the inner wall of the sealing groove.

[0007] Furthermore, the telescopic device is an electric push rod.

[0008] Furthermore, the elastic sealing sleeve is integrally molded from fluororubber material, and multiple arc-shaped reinforcing ribs are evenly distributed along the axial direction on the inner wall of the elastic sealing sleeve. The two ends of the elastic sealing sleeve are fixedly connected to the sealing ring and the sealing cone ring respectively through a vulcanization process, and the sealing pressure of the connection surface is ≥0.8MPa.

[0009] Furthermore, the sealed bearing is a double-row angular contact ball bearing, the outer ring of the sealed bearing is provided with a stainless steel dust cover, and the interior of the sealed bearing is filled with marine-grade grease. The fit tolerance between the sealed bearing and the adjusting shaft is H7 / k6.

[0010] Furthermore, both the transmitting coil and the receiving coil are wound with copper enameled wire, and the distance between the transmitting coil and the receiving coil is controlled at 5~10mm.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a high-strength propeller for marine equipment that is easy to adjust, and has the following beneficial effects: This easily adjustable high-strength propeller for marine equipment, by setting a bearing seat between the mounting base and the propeller hub, can ensure that the propeller hub can rotate flexibly around the ship's drive shaft, while reducing radial friction between the two, improving the smoothness of the propeller rotation process, reducing component wear, and extending the overall service life. The sealing system, consisting of the sealing ring, elastic sealing sleeve, and sealing cone ring on the outside of the propeller hub, can effectively prevent seawater from entering the propeller hub and avoid damage to internal components from seawater corrosion. Furthermore, the elastic sealing sleeve can adapt to the slight vibrations of the propeller hub during operation through its own elastic deformation, further enhancing the stability of the seal and ensuring the normal operation of internal components. The telescopic device and guide mechanism between the sealing ring and the sealing cone ring work together. When it is necessary to adjust the blade angle to adapt to different working conditions such as heavy load speed increase and light load energy saving, the telescopic device can drive the sealing cone ring to move. The sealing cone ring pushes the blade through the arc groove that contacts the blade. Combined with the adjustment shaft and sealing bearing, the blade angle can be flexibly adjusted. The guide mechanism can also ensure the stability of the sealing cone ring's movement direction, avoid deviation during the adjustment process, and ensure the reliability and accuracy of the angle adjustment. The magnetically coupled resonant wireless power supply unit between the sealing groove at one end of the propeller hub and the mounting base eliminates the need for physical wire connections, completely solving the power interruption problem caused by cable tangling and wear in traditional wired power supply methods. It can stably provide power to adjustment components such as telescopic devices, ensuring the continuous and normal operation of adjustment functions. Overall, it significantly improves the performance, adaptability to operating conditions, and reliability of the propeller, and better meets the needs of long-term stable navigation of ships. Attached Figure Description

[0012] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a front half-sectional view of the structure of this utility model; Figure 4 This is a left half-sectional view of the structure of this utility model.

[0013] In the diagram: 1. Mounting base; 2. Propeller hub; 3. Bearing housing; 4. Sealing ring; 5. Elastic sealing sleeve; 6. Sealing cone ring; 7. Telescopic device; 8. Propeller blade; 9. Sealed bearing; 10. Guide cylinder; 11. Guide rod; 12. High-frequency inverter; 13. Transmitting coil; 14. Receiving coil; 15. Rectifier and filter module; 16. Adjustment shaft. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1 to 4This utility model relates to a high-strength propeller for easily adjustable marine equipment, comprising a mounting base 1 and a propeller hub 2. A bearing seat 3 is provided between the mounting base 1 and the propeller hub 2. A sealing ring 4 is provided on the outer side of the propeller hub 2. An elastic sealing sleeve 5 is provided at one end of the sealing ring 4, and a sealing cone ring 6 is provided at one end of the elastic sealing sleeve 5. A telescopic device 7 and a guide mechanism are provided between the sealing ring 4 and the sealing cone ring 6. An adjusting shaft 16 is provided on the outer side of the propeller hub 2. A propeller blade 8 is provided at one end of the adjusting shaft 16. An arc groove is formed at one end of the propeller blade 8. A sealed bearing 9 is provided between the adjusting shaft 16 and the propeller hub 2. Multiple shafts 16 are arranged in a ring array around the propeller hub 2. One end of the propeller hub 2 is provided with a sealing groove. A magnetically coupled resonant wireless power supply unit is provided between the sealing groove and the mounting base 1. In this embodiment, the mounting base 1 is fixed on the drive shaft base of the ship propulsion system. The drive shaft is connected to the propeller hub 2. The rotational connection between the propeller hub 2 and the mounting base 1 is realized through the bearing seat 3 (the bearing seat 3 ensures that the propeller hub 2 can rotate flexibly around the drive shaft and reduces radial friction). Then, the sealing system is checked: ensure that the sealing ring 4 fits against the outer wall of the propeller hub 2, that there is no gap between the elastic sealing sleeve 5 and the sealing ring 4 and the sealing cone ring 6, and that the telescopic device 7 is in the initial reset state. After the ship starts, the drive shaft drives the propeller hub 2 to rotate, and the adjustment shaft 16 (distributed in a ring array) on the outside of the propeller hub 2 synchronously drives the propeller blade 8 to rotate, generating propulsion. During navigation, the elastic sealing sleeve 5 adapts to the slight vibration of the propeller hub 2 through its own elastic deformation, and the sealing cone ring 6 fits the propeller hub 2 under the pre-tightening force of the telescopic device 7 to prevent seawater from entering the interior of the propeller hub 2. The sealing bearing 9 ensures that the propeller hub 2 rotates smoothly and at the same time prevents seawater from entering the propeller hub 2. When the ship needs to adapt to different working conditions, such as heavy load speed increase and light load energy saving, the ship control system triggers the adjustment command: the magnetic coupling resonant wireless power supply unit supplies power to the telescopic device 7, so that the telescopic device 7 drives the sealing cone ring 6 to move linearly. The inclined part of the sealing cone ring 6 contacts and pushes the arc groove of the propeller blade 8. The propeller blade 8 achieves angle adjustment through the adjustment shaft 16 and the sealing bearing 9. The guide mechanism ensures that the moving direction of the sealing cone ring 6 is stable.

[0016] In this design, the guiding mechanism includes a guide cylinder 10 and a guide rod 11. The guide cylinder 10 is installed at one end of the sealing ring 4, and the guide rod 11 is installed at one end of the sealing cone ring 6. The guide rod 11 extends into the guide cylinder 10. When the telescopic device 7 drives the sealing cone ring 6 to move axially, the guide rod 11 always slides within the guide cylinder 10, allowing only axial movement to prevent the sealing cone ring 6 from shifting due to ship vibration or water flow impact. This prevents sealing gaps caused by the shifting of the sealing cone ring 6, avoids seawater leakage channels due to misalignment of the sealing cone ring 6, improves the reliability of the sealing system, and the guiding mechanism shares the radial force of the sealing cone ring 6, preventing damage to the telescopic device 7 due to excessive force on one side and extending the service life of the telescopic device 7.

[0017] In this scheme, the magnetically coupled resonant wireless power supply unit includes a high-frequency inverter 12, a transmitting coil 13, a receiving coil 14, and a rectifier and filter module 15. The high-frequency inverter 12 and the transmitting coil 13 are both installed on the inner wall of the mounting base 1, while the receiving coil 14 and the rectifier and filter module 15 are both installed on the inner wall of the sealing groove. The low-voltage DC power output from the ship's power supply system is converted into high-frequency AC power by the high-frequency inverter 12, causing the transmitting coil 13 on the inner wall of the mounting base 1 to generate an alternating magnetic field. The receiving coil 14 on the inner wall of the sealing groove of the propeller hub 2 induces a current in the alternating magnetic field, which is then converted into stable DC power by the rectifier and filter module 15 to power the telescopic device 7. The entire process requires no physical wire connection, adapting to the rotational state of the propeller hub 2. In this solution, the telescopic device 7 is an electric push rod, which can achieve precise stroke control through the ship's control system.

[0018] In this design, the elastic sealing sleeve 5 is integrally molded from fluororubber. Multiple arc-shaped reinforcing ribs are evenly distributed along the axial direction on the inner wall of the elastic sealing sleeve 5. Both ends of the elastic sealing sleeve 5 are fixedly connected to the sealing ring 4 and the sealing cone ring 6 respectively through a vulcanization process. The sealing pressure at the connection surface is ≥0.8MPa. Fluororubber possesses excellent resistance to seawater corrosion and high and low temperature performance (~20℃~200℃), allowing it to withstand the marine environment for extended periods. The arc-shaped reinforcing ribs on the inner wall enhance the tensile deformation resistance of the elastic sealing sleeve 5, preventing tearing due to the centrifugal force of the rotating propeller hub 2. The vulcanization process creates a seamless connection between the sealing sleeve and the sealing ring 4 and sealing cone ring 6. Combined with a sealing pressure of ≥0.8MPa, this completely blocks seawater leakage. The anti-aging performance of fluororubber is three times that of ordinary rubber, reducing the frequency of sealing sleeve replacement.

[0019] In this design, the sealed bearing 9 is a double-row angular contact ball bearing. A stainless steel dust cover is provided on the outer side of the outer ring of the sealed bearing 9, and the interior of the sealed bearing 9 is filled with marine-grade grease. The fit tolerance between the sealed bearing 9 and the adjusting shaft 16 is H7 / k6. The double-row angular contact ball bearing can simultaneously withstand radial and axial loads, preventing damage to a single bearing due to uneven stress. The stainless steel dust cover prevents seawater and sediment from entering the bearing, and the marine-grade grease (seawater resistant, dropping point ≥180℃) reduces internal friction.

[0020] In this scheme, both the transmitting coil 13 and the receiving coil 14 are wound with copper enameled wire. The distance between the transmitting coil 13 and the receiving coil 14 is controlled at 5~10mm. The conductivity of copper enameled wire (≥58MS / m) is much higher than that of ordinary wire, which can reduce the current loss of the coil. The distance of 5~10mm is controlled within the high-efficiency coupling range of magnetic coupling resonance. At this time, the magnetic field leakage between the coils is ≤10%, and the coupling efficiency is the highest.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength propeller for easily adjustable marine equipment, characterized in that, The device includes a mounting base (1) and a propeller hub (2). A bearing seat (3) is provided between the mounting base (1) and the propeller hub (2). A sealing ring (4) is provided on the outer side of the propeller hub (2). An elastic sealing sleeve (5) is provided at one end of the sealing ring (4). A sealing cone ring (6) is provided at one end of the elastic sealing sleeve (5). A telescopic device (7) and a guide mechanism are provided between the sealing ring (4) and the sealing cone ring (6). An adjusting shaft (16) is provided on the outer side of the propeller hub (2). A propeller blade (8) is provided at one end of the adjusting shaft (16). An arc groove is provided at one end of the propeller blade (8). A sealing bearing (9) is provided between the adjusting shaft (16) and the propeller hub (2). Multiple adjusting shafts (16) are arranged in a ring array with the propeller hub (2) as the axis. A sealing groove is provided at one end of the propeller hub (2). A magnetic coupling resonant wireless power supply unit is provided between the sealing groove and the mounting base (1).

2. The high-strength propeller for easily adjustable marine equipment according to claim 1, characterized in that, The guiding mechanism includes a guide cylinder (10) and a guide rod (11). The guide cylinder (10) is installed at one end of the sealing ring (4), and the guide rod (11) is installed at one end of the sealing cone ring (6). The guide rod (11) extends into the guide cylinder (10).

3. A high-strength propeller for easily adjustable marine equipment according to claim 1, characterized in that, The magnetically coupled resonant wireless power supply unit includes a high-frequency inverter (12), a transmitting coil (13), a receiving coil (14), and a rectifier and filter module (15). The high-frequency inverter (12) and the transmitting coil (13) are both installed on the inner wall of the mounting base (1), and the receiving coil (14) and the rectifier and filter module (15) are both installed on the inner wall of the sealing groove.

4. A high-strength propeller for easily adjustable marine equipment according to claim 1, characterized in that, The telescopic device (7) is an electric push rod.

5. A high-strength propeller for easily adjustable marine equipment according to claim 1, characterized in that, The elastic sealing sleeve (5) is integrally molded from fluororubber material. Multiple arc-shaped reinforcing ribs are evenly distributed along the axial direction on the inner wall of the elastic sealing sleeve (5). The two ends of the elastic sealing sleeve (5) are fixedly connected to the sealing ring (4) and the sealing cone ring (6) respectively through a vulcanization process. The sealing pressure of the connection surface is ≥0.8MPa.

6. A high-strength propeller for easily adjustable marine equipment according to claim 1, characterized in that, The sealed bearing (9) is a double-row angular contact ball bearing. The outer ring of the sealed bearing (9) is provided with a stainless steel dust cover, and the interior of the sealed bearing (9) is filled with marine-grade grease. The fit tolerance between the sealed bearing (9) and the adjusting shaft (16) is H7 / k6.

7. A high-strength propeller for easily adjustable marine equipment according to claim 3, characterized in that, Both the transmitting coil (13) and the receiving coil (14) are made of copper enameled wire, and the distance between the transmitting coil (13) and the receiving coil (14) is controlled at 5~10mm.

Images