Adjustable propeller for ship

Abstract

The utility model belongs to the technical field of marine propellers, and particularly discloses an adjustable marine propeller which comprises a shell, a plurality of blades are arranged on the outer side of the shell, and an adjusting assembly is arranged in the shell. The adjusting assembly comprises a driving part and an adjusting part, the adjusting part comprises a sliding block, the outer end of the sliding block is fixedly connected with a plurality of connecting blocks, one end of each connecting block is connected with a rotating rod, and one end of each rotating rod is connected with a rod body; the driving assembly comprises a hydraulic cylinder, the hydraulic cylinder is located in the shell, the output end of the hydraulic cylinder is fixedly connected with a push plate, and the interior of the shell is fixedly connected with a connecting rod. Through the arrangement of the adjusting assembly, during high-speed navigation, the pitch angle of the blades can be dynamically adjusted according to the water flow resistance and the engine load; the effects of reducing the water flow resistance of the propeller and reducing the load of the propeller motor are achieved, and the problems of heating and power loss caused by high-rotating-speed overload of the propeller motor are effectively solved.

Description

Technical Field

[0001] This application relates to the field of marine propeller technology, and more specifically, to an adjustable marine propeller. Background Technology

[0002] The propeller is the core component of a ship's propulsion system. It rotates, pushing water currents to generate a reaction force, propelling the ship forward or backward. It mainly consists of blades, a hub, and a shaft. The blades have an airfoil-shaped cross-section, and their shape and angle directly affect thrust efficiency. Propellers are typically made of copper alloy, which is resistant to seawater corrosion. During operation, the propeller transmits engine power through the shaft, using hydrodynamic principles to propel the ship.

[0003] The patent CN221809824U discloses a marine propeller. This patent facilitates the disassembly of individual propeller blades and allows for the fixed installation of individual propeller blades in the same manner, making it easy to replace individual propeller blades, saving propeller operating costs and reducing resource waste.

[0004] While this patent facilitates the disassembly and replacement of individual propeller blades, the fixed-pitch structure of the propeller means that at high speeds, the increased water resistance at high rotational speeds leads to increased motor load, resulting in problems such as motor overheating and increased power loss. Prolonged operation under overload conditions will accelerate the aging of internal insulation and wear of mechanical components, shortening the motor's lifespan and increasing ship maintenance costs and the risk of failure. Utility Model Content

[0005] To address the aforementioned problems, this application provides an adjustable marine propeller. The adjustable marine propeller provided in this application employs the following technical solution:

[0006] An adjustable marine propeller includes a housing, a plurality of blades on the outer side of the housing, and an adjustment assembly inside the housing.

[0007] The adjustment component includes a drive component and an adjustment component. The adjustment component includes a slider. Multiple connecting blocks are fixedly connected to the outer end of the slider. One end of each of the multiple connecting blocks is connected to a rotating rod. One end of each rotating rod is connected to a rod body.

[0008] The number of rods is set to four.

[0009] Through the above technical solution, the adjustment component can dynamically adjust the blade pitch angle according to the water flow resistance and engine load during high-speed navigation, thereby reducing the water flow resistance of the propeller and reducing the load on the propeller motor, effectively avoiding the problem of heat generation and power loss caused by high-speed overload of the propeller motor.

[0010] Furthermore, the driving component includes a hydraulic cylinder located inside the housing, with a push plate fixedly connected to the output end of the hydraulic cylinder.

[0011] Furthermore, a connecting rod is fixedly connected inside the housing, and the slider is slidably connected to the connecting rod.

[0012] Furthermore, the push plate is fixedly connected to one end of the slider, and the push plate is slidably connected to the connecting rod.

[0013] Furthermore, each end of the housing is rotatably connected to a rotating disk, each rod is fixedly connected to the corresponding rotating disk, and each blade is fixedly connected to the outer side of the corresponding rotating disk.

[0014] Furthermore, a shaft is fixedly connected to the rear side of the housing, and multiple blades are fixedly connected to the outer wall of the housing, with the multiple blades located on one side of the blades.

[0015] Through the above technical solution, multiple blades prevent debris from entangled and causing sudden changes in propeller load, avoiding the risks of engine overload, propeller damage, or even loss of power for the ship. At the same time, they enhance propulsion efficiency, keep the blade surface clean, reduce water flow resistance caused by debris, and ensure that the propeller operates in a stable and efficient state.

[0016] Furthermore, the outer ends of multiple blades are serrated.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] This invention, through the setting of the adjustment component, can dynamically adjust the blade pitch angle according to the water flow resistance and engine load during high-speed navigation, thereby reducing the water flow resistance of the propeller and reducing the load on the propeller motor, effectively avoiding the problem of heat generation and power loss caused by high-speed overload of the propeller motor.

[0019] This invention, through the arrangement of multiple blades, prevents debris from entangled and causing sudden changes in propeller load, avoiding the risks of engine overload, propeller damage, or even loss of power for the ship. At the same time, it enhances propulsion efficiency, keeps the blade surface clean, reduces water flow resistance caused by debris adhesion, and ensures that the propeller operates in a stable and efficient state. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the shell of this utility model;

[0023] Figure 4This is a plan view of the present invention;

[0024] Figure 5 This is a partial structural schematic diagram of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Blade; 3. Shaft; 4. Blade; 5. Hydraulic cylinder; 6. Connecting rod; 7. Push plate; 8. Slider; 9. Rotating rod; 10. Rod body; 11. Connecting block; 12. Rotary disk. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] Reference Figures 1-5 An adjustable marine propeller includes a housing 1, a plurality of blades 2 on the outer side of the housing 1, and an adjustment assembly inside the housing 1.

[0028] The adjustment component includes a drive component and an adjustment component. The adjustment component includes a slider 8. Multiple connecting blocks 11 are fixedly connected to the outer end of the slider 8. One end of each of the multiple connecting blocks 11 is connected to a rotating rod 9. One end of each rotating rod 9 is connected to a rod body 10.

[0029] The number of rods 10 is set to four.

[0030] Reference Figures 3-5 The driving component includes a hydraulic cylinder 5, which is located inside the housing 1. A push plate 7 is fixedly connected to the output end of the hydraulic cylinder 5. A connecting rod 6 is fixedly connected inside the housing 1. A slider 8 is slidably connected to the connecting rod 6. The push plate 7 is fixedly connected to one end of the slider 8 and slidably connected to the connecting rod 6.

[0031] During actual ship navigation, when the ship is fully loaded with cargo, the propeller needs to match the engine's low-speed, high-torque output characteristics. At this time, the control system sends a command to the hydraulic cylinder 5. The piston of the hydraulic cylinder 5 extends under hydraulic oil pressure, pushing the push plate 7 to slide along the connecting rod 6. Since the push plate 7 is fixedly connected to the slider 8, the slider 8 slides accordingly. The connecting block 11 at the outer end of the slider 8 drives the rotating rod 9 to move forward. Because the two ends of the rod 10 are fixedly connected to the rotating disk 12 and the rotating rod 9 respectively, when the rotating rod 9 moves forward, the rod 10 pushes the rotating disk 12 to rotate within the housing 1, thereby increasing the pitch angle of the propeller blades 2 fixed to the outside of the rotating disk 12. At this time, the propeller operates with a large pitch, generating greater thrust at low engine speeds, matching the engine's low-speed, high-torque output characteristics, meeting the need to overcome greater navigation resistance when the ship is fully loaded, and ensuring the ship navigates at a stable speed.

[0032] This invention, through the setting of the adjustment component, can dynamically adjust the blade pitch angle according to the water flow resistance and engine load during high-speed navigation, thereby reducing the water flow resistance of the propeller and reducing the load on the propeller motor, effectively avoiding the problem of heat generation and power loss caused by high-speed overload of the propeller motor.

[0033] Reference Figures 3-4 The housing 1 is rotatably connected to a rotating disk 12 at multiple ends, each rod 10 is fixedly connected to the corresponding rotating disk 12, and each blade 2 is fixedly connected to the outer side of the corresponding rotating disk 12.

[0034] To prevent water from flowing into the connection between the rotating disk 12 and the housing 1 when the rotating disk 12 is rotating, an O-ring (existing technology, not shown in the figure) is installed between the mating surfaces of the rotating disk 12 and the housing 1 to fill the static gap and prevent fluid from leaking from the gaps in the mounting surface.

[0035] Reference Figures 1-2 A shaft 3 is fixedly connected to the rear side of the housing 1, and multiple blades 4 are fixedly connected to the outer wall of the housing 1. The multiple blades 4 are located on one side of the blade 2, and the outer ends of the multiple blades 4 are all serrated.

[0036] When the propeller is working, the shaft 3 is connected to the ship's power system and drives the shell 1 to rotate. The blades 4, which are fixed to the outer wall of the shell 1, rotate synchronously. Since the outer end of the blades 4 is serrated, during high-speed rotation, the edge of the serrations violently cuts through the debris in the water (such as fishing nets, aquatic plants, floating garbage, etc.). Through the tearing and shearing of the serrations, the debris is broken into small pieces, preventing the debris from getting tangled on the propeller blades 2.

[0037] By setting multiple blades 4, it is possible to prevent debris from entangled and causing sudden changes in propeller load, thus avoiding the risk of engine overload, propeller damage, or even loss of power for the ship. At the same time, it enhances propulsion efficiency, keeps the surface of the blades 2 clean, reduces water flow resistance caused by debris, and ensures that the propeller operates in a stable and efficient state.

[0038] Working principle: When the adjustable marine propeller is working, the shaft 3 is connected to the ship's power system, providing rotational power to the propeller, which drives the housing 1 and its internal components and the outer blades 2 to rotate together. During navigation, the control system sends commands to the adjustment components according to the ship's operating conditions (such as load capacity and speed requirements). When the ship is fully loaded and needs to match the engine's low speed and high torque output, the hydraulic cylinder 5 receives the command, and its piston extends under the action of hydraulic oil pressure, pushing the push plate 7 to slide along the connecting rod 6; since the push plate 7 is fixedly connected to the slider 8, the slider 8 slides accordingly, and the connecting block 11 at the outer end of the slider 8 drives the rotating rod 9 to move forward, which in turn causes the rod 10, which is fixedly connected to the rotating rod 9 and the rotating disk 12, to push the rotating disk 12 to rotate, thereby increasing the pitch angle of the blades 2 to generate greater thrust at low speeds. If high-speed navigation is required, the pitch angle is adjusted in the opposite direction to reduce water resistance and reduce the load on the motor.

[0039] At this time, the serrated blade 4 fixed on the outer wall of the shell 1 rotates together with the propeller. During the high-speed rotation, the serrated edge cuts and breaks up the fishing nets, weeds and other debris it comes into contact with, preventing the debris from getting tangled in the propeller blade 2, reducing the water flow resistance caused by the attachment of debris, maintaining the stable and efficient operation of the propeller, ensuring the safety of ship navigation, and avoiding engine overload or propeller damage due to sudden load changes.

[0040] 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. An adjustable marine propeller, characterized in that, include: The housing (1) has multiple blades (2) on its outer side and an adjustment assembly inside its interior. The adjustment component includes a driving component and an adjustment component. The adjustment component includes a slider (8). The outer end of the slider (8) is fixedly connected to a plurality of connecting blocks (11). One end of each of the plurality of connecting blocks (11) is connected to a rotating rod (9). One end of each rotating rod (9) is connected to a rod body (10). The number of rods (10) is set to four.

2. The adjustable marine propeller according to claim 1, characterized in that: The driving component includes a hydraulic cylinder (5), which is located inside the housing (1), and a push plate (7) is fixedly connected to the output end of the hydraulic cylinder (5).

3. An adjustable marine propeller according to claim 1, characterized in that: The housing (1) is fixedly connected to a connecting rod (6), and the slider (8) is slidably connected to the connecting rod (6).

4. An adjustable marine propeller according to claim 2, characterized in that: The push plate (7) is fixedly connected to one end of the slider (8), and the push plate (7) is slidably connected to the connecting rod (6).

5. An adjustable marine propeller according to claim 1, characterized in that: The housing (1) is rotatably connected to a rotating disk (12) at multiple ends. Each rod (10) is fixedly connected to the corresponding rotating disk (12), and each blade (2) is fixedly connected to the outer side of the corresponding rotating disk (12).

6. An adjustable marine propeller according to claim 1, characterized in that: A shaft (3) is fixedly connected to the rear side of the housing (1), and a plurality of blades (4) are fixedly connected to the outer wall of the housing (1), with the plurality of blades (4) located on one side of the blade (2).

7. An adjustable marine propeller according to claim 6, characterized in that: The outer ends of all of the blades (4) are serrated.

Images