Stable ship propeller flow guiding device

Abstract

The utility model relates to the technical field of ship propeller parts, in particular to a stable ship propeller flow guide device which comprises a flow guide cover, propeller blades, a flow guide plate, a rotation adjusting device, an expansion device and an angle adjusting device. Two sets of supporting plates are installed on the front end face of the flow guide cover through the rotation adjusting device, two sets of fixing plates are installed between the two sets of supporting plates through the angle adjusting device, movement of a sliding block is transmitted to the flow guide plate through a connecting rod, the flow guide plate is unfolded or folded, and the unfolding or folding action of the flow guide plate is limited by the fixing rod. The guide plates are ensured to move along the grooves in the cutters all the time, the unfolding degree of the guide plates can be adjusted according to the actual situation, flow field distribution around the propeller is optimized, turbulent flow is reduced, the propelling efficiency is improved, and noise and vibration generated when water flow impacts the propeller are reduced through the better streamline design.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship propeller part technical field, concretely is a kind of stable ship propeller flow guide device. BACKGROUND

[0002] It is known that ship is the general term of various ships, ship is the transport vehicle that can navigate or park in water area and carry out operation, and has different technical performance, equipment and structural type according to different use requirements.Screw propeller is the important accessory on ship, when ship works under water, ship relies on screw propeller rotation to cut off water flow and generates forward propulsion power, and in order to increase the propulsion of screw propeller, flow guide device is added when ship screw propeller is installed, realizes the water flow around ship screw propeller is guided.

[0003] The adjusting mode of existing flow guide device is relatively extensive, cannot accurately adjust the position of flow guide plate according to actual situation, leads to the poor flow field optimization effect, and the adaptability under different navigation conditions is poor, cannot be flexibly switched between high-speed and low-speed navigation, limit its application in complex sea conditions, and winding often affects the normal work of screw propeller, easily lead to screw propeller to be extra burdened, lead to its safety and stability are lower. UTILITY MODEL CONTENT

[0004] (1) the technical problem solved

[0005] In view of the deficiencies of prior art, the utility model provides a kind of stable ship propeller flow guide device.

[0006] (2) technical scheme

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A stable ship propeller fairing device, including fairing, propeller blade, fairing plate, rotation adjusting device, expansion device and angle adjusting device, the fairing is rotatably installed with the propeller blade, the front end surface of the fairing is installed with two sets of support plates through the rotation adjusting device, two sets of the support plate are installed with two sets of fixed plates through the angle adjusting device between, two sets of the fixed plate are installed with two sets of the fairing plate of symmetrical design between through the expansion device, the expansion device includes fixed block, cutter, rectangular groove, threaded rod, first motor, sliding block, connecting rod, recess and fixed rod, two sets of the fixed plate are connected with the fixed block through support rod between, one end away from the fairing of two sets of the fixed plate is fixedly installed with the cutter, the fixed block is provided with the rectangular groove that penetrates both ends side wall, the threaded rod is rotatably installed in the rectangular groove, the first motor is installed on the threaded rod end away from the cutter and penetrates the rectangular groove side wall, the threaded rod is installed with the sliding block, the left and right two ends side wall of the sliding block is hinged with two sets of the connecting rod, two sets of the connecting rod away from the sliding block one end is respectively hinged with the side wall of two sets of the fairing plate, the cutter is symmetrically provided with two sets of recesses on the side close to the fairing, two sets of the recess are fixedly installed with the fixed rod, two sets of the fixed rod are rotatably connected with one end of two sets of the fairing plate respectively.

[0008] In order to adjust the rotation angle of the fairing plate to the fairing, the utility model improves that, the rotation adjusting device includes fixed seat, rotating ring, gear ring, second motor and driving gear, the inside wall of the front end of the fairing is fixedly installed with fixed seat, the rotating ring is rotatably installed in the fixed seat, the gear ring is fixedly installed on the end away from the rotating ring of the rotating ring, the top end of the fairing is installed with the second motor, the output end of the second motor is installed with the driving gear, the driving gear is meshed with the gear ring, the upper and lower ends of the side away from the rotating ring of the gear ring are fixedly connected with the corresponding support plate side wall.

[0009] In order to facilitate the adjustment of the angle of the fairing plate, the utility model improves that, the angle adjusting device includes driving shaft and third motor, the cutter is rotatably installed with the driving shaft, the upper and lower ends of the driving shaft are rotatably connected with two sets of the fixed plate and two sets of the support plate and penetrate two sets of the fixed plate and two sets of the support plate, the top end of the driving shaft is rotatably connected with the third motor through the bearing and penetrates the support plate.

[0010] In order to guide the movement of the sliding block, the utility model improves that, two sets of guide rods are symmetrically installed in the rectangular groove with the central axis of the threaded rod, two sets of the guide rod are slidably connected with the sliding block.

[0011] Preferably, the utility model improves that, the cutter is conical design.

[0012] To ensure the stability and accuracy of the operation of the first motor, the second motor, and the third motor, this utility model is improved by making the first motor, the second motor, and the third motor all servo motors.

[0013] To reduce resistance, this invention features an improvement where the ends of both sets of support plates near the cutter are designed with rounded corners.

[0014] Preferably, the present invention is improved in that the outer walls of the first motor, the second motor and the third motor are all equipped with protective shells.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a stable propeller guide device for ships, which has the following beneficial effects:

[0017] This stable propeller guide device, through an extension mechanism, drives a threaded rod to rotate via a first motor. This causes a slider to move along the threaded rod within a rectangular groove, which is then transmitted to the guide plate via a connecting rod. This precisely controls the expansion or contraction of the guide plate. The guide plate can adjust its expansion degree according to actual conditions, optimizing the flow field distribution around the propeller, reducing turbulence, and improving propulsion efficiency.

[0018] This stable propeller deflector, through a rotation adjustment device and a second motor-driven gear transmission, can precisely adjust the angle of the deflector plate relative to the deflector shield, achieving fine control of the flow field. Its superiority is especially evident during low-speed navigation or complex operations. Furthermore, the rotation of the cutter can cut off entangled materials to a certain extent, reducing the burden on the propeller blades and improving the reliability, safety, and stability of the equipment and the ship's operation.

[0019] This stable propeller deflector, through its angle adjustment device, allows the third motor to precisely control the rotation angle of the drive shaft, thereby achieving precise adjustment of the deflector angle. This ensures that the flow field around the propeller is in optimal condition, enabling the ship to achieve higher speeds or longer ranges with the same power. The optimized flow field and better handling performance help improve the ship's stability in various sea conditions and enhance navigation safety. Attached Figure Description

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

[0021] Figure 2 In this utility model Figure 1 A magnified structural diagram of part A;

[0022] Figure 3 It is the half profile solid structure schematic diagram of the flow guide plate of the utility model.

[0023] Figure 4 It is the partial B place enlarged structure schematic diagram of the utility model. Figure 3

[0024] In the drawing: 1, flow guide cover; 2, propeller blade; 3, flow guide plate; 4, support plate; 5, fixed plate; 6, fixed block; 7, cutter; 8, rectangular slot; 9, threaded rod; 10, first motor; 11, sliding block; 12, connecting rod; 13, recess; 14, fixed rod; 15, fixed seat; 16, rotating ring; 17, gear ring; 18, second motor; 19, driving gear; 20, driving shaft; 21, third motor; 22, guide rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-4 ​The utility model provides a stable ship propeller fairwater, including fairwater 1, propeller blade 2, fairwater board 3, rotation adjusting device, extension device and angle adjusting device, the propeller blade 2 is rotatably installed in the fairwater 1, the front end surface of fairwater 1 is installed with two groups of support plate 4 through rotation adjusting device, two groups of support plate 4 are installed with two groups of fixed plate 5 through angle adjusting device between, two groups of fixed plate 5 are installed with two groups of symmetric design fairwater board 3 between through extension device, the extension device includes fixed block 6, cutter 7, rectangular groove 8, threaded rod 9, first motor 10, sliding block 11, connecting rod 12, recess 13 and fixed rod 14, the fixed block 6 is connected with through the support rod between two groups of fixed plate 5, the cutter 7 is fixedly installed with between two groups of fixed plate 5 away from the one end of fairwater 1, the rectangular groove 8 of through both ends side wall is seted up on the fixed block 6, the threaded rod 9 is rotatably installed in the rectangular groove 8, the first motor 10 is installed with through the rectangular groove 8 side wall on the threaded rod 9 away from the cutter 7 one end, the threaded rod 9 is screw mounted with sliding block 11, the left and right two ends side wall of sliding block 11 are hinged with two groups of connecting rod 12, two groups of connecting rod 12 are respectively hinged with the side wall of two groups of fairwater board 3 away from sliding block 11 one end, the cutter 7 is symmetrically seted up with two groups of recess 13 on the side close to fairwater 1, two groups of fixed rod 14 are fixedly installed in two groups of recess 13, two groups of fixed rod 14 are rotatably connected with one end of two groups of fairwater board 3 respectively, in the embodiment, when needing to adjust the opening angle of fairwater board 3 when using, through the PLC control system of ship and starts first motor 10, drives threaded rod 9 to rotate, the rotation of threaded rod 9 will make sliding block 11 move along the screw thread in rectangular groove 8, the movement of sliding block 11 is passed to fairwater board 3 through connecting rod 12, causes fairwater board 3 to spread or to gather, the spreading or gathering action of fairwater board 3 is limited by fixed rod 14, ensures that fairwater board 3 always moves along the recess 13 on cutter 7, fairwater board 3 can adjust its spreading degree according to actual conditions, optimizes the flow field distribution around propeller, reduces turbulence, improves the propulsion efficiency,The better streamline design reduces the noise and vibration generated when the water flow hits the propeller, improves the comfort and safety of navigation, and the cutter 7 can better guide the water flow, reduce turbulence and vortex, thereby optimizing the flow field around the propeller, which helps to improve the propulsion efficiency and reduce energy loss. The cutter 7 can cut off the debris such as seaweed, plastic bags, etc. approaching the propeller, which helps to improve the propulsion efficiency and reduce energy loss. The angle of the two groups of guide plates 3 relative to the fairing 1 can be adjusted by the rotation adjusting device, and the relative angle between the two groups of fixed plates 5 can be adjusted by the angle adjusting device to adapt to different navigation conditions. By using the extension device and the angle adjusting device together, the fairing device can adapt to different navigation conditions such as different speeds, loads and water environments, reduce cavitation phenomenon and optimize water flow distribution, not only improve the propulsion efficiency, but also reduce the wear of the propeller blade 2, prolong the service life of the propeller blade 2.

[0027] In actual use, the rotation angle of the guide plate 3 relative to the fairing 1 is further adjusted. In this embodiment, the rotation adjusting device includes a fixed seat 15, a rotating ring 16, a gear ring 17, a second motor 18 and a driving gear 19. The fixed seat 15 is fixedly installed on the inner side wall of the front end of the fairing 1. The rotating ring 16 is rotatably installed in the fixed seat 15. The gear ring 17 is fixedly installed on the end of the rotating ring 16 away from the fixed seat 15. The second motor 18 is installed on the top end of the fairing 1. The driving gear 19 is installed on the output end of the second motor 18. The driving gear 19 and the gear ring 17 are meshed and connected. The upper and lower ends of the side wall of the gear ring 17 away from the rotating ring 16 are respectively fixedly connected with the corresponding support plates 4. The second motor 18 is started, and the second motor 18 drives the driving gear 19 to rotate. The driving gear 19 drives the gear ring 17 meshed therewith to rotate. The rotation of the gear ring 17 drives the rotating ring 16 to rotate in the fixed seat 15. The rotation of the rotating ring 16 makes the two groups of support plates 4 rotate together with the gear ring 17, thereby changing the position of the guide plate 3 relative to the fairing 1. By driving the gear transmission mode of the second motor 18, the rotation of the extension device can be driven, the cutter 7 can be rotated and operated, the entanglement can be cut to a certain extent, the burden of the propeller blade 2 caused by the entanglement can be reduced, and the angle of the guide plate 3 relative to the fairing 1 can be adjusted as needed to control the flow field.

[0028] In actual use, further adjust the angle of the flow guide plate 3, in this embodiment, the angle adjusting device includes a drive shaft 20 and a third motor 21, the drive shaft 20 is rotatably installed in the cutter 7, the upper and lower ends of the drive shaft 20 penetrate two groups of the fixed plate 5 and two groups of the support plate 4 to rotate, the top end of the drive shaft 20 penetrates the support plate 4 through the bearing to install the third motor 21, start the third motor 21, the output shaft of the third motor 21 starts to rotate, drives the drive shaft 20 to rotate synchronously, the rotation of the drive shaft 20 is transmitted to the flow guide plate 3 through the connection of the fixed plate 5 and the support plate 4, according to the rotation direction of the third motor 21, the flow guide plate 3 can be inclined forward or backward, change its angle relative to the water flow, by controlling the forward and reverse rotation and the speed of the third motor 21, the angle of the flow guide plate 3 can be accurately adjusted, the third motor 21 can accurately control the rotation angle of the drive shaft 20, so as to realize the accurate adjustment of the angle of the flow guide plate 3, ensure that the flow field around the propeller is in the best state.

[0029] In actual use, further guide the movement of the sliding block 11, in this embodiment, two groups of guide rods 22 are symmetrically installed in the rectangular groove 8 with the central axis of the threaded rod 9, both groups of the guide rods 22 are slidably connected with the sliding block 11, the guide rod 22 can effectively guide the linear motion of the sliding block 11, avoid the sliding block 11 from deviating or shaking when the threaded rod 9 rotates, ensure that the sliding block 11 moves smoothly along the predetermined path, the existence of the guide rod 22 makes the movement trajectory of the sliding block 11 more certain, reduces the unstable factors caused by mechanical clearance or external force interference, enhances the stability and reliability of the whole system.

[0030] Preferably, in this embodiment, the cutter 7 is designed as a cone, the conical cutter 7 can cut the water flow more smoothly, reduce the resistance of the water flow to the device, thereby reducing the energy demand of the propulsion system and improving the economy of the ship, the conical design is more solid in structure and can withstand greater water flow pressure without deforming, enhancing the overall structural strength of the device.

[0031] In actual use, further ensure the stability and accuracy of the operation of the first motor 10, the second motor 18 and the third motor 21, in this embodiment, the first motor 10, the second motor 18 and the third motor 21 are all servo motors, which can control position, speed and torque with high precision, the servo motor adopts closed loop control and has good stability, which can avoid problems such as stall and vibration, improving the stability and accuracy of the operation of the first motor 10, the second motor 18 and the third motor 21.

[0032] In actual use, further reduce resistance, in the embodiment, two groups of the supporting plate 4 close to the one end of the cutter 7 are all designed as round angle, the round angle design can reduce the turbulence and vortex formed when water flow contacts the supporting plate 4, thereby reducing the resistance of water flow to the supporting plate 4.

[0033] Preferably, in the embodiment, the outer wall of the first motor 10, the second motor 18 and the third motor 21 is all installed with a protective shell, in the marine environment, salt and seawater can cause corrosion to the motor, the protective shell can effectively isolate the external environment, reduce the risk of corrosion, prolong the service life of the motor.

[0034] In order to explain the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects, etc. of the present application, the specific embodiments listed below are combined with the drawings for detailed description. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A stable propeller guide device for ships, comprising a guide shield (1), propeller blades (2), a guide plate (3), a rotation adjustment device, an extension device, and an angle adjustment device, characterized in that: The propeller blade (2) is rotatably installed inside the fairing (1). Two sets of support plates (4) are installed on the front end face of the fairing (1) through the rotation adjustment device. Two sets of fixing plates (5) are installed between the two sets of support plates (4) through the angle adjustment device. Two sets of symmetrically designed fairing plates (3) are installed between the two sets of fixing plates (5) through the expansion device. The expansion device includes a fixing block (6), a cutter (7), a rectangular groove (8), a threaded rod (9), a first motor (10), a slider (11), a connecting rod (12), a groove (13), and a fixing rod (14). The fixing block (6) is connected between the two sets of fixing plates (5) through the support rod. The cutter (7) is fixedly installed at the end of the two sets of fixing plates (5) away from the fairing (1). The upper part has a rectangular groove (8) that runs through both sides of the cutter (7). The threaded rod (9) is rotatably installed in the rectangular groove (8). The first motor (10) is installed at the end of the threaded rod (9) that is away from the cutter (7) through the side wall of the rectangular groove (8). The slider (11) is threaded onto the threaded rod (9). Two sets of connecting rods (12) are hinged to the left and right side walls of the slider (11). The ends of the two sets of connecting rods (12) that are away from the slider (11) are respectively hinged to the side walls of the two sets of guide plates (3). The cutter (7) has two sets of grooves (13) symmetrically opened on the side near the guide shroud (1). The fixing rod (14) is fixedly installed in both sets of grooves (13). The two sets of fixing rods (14) are respectively rotatably connected to one end of the two sets of guide plates (3).

2. The stable ship propeller deflector according to claim 1, characterized in that: The rotation adjustment device includes a fixed base (15), a rotating ring (16), a gear ring (17), a second motor (18), and a drive gear (19). The fixed base (15) is fixedly installed on the inner side wall of the front end of the flow guide (1). The rotating ring (16) is rotatably installed inside the fixed base (15). The gear ring (17) is fixedly installed at one end of the rotating ring (16) away from the fixed base (15). The second motor (18) is installed at the top of the flow guide (1). The drive gear (19) is installed at the output end of the second motor (18). The drive gear (19) and the gear ring (17) are meshed. The upper and lower ends of the side of the gear ring (17) away from the rotating ring (16) are fixedly connected to the corresponding side wall of the support plate (4).

3. A stable ship propeller deflector according to claim 2, characterized in that: The angle adjustment device includes a drive shaft (20) and a third motor (21). The drive shaft (20) is rotatably installed inside the cutter (7). The upper and lower ends of the drive shaft (20) are rotatably connected to the two sets of fixed plates (5) and the two sets of support plates (4) through the two sets of fixed plates (5). The top end of the drive shaft (20) is connected to the third motor (21) through the support plate (4) via a bearing.

4. A stable ship propeller deflector according to claim 3, characterized in that: Two sets of guide rods (22) are symmetrically installed in the rectangular groove (8) along the central axis of the threaded rod (9), and both sets of guide rods (22) are slidably connected to the slider (11).

5. A stable ship propeller deflector according to claim 4, characterized in that: The cutter (7) is tapered.

6. A stable ship propeller deflector according to claim 5, characterized in that: The first motor (10), the second motor (18) and the third motor (21) are all servo motors.

7. A stable ship propeller deflector according to claim 6, characterized in that: Both sets of support plates (4) have rounded corners at the end near the cutter (7).

8. A stable ship propeller deflector according to claim 7, characterized in that: The outer walls of the first motor (10), the second motor (18) and the third motor (21) are all fitted with protective shells.

Images