CN220809783U - Bionic ship rudder of sectional type imitative duck web structure - Google Patents
Bionic ship rudder of sectional type imitative duck web structure Download PDFInfo
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- CN220809783U CN220809783U CN202322795198.4U CN202322795198U CN220809783U CN 220809783 U CN220809783 U CN 220809783U CN 202322795198 U CN202322795198 U CN 202322795198U CN 220809783 U CN220809783 U CN 220809783U
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- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
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Abstract
A bionic ship rudder of a sectional type imitative duck web structure belongs to the technical field of ship propulsion devices. The utility model solves the technical problem that the rudder angle of the existing ship rudder cannot be adjusted according to the flooding depth of the rudder. The technical key points are as follows: the lower rudder stock and the upper rudder stock are connected together through a coupler, the upper part of the upper rudder stock is rotatably mounted with a support arm at the tail part of the propeller, an inner rotor driving motor is fixedly mounted on the support arm at the tail part of the propeller, the output end of the inner rotor driving motor is connected with the upper rudder stock through a transmission assembly, an upper rudder blade is fixedly connected with the upper rudder stock through a connecting flange, an outer rotor driving motor is fixedly connected with the lower rudder stock, a shell of the outer rotor driving motor is fixedly connected with the lower rudder blade, and the upper rudder blade and the lower rudder blade form a duck web structure. According to the utility model, the rudder is divided into the upper rudder blade and the lower rudder blade, and the rudder angles of the upper rudder blade and the lower rudder blade are adjusted according to the flooding depth of the rudder, so that the absorption and the utilization of the wake flow of the propeller are improved, and the rudder efficiency is improved.
Description
Technical Field
The utility model relates to a bionic ship rudder, in particular to a bionic ship rudder of a sectional type duck web-like structure, and belongs to the technical field of ship propulsion devices.
Background
When the rudder angle is zero (namely, when the ship is sailed in a straight line), the generated drag resistance is higher, and when the rudder angle is increased from zero, the increase amplitude of the drag resistance is not large, so that the control performance of the ship cannot be effectively improved; when the rudder angle of the common rudder is 35 degrees, the turning radius of the ship is higher, so that the common rudder has a great room for improvement.
At present, most ships use a common steering device, and the steering efficiency of a common rudder is generally low, especially when the ship sails at a low speed, the steering efficiency is very poor. The reference section of the common rudder extends from the wing span direction of the wing section, so that the length of the ship rudder leading edge is equal to the length of the ship rudder trailing edge, and the upper surface and the lower surface of the ship rudder are horizontal. However, the hydrodynamic performance of the rudder of the high speed vessel will deteriorate due to the actual flow separation (i.e. stall) on the rudder.
When the rudder angle of the ship is larger at a higher speed, the general ship rudder has larger vortex separation phenomenon near the upper part of the suction surface of the ship rudder, so that the steering performance of the ship rudder is rapidly reduced, cavitation is increased, the steering moment of the general rudder is large, and the low-speed rudder efficiency is low.
The invention patent application with the publication number of CN 114954890A discloses a bionic ship rudder with a duck web-like structure, which can increase the stall angle of the ship rudder, improve the lift force generated by the ship rudder under the same rudder angle and further improve the steering performance of the ship rudder. Under the same operation working condition, the bionic ship rudder can reduce negative effects caused by cavitation and the like of the ship rudder, and the service life of the ship rudder is prolonged. But the rudder angle cannot be adjusted according to the flooding depth of the rudder, and the absorption and the utilization of the wake flow of the propeller are still to be improved. Therefore, a need exists for a segmented simulated duck web rudder for a ship to improve absorption and utilization of the wake flow of the propeller, thereby improving rudder efficiency.
Disclosure of utility model
In view of the facts, the utility model designs the bionic ship rudder with the sectional type duck web-like structure, the rudder is divided into an upper rudder blade and a lower rudder blade, and the absorption and the utilization of the wake flow of the propeller are improved in a mode of adjusting the rudder angles of the upper rudder blade and the lower rudder blade according to the flooding depth of the rudder, so that the rudder efficiency is improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
A bionic ship rudder of a sectional type imitative duck web structure comprises an upper rudder stock, a lower rudder stock, an upper rudder blade, a lower rudder blade, an inner rotor driving motor, an outer rotor driving motor, a connecting flange, a coupler and a transmission assembly;
The lower rudder stock and the upper rudder stock are connected together through a coupler, the upper part of the upper rudder stock and the support arm at the tail part of the propeller are rotatably installed, the inner rotor driving motor is fixedly installed on the support arm at the tail part of the propeller, the output end of the inner rotor driving motor is connected with the upper rudder stock through a transmission assembly, the upper rudder blade is fixedly connected with the upper rudder stock through a connecting flange, the outer rotor driving motor is fixedly connected with the lower rudder stock, the outer shell of the outer rotor driving motor is fixedly connected with the lower rudder blade, and the upper rudder blade and the lower rudder blade form a duck web structure.
Further: the transmission assembly comprises a driving gear and a driven gear, the driving gear is fixed at the output end of the inner rotor driving motor, the driven gear is fixed on the upper rudder stock, and the driving gear is meshed with the driven gear.
Further: the included angle between the upper guide edge and the upper surface of the duck web structure is more than 90 degrees and less than 145 degrees, and the included angle between the lower guide edge and the lower surface is more than 90 degrees and less than 145 degrees.
The utility model achieves the following effects:
According to the bionic ship rudder with the sectional type duck web-like structure, the rudder is divided into the upper rudder blade and the lower rudder blade, and the rudder angles of the upper rudder blade and the lower rudder blade are adjusted according to the flooding depth of the rudder, so that the absorption and the utilization of the wake flow of the propeller are improved, and the rudder efficiency is improved. The duck web structure rudder can effectively improve the lift force generated by the ship rudder under the same rudder angle, so that the steering performance of the ship rudder is improved. The duck web structure rudder can reduce negative effects caused by cavitation and the like of the ship rudder, and prolong the service life of the ship rudder.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a bionic ship rudder of a sectional type imitative duck web structure;
Fig. 2 is a top view of the duck web structure of the utility model;
fig. 3 is a longitudinal sectional view of the duck web structure of the present utility model.
In the figure:
1-upper rudder stock; 2-rudder blade; 3-an inner rotor driving motor; 4-connecting flanges; 5-lower rudder stock; 6-rudder blade and 7-outer rotor driving motor; 8-a propeller tail support arm; a 9-coupling; 10-a drive gear; 11-a driven gear; 12-upper guide edge; 13-lower guide edge; 14-trailing edge; 15-upper surface; 16-lower surface; 17-bump.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
The terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Examples: referring to fig. 1-3, a bionic ship rudder of a sectional type imitative duck web structure of the present embodiment includes an upper rudder stock 1, a lower rudder stock 5, an upper rudder blade 2, a lower rudder blade 6, an inner rotor driving motor 3, an outer rotor driving motor 7, a connecting flange 4, a coupling 9, a driving gear 10 and a driven gear 11;
the lower rudder post 5 is connected with the upper rudder post 1 through a coupler 9, the upper part of the upper rudder post 1 is rotatably mounted with a propeller tail support arm 8, an inner rotor driving motor 3 is fixedly mounted on the propeller tail support arm 8, a driving gear 10 is fixed at the output end of the inner rotor driving motor 3, a driven gear 11 is fixed on the upper rudder post 1, the driving gear 10 is meshed with the driven gear 11, the upper rudder blade 2 is fixedly connected with the upper rudder post through a connecting flange 4, the outer rotor driving motor 7 is fixedly connected with the lower rudder post 5, a lower rudder blade 6 is sleeved on the lower rudder post 5, the outer shell of the outer rotor driving motor 7 is fixedly connected with the lower rudder blade 6, and the upper rudder blade 2 and the lower rudder blade 6 form a duck web structure; the included angle between the upper guide edge 12 and the upper surface 15 of the duck web structure is more than 90 degrees and less than 145 degrees, and the included angle between the lower guide edge 13 and the lower surface 16 is more than 90 degrees and less than 145 degrees.
As shown in fig. 2, in the present embodiment, the cross section of the duck web structure adopts NACA series of airfoils, the protrusions 17 of the trailing edge are semi-ellipsoidal structures, the trailing edge 14 is arc-shaped structures, and the trailing edge is sinusoidal in the span direction.
As shown in fig. 3, in the present embodiment, the upper and lower surfaces 15 and 16 of the duck web structure are wavy in the longitudinal direction, rather than straight.
In practical application, when the inner rotor driving motor 3 and the outer rotor driving motor 7 do not act, the upper rudder blade 2 and the lower rudder blade 6 are both positioned at the right central positions, and the upper rudder blade 2 and the lower rudder blade 6 are in symmetrical structures. When in steering, the inner rotor driving motor 3 controls the whole duck web structure to rotate, the outer rotor driving motor 7 controls the lower steering blade 6 to rotate, namely if only the inner rotor driving motor 3 rotates, the upper steering blade 2 and the lower steering blade 6 simultaneously and synchronously rotate, and when the outer rotor driving motor 7 rotates, the shell of the outer rotor driving motor 7 drives the lower steering blade 6 to rotate, so that the steering angles between the upper steering blade 2 and the lower steering blade 6 are different. In this way, the rudder angle of the upper rudder blade 2 and the lower rudder blade 6 can be changed according to different flooding depths during rudder turning, so that wake flows of the propeller are effectively absorbed and utilized, and the rudder efficiency is improved.
The duck web structure has good flow characteristics, can effectively control flow separation, and can effectively improve the lift force generated by the ship rudder under the same rudder angle, thereby improving the steering performance of the ship rudder. Meanwhile, under the same operation working condition, the ship bionic rudder with the duck web structure can reduce negative effects caused by cavitation and the like of the ship rudder, and the service life of the ship rudder is prolonged.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting thereof; although the utility model has been described in detail with reference to the above embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present utility model.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. A bionic ship rudder of a sectional type imitative duck web structure is characterized in that: the steering device comprises an upper rudder stock (1), a lower rudder stock (5), an upper rudder blade (2), a lower rudder blade (6), an inner rotor driving motor (3), an outer rotor driving motor (7), a connecting flange (4), a coupler (9) and a transmission assembly;
The lower rudder stock (5) is connected with the upper rudder stock (1) through a coupler (9), the upper part of the upper rudder stock (1) is rotatably mounted with a propeller tail support arm (8), an inner rotor driving motor (3) is fixedly mounted on the propeller tail support arm (8), the output end of the inner rotor driving motor (3) is connected with the upper rudder stock (1) through a transmission assembly, the upper rudder blade (2) is fixedly connected with the upper rudder stock through a connecting flange (4), an outer rotor driving motor (7) is fixedly connected with the lower rudder stock (5), the outer shell of the outer rotor driving motor (7) is fixedly connected with the lower rudder blade (6), and the upper rudder blade (2) and the lower rudder blade (6) form a duck web structure.
2. The segmented simulated duck web structured bionic ship rudder as claimed in claim 1, wherein: the transmission assembly comprises a driving gear (10) and a driven gear (11), the driving gear (10) is fixed at the output end of the inner rotor driving motor (3), the driven gear (11) is fixed on the upper rudder stock (1), and the driving gear (10) is meshed with the driven gear (11).
3. The bionic ship rudder of a segmented type imitating duck web structure as recited in claim 1 or 2, wherein: the included angle between the upper guide edge (12) and the upper surface (15) of the duck web structure is more than 90 degrees and less than 145 degrees, and the included angle between the lower guide edge (13) and the lower surface (16) is more than 90 degrees and less than 145 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322795198.4U CN220809783U (en) | 2023-10-18 | 2023-10-18 | Bionic ship rudder of sectional type imitative duck web structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322795198.4U CN220809783U (en) | 2023-10-18 | 2023-10-18 | Bionic ship rudder of sectional type imitative duck web structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220809783U true CN220809783U (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322795198.4U Active CN220809783U (en) | 2023-10-18 | 2023-10-18 | Bionic ship rudder of sectional type imitative duck web structure |
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| Country | Link |
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| CN (1) | CN220809783U (en) |
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2023
- 2023-10-18 CN CN202322795198.4U patent/CN220809783U/en active Active
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