Adjusting device and method for front wake flow field of rear propeller
By using a motor-driven rear propeller-forward flow field adjustment device, the angles of the guide vanes and guide plates are dynamically adjusted using active gears and angle adjustment components. This solves the problem of low efficiency of existing devices at different speeds and improves the operating efficiency and safety of the propeller.
Patent Information
- Application Number
- CN202510901441.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-07-15
- Filing Date
- 2025-07-01
- Publication Date
- 2025-10-24
AI Technical Summary
Existing wake field adjustment devices cannot adapt to the ship's speed, resulting in increased impact on the propeller at high speeds and affecting operational efficiency.
A flow field adjustment device for the rear propeller and the front flow field was designed. The device uses a motor to drive the active gear to change the tilt angle of the mounting rod and the guide vane. Combined with the angle adjustment component, the longitudinal angle of the guide vane is adjusted to achieve dynamic guidance and pre-swirling control of the water flow.
It improves propeller operating efficiency, reduces propeller nose drag, enhances thrust, adapts to changes in different sailing speeds, eliminates the need for manual underwater operation, and ensures high safety.
Smart Images
Figure CN120828931A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of ship wake flow regulation, in particular to a rear propeller wake flow field regulation device and a regulation method thereof. BACKGROUND
[0002] The wake flow field refers to a water flow formed around a ship when the ship is running in water, which is affected by the movement of the ship body. The size of the wake flow is related to the ship navigation speed, ship type, roughness of the ship body surface, Reynolds number and other factors. The wake flow at the propeller flow field of the ship will hinder the operation of the propeller, thereby affecting the operation efficiency of the propeller. In order to solve this problem, a wake flow field regulation device is usually used to stably regulate the regional wake flow. However, the existing wake flow field regulation device has the following problems when in use: The existing wake flow field regulation device is mostly in the form of a guide pipe cooperating with a guide plate to guide and pre-rotate the wake flow, so as to ensure the stable operation of the propeller. However, the existing wake flow field regulation device is not convenient to adaptively adjust according to the navigation speed. With the faster navigation, the influence of the wake flow on the propeller is greater. At this time, the original distribution mode is still adopted, which undoubtedly weakens the guiding and pre-rotating effect of the wake flow, and thus cannot achieve better regulation effect and still affects the operation efficiency of the propeller.
[0003] In view of the above problems, it is urgent to make innovative design on the basis of the original wake flow field regulation device. SUMMARY
[0004] The present application aims to provide a rear propeller wake flow field regulation device and a regulation method thereof, so as to solve the problem that the existing wake flow field regulation device is not convenient to adaptively adjust according to the navigation speed. The technical scheme of the present application provides a solution significantly different from the prior art, which solves the problem that the prior art solution is too single.
[0005] In order to achieve the above object, the present application provides the following technical scheme: a rear paddle pre-companion flow field adjusting device and an adjusting method thereof, comprising a mounting shaft, upper and lower positions of the mounting shaft are sleeved with an upper clamp and a lower clamp, and the top right side of the upper clamp is connected with an arc-shaped guide pipe through a fixed rod; further comprising a driving gear, the driving gear is embeddedly installed at the top right side of the upper clamp, and the driving gear is driven by a motor, the inner side of the driving gear is provided with a half-tooth ring in meshing mode, and the half-tooth ring is embeddedly arranged in the inside of the upper clamp, a bevel gear is meshed on the half-tooth ring, an installation rod is connected to the bevel gear, and a guide vane is sleeved on the installation rod, positioning columns are fixed on the two sides of the installation rod, the positioning columns are located in positioning grooves, and the positioning grooves are opened on the side wall of the bottom cavity of the guide vane, an installation groove is opened at the top of the arc-shaped guide pipe, and a guide plate is rotatably installed in the installation groove, a mounting sleeve is limitingly and slidingly installed on the side wall of the middle cavity of the guide plate, the mounting sleeve is sleeved on the guide vane, the arc-shaped guide pipe is installed through the guide vane, the diameter of the rear end of the arc-shaped guide pipe is smaller than that of the front end, three guide vanes are distributed in the left half area of the arc-shaped guide pipe in the initial state, and the guide vanes are arranged in an inclined mode. An angle adjusting assembly is arranged between the outside of the mounting sleeve and the inside of the guide plate, and the angle adjusting assembly is used for adjusting the angle of the guide plate.
[0006] Preferably, the angle adjusting assembly comprises a positioning rod, the positioning rod is fixed on the outside of the mounting sleeve, a rack is fixed on the outer end of the positioning rod, the rack is slidingly arranged in the cavity of the side wall of the movable groove, positioning strips are fixed on the upper and lower ends of the rack, the positioning strips are limitingly and slidingly arranged in the cavity of the side wall of the movable groove, a toothed roller is meshed with the rack, the toothed roller is embeddedly and rotatably installed in the guide plate, and the toothed roller is connected with the rotating shaft on the guide plate through a bevel gear set.
[0007] Preferably, the rack and the positioning strips are designed in an arc-shaped structure, and the rack rotates concentrically with the mounting sleeve.
[0008] Preferably, the toothed roller drives the guide plate to rotate longitudinally through the bevel gear set.
[0009] Preferably, a rubber pad is laid on the outside of the guide plate and attached to the inner wall of the installation groove.
[0010] Preferably, the positioning columns slide in the positioning grooves, the positioning grooves are designed in an arc-shaped structure, and the positioning grooves rotate concentrically with the guide plate.
[0011] Preferably, the front and rear ends of the mounting sleeve are designed in an arc-shaped structure and slide in the movable groove, and the width of the movable groove is greater than the width of the mounting sleeve.
[0012] Preferably, the method comprises the following steps: S1: The upper and lower clamps are fastened onto the mounting shaft in front of the ship's propeller. Then, according to the sailing speed, the driving gear is driven by the motor to rotate, and the mounting rod is driven to rotate through the half gear ring and bevel gear. S2: The installation rod drives the deflector to deflect, adjust its tilt angle, and thus adjust its diversion effect; S3: The lateral deflection of the guide plate drives the longitudinal rotation of the guide plate through the angle adjustment component to adjust its longitudinal inclination angle to adjust the guiding speed of the water flow; S4: When the ship is moving, the water flow in the top left area is guided and accelerated through the curved duct and guide plate, and the water flow is pre-swirled through the guide vane to reduce the propeller torque.
[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing an arc-shaped duct with a front diameter smaller than the rear diameter, the water flow passing through can be accelerated, thereby generating additional thrust, thereby making the wake above the propeller more uniform and powerful. Furthermore, by providing an inclined guide vane, a pre-swirl flow can be formed above the propeller, reducing the propeller front resistance and increasing some thrust, effectively improving the propeller thrust and thus improving its operating efficiency. In the present invention, when applied to different sailing speeds of ships, the driving gear is driven to rotate by a motor, and the guide vane can be driven to rotate horizontally by the installation rod and the positioning column to change its inclination angle, and then change its pre-swirl degree. Furthermore, the lateral rotation of the guide vane can drive the guide plate to rotate longitudinally through the angle adjustment component to adjust its longitudinal inclination angle, so that the offset direction and offset angle of the guide vane correspond to the offset direction and offset angle of the guide plate, and then the guidance and diversion effect of the water flow can be adjusted according to the sailing speed of the ship. This process only requires the driving gear to be driven by the motor, and no complicated operation is required. At the same time, there is no need for manual underwater adjustment, which has high safety and can be adjusted in real time according to the sailing speed, further improving the operating efficiency of the propeller. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 This is a schematic diagram of the side structure of the mounting rod of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the guide plate of the present invention from top view; Figure 5 For the present invention Figure 4 The enlarged structural diagram at C in the middle; Figure 6 For the present inventionFigure 1 Amplification structure schematic diagram at B; Figure 7 Structure schematic diagram of angle adjustment assembly of the application.
[0015] In the figure: 1, mounting shaft; 2, lower hoop; 3, upper hoop; 4, fixed rod; 5, arc-shaped guide pipe; 6, driving gear; 7, half-tooth ring; 8, bevel gear; 9, mounting rod; 10, guide vane; 11, positioning column; 12, positioning groove; 13, mounting groove; 14, guide plate; 15, movable groove; 16, mounting sleeve; 17, angle adjustment assembly; 171, positioning rod; 172, rack; 173, positioning strip; 174, toothed roller; 175, bevel gear set. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.
[0017] Please refer to Figures 1-7 The application provides a technical solution: a rear propeller propeller front wake field adjusting device and an adjusting method thereof, which comprises a mounting shaft 1, a lower hoop 2, an upper hoop 3, a fixed rod 4, an arc-shaped guide pipe 5, a driving gear 6, a half-tooth ring 7, a bevel gear 8, a mounting rod 9, a guide vane 10, a positioning column 11, a positioning groove 12, a mounting groove 13, a guide plate 14, a movable groove 15, a mounting sleeve 16, an angle adjustment assembly 17, a positioning rod 171, a rack 172, a positioning strip 173, a toothed roller 174 and a bevel gear set 175.
[0018] Embodiment one: please refer to Figures 1-7 As shown, the upper and lower positions of the mounting shaft 1 are sleeved with the upper hoop 3 and the lower hoop 2, and the top right side of the upper hoop 3 is connected with the arc-shaped guide pipe 5 through the fixed rod 4; the half-tooth ring 7 is engaged with the bevel gear 8, the bevel gear 8 is connected with the mounting rod 9, and the mounting rod 9 is sleeved with the guide vane 10; the top of the arc-shaped guide pipe 5 is provided with the mounting groove 13, the guide plate 14 is rotatably installed in the mounting groove 13, the side wall of the middle cavity of the guide plate 14 is limitingly and slidably installed with the mounting sleeve 16, and the mounting sleeve 16 is sleeved on the guide vane 10; The arc-shaped guide pipe 5 is installed through the guide vane 10, and the diameter of the rear end of the arc-shaped guide pipe 5 is smaller than that of the front end; the guide vane 10 is distributed with three guide vanes in the left half area of the arc-shaped guide pipe 5, and the guide vane 10 is initially arranged in an inclined manner; The arc-shaped guide pipe 5 guides and accelerates the water flow, the guide vane 10 makes the water flow generate a pre-swirl, and the operating efficiency of the propeller is improved.
[0019] Wherein, the arc-shaped conduit 5 can accelerate the passing water flow, so that it generates additional thrust, and then makes the wake above the propeller more uniform and powerful; in addition, by setting the inclined guide vane 10, a pre-rotation flow can be formed above the propeller, reducing the propeller pre-drag and increasing part of the thrust, effectively improving the thrust of the propeller, and then improving its operating efficiency.
[0020] Example two: on the basis of example one, please refer to Figures 1-7 As shown, the driving gear 6 is embeddedly installed at the top right side of the upper hoop 3, and the driving gear 6 is driven by the motor, the inner side of the driving gear 6 is engaged with the half-tooth ring 7, and the half-tooth ring 7 is embeddedly arranged inside the upper hoop 3, the half-tooth ring 7 is engaged with the bevel gear 8, and the bevel gear 8 is connected with the mounting rod 9, and the mounting rod 9 is sleeved with the guide vane 10, the two sides of the mounting rod 9 are fixed with the positioning column 11, and the positioning column 11 is located in the positioning groove 12, and the positioning groove 12 is opened on the side wall of the bottom cavity of the guide vane 10, the angle adjusting assembly 17 is arranged between the outside of the mounting sleeve 16 and the inside of the guide plate 14, and the angle adjusting assembly 17 is used for adjusting the angle of the guide plate 14; The positioning column 11 slides in the positioning groove 12, and the positioning groove 12 is designed as an arc structure, and the positioning groove 12 rotates around the same center with the guide plate 14; the front and rear ends of the mounting sleeve 16 are designed as arc structures and slide in the movable groove 15, and the width of the movable groove 15 is greater than the width of the mounting sleeve 16; the angle adjusting assembly 17 includes a positioning rod 171, the positioning rod 171 is fixed on the outside of the mounting sleeve 16, and the outer end of the positioning rod 171 is fixed with a rack 172, and the rack 172 is slidably arranged in the cavity of the side wall of the movable groove 15, the upper and lower ends of the rack 172 are fixed with positioning strips 173, and the positioning strips 173 slide in the cavity of the side wall of the movable groove 15, the outer end of the rack 172 is engaged with a toothed roller 174, and the toothed roller 174 is embeddedly rotatably installed in the guide plate 14, and the toothed roller 174 is connected with the rotating shaft on the guide plate 14 through a bevel gear set 175; the rack 172 and the positioning strip 173 are designed as arc structures, and the rack 172 rotates around the same center with the mounting sleeve 16; the toothed roller 174 drives the guide plate 14 to rotate longitudinally through the bevel gear set 175, and the outside of the guide plate 14 is paved with rubber pads and the inner wall of the mounting groove 13; At different sailing speeds, the driving gear 6 is driven to rotate by the motor, which can drive the guide vane 10 to move horizontally, and drive the guide plate 14 to rotate longitudinally, so as to adjust the guiding and guiding effect, and further improve the operating efficiency of the propeller.
[0021] Wherein, when applied to different navigation speed of the ship, by driving the motor drive gear 6 rotation, can be through the installation rod 9 with positioning column 11 driven by the guide vane 10 transverse rotation, change its inclination angle, and then change its pre-rotation flow degree; In addition, the transverse rotation of the guide vane 10, can be driven by the angle adjustment assembly 17 guide plate 14 longitudinal rotation, adjust its longitudinal inclination angle, so that the offset direction and offset angle of the guide vane 10 and the offset direction and offset angle of the guide plate 14 corresponding, and then can be according to the ship navigation speed, adjust the guide and guide effect of water flow, this process only need to drive the motor drive gear 6, without complex operation, also without manual into the underwater adjustment, high safety, according to the navigation speed in real time adjustment, further improve the operating efficiency of the propeller.
[0022] Example three: on the basis of example two, please refer to Figures 1-7 As shown in the figure, the method comprises the following steps: S1: the upper and lower hoop 3 and 2 fastening set in the ship propeller before the installation shaft 1, and then according to the navigation speed, by driving the motor drive gear 6 rotation, through the half tooth ring 7 and bevel gear 8 drive installation rod 9 rotation; S2: the installation rod 9 driven by the guide vane 10 deflection, adjust its inclination angle, and then adjust its guide effect; S3: the transverse deflection of the guide vane 10, through the angle adjustment assembly 17 guide plate 14 longitudinal rotation, adjust its longitudinal inclination angle, to adjust the guide speed of water flow; S4: when the ship is running, through the arc-shaped guide pipe 5 and guide plate 14 on the top left area water flow guide and acceleration, and through the guide vane 10 on the water flow pre-rotation, reduce the propeller torsion.
[0023] Working principle: in the use of the rear propeller before the wake field adjusting device and its adjusting method, such as Figures 1-7As shown, first, the upper and lower clamps 3 and 2 are fastened to the ship propeller mounting shaft 1, and then according to the ship speed, the motor drives the driving gear 6 to rotate, the driving gear 6 drives the plurality of bevel gears 8 to rotate through the half-tooth ring 7, under the restriction of the positioning column 11 and the positioning groove 12, the bevel gears 8 drive the guide vane 10 to rotate transversely through the mounting rod 9, so as to change the inclination angle of the guide vane 10, at the same time, the guide vane 10 drives the mounting sleeve 16 to rotate transversely in the active groove 15, the mounting sleeve 16 drives the rack 172 to rotate through the positioning rod 171, the rack 172 is engaged with the toothed roller 174, under the action of the transmission force, the guide plate 14 can be driven to rotate longitudinally in the mounting groove 13 through the bevel gear set 175, so as to adjust the longitudinal inclination angle of the guide plate 14, change the water flow guiding speed, in this process, the guide plate 14 drives the guide vane 10 to move longitudinally, so that the positioning column 11 slides in the positioning groove 12, and the stability of the guide vane 10 is maintained; Then when the ship is sailing, the guide plate 14 cooperates with the arc-shaped guide pipe 5 to guide and accelerate the water, the inclined guide vane 10 makes the water produce a pre-swirl, and the two cooperate to provide thrust for the propeller, and reduce the influence of the wake, thereby effectively improving the operating efficiency of the propeller.
[0024] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A rear paddle propeller pre-flow field adjusting device, comprising a mounting shaft (1), an upper and lower position of the mounting shaft (1) is sleeved with an upper and lower hoop (3) and (2), and the top right side of the upper hoop (3) is connected with an arc-shaped guide pipe (5) through a fixed rod (4); characterized in that It also includes a driving gear (6), which is embeddedly installed on the top right side of the upper hoop (3), and the driving gear (6) is driven by a motor, the inner side of the driving gear (6) is engaged with a half-tooth ring (7), and the half-tooth ring (7) is embeddedly arranged inside the upper hoop (3), the half-tooth ring (7) is engaged with a bevel gear (8), the bevel gear (8) is connected with a mounting rod (9), and the mounting rod (9) is sleeved with a guide vane (10), the both sides of the mounting rod (9) are fixed with positioning columns (11), the positioning columns (11) are located in positioning grooves (12), and the positioning grooves (12) are opened on the side wall of the bottom cavity of the guide vane (10), the top of the arc-shaped guide pipe (5) is provided with a mounting groove (13), and the guide plate (14) is rotatably installed in the mounting groove (13), the side wall of the middle cavity of the guide plate (14) is limitingly and slidingly installed with a mounting sleeve (16), and the mounting sleeve (16) is sleeved on the guide vane (10), the arc-shaped guide pipe (5) is installed through the guide vane (10), and the diameter of the rear end of the arc-shaped guide pipe (5) is smaller than that of the front end, the guide vane (10) is distributed with three in the left half area of the arc-shaped guide pipe (5), and the guide vane (10) is obliquely arranged in the initial state; An angle adjusting assembly (17) is arranged between the outside of the mounting sleeve (16) and the inside of the guide plate (14), and the angle adjusting assembly (17) is used for adjusting the angle of the guide plate (14).
2. A post-propeller slipstream field conditioning device in accordance with claim 1, characterised in that: The angle adjusting assembly (17) comprises a positioning rod (171), the positioning rod (171) is fixed on the outside of the mounting sleeve (16), the outer end of the positioning rod (171) is fixed with a rack (172), and the rack (172) is slidingly arranged in the side wall cavity of the movable groove (15), the both ends of the rack (172) are fixed with positioning strips (173), the positioning strips (173) are limitingly and slidingly arranged in the side wall cavity of the movable groove (15), the outer end of the rack (172) is engaged with a toothed roller (174), and the toothed roller (174) is embeddedly and rotatably installed in the guide plate (14), and the toothed roller (174) is connected with the rotating shaft on the guide plate (14) through a bevel gear set (175).
3. A post-propeller slipstream field conditioning device according to claim 2, characterised in that: The rack (172) and the positioning strip (173) are designed as arc-shaped structures, and the rack (172) rotates concentrically with the mounting sleeve (16).
4. A post-propeller slipstream field conditioning device in accordance with claim 3, wherein: The toothed roller (174) drives the guide plate (14) to rotate longitudinally through the bevel gear set (175).
5. A post-propeller slipstream field conditioning device according to claim 4, characterised in that: The outside of the guide plate (14) is paved with rubber pads and the inner wall of the mounting groove (13).
6. A post-propeller slipstream field conditioning device according to claim 5, characterised in that: The positioning column (11) is slidingly attached in the positioning groove (12), the positioning groove (12) is designed as an arc-shaped structure, and the positioning groove (12) rotates concentrically with the guide plate (14).
7. A post-propeller slipstream field conditioning device in accordance with claim 2, wherein: The front and rear ends of the mounting sleeve (16) are designed as arc-shaped structures to fit and slide in the movable groove (15), and the width of the movable groove (15) is greater than the width of the mounting sleeve (16).
8. A method for adjusting the pre-propeller wake field of a propeller, applied to the device for adjusting the pre-propeller wake field of a propeller according to any one of claims 1-7, characterized in that: The method comprises the following steps: S1: fasten the upper and lower hoops (3, 2) on the ship propeller front mounting shaft (1), then rotate the driving gear (6) by the motor according to the sailing speed, and drive the mounting rod (9) to rotate through the half-tooth ring (7) and bevel gear (8); S2: the mounting rod (9) drives the deflector (10) to deflect, adjust the inclination angle, and further adjust the flow guiding effect; S3: the transverse deflection of the deflector (10) drives the flow guide plate (14) to rotate longitudinally through the angle adjustment assembly (17), adjusts the longitudinal inclination angle, and adjusts the guiding speed of the water flow; S4: when the ship is running, the arc-shaped guide pipe (5) and the flow guide plate (14) guide and accelerate the water flow in the top left area, and the deflector (10) pre-rotates the water flow to reduce the propeller torque.