A retractable vortex-damping fin support for ships

Abstract

This utility model relates to the field of ship vortex-suppressing fin technology and discloses a retractable ship vortex-suppressing fin folding bracket, which solves the problem that currently fixed vortex-suppressing fins are prone to collision with obstacles and damage. It includes a mounting shaft and a hull. One end of the mounting shaft is located inside the hull, and the other end passes through the hull and is fixedly connected to a propeller. A vortex-suppressing fin body is provided on the outside of the propeller. An adjustment mechanism is provided between the vortex-suppressing fin body and the propeller. The adjustment mechanism includes a side frame fixed to the propeller, an inner shaft rotatably connected to the inner side of the side frame, and a mounting seat fixedly sleeved on the outer side of the inner shaft. The vortex-suppressing fin body is fixed to the outer side of the mounting seat. This utility model, through the cooperation between the movable rod and the mounting seat, as well as the inner shaft and the side frame, facilitates the folding of the vortex-suppressing fin body, thereby allowing for easy retraction and extension as needed to prevent collisions with obstacles and damage.

Description

Technical Field

[0001] This utility model belongs to the field of ship anti-vortex fin technology, specifically a retractable ship anti-vortex fin folding bracket. Background Technology

[0002] Ship vortex suppressors are energy-saving and efficiency-enhancing devices installed near the ship's propeller. By recovering the rotational energy of the propeller wake, they eliminate or weaken hub vortices, converting the energy originally lost in the vortex into effective thrust. At the same time, they reduce propeller rotational drag, noise, and vibration, thereby improving ship propulsion efficiency and reducing fuel consumption. They are mostly composed of blades of a specific shape, with the number of blades often matching the number of propeller blades. Through scientifically designed angles and curvatures, they achieve the effect of rectifying the propeller wake.

[0003] Currently, most ship anti-vortex fins adopt a fixed structure. However, when ships enter or exit narrow waterways, undergo dock maintenance, or encounter severe sea conditions, the fixed anti-vortex fins are prone to collisions with obstacles such as dock facilities and underwater reefs, which can cause the anti-vortex fins to deform or even break. This can not only damage the equipment but also cause malfunctions in the ship's propulsion system, threatening navigation safety. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a retractable folding bracket for ship anti-vortex fins, which effectively solves the problem that currently fixed anti-vortex fins are prone to collision with obstacles and damage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a retractable ship vortex-suppressing fin folding bracket, comprising a mounting shaft and a hull, one end of the mounting shaft being located inside the hull, the other end of the mounting shaft passing through the hull and fixedly connected to a propeller, a vortex-suppressing fin body being provided on the outside of the propeller, and an adjustment mechanism being provided between the vortex-suppressing fin body and the propeller.

[0006] The adjustment mechanism includes a side frame fixed to the propeller body, an inner shaft rotatably connected to the inner side of the side frame, a mounting base fixedly sleeved on the outer side of the inner shaft, and the main body of the anti-vortex fin fixed to the outer side of the mounting base.

[0007] Preferably, a translation plate is provided on the outer side of the mounting shaft, the translation plate is arranged parallel to the mounting shaft, and a movable rod is rotatably connected to the outer side of the translation plate, with the end of the movable rod away from the translation plate rotatably connected to the mounting base.

[0008] Preferably, an outer cylinder is provided on the outside of the mounting shaft, a side rod is fixedly connected to the outside of the outer cylinder, a hydraulic cylinder is provided inside the hull, the end of the side rod away from the outer cylinder is fixed to the output end of the hydraulic cylinder, two inner rings are symmetrically fixedly sleeved on the inner side of the outer cylinder, a movable ring is provided between the two inner rings, and a translation plate is fixed to the outside of the movable ring.

[0009] Preferably, multiple limiting rollers are rotatably connected between the two inner rings at equal angles, each limiting roller abutting against the outer wall of the movable ring. Multiple limiting rods are fixedly connected at equal angles on the side of the two inner rings that are close to each other, and one end of each limiting rod is provided with a limiting ball that abuts against the movable ring.

[0010] Preferably, two guide rods are symmetrically fixedly connected to the outer side of the hull, and the outer cylinder is movably sleeved on the outer side of the two guide rods.

[0011] Preferably, a limiting block is fixedly connected to the end of the guide rod away from the hull, the outer cylinder abuts against the limiting block, and a limiting ring is fixedly sleeved on the outer side of the guide rod, with the limiting ring located on the side of the outer cylinder away from the limiting block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The movement of the translation plate is facilitated by the cooperation between the hydraulic cylinder, side rod, outer cylinder, guide rod, inner ring, limit roller, limit ball, limit rod and movable ring. The folding of the anti-vortex fin body is facilitated by the cooperation between the movable rod and the mounting seat, as well as the inner shaft and the side frame. This allows the anti-vortex fin body to be retracted and extended as needed to avoid collision with obstacles and damage.

[0014] 2. By cooperating with the limiting block and the limiting ring, the distance the outer cylinder moves can be controlled, and in turn, the rotation angle of the mounting base can be controlled, thus facilitating the rapid deployment and retraction of the anti-vortex fin body. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the retractable ship vortex-eliminating folding bracket structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the adjustment mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the mounting base structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the inner ring structure of this utility model.

[0021] In the diagram: 1. Mounting shaft; 2. Adjustment mechanism; 201. Side frame; 202. Mounting seat; 203. Translation plate; 204. Inner ring; 205. Outer cylinder; 206. Guide rod; 207. Hydraulic cylinder; 208. Side rod; 209. Limiting ring; 2010. Limiting block; 2011. Inner shaft; 2012. Movable rod; 2013. Movable ring; 2014. Limiting roller; 2015. Limiting ball; 2016. Limiting rod; 3. Hull; 4. Oar body; 5. Anti-vortex fin body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example 1, by Figure 1 The present invention relates to a retractable ship vortex-suppressing folding bracket, comprising a mounting shaft 1 and a hull 3. One end of the mounting shaft 1 is located inside the hull 3, and the other end of the mounting shaft 1 passes through the hull 3 and is fixedly connected to a propeller 4. A vortex-suppressing fin body 5 is provided on the outside of the propeller 4, and an adjustment mechanism 2 is provided between the vortex-suppressing fin body 5 and the propeller 4.

[0024] Specifically, by Figure 2-4The adjustment mechanism 2 includes a side frame 201 fixed to the propeller body 4. An inner shaft 2011 is rotatably connected to the inner side of the side frame 201. A mounting base 202 is fixedly sleeved on the outer side of the inner shaft 2011. The anti-vortex fin body 5 is fixed to the outer side of the mounting base 202. A translation plate 203 is provided on the outer side of the mounting shaft 1. The translation plate 203 is parallel to the mounting shaft 1. A movable rod 2012 is rotatably connected to the outer side of the translation plate 203. The end of the movable rod 2012 away from the translation plate 203 is rotatably connected to the mounting base 202. An outer cylinder 205 is provided on the outer side of the mounting shaft 1. A side rod 208 is fixedly connected to the outer side of the outer cylinder 205. A hydraulic cylinder 207 is provided inside the hull 3. The end of the side rod 208 away from the outer cylinder 205 is fixed to the output end of the hydraulic cylinder 207. Two inner rings 201 are symmetrically fixedly sleeved on the inner side of the outer cylinder 205. 4. A movable ring 2013 is provided between the two inner rings 204. A translation plate 203 is fixed to the outside of the movable ring 2013. Multiple limiting rollers 2014 are rotatably connected between the two inner rings 204 at equal angles. Each limiting roller 2014 abuts against the outer wall of the movable ring 2013. Multiple limiting rods 2016 are fixedly connected at equal angles on the side of the two inner rings 204 that are close to each other. One end of each limiting rod 2016 is provided with a limiting ball 2015 that abuts against the movable ring 2013. By setting the limiting ball 2015, the limiting rod 2016 and the limiting roller 2014, the movable ring 2013 is limited to prevent the movable ring 2013 from moving relative to the outer cylinder 205. At the same time, the outer cylinder 205 and the inner ring 204 are prevented from directly contacting the movable ring 2013, thereby reducing the friction force on the movable ring 2013 when it rotates.

[0025] In operation, the hydraulic cylinder 207 is first activated, which drives the outer cylinder 205 to slide along the two guide rods 206 via the side rod 208. Then, the two inner rings 204 drive the movable ring 2013 to move, which in turn drives the translation plate 203 to move. The movable rod 2012 drives the mounting base 202 and the inner shaft 2011 to rotate. At the same time, the anti-vortex fin body 5 rotates and folds. Finally, the anti-vortex fin body 5 is retracted or extended as needed to prevent it from colliding with obstacles and causing damage.

[0026] Specifically, by Figure 2 As shown, two guide rods 206 are symmetrically fixedly connected to the outer side of the hull 3. The outer cylinder 205 is movably sleeved on the outer side of the two guide rods 206. A limit block 2010 is fixedly connected to the end of the guide rod 206 away from the hull 3. The outer cylinder 205 abuts against the limit block 2010. A limit ring 209 is fixedly sleeved on the outer side of the guide rod 206. The limit ring 209 is located on the side of the outer cylinder 205 away from the limit block 2010.

[0027] In the initial state, the outer cylinder 205 abuts against the two limiting blocks 2010. At this time, the anti-vortex fin body 5 and the propeller body 4 are parallel to each other, and the anti-vortex fin body 5 can be used normally. When the outer cylinder 205 slides along the two guide rods 206 until it abuts against the two limiting rings 209, the anti-vortex fin body 5 and the propeller body 4 are perpendicular to each other, and the anti-vortex fin body 5 can be folded and stored. Thus, the folding angle of the anti-vortex fin body 5 can be controlled by controlling the distance the outer cylinder 205 moves.

Claims

1. A folding support for a retractable ship's anti-vortex fin, comprising a mounting shaft (1) and a hull (3), characterized in that: One end of the mounting shaft (1) is located inside the hull (3), and the other end of the mounting shaft (1) passes through the hull (3) and is fixedly connected to the propeller (4). The outer side of the propeller (4) is provided with a vortex-suppressing fin body (5), and an adjustment mechanism (2) is provided between the vortex-suppressing fin body (5) and the propeller (4). The adjustment mechanism (2) includes a side frame (201) fixed on the propeller body (4), an inner shaft (2011) rotatably connected to the inner side of the side frame (201), a mounting base (202) fixedly sleeved on the outer side of the inner shaft (2011), and the anti-vortex fin body (5) fixed to the outer side of the mounting base (202).

2. A folding support for a retractable ship's anti-vortex fin according to claim 1, characterized in that: A translation plate (203) is provided on the outer side of the mounting shaft (1). The translation plate (203) and the mounting shaft (1) are arranged parallel to each other. A movable rod (2012) is rotatably connected to the outer side of the translation plate (203). The end of the movable rod (2012) away from the translation plate (203) is rotatably connected to the mounting base (202).

3. A folding support for a retractable ship's anti-vortex fin according to claim 1, characterized in that: An outer cylinder (205) is provided on the outside of the mounting shaft (1). A side rod (208) is fixedly connected to the outside of the outer cylinder (205). A hydraulic cylinder (207) is provided inside the hull (3). One end of the side rod (208) away from the outer cylinder (205) is fixed to the output end of the hydraulic cylinder (207). Two inner rings (204) are symmetrically fixedly sleeved on the inner side of the outer cylinder (205). A movable ring (2013) is provided between the two inner rings (204). A translation plate (203) is fixed to the outside of the movable ring (2013).

4. A folding support for a retractable ship's anti-vortex fin according to claim 3, characterised in that: Multiple limiting rollers (2014) are rotatably connected between the two inner rings (204) at equal angles. Each limiting roller (2014) abuts against the outer wall of the movable ring (2013). Multiple limiting rods (2016) are fixedly connected at equal angles on the side of the two inner rings (204) that are close to each other. Each limiting rod (2016) has a limiting ball (2015) at one end that abuts against the movable ring (2013).

5. A collapsible ship's anti-vortex fin folding support according to claim 1, characterized in that: Two guide rods (206) are symmetrically fixedly connected to the outer side of the hull (3), and the outer cylinder (205) is movably sleeved on the outer side of the two guide rods (206).

6. A collapsible ship's anti-vortex fin folding support according to claim 5, characterised in that: The guide rod (206) is fixedly connected to a limiting block (2010) at one end away from the hull (3). The outer cylinder (205) abuts against the limiting block (2010). A limiting ring (209) is fixedly sleeved on the outer side of the guide rod (206). The limiting ring (209) is located on the side of the outer cylinder (205) away from the limiting block (2010).

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