Anti-winding cutting knife for propeller of steering oar

Abstract

The utility model discloses a steering oar propeller anti-winding cutting knife which comprises a tail shaft bracket, a connecting cylinder is fixedly connected to the center of the front end of the tail shaft bracket, a fastening ring is correspondingly connected to the surface of the outer end of the connecting cylinder in a sleeved mode, a propeller is arranged at the front end of the connecting cylinder, and a tail shaft is fixedly connected to the output end of the propeller. The other end of the tail shaft correspondingly extends into the tail shaft bracket through the interior of the connecting cylinder; according to the anti-winding cutting knife for the propeller of the steering oar, the efficient cleaning assembly is integrated, the safety and efficiency in the ship navigation process are remarkably improved, the spiral design and the three-face edging characteristic of the cutting knife are achieved, and the cutting knife has the advantages of being simple in structure, convenient to use and high in practicability. And thick and large sundries such as a fishing net wound on the propeller can be rapidly and effectively cut, so that the damage to the propeller or the power loss caused by the winding of the sundries is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rudder propeller equipment, in particular to an anti-winding cutter for a rudder propeller. Background Technique

[0002] In the booming development of the marine industry, the offshore waters have become an important area for economic activities. However, this area also faces severe environmental challenges. One of them is a large number of broken fishing nets, seaweeds and other sundries in seawater. These sundries are extremely easy to wind around the rudder propeller of a ship, especially on the propeller. This not only seriously reduces the propulsion efficiency of the propeller, but also may cause damage to its structure, shorten its service life, and even lead to navigation safety accidents.

[0003] In view of this, research and improvement are carried out on the existing structure and deficiencies, and an anti-winding cutter for a rudder propeller is provided, in order to achieve a more practical and valuable purpose. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an anti-winding cutter for a rudder propeller, which solves the above problems.

[0005] To achieve the above object, the utility model provides the following technical solution: an anti-winding cutter for a rudder propeller, including a stern shaft frame, a connecting cylinder is fixedly connected to the center of the front end of the stern shaft frame, a fastening ring is correspondingly sleeved on the outer surface of the connecting cylinder, a propeller is arranged at the front end of the connecting cylinder, and a stern shaft is fixedly connected to the output end of the propeller. The other end of the stern shaft extends into the stern shaft frame through the inside of the connecting cylinder correspondingly. Its characteristics are that it also includes a cleaning component, which is fixedly installed inside the fastening ring and is used for continuously cleaning sundries such as fishing nets on the propeller.

[0006] Preferably, a sealing ring is fixedly installed on the front surface of the connecting cylinder, the outer end of the stern shaft is correspondingly sleeved inside the sealing ring, and four limiting grooves are arranged in a circular arrangement on the outer end of the connecting cylinder.

[0007] Preferably, four threaded holes are arranged around the center of the outer end of the fastening ring, and a through hole is correspondingly opened in the center of the mutual spacing of the four threaded holes. Among them, a plurality of installation grooves are respectively opened around the front end of the surface of the fastening ring, a pin hole is correspondingly opened at the bottom end of the installation groove, and a connecting block is respectively arranged in the center of the installation groove.

[0008] Preferably, a first screw is respectively arranged at the center of the upper end of the connecting block. The lower end of the first screw is inserted into the pin hole at the upper end of the fastening ring through the inside of the connecting block correspondingly. A cutter is fixedly connected to the front surface of the connecting block respectively. The front end of the cutter is arranged at a certain angle with the direction of the propeller. The outer end of the cutter is arranged in a spiral shape and is set as a three-sided cutting edge shape.

[0009] Preferably, an opening is provided at the center of the lower end of the fastening ring. Fixed blocks are respectively fixedly connected to the outer ends of the opening, and threaded holes are respectively provided at the centers of the fixed blocks. Fastening screws are threadedly connected inside the threaded holes.

[0010] Preferably, screw rods two are respectively threadedly connected inside the threaded holes provided at the center of the outer end of the fastening ring. The bottom surfaces of the screw rods two are correspondingly and tightly attached to the inner bottom surface of the limiting groove. And screw rods are respectively sleeved inside the through holes provided at the outer end of the fastening ring. The bottom ends of the screw rods extend to the outer end of the stern shaft through the inside of the connecting cylinder.

[0011] Preferably, the cleaning assembly includes a tapered gear ring one, a tapered gear ring two and a razor. The tapered gear ring one is correspondingly fixedly sleeved on the outer surface of the stern shaft. And tapered gear rings two are respectively fixedly connected to the bottom ends of the screw rods. The lower end of the tapered gear ring two is in meshing connection with the outer end of the tapered gear ring one. Among them, fixed rings are respectively fixedly sleeved on the upper surface of the screw rods. A plurality of razors are arranged in a circumferential arrangement on the outer ends of the fixed rings.

[0012] Compared with the prior art, the present utility model provides a rudder oar propeller anti-entanglement cutter, which has the following beneficial effects:

[0013] Through the integrated and efficient cleaning assembly, the safety and efficiency during the ship navigation are significantly improved. The spiral design and three-sided edge characteristics of the cutter can quickly and effectively cut thick sundries such as fishing nets wound on the propeller, avoiding damage to the propeller or power loss caused by sundries entanglement. At the same time, the continuous rotation of the razor is responsible for removing the fine sundries around the propeller, ensuring the smooth surface of the propeller, reducing water resistance and improving the propulsion efficiency. The combined action of this dual cleaning mechanism effectively prevents navigation accidents caused by propeller entanglement and significantly improves the overall navigation efficiency of the ship.

[0014] Through the fine mechanical structure and ingenious transmission method, the stability and durability of the system are significantly enhanced. The fastening ring is doubly fixed by the limiting groove and the fastening screw, ensuring the stability and non-loosening of the cleaning assembly during high-speed rotation, effectively preventing component damage caused by vibration or impact. In addition, the meshing transmission method of the tapered gear ring one and the tapered gear ring two not only realizes the efficient transmission of power, but also controls the rotation speed and direction of the razor through a reasonable transmission ratio, optimizing the cleaning effect and reducing energy consumption. This stable and durable structural design enables the rudder oar propeller anti-entanglement cutter to operate stably for a long time in a harsh navigation environment, reducing the maintenance cost and extending the service life. Description of the Drawings

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cleaning component structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the cutter structure of the utility model.

[0018] In the figure: 1, stern shaft bracket; 2, connecting cylinder; 3, propeller; 4, fastening ring; 5, stern shaft; 6, limiting groove; 7, fixing block; 8, fastening screw; 9, fixing ring; 10, connecting block; 11, cutter; 12, screw one; 13, screw two; 14, lead screw; 15, taper gear ring one; 16, taper gear ring two; 17, razor. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-3 , a cutter for preventing entanglement of a rudder-propeller and a propeller, including a stern shaft bracket 1, a connecting cylinder 2 is fixedly connected to the center of the front end of the stern shaft bracket 1, a fastening ring 4 is correspondingly sleeved on the outer surface of the connecting cylinder 2, a propeller 3 is arranged at the front end of the connecting cylinder 2, and a stern shaft 5 is fixedly connected to the output end of the propeller 3. The other end of the stern shaft 5 extends into the inside of the stern shaft bracket 1 through the inside of the connecting cylinder 2 correspondingly. It is characterized in that; it further includes a cleaning component, which is fixedly installed inside the fastening ring 4 and is used for continuously cleaning sundries such as fishing nets on the propeller 3.

[0021] Furthermore, a sealing ring is fixedly installed on the front surface of the connecting cylinder 2, and the outer end of the stern shaft 5 is correspondingly sleeved inside the sealing ring, and four limiting grooves 6 are arranged in a circular arrangement on the outer end of the connecting cylinder 2.

[0022] Furthermore, four threaded holes are arranged around the center of the outer end of the fastening ring 4, and a through hole is correspondingly opened at the center of the mutual spacing of the four threaded holes. Among them, a plurality of installation grooves are respectively opened around the front end of the surface of the fastening ring 4, a pin hole is correspondingly opened at the bottom end of the installation groove, and connecting blocks 10 are respectively arranged at the center of the installation groove.

[0023] Further, screw rods 12 are respectively arranged at the centers of the upper ends of the connecting blocks 10. The lower ends of the screw rods 12 are inserted into the pin holes at the upper ends of the fastening rings 4 through the interiors of the connecting blocks 10. Cutter knives 11 are respectively fixedly connected to the front surfaces of the connecting blocks 10. The front ends of the cutter knives 11 are arranged at an angle with respect to the direction of the propeller 3. The outer ends of the cutter knives 11 are arranged in a spiral shape and are shaped with three-sided cutting edges.

[0024] Further, openings are formed at the centers of the lower ends of the fastening rings 4. Fixed blocks 7 are respectively fixedly connected to the outer ends of the openings. Threaded holes are respectively formed at the centers of the fixed blocks 7. Fastening screw rods 8 are threadedly connected to the interiors of the threaded holes.

[0025] Further, screw rods 13 are respectively threadedly connected to the interiors of the threaded holes formed at the centers of the outer ends of the fastening rings 4. The bottom surfaces of the screw rods 13 are correspondingly and closely attached to the inner bottom surfaces of the limiting grooves 6. Lead screws 14 are respectively sleeved in the through holes formed at the outer ends of the fastening rings 4. The bottom ends of the lead screws 14 extend to the outer ends of the stern shafts 5 through the interiors of the connecting cylinders 2.

[0026] Further, the cleaning assembly is composed of a taper gear ring 15, a taper gear ring 16, and a razor 17. The taper gear ring 15 is fixedly sleeved on the outer surface of the stern shaft 5 correspondingly. Taper gear rings 16 are respectively fixedly connected to the bottom ends of the lead screws 14. The lower ends of the taper gear rings 16 are meshed with the outer ends of the taper gear rings 15. Fixed rings 9 are respectively fixedly sleeved on the upper surfaces of the lead screws 14. A plurality of razors 17 are arranged in a circumferential arrangement on the outer ends of the fixed rings 9.

[0027] Working principle: The stern frame 1 serves as the fixed foundation of the system, supporting and connecting other components. The connecting cylinder 2 is installed at the front end of the stern frame 1, with the stern shaft 5 passing through its interior. A sealing ring is provided at the front end to prevent water from seeping in. Four limiting grooves 6 are provided at the outer end of the connecting cylinder 2 for fixing the fastening ring 4. The propeller 3 is fixed at the front end of the stern shaft 5 and is the main component for driving the ship forward. The fastening ring 4 is sleeved on the connecting cylinder 2 and fixed through the limiting grooves 6 and fastening screws 8. A cleaning component is installed inside. The cutting knife 11 is installed in the installation groove of the fastening ring 4 through the connecting block 10 and the first screw 12. Its special design with three-sided cutting edges, spiral shape, and a certain angle with the direction of the propeller enables it to effectively cut the entanglements when the propeller rotates. The first tapered gear ring 15 is fixed on the stern shaft 5 and rotates with the propeller. The second tapered gear ring 16 is fixed at the bottom of the lead screw 14 and meshes with the first tapered gear ring 15 to achieve power transmission. The razor 17 is fixed around the fixing ring 9 at the upper end of the lead screw 14 and rotates with the lead screw to scrape the fine debris around the propeller. When the propeller 3 starts to rotate, the stern shaft 5 rotates accordingly, driving the first tapered gear ring 15 to rotate together. The meshing of the first tapered gear ring 15 and the second tapered gear ring 16 transmits the rotational force to the lead screw 14, causing the lead screw 14 and the razor 17 on it to start rotating. The rotation direction and speed of the razor 17 are controlled by the transmission ratio of the tapered gears to optimize the cleaning effect. At the same time, the cutting knife 11 installed on the fastening ring 4 rotates relative to the propeller at a certain angle with the fastening ring 4. Its spiral design and three-sided cutting edges can cut the thicker debris, such as fishing nets, entangled on the propeller. The fastening ring 4 is firmly fixed on the connecting cylinder 2 through the limiting grooves 6 and fastening screws 8, ensuring the stability and safety of the cleaning component during high-speed rotation. At the same time, the second screw 13 further strengthens the connection between the fastening ring 4 and the connecting cylinder 2 to prevent loosening. With the continuous rotation of the propeller, the cutting knife 11 and the razor 17 keep working, effectively preventing and cleaning the entanglements on the propeller, ensuring the navigation efficiency and safety of the ship.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutter for preventing entanglement of a rudder propeller, comprising a stern shaft frame (1), a connecting cylinder (2) is fixedly connected to the center of the front end of the stern shaft frame (1), a fastening ring (4) is correspondingly sleeved on the outer end surface of the connecting cylinder (2), a propeller (3) is arranged at the front end of the connecting cylinder (2), and a stern shaft (5) is fixedly connected to the output end of the propeller (3). The other end of the stern shaft (5) correspondingly extends into the inside of the stern shaft frame (1) through the inside of the connecting cylinder (2), and the characteristics are as follows; It further includes a cleaning component, which is fixedly installed inside the fastening ring (4) and is used to continuously clean sundries such as fishing nets from the propeller (3).

2. The anti - entanglement cutter for a rudder propeller according to claim 1, wherein: A sealing ring is fixedly installed on the front end surface of the connecting cylinder (2), and the outer end of the stern shaft (5) is correspondingly sleeved inside the sealing ring. Four limiting grooves (6) are arranged in a circular pattern on the outer end of the connecting cylinder (2).

3. The anti - entanglement cutter for a rudder propeller according to claim 1, characterized in that: Four threaded holes are arranged in a circular pattern around the center of the outer end of the fastening ring (4), and through holes are correspondingly opened at the center of the mutual spacing of the four threaded holes. A number of mounting grooves are respectively opened around the front end of the surface of the fastening ring (4). Pin holes are correspondingly opened at the bottom end inside the mounting grooves, and connecting blocks (10) are respectively arranged at the center inside the mounting grooves.

4. The anti - entanglement cutter for a rudder propeller according to claim 3, wherein: A screw rod one (12) is respectively arranged at the center of the upper end of the connecting block (10). The lower end of the screw rod one (12) is inserted into the pin hole at the upper end of the fastening ring (4) through the inside of the connecting block (10). A cutter (11) is respectively fixedly connected to the front end surface of the connecting block (10). The front end of the cutter (11) is arranged at a certain angle with the direction of the propeller (3). The outer end of the cutter (11) is arranged in a spiral shape and is shaped with three-sided cutting edges.

5. The anti - entanglement cutter for a rudder - propeller according to claim 3, characterized in that: An opening is opened at the center of the lower end of the fastening ring (4). Fixed blocks (7) are respectively fixedly connected to the outer ends of the opening. Threaded holes are respectively opened at the centers of the fixed blocks (7), and fastening screws (8) are threadedly connected inside the threaded holes.

6. The anti-winding cutter for a rudder propeller according to claim 4, wherein: Screw rods two (13) are respectively threadedly connected inside the threaded holes opened at the center of the outer end of the fastening ring (4). The bottom end surfaces of the screw rods two (13) are correspondingly and tightly attached to the inner bottom surface of the limiting grooves (6). Lead screws (14) are respectively correspondingly sleeved inside the through holes opened at the outer end of the fastening ring (4). The bottom ends of the lead screws (14) extend to the outer end of the stern shaft (5) through the inside of the connecting cylinder (2).

7. A cutter for preventing entanglement of a rudder propeller according to claim 1, characterized in that: The cleaning component includes a taper gear ring one (15), a taper gear ring two (16) and a razor (17). The taper gear ring one (15) is correspondingly fixedly sleeved on the outer end surface of the stern shaft (5). The taper gear ring two (16) is respectively fixedly connected to the bottom end of the lead screw (14). The lower end of the taper gear ring two (16) is meshed with the outer end of the taper gear ring one (15). Fixed rings (9) are respectively fixedly sleeved on the upper end surfaces of the lead screws (14). A number of razors (17) are arranged in a circular pattern on the outer ends of the fixed rings (9).

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