Propeller combined structure for ship

Abstract

The utility model discloses a marine propeller combination structure which comprises a propeller and a protective cover structure, a ship power spindle is connected to the propeller, two rotating shafts are mounted on the protective cover structure, and the rotating shafts are symmetrically distributed on the two sides with the center line of the protective cover structure as the center. A round opening is formed in the protective cover structure, a bearing is installed in the round opening, and the propeller is installed in the bearing. The ship power main shaft drives the propeller to rotate in the protection cover structure through the bearing, power is provided for advancing of the ship, the protection cover structure protects the propeller and prevents the propeller from touching a reef, and the propeller drives the first scraper to rotate around the front half part of the protection cover structure when rotating; meanwhile, the propeller drives the second scraper to rotate around the rear half part of the protective cover structure through the cross rod, and the situation that the ship is immersed in water for a long time and parasites parasitize outside the protective cover structure to increase the weight is avoided.

Description

Technical Field

[0001] This patent relates to the technical field of propellers, and specifically to a combined structure of a marine propeller. Background Art

[0002] Generally, ship navigation is achieved by using an engine to drive a propeller to disturb the water flow to generate thrust. Therefore, the propeller is an important device for a ship. If it is damaged, the ship will lose its mobility. However, in order to prevent the propeller from being damaged, a protective cover structure is often installed outside the propeller for combined use. However, for the current protective cover structure for the combined use outside the propeller, due to its slow movement, a large number of parasites (barnacles) will attach to the surface, increasing the weight and slowing down the ship's forward ability. Utility Model Content

[0003] The purpose of this patent is to provide a combined structure of a marine propeller.

[0004] To achieve the above purpose, this patent provides the following technical solution: A combined structure of a marine propeller includes a propeller and a protective cover structure. A marine power main shaft is connected to the propeller, and a rotating shaft is installed on the protective cover structure. The number of the rotating shafts is two, and the rotating shafts are symmetrically distributed on both sides with the midline of the protective cover structure as the center. A circular opening is provided on the protective cover structure, and a bearing is installed in the circular opening. The propeller is installed in the bearing. A first scraper is installed on the propeller, and the first scraper is located outside the first half of the protective cover structure. A cross bar is installed on the propeller, and a second scraper is installed on the cross bar, and the second scraper is located outside the second half of the protective cover structure.

[0005] Preferably, a positioning shaft is installed on the propeller, a positioning groove is provided on the marine power main shaft, and the positioning shaft is inserted into the positioning groove.

[0006] Preferably, a first ring is installed outside the propeller, a second ring is installed outside the marine power main shaft, and the first ring and the second ring are connected by a connecting structure. The number of the connecting structures is four, and the connecting structures are annularly and equidistantly distributed between the first ring and the second ring;

[0007] The connecting structure includes a bolt and a nut. The bolt is installed on the first ring, an installation hole is provided on the second ring, the installation hole corresponds to the bolt, the bolt passes through the installation hole, and the nut is sleeved on the bolt.

[0008] Preferably, a fastening structure is installed between the bolt and the nut, and the fastening structure corresponds to the nut. The fastening structure includes a circular groove, a clamping groove, a circular block, a clamping block, and a threaded hole;

[0009] The circular groove is opened on the nut, the clamping groove is opened on the circular groove, the clamping block is installed on the circular block, the threaded hole is opened on the circular block, the circular block is placed in the circular groove, the clamping block is clamped in the clamping groove, and the bolt is sleeved in the threaded hole.

[0010] Preferably, a screwing structure is installed on the nut. The screwing structure is arranged corresponding to the nut. The screwing structure includes a threaded groove, a threaded block and a hexagonal hole.

[0011] The threaded groove is opened on the nut, the threaded block is sleeved in the threaded groove, and the hexagonal hole is opened on the threaded block.

[0012] Preferably, a cutting plate is installed on the propeller. The number of the cutting plates is four, and the cutting plates are annularly and equidistantly distributed on the propeller.

[0013] Compared with the prior art, the beneficial effect of this patent is that the marine propeller combined structure has the following advantages compared with the traditional technology:

[0014] The main shaft of the ship's power drives the propeller to rotate through a bearing in the protective cover structure, providing power for the ship to move forward. The protective cover structure protects the propeller from hitting the reef. When the propeller rotates, it drives the first scraper to rotate around the front half of the protective cover structure. At the same time, the propeller drives the second scraper to rotate around the rear half of the protective cover structure through a cross bar, avoiding the parasitic organisms on the outside of the protective cover structure due to the ship being immersed in water for a long time, which increases the weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of this patent;

[0016] Figure 2 It is a schematic structural diagram of the propeller, positioning shaft and positioning groove of this patent;

[0017] Figure 3 It is a schematic structural diagram of the threaded groove, threaded block and hexagonal hole of this patent;

[0018] Figure 4 It is a schematic structural diagram of A of this patent.

[0019] In the figure: 1. Propeller, 2. Main shaft of ship's power, 3. Cutting plate, 4. Connection structure, 401. Bolt, 402. Nut, 5. Protective cover structure, 6. Rotating shaft, 7. Circular opening, 8. Bearing, 9. First scraper, 10. Cross bar, 11. Second scraper, 12. First ring, 13. Second ring, 14. Positioning shaft, 15. Positioning groove, 16. Fastening structure, 17. Circular groove, 18. Clamping groove, 19. Circular block, 20. Clamping block, 21. Threaded hole, 22. Screwing structure, 23. Threaded groove, 24. Threaded block, 25. Hexagonal hole. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present patent will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present patent. Obviously, the described embodiments are only a part of the embodiments of the present patent, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present patent without creative efforts shall fall within the protection scope of the present patent.

[0021] Please refer to Figures 1-4 , the present patent provides a technical solution: a marine propeller combination structure, including a propeller 1 and a protective cover structure 5. A marine power main shaft 2 is connected to the propeller 1, and a rotating shaft 6 is installed on the protective cover structure 5. The number of the rotating shafts 6 is two, and the rotating shafts 6 are symmetrically distributed on both sides with the midline of the protective cover structure 5 as the center. The rotating shafts 6 are rotatably installed on the ship through external sealed bearings. A circular opening 7 is provided on the protective cover structure 5, and a bearing 8 is installed in the circular opening 7. The propeller 1 is installed in the bearing 8. The marine power main shaft 2 drives the propeller 1 to rotate in the protective cover structure 5 through the bearing 8 to provide power for the ship to move forward, and the protective cover structure 5 protects the propeller 1 to prevent it from hitting a reef. A first scraper 9 is installed on the propeller 1, and the first scraper 9 is placed outside the front half of the protective cover structure 5. The distance between the first scraper 9 and the outside of the protective cover structure 5 is 0.5 - 1 cm. A cross bar 10 is installed on the propeller 1, and a second scraper 11 is installed on the cross bar 10. The second scraper 11 is placed outside the rear half of the protective cover structure 5. The distance between the second scraper 11 and the outside of the protective cover structure 5 is 0.5 - 1 cm. When the propeller 1 rotates, it drives the first scraper 9 to rotate around the front half of the protective cover structure 5. At the same time, the propeller 1 drives the second scraper 11 to rotate around the rear half of the protective cover structure 5 through the cross bar 10, avoiding parasites attaching to the outside of the protective cover structure 5 when the ship is immersed in water for a long time and increasing the weight.

[0022] A positioning shaft 14 is installed on the propeller 1, and a positioning groove 15 is provided on the marine power main shaft 2. The positioning shaft 14 is inserted into the positioning groove 15. During installation, the propeller 1 moves closer to the side of the marine power main shaft 2, so that the positioning shaft 14 is inserted into the positioning groove 15, positioning and connecting the propeller 1 and the marine power main shaft 2;

[0023] A first ring 12 is installed outside the propeller 1, and a second ring 13 is installed outside the marine power main shaft 2. The first ring 12 and the second ring 13 are connected by a connecting structure 4. The number of the connecting structures 4 is four, and the connecting structures 4 are annularly and equidistantly distributed between the first ring 12 and the second ring 13;

[0024] The connecting structure 4 includes a bolt 401 and a nut 402. The bolt 401 is installed on the first ring 12. An installation hole is provided on the second ring 13, and the installation hole is arranged corresponding to the bolt 401. The bolt 401 passes through the installation hole, and the nut 402 is sleeved on the bolt 401. When the propeller 1 is positioned and connected to the ship power main shaft 2, the first ring 12 approaches the first ring 13, so that the bolt 401 passes through the installation hole, and then the nut 402 is screwed onto the bolt 401 to connect the propeller 1 and the ship power main shaft 2;

[0025] A fastening structure 16 is installed between the bolt 401 and the nut 402. The fastening structure 16 is arranged corresponding to the nut 402. The fastening structure 16 includes a circular groove 17, a clamping groove 18, a circular block 19, a clamping block 20 and a threaded hole 21;

[0026] The circular groove 17 is opened on the nut 402, the clamping groove 18 is opened on the circular groove 17, the clamping block 20 is installed on the circular block 19, the threaded hole 21 is opened on the circular block 19, the circular block 19 is placed in the circular groove 17, the clamping block 20 is clamped in the clamping groove 18, and the bolt 401 is sleeved in the threaded hole 21. When the circular block 19 is put into the circular groove 17, at this time the clamping block 20 is clamped into the clamping groove 18, and when the nut 402 is screwed onto the bolt 401, the bolt 401 is screwed into the threaded hole 21 on the circular block 19, so that the nut 402 and the bolt 401 are double-fastened, enhancing the connection between the propeller 1 and the ship power main shaft 2;

[0027] A screwing structure 22 is installed on the nut 402. The screwing structure 22 is arranged corresponding to the nut 402. The screwing structure 22 includes a threaded groove 23, a threaded block 24 and a hexagonal hole 25;

[0028] The threaded groove 23 is opened on the nut 402, the threaded block 24 is sleeved in the threaded groove 23, and the hexagonal hole 25 is opened on the threaded block 24. The external hexagonal wrench is inserted into the hexagonal hole 25 to screw the threaded block 24, so that the nut 402 is screwed onto the bolt 401. When the hexagonal hole 25 is worn, the threaded block 24 is screwed off from the threaded groove 23 for replacement, without the need to replace the nut 402.

[0029] A splitting plate 3 is installed on the propeller 1. The number of the splitting plates 3 is four, and the splitting plates 3 are annularly and equidistantly distributed on the propeller 1. When the propeller 1 rotates, it drives the splitting plates 3 to rotate, so that the water forms a vortex, dispersing the resistance generated by the water to the forward protective cover structure 5. As the splitting plates 3 rotate, it can prevent parasites from attaching to the front surface of the protective cover structure 5.

[0030] When using this marine propeller combination structure, during the initial installation, the propeller 1 moves closer to the side of the marine power main shaft 2, so that the positioning shaft 14 is inserted into the positioning groove 15, positioning and connecting the propeller 1 with the marine power main shaft 2. When the propeller 1 is positioned and connected to the marine power main shaft 2, the first ring 12 approaches the first ring 13, and the round block 19 is placed into the round groove 17. At this time, the clamping block 20 snaps into the clamping groove 18. When the nut 402 is screwed onto the bolt 401, the bolt 401 is screwed into the threaded hole 21 on the round block 19, achieving double fastening of the nut 402 and the bolt 401, strengthening the connection between the propeller 1 and the marine power main shaft 2. During use, the marine power main shaft 2 drives the propeller 1 to rotate within the protective cover structure 5 through the bearing 8, providing power for the ship to move forward. The protective cover structure 5 protects the propeller 1 from hitting reefs. When the propeller 1 rotates, it drives the first scraper 9 to rotate around the front half of the protective cover structure 5. At the same time, the propeller 1 drives the second scraper 11 to rotate around the rear half of the protective cover structure 5 through the cross bar 10, preventing parasites from parasitizing on the outside of the protective cover structure 5 due to the ship being immersed in water for a long time and increasing the weight. When the marine power main shaft 2 drives the propeller 1 to swing left and right, causing the ship to move forward in reverse, the rotating shaft 6 on the protective cover structure 5 rotates along the ship through an external sealed bearing, changing the direction. While the propeller 1 is rotating, it drives the splitting plate 3 to rotate, forming a vortex in the water and dispersing the resistance generated by the water on the forward protective cover structure 5.

[0031] Although the embodiments of this patent 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 principles and spirit of this patent. The scope of this patent is defined by the appended claims and their equivalents.

Claims

1. A marine propeller assembly structure, comprising a propeller (1) and a protective cover structure (5), characterized in that: The propeller (1) is connected to a ship power main shaft (2); the protective cover structure (5) is provided with a rotating shaft (6); the number of the rotating shafts (6) is two, and the rotating shafts (6) are symmetrically distributed on both sides with the center line of the protective cover structure (5) as the center; the protective cover structure (5) is provided with a circular opening (7), a bearing (8) is installed in the circular opening (7), the propeller (1) is installed in the bearing (8), the propeller (1) is provided with a first scraper (9), and the first scraper (9) is arranged outside the front half of the protective cover structure (5); the propeller (1) is provided with a cross bar (10), and the cross bar (10) is provided with a second scraper (11), and the second scraper (11) is arranged outside the rear half of the protective cover structure (5).

2. A marine propeller assembly structure according to claim 1, characterized in that: A positioning shaft (14) is installed on the propeller (1), a positioning groove (15) is provided on the ship power main shaft (2), and the positioning shaft (14) is inserted into the positioning groove (15).

3. A marine propeller assembly structure according to claim 1, characterized in that: A first circular ring (12) is mounted outside the propeller (1), and a second circular ring (13) is mounted outside the ship power main shaft (2); the first circular ring (12) and the second circular ring (13) are connected via a connecting structure (4); the number of the connecting structures (4) is four, and the connecting structures (4) are distributed in an annular shape and equidistantly between the first circular ring (12) and the second circular ring (13); The connection structure (4) comprises a bolt (401) and a nut (402); the bolt (401) is mounted on the first circular ring (12); a mounting hole is provided on the second circular ring (13); the mounting hole is arranged corresponding to the bolt (401); the bolt (401) passes through the mounting hole; and the nut (402) is sleeved on the bolt (401).

4. A marine propeller assembly structure according to claim 3, characterized in that: A fastening structure (16) is installed between the bolt (401) and the nut (402), the fastening structure (16) and the nut (402) being arranged correspondingly, the fastening structure (16) comprising a circular groove (17), a clamping groove (18), a circular block (19), a clamping block (20) and a threaded hole (21); The circular groove (17) is formed on the nut (402), the clamping groove (18) is formed on the circular groove (17), the clamping block (20) is mounted on the circular block (19), the threaded hole (21) is formed on the circular block (19), the circular block (19) is placed in the circular groove (17), the clamping block (20) is clamped in the clamping groove (18), and the bolt (401) is sleeved in the threaded hole (21).

5. A marine propeller assembly structure according to claim 3, characterized in that: A screwing structure (22) is mounted on the nut (402), the screwing structure (22) being arranged corresponding to the nut (402), the screwing structure (22) comprising a thread groove (23), a thread block (24) and a hexagonal hole (25); The thread groove (23) is formed on the nut (402), the thread block (24) is sleeved in the thread groove (23), and the hexagonal hole (25) is formed on the thread block (24).

6. A marine propeller assembly structure according to claim 1, characterized in that: The propeller (1) is provided with a splitting plate (3), the number of the splitting plates (3) is four, and the splitting plates (3) are distributed in an annular shape and at equal intervals on the propeller (1).

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