Mechanical forward and reverse rotation self-tightening propeller assembly

Abstract

The utility model discloses a mechanical forward and reverse rotation self-tightening propeller assembly which comprises a waterproof frame, a swing blade rod, a double-gear shaft and a clutch shaft. The side edge of the waterproof frame is provided with a waterproof cover. The top of the waterproof frame is provided with a gearbox cover. The swinging blade rod is arranged on the side edge of the waterproof frame, and a rotating rod is arranged on the inner side of the swinging blade rod; the double-row gear B is in stable transmission connection with the double-row gear A arranged on one side of the surface of the rotating rod in a sleeving mode through the tough and precise toothed chain, under the meshing action of the toothed chain, circular motion of the double-row gear B is accurately transmitted to the double-row gear A without mistakes, the double-row gear A is promoted to rotate along with the double-row gear A, and rotating power is smoothly transmitted to the propeller to drive the propeller to rotate; the spring in the reversing shaft always applies appropriate elastic force to the conversion head, when an operator manually operates the reversing handle, the applied external force overcomes the elastic force of the spring, and the displacement of the conversion head can cause the change of the meshing mode or transmission path between the toothed chain and the double-row gear A and the double-row gear B.

Description

Technical Field

[0001] This utility model relates to the field of propeller technology, specifically a mechanically reversible self-tightening propeller assembly. Background Technology

[0002] Propeller units play a crucial role in numerous industrial and civilian sectors. Traditional propeller assemblies primarily rely on belt drives for transmission. While belt drives offer advantages such as flexible connections (e.g., buffering impacts and absorbing vibrations) and relatively simple installation, they also have several significant drawbacks. During long-term operation, belts are prone to wear and aging, leading to a gradual decrease in tension and subsequent slippage. This slippage not only drastically reduces power transmission efficiency, wasting energy, but also causes instability in the transmission ratio, severely impacting the propeller's speed control precision and failing to meet the demands of some operating scenarios requiring high speed stability.

[0003] In light of this, we have introduced a mechanically reversible self-tightening propeller assembly. Utility Model Content

[0004] The purpose of this invention is to provide a mechanically reversible self-tightening propeller assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical reversible self-tightening propeller assembly, comprising: a waterproof frame, a swing blade rod, a double-toothed shaft, and a clutch shaft;

[0006] The waterproof frame is provided with a waterproof cover on its side and a gearbox cover on its top.

[0007] The swing blade rod is set on the side of the waterproof frame. A rotating rod is set on the inner side of the swing blade rod. One end of the rotating rod is connected to one side of the waterproof cover. A bearing A is set on one side of the surface of the rotating rod. One end of the rotating rod passes through the swing blade rod and is connected to a propeller. A pin is connected to the surface of the propeller and passes through the propeller and enters into the interior of the rotating rod.

[0008] The double toothed shaft is located inside the gearbox cover. A bearing B is provided on one side of the double toothed shaft, and a bearing C is provided on the other side of the double toothed shaft.

[0009] The clutch shaft is located inside the gearbox cover, and a transmission mechanism is provided between the clutch shaft and the rotating rod. Through the cooperation of the double-row gear A, double-row gear B and the gear chain of the transmission mechanism, the rotating rod and the propeller are driven to rotate in both directions.

[0010] Preferably, the transmission mechanism includes a nut A connected to one side of a double-row gear B, the double-row gear B being connected to one side of the clutch shaft surface, the double-row gear A being sleeved on one side of the rotating rod surface, the nut B being connected to the side of the double-row gear A and screwed to one side of the rotating rod, and the gear chain connecting the double-row gear A and the double-row gear B.

[0011] Preferably, a gearbox cover is connected to one side of the gearbox cover, and a fixing plate is connected to one side of the gearbox cover.

[0012] Preferably, a conversion shaft is connected to the inner side of the gearbox cover, a roller bearing body A is connected to one side of the conversion shaft, a conversion tooth is connected to the surface of the conversion shaft on one side of the roller bearing body A, a positioning piece is connected to one side of the conversion tooth, and a sealing ring A is connected to one side of the positioning piece.

[0013] Preferably, a positioning pin is connected to the surface of the clutch shaft, a clutch core is connected to one side of the surface of the clutch shaft, a clutch tooth A is connected to the surface of the clutch core, and a limit plate A, a roller bearing body B, a friction ring A, a retaining ring A, a retaining plate A, a tapered bearing body A, a sliding pad and a nut C are respectively connected between the surface of the clutch shaft and the gearbox cover on one side of the clutch tooth A.

[0014] Preferably, a clutch tooth B is connected to the other side of the clutch shaft, a limiting plate B is connected to one side of the clutch tooth B, a roller bearing body C is connected to one side of the limiting plate B, and a friction ring B, a retaining ring B, a retaining plate B, and a tapered bearing body B are respectively connected between one side of the roller bearing body C and the fixed plate.

[0015] Preferably, a reversing shaft is connected to the side of the gearbox cover, a spring is connected inside the reversing shaft, a conversion head is connected inside the spring, and a sealing ring B, a reversing sleeve, a sealing ring C, and a reversing handle are respectively connected to one side of the reversing shaft.

[0016] Preferably, an oil plug side bar is connected to the top side of the gearbox cover.

[0017] Preferably, a protective cover is connected to the side of the waterproof frame, a tensioning block is connected inside the protective cover, torsion springs are connected to both sides of the tensioning block, a pin is connected to one side of the torsion spring, a steel ring is connected to one side of the pin, and a retaining ring is connected to one side of the steel ring.

[0018] Preferably, bolt A connects the waterproof cover and the waterproof frame, and bolt B connects the gearbox cover and the fixing plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] (1) The clutch shaft is the core component for power input. When the external power source (such as a motor) drives the clutch shaft to rotate, the double row gear B, which is tightly connected to its surface, rotates synchronously around the shaft core. The double row gear B forms a stable transmission connection with the double row gear A, which is sleeved on one side of the rotating rod surface, through a tough and precise tooth chain. Under the meshing action of the tooth chain, the circular motion of the double row gear B is accurately transmitted to the double row gear A, causing it to rotate. One end of the rotating rod passes through the swing blade rod and is reliably connected to the propeller, thus smoothly transmitting the rotational power to the propeller and driving it to rotate. In this process, the tension of the tooth chain and the meshing accuracy of the gears are crucial. They together ensure the efficiency and stability of power transmission, enabling the propeller to obtain continuous and stable rotational power.

[0021] (2) The reversing shaft on the side of the gearbox cover is the key hub for switching the propeller forward and reverse. The spring inside the reversing shaft always applies a moderate elastic force to the conversion head, keeping it in a specific initial position or stable working state under normal conditions. When the operator manually operates the reversing handle, the applied external force overcomes the elastic force of the spring and pushes the conversion head to move along the precisely designed track inside the reversing shaft. The displacement of the conversion head will cause a change in the meshing mode or transmission path between the gear chain and the double row gears A and B. For example, it may change the original clockwise rotation drive mode of the gear chain to counterclockwise rotation drive mode, thereby reversing the rotation direction of the double row gears A, and finally realizing the forward and reverse switching of the propeller. This process requires precise cooperation and coordinated movement between various components. Any slight deviation may affect the accuracy and smoothness of the forward and reverse switching. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] In the diagram: 1. Waterproof cover; 2. Bolt A; 3. Gear chain; 4. Nut B; 5. Double row gear A; 6. Rotating rod; 7. Bearing A; 8. Waterproof frame; 9. Oscillating blade rod; 10. Propeller; 11. Pin; 12. Snap ring; 13. Steel ring; 14. Pin shaft; 15. Torsion spring; 16. Tensioning block; 17. Protective cover; 18. Reversing handle; 19. Sealing ring C; 20. Reversing sleeve; 21. Sealing ring B; 22. Reversing shaft; 23. Spring; 24. Adapter head; 25. Fixing plate; 26. Double row gear B; 27. Nut A; 28. Bolt B; 29. ​​Gearbox cover; 30. Oil plug side bar; 31. Adapter shaft 32. Roller bearing body A; 33. Converter gear; 34. Locating plate; 35. Sealing ring A; 36. Bearing B; 37. Double gear shaft; 38. Bearing C; 39. Limiting plate A; 40. Roller bearing body B; 41. Friction ring A; 42. Retaining ring A; 43. Baffle plate A; 44. Tapered roller bearing body A; 45. Sliding pad; 46. Nut C; 47. Clutch gear A; 48. Clutch core; 49. Locating pin; 50. Clutch shaft; 51. Clutch gear B; 52. Limiting plate B; 53. Roller bearing body C; 54. Friction ring B; 55. Retaining ring B; 56. Baffle plate B; 57. Tapered roller bearing body B; 58. Gearbox cover. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 This utility model provides a technical solution: a mechanical forward and reverse self-tightening propeller assembly, including: a waterproof frame 8, a waterproof cover 1 provided on the side of the waterproof frame 8, and a gearbox cover 29 provided on the top of the waterproof frame 8;

[0026] A swing blade rod 9 is provided on the side of the waterproof frame 8. A rotating rod 6 is provided on the inner side of the swing blade rod 9. One end of the rotating rod 6 is connected to one side of the waterproof cover 1. A bearing A7 is provided on one side of the surface of the rotating rod 6. One end of the rotating rod 6 passes through the swing blade rod 9 and is connected to a propeller 10. A pin 11 is connected to the surface of the propeller 10 and passes through the propeller 10 and enters into the interior of the rotating rod 6.

[0027] A double-toothed shaft 37 is disposed inside the gearbox cover 29. A bearing B36 is disposed on one side of the double-toothed shaft 37, and a bearing C38 is disposed on the other side of the double-toothed shaft 37.

[0028] The clutch shaft 50 is located inside the gearbox cover 29. A transmission mechanism is provided between the clutch shaft 50 and the rotating rod 6. Through the cooperation of the double row gear A5, double row gear B26 and gear chain 3 of the transmission mechanism, the rotating rod 6 and the propeller 10 are driven to rotate in both directions.

[0029] The transmission mechanism includes a nut A27 connected to one side of a double-row gear B26. The double-row gear B26 is connected to one side of the surface of the clutch shaft 50. The double-row gear A5 is sleeved on one side of the surface of the rotating rod 6. A nut B4 is connected to the side of the double-row gear A5 and screwed to one side of the rotating rod 6. The gear chain 3 is connected to the double-row gear A5 and the double-row gear B26.

[0030] A gearbox cover 58 is connected to one side of the gearbox cover 29, and a fixing plate 25 is connected to one side of the gearbox cover 29.

[0031] The inner side of the gearbox cover 58 is connected to a conversion shaft 31. One side of the conversion shaft 31 is connected to a roller bearing body A32. The surface of the conversion shaft 31 is connected to a conversion gear 33 on one side of the roller bearing body A32. One side of the conversion gear 33 is connected to a positioning piece 34. One side of the positioning piece 34 is connected to a sealing ring A35.

[0032] The surface of the clutch shaft 50 is connected to a positioning pin 49, and a clutch core 48 is connected to one side of the surface of the clutch shaft 50. The surface of the clutch core 48 is connected to a clutch tooth A47. The surface of the clutch shaft 50 located between the clutch tooth A47 and the gearbox cover 58 is connected to a limiting plate A39, a roller bearing body B40, a friction ring A41, a retaining ring A42, a retaining plate A43, a tapered bearing body A44, a sliding pad 45, and a nut C46.

[0033] The clutch shaft 50 is connected to a clutch tooth B51 on the other side. A limiting plate B52 is connected to one side of the clutch tooth B51. A roller bearing body C53 is connected to one side of the limiting plate B52. A friction ring B54, a retaining ring B55, a retaining plate B56, and a tapered bearing body B57 are respectively connected between one side of the roller bearing body C53 and the fixing plate 25.

[0034] The gearbox cover 29 is connected to a reversing shaft 22 on its side. A spring 23 is connected inside the reversing shaft 22. A conversion head 24 is connected inside the spring 23. A sealing ring B21, a reversing sleeve 20, a sealing ring C19, and a reversing handle 18 are connected to one side of the reversing shaft 22.

[0035] The top side of the gearbox cover 29 is connected to an oil plug side bar 30.

[0036] The waterproof frame 8 is connected to a protective cover 17 on its side. A tensioning block 16 is connected inside the protective cover 17. Torsion springs 15 are connected to both sides of the tensioning block 16. A pin 14 is connected to one side of the torsion spring 15. A steel ring 13 is connected to one side of the pin 14. A retaining ring 12 is connected to one side of the steel ring 13.

[0037] Bolt A2 connects the waterproof cover 1 to the waterproof frame 8, and bolt B28 connects the gearbox cover 29 to the fixing plate 25.

[0038] The waterproof frame 8 and the waterproof cover 1 are connected by bolts A2. The waterproof frame 8 serves as the main support structure, and the waterproof cover 1 is tightly installed on its side. The two are firmly connected to form the first waterproof barrier, which effectively resists the intrusion of external water and ensures the normal operation of internal mechanical parts.

[0039] A protective cover 17 is also provided on the side of the waterproof frame 8. Inside the cover is a tension block 16. The tension block 16 is elastically supported by torsion springs 15 on both sides. One end of the torsion spring 15 is connected to a pin 14. The pin 14 passes through the steel ring 13 and is fixed by a retaining spring 12. This structure can not only buffer external impacts, but also further enhance waterproof sealing and protect the core components.

[0040] The swing blade rod 9 is precisely installed on the side of the waterproof frame 8, and the inner side is rotatably connected to the rotating rod 6. One end of the rotating rod 6 is firmly connected to one side of the waterproof cover 1, and a bearing A7 is installed on one side of its surface to ensure smooth rotation without jamming and reduce friction loss.

[0041] One end of the rotating rod 6 passes through the swing blade rod 9 and is rigidly connected to the propeller 10. The propeller 10 is fixed in place by a pin 11 that passes through its disk and extends into the interior of the rotating rod 6, ensuring reliable connection between the propeller 10 and the rotating rod 6 and stable power transmission under high-speed rotation and complex stress conditions.

[0042] The double-toothed shaft 37, located inside the gearbox cover 29, is the key to the transmission. It is supported and positioned on both sides by bearings B36 and C38, respectively, to ensure coaxial stability during high-speed operation. The clutch shaft 50 is also housed inside the gearbox cover 29, forming a precision transmission link with the rotating rod 6.

[0043] The transmission mechanism mainly relies on the close cooperation of double-row gears A5 and B26 and gear chain 3. One side of double-row gear B26 is fixed to one side of the clutch shaft 50 by nut A27, and double-row gear A5 is sleeved on one side of the rotating rod 6 and fastened by side nut B4. Gear chain 3 precisely meshes with double-row gears A5 and B26 to achieve efficient and precise power transmission, driving rotating rod 6 and propeller 10 to rotate in both directions to meet the propulsion requirements of different working conditions.

[0044] The clutch shaft 50 has key components arranged at multiple points on its surface. First, it is connected to a positioning pin 49 for precise positioning. The clutch teeth A47 on one side of the clutch core 48 mesh with the corresponding components to achieve clutch switching. On one side of the clutch teeth A47 and between the gearbox cover 58, the limit plate A39, the roller bearing body B40, the friction ring A41, the retaining ring A42, the retaining plate A43, the tapered bearing body A44, the sliding pad 45, and the nut C46 are sequentially assembled. All components work together to ensure a smooth and reliable clutch process and effectively avoid power shock and wear.

[0045] On the other side of the clutch shaft 50, the clutch tooth B51 engages with the limiting plate B52 and the roller bearing body C53. A friction ring B54, a retaining ring B55, a retaining plate B56, and a tapered bearing body B57 are assembled between one side of the roller bearing body C53 and the fixed plate 25. The dual-sided clutch design enables rapid response and flexible operation when switching between forward and reverse directions, greatly improving the adaptability of the component to complex power requirements.

[0046] One side of the gearbox cover 29 is connected to the fixing plate 25 by bolt B28, and the other side is connected to the gearbox cover 58. The roller bearing body A32, the conversion gear 33, the positioning plate 34 and the sealing ring A35 are sequentially mounted on the conversion shaft 31 inside the gearbox cover 58. The conversion gear 33 is a key part for receiving control commands and accurately links the internal transmission and clutch mechanism to realize the switching of forward and reverse modes.

[0047] A spring 23 is built into the reversing shaft 22 on the side of the gearbox cover 29. The center of the spring 23 is nested with the conversion head 24. From the outside to the inside, the reversing shaft 22 is connected to the sealing ring B21, the reversing sleeve 20, the sealing ring C19 and the reversing handle 18. By operating the reversing handle 18, the operator can easily switch the propeller 10's direction by means of the spring force of the spring 23 and the mechanical transmission of the conversion head 24. The operation is comfortable and the feedback is clear.

[0048] The top side of the gearbox cover 29 is provided with an oil plug side bar 30, which facilitates the periodic injection of lubricating oil to maintain the good working condition of the internal transmission and clutch components, extend the overall service life of the components, and reduce maintenance costs.

[0049] This invention, through the ingenious design and close coordination of its various components, achieves stable and efficient forward and reverse power output in complex aquatic environments, providing a reliable power solution for aquatic equipment. It demonstrates superior performance advantages in various fields, including ship propulsion, aquatic platform drive, and the operation of special aquatic equipment, contributing to the efficient and safe conduct of aquatic operations.

[0050] Specifically, during use, the clutch shaft 50 is a key component for power input. When power is transmitted to the clutch shaft 50, the double row gear B26 connected to its surface rotates accordingly. The double row gear B26 is connected to the double row gear A5 sleeved on one side of the rotating rod 6 through the tooth chain 3. Due to the meshing action of the tooth chain 3, the rotation of the double row gear B26 can drive the double row gear A5 to rotate synchronously, thereby causing the rotating rod 6 to rotate. One end of the rotating rod 6 passes through the swing blade rod 9 and is connected to the propeller 10, ultimately realizing the rotation of the propeller 10.

[0051] The reversing shaft 22 on the side of the gearbox cover 29 plays a core role in the forward and reverse switching. The spring 23 inside the reversing shaft 22 applies elastic force to the conversion head 24, keeping it in the initial position or stable working state. When the reversing handle 18 is operated, the external force overcomes the elastic force of the spring 23 and pushes the conversion head 24 to move within the reversing shaft 22. The movement of the conversion head 24 will change the meshing mode or transmission path of the gear chain 3 with the double row gear A5 and double row gear B26. For example, it may change the gear chain 3 from one winding mode to another winding mode, thereby changing the rotation direction of the double row gear A5 and realizing the forward and reverse switching of the propeller 10.

[0052] The bearing A7 on one side of the rotating rod 6 provides stable support for the rotating rod 6, reducing friction and wear during rotation, and ensuring that the rotating rod 6 can smoothly drive the propeller 10 to rotate. The bearings B36 and C38 on both sides of the double gear shaft 37 also play the role of supporting the double gear shaft 37, ensuring the stable position of the double gear shaft 37 in the gearbox cover 29, so that it can effectively participate in the transmission process and maintain the stability of the entire transmission system.

[0053] The locating pin 49 on the surface of the clutch shaft 50 is used to determine the relative position of the clutch shaft 50 and other components to ensure the accuracy of transmission. The clutch core 48 and the clutch teeth A47 on its surface work together with the relevant components on one side of the gearbox cover 58 (such as the limiting plate A39, the roller bearing body B40, etc.). During the power transmission process, these components ensure that the power of the clutch shaft 50 can be stably transmitted to the double row gear B26 through friction, limiting and other actions. Furthermore, under forward and reverse switching or different working conditions, the clutch shaft 50 can be effectively connected or separated from other components to ensure the reliability and flexibility of the transmission system.

[0054] The conversion shaft 31 inside the gearbox cover 58 and its connected components, such as the roller bearing body A32, conversion gear 33, positioning plate 34, and sealing ring A35, play a role in auxiliary transmission, positioning, and sealing during the transmission process. For example, the conversion gear 33 may participate in certain specific transmission path switching or power distribution processes, while the sealing ring A35 prevents lubricating oil leakage and ensures the lubrication environment inside the gearbox. The clutch gear B51, limiting plate B52, roller bearing body C53, friction ring B54, retaining ring B55, retaining plate B56, and tapered bearing body B57 connected between the clutch shaft 50 and the fixed plate 25 also play an indispensable role in power transmission and stable support, ensuring that the clutch shaft 50 can work stably under different working conditions and maintain the balance and reliable operation of the entire transmission system.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanically reversible self-tightening propeller assembly, characterized in that, include: Waterproof frame (8), the side of the waterproof frame (8) is provided with a waterproof cover (1), and the top of the waterproof frame (8) is provided with a gearbox cover (29). A swing blade rod (9) is provided on the side of the waterproof frame (8). A rotating rod (6) is provided on the inner side of the swing blade rod (9). One end of the rotating rod (6) is connected to one side of the waterproof cover (1). A bearing A (7) is provided on one side of the surface of the rotating rod (6). One end of the rotating rod (6) passes through the swing blade rod (9) and is connected to a propeller (10). A pin (11) is connected to the surface of the propeller (10), and the pin (11) passes through the propeller (10) and enters the interior of the rotating rod (6). A double-toothed shaft (37) is disposed inside the gearbox cover (29). A bearing B (36) is disposed on one side of the double-toothed shaft (37), and a bearing C (38) is disposed on the other side of the double-toothed shaft (37). The clutch shaft (50) is located inside the gearbox cover (29). A transmission mechanism is provided between the clutch shaft (50) and the rotating rod (6). Through the cooperation of the double row gear A (5), double row gear B (26) and gear chain (3) of the transmission mechanism, the rotating rod (6) and the propeller (10) are driven to rotate in both directions.

2. The mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, The transmission mechanism includes a nut A (27) connected to one side of a double row gear B (26), the double row gear B (26) being connected to one side of the surface of a clutch shaft (50), the double row gear A (5) being sleeved on one side of the surface of a rotating rod (6), a nut B (4) being connected to the side of the double row gear A (5), and the nut B (4) being screwed to one side of the rotating rod (6), and the gear chain (3) being connected to the double row gear A (5) and the double row gear B (26).

3. The mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, A gearbox cover (58) is connected to one side of the gearbox cover (29), and a fixing plate (25) is connected to one side of the gearbox cover (29).

4. A mechanically reversible self-tightening propeller assembly according to claim 3, characterized in that, The inner side of the gearbox cover (58) is connected to a conversion shaft (31), one side of the conversion shaft (31) is connected to a roller bearing body A (32), the surface of the conversion shaft (31) is connected to a conversion tooth (33) on one side of the roller bearing body A (32), one side of the conversion tooth (33) is connected to a positioning piece (34), and one side of the positioning piece (34) is connected to a sealing ring A (35).

5. A mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, The surface of the clutch shaft (50) is connected to a positioning pin (49), and a clutch core (48) is connected to one side of the surface of the clutch shaft (50). The surface of the clutch core (48) is connected to a clutch tooth A (47). The surface of the clutch shaft (50) located between the clutch tooth A (47) and the gearbox cover (58) is connected to a limiting plate A (39), a roller bearing body B (40), a friction ring A (41), a retaining ring A (42), a retaining plate A (43), a tapered bearing body A (44), a sliding pad (45), and a nut C (46).

6. A mechanically reversible self-tightening propeller assembly according to claim 5, characterized in that, The clutch shaft (50) is connected to a clutch tooth B (51) on the other side. A limiting plate B (52) is connected to one side of the clutch tooth B (51). A roller bearing body C (53) is connected to one side of the limiting plate B (52). A friction ring B (54), a retaining ring B (55), a retaining plate B (56), and a tapered bearing body B (57) are respectively connected between one side of the roller bearing body C (53) and the fixing plate (25).

7. A mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, The gearbox cover (29) is connected to a reversing shaft (22) on its side. A spring (23) is connected inside the reversing shaft (22). A converter head (24) is connected inside the spring (23). A sealing ring B (21), a reversing sleeve (20), a sealing ring C (19), and a reversing handle (18) are connected to one side of the reversing shaft (22).

8. A mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, The top side of the gearbox cover (29) is connected to an oil plug side bar (30).

9. A mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, The waterproof frame (8) is connected to a protective cover (17) on its side. The protective cover (17) is connected to a tension block (16) inside. The tension block (16) is connected to torsion springs (15) on both sides. The torsion springs (15) are connected to a pin (14) on one side. The pin (14) is connected to a steel ring (13) on one side. The steel ring (13) is connected to a retaining ring (12) on one side.

10. A mechanically reversible self-tightening propeller assembly according to claim 1, characterized in that, Bolt A (2) connects the waterproof cover (1) and the waterproof frame (8), and bolt B (28) connects the gearbox cover (29) and the fixing plate (25).

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