Propeller dismounting device

Abstract

The utility model belongs to the technical field of propeller dismounting, and particularly relates to a propeller dismounting device which comprises a first flange, a second flange and a set of screws. The screw comprises a screw body and an end fixed to one end of the screw body, and a threaded section is arranged at the other end of the screw body. The screw rod penetrates through the first flange and the second flange; the first flange is located on the side close to the end, and the second flange is located on the side away from the end. A nut is arranged at the tail end of the threaded section; the first flange is provided with a locking opening in the radial direction. And through the cooperation of the nut and the second flange, the first flange pushes the propeller to slide, so that the disassembly of the propeller is more time-saving and labor-saving, and the efficiency and the safety in the operation process are improved. And the propelling part is arranged on the first flange, so that direct contact between the first flange and the propeller blades is avoided, and damage to the propeller in the dismounting process is avoided. In addition, the propeller dismounting device is simpler and more convenient to manufacture, and long-term manufacturing and using are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of propeller disassembly technology, specifically relating to a propeller disassembly device. Background Technology

[0002] As a key component of a ship's propulsion system, the propeller's performance directly affects the ship's propulsion efficiency and safety. With the development of the shipbuilding industry, especially when rapid replacement or repair of propellers is required, the disassembly of propellers faces even greater challenges.

[0003] like Figure 1 and Figure 2 The image shows one of the common propeller installation methods today. The propeller passes through a threaded section and is installed on the mounting section. The front face of the propeller abuts against the limiting shaft, and the nut is installed on the threaded section, with its front face abutting against the rear face of the mounting section. Disassembly requires removing the nut first, followed by propeller removal. Traditional propeller disassembly methods are often complex and inefficient. They involve using auxiliary tools to tap the front face of the propeller hub to apply a backward pulling force, causing the propeller to gradually slide until it detaches from the mounting section. This method is particularly time-consuming and labor-intensive for large or tightly secured vessels, and may even damage the propeller itself, affecting its performance and lifespan. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a propeller disassembly device, which aims to disassemble the propeller in a more time-saving and labor-saving way and avoid damage to the propeller during the disassembly process.

[0005] To achieve the above objectives, this utility model provides a propeller disassembly device, comprising: a first flange, a second flange, and a set of screws; the screws include a screw body and an end fixed to one end of the screw body, and the other end of the screw body is provided with a threaded section; the screws pass through the first flange and the second flange; the first flange is located on the side adjacent to the end, and the second flange is located on the side away from the end; a nut is provided at the end of the threaded section; the first flange has a radial locking port.

[0006] The propeller's stern shaft consists of three parts: a limiting shaft, a mounting section, and a threaded section. The rear end face of the limiting shaft is connected to the front end face of the mounting section, and the rear end face of the mounting section is connected to the front end face of the threaded section. The propeller passes through the threaded section, and the propeller hub fits onto the mounting section. At this point, the rear end face of the limiting shaft abuts against the front end face of the hub. A locking nut is threaded onto the propeller section, and the front end face of the locking nut abuts against the rear end face of the mounting section. To disassemble the propeller, the locking nut of the threaded section must be removed first, and then the propeller hub is slid across the mounting section until it gradually detaches from the mounting section, thus completing the disassembly. When using a disassembly device to disassemble the propeller, the locking port of the first flange is engaged with the limiting shaft, the rear end face of the first flange abuts against the front end face of the hub, and one side end face of the second flange is close to the rear end face of the threaded section. The screw passes sequentially through the first flange, the propeller blade clearance, and the second flange, with the end of the screw tightly fitted against the first flange. A nut is threaded onto the screw. When using the propeller disassembly device, rotating the nut applies a backward pulling force to the screw, which in turn applies an axial pulling force to the first flange. As the screw drives the first flange to slide, the side of the first flange in contact with the propeller applies a compressive force to the propeller, thereby pushing the propeller to move together until it gradually detaches from the mounting section, thus completing the propeller disassembly process.

[0007] Furthermore, the first flange has a first flange hole in its circumference, and the second flange has a second flange hole in its circumference. Each bolt passes through a first flange hole and a second flange hole.

[0008] Multiple flange holes are provided on both the first and second flanges as stress points. Each flange hole corresponds to a screw. The screw passes through the first flange hole and then through the second flange hole. The nut engages with the threaded section and abuts against the rear end face of the second flange, making the overall structure more stable.

[0009] Furthermore, the first flange includes an integrally joined flange portion and a push portion, the push portion being located on a side surface of the flange portion adjacent to the second flange, and the push portion protruding from the surface of the flange portion, the push portion being disposed along the root edge of the locking port.

[0010] When the propeller contacts the first flange, the propulsion section faces the propeller and protrudes, thus avoiding direct contact between the first flange and the propeller blades and preventing the propeller blades from breaking.

[0011] Furthermore, the propulsion section includes a first locking section, a connecting section, and a second locking section; the connecting section is connected to both ends of the first locking section and the second locking section; the connecting section is arc-shaped.

[0012] Furthermore, it also includes an adjusting block, which includes an integrally integrated axial adjusting part and a radial adjusting part; the radial adjusting part is located on the side surface of the axial adjusting part adjacent to the second flange, and the radial adjusting part protrudes from the surface of the axial adjusting part; the axial adjusting part is provided with a radially inclined secondary locking port, and the axial adjusting part is arranged along the root edge of the secondary locking port; the front end face of the axial adjusting part is in contact with the pushing part, the peripheral surface of the radial adjusting part is in contact with the inner surface of the root of the locking port, and the secondary locking port coincides with the locking port.

[0013] The aforementioned propeller disassembly device incorporates an adjusting block. Depending on the diameter of the limiting shaft, different sized secondary locking ports are selected for the adjusting block to match shafts of varying sizes, ensuring the inner surface of the adjusting block aligns with the limiting shaft. The axial adjusting part fits against the propulsion part, while the radial adjusting part fits tightly against the root of the locking port. After the diameter of the limiting shaft is properly matched with the secondary locking port, the rear surface of the axial adjusting part fits tightly against the propeller hub. When the rotating nut applies tension, the axial adjusting part applies axial compressive force to the propeller hub to disassemble the propeller.

[0014] Furthermore, the propulsion part is provided with a screw hole; the axial adjustment part is provided with a through hole; and the fastener passes through the screw hole and the through hole.

[0015] When the dimensions of the propeller shaft change and the locking port of the first flange is no longer suitable for the propeller shaft, an adjusting block needs to be installed to ensure that the first flange is stably fitted onto the propeller shaft.

[0016] Furthermore, both the axial adjustment section and the radial adjustment section are horseshoe-shaped.

[0017] Furthermore, the front end face of the second flange has a circular recess for inserting the propeller thread section.

[0018] The rear end face of the propeller threaded section abuts against the recessed part of the front end face of the second flange to prevent the propeller stern shaft from sliding due to the smooth surface of the second flange, which would affect the disassembly process.

[0019] Beneficial effects

[0020] The propeller disassembly device of this utility model, through the cooperation of the nut and the second flange, causes the first flange to push the propeller to slide, making the disassembly of the propeller more time-saving and labor-saving, and improving the efficiency and safety of the operation process.

[0021] The propeller disassembly device of this utility model avoids direct contact between the first flange and the propeller blades by setting a propulsion part on the first flange, thus avoiding damage to the propeller during the disassembly process.

[0022] The propeller disassembly device of this utility model mainly consists of a first flange, a second flange and a screw, which is easy to manufacture and conducive to long-term manufacturing and use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the propeller structure after the locking nut is removed in the background art.

[0024] Figure 2 This is a schematic diagram of the propeller stern shaft in the background art 1;

[0025] Figure 3 This is a schematic diagram of the propeller disassembly device in Example 1;

[0026] Figure 4 This is a schematic diagram of the screw structure in Example 1;

[0027] Figure 5 , Figure 6 This is a schematic diagram of the structure of the first flange in Example 1;

[0028] Figure 7 This is a schematic diagram of the propulsion section in the first flange of Example 1;

[0029] Figure 8 , Figure 9 This is a schematic diagram of the structure of the adjustment block in Example 1.

[0030] In the attached diagram: 1. First flange; 11. Flange part; 12. Pushing part; 121. First locking part; 122. Connecting part; 123. Second locking part; 124. Screw hole; 13. First flange hole; 14. Locking port; 2. Second flange; 21. Second flange hole; 3. Screw; 31. Screw body; 311. Threaded section; 32. End; 4. Adjusting block; 41. Axial adjustment part; 42. Radial adjustment part; 43. Secondary locking port; 44. Through hole; 5. Nut. Detailed Implementation

[0031] Example 1

[0032] like Figure 3 The propeller disassembly device shown includes a first flange 1, a second flange 2, and a set of screws 3; as shown Figure 4 The screw 3 shown includes a screw body 31 and an end 32 fixed to one end of the screw body 31. The other end of the screw body 31 is provided with a threaded section 311. The screw 3 passes through a first flange 1 and a second flange 2. The first flange 1 is located on the side adjacent to the end 32, and the second flange 2 is located on the side away from the end 32. A nut 5 is provided at the end of the threaded section 311. The first flange 1 has a radial locking port 14.

[0033] like Figure 1 and Figure 2 As shown, the stern shaft of the propeller consists of three parts: a limiting shaft, a mounting section, and a threaded section. The limiting shaft, mounting section, and threaded section correspond to... Figure 1A, B, and C are shown. The rear end face of the limiting shaft is connected to the front end face of the mounting section, and the rear end face of the mounting section is connected to the front end face of the threaded section. The propeller passes through the threaded section, and the propeller hub fits onto the mounting section. At this time, the rear end face of the limiting shaft abuts against the front end face of the hub. The locking nut is threaded onto the propeller section, and the front end face of the locking nut abuts against the rear end face of the mounting section. When disassembling the propeller, the locking nut of the threaded section must be removed first, and then the propeller hub is slid on the mounting section until it gradually detaches from the mounting section, thus completing the disassembly. When using the disassembly device to disassemble the propeller, the locking port 14 of the first flange 1 is engaged with the limiting shaft, the rear end face of the first flange 1 abuts against the front end face of the hub, and one side end face of the second flange 2 is close to the rear end face of the threaded section. The screw 3 passes through the first flange 1, the blade gap of the propeller, and the second flange 2 in sequence. The end 32 of the screw 3 is tightly fitted to the first flange 1, and the nut 5 is threaded onto the screw 3. When using the propeller disassembly device, rotating the nut 5 applies a backward pulling force to the screw 3, thereby applying an axial pulling force to the first flange 1. When the screw 3 drives the first flange 1 to slide, the side of the first flange 1 that contacts the propeller applies a compressive force to the propeller, thereby pushing the propeller to move together, causing the propeller to move until it gradually detaches from the mounting section, thus completing the propeller disassembly process.

[0034] like Figure 5 and Figure 6 As shown, the first flange 1 has a first flange hole 13 circumferentially, and the second flange 2 has a second flange hole 21 circumferentially. Each screw 3 passes through one first flange hole 13 and one second flange hole 21. Multiple flange holes are provided on both the first flange 1 and the second flange 2 as stress points. Each flange hole corresponds to one screw 3. The screw 3 passes through the first flange hole 13 and then through the second flange hole 21. The nut 5 engages with the threaded section 311 and abuts against the rear end face of the second flange 2, making the overall structure more stable.

[0035] In addition, such as Figure 5 The first flange 1 shown includes an integrally formed flange portion 11 and a push-in portion 12. The push-in portion 12 is located on the side surface of the flange portion 11 adjacent to the second flange 2, and protrudes from the surface of the flange portion 11. The push-in portion 12 is disposed along the root edge of the locking port 14. When the propeller contacts the first flange 1, because the push-in portion 12 faces the propeller and is protruding, direct contact between the first flange 1 and the propeller blades is avoided, thus preventing the propeller blades from breaking.

[0036] like Figure 6 As shown, the propulsion part 12 includes a first locking part 121, a connecting part 122, and a second locking part 123; the connecting part 122 is connected to the first locking part 121 and the second locking part 123 at both ends; the connecting part 122 is arc-shaped.

[0037] like Figure 8 and Figure 9 As shown, it also includes an adjusting block 4, which includes an integrally integrated axial adjusting part 41 and a radial adjusting part 42. The radial adjusting part 42 is located on the side surface of the axial adjusting part 41 adjacent to the second flange 2, and the radial adjusting part 42 protrudes from the surface of the axial adjusting part 41. The axial adjusting part 41 is provided with a radially inclined secondary locking port 43, and the axial adjusting part 41 is arranged along the root edge of the secondary locking port 43. The front end face of the axial adjusting part 41 is in contact with the pushing part 12, and the peripheral surface of the radial adjusting part 42 is in contact with the inner surface of the root of the locking port 14. The secondary locking port 43 coincides with the locking port 14.

[0038] The aforementioned propeller disassembly device includes an adjusting block 4. The adjusting block 4 uses different sized secondary locking ports 43 to match different shaft sizes, depending on the diameter of the limiting shaft, ensuring the inner surface of the adjusting block 4 matches the limiting shaft. The axial adjusting part 41 fits against the propulsion part 12, while the radial adjusting part 42 fits tightly against the root of the locking port 14. After the diameter of the limiting shaft matches the secondary locking port 43, the rear surface of the axial adjusting part 41 fits tightly against the propeller hub. When the rotating nut 5 applies tension, the axial adjusting part 41 applies axial compressive force to the propeller hub to disassemble the propeller.

[0039] The propulsion part 12 is provided with a screw hole 124; the axial adjustment part 41 is provided with a through hole 44; the fastener passes through the screw hole 124 and the through hole 44. The axial adjustment part 41 and the radial adjustment part 42 are both horseshoe-shaped.

[0040] When the size of the propeller shaft changes and the locking port 14 of the first flange 1 is no longer suitable for the propeller shaft, it is necessary to install the adjusting block 4 to ensure that the first flange 1 is stably fitted onto the propeller shaft.

[0041] The front end face of the second flange 2 has a circular recess for inserting the propeller thread section.

[0042] The rear end face of the propeller threaded section abuts against the recessed part of the front end face of the second flange 2 to prevent the propeller stern shaft from sliding due to the smooth surface of the second flange 2, which would affect the disassembly process.

Claims

1. A propeller disassembly device, characterized in that: It includes a first flange (1), a second flange (2), and a set of screws (3); the screws (3) include a screw body (31) and an end (32) fixed to one end of the screw body (31), and the other end of the screw body (31) is provided with a threaded section (311); the screws (3) pass through the first flange (1) and the second flange (2); the first flange (1) is located on the side adjacent to the end (32), and the second flange (2) is located on the side away from the end (32); the end of the threaded section (311) is provided with a nut (5); the first flange (1) has a radial locking port (14).

2. The propeller disassembly device according to claim 1, characterized in that: The first flange (1) has a first flange hole (13) in the circumferential direction, and the second flange (2) has a second flange hole (21) in the circumferential direction. Each screw (3) passes through a first flange hole (13) and a second flange hole (21).

3. The propeller disassembly device according to claim 1, characterized in that: The first flange (1) includes an integrally joined flange portion (11) and a push portion (12), the push portion (12) being located on a side surface of the flange portion (11) adjacent to the second flange (2), and the push portion (12) protruding from the surface of the flange portion (11), the push portion (12) being disposed along the root edge of the locking port (14).

4. The propeller disassembly device according to claim 3, characterized in that: The propulsion part (12) includes a first locking part (121), a connecting part (122), and a second locking part (123); the connecting part (122) is connected to the first locking part (121) and the second locking part (123) at both ends; the connecting part (122) is arc-shaped.

5. A propeller disassembly device according to claim 2, characterized in that: It also includes an adjusting block (4), which includes an integrally combined axial adjusting part (41) and a radial adjusting part (42); the radial adjusting part (42) is located on the side surface of the axial adjusting part (41) adjacent to the second flange (2), and the radial adjusting part (42) protrudes from the surface of the axial adjusting part (41); the axial adjusting part (41) is provided with a radial secondary locking port (43); the axial adjusting part (41) is arranged along the root edge of the secondary locking port (43); the front end face of the axial adjusting part (41) is in contact with the pushing part (12); the peripheral surface of the radial adjusting part (42) is in contact with the inner surface of the root of the locking port (14); and the secondary locking port (43) coincides with the locking port (14).

6. A propeller disassembly device according to claim 5, characterized in that: The propulsion part (12) is provided with a screw hole (124); the axial adjustment part (41) is provided with a through hole (44); the fastener passes through the screw hole (124) and the through hole (44).

7. A propeller disassembly device according to claim 5, characterized in that: Both the axial adjustment part (41) and the radial adjustment part (42) are horseshoe-shaped.

8. A propeller disassembly device according to claim 1, characterized in that: The front end face of the second flange (2) has a circular recess for inserting the propeller thread section.

Images