Cabin bilge well structure comprehensively considering tail shaft drawing
By designing the cabin sewage well structure, the problem of flange collision during tail shaft extraction is solved, the continuity and stiffness of the inner bottom plate of the cabin is maintained, and the tail shaft is successfully extracted and maintained safely.
Patent Information
- Application Number
- CN202422235793.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In the prior art, the problem of not being able to be extracted due to flange collision during the tail shaft extraction, and the existing solutions lead to discontinuous structure of the inner bottom plate of the engine room, affecting stiffness and maintenance safety.
A cabin sewage well structure is designed. The top of the sewage well is flush with the inner bottom plate of the cabin. The opening of the sewage well is located below the flange. The width and length are designed to meet the needs of the intermediate shaft flange placement, ensuring that the intermediate shaft flange and the tail shaft flange are staggered, and the sewage well covers the intermediate shaft flange position along the captain direction.
The smooth extraction of the tail shaft is achieved, the structural continuity and stiffness of the inner bottom plate of the engine room is maintained, convenient for maintenance operations, and the overall stiffness and safety of the structure are improved.
Smart Images
Figure CN223045907U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, in particular to a cabin sewage well structure which comprehensively considers the extraction of a tail shaft. Background Art
[0002] The intermediate shaft and the tail shaft are connected by a flange in front of the end wall of the ship's engine room. The radius of the flange is larger than that of the shaft. When the tail shaft is inspected, the intermediate shaft is placed on the bottom plate in the engine room, and then the tail shaft is pulled out. In many cases, due to the small space there, the flange on the tail shaft and the flange on the intermediate shaft cannot be misaligned on the flange plane, resulting in a collision and the tail shaft cannot be pulled out.
[0003] In order to avoid the collision between the flange on the tail shaft and the flange on the intermediate shaft, which would cause the tail shaft to be unable to be pulled out, the current common treatment method is to make the bottom plate in the cabin stepped, that is, to partially lower the bottom plate in the cabin at the flange to place the intermediate shaft, which is staggered with the tail shaft to ensure that the tail shaft can be pulled out.
[0004] This solution causes the structure of the cabin bottom plate to be discontinuous, which has an adverse effect on the stress and stiffness of the overall structure. In addition, the arrangement of such a stepped cabin bottom plate requires attention to the steps during maintenance, which is relatively inconvenient and unsafe in actual operation. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide a cabin sewage well structure which comprehensively considers the extraction of the tail shaft.
[0006] The utility model solves the above technical problems through the following technical solutions:
[0007] A cabin sewage well structure which comprehensively considers the extraction of the tail shaft, comprises a sewage well arranged in the cabin; a flange for connecting the intermediate shaft and the tail shaft is arranged in the cabin; the flange comprises a tail shaft flange connected to the tail shaft and an intermediate shaft flange connected to the intermediate shaft; the top of the sewage well is flush with the inner bottom plate of the cabin; the front end wall of the sewage well is located in front of the flange; a sewage well opening which can accommodate the intermediate shaft flange when the intermediate shaft falls on the inner bottom plate of the cabin is opened at the top of the sewage well, and the sewage well opening is located below the flange; the width of the sewage well opening along the ship width direction is greater than the diameter of the flange; the length of the sewage well opening along the ship length direction is greater than the thickness of the intermediate shaft flange.
[0008] Furthermore, the diameter of the flange is D, the diameter of the intermediate shaft is d, and the distance between the centerline of the tail shaft and the inner bottom plate of the nacelle is h2, wherein h2-D-0.5d>0.
[0009] Furthermore, the height of the sewage well is h, where h>0.5D-0.5d.
[0010] Furthermore, the minimum vertical distance between the tailshaft flange and the intermediate shaft flange required during the operation of the tailshaft is h3, where h2 - D - 0.5d > h3.
[0011] Furthermore, the length of the bilge well along the ship's length direction is L, and the distance between the aft end wall of the engine room and the front end wall of the bilge well is L.
[0012] Furthermore, the top of the bilge well and the inner bottom plate of the engine room form a structurally continuous plane.
[0013] Furthermore, the top of the bilge well and the inner bottom plate of the engine room are integrally formed.
[0014] Furthermore, the opening of the bilge well is located directly below the flange.
[0015] Furthermore, the opening of the bilge well is rectangular or waist-shaped.
[0016] Furthermore, the bilge well is arranged between the outer hull plates on both sides of the engine room.
[0017] The beneficial effects of the present utility model are as follows: When the intermediate shaft is lowered in the present utility model, the intermediate shaft flange is placed in the opening of the bilge well, which facilitates the smooth extraction of the tailshaft; by using the opening of the bilge well as the placement opening for the intermediate shaft flange, the continuity and height consistency of the inner bottom plate of the engine room are ensured, which is beneficial to the load transfer of the structure here and ensures that the inner bottom plate of the engine room has better stiffness, and can greatly improve the structural stiffness here compared with the conventional scheme. In the present utility model, the double bottom of the engine room does not need to be made into a stepped shape, which can maintain the structural continuity of the inner bottom plate of the engine room, and is also convenient for maintenance operations and ensures work safety in actual use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a side view of a preferred embodiment of the present utility model.
[0019] Figure 2 It is a top view of the bilge well of a preferred embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The following is a preferred embodiment, and the present utility model will be described more clearly and completely in conjunction with the accompanying drawings.
[0021] As Figure 1 and Figure 2 shown, a bilge well structure of the engine room that comprehensively considers the extraction and installation of the tailshaft includes a bilge well 20 arranged in the engine room 10; a flange 30 for connecting the intermediate shaft 12 and the tailshaft 11 is arranged in the engine room 10.
[0022] The flange 30 includes a tailshaft flange 31 connected to the tailshaft 11 and an intermediate shaft flange 32 connected to the intermediate shaft 12. The diameter of the tailshaft flange is equal to the diameter of the intermediate shaft flange. The diameter of the flange is equal to the diameter of the tailshaft flange and also equal to the diameter of the intermediate shaft flange.
[0023] The top of the bilge well 20 is flush with the inner bottom plate 13 of the engine room; the top of the bilge well and the inner bottom plate of the engine room form a structurally continuous plane. In a preferred embodiment, the top of the bilge well and the inner bottom plate of the engine room are integrally formed.
[0024] The front end wall 22 of the bilge well 20 is located in front of the flange 30. An opening 21 of the bilge well is provided at the top of the bilge well 20, which can accommodate the intermediate shaft flange when the intermediate shaft falls onto the inner bottom plate of the engine room.
[0025] The bilge well opening 21 is located below the flange 30; in this embodiment, the bilge well opening 21 is located directly below the flange 30.
[0026] The diameter of the flange 30 is D, the diameter of the intermediate shaft 12 is d, and the distance between the tailshaft center line 14 and the inner bottom plate 13 of the engine room is h2, where h2 - D - 0.5d > 0. In this way, after the intermediate shaft is lowered, the intermediate shaft flange on the lowered intermediate shaft and the tailshaft flange on the tailshaft can be staggered.
[0027] To ensure a better effect that the tailshaft can be smoothly withdrawn after the intermediate shaft is lowered, the minimum vertical distance h3 between the tailshaft flange 31 and the intermediate shaft flange 32 required during the operation of withdrawing the tailshaft can be set. For this purpose, in a preferred embodiment, h2 - D - 0.5d > h3.
[0028] The length of the bilge well opening 21 in the longitudinal direction of the ship is greater than the thickness of the intermediate shaft flange 32. The width of the bilge well opening 21 in the transverse direction of the ship is greater than the diameter of the flange 30. The width of the bilge well opening 21 in the transverse direction of the ship is h1, where h1 > D. The length and width of the bilge well opening meet the requirement to ensure that the intermediate shaft flange can be lowered.
[0029] The height of the bilge well 20 is h, where h > 0.5D - 0.5d. In this way, the height of the bilge well can meet the space requirement for the intermediate shaft flange to be lowered.
[0030] The length of the bilge well 20 in the longitudinal direction of the ship is L, and the distance between the aft end wall 23 of the engine room and the front end wall 22 of the bilge well is L. The length L of the bilge well in the longitudinal direction of the ship can cover the longitudinal position of the intermediate shaft flange.
[0031] The bilge well opening 21 is rectangular or waist-shaped. The bilge well is provided between the hull outer plates on both sides of the engine room.
[0032] Based on this technical solution, during the overhaul of the tailshaft, the tailshaft flange and the intermediate shaft flange are disassembled, asFigure 1 As shown, the intermediate shaft flange is placed on the inner bottom plate of the engine room together with the intermediate shaft, and the intermediate shaft flange is placed within the opening of the bilge well; since h2 - D - 0.5d > 0, after the intermediate shaft is lowered, the intermediate shaft flange and the tail shaft flange can be staggered. In this way, the tail shaft can be smoothly withdrawn for maintenance.
[0033] The utility model keeps the inner bottom plate of the engine room flat and of the same height, makes the bilge well at the tail of the engine room larger along the ship length direction, and places the intermediate shaft flange within the opening of the bilge well when the intermediate shaft is lowered, facilitating the smooth withdrawal of the tail shaft.
[0034] The utility model uses the opening of the bilge well as the placement opening for the intermediate shaft flange, ensuring the continuity and the same height of the inner bottom plate of the engine room, being beneficial to the load transfer of the structure here, ensuring better stiffness of the inner bottom plate of the engine room, and being able to greatly improve the structural stiffness here compared with the conventional scheme.
[0035] In the utility model, the double bottom of the engine room does not need to be made into a stepped form, which can maintain the structural continuity of the inner bottom plate of the engine room, and is also convenient for maintenance operations and ensures work safety in actual use.
[0036] Although the specific embodiments of the utility model have been described above, those skilled in the art should understand that this is only for illustration. The protection scope of the utility model is defined by the appended claims. Without departing from the principle and essence of the utility model, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the utility model.
Claims
1. A cabin sewage well structure that comprehensively considers the extraction of the tail shaft, comprising a sewage well arranged in the cabin; a flange for connecting the intermediate shaft and the tail shaft is arranged in the cabin; the flange comprises a tail shaft flange connected to the tail shaft and an intermediate shaft flange connected to the intermediate shaft; characterized in that: The top of the sewage well is flush with the inner bottom plate of the engine room; the front end wall of the sewage well is located in front of the flange; a sewage well opening is provided at the top of the sewage well to accommodate the flange of the intermediate shaft when the intermediate shaft falls on the inner bottom plate of the engine room, and the sewage well opening is located below the flange; The width of the sewage well opening in the ship's width direction is greater than the diameter of the flange; The length of the sewage well opening along the length of the ship is greater than the thickness of the intermediate shaft flange.
2. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 1 is characterized in that: The diameter of the flange is D, the diameter of the intermediate shaft is d, and the distance between the centerline of the tail shaft and the inner bottom plate of the cabin is h2, where h2-D-0.5d>0.
3. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 2 is characterized in that: The height of the sewage well is h, where h>0.5D-0.5d.
4. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 2 is characterized in that: The minimum vertical distance between the tail shaft flange and the intermediate shaft flange required for the tail shaft extraction operation is h3, where h2-D-0.5d>h3.
5. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 1 is characterized in that: The length of the sewage well along the length of the ship is L, and the distance between the rear end wall of the engine room and the front end wall of the sewage well is L.
6. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 1 is characterized in that: The top of the sewage well and the inner bottom plate of the cabin form a structurally continuous plane.
7. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 6 is characterized in that: The top of the sewage well and the inner bottom plate of the cabin are formed in one piece.
8. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 1 is characterized in that: The sewage well opening is located directly below the flange.
9. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 1 is characterized in that: The sewage well opening is rectangular or oval.
10. The cabin sewage well structure taking tail shaft extraction into consideration as claimed in claim 1 is characterized in that: The sewage well is located between the hull outer plates on both sides of the engine room.