Composite tail column structure
By adopting composite structures in the ship's tail columns and using the combination of marine composite materials and cast steel parts, the difficulty and accuracy of the existing tail column structures in processing and manufacturing are solved, and efficient manufacturing and optimization of tail column lines are achieved. reduces cost and labor hours.
Patent Information
- Application Number
- CN202411565553.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2024-12-17
AI Technical Summary
During the processing and manufacturing process, the existing ship tail column structure has problems such as small space, inconvenient construction, high steel plate thickness requirements, long processing time and large accuracy errors. The cast steel tail hub is complex and prone to defects, resulting in high costs.
Adopting a composite tail column structure, the thruster column consists of external marine composite material components and internal support frames, and the tail hub consists of external composite material components and internal cast steel parts. It is fixed with adhesive and bolts, using precision machine tools and 3D Printing achieves high-precision control, and external composite components can be separated and replaced.
It reduces processing difficulty and working hours, improves manufacturing accuracy and propulsion efficiency, reduces defect occurrence and cost, and can optimize the tail column line type according to actual navigation conditions.
Smart Images
Figure CN119142450A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of ships, and in particular to a composite stern column structure. Background Art
[0002] The stern post of a ship refers to the structure located in front of the propeller and connected to the main hull. It is mainly composed of the thruster column and its stern hub on the thruster column. Ship specifications require that the thruster column have a certain rigidity, which is more specifically reflected in the minimum requirements for the cross-sectional length and cross-sectional thickness of the thruster column.
[0003] like Figure 1 , Figure 2 , Figure 3 As shown in FIG. 1 , the existing ship stern column is composed of a propeller column 31 formed by welding steel plates and a cast steel stern hub 32 firmly welded thereto. The propeller column 31 includes a hull plate 33 and an internal frame 34 for supporting the hull plate. Figure 3 As shown, the internal construction area 35 of the thruster column has a narrow space and is inconvenient to construct.
[0004] The thickness of the propeller column steel plate is relatively thick according to the specification requirements. The longer the ship is, the thicker the steel plate of the hull plate 33 is. For example, a 250-meter ship requires a steel plate thickness of no less than 40 mm. The tail column line usually has a two-way curvature, that is, the outer contour formed by the hull plate 33 needs to have a two-way curvature, and the hull plate 33 must be processed; processing the thick plate of the hull plate 33 requires pyrotechnics and cold pressing processes to achieve the required curvature, which takes a long time to process and has a large precision error.
[0005] The cast steel tail hub 32 is cast in a foundry, and a complex mold needs to be manufactured in advance according to the tail column line shape and the internal skeleton. The manufacturing period is long, and once a defect occurs, the entire casting is scrapped, resulting in a large cost loss. Summary of the invention
[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a composite tail column structure.
[0007] The present invention solves the above technical problems through the following technical solutions:
[0008] A composite stern column structure comprises a thruster column and a stern hub connected to the thruster column; the thruster column comprises a stern column internal support frame, and the stern hub comprises a shaft hub; the thruster column also comprises a first marine composite material component as a thruster column outer shell; the first marine composite material component is fixed to the outside of the stern column internal support frame; the stern hub also comprises a second marine composite material component as a stern hub outer shell; the second marine composite material component is sleeved on the shaft hub; the second marine composite material component is fixed to the outside of the shaft hub; the shaft hub is fixed to the stern column internal support frame; the stern column internal support frame is fixed to the hull plate.
[0009] Furthermore, the materials of the first ship composite material component and the second ship composite material component are both ship composite materials; the material of the stern column internal support frame is steel, and the material of the shaft hub is cast steel.
[0010] Furthermore, the first ship composite material component is composed of a plurality of first ship composite material sub-components, and the plurality of first ship composite material sub-components are respectively fixed to the internal support frame of the stern column.
[0011] Furthermore, the second ship composite material component is composed of a plurality of second ship composite material sub-components, and the plurality of second ship composite material sub-components are respectively fixed to the shaft hub.
[0012] Furthermore, the first marine composite material component is fixed to the internal support frame of the stern column by adhesive and bolts.
[0013] Furthermore, the second marine composite material component and the shaft hub are fixedly connected by adhesive and bolts.
[0014] Furthermore, the first marine composite material component is a 3D printed component.
[0015] Furthermore, the first ship composite material component is a composite material component formed by lathe processing.
[0016] Furthermore, the second marine composite material component is a 3D printed component.
[0017] Furthermore, the second ship composite material component is a composite material component formed by lathe processing.
[0018] The beneficial effects of the present invention are as follows: the composite stern column structure of the present invention, the propeller column part adopts the form of an external marine composite material component plus an internal support component; the internal support component is firmly welded to the front half of the propeller column; the outer contour line type is reflected on the outer surface of the marine composite material component, reducing the difficulty of processing; the outer contour of the marine composite material can be controlled with high precision by precision machine tools, 3D printing, etc., the outer contour manufacturing precision is high, and various complex line types can be accurately realized according to the hydrodynamic requirements to improve the propulsion efficiency; the marine composite material component can be split into multiple parts, fixed to the internal support component by adhesives and bolts, which is easy to replace, and the stern column line type can be optimized according to the actual navigation conditions. The composite stern column structure of the present invention, the tail hub part adopts the form of an external marine composite material component plus an internal steel casting; the external line type is controlled with high precision by precision machine tools, 3D printing, etc., which is convenient to manufacture, reduces the processing time, and is not prone to defects. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The figure is a side view of a tail pillar of the prior art.
[0020] Figure 2 for Figure 1 Schematic diagram of the CC section.
[0021] Figure 3 for Figure 1 Schematic diagram of the DD section.
[0022] Figure 4 It is a side view of a preferred embodiment of the present invention.
[0023] Figure 5 for Figure 4 Schematic diagram of the AA section.
[0024] Figure 6 for Figure 4 Schematic diagram of the BB section. DETAILED DESCRIPTION
[0025] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.
[0026] like Figure 4 , Figure 5 and Figure 6 As shown, a composite tail column structure includes a thruster column 10 and a tail hub 20 connected to the thruster column.
[0027] The thruster column 10 comprises a stern column internal support frame 11, and the thruster column 10 also comprises a first marine composite material component 12 as a thruster column outer shell; the first marine composite material component is fixed to the outside of the stern column internal support frame.
[0028] The tail hub 20 includes a shaft hub 21 ; the tail hub 20 also includes a second ship composite material component 22 as a tail hub shell; the second ship composite material component 22 is sleeved on the shaft hub 21 ; the second ship composite material component 22 is fixed to the outside of the shaft hub 21 .
[0029] The hub 21 is fixed to the internal support frame 11 of the stern column; the internal support frame 11 of the stern column is fixed to the hull plate 13.
[0030] The materials of the first ship composite material component 12 and the second ship composite material component 22 are both ship composite materials; the material of the stern column internal support frame 11 is steel, and the material of the shaft hub 21 is cast steel.
[0031] The first ship composite material component 12 is composed of a plurality of first ship composite material sub-components, and the plurality of first ship composite material sub-components are respectively fixed to the stern column internal support frame 11 .
[0032] The second ship composite material component 22 is composed of a plurality of second ship composite material sub-components, and the plurality of second ship composite material sub-components are respectively fixed to the hub 21 .
[0033] The first ship composite material component 12 is fixed to the stern column internal support frame 11 by adhesive and bolts.
[0034] The second marine composite material component 22 is fixed to the hub 21 by adhesive and bolts.
[0035] In other embodiments, the first ship composite material component and the internal support frame of the stern column, and the second ship composite material component and the shaft hub may also be connected by riveting or other means.
[0036] The first ship composite material component 12 is a 3D printed component. The first ship composite material component can be made by 3D printing.
[0037] In other embodiments, the first ship composite material component is a composite material component formed by lathe processing. The first ship composite material component can be processed by a precision machine tool.
[0038] The second ship composite material component 22 is a 3D printed component. The second ship composite material component can be made by 3D printing.
[0039] In other embodiments, the second ship composite material component is a composite material component formed by lathe processing. The second ship composite material component can be processed by a precision machine tool.
[0040] The outer contours of the first marine composite material component and the second marine composite material component can be controlled with high precision by precision machine tools, 3D printing, etc., and can accurately realize various complex line shapes (such as asymmetric line shapes) according to hydrodynamic requirements. Small appendages such as vortex-eliminating fins can also be added to improve propulsion efficiency.
[0041] The composite stern column structure of the present invention adopts the form of an external marine composite material plus an internal supporting member; the marine composite material member can be split into multiple parts, which are fixed to the internal supporting member by adhesives and bolts, are easy to install and replace, and the stern column line shape can be optimized according to actual navigation conditions.
[0042] Compared with the traditional tail column, the present invention has more advantages.
[0043] The traditional stern column is a complete steel structure. Due to the narrowing of the ship end line, the internal space of the stern column is small, making construction inconvenient. At the same time, the thickness of the hull plate is relatively thick according to the specifications, and the outer contour line is difficult to process. The design line required here usually has a two-way curvature, and the processing technology such as pyrotechnics and cold pressing takes a long time and has large precision errors.
[0044] In the composite stern column structure of the present invention, the thruster column part adopts the form of an external marine composite material component plus an internal support component; the internal support component is firmly welded to the front half of the thruster column; the outer contour line type is reflected on the outer surface of the marine composite material component, reducing the difficulty of processing; the outer contour of the marine composite material can be controlled with high precision by precision machine tools, 3D printing, etc., and the outer contour manufacturing accuracy is high, and various complex line types can be accurately realized according to hydrodynamic requirements, thereby improving propulsion efficiency; the marine composite material component can be split into multiple parts, fixed to the internal support component by adhesives and bolts, which is easy to replace, and the stern column line type can be optimized according to actual navigation conditions.
[0045] The composite stern pillar structure of the present invention has a stern hub part that is in the form of an external marine composite material component plus an internal steel casting; the external line shape is controlled with high precision by precision machine tools, 3D printing, etc., which is convenient to manufacture, reduces processing time, and is not prone to defects.
[0046] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.
Claims
1. A composite tail column structure, comprising a propeller column and a tail hub connected to the propeller column; the propeller column comprises an internal support frame of the tail column, and the tail hub comprises an axle hub; characterized in that: The thruster column also includes a first marine composite material component as the outer shell of the thruster column; the first marine composite material component is fixed to the outside of the internal support frame of the stern column; the stern hub also includes a second marine composite material component as the outer shell of the stern hub; the second marine composite material component is sleeved on the shaft hub; the second marine composite material component is fixed to the outside of the shaft hub; the shaft hub is fixed to the internal support frame of the stern column; the internal support frame of the stern column is fixed to the hull plate.
2. The composite tail pillar structure according to claim 1, characterized in that: The first ship composite material component and the second ship composite material component are both made of ship composite materials; the internal support frame of the stern column is made of steel, and the hub is made of cast steel.
3. The composite tail pillar structure according to claim 1, characterized in that: The first ship composite material component is composed of a plurality of first ship composite material sub-components, and the plurality of first ship composite material sub-components are respectively fixed to the internal support frame of the stern column.
4. The composite tail pillar structure according to claim 1, characterized in that: The second ship composite material component is composed of a plurality of second ship composite material sub-components, and the plurality of second ship composite material sub-components are respectively fixed to the shaft hub.
5. The composite tail pillar structure according to claim 1, characterized in that: The first ship composite material component is fixed to the internal support frame of the stern column by adhesive and bolts.
6. The composite tail pillar structure according to claim 1, characterized in that: The second marine composite material component is fixed to the shaft hub by adhesive and bolts.
7. The composite tail pillar structure according to claim 1, characterized in that: The first marine composite component is a 3D printed component.
8. The composite tail pillar structure according to claim 1, characterized in that: The first ship composite material component is a composite material component formed by lathe processing.
9. The composite tail pillar structure according to claim 1, characterized in that: The second marine composite material component is a 3D printed component.
10. The composite tail pillar structure according to claim 1, characterized in that: The second ship composite material component is a composite material component formed by lathe processing.