Rudder connecting body

Abstract

The application belongs to the technical field of rudder assembly, and discloses a rudder blade connecting body which is a hollow cylindrical member, the outer circumferential surface of the cylindrical member is provided with two oppositely arranged welding units, each of the welding units comprises an annular section and a square boss enclosed by the annular section, the rudder blade outer plate is provided with a connecting hole which is in the same shape as the boss and is used for sleeving the boss, and a welding seam is formed between the hole wall of the connecting hole and the side vertical surface of the boss. The vertical step is added to the existing rudder blade connecting body to form a complete process boss, so that the quick and accurate positioning of the process boss and the rudder blade outer plate is realized, the welding difficulty is greatly reduced, the construction efficiency and the welding seam quality are improved, the strength of the rudder blade is ensured, the welding and polishing workload of the welding seam is effectively reduced, and the surface smoothness of the rudder blade outer plate after welding is improved.

Description

Technical Field

[0001] This invention relates to the field of ship rudder assembly technology, specifically to a rudder blade connector. Background Technology

[0002] The rudder blade connector is a crucial component connecting the rudder stock and the rudder blade. Currently, the vast majority of high-efficiency rudders use forged steel for their rudder blade connectors, such as... Figure 1-2 As shown, the rudder blade connector is welded to the rudder blade outer plate and horizontal diaphragm, and fixed to the rudder blade. The load on the rudder blade needs to be transferred to the rudder stock through the rudder blade connector. The welding quality between the rudder blade connector and the rudder blade outer plate directly affects the structural strength and safety of the entire rudder. In addition, to ensure the hydrodynamic performance of the rudder blade, the surface of the rudder blade should be as smooth as possible. The weld between the rudder blade connector and the rudder blade outer plate has a great influence on the smoothness of the rudder blade surface and needs to be ground.

[0003] Currently, when welding the rudder blade connector to the rudder blade outer plate, the rudder blade connector has a horizontal step that mates with the opening on the rudder blade outer plate (e.g., ...). Figure 3 As shown), this reduces the difficulty of welding the horizontal weld between the rudder blade connector and the rudder blade outer plate. However, because the rudder blade connector is a cylindrical forged steel part, while the rudder blade is a curved steel plate, the positioning of the two is very difficult, and the amount of work required for welding and grinding the vertical weld is also very large (e.g. Figure 4 As shown in the figure, it is difficult to guarantee welding quality, positioning accuracy, and surface smoothness. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a rudder blade connector that enables rapid and precise positioning, effectively reduces the workload of welding and grinding, and improves the surface smoothness of the rudder blade outer plate after welding.

[0005] To achieve the above objectives, the specific technical solution adopted by the present invention is as follows:

[0006] A rudder blade connector is a hollow cylindrical component, the interior of which is used to fit a rudder stock, and the outer circumferential surface is used to weld a rudder blade outer plate. The outer circumferential surface of the cylindrical component has two welding units arranged opposite each other. Each welding unit includes an annular cross-section and a square boss enclosed by the annular cross-section. The rudder blade outer plate has a connecting hole with a shape consistent with the boss, which is fitted onto the boss. A weld is formed between the wall of the connecting hole and the side surface of the boss.

[0007] To reduce the difficulty of connecting the rudder blade connector and the rudder blade outer plate, this invention adds a vertical step to the existing rudder blade connector, forming a complete process boss. During installation, the process boss of the rudder blade connector fits into the opening (i.e., the connection hole) of the rudder blade outer plate, enabling rapid positioning. Furthermore, compared to the current rudder blade connectors that only have horizontal steps, this invention forms a weld seam, similar to a butt weld, between the boss and the rudder blade outer plate on all four sides, significantly reducing welding difficulty. In addition, the increased filling area of ​​the boss in the opening further reduces the area that needs to be filled by welding, effectively reducing welding and grinding workload and improving the surface smoothness of the rudder blade outer plate after welding.

[0008] Preferably, the bottom edge of the side face of the boss abuts against the bottom edge of the hole wall of the connecting hole, so as to connect the rudder blade connector to the rudder blade outer plate more quickly and accurately.

[0009] Preferably, the size of the weld increases from the inside to the outside to further reduce welding difficulty. This can be achieved by tilting at least one of the following: the wall of the connecting hole and the side surface of the boss. When the side surface of the boss is perpendicular to the annular cross-section, the wall of the connecting hole is tilted; when the side surface of the boss is tilted, the wall of the connecting hole is tilted or perpendicular to the surface of the outer plate of the rudder blade.

[0010] Preferably, the apex of the boss is on the same arc surface as the outer surface of the rudder blade outer plate. The matching shape of the boss and the rudder blade outer plate improves the polishing effect, ensuring the smoothness and aesthetics of the rudder blade outer plate surface after polishing. It is important to emphasize that, compared to current rudder blade connectors with only horizontal steps, this invention adds a vertical step, resulting in a smaller required opening area in the rudder blade outer plate for the position of the boss apex corresponding to the curved surface of the rudder blade outer plate. This reduces the welding and polishing area, shortens the distance between polishing reference points, significantly reduces the difficulty of welding and polishing, and ensures a smooth surface on the rudder blade outer plate after welding.

[0011] Preferably, the annular cross-section includes two horizontal cross-sections (top and bottom) and two vertical cross-sections (left and right), and the horizontal and / or vertical cross-sections conform to the contours of the outer plate of the rudder blade after docking. The stability of the docking structure is further improved by using at least one of the horizontal and vertical cross-sections to conform to each other.

[0012] Preferably, the cylindrical component is a cylindrical structure. Currently, the most common shape for rudder blade connectors is cylindrical, but this invention includes, but is not limited to, this shape. It can also be other cylindrical structures that have the docking structure of this invention and meet the requirements for rudder stick and rudder blade connection.

[0013] The present invention has the following beneficial effects:

[0014] 1. A vertical step is added to the rudder blade connector to form a complete process boss that fits with the opening on the outer plate of the rudder blade, reducing the difficulty of docking and positioning, thereby greatly reducing the welding difficulty, improving construction efficiency and weld quality, and ensuring the strength of the rudder blade.

[0015] 2. The protrusion effectively reduces the amount of welding and grinding work for vertical welds, ensuring a smooth surface on the outer plate of the rudder blade after welding.

[0016] 3. The rudder blade connector of the present invention has a simple structure and low cost. By making simple modifications to the existing rudder blade connector, the welding quality, positioning accuracy and surface smoothness can be ensured, and the technical effect is significant. Attached Figure Description

[0017] Figure 1 : Installation diagram of the existing rudder blade connector.

[0018] Figure 2 : Installation cross-sectional view of the existing rudder blade connector.

[0019] Figure 3 : A schematic diagram of the connection between the existing rudder blade connector and the rudder blade outer plate.

[0020] Figure 4 : Figure 2 Enlarged diagram of point A in the middle.

[0021] Figure 5 : Installation cross-sectional view of the rudder blade connector described in Example 1.

[0022] Figure 6 Example 1: A schematic diagram of the docking between the rudder blade connector and the rudder blade outer plate.

[0023] Figure 7 : Figure 5 Enlarged diagram of point B in the middle.

[0024] Figure 8 Example 2: Installation cross-sectional view of the rudder blade connector.

[0025] Figure 1-4 In the middle: Ⅰ-rudder blade connector, Ⅱ-horizontal step, Ⅲ-rudder blade outer plate, Ⅳ-vertical slab.

[0026] Figure 6-8 In the middle: 1-column component, 2-weld, 3-rudder blade outer plate, 4-vertical partition; 11-annular section, 12-boob, 31-connecting hole; 121-side elevation, 311-hole wall. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] A rudder blade connector, such as Figure 5-6 As shown, a hollow cylindrical component 1, with a cylindrical structure, is used to fit the rudder stock inside, and the outer circumference is used to weld the rudder blade outer plate 3. The outer circumference of the cylindrical component 1 has two welding units arranged opposite each other. The welding unit includes an annular cross-section 11 and a square boss 12 enclosed by the annular cross-section 11. The rudder blade outer plate 3 has a connecting hole 31 with the same shape as the boss 12, which is fitted onto the boss 12. A weld 2 is formed between the hole wall 311 of the connecting hole 31 and the side face 121 of the boss 12.

[0030] More specifically, such as Figure 7 As shown, the side face 121 of the boss 12 is perpendicular to the annular cross-section 11, and the hole wall 311 of the connecting hole 31 is inclined, so that the size of the weld 2 increases from the inside to the outside; the bottom edge of the side face 121 of the boss 12 abuts against the bottom edge of the hole wall 311 of the connecting hole 31; the vertex of the boss 12 is on the same arc surface as the outer surface of the rudder blade outer plate 3; the annular cross-section 11 is composed of two horizontal cross-sections and two vertical cross-sections, and the horizontal and vertical cross-sections are matched with the contour of the rudder blade outer plate 3 after docking. Figure 7 In the middle, the black area represents the welding and grinding area, and... Figure 4 In comparison, this area is significantly smaller.

[0031] Example 2

[0032] A rudder blade connector, with the same basic structure as Embodiment 1, differs only in that: in this embodiment, as Figure 8 As shown, the side face 121 of the boss 12 is inclined, and the hole wall 311 of the connecting hole 31 is perpendicular to the plate surface of the rudder blade outer plate 3.

[0033] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. Any changes made by those skilled in the art after reading the specification of the present invention, as long as they are within the scope of the claims of the present invention, will be protected by patent law.

Claims

1. A rudder blade connector, characterized in that: It is a hollow cylindrical component (1), the inside of which is used to fit the rudder stock, and the outer circumference is used to weld the outer plate of the rudder blade (3). The outer peripheral surface of the columnar member (1) has two welding units arranged opposite to each other. The welding unit includes an annular cut surface (11) and a square boss (12) enclosed by the annular cut surface (11). The outer plate of the rudder blade (3) has a connecting hole (31) with the same shape as the boss (12) for fitting it onto the boss (12). A weld (2) is formed between the hole wall (311) of the connecting hole (31) and the side face (121) of the boss (12). The bottom edge of the side face (121) of the boss (12) abuts against the bottom edge of the hole wall (311) of the connecting hole (31).

2. The rudder blade connector according to claim 1, characterized in that: The size of the weld (2) increases from the inside to the outside.

3. The rudder blade connector according to claim 2, characterized in that: The side face (121) of the boss (12) is perpendicular to the annular cross-section (11), and the wall (311) of the connecting hole (31) is inclined.

4. The rudder blade connector according to claim 2, characterized in that: The side face (121) of the boss (12) is inclined, and the hole wall (311) of the connecting hole (31) is inclined or perpendicular to the plate surface of the outer plate (3) of the rudder blade.

5. The rudder blade connector according to claim 1, characterized in that: The vertex of the boss (12) is on the same arc surface as the outer surface of the rudder blade outer plate (3).

6. The rudder blade connector according to claim 1, characterized in that: The annular cross section (11) includes two horizontal cross sections at the top and bottom and two vertical cross sections at the left and right. The horizontal cross sections and / or vertical cross sections fit the contour of the outer plate of the rudder blade (3) after docking.

7. The rudder blade connector according to claim 1, characterized in that: The columnar component (1) is a cylindrical structure.

Images