A method for lofting a double-sided derived flow plate and a ship thereof

Abstract

The application provides a double-side derived flow plate lofting method and a ship thereof. The double-side derived flow plate lofting method comprises the following steps: dividing a circular projection of a cylinder into several equal parts along an axis system with an inclination angle on a side view of a double-side derived flow plate, and intersecting a plurality of first-type intersection points on the axis system; designing a chamfer angle according to a fixed point; obtaining a second-type intersection point on a section view according to the fixed point and the chamfer; obtaining a cylinder development drawing according to the first-type intersection points and the second-type intersection points; adjusting a plurality of the first-type intersection points except the fixed point to make a curve smooth; and obtaining a lofted connection flow plate plate according to the adjusted first-type intersection points and the fixed point. Through cooperation of the side view and the section view, intersection points under the axis system are controlled, then lofting is realized to obtain a lofted manufacturing plate, and a technical problem that a double-side derived flow plate lofting method is lacked in the prior art is solved.

Description

Technical fields: This invention relates to the field of shipbuilding, and in particular to a method for laying out double-sided pusher plates and the ship thereof. Background technology: Side thrusters are special devices installed below the waterline at the bow or stern to improve a vessel's maneuverability and maintain precise position. They are frequently used on engineering vessels, ferries, and other similar vessels. Side thrusters typically consist of cylinders connected to the hull by deflectors and baffles, and have numerous thrust points, often designed in a double-side thrust configuration. Figure 1 Both cylinders are connected by a ring of guide vanes, which are connected to the hull hull and the central guide vane, respectively. Smooth connections are required at every point, which is very challenging. Due to the lack of a suitable lofting method, this area often suffers from inaccurate modeling and insufficient unfolding precision, affecting aesthetics and work efficiency.

[0001] There is an urgent need for a method for laying out double-sided pusher plates, which would help address the technical problem of the lack of a method for laying out double-sided pusher plates in the existing technology. Summary of the Invention: In one embodiment, the present invention provides a method for laying out a double-sided pusher plate. By combining side views and cross-sectional views, the intersection point of the control under the axis is established, and then the laying out is realized to obtain the plate material after the laying out. This helps to solve the technical problem of the lack of a double-sided pusher plate laying out method in the prior art.

[0002] The double-sided guide vane placement method includes: In the side view of the double-sided pusher plate, the circular projection of the cylinder is divided into several equal parts along an axis system with an inclination angle, and multiple first-type intersection points are formed on the axis system, wherein several of the multiple first-type intersection points are fixed points. Design the chamfer angle based on the fixed point; According to the second type of intersection of the fixed point and the chamfer on the cross-sectional view, wherein the second type of intersection intersects with the outer hull line of the cross-section ship; The cylindrical unfolded diagram is obtained based on the first type of intersection and the second type of intersection; Adjust multiple first-type intersection points, excluding the fixed points, to smooth the curve; The layout of the connecting guide plate material is obtained based on the adjusted first type of intersection and the fixed point.

[0003] In one embodiment, after the step of adjusting a plurality of first-type intersection points other than the fixed point to smooth the curve, the method further includes: Refine the interval points and readjust the smoothness.

[0004] In one embodiment, the double-sided guide vane layout includes a first guide vane and a second guide vane, as well as a third guide vane and a fourth guide vane; The first guide plate connects the outer plate and the second guide plate; The second guide plate connects to the first guide plate, the third guide plate, and the first side-push cylinder; The fourth guide plate connects to the outer plate and the second side push cylinder, as well as the third guide plate.

[0005] In one embodiment, the fixed points are four orthogonal intersection points.

[0006] In one embodiment, the circular projection is divided into 12 equal parts.

[0007] In one embodiment, each dividing point is divided into 3 equal parts.

[0008] In one embodiment, the first guide plate and the third guide plate are fitted according to the outer plate.

[0009] In one embodiment, the length of the chamfer is adjusted to adjust the width of the second guide plate material.

[0010] In one embodiment, the method is applied to the layout of a ship's dual thrusters.

[0011] In one embodiment, the present invention also provides a vessel with dual-sided thrust vanes, the vessel including the dual-sided thrust vanes. Attached image description: Figure 1 This is a schematic diagram of the structure of the double-sided propulsion guide plate on the hull in one embodiment of the present invention; Figure 2 This is a side view schematic diagram of CAD in another embodiment of the present invention; Figure 3 This is a top view schematic diagram of CAD in another embodiment of the present invention; Figure 4 This is a schematic diagram of the YY cross-section in another embodiment of the present invention; Figure 5 This is a schematic diagram of the CC section in another embodiment of the present invention; Figure 6 This is a schematic diagram of the cylinder unfolding in another embodiment of the present invention; Figure 7 This is a cross-sectional schematic diagram of another embodiment of the present invention; Figure 8 This is a schematic diagram of the second guide plate unfolding in another embodiment of the present invention; Figure 9 This is a schematic diagram of the cross-section of different rib numbers at the first type of intersection in another embodiment of the present invention; Figure 10This is a schematic diagram of the first guide plate structure in another embodiment of the present invention; Figure 11 This is a schematic diagram of the third guide plate structure in another embodiment of the present invention. Specific implementation examples: To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0014] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0015] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0016] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0017] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0018] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0019] To improve work efficiency, enhance accuracy, and ensure aesthetics, this invention provides a method for laying out a double-sided concave guide plate. This method achieves a more accurate unfolded pattern by smoothly connecting the guide plate to the cylinder, thus improving unfolding accuracy and ensuring aesthetics.

[0020] Figure 1 This is a schematic diagram of the structure of the double-sided propulsion guide plate on the hull in one embodiment of the present invention; Figure 2 This is a side view schematic diagram of CAD in another embodiment of the present invention; Figure 3This is a top view schematic diagram of CAD in another embodiment of the present invention; Figure 4 This is a schematic diagram of the YY cross-section in another embodiment of the present invention; Figure 5 This is a schematic diagram of the CC section in another embodiment of the present invention; Figure 6 This is a schematic diagram of the cylinder unfolding in another embodiment of the present invention; Figure 7 This is a cross-sectional schematic diagram of another embodiment of the present invention; Figure 8 This is a schematic diagram of the second guide plate unfolding in another embodiment of the present invention; Figure 9 This is a schematic diagram of the cross-section of different rib numbers at the first type of intersection in another embodiment of the present invention; Figure 10 This is a schematic diagram of the first guide plate structure in another embodiment of the present invention; Figure 11 This is a schematic diagram of the third guide plate structure in another embodiment of the present invention.

[0021] like Figures 1 to 11 As shown, in one embodiment, the present invention provides a method for laying out a double-sided pusher plate, the method comprising: S101, on the side view of the double-sided pusher plate, the circular projection of the cylinder is divided into several equal parts along an axis system with an inclination angle, and multiple first-type intersection points are formed on the axis system, wherein several of the multiple first-type intersection points are fixed points.

[0022] The first and second guide vanes, as well as the third and fourth guide vanes, respectively correspond to Figure 2 In section 1#, 2#, 3#, and 4#, the main task in this step is to determine the fixed point and the first type of intersection. It should be noted that the shaft system in this step has an inclination angle, such as... Figure 2 As shown, the orthogonal directions of the axis system will form four intersection points A, B, C, and D with the second guide plate. This axis system needs to be divided into 12 equal parts. Of course, the number of fixed points and equal parts can be determined according to the accuracy requirements. The subsequent layout method for the fourth guide plate is the same. Because it is a double-push structure, there are two cylindrical structures, each in... Figure 2 In the side view, the inner circle is circular.

[0023] S102, Design the chamfer angle according to the fixed point.

[0024] Once the four fixed points are determined, the chamfer is as follows: Figure 4 and Figure 5 As shown, you can manually select the angle, for example, 30 degrees for the top and 45 degrees for the bottom. However, apart from the four fixed points, the chamfer will have errors at other points. We will correct these errors in subsequent steps.

[0025] S103, a second type of intersection point is obtained on the cross-sectional view based on the fixed point and the chamfer, wherein the second type of intersection point is the intersection point of the chamfer and the outer plate ship line of the cross-sectional view.

[0026] S104, Obtain the cylindrical unfolded diagram based on the first type of intersection and the second type of intersection.

[0027] like Figure 6 As shown, the intersection line between the cylindrical boundary and the hull plate is shown. Points 1 to 12 from top to bottom are the first type of intersection points. Points 1, 4, 7, and 10 are fixed points, and the rest are auxiliary points.

[0028] S105, adjust multiple first-type intersection points other than the fixed point to smooth the curve.

[0029] Adjust the auxiliary points to make the curve smoother. Figure 7 To adjust the comparison status before and after the modification.

[0030] S106, the layout of the connecting guide plate material is obtained based on the adjusted first type of intersection and the fixed point.

[0031] In one embodiment, after the step of adjusting a plurality of first-type intersection points other than the fixed point to smooth the curve, the method further includes: Refine the interval points and readjust the smoothness.

[0032] In one embodiment, the double-sided guide vane layout includes a first guide vane and a second guide vane, as well as a third guide vane and a fourth guide vane; The first guide plate connects the outer plate and the second guide plate; The second guide plate connects to the first guide plate, the third guide plate, and the first side-push cylinder; The fourth guide plate connects to the outer plate and the second side push cylinder, as well as the third guide plate.

[0033] In one embodiment, the fixed points are four orthogonal intersection points.

[0034] In one embodiment, the circular projection is divided into 12 equal parts.

[0035] In one embodiment, each dividing point is divided into 3 equal parts.

[0036] In one embodiment, the first guide plate and the third guide plate are fitted according to the outer plate.

[0037] In one embodiment, the length of the chamfer is adjusted to adjust the width of the second guide plate material.

[0038] In one embodiment, the method is applied to the layout of a ship's dual thrusters.

[0039] In one embodiment, the present invention also provides a vessel with dual-sided thrust vanes, the vessel including the dual-sided thrust vanes.

[0040] Based on the above method, the overall process can be represented as follows: Analysis of difficulties: As shown in the figure, in the side view, there are four main air deflectors: the first air deflector, the second air deflector, the third air deflector, and the fourth air deflector, which correspond to... Figure 2 The plan includes sections 1, 2, 3, and 4. Points A and C are the two ends of section 2, connecting to sections 1 and 3 at the bow and stern respectively. Points B and D connect to the hull plating. These four points (A, B, C, and D) must be smoothly connected to form section 2. Point E connects to section 3, and points F, G, and H connect to the hull plating. These four points (E, F, G, and H) must also be smoothly connected to form section 4. The top and bottom of section 3 connect to the hull plating and also to sections 2 and 4. These four sections, besides meeting the angle and dimensional requirements given by the design institute, must also be smooth and aesthetically pleasing, which increases the difficulty of the layout.

[0041] To achieve the above objectives, the present invention provides a method for laying out a double-sided concave guide plate, comprising the following steps: 1. First, create a side view based on the known data, then create the XX and YY cross-sectional views. This also yields the four intersection points (1, 4, 7, 10) between the #2 guide vane and the cylinder, and the four outer opening points (A, B, C, D) of the #2 guide vane. Project these four points (A, B, C, D) onto the side view, and first perform a rough smoothing (see...). Figure 2 )).

[0042] 2. Unfold the cylinder, using points 1, 4, 7, and 10 as references, and perform a rough smoothing to obtain the rough unfolded pattern of the cylinder. Simultaneously, project the half-widths of points ABCD onto the unfolded cylinder drawing to obtain the projection of the cylinder's outer opening line, and perform a rough smoothing as well. This finalizes points 1, 4, 7, 10, and ABCD, and they will not be modified later. However, the smoothing of other points may not be perfect, and they need to be checked and modified during the layout process.

[0043] 3. Divide the cylinder into 12 equal parts on the side view and create cross-sectional views of each dividing line. Divide the cylinder circumference into 12 equal parts on the cylinder development view. Taking section 2-8 as an example, on the cylinder development view, take half the width (27°30°) from the dividing line to the outer opening of the cylinder, which is equal to the half width (27°30°) at the corresponding position on section 2-8. Then, using this point as a reference, draw an angle (e.g., ...). Figure 1The angle at the top of section BB is 30 degrees, and the angle at four points on section XX is 37.5 degrees. Dividing this angle equally, the angle at point 2 is 32.5 degrees. Intersect this angle line with the corresponding position on the side view (parallel cylinder line 110 in the figure). Observe this intersection point; if it's outside the outer plate line, it doesn't meet the design requirements (it should be inside the outer plate line and not intersecting with it). Reduce the half-width of the inner cylinder line and the outer opening line of the guide plate at this point (modified to 2695), projecting it onto the cylinder development view while keeping all lines smooth. Then project the modified half-width of the outer opening line of guide plate #2 (figure 2867) onto the cylinder development view, observing if the line is smooth. If not, modify it until it is smooth. The same applies to other section positions; as long as it meets the design requirements, it's acceptable. Draw curves ABCD on three surfaces, observing if they are smooth. If not, adjust and modify until all three surfaces are smooth. The layout process for EFGH near the top is similar.

[0044] 4. Divide the cylinder into 36 equal parts on the side view and into 36 equal parts on the unfolded view of the cylinder. Based on these two views, the coordinate values ​​(X, Y, Z) of each dividing line, the outer opening line of the cylinder, and the outer opening line of the #2 guide vane can be obtained. Import these coordinate values ​​into the modeling system to complete the modeling and unfolding of the cylinder and the guide vane. The same applies to the #4 guide vane.

[0045] 5. Curve DAB is the intersection line of guide vane #1 and guide vane #2. Use DAB as a boundary line for guide vane #1, and take straight line OA as the tangent (this ensures that OA is the maximum concave point of guide vane #1). Then, smooth the profile of guide vane #1. BCD is the intersection line of guide vane #2 and guide vane #3. HEF is the intersection line of guide vane #3 and guide vane #4. Smooth guide vane #3. Smoothing of guide vane #1 and #3 can be done directly in the smoothing system using standard smoothing techniques. After smoothing guide vane #1 and #3 respectively, import them into the modeling system for modeling, unfolding, and proceeding to the next stage of work.

[0046] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A method for laying out double-sided pusher plates, characterized in that, The double-sided guide vane placement method includes: In the side view of the double-sided pusher plate, the circular projection of the cylinder is divided into several equal parts along an axis system with an inclination angle, and multiple first-type intersection points are formed on the axis system, wherein several of the multiple first-type intersection points are fixed points. Design the chamfer angle based on the fixed point; The second type of intersection point is obtained on the cross-sectional view based on the fixed point and the chamfer, wherein the second type of intersection point is the intersection point of the chamfer and the ship line of the outer plate of the cross-sectional view; The cylindrical unfolded diagram is obtained based on the first type of intersection and the second type of intersection; Adjust multiple first-type intersection points, excluding the fixed points, to smooth the curve; The layout of the connecting guide plate material is obtained based on the adjusted first type of intersection and the fixed point.

2. The double-sided guide vane layout method according to claim 1, characterized in that, After adjusting multiple first-type intersection points other than the fixed point to smooth the curve, the method further includes: Refine the interval points and readjust the smoothness.

3. The double-sided pusher plate layout method according to claim 2, characterized in that, The double-sided guide plate layout includes a first guide plate and a second guide plate, as well as a third guide plate and a fourth guide plate; The first guide plate connects the outer plate and the second guide plate; The second guide plate connects to the first guide plate, the third guide plate, and the first side-push cylinder; The fourth guide plate connects to the outer plate and the second side push cylinder, as well as the third guide plate.

4. The double-sided guide vane layout method according to claim 3, characterized in that, The fixed points are four orthogonal intersection points.

5. The double-sided pusher plate layout method according to claim 4, characterized in that, Divide the circular projection into 12 equal parts.

6. The double-sided pusher plate layout method according to claim 5, characterized in that, Each dividing point is a 3-part division.

7. The double-sided pusher plate layout method according to claim 6, characterized in that, The first guide plate and the third guide plate are fitted according to the outer plate.

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