Bilateral thrust guide plate lofting method and ship thereof

Abstract

The invention provides a double-side-thrust guide plate lofting method and a ship thereof.The double-side-thrust guide plate lofting method comprises the steps that on a side view of a double-side-thrust guide plate, a circular projection of a cylinder is divided into a plurality of equal parts along a shaft system with an inclination angle, and a plurality of first-class intersection points are intersected on the shaft system; the chamfering angle is designed according to the fixing point; according to a second type of intersection points of the fixed points and the chamfers on the cross-section diagram; according to the first type of intersection points and the second type of intersection points, obtaining a cylinder expansion graph; adjusting the plurality of first-class intersection points except the fixed points so as to enable the curve to be smooth; and according to the adjusted first type of intersection points and the fixed points, obtaining the lofted joined guide plate. Through cooperation of a side view and a cross-section diagram, intersection points are controlled under an established shaft system, then lofting is achieved, a manufacturing plate obtained after lofting is obtained, and the technical problem that in the prior art, lofting abandoning of the double-side-push flow guide plate is lacked is solved.

Description

Technical field:

[0001] The invention relates to the field of shipbuilding, in particular to a double-side push guide plate lofting method and a ship thereof. Background technology:

[0002] A thruster is usually a special device installed below the waterline at the bow or stern to improve the maneuverability of the ship and accurately maintain the ship's position. It is often used on engineering ships, ferries and other ships. There is a cylinder in the thruster, and the cylinder is generally connected to the outer plate of the hull with a guide plate. There are many thruster parts, and the double thruster shape is designed ( Figure 1 ), the two cylinders are connected by a circle of guide plates, which are connected to the outer plate of the hull and the middle guide plate respectively. It is very difficult to connect each position smoothly. Due to the lack of a good lofting method, this part often has the problem of inaccurate modeling and insufficient unfolding accuracy, which affects the appearance and work efficiency.

[0003] A double-side push guide plate lofting method is urgently needed to help solve the technical problem of the lack of a double-side push guide plate lofting method in the prior art. Summary of the invention:

[0004] In one embodiment, the present invention provides a double-sided push guide plate layout method, which, through the coordination of the side view and the cross-sectional view, establishes the control of the intersection under the axis system, and then implements the layout to obtain the production plate after the layout, which helps to solve the technical problem of the lack of a double-sided push guide plate layout in the prior art.

[0005] The double-side push guide plate lofting method comprises:

[0006] In the side view of the double-sided deflector, the circular projection of the cylinder is divided into a number of equal parts along the axis system with an inclination angle, and a plurality of first-type intersection points are intersected on the axis system, wherein a plurality of the first-type intersection points include a number of the fixed points;

[0007] Designing the chamfer angle according to the fixing point;

[0008] According to the second type of intersection points of the fixed point and the chamfer on the cross-section diagram, wherein the second type of intersection points intersect with the outer plate ship line of the cross-section ship;

[0009] Obtaining a cylinder expansion diagram according to the first type of intersection points and the second type of intersection points;

[0010] adjusting a plurality of the first-type intersection points other than the fixed points to make the curve smooth;

[0011] The lofted connecting guide plate is obtained according to the adjusted first-type intersection points and the fixed points.

[0012] In one embodiment, after the step of adjusting the plurality of first-type intersection points other than the fixed points to make the curve smooth, the method further comprises:

[0013] Refine the spacing points and adjust the smoothness again.

[0014] In one embodiment, the double-side push guide plate lofting includes a first guide plate and a second guide plate, and a third guide plate and a fourth guide plate;

[0015] The first guide plate connects the outer plate and the second guide plate;

[0016] The second guide plate is connected to the first guide plate, the third guide plate and the first thrust cylinder;

[0017] The fourth guide plate is connected to the outer plate and the second side thrust cylinder, as well as the third guide plate.

[0018] In one embodiment, the fixed points are four orthogonal intersection points.

[0019] In one embodiment, the circular projection is divided into 12 equal parts.

[0020] In one embodiment, each equally divided interval point is divided into three equal parts.

[0021] In one embodiment, the first guide plate and the third guide plate are fitted according to the outer plate.

[0022] In one embodiment, the length of the chamfer adjusts the width of the second guide plate.

[0023] In one embodiment, the method is applied to the lofting of double-push guide plates of a ship.

[0024] In one embodiment, the present invention further provides a ship with double-sided push deflectors, the ship comprising the double-sided push deflectors. Description of the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of the double-sided deflector on the hull in one embodiment of the present invention;

[0026] Figure 2 A schematic side view of a CAD in another embodiment of the present invention;

[0027] Figure 3 A schematic top view of a CAD in another embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the YY section in another embodiment of the present invention;

[0029] Figure 5It is a CC cross-sectional schematic diagram of another embodiment of the present invention;

[0030] Figure 6 It is a schematic diagram of a cylinder unfolding in another embodiment of the present invention;

[0031] Figure 7 It is a cross-sectional schematic diagram of another embodiment of the present invention;

[0032] Figure 8 It is a schematic diagram of the second guide plate in another embodiment of the present invention;

[0033] Fig. 9 It is a schematic cross-sectional view of the positions of different rib numbers of the first type of intersections in another embodiment of the present invention;

[0034] Fig.10 This is a schematic structural diagram of a first guide plate in another embodiment of the present invention;

[0035] Fig.11 Schematic diagram of the structure of the third guide plate in another embodiment of the present invention. Specific embodiment:

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0038] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0039] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0040] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0041] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid unnecessary or redundant details that make the present application unclear. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but are merely used as the basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0042] 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 the present application.

[0043] In order to improve work efficiency, enhance accuracy and ensure aesthetics, the present invention provides a double-side push inner concave side push guide plate layout method, the method through the smooth transition docking of the guide plate and the cylinder, to obtain a more accurate deployment sample, thus improving the deployment accuracy, ensure aesthetics.

[0044] Figure 1 This is a schematic diagram of the structure of the double-sided deflector on the hull in one embodiment of the present invention; Figure 2 A schematic side view of a CAD in another embodiment of the present invention; Figure 3 A schematic top view of a CAD in another embodiment of the present invention; Figure 4 It is a schematic diagram of the YY section in another embodiment of the present invention; Figure 5 It is a CC cross-sectional schematic diagram of another embodiment of the present invention; Figure 6 It is a schematic diagram of a cylinder unfolding in another embodiment of the present invention; Figure 7 It is a cross-sectional schematic diagram of another embodiment of the present invention; Figure 8 It is a schematic diagram of the second guide plate in another embodiment of the present invention; Fig. 9 It is a schematic cross-sectional view of the positions of different rib numbers of the first type of intersections in another embodiment of the present invention; Fig.10 This is a schematic structural diagram of a first guide plate in another embodiment of the present invention; Fig.11 Schematic diagram of the structure of the third guide plate in another embodiment of the present invention.

[0045] like Figures 1 to 11 As shown, in one embodiment, the present invention provides a double-sided deflector plate lofting method, the double-sided deflector plate lofting method comprising:

[0046] S101, dividing the circular projection of the cylinder into a number of equal parts along an axis system with an inclination angle on the side view of the double-sided guide plate, and intersecting a plurality of first-type intersection points on the axis system, wherein a plurality of the first-type intersection points include a plurality of the fixed points.

[0047] The first guide plate and the second guide plate, as well as the third guide plate and the fourth guide plate, correspond to Figure 2 In this step, the fixed point and the first type of intersection point need to be determined. It should be pointed out that the axis system has an inclination angle in this step, such as Figure 2As shown, the orthogonal direction of the axis system will form four intersections A, B, C, and D with the second guide plate. Under this axis system, it 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 lofting method of the fourth guide plate is the same. Since it is a double-push structure, there are two cylindrical structures, each of which is Figure 2 In the side view state in , the inner circle is circular.

[0048] S102, designing a chamfer angle according to the fixing point.

[0049] When the four fixed points are determined, the chamfer Figure 4 and Figure 5 As shown, you can select it manually, for example, 30 degrees at the top and 45 degrees at the bottom, but except for the four fixed points, the chamfering of other points will have errors. We will correct this error in the subsequent steps.

[0050] S103, according to the second type of intersection points of the fixed points and the chamfers on the cross-sectional view, wherein the second type of intersection points intersect with the outer plate ship lines of the cross-sectional ship.

[0051] S104: Obtain a cylinder expansion diagram according to the first type of intersection points and the second type of intersection points.

[0052] like Figure 6 As shown, it is the intersection line of the cylinder boundary and the hull outer plate. 1 to 12 from top to bottom are the first type of intersection points, among which 1, 4, 7, and 10 are fixed points, and the rest are auxiliary points.

[0053] S105: adjusting a plurality of the first-type intersection points except the fixed point to make the curve smooth.

[0054] Adjust the auxiliary points to make the curve smoother. Figure 7 To adjust the comparison status before and after modification.

[0055] S106, obtaining the connected guide plate after lofting according to the adjusted first-type intersection points and the fixed points.

[0056] In one embodiment, after the step of adjusting the plurality of first-type intersection points other than the fixed points to make the curve smooth, the method further comprises:

[0057] Refine the spacing points and adjust the smoothness again.

[0058] In one embodiment, the double-side push guide plate lofting includes a first guide plate and a second guide plate, and a third guide plate and a fourth guide plate;

[0059] The first guide plate connects the outer plate and the second guide plate;

[0060] The second guide plate is connected to the first guide plate, the third guide plate and the first thrust cylinder;

[0061] The fourth guide plate is connected to the outer plate and the second side thrust cylinder, as well as the third guide plate.

[0062] In one embodiment, the fixed points are four orthogonal intersection points.

[0063] In one embodiment, the circular projection is divided into 12 equal parts.

[0064] In one embodiment, each equally divided interval point is divided into three equal parts.

[0065] In one embodiment, the first guide plate and the third guide plate are fitted according to the outer plate.

[0066] In one embodiment, the length of the chamfer adjusts the width of the second guide plate.

[0067] In one embodiment, the method is applied to the lofting of double-push guide plates of a ship.

[0068] In one embodiment, the present invention further provides a ship with double-sided push deflectors, the ship comprising the double-sided push deflectors.

[0069] According to the above method, the overall process can be expressed as follows:

[0070] Difficulty analysis: As shown in the figure, in the side view, there are four major guide plates, namely the first guide plate, the second guide plate, the third guide plate and the fourth guide plate, corresponding to Figure 2 1#, 2#, 3#, 4#. Points A and C are the two ends of the 2# guide plate, which are connected to the 1# and 3# guide plates at the front and rear ends respectively, while points B and D are connected to the hull outer plate respectively. The four points ABCD should be smoothly connected to form the 2# guide plate. Point E should be connected to the 3# guide plate, and points F, G, and H should be connected to the outer plate. The four points E, F, G, and H should be smoothly connected to form the 4# guide plate. The upper and lower mouths of the 3# guide plate should be connected to the hull outer plate, and also to the 2# and 4# guide plates. In addition to meeting the angle and size requirements given by the design institute, these four guide plates must also be smooth and beautiful, which increases the difficulty of lofting.

[0071] In order to achieve the above-mentioned object, the present invention provides a double-side push concave guide plate lofting method, comprising the following steps:

[0072] 1. First, make a side view based on the known data, then make XX section and YY section. At the same time, we also get the four intersection points (1, 4, 7, 10) of the 2# guide plate and the cylinder and the four outer points (A, B, C, D) of the 2# guide plate. Project the four points ABCD onto the side view and make rough smoothing first (see Figure 2 )).

[0073] 2. Expand the cylinder, and make rough smoothing based on points 1, 4, 7, and 10 to obtain the rough expansion sample of the cylinder. At the same time, the half width of the four points ABCD is also projected onto the cylinder expansion drawing to obtain the projection of the outer line of the cylinder, and make rough smoothing. In this way, points 1, 4, 7, 10 and ABCD are determined and will not be changed later, but other points may not be smooth and need to be checked and modified during the lofting process.

[0074] 3. Divide the cylinder into 12 equal parts in the side view, make cross-sections of each equal-division line, and divide the circumference of the cylinder into 12 equal parts in the cylinder development view. Taking section 2-8 as an example, take the half-width (2730) from the equal-division line to the outer opening of the cylinder in the cylinder development view, which is equal to the half-width position (2730) at the corresponding position on section 2-8, and then make an angle based on this point (such as Figure 1 , the opening of the BB section is 30 degrees, and the 4 places of the XX section are 37.5 degrees. According to the equal division, the opening of 2 places is 32.5 degrees. ) Use this angle line to intersect with the corresponding position on the side view (the figure shows the parallel cylinder line 110), observe this intersection, it is outside the outer plate line, which does not meet the design requirements (it should be inside the outer plate line and not intersecting with the outer plate line), reduce the half width of the inner opening line of the cylinder and the outer opening line of the guide plate at this point, (modified to 2695) project to and make each line still smooth. Then project the modified outer opening line half width of the 2# guide plate (2867 in the figure) to the cylinder expansion view, observe whether this line is smooth, if not smooth, modify it until it is smooth, other section positions are similar, and meet the design requirements. In this way, draw the curve ABCD on three surfaces, observe whether it is smooth, if there is any unevenness, adjust and modify it until all three surfaces are smooth. The lofting process of EFGH near the head is similar.

[0075] 4. Divide the cylinder into 36 equal parts in the side view, and divide the circumference into 36 equal parts in the cylinder development diagram. Based on these two diagrams, we can obtain the coordinate values ​​(X, Y, Z) of each dividing line and the outer opening line of the cylinder and the outer opening line of the 2# guide plate. Import these coordinate values ​​into the modeling system to complete the modeling and development of the cylinder and the guide plate. The 4# guide plate is similar.

[0076] 5. Curve DAB is the intersection line of 1# guide plate and 2# guide plate. Use DAB as a boundary line of 1# guide plate, and use straight line OA as tangent (this ensures that OA is the maximum concave point of 1# guide plate), and then smooth the line of 1# guide plate. BCD is the intersection line of 2# guide plate and 3# guide plate. HEF is the intersection line of 3# guide plate and 4# guide plate, and 3# guide plate is smoothed. The smoothing of 1# and 3# guide plates can be done directly in the smoothing system. After smoothing 1# guide plate and 3# guide plate respectively, they can be imported into the modeling system for modeling, expanded, and the next stage of work.

[0077] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A double-sided guide plate lofting method, characterized in that: The double-side push guide plate lofting method comprises: In the side view of the double-sided deflector, the circular projection of the cylinder is divided into a number of equal parts along the axis system with an inclination angle, and a plurality of first-type intersection points are intersected on the axis system, wherein a plurality of the first-type intersection points include a number of the fixed points; Designing the chamfer angle according to the fixing point; According to the second type of intersection points of the fixed point and the chamfer on the cross-section diagram, wherein the second type of intersection points intersect with the outer plate ship line of the cross-section ship; Obtaining a cylinder expansion diagram according to the first type of intersection points and the second type of intersection points; adjusting a plurality of the first-type intersection points other than the fixed points to make the curve smooth; The lofted connecting guide plate is obtained according to the adjusted first-type intersection points and the fixed points.

2. The double-side guide plate lofting method according to claim 1, characterized in that: After the step of adjusting the plurality of first-type intersection points other than the fixed points to make the curve smooth, the method further comprises: Refine the spacing points and adjust the smoothness again.

3. The double-side guide plate lofting method according to claim 2, characterized in that: The double-side push guide plate lofting includes a first guide plate and a second guide plate, and 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 is connected to the first guide plate, the third guide plate and the first thrust cylinder; The fourth guide plate is connected to the outer plate and the second side thrust cylinder, as well as the third guide plate.

4. The double-side guide plate lofting method according to claim 3, characterized in that: The fixed points are four orthogonal intersection points.

5. The double-side deflector plate lofting method according to claim 4, characterized in that: Divide the circular projection into 12 equal parts.

6. The double-side guide plate layout method according to claim 5, characterized in that: Each equal division is divided into three equal parts.

7. The double-side guide 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.

8. The double-side guide plate layout method according to claim 7, characterized in that: The length of the chamfer adjusts the width of the second guide plate.

9. The double-side guide plate lofting method according to claim 8, characterized in that: The method is applied to the lofting of double-push guide plates of ships.

10. A ship with double-sided deflector plates, characterized in that: The ship comprises the double-sided thrust guide plate according to any one of claims 1 to 9.

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