CN109094724B - Anchor lip lofting design method - Google Patents
Anchor lip lofting design method Download PDFInfo
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- CN109094724B CN109094724B CN201811135475.6A CN201811135475A CN109094724B CN 109094724 B CN109094724 B CN 109094724B CN 201811135475 A CN201811135475 A CN 201811135475A CN 109094724 B CN109094724 B CN 109094724B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/10—Designing vessels; Predicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
Abstract
The invention discloses an anchor lip lofting design method, which comprises the steps of converting and projecting a first projection line of an anchor lip and a second projection line of an anchor chain cylinder to obtain a first intersecting line of the anchor lip on a water line surface and a second intersecting line of the anchor chain cylinder on an outer plate, further obtaining a marking sample of the anchor lip and an opening sample of the anchor chain cylinder, projecting a plurality of projection surfaces on a water line surface graph, and obtaining an outer opening line and an inner opening line of the anchor lip to finish a lofting process.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to an anchor lip lofting design method.
Background
In the anchor system of some boats and ships, often design into the anchor lip and directly paste on hull planking, through the size increase thickening with the anchor lip to omit the structure of anchor platform, played the effect of simplification, also do benefit to subsequent assembly work.
However, since the profile of the nose changes drastically and the anchor lip is directly attached to the outer plate of the nose, high accuracy is required for setting up the anchor lip. The existing anchor lip lofting method is low in precision and long in construction period, and causes difficulty in site construction and low efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the anchor lip lofting design method which combines molded lines of a plurality of planes, simplifies the lofting process and improves the lofting precision.
In order to solve the technical problem, the invention provides an anchor lip lofting design method, which comprises the following steps of:
s1, acquiring a first projection line of an outer opening line of the anchor lip on the side view according to data on the side view of the ship, and acquiring a center line and a second projection line of the hawse pipe on the water line view according to data on the water line view of the ship;
s2, dividing the first projection line into a plurality of first branch points, projecting the first branch points onto the water line surface diagram, wherein the first branch points and the corresponding water line are intersected to form first intersection points, and connecting the first intersection points in a smooth manner to obtain a first intersection line of the outer opening line of the anchor lip on the water line surface diagram;
s3, dividing the second projection line into a plurality of second points, creating corresponding bisectors of the second points in parallel to the central line, creating a first projection plane along the central line, projecting the second projection line and the bisectors of the anchor chain cylinder to the first projection plane, wherein the bisectors intersect with corresponding waterlines at second intersection points, and connecting the second intersection points in a smooth manner to obtain a second intersecting line of the anchor chain cylinder on the outer plate,
s4, unfolding the first intersecting line and the second intersecting line, and obtaining an opening sample of the hawse pipe on the outer plate and a scribing sample of the anchor lip on the outer plate;
s5, on the water line surface diagram, creating a second projection surface along the center which is perpendicular to the outer plate and passes through the second projection line, creating a parallel surface which is parallel to the outer plate on the second projection surface, creating a third projection surface along the direction which is perpendicular to the parallel surface, projecting the first branch point and the second branch point to the third projection surface, and acquiring an outer mouth line and an inner mouth line of the anchor lip;
and S6, outputting a lofting map of the anchor lip.
Preferably, in step S4, at least one rib line and a waterline position are marked on the opening pattern of the anchor chain case and the scribing pattern of the anchor lip, and the installation direction is marked.
Preferably, the installation direction includes four directions of marking a head part, a tail part, an upper port and a lower port.
Preferably, in step S5, a water line passing through the center of the second projection line and two intersections between the water line and the second projection line are obtained on the water line map, the two intersections are connected to form a first straight line, and a second projection plane is created along a line perpendicular to the straight line and passing through the center of the second projection line.
Preferably, in step S5, an upper end point and a lower end point of the second projection line are obtained on the second projection plane, the upper end point and the lower end point are connected to form a second straight line, and a parallel plane passing through the center of the first projection line and parallel to the second straight line is created.
Preferably, in step S5, the real shape of the outer panel is acquired on the second projection plane based on the distance from each point on the first projection line to the parallel plane.
Preferably, in step S5, the shape of each cross-section of the anchor lip is obtained from a known pattern.
Compared with the prior art, the anchor lip lofting design method provided by the embodiment of the invention has the beneficial effects that: according to the invention, the first projection line of the anchor lip and the second projection line of the anchor chain cylinder are subjected to conversion projection to obtain the first intersecting line of the anchor lip on the water plane diagram and the second intersecting line of the anchor chain cylinder on the outer plate, so that the marking sample of the anchor lip and the opening sample of the anchor chain cylinder are obtained, a plurality of projection planes are projected on the water plane diagram, and the outer opening line and the inner opening line of the anchor lip are obtained to complete the lofting process.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side view of the anchor lip loft design method of a preferred embodiment of the present invention.
FIG. 2 is a water line view of the anchor lip lofting design method of the preferred embodiment of the present invention.
Fig. 3 is an enlarged view of W in fig. 2.
Fig. 4 is a schematic view of a first projection plane in the direction of a-a in fig. 2.
Fig. 5 is an expanded view illustration of fig. 2.
Fig. 6 is a schematic view of a second projection plane in the direction B-B in fig. 2.
Fig. 7 is a schematic view of a third projection plane in the direction S in fig. 6.
FIG. 8 is a schematic illustration of an anchor lip cast-out using the anchor lip lofting design method of the preferred embodiment of the present invention.
In the figure: 1. cutting a line; 2. a waterline; 3. a first projection line; 4. a second projection line; 5. a first intersecting line; 6. a second intersecting line; 7. opening sample; 8. marking a line; 9. a parallel plane; 10. an outer port line; 11. an inner port line; 12. an anchor lip; 13. an inner opening of the anchor lip; 14. and an outer opening of the anchor lip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without creating any inventive step, are within the scope of the present invention.
As shown in FIG. 1, a preferred embodiment of the present invention provides a method of anchor lip lofting design, comprising the steps of:
s1, acquiring a first projection line 3 of an outer opening line 10 of the anchor lip 12 on the side view according to data on the side view of the ship, and acquiring a central line and a second projection line 4 of the hawse pipe on the waterline 2 view according to data on the waterline 2 view of the ship;
s2, dividing the first projection line 3 into a plurality of first points, projecting the first points onto the waterline 2-plane graph, wherein the first points intersect the corresponding waterline 2 to form first intersection points, and connecting the first intersection points in a smooth manner to obtain a first intersection line of the outer opening line 10 of the anchor lip 12 on the waterline 2-plane graph;
s3, dividing the second projection line 4 into a plurality of second points, creating corresponding bisectors of the second points in parallel to the central line, creating a first projection plane along the central line, projecting the second projection line 4 and the bisectors of the anchor chain tube to the first projection plane, wherein the bisectors intersect with the corresponding waterlines 2 at second intersection points, and connecting the second intersection points in an optical straight line to obtain a second intersecting line of the anchor chain tube on the outer plate,
s4, unfolding the first intersecting line and the second intersecting line 6, and obtaining an opening sample 7 of the hawse pipe on the outer plate and a scribing sample 8 of the anchor lip 12 on the outer plate;
s5, creating a second projection plane on the waterline 2 plane along the center perpendicular to the outer plate and passing through the second projection line 4, creating a parallel plane 9 parallel to the outer plate on the second projection plane, creating a third projection plane along the direction perpendicular to the parallel plane 9, projecting the first and second points to the third projection plane, and obtaining the outer opening line 10 and the inner opening line 11 of the anchor lip 12;
and S6, outputting a lofting map of the anchor lip 12.
The anchor lip lofting design method based on the technical characteristics obtains a first intersecting line 5 of the anchor lip 12 on the water line 2 surface and a second intersecting line 6 of the anchor chain cylinder on the outer plate by converting and projecting a first projection line 3 of the anchor lip 12 and a second projection line 4 of the anchor chain cylinder, further obtains a marking pattern 8 of the anchor lip 12 and an opening pattern 7 of the anchor chain cylinder, projects a plurality of projection surfaces through the water line 2 surface diagram, and obtains an outer opening line 10 and an inner opening line 11 of the anchor lip 12 to complete a lofting process.
Specifically, as shown in fig. 1 and 2, the first projection line 3 is divided into 7 first division points a to G, the second projection line 4 is divided into 12 second division points 1 to 12, the first intersection line and the second intersection line are obtained by projection according to the water line 2 and the section line 1 of the outer panel, and it is required to ensure that the light smoothness of the first intersection line and the second intersection line is obtained on the projection plane.
Further, in the step S4, at least one rib line and a position of a waterline 2 are marked on the opening pattern 7 of the anchor chain tube and the marking pattern 8 of the anchor lip 12, and the installation direction is marked, so that the anchor chain tube and the anchor lip 12 can be installed, positioned and assembled in a subsequent process, and the installation accuracy is improved.
Further, the mounting direction includes four directions of marking a head portion, a tail portion, an upper opening and a lower opening, which facilitates positioning of the hawse pipe and the anchor lip 12.
Further, in step S5, the water line 2 passing through the center of the second projection line 4 and two intersections between the water line 2 and the second projection line 4 are acquired on the water line 2 plane, the two intersections are connected to form a first straight line, and a second projection plane is created along a plane perpendicular to the straight line and passing through the center of the second projection line 4, where the actual shape of the outer panel is not a plane, so that the second projection plane is created by using the first straight line, and the second projection plane is created by finding a plane approximately perpendicular to the outer panel.
Further, in step S5, an upper end point and a lower end point of the second projection line 4 are obtained on the second projection plane, the upper end point and the lower end point are connected to form a second straight line, a parallel plane 9 passing through the center of the first projection line 3 and parallel to the second straight line is created, and the parallel plane 9 approximating the outer panel is obtained, specifically, in this embodiment, as shown in fig. 6, two points A, E are connected to form a straight line on the second projection plane, and then a second straight line parallel to the line segment AE is made passing through the center point to obtain the parallel plane 9.
Further, in step S5, the real shape of the outer panel, that is, the real shape of the first projection line 3 and the second projection line 4 on the outer panel, is obtained according to the distance between each point on the first projection line 3 and the parallel plane 9 on the second projection plane.
Further, in the step S5, the shape of each cross section of the anchor lip 12 is obtained according to a known pattern, and in addition, as shown in fig. 7, the actual shape of the inner mouth 13 and the outer mouth 14 of the anchor lip is obtained by taking an appropriate height parallel to the parallel plane 9 as a cut plane, so as to check whether the anchor lip 12 is smooth, and as shown in fig. 8, a casting pattern of the anchor lip is obtained according to the third projection plane.
Further, in step S6, the layout of the anchor lip 12 is marked with at least one waterline 2, one rib line and the installation direction.
In summary, in the anchor lip lofting design method according to the embodiment of the present invention, a side view and a waterline 2 view are combined, and the actual shapes of the opening sample 7 of the anchor chain tube on the outer panel, the scribing sample 8 of the anchor lip 12 on the outer panel, the anchor lip inner opening 13, the anchor lip outer opening 14 and the anchor lip 12 are obtained by converting the projection mode of the views.
The above is a detailed description of an embodiment of an anchor lip lofting design method provided by an embodiment of the present invention, and the following is a detailed description of an embodiment of an anchor lip lofting design apparatus provided by an embodiment of the present invention.
The embodiment of the invention provides an anchor lip lofting design device, which comprises:
the projection line acquisition module is used for acquiring a first projection line 3 of an outer opening line 10 of the anchor lip 12 on the side view according to data on the side view of the ship, and acquiring a central line and a second projection line 4 of the hawse pipe on the water line 2 according to data on the water line 2 of the ship;
the division point obtaining module is used for equally dividing the first projection line 3 into a plurality of first division points, projecting the first division points onto the waterline 2-plane graph, wherein the first division points and the corresponding waterline 2 intersect to form first intersection points, and smoothly connecting the first intersection points to obtain a first intersection line of the outer opening line 10 of the anchor lip 12 on the waterline 2-plane graph;
an intersecting line obtaining module, configured to divide the second projection line 4 equally into a plurality of second intersecting points, create a bisector corresponding to each of the second intersecting points parallel to the center line, create a first projection plane along the center line, project the second projection line 4 and the bisector of the hawse pipe onto the first projection plane, where the bisector intersects with the corresponding waterline 2 at a second intersection point, and connect each of the second intersection points in a straight-line manner to obtain a second intersecting line of the hawse pipe on the outer panel,
the unfolding module is used for unfolding the first intersecting line and the second intersecting line 6 to obtain an opening sample 7 of the hawse pipe on the outer plate and a scribing sample 8 of the anchor lip 12 on the outer plate;
a model obtaining module, configured to create a second projection plane on the waterline 2 plane along a direction perpendicular to the outer panel and passing through a center of the second projection line 4, create a parallel plane 9 parallel to the outer panel on the second projection plane, create a third projection plane along a direction perpendicular to the parallel plane 9, project the first and second division points onto the third projection plane, and obtain an outer mouth line 10 and an inner mouth line 11 of the anchor lip 12;
and the output module is used for outputting the lofting drawing of the anchor lip 12.
Further, the unfolding module further comprises: and the marking unit is used for marking at least one rib line and the position of a waterline 2 on the opening sample 7 of the anchor chain cylinder and the marking sample 8 of the anchor lip 12 and marking the installation direction, wherein the installation direction comprises four directions of marking a head part, a tail part, an upper opening and a lower opening.
Further, the model obtaining module further comprises: and the vertical plane acquisition unit is used for acquiring a water line 2 passing through the center of the second projection line 4 and two intersection points between the water line 2 and the second projection line 4 on the water line 2, connecting the two intersection points into a first straight line, and creating a second projection plane along the straight line which is perpendicular to the straight line and passes through the center of the second projection line 4.
Further, the model obtaining module further comprises: a parallel plane 9 obtaining unit, configured to obtain an upper end point and a lower end point of the second projection line 4 on the second projection plane, connect the upper end point and the lower end point to form a second straight line, and create a parallel plane 9 that passes through a center of the first projection line 3 and is parallel to the second straight line.
Further, the model obtaining module further comprises: and the shape acquisition unit is used for acquiring the real shape of the outer plate on the second projection plane according to the distance from each point on the first projection line 3 to the parallel plane 9.
Further, the shape obtaining unit is also used for obtaining the shape of each section of the anchor lip 12 according to a known figure.
It is clear to those skilled in the art that, for a more convenient and concise description, the specific working processes of the devices, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An anchor lip lofting design method is characterized by comprising the following steps:
s1, acquiring a first projection line of an outer opening line of the anchor lip on the side view according to data on the side view of the ship, and acquiring a center line and a second projection line of the hawse pipe on the water line view according to data on the water line view of the ship;
s2, dividing the first projection line into a plurality of first branch points, projecting the first branch points onto the water line surface diagram, wherein the first branch points and the corresponding water line are intersected to form first intersection points, and connecting the first intersection points in a smooth manner to obtain a first intersection line of the outer opening line of the anchor lip on the water line surface diagram;
s3, dividing the second projection line into a plurality of second points, creating corresponding bisectors of the second points in parallel to the central line, creating a first projection plane along the central line, projecting the second projection line and the bisectors of the anchor chain cylinder to the first projection plane, wherein the bisectors intersect with corresponding waterlines at second intersection points, and connecting the second intersection points in a smooth manner to obtain a second intersecting line of the anchor chain cylinder on the outer plate;
s4, unfolding the first intersecting line and the second intersecting line, and obtaining an opening sample of the hawse pipe on the outer plate and a scribing sample of the anchor lip on the outer plate;
s5, on the water line surface diagram, creating a second projection surface along the center which is perpendicular to the outer plate and passes through the second projection line, creating a parallel surface which is parallel to the outer plate on the second projection surface, creating a third projection surface along the direction which is perpendicular to the parallel surface, projecting the first branch point and the second branch point to the third projection surface, and acquiring an outer mouth line and an inner mouth line of the anchor lip;
and S6, outputting a lofting map of the anchor lip.
2. The anchor lip lofting design method according to claim 1, wherein in step S4, at least one rib line and a waterline position are marked on the opening pattern of the anchor chain case and the scribing pattern of the anchor lip, and the installation direction is marked.
3. The anchor lip loft design method of claim 2, wherein the installation direction includes four directions of marking a nose, a tail, an upper mouth, and a lower mouth.
4. The anchor lip lofting design method according to claim 1, wherein in the step S5, a waterline passing through a center of the second projection line and two intersections between the waterline and the second projection line are obtained on the water line plan, the two intersections are connected to form a first straight line, and a second projection plane is created along a line perpendicular to the straight line and passing through the center of the second projection line.
5. The anchor lip lofting design method according to claim 1, wherein in the step S5, an upper end point and a lower end point of the second projection line are acquired on the second projection plane, the upper end point and the lower end point are connected to form a second straight line, and a parallel plane passing through a center of the first projection line and parallel to the second straight line is created.
6. The anchor lip lofting design method according to claim 1, wherein in step S5, a true shape of the outer panel is obtained on the second projection plane based on distances from respective points on the first projection line to the parallel plane.
7. The anchor lip lofting design method of claim 6, wherein in step S5, the shape of each cross section of the anchor lip is obtained from a known pattern.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110254609B (en) * | 2019-06-21 | 2021-05-11 | 中船黄埔文冲船舶有限公司 | Lofting method and system for fender end plate |
| CN112319723B (en) * | 2020-10-28 | 2021-10-22 | 中船黄埔文冲船舶有限公司 | Lofting design method and system for anchor lip and anchor platform |
| CN112182780B (en) * | 2020-10-29 | 2023-12-05 | 中船黄埔文冲船舶有限公司 | Method for unfolding double-plate bilge keels |
| CN112407183A (en) * | 2020-11-26 | 2021-02-26 | 江南造船(集团)有限责任公司 | Lofting design method for hawse pipe and anchor platform |
| CN113428316B (en) * | 2021-07-27 | 2022-06-14 | 江南造船(集团)有限责任公司 | Iron outfitting pipe lofting and unfolding method |
| CN115009469B (en) * | 2022-06-30 | 2023-06-23 | 中船黄埔文冲船舶有限公司 | Lofting design method for processing template |
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Application publication date: 20181228 Assignee: GUANGZHOU WENCHONG SHIPYARD Co.,Ltd. Assignor: CSSC HUANGPU WENCHONG SHIPBUILDING Co.,Ltd. Contract record no.: X2021440000195 Denomination of invention: A lofting design method of anchor lip Granted publication date: 20200207 License type: Common License Record date: 20211021 |