CN112407183A - Lofting design method for hawse pipe and anchor platform - Google Patents
Lofting design method for hawse pipe and anchor platform Download PDFInfo
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- CN112407183A CN112407183A CN202011355804.5A CN202011355804A CN112407183A CN 112407183 A CN112407183 A CN 112407183A CN 202011355804 A CN202011355804 A CN 202011355804A CN 112407183 A CN112407183 A CN 112407183A
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- lofting
- anchor
- deck
- anchor platform
- hawse pipe
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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
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a lofting design method of an anchor chain cylinder and an anchor platform, which comprises the following steps: s1, respectively making a side view and a cross section of the anchor platform and the hawse pipe in the main ship body; s2, determining the position of the center line of the anchor chain cylinder and the inclination angles between the center line and the upper deck, the second deck and the anchor platform bottom plate; s3, unfolding and lofting the hawse pipe, and marking the intersecting lines of the hawse pipe, the upper deck, the second deck and the hull outer plate in a lofting drawing; s4, obtaining an opening diagram at the positions of an upper deck, a second deck and a hull outer plate; s5, obtaining a lofting drawing of the anchor platform bottom plate; s6, determining intersection points of the intersection lines of the anchor platform coamings and the hull outer plates and the rib molded lines, and sequentially marking the intersection points; and S7, unfolding and lofting the intersection line of the anchor platform boarding and the hull plate. The lofting design method of the invention carries out accurate lofting aiming at structures such as an anchor platform, an anchor chain cylinder and the like which are jointed with the curve type of the main hull structure, and meets the technical requirements of the construction process of the bow part section of the main hull.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a lofting design method of an anchor chain cylinder and an anchor platform.
Background
The lofting and unfolding work of the hawse pipe and the anchor platform in the ship bow section is mainly completed through traditional manual lofting, the defects of the manual lofting comprise low operation speed, large drawing precision deviation, unsmooth curvature of parts in the structure and the like, and the lofting precision of the structure of each part hardly meets the technical requirements of the process. On one hand, in order to meet the requirements of on-site manufacturing and installation, more allowance needs to be reserved for cold machining, structural assembly and hoisting and folding of the plate after lofting, and a large amount of repair and cutting operations are needed, so that the utilization rate of steel is insufficient, the production efficiency is low, and the construction cost of enterprises is increased; on the other hand, the manual lofting and unfolding of the hawse pipe and the anchor platform need to be repaired and cut and are corrected by fire, so that the production and assembly period is prolonged, the welding of the anchor platform coaming and the main hull outer plate and the structural performance of an intersecting line connecting point of the hawse pipe penetrating through the upper deck, the second deck and the like are greatly influenced, and the attractiveness of the ship is greatly reduced.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a layout design method for a hawse pipe and an anchor block with high layout accuracy.
The invention provides a lofting design method of an anchor chain cylinder and an anchor platform, which comprises the following steps:
s1, respectively making side view and cross-sectional view of the anchor platform and the hawse pipe in the main ship body according to the technical requirements of the existing mooring arrangement structure on the side view and the top view;
s2, determining the position of the center line of the anchor chain drum and the inclination angles between the center line and the upper deck, the second deck and the anchor platform bottom plate according to the side view and the cross section;
s3, according to the center line and the outer diameter information of the anchor chain cylinder, a cross section is taken, the obtained whole circle is equally divided, the station is marked at the equally divided position, the anchor chain cylinder is unfolded and lofted, and the intersecting lines of the anchor chain cylinder, the upper deck, the second deck and the hull outer plate are marked in a lofting drawing;
s4, respectively projecting each station onto the upper deck, the second deck and the outer hull plate according to the position information of the intersection line, the upper deck and the second deck, the information of the rib profile on the outer hull plate and the like, and obtaining a hole pattern of the hawse pipe penetrating through the upper deck, the second deck and the outer hull plate;
s5, projecting and unfolding the structure of the anchor platform bottom plate in the cross section to obtain a lofting drawing of the anchor platform bottom plate;
s6, determining intersection points of the intersection lines and the rib molded lines according to the intersection lines of the anchor platform coamings and the hull planking in the cross-sectional view, and sequentially marking the intersection points;
and S7, unfolding and lofting the intersection line of the anchor platform coamings and the hull plate by a triangle method, and marking out a lofting drawing of each anchor platform coamings according to the marks.
Preferably, in S2, the frame line a corresponding to the center line of the anchor chain barrel is determined according to the side view, and the range of a plurality of frame lines to be used subsequently is determined with the frame line a as the center.
Preferably, in S3, the hawse pipe is composed of two arcs of different thickness, and the bisector point is determined according to the girth of each arc.
Preferably, in S3, the number of stations is 12; the hawse pipe consists of two arc-shaped plates with the thickness of 40mm and 60mm respectively, and the inner diameter of each arc-shaped plate is 1550 mm.
The lofting design method of the invention carries out accurate lofting aiming at the structures such as the anchor platform, the hawse pipe and the like which are jointed with the curve of the main hull structure, and achieves high accuracy, thereby meeting the technical requirements of the construction process of the bow section of the main hull and meeting the requirements of precision size control.
Drawings
Figure 1 is a side view of the anchor platform and hawse pipe in the main hull;
FIG. 2 is a cross-sectional view of the anchor platform and hawse pipe in the main hull;
FIG. 3 is a lofting view of two arcuate panels, 40mm and 60mm, in the hawse pipe;
FIG. 4 is a view of the opening of the hawse pipe through the upper deck;
FIG. 5 is a view of the opening of the hawse pipe through the second deck;
FIG. 6 is a hole pattern at the outer plate of the ship
FIG. 7 is an illustration of an anchor pad deck layout;
FIG. 8 is an expanded view of the anchor platform coaming A/B/C/D/E/F/G/H blocks.
Element number description:
1 hawse pipe
2 Anchor platform
21 anchor platform bottom plate
22 anchor platform coaming
3 Rib molded line
4 hull plate
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention provides a lofting design method of an anchor chain cylinder and an anchor platform, which comprises the following steps:
s1, as shown in fig. 1 and 2, two-dimensional line drawings of the anchor block 2 and the hawse pipe 1 projections, i.e. side and cross sectional views of the anchor block 2 and hawse pipe 1 in the main hull, are made according to the requirements of the prior mooring layout structure for side and top views, respectively.
S2, as can be seen from fig. 1, the anchor platform 2 and the anchor chain tube 1 are mainly distributed on the left and right sides of the main hull, the projection of the center line of the anchor chain tube 1 in the side view coincides with the rib profile a, and subsequently, the range of the plurality of rib profiles 3 on the hull plate 4 to be used is determined with the rib profile a as the center. As can be seen from FIG. 2, the hawse pipe 1 extends through the upper deck 33700A/B and the second deck 28705A/B and out of the opening of the outer hull plate 4; the lower edges of the circle of anchor platform coamings 22 are connected with the hull outer plate 4, and the upper edges are connected with the anchor platform bottom plate 21; the lower end of the hawse pipe 1 extends out of the anchor platform bottom plate 21, and an inner opening in the anchor platform bottom plate 21 is positioned on an inclined plane and is oval. The inclination angles between the center line of the anchor chain cylinder 1 and the upper deck and the second deck are 63 degrees, and the inclination angle between the center line of the anchor chain cylinder 1 and the anchor platform bottom plate 21 is 53 degrees.
S3, as shown in fig. 2 and 3, the hawse pipe 1 is a cylinder made up of two arc-shaped plates with a thickness t of 40mm and 60mm, respectively, each arc-shaped plate having an inner diameter of 1550 mm. And when the two arc plates are unfolded by taking the neutral axis of the two arc plates as a reference, the outer diameter D1 of the arc plate with t being 60mm is 1550+60 × 1/2 × 2 being 1610mm, and the outer diameter D2 of the arc plate with t being 40mm is 1550+40 × 1/2 × 2 being 1590 mm. Taking a cross section of the hawse pipe 1 in a cross section, and dividing the whole circle structure of the two arc-shaped plates into twelve equal parts to obtain the stations from 1# to 12 #. The arc plate with t-60 mm has the girth C1 pi D1/2 pi 3.1416 pi 1610mm/2 pi 2529mm, and the arc plate with t-40 mm has the girth C2 pi D2/2 pi 3.1416 mm/1590 mm/2 pi 2498 mm. The line between sites 4# and 10# is the dividing line between the two semi-circles, sites 5#, 6#, 7#, 8# and 9# divide C1 into six equal parts, and sites 11#, 12#, 1#, 2# and 3# divide C2 into six equal parts. Parallel lines are pushed out from the upper opening and the lower opening of the hawse pipe 1 in fig. 2, angle square lines are cut, lofting drawings of two arc-shaped plates are respectively obtained in a plain line projection mode, and intersecting lines of the hawse pipe 1, the upper deck, the second deck, a breaking line and the hull outer plate 4 are marked in the lofting drawings. During the installation, the arc that t equals 60mm is located the below of the arc that t equals 40mm to directly contact with the ship anchor, the damage of ship anchor to the hawse pipe when its great thickness can effectively prevent to drag the ship anchor, extension part life.
S4, as shown in fig. 4-6, projecting each station of the two arc plates onto the upper deck, the second deck and the outer hull plate 4 respectively according to the information of the rib profiles 3 on the upper deck, the second deck and the outer hull plate 4, and obtaining the opening pattern of the hawse pipe 1 passing through the upper deck, the second deck and the outer hull plate 4.
S5, as shown in fig. 2 and 7, the structure of the anchor platform bottom plate 21 in the cross section is projected and expanded to obtain a loft drawing of the anchor platform bottom plate 21.
S6, as shown in fig. 2, determining the intersection point of the intersection line and each rib line 3 according to the intersection line of the anchor platform boarding 22 and the hull plate 4 in the cross-sectional view, and sequentially marking each intersection point as 1# to 24 #.
S7, as shown in FIG. 8, the intersecting lines are expanded and lofted through a triangle method, the intersecting lines are connected with each intersection in a smooth manner, and a lofting chart of 8 anchor platform boarding plates 22 is divided according to the labels, wherein the A part comprises intersections 2# to 5#, the B part comprises intersections 5# to 8#, the C part comprises intersections 8# to 11#, the D part comprises intersections 11# to 14#, the E part comprises intersections 14# to 17#, the F part comprises intersections 17# to 20#, the G part comprises intersections 20# to 23#, and the H part comprises intersections 23# to 2 #.
In summary, the invention provides a lofting design method for a ship anchor platform and an anchor chain tube, which can create the anchor platform into a main hull rib line and optimize the main size of the expanded precision of the anchor platform and the anchor chain tube by adopting a projection mode. The integral anchor chain cylinder is broken and decomposed into 2 arc-shaped plates, the two arc-shaped plates are respectively unfolded and lofted, lofting drawings and relevant process technical information are obtained, and meanwhile, hole patterns of two layers of decks and outer plates penetrated by the anchor chain cylinder are obtained. Therefore, the lofting design method of the invention carries out accurate lofting on structures such as an anchor platform, an anchor chain cylinder and the like which are jointed with the main hull structure in a curve shape, and achieves high accuracy, thereby meeting the technical requirements of the construction process of the bow section of the main hull and meeting the requirements of precision size control.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (4)
1. A lofting design method for a hawse pipe and an anchor block is characterized by comprising the following steps:
s1, respectively making side view and cross-sectional view of the anchor platform (2) and the hawse pipe (1) in the main hull according to the technical requirements of the existing mooring arrangement structure on the side view and the top view;
s2, determining the position of the center line of the anchor chain drum (1) and the inclination angle between the center line and the upper deck, the second deck and the anchor platform bottom plate (21) according to the side view and the cross section;
s3, taking a cross section according to the information of the center line and the outer diameter of the hawse pipe (1), equally dividing the obtained whole circle, marking stations at equal division positions, unfolding and lofting the hawse pipe (1), and marking the intersection lines of the hawse pipe (1), the upper deck, the second deck and the ship outer plate (4) in a lofting drawing;
s4, respectively projecting each station onto the upper deck, the second deck and the outer ship body plate (4) according to the position information of the intersection line, the upper deck and the second deck, and the information of the rib molded lines (3) on the outer ship body plate (4) and the like, and obtaining an opening diagram of the hawse pipe (1) penetrating through the upper deck, the second deck and the outer ship body plate (4);
s5, projecting and unfolding the structure of the anchor platform bottom plate (21) in the cross section to obtain a lofting drawing of the anchor platform bottom plate (21);
s6, determining the intersection points of the intersection lines and the rib line (3) according to the intersection lines of the anchor platform coamings (22) and the hull outer plates (4) in the cross-sectional view, and sequentially marking the intersection points;
s7, unfolding and lofting the intersection line of the anchor platform coaming (22) and the hull plate (4) by a triangle method, and marking out a lofting drawing of each anchor platform coaming (22) according to the mark.
2. The loft design method according to claim 1, wherein in S2, a frame profile a corresponding to the center line of the anchor chain tube (1) is determined from the side view, and a range of a plurality of frame profiles (3) to be used subsequently is determined centering on the frame profile a.
3. A loft design method according to claim 1, wherein in S3 the hawse pipe (1) is composed of two arc-shaped plates with different thicknesses, and the bisector point is determined according to the girth of each arc-shaped plate.
4. A loft design method according to claim 3, wherein in S3, the number of sites is 12; the hawse pipe (1) consists of two arc-shaped plates with the thickness of 40mm and 60mm respectively, and the inner diameter of each arc-shaped plate is 1550 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355804.5A CN112407183A (en) | 2020-11-26 | 2020-11-26 | Lofting design method for hawse pipe and anchor platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355804.5A CN112407183A (en) | 2020-11-26 | 2020-11-26 | Lofting design method for hawse pipe and anchor platform |
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| CN112407183A true CN112407183A (en) | 2021-02-26 |
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| CN202011355804.5A Pending CN112407183A (en) | 2020-11-26 | 2020-11-26 | Lofting design method for hawse pipe and anchor platform |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918634A (en) * | 2021-03-04 | 2021-06-08 | 江南造船(集团)有限责任公司 | Precision control method for ship anchoring system structure |
| CN113428316A (en) * | 2021-07-27 | 2021-09-24 | 江南造船(集团)有限责任公司 | Iron outfitting pipe lofting and unfolding method |
| CN113955039A (en) * | 2021-11-19 | 2022-01-21 | 沪东中华造船(集团)有限公司 | Method for controlling mounting precision of hawse pipe in total assembly stage |
| CN114987716A (en) * | 2022-06-29 | 2022-09-02 | 中船黄埔文冲船舶有限公司 | Seam arranging method for hull outer plate |
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| CN101407246A (en) * | 2008-11-14 | 2009-04-15 | 大连船舶重工集团有限公司 | Method for fairing and mounting shipping anchor lug and hawse pipe |
| CN108001614A (en) * | 2017-12-08 | 2018-05-08 | 中船黄埔文冲船舶有限公司 | A kind of lofting Design method of large-scale anchor station and anchor lip |
| CN109094723A (en) * | 2018-09-28 | 2018-12-28 | 中船黄埔文冲船舶有限公司 | A kind of hawse-pipe and anchor station fabrication and installation method |
| CN109094724A (en) * | 2018-09-28 | 2018-12-28 | 中船黄埔文冲船舶有限公司 | A kind of anchor lip lofting Design method |
| CN110626462A (en) * | 2019-10-29 | 2019-12-31 | 中船黄埔文冲船舶有限公司 | Lofting design method for anchor recess |
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2020
- 2020-11-26 CN CN202011355804.5A patent/CN112407183A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407246A (en) * | 2008-11-14 | 2009-04-15 | 大连船舶重工集团有限公司 | Method for fairing and mounting shipping anchor lug and hawse pipe |
| CN108001614A (en) * | 2017-12-08 | 2018-05-08 | 中船黄埔文冲船舶有限公司 | A kind of lofting Design method of large-scale anchor station and anchor lip |
| CN109094723A (en) * | 2018-09-28 | 2018-12-28 | 中船黄埔文冲船舶有限公司 | A kind of hawse-pipe and anchor station fabrication and installation method |
| CN109094724A (en) * | 2018-09-28 | 2018-12-28 | 中船黄埔文冲船舶有限公司 | A kind of anchor lip lofting Design method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918634A (en) * | 2021-03-04 | 2021-06-08 | 江南造船(集团)有限责任公司 | Precision control method for ship anchoring system structure |
| CN113428316A (en) * | 2021-07-27 | 2021-09-24 | 江南造船(集团)有限责任公司 | Iron outfitting pipe lofting and unfolding method |
| 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 |
| CN113955039A (en) * | 2021-11-19 | 2022-01-21 | 沪东中华造船(集团)有限公司 | Method for controlling mounting precision of hawse pipe in total assembly stage |
| CN114987716A (en) * | 2022-06-29 | 2022-09-02 | 中船黄埔文冲船舶有限公司 | Seam arranging method for hull outer plate |
| CN114987716B (en) * | 2022-06-29 | 2023-12-22 | 中船黄埔文冲船舶有限公司 | Seam arranging method for hull planking |
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Application publication date: 20210226 |