CN114248884B - Installation method of large steel casting at ship head - Google Patents
Installation method of large steel casting at ship head Download PDFInfo
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- CN114248884B CN114248884B CN202111544822.2A CN202111544822A CN114248884B CN 114248884 B CN114248884 B CN 114248884B CN 202111544822 A CN202111544822 A CN 202111544822A CN 114248884 B CN114248884 B CN 114248884B
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- outer plate
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- plate
- inner member
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 35
- 238000005266 casting Methods 0.000 title claims abstract description 35
- 239000010959 steel Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 title claims description 9
- 238000003466 welding Methods 0.000 claims abstract description 69
- 210000000988 bone and bone Anatomy 0.000 claims description 18
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 39
- 230000011218 segmentation Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a method for installing a large steel casting at the head of a ship, which takes a left outer plate paved on a curved surface jig as a construction base surface, so that the head steel casting is assembled at the head of the left outer plate in a side state, then a segmented inner member is installed on the left outer plate, a right outer plate is scattered and stuck, finally the segmented inner member is turned over in a scattered manner, the rest welding work of the segmented inner part is completed, the whole segmentation and the steel casting assembly are completed, the construction efficiency can be effectively improved, the construction quality is improved, and the construction period is shortened.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a method for installing a large steel casting at the head of a ship.
Background
Because the bow of the ship can be impacted greatly by water flow in the course of sailing, and the stem is in the structure at the forefront end of the ship body, the maximum water pressure, wave impact force and external collision force are born, the stem of the ship needs to have enough rigidity and strength, and in order to ensure good crashworthiness of the bow of the ship, a cast steel part is generally used for the stem of the underwater part.
The conventional segmentation that contains head cast steel can adopt the mode of standing to assemble, takes the floor as the basal plane promptly, makes the position of cast steel upwards, can hang head cast steel with the crane to corresponding position and segmentation completion welding assembly after the segmentation installation is finished like this. The installation mode is simpler and more direct, but has larger construction difficulty and potential safety hazard. Because the vertical construction mode is adopted, when the subsection is vertical, the whole subsection is higher, so that more construction states belong to high-altitude operation in the subsection construction process, and the high-altitude operation has larger potential safety hazards, and meanwhile, the construction condition is poorer, so that the construction is difficult to a certain extent, and the problem of construction quality is unavoidable. Meanwhile, the sectional height is higher, so that certain requirements are also met on construction sites, and enough height space requirements are needed to facilitate the sectional hoisting installation.
On the other hand, the common cast steel is heavier, the lifting height is higher during vertical construction, so that the falling positioning of the cast steel on the sections is uncontrollable, a certain degree of positioning deviation exists, and the construction precision error is easy to cause.
Meanwhile, because the sectional and steel casting are vertical, more transverse welding seams and bottom welding seams inevitably exist in the construction process, and due to the action of gravity, the transverse welding seams and the bottom welding seams are very easy to cause welding defects, so that the problems of insufficient welding effective surfaces or weak welding strength and the like are caused, particularly the bottom welding seams, more welding reworks are caused, the sectional construction period is influenced, and the construction load and the construction cost are increased.
Disclosure of Invention
In view of the above, the invention provides a method for installing a large-scale steel casting on the head of a ship, which can effectively solve the problems of construction difficulty and unnecessary loss in the construction process described in the background art, simultaneously lighten the production load, promote the production progress, improve the construction quality, adjust the sectional construction state from vertical construction to lateral construction, avoid overhead operation, prevent transverse welding lines and backstitch in a large area, improve the construction condition, greatly improve the welding quality, ensure the construction precision, lighten the workload of constructors, avoid construction rework, promote the production progress and improve the construction efficiency.
The installation method of the large steel casting at the head of the ship specifically comprises the following steps:
s1, tiling a left outer plate on a curved jig frame matched with the linear type of the left outer plate, and arranging a plurality of left longitudinal bones on the left outer plate at certain intervals;
s2, placing the small head assembly on a curved surface jig frame and welding and fixing the small head assembly with one side edge of the left outer plate;
S3, placing the side state of the head steel casting on a curved surface jig frame, and welding and fixing the head steel casting with the other adjacent side edge of the left outer plate, the head small assembly and each left longitudinal bone;
S4, sequentially fixing the segmented internal components on the left outer plate;
S5, the right outer plate is scattered and stuck on the sectional inner member, the right outer plate and the sectional inner member are fixed by spot welding, and the right outer plate and the head steel casting are fixed by welding;
s6, turning over the whole section to enable the right side outer plate to be attached to the curved surface jig frame, and completely welding the contact part between the right side outer plate and the section inner member.
Preferably, in step S1, when the left outer plate is tiled on the curved tire frame, the weld groove faces to the side away from the curved tire frame.
Preferably, the segmented inner member comprises a platform plate, ribs and right longitudinal bones;
in step S4, the specific steps of sequentially fixing the segmented inner member on the left outer plate are as follows:
The platform plate is vertically fixed on the left outer plate, is arranged along the length direction of the left outer plate and is parallel to the left longitudinal bone;
The rib plate is vertically fixed on the left outer plate, and the rib plate is vertical to the platform plate and passes through each left longitudinal bone along the height direction of the left outer plate; ;
a plurality of right longitudinal bones are fixed at the upper ends of the rib plates by spot welding.
Preferably, the right longitudinal bones are in one-to-one correspondence with the left longitudinal bones.
Preferably, in step S5, when the right outer plate is scattered and attached to the segmented inner member, the weld groove thereof faces away from the curved jig frame.
Preferably, in step S6, when the contact portion between the right outer plate and the segmented inner member is completely welded, the welding between the right outer plate and the right longitudinal rib, the welding between the right outer plate and the rib plate, and the welding between the right outer plate and the platform plate bracket are included.
Preferably, the welds between the left side outer plate and the segmented inner member and the header cast are butt welds, and the welds between the right side outer plate and the segmented inner member and the header cast are butt welds.
The beneficial effects of the invention are as follows:
1. The invention takes a left outer plate paved on a curved surface jig as a building base surface, so that a head steel casting is assembled at the head of the left outer plate in a side state, then a segmented inner member is installed on the left outer plate, a right outer plate is scattered and attached, finally the segments turn over, the rest welding work in the segments is completed, and the whole segments and the steel casting are assembled.
2. Because the curvature of the ship head outer plate is greatly changed, the curved surface jig frame is arranged according to the outer plate line type, the splicing of the left outer plate and the installation of the left longitudinal rib are completed on the jig frame, meanwhile, the left outer plate line type can be calibrated, and the outer plate line type deviation caused in the construction process can be effectively regulated. Because the left side planking is the tiling on curved surface bed-jig, and the welding seam groove of left side planking up, the welding seam welding of left side planking and the welding between left side planking and the longitudinal frame are the butt weld, have alleviateed constructor's work load greatly, have improved the welding construction environment, and the welding technique requirement of butt weld is lower simultaneously, can effectively promote welding quality, reduces the reworking.
On the other hand, the right side outer plate is scattered and stuck on the sectional inner member, the welding groove of the right side outer plate is upward, at the moment, the spliced right side outer plate is flat welding, and constructors splice the right side outer plate outside the section in a welding way, so that the construction difficulty is low, and the construction environment is good. The right outer plate and the head steel casting are welded in a flat welding mode.
3. The invention has convenient and flexible operation, not only avoids the high-altitude operation of constructors, but also avoids the high-altitude hoisting of steel castings and the high requirement on construction sites, simultaneously creates better construction conditions for constructors, simultaneously avoids the overhead welding work in a large area, can effectively improve the construction efficiency, improves the construction quality, shortens the construction period and reduces the production cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed 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 that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is an expanded schematic view of the left side outer panel.
Fig. 2 is a schematic sectional view.
Fig. 3 is a sectional construction schematic.
The meaning of the reference numerals in the figures is:
1 is a curved surface jig frame;
2 is a left side outer plate;
3 is a head steel casting;
4 is a right outer plate;
5 is left longitudinal bone;
6, header small groups;
7 is a platform plate;
8 is a rib plate;
9 is the right longitudinal bone.
Detailed Description
For a better understanding of the technical solution of the present invention, the following detailed description of the embodiments of the present invention refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The application will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
In the description of the present specification, it should be understood that the terms "upper", "lower", "left", "right" and the like in the embodiments of the present application are described in terms of angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.
The invention provides a method for installing a large steel casting at the head of a ship, which takes a left outer plate 2 paved on a curved surface jig frame 1 as a building base surface, so that the head steel casting 3 is assembled at the head of the left outer plate 2 in a side state, then sectional internal components are installed on the left outer plate 2, a right outer plate 4 is scattered and attached, finally, the sectional internal residual welding work is completed, and the whole sectional and steel casting assembly is completed.
The invention relates to a method for installing a large steel casting at the head of a ship, which specifically comprises the following steps:
s1, the left outer plate 2 is flatly paved on a curved jig frame 1 matched with the linear type of the left outer plate, and a plurality of left longitudinal bones 5 are arranged on the upper end surface of the left outer plate 2 at certain intervals.
When the left outer plate 2 is flatly paved on the curved surface jig frame 1, the weld groove faces to one side away from the curved surface jig frame 1.
The splicing of the left outer plate and the installation of the left longitudinal bone are all flat welding.
S2, placing the small head assembly 6 on the curved surface jig frame 1 and welding and fixing the small head assembly with one side edge of the left outer plate 2.
As shown in fig. 2, the header sub-assembly 6 is placed on the right side of the left side outer panel 2 and welded to the right side thereof.
S3, placing the head steel casting 3 on the curved surface jig frame 1 in a side state, and welding and fixing the head steel casting with the other adjacent side edge of the left outer plate 2, the head small assembly 6 and each left longitudinal rib 5.
S4, sequentially fixing the segmented inner members on the left outer plate 2.
The segmented inner member comprises a platform plate 7, ribs 8 and a right longitudinal bone 9.
Specifically, the specific steps of sequentially fixing the segmented inner member to the left outer panel 2 are:
Vertically fixing a platform plate 7 on the upper end surface of the left outer plate 2, wherein the platform plate 7 is arranged along the length direction of the left outer plate 2 and is parallel to the left longitudinal frame 5;
A rib plate 8 is vertically fixed on the upper end surface of the left outer plate 2, and the rib plate 8 is arranged along the height direction of the left outer plate 2 and is vertical to the platform plate 7 and passes through each left longitudinal frame 5;
a plurality of right longitudinal ribs 9 are welded and fixed on the upper end of the rib plate 8, and the right longitudinal ribs 9 are in one-to-one correspondence with the left longitudinal ribs 5.
The welding fixation is also carried out at the contact position of the platform plate 7 and the right longitudinal frame 9 with the steel casting 3, and the welding mode mainly adopts the flat welding.
S5, the right outer plate 4 is scattered and stuck on the sectional inner member, and the welding groove of the right outer plate 4 is also deviated from the curved surface jig frame 1 (namely, the welding groove of the right outer plate faces upwards).
The right outer plate is welded and spliced outside the sections, and a flat welding mode is adopted.
The right outer plate 4 is fixed with the sectional internal components by spot welding, and the right outer plate 4 is fixed with the steel casting 3 by welding.
S6, the whole subsection is turned over to enable the right outer plate 4 to be attached to the curved-surface jig frame 1, and at the moment, the contact part between the right outer plate 4 and the subsection internal components is completely welded, wherein the welding comprises the welding between the right outer plate 4 and the right longitudinal rib 9, the welding between the right outer plate 4 and the rib plate 8 and the welding between the right outer plate 4 and the platform plate 7.
And finally, the rest bulk parts are completely installed, and thus, the whole section is completely assembled and welded.
Because the right-side outer plate 4 is attached to the curved surface jig frame 1 after the body is turned over by sections, the welding between the right-side outer plate 4 and the inner members of the sections is also flat welding, so that overhead welding operation is effectively avoided in the whole assembly process.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (7)
1. The installation method of the large steel casting at the head of the ship is characterized by comprising the following steps of:
S1, tiling a left outer plate on a curved jig frame matched with the line type of the left outer plate, and arranging a plurality of left longitudinal bones on the left outer plate according to a set interval;
s2, placing the small head assembly on a curved surface jig frame and welding and fixing the small head assembly with one side edge of the left outer plate;
S3, placing the side state of the head steel casting on a curved surface jig frame, and welding and fixing the head steel casting with the other adjacent side edge of the left outer plate, the head small assembly and each left longitudinal bone;
S4, sequentially welding and fixing the segmented internal components on the left outer plate;
S5, the right outer plate is scattered and stuck on the sectional inner member, the right outer plate and the sectional inner member are fixed by spot welding, and the right outer plate and the head steel casting are fixed by welding;
s6, turning over the whole section to enable the right side outer plate to be attached to the curved surface jig frame, and completely welding the contact part between the right side outer plate and the section inner member.
2. The method for installing a large steel casting on a ship' S head according to claim 1, wherein in step S1, the left side outer plate is laid flat on the curved jig with its weld groove facing to a side facing away from the curved jig.
3. The method of installing a large cast steel product on a vessel header according to claim 1, wherein the segmented inner member comprises a platform plate, a rib plate, and a right longitudinal rib;
in step S4, the specific steps of sequentially fixing the segmented inner member on the left outer plate are as follows:
The platform plate is vertically fixed on the left outer plate, is arranged along the length direction of the left outer plate and is parallel to the left longitudinal bone;
The rib plate is vertically fixed on the left outer plate, is arranged along the height direction of the left outer plate, is vertical to the platform plate and passes through each left longitudinal bone;
a plurality of right longitudinal bones are fixed at the upper ends of the rib plates by spot welding.
4. The method for installing a large steel casting on a ship's head according to claim 3, wherein the right longitudinal ribs are in one-to-one correspondence with the left longitudinal ribs.
5. The method for installing a large steel casting on a ship' S head according to claim 1, wherein in step S5, the weld groove is directed away from the curved jig when the right outer panel is scattered and attached to the segmented inner member.
6. The method for installing a large cast steel product for a ship' S bow according to claim 1, wherein the step S6 is performed by completely welding the contact portion between the right outer plate and the segmented inner member, including welding between the right outer plate and the right longitudinal rib, welding between the right outer plate and the rib plate, and welding between the right outer plate and the deck plate bracket.
7. The method of installing large-scale steel castings for a ship's head according to claim 1, wherein the welding between the left outer plate and the sectional inner member and the head steel castings is flush welding, and the welding between the right outer plate and the sectional inner member and the head steel castings is flush welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544822.2A CN114248884B (en) | 2021-12-16 | 2021-12-16 | Installation method of large steel casting at ship head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544822.2A CN114248884B (en) | 2021-12-16 | 2021-12-16 | Installation method of large steel casting at ship head |
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| Publication Number | Publication Date |
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| CN114248884A CN114248884A (en) | 2022-03-29 |
| CN114248884B true CN114248884B (en) | 2024-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111544822.2A Active CN114248884B (en) | 2021-12-16 | 2021-12-16 | Installation method of large steel casting at ship head |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115535180B (en) * | 2022-10-14 | 2024-06-11 | 沪东中华造船(集团)有限公司 | Longitudinal bone positioning and mounting method for curved surface segmented outer plate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908885A (en) * | 2015-06-30 | 2015-09-16 | 沪东中华造船(集团)有限公司 | Overall manufacture method for forecastle bulwark of ship |
| CN108177730A (en) * | 2017-12-25 | 2018-06-19 | 沪东中华造船(集团)有限公司 | A kind of integrated method of construction of topside segmentation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206410623U (en) * | 2016-12-16 | 2017-08-15 | 上海江南长兴造船有限责任公司 | It is a kind of to indulge the survey tool that bone is installed for ship hull plate |
| CN113148058B (en) * | 2021-04-29 | 2023-08-15 | 江苏扬子三井造船有限公司 | Process for installing and positioning double rudder sleeve and tail casting in stage of sectional construction |
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2021
- 2021-12-16 CN CN202111544822.2A patent/CN114248884B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908885A (en) * | 2015-06-30 | 2015-09-16 | 沪东中华造船(集团)有限公司 | Overall manufacture method for forecastle bulwark of ship |
| CN108177730A (en) * | 2017-12-25 | 2018-06-19 | 沪东中华造船(集团)有限公司 | A kind of integrated method of construction of topside segmentation |
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| CN114248884A (en) | 2022-03-29 |
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