CN111645825A - Method for normally assembling torsion boxes at gangway ladder position of ultra-large container ship - Google Patents
Method for normally assembling torsion boxes at gangway ladder position of ultra-large container ship Download PDFInfo
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- CN111645825A CN111645825A CN202010386542.2A CN202010386542A CN111645825A CN 111645825 A CN111645825 A CN 111645825A CN 202010386542 A CN202010386542 A CN 202010386542A CN 111645825 A CN111645825 A CN 111645825A
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
Abstract
The invention relates to a normal assembly method of a torsion box at the position of a gangway ladder of an ultra-large container ship, which comprises the following steps: s1, planning a torsion box normal assembly jig frame according to the structural form of the torsion box at the accommodation ladder position, wherein the torsion box normal assembly jig frame comprises a ground pier, a simple support and a bracket support distribution; s2, designing a bracket support; s3, mounting a bracket support in a segmentation stage; s4, normally placing the torsion box sections after turning over on an overall assembly jig frame, and adjusting the levelness and the verticality of the torsion box sections; s5, turning over and assembling the next torsion box section by taking the previous torsion box section as a reference, and assembling the next torsion box section by taking the previous torsion box section as a reference; s6, welding a total assembly welding line of the torsion box after the total section of the torsion box is positioned and restrained; and S7, normally carrying the torque box total section. By the method, the overturning, hoisting and carrying of the torsion box block are avoided, and carrying difficulty and risk are reduced.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a method for normally assembling a torsion box at a gangway ladder position of an ultra-large container ship.
Background
The gangway ladder of the ultra-large container ship is positioned at the position of the second deck and above the second deck of the ship, and the position above the second deck is the structure of the anti-torque box, so the anti-torque box at the position of the gangway ladder is different from the anti-torque box at other parts in structure form, and the position of the gangway ladder below forms an opening form; in addition, the structural form of the torsion boxes at the gangway position along the midship direction of the ship is different from that of the torsion boxes at the other parts, and structures such as a compartment, a platform, a longitudinal girder and the like exist; in the anti-torque box sections at other positions, the auxiliary hooks of the two cranes can be arranged on the inner longitudinal wall, so that the same width and height are ensured, the anti-torque box sections are convenient to turn over and carry, the auxiliary hook of one crane in the anti-torque box sections at the gangway position can be arranged at the end part of the platform plate, and the auxiliary hook of the other crane needs to be arranged on the inner longitudinal wall; during hoisting, the auxiliary hooks of the two cranes on the torsion box main section at the gangway ladder position are not at the same height and the same width, so that the synchronization is difficult to realize.
Disclosure of Invention
In order to solve the technical problems, eliminate the potential safety hazard existing in the horizontal assembly and hoisting of the torsion box at the gangway position of the traditional ultra-large container, and realize the rapid and accurate carrying of the torsion box at the gangway position, the invention provides a method for normally assembling the torsion box at the side position of the gangway of the ultra-large container, and the technical purpose of the invention is realized by the following technical scheme:
a method for normally assembling a torsion box at a gangway position of an ultra-large container ship comprises the following steps:
s1, planning a torsion box normal assembly jig frame according to the structural form of the torsion box at the accommodation ladder position, wherein the torsion box normal assembly jig frame comprises a ground pier, a simple support and a bracket support distribution;
s2, designing a bracket support, wherein the bracket support comprises a bracket supporting seat and a steel pipe;
s3, mounting a bracket supporting seat in a segmentation stage;
s4, normally placing the torsion box sections after turning over on an overall assembly jig frame, and adjusting the levelness and the verticality of the torsion box sections;
s5, turning over and assembling the next torsion box section by taking the previous torsion box reference section as a reference, and assembling the next torsion box section by taking the previous torsion box section as a reference;
s6, welding a total assembly welding line of the torsion box after the total section of the torsion box is positioned and restrained;
and S7, normally carrying the torque box total section.
Further, in S1, marking a waterline and a longitudinal section on the general assembly platform; the ground pier is arranged below the cross structure at the lower end of the torsion box section, and is simply supported on a ribbed plate structure arranged at the opening position at the lower end of the torsion box section.
Further, in S2, the bracket support includes a bottom plate, a main plate and a toggle plate, the main plate is vertically fixed on the bottom plate, and the toggle plate is vertically connected and fixed with the main plate and the bottom plate.
Further, in S3, the bracket support is mounted at a height corresponding to the lowest one of the profiles of the torsion box section.
Further, in S4, arranging a pier, a simple support and a bracket support on the total assembly platform, placing a hydraulic oil cylinder between the bracket support seat and the steel pipe, and adjusting the height of the torsion box section according to the installation accuracy requirement.
Furthermore, the simple support exceeds the height of 2.5m, and a direction stabilizing frame needs to be installed.
Further, in S5, after turning over, the next torsion box segment is placed on the total assembly jig frame, and after the height is adjusted by using a ground pier and a hydraulic oil cylinder, the next torsion box segment is welded with the previous torsion box segment in a restraining manner; subsequent torque box sections are each referenced to the previous torque box section for installation.
Further, when the width of the lower opening of the torsion box section is smaller than or equal to that of the upper opening, an inclined strut is arranged on one side of the torsion box section and connected to a rib plate of the torsion box section.
Furthermore, after the torsion box section is in constraint welding with the previous torsion box section, the height of the torsion box section is adjusted according to the installation precision requirement.
The invention has the beneficial effects that:
1. according to the invention, the normal assembly jig frame of the torsion box at the gangway ladder position is formed through the ground pier, the simple support and the bracket support, so that a precondition foundation is provided for the normal assembly of the torsion box;
2. the anti-torsion box block is prevented from turning over, potential safety hazards caused by the fact that two cranes are not synchronous are eliminated, adjusting time is saved, and rapid carrying is achieved;
3. the notch at the lower part of the torsion box section is filled through simple support, so that the torsion box section is prevented from toppling;
4. the bracket support is used as an acting point of the hydraulic oil cylinder and is used for realizing the adjustment of the total assembly precision together with the ground pier, so that the precision is ensured to meet the requirement;
5. the simple support and the bracket support act together, so that the deformation of the thin plate at the lower part of the torsion box is avoided;
6. the safety after the hook is loosened is ensured by constraint welding and a channel steel inclined strut in the process of assembling the torsion box sections.
Drawings
Fig. 1 is a normal general assembly diagram of a torsion box at a gangway position of an ultra-large container ship according to the invention.
FIG. 2 is a schematic view of a normal assembly jig of the torque box of the present invention.
Fig. 3 is a schematic view of the simple support installation of the present invention.
Fig. 4 is a schematic view of the installation of the channel steel diagonal brace in the invention.
FIG. 5 is a schematic view of the bracket support of the present invention.
FIG. 6 is a schematic view of the bracket support and the reinforcing plate according to the present invention.
FIG. 7 is a schematic view of the use of the direction stabilizer of the present invention.
In the figure, 1, the first torsion box section; 2. a second torsion box section; 3. a third torsion box section; 4. a torsion box block; 5. a ground pier; 6. simple support; 7. a bracket support; 8. restraining the welding seam; 9. a segmented seam line; 10. a main board; 11. a base plate; 12. a toggle plate; 13. reinforcing rib plates; 14. channel steel diagonal bracing; 15. bracket supporting seat.
Detailed Description
The technical solution of the present invention is further explained below with reference to specific embodiments:
a method for normally assembling a torsion box at a gangway position of an ultra-large container ship comprises the following steps:
s1, planning a jig frame with normal assembly: because the lower openings of the torsion boxes at the position of the ship gangway ladder of the torsion box of the ultra-large container ship are not level and the plate thickness is small, a normal assembly jig frame is planned according to the structural form of the torsion boxes at the position of the ship gangway ladder of the ultra-large container ship, a ground pier 5, a simple support 6 and a bracket support 7 are required to be used, the ground pier 5, the simple support 6 and the bracket support 7 are distributed as shown in figure 2, and a waterline, a longitudinal section line and a sectional joint line 9 are marked on an assembly platform; the ground pier 5 is arranged below the crisscross structure at the lower end of the torsion box section, and the simple support 6 is arranged at the rib plate structure at the opening position at the lower end of the torsion box section, as shown in fig. 3.
S2, designing a bracket support 7, wherein the bracket support 7 comprises a bracket support seat 15 and a steel pipe; as shown in fig. 5, the bracket support 15 includes a main plate 10, a bottom plate 11, and two brackets 12, the main plate 10 is vertically fixed on the upper end of the bottom plate 11, the two brackets 12 are respectively disposed on two sides of the main plate 10, and the brackets 12 are vertically fixed on the main plate 10 and the bottom plate 11; further, the bracket supporting seat 15 and the corresponding reinforcing rib plate 13 are respectively modeled, sleeved, cut and manufactured by combining the line type of the mounting position of the bracket supporting seat 15.
S3, mounting a bracket supporting seat 15 in a segmented stage: in the process of constructing the torsion box section, a bracket supporting seat 15 is installed according to a bracket supporting 7 layout drawing, the bracket supporting seat 15 is installed at a height position corresponding to a section bar at the lowest part of the torsion box section, the bracket supporting seat 15 without reinforcement on the reverse side of the torsion box section is required to be welded with a reinforcing rib plate 13 on the reverse side of the torsion box at the installation position of the bracket supporting seat 15, the reinforcing rib plate is a strip-shaped steel plate, and the installation is shown in fig. 6.
S4, as shown in figure 1, turning over a first torsion box section 1 for assembly, normally placing the first torsion box section 1 on an assembly jig frame after turning over for 90 degrees by using a crane, adjusting the levelness and verticality of the first torsion box section 1, arranging a ground pier 5, a simple support 6 and a bracket support 7 on an assembly platform, placing a hydraulic oil cylinder between a bracket support seat 15 and a steel pipe, and adjusting the height and levelness of the torsion box section as required to meet the requirement of installation accuracy; when arranging simple and easy support 6, if the height of simple and easy support surpasss 2.5m, need install the steady frame, to simply supporting 6 steady, steady frame is whole to be the terrace with edge type, and the lower extreme that simply supports 6 inserts in the steady frame, avoids simply supporting 6 to take place the slope, as shown in figure 7.
S5, turning over and hoisting a second torsion box section 2 by taking the first torsion box section 1 as a reference section, turning over the second torsion box section 2 by 90 degrees by using a crane, hoisting the second torsion box section 2 to an overall assembly jig frame, performing constrained welding between the second torsion box section 2 and the first torsion box section 1, wherein a constrained welding seam 8 is shown in figure 1, constraining a crane after welding to loose a hook, and adjusting the installation accuracy of the second torsion box section 2 by using a ground pier 5 and a hydraulic oil cylinder; similarly, the third torsion box section 3 is lifted to the total assembly jig frame after turning over the third torsion box section 3 by 90 degrees by using a crane with the second torsion box section 2 as a reference, a crane hook is restrained between the third torsion box section 3 and the second torsion box section 2 after welding, and the installation precision of the third torsion box section 3 is adjusted by using a ground pier 5 and a hydraulic oil cylinder; because the lower opening and the upper opening of the third torsion resistant box section 3 are equal in width and relatively narrow, a channel steel inclined strut 14 is needed before hook loosening, and the channel steel inclined strut 14 is arranged at a solid rib plate of the torsion resistant box section.
And S6, welding the assembly welding line after all the torsion box sections are sequentially carried on the assembly jig frame and the installation accuracy of all the torsion box sections meets the requirement.
S7, normal carrying is carried out by the torsion box main section in a flat mode, the torsion box main section does not need to be turned over, and carrying difficulty and risk of the torsion box section at the gangway ladder position are reduced.
The present invention is further explained and not limited by the embodiments, and those skilled in the art can make various modifications as necessary after reading the present specification, but all the embodiments are protected by the patent law within the scope of the claims.
Claims (9)
1. A method for normally assembling a torsion box at a gangway position of an ultra-large container ship is characterized by comprising the following steps:
s1, planning a torsion box normal assembly jig frame according to the structural form of the torsion box at the accommodation ladder position, wherein the torsion box normal assembly jig frame comprises a ground pier, a simple support and a bracket support distribution;
s2, designing a bracket support, wherein the bracket support comprises a bracket supporting seat and a steel pipe;
s3, mounting a bracket supporting seat in a segmentation stage;
s4, normally placing the torsion box sections after turning over on an overall assembly jig frame, and adjusting the levelness and the verticality of the torsion box sections;
s5, turning over and assembling the next torsion box section by taking the previous torsion box reference section as a reference, and assembling the next torsion box section by taking the previous torsion box section as a reference;
s6, welding a total assembly welding line of the torsion box after the total section of the torsion box is positioned and restrained;
and S7, normally carrying the torque box total section.
2. The method for assembling the torsion box in the gangway position of the ultra-large container ship normally according to the claim 1, wherein in the step S1, a waterline and a longitudinal section line are marked on an assembling platform; the ground pier is arranged below the cross structure at the lower end of the torsion box section, and the simple support is arranged at a ribbed plate structure at the opening position at the lower end of the torsion box section.
3. The method for assembling the torsion box in the position of the gangway of the ultra-large container ship in the normal state as claimed in claim 1, wherein in the step S2, the bracket supporting seat comprises a bottom plate, a main plate and a toggle plate, the main plate is vertically fixed on the bottom plate, and the toggle plate is vertically connected and fixed with the main plate and the bottom plate.
4. The method for assembling the torsion box in the position of the gangway of the ultra-large container ship in the normal way as claimed in claim 1, wherein in the step S3, the bracket supporting seat is arranged at the height position corresponding to the lowest section bar of the torsion box section.
5. The method for assembling the torsion box in the position of the gangway ladder of the ultra-large container ship in the normal state according to the claim 1, wherein in the step S4, a pier, a simple support and a bracket support are arranged on an assembling platform, a hydraulic oil cylinder is arranged between a bracket support seat and a steel pipe, and the height of the torsion box section is adjusted according to the installation precision requirement.
6. The method for assembling the torsion box in the gangway position of the ultra-large container ship normally according to claim 5, wherein the simple support exceeds the height of 2.5m, and a steering frame is required to be installed.
7. The method for assembling the torsion boxes normally at the position of the gangway ladder of the ultra-large container ship according to claim 1, wherein in the step S5, the next torsion box segment is turned over and then is placed on an assembling jig frame, and is welded with the previous torsion box segment in a restraining manner after the height of the next torsion box segment is adjusted by using a pier and a hydraulic oil cylinder; subsequent torque box sections are each referenced to the previous torque box section for installation.
8. The method for assembling the torque box normally at the gangway position of the ultra-large container ship as claimed in claim 7, wherein when the width of the lower opening of the torque box section is less than or equal to the width of the upper opening, a diagonal brace is arranged at one side of the torque box section, and the diagonal brace is connected at a rib plate of the torque box section.
9. The method as claimed in claim 7, wherein the height of the torsion box section is adjusted according to the installation accuracy requirement after the torsion box section is welded to the previous torsion box section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010386542.2A CN111645825B (en) | 2020-05-09 | 2020-05-09 | Method for normally assembling torsion boxes at gangway ladder position of ultra-large container ship |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010386542.2A CN111645825B (en) | 2020-05-09 | 2020-05-09 | Method for normally assembling torsion boxes at gangway ladder position of ultra-large container ship |
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| CN111645825B CN111645825B (en) | 2022-04-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113998073A (en) * | 2021-11-30 | 2022-02-01 | 广州黄船海洋工程有限公司 | Integrated installation method of longitudinal hatch coaming and torsion box of container |
| CN114802642A (en) * | 2022-04-08 | 2022-07-29 | 江南造船(集团)有限责任公司 | Construction method of container ship torsion box section and container ship |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113998073A (en) * | 2021-11-30 | 2022-02-01 | 广州黄船海洋工程有限公司 | Integrated installation method of longitudinal hatch coaming and torsion box of container |
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| CN111645825B (en) | 2022-04-05 |
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