CN114179999B - Quick positioning and mounting method for double-I-beam on cabin section of container ship - Google Patents
Quick positioning and mounting method for double-I-beam on cabin section of container ship Download PDFInfo
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- CN114179999B CN114179999B CN202111311882.XA CN202111311882A CN114179999B CN 114179999 B CN114179999 B CN 114179999B CN 202111311882 A CN202111311882 A CN 202111311882A CN 114179999 B CN114179999 B CN 114179999B
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000009434 installation Methods 0.000 claims abstract description 36
- 238000003466 welding Methods 0.000 claims description 23
- 238000010276 construction Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000012937 correction Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000013102 re-test Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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Classifications
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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
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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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
-
- 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
- B63B73/60—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by the use of specific tools or equipment; characterised by automation, e.g. use of robots
Abstract
The invention discloses a quick positioning and mounting method for double-I-beams on a cabin section of a container ship, which comprises the following steps: checking and constructing the square degree of the main deck in the cabin sectional splicing stage; drawing a central line of the position of the stringer in assembly and refuting to a non-component face; strictly constructing a 150M.K datum line of the bow position, and ensuring that the bow datum line and a central line form a right angle; checking the accuracy of the I-beam incoming goods; after the installation of the sectional members is completed, the installation position, the size and the precision of the I-beam are positioned at one time by using the total station. The method of the invention can rapidly position and install the I-beam in the stage of sectional assembly, thereby avoiding the defects of low precision and repeated correction, shortening the production period of the ship and improving the precision of the I-beam.
Description
Technical Field
The invention relates to a positioning and mounting method of double-I-beams on cabin sections during ship construction, in particular to a container ship construction.
Background
At present, a single I-beam on a cabin section on a small container ship can be controlled and inspected by using conventional inspection tools such as a measuring tape, a plumb bob, a level gauge and the like. However, as the model of container ships becomes larger and larger, the requirements on the accuracy of the installation of the I-beam become higher and higher, and the conventional accuracy inspection tool is not suitable for the installation of the I-beam.
For a large container, two I-beams are arranged on a cabin section of the large container, the requirements on the synchronization degree, the spacing, the end face degree and the installation precision of the two I-beams are extremely high during construction, and if the large container cannot be quickly installed and the precision reaches the standard once, the section construction period can be greatly restricted. Moreover, if the I-beam cannot reach the standard at one time, the correction difficulty and the labor waste are serious.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a rapid positioning and mounting method for double-I-beams on cabin sections of a container ship. The method of the invention uses brand new methods such as total stations and the like to position the I-beam at one time, thereby providing effective guarantee for the installation accuracy of the I-beam.
In order to achieve the above object, the present invention provides the following technical solutions:
a method for rapid positioning and installation of double i-beams on a nacelle section of a container ship, the method comprising the steps of:
firstly, checking the precision of the manufactured I-beam, confirming the straightness and the main dimension of the I-beam, checking whether the straightness is +/-2 mm and the main dimension is +/-3 mm, and returning to a factory for correction or correcting a site fire worker if the straightness is +/-2 mm and the main dimension is not satisfied;
secondly, checking the assembly precision of the cabin main board, controlling the installation precision of components in the cabin main board, checking the main scale and squareness of a main deck according to theoretical data in the main deck assembly stage, and carrying out the ocean punching mark of a datum line at the datum end of the drawing construction stage;
drawing an I-beam installation measurement test drawing, firstly finding out the three-dimensional theoretical position of the double I-beam, accurately determining the installation position by utilizing the installation structure assembly drawing of the I-beam, and meeting the relative position relation between the center line of the ship body and the bow datum line;
and fourthly, rapidly installing the I-beam and checking, in the installation stage of the I-beam, rapidly positioning the I-beam on site by using a total station, measuring a 150M.K datum line of the bow, measuring the port position of the I-beam, and enabling the difference value of the I-beam from the datum line to meet the precision requirement, namely + -2 mm, wherein after the I-beam is installed, the total station is utilized to retest management points in time in the welding process, the welding sequence is adjusted in real time, and the synchronization degree and the end face degree of the I-beam after the welding are ensured to be good.
In the first step, after two I-beams to be installed on the cabin section arrive, the I-beams are placed in a free state, the straightness and the main dimension of the I-beams are confirmed by using a level meter, so that the accuracy is within +/-2 mm of the straightness and +/-3 mm of the main dimension, and if the accuracy is out of tolerance, the I-beams need to be repaired in a factory or be adjusted by a fire worker.
In the second step, the method for quickly positioning and installing the double-I beam on the cabin section of the container ship takes the ship middle and the bow as datum lines, the constructed bow datum line and the ship center line are required to be standard 90 degrees, the right angle relation between the bow datum line and the ship center line is reconfirmed after the welding and installing of the components are finished, and the datum line is properly corrected when the angle square is poor, so that the right angle relation between the bow datum line and the ship center line is ensured.
For the rapid positioning and mounting method of the double I-beam on the cabin section of the container ship, in the third step, the three-dimensional theoretical position of the double I-beam is found by combining a design drawing with an ECO-BLOCK G3S software I-beam model.
In the fourth step, the method for quickly positioning and installing the double-I-beam on the cabin section of the container ship comprises the following steps:
1) Firstly, measuring the first and the last points of the center line of the ship body, and confirming a straight line;
2) Measuring the half width direction of two I-beams, placing real measurement points at intervals of 2 meters in the length direction of the I-beams, and checking the half width values Y1 and Y2 to ensure that the Y1 and Y2 values are as consistent as possible with a theoretical drawing, and the precision standard is +/-2 mm;
3) Checking the height value of the I-beam, namely the Z value of the height value, so that the Z value is consistent with a theoretical design drawing as much as possible, and the precision management standard is +/-2 mm;
4) And measuring a bow datum line, namely a 150M.K datum line of the bow, measuring the port position of the I-beam, and detecting that the difference value of the size of the bow datum line distance I Liang Duankou is X1, so that the X1 of the I-beam is consistent with the theoretical size of a drawing as much as possible, and the accuracy management standard is +/-2 mm.
For the rapid positioning and mounting method of the double I-beam on the cabin section of the container ship, after the I-beam is mounted, the total station is utilized to retest management points in the drawing in time in the welding process, and the welding sequence is adjusted in time when the total station is bad, so that the synchronization degree and the end face degree of the I-beam are good after the welding is finished.
Based on the technical scheme, the rapid positioning and mounting method for the double-I-beam on the cabin section of the container ship has the following technical effects through practical application:
1. when the quick positioning and mounting method for the double I-beams on the cabin section of the container ship is applied, the I-beams are quickly positioned and mounted in the section assembly stage, the defects of low precision and repeated correction are avoided, the production period of the ship is shortened, and the precision of the I-beams is improved.
2. In the rapid positioning and mounting method of the double-I-beam on the cabin section of the container ship, the square accuracy of a main deck is checked and constructed in the cabin section splicing stage, the center line of the position of a longitudinal girder in assembly is drawn and refuted to a non-component surface, the 150M.K datum line of the position of a bow is strictly constructed, and the right angle between the bow datum line and the center line of a ship body is ensured.
3. In the method, after the installation of the sectional member is completed, the I-beam is installed by using brand new methods such as a total station and the like to perform one-time positioning, so that effective guarantee is provided for the installation precision of the I-beam.
Drawings
FIG. 1 is a schematic view of the arrangement of the hull centerline on the main deck and the 150MK fiducial line of the bow in the method for quick positioning and mounting of double-i beams on the nacelle section of the container ship of the present invention.
Fig. 2 is a schematic top view of the i-beam installation in the method for rapid positioning and installation of double i-beams on a nacelle section of a container ship according to the invention.
Fig. 3 is a schematic side view of the installation of i-beams in a method for rapid positioning and installation of double i-beams on a nacelle section of a container ship according to the invention.
Fig. 4 is a schematic top view of the container ship after conversion of the i-beam installation datum line in the method for rapid positioning and installation of double i-beams on the cabin section.
Fig. 5 is a schematic side view of the container ship after conversion of the i-beam mounting reference line in the method for rapid positioning and mounting of double i-beams on a nacelle section.
Detailed Description
For a better understanding of the technical solution of the present invention, embodiments of the present invention are described in detail below with reference 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 invention relates to a rapid positioning and installing method for double-I-beam on cabin section of container ship, which comprises the following steps:
firstly, checking the precision of the manufactured I-beam, confirming the straightness and the main dimension of the I-beam, checking whether the straightness is +/-2 mm or not, and if the straightness is +/-3 mm, correcting the I-beam.
And secondly, checking the assembly precision of the cabin main board, controlling the installation precision of components in the cabin main board, checking the main scale and squareness of a main deck according to theoretical data in the main deck assembly stage, and carrying out the ocean punching marking of a datum line at the datum end in the drawing construction stage.
And thirdly, drawing an I-beam installation measurement test drawing, finding out the three-dimensional theoretical position of the double I-beam, and accurately determining the installation position by utilizing the installation structure assembly drawing of the I-beam so as to meet the relative position relation between the center line and the bow datum line.
And fourthly, rapidly installing the I-beam and checking, wherein in the installation stage of the I-beam, the total station is firstly utilized to rapidly position on site, then the stem datum line, namely the 150M.K datum line of the stem is measured, the port position of the I-beam is measured, the difference value of the I-beam from the stem datum line meets the precision requirement, namely +/-2 mm, after the I-beam is installed, the total station is utilized to retest management points in time in the welding process, and the welding sequence is adjusted in real time, so that the synchronization degree and the end face degree of the I-beam after the welding is finished are ensured to be good.
Example 1
The method for installing and checking the double-I-beam is applied to the cabin section of a large container ship of a certain model. The application process specifically comprises the following contents:
and 1, checking the mounting accuracy of the I-beam incoming and outgoing goods. After the I-beam arrives at the goods, the I-beam is placed in a free state, the straightness and the main scale of the I-beam are confirmed by using a level meter, the straightness is +/-2 mm, the main scale is +/-3 mm, and the precision is out of tolerance, so that factory return correction or fire work adjustment is required.
And 2, controlling and checking the splicing accuracy of the cabin main board and the installation of components.
As shown in fig. 1, in the stage of splicing the main deck 3, the main scale and squareness of the main deck 3 are checked according to theoretical data, and a bow 150MK datum line 1 is marked at the datum end of the drawing construction section. In the figure, the middle and the bow are taken as datum lines, so that the datum line 1 of the constructed bow 150MK and the center line 2 of the ship body are required to be at a standard 90 degrees. And (3) scribing the structure strictly according to the precision requirement standard, carrying out standardized construction operation according to the structural line, strictly controlling the welding process requirement, and reducing the influence of welding deformation on the segmentation precision. And after the member is welded, the right angle relation between the bow datum line and the datum line in the ship is reconfirmed, and when the angle square is poor, the datum line is properly corrected, so that the right angle relation between the bow 150MK datum line 1 and the center line 2 of the ship body is ensured.
And 3, drawing an I-beam installation measurement inspection drawing. As shown in fig. 2 and 3, the three-dimensional theoretical position of the double-i-beam is accurately found out through a design drawing and ECO-BLOCK G3S software, the mounting structure of the i-beam 5 is assembled through a mounting drawing, and the relative positional relationship between the mounting position of the i-beam 5 and the hull center line 2 and the bow 150MK datum line 1 can be accurately determined through a node diagram.
And 4, rapidly installing and checking the I-beam. In the installation stage of the I-beams 5, a total station is utilized to quickly locate on site, firstly, the head and tail two points of the center line 2 of the ship body are measured, a straight line is confirmed, the half width direction of the two I-beams 5 is measured, the placement of real measurement points is carried out every 2 meters in the length direction of the I-beams 5, as shown in fig. 4 and 5, the half width values Y1 and Y2 in the diagram 5 are checked, so that the Y1 and Y2 values are as consistent as possible with a theoretical drawing, the precision standard is +/-2 mm, the height value of the I-beams 5 is checked, such as the Z value in the diagram is checked, so that the Z value is as consistent as possible with the theoretical design drawing, and the precision management standard is +/-2 mm; secondly, measuring the 150M.K reference line 1 of the bow, measuring the port position of the I-beam 5, and detecting the difference value of the dimension of the reference line distance I-Liang Duankou as X1 in the figure, so that the X1 of the I-beam 5 is consistent with the theoretical dimension of the drawing as much as possible, and the accuracy management standard is +/-2 mm.
And after the installation of the I-beam 5 is completed, retesting is carried out on the management points in time by using the total station in the welding process, and the welding sequence is adjusted in time when the management points are bad, so that the synchronization degree and the end face degree of the I-beam 5 are good after the welding is completed.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The quick positioning and mounting method for the double-I-beam on the cabin section of the container ship is characterized by comprising the following steps of:
firstly, checking the precision of the manufactured I-beam, confirming the straightness and the main dimension of the I-beam, checking whether the straightness is +/-2 mm or not, and if the straightness is +/-3 mm, correcting the I-beam;
secondly, checking the assembly precision of the cabin main board, controlling the installation precision of components in the cabin main board, checking the main scale and squareness of a main deck according to theoretical data in the main deck assembly stage, and carrying out the ocean punching mark of a datum line at the datum end of the drawing construction stage;
drawing an I-beam installation measurement test drawing, firstly finding out the three-dimensional theoretical position of the double I-beam, accurately determining the installation position by utilizing the installation structure assembly drawing of the I-beam, and meeting the relative position relation of a 150M.K datum line from the center line of the ship body and the bow;
fourthly, rapidly installing the I-beam and checking, in the installation stage of the I-beam, rapidly positioning the I-beam on site by using a total station, measuring a 150M.K datum line of the bow, measuring the port position of the I-beam, enabling the difference value of the I-beam from the datum line to meet the precision requirement, namely + -2 mm, and after the I-beam is installed, re-measuring management points in time by using the total station in the welding process, and adjusting the welding sequence in real time to ensure the synchronization degree and the end face degree of the I-beam after the welding is finished; when the total station is used for quick positioning on site:
1) Firstly measuring the first and the last points of the center line of the ship body, and confirming a straight line;
2) Measuring the half width directions of two I-beams, placing real measuring points every 2 meters in the length direction of the I-beams, and checking the half width values Y1 and Y2 in the half width directions to ensure that the Y1 and Y2 values are as consistent as possible with a theoretical drawing, and the precision standard is +/-2 mm;
3) Checking the height value of the I-beam, namely the Z value of the height value, so that the Z value is consistent with a theoretical design drawing as much as possible, and the precision management standard is +/-2 mm;
4) And measuring a 150M.K reference line of the bow, and measuring the port position of the I-beam, wherein the difference value of the dimension of the detection reference line distance I-Liang Duankou is X1, so that the X1 of the I-beam is consistent with the theoretical dimension of the drawing as much as possible, and the accuracy management standard is +/-2 mm.
2. The method for rapid positioning and mounting of double i-beams on a nacelle section of a container ship according to claim 1, wherein in the first step, after two i-beams to be mounted on the nacelle section arrive, the i-beams are placed in a free state, the straightness and main dimensions of the i-beams are confirmed by a level meter, so that the accuracy is within +/-2 mm of the straightness, and within +/-3 mm of the main dimensions, and if the accuracy is out of tolerance, the i-beams need to be reworked or adjusted by a fire worker.
3. The method for rapid positioning and mounting of double i beams on a cabin section of a container ship according to claim 1, wherein in the second step, the 150m.k datum line of the bow of the construction should be standard 90 ° with respect to the center line of the hull with the middle and the bow as datum lines, and after the welding and mounting of the components are completed, the right angle relationship between the 150m.k datum line of the bow and the center line of the hull is reconfirmed, and the right angle relationship between the 150m.k datum line of the bow and the center line of the hull is ensured by properly correcting the datum line when the angle square is bad.
4. The method for rapid positioning and installation of double i-beams on nacelle sections of a container ship according to claim 1, wherein in said third step, finding the three-dimensional theoretical position of the double i-beams is accomplished by means of design drawings and using ECO-BLOCK G3S analysis software.
5. The method for quickly positioning and installing double I-beams on a cabin section of a container ship according to claim 1, wherein in the fourth step, after the installation of the I-beams is completed, retesting is performed by using a total station timely management point in the welding process, and when the welding sequence is bad, the welding sequence is timely adjusted, so that good synchronization and end face degree of the I-beams after the welding is completed are ensured.
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| CN114589547B (en) * | 2022-04-06 | 2022-11-22 | 广船国际有限公司 | Line drawing method for container foot opening |
| CN115071907A (en) * | 2022-07-06 | 2022-09-20 | 江南造船(集团)有限责任公司 | Construction method of thin deck section of ship, thin deck and PCTC ship |
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| 基于Backstepping的船舶航向自适应鲁棒非线性控制器设计;林永屹;杜佳璐;牛杰;;船舶工程(第01期);第28-31页 * |
| 赵李刚 ; 李学峰.散贴外板双壳分段制作反变形工艺值标准化的研究和实践.船舶标准化与质量.2020,第87-93页. * |
| 铝合金船体焊接变形及其控制措施;钟广军;毛申飞;;船舶与海洋工程(第05期);第77-83页 * |
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