CN-116552733-B - Positioning method for ship segmented head column steel castings

CN116552733BCN 116552733 BCN116552733 BCN 116552733BCN-116552733-B

Abstract

The application provides a positioning method of ship section head column steel castings, which is characterized in that data of two sections of head column steel castings of two sections are subjected to data matching through matching on-site actual installation data with theoretical data in a theoretical model, and deviation amount of data matching is adjusted, so that the alignment precision of the section total assembly stage and the alignment precision of head column steel castings on each section are ensured.

Inventors

DIAO LEILEI
WANG XUEQIANG
GAO JUNQIANG

Assignees

江南造船(集团)有限责任公司

Dates

Publication Date: 20260512
Application Date: 20230606

Claims (10)

1. The utility model provides a positioning method of boats and ships segmentation stem cast steel spare, segmentation includes first segmentation and second segmentation, wherein, first stem cast steel spare assemble on the first segmentation, second stem cast steel spare assemble on the second segmentation, its characterized in that includes: Preliminary positioning is carried out on the first head column steel casting on the first section; The method comprises the steps of obtaining coordinate data of a first subsection, matching the coordinate data of the first subsection with the coordinate data of the first subsection in a theoretical model, adjusting the positioning position of the first subsection according to a first matching standard, obtaining the coordinate data of the first stem steel, correspondingly adjusting the coordinate data of the first stem steel according to the adjusted coordinate data of the first subsection, determining the theoretical coordinate deviation amount of the adjusted first stem steel and the first stem steel in the theoretical model, and carrying out positioning adjustment on the first stem steel again according to the theoretical coordinate deviation amount; Preliminary positioning is carried out on the second head column steel casting on the second section; the second head column steel casting is positioned and adjusted, namely coordinate data of the second section is obtained, the coordinate data of the second section is matched with the coordinate data of the second section in the theoretical model, and the positioning position of the second section is adjusted according to a second matching standard; carrying out simulation on the first section and the second section to obtain the relative deviation of the first head column steel casting and the second head column steel casting; and adjusting the position of the second head column steel casting according to the relative deviation amount of the first head column steel casting and the second head column steel casting.
2. The positioning method as set forth in claim 1, wherein a first segment centerline extension direction of the first segment is defined as a head-to-tail direction, a first segment rib bit line extension direction of the first segment is defined as a width direction, and a first segment deck height extension direction of the first segment is defined as a height direction; a three-dimensional coordinate system is established, the width direction is set as the X direction, the head-tail direction is set as the Y direction, and the height direction is set as the Z direction.
3. The positioning method of claim 2, wherein, The coordinate data of the first segment includes: The data of the segment tail end surface measuring point of the first segment in the width direction is X11; the data of the segment center measuring point of the first segment in the head-tail direction is Y11; the segment level measurement point of the first segment is Z11 in the height direction.
4. The positioning method of claim 2, wherein, The coordinate data of the first head column steel casting comprises: The data of the first head column steel casting measuring point in the width direction is X12; The data of the first head column steel casting measuring point in the head-tail direction is Y12; The data of the measuring point of the first head column steel casting in the height direction is Z12.
5. The positioning method of claim 2, wherein the coordinate data of the first segment in the theoretical model comprises: the data of a segment tail end surface measuring point of a first segment in the theoretical model in the width direction is X1; the data of a segment center measuring point of a first segment in the theoretical model in the head-tail direction is Y1; The data of the segment level measurement point of the first segment in the theoretical model in the height direction is Z1.
6. The positioning method according to claim 2, wherein the first matching criterion is: the data deviation between the segment tail end surface measuring point of the first segment and the segment tail end surface measuring point of the first segment in the theoretical model in the width direction is less than or equal to +/-2 mm; The data deviation between the segment center measuring point of the first segment and the segment center measuring point of the first segment in the theoretical model in the head-tail direction is less than or equal to 1 mm; the data deviation between the sectional level measuring point of the first section and the sectional level measuring point of the first section in the theoretical model in the height direction is less than or equal to +/-3 mm.
7. The positioning method according to claim 1, wherein a second segment center line extending direction of the second segment is defined as a head-to-tail direction, a second segment rib bit line extending direction of the second segment is defined as a width direction, and a second segment deck height extending direction of the second segment is defined as a height direction; a three-dimensional coordinate system is established, the width direction is set as the X direction, the head-tail direction is set as the Y direction, and the height direction is set as the Z direction.
8. The positioning method of claim 7 wherein the coordinate data of the second segment comprises: the data of the segment tail end surface measuring point of the second segment in the width direction is X21; The data of the segment center measuring point of the second segment in the head-tail direction is Y21; the segment level measurement point of the second segment is Z21 in the height direction.
9. The positioning method of claim 7 wherein the coordinate data of the second segment in the theoretical model comprises: the data of the segment tail end surface measuring point of the second segment in the theoretical model in the width direction is X2; The data of a segment center measuring point of a second segment in the theoretical model in the head-tail direction is Y2; The data of the segment level measurement point of the second segment in the theoretical model in the height direction is Z2.
10. The positioning method of claim 7 wherein the second matching criteria is: the data deviation between the segment tail end surface measuring point of the second segment and the segment tail end surface measuring point of the second segment in the theoretical model in the width direction is less than or equal to +/-2 mm; the data deviation between the segment center measuring point of the second segment and the segment center measuring point of the second segment in the theoretical model in the head-tail direction is less than or equal to 1 mm; and the data deviation between the sectional level measuring point of the second section and the sectional level measuring point of the second section in the theoretical model in the height direction is less than or equal to +/-3 mm.

Description

Positioning method for ship segmented head column steel castings Technical Field The application relates to the technical field of ship construction, in particular to a positioning method of ship section head column steel castings. Background Currently, in the course of ship construction, some ship head column steel castings are divided into several sections and installed in different sections. And the two-dimensional positioning head column steel castings are carried out by taking the corresponding nearby hull structures as references, the sectional alignment precision is ensured when the upper and lower total assemblies of the sections are carried, and the problem of large head column alignment precision deviation is easy to occur. In the positioning method based on the segmented structure used in the prior art, structural errors of two segments are easily accumulated on butt joint of head column steel castings, so that head column dislocation is larger in the carrying stage, correction difficulty in the carrying stage of the steel castings is larger, and therefore segment carrying precision and carrying efficiency are affected. Disclosure of Invention The application aims to provide a positioning method for ship stem steel castings, and according to the positioning method, the carrying precision and carrying efficiency of ship segments and stems can be improved. In order to achieve the above purpose, the present application adopts the following technical scheme: the utility model provides a positioning method of boats and ships segmentation stem cast steel spare, a boats and ships segmentation stem cast steel spare's positioning method, segmentation includes first segmentation and second segmentation, wherein, first stem cast steel spare is assembled on first segmentation, second stem cast steel spare is assembled on the second segmentation, includes: positioning the first head column steel casting; the first head column steel casting is subjected to positioning adjustment, namely coordinate data of the first head column steel casting are obtained, the coordinate data of the first head column steel casting is compared with theoretical data in a theoretical model, and the first head column steel casting is subjected to positioning adjustment; the method comprises the steps of positioning a first section, positioning a second section, positioning and adjusting the second section, namely acquiring coordinate data of the second section, comparing the coordinate data of the second section with theoretical data in a theoretical model, positioning and adjusting the second section, and carrying out simulation on the first section and the second section to obtain the relative deviation of the first section and the second section; and adjusting the position of the second head column steel casting according to the relative deviation amount of the first head column steel casting and the second head column steel casting. In some embodiments, the first segment center line extending direction of the first segment is defined as a width direction, the first segment rib bit line extending direction of the first segment is a head-to-tail direction, the first segment deck height extending direction of the first segment is a height direction, a three-dimensional coordinate system is established, the width direction is set as an X direction, the head-to-tail direction is set as a Y direction, and the height direction is set as a Z direction. In some embodiments, the positioning adjustment of the first head column steel casting further comprises the step of obtaining first segment coordinate data, wherein the first segment coordinate data comprise X11 as measured point of a segment tail end face of the first segment in the width direction, Y11 as measured point of a segment center of the first segment in the head-tail direction and Z11 as measured point of a segment level of the first segment in the height direction. In some embodiments, positioning the first stem steel casting further comprises matching the coordinate data of the first segment with first theoretical data in a theoretical model, and adjusting the first segment according to a first matching criterion. In some embodiments, the coordinate data of the first head-column steel casting comprises that the data of the first head-column steel casting measuring point in the width direction is X12, the data of the first head-column steel casting measuring point in the head-tail direction is Y12, and the data of the first head-column steel casting measuring point in the height direction is Z12. In some embodiments, the first theoretical data comprises that the data of a segment tail end face measuring point of a first segment in a theoretical model in the width direction is X1, the data of a segment center measuring point of the first segment in the theoretical model in the head-tail direction is Y1, and the data of a segment horizontal measuring point of the first segment