CN101439754B

CN101439754B - Hull section non-allowance healing accuracy control process

Info

Publication number: CN101439754B
Application number: CN200810233972XA
Authority: CN
Inventors: 艾湖
Original assignee: JIANGDONG SHIPYARD OF CHINA CHANGJIANG NATIONAL SHIPPING GROUP
Current assignee: JIANGDONG SHIPYARD OF CHINA CHANGJIANG NATIONAL SHIPPING GROUP
Priority date: 2008-12-18
Filing date: 2008-12-18
Publication date: 2011-05-18
Anticipated expiration: 2028-12-18
Also published as: CN101439754A

Abstract

The invention provides a process for controlling hull segmentation non-surplus seaming precision, which comprises the following steps: at the beginning of building, setting each segment of a hull to be in the reverse building state, building an inner bottom plank at the lower part and a bottom board at the upper part; lining out a structural line on the inner bottom plank and drawing surplus cutting lines at two ends thereof simultaneously, and getting 200 millimeters inwards from two ends of a seaming opening as a cross checking line; building the segments of the hull, and turning over the segments of the hull after selection; after turning over the segments of the hull, taking the inner bottom plank as a horizontal plane to adjust levels of four angles, and controlling the planeness of the inner bottom plank in certain range as required; assigning a length direction checking line in the rib direction of the seaming openings at two ends; and punching holes to make marks; lining out a surplus cutting line and a cutting checking line of a segmental annular seaming opening simultaneously; performing cutting, and machining dioxygen divided edges on the adjacent planks of the seaming opening; and after all the segmental cuttings, building a slipway to perform the seaming. Through the non-surplus precision control, the processes of seaming, cutting and secondary seaming are saved, the building cycle of the whole hull is greatly shortened, the labor efficiency is improved, and the enterprise benefit is increased.

Description

Hull section non-allowance healing accuracy control process

Technical field:

The present invention relates to the boats and ships manufacture field, a kind of specifically hull section non-allowance healing accuracy control process.

Background technology:

Along with the fiery and scientific and technical develop rapidly of shipbuilding market, the every profession and trade technology is brought in constant renewal in, and the innovation and application of new process has improved production efficiency greatly, has shortened the engineering-built cycle.

Present domestic shipbuilding yard is at the German ton series boats and ships of building, and full ship is divided into more than 50 segmentation.The lifting capacity of crane in existing private shipbuilding yard is limited, and sectional turn-over rest and reorganization place is less; If adopt traditional build model, sectional construction is in the surplus state, will close up in advance when closing up, and carries out the surplus cutting again by measurement, data computation, and waste of material is big.Vexed storehouse production time is long during the surplus cutting, and labor operation intensity is big.Carry out secondary after the surplus cutting and close up, also will rest and reorganize in a large number after closing up.The whole process crane hook time is about 6-8 hour.It is long that segmentation place to be closed up takies the cycle.The containment subsequent segment is built, and makes the production cycle lengthening, and the performance of enterprises is low.Therefore plan proposes the hull section non-allowance healing accuracy control process of innovation, and precision control is carried out in segmentation in manufacture process, makes segmentation directly enter berth combination after building end, reduces building berth location mowing work capacity, and step lifting puts in place.The crane hook time was reduced to about 1.5 hours.Push forward accuracy control comprehensively, realization section non-allowance precision is closed up.

Summary of the invention:

For solving the problem that prior art exists, the invention provides a kind of hull section non-allowance healing accuracy control process, by the control of nothing left accuracy of measurement shortened in the whole hull construction cycle greatly, raise labour efficiency, increase the performance of enterprises.

The technical solution used in the present invention:

Hull section non-allowance healing accuracy control process may further comprise the steps:

(1), when beginning to build, hull respectively is segmented into the anti-state of making, bed board of the interior end is down, bottom plating is last; Bed board check off structure line marks two ends surplus line of cut simultaneously at the interior end, gets a segment distance and makes cross check line closing up a mouthful inward at both ends, stamps the ocean and dashes, and carries out the protections of sign and pad pasting;

(2), begin to build body section, make the back and use crane that body section is stood up;

(3), behind the ship hull sectional turn-over, be that horizontal surface is adjusted four jiaos of levels with bed board of the interior end;

(4), behind the ship hull sectional turn-over, bed board planeness of the interior end should be controlled in the certain limit, according to theoretical size, the actual precision of building of check if any deviation, is adjusted by theoretical size;

(5), be foundation with the body section theoretical size, at both ends closes up a mouthful rib position direction, surveys and marks length direction check line, stamps the ocean and dashes and carry out sign; Mark the belt mouthful surplus line of cut that closes up of segmentation simultaneously, go in ring in segmentation and close up the inside segment distance of mouthful surplus line of cut, mark and the belt mouthful cutting that the surplus line of cut the is parallel check line that closes up of segmentation;

(6), mark segmentation go in ring close up mouthful surplus line of cut and cutting check line line after, carry out the cutting of body section, and carry out the dioxy groove closing up on mouthful adjacent sheet material more than the theoretical size part, prepare welding.

(7), after all body sections all finish cutting more than theoretical size part, building berth upward in all body sections carryings, weld, close up.

Advantage of the present invention:

The present invention provides a kind of hull section non-allowance healing accuracy control process according to the own characteristic of domestic existing private shipbuilding enterprise.Precision control is carried out in segmentation in manufacture process, make segmentation directly enter berth combination after building end, reduces building berth location mowing work capacity, and step lifting puts in place, makes crane link up with the time and reduces significantly.Push forward accuracy control comprehensively, realization section non-allowance precision is closed up.By the control of nothing left accuracy of measurement shortened in the whole hull construction cycle greatly, raise labour efficiency, increase the performance of enterprises.

Description of drawings:

Fig. 1 is the body section scheme drawing;

Fig. 2 is bed board line of an interior end scheme drawing;

Fig. 3 is the segment folding scheme drawing.

The specific embodiment:

Referring to accompanying drawing 1-23;

Hull section non-allowance healing accuracy control process: may further comprise the steps:

(1), when beginning to build, hull respectively is segmented into the anti-state of making, bed board of the interior end is down, bottom plating is last; Mark two ends surplus line of cut 2 simultaneously at bed board check off structure line of the interior end 1, get 200mm and make cross check line closing up a mouthful inward at both ends, stamp the ocean and dash, carry out the protections of sign and pad pasting; Segmentation surplus line of cut 2 wouldn't cut, and remeasures after waiting to stand up to adjust the back cutting.The segmental structure clearance control is in 0-2mm; Produce distortion to reduce stress concentration;

(2), begin to build body section, the welding of segmental structure, should be in strict accordance with the relevant regulations of " welding process ", from about the segmentation mediad, the front and back symmetry program of welding simultaneously, before welding or in the welding process, should stop welding when finding steel plate, the deformation of member, dislocation, unfairness, weld after treating to proofread and correct again.Making the back uses crane that body section is stood up;

(3), behind the ship hull sectional turn-over, be that horizontal surface is adjusted four jiaos of levels with bed board of the interior end, can use extreme misery method or weight method;

(4), behind the ship hull sectional turn-over, bed board planeness of the interior end should be controlled at ± 3mm in, according to theoretical size, the actual precision of building of check if any deviation, should be adjusted by theoretical size;

(5), be foundation with body section theoretical size and case pin distance, at both ends closes up a mouthful rib position direction, surveys and marks length direction check line 3, stamps the ocean and dashes and carry out sign; Mark the belt mouthful surplus line of cut 4 that closes up of segmentation simultaneously, go in ring in segmentation and close up mouthful surplus line of cut 4 inside segment distances, mark and the belt mouthful cutting that the surplus line of cut the is parallel check line 5 that closes up of segmentation; Pre-determined positioning section (for example selecting the D5 section as positioning section) theoretical length is constant, to the little number of bow, length after the big number segment folding mouth polishing of stern, be theoretical length and subtract 4-6mm.Hull closes up gap greatly and is decided to be 8mm deviation ± 2mm, promptly per pass heal up the check linear dimension be 750 ± 2mm.

(6), mark segmentation go in ring close up mouthful surplus line of cut and cutting check line line after, carry out the cutting of body section, and carry out dioxy groove 7 closing up on mouthful adjacent sheet material 6 more than the theoretical size part, prepare welding.Close up mouthful tank top plate fusion face up, the outside plate fusion face inwardly, middle longitudinal gradient mouth is towards a left side, the longitudinal construction fusion face towards in.

(7), after all segmentations cutting, last building berth closes up.

Claims

1. hull section non-allowance healing accuracy control process is characterized in that: may further comprise the steps:

(5), be foundation with body section theoretical size and case pin distance, at both ends closes up a mouthful rib position direction, surveys and marks length direction check line, stamps the ocean and dashes and carry out sign; Mark the belt mouthful surplus line of cut that closes up of segmentation simultaneously, go in ring in segmentation and close up the inside segment distance of mouthful surplus line of cut, mark and the belt mouthful cutting that the surplus line of cut the is parallel check line that closes up of segmentation;

(6), mark segmentation go in ring close up mouthful surplus line of cut and cutting check line after, carry out the cutting of body section, and carry out the dioxy groove closing up on mouthful adjacent sheet material more than the theoretical size part, prepare welding;