CN115502947B - Positioning and scribing method for short pipe beside ship board - Google Patents
Positioning and scribing method for short pipe beside ship board Download PDFInfo
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- CN115502947B CN115502947B CN202211200479.4A CN202211200479A CN115502947B CN 115502947 B CN115502947 B CN 115502947B CN 202211200479 A CN202211200479 A CN 202211200479A CN 115502947 B CN115502947 B CN 115502947B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 47
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H7/00—Marking-out or setting-out work
- B25H7/04—Devices, e.g. scribers, for marking
- B25H7/045—Devices, e.g. scribers, for marking characterised by constructional details of the marking elements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a method for positioning and scribing a side short pipe of a ship. According to the invention, the installation position of the side short pipe is determined by measuring the height and the horizontal size of the side short pipe, the flat-bulb steel and the rib plate, so that the difficulty in measuring the installation position of the side short pipe on the hull outer plate is reduced, the installation precision and the installation efficiency of the side short pipe are improved, and the construction period is shortened.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a method for positioning and scribing a short pipe beside a ship.
Background
The side short pipe is an important component part of a ship system, and the main functions comprise: the water draining device comprises a deck water draining port, a cooling seawater draining port, a boiler blow-down draining port, a bilge oil sewage draining port, a domestic sewage treatment device draining port, a bilge draining port, a ballast water draining port, a fire water draining port and the like. The side short pipes are generally distributed at outer plates on two sides of the ship along the ship length direction, the height direction is respectively arranged above and below the waterline according to the respective functions, the beauty is considered, and the side short pipes with the same functions and adjacent areas are arranged at the same horizontal height as much as possible during design.
The installation of the ship side short pipe is usually required to be subjected to a series of steps of positioning, scribing, perforating, positioning welding, double-sided continuous welding, reinforcing plate welding, outer plate welding seam flaw detection, short pipe tightness, cutting and polishing of the redundant parts outside the ship, zinc supplementing and coating of the electric welding damaged part and the like; the positioning and scribing are the source and the key of the whole process, and the installation accuracy and quality of the side short pipe are determined. The overlarge positioning deviation can influence the overall appearance, so that the side short pipe cannot be connected with the inner pipe of the ship or even interfere with other objects, and once the situation occurs, repositioning is required, and as the specification does not allow the hole repairing of the outer plate, only the plate can be replaced, and the cost is high, especially the position with the outer plate having a large line type is high; the deviation of scribing can cause the out-of-tolerance and uneven weld gaps between the side short pipe and the outer plate, thereby affecting the weld quality and causing the follow-up reworking caused by unqualified weld flaw detection; the three-dimensional model of the ship body is built through the SPD system, the SPD system takes the ship product data model as a center, adopts a regular driving mode to carry out three-dimensional design, has complete topological relation and process design information among the models, and can meet the requirements of professional three-dimensional full-digital design of ship totality, structure, wind pipes, electric, iron outfitting, inner outfitting, outer outfitting, coating and the like; by using the software, the three-dimensional rate of the ship model reaches 100%, and the integrity of the ship model reaches more than 98%. Based on the three-dimensional model, the ship product performance, the structural strength, the process rationality and the manufacturing feasibility can be analyzed, and a required two-dimensional drawing and various summary forms can be generated for site construction.
The traditional positioning and scribing method of the side short pipe is to position the side short pipe according to the height of the side short pipe marked by a drawing and the rib position size along the ship length direction, then to scribe a circle by taking the positioning point as the center of a circle and adding 2mm of the radius of the pipe on the outer plate, and to repair and cut the pipe on the basis until the pipe can be completely inserted into the hole during subsequent hole opening. Since the height dimension marked by the drawing is the height from the base line of the ship body, the height is required to be converted into a height value from the corresponding deck in actual operation. For the position with larger line type of the outer plate, the height measurement difficulty is larger, 3 people are required to cooperate with angle steel and a level bar to horizontally extend the height from the joint of the deck and the outer plate to the outer plate, wherein 1 person holds the angle steel by hand and observes the level bar, 1 person measures the height of the angle steel to the deck, and the rest 1 person marks the position at the intersection of the angle steel and the outer plate by using a marking pen.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a method for positioning and scribing the side short pipe of a ship.
In order to achieve the above object, the present invention provides the following technical solutions:
A method for positioning and scribing a side short pipe of a ship, wherein the side short pipe is arranged on an outer plate of the ship, and the method specifically comprises the following steps:
Calculating the size of a side short pipe, obtaining a three-dimensional model of a ship body, obtaining the horizontal size and the height size of the side short pipe on an outer plate in the three-dimensional model of the ship body according to the installation position of the side short pipe on the outer plate of the ship body, and determining the specific installation position of the side short pipe on the outer plate;
Secondly, projecting the end face of the side short pipe on the installation position of the side short pipe on the outer plate according to the three-dimensional model of the ship body obtained in the first step to obtain an elliptical intersection line; manufacturing a scribing template on the template according to the elliptic intersecting line;
Thirdly, determining the mounting position of the side short pipe on the outer plate according to the specific mounting position of the side short pipe on the outer plate determined in the first step, placing a scribing template on the side short pipe at the mounting position of the outer plate of the hull, scribing an elliptical intersecting line, and uniformly knocking out a sample on the intersecting line;
Fourthly, after the ellipse intersecting line on the hull plate is marked, perforating the hull plate along the outline of the ellipse intersecting line, and polishing the perforating position;
Fifthly, after the outer plate is perforated and polished to smooth, installing the corresponding side short pipe in the outer plate perforated, connecting and fixing the side short pipe with ribs on two sides of the side short pipe through a reinforcing plate, and welding and fixing the joint of the side short pipe and the outer plate perforated;
Sixthly, after the welding and fixing of the side short pipe and the outer plate through the open holes, carrying out ultrasonic flaw detection on the welding seam of the side short pipe and the outer plate, carrying out zinc supplementing treatment on the damaged part of the welding seam, and carrying out tightness test on the side short pipe after flaw detection is completed;
seventh, after the tightness test is finished, cutting and polishing the side short pipe part positioned outside the board, and after the cutting is finished, coating the welding part of the side short pipe, so as to finish positioning, scribing and installing the side short pipe.
The three-dimensional model of the ship body in the first step is obtained by modeling an SPD system, wherein the three-dimensional model of the ship body comprises a side short pipe which is arranged at a specific installation position of a ship body outer plate, and the horizontal dimension of the side short pipe on the outer plate in the three-dimensional model of the ship body is the horizontal dimension between a rib closest to the center line of the side short pipe and the side short pipe.
The specific steps of acquiring the height dimension of the side short pipe on the outer plate in the three-dimensional model of the ship body in the first step are as follows: and (3) intercepting a cross-sectional view of a corresponding rib position of the installation position of the side short pipe in the three-dimensional model of the ship body, and measuring the height dimension between the closest flat-bulb steels below the side short pipe along the line type of the outer plate of the ship body from the installation position of the side short pipe.
The scribing template in the second step comprises the following specific steps: measuring the major axis and the minor axis of the elliptical intersecting line according to the elliptical intersecting line obtained from the three-dimensional model of the ship body, drawing the major axis and the minor axis on the template according to the measured major axis and minor axis of the elliptical intersecting line, and connecting the two ends of the major axis and the minor axis through a smooth curve to obtain the elliptical intersecting line, thereby completing the manufacture of the scribing template; the long axis and the short axis are perpendicular to each other, and the intersection point of the long axis and the short axis is an ellipse center point.
The mounting position of the side short pipe on the hull plate in the third step is specifically determined as follows: according to the horizontal dimension and the height dimension of the side short pipe obtained in the first step, an operator measures and determines the installation center point of the side short pipe on the outer plate; and then the elliptic center point on the scribing sample plate is overlapped with the installation center point of the side short pipe, and an elliptic intersecting line on the hull outer plate is scribed along the elliptic intersecting line on the scribing sample plate.
The concrete steps of the fifth step that the reinforcing plate is fixedly connected with the ribs on the two sides of the side short pipe are as follows:
S1, mounting a side short pipe at an outer plate opening, mounting a plurality of fixed support plates on the side surface of the side short pipe, measuring the distance between the fixed support plates and ribs on two sides of the side short pipe, and manufacturing an adjustable support plate according to the measured distance between the fixed support plates and the ribs on two sides of the side short pipe;
s2, after the adjustable support plate is manufactured, the adjustable support plate is respectively connected and fixed with the rib and the corresponding fixed support plate;
S3, after the installation of the adjustable supporting plate is completed, the connection and fixation of the reinforcing plate and the ribs on the two sides of the side short pipe are completed.
The reinforcing plate comprises a fixed support plate and an adjustable support plate, wherein three fixed support plates are welded on the side face of the side short pipe, each fixed support plate is connected and fixed with ribs through the adjustable support plate, when the distance between the fixed support plate and the ribs on the two sides of the side short pipe is measured, the distance between each fixed support plate and the nearest ribs is measured, and meanwhile the distance between each fixed support plate and the nearest ribs is measured along the length direction of the fixed support plate.
The specific steps of the tightness test of the side short pipe in the sixth step are as follows: after the installation of the side short pipe is completed, a connecting valve on one end of the side short pipe is closed, the other end of the side short pipe is sealed, and then the side short pipe is inflated for tightness test, so that the tightness test of the side short pipe is completed.
And in the seventh step, when the outboard side short pipe part is cut, the root of the outboard side short pipe is reserved for 10mm, all the rest parts of the outboard side short pipe are cut, and after the cutting and polishing are finished, the cutting and welding parts are coated.
Based on the technical scheme, the splicing method of the steel plates with different thicknesses has the following technical advantages through practical application:
1. according to the method for positioning and scribing the ship side short pipe, the installation position of the side short pipe is determined by measuring the height and the horizontal size of the side short pipe, the flat-bulb steel and the rib plate, so that the difficulty in measuring the installation position of the side short pipe on the hull outer plate is reduced, the installation precision and the installation efficiency of the side short pipe are improved, and the construction period is shortened.
2. According to the method for positioning and scribing the ship side short pipe, the distance between the side short pipe and the nearest flat-bulb steel below is measured to be the height size instead of the height between the side short pipe and the ship body base line, so that the problem that the height between the side short pipe and the ship body base line is required to be converted into the height value from the corresponding deck for measurement is avoided, the measuring difficulty of the height size of the side short pipe is reduced, and the measuring precision of the height size of the side short pipe is improved.
3. According to the method for positioning and scribing the ship side short pipe, the side short pipe is fixedly connected with the ribs on the two sides through the reinforcing plate, so that the installation stability of the side short pipe is improved.
Drawings
FIG. 1 is a schematic view of the mounting location of a side rail in a method of locating and scoring a side rail of a ship according to the present invention.
Fig. 2 is a schematic view of the measurement of the height dimension of the side pipe in the method for positioning and scribing the side pipe of the ship according to the invention.
Fig. 3 is a schematic view of the horizontal dimension measurement of the side pipe in the method for positioning and scribing the side pipe of the ship according to the invention.
Fig. 4 is a front view of a stiffener installation in a method of locating and scoring a side pipe of a ship according to the present invention.
FIG. 5 is a side view of a stiffener installation in a method of locating and scoring a side rail of a marine vessel according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by way of specific examples shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1-5, the invention belongs to a method for positioning and scribing a ship side short pipe, wherein the side short pipe 3 is arranged on a ship outer plate 1, and the method specifically comprises the following steps:
Firstly, calculating the size of a side short pipe 3, obtaining a three-dimensional model of a ship body, obtaining the horizontal size 9 and the height size 7 of the side short pipe 3 on the outer plate 1 in the three-dimensional model of the ship body according to the installation position of the side short pipe 3 on the outer plate 1 of the ship body, and determining the specific installation position of the side short pipe 3 on the outer plate 1; the installation position of the side short pipe 3 is determined by measuring the height 7 and the horizontal 9 of the side short pipe 3, the flat-bulb steel 2 and the rib plate, so that the difficulty in measuring the installation position of the side short pipe 3 on the hull outer plate 1 is reduced, the installation precision and the installation efficiency of the side short pipe 3 are improved, and the construction period is shortened.
Secondly, projecting the end surface of the side short pipe 3 on the installation position of the side short pipe 3 on the outer plate 1 according to the three-dimensional model of the ship body obtained in the first step to obtain an elliptical intersection line; manufacturing a scribing template on the template according to the elliptic intersecting line;
thirdly, determining the mounting position of the side short pipe 3 on the outer plate 1 according to the specific mounting position of the side short pipe 3 on the outer plate 1 of the ship body, placing a scribing template on the side short pipe 3 to mark an elliptical intersecting line at the mounting position of the outer plate 1 of the ship body, and uniformly knocking out and stamping on the intersecting line;
Fourthly, after the ellipse intersecting line on the hull plate 1 is marked, perforating the hull plate 1 along the outline of the ellipse intersecting line, and polishing the perforation;
Fifthly, after the outer plate 1 is perforated and polished to smooth, the corresponding side short pipe 3 is installed in the perforated outer plate 1, the side short pipe 3 is fixedly connected with ribs 6 on two sides of the side short pipe 3 through a reinforcing plate, and the joint of the side short pipe 3 and the perforated outer plate 1 is fixedly welded;
Sixthly, after the perforating welding and fixing of the side short pipe 3 and the outer plate 1 are finished, carrying out ultrasonic flaw detection on the welding seam of the side short pipe 3 and the outer plate 1, carrying out zinc supplementing treatment on the damaged part of the welding seam, and after flaw detection is finished, carrying out tightness test on the side short pipe 3;
Seventh, after the tightness test is completed, cutting and polishing the part of the side short pipe 3 positioned outside the board, and after the cutting is completed, coating the welding part of the side short pipe 3, thus completing the positioning, scribing and mounting of the side short pipe 3.
The three-dimensional model of the ship body in the first step is obtained by modeling an SPD system, wherein the three-dimensional model of the ship body comprises a side short pipe 3 which is arranged at a specific installation position of the ship body outer plate 1, and the horizontal dimension 9 of the side short pipe 3 on the outer plate 1 in the three-dimensional model of the ship body is the horizontal dimension 9 between the rib 6 closest to the center line 8 of the side short pipe and the side short pipe 3.
The specific steps of acquiring the height dimension 7 of the side short pipe 3 on the outer plate 1 in the three-dimensional model of the ship body in the first step are as follows: a cross section view of a corresponding rib position of the installation position of the side short pipe 3 in the three-dimensional model of the ship body is taken, and the height 7 between the closest flat-bulb steels 2 below the side short pipe is measured, wherein the height 7 is measured from the installation position of the side short pipe 3 along the line shape of the ship body outer plate 1; the distance between the side short pipe 3 and the nearest flat-bulb steel 2 below is measured to be the height 7 instead of the height between the side short pipe 3 and the hull base line, so that the problem that the height between the side short pipe 3 and the hull base line is converted into a height value from a corresponding deck to be measured is avoided, the difficulty in measuring the height 7 of the side short pipe 3 is reduced, and the measuring precision of the height 7 of the side short pipe 3 is improved.
The scribing template in the second step comprises the following specific steps: measuring the major axis and the minor axis of the elliptical intersecting line according to the elliptical intersecting line obtained from the three-dimensional model of the ship body, drawing the major axis and the minor axis on the template according to the measured major axis and minor axis of the elliptical intersecting line, and connecting the two ends of the major axis and the minor axis through a smooth curve to obtain the elliptical intersecting line, thereby completing the manufacture of the scribing template; the long axis and the short axis are perpendicular to each other, and the intersection point of the long axis and the short axis is an ellipse center point.
The third step is to determine the installation position of the side short pipe 3 on the hull outer plate 1 specifically as follows: according to the horizontal dimension 9 and the height dimension 7 of the side short pipe 3 obtained in the first step, an operator measures and determines the installation center point of the side short pipe 3 on the outer plate 1; then, overlapping the elliptical center point on the scribing template with the installation center point of the side short pipe 3, and scribing an elliptical intersection line on the hull outer plate 1 along the elliptical intersection line on the scribing template; the scribing template is manufactured, so that the size and the shape of the opening of the side short pipe 3 at the installation position of the hull external plate 1 are determined, and the efficiency of determining the position and the shape of the opening is improved.
The concrete steps of connecting and fixing the reinforcing plate and the ribs 6 on the two sides of the side short pipe 3 in the fifth step are as follows:
s1, mounting a side short pipe 3 at an opening of an outer plate 1, mounting a plurality of fixed support plates 4 on the side surface of the side short pipe 3, measuring the distance between the fixed support plates 4 and ribs 6 on two sides of the side short pipe 3, and manufacturing an adjustable support plate 5 according to the measured distance between the fixed support plates 4 and the ribs 6 on two sides of the side short pipe 3;
S2, after the adjustable support plate 5 is manufactured, the adjustable support plate 5 is respectively connected and fixed with the rib 6 and the corresponding fixed support plate 4;
S3, after the installation of the adjustable supporting plate 5 is completed, the connection and fixation of the reinforcing plate and the ribs 6 on the two sides of the side short pipe 3 are completed; the side short pipe 3 is fixedly connected with the ribs 6 on the two sides through the reinforcing plate, so that the installation stability of the side short pipe 3 is improved.
The reinforcing plate comprises a fixed support plate 4 and an adjustable support plate 5, three fixed support plates 4 are welded on the side surface of the side short tube 3, each fixed support plate 4 is respectively connected and fixed with the rib 6 through the adjustable support plate 5, when the distance between the fixed support plate 4 and the rib 6 on two sides of the side short tube 3 is measured, the distance between each fixed support plate 4 and the nearest rib 6 is measured, and meanwhile, the distance between each fixed support plate 4 and the nearest rib 6 is measured along the length direction of the fixed support plate 4; the fixed support plate 4 is connected and fixed with the ribs 6 through the adjustable support plate 5, and the adjustable support plate 5 can be adjusted according to the distance between the fixed support plate 4 and the ribs 6, so that the installation flexibility and stability of the side short pipe 3 at different positions are improved.
The specific steps of the tightness test of the side short pipe 3 in the sixth step are as follows: after the installation of the side short pipe 3 is completed, a connecting valve on one end of the side short pipe 3 is closed, the other end of the side short pipe 3 is sealed, and then the side short pipe 3 is inflated for tightness test, so that the tightness test of the side short pipe 3 is completed.
In the seventh step, when the part of the outboard side short pipe 3 is cut, the root of the outboard side short pipe 3 is left for 10mm, all the rest parts of the outboard side short pipe 3 are cut, and after the cutting and polishing are finished, the cutting and welding parts are coated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that; modifications may be made to the specific embodiments of the invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (7)
1. A method for positioning and scribing a side short pipe of a ship, wherein the side short pipe (3) is arranged on a hull outer plate (1), and the method is characterized by comprising the following steps:
firstly, calculating the size of a side short pipe (3), obtaining a three-dimensional model of a ship body, obtaining the horizontal size (9) and the height size (7) of the side short pipe (3) on the outer plate (1) in the three-dimensional model of the ship body according to the installation position of the side short pipe (3) on the outer plate (1) of the ship body, and determining the specific installation position of the side short pipe (3) on the outer plate (1);
secondly, according to the three-dimensional model of the ship body obtained in the first step, projecting the end face of the side short pipe (3) on the installation position of the side short pipe (3) on the outer plate (1) to obtain an elliptical intersection line; manufacturing a scribing template on the template according to the elliptic intersecting line;
thirdly, determining the mounting position of the side short pipe (3) on the outer plate (1) according to the specific mounting position of the side short pipe (3) on the outer plate (1) of the ship body, placing a scribing template on the mounting position of the side short pipe (3) on the outer plate (1) of the ship body, drawing an elliptical intersecting line, and uniformly knocking out a sample on the intersecting line;
Fourthly, after the elliptic intersecting line on the hull plate (1) is marked, perforating the hull plate (1) along the outline of the elliptic intersecting line, and polishing the perforation;
Fifthly, after the outer plate (1) is perforated and polished smooth, the corresponding side short pipe (3) is installed in the perforated outer plate (1), the side short pipe (3) is fixedly connected with ribs (6) on two sides of the side short pipe (3) through a reinforcing plate, and the joint of the side short pipe (3) and the perforated outer plate (1) is fixedly welded;
Sixthly, after the perforating welding and fixing of the side short pipe (3) and the outer plate (1) are finished, carrying out ultrasonic flaw detection on a welding seam of the side short pipe (3) and the outer plate (1), carrying out zinc supplementing treatment on a damaged part of the welding seam, and carrying out tightness test on the side short pipe (3) after flaw detection is finished;
Seventh, after the tightness test is finished, cutting and polishing the part of the side short pipe (3) positioned outside the board, and after the cutting is finished, coating the welding part of the side short pipe (3), so as to finish the positioning and scribing installation of the side short pipe (3);
The three-dimensional model of the ship body in the first step is obtained by modeling an SPD system, the three-dimensional model of the ship body comprises a side short pipe (3) which is arranged at a specific installation position of an outer plate (1) of the ship body, and the horizontal dimension (9) of the side short pipe (3) on the outer plate (1) in the three-dimensional model of the ship body is the horizontal dimension (9) between a rib (6) closest to the centerline (8) of the side short pipe and the side short pipe (3);
The specific steps of acquiring the height dimension (7) of the side short pipe (3) on the outer plate (1) in the three-dimensional model of the ship body in the first step are as follows: and (3) intercepting a cross-sectional view of a corresponding rib position of the installation position of the side short pipe (3) in the three-dimensional model of the ship body, and measuring the height dimension (7) between the closest flat-bulb steels (2) below the side short pipe center line (8), wherein the height dimension (7) is used for measuring the height dimension (7) between the closest flat-bulb steels (2) below the side short pipe (3) along the linear shape of the ship body outer plate (1) from the installation position of the side short pipe (3).
2. The method for positioning and scribing the side short pipe of the ship according to claim 1, wherein the specific steps of scribing sample plate manufacturing in the second step are as follows: measuring the major axis and the minor axis of the elliptical intersecting line according to the elliptical intersecting line obtained from the three-dimensional model of the ship body, drawing the major axis and the minor axis on the template according to the measured major axis and minor axis of the elliptical intersecting line, and connecting the two ends of the major axis and the minor axis through a smooth curve to obtain the elliptical intersecting line, thereby completing the manufacture of the scribing template; the long axis and the short axis are perpendicular to each other, and the intersection point of the long axis and the short axis is an ellipse center point.
3. A method for locating and scoring a side pipe spool of a ship according to claim 1, wherein the third step of locating the mounting position of the side pipe spool (3) on the hull outer plate (1) is specifically: according to the horizontal dimension (9) and the height dimension (7) of the side short pipe (3) obtained in the first step, an operator measures and determines the installation center point of the side short pipe (3) on the outer plate (1); and then overlapping the elliptical central point on the scribing sample plate with the installation central point of the side short pipe (3), and scribing an elliptical intersection line on the hull outer plate (1) along the elliptical intersection line on the scribing sample plate.
4. A method for positioning and scribing a side pipe spool of a ship according to claim 1, wherein the specific steps of connecting and fixing the reinforcing plate and the ribs (6) on both sides of the side pipe spool (3) in the fifth step are as follows:
S1, mounting a side short pipe (3) at an opening of an outer plate (1), mounting a plurality of fixed support plates (4) on the side surface of the side short pipe (3), measuring the distance between the fixed support plates (4) and ribs (6) on two sides of the side short pipe (3), and manufacturing an adjustable support plate (5) according to the measured distance between the fixed support plates (4) and the ribs (6) on two sides of the side short pipe (3);
S2, after the adjustable support plate (5) is manufactured, connecting and fixing the adjustable support plate (5) with the rib (6) and the corresponding fixed support plate (4) respectively;
s3, after the installation of the adjustable supporting plate (5) is finished, the connection and fixation of the reinforcing plate and the ribs (6) at the two sides of the side short pipe (3) are finished.
5. The method for positioning and scribing the side short pipe of the ship according to claim 4, wherein the reinforcing plate comprises a fixed supporting plate (4) and an adjustable supporting plate (5), three fixed supporting plates (4) are welded on the side surface of the side short pipe (3), each fixed supporting plate (4) is respectively connected and fixed with ribs (6) through the adjustable supporting plate (5), and when the distance between the fixed supporting plate (4) and the ribs (6) on two sides of the side short pipe (3) is measured, the distance between each fixed supporting plate (4) and the nearest rib (6) is measured, and meanwhile, the distance between each fixed supporting plate (4) and the nearest rib (6) is measured along the length direction of the fixed supporting plate (4).
6. A method for positioning and scribing a side pipe spool of a ship according to claim 1, wherein the specific steps of performing tightness test on the side pipe spool (3) in the sixth step are as follows: after the installation of the side short pipe (3) is completed, a connecting valve at one end of the side short pipe (3) is closed, the other end of the side short pipe (3) is sealed, and then the side short pipe (3) is inflated for tightness test, so that the tightness test of the side short pipe (3) is completed.
7. A method for positioning and scribing a ship side short pipe according to claim 1, wherein in the seventh step, when the part of the side short pipe (3) outside the ship is cut, the side short pipe (3) outside the ship is left with a root of 10mm, the rest part of the side short pipe (3) outside the ship is completely cut, and after the cutting and polishing are completed, the cut and welded part is coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211200479.4A CN115502947B (en) | 2022-09-29 | 2022-09-29 | Positioning and scribing method for short pipe beside ship board |
Applications Claiming Priority (1)
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