CN115502947A - Method for positioning and marking short pipe beside ship board - Google Patents
Method for positioning and marking short pipe beside ship board Download PDFInfo
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- CN115502947A CN115502947A CN202211200479.4A CN202211200479A CN115502947A CN 115502947 A CN115502947 A CN 115502947A CN 202211200479 A CN202211200479 A CN 202211200479A CN 115502947 A CN115502947 A CN 115502947A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005498 polishing Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229940091251 zinc supplement Drugs 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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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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Abstract
The invention discloses a method for positioning and scribing a ship board side short pipe, which comprises the steps of determining the installation position of the board side short pipe by measuring the height and horizontal dimensions of the board side short pipe, a flat-bulb steel and a rib plate, manufacturing a scribing sample plate, scribing an elliptical section intersection line on a ship hull outer plate, opening a hole, and then positioning, scribing and installing the board side short pipe. The method determines the mounting position of the broadside short pipe by measuring the height dimensions and the horizontal dimensions of the broadside short pipe, the bulb steel and the rib plate, reduces the difficulty of measuring the mounting position of the broadside short pipe on the hull outer plate, improves the mounting precision and the mounting efficiency of the broadside short pipe, and shortens the construction period.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a method for positioning and marking short pipes beside a ship board.
Background
The side short pipe is an important component of a ship system and has the main functions of: the deck is arranged in a water falling mode and is arranged outside a board, the cooling seawater is arranged outside the board, the boiler is arranged in a sewage discharge mode and is arranged outside the board, the bilge oil sewage is arranged outside the board, the domestic sewage treatment device is arranged outside the board, the bilge water is arranged outside the board, the ballast water is arranged outside the board, the fire water is arranged outside the board, and the like. The side short pipes are usually distributed on outer plates on two sides of the ship along the ship length direction, the height direction is respectively arranged above a waterline and below the waterline according to respective functions, the appearance is attractive, and the side short pipes with the same function and adjacent regions can be arranged at the same horizontal height as much as possible during design.
Generally, the installation of the ship board side short pipe needs a series of steps of positioning, marking, tapping, tack welding, double-sided continuous welding, reinforcing plate welding, outer plate welding seam flaw detection, short pipe tightness, cutting and polishing of extra outboard parts, zinc supplement and coating of electric welding damaged parts and the like; the positioning and marking are the source and the key of the whole process, and determine the installation accuracy and quality of the gunwale short pipe. The overall appearance is affected by too large positioning deviation, so that the side short pipe cannot be connected with the marine pipe and even interferes with other objects, the side short pipe needs to be repositioned once the side short pipe and the marine pipe are in such a condition, and the plate can only be replaced due to the fact that the specification does not allow hole repairing of the outer plate, so that the cost is high, and particularly the part with a large line type of the outer plate is high; the scribing deviation can cause the gap of the welding line between the short pipe beside the board and the outer plate to be out of tolerance and uneven, thereby affecting the quality of the welding line and causing subsequent rework due to unqualified detection of the welding line flaw detection; a ship body three-dimensional model is established through an SPD system, the SPD system performs three-dimensional design by taking a ship product data model as a center and adopting a regular driving mode, complete topological relation and process design information exist among the models, and the requirements of professional three-dimensional full-digital design such as ship totality, structure, air pipes, electricity, iron outfitting, inner outfitting, outer outfitting and coating can be met; by using the software, the three-dimensional rate of the ship model reaches 100%, and the ship modeling integrity reaches more than 98%. Based on the three-dimensional model, the analysis on the performance, the structural strength, the process rationality and the manufacturing feasibility of the ship product can be realized, and the required two-dimensional drawing and various summary tables can be generated for field construction.
The traditional method for positioning and marking the lateral short pipe comprises the steps of positioning according to the height of the lateral short pipe marked by a drawing and the size of a rib position along the length direction of a ship, marking a circle by taking a positioning point as the center of a circle and the radius of the pipe plus 2mm as the radius on an outer plate, and trimming and cutting on the basis until the pipe can be completely inserted into a hole during subsequent hole opening. Because the height dimension marked by the drawing is the height from the ship body baseline, the height needs to be converted into the height value from the corresponding deck in actual operation. For the position with a large line type of the outer plate, the height measurement difficulty is large, 3 persons are needed to cooperate with the angle steel and the horizontal ruler to horizontally extend the height from the connecting position of the deck and the outer plate to the position of the outer plate, wherein 1 person holds the angle steel and observes the horizontal ruler, the other 1 person measures the height from 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 marker pen.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for positioning and marking the ship board side short pipe.
In order to achieve the purpose of the invention, the invention provides the following technical scheme:
a method for positioning and marking off a ship side short pipe is used, wherein the side short pipe is arranged on an outer plate of a ship, and the method specifically comprises the following steps:
firstly, calculating the size of the broadside short pipe to obtain a three-dimensional model of the ship body, obtaining the horizontal size and the height size of the broadside short pipe on the outer plate in the three-dimensional model of the ship body according to the installation position of the broadside short pipe on the outer plate of the ship body, and determining the specific installation position of the broadside short pipe on the outer plate;
secondly, projecting the end surface of the broadside short pipe on the mounting position of the broadside short pipe on the outer plate to obtain an elliptical cross-section line according to the three-dimensional model of the ship body obtained in the first step; manufacturing a marking template on the template according to the oval cross-sectional line;
thirdly, determining the mounting position of the broadside short pipe on the hull outer plate according to the specific mounting position of the broadside short pipe on the outer plate determined in the first step, placing a marking template on the broadside short pipe at the mounting position of the hull outer plate to mark an oval intersecting line, and uniformly knocking sample stamping on the intersecting line;
fourthly, after the oval cross-sectional line on the hull plate is marked, drilling holes on the hull plate along the outline of the oval cross-sectional line, and polishing the holes;
fifthly, after the outer plate is opened and polished, installing the corresponding board side short pipe in the opening of the outer plate, connecting and fixing the board side short pipe and ribs on two sides of the board side short pipe through a reinforcing plate, and welding and fixing the connection part of the board side short pipe and the opening of the outer plate;
sixthly, after the broadside short pipe and the opening of the outer plate are welded and fixed, carrying out ultrasonic flaw detection on a welding seam of the broadside short pipe and the outer plate, carrying out zinc supplement treatment on a damaged part of the welding seam, and carrying out a tightness test on the broadside short pipe after the flaw detection is finished;
and seventhly, after the tightness test is finished, cutting and polishing the outboard short pipe parts of the side boards, and after the cutting is finished, coating the welding positions of the short pipes of the side boards to finish the positioning and scribing installation of the short pipes of the side boards.
And the hull three-dimensional model in the first step is obtained by modeling of the SPD system, the hull three-dimensional model comprises a specific installation position of the board-side short pipe installed on the hull outer plate, and the horizontal size of the board-side short pipe on the outer plate in the hull three-dimensional model is the horizontal size between the rib closest to the central line of the board-side short pipe and the board-side short pipe.
The specific steps of obtaining 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) cutting a cross section diagram of a corresponding rib position of the mounting position of the board-side short pipe in the three-dimensional model of the ship body, and measuring the height dimension between the ball flat steels which are closest to the lower part of the center line of the board-side short pipe, wherein the height dimension is measured from the mounting position of the board-side short pipe along the line type of the ship body outer plate.
The second step of making the marking template comprises the following specific steps: measuring the sizes of a long axis and a short axis of the elliptic section line according to the elliptic section line obtained from the ship body three-dimensional model, drawing the long axis and the short axis on the template according to the sizes of the long axis and the short axis of the measured elliptic section line, connecting the two ends of the long axis and the short axis through smooth curves to obtain the elliptic section line, and finishing the manufacture of the marking template; the long axis and the short axis are mutually vertical, and the intersection point of the long axis and the short axis is an ellipse central point.
The third step of determining the mounting position of the broadside short pipe on the hull outer plate specifically comprises the following steps: according to the horizontal size and the height size of the broadside short pipe obtained in the first step, an operator measures and determines the mounting central point of the broadside short pipe on the outer plate; then the central point of the ellipse on the marking template is superposed with the mounting central point of the short pipe beside the board, and the cross-section line of the ellipse on the hull outer plate is marked along the cross-section line of the ellipse on the marking template.
The concrete steps of connecting and fixing the reinforcing plate and the ribs on two sides of the gunnery short pipe in the fifth step are as follows:
s1, mounting a board side short pipe at an opening of an outer plate, mounting a plurality of fixed supporting plates on the side surface of the board side short pipe, measuring the distance between each fixed supporting plate and ribs on two sides of the board side short pipe, and manufacturing adjustable supporting plates according to the measured distance between each fixed supporting plate and the ribs on two sides of the board side short pipe;
s2, after the adjustable supporting plates are manufactured, the adjustable supporting plates are respectively connected and fixed with the ribs and the corresponding fixed supporting plates;
and S3, after the adjustable supporting plate is installed, the reinforcing plate is connected and fixed with the ribs on the two sides of the broadside short pipe.
The reinforcing plate comprises a fixed supporting plate and an adjustable supporting plate, three fixed supporting plates are welded on the side face of the broadside short pipe, each fixed supporting plate is fixedly connected with the corresponding rib through the adjustable supporting plate, when the distance between the fixed supporting plate and the corresponding rib on the two sides of the broadside short pipe is measured, the distance between each fixed supporting plate and the closest rib is measured, and meanwhile the distance between each fixed supporting plate and the closest rib is measured along the length direction of the fixed supporting plate.
The sixth step of performing the tightness test on the side short pipe of the middle board comprises the following specific steps: and after the short tube beside the board is installed, closing the connecting valve at one end of the short tube beside the board, sealing the other end of the short tube beside the board, and inflating the short tube beside the board for carrying out a tightness test to complete the tightness test of the short tube beside the board.
And when the part of the outboard port short pipe in the seventh step is cut, reserving a root of the outboard port short pipe by 10mm, cutting the rest part of the outboard port short pipe, and after cutting and polishing are finished, coating the cut and welded part.
Based on the technical scheme, the splicing method for the steel plates with different thicknesses disclosed by the invention has the following technical advantages through practical application:
1. according to the method for positioning and scribing the ship board side short pipe, the mounting position of the board side short pipe is determined by measuring the height and horizontal dimensions of the board side short pipe, the flat-bulb steel and the rib plate, the difficulty in measuring the mounting position of the board side short pipe on the hull outer plate is reduced, the mounting precision and mounting efficiency of the board side short pipe are improved, and the construction period is shortened.
2. According to the method for positioning and marking the ship board side short pipe, the distance of the ball flat steel which is closest to the lower part of the board side short pipe is measured to be the height size to replace the height of the existing board side short pipe from a ship body base line, the problem that the height of the board side short pipe from the ship body base line needs to be converted into the height value from a corresponding deck to be measured is avoided, the difficulty in measuring the height size of the board side short pipe is reduced, and the accuracy in measuring the height size of the board side short pipe is improved.
3. According to the method for positioning and scribing the ship board side short pipe, the board side short pipe and the ribs on two sides are connected and fixed through the reinforcing plate, and the mounting stability of the board side short pipe is improved.
Drawings
FIG. 1 is a schematic view of the installation position of a broadside short pipe in the method for positioning and marking the broadside short pipe of the ship.
Fig. 2 is a schematic diagram of the height dimension measurement of the broadside short pipe in the method for positioning and marking the broadside short pipe of the ship.
Fig. 3 is a schematic diagram of the horizontal dimension measurement of the broadside short pipe in the method for positioning and marking the broadside short pipe of the ship.
FIG. 4 is a front view of the installation of the reinforcing plate in the method for positioning and marking the short tube beside the ship.
FIG. 5 is a side view of the installation of the reinforcing plate used in the method for positioning and marking the short tube beside the board of the ship.
Detailed Description
In order that the objects, aspects and advantages of the present invention will become more apparent, the invention will be described by way of specific examples shown in the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-5, the invention belongs to a method for positioning and marking off a ship board-side short pipe, wherein the board-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 the board side short pipe 3 to obtain a three-dimensional model of the ship body, obtaining the horizontal size 9 and the height size 7 of the board 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 board side short pipe 3 on the outer plate 1 of the ship body, and determining the specific installation position of the board side short pipe 3 on the outer plate 1; the mounting position of the board side short pipe 3 is determined by measuring the height dimension 7 and the horizontal dimension 9 of the board side short pipe 3, the bulb flat steel 2 and the rib plate, the difficulty of measuring the mounting position of the board side short pipe 3 on the hull outer plate 1 is reduced, the mounting precision and the mounting efficiency of the board side short pipe 3 are improved, and the construction period is shortened.
Secondly, projecting the end surface of the board side short pipe 3 on the mounting position of the board side short pipe 3 on the outer plate 1 to obtain an elliptical cross-section line according to the three-dimensional model of the ship body obtained in the first step; manufacturing a marking template on the template according to the oval cross-sectional line;
thirdly, determining the mounting position of the board-side short pipe 3 on the hull outer plate 1 according to the specific mounting position of the board-side short pipe 3 on the outer plate 1 determined in the first step, placing a marking template on the board-side short pipe 3 at the mounting position of the hull outer plate 1 to mark an oval intersecting line, and uniformly knocking sample stamping on the intersecting line;
fourthly, after the oval cross-sectional line on the hull plate 1 is marked, opening holes in the hull plate 1 along the outline of the oval cross-sectional line, and polishing the opening holes;
fifthly, after the outer plate 1 is opened and polished, installing the corresponding board side short pipe 3 in the opening of the outer plate 1, connecting and fixing the board side short pipe 3 with ribs 6 on two sides of the board side short pipe 3 through a reinforcing plate, and welding and fixing the connection part of the board side short pipe 3 and the opening of the outer plate 1;
sixthly, after the opening of the broadside short pipe 3 and the outer plate 1 is welded and fixed, performing ultrasonic flaw detection on a welding seam of the broadside short pipe 3 and the outer plate 1, performing zinc supplement treatment on a damaged part of the welding seam, and performing a tightness test on the broadside short pipe 3 after the flaw detection is finished;
and seventhly, after the tightness test is finished, cutting and polishing the outboard part of the broadside short pipe 3, and after the cutting is finished, coating the welding position of the broadside short pipe 3 to finish the positioning and scribing installation of the broadside short pipe 3.
The hull three-dimensional model in the first step is obtained by modeling of the SPD system, the hull three-dimensional model comprises a specific installation position of the broadside short pipe 3 on the hull outer plate 1, and the horizontal size 9 of the broadside short pipe 3 on the outer plate 1 in the hull three-dimensional model is the horizontal size 9 between the rib 6 closest to the central line 8 of the broadside short pipe and the broadside 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: the cross section of the corresponding rib position of the mounting position of the board side short pipe 3 in the three-dimensional model of the ship body is cut, the height 7 between the central lines 8 of the board side short pipes and the nearest flat-bulb steel 2 below the board side short pipes is measured, and the height 7 between the nearest flat-bulb steel 2 below the board side short pipes 3 is measured along the line type of the ship body outer plate 1 from the mounting position of the board side short pipes 3; the distance between the broadside short pipe 3 and the nearest bulb-shaped steel 2 below is measured to be the height 7 to replace the height between the existing broadside short pipe 3 and the ship base line, the problem that the height between the broadside short pipe 3 and the ship base line needs to be converted into the height between the broadside short pipe 3 and the ship base line to be measured is avoided, the measuring difficulty of the height 7 of the broadside short pipe 3 is reduced, and the measuring precision of the height 7 of the broadside short pipe 3 is improved.
The manufacturing of the marking template in the second step comprises the following specific steps: measuring the sizes of a long axis and a short axis of the elliptic section line according to the elliptic section line obtained from the ship body three-dimensional model, drawing the long axis and the short axis on the template according to the sizes of the long axis and the short axis of the measured elliptic section line, connecting the two ends of the long axis and the short axis through smooth curves to obtain the elliptic section line, and finishing the manufacture of the marking template; the long axis and the short axis are mutually vertical, and the intersection point of the long axis and the short axis is an ellipse central point.
The third step of determining the mounting position of the broadside short pipe 3 on the hull plate 1 specifically comprises the following steps: according to the horizontal size 9 and the height size 7 of the broadside short pipe 3 obtained in the first step, an operator measures and determines the installation central point of the broadside short pipe 3 on the outer plate 1; then, the center point of the ellipse on the marking template is superposed with the installation center point of the short pipe 3 beside the board, and the cross-section line of the ellipse on the hull outer plate 1 is marked along the cross-section line of the ellipse on the marking template; the size and shape of the opening of the board side short pipe 3 at the mounting position of the hull outer plate 1 are determined by manufacturing the marking template, and the efficiency of determining the opening position and the opening shape and size is improved.
The concrete steps of connecting and fixing the reinforcing plate and the ribs 6 at two sides of the gunwale short pipe 3 in the fifth step are as follows:
s1, installing a board side short pipe 3 at an opening of an outer plate 1, installing a plurality of fixed supporting plates 4 on the side surface of the board side short pipe 3, measuring the distances between the fixed supporting plates 4 and ribs 6 on two sides of the board side short pipe 3, and manufacturing adjustable supporting plates 5 according to the measured distances between the fixed supporting plates 4 and the ribs 6 on two sides of the board side short pipe 3;
s2, after the adjustable supporting plate 5 is manufactured, the adjustable supporting plate 5 is respectively connected and fixed with the ribs 6 and the corresponding fixed supporting plates 4;
s3, after the adjustable supporting plate 5 is installed, the connection and fixation of the reinforcing plate and the ribs 6 on the two sides of the gunwale short pipe 3 are completed; the gunwale short pipe 3 and the ribs 6 at two sides are connected and fixed through the reinforcing plate, and the mounting stability of the gunwale short pipe 3 is improved.
The reinforcing plate comprises a fixed supporting plate 4 and an adjustable supporting plate 5, the three fixed supporting plates 4 are welded on the side surface of the broadside short pipe 3, each fixed supporting plate 4 is respectively connected and fixed with the corresponding rib 6 through the adjustable supporting plate 5, when the distance between each fixed supporting plate 4 and the corresponding rib 6 on the two sides of the broadside 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; the fixed support plate 4 and the rib 6 are fixedly connected through the adjustable support plate 5, the adjustable support plate 5 can be adjusted according to the distance between the fixed support plate 4 and the rib 6, and the mounting flexibility and stability of the board side short pipes 3 at different positions are improved.
The sixth step of performing the tightness test on the intermediate side short pipe 3 comprises the following specific steps: after the installation of the board side short pipe 3 is completed, the connection valve on one end of the board side short pipe 3 is closed, the other end of the board side short pipe 3 is sealed, and the board side short pipe 3 is inflated to perform a sealing test, thereby completing the sealing test of the board side short pipe 3.
When the outboard short pipe 3 is cut in the seventh step, the outboard short pipe 3 is cut with a 10mm stub, and the rest of the outboard short pipe 3 is cut, and after the cutting and polishing are completed, the cut and welded parts are coated.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that; modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (9)
1. A method for positioning and marking a ship board side short pipe is characterized in that the board 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 the board-side short pipe (3), acquiring a three-dimensional model of the ship body, acquiring the horizontal size (9) and the height size (7) of the board-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 board-side short pipe (3) on the outer plate (1), and determining the specific installation position of the board-side short pipe (3) on the outer plate (1);
secondly, projecting the end surface of the board side short pipe (3) on the mounting position of the board side short pipe (3) on the outer plate (1) to obtain an elliptical section line according to the three-dimensional model of the ship body obtained in the first step; manufacturing a marking template on the template according to the oval cross-sectional line;
thirdly, determining the mounting position of the broadside short pipe (3) on the outer plate (1) of the ship body according to the specific mounting position of the broadside short pipe (3) on the outer plate (1) determined in the first step, placing a marking template on the broadside short pipe (3) to mark an oval intersection line at the mounting position of the ship body outer plate (1), and uniformly knocking sample stamping on the intersection line;
fourthly, after the oval cross-sectional line on the hull outer plate (1) is marked, drilling holes on the outer plate (1) along the outline of the oval cross-sectional line, and polishing the holes;
fifthly, after the outer plate (1) is perforated and polished, installing the corresponding board side short pipe (3) in the perforated hole of the outer plate (1), connecting and fixing the board side short pipe (3) with ribs (6) on two sides of the board side short pipe (3) through a reinforcing plate, and welding and fixing the connection part of the board side short pipe (3) and the perforated hole of the outer plate (1);
sixthly, after the opening of the side short pipe (3) and the outer plate (1) is welded and fixed, performing ultrasonic flaw detection on a welding seam of the side short pipe (3) and the outer plate (1), performing zinc supplement treatment on a damaged part of the welding seam, and performing a tightness test on the side short pipe (3) after the flaw detection is completed;
and seventhly, after the tightness test is finished, cutting and polishing the part of the outboard short tube (3), and after the cutting is finished, coating the welding position of the short tube (3) to finish the positioning and scribing installation of the short tube (3).
2. The method for positioning and marking the ship side short pipe according to claim 1, wherein the ship three-dimensional model in the first step is obtained by modeling of an SPD system, the ship three-dimensional model comprises specific installation positions of the side short pipe (3) on the outer plate (1) of the ship, and the horizontal dimension (9) of the side short pipe (3) on the outer plate (1) in the ship three-dimensional model 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).
3. The method for the positioning and scribing of the ship side short pipe according to the claim 1, wherein the height dimension (7) of the side short pipe (3) on the outer plate (1) in the ship body three-dimensional model in the first step is obtained through the following specific steps: and (2) cutting a cross section diagram of a corresponding rib position of the mounting position of the board side short pipe (3) in the three-dimensional model of the ship body, measuring the height (7) between the central lines (8) of the board side short pipes and the flat bulb steels (2) nearest to the lower part, wherein the height (7) is measured from the mounting position of the board side short pipe (3) along the line type of the ship body outer plate (1) and the height (7) between the flat bulb steels (2) nearest to the lower part of the board side short pipe (3).
4. The method for positioning and marking the short pipe beside the ship board according to claim 1, wherein the second step of making the marking template comprises the following specific steps: measuring the sizes of a long axis and a short axis of the elliptic section line according to the elliptic section line obtained from the ship body three-dimensional model, drawing the long axis and the short axis on the template according to the sizes of the long axis and the short axis of the measured elliptic section line, connecting the two ends of the long axis and the short axis through smooth curves to obtain the elliptic section line, and finishing the manufacture of the marking template; the long axis and the short axis are mutually vertical, and the intersection point of the long axis and the short axis is an ellipse central point.
5. The method for positioning and marking the ship board side short pipe according to the claim 1, wherein the third step is to determine the mounting position of the board side short pipe (3) on the ship hull outer plate (1) specifically as follows: according to the horizontal size (9) and the height size (7) of the side short pipe (3) obtained in the first step, an operator measures and determines the installation central point of the side short pipe (3) on the outer plate (1); then, the central point of the ellipse on the marking template is superposed with the mounting central point of the short pipe (3) beside the board, and the cross-section line of the ellipse on the hull outer plate (1) is marked along the cross-section line of the ellipse on the marking template.
6. The method for positioning and marking the ship board side short pipe according to claim 1, wherein the concrete steps of connecting and fixing the reinforcing plate and the ribs (6) on two sides of the board side short pipe (3) in the fifth step are as follows:
s1, mounting a board side short pipe (3) at an opening of an outer plate (1), mounting a plurality of fixed supporting plates (4) on the side surface of the board side short pipe (3), measuring the distance between the fixed supporting plates (4) and ribs (6) on two sides of the board side short pipe (3), and manufacturing an adjustable supporting plate (5) according to the measured distance between the fixed supporting plates (4) and the ribs (6) on two sides of the board side short pipe (3);
s2, after the adjustable supporting plate (5) is manufactured, the adjustable supporting plate (5) is respectively connected and fixed with the ribs (6) and the corresponding fixed supporting plates (4);
and S3, after the adjustable supporting plate (5) is installed, the connection and fixation of the reinforcing plate and the ribs (6) on two sides of the board side short pipe (3) are completed.
7. The method for positioning and scribing the ship lateral short pipe according to claim 6, wherein the reinforcing plates comprise a fixed supporting plate (4) and an adjustable supporting plate (5), three fixed supporting plates (4) are welded on the lateral side of the lateral short pipe (3), each fixed supporting plate (4) is respectively connected and fixed with the ribs (6) through the adjustable supporting plate (5), when the distance between the fixed supporting plate (4) and the ribs (6) on two sides of the lateral 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).
8. The method for positioning and marking the ship board side short pipe according to the claim 1, wherein the sixth step of performing the tightness test on the board side short pipe (3) comprises the following specific steps: and after the board side short pipe (3) is installed, closing the connecting valve at one end of the board side short pipe (3), sealing the other end of the board side short pipe (3), and filling air into the board side short pipe (3) for carrying out a tightness test to complete the tightness test of the board side short pipe (3).
9. The method for positioning and scribing the ship board side short pipe according to claim 1, wherein when the part of the outboard board side short pipe (3) in the seventh step is cut, the outboard board side short pipe (3) is left with a root of 10mm, and the rest part of the outboard board side short pipe (3) is completely cut, and after the cutting and the grinding are finished, the cut part and the welded part are painted.
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| CN115502947B (en) | 2024-05-14 |
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