CN114750895A - Positioning and mounting method for side-push and side-push sealing cover - Google Patents
Positioning and mounting method for side-push and side-push sealing cover Download PDFInfo
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- CN114750895A CN114750895A CN202210350853.2A CN202210350853A CN114750895A CN 114750895 A CN114750895 A CN 114750895A CN 202210350853 A CN202210350853 A CN 202210350853A CN 114750895 A CN114750895 A CN 114750895A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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Abstract
The invention belongs to the technical field of ship manufacturing, and discloses a positioning and mounting method for a side-push and side-push sealing cover, which comprises the following steps: s1, manufacturing a segmented jig frame, installing a jig frame template in an alignment mode, and scribing; s2, mounting a mark post at the first FR rib position line and the second FR rib position line, and marking a waterline on the mark post; s3, determining the allowance of the side-push cylinder, measuring the line type of the hull plate, and performing simulated hoisting on the side-push cylinder and the hull plate; adjusting the linear deviation of the side-push sealing cover, and performing allowance scribing and trimming on the upper opening of the hull plate according to a simulation result; s4, hoisting the side-push cylinder; s5, hoisting a side-push sealing cover; s6, welding the side push cylinder and the side push sealing cover; and S7, welding the side push cylinder body and the side push sealing cover with the ship structure according to the welding sequence. According to the positioning and mounting method for the side-push and side-push sealing cover, the floor pre-assembly is not required to be carried out by adding a jig, and the side-push device is directly and completely positioned and mounted in the segmented manufacturing stage, so that the precision requirement is met.
Description
Technical Field
The invention relates to the technical field of ship manufacturing, in particular to a positioning and mounting method for a side-push sealing cover and a side-push sealing cover.
Background
In the construction of ship products, the side thrust device is used as a special thrust device, so that the maneuverability and maneuverability of the ship are greatly improved. The side-push device commonly used on the existing common ship is generally divided into a side-push barrel and a connecting barrel, wherein the side-push barrel is provided with a paddle and a motor base, the connecting barrel is divided into a left part and a right part without a sealing cover and a hull outer plate, the structure is simpler, the side-push device is preassembled into a whole on a ground jig frame during installation, and then the side-push device is integrally hoisted to a subsection for positioning and installation. And in some novel scientific investigation ship products, the structure of side pushes away the device and divide into the side and pushes away the barrel and the side pushes away the closing cap, and two sides push away the barrel level and arrange, and the side pushes away the barrel and takes paddle and motor base, and the side pushes away the closing cap and includes side push cover plate and hull planking, connects at the both ends that the side pushed away the barrel. According to the positioning and mounting method of the existing side pushing device, the following problems exist: the side-push sealing cover is provided with a side-push cover plate and a hull outer plate with a larger area, so that the height of the jig frame is required to be increased during ground assembly, the construction difficulty is increased, and the side-push concentricity, the levelness of a side-push motor base, the line type of the outer plate and the like are difficult to control.
Therefore, a need exists for a method of positioning and mounting for side push and side push closures that addresses the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a positioning and mounting method for side pushing and side pushing sealing covers, ground preassembly is not required to be carried out by adding a jig, and a side pushing device is directly and completely positioned and mounted in a segmented manufacturing stage, so that the precision requirement is met.
In order to achieve the purpose, the invention adopts the following technical scheme:
a positioning and mounting method for side-push and side-push covers is provided, which comprises the following steps:
step S1, manufacturing a segmented jig frame, installing a jig frame template in an aligned mode, drawing a positioning Y-value datum line of a segmented center line, a first FR rib bit line, a second FR rib bit line and a side push barrel on the ground, and determining a segmented base line;
step S2, respectively installing mark poles at the first FR rib position line and the second FR rib position line, and marking a first waterline and a second waterline on the mark poles according to the subsection base line and the subsection central line;
step S3, determining the allowance of the side-push cylinder according to the machining precision of the side-push sealing cover, then measuring the line type of the hull plate, and carrying out simulated hoisting on the side-push cylinder and the hull plate; adjusting the linear deviation of the side-push seal cover, and performing allowance scribing and trimming on the upper opening of the hull outer plate according to a simulation result;
step S4, hoisting the side-push cylinder, assembling and fixing;
step S5, hoisting the side-push sealing cover, assembling and fixing;
step S6, welding the side-push cylinder body and the side-push sealing cover;
and S7, welding the side push cylinder, the side push sealing cover and the ship structure according to the established welding sequence.
As a preferred embodiment of the present invention, the method further comprises the following steps after the step S1 and before the step S2:
step S10, the outer bottom plate is spliced and the tire is loaded, and the inner bottom transverse wall plate assembly and the bottom part in the stem apex cabin are hoisted in sequence;
and S20, hoisting the side-push bottom assembly and completing welding of the welding seam of the segmented structure.
As a preferred embodiment of the present invention, the step S2 specifically includes the following steps:
step S21, installing the mark post at the first FR rib position line and the second FR rib position line respectively, and welding and fixing the mark post and the ground;
step S22, respectively leading the first FR rib position line and the second FR rib position line to the respective posts;
step S23, leading the segmented base line to the benchmark;
step S24, respectively marking the first waterline and the second waterline on the mark post by taking the segmented base line as a reference;
and step S25, marking the intersection point of the first water line and the first FR rib bit line and the intersection point of the second water line and the second FR rib bit line on the marker post.
As a preferred embodiment of the present invention, after the step S5 and before the step S6, the method further comprises:
and step S50, rechecking and recording the levelness of the plane on the motor base and the concentricity of the side-push cylinder.
In a preferred embodiment of the present invention, in step S6, the side-push cylinder and the side-push cap are welded by symmetric welding.
As a preferred embodiment of the present invention, after the step S6 and before the step S7, the method further comprises:
step S60, assembling the slow welding structure and/or slow installation structure in the assembly stage;
and step S70, checking the butt joint condition of the peripheral rib plates of the side-push cylinder and the longitudinal and transverse structures of the ship body, and adjusting if the butt joint position is wrong.
As a preferred embodiment of the present invention, in the step S7, the welding sequence is as follows:
step S71, welding the side-push cylinder and the butt joint seam of the side-push sealing cover and the hull longitudinal truss plate;
s72, welding butt joints of the peripheral rib plates and the ship rib plates;
and step S73, welding the butt joint seam of the ship hull outer plate.
In a preferred embodiment of the present invention, in step S71, the peripheral rib plates and the hull stringer plates are welded by symmetric welding.
As a preferred embodiment of the present invention, after the step S7, the method further comprises:
and step S8, welding other parts and/or components.
In a preferred embodiment of the present invention, in each of the step S4 to the step S7, the method further includes the step of monitoring the concentricity of the side thrust cylinder by pulling a wire through the lever.
The invention has the beneficial effects that:
according to the positioning and mounting method for the side-push and side-push sealing cover, the manufacturing accuracy of the section where the side-push is located is controlled, the reference is determined by the vertical mark rod and the marking line before the side-push device is mounted, the reasonable process requirements and accuracy control standards such as the hoisting sequence and the welding sequence are formulated, the side-push device is ensured to be directly and completely positioned and mounted in the section manufacturing stage, and the accuracy meets the requirements; the side-push sealing cover and the hull plate body are subjected to simulated hoisting, the cutting allowance is marked in advance, the positioning precision and the line type smoothness and attractiveness of the hull plate are ensured, and the precision requirement is met; the method has the advantages that a new jig frame is not needed to be added for ground pre-assembly, the construction period is shortened, materials are saved, and the problems that the cost is increased, the concentricity of the side pushing device, the levelness of the motor base of the side pushing device, the line type of the hull plate is difficult to control and the like due to the increase of the materials are solved.
Drawings
FIG. 1 is a schematic view of the positioning and installation method for side-push and side-push closures at a first FR rib site line provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the positioning and installation method for side-push and side-push closures at a second FR rib site line provided by an embodiment of the present invention;
FIG. 3 is a schematic view of a symmetrical welding operation provided by an embodiment of the present invention;
FIG. 4 is a first schematic view of a welding sequence of a side-push and side-push closure according to an embodiment of the present invention;
FIG. 5 is a second schematic view of a welding sequence of a side-push and side-push closure according to an embodiment of the present invention;
FIG. 6 is a third schematic view of a welding sequence of the side-push and side-push closures provided by the embodiment of the present invention;
fig. 7 is a fourth schematic view of a welding sequence of the side-push and side-push closures according to the embodiment of the present invention.
In the figure:
1. a segment centerline; 11. y is 2500mm longitudinal section; 12. y is-2500 mm longitudinal section; 13. y is 1775mm longitudinal section; 14. y is-1875 mm longitudinal section; 2. segmenting the baseline; 3. a first waterline; 4. a second water line;
100. laterally pushing the cylinder body; 101. peripheral rib plates; 200. laterally pushing the sealing cover; 300. a hull outer plate; 400. a marker post; 500. a ground surface; 600. a hull stringer plate; 700. the ship body rib plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
As shown in fig. 1-7, embodiments of the present invention provide a positioning and mounting method for side-push and side-push closures. For convenience of description, the two middle surface lines of the side-push cylinder 100 in the present embodiment are respectively located at the FR137 rib and the FR143 rib, and the positioning Y value reference lines of the side-push cylinder 100 are respectively a longitudinal section line of Y ═ 2500mm, a longitudinal section line of Y ═ 1775mm, and a longitudinal section line of Y ═ 1875mm, and the above values are determined according to the specific structural dimensions of the side-push cylinder 100 and the hull, and are not limited, but are only used as examples.
The positioning and mounting method for the side-push and side-push sealing cover comprises the following steps:
step S1, manufacturing a segmented jig frame, installing a jig frame template in an aligned mode, drawing a segmented center line 1, a first FR rib bit line, a second FR rib bit line and a positioning Y value datum line of the side push barrel 100 on the ground, and determining a segmented base line 2;
in step S1, the allowable deviation of the control level is ± 3mm when the segmented jig is manufactured; when the jig frame template is installed in a line aligning mode, the deviation of the datum line of the template is controlled to be less than or equal to 3 mm. According to the sectional jig frame cross line, a sectional center line 1, an FR137 rib position line, an FR143 rib position line, a Y2500 mm longitudinal section line (11), a Y2500 mm longitudinal section line (12), a Y1775 mm longitudinal section line (13) and a Y1875 mm longitudinal section line (14) are marked on the ground, the marking deviation is controlled to be less than or equal to 2.5mm, and the marking is reserved.
Step S2, respectively installing the mark post 400 on the first FR rib position line and the second FR rib position line, and drawing the first waterline 3 and the second waterline 4 on the mark post 100 according to the segment base line 2 and the segment center line 1;
step S3, determining the allowance of the side-push cylinder 100 according to the machining precision of the side-push sealing cover 200, then measuring the line type of the hull outer plate 300, and performing simulated hoisting on the side-push cylinder 100 and the hull outer plate 300, wherein X shown in figure 1 and Y shown in figure 2 are the allowance of the side-push cylinder 100; adjusting the linear deviation of the side-push sealing cover 200, and performing allowance scribing and trimming on the upper opening of the hull outer plate 300 according to the simulation result; in step S3, the line type of the hull plate 300 is measured by the total station, and simulation hoisting is performed by using simulation software, which is the prior art in the industry, and is not described herein again.
Step S4, hoisting the side-push cylinder 100, assembling and fixing; in this step S4, a laser machine is used for positioning. The left and right positions (Y value) of the side-push cylinder 100 are determined by using the center line (Y is 0) of the motor flange base on the surface of the side-push cylinder 100 corresponding to the corresponding subsection center line 1 of the ground 500, the height value (Z value) of the side-push cylinder 100 is determined by using the center line of the side-push cylinder 100 corresponding to the first water line 3 or the second water line 4 on the scale bar 400, and the front and back values (X value) of the side-push cylinder 100 are determined by using the center line of the side-push cylinder 100 corresponding to the first FR rib position or the second FR rib position on the scale bar 400, and the assembly and fixation are carried out. The side thrust cylinders 100 at the FR137 rib level line and at the FR143 rib level line were assembled as described above.
Step S5, hoisting the side-push sealing cover 200, and assembling and fixing; in this step S5, a laser machine is used for positioning. The left and right positions (Y value) of the side push sealing cover 200 are determined by the longitudinal section line (peripheral rib plate 101) of the side push sealing cover 200 corresponding to the corresponding longitudinal section line of the ground 500, the height value (Z value) of the side push sealing cover 200 is determined by the waterline of the side push sealing cover 200 corresponding to the first waterline 3 or the second waterline 4 on the sighting rod 400, and the front and back values (X value) of the side push sealing cover 200 are determined by the rib position line of the side push sealing cover 200 corresponding to the first FR rib position line or the second FR rib position line on the sighting rod 400, and the assembly and the fixation are carried out. The side push closures 200 at the FR137 rib level and at the FR143 rib level are assembled as described above.
Step S6, welding the side-push cylinder 100 and the side-push sealing cover 200;
and step S7, welding the side push cylinder 100 and the side push sealing cover 200 with the ship structure according to the established welding sequence.
According to the positioning and mounting method for the side-push and side-push sealing cover, the manufacturing accuracy of the section where the side-push device is located is controlled, the standard rod 400 and the marking line are used for determining the reference before the side-push device is mounted, reasonable process requirements and accuracy control standards such as a hoisting sequence and a welding sequence are formulated, the side-push device is ensured to be directly and completely positioned and mounted in the section manufacturing stage, and the accuracy meets the requirements; the side-push sealing cover 200 and the hull plate 300 are subjected to simulated hoisting, and the cutting allowance is marked in advance, so that the positioning precision and the line type smoothness and attractiveness of the hull plate 300 are ensured, and the precision requirement is met; the method has the advantages that the ground pre-assembly is not needed to be carried out by adding a jig, the construction period is shortened, materials are saved, and the problems that the cost is increased, the concentricity of the side pushing device, the levelness of the motor base of the side pushing device, the line type of the hull plate 300 is difficult to control and the like caused by the increase of the materials are solved.
Preferably, the method further comprises the following steps after the step S1 and before the step S2:
step S10, the outer bottom plate is spliced and the tire is loaded, and the inner bottom transverse wall plate assembly and the bottom part in the stem apex cabin are hoisted in sequence;
and step S20, hoisting other side-push bottom components, and completing welding of the welding seams of the segmented structure.
Preferably, step S2 specifically includes the following steps:
step S21, respectively installing the post 400 on the first FR rib position line and the second FR rib position line, and welding and fixing the post with the ground 500;
step S22, respectively leading the first FR rib position line and the second FR rib position line to the respective posts 400;
step S23, leading the segment base line 2 to the benchmark 400;
step S24, respectively marking a first waterline 3 and a second waterline 4 on the mark post 400 by taking the sectional baseline 2 as a reference; in this step, with the segment base line 2 as a reference, the first waterline 3 can be marked on the mark bar 400 at the first FR rib position line as 2400 waterline, as shown in fig. 1, the second waterline 4 can be marked on the mark bar 400 at the second FR rib position line as 2600 waterline, it should be noted that the 2400 waterline and the 2600 waterline are because the central line of the side-push cylinder 100 is respectively 2400mm and 2600mm from the segment base line, in other embodiments, because the structural shape of the side-push device is different, the waterline can be other values, which is not limited to this embodiment.
In step S25, the marker bar 400 is marked with the intersection of the first water line 3 and the first FR rib line and the intersection of the second water line 4 and the second FR rib line. In step S25, the method further includes pulling the wire through the lever 400, and checking the mounting accuracy of the rib structure in step S1.
Preferably, after step S5 and before step S6, the method further comprises:
and S50, rechecking and recording the levelness of the upper plane of the motor base and the concentricity of the side-push cylinder 100, and verifying the hoisting precision of the side-push cylinder 100 and the side-push sealing cover 200 in the steps S4 and S5.
Preferably, in step S6, the side-push cylinder 100 and the side-push cap 200 are welded by symmetrical welding. As shown in fig. 3, the symmetrical welding directions are shown by arrows, and the numbers in the figure represent the welding sequence; and (3) extending and welding from the middle of the side push cylinder body 100 to two sides, and carrying out nondestructive inspection and tightness inspection on the side push cylinder body 100 after welding is finished.
Preferably, after step S6 and before step S7, the method further comprises:
step S60, assembling the slow welding structure and/or slow installation structure in the assembly stage; the slow welding structure and/or slow installation structure in the assembly stage is a structure which influences the hoisting of the side push cylinder body 100 and the side push sealing cover 200 on a ship body, if the structure is installed in advance, the hoisting and welding of the side push cylinder body 100 and the side push sealing cover 200 are influenced, so that the slow welding structure and/or slow installation structure assembly in the assembly stage is carried out after the hoisting and welding of the side push cylinder body 100 and the side push sealing cover 200 are completed, and the installation is more scientific and rapid.
Step S70, the butt joint condition of the peripheral rib plates 101 of the side-push cylinder 100 and the longitudinal and transverse structures of the ship body is checked, the dislocation position is adjusted, and preparation is made for welding the side-push cylinder 100 and the side-push sealing cover 200 with the ship body structure in the next step.
Preferably, in step S7, the welding sequence is as follows:
step S71, welding the side-push cylinder 100 and the butt joint seam of the side-push sealing cover 200 and the hull longitudinal truss plate 600; in step S71, the peripheral rib plate 101 and the hull stringer plate 600 are welded by symmetric welding, as shown in fig. 4, the arrow represents the welding direction, and the number in the figure represents the welding sequence; and welding is simultaneously carried out on the port and the starboard symmetrically. It should be noted that, besides the peripheral rib plate 101, welding is not allowed to be performed at any position of the side thrust cylinder 100, so as to ensure that the performance of the side thrust cylinder 100 is not affected by welding.
Step S72, welding the butt joint seam of the peripheral rib plate 101 and the ship hull rib plate 700; as shown in fig. 5 and 6, the butt joint between the peripheral rib plate 101 and the hull rib plate 700 is welded at the FR137 rib position line and the FR143 rib position line, respectively, the arrows in the figure represent the welding direction, and the numbers in the figure represent the welding sequence.
Step S73, welding the butt joint seam of the ship hull outer plate 300; as shown in fig. 7, the welding direction of the butt joint of the hull plate 300 on the port side is schematically shown, and the numbers in the drawing represent the welding sequence.
Preferably, after step S7, the method further includes:
and step S8, welding other parts and/or components of the segment to complete all installation procedures of the segment.
Preferably, in the step S4-step S7, the method includes the following steps: the steel wire is pulled through the marker post 400, the concentricity of the side push cylinder 100 is monitored, and the installation precision is ensured.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A positioning and mounting method for side-push and side-push sealing covers is characterized by comprising the following steps:
step S1, manufacturing a segmented jig frame, installing a jig frame template in an aligned mode, drawing a positioning Y-value datum line of a segmented center line (1), a first FR rib bit line, a second FR rib bit line and a side push barrel (100) on the ground, and determining a segmented base line (2);
step S2, respectively installing a mark post (400) at the first FR rib position line and the second FR rib position line, and marking a first waterline (3) and a second waterline (4) on the mark post (400) according to the subsection base line (2) and the subsection central line (1);
step S3, determining the allowance of the side-push cylinder (100) according to the machining precision of the side-push sealing cover (200), then measuring the line type of the hull outer plate (300), and carrying out simulated hoisting on the side-push cylinder (100) and the hull outer plate (300); adjusting the linear deviation of the side-push sealing cover (200), and performing allowance scribing and trimming on the upper opening of the hull outer plate (300) according to a simulation result;
step S4, hoisting the side-push cylinder (100), assembling and fixing;
step S5, hoisting the side-push sealing cover (200), and assembling and fixing;
step S6, welding the side-push cylinder (100) and the side-push sealing cover (200);
and S7, welding the side push cylinder (100), the side push sealing cover (200) and the ship structure according to the established welding sequence.
2. The positional mounting method for side-push and side-push closures as claimed in claim 1, further comprising the steps after said step S1 and before said step S2 of:
step S10, splicing the outer bottom plate and the tire, and hoisting the inner bottom transverse wall plate assembly and the inner bottom part of the stem tip cabin in sequence;
and S20, hoisting the side-push bottom assembly and completing welding of the welding seam of the segmented structure.
3. The positioning and mounting method for the side-push and side-push closure according to claim 1, wherein the step S2 specifically comprises the steps of:
step S21, installing the mark post (400) at the first FR rib position line and the second FR rib position line respectively, and welding and fixing the mark post (400) and the ground (500);
step S22, respectively leading the first FR rib position line and the second FR rib position line to the respective mark post (400);
step S23, leading the segmented base line (2) to the benchmark (400);
step S24, the first waterline (3) and the second waterline (4) are respectively scratched on the mark post (400) by taking the segmented base line (2) as a reference;
and step S25, marking the intersection point of the first water line (3) and a first FR rib bit line and the intersection point of the second water line (4) and a second FR rib bit line on the marker post (400).
4. The positional mounting method for side-push and side-push closures of claim 1, further comprising after said step S5 and before said step S6:
and step S50, rechecking and recording the levelness of the upper plane of the motor base and the concentricity of the side-push cylinder (100).
5. The positional mounting method for side-push and side-push closures as claimed in claim 1, wherein in said step S6, said side-push cylinder (100) and said side-push closure (200) are welded by symmetrical welding.
6. The positional mounting method for side-push and side-push closures as claimed in claim 1, further comprising after said step S6 and before said step S7:
step S60, assembling the slow welding structure and/or slow installation structure in the assembly stage;
and S70, checking the butt joint condition of the peripheral rib plates (101) of the side-push cylinder (100) and the longitudinal and transverse structures of the ship body, and if a dislocation exists, adjusting.
7. The positional mounting method for side-push and side-push closures of claim 6, wherein in said step S7, the welding sequence is as follows:
s71, welding the butt joint seam of the peripheral rib plate (101) and the hull stringer plate (600);
s72, welding butt joints of the peripheral rib plates (101) and the ship hull rib plates (700);
and step S73, welding the butt joint seam of the ship hull outer plate (300).
8. The method for positioning and installing side push and side push covers according to claim 7, wherein in step S71, the peripheral rib plates (101) and the hull stringer boards (600) are welded by using symmetrical welding.
9. The positional mounting method for side-push and side-push closures as claimed in claim 1, further comprising after said step S7:
and step S8, welding other parts and/or components.
10. The positional mounting method for side-push and side-push closures as claimed in any one of claims 1 to 9, wherein in said step S4-said step S7, each comprising the step of monitoring the concentricity of said side-push cylinder (100) by pulling a wire through said post (400).
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