CN111776164A - High-precision rapid positioning method for side outer plate body - Google Patents
High-precision rapid positioning method for side outer plate body Download PDFInfo
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- CN111776164A CN111776164A CN202010441943.3A CN202010441943A CN111776164A CN 111776164 A CN111776164 A CN 111776164A CN 202010441943 A CN202010441943 A CN 202010441943A CN 111776164 A CN111776164 A CN 111776164A
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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
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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
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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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 discloses a high-precision and rapid positioning method for a side outer plate body, which comprises the following steps: s1, splicing the side outer plate bodies according to the requirements of the drawing; s2, using two adjacent end faces of the side outer plate as reference edges to serve as end face reference lines, drawing side plate rib bit lines and side plate longitudinal bone lines on the side outer plate by using the end face reference lines as reference edges, installing side plate transverse members and side plate longitudinal members, and adhering a reflection sheet at the measurement point of the side outer plate; s3, taking two adjacent end faces of the deck as reference edges to serve as end face reference lines; s4, folding the side plank and the deck and carrying out primary positioning, carrying out three-dimensional data measurement on the position where the reflector is adhered through a total station, comparing the three-dimensional data with design data, and correcting the position of the side plank when the data error is larger than the design requirement; and S5, completing welding of the side shell plate and the deck. The invention can shorten the positioning time of the side planking, improve the positioning precision and improve the building efficiency of the ship.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a high-precision rapid positioning method for a side outer plate body.
Background
The outer plate fragmentation manufacturing is a common construction mode of the existing semi-three-dimensional fragmentation, the outer plate fragments are generally large in line type, weak in structural strength and easy to change, and the positioning accuracy of the fragments is difficult to control, so that the folding positioning accuracy of the outer plate fragments is always a difficult point item for the control of the fragmentation accuracy. In the past, when an outer plate segment is positioned, a total station is mainly used for carrying out site acquisition on the whole segment, acquired data is compared and analyzed with theoretical data through computer segmentation analysis software, and finally an analysis result is sent to a site for correction operation. When the traditional mode is fixed a position, generally can carry out data acquisition after on-the-spot scaffold is set up, and in case precision problem appears, the fragment probably will shift wholly, just need carry out data acquisition analysis again thereupon, and it is long consuming time.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a high-precision and rapid positioning method for a side plank body, which can shorten the positioning time of a side plank, improve the positioning precision and improve the building efficiency of a ship.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a high-precision and rapid positioning method for a side outer plate body, which comprises the following steps:
s1, splicing the side outer plate bodies according to the requirements of the drawing;
s2, using two adjacent end faces of the side outer plate as reference edges to serve as end face reference lines, drawing side plate rib bit lines and side plate longitudinal bone lines on the side outer plate by using the end face reference lines as reference edges, installing side plate transverse members and side plate longitudinal members, and adhering a reflection sheet at the measurement point of the side outer plate;
s3, taking two adjacent end surfaces of the deck as reference edges to be end surface reference lines, scribing a deck rib bit line and a deck longitudinal bone line on the deck by taking the end surface reference lines as reference, installing a deck transverse member and a deck longitudinal member, taking the end surface reference lines of the deck as reference lines, checking the squareness of the deck, and cutting the end surface allowance of the deck;
s4, folding the side plank and the deck and carrying out preliminary positioning, after the preliminary positioning is finished, carrying out three-dimensional data measurement on the position where the reflector is adhered through a total station, comparing the three-dimensional data with design data, and correcting the position of the side plank when the data error is larger than the design requirement;
and S5, completing welding of the side shell plate and the deck.
As a preferred technical solution, the step S1 is specifically as follows: the method comprises the steps of manufacturing a jig frame according to the outboard plate body, placing the jig frame on the ground, adjusting the horizontal precision of the jig frame to be +/-2 mm, drawing an outboard plate splicing ground wire coordinate on the ground, selecting two allowance-free edges of the outboard plate as reference edges to splice the first outboard plate body, projecting corresponding points on the outboard plate body to the ground by adopting a plumb bob, detecting the coincidence degree with the outboard plate splicing ground wire coordinate, and sequentially splicing the rest outboard plate bodies by adopting the same method to obtain the outboard plate.
As a preferred technical solution, the step S2 is specifically as follows: selecting two margin-free edges of the side outer plate as reference edges, drawing intersection points of a side plate transverse member and a side plate longitudinal member, intersection points of the side plate transverse member and a side outer plate edge line and intersection points of the side plate longitudinal member and the side outer plate edge line on the side outer plate, sequentially connecting the corresponding intersection points to obtain a side plate rib line and a side plate longitudinal line, and installing and welding the side plate transverse member and the side plate longitudinal member.
As a preferred technical solution, the step S3 is specifically as follows: taking the allowance-free end face of the deck as a reference edge as a first end face reference line, taking the distance between the end face reference line and the corresponding reference edge as 147mm, taking the first end face reference line as a reference, marking the position of the first end face reference line which is 147mm away from an end point as a point A, and marking the position of the first end face reference line on the first end face as a point AArbitrarily selecting one point on the reference line as a point B, selecting one point on the deck as a point C, wherein the relation among the point A, the point B and the point C should meet the requirement of AB2+AC2＝BC2And the connecting line of the point A and the point C is a second end surface datum line.
Preferably, a point is taken on the first end face reference line according to drawing requirements with the second end face reference line as a starting point, a line parallel to the second end face reference line is drawn on the deck with the point taken on the first end face reference line as a starting point to serve as a deck rib bit line, a point is taken on the second end face reference line according to drawing requirements with the first end face reference line as a starting point, and a line parallel to the first end face reference line is drawn on the deck with the point taken on the second end face reference line as a starting point to serve as a deck longitudinal skeleton line.
Preferably, in step S3, an auxiliary reference line is scribed on the deck according to a theoretical size of the deck from the end surface reference line as a starting point, and a distance between the auxiliary reference line and an adjacent end surface thereof is measured and compared with a theoretical value to form a margin trimming line.
Preferably, in step S4, when the side shell is initially positioned, an angle steel is welded to a top outer edge of the side shell, an angle between the angle steel and the side shell is equal to a theoretical angle between the side shell and the deck, any point on the top outer edge of the side shell is defined as a point D, a theoretical projection point of the point D on the deck is a point E, coordinates of the point E are obtained and marked on the deck, a plumb bob is hung at any point on the angle steel, a straight line where the plumb bob is located is defined as a line F, and the angle between the side shell and the deck is adjusted until a distance between the point D and the line F is equal to a distance between the point E and the line F.
Preferably, in step S4, when the adjacent decks are welded, the weld is V-shaped and the width of the weld is 6 mm.
Preferably, in step S5, a welding anti-deformation margin is provided to the side outer plate before welding the side outer plate to the deck, and the anti-deformation margin is provided by adjusting the top of the side outer plate by 5mm in a direction out of the deck.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the reflector plate is pre-pasted at the position to be monitored in advance, when the field positioning is carried out, the total station can be directly used for carrying out data acquisition and calculating and analyzing the data without waiting for the completion of the erection of the scaffold, the position with out-of-precision is directly adjusted and corrected by using the tool, the data acquisition time is reduced, and the positioning efficiency of the side outer plate is improved.
(2) According to the invention, the angle steel and the plumb bob are arranged to preliminarily position the side planking, so that the positioning state of the side planking is monitored in real time, the positioning precision of the side planking is ensured, repeated measurement in the positioning process is avoided, the repair and adjustment times are reduced, and the positioning precision of the side planking is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the side outer plate assembly of the present invention.
Fig. 2 is a schematic diagram of the method for marking the end surface datum line of the deck.
FIG. 3 is a schematic structural view of the welding of the side shell and the deck of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment provides a high-precision positioning method for a side outer plate body, which comprises the following steps:
and S1, assembling the side outer plate bodies according to the requirements of the drawing. Manufacturing a jig frame according to the outboard plate body, placing the jig frame on the ground, adjusting the horizontal precision of the jig frame to +/-2 mm, drawing an outer plate splicing plate ground wire coordinate on the ground, selecting two no-allowance edges of the outboard plate as reference edges to assemble a first outboard plate body, projecting corresponding points on the outboard plate body onto the ground by using a plumb bob, detecting the coincidence degree with the outer plate splicing plate ground wire coordinate (checking the coincidence degree of three points a, g and e and the ground wire coordinate), sequentially assembling two outboard plate bodies adjacent to the first outboard plate body by using the same method, projecting corresponding points on the outboard plate body onto the ground by using the plumb bob, detecting the coincidence degree with the outer plate splicing plate ground wire coordinate (checking the coincidence degree of four points g, b, e and c and the ground wire coordinate), finally assembling a fourth outboard plate body, projecting corresponding points on the outboard plate body onto the ground by using the plumb bob, and (5) detecting the contact ratio with the ground wire coordinate of the jointed board of the outer board (checking the contact ratio of the three points h, d and f and the ground wire coordinate), and obtaining the side outer board.
S2, two adjacent end faces of the side plank are used as reference edges to serve as end face reference lines, the side plank rib bit lines and side plank longitudinal bone lines are scribed on the side plank by taking the end face reference lines as references, the side plank transverse members and the side plank longitudinal members are installed, a reflector plate is pasted at the measuring point of the side plank, so that under the condition that the side plank is positioned without a scaffold, the lower port structure of a segment is convenient for an instrument to pick up points, and the reflector plate is arranged at the main structure of the segment, such as the intersection points of each rib plate and the outer plank at the lower port of the outer plank, the intersection points of the deck and the longitudinal/transverse cabin wall plate, the outer plank at the fore-aft end face and angle steel or T row intersection points and other theoretical data are extracted. Selecting two margin-free edges of the board side outer plate as reference edges (ab and ac edges), drawing intersection points of a lateral plate transverse member and a lateral plate longitudinal member, intersection points of the lateral plate transverse member and a board side outer plate edge line and intersection points of the lateral plate longitudinal member and the board side outer plate edge line on the board side outer plate, sequentially connecting the corresponding intersection points to obtain a lateral plate rib line and a lateral plate longitudinal line, installing the lateral plate transverse member and the lateral plate longitudinal member, and welding.
And S3, taking two adjacent end surfaces of the deck as reference edges to serve as end surface reference lines, scribing a deck rib bit line and a deck longitudinal bone line on the deck by taking the end surface reference lines as reference edges, and installing a deck transverse member and a deck longitudinal member. The method specifically comprises the following steps: the end face without allowance of the deck is used as a reference edge to serve as a first end face reference line (150M.K reference line), when the deck is in butt joint with the deck, a 6mm plate seam gap needs to be reserved, the shape of the plate seam gap is V-shaped, and therefore the distance between the end face reference line and the corresponding reference edge is 147 mm. Taking the first end surface datum line as a reference to serve as a second end surface datum line, marking the position of the first end surface datum line, which is 147mm away from the end point, as a point A, arbitrarily taking one point on the first end surface datum line to mark as a point B, selecting one point on a deck to mark as a point C, and enabling the relation among the point A, the point B and the point C to meet the requirement of AB2+AC2＝BC2And the connecting line of the point A and the point C is a second end surface datum line. Taking a point on a first end face reference line according to drawing requirements with a second end face reference line as a starting point, drawing a line parallel to the second end face reference line on a deck with the point on the first end face reference line as the starting point to serve as a deck rib bit line, taking the first end face reference line as the starting point on the second end face reference line according to the drawing requirements, drawing a line parallel to the first end face reference line on the deck with the point on the second end face reference line as a deck longitudinal bone line with the end face reference line as the starting point, drawing an auxiliary reference line on the deck according to the theoretical size of the deck, measuring the distance between the auxiliary reference line and the adjacent end face of the auxiliary reference line, and comparing the distance with the theoretical value to make a margin trimming line.
S4, folding the side planking and the deck and conducting preliminary positioning, when the side planking is preliminarily positioned, angle steel is welded at the outer port of the top of the side planking, the included angle between the angle steel and the side planking is equal to the theoretical included angle between the side planking and the deck, any point on the outer port of the top of the side planking is defined as a point D, the theoretical projection point of the point D on the deck is a point E, the coordinate of the point E is obtained and marked on the deck, a plumb bob is hung at any point on the angle steel, the straight line where the plumb bob is located is defined as a line F, and the angle between the side planking and the deck is adjusted until the distance between the point D and the line F is equal to the distance between the point E and the line F. After the preliminary determination is finished, the three-dimensional data measurement is carried out on the position where the reflector plate is adhered through the total station, the three-dimensional data measurement is compared with design data, and when the data error is larger than the design requirement, the position of the side board is corrected.
And S5, completing welding of the side shell plate and the deck. Before the side planks are welded with the deck, welding reversible deformation allowance is arranged on the side planks, the top of the side planks is adjusted to be 5mm towards the direction outside the deck, and the side planks are prevented from falling inwards during welding.
Compared with the original positioning method, the original positioning method is from the positioning and folding of the outboard plate to the end of the positioning and adjustment of the segment, the measurement is generally carried out 2-3 times in the process, the duration is from one day to two days, the main time is the segmented measurement and analysis time, if a plurality of segmented positioning are met, the duration is longer, after the positioning is carried out by the method, the segmented positioning time is shortened to 1 hour, the time is saved by at least one day, the single segmented tire position is calculated according to the tire position period, 15, 10, 4, 600 (tire length, 15, width, 10m) of the single segmented tire position is saved in one day, the single segmented positioning needs assembling workers, the single man-hour is calculated according to 40 yuan/man-hour, three workers and the like need about 40, 3, 960, the statistics calculation according to the labor cost and the tire position cost is carried out, about 1560 yuan is saved altogether, and the method can be used for positioning about 150 segments by the method at present time, the cost of a single ship can be saved by about 1560 x 150 ═ 234000 yuan.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (9)
1. A high-precision rapid positioning method for a side outer plate body is characterized by comprising the following steps:
s1, splicing the side outer plate bodies according to the requirements of the drawing;
s2, using two adjacent end faces of the side outer plate as reference edges to serve as end face reference lines, drawing side plate rib bit lines and side plate longitudinal bone lines on the side outer plate by using the end face reference lines as reference edges, installing side plate transverse members and side plate longitudinal members, and adhering a reflection sheet at the measurement point of the side outer plate;
s3, taking two adjacent end surfaces of the deck as reference edges to be end surface reference lines, scribing a deck rib bit line and a deck longitudinal bone line on the deck by taking the end surface reference lines as reference, installing a deck transverse member and a deck longitudinal member, taking the end surface reference lines of the deck as reference lines, checking the squareness of the deck, and cutting the end surface allowance of the deck;
s4, folding the side plank and the deck and carrying out preliminary positioning, after the preliminary positioning is finished, carrying out three-dimensional data measurement on the position where the reflector is adhered through a total station, comparing the three-dimensional data with design data, and correcting the position of the side plank when the data error is larger than the design requirement;
and S5, completing welding of the side shell plate and the deck.
2. The method for quickly positioning a broadside sheet body with high precision as recited in claim 1, wherein said step S1 is specifically as follows: the method comprises the steps of manufacturing a jig frame according to the outboard plate body, placing the jig frame on the ground, adjusting the horizontal precision of the jig frame to be +/-2 mm, drawing an outboard plate splicing ground wire coordinate on the ground, selecting two allowance-free edges of the outboard plate as reference edges to splice the first outboard plate body, projecting corresponding points on the outboard plate body to the ground by adopting a plumb bob, detecting the coincidence degree with the outboard plate splicing ground wire coordinate, and sequentially splicing the rest outboard plate bodies by adopting the same method to obtain the outboard plate.
3. The high-precision rapid positioning method for the side plate body according to claim 2, wherein the step S2 is as follows: selecting two margin-free edges of the side outer plate as reference edges, drawing intersection points of a side plate transverse member and a side plate longitudinal member, intersection points of the side plate transverse member and a side outer plate edge line and intersection points of the side plate longitudinal member and the side outer plate edge line on the side outer plate, sequentially connecting the corresponding intersection points to obtain a side plate rib line and a side plate longitudinal line, and installing and welding the side plate transverse member and the side plate longitudinal member.
4. The method for quickly positioning a broadside sheet body with high precision as recited in claim 1, wherein said step S3 is specifically as follows: taking a non-allowance end face of a deck as a reference edge as a first end face reference line, taking the distance between the end face reference line and the corresponding reference edge as 147mm, taking the first end face reference line as a reference as a second end face reference line, marking a position 147mm away from an end point of the first end face reference line as a point A, arbitrarily marking one point on the first end face reference line as a point B, selecting one point on the deck as a point C, and enabling the relation among the point A, the point B and the point C to meet the requirement of AB2+AC2＝BC2And the connecting line of the point A and the point C is a second end surface datum line.
5. A high-precision rapid positioning method for a side plate body according to claim 4, wherein a point is taken on the first end face reference line from the second end face reference line as a starting point according to a drawing requirement, a line parallel to the second end face reference line is drawn on the deck from the point taken on the first end face reference line as a deck rib bit line, a point is taken on the second end face reference line from the first end face reference line as a starting point according to the drawing requirement, and a line parallel to the first end face reference line is drawn on the deck from the point taken on the second end face reference line as a deck longitudinal line.
6. The method for quickly positioning an outboard plate body with high accuracy as claimed in claim 1, wherein in said step S3, an auxiliary reference line is scribed on the deck according to the theoretical size of the deck from the end surface reference line as a starting point, and the distance between the auxiliary reference line and its adjacent end surface is measured and compared with the theoretical value to make a margin cutting line.
7. The method as claimed in claim 1, wherein in step S4, when the side plank is initially positioned, angle steel is welded to the top outer edge of the side plank, the angle steel and the side plank are equal to the theoretical angle between the side plank and the deck, any point on the top outer edge of the side plank is defined as point D, the theoretical projection point of the point D on the deck is defined as point E, the coordinate of the point E is obtained and marked on the deck, a plumb bob is hung at any point on the angle steel, the straight line where the plumb bob is located is defined as line F, and the angle between the side plank and the deck is adjusted until the distance between the point D and the line F is equal to the distance between the point E and the line F.
8. The method for quickly positioning a side plate body with high precision as recited in claim 1, wherein in the step S4, when the adjacent decks are welded, the shape of the weld is V-shaped, and the width of the weld is 6 mm.
9. The method for quickly positioning an outboard panel body with high precision as claimed in claim 1, wherein in said step S5, a welding anti-deformation allowance is provided for the outboard panel before the outboard panel is welded to the deck, and the anti-deformation allowance is provided by adjusting the top of the outboard panel to a direction outside the deck by 5 mm.
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| CN112373648A (en) * | 2020-11-23 | 2021-02-19 | 上海外高桥造船有限公司 | Method for constructing cruise ship |
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| CN113859472B (en) * | 2021-10-21 | 2022-08-16 | 上海外高桥造船有限公司 | Positioning and mounting method and ship body |
| CN114044107A (en) * | 2021-12-02 | 2022-02-15 | 沪东中华造船(集团)有限公司 | Two-dimensional positioning method for ship broadside segment segmentation folding |
| CN114379728A (en) * | 2021-12-17 | 2022-04-22 | 沪东中华造船(集团)有限公司 | Method for positioning upper bottom subsection and side subsection of heavy lift vessel |
| CN114379728B (en) * | 2021-12-17 | 2024-03-26 | 沪东中华造船(集团)有限公司 | Positioning method for bottom section and side section on heavy crane ship |
| CN114735153A (en) * | 2022-04-06 | 2022-07-12 | 江南造船(集团)有限责任公司 | Hoisting and positioning process and device for movable deck of roll-on-roll-off ship |
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