CN114589547A

CN114589547A - Line drawing method for container foot opening

Info

Publication number: CN114589547A
Application number: CN202210355028.1A
Authority: CN
Inventors: 刘文杰; 黄远龙; 苟建刚; 叶彬
Original assignee: Guangzhou Shipyard International Co Ltd
Current assignee: Guangzhou Shipyard International Co Ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-06-07
Anticipated expiration: 2042-04-06
Also published as: CN114589547B

Abstract

The invention relates to the technical field of ship construction, in particular to a line drawing method for opening holes in container legs of a container. The line drawing method for the container foot opening uses a half-width line as a reference to acquire coordinates of mark points of a container foot in an installation area, and converts mark point groups into a design drawing of a ship. Then through the processing and correction of data, the box feet of the container fall into each correction line, the regularity of the container is guaranteed, then a plurality of vertical lines are drawn according to the size and the installation distance of the container to be installed, and the intersection points formed by the vertical intersection of the plurality of vertical lines and the plurality of correction lines are the installation position coordinates of the box feet. And finally, forming holes in the installation area of the deck according to the corrected installation position coordinates in the design drawing to obtain installation holes. The line drawing method for the container foot opening can improve the opening precision on the deck and the installation precision of the container foot, so that the container in the installation area is kept orderly, and the edge of the installation area of the container has good straightness.

Description

Line drawing method for container foot opening

Technical Field

The invention relates to the technical field of ship construction, in particular to a line drawing method for opening holes in container legs of a container.

Background

On large ships, especially cargo ships, containers need to be placed on the deck to complete the construction of the ship deck.

At present, a method for determining the installation position of a ship container comprises the following steps: after the main deck is carried, and after welding of the closure seams of the relevant areas for installing the containers is finished, the positions of the container feet of the containers are determined one by one in the corresponding installation areas according to the sizes of the containers and the design intervals of the adjacent containers, and then line drawing, hole opening and welding are carried out. Due to the accumulation of errors in ship body construction, if simply drawing lines and perforating holes on a deck according to the design size of a drawing, the positions of containers in the same installation range are irregular, the installation accuracy is poor, the straightness of the side lines of an installation area is poor, and the ship construction quality is affected.

Therefore, a method for drawing a line for opening a container foot is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a line drawing method for opening holes in container legs of a container, which aims to improve the accuracy of the holes on a deck, thereby improving the installation accuracy of the container and ensuring that the edge of an installation area of the container has good straightness.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a line drawing method for opening a hole on a container foot comprises the following steps

S1: marking points of box feet are drawn in an installation area of a container on a deck;

s2: measuring a half-width line in a dock, and collecting coordinates of the mark points by taking the half-width line as a reference to obtain an array-shaped mark point group, wherein the extending direction of each row of mark points is parallel to the direction of the half-width line;

s3: drawing a datum line in the mounting area, wherein the datum line is parallel to the half-width line;

s4: measuring the distance values between one row of mark points in the mark point group and the reference line respectively, and calculating the average value h of a plurality of distance values; drawing a correction line B close to the corresponding column coordinate point in the installation area, wherein the correction line B is parallel to the datum line and has a distance of h;

s5: drawing correction lines corresponding to other column marking points in the installation area according to the size and the installation distance of the container to be installed by taking the correction line B as a reference;

s6: connecting one line of mark points to form a vertical line F of the correction line B, drawing vertical lines corresponding to other line mark points in the installation area according to the size and the installation distance of the container to be installed by taking the vertical line F as a reference, wherein the intersection point formed by vertically crossing the plurality of vertical lines and the plurality of correction lines is the installation position coordinate of the box foot;

s7: and opening holes in the mounting area according to the mounting position coordinates of the box legs, so that mounting holes are formed in the deck.

Preferably, in step S2, coordinates of the marker point are measured and acquired by a total station.

As a preferred scheme, acquiring the height value of each mark point through the total station; and when the height value of the marking point is larger than a preset value, correcting the area where the marking point is located so as to enable the outer surface of the deck to be horizontal.

Preferably, step S6 further includes step

S61: and measuring a deviation value between each mark point and the corresponding mounting position coordinate along the extending direction of the correction line and the extending direction of the perpendicular line.

Preferably, step S61 is followed by step

S62: and moving the marking points on the deck to the coordinates of the installation positions of the box legs according to the measured deviation values, and marking and drawing lines again.

Preferably, step S62 is followed by step

S63: and checking whether the coordinates of the mounting position obtained after marking the line on the deck again are accurate or not according to the size and the mounting distance of the container to be mounted.

Preferably, in step S7, a semi-automatic flame cutting machine cuts a hole around the mounting position coordinate to obtain the mounting hole.

Preferably, in step S7, the box pin punch marks and the mounting hole marks are aligned one by one and then welded.

Preferably, the box legs are connected with the corresponding mounting holes through carbon dioxide gas protection welding.

Preferably, the line drawing method for the container foot opening hole further comprises the step of

S8: and after the box feet are welded, measuring and verifying the straightness of the edge of the mounting area.

The beneficial effects of the invention are as follows:

the invention provides a line drawing method for opening holes in container legs. Then through the processing and correction of data, the box feet of the container fall into each correction line, the regularity of the container is guaranteed, then a plurality of vertical lines are drawn according to the size and the installation distance of the container to be installed, and the intersection points formed by the vertical intersection of the plurality of vertical lines and the plurality of correction lines are the installation position coordinates of the box feet. And finally, forming holes in the installation area of the deck according to the corrected installation position coordinates in the design drawing to obtain installation holes. The line drawing method for the container foot opening can improve the opening precision on the deck and the installation precision of the container foot, so that the container in the installation area is kept orderly, and the edge of the installation area of the container has good straightness.

Drawings

Fig. 1 is a main flow chart of a line drawing method for opening a container foot according to an embodiment of the invention;

FIG. 2 is a first schematic structural diagram of data processing on a design drawing according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram II of data processing on a design drawing according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram three of data processing on a design drawing according to an embodiment of the present invention.

The component names and designations in the drawings are as follows:

10. a half-width line; 20. a reference line; 30. correcting the line; 40. a vertical line;

1. marking points; 2. and (7) installing holes.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

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", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular 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.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

At present, the positions of container feet of a container are determined one by one after lines are drawn in the corresponding installation area of a deck according to the original design size in a ship design drawing, and then holes are formed and welded to complete the installation of the container. Due to the accumulation of errors of the ship body construction, the installation positions of the containers in the installation area are irregular easily, and the precision is poor, so that the straightness of the side line of the installation area is poor, and the construction quality of the ship is affected.

In order to solve the above problems, as shown in fig. 1 to 4, this embodiment discloses a method for drawing an opening of a container foot, which includes the following steps

S1, marking point 1 of the box foot is drawn in the installation area of the container on the deck.

And S2, measuring the half-width line 10 in the dock, and acquiring the coordinates of the mark points 1 by taking the half-width line 10 as a reference to obtain an array-shaped mark point group, wherein the extending direction of each row of the mark points 1 is parallel to the direction of the half-width line 10.

S3, drawing a reference line 20 within the installation area, the reference line 20 being parallel to the half-width line 10.

And S4, measuring the distance between one column of the mark points 1 in the mark point group and the reference line 20, and calculating the average value h of a plurality of distance values. A correction line B is drawn in the mounting area close to the corresponding column coordinate point, parallel to the reference line 20 and at a distance h.

And S5, drawing the correction lines 30 corresponding to the other column mark points 1 in the installation area according to the size and the installation distance of the container to be installed by taking the correction line B as a reference.

And S6, connecting one line of mark points 1 to form a vertical line 40 of a correction line B, drawing vertical lines 40 corresponding to other line of mark points 1 in an installation area according to the size and the installation distance of a container to be installed by taking the vertical line F as a reference, wherein the intersection point formed by vertically crossing the plurality of vertical lines 40 and the plurality of correction lines 30 is the installation position coordinate of the box foot.

At S7, holes are formed in the mounting area based on the coordinates of the mounting positions of the box legs, thereby forming mounting holes 2 in the deck.

In the present embodiment, the coordinates of the marker points 1 of the box leg in the installation area are first collected with the half-width line 10 as a reference, and the marker point group is converted into the design drawing of the ship. Then through the processing and correction of data, the container feet of the container fall into each correction line 30, the neatness of the container is guaranteed, then a plurality of vertical lines 40 are drawn according to the size and the installation distance of the container to be installed, and the intersection points formed by the vertical intersection of the plurality of vertical lines 40 and the plurality of correction lines 30 are the installation position coordinates of the container feet. And finally, forming a hole in the mounting area of the deck according to the corrected mounting position coordinate in the design drawing to obtain a mounting hole 2. The line drawing method for the container foot opening can improve the opening precision on the deck and the installation precision of the container foot, so that the container in the installation area is kept orderly, and the edge of the installation area of the container has good straightness.

In step S1, marking points of the box legs on the deck according to the initial design points in the ship design drawing requires an operator to draw lines on the deck.

In step S2, the coordinates of the marker point 1 are measured and acquired by the total station. The total station has small volume and light weight, is flexible and changeable to use, can not be influenced by terrain limitation and external factors, can quickly and accurately acquire the accurate coordinates of the mark point 1 on the deck, and is favorable for improving acquisition precision.

Specifically, coordinate values of each mark point 1 are marked on a deck in a ship design drawing by a coordinate point measured by the total station through a coordinate system conversion method, and the mark points 1 marked on the ship design drawing are distributed in an array manner. The accumulated error due to the construction requires data processing to correct the deviation of each marking point 1, thereby improving the installation accuracy of the container.

In this embodiment, the height value of each marking point 1, that is, the horizontal height of the deck position where the marking point 1 is located, may also be obtained by the total station. And when the height value of the marking point 1 is greater than the preset value, correcting the area where the marking point 1 is located so as to enable the outer surface of the deck to be horizontal. The preset value needs to meet the construction requirement of the levelness of the deck, and when the height value of the mark point 1 is larger than the preset value, the abnormal level of the area of the deck is indicated, the poor levelness is indicated, and the correction can be performed through operations such as polishing. Since the method of straightening the deck is a routine operation in the field of ship construction, it will not be described in detail here. Therefore, the state of the levelness of the deck can be analyzed through the total station, so that a constructor can correct and process the container feet of the container before installation, subsequent reworking is avoided, and the construction efficiency and the construction quality of the ship are improved.

In steps S3 to S6, the coordinate data of the marker 1 is corrected, and the correction may be performed on the ship design drawing. Specifically, in step S3, the reference line 20 is located on the installation area of the deck within the ship design drawing.

In the present embodiment, the half-width line 10 in the dock is located at a distance of 39145.6mm from the center line of the hull, and in order to plot the half-width line 10 on the ship design drawing, the position of the half-width line 10 may be adjusted, as shown in fig. 2, a new half-width line 10 (located at a distance of 26000mm from the center line of the hull) is plotted on the deck of the ship design drawing, and the two half-width lines 10 are parallel to each other.

As shown in fig. 2, the present embodiment will be described by taking the mounting of the legs of six containers as an example. Of course, the number of containers may be adjusted according to the building requirements of the ship, and is not particularly limited herein. After the datum line 20 (datum line a) is drawn in the installation area, the distance values h1, h2, h3, h4, h5 and h6 between each coordinate point in one row of marking points 1 and the datum line 20 can be intuitively obtained through a measuring tool of drawing software, and the average value h of a plurality of distance values is calculated, wherein in the embodiment, h is (h1+ h2+ h3+ h4+ h5+ h 6)/6.

Note that the circle center point of a plurality of circles in fig. 2 is a coordinate point 1, the circles in fig. 3 and 4 indicate the mounting hole 2, and the circle center point of the mounting hole 2 is a corrected mounting position coordinate point of the box pin.

As shown in fig. 3, a correction line B is drawn on the deck of the ship design drawing, the correction line B is parallel to the reference line 20 and has a distance h, and the corresponding row of marking points 1 are all adjusted to the correction line B. Then, correction lines 30 corresponding to other columns of marking points 1 are drawn in the installation area based on the size and the installation pitch of the container to be installed with the correction lines 30B as reference, which are C, D and E in fig. 3. The box legs of the three containers are respectively arranged on the correction line C and the correction line D, the box legs of the other three containers are respectively arranged on the correction line B and the correction line E, and the installation distance of the containers along the ship width direction is arranged between the correction line B and the correction line C. Because the four correction lines 30 are parallel to each other, the container can be kept neat.

As shown in fig. 4, a perpendicular line F connecting one row of the marking points 1 to form a correction line B is used as a reference, and perpendicular lines 40 corresponding to other rows of the marking points 1 are drawn in the installation area according to the size and the installation distance of the container to be installed. The intersection point formed by the plurality of perpendicular lines 40 and the plurality of correction lines 30 being the coordinates of the mounting position of the box pin.

Step S61 is further included at step S6, and a deviation value between each marking point 1 and the corresponding mounting position coordinate in the extending direction of the correction line 30 and the extending direction of the perpendicular line 40 is measured. The deviation value of each marking point 1 to be moved can be intuitively obtained by a measuring tool of the drawing software.

Step S62 is further included after step S61, the marking point 1 is moved on the deck to the coordinates of the mounting position of the box foot according to the measured deviation value, and marking lines are newly drawn. The original marking points 1 on the deck are shifted and marked again manually for subsequent inspection and hole opening.

And step S63 is further included after the step S62, whether the coordinates of the mounting position obtained after the line is marked again on the deck is accurate is checked according to the size and the mounting distance of the container to be mounted, so that the accuracy of the corrected marking point 1 is ensured, reworking caused by deviation of the punching position is avoided, and the punching precision is favorably ensured.

Specifically, in step S7, a hole is cut by the semiautomatic flame cutting machine with the mounting position coordinates as the center of a circle to obtain the mounting hole 2, thereby improving the punching efficiency and the punching quality.

After the punching operation is completed on the deck, in step S7, the box pin punching marks and the mounting hole 2 marks are aligned one by one and then welded. Specifically, the box foot passes through carbon dioxide gas protection welded connection with mounting hole 2 that corresponds to improve welding quality, strengthened the joint strength and the stability of container of box foot and deck.

Finally, the method for drawing the opening of the container foot further comprises a step S8, when the welding of the container foot is completed, the straightness of the edge of the installation area is measured and verified. By measuring the straightness of the edge of the installation area, the regularity of the installation area is further verified, and the construction quality of the ship is ensured.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A line drawing method for opening a hole on a container foot is characterized by comprising the following steps

S1: drawing a mark point (1) of a box foot in an installation area of a container on a deck;

s2: measuring a half-width line (10) in a dock, and acquiring coordinates of the mark points (1) by taking the half-width line (10) as a reference to obtain an array-shaped mark point group, wherein the extending direction of each column of mark points (1) is parallel to the direction of the half-width line (10);

s3: drawing a reference line (20) in the mounting area, wherein the reference line (20) is parallel to the half-width line (10);

s4: measuring the distance values between one row of mark points (1) in the mark point group and the reference line (20) respectively, and calculating the average value h of a plurality of distance values; drawing a correction line B close to the corresponding column coordinate point in the installation area, wherein the correction line B is parallel to the datum line (20) and the distance between the correction line B and the datum line is h;

s5: drawing correction lines (30) corresponding to other column mark points (1) in the installation area according to the size and the installation distance of the container to be installed by taking the correction line B as a reference;

s6: connecting one row of mark points (1) to form a vertical line F of the correction line B, drawing vertical lines (40) corresponding to other row mark points (1) in the installation area according to the size and the installation distance of the container to be installed by taking the vertical line F as a reference, wherein the intersection point formed by vertically crossing a plurality of vertical lines (40) and a plurality of correction lines (30) is the installation position coordinate of the box foot;

s7: and (3) forming holes in the mounting area according to the mounting position coordinates of the box feet, so as to generate mounting holes (2) in the deck.

2. The method for drawing out a container foot opening as claimed in claim 1, wherein in step S2, the coordinates of said marking point (1) are measured and acquired by a total station.

3. The method for drawing lines in container foot openings as claimed in claim 2, wherein the height value of each of said marking points (1) is obtained by said total station; when the height value of the marking point (1) is larger than a preset value, correcting the area where the marking point (1) is located so as to enable the outer surface of the deck to be horizontal.

4. The method for drawing the opening of the container foot of claim 1, further comprising the step of drawing a hole in the container foot at step S6

S61: and measuring deviation values between each mark point (1) and the corresponding installation position coordinate along the extension direction of the correction line (30) and the extension direction of the perpendicular line (40).

5. The method for drawing the opening of the container foot according to claim 4, wherein the step S61 is followed by a step

S62: and moving the marking points (1) to the coordinates of the installation positions of the box legs on the deck according to the measured deviation values, and marking and drawing lines again.

6. The method for drawing the opening of the container foot of claim 5, wherein the step S62 is followed by a step

7. The method for drawing out an opening of a container foot as claimed in claim 6, wherein in step S7, an opening is cut by a semiautomatic flame cutter with the mounting position coordinates as a center to obtain the mounting hole (2).

8. The method for drawing the open hole of the container foot according to the claim 1, wherein in the step S7, the punched mark of the container foot and the mark of the mounting hole (2) are aligned one by one and then welded.

9. A method for drawing out an opening in a container foot according to claim 8, characterised in that the foot is connected to the corresponding mounting hole (2) by means of carbon dioxide gas welding.

10. The method of claim 9, further comprising the step of drawing a line through the opening of the container foot