CN115140266A - Control method for ship hull broadside double-beveling segmented horizontal type overall assembly carrying precision - Google Patents
Control method for ship hull broadside double-beveling segmented horizontal type overall assembly carrying precision Download PDFInfo
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- CN115140266A CN115140266A CN202210792519.2A CN202210792519A CN115140266A CN 115140266 A CN115140266 A CN 115140266A CN 202210792519 A CN202210792519 A CN 202210792519A CN 115140266 A CN115140266 A CN 115140266A
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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
- B63B73/60—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by the use of specific tools or equipment; characterised by automation, e.g. use of robots
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
A control method for horizontal total assembly carrying precision of ship hull broadside double-beveling subsection is characterized in that a reference subsection is placed in a carrying site, the reference subsection and a carried subsection are combined to form a total section, two points are selected at will in the carrying site before carrying, after a three-dimensional coordinate system is formed by building stations for the two ground sample points, each measuring point of the reference subsection is measured to obtain an actual three-dimensional coordinate of each measuring point, the actual three-dimensional coordinate of the reference subsection is combined with a theoretical coordinate of the reference subsection and a theoretical coordinate of the total section to obtain an actual three-dimensional coordinate of the total section, and further the three-dimensional coordinate of the carried subsection is obtained. The shipboard double-inclined segmentation horizontal assembling method has the advantages that the shipboard double-inclined segmentation is horizontally assembled, the hoisting time is reduced, the possibility of segmented hoisting reset is eliminated, the precision quality in the segmented assembling process is improved, the potential safety hazard is thoroughly eliminated, the shipbuilding period can be continuously shortened, the production and construction cost is reduced, and the production efficiency is effectively improved. The invention is suitable for all types of subsection general assembly carrying operation.
Description
Technical Field
The invention belongs to the field of ship construction and building, and relates to a control method for horizontal type total assembly and carrying precision of ship broadside double-oblique segmentation sections.
Background
The traditional shipboard double-beveling subsection carrying and positioning mode generally adopts a vertical mounting type positioning method, namely a subsection is hoisted to be positioned in accordance with the direction of a ship body, constructors carry out positioning of a subsection data state according to related datum points (ground sampling points) and the levelness of an upper port of the subsection, the subsection is hoisted subsequently, secondary carrying is carried out with the subsection, the actual data state of the subsection is measured and judged according to a datum line, data is consistent with drawing data, the traditional carrying mode is long in time, the positioning and sealing difficulty is large, the potential safety hazard is large, rapid carrying cannot be completed, the utilization rate of a crane is greatly influenced, and the construction difficulty is large.
With continuous innovation of ship building methods and modes, an original hoisting construction mode cannot meet the requirement for improving production efficiency and also cannot meet the requirement for safety production, a large VLCC ship side double-beveling subsection is taken as an example, the condition that the subsection needs to be reset can occur due to poor precision quality control in the overall assembly stage of a site, the phenomenon that the subsection topples and data deviation is overlarge can easily occur due to poor subsection sealing, the load of a large crane is increased, the production benefit cannot be guaranteed, and the ship building period is overlong. And a series of measures such as expanding and enhancing the precision control of the double-bevel segmentation section, enhancing the process method of the total assembly and sealing of the double-bevel segmentation section and the like are adopted later, so that the precision quality and the safety factor of the total assembly process of the double-bevel segmentation section are improved, the construction progress is further delayed, the time is long, and the hidden danger of data deviation or segment overturning is still easy to occur after sealing because the double-bevel segmentation section has a large linear type and the segment weight is outboard.
Disclosure of Invention
In order to solve the problems, the invention provides a control method of horizontal total assembly and carrying precision of double-beveling subsection on a ship side, aiming at achieving the purposes of reducing lifting times, improving the assembly efficiency and successfully assembling once, and the adopted technical scheme is as follows:
a control method for horizontal total assembly carrying precision of double-oblique-cutting sections on a ship side of a ship body is characterized in that a reference section and a carried section are combined in a carrying field, the reference section is placed in the carrying field, and the reference section and the carried section are combined to form a total section.
S1: two points are arbitrarily selected as ground sampling points on a carrying site, the total station is erected at the position where the two ground sampling points and all precision control points of the reference section can be seen simultaneously, and the reflection light targets are placed at the ground sampling points and the precision control points.
S2: and respectively carrying out station building measurement on the two ground sample points by using a total station, building a three-dimensional coordinate system, recording the station building measurement sequence of the ground sample points, measuring each precision control point of the reference segment after the three-dimensional coordinate system is built, measuring to obtain actual space three-dimensional coordinate data of each precision control point, and recording.
S3: inputting theoretical space three-dimensional coordinate data of each precision control point of the reference subsection into a total station, selecting three precision control points by using a three-point moving function of the total station, moving the theoretical space three-dimensional coordinate data of the selected three precision control points to the corresponding precision control point positions in S2, carrying out data conversion and checking data deviation values of the precision control points, adjusting the position of the reference subsection in the length direction, the width direction or the height direction when the data deviation values exceed a deviation range until the data deviation values of the precision control points meet requirements, and storing the data.
S4: and inputting the theoretical space three-dimensional coordinate data of each precision control point of the total section into the total station, reversely combining the theoretical space three-dimensional coordinate data of the total section with the data in the S3, carrying out data fitting simulation carrying, and simultaneously carrying out three-point data movement to obtain the actual space three-dimensional coordinate data of the precision control points of the total section.
S5: and according to the sequence of station building and measurement of the ground sample points in the S2, the total station is utilized to respectively build the stations of the two ground sample points, and the carried segments are combined with the reference segments according to the actual space three-dimensional coordinate data of the total segment precision control points obtained in the S4.
The invention utilizes the total station to build a station, forms a three-dimensional coordinate system, measures and obtains the actual coordinate position of the reference segment and the theoretical coordinate position of the total segment, and reversely infers to obtain the actual coordinate position of the total segment, and the measured actual coordinate position of the total segment is the actual coordinate position of the carried segment, so that the carried segment is placed and combined according to the obtained actual coordinate position, the times of repeatedly testing whether the carried segment is in proper butt joint with the reference segment are reduced, and the lifting times of the carried segment are further reduced.
In the method for controlling the horizontal total assembly and carrying precision of the ship broadside double-oblique segmentation section, theoretical space three-dimensional coordinate data of a bow precision control point, a stern precision control point and a lower port precision control point of a reference segmentation are further selected in S3, the theoretical space three-dimensional coordinate data of the three points are moved to the actually measured bow precision control point, stern precision control point and lower port precision control point position in S2, data conversion is carried out, and data deviation values of the precision control points are checked.
According to the control method for the horizontal total assembly carrying precision of the ship broadside double-inclined segmentation section, after the reference segmentation section and the carried segmentation section are combined, each precision control point of the reference segmentation section and each precision control point of the carried segmentation section are each precision control point of the total section.
According to the control method for the horizontal type overall assembly carrying precision of the ship side double-oblique segmentation section, furthermore, the reference section is firstly hoisted to a carrying site by using a crane.
According to the control method for the horizontal total assembly carrying precision of the ship side diclinic segmentation section, the number of precision control points of the reference segmentation and the carried segmentation is 12, and the number of precision control points of the total segmentation is 6.
According to the control method for the horizontal type total assembly carrying precision of the ship side diclinic segmentation section, furthermore, the precision control point is a structure intersection point.
By adopting the section assembling method, the hoisting time is obviously shortened, and the utilization rate of the gantry crane is improved. The subsection carrying device can carry subsections in place at one time, reduce the working difficulty of constructors, reduce the danger coefficient and reduce the overhead operation. The double-beveling subsection is horizontally assembled, the sealing difficulty is reduced, the rapid carrying is realized, the potential safety hazard is eliminated, and the production efficiency is obviously improved. And the data does not need to be subjected to computer software operation analysis, so that a large amount of time is saved, and the data analysis and carrying can be completed on a working site. The method eliminates excessive dependence on computer software, improves production efficiency, and improves the three-dimensional space conversion capability of constructors, thereby being suitable for various complex precision control works.
The shipboard double-inclined segmentation horizontal assembling method has the advantages that the shipboard double-inclined segmentation is horizontally assembled, the hoisting time is reduced, the possibility of segmented hoisting reset is eliminated, the precision quality in the segmented assembling process is improved, particularly, the safety coefficient is improved, the potential safety hazard is thoroughly eliminated, the shipbuilding period can be continuously compressed, the production and construction cost is reduced, and the production efficiency is effectively improved. And the invention is suitable for all types of subsection general assembly embarkation operation.
Drawings
Fig. 1 is a schematic diagram of a total station measuring a reference segment, where the black dots marked in the diagram are all precise control points;
FIG. 2 is a schematic diagram of a total segment formed by combining a reference segment and a carried segment, wherein black dots marked in the diagram are all precise control points;
wherein: 1-ground sample line, 2-precise control point, 3-total station, 4-reference segment and 5-carried segment.
Detailed Description
The invention is further explained with reference to the drawings.
A control method for horizontal overall assembly carrying accuracy of double-oblique-cutting sections on a ship side comprises the steps of combining a reference section and a carried section in a carrying site, hoisting the reference section to the carrying site by using a crane, and combining the reference section and the carried section to form an overall section. The specific combination steps are as follows:
s1: as shown in fig. 1, two points are arbitrarily selected as ground sampling points in the carrying site, and the total station is erected at a position where the two ground sampling points and all the precision control points of the reference segment can be seen at the same time. The structure intersection points on the reference segment and the carried segment are selected as the precision control points, the number of the precision control points of the reference segment and the carried segment can be arbitrarily selected, and 12 precision control points are selected in the embodiment. When the reference segment and the embarked segment are combined, part of the precision control points are covered, and at the moment, the number of the precision control points of the total segment is 6. And placing a reflecting light target at the sampling point and the precision control point.
S2: and respectively carrying out station building measurement on the two ground sample points by using a total station, establishing a three-dimensional coordinate system, recording the sequence of the station building measurement of the ground sample points, measuring each precision control point of the reference segment after establishing the three-dimensional coordinate system, and measuring to obtain actual space three-dimensional coordinate data of each precision control point and recording.
S3: inputting theoretical space three-dimensional coordinate data of each precision control point of the reference subsection into a total station, selecting three precision control points positioned at the front, rear and lower ends of the reference subsection by using a three-point moving function of the total station, moving the theoretical space three-dimensional coordinate data of the selected three precision control points to the corresponding positions of the precision control points in S2, carrying out data conversion and checking data deviation values of the precision control points, adjusting the position of the reference subsection in the length direction or the width direction or the height direction when the data deviation values exceed a deviation range until the data deviation values of the precision control points meet requirements, and storing the data.
S4: and inputting the theoretical space three-dimensional coordinate data of each precision control point of the total section into the total station, reversely combining the theoretical space three-dimensional coordinate data of the total section with the data in the S3, carrying out data fitting simulation carrying, and simultaneously carrying out three-point data movement to obtain the actual space three-dimensional coordinate data of the precision control points of the total section. At this time, the precision control point of the port surface of the main section can obtain new three-dimensional data, the data is measured by taking a ground sample line as a reference, and is also actual three-dimensional data after the main section is combined, and the actual three-dimensional data of the carried sections can be known by utilizing the actual three-dimensional data and combining the three-dimensional data of the reference sections obtained by actual measurement, so that the carried sections can be combined according to the actual three-dimensional data, and the aim and the effect that the base section and the carried sections can be combined to form the main section at one time are achieved.
S5: and according to the sequence of station building and measurement of the ground sample points in the step S2, respectively building stations for the two ground sample points by using a total station, and combining the carried segments with the reference segments according to the actual space three-dimensional coordinate data of the total segment precision control points obtained in the step S4, as shown in the figure 2.
The invention utilizes the total station to build a station, forms a three-dimensional coordinate system, measures and obtains the actual coordinate position of the reference subsection and the theoretical coordinate position of the total section, and reversely infers and obtains the actual coordinate position of the total section, and the measured actual coordinate position of the total section is the actual coordinate position of the carried subsection, therefore, the carried subsection is placed and combined according to the obtained actual coordinate position, the times of repeatedly testing whether the carried subsection is in proper butt joint with the reference subsection are reduced, and the lifting times of the carried subsection are further reduced.
Claims (6)
1. A control method for horizontal type assembly carrying precision of double-beveling subsection on a ship side is characterized by comprising the following steps: the reference section and the carried section are combined in the carrying site, the reference section is placed in the carrying site, the reference section and the carried section are combined to form a total section, before combination,
s1: two points are required to be selected at will in a carrying site as ground sampling points, the total station is erected at a position where the two ground sampling points and all precision control points of the reference section can be seen at the same time, and reflective light targets are placed at the ground sampling points and the precision control points;
s2: respectively carrying out station building measurement on two ground sample points by using a total station, establishing a three-dimensional coordinate system, recording the station building measurement sequence of the ground sample points, measuring each precision control point of the reference segment after establishing the three-dimensional coordinate system, and measuring to obtain actual space three-dimensional coordinate data of each precision control point and recording;
s3: inputting theoretical space three-dimensional coordinate data of each precision control point of the reference subsection into a total station, selecting three precision control points by using a three-point moving function of the total station, moving the theoretical space three-dimensional coordinate data of the selected three precision control points to the corresponding precision control point positions in S2, performing data conversion, checking data deviation values of the precision control points, adjusting the position of the reference subsection in the length direction, the width direction or the height direction when the data deviation values exceed a deviation range until the data deviation values of the precision control points meet requirements, and storing the data;
s4: inputting theoretical space three-dimensional coordinate data of each precision control point of the total section into a total station, reversely combining the theoretical space three-dimensional coordinate data of the total section with the data in the S3, carrying out data fitting simulation carrying, and simultaneously carrying out three-point data movement to obtain actual space three-dimensional coordinate data of the precision control points of the total section;
s5: and according to the sequence of station building and measurement of the ground sample points in the S2, the total station is utilized to respectively build the stations of the two ground sample points, and the carried segments are combined with the reference segments according to the actual space three-dimensional coordinate data of the total segment precision control points obtained in the S4.
2. The control method for the horizontal type total assembling and carrying precision of the ship broadside double-bevel segmentation section according to claim 1 is characterized in that:
and S3, theoretical space three-dimensional coordinate data of a bow precision control point, a stern precision control point and a lower port precision control point of the reference segment are selected, the theoretical space three-dimensional coordinate data of the three points are moved to the positions of the bow precision control point, the stern precision control point and the lower port precision control point which are actually measured in S2, data conversion is carried out, and data deviation values of the precision control points are checked.
3. The control method for the horizontal type total assembling and carrying precision of the ship broadside double-bevel segmentation section according to claim 1 is characterized in that: after the reference segment and the mounted segment are combined, each precision control point of the reference segment and each precision control point of the mounted segment are each precision control point of the total segment.
4. The control method for the horizontal type total assembling and carrying precision of the ship broadside double-bevel segmentation section according to claim 1 is characterized in that: the reference subsection is firstly hoisted to a carrying site by a crane.
5. The control method for the horizontal total assembly carrying precision of the ship hull broadside double-bevel segmentation section according to claim 1, is characterized in that: the number of the precision control points of the reference segment and the loaded segment is 12, and the number of the precision control points of the total segment is 6.
6. The method for controlling the horizontal total assembly carrying precision of the ship broadside double-bevel segmentation section according to the claim 1, 2, 3 or 5, is characterized in that: the precision control points are structure intersections.
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| CN202210792519.2A CN115140266B (en) | 2022-07-07 | 2022-07-07 | Control method for carrying precision of ship side double-bevel sectional horizontal type main assembly |
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| CN202210792519.2A CN115140266B (en) | 2022-07-07 | 2022-07-07 | Control method for carrying precision of ship side double-bevel sectional horizontal type main assembly |
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