Precision control method for installation of container ship hatch cover accessory block stage

Abstract

A precision management and control method of container ship hatch cover accessory block stage installation comprises the steps that simulation data adjustment is conducted on whole cabin data in advance, front-back position accurate data of a transverse bulkhead block can be obtained in advance, and accurate position positioning of a hatch cover accessory is conducted through the data; the deformation of the transverse bulkhead, especially the deformation of a non-structural transverse bulkhead, in the hoisting process is reduced by reserving reversible deformation reserved in the total assembly stage of the transverse bulkhead block, so that the forward mounting of the accessory meets the design tolerance requirement; compared with the prior art, the construction method has the advantages that the construction period of a dock is shortened, meanwhile, the danger of construction of the hatch cover accessories in the dock stage is reduced, manpower and material resources in the block stage are fully utilized, the overall construction precision is improved, the construction difficulty is reduced, and it is guaranteed that follow-up hatch covers are successfully folded and hoisted at a time.

Description

Technical Field

[0001] The invention belongs to the field of marine ship design and construction, and in particular relates to a method for controlling the accuracy of the installation of a container ship hatch cover accessory assembly section. Background Art

[0002] After the entire container ship is formed and the lashing bridge on the upper part of the transverse bulkhead is closed and welded, the hatch cover needs to be hoisted and closed and the accessories need to be installed. In the past, during the installation of container hatch cover accessories, a full safety net hanging board was set up around the hatch of the entire cabin, and the hatch cover needed to be hoisted twice. During the first hoisting, it was necessary to set up support height pads around the hatch cover and make the upper end surface of the hatch cover horizontal. Then, the installation construction personnel needed to measure the specific position of the accessories in the extremely small space between the hatch cover and the lashing bridge, draw the position line and measure the height data, and finally place the accessories in the appropriate position; the hatch cover was hoisted twice and lifted away from the accessory installation area. The construction personnel needed to perform the welding of the accessories at the lower end of the lashing bridge and the hanging board in the cabin and the subsequent grinding and digestion construction; the hatch cover was hoisted again on board and closed. At present, during the construction of container ships, we advocate safe production and efficiency and quality improvement, and at the same time, we also want to reduce the difficulty of construction and improve the accuracy of construction. In order to achieve this overall goal, we need to make use of existing resources and technical systems to make corresponding optimizations in construction methods, which can completely achieve the improvement of various data. At the same time, in order to reduce the difficulty of construction and improve the accuracy of construction, in order to achieve this overall goal, we need to make use of existing resources and technical systems to make corresponding optimizations in construction methods, which can completely achieve the improvement of various data. Therefore, this precision control method is designed. By using this method to perform the installation precision construction of hatch cover accessories, the construction efficiency and installation accuracy can be greatly improved, and the parts on the transverse bulkhead that affect the installation of hatch cover accessories can be discovered in time, and data can be adjusted and repaired in time, so that the installation process of hatch cover accessories can be moved forward to the general section stage. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a method for controlling the accuracy of the installation of the container ship hatch cover accessory segment, and the technical solution adopted is: A method for controlling the accuracy of the installation of the overall section of a container ship hatch cover accessory, the specific operation process is: S1: When assembling the transverse bulkhead section, set 5-10mm anti-deformation relief on both sides of the transverse bulkhead section to prevent the transverse bulkhead section from buckling during hoisting, and perform forming welding on the transverse bulkhead section.

[0004] S2: After the transverse bulkhead section is welded, the section is subjected to three-dimensional precision measurement. The measurement points are the structural points of the hatch cover accessories set in the hatch coaming area of ​​the transverse bulkhead section. The three-dimensional coordinate data of each structural point is measured, and the measured three-dimensional coordinate data are analyzed and adjusted by software to be within 3mm of the theoretical data.

[0005] S3: Based on the adjusted three-dimensional coordinate data, multiple reference position lines are drawn on the transverse bulkhead section, including the hull centerline and the transverse bulkhead fore and aft position lines; the inside and outside position lines of the hatch cover accessories are drawn with the hull centerline as the reference, and the fore and aft position lines of the hatch cover accessories are drawn with the transverse bulkhead fore and aft position lines as the reference. The inside and outside position lines of the hatch cover accessories intersect with the fore and aft position lines of the hatch cover accessories to form an intersection.

[0006] S5: Use the laser total station to perform three-dimensional precision measurement of the transverse bulkhead section again, measure the intersection points formed by the inside and outside position lines and the fore and aft position lines of all hatch cover accessories, and all structural points of all transverse bulkhead sections. After the measurement, use the simulation loading software to simulate the loading of adjacent transverse bulkhead sections, determine the data status of subsequent adjacent transverse bulkhead sections, and correct the reference position lines of adjacent transverse bulkhead sections, the fore and aft position lines of hatch cover accessories, and the inside and outside position lines of hatch cover accessories.

[0007] S6: Pre-simulate the loading of the transverse bulkhead section. In the simulated loading, the data of the hatch cover accessories of the transverse bulkhead section in the front and rear directions are moved in the computer. Based on the lower end of the transverse bulkhead section, the position of the hatch coaming is adjusted forward or backward to guide the data status of the actual closing and positioning.

[0008] S7: Record the horizontal data of the hatch cover attachment position obtained from the simulated loading, and correct the hatch cover attachment position line of the adjacent transverse bulkhead section according to the optimal data state of the simulated loading.

[0009] S8: Install the hatch cover accessories of the transverse bulkhead section according to the marked hatch cover accessory position lines and weld them.

[0010] S9: After the hatch cover accessories are nailed and welded, the data is reconfirmed and the data that does not meet the design requirements is corrected.

[0011] During the closing and positioning of the transverse bulkhead section, the oil block reference line marked in the dock is used as the reference for data measurement during the closing and positioning. The front and rear reference network lines and the hull centerline that have been marked on the large bottom section are measured to ensure that they correspond to the oil block reference line in the dock.

[0012] Measure the fore and aft reference points on both sides of the transverse bulkhead section and the hull centerline to make the fore and aft directions of the transverse bulkhead section and the hull centerline consistent with the simulated loading data.

[0013] Similarly, the adjacent transverse bulkhead sections in the fore and aft directions are closed and positioned.

[0014] S10: According to the data provided by the simulated loading and the actual positioning status, check the reference network line and the hatch cover accessory position line in turn, check the matching situation with the simulated loading data according to the instrument display data, and seal the transverse bulkhead section with the connecting bridge in combination with the hatch cover accessory installation tolerance standard, and make a 5-8mm anti-deformation in the front and rear direction in advance to ensure that the data changes generated after the whole cabin forming welding are within the tolerance range, and ensure that the installation position of the hatch cover accessories matches the structure of the lower end plate of the hatch cover.

[0015] The above-mentioned method for precision control of the installation of the overall section of the hatch cover accessories of a container ship, further, the hatch cover accessory is a support box located at the lower end of the hatch cover.

[0016] The above-mentioned method for precision control of the installation of the overall section of the hatch cover accessories of a container ship, further, in step S2, the three-dimensional coordinate data of each structural point is measured, and after the measurement, the three-dimensional coordinate data is analyzed using three-dimensional data analysis software, and the three-dimensional coordinate data is adjusted to adjust the three-dimensional coordinate data of each measuring point to within the design theoretical 3mm range.

[0017] The above-mentioned method for precision control of the installation of the overall section of the hatch cover accessories of a container ship, further, in step S5, the simulation installation software is Eco-OTS.

[0018] The above-mentioned method for precision control of the stage installation of the container ship hatch cover accessory assembly section, further, the transverse bulkhead assembly section is divided into a structural transverse bulkhead and a non-structural transverse bulkhead.

[0019] In the above-mentioned method for precision control of staged installation of container ship hatch cover accessory segments, further, the transverse bulkhead segments are divided into structural transverse bulkhead segments and non-structural transverse bulkhead segments. In step S6, the structural transverse bulkhead segments are mainly adjusted in the overall front-rear direction.

[0020] The above-mentioned method for controlling the accuracy of the installation of the overall section of the hatch cover accessories of a container ship, further, the three-dimensional data analysis software is ECO-block.

[0021] The advantages of the present invention are that, the principle of pre-simulation loading data of the whole cabin is utilized, and the simulation data of the whole cabin data is adjusted in advance, so that the accurate data of the front and rear positions of the transverse bulkhead section can be obtained in advance, and the data can be used to accurately locate the positions of the hatch cover accessories; by reserving the reverse deformation reserved in the transverse bulkhead section assembly stage, the deformation of the transverse bulkhead, especially the non-structural transverse bulkhead, during lifting is reduced, so that the forward installation of the accessories meets the design tolerance requirements; the dock construction period is shortened, and at the same time, the danger of the hatch cover accessory construction in the dock stage is reduced, the manpower and material resources in the section stage are fully utilized, the overall construction accuracy is improved, and the difficulty of construction is reduced, so as to ensure the one-time success of the subsequent hatch cover closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a construction flow chart of the present invention.

[0023] Figure 2 It is a schematic diagram of construction measurement of the present invention.

[0024] Figure 3 It is a schematic diagram of drawing and measuring the construction accessories of the present invention.

[0025] Figure 4 It is a schematic diagram of deformation and placement of the overall section of the transverse bulkhead of the present invention.

[0026] Figure 5 This is a control diagram of the closing positioning accuracy of the transverse bulkhead total section of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in conjunction with the accompanying drawings.

[0028] A method for controlling the precision of the installation of the container ship hatch cover accessories in the overall section, such as Figure 1 As shown in the figure, in the actual application of a container ship, during the assembly process of the transverse bulkhead section assembly, 10-15mm anti-deformation relief is set on the left and right sides of the section to prevent the transverse bulkhead section from being hoisted and deformed in the middle, so as to prevent the data of the front and rear directions from being out of tolerance during the loading process of the section in the dock, affecting the positioning accuracy of the subsequent hatch cover and causing misalignment on the hatch cover accessories.

[0029] like Figure 2 As shown in the figure, after the transverse bulkhead section is welded, the laser total station is used to perform three-dimensional precision measurement of the section, wherein the measurement points are the structural points of the hatch cover lower end attachment (hatch cover lower end support box) set in the hatch coaming area of ​​the transverse bulkhead section, and the three-dimensional coordinate data of each structural point are measured.

[0030] After the measurement, the three-dimensional data analysis software (ECO-block) is used to analyze the measured data and adjust the data to adjust the data of each measuring point to within the design theoretical range of 3mm; based on the adjusted data, the total station is used to mark the reference network lines on the total section, and the reference network lines include: the front and rear position reference lines of the total section and the center line of the hull; the laser total station is used to mark the front and rear position lines of the hatch cover accessories based on the front and rear position lines on both sides of the transverse bulkhead, and the inside and outside position lines of the hatch cover accessories are marked based on the center line of the hull, and the two lines form an intersection and are recorded.

[0031] like Figure 3 As shown in the figure, the position lines of adjacent transverse bulkhead sections in the fore-aft direction are marked according to the above method; the three-dimensional precision measurement of the transverse bulkhead section is carried out again by using the laser total station, and the intersection points of the position lines of all accessories and the various structural position points of the transverse bulkhead section are measured; the simulation loading software (Eco-OTS) is used to simulate the loading of adjacent transverse bulkhead sections in the fore-aft direction of the entire cabin area, and the fore-aft position adjustment of the adjacent transverse bulkhead sections is carried out according to the actual data of the simulated loading.

[0032] like Figure 4 As shown in the figure, according to the different structural forms of the transverse bulkhead segments, they are divided into structural transverse bulkheads and non-structural transverse bulkheads, and both types of transverse bulkhead segments will produce camber deformation during the hoisting process. After the preset anti-deformation in the assembly stage, the deformation will become smaller. The camber deformation of the structural transverse bulkhead segment will still be around 8-10mm. In view of this phenomenon, the data in the fore-and-aft direction are moved in the computer in advance in the simulated loading, and the hatch coaming position is adjusted forward or backward based on the lower end of the transverse bulkhead segment as the reference, to guide the data state of the actual closing positioning, mainly the adjustment of the structural transverse bulkhead segment in the fore-and-aft direction as a whole; the position line of the hatch cover attachment of the adjacent transverse bulkhead segment is corrected according to the optimal data state of the simulated loading.

[0033] According to the hatch cover accessory position line that has been marked, install and weld the hatch cover accessories (the hatch cover lower end support box). Figure 5As shown, in the closing and positioning of the transverse bulkhead section, the oil block reference line marked in the dock is used as the reference for data measurement in the closing and positioning, and the front and rear reference network lines and the hull center line of the large bottom section that have been marked are measured to ensure that they correspond to the oil block reference line in the dock. The front and rear reference points and the hull center line on both sides of the transverse bulkhead section are measured to ensure that the front and rear reference lines of the section and the hull center reference lines are consistent with the simulated loading data. Similarly, the closing and positioning of the adjacent transverse bulkhead sections in the front and rear directions are carried out. According to the data provided by the simulated loading and the actual positioning status, the reference network lines and the hatch cover accessory position lines shown in the figure are detected in turn, and the matching with the simulated loading data is checked according to the instrument display data. Combined with the installation tolerance standard of the hatch cover accessories (hatch cover lower end support box), the transverse bulkhead section is sealed with a connecting bridge, and a 5-8mm anti-deformation is added in advance in the front and rear direction to ensure that the data changes generated after the whole cabin forming welding are within the tolerance range and that the installation position of the hatch cover accessories matches the hatch cover lower end surface pad structure.

[0034] The use of the method of the present invention to accurately install the accessories of the hatch cover can greatly improve the construction efficiency and installation accuracy, and can timely discover the parts on the transverse bulkhead that affect the installation of the hatch cover accessories, and timely adjust and repair the data, so as to realize the forward movement of the installation process of the hatch cover accessories to the general section stage. This method is based on the precision control of the transverse bulkhead general section after the general assembly of the transverse bulkhead of the container ship is formed, the reference network line is drawn in advance, and pre-simulation loading measures are taken. This precision control method solves the problem that the hatch cover accessories must be installed after the hatch cover is hoisted onto the ship as a whole, and the problem of repeated hoisting more than twice is required. At the same time, it solves the problem of welding the accessories at the lower end of the hatch cover after the hatch cover is closed and formed without setting up hanging plates around the entire cabin.

Claims

1. A method for controlling the accuracy of the installation of the container ship hatch cover accessory section, characterized in that: The specific operation process is: S1: When assembling the transverse bulkhead section, set 5-10mm anti-deformation relief on both sides of the transverse bulkhead section to prevent the transverse bulkhead section from buckling during hoisting, and perform forming welding on the transverse bulkhead section; S2: After the transverse bulkhead section is welded, the section is subjected to three-dimensional precision measurement. The measurement points are the structural points of the hatch cover accessories set in the hatch coaming area of ​​the transverse bulkhead section. The three-dimensional coordinate data of each structural point is measured. The measured three-dimensional coordinate data is analyzed and adjusted by software to be within 3mm of the theoretical data. S3: Based on the adjusted three-dimensional coordinate data, multiple reference position lines are drawn on the transverse bulkhead section, the reference position lines including the hull centerline and the fore and aft position lines of the transverse bulkhead; Taking the hull centerline as the reference, the inside and outside position lines of the hatch cover accessories can be drawn. Taking the front and rear position lines of the transverse bulkhead as the reference, the front and rear position lines of the hatch cover accessories can be drawn. The inside and outside position lines of the hatch cover accessories intersect with the front and rear position lines of the hatch cover accessories to form an intersection point. S5: Use the laser total station to perform three-dimensional precision measurement on the transverse bulkhead section again, measure the intersection points formed by the inside and outside position lines and the front and rear position lines of all hatch cover accessories, and all structural points of all transverse bulkhead sections. After the measurement, use the simulation loading software to simulate the loading of adjacent transverse bulkhead sections, determine the data status of subsequent adjacent transverse bulkhead sections, and correct the reference position lines of adjacent transverse bulkhead sections, the front and rear position lines of hatch cover accessories, and the inside and outside position lines of hatch cover accessories; S6: Preliminary simulation loading of the transverse bulkhead section is performed. In the simulation loading, the three-dimensional coordinate data of the front and rear position lines of the hatch cover attachments of the transverse bulkhead section are moved in the computer. With the lower end of the transverse bulkhead section as the reference, the position of the hatch coaming is adjusted forward or backward to guide the data status of the actual closing positioning; S7: Record the horizontal data of the position of the hatch cover accessories obtained by the simulated loading, and correct the position lines of the hatch cover accessories of the adjacent transverse bulkhead section in the front-rear direction and the inside-outside direction according to the optimal data state of the simulated loading; S8: Install the hatch cover accessories of the transverse bulkhead section according to the marked hatch cover accessories’ fore and aft directions and inside and outside directions, and weld them; S9: After the hatch cover accessories are nailed and welded, the data is reconfirmed and the data that does not meet the design requirements is corrected; During the closing and positioning of the transverse bulkhead section, the oil block reference line marked in the dock is used as the reference for data measurement during closing and positioning. The front and rear reference network lines and the hull centerline marked on the large bottom section are measured to ensure that they correspond to the oil block reference line in the dock. Measure the fore and aft reference points on both sides of the transverse bulkhead section and the hull centerline to make them consistent with the simulated loading data; Similarly, close and position the adjacent transverse bulkhead sections in the fore and aft directions; S10: According to the data provided by the simulated loading and the actual positioning status, check the reference network line and the hatch cover accessory position line in turn, check the matching situation with the simulated loading data according to the instrument display data, and seal the transverse bulkhead section with the connecting bridge in combination with the hatch cover accessory installation tolerance standard, and make a 5-8mm anti-deformation in the front and rear direction in advance to ensure that the data changes generated after the whole cabin forming welding are within the tolerance range, and ensure that the installation position of the hatch cover accessories matches the structure of the lower end plate of the hatch cover.

2. A method for controlling the accuracy of the installation of a container ship hatch cover accessory section according to claim 1, characterized in that: The hatch cover attachment is a support box located at the lower end of the hatch cover.

3. A method for controlling the accuracy of the installation of a container ship hatch cover accessory section according to claim 1, characterized in that: In step S2, the three-dimensional coordinate data of each structural point is measured, and after the measurement, the three-dimensional coordinate data is analyzed using three-dimensional data analysis software to adjust the three-dimensional coordinate data to adjust the three-dimensional coordinate data of each measurement point to within the design theoretical 3mm range.

4. A method for controlling the accuracy of the installation of a container ship hatch cover accessory section according to claim 1, characterized in that: In step S5, the simulated mounted software is Eco-OTS.

5. The method for controlling the accuracy of the installation of the container ship hatch cover accessory section according to claim 1, characterized in that: The transverse bulkhead section is divided into structural transverse bulkhead and non-structural transverse bulkhead.

6. A method for controlling the accuracy of the installation of a container ship hatch cover accessory section according to claim 1, characterized in that: The transverse bulkhead section is divided into a structural transverse bulkhead section and a non-structural transverse bulkhead section. In step S6, the structural transverse bulkhead section is mainly adjusted in the front-rear direction as a whole.

7. A method for controlling the accuracy of the installation of a container ship hatch cover accessory segment according to claim 1 or 3, characterized in that: The 3D data analysis software is ECO-block.

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