CN109606542B - Method for controlling positioning and mounting precision of special equipment base on block - Google Patents
Method for controlling positioning and mounting precision of special equipment base on block Download PDFInfo
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- CN109606542B CN109606542B CN201811259829.8A CN201811259829A CN109606542B CN 109606542 B CN109606542 B CN 109606542B CN 201811259829 A CN201811259829 A CN 201811259829A CN 109606542 B CN109606542 B CN 109606542B
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- 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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Abstract
The invention discloses a method for controlling the positioning and mounting precision of a special equipment base on a block, which mainly adopts a reverse deformation technology to control the mounting precision of the special equipment base and mainly comprises reverse deformation control of the special equipment base mounted on a ship block, reverse deformation control carried on the ship block and reverse deformation control of equipment base panel processing. The invention ensures the installation precision by controlling the staged reverse deformation in the building process, can offset the influence of the hull deformation generated in the carrying process of the total section, the hull deformation generated in the processing process of the equipment base plane and the hull deformation on the base installation precision in the whole building process of the ship, ensures the controlled deformation of the hull structure, improves the precision control level of the base positioning installation, and the actual application of the process technology can be implemented as long as the process technology has the conventional ship building capability.
Description
Technical Field
The patent is a divisional application of patent application 201810623015.1 invented on 6-month-15-th day in 2018.
The invention relates to the technical field of ship construction, in particular to a method for controlling the positioning and mounting accuracy of a special equipment base on a block.
Background
In recent years, with the development of modern shipbuilding technology, in order to adapt to the development requirement of a modern shipbuilding mode, the research on the integrated construction process of the ship block is promoted, on the basis of the research and practice of the block construction technology and the regional outfitting technology, an advanced lean production theory is taken as guidance, the technical research on the positioning and installation process of the special equipment base block is developed, the key technology of the positioning and installation of the special equipment base block is broken through, a guide file for the positioning and installation of the special equipment base block is formed, the requirement of the integrated construction of the ship block is met, the pre-outfitting rate of the block is improved, the building period of a shipway is shortened, and the ship construction efficiency is improved.
The positioning and installation of the special equipment base in the block is to advance the construction joint of positioning and installation after the main hull is finished in the traditional construction process, correspondingly change the relevant requirements of the construction conditions, the process and the like of the positioning and installation of the base, and put forward higher requirements on the positioning and installation of the base and the precision control of the hull construction. On one hand, the construction process and the precision control of the block construction can meet the positioning and mounting precision control requirement of the special equipment base; on the other hand, the positioning and mounting precision of the special equipment base is required to be realized in the precision control process of the total section construction.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and designs a method for controlling the positioning and mounting precision of a special equipment base on a block.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a method for controlling the positioning and mounting accuracy of a special equipment base on a block specifically comprises the following steps:
step 1: setting the horizontal deformation d of the base plane when the special equipment base is installed, the horizontal deformation e of the equipment base plane when the block is carried, and the horizontal deformation c of the equipment base panel when the hull launching is at the normal displacement;
step 2: mounting a special equipment base on the ship body block;
specifically, firstly, determining an installation reference of a special equipment base; then, hoisting the special equipment base to a target position according to an installation reference, adjusting the equipment base to enable the horizontal bow direction of the base plane to be adjusted to a set horizontal deformation d and the horizontal levelness to be adjusted to 0 degree, and marking a cutting allowance line and a cutting allowance on the base plane; finally, symmetrically welding and fixing the special equipment base;
and step 3: carrying the hull block on a slipway;
specifically, the hull block is hoisted to a slipway, and the horizontal state of the hull block is adjusted to ensure that the longitudinal levelness of the equipment base is in the range of [ e-1 ', e + 1' ]; then, performing girth welding and fixing on the hull block;
and 4, step 4: calibrating the center line of the ship body; marking 0-degree, 90-degree, 180-degree and 270-degree scale lines on a device base panel, processing a base plane by using a ring surface milling machine by taking a hull central line as a longitudinal adjustment reference by means of a quadrant instrument, and adjusting the longitudinal levelness of the base plane to be c and the transverse levelness to be 0 degree; and after the processing is finished, detecting the longitudinal horizontal value and the transverse horizontal value of the base plane.
Preferably, after cutting allowance is cut on the base plane of the special equipment base in the step 2, the cutting surface is polished to remove cutting burrs, the installation position of the equipment base and the transverse levelness and the longitudinal levelness of the base plane are retested, the deviation of the installation precision is controlled to be not more than 1mm, and the deviation of the transverse levelness and the longitudinal levelness is controlled to be not more than 1'; and after the retest is finished, welding and fixing the special equipment base.
Preferably, the specific step of determining the installation reference of the special equipment base in the step 2 is as follows:
erecting a laser theodolite to a target position, leveling the laser theodolite by taking the ground level as a reference, marking a total section central line on a deck of a ship block by using the laser theodolite in combination with a ship block structure line and an actual positioning central line carried by a shipway on the total section, and marking the total section central line as a longitudinal reference line for mounting an equipment base by using ocean stamp; taking the ground level as a horizontal reference surface for mounting the equipment base; and taking a rib position line marked out when the total assembly of the total section is carried out as a transverse datum line for mounting the equipment base.
Preferably, the specific steps of hoisting the special equipment base to the target position according to the installation reference in the step 2 are as follows:
firstly, hoisting an equipment base to a target position of a ship body total section, so that a longitudinal scribed line of a cross line scribed in advance on an installation part of the equipment base coincides with the central line of the total section, and a transverse scribed line is aligned with a corresponding rib position line;
then, whether the equipment base is hoisted in place is detected by using the laser theodolite, if the equipment base meets the specified requirements, the height between the upper plane of the base and the deck of the ship block and the levelness of the upper plane of the base are adjusted, and the horizontal bow direction of the plane of the base is adjusted to the set horizontal deformation d and the horizontal levelness is adjusted to be 0 degree.
Preferably, the horizontal deformation d = a + c of the special equipment base, wherein a is the horizontal deformation of the total section to the plane of the equipment base after the main hull structure is complete, b is the longitudinal horizontal deformation of the plane of the equipment base when the total section is carried, and c is the horizontal deformation of the panel of the equipment base after the plane of the equipment base is processed until the hull is at the normal displacement.
Preferably, after the hull block is welded and fixed in the step 3, whether the longitudinal levelness of the equipment base on the hull block is in the range of [ d-1 ', d + 1' ] is measured, and if the requirement is met, the step 4 is executed.
Preferably, the horizontal deformation e = a + b + c of the equipment base plane when the total section is mounted, where a is the horizontal deformation of the equipment base plane after the total section is assembled to the main hull structure is complete, b is the longitudinal horizontal deformation of the equipment base plane when the total section is mounted, and c is the horizontal deformation of the equipment base panel when the hull launching is at the normal displacement after the plane processing of the equipment base.
The invention has the following positive beneficial effects:
1. the installation precision control method has high controllability, and the precision control of the shipboard installation of the special equipment base is decomposed into three stages for control through analysis and research, so that the control precision is convenient to adjust, and the positioning installation precision of the forward movement of the base installation stage is ensured. Compared with the prior art, the forward movement of the special equipment base positioning installation node is realized, the pre-outfitting rate of the block is effectively improved, the building period of the slipway is shortened, and the ship building efficiency is improved.
2. The method ensures the installation precision by controlling the staged reverse deformation in the building process, can offset the influence of the hull deformation generated in the carrying process of the total section, the hull deformation generated in the processing process of the equipment base plane and the hull deformation on the base installation precision in the whole building process of the ship, ensures the controlled deformation of the hull structure, improves the precision control level of the base positioning installation, and can be implemented as long as the process technology has the conventional ship building capability without special equipment and technology.
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 process flow diagram of the installation accuracy control of the present invention.
Fig. 2 is a positioning diagram of a special equipment base of a certain ship.
Fig. 3 is a schematic view of a special equipment base mounting surface of a certain type of ship.
The specific meanings of the reference numbers in the figures are: 1 is the 1-deck and 2 is the 01-deck.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The method for controlling the positioning and mounting accuracy of the special equipment base on the block mainly adopts the reverse deformation technology to control the mounting accuracy of the special equipment base, and mainly comprises reverse deformation control of the special equipment base mounted on the ship block, reverse deformation control of the ship block carrying and reverse deformation control of equipment base panel processing.
The special equipment base is installed on the reverse deformation control of the ship body total section and is mainly used for counteracting the influence of ship body deformation on the base installation precision in the ship building process. The ship body precision control in the whole ship building process is analyzed, the horizontal deformation of the special equipment base plane in the block positioning installation is summarized and determined by combining the installation characteristics and requirements of the special equipment base, the equipment base is adjusted according to the horizontal deformation value, so that the horizontal deformation deviation is avoided, the deviation accumulation in the whole installation and positioning process is reduced, and the precision control level of the equipment base positioning installation is improved.
The anti-deformation control of the ship body block carrying is mainly used for offsetting the influence of deformation generated in the ship body carrying process on the base mounting precision. According to a ship block carrying scheme, according to ship block carrying precision control requirements proposed in standards and specifications such as water surface ship block construction precision requirement, CBT4000-2005 China shipbuilding quality standard and the like, by comprehensively analyzing precision control and data acquisition of each link of block construction and combining the actual situation of block construction, the precision control requirements in the aspects of welding deformation, cutting precision, plate marking, anti-deformation value, datum line (surface) determination, lifting ring and structure strengthening setting, block carrying and the like are analyzed, position offset when the block is carried is determined through research and summary, and the horizontal state of the block is adjusted according to the offset, so that the influence of deformation generated in the carrying process on base mounting precision is counteracted, and the deformation control of a ship body structure is ensured to be controlled.
The anti-deformation control of the equipment base panel processing is mainly used for offsetting the influence of the hull deformation on the base mounting precision during base plane processing. According to the requirements on positioning and installation of the special equipment base in standards and specifications such as water surface ship hull construction precision requirement, CBT4000-2005 China shipbuilding quality standard and the like, the deviation requirement of precision control when the special equipment base is installed and tested after the main ship hull is complete in structure is determined by combining the shipping technical conditions of a ship equipment system, and the panel deformation amount during equipment base machining is researched and determined by combining the deformation condition of actual base panel machining.
The method for controlling the positioning and installation accuracy of the special equipment base on the block is specifically described below by taking a certain ship series ship as an example in combination with fig. 1. The method specifically comprises the following steps:
step 1: and setting the horizontal deformation d of the base plane when the special equipment base is installed, the horizontal deformation e of the equipment base plane when the main section is carried, and the horizontal deformation c of the equipment base panel when the ship body launching is in normal drainage.
The horizontal deformation d = a + c of the special equipment base, wherein a is the longitudinal horizontal deformation of the plane of the equipment base after the total assembly of the total section is complete in the structure of the main hull, b is the longitudinal horizontal deformation of the plane of the equipment base when the total section is carried, and c is the longitudinal horizontal deformation of the panel of the equipment base after the plane processing of the equipment base is finished until the launching of the hull is at the normal drainage.
The horizontal deformation amount e = a + b + c of the device base plane at the time of mounting the total segment.
The longitudinal horizontal degree deformation a of the equipment base plane after the total assembly of the block is complete to the main hull structure, the longitudinal horizontal degree deformation b of the equipment base plane when the block is carried, and the longitudinal horizontal degree deformation c of the equipment base panel when the hull is in normal drainage are measured, counted and analyzed through the baseline deflection of the hull and the horizontal auxiliary detection reference, the block construction process and the construction process are comprehensively considered, and the variation of the horizontal state after the total assembly of the block is complete to the main hull structure is determined through research and summary.
Step 2: and mounting the special equipment base on the ship hull block.
Firstly, an installation reference of the special equipment base is determined, wherein the installation reference comprises a main section center line, a horizontal reference plane and a transverse reference line.
The specific steps for determining the installation reference of the special equipment base are as follows:
calibrating the center line of the main section: erecting the laser theodolite to a target position, leveling the laser theodolite by taking the ground level as a reference, and displaying the composite bubble in any direction during leveling to ensure that the theodolite is at the ground level; marking a center line of the block on a deck 1 of the block of the ship body by using a laser theodolite in combination with a structural line of the ship body and an actual positioning center line carried by a slipway on the block, marking the center line of the block by ocean stamp, and taking the center line of the block as a longitudinal datum line for mounting an equipment base after marking the center line of the block and passing acceptance check;
the ground level is used as a horizontal reference surface for installing the equipment base, and proper adjustment is carried out according to the actual construction control precision of the block and the leveling inclination of the deck of the block in the actual installation process of the equipment base;
and taking the rib position line marked out when the block is assembled as a transverse datum line for mounting the equipment base, and properly adjusting according to the actually constructed hull structure of the block in the actual mounting process of the equipment base.
Then, determining the construction state of the positioning and mounting position of the base, finishing the total assembly of the total section, basically finishing the fire correction of the ship body near the position of the base, after the calibration of the positioning and mounting reference (central line and horizontal state) of the base is finished, hoisting the equipment base to the target position of the total section (FZ 01 total section) of the ship body, and enabling the longitudinal scribed line of the cross line scribed in advance on the mounting position of the equipment base to coincide with the central line of the total section and the transverse scribed line to be aligned with the corresponding rib position line; whether the equipment base is hoisted in place or not is detected by using a laser theodolite at a set detection point (namely whether a longitudinal scribed line of a cross line is coincident with a central line of a main section or not and whether a transverse scribed line is aligned with a rib position line at the installation position or not is detected), if the requirements are met, the height of a plane on the base from a deck of the main section of a ship body and the levelness of the plane on the base are adjusted, so that the horizontal bow direction of the plane of the base is adjusted to a set horizontal deformation d (namely the longitudinal levelness of the plane of the base is adjusted to d), and the transverse levelness is adjusted to 0 deg. And after the equipment base is adjusted in place, marking a cutting allowance line on the plane of the base, and cutting allowance. After allowance cutting, polishing the cutting surface to remove cutting burrs, then retesting the mounting position of the equipment base and the transverse levelness and the longitudinal levelness of the base plane, controlling the mounting precision deviation not to exceed 1mm, controlling the deviation of the transverse levelness and the longitudinal levelness not to exceed 1', and well performing temporary stopping and fixing; after retesting, use qualified welding machine, adopt the appropriate welding material, and adopt appropriate electric current, qualified electric welder on duty, according to the welding process requirement, carry out welded fastening to the special equipment base, should call even spot welding when the fixed point is welded, control welding deformation, retest relevant data once more after the spot welding, and make data record.
After welding, after thorough cooling, cutting off the temporary support in the base, cleaning burrs of grinding and cutting, and reporting to the quality department after self-checking.
And step 3: and carrying the ship body block on a slipway.
Specifically, a ship body block is hoisted to a slipway, when the ship body block is hoisted in place, the longitudinal horizontal value of a special equipment base which is positioned and installed on the block is measured, and a three-position adjusting tool is used for adjusting the horizontal state of the ship body block to ensure that the longitudinal horizontal degree of the equipment base is in the range of [ e-1 ', e + 1' ]; and then, performing girth welding and fixing on the ship body total section. After the hull block is welded and fixed, measuring whether the longitudinal levelness of the equipment base positioned and installed on the hull block is in the range of [ d-1 ', d + 1' ], if the requirement is met, implementing the next procedure, and if the longitudinal levelness exceeds the interval, finely adjusting the longitudinal levelness of the equipment base during the plane processing of the base.
And 4, step 4: the method comprises the steps of calibrating a center line of a ship body, marking the center line of the ship body on a deck 1 and a deck 01 by using a laser theodolite in combination with a slipway reference line, a block center line and a special equipment base center line when the center line of the ship body is calibrated, marking corresponding ocean rushing points at the same time, arranging installation pictures according to the center line marking boards of the ship body, installing center line marking boards at corresponding positions, and marking the center line of the ship body on the deck 1 and the deck 01 to be used as the only center line reference of the whole ship. After the calibration of the center line of the ship body is finished, a point is respectively arranged at the front section and the rear section of the equipment base to be used as a check point for the re-measurement of the center line of the ship body by erecting the theodolite, and the re-measurement is carried out on the center line of the ship body. And after the central line of the ship body is qualified, taking the central line as an adjusting reference of the longitudinal horizontal value during the base plane processing.
When the equipment base panel is processed, the reference inspection platform is used as a horizontal alignment reference.
Then, by combining the factors of longitudinal position, distance to middle size, height of the base, allowance of inner and outer circles of the base panel, allowance of thickness, level value of the base and the like, marking lines with 0 degree, 90 degrees, 180 degrees and 270 degrees on the base panel of the equipment, processing the base plane by using a quadrant instrument and a central line of a ship body as a longitudinal adjustment reference and using a ring surface milling machine, and adjusting the longitudinal levelness of the base plane to c and the transverse levelness to 0 degree; after the processing is finished, an electronic level meter or a quadrant meter is adopted to detect the longitudinal horizontal value and the transverse horizontal value of the plane of the base, the parallelism numerical value meets the requirement of corresponding indexes, and an inspector records detection data.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that; modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (4)
1. A method for controlling the positioning and mounting accuracy of a special equipment base on a block is characterized by comprising the following steps:
step 1: setting the horizontal deformation d of the base plane when the special equipment base is installed, the horizontal deformation e of the base plane of the special equipment base when the block is carried, and the horizontal deformation c of the base panel of the special equipment base when the ship hull is under normal drainage;
step 2: mounting a special equipment base on the ship body block;
specifically, firstly, determining an installation reference of a special equipment base; then, hoisting the special equipment base to a target position according to an installation reference, adjusting the special equipment base to enable the horizontal bow direction of the base plane to be adjusted to a set horizontal deformation d and the horizontal levelness to be adjusted to 0 degree, and marking a cutting allowance line and a cutting allowance on the base plane; finally, symmetrically welding and fixing the special equipment base;
after cutting allowance is cut on the base plane of the special equipment base, the cutting surface is polished to remove cutting burrs, the mounting position of the special equipment base and the transverse levelness and the longitudinal levelness of the base plane are retested, the deviation of the mounting precision is controlled to be not more than 1mm, and the deviation of the transverse levelness and the longitudinal levelness is controlled to be not more than 1'; after the retest is finished, welding and fixing the special equipment base;
the specific steps for determining the installation reference of the special equipment base are as follows:
erecting a laser theodolite to a target position, leveling the laser theodolite by taking the ground level as a reference, marking a total section central line on a deck of a ship block by using the laser theodolite in combination with a ship block structure line and an actual positioning central line carried by a shipway on the total section, and marking the total section central line as a longitudinal reference line for mounting a special equipment base by using ocean stamp;
taking the ground level as a horizontal reference surface for mounting the special equipment base;
taking a rib position line marked out when the total assembly of the total section is carried out as a transverse datum line for mounting the special equipment base;
and step 3: carrying the hull block on a slipway;
specifically, the hull block is hoisted to a slipway, and the horizontal state of the hull block is adjusted to ensure that the longitudinal levelness of the special equipment base is in the range of [ e-1 ', e + 1' ]; then, performing girth welding and fixing on the hull block;
and 4, step 4: calibrating a central line of a ship body, marking scale lines of 0 degree, 90 degrees, 180 degrees and 270 degrees on a base panel of special equipment, processing a base plane by using a ring surface milling machine by taking the central line of the ship body as a longitudinal adjusting reference by means of a quadrant instrument, and adjusting the longitudinal levelness of the base plane to be c and the transverse levelness to be 0 degree; and after the processing is finished, detecting the longitudinal horizontal value and the transverse horizontal value of the base plane.
2. The method for controlling the positioning and mounting accuracy of the special equipment base on the total section according to claim 1, wherein the specific steps of hoisting the special equipment base to the target position according to the mounting reference in the step 2 are as follows:
firstly, hoisting a special equipment base to a target position of a ship body block, so that a longitudinal scribed line of a cross line which is scribed in advance on the installation part of the special equipment base coincides with the center line of the block, and a transverse scribed line is aligned with a corresponding rib position line;
then, whether the special equipment base is hoisted in place is detected by using the laser theodolite, if the special equipment base meets the specified requirements, the height from the upper plane of the base to the deck of the ship block and the levelness of the upper plane of the base are adjusted, and the horizontal bow direction of the plane of the base is adjusted to the set horizontal deformation d and the horizontal levelness is adjusted to be 0 degree.
3. The method for controlling the positioning and mounting accuracy of the special equipment base on the total section according to claim 1 or 2, wherein the horizontal deformation d = a + c of the base plane of the special equipment base, wherein a is the horizontal deformation of the total section to the base plane of the special equipment base after the main hull structure is complete, and c is the horizontal deformation of the base panel of the special equipment base when the hull is submerged at the normal displacement.
4. The method for controlling the positioning and mounting accuracy of the special equipment base on the total section according to claim 1, wherein after the hull total section is fixed by girth welding in the step 3, whether the longitudinal levelness of the special equipment base on the hull total section is within the range of [ d-1 ', d + 1' ] is measured, and if the requirement is met, the step 4 is executed.
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| CN201811259829.8A CN109606542B (en) | 2018-06-15 | 2018-06-15 | Method for controlling positioning and mounting precision of special equipment base on block |
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| CN201811259829.8A CN109606542B (en) | 2018-06-15 | 2018-06-15 | Method for controlling positioning and mounting precision of special equipment base on block |
| CN201810623015.1A CN108974250B (en) | 2018-06-15 | 2018-06-15 | Method for controlling positioning and mounting precision of special equipment base on block |
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| CN201810623015.1A Division CN108974250B (en) | 2018-06-15 | 2018-06-15 | Method for controlling positioning and mounting precision of special equipment base on block |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108974250A (en) | 2018-12-11 |
| CN108974250B (en) | 2020-10-27 |
| CN109606542A (en) | 2019-04-12 |
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