CN115610613A - Ship water gauge installation precision control method - Google Patents

Ship water gauge installation precision control method Download PDF

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Publication number
CN115610613A
CN115610613A CN202211204378.4A CN202211204378A CN115610613A CN 115610613 A CN115610613 A CN 115610613A CN 202211204378 A CN202211204378 A CN 202211204378A CN 115610613 A CN115610613 A CN 115610613A
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CN
China
Prior art keywords
water gauge
section
stern
total
bow
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Pending
Application number
CN202211204378.4A
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Chinese (zh)
Inventor
戴小明
周建华
刘宇
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CSSC Huangpu Wenchong Shipbuilding Co Ltd
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CSSC Huangpu Wenchong Shipbuilding Co Ltd
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Priority to CN202211204378.4A priority Critical patent/CN115610613A/en
Publication of CN115610613A publication Critical patent/CN115610613A/en
Pending legal-status Critical Current

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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
    • B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/12—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude for indicating draught or load
    • 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
    • B63B73/30—Moving or transporting modules or hull blocks to assembly sites, e.g. by rolling, lifting or floating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
    • B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
    • B63B73/43—Welding, e.g. laser welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2221/00—Methods and means for joining members or elements
    • B63B2221/02—Methods and means for joining members or elements by welding

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Underground Or Underwater Handling Of Building Materials (AREA)

Abstract

The invention relates to the technical field of ship water gauges, in particular to a ship water gauge installation precision control method. The method for controlling the installation precision of the water gauge of the ship comprises the following steps: in the total assembly stage, water gauge lines of the midship total section, the bow total section and the stern total section are respectively drawn by taking a base line of the midship total section of the ship as a water gauge installation reference; and respectively installing water gauges on the midship total section, the stern total section and the bow total section according to the water gauge lines. In the carrying stage, the midship section, the stern section and the bow section are sequentially hoisted and positioned by taking the water gauge installation reference as a carrying reference, and the water gauge in the total assembly stage and the water gauge after the carrying stage are on the same reference because the installation reference of the water gauge in the total assembly stage is consistent with the carrying reference of the carrying stage, so that the installation precision of the water gauge is improved, and the construction requirement of a ship can be met.

Description

Ship water gauge installation precision control method
Technical Field
The invention relates to the technical field of ship water gauges, in particular to a ship water gauge installation precision control method.
Background
The water gauge of a ship is a size marker installed on the hull of the ship so as to visually check the draught state of the ship during sailing.
At present, water gauges are respectively arranged on a midship total section, a bow total section and a stern total section by taking a base line of the midship total section as an installation reference. The water gauge installation stage is usually completed before the water gauge is moved forward from the loading stage to the total assembly stage, so that the water gauge installation stage is prevented from being overlapped with the loading welding, the fitting-out and coating processes of a dock, and the ship construction efficiency is improved. In the subsequent carrying stage, the three headquarters (the midship headquarter, the bow headquarter and the stern headquarter) are different from the water gauge mounting reference in the total assembly stage by taking the height reference line of the dock as the carrying reference, so that the three water gauges after carrying are not on the same reference, and the mounting precision of the water gauges is difficult to meet the construction requirement.
Therefore, a method for controlling the installation accuracy of a ship water gauge is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a method for controlling the installation accuracy of a water gauge of a ship, which aims to improve the installation accuracy of the water gauge after the ship carrying stage.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a ship water gauge installation accuracy control method comprises the following steps:
in the total assembly stage, water gauge lines of the midship total section, the bow total section and the stern total section are respectively drawn by taking a base line of the midship total section of the ship as a water gauge installation reference; respectively installing water gauges on the midship total section, the stern total section and the bow total section according to the water gauge lines;
in the carrying stage, the water gauge installation reference is used as a carrying reference, and the midship trunk section, the stern trunk section and the bow trunk section are hoisted and positioned in sequence, so that the water gauge in the total assembly stage and the water gauge after the carrying stage are on the same reference.
Preferably, before the carrying stage, the midship total section, the stern total section and the bow total section are carried in a simulation mode by taking the water gauge installation reference as the carrying reference.
Preferably, in a carrying stage, the midship total segment is hoisted and positioned according to the carrying benchmark;
determining a first height reference of the stern section according to the baseline flexibility of the midship section, and hoisting and positioning the stern section according to the first height reference;
and determining a second height standard of the bow total section according to the baseline flexibility of the midship total section and the stern total section, and hoisting and positioning the bow total section according to the second height standard.
Preferably, the first height reference is 6-8 mm higher than the theoretical height reference of the stern total section during simulated mounting; the second height reference is 6-8 mm higher than the theoretical height reference of the bow total section during analog carrying.
Preferably, before the midship subsection is hoisted and positioned, loading dock blocks and supporting pieces are paved in a dock according to the loading reference.
Preferably, when the docking block is arranged, the parallelism tolerance of the bearing surface at the upper end of the docking block is within +/-5 mm.
Preferably, a rigid pier is additionally arranged in a region corresponding to the bow main section and the stern main section.
As a preferred scheme, after the lapping stage is completed, the supporting members corresponding to the stern main section and the bow main section are symmetrically dismantled, and the sinkage of the stern main section and the bow main section is monitored.
Preferably, the water gauges are mounted on the midship total section, the bow total section and the stern total section through welding, and dimension checking is performed before and after the water gauges are welded.
Preferably, after the water gauge is welded, the area where the water gauge is installed is coated.
The invention has the beneficial effects that:
in the general assembly stage, water gauge lines are respectively surveyed and drawn in the midship section, the bow section and the stern section by taking a base line of the midship section as a water gauge installation reference, and the water gauges are respectively installed in the three sections according to the water gauge lines. And in the carrying stage, the midship total section, the stern total section and the bow total section are hoisted and positioned in sequence by taking the water gauge installation reference as a carrying reference. Because the installation reference of the water gauge in the total assembly stage is consistent with the carrying reference in the carrying stage, the water gauge in the total assembly stage and the water gauge after the carrying stage are on the same reference, the installation precision of the water gauge is improved, and the construction requirement of the ship can be met.
Drawings
Fig. 1 is a main flowchart of a method for controlling installation accuracy of a water gauge of a ship according to an embodiment of the present invention.
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 features relevant to 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 a specific case to those of ordinary skill 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 "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply 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.
As shown in fig. 1, the present embodiment provides a method for controlling installation accuracy of a water gauge of a ship, including the following steps: in the general assembly stage, water gauge lines of a midship total section, a bow total section and a stern total section are respectively drawn by taking a base line of the midship total section of the ship as a water gauge installation reference; and water gauges are respectively arranged on the midship section, the stern section and the bow section according to water gauge lines. The installation stage of the water gauge is completed before the assembly stage is moved forward from the loading stage, so that the cross overlapping of the installation stage of the water gauge and the loading and welding, outfitting and coating processes of a dock is avoided, and the ship construction efficiency is improved.
Before the total assembly stage, the midship total section, the stern total section and the bow total section are simulated and carried, and the deflection of the ship body is calculated according to the ship body data obtained through simulation, so that the carried total section can meet the building requirement of the ship. The above-mentioned simulated carrying and hull deflection calculation are conventional technical means of those skilled in the art, and are not described herein again.
In this embodiment, a water gauge line can be drawn by using a sample punching tool or the like. Of course, other methods or tools may be used to map the water gauge line, and are not limited in this regard.
Further, the water gauges are mounted on the midship trunk section, the bow trunk section and the stern trunk section through welding, and dimension checking is performed before and after the water gauges are welded. And welding marks (such as characters, numbers and the like) of the water gauge to the area of the water gauge line in each general section in a welding mode so as to realize reliable installation of the water gauge. Specifically, all the signs of the water gauge are cut from a 6mm thick steel plate, and the curvature of the hull is taken into account to ensure that the water gauge is welded snugly in the water gauge line area. Meanwhile, the installation tolerance of the water gauge line and the water gauge is controlled within +/-1 mm, so that the installation precision of the water gauge is ensured. In addition, the dimension inspection before and after welding is carried out through measuring tools such as a measuring tape and a total station, and the installation precision of the water gauge is further improved. Since the dimension inspection before and after welding is a conventional process for water gauge installation, the dimension inspection process is not described in detail.
Because the reconnaissance of water gauge line is drawn and the welding installation of water gauge has destroyed the lacquer layer on each total section, consequently, after the water gauge welding is accomplished, at the region of installing the water gauge and carry out the application to repair the lacquer layer of water gauge installation region, guarantee the integrality of each total section outside lacquer layer, avoid water gauge welded area to take place to corrode and rust.
And after the water gauge is installed, the ship is built and enters a carrying stage. In the carrying stage, the height datum lines of the docks of the three sections (the midship section, the bow section and the stern section) are used as carrying datum lines and are inconsistent with the water gauge mounting datum in the total assembly stage, so that after the three sections are carried, the water gauges on the three sections are not on the same datum line, and the mounting precision of the water gauges is difficult to meet the building requirement.
In order to solve the above problem, as shown in fig. 1, the method for controlling the installation accuracy of the water gauge of the ship further comprises the following steps: in the carrying stage, the midship section, the stern section and the bow section are hoisted and positioned in sequence by taking the water gauge installation datum as a carrying datum, so that the installation datum of the water gauge in the total assembly stage is consistent with the carrying datum in the carrying stage, three water gauges after carrying are not on the same datum, the installation precision of the water gauges is improved, and the construction requirement of a ship can be met.
Before the carrying stage, simulation carrying is carried out on the midship total section, the stern total section and the bow total section by taking the water gauge mounting reference as a carrying reference, so that dislocation in the height direction can not occur after the three total sections are carried by taking the water gauge mounting reference as the carrying reference, and carrying precision and carrying quality are improved.
Before the midship section is hoisted and positioned, loading dock blocks and supporting pieces are paved in a dock according to loading benchmarks. Namely, after the loading is simulated, docking blocks are arranged in the appointed field and position of the dock according to the loading block layout drawing so as to ensure that each block is uniformly stressed. It should be noted that the docking block is typically a wooden block.
Furthermore, when the docking block is arranged, the parallelism tolerance of the bearing surface at the upper end of the docking block is within +/-5 mm, so that the levelness of the carrying plane of each block is basically kept consistent, and the hoisting positioning precision of each block is improved.
It can be understood that the bow and stern sections after being hoisted and positioned have a sinking trend due to the self structural characteristics of the bow and stern sections. Therefore, the rigid pier is additionally arranged in the corresponding area of the bow total section and the stern total section. For example, rigid piers can be added between adjacent docking piers to improve the support of a bow total section and a stern total section, reduce the sinking amount of the bow total section and the stern total section, reduce the deviation value of the average base line of the whole ship after the ship is loaded, and improve the loading quality. The rigid piers of this embodiment may be steel docking piers or cement piers, and the like, which is not limited in this embodiment.
In the carrying process, all the segments are respectively hoisted to the docking block and the supporting piece through a special hoisting tool in the dock so as to facilitate the subsequent welding process.
Specifically, in the carrying stage, the midship total segment is hoisted and positioned according to a carrying benchmark. And determining a first height reference of the stern section according to the baseline deflection of the midship section, and hoisting and positioning the stern section according to the first height reference. And determining a second height standard of the bow total section according to the baseline flexibility of the midship total section and the stern total section, and hoisting and positioning the bow total section according to the second height standard. The process of determining the height reference through the baseline deflection is completed during the simulated loading between the total assembly stage and the loading stage, and the process of determining the height reference of each total section through the baseline deflection is a conventional technical means of the ship construction process, so the specific process is not repeated.
Furthermore, when the stern main section and the bow main section are hoisted and positioned, the size data of the water gauge on each main section based on the carrying reference needs to be monitored and recorded in real time so as to ensure that the water gauges in the total assembly stage and the water gauge behind the carrying stage are on the same reference.
Preferably, in order to offset the dislocation of the height direction after the head total section and the stern total section are mounted due to the sinking of the head total section and the stern total section, the first height reference is 6mm to 8mm higher than the theoretical height reference of the stern total section during the simulated mounting. The second height standard is 6-8 mm higher than the theoretical height standard of the bow total section during analog carrying. Namely, when the bow main section and the stern main section are hoisted and positioned, the hoisting heights of the two main sections are respectively increased so as to realize the anti-deformation design of 6 mm-8 mm, thus offsetting the subsidence of the two main sections, realizing the precise hoisting and positioning of the three main sections and improving the carrying quality.
It should be noted that, after the lapping stage is completed, the support members corresponding to the stern section and the bow section are symmetrically removed, and the sinkage of the stern section and the bow section is monitored. And if the sinkage of the stern main section and the bow main section exceeds the reverse deformation design, namely 6-8 mm, immediately stopping support dismantling, checking the change condition of the baseline of the whole ship, rechecking whether the absolute horizontal data deviation of each water gauge is kept within +/-1 mm, and continuing support dismantling operation if the three water gauges are positioned in the same standard.
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 (10)

1. A ship water gauge installation accuracy control method is characterized by comprising the following steps:
in the general assembly stage, water gauge lines of a midship total section, a bow total section and a stern total section are respectively drawn by taking a base line of the midship total section of a ship as a water gauge installation reference; respectively installing water gauges on the midship total section, the stern total section and the bow total section according to the water gauge lines;
in the carrying stage, the water gauge installation reference is used as a carrying reference, and the midship trunk section, the stern trunk section and the bow trunk section are hoisted and positioned in sequence, so that the water gauge in the total assembly stage and the water gauge after the carrying stage are on the same reference.
2. The method for controlling the installation accuracy of the water gauge of the ship according to claim 1, wherein before a carrying stage, the midship trunk section, the stern trunk section and the bow trunk section are carried out in a simulated manner by taking the water gauge installation reference as the carrying reference.
3. The method for controlling the installation accuracy of the water gauge of the ship according to claim 2, wherein in a carrying stage, the midship subsection is hoisted and positioned according to the carrying datum;
determining a first height reference of the stern section according to the baseline flexibility of the midship section, and hoisting and positioning the stern section according to the first height reference;
and determining a second height standard of the bow total section according to the baseline flexibility of the midship total section and the stern total section, and hoisting and positioning the bow total section according to the second height standard.
4. The method for controlling the installation accuracy of the water gauge of the ship according to claim 3, wherein the first height reference is 6mm to 8mm higher than a theoretical height reference of the stern section in the simulated mounting; the second height reference is 6-8 mm higher than the theoretical height reference of the bow total section during analog carrying.
5. The method for controlling the installation accuracy of the water gauge of the ship according to claim 1, wherein before the midship subsection is hoisted and positioned, the loading dock blocks and the supporting pieces are laid in the dock according to the loading reference.
6. The method for controlling the installation accuracy of the water gauge of the ship according to claim 5, wherein the parallelism tolerance of the bearing surface of the upper end of the docking block is within +/-5 mm when the docking block is arranged.
7. The method for controlling the installation accuracy of the water gauge of the ship according to claim 5, wherein a rigid pier is additionally arranged in a region corresponding to the bow main section and the stern main section.
8. The method for controlling the installation accuracy of the ship water gauge according to claim 5, wherein after the lapping step is completed, the supporting members corresponding to the stern portion block and the bow portion block are symmetrically removed, and the sinkage of the stern portion block and the bow portion block is monitored.
9. The method for controlling the installation accuracy of the water gauge of a ship according to claim 1, wherein the water gauge is installed on the midship trunk, the bow trunk and the stern trunk by welding and is checked for size before and after the welding.
10. The method for controlling the installation accuracy of the water gauge of the ship according to claim 9, wherein after the welding of the water gauge is completed, a coating is applied to a region where the water gauge is installed.
CN202211204378.4A 2022-09-29 2022-09-29 Ship water gauge installation precision control method Pending CN115610613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211204378.4A CN115610613A (en) 2022-09-29 2022-09-29 Ship water gauge installation precision control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211204378.4A CN115610613A (en) 2022-09-29 2022-09-29 Ship water gauge installation precision control method

Publications (1)

Publication Number Publication Date
CN115610613A true CN115610613A (en) 2023-01-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211204378.4A Pending CN115610613A (en) 2022-09-29 2022-09-29 Ship water gauge installation precision control method

Country Status (1)

Country Link
CN (1) CN115610613A (en)

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