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CN-121973906-A - Bow mounting method, bow and floating platform

CN121973906ACN 121973906 ACN121973906 ACN 121973906ACN-121973906-A

Abstract

The invention belongs to the technical field of ship construction, and discloses a bow installation method, a bow and a floating platform. The bow installation method comprises the steps of positioning a bow upper section, installing an upper casting on the bow upper section by taking the bow upper section as a reference, setting a first butt joint reference on the interface cross section of the upper casting, positioning a bow lower section, installing a lower casting on the bow lower section by taking the bow lower section as a reference, setting a second butt joint reference on the interface cross section of the lower casting, hoisting the bow upper section with the upper casting installed on the bow lower section with the lower casting installed thereon, butt-jointing the interface cross section of the upper casting and the interface cross section of the lower casting, enabling the first butt joint reference to correspond to the second butt joint reference, welding the bow upper section and the bow lower section, and welding the upper casting and the lower casting. The bow installation method can improve the installation and positioning accuracy of each part of the bow and improve the manufacturing quality of the bow.

Inventors

  • LUO BINGZHONG
  • LIU ZEXU
  • JIA ZHUANGLONG
  • XIE ZHUAN
  • HE MINGZHI
  • XIONG XIN
  • ZHONG QIN

Assignees

  • 中船黄埔文冲船舶有限公司

Dates

Publication Date
20260505
Application Date
20260325

Claims (10)

  1. 1. The bow installation method is characterized by comprising the following steps: s10, positioning a bow upper section (100), and mounting an upper casting (200) on the bow upper section (100) by taking the bow upper section (100) as a reference; S20, setting a first butt joint reference on the cross section of an interface of the upper casting (200); s30, positioning a lower bow section (300), and mounting a lower casting (400) on the lower bow section (300) by taking the lower bow section (300) as a reference; S40, setting a second butt joint reference on the cross section of the interface of the lower casting (400); S50, hoisting a bow upper section (100) provided with an upper casting (200) onto a bow lower section (300) provided with a lower casting (400), and enabling the interface cross section of the upper casting (200) to be in butt joint with the interface cross section of the lower casting (400), so that the first butt joint reference corresponds to the second butt joint reference; S60, welding the upper bow section (100) and the lower bow section (300), and welding the upper casting (200) and the lower casting (400).
  2. 2. The bow installation method according to claim 1, wherein the first butt joint reference comprises a plurality of first butt joint mark points (500), and the first butt joint mark points (500) are arranged at both the apex angle and the turning point of the interface cross section of the upper casting (200); the second butt joint datum comprises a plurality of second butt joint mark points, and the second butt joint mark points are arranged at the vertex angle and the turning position of the interface cross section of the lower casting (400).
  3. 3. The bow mounting method according to claim 2, wherein step S50 includes: s51, monitoring coordinates of a first butt joint mark point (500) and monitoring coordinates of a second butt joint mark point in the process of hoisting a bow upper section (100) provided with an upper casting (200); S52, under the theoretical model coordinates, the position of the first butt joint mark point (500) is adjusted by taking the second butt joint mark point as a reference until the coordinates of the first butt joint mark point (500) and the corresponding second butt joint mark point coincide, and the butt joint of the upper casting (200) and the lower casting (400) is completed.
  4. 4. A method of installing a bow according to claim 3, wherein the first docking mark point (500) and the second docking mark point are each provided with a reflective target, and the three-dimensional coordinates of the plurality of reflective targets are measured by a total station in S51, so that the coordinates of the first docking mark point (500) and the second docking mark point are monitored.
  5. 5. The method for installing the bow according to claim 3, wherein in S52, first, the second docking mark point is positioned under the theoretical model coordinates, and when the three-way deviation between the actual position and the theoretical position of the second docking mark point is not greater than the allowable error value, it is judged that the positioning of the second docking mark point is completed; then, the position of the first docking mark point (500) is adjusted based on the actual position of the second docking mark point.
  6. 6. The method of installing a bow according to claim 5, wherein the allowable error value is 3mm.
  7. 7. The method of installing the bow according to claim 1, wherein the welding of the upper casting (200) and the lower casting (400) is performed while the welding is performed in S60: performing real-time measurement and monitoring on butt joint monitoring amounts of the upper casting (200) and the lower casting (400), wherein the butt joint monitoring amounts comprise space position variation amounts of a first butt joint reference and a second butt joint reference, and height variation amounts, length variation amounts and width variation amounts at a casting butt joint section (600) between the upper casting (200) and the lower casting (400); and when the deviation of the butt joint monitoring quantity exceeds the preset deviation, the welding direction is adjusted.
  8. 8. The method of installing the bow according to claim 7, wherein in S60, the butt joint of the upper casting (200) and the lower casting (400) is welded at the same time on both sides in the lateral direction of the bow; And simultaneously welding the upper bow section (100) and the lower bow section (300) on two lateral sides of the bow.
  9. 9. The bow is installed by adopting the bow installation method according to any one of claims 1-8, the bow comprises a bow upper section (100), a bow lower section (300), an upper casting (200) and a lower casting (400), the upper casting (200) is installed on the bow upper section (100), the lower casting (400) is installed on the bow lower section (300), the bow upper section (100) is mutually butted with the bow lower section (300), and the upper casting (200) and the lower casting (400) are mutually butted.
  10. 10. A floating platform, characterized in that, the floating platform comprising the bow of claim 9.

Description

Bow mounting method, bow and floating platform Technical Field The invention relates to the technical field of ship construction, in particular to a bow installation method, a bow and a floating platform. Background At present, the floating platform generally adopts an overlength cast steel piece to span and connect the upper bow section and the lower bow section so as to realize the allowance-free butt joint of the upper bow section and the lower bow section. When the upper bow section and the lower bow section are in butt joint connection, the requirement on the installation precision is extremely high, and the deviation of the central line, the profile line and the perpendicularity is required to be controlled within +/-3 mm. However, the butt joint process has the following difficulties that firstly, the positioning of the lower bow section is carried out in a suspended manner, the positioning difficulty is extremely high, and secondly, the sizes of the upper bow section and the lower bow section are extremely large, so that the positioning and mounting difficulties are increased. In addition, the part of the joint of the upper bow section and the lower bow section is of a herringbone complex structure, so that the difficulty of installation is further increased. Finally, the deformations that occur during welding of the upper and lower bow sections are irreversible, which requires that the welding deformations have to be tightly controlled during welding in order to avoid affecting the final mounting accuracy. The existing butt joint method is difficult to meet the high-precision installation requirement. Accordingly, there is a need for a bow mounting method, bow and floating platform that solves the above problems. Disclosure of Invention According to one aspect of the present invention, it is an object to provide a method of installing a bow, which can improve the accuracy of installing and positioning each portion of the bow and can improve the manufacturing quality of the bow. To achieve the purpose, the invention adopts the following technical scheme: the bow installation method comprises the following steps: S10, positioning an upper segment of the bow part, and mounting an upper casting on the upper segment of the bow part by taking the upper segment of the bow part as a reference; s20, setting a first butt joint reference on the cross section of an interface of the upper casting; s30, positioning a lower bow section, and mounting a lower casting on the lower bow section by taking the lower bow section as a reference; S40, setting a second butt joint reference on the cross section of the interface of the lower casting; S50, hoisting the upper part of the bow part provided with the upper casting onto the lower part of the bow part provided with the lower casting in a segmented manner, and abutting and folding the cross section of the interface of the upper casting with the cross section of the interface of the lower casting so that the first abutting reference corresponds to the second abutting reference; s60, welding the upper part of the bow section and the lower part of the bow section, and welding the upper casting and the lower casting. As the preferable scheme of the bow installation method provided by the invention, the first butt joint reference comprises a plurality of first butt joint mark points, and the first butt joint mark points are arranged at the vertex angle and turning position of the interface cross section of the upper casting; The second butt joint datum comprises a plurality of second butt joint mark points, and the second butt joint mark points are arranged at the vertex angle and the turning position of the interface cross section of the lower casting. As a preferable embodiment of the method for installing a bow provided by the present invention, step S50 includes: S51, monitoring coordinates of a first butt joint mark point and monitoring coordinates of a second butt joint mark point in the process of sectionally hoisting a bow part provided with an upper casting; And S52, under the theoretical model coordinates, taking the second butt joint mark point as a reference, adjusting the position of the first butt joint mark point until the coordinates of the first butt joint mark point and the corresponding second butt joint mark point coincide, and finishing the butt joint of the upper casting and the lower casting. As the preferable scheme of the bow installation method provided by the invention, the first docking mark point and the second docking mark point are respectively provided with the reflecting target pieces, and the three-dimensional coordinates of the reflecting target pieces are measured by using the total station in S51, so that the coordinates of the first docking mark point and the second docking mark point are monitored. As the preferred scheme of the bow installation method provided by the invention, in S52, firstly, the second docking mark point is posit