A method for loading a transverse bulkhead section of an ultra large container ship

Abstract

The application discloses a method for loading a transverse bulkhead unit of an ultra-large container ship, which comprises the following steps: confirming the transverse rib plate serial number of the transverse bulkhead unit in sequence, temporarily fixing a transverse continuous structure and a loading plate with an inclined surface, hoisting the transverse bulkhead unit, welding the transverse bulkhead unit and removing the temporary fixing part, and completing the loading. The method avoids deformation of the transverse bulkhead during the loading process, guarantees the accuracy of the bulkhead capacity, avoids deformation of the double-layer bottom plate caused by the loading guide of the transverse bulkhead, can accurately position the transverse bulkhead, speeds up the unhooking speed of the transverse bulkhead unit and the hoisting equipment, increases the operation frequency of the hoisting equipment, and improves the utilization rate of the dock resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shipbuilding technology, and particularly relates to a method for loading a transverse bulkhead section of a super large container ship. BACKGROUND

[0002] With the continuous development of the shipbuilding industry, container ships gradually develop towards large-scale. The cargo hold opening of a super large container ship is wide and long, and the transverse strength of the whole ship mainly depends on the transverse bulkhead. The transverse bulkhead of the super large container ship is generally arranged between multiple standard containers and extends from the inner bottom or the bottom of the cargo hold to the transverse hatch coaming top plate. In order to reduce the empty ship mass and improve the performance index of the container ship, the transverse bulkhead is designed to be increasingly lightweight, which causes the transverse bulkhead to be easily deformed during loading, the capacity of the transverse bulkhead is difficult to control, and the loading and unloading of containers are not conducive. In the prior art, the position of the transverse bulkhead section is adjusted by moving the transverse bulkhead section fore and aft through the cooperation of hoisting equipment, a top distance-keeping beam and a bottom pull pump, which causes the positioning of the transverse bulkhead section of the super large container ship to be difficult during loading, and the hoisting equipment occupies a long time, therefore, the problem of how to accurately and quickly load the transverse bulkhead section of the super large container ship needs to be solved. SUMMARY

[0003] In view of the defects in the prior art, the present application provides a method for loading a transverse bulkhead section of a super large container ship to solve the technical problems of inaccurate loading capacity and slow loading speed of the transverse bulkhead section of the super large container ship in the prior art.

[0004] In order to achieve the above-mentioned purposes, the technical solutions of the present application are as follows:

[0005] A method for loading a transverse bulkhead section of a super large container ship, the transverse bulkhead section comprising a plurality of transverse bulkhead section reinforcing structures arranged along the ship width direction, the transverse bulkhead section reinforcing structure being perpendicular to the double bottom after loading is completed, the loading method comprising the following steps:

[0006] S1, aligning the bow bulkhead or stern bulkhead of the transverse bulkhead section after loading with the transverse rib plate opposite the inner bottom plate of the double bottom, and confirming the serial number of the transverse rib plate to which the bow bulkhead or stern bulkhead of the transverse bulkhead section is to be aligned;

[0007] S2, temporarily fixing a transverse continuous structure on the lower side of the transverse bulkhead section, the transverse continuous structure being vertically fixed to the plurality of transverse bulkhead section reinforcing structures, a plurality of loading plates being vertically fixed at the pre-placing position of the transverse bulkhead section reinforcing structure on the upper surface of the inner bottom plate, the upper side of the loading plate being provided with a downward inclined inclined surface, the inclined surface facing the pre-placing position of the transverse bulkhead section, the lower end of the inclined surface being provided with a vertical surface, the horizontal distance between the vertical surface of the loading plate and the rib plate surface of the transverse rib plate selected in S1 being equal to the wall thickness of the bow bulkhead or stern bulkhead of the transverse bulkhead section, and the height of the loading plate being less than the distance between the transverse continuous structure and the lower end of the transverse bulkhead section;

[0008] S3, hoisting the transverse bulkhead section, and guiding the lower end of the transverse bulkhead section to slide along the inclined surface of the mounting plate installed in S2 to the inner bottom plate, and aligning the bow bulkhead or stern bulkhead of the transverse bulkhead section with the transverse rib plate identified in S1; releasing the hook of the crane, and removing the hoisting equipment;

[0009] S4, welding the transverse bulkhead section, and removing the temporary fixing components to complete the mounting.

[0010] In an embodiment, the transverse continuous structure is an I-beam, the distance between the transverse continuous structure and the lower end of the transverse bulkhead section is 600 mm, and the height of the mounting plate is less than 500 mm.

[0011] In an embodiment, the mounting plate is in the shape of a right-angled trapezoid, the short side of the mounting plate faces the pre-placed position of the transverse bulkhead section, and the straight side of the mounting plate is fixedly connected with the inner bottom plate.

[0012] In an embodiment, the height of the long side of the mounting plate is 300 mm, the height of the short side of the mounting plate is 150 mm, and the thickness of the mounting plate is 12-20 mm.

[0013] In an embodiment, one mounting plate is arranged on the centerline of the ship body, the mounting plates are symmetrically arranged about the centerline of the ship body, and the distance between the vertical surface of the mounting plate and the horizontal surface of the rib plate of the selected transverse rib plate in S1 is equal to 24 mm.

[0014] In an embodiment, step S3 further includes, before releasing the hook of the crane, symmetrically fixing and mounting a constraint plate on the bow bulkhead and the stern bulkhead of the transverse bulkhead section, and symmetrically performing constraint welding about the centerline of the ship body at the positions where the left and right ends of the transverse bulkhead section 1 contact with the bilge step, the constraint plate is in the shape of a rectangle, the vertical side of the constraint plate is welded with the strengthening structure of the transverse bulkhead section, and the horizontal side of the constraint plate is welded with the inner bottom plate.

[0015] In an embodiment, the length of the weld on the constraint plate is greater than or equal to 150 mm, and the length of the weld of the constraint welding is greater than or equal to 500 mm.

[0016] In an embodiment, in the ship width direction, a plurality of constraint plates are symmetrically arranged on the inner bottom plate about the centerline of the ship body.

[0017] In an embodiment, the temporary fixing components removed in step S4 include the transverse continuous structure, the mounting plate, and the constraint plate.

[0018] Compared with the prior art, the present application has at least the following beneficial effects:

[0019] The transverse continuous structure is temporarily fixed at the lower side of the transverse bulkhead section of the super large container ship in the application, so that the deformation of the transverse bulkhead during the loading process is avoided, and the accuracy of the bulkhead capacity is ensured. The loading plate with the inclined surface is arranged on the inner bottom plate, and the loading plate is installed at the position of the inner bottom plate with the transverse rib plate, so that the transverse bulkhead section can slide downward along the inclined surface during the loading process. Not only the deformation of the double bottom plate caused by the loading guide of the transverse bulkhead is avoided, but also the transverse bulkhead can be accurately positioned. By arranging the restraint horse plate and the restraint welding, the verticality of the transverse bulkhead section after positioning can be ensured, the transverse bulkhead section can be quickly unhooked from the hoisting equipment, the operation frequency of the hoisting equipment is increased, and the utilization rate of the dock resources is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a general schematic diagram of the loading of the transverse bulkhead section of the super large container ship in the embodiment of the application;

[0021] Figure 2 is Figure 1 an enlarged schematic diagram of A in the embodiment of the application;

[0022] Figure 3 is a schematic diagram of the connection between the loading plate and the inner bottom plate in the embodiment of the application;

[0023] Figure 4 is a schematic diagram of the connection between the restraint horse plate, the inner bottom plate and the transverse bulkhead section in the embodiment of the application.

[0024] The specific description of the reference signs is as follows: the transverse bulkhead section 1, the transverse bulkhead section reinforcing structure 101, the transverse continuous structure 102, the double bottom 2, the inner bottom plate 201, the transverse rib plate 202, the loading plate 3, the restraint horse plate 4, the bilge step 5, the restraint welding 6. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described below by means of specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0026] The terms used in the present disclosure are merely for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0027] It should be understood that, although the terms first, second, third, etc. can be employed in describing various information in the disclosure, the information should not be limited to these terms solely based on the context in which they are used and cannot be understood as indicating or implying relative importance. These terms are only used to distinguish one type of information from another. For example, without departing from the scope of the disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon determination" or "in response to determining".

[0028] In the description of the present application, unless otherwise specified and limited, it is necessary to explain that the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be mechanical connection, or internal communication of two elements, it can be direct connection, or indirect connection through intermediate medium, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0029] In order to better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings.

[0030] The embodiment provides a method for loading a transverse bulkhead unit section of an ultra-large container ship, as shown in the figure, the transverse bulkhead unit section 1 comprises a plurality of transverse bulkhead unit section reinforcing structures 101 arranged in the ship width direction, the transverse bulkhead unit section reinforcing structure 101 is perpendicular to the double bottom 2 after loading is completed, and the loading method comprises the following steps: Figure 1

[0031] S1, align the transverse bulkhead of the transverse bulkhead unit section 1 with the inner bottom plate 201 of the double bottom 2 after loading, and confirm the serial number of the transverse bulkhead of the transverse bulkhead unit section 1 to be aligned.

[0032] As shown in the figure, the bow bulkhead of the transverse bulkhead unit section 1 is aligned with the inner bottom plate 201 in the embodiment. Figure 3

[0033] S2, temporarily fix the transverse continuous structure 102 on the lower side of the transverse bulkhead unit section 1, the transverse continuous structure 102 is vertically fixed to the plurality of transverse bulkhead unit section reinforcing structures 101, and a plurality of loading plates 3 are vertically fixed at the pre-placing position of the transverse bulkhead unit section reinforcing structure 101 on the upper surface of the inner bottom plate, as shown in the figure. Figure 3 The upper side of the loading plate 3 is provided with a downward inclined inclined surface, the inclined surface faces the pre-placing position of the transverse bulkhead unit section, the lower end of the inclined surface is provided with a vertical surface, the horizontal distance between the vertical surface of the loading plate 3 and the rib plate surface of the transverse rib plate 202 selected in S1 is equal to the wall thickness of the bow bulkhead or the stern bulkhead of the transverse bulkhead unit section 1, and the height of the loading plate 3 is less than the distance between the transverse continuous structure 102 and the lower end of the transverse bulkhead unit section 1. ​​

[0034] In this embodiment, the transverse continuous structure 102 is an I-beam, the distance between the transverse continuous structure 102 and the lower end of the transverse bulkhead section 1 is 600mm, and the height of the mounting plate 3 is less than 500mm. Figure 2 As shown, in this embodiment, the mounting plate 3 is a right-angled trapezoid, with its short side facing the pre-placed position of the transverse bulkhead section, and its straight side fixedly connected to the inner bottom plate 201. The height of the long side of the mounting plate 3 is 300mm, the height of the short side of the mounting plate 3 is 150mm, and the thickness of the mounting plate 3 is 12-20mm.

[0035] Through holes are provided on mounting plate 3, through which ropes can pass for storage and transfer of mounting plate 3. In order to meet the welding leg height requirements of the corner joint of the transverse bulkhead section, the right angle of the short side of mounting plate 3 is chamfered.

[0036] In this embodiment, a mounting plate 3 is provided on the centerline of the hull, and mounting plates 3 are symmetrically arranged about the left and right sides of the centerline of the hull. The distance between the vertical surface of the mounting plate 3 and the horizontal surface of the rib surface of the transverse rib 202 selected in S1 is equal to 24mm.

[0037] Mounting plate 3 is installed inside the double bottom where there are transverse ribs to prevent deformation of the double bottom plate during the mounting and guiding of the transverse bulkhead. After mounting plate 3 is installed, the bulkhead section slides down along the inclined guide surface to the double bottom 2, and the front end of the transverse bulkhead wall thickness is aligned with the front end of the rib plate thickness inside the double bottom, thereby enabling precise positioning of the transverse bulkhead.

[0038] S3. Lift the transverse bulkhead section 1, guiding the lower end of the transverse bulkhead section 1 to slide down along the inclined surface of the mounting plate 3 installed in S2, and onto the inner bottom plate 201 of the double bottom 2, so that the bow or stern bulkhead of the transverse bulkhead section 1 is aligned with the transverse rib 202 confirmed in S1; release the crane hook and drive away the lifting equipment.

[0039] S4. Weld the transverse bulkhead section 1, remove the temporary fixing components, and complete the loading.

[0040] This embodiment also includes, in step S3, before the crane hook is released, as follows: Figure 4 As shown, restraint plates 4 are symmetrically fixedly installed on the bow and stern bulkheads of the transverse bulkhead section 1. Restraint welding is symmetrically performed about the hull centerline at the contact points between the transverse bulkhead section 1 and the bilge steps 5 at both ends. The restraint plates 4 are rectangular in shape. The vertical side of the restraint plates 4 is welded to the reinforcing structure 101 of the transverse bulkhead section, and the horizontal side of the restraint plates 4 is welded to the inner bottom plate 201. The length and width of the restraint plates 4 are both 200mm.

[0041] In order to ensure that the constraint horse plate 4 is constrained to the transverse bulkhead section, the length of the weld on the constraint horse plate 4 is greater than or equal to 150mm, and the length of the constraint weld is greater than or equal to 500mm. Along the ship width direction, the plurality of constraint horse plates 4 are symmetrically arranged about the centerline of the ship body.

[0042] By arranging the constraint horse plate and the constraint weld, the verticality of the transverse bulkhead section 1 after positioning can be ensured, the transverse bulkhead section 1 can be quickly unhooked from the hoisting equipment, the operation frequency of the hoisting equipment is increased, and the utilization rate of the dock resources is improved.

[0043] The temporary fixing components removed in step S4 include the transverse continuous structure 102, the mounting plate 3 and the constraint horse plate 4. The temporary fixing components can be repeatedly used.

[0044] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application and not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that; the specific embodiments of the application can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A method for mounting transverse bulkhead sections on an ultra-large container ship, characterized in that, The transverse bulkhead section includes multiple transverse bulkhead section reinforcement structures arranged along the ship's beam direction. After installation, the transverse bulkhead section reinforcement structures are perpendicular to the double bottom. The installation method includes the following steps: S1. Align the bow or stern bulkhead of the rear transverse bulkhead assembly with the transverse ribs on the reverse side of the inner bottom plate of the double bottom, and confirm the sequence number of the transverse ribs to be aligned with the bow or stern bulkhead of the transverse bulkhead assembly. S2. A transverse continuous structure is temporarily fixed to the lower side of the transverse bulkhead section. The transverse continuous structure is vertically fixed to multiple transverse bulkhead section reinforcement structures. Multiple mounting plates are vertically fixed to the pre-placement position of the transverse bulkhead section reinforcement structure on the upper surface of the inner bottom plate. The upper side of the mounting plate is provided with a downward inclined surface facing the pre-placement position of the transverse bulkhead section. A vertical surface is provided at the lower end of the inclined surface. The horizontal distance between the vertical surface of the mounting plate and the rib surface of the transverse rib selected in S1 is equal to the wall thickness of the bow or stern bulkhead of the transverse bulkhead section. The height of the mounting plate is less than the distance between the transverse continuous structure and the lower end of the transverse bulkhead section. S3. Lift the transverse bulkhead section, guiding its lower end down along the inclined surface of the mounting plate installed in S2, and onto the inner bottom plate, aligning the bow or stern bulkhead of the transverse bulkhead section with the transverse ribs confirmed in S1; release the crane hook and move the lifting equipment away; before releasing the crane hook, symmetrically fix restraint plates to the bow and stern bulkheads of the transverse bulkhead section, and symmetrically constrain and weld them about the centerline of the hull at the contact points between the left and right ends of the transverse bulkhead section and the bilge steps. The restraint plates are rectangular, with the vertical side of the restraint plates welded to the reinforcing structure of the transverse bulkhead section and the horizontal side of the restraint plates welded to the inner bottom plate; S4. Weld the transverse bulkhead section, remove temporary fixing components, and complete the installation; The transverse continuous structure is an I-beam, the distance between the transverse continuous structure and the lower end of the transverse bulkhead section is 600mm, and the height of the mounting plate is less than 500mm. The mounting plate is in the shape of a right trapezoid, with the short side of the mounting plate facing the pre-placed position of the transverse bulkhead section, and the straight side of the mounting plate is fixedly connected to the inner bottom plate.

2. The method for mounting transverse bulkhead sections of ultra-large container ships according to claim 1, characterized in that, The mounting plate has a long side height of 300mm, a short side height of 150mm, and a thickness of 12-20mm.

3. The method for mounting transverse bulkhead sections of an ultra-large container ship according to claim 1, characterized in that, A mounting plate is provided on the centerline of the hull, and mounting plates are symmetrically arranged on the left and right sides of the centerline of the hull. The distance between the vertical surface of the mounting plate and the horizontal surface of the rib of the transverse rib selected by S1 is equal to 24mm.

4. The method for mounting transverse bulkhead sections of an ultra-large container ship according to claim 1, characterized in that, The length of the weld on the restraint plate is greater than or equal to 150mm, and the length of the weld in the restraint welding is greater than or equal to 500mm.

5. The method for mounting transverse bulkhead sections of an ultra-large container ship according to claim 1, characterized in that, Along the width of the ship, multiple restraint plates are symmetrically arranged on the inner bottom plate about the centerline of the hull.

6. The method for mounting transverse bulkhead sections of an ultra-large container ship according to claim 1, characterized in that, The temporary fixing components removed in step S4 include the transverse continuous structure, the mounting plate, and the restraint plate.

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