CN112478084A

CN112478084A - Method for carrying and hoisting chimney block of large container ship

Info

Publication number: CN112478084A
Application number: CN202011186030.8A
Authority: CN
Inventors: 丁岩; 龙映玲; 王浩良; 颜高锋
Original assignee: Shanghai Jiangnan Changxing Shipbuilding Co Ltd
Current assignee: Shanghai Jiangnan Changxing Shipbuilding Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-03-12

Abstract

The invention discloses a method for carrying and hoisting a chimney block of a large container ship, which comprises the following steps: step 1, respectively welding and designing triangular plates with structural hoisting holes at the joints of the port and starboard outer plates and the platform plates of the chimney block section; step 2, connecting a first lifting hook and a second lifting hook of the gantry crane to the lifting row; step 3, connecting the lifting hooks of the lifting row with the triangular plate of the structural lifting hole of the port side, and connecting the third lifting hook of the gantry crane with the triangular plate of the structural lifting hole of the starboard side; and 4, starting the gantry crane, horizontally hoisting the chimney block to a dock, and folding and carrying the chimney block and the lower cabin block.

Description

Method for carrying and hoisting chimney block of large container ship

Technical Field

The invention belongs to the technical field of ship construction, and particularly relates to a method for carrying and hoisting a chimney block of a large container ship.

Background

Along with the container ship size that the company accepted is bigger and bigger, and the environmental protection requirement is higher and higher, and a lot of container ships all are provided with the washing tower equipment, lead to cabin canopy and chimney structural style to change like this, in order to satisfy the lift-launch hoist and mount, when segmentation total section was divided, can only be with cabin canopy and chimney total section separately, hoist and mount respectively during the lift-launch, because the chimney segmentation is the box structure, the plate is thin, and platform inner structure is more weak, and the lift-launch rings can only set up on the planking leg usually.

When the lifting ring is arranged on the surrounding wall, the carrying and hoisting are not greatly influenced, but the position of the total section of the chimney is as high as 60 meters, after the hoisting is finished, a gantry crane at the suspended outer plate is difficult to unhook, and similarly, the lifting ring is dismantled and the polishing repair paint is also difficult to remove, a hydraulic vehicle is hoisted to a main deck hatch cover plate with the height of about 30 meters through the gantry crane under the common condition, and then the hydraulic vehicle is lifted to the height of 60 meters through a hydraulic vehicle cantilever to dismantle the lifting ring and polish the repair paint, so that the construction is difficult and the period is long.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a method for carrying and hoisting a chimney block of a large container ship.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for carrying and hoisting a large container ship chimney block section comprises the following steps: step 1, respectively welding and designing triangular plates with structural hoisting holes at the joints of the port and starboard outer plates and the platform plates of the chimney block section; step 2, connecting a first lifting hook and a second lifting hook of the gantry crane to the lifting row; step 3, connecting the lifting hooks of the lifting row with the triangular plate of the structural lifting hole of the port side, and connecting the third lifting hook of the gantry crane with the triangular plate of the structural lifting hole of the starboard side; and 4, starting the gantry crane, horizontally hoisting the chimney block to a dock, and folding and carrying the chimney block and the lower cabin block.

Preferably, the chimney block is of a box structure and is normally carried, and the thicknesses of the outer plate and the platform plate are both 9 mm.

Preferably, the diameter of the opening on the triangular plate with the structural hoisting opening is 80mm, and the thickness of the opening is 20 mm.

Preferably, the triangular plate with the structural hoisting hole is provided with a circular compound plate, and the compound plate is 16mm in thickness and 300mm in diameter.

Preferably, the design has the triangular plate of structural hoist and mount trompil, opens 45 bevels with the landing slab junction, leaves 6 mm.

Preferably, the compound plate is provided with a circular hole which is concentric with the opening and has the same diameter as the opening, and a 45-degree groove with the thickness of 8mm is formed at the lap joint of the compound plate and a triangular plate provided with a structural hoisting opening.

Preferably, the compound board border is apart from the surface 30mm of landing slab, compound board border is apart from the design has the set-square of structural hoist and mount trompil, hypotenuse 30 mm.

Preferably, the design has a set square with structural hoisting holes, eight blocks each.

Compared with the prior art, the invention has the beneficial effects that: through the design of triangle plate structural nature hoist and mount trompil, can provide better safer unhook environment to the set-square need not to demolish. The problems that the conventional hoisting method is unhooked and the hoisting ring is dismantled, polished and repaired, and paint is difficult to repair are solved.

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 schematic view of a stack section.

FIG. 2 is a schematic sectional view of the position of the triangular plate.

Figure 3 is a schematic view of a structural hanger apertured triangular plate.

FIG. 4 is a schematic view of an original triangle and rib plates of a ship body, wherein a is the original triangle and b is the original rib plate.

Fig. 5 is a schematic view of the welded assembly of the triangle and the flat plate.

FIG. 6 is a schematic view of the assembly of the doubler plate and the triangle.

FIG. 7 is a schematic view of a hanger row and hook arrangement

1 is the chimney total section, 2 is the planking, 3 landing slabs, 4 for the design of port has structural hoist and mount trompil set-square, 5 for the design of starboard has structural hoist and mount trompil set-square, 6 is original hull structure set-square, 7 is original hull structure gusset, 8 is first lifting hook, 9 is the second lifting hook, 10 is the hanging row, 11 is the hanging row lifting hook, 12 is the third lifting hook, 13 is the doubler.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 7, the embodiment provides a method for carrying and hoisting a chimney block of a large container ship, which specifically includes the following steps: step 1: replacing the original triangular plate structure and the rib plate of the ship body by triangular plates with structural hoisting holes at the joints of the port and starboard outer plates and the platform plates of the chimney block section respectively; step 2: connecting a first lifting hook and a second lifting hook of the gantry crane to a lifting row; and step 3: connecting the lifting hooks of the lifting rows with the triangular plate with the port structural lifting hole, and connecting the third lifting hook of the gantry crane with the triangular plate with the starboard structural lifting hole; and 4, step 4: and starting the gantry crane, horizontally hoisting the chimney block to a dock, and folding and carrying the chimney block and the lower cabin block. The width of first lifting hook and second lifting hook is greater than the width of chimney total section, therefore the lug connection is difficult to realize, solves this problem through the hanging row to the lifting hook of hanging row is more stable on the same line with the third lifting hook.

The large container ship chimney block is of a box body structure, is normally carried, and has the outer plate and platform plate with the thickness of 9mm, the inner structure is weak, and the platform plate cannot be provided with lifting rings.

The diameter of the opening of the triangular plate with the structural hoisting opening is 80mm, the thickness of the triangular plate is 20mm, and the material and the overall dimension are the same as those of the original triangular plate structure of the ship body except the thickness. The thicker set square is adopted, the strength is better, and the original rib plate is not needed.

The design has a triangular plate with structural hoisting holes, a circular compound plate is arranged, the thickness of the compound plate is 16mm, and the diameter of the compound plate is 300 mm. The stress at the lifting hook is maximum, and the required strength structure is realized through the compound plate.

The joint of the triangular plate and the platform plate, which is provided with structural hoisting holes, is provided with a 45-degree groove and 6mm of reserved roots. As shown in fig. 5, the left root means the length of the triangle panel left after the groove width on both sides is removed. If the width of the triangular plate is 20mm, the root is left 6mm, and the grooves on the two sides are the same, the width of each groove is 7 mm.

The round compound plate is provided with a round hole which is concentric with the triangular plate and has the same diameter as the triangular plate, and a 45-degree groove with the length of 8mm is formed in the lapping position of the round compound plate and the triangular plate in the thickness direction.

The vertical distance from the lower edge of the circular compound plate to the plate surface of the platform is 30mm, and the normal vertical distance from the bevel edge of the triangular plate is 30 mm.

4 blocks of left and right sides and 5 blocks of rib plates of left and right sides of the original triangular plate structure of the ship body are symmetrically and alternately arranged at the connecting part of the outer plate and the platform plate by taking a middle rib plate as a center in the fore-aft direction, wherein the thickness of the plate is 10 mm.

Eight triangular plates with structural hoisting holes are designed on the port and the starboard, and 4 hull triangular plates and 4 rib plates are symmetrically arranged in the head-tail direction.

Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.

Claims

1. A method for carrying and hoisting a large container ship chimney block section is characterized by comprising the following steps:

step 1, respectively welding and designing structural triangular plates (4) and (5) with hoisting holes at the joints of a port outer plate (2) and a starboard outer plate (3) of a chimney block section (1);

step 2, connecting a first lifting hook (8) and a second lifting hook (9) of the gantry crane to a lifting row (10);

step 3, connecting the lifting hooks (11) of the lifting row (10) with the triangular plate (4) with the structural lifting hole on the port side, and connecting the third lifting hook (12) of the gantry crane with the triangular plate (5) with the structural lifting hole on the starboard side;

and 4, starting the gantry crane, horizontally hoisting the chimney block (1) to a dock, and folding and carrying the chimney block and the lower cabin block.

2. The method for carrying and hoisting the chimney block of the large container ship according to claim 1, wherein the chimney block (1) is of a box structure and is normally carried, and the thicknesses of the outer plate (2) and the platform plate (3) are both 9 mm.

3. The method for carrying and hoisting the chimney block of the large container ship according to claim 2, wherein the diameter of the opening on the triangular plates (4) and (5) with the structural hoisting opening is 80mm, and the thickness of the opening is 20 mm.

4. The method for carrying and hoisting the chimney block of the large container ship according to claim 3, wherein circular doublers (13) are mounted on the triangular plates (4) and (5) with structural hoisting holes, and the thickness of the doubler is 16mm, and the diameter of the doubler is 300 mm.

5. The method for carrying and hoisting the chimney block of the large container ship according to claim 4, wherein a 45-degree groove is formed at the joint of the triangular plates (4) and (5) with structural hoisting holes and the platform plate (3), and the groove is reserved for 6 mm.

6. The method for carrying and hoisting the chimney block of the large container ship according to claim 5, wherein the compound plate (13) is provided with a circular hole concentric with the opening and having the same diameter, and a 45-degree groove with the thickness of 8mm is formed at the lap joint of the compound plate (13) and the triangular plates (4) and (5) provided with structural hoisting openings.

7. The method for carrying and hoisting the chimney block of the large container ship according to claim 6, wherein the edge of the compound plate (13) is 30mm away from the surface of the platform plate (3), and the edge of the compound plate (13) is 30mm away from the bevel edge of the triangular plate (4) and the triangular plate (5) designed with the structural hoisting holes.

8. The method for carrying and hoisting the chimney block of the large container ship according to claim 7, wherein the set square (4) and the set square (5) with structural hoisting holes are eight in number.