CN115285305A - Transformation method for transforming deck transport ship into large offset full-rotation crane ship - Google Patents

Transformation method for transforming deck transport ship into large offset full-rotation crane ship Download PDF

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Publication number
CN115285305A
CN115285305A CN202211072152.3A CN202211072152A CN115285305A CN 115285305 A CN115285305 A CN 115285305A CN 202211072152 A CN202211072152 A CN 202211072152A CN 115285305 A CN115285305 A CN 115285305A
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CN
China
Prior art keywords
ship
vessel
deck
crane
full
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Pending
Application number
CN202211072152.3A
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Chinese (zh)
Inventor
张二敏
贾旺杰
王永成
田彧
陈彬彬
谢家纯
邹康
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Shanghai Merchant Ship Design and Research Institute
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Shanghai Merchant Ship Design and Research Institute
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Application filed by Shanghai Merchant Ship Design and Research Institute filed Critical Shanghai Merchant Ship Design and Research Institute
Priority to CN202211072152.3A priority Critical patent/CN115285305A/en
Publication of CN115285305A publication Critical patent/CN115285305A/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 
    • B63B71/00—Designing vessels; Predicting their performance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/10—Arrangement of ship-based loading or unloading equipment for cargo or passengers of cranes
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

The invention discloses a transformation method for transforming a deck transport ship into a large-scale offset full-rotation crane ship, which comprises the following steps: cutting off a hull structure in front of a first watertight transverse bulkhead of the original ship; buoyancy tanks are added on the outer sides of the port and starboard of the original ship, and extend from the bow to the stern; and a full-rotation crane is arranged on the side of one side of the bow. The transformation method of the invention ensures that the crane ship transformed based on the deck transport ship obtains larger outboard hoisting distance and effectively controls the gravity center position of the whole ship.

Description

Transformation method for transforming deck transport ship into large offset full-rotation crane ship
Technical Field
The invention relates to the technical field of ships, in particular to a method for transforming a deck-based transport ship into a large offset full-rotation crane ship.
Background
With the rapid development of marine oil development, large-scale offshore engineering construction, coastal wind power equipment installation and marine disaster rescue industry, the demand of a large-scale full-rotation crane ship as a common engineering ship is rapidly increased. The full-rotation crane ship is provided with huge hoisting equipment, load adjusting equipment and a supporting structure. The suspension arm structure is overlong and overweight, and has strict requirements on structure and stability; the ballast water needs to be quickly and effectively allocated in the hoisting process; the ship body needs to locally strengthen the structure at a relevant position; the concentrated load is large during operation, and the requirement on the total longitudinal strength is high. These factors result in a large capital investment, a long construction period, and slow efficiency in building a full slewing crane vessel.
The deck transport ship mainly refers to an automatic cargo ship for transporting dry, miscellaneous and bulk cargo on a deck. The ship has a large and open cargo carrying deck, and the cargo carrying deck of the deck transport ship generally has no beam arch, so that the requirement of carrying cargo on the deck of the full-circle slewing crane ship can be met. The ship is generally provided with a deck chamber at the stern, and in order to meet the requirement of the speed, the ship is generally provided with a linear type at the bow.
If can be on the basis of deck transport ship, with less cost and shorter time with its repacking become the full gyration jack-up ship, not only can satisfy at present to the height of lifting, the lifting weight demand of gyration full gyration jack-up ship, also provide new thinking for the transformation of large-scale deck transport ship. Therefore, the method for converting the large deck transport ship into the rotary full-rotation crane ship has great practical significance and economic value.
The problems existing in the prior art are that: the crane ship transformed based on the deck carrier is difficult to realize the control of the gravity center position of the whole ship under a larger outboard hanging distance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for transforming a deck transport ship into a large-scale offset full-rotation crane ship.
The invention solves the technical problems through the following technical scheme:
a transformation method for transforming a deck transport ship into a large offset full-rotation crane ship comprises the following steps:
step 1, cutting off a hull structure in front of a first watertight transverse bulkhead of an original ship;
step 2, adding floating boxes on the outer sides of the port and starboard of the original ship, wherein the floating boxes extend from the bow to the stern;
and 3, arranging a full-circle slewing crane on the side of one side of the bow.
In the step 2, the buoyancy tank is of a cuboid structure and is attached to the hull shell. The top of the buoyancy tank is level with the main deck of the original ship, and the bottom of the buoyancy tank is level with the bottom of the original ship.
Preferably, in the step 3, the bottom of the full-circle slewing crane is arranged at the junction of the hull of the original ship and the buoyancy tank.
Preferably, in the step 3, the bottom of the full-circle slewing crane is arranged on the buoyancy tank.
Step 3 also includes: and arranging a shelf for supporting the boom of the full-circle crane at the middle rear part of the ship, wherein the shelf is positioned on the other side opposite to the position of the full-circle crane.
The reconstruction method also comprises the following steps: and an auxiliary cabin is arranged in the buoyancy tank on the other side opposite to the position of the full-circle slewing crane.
The reconstruction method also comprises the following steps: using a floating tank from the middle part to the rear part of the ship body as a water ballast tank; and a pump cabin for allocating ballast water in the buoyancy tank is arranged, and the pump cabin is arranged in an empty cabin at the rear part of the original ship or a cabin of the original ship.
The reconstruction method also comprises the following steps: arranging a helicopter platform at the stern of an original ship; the helicopter platform is respectively fixed on the stern of the original ship and the superstructure of the original ship.
The invention has the beneficial effects that: the transformation method of the invention ensures that the crane ship transformed based on the deck transport ship obtains larger outboard hoisting distance and effectively controls the gravity center position of the whole ship.
Drawings
Fig. 1 is a schematic structural view of a deck carrier before conversion.
Fig. 2 is a schematic side view of a ship after being rebuilt by the rebuilding method according to the preferred embodiment of the present invention.
FIG. 3 isbase:Sub>A schematic sectional view taken along line A-A in FIG. 2.
FIG. 4 is a schematic top view of a ship being rebuilt using the rebuild method of the preferred embodiment of the invention.
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
The original vessel, i.e. the deck carrier before the rebuild, is shown in fig. 1.
According to the transformation method for transforming the deck-based transport ship into the large offset full-rotation crane ship, the original ship is transformed into a structure as shown in fig. 2, 3 and 4.
A transformation method for transforming a deck transport ship into a large offset full-rotation crane ship comprises the following steps:
step 1, cutting off a hull structure in front of a first watertight transverse bulkhead 10 of an original ship;
in order to meet the requirement of reserve buoyancy, the requirement of arrangement of anchoring equipment of the modified crane ship and the arrangement requirement of the full-circle slewing crane, the bow of the original deck transport ship needs to be modified, and the original deck transport ship can be cut off from the part in front of the first watertight bulkhead of the bow and modified.
In order to meet the requirement of navigational speed, a deck transport ship (namely an original ship) before transformation needs to be provided with a sharp-thin bow line type, but the sharp-thin bow line type cannot meet the requirement of bow reserve buoyancy and anchoring equipment arrangement after transformation into a full-circle slewing crane ship. To meet the requirement of buoyancy reserve in the hoisting operation process, the full-circle slewing crane ship needs a large and fat line type. The original ship bow mooring equipment can not meet the anchoring requirement of the modified crane ship, the anchoring equipment needs to be updated, but the structure of the original ship bow is difficult to meet the requirement of the arrangement of the modified anchoring equipment. It is therefore necessary to modify the bow of the deck carrier.
And 2, adding floating boxes 20 on the outer sides of the port and starboard of the original ship, wherein the floating boxes extend from the bow to the stern. The buoyancy tank is of a cuboid structure and is attached to the hull shell. The top of the buoyancy tank is level with the main deck 11 of the original ship, and the bottom of the buoyancy tank is level with the bottom 12 of the original ship.
In order to meet the requirements of bow reserve buoyancy and obtaining larger outboard hoisting distance in the full-rotation operation process, an external buoyancy tank needs to be added on the original ship. In order to meet the requirement of a crane on the floating state of a crane ship in full-circle slewing crane operation, a buoyancy tank is required to be added on the outer part of the original ship line type to arrange a ballast water tank. The mooring device at the tail of the original ship cannot meet the requirement of anchoring and positioning of the ship after reconstruction, and the space at the tail of the original ship is not enough for arranging the tail mooring device, so that buoyancy tanks are required to be additionally arranged on two sides of the tail of the original ship to arrange anchoring equipment at the tail. It is therefore necessary to add pontoons from the bow to the stern.
And 3, arranging a full-circle slewing crane 30 on the side of one side of the bow.
The number of the positions of the full-circle slewing crane can be two.
In the first position, the bottom of the full-circle slewing crane is arranged at the junction of the hull of the original ship and the buoyancy tank.
And in the second position, the bottom of the full-rotation crane is arranged on the buoyancy tank.
On the basis of arranging the full-circle-turning crane, a shelf for supporting the boom of the full-circle-turning crane is also required to be arranged.
A shelf 31 for supporting the boom of the full slewing crane is provided in the midship rear part, the shelf being located on the other side opposite to the position of the full slewing crane.
In order to obtain a larger outboard suspension distance, the arm length of the full-rotation crane is required to be as long as possible, the full-rotation crane needs to be placed on the shelf in an idle state, the shelf is arranged on the same side of the full-rotation crane, so that the longer suspension arm of the crane is difficult to arrange in the idle state, and the control on the gravity center position of the whole ship is not favorable, therefore, the crane suspension arm shelf is arranged on the side, opposite to the crane position, of the middle rear part of the ship, of the crane, the crane with the longer arm length can be arranged in a limited space, and the gravity center position of the whole ship can be effectively controlled.
And on the basis of the steps, continuously reforming the original ship. The following designation of one of step 4, two of step 4, and three of step 4 is for descriptive convenience only and not as a sequential order.
And 4, arranging an auxiliary cabin in the buoyancy tank 21 on the other side opposite to the position of the full-circle slewing crane.
In order to conveniently supply power to anchoring equipment at the bow part of a crane ship, a crane and other equipment after transformation as far as possible, an auxiliary engine room is often required to be arranged at the bow part of the ship, the auxiliary engine room is arranged in an external floating box newly added to the bow part by utilizing the bow part of an original ship, but the construction difficulty is high, so that the auxiliary engine room is considered to be arranged in the external floating box, the auxiliary engine room arranged in the way is closer to the side, the weight of the crane can be effectively balanced, the construction difficulty is low, and the workload is small.
Step 4, using the floating tanks from the middle part to the rear part of the ship body as ballast water tanks; a pump room for allocating ballast water in the buoyancy tank is provided, the pump room being provided in the rear empty tank 22 of the original ship or in the cabin 23 of the original ship.
The buoyancy tanks added from the middle part to the tail part of the ship body are required to be used as water ballast tanks, and a part of the water ballast tanks are provided with anti-heeling systems to be used as anti-heeling water tanks.
In order to meet the requirement of a newly added ballast tank for transferring ballast water, a newly added pump tank is needed in the modified crane ship, and the pump tank is arranged in an empty cabin or a cabin at the rear part of an original ship, so that the requirement of the newly added ballast tank for transferring the ballast water can be met, and the weight of a bow crane can be balanced.
Step 4, arranging a helicopter platform 40 at the stern of the original ship; the heliplatform is secured to the stern 82 of the original vessel and to the superstructure 81 of the original vessel, respectively.
The helicopter platform is arranged by depending on the structure of the tail part and the superstructure of the original ship, so that the weight of the bow crane can be effectively balanced, and the space of an operation area is saved.
In order to meet the requirement of modifying the lifting capacity and outboard suspension distance of a ship, if a newly-built full-rotation crane ship is adopted, structural design and overall arrangement are usually considered in primary design, however, the modified full-rotation crane ship needs to be based on the structural foundation of a deck transport ship, and in order to reduce the modification difficulty, the structure of an original ship needs to be modified as little as possible.
The transformation method can effectively control the gravity center position of the whole ship and obtain a larger outboard hanging distance.
The transformation method of the invention ensures that the crane ship transformed based on the deck transport ship obtains larger outboard hoisting distance and effectively controls the gravity center position of the whole ship.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (10)

1. A transformation method for transforming a deck transport ship into a large offset full-rotation crane ship is characterized by comprising the following steps:
step 1, cutting off a hull structure in front of a first watertight transverse bulkhead of an original ship;
step 2, adding floating boxes on the outer sides of the port and starboard of the original ship, wherein the floating boxes extend from the bow to the stern;
and 3, arranging a full-circle slewing crane on the side of one side of the bow.
2. The method for transforming a deck-based transport ship into a large offset full-slewing crane ship as claimed in claim 1, wherein in the step 2, the buoyancy tank is of a cuboid structure and is attached to the hull of the ship.
3. The method of converting a deck-based transport vessel into a large offset full slewing crane vessel of claim 2, wherein the top of the pontoon is level with the main deck of the original vessel and the bottom of the pontoon is level with the bottom of the original vessel.
4. The method for converting a deck-based transport ship into a large offset fully slewing crane ship as claimed in claim 1, wherein in step 3, the bottom of the fully slewing crane is located at the intersection of the hull and the buoyancy tank of the original ship.
5. The method for converting a deck-based transport vessel into a large offset fully slewing crane vessel as claimed in claim 1, wherein in step 3, the bottom of the fully slewing crane is mounted on a pontoon.
6. The method for converting a deck-based transport vessel into a large offset fully slewing crane vessel as claimed in claim 1, wherein step 3 further comprises: and arranging a shelf for supporting the boom of the full-circle crane at the middle rear part of the ship, wherein the shelf is positioned on the other side opposite to the position of the full-circle crane.
7. The method for converting a deck-based transport vessel into a large offset fully slewing crane vessel as claimed in claim 1, further comprising the steps of: and an auxiliary cabin is arranged in the buoyancy tank on the other side opposite to the position of the full-circle slewing crane.
8. The method for converting a deck-based transport vessel into a large offset fully slewing crane vessel as claimed in claim 1, further comprising the steps of: the middle to rear buoyancy tanks of the hull are used as ballast tanks.
9. The method for converting a deck-based transport vessel into a large offset full-slewing crane vessel as claimed in claim 8, wherein a pump room for adjusting the ballast water in the buoyancy tank is provided, and the pump room is provided in a rear empty room of the original vessel or in a cabin of the original vessel.
10. The method for converting a deck-based transport vessel into a large offset fully slewing crane vessel as claimed in claim 1, further comprising the steps of: arranging a helicopter platform at the stern of an original ship; the helicopter platform is respectively fixed on the stern of the original ship and the superstructure of the original ship.
CN202211072152.3A 2022-09-02 2022-09-02 Transformation method for transforming deck transport ship into large offset full-rotation crane ship Pending CN115285305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211072152.3A CN115285305A (en) 2022-09-02 2022-09-02 Transformation method for transforming deck transport ship into large offset full-rotation crane ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211072152.3A CN115285305A (en) 2022-09-02 2022-09-02 Transformation method for transforming deck transport ship into large offset full-rotation crane ship

Publications (1)

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CN115285305A true CN115285305A (en) 2022-11-04

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CN202211072152.3A Pending CN115285305A (en) 2022-09-02 2022-09-02 Transformation method for transforming deck transport ship into large offset full-rotation crane ship

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