Half-ship remote transfer method

Abstract

The invention relates to the technical field of ship construction, and discloses a semi-ship remote transfer method, which comprises the following steps: firstly, blocking a semi-ship and then floating, then arranging a steel bracket on a semi-submersible barge in advance, then towing the semi-ship to the semi-submersible barge, then floating the semi-submersible barge and supporting the semi-ship and a seat pier through the steel bracket, and finally transferring the semi-ship to the semi-submersible barge. Then the semi-submersible barge carries the semi-ship to reach the wharf of the horizontal slipway to prepare for lightering, then the ship moving trolley enters the semi-submersible barge and transfers the semi-ship out of the semi-submersible barge, and finally the semi-ship is transferred and piled on a target site of the horizontal slipway; according to the method, the half ship is transferred to the horizontal slipway from the dock, in the building process of the ship, the half ship can be firstly built in the dock, and then the half ship is transferred to the horizontal slipway to be continuously built into the whole ship, so that the field utilization rate of the dock and the horizontal slipway is increased, and the productivity of a shipyard is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, in particular to a method for transferring a half-ship to a different location. Background Art

[0002] Docks are important shipbuilding resources for shipyards. Docks are still the most common construction sites for assembling complete ships. With the development of the ability to transfer large sections of ships, in addition to docks, flat-land shipbuilding (i.e., horizontal slipway shipbuilding) has also emerged. Large and advanced shipyards now have not only docks but also horizontal slipways. If a shipyard dock receives a large number of ships and a variety of ship types, using only the dock to build one ship will inevitably lead to some unused space in the dock, and using only the horizontal slipway to build one ship will also inevitably lead to some unused space in the horizontal slipway. In order to effectively utilize the unused space of the dock and the horizontal slipway, a method of transferring half a ship from the dock to the horizontal slipway is needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for half-ship transshipment which can improve the site utilization rate of the dock and the horizontal slipway and enhance the production capacity of the shipyard.

[0004] In order to solve the above technical problems, the present invention provides a half-ship inter-location transshipment method, comprising the following steps:

[0005] S1: Block the half ship in the dock, then float it and tow it to the designated dock to wait;

[0006] S2: Arrange multiple steel supports on the semi-submersible barge and tow the semi-submersible barge to the sinking pit to wait;

[0007] S3: towing the half-ship to the semi-submersible barge, and then floating the semi-submersible barge to lift the half-ship so that the half-ship is seated on the steel support;

[0008] S4: The semi-submersible barge carries half of the ship to the horizontal slipway pier and berths;

[0009] S5: The ship transfer trolley enters the semi-submersible barge and lifts up the steel support and the semi-submersible barge together;

[0010] S6: The ship moving trolley moves the steel support and the half ship out of the semi-submersible barge;

[0011] S7: After the ship moving trolley moves the steel support and the half-ship to the designated target site, the ship moving trolley lowers the steel support and the half-ship together so that the steel support is placed on the target site.

[0012] As a preferred solution of the present invention, in S1, a distance beam is provided in the hatch of the half ship in the transverse direction, and a plurality of the distance beams are provided and are arranged at intervals in the longitudinal direction.

[0013] As a preferred solution of the present invention, in S2, the semi-submersible barge is provided with rails arranged longitudinally, and the steel bracket is arranged above the rails. In S4, the ship moving trolley moves along the rails to the bottom of the steel bracket.

[0014] As a preferred embodiment of the present invention, in S2, a plurality of wedge seats are provided on the semi-submersible barge, first ear plates are provided on both sides of the wedge seats, the steel brackets are provided on the wedge seats in a one-to-one correspondence, the top of the steel brackets are covered with anti-slip pads, second ear plates are provided on both sides of the top of the steel brackets, and the first ear plate and the second ear plate are connected by a rigging screw buckle.

[0015] As a preferred solution of the present invention, a plurality of cement piers are provided on the semi-submersible barge and the target site, and steel piers are provided on the cement piers. In S3 and S7, the semi-submersible barge is seated on the steel supports and the steel piers.

[0016] As a preferred embodiment of the present invention, in S4, the bow of the semi-submersible barge is anchored, and the tower cable and deck stern cable of the semi-submersible barge are respectively brought to the mooring piles of the horizontal slipway pier. There are two winches for adjusting the lateral position of the stern of the semi-submersible barge and two winches for longitudinally tightening the stern of the semi-submersible barge on the horizontal slipway pier. The winches and the winches are respectively connected to the lateral sides of the stern of the semi-submersible barge.

[0017] As a preferred solution of the present invention, in S5, a bridge is set between the semi-submersible barge and the horizontal slipway pier, and the ship moving trolley enters the semi-submersible barge through the bridge. In S6, after each ship moving trolley passes through the bridge, the position of the bridge is monitored and adjusted in real time to prevent the bridge from being misaligned by more than 5 mm.

[0018] As a preferred solution of the present invention, in S6, the center of gravity of the half-ship is used as the dividing point, and the half-ship is divided into four half-ship components with equal moments relative to the center of gravity along the longitudinal and transverse directions respectively. The multiple ship-moving trolleys located below each of the half-ship components are connected in series to form a ship-moving trolley group, and the center of the lifting force of the ship-moving trolley group and the center of gravity of the corresponding half-ship component are on the same vertical line.

[0019] As a preferred embodiment of the present invention, the maximum load-bearing capacity of each group of ship-moving trolleys is 1.35 times the weight of each half-ship component.

[0020] As a preferred solution of the present invention, in S7, reference rib position lines are respectively marked on the outer plate of the half ship and on the ground of the slipway. When the half ship is moved to align the two reference rib position lines, the ship moving trolley starts to lower the steel support and the half ship.

[0021] The embodiment of the present invention provides a method for transferring half a ship to a different location. Compared with the prior art, the method has the following advantages: the method first seals the half ship and then floats it, then arranges steel supports on the semi-submersible barge in advance, and then tows the half ship to the semi-submersible barge, then floats the semi-submersible barge and lifts the half ship and the pier through the steel supports, then the semi-submersible barge carries the half ship to the shore to the horizontal slipway wharf to prepare for transshipment, then the ship transfer trolley enters the semi-submersible barge and transfers the half ship out of the semi-submersible barge, and finally the half ship is operated and pierced on the target site of the horizontal slipway; the method realizes the operation of the half ship from the dock to the horizontal slipway. During the construction of the ship, the half ship can be built in the dock first, and then the method is used to operate the half ship to the horizontal slipway to continue to build it into a whole ship, thereby promoting the diversification of shipbuilding assembly modes and maximizing the resource utilization of spare sites in different locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a partial structural diagram of the half-ship plugging treatment of the present invention;

[0023] Figure 2 This is a structural schematic diagram of a half-ship hatch provided with a distance-keeping beam according to the present invention;

[0024] Figure 3 This is a structural schematic diagram of the semi-submersible barge of the present invention diving;

[0025] Figure 4 This is a schematic diagram of the arrangement structure of the steel support of the present invention on a semi-submersible barge;

[0026] Figure 5 This is a schematic diagram of the structure of the semi-submersible barge with half of the barge floating on it according to the present invention;

[0027] Figure 6 This is a schematic structural diagram of a half-ship of the present invention resting on a steel support;

[0028] Figure 7 It is a structural schematic diagram of the steel support of the present invention;

[0029] Figure 8 is a top view of the steel support of the present invention;

[0030] Figure 9 It is a schematic diagram of the exploded structure of the cement pier and the steel pier of the present invention;

[0031] Figure 10 This is a structural schematic diagram of the semi-submersible barge of the present invention berthing at a horizontal slipway pier;

[0032] Figure 11 It is a structural schematic diagram of the bridge of the present invention;

[0033] Figure 12 This is a schematic structural diagram of the boat moving trolley of the present invention operating half of the boat;

[0034] In the figure, there is a half ship 1; a distance-maintaining beam 11; a half ship component 12; a semi-submersible barge 2; a track 21; a wedge seat 22; a rigging turnbuckle 23; a steel support 3; a ship-moving trolley 4; a ship-moving trolley assembly 41; a concrete pier 5; a steel pier 51; a horizontal slipway pier 6; a winch 61; a hoist 62; and a bridge 63. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the present invention, half a ship refers to a hull that has not been fully built, but has been built to have anti-sinking and reserve buoyancy and can be floated.

[0037] like Figure 1-12 As shown, a half-ship inter-location transshipment method according to a preferred embodiment of the present invention comprises the following steps:

[0038] S1: The half ship 1 in the dock is sealed. Specifically, the ballast adjustment and sealing are carried out according to the floating calculation book, so as to achieve the sealing treatment within the draft height of the half ship 1 so that the half ship 1 meets the floating conditions, such as Figure 1 As shown, the holes for epoxy resin injection on the stern end surface of the half-ship 1 are sealed with sealing plates. The four corners of the sealing plates are spot welded with a thickness of 30 to 50 mm, with a weld foot of ≥ 7 mm. The entire sealing plate is sealed with Cassi glue, and a tightness test is performed 24 hours later. Then, water is released into the dock. After the water levels inside and outside are equal, the dock door is opened. After the half-ship 1 is fully floated, it is towed to the designated dock and wait.

[0039] S2: Arrange multiple steel supports 3 on the semi-submersible barge 2 as the bearing base for the semi-submersible barge 1 to be transferred to the ship. Through scientific calculation, the arrangement of the steel supports 3 on the semi-submersible barge 2 is completed in advance. Then the semi-submersible barge 2 is towed to the sinking pit and wait. The sinking depth of the semi-submersible barge 2 is calculated based on the draft of the semi-submersible barge 1, the height of the steel supports 3, the deck height of the semi-submersible barge 2 and the reserved safety distance. Figure 3 As shown, the semi-submersible barge 2 dives according to the diving depth and is anchored;

[0040] S3: Tow the half-ship 1 onto the semi-submersible barge 2. Specifically, the number of tugboats is selected according to the weight of the half-ship 1. The tugboat tows the half-ship 1 onto the top of the semi-submersible barge 2. Then the semi-submersible barge 2 lifts the half-ship 1 so that the half-ship 1 rests on the steel bracket 3. The number and arrangement of the steel bracket 3 are scientifically calculated and reasonably arranged to ensure that the half-ship 1 rests stably on the steel bracket 3. It is understandable that, according to the shape of the bottom of the half-ship 1, sleepers can be set between the steel bracket 3 and the bottom of the half-ship 1 and tightened, as shown in FIG. Figure 6 As shown, to ensure that the half-ship 1 is stably seated on the steel support 3; during the slow floating process of the semi-submersible barge 2, cables are stretched between the semi-submersible barge 2 and the half-ship 1. The bow and stern cables of the half-ship 1 are stretched at 45 degrees, and the middle cable is stretched at 90 degrees, to ensure that the tension of the bow and stern cables is almost the same. The middle cable is mainly used to adjust the centerline positioning of the half-ship 1, so as to ensure the accurate and stable position of the half-ship 1 when it touches the pier. The schematic diagram of the half-ship 1 with cables is as shown in Figure 5 As shown;

[0041] S4: The semi-submersible barge 2 carries the half ship 1 to the horizontal berth 6 and berths. The semi-submersible barge 2 carries the half ship 1 to the horizontal berth, drops anchor and berths to the horizontal berth 6 to prepare for the transfer.

[0042] S5: The ship moving trolley 4 enters the semi-submersible barge 2 and lifts the steel support 3 and the half-barge 1 together. Multiple ship moving trolleys 4 enter the semi-submersible barge 2 from the horizontal slipway pier 6 and move to the bottom of the steel support 3. The number and arrangement of the steel supports 3 are reasonably calculated and set. Therefore, multiple ship moving trolleys 4 lift multiple steel supports 3, and thus the half-barge 1 can be lifted smoothly.

[0043] S6: The ship moving trolley 4 moves the steel bracket 3 and the half-ship 1 out of the semi-submersible barge 2. The multiple ship moving trolleys 4 move the multiple steel brackets 3 and the half-ship 1 from the semi-submersible barge 2 to the horizontal slipway pier 6, that is, the half-ship 1 is moved out of the semi-submersible barge 2;

[0044] S7: After the ship moving trolley 4 moves the steel support 3 and the half ship 1 to the designated target site of the horizontal slipway, the ship moving trolley 4 lowers the steel support 3 and the half ship 1 together, so that the steel support 3 is placed on the target site. At this time, the ship moving trolley 4 no longer supports the steel support 3 and the half ship 1. The half ship 1 and the steel support 3 are stably placed on the target site of the horizontal slipway, realizing the movement of the half ship 1 from the dock to the horizontal slipway.

[0045] The present invention first seals the half-ship 1 and then floats it, then arranges the steel support 3 on the semi-submersible barge 2 in advance, then tows the half-ship 1 to the semi-submersible barge 2, then floats the semi-submersible barge 2 and lifts the half-ship 1 and the pier through the steel support 3, then the semi-submersible barge 2 carries the half-ship 1 to the shore to the horizontal slipway pier 6 to prepare for transshipment, then the ship transfer trolley 4 enters the semi-submersible barge 2 and transfers the half-ship 1 out of the semi-submersible barge 2, and finally operates the half-ship 1 and piers on the target site of the horizontal slipway; the present invention realizes the operation of the half-ship 1 from the dock to the horizontal slipway. During the construction of the ship, the half-ship 1 can be built in the dock first, and then the half-ship 1 can be operated to the horizontal slipway by this method to continue to be built into a whole ship, thereby promoting the diversification of shipbuilding assembly modes and maximizing the resource utilization of vacant sites in other places.

[0046] Because it is not a whole ship, in order to ensure the stability of the floating structure of the half-ship 1, it is advisable to reinforce the position of the large opening of the half-ship 1. The cargo hold of this embodiment is the large opening of the half-ship 1, so the distance reinforcement is carried out in the middle of the hatch. The distance measures mainly include setting reinforcement or tooling (the strength of reinforcement or tooling needs to be calculated). For example, in S1, a distance beam 11 is set in the horizontal direction at the hatch of the half-ship 1. There are multiple distance beams 11 and they are arranged at intervals in the longitudinal direction, such as Figure 2 As shown, the arrangement of the distance beam 11 can ensure the structural stability of the hatch of the half ship 1.

[0047] For example, in S2, the semi-submersible barge 2 is provided with a rail 21 arranged longitudinally, and the steel support 3 is provided above the rail 21. In S4, the ship moving trolley 4 moves along the rail 21 to the bottom of the steel support 3. The ship moving trolley 4 moves along the rail 21, which can ensure that the ship moving trolley 4 moves longitudinally to prevent deviation, so as to ensure that the ship moving trolley 4 can accurately reach the bottom of the steel support 3, and can also prevent the subsequent ship moving trolley 4 from deviating when moving the semi-submersible barge 1 out of the semi-submersible barge 2. It can be understood that the number and position of the rails 21 are set accordingly according to the number and position of the steel support 3, and the horizontal slipway is provided with a slipway track aligned with the rail 21.

[0048] For example, in S2, as Figure 7 As shown, the semi-submersible barge 2 is provided with a plurality of wedge seats 22, and a first ear plate is provided on both sides of the wedge seat 22. The steel bracket 3 is arranged on the wedge seat 22 in a one-to-one correspondence. The wedge increases the friction between the steel bracket 3 and the semi-submersible barge 2. The top of the steel bracket 3 is covered with an anti-skid pad (such as black rubber). The anti-skid pad can increase the friction between the steel bracket 3 and the half-ship 1. In order to protect the outer plate paint of the half-ship 1, a film can be laid on the anti-skid surface. A second ear plate is provided on both sides of the top of the steel bracket 3. The first ear plate and the second ear plate are connected by a rigging spiral buckle 23. The steel bracket 3 is connected to the semi-submersible barge 2 by the rigging spiral buckle 23, which reinforces the steel bracket 3 and can prevent the movement of the steel bracket 3 due to factors such as water flow force and friction force when the half-ship 1 touches the pier.

[0049] For example, a plurality of cement piers 5 are provided on the semi-submersible barge 2 and the target site, and a steel pier 51 is provided on the cement pier 5. Figure 9 As shown, it should be noted that the steel pier 51 is a prior art and its structure will not be described in detail here. In S3 and S7, the half-ship 1 is seated on the steel support 3 and the steel pier 51. It can be understood that the number and position of the steel piers 51 are also arranged after reasonable calculation. When the half-ship 1 is located in the target area of ​​the semi-submersible barge 2 or the horizontal slipway, the steel pier 51 and the steel support 3 together support the half-ship 1. The steel pier plays an auxiliary supporting role to ensure that the half-ship 1 can be firmly supported. It can be understood that in order to better support the half-ship 1, a flat wooden seat is provided on the steel pier 51, and the flat wooden seat is covered with rubber, and the black rubber is covered with a film.

[0050] For example, in S4, as Figure 10 As shown, the bow of the semi-submersible barge 2 is anchored, and the tower cable and deck stern cable of the semi-submersible barge 2 are respectively brought to the mooring piles of the horizontal slipway pier 6. Generally, two anchors are dropped from the bow of the semi-submersible barge 2, and the bow tower of the semi-submersible barge 2 is brought to the pier mooring pile with a high-strength cable as a mooring cable for aligning the center line of the bow rail 21, and the stern cable on the deck of the semi-submersible barge 2 is brought to the pier mooring pile for aligning the center line of the stern rail 21. There are two winches 61 for adjusting the lateral position of the stern of the semi-submersible barge 2 (for lateral rail alignment) and two winches 62 for longitudinally tightening the stern of the semi-submersible barge 2 on the horizontal slipway pier 6. The winch 61 and the winch 62 are respectively connected to the lateral sides of the stern of the semi-submersible barge 2.

[0051] For example, in S5, a bridge 63 is provided between the semi-submersible barge 2 and the horizontal slipway pier 6, as shown in FIG. Figure 11 As shown, the ship moving trolley 4 enters the semi-submersible barge 2 through the bridge 63. It can be understood that the bridge 63 is provided with a transfer track that is aligned with the slipway track and the rail 21 on the horizontal slipway. In S6, each time a ship moving trolley 4 passes through the bridge 63, the position of the bridge 63 is monitored and adjusted in real time to prevent the bridge 63 from being dislocated by more than 5 mm. Since the bridge 63 will have different degrees of dislocation after each ship moving trolley 4 is transferred, two people are arranged to monitor and adjust it in real time (using a pry bar) for each bridge 63 that needs to be crossed to avoid the bridge 63 from being dislocated beyond the allowable range (5 mm).

[0052] For example, in S6, the center of gravity of the half-ship 1 is used as a dividing point, and the half-ship 1 is divided into four half-ship components 12 with equal moments relative to the center of gravity along the longitudinal and transverse directions, such as Figure 12As shown, multiple ship moving trolleys 4 located below each half-ship component 12 are connected in series to form 4 groups of ship moving trolleys (all the ship moving trolleys 4 in each group are connected in series with oil pipes), and the center of the lifting force of the ship moving trolley group 4 is on the same vertical line as the center of gravity of its corresponding half-ship component 12, so that the ship moving trolley 4 can smoothly operate the half-ship 1.

[0053] During the transfer process, the semi-submersible barge 2 is unstable and the half-ship 1 will shake slightly. Therefore, for example, the maximum load-bearing capacity of each group of ship-moving trolleys 4 is 1.35 times the weight of each half-ship component 12 to ensure that the ship-moving trolley 4 can stably support the half-ship 1.

[0054] For example, in S7, reference rib position lines are surveyed on the outer plate of the half-ship 1 and on the ground of the slipway. When the half-ship 1 is moved to align the two reference rib position lines (a plumb bob can be hung on the reference rib position lines of the outer plate of the half-ship 1 to observe whether the two reference rib position lines are aligned), the ship moving trolley 4 starts to lower the steel support 3 and the half-ship 1 to ensure that the half-ship 1 is accurately set on the target area of ​​the horizontal slipway.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for half-ship transshipment, characterized by: The following steps are involved: S1: Block the half ship in the dock, then float it and tow it to the designated dock to wait; S2: Arrange multiple steel supports on the semi-submersible barge and tow the semi-submersible barge to the sinking pit to wait; S3: towing the half-ship to the semi-submersible barge, and then floating the semi-submersible barge to lift the half-ship so that the half-ship is seated on the steel support; S4: The semi-submersible barge carries half of the ship to the horizontal slipway pier and berths; S5: The ship transfer trolley enters the semi-submersible barge and lifts up the steel support and the semi-submersible barge together; S6: The ship moving trolley moves the steel support and the half ship out of the semi-submersible barge; S7: After the ship moving trolley moves the steel support and the half-ship to the designated target site, the ship moving trolley lowers the steel support and the half-ship together so that the steel support is placed on the target site.

2. The method for half-ship inter-location transfer according to claim 1, characterized in that: In S1, a distance beam is provided at the hatch of the half ship in the transverse direction, and a plurality of the distance beams are provided and arranged at intervals in the longitudinal direction.

3. The method for half-ship transshipment according to claim 1, characterized in that: In S2, the semi-submersible barge is provided with rails arranged in the longitudinal direction, and the steel bracket is arranged above the rails. In S4, the ship moving trolley moves along the rails to the bottom of the steel bracket.

4. The method for half-ship transshipment according to claim 1, characterized in that: In S2, the semi-submersible barge is provided with a plurality of wedge seats, a first ear plate is provided on both sides of the wedge seat, the steel bracket is provided on the wedge seat in a one-to-one correspondence, the top of the steel bracket is covered with an anti-slip pad, a second ear plate is provided on both sides of the top of the steel bracket, and the first ear plate and the second ear plate are connected by a rigging screw buckle.

5. The method for half-ship inter-location transfer according to claim 1, characterized in that: A plurality of cement piers are provided on the semi-submersible barge and the target site, and steel piers are provided on the cement piers. In S3 and S7, the semi-submersible barge is seated on the steel supports and the steel piers.

6. The method for half-ship inter-location transshipment according to claim 1, characterized in that: In S4, the bow of the semi-submersible barge is anchored, and the tower cable and deck stern cable of the semi-submersible barge are respectively brought to the mooring piles of the horizontal slipway pier. There are two winches for adjusting the lateral position of the stern of the semi-submersible barge and two winches for longitudinally tightening the stern of the semi-submersible barge on the horizontal slipway pier. The winches and the winches are respectively connected to the lateral sides of the stern of the semi-submersible barge.

7. The method for half-ship inter-location transfer according to claim 1, characterized in that: In S5, a bridge is set between the semi-submersible barge and the horizontal slipway pier, and the ship moving trolley enters the semi-submersible barge through the bridge. In S6, after each ship moving trolley passes through the bridge, the position of the bridge is monitored and adjusted in real time to prevent the bridge from being misaligned by more than 5 mm.

8. The method for half-ship inter-location transfer according to claim 1, characterized in that: In S6, the half-ship is divided into four half-ship components with equal moments relative to the center of gravity along the longitudinal and transverse directions with the center of gravity of the half-ship as the dividing point, and a plurality of the ship-moving trolleys located below each of the half-ship components are connected in series to form a ship-moving trolley group, and the center of the lifting force of the ship-moving trolley group and the center of gravity of the corresponding half-ship component are on the same vertical line.

9. The method for half-ship transshipment according to claim 8, characterized in that: The maximum load-bearing capacity of each set of ship-moving trolleys is 1.35 times the weight of each half-ship component.

10. The method for half-ship inter-location transfer according to claim 1, characterized in that: In S7, reference rib position lines are marked on the outer plate of the half-ship and on the ground of the slipway. When the half-ship is moved until the two reference rib position lines are aligned, the ship moving trolley begins to lower the steel support and the half-ship.

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