Plugging structure for half-ship floating of PCTC ship

Abstract

The utility model relates to the field of ships, in particular to a PCTC ship half-ship floating plugging structure which comprises a ship body provided with a channel, a sealing plate is welded in the channel, and a stiffener is welded on one side of the sealing plate. The toggle plate is located on the side, away from the sealing plate, of the stiffener, and the toggle plate is welded to the ship body and the stiffener; the reinforcing piece is located on the side, away from the stiffener, of the sealing plate, and the reinforcing piece is welded to the ship body and the sealing plate. According to the half-ship floating plugging structure of the PCTC ship, the efficiency is improved, and the sealing performance of a channel is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of ships, in particular to a half-ship floating and plugging structure for a PCTC ship. Background Art

[0002] Pure Car and Truck Carriers (PCTCs) are collectively referred to as car carrier ships. They were initially formed by converting some landing craft into transport trucks after World War II. In this mode, cars can drive in and out directly, changing the mode of loading and unloading goods by tower cranes. Later, with the development of the automotive industry, the United States built the world's first roll-on / roll-off ship, the "Comet". Its feature is that cars can directly drive on and off through the connecting plate at the stern of the ship, and there is a special fixing system, making the efficiency of transporting cars very high. Now, the largest roll-on / roll-off ship can load nearly 9,000 cars at a time, distributed on more than 10 decks. Therefore, it has the highest cost performance in transporting cars, especially for high-value goods like cars, where the freight rate accounts for a very low proportion, especially when the market is in short supply. To accelerate the construction speed of PCTC ships, a one-and-a-half-ship construction mode is required in the shipyard, that is, one ship is built and floated out of the dock at the dock gate, while the half-ship near the dock head only floats and then is shifted to the dock gate position to continue construction as a complete ship.

[0003] The structure of a roll-on / roll-off ship can be referred to the Chinese utility model patent with the application number CN201220325633.6 and the name of an automotive roll-on / roll-off ship with a low-noise cargo hold ventilation system. Since the existing cargo hold bulkhead design of PCTC ships often does not have a complete watertight bulkhead to isolate the cargo hold to provide buoyancy for half-ship floating, these non-fully watertight parts may become safety hazards due to water ingress during the half-ship floating process of the ship. Therefore, it is necessary to plug some non-watertight parts. The traditional plugging method is to use a whole steel plate for welding plugging. However, due to the large main dimensions of PCTC ships, the large distance to be plugged, and the high water level, the traditional use of only steel plates for plugging may cause the plugging steel plate to deform due to water pressure or even cause the weld seam to tear, resulting in water ingress accidents or tearing the structure of the PCTC ship itself, which is completely unacceptable for high-value PCTC ships. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a safe, scientific and reliable half-ship floating and plugging structure for a PCTC ship.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a half-ship floating and plugging structure for a PCTC ship, comprising:

[0006] A hull, provided with a passage, in which a sealing plate is welded, and a stiffener is welded on one side of the sealing plate;

[0007] The bracket is located on the side of the stiffener away from the sealing plate, and the bracket is welded to the hull and the stiffener respectively;

[0008] The reinforcing member is located on the side of the sealing plate away from the stiffener, and the reinforcing member is welded to the hull and the sealing plate respectively.

[0009] Furthermore, the bracket is welded to the bottom of the hull and the stiffener respectively, and the reinforcing member is welded to the top of the hull and the sealing plate respectively.

[0010] Furthermore, two or more stiffeners are arranged at intervals in the channel.

[0011] Furthermore, the hull includes an upper deck, a lower deck and a T-profile panel arranged vertically. The channel is located between the upper deck and the lower deck. The T-profile panel is arranged on the side of the upper deck facing the lower deck. The sealing plate and the stiffener are both located between the T-profile panel and the lower deck, and the reinforcing member is welded to the T-profile panel and the sealing plate respectively.

[0012] Furthermore, the cross-sectional shape of the T-profile panel is T-shaped, and the reinforcing member is provided with a card slot for the T-profile panel to insert.

[0013] Furthermore, a corner hole is provided at the bottom of the card slot.

[0014] Furthermore, the top of the stiffener has a cutting and welding part, and the cutting and welding part is welded to the T-profile panel.

[0015] Furthermore, the cross-sectional shape of the bracket is a right triangle.

[0016] Furthermore, the reinforcing member is a reinforcing flat iron.

[0017] Furthermore, the sealing plate is a steel plate.

[0018] The beneficial effect of the utility model lies in: a semi-ship floating and plugging structure of a PCTC ship. The sealing plate is erected in the channel, and a stiffener is welded on the sealing plate. The stiffener can use bulb flat steel or angle steel. Its function is to enhance the bending section modulus of the steel plate, so that the steel plate can bear greater water pressure without being damaged. The bracket plays a role in spreading the acting force at the lower end of the stiffener to the lower structure, avoiding local stress concentration at the end of the stiffener and causing local damage. The reinforcing flat iron is installed on the other side of the stiffener, which not only improves the efficiency but also ensures the sealing of the channel. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a semi-ship floating and plugging structure of a PCTC ship;

[0020] Figure 2 It is a sectional view taken along the line A-A of the semi-ship floating and plugging structure of a PCTC ship;

[0021] Figure 3 Structural schematic diagram of the strengthening member;

[0022] Label description:

[0023] 1. Hull; 11. Passage; 12. Sealing plate; 13. Stiffener; 14. Upper deck; 15. Lower deck; 16. T-section panel; 2. Brackets; 3. Strengthening member; 31. Card slot; 32. Corner hole. Specific implementation mode

[0024] To describe in detail the technical content, achieved purpose and effect of the present utility model, the following is described in conjunction with the implementation mode and with reference to the drawings.

[0025] The present utility model provides a semi-ship floating and plugging structure for a PCTC ship. When the PCTC ship floats semi-ship, the passage 11 space between the T-section below the upper deck and the lower deck needs to be plugged.

[0026] Please refer to Figures 1 to 3 As shown, a semi-ship floating and plugging structure for a PCTC ship of the present utility model includes:

[0027] A hull 1 is provided with a passage 11, a sealing plate 12 is welded in the passage 11, and a stiffener 13 is welded on one side of the sealing plate 12;

[0028] Brackets 2 are located on the side of the stiffener 13 away from the sealing plate 12, and the brackets 2 are respectively welded to the hull 1 and the stiffener 13;

[0029] A strengthening member 3 is located on the side of the sealing plate 12 away from the stiffener 13, and the strengthening member 3 is respectively welded to the hull 1 and the sealing plate 12.

[0030] As can be seen from the above description, the beneficial effect of the present utility model lies in: a semi-ship floating and plugging structure for a PCTC ship, the sealing plate 12 is erected in the passage 11, and a stiffener 13 is welded on the sealing plate 12. The stiffener 13 can use bulb flat steel or angle steel, and its function is to increase the bending section modulus of the steel plate, so that the steel plate can withstand greater water pressure without being damaged. The brackets 2 play a role in spreading the acting force at the lower end of the stiffener 13 to the lower structure, avoiding local stress concentration at the end of the stiffener 13 and causing local damage. The strengthening flat iron is installed on the other side of the stiffener 13, which not only improves the efficiency but also ensures the sealing of the passage 11.

[0031] In an alternative embodiment, the brackets 2 are respectively welded to the bottom of the hull 1 and the stiffener 13, and the strengthening member 3 is respectively welded to the top of the hull 1 and the sealing plate 12.

[0032] In an alternative embodiment, two or more stiffeners 13 are arranged at intervals in the passage 11.

[0033] As can be seen from the above description, the stiffeners 13 are arranged on the closing plate 12 according to the span law of the original ship structure, enhancing the flexural section modulus of the steel plate.

[0034] In an alternative embodiment, the hull 1 includes an upper deck 14, a lower deck 15 and a T-section panel 16 arranged vertically. The passage 11 is located between the upper deck 14 and the lower deck 15. The T-section panel 16 is disposed on the side of the upper deck 14 facing the lower deck 15. Both the closing plate 12 and the stiffeners 13 are located between the T-section panel 16 and the lower deck 15. The reinforcing members 3 are welded to the T-section panel 16 and the closing plate 12 respectively.

[0035] In an alternative embodiment, the cross-sectional shape of the T-section panel 16 is T-shaped, and the reinforcing member 3 is provided with a slot 31 for inserting the T-section panel 16.

[0036] As can be seen from the above description, the slot 31 can hold the TT-section panel 16 of the original PCTC ship. The free edge of the TT-section panel 16 is part of the T-section, and its strength and stiffness are crucial for the stability of the overall structure. During design, the dimensions, shape and connection method with other parts of the free edge need to be considered to ensure that it can withstand the expected loads. Deformability: Since the free edge is in a free state and is usually thin, it is prone to deformation when stressed. This deformation may affect the stability and safety of the overall structure. Therefore, during construction, it is generally not welded to avoid deformation of the free edge.

[0037] In an alternative embodiment, the bottom of the slot 31 is provided with a corner hole 32.

[0038] As can be seen from the above description, the reinforcing flat bar has its two ends beveled, with a slot 31 and a corner hole 32 in the middle. The welding of the reinforcing flat bar to the T-section terminates at the corner hole 32 to prevent the free edge of the TT-section panel 16 from being damaged by welding and the original structure from being impaired.

[0039] In an alternative embodiment, the top of the stiffener 13 has a cut-welded portion, and the cut-welded portion is welded to the T-section panel 16.

[0040] As can be seen from the above description, the upper end of the stiffener 13 is beveled so that the end can be welded to the original TT-section panel 16 of the PCTC ship.

[0041] In an alternative embodiment, the cross-sectional shape of the bracket 2 is a right triangle.

[0042] In an alternative embodiment, the reinforcing member 3 is a reinforcing flat bar.

[0043] In an alternative embodiment, the closing plate 12 is a steel plate.

[0044] From the above description, it can be seen that the steel plate, stiffener 13, triangular gusset plate 2, and reinforcing flat bar all use high-strength steel materials, so they have a higher yield strength to resist the deformation of the structure.

[0045] In an alternative embodiment, the lower end of the reinforcing member 3 extends beyond the cutting and welding portion of the stiffener 13.

[0046] From the above description, it can be seen that the lower end of the reinforcing flat bar extends beyond the beveled portion of the stiffener 13, thus compensating for the section modulus of the bending resistance generated by the beveling at the upper end of the stiffener 13.

[0047] In an alternative embodiment, the upper end toe of the reinforcing member 3 reaches the end of the longitudinal profile of the hull 1.

[0048] From the above description, it can be seen that the toe at the upper end reaches the end of the longitudinal profile of the original PCTC ship, enabling the force on the toe to be well transmitted to the longitudinal profile of the original PCTC ship.

[0049] In an alternative embodiment, both ends of the reinforcing member 3 are beveled.

[0050] From the above description, it can be seen that beveling both ends can well spread the stress, avoiding stress concentration at the ends and generating hard spots.

[0051] The working principle is as follows: First, cut the incoming steel plate into the size of the cross-section of the passage 11 in the workshop, and then arrange and install the stiffeners 13 on the steel plate according to the span law of the original ship structure. Since various construction equipment in the workshop, such as small cranes, cutting machines, welding machines, etc., are complete, the construction efficiency is much higher than that in the dry dock. Then transport the steel plate with the welded stiffeners 13 to the dry dock, and weld the four sides of the steel plate with the TT profile panel 16, longitudinal wall plate, and lower deck 15 of the PCTC ship passage 11 at the sealing surface. After welding, weld the triangular gusset plate 2 below. Then weld the reinforcing flat bar. The combination of these four can well combine the structure with the T profile of the original PCTC ship, and at the same time, it can not damage the free edge of its panel. Moreover, at the TT profile panel 16, through the cooperation of the stiffener 13 and the reinforcing flat bar, the section modulus of the bending resistance can be ensured. The steel plate can withstand greater water pressure without being damaged.

[0052] Please refer to Figures 1 to 3 As shown in the figure, Embodiment 1 of the present invention is: A half-ship floating and sealing structure for a PCTC ship, comprising:

[0053] The hull 1 is provided with a passage 11, a sealing plate 12 is welded in the passage 11, and a stiffener 13 is welded on one side of the sealing plate 12;

[0054] The gusset plate 2 is located on the side of the stiffener 13 away from the sealing plate 12, and the gusset plate 2 is welded to the hull 1 and the stiffener 13 respectively;

[0055] The stiffener 3 is located on the side of the sealing plate 12 away from the stiffening girder 13, and the stiffener 3 is welded to the hull 1 and the sealing plate 12 respectively.

[0056] The bracket 2 is welded to the bottom of the hull 1 and the stiffening girder 13 respectively, and the stiffener 3 is welded to the top of the hull 1 and the sealing plate 12 respectively. More than two stiffening girders 13 are arranged at intervals in the channel 11. The hull 1 includes an upper deck 14, a lower deck 15 and a T-shaped section panel 16 arranged vertically. The channel 11 is located between the upper deck 14 and the lower deck 15. The T-shaped section panel 16 is arranged on the side of the upper deck 14 facing the lower deck 15. The sealing plate 12 and the stiffening girders 13 are both located between the T-shaped section panel 16 and the lower deck 15, and the stiffener 3 is welded to the T-shaped section panel 16 and the sealing plate 12 respectively. The cross-sectional shape of the T-shaped section panel 16 is T-shaped, and the stiffener 3 is provided with a slot 31 for the T-shaped section panel 16 to insert. The bottom of the slot 31 is provided with a corner hole 32. The top of the stiffening girder 13 has a cut welding part, and the cut welding part is welded to the T-shaped section panel 16. The cross-sectional shape of the bracket 2 is a right triangle. The stiffener 3 is a reinforcing flat iron. The sealing plate 12 is a steel plate.

[0057] In summary, for the semi-ship floating and plugging structure of the PCTC ship of the present invention, the sealing plate is erected in the channel, and the stiffening girders are welded on the sealing plate. The stiffening girders can use bulb flats or angle steels, and its function is to increase the moment of inertia of the steel plate, so that the steel plate can withstand greater water pressure without being damaged. The bracket plays a role in spreading the force acting on the lower end of the stiffening girder to the lower structure, avoiding excessive local stress at the end of the stiffening girder and causing local damage. The reinforcing flat iron is installed on the other side of the stiffening girder, which not only improves the efficiency but also ensures the sealing of the channel.

[0058] The above description is only an embodiment of the present invention, and it does not limit the patent scope of the present invention. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A half-ship floating and plugging structure for a PCTC ship, characterized in that, Comprising: A hull, provided with a passageway, in which a sealing plate is welded, and a stiffener is welded to one side of the sealing plate; An elbow plate, located on the side of the stiffener away from the sealing plate, and the elbow plate is welded to the hull and the stiffener respectively; A reinforcing member, located on the side of the sealing plate away from the stiffener, and the reinforcing member is welded to the hull and the sealing plate respectively.

2. The PCTC ship half-ship floating plugging structure according to claim 1, characterized in that The elbow plate is welded to the bottom of the hull and the stiffener respectively, and the reinforcing member is welded to the top of the hull and the sealing plate respectively.

3. The PCTC ship half-ship floating and plugging structure according to claim 1, characterized in that, More than two stiffeners are arranged at intervals in the passageway.

4. The half-ship floating and plugging structure of the PCTC ship according to claim 1, characterized in that, The hull includes an upper deck, a lower deck and a T-shaped profile panel arranged vertically. The passageway is located between the upper deck and the lower deck. The T-shaped profile panel is arranged on the side of the upper deck facing the lower deck. The sealing plate and the stiffener are both located between the T-shaped profile panel and the lower deck, and the reinforcing member is welded to the T-shaped profile panel and the sealing plate respectively.

5. The PCTC ship half-ship floating and plugging structure according to claim 4, characterized in that, The cross-sectional shape of the T-shaped profile panel is T-shaped, and the reinforcing member is provided with a slot for the insertion of the T-shaped profile panel.

6. The PCTC ship half-ship floating plugging structure according to claim 5, characterized in that, Corner holes are provided at the bottom of the slot.

7. The PCTC ship half-ship floating plugging structure according to claim 5, characterized in that The top of the stiffener has a cutting and welding portion, and the cutting and welding portion is welded to the T-shaped profile panel.

8. The PCTC ship semi-ship floating and plugging structure according to claim 1, characterized in that, The cross-sectional shape of the elbow plate is a right triangle.

9. The PCTC ship half-ship floating plugging structure according to claim 1, wherein, The reinforcing member is a reinforcing flat iron.

10. The semi-ship floating and plugging structure of the PCTC ship according to claim 1, characterized in that The sealing plate is a steel plate.

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