Composite side impact-resistant sandwich panel structure and quick installation method

Abstract

This invention discloses a composite side impact-resistant sandwich panel structure design, including a main mounting bracket, a U-shaped sandwich panel filled with non-metallic energy-absorbing foam silicone rubber material, and a connection mechanism design between the mounting bracket and the sandwich panel, and between the mounting bracket and the hull. This invention, by using a U-shaped sandwich panel structure made of non-metallic energy-absorbing foam silicone rubber on the outer surface of the hull, effectively absorbs energy when the vessel is subjected to external impact loads, reducing damage to the main hull structure. Furthermore, the modular design of the connections between the main mounting bracket components and between the mounting bracket and the sandwich panel achieves modularity in most of the installation areas on the hull exterior, allowing for rapid replacement in case of damage, reducing maintenance time and difficulty. Finally, the simple and reliable connection mechanism between the mounting bracket and the hull enables rapid installation, resulting in shorter conversion times and lower conversion difficulty for existing vessels.

Description

Technical Field

[0001] This invention belongs to the field of ship impact protection technology, and specifically relates to a composite side impact-resistant sandwich panel structure and a rapid installation method. Background Technology

[0002] With the continuous expansion of the shipping market, the number of ships at sea is increasing, and ships are becoming larger, faster, and larger in tonnage. This inevitably leads to frequent collisions and scrapes. The high frequency of these accidents requires that the sides and bow of the ship have strong impact resistance and be able to be repaired quickly after an accident. To meet this need, there is an urgent need for a composite side impact-resistant sandwich panel structure design.

[0003] Ship hull structures inevitably deform and fail upon impact. The bow's impact resistance is demonstrated by the plastic deformation of certain structural elements under strong impact loads, absorbing energy and reducing the impact on critical structures. High-risk vessels urgently require specialized protective structures. Currently, protective structures are used on some ships, often by increasing the dimensions of ordinary structures, employing double-layer stiffened plates, or replacing the original ordinary ship structure with a new energy-absorbing structure to improve the ship's impact resistance. These protective structures all need to be installed during ship construction or modified during maintenance. If they are installed directly after the ship is built, the original structure must be replaced, resulting in long construction periods, high engineering costs, and numerous potential hazards after completion. Summary of the Invention

[0004] The purpose of this invention is to enable rapid retrofitting of existing vessels to improve their collision resistance and facilitate rapid repair after collision damage. This invention provides a composite side collision-resistant sandwich panel structure design.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] This invention provides a composite side impact-resistant sandwich panel structure design, with a main support frame. The main support frame consists of a support connecting joint and a cylindrical straight rod. The support connecting joint consists of a universal joint and a connection mechanism between the support joint and the hull. The connection mechanism between the support joint and the hull includes trunnions and pins. This invention is mainly fixed to the hull by pin connection.

[0007] The U-shaped sandwich panel mainly consists of two panels, a folded core layer, and energy-absorbing foam silicone rubber filling. The folded core layer is formed by folding a single panel into a U-shape, which reduces the weight of the structure and provides excellent energy absorption upon impact. The U-shaped sandwich panel has a semi-modular design, with most panels being regular quadrilaterals, allowing for quick replacement and rapid repair in case of damage.

[0008] The U-shaped sandwich panel is embedded in the main support frame via a connecting device. This device primarily connects the cylindrical straight rod to the U-shaped sandwich panel. It consists of a small V-shaped sandwich panel, L-shaped profiles, and reinforcing connecting sleeves. The reinforcing connecting sleeves connect the cylindrical straight rod to the small V-shaped sandwich panel, while four L-shaped profiles on both sides connect the small V-shaped sandwich panel to the U-shaped sandwich panel. This connection mechanism differs from the ordinary design of simply laying the panel directly on top of the support frame. This mechanism effectively embeds the sandwich panel between the support frames. The small V-shaped sandwich panel, as the main connecting component, securely fixes the sandwich panel to the main support frame, preventing deformation under impact and allowing for better load transfer, thus maximizing the energy absorption effect of the sandwich panel.

[0009] The beneficial effects of this invention are as follows: by paving the outer surface of the hull with a U-shaped sandwich panel structure made of non-metallic energy-absorbing foam silicone rubber, it effectively absorbs energy when the ship is subjected to external impact loads, reducing damage to the main hull structure. Furthermore, the modular design of most of the installation areas on the hull's exterior, achieved through rationally designed connections between the main mounting bracket components and between the mounting brackets and the sandwich panel, allows for rapid replacement in case of damage, reducing maintenance time and difficulty. Finally, the invention enables rapid installation due to the simple and reliable connection mechanism between the mounting brackets and the hull, resulting in shorter conversion times and lower conversion difficulty for existing vessels. It is applicable to various bow shapes of ships. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention;

[0011] Figure 2 This is a schematic diagram of the main support structure;

[0012] Figure 3 This is a schematic diagram of the joints connecting the main support frame;

[0013] Figure 4 This is a schematic diagram of a U-shaped sandwich panel structure.

[0014] Figure 5 This is a schematic diagram showing the embedded connection between the U-shaped sandwich panel and the main support frame;

[0015] Figure 6This is a schematic diagram illustrating the application of the present invention in the double-hull side structure and bow structure of a certain type of ship. Detailed Implementation

[0016] This invention provides a composite side impact-resistant sandwich panel structure design that can be directly installed on already constructed vessels. It has low engineering difficulty and a short construction period. With the cooperation of the main support and the U-shaped sandwich panel, when the vessel is subjected to external impact loads, the energy absorption characteristics of the U-shaped sandwich panel itself and the filling material can effectively absorb the external loads to reduce the damage to the main hull. At the same time, most of the installation area of ​​the main hull structure can be modularized, and the damaged parts can be quickly replaced when subjected to minor impact damage, realizing the function of rapid repair.

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and specific examples.

[0018] like Figures 1 to 6 As shown, a composite side impact-resistant sandwich panel structure design includes:

[0019] The main support 2 is composed of a support connecting joint 21 and a cylindrical straight rod 22. The support connecting joint 21 is composed of four universal joints and four support joints and hull connection mechanisms. Each universal joint is connected to a connection mechanism.

[0020] Universal joint 211 includes an inner universal joint fork 2111, a cross shaft 2112, and an outer universal joint fork 2113, which are connected by the cross shaft.

[0021] The connection mechanism 212 between the support joint and the hull includes a trunnion support 2121, a trunnion 2122, a pin 2123, and a joint base 2124. This invention is primarily fixed to the hull via a pin connection. The trunnion support is fixed to the inner fork of the universal joint and connected to the joint base via the trunnion and pin.

[0022] The U-shaped sandwich panel 3 mainly consists of an outer panel 31, a folded core layer 32, an energy-absorbing material 33, and an inner panel 34. The folded core layer is welded to the outer and inner panels to form an integral structure. The energy-absorbing material is pre-formed and inserted into the gaps of the folded core layer. The energy-absorbing material 33 is made of foamed silicone rubber.

[0023] The folded sandwich layer 32 is formed by folding a single plate into a U-shape, which reduces the weight of the structure and provides excellent energy absorption when subjected to impact. The U-shaped sandwich panel 3 has a semi-modular design, with most of the panels being regular quadrilaterals, allowing for quick replacement and rapid repair when damaged.

[0024] The U-shaped sandwich panel and the main support frame are connected by an embedded connection device 4. This connection device 4 is primarily used to connect the cylindrical straight rod 22 and the U-shaped sandwich panel 3. It consists of a small V-shaped sandwich panel 41, reinforced with L-shaped profiles 42, and reinforced connecting sleeves 43. The connecting sleeves 43 connect the cylindrical straight rod 22 to the small V-shaped sandwich panel 41, while the four L-shaped profiles 42 on both sides connect the small V-shaped sandwich panel 41 to the U-shaped sandwich panel 3. This connection mechanism differs from the ordinary design of simply laying the panel directly on top of the support frame. This connection mechanism effectively embeds the sandwich panel between the supports. The small V-shaped sandwich panel 41, as the main connecting component, effectively fixes the U-shaped sandwich panel 3 to the main support frame 2, making it less prone to deformation under impact and better able to transfer loads, fully utilizing the energy absorption effect of the sandwich panel.

[0025] This invention achieves its impact resistance and advantages over other structures based on the following principles:

[0026] 1. This invention adopts a sandwich panel embedded in the main support frame installation design. The main support frame 2, as the primary connecting and load-bearing component, effectively strengthens the overall structural strength, ensuring the entire structure is better secured and improving its rigidity and integrity. The support frame design, combined with adjustable connecting joints, allows for more flexible conforming to the hull curves. The main support frame 2 employs a mesh design, fully utilizing material strength, saving materials, reducing weight, and effectively distributing loads upon impact. Furthermore, because the components of the mesh structure are largely identical in size and shape, construction is rapid, allowing for mass production with high quality and efficiency. It also does not occupy dock space, resulting in minimal on-site work and a shorter construction period.

[0027] 2. The present invention provides a novel bracket connecting joint 21. This mechanism has multiple movable parts and has a certain adjustable range in actual engineering, which can better match the complex hull curves. The bracket joint is modularly designed, which can be mass-produced and can be quickly replaced when damaged. This connecting mechanism has good mobility, can meet a variety of connection requirements, and has strong versatility.

[0028] 3. This invention provides an embedded connection device 4 between a U-shaped sandwich panel and a main support frame. The main body of this connection device is a small V-shaped sandwich panel 41. A cylindrical straight rod 22 is connected to the small V-shaped sandwich panel 41 through a reinforcing connecting sleeve 43. The small V-shaped sandwich panel 41 is connected to the sandwich panel through two sets of four L-shaped profiles 42. The small V-shaped sandwich panel 41 has advantages such as low self-weight, high structural strength, and resistance to deformation. Using the small V-shaped sandwich panel 41 as the main connecting component can better transfer the load between the support frame and the panel, allowing the panel to also play a certain load-bearing role. This connection device has high structural strength, high reliability, and excellent overall performance.

[0029] 4. This invention includes a quick installation method, which mainly includes the following steps:

[0030] Step 1: Weld trunnion support 2121 onto the hull. Use pin 2123 to connect the main support joint 21 to the hull. At this time, the joint is not yet fixed. Care should be taken to prevent damage to the hull due to improper operation.

[0031] Step 2: Install the cylindrical straight rod 22 to complete the installation of the main support frame.

[0032] Step 3: Use a small V-shaped sandwich panel 41 and a reinforcing L-shaped profile 42 to fix the U-shaped sandwich panel 3 onto the main support 2.

[0033] In emergency situations, even when the vessel is not on-site, we can pre-build a partial support structure based on existing vessel data, assemble some panels, and install them on the support structure to complete preliminary preparations. When the target vessel arrives at the port, the partially assembled components can be quickly installed on the hull, thereby shortening the modification and maintenance period and improving project efficiency.

[0034] It should be noted that the above description is merely illustrative and explanatory of the present invention. Those skilled in the art should understand that any modifications and substitutions to the present invention fall within the scope of protection of the present invention.

Claims

1. A composite side impact-resistant sandwich panel structure, characterized in that, The composite side impact-resistant sandwich panel structure includes: a main support, a U-shaped sandwich panel, and a connecting device. The main support is connected to the U-shaped sandwich panel through the connecting device. The main support includes a support connecting joint and a cylindrical straight rod. The cylindrical straight rod is connected to the support connecting joint, and a connecting device connects the cylindrical straight rod to the U-shaped sandwich panel. The connecting device includes a V-shaped sandwich plate, L-shaped profiles, and a connecting sleeve; the connecting sleeve connects the cylindrical straight rod to the V-shaped sandwich plate, and the four L-shaped profiles on the front and back sides are responsible for connecting the V-shaped sandwich plate to the U-shaped sandwich plate; The U-shaped sandwich panel includes an outer panel, a folded core layer, an energy-absorbing filling material, and an inner panel. The folded core layer is welded to the outer panel and the inner panel to form an integral structure. The energy-absorbing filling material is pre-formed and then inserted into the gaps of the folded core layer. The U-shaped sandwich panel is embedded between the cylindrical straight rods of the main support, and the V-shaped sandwich panel serves as the main connecting component to fix the U-shaped sandwich panel on the main support. When subjected to impact, the load is transferred between the support and the plate, so that the plate can play a load-bearing role. The bracket connecting joint includes four universal joints and four connecting mechanisms. Each universal joint is connected to a connecting mechanism, and the bracket connecting joint is connected to the hull through the connecting mechanisms.

2. The composite side impact-resistant sandwich panel structure as described in claim 1, characterized in that, The universal joint includes an inner universal joint fork, a cross shaft, and an outer universal joint fork, with the inner and outer universal joint forks connected by the cross shaft.

3. The composite side impact-resistant sandwich panel structure as described in claim 2, characterized in that, The connecting mechanism includes a trunnion support, a trunnion, a pin, and a joint base. The trunnion support is fixedly connected to the inner fork of the universal joint and is connected to the joint base through the trunnion and the pin.

4. The composite side impact-resistant sandwich panel structure as described in claim 3, characterized in that, The connecting mechanism is connected to the hull by a pin.

5. The composite side impact-resistant sandwich panel structure as described in claim 1, characterized in that, The foldable sandwich layer is formed by folding a single board into a U-shape.

6. The composite side impact-resistant sandwich panel structure as described in claim 1, characterized in that, The main support structure adopts a mesh structure.

7. A composite side impact-resistant sandwich panel structure as described in claim 6, characterized in that, The U-shaped sandwich panel adopts a semi-modular structure and has a regular quadrilateral shape.

8. A method for rapid installation of a composite side impact-resistant sandwich panel, characterized in that, The composite side impact-resistant sandwich panel structure as described in any one of claims 1 to 7 includes the following steps: Step 1: Weld trunnion supports onto the hull and use pins to connect the main support joints to the hull. At this point, the joints are not yet fixed, so care must be taken to prevent damage to the hull due to improper operation. Step 2: Install the cylindrical straight rods to complete the installation of the main support frame; Step 3: Use V-shaped sandwich panels and L-shaped profiles to fix the U-shaped sandwich panel to the main support frame.

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