Stem structure for cargo ship

Abstract

The stem structure comprises a stem body and a pressure relief plate connected to the front side of the stem body, a plurality of transverse supporting plates are arranged on the inner side of the stem body, a supporting rod is connected between every two adjacent transverse supporting plates, and a plurality of pressure relief holes are formed in the pressure relief plate. The outer surface of the pressure relief plate is detachably connected with a titanium alloy filter screen covering the pressure relief holes, a filter mesh corresponding to the titanium alloy filter screen is arranged between the pressure relief plate and the titanium alloy filter screen, the filter mesh comprises a plurality of grooves in one-to-one correspondence with the pressure relief holes, and the grooves bend towards the corresponding pressure relief holes and are arranged in the corresponding pressure relief holes. The cargo ship has the advantages that in the driving process of the cargo ship, the titanium alloy filter screen and the filter screen piece are arranged to avoid the situation that the pressure relief holes are prone to being blocked by marine organisms or sundries and cannot effectively divide water flow of the ship bow, the frequency that the pressure relief holes need to be cleaned by sailors due to blockage is reduced, and the maintenance workload and time are reduced.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, and more specifically, to a bow structure for cargo ships. Background Technology

[0002] The bow is the foremost component at the bow of a ship and one of the most important components of the hull. The outer plating, deck, platform, and longitudinal girder on the sides of the bow all end at the bow. Its function is to connect the outer plating, deck, and the end of the keel, and to strengthen the bow and ensure that the shape of the bow end remains unchanged.

[0003] Utility model patent application number 202021532934.7 discloses a pressure-bearing structure for the bow of a general cargo ship, including a pressure relief plate connected to the bow. The bow includes a steel base plate with an arc-shaped outward convex front side connected to the pressure relief plate. The rear side of the base plate has an arc-shaped groove. Several transverse support plates are arranged in the groove along the length of the base plate at predetermined intervals. At least one longitudinal support plate perpendicular to the transverse support plates is provided between two adjacent transverse support plates. The longitudinal support plate is fixedly connected to the transverse support plates. The pressure relief plate has multiple interconnected pressure relief holes. In this technical solution, water is diverted through the pressure relief holes, thereby reducing the water resistance experienced by the general cargo ship during movement. The transverse support plates absorb the vibration generated when the bow is subjected to longitudinal collisions, thus protecting the bow body and reducing hull sway. The longitudinal support plates reinforce the fixation of the transverse support plates, strengthening the structural strength of the transverse support plates within the bow.

[0004] However, in the existing technology, the pressure relief plate lacks a structure to prevent the pressure relief hole from clogging. During the operation of the cargo ship, the pressure relief hole is easily blocked by marine organisms or debris, which makes it impossible for the pressure relief hole to effectively divert the water flow at the bow. Moreover, the crew needs to clean the pressure relief hole frequently when it is blocked, which increases the workload and time of maintenance. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a bow structure for cargo ships.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A bow structure for a cargo ship includes a bow body and a pressure relief plate connected to the front side of the bow body. The inner side of the bow body includes several evenly arranged transverse support plates, and a support rod is connected between two adjacent transverse support plates. The pressure relief plate includes several pressure relief holes. A titanium alloy filter screen for filtering marine organisms or debris is detachably connected to the outer surface of the pressure relief plate. The titanium alloy filter screen covers the several pressure relief holes. A filter screen corresponding to the titanium alloy filter screen is provided between the pressure relief plate and the titanium alloy filter screen. The filter screen includes several grooves that correspond one-to-one with the several pressure relief holes. The grooves are bent towards the corresponding pressure relief holes and placed in the corresponding pressure relief holes.

[0008] Further configured, both the titanium alloy filter screen and the filter screen sheet include connection holes, the pressure relief plate has a fixing screw groove corresponding to the connection hole on the filter screen sheet, the titanium alloy filter screen is provided with fixing bolts, the fixing bolts pass through the connection holes on the titanium alloy filter screen and the connection holes on the filter screen sheet in sequence, and the fixing bolts are threadedly connected to the fixing screw grooves, and the fixing bolts are made of aluminum bronze.

[0009] A further provision is that the titanium alloy filter screen is provided with a superhydrophobic coating.

[0010] A further configuration is that the diameter of the filter pores on the filter screen is smaller than the diameter of the filter pores on the titanium alloy filter screen.

[0011] By adopting the above technical solution, the beneficial effects of this utility model are as follows: during the operation of the cargo ship, the titanium alloy filter screen and filter mesh prevent the pressure relief hole from being easily blocked by marine organisms or debris, which would prevent the pressure relief hole from effectively diverting the water flow at the bow. It also reduces the frequency of cleaning by the crew due to the blockage of the pressure relief hole, thereby reducing the workload and time of maintenance. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of the structure of a titanium alloy filter screen and a pressure relief plate.

[0014] In the figure: bow body 111, pressure relief plate 1, transverse support plate 2, support rod 3, pressure relief hole 101, titanium alloy filter screen 4, filter screen 5, groove 501, fixing screw groove 102, fixing bolt 6. Detailed Implementation

[0015] Reference Figures 1 to 2 The embodiments of this utility model will be further described below.

[0016] A bow structure for a cargo ship includes a bow body 111 and a pressure relief plate 1 connected to the front of the bow body 111. The pressure relief plate 1 is made of bent steel plate. The inner side of the bow body 111 includes several evenly arranged transverse support plates 2. A support rod 3 connects two adjacent transverse support plates 2. The arrangement of the transverse support plates 2 and support rods 3 facilitates the improvement of the overall structural strength of the bow body 111. The pressure relief plate 1 includes several pressure relief holes 101. The outer surface of the pressure relief plate 1 is detachably connected to a device for filtering marine organisms or debris. The titanium alloy filter screen 4, with its corrosion resistance and high strength, can withstand seawater erosion and biological adhesion for a long time. The titanium alloy filter screen 4 covers several pressure relief holes 101. A filter screen 5 corresponding to the titanium alloy filter screen 4 is provided between the pressure relief plate 1 and the titanium alloy filter screen 4. The filter screen 5 includes several grooves 501 that correspond one-to-one with the pressure relief holes 101. The grooves 501 are bent towards the corresponding pressure relief holes 101 and placed in the corresponding pressure relief holes 101. The diameter of the filter holes on the filter screen 5 is smaller than the diameter of the filter holes on the titanium alloy filter screen 4.

[0017] Working principle: During the ship's operation, water flow impacts the bow hull 111. The pressure relief hole 101 on the pressure relief plate 1 diverts the water flow at the bow, reducing the impact pressure on the bow. Combined with the titanium alloy filter screen 4 and filter mesh 5, the water flow at the bow undergoes preliminary filtration through the titanium alloy filter screen 4, intercepting large marine organisms (such as algae and jellyfish) and debris (such as plastic and driftwood), preventing the pressure relief hole 101 from clogging. When the water flows through the filter mesh 5, the smaller diameter of the filter holes compared to the titanium alloy filter screen 4 facilitates further filtration, removing small particles (such as silt and shells) from the water flow. The filter screen 4 and filter screen 5 intercept debris and other contaminants, further preventing the pressure relief hole 101 from becoming clogged. The groove 501, embedded within the pressure relief hole 101, forms a flow channel, preventing the filter screen 5 from directly contacting the pressure relief hole 101 and obstructing water flow. Simultaneously, the arc-shaped structure of the groove 501 accelerates the local flow velocity at the pressure relief hole 101, reducing the probability of clogging. Ultimately, during the cargo ship's operation, the titanium alloy filter screen 4 and filter screen 5 prevent the pressure relief hole 101 from being easily clogged by marine life or debris, thus preventing the pressure relief hole 101 from effectively diverting water flow at the bow. This also reduces the frequency of cleaning required by the crew due to clogging of the pressure relief hole 101, reducing maintenance workload and time.

[0018] Both the titanium alloy filter screen 4 and the filter screen 5 include connection holes. The pressure relief plate 1 has a fixing screw groove 102 corresponding to the connection hole on the filter screen 5. The titanium alloy filter screen 4 is equipped with a fixing bolt 6, which passes through the connection hole on the titanium alloy filter screen 4 and the connection hole on the filter screen 5 in sequence. The fixing bolt 6 is threadedly connected to the fixing screw groove 102, realizing the disassembly and connection of the titanium alloy filter screen 4 and the filter screen 5 on the pressure relief plate 1. This facilitates the stable installation of the titanium alloy filter screen 4 and the filter screen 5, and also makes it easy to periodically disassemble the titanium alloy filter screen and the filter screen 5 for cleaning and maintenance. The fixing bolt 6 is made of aluminum bronze, which gives the fixing bolt 6 good corrosion resistance and high strength, enabling it to adapt to the marine environment and ensuring the stability of the filter screen and the filter screen during long-term use.

[0019] The titanium alloy filter screen 4 is coated with a superhydrophobic coating. The application of the superhydrophobic coating enhances the self-cleaning ability of the titanium alloy filter screen 4, reduces the adhesion of marine organisms and debris on the filter screen surface, thereby reducing the risk of blockage of the titanium alloy filter screen 4, which helps to reduce the risk of blockage of the pressure relief hole 101, and reduces the corrosion of the titanium alloy filter screen 4 by marine organisms, reducing the maintenance frequency. In addition, the superhydrophobic coating can reduce the resistance of water flow on the filter screen surface, ensuring that water flows smoothly through the titanium alloy filter screen 4 and improving the diversion effect of the pressure relief hole 101.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bow structure for a cargo ship, comprising a bow body (111) and a pressure relief plate (1) connected to the front side of the bow body (111), the pressure relief plate (1) including a plurality of pressure relief holes (101), the inner side of the bow body (111) including a plurality of evenly arranged transverse support plates (2), and a support rod (3) connecting two adjacent transverse support plates (2), characterized in that, The outer surface of the pressure relief plate (1) is detachably connected to a titanium alloy filter screen (4) for filtering marine organisms or debris. The titanium alloy filter screen (4) covers several pressure relief holes (101). A filter screen (5) corresponding to the titanium alloy filter screen (4) is provided between the pressure relief plate (1) and the titanium alloy filter screen (4). The filter screen (5) includes several grooves (501) that correspond one-to-one with several pressure relief holes (101). The grooves (501) are bent toward the corresponding pressure relief holes (101) and placed in the corresponding pressure relief holes (101).

2. The bow pillar structure for a cargo ship according to claim 1, characterized in that, Both the titanium alloy filter screen (4) and the filter screen (5) include connection holes. The pressure relief plate (1) has a fixing screw groove (102) corresponding to the connection hole on the filter screen (5). The titanium alloy filter screen (4) is provided with a fixing bolt (6). The fixing bolt (6) passes through the connection hole on the titanium alloy filter screen (4) and the connection hole on the filter screen (5) in sequence. The fixing bolt (6) is threadedly connected to the fixing screw groove (102). The fixing bolt (6) is made of aluminum bronze.

3. A bowpost structure for a cargo ship according to claim 2, characterized in that, The titanium alloy filter screen (4) is provided with a superhydrophobic coating.

4. A bow structure for a cargo ship according to claim 3, characterized in that, The diameter of the filter holes on the filter screen (5) is smaller than that of the filter holes on the titanium alloy filter screen (4).

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