A breeding auxiliary ship bulwark door structure
By designing a bulwark door structure on the aquaculture support vessel and utilizing hinged components and door locking components, the shielding deck effectively blocks the stair passageway, solving the safety hazard of the bulwark door failing to block the stair passageway and improving crew safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGLONG BOAT TECH
- Filing Date
- 2025-05-19
- Publication Date
- 2026-06-12
Smart Images

Figure CN224349092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship-related technology, and in particular to a bulwark door structure for an aquaculture auxiliary vessel. Background Technology
[0002] Aquaculture support vessels typically have entrances and exits on their bulwarks, with bulwark doors hinged to these locations. Stairs for boarding and disembarking are located on the deck below the entrances and exits. If the stairwell is not covered when the bulwark doors are closed, crew members working close to the bulwark on deck may fall into the stairwell during movement, posing a safety hazard. Therefore, designing a bulwark door structure that can cover the stairwell on deck has become an urgent technical problem to be solved. Utility Model Content
[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a bulwark door structure for aquaculture auxiliary vessels to solve the above-mentioned technical problems.
[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:
[0005] According to one aspect of this utility model, a bulwark door structure for an aquaculture auxiliary vessel is designed, comprising: a bulwark door body and a shielding deck for obscuring the upper part of the stair passage on the deck. The right side of the bulwark door body is provided with a first hinge assembly for hinged to the bulwark, and the left side is provided with a door locking assembly. The shielding deck is located on the front side of the bulwark door body, and its rear end is hinged to the lower end of the bulwark door body through a second hinge assembly. The shielding deck can be flipped to fit against the front side of the bulwark door body.
[0006] Using the above technical solution, the bulwark door is installed at the entrance / exit position on the bulwark and is hinged to the bulwark via a first hinge assembly. In the closed state, the bulwark door is kept closed by a door-closing locking assembly. The flipped shielding deck can block the upper part of the stair passage on the deck, thereby preventing crew members working close to the bulwark from falling into the stair passage and ensuring crew safety. When it is necessary to open the bulwark door, the shielding deck is first flipped so that it is attached to the front of the bulwark door, and the door-closing locking assembly is used to release the lock on the bulwark door, after which the bulwark door can be opened. The bulwark door structure of this solution can improve the safety of crew operations, and the structure is simple and has good performance.
[0007] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:
[0008] In some embodiments, the shielding deck is provided with a plurality of through holes.
[0009] In some embodiments, two first hinge components are provided. The first hinge component includes a first connecting plate, a second connecting plate with one end located between the two first connecting plates, a first bolt, and a first nut. The first connecting plate is fixedly connected to the bulwark door body. One end of the first bolt passes through a through hole on the first connecting plate and the through hole on the second connecting plate and is threadedly connected to the first nut.
[0010] In some embodiments, the door locking assembly includes an L-shaped pin, a first connecting lug, and a second connecting lug. The first connecting lug is fixedly connected to the bulwark door body, and the pin is inserted into a through hole on the first connecting lug and a through hole on the second connecting lug.
[0011] In some embodiments, two second hinge assemblies are provided. The second hinge assembly includes a third connecting plate, a fourth connecting plate with one end located between the two third connecting plates, a second bolt, and a second nut. The third connecting plate is fixedly connected to the shielding deck. The bottom of the bulwark door is provided with an installation groove. The fourth connecting plate is located in the installation groove and fixedly connected to the bulwark door. One end of the second bolt passes through a through hole on the third connecting plate and the through hole on the fourth connecting plate and is threadedly connected to the second nut.
[0012] In some embodiments, the bulwark door and the shielding deck are both made of aluminum or aluminum alloy, and the shielding deck is provided with several strip-shaped through holes.
[0013] In some embodiments, the top surface of the shielding deck is provided with several anti-slip protrusions. Attached Figure Description
[0014] Figure 1 A schematic diagram of a bulwark door structure for an aquaculture auxiliary vessel, provided for one embodiment of this utility model;
[0015] Figure 2 Left view of the bulwark door structure for aquaculture auxiliary vessels;
[0016] Figure 3 This is a partial schematic diagram of a bulwark door installed on the bulwark, with the bulwark door in the closed position.
[0017] Figure 4 for Figure 3 A diagram from another perspective;
[0018] Figure 5 This is a partial schematic diagram of a bulwark door installed on the bulwark, with the bulwark door in the open position.
[0019] Figure label:
[0020] 1. Bulwark door; 11. Mounting slot; 2. Shelter deck; 21. Through hole; 3. First hinge assembly; 31. First connecting plate; 32. Second connecting plate; 33. First bolt; 34. First nut; 4. Door closing locking assembly; 41. Bolt; 42. First connecting lug; 43. Second connecting lug; 5. Second hinge assembly; 51. Third connecting plate; 52. Fourth connecting plate; 53. Second bolt; 54. Second nut; K1. Staircase passage; X1. Bulwark. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0022] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0024] refer to Figures 1 to 5 As shown, the present invention provides a bulwark door structure for an aquaculture auxiliary vessel, comprising: a bulwark door body 1 and a shielding deck 2 for shielding the upper part of the stair passage K1 on the deck. A first hinge assembly 3 for hinged to the bulwark X1 is provided on the right side of the bulwark door body 1, and a door locking assembly 4 is provided on the left side of the bulwark door body 1. The door locking assembly 4 is used to keep the bulwark door body 1 closed. The shielding deck 2 is located on the front side of the bulwark door body 1, and the rear end of the shielding deck 2 is hinged to the lower end of the bulwark door body 1 by a second hinge assembly 5. The shielding deck 2 can be flipped to attach to the front side of the bulwark door body 1.
[0025] Two first hinge components 3 are provided. The first hinge component 3 includes a first connecting plate 31, a second connecting plate 32 with one end located between the two first connecting plates 31, a first bolt 33 and a first nut 34. The first connecting plate 31 is welded to the bulwark door 1, and the second connecting plate 32 is used to weld to the bulwark X1. One end of the first bolt 33 passes through the through hole on the first connecting plate 31 and the through hole on the second connecting plate 32 and is threadedly connected to the first nut 34.
[0026] The door closing locking assembly 4 is provided in one or two ways. In this embodiment, it is preferred that the door closing locking assembly 4 is provided in two ways. The door closing locking assembly 4 includes an L-shaped pin 41, a first connecting ear 42 and a second connecting ear 43. The first connecting ear 42 is welded to the bulwark door 1, and the second connecting ear 43 is used to weld to the bulwark X1. The pin 41 is inserted into the through hole on the first connecting ear 42 and the through hole on the second connecting ear 43.
[0027] Two second hinge components 5 are provided. The second hinge component 5 includes a third connecting plate 51, a fourth connecting plate 52 with one end located between the two third connecting plates 51, a second bolt 53, and a second nut 54. The third connecting plate 51 is welded to the shielding deck 2. The bottom of the bulwark door 1 is provided with an installation groove 11. The fourth connecting plate 52 is located in the installation groove 11 and welded to the bulwark door 1. One end of the second bolt 53 passes through the through hole on the third connecting plate 51 and the through hole on the fourth connecting plate 52 and is threadedly connected to the second nut 54.
[0028] Both the bulwark door 1 and the shielding deck 2 are made of aluminum or aluminum alloy, which are lightweight and facilitate the opening and closing of the bulwark door 1. The shielding deck 2 is provided with several through holes 21, which can be circular, square, hexagonal, or strip-shaped. In this embodiment, the through holes 21 are preferably strip-shaped. The through holes can reduce the weight on the one hand, and allow rainwater on the deck of the ship to drain away through the through holes on the other hand. In addition, the through holes also make it easy to pull the shielding deck to close.
[0029] In some embodiments, the top surface of the shielding deck is provided with several anti-slip protrusions.
[0030] In some embodiments, a deck fixing bolt is also included. When the shielding deck is flipped and fitted to the front side of the bulwark door, the threaded end of the deck fixing bolt passes through the through hole on the shielding deck and engages with the threaded hole on the bulwark door to fix the shielding deck.
[0031] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A bulwark door structure for an aquaculture auxiliary vessel, characterized in that, include: The bulwark door and the shielding deck for obstructing the upper part of the stair passage on the deck are provided. The right side of the bulwark door is provided with a first hinge assembly for hinged to the bulwark, and the left side is provided with a door locking assembly. The shielding deck is located on the front side of the bulwark door, and its rear end is hinged to the lower end of the bulwark door through a second hinge assembly. The shielding deck can be flipped to fit against the front side of the bulwark door.
2. The bulwark door structure for an aquaculture auxiliary vessel according to claim 1, characterized in that, The shielding deck is provided with several through holes.
3. The bulwark door structure for an aquaculture auxiliary vessel according to claim 1 or 2, characterized in that, The first hinge assembly is provided in two parts. The first hinge assembly includes a first connecting plate, a second connecting plate with one end located between the two first connecting plates, a first bolt and a first nut. The first connecting plate is fixedly connected to the bulwark door body. One end of the first bolt passes through a through hole on the first connecting plate and the through hole on the second connecting plate and is threadedly connected to the first nut.
4. The bulwark door structure for an aquaculture auxiliary vessel according to claim 1, characterized in that, The door locking assembly includes an L-shaped pin, a first connecting lug, and a second connecting lug. The first connecting lug is fixedly connected to the bulwark door body, and the pin is inserted into the through hole on the first connecting lug and the through hole on the second connecting lug.
5. The bulwark door structure for an aquaculture auxiliary vessel according to claim 1, characterized in that, The second hinge assembly has two components. The second hinge assembly includes a third connecting plate, a fourth connecting plate with one end located between the two third connecting plates, a second bolt, and a second nut. The third connecting plate is fixedly connected to the shielding deck. The bottom of the bulwark door is provided with an installation groove. The fourth connecting plate is located in the installation groove and is fixedly connected to the bulwark door. One end of the second bolt passes through a through hole on the third connecting plate and the through hole on the fourth connecting plate and is threadedly connected to the second nut.
6. The bulwark door structure for an aquaculture auxiliary vessel according to claim 1, characterized in that, Both the bulwark door and the shielding deck are made of aluminum or aluminum alloy, and the shielding deck is provided with several strip-shaped through holes.
7. The bulwark door structure for an aquaculture auxiliary vessel according to claim 1, characterized in that, The top surface of the shielding deck is provided with several anti-slip protrusions.