Induction type hatch cover of bulk cargo ship
By installing sealing rings and adjustment structures on the hatch covers of bulk carriers, and utilizing the adsorption effect of magnets and connecting straps, the hatch covers can be automatically sealed, solving the problem of inadequate sealing of hatch covers under harsh sea conditions and ensuring cargo safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-13
AI Technical Summary
Modern bulk carrier hatch covers are difficult to seal effectively in rough sea conditions, causing seawater or rainwater to seep into the cargo hold and damage the cargo.
A sensor-operated hatch cover for bulk carriers was designed, employing a combination of sealing ring one and sealing ring two with an adjustable structure. Through the adsorption of magnets and connecting strips, the hatch cover achieves automatic sealing, and a lifting structure ensures accurate positioning and movement of the sealing rings, preventing misalignment.
It effectively prevents seawater or rainwater from seeping into the cargo hold, reducing unnecessary losses, improving the sealing and stability of the hatch cover, and ensuring cargo safety.
Smart Images

Figure CN223990134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bulk carrier technology, specifically to a sensor-activated hatch cover for bulk carriers. Background Technology
[0002] Bulk carriers, also known as dry bulk carriers or bulk cargo ships in technical terms, are vessels specifically designed for transporting large quantities of unpackaged bulk cargo, including coal, ore, grain, and cement. Bulk carriers are optimized for the characteristics of bulk cargo in their design, structure, and operation to ensure transportation efficiency and safety. Hatch covers are a key component of bulk carriers, primarily used to cover cargo hatches to protect cargo from seawater, rain, and other external factors. Modern bulk carrier hatch covers generally employ power-driven devices, enabling automatic or semi-automatic opening and closing operations after a command is issued from the control platform. Hatch cover closure typically involves a sensing system. After the control platform issues a closing command, the sensing system detects the position and status of the hatch cover, ensuring it closes in the correct position and under safe conditions. However, most hatch cover surfaces lack a sealing structure, making it difficult to protect the joints during closure. This can lead to seawater or rainwater seeping into the cargo hold in harsh sea conditions, damaging the cargo and increasing unnecessary losses. Utility Model Content
[0003] The purpose of this invention is to provide a sensor-operated hatch cover for bulk carriers to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a sensor-operated hatch cover for bulk carriers, comprising a hatch tube, a support plate fixedly connected to the outer surface of the hatch tube, a rotating plate rotatably connected inside the support plate, a hatch cover fixedly connected to one side of the rotating plate, a fixed ring fixedly connected to the outside of the hatch tube, a movable ring slidably connected to the outer surface of the hatch tube, an auxiliary ring fixedly connected above the movable ring, a sealing ring one and a sealing ring two provided inside the auxiliary ring, an adjustment structure connected inside the auxiliary ring, the adjustment structure being connected to the sealing ring one and the sealing ring two, a lifting structure rotatably connected outside the fixed ring, the lifting structure being connected to the hatch tube, the movable ring being threadedly connected to the outside of the lifting structure, the adjustment structure comprising a telescopic device, an L-shaped plate, a turntable, a magnet one and a magnet two, a connecting belt being driven externally to the turntable, a guide rod slidably connected inside the L-shaped plate, and a spring being sleeved on the guide rod.
[0005] As a further preferred embodiment of this technical solution, a motor is fixedly connected to one side of the support plate, the output shaft of the motor is connected to the rotating plate, and an electric valve is provided above the hatch.
[0006] As a further preferred embodiment of this technical solution, the first magnet is fixedly connected to one side of the first sealing ring, the second magnet is fixedly connected to one side of the second sealing ring, the telescopic device is fixedly connected to the outside of the auxiliary ring, and one end of the telescopic device is connected to the second sealing ring.
[0007] As a further preferred embodiment of this technical solution, the L-shaped plate is fixedly connected to the outside of the second sealing ring, one end of the guide rod is connected to the first sealing ring, and the first sealing ring is connected to the L-shaped plate through a spring.
[0008] As a further preferred embodiment of this technical solution, the turntable is rotatably connected within the auxiliary ring, one end of the connecting strip is connected to a first magnet, and the other end of the connecting strip is connected to a second magnet.
[0009] As a further preferred embodiment of this technical solution, the lifting structure includes a first threaded rod and a second threaded rod. The first threaded rod is rotatably connected to a fixed ring, and the second threaded rod is rotatably connected to a fixed ring. A driver is fixedly connected to the bottom end of the first threaded rod, and the driver is connected to the hatch pipe.
[0010] As a further preferred embodiment of this technical solution, the first threaded rod is externally connected to an anti-slip strip, the first threaded rod is connected to the second threaded rod through the anti-slip strip, and the movable ring is threadedly connected to the outside of the first threaded rod and the movable ring is threadedly connected to the outside of the second threaded rod.
[0011] This utility model provides a sensor-activated hatch cover for bulk carriers, which has the following advantages:
[0012] (1) This utility model sets up a sealing ring 1, a sealing ring 2 and an adjustment structure. The sealing ring 2 is pulled by the telescopic device. The sealing ring 2 will pull the connecting belt through the magnet 2. The connecting belt will rotate on the surface of the turntable. Then the magnet 1 will drive the sealing ring 1 to move through the action of the connecting belt. When the sealing ring 1 moves, the guide rod will slide in the L-shaped plate and the spring will deform accordingly. The hatch cover can be flipped accordingly. The hatch cover, through the cooperation between the telescopic device, the connecting belt and the spring, enables the sealing ring 1 and the sealing ring 2 to achieve the function of relative movement, which facilitates the sealing treatment of the connection between the hatch cover and the hatch pipe, avoids the phenomenon of seawater or rainwater seeping into the cargo hold under bad sea conditions, prevents damage to the cargo, and reduces unnecessary losses.
[0013] (2) By setting up a lifting structure, the first threaded rod is driven to rotate by a driver. The first threaded rod is connected to the second threaded rod through an anti-slip strip. The first threaded rod and the second threaded rod will rotate synchronously, and then the moving ring will slide on its surface, so that the moving ring and the auxiliary ring can slide on the surface of the hatch tube. When the hatch cover and the hatch tube are closed, the sealing ring one and the sealing ring two can be moved to their connection point, so as to avoid the misalignment of the sealing ring one and the sealing ring two during sealing. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a three-dimensional structural diagram of the hatch tube of this utility model;
[0016] Figure 3 This is a three-dimensional structural diagram of the adjustment structure of this utility model;
[0017] Figure 4 This is a three-dimensional structural diagram of the lifting structure of this utility model;
[0018] In the diagram: 1. Hatch pipe; 2. Support plate; 3. Turning plate; 4. Hatch cover; 5. Fixing ring; 6. Moving ring; 7. Auxiliary ring; 8. Adjustment structure; 801. Expansion joint; 802. L-shaped plate; 803. Turntable; 804. Connecting belt; 805. Magnet one; 806. Magnet two; 807. Guide rod; 808. Spring; 9. Lifting structure; 901. First threaded rod; 902. Second threaded rod; 903. Anti-slip belt; 904. Driver; 10. Electric valve; 11. Motor; 12. Sealing ring one; 13. Sealing ring two. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0020] This utility model provides a technical solution: such as Figure 1 and Figure 4As shown in this embodiment, a bulk carrier sensor-operated hatch cover includes a hatch pipe 1, a support plate 2 fixedly connected to the outer surface of the hatch pipe 1, a rotating plate 3 rotatably connected inside the support plate 2, a hatch cover 4 fixedly connected to one side of the rotating plate 3, a fixing ring 5 fixedly connected to the outside of the hatch pipe 1, a moving ring 6 slidably connected to the outer surface of the hatch pipe 1, an auxiliary ring 7 fixedly connected above the moving ring 6, a sealing ring 12 and a sealing ring 13 provided inside the auxiliary ring 7, and an adjustment structure 8 connected inside the auxiliary ring 7. The adjusting structure 8 is connected to the sealing ring 12 and the sealing ring 2 13. The fixed ring 5 is rotatably connected to the lifting structure 9, which is connected to the hatch pipe 1. The moving ring 6 is threadedly connected to the outside of the lifting structure 9. The adjusting structure 8 includes a telescopic device 801, an L-shaped plate 802, a turntable 803, a magnet 1 805 and a magnet 2 806. The turntable 803 is externally connected to a connecting belt 804. The L-shaped plate 802 is internally connected to a guide rod 807, and the guide rod 807 is externally fitted with a spring 808.
[0021] like Figure 1 and Figure 3 As shown, a motor 11 is fixedly connected to one side of the support plate 2, and the output shaft of the motor 11 is connected to the rotating plate 3. An electric valve 10 is provided above the hatch 4. Magnet 1 805 is fixedly connected to one side of sealing ring 12, magnet 2 806 is fixedly connected to one side of sealing ring 2 13, telescopic device 801 is fixedly connected to the outside of auxiliary ring 7, one end of telescopic device 801 is connected to sealing ring 2 13, L-shaped plate 802 is fixedly connected to the outside of sealing ring 2 13, one end of guide rod 807 is connected to sealing ring 12, sealing ring 12 is connected to L-shaped plate 802 through spring 808, turntable 803 is rotatably connected inside auxiliary ring 7, one end of connecting strap 804 is connected to magnet 1 805, and the other end of connecting strap 804 is connected to magnet 2 806.
[0022] By setting magnet 805 and magnet 806, when the expansion joint 801 applies a pushing force to the sealing ring 13, the sealing ring 12 will reset under the action of spring 808 when it loses resistance. When the sealing ring 12 and the sealing ring 13 are in contact, magnet 805 and magnet 806 will attract each other, thereby improving the stability of the connection between the sealing ring 12 and the sealing ring 13 and preventing the sealing ring 12 and the sealing ring 13 from loosening under the influence of external forces.
[0023] like Figure 4As shown, the lifting structure 9 includes a first threaded rod 901 and a second threaded rod 902. The first threaded rod 901 is rotatably connected to the fixed ring 5, and the second threaded rod 902 is rotatably connected to the fixed ring 5. The bottom end of the first threaded rod 901 is fixedly connected to a driver 904, which is connected to the hatch pipe 1. An anti-slip belt 903 is externally connected to the first threaded rod 901, and the first threaded rod 901 is connected to the second threaded rod 902 through the anti-slip belt 903. A moving ring 6 is threadedly connected to the outside of the first threaded rod 901 and the outside of the second threaded rod 902.
[0024] By setting an anti-slip strip 903, the first threaded rod 901 is driven to rotate by the driver 904. The first threaded rod 901 is connected to the second threaded rod 902 through the anti-slip strip 903. The first threaded rod 901 and the second threaded rod 902 will rotate synchronously, so that the moving ring 6 can move evenly on the surface of the hatch tube 1, avoiding the phenomenon of jamming when the moving ring 6 moves.
[0025] This utility model provides a sensor-activated hatch cover for bulk carriers, the specific working principle of which is as follows:
[0026] When the hatch cover is unfolded, the telescopic device 801 applies a pulling force to the sealing ring 13. The sealing ring 13 then pulls the connecting belt 804 via the magnet 806, causing the connecting belt 804 to rotate on the surface of the turntable 803. The magnet 805 then moves the sealing ring 12 via the connecting belt 804. As the sealing ring 12 moves, the guide rod 807 slides within the L-shaped plate 802, and the spring 808 deforms accordingly. When the sealing ring 12 and the sealing ring 12... When ring 2 13 moves to a specific position, the first threaded rod 901 is driven to rotate by the driver 904. The first threaded rod 901 is connected to the second threaded rod 902 through the anti-slip strip 903. The first threaded rod 901 and the second threaded rod 902 will rotate synchronously. Then the moving ring 6 will slide on its surface. When the moving ring 6 and the auxiliary ring 7 are disengaged from the position of the hatch cover 4, the hatch cover 4 is unlocked by the electric valve 10, and the motor 11 drives the hatch cover 4 to flip with the rotating plate 3.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bulk carrier induction hatch cover comprising a hatch pipe (1), characterized in that: The outer surface of the hatch pipe (1) is fixedly connected with a support plate (2), the support plate (2) is rotatably connected with a rotating plate (3), one side of the rotating plate (3) is fixedly connected with a hatch cover (4), the outer surface of the hatch pipe (1) is fixedly connected with a fixed ring (5), the outer surface of the hatch pipe (1) is slidably connected with a moving ring (6), the upper side of the moving ring (6) is fixedly connected with an auxiliary ring (7), the auxiliary ring (7) is provided with a sealing ring one (12) and a sealing ring two (13), the auxiliary ring (7) is connected with an adjusting structure (8), the adjusting structure (8) is connected with the sealing ring one (12), the adjusting structure (8) is connected with the sealing ring two (13), the outer surface of the fixed ring (5) is rotatably connected with a lifting structure (9), the lifting structure (9) is connected with the hatch pipe (1), the moving ring (6) is threadedly connected outside the lifting structure (9), the adjusting structure (8) comprises an extender (801), an L-shaped plate (802), a rotating disc (803), a magnet one (805) and a magnet two (806), the rotating disc (803) is drivingly connected with a connecting belt (804), the L-shaped plate (802) is slidably connected with a guide rod (807), and the guide rod (807) is sleeved with a spring (808).
2. A bulk carrier induction hatch cover according to claim 1, characterized in that: One side of the support plate (2) is fixedly connected with a motor (11), the output shaft of the motor (11) is connected with the rotating plate (3), and the upper side of the hatch cover (4) is provided with an electric valve (10).
3. A bulk carrier induction hatch cover according to claim 1, characterized in that: The magnet one (805) is fixedly connected to one side of the sealing ring one (12), the magnet two (806) is fixedly connected to one side of the sealing ring two (13), the extender (801) is fixedly connected outside the auxiliary ring (7), and one end of the extender (801) is connected with the sealing ring two (13).
4. A bulk carrier induction hatch cover according to claim 1, characterized in that: The L-shaped plate (802) is fixedly connected outside the sealing ring two (13), one end of the guide rod (807) is connected with the sealing ring one (12), and the sealing ring one (12) is connected with the L-shaped plate (802) through the spring (808).
5. A bulk carrier induction hatch cover according to claim 1, characterized in that: The rotating disc (803) is rotatably connected inside the auxiliary ring (7), one end of the connecting belt (804) is connected with the magnet one (805), and the other end of the connecting belt (804) is connected with the magnet two (806).
6. A bulk carrier induction hatch cover according to claim 1, characterized in that: The lifting structure (9) comprises a first threaded rod (901) and a second threaded rod (902), the first threaded rod (901) is rotatably connected inside the fixed ring (5), the second threaded rod (902) is rotatably connected inside the fixed ring (5), the bottom end of the first threaded rod (901) is fixedly connected with a driver (904), and the driver (904) is connected with the hatch pipe (1).
7. A bulk carrier induction hatch cover according to claim 6, characterized in that: The first threaded rod (901) is drivingly connected with an anti-skid belt (903), the first threaded rod (901) is connected with the second threaded rod (902) through the anti-skid belt (903), the moving ring (6) is threadedly connected outside the first threaded rod (901), and the moving ring (6) is threadedly connected outside the second threaded rod (902).