A multiple anti-theft locking ship hatch cover
By employing a double-locking structure and mechanical linkage design, the problem of insufficient anti-theft performance of ship hatch covers has been solved, achieving a stable and reliable locking effect, reducing manual intervention, and improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU SHENPU MARINE EQUIP CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-06-16
AI Technical Summary
Existing ship hatch covers lack sufficient anti-theft capabilities and are easily damaged by criminals, leading to cargo theft and economic losses for ship owners.
It adopts a double locking structure, which achieves locking through mechanical linkage, including the meshing connection of the first gear, rack and pinion, combined with motor drive, to ensure a smooth and reliable locking process.
It significantly improves the anti-theft performance of the hatch cover, ensures locking stability, reduces manual intervention, improves operational efficiency, and reduces safety hazards.
Smart Images
Figure CN224361335U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ship hatch cover technology, and specifically discloses a ship hatch cover with multiple anti-theft locking mechanisms. Background Technology
[0002] As vital water transport vehicles, the safety of ships is of paramount importance. Hatch covers, as key components of ships, not only bear the crucial responsibility of maintaining the weathertightness of cargo holds and preventing cargo damage, but also significantly impact the seaworthiness of the vessel. In the complex and ever-changing marine environment, ships face numerous challenges, such as harsh weather conditions, seawater corrosion, and potential human-caused damage.
[0003] Existing simple hatch covers rely solely on basic latches or buckles for locking, offering virtually no protection against deliberate vandalism. When ships are docked, inadequate hatch cover security can provide opportunities for criminals to steal cargo, resulting in significant financial losses for ship owners. Therefore, a multi-layered, anti-theft hatch cover is needed to address these issues. Utility Model Content
[0004] This invention proposes a multi-layered anti-theft lock for ship hatch covers. Through a double locking structure, the anti-theft performance of the hatch cover is greatly improved. The locking process is achieved through mechanical linkage, avoiding problems such as loosening and failure that may occur with a single locking method, reducing manual intervention and improving operational efficiency.
[0005] This utility model is implemented as follows: a multi-layered anti-theft lockable ship hatch cover, including a hatch and a cover, wherein the front end of the hatch is provided with a multi-level locking mechanism:
[0006] The multi-stage locking mechanism includes a first gear rotatably connected to the front end of the hatch, a first rack meshing with the outer wall of the first gear, a first insert rod fixedly connected to the outer wall of the first rack, a vertical plate fixedly connected to the front end of the hatch, a first insertion hole formed on the outer wall of the vertical plate, a horizontal plate fixedly connected to the front end of the hatch, a spring fixedly connected to the lower end of the horizontal plate, a second rack fixedly connected to the lower end of the spring, a second gear rotatably connected to the front end of the hatch and meshing with the second rack, a third rack meshing with the outer wall of the second gear, a second insert rod fixedly connected to the lower end of the third rack, and a second insertion hole formed on the outer wall of the first insert rod.
[0007] As a preferred embodiment of the multi-anti-theft lockable ship hatch cover of this utility model, the upper end of the hatch is fixedly connected to two mounting plates symmetrically distributed on the left and right, and a rotating shaft is rotatably connected between the two mounting plates. The hatch cover is fixedly connected to the outer wall of the rotating shaft, and a first motor with its output end fixedly connected to the rotating shaft is installed on the outer wall of one of the mounting plates.
[0008] As a preferred embodiment of the multi-anti-theft lockable ship hatch cover of this utility model, an L-shaped plate is fixedly connected to the front end of the hatch, and a second motor with its output end fixedly connected to the first gear is installed on the outer wall of the L-shaped plate.
[0009] As a preferred embodiment of the multi-layered anti-theft lockable ship hatch cover of this utility model, the lower end of the second rack is inclined.
[0010] As a preferred embodiment of the multi-layered anti-theft lockable ship hatch cover of this utility model, the rear ends of the second rack, the third rack and the first rack are all fixedly connected to T-shaped sliders, and the plurality of T-shaped sliders are slidably connected to the front end of the hatch through T-shaped grooves.
[0011] As a preferred embodiment of the multi-layered anti-theft lockable ship hatch cover of this utility model, the upper end of the second rack is fixedly connected to a limiting rod, and the upper end of the limiting rod passes through the horizontal plate and is slidably connected to the horizontal plate.
[0012] As a preferred embodiment of the multi-layered anti-theft lockable ship hatch cover of this utility model, the lower end of the hatch cover is fixedly connected with a sealing gasket that abuts against the hatch opening.
[0013] The beneficial effects of this utility model are:
[0014] (1) The double locking structure greatly improves the anti-theft performance of the hatch cover, effectively resisting the deliberate damage by criminals and ensuring the safety of the cargo in the cargo hold.
[0015] (2) The locking process is achieved through mechanical structure linkage, and the action is smooth and reliable, which ensures the stability of locking and avoids problems such as loosening and failure that may occur with a single locking method.
[0016] (3) The entire locking process can be automated through the drive components, which reduces manual intervention, improves operational efficiency, and also reduces safety hazards caused by improper manual operation. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0018] Figure 1 This is an overall structural diagram of a ship hatch cover with multiple anti-theft locking mechanisms according to this utility model.
[0019] Figure 2 This is a top view of the structure of this utility model.
[0020] Figure 3 This is a partial structural diagram of the present invention.
[0021] Figure 4 This is a right-side structural view of the present invention.
[0022] The markings in the diagram are: 1. Hatch; 2. Hatch cover; 3. Mounting plate; 4. Shaft; 5. First motor; 6. Vertical plate; 7. L-shaped plate; 8. Second motor; 9. First rack; 10. First insert rod; 11. First gear; 12. Second rack; 13. Second gear; 14. Third rack; 15. Horizontal plate; 16. Spring; 17. Limiting rod; 18. Second insert rod; 19. First insertion hole; 20. Second insertion hole. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0024] Please see Figure 1-4 A multi-layered anti-theft lockable hatch cover for ships includes a hatch 1 and a hatch cover 2. The front end of the hatch 1 is equipped with a multi-stage locking mechanism.
[0025] The multi-stage locking mechanism includes a first gear 11 rotatably connected to the front end of the hatch 1, a first rack 9 meshing with the outer wall of the first gear 11, a first insert rod 10 fixedly connected to the outer wall of the first rack 9, a vertical plate 6 fixedly connected to the front end of the hatch 2, a first insertion hole 19 opened on the outer wall of the vertical plate 6, a horizontal plate 15 fixedly connected to the front end of the hatch 1, a spring 16 fixedly connected to the lower end of the horizontal plate 15, a second rack 12 fixedly connected to the lower end of the spring 16, a second gear 13 rotatably connected to the front end of the hatch 1 and meshing with the second rack 12, a third rack 14 meshing with the outer wall of the second gear 13, a second insert rod 18 fixedly connected to the lower end of the third rack 14, and a second insertion hole 20 opened on the outer wall of the first insert rod 10.
[0026] In this embodiment: when it is necessary to close the hatch 2 and achieve multiple locking, the hatch 2 is first closed on the hatch 1. Then, the relevant drive components are activated to make the first gear 11 rotate. The rotation of the first gear 11 will drive the first rack 9 that meshes with it to move. When the first rack 9 moves, it will drive the first insertion rod 10 to move synchronously, so that the first insertion rod 10 is inserted into the first insertion hole 19 on the vertical plate 6, completing the first locking.
[0027] During the insertion of the first insertion rod 10 into the first insertion hole 19, the first insertion rod 10 will contact the lower end of the second rack 12. Since the lower end of the second rack 12 is inclined, the first insertion rod 10 will push the second rack 12 to move upward, at which time the spring 16 is compressed. The upward movement of the second rack 12 will drive the second gear 13 meshing with it to rotate. The rotation of the second gear 13 will drive the third rack 14 meshing with it to move. The movement of the third rack 14 will drive the second insertion rod 18 to move synchronously, so that the second insertion rod 18 is inserted into the second insertion hole 20 on the first insertion rod 10, completing the second locking and achieving a multi-layered anti-theft locking effect.
[0028] As a technical optimization of this utility model, the upper end of the hatch 1 is fixedly connected to two symmetrically distributed mounting plates 3, and a rotating shaft 4 is rotatably connected between the two mounting plates 3. The hatch cover 2 is fixedly connected to the outer wall of the rotating shaft 4, and a first motor 5 with its output end fixedly connected to the rotating shaft 4 is installed on the outer wall of one of the mounting plates 3.
[0029] In this embodiment: the first motor 5 can drive the rotating shaft 4 to rotate, thereby driving the hatch 2 to open and close. The first motor 5 is a worm gear self-locking motor, which can lock the rotating shaft 4 and play a preliminary role in locking the hatch 2.
[0030] As a technical optimization of this utility model, an L-shaped plate 7 is fixedly connected to the front end of the hatch 1, and a second motor 8 with its output end fixedly connected to the first gear 11 is installed on the outer wall of the L-shaped plate 7.
[0031] In this embodiment, the first gear 11 can be driven to rotate by the second motor 8.
[0032] As a technical optimization of this utility model, the lower end of the second rack 12 is set with an inclined surface.
[0033] In this embodiment: when the first insertion rod 10 moves forward, its end will contact the inclined surface at the lower end of the second rack 12. The inclined surface can convert the horizontal thrust of the first insertion rod 10 into a force that moves the second rack 12 upward, thereby pushing the second rack 12 to compress the spring 16 upward, preparing for the subsequent insertion of the second insertion rod 18 into the second insertion hole 20.
[0034] As a technical optimization of this utility model, the rear ends of the second rack 12, the third rack 14 and the first rack 9 are all fixedly connected to T-shaped sliders, and the multiple T-shaped sliders are slidably connected to the front end of the hatch 1 through T-shaped grooves.
[0035] In this embodiment: during the process of the first gear 11 driving the first rack 9 to move and the second gear 13 driving the second rack 12 and the third rack 14 to move respectively, the cooperation between the T-shaped slider and the T-shaped groove can strictly limit the movement trajectory of the racks, ensuring that they can only move smoothly along the set direction (such as horizontal or vertical direction) and avoid deviation.
[0036] As a technical optimization of this utility model, the upper end of the second rack 12 is fixedly connected to the limiting rod 17, and the upper end of the limiting rod 17 passes through the horizontal plate 15 and is slidably connected to the horizontal plate 15.
[0037] In this embodiment, the limiting rod 17 ensures that the second rack 12 can move vertically up and down.
[0038] As a technical optimization of this utility model, the lower end of the hatch cover 2 is fixedly connected with a sealing gasket that abuts against the hatch 1.
[0039] In this embodiment, the connection between the hatch cover 2 and the hatch 1 can be sealed by a sealing gasket.
[0040] The working principle and usage process of this utility model are as follows: When it is necessary to close the hatch 2 and achieve multiple locking, firstly, the hatch 2 is closed on the hatch 1. Then, the relevant driving components are activated to make the first gear 11 rotate. The rotation of the first gear 11 will drive the first rack 9, which meshes with it, to move. When the first rack 9 moves, it will drive the first insertion rod 10 to move synchronously, so that the first insertion rod 10 is inserted into the first insertion hole 19 on the vertical plate 6, thus completing the first locking.
[0041] During the insertion of the first insertion rod 10 into the first insertion hole 19, the first insertion rod 10 will contact the lower end of the second rack 12. Since the lower end of the second rack 12 is inclined, the first insertion rod 10 will push the second rack 12 to move upward, at which time the spring 16 is compressed. The upward movement of the second rack 12 will drive the second gear 13 meshing with it to rotate. The rotation of the second gear 13 will drive the third rack 14 meshing with it to move. The movement of the third rack 14 will drive the second insertion rod 18 to move synchronously, so that the second insertion rod 18 is inserted into the second insertion hole 20 on the first insertion rod 10, completing the second locking and achieving a multi-layered anti-theft locking effect.
[0042] When it is necessary to open the hatch 2, the first gear 11 is rotated in the opposite direction by the drive component. The first gear 11 drives the first rack 9 and the first insert rod 10 to move in the opposite direction, so that the first insert rod 10 is gradually pulled out from the first insertion hole 19. During the process of the first insert rod 10 being pulled out, its thrust on the second rack 12 gradually disappears. The second rack 12 continues to return to its original position under the action of the spring 16, driving the second insert rod 18 to be pulled out from the second insertion hole 20, releasing the locked state, and then the hatch 2 can be opened.
[0043] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation 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.
[0044] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A multi-layered anti-theft lockable hatch cover for ships, comprising a hatch (1) and a hatch cover (2), characterized in that: The front end of the hatch (1) is provided with a multi-stage locking mechanism: The multi-stage locking mechanism includes a first gear (11) rotatably connected to the front end of the hatch (1), a first rack (9) meshing with the outer wall of the first gear (11), a first insert rod (10) fixedly connected to the outer wall of the first rack (9), a vertical plate (6) fixedly connected to the front end of the hatch cover (2), a first insertion hole (19) opened on the outer wall of the vertical plate (6), a horizontal plate (15) fixedly connected to the front end of the hatch (1), a spring (16) fixedly connected to the lower end of the horizontal plate (15), a second rack (12) fixedly connected to the lower end of the spring (16), a second gear (13) rotatably connected to the front end of the hatch (1) meshing with the second rack (12), a third rack (14) meshing with the outer wall of the second gear (13), a second insert rod (18) fixedly connected to the lower end of the third rack (14), and a second insertion hole (20) opened on the outer wall of the first insert rod (10).
2. The multi-layered anti-theft lockable ship hatch cover according to claim 1, characterized in that: The upper end of the hatch (1) is fixedly connected to two mounting plates (3) that are symmetrically distributed on the left and right. A rotating shaft (4) is rotatably connected between the two mounting plates (3). The hatch cover (2) is fixedly connected to the outer wall of the rotating shaft (4). A first motor (5) with its output end fixedly connected to the rotating shaft (4) is installed on the outer wall of one of the mounting plates (3).
3. A multi-layered anti-theft lockable ship hatch cover according to claim 1, characterized in that: An L-shaped plate (7) is fixedly connected to the front end of the hatch (1), and a second motor (8) with its output end fixedly connected to the first gear (11) is installed on the outer wall of the L-shaped plate (7).
4. A multi-layered anti-theft lockable ship hatch cover according to claim 1, characterized in that: The lower end of the second rack (12) is inclined.
5. A multi-layered anti-theft lockable ship hatch cover according to claim 1, characterized in that: The rear ends of the second rack (12), the third rack (14) and the first rack (9) are all fixedly connected to T-shaped sliders, and the multiple T-shaped sliders are slidably connected to the front end of the hatch (1) through T-shaped grooves.
6. A multi-layered anti-theft lockable ship hatch cover according to claim 1, characterized in that: The upper end of the second rack (12) is fixedly connected to a limiting rod (17), and the upper end of the limiting rod (17) passes through the horizontal plate (15) and is slidably connected to the horizontal plate (15).
7. A multi-layered anti-theft lockable ship hatch cover according to claim 1, characterized in that: The lower end of the hatch cover (2) is fixedly connected to a sealing gasket that abuts against the hatch opening (1).