Combined ship hatch cover stopper
By combining the positive and negative screws, sliders, and spring structure, the inconvenience caused by multiple studs and nuts in the existing technology is solved, and the hatch cover is conveniently positioned and the screws are prevented from loosening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PENGLAI ZHONGBAI JINGLU SHIPBUILDING CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-03
AI Technical Summary
Existing modular ship hatch cover limiting devices require multiple studs and nuts for limiting, which makes them inconvenient to use.
The design employs a combination of components such as positive and negative screws, rotating blocks, bearings, threaded blocks, guide blocks, and connecting blocks. The hatch cover is conveniently positioned through threaded movement, and the screws are prevented from loosening through the cooperation of sliders and springs.
It enables convenient positioning of the hatch cover, improves the ease of use of the device, and prevents the screw from loosening during long-term use.
Smart Images

Figure CN224448085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shipbuilding technology, specifically a combined ship hatch cover limiting device. Background Technology
[0002] Ship hatch cover limiting devices are key components that ensure the safe operation of hatch covers. They are mainly used to fix the position of hatch covers and prevent accidental movement or detachment. Modular ship hatch cover limiting devices are widely used in the shipbuilding industry and are an important safety device. For example, utility model patent CN213229049U discloses a combined ship hatch cover limiting device, including a cabin and a hatch cover. The hatch cover can be sealed to the cabin. The cabin has multiple mounting slots. A stud is vertically fixed to the bottom surface of the mounting slot. A sliding sleeve is fitted on the stud. A clip is fixed to the upper surface of the sliding sleeve. The clip is inverted L-shaped. Multiple fastening nuts are screwed to the top of the stud. The hatch cover is sealed to the cabin. The clip is fitted onto the stud through the sliding sleeve. Under the action of gravity, the top of the clip abuts against the upper surface of the hatch cover to prevent the hatch cover from shaking. A fastening nut is screwed onto the stud. The position of the fastening nut is rotated and adjusted until the fastening nut locks the sliding sleeve. Then another fastening nut is screwed on and locked above the first fastening nut to prevent the fastening nut from loosening due to vibration. However, in the existing technology, multiple studs and nuts are required to limit the hatch cover when the device is in use, making the device inconvenient to use. Therefore, improvements are needed. Utility Model Content
[0003] The purpose of this utility model is to provide a combined ship hatch cover limiting device, which solves the problem that when the device is in use, multiple studs and nuts are needed to limit the hatch cover, making the device inconvenient to use.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a combined ship hatch cover limiting device, comprising a ship cabin, a hatch cover contacting the upper end of the ship cabin, a hinge fixedly connected to the hatch cover, the hinge being fixedly connected to the ship cabin, a handle fixedly connected to the upper end of the hatch cover, a connecting plate fixedly connected to the outer side of the hatch cover, an elastic block fixedly connected to the lower end of the connecting plate, a fixed plate contacting the lower end of the connecting plate, the fixed plate contacting the elastic block, a fixed plate fixedly connected to the outer side of the ship cabin, a positive and negative screw rotatably connected inside the fixed plate, a rotating block fixedly connected to the left end of the positive and negative screw, the rotating block contacting the fixed plate, a threaded block threadedly connected to the outer side of the positive and negative screw, a connecting block fixedly connected to the upper end of the threaded block, a groove formed inside the elastic block, a limiting block slidably connected inside the groove, a connecting block connected to the end of the limiting block away from the groove, a slot formed inside the rotating block, and a limiting mechanism provided on the outer side of the fixed plate. By pulling the slider out of the slot, and then rotating the forward and reverse screws to make threaded movement with the threaded block, the movement of the threaded block drives the movement of components such as the limit block. The limit block moves into the slide groove, thereby limiting the hatch cover and making the device easy to use.
[0005] Preferably, a bearing is fixedly sleeved inside the fixing plate, and a positive and negative screw is fixedly sleeved inside the inner ring of the bearing. By designing the bearing, the positive and negative screws can be supported to rotate.
[0006] Preferably, a guide block is fixedly connected to the lower end of the threaded block, and the guide block is slidably connected to the fixed plate. By designing the guide block, the threaded block can be guided.
[0007] Preferably, the limiting mechanism includes a slider, which is slidably connected inside the slot. A support ring is fixedly connected to the end of the slider away from the slot. A connecting seat is fixedly connected to the outside of the fixing plate. A sliding groove is formed inside the connecting seat, and a sliding block is slidably connected inside the sliding groove. A spring is provided inside the connecting seat. The connecting seat is slidably connected to the support ring, and a sliding block is fixedly connected to the outside of the support ring. The connecting seat is slidably connected to the slider. By releasing the slider, the spring force pushes the slider and other components to move. The slider moves into the slot, thereby limiting the forward and reverse screws and preventing them from loosening after prolonged use.
[0008] Preferably, the outer side of the connecting seat is in contact with a sliding plate, and a sliding block is fixedly connected to the sliding plate. By designing the sliding plate, the sliding block can be moved.
[0009] Preferably, one end of the spring is fixedly connected to the support ring, and the other end of the spring is fixedly connected to the connecting seat. By designing the spring, the support ring has an elastic force.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. This utility model designs components such as positive and negative screws, rotating blocks, bearings, threaded blocks, guide blocks, and connecting blocks. Pulling the slider out of the slot, and then rotating the positive and negative screws to generate threaded motion with the threaded blocks, the movement of the threaded blocks drives the movement of components such as the limiting block, and the limiting block moves into the slide groove, thereby limiting the hatch cover and making the device easy to use.
[0012] 2. This utility model designs components such as a slider, support ring, connecting seat, sliding groove, sliding block, and sliding plate. When the slider is released, the elastic force of the spring pushes the slider and other components to move. The slider moves into the slot, thereby limiting the forward and reverse screws and preventing the forward and reverse screws from loosening after long-term use of the device. Attached Figure Description
[0013] Figure 1 The overall structure of this utility model is three-dimensional. Figure 1 ;
[0014] Figure 2 The overall structure of this utility model is three-dimensional. Figure 2 ;
[0015] Figure 3 This utility model Figure 1 Partial sectional perspective view of the structure;
[0016] Figure 4 This utility model Figure 1 A front sectional view;
[0017] Figure 5 This utility model Figure 4 Enlarged view of the fixing plate;
[0018] Figure 6 This utility model Figure 3 Enlarged view of the rotating block.
[0019] In the diagram: 1. Cabin; 2. Hatch cover; 3. Hinge; 4. Handle; 5. Connecting plate; 6. Elastic block; 7. Fixing plate; 8. Positive and negative screws; 9. Rotating block; 10. Bearing; 11. Threaded block; 12. Guide block; 13. Connecting block; 14. Slide groove; 15. Limiting block; 16. Slot; 17. Limiting mechanism; 171. Slider; 172. Support ring; 173. Connecting seat; 174. Sliding groove; 175. Sliding block; 176. Sliding plate; 177. Spring. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-6 A combined ship hatch cover limiting device includes a cabin 1, a hatch cover 2 that contacts the upper end of the cabin 1, a hinge 3 that is fixedly connected to the hatch cover 2, the hinge 3 being fixedly connected to the cabin 1, a handle 4 that is fixedly connected to the upper end of the hatch cover 2, a connecting plate 5 that is fixedly connected to the outer side of the hatch cover 2, an elastic block 6 that is fixedly connected to the lower end of the connecting plate 5, a fixed plate 7 that contacts the elastic block 6, a fixed plate 7 that is fixedly connected to the outer side of the cabin 1, a positive and negative screw 8 that is rotatably connected inside the fixed plate 7, a rotating block 9 that is fixedly connected to the left end of the positive and negative screw 8, the rotating block 9 contacting the fixed plate 7, a bearing 10 that is fixedly sleeved inside the fixed plate 7, and the positive and negative screw 8 that is fixedly sleeved inside the inner ring of the bearing 10. By designing the bearing 10, the positive and negative screw 8 can be supported to rotate. A threaded block 11 is connected by a thread, and a guide block 12 is fixedly connected to the lower end of the threaded block 11. The guide block 12 is slidably connected to the fixed plate 7. By designing the guide block 12, the threaded block 11 can be guided. A connecting block 13 is fixedly connected to the upper end of the threaded block 11. A sliding groove 14 is opened inside the elastic block 6. A limit block 15 is slidably connected inside the sliding groove 14. The end of the limit block 15 away from the sliding groove 14 is connected to the block 13. A slot 16 is opened inside the rotating block 9. A limit mechanism 17 is provided on the outside of the fixed plate 7. By pulling the slider 171 out of the slot 16, and then rotating the positive and negative screws 8, the threaded block 11 is moved. The movement of the threaded block 11 drives the limit block 15 and other components to move. The limit block 15 moves into the sliding groove 14, thereby limiting the hatch cover 2 and making the device easy to use.
[0022] Please see Figure 6 The limiting mechanism 17 includes a slider 171. The slider 171 is slidably connected inside the slot 16. A support ring 172 is fixedly connected to the end of the slider 171 away from the slot 16. A connecting seat 173 is fixedly connected to the outside of the fixing plate 7. A sliding groove 174 is opened inside the connecting seat 173. A sliding block 175 is slidably connected inside the sliding groove 174. A sliding plate 176 contacts the outside of the connecting seat 173. A sliding block 175 is fixedly connected to the sliding plate 176. By designing the sliding plate 176, the sliding block 175 can be moved.
[0023] Please see Figure 6A spring 177 is installed inside the connecting seat 173. One end of the spring 177 is fixedly connected to the support ring 172, and the other end of the spring 177 is fixedly connected to the connecting seat 173. By designing the spring 177, the support ring 172 has an elastic force. The connecting seat 173 is slidably connected to the support ring 172. A sliding block 175 is fixedly connected to the outside of the support ring 172. The connecting seat 173 is slidably connected to the slider 171. By releasing the slider 171, the elastic force of the spring 177 pushes the slider 171 and other components to move. The slider 171 moves into the slot 16, thereby limiting the positive and negative screws 8 and preventing the positive and negative screws 8 from loosening after long-term use of the device.
[0024] The specific implementation process of this utility model is as follows: When the device is in use, the sliding plate 176 is moved upward, the sliding plate 176 moves upward, causing the sliding block 175 to move upward, the sliding block 175 moves upward, causing the support ring 172 to move upward, the support ring 172 moves upward, causing the slider 171 to move upward, the support ring 172 moves upward, causing the spring 177 to be compressed, the slider 171 moves upward and moves out of the slot 16, and then the rotating block 9 is rotated, the rotating block 9 rotates, causing the positive and negative screws 8 to rotate, the positive and negative screws 8 rotate and cause the threaded block 11 to have a threaded movement, thereby causing the threaded block 11 to have a relative displacement, the threaded block 11 moves, causing the guide block 12 and the connecting block 13 to move, the connecting block 13 moves, causing the limiting block 15 to move, the limiting block 15 moves into the slide groove 14, thereby limiting the hatch cover 2, making the device easy to use;
[0025] When the forward and reverse screws 8 need to be limited, the sliding plate 176 is released, and the elastic force of the spring 177 pushes the support ring 172 to move. The movement of the support ring 172 drives the sliding block 175 and the slider 171 to move. The movement of the sliding block 175 drives the sliding plate 176 to move, and the slider 171 moves into the slot 16, thereby limiting the forward and reverse screws 8 and preventing the forward and reverse screws 8 from loosening after long-term use of the device.
[0026] 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 combined ship hatch cover stopper device comprising a ship hatch (1), characterized in that: The upper end of the cabin (1) is in contact with a hatch cover (2), and a hinge (3) is fixedly connected to the hatch cover (2). The hinge (3) is fixedly connected to the cabin (1). A handle (4) is fixedly connected to the upper end of the hatch cover (2). A connecting plate (5) is fixedly connected to the outer side of the hatch cover (2). An elastic block (6) is fixedly connected to the lower end of the connecting plate (5). A fixing plate (7) is in contact with the lower end of the connecting plate (5). The fixing plate (7) is in contact with the elastic block (6). A fixing plate (7) is fixedly connected to the outer side of the cabin (1). A positive and negative screw (8) is rotatably connected inside the fixing plate (7). A rotating block (9) is fixedly connected to the left end of the positive and negative screws (8). The rotating block (9) is in contact with the fixed plate (7). A threaded block (11) is threadedly connected to the outer side of the positive and negative screws (8). A connecting block (13) is fixedly connected to the upper end of the threaded block (11). A sliding groove (14) is provided inside the elastic block (6). A limiting block (15) is slidably connected inside the sliding groove (14). The end of the limiting block (15) away from the sliding groove (14) is connected to the block (13). A slot (16) is provided inside the rotating block (9). A limiting mechanism (17) is provided on the outer side of the fixed plate (7).
2. A combined ship hatch cover stop device according to claim 1, characterized in that: The fixed plate (7) is fitted with a bearing (10), and the inner ring of the bearing (10) is fitted with a positive and negative screw (8).
3. A combined ship hatch cover stop device according to claim 1, characterized in that: The lower end of the threaded block (11) is fixedly connected to a guide block (12), and the guide block (12) is slidably connected to the fixed plate (7).
4. A combined ship hatch cover stop device according to claim 1, characterized in that: The limiting mechanism (17) includes a slider (171), the slider (171) is slidably connected inside the slot (16), a support ring (172) is fixedly connected to one end of the slider (171) away from the slot (16), a connecting seat (173) is fixedly connected to the outside of the fixing plate (7), a sliding groove (174) is provided inside the connecting seat (173), a sliding block (175) is slidably connected inside the sliding groove (174), a spring (177) is provided inside the connecting seat (173), the connecting seat (173) is slidably connected to the support ring (172), a sliding block (175) is fixedly connected to the outside of the support ring (172), and the connecting seat (173) is slidably connected to the slider (171).
5. A combined ship hatch cover stop device according to claim 4, characterized in that: The outer side of the connecting seat (173) is in contact with a sliding plate (176), and a sliding block (175) is fixedly connected to the sliding plate (176).
6. A combined ship hatch cover stop device according to claim 4, characterized in that: One end of the spring (177) is fixedly connected to the support ring (172), and the other end of the spring (177) is fixedly connected to the connecting seat (173).