Safety door arrangement for a ship engine room
By designing internal and external protective and auxiliary mechanisms in the ship's engine room canopy, the time for pirates to enter is extended, solving the problem that existing ship security doors cannot stop pirates and enhancing the safety of personnel on board.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
- Filing Date
- 2023-08-28
- Publication Date
- 2026-04-28
Smart Images

Figure CN117002676B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to protective devices. Background Technology
[0002] Ships are a general term for all kinds of vessels. They are means of transportation that can navigate or anchor in waterways for transport or operations, and vary in technical performance, equipment, and structural type according to different usage requirements.
[0003] A ship is a man-made means of transportation that primarily operates in water. Civilian vessels are generally called ships, military vessels are called warships, and small boats are called boats or dinghies; collectively, they are referred to as ships or naval vessels. Internally, they mainly include interior space, supporting structures, and drainage structures, and possess a propulsion system that utilizes external or internal energy sources. Their external shape is generally a streamlined envelope that helps overcome fluid resistance. Materials are constantly updated with technological advancements; early materials included natural materials such as wood, bamboo, and hemp, while modern materials primarily include steel, aluminum, fiberglass, acrylic, and various composite materials.
[0004] Currently, when ships encounter pirates, once pirates board the ship, there are no facilities to prevent pirates from entering the living quarters and engine room. There is only a passageway door, which is insufficient to stop or delay the pirates' entry. This does not provide the crew with time to raise the alarm or prepare to fight back or escape, making it easy for pirates to enter the living area and causing huge losses to the lives and property of the crew. Summary of the Invention
[0005] The purpose of this invention is to overcome the shortcomings of the lack of security doors in the living areas of ships, which cannot delay the entry of pirates, and to provide a security door device for the ship's engine room.
[0006] The technical solution to achieve the above objective is: a safety door device for the ship's engine room, including a cabin passageway, with an internal door at the entrance end of the cabin passageway, an internal protective mechanism inside the cabin passageway, an external protective mechanism connected to the outer wall of the cabin passageway, and an auxiliary mechanism inside the external protective mechanism.
[0007] Preferably, the internal protection mechanism includes a rotating shaft, a rotating door, a slot, a limiting plate, and a locking plate. The rotating shaft is rotatably connected to the cabin passageway. Multiple rotating doors are connected to the outer wall of the rotating shaft. A slot is provided at the bottom of the inner wall of the cabin passageway. Two staggered limiting plates are slidably connected to the inner wall of the cabin passageway.
[0008] Preferably, the outer protective mechanism includes an outer frame, a protective door, protective steel columns, a pin plate, a through hole, a pull block, a spring, a plug, a plug rod, a plug hole, and an L-shaped plate. The entrance end of the cabin passage is connected to the outer frame. The inner wall of the outer frame is rotatably connected to the protective door. Multiple protective steel columns are connected to the inner wall of the outer frame. The outer wall of the protective door is slidably connected to the pin plate. The outer wall of the pin plate has a through hole. The outer wall of the protective door is slidably connected to the pull block. The outer wall of the pull block is connected to a spring. One end of the spring is connected to the protective door. The outer wall of the pull block is connected to the plug. The outer wall of the plug rod has a plug hole. The outer wall of the plug is inserted into the plug hole. The inner surface of the outer frame is connected to an L-shaped plate.
[0009] Preferably, the auxiliary mechanism includes a connecting block, a square groove, a first compression switch, and a second compression switch. The protective steel column is energized, and both the first and second compression switches are electrically connected to the protective steel column. The outer surface of the protective door is connected to the connecting block, and a square groove is formed at the upper end of the connecting block. The inner wall of the square groove is connected to the first compression switch, and the inner wall of the L-shaped plate is connected to the second compression switch.
[0010] Preferably, the slot is located inside the rotation trajectory range of the rotating door.
[0011] Preferably, the pull block is located at the center of the protective door, which is made of two layers of steel plates and steel pipes. Multiple steel pipes are connected to the inner walls of the two layers of steel plates, and the outer walls of the two layers of steel plates are connected to each other.
[0012] Preferably, the inner surfaces of the L-shaped plate and the outer frame form a U-shaped groove, and the width of the U-shaped groove is equal to the width of the pin plate.
[0013] Preferably, the square groove is located below the pull block.
[0014] The beneficial effects of this invention are:
[0015] 1. Place the two limit plates staggered to allow pedestrians to pass through normally without obstructing their passage. Push the limit plates into the side closest to the revolving door. At this time, the card plate is directly above the card slot. Insert the card plate into the card slot so that the limit plates block the rotation of the revolving door, thereby prolonging the time to enter the cabin passage.
[0016] 2. When the protective door is closed, insert the latch plate into the U-shaped groove, pull the pull block outward, the pull block pulls the spring and moves the latch block out of the insertion hole, so that the latch rod can be inserted into the through hole and square groove, so that the latch rod fixes the latch plate, thereby fixing the protective door. Furthermore, the latch rod is completely submerged in the inside of the through hole. By using the pull block to be located in the center of the protective door, the latch rod can be located in the center position of the protective door, avoiding damage to the sides of the outer frame. The latch rod can be easily removed, away from the sides of the outer frame, prolonging the time to open the protective door, while the outer frame and protective steel column can increase the difficulty of damage.
[0017] 3. When the plug is inserted into the square groove, it will press the first pressure switch, and when the pin plate is inserted into the U-shaped groove, it will press the second pressure switch. When both the first and second pressure switches are pressed and activated, the protective steel column will be energized, causing the entire outer frame to carry current, further increasing the difficulty of touching the outer frame, thereby prolonging the time to open the outer frame and the protective door. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0019] Figure 2 This is a cross-sectional top view of the structure of the present invention;
[0020] Figure 3 This is a schematic diagram of the cross-sectional structure from the left.
[0021] Figure 4 This is an exploded structural diagram of the present invention;
[0022] Figure 5 yes Figure 2 Enlarged structural diagram at point A;
[0023] Figure 6 yes Figure 3 Enlarged structural diagram at point B;
[0024] Figure 7 yes Figure 3 Enlarged structural diagram at point C;
[0025] Figure 8 yes Figure 4 Enlarged structural diagram at point D;
[0026] Figure 9 yes Figure 4 A magnified structural diagram at point E in the middle.
[0027] 1. Cabin passageway; 2. Internal door; 3. Internal protection mechanism; 301. Rotating shaft; 302. Rotating door; 303. Slot; 304. Limiting plate; 305. Card plate; 4. External protection mechanism; 401. Outer frame; 402. Protective door; 403. Protective steel column; 404. Pin plate; 405. Through hole; 406. Pull block; 407. Spring; 408. Insert block; 409. Insert rod; 410. Insert hole; 411. L-shaped plate; 5. Auxiliary mechanism; 501. Connecting block; 502. Square groove; 503. First compression switch; 504. Second compression switch. Detailed Implementation
[0028] The technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] The invention will now be further described with reference to the accompanying drawings.
[0030] Reference Appendix Figure 1-9 The safety door device for the ship's engine room includes a cabin passageway 1, an internal door 2 at the entrance of the cabin passageway 1, an internal protection mechanism 3 inside the cabin passageway 1, an external protection mechanism 4 connected to the outer wall of the cabin passageway 1, and an auxiliary mechanism 5 inside the external protection mechanism 4.
[0031] Reference Appendix Figure 2-5 The inner protective mechanism 3 includes a rotating shaft 301, a rotating door 302, a slot 303, a limiting plate 304, and a locking plate 305. The rotating shaft 301 is rotatably connected to the cabin passage 1. Multiple rotating doors 302 are connected to the outer wall of the rotating shaft 301. A slot 303 is provided at the bottom of the inner wall of the cabin passage 1. Two staggered limiting plates 304 are slidably connected to the inner wall of the cabin passage 1. The slot 303 is located inside the rotation trajectory range of the rotating door 302.
[0032] In normal use, the two limiting plates 304 are placed offset to allow pedestrians to pass through normally without obstructing their passage. In the event of a pirate attack, the limiting plate 304 is pushed into the side closest to the rotating door 302. At this time, the locking plate 305 is located directly above the locking slot 303. The locking plate 305 is inserted into the locking slot 303, so that the limiting plate 304 blocks the rotation of the rotating door 302, thereby prolonging the time it takes for pirates to enter the cabin passageway 1.
[0033] Reference Appendix Figure 3-9 The outer protective mechanism 4 includes an outer frame 401, a protective door 402, protective steel columns 403, a pin plate 404, a through hole 405, a pull block 406, a spring 407, a plug block 408, a plug rod 409, a plug hole 410, and an L-shaped plate 411. The entrance end of the cabin passage 1 is connected to the outer frame 401. The inner wall of the outer frame 401 is rotatably connected to the protective door 402. Multiple protective steel columns 403 are connected to the inner wall of the outer frame 401. The outer wall of the protective door 402 is slidably connected to the pin plate 404. The outer wall of the pin plate 404 has a through hole 405. The outer wall of the protective door 402 is slidably connected to the pull block 406. A spring 407 is connected to the outer wall of the 06, one end of which is connected to the protective door 402. A plug 408 is connected to the outer wall of the pull block 406. A plug hole 410 is opened on the outer wall of the plug rod 409. The outer wall of the plug 408 is inserted into the plug hole 410. An L-shaped plate 411 is connected to the inner surface of the outer frame 401. The pull block 406 is located at the center of the protective door 402. The protective door 402 is made of two layers of steel plates and steel pipes. Multiple steel pipes are connected to the inner walls of the two layers of steel plates. The outer walls of the two layers of steel plates are connected to each other. The L-shaped plate 411 and the inner surface of the outer frame 401 form a U-shaped groove. The width of the U-shaped groove is equal to the width of the plug plate 404.
[0034] When the protective door 402 is closed, insert the latch plate 404 into the U-shaped groove, pull the pull block 406 outward, pull the spring 407 and drive the insert block 408 out of the insertion hole 410, so that the insert rod 409 can be inserted into the through hole 405 and the square groove 502, so that the insert rod 409 fixes the latch plate 404, thereby fixing the protective door 402. Furthermore, the insert rod 409 is completely submerged inside the through hole 405. With the pull block 406 located at the center of the protective door 402, the insert rod 409 can be located in the center position of the protective door 402, avoiding damage to the sides of the outer frame 401. The insert rod 409 can be easily removed, away from the sides of the outer frame 401, prolonging the time to open the protective door 402. The outer frame 401 and the protective steel column 403 can increase the difficulty of damage.
[0035] Reference Appendix Figure 3-9 The auxiliary mechanism 5 includes a connecting block 501, a square groove 502, a first compression switch 503, and a second compression switch 504. The protective steel column 403 is energized. The first compression switch 503 and the second compression switch 504 are electrically connected to the protective steel column 403. The outer surface of the protective door 402 is connected to the connecting block 501. The upper end of the connecting block 501 is provided with a square groove 502. The inner wall of the square groove 502 is connected to the first compression switch 503. The inner wall of the L-shaped plate 411 is connected to the second compression switch 504. The square groove 502 is located below the pull block 406.
[0036] When the plug 409 is inserted into the square slot 502, it will press the first pressure switch 503. When the plug plate 404 is inserted into the U-shaped slot, it will press the second pressure switch 504. When both the first pressure switch 503 and the second pressure switch 504 are pressed and activated, the protective steel column 403 will be energized, causing the entire outer frame 401 to carry current, further increasing the difficulty of touching the outer frame 401, thereby prolonging the time to open the outer frame 401 and the protective door 402.
[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A safety door device for a ship's engine room, comprising a cabin passageway (1), wherein the entrance end of the cabin passageway (1) is provided with an internal door (2), characterized in that, An inner protective mechanism (3) is provided inside the cabin passage (1), and an outer protective mechanism (4) is connected to the outer wall of the cabin passage (1). An auxiliary mechanism (5) is provided inside the outer protective mechanism (4). The outer protective mechanism (4) includes an outer frame (401), a protective door (402), protective steel columns (403), a pin plate (404), a through hole (405), a pull block (406), a spring (407), a plug block (408), a plug rod (409), a plug hole (410), and an L-shaped plate (411). The entrance end of the cabin passage (1) is connected to the outer frame (401). The inner wall of the outer frame (401) is rotatably connected to the protective door (402). The inner wall of the outer frame (401) is connected to multiple protective steel columns (403). The outer wall of the protective door (402) is slidably connected to... A latch plate (404) is connected, and a through hole (405) is opened on the outer wall of the latch plate (404). A pull block (406) is slidably connected to the outer wall of the protective door (402). A spring (407) is connected to the outer wall of the pull block (406). One end of the spring (407) is connected to the protective door (402). An insert block (408) is connected to the outer wall of the pull block (406). An insertion hole (410) is opened on the outer wall of the insert rod (409). The outer wall of the insert block (408) is inserted into the insertion hole (410). An L-shaped plate (411) is connected to the inner surface of the outer frame (401). The auxiliary mechanism (5) includes a connecting block (501), a square groove (502), a first squeeze switch (503), and a second squeeze switch (504). The protective steel column (403) is energized. The first squeeze switch (503) and the second squeeze switch (504) are electrically connected to the protective steel column (403). The outer surface of the protective door (402) is connected to the connecting block (501). The upper end of the connecting block (501) is provided with a square groove (502). The inner wall of the square groove (502) is connected to the first squeeze switch (503). The inner wall of the L-shaped plate (411) is connected to the second squeeze switch (504).
2. The safety door device for the ship's engine room as described in claim 1, characterized in that, The inner protective mechanism (3) includes a rotating shaft (301), a rotating door (302), a slot (303), a limiting plate (304), and a locking plate (305). The rotating shaft (301) is rotatably connected to the cabin passage (1). Multiple rotating doors (302) are connected to the outer wall of the rotating shaft (301). A slot (303) is provided at the bottom of the inner wall of the cabin passage (1). Two staggered limiting plates (304) are slidably connected to the inner wall of the cabin passage (1).
3. The safety door device for the ship's engine room as described in claim 2, characterized in that, The slot (303) is located inside the rotation trajectory range of the rotating door (302).
4. The safety door device for the ship's engine room as described in claim 1, characterized in that, The pull block (406) is located at the center of the protective door (402). The protective door (402) is made of two layers of steel plates and steel pipes. Multiple steel pipes are connected to the inner walls of the two layers of steel plates, and the outer walls of the two layers of steel plates are connected to each other.
5. The safety door device for the ship's engine room cabin according to claim 1, characterized in that, The inner surfaces of the L-shaped plate (411) and the outer frame (401) form a U-shaped groove, the width of which is equal to the width of the pin plate (404).
6. The safety door device for the ship's engine room as described in claim 1, characterized in that, The square groove (502) is located below the pull block (406).
Citation Information
Patent Citations
Marinely prevent pirate steel door
CN207843227U