A sealing door structure for ships

Abstract

This utility model discloses a sealing door structure for ships, relating to the field of waterproof sealing technology. It includes a door frame with hinges on its side walls. A door body is rotatably connected to the door frame via the hinges. A pin hole is provided on the inner side wall of the door frame. A gear is rotatably connected inside the door body, with racks meshing on both sides of the gear. Longitudinal pins are fixedly connected to the ends of the two racks. This utility model uses the gear and racks to drive the longitudinal pins into the pin holes of the door frame, while simultaneously using a linkage rod to drive the transverse pins to insert synchronously, achieving multi-directional door fixation. This resists door shaking caused by changes in external water pressure and prevents friction damage to the sealing strip between the door body and the door frame. Furthermore, the limiting block on the door sealing plate guides the longitudinal pins, further improving the pin positioning accuracy and ensuring that the sealing strip always fits tightly against the gap, maintaining good sealing performance over a long period.

Description

Technical Field

[0001] This utility model relates to the field of waterproof sealing technology, and in particular to a sealing door structure for ships. Background Technology

[0002] Ship cabin sealing doors are crucial structures for ensuring the watertightness, airtightness, and safety of a vessel. Their core design revolves around "sealing" and "pressure resistance." They typically utilize a steel frame and door panels, with oil-resistant and seawater-corrosion-resistant rubber or polyurethane sealing strips embedded along the edges. The pressure exerted when the door closes ensures these strips adhere tightly to the door frame, preventing the penetration of water, gas, or smoke. The door frame is rigidly connected to the hull bulkhead using welding or bolts, ensuring structural strength to withstand pressure differences between the inside and outside of the cabin, wave impacts, or collision loads. Doors are often equipped with observation windows, emergency unlocking mechanisms, and pressure indicators, balancing ease of operation with emergency safety. Some special-purpose sealing doors also incorporate fire-resistant and heat-insulating materials within the door panels to meet diverse protection needs.

[0003] Existing sealing door structures mostly rely on sealing strips on the outer edge of the door to achieve a seal. However, during ship navigation, once the sealing door drafts water, fluctuations in external water pressure cause the door to experience unstable external pressure. This pressure change causes the door to sway back and forth slightly and continuously, thus increasing frictional wear between the door and the door frame. Over time, this not only affects the fit precision between the door and the frame but also accelerates the excessive consumption of sealing materials such as sealing strips. This leads to decreased elasticity of the sealing strips and reduced adhesion of the sealing surface, ultimately significantly weakening the overall sealing performance of the sealing door and posing a potential threat to the ship's watertightness and safety. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art and to propose a sealing door structure for ships.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sealing door structure for ships, comprising a door frame, a hinge provided in the side wall of the door frame, a door body rotatably connected to the door frame via the hinge, a pin hole provided in the inner side wall of the door frame, a gear rotatably connected inside the door body, racks meshing on both sides of the gear, longitudinal pins fixedly connected to the ends of the two racks, the two longitudinal pins passing through the top and bottom ends of the door body respectively and being inserted into the pin hole, a linkage rod movably connected to the side wall of one of the longitudinal pins, a transverse pin fixedly connected to the end of the linkage rod, the transverse pin passing through one side of the door body and being inserted into the pin hole, and a sealing strip provided on the outer side wall of the door body.

[0006] Preferably, positioning screws are threaded at the four corners of the side of the door, and the door is detachably connected to a door sealing plate via the positioning screws.

[0007] Preferably, a rotating handle is fixedly connected to the center position of both sides of the gear.

[0008] Preferably, the surfaces of the door sealing plate and the door body are provided with circular holes, and a waterproof bushing is provided between the rotating handle and the circular hole.

[0009] Preferably, a limiting block is fixedly connected to the side wall of the door sealing plate, and the door sealing plate guides the longitudinal pin through the limiting block.

[0010] Preferably, the outer wall of the door frame and the surface of the door sealing plate are coated with an anti-rust coating.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, a gear and rack drive the longitudinal pin to insert into the pin hole of the door frame, while a linkage rod simultaneously drives the transverse pin to insert, achieving multi-directional fixation of the door body. This resists door shaking caused by changes in external water pressure and prevents friction damage to the sealing strip between the door body and the door frame. Furthermore, the limiting block on the door sealing plate guides the longitudinal pin, further improving the pin positioning accuracy and ensuring that the sealing strip always fits tightly against the gap, maintaining good sealing performance over a long period.

[0013] 2. In this utility model, the door body is detachably connected to the door sealing plate via positioning screws, facilitating the inspection and maintenance of the internal latch components; the rotating handles on both sides of the gear, in conjunction with the waterproof bushings at the round holes, provide both convenient operation and waterproofing. Simultaneously, the rust-proof coating on the outer wall of the door frame and the surface of the door sealing plate resists seawater corrosion, preventing structural rust from affecting the seal. The overall design balances ease of operation with corrosion resistance, extending the overall service life of the sealed door. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of a sealing door structure for ships. Figure 1 ;

[0015] Figure 2 This utility model provides a schematic diagram of the internal structure of a sealing door structure for ships. Figure 1 ;

[0016] Figure 3 This utility model provides a schematic diagram of the internal structure of a sealing door structure for ships. Figure 2 ;

[0017] Figure 4 This utility model provides a three-dimensional structural diagram of a sealing door structure for ships. Figure 2 .

[0018] Illustrations: 1. Door frame; 2. Rotating handle; 3. Door sealing plate; 4. Positioning screw; 5. Limiting block; 6. Round hole; 7. Gear; 8. Rack; 9. Horizontal pin; 10. Vertical pin; 11. Linkage rod; 12. Sealing strip; 13. Door body; 14. Pin hole; 15. Hinge. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a sealing door structure for ships, including a door frame 1. A hinge 15 is provided in the side wall of the door frame 1. The door frame 1 is rotatably connected to the door body 13 through the hinge 15. A pin hole 14 is opened in the inner side wall of the door frame 1. A gear 7 is rotatably connected inside the door body 13. A rack 8 is meshed on both sides of the gear 7. The ends of the two racks 8 are fixedly connected to longitudinal pins 10. The two longitudinal pins 10 pass through the top and bottom ends of the door body 13 respectively and are inserted into the pin hole 14. A linkage rod 11 is movably connected to the side wall of one of the longitudinal pins 10. A transverse pin 9 is fixedly connected to the end of the linkage rod 11. The transverse pin 9 passes through one side of the door body 13 and is inserted into the pin hole 14. A sealing strip 12 is provided on the outer side wall of the door body 13.

[0022] The specific setup and function of this embodiment are described in detail below. The sealing door structure achieves the sealing of the cabin by having the door body 13 close within the door frame 1. The door frame 1 is fixedly installed on the cabin body, and the door body 13 is rotatably connected to the door frame 1 via a hinge 15. A sealing strip 12 is added to the outer wall of the door body 13. When the door body 13 is closed inside the door frame 1, the sealing strip 12 seals the gap between the door frame 1 and the door body 13. After the door body 13 is closed, to prevent the sealing strip 12 from wearing out due to the door body 13 wobbling relative to the door frame 1, two sets of transverse pins 9 and longitudinal pins 10 are added inside the door body 13 to prevent wear. The door 13 is positioned to reduce the degree of shaking after the door 13 is closed. By controlling the gear 7, the two racks 8 are adjusted to move in the up and down directions respectively, so that the two longitudinal pins 10 are inserted into the door frame 1 respectively. At the same time, the connection position of the longitudinal pin 10 on one side is offset from that of the transverse pin 9. When the longitudinal pin 10 is inserted outward, the offset position between the transverse pin 9 and the longitudinal pin 10 gradually decreases, causing the linkage rod 11 to return to the horizontal state, so that the transverse pin 9 is inserted outward, thereby achieving the effect of fixing the door 13 in multiple directions, so as to resist changes in external water pressure, ensure the stability of the sealing strip 12 structure, and avoid excessive wear.

[0023] Example 2: Figure 2 and Figure 3 As shown, positioning screws 4 are threaded at the four corners of the side of the door body 13, and the door sealing plate 3 is detachably connected to the door body 13 via the positioning screws 4. Rotary handles 2 are fixedly connected to the center of both sides of the gear 7. The surfaces of the door sealing plate 3 and the door body 13 are provided with circular holes 6, and a waterproof bushing is provided between the rotary handle 2 and the circular hole 6. Limiting blocks 5 are fixedly connected to the side walls of the door sealing plate 3, and the door sealing plate 3 guides the longitudinal pin 10 through the limiting blocks 5. The outer side walls of the door frame 1 and the surface of the door sealing plate 3 are both coated with an anti-rust coating.

[0024] The overall effect of this embodiment is that by setting a door sealing plate 3 on the side wall of the door body 13, the door sealing plate 3 is installed in a detachable manner with the door body 13. The horizontal pin 9 and the vertical pin 10 are positioned by multiple internal limiting blocks 5. Rotating handles 2 are set on both sides of the gear 7. The rotation of the gear 7 inside the door body 13 is controlled by the rotating handles 2, thereby controlling the engagement of the horizontal pin 9 and the vertical pin 10 with the pin hole 14, so as to control the fixing effect of the door frame 1 and the door body 13. A rust-proof coating is added to the outside of the door frame 1 and the door sealing plate 3 to prevent the sealed door structure from being corroded by seawater and rusting, and to prevent rust from affecting the sealing performance.

[0025] The device's operation and working principle are as follows: The door frame 1 is fixed to the ship's cabin body. The door body 13 is rotatably connected to the door frame 1 via hinges 15. After closing, the sealing strip 12 on the outer wall of the door body 13 seals the gap between the two to achieve a basic seal. After closing, rotate the rotating handles 2 on both sides of the gear 7. The rotating handles 2 pass through the round holes 6 between the door sealing plate 3 and the door body 13. A waterproof bushing is provided between the round hole 6 and the rotating handle 2. Rotating the rotating handle 2 can drive the racks 8 on both sides to move up and down, so that the two longitudinal pins 10 pass through and insert from the top and bottom of the door body 13, respectively. The door frame 1 has a latch hole 14, and at the same time, the longitudinal latch 10 on one side pushes the transverse latch 9 through the linkage rod 11 to insert it into the latch hole 14 from one side of the door body 13, so as to fix the door body 13 in multiple directions to resist external water pressure and avoid shaking and wear of the sealing strip 12; the door sealing plate 3 is detachably connected to the corner of the side of the door body 13 by positioning screw 4. The limiting block 5 on the door sealing plate 3 guides the movement of the longitudinal latch 10, and the outer wall of the door frame 1 and the surface of the door sealing plate 3 are coated with anti-rust coating. The door sealing plate 3 and the door body 13 together ensure the stable operation of the internal latch structure.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A sealing door structure for ships, comprising a door frame (1), wherein a hinge (15) is provided in the side wall of the door frame (1), and a door body (13) is rotatably connected to the door frame (1) via the hinge (15), characterized in that: The inner sidewall of the door frame (1) is provided with a pin hole (14). The door body (13) is rotatably connected with a gear (7). Both sides of the gear (7) are meshed with racks (8). The ends of the two racks (8) are fixedly connected with longitudinal pins (10). The two longitudinal pins (10) pass through the top and bottom of the door body (13) respectively and are inserted into the pin hole (14). The sidewall of one of the longitudinal pins (10) is movably connected with a linkage rod (11). The end of the linkage rod (11) is fixedly connected with a transverse pin (9). The transverse pin (9) passes through one side of the door body (13) and is inserted into the pin hole (14). The outer sidewall of the door body (13) is provided with a sealing strip (12).

2. The sealing door structure for ships according to claim 1, characterized in that: The door body (13) is threaded with positioning screws (4) at the four corners of its side, and the door body (13) is detachably connected to a door sealing plate (3) via the positioning screws (4).

3. The sealing door structure for ships according to claim 2, characterized in that: Rotary handles (2) are fixedly connected to the center of both sides of the gear (7).

4. A sealing door structure for ships according to claim 3, characterized in that: The surfaces of the door sealing plate (3) and the door body (13) are provided with round holes (6), and a waterproof bushing is provided between the rotating handle (2) and the round hole (6).

5. A sealing door structure for ships according to claim 2, characterized in that: The side wall of the door sealing plate (3) is fixedly connected to a limiting block (5), and the door sealing plate (3) guides the longitudinal pin (10) to move through the limiting block (5).

6. A sealing door structure for ships according to claim 1, characterized in that: The outer wall of the door frame (1) and the surface of the door sealing plate (3) are both coated with an anti-rust coating.

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