Airtight door for channel equipment of roll-on-roll-off ship

Abstract

The utility model discloses an airtight door for channel equipment of a roll-on-roll-off ship, which relates to the field of roll-on-roll-off equipment and comprises an inclined ramp, a door body and a horizontal channel, the door body is arranged between the inclined ramp and the horizontal channel, the door body is hinged with the horizontal channel through a slotted hole hinge, and a sealing component is arranged on the door body. A door frame is arranged on the horizontal channel, the door body is matched with the door frame, the door body and the door frame are obliquely arranged, a push-pull device is installed in the horizontal channel, one end of the push-pull device is connected with a sliding block, a supporting connecting rod is hinged to the sliding block, and the supporting connecting rod is hinged to the door body. According to the airtight door for the roll-on-roll-off ship channel equipment, extrusion sealing can be carried out by fully utilizing the dead weight of the door, the airtight door is high in airtightness, good in sealing effect, safe, stable and reliable, simple in structure and easy to maintain, meanwhile, the design of no threshold protruding out of the ground is achieved, passing and transportation of vehicles or goods cannot be hindered, and applicability is high.

Description

Technical Field

[0001] The utility model relates to the field of roll-on / roll-off equipment, in particular to an airtight door used for roll-on / roll-off ship passage equipment. Background Art

[0002] When a ro-ro ship is sailing, for safety reasons, an airtight door is installed at the passage. At present, the door panels and door frames of airtight doors on the market are vertically arranged, and the sealing is achieved by fixing a rubber sealing ring around the door body and pressing it against the door frame; there is a lack of an airtight door that can use the door's own weight to press the rubber sealing ring to enhance the sealing performance. Utility Model Content

[0003] In view of the above-mentioned deficiencies that currently exist, the utility model provides an airtight door for roll-on / roll-off ship passage equipment, which can make full use of the door's own weight to perform extrusion sealing, has strong airtightness, good sealing effect, is safe, stable and reliable, has a simple structure, is easy to maintain, and at the same time realizes a design of a threshold without protruding from the ground, which will not hinder the passage and transportation of vehicles or goods and has strong applicability.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the utility model adopts the following technical scheme:

[0005] An airtight door for a ro-ro ship passage equipment comprises an inclined ramp, a door body and a horizontal passage, wherein the door body is arranged between the inclined ramp and the horizontal passage, the door body is hinged to the horizontal passage through an oblong hole hinge, a sealing assembly is provided on the door body, a door frame is provided on the horizontal passage, the door body and the door frame are cooperatively arranged, the door body and the door frame are both inclinedly arranged, a push-pull device is installed in the horizontal passage, one end of the push-pull device is connected to a slider, a support connecting rod is hinged to the slider, and the support connecting rod is hinged to the door body.

[0006] According to one aspect of the utility model, a lower latch is provided on the door body, and a lower wedge groove is provided on the inclined ramp. When the door body is completely closed, the lower latch is inserted into the lower wedge groove.

[0007] According to one aspect of the utility model, the sealing assembly includes a sealing gasket and a sealing strip, which are respectively fixed around the door body, and a cavity is provided in the sealing strip.

[0008] According to one aspect of the utility model, gaskets are provided on the door frame and the inclined ramp, and when the door body is closed, the sealing assembly is in compression contact with the gasket.

[0009] According to one aspect of the utility model, a pad and a wedge slot box are provided on the inclined ramp, the door body is arranged between the door frame and the pad, a gasket is fixed on the pad, and a lower wedge slot is provided in the wedge slot box.

[0010] According to one aspect of the utility model, a guide rail is fixed in the horizontal channel, and the slider is slidably connected to the guide rail.

[0011] According to one aspect of the utility model, a safety locking device is installed in the horizontal channel, and the safety locking device includes a telescopic device and a safety latch, which are connected. A safety card plate is fixed on the slider, and the safety latch is arranged on one side of the safety card plate.

[0012] According to one aspect of the utility model, the safety locking device also includes a guide groove plate and a support card plate, and the safety card plate is arranged between the guide groove plate and the support card plate. When the door body is fully opened, the safety pin passes through the guide groove plate and is connected between the support card plate and the safety card plate.

[0013] According to one aspect of the utility model, the door body is provided with a side wedge block, the door frame is provided with a side stopper, the side stopper is provided with a side wedge groove, and the side wedge block is cooperatively connected with the side wedge groove.

[0014] According to one aspect of the utility model, the door body is also provided with a telescopic rod, a side latch and a slot, the telescopic rod is connected to the latch, and the door frame is provided with a side slot, and the latch is driven by the telescopic rod to be inserted into the slot and the side slot in sequence to lock the door body and the door frame.

[0015] The advantages of the implementation of the utility model are as follows: when the door panel is closed, since the door panel (channel door frame, channel threshold) is tilted, the deadweight of the door panel can be used to squeeze the sealing pad, the first sealing strip, and the second sealing strip. At the same time, since the first sealing strip and the second sealing strip are provided with cavities, the first V-shaped protrusion is deformed after being squeezed and contacted with the channel door frame, and the second V-shaped protrusion is deformed after being squeezed and contacted with the channel threshold, so that the top, sides, and bottom of the door panel can be better sealed, and the sealing performance is excellent; in this way, the airtight door sealing structure has strong airtightness, is safe, stable and reliable, and has a simple overall structure. By setting the auxiliary sealing strip and the auxiliary V-shaped protrusion to be squeezed and contacted with the channel door frame, the present structure can further enhance the sealing performance and achieve a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the door closing process of the utility model;

[0019] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the door body of the utility model;

[0021] Figure 5 for Figure 3 The local structure of Figure Ⅰ ;

[0022] Figure 6 for Figure 3 The local structure of Figure II ;

[0023] Figure 7 It is a partial structural schematic diagram of the utility model.

[0024] The names corresponding to the serial numbers in the figure are as follows:

[0025] 1. Inclined ramp; 2. Horizontal passage; 3. Door frame; 4. Gasket; 5. Door body; 6. Oblong hole hinge; 7. Sealing gasket; 8. Sealing strip; 9. Push-pull device; 10. Slider; 11. Support connecting rod; 12. Cavity; 13. Pad; 14. Lower wedge groove; 15. Guide rail; 16. Auxiliary sealing strip; 17. Safety latch; 18. Guide groove plate; 19. Support card plate; 20. Side wedge block; 21. Side stopper; 22. Side wedge groove; 23. Telescopic rod; 24. Side latch; 25. Notch; 26. Side slot; 27. Lower latch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] Embodiment 1

[0028] like Figure 1 - Figure 6As shown, an airtight door for a ro-ro ship passage equipment comprises an inclined ramp 1, a horizontal passage 2, a door frame 3, a stainless steel gasket 4, a door body 5, an oblong hole hinge 6, a sealing assembly, a push-pull device 9, a slider 10, and a supporting connecting rod 11. The inclined ramp 1 and the horizontal passage 2 are a whole passage for cars or goods to enter and exit on a ro-ro ship. The inclined ramp 1 is inclined at an angle to the horizontal direction, and the inclination angle is 6 degrees to 9.5 degrees; a pad 13 is fixed on the inclined ramp 1, and the pad 13 is an inclined flat plate. The door frame 3 is located at the entrance and exit of the horizontal passage 2, and the two are a whole; the structural shapes of the door frame 3 and the door body 5 are adapted to each other; the gasket 4 is respectively fixed on the surface of the door frame 3 and the surface of the pad 13, and is used for extrusion sealing with the sealing assembly. The door body 5 is arranged between the inclined ramp 1 and the horizontal channel 2, and the door body 5 is arranged between the door frame 3 and the pad 13; the door body 5 is a conventional structure, and the top of the door body 5 is hinged to the horizontal channel 2 through an oblong hole hinge 6; the door body 5 and the door frame 3 are both inclined at an angle to the vertical direction, and the inclination angle is 15 degrees, so that it is convenient to use the dead weight of the door body 5 to squeeze the sealing component and enhance the sealing effect. The sealing component includes a sealing gasket 7 and a sealing strip 8, each with two groups, wherein the sealing gasket 7 is fixed on the left and right sides of the door body 5, and the sealing strip 8 is respectively fixed on the top side of the door body 5 and the bottom of the door body 5, so that the sealing of the top, both sides and bottom of the airtight door can be guaranteed; the sealing strip 8 is provided with a cavity 12, which is convenient for the extrusion and deformation of the sealing strip 8, and the sealing effect is better. The push-pull device 9 adopts a pure electric cylinder and is fixedly installed above the inner wall of the horizontal channel 2; the slider 10 is fixed to the protruding end of the push-pull device 9; the bottom end of the support connecting rod 11 is hinged to the slider 10 and the top end is hinged to the door body 5, and the top end of the support connecting rod 11 is extremely close to the oblong hole hinge 6.

[0029] In this embodiment, a guide rail 15 is fixed to the bottom of the inner wall of the horizontal channel 2. The guide rail 15 is vertically arranged, and the structure is not limited and can be a square plate. The slider 10 is slidably connected to the guide rail 15, and the structural shapes of the two are adapted to each other. The guide rail 15 facilitates the lifting and lowering guidance of the slider 10, making the structure more stable.

[0030] In this embodiment, a safety locking device is also installed in the horizontal channel 2, and the safety locking device includes a telescopic device, a safety latch 17, a guide slot plate 18, and a support card plate 19; wherein the telescopic device is connected to the safety latch 17, and the guide slot plate 18 and the support card plate 19 are both vertically arranged. A safety card plate is vertically fixed on the slider 10, and the safety card plate can be lifted and lowered between the guide slot plate 18 and the support card plate 19. When the door body 5 is fully opened upward, the safety latch 17 is driven to extend through the telescopic device, so that the safety latch 17 passes through the guide slot plate 18. At this time, the safety latch 17 abuts against the upper surface of the support card plate 19, and the safety card plate is located directly above the safety latch 17, and the two are in contact or have a certain distance; in this way, it can play a role of safety locking, avoid the risk of the door body 5 falling after being turned upward and opened by the push-pull device 9, etc., and can make the structure safer and more stable. The guide slot plate 18 is provided with corresponding holes for the safety pin 17 to pass through; the guide slot plate 18 not only guides the safety pin 17 but also stabilizes the structure. The support card plate 19 assists in supporting the safety pin 17, making the entire locking structure safer and more stable.

[0031] In this embodiment, side wedges 20 are fixed on the left and right sides of the door body 5, which are parallelepiped-shaped. Side stoppers 21 are fixed on the left and right sides of the door frame 3, and side wedge grooves 22 are provided on the side stoppers 21; the side stoppers 21 can be composed of a plurality of prisms, and the side wedge grooves 22 can be a wedge-shaped groove structure formed by combining two prisms, or can also be a wedge-shaped groove structure integrally opened on a prism. The side wedges 20 are connected with the side wedge grooves 22, and the structural shapes of the two are adapted to each other. When the door body 5 is fully closed, the side wedges 20 are inserted into the side wedge grooves 22 and are supported by the side stoppers 21; in this way, it can not only prevent the rubber of the sealing assembly from being over-compressed, but also enhance the sealing performance and stability of the structure.

[0032] In this embodiment, the door body 5 is also provided with a telescopic rod 23, a side latch 24, and a notch 25, each of which has two groups and is symmetrically arranged at the left and right ends of the door body 5; the left and right sides of the door frame 3 are provided with side slots 26. The telescopic rod 23 adopts an electric cylinder or an oil cylinder, which is fixedly installed on the inner wall of the door body 5, and the extended end of the telescopic rod 23 is fixed to the side latch 24; the side latch 24 is rectangular; the notch 25 is a square hole, which is opened on the side of the door body 5; the side slot 26 is a rectangular groove; the structural shapes and arrangement forms of the side latch 24, the notch 25, and the side slot 26 are adapted to each other. When the door body 5 is completely closed, the telescopic rod 23 is extended to drive the side latch 24 to be inserted into the notch 25 and the side slot 26 in sequence, so that the door body 5 and the door frame 3 are locked and fixed. The telescopic rod 23, the side latch 24, the notch 25, the side slot 26 and the like are arranged to lock and fix the door body 5 after it is closed to ensure the structural stability, and can also seal the middle part of the door body 5 to enhance the sealing effect.

[0033] In this embodiment, the sealing gasket 7 is V-shaped and made of rubber, and is used for sealing the left and right sides of the door body 5 or the entire airtight door. The sealing strip 8 is made of rubber and is used for sealing the top and bottom of the door body 5; the structure of the sealing strip 8 can be divided into a main body and a V-shaped protrusion. The main body is strip-shaped (the cross section is rectangular as a whole), which is completely filled and fixed in the door body 5, and the V-shaped protrusion is V-shaped (the cross section is V-shaped or an isosceles triangle as a whole), which protrudes or is exposed outside the door body 5, so that the sealing strip 8 is easy to be squeezed and deformed, and easy to seal.

[0034] In actual application, the inclined ramp 1, the horizontal passage 2, the door frame 3, and the door body 5 are all existing technologies and will not be described in detail.

[0035] In this embodiment, the full opening process of the airtight door is as follows: the push-pull device 9 contracts upward, driving the slider 10 to rise along the guide rail 15 (the safety card plate then rises between the guide groove plate 18 and the support card plate 19), driving the support connecting rod 11 to rise and rotate, thereby driving the door body 5 to rotate upward to open. After opening to the extreme position (at this time, the slider 10 is located at a certain distance above the safety pin 17), the telescopic device drives the safety pin 17 to extend through the guide groove plate 18, so that the safety pin 17 is clamped between the support card plate 19 and the safety card plate, thereby completing the entire opening or full opening process of the airtight door.

[0036] The complete closing process or principle of the airtight door in this embodiment is as follows: the push-pull device 9, that is, the pure electric cylinder extends downward and, under the deadweight of the door body 5, drives the slider 10 to descend along the guide rail 15 (the safety card plate then descends between the guide groove plate 18 and the support card plate 19). At this time, the bottom end of the support connecting rod 11 is also descending, and the door body 5 is also rotating downward and slowly closing (in this process, due to the deadweight of the door body 5, the push-pull device 9 does not push the slider 10 to descend, but provides an upward pulling force for the slider 10, and the downward force of the slider 10 is provided by the deadweight of the door body 5); and since the position of the support connecting rod 11 is extremely close to the oblong hole hinge 6, with the connection point of the oblong hole hinge 6 as the fulcrum, there is a large difference in the torque on both sides of the door body 5, so in the process of the door body 5 fitting and closing with the door frame 3, the lower edge of the door body 5 will first contact the door frame 3; As the push-pull device 9 continues to extend downward, the rubber sealing strip 8 at the bottom of the door body 5 begins to compress by about 10 mm under the action of the deadweight of the door body 5, which hinders the rotational movement of the door, and the door body 5 begins to move downward as a whole, and the side wedges 20 on both sides of the door body 5 are inserted into the side wedge grooves 22 and supported by the side stoppers 21. Finally, the bottom of the door body 5 is attached to the pad 13 and the side of the door body 5 is attached to the door frame 3. At this time, the side latch 24 is driven to be inserted into the notch 25 and the side slot 26 in turn to lock the door body 5 and the door frame 3 (at this time, the safety latch 17 can also extend through the guide slot plate 18 and be placed on the support card plate 19, locking the safety card plate at the bottom of the space surrounded by the support card plate 19, the safety latch 17, and the guide slot plate 18, so that the closed structure of the door is more solid), thereby completing the entire closing or complete closing process of the airtight door.

[0037] The beneficial effects of this embodiment are as follows: by tilting the door body 5 and the door frame 3, the airtight door can make full use of the door's own weight to squeeze the sealing component, which can make the airtightness stronger and reduce the use of sealing latches in traditional airtight doors. By providing a cavity 12 in the sealing strip 8, the sealing effect of the airtight door is better. The overall structure of the airtight door is simple, safe, stable and reliable.

[0038] Embodiment 2

[0039] The difference between this embodiment and the first embodiment is that a plurality of lower latches 27 are fixed to the bottom of the door body 5, and a plurality of lower wedge grooves 14 are opened in the inclined ramp 1. When the door body 5 is completely closed, the lower latches 27 are inserted into the lower wedge grooves 14.

[0040] In this embodiment, a plurality of wedge slot boxes are embedded and fixed in the inclined ramp 1, which are block-shaped structures; the wedge slot boxes are provided with lower wedge slots 14. The lower latch pin 27 is in a rectangular block shape with a wedge-shaped bottom; the structural shape of the lower wedge slot 14 is adapted to the structural shape of the bottom of the lower latch pin 27.

[0041] In this embodiment, since the support link 11 is located very close to the oblong hole hinge 6 and the connection point of the oblong hole hinge 6 is used as the fulcrum, there is a large difference in the torque on both sides of the door body 5, so the door body 5 will rotate first (the center of rotation is at the top of the oblong hole hinge 6) and then slide down as a whole, rather than sliding down first and then rotating.

[0042] The complete closing process or principle of the airtight door in this embodiment is as follows: the push-pull device 9, that is, the pure electric cylinder extends downward and, under the deadweight of the door body 5, drives the slider 10 to descend along the guide rail 15 (the safety card plate then descends between the guide groove plate 18 and the support card plate 19). At this time, the bottom end of the support connecting rod 11 is also descending, and the door body 5 is also rotating downward and slowly closing (in this process, due to the deadweight of the door body 5, the push-pull device 9 does not push the slider 10 to descend, but provides an upward pulling force for the slider 10, and the downward force of the slider 10 is provided by the deadweight of the door body 5); and since the position of the support connecting rod 11 is extremely close to the oblong hole hinge 6, with the connection point of the oblong hole hinge 6 as the fulcrum, there is a large difference in the torque on both sides of the door body 5, so in the process of the door body 5 being fitted and closed with the door frame 3, the lower edge of the door body 5 will first contact the door frame 3; as the push-pull device 9 continues to move downward The rubber sealing strip 8 at the bottom of the door body 5 begins to be compressed by about 10 mm under the action of the deadweight of the door body 5, which hinders the rotational movement of the door, and the door body 5 begins to move downward as a whole. Subsequently, the side wedge blocks 20 on both sides of the door body 5 are inserted into the side wedge grooves 22 and supported by the side stoppers 21 at the same time, and the lower latch 27 at the bottom of the door body 5 is inserted into the lower wedge grooves 14. Finally, the bottom of the door body 5 is attached to the pad 13 and the side of the door body 5 is attached to the door frame 3. At this time, the side latch 24 is driven to be inserted into the notch 25 and the side slot 26 in turn to lock and fix the door body 5 and the door frame 3 (at this time, the safety latch 17 can also extend through the guide slot plate 18 and be placed on the supporting card plate 19, locking the safety card plate at the bottom of the space surrounded by the supporting card plate 19, the safety latch 17, and the guide slot plate 18, so that the closed structure of the door is more solid), thereby completing the entire closing or complete closing process of the airtight door.

[0043] The beneficial effects of this embodiment are as follows: by setting the lower latch 27, the sealing effect of the bottom of the airtight door can be enhanced, and the airtightness is strong. At the same time, the design of the threshold without protruding from the ground is also realized, which will not hinder the passage and transportation of vehicles or goods and has stronger applicability.

[0044] Embodiment 3

[0045] The difference between this embodiment and the first embodiment is that the sealing assembly further includes a plurality of auxiliary sealing strips 16 , and the auxiliary sealing strips 16 are regularly distributed on the door body 5 .

[0046] In this embodiment, a cavity 12 is also provided in the auxiliary sealing strip 16 ; the auxiliary sealing strip 16 is also made of rubber, and its structural shape is similar to that of the sealing strip 8 , and is used to strengthen the sealing of the middle portion of the door body 5 .

[0047] In this embodiment, there are four groups of auxiliary sealing strips 16, two of which are arranged at intervals in the middle of the left and right sides of the door body 5; the auxiliary sealing strips 16 can be located on the inner side of the sealing gasket 7 or the sealing gasket 7 can be disconnected from the middle.

[0048] The beneficial effects of this embodiment are as follows: by adding an auxiliary sealing strip 16 to be in compression contact with the gasket 4 on the door frame 3, the sealing performance of the airtight door can be further enhanced, and the sealing effect is better.

[0049] The advantages of the utility model are as follows:

[0050] 1. By using the weight of the door to squeeze the sealing component, the airtightness can be made stronger and the use of sealing latches in traditional airtight doors can be reduced;

[0051] 2. By providing the lower latch 27, the sealing effect of the bottom of the airtight door can be enhanced, and the sealing performance is excellent. At the same time, the design of the threshold without protruding from the ground is also realized, which will not hinder the passage and transportation of vehicles or goods, and has stronger applicability;

[0052] 3. Compared with the traditional side-sliding or rolling shutter airtight door, this airtight door is opened and closed by rotation, without the need for additional space;

[0053] 4. The overall structure of this airtight door is simple, safe, stable, reliable and easy to maintain.

[0054] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. An airtight door for a ro-ro ship passage equipment, comprising an inclined ramp (1), a door body (5), and a horizontal passage (2), wherein the door body (5) is arranged between the inclined ramp (1) and the horizontal passage (2), the door body (5) is hinged to the horizontal passage (2) through an oblong hole hinge (6), a sealing assembly is arranged on the door body (5), a door frame (3) is arranged on the horizontal passage (2), the door body (5) and the door frame (3) are arranged in cooperation, characterized in that: The door body (5) and the door frame (3) are both arranged at an inclination, a push-pull device (9) is installed in the horizontal channel (2), one end of the push-pull device (9) is connected to a slider (10), a support connecting rod (11) is hinged on the slider (10), and the support connecting rod (11) is hinged to the door body (5).

2. The airtight door for the ro-ro ship passage equipment according to claim 1, characterized in that: The door body (5) is provided with a lower latch pin (27), and the inclined ramp (1) is provided with a lower wedge groove (14). When the door body (5) is completely closed, the lower latch pin (27) is inserted into the lower wedge groove (14).

3. The airtight door for the ro-ro ship passage equipment according to claim 1, characterized in that: The sealing assembly comprises a sealing pad (7) and a sealing strip (8), which are respectively fixed around the door body (5), and a cavity (12) is provided in the sealing strip (8).

4. The airtight door for the ro-ro ship passage equipment according to claim 2, characterized in that: The door frame (3) and the inclined ramp (1) are both provided with a gasket (4); when the door body (5) is closed, the sealing component is in compression contact with the gasket (4).

5. The airtight door for the ro-ro ship passage equipment according to claim 4, characterized in that: The inclined ramp (1) is provided with a backing plate (13) and a wedge slot box, the door body (5) is arranged between the door frame (3) and the backing plate (13), a gasket (4) is fixed on the backing plate (13), and a lower wedge slot (14) is provided in the wedge slot box.

6. The airtight door for the ro-ro ship passage equipment according to claim 1, characterized in that: A guide rail (15) is fixed in the horizontal channel (2), and the sliding block (10) is slidably connected to the guide rail (15).

7. The airtight door for the ro-ro ship passage equipment according to claim 6, characterized in that: A safety locking device is installed in the horizontal channel (2), and the safety locking device comprises a telescopic device and a safety latch (17), which are connected. A safety card plate is fixed on the slider (10), and the safety latch (17) is arranged on one side of the safety card plate.

8. The airtight door for the ro-ro ship passage equipment according to claim 7, characterized in that: The safety locking device also includes a guide slot plate (18) and a support card plate (19), wherein the safety card plate is arranged between the guide slot plate (18) and the support card plate (19). When the door body (5) is fully opened, the safety latch (17) passes through the guide slot plate (18) and is connected between the support card plate (19) and the safety card plate.

9. The airtight door for the ro-ro ship passage equipment according to claim 1, characterized in that: The door body (5) is provided with a side wedge block (20), the door frame (3) is provided with a side stopper (21), the side stopper (21) is provided with a side wedge groove (22), and the side wedge block (20) is matched and connected with the side wedge groove (22).

10. The airtight door for the ro-ro ship passage equipment according to claim 9, characterized in that: The door body (5) is also provided with a telescopic rod (23), a side latch (24), and a notch (25); the telescopic rod (23) is connected to the latch; the door frame (3) is provided with a side slot (26); the latch is driven by the telescopic rod (23) to be inserted into the notch (25) and the side slot (26) in sequence, thereby locking the door body (5) and the door frame (3).

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