Sealing structure of sliding cabin cover of large-opening cargo cabin
By designing a sealing structure at the connection of the sliding hatch cover of the large open cargo hold, and using rubber strips and electromagnets to control the movement of the hatch cover, the problem of seawater flowing into the cargo hold is solved, and transportation safety and lifting efficiency are improved.
Patent Information
- Application Number
- CN202421139343.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The sliding hatch of the large opening cargo hold lacks a sealing structure at the connection, which makes seawater easy to flow into the cargo hold, causing cargo damage. The lifting hatch cover requires a large amount of time-consuming and labor-intensive operation of the dock crane.
A sealing structure is designed, including the first and second hatch covers, extension plates, rubber strips, solenoids and rollers, and the movement and contact rubber strips of the hatch cover are controlled by the driving mechanism to ensure that the hatch cover can be sealed when it is expanded and closed. Prevent sea water from entering.
It effectively reduces the movement resistance of the hatch cover, ensures the sealing of the cargo hold, avoids seawater entry, improves cargo transportation safety, and reduces lifting costs and time.
Smart Images
Figure CN222202828U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ship hatch covers and relates to a sealing structure of a sliding hatch cover of a cargo hold with a large opening. Background Art
[0002] The conventional design of hatch covers on cargo ships is to use folding hatch covers or lift-off hatch covers. However, for cargo holds with large openings, due to the long opening length of the cargo holds, a large number of hatch covers need to be installed, and folding hatch covers cannot be used. If lift-off hatch covers are used, a large number of dock cranes are needed to lift these hatch covers, which is time-consuming and labor-intensive.
[0003] Therefore, a sliding hatch cover is designed, which consists of a large and a small hatch cover. When opening, the small hatch cover is slid into the large hatch cover, and when closing, the small hatch cover is slid out of the large hatch cover. Usually, there is no sealing structure at the connection between the large hatch cover and the small hatch cover, and seawater can easily flow into the cargo hold and cause damage to the cargo. Utility Model Content
[0004] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose a sealing structure for a sliding hatch cover of a cargo hold with a large opening, which can seal the connection of the sliding hatch cover of the cargo hold with a large opening, prevent seawater from flowing into the cargo hold, and ensure the safety of cargo transportation.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] A sealing structure of a sliding hatch cover of a cargo hold with a large opening, wherein the cargo hold with a large opening is provided with a hatch coaming, the sliding hatch cover comprises a first hatch cover and a second hatch cover, the first hatch cover and the second hatch cover are both movably arranged on the hatch coaming along the length direction, a notch groove is provided on the right side of the first hatch cover, and the second hatch cover can be moved into the notch groove, the sealing structure comprises:
[0007] A first extension plate, the first extension plate is arranged around three sides of the notch groove, and the lower side of the first extension plate extends out of the lower side of the first hatch cover;
[0008] A second extension plate, the second extension plate is arranged around three sides of the second hatch cover, the lower side of the second extension plate extends out of the lower side of the second hatch cover, and when the second hatch cover moves into the notch groove, the first extension plate and the second extension plate face each other inside and outside;
[0009] A channel steel track, wherein the channel steel track is arranged around the upper side surface of the hatch coaming, and a first rubber strip is arranged in the channel steel track. When the first hatch cover and the second hatch cover are unfolded, there is at least one position where both the first extension plate and the second extension plate are located above the first rubber strip;
[0010] a first driving mechanism, wherein the first driving mechanism is arranged on the first hatch cover, and the first driving mechanism is capable of changing the height distance between the first hatch cover and the hatch coaming so that the lower side of the first extension plate can contact the first rubber strip;
[0011] The second driving mechanism is arranged on the second hatch cover, and the second driving mechanism can change the height distance between the second hatch cover and the hatch coaming so that the lower side of the second extension plate can contact the first rubber strip.
[0012] In the above-mentioned sealing structure of a large-opening cargo hold sliding hatch cover, the first driving mechanism includes two first driving structures, the two first driving structures are respectively arranged on both sides of the first hatch cover, and the first driving structure includes:
[0013] A first guide rail, the first guide rail is arranged on one side of the hatch coaming, a first electromagnet is embedded on the upper side of the first guide rail, and the first electromagnet is electrically connected to an external power supply;
[0014] The first groove is formed on the lower side of the first hatch cover, a plurality of first rollers are rotatably arranged in the first groove via a plurality of first rotating shafts, a first annular groove is arranged on the wheel surface of the first roller, a first annular electromagnet is embedded in the bottom of the first annular groove, the first roller is rollingly arranged on the first guide rail via the first annular groove, and the first annular electromagnet is electrically connected to an external power supply.
[0015] In the above-mentioned sealing structure of a large-opening cargo hold sliding hatch cover, the second driving mechanism includes two second driving structures, the two second driving structures are respectively arranged on both sides of the second hatch cover, and the second driving structure includes:
[0016] a second guide rail, the second guide rail being arranged on one side of the hatch coaming, a second electromagnet being embedded on an upper side surface of the second guide rail, and the second electromagnet being electrically connected to an external power source;
[0017] The second groove is opened on the lower side of the second hatch cover, a plurality of second rollers are rotatably arranged in the second groove through a plurality of second rotating shafts, a second annular groove is arranged on the wheel surface of the second roller, a second annular electromagnet is embedded in the bottom of the second annular groove, the second roller is rollingly arranged on the second guide rail through the second annular groove, and the second annular electromagnet is electrically connected to an external power supply.
[0018] In the above-mentioned sealing structure of a sliding hatch cover for a large-opening cargo hold, two first rubber oblique blocks are symmetrically provided on the two side surfaces of the first extension plate close to the width direction of the large-opening cargo hold, and the first rubber oblique blocks are in a wedge shape that is larger at the top and smaller at the bottom. Two second rubber oblique blocks are symmetrically provided on the two side surfaces of the second hatch cover in the width direction, and the second rubber oblique blocks are in a wedge shape that is larger at the bottom and smaller at the top. The two first rubber oblique blocks and the two second rubber oblique blocks correspond one to one. When the lower sides of the first extension plate and the second extension plate contact the first rubber strip at the same time, the first rubber oblique blocks and the corresponding second rubber oblique blocks fit together inside and outside.
[0019] In the above-mentioned sealing structure of a large-opening cargo hold sliding hatch cover, a second rubber strip is provided along the width direction on one side of the notch groove close to the upper side surface of the second hatch cover, and when the lower sides of the first extension plate and the second extension plate contact the first rubber strip at the same time, the second rubber strip contacts the upper side surface of the second hatch cover.
[0020] Compared with the prior art, the utility model has the following advantages:
[0021] 1. In the initial state, under the action of the first driving mechanism and the second driving mechanism, a certain gap is left between the first hatch cover and the hatch coaming, and a certain gap is left between the second hatch cover and the hatch coaming, so as to facilitate the first hatch cover and the second hatch cover to move on the hatch coaming and reduce the resistance during movement. When the first hatch cover and the second hatch cover are fully unfolded, the first extension plate and the second extension plate are both located above the first rubber strip. The first driving mechanism and the second driving mechanism move the first hatch cover and the second hatch cover downward, and the first extension plate and the second extension plate contact the first rubber strip at the same time, so as to seal the cargo hold with a large opening;
[0022] 2. The first hatch cover is set on the first guide rail by rolling through a plurality of first rollers. The first groove ensures that the first roller always rolls along the first guide rail. In the initial state, the first electromagnet and the first annular electromagnet are started to make the magnetic poles of the two the same, so as to generate a repulsive force, so that the bottom of the first annular groove of the first roller does not contact the first guide rail, and the first hatch cover is away from the hatch enclosure, so as to reduce the rolling resistance of the first hatch cover. When sealing is required, the first electromagnet and the first annular electromagnet are closed, and the first hatch cover moves downward under the action of gravity, so that the bottom of the first annular groove of the first roller contacts the first guide rail, and the lower side of the first extension plate contacts the first rubber strip, so as to play a sealing role;
[0023] 3. The second hatch cover is set on the second guide rail by rolling through a plurality of second rollers. The second groove ensures that the second roller always rolls along the second guide rail. In the initial state, the second electromagnet and the second annular electromagnet are started to make the magnetic poles of the two the same, so as to generate a repulsive force, so that the bottom of the second annular groove of the second roller does not contact the second guide rail, and the second hatch cover is away from the hatch enclosure, so as to reduce the rolling resistance of the second hatch cover. When sealing is required, the second electromagnet and the second annular electromagnet are turned off, and the second hatch cover moves downward under the action of gravity, so that the bottom of the second annular groove of the second roller contacts the second guide rail, and the lower side of the second extension plate contacts the first rubber strip, so as to play a sealing role;
[0024] 4. When the second hatch cover and the first hatch cover are fully unfolded, the first rubber bevel block and the second rubber bevel block are in the same vertical plane, the first electromagnet, the second electromagnet, the first annular electromagnet and the second annular electromagnet are turned off, so that the first hatch cover and the second hatch cover move downward, and the lower sides of the first extension plate and the second extension plate contact the first rubber strip at the same time. At this time, the first rubber bevel block and the second rubber bevel block are fitted inside and outside to seal the left and right sides of the second hatch cover and the notch groove;
[0025] 5. When the first hatch cover and the second hatch cover are fully unfolded, move the first hatch cover and the second hatch cover downward so that the lower sides of the first extension plate and the second extension plate contact the first rubber strip at the same time. At this time, the second rubber strip contacts the upper side of the second hatch cover, sealing the second hatch cover and the upper side of the notch groove to ensure that the connection between the second hatch cover and the first hatch cover is completely sealed to prevent seawater from entering the large opening cargo hold through the connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a diagram of the hatch cover structure of a large cargo hold;
[0027] Figure 2 It is a structural schematic diagram of the utility model;
[0028] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle;
[0029] Figure 4 yes Figure 2 A partial enlarged view of point C in the middle;
[0030] Figure 5 This is a diagram of the sealing status of the first hatch cover and the second hatch cover.
[0031] In the figure: 1, hatch enclosure; 11, first guide rail; 111, first electromagnet; 12, second guide rail; 121, second electromagnet; 13, channel steel track; 131, first rubber strip; 2, first hatch cover; 21, first groove; 22, first rotating shaft; 23, first roller; 231, first annular groove; 232, first annular electromagnet; 24, first extension plate; 241, first rubber oblique block; 3, second hatch cover; 31, second groove; 32, second rotating shaft; 33, second roller; 331, second annular groove; 332, second annular electromagnet; 34, second extension plate; 341, second rubber oblique block; 4, second rubber strip; 5, first mounting cavity; 51, first motor; 6, notch groove; 7, second mounting cavity; 71, second motor. DETAILED DESCRIPTION
[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0033] like Figure 1-5 As shown, a sealing structure of a sliding hatch cover for a large-opening cargo hold is provided, wherein a hatch coaming 1 is provided on the large-opening cargo hold, and the sliding hatch cover comprises a first hatch cover 2 and a second hatch cover 3, wherein the first hatch cover 2 and the second hatch cover 3 are both movably arranged on the hatch coaming 1 along the length direction, and a notch groove 6 is provided on the right side of the first hatch cover 2, into which the second hatch cover 3 can be moved.
[0034] The sealing structure includes a first extension plate 24, a second extension plate 34, a channel steel track 13, a first driving mechanism and a second driving mechanism.
[0035] The first extension plate 24 is disposed around three sides of the notch groove 6 , and the lower side of the first extension plate 24 extends out of the lower side of the first hatch cover 2 .
[0036] The second extension plate 34 is arranged on three side surfaces of the second hatch cover 3, and the lower side of the second extension plate 34 extends out of the lower side surface of the second hatch cover 3. When the second hatch cover 3 moves into the notch groove 6, the first extension plate 24 and the second extension plate 34 face each other inside and outside.
[0037] The channel steel track 13 is arranged around the upper side of the hatch coaming 1, and a first rubber strip 131 is arranged inside the channel steel track 13. When the first hatch cover 2 and the second hatch cover 3 are unfolded, there is at least one position where the first extension plate 24 and the second extension plate 34 are both located above the first rubber strip 131.
[0038] The first driving mechanism is disposed on the first hatch cover 2 , and is capable of changing the height distance between the first hatch cover 2 and the hatch coaming 1 , so that the lower side of the first extension plate 24 can contact the first rubber strip 131 .
[0039] The second driving mechanism is disposed on the second hatch cover 3 , and can change the height distance between the second hatch cover 3 and the hatch coaming 1 , so that the lower side of the second extension plate 34 can contact the first rubber strip 131 .
[0040] In the initial state, under the action of the first driving mechanism and the second driving mechanism, a certain gap is left between the first hatch cover 2 and the hatch coaming 1, and a certain gap is left between the second hatch cover 3 and the hatch coaming 1, so as to facilitate the first hatch cover 2 and the second hatch cover 3 to move on the hatch coaming 1 and reduce the resistance during movement. When the first hatch cover 2 and the second hatch cover 3 are fully unfolded, the first extension plate 24 and the second extension plate 34 are both located above the first rubber strip 131. The first driving mechanism and the second driving mechanism are used to move the first hatch cover 2 and the second hatch cover 3 downward, and the first extension plate 24 and the second extension plate 34 contact the first rubber strip 131 at the same time, so as to seal the large opening cargo hold.
[0041] Specifically, the first driving mechanism includes two first driving structures, which are respectively arranged on both sides of the first hatch 2 , and the first driving structure includes a first guide rail 11 and a first groove 21 .
[0042] The first guide rail 11 is arranged on one side of the hatch coaming 1 , and a first electromagnet 111 is embedded on the upper side of the first guide rail 11 . The first electromagnet 111 is electrically connected to an external power source.
[0043] The first groove 21 is opened on the lower side of the first hatch 2, and a plurality of first rollers 23 are rotatably arranged in the first groove 21 through a plurality of first rotating shafts 22. A first annular groove 231 is provided on the wheel surface of the first roller 23, and a first annular electromagnet 232 is embedded in the bottom of the first annular groove 231. The first roller 23 is rollingly arranged on the first guide rail 11 through the first annular groove 231, and the first annular electromagnet 232 is electrically connected to an external power supply.
[0044] Preferably, two first installation cavities 5 are provided in the first hatch 2, and the two first installation cavities 5 correspond to the two first grooves 21 one by one. The first installation cavities 5 are opened on the sides of the corresponding first grooves 21, and a first motor 51 is provided in the first installation cavity 5, wherein one first rotating shaft 22 extends into the first installation cavity 5 and the end thereof is fixedly connected to the output shaft of the first motor 51.
[0045] The first hatch cover 2 is rollingly arranged on the first guide rail 11 through a plurality of first rollers 23. The first groove 21 ensures that the first roller 23 always rolls along the first guide rail 11. In the initial state, the first electromagnet 111 and the first annular electromagnet 232 are started to make their magnetic poles the same, thereby generating a repulsive force, so that the bottom of the first annular groove 231 of the first roller 23 does not contact the first guide rail 11, and the first hatch cover 2 is away from the hatch coaming 1, thereby reducing the rolling resistance of the first hatch cover 2. When sealing is required, the first electromagnet 111 and the first annular electromagnet 232 are closed, and the first hatch cover 2 moves downward under the action of gravity, so that the bottom of the first annular groove 231 of the first roller 23 contacts the first guide rail 11, and at the same time, the lower side of the first extension plate 24 contacts the first rubber strip 131, thereby playing a sealing role.
[0046] Specifically, the second driving mechanism includes two second driving structures, which are respectively arranged on both sides of the second hatch 3 , and the second driving structure includes a second guide rail 12 and a second groove 31 .
[0047] The second guide rail 12 is arranged on one side of the hatch coaming 1 , and a second electromagnet 121 is embedded on the upper side of the second guide rail 12 . The second electromagnet 121 is electrically connected to an external power source.
[0048] The second groove 31 is opened on the lower side of the second hatch 3, and a plurality of second rollers 33 are rotatably arranged in the second groove 31 through a plurality of second rotating shafts 32. A second annular groove 331 is provided on the wheel surface of the second roller 33, and a second annular electromagnet 332 is embedded in the bottom of the second annular groove 331. The second roller 33 is rollingly arranged on the second guide rail 12 through the second annular groove 331, and the second annular electromagnet 332 is electrically connected to an external power supply.
[0049] Preferably, two second installation cavities 7 are provided in the second hatch cover 3, and the two second installation cavities 7 correspond to the two second grooves 31 one by one. The second installation cavities 7 are opened on the sides of the corresponding second grooves 31, and a second motor 71 is provided in the second installation cavity 7, wherein one second rotating shaft 32 extends into the second installation cavity 7 and the end thereof is fixedly connected to the output shaft of the second motor 71.
[0050] The second hatch cover 3 is rollingly arranged on the second guide rail 12 through a plurality of second rollers 33. The second groove 32 ensures that the second roller 33 always rolls along the second guide rail 12. In the initial state, the second electromagnet 121 and the second annular electromagnet 332 are started to make their magnetic poles the same, thereby generating a repulsive force so that the bottom of the second annular groove 331 of the second roller 33 does not contact the second guide rail 12, and the second hatch cover 3 is away from the hatch enclosure 1, thereby reducing the rolling resistance of the second hatch cover 3. When sealing is required, the second electromagnet 121 and the second annular electromagnet 332 are closed, and the second hatch cover 3 moves downward under the action of gravity, and the bottom of the second annular groove 331 of the second roller 33 contacts the second guide rail 12, and at the same time, the lower side of the second extension plate 34 contacts the first rubber strip 131, thereby playing a sealing role.
[0051] Specifically, two first rubber oblique blocks 241 are symmetrically provided on the two side surfaces of the first extension plate 24 close to the width direction of the large opening cargo hold, and the first rubber oblique blocks 241 are in the shape of a wedge with a larger upper part and a smaller lower part. Two second rubber oblique blocks 341 are symmetrically provided on the two side surfaces of the second hatch cover 3 in the width direction, and the second rubber oblique blocks 341 are in the shape of a wedge with a larger lower part and a smaller upper part. The two first rubber oblique blocks 241 and the two second rubber oblique blocks 341 correspond one to one. When the lower sides of the first extension plate 24 and the second extension plate 34 contact the first rubber strip 131 at the same time, the first rubber oblique blocks 241 and the corresponding second rubber oblique blocks 341 fit together inside and outside.
[0052] When the second hatch cover 3 and the first hatch cover 2 are fully unfolded, the first rubber bevel block 241 and the second rubber bevel block 341 are in the same vertical plane, the first electromagnet 111, the second electromagnet 121, the first annular electromagnet 232 and the second annular electromagnet 332 are closed, so that the first hatch cover 2 and the second hatch cover 3 move downward, and the lower sides of the first extension plate 24 and the second extension plate 34 contact the first rubber strip 131 at the same time. At this time, the first rubber bevel block 241 and the second rubber bevel block 341 are fitted inside and outside to seal the left and right sides of the second hatch cover 3 and the notch groove 6.
[0053] Specifically, a second rubber strip 4 is provided along the width direction on one side of the notch groove 6 close to the upper side of the second hatch cover 3 , and when the lower sides of the first extension plate 24 and the second extension plate 34 contact the first rubber strip 131 at the same time, the second rubber strip 4 contacts the upper side of the second hatch cover 3 .
[0054] When the first hatch cover 2 and the second hatch cover 3 are fully unfolded, the first hatch cover 2 and the second hatch cover 3 are moved downward so that the lower sides of the first extension plate 241 and the second extension plate 341 contact the first rubber strip 131 at the same time. At this time, the second rubber strip 4 contacts the upper side of the second hatch cover 3, sealing the second hatch cover 3 and the upper side of the notch groove 6, ensuring that the connection between the second hatch cover 3 and the first hatch cover 2 is completely sealed.
Claims
1. A sealing structure for a sliding hatch cover of a cargo hold with a large opening, wherein the cargo hold with a large opening is provided with a hatch coaming (1), the sliding hatch cover comprises a first hatch cover (2) and a second hatch cover (3), the first hatch cover (2) and the second hatch cover (3) are both arranged on the hatch coaming (1) movably along the length direction, a notch groove (6) is provided on the right side of the first hatch cover (2), and the second hatch cover (3) can be moved into the notch groove (6), characterized in that: The sealing structure comprises: A first extension plate (24), the first extension plate (24) being arranged around three sides of the notch groove (6), the lower side edge of the first extension plate (24) extending out of the lower side of the first hatch cover (2); A second extension plate (34), the second extension plate (34) being arranged around three side surfaces of the second hatch cover (3), the lower side edge of the second extension plate (34) extending out of the lower side surface of the second hatch cover (3), and when the second hatch cover (3) moves into the notch groove (6), the first extension plate (24) and the second extension plate (34) are opposite to each other inside and outside; A channel steel track (13), the channel steel track (13) being arranged around the upper side surface of the hatch coaming (1), a first rubber strip (131) being arranged in the channel steel track (13), and when the first hatch cover (2) and the second hatch cover (3) are unfolded, there is at least one position where the first extension plate (24) and the second extension plate (34) are both located above the first rubber strip (131); a first driving mechanism, the first driving mechanism being arranged on the first hatch cover (2), the first driving mechanism being capable of changing the height distance between the first hatch cover (2) and the hatch coaming (1) so that the lower side edge of the first extension plate (24) can contact the first rubber strip (131); A second driving mechanism, wherein the second driving mechanism is arranged on the second hatch cover (3), and the second driving mechanism is capable of changing the height distance between the second hatch cover (3) and the hatch coaming (1), so that the lower side of the second extension plate (34) can contact the first rubber strip (131).
2. The sealing structure of the large opening cargo hold sliding hatch cover according to claim 1, characterized in that: The first driving mechanism comprises two first driving structures, the two first driving structures are respectively arranged on both sides of the first hatch cover (2), and the first driving structure comprises: A first guide rail (11), the first guide rail (11) being arranged on one side of the hatch coaming (1), a first electromagnet (111) being embedded on the upper side of the first guide rail (11), the first electromagnet (111) being electrically connected to an external power source; A first groove (21), wherein the first groove (21) is formed on the lower side of the first hatch cover (2), wherein a plurality of first rollers (23) are rotatably arranged in the first groove (21) via a plurality of first rotating shafts (22), wherein a first annular groove (231) is arranged on the wheel surface of the first roller (23), wherein a first annular electromagnet (232) is embedded in the bottom of the first annular groove (231), wherein the first roller (23) is rotatably arranged on the first guide rail (11) via the first annular groove (231), and wherein the first annular electromagnet (232) is electrically connected to an external power supply.
3. The sealing structure of the sliding hatch cover of a large-opening cargo hold according to claim 1, characterized in that: The second driving mechanism comprises two second driving structures, the two second driving structures are respectively arranged on both sides of the second hatch cover (3), and the second driving structure comprises: A second guide rail (12), the second guide rail (12) being arranged on one side of the hatch coaming (1), a second electromagnet (121) being embedded on the upper side of the second guide rail (12), and the second electromagnet (121) being electrically connected to an external power supply; A second groove (31), wherein the second groove (31) is provided on the lower side of the second hatch cover (3), wherein a plurality of second rollers (33) are rotatably arranged in the second groove (31) via a plurality of second rotating shafts (32), wherein a second annular groove (331) is provided on the wheel surface of the second roller (33), wherein a second annular electromagnet (332) is embedded at the bottom of the second annular groove (331), wherein the second roller (33) is rotatably arranged on the second guide rail (12) via the second annular groove (331), and wherein the second annular electromagnet (332) is electrically connected to an external power supply.
4. The sealing structure of the sliding hatch cover of a large-opening cargo hold according to claim 1, characterized in that: Two first rubber oblique blocks (241) are symmetrically arranged on two side surfaces of the first extension plate (24) close to the width direction of the large opening cargo hold, and the first rubber oblique blocks (241) are in a wedge shape with a larger upper part and a smaller lower part. Two second rubber oblique blocks (341) are symmetrically arranged on two side surfaces of the second hatch cover (3) in the width direction, and the second rubber oblique blocks (341) are in a wedge shape with a larger lower part and a smaller upper part. The two first rubber oblique blocks (241) and the two second rubber oblique blocks (341) correspond to each other one by one. When the lower sides of the first extension plate (24) and the second extension plate (34) contact the first rubber strip (131) at the same time, the first rubber oblique blocks (241) and the corresponding second rubber oblique blocks (341) are fitted inside and outside.
5. The sealing structure of the large opening cargo hold sliding hatch cover according to claim 1, characterized in that: A second rubber strip (4) is provided along the width direction on one side of the notch groove (6) close to the upper side surface of the second hatch cover (3); when the lower sides of the first extension plate (24) and the second extension plate (34) contact the first rubber strip (131) at the same time, the second rubber strip (4) contacts the upper side surface of the second hatch cover (3).