Passage hatch cover capable of being opened from two sides

Abstract

The invention discloses a channel hatch cover capable of being opened from two sides. The channel hatch cover comprises a frame body and a cover plate, wherein one side of the cover plate is rotationally connected with the frame body; the cover plate is provided with a double-side opening and closing mechanism, the double-side opening and closing mechanism comprises the locking block, a first opening and closing part located on the inner side of the cover plate, a second opening and closing part located on the outer side of the cover plate and a limiting part arranged on the frame body, and the limiting part is used for being matched with the locking block to lock or unlock the cover plate; the first opening and closing component is connected with the locking block and used for driving the locking block to be clamped with or separated from the limiting component and locking or opening the cover plate from the inner side; the second opening and closing component is used for pushing the locking block to be separated from the limiting component, and the cover plate is opened from the outer side. The structure is simple, the manufacturing cost is low, when the first opening and closing component on the inner side opens the cover plate, the second opening and closing component on the outer side does not affect normal opening of the cover plate by the first opening and closing component, safety is high, and it is ensured that people cannot be trapped in a cabin.

Description

Technical Field

[0001] This application relates to the technical field of ships, and particularly relates to a passage hatch cover that can be opened on both sides. Background Art

[0002] A pedestrian hatch cover (or manhole cover, opening and closing device for cabin entrances and exits) is an opening device provided on the deck or bulkhead of enclosed cabins such as ship liquid tanks and isolation cabins, for personnel to enter and exit for maintenance or construction, and is an important device for personnel to enter and exit enclosed cabins in means of transportation such as ships.

[0003] For the existing hatch cover assembly with the publication number CN110053715A and the ship including it, there are handwheels arranged on both sides of the lock shaft penetrating through the cover plate. Rotating the handwheels drives the locking assembly to lock or unlock the hatch cover inside and outside, facilitating the opening of the hatch cover; although the hatch cover can be opened from both the inside and outside, since the inside and outside handwheels are linked by the lock shaft, when the outside handwheel gets stuck, the hatch door cannot be opened, and the personnel inside the cabin cannot get out. Moreover, it occupies a large space and is inconvenient to operate in a narrow passage. Often, a great deal of force is required to open it. The overall structure is complex and the manufacturing cost is high. Summary of the Invention

[0004] In view of the above problems, this application provides a passage hatch cover that can be opened on both sides, with a simple overall structure, low manufacturing cost, and can open or close the cover plate from both the inside and outside. When opening the cover plate from the inside, it is not affected by the outside, ensuring that the inside is always in a state where it can be opened at any time. The following technical solutions are adopted: A passage hatch cover that can be opened on both sides includes a frame body, and a cover plate rotatably connected to one side of the frame body; A double-sided opening and closing mechanism is provided on the cover plate. The double-sided opening and closing mechanism includes a locking block, a first opening and closing component located inside the cover plate, a second opening and closing component located outside the cover plate, and a limiting component provided on the frame body for cooperating with the locking block to lock the cover plate; The first opening and closing component is connected to the locking block and is used to drive the locking block to be clamped or disengaged from the limiting component, to lock or open the cover plate from the inside; The second opening and closing component is used to push the locking block to disengage from the limiting component, to open the cover plate from the outside.

[0005] Preferably, the locking block includes a first rotating portion, a locking portion and a first driving portion connected to the first rotating portion. The first rotating portion is rotatably connected to the cover plate, and the first driving portion is connected to the first opening and closing component.

[0006] More preferably, the length of the locking portion is less than the length of the first driving portion.

[0007] Preferably, the second opening and closing part includes a second rotating part rotatably connected to the cover plate, and a driving plate provided on the second rotating part. The driving plate can rotate around the second rotating part and abut against the locking block, so that the locking block disengages from the limiting part.

[0008] More preferably, the driving plate includes an abutting part and a second driving part, and the second rotating part is provided at one end close to the abutting part.

[0009] Preferably, an elastic support member is further provided on the limiting part. When the cover plate is locked, the cover plate abuts against the elastic support member.

[0010] Preferably, a guiding and limiting structure is further included. The guiding and limiting structure includes a first limiting part provided on the limiting part and a second limiting part provided at the end of the locking part, and is used to guide the locking block to be clamped or disengaged from the limiting part.

[0011] Preferably, a receiving groove is provided on the cover plate, and the first opening and closing member is provided in the receiving groove.

[0012] Preferably, a sealing sleeve is further included, and the sealing sleeve is sleeved outside the first opening and closing member.

[0013] The beneficial effects of the present application compared with the prior art are as follows: (1) In the present application, the first opening and closing member and the second opening and closing member drive the locking block, and the hatch cover can be opened from both sides. The overall structure is simple and the manufacturing cost is low.

[0014] (2) The second opening and closing member and the first opening and closing member are independently arranged. Therefore, when the first opening and closing member is driven from inside the cabin to open the cover plate, the second opening and closing member outside the cabin will not affect the normal opening of the cover plate by the first opening and closing member. It has high safety, ensures that the first opening and closing member inside is always in a state where the cover plate can be opened at any time, and can prevent personnel from being trapped in the cabin.

[0015] (3) The first opening and closing member and the second opening and closing member can independently drive the locking block to rotate by using the lever principle to unlock or lock the cover plate. Therefore, only a small force is required to lock or unlock the cover plate, and the operation is simple, convenient and labor-saving.

[0016] (4) Under normal conditions, the second opening and closing member can be received in the receiving groove by its own gravity and will not protrude from the deck, avoiding affecting the activities of personnel on the deck. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the hatch cover of the present application when it is closed (the position of the dotted line is the position when unlocked); Figure 2 is the present applicationFigure 1 Partial enlarged view at location A Figure 3 It is a schematic structural diagram when the hatch cover of this application is opened.

[0018] In the figure: 10. Hatch cover, 100. Accommodating groove, 110. Cover plate, 120. Frame body; 20. Bilateral opening and closing mechanism, 210. Locking block, 2110. First rotating part, 2120. Locking part, 2130. First driving part, 220. First opening and closing component, 230. Second opening and closing component, 2310. Second rotating part, 2320. Abutting part, 2330. Second driving part, 240. Limiting component; 30. Deck, 40. Elastic support member, 50. Sealing sleeve, 60. Passage, 70. Support member. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings of this application. Obviously, the described embodiments of this application are only partial embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0020] Refer to Figures 1 to 3 , for further description of this application: Combined with Figure 1 and Figure 3 , the passage hatch cover that can be opened bilaterally includes a frame body 120 fixed on the deck 30 and a cover plate 110 rotatably connected to one side of the frame body 120; a passage 60 for personnel to pass through is provided in the frame body 120.

[0021] A bilateral opening and closing mechanism 20 is provided on the cover plate 110. The bilateral opening and closing mechanism 20 includes the locking block 210, a first opening and closing component 220 located inside the cover plate 110, a second opening and closing component 230 located outside the cover plate 110, and a limiting component 240 provided on the frame body 120 for cooperating with the locking block 210 to lock the cover plate 110; wherein, the limiting component 240 includes a limiting plate.

[0022] The first opening and closing component 220 is connected to the locking block 210 and is used to drive the locking block 210 to disengage from the limiting component 240 and open the cover plate 110 from the inside; The driving second opening and closing component 230 is used to push the locking block 210 to disengage from the limiting component 240 and open the cover plate 110 from the outside.

[0023] Through the bilateral opening and closing mechanism 20 of the present application, the bilateral opening or closing of the cover plate 110 can be realized. When the first opening and closing component 220 is driven from inside the cabin to open the cover plate 110, the second opening and closing component 230 outside the cabin will not affect the normal opening of the cover plate 110 by the first opening and closing component 220, with high safety. It ensures that the first opening and closing component 220 inside is always in a state of being able to open the cover plate at any time, avoiding personnel being trapped in the cabin, and the overall structure is simple and the manufacturing cost is low.

[0024] Combined with Figure 2 , in this embodiment, the locking block 210 includes a first rotating part 2110, a locking part 2120 and a first driving part 2130 connected to the first rotating part 2110. The first rotating part 2110 is rotatably connected to the cover plate 110, and the first driving part 2130 is connected to the first opening and closing component 220. Among them, the locking block 210 is integrally in a "V" shape.

[0025] In order to unlock or lock the cover plate 110 more labor - savingly; the length of the locking part 2120 is less than the length of the first driving part 2130; when the first opening and closing component 220 is driven to abut against the first driving part 2130, the locking part 2120 is pushed with the first rotating part 2110 as a support point; using the lever principle to drive the locking part 2120 to disengage from the limiting component 240. Therefore, it is more convenient and labor - saving to drive the cover plate 110 to open through the first opening and closing component 220.

[0026] Combined with Figure 2 , the second opening and closing part includes a second rotating part 2310 rotatably connected to the cover plate 110, and a driving plate arranged on the second rotating part 2310. The driving plate can rotate around the second rotating part 2310 and abut against the locking block 210 to make the locking block 210 disengage from the limiting component 240. Among them, the driving plate includes an abutting part 2320 and a second driving part 2330, and the second rotating part is arranged at one end close to the abutting part 2320; when the second driving part 2330 is driven, the abutting part 2320 rotates with the second rotating part 2310 as a rotation support point, abuts against the first driving part 2130, and pushes the locking part 2120 to rotate. The second opening and closing component 230 uses the lever principle to realize the unlocking of the cover plate 110, and the opening is more relaxed and convenient.

[0027] Combined with Figure 2, to prevent the second opening and closing member 230 from protruding out of the deck 30 and affecting personnel activities; a receiving groove 100 is provided on the cover plate 110, and the first opening and closing member 220 is arranged in the receiving groove 100. Among them, the receiving groove 100 is opened on the outer side of the cover plate 110 for receiving the second opening and closing member 230 to ensure that when the cover plate 110 is in the locked state (closed state), the second opening and closing member 230 will not protrude.

[0028] Since the second rotating part is arranged at one end close to the abutting part 2320; therefore, the center of gravity of the second opening and closing member 230 is located on one side of the second driving part 2330; when the second opening and closing part is driven to open the cover plate 110, the second opening and closing member 230 can rotate into the receiving groove 100 by its own gravity, and the second opening and closing member 230 abuts against the cover plate 110 and is in the same plane as the outer surface of the cover plate 110. Of course, the second opening and closing part can also be reset by setting a spring.

[0029] Combined with Figure 2 , an elastic support member 40 is further provided on the limiting member 240. When the cover plate 110 is locked, the cover plate 110 abuts against the elastic support member 40; the elastic support member 40 can elastically support the cover plate 110 and play a buffering role to avoid direct collision between the cover plate 110 and the frame body 120, reduce the noise during closing, and at the same time can play a sealing role. Among them, the elastic support member 40 can be a sealing strip or a rubber strip, etc.

[0030] In some embodiments, a sealing sleeve 50 is further included, and the sealing sleeve 50 is sleeved on the outer side of the first opening and closing member 220. The sealing sleeve 50 can prevent impurities from entering from the outer side of the cover plate 110 to the inner side.

[0031] Combined with Figure 2 , a guiding and limiting structure is further included. The limiting member 240 includes a first limiting portion provided on the limiting member 240 and a second limiting portion provided on the locking portion 2120 for guiding the locking block 210 to be clamped or disengaged from the limiting member 240. In this embodiment, the first limiting portion is in a slope shape and the second limiting portion is in an arc shape, which is beneficial to locking or unlocking the cover plate 110. Of course, the first limiting portion can be an arc shape matching the second limiting portion.

[0032] It can be understood that during the movement of the second limiting portion into the first limiting portion, the elastic support member 40 is gradually compressed by the cover plate 110. The elastic support member 40 will exert an upward force on the cover plate 110, and this force acts on the limiting member 240 through the locking portion 2120, thereby ensuring that the second limiting portion abuts against the first limiting portion tightly and realizing the locking of the cover plate 110.

[0033] In some embodiments, since the cover plate 110 is in a vertical state after being opened, in order to prevent the opened cover plate 110 from closing by itself, a support member 70 is further provided. The support member 70 is used to support the opened cover plate 110 to prevent the cover plate 110 from closing by itself (such as shaking or being blown by sea breeze, etc.). Among them, the support member 70 can be a support rod.

Claims

1. A double-sided opening access hatch, characterized in that: It comprises a frame body, and a cover plate rotatably connected to the frame body on one side; The cover plate is provided with a double-sided opening and closing mechanism, which includes the locking block, a first opening and closing component located on the inner side of the cover plate, a second opening and closing component located on the outer side of the cover plate, and a limiting component provided on the frame body, which is used to cooperate with the locking block to lock the cover plate; The first opening and closing component is connected to the locking block and is used to drive the locking block to engage with or disengage from the limiting component to lock or open the cover from the inside; The second opening and closing component is used to push the locking block to separate from the limiting component and open the cover from the outside.

2. The double-sided opening access hatch cover according to claim 1, characterized in that: The locking block includes a first rotating part, and a locking part and a first driving part connected to the first rotating part, the first rotating part is rotatably connected to the cover plate, and the first driving part is connected to the first opening and closing component.

3. The double-sided opening access hatch cover according to claim 2, characterized in that: The length of the locking portion is smaller than the length of the first driving portion.

4. The double-side-openable access hatch cover according to claim 1, characterized in that: The second opening and closing portion includes a second rotating portion rotatably connected to the cover plate, and a driving plate arranged on the second rotating portion, wherein the driving plate can rotate around the second rotating portion to abut against the locking block, so that the locking block is separated from the limiting component.

5. The double-side-openable access hatch cover according to claim 4, characterized in that: The driving plate includes an abutting portion and a second driving portion, and the second rotating portion is arranged at one end close to the abutting portion.

6. The double-side-openable access hatch cover according to claim 1, characterized in that: The limiting component is also provided with an elastic support member, and when the cover plate is locked, the cover plate abuts against the elastic support member.

7. The double-side-openable access hatch cover according to claim 1, characterized in that: It also includes a guiding and limiting structure, which includes a first limiting portion arranged on the limiting component and a second limiting portion arranged at the end of the locking portion, for guiding the locking block to engage with or disengage from the limiting component.

8. The double-side-openable access hatch cover according to claim 1, characterized in that: The cover plate is provided with a receiving groove, and the first opening and closing component is arranged in the receiving groove.

9. The double-side-openable access hatch cover according to claim 1, characterized in that: It also includes a sealing sleeve, which is arranged on the outside of the first opening and closing component.

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