Bilaterally openable access hatch

Abstract

The application discloses a double-side openable channel cabin cover, which comprises a frame body, a cover plate rotatably connected to the frame body, a double-side opening and closing mechanism arranged on the cover plate, a limiting component arranged on the frame body and used for locking or unlocking the cover plate, a first opening and closing component arranged on the inner side of the cover plate and connected to the locking block, and a second opening and closing component arranged on the outer side of the cover plate and used for driving the locking block to separate from the limiting component and open the cover plate from the outer side. The application has the advantages of simple structure, low manufacturing cost, high safety and the like. 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 the normal opening of the cover plate, and the safety is high, so that the personnel cannot be trapped in the cabin.

Description

Technical Field

[0001] This application relates to the field of marine technology, and in particular to a hatch cover that can be opened from both sides. Background Technology

[0002] Manhole covers (also known as manhole covers or cabin entrance / exit devices) are opening devices installed on the decks or bulkheads of enclosed compartments such as liquid tanks and isolation compartments on ships, for personnel to enter and exit for inspection or construction. They are important equipment for personnel to enter and exit enclosed compartments in ships and other means of transportation.

[0003] The existing hatch cover assembly and the vessel containing it, with publication number CN110053715A, uses handwheels on both sides of a locking shaft that runs through the cover plate. Turning the handwheels drives the locking assembly to lock or unlock the hatch from both inside and outside, making it easy to open the hatch. Although the hatch can be opened from both inside and outside, the inner and outer handwheels are linked by the locking shaft. When the outer handwheel is stuck, the hatch cannot be opened, and the personnel inside cannot leave. It also occupies a lot of space, is inconvenient to operate in narrow passages, and often requires a lot of force to open. The overall structure is complex and the manufacturing cost is high. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a dual-sided opening hatch cover with a simple overall structure, low manufacturing cost, and the ability to open or close from both the inner and outer sides. When opening the cover from the inner side, it is unaffected by external factors, ensuring that the inner side is always ready to be opened. The technical solution adopted is as follows: A double-sided opening passage hatch includes a frame and a cover plate rotatably connected to the frame 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 and a second opening and closing component located on the outer side of the cover plate, as well as a limiting component provided on the frame, 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 engage or disengage from the limiting component, thereby locking or opening the cover plate from the inside. The second opening and closing component is used to push the locking block away from the limiting component and open the cover plate from the outside.

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

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

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

[0008] More preferably, the drive plate includes an abutment portion and a second drive portion, wherein the second rotating portion is disposed at one end near the abutment portion.

[0009] Preferably, the limiting component is further provided with an elastic support member, which abuts against the elastic support member when the cover plate is locked.

[0010] Preferably, it further includes a guide limiting structure, which includes a first limiting part disposed on the limiting member and a second limiting part disposed at the end of the locking part, for guiding the locking block to engage or disengage from the limiting member.

[0011] Preferably, the cover plate is provided with a receiving groove, and the first opening and closing component is disposed in the receiving groove.

[0012] Preferably, it further includes a sealing sleeve, which is fitted over the outside of the first opening and closing component.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: (1) This application enables the hatch to be opened from both sides by driving the locking block through the first opening and closing component and the second opening and closing component. The overall structure is simple and the manufacturing cost is low.

[0014] (2) The second opening and closing component and the first opening and closing component are independently set. Therefore, when the first opening and closing component is driven from inside the cabin to open the cover, the second opening and closing component outside the cabin will not affect the normal opening of the cover by the first opening and closing component. The safety is high, ensuring that the first opening and closing component inside is always in a state where it can open the cover at any time, thus preventing people from being trapped in the cabin.

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

[0016] (4) Under normal conditions, the second opening and closing component can be stored in the receiving slot by its own weight, and will not protrude from the deck, thus avoiding affecting the activities of personnel on the deck. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the hatch when it is closed (the dotted line indicates the position when it is unlocked). Figure 2 This application Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the hatch structure when it is open, as per this application.

[0018] In the picture: 10. Hatch cover; 100. Receiving slot; 110. Cover plate; 120. Frame. 20. Double-sided 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, 50. Sealing sleeve, 60. Channel, 70. Support component. Detailed Implementation

[0019] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] See Figures 1 to 3 Further explanation of this application: Combination Figure 1 and Figure 3 The passage hatch, which can be opened from both sides, includes a frame 120 fixed on the deck 30 and a cover plate 110 rotatably connected to the frame 120 on one side; the frame 120 is provided with a passage 60 for personnel to pass through.

[0021] The cover plate 110 is provided with a double-sided opening and closing mechanism 20. The double-sided opening and closing mechanism 20 includes the locking block 210, a first opening and closing component 220 located inside the cover plate 110 and a second opening and closing component 230 located outside the cover plate 110, and a limiting component 240 provided on the frame 120, which is used to cooperate 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 second opening and closing component 230 is driven to push the locking block 210 away from the limiting component 240, thereby opening the cover plate 110 from the outside.

[0023] This application enables the double-sided opening and closing mechanism 20 to open or close the cover 110 from both sides. When the first opening and closing component 220 is driven from inside the cabin to open the cover 110, the second opening and closing component 230 outside the cabin will not affect the first opening and closing component 220 from opening the cover 110 normally. This ensures high safety and ensures that the first opening and closing component 220 on the inside is always in a state where the cover can be opened at any time, thus preventing personnel from being trapped inside the cabin. In addition, the overall structure is simple and the manufacturing cost is low.

[0024] Combination 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. The locking block 210 is generally V-shaped.

[0025] In order to unlock or release the cover plate 110 more easily, 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 the support point. The locking part 2120 is driven to disengage from the limiting component 240 by lever principle. Therefore, it is more convenient and less strenuous to open the cover plate 110 by driving the first opening and closing component 220.

[0026] Combination Figure 2 The second opening / closing part includes a second rotating part 2310 rotatably connected to the cover plate 110, and a driving plate disposed on the second rotating part 2310. The driving plate can rotate around the second rotating part 2310 to abut against the locking block 210, causing the locking block 210 to disengage from the limiting member 240. The driving plate includes an abutment part 2320 and a second driving part 2330. The second rotating part is disposed at one end near the abutment part 2320. When the second driving part 2330 is driven, the abutment part 2320 rotates around the rotational support point of the second rotating part 2310, abutting against the first driving part 2130 and pushing the locking part 2120 to rotate. The second opening / closing member 230 utilizes the lever principle to unlock the cover plate 110, making opening easier and more convenient.

[0027] Combination Figure 2To prevent the second opening / closing component 230 from protruding from the deck 30 and affecting personnel activities, the cover plate 110 is provided with a receiving groove 100, and the first opening / closing component 220 is disposed in the receiving groove 100. The receiving groove 100 is located on the outside of the cover plate 110 to accommodate the second opening / closing component 230, ensuring that the second opening / closing component 230 will not protrude when the cover plate 110 is in the locked state (closed state).

[0028] Since the second rotating part is located at one end near the abutting part 2320, 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 member 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 member can also be reset by setting a spring.

[0029] Combination Figure 2 The limiting component 240 is also provided with an elastic support member 40. 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, avoiding direct collision between the cover plate 110 and the frame 120, reducing noise when closing, and also playing a sealing role. The elastic support member 40 can be a sealing strip or rubber strip, etc.

[0030] In some embodiments, a sealing sleeve 50 is further included, which is fitted over the outside of the first opening / closing member 220. The sealing sleeve 50 can prevent impurities from entering the inside from the outside of the cover plate 110.

[0031] Combination Figure 2 It also includes a guide and limiting structure. The limiting component 240 includes a first limiting portion disposed on the limiting component 240 and a second limiting portion disposed on the locking portion 2120, for guiding the locking block 210 to engage or disengage from the limiting component 240. In this embodiment, the first limiting portion is sloped and the second limiting portion is arc-shaped, which is beneficial for locking or unlocking the cover plate 110. Of course, the first limiting portion can be an arc shape that matches the second limiting portion.

[0032] It is understandable that as the second limiting part moves into the first limiting part, the elastic support member 40 is gradually compressed by the cover plate 110. The elastic support member 40 exerts an upward force on the cover plate 110. This force is applied to the limiting member 240 through the locking part 2120, thereby ensuring that the second limiting part is pressed against the first limiting part and locking the cover plate 110.

[0033] In some embodiments, since the cover plate 110 is in a vertical position after being opened, a support member 70 is provided to prevent the opened cover plate 110 from closing on its own. The support member 70 is used to support the opened cover plate 110 and prevent the cover plate 110 from closing on its own (such as causing shaking or being blown by sea breeze). The support member 70 may be a support rod.

Claims

1. A hatch that can be opened from both sides, characterized in that: Includes a frame and a cover plate rotatably connected to one side of the frame; The cover plate is provided with a double-sided opening and closing mechanism, which includes a locking block, a first opening and closing component located on the inner side of the cover plate and a second opening and closing component located on the outer side of the cover plate, as well as a limiting component provided on the frame, 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 engage or disengage from the limiting component, thereby locking or opening the cover plate from the inside. The second opening and closing component is used to push the locking block away from the limiting component and open the cover plate from the outside; The locking block includes a first rotating part, a locking part and a first driving part connected to the first rotating part, the first rotating part being rotatably connected to the cover plate, and the first driving part being connected to the first opening and closing component; The second opening and closing part includes a second rotating part rotatably connected to the cover plate, and a drive plate disposed on the second rotating part. The drive plate can rotate around the second rotating part to abut against the locking block, so that the locking block disengages from the limiting member.

2. The double-sided opening hatch according to claim 1, characterized in that: The length of the locking part is less than the length of the first driving part.

3. The double-sided opening hatch according to claim 1, characterized in that: The drive plate includes an abutment portion and a second drive portion, with the second rotating portion located at one end near the abutment portion.

4. The double-sided opening hatch according to claim 1, characterized in that: The limiting component is also provided with an elastic support member. When the cover plate is locked, the cover plate abuts against the elastic support member.

5. The double-sided opening hatch according to claim 1, characterized in that: It also includes a guide limiting structure, which includes a first limiting part provided on the limiting component and a second limiting part provided at the end of the locking part, for guiding the locking block to engage or disengage from the limiting component.

6. The double-sided opening hatch according to claim 1, characterized in that: The cover plate is provided with a receiving groove, and the first opening and closing component is disposed in the receiving groove.

7. The double-sided opening hatch according to claim 1, characterized in that: It also includes a sealing sleeve, which is fitted over the outside of the first opening and closing component.

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