A hatch cover with see-through and self-locking functions
By installing a viewing hole and a self-locking device on the hatch cover, the problems of hatch cover rusting and internal darkness were solved, enabling convenient opening and self-locking, and ensuring operational safety and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CSSC QINGDAO BEIHAI SHIP CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-05-29
AI Technical Summary
The existing steel buoy hatch covers are difficult to open properly due to rust, and the interior is dark, making operation inconvenient. They also lack visibility and self-locking functions.
A hatch cover with a viewing hole and a self-locking function was designed. The hatch cover can be opened and locked easily through a flipping device and a stop pin. The viewing plate provides light, and corrosion-resistant materials and locks are used to prevent rust and seawater corrosion.
It enables convenient opening and self-locking of the hatch cover, provides internal lighting, facilitates operation, prevents the hatch cover from being opened arbitrarily and the lock from corroding, and ensures operational safety and equipment protection.
Smart Images
Figure CN224297359U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine platform technology, and more particularly to the field of steel buoy construction technology, specifically referring to a hatch cover with transparent and self-locking functions. Background Technology
[0002] During the construction of the 10-meter steel buoy, a hatch cover needs to be installed at the top of the buoy mast to allow personnel to access the platform through the hatch to collect data and protect the instruments and equipment inside the buoy from being arbitrarily removed. Currently, the hatch cover mainly restricts rotation by using springs at the hinge or hinges inside the hatch cover. However, due to the long maintenance intervals of the hatch cover, the springs and hinges are prone to rust, affecting the normal opening by personnel. Furthermore, the hatch cover is a watertight cover, which is opaque, leaving the inside of the mast dark and hindering normal work for personnel.
[0003] Therefore, there is a need for a hatch cover with a see-through function that is easy for operators to open and can prevent the hatch cover from rotating after it is opened, thus achieving a self-locking mechanism. Utility Model Content
[0004] The main purpose of this utility model is to provide a hatch cover with transparent and self-locking functions to solve the problems of hatch covers being difficult to open after rusting and the interior of the mast being dark in the prior art.
[0005] To achieve the above objectives, this utility model provides a hatch cover with see-through and self-locking functions, including a hatch, a hatch cover with a handle that covers the top of the hatch, a flipping device and a stop pin. The hatch cover is rotatably connected to the hatch through the flipping device. A see-through hole is provided in the center of the hatch cover, and a see-through plate is installed at the see-through hole.
[0006] At least one tilting device is provided, which is located on one side of the hatch and hatch cover, and has a limiting hole that matches the stop pin.
[0007] Preferably, two tilting devices are provided, and the two tilting devices have the same structure, including a fixed plate, a rotating plate and a rotating shaft. The fixed plate is set on the outer wall of the hatch, and the rotating plate is set on the hatch cover.
[0008] Each flipping device has two fixed plates, and a rotating plate is set between the two fixed plates. The rotating plate is hinged to the fixed plates via a rotating shaft.
[0009] Preferably, the fixing plate is L-shaped.
[0010] Preferably, the rotating plate is elongated.
[0011] Preferably, on the rotating plate, a second limiting hole adapted to the stop pin is provided on the outer side of the hinge point; on the fixed plate, a first limiting hole adapted to the stop pin is provided at the position corresponding to the second limiting hole, and the first limiting hole and the second limiting hole coincide when the hatch is fully opened.
[0012] Preferably, a through hole is provided on the hatch near the edge of the hatch, a lock is provided in the through hole, and an L-shaped lock plate is provided at the bottom of the lock, with the lock plate rotatably connected to the lock.
[0013] Preferably, a lock cap is provided on the top of the lock, and the lock cap is threadedly connected to the lock body or the cover.
[0014] Preferably, the top of the lock cap is provided with a chain, and the other end of the chain is connected to the hatch.
[0015] Preferably, a sealing ring is provided between the hatch cover and the hatch opening.
[0016] Preferably, a chain is provided on one end of the stop pin, and the stop pin is connected to the flipping device by the chain.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] This utility model features a viewing hole on the hatch cover, which allows light to penetrate the mast, giving the hatch cover a viewing function. This facilitates workers to perform related tasks inside and better ensures the safety of the operators.
[0019] This utility model is equipped with a flipping device, which has a simple structure, is easy to process, has a long service life, and facilitates the opening and closing of the hatch.
[0020] This utility model is equipped with a stop pin that is compatible with the flipping device, which makes it easy to fix the hatch after it is opened and lock the rotation of the hatch, so that the hatch cover has a self-locking function.
[0021] This utility model is equipped with a lock and a lock cap, which not only protects the internal instruments of the buoy from being taken away at will, but also prevents seawater from entering the lock cylinder and corroding it, thus preventing leakage. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:
[0023] Figure 1 This is a structural schematic diagram of the hatch of this utility model in the closed state;
[0024] Figure 2 for Figure 1 Top view;
[0025] Figure 3 This is a structural schematic diagram of the hatch of this utility model in the open state.
[0026] The reference numerals in the above figures are as follows:
[0027] 1. Hatch opening; 2. Hatch cover; 21. Viewing hole; 22. Viewing plate; 3. Tilting device; 31. Fixing plate; 32. Rotating plate; 33. Rotating shaft; 34. Limiting hole; 341. First limiting hole; 342. Second limiting hole; 4. Stop pin; 5. Locking plate; 6. Locking cap; 7. Handle. Detailed Implementation
[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] like Figure 1 , Figure 2 and Figure 3 The hatch cover shown has a transparent and self-locking function, including a hatch 1 and a hatch cover 2 with a handle that covers the top of the hatch 1, a flipping device 3 and a stop pin 4. The hatch cover 2 is rotatably connected to the hatch 1 through the flipping device 3. A transparent hole 21 is provided at the center of the top of the hatch cover 2, and a transparent plate 22 is installed at the transparent hole 21.
[0030] At least one tilting device 3 is provided, located on one side of hatch 1 and hatch cover 2. Hatch 1 and hatch cover 2 are rotatably connected via the tilting device 3. The tilting device 3 is provided with a limiting hole 34 that matches the stop pin 4. Hatch cover 2 is a watertight hatch cover 2, and hatch 1 is an opening protruding from the platform or deck, welded onto the platform or deck. Relevant personnel enter the mast or access another platform through hatch 1. The stop pin 4 cooperates with the limiting hole 34. By inserting the stop pin 4 into the limiting hole 34, the rotation of hatch cover 2 is prevented, giving the hatch cover a self-locking function.
[0031] Specifically, the viewing panel 22 is made of acrylic sheet and is fixed to the top of the hatch cover 2 with waterproof adhesive. The viewing panel 22 covers the viewing hole 21, and the viewing hole 21 enables the hatch cover to be transparent. Light passes through the viewing panel 22 to provide illumination to the inside of the mast, facilitating related operations by personnel inside the mast. It also facilitates personnel to open the hatch cover 2 from the inside and pass through the hatch cover to reach the small platform when climbing the ladder to the top platform.
[0032] Specifically, such as Figure 2 As shown, two tilting devices 3 are provided, and the two tilting devices 3 have identical structures. The two tilting devices 3 are located on the same side of the hatch 1, symmetrical with respect to the central axis of the hatch cover 2 and the hatch 1. Each tilting device 3 includes a fixed plate 31, a rotating plate 32, and a rotating shaft 33. The fixed plate 31 is located on the outer wall of the hatch 1, and the rotating plate 32 is located on the outer surface of the hatch cover 2. Each tilting device 3 has two fixed plates 31, and the rotating plate 32 is located between the two fixed plates 31. The rotating plate 32 is hinged to the fixed plate 31 via the rotating shaft 33, which is located on the upper part of the fixed plate 31. The fixed plate 31 is welded to the outer wall of the hatch 1, and the rotating plate 32 is welded to the outer surface of the hatch cover 2. The fixed plate 31, rotating plate 32, and rotating shaft 33 are all made of corrosion-resistant stainless steel. The rotating shaft 33 is a rotating pin that connects the rotating plate 32 and the fixed plate 31, allowing the hatch cover 2 to rotate relative to the hatch 1.
[0033] Specifically, such as Figure 1 and Figure 3 As shown, the fixed plate 31 is L-shaped. The rotating shaft 33 is located on the top of the fixed plate 31, and the rotating plate 32 rotates along the rotating shaft 33.
[0034] Specifically, the rotating plate 32 is elongated. After the hatch 2 is opened, the end of the rotating plate 32 away from the hatch 2 is locked onto the outer wall of the hatch 1.
[0035] Specifically, the rotating plate 32 is hinged to the fixed plate 31, and the fixed plate 31 and the rotating plate 32 are provided with limiting holes 34 that are adapted to the stop pin 4.
[0036] Specifically, on the rotating plate 32, a second limiting hole 342 adapted to the stop pin 4 is provided on the outer side of the hinge point; on the fixed plate 31, a first limiting hole 341 adapted to the stop pin 4 is provided at a position corresponding to the second limiting hole 342. When the hatch 2 is fully opened, the first limiting hole 341 and the second limiting hole 342 coincide. When the hatch 2 is fully opened, the end of the rotating plate 32 not on the hatch 1 presses against the outer wall of the hatch 1, the first limiting hole 341 and the second limiting hole 342 coincide, and the stop pin 4 is inserted into the coincident first limiting hole 341 and the second limiting hole 342. After the stop pin is inserted into the limiting hole 34, force is applied here, locking the rotation of the hatch 2, so that the hatch cover has a self-locking function.
[0037] Specifically, the stop pin 4 is made of stainless steel, and a chain is provided on one end of the stop pin 4. The stop pin 4 is connected to the flipping device 3 by the chain.
[0038] Specifically, the end of the chain that is not connected to the stop pin 4 is welded to the fixed plate 31.
[0039] Specifically, the handle 7 is made of round steel and welded to the side of the hatch cover 2 to facilitate the opening of the hatch cover by the staff.
[0040] Specifically, the handle 7 is located on the side of the hatch 2 opposite to the tilting device 3.
[0041] Specifically, such as Figure 2 As shown, a through hole is provided on the hatch 2 near its edge, and a lock is installed inside the through hole. An L-shaped lock plate 5 is installed at the bottom of the lock, and the lock plate 5 is rotatably connected to the lock. A baffle adapted to the lock plate 5 is provided on the inner side of the top of the hatch 1. After the hatch 2 is closed and the lock is tightened, the lock plate 5 engages with the baffle. The lock on the hatch is to prevent unauthorized opening of the hatch 2 and entry into the hatch.
[0042] Specifically, a steel plate is installed on the inner wall of hatch 1, corresponding to the position of the locking plate 5, and the steel plate is wedged obliquely on hatch 1. After the lock is tightened, the locking plate 5 rests against the oblique surface of the steel plate to prevent anyone from opening hatch 2 at will.
[0043] Specifically, a lock cap 6 is provided at the top of the lock, and the lock cap 6 is threadedly connected to the lock body or the hatch 1. A chain is provided at the top of the lock cap 6, and the end of the chain not connected to the lock cap 6 is welded to the top of the hatch 2. By providing a chain between the lock cap 6 and the hatch 2, the lock cap 6 is prevented from being lost. When the lock cap 6 is connected to the lock body, the outer wall of the lock body and the inner wall of the lock cap are provided with matching threads; when the lock cap 6 is connected to the hatch 2, the outer wall of the lock cap and the through hole of the hatch 2 are provided with matching threads. By providing the lock cap 6 at the top of the lock, and the lock cap 6 being threadedly connected to the lock or the hatch 2, seawater can be prevented from soaking the lock cylinder and from corroding the lock cylinder.
[0044] Specifically, a sealing ring is provided between the hatch cover 2 and the hatch opening 1. The hatch cover 2 is provided with a sealing ring groove, and the sealing ring is clamped in the sealing ring groove of the hatch cover 2 to separate the hatch opening 1 and the hatch cover 2, and to play a role in buffering, shock absorption and sealing.
[0045] The specific working state of the hatch cover with transparent and self-locking functions provided by this utility model is as follows:
[0046] When installing the hatch cover, first weld the fixing plate 31 of the tilting device 3 to the side of the hatch 1. Then, drill a hole at an appropriate position on the hatch cover 2, adjust the size of the viewing hole 21 as needed, and install the viewing plate 22. Select a suitable lock cylinder and lock plate 5, and install the lock into the through hole by welding. At the same time, weld the handle 7 on, and insert the sealing ring or sealing strip into the sealing ring groove of the hatch cover 2. After processing, press the hatch cover 2 onto the hatch 1, and then tighten the lock. After tightening, weld the rotating plate 32 to the hatch cover 2 in the position corresponding to the fixing plate 31, install the lock cap 6, and fix the lock cap 6 to the hatch cover 2 by the chain. A hole is made at the contact point between the fixed plate 31 and the rotating plate 32, and the rotating shaft 33 is installed. The lock is opened with a key, and then the hatch cover 2 is fully opened so that the end of the rotating plate 32 away from the hatch cover 2 contacts the outer wall of the hatch 1. A hole is made at the appropriate point where the fixed plate 31 and the rotating plate 32 overlap, and a stop pin 4 is inserted to lock the rotation of the hatch cover 2, thereby achieving self-locking of the hatch cover. Then, the stop pin 4 is fixed to the hatch 1 by a chain.
[0047] After installation, close hatch 2, tighten the lock, fasten the lock cap 6, and conduct the corresponding airtightness test according to the airtightness requirements of the hatch cover.
[0048] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A hatch cover with see-through and self-locking functions, characterized in that, It includes a hatch, a hatch cover with a handle that covers the top of the hatch, a flipping device and a stop pin. The hatch cover is rotatably connected to the hatch via the flipping device. A viewing hole is provided in the center of the hatch cover, and a viewing plate is installed at the viewing hole. At least one tilting device is provided, which is located on one side of the hatch and hatch cover, and a limiting hole adapted to the stop pin is provided on the tilting device.
2. A hatch cover with see-through and self-locking functions according to claim 1, characterized in that, There are two tilting devices, and the two tilting devices have the same structure, including a fixed plate, a rotating plate and a rotating shaft. The fixed plate is set on the outer wall of the hatch and the rotating plate is set on the hatch cover. Each flipping device has two fixed plates, and a rotating plate is set between the two fixed plates. The rotating plate is hinged to the fixed plates via a rotating shaft.
3. A hatch cover with see-through and self-locking functions according to claim 2, characterized in that, The fixing plate is L-shaped.
4. A hatch cover with see-through and self-locking functions according to claim 2, characterized in that, The rotating plate is elongated.
5. A hatch cover with see-through and self-locking functions according to claim 4, characterized in that, On the rotating plate, a second limiting hole adapted to the stop pin is provided on the outside of the hinge point; on the fixed plate, a first limiting hole adapted to the stop pin is provided at the position corresponding to the second limiting hole. When the hatch is fully opened, the first limiting hole and the second limiting hole coincide.
6. A hatch cover with see-through and self-locking functions according to claim 1, characterized in that, A through hole is provided on the hatch near the edge of the hatch, and a lock is provided in the through hole. An L-shaped lock plate is provided at the bottom of the lock, and the lock plate is rotatably connected to the lock.
7. A hatch cover with see-through and self-locking functions according to claim 6, characterized in that, The lock has a lock cap on top, which is threaded onto the lock body or the cover.
8. A hatch cover with see-through and self-locking functions according to claim 7, characterized in that, The top of the lock cap is equipped with a chain, and the other end of the chain is connected to the hatch.
9. A hatch cover with see-through and self-locking functions according to claim 1, characterized in that, A sealing ring is installed between the hatch cover and the hatch opening.
10. A hatch cover with see-through and self-locking functions according to claim 1, characterized in that, A chain is provided on one end of the stop pin, and the stop pin is connected to the flipping device by the chain.