Anchor chain locker sewage manhole cover

Abstract

The present invention relates to a sewage manhole cover for an anchor chain locker, comprising a bottom plate, a top plate, a horizontal bevel gear and a vertical bevel gear; a plurality of manholes for personnel entry and exit are arranged at equal angles around the center of the bottom plate, and water holes are opened in the remaining parts; a plurality of large openings equal to the number of the manholes are arranged at equal angles around the center of the top plate, and water holes are also opened in the remaining parts; a horizontal bevel gear is fixedly connected to the bottom of the top plate, a prefabricated meshing vertical bevel gear is provided on the side of the horizontal bevel gear, a ratchet gear is provided on the rotating shaft of the vertical bevel gear, a rod with a pawl that cooperates with the ratchet gear passes vertically through the top plate, the top of the rod is fixedly connected to a pedal, and a pull ring is provided on the pedal; the top plate and the horizontal bevel gear are limited in a pair of horizontal limit plates; the bottom plate and the top plate are coaxially arranged and fixed below the top plate by a fixed axis, and the top plate and the horizontal bevel gear can rotate around the fixed axis.

Description

Technical Field

[0001] The invention relates to a chain locker sewage well cover plate, belonging to the technical field of ship design. Background Art

[0002] When a ship is moored, an anchor connected to a chain or cable is dropped into the water. The anchor's grip connects to the bottom of the water, securing the ship securely in place through the chain. When the ship is ready to sail, the chain must be retrieved to free the anchor from the water. The main purpose of a chain locker is to store the recovered chain. A chain locker is a compartment located below and behind the ship's windlass, specifically for storing anchor chain. It is typically located in front of the bow collision bulkhead and comes in either cylindrical or square shapes. When the anchor chain is just returned to the deck from the bottom of the water and then flushed, there will still be residual water and sludge when the anchor chain is retracted into the anchor chain locker. Under normal circumstances, a sewage well will be set at the bottom of the anchor chain locker, and there will be a cover plate on the top of the sewage well to separate the sewage well and the anchor chain locker so as to collect the sludge and water brought into the cabin by the anchor chain. The conventional cover plate design is a combination structure of a fixed perforated plate and a movable sieve plate with water holes. The reason for designing it as a movable sieve plate is that when the ship is anchored and the anchor chain is fully released, the crew can go down to the bottom of the anchor chain locker, open the sieve plate, and enter the sewage well for cleaning operations. Figure 1 shown.

[0003] The production of this kind of sewage manhole cover is more troublesome. First, a conventional perforated plate is made, and then several corresponding plates are made according to the size and shape of each opening of the first perforated plate. Some water holes are opened on these plates, and several sieve plates are made. In order to prevent these sieve plates from moving sideways, some round steel or square steel is set around each sieve plate on the perforated plate, so that the sieve plates can be limited. Figure 1 shown.

[0004] In actual operation, this solution has great inconvenience and shortcomings. Since the correct way to open this sieve plate is to use tools to pry it up from the hole, conventional sewage cleaning personnel need to carry tools to pry up the sieve plate and enter the anchor chain locker. For large ships, the anchor chain locker is small and deep. Carrying a crowbar can easily make personnel inconvenient to move and increase the risk of injury. When personnel go down to the sewage manhole cover at the bottom of the anchor chain locker, because the sieve plate is relatively large and heavy, it is difficult for a single person to pry it up with tools. Sometimes it is difficult to move a large sieve plate out of the hole. Considering that there may be sewage and sludge at the bottom of the anchor chain locker, the environment is relatively harsh, which increases the difficulty and danger of personnel operation. In addition, the round steel or square steel arranged around each opening is also at risk of being damaged by the anchor chain and may fail over time. Summary of the Invention

[0005] The purpose of the present invention is to provide a chain locker sewage well cover, which can be opened conveniently and quickly to provide a passage for crew members to go down without auxiliary tools, saving time and effort, and is non-hazardous. It is convenient to clean the sewage and dirt in the sewage well below without affecting the storage of the anchor chain above.

[0006] The present invention adopts the following technical solutions:

[0007] A chain locker sewage manhole cover, comprising a bottom plate 2, a top plate 1, a horizontal bevel gear 6, and a vertical bevel gear 7; a number of manholes for personnel entry and exit are arranged on the bottom plate 2 at equal angles around the center, and water holes are opened in the remaining parts; a number of large openings equal to the number of the manholes are arranged on the top plate 1 at equal angles around the center, and water holes are also opened in the remaining parts; a horizontal bevel gear 6 is fixedly connected to the bottom of the top plate 1, and a prefabricated meshing vertical bevel gear 7 is provided on the side of the horizontal bevel gear 6. A ratchet gear 8 is provided on the rotating shaft of the vertical bevel gear 7, and the top plate 1 vertically passes through a rod 13 with a pawl 10 that cooperates with the ratchet gear 8. The top of the rod 13 is fixedly connected to a pedal 9, and the pedal 9 is provided with a pull ring 12; the top plate 1 and the horizontal bevel gear 6 are limited in a pair of horizontal limit plates; the bottom plate 2 and the top plate 1 are coaxially arranged and fixed to the bottom of the top plate 1 by a fixed shaft 3, and the top plate 1 and the horizontal bevel gear 6 can rotate around the fixed shaft 3.

[0008] Preferably, a flat steel 14 is provided downwardly on the free edge of the large opening of the top plate 1 to prevent the anchor chain from entering the gap between the bottom plate 2 and the top plate 1 .

[0009] Preferably, a ring-shaped support plate 15 for supporting the top plate 1 is fixedly provided along the chain locker bulkhead.

[0010] Preferably, the manhole is square with arc chamfers, and the large opening is U-shaped and extends to the edge of the top plate.

[0011] Furthermore, four manholes and four large openings are provided, and adjacent ones are spaced 90 degrees apart.

[0012] Preferably, the bottom plate 2 and the top plate 1 are both circular.

[0013] The beneficial effects of the present invention are that the top plate and the bottom plate can be completely produced in the production workshop using an automated process. During on-site construction, it is only necessary to weld the bottom plate and the anchor chain compartment bulkhead together, and then connect the top plate and the bottom plate together through rotating accessories. When in use, there is no need for auxiliary tools to pry open the sieve plate. The cover plate can be opened conveniently, quickly, and time-savingly to enter the sewage well for cleaning operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan view of a conventional chain locker sewage manhole cover in the prior art.

[0015] Figure 2 It is an exploded plan view of the bottom plate and top plate of the chain locker sewage manhole cover of the present invention.

[0016] Figure 3 This is a schematic diagram of the chain locker sewage manhole cover in the closed state after the bottom plate and top plate are combined.

[0017] Figure 4 This is a schematic diagram of the chain locker sewage manhole cover in the open state after the bottom plate and top plate are combined.

[0018] Figure 5 It is a schematic diagram of gear transmission.

[0019] Figure 6 yes Figure 5 AA section view in.

[0020] Figure 7 yes Figure 5 B-direction view in.

[0021] Figure 8 yes Figure 6 Schematic diagram of the VIEWA perspective.

[0022] In the figure, 100. Movable sieve plate, 102. Limiting round steel / square steel, 103. Sewage tank partition, 1. Top plate, 2. Bottom plate, 3. Fixed shaft, 4. Upper limit plate, 5. Lower limit plate, 6. Horizontal bevel gear, 7. Vertical bevel gear, 8. Ratchet gear, 9. Pedal, 10. Pawl, 11. Gear fixing rod, 12. Pull ring, 13. Rod, 14. Flat steel, 15. Annular support plate. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] In traditional designs, sewage manhole covers are relatively troublesome to manufacture, as the perforated plate and several sieve plates must be manufactured separately. Furthermore, the construction is also relatively troublesome, as some round steel or square steel must be arranged around the perforated plate, which is time-consuming and labor-intensive. In traditional solutions, pollution cleaning personnel need to use a crowbar to enter the bottom of the chain locker, and in a dirty and slippery environment, manually pry up the sieve plate weighing fifty to sixty kilograms. This is not only inconvenient in terms of movement, but also places high demands on the operator's physical fitness and is very dangerous. The present invention, through the following embodiments, elaborates on how to solve the above-mentioned defects. The top plate and the bottom plate can be completely produced in the production workshop using an automated process. During on-site construction, it is only necessary to weld the bottom plate and the chain locker bulkhead together, and then connect the top plate and the bottom plate together by rotating the decoration. When in use, no auxiliary tools are needed to conveniently, quickly, and save time and effort to open the cover plate and enter the sewage well for pollution cleaning operations.

[0025] The following introduces the design of this new type of chain locker sewage manhole cover. Figure 2 This is a sub-view of the improved cover:

[0026] The present invention consists of three parts. One part is the bottom plate, which is welded to the bulkhead of the anchor chain locker, with transverse and longitudinal partitions arranged below, and large openings and water holes arranged above. Figure 2 As shown on the left. The second part is the top plate, as Figure 2 As shown on the right, the top plate is also equipped with large openings and water holes. The top plate is placed directly above the bottom plate, with an opening in its center through which the fixed shaft passes. The top plate's position is constrained by an upper limit plate above the top plate and a lower limit plate below the top plate. The third part is the gear transmission mechanism, consisting of two gear components. The fixed shaft of the gear transmission mechanism is welded to the center of the bottom plate and connected to the top plate. The bottom plate and fixed shaft remain stationary at all times.

[0027] When the ship's chain locker is storing the anchor chain, in order to ensure that the sewage well cover at the bottom of the chain locker can serve as a storage for the anchor chain, the top plate needs to be kept in a position so that the anchor chain will not fall into the sewage well. To achieve this effect, after measurement, the initial position is a position rotated 45 degrees relative to the bottom plate. At this time, the top plate and the bottom plate just form a certain angle, so that the large opening on the bottom plate can be blocked by the water hole area of ​​the top plate, and the large opening on the top plate is blocked by the water hole area of ​​the bottom plate. In this way, the two can achieve normal storage of the upper anchor chain. Figure 3 shown.

[0028] When the crew cleans the chain locker, they can open the sewage well cover and enter the sewage well at the bottom of the chain locker to clean the sewage. In order to allow the crew to enter the sewage well through the sewage well cover, the top plate is driven to rotate to a certain position so that the large opening on the bottom plate and the large opening on the top plate are aligned and kept in this position. The crew can carry out the sewage cleaning operation through the large opening on the sewage well cover. Figure 4 shown.

[0029] The following focuses on the transmission structure between the top plate and the bottom plate. The gear transmission mechanism located at the center of the bottom plate and the top plate Figure 5-6 shown.

[0030] Continue to see Figure 5-8 , the specific parts of the present invention include:

[0031] The bottom plate 2 is welded to the periphery of the anchor chain locker, and the rotating shaft 3 is connected to the bottom plate 2 by welding. The rotating shaft 3 is provided with an upper limit plate 4 and a lower limit plate 5 at two different heights from the bottom plate 2. The top plate 1 is arranged at a certain height above the bottom plate 2. The horizontal bevel gear 6 is located in the central position of the lower side of the top plate 1 and is welded to the top plate 1. The rotating shaft 3 passes through the opening at the center of the top plate 1 and the horizontal bevel gear 6 to limit the horizontal displacement of the top plate 1 and the horizontal bevel gear 6. The upper limit plate 4 and the lower limit plate 5 are respectively provided at both ends of the combination of the top plate 1 and the horizontal bevel gear 6 to limit the vertical displacement of the top plate 1 and the horizontal bevel gear 6. The vertical bevel gear 7 is tightly engaged with the horizontal bevel gear 6 and can be linked. The gear 8 is connected to the vertical bevel gear 7 and rotates together around the gear fixing rod 11 connected to the top plate 1. The pedal 9 is connected to a rod 13 below, and a pull ring 12 is provided on the pedal 9. The operator can use his feet to move the rod 13 up and down through the pedal 9 and the pull ring 12. There is a pawl 10 on the rod 13. The shape and position of the pawl 10 are as follows: Figure 8 To prevent the anchor chain from entering the gap between the bottom plate 2 and the top plate 1, a flat steel 14 is provided at the free edge of the large opening, and to provide better support for the top plate when storing the anchor chain, a ring-mounted support plate 15 is arranged along the anchor chain locker bulkhead, as shown in FIG. Figure 7 shown.

[0032] The specific principles of the present invention are as follows:

[0033] The crew goes down to the sewage manhole cover at the bottom of the chain locker through the manhole on the side wall of the chain locker and stands on the top plate. At this time, the combined plate is in a closed state. Figure 3 As shown, the crew stands in the water hole area of ​​the top plate, and by stepping on the pedal 9, the rod 13 moves downward, driving the ratchet 10 to move downward as well, and the gear 8 rotates around the gear fixing rod 11 on the top plate 1. Since the gear 8 is connected to the vertical bevel gear 7, the vertical bevel gear 7 also rotates around the gear fixing rod 11 on the top plate 1. Since the vertical bevel gear 7 is tightly engaged with the horizontal bevel gear 6 and can be linked, the horizontal bevel gear 6 also rotates. Since the horizontal bevel gear 6 is welded to the top plate 1, the top plate 1 will also be rotated. After completing a pedaling operation to rotate the top plate 1 by a small angle, the crew lifts their foot. Due to the presence of the pull ring 12, the pedal 9 can return to the highest point. Next, through multiple pedaling and lifting operations, the top plate 1 can be rotated little by little until the combined plate of the cover and bottom plate reaches the open state. At this time, the crew can enter the sewage well through the large opening aligned with the top and bottom plates to clean the sewage. Figure 4 shown.

[0034] After the crew completes the cleaning operation, they go up to the sewage manhole cover and continuously step on and lift the pedal 9 until the top plate 1 rotates into place little by little, and the combination plate of the cover and the bottom plate reaches a closed state. Figure 3As shown, at this moment, the chain locker has restored the function of storing the anchor chain. When opening again, again continuously stop pedal and lift pedal 9, the rotation direction of top plate is inconvenient, continue to rotate 45 ° in the same direction, the manhole is opened again.

[0035] In summary, the current mainstream solution is to separate the chain locker from the sewage well at the bottom by setting a cover plate, which consists of a bottom plate and several sieve plates. When passing through, the sieve plates need to be pried open with a crowbar to reach the sewage well. However, in practice, there are many problems and dangers. Compared with the traditional solution, the top and bottom plates of the present invention can be completely produced in the production workshop using an automated process. During on-site construction, it is only necessary to weld the bottom plate to the chain locker bulkhead and then connect the top and bottom plates together by rotating the decoration. When in use, no auxiliary tools are required to open the cover plate conveniently, quickly, and save time and effort to enter the sewage well for cleaning operations.

[0036] The above are preferred embodiments of the present invention. Those skilled in the art may make various changes or improvements based on the above. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. A chain locker sewage manhole cover, characterized by: It comprises a bottom plate (2), a top plate (1), a horizontal bevel gear (6), and a vertical bevel gear (7); a plurality of manholes for people to enter and exit are arranged at equal angles around the center of the bottom plate (2), and water holes are provided in the remaining parts; The top plate (1) is provided with a number of large openings equal to the number of the manholes at equal angles around the center, and water holes are also provided at other locations; The bottom of the top plate (1) is fixedly connected to a horizontal bevel gear (6), and a prefabricated meshing vertical bevel gear (7) is provided on the side of the horizontal bevel gear (6). A ratchet gear (8) is provided on the rotating shaft of the vertical bevel gear (7). The top plate (1) vertically passes through a rod (13) with a ratchet pawl (10) that cooperates with the ratchet gear (8). The top of the rod (13) is fixedly connected to a pedal (9), and a pull ring (12) is provided on the pedal (9); The top plate (1) and the horizontal bevel gear (6) are limited in a pair of horizontal limiting plates; The bottom plate (2) and the top plate (1) are coaxially arranged and fixed below the top plate (1) via a fixed shaft (3). The top plate (1) and the horizontal bevel gear (6) can rotate around the fixed shaft (3). A flat steel (14) is provided downwardly on the free edge of the large opening of the top plate (1) to prevent the anchor chain from entering the gap between the bottom plate (2) and the top plate (1). A ring-shaped support plate (15) is fixedly arranged along the chain locker bulkhead for supporting the top plate (1); The manhole is square with arc chamfers, and the large opening is U-shaped and extends to the edge of the top plate.

2. The chain locker sewage manhole cover according to claim 1, characterized in that: There are four manholes and four large openings, each of which is 90 degrees away from the adjacent ones.

3. The chain locker sewage manhole cover according to claim 1, characterized in that: The bottom plate (2) and the top plate (1) are both circular.

Images