Optimized inward-inclined hatch coaming structure
The inverted hatch enclosure structure solves the cargo accumulation problem caused by hatch enclosure, and achieves the effect of simplifying loading and unloading operations and reducing construction costs.
Patent Information
- Application Number
- CN202422618447.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The existing ship hatch enclosure structure causes cargo to accumulate easily during loading and unloading, affecting the quality of the cargo and increasing the difficulty of construction and maintenance, and existing protective measures increase construction costs.
The inclined hatch enclosure structure is adopted, and the longitudinal and transverse hatch enclosures are arranged inclined. The hatch corner area is hidden outside the hatch to avoid cargo accumulation and simplify the construction process.
Reduce manual workload and unloading operations, simplify dock operation procedures, reduce construction costs, and avoid the use of additional protective structures.
Smart Images
Figure CN223148629U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, in particular to an optimized inward-tilting hatch coaming structure. Background Art
[0002] Currently, the conventional longitudinal and transverse hatch coaming plates of ships are vertically arranged. After the transverse and longitudinal hatch coaming plates cross, dead corner areas that are prone to cargo accumulation are formed. Especially when the ship loads bulk goods such as grains, coal, and metal ores, it is always found that there is residual cargo during the loading and unloading operations, resulting in cargo pollution or admixture of impurities, thus affecting the quality of the goods loaded in the next batch.
[0003] Generally, during ship construction, before completion, cement is filled in this dead corner area to relieve the problem of cargo accumulation. However, due to the high humidity in the ship operation environment, high frequency and large volume of loading and unloading operations, over time, the cement shows phenomena such as powdering and shedding, causing additional impact on the cargo quality.
[0004] Some ships are provided with fixed or foldable unloading plates above the hatch corner plates, and semi-circular steel and its corresponding support structures are arranged at the edge or below the hatch corner plates, aiming to facilitate unloading and prevent the grab wire rope from wearing the corner plates and protect them. However, these structural forms cannot completely avoid cargo accumulation, increasing the difficulties of construction and maintenance, and also increasing the construction cost. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects existing in the prior art and provide an optimized inward-tilting hatch coaming structure.
[0006] The utility model solves the above technical problem through the following technical solutions:
[0007] An optimized inward-tilting hatch coaming structure includes a longitudinal hatch coaming plate and a transverse hatch coaming plate arranged at the top of the cargo hold; both the longitudinal hatch coaming plate and the transverse hatch coaming plate are inclined towards the cargo hold, the top of the longitudinal hatch coaming plate is closer to the ship center line than the bottom of the longitudinal hatch coaming, and the top of the transverse hatch coaming plate is closer to the center vertical line of the cargo hold than the bottom of the transverse hatch coaming plate.
[0008] Furthermore, the area of the region surrounded by the top of the longitudinal hatch coaming plate and the top of the transverse hatch coaming plate is smaller than the area of the region surrounded by the bottom of the longitudinal hatch coaming plate and the bottom of the transverse hatch coaming plate.
[0009] Furthermore, a corner plate is provided at the connection of the longitudinal hatch coaming plate and the transverse hatch coaming plate.
[0010] Further, the vertical projection lines of the top of the longitudinal hatch coaming and the top of the transverse hatch coaming form a hatch projection line; the vertical projection line of the edge of the corner plate is located outside the hatch projection line.
[0011] Further, the edge of the corner plate is an arc or an elliptical arc.
[0012] Further, the angle between the longitudinal hatch coaming and the longitudinal vertical plane is the longitudinal coaming inclination angle; the angle between the transverse hatch coaming and the transverse vertical plane is the transverse coaming inclination angle; both the longitudinal coaming inclination angle and the transverse coaming inclination angle are acute angles.
[0013] Further, the longitudinal coaming inclination angle is 3° to 20°; the transverse coaming inclination angle is 3° to 20°.
[0014] Further, the longitudinal coaming inclination angle is equal to the transverse coaming inclination angle.
[0015] Further, the relationship between the longitudinal coaming inclination angle and the height of the longitudinal hatch coaming is that the value of the longitudinal coaming inclination angle decreases as the height of the longitudinal hatch coaming increases.
[0016] Further, the relationship between the transverse coaming inclination angle and the height of the transverse hatch coaming is that the value of the transverse coaming inclination angle decreases as the height of the transverse hatch coaming increases.
[0017] The beneficial effects of the present utility model are as follows: The optimized hatch coaming structure of the present utility model adopts an inward-inclined structure for both the longitudinal hatch coaming and the transverse hatch coaming. The hatch corner area is hidden outside the hatch, which does not pose an obstacle to the cargo loading operation at the hatch, is not prone to forming a cargo accumulation phenomenon, and can avoid cargo stacking; there is no need to adopt additional measures such as filling cement at the corner, which avoids the work of crew cleaning the hatch corner when the ship loads and unloads bulk cargo, reduces the manual workload of cargo loading and unloading operations, simplifies the quay operation process, and is beneficial to the loading and unloading operations. The optimized hatch coaming structure of the present utility model reduces the size of the hatch, which makes the area of the hatch cover smaller accordingly. Reducing the hatch cover area allows for the selection of a slightly smaller area hatch cover product during the ordering process, streamlining the hatch cover cost. The present utility model eliminates the structures such as unloading plates, wear-resistant round steel and its supports at the hatch corner, simplifies the construction process, and saves the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a top view of a preferred embodiment of the present utility model.
[0019] Figure 2 is Figure 1 the schematic view of the A-A cross-section in
[0020] Figure 3 is Figure 1 the schematic view of the B-B cross-section in
[0021] Figure 4 This is a schematic diagram of the bulkhead inclination angle of the preferred embodiment of the present utility model at three different bulkhead heights. Detailed implementation mode
[0022] The following is a preferred embodiment, and the present utility model will be described more clearly and completely in conjunction with the accompanying drawings.
[0023] As Figure 1 , Figure 2 and Figure 3 shown, an optimized inward-inclined hatch coaming structure includes a longitudinal hatch coaming 10 and a transverse hatch coaming 20 provided at the top of the cargo hold 30. Both the longitudinal hatch coaming 10 and the transverse hatch coaming 20 are provided above the deck 31, and hatch coaming panels 32 are provided at the tops of both the longitudinal hatch coaming 10 and the transverse hatch coaming 20.
[0024] Both the longitudinal hatch coaming 10 and the transverse hatch coaming 20 are inclined towards the cargo hold. The top of the longitudinal hatch coaming is closer to the ship's centerline than the bottom of the longitudinal hatch coaming, and the top of the transverse hatch coaming is closer to the center vertical line of the cargo hold than the bottom of the transverse hatch coaming.
[0025] The area of the region enclosed by the tops of the longitudinal hatch coaming 10 and the transverse hatch coaming 20 is smaller than the area of the region enclosed by the bottoms of the longitudinal hatch coaming 10 and the transverse hatch coaming 20.
[0026] A corner plate 33 is provided at the connection of the longitudinal hatch coaming 10 and the transverse hatch coaming 20.
[0027] The vertical projection lines of the tops of the longitudinal hatch coaming 10 and the transverse hatch coaming 20 form a hatch projection line; the vertical projection line of the edge of the corner plate is located outside the hatch projection line.
[0028] The edge of the corner plate 33 is an arc or an elliptical arc.
[0029] The included angle between the longitudinal hatch coaming 10 and the longitudinal vertical plane 11 is the longitudinal coaming inclination angle; the included angle between the transverse hatch coaming 20 and the transverse vertical plane 21 is the transverse coaming inclination angle; both the longitudinal coaming inclination angle and the transverse coaming inclination angle are acute angles.
[0030] The longitudinal coaming inclination angle a is 3° to 20°; the transverse coaming inclination angle b is 3° to 20°.
[0031] The relationship between the longitudinal coaming inclination angle and the height of the longitudinal hatch coaming is that the value of the longitudinal coaming inclination angle decreases as the height of the longitudinal hatch coaming increases.
[0032] The relationship between the transverse coaming inclination angle and the height of the transverse hatch coaming is that the value of the transverse coaming inclination angle decreases as the height of the transverse hatch coaming increases.
[0033] The greater the height of the longitudinal hatch coaming, the smaller the longitudinal coaming inclination angle; the greater the height of the transverse hatch coaming, the smaller the transverse coaming inclination angle.
[0034] In this embodiment, the longitudinal coaming inclination angle and the transverse coaming inclination angle are equal.
[0035] When the longitudinal coaming inclination angle and the transverse coaming inclination angle are equal, they are collectively referred to as the coaming inclination angle.
[0036] The main deck of the ship may have camber or sheer. The height of the longitudinal hatch coaming varies at different frame positions in the length direction of the ship, and the height of the transverse hatch coaming varies at different positions from the ship's centerline.
[0037] For the longitudinal hatch coaming with different heights at different frame positions, the height of the longitudinal hatch coaming at the position with the minimum height is used as the height base number of the longitudinal hatch coaming.
[0038] For the transverse hatch coaming with different heights at different distances from the ship's centerline, the height of the transverse hatch coaming at the ship's centerline is used as the height base number of the transverse hatch coaming.
[0039] The smaller value between the height base number of the longitudinal hatch coaming and the height base number of the transverse hatch coaming is taken as the coaming height.
[0040] The value of the coaming inclination angle decreases as the coaming height increases.
[0041] Figure 4 In, the longitudinal hatch coaming and the transverse hatch coaming are simplified and collectively referred to as the coaming. The three inclined solid lines represent the coamings in three cases, namely: the coaming 41 in the first case, the coaming 42 in the second case, and the coaming 43 in the third case. The coaming 41, the coaming 42, and the coaming 43 can be either the longitudinal hatch coaming or the transverse hatch coaming. The greater the coaming height, the smaller the value of the coaming inclination angle.
[0042] Figure 4 Shows the coaming inclination angles in three cases:
[0043] The height H1 of the coaming 41 is 1.0 m, and the corresponding coaming inclination angle c1 is 17°.
[0044] The height H2 of the coaming 42 is 2.0 m, and the corresponding coaming inclination angle c2 is 10°.
[0045] The height H3 of the coaming 43 is 3.0 m, and the corresponding coaming inclination angle c3 is 6°.
[0046] For Figure 4 For the coamings with other heights not shown in, the corresponding coaming inclination angles can be calculated by interpolation according to the coaming heights and the corresponding coaming inclination angles in the above three cases.
[0047] In the present utility model, the longitudinal hatch coaming is arranged in a form that inclines towards the cargo hold hatch, and the transverse hatch coaming is also arranged in a form that inclines towards the cargo hold hatch. The hatch forms an inwardly retracted structure. The edge of the corner plate at the connection of the longitudinal hatch coaming and the transverse hatch coaming is located outside the vertical projection line of the hatch, and the corner plate does not pose an obstacle to the cargo loading operation at the hatch, and it is not easy for goods to accumulate at the corner.
[0048] In the optimized hatch coaming structure of the present utility model, both the longitudinal hatch coaming and the transverse hatch coaming adopt an inwardly inclined structure. The hatch corner area is hidden outside the hatch, which does not pose an obstacle to the cargo loading operation at the hatch, and it is not easy to form a phenomenon of accumulated goods, and it can avoid the accumulation of goods; there is no need to adopt additional measures such as filling cement at the corner, which avoids the work of the crew cleaning the hatch corner when the ship loads and unloads bulk goods, reduces the manual workload of the cargo loading and unloading operation, simplifies the terminal operation process, and is beneficial to the loading and unloading operation.
[0049] The optimized hatch coaming structure of the present utility model reduces the size of the hatch, which makes the area of the hatch cover smaller accordingly. By reducing the area of the hatch cover, a hatch cover product with a slightly smaller area can be selected during the ordering process, which streamlines the cost of the hatch cover.
[0050] The present utility model eliminates the structures such as unloading plates, wear-resistant round steel and their supports at the hatch corner, simplifies the construction process, and saves the construction cost.
[0051] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present utility model is defined by the appended claims. Without departing from the principle and essence of the present utility model, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.
Claims
1. An optimized inwardly inclined hatch coaming structure, which includes longitudinal hatch coaming plates and transverse hatch coaming plates provided on the top of the cargo hold; characterized in that, Both the longitudinal hatch coaming and the transverse hatch coaming incline towards the cargo hold. The top of the longitudinal hatch coaming is closer to the ship's centerline than the bottom of the longitudinal hatch, and the top of the transverse hatch coaming is closer to the perpendicular bisector of the cargo hold than the bottom of the transverse hatch coaming.
2. The optimized inwardly inclined hatch coaming structure according to claim 1, characterized in that, The area of the region enclosed by the top of the longitudinal hatch coaming and the top of the transverse hatch coaming is smaller than the area of the region enclosed by the bottom of the longitudinal hatch coaming and the bottom of the transverse hatch coaming.
3. The optimized inwardly inclined hatch coaming structure according to claim 1, characterized in that, A corner plate is provided at the connection of the longitudinal hatch coaming and the transverse hatch coaming; the vertical projection lines of the top of the longitudinal hatch coaming and the top of the transverse hatch coaming form the hatch projection line; the vertical projection line of the edge of the corner plate is located outside the hatch projection line.
4. The optimized inwardly inclined hatch coaming structure according to claim 3, wherein, The edge of the corner plate is an arc or an elliptical arc.
5. The optimized inwardly inclined hatch coaming structure according to claim 1, wherein The angle between the longitudinal hatch coaming and the longitudinal vertical plane is the longitudinal coaming inclination angle; the angle between the transverse hatch coaming and the transverse vertical plane is the transverse coaming inclination angle; both the longitudinal coaming inclination angle and the transverse coaming inclination angle are acute angles.
6. The optimized inwardly inclined hatch coaming structure according to claim 5, wherein The longitudinal coaming inclination angle is 3° to 20°.
7. The optimized inwardly inclined hatch coaming structure according to claim 5, wherein, The transverse coaming inclination angle is 3° to 20°.
8. The optimized inwardly inclined hatch coaming structure according to claim 5, characterized in that, The longitudinal coaming inclination angle is equal to the transverse coaming inclination angle.
9. The optimized inwardly inclined hatch coaming structure according to claim 5, wherein The relationship between the longitudinal coaming inclination angle and the height of the longitudinal hatch coaming is that the value of the longitudinal coaming inclination angle decreases as the height of the longitudinal hatch coaming increases.
10. The optimized inwardly inclined hatch coaming structure according to claim 5, characterized in that, The relationship between the transverse coaming inclination angle and the height of the transverse hatch coaming is that the value of the transverse coaming inclination angle decreases as the height of the transverse hatch coaming increases.