Bulk cargo ship with lightweight ship body

Abstract

The bulk cargo ship comprises the ship body, a hatch, lateral moving sliding rails, a hatch cover module, an outer cover plate, a rotating shaft, an inner cover plate and wing cover plates, the hatch cover module is divided into the outer cover plate and the inner cover plate, when the hatch cover module is laterally moved and slides to open the hatch, only the outer cover plate needs to slide away from the hatch, and the wing cover plates are arranged on the hatch cover module. The side moving sliding distance of the hatch cover is shorter, the needed side moving sliding rail length is shorter, at the moment, the inner cover plate is turned over by the wing cover plate, limitation of the inner cover plate is relieved, then the inner cover plate is turned over and stacked on the inner wall of the hatch through the rotating shaft, opening of the hatch is achieved, and compared with a traditional side moving type hatch cover, deck space needed by side moving of the hatch cover module is effectively reduced; and therefore, a larger hatch is formed in the bulk cargo ship, the bulk cargo ship can be conveniently matched with more efficient loading and unloading equipment, and the loading and unloading efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to a bulk carrier, and in particular to a bulk carrier with a lightweight hull applied in the field of ship technology. Background Art

[0002] A bulk carrier is a commercial ship designed specifically for the transport of bulk cargo. Such vessels are typically used to transport bulk cargoes such as grain, coal, ore, fertilizer, cement, etc. The design of bulk carriers allows them to load and unload cargo efficiently, usually achieved through large hatches and loading and unloading equipment on board.

[0003] The specification of Chinese patent CN202010504551.7 discloses "A Typical Cargo Hold Layout for Large Bulk Carriers", which discloses a typical cargo hold layout scheme for large bulk carriers. Suitable for large bulk carriers with a length of more than 250m. The main technical parameters of the cross-section layout of the hull are related to the ship width and the standard longitudinal bottom spacing, with fewer components, more convenient tank cleaning, lighter empty ship weight, and stronger bottom stiffness. The grooved transverse bulkhead has a simpler process, stronger boundary support conditions, lighter bulkhead weight, and stronger component safety. At the same time, the formulas and methods in this layout scheme can serve as one of the basic bases for rapid modeling of the hull of a standard large bulk carrier.

[0004] Traditional large bulk carriers mostly use sliding hatch covers to close cargo hatches. The hatch covers slide horizontally through a track system, usually moving toward the side or stern of the ship, and the opening speed is slow. At the same time, in order to provide space for the hatch covers to slide, a larger deck space is required, which in turn affects the design of the hatch size. However, in order to increase the loading efficiency of bulk cargoes, the hatches need to be designed to be larger. Modern bulk carriers are usually equipped with efficient loading and unloading equipment, such as large grabs or conveyor belts. Large hatches can better cooperate with these equipment, and a larger hatch design can reduce the weight of the deck, thereby achieving lightweight bulk carriers. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the traditional sliding hatch cover requires a larger deck area, which affects the design of the large hatch, and the large deck area is not conducive to the lightweight of the bulk carrier.

[0006] In order to solve the above problems, the present invention provides a bulk carrier with a lightweight hull, comprising a hull, a cargo hold fixed in the middle of the hull, a hatch opening on the top of the cargo hold, side sliding rails fixedly connected at both ends of the hatch opening, and a hatch cover module slidably connected between the two side sliding rails;

[0007] The hatch cover module includes an outer cover plate, both ends of which are slidably connected to two side-moving slide rails respectively, and the ends of the two outer cover plates facing each other are rotatably connected to a rotating shaft, the middle of the rotating shaft is fixedly connected to an inner cover plate, the inner cover plate corresponds horizontally to the outer cover plate, the length of the inner cover plate corresponds to the internal width of the hatch, and the inner cover plate corresponds vertically to the inner wall of the hatch, both ends of the inner cover plate are hinged with wing cover plates, and the total length of the two wing cover plates and the inner cover plate corresponds to the length of the outer cover plate.

[0008] In the above-mentioned bulk carrier with a lightweight hull, by dividing the hatch cover module into an outer cover plate and an inner cover plate, when the hatch cover module is slid sideways to open the hatch, it is only necessary to slide the outer cover plate away from the hatch, and the inner cover plate is flipped over the wing cover plate and flipped over and stacked on the inner wall of the hatch through a rotating axis, thereby effectively reducing the deck space required for the lateral movement of the hatch cover module, thereby enabling the bulk carrier to open a larger hatch and reduce the installation area of ​​the deck, so as to achieve lightweight bulk carriers.

[0009] As a further improvement of the present application, a connecting membrane is fixedly connected between the inner cover plate and the outer cover plate and between the wing cover plate and the inner cover plate. The connecting membrane is made of elastic rubber material. The connecting membrane is utilized to shield the gaps between the inner cover plate and the outer cover plate and between the wing cover plate and the inner cover plate, thereby effectively improving the waterproof capability and not affecting the flipping of the inner cover plate and the wing cover plate.

[0010] As a further improvement of the present application, both ends of the outer cover plate are rotatably connected to travel gears, both ends of the rotating shaft are fixedly connected to transmission gears, and the outer sides of both ends of the side-shifting slide rails are fixedly connected to travel racks, and the transmission gear and the travel rack are both meshed with the travel gear. In the process of the outer cover plate sliding on the side-shifting slide rail, the travel gear is meshed and rotated on the travel rack, thereby realizing the meshing of the travel gear and driving the transmission gear, so that the rotating shaft performs corresponding rotational movement according to the displacement and sliding progress of the outer cover plate, so as to realize the automatic flipping and stacking of the inner cover plate on the inner wall of the hatch.

[0011] As a further improvement of the present application, the rotation angle of the transmission gear is greater than ninety degrees, and the diameter of the transmission gear is greater than the diameter of the traveling rack, so that the transmission gear can rotate more than ninety degrees. When the hatch is closed, the inner cover plate flips to a slightly upward tilted state, effectively improving the drainage capacity of the inner cover plate.

[0012] As another improvement of the present application, a waterproof sealing layer is fixedly embedded inside the end of the inner cover plate away from the outer cover plate, and the waterproof sealing layer is made of wear-resistant rubber material. When the hatch is closed, two adjacent inner cover plates are contacted and combined through the waterproof sealing layer, thereby effectively improving the waterproof ability when the hatch is closed.

[0013] As another improvement supplement of the present application, the top surface of the inner cover plate is inclined, and the end of the inner cover plate away from the outer cover plate is higher, the top of the waterproof sealing layer is aligned with the top surface of the inner cover plate, the lateral cross-section of the wing cover plate is trapezoidal, and the top surface of the wing cover plate is aligned with the top surface of the inner cover plate, which effectively increases the top inclination angle of the inner cover plate, thereby effectively improving the drainage capacity of the inner cover plate, and effectively preventing rainwater from seeping into the cargo hold through the joint between the two inner cover plates.

[0014] As another improvement supplement of the present application, the bottom end of the slope of the inner cover plate is fixedly connected with a drainage groove, and the drainage groove connects the left and right ends of the inner cover plate. The drainage groove blocks the bottom end of the slope of the inner cover plate, so that rainwater flowing along the slope is discharged from the left and right ends of the inner cover plate through the drainage groove, effectively reducing the erosion of rainwater on the joint between the inner cover plate and the outer cover plate, thereby effectively improving the waterproof capability.

[0015] To summarize, the present invention divides the hatch cover module into an outer cover plate and an inner cover plate. When the hatch cover module slides sideways to open the hatch, it is only necessary to slide the outer cover plate away from the hatch while the inner cover plate is still at the top of the hatch. Compared with the traditional side-sliding hatch cover, the lateral sliding distance of the hatch cover is shorter and the required lateral sliding rail length is shorter, thereby effectively realizing the lightweight of the hatch cover side-sliding equipment. At this time, the inner cover plate releases the restriction of the inner cover plate by flipping the wing cover plate, and then flips the inner cover plate and stacks it on the inner wall of the hatch through the rotating shaft to realize the opening of the hatch. Compared with the traditional side-sliding hatch cover, it effectively reduces the deck space required for the lateral movement of the hatch cover module, thereby realizing the opening of a larger hatch on the bulk carrier, making it easier for the bulk carrier to adapt to more efficient loading and unloading equipment, thereby effectively improving the loading and unloading efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;

[0017] Figure 2 This is a three-dimensional structural diagram of the hatch cover module in the closed state according to the first embodiment of the present application;

[0018] Figure 3 This is a three-dimensional structural diagram of the hatch cover module in the open state according to the first embodiment of the present application;

[0019] Figure 4 This is a three-dimensional structural diagram of the inner cover plate in the first embodiment of the present application when the wing cover plate is flipped over;

[0020] Figure 5 This is a demonstration diagram of the hatch closing state of the first embodiment of the present application;

[0021] Figure 6 This is a demonstration diagram of the hatch opening state of the first implementation mode of the present application;

[0022] Figure 7This is a demonstration diagram of the first embodiment of the present application in which the inner cover plate is folded outward to the top of the outer cover plate;

[0023] Figure 8 This is a three-dimensional exploded view of the outer cover plate and the inner cover plate of the second embodiment of the present application;

[0024] Fig. 9 This is a demonstration diagram of the rainproof state of the inner cover plate in the second embodiment of the present application.

[0025] Description of the numbers in the figure:

[0026] 1. Hull; 101. Cargo hold; 102. Hatch; 103. Side sliding rail; 2. Hatch cover module; 201. Outer cover; 202. Rotating shaft; 203. Inner cover; 204. Wing cover; 205. Connecting membrane; 3. Traveling gear; 301. Transmission gear; 302. Traveling gear rail; 4. Waterproof sealing layer; 401. Drain trough. DETAILED DESCRIPTION

[0027] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0028] The first implementation method:

[0029] Figures 1 to 6 FIG. 1 shows a bulk carrier with a lightweight hull, comprising a hull 1, a cargo hold 101 fixed in the middle of the hull 1, a hatch 102 opened on the top of the cargo hold 101, both ends of the hatch 102 are fixedly connected with side sliding rails 103, a hatch cover module 2 is slidably connected between the two side sliding rails 103, the hatch cover module 2 comprises an outer cover plate 201, both ends of the outer cover plate 201 are slidably connected with the two side sliding rails 103, and the ends of the two outer cover plates 201 facing each other are rotatably connected with a rotating shaft 202, an inner cover plate 203 is fixedly connected to the middle of the rotating shaft 202, the inner cover plate 203 corresponds horizontally to the outer cover plate 201, and the length of the inner cover plate 203 is the same as the inner length of the hatch 102. The width of the hatch 102 corresponds to that of the inner cover plate 203, and the inner cover plate 203 corresponds vertically to the inner wall of the hatch 102. Both ends of the inner cover plate 203 are hinged with wing cover plates 204. The sum of the lengths of the two wing cover plates 204 and the inner cover plate 203 corresponds to the length of the outer cover plate 201. A connecting membrane 205 is fixedly connected between the inner cover plate 203 and the outer cover plate 201 and between the wing cover plate 204 and the inner cover plate 203. The connecting membrane 205 is made of elastic rubber material. The connecting membrane 205 is used to cover the gaps between the inner cover plate 203 and the outer cover plate 201 and between the wing cover plate 204 and the inner cover plate 203, thereby effectively improving the waterproof capability and not affecting the turning over of the inner cover plate 203 and the wing cover plate 204.

[0030] When the hatch 102 is opened, the hatch cover module 2 slides on the side sliding rail 103 through the outer cover plate 201. It is only necessary to slide the outer cover plate 201 away from the hatch 102. The traditional side sliding hatch cover needs to slide the complete hatch cover away from the hatch 102, and the inner cover plate 203 is still on the top of the hatch 102. At this time, the inner cover plate 203 is turned over by the wing cover plate 204, and the wing cover plate 204 is turned up to the upper surface of the inner cover plate 203, and the inner cover plate 203 is turned over and stacked on the inner wall of the hatch 102 by the rotating shaft 202, so that the hatch 102 can be opened. The opening of hatch 102 effectively reduces the lateral displacement length of hatch cover module 2 compared with the traditional side-sliding hatch cover, and the required side-sliding slide rail 103 is also shortened accordingly, so as to achieve the lightweight of bulk carrier and realize the opening of larger hatch 102 on bulk carrier. Compared with the traditional side-sliding hatch cover, hatch 102 increases the hatch cover area by one-half, which is convenient for bulk carrier to adapt to more efficient loading and unloading equipment, effectively improves loading and unloading efficiency, and effectively reduces the installation area of ​​the deck, mainly the deck area from hatch 102 to both sides of hull 1.

[0031] Figures 2 to 7 As shown, both ends of the outer cover plate 201 are rotatably connected with the travel gear 3, both ends of the rotating shaft 202 are fixedly connected with the transmission gear 301, and the outer sides of the two ends of the side sliding rail 103 are fixedly connected with the travel rack 302, and the transmission gear 301 and the travel rack 302 are both meshed with the travel gear 3. When the outer cover plate 201 slides on the side sliding rail 103, the travel gear 3 is meshed and rotated on the travel rack 302, so that the travel gear 3 is meshed and drives the transmission gear 301, so that the rotating shaft 202 is moved according to the outer cover The plate 201 performs a corresponding rotational movement during the displacement and sliding process, so that the inner cover plate 203 is automatically turned over and stacked on the inner wall of the hatch 102. The rotation angle of the transmission gear 301 is greater than ninety degrees, and the diameter of the transmission gear 301 is greater than the diameter of the running gear 302, so that the transmission gear 301 rotates more than ninety degrees. When the hatch 102 is closed, the inner cover plate 203 is turned over to a state of slightly tilting upward, which effectively improves the drainage capacity of the inner cover plate 203 and effectively prevents rainwater from penetrating into the cargo hold 101 from the joint of the inner cover plate 203;

[0032] When the outer cover plate 201 slides on the side sliding rail 103, the traveling gear 3 on the outer cover plate 201 meshes and rolls on the traveling rack 302, and the traveling gear 3 is meshed to drive the transmission gear 301 to realize the automatic rotation of the rotating shaft 202. When the side sliding rail 103 is actually used, a protective component is provided, and the protective component can also protect the traveling gear 3 and the transmission gear 301 to adapt to the water environment. The sliding distance of the outer cover plate 201 on the side sliding rail 103 corresponds to the amplitude of the inner cover plate 203 driven by the rotating shaft 202 to flip, that is, when the outer circle of the outer cover plate 201 moves out of the hatch 102, the inner cover plate 203 also flips to the position of the inner wall of the hatch 102. In addition, the transmission gear 301 on the rotating shaft 202 can also directly mesh with the traveling rack 302. The installation method of removing the traveling gear 3 and the method of folding the inner cover plate 203 to the top of the outer cover plate 201 are specifically referred to in the attached drawing. Figure 7 In this state, the inner cover 203 is reversely turned outward and folded to the top of the outer cover 201. Compared with the previous way that the inner cover 203 is turned over and stacked on the inner wall of the hatch 102, the inner cover 203 no longer occupies the internal space of the hatch 102. However, the inner cover 203 and the outer cover 201 are superimposed, which has a shielding effect on the external space of the hatch 102. The inner cover 203 can automatically turn over in two ways, which effectively improves the automatic turning capability of the inner cover 203 and effectively reduces the turning drive equipment of the inner cover 203, thereby further realizing the lightweight optimization of the bulk carrier.

[0033] The second implementation method:

[0034] Compared with the first embodiment, the main new feature is that the top surface of the inner cover plate 203 is arranged in an inclined surface. The specific new structure is as follows, and the rest of the structure is consistent with the first embodiment.

[0035] Figures 5 to 9As shown, a waterproof sealing layer 4 is fixedly embedded inside the end of the inner cover plate 203 away from the outer cover plate 201, and the waterproof sealing layer 4 is made of wear-resistant rubber material. When the hatch 102 is closed, two adjacent inner cover plates 203 are contacted and combined through the waterproof sealing layer 4, which effectively improves the waterproof ability when the hatch 102 is closed. The top surface of the inner cover plate 203 is set in an inclined surface, and the end of the inner cover plate 203 away from the outer cover plate 201 is higher. The top of the waterproof sealing layer 4 is aligned with the top surface of the inner cover plate 203. The lateral cross-section of the wing cover plate 204 is set in a trapezoidal shape, and the top surface of the wing cover plate 204 is aligned with the top surface of the inner cover plate 203. Alignment effectively increases the top inclination angle of the inner cover plate 203, thereby effectively improving the drainage capacity of the inner cover plate 203, effectively preventing rainwater from penetrating into the cargo hold 101 through the joint between the two inner cover plates 203, and the bottom end of the slope of the inner cover plate 203 is fixedly connected with a drainage groove 401, which is connected to the left and right ends of the inner cover plate 203. The bottom end of the slope of the inner cover plate 203 is blocked by the drainage groove 401, so that rainwater flowing along the slope is discharged from the left and right ends of the inner cover plate 203 through the drainage groove 401, effectively reducing rainwater scouring the joint between the inner cover plate 203 and the outer cover plate 201, thereby effectively improving the waterproof capacity;

[0036] After the hatch 102 on the top of the cargo hold 101 is closed, the two adjacent inner cover plates 203 are in contact and combined through the waterproof sealing layer 4, which effectively improves the waterproof ability when the hatch 102 is closed, and the inclined surface of the top surface of the inner cover plate 203 is set, and the waterproof sealing layer 4 is aligned with the inclined surface of the inner cover plate 203, so that the two inner cover plates 203 are matched in a triangular shape, the drainage capacity of the inner cover plates 203 is effectively improved, and rainwater is effectively prevented from penetrating into the cargo hold 101 through the joint between the two inner cover plates 203. The bottom end of the inclined surface of the inner cover plate 203 is blocked by the drainage groove 401, and the rainwater is discharged from the left and right ends of the inner cover plate 203, which effectively reduces the erosion of rainwater on the joint between the inner cover plate 203 and the outer cover plate 201, that is, the sealing life of the connecting membrane 205 is effectively improved, thereby effectively improving the waterproof ability.

[0037] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A bulk carrier with a lightweight hull, characterized in that: The invention comprises a hull (1), a cargo hold (101) being fixed in the middle of the hull (1), a hatch (102) being provided at the top of the cargo hold (101), both ends of the hatch (102) being fixedly connected with side sliding rails (103), and a hatch cover module (2) being slidably connected between the two side sliding rails (103); The hatch cover module (2) comprises an outer cover plate (201), two ends of the outer cover plate (201) are respectively slidably connected to two side sliding rails (103), and the ends of the two outer cover plates (201) facing each other are rotatably connected to a rotating shaft (202), the middle of the rotating shaft (202) is fixedly connected to an inner cover plate (203), the inner cover plate (203) corresponds horizontally to the outer cover plate (201), the length of the inner cover plate (203) corresponds to the inner width of the hatch (102), and the inner cover plate (203) corresponds vertically to the inner wall of the hatch (102), and the two ends of the inner cover plate (203) are hinged with wing cover plates (204), and the total length of the two wing cover plates (204) and the inner cover plate (203) corresponds to the length of the outer cover plate (201).

2. A bulk carrier with a lightweight hull according to claim 1, characterized in that: A connecting membrane (205) is fixedly connected between the inner cover plate (203) and the outer cover plate (201) and between the wing cover plate (204) and the inner cover plate (203), and the connecting membrane (205) is made of an elastic rubber material.

3. A bulk carrier with a lightweight hull according to claim 1, characterized in that: Both ends of the outer cover plate (201) are rotatably connected to a travel gear (3), both ends of the rotating shaft (202) are fixedly connected to a transmission gear (301), and both ends of the side sliding rail (103) are fixedly connected to a travel rack (302) on the outside, and both the transmission gear (301) and the travel rack (302) are meshed with the travel gear (3).

4. A bulk carrier with a lightweight hull according to claim 1, characterized in that: The rotation angle of the transmission gear (301) is greater than ninety degrees, and the diameter of the transmission gear (301) is greater than the diameter of the running gear rail (302).

5. A bulk carrier with a lightweight hull according to claim 1, characterized in that: A waterproof sealing layer (4) is fixedly embedded in the inner portion of one end of the inner cover plate (203) away from the outer cover plate (201), and the waterproof sealing layer (4) is made of a wear-resistant rubber material.

6. A bulk carrier with a lightweight hull according to claim 1, characterized in that: The top surface of the inner cover plate (203) is arranged in an inclined plane, and the end of the inner cover plate (203) away from the outer cover plate (201) is higher, the top end of the waterproof sealing layer (4) is aligned with the top surface of the inner cover plate (203), the lateral cross-section of the wing cover plate (204) is arranged in a trapezoidal shape, and the top surface of the wing cover plate (204) is aligned with the top surface of the inner cover plate (203).

7. A bulk carrier with a lightweight hull according to claim 1, characterized in that: The bottom end of the inclined surface of the inner cover plate (203) is fixedly connected with a drainage groove (401), and the drainage groove (401) is connected to the left and right ends of the inner cover plate (203).

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