Automatic hatch cover opening and closing device for compact cargo hold of bulk cargo ship

Abstract

The utility model discloses a bulk cargo ship compact type cargo hold automatic hatch cover opening and closing device, and relates to the technical field of cargo hold automatic hatch cover opening and closing devices, the bulk cargo ship compact type cargo hold automatic hatch cover opening and closing device comprises a deck body, a cargo hold is arranged in the deck body, and a placing groove is formed in the top of the deck body. The deck body comprises a cargo hold, a containing groove is formed in the top of the cargo hold, the containing groove is located in the left side of the cargo hold, a hatch cover is movably mounted at the top of the cargo hold, mounting grooves are formed in the two ends of the top of the cargo hold through the deck body, and first driving motors are mounted on one sides of the interiors of the mounting grooves. The problems that in the prior art, a foldable hatch cover which is erected after being folded is generally adopted, however, when an existing hatch cover is erected after being folded, the space on the two sides of the upper portion of a cargo hold is large, when a hoisting mechanism used for loading cargos loads the cargos into the cargo hold, the hatch covers on the two sides of the cargo hold need to be accurately avoided, and inconvenience is brought to cargo loading are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic cargo hold cover opening and closing devices, specifically a compact automatic cargo hold cover opening and closing device for bulk carriers. Background Technology

[0002] Bulk carriers are short for dry bulk carriers, specifically designed to transport unpackaged cargo such as coal, ore, timber, livestock, and grain. Ships that transport bulk dry cargoes like grain, coal, ore, salt, and cement can all be called dry bulk carriers, or simply bulk carriers. Because dry bulk carriers handle a single type of cargo, do not require bundling, baling, or boxing, are not susceptible to compression, and are easy to load and unload, they are all single-deck ships. The cargo holds of a bulk carrier are mostly located on the upper deck for loading bulk cargo, and the hatches are generally equipped with hatch covers for closing.

[0003] Existing hatch covers, due to the limited space on both sides of the hull, generally use folding hatch covers that fold and then stand upright. However, when folded and upright, existing hatch covers occupy a large amount of space on both sides of the cargo hold. When the hoisting mechanism is loading cargo into the cargo hold, it needs to precisely avoid the hatch covers on both sides of the cargo hold, which causes inconvenience to loading cargo. Therefore, we propose a compact automatic hatch cover opening and closing device for bulk carriers to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a compact automatic hatch cover opening and closing device for bulk carriers, in order to solve the problem mentioned in the background art that existing hatch covers, when opened, occupy a large amount of space on both sides of the cargo hold due to the small space on both sides of the hull. When the hoisting mechanism used for loading cargo into the cargo hold, it needs to accurately avoid the hatch covers on both sides of the cargo hold, which causes inconvenience to loading cargo.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a compact automatic opening and closing hatch cover device for bulk carriers, comprising a deck body, a cargo hold inside the deck body, a placement slot on the top of the deck body located on the left side of the cargo hold, a hatch cover movably mounted on the top of the cargo hold, mounting slots on both ends of the top of the cargo hold via the deck body, a first drive motor mounted on one side inside the mounting slot, a first threaded rod mounted on the output shaft of the first drive motor, a first slider threadedly connected to the outer wall of the first threaded rod, sliding assemblies mounted on both ends of the bottom of the hatch cover, the first slider and the sliding assemblies connected via a first hydraulic cylinder, a rotating shaft mounted on both ends of the left side of the hatch cover, a third drive motor mounted on the other end of the rotating shaft, and a lifting assembly mounted on the bottom of the third drive motor.

[0006] Preferably, the sliding assembly includes a slide groove located at both ends of the bottom of the hatch. A second drive motor is installed on one side inside the slide groove. A second threaded rod is installed on the output shaft of the second drive motor, and a second slider is threadedly connected to the outer wall of the second threaded rod.

[0007] Preferably, a first fixing block is installed at both ends of the top of the first slider, a first bearing is installed at the upper part between the two first fixing blocks, the bottom of the first threaded rod is rotatably connected to the first slider through the first bearing, a second fixing block is installed at both ends of the bottom of the second slider, a second bearing is installed at the lower part between the two second fixing blocks, and the top of the first threaded rod is rotatably connected to the second slider through the second bearing.

[0008] Preferably, the lifting assembly includes two fourth drive motors, which are located at both ends of the bottom of the placement slot. A third threaded rod is installed on the output shaft at the top of the fourth drive motor, and a lifting plate is threadedly connected to the outer wall of the third threaded rod.

[0009] Preferably, the third drive motor is fixedly connected to the lifting plate by a clamp, and the clamp is bolted to the lifting plate.

[0010] Preferably, two upright plates are installed on the left side of the top of the deck body, and a wire roller is installed on the upper part between the two upright plates. A fifth drive motor is installed on one end of the wire roller through the upright plate. A steel wire rope is wound and connected to the outer wall of the wire roller. A fixing ring is installed on the right side of the top of the hatch cover, and the other end of the steel wire rope is fixedly connected to the fixing ring.

[0011] Preferably, three sets of second hydraulic cylinders are installed at the bottom of the placement groove, and an auxiliary plate is installed on the top of the second hydraulic cylinders.

[0012] Preferably, a sealing strip is fixedly installed on the outer wall of the hatch.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the first drive motor drives the first threaded rod to rotate, causing the first slider to move towards the mounting groove. At the same time, the first hydraulic cylinder is opened, causing it to extend. Through the rotational connection between the first hydraulic cylinder and the first and second sliders, the hatch cover can be flipped outward. The third drive motor is started, and the third drive motor drives the rotating shaft to rotate, causing the hatch cover to rotate synchronously until the hatch cover is in a vertical position. The fourth drive motor drives the third threaded rod to rotate, causing the lifting plate to descend. This, in turn, drives the third drive motor to descend through the clamp, thereby moving the hatch cover down into the mounting groove. The second drive motor drives the second threaded rod to rotate, causing the second slider to move upward. By adjusting the length of the first hydraulic cylinder, the first hydraulic cylinder is kept horizontal during the downward movement of the hatch cover, which effectively improves the stability of the hatch cover during the downward movement. This solves the problem that existing hatch covers, due to the limited space on both sides of the hull, generally use folding hatch covers that can be erected after folding. However, when existing hatch covers are folded and erected, they occupy a large amount of space on both sides of the cargo hold. When the hoisting mechanism used for loading cargo into the cargo hold, it needs to precisely avoid the hatch covers on both sides of the cargo hold, which causes inconvenience to loading cargo.

[0015] (2) By starting the fifth drive motor, the wire rope can be retracted to the wire roller by driving the wire roller to rotate in the positive direction, thereby realizing the upward flipping of the hatch cover until the hatch cover is in a vertical state. By driving the wire roller to rotate in the opposite direction by the fifth drive motor, the wire rope can be put back, thereby improving the stability of the hatch cover moving downward. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention. Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 2 ;

[0019] Figure 4 This is a front cross-sectional view of the present invention.

[0020] Figure 5 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0021] In the diagram: 1. Deck body; 2. Cargo hold; 3. Placement slot; 4. Hatch cover; 5. Mounting slot; 6. First drive motor; 7. First threaded rod; 8. First slider; 9. First fixing block; 10. First bearing; 11. First hydraulic cylinder; 12. Slide groove; 13. Second drive motor; 14. Second threaded rod; 15. Second slider; 16. Second fixing block; 17. Second bearing; 18. Rotating shaft; 19. Third drive motor; 20. Fourth drive motor; 21. Third threaded rod; 22. Lifting plate; 23. Clamp; 24. Vertical plate; 25. Wire roller; 26. Fifth drive motor; 27. Steel wire rope; 28. Fixing ring; 29. ​​Second hydraulic cylinder; 30. Auxiliary plate; 31. Sealing strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides an embodiment of a compact automatic cargo hold cover opening and closing device for a bulk carrier, comprising a deck body 1, a cargo hold 2 disposed inside the deck body 1, a placement groove 3 disposed on the top of the deck body 1, the placement groove 3 being located on the left side of the cargo hold 2, a cover 4 movably mounted on the top of the cargo hold 2, mounting grooves 5 disposed at both ends of the top of the cargo hold 2 via the deck body 1, a first drive motor 6 mounted on one side inside the mounting groove 5, a first threaded rod 7 mounted on the output shaft of the first drive motor 6, a first slider 8 threadedly connected to the outer wall of the first threaded rod 7, and sliding components mounted at both ends of the bottom of the cover 4, the sliding components including a slide groove 12 located at both ends of the bottom of the cover 4, a second drive motor 8 mounted on one side inside the slide groove 12. The output shaft of the second drive motor 13 is equipped with a second threaded rod 14. A second slider 15 is threaded onto the outer wall of the second threaded rod 14. The first slider 8 is connected to the sliding assembly via a first hydraulic cylinder 11. First fixing blocks 9 are installed at both ends of the top of the first slider 8. A first bearing 10 is installed at the upper part between the two first fixing blocks 9. The bottom of the first threaded rod 7 is rotatably connected to the first slider 8 via the first bearing 10. Second fixing blocks 16 are installed at both ends of the bottom of the second slider 15. A second bearing 17 is installed at the lower part between the two second fixing blocks 16. The top of the first threaded rod 7 is rotatably connected to the second slider 15 via the second bearing 17. A rotating shaft 18 is installed at both ends of the left side of the hatch 4. A second screw is installed at the other end of the rotating shaft 18. When the hatch 4 needs to be opened, the first drive motor 6 is activated by the three drive motors 19. The first drive motor 6 rotates the first threaded rod 7, causing the first slider 8 to move closer to the mounting groove 5. Simultaneously, the first hydraulic cylinder 11 is opened, extending it. The rotational connection between the first hydraulic cylinder 11, the first slider 8, and the second slider 15 causes the hatch 4 to flip outwards. The third drive motor 19 is then activated, causing the rotating shaft 18 to rotate synchronously until the hatch 4 is in a vertical position. A lifting assembly is located at the bottom of the third drive motor 19, comprising two fourth drive motors 20 located at opposite ends of the bottom of the placement groove 3. A third threaded rod 21 is installed on the output shaft at the top of the machine 20. A lifting plate 22 is threadedly connected to the outer wall of the third threaded rod 21. A third drive motor 19 is fixedly connected to the lifting plate 22 via a clamp 23, which is bolted to the lifting plate 22. When the fourth drive motor 20 is started, it drives the third threaded rod 21 to rotate, causing the lifting plate 22 to descend. This, in turn, drives the third drive motor 19 to descend via the clamp 23, thereby moving the hatch cover 4 down into the placement slot 3. When the second drive motor 13 is started, it drives the second threaded rod 14 to rotate, causing the second slider 15 to move upward. By adjusting the length of the first hydraulic cylinder 11, the hatch cover 4 is ensured to remain horizontal throughout the downward movement.This effectively improves the stability of the hatch cover 4 during its descent. Two upright plates 24 are installed on the left side of the top of the deck body 1. A wire roller 25 is installed on the upper part between the two upright plates 24. A fifth drive motor 26 is installed at one end of the wire roller 25 through the upright plate 24. A steel wire rope 27 is wound around the outer wall of the wire roller 25. A fixing ring 28 is installed on the right side of the top of the hatch cover 4. The other end of the steel wire rope 27 is fixedly connected to the fixing ring 28. Activating the fifth drive motor 26 rotates the wire roller 25 in the forward direction, retracting the steel wire rope 27 onto the wire roller 25, thus allowing the hatch cover 4 to flip upwards until it is in a vertical position. Reversing the rotation of the wire roller 25 by the fifth drive motor 26 releases the steel wire rope 27, thereby ensuring the stability of the hatch cover 4 during its descent.

[0024] Please see Figure 5 Three sets of second hydraulic cylinders 29 are installed at the bottom of the placement slot 3. An auxiliary plate 30 is installed on the top of the second hydraulic cylinder 29. When the hatch cover 4 is in a vertical position, the second hydraulic cylinder 29 drives the auxiliary plate 30 to rise until it is in contact with the bottom surface of the hatch cover 4. When the hatch cover 4 is lowered, the second hydraulic cylinder 29 retracts and drives the auxiliary plate 30 to fall. This can provide a buffer for the descent of the hatch cover 4, thereby avoiding damage to the hatch cover 4 and extending the service life of the hatch cover 4.

[0025] Please see Figure 3 A sealing strip 31 is fixedly installed on the outer wall of the hatch cover 4. The sealing strip 31 can ensure the water tightness, air tightness and dustproofness of the hatch cover 4. At the same time, the sealing strip 31 has a certain elasticity, which can play a buffering role when the hatch cover 4 is closed, reduce the mechanical impact between the hatch cover 4 and the hatch opening, and extend the service life of the hatch cover 4.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A compact hatch cover opening and closing device for a bulk carrier, comprising a deck body (1), characterized in that: The inside of the deck body (1) is provided with a cargo hold (2), the top of the deck body (1) is provided with a placing groove (3), the placing groove (3) is located on the left side of the cargo hold (2), the top of the cargo hold (2) is movably provided with a hatch cover (4), both ends of the top of the cargo hold (2) are provided with mounting grooves (5) through the deck body (1), one side of the inside of the mounting groove (5) is provided with a first driving motor (6), a first threaded rod (7) is installed on the output shaft of the first driving motor (6), a first sliding block (8) is threadedly connected to the outer wall of the first threaded rod (7), both ends of the bottom of the hatch cover (4) are provided with a sliding assembly, the first sliding block (8) is connected with the sliding assembly through a first hydraulic cylinder (11), both ends of the left side of the hatch cover (4) are provided with a rotating shaft (18), a third driving motor (19) is installed on the other end of the rotating shaft (18), and the bottom of the third driving motor (19) is provided with a lifting assembly.

2. A compact hatch cover system for a bulk carrier according to claim 1, wherein: The sliding assembly comprises a sliding groove (12), the sliding groove (12) is located on both ends of the bottom of the hatch cover (4), one side of the inside of the sliding groove (12) is provided with a second driving motor (13), a second threaded rod (14) is installed on the output shaft of the second driving motor (13), and a second sliding block (15) is threadedly connected to the outer wall of the second threaded rod (14).

3. A compact hatch cover system for a bulk carrier according to claim 2, wherein: First fixed blocks (9) are installed on both ends of the top of the first sliding block (8), a first bearing (10) is installed on the upper portion between the two first fixed blocks (9), the bottom of the first threaded rod (7) is rotatably connected with the first sliding block (8) through the first bearing (10), second fixed blocks (16) are installed on both ends of the bottom of the second sliding block (15), a second bearing (17) is installed on the lower portion between the two second fixed blocks (16), and the top of the first threaded rod (7) is rotatably connected with the second sliding block (15) through the second bearing (17).

4. A compact hatch cover system for a bulk carrier according to claim 1, wherein: The lifting assembly comprises two fourth driving motors (20), the two fourth driving motors (20) are located on both ends of the bottom of the placing groove (3), a third threaded rod (21) is installed on the output shaft at the top of the fourth driving motor (20), and a lifting plate (22) is threadedly connected to the outer wall of the third threaded rod (21).

5. A compact hatch cover system for a bulk carrier according to claim 4, wherein: The third driving motor (19) is fixedly connected with the lifting plate (22) through a clamp (23), and the clamp (23) and the lifting plate (22) are bolted.

6. A compact hatch cover system for a bulk carrier according to claim 1, wherein: Two vertical plates (24) are installed on the left side of the top of the deck body (1), a wire roller (25) is installed on the upper portion between the two vertical plates (24), one end of the wire roller (25) is provided with a fifth driving motor (26) through the vertical plate (24), a steel wire rope (27) is woundly connected to the outer wall of the wire roller (25), a fixed ring (28) is installed on the right side of the top of the hatch cover (4), and the other end of the steel wire rope (27) is fixedly connected with the fixed ring (28).

7. A compact hatch cover system for a bulk carrier according to claim 1, wherein: The inner bottom of the placing groove (3) is provided with three groups of second hydraulic cylinders (29), and the top of the second hydraulic cylinders (29) is provided with auxiliary plates (30).

8. A compact hatch cover system for a bulk carrier according to claim 1, wherein: The outer side wall of the hatch cover (4) is fixedly provided with a sealing rubber strip (31).

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