Hoisting device for cargo ship and using method of hoisting device
By designing a cargo ship lifting device that can adjust the tension of the lift chain and counterweight block, the problem of inability to extend the crane caused by narrow cargo warehouses is solved, and the fast, safe and efficient loading and unloading of goods is achieved, and transportation efficiency and safety are improved.
Patent Information
- Application Number
- CN202410025020.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2025-07-08
AI Technical Summary
In the prior art, the narrow cargo warehouse of the cargo ship makes the crane unable to extend, which requires manual handling, which is inefficient, and is prone to damage inclination during lifting, which poses safety hazards.
A lifting device for cargo ships is designed, including a base frame, a support frame, a lifting chain, a lifting beam and a counterweight block. By adjusting the tension of the lifting chain and the gravity of the counterweight block, the device is kept balanced. The lifting beam can be rotated to extend into the cargo warehouse, and a door machine can be combined with a stable and efficient cargo loading and unloading.
It realizes fast, safe and efficient loading and unloading of goods, avoids the laborious labor of manual handling and the risk of boom tilting, and improves transportation efficiency and safety.
Smart Images
Figure CN120270918A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cargo hoisting, and more particularly to a hoisting device for a cargo ship and its use method. Background Art
[0002] With the development of marine technology, the shipbuilding industry has become more and more developed and undertakes the transportation between continents. Taking large bulk carriers as an example, they have a large cargo capacity and are mainly used to transport goods. When a cargo ship arrives at the dock, a special dock crane is required to hoist the goods in the cargo hold or load the goods onto the cargo ship. Some cargo holds in the cargo ship are relatively hidden and narrow, and the boom on the crane cannot reach into the cargo hold for loading and unloading of goods. At this time, manual handling and loading of goods are usually required, which is time-consuming, laborious, and inefficient, and rapid and effective cargo loading cannot be achieved. In addition, during the process of the crane hoisting goods, it is very easy for the boom to be unbalanced in force and the boom to tilt, which will cause the goods to tilt and be damaged, and even cause safety accidents. Summary of the Invention
[0003] The purpose of the present invention is to provide a hoisting device for a cargo ship and its use method, which can achieve the loading and unloading of cargo on the cargo ship conveniently, quickly, smoothly, safely and efficiently.
[0004] To this end, the present invention provides a hoisting device for a cargo ship, including a chassis, a support frame vertically fixed at the center of the chassis, a hoisting chain provided at one end of the chassis, and the top of the support frame and the hoisting chain are both connected to a gantry hook; a connecting member for connecting the bottom of the hoisting chain to the chassis and for adjusting the magnitude of the pulling force exerted by the hoisting chain on the chassis; a counterweight detachably connected to one end of the chassis; a suspension beam rotatably connected to the other end of the chassis; and a limiting member provided on the chassis for limiting the suspension beam when the suspension beam rotates to be parallel to the length direction of the chassis.
[0005] Preferably, a main lifting ring is provided at the top of the support frame, the hoisting chain extends obliquely from one end of the chassis towards the main lifting ring, a secondary lifting ring is provided at the top of the hoisting chain, and the main lifting ring and the secondary lifting ring are both connected to the gantry hook.
[0006] Preferably, the connecting member includes a connecting ring, one end of the connecting ring is connected with a first hook and the other end is connected with a second hook; the first hook is connected to the bottom of the hoisting chain, and the second hook is connected to one end of the chassis.
[0007] Preferably, the first hook includes a first screw rod threadedly connected to one end of the connecting ring.
[0008] Preferably, the second hook includes a second screw rod, and the second screw rod is threadedly connected to the other end of the connecting ring.
[0009] Preferably, a rotating hook is provided at the other end of the chassis, the rotating hook is connected to the hanging beam, and the rotating hook is used to realize the rotation of the hanging beam.
[0010] Preferably, a connecting shaft connected to the rotating hook is provided at the center of the hanging chain.
[0011] Preferably, a plurality of hanging holes are equidistantly provided at the bottom of the hanging beam, and a plurality of hanging ears are equidistantly provided on the two corresponding sides of the hanging beam.
[0012] Preferably, the limiting member includes a first limiting plate provided at one end of the hanging beam and a second limiting plate provided at the bottom of the chassis; when the hanging beam is parallel to the length of the chassis, the first limiting plate is in contact with the second limiting plate and is connected by a limiting pin.
[0013] The present invention also provides a method for using the hoisting device for a cargo ship, including: connecting the main lifting ring and the auxiliary lifting ring to the portal crane hook head, adjusting the hanging chain to be in a tensioned state to prevent the hoisting device from tilting towards the counterweight block, so that the hoisting device is in a balanced state as much as possible; moving the unloaded hoisting device above the cargo stack through the portal crane, and hanging the goods on the hanging beam; driving the hoisting device loaded with goods above the cargo ship through the portal crane, rotating the hanging beam so that the hanging beam and the goods extend into the cargo hold of the cargo ship, and unloading the goods and stacking them in the cargo hold; after unloading the goods, driving the hoisting device through the portal crane to move the hanging beam out of the cargo hold; adjusting the hanging chain to be in a tensioned state to prevent the hoisting device from tilting towards the counterweight block, so that the hoisting device is in a balanced state as much as possible, and driving the hoisting device loaded with goods through the portal crane to move away from the cargo ship.
[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The present invention provides a hoisting device for a cargo ship and its usage method. The hoisting device for a cargo ship includes a chassis, a support frame is vertically fixed at the center of the chassis, a lifting chain is provided at one end of the chassis, and the tops of the support frame and the lifting chain are both connected to a gantry hook head; a connecting piece, which is used to connect the bottom of the lifting chain to the chassis and is used to adjust the magnitude of the pulling force exerted by the lifting chain on the chassis; a counterweight block, which is detachably connected to one end of the chassis; a hanging beam, which is rotatably connected to the other end of the chassis; a limiting piece is provided on the chassis, and when the hanging beam rotates to be parallel to the length direction of the chassis, the limiting piece is used to limit the hanging beam. The hoisting device for a cargo ship of the present invention has a stable and reliable structure, and can realize the loading and unloading of cargo on the cargo ship conveniently, quickly, safely and efficiently. The hanging beam is used to hang the cargo and can rotate. By rotating the hanging beam, it is convenient to extend the hanging beam into the cargo hold of the cargo ship, so as to facilitate the convenient and quick loading and unloading of the cargo. The lifting chain provides an upward pulling force to the chassis, and the counterweight block provides a downward gravity to the chassis. Under the action of the pulling force of the lifting chain, the gravity of the counterweight block and / or the gravity of the cargo, the hoisting device can maintain a balanced state, so as to realize the stable and effective movement of the hoisting device, and thus facilitate the stable, safe and efficient hoisting of the cargo.
[0015] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of an embodiment of the hoisting device for a cargo ship of the present invention; Figure 2 is a partial structural diagram of an embodiment of the hoisting device for a cargo ship of the present invention; Figure 3 is a schematic structural diagram of an embodiment of the connecting piece of the hoisting device for a cargo ship of the present invention; Figure 4 is a schematic structural diagram of an embodiment of the chassis of the hoisting device for a cargo ship of the present invention; Figure 5 is a schematic structural diagram of an embodiment of the hanging beam of the hoisting device for a cargo ship of the present invention; Figure 6 is a partial structural diagram of an embodiment of the hoisting device for a cargo ship of the present invention. EMBODIMENTS
[0017] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will further describe the present invention in detail in conjunction with the accompanying drawings and embodiments.
[0018] Such as Figures 1 - 6As shown in the figure, the hoisting device for cargo ships of the present invention includes a chassis 10. A support frame 20 is vertically fixed at the center of the chassis 10. A main lifting ring 21 is provided at the top of the support frame 20; a lifting chain 30, the bottom of the lifting chain 30 is connected to one end of the chassis 10, the lifting chain 30 extends towards the main lifting ring 21, and a secondary lifting ring 31 is provided at the top of the lifting chain 30; a lifting beam 40, the lifting beam 40 is rotatably connected to the other end of the chassis 10; a limiting member is provided on the chassis 10, and when the lifting beam 40 rotates to be parallel to the length direction of the chassis 10, the limiting member is used to limit the lifting beam 40; a counterweight 50 is provided at one end of the chassis 10.
[0019] The hoisting device for cargo ships of the present invention has a stable and reliable structure, and can realize the loading and unloading of cargo on cargo ships conveniently, quickly, safely and efficiently. The lifting beam 40 is used for hanging goods and can rotate. By rotating the lifting beam 40, it is convenient to extend the lifting beam 40 into the cargo hold of the cargo ship, so as to facilitate the convenient and quick loading and unloading of goods. The lifting chain 30 provides an upward pulling force to the chassis 10, and the counterweight 50 provides a downward gravity to the chassis 10. Under the action of the pulling force of the lifting chain 30, the gravity of the counterweight 50 and / or the gravity of the goods, the hoisting device can maintain a balanced state, so as to realize the stable and effective movement of the hoisting device, and thus facilitate the stable, safe and efficient hoisting of goods.
[0020] The chassis 10 is an integral part and is integrally formed by a processing technology, which can make the chassis 10 have a stable and reliable structure and a long service life. The chassis 10 is a rectangular parallelepiped-shaped frame. The chassis 10 includes two long rods 11 and two short rods 12 that enclose a rectangle. A plurality of reinforcing rods are provided between the two long rods 11, which can make the structure of 10 stable and reliable and have a long service life.
[0021] A plurality of equally spaced lifting rings are provided on the outer sides of the two long rods 11, which can be used for hanging goods. When the lifting beam 40 and the counterweight 50 are removed, the chassis 10 can also realize the function of hanging and hoisting goods.
[0022] The support frame 20 is an integral part and is integrally formed by a processing technology, which can make the support frame 20 have a stable and reliable structure and a long service life. The support frame 20 is a rectangular parallelepiped-shaped frame. The support frame 20 is vertically fixed above the chassis 10. Specifically, the bottom of the support frame 20 is fixed at the center position of the chassis 10, and the fixing method is a common method in the technical field and will not be specifically limited here.
[0023] The support frame 20 is fixed on the chassis 10, which can fix the position of the main lifting ring 31, that is, can fix the lifting point of the entire hoisting device for cargo ships, so as to facilitate the hoisting device for cargo ships to maintain balance.
[0024] A climbing ladder 22 is provided between the support frame 20 and the chassis 10. The climbing ladder 22 forms an acute angle with the horizontal direction. By means of the climbing ladder 22, the operator can easily climb to the top of the support frame 20, so that the main lifting ring 21 can be easily connected to the lifting equipment. The bottom of the climbing ladder 22 is fixed to the chassis 10. The bottom of the climbing ladder 22 can be close to one end or the other end of the chassis 10, and no specific limitation is made here.
[0025] A connecting piece is provided at the bottom of the lifting chain 30. The connecting piece is used to connect the lifting chain 30 to the chassis 10 and is used to adjust the length of the lifting chain 30.
[0026] The connecting piece includes a connecting ring 61. One end of the connecting ring 61 is connected with a first hook 62 and the other end is connected with a second hook 63. The first hook 62 is connected to the bottom of the lifting chain 30, and the second hook 63 is connected to one end of the chassis 10.
[0027] The connecting ring 61 is a cuboid-shaped hollow ring. Threaded holes (not shown in the figure) are provided at the two opposite ends of the connecting ring 61.
[0028] The first hook 62 includes a first screw 64. The first hook 62 and the first screw 64 are an integral part and can be integrally formed by a processing technology. The first screw 64 is threadedly connected to the threaded hole at one end of the connecting ring 61. By rotating the first hook 62 and the first screw 64, the length of the first screw 64 extending into the connecting ring 61 can be adjusted, so that the lifting chain 30 can be adjusted to be in a tensioned state or a relaxed state.
[0029] The second hook 63 includes a second screw 65. The second hook 63 and the second screw 65 are an integral part and can be integrally formed by a processing technology. The second screw 65 is threadedly connected to the threaded hole at the other end of the connecting ring 61. By rotating the second hook 63 and the second screw 65, the length of the second screw 65 extending into the connecting ring 61 can be adjusted, so that the lifting chain 30 can be adjusted to maintain a tensioned state or a non-tensioned state.
[0030] By rotating the first hook 62 and / or the second hook 63, the suspension chain 30 can be adjusted (tightening or lengthening the suspension chain 30) so that the suspension chain 30 can be in a tensioned state or a relaxed state. When the lengths of the first screw 64 and the second screw 65 screwed into the connecting ring 61 are longer, the suspension chain 30 is pulled tighter, and the upward pulling force exerted by the suspension chain 30 on one end of the chassis 10 is greater. When the lengths of the first screw 64 and the second screw 65 screwed into the connecting ring 61 are shorter, the degree to which the suspension chain 30 is tightened is smaller, and the upward pulling force exerted by the suspension chain 30 on one end of the chassis 10 is smaller. When the suspension beam 30 is completely relaxed and not tightened, the upward pulling force exerted by the suspension chain 30 on one end of the chassis 10 is 0. The suspension chain 30 can be adjusted according to the actual force condition of the chassis 10 so that the chassis 10 is in a balanced state.
[0031] As Figure 1 shown, in this embodiment, the number of suspension chains 30 is two, and the two suspension chains 30 are respectively connected to both ends of a short rod 11 at one end (right end) of the chassis 10, and the number of corresponding connecting members is also two. Connecting rings 13 are respectively provided at both ends of the short rod 11, and the connecting rings 13 are connected to the second hooks 63, so that the connecting members can be connected to the chassis 10.
[0032] As Figure 1 shown, a counterweight 50 is provided at one end (right end) of the chassis 10. The counterweight 50 is detachably connected to one end of the bottom of the chassis 10, and the detachable connection method is a common method in the technical field and will not be specifically limited herein.
[0033] The weight of the counterweight 50 is not less than the maximum weight when the suspension beam 40 is fully loaded with goods, or the total weight of the goods hung on the suspension beam 40 shall not be greater than the weight of the counterweight 50. The counterweight 50 can be adjusted according to the actual total weight of the goods hung on the suspension beam 40, and no specific limitation is made herein.
[0034] The counterweight 50 is detachably connected to one end of the bottom of the chassis 10, so that the disassembly and replacement of the counterweight 50 can be facilitated, so that the counterweight 50 can be adjusted according to the actual total weight of the goods hung on the suspension beam 40.
[0035] When hoisting goods, by setting the counterweight 50 and adjusting the suspension chain 30 (the suspension chain 30 is in a tensioned or relaxed state), the hoisting device for a cargo ship can be kept in balance, the hoisting device for a cargo ship can be prevented from tilting, and stable and effective cargo hoisting can be achieved.
[0036] Specifically: In the no-load state, that is, when there is no cargo suspended on the hanging beam 40, the two suspension chains 30 can be adjusted through the connecting member so that both suspension chains 30 are in a tensioned state; that is, the two suspension chains 30 can lift one end of the chassis 10 and provide an upward pulling force to one end of the chassis 10; the counterweight 50 is arranged at one end of the chassis 10, and the counterweight 50 provides a downward acting force to one end of the chassis 10; the upward pulling force of the suspension chain 30 can balance the downward gravity of the counterweight 50, so that the chassis 10 can be in a balanced state. When the hanging beam 40 hangs the cargo, the cargo provides a downward acting force to the other end of the chassis 10; at this time, the two suspension chains 30 can be adjusted through the connecting member so that the two suspension chains 30 are in a slack state, that is, the hanging beam 30 no longer provides an upward pulling force to one end of the chassis 10; in this way, one end of the chassis 10 is subjected to the downward gravity of the counterweight 50, and the other end of the chassis 10 is subjected to the downward gravity of the cargo. Under the action of the two downward gravities, the chassis 10 can be maintained in a balanced state.
[0037] If the weight of the counterweight 50 is much greater than the total weight of the cargo, the two suspension chains 30 can be adjusted through the connecting member so that the two suspension chains 30 are in a tensioned state and provide an upward pulling force to one end of the chassis 10; in this way, under the action of the cargo gravity, the counterweight 50 gravity and the suspension chain 30 pulling force, the chassis 10 can be in a balanced state.
[0038] The tighter the suspension chain 30 is pulled, the greater the upward pulling force the suspension chain 30 provides to one end of the chassis 10. The suspension chain 30 can be adjusted according to the actual force condition of the chassis 10 to make the chassis 10 in a balanced state. A rotating hook 14 is provided at the other end (left end) of the chassis 10. The rotating hook 14 is connected to the hanging beam 40, and the rotating hook 14 is used to realize the rotation of the hanging beam 40.
[0039] As Figure 4 shown, a connecting frame 15 is fixed in the middle of the bottom of the short rod 12 located at the left end of the chassis 10, and the rotating hook 14 is installed on the connecting frame 15. The rotating hook 14 can be a rotating hook common in the technical field and is not specifically limited here. Through the rotating hook 14, 360° rotation of the hanging beam 40 and the cargo can be realized, so that the loading and unloading of the cargo can be facilitated. The hanging beam 40 is a one-piece part and is integrally formed through a processing technology, which can make the structure of the hanging beam 40 stable and reliable and have a long service life.
[0040] The hanging beam 40 is a one-piece part and is integrally formed through a processing technology, which can make the structure of the hanging beam 40 stable and reliable and have a long service life.
[0041] As Figure 5 shown, the hanging beam 40 includes a bottom plate 41, and a top plate 42 is vertically provided on the top of the bottom plate 41.
[0042] A plurality of hanging holes 43 are evenly spaced at the bottom of the bottom plate 41 , and the hanging holes 43 can be used to hang goods.
[0043] A plurality of lifting ears 44 are provided at equal intervals on two corresponding side surfaces of the bottom plate 41 , and the lifting ears 44 can be used to hang goods.
[0044] Two parallel and spaced connecting plates 45 are provided at the top center of the top plate 42, and a connecting shaft 46 is vertically provided between the two connecting plates 45, and the connecting shaft 46 is connected to the rotating hook 14. That is, the rotating hook 14 is connected to the center point of the hanging beam 40, which can facilitate the smooth and effective rotation of the hanging chain.
[0045] The limiting member includes a first limiting plate 47 arranged at one end of the hanging beam 40, and a second limiting plate 16 arranged at the bottom of the base frame 10; when the length of the hanging beam 40 is parallel to that of the base frame 10 (the bottom plate 41 is parallel to the long rod 11), the first limiting plate 47 is in contact with the second limiting plate 16 and is connected by a limiting pin.
[0046] When the length of the hanging beam 40 is parallel to that of the base frame 10, the first limit plate 47 fits with the second limit plate 16, and the second limit plate 16 can prevent the hanging beam 40 from continuing to rotate. The first limit plate 47 and the second limit plate 16 are connected and fixed together by the limit pin, which can play a stable and effective role in limiting and fixing the hanging beam 40, preventing the hanging beam 40 from rotating, so that the hanging beam 40 maintains an effective state of being parallel to the base frame 10, which is convenient for lifting and loading and unloading of goods. Connect the main lifting ring 21 and the auxiliary lifting ring 31 to the gantry crane hook, rotate the first hook 62 and / or the second hook 63 to adjust the lifting chain 30, so that the lifting chain 30 is in a tensioned state, avoid the lifting device from tilting toward the counterweight block 50, and keep the lifting device in a balanced state as much as possible.
[0047] The unloaded hoisting device is moved to the top of the cargo pile by the gantry crane, and the cargo is hung on the lifting hole 43 and / or the lifting lug 44 of the hanging beam 40. The hanging beam 40 is rotated so that the first limit plate 47 fits with the second limit plate 16, and the limit pin is connected to fix the first limit plate 47 and the second limit plate 16 to fix the hanging beam 40, so as to prevent the hanging beam 40 and the cargo from rotating arbitrarily during the movement, so as to realize the stable and effective lifting of the cargo.
[0048] If the base frame 10 is unbalanced and tilted, the first hook 62 and / or the second hook 63 are rotated to loosen the hanging chain 30, so that the base frame 10 is kept in a balanced state as much as possible under the gravity of the cargo weight and the counterweight 50.
[0049] Drive the hoisting device loaded with goods to move above the cargo ship through the portal crane, and remove the limit pin to release the limit on the lifting beam 40. Then rotate the lifting beam 40 so that the lifting beam 40 and the goods can extend into the cargo hold of the cargo ship, and unload the goods and stack them in the cargo hold.
[0050] After unloading the goods, drive the hoisting device to move through the portal crane so that the lifting beam 40 moves out of the cargo hold, and then rotate the lifting beam 40 so that the first limit plate 47 fits with the second limit plate 16, and connect and fix the limit pin to the first limit plate 47 and the second limit plate 16 to fix the lifting beam 40 and prevent the lifting beam 40 from rotating arbitrarily during the movement.
[0051] Rotate the first hook 62 and / or the second hook 63 to adjust the lifting chain 30 so that the lifting chain 30 is in a tensioned state, prevent the hoisting device from tilting towards the counterweight 50, and make the hoisting device as balanced as possible; drive the hoisting device loaded with goods to move away from the cargo ship through the portal crane.
[0052] Unload the goods in the cargo ship: Connect both the main lifting ring 21 and the auxiliary lifting ring 31 to the hook head of the portal crane, and rotate the first hook 62 and / or the second hook 63 to adjust the lifting chain 30 so that the lifting chain 30 is in a tensioned state, prevent the hoisting device from tilting towards the counterweight 50, and make the hoisting device as balanced as possible.
[0053] Move the unloaded hoisting device above the cargo ship through the portal crane, and then rotate the lifting beam 40 so that the lifting beam 40 can extend into the cargo hold of the cargo ship, and hang the goods in the cargo hold on the lifting beam 40. Drive the hoisting device to move through the portal crane so that the lifting beam 40 moves out of the cargo hold, and then rotate the lifting beam 40 so that the first limit plate 47 fits with the second limit plate 16, and connect and fix the limit pin to the first limit plate 47 and the second limit plate 16 to fix the lifting beam 40 and prevent the lifting beam 40 and the goods from rotating arbitrarily during the movement to achieve stable and effective lifting of the goods.
[0054] If the underframe 10 is out of balance and tilted, rotate the first hook 62 and / or the second hook 63 to loosen the lifting chain 30, and under the action of the weight of the goods and the gravity of the counterweight 50, make the underframe 10 as balanced as possible.
[0055] Drive the hoisting device loaded with goods to move through the portal crane to transfer the goods.
[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present invention.
Claims
1. A hoisting device for a cargo ship, characterized in that, including a chassis, a support frame is vertically fixed at the center of the chassis, a lifting chain is provided at one end of the chassis, and the tops of the support frame and the lifting chain are both connected to the gantry hook head; a connecting member, which is used to connect the bottom of the lifting chain to the chassis and is used to adjust the magnitude of the pulling force exerted by the lifting chain on the chassis; a counterweight block, which is detachably connected to one end of the chassis; a hanging beam, which is rotatably connected to the other end of the chassis; a limiting member is provided on the chassis. When the hanging beam rotates to be parallel to the length direction of the chassis, the limiting member is used to limit the hanging beam.
2. The lifting device for a cargo ship according to claim 1, characterized in that a main lifting ring is provided at the top of the support frame, and the lifting chain extends obliquely from one end of the chassis towards the main lifting ring, a secondary lifting ring is provided at the top of the lifting chain, and both the main lifting ring and the secondary lifting ring are connected to the gantry hook head.
3. The lifting device for a cargo ship according to claim 1, characterized in that the connecting member includes a connecting ring, a first hook is connected to one end of the connecting ring, and a second hook is connected to the other end; the first hook is connected to the bottom of the lifting chain, and the second hook is connected to one end of the chassis.
4. The lifting device for a cargo ship according to claim 3, characterized in that the first hook includes a first screw rod, and the first screw rod is threadedly connected to one end of the connecting ring.
5. The lifting device for a cargo ship according to claim 3, characterized in that the second hook includes a second screw rod, and the second screw rod is threadedly connected to the other end of the connecting ring.
6. The lifting device for a cargo ship according to claim 1, characterized in that a rotating hook is provided at the other end of the chassis, the rotating hook is connected to the hanging beam, and the rotating hook is used to realize the rotation of the hanging beam.
7. The lifting device for a cargo ship according to claim 6, characterized in that a connecting shaft connected to the rotating hook is provided at the center of the lifting chain.
8. The lifting device for a cargo ship according to claim 1, characterized in that a plurality of hanging holes are provided at equal intervals at the bottom of the hanging beam, and a plurality of hanging ears are provided at equal intervals on the two corresponding sides of the hanging beam respectively.
9. The lifting device for a cargo ship according to claim 1, characterized in that the limiting member includes a first limiting plate provided at one end of the hanging beam and a second limiting plate provided at the bottom of the chassis; when the hanging beam is parallel to the length of the chassis, the first limiting plate is in contact with the second limiting plate and is connected by a limiting pin.
10. The method of using the hoisting device for cargo ships according to any one of claims 1-9, characterized in that, including: Connect the main lifting ring and the secondary lifting ring to the gantry hook head, adjust the lifting chain to be in a tensioned state, avoid the lifting device from tilting towards the counterweight block, and make the lifting device as balanced as possible; Move the unloaded lifting device above the cargo stack through the gantry, and hang the goods on the hanging beam; Drive the lifting device loaded with goods above the cargo ship through the gantry, rotate the hanging beam so that the hanging beam and the goods extend into the cargo hold of the cargo ship, and unload the goods and stack them in the cargo hold; After unloading the goods, the gantry crane drives the hoisting device to move, so that the hanging beam moves out of the cargo hold; Adjust the hanging chain to be in a tensioned state to prevent the hoisting device from tilting towards the counterweight, so that the hoisting device is as balanced as possible, and the gantry crane drives the hoisting device loaded with goods to move away from the cargo ship.