Offshore transshipment hoisting equipment
By introducing transfer mechanisms and multi-stage connecting components into offshore lifting equipment, dynamic load balancing is achieved, solving the problem of load imbalance and improving the stability and operational efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU DINSON HEAVY IND
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-12
AI Technical Summary
Existing offshore fixed floating cranes lack effective transfer structures, leading to load imbalance, affecting crane stability, increasing the risk of overturning, and potentially causing damage to the lifted load and low operational efficiency.
A marine transfer and lifting device was designed, comprising a stabilizing platform, a support frame, and a transfer mechanism. It utilizes piston plates and connecting pipes to balance the load on both sides of the crane using the gravity of seawater. Combined with multi-stage rotating connecting components and guide rails, it achieves flexible adjustment and high-precision balance of the load.
It improves the stability and anti-overturning ability of cranes in complex sea conditions, reduces mechanical fatigue and wear, extends equipment service life, and improves the safety and accuracy of lifting operations.
Smart Images
Figure CN224226530U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine lifting equipment technology, specifically a marine transshipment lifting device. Background Technology
[0002] Marine resource development is a crucial sector for global energy and material supply, with increasingly frequent operations such as offshore oil drilling, seabed mining, and offshore wind power installation. In these complex marine engineering projects, offshore lifting equipment serves as a core component, undertaking the critical task of transporting materials and equipment from transport vessels to work platforms or the seabed. Offshore lifting equipment is primarily classified into two categories based on its structure and operational characteristics: fixed and floating. Fixed cranes are typically installed on offshore platforms or docks, suitable for relatively stable working environments; floating cranes, on the other hand, are mounted on ships or floating hulls, allowing for flexible movement and adapting to the operational needs of different sea areas.
[0003] Offshore fixed floating cranes are a special type of equipment that combines the characteristics of fixed and floating cranes. They are usually installed on a buoyant hull or platform and maintain a relatively stable position through an anchoring system or dynamic positioning system. At the same time, they use the crane boom to carry out lifting operations. The working principle of floating cranes is based on the principle of mechanical balance. By adjusting the angle and length of the boom and the attitude of the crane, the lifting, moving and placing of heavy objects can be achieved.
[0004] In offshore lifting operations, load balance is crucial. An unbalanced load not only affects the stability of the crane and increases the risk of overturning, but may also lead to damage to the lifted objects and low operating efficiency. However, current offshore fixed floating cranes generally lack effective transfer structures in their design, that is, there is no special device or mechanism to balance the load weight on both sides of the crane.
[0005] Therefore, in order to address the above problems, the applicant needs to design a marine transshipment and lifting device to solve the problem. Utility Model Content
[0006] The purpose of this invention is to provide a marine transshipment and lifting device to solve the problems mentioned in the background section.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a marine transshipment lifting device, including a stabilizing platform, and a crane is fixedly installed above the stabilizing platform.
[0008] It also includes: a support frame located below the stable platform, and the support frame, the support platform being provided with a transfer mechanism, the transfer mechanism being used to balance the load weight on both sides of the crane, the transfer mechanism including a transfer box fixedly connected to the support platform, a connecting pipe fixedly connected to one side of the transfer box, the input end of the connecting pipe being located below the sea surface, a piston plate being slidably arranged inside the transfer box, and a connecting rod being fixedly arranged on one side of the piston plate, the end of the connecting rod away from the piston plate passing through the transfer box and fixedly connected to a slider, the slider being provided with a connecting component, and the connecting component being connected to the crane boom.
[0009] Furthermore, the connecting component includes a connecting ear that is fixedly connected to the slider, a sliding rod is fixedly disposed on the connecting ear, and a connecting plate is rotatably disposed on the sliding rod.
[0010] Through the above structural design, the fixed connection between the connecting lug and the slide bar, and the rotatable connecting plate on the slide bar, a multi-degree-of-freedom connection between the crane boom and the slider is achieved. This allows the crane boom to swing flexibly and adjust its angle according to load changes during operation. At the same time, the rotational design of the slide bar effectively disperses the force and reduces local stress concentration, thereby improving the durability of the connecting components and reducing the risk of mechanical fatigue caused by rigid connections, further ensuring the stability of the crane in complex sea conditions.
[0011] Furthermore, a connecting shaft is fixedly provided at the end of the connecting plate away from the slide rod, and an extension plate is rotatably provided on the connecting shaft.
[0012] Through the above structural design, the rotatable connection between the connecting shaft and the extension plate expands the adjustable range of the connecting components. The extension plate can extend at multiple angles in the horizontal and vertical directions, making the load transfer path of the crane boom more flexible and adapting to the needs of different lifting heights and distances. At the same time, it can buffer the impact force generated during dynamic operations, reduce the instantaneous load impact on the transfer mechanism and support platform, thereby improving the overall system's vibration resistance and extending the service life of the equipment.
[0013] Furthermore, a fixed shaft is rotatably provided at the end of the extension plate away from the connecting shaft, and a rotating plate is rotatably provided on the fixed shaft. An installation rod is rotatably provided on the rotating plate, and the installation rod is fixedly connected to the boom of the crane.
[0014] Through the above structural design, the rotational combination of the fixed shaft, rotating plate, and mounting rod realizes the three-dimensional spatial motion adaptation between the crane boom and the transfer mechanism. The rotating plate can rotate freely in any direction. Combined with the fixed connection between the mounting rod and the crane boom, the transfer mechanism can respond in real time and adjust the direction of the balancing force when the load shifts. This enhances the crane's adaptability in dynamic environments such as waves and ocean currents, reduces the risk of overturning, and reduces wear on mechanical parts caused by excessive torsional torque.
[0015] Furthermore, a guide rail is slidably provided below the slider, and the guide rail is fixedly connected to the support platform.
[0016] Through the above structural design, the sliding cooperation between the guide rail and the slider provides high-precision guiding constraints for the lateral movement of the slider. By limiting the movement trajectory of the slider, the guide rail ensures that the piston plate slides smoothly along a straight line in the transfer box, avoiding jamming or sealing failure caused by skew. In addition, the rigid support of the guide rail can share the lateral load of the transfer mechanism, improve the structural stability of the support platform, and effectively suppress abnormal vibration of the slider, especially under the conditions of strong winds and waves, ensuring the reliability of balance adjustment.
[0017] Furthermore, a mechanical seal is slidably provided on the outer side of the connecting rod, and the mechanical seal is fixedly connected to the transfer box.
[0018] Through the above structural design, the mechanical seal wraps around the connecting rod and is fixed to the transfer box, achieving efficient sealing during dynamic sliding. The mechanical seal can prevent seawater from seeping into the box through the gap between the connecting rod and the transfer box, avoiding piston plate failure due to corrosion or foreign object obstruction. At the same time, its low friction characteristics reduce the resistance when the connecting rod slides, ensuring that the piston plate can respond sensitively to load changes, maintain the real-time balance performance of the transfer mechanism, and significantly reduce maintenance frequency and cost.
[0019] Compared with the prior art, the beneficial effects of this utility model are: the marine transshipment and lifting equipment is equipped with a transshipment mechanism, which facilitates the use of seawater to balance the load weight on both sides of the crane, thereby improving the overall stability of the equipment. The specific details are as follows:
[0020] 1. When in use, this offshore transfer crane, through the linkage design of the connecting pipeline and the transfer box, can automatically adjust the injection or discharge of seawater according to the load changes of the crane. When the crane arm lifts a heavy object, the piston plate moves with the load to draw seawater into the transfer box, using the gravity of the seawater to balance the weight difference on both sides of the crane in real time. When unloading, the piston plate resets and pushes the seawater back into the sea, realizing dynamic load compensation. This process does not require external power intervention, but only relies on the mechanical structure to respond to load changes, which significantly improves the crane's self-balancing ability under unstable working conditions such as tilting and waves, reduces the risk of overturning and improves operational safety.
[0021] 2. During operation, this marine transfer and lifting equipment utilizes a multi-stage rotation and flexible connection design of its connecting components, allowing the lifting boom to freely adjust its angle and extension range in three-dimensional space. When the load shifts or is impacted by ocean currents, the extension plate and rotating plate absorb the impact energy through multi-directional rotation and guide the slider to move smoothly via guide rails. This converts torque changes into linear displacement of the piston plate, thereby quickly adjusting the seawater counterweight ratio within the transfer box. This design not only alleviates the vulnerability of rigid structures but also achieves high-precision load balancing through mechanical linkage, significantly improving the equipment's operational reliability and service life under complex sea conditions. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0023] Figure 2 This is a three-dimensional structural diagram of the transfer mechanism of this utility model;
[0024] Figure 3 This is a schematic diagram of the internal structure of the transfer box of this utility model;
[0025] Figure 4 This is a three-dimensional structural diagram of the connecting component of this utility model.
[0026] In the diagram: 1. Support platform; 2. Transfer mechanism; 10. Support frame; 11. Stabilizing platform; 12. Crane; 20. Transfer box; 21. Connecting pipe; 22. Piston plate; 23. Connecting rod; 24. Slider; 25. Guide rail; 26. Connecting component; 27. Mechanical seal; 260. Connecting lug; 261. Slide rod; 262. Connecting plate; 263. Connecting shaft; 264. Extension plate; 265. Fixed shaft; 266. Rotating plate; 267. Mounting rod. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] like Figures 1-4As shown, this utility model discloses a marine transfer and lifting device, including a stabilizing platform 11, with a crane 12 fixedly mounted on top of the stabilizing platform 11. It also includes a support frame 10 positioned below the stabilizing platform 11, with a support platform 1 fixedly mounted below the support frame 10. A transfer mechanism 2 is mounted on the support platform 1, used to balance the load weight on both sides of the crane 12. The transfer mechanism 2 includes a transfer box 20 fixedly connected to the support platform 1. A connecting pipe 21 is fixedly connected to one side of the transfer box 20, with the input end of the connecting pipe 21 located below the sea surface. A piston plate 22 is slidably mounted inside the transfer box 20, and a connecting rod 23 is fixedly mounted on one side of the piston plate 22. The end of the connecting rod 23 away from the piston plate 22 passes through the transfer box 20 and is fixedly connected to a slider 24. A connecting component 26 is mounted on the slider 24, and the connecting component 26 is connected to the lifting arm of the crane 12.
[0029] The connecting component 26 includes a connecting lug 260 fixedly connected to the slider 24. A slide rod 261 is fixedly mounted on the connecting lug 260, and a connecting plate 262 is rotatably mounted on the slide rod 261. A connecting shaft 263 is fixedly mounted on the end of the connecting plate 262 away from the slide rod 261, and an extension plate 264 is rotatably mounted on the connecting shaft 263. A fixed shaft 265 is rotatably mounted on the end of the extension plate 264 away from the connecting shaft 263, and a rotating plate 266 is rotatably mounted on the fixed shaft 265. An installation rod 267 is rotatably mounted on the rotating plate 266, and the installation rod 267 is fixedly connected to the boom of the crane 12. Through the coordinated design of the multi-stage rotation and extension structure, the dynamic adaptability of the crane 12 to load balance is significantly improved. This not only enhances the anti-overturning stability of the crane 12 under complex sea conditions such as waves and ocean currents, but also significantly reduces the wear and fatigue damage of mechanical components caused by rigid impact or torsional torque through flexible connection and multi-degree-of-freedom compensation mechanism, thereby extending the service life of the equipment and improving the safety and accuracy of lifting operations.
[0030] A guide rail 25 is slidably arranged below the slider 24, and the guide rail 25 is fixedly connected to the support platform 1. The sliding cooperation between the guide rail 25 and the slider 24 provides high-precision guiding constraints for the lateral movement of the slider 24. A mechanical seal 27 is slidably arranged on the outside of the connecting rod 23, and the mechanical seal 27 is fixedly connected to the transfer box 20. The mechanical seal 27 wraps around the connecting rod 23 and is fixed on the transfer box 20, realizing efficient sealing during the dynamic sliding process.
[0031] Working principle: When using this offshore transfer and lifting equipment, when the boom of crane 12 is suspending a heavy load, the movement of the boom will cause the connecting component 26 to move. The movement of the connecting component 26 will cause the slider 24 to move directionally along the guide rail 25. The movement of the slider 24 will cause the connecting rod 23 to move. The movement of the connecting rod 23 will cause the piston plate 22 to move. The piston plate 22 will draw seawater into the transfer box 20, thereby balancing the load weight on the left and right sides of crane 12. Conversely, when the boom is not suspending a heavy load, the piston plate 22 will push the seawater in the transfer box 20 into the sea surface through the connecting pipe 21, balancing the load weight on the left and right sides of crane 12. This makes it easier to use seawater to balance the load weight on both sides of crane 12, thereby improving the overall stability of the equipment.
[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A marine transshipment lifting device, comprising a stabilizing platform (11), and a crane (12) fixedly mounted above the stabilizing platform (11). Its features are, Also includes: A support frame (10) is set below the stable platform (11), and a support platform (1) is fixedly set below the support frame (10). A transfer mechanism (2) is set on the support platform (1), and the transfer mechanism (2) is used to balance the load weight on both sides of the crane (12). The transfer mechanism (2) includes a transfer box (20) fixedly connected to the support platform (1). A connecting pipe (21) is fixedly connected to one side of the transfer box (20), and the input end of the connecting pipe (21) is located below the sea surface. A piston plate (22) is slidably set inside the transfer box (20), and a connecting rod (23) is fixedly set on one side of the piston plate (22). The end of the connecting rod (23) away from the piston plate (22) passes through the transfer box (20) and is fixedly connected to a slider (24). A connecting component (26) is set on the slider (24), and the connecting component (26) is connected to the boom of the crane (12).
2. The marine transshipment and lifting equipment according to claim 1, characterized in that: The connecting component (26) includes a connecting ear (260) fixedly connected to the slider (24), a slide rod (261) is fixedly provided on the connecting ear (260), and a connecting plate (262) is rotatably provided on the slide rod (261).
3. The marine transshipment lifting equipment according to claim 2, characterized in that: The connecting plate (262) is fixedly provided with a connecting shaft (263) at one end away from the slide bar (261), and an extension plate (264) is rotatably provided on the connecting shaft (263).
4. The marine transshipment lifting equipment according to claim 3, characterized in that: The extension plate (264) is rotatably provided with a fixed shaft (265) at one end away from the connecting shaft (263), and a rotating plate (266) is rotatably provided on the fixed shaft (265). An installation rod (267) is rotatably provided on the rotating plate (266), and the installation rod (267) is fixedly connected to the boom of the crane (12).
5. The marine transshipment lifting equipment according to claim 1, characterized in that: A guide rail (25) is slidably disposed below the slider (24), and the guide rail (25) is fixedly connected to the support platform (1).
6. The marine transshipment lifting equipment according to claim 1, characterized in that: A mechanical seal (27) is slidably provided on the outer side of the connecting rod (23), and the mechanical seal (27) is fixedly connected to the transfer box (20).