A high-stability marine lifting structure

Abstract

This utility model discloses a highly stable marine lifting structure, including a main tower and a rotating arm. The main tower has a rotating arm with four sets of fixed pulleys at its end. Each fixed pulley has four auxiliary traction ropes, and the ends of the auxiliary traction ropes are connected by horizontal plates. Fan-shaped limiting plates are located on both sides of the fixed pulleys, with an arc-shaped plate integrally connected to the arc-shaped surface of each limiting plate. A first guide wheel assembly and a main traction wheel assembly are located on the rotating arm inside the fixed pulleys. A second guide wheel and a third guide wheel are located at the top of the main tower. The four auxiliary traction ropes are led out from the fixed pulleys and connected to the first and second guide wheel assemblies, then led to the bottom of the main tower. The main traction wheel assembly has a main traction rope, one end of which is fixedly connected to the main tower, and the other end, after passing around the main traction wheel assembly, connects to the third guide wheel and is guided downwards to the bottom of the main tower. This utility model provides stable lifting, has a long service life, and meets the high-precision lifting requirements of various marine materials and equipment.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding, and in particular to a highly stable ship lifting structure. Background Technology

[0002] In marine lifting operations, traditional lifting structures often rely on a single traction rope and a single output shaft for drive. During lifting, uneven force can easily cause cargo to sway. Lifting cables are mostly independently distributed without a linkage reinforcement structure. Under load, a single cable is prone to overload and breakage, and the rope is also prone to tangling during winding and unwinding, reducing lifting efficiency. When a motor drives a single output shaft to wind and unwind the steel strand, the output shaft is only stressed on one side, which can easily lead to unbalanced stress on the shaft. Long-term use can cause the output shaft to bend, bearings to wear, and shorten the equipment's lifespan. Especially in complex scenarios such as marine applications, this can easily lead to safety hazards and make it difficult to meet the requirements for stable lifting. Utility Model Content

[0003] The purpose of this invention is to provide a highly stable marine hoisting structure with a stable structure.

[0004] The purpose of this utility model is achieved as follows: A highly stable marine lifting structure includes a main tower and a rotating arm. The rotating arm is mounted on the main tower and is rotatably connected to the main tower via a connecting bracket. Four sets of fixed pulleys are provided at the end of the rotating arm, and four auxiliary traction ropes are mounted on the fixed pulleys. Connecting cross plates are provided at the ends of the four auxiliary traction ropes. Fan-shaped limiting plates are provided on both sides of the fixed pulleys, and an arc-shaped plate is integrally connected to the arc-shaped surface of the fan-shaped limiting plates. A first guide wheel group and a main traction wheel group are provided on the rotating arm inside the fixed pulleys. A second guide wheel and a third guide wheel are provided at the top of the main tower. The four auxiliary traction ropes are led out from the fixed pulleys and connected to the first guide wheel group and the second guide wheel, leading to the bottom of the main tower. A main traction rope is mounted on the main traction wheel group. One end of the main traction rope is fixedly connected to the main tower, and the other end passes around the main traction wheel group and connects to the third guide wheel, guiding it downwards to the bottom of the main tower.

[0005] Preferably, the bottom of the main tower is provided with a first bidirectional output shaft and a second bidirectional output shaft. Two sets of storage drums are provided at both ends of the first bidirectional output shaft, and the four auxiliary traction ropes are respectively connected to the four sets of storage drums on the first bidirectional output shaft. A set of storage drums is provided at both ends of the second bidirectional output shaft, and the two main traction ropes are respectively connected to the storage drums on the second bidirectional output shaft.

[0006] Preferably, there is a gap between the arc-shaped plate and the surface of the fixed pulley, and the diameter of the auxiliary traction rope is greater than the height of the gap.

[0007] Preferably, the main tower is provided with a fourth guide wheel assembly, which consists of six pulleys. The two middle pulleys abut against the main traction rope, and the two outer pulleys abut against the four auxiliary traction ropes.

[0008] Preferably, multiple hoisting cables are symmetrically and evenly distributed along the extended axis below the connecting cross plate; two sets of transverse connecting ropes are provided between the hoisting cables on opposite sides.

[0009] Compared with the prior art, the advantages of this utility model are:

[0010] 1. The system employs a first bidirectional output shaft and a second bidirectional output shaft. The first bidirectional output shaft has two sets of winding drums on each side to evenly wind up and unwind four auxiliary traction ropes. The second bidirectional output shaft has one set of winding drums on each side to smoothly control the two main traction ropes. Compared to the traditional single-output shaft with unilateral force distribution, this structure ensures uniform force distribution on the output shaft, effectively preventing shaft bending and excessive bearing wear, thus extending the equipment's service life. Furthermore, the coordinated operation of multiple traction ropes ensures balanced force distribution on the connecting horizontal plate and the cargo below during lifting, significantly reducing the risk of cargo swaying and improving structural stability and safety during marine lifting operations.

[0011] 2. Multiple lifting cables are symmetrically distributed along the extended axis below the connecting horizontal plate, with transverse connecting ropes between the lifting cables on opposite sides, forming a stable linkage structure. During lifting, the transverse connecting ropes enhance the force coordination among the lifting cables, balance the force on each cable, and avoid uneven force on a single cable caused by factors such as cargo center of gravity shift or ship swaying. This significantly improves the accuracy and reliability of cargo transfer, meeting the high-precision lifting requirements of various marine materials and equipment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a top view of the structure of this utility model.

[0014] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle.

[0015] Figure 4 for Figure 1 Enlarged view of the structure at point B in the middle.

[0016] Figure 5 for Figure 2 Enlarged view of the structure at point C.

[0017] Figure 6 This is a schematic diagram of the structure of the first bidirectional output shaft and the second bidirectional output shaft of this utility model.

[0018] The components include: 1. Main tower; 2. Rotating arm; 3. Fixed pulley; 4. Secondary traction rope; 5. Connecting horizontal plate; 6. Fan-shaped limiting plate; 7. Arc plate; 8. First guide wheel assembly; 9. Main traction wheel assembly; 10. Second guide wheel; 11. Third guide wheel; 12. Main traction rope; 13. First bidirectional output shaft; 14. Second bidirectional output shaft; 15. Storage drum; 16. Fourth guide wheel assembly; 17. Lifting cable; and 18. Horizontal connecting rope. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0020] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-5As shown, a highly stable marine lifting structure includes a main tower 1 and a rotating arm 2. The rotating arm 2 is mounted on the main tower 1 and is rotatably connected to the main tower 1 via a connecting bracket. Four sets of fixed pulleys 3 are provided at the end of the rotating arm 2. Four auxiliary traction ropes 4 are mounted on the fixed pulleys 3, and connecting cross plates 5 are provided at the ends of the four auxiliary traction ropes 4. Fan-shaped limiting plates 6 are provided on both sides of the fixed pulleys 3, and arc-shaped plates 7 are integrally connected to the arc-shaped surfaces of the fan-shaped limiting plates 6. The rotating arm 2 inside the fixed pulleys 3 is provided with a first guide wheel group 8 and a main traction wheel group 9. The top of the main tower 1 is provided with a second guide wheel 10 and a third guide wheel 11. The four auxiliary traction ropes 4 are led out from the fixed pulleys 3 and connected to the first guide wheel group 8 and the second guide wheel 10 and led to the bottom of the main tower 1. The main traction wheel group 9 is provided with a main traction rope 12. One end of the main traction rope 12 is connected and fixed to the main tower 1, and the other end passes around the main traction wheel group 9 and is connected to the third guide wheel 11 and guided downward to the bottom of the main tower 1.

[0023] like Figure 1 , 6 As shown, the main tower 1 has a first bidirectional output shaft 13 and a second bidirectional output shaft 14 at its bottom. The first bidirectional output shaft 13 has two sets of winding drums 15 on both sides, and four auxiliary traction ropes 4 are respectively connected to the four sets of winding drums 15 on the first bidirectional output shaft 13. The second bidirectional output shaft 14 has a set of winding drums 15 on both sides, and two main traction ropes 12 are respectively connected to the winding drums on the second bidirectional output shaft. A set of motors drives the bidirectional output shafts to rotate synchronously, further ensuring the winding and extension of the main traction ropes and auxiliary traction ropes. The bidirectional output shafts and motors can be connected by structures such as gearboxes and worm gearboxes.

[0024] like Figure 3 As shown, there is a gap between the arc plate 7 and the surface of the fixed pulley, and the diameter of the auxiliary traction rope 4 is greater than the height of the gap; this ensures that the auxiliary traction rope is limited and prevents it from slipping out of the groove on the surface of the fixed pulley.

[0025] like Figure 1 , 2 As shown in Figures 3 and 5, the main tower 1 is equipped with a fourth guide wheel group 16, which consists of six pulleys. The two middle pulleys abut against the main traction rope 12, and the two outer pulleys abut against the four auxiliary traction ropes 4. The fourth guide wheel group guides the multiple traction ropes to prevent them from contacting the main tower.

[0026] like Figure 4 As shown, multiple hoisting cables 17 are symmetrically and evenly distributed along the extended axis below the connecting horizontal plate 5; two sets of horizontal connecting ropes 18 are provided between the hoisting cables 17 on opposite sides to avoid swaying or displacement caused by uneven force on a single hoisting cable during hoisting, thereby improving hoisting stability.

[0027] The working principle of this utility model is explained as follows: During operation, the first bidirectional output shaft drives the two side storage drums to rotate, winding and unwinding four auxiliary traction ropes. The auxiliary traction ropes are guided by the fourth guide wheel group, passing sequentially around the first guide wheel group and the fixed pulley, driving the connecting horizontal plate to rise and fall, thus lifting or lowering the cargo. Simultaneously, the second bidirectional output shaft drives the corresponding storage drum to wind and unwind the main traction rope. The main traction rope is driven by the fourth guide wheel group, the main traction wheel group, and the third guide wheel, pulling the rotating arm to rotate around the main tower. During hoisting, the hoisting cables below the connecting horizontal plate are symmetrically stressed, and the transverse connecting ropes enhance the linkage of the cables, balancing the forces on each cable, limiting cargo swaying, and ensuring stable lifting and precise transfer of cargo in marine environments.

[0028] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A high-stability marine hoisting structure, characterized by, The system includes a main tower and a rotating arm. The rotating arm is mounted on the main tower and is rotatably connected to the main tower via a connecting bracket. Four sets of fixed pulleys are located at the ends of the rotating arm, each with four auxiliary traction ropes. A connecting crossplate is located at the end of each auxiliary traction rope. Fan-shaped limiting plates are located on both sides of the fixed pulleys, with an arc-shaped plate integrally connected to the arc-shaped surface of each limiting plate. A first guide wheel set and a main traction wheel set are located on the rotating arm inside the fixed pulleys. A second guide wheel and a third guide wheel are located at the top of the main tower. The four auxiliary traction ropes are led out from the fixed pulleys and connected to the first and second guide wheel sets, leading to the bottom of the main tower. A main traction rope is mounted on the main traction wheel set, with one end fixedly connected to the main tower and the other end passing around the main traction wheel set and connecting to the third guide wheel, guiding downwards to the bottom of the main tower.

2. A high-stability marine hoisting structure according to claim 1, characterized in that, The main tower is provided with a first bidirectional output shaft and a second bidirectional output shaft at its bottom. The first bidirectional output shaft has two sets of storage drums at both ends, and the four auxiliary traction ropes are respectively connected to the four sets of storage drums on the first bidirectional output shaft. The second bidirectional output shaft has a set of storage drums at both ends, and the two main traction ropes are respectively connected to the storage drums on the second bidirectional output shaft.

3. A high-stability marine hoisting structure according to claim 1, characterized in that, There is a gap between the arc-shaped plate and the surface of the fixed pulley, and the diameter of the auxiliary traction rope is greater than the height of the gap.

4. The high-stability marine hoisting structure according to claim 1, characterized in that, The main tower is equipped with a fourth guide wheel assembly, which consists of six pulleys. The two middle pulleys are in contact with the main traction rope, and the two outer pulleys are in contact with the four auxiliary traction ropes.

5. A high-stability marine hoisting structure according to claim 1, characterized in that, Multiple hoisting cables are symmetrically and evenly distributed along the extended axis below the connecting horizontal plate; two sets of horizontal connecting ropes are provided between the hoisting cables on opposite sides.

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