A dynamic side balance marine crane trolley device

Abstract

The utility model discloses a kind of dynamic lateral balance's marine hoisting trolley device, including trolley track and hoist block being set on trolley track by travelling trolley, an inclined anti-sway rope is arranged at the both sides of hoist block, the lower end of each anti-sway rope is connected to hoist block, and the upper end is connected to a take-up mechanism;Take-up mechanism is installed on the synchronous track parallel with trolley track;Take-up mechanism can move along synchronous track, to follow the displacement of hoist block, so that the anti-sway rope of both sides always keeps inclined tension state, realizes the dynamic lateral constraint to hoist block.The utility model can follow hoist block movement and automatically adjust rope tension by making anti-sway mechanism, realize the initiative, full-stroke suppression to its lateral swing.

Description

Technical Field

[0001] This utility model belongs to the field of marine crane technology, and in particular relates to a dynamic lateral balance marine crane device. Background Technology

[0002] When ships are sailing or operating, the influence of wind and waves causes multi-degree-of-freedom swaying, resulting in severe lateral swaying of the hoists and loads of overhead cranes on decks or in cabins. This swaying not only seriously threatens the safety and accuracy of lifting operations but may also cause equipment collisions and cargo damage. Current technologies often add rigid guide rods or simple passive cables to the hoists to attempt to suppress swaying. However, rigid guide rods are prone to generating huge internal forces when there is relative displacement between the hull and the hoist, leading to structural damage; while passive cables cannot adjust with the large-scale movement of the hoist, often becoming loose and failing in some positions or over-tensioned in others, interfering with normal operation. Neither can achieve effective, adaptive anti-sway control throughout the entire stroke. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a dynamic lateral balancing marine crane device, which enables the anti-sway mechanism to follow the movement of the hoist and automatically adjust the tension of the pull rope, thereby achieving active and full-stroke suppression of its lateral sway.

[0004] Technical Solution: To achieve the above objectives, this utility model provides a dynamic lateral balancing marine crane device, comprising a crane track and a crane hoist mounted on the crane track via a traveling trolley. An inclined anti-sway rope is installed on each side of the crane hoist, with the lower end of each anti-sway rope connected to the crane hoist and the upper end connected to a rope winding / unwinding mechanism. The rope winding / unwinding mechanism is installed on a synchronous track parallel to the crane track. The rope winding / unwinding mechanism can move along the synchronous track to follow the displacement of the crane hoist, ensuring that the anti-sway ropes on both sides remain in an inclined and taut state, thereby achieving dynamic lateral constraint on the crane hoist.

[0005] Furthermore, the anti-sway rope is drawn out from its corresponding rope retraction mechanism, extends downward at an angle, and connects to the side plate of the hoist.

[0006] Furthermore, a tension detection device is connected between the lower end of the anti-sway rope and the side plate of the hoist. The tension detection device can detect the tension of the anti-sway rope and generate a signal to control the rope winding and unwinding mechanism to perform rope winding or unwinding actions, so that the two anti-sway ropes connected to both sides of the hoist apply the same tension to the hoist.

[0007] Furthermore, both ends of the tension detection device are respectively hinged to the side plate of the hoist and the lower end of the anti-sway rope via hinged structures.

[0008] Furthermore, the tension detection device includes two oppositely arranged end plates and a component assembly connected between the two end plates. The component assembly includes at least one high-strength elastic connection part and at least one elastic tension detection part.

[0009] Furthermore, the high-strength elastic connection is a high-strength spring or a high-strength elastic telescopic rod.

[0010] Furthermore, the elastic tension detection unit is composed of an elastic body and a tension sensor connected coaxially.

[0011] Furthermore, the tension detection device also includes a guide rod, one end of which is fixedly connected to one of the end plates, and the other end slides through another end plate, with a limiting and anti-detachment structure provided at the end of the rod.

[0012] Beneficial effects: This utility model uses a synchronous track to ensure that the restraining effect of the anti-sway rope covers the entire stroke of the hoist. Through tension detection and closed-loop control of the rope winding and unwinding mechanism, it achieves dynamic self-balancing of the tension on both sides. It can actively apply a control force opposite to the direction of lateral disturbance force, suppressing the sway at the initial stage rather than resisting it after the sway occurs. This greatly improves the real-time performance and effectiveness of anti-sway, and enhances the stability, safety, and operational efficiency of shipborne lifting operations in swaying environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the tension detection device. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figure 1As shown, a dynamic lateral balancing marine crane device includes a crane track 1 and a crane hoist 3 mounted on the crane track 1 via a traveling trolley 2. An inclined anti-sway rope 4 is installed on each side of the crane hoist 3. The lower end of each anti-sway rope 4 is connected to the crane hoist 3, and the upper end is connected to a rope winding / unwinding mechanism 5. The rope winding / unwinding mechanism 5 is installed on a synchronous track 8 parallel to the crane track 1. The rope winding / unwinding mechanism 5 can move along the synchronous track 8 to follow the displacement of the crane hoist 3, ensuring that the anti-sway ropes 4 on both sides are always kept in an inclined and taut state, thus achieving dynamic lateral constraint on the crane hoist 3. The rope retraction mechanism 5 moves synchronously along the synchronous track 8, following the lifting movement of the hoist 3. When the hoist 3 experiences lateral displacement due to ship swaying or its own propulsion, the anti-sway ropes 4 on both sides maintain a geometrically stable, inclined V-shaped or figure-eight-shaped tension state, regardless of the hoist 3's position on the track 1. This structure fundamentally solves the problem of slack failure in some strokes of traditional fixed or non-following cables, achieving anti-sway constraint coverage of the hoist 3's entire working stroke. Dynamic following ensures that the constraint direction of the ropes always effectively counteracts the possible swing direction of the hoist 3, transforming the potential free swing into a controlled, small elastic displacement constrained by the flexible tensioning system. This achieves dynamic lateral constraint on the hoist 3, ensuring that the anti-sway ropes 4 maintain an effective inclined tension state in any working position, providing a continuous and directional lateral constraint force to the hoist 3.

[0017] The rope winding and unwinding mechanism 5 can be a winch.

[0018] The anti-sway rope 4 is led out from its corresponding rope winding mechanism 5, extends downward at an angle and connects to the side plate of the hoist 3, and applies the constraint force directly to the side of the center of gravity of the hoist 3. It has the shortest lever arm, the highest control efficiency, and can generate the torque that resists lateral swaying most directly, avoiding additional torque or control lag caused by the connection point being too high or too low.

[0019] like Figure 1As shown, a tension detection device 6 is connected between the lower end of the anti-sway rope 4 and the side plate of the hoist 3. The tension detection device 6 detects the tension of the anti-sway rope 4 and generates a signal to control the rope winding and unwinding mechanism 5 to perform rope winding or unwinding actions, so that the two anti-sway ropes 4 connected to both sides of the hoist 3 apply the same tension to the hoist 3. The tension detection device 6 monitors the tension of its assigned anti-sway rope 4 in real time. When the ship's swaying causes the hoist 3 to tilt to one side, the tension of the rope on that side increases, while the tension on the other side decreases. The tension detection device 6 transmits the detected tension signal (such as an electrical signal) to the system controller. After comparing the signals from both sides, the controller issues a command to control the rope winding and unwinding mechanism 5: appropriately unwinding the rope on the side with excessive tension to alleviate overload, and appropriately winding the rope on the side with insufficient tension to restore tension. It can sense the imbalance of tension on both sides in real time (foreshadowing the impending swing) and actively adjust the rope length to keep the tension on both sides equal, maintaining a dynamic force balance. It can actively sense the trend of imbalance and correct it in advance, applying a reverse balancing force before the lateral swing has become obvious, thereby significantly suppressing the amplitude and acceleration of the swing, achieving the purpose of active vibration reduction and stabilization.

[0020] The two ends of the tension detection device 6 are respectively hinged to the side plate of the hoist 3 and the lower end of the anti-sway rope 4 through the hinge structure 7, which eliminates the bending moment at the connection of the two ends of the tension detection device 6, ensuring that the device only bears pure axial tension, making the tension detection signal more accurate, and at the same time avoiding damage to the structural components due to bearing unexpected bending moments, thus improving reliability and measurement accuracy.

[0021] like Figure 2 As shown, the tension detection device 6 includes two opposing end plates 61 and a component assembly connecting the two end plates 61. The component assembly includes at least one high-strength elastic connection 62 and at least one elastic telescopic tension detection unit 63. In a static or equilibrium state, the distance between the two end plates 61 is fixed. When subjected to axial tension, the high-strength elastic connection 62 undergoes controllable, linear elastic deformation (tension), allowing relative displacement of the two end plates 61. Simultaneously, the elastic telescopic tension detection unit 63 also undergoes synchronous telescopic deformation, directly detecting or detecting the tension value through associated sensors during this process. The high-strength elastic connection 62 provides primary mechanical compliance and safe travel, absorbing impact energy; the elastic telescopic tension detection unit 63 accurately captures the force signal during this elastic deformation process. The entire device has a compact structure, integrating force transmission, buffering, and measurement into a single component, resulting in fast response and high reliability.

[0022] More specifically, the high-strength elastic connection 62 is a high-strength spring or a high-strength elastic telescopic rod. It can be a high-strength helical compression spring (which extends when under tension), a high-strength disc spring assembly, or an elastic telescopic rod made of high-performance elastic materials (such as special rubber).

[0023] More specifically, the elastic tension detection unit 63 is composed of an elastic body 631 and a tension sensor 632 connected coaxially, which ensures that the tension sensor 632 measures pure axial tension, which is directly related to the deformation of the entire elastic tension detection unit 63, and has good signal linearity, high accuracy and rapid response.

[0024] The tension detection device 6 also includes a guide rod 64. One end of the guide rod 64 is fixedly connected to one of the end plates 61, and the other end slides through the other end plate 61. A limiting and anti-detachment structure 65, such as a nut, a retaining ring, or an enlarged rod head, is provided at the end of the rod. The guide rod 64 provides precise axial guidance for the relative movement of the core functional components (elastic connection part 62 and tension detection part 63), preventing the two end plates 61 from shifting, twisting, or becoming misaligned during the stress process. This ensures that the tension is always transmitted along the axis, allowing the elastic components and sensors to operate in optimal condition, improving the accuracy and consistency of force detection and the overall structural rigidity and stability of the device. The limiting and anti-detachment structure 65 is an important safety feature, preventing component separation in extreme situations and ensuring safety.

[0025] In summary, this invention uses a synchronous track to ensure that the restraining effect of the anti-sway rope covers the entire stroke of the hoist. Through tension detection and closed-loop control of the rope winding and unwinding mechanism, it achieves dynamic self-balancing of the tension on both sides. It can actively apply a control force opposite to the direction of lateral disturbance force, suppressing the sway at the initial stage rather than resisting it after the sway occurs. This greatly improves the real-time performance and effectiveness of anti-sway, and enhances the stability, safety, and operational efficiency of shipborne lifting operations in swaying environments.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dynamic lateral balancing marine crane device, comprising a crane rail (1) and a hoist (3) mounted on the crane rail (1) via a traveling trolley (2), characterized in that: An inclined anti-sway rope (4) is provided on each side of the hoist (3). The lower end of each anti-sway rope (4) is connected to the hoist (3), and the upper end is connected to a rope winding and unwinding mechanism (5). The rope winding and unwinding mechanism (5) is installed on a synchronous track (8) parallel to the trolley track (1). The rope winding and unwinding mechanism (5) can move along the synchronous track (8) to follow the displacement of the hoist (3), so that the anti-sway ropes (4) on both sides are always kept in an inclined tension state, thereby realizing dynamic lateral constraint on the hoist (3).

2. The marine crane device with dynamic lateral balancing according to claim 1, characterized in that: The anti-sway rope (4) is drawn out from its corresponding rope winding mechanism (5), extends downward at an angle, and is connected to the side plate of the hoist (3).

3. The marine crane device with dynamic lateral balancing according to claim 2, characterized in that: The lower end of the anti-sway rope (4) is connected to the side plate of the hoist (3) by a tension detection device (6). The tension detection device (6) can detect the tension of the anti-sway rope (4) and generate a signal to control the rope winding and unwinding mechanism (5) to perform rope winding or unwinding actions so that the two anti-sway ropes (4) connected to both sides of the hoist (3) apply the same tension to the hoist (3).

4. The marine crane device with dynamic lateral balancing according to claim 3, characterized in that: The two ends of the tension detection device (6) are respectively hinged to the side plate of the hoist (3) and the lower end of the anti-sway rope (4) through the hinge structure (7).

5. A dynamically laterally balanced marine crane device according to claim 4, characterized in that: The tension detection device (6) includes two oppositely arranged end plates (61) and a component group connected between the two end plates (61). The component group includes at least one high-strength elastic connection part (62) and at least one elastic telescopic tension detection part (63).

6. A dynamically laterally balanced marine crane device according to claim 5, characterized in that: The high-strength elastic connection part (62) is a high-strength spring or a high-strength elastic telescopic rod.

7. A dynamically laterally balanced marine crane device according to claim 5, characterized in that: The elastic tension detection unit (63) is composed of an elastic body (631) and a tension sensor (632) connected coaxially.

8. A dynamically laterally balanced marine crane device according to claim 5, 6, or 7, characterized in that: The tension detection device (6) also includes a guide rod (64), one end of which is fixedly connected to one of the end plates (61), and the other end slides through the other end plate (61), and a limiting anti-detachment structure (65) is provided at the end of the rod.

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