A large-tonnage container hoisting anti-swing quay crane spreader device

Abstract

The present application relates to the technical field of crane, in particular to a large-tonnage container hoisting anti-swing quay crane lifting device, including a lifting device body, the top of the lifting device body is provided with two damping anti-swing units, the damping anti-swing unit includes a damping ring and an elastic reset assembly, the damping ring can move in translation at the top of the lifting device body; the elastic reset assembly has a pressure part, the pressure part keeps contact with the inner ring of the damping ring, by setting two damping anti-swing units at the top of the lifting device body, the two damping rings cooperate with each other, when the lifting device body swings, the damping ring will move relative to the lifting device body, the relative movement generated by the damping ring can consume the swing energy of the lifting device body, so that the swing amplitude is greatly reduced, the elastic reset assembly cooperates with the damping ring, guides the damping ring to reset when the lifting device body is stationary, so that the damping ring can continuously consume the swing energy of the lifting device body, solve the problem that the existing container lifting device is prone to shaking when hoisting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cranes, in particular to a large-tonnage container hoisting anti-swing quay crane spreader device. BACKGROUND

[0002] In modern port logistics operations, efficient and safe hoisting of large-tonnage containers is a key link to ensure the rapid flow of goods. As the core equipment for container loading and unloading, the spreader of the quay crane frequently swings during the process of suspending the container, which has a significant impact.

[0003] From the operation process, when the spreader lifts the container, the acceleration change at the start of the lifting mechanism will cause inertial force of the container, thereby causing the spreader to swing. During the movement of the spreader along the quay direction and the movement of the trolley perpendicular to the quay direction, the impact force during start, stop or speed adjustment will also be transmitted to the spreader, intensifying the degree of swing. In addition, when hoisting to the designated position, the collision reaction force at the moment of contact between the container and the placement surface will also cause the spreader to sway.

[0004] External environmental factors are also an important reason for the swing of the spreader. The wind in the port area changes frequently, and the horizontal force exerted by the wind on the container and the spreader will cause the spreader to deviate from the balance position. Moreover, the uncertainty of wind size and direction makes it more difficult to predict and control the swing of the spreader. If strong winds are encountered, the large-scale swing of the spreader may even threaten the structural safety of the entire quay crane. At the same time, in some specific areas, such as near the river estuary or complex terrain ports, water flow-induced ground vibration and tidal changes will also affect the quay crane foundation, indirectly causing the spreader to sway during hoisting.

[0005] Patent document No. CN115385219B discloses a safety type spreader device for a human cargo crane, which relates to the technical field of spreader devices, comprising a device body, a disturbance prevention mechanism is rotatably connected to the top of the device body, a protective cylinder and a roller device are fixedly connected to the top of the disturbance prevention mechanism, and a stabilizing mechanism is fixedly connected to the side of the device body. The safety type spreader device for a human cargo crane, the roller device is connected with a lifting line, four lifting holes are formed in the top of the container for loading goods, and the bottom of the stabilizing mechanism extends into the lifting hole, thereby lifting and moving the container.

[0006] The spreader only resists wind force by rotating the device body to make the small surface of the container face the wind, but in actual application, the stress characteristics of different specifications and tonnages of containers in the wind differ greatly. For some large-tonnage containers, simple rotation cannot accurately adjust to the optimal wind- facing angle, resulting in a significant reduction in wind protection effect, and still cannot effectively prevent swinging in strong wind environments, thereby causing safety accidents. SUMMARY

[0007] In order to solve the problems in the prior art, the present application provides a large-tonnage container hoisting anti-swing quay crane spreader device, which comprises a spreader body, the top end of the spreader body is provided with two damping anti-swing units arranged along the length direction thereof, the damping anti-swing unit comprises a damping ring and an elastic reset assembly, the damping ring can perform translational motion at the top end of the spreader body, and the damping ring always maintains a parallel state with the plane at the top end of the spreader body during the motion process; the elastic reset assembly is arranged at the top end of the spreader body and located at the inner ring position of the damping ring, the elastic reset assembly has a pressure part, the pressure part is in contact with the inner ring of the damping ring, when the damping ring produces displacement relative to the spreader body, the damping ring needs to overcome the force exerted by the pressure part, and the force increases in proportion to the increase of the moving distance of the damping ring.

[0008] In order to solve the problems in the prior art, the present application provides a large-tonnage container hoisting anti-swing quay crane spreader device, which comprises a spreader body, the top end of the spreader body is provided with two damping anti-swing units arranged along the length direction thereof, the damping anti-swing unit comprises a damping ring and an elastic reset assembly, the damping ring can perform translational motion at the top end of the spreader body, and the damping ring always maintains a parallel state with the plane at the top end of the spreader body during the motion process; the elastic reset assembly is arranged at the top end of the spreader body and located at the inner ring position of the damping ring, the elastic reset assembly has a pressure part, the pressure part is in contact with the inner ring of the damping ring, when the damping ring produces displacement relative to the spreader body, the damping ring needs to overcome the force exerted by the pressure part, and the force increases in proportion to the increase of the moving distance of the damping ring.

[0009] Preferably, the elastic reset assembly further comprises a stand arranged at the top end of the spreader body, the stand extends along the direction perpendicular to the spreader body, the pressure part is a pressure ring, the pressure ring is coaxially and slidingly arranged on the stand, the inner diameter of the damping ring is greater than the diameter of the stand, and the pressure ring and the inner ring of the damping ring form inclined surface contact cooperation.

[0010] Preferably, the stand is provided with a limiting ring coaxial therewith, the limiting ring is located at the top of the pressure ring, and an elastic element distributed along the circumference of the stand is arranged between the limiting ring and the pressure ring, so that the pressure ring and the pressure ring form elastic contact.

[0011] Preferably, the pressure ring is provided with a stand column distributed along the circumference of the stand, and the stand column slides upward and penetrates through the limiting ring.

[0012] Preferably, the limiting ring is coaxially and slidingly arranged on the stand, the stand is hollow and an oil cylinder is arranged in the stand, an output rod of the oil cylinder extends along the height direction of the stand, a driving ring is arranged on the output rod of the oil cylinder, and the driving ring and the limiting ring are in transmission connection.

[0013] Preferably, a guide groove is arranged on the pedestal in a circumferential direction, a convex ring coaxial with the limiting ring is arranged on the limiting ring, a connecting bolt is arranged on the convex ring in a circumferential direction, the connecting bolt extends along the radial direction of the convex ring, and one end of the connecting bolt is connected with the driving ring after passing through the guide groove.

[0014] Preferably, the inner diameter of the damping ring gradually increases from bottom to top to form a first tapered surface, and the outer side of the pressure ring is in contact with the first tapered surface to form an inclined surface cooperation.

[0015] Preferably, the outer diameter of the pressure ring gradually increases from bottom to top to form a second tapered surface, and the inner side of the damping ring is in contact with the second tapered surface to form an inclined surface cooperation.

[0016] Preferably, the inner diameter of the damping ring gradually increases from bottom to top to form a third tapered surface, the outer diameter of the pressure ring gradually increases from bottom to top to form a fourth tapered surface, and the third tapered surface is in contact with the fourth tapered surface to form an inclined surface cooperation.

[0017] Preferably, the contact surface of the damping ring and the sling body is provided with a ball, and a rolling fit is formed between the damping ring and the sling body.

[0018] The beneficial effects of the present application compared with the prior art are:

[0019] The present application realizes effective inhibition of sling swing by arranging two damping anti-swing units at the top end of the sling body. The damping rings in the two damping anti-swing units cooperate with each other to form a cooperative anti-swing mechanism. When the sling body swings due to factors such as lifting, braking, and wind, the damping ring will move horizontally relative to the sling body based on inertia. This relative movement can gradually consume the energy contained in the sling body swing, thereby greatly reducing the swing amplitude.

[0020] Meanwhile, the elastic reset assembly in the present application cooperates with the damping ring. When the sling body stops swinging and is in a static state, the elastic reset assembly can guide the damping ring to return to the initial position. This ensures that the damping ring can start working in the best initial state every time the sling swings, thereby continuously and efficiently consuming the swing energy of the sling body.

[0021] Compared with existing container slings, the present application fundamentally solves the problem of easy swaying during lifting. The existing slings often lack such efficient energy consumption and reset mechanism, making it difficult to effectively control the swing problem when facing complex working conditions. The design of the two damping anti-swing units and the elastic reset assembly of the present application provides a reliable and stable anti-swing solution for large-tonnage container hoisting, significantly improving the safety and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of an anti-sway quay crane hoisting device for lifting large-tonnage containers according to the present invention.

[0023] Figure 2 The present invention is a cross-sectional view of a damping anti-sway unit in an anti-sway quay crane hoisting device for lifting large-tonnage containers.

[0024] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0025] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.

[0026] Figure 5 It is a stereoscopic diagram of a damping ring and an elastic reset assembly in an anti-sway quay crane hoisting device for lifting large-tonnage containers according to the present invention.

[0027] Figure 6 The present invention is a three-dimensional exploded view of an elastic reset component in an anti-sway quay crane hoisting device for lifting large-tonnage containers.

[0028] Figure 7 The present invention is a three-dimensional exploded view of a stand and a cylinder in an anti-sway quay crane hoisting device for lifting large-tonnage containers.

[0029] Figure 8 The present invention is a schematic diagram of a first embodiment of a damping ring and a pressure ring in an anti-sway quay crane hoisting device for lifting large-tonnage containers.

[0030] Figure 9 It is a schematic diagram of a second embodiment of a damping ring and a pressure ring in an anti-sway quay crane hoisting device for lifting large-tonnage containers according to the present invention.

[0031] Figure 10 The present invention is a schematic diagram of a third embodiment of a damping ring and a pressure ring in an anti-sway quay crane hoisting device for lifting large-tonnage containers.

[0032] The numbers in the figure are: 1. sling body; 21. damping ring; 22. elastic reset assembly; 221. pressure part; 222. seat; 2221. guide groove; 223. limiting ring; 2231. convex ring; 224. elastic element; 225. column; 226. cylinder; 227. drive ring; 228. connecting bolt; 23. ball. DETAILED DESCRIPTION

[0033] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application is described in further detail below in conjunction with the drawings and specific embodiments.

[0034] As shown in Figure 1 and Figure 2 A large-tonnage container hoisting anti-swing quay crane spreader device includes a spreader body 1, the top end of the spreader body 1 is provided with two damping anti-swing units arranged along the length direction thereof, the damping anti-swing unit includes a damping ring 21 and an elastic reset assembly 22, the damping ring 21 can perform translational motion at the top end of the spreader body 1, and the damping ring 21 always maintains a parallel state with the plane where the top end of the spreader body 1 is located during the motion process; the elastic reset assembly 22 is arranged at the top end of the spreader body 1 and located at the inner ring position of the damping ring 21, the elastic reset assembly 22 has a pressure part 221, the pressure part 221 maintains a contact state with the inner ring of the damping ring 21, when the damping ring 21 produces displacement relative to the spreader body 1, the damping ring 21 needs to overcome the action force exerted by the pressure part 221, and the action force is proportional to the increase of the moving distance of the damping ring 21.

[0035] The height of a single damping anti-swing unit is relatively low, that is, the overall height of the spreader body 1 is reduced, and the center of gravity is also correspondingly reduced. During hoisting and transportation, especially when encountering external disturbances such as wind and vibration, the lower center of gravity can make the spreader body 1 more stable, reduce the risk of shaking and overturning, and improve the safety of the operation.

[0036] The single damping anti-swing unit has relatively limited capacity when consuming the spreader swing energy. However, the two damping anti-swing units work cooperatively to consume the spreader swing energy from different directions and angles. When the spreader swings, one damping ring 21 can also play a role in the energy consumption process while the other damping ring 21 is consuming energy, forming a more powerful energy consumption resultant force, which can more efficiently and quickly reduce the swing amplitude of the spreader and speed up the recovery of the spreader to a stable state.

[0037] The two damping anti-swing units can provide more balanced and stable anti-swing effect for the spreader. If there is only one damping anti-swing unit, once the unit fails or the anti-swing effect is poor under certain working conditions, the spreader swing will be difficult to control. However, the two units cooperate with each other, even if one of them has a temporary problem, the other can still maintain a certain anti-swing effect, ensuring the safe continuation of the hoisting operation, and greatly improving the stability and reliability of the entire anti-swing system.

[0038] Each damping and anti-sway unit consists of a damping ring 21 and an elastic reset assembly 22. The damping ring 21 is capable of smooth translational motion at the top of the spreader body 1. Throughout its motion, the damping ring 21 maintains a stable position parallel to the plane of the top of the spreader body 1. When the spreader body 1 swings due to factors such as lifting, braking, and wind, the damping ring 21 moves horizontally relative to the spreader body 1 due to inertia. This relative motion gradually dissipates the energy contained in the swing of the spreader body 1, thereby significantly reducing the swing amplitude.

[0039] The elastic reset assembly 22 is mounted at the top of the spreader body 1 and positioned within the inner ring of the damping ring 21. The elastic reset assembly 22 includes a pressure portion 221, which maintains close contact with the inner ring of the damping ring 21 at all times. When the spreader body 1 swings due to various complex factors during lifting operations, such as acceleration changes during lifting, start-stop shocks during operation, and external wind interference, causing the damping ring 21 to displace relative to the spreader body 1, the damping ring 21 must overcome the force applied by the pressure portion 221. This force increases in strict proportion to the distance traveled by the damping ring 21. That is, with each additional distance traveled by the damping ring 21, the force applied by the pressure portion 221 increases according to a predetermined ratio. This allows the damping ring 21 to dissipate the spreader's swing energy with extreme efficiency and precision, effectively suppressing the spreader's swing amplitude and significantly improving the stability and safety of large-tonnage container lifting operations.

[0040] like Figure 2 and Figure 3 As shown, the elastic reset assembly 22 also includes a seat 222 arranged at the top of the sling body 1, and the seat 222 extends in a direction perpendicular to the sling body 1. The pressure portion 221 is a pressure ring, and the pressure ring is coaxially slidably arranged on the seat 222. The inner diameter of the damping ring 21 is larger than the diameter of the seat 222, and the pressure ring forms an inclined contact fit with the inner ring of the damping ring 21.

[0041] Balls 23 are provided on the contact surfaces of the damping ring 21 and the pressure ring, and a rolling fit is formed between the damping ring 21 and the pressure ring to reduce wear.

[0042] The stand 222 is arranged at the top end of the lifting appliance body 1. The pressure part 221 adopts a pressure ring structure, the pressure ring is coaxially sleeved on the stand 222 and can slide freely along the stand 222. The inner diameter of the damping ring 21 is larger than the diameter of the stand 222, so that the damping ring 21 has sufficient moving space relative to the stand 222, and the pressure ring is in contact with the inner ring of the damping ring 21 through a slope. The pressure ring transmits the force to the damping ring 21 through the slope, and when the damping ring 21 moves relative to the lifting appliance body 1, the pressure ring can increase the force on the damping ring 21 according to the moving distance of the damping ring 21 in a predetermined proportion, efficiently consume the swing energy of the lifting appliance, and effectively suppress the swing amplitude.

[0043] In order to further improve the performance of the device and reduce the wear of the parts, a plurality of rolling balls 23 are arranged on the contact surface between the damping ring 21 and the pressure ring. The existence of the rolling balls 23 changes the traditional sliding friction between the damping ring 21 and the pressure ring into rolling fit, greatly reduces the friction, reduces the wear of the parts, prolongs the service life of the device, and guarantees the long-term stable anti-swing effect.

[0044] As shown in ,

[0047] , and

[0048] , the stand 222 is provided with a limiting ring 223 coaxial with the stand 222, the limiting ring 223 is located at the top of the pressure ring, and the limiting ring 223 and the pressure ring are provided with elastic elements 224 distributed circumferentially along the stand 222, and the pressure ring and the pressure ring form elastic contact.

[0045] The limiting ring 223 and the pressure ring are provided with elastic elements 224 uniformly distributed circumferentially along the stand 222. The elastic elements 224 such as springs have good elastic deformation ability. In the installed state, one end of the elastic element 224 is closely connected with the limiting ring 223, and the other end is connected with the pressure ring, so that the pressure ring and the limiting ring 223 form elastic contact. When the damping ring 21 moves relative to the lifting appliance body 1 and drives the pressure ring to slide on the stand 222, the elastic element 224 will be compressed or stretched accordingly. The force generated by the elastic deformation will act on the pressure ring, so that the pressure ring can stably and adjustably contact the inner ring slope of the damping ring 21, thereby accurately providing an increasing force proportional to the moving distance according to the movement of the damping ring 21, effectively consuming the swing energy of the lifting appliance body 1. When the lifting appliance body 1 is stationary, the elastic element 224 can assist the pressure ring and the damping ring 21 to reset, so as to continue to play the anti-swing role when the lifting appliance swings next time.

[0046] As shown in Figure 3 and Figure 6 , the pressure ring is provided with a stand 225 distributed circumferentially along the stand 222, and the stand 225 slides upward and penetrates the limiting ring 223.

[0047] The column 225 is fixedly connected with the pressure ring and slides upward through the limiting ring 223. The sliding fit between the column 225 and the limiting ring 223 provides accurate guidance for the up-down movement of the pressure ring, ensures the smooth sliding process of the pressure ring on the stand 222, avoids the inclination or shaking of the pressure ring during the movement, and thus guarantees that the pressure ring can continuously and stably keep good inclined surface contact with the inner ring of the damping ring 21, enhancing the working stability and reliability of the entire damping anti-swing unit.

[0048] As shown in Figure 3 , Figure 6 and Figure 7 , the limiting ring 223 is coaxially and slidingly arranged on the stand 222, the stand 222 is hollow and has an oil cylinder 226 arranged therein, the output rod of the oil cylinder 226 extends along the height direction of the stand 222, the output rod of the oil cylinder 226 is provided with a driving ring 227, and the driving ring 227 is in transmission connection with the limiting ring 223.

[0049] The sliding of the limiting ring 223 driven by the oil cylinder 226 can further adjust the initial compression amount of the elastic element 224, and thus flexibly adjust the initial acting force of the pressure ring on the damping ring 21 to adapt to the requirements of the anti-swing performance of the lifting appliance under different lifting conditions.

[0050] In actual application, the lifting appliance body 1 may face various working conditions and load situations. By adjusting the moving resistance of the damping ring 21 (i.e. the pressure of the pressure ring on the damping ring 21), the anti-swing effect can be optimized according to the specific working condition. For example, when the lifting appliance body 1 lifts a lighter container, the moving resistance is appropriately reduced, i.e. the oil cylinder 226 drives the driving ring 227 and the limiting ring 223 to move upward, thereby stretching the elastic element 224, so that the damping ring 21 can more sensitively respond to the swing of the lifting appliance body 1 and better play the damping effect; when a heavier container is lifted, the moving resistance is increased, i.e. the oil cylinder 226 drives the driving ring 227 and the limiting ring 223 to move downward, thereby compressing the elastic element 224, to ensure that the damping ring 21 can withstand greater impact force and inertial force and effectively suppress the swing of the lifting appliance.

[0051] As shown in Figure 7 , the stand 222 is provided with a guide groove 2221 distributed along the circumference thereof, the limiting ring 223 is provided with a convex ring 2231 coaxial therewith, the convex ring 2231 is provided with a connecting bolt 228 distributed along the circumference thereof, the connecting bolt 228 extends along the radial direction of the convex ring 2231, and one end of the connecting bolt 228 is connected with the driving ring 227 after penetrating through the guide groove 2221.

[0052] When the driving ring 227 is moved by an external power source (for example, the output rod of the oil cylinder 226 arranged in the hollow structure of the stand 222), the driving ring 227 drives the limiting ring 223 through the connecting bolt 228. Since the connecting bolt 228 slides in the guide groove 2221, the guide groove 2221 precisely guides and restricts the relative movement between the stand 222 and the limiting ring 223, so that the limiting ring 223 can only smoothly slide coaxially along the circumferential direction of the stand 222 according to the trajectory defined by the guide groove 2221.

[0053] As shown in Figure 8 , the inner diameter of the damping ring 21 gradually increases from bottom to top to form a first tapered surface, and the outer side of the pressure ring is in contact with the first tapered surface to form a bevel cooperation.

[0054] As the first embodiment of the damping ring 21 and the pressure ring, the inner diameter of the damping ring 21 gradually increases from bottom to top to form a first tapered surface. The outer side of the pressure ring is in contact with the first tapered surface of the damping ring 21, and the two form a bevel cooperation. When the body 1 of the sling swings to cause the relative movement of the damping ring 21, the pressure ring will change the acting force according to the movement of the damping ring 21 due to the bevel cooperation. With the increase of the moving distance of the damping ring 21, the acting force of the pressure ring on the damping ring 21 increases in proportion, thereby efficiently consuming the energy generated by the swing of the sling and effectively inhibiting the swing amplitude of the sling.

[0055] As shown in Figure 9 , the outer diameter of the pressure ring gradually increases from bottom to top to form a second tapered surface, and the inner side of the damping ring 21 is in contact with the second tapered surface to form a bevel cooperation.

[0056] As the second embodiment of the damping ring 21 and the pressure ring, the outer diameter of the pressure ring gradually increases from bottom to top to form a second tapered surface. The inner side of the damping ring 21 is in contact with the second tapered surface of the pressure ring, and the two form a bevel cooperation. When the body 1 of the sling swings to cause the relative movement of the damping ring 21, the pressure ring will change the acting force according to the movement of the damping ring 21 based on the characteristics of the bevel cooperation. With the increase of the moving distance of the damping ring 21, the acting force of the pressure ring on the damping ring 21 increases in proportion, thereby efficiently consuming the energy generated by the swing of the sling and effectively inhibiting the swing amplitude of the sling.

[0057] As shown in Figure 10 , the inner diameter of the damping ring 21 gradually increases from bottom to top to form a third tapered surface, and the outer diameter of the pressure ring gradually increases from bottom to top to form a fourth tapered surface, and the third tapered surface is in contact with the fourth tapered surface to form a bevel cooperation.

[0058] As a third embodiment of the damping ring 21 and the pressure ring, the inner diameter of the damping ring 21 gradually increases from bottom to top to form a third tapered surface. The outer diameter of the pressure ring also gradually increases from bottom to top to form a fourth tapered surface. When the damping ring 21 is in the initial position, the third tapered surface of the damping ring 21 precisely butts against the fourth tapered surface of the pressure ring, achieving a close bevel surface fit. This fit not only provides a larger contact area for force transmission between the damping ring 21 and the pressure ring, ensuring uniform and stable force, but also, during subsequent swinging of the hoist body 1, as the damping ring 21 moves, based on the geometric properties of the tapered surface, the pressure ring can accurately and efficiently output a proportional increasing force according to the movement distance of the damping ring 21, so that the damping ring 21 moves relative to the hoist body 1 under the action of this force, effectively suppressing the swinging of the hoist body 1.

[0059] As shown in Figure 4 The contact surface between the damping ring 21 and the hoist body 1 is provided with a ball 23, and a rolling fit is formed between the damping ring 21 and the hoist body 1.

[0060] Compared with the traditional sliding contact mode, the rolling fit significantly reduces the friction between the damping ring 21 and the hoist body 1. This not only makes the translational movement of the damping ring 21 on the top end of the hoist body 1 more smooth, enabling it to respond more quickly to the swinging of the hoist and timely play a role in preventing swinging, but also reduces the wear and tear between components, prolonging the service life of the device.

[0061] The above embodiments only express one or several embodiments of the present application, which are described in detail and specifically, but should not be understood as limiting the protection scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A large-tonnage container hoisting anti-swing quay crane spreader device comprising a spreader body, characterized in that, The top end of the sling body is provided with two damping anti-swing units arranged along the length direction thereof, the damping anti-swing unit comprises a damping ring and an elastic reset assembly, the damping ring can perform translational motion at the top end of the sling body, and the damping ring always maintains a parallel state with the plane where the top end of the sling body is located during the motion; the elastic reset assembly is arranged at the top end of the sling body and located at the inner ring position of the damping ring, the elastic reset assembly has a pressure part, the pressure part maintains a contact state with the inner ring of the damping ring, when the damping ring generates displacement relative to the sling body, the damping ring needs to overcome the force exerted by the pressure part, and the force is proportional to the increase of the moving distance of the damping ring; The elastic reset assembly further comprises a stand arranged at the top end of the sling body, the stand extends along the direction perpendicular to the sling body, the pressure part is a pressure ring, the pressure ring is coaxially and slidingly arranged on the stand, the inner diameter of the damping ring is greater than the diameter of the stand, and the pressure ring and the inner ring of the damping ring form an inclined surface contact fit; The stand is provided with a limiting ring coaxial therewith, the limiting ring is located at the top of the pressure ring, and an elastic element is arranged between the limiting ring and the pressure ring in a circumferential direction of the stand, and the pressure ring and the pressure ring form elastic contact therebetween; The pressure ring is provided with a stand column distributed in a circumferential direction of the stand, and the stand column is upwardly slidingly penetrated through the limiting ring; The limiting ring is coaxially and slidingly arranged on the stand, the stand is hollow and an oil cylinder is arranged in the stand, an output rod of the oil cylinder extends along the height direction of the stand, a driving ring is arranged on the output rod of the oil cylinder, and the driving ring and the limiting ring are in transmission connection therebetween; The stand is provided with a guide groove distributed in a circumferential direction thereof, the limiting ring is provided with a convex ring coaxial therewith, the convex ring is provided with a connecting bolt distributed in a circumferential direction thereof, the connecting bolt extends in a radial direction of the convex ring, and one end of the connecting bolt is connected with the driving ring after penetrating through the guide groove.

2. The sway-preventing shore-to-container gantry crane spreader device of claim 1, wherein, The inner diameter of the damping ring gradually increases from bottom to top to form a first tapered surface, and the outer side of the pressure ring is in contact with the first tapered surface to form an inclined surface fit.

3. The sway-preventing shore-to-container gantry crane spreader device of claim 1, wherein, The outer diameter of the pressure ring gradually increases from bottom to top to form a second tapered surface, and the inner side of the damping ring is in contact with the second tapered surface to form an inclined surface fit.

4. The sway-preventing shore-to-container gantry crane hoisting spreader device of claim 1, wherein, The inner diameter of the damping ring gradually increases from bottom to top to form a third tapered surface, the outer diameter of the pressure ring gradually increases from bottom to top to form a fourth tapered surface, and the third tapered surface and the fourth tapered surface are in contact to form an inclined surface fit.

5. The sway-preventing shore-to-ship container crane hoisting spreader device of claim 1, wherein, The contact surface of the damping ring and the sling body is provided with a ball, and the damping ring and the sling body form a rolling fit therebetween.

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