Anti-deflection portal crane based on port and method

Abstract

The invention relates to the technical field of cranes, and particularly discloses an anti-deflection portal crane based on a port and a method, the anti-deflection portal crane comprises a portal frame, a moving trolley is arranged on the portal frame, a lifting appliance is arranged at the bottom of the moving trolley, the lifting appliance comprises two sets of rigging, each set of rigging comprises two ropes, and a winding and unwinding device is arranged at the tops of the two ropes; the winding and unwinding device is used for controlling winding and unwinding of the rope; a balancing weight is arranged in the middle of each set of rigging, and the two ropes are fixed through the balancing weights; at least one tightening rope is arranged on one side of each group of rigging; in each set of rigging, the tops of the two ropes and the top of the tightening rope are connected with the top of the moving trolley. According to the invention, a polyhedral frame structure is formed by the tightening ropes and the ropes of the two groups of riggings, so that rigid constraint can be formed, horizontal and vertical swinging of the container in the hoisting and moving process can be effectively counteracted, the smoothness and safety of port operation can be improved, and the risk of collision or damage caused by shaking of goods is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to an anti-swing gantry crane and a method for use in ports. Background Art

[0002] Port gantry cranes (also known as gantry cranes) are large-scale loading and unloading equipment. Their main structure consists of a portal frame (two outriggers and a top main beam) that spans the dock, and a lifting trolley that moves along the main beam. They move on tracks using a running mechanism beneath the outriggers and, in conjunction with lifting equipment (such as container spreaders and grab buckets), efficiently lift cargo between ships and trucks and storage yards. They are particularly well-suited for the rapid turnover of bulk materials such as containers and bulk cargo. Characterized by their large span, high lifting capacity (ranging from tens to thousands of tons), and wide operating coverage, they are a core piece of loading and unloading machinery in modern ports.

[0003] When facing the problem of anti-sway of the sling, the solution that can usually be thought of is to limit the lifting rope to suppress the swing during lifting. For example, the prior art patent announcement number CN222118688U discloses an anti-sway gantry crane. The patent includes a column, the upper surface of the column is fixedly connected to a crossbeam, the surface of the crossbeam is installed with a moving trolley, the front of the moving trolley is installed with a controller, the lower surface of the mounting plate is installed with a multi-stage electric telescopic rod, the telescopic end of the multi-stage electric telescopic rod is fixedly connected to a lifting plate, the surface of the other end of the lifting plate is provided with an anti-sway hole, the wire rope passes through the anti-sway hole, the other end of the second spring is installed with a micro switch, and the inner side of the telescopic block is installed with a trigger block. The patent adopts the arrangement of a reciprocating block, a fixed block, a monitoring device, a multi-stage electric telescopic rod, a lifting plate and an anti-sway hole. As the lifting plate moves downward, the swaying wire rope is forced to be limited, and the swaying wire rope is limited to the anti-sway hole, thereby stopping the shaking cargo, thereby achieving the purpose of automatically preventing sway.

[0004] However, the problem with the existing technology is that the depth of the anti-sway hole is limited, and it is necessary to ensure that it does not affect the normal lifting of the goods. However, if the depth of the anti-sway hole is short, the anti-sway effect is limited. Therefore, using this method to suppress the sway problem will encounter bottlenecks, and it is urgent to solve it. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] The present invention provides an anti-sway gantry crane and method for use in ports, which can solve the problem that existing port cranes are prone to swinging when lifting containers for movement. The specific solution is as follows: In one aspect, the present invention provides an anti-swing gantry crane for use in ports, comprising a gantry, a movable trolley provided on the gantry, a sling provided at the bottom of the movable trolley, the sling comprising two sets of rigging, each set of rigging comprising two ropes, a reeling device provided at the top of the two ropes, the reeling device being used to control the reeling and unreeling of the ropes; A counterweight is set in the middle of each set of rigging to fix the two ropes; At least one taut rope is provided on one side of each set of rigging; In each set of rigging, the tops of the two ropes and the tensioning rope are connected to the top of the mobile trolley, and the bottom ends of the ropes form a tensioned frame structure in the plumb line direction under the action of the gravity of the container; The top of the tension rope controls the tension of the tension rope through a contraction structure; In each set of rigging, a polyhedral tension frame structure is formed by at least one tension rope and two ropes; The present invention forms a polyhedral frame structure through the tensioning ropes and ropes of two sets of rigging, thereby forming a rigid constraint, effectively offsetting the horizontal and vertical swing of the container during the lifting and moving process, thereby improving the smoothness and safety of port operations and avoiding the risk of collision or damage to the cargo due to shaking.

[0007] Preferably, the tensioning ropes on the two sets of rigging are located on the adjacent side of the two sets of rigging, so that each set of rigging forms a trihedral tensioning frame structure through a tensioning rope and two ropes. When the container is lifted by the sling, the two tensioning ropes constrain the two sets of rigging inward.

[0008] Preferably, each rigging group is provided with two tensioning ropes, and the second tensioning rope is provided on a side away from each other of the two rigging groups, so that each rigging group forms a tetrahedral tensioning frame structure through the two tensioning ropes and two ropes.

[0009] Preferably, the counterweights of the two rigging sets are rigidly connected via a telescopic arm, so that after the sling lifts the container, the two rigging sets maintain a fixed distance.

[0010] Preferably, the telescopic arm is used in conjunction with the contraction structure so that at each spacing between the two counterweights, the contraction structure always allows the tensioning rope and the rope to maintain a polyhedral tensioned frame structure; The present invention provides a telescopic arm between the two groups of counterweight blocks, thereby achieving a rigid connection and locking the position, ensuring a constant spacing between the counterweight blocks during the lifting process, eliminating lateral swing caused by spacing changes due to external forces, maintaining the balance and force uniformity of the entire spreader, and improving the reliability of equipment operation; through the contraction structure and the industrial control computer working together, the tightness of the tensioning rope is automatically adjusted under the working conditions of different counterweight block spacings, so that the rope, tensioning rope and polyhedron frame are kept in the optimal tension state under various container sizes, maintaining structural rigidity, effectively suppressing swing, and improving the crane's adaptability to different load environments.

[0011] Preferably, the reeling and winding device includes a reeling roller, which is rotatably installed inside the mobile trolley. A first motor is installed at the rear end of the reeling roller, and the first motor is used to drive the reeling roller to rotate. The two ropes on the two sets of rigging are both passed through the mobile trolley. The two ropes on the two sets of rigging are respectively fixed at the upper and lower ends of the reeling roller, so that when the reeling roller rotates, the ropes on the two sets of rigging can be raised and lowered synchronously, thereby driving the two counterweight blocks to rise and fall synchronously, which is used to control the rise and fall of the container.

[0012] Preferably, the retraction structure includes a winding frame installed at the bottom of the mobile trolley, two first passing rollers are connected to the middle of the winding frame, and the tensioning ropes on the adjacent sides of the two counterweights extend from the first passing roller to the top of the winding frame and are wound through the first retraction roller.

[0013] Preferably, a second passing roller and a second shrinking roller are connected to both ends of the winding frame, and the tension rope on the side where the two counterweights are away from each other extends from the second passing roller to the middle of the winding frame and is wound through the second shrinking roller.

[0014] Preferably, the bottoms of the two counterweights are fixedly connected to a third telescopic rod, and the bottoms of the third telescopic rods are fixedly connected to an extrusion plate. The clamping spacing formed by the two extrusion plates matches the width of the container. After the container is lifted, the spacing between the two counterweights is adjusted so that the two extrusion plates are clamped at the corners of the container at both ends. Then, pressure is applied through the third telescopic rod to squeeze the container downward, thereby tightening the hanging rope. The present invention applies downward pressure on the corners of the container at both ends through the extrusion plate at the bottom of the counterweight block, and cooperates with the tightening of the hanging rope to achieve multi-point force fixation of the container, ensuring that the ropes and tightening ropes are always in a taut state during the lifting process, and minimizing the swaying or displacement of the container during movement.

[0015] In another aspect, the present invention provides a method for anti-swing gantry crane for use in a port, comprising the following steps: S1. Two sets of rigging are set at the bottom of the mobile trolley, each set of rigging includes two ropes and at least one taut rope; S2. Connect the top of the two ropes of each set of rigging to the top of the mobile trolley, and configure independent retractable and retractable devices to control their retraction and extension; S3. Connect the top of at least one tensioning rope in each set of rigging to the top of the mobile trolley and configure an independent retraction structure to control its tension; S4. Install a counterweight in the middle of the two ropes of each rigging set, and use the counterweight to keep the two ropes at a fixed distance from each other; S5. Operate the reeling and unreeling device to release the rope, so that the bottom end of the rope is in a plumb state under the action of the gravity of the suspended container. At this time, the tension rope is also in a tensioned state due to the tension applied by the contraction structure; S6. Each taut rope cooperates with its two adjacent ropes to form a polyhedral taut frame structure consisting of at least three sides in each set of rigging to restrain the horizontal yaw movement of the container.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. Significantly suppress container sway and enhance lifting stability: The present invention forms a polyhedron frame structure through the tensioning ropes and ropes of two sets of rigging, thereby forming a rigid constraint and effectively offsetting the horizontal and vertical swing of the container during lifting and moving, thereby improving the smoothness and safety of port operations and avoiding the risk of collision or damage to the cargo due to shaking.

[0017] 2. Improve the fixity of the lifting system and prevent spacing changes: The present invention sets a telescopic arm between the two sets of counterweights to achieve rigid connection and lock the position, ensuring that the spacing between the counterweights is constant during the lifting process, eliminating lateral swing caused by spacing changes due to external forces, maintaining the balance and force uniformity of the entire sling, and improving the reliability of equipment operation.

[0018] 3. Optimize the safety of anti-falling containers: The present invention sets a limiter and a block on the hook. When the container is lifted, the block rotates to the bottom under the action of gravity, thereby automatically blocking the opening of the lifting lug, preventing the lifting lug from detaching from the hook and preventing accidental falling accidents. The mechanism is self-locking under gravity drive, thereby improving the safety level of port operations.

[0019] 4. Enhance the overall fixing effect of the container: The present invention applies downward pressure to the corners of the container at both ends through the extrusion plate at the bottom of the counterweight block, and cooperates with the tightening of the hanging rope to achieve multi-point force fixation of the container, ensuring that the ropes and tensioning ropes are always in a taut state during the lifting process, minimizing the swaying or displacement of the container during movement.

[0020] 5. Dynamically adjust system tension to adapt to different working conditions: The present invention works in conjunction with the industrial computer through the contraction structure to automatically adjust the tightness of the tensioning rope under working conditions of different counterweight block spacings, so that the rope, tensioning rope and polyhedron frame are kept in the optimal tension state under various container sizes, maintaining structural rigidity, effectively suppressing swing, and improving the crane's adaptability to different load environments.

[0021] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them: Figure 1 This is a first-view stereogram of the present invention; Figure 2 This is a second perspective stereogram of the present invention; Figure 3 This is a perspective view of the present invention without the door frame; Figure 4 This is a three-dimensional diagram of the trihedron tensioned frame structure of the present invention; Figure 5 This is a three-dimensional diagram of the tetrahedron tensioned frame structure of the present invention; Figure 6 An exploded view of two counterweights and a telescopic arm of the present invention; Figure 7 is a three-dimensional diagram of the lanyard of the present invention; Figure 8 It is a partial cross-sectional view of the mobile trolley of the present invention; Figure 9 A half-section view of the mobile trolley of the present invention; Figure 10 A perspective view of a sliding block according to the present invention; Figure 11 A perspective view of the retractable structure and the mobile trolley of the present invention; Figure 12 is a three-dimensional diagram of the contraction structure of the present invention; Figure 13 This is a three-dimensional diagram of the installation of the extrusion plate and the third telescopic rod on the mobile trolley of the present invention; Figure 14 This is a cross-sectional view of the extrusion plate and the third telescopic rod of the present invention on the mobile trolley; Figure 15 It is a three-dimensional diagram of the counterweight block and the extrusion plate of the present invention.

[0023] The accompanying drawings are numerals as follows: 1. Gantry; 2. Moving trolley; 3. Rope; 4. Counterweight; 5. Tension rope; 6. Container; 7. Telescopic arm; 8. Sliding slot; 10. Hanging rope; 11. Hook; 12. Limiter; 13. Block; 14. Lifting lug; 15. Winding roller; 16. First motor; 17. Sliding block; 18. First rack; 19. Second motor; 20. Drive shaft; 21. First gear; 22. Second rack; 23. Second gear; 24. Winding frame; 25. First passing roller; 26. First retracting roller; 27. Second passing roller; 28. Second retracting roller; 29. ​​Third gear; 30. Third rack; 31. First telescopic rod; 32. Worm gear; 33. Worm; 34. Fourth gear; 35. Fourth rack; 37. Extrusion plate; 38. Third telescopic rod. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0025] Example 1: Figure 1 、 Figure 2 、 Figure 3 As shown, this embodiment provides an anti-swing gantry crane for use in ports, including a gantry 1, a moving trolley 2 is provided on the gantry, a sling is provided at the bottom of the moving trolley 2, the sling includes two groups of rigging, each group of rigging includes two ropes 3, and a reeling device is provided on the top of the two ropes 3, which is used to control the retraction and release of the ropes 3; a counterweight block 4 is provided in the middle of each group of rigging, and the counterweight block 4 fixes the two ropes 3.

[0026] like Figure 4 、 Figure 5 As shown, at least one tensioning rope 5 is provided on one side of each set of rigging; in each set of rigging, the tops of the two ropes 3 and the tensioning rope 5 are connected to the top of the moving trolley 2, and the bottom ends of the ropes 3 form a tensioning frame structure in the direction of the plumb line under the action of the gravity of the container.

[0027] The top of the tensioning rope 5 controls the tensioning force of the tensioning rope 5 through the contraction structure.

[0028] like Figure 4 、 Figure 5 As shown, in each set of rigging, at least one tension rope 5 and two ropes 3 form a polyhedron tension frame structure (such as Figure 4 、 Figure 5In order to effectively reduce the swing of the rigging, the tension rope 5 is flat and has a large width, thereby effectively suppressing the swing in the vertical direction.

[0029] like Figure 4 As shown, in a possible embodiment, the tension ropes 5 on the two rigging groups are both located on the adjacent side of the two rigging groups, so that each rigging group is composed of a tension rope 5 and two ropes 3 to form a trihedral tension frame structure (such as Figure 4 When the container 6 is lifted by the sling, the two tension ropes 5 constrain the two rigging groups inwards, as shown in the dotted frame structure. Figure 3 As shown, through the tightening effect of the tensioning rope 5, the stretching effect of the rope 3, and the gravity of the container 6, the two sets of rigging can form a fixation in the vertical direction to suppress the swing of the container 6.

[0030] like Figure 5 As shown, in another possible embodiment, each rigging set is provided with two tensioning ropes 5, and the second tensioning rope 5 is provided on the side away from each other of the two rigging sets, so that each rigging set is formed into a tetrahedral tensioning frame structure (such as Figure 5 dotted frame structure shown).

[0031] like Figure 6 As shown, in a possible embodiment, the counterweights 4 of the two rigging groups are rigidly connected via a telescopic arm 7, so that after the sling lifts the container 6, the two rigging groups maintain a fixed distance and the distance does not change.

[0032] In the above scheme, the specific setting is: a telescopic arm 7 is provided on one side adjacent to the two counterweight blocks 4, the two telescopic arms 7 are staggered, a sliding groove 8 is opened in the middle of the two counterweight blocks 4, the two telescopic arms 7 are respectively slidably connected to their corresponding sliding grooves 8, and the adjacent side of the two telescopic arms 7 is locked by a locking structure.

[0033] like Figure 7 As shown, in a possible embodiment, both ends of the two counterweights 4 are connected with a hanging rope 10, which is made of multiple strands of metal wire. The bottom end of the hanging rope 10 is fixedly connected with a hook 11, and the hook 11 is suspended on a lifting lug 14 on the container 6. A limiter 12 is rotatably installed on the upper part of the hook 11, and the limiter 12 is rotatably connected to the upper part of the hook 11. A stopper 13 is provided at the bottom end of the limiter 12. Under the action of gravity, the stopper 13 is located below the limiter 12, thereby blocking the opening of the hook 11, preventing the lifting lug 14 from separating from the hook 11, and preventing the container 6 from falling off and causing an accident.

[0034] like Figure 8 、 Figure 9As shown, in a possible embodiment, the reeling and winding device includes a reeling roller 15, which is rotatably installed inside the mobile trolley 2, and a first motor 16 is installed at the rear end of the reeling roller 15. The first motor 16 is used to drive the reeling roller 15 to rotate, and the two ropes 3 on the two sets of rigging are both passed through the mobile trolley 2. The two ropes 3 on the two sets of rigging are respectively fixed at the upper and lower ends of the reeling roller 15, so that when the reeling roller 15 rotates, the ropes 3 on the two sets of rigging can be raised and lowered synchronously, thereby driving the two counterweights 4 to rise and fall synchronously, which is used to control the rise and fall of the container 6.

[0035] Continue reading Figure 9 Two sliding blocks 17 are slidably installed at the bottom of the mobile trolley 2. Through holes are opened at the front and rear ends of the two sliding blocks 17, so that the rope 3 can pass through the through holes to the bottom of the sliding block 17 and connect with the counterweight block 4.

[0036] like Figure 10 As shown, in a possible embodiment, adjacent ends of the two sliding blocks 17 are respectively fixedly connected to the first racks 18, and the teeth of the two first racks 18 are located on the adjacent side. A second motor 19 is fixedly installed inside the mobile cart 2, and the bottom output end of the second motor 19 is fixedly connected to the drive shaft 20, and the top of the drive shaft 20 is fixedly connected to the first gear 21. The first gear 21 is respectively engaged with the two first racks 18, and the first gear 21 is driven to rotate by the second motor 19, and the first gear 21 drives the two first racks 18 to move, thereby allowing the two sliding blocks 17 to approach or move away from each other.

[0037] Continue reading Figure 10 A second rack 22 is connected to the adjacent side of the two telescopic arms 7, and a second gear 23 is fixedly connected to the bottom of the drive shaft 20. The second gear is engaged with the two second racks 22, so that when the second gear 23 rotates with the drive shaft 20, the second gear 23 can drive the two second racks 22 to move relative to each other, so that the two counterweights 4 can move away from or approach each other.

[0038] like Figure 11 As shown, in a possible embodiment, the contraction structure includes a winding frame 24 installed at the bottom of the mobile trolley 2, two first passing rollers 25 are connected to the middle of the winding frame 24, and the tensioning rope 5 on the adjacent side of the two counterweights 4 extends from the first passing roller 25 to the top of the winding frame 24 and is wound through the first contraction roller 26.

[0039] Continue reading Figure 11 In another possible embodiment, a second passing roller 27 and a second shrinking roller 28 are connected to both ends of the winding frame 24, and the tensioning rope 5 on the side where the two counterweights 4 are away from each other extends from the second passing roller 27 to the middle of the winding frame 24 and is wound through the second shrinking roller 28.

[0040] like Figure 12 As shown, as a specific scheme of the above two embodiments, the rear ends of the two first retraction rollers 26 are connected to the third gear 29, and a third rack 30 is arranged between the two third gears 29. The teeth on both sides of the third rack 30 are engaged with the third gear 29, and the bottom of the third rack 30 is connected to the first telescopic rod 31. The movement of the third rack 30 is controlled by the first telescopic rod 31, thereby driving the two third gears 29 to rotate, so that the first retraction roller 26 rotates to reel in or unreel one of the tensioning ropes 5.

[0041] Continue reading Figure 12 The rear ends of the two second shrinking rollers 28 are connected to a worm gear 32, and a worm 33 is provided below the two worm gears 32. The worm 33 is bidirectionally arranged and meshes with the two worm gears 32. When the worm 33 rotates, it can drive the two worm gears 32 to rotate in opposite directions, so that the other two tensioning ropes 5 can be reeled or unreeled synchronously. A fourth gear 34 is fixed to the middle of the worm 33, and a fourth rack 35 is meshed with one side of the fourth gear 34. The top of the fourth rack 35 is controlled by a second telescopic rod 36.

[0042] In the above scheme, through the centralized control of the industrial computer, the telescopic arm 7 can be used in conjunction with the retraction structure, so that the two counterweight blocks 4 are at various spacings, and the retraction structure always allows the tensioning rope 5 and the rope 3 to maintain a polyhedral tensioning frame structure, providing multi-directional tension for the counterweight block 4, so that it remains stable after lifting the container 6, further suppressing swinging.

[0043] like Figure 13 、 Figure 14 、 Figure 15 As shown, in a possible embodiment, the bottoms of the two counterweights 4 are fixedly connected to a third telescopic rod 38, and the bottoms of the third telescopic rod 38 are fixedly connected to an extrusion plate 37. The clamping spacing formed by the two extrusion plates 37 matches the width of the container 6. After lifting the container 6, by adjusting the spacing between the two counterweights 4, the two extrusion plates 37 are clamped at the corners at both ends of the container 6, and then pressure is applied through the third telescopic rod 38 to squeeze the container 6 downward, thereby tightening the hanging rope 10 and fixing the container 6. In this way, during the entire lifting process, the rope 3, the tensioning rope 5 and the hanging rope 10 are all kept in a taut state, effectively avoiding the swinging of the container 6 during the movement.

[0044] Embodiment 2: This embodiment differs from the embodiment 1 in that it provides a port-based anti-swing gantry crane method, comprising the following steps: S1. Hoisting initialization: The reeling device reels in and out the rope 3, driving the counterweight 4 to rise and fall; the container 6 is hung on the hook 11, and the limiter 12 automatically rotates under gravity, causing the block 13 to block the opening of the hook 11 to prevent the lifting lug 14 from being unhooked.

[0045] S2. Swing suppression mechanism: The tension rope 5 adjusts its tension through a contraction structure, forming a polyhedral tension frame with the rope 3 (the tension ropes 5 on adjacent sides form a trihedron frame, or the tension ropes 5 on both sides are expanded into a tetrahedron). The frame rigidly constrains the container 6 to suppress vertical / horizontal swing; the telescopic arm 7 connects the two sets of counterweights 4, and the spacing is fixed by the sliding groove 8 and locking structure to prevent deviation; the drive shaft 20 is linked to the first rack 18 through the first gear 21, controlling the lateral movement of the sliding block 17 to adjust the spacing of the counterweights 4.

[0046] S3. Dynamic adjustment and tightening: The industrial computer coordinates control: the third rack 30 drives the third gear 29 to adjust the tension of the adjacent tensioning ropes 5; the worm 33 drives the worm wheel 32 to synchronously adjust the outer tensioning ropes 5; the third telescopic rod 38 at the bottom of the counterweight block 4 pushes down the extrusion plate 37, clamping the corners at both ends of the container 6, increasing the tension of the hanging rope 10 and achieving multi-point fixation.

[0047] Power coordination and safety control: The second motor 19 drives the drive shaft 20, which drives the second gear 23 to link with the second rack 22 to control the extension and retraction of the telescopic arm 7; the tension of the tightening rope 5, the rope 3, and the hanging rope 10 is maintained throughout the process to ensure that the container 6 is stable and swing-free during the entire process of lifting, translation, and falling.

[0048] In summary, the present invention forms a polyhedron frame structure through the tensioning ropes 5 and ropes 3 of two sets of rigging, thereby forming a rigid constraint, effectively offsetting the horizontal and vertical swing of the container 6 during the lifting and moving process, thereby improving the smoothness and safety of port operations and avoiding the risk of collision or damage of goods due to shaking; the present invention arranges a telescopic arm between the two sets of counterweight blocks 4, thereby achieving a rigid connection and locking the position, ensuring that the spacing between the counterweight blocks 4 is constant during the lifting process, eliminating the lateral swing caused by the change in spacing due to external force, maintaining the balance and force uniformity of the entire sling, and improving the reliability of equipment operation; the present invention arranges a limiter and a block on the hook, so that when the container 6 is lifted, the block rotates to the bottom under the action of gravity, thereby automatically locking. The opening of the lifting ear is blocked to prevent the lifting ear from being separated from the hook and preventing accidental falling accidents. The mechanism is self-locking under gravity drive, which improves the safety level of port operations. The present invention applies downward pressure on the corners of the container 6 at both ends through the extrusion plate at the bottom of the counterweight block 4, and cooperates with the tightening of the hanging rope to achieve multi-point force fixation of the container 6, ensuring that the rope 3 and the tightening rope 5 are always in a tightened state during the lifting process, minimizing the swing or displacement of the container 6 during movement. The present invention cooperates with the industrial control computer through the contraction structure to automatically adjust the tightness of the tightening rope 5 under the working conditions of different counterweight block 4 spacings, so that the rope 3, the tightening rope 5 and the polyhedron frame maintain the best tightening state under various container 6 sizes, maintain structural rigidity, effectively suppress swing, and improve the crane's adaptability to different load environments.

[0049] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0050] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] Parallel: The parallel defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, allowing for situations where the two sides are not absolutely parallel due to factors such as assembly tolerance, design tolerance, and the influence of structural flatness. Small angle errors are allowed. For example, within an assembly error range of 10 degrees, it can be understood as a parallel relationship.

[0052] Vertical: The vertical defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and structural flatness. It allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0053] The term "plurality" in this document refers to two or more. The term "and / or" in this document simply describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0054] In the embodiments of the present application, any device or element referred to or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise specifically specified.

[0055] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-swing gantry crane for port use, comprising a gantry, a movable trolley disposed on the gantry, and a sling disposed at the bottom of the movable trolley, characterized in that: The sling includes two sets of rigging, each set of rigging includes two ropes, and the tops of the two ropes are provided with a reeling device for controlling the reeling and unreeling of the ropes; A counterweight is set in the middle of each set of rigging to fix the two ropes; At least one taut rope is provided on one side of each set of rigging; In each set of rigging, the tops of the two ropes and the tensioning rope are connected to the top of the mobile trolley, and the bottom ends of the ropes form a tensioned frame structure in the plumb line direction under the action of the gravity of the container; The top of the tension rope controls the tension of the tension rope through a contraction structure; In each set of rigging, a polyhedral tension frame structure is formed by at least one tension rope and two ropes.

2. The anti-swing gantry crane for port use according to claim 1, characterized in that: The tensioning ropes on the two sets of rigging are located on the adjacent side of the two sets of rigging, so that each set of rigging forms a trihedral tensioning frame structure through a tensioning rope and two ropes. When the container is lifted by the spreader, the two tensioning ropes constrain the two sets of rigging inward.

3. The anti-swing gantry crane for port use according to claim 2, characterized in that: Each rigging set is provided with two tensioning ropes, and the second tensioning rope is provided on the side away from each other of the two rigging sets, so that each rigging set forms a tetrahedron tensioning frame structure through the two tensioning ropes and two ropes.

4. The anti-swing gantry crane for port use according to claim 1, characterized in that: The counterweights of the two sets of rigging are rigidly connected by a telescopic arm, so that after the spreader lifts the container, the two sets of rigging maintain a fixed distance.

5. The anti-swing gantry crane for port use according to claim 4, characterized in that: The telescopic arm is used in conjunction with the retractable structure to enable the two counterweights to be at various intervals, and the retractable structure always allows the tensioning ropes and the ropes to maintain the polyhedral tensioned frame structure.

6. The anti-swing gantry crane for port use according to claim 1, characterized in that: The reeling and winding device includes a reeling roller, which is rotatably installed inside the mobile trolley. A first motor is installed at the rear end of the reeling roller, which is used to drive the reeling roller to rotate. The two ropes on the two sets of rigging are both passed through the mobile trolley. The two ropes on the two sets of rigging are respectively fixed at the upper and lower ends of the reeling roller, so that when the reeling roller rotates, the ropes on the two sets of rigging can rise and fall synchronously, thereby driving the two counterweight blocks to rise and fall synchronously, which is used to control the rise and fall of the container.

7. The anti-sway gantry crane for port use according to claim 2, characterized in that: The contraction structure includes a winding frame installed at the bottom of the mobile trolley, with two first passing rollers connected to the middle of the winding frame. The tension ropes on the adjacent sides of the two counterweights extend from the first passing rollers to the top of the winding frame and are wound through the first contraction roller.

8. The anti-swing gantry crane for port use according to claim 7, characterized in that: The two ends of the winding frame are connected with a second passing roller and a second shrinking roller. The tension rope on the side where the two counterweights are away from each other extends from the second passing roller to the middle of the winding frame and is wound through the second shrinking roller.

9. The anti-swing gantry crane for port use according to claim 1, characterized in that: The bottom of the two counterweights are fixedly connected to a third telescopic rod, and the bottom of the third telescopic rod is fixedly connected to an extrusion plate. The clamping spacing formed by the two extrusion plates matches the width of the container. After lifting the container, the spacing between the two counterweights is adjusted to clamp the two extrusion plates at the corners at both ends of the container, and then pressure is applied through the third telescopic rod to squeeze the container downward, thereby tightening the hanging rope.

10. A method for anti-swing gantry crane for port use, using the anti-swing gantry crane for port use according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Two sets of rigging are set at the bottom of the mobile trolley, each set of rigging includes two ropes and at least one taut rope; S2. Connect the top of the two ropes of each set of rigging to the top of the mobile trolley, and configure independent retractable and retractable devices to control their retraction and extension; S3. Connect the top of at least one tensioning rope in each set of rigging to the top of the mobile trolley and configure an independent retraction structure to control its tension; S4. A counterweight is placed in the middle of the two ropes of each rigging set, and the two ropes are kept at a fixed distance from each other by the counterweight; S5. Operate the reeling device to release the rope, so that the bottom end of the rope is in a plumb state under the action of the gravity of the suspended container. At this time, the tension rope is also in a tensioned state due to the tension applied by the contraction structure; S6. Each taut rope cooperates with its two adjacent ropes to form a polyhedral taut frame structure consisting of at least three sides in each set of rigging to restrain the horizontal yaw movement of the container.

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