Anti-overturning hoisting device

Abstract

This invention discloses an anti-tipping hoisting device, belonging to the field of hoisting technology. It includes a base installed on the hull, a tower mounted on the base via a rotary reducer, a boom mounted on one side of the tower, and a wire rope connected to both the tower and boom via a pulley system. A hook is mounted on the wire rope, and a winch unit for winding and unwinding the wire rope is installed on the other side of the tower. Through the arrangement of a holding unit and a dual-rope anti-sway unit, it achieves both anti-tipping and anti-sway effects, adapting to shipboard swaying conditions. The sliding cooperation between the side guide frame and the holding rod physically limits the load, restricting large-scale forward and backward and left and right swaying of the load, preventing the load's center of gravity from shifting outward and amplifying the overturning moment. Simultaneously, the anti-sway ring and control rope work together to generate a restoring torque using the tension difference, suppressing slight swaying of the load and weakening the coupling resonance between the ship's swaying and the load's swaying. This dual anti-sway structure significantly improves the overall dynamic stability of the device, fundamentally reducing the risk of overturning.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, and more particularly to an anti-tipping hoisting device. Background Technology

[0002] Marine cantilever cranes are core equipment for cargo transfer and equipment hoisting on ships. Their stability and anti-overturning ability directly affect operational safety and efficiency. Ships are affected by waves and wind, resulting in rolling and pitching movements, which bring core technical challenges to hoisting operations.

[0003] Existing marine cantilever cranes rely solely on counterweights and torque limiters to ensure stability, which has limited ability to suppress dynamic overturning caused by load swaying. Load swaying can lead to a shift in the center of gravity, generate additional overturning moments, reduce positioning accuracy, amplify the risk of overturning, and even cause equipment damage. Summary of the Invention

[0004] The purpose of this invention is to provide an anti-tipping hoisting device to address the problems that swinging of the suspended load can cause a shift in the center of gravity, generate additional overturning moment, reduce positioning accuracy, and amplify the risk of overturning.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An anti-tipping hoisting device includes a base installed on a ship's hull, a tower mounted on the base via a rotary reducer, a boom mounted on one side of the tower, a wire rope mounted on both the tower and the boom via a pulley system, a hook mounted on the wire rope, a winch unit for winding and unwinding the wire rope mounted on the other side of the tower, a counterweight mounted at the bottom of the other side of the tower, a positioning frame mounted on one side of the ship's hull, and a holding unit mounted on one side of the positioning frame. The holding unit includes two rotating parts that are hinged to the positioning frame. One end of each of the two rotating parts is fixed to a side guide frame. The hook is slidably mounted on the side guide frame to keep it vertically rising during hoisting, and works with the side guide frame to limit the swing amplitude of the suspended weight.

[0006] As a further description of the above technical solution: A transverse sliding groove is provided on the top of one side of the side guide frame, and a vertical sliding groove connected to the transverse sliding groove is provided in the middle of one side of the side guide frame. A spherical slider that is adapted to the transverse sliding groove and the vertical sliding groove is fixed at one end of the retaining rod.

[0007] As a further description of the above technical solution: The hook has a fixed base at the middle of both sides, and the other end of the retaining rod is threaded into the fixed base.

[0008] As a further description of the above technical solution: The rotating component includes a first connecting plate that is rotatably connected to the positioning frame via a hinge. A ball joint is rotatably connected to the first connecting plate through a ball groove. A second connecting plate is installed at one end of the ball joint and fixed to the side guide frame on one side. Positioning bolts are threaded through the upper surfaces of both the first and second connecting plates.

[0009] As a further description of the above technical solution: An auxiliary plate is fixed to the outer wall of the positioning frame, and fastening bolts are threaded through the auxiliary plate.

[0010] As a further description of the above technical solution: Both side guide frames are equipped with a dual-rope anti-sway unit. The dual-rope anti-sway unit includes a limiting rope inserted into the side guide frame. One end of each of the four limiting ropes is connected to an anti-sway ring. Control ropes are fixed to the middle of both sides of the anti-sway ring.

[0011] As a further description of the above technical solution: A winding assembly is installed on the other side of the positioning frame. The winding assembly includes a mounting frame installed on the positioning frame. A drum is rotatably connected inside the mounting frame. A first motor with its output end connected to the drum is installed on one side of the mounting frame. A guide frame is installed on the top of the mounting frame, and a threaded rod is rotatably connected inside the guide frame. A rope-laying rod with its bottom end slidably connected to the bottom wall of the guide frame is threaded onto the threaded rod. A second motor with its output end connected to the threaded rod is installed on the outer wall of the guide frame. The hoisting unit has the same structure as the winding and unwinding assembly.

[0012] As a further description of the above technical solution: The top of the side guide frame and the bottom of the retaining rod are both equipped with pulleys, and one end of the control rope is connected to the drum after passing through the pulleys and the rope guide rod.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: By setting up the holding unit and the double-rope anti-sway unit, the system achieves both anti-tipping and anti-sway effects, adapting to marine swaying conditions. Through the sliding cooperation between the side guide frame and the holding rod, the load is physically limited, restricting large swings of the load forward and backward and left and right, and preventing the load's center of gravity from shifting outward and amplifying the overturning moment. At the same time, the anti-sway ring and the control rope work together to generate a restoring moment by using the tension difference, suppressing slight swings of the load, and weakening the coupling resonance between the ship's sway and the load's swing. The dual anti-sway structure greatly improves the dynamic stability of the whole machine and reduces the risk of overturning from the root. Meanwhile, the rotating component can drive the side guide frame to rotate flexibly, realizing the unfolding and storage, and adapting to the entire hoisting process; the retaining rod and the fixed seats on both sides of the hook are threadedly connected, the pulley is detachable, and the limiting rope is fixed by the insertion block and the slot of the side guide frame, which is convenient to disassemble and assemble, and can be flexibly used for lifting, slewing and unloading operations. Attached Figure Description

[0014] Figure 1 A schematic diagram of the usage state provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the anti-slip ring after installation according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the structure of the retaining rod provided according to an embodiment of the present invention is shown; Figure 4 This diagram illustrates the state of the side guide frame position adjustment according to an embodiment of the present invention. Figure 5 A schematic diagram of the side guide frame after it is fixed according to an embodiment of the present invention is shown; Figure 6 A schematic diagram from a first perspective is shown when the dual-rope anti-swing unit provided according to an embodiment of the present invention is in use; Figure 7 A schematic diagram of the structure of the roll-up assembly provided according to an embodiment of the present invention is shown; Figure 8 A second-view schematic diagram of the dual-rope sway reduction unit provided according to an embodiment of the present invention is shown in use; Figure 9 A schematic diagram of the anti-slip ring provided according to an embodiment of the present invention is shown; Figure 10 The present invention provides an embodiment of the invention. Figure 5 Enlarged view of point A in the middle; Figure 11 A schematic diagram of the non-use state provided according to an embodiment of the present invention is shown.

[0015] Legend: 10. Base; 11. Tower; 12. Boom; 13. Wire rope; 14. Hook; 15. Winching unit; 16. Counterweight; 17. Positioning frame; 18. Auxiliary plate; 20. Holding unit; 21. Side guide frame; 22. Transverse slide rail; 23. Vertical slide rail; 24. Rotating component; 241. First connecting plate; 242. Ball joint; 243. Second connecting plate; 244. Positioning bolt; 25. Holding rod; 26. Fixed seat; 30. Double rope anti-sway unit; 31. Restriction rope; 32. Anti-sway ring; 33. Control rope; 34. Winding assembly; 341. Mounting frame; 342. Drum; 343. First motor; 344. Threaded rod; 345. Rope guide rod; 346. Second motor; 35. Pulley. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] like Figure 1 - Figure 11 As shown, the present invention provides: An anti-tipping hoisting device includes a base 10 installed on the hull, a tower 11 mounted on the base 10 via a rotary reducer. In particular, the rotary reducer is a full-circumference rotary reduction transmission mechanism that integrates a drive power source. It uses a slewing bearing as the transmission driven component and the attachment component of the mechanism. This is a known technology, and the specific structure will not be described in detail here. A boom 12 is installed on one side of the tower 11. A wire rope 13 is mounted on both the tower 11 and the boom 12 via a pulley block. A hook 14 is mounted on the wire rope 13. A winch unit 15 for winding and unwinding the wire rope 13 is installed on the other side of the tower 11, and a counterweight 16 is mounted at the bottom of the other side of the tower 11. like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 10 and Figure 11 As shown, a positioning frame 17 is installed on one side of the hull, and a retaining unit 20 is installed on one side of the positioning frame 17. The retaining unit 20 includes two rotating parts 24 that are hinged to the positioning frame 17. A side guide frame 21 is fixed to one end of each of the two rotating parts 24. The rotating component 24 includes a first connecting plate 241 that is rotatably connected to the positioning frame 17 via a hinge. A ball joint 242 is rotatably connected to the first connecting plate 241 through a ball groove. A second connecting plate 243 that is fixed to the side guide frame 21 is installed at one end of the ball joint 242. Positioning bolts 244 are threaded through the upper surfaces of the first connecting plate 241 and the second connecting plate 243. Specifically, in the initial state, the side guide frame 21 is tilted and laid flat on the hull, and the retaining rod 25 is not connected to the hook 14, such as Figure 11As shown, when hoisting is required, first rotate the side guide frame 21 upwards until its long side is parallel to the surface of the positioning frame 17, then drive the side guide frame 21 to rotate 90°, and then rotate the side guide frame 21 outwards so that its long side becomes vertical. At this time, the side guide frame 21 is located outside the hull, as shown. Figure 1 As shown, in this state, both the first connecting plate 241 and the second connecting plate 243 are in contact with the top of the positioning frame 17. At this time, tighten the positioning bolt 244 to fix the connecting plate on the positioning frame 17, and then the hoisting operation can be carried out.

[0018] An auxiliary plate 18 is fixed on the outer wall of the positioning frame 17. A fastening bolt is threaded through the auxiliary plate 18. In particular, the side guide frame 21 has screw holes corresponding to the fastening bolts. When the side guide frame 21 is rotated to the outside of the hull, the side guide frame 21 will be between the two auxiliary plates 18. At this time, tighten the fastening bolts to fix the side guide frame 21 between the two auxiliary plates 18. like Figure 2 and Figure 3 As shown, the hook 14 is slidably mounted on the side guide frame 21 via the retaining rod 25 to keep it vertically rising during hoisting, and works with the side guide frame 21 to limit the swing amplitude of the hoisted load; A transverse slide groove 22 is provided on the top of one side of the side guide frame 21, and a vertical slide groove 23 connected to the transverse slide groove 22 is provided in the middle of one side of the side guide frame 21. One end of the retaining rod 25 is fixed with a spherical slider that is compatible with the transverse slide groove 22 and the vertical slide groove 23. In particular, the transverse slide groove 22 passes through the side of the side guide frame 21 near the hull. This design is to allow the retaining rod 25 to slide into the transverse slide groove 22 and then into the vertical slide groove 23, so that the hook 14 connected to it can slide up and down in the vertical slide groove 23 without swinging significantly due to wind. The vertical slide groove 23 passes through the top of the side guide frame 21, so that the hook 14 can move upward with the retaining rod 25 to detach from the side guide frame 21, so that the bottom of the load can be higher than the top of the side guide frame 21. Both sides of the hook 14 are fixed with a fixed seat 26 in the middle. The other end of the retaining rod 25 is threaded into the fixed seat 26. Specifically, when in use, after the side guide frame 21 is rotated to the outside of the hull, the two retaining rods 25 are connected to the fixed seats 26 on both sides of the hook 14. Then, the retaining rod 25 is aligned with the transverse slide groove 22 and installed on the side guide frame 21. Then, the retaining rod 25 is pushed (manual push rod is required to push the retaining rod 25 to move) so that it slides into the vertical slide groove 23. At this time, the hook 14 can only move up and down along the vertical slide groove 23, limiting its large swing back and forth and left and right. Through the physical limit of the guide frame, the load is prevented from shifting outward and the overturning moment is amplified. In particular, there is a gap between the spherical slider and the inner wall of the vertical slide groove 23, so that the spherical slider can have a certain range of movement in the vertical slide groove 23 to avoid jamming. After the hoisted load moves upward until the retaining rod 25 is disengaged from the vertical slide 23, the boom 12 is driven by the rotary reducer to rotate the load onto the hull (before rotation, the restraining rope 31 on one of the side guide frames 21 must be removed), and then the load is placed on the hull for unloading.

[0019] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, a double-rope anti-sway unit 30 is mounted on both side guide frames 21. The double-rope anti-sway unit 30 includes a limiting rope 31 inserted into the side guide frame 21. Two slots are opened on the top of one side of the side guide frame 21. The top of the limiting rope 31 is fixed with a plug that matches the slot. The outer wall and one side wall of the side guide frame 21 are threaded with fixing bolts. The middle of the plug is opened with a threaded hole that matches the fixing bolt. After one end of the limiting rope 31 is inserted into the slot through the plug, the fixing bolt is tightened to fix the plug in the slot, thereby fixing the position of the limiting rope 31. One end of the four limiting ropes 31 is connected to an anti-sway ring 32. Preferably, the anti-sway ring 32 is a steel rope ring. In particular, the anti-sway ring 32 can also be a rigid ring. At the same time, the size of the anti-sway ring 32 is larger than the size of the load. Control ropes 33 are fixed in the middle of both sides of the anti-sway ring 32. On the other side of the positioning frame 17, a winding and unwinding assembly 34 is installed. The winding and unwinding assembly 34 includes a mounting frame 341 mounted on the positioning frame 17. A drum 342 is rotatably connected inside the mounting frame 341. A first motor 343 with its output end connected to the drum 342 is installed on one side of the mounting frame 341. A guide frame is installed on the top of the mounting frame 341. A threaded rod 344 is rotatably connected inside the guide frame. A rope-laying rod 345 with its bottom end slidably connected to the bottom wall of the guide frame is threaded on the threaded rod 344. A second motor 346 with its output end connected to the threaded rod 344 is installed on the outer wall of the guide frame. The hoisting unit 15 has the same structure as the winding and unwinding assembly 34.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, pulleys 35 are installed on the top of the side guide frame 21 and the bottom of the retaining rod 25. One end of the control rope 33 is connected to the drum 342 after passing through the pulley 35 and the rope guide rod 345. In particular, the pulley 35 installed on the retaining rod 25 is installed by bolts and can be disassembled. At the same time, a rotating ring is rotatably connected to the part of the outer surface of the retaining rod 25 that contacts the control rope 33 to avoid direct contact between the control rope 33 and the outer wall of the retaining rod 25. At the same time, in the initial state, since the two side guide frames 21 are laid flat in the hull, the restraining rope 31 inserted on one side guide frame 21 needs to be removed. At the same time, the pulley 35 on the retaining rod 25 is not installed, but the pulley 35 is on the control rope 33 on the corresponding side. When the length of the control rope 33 on the same side is greater than that on the other side, the anti-sway ring 32 can be placed on one side. When hoisting is required, after the side guide frame 21 is rotated upwards until its long side is parallel to the surface of the positioning frame 17 and rotated 90°, the removed restraining rope 31 is inserted into the corresponding side guide frame 21 and fixed. Then, the retaining rod 25 is installed on both sides of the hook 14, and then the removed pulley 35 is reinstalled on the retaining rod 25 (the removed pulley 35 does not remove the control rope 33 from it). At this time, the side guide frame 21 is rotated to the outside of the hull and fixed. Then, the retaining rod 25 is aligned with the transverse slide groove 22 and gradually pushed into the vertical slide groove 23. At this time, the anti-sway ring 32 is below the retaining rod 25. This state is as follows. Figure 2 As shown; At the same time, when the load is hung on the hook 14 and is within the anti-sway ring 32 (such as... Figure 1 As shown, the hoisting unit 15 is activated to wind up the wire rope 13, causing the hook 14 to move the load upward along the vertical chute 23. During this process, two first motors 343 are activated simultaneously to control the drum 342 to rotate and wind up the two control ropes 33. This allows the anti-sway ring 32 to follow the load's ascent and move upward. Simultaneously, during the load's ascent, if the load exhibits slight left-right sway, the anti-sway ring 32 moves to the opposite side of the sway by controlling the different degrees of winding and unwinding of the two control ropes 33. The tension difference generates a restoring torque, suppressing the load's sway amplitude and reducing dynamic inertial force and additional overturning moment. This, combined with the side guide frame 21, limits the load's large sway and prevents overturning. This significantly reduces the dynamic additional overturning moment caused by the load's sway, avoiding overturning and improving the overall stability of the hoisting device under ship swaying conditions.

[0021] Specifically, this anti-tipping hoisting device operates / is used as follows: 1. Initial preparation: The side guide frame 21 is laid flat on the hull, the retaining rod 25 is not connected to the hook 14, the one-sided limiting rope 31 is removed, the pulley 35 is not installed, the control rope 33 of the winding assembly 34 is loosened, and the anti-sway ring 32 is placed on one side; 2. Fixing the side guide frame 21: Rotate the side guide frame 21 to a vertical position on the outside of the hull, tighten the positioning bolts 244 of the rotating part 24 and the fastening bolts of the auxiliary plate 18 to complete the fixing of the side guide frame 21; 3. Assembly of the anti-sway mechanism: Fix the limiting rope 31, connect the holding rod 25 to the fixed seat 26 of the hook 14, install the pulley 35, and pass the control rope 33 through the pulley 35 and the rope guide rod 345 and connect it to the drum 342; 4. Lifting operation: Hang the load on the hook 14 and place it in the anti-sway ring 32, push the retaining rod 25 to slide into the vertical slide groove 23; start the winch unit 15 and the winding and unwinding assembly 34 to simultaneously complete the lifting and lowering of the load and anti-sway, and adjust the control rope 33 to straighten the load when swinging. 5. Unloading operation: After the load is raised to the point where the retaining rod 25 is disengaged from the vertical slide 23, remove the limiting rope 31 on one side; drive the load to the hull through the rotary reducer, and loosen the wire rope 13 to complete the unloading. 6. Storage and Operation: Remove pulley 35, retaining rod 25 and limiting rope 31, loosen bolts, and place side guide frame 21 flat on the hull to complete storage.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An anti-tipping hoisting device, comprising a base (10) installed on a ship's hull, a tower (11) mounted on the base (10) via a rotary reducer, a boom (12) mounted on one side of the tower (11), a wire rope (13) mounted on the tower (11) and the boom (12) via a pulley block, a hook (14) mounted on the wire rope (13), a winch unit (15) for winding and unwinding the wire rope (13) mounted on the other side of the tower (11), and a counterweight (16) mounted at the bottom of the other side of the tower (11), characterized in that, A positioning frame (17) is installed on one side of the hull, and a holding unit (20) is installed on one side of the positioning frame (17). The holding unit (20) includes two rotating parts (24) that are hinged to the positioning frame (17). One end of each of the two rotating parts (24) is fixed to a side guide frame (21). The hook (14) is slidably mounted on the side guide frame (21) to keep it vertically rising during hoisting, and works with the side guide frame (21) to limit the swing amplitude of the hoisting load.

2. The anti-tipping hoisting device according to claim 1, characterized in that, A transverse slide groove (22) is provided on the top of one side of the side guide frame (21), and a vertical slide groove (23) connected to the transverse slide groove (22) is provided in the middle of one side of the side guide frame (21). A spherical slider that is compatible with the transverse slide groove (22) and the vertical slide groove (23) is fixed at one end of the retaining rod (25).

3. The anti-tipping hoisting device according to claim 2, characterized in that, The hook (14) is fixed with a fixing seat (26) at the middle of both sides, and the other end of the retaining rod (25) is threaded into the fixing seat (26).

4. The anti-tipping hoisting device according to claim 3, characterized in that, The rotating component (24) includes a first connecting plate (241) that is rotatably connected to the positioning frame (17) via a hinge. A ball joint (242) is rotatably connected to the first connecting plate (241) by means of a ball groove. A second connecting plate (243) is installed at one end of the ball joint (242) and fixed to the side guide frame (21) on one side. The upper surfaces of the first connecting plate (241) and the second connecting plate (243) are threaded with positioning bolts (244).

5. The anti-tipping hoisting device according to claim 1, characterized in that, An auxiliary plate (18) is fixed on the outer wall of the positioning frame (17), and a fastening bolt is threaded through the auxiliary plate (18).

6. The anti-tipping hoisting device according to claim 1, characterized in that, Two side guide frames (21) are equipped with a double rope anti-sway unit (30). The double rope anti-sway unit (30) includes a restraining rope (31) inserted into the side guide frame (21). One end of the four restraining ropes (31) is connected to an anti-sway ring (32). Control ropes (33) are fixed in the middle of both sides of the anti-sway ring (32).

7. The anti-tipping hoisting device according to claim 6, characterized in that, On the other side of the positioning frame (17), a winding assembly (34) is installed. The winding assembly (34) includes a mounting frame (341) mounted on the positioning frame (17). A drum (342) is rotatably connected inside the mounting frame (341). A first motor (343) with its output end connected to the drum (342) is installed on one side of the mounting frame (341). The top of the mounting frame (341) is equipped with a guide frame, and a threaded rod (344) is rotatably connected inside the guide frame. A rope-laying rod (345) with its bottom end slidably connected to the bottom wall of the guide frame is threaded on the threaded rod (344). A second motor (346) with its output end connected to the threaded rod (344) is installed on the outer wall of the guide frame. The hoisting unit (15) has the same structure as the winding and unwinding assembly (34).

8. The anti-tipping hoisting device according to claim 7, characterized in that, The top of the side guide frame (21) and the bottom of the retaining rod (25) are both equipped with pulleys (35), and one end of the control rope (33) is connected to the drum (342) after passing through the pulley (35) and the rope guide rod (345).

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