A suspended slewing buffer offshore crane

Abstract

This invention discloses a suspended rotary buffer offshore crane, relating to the field of lifting equipment. The crane body is mounted on the upper end of a pre-reserved base, with a drive component located inside the base and a drive component output component located outside the drive component. The drive component output component is connected to the lower end of the crane body. An external docking component is nested on the outer side of the lower end of the crane body, and a vertical pre-reserved slot is formed on the inner side of the crane body. This suspended rotary buffer offshore crane uses an auxiliary pressure relief structure to guide and relieve the high-intensity wind force borne by the crane body, avoiding greater adverse effects from direct wind force. It avoids the rigid locking mechanism of hydraulic balance valves inside the crane equipment under normal conditions. Therefore, under strong wind conditions, the adaptive auxiliary pressure relief structure prevents the continuously locked rotary gearbox from being easily damaged by external forces.

Description

Technical Field

[0001] This invention relates to the field of hoisting and lifting equipment technology, specifically to a suspended rotary buffer marine crane. Background Technology

[0002] Offshore cranes are important lifting and hoisting equipment between sea and land. They are mainly used for material hoisting and personnel transportation in scenarios such as ships, drilling platforms, and offshore wind power. Most of them carry out lifting and transfer work through a suspended structure.

[0003] For example, the patent with publication number CN119612380A discloses a type of anti-sway and anti-vibration marine crane, which relates to the field of marine crane technology. It includes a frame swing wall installed at the upper end of the frame column, and a winch installed on the end side of the frame swing wall, with a main traction rope installed inside the winch. The lower end of the main traction rope is fixedly connected to a top plate, and a fixed plate is fixedly connected to the lower side of the edge of the top plate. When the load sways and shifts, it will squeeze the side squeezing plate. At this time, the distance between the squeezing plate and the side plate changes. The distance of the load movement can be judged by a distance sensor. When the load movement distance is large, the data can be transmitted to the controller to remind the staff that the load has shifted and there is a safety hazard. The auxiliary traction rope pulls the fixed plate outward.

[0004] For example, patent CN118723766B discloses a high-stability bottom-supporting suspended marine crane, which includes a support column fixedly installed on a marine platform. A rotating platform is rotatably installed on the upper end of the support column, and a suspension arm is rotatably installed above the rotating platform. A winch is fixedly installed at the top of the suspension arm, and a main lifting rope for lifting is provided below the winch. A cross-shaped mounting frame is fixedly installed at the bottom of the main lifting rope. The main body of the cargo is then lifted to a high position by winding the main lifting rope with the winch. At the same time, the telescopic cylinder retracts and uses the second guide wheel at its top to pull the auxiliary rope, thereby lifting the bottom plate upward and supporting the bottom of the cargo body.

[0005] For example, the patent with publication number CN220866966U describes a polar anti-sway marine crane, which includes an anti-sway frame. A connecting cylinder is fixedly connected to the inner wall of the anti-sway frame. A servo motor is fixedly connected to the top of the connecting cylinder. The output end of the servo motor extends to the inner wall of the connecting cylinder and is fixedly connected to a pump blade. A connecting pipe is fixedly connected to the outer wall of the connecting cylinder. A water tank is fixedly connected to one end of the connecting pipe. By setting up the connecting pipe and the water tank, the weight of the lifted workpiece will cause the rotating base to swing. When the rotating base swings, the control box controls the electric push rod on the same side of the connecting pipe to work. The electric push rod works by driving the gate plate to open and close the connecting pipe through the lifting push plate.

[0006] Most of the aforementioned existing technologies improve the overall structure. However, when the existing offshore cranes are exposed to severe weather, the ship or the entire crane swings violently. Under normal conditions, the internal components of the crane equipment are mostly rigidly locked by hydraulic balance valves. In strong winds, the slewing gearbox, which remains locked, is easily damaged by external forces. It cannot adaptively adjust its angle according to the wind conditions to guide and depressurize the wind force directly in contact with it, which limits its application. Summary of the Invention

[0007] The purpose of this invention is to provide a suspended slewing buffer offshore crane to solve the problem mentioned in the background art that most crane equipment under normal conditions uses hydraulic balance valves for rigid locking. Under strong wind conditions, the slewing gearbox, which is in a continuously locked state, is easily damaged by external forces and cannot adaptively adjust its angle according to the wind conditions to guide and depressurize the wind force directly in contact with it.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a suspended rotary buffer marine crane, comprising a reserved base, a crane body mounted on the upper end of the reserved base, a drive component disposed on the inner side of the reserved base, and a drive component output component disposed on the outer side of the drive component, the drive component output component being connected to the lower end of the crane body; an external docking component is nested on the outer side of the lower end of the crane body, and a vertical reserved slot is provided on the inner side of the crane body, the vertical reserved slot being connected to the drive component output component; an auxiliary pressure relief structure is provided between the reserved base and the crane body, the auxiliary pressure relief structure being used to guide and relieve the high-intensity wind force borne by the crane body.

[0009] More preferably, the auxiliary pressure relief structure is provided with an abutting fastener, which is fixedly connected to the outer end of the external docking member. The upper inner side of the output component of the drive component is nested with a vertical docking member, and the upper end of the vertical docking member docks with the inner side of the crane body.

[0010] More preferably, a reset spring assembly is fixedly connected to the lower outer end of the vertical docking member, and the reset spring assembly is docked with the inner lower end of the crane body; a limiting docking member is fixed to the lower end of the vertical docking member, and the upper end of the limiting docking member is docked with the inner side of the crane body; a built-in reserved liquid bladder is docked to the inner side of the drive component output member, and the position of the built-in reserved liquid bladder corresponds to the lower end of the limiting docking member.

[0011] In a further preferred embodiment, the crane body forms a rotatable structure along the upper inner side of the reserved base through the output component of the drive component, and the external docking component contacts the wind-driven contact fixing component to form a sliding structure along the inner side of the crane body. The contact fixing component applies pressure to the contacting vertical docking component simultaneously, and the vertical docking component drives the limiting docking component to move down synchronously through the reset spring assembly.

[0012] More preferably, after the limiting docking member moves down synchronously with the vertical docking member and disengages from the positioning state between itself and the crane body, the crane body is in a disengaged locking state along the upper end of the drive component output member.

[0013] Further preferably, a guide rotation structure is provided between the crane body and the output component of the drive component. The guide rotation structure controls the return of the support range of the crane body after the force is released. The guide rotation structure is provided with a supply pipe, which is located inside the built-in reserved liquid bladder and passes through the inside of the output component of the drive component. The inside of the output component of the drive component is connected to the built-in hydraulic bladder, and the built-in hydraulic bladder is connected to the supply pipe. The upper end of the built-in hydraulic bladder is connected to a friction contact member, which corresponds to the lower end of the crane body.

[0014] More preferably, the inner side of the crane body is connected to a docking built-in rod, and a reserved steel cable assembly is wound around the outer side of the docking built-in rod. The reserved steel cable assembly is connected to the outer side of the output component of the drive component. A torsion spring component is connected between the docking built-in rod and the inner side of the crane body.

[0015] In a further preferred embodiment, during the downward movement of the limiting docking component, pressure is simultaneously applied to the contacting built-in reserved liquid bladder, and the built-in reserved liquid bladder is supplied to the interior of the built-in hydraulic liquid bladder at the end through the supply pipe. The expansion of the built-in hydraulic liquid bladder pushes the outer friction contact component to move upward synchronously to contact and apply pressure to the lower end of the crane body.

[0016] More preferably, during the process of the output component of the drive component being under force, its inner side forms a reset support through the traction state between the reserved steel cable assembly and the torsion spring component, and the reserved steel cable assembly is provided with 4 sets at equal angles to the inner side of the crane body.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This suspended slewing buffer offshore crane is equipped with an auxiliary pressure relief structure. This structure guides the relief of high-intensity wind force on the crane body. The external docking parts on the lower outer side of the crane body will move inward under the influence of wind force, which in turn drives the fixed inner anti-fixing parts to move inward synchronously and apply pressure to the vertical docking parts in contact with them. Under the pressure of strong wind, the vertical docking parts will drive the limiting docking parts to move down along the inner side of the crane body synchronously through the return spring assembly until the vertical docking parts and the limiting docking parts are released from the locking state between the drive component output part. At this time, the crane body can be released from the overall locked state, and thus the angle can be adjusted adaptively according to the influence of wind force to relieve pressure, thereby avoiding the adverse effects of direct wind force.

[0019] Furthermore, to avoid the rigid locking of the crane equipment under normal conditions through hydraulic balance valves, an adaptive auxiliary pressure relief structure is used to prevent the rotary gearbox, which is in a continuously locked state, from being easily damaged by external forces when exposed to strong winds.

[0020] Furthermore, the vertical connecting parts and the limiting connecting parts will simultaneously pressurize the built-in reserved liquid bladder at the bottom, so that the built-in reserved liquid bladder can supply to the built-in hydraulic bladder at the end through the supply pipe. The inflated built-in hydraulic bladder will push the outer friction contact parts to move upward synchronously until they contact the lower end of the crane body in the moving state and apply pressure, thereby assisting in the control of its angular movement state after bearing wind force and improving its stress relief stability.

[0021] Furthermore, a guiding rotation structure is provided to control the return of the support range of the crane body after stress relief. As the crane body rotates along the outside of the drive component output component that has disengaged from the positioning state, the reserved steel cable assembly connected to the outside of the drive component output component will form a reset traction support through the traction state between it and the torsion spring component. The locking state between the four sets of reserved steel cable assemblies and the torsion spring component ensures a rapid support state after the crane body angle movement, preventing secondary damage from disengaging from the positioning state. It effectively and adaptively makes angle fine adjustments according to the wind force, thereby guiding and relieving the pressure of the wind force in direct contact, improving the overall practicality of the device. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the crane body of the present invention;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the reserved base for the present invention;

[0025] Figure 4 This is a half-section three-dimensional structural diagram of the output component of the drive unit of the present invention;

[0026] Figure 5 This is a partial three-dimensional structural diagram of the crane body of the present invention;

[0027] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the three-dimensional structure in the middle section;

[0028] Figure 7 This is a three-dimensional structural diagram of the friction contact component of the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the external docking component of the present invention in half section.

[0030] Figure 9 This is a three-dimensional structural diagram of the contact fixing component of the present invention;

[0031] Figure 10 This is a three-dimensional structural diagram of the vertical docking component of the present invention.

[0032] In the diagram: 1. Reserved base; 2. Crane body; 3. Drive component output; 4. External docking component; 5. Abutment fixing component; 6. Vertical docking component; 7. Return spring assembly; 8. Limit docking component; 9. Vertical reserved slot; 10. Built-in reserved liquid bladder; 11. Supply pipe; 12. Built-in hydraulic liquid bladder; 13. Friction abutment component; 14. Reserved steel cable assembly; 15. Connecting built-in rod; 16. Torsion spring component. Detailed Implementation

[0033] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1-7This invention provides the following technical solution: a suspended rotary buffer marine crane. To address the problem of severe swaying of ships or cranes in severe weather, and the fact that conventional crane equipment often uses hydraulic balance valves for rigid locking, the rotary gearbox, constantly locked in strong winds, is easily damaged by external forces, this invention discloses a design including a crane body 2 mounted on the upper end of a reserved base 1, a drive component on the inner side of the reserved base 1, and a drive component output component 3 on the outer side of the drive component, with the drive component output component 3 docking with the lower end of the crane body 2; an external docking component 4 is nested on the outer side of the lower end of the crane body 2, and a vertical reserved groove 9 is formed on the inner side of the crane body 2, docking with the drive component output component 3; an auxiliary pressure relief structure is provided between the reserved base 1 and the crane body 2 to guide and relieve the high-intensity wind force borne by the crane body 2.

[0035] The auxiliary pressure relief structure is equipped with a contact fixing member 5, which is fixedly connected to the outer end of the external docking member 4. A vertical docking member 6 is nested on the upper inner side of the drive component output member 3, and the upper end of the vertical docking member 6 docks with the inner side of the crane body 2. A return spring assembly 7 is fixedly connected to the lower outer side of the vertical docking member 6, and the return spring assembly 7 docks with the inner lower end of the crane body 2. A limit docking member 8 is fixed to the lower end of the vertical docking member 6, and the upper end of the limit docking member 8 docks with the inner side of the crane body 2. The inner side of the drive component output member 3 docks with the crane body 2. The crane body 2 is equipped with a built-in pre-reserved liquid bladder 10, and the lower end of the built-in pre-reserved liquid bladder 10 corresponds to the lower end of the limiting docking member 8. The crane body 2 forms a rotatable structure along the upper inner side of the reserved base 1 through the output part 3 of the drive component, and the rotation range of the crane body 2 is 0-35°. The external docking member 4 contacts the wind-driven abutment fixing member 5 to form a sliding structure along the inner side of the crane body 2. The abutment fixing member 5 applies pressure to the contacting vertical docking member 6 simultaneously, and the vertical docking member 6 drives the limiting docking member 8 to move down simultaneously through the return spring assembly 7. The limiting docking member 8 moves down with the vertical docking member. After component 6 moves down and disengages from its positioning position with the crane body 2, the crane body 2 is in a disengaged state along the upper end of the drive component output component 3. When the outer side of the crane body 2 comes into contact with strong winds due to severe weather, the outer connecting component 4 on the lower outer side of the crane body 2 will move inward under the influence of the wind, thereby driving the inner fixed contact fixing component 5 to move inward synchronously, and simultaneously applying pressure to the vertical connecting component 6 it contacts on the inner side. Under the pressure of strong winds, the vertical connecting component 6 will drive the limiting connecting component 8 to move synchronously along the crane body via the return spring assembly 7. The inner side of body 2 moves downward until the vertical docking part 6 and the limiting docking part 8 are disengaged from the locking state between the drive component output part 3. At this time, the crane body 2 can be released from the overall locked state, so as to adaptively adjust the angle for pressure relief according to the influence of wind force, thereby avoiding the adverse effects of direct wind force and avoiding the rigid locking work of the crane equipment inside the conventional state through hydraulic balance valve, etc. In the case of strong wind conditions, the adaptive auxiliary pressure relief structure prevents the rotary gearbox, which is in a continuously locked state, from being easily damaged by external forces.

[0036] Example 2: Please refer to Figures 3-10 Based on Embodiment 1, to address the technical problem of being unable to adaptively fine-tune the angle according to the wind force state, thereby failing to guide and depressurize the wind force in direct contact, a guiding rotation structure is also disclosed, the specific structure of which is as follows:

[0037] A guide rotation structure is provided between the crane body 2 and the drive component output 3. The guide rotation structure is used to control the return of the support range of the crane body 2 after the force is released.

[0038] The guide rotation structure is equipped with a supply pipe 11, which is located inside the built-in reserved liquid bladder 10. The supply pipe 11 passes through the inside of the drive component output part 3. The inside of the drive component output part 3 is connected to a built-in hydraulic bladder 12, and the built-in hydraulic bladder 12 is connected to the supply pipe 11. The upper end of the built-in hydraulic bladder 12 is connected to a friction contact part 13, which corresponds to the lower end of the crane body 2. The inside of the crane body 2 is connected to a docking built-in rod 15. A reserved steel cable assembly 14 is wound around the outside of the crane body 2, and the reserved steel cable assembly 14 is connected to the outside of the drive component output component 3. A torsion spring component 16 is connected between the inner side of the inner rod 15 and the inner side of the crane body 2. During the downward movement of the limiting docking component 8, pressure is simultaneously applied to the contacting inner reserved liquid bladder 10. The inner reserved liquid bladder 10 is supplied to the inner hydraulic liquid bladder 12 at the end through the supply pipe 11. The expansion of the inner hydraulic liquid bladder 12 pushes the outer friction contact component 13 to move upward to contact the lower end of the crane body 2 and apply pressure. As the vertical connecting piece 6 and the limiting connecting piece 8 move downwards along the interior of the crane body 2 under the influence of external force, they will simultaneously pressurize the built-in reserved liquid bladder 10 at the bottom. This allows the built-in reserved liquid bladder 10 to supply the built-in hydraulic liquid bladder 12 at the end through the supply pipe 11. The inflated built-in hydraulic liquid bladder 12 will push the outer friction contact piece 13 upwards until it contacts and presses against the lower end of the moving crane body 2, thereby assisting in the angular movement state of the crane body 2 under wind force. During the rotation of the drive component output 3 outside the disengaged position, the reserved steel cable assembly 14 connected to the outside of the drive component output 3 will form a reset traction support through the traction state between it and the torsion spring assembly 16. Through the locking state between the four sets of reserved steel cable assemblies 14 and the torsion spring assembly 16, the crane body 2 is guaranteed to be in a rapid support state after the angle movement, preventing secondary damage from disengaging from the position. It effectively makes adaptive angle fine-tuning according to the wind force, thereby guiding and depressurizing the wind force in direct contact.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A suspended rotary buffer marine crane, comprising a reserved base (1), wherein a crane body (2) is installed on the upper end of the reserved base (1), and a drive component is provided on the inner side of the reserved base (1), and a drive component output component (3) is provided on the outer side of the drive component, and the drive component output component (3) is connected to the lower end of the crane body (2). Its features are: An external docking component (4) is nested on the lower outer side of the crane body (2), and a vertical reserved slot (9) is opened on the inner side of the crane body (2), and the vertical reserved slot (9) is connected to the output component (3) of the drive component. An auxiliary pressure relief structure is provided between the reserved base (1) and the crane body (2), and the high-intensity wind force carried by the crane body (2) is guided and relieved through the auxiliary pressure relief structure. The auxiliary pressure relief structure is provided with a contact fixing part (5), and the contact fixing part (5) is fixedly connected to the outer end of the external docking part (4). The upper inner side of the drive component output part (3) is nested with a vertical docking part (6), and the upper end of the vertical docking part (6) docks with the inner side of the crane body (2). The lower outer end of the vertical docking part (6) is fixedly connected to a reset spring assembly (7), and the reset spring assembly (7) is docked with the inner lower end of the crane body (2). The lower end of the vertical docking part (6) is fixed with a limiting docking part (8), and the upper end of the limiting docking part (8) is connected to the inner side of the crane body (2). The inner side of the drive component output part (3) is connected with a built-in reserved liquid bladder (10), and the position of the built-in reserved liquid bladder (10) corresponds to the lower end of the limiting docking part (8).

2. The suspended rotary buffer marine crane according to claim 1, characterized in that: The crane body (2) forms a rotatable structure along the upper inner side of the reserved base (1) through the output part (3) of the drive component. The rotation range of the crane body (2) is 0-35°. The external docking part (4) contacts the wind-driven contact fixing part (5) to form a sliding structure along the inner side of the crane body (2). The contact fixing part (5) applies pressure to the contacting vertical docking part (6) simultaneously. The vertical docking part (6) drives the limiting docking part (8) to move down simultaneously through the reset spring assembly (7).

3. The suspended rotary buffer marine crane according to claim 2, characterized in that: After the limiting docking piece (8) moves down synchronously with the vertical docking piece (6) and leaves the positioning state between itself and the crane body (2), the crane body (2) is in a disengaged state along the upper end of the drive component output piece (3).

4. The suspended rotary buffer marine crane according to claim 1, characterized in that: A guide rotation structure is provided between the crane body (2) and the drive component output component (3) to control the return of the support range of the crane body (2) after the force is released; The guide rotation structure is provided with a supply pipe (11), and the supply pipe (11) is located inside the built-in reserved liquid bladder (10). The supply pipe (11) passes through the inside of the drive component output part (3). The inside of the drive component output part (3) is connected to the built-in hydraulic liquid bladder (12), and the built-in hydraulic liquid bladder (12) is connected to the supply pipe (11). The upper end of the built-in hydraulic liquid bladder (12) is connected to the friction contact part (13), and the friction contact part (13) corresponds to the lower end of the crane body (2).

5. A suspended rotary buffer marine crane according to claim 4, characterized in that: The inner side of the crane body (2) is connected to a docking built-in rod (15), and a reserved steel cable assembly (14) is wrapped around the outer side of the docking built-in rod (15). The reserved steel cable assembly (14) is connected to the outer side of the drive component output component (3). A torsion spring component (16) is connected between the docking built-in rod (15) and the inner side of the crane body (2).

6. A suspended rotary buffer marine crane according to claim 5, characterized in that: During the downward movement of the limiting docking part (8) under force, it simultaneously applies pressure to the contacting built-in reserved liquid bladder (10), and the built-in reserved liquid bladder (10) supplies the work to the interior of the built-in hydraulic liquid bladder (12) at the end through the supply pipe (11). The expansion of the built-in hydraulic liquid bladder (12) pushes the outer friction contact part (13) to move upward simultaneously to contact the lower end of the crane body (2) and apply pressure.

7. A suspended rotary buffer marine crane according to claim 6, characterized in that: During the process of the output component (3) of the drive component being under force, its inner side forms a reset support through the traction state between the reserved steel cable assembly (14) and the torsion spring component (16), and the reserved steel cable assembly (14) is provided with 4 sets at equal angles to the inner side of the crane body (2).

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