Wind resistant stability type offshore crane

Abstract

This invention discloses a wind-resistant and stable offshore crane, belonging to the field of offshore crane technology. The wind-resistant and stable offshore crane includes a slewing support base and a crane column fixedly installed on the upper surface of the slewing support base. Its features include: a telescopic boom assembly rotatably mounted on the crane column, with a hook assembly installed at the telescopic end of the telescopic boom assembly; a primary reinforcement column fixed to the telescopic end of the telescopic boom assembly, with a primary reinforcement rope connected to the primary reinforcement column; a secondary reinforcement column fixed to the main boom of the telescopic boom assembly, with a secondary reinforcement rope connected to the secondary reinforcement column; and an anti-vibration component for wind resistance reinforcement on the telescopic boom assembly. During use, the length of the telescopic boom assembly can be flexibly adjusted according to real-time wind force, lifting distance, and load requirements. The anti-vibration component, in conjunction with the boom's extension and retraction, forms a triangular support, effectively suppressing boom sway and wind-induced vibration, significantly improving wind resistance stability.

Description

Technical Field

[0001] This invention relates to the field of offshore crane technology, specifically a wind-resistant and stable offshore crane. Background Technology

[0002] Offshore cranes are widely used in offshore platforms, ship decks, and port terminals, mainly undertaking tasks such as lifting large components, installing equipment, and transferring materials. They rely on hydraulic or mechanical drives to realize the luffing, slewing, and lifting movements of the boom, and transmit power through wire ropes and pulley blocks to complete the vertical lifting and horizontal movement of the load.

[0003] For example, patent CN117263046B discloses a limiting type offshore crane frame, including: a frame column, on the top of which a hydraulic rotating base and a positioning shell are fixedly installed, and one end of the frame arm is connected to the hydraulic rotating base; a motor body is fixed on the outer wall of the positioning shell; it also includes: a limiting anti-fall component, which is set at the end of the frame arm, and the lifting cable is installed through the limiting anti-fall component. The limiting anti-fall component uses hydraulic and frictional action to prevent the lifting cable from falling and slipping; a pressure regulating component, which is set on the outside of the positioning shell, and uses the rotation speed of the motor body to adjust and reduce the hydraulic pressure of the limiting anti-fall component; the offshore crane frame uses hydraulic external force and frictional force to achieve continuous limiting pressure on the lifting rope inside the frame, and can monitor and limit the fall of the rope in use in real time without affecting the normal operation of the lifting operation.

[0004] For example, patent CN118723766B discloses a highly stable bottom-supported suspension offshore crane, including a support column fixedly installed on an offshore 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 set below the winch. A cross-shaped mounting frame is fixedly installed at the bottom of the main lifting rope. This highly stable bottom-supported suspension offshore crane uses a suspension hook to lift the main cargo body, and then the winch winds up the main lifting rope to lift the main cargo body to a high position. At the same time, the telescopic cylinder retracts and uses the second guide wheel at its top to pull the auxiliary pull rope, thereby lifting the bottom plate upward and supporting the bottom of the main cargo body, reducing the overall stress on the suspension hook, and the bottom plate can stabilize the main cargo body and prevent it from loosening.

[0005] For example, patent CN119612380A discloses a sway-reducing and earthquake-resistant marine crane, which includes a frame swing wall at the upper end of the frame column, a winch at the end of the frame swing wall, and a main traction rope inside the winch; a top plate is fixedly connected to the lower end of the main traction rope, and a fixed plate is fixedly connected to the lower side of the edge of the top plate; when the device moves a heavy object upwards, and the object sways or shifts, it will squeeze the side compression plate. At this time, the distance between the compression plate and the side plate changes. The distance sensor can judge the distance moved by the heavy object. When the distance moved by the heavy object is large, the data can be transmitted to the controller to remind the staff that the heavy object has shifted and there is a safety hazard. The auxiliary traction rope pulls on the fixed plate outward, reducing the swaying of the single main traction rope when lifting the heavy object, and the sway-reducing effect is good.

[0006] Most existing offshore cranes adopt a fixed-length boom structure, with their working radius and boom length being fixed parameters. They cannot be dynamically adjusted according to working conditions, lifting load requirements, or marine environmental conditions. In strong winds and high sea states, the long boom has a large windward area and significant wind-induced load torque, which can easily cause large boom swaying, structural vibration, or even resonance. This not only significantly reduces the accuracy of lifting operations but also exacerbates the alternating fatigue load on the boom, pins, and welds, affecting the service life of the equipment and operational safety. At the same time, fixed booms cannot be actively shortened according to wind strength to reduce wind resistance, resulting in poor adaptability to severe weather, limited operating windows, and an inability to meet the dual requirements of heavy-load lifting and wind resistance stability.

[0007] To address the aforementioned issues, there is an urgent need for innovative designs based on existing offshore cranes. Summary of the Invention

[0008] The purpose of this invention is to provide a wind-resistant and stable offshore crane to address the problems mentioned in the background art, where existing offshore cranes mostly adopt fixed-length boom structures. Their working radius and boom length are fixed parameters, which cannot be dynamically adjusted according to working conditions, lifting load requirements, or marine environmental conditions. In strong winds and high sea states, the long boom has a large windward area and significant wind-induced load torque, which can easily cause large boom swaying, structural vibration, or even resonance. This not only significantly reduces the accuracy of lifting operations but also exacerbates the alternating fatigue load on the boom, pins, and welds, affecting the service life of the equipment and operational safety. At the same time, fixed booms cannot be actively shortened according to wind strength to reduce wind resistance, resulting in poor adaptability to severe weather, limited operating windows, and an inability to meet the dual requirements of heavy-load lifting and wind resistance stability.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a wind-resistant and stable offshore crane, comprising a slewing support base and a crane column fixedly installed on the upper surface of the slewing support base. A telescopic boom assembly is rotatably mounted on the crane column, and a hook assembly is installed at the telescopic end of the telescopic boom assembly. A primary reinforcement column is fixed to the telescopic end of the telescopic boom assembly, and a primary reinforcement rope is connected to the primary reinforcement column. A secondary reinforcement column is fixed to the main boom of the telescopic boom assembly, and a secondary reinforcement rope is connected to the secondary reinforcement column. A counterweight boom is fixed to the crane column, and a primary winding reel and a secondary winding reel are rotatably mounted on the counterweight boom. A crane column is longitudinally mounted with... It has a primary guide roller and a secondary guide roller. The primary reinforcing rope is guided by the primary guide roller and then wound onto the primary winding wheel. The secondary reinforcing rope is guided by the secondary guide roller and then wound onto the secondary winding wheel. The telescopic boom assembly is also equipped with an anti-seismic component for wind and shock resistance. The telescopic boom assembly includes two sets of fixed boom sections rotatably mounted on the crane column. Each of the two sets of fixed boom sections is telescopically connected to a movable boom section. A telescopic hydraulic cylinder is fixed between the two sets of fixed boom sections, and the output end of the telescopic hydraulic cylinder is fixedly connected to the movable boom section. The fixed boom section and the movable boom section are respectively equipped with a clamping mechanism for adjusting the tension of the primary and secondary reinforcing ropes.

[0010] Preferably, the fixed arm segment has a guide groove on its side, a guide post is slidably connected in the guide groove, and the guide post is fixedly connected to the movable arm segment; a roller is rotatably installed on the guide post, the roller is rolled in the slide rail, and the slide rail is fixedly installed on the surface of the fixed arm segment.

[0011] Preferably, the seismic stabilizing component includes a mounting base fixedly installed on a fixed arm segment, with a driven rotating arm rotatably connected to the mounting base; a movable base is fixedly connected to the guide column, with two active rotating arms rotatably connected to the movable base, and the two active rotating arms are rotatably connected to the driven rotating arms.

[0012] Preferably, a fixed base is fixed on the driven rotating arm, and a diagonal brace is rotatably connected to the fixed base; a movable base is movably arranged between the two driving rotating arms, and the other end of the diagonal brace is rotatably connected to the movable base.

[0013] Preferably, the active rotating arm has an embedded groove on its side wall, a movable cylindrical rod is slidably connected in the embedded groove, and a movable base is fixedly connected to the movable cylindrical rod.

[0014] Preferably, a vertical rod is fixed in the inner groove of the active rotating arm, a movable cylindrical rod is slidably connected to the vertical rod, and an anti-vibration spring is elastically connected between the movable cylindrical rod and the active rotating arm.

[0015] Preferably, the clamping mechanism includes a rotating ring rotatably mounted outside the primary and secondary reinforcement columns, and a pressure bar fixed on the rotating ring to clamp the primary and secondary reinforcement ropes.

[0016] Preferably, a push plate is fixed on the side of the rotating ring away from the pressure rod; an electric telescopic rod is fixedly installed on both the fixed arm section and the movable arm section, and a push rod is fixed to the telescopic end of the electric telescopic rod, with the push rod fitting against the push plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This wind-resistant and stable marine crane, through the nested telescopic design of the fixed and movable boom sections of the telescopic boom assembly, can dynamically adjust the total length of the boom according to real-time sea conditions, wind force level, and operating radius requirements. Under strong wind conditions, the boom can be shortened to reduce the windward area and reduce wind-induced load torque, thereby suppressing boom swaying and vibration at the source. When the operating distance is insufficient, the boom can be extended to expand the working range, taking into account both lifting flexibility and wind resistance stability. This solves the pain point that traditional fixed boom cranes cannot adapt to the changing marine conditions and effectively extends the equipment's operating window.

[0018] The telescopic boom assembly is also equipped with an anti-seismic component for wind resistance. The anti-seismic component drives the guide column to move through the telescopic movement of the movable boom section, causing the active rotating boom and the driven rotating boom to automatically unfold and form a stable triangular support structure with the fixed boom section. This support action is achieved entirely by the linkage of boom telescopic movement. The stiffness is automatically strengthened during the boom extension process. At the same time, the anti-seismic spring can effectively absorb wind-induced vibration energy and reduce fatigue damage to the boom structure caused by alternating loads.

[0019] Primary and secondary reinforcing ropes are installed at the telescopic end and main boom section of the telescopic boom assembly, respectively. The tension of the ropes is controllably adjusted by guide rollers and winding wheels. This design creates a multi-point constrained force system on the boom, which can effectively offset the bending moment and torque generated by the lifting load and wind load, suppress the downward deflection and lateral torsional deformation of the boom, and greatly improve the overall rigidity and anti-overturning capacity of the boom. It is especially suitable for heavy-duty lifting operations with long telescopic boom sections.

[0020] The fixed boom section and the movable boom section are respectively equipped with a clamping mechanism to adjust the tension of the primary and secondary reinforcement ropes. The push rod driven by the electric telescopic rod drives the rotating ring and the pressure rod to adjust the tension of the primary and secondary reinforcement ropes. The tension of the ropes can be adjusted in real time according to the changes in the load, wind load and boom length, so that the reinforcement system is always in the optimal stress state. At the same time, it ensures the stress balance between the ropes and the boom and extends the service life of the components. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the rotating support base structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the fixed arm segment and the movable arm segment of the present invention.

[0023] Figure 3This is a schematic diagram of the primary and secondary reinforcement rope structures of the present invention.

[0024] Figure 4 This is a schematic diagram of the active rotating arm and the driven rotating arm of the present invention.

[0025] Figure 5 This is a schematic diagram of the movable seat structure of the present invention.

[0026] Figure 6 This is a schematic diagram of the roller and slide structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the diagonal bracing structure of the present invention.

[0028] Figure 8 This is a schematic diagram of the movable base structure of the present invention.

[0029] Figure 9 This is a schematic diagram of the movable cylindrical rod structure of the present invention.

[0030] Figure 10 This is a schematic diagram of the secondary reinforcement column structure of the present invention.

[0031] Figure 11 This is a schematic diagram of the primary reinforcement column structure of the present invention.

[0032] In the diagram: 1. Slewing support base; 2. Crane column; 3. Telescopic boom assembly; 31. Fixed boom section; 32. Movable boom section; 33. Telescopic hydraulic cylinder; 4. Hook assembly; 5. Primary reinforcement column; 6. Primary reinforcement rope; 61. Primary winding reel; 62. Primary guide roller; 7. Secondary reinforcement column; 8. Secondary reinforcement rope; 81. Secondary winding reel; 82. Secondary guide roller; 9. Counterweight boom; 10. Guide chute; 11. Guide column; 12. 13. Roller; 14. Slide rail; 15. Anti-vibration component; 16. Mounting base; 17. Driven rotating arm; 18. Moving base; 19. Active rotating arm; 10. Fixed base; 10. Diagonal brace; 10. Moving base; 11. Embedded groove; 12. Moving cylindrical rod; 13. Upright pole; 14. Anti-vibration spring; 15. Rotating ring; 16. Pressure rod; 17. Push plate; 18. Electric telescopic rod; 19. Push rod. 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 Figure 1 - Figure 5 The present invention provides the following technical solution: a wind-resistant and stable marine crane, comprising a slewing support base 1 and a crane column 2 fixedly installed on the upper surface of the slewing support base 1. A telescopic boom assembly 3 is rotatably installed on the crane column 2, and a hook assembly 4 is installed at the telescopic end of the telescopic boom assembly 3. A primary reinforcement column 5 is fixed at the telescopic end of the telescopic boom assembly 3, and a primary reinforcement rope 6 is connected to the primary reinforcement column 5. A secondary reinforcement column 7 is fixed on the main boom of the telescopic boom assembly 3, and a secondary reinforcement rope 8 is connected to the secondary reinforcement column 7. A balance arm 9 is fixed on the crane column 2, and a primary winding wheel 61 and a secondary winding wheel 81 are rotatably installed on the balance arm 9. A primary guide roller 62 and a secondary guide roller are longitudinally installed on the crane column 2. 82. After being guided by the primary guide roller 62, the primary reinforcing rope 6 is wound onto the primary winding wheel 61. After being guided by the secondary guide roller 82, the secondary reinforcing rope 8 is wound onto the secondary winding wheel 81. The telescopic boom assembly 3 is also equipped with an anti-seismic component 14 for wind reinforcement. The telescopic boom assembly 3 includes two sets of fixed boom sections 31 rotatably mounted on the crane column 2. Each of the two sets of fixed boom sections 31 is telescopically connected to a movable boom section 32. A telescopic hydraulic cylinder 33 is fixed between the two sets of fixed boom sections 31, and the output end of the telescopic hydraulic cylinder 33 is fixedly connected to the movable boom section 32. The fixed boom section 31 and the movable boom section 32 are respectively equipped with a clamping mechanism for adjusting the tension of the primary reinforcing rope 6 and the secondary reinforcing rope 8.

[0035] During hoisting and handling operations, the telescopic boom assembly 3 is rotated as a whole by the motor on the crane column 2. The pitching angle of the telescopic boom assembly 3 is adjusted to smoothly hang the marine engineering components to be transferred on the hook assembly 4, thus completing the lifting and relocation of the components.

[0036] During hoisting and handling operations, the overall extension length of the telescopic boom assembly 3 can be flexibly adjusted according to the actual hoisting distance, hoisting load, and real-time wind force at sea. In strong winds and severe sea conditions, the boom can be retracted to shorten the cantilever length and reduce the windward force area. This, combined with the anti-vibration component 14 on the outside of the telescopic boom assembly 3, forms a linkage support structure, enhancing the structural strength of the boom itself. Simultaneously, the primary and secondary reinforcing ropes 6 and 8 can be wound and unwound via the primary winding wheel 61 and the secondary winding wheel 81, respectively. With the help of the primary guide roller 62 and the secondary guide roller 82, the telescopic boom assembly 3 is tensioned and reinforced from multiple directions, effectively suppressing boom sway and deviation. This significantly improves the hoisting stability and operational safety of the entire machine under complex marine conditions, meeting the needs of marine engineering hoisting operations in different sea areas and under different working conditions.

[0037] When performing hoisting operations in windy conditions, the overall length of the telescopic boom assembly 3 is first shortened to reduce the cantilever length, thereby reducing the impact of wind resistance and initially achieving the purpose of earthquake resistance in windy environments. During the adjustment of the length of the telescopic boom assembly 3, the earthquake-resistant component adjusts accordingly. The active rotating arm 144, the driven rotating arm 142, and the fixed arm section 31 in the earthquake-resistant component form a stable triangular support structure, reinforcing the structure of the telescopic boom assembly 3 after telescopic adjustment. This ensures the stability of the overall structure of the telescopic boom assembly 3 after telescopic adjustment, even in the event of pressure failure or fluctuation of the telescopic hydraulic cylinder 33, further improving the stability of the telescopic boom assembly. The third component demonstrates excellent seismic resistance in windy conditions. Secondly, after adjusting the telescopic boom assembly 3, the fixed boom section 31 and movable boom section 32 in the telescopic boom assembly 3 are connected and reinforced to the crane column 2 and counterweight boom 9 by winding up the primary reinforcement rope 6 and the secondary reinforcement rope 8. Under the tension of the primary reinforcement rope 6 and the secondary reinforcement rope 8, the telescopic boom assembly 3 is no longer in a cantilever state, and its overall structure is stable, effectively resisting wind resistance from different directions. The combined effects of length adjustment of the telescopic boom assembly 3, follow-up adjustment of the seismic components, and winding up and supporting the primary and secondary reinforcement ropes 6 and 8 ensure stable seismic resistance during crane operation.

[0038] Please see Figure 2 - Figure 7 The fixed arm section 31 has a guide groove 10 on its side, and a guide post 11 is slidably connected in the guide groove 10. The guide post 11 is fixedly connected to the movable arm section 32. A roller 12 is rotatably mounted on the guide post 11. The roller 12 is rolled in the slide rail 13, and the slide rail 13 is fixedly mounted on the surface of the fixed arm section 31.

[0039] In actual use, starting the telescopic hydraulic cylinder 33 can push the movable boom section 32 to slide relative to the fixed boom section 31 to complete the telescopic sliding, thereby flexibly adjusting the overall length of the telescopic boom assembly 3. During the telescopic movement of the movable boom section 32, the guide column 11 slides along the guide groove 10, while the roller 12 rolls smoothly along the slide 13, which plays a double limiting and guiding role for the movable boom section 32, effectively ensuring smooth and stable telescopic movement, avoiding deviation and jamming during telescopic movement, and improving the accuracy and operational stability of boom telescopic adjustment.

[0040] Please see Figure 2 - Figure 9The seismic-resistant component 14 includes a mounting base 141 fixedly mounted on a fixed arm section 31, with a driven rotating arm 142 rotatably connected to the mounting base 141; a movable base 143 fixedly connected to a guide column 11, with two active rotating arms 144 rotatably connected to the movable base 143, and the two active rotating arms 144 rotatably connected to the driven rotating arms 142. A fixed base 145 is fixedly mounted on the driven rotating arm 142, with a diagonal brace 146 rotatably connected to the fixed base 145; a movable base 147 is movably disposed between the two active rotating arms 144, with the other end of the diagonal brace 146 rotatably connected to the movable base 147. An embedded groove 1471 is formed on the side wall of the active rotating arm 144, with a movable cylindrical rod 1472 slidably connected in the embedded groove 1471, and the movable base 147 is fixedly connected to the movable cylindrical rod 1472. A vertical rod 1473 is fixed in the inner groove 1471 of the active rotating arm 144, and a movable cylindrical rod 1472 is slidably connected to the vertical rod 1473. An anti-vibration spring 1474 is elastically connected between the movable cylindrical rod 1472 and the active rotating arm 144.

[0041] When the movable boom segment 32 is telescopically adjusted, it will simultaneously cause the guide column 11 to undergo axial displacement. The guide column 11 will then cause the fixed movable seat 143 on it to move synchronously, thus changing the distance between the movable seat 143 and the mounting seat 141 on the fixed boom segment 31. During this process, the active rotating arm 144 and the driven rotating arm 142 located between the two will simultaneously rotate in angle and adjust in attitude. After the rotation is completed, the active rotating arm 144, the driven rotating arm 142 and the fixed boom segment 31 will form a stable triangular support structure, while the diagonal brace will also be used. 146 adjusts the tilt angle synchronously with the extension and retraction of the boom, driving the movable base 147 to drive the movable cylindrical rod 1472 to slide along the upright 1473 inside the embedded groove 1471. In conjunction with the anti-vibration spring 1474, elastic buffering and shock absorption are achieved. It can not only rely on the triangular stabilizing structure to greatly improve the overall structural strength and bending resistance of the telescopic boom, effectively resist the lateral impact force brought by strong winds at sea, and reduce the swing amplitude of the boom, but also use the elastic buffer structure to absorb the vibration load generated by hoisting operations and wave swaying, further improving the stability and overall wind and earthquake resistance of the telescopic boom during use.

[0042] Example 2: Please refer to Figure 1 - Figure 3 , Figure 10 and Figure 11Based on Embodiment 1, a clamping mechanism is also disclosed, the specific structure of which is as follows: The clamping mechanism includes a rotating ring 15 rotatably mounted outside the primary reinforcing column 5 and the secondary reinforcing column 7. A pressure rod 16 is fixed on the rotating ring 15, pressing against the primary reinforcing rope 6 and the secondary reinforcing rope 8. A push plate 17 is fixed on the side of the rotating ring 15 away from the pressure rod 16; an electric telescopic rod 18 is fixedly mounted on both the fixed arm section 31 and the movable arm section 32. A push rod 19 is fixed to the telescopic end of the electric telescopic rod 18, and the push rod 19 is fitted next to the push plate 17.

[0043] After the overall length of the telescopic boom assembly 3 is adjusted, the motor on the operating balance arm 9 controls the rotation of the primary winding wheel 61 and the secondary winding wheel 81. The rotation of the primary winding wheel 61 rotates and winds the primary reinforcing rope 6 around it, while the rotation of the secondary winding wheel 81 rotates and winds the secondary reinforcing rope 8 around it. At this time, the primary reinforcing rope 6 and the secondary reinforcing rope 8 stretch and reinforce the fixed arm section 31 and the movable arm section 32 along the guiding direction of the primary guide roller 62 and the secondary guide roller 82. Simultaneously, the operating electric telescopic rod 18 pushes the push rod 19 outward, and the push rod 19 moves to squeeze the push plate 17, pushing... The plate 17 is compressed, causing the rotating ring 15 to rotate outside the primary reinforcement column 5 and the secondary reinforcement column 7. When the rotating ring 15 rotates, it causes the pressure rod 16 to rotate and approach the primary reinforcement rope 6 and the secondary reinforcement rope 8. Through the pressure rod 16 pressing the ropes, the tension of the primary reinforcement rope 6 and the secondary reinforcement rope 8 is precisely adjusted, so that the ropes are always in the optimal stress state. This avoids the reinforcement failure and swaying caused by the ropes being too loose, or the fatigue damage caused by the ropes being too tight, thereby further strengthening the wind-resistant reinforcement effect of the telescopic boom assembly 3 and ensuring the safety and stability of marine engineering lifting operations.

[0044] 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 according to the specific circumstances.

[0045] 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 wind resistant stable offshore crane comprising a slewing support base (1) and a crane column (2) fixedly mounted to the upper surface of the slewing support base (1), characterized in that: The crane column (2) is rotatably mounted with a telescopic boom assembly (3), and the telescopic end of the telescopic boom assembly (3) is equipped with a hook assembly (4). A primary reinforcement column (5) is fixed on the telescopic end of the telescopic boom assembly (3), and a primary reinforcement rope (6) is connected to the primary reinforcement column (5). A secondary reinforcement column (7) is fixed on the main boom of the telescopic boom assembly (3), and a secondary reinforcement rope (8) is connected to the secondary reinforcement column (7). A balance arm (9) is fixed on the crane column (2). A primary winding wheel (61) and a secondary winding wheel (81) are rotatably installed on the balance arm (9). A primary guide roller (62) and a secondary guide roller (82) are longitudinally installed on the crane column (2). After the primary reinforcing rope (6) is guided by the primary guide roller (62), it is wound around the primary winding wheel (61). After the secondary reinforcing rope (8) is guided by the secondary guide roller (82), it is wound around the secondary winding wheel (81). The telescopic boom assembly (3) is also equipped with an anti-seismic assembly (14) for wind reinforcement and wind resistance. The telescopic boom assembly (3) includes two sets of fixed boom sections (31) rotatably mounted on the crane column (2), and each set of fixed boom sections (31) is telescopically connected to a movable boom section (32); a telescopic hydraulic cylinder (33) is fixed between the two sets of fixed boom sections (31), and the output end of the telescopic hydraulic cylinder (33) is fixedly connected to the movable boom section (32); The fixed arm section (31) and the movable arm section (32) are respectively equipped with a clamping mechanism for adjusting the tension of the primary reinforcement rope (6) and the secondary reinforcement rope (8); The seismic component (14) includes a mounting base (141) fixedly mounted on a fixed arm section (31), and a driven rotating arm (142) is rotatably connected to the mounting base (141). A movable seat (143) is fixedly connected to the guide column (11), and two active rotating arms (144) are rotatably connected to the movable seat (143). The two active rotating arms (144) are rotatably connected to the driven rotating arm (142). A fixed base (145) is fixed on the driven rotating arm (142), and a diagonal brace (146) is rotatably connected to the fixed base (145). A movable base (147) is movably disposed between the two active rotating arms (144), and the other end of the diagonal brace (146) is rotatably connected to the movable base (147); The active rotating arm (144) has an embedded groove (1471) on its side wall, and a movable cylindrical rod (1472) is slidably connected in the embedded groove (1471). The movable base (147) is fixedly connected to the movable cylindrical rod (1472). A vertical rod (1473) is fixed in the inner groove (1471) of the active rotating arm (144), and a movable cylindrical rod (1472) is slidably connected to the vertical rod (1473). An anti-vibration spring (1474) is elastically connected between the movable cylindrical rod (1472) and the active rotating arm (144).

2. The wind-resistant and stable marine crane according to claim 1, characterized in that: The fixed arm section (31) has a guide groove (10) on its side, and a guide post (11) is slidably connected in the guide groove (10). The guide post (11) is fixedly connected to the movable arm section (32). A roller (12) is rotatably mounted on the guide column (11). The roller (12) is rolled in the slide rail (13). The slide rail (13) is fixedly mounted on the surface of the fixed arm section (31).

3. The wind-resistant and stable marine crane according to claim 1, characterized in that: The clamping mechanism includes a rotating ring (15) rotatably installed outside the primary reinforcement column (5) and the secondary reinforcement column (7), and a pressure bar (16) is fixed on the rotating ring (15) and clamped next to the primary reinforcement rope (6) and the secondary reinforcement rope (8).

4. The wind-resistant and stable marine crane according to claim 3, characterized in that: A push plate (17) is fixed on the side of the rotating ring (15) away from the pressure rod (16). Electric telescopic rods (18) are fixedly installed on both the fixed arm section (31) and the movable arm section (32). A push rod (19) is fixed at the telescopic end of the electric telescopic rod (18), and the push rod (19) is fitted next to the push plate (17).

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