Multifunctional integrated ocean engineering super-tonnage lifting hook

Abstract

The invention discloses a multifunctional integrated oceanographic engineering super-tonnage lifting hook, and relates to the technical field of offshore lifting hooks, the multifunctional integrated oceanographic engineering super-tonnage lifting hook comprises a lifting hook main body structure, the lifting hook main body structure comprises a hook body assembly, a plurality of hook claw components and a heavy-load hook tip, and the plurality of hook claw components are welded on the outer circular wall surface of the hook body assembly; through mutual cooperation of a sliding connecting seat, a load-bearing supporting seat, a trigger rigging, an intelligent control box, a sliding connecting seat, a lifting hook main body structure, a central load-bearing lifting rod and a steering guide wheel, goods in the lifting hook main body structure can be blocked, and the goods are prevented from falling off from the lifting hook main body structure; through mutual cooperation of a main reset spring assembly, a driving push rod, a limiting fixing plate, a wedge-shaped driving block, an auxiliary reset spring assembly, a linkage mounting rod, a clamping lock column, an intelligent control box, a bearing supporting seat, a sliding connecting seat and an anti-off-load steel cable, automatic unhooking operation can be achieved, and the automatic unhooking effect on the lifting hook main body structure is achieved.

Description

Technical Field

[0001] This invention relates to the field of marine hook technology, specifically a multi-functional integrated ultra-large tonnage marine engineering hook. Background Technology

[0002] Offshore hooks are crucial components in offshore lifting operations, used to connect lifting equipment and the object being lifted. They are typically made of high-strength materials, possessing high load-bearing capacity and stability. They can be designed in various structural forms to meet different operational needs, such as single-hook, double-hook, or multi-hook configurations. Offshore hooks are usually made of high-strength alloy steel to meet the high load requirements of offshore operations. The design and manufacture of hooks must meet extremely high requirements for strength, durability, and safety to cope with harsh marine environments and complex operating conditions. With the development of industrial technology, the requirements for the load-bearing capacity, fatigue life, and manufacturing precision of offshore hooks are constantly increasing. Research revealed that traditional lifting hook connection structures are typically made of ordinary carbon steel or low-alloy steel. These materials have relatively low strength and toughness, making it difficult to meet the requirements of ultra-large tonnage loads. Under high loads, stress concentration easily occurs in the materials, causing the stress in local areas to exceed the material's yield strength, thus triggering plastic deformation and crack initiation. Furthermore, the structural design of traditional lifting hooks is often quite simple, lacking optimized stress distribution design. This makes the connection points prone to becoming weak points during actual use, resulting in unsatisfactory shear resistance and fatigue resistance. During hoisting operations, the hook must withstand enormous shear forces, especially when lifting and lowering heavy objects. Traditional hooks, due to limitations in materials and structure, have limited shear resistance, easily leading to deformation or damage at the connection points, thus affecting the safety and reliability of the hoisting process. Furthermore, traditional lifting hooks typically require manual hooking and unhooking operations. On one hand, manual hooking and unhooking consumes significant time and manpower, especially when lifting large or heavy loads. The complex and time-consuming process severely impacts lifting efficiency. On the other hand, manual operation requires workers to be close to the hook and the load, increasing safety risks during the lifting process. Particularly in adverse weather or sea conditions, workers may face even greater dangers, such as slipping or being struck by the load. After the lifting operation is completed, manual unhooking is required. This not only increases operation time but also increases the risk of accidents due to improper operation. Therefore, based on the above research and combined with existing technologies, a multi-functional integrated ultra-large tonnage lifting hook for marine engineering is proposed to solve the aforementioned problems. Summary of the Invention

[0003] The purpose of this invention is to provide a multifunctional integrated marine engineering ultra-large tonnage hook to solve the problems mentioned in the background art.

[0004] To achieve the above object, the present application provides the following technical solutions: A multifunctional integrated marine engineering super-tonnage hook, comprising: a hook main body structure, the hook main body structure comprising a hook body assembly, a plurality of hook claw members and a large load hook tip, the plurality of hook claw members are welded on the outer circular wall surface of the hook body assembly, the hook body assembly is made of high-strength alloy material, the top surface of the hook claw member is fixedly installed with a large load hook tip for hoisting heavy objects, the inner circular wall surface of the hook body assembly is installed with a central load bearing boom, the top surface of the central load bearing boom is connected with a fixed column assembly, the top surface of the fixed column assembly is fixedly installed with a universal joint head, the top surface of the hook body assembly is provided with a top support box assembly, a load bearing cross beam assembly is installed on the universal joint head, and the load bearing cross beam assembly is fixedly connected with the top support box assembly; An intelligent unhooking actuator is arranged on the outer circular wall surface of the central load bearing boom for automatically realizing unhooking operation; A three-dimensional rotation control mechanism is arranged on the bottom surface of the hook main body structure for rotating the hook main body structure; The intelligent unhooking actuator comprises a plurality of load bearing support seats, the plurality of load bearing support seats are fixedly installed on the outer circular wall surface of the central load bearing boom, the top surface of the load bearing support seat is provided with a sliding connection seat, the load bearing support seat and the sliding connection seat are slidably connected with an intelligent control box, the top surface of the large load hook tip is fixedly installed with two sling support seats, the two sling support seats are rotatably connected with a universal joint seat, one side of the sliding connection seat is fixedly installed with an anti-falling steel cable for preventing the goods from falling off, one end of the anti-falling steel cable is connected with one side of the universal joint seat, and the two sides of the intelligent control box are slidably connected with clamping lock columns.

[0005] Further, the intelligent unhooking execution mechanism further comprises two partition plates, both of which are fixedly installed in the interior of the intelligent control box, a linkage installation rod is slidably connected to the partition plate through an auxiliary return spring assembly, one end of the linkage installation rod is fixedly connected with one end of the clamping lock column, a wedge-shaped drive block is slidably connected in the interior of the intelligent control box, the wedge-shaped drive block is wide at the top and narrow at the bottom, a limiting fixed plate is fixedly installed in the interior of the intelligent control box, a drive push rod is fixedly installed on the bottom surface of the wedge-shaped drive block, the lower end of the drive push rod penetrates through the limiting fixed plate and extends to the outside of the limiting fixed plate, a main return spring assembly is sleeved on the outer circular wall surface of the drive push rod, the upper end of the trigger type rig penetrates through the intelligent control box and is fixedly connected with the bottom surface of the drive push rod, a plurality of guide support plates are fixedly installed on the outer circular wall surface of the central load-bearing boom, and a steering guide wheel is rotatably connected between every two guide support plates.

[0006] Further, the three-dimensional rotation control mechanism comprises a self-aligning roller bearing, which is fixedly sleeved on the outer circular wall surface of the central load-bearing boom, and is fixedly connected with the hook body assembly, a thrust self-aligning bearing assembly is fixedly installed on the outer circular wall surface of the central load-bearing boom, and is fixedly connected with the central load-bearing boom, a bottom support ring is installed on the bottom surface of the central load-bearing boom, an upper rotation bushing assembly is fixedly installed on the bottom surface of the bottom support ring, a lower rotation bushing assembly is fixedly installed on the bottom surface of the central load-bearing boom, the lower rotation bushing assembly is rotatably connected with the upper rotation bushing assembly, and a sealing end plate is installed on the bottom surface of the upper rotation bushing assembly.

[0007] Further, a stroke limiting column for limiting the movement of the wedge-shaped drive block is fixedly installed on the top surface of the wedge-shaped drive block, and the stroke limiting column is slidably connected with the intelligent control box.

[0008] Further, a plurality of support roller groups are rotatably connected in the interior of the top support box assembly, a plurality of steel wire rope guide pulleys for winding steel wire ropes are fixedly sleeved on the outer circular wall surface of the support roller groups, an upper driven gear is fixedly installed at one end of the two upper support roller groups, a lower driving gear is fixedly installed at one end of the lower support roller group, the lower driving gear is engaged with the two upper driven gears, a motor installation cover is fixedly installed on one side of the top support box assembly, and a servo drive motor for driving the rotation of the lower driving gear is installed on one side of the motor installation cover.

[0009] Further, the material of the hook body structure adopts 20CrMnMo steel, and the chemical composition of the 20CrMnMo steel is as follows: C: 0.17% to 0.23%, Si: 0.17% to 0.37%, Mn: 0.90% to 1.20%, Cr: 1.10% to 1.40%, Mo: 0.20% to 0.30%, Nb: ≤0.030%, Al: ≥0.015%, Cu: ≤0.25%, P: ≤0.025%, S: ≤0.015%, and the rest is Fe.

[0010] Further, the outer circular wall surface of the central load-bearing boom and the outer circular wall surface of the fixed column assembly are fixedly sleeved with flange support rings, and the two flange support rings are fastened by bolts.

[0011] Further, a limiting sliding groove is formed on one side of the load-bearing support seat, and two drag-reducing rollers are rotatably connected in the limiting sliding groove.

[0012] Compared with the prior art, the present application has the following beneficial effects: Through the hook body structure, the staff binds the goods with the steel wire rope and hangs the steel wire rope with the goods on the hook claw component, and through the cooperation of the sliding connection seat, the load-bearing support seat, the trigger type rigging, the intelligent control box, the sliding connection seat, the hook body structure, the central load-bearing boom and the steering guide wheel, the goods in the hook body structure can be blocked to prevent the goods from falling off the hook body structure; through the cooperation of the main reset spring assembly, the driving push rod, the limiting fixed plate, the wedge-shaped driving block, the auxiliary reset spring assembly, the linkage mounting rod, the clamping lock column, the intelligent control box, the load-bearing support seat, the sliding connection seat and the anti-falling steel cable, automatic unhooking operation can be realized, the automatic unhooking effect of the hook body structure is achieved, and lifting goods is more convenient, which helps to use the hook body structure to lift goods on the cargo ship.

[0013] Through the hook body structure, the hook body structure is casted by 20CrMnMo steel, and the 20CrMnMo steel is a kind of high-strength alloy structural steel, and the strength and toughness of the material are significantly improved by adding alloy elements such as chromium Cr and molybdenum Mo. This material can maintain good mechanical properties under high load, and is suitable for manufacturing super-tonnage offshore hooks to ensure the reliability and safety of the hook body structure under extreme working conditions. Secondly, according to the characteristics of high salinity and high humidity of the marine environment, Cr and Mo elements added to the 20CrMnMo steel can form a dense oxide film, effectively preventing the corrosion of seawater and corrosive gases, and prolonging the service life of the hook; in addition, Al is added to improve the oxidation resistance of the steel, and the corrosion resistance of the hook body structure is further enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of the three-dimensional structure of the present application; Figure 2 is a schematic view of the connection structure of the top support box assembly and the support roller group of the present application; Figure 3 is a schematic view of the connection structure of the motor mounting cover and the top support box assembly of the present application from the back; Figure 4 is a schematic view of the connection structure of the load-bearing support seat and the sliding connection seat of the present application; Figure 5 is a schematic view of the connection structure of the intelligent control box and the guide positioning hole of the present application; Figure 6 is a schematic view of the connection structure of the wedge-shaped drive block and the linkage mounting rod of the present application; Figure 7 is a schematic view of the connection structure of the upper rotary bushing assembly and the lower rotary bushing assembly of the present application from the bottom; Figure 8 is a schematic view of the connection structure of the central load-bearing boom and the lower rotary bushing assembly of the present application from the cross section. In the figure: 1, hook body structure; 2, central load-bearing boom; 3, corrosion-resistant layer; 4, hook body assembly; 5, hook jaw component; 6, large load hook tip; 7, top support box assembly; 8, intelligent unhooking actuator; 9, three-dimensional rotary control mechanism; 10, flange support ring; 11, universal joint; 12, load-bearing cross beam assembly; 13, support roller group; 14, steel wire rope guide pulley; 15, upper driven gear; 16, lower driving gear; 17, servo drive motor; 18, motor mounting cover; 19, corrosion-resistant protective cover; 20, load-bearing support seat; 21, sliding connection seat; 22, intelligent control box; 23, guide positioning hole; 24, limit sliding groove; 25, drag-reducing roller; 26, lifting appliance support seat; 27, universal connection seat; 28, trigger rigging; 29, guide support plate; 30, steering guide wheel; 31, wedge-shaped drive block; 32, limit fixing plate; 33, drive push rod; 34, main return spring assembly; 35, thrust aligning bearing; 36, clamping lock column; 37, linkage mounting rod; 38, auxiliary return spring assembly; 39, partition plate; 40, stroke limit column; 41, bottom support ring; 42, upper rotary bushing assembly; 43, lower rotary bushing assembly; 44, sealing end plate; 45, aligning roller bearing; 46, fixed column assembly; 47, anti-dropping load cable. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0016] In a typical embodiment of the present application, referring to Figures 1-8 A multifunctional integrated marine engineering super-tonnage hook includes a hook body structure 1, the hook body structure 1 includes a hook body assembly 4, a plurality of hook claw components 5, and a large load hook tip 6. The plurality of hook claw components 5 are welded to the outer circular wall surface of the hook body assembly 4. During the welding process, advanced welding technology such as narrow gap submerged arc welding is used to ensure the welding quality. After the welding is completed, non-destructive testing such as ultrasonic flaw detection and X-ray detection is performed on the welded parts to ensure that there are no cracks, pores, and other defects in the welded parts, and to ensure the connection strength of the hook claw components 5 and the hook body assembly 4.

[0017] The hook body assembly 4 is made of high-strength alloy material. The tensile strength of the hook body assembly 4 should reach or exceed 1000 MPa, the yield strength should reach or exceed 800 MPa, and the elongation after fracture should be greater than or equal to 10%. These performance indicators ensure that the hook has sufficient strength and toughness when bearing super-tonnage load, effectively preventing fracture and deformation.

[0018] The top surface of the hook claw component 5 is fixedly installed with a large load hook tip 6 for lifting heavy objects. The shape and size of the large load hook tip 6 are accurately calculated and optimized to ensure that it can firmly grasp the heavy objects during lifting and that the stress distribution is uniform when bearing load. The hook body structure 1 is designed through UG / ANSYS collaborative iteration optimization, the inside corner of the large load hook tip 6 adopts a gradual double curvature radius R120mm→R80mm, the stress concentration coefficient is ≤1.8, and a ±1.5mm tolerance compensation model is established.

[0019] The inner circular wall surface of the hook body assembly 4 is installed with a central load-bearing boom 2. The top surface of the central load-bearing boom 2 is connected with a fixed column assembly 46. The top surface of the fixed column assembly 46 is fixedly installed with a universal joint 11. The top surface of the hook body assembly 4 is provided with a top support box assembly 7. The universal joint 11 is installed with a load-bearing cross beam assembly 12. The load-bearing cross beam assembly 12 is fixedly connected with the top support box assembly 7 through bolts. An intelligent unhooking actuator 8 is arranged on the outer circular wall surface of the central load-bearing boom 2 for automatically realizing unhooking operation. A three-dimensional rotation control mechanism 9 is arranged on the bottom surface of the hook body structure 1 for rotating the hook body structure 1. The intelligent unhooking execution mechanism 8 comprises a plurality of load-bearing support seats 20, which are fixedly installed on the outer circumferential wall surface of the central load-bearing boom 2. The top surface of each load-bearing support seat 20 is provided with a sliding connection seat 21. The load-bearing support seat 20 and the sliding connection seat 21 are slidingly connected with an intelligent control box 22. The top surface of each load-bearing support seat 20 and the sliding connection seat 21 is provided with a guide positioning hole 23. The intelligent control box 22 is slidingly connected with the guide positioning hole 23. The top surface of the large load hook tip 6 is fixedly installed with two sling support seats 26. The two sling support seats 26 are rotatably connected with a universal joint seat 27 through a rotating shaft. One side of the sliding connection seat 21 is fixedly installed with an anti-falling steel cable 47 for preventing the goods from falling off. One end of the anti-falling steel cable 47 is connected with one side of the universal joint seat 27 through a universal joint. The two sides of the intelligent control box 22 are slidingly connected with a clamping lock column 36. The inner side of the hook claw component 5 is installed with a trigger type rigging 28 for triggering the clamping lock column 36.

[0020] The intelligent unhooking execution mechanism 8 further comprises two partition plates 39, which are fixedly installed in the interior of the intelligent control box 22. The partition plate 39 is slidingly connected with a linkage installation rod 37 through an auxiliary reset spring assembly 38. One end of the linkage installation rod 37 is fixedly connected with one end of the clamping lock column 36. The auxiliary reset spring assembly 38 is sleeved on the outer circumferential wall surface of the linkage installation rod 37. One end of the auxiliary reset spring assembly 38 is fixedly connected with one end of the clamping lock column 36. The other end of the auxiliary reset spring assembly 38 is fixedly connected with one side of the partition plate 39. The cooperation of the linkage installation rod 37 and the auxiliary reset spring assembly 38 enables the intelligent control box 22 to slide on the clamping lock column 36. The linkage installation rod 37 can provide the clamping lock column 36 with the required force for movement.

[0021] The interior of the intelligent control box 22 is slidingly connected with a wedge-shaped drive block 31, which is wide at the top and narrow at the bottom. A limiting fixed plate 32 is fixedly installed in the interior of the intelligent control box 22. The bottom surface of the wedge-shaped drive block 31 is fixedly installed with a drive push rod 33. The lower end of the drive push rod 33 penetrates through the limiting fixed plate 32 and extends to the outside of the limiting fixed plate 32. The outer circumferential wall surface of the drive push rod 33 is sleeved with a main reset spring assembly 34, which can provide the wedge-shaped drive block 31 with the required force for resetting. One end of the main reset spring assembly 34 is fixedly connected with the bottom surface of the wedge-shaped drive block 31. The other end of the main reset spring assembly 34 is fixedly connected with the top surface of the limiting fixed plate 32. The upper end of the trigger type rigging 28 penetrates through the intelligent control box 22 and is fixedly connected with the bottom surface of the drive push rod 33.

[0022] When the cargo is attached to the main structure 1 of the hook, the wire rope on the cargo causes the trigger sling 28 to move downward. The downward movement of the trigger sling 28 drives the wedge-shaped drive block 31 to move downward through the drive push rod 33. The downward movement of the wedge-shaped drive block 31 presses against the locking pin 36, which causes the two locking pins 36 to move outward, thereby locking the sliding connecting seat 21 onto the load-bearing support seat 20. The anti-detachment steel cable 47 can restrict the cargo on the main structure 1 of the hook to prevent the cargo from falling off. Once the goods are moved to the designated position, they are supported by the ground. At this point, the steel wire rope on the goods releases the trigger rigging 28, which causes the main return spring assembly 34 to drive the wedge drive block 31 to move upward. As the wedge drive block 31 moves upward, the two locking pins 36 move inward under the action of the auxiliary return spring assembly 38, losing the locking of the two locking pins 36. The intelligent control box 22 disengages from the sliding connecting seat 21 and the load-bearing support seat 20, and then the sliding connecting seat 21 slides off the load-bearing support seat 20, achieving automatic unhooking.

[0023] Several guide support plates 29 are fixedly installed on the outer circular wall of the central load-bearing rod 2. A steering guide wheel 30 is rotatably connected between every two guide support plates 29 via a rotating shaft. The steering guide wheel 30 can guide the trigger-type rigging 28.

[0024] In this method, when lifting goods using the hook main structure 1, the workers tie the goods with wire ropes and attach the wire ropes to the hook claw component 5. The workers place the sliding connecting seat 21 on the top surface of the load-bearing support seat 20. At this time, the goods are on the ground and the trigger sling 28 is not under force. The workers move the intelligent control box 22 so that the intelligent control box 22 passes through the guide positioning hole 23 on the load-bearing support seat 20 and the sliding connecting seat 21 until the intelligent control box 22 is moved above the sliding connecting seat 21. When the hook main structure 1 and the central load-bearing lifting rod 2 lift, the goods leave the ground and the wire rope on it is pulled by force, which causes the trigger sling 28 to move under the guidance of the steering guide wheel 30. The steering guide wheel 30 can change the direction of movement of the trigger sling 28. The downward movement of the trigger sling 28 causes the drive push rod 33 and the wedge drive block 31 to move downward, which in turn compresses the main return spring assembly 34. The downward movement of the wedge drive block 31 will squeeze the two linkage mounting rods 37. The linkage mounting rods 37 are squeezed, which causes the locking pin 36 to move outward, which in turn stretches the auxiliary return spring assembly 38. After the locking pin 36 moves outward, the intelligent control box 22 cooperates with the two locking pins 36 to lock the sliding connecting seat 21 and the anti-detachment steel cable 47 above the load-bearing support seat 20. At this time, the anti-detachment steel cable 47 can block the goods inside the hook main structure 1 and prevent the goods from falling off the hook main structure 1. After the goods are moved to the predetermined position, the goods fall on the ground, the steel wire rope bound to the goods is no longer under stress, the force of the main reset spring assembly 34 causes the driving push rod 33 to move upward on the limiting fixed plate 32, and the upward movement of the driving push rod 33 also causes the wedge-shaped driving block 31 to move upward. After the wedge-shaped driving block 31 moves upward, the force of the auxiliary reset spring assembly 38 causes the linkage mounting rod 37 to drive the clamping lock post 36 to move inward, which causes the clamping lock post 36 to move to the inside of the intelligent control box 22. The intelligent control box 22 moves downward under the action of gravity to disengage from the guide positioning hole 23 on the load-bearing support seat 20 and the sliding connection seat 21. After the intelligent control box 22 and the clamping lock post 36 are removed, the sliding connection seat 21 and the anti-falling steel cable 47 will slide off the load-bearing support seat 20, thereby realizing automatic unhooking operation and achieving the effect of automatic unhooking of the hook main body structure 1. It is more convenient to lift goods, which helps to use the hook main body structure 1 to lift goods on the ship.

[0025] The three-dimensional rotation control mechanism 9 includes a self-aligning roller bearing 45 fixedly sleeved on the outer circular wall surface of the central load-bearing boom 2, and the self-aligning roller bearing 45 is fixedly connected with the hook body assembly 4. The outer circular wall surface of the central load-bearing boom 2 is fixedly installed with a thrust self-aligning bearing 35, and the thrust self-aligning bearing 35 is fixedly connected with the central load-bearing boom 2. Through cooperation of the steel wire rope with the self-aligning roller bearing 45 and the thrust self-aligning bearing 35, the hook main body structure 1 can be rotated on the central load-bearing boom 2.

[0026] The bottom surface of the central load-bearing boom 2 is installed with a bottom support ring 41 through bolts, the bottom surface of the bottom support ring 41 is fixedly installed with an upper rotary bushing assembly 42, the bottom surface of the central load-bearing boom 2 is fixedly installed with a lower rotary bushing assembly 43, the lower rotary bushing assembly 43 is rotationally connected with the upper rotary bushing assembly 42, and the bottom surface of the upper rotary bushing assembly 42 is installed with a sealing end plate 44 through bolts. The upper rotary bushing assembly 42 and the lower rotary bushing assembly 43 cooperate to support the rotation of the hook main body structure 1, and the sealing end plate 44 can fasten the lower rotary bushing assembly 43.

[0027] Preferably, through the setting of the thrust self-aligning bearing 35, the thrust self-aligning bearing 35 supports the hook body structure 1 and the central load-bearing boom 2, the central load-bearing boom 2 is installed with the self-aligning roller bearing 45, the central load-bearing boom 2 penetrates through the center of the thrust self-aligning bearing 35, the self-aligning roller bearing 45 and the hook body assembly 4, the hook body structure 1 is rotated relative to the central load-bearing boom 2 by controlling the steel wire rope, the hook body structure 1 rotates around the central load-bearing boom 2 to make the hook body structure 1 rotate, the rotation of the hook body structure 1 drives the upper rotating bushing assembly 42 to rotate through the bottom support ring 41, the rotation of the upper rotating bushing assembly 42 rotates around the lower rotating bushing assembly 43, the cooperation of the upper rotating bushing assembly 42 and the lower rotating bushing assembly 43 improves the stability of the rotation of the central load-bearing boom 2, and the rotation control of the hook body structure 1 is realized.

[0028] The top surface of the wedge-shaped driving block 31 is fixedly installed with a stroke limiting column 40 for limiting the movement of the wedge-shaped driving block 31, and the stroke limiting column 40 is in sliding connection with the intelligent control box 22.

[0029] Preferably, through the setting of the wedge-shaped driving block 31, the movement of the wedge-shaped driving block 31 drives the stroke limiting column 40 to move on the intelligent control box 22, the stroke limiting column 40 can limit the movement of the wedge-shaped driving block 31, and the stability of the movement of the wedge-shaped driving block 31 in the intelligent control box 22 is improved.

[0030] The inside of the top support box assembly 7 is rotatably connected with a plurality of support roller groups 13 through bearings, the included angle between the three support roller groups 13 is 120 degrees, the outer circular wall surface of the support roller group 13 is fixedly sleeved with a plurality of steel wire rope guide pulleys 14 for winding the steel wire rope, one end of the two upper support roller groups 13 is fixedly installed with an upper driven gear 15, one end of the lower support roller group 13 is fixedly installed with a lower driving gear 16, the lower driving gear 16 is in meshing connection with the two upper driven gears 15, one side of the top support box assembly 7 is fixedly installed with a motor mounting cover 18, one side of the motor mounting cover 18 is installed with a servo drive motor 17 for driving the rotation of the lower driving gear 16, one end of the driving shaft of the servo drive motor 17 penetrates through the motor mounting cover 18 and is fixedly connected with one side of the lower driving gear 16.

[0031] The rotation of the lower driving gear 16 is driven by the servo drive motor 17, the rotation of the lower driving gear 16 drives the rotation of the lower support roller group 13, the rotation of the lower driving gear 16 cooperates with the upper driven gear 15 to drive the rotation of the two upper support roller groups 13, the rotation of the plurality of support roller groups 13 drives the rotation of the steel wire rope guide pulley 14, the rotation of the steel wire rope guide pulley 14 drives the movement of the steel wire rope, so as to lift the cargo by the hook body structure 1 and the central load-bearing boom 2, one side of the motor mounting cover 18 is installed with a corrosion-proof protective cover 19 through bolts, and the corrosion-proof protective cover 19 can isolate the servo drive motor 17 from seawater.

[0032] Preferably, through the support roller set 13 arranged, the workers will be wound on the steel wire guide pulley 14 on the support roller set 13, workers in the lifting of goods start servo drive motor 17, servo drive motor 17 drive shaft rotation driven lower gear 16 rotation, driven lower gear 16 rotation of two upper gear 15 rotation, driven lower gear 16 and two upper gear 15 rotation will drive the support roller set 13 and the steel wire guide pulley 14 on the rotation, through three sets of support roller set 13 and steel wire guide pulley 14 with the pulley set on the lifting equipment, that is, the use of hook main structure 1 and central load boom 2 upward movement, hook main structure 1 and central load boom 2 upward movement driven on the goods upward movement, achieve the lifting effect of goods.

[0033] As a preferred embodiment in this embodiment, please refer to Figures 1-8 , the material of the hook main structure 1 adopts 20CrMnMo steel, the chemical composition of 20CrMnMo steel is: C: 0.17%~0.23%, Si: 0.17%~0.37%, Mn: 0.90%~1.20%, Cr: 1.10%~1.40%, Mo: 0.20%~0.30%, Nb: ≤0.030%, Al: ≥0.015%, Cu: ≤0.25%, P: ≤0.025%, S: ≤0.015%, the rest is Fe, by accurately controlling the content of each element, ensure that the material has good welding performance and corrosion resistance at the same time.

[0034] Preferably, 20CrMnMo steel is a kind of high strength alloy structural steel, by adding chromium Cr, molybdenum Mo and other alloy elements, significantly improve the strength and toughness of the material. This material can maintain good mechanical properties under high load, suitable for manufacturing super tonnage offshore hook, ensure the reliability and safety of the hook main structure 1 under extreme conditions; The offshore environment has the characteristics of high salinity and high humidity, which puts higher requirements on the corrosion resistance of the hook main structure 1, the Cr and Mo elements added in 20CrMnMo steel can form a dense oxide film, effectively prevent the corrosion of seawater and corrosive gas, prolong the service life of the hook; And the addition of Al can improve the oxidation resistance of steel, further enhance the corrosion resistance of the hook main structure 1; In addition, 20CrMnMo steel has good welding performance, and is not easy to produce cracks and defects in the welding process, which is very important for the manufacture and maintenance of the hook main structure 1, especially in the welding process of the hook body assembly 4 and the hook jaw component 5, which can ensure the strength and reliability of the welded joint, the addition of titanium Ti and niobium Nb can refine the grain, improve the toughness of the welding heat affected zone, and reduce the risk of welding cracks.

[0035] In the process of casting, by strictly controlling the carbon C content between 0.17%~0.23%, ensure the hook has good toughness while high strength, avoid the brittle increase due to the high carbon content, by controlling the content of sulfur S and phosphorus P, reduce the negative impact of these impurity elements on the material performance, improve the purity and reliability of the hook.

[0036] The casting method of the hook body structure 1 is as follows: Step one: first heat the 20CrMnMo steel blank to the appropriate temperature range, then perform forging on the large forging machine, strictly control the forging ratio and forging temperature during the forging process, ensure the internal organization of the material is uniform and dense, improve the mechanical properties of the material. After forging, the hook body assembly 4 is annealed to eliminate the forging stress and improve the cutting performance of the material.

[0037] Step two: after forging and annealing treatment, the hook body assembly 4 is machined, high-precision numerical control machine tools are used to process the hook body assembly 4 to ensure that the size accuracy and surface roughness of each part meet the design requirements. During the processing, the key parts such as the large load hook tip 6 and the connecting part of the hook claw component 5 are processed to ensure the size accuracy and shape accuracy. After processing, the overall size detection and appearance inspection of the hook body structure 1 are carried out to ensure the product quality.

[0038] Step three: in order to further improve the mechanical properties of the hook body structure 1, it is subjected to quenching and tempering heat treatment. The hook body structure 1 is heated to quenching temperature, kept for a certain time, then quenched, and then tempered at tempering temperature. By accurately controlling the heat treatment process parameters, the hook body structure 1 obtains a good combination of high strength and high toughness, which meets the use requirements of super large tonnage hook in offshore engineering.

[0039] The hook body structure 1 is coated with an anti-corrosion layer 3, which includes an epoxy zinc-rich primer, an epoxy micaceous iron intermediate paint, and a fluorocarbon topcoat. The thickness of the fluorocarbon topcoat is controlled between 15-30 microns, which can ensure sufficient protective performance without affecting the size accuracy and mechanical properties of the hook. In this way, the zinc-rich primer contains a large amount of zinc powder, which will oxidize preferentially to steel in a corrosive environment, forming a dense zinc corrosion product layer, acting as a sacrificial anode protection, effectively preventing seawater, salt mist and other corrosive media from corroding the hook body structure 1. Mica iron oxide has a flaky structure, which can form a labyrinth effect in the coating, prolonging the penetration path of the corrosive medium and further improving the permeability and corrosion resistance of the coating. The multi-layer structure design of the epoxy zinc-rich primer, the epoxy cloud iron intermediate paint and the fluorocarbon topcoat forms a complete protection system through mutual coordination between the layers. The primer has strong adhesion to the substrate, the intermediate paint provides good filling and transition, and the topcoat provides excellent surface protection performance, ensuring that the coating remains stable under complex mechanical stress and environmental conditions.

[0040] The outer cylindrical wall surface of the central load-bearing boom 2 and the outer cylindrical wall surface of the fixed column assembly 46 are fixedly sleeved with flange support rings 10, the two flange support rings 10 are fastened through bolts, one side of the load-bearing support base 20 is provided with a limiting sliding groove 24, the inside of the limiting sliding groove 24 is rotationally connected with two drag-reducing rollers 25 through a rotating shaft, and the load-bearing support base 20 can be conveniently slid off along the load-bearing support base 20 through the drag-reducing rollers 25.

[0041] By setting the fixed column assembly 46, the staff places the fixed column assembly 46 on the top surface of the central load-bearing boom 2, which makes the flange support ring 10 on the fixed column assembly 46 abut against the flange support ring 10 on the central load-bearing boom 2, and then the staff fastens the two flange support rings 10 with bolts, so as to assemble the top support box assembly 7 and the hook main body structure 1 together. Through the setting of the drag-reducing rollers 25, the drag-reducing rollers 25 can reduce the friction between the sliding connection seat 21 and the load-bearing support base 20, and facilitate the sliding connection seat 21 to separate from the load-bearing support base 20.

[0042] Working principle: when in use, the staff binds the goods with a steel wire rope, ensures that the goods are firmly bound, prevents sliding or falling during hoisting, hangs the steel wire rope with goods on the hook claw component 5, ensures that the connection between the steel wire rope and the hook claw component 5 is firm and reliable, the staff places the sliding connection seat 21 on the top surface of the load-bearing support base 20, ensures that the sliding connection seat 21 is aligned with the load-bearing support base 20, moves the intelligent control box 22 to pass through the guide positioning holes 23 on the load-bearing support base 20 and the sliding connection seat 21, and then moves the intelligent control box 22 to the upper side of the sliding connection seat 21. Secondly, start the lifting equipment, the hook main structure 1 and the central load-bearing boom 2 start lifting. The goods leave the ground, the steel wire rope is pulled to trigger the trigger rigging 28, the trigger rigging 28 moves downward, and the wedge-shaped driving block 31 is driven to move downward by the driving push rod 33. When the wedge-shaped driving block 31 moves downward, the clamping lock column 36 is extruded, so that the two clamping lock columns 36 move outward, and the sliding connection seat 21 is clamped on the load-bearing support seat 20. At this time, the anti-falling steel cable 47 limits the goods on the hook main structure 1 to prevent the goods from falling off, and the hook main structure 1 is rotated relative to the central load-bearing boom 2 by controlling the steel wire rope. When the hook main structure 1 rotates around the central load-bearing boom 2, the upper rotating bushing assembly 42 is driven to rotate by the bottom support ring 41, the upper rotating bushing assembly 42 rotates around the lower rotating bushing assembly 43, and the rotation control of the hook main structure 1 is realized; Next, the workers move the goods to the predetermined position and place them on the ground, the goods are supported by the ground, the steel wire rope releases the trigger rigging 28, and the main reset spring assembly 34 drives the wedge-shaped driving block 31 to move upward. When the wedge-shaped driving block 31 moves upward, the auxiliary reset spring assembly 38 drives the clamping lock column 36 to move inward and lose the clamping. The intelligent control box 22 moves downward under the action of gravity, and the sliding connection seat 21 and the anti-falling steel cable 47 fall off the load-bearing support seat 20, so as to realize automatic unhooking. After the goods are completely unloaded, the hook main structure 1 returns to the initial position and is ready for the next hoisting operation; In addition, the appearance of the hook main structure 1 is checked regularly, whether the welding position, the connection position of the large load hook tip 6 and the hook jaw component 5 have cracks, wear and other defects, and the integrity of the coating is checked regularly. If there is damage or wear, repair in time to ensure the protective performance of the coating.

[0043] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-functional integrated ocean engineering super-tonnage hook, characterized in that, The utility model relates to a lifting hook structure, including: The hook body component is made of high-strength alloy material, the top surface of the hook claw component is fixedly installed with a large load hook tip for hoisting heavy objects, the inner circular wall surface of the hook body component is installed with a central load bearing derrick, the top surface of the central load bearing derrick is connected with a fixed column assembly, the top surface of the fixed column assembly is fixedly installed with a universal joint head, the top surface of the hook body component is provided with a top support box assembly, a load bearing crossbeam assembly is installed on the universal joint head, and the load bearing crossbeam assembly is fixedly connected with the top support box assembly; A three-dimensional rotation control mechanism is arranged on the bottom surface of the lifting hook structure to rotate the lifting hook structure. The intelligent unhooking execution mechanism further includes two partition plates, both of which are fixedly installed in the interior of the intelligent control box, and a linkage mounting rod is slidably connected to the partition plates through an auxiliary reset spring assembly, one end of the linkage mounting rod is fixedly connected to one end of the clamping lock column, a wedge-shaped drive block is slidably connected in the interior of the intelligent control box, the wedge-shaped drive block is wide at the top and narrow at the bottom, a limiting fixed plate is fixedly installed in the interior of the intelligent control box, a drive push rod is fixedly installed on the bottom surface of the wedge-shaped drive block, the lower end of the drive push rod penetrates through the limiting fixed plate and extends to the outside of the limiting fixed plate, a main reset spring assembly is sleeved on the outer circular wall surface of the drive push rod, the upper end of the trigger cable penetrates through the intelligent control box and is fixedly connected to the bottom surface of the drive push rod, a plurality of guide support plates are fixedly installed on the outer circular wall surface of the central load bearing derrick, and a steering guide wheel is rotatably connected between every two guide support plates. ​ 2. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 1, characterized in that: ​ 3. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 1, characterized in that: The three-dimensional rotation control mechanism comprises a self-aligning roller bearing fixedly sleeved on the outer wall surface of the central load-bearing boom, the self-aligning roller bearing is fixedly connected with the hook body assembly, the outer wall surface of the central load-bearing boom is fixedly installed with a thrust self-aligning bearing, the thrust self-aligning bearing is fixedly connected with the central load-bearing boom, the bottom surface of the central load-bearing boom is installed with a bottom support ring, the bottom surface of the bottom support ring is fixedly installed with an upper rotary bushing assembly, the bottom surface of the central load-bearing boom is fixedly installed with a lower rotary bushing assembly, the lower rotary bushing assembly is rotationally connected with the upper rotary bushing assembly, and the bottom surface of the upper rotary bushing assembly is installed with a sealing end plate.

4. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 2, characterized in that: The top surface of the wedge-shaped driving block is fixedly installed with a stroke limiting column for limiting the movement of the wedge-shaped driving block, and the stroke limiting column is in sliding connection with the intelligent control box.

5. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 1, characterized in that: A plurality of support roller groups are rotationally connected inside the top support box assembly, a plurality of steel wire rope guide pulleys for winding the steel wire rope are fixedly sleeved on the outer wall surface of the support roller groups, one end of the two upper support roller groups is fixedly installed with an upper driven gear, one end of the lower support roller group is fixedly installed with a lower driving gear, the lower driving gear is in meshing connection with the two upper driven gears, a motor mounting cover is fixedly installed on one side of the top support box assembly, and a servo driving motor for driving the rotation of the lower driving gear is installed on one side of the motor mounting cover.

6. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 1, characterized in that: The material of the hook body structure is 20CrMnMo steel, and the chemical composition of the 20CrMnMo steel is as follows: C: 0.17% to 0.23%, Si: 0.17% to 0.37%, Mn: 0.90% to 1.20%, Cr: 1.10% to 1.40%, Mo: 0.20% to 0.30%, Nb: ≤0.030%, Al: ≥0.015%, Cu: ≤0.25%, P: ≤0.025%, S: ≤0.015%, and the rest is Fe.

7. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 1, characterized in that: The outer wall surface of the central load-bearing boom and the outer wall surface of the fixed column assembly are fixedly sleeved with flange support rings, and the two flange support rings are fastened through bolts.

8. A multi-functional integrated ocean engineering super-large tonnage hook according to claim 1, characterized in that: A limiting sliding groove is formed in one side of the load-bearing support seat, and two drag reduction rollers are rotationally connected inside the limiting sliding groove.

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