Large-tonnage deepwater square block hoisting sling and hoisting method thereof

Abstract

The invention discloses a large-tonnage deepwater square block hoisting sling and a hoisting method thereof, and belongs to the technical field of hoisting slings, the large-tonnage deepwater square block hoisting sling comprises an upper-layer beam body and a lower-layer beam body, the lower-layer beam body is horizontally and rotatably mounted on the upper-layer beam body, and the upper-layer beam body is provided with a rotating mechanism for driving the lower-layer beam body to rotate; the lower-layer beam body is provided with a plurality of groups of hoisting mechanisms, each hoisting mechanism comprises a hoisting seat, a hoisting driving device and a hoisting rigging, the hoisting seats are matched with the lower-layer beam body in a sliding manner in the length direction of the lower-layer beam body, and the hoisting driving devices are used for driving the hoisting seats to slide; and the hoisting rigging is mounted on the hoisting seat and is used for hoisting the workpiece. The hoisting device has the effects that the lower-layer hoisting beam can be conveniently and rapidly moved to the position where different prefabricated square blocks can be conveniently hoisted, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of lifting slings, in particular to a large-tonnage deep-water block lifting sling and a lifting method thereof. Background Art

[0002] With the rapid development of my country's economy, the demand for marine engineering construction is increasing. Modular construction has been more and more widely used in marine engineering construction in recent years. However, due to the differences in structure, volume, weight and size of modular prefabricated blocks, higher requirements are also put forward for lifting.

[0003] In the prior art, the modular prefabricated block lifting structure usually includes an upper lifting beam and a lower lifting beam installed at the bottom of the upper lifting beam, wherein a plurality of lifting nodes are arranged on the top of the upper lifting beam to ensure the stability of the upper lifting beam during lifting, and the lower lifting beam can move horizontally relative to the upper lifting beam through auxiliary lifting equipment, thereby facilitating the adjustment of the lifting point of the lower lifting beam according to different lifting objects.

[0004] With respect to the above-mentioned prior art, the method of moving the lower hanging beam by auxiliary lifting equipment is not convenient for quickly moving the lower hanging beam to the position for hoisting different prefabricated blocks, and the working efficiency is low. Summary of the invention

[0005] In order to facilitate the rapid movement of the lower lifting beam to a position convenient for lifting different prefabricated blocks and improve work efficiency, the present application provides a large-tonnage deep-water block lifting sling.

[0006] In the first aspect, the present application provides a large-tonnage deepwater block lifting sling, which adopts the following technical solution: A large-tonnage deep-water block lifting sling comprises an upper beam and a lower beam, wherein the lower beam is horizontally rotatably installed on the upper beam, and the upper beam is provided with a rotating mechanism for driving the lower beam to rotate; the lower beam is provided with multiple sets of lifting mechanisms, and the lifting mechanisms include a lifting seat, a lifting drive device and a lifting rigging, the lifting seat is slidably matched with the lower beam along the length direction of the lower beam, the lifting drive device is used to drive the lifting seat to slide, and the lifting rigging is installed on the lifting seat and used to lift the workpiece.

[0007] By adopting the above technical scheme, when lifting workpieces, i.e. prefabricated blocks, of different structures, volumes, weights or sizes, the lifting seat is driven to slide by the lifting drive device, and the lower beam is driven to rotate by the rotating mechanism, so that the rigging installed on the lifting seat can be quickly moved to the position where different prefabricated blocks are to be lifted. During the movement of the lifting seat, there is no need to drive the lower beam or the lifting seat by additional lifting equipment. The operation of moving the lifting seat to the position where different prefabricated blocks are to be lifted is convenient and fast, which is conducive to improving work efficiency.

[0008] Optionally, the rotating mechanism includes a rotating motor, a reduction gear box, an active synchronous wheel and a driven synchronous wheel. The active synchronous wheel is rotatably installed on the upper beam body. The rotating motor drives the active synchronous wheel to rotate through the reduction gear box. The driven synchronous wheel is coaxially fixedly installed on the lower beam body. The driven synchronous wheel is rotatably installed on the upper beam body and meshes with the active synchronous wheel.

[0009] By adopting the above technical solution, when the rotating motor drives the active synchronous wheel to rotate through the reduction gear box, the driven synchronous wheel drives the lower beam body to rotate together. The structure in which the rotating motor drives the lower beam body to rotate is convenient and fast, and the setting of the reduction gear box is conducive to increasing the torque, thereby ensuring the stability of the lower beam body during rotation.

[0010] Optionally, the lower beam body is provided with a recovery component for recovering the lifting rigging, the recovery component includes a recovery frame, a recovery motor, a recovery wheel and a recovery rope, the recovery frame is fixedly installed on the lower beam body, the recovery wheel is rotatably installed on the recovery frame, the recovery motor is used to drive the recovery wheel to rotate around its own axis, and the recovery rope is wound around the recovery wheel.

[0011] By adopting the above technical solution, when lifting the workpiece, i.e. the prefabricated block, one end of the recovery rope is fixedly installed on the lifting rigging in advance, and after the workpiece is lifted to the designated position and the connection between the lifting rigging, the workpiece and the lifting seat is released, the recovery motor drives the recovery wheel to rotate so that the recovery rope can realize the recovery of the lifting rigging, which is convenient and fast.

[0012] Optionally, the lifting drive device includes a lifting hydraulic cylinder, one end of the lifting hydraulic cylinder is installed on the lower beam body, and the other end is installed on the lifting seat, the lower beam body has a sliding plate, the lifting seat is slidably matched with the sliding plate, and the lifting seat is provided with a reinforcement mechanism fixed to the lower beam body, the reinforcement mechanism includes two reinforcement rods arranged opposite to each other and a reinforcement drive assembly, the reinforcement rods are respectively located on both sides of the sliding plate, and the reinforcement drive assembly is used to drive the two reinforcement rods to move toward or away from each other.

[0013] By adopting the above technical solution, after the lifting hydraulic cylinder drives the lifting seat to move along the sliding plate, the two reinforcement rods are driven by the reinforcement drive component to move in a direction close to each other until they are close to the sliding plate. The two reinforcement rods further limit the position of the lifting seat, which is beneficial to further ensure the stability of the position of the lifting seat after movement.

[0014] Optionally, the reinforcement drive assembly includes a reinforcement hydraulic cylinder, a reinforcement active rod, a reinforcement sleeve and a reinforcement connecting rod. The two reinforcement rods are slidably engaged with the lifting seat in the vertical direction. Two reinforcement connecting rods and reinforcement sleeves are each provided corresponding to the reinforcement rod. One end of the reinforcement connecting rod is rotatably connected to the reinforcement rod, and the other end is rotatably connected to one of the reinforcement sleeves. Both reinforcement sleeves are sleeved and slidably engaged with the reinforcement active rod. The reinforcement hydraulic cylinder is horizontally installed on the lifting seat and is used to drive the reinforcement active rod to move toward or away from the sliding plate.

[0015] By adopting the above technical solution, when the reinforced hydraulic cylinder drives its own piston rod to move, the reinforced active rod drives the two reinforced rods to move towards or away from each other through the reinforced sleeve and the reinforced connecting rod. The setting of the reinforced hydraulic cylinder makes the movement of the two reinforced rods convenient and stable.

[0016] Optionally, one side of the sliding plate in the width direction is provided with a plurality of grooves evenly distributed along its length direction, and the active connecting rod is fixedly connected with a fixing rod on the side close to the sliding plate, and when the two reinforcement rods are pressed against both sides of the sliding plate, the fixing rod is inserted into one of the grooves.

[0017] By adopting the above technical solution, the setting of the groove is beneficial to reducing the overall deadweight of the sling, further facilitating the lifting and transportation of the workpiece, and on the other hand, through cooperation with the fixed rod, it is beneficial to further limit the position of the lifting seat, thereby ensuring the stability of the position of the lifting seat.

[0018] Optionally, a connecting ring is fixedly installed on the end of the lifting sling, and the lifting seat is provided with a connecting assembly, which includes a connecting hydraulic cylinder and a connecting shaft. The connecting hydraulic cylinder is horizontally fixedly installed on the lifting seat, and a connecting groove is opened at the bottom of the lifting seat. The connecting shaft is located in the connecting groove and fixedly installed on the piston rod of the connecting hydraulic cylinder. The connecting shaft passes through the lifting seat and slides with the lifting seat, and the connecting shaft is plug-fitted with the connecting ring.

[0019] By adopting the above technical solution, when the connecting hydraulic cylinder drives its own piston rod to move so that the connecting shaft is inserted into or detached from the connecting ring, the connection or disconnection between the lifting seat and the lifting rigging can be achieved, which is convenient and fast. At the same time, the setting of the connecting groove makes it easy to ensure the stability of the position when the connecting ring and the connecting shaft are fixed.

[0020] Optionally, a locking assembly is provided on the side of the lifting seat away from the connected hydraulic cylinder, the locking assembly includes a locking ring, a locking wedge block and a locking spring, the locking ring is fixedly installed on the lifting seat, the locking wedge block is radially penetrated by the locking ring and slidably fitted with the locking ring, the locking spring is installed between the locking wedge block and the locking ring, the locking spring applies an elastic force to the locking wedge block to move toward the axis of the locking ring, the wedge surface of the locking wedge block is located on the side of the locking wedge block facing the lifting seat; a positioning assembly is provided at one end of the connecting shaft, the positioning assembly includes a positioning rod and a positioning head, the positioning rod is fixedly connected to one end of the connecting shaft, the diameter of the positioning rod is smaller than the diameter of the connecting shaft, and the positioning head is fixedly connected to the end of the positioning rod away from the connecting shaft.

[0021] By adopting the above technical solution, when the connecting hydraulic cylinder drives the connecting shaft to move so that the positioning head passes through the positioning ring and the positioning wedge block contacts the side of the positioning head facing the connecting shaft, the positioning wedge block further limits the position of the positioning head, which is beneficial to further ensure the stability of the position of the connecting shaft.

[0022] Optionally, the positioning assembly also includes a movable head and a movable spring. The movable head is sleeved and slidably engaged with the positioning rod. Both ends of the movable head close to and away from the connecting shaft are provided with arc-shaped guide surfaces. The movable spring is arranged between the movable head and the connecting shaft. The movable spring applies an elastic force to the movable head to move away from the positioning head. The positioning head is provided with a movable groove on the side facing the connecting shaft for accommodating the movable head.

[0023] By adopting the above technical solution, when releasing the fixation of the lifting rigging, the connecting shaft is driven to move in the direction close to the locking ring by connecting the hydraulic cylinder, so that when the locking wedge block is located on the side of the movable head away from the positioning head, the connecting shaft is driven to move in the direction away from the locking ring by connecting the hydraulic cylinder. At this time, the locking wedge block drives the movable head so that the movable head is located in the movable groove. The locking wedge block moves in the direction away from the axis of the connecting shaft driven by the arc-shaped guide surface, thereby releasing the fixation of the connecting shaft. In the process of releasing the fixation of the connecting shaft, there is no need to apply additional force, and it can be released by continuing to drive the connecting hydraulic cylinder, which is convenient and fast.

[0024] In the second aspect, the present application provides a large-tonnage deep-water block loading method based on the above-mentioned large-tonnage deep-water block loading sling, adopting the following technical solution: A method for lifting a large-tonnage deepwater block comprises the following specific steps: S1, installing a lifting sling on a workpiece to be lifted; S2, quickly moving the lifting seat to a position convenient for connection with the lifting sling by rotating a lower beam and moving a lifting seat along the length direction of the lower beam; S3, after installing the lifting sling on the lifting seat, lifting and transporting the upper beam, and lowering the workpiece to be lifted after the workpiece to be lifted is moved to the top of the lifting position together; S4, after the workpiece to be lifted is lowered to the lifting position, releasing the connection between the lifting seat and the lifting sling; S5, re-lifting the upper beam and recovering the lifting sling; S6, repeating steps S1-S5, and completing the construction after all the workpieces to be lifted are lifted.

[0025] By adopting the above technical solution, during the process of lifting workpieces, i.e. prefabricated blocks, of different structures, volumes, weights or sizes, it is sufficient to drive the lower beam to rotate and the lifting seat to slide, without the need to drive the lower beam or the lifting seat through additional lifting equipment. The operation of moving the lifting seat to the position for lifting different prefabricated blocks is convenient and quick, which is conducive to improving work efficiency.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the movement of the lifting seat, there is no need to drive the lower lifting beam or the lifting seat through additional lifting equipment. The lifting seat can be driven to slide through the lifting drive device, and the lower beam body can be driven to rotate through the rotating mechanism. The lifting seat can be moved to the position for lifting different prefabricated blocks, which is convenient and fast, and is conducive to improving work efficiency.

[0027] 2. When lifting the workpiece, i.e. the prefabricated block, one end of the recovery rope is fixedly installed on the lifting rigging in advance. After the workpiece is lifted to the designated position and the connection between the lifting rigging, the workpiece and the lifting seat is released, the recovery motor drives the recovery wheel to rotate so that the recovery rope can realize the recovery of the lifting rigging, which is convenient and fast.

[0028] 3. When the connecting hydraulic cylinder drives its own piston rod to move so that the connecting shaft is inserted into or separated from the connecting ring, the connection or disconnection between the lifting seat and the lifting rigging can be realized, which is convenient and fast. At the same time, the setting of the connecting groove is convenient to ensure the stability of the position when the connecting ring and the connecting shaft are fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view schematic diagram of the hoisting of the overall structure in the embodiment of the present application.

[0030] Figure 2 It is a three-dimensional schematic diagram of the overall structure in the embodiment of the present application.

[0031] Figure 3It is a schematic diagram of the main structure of the rotating mechanism in the embodiment of the present application.

[0032] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part A.

[0033] Figure 5 It is a schematic diagram of the main structure of the positioning component in the embodiment of the present application.

[0034] Figure 6 yes Figure 5 A partial enlarged schematic diagram of part B.

[0035] Description of reference numerals: 1. Upper beam; 101. Beam body; 102. Rotating part; 2. Lower beam; 3. Hoisting roller; 4. Rotating motor; 5. Speed ​​reducer; 6. Active synchronous wheel; 7. Driven synchronous wheel; 8. Hoisting seat; 9. Hoisting rigging; 10. Sliding plate; 11. Hoisting hydraulic cylinder; 12. Reinforcement rod; 13. Reinforcement hydraulic cylinder; 14. Reinforcement active rod; 15. Reinforcement sleeve; 16. Reinforcement connecting rod; 17. Fixed rod; 18. Groove; 19 , connecting ring; 20, connecting groove; 21, connecting hydraulic cylinder; 22, connecting shaft; 23, locking ring; 24, locking wedge block; 25, locking spring; 26, locking slide groove; 27, positioning rod; 28, positioning head; 29, arc-shaped driving surface; 30, movable head; 31, movable spring; 32, arc-shaped guide surface; 33, accommodating groove; 34, movable groove; 35, recovery frame; 36, recovery motor; 37, recovery wheel; 38, recovery rope. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The embodiment of the present application discloses a large-tonnage deep-water block lifting sling.

[0038] Reference Figure 1 and Figure 2 The large-tonnage deep-water block lifting sling includes an upper beam body 1 and a lower beam body 2, wherein the upper beam body 1 includes a beam body portion 101 and a rotating portion 102 fixedly connected to the bottom of the beam body portion 101, and the lower beam body 2 is horizontally rotatably installed at the bottom of the upper beam body 1, i.e., the bottom of the rotating portion 102. The top of the upper beam body 1, i.e., the top of the beam body 101, is provided with two lifting rollers 3 distributed along its own length direction, so as to realize the lifting and transportation of the entire sling, and the upper beam body 1 is provided with a rotating mechanism for driving the lower beam body 2 to rotate.

[0039] Reference Figure 2 and Figure 3Specifically, the rotating mechanism includes a rotating motor 4, a reduction gear box 5, a driving synchronous wheel 6 and a driven synchronous wheel 7. In the embodiment of the present application, two rotating motors 4, reduction gear boxes 5 and driving synchronous wheels 6 are provided. The two reduction gear boxes 5 are fixedly installed on the top of the rotating part 102 and are respectively located on both sides of the thickness direction of the beam body 101. The two rotating motors 4 are respectively installed on the top of the two reduction gear boxes 5 and the output shafts of the two rotating motors 4 are fixedly connected to the input end of the reduction gear box 5. The two driving synchronous wheels 6 are both rotationally matched with the rotating part 102, and the two driving synchronous wheels 6 are respectively fixedly installed on the output ends of the two reduction gear boxes 5, so that the two rotating motors 4 drive the two driving synchronous wheels 6 to rotate through the two reduction gear boxes 5.

[0040] Continue to refer to Figure 2 and Figure 3 , the driven synchronous wheel 7 is coaxially fixedly installed on the lower beam body 2, and the outer circumferences of the two active synchronous wheels 6 are meshed with the inner circumferences of the driven synchronous wheel 7 (teeth are not shown), so that when the two active synchronous wheels 6 rotate, the driven synchronous wheel 7 and the lower beam body 2 are driven to rotate together. The rotating motor 4 and the reduction box 5 located on both sides of the beam body 101 in the thickness direction are convenient for ensuring the force stability of the upper beam body 1 when hoisting, and for realizing the rotation of the lower beam body 2 more stably.

[0041] Reference Figure 1 and Figure 2 The lower beam body 2 is provided with multiple groups of lifting mechanisms. In the embodiment of the present application, the number of lifting mechanisms is set to two groups. Specifically, the lifting mechanism includes a lifting seat 8, a lifting drive device and a lifting sling 9. The lower beam body 2 has two integrally arranged sliding plates 10. The two sliding plates 10 are respectively located on both sides of the thickness direction of the lower beam body 2 and are arranged with the same length as the lower beam body 2. The sliding plates 10 are all penetrated by the lifting seat 8 and slidably cooperate with the lifting seat 8 to ensure the stability of the lifting seat 8 when sliding along the length direction of the lower beam body 2.

[0042] Reference Figure 1 and Figure 4 The lifting drive device includes a lifting hydraulic cylinder 11, one end of which is rotatably mounted on the bottom of the lower beam body 2, and the other end is rotatably mounted on the lifting seat 8, so that the lifting hydraulic cylinder 11 drives the lifting seat 8 to slide along the length direction of the lower beam body 2 by driving the movement of its own piston rod. In order to further ensure the stability of the position of the lifting seat 8 after sliding, the lifting seat 8 is provided with a reinforcement mechanism fixed to the lower beam body 2. The reinforcement mechanism is provided with two groups and is respectively located on both sides of the thickness direction of the lower beam body 2. The reinforcement mechanism includes two oppositely arranged reinforcement rods 12 and a reinforcement drive assembly.

[0043] Reference Figure 3 and Figure 4The two reinforcement rods 12 are respectively located on both sides of the sliding plate 10 in the vertical direction, and the two reinforcement rods 12 are slidably matched with the lifting seat 8 in the vertical direction. The reinforcement drive assembly is used to drive the two reinforcement rods 12 to move in the direction of approaching or moving away from each other. Specifically, the reinforcement drive assembly includes a reinforcement hydraulic cylinder 13, a reinforcement active rod 14, a reinforcement sleeve 15 and a reinforcement connecting rod 16. The reinforcement hydraulic cylinder 13 is horizontally installed on the lifting seat 8, and the reinforcement active rod 14 is fixedly installed on one end of the piston rod of the reinforcement hydraulic cylinder 13, so that the reinforcement hydraulic cylinder 13 drives the reinforcement active rod 14 to move in the direction of approaching or moving away from the sliding plate 10. There are two reinforcement connecting rods 16 and reinforcement sleeves 15 corresponding to the reinforcement rods 12. The two reinforcement sleeves 15 are both sleeved and slidably matched with the reinforcement active rod 14. One end of one reinforcement connecting rod 16 is rotationally connected to the reinforcement rod 12, and the other end is rotationally connected to one of the reinforcement sleeves 15, so that when the reinforcement hydraulic cylinder 13 drives its own piston rod to move, the reinforcement active rod 14 drives the two reinforcement rods 12 to move towards or away from each other through the reinforcement sleeves 15 and the reinforcement connecting rods 16. When the two reinforcement rods 12 move to a state of pressing against the sliding plate 10, they play a further limiting role on the position of the lifting seat 8.

[0044] Continue to refer to Figure 3 and Figure 4 In order to further ensure the stability of the position of the lifting seat 8 after sliding, a fixing rod 17 is fixedly connected to the side of the active connecting rod close to the sliding plate 10, and a plurality of grooves 18 evenly distributed along the length direction of the sliding plate 10 are provided on one side in the width direction. When the two reinforcement rods 12 are pressed against the two sides of the sliding plate 10, the fixing rod 17 is inserted into one of the grooves 18 and contacts the two groove walls in the vertical direction of the groove 18, so as to further limit the position of the lifting seat 8.

[0045] Reference Figure 5 and Figure 6 A connecting ring 19 is fixedly installed at the end of the lifting sling 9, and the lifting seat 8 is provided with a connecting assembly connected to the connecting ring 19. Specifically, a connecting groove 20 is opened at the bottom of the lifting seat 8, and the connecting assembly includes a connecting hydraulic cylinder 21 and a connecting shaft 22, wherein the connecting hydraulic cylinder 21 is horizontally fixedly installed on the lifting seat 8, one end of the connecting shaft 22 is penetrated into the connecting groove 20 and slidingly cooperates with the lifting seat 8, the connecting shaft 22 is fixedly installed on the piston rod of the connecting hydraulic cylinder 21, and the connecting shaft 22 is plug-fitted with the connecting ring 19. When the connecting ring 19 extends into the connecting groove 20, the connecting hydraulic cylinder 21 drives its own piston rod to move so that the connecting shaft 22 is inserted into or detached from the connecting ring 19, thereby realizing the connection or disconnection between the lifting seat 8 and the lifting sling 9.

[0046] Continue to refer to Figure 5 and Figure 6In order to further ensure the stability of the lifting seat 8 after being connected to the lifting sling 9, a locking component for further limiting the connecting shaft 22 is provided on the side of the lifting seat 8 away from the connecting hydraulic cylinder 21. Specifically, the locking component includes a locking ring 23, a locking wedge block 24 and a locking spring 25, wherein the locking ring 23 is fixedly installed on the lifting seat 8. In the embodiment of the present application, two locking wedge blocks 24 and two locking springs 25 are provided corresponding to the locking ring 23, and the two locking wedge blocks 24 are circumferentially distributed around the axis of the locking ring 23. The inner circumference of the locking ring 23 is provided with two locking grooves 26 which are circumferentially distributed around its own axis and extend along its own radial direction. The two locking wedge blocks 24 are respectively slidably fitted in the two locking grooves 26, that is, the two locking wedge blocks 24 are both radially penetrated by the locking ring 23 and slidably fitted in the locking ring 23. One end of the locking spring 25 is fixedly connected to the locking wedge block 24, and the other end is fixedly connected to the groove wall of the locking groove 26, so that one end of the locking wedge block 24 is located in the area surrounded by the inner ring of the locking ring 23 under the elastic force of the locking spring 25, and the wedge surface of the locking wedge block 24 is located on the side of the locking wedge block 24 facing the lifting seat 8.

[0047] Reference Figure 6 The end of the connecting shaft 22 away from the connecting hydraulic cylinder 21 is provided with a positioning assembly. Specifically, the positioning assembly includes a positioning rod 27 and a positioning head 28, wherein the positioning rod 27 is fixedly connected to one end of the connecting shaft 22, the diameter of the positioning rod 27 is smaller than the diameter of the connecting shaft 22, the positioning head 28 is fixedly connected to the end of the positioning rod 27 away from the connecting shaft 22, and the end of the positioning head 28 away from the connecting shaft 22 is provided with an arc-shaped driving surface 29. In the process of the connecting hydraulic cylinder 21 driving the connecting shaft 22 to penetrate the connecting ring 19, the arc-shaped driving surface 29 of the positioning head 28 drives the positioning wedge block 24 to move in the direction away from the axis of the positioning ring 23 by contacting with the wedge surface of the positioning wedge block 24. When the positioning wedge block 24 makes the side away from the wedge surface contact with the side of the positioning head 28 toward the connecting shaft 22 under the elastic force of the positioning spring 25, the positioning wedge block 24 further limits the position of the positioning head 28.

[0048] Continue to refer to Figure 6In order to quickly unlock the connecting shaft 22, the positioning assembly further includes a movable head 30 and a movable spring 31, wherein the movable head 30 is sleeved and slidably matched with the positioning rod 27, and both ends of the movable head 30 close to and away from the connecting shaft 22 are provided with arc-shaped guide surfaces 32, and when the arc-shaped guide surface 32 conflicts with the wedge surface of the positioning wedge block 24, the positioning wedge block 24 is driven to move in a direction away from the axis of the positioning ring 23. A receiving groove 33 is provided at one end of the connecting shaft 22 close to the movable head 30, and the movable spring 31 is sleeved outside the positioning rod 27 and located in the receiving groove 33, one end of the movable spring 31 is connected to the connecting shaft 22, and the other end is connected to the movable head 30, and the movable spring 31 applies elastic force to the movable head 30 to move in a direction away from the positioning head 28, and the positioning head 28 is provided with a movable groove 34 on the side facing the connecting shaft 22, and the movable groove 34 is adapted to the shape of the movable head 30 for accommodating the movable head 30.

[0049] When the connecting hydraulic cylinder 21 continues to drive the connecting shaft 22 to move in the direction close to the locking ring 23, the movable head 30 pushes the locking wedge block 24 to move in the direction away from the locking ring 23. When the locking wedge block 24 is located on the side of the movable head 30 away from the positioning head 28 and makes the connecting shaft 22 move in the opposite direction, the locking wedge block 24 first drives the movable head 30 so that the movable head 30 is located in the movable groove 34. During the continued reverse movement, the locking wedge block 24 moves in the direction away from the axis of the connecting shaft 22 driven by the arc-shaped guide surface 32, thereby releasing the fixation of the connecting shaft 22.

[0050] Replay Figure 1 and Figure 2 In order to facilitate the recovery of the lifting sling 9 after the lifting sling 9 is lifted, a recovery component is arranged on the top of the lower beam body 2, and the recovery component includes a recovery frame 35, a recovery motor 36, a recovery wheel 37 and a recovery rope 38, wherein the recovery frame 35 is fixedly installed on the lower beam body 2, the recovery wheel 37 is rotatably installed on the recovery frame 35, the recovery motor 36 is fixedly installed on the recovery frame 35 to drive the recovery wheel 37 to rotate around its own axis, and the recovery rope 38 is wound around the recovery wheel 37. When one end of the recovery rope 38 is connected to the lifting sling 9 and the lifting sling 9 has completed the lifting of the workpiece and released the connection with the lifting seat 8, the recovery motor 36 drives the recovery wheel 37 to rotate around its own axis, so that the recovery rope 38 can realize the recovery of the lifting sling 9, which is convenient and fast.

[0051] The implementation principle of the embodiment of the present application is: when it is necessary to lift workpieces, i.e. prefabricated blocks, of different structures, volumes, weights or sizes, the lifting seat 8 is driven to slide by the lifting hydraulic cylinder 11, and the lower beam 2 is driven to rotate by the rotating motor 4, so as to facilitate the rapid movement of the rigging installed on the lifting seat 8 to the position where different prefabricated blocks are to be lifted. During the movement of the lifting seat 8, there is no need to drive the lower lifting beam or the lifting seat 8 through additional lifting equipment. The operation of moving the lifting seat 8 to the position where different prefabricated blocks are to be lifted is convenient and fast, which is conducive to improving work efficiency.

[0052] The embodiment of the present application also discloses a method for hoisting a large-tonnage deepwater block. The method for hoisting a large-tonnage deepwater block comprises the following specific steps: S1, installing a hoisting sling 9 on a workpiece to be hoisted.

[0053] S2, through the rotation of the lower beam body 2 and the movement of the lifting seat 8 along the length direction of the lower beam body 2, the lifting seat 8 is quickly moved to a position convenient for connection with the lifting sling 9; specifically, the rotation of the lower beam body 2 and the movement of the lifting seat 8 along the length direction of the lower beam body 2 are respectively realized by driving the rotation of the output end of the rotating motor 4 and the telescopic movement of the piston rod of the lifting hydraulic cylinder 11.

[0054] S3, after installing the lifting sling 9 on the lifting seat 8, lift and transport the upper beam 1, and after the lifting workpiece is moved to the top of the lifting position, lower the workpiece to be lifted; specifically, extend the connecting ring 19 into the connecting groove 20, and drive the movement of its own piston rod through the connecting hydraulic cylinder 21 so that the connecting shaft 22 is inserted into the connecting ring 19, thereby realizing the connection and installation between the lifting seat 8 and the lifting sling 9.

[0055] S4, after the hoisted workpiece is lowered to the hoisting position, the connection between the hoisting seat 8 and the hoisting sling 9 is released; specifically, the hydraulic cylinder 21 is connected to drive the movement of its own piston rod so that the connecting shaft 22 is disengaged from the connecting ring 19, thereby releasing the connection installation between the hoisting seat 8 and the hoisting sling 9.

[0056] S5, the upper beam body 1 is lifted again, and the hoisting rigging 9 is recovered; specifically, the recovery motor 36 drives the recovery wheel 37 to rotate around its own axis so that the recovery rope 38 can recover the hoisting rigging 9.

[0057] S6, repeat steps S1-S5, and after all the workpieces to be lifted are lifted, the construction is completed.

[0058] The implementation principle of a large-tonnage deep-water block lifting method in an embodiment of the present application is: when workpieces, i.e. prefabricated blocks, of different structures, volumes, weights or sizes need to be lifted, it is sufficient to drive the lower beam 2 to rotate and the lifting seat 8 to slide, without the need for additional lifting equipment to drive the lower lifting beam or the lifting seat 8. The lifting seat 8 is moved to the position for lifting different prefabricated blocks, which is convenient and quick to operate, and is conducive to improving work efficiency.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A large-tonnage deepwater block lifting sling, comprising an upper beam body (1) and a lower beam body (2), characterized in that: The lower beam body (2) is horizontally rotatably mounted on the upper beam body (1), and the upper beam body (1) is provided with a rotating mechanism for driving the lower beam body (2) to rotate; the lower beam body (2) is provided with a plurality of lifting mechanisms, and the lifting mechanisms include a lifting seat (8), a lifting drive device, and a lifting sling (9); the lifting seat (8) is slidably mounted on the lower beam body (2) along the length direction of the lower beam body (2), and the lifting drive device is used to drive the lifting seat (8) to slide; the lifting sling (9) is mounted on the lifting seat (8) and is used to lift the workpiece.

2. A large-tonnage deepwater block lifting sling according to claim 1, characterized in that: The rotating mechanism comprises a rotating motor (4), a reduction gear box (5), an active synchronous wheel (6) and a driven synchronous wheel (7); the active synchronous wheel (6) is rotatably mounted on the upper beam body (1); the rotating motor (4) drives the active synchronous wheel (6) to rotate via the reduction gear box (5); the driven synchronous wheel (7) is coaxially fixedly mounted on the lower beam body (2); and the driven synchronous wheel (7) is rotatably mounted on the upper beam body (1) and meshes with the active synchronous wheel (6).

3. A large-tonnage deepwater block lifting sling according to claim 1, characterized in that: The lower beam body (2) is provided with a recovery component for recovering the lifting rigging (9), and the recovery component includes a recovery frame (35), a recovery motor (36), a recovery wheel (37) and a recovery rope (38). The recovery frame (35) is fixedly installed on the lower beam body (2), the recovery wheel (37) is rotatably installed on the recovery frame (35), the recovery motor (36) is used to drive the recovery wheel (37) to rotate around its own axis, and the recovery rope (38) is wound around the recovery wheel (37).

4. A large-tonnage deepwater block lifting sling according to claim 1, characterized in that: The lifting drive device comprises a lifting hydraulic cylinder (11), one end of the lifting hydraulic cylinder (11) is installed on the lower beam body (2), and the other end is installed on the lifting seat (8), the lower beam body (2) has a sliding plate (10), the lifting seat (8) is slidably matched with the sliding plate (10), and the lifting seat (8) is provided with a reinforcement mechanism fixed to the lower beam body (2), the reinforcement mechanism comprises two oppositely arranged reinforcement rods (12) and a reinforcement drive assembly, the reinforcement rods (12) are respectively located on both sides of the sliding plate (10), and the reinforcement drive assembly is used to drive the two reinforcement rods (12) to move in a direction of approaching or moving away from each other.

5. A large-tonnage deepwater block lifting sling according to claim 4, characterized in that: The reinforcement drive assembly comprises a reinforcement hydraulic cylinder (13), a reinforcement active rod (14), a reinforcement sleeve (15) and a reinforcement connecting rod (16). The two reinforcement rods (12) are slidably matched with the lifting seat (8) in the vertical direction. Two reinforcement connecting rods (16) and two reinforcement sleeves (15) are respectively arranged corresponding to the reinforcement rods (12). One end of one of the reinforcement connecting rods (16) is rotatably connected to the reinforcement rod (12) and the other end is rotatably connected to one of the reinforcement sleeves (15). Both the reinforcement sleeves (15) are sleeved and slidably matched with the reinforcement active rod (14). The reinforcement hydraulic cylinder (13) is horizontally installed on the lifting seat (8) and is used to drive the reinforcement active rod (14) to move in a direction close to or away from the sliding plate (10).

6. A large-tonnage deepwater block lifting sling according to claim 5, characterized in that: A plurality of grooves (18) evenly distributed along the length direction of the sliding plate (10) are provided on one side in the width direction of the sliding plate (10); a fixing rod (17) is fixedly connected to the side of the active connecting rod close to the sliding plate (10); when the two reinforcing rods (12) are pressed against the two sides of the sliding plate (10), the fixing rod (17) is inserted into one of the grooves (18).

7. A large-tonnage deepwater block lifting sling according to claim 1, characterized in that: A connecting ring (19) is fixedly installed at the end of the lifting sling (9), and the lifting seat (8) is provided with a connecting assembly, which includes a connecting hydraulic cylinder (21) and a connecting shaft (22). The connecting hydraulic cylinder (21) is horizontally fixedly installed on the lifting seat (8), and a connecting groove (20) is provided at the bottom of the lifting seat (8). The connecting shaft (22) is located in the connecting groove (20) and is fixedly installed on the piston rod of the connecting hydraulic cylinder (21). The connecting shaft (22) is penetrated by the lifting seat (8) and is slidably matched with the lifting seat (8), and the connecting shaft (22) is plug-fitted with the connecting ring (19).

8. A large-tonnage deepwater block lifting sling according to claim 7, characterized in that: A locking assembly is provided on the side of the lifting seat (8) away from the hydraulic cylinder (21), and the locking assembly includes a locking ring (23), a locking wedge block (24) and a locking spring (25). The locking ring (23) is fixedly mounted on the lifting seat (8), the locking wedge block (24) is radially penetrated by the locking ring (23) and is slidably fitted on the locking ring (23), the locking spring (25) is installed between the locking wedge block (24) and the locking ring (23), the locking spring (25) applies an elastic force to the locking wedge block (24) to move toward the axis of the locking ring (23), and the wedge surface of the locking wedge block (24) is located on the side of the locking wedge block (24) facing the lifting seat (8); A positioning assembly is provided at one end of the connecting shaft (22), and the positioning assembly comprises a positioning rod (27) and a positioning head (28). The positioning rod (27) is fixedly connected to one end of the connecting shaft (22), and the diameter of the positioning rod (27) is smaller than the diameter of the connecting shaft (22). The positioning head (28) is fixedly connected to one end of the positioning rod (27) away from the connecting shaft (22).

9. A large-tonnage deepwater block lifting sling according to claim 8, characterized in that: The positioning assembly further comprises a movable head (30) and a movable spring (31). The movable head (30) is sleeved and slidably engaged with the positioning rod (27). Both ends of the movable head (30) close to and away from the connecting shaft (22) are provided with arc-shaped guide surfaces (32). The movable spring (31) is arranged between the movable head (30) and the connecting shaft (22). The movable spring (31) applies an elastic force to the movable head (30) to move in a direction away from the positioning head (28). A movable groove (34) for accommodating the movable head (30) is provided on one side of the positioning head (28) facing the connecting shaft (22).

10. A method for lifting a large-tonnage deepwater block, based on a large-tonnage deepwater block lifting sling according to any one of claims 1 to 9, characterized in that: The method comprises the following specific steps: S1, installing a lifting sling (9) on a workpiece to be lifted; S2, by rotating the lower beam body (2) and moving the lifting seat (8) along the length direction of the lower beam body (2), the lifting seat (8) is quickly moved to a position convenient for connection with the lifting rigging (9); S3, after installing the lifting sling (9) on the lifting seat (8), the upper beam body (1) is lifted and transported, and after the lifting workpiece is moved to the top of the lifting position, the workpiece to be lifted is lowered; S4, after the hoisted workpiece is lowered to the hoisting position, the connection between the hoisting seat (8) and the hoisting sling (9) is released; S5, re-lifting the upper beam body (1) and recovering the lifting rigging (9); S6, repeat steps S1-S5, and after all the workpieces to be lifted are lifted, the construction is completed.

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