A hoist for the construction of a profiled steel skeleton with automatic positioning

Abstract

The present invention relates to the technical field of construction lifting tools, and provides a lifting tool for the construction of a profiled steel skeleton with automatic positioning, which includes a lifting tool boom and a first steel wire rope. The lifting tool boom includes a main load-bearing beam, a secondary load-bearing beam and a boom body. The upper shackle of the first steel wire rope is connected to the tower crane hook, and the lower end of the first steel wire rope is connected to a boom hanger arranged under the boom body through a first bow shackle. A main beam hanger is arranged on the main load-bearing beam, a limiting plate is arranged on the secondary load-bearing beam, a precision-threaded steel bar is installed on the boom body, an adjusting nut is arranged on the precision-threaded steel bar, and a second bow shackle is arranged below the adjusting nut. Through the above technical solution, the problem that the existing lifting tools cannot meet the requirements of the two component structures of lifting the complex stress profiled steel skeleton + steel bars inside the tower column and positioning the stiffening skeleton + steel bars is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction lifting tools, and specifically, to a lifting tool for the construction of a profiled steel skeleton with automatic positioning. Background Art

[0002] In order to accelerate the construction speed of the main tower of a bridge and improve production efficiency, during the construction of the main tower's steel bars, construction methods such as steel bar componentization or integral hoisting are often adopted. The stressed profiled steel skeleton + steel bars and the positioning stiffening skeleton + steel bars are two component segments suitable for the hoisting of the main tower's steel bars. For variable cross-section tower columns, the weight and center of gravity of each segment of the steel bar component change, and the position of the lifting point shrinks inward as the cross-section of the segment component decreases. At the same time, a deviation between the center of gravity of the segment component and the projection of the lifting center on the ground during hoisting will cause the component to tip over and even deform during the hoisting process, which has an adverse impact on the docking and installation of the steel bars.

[0003] The existing lifting forms of steel bar component lifting tools can be roughly classified as arranging a ring-shaped fixing component outside the steel bars to directly lift the steel bars; arranging a connecting piece at the top of the steel bars to lift the connecting piece; using a stiffening skeleton to connect the steel bars into a whole and lifting the top tie of the stiffening skeleton. Although the current lifting tools also adopt a frame structure, the above-mentioned lifting forms of the lifting tools cannot simultaneously meet the requirements for lifting the stressed profiled steel skeleton + steel bars. During the construction of the main tower's steel bar componentization, usually a single type of stiffening skeleton is used throughout the tower as the positioning device for steel bar binding, and the structural form of the lifting point remains unchanged. Therefore, the lifting object has limitations and cannot meet the requirements for lifting two component structures of the complex stressed profiled steel skeleton + steel bars and the positioning stiffening skeleton + steel bars inside the tower column.

[0004] The invention patent with the publication number CN117486069A discloses a hoisting device, including: a support structure; an adjusting member sleeved on the support structure; a first limiting structure connected to one end of the support structure for restricting the axial position of the bushing; a second limiting structure hinged to the side wall of the adjusting member for restricting the radial position of the bushing; a connecting structure connected to the support structure, and the connecting structure is used to connect to a lifting tool; wherein, the adjusting member is used to adjust the position of the second limiting structure relative to the bushing. When the bushing is sleeved on the support structure, the axial position of the bushing is restricted by the first limiting structure. And by adjusting the second limiting structure through the adjusting member, the second limiting structure abuts against the inner wall of the bushing to restrict the radial position of the bushing. The radial positioning and axial positioning of the bushing installation are completed, facilitating subsequent hoisting operations, reducing the assembly difficulty, and saving the construction time cost and production cost of the ship. Although the above device can achieve radial positioning and axial positioning, during use, it cannot perform adaptive adjustment work according to the overall center of gravity position, and the stability is insufficient. Moreover, the existing lifting tools cannot automatically position the support position according to the position of the lifting rope during hoisting, and cannot adaptively adjust the center of gravity position of the device according to the pressure at the support position to ensure the stability of the device. Summary of the Invention

[0005] The present invention provides a lifting tool for the construction of a profiled steel skeleton with automatic positioning, which solves the problem that the existing lifting tools cannot meet the requirements of the two component structures of lifting the complex stress-bearing profiled steel skeleton + steel bars and positioning stiffening skeleton + steel bars inside the tower column.

[0006] The technical solution of the present invention is as follows:

[0007] A lifting tool for the construction of a profiled steel skeleton with automatic positioning includes a lifting tool boom and a first steel wire rope. The lifting tool boom includes a main load-bearing beam, a secondary load-bearing beam and a hanging beam body. The upper shackle of the first steel wire rope is connected to the tower crane hook. A main beam lifting ear is provided on the main load-bearing beam, and the lower end of the first steel wire rope is connected to the main beam lifting ear through a first bow shackle. A limiting plate is provided on the secondary load-bearing beam. Fine-threaded steel bars are installed on the hanging beam body, and adjusting nuts are provided on the fine-threaded steel bars. A second bow shackle is provided below the adjusting nut, and a second steel wire rope is provided below the second bow shackle. The upper end of the second steel wire rope is connected to a hanging beam lifting ear arranged below the hanging beam body through the second bow shackle; when hoisting a steel bar segment, the lower end of the second steel wire rope is connected to a stiffening skeleton segment lifting ear through a swivel bolt and a third bow shackle. Below the stiffening skeleton segment lifting ear, there are a steel bar body, a stiffening skeleton body and a profiled steel skeleton body; when hoisting profiled steel and steel bar components, the lower end of the second steel wire rope is connected to a profiled steel skeleton segment lifting ear through a swivel bolt and a third bow shackle.

[0008] As a preferred solution of the present invention, the hanging beam lifting ear is a profiled steel skeleton lifting ear or a stiffening skeleton lifting ear; a profiled steel fixture is installed on the profiled steel skeleton lifting ear, bolt connection holes are provided on both the profiled steel fixture and the stiffening skeleton lifting ear, bolt connection holes are provided on the stiffening skeleton lifting ear, a flat connection channel steel is installed on the stiffening skeleton lifting ear, and a force-transmitting angle steel is connected to the flat connection channel steel.

[0009] As a preferred solution of the present invention, a support assembly is provided at the bottom of the first steel wire rope. An automatic positioning assembly is installed around the support assembly. A traction steel rope is connected to the automatic positioning assembly, and a counterweight adjustment assembly is provided on the support assembly.

[0010] As a preferred embodiment of the present invention, the support assembly includes a top plate fixedly connected to the bottom of the first steel wire rope. A first guide rod is fixedly connected below the top plate. Jacks are fixedly connected to the bottom of the top plate on both sides of the first guide rod. The bottom of the first guide rod is fixedly connected to a first support plate. A second support plate is slidably installed on the outside of the first guide rod. A second support block is fixedly connected to the second support plate. A first support block is fixedly connected above the second support block. The first support block is fixedly connected to the jack.

[0011] As a preferred embodiment of the present invention, the second support blocks are evenly distributed below the first support block. The traction steel wire rope is guided by the second support blocks and a guide wheel and is connected to a connection ring. The guide wheel is rotatably connected to the second support plate.

[0012] As a preferred embodiment of the present invention, the weight adjustment assembly includes a moving groove opened on the second support plate. A first weight block is slidably installed in the moving groove. A first spring is fixedly connected between the first weight block and the second support plate. A second guide rod is fixedly connected to the inner wall of the moving groove. A first screw rod is fixedly connected to the bottom of the first weight block. A second weight block is threadedly connected to the bottom of the first screw rod. A second screw rod is fixedly connected to the bottom of the second weight block.

[0013] As a preferred embodiment of the present invention, a through hole for docking with the connection ring is opened on the first weight block. The connection ring is in the shape of a toroid with a notch on one side. The notch on the connection ring is located on the side close to the traction steel wire rope.

[0014] As a preferred embodiment of the present invention, the automatic positioning assembly includes an outer frame slidably installed around the second support plate. A third guide rod is fixedly connected to the middle of the outer frame. A second spring is fixedly connected between the third guide rod and the second support plate. A third spring is fixedly connected between the outer frame and the second support plate. A fourth guide rod is fixedly provided on the outer frame. A slider for supporting the second steel wire rope is slidably installed on the fourth guide rod. A folding rod is fixedly connected to the top of the outer frame. The folding rod is fixedly connected to the traction steel wire rope.

[0015] As a preferred embodiment of the present invention, the outer frame, the third guide rod, the fourth guide rod and the folding rod are fixedly connected as an integral structure. The folding rod and the second support plate are in mutual contact.

[0016] The working principle and beneficial effects of the present invention are as follows:

[0017] 1. The sling structure is simple. The H-shaped steel bars are used as the main structure for hoisting operations of components. The vertical length of the wire ropes is adjusted by turnbuckles, and the load of the component segments is evenly distributed to each wire rope, reducing the deformation during the hoisting process of the component segments and improving the butt joint quality of the steel bars of adjacent segments.

[0018] 2. Different forms of lifting lug structures are adopted according to the differences of the hoisted components. The stiffening skeleton lifting lugs are arranged on the horizontal connecting channel steel and the force-transmitting angle steel, increasing and enhancing the structural stability; the section steel skeleton lifting lugs are bolted to the section steel joints, and the strengths of both forms of lifting lugs are reliable.

[0019] 3. The sling uses adjusting nuts and precision-threaded steel bars to realize the movement and fixation of the lifting beam, thereby realizing the movement of the lifting point in the direction perpendicular to the tower wall; the sling optimizes the layout of the lifting points according to requirements to adapt to the changes in the position of the lifting points in the direction parallel to the tower wall. It can make the sling applicable to the hoisting of each segment of components, with the characteristic of strong practicability.

[0020] 4. By deepening the design of the lifting lug form and optimizing the layout spacing of the lifting lugs, the sling and hoisting method of the present invention can be applicable to the steel bar segment hoisting construction of the tower column with two types of component combinations: stressed section steel skeleton + steel bars and positioning stiffening skeleton + steel bars, making the sling have universal applicability, avoiding repeated investment in materials, and effectively improving work efficiency.

[0021] 5. Through the support component, counterweight adjustment component and automatic positioning component on the device, the functions of automatic positioning and center of gravity adjustment are realized. The device can install the wire ropes at the corresponding positions into the concave structures in the sliders. The component pressure and gravity will cause the wire ropes at the corresponding positions to automatically adjust the sliders to the specified positions, thereby realizing the positioning function, ensuring that the positions of the sliders corresponding to each wire rope are correct, so as to utilize the pressure of the sliders to push the outer frame subsequently. During the movement of the outer frame, the traction steel rope can be pulled through the folding rod. The hook at the end of the traction steel rope can be hung in the through holes of the first counterweight blocks at different positions. When the weight of the component on one side is greater, the pressure on the slider at this position is greater, and during the movement of the slider and the outer frame, the traction steel rope is pulled farther. By hanging the hook on the first counterweight block on the heavier side of the component, the device can automatically adjust the center of gravity to the middle position, enhancing the adaptability of the device.

[0022] 6. The first support block and the second support block are arranged on the device. Since the second support blocks are evenly distributed below the first support block and there are gaps between adjacent second support blocks, the connection ring can be passed through the gaps and wound around the corresponding second support blocks with different numbers of turns. At this time, the connection ring is hung on the first counterweight block, and the counterweight effect of the device can be adjusted to ensure that the center of gravity adjustment of the device is accurate enough. Description of the Drawings

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Figure 1 It is a schematic diagram of the overall structure of a hoist for the construction of a profiled steel skeleton with automatic positioning according to the present invention;

[0025] Figure 2 It is a schematic diagram of the connection structure between the first steel wire rope and the first bow shackle according to the present invention;

[0026] Figure 3 It is a schematic diagram of the ear structure of a rigid skeleton segment according to the present invention;

[0027] Figure 4 It is a schematic diagram of the connection structure between the ear of the profiled steel skeleton segment and the steel bar body according to the present invention;

[0028] Figure 5 It is a schematic diagram of the third bow shackle structure according to the present invention;

[0029] Figure 6 It is a schematic diagram of the ear structure of a profiled steel skeleton according to the present invention;

[0030] Figure 7 It is a schematic diagram of the ear structure of a rigid skeleton according to the present invention;

[0031] Figure 8 It is a schematic diagram of the connection structure between the precision-threaded steel bar and the adjusting nut according to the present invention;

[0032] Figure 9 It is a schematic diagram of the connection structure between the first support plate and the first guide rod according to the present invention;

[0033] Figure 10 It is Figure 9 An enlarged schematic diagram of the structure at A in

[0034] Figure 11 It is a top view schematic diagram of the second support plate according to the present invention;

[0035] Figure 12 It is Figure 11 An enlarged schematic diagram of the structure at B in

[0036] Figure 13 It is Figure 11 An enlarged schematic diagram of the structure at C in

[0037] Figure 14 It is a schematic diagram of the connection structure between the second support plate and the first guide rod according to the present invention;

[0038] Figure 15 It is Figure 14 An enlarged schematic diagram of the structure at D in

[0039] Figure 16 It is Figure 14Enlarged schematic view of the structure at position E;

[0040] Figure 17 It is a schematic diagram of the connection structure between the first counterweight block and the first screw rod of the present invention;

[0041] Figure 18 Is Figure 17 Enlarged schematic view of the structure at position F in the figure.

[0042] Reference numerals: 1, main load-bearing beam; 2, secondary load-bearing beam; 3, hoist beam body; 4, hoist beam lifting lug; 5, limit plate; 6, main beam lifting lug; 7, first bow shackle; 8, precision-threaded steel bar; 9, adjusting nut; 10, flower basket bolt; 11, second bow shackle; 12, stiffening skeleton segment lifting lug; 13, first steel wire rope; 14, second steel wire rope; 15, third bow shackle; 16, profiled steel skeleton segment lifting lug; 17, profiled steel skeleton lifting lug; 18, profiled steel fixture; 19, stiffening skeleton lifting lug; 20, horizontal bracing channel steel; 21, force-transmitting angle steel; 22, bolt connection hole; 23, steel bar body; 24, stiffening skeleton body; 25, profiled steel skeleton body; 26, support assembly; 2601, first support plate; 2602, first guide rod; 2603, second support plate; 2604, top plate; 2605, jack; 27, first support block; 28, second support block; 29, counterweight adjustment assembly; 2901, first counterweight block; 2902, through hole; 2903, first spring; 2904, moving groove; 2905, second guide rod; 2906, first screw rod; 2907, second counterweight block; 2908, second screw rod; 30, automatic positioning assembly; 3001, outer frame; 3002, third guide rod; 3003, second spring; 3004, third spring; 3005, fourth guide rod; 3006, slider; 3007, folding rod; 31, towing steel wire rope; 32, connecting ring; 33, guide wheel. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0044] Embodiment 1

[0045] As Figures 1 - 18As shown in the figure, this embodiment proposes a lifting tool for the construction of a profiled steel skeleton with automatic positioning, which includes a lifting tool boom and a first steel wire rope 13. The lifting tool boom includes a main load-bearing beam 1, a secondary load-bearing beam 2, and a lifting beam body 3. The upper shackle of the first steel wire rope 13 is connected to the tower crane hook. A main beam lifting ear 6 is provided on the main load-bearing beam 1, and the lower end of the first steel wire rope 13 is connected to the main beam lifting ear 6 through a first bow shackle 7. A limiting plate 5 is provided on the secondary load-bearing beam 2. A precision-threaded steel bar 8 is installed on the lifting beam body 3. An adjusting nut 9 is provided on the precision-threaded steel bar 8. A second bow shackle 11 is provided below the adjusting nut 9. A second steel wire rope 14 is provided below the second bow shackle 11. The upper end of the second steel wire rope 14 is connected to a lifting beam lifting ear 4 provided below the lifting beam body 3 through the second bow shackle 11. When hoisting a reinforcing bar segment, the lower end of the second steel wire rope 14 is connected to a stiffening skeleton segment lifting ear 12 through a turnbuckle 10 and a third bow shackle 15. Below the stiffening skeleton segment lifting ear 12, there are a reinforcing bar body 23, a stiffening skeleton body 24, and a profiled steel skeleton body 25. When hoisting profiled steel and reinforcing bar components, the lower end of the second steel wire rope 14 is connected to a profiled steel skeleton segment lifting ear 16 through a turnbuckle 10 and a third bow shackle 15. The lifting tool realizes the change of the position of the lifting beam body 3 to adapt to the contraction and expansion of the reinforcing bar components by adjusting the position of the adjusting nut 9 on the precision-threaded steel bar 8. By adjusting the turnbuckle 10, the center of gravity of the component is adjusted to solve the problems of component inclination and deviation between the center of gravity of the component and the ground projection of the lifting center. By optimizing and adjusting the layout of the lifting beam lifting ear 4, the lifting tool is ensured to have the ability to hoist profiled steel, reinforcing bars, and reinforcing bar component segments. As the reinforcing bar components contract and expand, the change of the lifting point position is realized by cutting the interference part at the end of the lifting beam body 3 on-site.

[0046] Embodiment 2

[0047] As Figures 1 - 18 shown, based on the same concept as the above Embodiment 1, this embodiment also proposes a lifting tool for the construction of a profiled steel skeleton with automatic positioning.

[0048] In this embodiment, the lifting beam lifting ear 4 is a profiled steel skeleton lifting ear 17 or a stiffening skeleton lifting ear 19. A profiled steel fixture 18 is installed on the profiled steel skeleton lifting ear 17. Bolt connection holes 22 are provided on both the profiled steel fixture 18 and the stiffening skeleton lifting ear 19. Bolt connection holes 22 are provided on the stiffening skeleton lifting ear 19. A flat-connected channel steel 20 is installed on the stiffening skeleton lifting ear 19. A force-transferring angle steel 21 is connected to the flat-connected channel steel 20. The force-transferring angle steel 21 can enhance the overall stability of the structure. The device can be used by switching different lifting ears according to needs.

[0049] In this embodiment, a support assembly 26 is provided at the bottom of the first steel wire rope 13. An automatic positioning assembly 30 is installed around the support assembly 26. A traction steel wire rope 31 is connected to the automatic positioning assembly 30. A counterweight adjustment assembly 29 is provided on the support assembly 26. The support assembly 26 is used to adjust the support range of the device. Before use, the support range is adjusted to the maximum. Then, the automatic positioning assembly 30 can adaptively adjust the stretching length of the traction steel wire rope 31 at that place according to the weight of the parts on one side of the device, so that the center of gravity of the device is as centered as possible.

[0050] In this embodiment, the support assembly 26 includes a top plate 2604 fixedly connected to the bottom of the first steel wire rope 13. A first guide rod 2602 is fixedly connected below the top plate 2604. Jacks 2605 are fixedly connected to the bottom of the top plate 2604 on both sides of the first guide rod 2602. The bottom of the first guide rod 2602 is fixedly connected to a first support plate 2601. A second support plate 2603 is slidably installed on the outside of the first guide rod 2602. A second support block 28 is fixedly connected to the second support plate 2603. A first support block 27 is fixedly connected above the second support block 28. The first support block 27 and the jack 2605 on the device are fixedly connected. The first support block 27 and the second support block 28 on the device are used to support the jack 2605. Before use, the jack 2605 is shortened, and the second support plate 2603 moves upward above the first support plate 2601 under the guiding action of the first guide rod 2602, so as to adaptively adjust the support height according to the height of the parts subsequently.

[0051] In this embodiment, the second support blocks 28 are evenly distributed below the first support block 27. The traction steel wire rope 31 is guided by the second support blocks 28 and the guide wheels 33 and is connected to the connecting ring 32. The guide wheels 33 are rotatably connected to the second support plate 2603. There are gaps between the evenly distributed second support blocks 28. By passing the traction steel wire rope 31 through the gaps and changing the number of winding turns of the traction steel wire rope 31 on the corresponding second support blocks 28, the length of the traction steel wire rope 31 can be indirectly changed, so as to adjust the adjustment range of the counterweight subsequently.

[0052] In this embodiment, the counterweight adjustment assembly 29 includes a moving groove 2904 formed in the second support plate 2603. A first counterweight 2901 is slidably installed in the moving groove 2904. A first spring 2903 is fixedly connected between the first counterweight 2901 and the second support plate 2603. A second guide rod 2905 is fixedly connected to the inner wall of the moving groove 2904. A first screw rod 2906 is fixedly connected to the bottom of the first counterweight 2901. A second counterweight 2907 is threadedly connected to the bottom of the first screw rod 2906. A second screw rod 2908 is fixedly connected to the bottom of the second counterweight 2907. When the first counterweight 2901 in the moving groove 2904 is pulled, the first counterweight 2901 will move straight under the guiding action of the second guide rod 2905, and the first spring 2903 will be compressed. The center-of-gravity position of the device will also change accordingly.

[0053] In this embodiment, a through hole 2902 for docking with the connecting ring 32 is formed in the first counterweight 2901. The connecting ring 32 is in the shape of an annular body with a notch on one side. The notch on the connecting ring 32 is located on the side close to the towing steel rope 31. The notch on the connecting ring 32 facilitates subsequent docking with the through hole 2902 on the first counterweight 2901, so that when the weight of the parts on one side is too large, the center of gravity can be automatically shifted to a position away from that side, realizing the function of automatically adjusting the center of gravity.

[0054] In this embodiment, the automatic positioning assembly 30 includes an outer frame 3001 slidably mounted around the second support plate 2603. A third guide rod 3002 is fixedly connected to the middle of the outer frame 3001. A second spring 3003 is fixedly connected between the third guide rod 3002 and the second support plate 2603. A third spring 3004 is fixedly connected between the outer frame 3001 and the second support plate 2603. A fourth guide rod 3005 is fixedly arranged on the outer frame 3001. A slider 3006 for supporting the second steel wire rope 14 is slidably mounted on the fourth guide rod 3005. A folding rod 3007 is fixedly connected to the top of the outer frame 3001. The folding rod 3007 is fixedly connected to the traction steel wire rope 31. After the second steel wire rope 14 abuts against the concave area of the slider 3006, as the second steel wire rope 14 is gradually tightened, after the slider 3006 is pressed, the second steel wire rope 14 will automatically push the slider 3006 to a proper position, so that the positions of the sliders 3006 corresponding to each second steel wire rope 14 are accurate, realizing the automatic positioning function. The fourth guide rod 3005 enables the slider 3006 to move straight. Since the weights of the parts are different, the compression degrees of the sliders 3006 are different, so the moving distances of the outer frame 3001 are also different. The second spring 3003 and the third spring 3004 on the third guide rod 3002 will be compressed. Subsequently, the outer frame 3001 can be reset by the second spring 3003 and the third spring 3004. When the folding rod 3007 moves on the second support plate 2603, it will pull the traction steel wire rope 31, and the greater the weight of the part on the corresponding side, the farther the traction steel wire rope 31 is stretched, thereby automatically adjusting the center of gravity of the device.

[0055] In this embodiment, the outer frame 3001, the third guide rod 3002, the fourth guide rod 3005 and the folding rod 3007 are fixedly connected as an integral structure. The folding rod 3007 and the second support plate 2603 are in mutual contact. When the outer frame 3001 is pressed, the folding rod 3007 will move smoothly on the second support plate 2603, ensuring the stability of the device during use.

[0056] Specifically, the present invention is a lifting tool for the construction of a profiled steel skeleton with automatic positioning. First, as Figures 1 - 7As shown in the figure, before hoisting, calculate the center of gravity of the component section according to the cross-sectional characteristics of the top and bottom openings of the component section in this section, and adjust the positions of the lifting points on each side of the spreader according to the center of gravity to ensure that the steel wire ropes, lifting lugs, and turnbuckle bolts 10 are vertically hoisted during the hoisting process. An inclinometer is arranged at the top of the spreader. During the hoisting process, adjust the turnbuckle bolts 10 to ensure that the forces on each point are uniform. Considering the safety of the overall hoisting of the component, the stressed steel skeleton + steel bar component is hoisted with ten lifting points, and the lifting points are set on the steel skeleton structure; the positioning stiffening skeleton + steel bar component is hoisted with twenty-four lifting points, and the lifting points are set on the flat connection channel steel 20 at the top of the skeleton. During the hoisting process, ensure that the top opening of the steel bar component is horizontal, and guy ropes are installed at the bottom corner points of the steel bar component. During hoisting, use the tower crane to conduct a preliminary trial hoisting of the component section first. During the preliminary trial hoisting, most of the steel wire ropes are straightened and start to bear force. At this time, check whether the suspension ropes at each lifting point are bearing force, and adjust the turnbuckle bolts 10 at the non-bearing force points to make the forces on each point uniform; after all the lifting points are adjusted to have uniform force, conduct a second trial hoisting. The second trial hoisting is lifted by 100 mm. During the second trial hoisting, pay attention to the coincidence of the overall center of gravity and the center of the lifting of the component section on the ground projection to ensure that the steel skeleton component section does not undergo torsional deformation during hoisting and transportation. At the same time, check the status of the slings, guy ropes, and tower crane. After confirmation, it can be hoisted out. When the component section is hoisted above the tower body, pause and stay still first. After the section is stable, slowly lower it, and use manpower to assist in adjustment; when the section is lowered to 100 mm away from the steel bar lapping, pause, align the guide pipe, and continue to lower it using the guide pipe positioning; when the steel bar cage contacts the steel bars of the already poured section, first align and connect the marked reference steel bars, and at the same time connect and fix the skeletons at the four corner points, and then connect the remaining steel bar joints. After the main steel bars are connected, the tower crane releases the hook and disconnects the connection between the spreader and the steel bar component section. After checking the usage of the spreader, prepare for the hoisting of the next section.

[0057] As Figures 8 - 18 shown, during the hoisting process of the spreader, first adjust the support range to the maximum, and then the automatic positioning component 30 can adaptively adjust the stretching length of the traction steel wire rope 31 at this place according to the weight of the component on one side of the device, so that the center of gravity of the device is as centered as possible. The first support block 27 and the second support block 28 are used to support the jack 2605. The second support block 28 cooperates with the guide wheel 33 to guide the traction steel wire rope 31. When the device is in use, shorten the jack 2605 below the top plate 2604. Under the guiding action of the first guide rod 2602, the second support plate 2603 moves upward above the first support plate 2601, and place the second steel wire rope 14 into the slider 3006 at the corresponding position. As Figure 11As shown, since there are gaps between multiple uniformly distributed second support blocks 28, the initial length of the towing steel cable 31 can be indirectly changed by passing the connecting ring 32 on the towing steel cable 31 through the gaps and changing the number of winding turns of the towing steel cable 31 on the corresponding second support blocks 28, so as to adjust the adjustment range of the counterweight subsequently. Pass the connecting ring 32 with a notch through the through hole 2902 on the first counterweight block 2901 closest to the folding rod 3007. When the second steel wire rope 14 abuts against the concave area of the slider 3006, after the second steel wire rope 14 is gradually tightened and the slider 3006 is pressed, the second steel wire rope 14 will automatically push the slider 3006 to a proper position, so that the positions of the sliders 3006 corresponding to each second steel wire rope 14 are accurate, realizing the automatic positioning function. The fourth guide rod 3005 enables the slider 3006 to move straight. Since the weights of the parts are different, the pressing degrees of the sliders 3006 are different, so the moving distances of the outer frame 3001 are also different. The second spring 3003 and the third spring 3004 on the third guide rod 3002 will be compressed. Subsequently, the outer frame 3001 can be reset by the second spring 3003 and the third spring 3004. When the folding rod 3007 moves on the second support plate 2603, it will pull the towing steel cable 31, and the greater the weight of the part on the corresponding side, the farther the towing steel cable 31 is stretched, and the farther the first counterweight block 2901 moves, thereby automatically adjusting the center of gravity of the device. When the first counterweight block 2901 in the moving groove 2904 is pulled, the first counterweight block 2901 will move straight under the guiding action of the second guide rod 2905, and the first spring 2903 is compressed, and the position of the center of gravity of the device will also change accordingly. The first screw rod 2906 below the second guide rod 2905 is butted against the second counterweight block 2907, and the second screw rod 2908 below the second counterweight block 2907 can connect multiple second counterweight blocks 2907 up and down, thereby changing the counterweight of the local area.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatically positioned steel frame construction sling, comprising a sling rod and a first steel wire rope (13), characterized in that: The sling rod comprises a main load-bearing beam (1), a secondary load-bearing beam (2) and a beam body (3); the upper end of the first steel wire rope (13) is connected to the tower crane hook by a hook; the main load-bearing beam (1) is provided with a main beam lifting lug (6); the lower end of the first steel wire rope (13) is connected to the main beam lifting lug (6) by a first bow-shaped shackle (7); a limit plate (5) is provided on the secondary load-bearing beam (2); a precision-rolled threaded steel bar (8) is installed on the beam body (3); an adjusting nut (9) is provided on the precision-rolled threaded steel bar (8); a second bow-shaped shackle (11) is provided below the adjusting nut (9); a second steel wire rope (11) is provided below the second bow-shaped shackle (11); 14), the upper end of the second steel wire rope (14) is connected to the lifting beam ear (4) arranged below the lifting beam body (3) through a second bow-shaped shackle (11); when lifting the steel bar segment, the lower end of the second steel wire rope (14) is connected to the rigid skeleton segment ear (12) through a basket bolt (10) and a third bow-shaped shackle (15), and the steel bar body (23), the rigid skeleton body (24) and the steel frame body (25) are arranged below the rigid skeleton segment ear (12); when lifting the steel and steel bar parts, the lower end of the second steel wire rope (14) is connected to the steel frame segment ear (16) through a basket bolt (10) and a third bow-shaped shackle (15); A support assembly (26) is provided at the bottom of the first steel wire rope (13), automatic positioning assemblies (30) are installed around the support assembly (26), a traction steel rope (31) is connected to the automatic positioning assembly (30), and a counterweight adjustment assembly (29) is provided on the support assembly (26); The support assembly (26) comprises a top plate (2604) fixedly connected to the bottom of the first steel wire rope (13); a first guide rod (2602) is fixedly connected below the top plate (2604); jacks (2605) located on both sides of the first guide rod (2602) are fixedly connected to the bottom of the top plate (2604); a first support plate (2601) is fixedly connected to the bottom of the first guide rod (2602); a second support plate (2603) is slidably mounted on the outer side of the first guide rod (2602); a second support block (28) is fixedly connected to the second support plate (2603); a first support block (27) is fixedly connected above the second support block (28); and the first support block (27) and the jacks (2605) are fixedly connected; The counterweight adjustment assembly (29) comprises a movable groove (2904) provided on the second support plate (2603), a first counterweight block (2901) being slidably mounted in the movable groove (2904), a first spring (2903) being fixedly connected between the first counterweight block (2901) and the second support plate (2603), a second guide rod (2905) being fixedly connected to the inner wall of the movable groove (2904), a first screw rod (2906) being fixedly connected to the bottom of the first counterweight block (2901), a second counterweight block (2907) being threadedly connected to the bottom of the first screw rod (2906), and a second screw rod (2908) being fixedly connected to the bottom of the second counterweight block (2907).

2. The automatic positioning steel frame construction hanger according to claim 1, characterized in that: The suspension beam lifting lug (4) is a steel frame lifting lug (17) or a rigid frame lifting lug (19); a steel frame clamp (18) is installed on the steel frame lifting lug (17); bolt connection holes (22) are provided on the steel frame clamp (18) and the rigid frame lifting lug (19); a bolt connection hole (22) is provided on the rigid frame lifting lug (19); a parallel channel steel (20) is installed on the rigid frame lifting lug (19); and a force transmission angle steel (21) is connected to the parallel channel steel (20).

3. The automatic positioning steel frame construction hanger according to claim 1, characterized in that: The second support blocks (28) are evenly distributed below the first support blocks (27); the traction steel rope (31) is connected to the connection ring (32) through the second support blocks (28) and the guide wheels (33); and the guide wheels (33) are rotatably connected to the second support plate (2603).

4. The automatic positioning steel frame construction hanger according to claim 3, characterized in that: The first counterweight block (2901) is provided with a through hole (2902) for docking with the connecting ring (32); the connecting ring (32) is in the shape of a circular ring with a notch on one side; the notch on the connecting ring (32) is located on a side close to the traction steel rope (31).

5. The automatic positioning steel frame construction lifting device according to claim 4, characterized in that: The automatic positioning assembly (30) comprises an outer frame (3001) slidably mounted around the second support plate (2603); a third guide rod (3002) is fixedly connected in the middle of the outer frame (3001); a second spring (3003) is fixedly connected between the third guide rod (3002) and the second support plate (2603); a third spring (3004) is fixedly connected between the outer frame (3001) and the second support plate (2603); a fourth guide rod (3005) is fixedly arranged on the outer frame (3001); a slider (3006) for supporting the second steel wire rope (14) is slidably mounted on the fourth guide rod (3005); a folding rod (3007) is fixedly connected to the top of the outer frame (3001); and the folding rod (3007) is fixedly connected to the traction steel rope (31).

6. The automatic positioning steel frame construction lifting device according to claim 5, characterized in that: The outer frame (3001), the third guide rod (3002), the fourth guide rod (3005) and the folding rod (3007) are fixedly connected to form an integral structure, and the folding rod (3007) and the second support plate (2603) are in contact with each other.

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