Automatic-positioning lifting appliance for structural steel framework construction

Abstract

The invention relates to the technical field of construction lifting appliances, and provides an automatic positioning lifting appliance for structural steel framework construction, which comprises a lifting appliance lifting rod and a first steel wire rope, the lifting appliance lifting rod comprises a main bearing beam, a secondary bearing beam and a lifting beam body, and a lute buckle at the upper end of the first steel wire rope is connected with a tower crane lifting hook; the lower end of the first steel wire rope is connected with a lifting beam lifting lug arranged below the lifting beam body through a first bow shackle, a main beam lifting lug is arranged on the main bearing beam, a limiting plate is arranged on the secondary bearing beam, a precisely-rolled deformed steel bar is installed on the lifting beam body, an adjusting nut is arranged on the precisely-rolled deformed steel bar, and the adjusting nut is connected with the lifting beam lifting lug through a second bow shackle. And a second bow shackle is arranged below the adjusting nut. By means of the technical scheme, the problem that an existing lifting appliance cannot meet the structural requirements of two parts including a complex stress type steel framework and reinforcing steel bars and a locating stiff framework and reinforcing steel bars in a lifting tower column is solved.

Description

Technical Field

[0001] The invention relates to the technical field of construction hoists, and in particular to an automatically positioned hoist for steel frame construction. Background Art

[0002] In order to speed up the construction of the main tower of the bridge and improve production efficiency, the construction method of steel bar componentization or overall hoisting is often used in the main tower reinforcement construction process. The load-bearing steel skeleton + steel bars and the positioning rigid skeleton + steel bars are two types of component segments suitable for the main tower reinforcement hoisting. For variable-section tower columns, the weight and center of gravity of each segment 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, during the hoisting process, the deviation of the center of gravity and the projection of the lifting center of the segment component on the ground will cause the component to tip over or even deform during the hoisting process, which will have an adverse effect on the docking and installation of the steel bars.

[0003] The lifting forms of existing steel bar component hoists can be roughly classified into arranging annular fixing components on the outside of the steel bar to directly lift the steel bar; arranging connectors on the top of the steel bar to lift the connectors; connecting the steel bar into a whole with a rigid frame, and lifting the top of the rigid frame to connect it flat. Although the current hoist also adopts a frame structure, the above hoisting form cannot meet the needs of lifting the load-bearing steel frame + steel bars at the same time. During the componentized construction of the main tower steel bars, usually a single type of rigid frame is used as the positioning device for steel bar binding throughout the tower, and the structural form of the lifting point remains unchanged. Therefore, there are limitations on the lifting objects, and it cannot meet the needs of lifting the complex load-bearing steel frame + steel bars and positioning the rigid frame + steel bars inside the tower column.

[0004] The invention patent with publication number CN117486069A discloses a lifting device, including: a supporting structure; an adjusting member, which is sleeved on the supporting structure; a first limiting structure, which is connected to one end of the supporting structure and is used to limit the axial position of the sleeve; a second limiting structure, which is hinged to the side wall of the adjusting member and is used to limit the radial position of the sleeve; a connecting structure, which is connected to the supporting structure, and the connecting structure is used to connect to the sling; wherein the adjusting member is used to adjust the position of the second limiting structure relative to the sleeve. When the sleeve is sleeved on the supporting structure, the axial position of the sleeve is limited by the first limiting structure. And the second limiting structure is adjusted by the adjusting member so that the second limiting structure abuts against the inner wall of the sleeve to limit the radial position of the sleeve. The radial positioning and axial positioning of the sleeve installation are completed, which is convenient for subsequent lifting operations, reduces the difficulty of assembly, and saves the time cost and production cost of ship construction. Although the above-mentioned device can achieve radial positioning and axial positioning, it cannot be adaptively adjusted according to the overall center of gravity position when in use, and its stability is insufficient. In addition, the existing slings cannot automatically locate the support position according to the position of the lifting rope during lifting, and cannot adaptively adjust the center of gravity position of the device according to the pressure of the support position to ensure the stability of the device. Summary of the invention

[0005] The present invention proposes an automatically positioned lifting device for steel frame construction, which solves the problem that the existing lifting device cannot meet the structural requirements of the two components of the complex load-bearing steel frame + steel bars and the positioning rigid frame + steel bars inside the lifting tower column.

[0006] The technical solution of the present invention is as follows: A self-positioning sling for steel frame construction, comprising a sling rod and a first steel wire rope, wherein the sling rod comprises a main load-bearing beam, a secondary load-bearing beam and a sling beam body, wherein the upper end of the first steel wire rope is connected to a tower crane hook by a lute buckle, and the lower end of the first steel wire rope is connected to a sling beam lug arranged under the sling beam body by a first bow-shaped shackle, wherein the main load-bearing beam is provided with a main beam lug, the secondary load-bearing beam is provided with a limit plate, the sling beam body is installed with finely rolled threaded steel, and the finely rolled threaded steel is provided with An adjusting nut is provided below the adjusting nut, and a second bow-shaped shackle is provided below the second bow-shaped shackle; when lifting the steel bar segment, the lower end of the second steel wire rope is connected to the rigid skeleton segment lifting ear through a basket bolt and a third bow-shaped shackle, and the steel bar body, the rigid skeleton body and the steel frame body are provided below the rigid skeleton segment lifting ear; when lifting steel sections and steel bar components, the lower end of the second steel wire rope is connected to the steel frame segment lifting ear through a basket bolt and a third bow-shaped shackle.

[0007] As a preferred solution of the present invention, the hanging beam ear is a steel frame ear or a rigid frame ear; a steel frame clamp is installed on the steel frame ear, and bolt connection holes are provided on the steel frame clamp and the rigid frame ear, and bolt connection holes are provided on the rigid frame ear, and a flat channel steel is installed on the rigid frame ear, and a force transmission angle steel is connected to the flat channel steel.

[0008] As a preferred solution of the present invention, a support assembly is provided at the bottom of the first steel wire rope, automatic positioning assemblies are 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.

[0009] As a preferred solution 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 fixedly connected to the bottom of the top plate, a jack located on both sides of the first guide rod fixedly connected to the bottom of the top plate, a first support plate fixedly connected to the bottom of the first guide rod, a second support plate slidably mounted on the outer side of the first guide rod, a second support block fixedly connected to the second support plate, a first support block fixedly connected to the top of the second support block, and the first support block and the jack are fixedly connected.

[0010] As a preferred solution of the present invention, the second support blocks are evenly distributed below the first support blocks, the traction steel rope is connected to the connecting ring through the second support blocks and the guide wheels, and the guide wheels and the second support plates are rotatably connected.

[0011] As a preferred solution of the present invention, the counterweight adjustment assembly includes a movable groove opened on the second support plate, a first counterweight block is slidably installed in the movable groove, a first spring is fixedly connected between the first counterweight block and the second support plate, a second guide rod is fixedly connected to the inner wall of the movable groove, a first screw is fixedly connected to the bottom of the first counterweight block, a second counterweight block is threadedly connected to the bottom of the first screw, and a second screw is fixedly connected to the bottom of the second counterweight block.

[0012] As a preferred solution of the present invention, a through hole for docking with the connecting ring is provided on the first counterweight block, and the connecting ring is in the shape of a circular ring with a notch on one side, and the notch on the connecting ring is located on the side close to the traction steel rope.

[0013] As a preferred solution of the present invention, the automatic positioning component 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, and the folding rod is fixedly connected to the traction steel rope.

[0014] As a preferred solution of the present invention, the outer frame, the third guide rod, the fourth guide rod and the folding rod are fixedly connected to form an integral structure, and the folding rod and the second support plate are in contact with each other.

[0015] The working principle and beneficial effects of the present invention are: 1. The hoisting device has a simple structure, with H-shaped steel rods as the main structure for component hoisting operations. The vertical length of the wire rope is adjusted by a basket bolt, and the load of the component segment is evenly distributed to each wire rope, which reduces the deformation of the component segment during the hoisting process and improves the docking quality of the steel bars of adjacent segments.

[0016] 2. Different forms of lifting lug structures are used according to the differences in lifting parts. Rigid skeleton lifting lugs are set on the flat channel steel and force transmission angle steel to increase and enhance the structural stability; steel skeleton lifting lugs are bolted to steel joints, and the strength of both types of lifting lugs is reliable.

[0017] 3. The sling adopts adjusting nuts and finely rolled threaded steel to realize the movement and fixation of the sling beam, so as to realize the movement of the sling point in the direction perpendicular to the tower wall; the sling optimizes the sling point layout according to the needs to adapt to the change of the sling point position in the direction parallel to the tower wall. The sling can be used for the lifting of each segment and has the characteristics of strong practicality.

[0018] 4. By deepening the design of the lifting lug form and optimizing the spacing of the lifting lugs, the lifting device and lifting method of the present invention can be applied to the lifting construction of steel bar segments of tower columns that use a combination of load-bearing steel frame + steel bars and positioning rigid frame + steel bars, making the lifting device universally applicable, avoiding repeated input of materials, and effectively improving work efficiency.

[0019] 5. The functions of automatic positioning and center of gravity adjustment are realized through the support assembly, counterweight adjustment assembly and automatic positioning assembly on the device. The device can install the steel wire rope at the corresponding position into the recessed structure in the slider. The pressure gravity of the component will cause the steel wire rope at the corresponding position to automatically adjust the slider to the specified position, thereby realizing the positioning function and ensuring that the slider position corresponding to each steel wire rope is correct, so that the pressure of the slider can be used to push the outer frame later. The outer frame can pull the traction steel rope through the folding rod during the movement, and the hook at the end of the traction steel rope can be hung in the through hole of the first counterweight block at different positions. When the weight of the component on one side is heavier, the greater the pressure on the slider at this position, the farther the traction steel rope is pulled during the movement of the slider and the outer frame. 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, thereby enhancing the adaptability of the device.

[0020] 6. The device is provided with a first support block and a second support block. Since the second support blocks are evenly distributed below the first support block and there is a gap between two adjacent second support blocks, the connecting ring can be passed through the gap and wrapped around the corresponding second support block for different numbers of circles. At this time, the connecting ring is hung on the first counterweight block. The counterweight effect of the device can be adjusted to ensure that the center of gravity of the device is adjusted accurately enough. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of an automatic positioning steel frame construction hanger of the present invention; Figure 2 It is a schematic diagram of the connection structure between the first steel wire rope and the first bow-shaped shackle of the present invention; Figure 3 It is a schematic diagram of the rigid skeleton segment hanging ear structure of the present invention; Figure 4 It is a schematic diagram of the connection structure between the steel frame segment lifting lug and the steel bar body of the present invention; Figure 5 It is a schematic diagram of the structure of the third bow-shaped shackle of the present invention; Figure 6 It is a schematic diagram of the steel frame lifting lug structure of the present invention; Figure 7 It is a schematic diagram of the rigid skeleton hanging ear structure of the present invention; Figure 8 It is a schematic diagram of the connection structure of the precision-rolled threaded steel bar and the adjusting nut of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the first support plate and the first guide rod of the present invention; Fig.10 yes Fig. 9 A magnified schematic diagram of the structure at center A; Fig.11 is a schematic diagram of a top view of the structure of the second support plate of the present invention; Fig.12 yes Fig.11 A magnified schematic diagram of the structure at B in the middle; Fig.13 yes Fig.11 A magnified schematic diagram of the structure at C in the middle; Fig.14 It is a schematic diagram of the connection structure between the second support plate and the first guide rod of the present invention; Fig.15 yes Fig.14 A magnified schematic diagram of the structure at D in the middle; Fig.16 yes Fig.14 A magnified schematic diagram of the structure at E in the middle; Fig.17 It is a schematic diagram of the connection structure between the first counterweight block and the first screw rod of the present invention; Fig.18 yes Fig.17 A magnified schematic diagram of the structure at F in the middle.

[0023] Figure numerals: 1. Main load-bearing beam; 2. Secondary load-bearing beam; 3. Hanging beam body; 4. Hanging beam lifting lug; 5. Limiting plate; 6. Main beam lifting lug; 7. First bow-shaped shackle; 8. Finely rolled threaded steel; 9. Adjusting nut; 10. Turnbuckle bolt; 11. Second bow-shaped shackle; 12. Rigid skeleton segment lifting lug; 13. First steel wire rope; 14. Second steel wire rope; 15. Third bow-shaped shackle; 16. Section steel skeleton segment lifting lug; 17. Section steel skeleton lifting lug; 18. Section steel clamp; 19. Rigid skeleton lifting lug; 20. Flat channel steel; 21. Force transmission angle steel; 22. Bolt connection hole; 23. Steel bar body; 24. Rigid skeleton body; 25. Section 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; 2902, through hole; 2903, first spring; 2904, movable groove; 2905, second guide rod; 2906, first screw; 2907, second counterweight; 2908, second screw; 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, traction rope; 32, connecting ring; 33, guide wheel. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1 like Figure 1-Figure 18As shown, this embodiment proposes an automatically positioned sling for steel frame construction, including a sling rod and a first steel wire rope 13, the sling rod includes 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 through a lute buckle, and the lower end of the first steel wire rope 13 is connected to the beam lug 4 arranged under the beam body 3 through a first bow-shaped shackle 7, the main load-bearing beam 1 is provided with a main beam lug 6, the secondary load-bearing beam 2 is provided with a limiting plate 5, the beam body 3 is installed with a fine-rolled threaded steel 8, the fine-rolled threaded steel 8 is provided with an adjusting nut 9, a second bow-shaped shackle 11 is provided below the adjusting nut 9, and a second steel wire rope 14 is provided below the second bow-shaped shackle 11; when hoisting a steel bar segment, the lower end of the second steel wire rope 14 is connected to the rigid skeleton segment through a basket bolt 10 and a third bow-shaped shackle 15. The lifting lug 12 is connected, and a steel bar body 23, a rigid frame body 24 and a steel frame body 25 are arranged below the rigid frame segment lifting lug 12; when lifting steel and steel bar components, the lower end of the second steel wire rope 14 is connected to the steel frame segment lifting lug 16 through the basket bolt 10 and the third bow-shaped shackle 15; the sling adjusts the position of the adjusting nut 9 on the fine-rolled threaded steel 8 to achieve the change of the position of the hanging beam body 3 to adapt to the expansion and contraction of the steel bar components; the center of gravity of the component is adjusted by adjusting the basket bolt 10 to solve the problem of component inclination and the deviation between the center of gravity of the component and the projection of the lifting center on the ground; by optimizing and adjusting the layout of the hanging beam lifting lug 4, it is guaranteed that the sling has the ability to lift steel, steel bars and steel bar component segments; as the steel bar components expand and contract, the position of the hanging point is changed by cutting the interference part at the end of the hanging beam body 3 on site.

[0026] Example 2 like Figure 1-Figure 18 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes an automatically positioned lifting device for steel frame construction.

[0027] In this embodiment, the hanging beam ear 4 is a steel frame ear 17 or a rigid frame ear 19; a steel frame clamp 18 is installed on the steel frame ear 17, and bolt connection holes 22 are provided on the steel clamp 18 and the rigid frame ear 19, and bolt connection holes 22 are provided on the rigid frame ear 19, and a flat channel steel 20 is installed on the rigid frame ear 19, and a force transmission angle steel 21 is connected to the flat channel steel 20, and the force transmission angle steel 21 can enhance the stability of the overall structure. The device can switch different ears for use as needed.

[0028] In this embodiment, a support assembly 26 is provided at the bottom of the first steel wire rope 13, and automatic positioning assemblies 30 are installed around the support assembly 26. A traction steel 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, and then the automatic positioning assembly 30 can adaptively adjust the stretching length of the traction steel rope 31 at that location according to the weight of the components on one side of the device, so that the center of gravity of the device is as centered as possible.

[0029] 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, a jack 2605 located on both sides of the first guide rod 2602 is 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, the first support block 27 and the jack 2605 are fixedly connected, the first support block 27 and the second support block 28 on the device are used to support the jack 2605, the jack 2605 is shortened before use, and the second support plate 2603 moves above the first support plate 2601 under the guidance of the first guide rod 2602, so that the support height can be adjusted according to the height adaptability of the component later.

[0030] In this embodiment, the second support blocks 28 are evenly distributed below the first support blocks 27, and the traction steel rope 31 is connected to the connecting ring 32 through the second support blocks 28 and the guide wheel 33. The guide wheel 33 and the second support plate 2603 are rotatably connected. There are gaps between the multiple evenly distributed second support blocks 28. The traction steel rope 31 can be passed through the gaps and the number of winding circles of the traction steel rope 31 on the corresponding second support blocks 28 can be changed indirectly to facilitate the subsequent adjustment of the adjustment range of the counterweight.

[0031] In this embodiment, the counterweight adjustment assembly 29 includes a movable groove 2904 opened on the second support plate 2603, and a first counterweight block 2901 is slidably installed in the movable groove 2904. A first spring 2903 is fixedly connected between the first counterweight block 2901 and the second support plate 2603. A second guide rod 2905 is fixedly connected to the inner wall of the movable groove 2904. A first screw 2906 is fixedly connected to the bottom of the first counterweight block 2901, and a second counterweight block 2907 is threadedly connected to the bottom of the first screw 2906. A second screw 2908 is fixedly connected to the bottom of the second counterweight block 2907. When the first counterweight block 2901 in the movable groove 2904 is pulled, the first counterweight block 2901 will move straight under the guidance of the second guide rod 2905, the first spring 2903 is compressed, and the center of gravity position of the device will also change accordingly.

[0032] In this embodiment, a through hole 2902 for docking with the connecting ring 32 is provided on the first counterweight block 2901. The connecting ring 32 is shaped like a circular ring with a notch on one side. The notch on the connecting ring 32 is located on the side close to the traction steel rope 31. The notch on the connecting ring 32 facilitates the subsequent docking with the through hole 2902 on the first counterweight block 2901, so that when the weight of the components on one side is too large, the center of gravity will be automatically shifted to a position away from that side, thereby realizing the function of automatically adjusting the center of gravity.

[0033] 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, and a spring 3006 is slidably mounted on the fourth guide rod 3005 for supporting The slider 3006 supporting the second steel wire rope 14 is fixedly connected with a folding rod 3007 on the top of the outer frame 3001. The folding rod 3007 is fixedly connected to the traction steel wire 31. When 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, the slider 3006 is compressed, and the second steel wire rope 14 automatically pushes the slider 3006 to a suitable position, so that the position of the slider 3006 corresponding to each second steel wire rope 14 is accurate, and the automatic positioning function is realized. The fourth guide rod 3005 enables the slider 3006 to move straight. The weight of the parts is different, the degree of pressure on the slider 3006 is different, and therefore the moving distance of the outer frame 3001 is also different. The second spring 3003 and the third spring 3004 on the third guide rod 3002 will be compressed, and the outer frame 3001 can be reset later 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 rope 31, and the greater the weight of the parts on the corresponding side, the farther the traction rope 31 is stretched, thereby automatically adjusting the center of gravity of the device.

[0034] 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 to form an integral structure, and the folding rod 3007 and the second support plate 2603 fit each other. When the outer frame 3001 is under pressure, the folding rod 3007 will move smoothly on the second support plate 2603 to ensure the stability of the device when in use.

[0035] Specifically, the present invention is an automatic positioning steel frame construction hanger, first, as Figure 1-Figure 7As shown, before hoisting, the center of gravity of the segment component is calculated according to the cross-sectional characteristics of the top and bottom of the segment component, and the position of each lifting point on each side of the hoist is adjusted according to the center of gravity to ensure that the wire rope, lifting lug, and basket bolt 10 are hoisted vertically during the hoisting process. An inclinometer is arranged on the top of the hoist. During the hoisting process, the basket bolt 10 is adjusted to ensure that the force is evenly applied to each point. Considering the safety of the overall hoisting of the component, the load-bearing steel frame + steel bar component hoisting adopts ten hoisting points, and the hoisting points are set on the steel frame structure; the positioning rigid frame + steel bar component hoisting adopts twenty-four hoisting points, and the hoisting points are set on the flat channel steel 20 at the top of the frame. During the hoisting process, the top of the steel bar component is ensured to be horizontal, and the wind rope is installed at each corner point of the bottom of the steel bar component. During hoisting, it is necessary to use a tower crane to carry out an initial trial hoisting of the component segment. The initial trial hoisting will make most of the wire ropes straighten and begin to bear stress. At this time, check whether the hoisting ropes at each lifting point are under stress, and adjust the basket bolts 10 at the non-stressed position to make each point evenly stressed. After all the lifting points are adjusted to bear stress evenly, a secondary trial hoisting will be carried out. The secondary trial hoisting will be lifted 100mm. In the secondary trial hoisting, attention should be paid to the coincidence of the overall center of gravity of the component segment and the projection of the lifting center on the ground to ensure that the steel frame component segment does not produce torsional deformation during the lifting process. At the same time, check the status of the lifting rigging, guy ropes and tower crane, and it can be hoisted only after confirmation. When the component segment is hoisted to the top of the tower, it is first paused and left to stand still. After the segment is stable, it is slowly lowered and adjusted with human assistance. When the segment is lowered to 100mm away from the overlap of the steel bars, it is paused, the guide tube is aligned, and the guide tube is used to position and continue to be lowered. When the steel cage and the steel bars of the cast segment are in contact, the marked reference steel bars are aligned and connected first, and the skeletons at the four corner points are connected and fixed at the same time, and the remaining steel bar joints are connected later. After the main reinforcement connection is completed, the tower crane is unhooked to release the connection between the hoist and the steel component segment. After checking the use of the hoist, prepare for the hoisting of the next segment.

[0036] like Figure 8-Figure 18 As shown, during the lifting process, the lifting device first adjusts the support range to the maximum, and then the automatic positioning component 30 can adaptively adjust the stretching length of the traction steel rope 31 at one side of the device according to the weight of the parts on that side, 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, and the second support block 28 cooperates with the guide wheel 33 to guide the traction steel rope 31. When the device is in use, the jack 2605 under the top plate 2604 is shortened, and the second support plate 2603 moves to the top of the first support plate 2601 under the guidance of the first guide rod 2602, and the second steel wire rope 14 is placed in the slider 3006 at the corresponding position. Fig.11As shown, since there are gaps between the evenly distributed multiple second support blocks 28, the initial length of the traction steel rope 31 can be indirectly changed by passing the connecting ring 32 on the traction steel rope 31 through the gap and changing the number of windings of the traction steel rope 31 on the corresponding second support block 28, so as to adjust the adjustment range of the counterweight later, and pass the connecting ring 32 with a gap 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, as the second steel wire rope 14 is gradually tightened, the slider 3006 is compressed, and the second steel wire rope 14 automatically pushes the slider 3006 to a suitable position, so that the position of the slider 3006 corresponding to each second steel wire rope 14 is accurate, and the automatic positioning function is realized, and the fourth guide rod 3005 makes the slider 3006 move straight. The weight of the parts is different, and the degree of compression of the slider 3006 is different, so the moving distance of the outer frame 3001 is also different. The second spring 3003 and the third spring 3004 on the third guide rod 3002 will be compressed, and the outer frame 3001 can be reset later 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 rope 31, and the greater the weight of the parts on the corresponding side, the farther the traction steel rope 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 guidance of the second guide rod 2905, the first spring 2903 is compressed, and the center of gravity position of the device will also change accordingly. By docking the first screw rod 2906 under the second guide rod 2905 with the second counterweight block 2907, the second screw rod 2908 under the second counterweight block 2907 can connect the plurality of second counterweight blocks 2907 up and down, thereby changing the counterweight of a local area.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should 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 through a hook buckle; the lower end of the first steel wire rope (13) is connected to a beam lug (4) arranged under the beam body (3) through a first bow-shaped shackle (7); the main load-bearing beam (1) is provided with a main beam lug (6); the secondary load-bearing beam (2) is provided with a limit plate (5); the beam body (3) is installed with a finely rolled threaded steel bar (8); the finely rolled threaded steel bar (8) is provided with an adjusting nut (9); a second screw threaded steel bar (9) is provided below the adjusting nut (9); A bow-shaped shackle (11), wherein a second steel wire rope (14) is arranged below the second bow-shaped shackle (11); when lifting a steel bar segment, the lower end of the second steel wire rope (14) is connected to a rigid frame segment lifting lug (12) through a turnbuckle (10) and a third bow-shaped shackle (15); a steel bar body (23), a rigid frame body (24) and a steel frame body (25) are arranged below the rigid frame segment lifting lug (12); when lifting steel and steel bar components, the lower end of the second steel wire rope (14) is connected to a steel frame segment lifting lug (16) through a turnbuckle (10) and a third bow-shaped shackle (15).

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: 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).

4. The automatic positioning steel frame construction hanger according to claim 3, characterized in that: 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.

5. The automatic positioning steel frame construction lifting device according to claim 4, 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).

6. The automatic positioning steel frame construction lifting device according to claim 5, characterized in that: 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).

7. The automatic positioning steel frame construction hanger according to claim 6, 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).

8. The automatic positioning steel frame construction lifting device according to claim 7, 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).

9. The automatic positioning steel frame construction lifting device according to claim 8, 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.

Images