Hoisting device for lifting large-span grid structure
By designing a lifting device for lifting a large span mesh structure including columns, mobile stations, cross plates, lifting cow legs and hydraulic lifters, the problems of low safety, poor convenience and long construction period of the large span mesh structure lifting device in the prior art are solved, and the effect of improving construction safety, convenience and construction period is achieved.
Patent Information
- Application Number
- CN202422408956.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing lifting devices with large span grid structures have problems such as low safety, poor convenience and long construction period during construction, especially when the commercial mezzanine concrete structure and steel structure are cross-constructed, which is risky and difficult to operate.
A lifting device for lifting a large-span mesh frame structure is designed, including columns, mobile stations, cross plates, lifting cow legs, lifting frames, hydraulic lifters and lifting mechanisms. The device can adapt to the stress requirements of different directions and angles through cross-set vertical and inclined holes, as well as a variety of cow legs in different settings, and improve the load-bearing capacity and safety of the structure.
The device improves the safety and convenience of construction, reduces construction period, enhances the overall stability and reliability of the structure, and adapts to the needs of complex construction environments and different types of large-span grid structure improvements.
Smart Images
Figure CN223032884U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel grid equipment, in particular to a hoisting device for lifting a long-span grid structure. Background Technique
[0002] In the construction of buildings such as high-speed railway station houses, the construction of special-shaped long-span steel grids is crucial. Among them, the lifting of the steel structure roof of the station house is the key and difficult point of the construction. Especially when the concrete structure of the commercial mezzanine and the steel structure are under cross-construction, the risk is relatively high. At present, most of the commonly used lifting joints adopt the method of embedded plates, but this method has many disadvantages.
[0003] On the one hand, the method of embedded plates cannot effectively avoid the risks brought by the cross-construction of the concrete structure of the commercial mezzanine and the steel structure. During the cross-construction process, problems such as the deviation and damage of the lifting joint position are likely to occur. This not only affects the lifting accuracy of the steel structure roof but also poses a threat to construction safety. At the same time, the construction operation is difficult and the convenience is low, and a large amount of manpower, material resources and time are required for adjustment and repair.
[0004] On the other hand, the traditional construction method requires the completion of the concrete structure construction before lifting, which has a great impact on the construction period. Since the construction period of the concrete structure is relatively long and the steel structure lifting must wait for its completion, the progress of the entire project is delayed. This sequential construction method lacks coherence, resulting in low construction efficiency, increased project costs and risks. In addition, the existing hoisting devices for long-span grid structures are directly erected in place, and then the hoisting devices are installed on the columns for hoisting. When hoisting a long-span grid, it cannot be moved, resulting in poor flexibility during the installation and hoisting of the long-span grid. Content of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the utility model provides a hoisting device for lifting a long-span grid structure to improve the safety and convenience of construction and effectively save the construction period.
[0006] To solve the above problems, the technical solution adopted by the present utility model is as follows: A hoisting device for lifting a large-span grid structure, characterized in that: it includes a column, and a cross plate is arranged at the top position of the column; a moving platform is arranged at the lower end of the column, and the moving platform is fixedly connected to the column; vertical holes and inclined holes are arranged on the cross plate, and the vertical holes and the inclined holes are arranged in a cross manner. A plurality of lifting brackets are arranged on the cross plate, and a first bracket and a second bracket are arranged on the cross plate; the first bracket is perpendicular to the cross plate, and the second bracket is inclined to the cross plate; lifting brackets are fixedly arranged at the upper ends of the lifting brackets, the first bracket and the second bracket, and a support column is arranged at the upper end of the lifting bracket, and a plurality of lifting devices are fixedly connected to the support column; the support column is parallel to the lifting bracket and the cross plate, and the length of the support column is greater than the sum of the lengths of the cross plate and the lifting bracket; a hydraulic lifter is arranged on the support column, a hoisting mechanism is arranged at the lower end of the hydraulic lifter, and a plurality of hoisting limit rods are arranged on the hoisting mechanism.
[0007] The beneficial effects of this solution are as follows: The cross plate arranged at the top of the column provides a stable basic connection point for the entire structure, enhancing the overall stability and reliability of the device, ensuring that it can withstand huge loads during the lifting process of the large-span grid structure. The moving platform at the lower end of the column facilitates the flexible movement of the device to the designated position, improving the convenience and efficiency of construction, reducing the time and cost of on-site layout. The vertically arranged holes and inclined holes on the cross plate, as well as the brackets with various different setting directions, can adapt to the force requirements in different directions and angles, making the lifting force distribution more uniform, improving the load-bearing capacity and safety of the structure, and being able to adapt to complex construction environments and the lifting requirements of different types of large-span grid structures, having broad application prospects and practical value.
[0008] Furthermore, vertical holes and inclined holes are arranged on the cross plate, and the vertical holes and the inclined holes are arranged in a cross manner. This cross arrangement of holes can provide connection and fixing points in multiple directions, making the connection between the cross plate and components such as the lifting brackets, the first bracket, and the second bracket more stable and reliable. The holes in different directions can withstand forces from different angles, thereby effectively dispersing the stress and improving the load-bearing capacity of the cross plate. The cross arrangement of the vertical holes and the inclined holes increases the contact area and the degree of interlocking between the cross plate and the surrounding concrete, further enhancing the anchoring performance of the cross plate in the concrete and improving the stability and safety of the entire hoisting device.
[0009] Furthermore, the first corbel and the second corbel are respectively fixedly connected with the inclined holes and vertical holes on the cross plate through the first connecting rod and the second connecting rod. The fixed connection method of corresponding cross - matching ensures the tightness and stability of the connection. Whether under static or dynamic load, it can effectively prevent the relative displacement and loosening between the corbel and the cross plate, providing a solid foundation for the entire hoisting device, ensuring the stability and safety of the large - span grid structure during the lifting process. The cooperation between the inclined holes and vertical holes and the corresponding connecting rods can disperse stress from different directions. This enables the load to be more evenly distributed on the cross plate and the corbel, avoiding structural damage caused by excessive local stress, and improving the load - bearing capacity and durability of the entire structure.
[0010] Furthermore, the first connecting rod and the second connecting rod corresponding to the first corbel and the second corbel are cross - arranged on the cross plate. The cross - arrangement enhances the integrity and stability of the structure, enabling the connecting rods to support and restrict each other, forming a stable network, effectively resisting external forces from all directions, and improving the stability of the entire device under complex working conditions. When bearing the weight of the large - span grid, the load can be more widely transmitted to the cross plate through the cross - arranged connecting rods, avoiding stress concentration in a certain area, thereby reducing the risk of local damage and extending the service life of the device.
[0011] Furthermore, the two ends of the lifting corbel near the column are arranged in an arc structure. When lifting a large - span grid, the lifting corbel will bear a large load. The arc - shaped end can make the stress more evenly distributed on the corbel, reducing the stress concentration phenomenon, lowering the risk of the corbel breaking or deforming, and improving its load - bearing capacity and service life. The arc - shaped structure increases the contact area and fit with the column. This enables the lifting corbel to work better with the column, improving the stability and rigidity of the entire structure, reducing the swaying and displacement during the lifting process, and ensuring the accuracy and safety of the lifting operation.
[0012] Furthermore, a plurality of strengthening steel frames are arranged on the lifting frame and fixedly connected with the lifting steel frame. The existence of a plurality of strengthening steel frames can share and bear the huge load from the grid structure, effectively preventing the lifting frame from bending, twisting or breaking during the lifting process, ensuring the safety of the lifting operation. The fixed connection between the strengthening steel frame and the lifting steel frame forms a more stable overall structure, reducing the swaying and deformation caused by uneven stress during the lifting process, and ensuring that the grid structure can be smoothly and accurately lifted to the predetermined position.
[0013] Furthermore, the lifting device includes a hydraulic lifter, a steel cable and a hoisting mechanism, wherein the hoisting mechanism is connected to the hydraulic lifter via the steel cable, and the combination of the hoisting mechanism and the steel cable can effectively disperse and withstand the tension during the lifting process. The hoisting mechanism can ensure that the connection between the steel cable and the hydraulic lifter is firm and reliable, preventing slippage or loosening under high load, thereby ensuring the safety of the lifting operation.
[0014] Furthermore, there are two lifting devices, which are respectively arranged at the two ends of the support column. The two lifting devices are respectively located at the two ends of the support column, which can make the lifting force act on the grid structure more evenly, reduce the deformation or damage of the grid caused by uneven force, and ensure the integrity and accuracy of the grid structure during the lifting process.
[0015] Furthermore, the support column lifting corbel and the cross plate are arranged in parallel, and the length of the support column is greater than the sum of the lengths of the cross plate and the lifting corbel. During the lifting process, the load can be evenly distributed along the parallel structure, reducing local deformation or damage caused by uneven force, and improving the stability and reliability of the entire structure. The longer support column can better disperse the weight from the grid, reduce the pressure per unit area, and reduce excessive reliance on the cross plate and the lifting corbel, thereby extending the service life.
[0016] Furthermore, the hoisting mechanism includes a hoisting body, a hoisting limit rod, and a rotating ring. The hoisting body is fixedly connected to the steel cable. The hoisting body is provided with a rotating ring that is rotatably connected to the hoisting body. A hoisting limit rod is fixedly provided on the rotating ring. The rotating ring is rotatably connected to the hoisting body so that the hoisting limit rod can rotate freely relative to the hoisting body. This design can automatically adjust the angle during the hoisting process to adapt to the different postures and position changes of the hoisted grid structure, reduce the additional stress and wear caused by angle restrictions, and the hoisting limit rod fixed on the rotating ring can flexibly rotate with the rotating ring to better fit the shape of the hoisted object, provide a more stable and uniform limiting effect, and effectively prevent the hoisted object from shaking and rotating during the hoisting process.
[0017] Furthermore, the angle between the lifting limit rods is a 60° structural setting, and the lifting limit rods are tilted upward. The 60° angle setting can provide more balanced support and limiting effects, so that the hoisted grid structure can be effectively constrained in multiple directions, reducing the shaking and swinging amplitude of the structure during the lifting process, and improving the lifting stability. The tilted upward setting can better resist the upward pulling force, enhance the anti-detachment effect of the grid structure, and reduce the risk of the structure accidentally detaching from the lifting device.
[0018] Furthermore, a sealing cover is provided at the upper end of the column. A plurality of reinforcing bars are provided at the lower end of the sealing cover. The reinforcing bars are vertically inserted into the column and cross with the transverse plate and the connecting rod provided in the column, strengthening the torsional resistance of the column. When subjected to torque, the cross - arranged reinforcing bars, transverse plate and connecting rod can jointly resist the torsional force and maintain the shape and structural integrity of the column. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the present utility model;
[0020] Figure 2 is Figure 1 a partial enlarged view of I in
[0021] Figure 3 is Figure 1 a partial enlarged view of II in
[0022] Figure 4 is a schematic structural diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Reference numerals in the accompanying drawings of the specification include: column 1, moving platform 2, limiting plate 3, load - bearing rod 4, lifting frame 5, support column 6, hydraulic lifter 7, steel cable 8, hoisting mechanism 9, lifting bracket 10, transverse plate 11, inclined hole 12, vertical hole 13, first connecting rod 14, second connecting rod 15, hoisting body 16, rotating ring 17, hoisting limiting rod 18, sealing cover 19, reinforcing bar 20, first bracket 21, second bracket 22, lifting device 23.
[0024] Embodiment 1 is basically as shown in the Figures 1-4 accompanying drawings: A hoisting device for lifting a large - span grid structure includes a column 1. The column 1 is a steel - structure column 1. A moving platform 2 is provided at the lower end of the column 1. Limiting plates 3 are provided around the moving platform 2. A plurality of load - bearing rods 4 are provided on the limiting plates 3. A transverse plate 11 is provided at the upper end of the column 1. Lifting brackets 10 are provided at both ends of the transverse plate 11. One ends of the lifting brackets 10 at both ends close to the column 1 are arranged in an arc structure and are in contact with the column 1.
[0025] There are a vertical hole 13 and an inclined hole 12 provided on the cross plate 11. The vertical hole 13 and the inclined hole 12 are arranged crosswise. At both ends of the cross plate 11, a first bracket 21 and a second bracket 22 are respectively provided. A first connecting rod 14 is provided on the first bracket 21, and the first connecting rod 14 is connected in cooperation with the vertical hole 13. A second connecting rod 15 is provided on the second bracket 22, and the second connecting rod 15 is connected in cooperation with the inclined hole 12. By inserting the first connecting rod 14 and the second connecting rod 15 crosswise on the cross plate 11, the first bracket 21 is arranged perpendicular to the cross plate 11, the second bracket 22 is arranged obliquely with respect to the cross plate 11, and the second bracket 22 is arranged obliquely at one end close to the cross plate 11, so that the second bracket 22 fits better with the cross plate 11. At the upper end position of the column 1, a sealing cover 19 is provided. At the lower end of the sealing cover 19, a plurality of reinforcing rods 20 are provided. The reinforcing rods 20 are vertically inserted into the column 1 and crosswise arranged with the cross plate 11 and the connecting rods provided in the column 1.
[0026] A lifting frame 5 is fixedly provided on the lifting bracket 10, the first bracket 21 and the second bracket 22. At the upper end of the lifting frame 5, a support column 6 is fixedly provided. The support column 6 is arranged parallel to the lifting bracket 10 and the cross plate 11. The length of the support column 6 is greater than the sum of the lengths of the cross plate 11 and the lifting bracket 10, so that the longer support column 6 can better disperse the weight from the grid, reduce the pressure per unit area, and reduce the excessive dependence on the cross plate 11 and the lifting bracket 10, thereby prolonging their service life.
[0027] At the upper end of the support column 6, two lifting devices 23 are provided. The lifting device 23 includes a hydraulic lifter 7, a steel cable 8, and a hoisting mechanism 9. The hydraulic lifter 7 is provided at both ends of the support column 6. At the lower end of the hydraulic lifter 7, a hoisting mechanism 9 is provided. The hoisting mechanism 9 is connected to the hydraulic lifter 7 through the steel cable 8 to perform the lifting work. The hoisting mechanism 9 includes a hoisting body 16, a rotating ring 17, and a hoisting limit rod 18. The hoisting body 16 is fixedly connected to the steel cable 8. A rotating ring 17 is provided on the hoisting body 16 and connected in cooperation with the hoisting body 16. On the rotating ring 17, two hoisting limit rods 18 are provided. The hoisting limit rods 18 are welded to the rotating ring 17. The hoisting limit rods 18 are arranged obliquely upward, and the included angle between the hoisting limit rods 18 is set to 60 degrees. This enables more balanced support and limiting effects when performing limit lifting on a long-span grid, effectively constraining the lifted grid structure in multiple directions, reducing the swaying and swinging amplitude of the structure during the lifting process, and improving the stability of the lifting.
[0028] The above has described the embodiments of the present utility model in detail with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.
Claims
1. A hoisting device for lifting a large-span grid structure, characterized in that: It includes a column, a cross plate is arranged at the top position of the column; a movable platform is arranged at the lower end of the column, and the movable platform is fixedly connected to the column; a vertical hole and an inclined hole are arranged on the cross plate, and the vertical hole and the inclined hole are arranged crosswise; a plurality of lifting corbels are arranged on the cross plate, and a first corbel and a second corbel are arranged on the cross plate; the first corbel is arranged perpendicular to the cross plate, and the second corbel is arranged obliquely to the cross plate; a lifting frame is fixedly arranged at the upper ends of the lifting corbel, the first corbel and the second corbel, and a supporting column is arranged at the upper end of the lifting frame, and a plurality of lifting devices are arranged on the supporting column and fixedly connected to the supporting column; the lifting corbel of the support column and the cross plate are arranged in parallel, and the length of the support column is greater than the sum of the lengths of the cross plate and the lifting corbel; a hydraulic lifter is arranged on the support column, and a hoisting mechanism is arranged at the lower end of the hydraulic lifter.
2. A hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: The first corbel and the second corbel are respectively fixedly connected with the inclined hole and the vertical hole on the transverse plate through the first connecting rod and the second connecting rod.
3. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: The first connecting rods and the second connecting rods corresponding to the first corbels and the second corbels are cross-arranged on the transverse plate.
4. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: The two ends of the lifting bracket are arranged in an arc-shaped structure close to one end of the column.
5. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: The lifting frame is provided with a plurality of reinforcing steel frames which are fixedly connected to the lifting steel frame.
6. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: The lifting device comprises a hydraulic lifter, a steel cable and a hoisting mechanism, and the hoisting mechanism is connected to the hydraulic lifter through the steel cable.
7. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: There are two lifting devices, which are respectively arranged at two ends of the supporting column.
8. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: The hoisting mechanism comprises a hoisting body, a hoisting limit rod and a rotating ring. The hoisting body is fixedly connected to the steel cable. The hoisting body is provided with a rotating ring which is rotatably connected to the hoisting body. The hoisting limit rod is fixedly provided on the rotating ring.
9. A hoisting device for lifting a large-span grid structure according to claim 8, characterized in that: The angle between the lifting limit rods is 30°, the lifting limit rods are arranged to be inclined upward, and the lifting limit rods are rotatably connected with the lifting body through a rotating ring.
10. The hoisting device for lifting a large-span grid structure according to claim 1, characterized in that: A sealing cover is arranged at the upper end of the column, and a plurality of reinforcing rods are arranged at the lower end of the sealing cover. The reinforcing rods are vertically inserted into the column and cross-arranged with the horizontal plate and the connecting rod arranged in the column.