Large-span space truss lifting station and assembling and disassembling method thereof

Abstract

This invention discloses a large-span spatial truss lifting station and its assembly / disassembly method, comprising: several support piers, arranged symmetrically in pairs on both sides of the large-span spatial truss, each support pier having a detachable support lattice column at its top; two crossbeam assemblies, arranged end-to-end and detachably connected to the top of the support lattice column, the crossbeam assemblies being perpendicular to the extension direction of the large-span spatial truss, and each crossbeam assembly having an extension assembly for connecting to the other crossbeam assembly internally; a translation assembly, slidably fitted onto any one of the crossbeam assemblies, the top of the translation assembly being rotatably connected to one end of a middle beam assembly; a limiting assembly, slidably fitted onto the other crossbeam assembly, the other end of the middle beam assembly being adapted to the limiting assembly; and a lifting assembly, slidably connected to the middle beam assembly. This invention can significantly improve construction efficiency, reduce construction costs, and effectively shorten the construction period.

Description

Technical Field

[0001] This invention belongs to the technical field of steel structure construction equipment, specifically relating to a large-span spatial truss lifting station and its assembly and disassembly method. Background Technology

[0002] In the construction of large-span space trusses, these structures are widely used due to their high structural strength and excellent overall performance. However, their large size and weight, coupled with the inherent structural integrity of existing structures, make transportation inconvenient. In actual construction, large lifting equipment is often required for hoisting operations, which are technically challenging, pose significant safety risks, and demand extremely high precision and control. This stage often becomes a key factor restricting the construction period, leading to extended overall construction timelines, increased construction costs, and greater coordination difficulties. Summary of the Invention

[0003] The purpose of this invention is to provide a large-span spatial truss lifting station and its assembly and disassembly method, which can significantly improve construction efficiency, reduce construction costs, and effectively shorten the construction period.

[0004] To achieve the above objectives, the present invention provides a large-span spatial truss lifting station, comprising: Several support piers are provided, arranged in pairs and symmetrically embedded on the ground on both sides of the large-span spatial truss. Each support pier is detachably connected to a support lattice column at its top. There are two beam assemblies, which are opposite each other and can be detachably connected to the top of the supporting lattice column. The beam assemblies are perpendicular to the extension direction of the large-span space truss. The beam assemblies are connected to an extension assembly for connecting the other beam assembly. The translation component is slidably fitted onto any of the crossbeam components, and the top of the translation component is rotatably connected to one end of the middle beam component. The limiting component is slidably sleeved on another crossbeam component, and the other end of the intermediate beam component is adapted to the limiting component; The lifting component is slidably connected to the intermediate beam component.

[0005] As a further aspect of the present invention: the beam assembly includes a beam that is detachably connected to the top of two supporting lattice columns, and the two supporting lattice columns are respectively located on both sides of a large-span spatial truss. The side wall of the beam is provided with a receiving groove and a clearance groove, the receiving groove and the clearance groove are not connected, and the extension component is connected and disposed in the receiving groove.

[0006] As a further aspect of the present invention: a first power box is fixedly connected to the top of the crossbeam, and the extension component includes a connecting beam. One end of the connecting beam is rotatably connected to the inside of the receiving groove away from the clearance groove, and is drively connected to the power output end of the first power box. When the connecting beam is in the storage state, it is located inside the receiving groove.

[0007] As a further aspect of the present invention: the translation component includes a support sleeve, which is slidably fitted on the outside of the crossbeam. A second power box for driving the support sleeve to slide on the crossbeam is fixedly connected to the outer wall of the crossbeam. The middle beam assembly is rotatably mounted on the top of the support sleeve.

[0008] As a further aspect of the present invention: an elongated hole is provided on the side wall of the support sleeve to realize the relative movement between the second power box and the support sleeve 7.

[0009] As a further aspect of the present invention: the limiting component includes a limiting sleeve, which is slidably sleeved on the outside of another crossbeam. The top of the limiting sleeve is rotatably connected to a limiting frame, which can slide horizontally along the direction of the moving beam. The limiting frame is adapted to the free end of the intermediate beam component.

[0010] As a further embodiment of the present invention: the intermediate beam assembly includes a third power box and a movable beam. The third power box is fixedly installed on the top of the support sleeve. One end of the movable beam is adapted to the limiting frame, and the other end is rotatably connected to the top of the support sleeve and is transmitted to the power output end of the third power box. Limiting grooves are respectively opened on the two opposite side walls of the movable beam, and a long through hole is vertically opened in the middle of the movable beam.

[0011] As a further aspect of the present invention: the lifting assembly includes a slide, which is slidably fitted onto the outside of the moving beam through a limiting groove, and a crane is fixedly connected to the top of the slide, with a lifting device detachably connected to the bottom of the crane's wire rope.

[0012] As a further aspect of the present invention: the wire rope is movably disposed within the long through hole.

[0013] To achieve the above objectives, the present invention also provides a method for dismantling a large-span spatial truss lifting station, comprising the following steps: Excavate foundation pits on the ground on both sides of the large-span spatial truss, bury the support piers in the foundation pits, and then install the support lattice columns on the top of the support piers. On the ground, a translation component with a middle beam assembly is fitted onto a crossbeam assembly, with the translation component positioned to avoid the free end of the extension component; On the ground, the limiting component is fitted onto another crossbeam component, with the limiting component positioned away from the free end of the extension component, and the limiting component is in a non-cooperative state. Two crossbeam assemblies are lifted and installed on top of the supporting lattice column using a truck crane. The crossbeam assemblies are perpendicular to the extension direction of the large-span space truss, with the front end of one crossbeam assembly facing the rear end of the other crossbeam assembly. Unfold the extension component within the beam assembly and insert it into another beam assembly; The intermediate beam assembly is rotated to form an angle with the crossbeam assembly through the third power box. Then, the lifting assembly is fitted onto the outside of the intermediate beam assembly using a truck crane. The intermediate beam assembly is then rotated to make it perpendicular to the crossbeam assembly. Finally, the free end of the intermediate beam assembly is limited and fixed by the rotation and translation limit assembly. Large-span space trusses are installed using lifting components.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: Each component adopts a detachable design, which facilitates transportation and rapid on-site assembly and disassembly, significantly improving construction efficiency, reducing the cost of repeated assembly, and adapting to the needs of segmented construction of large-span spatial trusses; The extension components installed inside the crossbeam assembly can be rotated out and inserted into another crossbeam, effectively expanding the lateral working range of the crossbeam and improving the equipment's adaptability to different bridge widths and hoisting positions, without the need to replace the entire main beam structure. The translation component and the intermediate beam component work together to enable the lifting component to move flexibly in the lateral and longitudinal directions along the large-span spatial truss. Combined with the overhead crane lifting mechanism, it can accurately hoist and position the large-span spatial truss, reduce manual adjustments, and improve installation accuracy and safety. The process of pre-assembling on the ground followed by overall hoisting avoids complex high-altitude operations and reduces safety risks. The phased operation of the extension and limiting components ensures structural stability and simplifies on-site procedures. This invention combines structural flexibility, ease of operation, and construction safety, significantly improving the installation efficiency and quality of large-span spatial trusses. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall invention.

[0016] Figure 2 This is a partially enlarged schematic diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the crossbeam and extension components of the present invention.

[0018] Figure 4 This is a schematic diagram of the supporting sliding sleeve and the second power box of the present invention.

[0019] Figure 5 This is a schematic diagram of the moving beam and the third power box of the present invention.

[0020] Figure 6 This is a schematic diagram of the limiting component of the present invention.

[0021] In the diagram: 1. Ground, 2. Supporting pier, 3. Supporting lattice column, 4. Crossbeam, 5. Connecting beam, 6. First power box, 7. Supporting sliding sleeve, 8. Second power box, 9. Third power box, 10. Limiting sliding sleeve, 11. Limiting frame, 12. Receiving groove, 13. Displacement groove, 14. Moving beam, 15. Long through hole, 16. Limiting groove, 17. Overhead crane, 18. Slide, 19. Wire rope, 20. Lifting device. Detailed Implementation

[0022] The invention will now be further described with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a large-span spatial truss lifting station includes: Supporting piers 2 are provided in several pairs and symmetrically buried on the ground 1 on both sides of the large-span spatial truss. Each supporting pier 2 is detachably connected to a supporting lattice column 3 at its top. There are two beam assemblies, which are opposite each other and can be detachably connected to the top of the supporting lattice column 3. The beam assemblies are perpendicular to the extension direction of the large-span space truss. The beam assemblies are connected to an extension assembly for connecting the other beam assembly. The translation component is slidably fitted onto any of the crossbeam components, and the top of the translation component is rotatably connected to one end of the middle beam component. The limiting component is slidably sleeved on another crossbeam component, and the other end of the intermediate beam component is adapted to the limiting component; The lifting component is slidably connected to the intermediate beam component.

[0024] Furthermore, Figure 2 and Figure 3 As shown, the beam assembly includes a beam 4, which is detachably connected to the top of two supporting lattice columns 3. The two supporting lattice columns 3 are located on both sides of the large-span spatial truss. The side wall of the beam 4 is provided with a receiving groove 12 and a relief groove 13. The receiving groove 12 and the relief groove 13 are not connected. The extension component is connected and set in the receiving groove 12.

[0025] Furthermore, a first power box 6 is fixedly connected to the top of the crossbeam 4. The extension assembly includes a connecting beam 5. One end of the connecting beam 5 is rotatably connected to the inside of the receiving groove 12 away from the relief groove 13, and is connected to the power output end of the first power box 6. When the connecting beam 5 is in the storage state, it is located inside the receiving groove 12.

[0026] Furthermore, such as Figure 1 and Figure 4 As shown, the translation component includes a support sleeve 7, which is slidably sleeved on the outside of the crossbeam 4. A second power box 8 for driving the support sleeve 7 to slide on the crossbeam 4 is fixedly connected to the outer wall of the crossbeam 4. The middle beam assembly is rotatably disposed at the top of the support sleeve 7.

[0027] Furthermore, an elongated hole is provided on the side wall of the support sleeve 7 to enable relative movement between the second power box 8 and the support sleeve 7.

[0028] Furthermore, such as Figure 1 and 2 As shown, the limiting assembly includes a limiting sleeve 10, which is slidably sleeved on the outside of another crossbeam 4. A limiting frame 11 is rotatably connected to the top of the limiting sleeve 10. The limiting frame 11 can slide horizontally along the direction of the moving beam 14, and is adapted to the free end of the intermediate beam assembly. Preferably, as... Figure 6 As shown, the limiting sleeve 10 is provided with bolts that connect to and limit the limiting frame 11. The bottom of the limiting frame 11 is provided with a strip groove that can rotate and slide horizontally under the limiting action of the bolts.

[0029] Furthermore, such as Figure 1 , Figure 2 As shown, the intermediate beam assembly includes a third power box 9 and a movable beam 14. The third power box 9 is fixedly mounted on the top of the support sleeve 7. One end of the movable beam 14 is adapted to the limiting frame 11, and the other end is rotatably connected to the top of the support sleeve 7 and is drive-connected to the power output end of the third power box 9. Limiting grooves 16 are respectively opened on the two opposite side walls of the movable beam 14, and a long through hole 15 is vertically opened in the middle of the movable beam 14. Preferably, as Figure 5 As shown, the third power box 9 drives the movable beam 14 to move and adjust via gear transmission.

[0030] Furthermore, the lifting assembly includes a carriage 18, which is slidably fitted onto the outside of the moving beam 14 via a limiting groove 16. A crane 17 is fixedly connected to the top of the carriage 18, and a lifting device 20 is detachably connected to the bottom of the wire rope 19 of the crane 17.

[0031] Furthermore, the wire rope 19 is movably disposed within the through hole 15.

[0032] A method for dismantling a large-span spatial truss lifting station includes the following steps: Excavate foundation pits on the ground 1 on both sides of the large-span spatial truss, bury support piers 2 in the foundation pits, and then install support lattice columns 3 on the top of support piers 2. On ground 1, a translation component with a middle beam assembly is fitted onto a crossbeam assembly, with the translation component positioned to avoid the free end of the extension component; On ground 1, the limiting component is fitted onto another crossbeam component, with the limiting component positioned away from the free end of the extension component, and the limiting component in a non-fitting state. Two crossbeam assemblies are lifted and installed on the top of the supporting lattice column 3 using a truck crane. The crossbeam assemblies are perpendicular to the extension direction of the large-span space truss, and the front end of one crossbeam assembly is opposite the rear end of the other crossbeam assembly. Unfold the extension component within the beam assembly and insert it into another beam assembly; The intermediate beam assembly is rotated to form an angle with the crossbeam assembly by the third power box 9. Then, the lifting assembly is fitted onto the outside of the intermediate beam assembly by the truck crane. The intermediate beam assembly is then rotated to make it perpendicular to the crossbeam assembly. Finally, the free end of the intermediate beam assembly is limited and fixed by the rotation and translation limit assembly. Large-span space trusses are installed using lifting components.

[0033] The detailed working process of this invention is as follows: First, foundation pits are symmetrically excavated on the ground on both sides of the large-span spatial truss. The location of the foundation pits is determined according to the design of the large-span spatial truss and the layout of the lifting station. Support piers 2 are embedded in the foundation pits and fixed by concrete pouring to ensure their load-bearing capacity and stability. The top of the support piers is connected to the support lattice column 3 by bolts or other detachable methods. The support lattice column serves as the vertical support structure of the entire lifting station, and its height needs to be adjusted according to the lifting height of the large-span spatial truss and the ground conditions.

[0034] Pre-assemble the crossbeam assemblies on the ground: store the extension components in receiving slots to avoid interference during transportation and hoisting. Then use a truck crane to hoist the crossbeam assemblies to the top of the supporting lattice columns and secure them with bolts. After installation, the two crossbeam assemblies must be perpendicular to each other in the extension direction of the large-span space truss and end to end, that is, the beginning of one crossbeam must be aligned with the end of the other crossbeam, in preparation for subsequent extension connections.

[0035] The first power box 6 is activated, driving the connecting beam 5 to rotate and unfold from the receiving slot 12 until it is inserted into the clearance slot 13 or corresponding interface of another crossbeam assembly, forming a continuous crossbeam structure. This process enhances the integrity and load-bearing capacity of the crossbeam system, ensuring the stability of bridge operations.

[0036] On the ground, the translation component is fitted onto a crossbeam, avoiding the free end of the extension component. Similarly, the limiting component is fitted onto another crossbeam and placed in a non-fitting state, i.e., the limiting frame is not installed or open. Then, a truck crane is used to rotatably connect the intermediate beam assembly to the translation component: the intermediate beam assembly includes a third power box 9 and a moving beam 14, one end of which is rotatably connected to the top of the support sleeve and drively connected to the output end of the third power box.

[0037] The third power box 9 drives the moving beam 14 to rotate, so that it forms a certain angle with the crossbeam assembly, such as 45°, so as to hoist and lift the assembly.

[0038] A truck crane is used to attach the carriage to the outside of the moving beam. The bottom of the carriage's side wall slides into the limiting groove 16 of the moving beam, ensuring that it can only move along the length of the moving beam. The overhead crane is fixed to the top of the carriage, and the wire rope passes through the long through hole 15 of the moving beam and is connected to the lifting device 20.

[0039] Start the third power box and rotate the moving beam until it is perpendicular to the crossbeam assembly, i.e., parallel to the direction of the large-span spatial truss. At this time, the free end of the moving beam is inserted into the space formed by the limiting sleeve 10 and the limiting frame 11. Install and fix the limiting frame 11 to restrict the vertical and horizontal displacement of the moving beam and form a stable support.

[0040] The second power box 8 drives the translation component to move along the crossbeam, causing the intermediate beam component and the lifting component to move laterally as a whole, adjusting them to be directly above the beam segment to be lifted. The overhead crane 17 drives the carriage 18 to move longitudinally along the moving beam 14, fine-tuning the position of the lifting device.

[0041] The overhead crane lowers wire rope 19 and lifting device 20 to connect the large-span spatial truss segment. During lifting, the overhead crane winch operates, raising the beam segment to the required height via the wire rope. Then, in coordinated operation: the second power box drives the translation component to move laterally, the third power box can fine-tune the angle of the moving beam, and the overhead crane drives the carriage to move longitudinally, achieving precise three-dimensional positioning of the beam segment.

[0042] The beam segments are slowly lowered onto the piers or temporary supports to complete the installation. The above process is repeated to install the large-span spatial truss segment by segment.

[0043] All power units can use hydraulic or electric systems, with centralized control ensuring synchronization.

[0044] After all beam segments are installed, move the lifting assembly to the middle position of the crossbeam, unload the lifting equipment, and retract the wire rope. Inspect the site and remove any obstacles. Use a truck crane to secure the carriage 18, loosen the connection between the overhead crane and the carriage, and lift the entire lifting assembly away from the moving beam 14. Remove the limiting bracket 11, allowing the free end of the moving beam to disengage from the limiting sleeve 10. Start the third power box 9 and rotate the moving beam to an angle of approximately 45° with the crossbeam assembly to facilitate truck crane access. The truck crane holds the moving beam, removes the connecting bolts between it and the supporting sleeve 7, and lowers it to the ground. The second power box 8 drives the supporting sleeve 7 to move to the end of the crossbeam, and the truck crane lifts it away from the translation assembly. Move the limiting sleeve 10 to the end of the crossbeam and lift it away from the limiting assembly. Start the first power box 6 and drive the connecting beam 5 to rotate and retract into the receiving groove 12. The truck crane holds the crossbeam 4, removes the connecting bolts between it and the supporting lattice column 3, and lowers it to the ground segment by segment. The connection between the supporting lattice column 3 and the supporting pier 2 was dismantled, and the supporting lattice column was lifted away using crane equipment. Finally, the supporting pier 2 was excavated by an excavator, the foundation pit was backfilled, and the ground was restored to its original state. After all components were dismantled, cleaned, maintained, and transported separately to the next construction site or warehouse for storage.

[0045] This invention achieves efficient and safe hoisting of large-span spatial trusses through modular design and multi-component collaboration. The working process emphasizes precision and stability, while the disassembly process prioritizes reverse sequence and safety, making it suitable for various large-span spatial truss construction scenarios. The entire system is reusable, reducing construction costs.

Claims

1. A large-span spatial truss lifting station, characterized in that, include: Support piers (2) are provided in several pairs and symmetrically buried on the ground (1) on both sides of the large-span space truss. Each support pier (2) is detachably connected to a support grid column (3) at its top. Two beam assemblies are provided, with the two beam assemblies facing each other end to end and detachably connected to the top of the supporting lattice column (3). The beam assemblies are perpendicular to the extension direction of the large-span space truss. An extension assembly for connecting another beam assembly is connected inside the beam assembly. The translation component is slidably fitted onto any of the crossbeam components, and the top of the translation component is rotatably connected to one end of the middle beam component. The limiting component is slidably sleeved on another crossbeam component, and the other end of the intermediate beam component is adapted to the limiting component; The lifting component is slidably connected to the intermediate beam component.

2. The large-span spatial truss lifting station according to claim 1, characterized in that, The beam assembly includes a beam (4), which is detachably connected to the top of two supporting lattice columns (3), and the two supporting lattice columns (3) are located on both sides of the large-span space truss. The side wall of the beam (4) is provided with a receiving groove (12) and a relief groove (13). The receiving groove (12) and the relief groove (13) are not connected. The extension component is connected and set in the receiving groove (12).

3. A large-span spatial truss lifting station according to claim 2, characterized in that, The top of the crossbeam (4) is fixedly connected to the first power box (6). The extension component includes a connecting beam (5). One end of the connecting beam (5) is rotatably connected to the inside of the receiving groove (12) away from the relief groove (13) and is connected to the power output end of the first power box (6). When the connecting beam (5) is in the storage state, it is located in the receiving groove (12).

4. A large-span spatial truss lifting station according to claim 2, characterized in that, The translation component includes a support sleeve (7), which is slidably mounted on the outside of the crossbeam (4). A second power box (8) for driving the support sleeve (7) to slide on the crossbeam (4) is fixedly connected to the outer wall of the crossbeam (4). The intermediate beam assembly is rotatably mounted on the top of the support sleeve (7).

5. A large-span spatial truss lifting station according to claim 4, characterized in that, The side wall of the support sleeve (7) has an elongated hole to realize the relative movement between the second power box (8) and the support sleeve (8).

6. A large-span spatial truss lifting station according to claim 4, characterized in that, The limiting component includes a limiting sleeve (10), which is slidably sleeved on the outside of another crossbeam (4). The top of the limiting sleeve (10) is rotatably connected to a limiting frame (11), which can slide horizontally along the direction of the moving beam (14). The limiting frame (11) is adapted to the free end of the intermediate beam component.

7. A large-span spatial truss lifting station according to claim 6, characterized in that, The intermediate beam assembly includes a third power box (9) and a moving beam (14). The third power box (9) is fixedly installed on the top of the support sleeve (7). One end of the moving beam (14) is adapted to the limit frame (11), and the other end is rotatably connected to the top of the support sleeve (7) and is connected to the power output end of the third power box (9). Limit grooves (16) are respectively opened on the two opposite side walls of the moving beam (14), and a long through hole (15) is vertically opened in the middle of the moving beam (14).

8. A large-span spatial truss lifting station according to claim 7, characterized in that, The lifting assembly includes a carriage (18), which is slidably mounted on the outside of the moving beam (14) through a limiting groove (16). A crane (17) is fixedly connected to the top of the carriage (18), and a lifting device (20) is detachably connected to the bottom of the wire rope (19) of the crane (17).

9. A large-span spatial truss lifting station according to claim 8, characterized in that, The wire rope (19) is movably set inside the long through hole (15).

10. A method for dismantling a large-span spatial truss lifting station based on any one of claims 7-9, characterized in that, Includes the following steps: Excavate foundation pits on the ground (1) on both sides of the large-span space truss and bury support piers (2) in the foundation pits. Then install support lattice columns (3) on the top of support piers (2). On the ground (1), a translation component with a middle beam assembly is fitted onto a crossbeam assembly, with the translation component positioned away from the free end of the extension component; On the ground (1), the limiting component is fitted onto another crossbeam component, the position of the limiting component avoids the free end of the extension component, and the limiting component is in a non-cooperative state; Two beam assemblies are lifted and installed on the top of the supporting lattice column (3) using a truck crane. The beam assemblies are perpendicular to the extension direction of the large-span space truss, and the front end of one beam assembly is opposite the rear end of the other beam assembly. Unfold the extension component within the beam assembly and insert it into another beam assembly; The intermediate beam assembly is rotated to form an angle with the crossbeam assembly by the third power box (9), and then the lifting assembly is attached to the outside of the intermediate beam assembly by the truck crane. Then the intermediate beam assembly is rotated to make it perpendicular to the crossbeam assembly. Then the free end of the intermediate beam assembly is limited and fixed by the rotation and translation limit assembly. Large-span space trusses are installed using lifting components.

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