Large-tonnage truss integral lifting precision control instrument

Abstract

The utility model discloses a large-tonnage truss integral lifting precision control instrument which comprises a structural steel column (4), the top of the structural steel column (4) is connected with a lifting reaction frame (6), the lifting reaction frame (6) is provided with a lifter (1), the lifter (1) is provided with a steel strand (2), the steel strand (2) serves as a bearing cable, and the lifter (1) is connected with a structural steel beam (3). Lifting ground anchors (7) are arranged between the tail ends of the steel strands (2) and the structural steel beams (3), the structural steel beams (3) drive the trusses (8) to be lifted upwards, the structural steel columns (4) are fixed to the towers through the structural steel beams (5), and the towers comprise the tower A (9) and the tower B (10). The large-tonnage truss lifting device can integrally lift the large-tonnage trusses to the designed elevation safely and accurately, and is efficient, convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel truss lifting construction technical field relates to a big ton truss whole lifting precision control instrument. BACKGROUND

[0002] The components of the truss can be disassembled and reused, and the repeatability of the structure saves resources; compared with traditional concrete buildings, the truss is built in a shorter time, because the builders can manufacture and prefabricate the components in a factory, and then splice them on the construction site, which greatly improves the construction efficiency; compared with other structural forms, the proportion of space in the truss structure is small, so that the available building space can be increased, which is one of the reasons why the truss building is widely used in airports, shopping malls, exhibition centers and other places.

[0003] At present, there is a high safety risk in the lifting process of large ton truss, which usually requires a long preparation time and complex construction steps, resulting in low construction efficiency. UTILITY MODEL CONTENT

[0004] In view of the above problems existing in the prior art, the present application provides a large ton truss whole lifting precision control instrument.

[0005] The technical scheme of the utility model is as follows:

[0006] A large ton truss whole lifting precision control instrument, comprising a structural steel column, a lifting counterforce frame connected to the top of the structural steel column, a lifter installed on the lifting counterforce frame, a steel strand assembled with the lifter, the steel strand serving as a load-bearing cable, the lifter being connected with a structural steel beam, a lifting ground anchor being provided between the end of the steel strand and the structural steel beam, the structural steel beam driving the truss to be lifted upward, the structural steel column being fixed to a tower through the structural steel beam, and the tower comprising an A tower and a B tower.

[0007] As a preferred embodiment of the utility model: the lifter adopts a hydraulic structure and takes the pump source as a power system.

[0008] As a preferred embodiment of the utility model: the lifter serves as a working terminal, is monitored in real time through a computer control system, and realizes synchronous control, posture correction, load balancing and precision control.

[0009] As a preferred embodiment of the utility model: the steel strand is flexible.

[0010] As a preferred embodiment of the utility model: a high-level corridor and a low-level corridor are provided between the A tower and the B tower, the planar projections of the high-level corridor and the low-level corridor are cross X-shaped, and the projection of a single tower outside the range is an irregular parallelogram.

[0011] As a preferred embodiment of the utility model: high corridor and low corridor are all lifted by four lifting points, four lifting points are all equipped with hoister and steel strand, each hoister is equipped with 24 steel strands, and the diameter of the steel strand is 17.8mm.

[0012] The utility model has the advantages of:

[0013] The utility model discloses a large-tonnage truss integral lifting precision control instrument, set up the steel strand as the bearing cable, connect the hoister with the structural steel beam, set up the lifting ground anchor between the end of the steel strand and the structural steel beam, drive the truss upwards by the structural steel beam, take the hoister as the work terminal, monitor in real time through the computer control system, realize synchronous control, attitude correction, load balance and precision control, can safely and accurately lift the large-tonnage truss to the design elevation, the lifting height reaches 90m, and the lifting weight reaches 3100t, which is convenient and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model large-tonnage truss integral lifting precision control instrument;

[0015] Figure 2 It is the assembly schematic view of the steel strand and the structural steel beam;

[0016] Figure 3 It is the schematic view of the truss when being lifted;

[0017] Figure 4 It is the schematic view of the truss when being lifted formally;

[0018] Figure 5 It is the schematic view of the truss before being in position;

[0019] Figure 6 It is the enlarged view of A;

[0020] Figure 7 It is the lifting in position view of the truss;

[0021] Figure 8 It is the enlarged view of B;

[0022] Figure 9 It is the enlarged view of C;

[0023] Figure 10 It is the schematic view after the lifting facility is dismantled.

[0024] In the drawing: 1-hoister;2-steel strand;3-structural steel beam;4-structural steel column;5-structural steel beam;6-lifting counterforce frame;7-lifting ground anchor;8-truss;9-A tower;10-B tower. DETAILED DESCRIPTION

[0025] The utility model is specifically described below in combination with the drawings and examples. Obviously, the described examples are only some of the utility model's examples, not all of them. Based on the examples in the utility model, all other examples obtained by those skilled in the art without creative labor belong to the scope of the utility model's protection.

[0026] As Figures 1-10 shown, a large tonnage truss overall lifting precision control instrument, including structural steel column 4, the top of structural steel column 4 is connected with lifting counterforce frame 6, lifting counterforce frame 6 is installed with lifter 1, lifter 1 is equipped with steel strand 2, steel strand 2 is as a load-bearing cable, and lifter 1 is connected with structural steel beam 3, lifting ground anchor 7 is arranged between the end of steel strand 2 and structural steel beam 3, structural steel beam 3 drives truss 8 to lift upwards, structural steel column 4 is fixed to tower through structural steel beam 5, and the tower includes A tower 9 and B tower 10.

[0027] Lifter 1 adopts hydraulic structure and takes pump source as power system, the hydraulic structure adopts oil to transmit power, reduces the friction between mechanical parts, runs stably and is low in noise; lifter 1 is as a working terminal, is monitored in real time through computer control system, realizes synchronous control, attitude correction, load balancing and precision control; steel strand 2 is flexible, has high strength and good flexibility, and can adapt to complex engineering requirements; high-level corridor and low-level corridor are arranged between A tower 9 and B tower 10, the lifting hydraulic pump sources of the high-level corridor and the low-level corridor are placed on the RF top floor slab and the 18th floor slab respectively, the plane projection of the high-level corridor and the low-level corridor is cross X type, and the projection of a single tower is an irregular parallelogram; the high-level corridor and the low-level corridor are lifted by four lifting points, are suitable for large-span buildings, can effectively disperse load, provide a larger span range, meet the needs of large buildings, and each of the four lifting points is equipped with lifter 1 and steel strand 2; each lifter 1 is equipped with 24 steel strands 2, and the diameter of the steel strand 2 is 17.8 mm.

[0028] As Figure 3 shown, the schematic diagram of truss when being lifted for trial, the lifting equipment at each lifting lifting point is loaded in stages based on the main body structure theoretical load, and the loading is in turn 20%, 40%, 60%, 80%, under the condition that each part is confirmed to be normal, can continue to be loaded to 90%, 100%, until the lifted unit is completely separated from the ground assembly jig; after the loading in stages is completed, the structure lifting is paused after leaving the assembly jig about 250 mm, stays for more than 12 hours to make comprehensive inspection, and during the staying period, professional personnel are organized to carry out special inspection on the lifting facilities, corridor, lifting hoist, connecting parts and each lifting equipment.

[0029] As Figure 4The diagram shows the truss during the formal lifting process. Every 3-5 meters during lifting, the synchronicity of each lifting point is measured. When the asynchrony reaches the warning value of 50mm, adjustment of a single lifting point is required. Before fine-tuning begins, the computer synchronous control system is switched from automatic to manual mode. As needed, the hydraulic lifters at each lifting point in the entire hydraulic lifting system are synchronized with micro-motion, or individual hydraulic lifters are fine-tuned. Micro-motion, or jogging adjustment, can achieve millimeter-level accuracy, fully meeting the precision requirements of structural installation. Dedicated personnel are assigned to specific locations to observe and provide early warnings of the outer edge of the structure at each floor it will pass through during the entire lifting process.

[0030] like Figure 5 As shown in the diagram, before the truss is in place, the truss to be lifted is raised to about 1.1m from the design elevation, the lifting is paused, and each port is checked for collisions; if there are no collisions, the truss is slowly raised to the design elevation, the hydraulic lifting device is locked, and the reinforcement and welding operations are awaited; the whole structure is then lifted into place.

[0031] like Figure 7 As shown in the diagram, after the main load-bearing members are inserted and welded, data is collected and processed at various measurement points of the structure.

[0032] like Figure 10 As shown in the diagram, after the lifting facilities are dismantled, the concrete strength of the connecting corridor reaches the design strength. Then, the "hinged-then-rigid" joints are welded and non-destructive tested, and a test report is issued. Then, the hydraulic lifting device is unloaded and dismantled. Subsequently, the lifting equipment, lifting facilities, and temporary corbel supports are dismantled, completing the relevant construction work for the lifting of the connecting corridor.

[0033] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details.

Claims

1. A large tonnage truss overall lifting precision control instrument, characterized in that: The application relates to a lifting device for a tower building, which comprises a structural steel column (4), the top of the structural steel column (4) being connected with a lifting counterforce frame (6), the lifting counterforce frame (6) being installed with a lifter (1), the lifter (1) being equipped with a steel strand (2) as a load-bearing cable, the steel strand (2) connecting the lifter (1) with a structural steel beam (3), a lifting ground anchor (7) being arranged between the end of the steel strand (2) and the structural steel beam (3), the structural steel beam (3) driving a truss (8) to be lifted upwards, the structural steel column (4) being fixed to the tower building through a structural steel beam (5), and the tower building comprising an A tower building (9) and a B tower building (10).

2. The large-tonnage gantry overall lifting precision control instrument according to claim 1, characterized in that: The lifter (1) adopts a hydraulic structure and takes a pump source as a power system.

3. The large-tonnage gantry overall lifting precision control instrument according to claim 2, characterized in that: The lifter (1) is taken as a working terminal, is monitored in real time through a computer control system, and realizes synchronous control, posture correction, load balancing and precision control.

4. The large-tonnage gantry overall lifting precision control instrument according to claim 1, characterized in that: The steel strand (2) is in a flexible shape.

5. The large tonnage truss overall lifting precision control instrument according to claim 1, characterized in that: High-positioned and low-positioned corridors are arranged between the A tower building (9) and the B tower building (10), the planar projections of the high-positioned and low-positioned corridors are cross X-shaped, and the projections of single tower buildings are irregular parallelograms.

6. The large-tonnage gantry overall lifting precision control instrument according to claim 5, characterized in that: The high-positioned and low-positioned corridors are lifted through four lifting points, the four lifting points are equipped with lifters (1) and steel strands (2), each lifter (1) is equipped with 24 steel strands (2), and the diameter of the steel strand (2) is 17.8 mm.

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