A vertically space up-and-down lifting structure

Abstract

The utility model relates to a kind of vertical space up and down lifting structure, it includes: structural steel column, it is spaced apart along longitudinal direction, corresponding two structural steel columns in longitudinal direction have height difference, its top is equipped with base plate;Lifting support, it is installed on the base plate on structural column top;Lifter, it is installed in the overhanging end of lifting support, it is spaced apart two at least along transverse direction;Steel strand, upper section is connected in lifter;Joist, it is transversely arranged, and is installed in the lower section of steel strand;First node support, it is installed in the middle part of base plate;Second node support, it is installed in the middle part of joist.The utility model mainly uses the way of indirect support on the bottom of node to lift steel truss upwards, can increase the contact area with steel truss node, and the node part of steel truss is compression rather than tension, can avoid tensile stress to destroy connecting part, avoid producing tension bending deformation.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a vertical space lifting structure. Background Technology

[0002] For example, Chinese Utility Model Patent Publication No. CN212583278U discloses a lower lifting point device, which includes a lifting bracket, a hydraulic lifter, steel strands, a lifting plate, and two sets of connecting rods. The lifting plate includes a detachably connected insert plate and a lifting device. The insert plate is vertically inserted into the lower chord on the outer side of the truss, and the insert plate is fixedly connected to the lower chord. The lifting device is fixedly connected to the lower end of the steel strand. Because it directly uses the method of inserting the insert plate into the lower chord, the contact area of ​​the lower chord is small, the applied tensile stress is large, and the lower chord is prone to excessive bending deformation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a vertical lifting structure, which mainly adopts the method of indirectly supporting the bottom surface of the node to lift the steel truss upward. This can increase the contact area with the steel truss node. Moreover, the node of the steel truss is under compression rather than tension, which can avoid tensile stress from damaging the connection and avoid tensile bending deformation. The node has a stronger ability to resist compressive deformation, thereby minimizing the impact on the shape of the steel truss during the lifting process.

[0004] To solve the above problems, a vertical lifting structure is adopted, which includes: Structural steel columns are spaced apart along the longitudinal direction, with a height difference between two corresponding structural steel columns in the longitudinal direction, and a base plate is installed on the top of each column. A lifting bracket is installed on the top base plate of the structural column; The lifting device is installed at the cantilever end of the lifting support, and at least two are spaced apart along a transverse column; The upper section of the steel strand is connected to the hoist. The support beam is arranged horizontally and installed on the lower section of the steel strand; The first node support is installed in the middle of the substrate; The second node support is installed in the middle of the beam.

[0005] With this structure, the support beam is placed below the second node support. When the second node support is connected to the steel truss node, it is located below the steel truss node, and the two exert pressure on each other to avoid directly applying pressure to the steel truss node. The second node support is directly welded to the steel truss node, and in the future, only the second node support and the support beam need to be disassembled.

[0006] As a further improvement to this utility model, it also includes: The unloading blocks are installed on the front and rear sides of the first node support and are spaced apart on the base plate along the longitudinal direction. The truss chord support plate is installed on top of the unloading block and has a slot in the middle.

[0007] With this structure, during unloading, the steel truss is first transferred to the unloading block, and then gradually unloaded by the unloading block. The later-added end truss nodes are gradually placed on the first node support, and the welding of the end truss nodes and the first node support is completed. The slot is beneficial for supporting the lower chord of the later-added end truss, thereby improving construction efficiency.

[0008] As a further improvement of this utility model, ribs are installed between the structural steel column and the base plate, and multiple ribs are arranged at intervals along the circumference.

[0009] With this structure, the substrate can be stably supported.

[0010] As a further improvement of this utility model, corner brackets are welded around the unloading block, and the corner brackets are connected to the base plate by bolts.

[0011] With this structure, the unloading block can be detachably fixed to the substrate.

[0012] As a further improvement of this utility model, the supporting beam is made of double-section I-beams, and an anchor is installed in the middle of the double-section I-beams, through which the steel strands are threaded; the anchor is installed on the upper and lower flanges of the double-section I-beams.

[0013] With this structure, the anchors can effectively anchor the steel strands to the support beam, and the support beam is anchored both above and below to improve stability.

[0014] As a further improvement of this utility model, the lifting bracket adopts a frame structure. The four legs of the frame structure are made of I-beams and installed on the base plate. The top longitudinal beam is made of double I-beams and the legs are cantilevered along the longitudinal direction. The lifting device is installed on the cantilevered end. The two legs arranged side by side along the transverse direction are connected by a crossbeam, which is also made of I-beams.

[0015] This structure makes the support frame easier to install, and diagonal bracing can be installed between the cantilever end and the outrigger to improve stability.

[0016] As a further improvement of this utility model, the bottom of the second node support is fixed on the pad, and the four corners of the pad are fastened to the support beam by bolts.

[0017] With this structure, the pad can be easily disassembled.

[0018] This utility model mainly adopts the method of indirectly supporting the bottom surface of the node to lift the steel truss upward, which can increase the contact area with the steel truss node. Moreover, the node part of the steel truss is under compression rather than tension, which can avoid tensile stress from damaging the connection part and avoid tensile bending deformation. The node has a stronger ability to resist compressive deformation, thus minimizing the impact on the shape of the steel truss during the lifting process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the ground assembly stage of the steel truss.

[0020] Figure 2 This is a schematic diagram of the installation stage of the steel truss and steel strand lifting points.

[0021] Figure 3 This is a schematic diagram of the initial lifting phase.

[0022] Figure 4 This is a diagram illustrating the formal upgrade phase.

[0023] Figure 5 This is a schematic diagram of the slow-speed lifting phase.

[0024] Figure 6 This is a schematic diagram of the end truss patching stage.

[0025] Figure 7 A schematic diagram of the support structure for improvement.

[0026] Figure 8 This is a schematic diagram of the anchor installation structure.

[0027] Reference numerals: 1. Structural steel column; 101. Base plate; 102. Rib plate; 2. Lifting support; 201. Outrigger; 202. Longitudinal beam; 203. Crossbeam; 3. Lifter; 4. Steel strand; 5. Support beam; 6. First node support; 7. Second node support; 8. Unloading block; 9. Truss chord support plate; 10. Angle bracket; 11. Anchorage. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1 like Figures 1-8 As shown, a vertical lifting structure includes: Structural steel columns 1 are spaced apart along the longitudinal direction, and two corresponding structural steel columns 1 in the longitudinal direction have a height difference. A base plate 101 is installed on the top of each column. The lifting bracket 2 is installed on the top base plate 101 of the structural column 1; Lifter 3, which is installed at the cantilever end of lifting bracket 2, and at least two are arranged at intervals along a transverse column; Steel strand 4, the upper section of which is connected to the hoist 3; Support beam 5 is arranged horizontally and installed on the lower section of steel strand 4; The first node support 6 is installed in the middle of the base plate 101; The second node support 7 is installed in the middle of the support beam 5.

[0031] With this structure, the support beam 5 is placed under the second node support 7. When the second node support 7 is connected to the steel truss node, it is located below the steel truss node. The two exert pressure on each other to avoid directly applying pressure to the steel truss node. The second node support 7 is directly welded to the steel truss node. Subsequently, only the second node support 7 and the support beam 5 need to be disassembled.

[0032] In this embodiment, it also includes: The unloading block 8 is installed on the front and rear sides of the first node support 6 and is installed on the base plate 101 at intervals along the longitudinal direction. The truss chord support plate 9 is installed on the top of the unloading block 8, and a slot 901 is provided in the middle of it.

[0033] With this structure, during unloading, the steel truss is first transferred to the unloading block 8, and then gradually unloaded by the unloading block 8. The subsequent end truss nodes are gradually placed on the first node support 6, and the welding of the end truss nodes and the first node support 6 is completed. The slot 901 is beneficial for supporting the lower chord of the subsequent end truss, so as to improve construction efficiency.

[0034] In this embodiment, a rib plate 102 is installed between the structural steel column 1 and the base plate 101, and multiple rib plates are arranged at intervals along the circumference.

[0035] With this structure, the substrate 101 can be stably supported.

[0036] In this embodiment, corner brackets 10 are welded around the unloading block 8, and the corner brackets 10 are bolted to the base plate 101.

[0037] With this structure, the unloading block 8 is detachably fixed to the substrate 101.

[0038] In this embodiment, the supporting beam 5 is made of double-section I-beams, and an anchor 11 is installed in the middle of the double-section I-beams. The steel strands are threaded through the anchor 11. The anchor 11 is installed on the upper and lower flanges of the double-section I-beams.

[0039] With this structure, the anchor 11 is conducive to anchoring the steel strand to the support beam 5, and the support beam 5 is anchored both above and below to improve stability.

[0040] In this embodiment, the lifting bracket 2 adopts a frame structure. The four legs 201 of the frame structure are mounted on the base plate 101 using I-beams. The top longitudinal beam 202 is made of double I-beams and cantilevered out of the legs 201 along the longitudinal direction. The lifting device 3 is installed on the cantilevered end. The two legs 201 arranged side by side along the transverse direction are connected by a crossbeam 203, which is also made of I-beams.

[0041] With this structure, the lifting bracket 2 is easy to install, and diagonal bracing can be installed between the cantilever end and the support leg 201 to improve stability.

[0042] In this embodiment, the bottom of the second node support 7 is fixed on the pad 12, and the four corners of the pad 12 are fastened to the support beam 5 by bolts.

[0043] With this structure, the pad 12 is easy to disassemble.

[0044] This utility model mainly adopts the method of indirectly supporting the bottom surface of the node to lift the steel truss upward, which can increase the contact area with the steel truss node. Moreover, the node part of the steel truss is under compression rather than tension, which can avoid tensile stress from damaging the connection part and avoid tensile bending deformation. The node has a stronger ability to resist compressive deformation, thus minimizing the impact on the shape of the steel truss during the lifting process.

[0045] Example 2 like Figures 1-6 As shown, the improvement steps of Example 1 are as follows: Step 1: The first step is to lift the steel truss structure in the lifting area and assemble it into an integral lifting unit on the ground directly below its installation position; Step 2: Install lifting brackets (upper lifting points) on the top of the structural steel columns and install hydraulic synchronous lifting system equipment, including hydraulic pump power system, lifting device, sensors, etc.; install temporary support beams and node supports for the lower lifting point at the positions corresponding to the upper lifting point of the lifting unit; install special anchors and special steel strands between the upper and lower lifting points. Step 3: Debug the hydraulic synchronous lifting system; tension the steel strands. If some steel strands are slack, tension them individually to tighten them and ensure that all steel strands are under maximum and uniform stress; check whether the steel truss structure lifting unit and all temporary measures for hydraulic synchronous lifting meet the design requirements; after confirming that everything is correct, load the load in stages according to the design load of 20%, 40%, 60%, 80%, 90%, and 100% until the lifting unit is detached from the assembly jig; after the lifting unit is lifted about 200mm, stop lifting; fine-tune the elevation of each lifting point of the lifting unit to make it level and let it stand for 12 hours; Step 4: Re-inspect the steel truss structure lifting unit and the temporary hydraulic synchronous lifting measures, including the supports and lowering points for any abnormalities; after confirming that there are no abnormalities, begin the formal lifting; use the hydraulic synchronous lifting system to lift the steel truss structure lifting unit to about 250mm from the installation elevation and then pause the lifting. Step 5: Measure the actual dimensions of each point of the lifting unit, check and process them against the design values, reduce the lifting speed, and continue to lift the floating plate structure closer to the design position. Each lifting point is adjusted and jogged using the "fine-tuning and jogging" function of the computer system to ensure that each lifting point reaches the design position and meets the docking requirements. After the steel truss structure lifting unit is in place, insert the rods to form a whole. Step 6: After the steel truss structure connection is completed, the hydraulic lifting system unloads at a single point, transferring the weight of the steel truss structure to the structural steel columns, achieving the design state; after the welds pass the flaw detection inspection, the hydraulic synchronous lifting system unloads until the steel strands are completely slack, allowing the roof structure to be positioned as a whole on the structural steel columns; the hydraulic synchronous lifting system and other temporary lifting facilities are all dismantled, and the remaining post-installed members are installed, completing the steel truss lifting and installation work.

[0046] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. A vertical lifting structure, characterized in that... include: Structural steel columns (1) are spaced apart along the longitudinal direction, and two corresponding structural steel columns (1) in the longitudinal direction have a height difference, and a base plate (101) is installed on the top of them. The lifting bracket (2) is installed on the top base plate (101) of the structural steel column (1); Lifter (3), which is installed at the cantilever end of the lifting bracket (2), and at least two are spaced apart along a transverse column; The upper section of the steel strand (4) is connected to the hoist (3); The support beam (5) is arranged horizontally and installed on the lower section of the steel strand (4); The first node support (6) is installed in the middle of the base plate (101); The second node support (7) is installed in the middle of the support beam (5).

2. The vertical lifting structure according to claim 1, characterized in that... Also includes: The unloading block (8) is installed on the front and rear sides of the first node support (6) and is installed on the base plate (101) at intervals along the longitudinal direction; A truss chord support plate (9) is installed on top of the unloading block (8), and a slot (901) is provided in the middle of it.

3. The vertical lifting structure according to claim 1, characterized in that... Ribs (102) are installed between the structural steel column (1) and the base plate (101), and multiple ribs are arranged at intervals along the circumference.

4. The vertical lifting structure according to claim 2, characterized in that... The unloading block (8) is welded with corner brackets (10) around its perimeter, and the corner brackets (10) are bolted to the base plate (101).

5. The vertical lifting structure according to claim 1, characterized in that... The supporting beam (5) is made of double-section I-beams, and an anchor (11) is installed in the middle of the double-section I-beams. The steel strand is threaded through the anchor (11). The anchor (11) is installed on the upper and lower flanges of the double-section I-beams.

6. The vertical lifting structure according to claim 1, characterized in that... The lifting support (2) adopts a frame structure. The four legs (201) of the frame structure are installed on the base plate (101) using I-beams. The top longitudinal beam (202) is made of double I-beams and cantilevered out along the longitudinal direction of the legs (201). The lifting device (3) is installed on the cantilevered end. The two legs (201) arranged side by side along the transverse direction are connected by a crossbeam (203), which is also made of I-beams.

7. The vertical lifting structure according to claim 1, characterized in that... The bottom of the second node support (7) is fixed on the pad (12), and the four corners of the pad (12) are fastened to the support beam (5) by bolts.

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