Whole lifting structure of large-span truss system in narrow space

Abstract

This invention discloses an overall lifting structure for a large-span truss system in a confined space, comprising supporting steel columns and lifting brackets. Connecting steel columns are provided on both sides of the supporting steel columns. A truss bracket is provided on the inner side of the supporting steel columns, and a lifting bracket is provided on the side of the truss bracket. The end face of the lifting bracket is provided with a side reinforcement component and a vertical reinforcement component. A bottom vibration damping component is provided at the bottom end of the lifting bracket. A notched ring is provided on the inner side of the bottom vibration damping component, and a support component is provided on the side of the notched ring. A connecting support is provided between adjacent support components. In this invention, the lifting bracket installed on the truss bracket serves as the upper lifting point. Even when the height between some of the trusses to be lifted and the roof is insufficient to allow for the installation of additional support brackets, the upper lifting point can still be set, ensuring that the trusses to be lifted can still be normally lifted and installed even in a confined space between the installation location and the roof.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology, specifically to an overall lifting structure for a large-span truss system in a confined space. Background Technology

[0002] Traditional truss lifting methods involve placing the upper lifting point supports on the structure to be lifted, typically attached to vertical load-bearing components such as columns. The lower lifting points are connected to the structure, and hydraulic lifting equipment is used to pull ropes to lift the structure, thus replacing traditional hoisting methods. However, for multi-story, large-span truss structures, considering the possibility of additional large-span structures above, the roof must be installed first before installing the multi-story truss structure. Due to the unique structural characteristics of multi-story, large-span truss structures, while a whole-structure lifting method is used, in some locations, the height difference between the roof and the truss is insufficient to install the upper lifting point supports for the whole-structure lifting, making it impossible to install the hydraulic lifting equipment. This results in some lower lifting points not being effectively lifted during the whole-structure lifting process, failing to achieve the desired overall lifting effect. Therefore, to address these issues, a whole-structure lifting structure for large-span truss systems within confined spaces is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide an overall lifting structure for a large-span truss system in a confined space, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an overall lifting structure for a large-span truss system in a confined space, comprising supporting steel columns and lifting brackets, wherein connecting steel columns are provided on both sides of the supporting steel columns, truss brackets are provided on the inner side of the supporting steel columns, lifting brackets are provided on the sides of the truss brackets, side reinforcement components and vertical reinforcement components are provided on the end face of the lifting brackets, bottom vibration damping components are provided at the bottom end of the lifting brackets, notched rings are provided on the inner side of the bottom vibration damping components, support components are provided on the sides of the notched rings, and connecting supports are provided between adjacent support components.

[0005] Furthermore, the side reinforcement component is fixed to the surface of the connecting steel column by bolts, and the vertical reinforcement component is fixed to the surface of the supporting steel column by bolts. The side reinforcement component, the connecting steel column, and the truss bracket are arranged in a triangular reinforcement configuration, and the vertical reinforcement component, the supporting steel column, and the truss bracket are arranged in a triangular reinforcement configuration.

[0006] Furthermore, the inner side of the lifting bracket is provided with a steel strand placement groove for placing the steel strand after the hydraulic lifting device is installed on the lifting bracket. The inner side of the bottom anti-vibration component is provided with a rotating groove, and the notched ring is set inside the rotating groove for positioning the rotation of the notched ring. The notched ring is set below the steel strand placement groove, so that the steel strand is simultaneously placed in the steel strand placement groove and the notched ring.

[0007] Furthermore, the bottom vibration damping component has a connecting component at its top end. The connecting component passes through the inner side of the lifting bracket and connects the bottom vibration damping component to the lifting bracket. The top end of the connecting component has an anti-detachment protrusion located inside the lifting bracket to prevent the connecting component from falling out of the lifting bracket.

[0008] Furthermore, adjacent support assemblies are connected by bolts with positioning shafts, which penetrate the inner side of the connecting support. The positioning shafts are used to position the connecting support between adjacent support assemblies and to position the shaft during the rotation of the connecting support.

[0009] Furthermore, the top of the connecting support is detachably connected to a bolt connection washer by bolts, and the end face of the vertical reinforcement component is provided with a spiral groove corresponding to the bolt on the bolt connection washer, so as to facilitate the fit and correspondence between the bolt connection washer and the end face of the vertical reinforcement component.

[0010] Furthermore, a method for lifting a large-span truss system as a whole in a confined space includes the following steps:

[0011] Step 1: Use a hydraulic lifter as the lifting device and a flexible steel strand as the load-bearing sling. Use wedge-shaped anchors at both ends of the hydraulic lifter to automatically lock the steel strand. Install the lifting bracket on both sides of the truss bracket with bolts, and then install the hydraulic lifter on the lifting bracket.

[0012] Step 2: Use bolts to install the side reinforcement components and the vertical reinforcement components between the lifting bracket and the connecting steel column, and between the lifting bracket and the supporting steel column, respectively.

[0013] Step 3: Rotate the connecting support to a horizontal position with the positioning shaft as the center, and then rotate the notched ring until its notch coincides with the notch of the bottom anti-vibration component. Place the flexible steel strand through the notch into the notched ring and the steel strand placement groove inside the lifting bracket.

[0014] Step 3: Connect the bolt connection washer to the connecting support with bolts, then rotate the notched ring to make the connecting support face the vertical reinforcement component, adjust the connecting support to make the bolt connection washer fit with the vertical reinforcement component and fix it with bolts;

[0015] Step 4: Evenly and equidistantly set the lower lifting points at the lower chord position of the truss to be lifted, and connect the flexible steel strands connected to the hydraulic lifting device to the hooks of the lower lifting points used to lift the truss. When the wedge-shaped anchors at both ends of the hydraulic lifting device are working, they automatically lock the steel strands and lift the truss to be lifted as a whole.

[0016] Compared with the prior art, in this invention, the lifting bracket installed on the truss bracket serves as the upper lifting point, eliminating the need for an additional upper lifting point bracket on the supporting steel column. Even when the height between some of the trusses to be lifted and the roof is insufficient to install an additional height bracket, the upper lifting point can still be set up, ensuring that the trusses to be lifted can still be lifted and installed normally even when the space between the installation position and the roof is narrow.

[0017] Compared with the prior art, in this invention, the lifting bracket for placing the load-bearing sling steel strand is extended downwards via the bottom anti-vibration component. The bottom anti-vibration component first limits the movement of the steel strand when it is unstable, preventing it from deviating from its original trajectory during irregular movement. Then, the steel strand is further limited by the steel strand placement groove inside the lifting bracket, so that the hydraulic lifter pulls the limited and stabilized steel strand, ensuring that the steel strand at the lifting point is always in a stable traction state. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the drawings used in the technical description of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the installation structure of the lifting bracket of the present invention.

[0021] Figure 3 This is a schematic diagram of the assembly structure of the bottom vibration damping component of the present invention.

[0022] In the diagram: 1. Supporting steel column; 2. Connecting steel column; 3. Truss bracket; 4. Lifting support; 5. Side reinforcement assembly; 6. Vertical reinforcement assembly; 7. Bottom vibration damping assembly; 8. Connecting assembly; 9. Rotary groove; 10. Notched ring; 11. Support assembly; 12. Positioning shaft; 13. Connecting support; 14. Bolt connection washer. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] Please see Figure 1-3 This invention provides an overall lifting structure for a large-span truss system in a confined space, comprising a supporting steel column 1 and a lifting bracket 4. Connecting steel columns 2 are provided on both sides of the supporting steel column 1. A truss bracket 3 is provided on the inner side of the supporting steel column 1. The lifting bracket 4 is provided on the side of the truss bracket 3. Side reinforcement components 5 and vertical reinforcement components 6 are provided on the end face of the lifting bracket 4. A bottom vibration damping component 7 is provided at the bottom end of the lifting bracket 4. A notched ring 10 is provided on the inner side of the bottom vibration damping component 7. A support component 11 is provided on the side of the notched ring 10. A connecting support 13 is provided between adjacent support components 11.

[0026] Specifically, the side reinforcement component 5 is fixed to the surface of the connecting steel column 2 by bolts, and the vertical reinforcement component 6 is fixed to the surface of the supporting steel column 1 by bolts. The side reinforcement component 5, the connecting steel column 2, and the truss bracket 3 are arranged in a triangular reinforcement configuration, and the vertical reinforcement component 6, the supporting steel column 1, and the truss bracket 3 are arranged in a triangular reinforcement configuration.

[0027] Specifically, the inner side of the lifting bracket 4 is provided with a steel strand placement groove for placing the steel strand after the hydraulic lifting device is installed on the lifting bracket 4. The inner side of the bottom anti-vibration component 7 is provided with a rotating groove 9, and a notched ring 10 is set inside the rotating groove 9 for positioning the rotation of the notched ring 10. The notched ring 10 is set below the steel strand placement groove, so that the steel strand is simultaneously placed in the steel strand placement groove and the notched ring 10.

[0028] By adopting the above technical solution: In this invention, the lifting bracket 4 installed on the truss bracket 3 serves as the upper lifting point, eliminating the need for an additional height upper lifting point bracket on the supporting steel column 1. Even when the height between some of the trusses to be lifted and the roof is insufficient to install an additional height bracket, the upper lifting point can still be set up, ensuring that the trusses to be lifted can still be lifted and installed normally even when the space between the installation position and the roof is narrow.

[0029] It should be noted that the lifting method for a large-span truss system in a confined space provided by the present invention includes the following steps: placing the lifting support 4 at both ends of the truss bracket 3 and fixing it with bolts; then placing the side reinforcement component 5 horizontally with both ends attached to the lifting support 4 and the connecting steel column 2 respectively, and fixing it with bolts, so that the connecting steel column 2, the truss bracket 3 and the side reinforcement component 5 form a stable triangular structure; setting and adjusting the vertical reinforcement component 6 vertically so that both ends are attached to the lifting support 4 and the supporting steel column 1 respectively and fixed with bolts, so that the supporting steel column 1, the truss bracket 3 and the vertical reinforcement component 6 form a stable triangular structure; horizontally and vertically reinforcing the lifting support 4; using a hydraulic lifter as the lifting tool and a flexible steel cable as the load-bearing rigging; the hydraulic lifter is installed on the lifting support 4; and the connecting steel column 2, the truss bracket 3 and the side reinforcement component 5 form a stable triangular structure. The support 13 is rotated to a horizontal position. By driving the support 13, the notched ring 10 rotates until its notch aligns with the notch of the bottom anti-vibration component 7 and the lifting bracket 4. Then, the flexible steel strand is placed in the notched ring 10 and the inner steel strand placement groove of the lifting bracket 4 through the notch. The top of the flexible steel strand is connected to the wedge anchors at both ends of the hydraulic lifter. When the wedge anchors are working, the steel strand is automatically locked. After the flexible steel strand is placed, the lower lifting points are evenly spaced at the lower chord of the truss to be lifted. Multiple sets of overall lifting structures are installed on the truss brackets 3 at different positions, and the flexible steel strands of different sets are connected to the hooks of the lower lifting points used to lift the truss. Finally, by starting the hydraulic lifter, the wedge anchors at both ends automatically lock the steel strands and pull the steel strands, thus lifting the truss to be lifted as a whole.

[0030] Example 2

[0031] Please see Figure 1-3 This invention provides an overall lifting structure for a large-span truss system in a confined space, comprising a supporting steel column 1 and a lifting bracket 4. Connecting steel columns 2 are provided on both sides of the supporting steel column 1. A truss bracket 3 is provided on the inner side of the supporting steel column 1. The lifting bracket 4 is provided on the side of the truss bracket 3. Side reinforcement components 5 and vertical reinforcement components 6 are provided on the end face of the lifting bracket 4. A bottom vibration damping component 7 is provided at the bottom end of the lifting bracket 4. A notched ring 10 is provided on the inner side of the bottom vibration damping component 7. A support component 11 is provided on the side of the notched ring 10. A connecting support 13 is provided between adjacent support components 11.

[0032] Specifically, the inner side of the lifting bracket 4 is provided with a steel strand placement groove for placing the steel strand after the hydraulic lifting device is installed on the lifting bracket 4. The inner side of the bottom anti-vibration component 7 is provided with a rotating groove 9, and a notched ring 10 is set inside the rotating groove 9 for positioning the rotation of the notched ring 10. The notched ring 10 is set below the steel strand placement groove, so that the steel strand is simultaneously placed in the steel strand placement groove and the notched ring 10.

[0033] Specifically, the bottom vibration damping component 7 has a connecting component 8 at its top. The connecting component 8 passes through the inside of the lifting bracket 4 and connects the bottom vibration damping component 7 to the lifting bracket 4. The top of the connecting component 8 is provided with an anti-detachment protrusion inside the lifting bracket 4 to prevent the connecting component 8 from falling out of the lifting bracket 4.

[0034] Specifically, a positioning shaft 12 is bolted between adjacent support assemblies 11. The positioning shaft 12 passes through the inner side of the connecting support 13. The positioning shaft 12 is used to position the connecting support 13 between adjacent support assemblies 11 and to position the shaft during the rotation of the connecting support 13.

[0035] Specifically, the top of the connecting support 13 is detachably connected to a bolt connecting washer 14 by bolts, and the end face of the vertical reinforcement component 6 is provided with a spiral groove corresponding to the bolt on the bolt connecting washer 14, so as to facilitate the fit and correspondence between the bolt connecting washer 14 and the end face of the vertical reinforcement component 6.

[0036] By adopting the above technical solution: In this invention, the lifting bracket 4 for placing the load-bearing sling steel strand is extended downwards via the bottom anti-vibration component 7. The overall lifting of the truss in the narrow space results in a relatively short traction length of the steel strand. Repeated lifting and adjustment can easily lead to instability of the steel strand. The bottom anti-vibration component 7 first limits the movement of the steel strand under this condition to prevent the steel strand from deviating from its original trajectory during irregular movement. Then, the steel strand is further limited by the steel strand placement groove in the lifting bracket 4, so that the hydraulic lifter pulls the limited and stable steel strand, ensuring that the steel strand at the lifting point is always in a stable traction state.

[0037] It should be noted that the experimental steps of the overall lifting structure of a large-span truss system in a confined space provided by the present invention are as follows: During the placement of the steel strand, the connecting support 13 is first rotated to a horizontal position around the positioning shaft 12. Driven by the connecting support 13, the notched ring 10 rotates. The flexible steel strand is placed in a state where its notch aligns with the notch of the bottom anti-vibration component 7 and the lifting bracket 4, placing it in the steel strand placement groove inside the notched ring 10 and the lifting bracket 4. The top end of the flexible steel strand is connected to the wedge-shaped anchors at both ends of the hydraulic lifter. When the wedge-shaped anchors are in operation, they automatically lock the steel strand. After completion, the bolt connection washer 14 is connected to the connecting support 13 with bolts. Then, the connecting support 13 is driven again to rotate the notched ring 10 in the opposite direction until the connecting support 13 faces the vertical reinforcement component 6. The angle of the connecting support 13 is adjusted with the positioning shaft 12 as the rotation center so that the bolt connection washer 14 is in contact with the vertical reinforcement component 6 and the bolt connection washer 14 is fixed with bolts. In this state, the connecting support 13 supports the bottom vibration damping component 7, and the notch of the notch ring 10 no longer coincides with the notch of the bottom vibration damping component 7 and the lifting bracket 4. The notched ring 10 protects the steel strand rope, ensuring that the steel strand rope is always located inside the bottom vibration damping component 7.

[0038] Example 3

[0039] The parts that are the same as in Embodiment 2 will not be repeated here. The difference is that after the steel strand is placed in the notch ring 10 and the steel strand placement groove inside the lifting bracket 4, the connecting support 13 is driven to rotate the notch ring 10 until the connecting support 13 and the notch of the bottom anti-vibration component 7 and the lifting bracket 4 are aligned. The connecting support 13 is rotated to a vertical position with the positioning shaft 12 as the rotation center, so that the connecting support 13 is located at the notch of the bottom anti-vibration component 7 and the lifting bracket 4 and is blocked. Finally, the bolt connection washer 14 is placed on the top surface of the lifting bracket 4 and located above the connecting support 13. A long bolt is used to pass through the bolt connection washer 14 and screwed into the connecting support 13 to fix the position of the connecting support 13 and prevent the steel strand from falling out of the lifting bracket 4 during normal traction.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A large-span truss system overall lifting structure in a confined space, comprising supporting steel columns (1) and lifting brackets (4), wherein connecting steel columns (2) are provided on both sides of the supporting steel columns (1), and truss brackets (3) are provided on the inner side of the supporting steel columns (1), characterized in that: The truss bracket (3) is provided with a lifting bracket (4) on its side. The end face of the lifting bracket (4) is provided with a side reinforcement component (5) and a vertical reinforcement component (6). The bottom end of the lifting bracket (4) is provided with a bottom vibration damping component (7). The inner side of the bottom vibration damping component (7) is provided with a notch ring (10). The side of the notch ring (10) is provided with a support component (11). A connecting support (13) is provided between adjacent support components (11).

2. The overall lifting structure of a large-span truss system in a confined space according to claim 1, characterized in that: The side reinforcement component (5) is fixed to the surface of the connecting steel column (2) by bolts, and the vertical reinforcement component (6) is fixed to the surface of the supporting steel column (1) by bolts. The side reinforcement component (5) is arranged in a triangular reinforcement with the connecting steel column (2) and the truss bracket (3), and the vertical reinforcement component (6) is arranged in a triangular reinforcement with the supporting steel column (1) and the truss bracket (3).

3. The overall lifting structure of a large-span truss system in a confined space according to claim 1, characterized in that: The inner side of the lifting bracket (4) is provided with a steel strand placement groove, the inner side of the bottom anti-vibration component (7) is provided with a rotating groove (9), the notched ring (10) is provided inside the rotating groove (9), and the notched ring (10) is located below the steel strand placement groove.

4. The overall lifting structure of a large-span truss system in a confined space according to claim 1, characterized in that: The bottom anti-vibration component (7) has a connecting component (8) at its top. The connecting component (8) passes through the inner side of the lifting bracket (4). The top of the connecting component (8) is located on an anti-detachment protrusion inside the lifting bracket (4).

5. The overall lifting structure of a large-span truss system in a confined space according to claim 3, characterized in that: The adjacent support assemblies (11) are connected by bolts to a positioning shaft (12), which passes through the inner side of the connecting support (13).

6. The overall lifting structure of a large-span truss system in a confined space according to claim 5, characterized in that: The top of the connecting support (13) is detachably connected to a bolt connection washer (14) by bolts, and the end face of the vertical reinforcement component (6) is provided with a spiral groove corresponding to the bolt on the bolt connection washer (14).

7. The lifting method for a large-span truss system overall lifting structure in a confined space according to claim 6, characterized in that, Includes the following steps: Step 1: Use a hydraulic lifter as the lifting tool and a flexible steel strand as the load-bearing sling. Use wedge anchors at both ends of the hydraulic lifter to automatically lock the steel strand. Install the lifting bracket (4) on both sides of the truss bracket (3) with bolts, and then install the hydraulic lifter on the lifting bracket (4). Step 2: Use bolts to install the side reinforcement component (5) and the vertical reinforcement component (6) between the lifting bracket (4) and the connecting steel column (2) and between the lifting bracket (4) and the supporting steel column (1), respectively. Step 3: Rotate the connecting support (13) to the horizontal with the positioning shaft (12) as the center, and then rotate the notched ring (10) until its notch coincides with the notch of the bottom anti-vibration component (7). Place the flexible steel strand through the notch in the notched ring (10) and the inner steel strand placement groove of the lifting bracket (4). Step 3: Connect the bolt connection washer (14) to the connecting support (13) with bolts, then rotate the notched ring (10) so that the connecting support (13) faces the vertical reinforcement component (6), adjust the connecting support (13) so that the bolt connection washer (14) and the vertical reinforcement component (6) are in contact and fixed with bolts; Step 4: Evenly space the lower lifting points at equal intervals on the lower chord of the truss to be lifted, and connect the flexible steel strands connected to the hydraulic lifter to the hooks at the lower lifting points used to lift the truss. When the wedge-shaped anchors at both ends of the hydraulic lifter are working, they automatically lock the steel strands, thus lifting the truss to be lifted as a whole.

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