Crossing middle column double lifting point lifting support

Abstract

The application relates to a cross-middle-column double-hoisting-point lifting support. The lifting support comprises hydraulic lifters, vertical columns arranged on the two sides of a cross-middle-column and a crossbeam arranged at the upper ends of the vertical columns, the lower ends of the vertical columns are arranged on the sides of the cross-middle-column through fixing assemblies, and the vertical columns on the two sides of the cross-middle-column jointly support the crossbeam; two hydraulic lifters are arranged at the two ends of the crossbeam respectively. The hydraulic lifters are arranged on the two sides of the cross-middle-column through the vertical columns and the crossbeam, and the roof steel net frame on the two sides of the cross-middle-column can be simultaneously lifted.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and in particular to a double-suspension-point lifting support for a central column. Background Technology

[0002] Currently, the common method for installing roof steel space frames is as follows: a hydraulic lifter is installed on the top of the column where the roof steel space frame needs to be installed, and lifting points are set on the roof steel space frame. The hydraulic lifter is connected to the lifting points on the roof steel space frame by steel strands. The hydraulic lifter pulls the steel strands to lift the roof steel space frame. When the roof steel space frame reaches the preset height, it is fixed.

[0003] Patent application number CN202121445910.2 discloses a high-altitude lifting support for ultra-large span steel structure space frame roofs, which solves the problem of how to install hydraulic lifters on the top of the columns. However, the lifting support of this solution can only install one hydraulic lifter in one direction, and is only applicable to the installation of roof steel space frames on the side columns. It cannot simultaneously lift the roof steel space frames on both sides of the mid-span column. Moreover, the lifting support of the above solution is complex, occupies a lot of space, and easily hinders the fixing of the roof steel space frame.

[0004] Therefore, there is an urgent need for a simple lifting support structure that can simultaneously lift the roof steel space frame on both sides of the column. Utility Model Content

[0005] In order to install hydraulic lifters on both sides of the central column while avoiding the lifting bracket from obstructing the fixation of the roof steel grid, this application provides a central column double-suspension lifting bracket.

[0006] This application provides a double-suspension-point lifting bracket spanning a central column, employing the following technical solution: A double-suspension-point lifting bracket for a central column includes columns disposed on both sides of a central column and a crossbeam disposed at the upper end of the columns. The lower end of the columns is disposed on the side of the central column by a fixing component. The crossbeam is supported by the columns on both sides of the central column. Two hydraulic lifters are respectively disposed at both ends of the crossbeam.

[0007] By adopting the above technical solution, the crossbeams are supported by columns fixed on both sides of the central column, and the crossbeams support two hydraulic lifters. This allows for the simultaneous lifting of the roof steel space frame on both sides of the central column, facilitating the installation of the roof steel space frame. Furthermore, the entire lifting support system uses less steel, reducing construction costs. The structure is simpler and easier to construct, and the lifting support is less likely to collide or interfere with the roof steel space frame. The installation position of the hydraulic lifters on the crossbeams is determined by the weight of the roof steel space frame; the heavier the roof steel space frame, the closer the hydraulic lifters are to the columns, ensuring that the forces on both sides of the central column are basically balanced, thus solving the problem of eccentric stress on the central column.

[0008] Preferably, the fixing component includes an embedded part and a supporting bracket pre-embedded in the central column. The supporting bracket is set on both sides of the central column through the embedded part, and the lower end of the column is set on the supporting bracket.

[0009] By adopting the above technical solution, the embedded parts increase the fixing strength of the column and provide stronger support.

[0010] Preferably, the embedded component includes two mounting plates arranged opposite each other and an embedded reinforcing bar disposed between the mounting plates. The length of the embedded reinforcing bar is set according to the width of the mid-span column. The two mounting plates are respectively disposed on both sides of the mid-span column. The embedded reinforcing bar and the mounting plates are both embedded in the mid-span column. The side of the mounting plate away from the embedded reinforcing bar is exposed in the mid-span column. The supporting bracket is disposed on the side of the mounting plate exposed in the mid-span column.

[0011] By adopting the above technical solution, the two pre-embedded mounting plates are connected by pre-embedded steel bars, so that the two mounting plates form a whole. The mounting plates are not easy to fall off the mid-span column, the load-bearing capacity of the mounting plates is stronger, and during the pre-embedding process, the pre-embedded steel bars can be tied together with the column steel bars in the mid-span column, which is convenient for fixing.

[0012] Preferably, the supporting bracket is made of box-shaped steel, and the end opening of the supporting bracket is located on the mounting plate.

[0013] By adopting the above technical solution, the supporting bracket can be welded to the mounting plate. Since the box-shaped steel is hollow, there are four welds on both the inside and outside. Under this installation method, the supporting bracket and the mounting plate are more securely fixed. Moreover, the supporting bracket is mainly subjected to the pressure of the column. The box-shaped steel has a large moment of inertia and good bending resistance, which can effectively resist bending moments.

[0014] Preferably, a support web member is provided at the top of the mid-span column, and a through hole is provided on the crossbeam, through which the crossbeam avoids the support web member.

[0015] By adopting the above technical solution, the position of the through hole is determined according to the position of the support web member, which prevents the crossbeam from contacting the support web member on the mid-span column and avoids interference with the installation of the roof steel space frame.

[0016] Preferably, the crossbeam is provided with a reinforcing steel plate around the position of the through hole.

[0017] By adopting the above technical solution, since opening holes in the crossbeam weakens the crossbeam's strength, the strength of the crossbeam at the through-hole position can be enhanced by setting a reinforcing steel plate at the through-hole position 1.

[0018] Preferably, the hydraulic lifter is disposed on the upper surface of the crossbeam, and a wire hole is provided on the crossbeam. The wire hole is located below the hydraulic lifter, and the steel strand passes through the wire hole into the hydraulic lifter.

[0019] By adopting the above technical solution, the hydraulic lifter is installed above the crossbeam. However, the inlet of a typical hydraulic lifter is located at its bottom. To facilitate the operation of the hydraulic lifter, a wire-passing hole is provided on the crossbeam to allow the steel strand to pass through.

[0020] Preferably, the threading hole is connected to the edge of the crossbeam.

[0021] By adopting the above technical solution, the steel strand can be pre-threaded into the hydraulic lifter on the ground and then hoisted onto the lifting frame as a whole. When the hydraulic lifter is placed above the crossbeam, the steel strand can enter the threading hole from the edge of the crossbeam.

[0022] Preferably, the crossbeam is made of box-shaped steel and the column is made of H-shaped steel.

[0023] Box-shaped steel and H-beams have significant advantages such as light weight, high strength and strong bending resistance, which improves construction efficiency and saves costs. The crossbeams made of box-shaped steel can resist bending moments from various angles and have stronger torsional resistance, thus supporting the hydraulic lifter. The columns made of H-beams are lighter and easier to support the crossbeams.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. A crossbeam is supported by symmetrically arranged columns. Two hydraulic lifters are installed at both ends of the crossbeam, which can lift the roof steel grid on both sides of the column at the same time. The force on both sides of the column in the middle span is balanced and not prone to eccentric force. 2. The structure is simple, avoiding collisions and interference between the roof steel grid structure and the lifting support during connection and fixing; 3. The beams are supported by symmetrically arranged mounting plates and pre-embedded steel bars in the mid-span columns, resulting in high overall strength and stronger load-bearing capacity. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure lifting the roof steel grid frame, which is the main embodiment of this application. Temporary members are represented by dense dashed lines. Figure 2 This is an axonometric view of the main overall structure in the embodiments of this application; Figure 3 This is a front view that mainly reflects the overall structure in the embodiments of this application; Figure 4 This is a perspective view illustrating the installation method of the support web members in the embodiments of this application; Figure 5 This is a front view illustrating the installation method of the interlocking space frame in the embodiments of this application. The interlocking space frame is represented by sparse dashed lines.

[0026] Attached reference numerals: 1. Roof steel space frame; 11. Temporary member; 12. Inserted space frame; 13. Support web member; 2. Mid-span column; 3. Column; 4. Fixing component; 41. Embedded part; 411. Mounting plate; 412. Embedded steel bar; 42. Support bracket; 5. Crossbeam; 51. Through hole; 52. Reinforcing steel plate; 53. Through hole; 6. Hydraulic lifter; 7. Steel strand. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail.

[0028] This application discloses a double-suspension-point lifting bracket spanning a central column.

[0029] Reference Figure 1 and 2 A double-lifting-point support structure for a central column includes a hydraulic lifter 6, columns 3 on both sides of the central column 2, and a crossbeam 5 on the upper end of the columns 3. The columns 3 are H-beams, and the crossbeam 5 is a box-shaped steel. The lower end of the columns 3 is fixed to the side of the central column 2 via a fixing component 4. The columns 3 on both sides of the central column 2 jointly support the crossbeam 5. Two hydraulic lifters 6 are respectively located at both ends of the crossbeam 5. When lifting the roof steel grid 1 using steel strands 7, only one bundle of steel strands 7 (multiple steel strands 7 are woven into a bundle, and multiple steel strands 7 are simultaneously stressed) is installed under each hydraulic lifter 6. Therefore, each hydraulic lifter 6 is connected to only one lifting point through the steel strands 7. To avoid stress concentration when the roof steel grid 1 is lifted, temporary members 11 are installed on the roof steel grid 1 to distribute stress and facilitate lifting.

[0030] Reference Figure 1 and 2The hydraulic lifter 6 is installed on the upper surface of the crossbeam 5. A wire-passing hole 53 is provided on the crossbeam 5, located below the hydraulic lifter 6. The steel strand 7 passes through the wire-passing hole 53 into the hydraulic lifter 6, and the wire-passing hole 53 is connected to the edge of the crossbeam 5. The steel strand can enter the wire-passing hole 53 from the edge of the crossbeam 5. During operation, the steel strand 7 can be connected to the hydraulic lifter 6 first, and then hoisted onto the crossbeam 5 together. Two hydraulic lifters 6 are respectively installed at both ends of the crossbeam 5. The two hydraulic lifters 6 can simultaneously lift the roof steel space frame 1 on both sides of the central column 2. The installation position of the hydraulic lifter 6 on the crossbeam 5 is determined according to the weight of the roof steel space frame 1 it is lifting. The greater the weight of the roof steel space frame 1, the closer the hydraulic lifter 6 is to the column 3, ensuring that the forces on both sides of the central column 2 are balanced and preventing eccentric stress.

[0031] Reference Figure 2 and 3 The fixing component 4 includes an embedded part 41 and a supporting bracket 42 pre-embedded in the central column 2. The embedded part 41 includes two mounting plates 411 and multiple embedded steel bars 412 disposed between the two mounting plates 411. The two ends of the embedded steel bars 412 are welded to the sides of the two mounting plates 411 respectively, and the length of the embedded steel bars 412 is set according to the width of the central column 2. The two mounting plates 411 are respectively disposed on both sides of the central column 2. The embedded steel bars 412 are pre-embedded in the central column 2, and the main body of the mounting plate 411 is pre-embedded in the central column 2. The side of the mounting plate 411 away from the embedded steel bars 412 is exposed in the central column 2. The supporting bracket 42 is a hollow box-shaped steel. The end opening of the supporting bracket 42 faces the mounting plate 411 and is welded and fixed to the exposed side of the mounting plate 411. The lower end of the column 3 is welded to the top of the supporting bracket 42.

[0032] Reference Figure 4 and 5The roof steel space frame 1 needs to be supported by the central column 2. The top of the central column 2 is equipped with a support web member 13. The roof steel space frame 1 is fixed to the support web member 13 via a patchwork space frame 12. The patchwork space frame 12 refers to the structure welded after the roof steel space frame 1 is raised to the designated position, used to fix the roof steel space frame 1 to the central column 2. A through-hole 51 is provided on the crossbeam 5. The crossbeam 5 avoids the support web member 13 through the through-hole 51. One end of the support web member 13 is fixed to the top of the central column 2, and the other end passes through the through-hole 51, preventing the crossbeam 5 from contacting the support web member 13 and preventing interference with the installation of the support web member 13. The patchwork space frame 12 consists of multiple crisscrossing bars, connecting the roof steel space frames 1 on both sides and fixing them to the support web member 13. Because the lifting bracket in this embodiment is fixed to the side of the central column 2 and has a simple structure, there is sufficient installation gap between the central column 2 and the crossbeam 5, so the lifting bracket is less likely to interfere with the installation of the interlocking space frame 12. The crossbeam 5 is a hollow box-shaped steel, consisting of a top plate, a bottom plate, and a web plate. Reinforcing steel plates 52 are provided at the positions of the through holes 51 on the crossbeam 5. Four reinforcing steel plates 52 are respectively provided on the upper and lower sides of the top plate and the upper and lower sides of the bottom plate of the crossbeam 5.

[0033] The implementation principle of this embodiment is as follows: Support points are provided by mounting plates 411 pre-embedded in the central column 2. Two columns 3 support each side of the central column 2, and the two columns 3 jointly support a horizontal beam 5. Two hydraulic lifters 6 are installed at both ends of the horizontal beam 5. The hydraulic lifters 6 on both sides of the horizontal beam 5 simultaneously lift the roof steel space frame 1 on both sides of the central column 2. Compared to traditional lifting supports, the structure of this embodiment is simpler, and the lifting support is less likely to interfere with the roof steel space frame 1 that needs to be connected and fixed. To improve the strength of the lifting support, two mounting plates 411 are connected by pre-embedded reinforcing bars 412. Both the pre-embedded reinforcing bars 412 and the mounting plates 411 are pre-embedded in the central column 2, making it less likely for the mounting plates 411 to fall off from the central column 2, resulting in a strong load-bearing capacity of the structure.

[0034] The specific usage process of the lifting bracket in this embodiment is as follows: the pre-embedded steel bar 412 is welded to the mounting plate 411. Before pouring the concrete of the mid-span column 2, the pre-embedded steel bar 412 is tied to the steel bar inside the column to fix the pre-embedded steel bar 412 and the mounting plate 411, and then the concrete is poured to fix it. After the concrete mid-span column 2 reaches the design strength, the supporting bracket 42 is welded on the mounting plate 411. The crossbeam 5 is prefabricated in the factory. The crossbeam 5 has a wire hole 53, a rod hole 51 and a reinforcing steel plate 52. The crossbeam 5 and the column 3 are assembled into one piece on the ground and then hoisted together to the supporting bracket 42 and welded to fix it. One end of the steel strand 7 is threaded into the hydraulic lifting device 6, and then the hydraulic lifting device 6 and the steel strand 7 are hoisted together to the crossbeam 5. The other end of the steel strand 7 hangs freely from the wire hole 53 reserved on the crossbeam 5 to the ground.

[0035] When lifting the roof steel space frame 1, first assemble the roof steel space frame 1 and set up lifting points on the roof steel space frame 1. Perform local reinforcement treatment near the lifting points. In some cases, it is necessary to weld temporary rods 11 for auxiliary fixation. After the lifting points are set up, connect one end of the steel strand 7 that hangs down to the ground to the lifting points on the roof steel space frame 1. Finally, connect and install the pump source system to synchronously lift the roof steel space frame 1 on both sides of the central column 2. After lifting the roof steel space frame 1 to the design height, use the interlocking space frame 12 to fix the support web members 13 on the central column 2 to the roof steel space frame 1 on both sides of the central column 2, and complete the installation of the roof steel space frame 1.

[0036] It should be noted that: the general roof steel space frame 1 has a large volume, so multiple lifting devices need to be set in multiple directions to lift it synchronously in order to maintain balance. The embodiment of this application describes the lifting support set in the middle of the span, and the lifting support is only connected to a lifting point at the edge of the roof steel space frame 1 through the steel strand 7. Other lifting devices are also set in other positions of the roof steel space frame 1 to lift the roof steel space frame 1 synchronously and ensure the level of the roof steel space frame 1.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-suspension-point lifting bracket spanning a central column, comprising a hydraulic lifting device (6), characterized in that: It includes columns (3) set on both sides of the central column (2) and a crossbeam (5) set on the upper end of the column (3). The lower end of the column (3) is set on the side of the central column (2) by a fixing component (4). The crossbeam (5) is supported by the columns (3) on both sides of the central column (2). The two hydraulic lifters (6) are respectively installed at both ends of the crossbeam (5).

2. The double-suspension-point lifting bracket for a mid-span column according to claim 1, characterized in that: The fixing component (4) includes an embedded part (41) and a supporting bracket (42) embedded in the central column (2). The supporting bracket (42) is set on both sides of the central column (2) through the embedded part (41), and the lower end of the column (3) is set on the supporting bracket (42).

3. The double-suspension-point lifting bracket for a mid-span column according to claim 2, characterized in that: The embedded part (41) includes two mounting plates (411) arranged opposite to each other and an embedded steel bar (412) disposed between the mounting plates (411). The length of the embedded steel bar (412) is set according to the width of the mid-span column (2). The two mounting plates (411) are respectively set on both sides of the central column (2). The pre-embedded steel bar (412) and the mounting plate (411) are both pre-embedded in the central column (2). The side of the mounting plate (411) away from the pre-embedded steel bar (412) is exposed in the central column (2). The supporting bracket (42) is set on the side of the mounting plate (411) exposed in the central column (2).

4. The double-suspension-point lifting bracket for a mid-span column according to claim 3, characterized in that: The supporting bracket (42) is a box-shaped steel, and the end opening of the supporting bracket (42) is provided on the mounting plate (411).

5. A double-suspension-point lifting bracket for a mid-span column according to claim 1, characterized in that: The top of the central column (2) is provided with a support web member (13), and the crossbeam (5) is provided with a through hole (51). The crossbeam (5) avoids the support web member (13) through the through hole (51).

6. A double-suspension-point lifting bracket for a mid-span column according to claim 5, characterized in that: The crossbeam (5) is provided with a reinforcing steel plate (52) around the position of the through hole (51).

7. A double-suspension-point lifting bracket for a mid-span column according to claim 1, characterized in that: The hydraulic lifter (6) is disposed on the upper surface of the crossbeam (5). A wire hole (53) is provided on the crossbeam (5). The wire hole (53) is located below the hydraulic lifter (6). The steel strand (7) passes through the wire hole (53) and enters the hydraulic lifter (6).

8. A double-suspension-point lifting bracket for a mid-span column according to claim 7, characterized in that: The threading hole (53) is connected to the edge of the crossbeam (5).

9. A double-suspension-point lifting bracket for a mid-span column according to claim 1, characterized in that: The crossbeam (5) is a box-shaped steel, and the column (3) is an H-shaped steel.

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