A quick-assembly and disassembly space frame lower chord lifting and reinforcement device

Abstract

This utility model discloses a quick-assembly and disassembly lifting and reinforcing device for the lower chord of a space frame, comprising a steel space frame, which is lifted with the assistance of one or more brackets. The steel space frame is detachably fixed to the brackets by a fixing component, and lifting lugs are provided on the brackets. Steel wire ropes are connected to the lifting lugs for hoisting the steel space frame. The brackets include horizontal bars and vertical bars, which are arranged perpendicularly to each other. The fixing component includes at least two U-shaped screws, which are detachably installed on the brackets by nuts and fix the lower chord of the steel space frame. This device effectively solves the problem of excessive stress in the lower chord caused by insufficient cross-section of the steel space frame members during construction, without requiring changes to the original steel space frame structure, effectively avoiding increased workload and costs due to design changes.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a quick-assembly and disassembly-reinforcement device for lifting and reinforcing the lower chord of a space frame. Background Technology

[0002] During the lifting construction of steel space frames, the lifting point is usually located at the lower chord node of the space frame for reasons of construction convenience and structural stress characteristics. However, during this construction process, the three lower chord members connected to the lower chord node often experience excessive stress under the lifting load. When excessive stress occurs, the common solution in the industry is to communicate with the structural designer to increase the cross-section of the lower chord members to enhance their load-bearing capacity.

[0003] However, this traditional approach has many drawbacks. Firstly, increasing the cross-section of the lower chord significantly alters the mechanical properties and geometric dimensions of the original structure. This necessitates that the structural designer recalculate, review, and redesign the structure, leading to new drawings. This undoubtedly increases the time required for design changes and severely impacts the construction schedule. Secondly, altering the lower chord cross-section increases material usage and generates additional processing and installation work, directly increasing the workload and cost. Furthermore, this permanent structural modification may have potential impacts on subsequent structural maintenance, renovation, and the structure's lifespan.

[0004] With the increasing demands for construction efficiency, cost control, and structural safety in the construction industry, existing methods of addressing excessive stress in the lower chord by increasing its cross-section are no longer sufficient to meet practical engineering needs. Therefore, there is an urgent need to develop a new technology or device that can quickly and effectively reinforce the lower chord of a steel space frame without altering the original structural design, in order to address the problem of excessive stress in the lower chord during lifting construction and achieve the goals of rapid construction and cost reduction. Utility Model Content

[0005] The purpose of this invention is to provide a quick-assembly and disassembly lifting and reinforcement device for the lower chord of a steel space frame, which solves the problem of excessive stress in the lower chord during the existing steel space frame lifting construction process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-assembly and disassembly lifting and reinforcement device for the lower chord of a space frame includes a steel space frame, which is lifted with the assistance of one or more brackets.

[0008] The steel space frame is detachably fixed to the bracket by a fixing component. The bracket is provided with lifting lugs, and steel wire ropes are connected to the lifting lugs for hoisting the steel space frame.

[0009] The bracket includes a horizontal bar and a vertical bar, which are arranged perpendicularly to each other;

[0010] The fixing assembly includes at least two U-shaped screws, which are detachably mounted on the bracket by nuts and fix the lower chord of the steel space frame.

[0011] Preferably, the bracket further includes two diagonal braces, which are obliquely connected between the horizontal bar and the vertical bar.

[0012] Preferably, multiple support slots are adjustablely installed on the bracket, and the bottom of the steel mesh frame is placed in the support slot; the top surface of the support slot is an arc surface, the sphere of the steel mesh frame is placed in the arc surface, and bolts are fixed at the bottom of the support slot, and the bolts are adjustablely installed on the bracket.

[0013] Preferably, the bracket has multiple elongated holes, and the bolts are adjustablely installed in the elongated holes.

[0014] Preferably, a plurality of fixing lugs are provided at the bottom of the bracket, and the U-shaped screw is detachably installed in the fixing lugs.

[0015] Preferably, a lifting lug is provided at the lifting end of the longitudinal rod.

[0016] In this invention, during lifting construction, this device can be quickly installed at the lower chord of the steel space frame, forming an integral whole with the steel space frame to share the load and ensure the structural safety.

[0017] After the lifting is completed, the device can be quickly disassembled, saving construction time. It can be reused, achieving green and environmentally friendly operation, and is suitable for lifting operations of steel space frames within a certain size range.

[0018] This device effectively solves the problem of excessive stress in the lower chord due to insufficient cross-section of steel space frame members during construction. It eliminates the need to change the original steel space frame structure and effectively avoids increased workload and costs caused by design changes.

[0019] It is quick to assemble and disassemble, and reusable. It ensures the safety, quality, and timely completion of the installation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of part of the structure of this utility model;

[0022] Figure 3 This is a top view of another embodiment of the structure of this utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the support groove structure of this utility model;

[0024] In the diagram: 1. Bracket; 2. Fixing component; 3. Steel space frame; 4. Lifting lug; 5. Support groove; 10. Horizontal bar; 11. Vertical bar; 12. Diagonal brace; 20. U-shaped screw; 21. Fixing ear plate; 50. Arc surface; 51. Bolt. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-4 The device shown is a quick-assembly and disassembly lifting and reinforcement device for the lower chord of a space frame, comprising a steel space frame 3, which is lifted with the assistance of one or more brackets 1.

[0027] The steel space frame 3 is detachably fixed to the bracket 1 by the fixing component 2. The bracket 1 is provided with a lifting lug 4. The steel wire rope is connected to the lifting lug 4 for hoisting the steel space frame 3. Specifically, a lifting lug 4 is provided at the lifting end of the longitudinal rod 11.

[0028] The bracket 1 includes a horizontal bar 10 and a vertical bar 11, which are arranged vertically between each other. The horizontal bar 10 and the vertical bar 11 are made of square steel tubing.

[0029] The fixing component 2 includes at least two U-shaped screws 20. The U-shaped screws 20 are detachably mounted on the bracket 1 by nuts and fix the lower chord of the steel space frame 3, thereby transmitting the force at the nodes of the steel space frame 3 to the bracket 1. Multiple fixing lugs 21 are welded to the bottom of the bracket 1, and the U-shaped screws 20 are detachably mounted inside the fixing lugs 21. The fixing lugs 21 are made of flat steel.

[0030] In one embodiment, the bracket 1 further includes two diagonal braces 12, which are obliquely connected between the horizontal bar 10 and the vertical bar 11.

[0031] In a preferred embodiment, multiple support slots 5 are adjustablely mounted on the bracket 1, and the bottom of the steel space frame 3 is placed in the support slots 5. Specifically, the top surface of the support slot 5 is an arc surface 50, and the sphere of the steel space frame 3 is placed on the arc surface 50. Bolts 51 are fixed to the bottom of the support slot 5 by welding or bonding, and the bolts 51 are adjustablely mounted on the bracket 1. Multiple elongated holes are provided on the bracket 1, and the bolts 51 are adjustablely mounted in the elongated holes. The adjustable installation can accommodate auxiliary lifting operations for steel space frames 3 of different sizes.

[0032] The usage method includes the following steps:

[0033] Step 1: The steel space frame 3 is assembled on the ground;

[0034] Step 2: Place bracket 1 at the lower chord lifting point of steel space frame 3;

[0035] Step 3: Secure the U-shaped screw 20 to the root of the node, pass it through the hole in the fixing ear plate 21, and tighten the nut;

[0036] Step 4: After the steel space frame 3 is lifted and installed, remove the U-shaped screw 20 and then remove the bracket 1.

[0037] The above embodiments are merely illustrative of the concept and implementation of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical solutions without substantial changes are still within the scope of protection.

Claims

1. A quick-assembly and disassembly-compatible lower chord lifting and reinforcement device for a space frame, comprising a steel space frame (3), characterized in that: The steel space frame (3) is lifted with the assistance of one or more brackets (1); The steel grid frame (3) is detachably fixed to the bracket (1) by the fixing component (2). The bracket (1) is provided with a lifting lug (4), and the steel wire rope is connected to the lifting lug (4) for hoisting the steel grid frame (3). The bracket (1) includes a crossbar (10) and a longitudinal bar (11), which are arranged vertically between each other; The fixing component (2) includes at least two U-shaped screws (20), which are detachably mounted on the bracket (1) by means of nuts and fix the lower chord of the steel grid frame (3).

2. The quick detachable bottom chord lifting and reinforcing device of the space grid structure according to claim 1, characterized in that: The bracket (1) also includes two diagonal braces (12), which are obliquely connected between the horizontal bar (10) and the vertical bar (11).

3. The detachable truss bottom chord lifting reinforcement device according to claim 1, characterized in that: Multiple support slots (5) are adjustablely installed on the bracket (1), and the bottom of the steel mesh frame (3) is placed in the support slot (5); the top surface of the support slot (5) is an arc surface (50), the sphere of the steel mesh frame (3) is placed in the arc surface (50), and a bolt (51) is fixed at the bottom of the support slot (5), and the bolt (51) is adjustablely installed on the bracket (1).

4. The quick detachable bottom chord lifting and reinforcing device of claim 3, wherein: Multiple elongated holes are provided on the bracket (1), and the bolt (51) is adjustablely installed at the elongated holes.

5. The detachable roof truss lifting reinforcement device of claim 1, wherein: Multiple fixing lugs (21) are provided at the bottom of the bracket (1), and the U-shaped screw (20) is detachably installed in the fixing lugs (21).

6. The detachable roof truss lifting reinforcement device of claim 1, wherein: A lifting lug (4) is provided at the lifting end of the longitudinal rod (11).

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