An assembled steel grid structure

Abstract

The utility model discloses an assembled steel net rack structure relates to roof steel net rack technical field, including vertical support pole, the top movable insertion of arc support of vertical support pole has, the outer wall of vertical support pole is equipped with first jack and second jack, the inner wall movable insertion of second jack has reinforcing cross bar, and one end of reinforcing cross bar passes through cross bar locking assembly and is detachably connected with vertical support pole. The utility model discloses the combination of fixed cylinder, internal thread sleeve and positioning insertion rod realizes quick insertion and thread locking, avoids traditional welding time -consuming problem, and arc support and arc frame positioning rod adopt the clamping cooperation of insertion slot - bearing recess, cooperate bolt, nut fastening, and the installation step is clear, need not complex tool. When disassembling, only need to unscrew internal thread sleeve, bolt and other connecting pieces, can separate components, greatly shorten maintenance time, reduce manpower cost.

Description

Technical Field

[0001] This utility model relates to the field of roof steel space frame technology, specifically to an assembled steel space frame structure. Background Technology

[0002] In the field of modern architecture, steel space frame structures are widely used due to their lightweight, high strength, and flexible design characteristics; however, existing technologies have significant drawbacks:

[0003] The connection methods are complex and inefficient: Traditional steel space frames mostly use on-site welding or high-strength bolts for full bolting. Welding requires professional equipment and is greatly affected by the weather, which can easily cause deformation and stress concentration. Bolt connections require precise alignment and the installation process is complicated, which leads to extended construction period.

[0004] Insufficient structural stability: Lateral support components often rely on a single bolt or welding for fixation, which can easily loosen due to vibration and temperature changes after long-term use, affecting the overall structural safety; the connection node design of arc-shaped components is complex, making it difficult to achieve reliable force transmission.

[0005] Low modularity: Existing space frame components have poor versatility, cannot be quickly adapted to different engineering needs, and are difficult to reuse after disassembly, resulting in resource waste and increased costs.

[0006] To address the aforementioned problems, this invention utilizes an innovative layered plug-in and multi-locking structure to standardize installation steps, ensure reliable structural connections, and enable reusable components, effectively resolving the technical bottlenecks of traditional steel space frame structures. Utility Model Content

[0007] The purpose of this utility model is to provide an assembled steel space frame structure to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] An assembled steel space frame structure includes vertical support rods, with an arc-shaped support rod movably inserted into the top of each vertical support rod. The outer wall of each vertical support rod has a first insertion hole and a second insertion hole, and the inner wall of the second insertion hole has a reinforcing crossbar movably inserted into it. One end of the reinforcing crossbar is detachably and fixedly connected to the vertical support rod through a crossbar locking assembly.

[0010] The crossbar locking assembly includes a fixed cylinder, which is movably inserted into the second insertion hole. One end of the reinforcing crossbar is movably inserted into the inner wall of the fixed cylinder. An internally threaded sleeve is movably sleeved on the outer wall of the reinforcing crossbar. The inner wall of the internally threaded sleeve is threadedly connected to the outer wall of the fixed cylinder near one end.

[0011] The top of the arc-shaped support rod is provided with a receiving groove, and the inner wall of the receiving groove is fitted with an arc frame positioning rod.

[0012] A further improvement of this utility model is that: a positioning insertion hole is provided on the outer wall of the vertical support rod, a positioning rod is movably inserted into the inner wall of the positioning insertion hole, one end of the positioning rod is fixedly connected to the outer wall of the fixed cylinder away from the internal threaded sleeve, a docking ring is rotatably connected to the outer wall of the internal threaded sleeve, and a docking hole for docking with the positioning rod is provided on one side of the docking ring.

[0013] A further improvement of this utility model is that the outer wall of one end of the positioning rod is movably inserted into the inner wall of the docking hole.

[0014] A further improvement of this utility model is that: the bottom surface of the arc frame positioning rod is provided with a slot that mates with the receiving groove, and the receiving groove and the slot are movably connected to each other.

[0015] A further improvement of this utility model is that: a limiting block is fixedly connected to the bottom surface of the arc frame positioning rod, the inner wall of the limiting block is movably engaged with the outer wall of the arc-shaped support rod, a locking block insert rod is provided below the arc frame positioning rod and movably passes through the limiting block, and a nut is threadedly connected to the outer wall of the locking block insert rod near one end.

[0016] A further improvement of this utility model is that: the bottom end of the arc-shaped support rod is fixedly connected to a bottom rod, the top end of the vertical support rod is provided with a receiving groove, and the bottom end of the bottom rod is movably inserted into the inner wall of the receiving groove.

[0017] A further improvement of this utility model is that: the bottom end of the arc-shaped support rod is fixedly connected to a bottom ring, and the bottom ring is detachably fixedly connected to the top of the vertical support rod by bolts.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] 1. This utility model provides an assembled steel space frame structure. Based on a modular installation process, vertical support rods and reinforcing horizontal rods achieve quick insertion and threaded locking through a combination of fixing sleeves, internal threaded sleeves, and positioning rods, avoiding the time-consuming problems of traditional welding. Arc-shaped support rods and arc frame positioning rods use a slot-receiving groove snap-fit ​​connection, secured with bolts and nuts. The installation steps are clear and require no complex tools. Disassembly only requires loosening the internal threaded sleeves, bolts, and other connecting parts to separate the components, significantly shortening maintenance time and reducing labor costs.

[0020] 2. This utility model provides an assembled steel space frame structure. The double locking mechanism (threaded tightening + positioning rod limiting) of the reinforced crossbars can effectively resist horizontal loads and prevent lateral displacement of the structure. The arc-shaped support is fixed by the positioning of the bottom rod and the receiving groove, and the bolts of the bottom ring are used to fix it. With the secondary reinforcement of the limiting block and the locking block insertion rod of the arc frame positioning rod, a stable spatial force system is formed. This layered connection design can evenly transfer the load to the vertical support, avoid stress concentration, and improve the overall seismic and wind resistance performance of the structure.

[0021] 3. This utility model provides an assembled steel space frame structure. All components use standardized insertion holes (such as second insertion holes and positioning insertion holes) and connection structures, allowing for flexible adjustment of the space frame span and curvature according to project requirements. For example, by increasing or decreasing the number of reinforcing crossbars or replacing them with arc-shaped supports of different curvatures, it can be adapted to diverse architectural scenarios such as stadiums and exhibition halls. Simultaneously, the standardized interface design facilitates prefabrication and transportation, reduces on-site processing steps, and improves construction efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the separation structure of the vertical support rod and the reinforcing horizontal rod of this utility model;

[0024] Figure 3 This is a schematic diagram of the crossbar locking assembly of this utility model;

[0025] Figure 4 This is a schematic diagram of the arc-shaped support structure of this utility model;

[0026] Figure 5 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0027] In the diagram: 1. Vertical support rod; 2. Arc-shaped support rod; 3. Reinforcing crossbar; 4. Arc frame positioning rod; 5. First insertion hole; 6. Second insertion hole; 7. Positioning insertion hole; 8. Crossbar locking assembly; 9. Fixing sleeve; 10. Internal threaded sleeve; 11. Positioning rod; 12. Connecting ring; 13. Connecting hole; 14. Bottom rod; 15. Receiving groove; 16. Connecting bottom ring; 17. Receiving groove; 18. Slot; 19. Limiting block; 20. Block insertion rod. Detailed Implementation

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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.

[0029] The present invention will be further described in detail below with reference to embodiments:

[0030] Example 1

[0031] like Figure 1-5 As shown, this utility model provides an assembled steel grid structure, including a vertical support rod 1, an arc-shaped support rod 2 movably inserted into the top of the vertical support rod 1, a first insertion hole 5 and a second insertion hole 6 opened on the outer wall of the vertical support rod 1, a reinforcing crossbar 3 movably inserted into the inner wall of the second insertion hole 6, and one end of the reinforcing crossbar 3 being detachably fixedly connected to the vertical support rod 1 through a crossbar locking assembly 8.

[0032] The crossbar locking assembly 8 includes a fixed cylinder 9, which is movably inserted into the second insertion hole 6. One end of the reinforcing crossbar 3 is movably inserted into the inner wall of the fixed cylinder 9. An internally threaded sleeve 10 is movably sleeved on the outer wall of the reinforcing crossbar 3. The inner wall of the internally threaded sleeve 10 is threadedly connected to the outer wall of the fixed cylinder 9 near one end.

[0033] The top of the arc-shaped support rod 2 is provided with a receiving groove 17, and the inner wall of the receiving groove 17 is fitted with an arc frame positioning rod 4.

[0034] The outer wall of the vertical support rod 1 is provided with a positioning insertion hole 7. The inner wall of the positioning insertion hole 7 is movably connected to a positioning rod 11. One end of the positioning rod 11 is fixedly connected to the outer wall of the fixed cylinder 9 away from the internal threaded sleeve 10. The outer wall of the internal threaded sleeve 10 is rotatably connected to a docking ring 12. One side of the docking ring 12 is provided with a docking hole 13 that docks with the positioning rod 11.

[0035] One end of the positioning rod 11 is movably inserted into the inner wall of the docking hole 13.

[0036] Example 2

[0037] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the bottom surface of the arc frame positioning rod 4 is provided with a slot 18 that mates with the receiving groove 17, and the receiving groove 17 and the slot 18 are movably inserted into each other.

[0038] The bottom surface of the arc frame positioning rod 4 is fixedly connected to a limit block 19. The inner wall of the limit block 19 is movably engaged with the outer wall of the arc support rod 2. A locking rod 20 is provided below the arc frame positioning rod 4, which movably passes through the limit block 19. A nut is threadedly connected to the outer wall of the locking rod 20 near one end.

[0039] The bottom end of the arc-shaped support rod 2 is fixedly connected to a base rod 14, and the top end of the vertical support rod 1 is provided with a receiving groove 15. The bottom end of the base rod 14 is movably inserted into the inner wall of the receiving groove 15. The bottom end of the arc-shaped support rod 2 is fixedly connected to a bottom ring 16, which is detachably fixed to the top of the vertical support rod 1 by bolts.

[0040] Example 3

[0041] like Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the vertical support rod 1, the arc-shaped support rod 2, the reinforcing horizontal rod 3 and the arc frame positioning rod 4 are made of Q355B grade low alloy high strength structural steel with a yield strength ≥355MPa, which meets the load-bearing requirements;

[0042] The connecting parts, such as the fixed sleeve 9 and the internal threaded sleeve 10, are made of 45# steel and are heat-treated to improve wear resistance and strength.

[0043] Bolts and nuts (such as the nuts that come with the 20-type locking rod) are made of grade 8.8 high-strength bolts to ensure reliable connection.

[0044] When connecting the bottom ring 16 to the top of the vertical support rod 1, the bolt specification is M20, the spacing is ≤200mm, and the bolt holes need to be fitted with flat washers and spring washers to prevent loosening;

[0045] The locking rod 20 and the limiting locking block 19 are fitted by an interference fit. The diameter of the locking rod is 0.5mm smaller than the diameter of the limiting locking block hole to ensure a tight fit after insertion.

[0046] The thread fit accuracy between the internal threaded sleeve 10 and the fixed sleeve 9 is 6g / 6H, and the thread length is not less than 1.5 times the diameter of the reinforcing crossbar 3 to ensure connection strength.

[0047] During installation, first fix the vertical support rod 1, and then calibrate the verticality using a level.

[0048] When installing the reinforcing crossbar 3, first tighten the internal threaded sleeve 10, then insert the positioning rod 11 into the positioning hole 7, and finally rotate the docking ring 12 to align with the docking hole 13.

[0049] When the arc-shaped support rod 2 is connected to the vertical support rod 1, the bolt preload must reach 70% of the design value, and then be tightened to 100% after all components are installed.

[0050] The working principle of this assembled steel space frame structure will be explained in detail below.

[0051] like Figure 1-5 As shown, this assembled steel space frame structure adopts a modular design and achieves rapid installation through methods such as plug-in, threaded connection, and snap-fit. The specific installation steps and working principle are as follows:

[0052] Vertical support rod positioning and initial fixing: First, determine the installation position of vertical support rod 1, and perform positioning calibration according to design requirements to ensure that its verticality meets the standards. As the vertical support foundation of the entire structure, the accurate positioning of vertical support rod 1 is a prerequisite for the installation of subsequent components.

[0053] Installation of the reinforcing crossbar: Insert the fixing sleeve 9 into the second insertion hole 6 on the outer wall of the vertical support rod 1. The fixing sleeve 9 serves as a transition connecting the reinforcing crossbar 3 and the vertical support rod 1. Next, insert one end of the reinforcing crossbar 3 into the inner wall of the fixing sleeve 9. Then, put the internal threaded sleeve 10 on the outer wall of the reinforcing crossbar 3 and move it along the reinforcing crossbar 3 so that the inner wall of the internal threaded sleeve 10 is threadedly connected to the outer wall of the fixing sleeve 9 near one end. By rotating the internal threaded sleeve 10, the tightening force of the thread is used to initially fix the reinforcing crossbar 3 and the vertical support rod 1. To further enhance the fixing effect, insert the positioning rod 11 at the outer wall of the fixing sleeve 9 away from the internal threaded sleeve 10 into the positioning insertion hole 7 of the vertical support rod 1. At the same time, rotate the mating ring 12 on the outer wall of the internal threaded sleeve 10 so that the mating hole 13 on one side of the mating ring 12 mates with and inserts the positioning rod 11, forming a double limit to prevent the reinforcing crossbar 3 from loosening and ensure the stability of the lateral connection.

[0054] Installation of the curved support rod: Insert the bottom rod 14 of the curved support rod 2 into the receiving groove 15 at the top of the vertical support rod 1 to complete the initial positioning. Then, use bolts to pass through the bottom ring 16 at the bottom of the curved support rod 2 to detachably fix it to the top of the vertical support rod 1, so that the curved support rod 2 and the vertical support rod 1 are firmly connected to form the curved support part of the structure.

[0055] Installation of the arc frame positioning rod: Insert the slot 18 on the bottom surface of the arc frame positioning rod 4 into the receiving groove 17 on the top surface of the arc-shaped support rod 2, so that the arc frame positioning rod 4 is engaged with the top of the arc-shaped support rod 2. At this time, the limiting block 19 on the bottom surface of the arc frame positioning rod 4 will be located below the outer wall of the arc-shaped support rod 2. Then, insert the locking rod 20 through the limiting block 19, and tighten the nut on the outer wall near one end of the locking rod 20. The tightening force of the nut provides secondary fixation to the arc-shaped support rod 2, enhancing the load-bearing capacity and stability of the top of the arc-shaped support rod 2.

[0056] Overall structural inspection and commissioning: After completing the above installation steps, conduct a comprehensive inspection of the entire steel space frame structure to confirm that all components are tightly connected and there are no loose or misaligned parts. If necessary, fine-tune or re-tighten the connections to ensure the overall stability and safety of the structure, enabling it to effectively withstand the design load and meet the requirements of the project.

[0057] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An assembled steel space frame structure, comprising vertical support rods (1), characterized in that: An arc-shaped support rod (2) is movably inserted into the top of the vertical support rod (1). The outer wall of the vertical support rod (1) is provided with a first insertion hole (5) and a second insertion hole (6). A reinforcing crossbar (3) is movably inserted into the inner wall of the second insertion hole (6). One end of the reinforcing crossbar (3) is detachably fixedly connected to the vertical support rod (1) through a crossbar locking assembly (8). The crossbar locking assembly (8) includes a fixed cylinder (9), which is movably inserted into the second insertion hole (6). One end of the reinforcing crossbar (3) is movably inserted into the inner wall of the fixed cylinder (9). An internally threaded sleeve (10) is movably sleeved on the outer wall of the reinforcing crossbar (3). The inner wall of the internally threaded sleeve (10) is threadedly connected to the outer wall of the fixed cylinder (9) near one end. The top of the arc-shaped support rod (2) is provided with a receiving groove (17), and the inner wall of the receiving groove (17) is fitted with an arc frame positioning rod (4).

2. The assembled steel space frame structure according to claim 1, characterized in that: The outer wall of the vertical support rod (1) is provided with a positioning insertion hole (7), and a positioning rod (11) is movably inserted into the inner wall of the positioning insertion hole (7). One end of the positioning rod (11) is fixedly connected to the outer wall of the fixed cylinder (9) away from the internal threaded sleeve (10). The outer wall of the internal threaded sleeve (10) is rotatably connected with a docking ring (12), and one side of the docking ring (12) is provided with a docking hole (13) that docks with the positioning rod (11).

3. The assembled steel space frame structure according to claim 2, characterized in that: One end of the positioning rod (11) is movably inserted into the inner wall of the docking hole (13).

4. The assembled steel space frame structure according to claim 1, characterized in that: The bottom surface of the arc frame positioning rod (4) is provided with a slot (18) that mates with the receiving groove (17), and the receiving groove (17) and the slot (18) are movably connected to each other.

5. The assembled steel space frame structure according to claim 1, characterized in that: The bottom surface of the arc frame positioning rod (4) is fixedly connected to a limiting block (19). The inner wall of the limiting block (19) is movably engaged with the outer wall of the arc-shaped support rod (2). A locking rod (20) that movably passes through the limiting block (19) is provided below the arc frame positioning rod (4). A nut is threadedly connected to the outer wall of the locking rod (20) near one end.

6. The assembled steel space frame structure according to claim 1, characterized in that: The bottom end of the arc-shaped support rod (2) is fixedly connected to a bottom rod (14), and the top end of the vertical support rod (1) is provided with a receiving groove (15). The bottom end of the bottom rod (14) is movably inserted into the inner wall of the receiving groove (15).

7. The assembled steel space frame structure according to claim 1, characterized in that: The bottom end of the arc-shaped support rod (2) is fixedly connected to a bottom ring (16), which is detachably fixed to the top of the vertical support rod (1) by bolts.

Images