Large-span arc-shaped steel structure

Abstract

The present application relates to the technical field of steel structure, and discloses a large-span arc-shaped steel structure, which comprises a cross frame, the bottom of the two ends of the cross frame is fixed with a vertical frame, and the top of the two ends of the cross frame is movably connected with an arc-shaped frame;The cross frame is provided with left-right symmetrical supporting bracket assemblies, the supporting bracket assemblies comprise driving supports and driven supports, the top of the driving supports and the driven supports is connected with first and second follow-up slides on the arc-shaped frame respectively;The middle column is slidably connected between the two groups of driving supports.The supporting bracket assemblies formed by the arc-shaped frame, the cross frame, the driving supports and the driven supports form initial linkage cooperation, then the middle column is locked, and the assembly is completed by linkage, without a large number of bolts and special equipment, the difficulty of alignment is reduced, and the assembly efficiency is improved.Multiple groups of triangular structures support the arc-shaped frame, form a firm whole, enhance the firmness, effectively prevent the deviation and shaking, and enhance the anti-overturning and anti-deformation capacity.

Description

Technical Field

[0001] This invention relates to the field of steel structure technology, specifically to a large-span arc-shaped steel structure. Background Technology

[0002] Existing large-span curved steel structures are cumbersome to assemble, relying heavily on bolts for splicing, resulting in difficult alignment and low assembly efficiency. Furthermore, the assembled structure lacks stability; the connections between the large-span curved structure and its components are loose, making it prone to horizontal shifting and vertical swaying. It also lacks reliable self-locking structures, leading to weak overturning resistance. In addition, it is difficult to form multiple stable load-bearing structures for supporting large-span curved structures, failing to meet the load-bearing and deformation resistance requirements of such structures. Therefore, we propose a new large-span curved steel structure. Summary of the Invention

[0003] The purpose of this invention is to provide a large-span curved steel structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A large-span arc-shaped steel structure includes a crossbeam, with uprights fixed at the bottom of both ends of the crossbeam and arc-shaped frames movably connected to the top of both ends of the crossbeam. The cross frame is provided with symmetrically distributed abutment support assemblies. The abutment support assembly includes an active support and a driven support. The tops of the active support and the driven support are respectively connected to a first follower slide and a second follower slide that slide on the arc frame. A central column slides between the two sets of active supports on the left and right. The upper end of the central column is snapped into the top between the two sets of arc-shaped frames on the left and right. When the central column is connected and locked to the horizontal frame downwards, the two sets of arc-shaped frames on the left and right gradually move closer together, and the active support will drive the driven support to rotate synchronously until the bottom of the active support is snapped into the frame, thereby achieving the locking and fixing of the arc-shaped frame, the central column, the abutment support assembly and the frame.

[0005] Preferably, the top of the upright frame is provided with a limiting slot for engaging the bottom of the horizontal frame, and the bottom of both ends of the horizontal frame are provided with insertion posts, which are inserted into the insertion holes at the bottom of the limiting slot.

[0006] Preferably, the top of both ends of the cross frame is provided with connecting ears, and the bottom of the arc-shaped frame is movably connected to the connecting ears by a pin.

[0007] Preferably, the cross frame has symmetrical pivots running through it, and the two ends of the pivots extend out of the cross frame and are fixed with limit seats. The active support includes a U-shaped frame, a buckle seat fixed at the bottom of the U-shaped frame by an extension plate, a sliding column provided on the inner side of the top of the U-shaped frame, and an inverted V-shaped frame provided at the upper end of the U-shaped frame. The top two sides of the U-shaped frame extend through the limiting slots on the limiting seats; The crossbeam is provided with symmetrical through slots on the left and right sides. The driven bracket is movably connected to the through slot by a pin, and the bottom of the driven bracket abuts against the upper surface of the bottom of the U-shaped frame.

[0008] Preferably, the upright frame is provided with an L-shaped slot, and the buckle seat is snapped into the L-shaped slot.

[0009] Preferably, the lower end of the arc-shaped frame is provided with a T-shaped groove for sliding the first follower slide and the second follower slide; The bottom of the first follower slide is located between two sets of inverted V-shaped frames, and the first slide rod fixed at the bottom of the first follower slide slides into the first slide groove on the inverted V-shaped frame; The bottom of the second follower slide is located in the U-shaped clearance groove at the top of the driven bracket, and the second slide rod fixed at the bottom of the second follower slide slides into the second slide groove on the side wall of the U-shaped clearance groove.

[0010] Preferably, the bottom surface of the intermediate column is provided with an inverted U-shaped groove, and the sliding column slides into the corresponding inverted U-shaped groove; The top of the central column is provided with an arc-shaped bracket, and the upper surface of the top of the arc-shaped frame is provided with an arc-shaped slot. The arc-shaped bracket is inserted into the corresponding arc-shaped slot.

[0011] Preferably, a screw is provided at the center of the bottom of the intermediate column, and the screw extends through the crossbeam and is locked in place by a nut.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the present invention forms an initial linkage by using an abutment bracket assembly composed of an arc frame, a cross frame, an active bracket and a driven bracket. Subsequently, the assembly can be completed by locking the middle column, without the need for a large number of bolts and special equipment, reducing the difficulty of alignment and improving the assembly efficiency.

[0013] The multiple triangular structures of this invention provide support for the arc-shaped frame while simultaneously forming a solid whole from the arc-shaped frame, crossbar, central column, uprights, and abutment support assembly, thereby enhancing stability, effectively preventing shifting and swaying, and improving resistance to overturning and deformation. Attached Figure Description

[0014] Figure 1 This is an exploded structural diagram of the overall assembly of the present invention; Figure 2 This is a schematic diagram of the structure of the support frame of the present invention; Figure 3 This is an exploded structural diagram of the assembly of the cross frame, rotating shaft, and limiting seat of the present invention; Figure 4 This is a schematic diagram of the structure of the active support of the present invention; Figure 5 This is a schematic diagram of the driven support structure of the present invention; Figure 6 This is a schematic diagram of the assembly of the active support, the driven support, and the crossbeam of the present invention. Figure 7 This is an exploded structural diagram of the assembly of the arc-shaped frame, the first follower slide, and the second follower slide of the present invention; Figure 8 This is a schematic diagram of the structure of the central column of the present invention; Figure 9 This is a schematic diagram of the pre-installation structure of the arc-shaped frame, cross frame, and abutment support assembly of the present invention; Figure 10 This is a schematic diagram of the structure of the present invention as the middle column gradually approaches the cross frame; Figure 11 This is a schematic diagram of the three-dimensional structure of the entire assembly of the present invention.

[0015] In the diagram: 1. Upright frame; 101. L-shaped slot; 102. Limiting slot; 103. Insertion hole; 2. Horizontal frame; 201. Through slot; 203. Insertion post; 204. Connecting lug; 205. Rotating shaft; 206. Limiting seat; 207. Limiting through slot; 208. Pin; 209. Pin; 3. Nut; 4. Active bracket; 401. U-shaped frame; 402. Extension plate; 403. Buckle seat; 404. Inverted V-shaped frame; 405, first slide groove; 406, sliding column; 5, driven bracket; 501, U-shaped clearance groove; 502, second slide groove; 6, screw; 7, arc-shaped frame; 701, arc-shaped slot; 702, T-shaped slide groove; 703, first follower slide; 704, first slide rod; 705, second follower slide; 706, second slide rod; 8, intermediate column; 801, arc-shaped slot; 802, inverted U-shaped slide groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example: Please see Figures 1-11 The present invention provides a technical solution: A large-span arc-shaped steel structure includes a crossbeam 2, with uprights 1 fixed at both ends of the crossbeam 2. The top of the uprights 1 is provided with a limiting slot 102 for engaging the bottom of the crossbeam 2. The bottom of both ends of the crossbeam 2 is provided with insertion posts 203. The insertion posts 203 are inserted into the insertion holes 103 at the bottom of the limiting slots 102. The limiting slots 102, insertion holes 103, and insertion posts 203 are inserted into the insertion holes 103 of the limiting slots 102 to achieve positioning and engagement. The limiting slots 102 form a wrapping and limiting effect on the ends of the crossbeam 2, which not only enables rapid alignment and pre-assembly but also restricts the horizontal offset and vertical sway of the crossbeam 2, improving the overall basic assembly accuracy and support stability.

[0018] The top of both ends of the horizontal frame 2 is movably connected to the arc-shaped frame 7; the top of both ends of the horizontal frame 2 is provided with connecting ears 204, and the bottom of the arc-shaped frame 7 is movably connected to the connecting ears 204 by pins 209. This gives the arc-shaped frame 7 the freedom to rotate and open, adapting to subsequent folding and assembly actions. At the same time, the hinged structure has strong load-bearing capacity and can withstand the vertical and lateral loads of the large-span arc-shaped frame 7.

[0019] The crossbeam 2 is provided with symmetrically distributed abutment bracket assemblies, which include an active bracket 4 and a driven bracket 5. A rotating shaft 205 is symmetrically passed through the crossbeam 2, and the two ends of the rotating shaft 205 extend out of the crossbeam 2 and are fixed with a limiting seat 206. The active bracket 4 includes a U-shaped frame 401, a buckle seat 403 fixed at the bottom of the U-shaped frame 401 by an extension plate 402, a sliding column 406 provided on the inner side of the top of the U-shaped frame 401, and an inverted V-shaped frame 404 provided at the upper end of the U-shaped frame 401. The two sides of the top of the U-shaped frame 401 extend through the limiting through groove 207 on the limiting seat 206. The crossbeam 2 is provided with symmetrically distributed through grooves 201, and the driven bracket 5 is movably connected to the through grooves 201 by a pin 208, and the bottom of the driven bracket 5 abuts against the upper surface of the bottom of the U-shaped frame 401.

[0020] The U-shaped frame 401 passes through the limiting seat 206 via the limiting slot 207, and the rotating shaft 205 and the limiting seat 207 form a lateral limiting constraint. This ensures that the active support 4 can rotate and move downward smoothly, while preventing the active support 4 from deviating and falling out, thus ensuring the accuracy of the transmission motion trajectory.

[0021] The tops of the active support 4 and the driven support 5 are respectively connected to the first follower slide 703 and the second follower slide 705 that slide on the arc frame 7. The lower end of the arc frame 7 is provided with a T-shaped slide groove 702 for sliding the first follower slide 703 and the second follower slide 705. The T-shaped slide groove 702 forms an embedded sliding limit for the first follower slide 703 and the second follower slide 705, preventing the first follower slide 703 and the second follower slide 705 from disengaging from the slide groove. At the same time, it ensures that the first follower slide 703 and the second follower slide 705 can slide smoothly along the arc of the arc frame 7, adapting to the displacement changes of the arc frame 7 as it rotates and retracts.

[0022] The bottom of the first follower slide 703 is located between the two sets of inverted V-shaped frames 404, and the first slide rod 704 fixed at the bottom of the first follower slide 703 slides into the first slide groove 405 on the inverted V-shaped frame 404; the bottom of the second follower slide 705 is located in the U-shaped clearance groove 501 at the top of the driven bracket 5, and the second slide rod 706 fixed at the bottom of the second follower slide 705 slides into the second slide groove 502 on the side wall of the U-shaped clearance groove 501.

[0023] A central column 8 is slidably connected between the two sets of active supports 4 on the left and right sides. The bottom surface of the central column 8 is provided with an inverted U-shaped groove 802. The sliding column 406 slides into the corresponding inverted U-shaped groove 802. The upper end of the central column 8 is snapped into the top between the two sets of arc-shaped frames 7 on the left and right sides. The top of the central column 8 is provided with an arc-shaped retaining seat 801. The upper surface of the top of the arc-shaped frame 7 is provided with an arc-shaped groove 701. The arc-shaped retaining seat 801 is snapped into the corresponding arc-shaped groove 701. When the central column 8 is connected and locked downwards to the horizontal frame 2, the two sets of arc-shaped frames 7 on the left and right sides gradually move closer together, and the active support 4 will synchronously drive the driven support 5 to rotate until the bottom of the active support 4 is snapped into the upright frame 1, thereby realizing the locking and fixing of the arc-shaped frame 7, the central column 8, the abutment support assembly and the upright frame 1.

[0024] The upright frame 1 is provided with an L-shaped slot 101, and the buckle seat 403 is buckled in the L-shaped slot 101. The L-shaped slot 101, the buckle seat 403, and the extension plate 402 are fixed to the bottom of the U-shaped frame 401 through the extension plate 402, and finally buckled in the L-shaped slot 101 to form a mechanical self-locking structure. The L-shaped slot 101 can restrict the vertical and horizontal bidirectional displacement of the buckle seat 403, so that the bottom of the active support 4, the cross frame 2 and the upright frame 1 form a stable triangle. No additional bolts are required for reinforcement, the anti-loosening ability is strong, and the overall structure's anti-overturning performance is improved. The bottom of the middle column 8 is provided with a screw 6, which extends through the cross frame 2 and is locked with a nut 3.

[0025] Specifically, when using it: This large-span arc-shaped steel structure is assembled from core components such as uprights 1, horizontal frames 2, nuts 3, active supports 4, driven supports 5, screws 6, arc-shaped frames 7, and intermediate columns 8. The whole structure adopts a linkage plug-in, sliding follow-up, and snap-locking assembly and locking method to achieve rapid assembly and stable fixing of the large-span arc-shaped structure.

[0026] During assembly, first align the bottom insertion pins 203 at both ends of the horizontal frame 2 with the insertion holes 103 at the bottom of the top limiting slot 102 of the vertical frame 1 and insert them to complete the positioning and pre-assembly of the horizontal frame 2 and the vertical frame 1. The bottom of the arc frame 7 is then hinged to the connecting ears 204 at the top of both ends of the cross frame 2 via pins 209, so that the arc frame 7 can rotate slightly around the connecting ears 204 to open and close.

[0027] Abutment bracket assembly consisting of an active bracket 4 and a driven bracket 5 is symmetrically arranged on the horizontal frame 2. The active bracket 4 is installed through the limiting seat 206 and the limiting through groove 207 to achieve limiting and through installation with the horizontal frame 2. The driven bracket 5 is hinged in the through groove 201 of the horizontal frame 2 via the pin shaft 208, and the bottom of the driven bracket 5 abuts against and fits against the upper end face of the bottom of the U-shaped frame 401 of the active bracket 4, forming an initial linkage (such as...). Figure 9 (As shown).

[0028] The middle column 8 is set between the two sets of active supports 4 on the left and right. The sliding column 406 of the active support 4 slides into the inverted U-shaped sliding groove 802 at the bottom of the middle column 8 to achieve sliding adaptation. At the same time, the arc-shaped bracket 801 at the top of the central column 8 is initially aligned with the arc-shaped slots 701 at the top of the two sets of arc-shaped frames 7 (e.g., Figure 10 (As shown).

[0029] Under the action of its own weight, the middle column 8 moves downward, and the screw 6 gradually locks the matching nut 3 after passing through the cross frame 2. During the downward movement of the middle column 8, after the sliding column 406 slides to the top of the inverted U-shaped sliding groove 802, the middle column 8 pushes the left and right sets of active brackets 4 downward along the limiting through groove 207 of the limiting seat 206. At the same time, the active bracket 4 also rotates around the rotating shaft 205 as the center. The arc-shaped bracket 801 on the middle column 8 presses down on the arc-shaped frame 7, simultaneously driving the two sets of arc-shaped frames 7 to gradually close inward around the bottom pin 209.

[0030] During the retraction process of the arc frame 7, the first follower slide 703 and the second follower slide 705 in its T-shaped slide groove 702 are displaced synchronously with the arc frame 7. The first sliding rod 704 at the bottom of the first follower slide 703 slides and adapts along the first sliding groove 405 of the inverted V-shaped frame 404 of the active bracket 4, and the second sliding rod 706 at the bottom of the second follower slide 705 slides and follows along the second sliding groove 502 on the side wall of the U-shaped clearance groove 501 at the top of the driven bracket 5.

[0031] During the linkage rotation process, the buckle seat 403 connected to the bottom extension plate 402 of the active bracket 4 finally snaps into the L-shaped slot 101 of the upright frame 1, completing the buckle self-locking. At the same time, the arc-shaped bracket 801 at the top of the middle column 8 is fully inserted into the arc-shaped slot 701 at the top of the arc frame 7, and the first slide rod 704 slides to the bottom of the first slide groove 405, thus achieving all-round locking and fixing between the arc frame 7, the middle column 8, the support bracket assembly and the frame 1, and completing the overall forming and assembly of the large-span arc steel structure.

[0032] The driven support 5 and the active support 4 are connected to the cross frame 2, and the tops of the driven support 5 and the active support 4 are both supported on the inner wall of the arc frame 7, forming a stable support for the arc frame 7. A stable triangular structure is formed between the top of the driven support 5, the bottom of the arc frame 7, and the end of the cross frame 2. A stable triangular structure is formed between the bottom of the active support 4, the cross frame 2, and the upright frame 1. A stable triangular structure is formed between the top of the active support 4, the top of the arc frame 7, and the top of the middle column 8. A stable triangular structure is formed between the top of the active support 4, the bottom of the middle column 8, and the cross frame 2. This ensures the stability of the entire structure.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A long span curved steel structure comprising a cross-brace, characterised in that: The bottom of both ends of the cross frame is fixed with a vertical frame, and the top of both ends of the cross frame is movably connected with an arc-shaped frame; The cross frame is provided with symmetrically distributed abutment support assemblies. The abutment support assembly includes an active support and a driven support. The tops of the active support and the driven support are respectively connected to a first follower slide and a second follower slide that slide on the arc frame. A middle column slides between the two sets of active supports on the left and right. The upper end of the middle column is snapped into the top between the two sets of arc-shaped frames on the left and right. When the middle column is connected and locked to the horizontal frame downwards, the two sets of arc-shaped frames on the left and right gradually move closer together, and the active support will drive the driven support to rotate synchronously until the bottom of the active support is snapped into the frame, thereby achieving the locking and fixing of the arc-shaped frame, the middle column, the abutment support assembly and the frame. The cross frame has symmetrical pivots running through it from left to right, and the two ends of the pivots extend out of the cross frame and are fixed with limit seats. The active support includes a U-shaped frame, a buckle seat fixed at the bottom of the U-shaped frame by an extension plate, a sliding column provided on the inner side of the top of the U-shaped frame, and an inverted V-shaped frame provided at the upper end of the U-shaped frame. The top two sides of the U-shaped frame extend through the limiting slots on the limiting seats; The cross frame is provided with symmetrical through slots on the left and right sides. The driven bracket is movably connected to the through slot by a pin, and the bottom of the driven bracket abuts against the upper surface of the bottom of the U-shaped frame. The lower end of the arc-shaped frame is provided with a T-shaped groove for sliding the first follower slide and the second follower slide; The bottom of the first follower slide is located between two sets of inverted V-shaped frames, and the first slide rod fixed at the bottom of the first follower slide slides into the first slide groove on the inverted V-shaped frame; The bottom of the second follower slide is located in the U-shaped clearance groove at the top of the driven bracket, and the second slide rod fixed at the bottom of the second follower slide slides into the second slide groove on the side wall of the U-shaped clearance groove.

2. The large-span arc-shaped steel structure according to claim 1, characterized in that: The top of the upright frame is provided with a limiting slot for engaging the bottom of the horizontal frame, and the bottom of both ends of the horizontal frame are provided with insertion posts, which are inserted into the insertion holes at the bottom of the limiting slot.

3. The large-span arc-shaped steel structure according to claim 1, characterized in that: The top of both ends of the cross frame is provided with connecting ears, and the bottom of the arc-shaped frame is movably connected to the connecting ears with pins.

4. The large-span arc-shaped steel structure according to claim 1, characterized in that: The upright frame is provided with an L-shaped slot, and the buckle seat is snapped into the L-shaped slot.

5. The large-span arc-shaped steel structure according to claim 1, characterized in that: The bottom surface of the intermediate column is provided with an inverted U-shaped groove, and the sliding column slides into the corresponding inverted U-shaped groove; The top of the central column is provided with an arc-shaped bracket, and the upper surface of the top of the arc-shaped frame is provided with an arc-shaped slot. The arc-shaped bracket is inserted into the corresponding arc-shaped slot.

6. The large-span arc-shaped steel structure according to claim 1, characterized in that: The bottom of the central column is provided with a screw rod, which extends through the crossbeam and is then locked in place with a nut.

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