Large-span multi-curvature deformed steel truss structure

Abstract

The utility model discloses a large-span multi-curvature deformed steel truss structure which comprises a steel truss body, one side of the steel truss body is fixedly connected with a welding block, the other side of the steel truss body is provided with a welding hole, and one side of the steel truss body is provided with a reinforcing mechanism. Wherein the reinforcing mechanism comprises a through hole formed in the surface of the steel truss body, the through hole communicates with the welding hole, a positioning hole is formed in the surface of the welding block, a reinforcing block is connected to the inner wall of the through hole in a clamped mode, a movable frame is fixedly connected to one side of the reinforcing block, and a limiting assembly is arranged on one side of the steel truss body. The large-span multi-curvature special-shaped steel truss structure provided by the utility model is simple and practical, and effectively solves the problem that the joint is prone to fatigue cracking due to the fact that a welding seam exists at the joint of an assembled steel truss and is easily influenced by stress.

Description

Technical Field

[0001] The utility model relates to the technical field of steel truss structures, and particularly relates to a large-span multi-curvature special-shaped steel truss structure. Background Art

[0002] At present, the large-span multi-curvature special-shaped steel truss structure combines the characteristics of the steel truss structure and the multi-curvature special-shaped bridge. This structure is usually composed of multiple steel trusses, and each steel truss has a specific shape and curvature to adapt to the specific span and shape requirements of the bridge. These steel trusses are connected together through nodes to form a stable structural system that can bear the weight and load of the bridge.

[0003] In the Chinese patent "A large-span multi-curvature special-shaped steel truss structure" with the authorization announcement number "CN 220117592U", by providing welding grooves and welding bumps, during the assembly of the steel trusses, it is convenient to assemble and connect with adjacent steel trusses through the welding grooves and welding bumps, increasing the contact area of the weld seam and improving the stability of the welded connection, and further improving the stability of the steel truss.

[0004] Since there are weld seams at the welded joints of the assembled steel trusses, when the bridge is subjected to external loads or internal deformations, the steel truss structure will be stressed, and the joints of the assembled steel trusses are more likely to be affected by the stress, resulting in fatigue cracking problems at the joints of the assembled steel trusses.

[0005] Therefore, a large-span multi-curvature special-shaped steel truss structure is proposed to solve the above problems. Summary of the Utility Model

[0006] Aiming at the technical problems existing in the background art, the utility model provides a large-span multi-curvature special-shaped steel truss structure, which improves the problem that the weld seams exist at the joints of the assembled steel trusses and are easily affected by stress, resulting in fatigue cracking at the joints.

[0007] The technical solution for the utility model to solve the technical problems is specifically as follows:

[0008] A large-span multi-curvature special-shaped steel truss structure of the utility model includes: a steel truss body, one side of the steel truss body is fixedly connected with a welding block, a welding hole is opened on the other side of the steel truss body, and a reinforcement mechanism is arranged on one side of the steel truss body; wherein, the reinforcement mechanism includes a through hole opened on the surface of the steel truss body, the through hole is communicated with the welding hole, a positioning hole is opened on the surface of the welding block, a reinforcement block is clamped on the inner wall of the through hole, a movable frame is fixedly connected to one side of the reinforcement block, and a limiting component is arranged on one side of the steel truss body.

[0009] Preferably, the limiting component includes a support plate fixedly connected to the inner side of the steel truss body. A lead screw is rotatably connected to the inner wall of the support plate. A movable rod is threadedly connected to the surface of the lead screw. The bottom end of the movable rod is fixedly connected to the top of the movable frame. The top end of the lead screw is fixedly connected to a movable disc. Through the mutual cooperation of the movable disc, the lead screw, the movable rod and the movable frame, the reinforcing blocks are sequentially clamped in the through holes and the positioning holes, improving the stability of the welded joint of the two steel trusses and avoiding the problem of fatigue cracking at the joint of the steel trusses under the influence of stress.

[0010] Preferably, a telescopic cylinder is fixedly connected to the top of the support plate. A telescopic rod is slidably connected to the inner wall of the telescopic cylinder. One end of the telescopic rod is fixedly connected to a limiting rod. The surface of the limiting rod is clamped in the inner wall of the movable disc. One end of the telescopic cylinder is fixedly connected to a spring. The other end of the spring is fixedly connected to one end of the telescopic rod. The elastic force of the spring pushes the telescopic rod and the limiting rod to move, so that the limiting rod is clamped into the movable disc, thereby locking the movable disc and ensuring the stability of the reinforcing block clamped into the joint of the steel truss.

[0011] Preferably, magnetic grooves are formed on the surface of the limiting rod, and magnetic blocks are fixedly connected to the surface of the movable disc. The inner wall of the magnetic groove is clamped to the surface of the magnetic block and the opposite poles attract each other. The magnetic groove is adsorbed in the magnetic block, making the clamping of the limiting rod to the movable disc more stable, making the clamping of the reinforcing block to the joint of the steel truss more stable, and improving the reinforcing effect of the reinforcing block on the joint of the steel truss.

[0012] Preferably, anti-slip grooves are formed on both sides of the reinforcing block, and the inner wall of the anti-slip groove is clamped to the inner wall of the through hole. The anti-slip groove is used to increase the friction between the reinforcing block and the through hole and the positioning hole, ensuring the stability of the clamping of the reinforcing block into the through hole and the positioning hole.

[0013] Preferably, a protective cylinder is fixedly connected to the bottom of the support plate. The surface of the lead screw is rotatably connected to the inner wall of the protective cylinder. The surface of the movable rod is slidably connected to the inner wall of the protective cylinder. A guide rod is fixedly connected to the inner wall of the protective cylinder. The inner wall of the movable rod is slidably connected to the surface of the guide rod. The protective cylinder is used to block rainwater or dust from adhering to the surface of the lead screw, reducing the risk of corrosion of the lead screw and ensuring the service life of the lead screw.

[0014] Compared with the prior art, the large-span multi-curvature special-shaped steel truss structure of the present invention has the following beneficial effects:

[0015] 1. The utility model drives four reinforcing blocks to move downward simultaneously through a movable disc, a lead screw, a movable rod and a movable frame, so that the reinforcing blocks are sequentially clamped into through holes and positioning holes, thereby further reinforcing the welding block and the welding hole, improving the stability of the welded joint of two steel trusses, avoiding the problem of fatigue cracking at the steel truss joint under the influence of stress, and ensuring the stability of the large-span multi-curvature special-shaped steel truss structure;

[0016] 2. The utility model pushes the telescopic rod and the limiting rod to move through the elastic force of the spring, so that the limiting rod is clamped into the movable disc, the magnetic groove is clamped into the magnetic block, making the clamping of the limiting rod into the movable disc more stable, and making the reinforcing block more stably clamped into the welded joint of the steel truss, improving the reinforcing effect of the reinforcing block on the steel truss joint. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 is an exploded view of the steel truss body and the reinforcing mechanism of the utility model;

[0019] Figure 3 is a cross-sectional view of the reinforcing mechanism of the utility model;

[0020] Figure 4 is Figure 3 an enlarged view of A in

[0021] In the figure: 1. Steel truss body; 2. Welding block; 3. Welding hole; 4. Reinforcing mechanism; 401. Through hole; 402. Positioning hole; 403. Reinforcing block; 404. Movable frame; 405. Limiting component; 4051. Support plate; 4052. Lead screw; 4053. Movable disc; 4054. Telescopic cylinder; 4055. Telescopic rod; 4056. Limiting rod; 4057. Spring; 4058. Magnetic groove; 4059. Magnetic block; 40510. Protective cylinder; 40511. Movable rod; 40512. Guide rod; 40513. Anti-slip groove. Detailed Embodiment

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning understood by those of ordinary skill in the art in the field to which this disclosure belongs. The "upper", "lower", "left", "right", "front", "rear", etc. used in the specification and claims of this patent application of the present disclosure are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly; "connection" or "coupling" and other similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Those parts not detailed in the present utility model are all well-known techniques in the technical field of the present invention.

[0023] As Figures 1-4 shown, a large-span multi-curvature special-shaped steel truss structure of the present utility model includes: a steel truss body 1, a welding block 2 is fixedly connected to one side of the steel truss body 1, a welding hole 3 adapted to the welding block 2 is opened on the other side of the steel truss body 1, and a reinforcement mechanism 4 is arranged on one side of the steel truss body 1; wherein, the reinforcement mechanism 4 includes a through hole 401 opened on the surface of the steel truss body 1, the through hole 401 is communicated with the welding hole 3, a positioning hole 402 is opened on the surface of the welding block 2, a reinforcement block 403 is clamped on the inner wall of the through hole 401, a movable frame 404 is fixedly connected to one side of the reinforcement block 403, and a limiting component 405 is arranged on one side of the steel truss body 1.

[0024] As Figures 2-4As shown in the figure, the limit component 405 includes a support plate 4051 fixedly connected to the inner side of the steel truss body 1. The inner wall of the support plate 4051 is rotatably connected to a lead screw 4052. A movable rod 40511 is threadedly connected to the surface of the lead screw 4052. The bottom end of the movable rod 40511 is fixedly connected to the top of the movable frame 404. The top end of the lead screw 4052 is fixedly connected to a movable disc 4053. A telescopic cylinder 4054 is fixedly connected to the top of the support plate 4051. A telescopic rod 4055 is slidably connected to the inner wall of the telescopic cylinder 4054. One end of the telescopic rod 4055 is fixedly connected to a limit rod 4056. The surface of the limit rod 4056 is clamped to the inner wall of the movable disc 4053. One end of the telescopic cylinder 4054 is fixedly connected to a spring 4057. The other end of the spring 4057 is fixedly connected to one end of the telescopic rod 4055. A magnetic groove 4058 is formed on the surface of the limit rod 4056. A magnetic block 4059 is fixedly connected to the surface of the movable disc 4053. The inner wall of the magnetic groove 4058 is clamped to the surface of the magnetic block 4059 and the opposite poles attract each other. Anti-slip grooves 40513 are formed on both sides of the reinforcement block 403. The inner wall of the anti-slip groove 40513 is clamped to the inner wall of the through hole 401;

[0025] After the two steel truss bodies 1 are welded, rotate the movable disc 4053. The rotation of the movable disc 4053 drives the rotation of the lead screw 4052. The rotation of the lead screw 4052 drives the simultaneous downward movement of the movable rod 40511 and the movable frame 404. The downward movement of the movable frame 404 drives the downward movement of the reinforcement block 403, so that the reinforcement block 403 is sequentially clamped into the through hole 401 and the positioning hole 402, thereby further reinforcing the welding block 2 and the welding hole 3, improving the stability of the welded joint of the two steel trusses, and avoiding the problem of fatigue cracking at the connection of the steel trusses under the influence of stress. The elastic force of the spring 4057 pushes the telescopic rod 4055 and the limit rod 4056 to move, so that the limit rod 4056 is clamped into the movable disc 4053, the magnetic groove 4058 is clamped into the magnetic block 4059, making the clamping of the limit rod 4056 to the movable disc 4053 more stable, and making the reinforcement block 403 more stably clamped into the welding block 2 and the welding hole 3, improving the reinforcement effect of the reinforcement block 403 on the connection of the steel trusses and ensuring the stability of the large-span multi-curvature special-shaped steel truss structure.

[0026] As Figure 3 shown, a protective cylinder 40510 is fixedly connected to the bottom of the support plate 4051. The surface of the lead screw 4052 is rotatably connected to the inner wall of the protective cylinder 40510. The surface of the movable rod 40511 is slidably connected to the inner wall of the protective cylinder 40510. A guide rod 40512 is fixedly connected to the inner wall of the protective cylinder 40510. The inner wall of the movable rod 40511 is slidably connected to the surface of the guide rod 40512. The protective cylinder 40510 is used to prevent rainwater or dust from adhering to the surface of the lead screw 4052, reducing the risk of corrosion of the lead screw 4052 and ensuring the service life of the lead screw 4052.

[0027] When the utility model is in use, after two steel truss bodies 1 are welded, the movable disk 4053, the lead screw 4052, the movable rod 40511 and the movable frame 404 drive the four reinforcing blocks 403 to move downward simultaneously, so that the reinforcing blocks 403 are sequentially clamped into the through holes 401 and the positioning holes 402, thereby further reinforcing the welding block 2 and the welding hole 3, improving the stability of the welded joint of the two steel trusses, and avoiding the problem of fatigue cracking at the steel truss joint under the influence of stress. The elastic force of the spring 4057 pushes the telescopic rod 4055 and the limiting rod 4056 to move, so that the limiting rod 4056 is clamped into the movable disk 4053, the magnetic groove 4058 is clamped into the magnetic block 4059, making the clamping of the limiting rod 4056 into the movable disk 4053 more stable, and making the reinforcing block 403 more stably clamped into the welding block 2 and the welding hole 3, improving the reinforcing effect of the reinforcing block 403 on the steel truss joint and ensuring the stability of the large-span multi-curvature special-shaped steel truss structure.

Claims

1. A large-span multi-curvature special-shaped steel truss structure, comprising: A steel truss body, one side of the steel truss body is fixedly connected with a welding block, the other side of the steel truss body is provided with a welding hole, and one side of the steel truss body is provided with a reinforcement mechanism; wherein the reinforcement mechanism includes a through hole provided on the surface of the steel truss body, the through hole is connected with the welding hole, a positioning hole is provided on the surface of the welding block, the inner wall of the through hole is clamped with a reinforcement block, one side of the reinforcement block is fixedly connected with a movable frame, and one side of the steel truss body is provided with a limiting component.

2. The large-span multi-curvature special-shaped steel truss structure according to claim 1, characterized in that: The limit assembly includes a support plate fixedly connected to the inner side of the steel truss body, the inner wall of the support plate is rotatably connected to a screw rod, the surface of the screw rod is threadedly connected to a movable rod, the bottom end of the movable rod is fixedly connected to the movable frame, and the top end of the screw rod is fixedly connected to a movable disk; the top of the support plate is fixedly connected to a telescopic cylinder, the inner wall of the telescopic cylinder is slidably connected to the telescopic rod, one end of the telescopic rod is fixedly connected to a limit rod, the surface of the limit rod is clamped on the inner wall of the movable disk, one end of the telescopic cylinder is fixedly connected to a spring, and the other end of the spring is fixedly connected to one end of the telescopic rod.

3. The large-span multi-curvature special-shaped steel truss structure according to claim 2, characterized in that: A magnetic groove is provided on the surface of the limiting rod, a magnetic block is fixedly connected to the surface of the movable disk, and the inner wall of the magnetic groove is clamped on the surface of the magnetic block and opposite poles attract each other.

4. The large-span multi-curvature special-shaped steel truss structure according to claim 2, characterized in that: The bottom of the support plate is fixedly connected to a protective tube, the surface of the screw rod is rotatably connected to the inner wall of the protective tube, the surface of the movable rod is slidably connected to the inner wall of the protective tube, the inner wall of the protective tube is fixedly connected to a guide rod, and the inner wall of the movable rod is slidably connected to the surface of the guide rod.

5. The large-span multi-curvature special-shaped steel truss structure according to claim 1, characterized in that: Anti-skid grooves are provided on both sides of the reinforcement block, and the inner walls of the anti-skid grooves are clamped with the inner walls of the through holes.

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