A type of long-span, high-load-bearing steel structure connector

Abstract

This utility model provides a large-span, high-load-bearing steel structure connector, effectively solving the problem that existing technologies can only guarantee the stability of steel structure connections for a short period of time, requiring frequent inspections later on, and failing to achieve the claimed long-term reinforcement effect. The technical solution includes a horizontal outer cylinder with inner cylinders at both ends. The inner cylinders do not rotate and are connected to the outer cylinder via a threaded structure. The inner wall of the inner cylinder has multiple axially oriented grooves, with small plates hinged within each groove. The end of the small plate furthest from the center of the outer cylinder is hinged into the groove, while the end closer to the center of the outer cylinder is inwardly pressed. A spring plate is installed between the small plate and the groove. This utility model has an ingenious structure that ensures stability at the connection points of the web members of the steel truss, provides additional reinforcement at the connection points, and seals the connection points to prevent corrosion and loosening, ensuring a stable and reliable connection between the web members.

Description

Technical Field

[0001] This utility model relates to the field of large-span dry steel structure connection technology, and in particular to a large-span, high-load-bearing steel structure connector. Background Technology

[0002] A steel truss is a truss structure made of steel, commonly used in construction and bridge engineering. Patent document CN222252518U discloses a large-span, high-load-bearing steel truss structure. This structure can reinforce the web members of the steel truss, improving its stiffness and effectively solving the stability problem at the joints. However, during the implementation of this patent, it was found that the web member joints are directly exposed to the external environment, making them prone to water accumulation, leading to corrosion and loosening, ultimately causing the connectors to fail. Therefore, this solution only ensures the stability of the steel structure connections for a short period, requiring frequent subsequent inspections and failing to achieve the claimed long-term reinforcement effect.

[0003] To address the aforementioned issues, a steel structure connector with a large span and high load-bearing capacity is proposed. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a large-span, high-load-bearing steel structure connector, which effectively solves the problem that the prior art can only ensure the stability of the steel structure connection for a short period of time, requires frequent testing in the later stage, and cannot achieve the claimed long-term reinforcement effect.

[0005] The technical solution includes a horizontal outer cylinder with inner cylinders at both ends. The inner cylinders do not rotate and are connected to the outer cylinder via a threaded structure. When the outer cylinder rotates, the threaded structure drives the two inner cylinders to move closer or further apart axially. The inner wall of the inner cylinder has multiple axially oriented grooves, and small plates are hinged in the grooves. The end of the small plate away from the center of the outer cylinder is hinged in the groove, and the end of the small plate closer to the center of the outer cylinder moves inward. A spring plate is installed between the small plate and the groove.

[0006] Preferably, the inner cylinder is fixed with wing plates, and multiple bolts pass through the two wing plates. Nuts are screwed onto the bolts, so that the two wing plates can only move along the axial direction of the inner cylinder, but cannot rotate relative to each other.

[0007] Preferably, the outer cylinder has an external protrusion in the middle, and the cross-section of the external protrusion has a polygonal structure.

[0008] Preferably, the bolt has multiple nuts.

[0009] This utility model has an ingenious structure that ensures the stability of the web member connection of the steel truss and provides additional reinforcement at the connection. At the same time, the connection is wrapped and sealed, which can prevent corrosion and loosening at the connection and ensure that the connection between the web members is firm and reliable. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0011] Figure 2 This is the front view of the present utility model.

[0012] Figure 3 This is the front sectional view of the present invention.

[0013] Figure 4 This is an exploded view of the present invention.

[0014] Figure 5 This is a diagram showing the state of the present invention during installation (at this time, the ends of the two web members are not yet in contact). Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Depend on Figures 1 to 5 The present invention includes a horizontal outer cylinder 1, with inner cylinders 2 at both ends of the outer cylinder 1. The inner cylinders 2 do not rotate and are connected to the outer cylinder 1 by a threaded structure. When the outer cylinder 1 rotates, the outer cylinder 1 can drive the two inner cylinders 2 to move closer or further apart along the axial direction through the threaded structure. There are multiple axially oriented grooves 3 on the inner side wall of the inner cylinder 2. Small plates 4 are hinged in the grooves 3. The end of the small plate 4 away from the center of the outer cylinder 1 is hinged in the groove 3, and the end of the small plate 4 near the center of the outer cylinder 1 moves inward. A spring plate 5 is installed between the small plate 4 and the groove 3.

[0017] In order to prevent the two inner cylinders 2 from rotating, wing plates 6 are fixed on the inner cylinders 2. Multiple bolts 7 pass through the two wing plates 6, and nuts 8 are screwed on the bolts 7, so that the two wing plates 6 can only move along the axial direction of the inner cylinder 2, but cannot rotate relative to each other.

[0018] To facilitate the screwing of the outer cylinder 1, an external protrusion 9 is provided in the middle of the outer cylinder 1, and the cross-section of the external protrusion 9 is polygonal.

[0019] To prevent loosening, the bolt 7 has multiple nuts 8.

[0020] It is worth noting that the ends of the web members of the steel truss originally have protrusions to increase the contact area between the ends of the two web members and to ensure the stability of the web member connection. Based on this, the ends of the web members can enter the middle of the entire structure from the outside through one end of the inner cylinder 2. However, due to the presence of the small plate 4, the web members cannot be pulled out in the opposite direction. Thus, the cooperation of multiple small plates 4 can make the two web members press tightly together; the threads on the two inner cylinders 2 turn in opposite directions.

[0021] In use, the two connecting rods are inserted from the outer ends of the inner cylinders 2 on both sides. The ends of the connecting rods force the wedge-shaped blocks into the grooves 3. When the ends of the connecting rods pass the small plate 4, the small plate 4 moves towards the center under the action of the spring plate 5. Figure 5 As shown, at this time, the small plate 4 is in contact with the outer circular surface of the web member; at this time, one hand holds the tool to pinch the screw so that the two inner cylinders 2 cannot rotate, and then the other hand screws the outer cylinder 1. The outer cylinder 1, through the threaded structure, brings the two inner cylinders 2 closer to each other, and the multiple small plates 4 press against the protrusions at the ends of the web members, so that the end faces of the two web members are further brought closer until they are tightly pressed. At this time, the nut 8 on the bolt 7 is screwed on. The bolt 7 and the nut 8 clamp the wing plate 6 between the two inner cylinders 2. At this time, the bolt 7, nut 8, and wing plate 6 can reduce the stress on the threaded structure on the outer cylinder 1, and also reinforce the connection.

[0022] Of course, to prevent rainwater intrusion, after installation, sealing rings or sealing materials can be installed at the outer ends of the two inner cylinders 2 to ensure a sealed connection and extend the service life of the connectors.

Claims

1. A large-span high-load-bearing steel structure connecting piece, characterized in that, It includes a horizontal outer cylinder (1), with inner cylinders (2) at both ends of the outer cylinder (1). The inner cylinders (2) do not rotate, and the inner cylinders (2) and the outer cylinder (1) are connected by a threaded structure. When the outer cylinder (1) rotates, the outer cylinder (1) can drive the two inner cylinders (2) to move closer or further away from each other along the axial direction through the threaded structure. There are multiple grooves (3) on the inner side wall of the inner cylinder (2) along the axial direction. A small plate (4) is hinged in the groove (3). The end of the small plate (4) away from the center of the outer cylinder (1) is hinged in the groove (3), and the end of the small plate (4) close to the center of the outer cylinder (1) moves inward. A spring plate (5) is installed between the small plate (4) and the groove (3).

2. The steel structure connecting piece of large span and high bearing capacity according to claim 1, characterized in that, The inner cylinder (2) is fixed with a wing plate (6), and the two wing plates (6) are connected by multiple bolts (7). Nuts (8) are screwed onto the bolts (7), so that the two wing plates (6) can only move along the axial direction of the inner cylinder (2), but they cannot rotate relative to each other.

3. The connecting piece of a long-span high-load-bearing steel structure according to claim 1 or 2, characterized in that, The outer cylinder (1) has an external protrusion (9) in the middle, and the cross-section of the external protrusion (9) is polygonal.

4. A large-span, high-load-bearing steel structure connector according to claim 2, characterized in that, There are multiple nuts (8) on the bolt (7).

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