A galvanized purl link member

Abstract

The utility model relates to the technical field of purline connection, concretely is a galvanized purline connecting piece, including two purline main parts, the top of two purline main parts end portion all has the connecting plate through screw thread connection, the middle part of two connecting plates all is equipped with the movable slot, the middle part rotation of one movable slot is installed with the occlusion board no.

Description

Technical Field

[0001] This utility model relates to the field of purlin connection technology, specifically a galvanized purlin connector. Background Technology

[0002] Galvanized purlins are transverse bending members with a galvanized surface. Also known as purlins or rafters, they are horizontal roof beams perpendicular to the roof trusses or rafters, used to support the rafters or roofing material. Purlins are transversely bending members, typically in two-way bending, and are generally designed as single-span simply supported purlins. Commonly used purlins are divided into solid-web and light steel truss types, widely used in light steel structure buildings and civil buildings.

[0003] Traditionally, adjacent purlins are typically connected solely by bolts, which has several shortcomings in practical applications. For example, it suffers from poor fatigue resistance. Bolted connections are localized stress points, and when the structure is subjected to repetitive loads, such as frequent mechanical vibrations in industrial plants, stress concentration can easily occur around the bolt holes, leading to fatigue fracture of the steel. Furthermore, traditional connection methods are mostly planar contacts, relying solely on planar contact and bolt friction. They cannot use geometric shapes to restrict relative movement of components, making them prone to plastic deformation under alternating loads, thus affecting structural stability. Utility Model Content

[0004] One of the technical problems that this application aims to solve is that the traditional connection between adjacent purlins is usually fixed by bolts, which has many shortcomings in practical use.

[0005] To solve the above-mentioned technical problems, this application provides a galvanized purlin connector, including two purlin bodies. A connecting plate is threadedly connected to the upper part of each end of the two purlin bodies via screws. A movable groove is formed in the middle of each connecting plate. A first interlocking plate is rotatably mounted in the middle of one of the movable grooves. A recessed groove is formed on one side of the first interlocking plate. A positioning groove is formed above the middle of the recessed groove. A rod is inserted through the upper end of the middle of one of the movable grooves. A limit block is fixedly mounted at one end of the rod. A second interlocking plate is rotatably mounted in the middle of the other movable groove. A protrusion is formed on one side of the second interlocking plate. A positioning groove is formed above the middle of the protrusion. A positioning block is fixedly mounted on one side of the inner wall of the other movable groove.

[0006] In some embodiments, screw holes are provided on both sides of the middle of both ends of the two purlin bodies, and the surface of the purlin bodies is coated with a galvanized coating.

[0007] In some embodiments, the lower ends of the two screw holes are respectively fixedly mounted with a first bottom fixing plate and a second bottom fixing plate by screws.

[0008] In some embodiments, slots are provided on both sides of the middle portion of one end of the bottom fixing plate, and a locking plate is fixedly installed on both sides of the middle portion of one end of the bottom fixing plate, the locking plate being engaged with the middle portion of the slot.

[0009] In some embodiments, the recessed groove of the first biting plate and the protrusion of the second biting plate engage, and the positioning groove of the first biting plate and the positioning groove of the second biting plate can form a complete slot, and the limiting block at the end of the insertion rod engages in the middle of the complete slot formed by the positioning groove and the positioning groove.

[0010] In some embodiments, the positioning block abuts against one side of the engagement plate.

[0011] This utility model has at least the following beneficial effects:

[0012] 1. When in use, this utility model can achieve a high-strength connection of purlins. It adopts a tenon and mortise interlocking and double locking mechanism. The groove of the first interlocking plate and the protrusion of the second interlocking plate are engaged to form a strong horizontal shear resistance. The insertion rod and the positioning groove form a vertical lock. Combined with the auxiliary fixing of the bottom card plate and slot, the load is distributed from multiple dimensions to prevent the purlins from being misaligned or loosened. It can effectively resist dynamic external forces such as wind and snow and ensure the long-term stability of the structure.

[0013] 2. When using this utility model, a modular design is adopted, and each component can be prefabricated. On-site, only the interlocking plates need to be interlocked to achieve initial positioning, and screws and plugs are used for quick fastening. No complicated welding or professional tools are required, which greatly shortens the construction time. The detachable structure also facilitates later maintenance and replacement, reducing labor and time costs. It is especially suitable for large-scale prefabricated building construction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the positional relationship between the movable groove and the interlocking plate of this utility model;

[0016] Figure 3 This is a schematic diagram showing the positional relationship between the movable groove and the interlocking plate of this utility model;

[0017] Figure 4 This is a schematic cross-sectional view of two adjacent connecting plates of this utility model.

[0018] In the diagram: 1. Purlin body; 11. Screw hole; 12. Galvanized coating; 13. Bottom fixing plate one; 14. Slot; 15. Bottom fixing plate two; 16. Slot plate; 2. Connecting plate; 21. Movable groove; 22. Engaging plate one; 23. Recessed groove; 24. Positioning groove one; 25. Insert rod; 26. Limiting block; 27. Engaging plate two; 28. Positioning groove two; 29. ​​Positioning block; 30. Protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a galvanized purlin connector, comprising two purlin bodies 1, with connecting plates 2 threadedly connected to the upper ends of both purlin bodies 1 by screws. Each connecting plate 2 has a movable groove 21 in its middle. A locking plate 22 is rotatably mounted in the middle of one of the movable grooves 21. A recessed groove 23 is formed on one side of the locking plate 22, and a positioning groove 24 is formed above the middle of the recessed groove 23. A rod 25 is inserted through the upper end of the middle of one of the movable grooves 21, and a limit block 26 is fixedly mounted at one end of the rod 25. A rotatable locking plate 26 is rotatably mounted in the middle of the other movable groove 21. The device is equipped with a second biting plate 27. One side of the second biting plate 27 has a protrusion 30. A positioning groove 28 is opened above the middle of the protrusion 30. A positioning block 29 is fixedly installed on one side of the inner wall of another movable groove 21. The recessed groove 23 opened by the first biting plate 22 and the protrusion 30 of the second biting plate 27 engage. The positioning groove 24 opened by the first biting plate 22 and the positioning groove 28 opened by the second biting plate 27 can form a complete groove 14. The limiting block 26 at the end of the insertion rod 25 is engaged in the middle of the complete groove 14 formed by the positioning groove 24 and the positioning groove 28. The positioning block 29 abuts against one side of the second biting plate 27.

[0021] In this embodiment, the purlin body 1 in the middle of the connecting plate 2 provides room for the rotation of the interlocking plates 22 and 27. During connection, the recessed groove 23 of the interlocking plate 22 engages with the protrusion 30 of the interlocking plate 27, forming a mortise and tenon mechanical interlock. This effectively resists horizontal tensile and shear forces, preventing the purlin body 1 from shifting or separating under load. When the purlin body 1 bears the roof load, the protrusion 30 can be embedded in the recessed groove 23, limiting relative movement through geometric shape. Compared with traditional bolt connections, it is more resistant to dynamic loads. After passing through the movable groove 21, the limiting block 26 engages with the complete groove 14 formed by the positioning groove 1 24 and the positioning groove 28, forming a vertical lock to prevent the biting plate 1 22 and the biting plate 27 from loosening around the rotation axis. The positioning block 29 abuts against the side of the biting plate 27, which can limit the rotation angle of the biting plate 27 and ensure that the protrusion 30 can be accurately embedded in the recessed groove 23. Then, press the insertion rod 25 to make the limiting block 26 engage in the middle of the complete groove 14 formed by the two positioning grooves 1 24 and the positioning groove 28 below, avoiding the fit gap caused by installation error.

[0022] Example 2: As Figures 1-2 As shown, screw holes 11 are provided on both sides of the middle of both ends of the two purlin bodies 1. The surface of the purlin bodies 1 is coated with a galvanized coating 12. The lower ends of the two screw holes 11 are respectively fixed with a bottom fixing plate 13 and a bottom fixing plate 2 15 by screws. The bottom fixing plate 13 has a slot 14 on both sides of the middle of one end. The bottom fixing plate 2 15 has a clamping plate 16 fixedly installed on both sides of the middle of one end. The clamping plate 16 is engaged with the middle of the slot 14.

[0023] In this embodiment, two adjacent purlin bodies 1 are secured to the bottom fixing plate 13 and the bottom fixing plate 2 15 by screws and bolts through screw holes 11. This threaded connection provides strong fastening force and effectively resists tensile and shear forces. At the same time, the design of the clamping plate 16 being inserted into the clamping groove 14 further enhances the stability of the lateral connection, prevents the purlin bodies 1 from being misaligned or sliding relative to each other, and ensures that the overall structure remains stable when subjected to external forces such as roof loads and wind loads, reducing the risk of structural deformation or collapse. The galvanized coating 12 sprayed on the surface of the purlin body 1 can effectively isolate the metal from corrosive media such as air and moisture, greatly slowing down the corrosion rate of the purlin body 1 and giving it a longer service life.

[0024] like Figures 1-4As shown, during installation, first take two connecting plates 2 and fix them firmly by screwing them into the screw holes 11 at the ends of adjacent purlin bodies 1. At this time, one connecting plate 2 has a first interlocking plate 22 rotated to the middle, while the other has a second interlocking plate 27 rotated to the middle. Next, bring the two purlin bodies 1 with the connecting plates 2 installed close to each other, aligning the first interlocking plate 22 and the second interlocking plate 27 so that the recessed groove 23 on one side of the first interlocking plate 22 and the protrusion 30 of the second interlocking plate 27 engage with each other. Using the mortise and tenon mechanical interlocking structure, the relative horizontal movement of the two purlin bodies 1 is initially restricted. When the interlocking plates are fully engaged, the positioning block 29 will abut against one side of the second interlocking plate 27 to ensure the precise rotation angle of the second interlocking plate 27. This ensures that the protrusion 30 is accurately embedded in the recessed groove 23, avoiding gaps caused by installation errors. At this time, the positioning groove 24 of the first biting plate 22 and the positioning groove 28 of the second biting plate 27 form a complete groove 14 in the engaged state. The insertion rod 25 is passed through the movable groove 21, so that the limiting block 26 at the end of the insertion rod 25 is engaged in the middle of the groove 14, locking the first biting plate 22 and the second biting plate 27 from the vertical direction to prevent them from loosening around the rotation axis. After completing the above steps, the upper parts of the two purlin bodies 1 are stably connected by the connecting plate 2, the interlocking plate, and the insert rod 25. At the lower part of the purlin bodies 1, the bottom fixing plate 13 and the bottom fixing plate 15 are respectively fixed to the two purlin bodies 1 with screws. The slots 14 on both sides of the middle of one end of the bottom fixing plate 13 and the locking plates 16 on both sides of the middle of one end of the bottom fixing plate 15 engage with each other, further enhancing the stability of the lateral connection between the two purlin bodies 1 and preventing misalignment or relative sliding of the purlin bodies 1. Furthermore, the galvanized coating 12 on the surface of the purlin bodies 1 isolates corrosive media, enhancing the durability of the entire connection structure, ultimately forming a strong, stable, and corrosion-resistant whole between the two adjacent purlin bodies 1.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A galvanized purlin connector, comprising two purlin bodies (1), wherein a connecting plate (2) is threadedly connected to the upper part of each end of the two purlin bodies (1) by screws, characterized in that: Both connecting plates (2) have a movable groove (21) in the middle. A first biting plate (22) is rotatably installed in the middle of one of the movable grooves (21). A recessed groove (23) is provided on one side of the first biting plate (22). A positioning groove (24) is provided above the middle of the recessed groove (23). A rod (25) is inserted through the movable groove (21) at the upper end of the middle of one of the movable grooves (21). A limit block (26) is fixedly installed at one end of the rod (25). A second biting plate (27) is rotatably installed in the middle of the other movable groove (21). A protrusion (30) is provided on one side of the second biting plate (27). A positioning groove (28) is provided above the middle of the protrusion (30). A positioning block (29) is fixedly installed on one side of the inner wall of the other movable groove (21).

2. The galvanized purlin connector according to claim 1, characterized in that: Both ends of the two purlin bodies (1) are provided with screw holes (11) on both sides of the middle part, and the surface of the purlin bodies (1) is coated with a galvanized coating (12).

3. A galvanized purlin connector according to claim 2, characterized in that: The lower ends of the two screw holes (11) are respectively fixed with a bottom fixing plate one (13) and a bottom fixing plate two (15) by screws.

4. A galvanized purlin connector according to claim 3, characterized in that: The bottom fixing plate one (13) has slots (14) on both sides of the middle of one end, and the bottom fixing plate two (15) has a card plate (16) fixedly installed on both sides of the middle of one end, and the card plate (16) is engaged in the middle of the slot (14).

5. A galvanized purlin connector according to claim 1, characterized in that: The recessed groove (23) of the first biting plate (22) and the protrusion (30) of the second biting plate (27) engage with each other. The positioning groove (24) of the first biting plate (22) and the positioning groove (28) of the second biting plate (27) can form a complete slot (14). The limiting block (26) at the end of the insertion rod (25) engages with the middle of the complete slot (14) formed by the positioning groove (24) and the positioning groove (28).

6. A galvanized purlin connector according to claim 1, characterized in that: The positioning block (29) abuts against one side of the second interlocking plate (27).

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