Steel roof eave wind-resistant structure

Abstract

A kind of steel roof eaves wind-resistant structure, it relates to steel roof technical field, including batten board, multiple self-tapping screws and sealing device.Self-tapping screw passes through the opening on batten board and is connected with eaves beam, and compacts roof board;The diameter of opening is larger than the major diameter of screw, and sealing device is arranged in it, including protective sleeve embedded in hole and sealing ring arranged between screw and protective sleeve, sealing ring is expanded and tightly holds screw when screw is compacted and compacts roof board, and sealing is realized.Ring-shaped gasket and its bottom boss, annular groove on screw, and bending protrusion on batten board are arranged.Sealing device is arranged in the inside of opening, and is less affected by ultraviolet rays, rain, temperature difference and the like, has long service life, and is easy to maintain.The utility model improves the wind resistance and long-term sealing stability of roof.

Description

Technical Field

[0001] This utility model relates to the field of steel roof technology, and in particular to a wind-resistant structure for the eaves of a steel roof panel. Background Technology

[0002] In modern industrial and civil buildings, lightweight steel structure roofing systems are widely used due to their advantages such as light weight, fast construction speed, and high space utilization, especially in large-span factories, warehouses, stadiums, and public facilities. However, during long-term use, particularly under extreme weather conditions such as typhoons and heavy rains, the eaves area of ​​steel roof panels is highly susceptible to the negative pressure suction of strong winds, leading to edge lifting, loosening of connectors, or even complete stripping of the roof panels, seriously threatening the safety and functionality of the building structure. Therefore, improving the wind uplift resistance of the eaves area of ​​steel roofs has become a key technical challenge in roofing system design.

[0003] Traditional methods typically involve directly fixing roof panels to purlins or eaves beams using self-tapping screws, followed by localized pressure fixing using strips. However, this type of structure has significant shortcomings in wind resistance and waterproofing. Especially under repeated dynamic wind loads, the connection nodes are prone to slight displacement, leading to loosening of fasteners and a decrease in the overall stability of the roof. Furthermore, the holes created by self-tapping screws penetrating the strips and roof panels, if only treated with surface gaskets or on-site caulking, often fail to guarantee long-term waterproofing reliability. Leakage can easily occur due to aging of the sealant, cracking of the caulking compound, or uneven application, affecting the building's internal environment and structural durability.

[0004] To address the aforementioned issues, there is an urgent need for an integrated eaves connection structure that combines wind resistance reinforcement, structural enhancement, and long-term sealing to improve the overall performance and service life of steel roofing systems in complex environments. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a wind-resistant structure for the eaves of a steel roof panel, which aims to achieve a synergistic improvement in the wind resistance and waterproof performance of the eaves area of ​​the steel roof panel by optimizing the structure of the pressure strip, strengthening the mechanical anchoring mechanism and innovating the design of the sealing device.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] A wind-resistant structure for the eaves of a steel roof panel, comprising:

[0008] Pressure strips are used to press down steel roof panels;

[0009] Self-tapping screws, which are arranged at intervals along the pressure strip plate; the self-tapping screws are threadedly connected to the crossbeam at the eaves of the steel structure roof plate to tighten the pressure strip plate;

[0010] The pressure strip plate has an opening with a diameter larger than the major diameter of the self-tapping screw thread at the position corresponding to the self-tapping screw.

[0011] A sealing device, installed in the opening of the pressure strip plate; used to seal the gap between the self-tapping screw and the steel roof panel.

[0012] Preferably, the sealing device comprises:

[0013] The protective sleeve has an inwardly bent right-angle flange at the top; the protective sleeve is fitted onto the self-tapping screw and embedded in the opening of the pressure strip plate;

[0014] The sealing ring is located between the self-tapping screw and the protective sleeve. When the self-tapping screw tightens the protective sleeve, the protective sleeve presses the sealing ring onto the steel roof panel, causing the sealing ring to expand and deform inward, thus gripping the self-tapping screw.

[0015] Preferably, an annular washer is provided between the large end of the self-tapping screw and the pressure plate.

[0016] Preferably, the bottom of the inner ring of the annular gasket is provided with an annular boss capable of compressing the sealing ring.

[0017] Preferably, the self-tapping screw has an annular groove at the position corresponding to the sealing ring.

[0018] Preferably, the pressure strip plate has multiple bent protrusions spaced apart along its length.

[0019] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0020] (1) This utility model uses a strip plate to firmly fix the edge of the steel roof panel to the supporting structure below, which not only improves the overall wind resistance of the eaves area, but also forms a continuous drainage channel due to the multiple bent protrusions along the length of the strip plate. The application of self-tapping screws not only achieves a firm anchoring of the strip plate, preventing it from being lifted or peeled off under strong winds, but also further improves the waterproof sealing performance of the connection nodes through the design of the sealing device. The sealing device is integrated into the opening of the strip plate, forming an embedded sealing structure, which can achieve a reliable waterproof effect without the need for additional sealant, reducing the risk of leakage caused by uneven application of sealant or aging of the sealant on site.

[0021] (2) The sealing device of this utility model is located inside the opening of the pressure strip plate, and is less affected by the external environment (such as ultraviolet rays, rain erosion, temperature difference, etc.), and is not prone to material aging or performance degradation, thus having a longer service life. In addition, the structural design simplifies maintenance work, improves the convenience of maintenance, and provides more durable and stable protection for buildings.

[0022] (3) The annular washer of this utility model increases the pressure area of ​​the self-tapping screw head on the pressure strip plate, making the fastening force more evenly distributed in the local area of ​​the pressure strip plate, reducing local deformation or stress concentration caused by point load concentration. At the same time, the presence of the annular boss causes the sealing ring to produce more inward expansion deformation, enhancing its clamping force on the self-tapping screw shaft, and further compacting it onto the surface of the steel structure roof plate, thereby further improving the sealing performance on the original basis and reducing the risk of leakage.

[0023] (4) The present invention further designs an annular groove in the self-tapping screw, allowing some material to flow into the annular groove when the sealing ring is subjected to axial pressure, forming a local filling structure. This design effectively alleviates the frictional resistance problem caused by the sealing ring prematurely gripping the self-tapping screw shank, ensuring that the sealing ring can complete compression deformation in a relatively static state, and ultimately achieving a stable and reliable sealing state, further guaranteeing the waterproof performance and service life of the entire connection node. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model;

[0026] Figure 3 This is a partial cross-sectional view of the present invention;

[0027] Figure 4 A schematic diagram of the assembly of self-tapping screws and sealing devices;

[0028] Figure 5 This is a schematic diagram of the protective sleeve.

[0029] Figure 6 This is a schematic diagram of the structure of a ring-shaped gasket;

[0030] Figure 7 This is a three-dimensional structural diagram of a self-tapping screw.

[0031] In the diagram: 1. Pressure strip; 2. Self-tapping screw; 3. Sealing device; 3-1. Protective sleeve; 3-2. Sealing ring; 4. Annular gasket; 5. Annular boss; 6. Annular groove; 7. Steel roof panel. Detailed Implementation

[0032] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Example 1:

[0036] Combined with appendix Figures 1-5 A wind-resistant structure for the eaves of a steel roof panel includes a pressure strip 1, self-tapping screws 2, and a sealing device 3. The pressure strip 1 is installed at the eaves of the steel roof panel 7, and its function is to mechanically fasten the edge of the steel roof panel 7 firmly to the supporting structure below, thereby improving the overall wind resistance of the eaves area. As the main clamping component, the pressure strip 1 uses existing commercially available standard products, possessing certain structural strength and weather resistance, and is suitable for lightweight steel structure roofing systems in industrial and civil buildings. In this embodiment, the pressure strip 1 has multiple longitudinally distributed bent protrusions along its length. These bent protrusions not only enhance the bending stiffness of the pressure strip 1 itself but also form continuous drainage channels, i.e., drainage grooves, between adjacent pressure strips, allowing rainwater to drain orderly along the eaves direction, preventing water accumulation and improving the drainage efficiency of the roof system.

[0037] Along the length of the strip plate 1, multiple self-tapping screws 2 are provided for fixed connection. The self-tapping screws 2 penetrate the strip plate 1 and are screwed into the eaves beam below the steel roof panel 7 to anchor the strip plate 1. When the self-tapping screws 2 are tightened, their heads apply vertical pressure to the strip plate 1, causing the strip plate 1 to fit tightly against the surface of the steel roof panel 7, thereby firmly fixing the eaves portion of the steel roof panel 7 and preventing it from being lifted or peeled off under strong winds, effectively improving the wind resistance of the eaves area.

[0038] To further enhance the waterproof sealing performance of the connection nodes, through holes are provided on the pressure strip plate 1 at the installation positions of each self-tapping screw 2. The diameter of the through hole is larger than the major diameter of the threaded portion of the self-tapping screw 2 to provide space for the installation of subsequent sealing components. A sealing device 3 is provided inside the through hole. The sealing device 3 is used to seal any gaps that may exist between the self-tapping screw 2 after passing through the pressure strip plate 1 and the steel roof panel 7, preventing rainwater from seeping into the roof through the screw channel. Compared with the traditional method of only setting a flat sealing gasket between the head of the self-tapping screw 2 and the pressure strip plate 1, the sealing device 3 in this embodiment is integrated into the opening of the pressure strip plate 1, forming an embedded sealing structure. It eliminates the need to consider the gap between the pressure strip plate 1 and the steel roof panel 7, and can achieve a reliable waterproof effect without the need for additional sealant application, avoiding the risk of leakage caused by uneven on-site sealant application or sealant aging. In addition, since the sealing device 3 is located inside the opening of the pressure plate 1, it is less affected by external environment such as ultraviolet rays, rain erosion, and temperature difference changes, and is less prone to material aging or performance degradation, thus having a longer service life and greater maintenance convenience.

[0039] Specifically, as shown in the appendix Figure 3As shown, the sealing device 3 consists of two parts: a protective sleeve 3-1 and a sealing ring 3-2. The protective sleeve 3-1 has a cylindrical structure with an inwardly extending right-angle bend at its top edge. This structural feature restricts the axial displacement of the sealing ring 3-2 during assembly and provides positioning and protection for the sealing ring 3-2. The protective sleeve 3-1 is fitted onto the outer periphery of the shank of the self-tapping screw 2 and, as the self-tapping screw 2 is pressed, embeds itself into the opening of the pressure strip plate 1, ultimately positioning itself inside the opening. The sealing ring 3-2 is positioned between the shank of the self-tapping screw 2 and the inner wall of the protective sleeve 3-1, in a clamping state. When the self-tapping screw 2 is gradually tightened, its head transmits pressure to the protective sleeve 3-1 through the pressure strip plate 1, causing the protective sleeve 3-1 to move downwards, thereby pressing the sealing ring 3-2 against the top surface of the steel roof panel 7. Under this pressure, the sealing ring 3-2 undergoes radial inward elastic deformation, causing its inner edge to fit tightly against the surface of the self-tapping screw 2, while its outer edge is firmly pressed onto the steel roof panel 7. This creates a multi-layered sealing interface between the self-tapping screw 2 and the steel roof panel 7, effectively blocking the path of rainwater penetration along the screw channel and achieving a long-lasting and stable sealing effect.

[0040] It should be noted that the inner diameter of the sealing ring 3-2 in its free state is designed to be larger than the major diameter of the threaded portion of the self-tapping screw 2. This dimensional relationship allows the sealing ring 3-2 to be smoothly fitted onto the self-tapping screw 2, simplifying the assembly process and preventing damage to the sealing ring 3-2 due to forced stretching or compression during installation. More importantly, the section of the self-tapping screw 2 corresponding to the sealing ring 3-2 is designed as a smooth shank structure, meaning this section has no threads and a smooth surface. This is to prevent the threaded edges from scratching or cutting the sealing ring 3-2 during tightening, thus ensuring the integrity of the sealing ring 3-2 and the reliability of its sealing function. The length of this smooth shank section matches the axial thickness of the sealing ring 3-2, ensuring that the sealing ring 3-2 remains within the smooth shank area throughout the entire tightening process, unaffected by the threads.

[0041] Example 2:

[0042] Combined with appendix Figures 3-6 An improved version of Embodiment 1, this wind-resistant structure for the eaves of a steel roof panel, differs in that an annular washer 4 is added between the large end of the self-tapping screw 2 and the pressure strip plate 1. The annular washer 4 is a thin, ring-shaped sheet made of metal, with a central hole through which the self-tapping screw 2 passes, and its outer edge contacting the area around the opening in the pressure strip plate 1. The main function of the annular washer 4 is to increase the pressure area of ​​the self-tapping screw 2 on the pressure strip plate 1, making the tightening force more evenly distributed in the local area of ​​the pressure strip plate 1, reducing local deformation or stress concentration caused by point load concentration, thereby improving the stress stability and long-term durability of the connection joint.

[0043] Furthermore, the annular gasket 4 has a downwardly protruding annular boss 5 at the bottom of its inner ring, which extends towards the sealing device 3. When the self-tapping screw 2 is tightened, the annular boss 5 first contacts and presses against the protective sleeve 3-1, thereby transmitting the pressure to the sealing ring 3-2. Due to the presence of the annular boss 5, the sealing ring 3-2 undergoes more inward expansion deformation, enhancing its gripping force on the self-tapping screw 2 and further compacting it against the surface of the steel roof panel 7, thereby further improving the sealing performance on the basis of the original seal and reducing the risk of leakage.

[0044] Example 3:

[0045] Combined with appendix Figure 3 and 7 A wind-resistant structure for the eaves of a steel roof panel is further optimized based on the technical solutions of Embodiment 1 or Embodiment 2. The improvement lies in the following: an annular groove 6 is machined on the shank of the self-tapping screw 2 at the corresponding installation position of the sealing ring 3-2. This annular groove 6 is a ring-shaped groove opened along the circumference of the self-tapping screw 2 shank and located within the smooth shank section. During assembly, when the self-tapping screw 2 is screwed in and gradually presses against the sealing device 3, the sealing ring 3-2 undergoes radial deformation under axial pressure, and some material can flow into the annular groove 6, forming a local filling structure. The purpose of this design is to provide a space that allows the sealing ring 3-2 to expand locally, preventing it from completely gripping the shank of the self-tapping screw 2 during the initial tightening stage, thereby reducing the frictional resistance between the sealing ring 3-2 and the self-tapping screw 2. If the sealing ring 3-2 grips the screw too early, it may rotate with the self-tapping screw 2 during continued tightening, causing relative sliding friction between it and the surface of the steel roof panel 7 below, resulting in wear or even tearing of the edge of the sealing ring 3-2, affecting the sealing effect. The presence of the annular groove 6 effectively alleviates this problem, allowing the sealing ring 3-2 to complete compression deformation in a relatively static state, ultimately achieving a stable and reliable sealing state, further ensuring the waterproof performance and service life of the entire connection node.

[0046] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents within this utility model.

Claims

1. A wind-resistant structure for the eaves of a steel roof panel, characterized in that, include: Pressure strip (1), used to press the steel structure roof panel (7); Self-tapping screws (2) are arranged at intervals along the pressure strip plate (1); the self-tapping screws (2) are threadedly connected to the crossbeam at the eaves of the steel roof plate (7) to tighten the pressure strip plate (1). The pressure strip (1) has an opening with a diameter larger than the major diameter of the thread of the self-tapping screw (2) at the position corresponding to the self-tapping screw (2); A sealing device (3) is installed in the opening of the pressure strip plate (1) to seal the gap between the self-tapping screw (2) and the steel roof plate (7).

2. The wind-resistant structure for the eaves of a steel roof as described in claim 1, characterized in that, The sealing device (3) includes: The protective sleeve (3-1) has an inward right-angle bent flange at the top; the protective sleeve (3-1) is fitted onto the self-tapping screw (2) and embedded in the opening of the pressure strip plate (1); The sealing ring (3-2) is located between the self-tapping screw (2) and the protective sleeve (3-1). When the self-tapping screw (2) presses the protective sleeve (3-1) tightly, the protective sleeve (3-1) presses the sealing ring (3-2) onto the steel roof panel (7), causing the sealing ring (3-2) to expand and deform inward, thus holding the self-tapping screw (2).

3. The wind-resistant structure for the eaves of a steel roof as described in claim 1, characterized in that: An annular washer (4) is provided between the large end of the self-tapping screw (2) and the pressure plate (1).

4. The wind-resistant structure for the eaves of a steel roof as described in claim 3, characterized in that: The bottom of the inner ring of the annular gasket (4) is provided with an annular boss (5) that can compress the sealing ring (3-2).

5. The wind-resistant structure for the eaves of a steel roof as described in claim 1, characterized in that: The self-tapping screw (2) has an annular groove (6) at the position corresponding to the sealing ring (3-2).

6. The wind-resistant structure for the eaves of a steel roof as described in claim 1, characterized in that: The pressure strip (1) has multiple bent protrusions spaced apart along its length.

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