Overlock unit, supporting panel comprising overlock unit and roof structure comprising overlock unit

Abstract

The utility model relates to a lockrand unit, a supporting panel comprising the lockrand unit and a roof structure, and belongs to the field of building structures. The edge locking unit comprises a first folded plate and a second folded plate which are buckled with each other, and a fixing fastener fixed on the roof structure; the supporting panel comprises a first panel, a second panel, an edge locking unit and a protruding part. The roof structure comprises a main steel unit, a purline unit, a supporting bottom plate, a sound absorption unit, a damp-proof unit, a heat preservation unit, a waterproof unit, a supporting panel, a decoration layer keel and a decoration layer which are sequentially arranged from bottom to top. The purline unit comprises a primary purline, a purline supporting plate and a secondary purline, and a lining purline and a lining purline support are arranged in the heat preservation unit. The adjacent panels are fixedly connected through the lockrand units capable of being arranged on the roof structure, the fixing strength of the supporting panels on the roof structure is improved, and then the wind uplift resistance and leakage prevention performance of the supporting panels and the roof structure are improved.

Description

Technical Field

[0001] The utility model belongs to the field of building structures and relates to an edge locking unit and a supporting panel and a roof structure comprising the edge locking unit. Background Art

[0002] Using metal as roofing material is a common form of building structure. It has been widely used in more and more large-span building structures due to its advantages of light weight, high strength, corrosion resistance, and easy processing. Every link of metal roof construction is related to the safety and stability of the entire building structure project, and plays a vital role.

[0003] Metal roofs are often exposed to harsh environments during their service life, such as wind loads, long-term exposure to the air, and erosion and damage from natural environments such as wind loads, rain, and snow. Under the action of such alternating dynamic loads, it is very likely that the structure will suffer from wind damage and leakage, which seriously threatens the structural stability and safety of the building. Therefore, the anti-leakage problem of metal roofs during use has gradually attracted widespread attention from researchers.

[0004] The reasons for leakage in metal roofs are: first, the connection and sealing between the various components of the roof are poor; second, the construction and structural design of the roof are unreasonable, resulting in a small drainage slope and condensation water accumulation inside the roof; third, the waterproof material of the roof is improperly selected, and the material is easy to deform, tear, leak, etc.; fourth, other reasons, such as the roof material and type do not match the local climate environment, and technical defects are prone to occur during the construction process, resulting in poor roof construction quality.

[0005] Currently, the most commonly used roof waterproofing method is to lay waterproof membranes directly on the metal roof. This method is simple to construct, but it also has problems such as environmental pollution, high cost, and safety hazards. During the laying process, due to technical defects or omissions, the sealing of the interfaces is unqualified, which will leave waterproof loopholes in the entire roof system. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a locking unit and a supporting panel and a roof structure including the locking unit, so as to enhance the wind resistance and leakage prevention performance of the metal roof.

[0007] In order to achieve the above object, the utility model provides the following technical solutions:

[0008] A locking unit is used to fix and connect adjacent supporting panels arranged on a roof structure, the locking unit includes a first folding plate and a second folding plate respectively connected to the supporting panels, and the first folding plate and the second folding plate are interlocked with each other on the side away from the supporting panels; the first folding plate is provided with a groove opening toward the second folding plate on the side close to the supporting panel, and the groove is formed by bending the first folding plate into an S shape; a fixing fastener is clamped in the groove, and the fixing fastener is fixed to the roof structure on the side away from the groove.

[0009] Optionally, the fixing fastener includes a third folding plate and a fourth folding plate that are cross-arranged with each other, and a side of the fourth folding plate away from the third folding plate is bent downward to form a fourth bending portion; the fourth bending portion is clamped in the groove.

[0010] Optionally, a first bending portion facing the groove is provided on the side of the first folding plate away from the groove, a second bending portion in the same direction as the first bending portion is provided on the side of the second folding plate close to the first bending portion, and a third bending portion connected to the second bending portion, the second bending portion and the third bending portion form a U-shaped structure, and the U-shaped groove of the U-shaped structure is used to clamp the first bending portion.

[0011] A supporting panel comprises at least two panels arranged side by side, including a first panel and a second panel, wherein the adjacent first panel and second panel are fixedly connected by the locking unit described in any of the preceding items; the first panel is bent toward a side away from the roof structure to form the first folding plate, and the second panel is bent toward a side away from the roof structure to form the second folding plate.

[0012] Optionally, the support panel further includes a raised component arranged thereon, and a accommodating cavity with an opening facing downward is arranged in the raised component.

[0013] A roof structure comprises a main steel unit, a purlin unit, a supporting base plate, a sound-absorbing unit, a moisture-proof unit, a heat-insulating unit, a waterproof unit, a decorative layer keel and a decorative layer, which are arranged in sequence from bottom to top and fixedly connected; a supporting panel according to any of the aforementioned types is arranged between the waterproof unit and the decorative layer keel, one end of the fixing fastener is fixedly connected to the waterproof unit, and the other end is buckled in the groove.

[0014] Optionally, a raised component is provided on one side of the supporting panel close to the decorative layer keel, and a accommodating cavity with an opening facing downward is provided in the raised component, one end of the first connecting component is clamped in the accommodating cavity through the opening, and the other end passes through the waterproof unit and is fixed to the thermal insulation unit; the raised component is clamped in the second connecting component, and the supporting panel is connected to the decorative layer keel via the raised component and the second connecting component in sequence.

[0015] Optionally, a lining purlin support is embedded in the insulation unit, one end of the lining purlin support is fixedly connected to the insulation unit, and the other end passes through the moisture-proof unit, the sound-absorbing unit, and the supporting bottom plate in sequence and is connected to the purlin unit; a lining purlin is also embedded in the insulation unit, one end of the lining purlin is fixedly connected to the lining purlin support, and the other end is connected to the supporting panel through the first connecting component.

[0016] Optionally, the waterproof unit includes a plurality of overlapping waterproof membranes, at least one layer of waterproof membrane is added to the overlapping ends of adjacent waterproof membranes, and the overlapping ends are in a "T-shape".

[0017] Optionally, the purlin unit includes a main purlin arranged above the main steel unit, and a secondary purlin arranged crosswise above the main purlin; the intersection of the main purlin and the secondary purlin is connected by a purlin support plate; the lining purlin support is connected to the secondary purlin.

[0018] The beneficial effects of the utility model are:

[0019] The utility model adopts a locking unit to lock the edges between adjacent supporting panels. On the one hand, the adjacent panels are locked to each other, which can completely isolate the entry of external water. On the other hand, the supporting panels are fixed to the roof structure by the fixing fasteners arranged between the adjacent panels. The structure is firm and the waterproof and anti-leakage performance of the supporting panels is improved. Since there is a gap at the connection of adjacent panels, in case of strong winds, the airflow can easily blow into the gap at the connection. If the panel and the overall structure of the roof are not fixed firmly enough, they will be blown up by the strong wind and the wind will be lifted from the connection of the adjacent panels. The fixing fasteners of the locking unit of the utility model fix the locking unit and the supporting panel to the roof structure, making the connection more tight, improving the connection strength of the connection, and thus overcoming the wind lifting problem of the roof.

[0020] The utility model also provides a supporting panel and a roof structure including the locking unit, optimizes the structural structure of the metal roof, and optimizes the type of waterproof membrane, performs locking treatment on the key connection parts of the supporting panel, prevents external water on the roof structure from leaking into the room, achieves the effect of waterproofing and preventing leakage of the metal roof, and has good practicality and waterproof performance.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a cross-sectional schematic diagram of the edge locking unit;

[0024] Figure 2 For the edge locking unit Figure 1 ;

[0025] Figure 3 For the edge locking unit Figure 2 ;

[0026] Figure 4 This is an enlarged view of the C part of the edge locking unit;

[0027] Figure 5 This is an enlarged view of the D part of the edge locking unit;

[0028] Figure 6 This is a diagram of the installation process of the edge locking unit;

[0029] Figure 7 This is an enlarged view of the E part of the edge locking unit;

[0030] Figure 8 is a schematic diagram of fixing fasteners;

[0031] Fig. 9 This is the axonometric drawing of the roof structure;

[0032] Fig.10 This is the AA section view of the roof structure;

[0033] Fig.11 This is the BB section view of the roof structure;

[0034] Fig.12 This is an enlarged view of part F of the roof structure;

[0035] Fig.13 This is a schematic diagram of the overlap of waterproof membrane.

[0036] Reference numerals:

[0037] 1 main steel unit, 2 purlin unit, 21 main purlin, 22 secondary purlin, 23 purlin support plate, 3 supporting bottom plate, 4 sound-absorbing unit, 5 moisture-proof unit, 6 thermal insulation unit, 61 lining purlin, 62 lining purlin support, 7 waterproof unit, 8 supporting panel, 81 raised component, 82 first panel, 821 first folded plate, 8211 first bending portion, 8212 groove, 83 second panel, 832 second folded plate, 8321 second bending portion, 8322 third bending portion, 9 fixing fastener, 91 third folded plate, 92 fourth folded plate, 93 fourth bending portion, 10 decorative layer keel, 11 decorative layer, 12 first connecting component, 13 second connecting component. DETAILED DESCRIPTION

[0038] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0039] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0040] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] See also Figures 1 to 8 , is a locking unit, comprising a first folding plate 821 and a second folding plate 832 respectively connected to the supporting panel 8, and the first folding plate 821 and the second folding plate 832 are buckled with each other at a side away from the supporting panel 8; a groove 8212 with an opening toward the second folding plate 832 is provided on the side of the first folding plate 821 close to the supporting panel 8, and the groove 8212 is formed by bending the first folding plate 821 into an S shape; a fixing fastener 9 is clamped in the groove 8212, and the fixing fastener 9 is fixed to the roof structure at a side away from the groove 8212.

[0042] The fixing fastener 9 includes a third folding plate 91 and a fourth folding plate 92 which are arranged crosswise with each other. The side of the fourth folding plate 92 away from the third folding plate 91 is bent downward to form a fourth bending portion 93 ; the fourth bending portion 93 is clamped in the groove 8212 .

[0043] A first bending portion 8211 facing the groove 8212 is provided on the side of the first folding plate 821 away from the groove 8212, and a second bending portion 8321 in the same direction as the first bending portion 8211 and a third bending portion 8322 connected to the second bending portion 8321 are provided on the side of the second folding plate 832 close to the first bending portion 8211. The second bending portion 8321 and the third bending portion 8322 form a U-shaped structure, and the U-shaped groove of the U-shaped structure is used to clamp the first bending portion 8211.

[0044] like Figures 9 to 12 As shown, the utility model also provides a support panel 8 including the above-mentioned locking unit, including at least two panels arranged side by side, including a first panel 82 and a second panel 83, and the adjacent first panel 82 and second panel 83 are fixedly connected by the locking unit in any of the above items; the first panel 82 is bent toward the side away from the roof structure to form a first folded plate 821, and the second panel 83 is bent toward the side away from the roof structure to form a second folded plate 832. The first folded plate 821 is provided with a first bending portion 8211 facing the groove 8212 on the side away from the groove 8212, and the second folded plate 832 is provided with a second bending portion 8321 in the same direction as the first bending portion 8211 on the side close to the first bending portion 8211, and a third bending portion 8322 connected to the second bending portion 8321, and the second bending portion 8321 and the third bending portion 8322 form a U-shaped structure, and the U-shaped groove of the U-shaped structure is used to clamp the first bending portion 8211. The support panel 8 further includes a raised component 81 disposed thereon, and a receiving cavity with an opening facing downward is disposed in the raised component 81 .

[0045] The utility model also provides a roof structure including the above-mentioned locking unit and supporting panel, including a main steel unit 1, a purlin unit 2, a supporting base plate 3, a sound-absorbing unit 4, a moisture-proof unit 5, a heat-insulating unit 6, a waterproof unit 7, a decorative layer keel 10 and a decorative layer 11, which are arranged in sequence from bottom to top, and an anti-leakage supporting panel 8 is arranged between the waterproof unit 7 and the decorative layer keel 10.

[0046] The main steel unit 1 is made of steel, and the purlin unit 2 includes a main purlin 21 arranged above the main steel unit 1, a purlin support plate 23 fixed above the main purlin 21, and a secondary purlin 22 connected to the main purlin 21 through the purlin support plate 23. The side of the main purlin 21 connected to the main steel unit 1 fits the outer contour of the main steel unit 1. The main purlin 21 and the secondary purlin 22 are both arranged horizontally, and a plurality of them are arranged perpendicularly to each other along their axes, and each vertical intersection is connected through the purlin support plate 23. In some embodiments of the utility model, the main purlin 21 is welded to the main steel unit 1, the purlin support plate 23 is connected to the secondary purlin 22 by bolts, and the purlin support plate 23 is welded to the main purlin 21. In the actual implementation process, one or more fixed connection methods such as welding, bolt connection, and adhesive connection can be selected according to actual needs and conditions.

[0047] The support bottom plate 3 is laid on the secondary purlin 22 and connected to the secondary purlin 22 by bolts. In some embodiments of the present application, the support bottom plate 3 is a 0.6 mm thick aluminum-zinc corrugated steel plate.

[0048] The support bottom plate 3 is provided with a sound-absorbing unit 4 and a moisture-proof unit 5 in sequence. When the support bottom plate 3 is a corrugated steel plate, the corrugated steel plate is flattened by the sound-absorbing unit 4 and the moisture-proof unit 5. In some embodiments of the present invention, the sound-absorbing unit 4 is a 40 mm thick sound-absorbing cotton with a bulk density of 16 kg / m 3 , which has the effect of sound insulation on the roof; the moisture-proof unit 5 adopts a 0.3mm thick moisture-proof vapor barrier membrane, which has the effect of waterproofing and moisture-proofing in the roof structure.

[0049] The heat preservation unit 6 is laid on the moisture-proof unit 5, and a "J"-shaped lining purlin support 62 is embedded in the heat preservation unit 6. One end of the lining purlin support 62 is connected to the heat preservation unit 6 by bolts, and the other end is connected to the secondary purlin 22 after passing through the moisture-proof unit 5, the sound-absorbing unit 4, and the supporting bottom plate 3 in sequence. In some embodiments of the utility model, the heat preservation unit 6 adopts double-layer rock wool with a thickness of 50+75mm and a bulk density of 80kg / m 3 , the heat preservation unit 6 plays a role in heat preservation of the roof.

[0050] A "J"-shaped lining purlin 61 is also embedded inside the heat preservation unit 6, one end of the lining purlin 61 is connected to the lining purlin support 62 by bolts, and the other end is connected to the support panel 8. A waterproof unit 7 is laid on the heat preservation unit 6, and a support panel 8 is laid on the waterproof unit 7. The support panel 8 is connected to the lining purlin 61 by bolts through the first connecting component 12 clamped thereon, and the bolts penetrate the waterproof unit 7. The bolt penetration of the waterproof unit 7 is sealed to avoid water leakage from the bolt hole, thereby ensuring the anti-leakage effect of the roof structure.

[0051] In some embodiments of the utility model, the waterproof unit 7 uses a 1.5mm thick thermoplastic polyolefin (TPO) flexible waterproof membrane with a tensile strength of ≥12MPa, an elongation after break of ≥500%, good bending properties under low temperature (-40°C) conditions, no cracks, and is still qualified after 2500 hours of accelerated aging. The waterproof membrane is installed using the empty laying construction process and is directly laid on the upper layer of the thermal insulation rock wool; the supporting panel 8 is a 0.8mm thick aluminum-zinc-plated steel plate; the decorative layer keel 10 is an aluminum alloy supporting keel; the second connecting component 13 uses a wind-resistant clamp; the decorative layer 11 is a 4.0mm decorative aluminum plate.

[0052] The following points should be noted when storing and preserving waterproof membranes: After the materials leave the warehouse and enter the construction site, they should be properly kept at the construction site and the storage location should be safe and reliable. For example, waterproof materials must not be stored in places where water may accumulate. Storage and transportation should be strictly carried out in accordance with standards to prevent changes in material properties due to storage and transportation errors. When stacking, sleepers must be placed underneath. Materials stacked outdoors must be tightly covered with plastic sheets to avoid sun and rain. They must also be kept ventilated and dry to prevent contamination of the waterproof membranes.

[0053] Before laying the waterproof membrane, it is necessary to clean up the sharp objects on the surface of the base layer to ensure that the surface of the base layer is flat and free of debris, and it must be accepted in accordance with relevant regulations; when laying, it is naturally opened and stretched flat, and the laying direction is adjusted to be consistent with the long side direction of the "J"-shaped purlin. During the laying process, a temporary fixing method is used to prevent it from being blown away by the wind. The overlap width between adjacent waterproof membranes is 120mm, the overlap is tight, the connection is firm, there is no warping, and no air pockets. After laying, hot air welding is carried out, and the overlap seams are continuously welded to avoid local welding leaks. The effective welding width should be greater than 25mm; after construction, the finished product should be protected to prevent pollution. When the roof slope is large (slope exceeds 25%), the method of laying perpendicular to the ridge is adopted in accordance with the "Technical Code for Single-layer Waterproof Membrane Roof Engineering" (JGJ / T316-2013), that is, each membrane is set with a tie point every 3 meters and fixed with a purlin with self-drilling screws to prevent the TPO waterproof membrane from sliding down and ensure the flatness of the TPO waterproof membrane; the paving order is that the upslope TPO waterproof membrane is pressed on the downslope TPO waterproof membrane, and reverse overlap is not allowed, which is easy to cause water accumulation and backflow leakage. At the overlap of TPO waterproof membrane, the TPO waterproof membrane welding should be done well to ensure that the two adjacent TPO waterproof membranes are seamlessly connected. After welding, check the airtightness and use a special caulking tool to check the welding quality to ensure that there are no gaps. After the TPO waterproof membrane is paved, a water spray test should be carried out to ensure the waterproof performance of the waterproof layer.

[0054] The water spraying test uses fire hydrants to manually draw water to the roof, and the roof is continuously sprayed with water for at least 2 hours, with a water volume of 3L / m 2 / min. During the water spraying test, observe, check and record the indoor water leakage. After the water spraying, remove the water on the surface of the waterproof membrane and check its airtightness again. If there is no leakage at the connection of the TPO waterproof membrane, the bottom insulation rock wool is dry, and there is no leakage in the room, the water spraying test is passed.

[0055] When laying the waterproofing coil, a certain amount of expansion and contraction should be reserved to prevent the deformation of the waterproofing coil, the squeezed damage of the welds, the cracking of the glue seams, and other water leakage caused by the deformation of the supporting panel 8; if the roof drainage slope is less than 5%, it means that the overall roof is relatively flat, and flexible waterproofing coil roofs and stainless steel continuous welded roofs should be preferred. In some embodiments of the utility model, a vertical lock-edge metal roof is selected to prevent the supporting panel 8 from being disengaged due to wind damage, thereby damaging the first waterproof layer.

[0056] When laying the roof waterproofing membrane, there are concentrated deformation locations, mainly the end positions around the membrane, deformation joints and water outlets. These locations are prone to cracking and lead to leakage. The following treatment methods are adopted for the above three locations:

[0057] (1) The ends of the membrane are pressed into the side grooves of the surrounding parapet walls, and the joints between the membrane and the side grooves are sealed with adhesive. Finally, cement mortar is applied on top to enhance the sealing effect and further improve the waterproof performance of the waterproof membrane. The side grooves can be brick grooves.

[0058] (2) At least two layers of waterproof membranes are laid at the roof deformation joints. Adjacent waterproof membranes are overlapped and sealed. Cross seams (such as Figure 13-1 As shown), the overlap is arranged in a T-shape (as shown Figure 13-2 , 13-3), and the waterproof membrane is covered again at the end of the cross seam to enhance the sealing effect.

[0059] (3) Roof entrances and exits are prone to wear and tear due to frequent footsteps. Double-layer waterproof membranes should be laid around the entrances and exits to prevent wear and leakage.

[0060] The supporting panel 8 includes a plurality of panels laid side by side, and the panels are laid throughout the entire length to avoid leakage caused by overlap; the adjacent panels are fixedly connected by a locking unit to improve the waterproof effect of the adjacent surface connection parts and prevent water from leaking from the roof connection parts. The adjacent panels are the first panel 82 and the second panel 83, respectively, and a fixing fastener 9 is arranged between the first panel 82 and the second panel 83; the fixing fastener 9 includes a third folding plate 91 and a fourth folding plate 92 arranged perpendicularly to each other, the third folding plate 91 is arranged horizontally, and the fourth folding plate 92 is arranged vertically, wherein the fourth folding plate 92 is bent downward on the side away from the third folding plate 91 to form a fourth bending portion 93; in some embodiments of the utility model, the panel is a steel plate.

[0061] like Figures 4 to 7 As shown, the edge locking unit construction method includes the following steps:

[0062] S1, bend the adjacent parts of the first panel 82 and the second panel 83 upward respectively, the vertically bent part of the first panel 82 is the first folded plate 821, the vertically bent part of the second panel 83 is the second folded plate 832, and the first folded plate 821 and the second folded plate 832 are arranged to fit each other;

[0063] S2, a groove 8212 is provided on the first folding plate 821, and the fourth bent portion 93 of the fixing fastener 9 is clamped in the groove 8212, so that the fixing fastener 9 is installed on the first folding plate 821, and the fourth folding plate 92 is fixedly connected to the insulation unit 6 below the supporting panel 8 by bolts penetrating the waterproof unit 7 to achieve the fixing effect of the first panel 82, and the penetration of the waterproof unit 7 uses fluid rubber to be fully sprayed on the bolt connection of the fixing fastener 9 to avoid water leakage of the waterproof unit 7;

[0064] In some embodiments of the present invention, the bolts are self-drilling screws;

[0065] S3, the side of the first folded plate 821 away from the heat preservation unit 6 is horizontally bent to form a first bent portion 8211, the side of the second folded plate 832 away from the heat preservation unit 6 is first horizontally bent to form a second bent portion 8321, and the free end of the second bent portion 8321 is then bent downward to form a fourth bent portion 93, the second folded plate 832, the second bent portion 8321, and the third bent portion 8322 form a door-shaped structure, and cover the first bent portion 8211, wherein the second bent portion 8321 is in contact with the first bent portion 8211, and the second folded plate 832 is in contact with the first folded plate 821 and the fourth folded plate 92;

[0066] S4, bend the third bending portion 8322 toward the first bending portion 8211, so that the second bending portion 8321 and the third bending portion 8322 wrap the first bending portion 8211; then the second bending portion 8321 drives the first bending portion 8211 and the third bending portion 8322 to bend toward the second folding plate 832, so that the third bending portion 8322 is close to the first folding plate 821, and the locking process of the first panel 82 and the second panel 83 is completed.

[0067] The locking unit is arranged along the slope of the support panel 8 from low to high to prevent rainwater from flowing back. When locking the support panel 8, the principle is that the folding edge should be downward when water flows into the gutter, otherwise the folding edge should be upward. Do not use too much force when folding the edge, and the force should be applied evenly, and the folding angle should be consistent. When installing the edge flashing around the roof, install a foam plastic seal. The seal is tightly combined with the support panel 8 and the flashing, which can effectively prevent the wind from blowing rainwater into the support panel 8.

[0068] The utility model uses a locking unit to lock the edges between adjacent support panels 8. On the one hand, the adjacent panels are locked to each other, which can completely isolate the entry of external water. On the other hand, the support panel 8 is fixed to the roof structure by the fixing fasteners 9 clamped between the adjacent panels. The structure is firm and the waterproof and anti-leakage performance of the support panel 8 is improved. Since there is a gap at the connection of adjacent panels, in case of strong winds, the airflow can easily blow into the gap at the connection. If the panel and the overall structure of the roof are not fixed firmly enough, it will be blown up by the strong wind, and the wind will be lifted from the connection of the adjacent panels. The fixing fasteners 9 of the locking unit of the utility model fix the locking unit and the support panel 8 to the roof structure, making the connection more tight, improving the connection strength of the connection, and thus overcoming the wind lifting problem of the roof.

[0069] The utility model also provides a supporting panel 8 and a roof structure including the locking unit, optimizes the structural structure of the metal roof, and optimizes the type of waterproof membrane, performs locking treatment on the key connection parts of the supporting panel 8, prevents external water on the roof structure from leaking into the room, achieves the effect of waterproofing and preventing leakage of the metal roof, and has good practicality and waterproof performance.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A locking unit, characterized in that: Used for fixedly connecting adjacent supporting panels arranged on a roof structure, the locking unit comprises a first folding plate (821) and a second folding plate (832) respectively connected to the supporting panels, and the first folding plate (821) and the second folding plate (832) are mutually buckled at a side away from the supporting panels; a groove (8212) with an opening toward the second folding plate (832) is provided at a side of the first folding plate (821) close to the supporting panel, and the groove (8212) is formed by bending the first folding plate (821) into an S shape; a fixing fastener (9) is clamped in the groove (8212), and the fixing fastener (9) is fixed to the roof structure at a side away from the groove (8212).

2. The edge locking unit according to claim 1, characterized in that: The fixing fastener (9) comprises a third folding plate (91) and a fourth folding plate (92) which are arranged crosswise with each other, and the fourth folding plate (92) is bent downwardly on a side away from the third folding plate (91) to form a fourth bending portion (93); the fourth bending portion (93) is clamped in the groove (8212).

3. The edge locking unit according to claim 2, characterized in that: A first bending portion (8211) facing the groove (8212) is provided on the side of the first folding plate (821) away from the groove (8212), and a second bending portion (8321) in the same direction as the first bending portion (8211) and a third bending portion (8322) connected to the second bending portion (8321) are provided on the side of the second folding plate (832) close to the first bending portion (8211), the second bending portion (8321) and the third bending portion (8322) form a U-shaped structure, and the U-shaped groove of the U-shaped structure is used to clamp the first bending portion (8211).

4. A support panel, characterized in that: The invention comprises at least two panels arranged side by side, including a first panel (82) and a second panel (83); the adjacent first panel (82) and second panel (83) are fixedly connected by a locking unit according to any one of claims 1 to 3; the first panel (82) is bent toward a side away from the roof structure to form the first folding plate (821); the second panel (83) is bent toward a side away from the roof structure to form the second folding plate (832).

5. The support panel according to claim 4, characterized in that: It also includes a raised component (81) arranged thereon, wherein a receiving cavity with an opening facing downward is arranged in the raised component (81).

6. A roof structure, characterized in that: It comprises a main steel unit (1), a purlin unit (2), a supporting base plate (3), a sound absorbing unit (4), a moisture-proof unit (5), a heat-insulating unit (6), a waterproof unit (7), a decorative layer keel (10) and a decorative layer (11) which are arranged in sequence from bottom to top and fixedly connected; a supporting panel according to claim 4 is arranged between the waterproof unit (7) and the decorative layer keel (10); one end of the fixing fastener (9) is fixedly connected to the waterproof unit (7), and the other end is buckled in the groove (8212).

7. The roof structure according to claim 6, characterized in that: A protruding component (81) is provided on one side of the support panel (8) close to the decorative layer keel (10); a housing cavity with an opening facing downward is provided in the protruding component (81); one end of a first connecting component (12) is clamped in the housing cavity through the opening, and the other end passes through the waterproof unit (7) and is fixed to the heat preservation unit (6); the protruding component (81) is clamped in the second connecting component (13); the support panel (8) is connected to the decorative layer keel (10) via the protruding component (81) and the second connecting component (13) in sequence.

8. The roof structure according to claim 7, characterized in that: A lining purlin support (62) is embedded in the thermal insulation unit (6), one end of the lining purlin support (62) is fixedly connected to the thermal insulation unit (6), and the other end passes through the moisture-proof unit (5), the sound-absorbing unit (4), and the supporting bottom plate (3) in sequence and is connected to the purlin unit (2); a lining purlin (61) is also embedded in the thermal insulation unit (6), one end of the lining purlin (61) is fixedly connected to the lining purlin support (62), and the other end is connected to the supporting panel (8) via the first connecting component (12).

9. The roof structure according to claim 6, characterized in that: The waterproof unit (7) comprises a plurality of overlapping waterproof rolls, at least one layer of waterproof roll is added to the overlapping ends of adjacent waterproof rolls, and the overlapping ends are in a "T-shape".

10. The roof structure according to claim 8, characterized in that: The purlin unit (2) comprises a main purlin (21) arranged above the main steel unit (1), and a secondary purlin (22) arranged crosswise above the main purlin (21); the intersection of the main purlin (21) and the secondary purlin (22) is connected via a purlin support plate (23); and the lining purlin support (62) is connected to the secondary purlin (22).

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