Adjustable metal roof assembling structure and assembling method

Abstract

The invention relates to an adjustable metal roof assembly structure and an assembly method, the adjustable metal roof assembly structure comprises a roof truss and a plurality of purlines, the purlines are erected between two ends of the roof truss and are parallel to the ground, at least two purlines are parallel to each other, and the purlines are connected with the roof truss. The structure further comprises a plurality of first U-shaped panels and a plurality of second U-shaped panels, the first U-shaped panels and the second U-shaped panels are alternately laid between the two purlines parallel to each other, and the inner walls of side plates of the first U-shaped panels abut against the inner walls of side plates of the second U-shaped panels. The mounting plate is fixedly connected with the purline through the connecting piece; according to the assembling structure of the metal roofing board, the roofing board is designed into two U-shaped panels which are connected at intervals, and the connecting pieces are designed into two different modes for assembling with the purlines, so that the assembling structure of the metal roofing board can meet various installation scenes with different wind power requirements.

Description

Technical Field

[0001] The present application relates to the technical field of construction engineering, and in particular to an adjustable metal roof assembly structure and an assembly method. Background Art

[0002] With the increasing number of steel structure buildings, the application of metal roofs has become more and more frequent. Metal roofs are widely used for their good structural rigidity, good waterproof performance, and easy installation.

[0003] In the prior art, purlins for installing metal roofs are usually reserved on the top of the steel structure building roof frame, and metal plates are installed on the purlins through mounting seats. The roof panel is usually assembled from multiple metal plates. However, the existing metal roof assembly structure has the following defects: 1. The metal plates and mounting seats are conventional parts, which makes their installation form single. However, the wind resistance required by buildings in different regions is different. The wind resistance required in areas prone to strong winds such as the seaside and plains is strong, while the wind resistance required in areas not prone to strong winds such as mountainous areas is weak. In view of the above situation, the single installation form of the metal plate cannot produce different sizes of wind resistance. Therefore, for a variety of different wind conditions, it is necessary to design a variety of mounting seats to adapt to different wind resistance requirements, which not only increases the production cost, but also increases the number of installation methods that construction personnel need to master, which is not conducive to the unified and standardized construction of buildings; 2. The existing metal plates are usually uneven structures to increase their structural rigidity. The joints of adjacent metal plates are usually installed in an overlapping manner. However, as the use time increases, the overlaps are prone to cause warping or curling, which in turn causes the waterproof ability and wind resistance to decrease, thereby causing hidden dangers in use.

[0004] Therefore, it is necessary for the inventor to design a new adjustable metal roof assembly structure and assembly method to overcome the above problems. Summary of the invention

[0005] The main purpose of the present application is to provide an adjustable metal roof assembly structure and assembly method to solve the problem that the installation method of metal plates in the related art cannot meet various wind protection requirements and the joints of the metal plates are prone to curling, resulting in a decrease in wind protection and waterproof capabilities.

[0006] In order to achieve the above objectives, in a first aspect, the present application provides an adjustable metal roof assembly structure, comprising a roof truss and a plurality of purlins, wherein the purlins are erected between two ends of the roof truss and parallel to the ground, and at least two of the purlins are parallel to each other, and further comprising:

[0007] A number of first U-shaped panels and a number of second U-shaped panels, the first U-shaped panels and the second U-shaped panels are alternately laid between two parallel purlins, the first U-shaped panels are fixedly installed upside down on the top of the purlins, and the inner walls of the side plates of the first U-shaped panels are in contact with the inner walls of the side plates of the second U-shaped panels;

[0008] An installation plate and a connecting piece, the installation plate is fixedly connected to the purlin through the connecting piece, the top of the installation plate is fixedly connected to the bottom of the cross plate of the first U-shaped panel or the bottom of the cross plate of the second U-shaped panel, and there is an assembly method between the connecting piece and the purlin that makes the top of the installation plate have two different heights. When the assembly method that makes the top height of the installation plate higher is adopted between the connecting piece and the purlin, the installation plate is fixedly connected to the first U-shaped panel, and when another assembly method is adopted, the installation plate is fixedly connected to the second U-shaped panel.

[0009] Preferably, the cross-section of the purlin is "C"-shaped, the connecting piece is a C-shaped plate, the outer height of the C-shaped plate is equal to the inner height of the purlin, and a plurality of corresponding through holes are respectively formed in the top plate and the bottom plate of the purlin and the C-shaped plate. A screw adapted to the through hole is fixedly provided at the bottom of the installation plate.

[0010] Preferably, sealing rubber strips are fixedly provided on the inner walls of the side plates of the first U-shaped panel and the second U-shaped panel.

[0011] Preferably, a locking assembly is further fixedly provided between the two side plates of the first U-shaped panel.

[0012] Preferably, the locking assembly includes a plurality of plug-in plates, two plug rods, and a number of connecting rods. The plug-in plates are symmetrically arranged in a linear array on the inner walls of the two side plates of the first U-shaped panel. The two plug rods are respectively fixedly connected to all the plug-in plates on both sides. The connecting rods are fixedly provided between the two plug rods, and an abutting portion for abutting against the two second U-shaped panels on both sides is further provided on the connecting rod.

[0013] Preferably, a socket is formed on the plug-in plate, the plug rod is inserted into the sockets on all the plug-in plates on the same side, and both ends of the plug rod have threads. The plug rod is fixedly connected to the plug-in plate through nuts that cooperate with the threads at both ends.

[0014] Preferably, two symmetrically arranged docking ports are provided on the connecting rod, and the two docking ports are sleeved on both ends of the plug rod and are fixedly pressed by nuts;

[0015] There are two connecting rods in total, and the two connecting rods are respectively fixedly provided at both ends of the plug rod.

[0016] Preferably, the abutting portion includes an abutting rod and a rubber cap, the abutting rod is fixedly arranged at the bottom of the connecting rod, and the rubber cap is sleeved on the end of the abutting rod.

[0017] Preferably, the connecting rod is a tension telescopic rod.

[0018] On the other hand, the present application also provides an adjustable metal roof assembly method, which is applied to the adjustable metal roof assembly structure as described above, and comprises the following steps:

[0019] S1. Fix the purlins on the roof truss so that they are parallel to the ground. The purlins are pre-opened with openings for inserting screws.

[0020] S2. Fix and connect the mounting plates on the purlins parallel to each other. When installing the mounting plates, select the first U-shaped panel and the second U-shaped panel of corresponding width according to the local climate, and select the assembly method of each connector and the purlin according to the width of the selected first U-shaped panel and the second U-shaped panel: the connector for installing the first U-shaped panel is selected to make the top of the mounting plate higher, and the connector for installing the second U-shaped panel is selected to make the top of the mounting plate lower;

[0021] S3. Install all the second U-shaped panels on the lower mounting plate at the top. Be careful not to damage the integrity of the second U-shaped panels during installation to avoid water leakage;

[0022] S4. Install all the first U-shaped panels on the mounting plate with a higher top. When installing, insert the two side walls of the first U-shaped panel into the two adjacent second U-shaped panels respectively. When inserting, slightly bend the side panels of the first U-shaped panel to deform it so that it can be inserted into the second U-shaped panel. After releasing the hand, the side walls of the first U-shaped panel abut against the side walls of the second U-shaped panel.

[0023] S5. Install a locking assembly between the two side plates of the first U-shaped panel, so that the locking assembly limits the distance between the two side plates of the first U-shaped panel to prevent it from deformation and failure, and at the same time presses against the outer wall of the side plate of the second U-shaped panel to prevent it from outward deformation.

[0024] The adjustable metal roof assembly structure and assembly method provided by the present invention have the following beneficial effects compared with the prior art:

[0025] First, by designing the roof panel to be connected with two U-shaped panels at intervals, and designing the connecting parts to be assembled with the purlins in two different ways, one of which is installed normally and the other is installed upside down, the assembly structure of the metal roof panel can meet the installation scenarios of various wind force requirements. At the same time, for the construction personnel, they only need to master two different connection methods of the connecting parts to realize the assembly of the roof panels in different scenarios. The learning cost and management cost of the construction personnel are reduced accordingly, which is conducive to the unified and standardized construction of buildings.

[0026] Second, a connecting rod is provided to connect the two side panels of the first U-shaped panel to limit the distance therebetween, and the side panels of the second U-shaped panel are pressed against it, so that the connection between the two is not prone to curling or warping, thereby ensuring good waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0028] Figure 1 It is the overall structural diagram of the present invention;

[0029] Figure 2 It is a structural diagram of the connection between the first U-shaped panel and the second U-shaped panel of the present invention;

[0030] Figure 3 The present invention Figure 2 A magnified view of the structure at center;

[0031] Figure 4 It is a structural diagram of the locking assembly of the present invention;

[0032] Figure 5 The present invention Figure 4 A magnified view of the structure at B in the middle;

[0033] Figure 6 It is an exploded view of the connection between the first U-shaped panel and the second U-shaped panel of the present invention.

[0034] Among them: 1. Roof truss; 2. Purlin; 3. First U-shaped panel; 4. Second U-shaped panel; 5. Mounting plate; 6. U-shaped plate; 7. Through port; 8. Screw; 9. Sealing strip; 10. Connecting plate; 11. Insert rod; 12. Connecting rod; 14. Abutting rod; 15. Rubber cap. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0039] In addition, the term "plurality" shall mean two or more.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] Embodiment 1:

[0042] like Figures 1 to 6As shown, an adjustable metal roof assembly structure includes a roof truss 1 and a plurality of purlins 2, wherein the purlins 2 are arranged between the two ends of the roof truss 1 and are parallel to the ground, and at least two of the purlins 2 are parallel to each other, and further includes:

[0043] A plurality of first U-shaped panels 3 and a plurality of second U-shaped panels 4, wherein the first U-shaped panels 3 and the second U-shaped panels 4 are alternately laid between two parallel purlins 2, the first U-shaped panels 3 are fixedly mounted on the top of the purlin 2 in an inverted manner, and the inner wall of the side panel of the first U-shaped panel 3 abuts against the inner wall of the side panel of the second U-shaped panel 4;

[0044] A mounting plate 5 and a connecting member, wherein the mounting plate 5 is fixedly connected to the purlin 2 via the connecting member, the top of the mounting plate 5 is fixedly connected to the bottom of the transverse plate of the first U-shaped panel 3 or to the bottom of the transverse plate of the second U-shaped panel 4, and there are assembly methods between the connecting member and the purlin 2 that allow the top of the mounting plate 5 to have two different heights. When the connecting member and the purlin 2 adopt an assembly method that makes the top height of the mounting plate 5 higher, the mounting plate 5 is fixedly connected to the first U-shaped panel 3, and when another assembly method is adopted, the mounting plate 5 is fixedly connected to the second U-shaped panel 4.

[0045] Specifically, during installation, first install the purlin 2 parallel to the ground, and then install the first U-shaped panel 3 and the second U-shaped panel 4 on the purlin 2. Since the first U-shaped panel 3 is installed in an inverted shape, the height of its installation point is higher than the installation height of the second U-shaped panel 4. Therefore, by changing the assembly method of the connecting piece and the purlin 2, the installation height of the mounting plate 5 is different to adapt to the installation of the first U-shaped panel 3 and the second U-shaped panel 4. It should be noted that in this embodiment, a plurality of installation points for installing connecting pieces are pre-set on the purlin 2 at intervals. According to the wind force at the location, the first U-shaped panel 3 and the second U-shaped panel 4 of different widths are selected. The number of connecting pieces required for different widths is different. For example, for areas with less wind force, the first U-shaped panel 3 and the second U-shaped panel 4 spanning four or five connecting piece widths can be selected, while for areas with stronger wind force, a metal panel spanning only one connecting piece width can be selected.

[0046] It should be noted that in this embodiment, the first U-shaped panel 3 and the second U-shaped panel 4 both have thickened plates, on which bolts are fixed, and the mounting plate 5 is provided with openings adapted to the bolts. This method avoids the situation where the bolts directly penetrate the panel, thereby reducing its waterproof performance.

[0047] In this embodiment, the roof panels are designed as two U-shaped panels connected at intervals, and the connecting pieces are designed in two different ways of assembling with the purlin 2 that conform to the normal installation of one panel and the inverted installation of the other panel. The assembled structure of the metal roof panel can meet the installation scenarios with various different wind force requirements. At the same time, for construction workers, only by mastering the two different connection methods of the connecting pieces, they can achieve the assembly of the roof panels in different scenarios, and the learning cost and management cost of the construction workers are correspondingly reduced, which is conducive to the unified standardization construction of the building.

[0048] The cross-section of the purlin 2 is in a "匚" shape, the connecting piece is a 匚-shaped plate 6, the outer height of the 匚-shaped plate 6 is equal to the inner height of the purlin 2, and a plurality of corresponding through holes 7 are respectively formed through the top plate and the bottom plate of the purlin 2 and the 匚-shaped plate 6. A screw 8 adapted to the through hole 7 is fixedly provided at the bottom of the mounting plate 5.

[0049] Specifically, the 匚-shaped plate 6 can be selectively installed on the top of the purlin 2 or in the inner cavity of the purlin 2. The bottom of the mounting plate 5 has a screw 8 adapted to the through hole 7. When the 匚-shaped plate 6 is installed on the top of the purlin 2, the mounting plate 5 on the top of the 匚-shaped plate 6 is used to install the first U-shaped panel 3. The screw 8 of the mounting plate 5 passes through the entire 匚-shaped plate 6 and is fixed to the top of the inner wall of the purlin 2 by a nut at the bottom. At this time, the main function of the 匚-shaped plate 6 is to raise the mounting plate 5; when the 匚-shaped plate 6 is installed inside the purlin 2, the screw 8 passes through the entire purlin 2 and the 匚-shaped plate 6 and is fixedly connected by a nut. At this time, the main function of the 匚-shaped plate 6 is to enhance the connection stability of the connection part of the mounting plate 5. It should be noted that here, the screw 8 needs to pass through at least three through holes 7 on the purlin 2 and the 匚-shaped plate 6, and each screw 8 is fixed by at least two nuts at different through holes 7 to enhance the connection stability of the screw 8 and reduce the loosening of the screw 8 due to the increase of the service time, thereby causing the panel to shake and reducing the waterproof performance.

[0050] Sealing rubber strips 9 are fixedly provided on the inner walls of the side plates of the first U-shaped panel 3 and the second U-shaped panel 4.

[0051] Specifically, the sealing rubber strip 9 makes the sealing performance of the contact part between the two better and improves the waterproof performance; it should be noted that the position of the sealing rubber strip 9 on the first U-shaped panel 3 is preferably lower than the position of the sealing rubber strip 9 on the second U-shaped panel 4, so that there is also a limiting effect in the vertical direction between the two panels, avoiding the vertical deviation of the two panels with the increase of the service time, and thus reducing the waterproof ability.

[0052] A locking assembly is also fixedly arranged between the two side panels of the first U-shaped panel 3; the locking assembly includes a plurality of plug-in boards 10, two plug-in rods 11, and a plurality of connecting rods 12. The plug-in boards 10 are symmetrically arranged in a linear array on the inner walls of the two side panels of the first U-shaped panel 3. The two plug-in rods 11 are respectively fixedly connected to all the plug-in boards 10 on both sides. The connecting rod 12 is fixedly arranged between the two plug-in rods 11. The connecting rod 12 also has an abutting portion for abutting the second U-shaped panel 4 on both sides.

[0053] Specifically, the plug rod 11 is fixedly connected to the plug board 10, and the connecting rod 12 is fixedly connected to the plug rods 11 on both sides, so that the distance between the two side panels of the first U-shaped panel 3 can be limited by the length of the connecting rod 12. As the use time of the first U-shaped panel 3 increases, its two side panels may tend to deflect outward or shrink inward, while the length of the connecting rod 12 remains unchanged, thereby offsetting this movement tendency. At the same time, the abutting portion on the connecting rod 12 is used to abut the outer wall of the side panel of the second U-shaped panel 4, ensuring that the connection between the two panels is always in a tight state, thereby ensuring the waterproof effect of the connection between the two panels.

[0054] The plug board 10 is provided with a socket, and the plug rod 11 is inserted into the sockets on all the plug boards 10 on the same side. Both ends of the plug rod 11 have threads, and the plug rod 11 is fixedly connected to the plug board 10 by nuts matching the threads at both ends; the connecting rod 12 has two symmetrically arranged docking ports, and the two docking ports are sleeved on both ends of the plug rod 11 and fixed by nuts; there are two connecting rods 12, and the two connecting rods 12 are fixedly arranged at both ends of the plug rod 11 respectively.

[0055] Specifically, the plug rod 11 is used here to connect with the sockets on multiple plug boards 10 at the same time, so that the limiting effect of the plug rod 11 on the side panel is more uniform, thereby avoiding the uneven deformation of the first U-shaped panel 3 under a single contact condition. During installation, the two plug rods 11 are inserted into the multiple plug boards 10 on both sides, so that the threaded parts at both ends are passed out, and then the two connecting rods are respectively plugged into the two ends of the two plug rods 11, and finally the plug rod 11, the plug board 10 and the connecting rod 12 are fixed by nuts.

[0056] The abutting portion includes an abutting rod 14 and a rubber cap 15 . The abutting rod 14 is fixedly disposed at the bottom of the connecting rod 12 , and the rubber cap 15 is sleeved on the end of the abutting rod 14 .

[0057] Specifically, during installation, the rubber cap 15 is put on the abutment rod 14 after the connecting rod 12 is installed and fixed. The rubber cap 15 should abut against the outer wall of the side plate of the second U-shaped panel 4 to press the connection between the second U-shaped panel 4 and the first U-shaped panel 3.

[0058] In this embodiment, a connecting rod 12 is provided to connect the two side panels of the first U-shaped panel 3 to limit the distance therebetween, and the side panels of the second U-shaped panel 4 are pressed against it, so that curling or warping is not likely to occur at the connection between the two, thereby ensuring good waterproof performance.

[0059] On the other hand, the present application also provides an adjustable metal roof assembly method, which is applied to the adjustable metal roof assembly structure as described above, and comprises the following steps:

[0060] S1. Fix the purlin 2 on the roof truss 1 so that the purlin 2 is parallel to the ground. The purlin 2 is pre-opened with a through hole 7 for inserting the screw 8; specifically, the spacing between the through holes 7 on the purlin 2 is fixed, and the width of the first U-shaped panel 3 and the second U-shaped panel 4 can be set according to the spacing between the through holes 7. The width difference between panels of different models is one through hole 7 spacing.

[0061] S2. Fix and connect the mounting plates 5 on the purlins 2 which are parallel to each other. When installing the mounting plates 5, select the first U-shaped panel 3 and the second U-shaped panel 4 of corresponding width according to the local climate. Select the assembly method of each connector and the purlin 2 according to the width of the selected first U-shaped panel 3 and the second U-shaped panel 4: select the connector for installing the first U-shaped panel 3 in a connection method that makes the top of the mounting plate 5 higher, and select the connector for installing the second U-shaped panel 4 in a connection method that makes the top of the mounting plate 5 lower. Specifically, first fix and install the mounting plates 5, determine the assembly method of the connectors according to the pre-selected panel width, and pay attention to the spacing between the two panels. Therefore, the mounting plates 5 used to install the two panels should also be spaced accordingly.

[0062] S3. Install all the second U-shaped panels 4 on the lower mounting plate 5 at the top. Be careful not to damage the integrity of the second U-shaped panels 4 during installation to avoid water leakage.

[0063] S4. Install all the first U-shaped panels 3 on the mounting plate 5 with a higher top. During installation, insert the two side walls of the first U-shaped panel 3 into the two adjacent second U-shaped panels 4 respectively. When inserting, slightly bend the side panels of the first U-shaped panel 3 to deform it so that it can be inserted into the second U-shaped panel 4. After releasing your hands, the side walls of the first U-shaped panel 3 and the side walls of the second U-shaped panel 4 will abut against each other. During operation, since there are sealing strips 9 on the inner walls of the side panels of the first U-shaped panel 3 and the second U-shaped panel 4, the side panels should be bend outwards during installation so that the two can be butt-jointed and installed.

[0064] S5. Install a locking assembly between the two side panels of the first U-shaped panel 3, so that the locking assembly limits the distance between the two side panels of the first U-shaped panel 3 to prevent it from deforming and failing, and at the same time presses against the outer wall of the side panel of the second U-shaped panel 4 to prevent it from deforming outward. Specifically, the locking assembly pulls the side panel of the first U-shaped panel 3 inward and pushes the side panel of the second U-shaped panel 4 inward, so that the connection performance of the connection between the two is good and the possibility of curling and warping is reduced.

[0065] Embodiment 2: The difference between this embodiment and embodiment 1 is that the connecting rod 12 is a tension telescopic rod; specifically, the tension telescopic rod can be adjusted in length after installation, so that the two side panels of the first U-shaped panel 3 can have a tendency to tighten inward, so that the compression effect between the first U-shaped panel 3 and the second U-shaped panel 4 is better. Compared with embodiment 1, the locking effect of the connecting rod 12 of this application is better, but the cost is higher.

[0066] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable metal roof assembly structure, comprising a roof truss (1) and a plurality of purlins (2), wherein the purlins (2) are arranged between two ends of the roof truss (1) and are parallel to the ground, and at least two of the purlins (2) are parallel to each other, characterized in that: It further includes: A plurality of first U-shaped panels (3) and a plurality of second U-shaped panels (4), the first U-shaped panels (3) and the second U-shaped panels (4) are alternately laid between two parallel purlins (2), the first U-shaped panels (3) are fixedly installed upside down on the tops of the purlins (2), and the inner walls of the side plates of the first U-shaped panels (3) are in contact with the inner walls of the side plates of the second U-shaped panels (4); A mounting plate (5) and a connecting member, the mounting plate (5) is fixedly connected to the purlin (2) through the connecting member, the top of the mounting plate (5) is fixedly connected to the bottom of the cross plate of the first U-shaped panel (3) or the bottom of the cross plate of the second U-shaped panel (4), and there are two different assembling methods for the top of the mounting plate (5) between the connecting member and the purlin (2). When the assembling method with a higher height of the top of the mounting plate (5) is adopted between the connecting member and the purlin (2), the mounting plate (5) is fixedly connected to the first U-shaped panel (3), and when the other assembling method is adopted, the mounting plate (5) is fixedly connected to the second U-shaped panel (4).

2. The adjustable metal roof assembly structure according to claim 1, characterized in that: The cross-section of the purlin (2) is in a "C" shape, the connecting member is a C-shaped plate (6), the outer height of the C-shaped plate (6) is equal to the inner height of the purlin (2), and a plurality of corresponding through holes (7) are respectively formed through the top plate and the bottom plate of the purlin (2) and the C-shaped plate (6). A screw rod (8) adapted to the through hole (7) is fixedly provided at the bottom of the mounting plate (5).

3. The adjustable metal roof assembly structure according to claim 1, characterized in that: Sealing rubber strips (9) are fixedly provided on the inner walls of the side plates of the first U-shaped panel (3) and the second U-shaped panel (4).

4. The adjustable metal roof assembly structure according to claim 1, characterized in that: A locking assembly is further fixedly provided between the two side plates of the first U-shaped panel (3).

5. The adjustable metal roof assembly structure according to claim 4, characterized in that: The locking assembly includes a plurality of plugging plates (10), two plug rods (11), and a plurality of connecting rods (12). The plugging plates (10) are symmetrically arranged in a linear array on the inner walls of the two side plates of the first U-shaped panel (3). The two plug rods (11) are respectively fixedly connected to all the plugging plates (10) on both sides. The connecting rods (12) are fixedly provided between the two plug rods (11), and an abutting portion for abutting against the second U-shaped panels (4) on both sides is further provided on the connecting rod (12).

6. The adjustable metal roof assembly structure according to claim 5, characterized in that: A plug hole is formed in the plugging plate (10), the plug rod (11) is inserted into the plug holes on all the plugging plates (10) on the same side, and both ends of the plug rod (11) have threads. The plug rod (11) is fixedly connected to the plugging plate (10) through nuts matching the threads at both ends.

7. The adjustable metal roof assembly structure according to claim 6, characterized in that: Two symmetrically arranged docking ports are provided on the connecting rod (12), and the two docking ports are sleeved on both ends of the plug rod (11) and are fixedly pressed by nuts; There are two connecting rods (12) in total, and the two connecting rods (12) are respectively fixedly provided at both ends of the plug rod (11).

8. The adjustable metal roof assembly structure according to claim 5, characterized in that: The abutment portion comprises an abutment rod (14) and a rubber cap (15); the abutment rod (14) is fixedly arranged at the bottom of the connecting rod (12); and the rubber cap (15) is sleeved on the end of the abutment rod (14).

9. The adjustable metal roof assembly structure according to claim 5, characterized in that: The connecting rod (12) is a tension telescopic rod.

10. An adjustable metal roof assembly method, characterized in that: The adjustable metal roof assembly structure as claimed in any one of claims 1 to 9 comprises the following steps: S1. Fix the purlin (2) on the roof truss (1) so that the purlin (2) is parallel to the ground, and a through hole (7) for inserting a screw (8) is pre-opened on the purlin (2); S2. A mounting plate (5) is fixedly connected to mutually parallel purlins (2). When installing the mounting plate (5), a first U-shaped panel (3) and a second U-shaped panel (4) of corresponding width are selected according to the local climate. The assembly method of each connecting member and the purlin (2) is selected according to the width of the selected first U-shaped panel (3) and the second U-shaped panel (4): the connecting member used for installing the first U-shaped panel (3) is selected in a connection method that makes the top of the mounting plate (5) higher, and the connecting member used for installing the second U-shaped panel (4) is selected in a connection method that makes the top of the mounting plate (5) lower; S3. Install all the second U-shaped panels (4) on the lower mounting plate (5) at the top. During installation, be careful not to damage the integrity of the second U-shaped panels (4) to avoid water leakage; S4. Install all the first U-shaped panels (3) on the mounting plate (5) with a higher top. When installing, insert the two side walls of the first U-shaped panel (3) into the two adjacent second U-shaped panels (4) respectively. When inserting, slightly bend the side panels of the first U-shaped panel (3) to deform it so that it can be inserted into the second U-shaped panel (4). After releasing the hand, the side wall of the first U-shaped panel (3) abuts against the side wall of the second U-shaped panel (4); S5. Install a locking assembly between the two side plates of the first U-shaped panel (3) so that the locking assembly limits the distance between the two side plates of the first U-shaped panel (3) to prevent deformation and failure thereof, and at the same time presses against the outer wall of the side plate of the second U-shaped panel (4) to prevent outward deformation thereof.

Images