Snow fence assembly and shed roof snow fence system

Abstract

The application discloses a snow blocking device assembly and a snow blocking system for a shed roof, and strengthens the stress capacity of the snow blocking device assembly and the roof. The snow blocking device assembly comprises a snow blocking piece, two reinforced purlins, at least two mounting bases and at least one anti-instability purlin, the at least two mounting bases are provided with mounting holes and are arranged at intervals along the axial direction of the snow blocking piece; the two reinforced purlins are arranged at intervals along a first direction perpendicular to the axial direction of the snow blocking piece and are used for being connected with the body structure of a building; the at least one anti-instability purlin is arranged between the two reinforced purlins and connects the two reinforced purlins; wherein the snow blocking piece is arranged in the mounting hole and is connected with the at least two mounting bases arranged at intervals; the mounting bases and the two reinforced purlins are connected and are connected to the shed roof of the building body, the mounting bases and the reinforced purlins are distributed on the inner side and the outer side of the shed roof, and the shed roof structure is ensured not to be damaged by snow during snow melting and the safety of people and objects on the ground is ensured when snow falls.

Description

Technical Field

[0001] This invention relates to the field of building roof structure technology, specifically to a snow-blocking device assembly and a snow-blocking system for shed roofs. Background Technology

[0002] Large-span curved roof sheds are quite tall, and their slopes are steep near the ends. In areas with frequent snowfall, snow accumulates rapidly during melting, creating significant speed and impact. Snow falling from the roof can endanger people or objects on the ground. Furthermore, large-span curved roof sheds typically use lightweight profiled steel sheets, which are designed for easy bending and often have small wave heights (because larger wave heights prevent bending). This makes it difficult to secure commercially available snow-blocking assemblies. Even if secured, they cannot withstand the significant impact of melting snow. This impact can cause significant deformation of the profiled steel sheets, even cracking them, leading to damage at the snow-blocking assembly. Additionally, excessive snow accumulation can deform the purlins at the snow-blocking points, affecting aesthetics and resulting in unnecessary economic losses during subsequent repairs and maintenance.

[0003] Existing snow-blocking device assemblies and roof structures have technical problems such as failing to meet the snow-blocking requirements of curved roofs, weak structural strength leading to easy deformation and damage to the roof, complex subsequent repairs, and high repair costs. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a snow-blocking device assembly and a snow-blocking system for a material shed roof, which strengthens the load-bearing capacity of the snow-blocking device assembly and the roof, ensuring that the roof structure of the material shed is not damaged by snow accumulation during snow melting and that the safety of people and objects on the ground is guaranteed when the snow falls to the ground.

[0005] The solution to achieve the technical objective of this invention is a snow-blocking device assembly, comprising:

[0006] Snow protection components;

[0007] At least two mounting bases are provided with mounting holes and are spaced apart along the axial direction of the snow barrier;

[0008] Two reinforcing purlins are spaced apart along a first direction perpendicular to the axial direction of the snow barrier, for connection to the main structure of the building;

[0009] At least one anti-instability purlin is provided between two reinforcing purlins and connects the two reinforcing purlins;

[0010] The snow-blocking component is inserted into the mounting hole and connected to at least two mounting bases that are spaced apart. The mounting bases and the two reinforcing purlins are connected to the roof of the building body, and the mounting bases and the reinforcing purlins are distributed on the inner and outer sides of the roof.

[0011] In some embodiments, the mounting base includes:

[0012] Base plate, used for connection with the reinforcing purlin;

[0013] A side plate is provided on the base plate and has mounting holes parallel to the base plate;

[0014] A reinforcing plate connects the base plate and the side plate.

[0015] In some embodiments, the side plate is perpendicular to the base plate, and the reinforcing plate is perpendicular to both the base plate and the side plate; at least two mounting holes are provided on the side plate at intervals.

[0016] In some embodiments, the side plate is provided with four mounting holes, arranged in two vertical rows and two horizontal rows;

[0017] The number of mounting bases is n, the number of snow-blocking components is n-1 groups, the number is 2(n-1), and the two snow-blocking components in the same group are installed in two mounting holes in the same vertical row; the two adjacent groups of snow-blocking components are respectively installed in two vertical rows of mounting holes.

[0018] In some embodiments, the snow-blocking component is a round tube, and the diameter of the mounting hole is 1-3 mm larger than the diameter of the snow-blocking component;

[0019] The distance between two circular tubes in a vertical row and the distance between the lower circular tube and the base plate are d, where 30mm≤d≤80mm.

[0020] In some embodiments, the reinforcing purlin includes two spaced-apart flanges and a web connecting the two flanges.

[0021] In some embodiments, the reinforcing purlins are Z-shaped, and the webs are perpendicular to the two flanges; the two reinforcing purlins are oriented in the same direction.

[0022] Based on the same inventive concept, the present invention also provides a snow-blocking system for a shed roof, comprising:

[0023] A profiled sheet has continuous and staggered crest sections and trough sections. Along the length extension direction of the crest sections, the profiled sheet is bent to form an arc-shaped canopy.

[0024] At least two sets of the above-mentioned snow-blocking device assemblies are distributed on both sides of the central busbar of the roof along the length extension direction of the crest section; the at least two mounting bases of each snow-blocking device assembly are spaced apart along one busbar of the roof and are all located on the surface of the trough section.

[0025] The mounting base is inclined to the bottom surface of the canopy, with an angle of 30° to 45° with the ground, and the opening faces the center line of the canopy.

[0026] The reinforcing purlin is positioned corresponding to the mounting base. The mounting base and the reinforcing purlin are distributed on the inner and outer sides of the profiled plate, and the mounting base, the profiled plate, and the reinforcing purlin are fastened together.

[0027] In some embodiments, the same number of snow-blocking device assemblies are provided on both sides of the central busbar of the canopy;

[0028] Along the length extension direction of the crest section, the length span of the profiled sheet is L; if L≤100m, the number of snow-blocking device assemblies is 2; if 100m<L≤200m, the number of snow-blocking device assemblies is 4; if L>200m, the number of snow-blocking device assemblies is 6.

[0029] In some embodiments, the snow-blocking device assembly is symmetrically disposed on the profiled plate with reference to the central generatrix of the arc-shaped canopy.

[0030] As can be seen from the above technical solution, the snow-blocking device assembly provided by the present invention includes a snow-blocking component, two reinforcing purlins, at least two mounting bases, and at least one anti-instability purlin. The mounting bases are provided with mounting holes, and two or more mounting bases are spaced apart along the axial direction of the snow-blocking component. The snow-blocking component passes through the mounting holes and connects to the spaced-apart mounting bases, forming a basic snow-blocking structure. The two reinforcing purlins are spaced apart along a first direction perpendicular to the axial direction of the snow-blocking component, and are used to connect to the purlins of the building's main structure. The mounting bases and the two reinforcing purlins are connected to the roof of the building body, and the mounting bases and reinforcing purlins are distributed on the inner and outer sides of the roof, utilizing the structural strength of the building itself and its own purlin structure for reinforcement. The anti-instability purlin is located between the two reinforcing purlins, connecting them, and is positioned below the mounting bases, further enhancing the mechanical stability between the mounting bases and the reinforcing purlins.

[0031] The beneficial effects of this invention are as follows: When the snow-blocking device assembly is applied to a shed structure, especially an arched shed roof, when snow accumulates to a certain thickness on the profiled sheet of the shed roof, under the influence of wind load and rising temperature, the local snow falls at a high speed as the slope increases or as the distance of descent in the snow height increases. Therefore, before the snow accumulation speed reaches a high level, the snow-blocking components of the snow-blocking device assembly installed along the entire length of the roof can block or block the snow in sections, reducing the snow's sliding speed and the amount of snow accumulation. Some snow will pass through the gap between the snow-blocking component and the mounting base and slide down to the next snow-blocking device assembly or fall directly to the ground. Therefore, the amount of snow accumulation at each snow-blocking device assembly is limited. Furthermore, by using reinforcing purlins and anti-instability purlins to connect and fix with the purlin structure of the roof structure, the load-bearing capacity is strengthened, preventing damage to the profiled steel sheet of the shed roof. Moreover, the final amount of snow falling to the ground will not harm people or objects on the ground. Attached Figure Description

[0032] Figure 1 This is a schematic diagram showing the connection of the reinforcing purlin, mounting base, and anti-instability purlin of the snow-blocking device assembly provided in Embodiment 1 of the present invention;

[0033] Figure 2 This is a schematic diagram of the snow-blocking component of the snow-blocking device assembly provided in Embodiment 1 of the invention being installed on the mounting base;

[0034] Figure 3 This is a schematic diagram of a half-section of the snow-blocking system for the roof of the material shed provided in Embodiment 2 of the present invention;

[0035] Figure 4 for Figure 3 A schematic diagram of the cross-section at point A of the snow-blocking system on the roof of the shed.

[0036] Explanation of reference numerals in the attached drawings: 100-Snow barrier assembly; 110-Snow barrier component; 120-Mounting base; 121-Base plate; 122-Side plate; 123-Reinforcing plate; 124-Mounting hole; 130-Reinforcing purlin; 131-Wing plate; 132-Web plate; 140-Anti-instability purlin;

[0037] 1000-material shed roof snow protection system;

[0038] 200 - Forming sheet, 210 - Crest section, 220 - Valley section. Detailed Implementation

[0039] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] To address the technical problems of existing snow-blocking device assemblies and roof structures failing to meet the snow-blocking requirements of curved roof sheds and exhibiting weak structural strength and susceptibility to deformation, this invention provides a snow-blocking device assembly and roof snow-blocking system. This system strengthens the load-bearing capacity of the snow-blocking device assembly and roof, ensuring that the roof structure is not damaged by snow accumulation during snow melting and that the system guarantees the safety of people and objects on the ground when snow falls. The following two specific embodiments illustrate the invention in detail:

[0041] Example 1

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a snow-blocking device assembly 100, including a snow-blocking component 110, two reinforcing purlins 130, at least two mounting bases 120, and at least one anti-instability purlin 140. The mounting bases 120 are provided with mounting holes 124, and two or more mounting bases 120 are spaced apart along the axial direction of the snow-blocking component 110. The snow-blocking component 110 passes through the mounting holes 124 and connects to the spaced-apart mounting bases 120, forming a basic snow-blocking structure. The two reinforcing purlins 130 are spaced apart along a first direction perpendicular to the axial direction of the snow-blocking component 110, for connection to the purlins of the building's main structure. The mounting bases 120 and the two reinforcing purlins 130 are all connected to the roof of the building body. The mounting bases 120 and the reinforcing purlins 130 are distributed on the inner and outer sides of the roof, and are reinforced using the building's own structural strength and purlin structure. The anti-instability purlin 140 is located between and connects the two reinforcing purlins 130. The anti-instability purlin 140 is located below the mounting base 120, which further enhances the mechanical stability between the mounting base 120 and the reinforcing purlin 130.

[0043] When the snow-blocking device assembly 100 is applied to shed structures, especially arched shed roofs, when snow accumulates to a certain thickness on the profiled sheet 200 of the shed roof, under the influence of wind load and temperature rise, the local snowfall speed is high as the slope increases or as the descent distance of the snow accumulation increases. Therefore, when the snowfall speed has not yet reached a high level, the snow-blocking components 110 of the snow-blocking device assembly 100 installed along the entire length of the roof can block or block the snow in sections, reducing the snowfall speed and accumulation. The amount of snow is limited. Some of the snow will pass through the gap between the snow barrier 110 and the mounting base 120 and slide down to the next snow barrier assembly 100 or fall directly to the ground. Therefore, the amount of snow accumulation at each snow barrier assembly 100 is limited. Furthermore, the snow is connected and fixed to the roof purlin structure by the reinforcing purlin 130 and the anti-instability purlin 140, which strengthens the load-bearing capacity and prevents damage to the profiled steel sheet of the roof. In addition, the amount of snow that finally falls to the ground will not harm people or objects on the ground.

[0044] This embodiment does not limit the specific structure of the mounting base 120, as long as it can ensure connection with the snow shield 110 and the reinforcing purlin 130. To enhance the structural strength of the mounting base 120 itself, as one implementation, the mounting base 120 includes a base plate 121, a side plate 122, and a reinforcing plate 123: the base plate 121 is used to connect with the reinforcing purlin 130 and the roof; the side plate 122 is disposed on the base plate 121 and has mounting holes 124 parallel to the base plate 121; the reinforcing plate 123 connects the base plate 121 and the side plate 122, enhancing the impact resistance of the side plate 122.

[0045] In this embodiment, the side plate 122 is perpendicular to the bottom plate 121, and the reinforcing plate 123 is perpendicular to both the bottom plate 121 and the side plate 122, so as to form a triangular support structure with good structural strength.

[0046] To enhance snow blocking and achieve better snow blocking and deceleration effects, as one implementation method, the side plate 122 is provided with at least two mounting holes 124 spaced apart. The two mounting holes 124 are staggered in height so that there are at least two rows of snow blocking components 110 after installation. Snow accumulates and slides down through the gap between the two rows of snow blocking components 110 and the gap between the lower snow blocking component 110 and the bottom plate 121, which has a certain deceleration and buffering capacity.

[0047] To effectively block and stop the sliding snow while reducing the external load on the mounting base 120, as one implementation, the side plate 122 is provided with four mounting holes 124 arranged in two vertical rows and two horizontal rows; the number of mounting bases 120 is n, and the number of snow-blocking components 110 is n-1 groups, with two (n-1) groups, and the two snow-blocking components 110 in the same group are located in the two mounting holes 124 in the same vertical row; two adjacent groups of snow-blocking components 110 are respectively located in the two vertical rows of mounting holes 124, that is, when the number of mounting bases 120 is three or more, two snow-blocking components 110 are provided in a vertical row on both sides of the middle mounting base 120, and the snow-blocking components 110 provided on both sides of the side plate 122 are spaced apart along the horizontal row, such as... Figure 2 As shown.

[0048] In one embodiment, the snow shield 110 is a round tube, and for ease of installation, the diameter of the mounting hole 124 is 1-3 mm larger than the diameter of the snow shield 110.

[0049] Along the vertical direction, the distance between the two snow-blocking components 110 arranged in a vertical row and the distance between the lower snow-blocking component 110 and the base plate 121 determine the amount of snow accumulation at the mounting base 120. In this embodiment, the distance between the two round tubes in a vertical row and the distance between the lower round tube and the base plate 121 is d, 30mm≤d≤80mm.

[0050] In this embodiment, the structural shape of the reinforcing purlin 130 is not limited. In order to ensure the connection strength between the reinforcing purlin 130 and the roof structure purlin, and to ensure the overall strength of the snow blocking device assembly 100, as a preferred embodiment, the reinforcing purlin 130 includes two spaced-apart wing plates 131 and a web plate 132 connected between the two wing plates 131.

[0051] In some embodiments, the reinforcing purlin 130 may be H-shaped. In this embodiment, the reinforcing purlin 130 is Z-shaped, and the webs 132 are perpendicular to the two flanges 131. The two reinforcing purlins 130 have the same orientation, further ensuring the structural strength of the assembled snow-blocking device assembly 100. Preferably, the reinforcing purlin 130 and the structural roof purlins are made of the same type of material.

[0052] The assembly method of the snow-blocking device assembly 100 provided in this embodiment is as follows:

[0053] The side plates 122 and reinforcing plates 123 of the mounting base 120 are pre-welded to the base plate 121. The base plate 121, side plates 122, and reinforcing plates 123 can all be 8-12mm thick, welded using double-sided fillet welds. The snow-blocking component 110 passes through the pre-drilled circular hole in the side plate 122 and is fixed at a certain distance at the end with bolts to prevent the circular tube from falling out of the hole. The snow-blocking component 110 is a hollow tube. To prevent snow from entering the tube and causing rust and damage, the end of the snow-blocking component 110 is sealed. In this case, the snow-blocking component 110 is D48X3. The clear distance between the circular tubes should be calculated and determined based on the local snow accumulation conditions; in this case, it is taken as 50mm.

[0054] The assembled snow-blocking components are placed at designated positions on the roof. Two reinforcing purlins 130 are connected at intervals to the base plate 121 of the mounting base 120. The mounting base 120 and the reinforcing purlins 130 are distributed on the inner and outer sides of the roof. The reinforcing purlins 130 are used to connect and fix to the purlins of the building structure of the material shed. An anti-instability purlin 140 is set between the two reinforcing purlins 130. That is, the anti-instability purlin 140 is set below the base plate 121 of each mounting base 120. The anti-instability purlin 140 is connected to the reinforcing purlin 130 by weld and is connected at the bottom of the reinforcing purlin 130 and near the lower flange 131 of the reinforcing purlin 130 to prevent the lower flange 131 of the reinforcing purlin 130 from becoming unstable.

[0055] Example 2

[0056] Based on the same inventive concept, this embodiment provides a snow-blocking system 1000 for a shed roof, such as... Figure 2 and Figure 3As shown, the structure includes a profiled sheet 200 and at least two sets of snow-blocking device assemblies 100 provided in Embodiment 1. The profiled sheet 200 has continuous and staggered crest sections 210 and trough sections 220. Along the length extension direction of the crest section 210, the profiled sheet 200 is bent to form an arc-shaped roof. At least two sets of snow-blocking device assemblies 100 are distributed on both sides of the central generatrix of the roof along the length extension direction of the crest section 210. At least two mounting bases 120 of each snow-blocking device assembly 100 are spaced apart along a generatrix of the roof and are all located on the surface of the trough section 220. The bottom plate 121 of the mounting base 120 is installed between two purlins, and the plate of the mounting base 120 avoids the crest of the roof profiled steel sheet. The trough of the roof profiled steel sheet can always be found. The bottom plate 121 of the mounting base 120 and the roof profiled steel sheet are fixed together to the reinforcing purlin 130 with bolts. The mounting base 120 is inclined and attached to the bottom surface of the roof, with an angle of 30° to 45° to the ground, and its opening faces the center line of the roof. By installing snow-blocking device assemblies 100 in sections at specific slopes of the roof, the buffering capacity of the snow-blocking device assemblies 100 is fully utilized to allow only a portion of the snow to pass through, minimizing the impact of the snow and ensuring that the roof structure of the material shed is not damaged, as well as reducing the damage to the building when the snow falls. At the same time, it reduces the later maintenance costs and ensures the safety of people or objects below. The reinforcing purlins 130 are positioned corresponding to the mounting base 120. The mounting base 120 and the reinforcing purlins 130 are distributed on the inner and outer sides of the profiled sheet 200, and the mounting base 120, profiled sheet 200 and reinforcing purlins 130 are firmly connected, strengthening the connection strength between the mounting base 120 and profiled sheet 200 and the material shed foundation and other structures.

[0057] Because the curved profiled sheet 200, after being bent, generally has a gentler angle in the middle, while the angle between the curved sections and the ground increases towards the ends, meaning the slope at both ends is steeper, as snow slides down, the slope of the snow-covered area increases with the height of descent. According to the kinetic energy theorem, this further accelerates the speed at which the snow slides down, resulting in a large speed and impact force when the snow falls. This can easily deform the mounting base 120 and the snow-blocking component 110, and may even cause the mounting base 120 to overturn and connect to the profiled sheet 200, leading to roof damage. The snow-blocking system 1000 for the roof shed, including the snow-blocking device assembly 100 in Embodiment 1, fully utilizes the buffering capacity of the snow-blocking device by setting snow-blocking devices in sections at specific slopes on the roof. This allows only a portion of the snow to pass through, minimizing the impact force of the snow, ensuring that the roof structure is not damaged, and reducing damage to the building when the snow falls. It also reduces subsequent maintenance costs and ensures the safety of people or objects below.

[0058] It should be noted that the setting angle of the mounting base 120 is determined based on dynamic analysis. Taking a segment of a circular arc, the direction and angle of acceleration at the lowest point of the arc are calculated using the kinetic energy theorem, arc length, and descent height, resulting in cosθ = 2 / 3, thus obtaining a definite angle. However, the actual arc-shaped canopy is not a complete circular arc. Based on this, the angle range of acceleration is analyzed. In this embodiment, 30° to 45° is only a preferred range and may deviate somewhat from the angle range obtained from the above analysis. By trying to match the tilt angle of the base plate 121 with the direction of acceleration, it effectively plays a role in buffering, snow blocking, and deceleration.

[0059] In some embodiments, the same number of snow-blocking device assemblies 100 are provided on both sides of the central busbar of the roof. The installation position and number of snow-blocking devices are determined according to local snowfall, structural curvature, height and other factors. Generally, the length span of the profiled sheet 200 is L along the length extension direction of the crest section 210; if L≤100m, the number of snow-blocking device assemblies 100 is 2; if 100m<L≤200m, the number of snow-blocking device assemblies 100 is 4; if L>200m, the number of snow-blocking device assemblies 100 is 6.

[0060] This embodiment does not specifically limit the arrangement of the snow-blocking device assemblies 100 on both sides of the central busbar of the canopy. In some embodiments, the snow-blocking device assemblies 100 on both sides can be distributed at different heights, as long as they all meet the installation requirements. As a preferred embodiment, the snow-blocking device assemblies 100 are symmetrically arranged on the profiled plate 200 with the central busbar of the arc-shaped canopy as the reference.

[0061] like Figure 4 As shown, the snow-blocking system 1000 for the roof of the material shed provided in this embodiment has a base plate 121 of the mounting base 120 connected between two reinforcing purlins 130. The spacing of the mounting bases 120 is determined according to the stress calculation, and in this case, it is taken as 5m. At the same time, the base plate 121 of the mounting base 120 avoids the crest section 210 of the roof profiled steel sheet, and can always find the trough section 220 of the roof profiled steel sheet for installation. The base plate 121 of the mounting base 120 and the roof profiled steel sheet 200 are fixed together to the upper flange 131 of the reinforcing purlin 130 with bolts, and a water-repellent gasket is set above the base plate 121 of the mounting base 120 to prevent the roof from leaking.

[0062] The large-span arc-shaped material shed roof snow-blocking system 1000 provided in this embodiment is mainly used in the enclosed material sheds of large-span material yards in metallurgical enterprises. It can be used for snow blocking on the roof of a single large-span arc-shaped material shed, or at the junction of double-span or multi-span arc-shaped material sheds to prevent the bottom structure at the junction from being damaged by snow that slides down rapidly when the snow melts.

[0063] In summary, the snow-blocking device assembly 100 and the snow-blocking system 1000 for the roof of the material shed provided by this invention determine the installation position and quantity of the snow-blocking device assembly 100 based on local snowfall, structural curvature, height, and other factors. By segmenting the snow-blocking device assembly 100 at specific slope locations on the roof, the buffering capacity of the snow-blocking device assembly 100 is fully utilized, allowing only a portion of the accumulated snow to pass through, reducing the speed and amount of snow accumulation, minimizing the impact of the snow, ensuring that the roof structure of the material shed is not damaged, and reducing damage to the building when snow falls. Simultaneously, it reduces subsequent maintenance costs and ensures the safety of people or objects below.

[0064] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0065] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A snow-blocking device assembly, characterized in that, include, Snow protection components; At least two mounting bases are provided with mounting holes and are spaced apart along the axial direction of the snow barrier; Two reinforcing purlins are spaced apart along a first direction perpendicular to the axial direction of the snow barrier, for connection to the main structure of the building; At least one anti-instability purlin is provided between two reinforcing purlins and connects the two reinforcing purlins; The snow-blocking component is inserted into the mounting hole and connected to at least two mounting bases that are spaced apart. The mounting bases and the two reinforcing purlins are connected to the roof of the building body, and the mounting bases and the reinforcing purlins are distributed on the inner and outer sides of the roof.

2. The snow-blocking device assembly as described in claim 1, characterized in that, The mounting base includes: Base plate, used for connection with the reinforcing purlin; A side plate is provided on the base plate and has mounting holes parallel to the base plate; A reinforcing plate connects the base plate and the side plate.

3. The snow-blocking device assembly as described in claim 2, characterized in that, The side plate is perpendicular to the base plate, and the reinforcing plate is perpendicular to both the base plate and the side plate; at least two mounting holes are provided on the side plate at intervals.

4. The snow-blocking device assembly as described in claim 3, characterized in that, The side plate has four mounting holes, two vertical rows and two horizontal rows. The number of mounting bases is n, the number of snow-blocking components is n-1 groups, the number is 2 (n-1), and the two snow-blocking components in the same group are installed in two mounting holes in the same vertical row; the two adjacent groups of snow-blocking components are respectively installed in two vertical rows of mounting holes.

5. The snow-blocking device assembly as described in any one of claims 1-4, characterized in that, The snow-blocking component is a round tube, and the diameter of the mounting hole is 1-3 mm larger than the diameter of the snow-blocking component. The distance between two circular tubes in a vertical row and the distance between the lower circular tube and the base plate are d, where 30mm≤d≤80mm.

6. The snow-blocking device assembly as described in any one of claims 1-4, characterized in that, The reinforcing purlin includes two spaced-apart flanges and a web connecting the two flanges.

7. The snow-blocking device assembly as described in claim 6, characterized in that, The reinforcing purlins are Z-shaped, and the webs are perpendicular to the two flanges; the two reinforcing purlins are oriented in the same direction.

8. A snow-blocking system for a shed roof, characterized in that, include: A profiled sheet has continuous and staggered crest sections and trough sections. Along the length extension direction of the crest sections, the profiled sheet is bent to form an arc-shaped canopy. At least two sets of snow-blocking device assemblies according to any one of claims 1-7 are distributed on both sides of the central generatrix of the roof along the length extension direction of the crest section; the at least two mounting bases of each snow-blocking device assembly are spaced apart along a generatrix of the roof and are all located on the surface of the trough section. The mounting base is inclined to the bottom surface of the canopy, with an angle of 30° to 45° with the ground, and the opening faces the center line of the canopy. The reinforcing purlin is positioned corresponding to the mounting base. The mounting base and the reinforcing purlin are distributed on the inner and outer sides of the profiled plate, and the mounting base, the profiled plate, and the reinforcing purlin are fastened together.

9. The snow-blocking system for a material shed roof as described in claim 8, characterized in that, The same number of snow-blocking device assemblies are provided on both sides of the central busbar of the canopy roof; Along the length extension direction of the crest section, the length span of the profiled sheet is L; if L≤100m, the number of snow-blocking device assemblies is 2; if 100m<L≤200m, the number of snow-blocking device assemblies is 4; if L>200m, the number of snow-blocking device assemblies is 6.

10. The snow-blocking system for a material shed roof as described in claim 9, characterized in that, The snow-blocking device assembly is symmetrically arranged on the profiled plate with the central generatrix of the arc-shaped canopy as the reference.

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