Modular shed frame design method and photovoltaic shed frame

Abstract

The invention discloses a modular shed frame design method and a photovoltaic shed frame, the shed frame is used for supporting a plurality of plate bodies arranged in a matrix, and the method comprises the following steps: S1, equally dividing the length or width of each plate body according to a preset equally-divided part number to obtain an equally-divided size, and obtaining a value coefficient according to a local environment parameter and the equally-divided size; s2, respectively calculating the length of a standard purlin, the length of a cantilever purlin and the length of a supplementary purlin according to the value coefficient and the equal division size; and S3, at least one combination mode of the standard purlins, the cantilever purlins and the supplementary purlins is obtained according to the column number of the multiple plate bodies arranged in the matrix, and the standard purlins, the cantilever purlins and the supplementary purlins are combined to form a cross beam of the shed frame. According to the modular shed frame design method, the modular design thought is adopted, modular design is conducted on the purlins based on the length or width of the plate bodies, flexibility is high, meanwhile, a certain number of combination selections are achieved, and the shed frame design cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a modular shed design method and a photovoltaic shed. Background Art

[0002] With the development of photovoltaic technology, household photovoltaic power generation has been promoted. Household photovoltaic power generation requires solar panels to be arranged on the roof, wall or ground in the yard. The electricity generated can be used at home or sold to the grid to increase income. Photovoltaic building integration (BIPV) is a technology that integrates solar power generation products on buildings. The BIPV business of household photovoltaic power generation in a region has the characteristics of small scale, large quantity and strong personalization, which leads to high requirements for BIPV design and assembly module supply for household photovoltaic power generation. BIPV design must meet the design requirements of the regional environment for photovoltaic trellises and the site requirements for the layout of photovoltaic products for each household. The current photovoltaic trellis design adopts a separate design method for each small household photovoltaic power generation project in the region, which leads to a long time for photovoltaic trellis design, and the construction size of each small project is irregular. In the process of converting the processing drawings, a huge workload will be generated, resulting in a high error rate in the production of BIPV assembly modules, which reduces the progress of household photovoltaic power generation promotion and layout, and increases the cost of household photovoltaic power generation promotion and layout. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a modular shelf design method and a photovoltaic shelf to solve the problems of difficulty and high cost in the existing BIPV module design.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a modular shelf design method, the shelf is used to support multiple panels arranged in a matrix, comprising the following steps: S1: Divide the length or width of the plate into equal parts according to a preset number of equal parts to obtain equal-division sizes, and obtain a value coefficient according to local environmental parameters and the equal-division sizes; S2: Calculate the length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin respectively according to the value coefficient and the equally divided size; S3: obtaining at least one combination of the standard purlin, the cantilever purlin and the supplementary purlin according to the number of columns of the plurality of plate bodies arranged in a matrix, and forming a crossbeam of the scaffolding by combining the standard purlin, the cantilever purlin and the supplementary purlin.

[0005] Furthermore, in step S1, the length or width of the plate is divided into equal parts to obtain equal-division sizes, and a coefficient is obtained according to local environmental parameters and the equal-division sizes, including the steps of: S11, determining a preset number of equal parts, and dividing the length or width of the plate into equal parts according to the preset number of equal parts to obtain the equal-division size; S12. Calculate the maximum purlin simply supported span based on local environmental parameters, purlin allowable strength and purlin allowable deflection; S13. Calculate the value coefficient according to the maximum purlin simply supported span and the equally divided size; wherein the value coefficient is an integer.

[0006] Furthermore, in step S13, the value coefficient is calculated according to the maximum purlin simply supported span and the equally divided size, including: The value coefficient is calculated according to the following formula:

[0007] Wherein, a is the value coefficient, is the maximum purlin simply supported span, For the said equal division size, is the length or width of the plate, n is the preset number of equal parts, and Int is the rounding function.

[0008] Furthermore, the environmental parameters include: local wind pressure, local snow pressure, and maximum allowable height of the scaffolding.

[0009] Furthermore, in step S2, respectively calculating the length of the standard purlin, the length of the cantilever purlin, and the length of the supplementary purlin according to the value coefficient and the equally divided size includes: The length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin are calculated respectively according to the following formulas:

[0010] Wherein, L1 is the length of the standard purlin, a is the value coefficient, For the said equal division size, is the length or width of the plate, n is the number of equal parts, is the length of the cantilever purlin, b is the first integer preset value, To supplement the length of the purlin, c is a second integer preset value.

[0011] Furthermore, the crossbeam includes a middle portion and a cantilever portion, the middle portion includes the standard purlin and / or the supplementary purlin, and the cantilever portion is the standard purlin, the cantilever purlin or the supplementary purlin.

[0012] Furthermore, the connection position between the purlin of the cantilevered portion and the side column of the scaffolding can be adjusted within a preset adjustment range.

[0013] Furthermore, the method further includes step S4: selecting a combination of the standard purlin, the cantilever purlin and the supplementary purlin as a crossbeam assembly, and designing the inclined beams and pillars of the scaffolding according to the obstacles of the installation site of the crossbeam assembly and the scaffolding.

[0014] Another object of the present invention is to provide a photovoltaic trellis designed according to the above-mentioned modular trellis design method, wherein the photovoltaic trellis is used to support a plurality of photovoltaic panels arranged in a matrix, and comprises a plurality of inclined beams, a plurality of pillars and a plurality of cross beams, wherein the inclined beams are arranged on the pillars, and the cross beams are arranged on the inclined beams, and the cross beams comprise at least one of a standard purlin, a cantilever purlin and a supplementary purlin.

[0015] Furthermore, the crossbeam includes a middle portion and a cantilever portion, the middle portion includes the standard purlin and / or the supplementary purlin, and the cantilever portion is the standard purlin, the cantilever purlin or the supplementary purlin.

[0016] The beneficial effects of the present invention are as follows: the modular shed design method provided by the present invention adopts a modular design concept, and performs modular design on the purlins based on the length or width of the board body to obtain three types of purlins, namely standard purlins, cantilever purlins and supplementary purlins, and the crossbeams of the shed are formed by a combination of the three types of purlins. The method can realize the modular design of the purlins of the shed, and it has high flexibility while realizing a certain number of combination options. The setting of the three types of purlins can meet the personalized construction needs of the sheds for the board bodies of the same width or length in a single area. Its application in building photovoltaic sheds can reduce the difficulty of modular design of photovoltaic sheds, improve the design efficiency of photovoltaic sheds, simplify the structural complexity of photovoltaic sheds, reduce the processing cost of crossbeams and purlins of photovoltaic sheds, and at the same time reduce the processing error rate of crossbeams and purlins of photovoltaic sheds. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A flowchart of the steps of the modular scaffolding design method of the present invention; Figure 2 This is a schematic structural diagram of the photovoltaic scaffolding of the present invention in one embodiment; Figure 3 The standard purlin, cantilever purlin and supplementary purlin of the present invention are schematically shown; wherein, Figure 3 (a) schematically shows the standard purlin of the present invention, Figure 3 (b) schematically shows the cantilever purlin of the present invention, Figure 3 (c) schematically shows the supplementary purlin of the present invention; Figure 4 The structural diagram of the cantilevered portion of the beam of the present invention is schematically shown; Figure 5The structure diagram of the photovoltaic panel array and the beam is schematically shown; Figure 5 (a) Schematic diagram showing the structure of the photovoltaic array flush with the edge beam. Figure 5 (b) Schematic diagram showing the structure of the photovoltaic panel array cantilevered relative to the beam; Figure 6 The structure diagram of the beam assembly composed of three different combinations is schematically shown when the number of columns of the photovoltaic panel array N=5.

[0018] Description of labels: 1. Standard purlin; 2. Cantilever purlin; 21. Column spacing section; 22. Cantilever section; 3. Supplementary purlin; 4. Crossbeam; 41. Middle section; 42. Cantilever section; 5. Pillar; 6. Inclined beam; 7. Middle column; 8. Side column; 9. Photovoltaic panel array. DETAILED DESCRIPTION

[0019] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0020] Please refer to Figures 1 to 6 A modular scaffolding design method is disclosed, wherein the scaffolding is used to support a plurality of panels arranged in a matrix, comprising the following steps: S1: Divide the length or width of the plate into equal parts according to a preset number of equal parts to obtain equal-division sizes, and obtain a value coefficient according to local environmental parameters and the equal-division sizes; S2: Calculate the length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin respectively according to the value coefficient and the equally divided size; S3: obtaining at least one combination of the standard purlin, the cantilever purlin and the supplementary purlin according to the number of columns of the plurality of plate bodies arranged in a matrix, and forming a crossbeam of the scaffolding by combining the standard purlin, the cantilever purlin and the supplementary purlin.

[0021] From the above description, it can be seen that the beneficial effects of the present invention are: the modular shed design method provided by the present invention adopts a modular design concept, and modularly designs the length of the purlin based on the size of the board body to obtain purlins of three length sizes: standard purlin, cantilever purlin, and supplementary purlin, and the crossbeams of the shed are formed by a combination of the three purlins. This method can realize the modular design of the purlins of the shed. While it is highly flexible, it realizes a certain number of combination options. Through the setting of the three purlins, it can meet the personalized construction needs of the sheds used for boards of the same width or length in a single area. Its application in building photovoltaic sheds can reduce the difficulty of modular design of photovoltaic sheds, improve the design efficiency of photovoltaic sheds, simplify the structural complexity of photovoltaic sheds, reduce the processing cost of photovoltaic shed beams and purlins, and at the same time reduce the error rate of processing beams and purlins of photovoltaic sheds.

[0022] Furthermore, in step S1, the length or width of the plate is divided into equal parts to obtain equal-division sizes, and a coefficient is obtained according to local environmental parameters and the equal-division sizes, including the steps of: S11, determining a preset number of equal parts, and dividing the length or width of the plate into equal parts according to the preset number of equal parts to obtain the equal-division size; S12. Calculate the maximum purlin simply supported span based on local environmental parameters, purlin allowable strength and purlin allowable deflection; S13. Calculate the coefficient according to the maximum purlin simply supported span and the equally divided size; wherein the coefficient is an integer.

[0023] Furthermore, in the step S13, the value coefficient is calculated according to the maximum purlin simply supported span and the equally divided size, including: The value coefficient is calculated according to the following formula:

[0024] Wherein, a is the value coefficient, is the maximum purlin simply supported span, For the said equal division size, is the length or width of the plate, n is the preset number of equal parts, and Int is the rounding function.

[0025] Furthermore, the environmental parameters include: local wind pressure, local snow pressure, maximum allowable height of the scaffolding, etc.

[0026] From the above description, it can be seen that the scaffolding is designed according to local environmental parameters and has high safety performance.

[0027] Furthermore, in step S2, respectively calculating the length of the standard purlin, the length of the cantilever purlin, and the length of the supplementary purlin according to the value coefficient and the equally divided size includes: The length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin are calculated respectively according to the following formulas:

[0028] Wherein, L1 is the length of the standard purlin, a is the value coefficient, For the said equal division size, is the length or width of the plate, n is the number of equal parts, is the length of the cantilever purlin, b is the first integer preset value, To supplement the length of the purlin, c is a second integer preset value.

[0029] From the above description, it can be known that the lengths of the three purlins are calculated according to the local environmental parameters and the equally divided size, so that the length / width of the three purlins and the board body can be counted in n-base; wherein, the length of the standard purlin is the length of the purlin of the most economical simply supported span of the scaffolding applied to the board body of this length / width locally; the cantilever span load of the cantilever purlin has a balancing effect, and the length of the cantilever purlin can be b module lengths longer than the length of the standard purlin; the supplementary purlin is used to make up the remainder of the total length during the modular assembly, so the length of the supplementary purlin is c module lengths less than the length of the standard purlin. For the convenience of calculation, the first preset integer value b and the second preset integer value c can be 1 or 2.

[0030] Furthermore, the crossbeam includes a middle portion and a cantilever portion, the middle portion includes the standard purlin and / or the supplementary purlin, and the cantilever portion is the standard purlin, the cantilever purlin or the supplementary purlin.

[0031] From the above description, it can be seen that the cantilever purlin is long, and its economy and flexibility are better than those of the standard purlin 1 and the supplementary purlin 3. However, when the middle part 41 of the cantilever purlin is used as a simply supported beam of the scaffolding, its span exceeds the limit. Therefore, the cantilever purlin is used for the arrangement of the cantilever part 42 of the beam 4, while the standard purlin 1 and the supplementary purlin 3 can take into account the arrangement of the middle part 41 and the cantilever part 42 of the beam 4 at the same time.

[0032] Furthermore, the connection position between the purlin of the cantilevered portion 42 and the side column of the scaffolding can be adjusted within a preset adjustment range.

[0033] From the above description, it can be seen that the cantilever span load of the cantilever part of the beam has a balancing effect, and the force model of the purlin of the cantilever part of the beam has a better bearing capacity than the simply supported beam force of the middle part of the beam. Therefore, the side columns connected to the purlin of the cantilever part of the beam can meet the structural requirements. The connection position of the purlin of the cantilever part of the beam and the side columns can be adjusted within a certain range, which can improve the scaffolding's ability to avoid obstacles in the installation environment and improve the flexibility of scaffolding installation. Standard purlins and supplementary purlins are used in cantilevered parts. Due to length restrictions, they can only move inward, affecting the use space of column spacing and poor adjustability. Therefore, setting the cantilever part of the beam as a cantilever purlin can improve the adjustability of the scaffold, and cantilever purlins can be preferentially used as the purlins of the cantilever part of the beam.

[0034] Furthermore, the method further includes step S4: selecting a combination of the standard purlin, the cantilever purlin and the supplementary purlin as a crossbeam assembly, and designing the inclined beams and pillars of the scaffolding according to the obstacles of the installation site of the crossbeam assembly and the scaffolding.

[0035] From the above description, it can be seen that there are still many ways to arrange standard purlins, cantilever purlins and supplementary purlins in the beam combination, which can be flexibly applied to match the scaffolding installation environment to ensure that the formed inclined beams and column grids can flexibly avoid obstacles in the installation environment.

[0036] Another object of the present invention is to provide a photovoltaic trellis designed according to the above-mentioned modular trellis design method, wherein the photovoltaic trellis is used to support a plurality of photovoltaic panels arranged in a matrix, and comprises a plurality of inclined beams 6, a plurality of pillars 5 and a plurality of cross beams 4, wherein the inclined beams 6 are arranged on the pillars 5, and the cross beams 4 are arranged on the inclined beams 6, and the cross beams 4 comprise at least one of a standard purlin 1, a cantilever purlin 2 and a supplementary purlin 3.

[0037] From the above description, it can be seen that the photovoltaic shed described in the present invention has at least all the beneficial effects of the above-mentioned modular shed design method, and its installation methods are rich and diverse. The number of parts of the crossbeam 4 purlins of the photovoltaic shed is small. In a single area, only three types of purlins, namely standard purlin 1, cantilever purlin 2 and supplementary purlin 3, need to be prepared to meet the personalized construction needs of the shed used for the board body of the same width or length in the area.

[0038] Furthermore, the cross beam 4 includes a middle portion 41 and a cantilever portion 42 , the middle portion 41 includes the standard purlin 1 and / or the supplementary purlin 3 , and the cantilever portion 42 is the standard purlin 1 , the cantilever purlin 2 or the supplementary purlin 3 .

[0039] From the above description, it can be seen that the cantilever purlin 2 is long, and the economy and flexibility of the cantilever purlin 2 are better than the standard purlin 1 and the supplementary purlin 3. However, when the middle part 41 of the cantilever purlin 2 is used as a simply supported beam of the scaffolding, its span exceeds the limit. Therefore, the cantilever purlin 2 is used for the arrangement of the cantilever part 42 of the beam 4, while the standard purlin 1 and the supplementary purlin 3 can take into account the arrangement of the middle part 41 and the cantilever part 42 of the beam 4 at the same time.

[0040] Embodiment 1 Please refer to Figure 1 The first embodiment of the present invention is to provide a modular scaffolding design method, which includes the following steps: S1: Divide the length or width of the plate into equal parts according to a preset number of equal parts to obtain equal-division sizes, and obtain a value coefficient according to local environmental parameters and the equal-division sizes; S2: Calculate the length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin respectively according to the value coefficient and the equally divided size; S3: obtaining at least one combination of the standard purlin, the cantilever purlin and the supplementary purlin according to the number of columns of the plurality of plate bodies arranged in a matrix, and forming a crossbeam of the scaffolding by combining the standard purlin, the cantilever purlin and the supplementary purlin.

[0041] In the above step S1, the length or width of the plate is divided into equal parts to obtain equal-division sizes, and a coefficient is obtained according to local environmental parameters and the equal-division sizes, including the steps of: S11, determining a preset number of equal parts, and dividing the length or width of the plate into equal parts according to the preset number of equal parts to obtain the equal-division size; S12. Calculate the maximum purlin simply supported span based on local environmental parameters, purlin allowable strength and purlin allowable deflection; S13. Calculate the coefficient according to the maximum purlin simply supported span and the equally divided size; wherein the coefficient is an integer.

[0042] Specifically, in the above step S13, the value coefficient is calculated according to the maximum purlin simply supported span and the equally divided size, including: The value coefficient is calculated according to the following formula:

[0043] Wherein, a is the value coefficient, is the maximum purlin simply supported span, For the said equal division size, is the length or width of the plate, n is the preset number of equal parts, and Int is the rounding function.

[0044] In this embodiment, in the above step S2, respectively calculating the length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin according to the value coefficient and the equally divided size includes: The length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin are calculated respectively according to the following formulas:

[0045] Wherein, L1 is the length of the standard purlin, a is the value coefficient, For the said equal division size, is the length or width of the plate, n is the number of equal parts, is the length of the cantilever purlin, b is the first integer preset value, To supplement the length of the purlin, c is a second integer preset value.

[0046] In this embodiment, the lengths of the three purlins and the length or width of the plate body can be calculated using an n-base method; the n-base technical method means that the number on each digit is calculated by increasing by one digit every n digits.

[0047] Preferably, the preset number of equal divisions n can be set to 3 or 4, so that the scaffold can be designed by dividing the size of the board into three or four equal divisions, so that the length or width of the three purlins and the board can be counted in ternary or quaternary system, reducing the difficulty of calculation, ensuring the feasibility of setting the length of the supplementary purlin, and ensuring the feasibility of supplementing the remainder segment using the equal division modulus. Of course, in some embodiments, when the length of the supplementary purlin can be appropriately selected to meet the supplement of the remainder segment, the preset number of equal divisions n can be set to any integer.

[0048] In detail, the cantilever purlin 2 is a length of b modules added to the length of the standard purlin 1, and correspondingly, the supplementary purlin 3 is a length of c modules reduced from the length of the standard purlin 1. Preferably, the first preset integer value b and the second preset integer value c can be specifically set to 1 or 2 for ease of calculation.

[0049] Please refer to Figure 2 In this embodiment, the cross beam 4 includes a middle portion 41 and a cantilever portion 42, the middle portion 41 includes a standard purlin 1 and / or a supplementary purlin 3, and the cantilever portion 42 is a standard purlin 1, a cantilever purlin 2 or a supplementary purlin 3. The connection position between the purlin 42 of the cantilever portion and the side column 8 of the scaffold can be adjusted within a preset adjustment range.

[0050] Embodiment 2 Please refer to Figures 2 to 6 The second embodiment of the present invention is to apply the modular shelf design method provided in the first embodiment to design a photovoltaic shelf in a region. The second embodiment of the present invention is: First, query the local wind pressure, local snow pressure, maximum allowable height of the scaffolding and other environmental parameters, and then combine the allowable strength and allowable deflection of the purlin to calculate the maximum purlin simply supported span L max In the second embodiment, the maximum purlin simply supported span in the area is calculated to be 4336 mm. In the second embodiment, the preset number of equal parts n=3 is set, and the photovoltaic scaffolding for photovoltaic panels with a length of 2283 mm (including the seam length) is designed in the second embodiment. The coefficient a is calculated according to the following formula:

[0051] According to the coefficient and the length of the photovoltaic panel, the most economical purlin length of the photovoltaic scaffolding applied to the photovoltaic panel of this length can be calculated as follows: , take the most economical purlin length mentioned above as the length of the standard purlin.

[0052] It is easy to understand that in the second embodiment, the length of the standard purlin and the length of the photovoltaic panel can be counted in ternary system. The length of the standard purlin can be recorded as In the second embodiment, if the length of the cantilever purlin is the length of the standard purlin plus a module length, the length of the cantilever purlin can be recorded as ; Please refer to Figure 3 The length of the column distance section 21 of the cantilever purlin 2 is consistent with the length of the standard purlin. , the length of the cantilever section 22 of the cantilever section 2 is .

[0053] The length of the supplementary purlin is the length of the standard purlin minus one module length, so the length of the supplementary purlin can be recorded as The function of the supplementary purlin is to solve the remainder of the total length of the modular bottle.

[0054] The cross beam 4 includes a middle portion 41 and a cantilever portion 42 . The middle portion 41 includes a standard purlin 1 and / or a supplementary purlin 3 . The cantilever portion 42 is a standard purlin 1 , a cantilever purlin 2 or a supplementary purlin 3 .

[0055] The cantilever span load of the purlin in the cantilevered part has a balancing effect, and the force model of the purlin in the middle part is consistent with the force model of the simply supported beam. The bearing capacity of the force model of the purlin in the cantilevered part is better than that of the simply supported force model of the purlin in the middle part. Therefore, under the condition of meeting the structural and bearing performance, the side column connected to the purlin in the cantilevered part can move within a certain range, and the cantilevered part in the beam can improve the flexibility of the photovoltaic shed to avoid obstacles in the installation environment.

[0056] Standard purlins and supplementary purlins are used in cantilevered parts. Due to length limitations, they can only move inwards, affecting the usable space between columns and having poor adjustability. Therefore, cantilever purlins can be preferentially used as purlins for the cantilevered part of the beam.

[0057] When designing a photovoltaic shed, the total length of the photovoltaic panel array 9 is a multiple of the length of a single photovoltaic panel, and the length L1 of the standard purlin 1, the length L2 of the cantilever purlin 2, the length L3 of the supplementary purlin 3 and the length of a single photovoltaic panel can be calculated using the ternary system, and all contain a common divisor L pv / n, therefore, the combination of standard purlins, cantilever purlins and supplementary purlins can complete the layout design of the beams of all photovoltaic trellises used for photovoltaic panels of this length in the area.

[0058] In detail, the photovoltaic trellis designed in the second embodiment includes a plurality of inclined beams 6, a plurality of pillars 5 and a plurality of cross beams 4, wherein the inclined beams 6 are arranged on the pillars 5, and the cross beams 4 are arranged on the inclined beams 6, and the cross beams 4 include at least one of a standard purlin 1, a cantilever purlin 2 and a supplementary purlin 3.

[0059] Please refer to Figure 5(a) When the photovoltaic panel array 9 is set on the photovoltaic scaffold, the edge of the photovoltaic panel array can be flush with the beam 4. In this case, the total length of the beam 4 is equal to the total length of the photovoltaic panel array. When the number of columns of the photovoltaic panel array is N, the total length of the beam 4 is set to N*L. pv .

[0060] Please refer to Figure 5 (b) The edge of the photovoltaic panel array 9 can also extend relative to the edge of the beam 4, so that the photovoltaic panel array is cantilevered relative to the beam 4, and the cantilevered length of one side of the photovoltaic panel array relative to the beam 4 is L. pv / 6, the total cantilever length of both sides of the photovoltaic panel array relative to the beam 4 is L pv / 3, that is 0.1L pv , when the number of columns of the photovoltaic panel array is N, the total length of the beam 4 is set to N*L pv -L pv / 3.

[0061] Based on the above analysis, it can be known that all the crossbeams 4 of the photovoltaic trellises used for the above photovoltaic panels in the region can be formed by a combination of a standard purlin 1, a cantilever purlin 2 and a supplementary purlin 3.

[0062] As an example, this second embodiment lists all the combinations of the beams 4 when the number of columns of the photovoltaic panel array is 3 to 8:

[0063] Among them, the cantilever purlin is long, and its economy and flexibility are better than those of standard purlin and supplementary purlin. However, when the cantilever purlin is used in the middle part as a simply supported beam of the scaffolding, its span exceeds the limit. Therefore, the cantilever purlin is used for the arrangement of the cantilever part of the beam, while the standard purlin and supplementary purlin can take into account the arrangement of the middle part and the cantilever part of the beam at the same time.

[0064] Please refer to further Figure 6 , the figure schematically shows that the beam 4 components are composed of three different combinations when the number of columns of the photovoltaic panel array N=5, Figure 6 (a) shows a bracket for a photovoltaic panel array with 5 rows formed by combining a standard purlin 1, a supplementary purlin 3 and a cantilever purlin 2; Figure 6 (b) shows a bracket for a photovoltaic panel array with 5 rows formed by combining three standard purlins 1; Figure 6 (c) shows a bracket for a photovoltaic panel array with 5 columns formed by combining two supplementary purlins 3 and one cantilever purlin 2.

[0065] In the actual installation process of the photovoltaic shed, the spatial position of the supplementary purlin 3 and the standard purlin 1 can be swapped and adjusted according to the obstacles at the installation site; the cantilevered part 42 of the beam 4 has a balancing effect on the cantilever span load, so the connection position of the purlin of the cantilevered part 42 and the side column 8 of the shed can be adjusted within a preset adjustment range. The modular shed design method has high flexibility in avoiding obstacles at the installation site.

[0066] Please refer to Figure 4 In the second embodiment, the cantilevered part of the beam is taken as an example of a cantilevered purlin. In the second embodiment, the preset adjustment range mentioned above can be determined according to the following steps: according to the local wind pressure, snow pressure and the maximum allowable height of the scaffolding, the allowable mid-span length of the cantilevered purlin can be calculated to determine C1, and the allowable cantilever length can be calculated to determine C2; ​​the position where the inter-column span between the side column 8 and the middle column 7 is the standard purlin spacing L1 is taken as the moving origin of the side column 8, and the direction in which the side column 8 moves closer to the middle column 7 is taken as the negative direction. The side column 8 can move within the following range: [C2-L1, C1-L1].

[0067] Standard purlins and supplementary purlins are used for cantilever sections. Due to length limitations, they can only move inwards, which affects the usable space between columns and has poor adjustability. Therefore, cantilever purlins are preferably used as purlins for the cantilevered part of the beam.

[0068] As an example, when the length of the standard purlin 1 is 3805mm, C1 is 4235mm, and C2 is 3525mm, one end of the cantilever purlin 2 is connected to the middle column 7, and the position where the inter-column span between the side column 8 and the middle column 7 is equal to the length of the standard purlin 1 is used as the moving origin of the side column 8, and the direction in which the side column 8 approaches the middle column 7 is used as the negative direction of movement. The preset adjustment range of the side column 8 is [-280, +430].

[0069] In summary, the modular shed design method provided by the present invention adopts a modular design concept, and performs modular design on the length of the purlin based on the size of the board body to obtain purlins of three length sizes: standard purlin, cantilever purlin, and supplementary purlin, and the crossbeams of the shed are formed by a combination of the three purlins. This method can realize the modular design of the purlins of the shed, and has high flexibility. The setting of the three purlins can meet the personalized construction needs of the sheds used for the board body of the same width or length in a single area. Its application in building photovoltaic sheds can reduce the difficulty of modular design of photovoltaic sheds, improve the design efficiency of photovoltaic sheds, simplify the structural complexity of photovoltaic sheds, reduce the purlin processing cost of the crossbeams of the photovoltaic shed, and at the same time reduce the error rate of purlin processing of the crossbeams of the photovoltaic shed.

[0070] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A modular scaffolding design method, characterized in that: The scaffold is used to support a plurality of panels arranged in a matrix, and includes the following steps: S1: Divide the length or width of the plate into equal parts according to a preset number of equal parts to obtain equal-division sizes, and obtain a value coefficient according to local environmental parameters and the equal-division sizes; S2: Calculate the length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin respectively according to the value coefficient and the equally divided size; S3: obtaining at least one combination of the standard purlin, the cantilever purlin and the supplementary purlin according to the number of columns of the plurality of plate bodies arranged in a matrix, and forming a crossbeam of the scaffolding by combining the standard purlin, the cantilever purlin and the supplementary purlin.

2. The modular scaffolding design method according to claim 1, characterized in that: In the step S1, the length or width of the plate is divided into equal parts to obtain equal-division sizes, and a value coefficient is obtained according to local environmental parameters and the equal-division sizes, including the steps of: S11, determining a preset number of equal parts, and dividing the length or width of the plate into equal parts according to the preset number of equal parts to obtain the equal-division size; S12. Calculate the maximum purlin simply supported span based on local environmental parameters, purlin allowable strength and purlin allowable deflection; S13. Calculate the coefficient according to the maximum purlin simply supported span and the equally divided size; wherein the coefficient is an integer.

3. The modular scaffolding design method according to claim 2, characterized in that: In the step S13, the value coefficient is calculated according to the maximum purlin simply supported span and the equally divided size, including: The value coefficient is calculated according to the following formula: Wherein, a is the value coefficient, is the maximum purlin simply supported span, For the said equal division size, is the length or width of the plate, n is the preset number of equal parts, and Int is the rounding function.

4. The modular scaffolding design method according to claim 1, characterized in that: The environmental parameters include: local wind pressure, local snow pressure, and maximum allowable height of the scaffolding.

5. The modular scaffolding design method according to claim 1, characterized in that: In the step S2, respectively calculating the length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin according to the value coefficient and the equally divided size includes: The length of the standard purlin, the length of the cantilever purlin and the length of the supplementary purlin are calculated respectively according to the following formulas: Wherein, L1 is the length of the standard purlin, a is the value coefficient, For the said equal division size, is the length or width of the plate, n is the number of equal parts, is the length of the cantilever purlin, b is the first preset integer value, To supplement the length of the purlin, c is a second preset integer value.

6. The modular scaffolding design method according to claim 1, characterized in that: The cross beam comprises a middle portion and a cantilever portion, the middle portion comprises the standard purlin and / or the supplementary purlin, and the cantilever portion is the standard purlin, the cantilever purlin or the supplementary purlin.

7. The modular shelf design method according to claim 6, characterized in that: The connection position between the purlin of the cantilevered part and the side column of the scaffold can be adjusted within a preset adjustment range.

8. The modular scaffolding design method according to claim 1, characterized in that: The method further comprises step S4: selecting a combination of the standard purlin, the cantilever purlin and the supplementary purlin as a crossbeam assembly, and designing the inclined beams and pillars of the scaffolding according to obstacles at the installation site of the crossbeam assembly and the scaffolding.

9. A photovoltaic scaffolding designed according to the modular scaffolding design method according to any one of claims 1 to 8, characterized in that: The photovoltaic scaffolding is used to support multiple photovoltaic panels arranged in a matrix, and includes a plurality of inclined beams, a plurality of pillars and a plurality of cross beams. The inclined beams are arranged on the pillars, and the cross beams are arranged on the inclined beams. The cross beams include at least one of a standard purlin, a cantilever purlin and a supplementary purlin.

10. The photovoltaic scaffolding according to claim 9, characterized in that: The cross beam comprises a middle portion and a cantilever portion, the middle portion comprises the standard purlin and / or the supplementary purlin, and the cantilever portion is the standard purlin, the cantilever purlin or the supplementary purlin.

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