Detachable stiffening support for photovoltaic support

Abstract

The utility model discloses a detachable stiffening support used for a photovoltaic support. The photovoltaic support comprises an oblique beam. A plurality of purline supporting point positions are arranged on each oblique beam, a purline support is arranged at each purline supporting point position, and a purline is arranged on each purline support; a stiffening support is arranged at at least one purline supporting point; the stiffening support comprises a section of short thin-wall C-shaped steel with the outer contour matched with the inner contour of the oblique beam, the short thin-wall C-shaped steel comprises a C-shaped steel web, a C-shaped steel upper side plate and a C-shaped steel lower side plate, the C-shaped steel upper side plate and the C-shaped steel lower side plate are located on the upper side and the lower side of the C-shaped steel web respectively, and the short thin-wall C-shaped steel is tightly attached to the inner side of the oblique beam in a matched mode. A stiffening rib is arranged in the center of the short thin-wall C-shaped steel, and the stiffening rib is vertically connected with the C-shaped steel web, the C-shaped steel upper side plate and the C-shaped steel lower side plate; the short thin-wall C-shaped steel, the oblique beam, the purlin support and the purlin are installed and connected in a bolt mode. According to the scheme, the stability performance of the structure can be improved, and meanwhile the steel consumption of the structure is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar photovoltaic technology, and in particular relates to a detachable stiffening support for a photovoltaic bracket. Background Art

[0002] The components used to achieve photoelectric conversion in photovoltaic power stations are called photovoltaic modules. Photovoltaic brackets are steel brackets used to support photovoltaic modules. Photovoltaic brackets are generally arranged in the open air on a large open space. Photovoltaic brackets are generally divided into fixed brackets, fixed adjustable brackets, and tracking brackets. Fixed photovoltaic brackets are generally divided into single-column photovoltaic brackets and double-column photovoltaic brackets, both of which are the most commonly used forms of photovoltaic brackets with wide application.

[0003] The double-column photovoltaic bracket is the earliest form of photovoltaic bracket adopted. It has good stability, low steel consumption, simple construction, and is the most economical bracket form. The double-column photovoltaic bracket consists of purlins that directly support photovoltaic components, diagonal beams, round steel cross supports stretched between diagonal beams, double columns, a group of herringbone braces in the cross section of the horizontal double columns, and round steel cross column supports stretched on the higher column side of the longitudinal double columns. When calculating the diagonal beam of the double-column photovoltaic bracket, its upper flange is constrained by the purlins and purlin brackets, and its calculated length can usually be selected as the purlin spacing. As for the lower flange of the diagonal beam, since only the double columns have the ability to transmit longitudinal horizontal forces, the calculated length of its lower flange is actually the spacing between the two columns. As a thin-walled hemmed channel steel with extremely low steel consumption, since the steel structure is usually controlled by stability, if it is selected according to its actual calculated length, it will inevitably cause excessive steel consumption. For photovoltaic power plants with a large number of brackets, it will cost a huge economic price. If the calculated length is forcibly reduced by using the purlin as a support simply because the height of the inclined beam is not large, it will obviously cause potential risks in use. For example, for thin-walled curled channel steel purlins of the same low height, the upper part has a top stiffness formed by full-paved components that is more effective than the inclined beam, while as a secondary beam, the lower flange still needs to rely on an effective system formed by tie rods, struts, etc. to reduce the calculated length. According to the layout of the photovoltaic bracket, if an effective support system is required on the lower flange of the inclined beam, in addition to the cross tie rods, an effective pressure transmission system must also be provided, which is obviously costly and difficult to achieve. It is obviously inappropriate and inconsistent with the regulations to completely ignore the actual support conditions of the lower flange of the inclined beam as the main beam and forcibly reduce the calculated length of the lower flange according to the top purlin.

[0004] Single column is also one of the earliest forms of fixed photovoltaic support. With the large-scale launch of agricultural photovoltaic complementation, forest photovoltaic complementation, and fish photovoltaic complementation projects in recent years, its proportion in fixed supports has become increasingly higher. Single column photovoltaic support consists of purlins that directly support photovoltaic components, inclined beams, round steel cross supports tensioned between inclined beams, and single columns. The calculation method of the upper flange of the inclined beam of the single column photovoltaic support is the same as that of the upper flange of the double column photovoltaic support. Since the longitudinal force transmission support of the lower flange is only the middle single column, the actual calculated length of the lower flange out of the plane should be considered according to the cantilever distance from the column to the beam edge, which is about twice the half of the inclined beam, that is, about the actual length of the inclined beam. The actual calculated length of the lower flange is larger than that of the double column. If it is selected according to the actual situation, it will inevitably cause greater steel consumption. Similar to the case of the double column, it is difficult for the lower flange to form an effective support system. If its actual support is ignored, the risk of instability is greater.

[0005] When the fixed and adjustable basic structure is set up in the same structural form as the fixed bracket, the problems existing in the inclined beam are basically the same as those of the fixed bracket, and will not be elaborated here. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a detachable stiffening support for a photovoltaic bracket, to solve the problem of high cost or risk of existing technical solutions, to form an effective force transmission path in a very simple and minimally consuming manner, to greatly reduce the calculated length of the inclined beam, thereby improving the reliability of the structure and reducing the steel consumption of the structure.

[0007] According to the technical solution of the utility model, the utility model provides a detachable stiffening support for a photovoltaic bracket, the photovoltaic bracket includes an inclined beam; the inclined beam includes an inclined beam web and an inclined beam upper flange and an inclined beam lower flange respectively located on the upper and lower sides of the inclined beam web; each inclined beam has a plurality of purlin support points, a purlin support is provided at each purlin support point, and a purlin is provided on the purlin support; a stiffening support is provided at at least one purlin support point; the stiffening support includes a section of outer contour and an inner wheel of the inclined beam The short thin-walled C-shaped steel has a matching profile, and the short thin-walled C-shaped steel includes a C-shaped steel web and a C-shaped steel upper side plate and a C-shaped steel lower side plate respectively located on the upper and lower sides of the C-shaped steel web. The short thin-walled C-shaped steel is matched and tightly attached to the inner side of the inclined beam; a stiffening rib is arranged at the center position of the short thin-walled C-shaped steel, and the stiffening rib is plate-shaped and perpendicular to the length direction of the inclined beam. The stiffening rib is vertically connected to the C-shaped steel web, the C-shaped steel upper side plate, and the C-shaped steel lower side plate; the short thin-walled C-shaped steel, the inclined beam, the purlin bracket and the purlin are installed and connected by bolts.

[0008] Furthermore, the short thin-walled C-shaped steel is provided with bolt mounting holes on the C-shaped steel web, the C-shaped steel upper side plate and the C-shaped steel lower side plate on both sides of the stiffening rib, and corresponding bolt mounting holes are also provided on the inclined beam, the purlin support and the purlin, and bolts are installed in the bolt mounting holes.

[0009] Preferably, for a single-column photovoltaic bracket, a stiffening support is provided on the inner side of the inclined beam at the purlin support points at the two outer purlins; for a double-column photovoltaic bracket, a stiffening support is provided on the inner side of the inclined beam at the purlin support points at the two inner purlins.

[0010] According to some embodiments, a single column is provided in the middle of each inclined beam, and a first inclined brace and a second inclined brace are connected to the single column, and the first inclined brace and the second inclined brace are respectively connected to the upper part and the lower part of the inclined beam.

[0011] According to some other embodiments, a first column and a second column are respectively provided at the upper and lower parts of each inclined beam, and the first column and the second column are respectively connected to a third diagonal brace and a fourth diagonal brace on opposite sides, and the third diagonal brace and the fourth diagonal brace are both connected to the middle part of the inclined beam.

[0012] Preferably, a short thin-walled C-shaped steel is provided in the middle of the inclined beam.

[0013] Furthermore, there are multiple inclined beams distributed side by side in the transverse direction, the length direction of the purlin is horizontal and perpendicular to the length direction of the inclined beam, and the multiple purlins are distributed side by side along the inclination direction of the inclined beam.

[0014] According to some embodiments, each inclined beam is provided with four purlin supporting points, and the four purlin supporting points are distributed along the length direction of the inclined beam.

[0015] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0016] 1. This scheme provides a solution to significantly reduce the calculated length of the photovoltaic support beam by adding a small detachable stiffening support to the photovoltaic support beam where it is difficult to set up an overall support system. This type of connector and arrangement has simple and clear force, easy installation, low steel consumption, little impact on the original structure, good safety, good economy, and will produce greater economic benefits, especially for large-capacity photovoltaic projects.

[0017] 2. This scheme uses reinforced supports arranged at key positions to constrain the lower flange and adjacent web of the photovoltaic bracket diagonal beam through the reinforced supports. The bearing capacity and torsional stiffness of the supports are greatly enhanced, while the deformation of the diagonal beam can be constrained by the stiffness of the top purlin. The calculated length of the lower flange of the photovoltaic bracket diagonal beam is effectively reduced without the need to set up a complicated support system, thereby improving the stability of the structure and significantly reducing the steel consumption of the structure.

[0018] 3. This scheme can halve the calculated length of the inclined beam out of plane by setting up stiffening supports at key positions without setting up a complicated lower flange support system, thereby greatly reducing the steel consumption of the structure.

[0019] 4. The stiffening support members provided under the purlin web in this scheme can effectively support the lower flange and lower web of the inclined beam, prevent the lateral bending and torsional deformation of the inclined beam at the support, and effectively utilize the bending stiffness of the upper purlin to form an effective support, thereby increasing the overall stable bearing capacity of the inclined beam.

[0020] 5. The stiffening ribs provided below the purlin web in this scheme can greatly improve the concentrated load bearing capacity at the support, increase the torsional resistance of the inclined beam support, and strengthen the support stiffness at the rooting position of the purlin.

[0021] 6. The welding work of this scheme is all carried out inside the reinforced support, and the performance of the main material of the photovoltaic bracket is not affected by welding, so the problem that stiffening ribs should not be set in cold-bent thin-walled steel is solved.

[0022] 7. In this scheme, the connection between the stiffening support and the inclined beam is bolted, which is extremely easy to install and hardly increases the workload on site.

[0023] 8. The reinforced bearings in this scheme can be recycled and reused to achieve sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram according to an embodiment of the utility model.

[0025] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the AA surface in the middle.

[0026] Figure 3 It is a structural schematic diagram of a single-column photovoltaic support according to an embodiment of the utility model.

[0027] Figure 4 It is a schematic structural diagram of a double-column photovoltaic support according to an embodiment of the utility model.

[0028] Description of reference numerals in the accompanying drawings:

[0029] 1. Inclined beam; 11. Inclined beam web; 12. Inclined beam upper flange; 13. Inclined beam lower flange; 2. Purlin support points; 21. Purlin support; 3. Purlin; 4. Short thin-walled C-shaped steel; 41. C-shaped steel web; 42. C-shaped steel upper side plate; 43. C-shaped steel lower side plate; 44. Stiffening ribs; 5. Single column; 51. First diagonal brace; 52. Second diagonal brace; 61. First column; 62. Second column; 63. Third diagonal brace; 64. Fourth diagonal brace; 7. Photovoltaic panel. DETAILED DESCRIPTION

[0030] The utility model provides a detachable stiffening support for a photovoltaic bracket, which solves the problem that the existing technical solutions are high in cost or risk, and forms an effective force transmission path in a very simple and minimally consuming manner, greatly reducing the calculated length of the inclined beam, thereby improving the reliability of the structure and reducing the steel consumption of the structure.

[0031] In general, this solution adopts the method of setting a stiffening support at the purlin support position at a specific position of the photovoltaic bracket diagonal beam to effectively support the compressed flange and adjacent web of the diagonal beam, so as to prevent deformation due to load, so as to achieve the effect of preventing the diagonal beam from losing its overall stability at this position by utilizing the stiffness of the purlin through the stiffening support, thereby reducing the calculated length of the diagonal beam and thus reducing the steel consumption of the structure. The stiffening support includes a short thin-walled C-shaped steel with an outer contour consistent with the inner contour of the diagonal beam, extending to the outer edge of the purlin and purlin support, and a stiffening rib is set at the center of the C-shaped steel, the stiffening rib is directly opposite to the purlin web position, and bolts are set at the thin-walled C-shaped steel web and flange positions on both sides of the stiffening rib to connect with the diagonal beam, purlin and purlin support.

[0032] This solution significantly strengthens the stiffness of the purlin support node of the inclined beam, improves the carrying capacity of the concentrated load at this location, and reduces the out-of-plane calculated length of the lower flange of the inclined beam of the photovoltaic bracket by strengthening the support and utilizing the stiffness of the upper purlin, strengthens the stability of the inclined beam, and greatly reduces the steel consumption of the photovoltaic bracket. The force is reasonable and reliable, the force transmission path is clear, the labor consumption is low, the construction difficulty is small, and the construction period is short. It is suitable for various engineering projects that reduce the steel consumption of photovoltaic brackets, especially for fixed brackets and fixed adjustable brackets with large power generation capacity, large angles, and large wind loads.

[0033] Specifically, see Figure 1 , Figure 2 , Figure 3 , a detachable stiffening support for a photovoltaic support according to an embodiment of the utility model, the photovoltaic support includes an inclined beam 1 arranged at a certain angle to the horizontal direction. The inclined beam 1 is, for example, a C-shaped steel, and each inclined beam 1 includes an inclined beam web 11 and an inclined beam upper flange 12 and an inclined beam lower flange 13 respectively located on the upper and lower sides of the inclined beam web 11. There are multiple (at least two, for example, four) purlin support points 2 on each inclined beam 1. A purlin support 21 is provided at each purlin support point 2, and specifically, the purlin support 21 is provided on the inclined beam upper flange 12. Purlins 3 are provided on the purlin support 21.

[0034] A stiffening support is provided at at least one purlin support point 2, and the stiffening support is a group of assemblies that are closely attached to the inner side of the inclined beam 1, and the stiffening support includes a short thin-walled C-shaped steel 4 whose outer contour matches (is consistent with) the inner contour of the inclined beam 1. The short thin-walled C-shaped steel 4 includes a C-shaped steel web 41 and a C-shaped steel upper side plate 42 and a C-shaped steel lower side plate 43 that are respectively located on the upper and lower sides of the C-shaped steel web 41; the short thin-walled C-shaped steel 4 is closely attached to the inner side of the inclined beam 1 in a matching manner, in other words, the two sides of the short thin-walled C-shaped steel 4 extend to the purlin flange and the outer side of the purlin support respectively, specifically, the short thin-walled C-shaped steel 4 is located in the inclined beam 1, and the C-shaped steel upper side plate 42 and the C-shaped steel lower side plate 43 are respectively attached to the upper flange 12 and the lower flange 13 of the inclined beam, and the C-shaped steel web 41 is attached to the web 11 of the inclined beam. A stiffening rib 44 is provided at the center of the short thin-walled C-shaped steel 4, and the stiffening rib 44 is directly opposite to the purlin web. Specifically, the stiffening rib 44 is plate-shaped, and the stiffening rib 44 is perpendicular to the length direction of the inclined beam 1. The stiffening rib 44 is vertically connected to the C-shaped steel web 41, the C-shaped steel upper side plate 42, and the C-shaped steel lower side plate 43. The short thin-walled C-shaped steel 4, the inclined beam 1, the purlin bracket 21 and the purlin 3 are installed and connected by bolts.

[0035] Preferably Figure 1 , Figure 2 As shown, the short thin-walled C-shaped steel 4 is provided with bolt mounting holes on the C-shaped steel web 41, the C-shaped steel upper side plate 42, and the C-shaped steel lower side plate 43 on both sides of the stiffening rib 44, that is, there are six holes on one short thin-walled C-shaped steel 4, and corresponding bolt mounting holes are also provided on the inclined beam 1, the purlin support 21, and the purlin 3. Bolts are installed in the bolt mounting holes, so that the short thin-walled C-shaped steel 4 is connected and tightly attached to the inclined beam 1 at multiple points on the upper, lower, and side surfaces, and the purlin support 21 and the purlin 3 are connected to the upper flange 12 of the inclined beam and the upper side plate 42 of the C-shaped steel through bolts.

[0036] In a specific embodiment, there are multiple inclined beams 1 distributed side by side transversely, and the inclined beams 1 are connected to the ground or other surfaces through positioning brackets, and the positioning brackets are, for example, single-column or double-column types. The length direction of the purlin 3 is horizontal and perpendicular to the length direction of the inclined beam 1. Multiple purlins 3 are distributed side by side along the inclination direction of the inclined beam 1, and the purlins 3 and the inclined beams 1 form a grid structure. The inclined beam 1 is used to connect and support the purlin 3, and the purlin 3 is used to connect and support the photovoltaic panels 7. Multiple photovoltaic panels 7 are laid flat on multiple purlins 3, and the back of the photovoltaic panels 7 is connected to the purlin 3. For example Figure 3 As shown, each inclined beam 1 has four purlin support points 2, and the four purlin support points 2 are distributed along the length direction of the inclined beam 1. Each photovoltaic panel 7 is supported and erected by two purlins 3. In this way, two rows of photovoltaic panels 7 are arranged in an upper and lower manner to achieve a stable arrangement of the inclined photovoltaic panels 7.

[0037] like Figure 3As shown, a single-column photovoltaic support (e.g., a single-column photovoltaic support) means that a single column 5 is provided below the middle (back side) of each inclined beam 1, and the single column 5 is, for example, vertically arranged, and the single column 5 is connected to the ground or other surfaces. The single column 5 is connected to a first diagonal brace 51 and a second diagonal brace 52, and the first diagonal brace 51 and the second diagonal brace 52 are respectively connected to the upper and lower parts of the inclined beam 1, thereby forming a stable support connection for the entire inclined beam 1.

[0038] like Figure 4 As shown, a double-column photovoltaic bracket (such as a double-column photovoltaic bracket) means that a first column 61 and a second column 62 are respectively provided at the upper and lower parts of each inclined beam 1. The first column 61 and the second column 62 are, for example, both vertically arranged and connected to the ground or other surfaces. The first column 61 and the second column 62 are one short and one long, corresponding to the inclination of the inclined beam 1. The first column 61 and the second column 62 are respectively connected to a third diagonal brace 63 and a fourth diagonal brace 64 on opposite sides. The third diagonal brace 63 and the fourth diagonal brace 64 are both connected to the middle part of the inclined beam 1, thereby forming a stable support connection for the entire inclined beam 1. Further preferably, in this double-column photovoltaic bracket, a short thin-walled C-shaped steel 4 is provided in the middle part of the inclined beam 1, which is equivalent to strengthening the connection support of the third diagonal brace 63 and the fourth diagonal brace 64.

[0039] It is understandable that the scope of application of the present invention is not limited to single-column photovoltaic brackets and double-column photovoltaic brackets; and single-column photovoltaic brackets and double-column photovoltaic brackets are not limited to Figure 3 , Figure 4 The fixed bracket shown also includes a single / double column type fixed adjustable bracket, a tracking bracket, etc.

[0040] Preferably, if Figure 3 , Figure 4 As shown in the figure, the most economical setting position of the stiffening support is: for a single-column photovoltaic bracket, a stiffening support (short thin-walled C-shaped steel 4) is set on the inner side of the diagonal beam 1 at the purlin support point 2 at the two outer (i.e., the uppermost and lowermost) purlins 3; for a double-column photovoltaic bracket, a stiffening support (short thin-walled C-shaped steel 4) is set on the inner side of the diagonal beam at the purlin support point 2 at the two inner (i.e., the middle) purlins. Thus, the stiffening support can better bear the concentrated load, constrain the diagonal beam web and lower flange at the purlin support, and use the bending stiffness of the upper purlin to achieve the purpose of reducing the calculated length of the diagonal beam and saving steel consumption.

[0041] It is understandable that Figure 3 For example, the two outer purlins are provided with short thin-walled C-shaped steel 4; while the two inner purlins do not have short thin-walled C-shaped steel 4, and the inclined beam, purlin support, and purlin connection structure there are directly connected by bolts (with Figure 1, Figure 2 Compared with the structure, there is no short thin-walled C-shaped steel 4 and the corresponding partial bolts).

[0042] Based on the detachable stiffening support for a photovoltaic bracket of the utility model, the utility model also provides a method for setting the detachable stiffening support for a photovoltaic bracket, comprising the following steps (except for cases with inevitable causal relationships, the steps are not limited in order):

[0043] According to the inner contour of the inclined beam 1, the short thin-walled C-shaped steel 4 in the stiffening support is selected so that both sides of the short thin-walled C-shaped steel 4 extend to the purlin flange and the outer side of the purlin support respectively, and the center is aligned with the purlin web position; wherein, the "short" of the short thin-walled C-shaped steel 4 means that its length in the length direction of the inclined beam 1 is much smaller than the inclined beam 1, and the "thin-walled" means that the wall thickness is thinner, for example, the wall thickness is thinner than the angle steel in the purlin support 21 and the purlin 3. The characteristics of "short" and "thin-walled" help to avoid excessive steel consumption, and its size can also meet the requirements of structural reinforcement.

[0044] A stiffening rib 44 is arranged at the center position of the short thin-walled C-shaped steel 4, and the stiffening rib 44 is welded to the C-shaped steel web 41, the C-shaped steel upper side plate 42, and the C-shaped steel lower side plate 43; wherein, the thickness of the stiffening rib 44 meets the compressive stability requirements of the concentrated load and can withstand the supporting force along the bending direction of the lower flange 13 (supported lower flange) of the inclined beam.

[0045] The short thin-walled C-shaped steel 4, the inclined beam 1, the purlin 3 and the purlin bracket 21 are installed and connected by bolts, and all connections should be able to meet the force transmission requirements; among them, the stiffening support can be pre-assembled on the inclined beam 1 during factory processing, and only needs to be connected with the upper flange purlin and the purlin bracket with bolts on site, and the other connections can be checked for their tightness to complete the connection. When the photovoltaic bracket needs to be adjusted, the stiffening support parts can be disassembled, recycled and reused due to the bolt connection method.

[0046] The basic principle of the utility model is as follows. According to the specifications of the photovoltaic support, the upper flange of the inclined beam can use the purlin as an effective supporting support. In the stiffened support of the utility model, the short thin-walled C-shaped steel arranged close to the inner side of the inclined beam is provided with stiffening ribs from the top to the upper and lower flanges, which can effectively support the compressed flange and the adjacent web of the inclined beam, so that the stiffness will not decrease due to the load and the original equilibrium position will not be maintained. At the same time, since the top purlin is firmly connected to the inclined beam, the torsion of the main beam will inevitably lead to the bending of the purlin. Therefore, the bending stiffness of the purlin can constrain the inclined beam, so that the inclined beam will not undergo bending-torsional buckling at this location, that is, the beam will not lose its overall stability here. That is, the calculated length of the beam is reduced by setting a stiffening support.

[0047] From the general layout of photovoltaic brackets, no stiffening ribs are set at the diagonal beam position at the purlin support (at the purlin support point). In addition to bearing the bending moment of the entire component, it also directly bears concentrated loads here, that is, the diagonal beam is simultaneously subjected to large normal stress, shear stress and local compressive stress, which is a relatively weak position. When no stiffening ribs are set, the purlin load exerts a torsional effect on the open thin-walled C-shaped steel diagonal beam, and the lower end of the diagonal beam web is subjected to a large concentrated pressure and eccentric moment. When designing cold-bent thin-walled open sections, it is necessary to pay attention to torsion resistance. Therefore, from the perspective of the force and layout of the steel structure, all purlin supports should be provided with the stiffening support of the utility model.

[0048] Considering that the number of photovoltaic brackets is generally huge, in order to achieve the best economic effect, the number of stiffening supports can be reduced, and they are only set at the position that is very critical to reducing the calculated length of the inclined beam, that is, reducing the steel consumption of the photovoltaic bracket. The specific setting position is: for a single-column photovoltaic bracket, the setting position is the two outer purlin supports, and the calculated length of its lower flange is reduced from the original 2L to the later La, and its calculated length is reduced to less than 1 / 2 of the original; for a double-column photovoltaic bracket, the setting position is the two inner purlin supports, and the calculated length of its lower flange is reduced from the original L to the later La, and its calculated length is reduced to less than 1 / 2 of the original, or even less than the purlin spacing, that is, the calculated length of the upper flange. For thin-walled curled channel steel, its calculated length significantly affects the stability calculation results, so the amount of steel structure engineering can be significantly reduced.

[0049] It is understandable that the above-mentioned calculation method and marking form of the length are based on existing technologies and standards, so they will not be elaborated here. The advantages of the stiffening support (equivalent to being used as a connector) of the utility model are: light node weight, simple force conditions, reasonable and reliable, clear force transmission path, small material consumption, low cost, no need to set up a cumbersome support system, easy installation, little impact on the original structure, etc., which greatly increases the stability of the lower flange, thereby greatly reducing the steel consumption of the structure.

[0050] In summary, the detachable stiffening support for photovoltaic bracket and the setting method thereof of the utility model have the following beneficial technical effects:

[0051] 1. This scheme provides a solution to significantly reduce the calculated length of the photovoltaic support beam by adding a small detachable stiffening support to the photovoltaic support beam where it is difficult to set up an overall support system. This type of connector and arrangement has simple and clear force, easy installation, low steel consumption, little impact on the original structure, good safety, good economy, and will produce greater economic benefits, especially for large-capacity photovoltaic projects.

[0052] 2. This scheme uses reinforced supports arranged at key positions to constrain the lower flange and adjacent web of the photovoltaic bracket diagonal beam through the reinforced supports. The bearing capacity and torsional stiffness of the supports are greatly enhanced, while the deformation of the diagonal beam can be constrained by the stiffness of the top purlin. The calculated length of the lower flange of the photovoltaic bracket diagonal beam is effectively reduced without the need to set up a complicated support system, thereby improving the stability of the structure and significantly reducing the steel consumption of the structure.

[0053] 3. This scheme can halve the calculated length of the inclined beam out of plane by setting up stiffening supports at key positions without setting up a complicated lower flange support system, thereby greatly reducing the steel consumption of the structure.

[0054] 4. The stiffening support members provided under the purlin web in this scheme can effectively support the lower flange and lower web of the inclined beam, prevent the lateral bending and torsional deformation of the inclined beam at the support, and effectively utilize the bending stiffness of the upper purlin to form an effective support, thereby increasing the overall stable bearing capacity of the inclined beam.

[0055] 5. The stiffening ribs provided below the purlin web in this scheme can greatly improve the concentrated load bearing capacity at the support, increase the torsional resistance of the inclined beam support, and strengthen the support stiffness at the rooting position of the purlin.

[0056] 6. The welding work of this scheme is all carried out inside the reinforced support, and the performance of the main material of the photovoltaic bracket is not affected by welding, so the problem that stiffening ribs should not be set in cold-bent thin-walled steel is solved.

[0057] 7. In this scheme, the connection between the stiffening support and the inclined beam is bolted, which is extremely easy to install and hardly increases the workload on site.

[0058] 8. The reinforced bearings in this scheme can be recycled and reused to achieve sustainable development.

Claims

1. A detachable stiffening support for a photovoltaic support, characterized in that: The photovoltaic support comprises an inclined beam (1); the inclined beam (1) comprises an inclined beam web (11) and an inclined beam upper flange (12) and an inclined beam lower flange (13) respectively located on the upper and lower sides of the inclined beam web (11); each inclined beam (1) has a plurality of purlin support points (2), a purlin support (21) is provided at each purlin support point (2), and a purlin (3) is provided on the purlin support (21); a stiffening support is provided at at least one purlin support point (2); the stiffening support comprises a short thin-walled C-shaped steel (4) whose outer contour matches the inner contour of the inclined beam (1), the short thin-walled C-shaped steel (4) comprising a C-shaped steel web ( 41) and a C-shaped steel upper side plate (42) and a C-shaped steel lower side plate (43) respectively located on the upper and lower sides of the C-shaped steel web (41); the short thin-walled C-shaped steel (4) is matched and closely attached to the inner side of the inclined beam (1); a stiffening rib (44) is arranged at the center of the short thin-walled C-shaped steel (4); the stiffening rib (44) is plate-shaped, and the stiffening rib (44) is perpendicular to the length direction of the inclined beam (1); the stiffening rib (44) is vertically connected to the C-shaped steel web (41), the C-shaped steel upper side plate (42), and the C-shaped steel lower side plate (43); the short thin-walled C-shaped steel (4), the inclined beam (1), the purlin bracket (21) and the purlin (3) are installed and connected by bolts.

2. The detachable stiffening support for a photovoltaic support according to claim 1, characterized in that: The short thin-walled C-shaped steel (4) is provided with bolt mounting holes on the C-shaped steel web (41) on both sides of the stiffening rib (44), the C-shaped steel upper side plate (42), and the C-shaped steel lower side plate (43), and the inclined beam (1) and the purlin support (21) and the purlin (3) are also provided with corresponding bolt mounting holes, and bolts are installed in the bolt mounting holes.

3. The detachable stiffening support for a photovoltaic support according to claim 1 or 2, characterized in that: For a single-column photovoltaic bracket, a stiffening support is provided on the inner side of the inclined beam (1) at the purlin support point (2) at the two outer purlins (3); for a double-column photovoltaic bracket, a stiffening support is provided on the inner side of the inclined beam at the purlin support point (2) at the two inner purlins.

4. The detachable stiffening support for a photovoltaic support according to claim 1 or 2, characterized in that: A single column (5) is provided in the middle of each inclined beam (1), and a first inclined brace (51) and a second inclined brace (52) are connected to the single column (5), and the first inclined brace (51) and the second inclined brace (52) are respectively connected to the upper part and the lower part of the inclined beam (1).

5. The detachable stiffening support for a photovoltaic support according to claim 1 or 2, characterized in that: A first column (61) and a second column (62) are respectively provided at the upper and lower parts of each inclined beam (1); the first column (61) and the second column (62) are respectively connected to a third inclined brace (63) and a fourth inclined brace (64) on opposite sides; the third inclined brace (63) and the fourth inclined brace (64) are both connected to the middle part of the inclined beam (1).

6. The detachable stiffening support for a photovoltaic support according to claim 5, characterized in that: A short thin-walled C-shaped steel (4) is provided in the middle of the inclined beam (1).

7. The detachable stiffening support for a photovoltaic support according to claim 1 or 2, characterized in that: A plurality of inclined beams (1) are arranged side by side in a transverse direction, the length direction of the purlins (3) is horizontal and perpendicular to the length direction of the inclined beam (1), and the plurality of purlins (3) are arranged side by side along the inclined direction of the inclined beam (1).

8. The detachable stiffening support for a photovoltaic support according to claim 1 or 2, characterized in that: Each inclined beam (1) is provided with four purlin support points (2), and the four purlin support points (2) are distributed along the length direction of the inclined beam (1).

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