CN222531578U

CN222531578U - Detachable stiffening support for photovoltaic bracket

Info

Publication number: CN222531578U
Application number: CN202421250304.9U
Authority: CN
Inventors: 张伏; 张鹏; 杨菁
Original assignee: North China Power Engineering Co Ltd of China Power Engineering Consulting Group
Current assignee: North China Power Engineering Co Ltd of China Power Engineering Consulting Group
Priority date: 2024-06-03
Filing date: 2024-06-03
Publication date: 2025-02-25
Anticipated expiration: 2034-06-03

Abstract

The utility model discloses a detachable stiffening support for a photovoltaic support, which comprises oblique beams, wherein each oblique beam is provided with a plurality of purline supporting points, purline supports are arranged at the purline supporting points, purlines are arranged on the purline supports, stiffening supports are arranged at least one purline supporting point, each 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, each short thin-wall C-shaped steel comprises a C-shaped steel web plate, C-shaped steel upper side plates and C-shaped steel lower side plates which are respectively positioned on the upper side and the lower side of the C-shaped steel web plate, the short thin-wall C-shaped steel is closely attached to the inner side of the oblique beam in a matched manner, stiffening ribs are arranged at the center positions of the short thin-wall C-shaped steel, the stiffening ribs are vertically connected with the C-shaped steel web plate, the C-shaped steel upper side plates and the C-shaped steel lower side plates, and the short thin-wall C-shaped steel supports are connected with purlines in a bolt mode. The scheme can improve the stability of the structure and greatly reduce the steel consumption of the structure.

Description

Detachable stiffening support for photovoltaic bracket

Technical Field

The utility model belongs to the technical field of solar photovoltaic, and particularly relates to a detachable stiffening support for a photovoltaic support.

Background

The assembly for realizing photoelectric conversion in the photovoltaic power station is called a photovoltaic assembly, the photovoltaic support is a steel support for supporting the photovoltaic assembly, and the photovoltaic support is generally arranged in open air on open fields with wide areas. Photovoltaic brackets are generally divided into fixed brackets, fixed adjustable brackets, and tracking brackets. The fixed photovoltaic support is generally divided into a single-upright photovoltaic support and a double-upright photovoltaic support, and is the most commonly used photovoltaic support with wide application.

The double-upright-column photovoltaic support is in the earliest adopted photovoltaic support form, has the advantages of good stability, small steel consumption, simple and convenient construction and optimal economy. The double-upright-column photovoltaic bracket consists of purlines, inclined beams, round steel cross supports, double upright columns, a group of herringbone inclined struts and round steel cross column supports, wherein the purlines, the inclined beams and the round steel cross supports are tensioned among the inclined beams, and the round steel cross column supports are tensioned on the side of a higher upright column of the longitudinal double upright columns. When calculating the sloping of the double-column photovoltaic support, the upper flange of the double-column photovoltaic support is limited by purlines and purline supports, and the calculation length of the double-column photovoltaic support can generally select the distance between the purlines. For the lower flange of the oblique beam, the calculated length of the lower flange is actually the distance between two upright posts due to the capability of transmitting longitudinal horizontal force of only the double upright posts, and the lower flange is used as a thin-wall curled channel steel with extremely small steel consumption. If the purline is used as a support to forcibly reduce the calculated length only because the height of the oblique beam is not large, the potential use risk is obviously caused. For example, for thin-wall curled channel purlins with same height, the upper part of the purlins is provided with top rigidity formed by a full-spread assembly which is more effective than an inclined beam, and the purlins are used as secondary beams, and the lower flange still needs to be formed by an effective system formed by braces, stay bars and the like, so that the calculation length can be reduced. According to the arrangement of the photovoltaic support, if an effective support system is to be formed on the lower flange of the oblique beam, an effective pressure force transmission system must be provided in addition to the cross tie, which is obviously costly and difficult to realize. The diagonal girder as a main girder is obviously unsuitable and not compliant with the specification if the actual supporting condition of the lower flange is completely ignored and the calculated length of the lower flange is forcibly reduced according to the top purline.

The single upright post is also an earliest fixed photovoltaic bracket form, and the specific gravity of the single upright post in the fixed bracket is higher and higher along with the recent significant horse-feeding of agricultural light complementation, forest light complementation and fishing light complementation projects. The single-column photovoltaic bracket is formed by purlines for directly supporting the photovoltaic module inclined beam and the cross supports and the single upright posts of the round steel are tensioned among the inclined beams. The calculated length of the upper flange of the inclined beam of the single-upright photovoltaic support is identical to that of the upper flange of the double-upright photovoltaic support. The lower flange of the vertical force transmission pillar is only provided with a single middle upright post, and the calculated length of the lower flange out of the plane of the vertical force transmission pillar is about twice of the half of the inclined beam, namely about the actual length of the inclined beam according to the cantilever distance from the pillar to the beam edge. The actual calculation length of the lower flange is larger than that of the double upright posts, and if the lower flange is selected according to actual conditions, larger steel consumption is caused. Similar to the double column case, the lower flanges are difficult to form into an effective support system, and the risk of instability is greater if the actual support situation is ignored.

When the fixed and adjustable basic structure is arranged in the same structure form as the fixed bracket, the problems of the inclined beam are basically consistent with those of the fixed bracket, and the description is omitted here.

Disclosure of utility model

The technical problem to be solved by the utility model is to provide the detachable stiffening support for the photovoltaic bracket, so that the problems of high cost or risk in the prior art are solved, an effective force transmission path is formed in a very simple and extremely low-cost mode, the calculation length of the oblique beam is greatly reduced, the reliability of the structure is improved, and the steel consumption of the structure is reduced.

According to the technical scheme, the detachable stiffening support for the photovoltaic support comprises oblique beams, wherein each oblique beam comprises an oblique beam web plate, oblique beam upper flanges and oblique beam lower flanges which are respectively positioned on the upper side and the lower side of the oblique beam web plate, each oblique beam is provided with a plurality of purline supporting points, purline supports are arranged at the purline supporting points, purlines are arranged on the purline supports, stiffening support is arranged at least one purline supporting point, each 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, each short thin-wall C-shaped steel comprises a C-shaped steel web plate and C-shaped steel upper side plates and C-shaped steel lower side plates which are respectively positioned on the upper side and the lower side of the corresponding C-shaped steel web plate, each short thin-wall C-shaped steel is tightly attached to the inner side of the oblique beam in a matched mode, stiffening ribs are arranged in the center of the short thin-wall C-shaped steel, each stiffening rib is perpendicular to the length direction of the oblique beam, each stiffening rib is perpendicularly connected with the corresponding C-shaped steel web plate, each stiffening rib is perpendicular to the corresponding C-shaped steel upper side plate, the corresponding C-shaped steel lower side plate, and each stiffening rib is mounted in a bolt mode.

Further, the short thin-wall C-shaped steel is provided with bolt mounting holes on the C-shaped steel webs, the C-shaped steel upper side plates and the C-shaped steel lower side plates on two sides of the stiffening rib, the inclined beam, the purlin support and the purlin are also provided with corresponding bolt mounting holes, and bolts are arranged in the bolt mounting holes.

Preferably, for a single-upright type photovoltaic support, stiffening supports are arranged on the inner sides of the inclined beams of purline supporting points at the two outer purlines, and for a double-upright type photovoltaic support, the stiffening supports are arranged on the inner sides of the inclined beams of the purline supporting points at the two inner purlines.

According to some embodiments, a single upright is provided in the middle of each diagonal beam, and a first diagonal strut and a second diagonal strut are connected to the single upright, and are connected to the upper portion and the lower portion of the diagonal beam, respectively.

According to further embodiments, a first and a second upright are provided at the upper and lower part of each diagonal beam, respectively, the first and second uprights being connected with a third and a fourth diagonal strut, respectively, at opposite sides, both connected to the middle part of the diagonal beam.

Preferably, the middle part of the inclined beam is provided with short thin-wall C-shaped steel.

Further, the oblique beam is transversely distributed with a plurality of purlines side by side, the length direction of the purlines is horizontal and perpendicular to the length direction of the oblique beam, and the purlines are distributed side by side along the oblique direction of the oblique beam.

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

Compared with the prior art, the utility model has the following beneficial technical effects:

1. The scheme provides a solution that the calculation length of the photovoltaic bracket inclined beam can be greatly reduced by adding a small detachable stiffening support on the photovoltaic bracket inclined beam which is difficult to set an integral supporting system. The connecting piece and the arrangement are simple and clear in stress, simple and convenient to install, low in steel consumption, small in influence on the original structure, good in safety and good in economy, and particularly, larger economic benefits are generated for large-capacity photovoltaic projects.

2. According to the scheme, the stiffening support is arranged at the key position, so that the lower flange of the inclined beam of the photovoltaic support and the adjacent web are restrained by the stiffening support, the bearing capacity and torsional rigidity of the support are greatly enhanced, and meanwhile, the deformation of the inclined beam can be restrained by the rigidity of the purline at the top, so that the calculated length of the lower flange of the inclined beam of the photovoltaic support is effectively reduced under the condition that a complex supporting system is not required to be arranged, the stability of the structure is improved, and meanwhile, the steel consumption of the structure is greatly reduced.

3. According to the scheme, the stiffening support is arranged at the key position, the effect of halving the calculated length out of the plane of the inclined beam can be achieved without setting a complicated lower flange supporting system, and the steel consumption of the structure is greatly reduced.

4. According to the scheme, the stiffening support piece arranged below the purline web plate can effectively support the lower flange of the inclined beam and the lower web plate, so that the inclined beam is prevented from being bent and deformed in the lateral direction at the support, the bending rigidity of the upper purline is effectively utilized to form an effective support, and the overall stable bearing capacity of the inclined beam is increased.

5. The stiffening rib that this scheme set up in purlin web below position can improve the concentrated load bearing capacity of support department by a wide margin, has increased the antitorque commentaries on classics ability of sloping support, strengthens the support rigidity in purlin rooting position.

6. The welding work of this scheme is inside the support of putting more energy into, does not influence the performance of photovoltaic support principal material because of the welding, makes the problem that should not set up the stiffening rib in the thin-walled cold-formed steel obtain solving.

7. The stiffening support and the oblique beam are connected through bolting, so that the stiffening support is extremely simple and convenient to install, and the field workload is hardly increased.

8. The stiffening support can be recycled, and sustainable development is realized.

Drawings

FIG. 1 is a schematic diagram of a structure according to an embodiment of the utility model.

FIG. 2 is a schematic cross-sectional view of the A-A plane of FIG. 1.

Fig. 3 is a schematic structural view of a single-column photovoltaic bracket according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a double-column photovoltaic bracket according to an embodiment of the present utility model.

Reference numerals in the drawings illustrate:

1. The photovoltaic cell panel comprises a diagonal beam, 11, a diagonal beam web plate, 12, a diagonal beam upper flange, 13, a diagonal beam lower flange, 2, purline supporting points, 21, a purline support, 3, purlines, 4, short thin-wall C-shaped steel, 41, C-shaped steel web plates, 42, C-shaped steel upper side plates, 43, C-shaped steel lower side plates, 44, stiffening ribs, 5, single upright posts, 51, a first diagonal brace, 52, a second diagonal brace, 61, a first upright post, 62, a second upright post, 63, a third diagonal brace, 64, a fourth diagonal brace and 7, and a photovoltaic cell panel.

Detailed Description

The utility model provides a detachable stiffening support for a photovoltaic bracket, which solves the problems of high cost or risk in the prior art, realizes an effective force transmission path in a very simple and extremely low-cost mode, and greatly reduces the calculated length of a diagonal beam, thereby improving the reliability of the structure and reducing the steel consumption of the structure.

In the scheme, the stiffening support is arranged at the purline supporting position of the specific position of the inclined beam of the photovoltaic bracket, so that the pressed flange of the inclined beam and the adjacent web are effectively supported, deformation caused by load is avoided, the effect that the inclined beam does not lose the integral stability at the position due to the rigidity of the purline is achieved through the stiffening support, and therefore the calculated length of the inclined beam is reduced, and the steel consumption of the structure is reduced. The stiffening support comprises a section of short thin-wall C-shaped steel with the outer contour consistent with the inner contour of the inclined beam and extending to the outer edges of the purline and the purline support, a stiffening rib is arranged at the center of the C-shaped steel and is opposite to the web plate of the purline, and bolts are respectively arranged at the web plates and the flange positions of the thin-wall C-shaped steel on two sides of the stiffening rib and are connected with the inclined beam, the purline and the purline support.

The scheme remarkably strengthens the rigidity of the purline support node position of the oblique beam, improves the bearing capacity of concentrated load at the position, reduces the out-of-plane calculated length of the lower flange of the oblique beam of the photovoltaic bracket by using the rigidity of the purline at the upper part of the stiffening support, strengthens the stability of the oblique beam, greatly reduces the steel consumption of the photovoltaic bracket, has reasonable and reliable stress, definite force transmission path, less labor consumption, small construction difficulty and short construction period. The method is suitable for various engineering projects of pre-reducing the steel consumption of the photovoltaic support, and is particularly suitable for fixed supports and fixed adjustable supports with large power generation capacity, large angle and large wind load.

Referring to fig. 1, 2 and 3, a detachable stiffening support for a photovoltaic bracket according to an embodiment of the utility model includes a diagonal beam 1 inclined at an angle to the horizontal. The inclined beams 1 are C-shaped steel, and each inclined beam 1 comprises an inclined beam web 11, and inclined beam upper flanges 12 and inclined beam lower flanges 13 which are respectively positioned on the upper side and the lower side of the inclined beam web 11. On each oblique beam 1 there are a plurality of (at least two, for example four) purlin bearing points 2. At each purlin supporting point 2, a purlin bracket 21 is provided, and specifically, the purlin bracket 21 is provided on the upper flange 12 of the oblique beam. Purlins 3 are provided on purlin holders 21.

At least one purline supporting point 2 is provided with a stiffening support, and the stiffening support is a group of assemblies closely attached to the inner side of the inclined beam 1 and comprises a section of short thin-wall C-shaped steel 4 with the outer contour matched with (consistent with) the inner contour of the inclined beam 1. The short thin-wall C-shaped steel 4 comprises a C-shaped steel web 41, a C-shaped steel upper side plate 42 and a C-shaped steel lower side plate 43 which are respectively positioned on the upper side and the lower side of the C-shaped steel web 41, and the short thin-wall C-shaped steel 4 is closely attached to the inner side of the inclined beam 1 in a matched mode, in other words, the two sides of the short thin-wall C-shaped steel 4 respectively extend to the outer sides of purlin flanges and purlin supports, specifically, the short thin-wall C-shaped steel 4 is positioned in the inclined beam 1, the C-shaped steel upper side plate 42 and the C-shaped steel lower side plate 43 are respectively attached to the inclined beam upper flange 12 and the inclined beam lower flange 13, and the C-shaped steel web 41 is attached to the inclined beam web 11. The stiffening rib 44 is arranged at the center of the short thin-wall C-shaped steel 4, the stiffening rib 44 faces to the purline web plate, specifically, the stiffening rib 44 is plate-shaped, the stiffening rib 44 is perpendicular to the length direction of the inclined beam 1, and the stiffening rib 44 is vertically connected with 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-wall C-shaped steel 4, the oblique beam 1, the purlin support 21 and the purlin 3 are installed and connected in a bolt mode.

Preferably, as shown in fig. 1 and 2, the short and thin-wall C-shaped steel 4 is provided with bolt mounting holes on the C-shaped steel webs 41, the C-shaped steel upper side plates 42 and the C-shaped steel lower side plates 43 on two sides of the stiffening rib 44, that is, six holes are formed on one short and thin-wall C-shaped steel 4, corresponding bolt mounting holes are also formed on the inclined beam 1, the purlin support 21 and the purlin 3, bolts are mounted in the bolt mounting holes, so that the short and thin-wall C-shaped steel 4 is connected and clung to a plurality of points on the upper, lower and side surfaces of the inclined beam 1, and the purlin support 21 and the purlin 3 are connected with the inclined beam upper flange 12 and the C-shaped steel upper side plates 42 through bolts.

In a specific embodiment, a plurality of oblique beams 1 are transversely distributed side by side, the oblique beams 1 are connected with the ground or other surfaces through positioning brackets, and the positioning brackets are in a single-column type or a double-column type, for example. The length direction of the purlines 3 is horizontal and perpendicular to the length direction of the oblique beam 1, a plurality of purlines 3 are distributed side by side along the oblique direction of the oblique beam 1, and the purlines 3 and the oblique beam 1 form a grid-shaped structure. The oblique beam 1 is used for connecting and supporting purlines 3, the purlines 3 are used for connecting and supporting photovoltaic cell panels 7, a plurality of photovoltaic cell panels 7 are tiled on the purlines 3, and the back of the photovoltaic cell panels 7 are connected with the purlines 3. For example, as shown in fig. 3, four purlin supporting points 2 are provided on each oblique beam 1, the four purlin supporting points 2 are distributed along the length direction of the oblique beam 1, each photovoltaic cell panel 7 is supported and erected by two purlins 3, and thus, the upper row photovoltaic cell panel 7 and the lower row photovoltaic cell panel 7 are arranged, and the stable arrangement of the inclined photovoltaic cell panels 7 is realized.

As shown in fig. 3, a single-column type photovoltaic bracket (for example, a single-column photovoltaic bracket) refers to that a single column 5 is disposed below (on the back side of) the middle portion of each inclined beam 1, and the single column 5 is disposed vertically, for example, and the single column 5 is connected to the ground or other surfaces. The single upright 5 is connected with a first diagonal bracing 51 and a second diagonal bracing 52, and the first diagonal bracing 51 and the second diagonal bracing 52 are respectively connected to the upper part and the lower part of the diagonal beam 1, so that stable supporting connection of the whole diagonal beam 1 is formed.

As shown in fig. 4, the double-column type photovoltaic support (such as a double-column photovoltaic support) is that a first column 61 and a second column 62 are respectively provided at the upper portion and the lower portion of each inclined beam 1, and the first column 61 and the second column 62 are vertically arranged and connected with the ground or other surfaces, for example, the first column 61 and the second column 62 are short and long, corresponding to the inclination condition of the inclined beam 1. The first and second uprights 61 and 62 are connected at opposite sides with a third and fourth diagonal brace 63 and 64, respectively, each of the third and fourth diagonal braces 63 and 64 being connected to the middle of the diagonal beam 1, thereby forming a stable supporting connection to the entire diagonal beam 1. Further preferably, in this double-upright type photovoltaic support, the middle part of the diagonal beam 1 is provided with a short thin-walled C-shaped steel 4, corresponding to the reinforcement of the connection support of the third 63 and fourth 64 diagonal braces.

It will be appreciated that the scope of application of the present utility model is not limited to single-column type photovoltaic brackets and double-column type photovoltaic brackets, and that single-column type photovoltaic brackets and double-column type photovoltaic brackets are not limited to the fixed brackets shown in fig. 3 and 4, but also include single/double-column type fixed adjustable brackets, tracking brackets, and the like.

Preferably, as shown in fig. 3 and 4, the stiffening supports with optimal economy are arranged at the positions that stiffening supports (short thin-wall C-shaped steel 4) are arranged on the inner sides of the inclined beams 1 of the purline supporting points 2 at the outer side (namely the uppermost and lowermost) two purlines 3 for a single-upright type photovoltaic bracket, and stiffening supports (short thin-wall C-shaped steel 4) are arranged on the inner sides of the inclined beams of the purline supporting points 2 at the inner side (namely the middle) two purlines for a double-upright type photovoltaic bracket. Therefore, when the stiffening support better bears concentrated load, the inclined beam web plate and the lower flange at the purline support are restrained, and the purpose of reducing the calculated length of the inclined beam and further saving the steel consumption is achieved by utilizing the bending rigidity of the upper purline.

It will be appreciated that, taking fig. 3 as an example, short thin-wall C-shaped steel 4 is arranged at the two purlines at the outer side, while short thin-wall C-shaped steel 4 is not arranged at the two purlines at the inner side, and the oblique beam, the purline support and the purline connecting structure at the positions are directly connected through bolts (compared with the structures in fig. 1 and 2, the short thin-wall C-shaped steel 4 and corresponding partial bolts are not arranged).

Based on the detachable stiffening support for the photovoltaic bracket, the utility model also provides a setting method of the detachable stiffening support for the photovoltaic bracket, which comprises the following steps (except the condition of certain causality, the steps do not limit the sequence):

According to the inner contour of the diagonal beam 1, the short thin-wall C-shaped steel 4 in the stiffening support is selected, two sides of the short thin-wall C-shaped steel 4 respectively extend to the outer sides of the purline flanges and purline supports, and the centers of the short thin-wall C-shaped steel 4 are aligned with the positions of purline webs, wherein the short length of the short thin-wall C-shaped steel 4 is far smaller than that of the diagonal beam 1 in the length direction of the diagonal beam 1, the thin wall is thin, for example, the thin wall is thinner relative to angle steel in the purline supports 21 and the purlines 3, the characteristics of the short thin wall are helpful for avoiding excessive steel consumption, and meanwhile, the size of the short thin wall C-shaped steel can meet the requirement of the structural reinforcement effect.

The stiffening rib 44 is arranged at the center of the short thin-wall C-shaped steel 4, and the stiffening rib 44 is welded with 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 requirement of bearing the stability of the compression of the concentrated load and can bear the supporting force along the buckling direction of the inclined beam lower flange 13 (supported lower flange).

The short thin-wall C-shaped steel 4, the inclined beam 1, the purline 3 and the purline support 21 are installed and connected through bolts, all the connections can meet the force transmission requirement, wherein the stiffening support can be pre-assembled on the inclined beam 1 during factory processing, the stiffening support can be connected with the upper flange purline and the purline support only through bolts on site, and the connection can be completed by checking the fastening condition of the stiffening support through other connections. When the photovoltaic support is provided with adjustment needs, because of the bolted connection mode, its stiffening support spare can dismantle, retrieve the recycle.

The basic principle of the present utility model is as follows. According to the specification of the photovoltaic support, the purline can be used as an effective supporting support by the upper flange of the inclined beam. The stiffening ribs which are arranged in the short thin-wall C-shaped steel which is closely attached to the inner side of the inclined beam and are arranged on the upper flange and the lower flange in the stiffening support can effectively support the pressed flange of the inclined beam and the adjacent web plate, and the rigidity is not reduced due to load, so that the original balance position cannot be maintained. Simultaneously, because the purline at the top is firmly connected with the inclined beam, the main beam torsion inevitably drives the purline to bend, and therefore, the bending rigidity of the purline can restrict the inclined beam, so that the inclined beam cannot be subjected to bending buckling at the position, namely, the whole stability of the beam cannot be lost. I.e. by providing stiffening means the calculated length of the beam is reduced.

In view of the general arrangement condition of the photovoltaic bracket, stiffening ribs are not arranged at the position of the inclined beam at the purline support point (purline support point), and the inclined beam directly bears concentrated load besides bearing the whole bending moment of the component, namely, the inclined beam bears larger normal stress, shearing stress and local compressive stress at the same time, so that the inclined beam is a weaker position. When no stiffening rib is arranged, the purline load has torsion effect on the open thin-wall C-shaped steel inclined beam, and the lower end of the inclined beam web plate bears larger pressure and eccentric moment. The design of the cold-formed thin-wall opening section requires attention to torsion resistance, so that all purline supports are preferably provided with the stiffening support according to the utility model from the angles of stress and arrangement of the steel structure.

Considering that the general number of the photovoltaic supports is huge, the number of the stiffening supports can be reduced to obtain the optimal economic effect, the stiffening supports are only arranged at the position which is very critical to the reduction of the calculated length of the inclined beam, namely the steel consumption of the photovoltaic supports, the concrete arrangement positions are that for a single-upright photovoltaic support, the calculated length of the lower flange of the single-upright photovoltaic support is reduced to less than 1/2 of the calculated length of the lower flange of the single-upright photovoltaic support from original 2L to later La, and for a double-upright photovoltaic support, the calculated length of the lower flange of the double-upright photovoltaic support is reduced to less than 1/2 of the calculated length of the lower flange of the double-upright photovoltaic support from original L to later La, namely the calculated length of the upper flange of the double-upright photovoltaic support is reduced to less than 1/2 of the original purline spacing. For the thin-wall curled channel steel, the calculated length of the thin-wall curled channel steel obviously influences the stable calculated result, so that the engineering quantity of the steel structure can be obviously reduced.

It can be appreciated that the above-mentioned calculation method, labeling form, etc. of the calculation length are performed according to the prior art and the standard, and thus are not described herein. The stiffening support (equivalent to the connecting piece) has the advantages of light dead weight of the node, simple, reasonable and reliable stress condition, definite force transmission path, small material consumption, low cost, no need of a complicated supporting system, simple and convenient installation, small influence on the original structure and the like, and greatly increases the stability of the lower flange, thereby greatly reducing the steel consumption of the structure.

In summary, the detachable stiffening support for the photovoltaic bracket and the setting method thereof have the following beneficial technical effects:

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), and the short thin-walled C-shaped steel (4) is provided at the upper and lower sides of the inclined beam web (1). The steel (4) comprises 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 closely attached to the inner side of the inclined beam (1) in a matching manner. 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 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 support (21) and the purlin (3) are installed and connected by bolts.

2. The detachable stiffening support for a photovoltaic bracket according to claim 1 is characterized in that 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), and corresponding bolt mounting holes are also provided on the inclined beam (1) and the purlin support (21) and the purlin (3), and bolts are installed in the bolt mounting holes.

3. The detachable stiffening support for a photovoltaic bracket according to claim 1 or 2 is characterized in that, for a single-column type photovoltaic bracket, a stiffening support is arranged 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 type photovoltaic bracket, a stiffening support is arranged 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 bracket according to claim 1 or 2 is characterized in that a single column (5) is provided in the middle of each inclined beam (1), and a first diagonal brace (51) and a second diagonal brace (52) are connected to the single column (5), 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).

5. The detachable stiffening support for a photovoltaic bracket according to claim 1 or 2 is 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), and 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, and the third diagonal brace (63) and the fourth diagonal brace (64) are both connected to the middle part of the inclined beam (1).

6. The detachable stiffening support for a photovoltaic bracket according to claim 5 is 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 bracket according to claim 1 or 2 is characterized in that a plurality of inclined beams (1) are distributed side by side laterally, the length direction of the purlins (3) is horizontal and perpendicular to the length direction of the inclined beams (1), and the plurality of purlins (3) are distributed side by side along the inclination direction of the inclined beams (1).

8. The detachable stiffening support for a photovoltaic bracket according to claim 1 or 2 is characterized in that 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).