Purline connecting structure and photovoltaic support system
Through the slot connection structure between the purlin and the rigid tie rod, combined with bolt fixing and through-hole design, the problem of purlin instability under strong winds is solved, the stability and wind resistance of the purlin are improved, and the material usage and installation difficulty are reduced.
Patent Information
- Application Number
- CN202422312420.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-23
AI Technical Summary
When the existing photovoltaic bracket system faces the pulverized wind, the out-of-plane stability of the purlin is poor, and the traditional connection method cannot effectively constrain the upper and lower flanges of the purlin, resulting in the structure being instable under strong winds.
The rigid tether and the purlin are used to connect the slot between the rigid tether and the purlin, and the upper and lower flanges of the purlin are directly fixed through the first bolt and the second bolt to form a stable frame system, which enhances the out-of-plane stability of the purlin, and provides through holes in the tether to disperse wind force and reduce structural vibration and stress concentration.
It improves the out-of-plane stability of the purlin, reduces stress concentration and structural deformation, enhances the overall stability and wind resistance of the photovoltaic bracket system, and reduces the amount of steel used and installation costs.
Smart Images
Figure CN223141836U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of roof photovoltaic brackets, in particular to a purlin connection structure and a photovoltaic bracket system. Background Technique
[0002] As an important structure for supporting newly built photovoltaic modules, the stability of the photovoltaic bracket system directly affects the safe operation and normal use of the photovoltaic power station; however, due to the overall flexible design of the photovoltaic bracket system, when facing the action of pulsating wind, the wind load borne is significantly increased. Therefore, the structural strength and stability of the photovoltaic bracket system need to be ensured during design and use; among them, the purlin is a key component in the photovoltaic bracket system. At present, the connection between the photovoltaic module and the purlin generally uses a pressing block or a bolt for connection. However, due to the narrow frame of the photovoltaic panel module, it is impossible to achieve the tight connection between the profiled steel sheet and the purlin in the traditional gabled frame system. Therefore, the diaphragm effect of the photovoltaic module on the purlin cannot be considered, and the lateral displacement and torsional constraint of the upper flange of the purlin by the photovoltaic module cannot be realized. Under the action of strong wind, the middle part of the purlin is compressed by the lower flange, resulting in poor out-of-plane stability of the purlin; for this reason, the purlin needs to be strengthened. At present, a tension bar is usually arranged on the purlin. The tension bar generally selects a small-diameter round steel or a light small-angle steel, and the webs between adjacent purlins are connected through the tension bar. Usually, two layers of tension bars are considered to be arranged as the lateral constraints for the upper and lower flanges of the web. However, since the tension bar does not directly restrain the upper and lower flanges of the purlin and only controls through the indirect action on the web, the effect of solving the instability of the purlin under strong wind conditions by setting the tension bar is not good. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a purlin connection structure and a photovoltaic bracket system, which are mainly used for the photovoltaic bracket erected on the roof, so as to achieve the purpose of reducing the steel consumption while enhancing the stability of the purlin.
[0004] A purlin connection structure disclosed by the utility model includes a purlin; a rigid tie rod is arranged between adjacent purlins. The purlin is C-shaped and the opening faces the same direction. The two ends of the rigid tie rod are provided with clamping grooves adapted to the purlin. The clamping groove is C-shaped and the inner diameter of the clamping groove is the same as the outer diameter of the purlin. The purlin is embedded in the clamping groove; a first bolt is penetrated through the upper part of each clamping groove, and the first bolt penetrates through the upper flange of the purlin and is connected with the upper part of the clamping groove. A second bolt is penetrated through the lower part of each clamping groove, and the second bolt penetrates through the lower flange of the purlin and is connected with the lower part of the clamping groove; a plurality of rigid tie rods are arranged at equal intervals along the length direction of the purlin between adjacent purlins.
[0005] Further, a plurality of through holes are evenly spaced in the middle of the rigid tie rod.
[0006] As a preferred embodiment, the through holes are honeycomb-shaped.
[0007] Furthermore, there are multiple first bolts, which are arranged at intervals along the length direction of the clamping groove at the upper part of the clamping groove, and there are multiple second bolts, which are arranged at intervals along the length direction of the clamping groove at the lower part of the clamping groove.
[0008] The utility model also discloses a photovoltaic support system, which includes columns arranged on the roof. The columns are provided with inclined beams arranged along the width direction of the roof. The utility model also includes the above-mentioned purlin connection structure. Multiple purlins are arranged on the inclined beams at intervals along the length direction of the roof. The rigid tie rods on both sides of the same purlin are arranged staggeredly; a photovoltaic module is also arranged above the purlins.
[0009] Furthermore, an inter-column support structure is arranged between adjacent columns, and the inter-column support structure is an X-shaped scissors brace.
[0010] The beneficial effects of the utility model are as follows: By arranging a rigid tie rod between two purlins, and by opening clamping grooves adapted to the purlins at both ends of the rigid tie rod, the rigid tie rod can be clamped on the purlins and directly connected to the web of the purlins. Then, through the first bolts and the second bolts, the clamping grooves are firmly connected to the upper and lower flanges of the purlins, so that the rigid tie rod can directly restrain the upper and lower flanges of the purlins, limit the out-of-plane displacement of the purlin flanges, disperse stress, improve the overall stability, and ensure the out-of-plane stability of the upper and lower flanges of the purlins when subjected to wind force. Description of the Drawings
[0011] Figure 1 : Schematic structural diagram of a purlin connection structure provided by the utility model;
[0012] Figure 2 : Schematic structural diagram of the rigid tie rod provided by the utility model;
[0013] Figure 3 : Schematic structural diagram of a photovoltaic support system provided by the utility model;
[0014] Figure 4 : Figure 3 Enlarged view of part A in
[0015] Reference numerals in the drawings: 1 - purlin; 2 - rigid tie rod; 21 - clamping groove; 22 - through hole; 23 - first bolt; 24 - second bolt; 25 - bolt hole; 3 - roof; 4 - column; 41 - inclined beam; 42 - inter-column support structure. Detailed Embodiments
[0016] The following further describes the utility model.
[0017] The utility model provides a purlin connection structure, which is mainly used for connecting the purlins 1 of a photovoltaic bracket, and comprises purlins 1; a rigid tie rod 2 is arranged between adjacent purlins 1, the purlins 1 are C-shaped and the openings face the same direction, clamping grooves 21 adapted to the purlins 1 are formed at both ends of the rigid tie rod 2, the clamping grooves 21 are C-shaped and the inner diameter of the clamping grooves 21 is the same as the outer diameter of the purlins 1, and the purlins 1 are embedded in the clamping grooves 21; a first bolt 23 is arranged through the upper part of each clamping groove 21, the first bolt 23 penetrates through the upper flange of the purlin 1 and is connected with the upper part of the clamping groove 21, a second bolt 24 is arranged through the lower part of each clamping groove 21, the second bolt 24 penetrates through the lower flange of the purlin 1 and is connected with the lower part of the clamping groove 21; and a plurality of the rigid tie rods 2 are arranged at equal intervals along the length direction of the purlins 1 between adjacent purlins 1.
[0018] Such as Figure 1 - Figure 2As shown in the figure, the purlin connection structure includes purlins 1. The purlins 1 are C-shaped with the same opening direction. A rigid tie rod 2 is provided between adjacent purlins 1. The two ends of the rigid tie rod 2 are provided with clamping grooves 21 adapted to the purlins 1. Since the inner diameter of the clamping groove 21 is the same as the outer diameter of the purlin 1, the purlin 1 can be clamped in the clamping groove 21. In this way, the rigid tie rod 2 can be directly abutted against the web of the purlin 1. Threaded holes are provided at the upper and lower parts of each clamping groove 21 and at the clamping joints of the upper and lower flanges of the purlin 1. Then, the first bolt 23 is sequentially passed through the upper part of the clamping groove 21 and the upper flange of the purlin 1 and set on the clamping groove 21, and the second bolt 24 is sequentially passed through the lower part of the clamping groove 21 and the lower flange of the purlin 1 and set on the clamping groove 21, so that the upper and lower parts of the clamping groove 21 are fixedly connected to the upper and lower flanges of the purlin 1, ensuring the connection stability between the purlin 1 and the rigid tie rod 2. Multiple rigid tie rods 2 provided between two adjacent purlins 1 are arranged between these two purlins 1, so that the rigid tie rod 2 can be directly connected to the upper and lower flanges and the web of the purlin 1, and the web of the purlin 1 will not be damaged during connection. The clamping grooves 21 provided at both ends of the rigid tie rod 2 are fixedly connected to the upper and lower flanges of the purlin 1 through bolts. Therefore, the rigid tie rod 2 can directly restrain the upper and lower flanges of the purlin 1 and limit the out-of-plane displacement of the flange of the purlin 1. When the purlin 1 is subjected to wind force perpendicular to the flange direction, the rigid tie rod 2 can provide sufficient binding force to prevent the flange from undergoing excessive bending or torsional deformation, thereby maintaining its stability. Moreover, the rigid tie rod 2, as a transverse support member for connecting adjacent purlins 1, together with the purlins 1 constitutes a stable frame system. This system can not only bear the vertical load from the photovoltaic modules but also effectively resist the action of strong wind force, thereby improving the stability of the entire structure. Moreover, the force on the purlin 1 can be transmitted to the adjacent purlin 1 through the rigid tie rod 2, reducing the stress concentration and deformation problems of the purlin 1. And the clamping grooves 21 are provided at both ends of the rigid tie rod 2 to make it adapted to the purlin 1, so the connection can be completed without damaging the web of the purlin 1, ensuring the structural integrity of the purlin 1. Then, by opening corresponding threaded holes, the rigid tie rod 2 and the purlin 1 can be directly connected and installed by using the first bolt 23 and the second bolt 24. The installation is quick and convenient, and the rigid tie rod 2 itself has greater stiffness, and the integrity of the purlin-rigid tie rod system formed is better. By setting a group of rigid tie rods 2 between adjacent purlins 1, the out-of-plane stability of the purlin 1 can be significantly improved without changing the cross-section of the purlin 1 or increasing the cross-section of the purlin 1.
[0019] To effectively disperse and reduce the direct impact of wind force on the rigid tie rod 2, such as Figure 1As shown, a plurality of through holes 22 are evenly spaced in the middle of the rigid tie rod 2. By providing the through holes 22, the direct impact of wind on the rigid tie rod 2 can be effectively dispersed and reduced. When the wind flows through the honeycomb-shaped holes, multiple reflections and eddies will occur, thereby weakening the concentration effect of the wind force and reducing the structural vibration and stress concentration caused by excessive wind pressure. Moreover, by providing the through holes 22, the overall weight of the rigid tie rod 2 is effectively reduced, which helps to improve the light weight and stiffness of the entire connection structure. Under the action of wind load, a lighter structure is more likely to maintain stability and reduce the swaying and deformation caused by wind. As a preferred method, in order to reduce the vortices and turbulences generated by sudden changes in the wind flow, thereby reducing the negative impact on the structure, the through holes 22 are honeycomb-shaped. The honeycomb-shaped through holes 22 are designed with good aerodynamic performance, which can change the flow direction and speed of the wind flow to a certain extent, reduce the vortices and turbulences generated by sudden changes in the wind flow, thereby reducing the negative impact on the rigid tie rod 2, effectively improving the wind resistance of the rigid tie rod 2, extending the service life, and not affecting the overall force.
[0020] To ensure the connection stability between the clamping groove 21 and the purlin 1, a plurality of first bolts 23 are arranged at intervals along the length direction of the clamping groove 21 on the upper part of the clamping groove 21, and a plurality of second bolts 24 are arranged at intervals along the length direction of the clamping groove 21 on the lower part of the clamping groove 21. By increasing the number of the first bolts 23 and the second bolts 24, the connection stability between the clamping groove 21 of each rigid tie rod 2 and the purlin 1 is ensured. However, it should be noted that too many first bolts 23 and second bolts 24 should not be set to avoid affecting the stability of the purlin 1 itself due to excessive holes in the upper and lower flanges of the purlin 1.
[0021] The present utility model further provides a photovoltaic support system, which includes columns 4 arranged on a roof 3. An inclined beam 42 is arranged on the columns 4 along the width direction of the roof 3. The photovoltaic support system further includes the above-mentioned purlin connection structure. A plurality of purlins 1 are arranged at intervals along the length direction of the roof 3 on the inclined beam 42. The rigid tie rods 2 on both sides of the same purlin 1 are arranged staggeredly. A photovoltaic module is further arranged above the purlin 1. As Figure 3 、 Figure 4As shown in the figure, the column 4 is perpendicular to the roof 3 and is vertically arranged on the roof 3. To ensure the stable support of the photovoltaic modules, multiple columns 4 that are parallel to each other and enclose a rectangular matrix are arranged on the roof 3. Diagonal beams 42 are provided on adjacent two columns 4 along the width direction of the roof 3. Four purlins 1 are arranged on the diagonal beams 42 at intervals along the length direction of the roof 3. Multiple rigid tie rods 2 with uniform intervals are provided between adjacent two purlins 1. The clamping grooves 21 opened at both ends of the rigid tie rod 2 are clamped outside the purlins 1, so that the web of the rigid tie rod 2 can directly abut against the web of the purlin 1. Then, the upper and lower parts of the clamping groove 21 are fixedly connected to the upper and lower flanges of the purlin 1 through the first bolt 23 and the second bolt 24. After that, the photovoltaic modules are arranged above the purlins 1. The two ends of the rigid tie rod 2 are fixedly connected to the upper and lower flanges of the purlin 1 through bolts. Therefore, the rigid tie rod 2 can directly restrain the upper and lower flanges of the purlin 1, restricting the out-of-plane displacement of the flange of the purlin 1. When the purlin 1 is subjected to the wind force perpendicular to the flange direction, the rigid tie rod 2 can provide sufficient binding force to prevent the flange from undergoing excessive bending or torsional deformation, thereby maintaining its stability. Moreover, as a transverse support member for connecting adjacent purlins 1, the rigid tie rod 2 and the purlin 1 together form a stable frame system. This system can not only bear the vertical load from the photovoltaic modules but also effectively resist the action of strong wind force, thereby improving the stability of the entire structure. Moreover, the force on the purlin 1 can be transmitted to the adjacent purlin 1 through the rigid tie rod 2, reducing the stress concentration and deformation problems of the purlin 1. And the two ends of the rigid tie rod 2 are provided with clamping grooves 21 to be adapted to the purlin 1. Therefore, the connection can be completed without damaging the web of the purlin 1, ensuring the structural integrity of the purlin 1. Then, by opening corresponding threaded holes, the rigid tie rod 2 and the purlin 1 can be directly connected and installed by using the first bolt 23 and the second bolt 24. The installation is quick and convenient. Moreover, the rigid tie rod 2 itself has greater stiffness, and the integrity of the purlin 1-tie rod system formed is better. By arranging a group of rigid tie rods 2 between adjacent purlins 1, the out-of-plane stability of the purlin 1 can be significantly improved without changing the cross-section of the purlin 1 or increasing the cross-section of the purlin 1. And the number of the rigid tie rods 2 can be adjusted according to the actual use situation to control the weight of the entire photovoltaic support system, avoiding being too heavy to be installed when installing the photovoltaic support on the roof 3. At the same time, honeycomb-shaped holes can be opened in the web of the rigid tie rod 2. Without affecting the overall force, the wind can pass through the holes, reducing the wind pressure on the rigid tie rod 2 and enhancing the stability of the photovoltaic support. Moreover, by opening the honeycomb-shaped through holes 22, the steel consumption of the entire photovoltaic support system is effectively reduced, reducing the cost.
[0022] To avoid the instability of the column 4 arranged on the roof 3 caused by excessive load above, such as Figure 3As shown, an inter-column support structure 42 is provided between adjacent columns 4, and the inter-column support structure 42 is an X-shaped cross brace; by providing an X-shaped cross brace between adjacent columns 4, the stability between columns 4 and columns 4 is ensured, and the columns 4 are prevented from becoming unstable due to excessive load or wind force above, resulting in the inclination or damage of the photovoltaic support system.
Claims
1. A purlin connection structure, comprising a purlin (1); characterized in that: A rigid tie rod (2) is provided between adjacent purlins (1). The purlins (1) are C-shaped and have openings facing the same direction. Both ends of the rigid tie rod (2) are provided with clamping grooves (21) adapted to the purlins (1). The clamping grooves (21) are C-shaped and the inner diameter of the clamping grooves (21) is the same as the outer diameter of the purlins (1). The purlins (1) are embedded in the clamping grooves (21). A first bolt (23) is penetrated through the upper flange of each clamping groove (21). The first bolt (23) penetrates through the upper flange of the purlin (1) and is connected to the upper flange of the clamping groove (21). A second bolt (24) is penetrated through the lower flange of each clamping groove (21). The second bolt (24) penetrates through the lower flange of the purlin (1) and is connected to the lower flange of the clamping groove (21). A plurality of the rigid tie rods (2) are evenly arranged at intervals in the length direction of the purlins (1) between adjacent purlins (1).
2. The purlin connection structure according to claim 1, characterized in that: A plurality of through holes (22) are evenly arranged at intervals in the middle of the rigid tie rod (2).
3. The purlin connection structure according to claim 2, characterized in that: The through holes (22) are honeycomb-shaped.
4. The purlin connection structure according to claim 1, wherein: There are a plurality of the first bolts (23) which are arranged at intervals in the length direction of the clamping groove (21) on the upper flange of the clamping groove (21), and there are a plurality of the second bolts (24) which are arranged at intervals in the length direction of the clamping groove (21) on the lower flange of the clamping groove (21).
5. A photovoltaic support system, comprising columns (4) arranged on a roof (3), wherein inclined beams (41) arranged along the width direction of the roof (3) are provided on the columns (4), and it is characterized in that: It also includes a purlin connection structure according to any one of claims 1-4. A plurality of the purlins (1) are arranged at intervals in the length direction of the roof surface (3) on the inclined beam (41). The rigid tie rods (2) located on both sides of the same purlin (1) are staggered. A photovoltaic module is also provided above the purlin (1).
6. A photovoltaic support system as described in claim 5, characterized in that: An inter-column support structure (42) is provided between adjacent columns (4). The inter-column support structure (42) is an X-shaped scissors brace.