Photovoltaic support anchor rod foundation

Abstract

The utility model relates to the technical field of photovoltaic support supporting, in particular to a photovoltaic support anchor rod foundation which comprises grouting anchor rods, the grouting anchor rods are embedded into the inner side of a foundation in a rotating mode by forming an included angle of 15 degrees with a ground plumb line, the number of the grouting anchor rods is three, and the top ends of the three grouting anchor rods are connected with connecting cylinders through bolts. A connecting plate is welded to the top end of the connecting cylinder, a connecting cap is connected to the top end of the connecting plate, an outer rod is fixedly connected to the top end of the connecting cap, an inner rod is slidably connected to the inner side of the outer rod, the top end of the inner rod is fixedly connected with the bottom end of the photovoltaic panel, and a positioning bolt is spirally connected to the inner side of the top end of the outer rod; the grouting anchor rod serves as a supporting base, the grouting anchor rod can provide continuous and stable supporting, the sliding connection of the outer rod and the inner rod can play a role in height difference compensation, and the phenomenon of unstable installation caused by height difference between adjacent grouting anchor rod bases is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic support brackets, in particular to an anchor rod foundation for a photovoltaic bracket. Background Art

[0002] like Figure 1 As shown in the figure, in order to install photovoltaic modules in places with poor terrain conditions but good light resources (such as tidal flats and fish ponds), spiral anchors are often used as bases for support. The spiral anchor is a support base rooted in the soil, which can achieve a stable support effect. There is no need to excavate a large-scale foundation pit during the construction of the spiral anchor. The torque is applied by the anchor rod to screw the spiral anchor plate into the deeper soil. The use of spiral anchors for soil support has little disturbance to the soil, which can give full play to the inherent strength of the original soil and improve the bearing capacity.

[0003] The above spiral anchor has a good supporting and stabilizing effect in the face of soft soil, but in the face of hard foundation, such as soil with high gravel content, the spiral blade of the above spiral anchor will be damaged during the construction process, which will greatly reduce the stabilizing effect;

[0004] Grouting anchor rods can play a better fixing effect in soil layers with high gravel content and rock foundations. At the same time, in the process of using grouting anchor rods as the base to support photovoltaic panels, due to the terrain differences in the grouting anchor rod installation area, there may be differences in angles and heights between adjacent grouting anchor rod bases after the grouting anchor rods are installed.

[0005] Based on the above problems, the utility model provides a photovoltaic bracket anchor foundation, which is suitable for hard foundations and can also compensate for its differences to further ensure the stability of photovoltaic panels after installation. Utility Model Content

[0006] The purpose of the utility model is to provide a photovoltaic support anchor foundation to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a photovoltaic bracket anchor foundation, comprising a grouting anchor, wherein the grouting anchor is rotated and embedded in the inner side of the foundation at an angle of 15° with the ground plumb line, the number of the grouting anchors is 3, the top ends of the three grouting anchors are connected to a connecting tube by bolts, the top ends of the connecting tubes are welded with a connecting plate, and the top ends of the connecting plates are connected to a connecting cap;

[0008] The top end of the connecting cap is fixedly connected to an outer rod, the inner side of the outer rod is slidably connected to an inner rod, the top end of the inner rod is fixedly connected to the bottom end of the photovoltaic panel, the inner side of the top end of the outer rod is spirally connected to a positioning bolt, and the position of the inner rod is fixed or movable by rotating the positioning bolt.

[0009] Under the above setting, the utility model uses the grouting anchor rod as the supporting base, the grouting anchor rod can provide continuous and stable support, and the sliding connection between the outer rod and the inner rod can play a role in height difference compensation, thereby preventing the phenomenon of unstable installation caused by the height difference between adjacent grouting anchor rod bases;

[0010] Preferably, the three grouting anchor rods are evenly distributed on the lower side of the connecting plate.

[0011] Preferably, the top end of the connecting plate is fixedly connected to the connecting cap.

[0012] Preferably, the top end of the connecting plate is rotatably connected to the connecting cap for angle compensation. A rotating ball is fixedly connected to the top end of the connecting plate, the outer side of the rotating ball is rotatably connected to the inner side of the connecting cap, and a gap for angle compensation is left between the bottom end of the connecting cap and the top end of the connecting plate.

[0013] Preferably, a wedge-shaped block is welded to the top end of the connecting plate, and the angle of the connecting cap is fixed by embedding the wedge-shaped block.

[0014] Under the above setting, in the scheme of setting a rotating ball between the connecting plate and the connecting cap, the top end of the connecting plate is rotatably connected to the connecting cap to play the role of angle compensation. After the connecting cap is adjusted to the required angle, the wedge block is embedded between the connecting cap and the connecting plate to fix the angle of the connecting cap, and then the wedge block is welded to the connecting plate;

[0015] Preferably, a cavity is left inside the grouting anchor rod, and an opening cover is spirally connected to the top end of the grouting anchor rod. In an initial state, the cavity is in a negative pressure state.

[0016] Preferably, a through hole is opened on the inner wall of the grouting anchor rod, and the through hole is arranged in an upward inclined shape. A drill rod is slidably connected to the inner side of the through hole. An inclined surface is arranged on the side of the drill rod away from the grouting anchor rod, and the tail end of the drill rod is fixedly connected with a tail cap to prevent the drill rod from detaching.

[0017] Preferably, a flow channel is opened on the inner side of the drill rod, and the two ends of the flow channel are respectively connected to a slurry inlet hole and a slurry outlet hole, the slurry outlet hole is arranged on the side wall of the drill rod, and the slurry inlet hole is arranged at the center of the tail cap. After the drill rod moves toward the outside of the grouting anchor to the end of the stroke, the slurry outlet hole is exposed on the outside of the grouting anchor.

[0018] Under the above arrangement, the utility model has a through hole on the inner wall of the grouting anchor rod, and a drill rod is slidably connected to the inner side of the through hole. When the grouting anchor rod is installed in the foundation, the drill rod is completely inside the grouting anchor rod under the action of the negative pressure in the cavity;

[0019] After the grouting anchor is installed into the foundation, the opening cover is removed, and the bottom end of the grouting anchor is connected to the pressurized grouting pipe. The cavity is gradually filled with slurry. Under the action of the slurry pressure, the drill rod moves away from the grouting anchor, and the slurry outlet is exposed on the outside of the grouting anchor. The slurry flows through the flow channel to realize the grouting operation, so that the surrounding soil is solidified, further increasing the stability of the grouting anchor.

[0020] Because the through hole is arranged in an upward inclined shape and the slurry outlet hole is exposed on the outside of the grouting anchor, the drill rod plays the role of a "barb", which on the one hand increases the contact area between the grouting anchor and the soil, and on the other hand prevents the grouting anchor from loosening, further increasing the stability of the grouting anchor.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. A photovoltaic bracket anchor foundation. The utility model uses a grouting anchor as a supporting base. The grouting anchor can provide continuous and stable support. The sliding connection between the outer rod and the inner rod can compensate for the height difference and prevent the height difference between adjacent grouting anchor bases from causing unstable installation.

[0023] 2. In this photovoltaic bracket anchor foundation, a rotating ball is set between the connecting plate and the connecting cap. The top end of the connecting plate is rotatably connected to the connecting cap to play a role in angle compensation. After the connecting cap is adjusted to the required angle, the wedge block is embedded between the connecting cap and the connecting plate to fix the angle of the connecting cap, and then the wedge block is welded to the connecting plate.

[0024] 3. In this photovoltaic bracket anchor foundation, after the grouting anchor is installed into the foundation, the opening cover is removed to connect the bottom end of the grouting anchor to the pressurized grouting pipe, and the cavity is gradually filled with slurry. Under the action of the slurry pressure, the drill rod moves away from the grouting anchor, and the slurry outlet hole is exposed on the outside of the grouting anchor. The slurry realizes grouting operation through the flow channel, solidifies the surrounding soil, and further increases the stability of the grouting anchor.

[0025] 4. In this photovoltaic support anchor foundation, because the through hole is arranged in an upward inclined shape, the slurry outlet hole is exposed on the outside of the grouting anchor, and the drill rod plays the role of a "barb", which increases the contact area between the grouting anchor and the soil on the one hand, and prevents the grouting anchor from loosening on the other hand, thereby further increasing the stability of the grouting anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the installation structure of the existing spiral anchor base;

[0027] Figure 2 This is a schematic diagram of the overall installation structure of the utility model;

[0028] Figure 3 It is a schematic diagram of the cross-sectional installation structure of the grouting anchor rod of the utility model;

[0029] Figure 4 This is a schematic diagram of the appearance structure of the drill rod of the utility model;

[0030] Figure 5 It is a cross-sectional structural diagram of the connection cap of the utility model;

[0031] Figure 6 For this utility model Figure 2 Schematic diagram of the installation structure at A in the figure.

[0032] In the figure: 1. foundation; 2. grouting anchor rod; 3. connecting tube; 4. connecting plate; 5. connecting cap; 6. outer rod; 7. inner rod; 8. positioning bolt; 9. photovoltaic panel; 10. drill rod; 11. inclined surface; 12. slurry outlet hole; 13. tail cap; 14. slurry inlet hole; 15. cavity; 16. through hole; 17. rotating ball; 18. wedge block; 19. opening cover. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Example 1

[0035] See also Figure 2 and Figure 5 , the utility model provides a technical solution:

[0036] A photovoltaic support anchor foundation, comprising a grouting anchor 2, the grouting anchor 2 is rotated and embedded in the inner side of a foundation 1 at an angle of 15° with a ground plumb line, the number of the grouting anchors 2 is 3, the top ends of the three grouting anchors 2 are all connected to a connecting tube 3 by bolts, the top ends of the connecting tube 3 are welded with a connecting plate 4, and the top ends of the connecting plates 4 are connected to a connecting cap 5;

[0037] The top of the connecting cap 5 is fixedly connected to an outer rod 6, the inner side of the outer rod 6 is slidably connected to an inner rod 7, the top of the inner rod 7 is fixedly connected to the bottom of the photovoltaic panel 9, and the inner side of the top of the outer rod 6 is spirally connected to a positioning bolt 8, and the position of the inner rod 7 can be fixed or moved by rotating the positioning bolt 8.

[0038] Under the above setting, the utility model uses the grouting anchor rod 2 as the supporting base, and the grouting anchor rod 2 can provide continuous and stable support. The sliding connection between the outer rod 6 and the inner rod 7 can play a role in height difference compensation, thereby preventing the difference in height between adjacent grouting anchor rod bases from causing unstable installation.

[0039] Specifically, three grouting anchor rods 2 are evenly distributed on the lower side of the connecting plate 4 .

[0040] Specifically, the top end of the connecting plate 4 is fixedly connected to the connecting cap 5 .

[0041] Specifically, the top of the connecting plate 4 is rotatably connected to the connecting cap 5 for angle compensation. A rotating ball 17 is fixedly connected to the top of the connecting plate 4. The outer side of the rotating ball 17 is rotatably connected to the inner side of the connecting cap 5. A gap for angle compensation is left between the bottom end of the connecting cap 5 and the top of the connecting plate 4.

[0042] Specifically, a wedge block 18 is welded to the top of the connecting plate 4 , and the angle of the connecting cap 5 is fixed by embedding the wedge block 18 .

[0043] Under the above setting, in the scheme of setting a rotating ball 17 between the connecting plate 4 and the connecting cap 5, the top end of the connecting plate 4 is rotatably connected to the connecting cap 5 to play a role of angle compensation. After the connecting cap 5 is adjusted to the required angle, the wedge block 18 is embedded between the connecting cap 5 and the connecting plate 4 to fix the angle of the connecting cap 5, and then the wedge block 18 is welded to the connecting plate 4.

[0044] Example 2

[0045] This embodiment is a further improvement of embodiment 1. Figure 2-6 A cavity 15 is left inside the grouting anchor rod 2, and an opening cover 19 is spirally connected to the top end of the grouting anchor rod 2. In the initial state, the cavity 15 is in a negative pressure state.

[0046] Specifically, a through hole 16 is opened on the inner wall of the grouting anchor rod 2, and the through hole 16 is arranged in an upward inclined shape. The inner side of the through hole 16 is slidably connected with a drill rod 10. The side of the drill rod 10 away from the grouting anchor rod 2 is provided with an inclined surface 11 to facilitate the insertion of the drill rod 10 into the hard foundation 1. The tail end of the drill rod 10 is fixedly connected with a tail cap 13 to prevent the drill rod 10 from detaching.

[0047] Specifically, a flow channel is opened on the inner side of the drill rod 10, and the two ends of the flow channel are respectively connected to the slurry inlet hole 14 and the slurry outlet hole 12. The slurry outlet hole 12 is arranged on the side wall of the drill rod 10, and the slurry inlet hole 14 is arranged at the center of the tail cap 13. After the drill rod 10 moves toward the outside of the grouting anchor rod 2 to the end of the stroke, the slurry outlet hole 12 is exposed on the outside of the grouting anchor rod 2.

[0048] Under the above arrangement, the utility model has a through hole 16 opened on the inner wall of the grouting anchor rod 2, and the inner side of the through hole 16 is slidably connected with the drill rod 10. When the grouting anchor rod 2 is installed in the foundation 1, the drill rod 10 is completely inside the grouting anchor rod 2 under the action of the negative pressure in the cavity 15;

[0049] After the grouting anchor rod 2 is installed into the foundation 1, the opening cover 19 is removed, so that the bottom end of the grouting anchor rod 2 is connected to the pressurized grouting pipe, and the cavity 15 is gradually filled with slurry. Under the action of the slurry pressure, the drill rod 10 moves away from the grouting anchor rod 2, and the slurry outlet hole 12 is exposed on the outside of the grouting anchor rod 2. The slurry is grouting through the flow channel to solidify the surrounding soil, further increasing the stability of the grouting anchor rod 2.

[0050] Because the through hole 16 is arranged in an upwardly inclined shape, after the slurry outlet hole 12 is exposed on the outside of the grouting anchor rod 2, the drill rod 10 plays the role of a "barb", which on the one hand increases the contact area between the grouting anchor rod 2 and the soil, and on the other hand prevents the grouting anchor rod 2 from loosening, thereby further increasing the stability of the grouting anchor rod 2.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic support anchor foundation, comprising a grouting anchor (2), characterized in that: The grouting anchor rod (2) is rotated and embedded in the inner side of the foundation (1) at an angle of 15° with the ground plumb line. The number of the grouting anchor rods (2) is 3. The top ends of the three grouting anchor rods (2) are connected to a connecting tube (3) by bolts. The top ends of the connecting tubes (3) are welded with a connecting plate (4). The top ends of the connecting plates (4) are connected to a connecting cap (5). The top end of the connecting cap (5) is fixedly connected to an outer rod (6), the inner side of the outer rod (6) is slidably connected to an inner rod (7), the top end of the inner rod (7) is fixedly connected to the bottom end of the photovoltaic panel (9), and the inner side of the top end of the outer rod (6) is spirally connected to a positioning bolt (8), and the position of the inner rod (7) is fixed or movable by rotating the positioning bolt (8).

2. A photovoltaic support anchor foundation according to claim 1, characterized in that: The three grouting anchor rods (2) are evenly distributed on the lower side of the connecting plate (4).

3. A photovoltaic support anchor foundation according to claim 2, characterized in that: The top end of the connecting plate (4) is fixedly connected to the connecting cap (5).

4. A photovoltaic support anchor foundation according to claim 2, characterized in that: The top end of the connecting plate (4) is rotatably connected to the connecting cap (5) for angle compensation. A rotating ball (17) is fixedly connected to the top end of the connecting plate (4). The outer side of the rotating ball (17) is rotatably connected to the inner side of the connecting cap (5). A gap for angle compensation is left between the bottom end of the connecting cap (5) and the top end of the connecting plate (4).

5. A photovoltaic support anchor foundation according to claim 4, characterized in that: A wedge-shaped block (18) is welded to the top end of the connecting plate (4), and the angle of the connecting cap (5) is fixed by embedding the wedge-shaped block (18).

6. A photovoltaic support anchor foundation according to claim 3 or 5, characterized in that: A cavity (15) is left inside the grouting anchor rod (2), and an opening cover (19) is spirally connected to the top end of the grouting anchor rod (2). In an initial state, the cavity (15) is in a negative pressure state.

7. A photovoltaic support anchor foundation according to claim 6, characterized in that: A through hole (16) is provided on the inner wall of the grouting anchor rod (2), and the through hole (16) is arranged in an upwardly inclined shape. A drill rod (10) is slidably connected to the inner side of the through hole (16), and an inclined surface (11) is provided on the side of the drill rod (10) away from the grouting anchor rod (2). The tail end of the drill rod (10) is fixedly connected to a tail cap (13) for preventing the drill rod (10) from detaching.

8. The photovoltaic support anchor foundation according to claim 7, characterized in that: A flow channel is provided on the inner side of the drill rod (10), and the two ends of the flow channel are respectively connected to a slurry inlet hole (14) and a slurry outlet hole (12). The slurry outlet hole (12) is arranged on the side wall of the drill rod (10), and the slurry inlet hole (14) is arranged at the center of the tail cap (13). After the drill rod (10) moves toward the outside of the grouting anchor rod (2) to the end of the stroke, the slurry outlet hole (12) is exposed on the outside of the grouting anchor rod (2).

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