Roof tile clamp and photovoltaic roof connecting system

Abstract

The invention relates to a roof tile clamp and a photovoltaic roof connecting system. The roof tile clamp comprises a mounting plate part, a first straight leg part and a second bent leg part, wherein the first straight leg part and the second bent leg part are located below the mounting plate part and oppositely arranged. The mounting plate portion extends horizontally in the left-right direction and the first straight leg portion extends vertically in the up-down direction. The mounting plate part is at least integrally connected with one of the first straight leg part and the second bent leg part, and a triangular clamping space is formed between the first straight leg part and the second bent leg part. The photovoltaic roof connecting system comprises a photovoltaic support purline, a photovoltaic roof tile and the roof tile clamp. The roof tile clamp is connected between the photovoltaic support purline and the photovoltaic roof tile, the photovoltaic roof tile comprises a tile base plate, corrugations arranged on the tile base plate in a protruding mode and positioning structures arranged on the corrugations in a protruding mode, and the positioning structures enter the clamping space to be clamped and positioned by the roof tile clamp. The double requirements of supporting force and clamping force can be met at the same time.

Description

Technical Field

[0001] The invention relates to the field of photovoltaics, in particular to a roof tile clamp and a photovoltaic roof connection system. Background Art

[0002] Roof tile clamps are widely used in the photovoltaic field. They come in a variety of forms, but existing roof tile clamps are typically symmetrically positioned on the left and right sides of the clamping space, resulting in a single function and failing to meet the dual requirements of support and clamping force. Summary of the Invention

[0003] The object of the present invention is to provide a roof tile clamp and a photovoltaic roof connection system, wherein the roof tile clamp can simultaneously meet the dual requirements of supporting force and clamping force.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution 1: a roof tile clamp, comprising a mounting plate portion and a first straight leg portion and a second curved leg portion located below the mounting plate portion and arranged opposite to each other, the mounting plate portion extending horizontally in the left-right direction and the first straight leg portion extending vertically in the up-down direction; the mounting plate portion is integrally connected to at least one of the first straight leg portion and the second curved leg portion, and a triangular clamping space is provided between the first straight leg portion and the second curved leg portion.

[0005] As a further improved technical solution 1 of the present invention, the second curved leg portion includes a first straight segment extending in a direction away from the first straight leg portion and a second straight segment extending in a direction close to the first straight leg portion, the first straight segment and the second straight segment are both horizontal or inclined, but the first straight segment and the second straight segment cannot extend horizontally at the same time; the end of the first straight segment and the beginning of the second straight segment are connected to form a sharp angle bend or a rounded angle bend.

[0006] As a further improved technical solution 1 of the present invention, the first straight leg portion includes a first vertical segment and a second vertical segment extending integrally, the second curved leg portion includes a third vertical segment arranged opposite to and extending parallel to the first vertical segment, the length of the third vertical segment is 1 / 2 of the length of the first straight leg portion, and the projection length of the first straight segment and the second straight segment on the first straight leg portion is 1 / 2 of the length of the first straight leg portion.

[0007] As a further improved technical solution 1 of the present invention, two fasteners are further provided, and the mounting plate portion, the first vertical segment and the third vertical segment are all provided with positioning holes, one of the fasteners passes through the positioning hole on the first vertical segment and the positioning hole on the third vertical segment, and the other fastener passes through the positioning hole on the mounting plate portion.

[0008] As a further improved technical solution 1 of the present invention, it also includes a first foot, which is integrally bent and extended from the first straight leg portion away from the bottom end of the mounting plate portion.

[0009] As a further improved technical solution 1 of the present invention, it also includes a second foot, which is bent and extended integrally from the second bent leg portion away from the bottom end of the mounting plate portion, and the first foot and the second foot extend in opposite directions.

[0010] As a further improved technical solution 2 of the present invention, a photovoltaic roof connection system includes photovoltaic bracket purlins, photovoltaic roof tiles and the roof tile clamp as described above, the roof tile clamp is connected between the photovoltaic bracket purlins and the photovoltaic roof tiles, the photovoltaic roof tiles include a tile base plate, corrugations protruding from the tile base plate and a positioning structure protruding from the corrugations, the positioning structure enters the clamping space and is clamped and positioned by the roof tile clamp.

[0011] As a further improved technical solution 2 of the present invention, the positioning structure is a triangle protruding from the photovoltaic roof tile.

[0012] As a further improved technical solution 2 of the present invention, the tile base plate includes a first plate portion and a second plate portion, the first plate portion is integrally protruded at the edge close to the second plate portion to form a first curling structure, the second plate portion is integrally protruded at the edge close to the first plate portion to form a second curling structure, the second curling structure is arranged outside the first curling structure to form the wrapped positioning structure, and the positioning structure unfolds into a triangular shape after entering the clamping space.

[0013] As a further improved technical solution 2 of the present invention, it also includes multiple photovoltaic components and several pressing blocks, the photovoltaic components are arranged in at least one row, and the pressing blocks include side pressing blocks and middle pressing blocks. The side pressing blocks are used to press the two outermost photovoltaic components in a row of the photovoltaic components onto the purlins of the photovoltaic bracket, and the middle pressing blocks are used to press the two adjacent photovoltaic components in a row of the photovoltaic components onto the purlins of the photovoltaic bracket respectively.

[0014] Compared with the prior art, the present invention has a first straight leg and a second curved leg that are relatively arranged, and a triangular clamping space is provided between the first straight leg and the second curved leg. The photovoltaic roof tile includes corrugations that are positioned in the clamping space. The first straight leg is on one side of the corrugations and has greater strength, and is mainly used to provide supporting force. The second curved leg is on the other side of the corrugations and has greater flexibility. The second curved leg cooperates with the first straight leg and is mainly used to provide clamping force. With such an arrangement, the roof tile clamp in the present invention can simultaneously meet the dual requirements of supporting force and clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the combination of the photovoltaic roof connection system of the present invention;

[0016] Figure 2 yes Figure 1 Enlarged view of part A;

[0017] Figure 3 yes Figure 1 Enlarged view of part B;

[0018] Figure 4 This is a schematic diagram of the assembly of a roof tile clamp according to a first embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the first part of the first embodiment of the roof tile clamp of the present invention;

[0020] Figure 6 This is a schematic diagram of the second part of the first embodiment of the roof tile clamp of the present invention;

[0021] Figure 7 This is a schematic diagram of the third part of the first embodiment of the roof tile clamp of the present invention;

[0022] Figure 8 Schematic diagram of the combined structural state of photovoltaic roof tiles clamped by the first embodiment of the roof tile clamp of the present invention;

[0023] Figure 9 Schematic diagram of the exploded structural state of a photovoltaic roof tile clamped by the first embodiment of the roof tile clamp of the present invention;

[0024] Figure 10 yes Figure 1 An enlarged view of portion C in the middle, wherein the positioning structure of the roof tile clamp of the present invention in the first embodiment enters the clamping space but does not unfold into a triangular shape;

[0025] Figure 11 yes Figure 1 An enlarged view of section C in the middle, wherein the positioning structure of the roof tile clamp of the present invention in the first embodiment enters the clamping space and unfolds into a triangular shape;

[0026] Figure 12 yes Figure 8 Enlarged view of part D in the middle;

[0027] Figure 13 This is a schematic diagram of the assembly of a second embodiment of the roof tile clamp of the present invention;

[0028] Figure 14 This is a schematic diagram of the first part of the second embodiment of the roof tile clamp of the present invention;

[0029] Figure 15This is a schematic diagram of the second part of the second embodiment of the roof tile clamp of the present invention;

[0030] Figure 16 This is a schematic diagram of the third part of the second embodiment of the roof tile clamp of the present invention;

[0031] Figure 17 Schematic diagram of the combined structural state of photovoltaic roof tiles clamped by the second embodiment of the roof tile clamp of the present invention;

[0032] Figure 18 The positioning structure of the second embodiment of the roof tile clamp of the present invention enters the clamping space. Figure 1 Magnified view of part C. DETAILED DESCRIPTION

[0033] The following exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. If there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of devices, products and / or methods consistent with some aspects of the present invention as described in the claims of the present invention.

[0034] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention. The singular forms "a", "an", "the" or "the" used in the specification and claims of the present invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0035] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but rather indicate the existence of at least one. Unless otherwise specified, the words "front", "back", "left", "right", "upper", "lower" and other similar words appearing in the present invention are only for the convenience of explanation and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprises" are open-ended expressions, meaning that the elements appearing before "include" or "comprises" include the elements appearing after "include" or "comprises" and their equivalents, which does not exclude that the elements appearing before "include" or "comprises" may also include other elements. If "several" appears in the present invention, its meaning refers to two or more.

[0036] Please refer to Figures 1 to 18As shown, the present invention discloses a roof tile clamp 100, comprising a mounting plate 1, and a first straight leg 2 and a second curved leg 3 positioned below and opposite to each other. The mounting plate 1 extends horizontally in the left-right direction, and the first straight leg 2 extends vertically in the up-down direction. The mounting plate 1 is integrally connected to at least one of the first straight leg 2 and the second curved leg 3, with a triangular clamping space 2030 defined between the first straight leg 2 and the second curved leg 3. When the photovoltaic roof tile 200 is configured such that the corrugation 202 is positioned within the clamping space 2030, the first straight leg 2 is located on one side of the top of the corrugation 202, providing greater strength and primarily providing support during connection. The second curved leg 3 is located on the other side of the top of the corrugation 202 and is more flexible. The second curved leg 3 cooperates with the first straight leg 2 to primarily provide clamping force. Therefore, the roof tile clamp 100 of the present invention can simultaneously meet the dual requirements of support and clamping force.

[0037] Please refer to Figures 1 to 18 And mainly refer to Figure 4 、 Figure 5 as well as Figure 13 、 Figure 14 As shown, the second curved leg portion 3 includes a first straight segment 31 extending away from the first straight leg portion 2 and a second straight segment 32 extending toward the first straight leg portion 2. Because the second curved leg portion 3 has a bend, the second curved leg portion 3 is referred to as a "curved" leg portion. The first straight segment 31 and the second straight segment 32 are both horizontal or inclined, but the first straight segment 31 and the second straight segment 32 cannot both extend horizontally. Please refer to Figure 4 and Figure 5 , the first straight line segment 31 is extended obliquely and the second straight line segment 32 is also extended obliquely; please refer to Figure 13 and Figure 14 , the first straight line segment 31 extends horizontally and the second straight line segment 32 extends obliquely. Such an arrangement can ensure that the clamping space 2030 formed between the first straight leg 2 and the second curved leg 3 is triangular in shape, but the specific form of the triangle is different. It should be emphasized here that the first straight line segment 31 and the second straight line segment 32 cannot be horizontally extended at the same time, in order to ensure that the clamping space 2030 formed between the first straight leg 2 and the second curved leg 3 is triangular in shape; if both the first straight line segment 31 and the second straight line segment 32 extend horizontally, a triangle cannot be formed. Please refer to Figure 5 and Figure 14As shown, the end of the first straight segment 31 and the beginning of the second straight segment 32 are connected to form a sharp bend or a rounded bend, which is related to the processing and forming of the second curved leg 3 in the present invention, that is, the present invention does not limit the processing accuracy of the bending part of the second curved leg 3, and either a sharp bend or a rounded bend is acceptable.

[0038] Please refer to Figures 1 to 18 And mainly refer to Figure 5 、 Figure 6 as well as Figure 14 、 Figure 15 As shown, the first straight leg 2 includes a first vertical segment 21 and a second vertical segment 22 extending integrally. The first vertical segment 21 and the second vertical segment 22 extend along the same (vertical) line, so the first straight leg 2 is referred to as a "straight" leg. The second curved leg 3 includes a third vertical segment 33 disposed opposite and extending parallel to the first vertical segment 21, so that the third vertical segment 33 is located on another (vertical) line. In a specific embodiment, the length of the third vertical segment 33 is 1 / 2 of the length of the first straight leg 2, and the projection length of the first straight segment 31 and the second straight segment 32 on the first straight leg 2 is 1 / 2 of the length of the first straight leg 2. In other words, the "straight" and "curved" portions of the second curved leg 3 bisect the height of the second curved leg 3. This arrangement, on the one hand, provides sufficient dimensions for the first straight leg 2 and the second curved leg 3 to be fixedly connected as one, and on the other hand, provides sufficient dimensions to form the clamping space 2030.

[0039] Please refer to Figures 1 to 12 The embodiment shown in FIG. Figures 13 to 18 In the second embodiment shown, each of the two embodiments of the roof tile clamp 100 of the present invention is further equipped with two fasteners 4. The mounting plate 1, the first vertical section 21, and the third vertical section 33 are each provided with positioning holes 40. One fastener 4 extends through the positioning holes 40 in the first vertical section 21 and the third vertical section 33, while the other fastener 4 extends through the positioning hole 40 in the mounting plate 1. The function of the fasteners 4 is to securely connect two objects to be joined.

[0040] Please refer to Figures 1 to 18 As shown, whether Figures 1 to 12 The embodiment shown is still Figures 13 to 18In the second embodiment shown, the roof tile clamp 100 of the present invention also includes a first foot 51. The first foot 51 extends from the bottom end of the first straight leg 2, which is away from the mounting plate 1, in an integral bend. The purpose of the first foot 51 is to increase the contact area between the roof tile clamp 100 of the present invention and the photovoltaic roof tile 200 located at the bottom of the roof tile clamp 100 of the present invention. This increased contact area facilitates providing a stronger supporting force when connecting the first straight leg 2 to one side of the top of the corrugated tile 202. Therefore, in the roof tile clamp 100 of the present invention, the first foot 51 is more important than the second foot 52 on the other side, which will be described below.

[0041] Please refer to Figures 1 to 12 In the illustrated embodiment 1, the roof tile clamp 100 of the present invention further includes a second foot portion 52. The second foot portion 52 extends integrally from the bottom end of the second bent leg portion 3, away from the mounting plate portion 1, with the first foot portion 51 and the second foot portion 52 extending in opposite directions. The second foot portion 52 also serves to increase the contact area between the roof tile clamp 100 of the present invention and the photovoltaic roof tile 200 located at the bottom of the roof tile clamp 100 of the present invention. However, the increased contact area is on the elastic clamping side. As mentioned above, because the support force required on the supporting side is greater, the increased contact area on the clamping side can also be understood as providing auxiliary support.

[0042] Please refer to Figures 1 to 18 As shown, the present invention also relates to a photovoltaic roof connection system 1000. The photovoltaic roof connection system 1000 includes a photovoltaic support purlin 300, a photovoltaic roof tile 200, and the aforementioned roof tile clamp 100. The roof tile clamp 100 is connected between the photovoltaic support purlin 300 and the photovoltaic roof tile 200. The photovoltaic roof tile 200 includes a tile base 201, corrugations 202 protruding from the tile base 201, and positioning structures 203 protruding from the corrugations 202. The positioning structures 203 enter the clamping space 2030 and are positioned by the roof tile clamp 100. Because the roof tile clamp 100 in the photovoltaic roof connection system 1000 has both the first straight leg 2 and the second curved leg 3, a triangular clamping space 2030 is defined between the first straight leg 2 and the second curved leg 3. When the corrugated sheet 202 of the photovoltaic roof tile 200 is positioned within the clamping space 2030, the first straight leg 2 is located on one side of the top of the corrugated sheet 202 and is stronger, primarily providing support during connection. The second curved leg 3 is located on the other side of the top of the corrugated sheet 202 and is more flexible. The second curved leg 3 cooperates with the first straight leg 2 to primarily provide clamping force. Therefore, the roof tile clamp 100 of the present invention can simultaneously meet the dual requirements of support and clamping force.

[0043] In the second embodiment of the present invention, please refer to Figures 13 to 18 As shown, the positioning structure 203 is a triangle protruding from the photovoltaic roof tile 200. The triangular positioning structure 203 is inserted into the triangular clamping space 2030 between the first straight leg 2 and the second curved leg 3 of the roof tile fixture 100 of the present invention by manually forcing the positioning structure 203 into the clamping space 2030. During this insertion process, the second curved leg 3 and / or the positioning structure 203 are slightly deformed by a certain biasing force, but can then return to their original state.

[0044] In the specific embodiment of the present invention, please refer to Figures 1 to 12 As shown, the difference from the second embodiment is that the tile base plate 201 includes a first plate portion 2011 and a second plate portion 2012. The first plate portion 2011 is integrally provided with a first curling structure 2013 protruding from an edge near the second plate portion 2012, and the second plate portion 2012 is integrally provided with a second curling structure 2014 protruding from an edge near the first plate portion 2011. The second curling structure 2014 is provided outside the first curling structure 2013 to form a covering for the positioning structure 203. The positioning structure 203 can expand into a triangular shape after entering the clamping space 2030. Figure 12 yes Figure 8 The partially enlarged view in FIG clearly shows the curling state formed by the positioning structure 203, wherein the positioning structure 203 includes at least two bends, which are respectively identified as a first bend 2031 and a second bend 2032. Before unfolding, the first bend 2031 is bent 180 degrees from top to bottom, and the second bend 2032 is bent 180 degrees from bottom to top. In other words, because the bends are contracted, the positioning structure 203 formed by the curling in Example 1 can smoothly enter the triangular clamping space 2030 without requiring much manpower when entering the triangular clamping space 2030; after the positioning structure 203 enters the clamping space 2030, the curling positioning structure 203 unfolds again into a triangular shape (at this time, the bend becomes stretched and no longer 180 degrees), perfectly cooperating with the clamping space 2030, preventing the positioning structure 203 from accidentally escaping from the clamping space 2030 again. The principle of the first embodiment is similar to bean sprouts put into a bottle, which are difficult to take out of the bottle after being full.

[0045] Please refer to Figures 1 to 18 And focus on reference Figures 1 to 3As shown, the photovoltaic roof connection system 1000 of the present invention also includes a plurality of photovoltaic modules 400 and a plurality of pressing blocks 500. The photovoltaic modules 400 are arranged in at least one row, and the pressing blocks 500 include side pressing blocks 501 and middle pressing blocks 502. The side pressing blocks 501 are used to press the two outermost photovoltaic modules 400 in a row onto the photovoltaic support purlin 300, and the middle pressing blocks 502 are used to press the two adjacent photovoltaic modules 400 in a row onto the photovoltaic support purlin 300. The function and principle of the pressing blocks 500 are well known to those skilled in the art and will not be elaborated herein.

[0046] It should be noted that the mounting plate portion 1 and the second curved leg portion 3 in the first embodiment of the present invention are integrally formed, and the mounting plate portion 1 and the first straight leg portion 2 in the second embodiment of the present invention are integrally formed. In other embodiments not shown, the mounting plate portion 1, the first straight leg portion 2, and the second curved leg portion 3 can also be integrally formed. When the three are integrally formed, there is no need to use fasteners 4 to achieve a fixed connection between the first straight leg portion 2 and the second curved leg portion 3. Therefore, the mounting plate portion 1 is integrally connected to at least one of the first straight leg portion 2 and the second curved leg portion 3.

[0047] It should be noted that the roof tile clamp 100 and the photovoltaic roof tile 200 in the present invention are both one of an integrated structure and a split structure.

[0048] In summary, the roof tile clamp 100 in the photovoltaic roof connection system 1000 of the present invention includes a first straight leg 2 and a second curved leg 3. The first straight leg 2 is located on one side of the top of the corrugated tile 202 and is stronger, primarily providing support during connection. The second curved leg 3 is located on the other side of the top of the corrugated tile 202 and is more flexible. The second curved leg 3 cooperates with the first straight leg 2 to primarily provide clamping force. Therefore, the roof tile clamp 100 of the present invention can simultaneously meet the dual requirements of support and clamping force.

[0049] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of the present invention should be based on those skilled in the art. Although this specification describes the present invention in detail with reference to the above embodiments, those skilled in the art should understand that those skilled in the art can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A roof tile clamp, characterized by: The invention comprises a mounting plate portion (1) and a first straight leg portion (2) and a second curved leg portion (3) located below the mounting plate portion (1) and arranged opposite to each other, wherein the mounting plate portion (1) extends horizontally in the left-right direction and the first straight leg portion (2) extends vertically in the up-down direction; the mounting plate portion (1) is integrally connected to at least one of the first straight leg portion (2) and the second curved leg portion (3); and a triangular clamping space (2030) is provided between the first straight leg portion (2) and the second curved leg portion (3).

2. The roof tile clamp according to claim 1, characterized in that: The second curved leg portion (3) comprises a first straight segment (31) extending in a direction away from the first straight leg portion (2) and a second straight segment (32) extending in a direction close to the first straight leg portion (2); the first straight segment (31) and the second straight segment (32) are both horizontal or inclined, but the first straight segment (31) and the second straight segment (32) cannot be horizontal at the same time; the end of the first straight segment (31) and the beginning of the second straight segment (32) are connected to form a sharp angle bend or a rounded angle bend.

3. The roof tile clamp according to claim 2, characterized in that: The first straight leg portion (2) comprises a first vertical segment (21) and a second vertical segment (22) extending integrally; the second curved leg portion (3) comprises a third vertical segment (33) arranged opposite to and extending parallel to the first vertical segment (21); the length of the third vertical segment (33) is 1 / 2 of the length of the first straight leg portion (2); and the projection lengths of the first straight segment (31) and the second straight segment (32) on the first straight leg portion (2) are 1 / 2 of the length of the first straight leg portion (2).

4. The roof tile clamp according to claim 3, characterized in that: Two fasteners (4) are also provided, and the mounting plate portion (1), the first vertical section (21) and the third vertical section (33) are all provided with positioning holes (40), one of the fasteners (4) passes through the positioning hole (40) on the first vertical section (21) and the positioning hole (40) on the third vertical section (33), and the other fastener (4) passes through the positioning hole (40) on the mounting plate portion (1).

5. The roof tile clamp according to claim 1, characterized in that: It also includes a first foot (51), which is integrally bent and extended from the bottom end of the first straight leg (2) away from the mounting plate (1).

6. The roof tile clamp according to claim 5, characterized in that: It also includes a second foot (52), which is bent and extended integrally from the second bent leg (3) away from the bottom end of the mounting plate (1), and the first foot (51) and the second foot (52) extend in opposite directions.

7. A photovoltaic roof connection system, characterized by: The invention comprises a photovoltaic support purlin (300), a photovoltaic roof tile (200) and a roof tile clamp (100) as described in any one of claims 1 to 6 above, wherein the roof tile clamp (100) is connected between the photovoltaic support purlin (300) and the photovoltaic roof tile (200), and the photovoltaic roof tile (200) comprises a tile base plate (201), corrugations (202) protruding from the tile base plate (201) and a positioning structure (203) protruding from the corrugations (202), and the positioning structure (203) enters the clamping space (2030) and is clamped and positioned by the roof tile clamp (100).

8. The photovoltaic roof connection system according to claim 7, characterized in that: The positioning structure (203) is a triangle protruding from the photovoltaic roof tile (200).

9. The photovoltaic roof connection system according to claim 7, characterized in that: The tile base plate (201) comprises a first plate portion (2011) and a second plate portion (2012); the first plate portion (2011) is integrally provided with a first curling structure (2013) near the edge of the second plate portion (2012); the second plate portion (2012) is integrally provided with a second curling structure (2014) near the edge of the first plate portion (2011); the second curling structure (2014) is provided outside the first curling structure (2013) to form the positioning structure (203) in a wrapped shape; and the positioning structure (203) can be unfolded into a triangular shape after entering the clamping space (2030).

10. The photovoltaic roof connection system according to claim 7, wherein: The invention also comprises a plurality of photovoltaic assemblies (400) and a plurality of pressing blocks (500), wherein the photovoltaic assemblies (400) are arranged in at least one row, and the pressing blocks (500) comprise side pressing blocks (501) and middle pressing blocks (502), wherein the side pressing blocks (501) are used for pressing two photovoltaic assemblies (400) located on the outermost sides of a row of photovoltaic assemblies (400) onto the photovoltaic support purlin (300), and the middle pressing blocks (502) are used for respectively pressing two adjacent photovoltaic assemblies (400) in a row of photovoltaic assemblies (400) onto the photovoltaic support purlin (300).

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