Self-locking and anti-loosening structure of photovoltaic support and basic connecting piece

Abstract

The invention provides a self-locking and anti-loosening structure of a photovoltaic support and a basic connecting piece, and relates to the technical field of self-locking and anti-loosening structures. The self-locking and anti-loosening structure of the photovoltaic support and the foundation connecting piece comprises a plurality of self-locking mechanisms, a plurality of anti-loosening mechanisms, two vertical rods, two cross rods and four connecting piece bodies, and the plurality of self-locking mechanisms comprise a plurality of bolts, a plurality of reinforcing rings, a plurality of upper nuts, a plurality of lower nuts and a plurality of limiting rings. The bolt is sleeved with the upper nut, the bolt is sleeved with the lower nut, when the bolt is sleeved with the lower nut, the limiting block slides into the limiting groove, the lower bolt can be rotated by upwards supporting the limiting ring, the embedded ring of the lower bolt enters the inner groove, the annular groove is clamped into the annular groove, and therefore the lower nut is fixed more firmly; and the limiting ring is clamped with the convex block due to the reduction of self weight, so that rotation is limited, the nut is self-locked and clamped more firmly, and the connecting piece main body is effectively prevented from loosening.

Description

Technical Field

[0001] The invention relates to the technical field of self-locking and anti-loosening structures, and in particular to a self-locking and anti-loosening structure for a photovoltaic support and a basic connecting piece. Background Art

[0002] The photovoltaic bracket is an indispensable part of the photovoltaic system. Its main function is to support and fix the photovoltaic modules, ensure that the modules are facing the sun at the best angle, and improve the power generation efficiency. The photovoltaic bracket is fixed to the ground through the foundation connector. The foundation connector is a component that firmly installs the bracket on the foundation. The bracket or support device connecting the bracket and the foundation is usually fixed with bolts or welding.

[0003] Most of the existing photovoltaic brackets are fixed to the basic connectors by bolts. When fixing, the bolts are first passed through the photovoltaic bracket and the basic connector, and then the nuts are screwed on to fix them. The bolts are exposed to the air. After being exposed to wind and rain for a long time, the bolts are easily corroded and loosened, which will cause the connectors to loosen. The loose connectors will affect the stability of the photovoltaic modules. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a self-locking and anti-loosening structure for the photovoltaic bracket and the basic connecting piece, which solves the problem that the bolts fixing the existing connecting piece and the photovoltaic bracket are easily loosened during long-term use, resulting in loosening of the connecting piece.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-locking and anti-loosening structure of a photovoltaic bracket and a basic connecting piece, including multiple self-locking mechanisms, multiple anti-loosening mechanisms, two vertical rods, two horizontal rods and four connecting piece bodies, multiple self-locking mechanisms including multiple bolts, multiple reinforcing rings, multiple upper nuts, multiple lower nuts, multiple limiting rings, multiple upper end surfaces of the bolts are fixedly provided with hexagonal blocks, multiple lower end surfaces of the bolts are provided with limiting grooves at the front and rear sides, multiple upper end surfaces of the upper nuts and lower The end faces are all fixedly provided with a first tooth block, the lower end faces of the four upper nuts are all provided with an inner groove, the inner walls of the multiple inner grooves are all provided with three ring grooves, the upper end faces of the multiple lower nuts are all fixedly provided with a second tooth block, the inner sides of the upper end faces of the multiple lower nuts are all fixedly provided with an embedded ring, the outer end faces of the multiple embedded rings are all fixedly provided with three ring blocks, the lower end faces of the multiple lower nuts are all fixedly provided with a lower ring, the inner bottom surfaces of the multiple lower rings are all fixedly provided with a plurality of protrusions, and the front inner walls and rear inner walls of the multiple limit rings are all fixedly provided with limit blocks;

[0008] The multiple anti-loosening mechanisms include multiple anti-slipping blocks, multiple diagonal plates and multiple slides. A hexagonal groove is opened in the middle position of the lower end surface of the multiple anti-slipping blocks. Two buffer rods are fixedly provided on the end surfaces on opposite sides of the multiple diagonal plates. Two long blocks are fixedly provided on the end surfaces on opposite sides of the multiple diagonal plates. Second magnets are embedded in the top surfaces of the multiple hexagonal grooves.

[0009] Preferably, the inner walls of the four connecting member bodies are hingedly provided with docking members, the lower end surfaces of the four docking members are fixedly provided with inner rods, the outer end surfaces of the four inner rods are slidably sleeved with outer rods, the lower end surfaces of the four outer rods are fixedly provided with bottom plates, and the four connecting members are fixedly provided on the lower end surfaces of the two vertical rods through multiple self-locking mechanisms.

[0010] Preferably, two long grooves are provided on both side end faces of the multiple hexagonal blocks, the multiple long blocks are respectively slidably set on the inner walls of the multiple long grooves, the multiple hexagonal blocks are respectively slidably set on the inner walls of the multiple hexagonal grooves, the first magnets are embedded in the middle positions of the upper end faces of the multiple hexagonal blocks, and the multiple first magnets are magnetically connected to the multiple second magnets.

[0011] Preferably, a soft pad is fixedly provided on the upper end surfaces of the plurality of reinforcement rings, a soft film is fixedly provided on the outer side and the inner side of the upper end surfaces of the plurality of reinforcement rings, and the plurality of reinforcement rings are slidably sleeved on the outer end surfaces of the plurality of bolts respectively.

[0012] Preferably, the plurality of upper nuts are respectively threadedly sleeved on the outer end surfaces of the plurality of bolts, the plurality of embedded rings are respectively slidably sleeved on the inner walls of the plurality of inner grooves, and the plurality of ring blocks are respectively slidably disposed on the inner walls of the plurality of ring grooves.

[0013] Preferably, the multiple lower nuts are respectively threaded on the outer end surfaces of the multiple bolts, the multiple lower end surfaces of the multiple limit rings are provided with multiple grooves, the multiple protrusions are respectively slidably set on the inner walls of the multiple grooves, the multiple limit rings are respectively slidably set on the inner walls of the multiple lower rings, and the multiple limit blocks are respectively slidably set on the inner walls of the multiple limit grooves.

[0014] Preferably, the front end faces and rear end faces of the plurality of anti-slip blocks are provided with slide grooves, connecting blocks are fixedly arranged between the plurality of slide plates and the plurality of diagonal plates, and the plurality of connecting blocks are slidably arranged on the inner walls of the plurality of slide grooves respectively.

[0015] Preferably, the inner walls on both sides of the plurality of anti-slip blocks are provided with buffer grooves, the plurality of diagonal plates are respectively slidably arranged on the inner walls of the plurality of buffer grooves, and the plurality of buffer rods are respectively fixedly arranged between the plurality of buffer grooves and the plurality of diagonal plates.

[0016] Working principle: When installing the photovoltaic bracket, fix the main body of the connector under the vertical rod through the self-locking mechanism, and then fix the cross bar on the vertical rod through the self-locking mechanism, and buckle the anti-loosening mechanism on the self-locking mechanism. When using the self-locking mechanism, first pass the bolt through the installation hole, put on the reinforcing ring and press it on the surface of the hole, then rotate the upper nut to put it on the bolt, lift the limit ring upward, slide the limit block into the inner wall of the limit groove, rotate the lower nut to put it on the bolt, insert the embedded ring on the lower nut into the inner wall of the inner groove of the upper nut, and the ring block is stuck in the inner wall of the ring groove. The second tooth block on the lower nut forms a card connection with the first tooth block of the upper nut. The two nuts are clamped together and rotate in opposite directions. After the lower nut is installed, the limit ring is loosened and its own weight drops, so that the protrusion is clamped into the inner wall of the groove to form a restriction, thereby limiting the rotation of the lower nut. The bolt forms a self-locking function, and the slide plates are sliding to both sides to allow the connecting block to drive the diagonal plate to slide on the inner wall of the buffer groove, so that the anti-slip block can be buckled on the hexagonal block. The slide plate is loosened, and the buffer rod drags the long plate of the diagonal plate to be clamped into the inner wall of the long groove to form a fixation. In addition, the first magnet of the hexagonal block and the second magnet of the hexagonal groove attract each other to enhance the stability of the fixation. The anti-loosening mechanism enhances the friction between the hexagonal block and the hexagonal part.

[0017] (III) Beneficial effects

[0018] The present invention provides a self-locking and anti-loosening structure for a photovoltaic bracket and a basic connector.

[0019] Beneficial effects:

[0020] 1. The present invention provides a self-locking and anti-loosening structure for a photovoltaic bracket and a basic connector. A hexagonal block is arranged inside the self-locking mechanism, and a bolt is arranged below the hexagonal block. When installing the connecting body, the bolt is inserted into the installation hole and the reinforcing ring is put on the bolt. Then the first nut is screwed into the bolt through a thread. The first nut squeezes the reinforcing ring, and the first tooth block on the first nut forms a card connection with the bottom of the reinforcing ring, thereby strengthening the fixation of the first nut. In addition, a soft pad and a soft film are arranged on the reinforcing ring. The soft film and the soft pad have elastic force, so that the reinforcing ring has an antagonistic force, thereby forming a self-locking function.

[0021] 2. The present invention provides a self-locking and anti-loosening structure for a photovoltaic bracket and a basic connecting piece. The upper nut is put on the bolt, and then the lower nut is put on the bolt. When the lower nut is put into the bolt, the limit block slides into the limit groove. The lower bolt can be rotated by pushing the limit ring upward. The embedded ring of the lower bolt enters the inner ring groove of the inner groove and is clamped in the inner ring groove, so that the lower nut is fixed more firmly. In addition, the limit ring is reduced by its own weight and forms a clamping connection with the protrusion, thereby limiting rotation, making the nut self-locking and clamping more firmly, thereby effectively preventing the main body of the connecting piece from loosening.

[0022] 3. The present invention provides a self-locking and anti-loosening structure for a photovoltaic bracket and a basic connector. The anti-loosening mechanism can be stuck on the self-locking mechanism, and the slide plate can be slid to both sides to drive the diagonal plate to slide, so that the diagonal plate squeezes the buffer rod to place the anti-loosening block on the diagonal block, and the slide plate buffer rod is loosened to push the diagonal block to press on the hexagonal block. The friction of the hexagonal block is strengthened by the anti-loosening block, thereby effectively preventing the bolts from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an axonometric schematic diagram of the photovoltaic support of the present invention;

[0024] Figure 2 It is an axonometric schematic diagram of the present invention;

[0025] Figure 3 It is the explosion schematic diagram of the present invention;

[0026] Figure 4 It is a bottom-sectional schematic diagram of the upper nut of the present invention;

[0027] Figure 5 It is a schematic diagram of a bottom cross-section of the lower nut of the present invention;

[0028] Figure 6 It is a bottom view schematic diagram of the anti-falling block of the present invention;

[0029] Figure 7 It is a top cross-sectional schematic diagram of the anti-falling block of the present invention.

[0030] Among them, 1. self-locking mechanism; 2. horizontal rod; 3. vertical rod; 4. connecting part body; 5. docking part; 6. inner rod; 7. outer rod; 8. bottom plate; 9. anti-loosening mechanism; 101. upper nut; 102. lower nut; 103. bolt; 104. limit groove; 105. reinforcement ring; 106. cushion; 107. soft film; 108. first magnet; 109. hexagonal block; 110. long slot; 111. first tooth block; 112. inner Groove; 113, second tooth block; 114, lower ring; 115, ring block; 116, embedded ring; 117, ring groove; 118, protrusion; 119, limit ring; 120, limit block; 121, groove; 901, anti-drop block; 902, slide plate; 903, second magnet; 904, hexagonal groove; 905, long block; 906, diagonal plate; 907, connecting block; 908, slide groove; 909, buffer groove; 910, buffer rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example:

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the embodiment of the present invention provides a self-locking and anti-loosening structure of a photovoltaic bracket and a basic connector, including multiple self-locking mechanisms 1, multiple anti-loosening mechanisms 9, two vertical rods 3, two horizontal rods 2 and four connector bodies 4, multiple self-locking mechanisms 1 include multiple bolts 103, multiple reinforcing rings 105, multiple upper nuts 101, multiple lower nuts 102, and multiple limiting rings 119. The upper end surfaces of the multiple bolts 103 are fixedly provided with hexagonal blocks 109, the front and rear sides of the lower end surfaces of the multiple bolts 103 are provided with limiting grooves 104, and the upper and lower end surfaces of the multiple upper nuts 101 are fixedly provided with first Tooth block 111, the lower end surfaces of the four upper nuts 101 are all provided with inner grooves 112, the inner walls of the multiple inner grooves 112 are all provided with three annular grooves 117, the upper end surfaces of the multiple lower nuts 102 are all fixedly provided with second tooth blocks 113, the inner sides of the upper end surfaces of the multiple lower nuts 102 are all fixedly provided with embedded rings 116, the outer end surfaces of the multiple embedded rings 116 are all fixedly provided with three annular blocks 115, the lower end surfaces of the multiple lower nuts 102 are all fixedly provided with lower rings 114, the inner bottom surfaces of the multiple lower rings 114 are all fixedly provided with multiple protrusions 118, and the front inner walls and rear inner walls of the multiple limit rings 119 are all fixedly provided with limit blocks 120.

[0034] The inner walls of the four connecting member bodies 4 are hingedly provided with docking members 5, the lower end surfaces of the four docking members 5 are fixedly provided with inner rods 6, the outer end surfaces of the four inner rods 6 are slidably sleeved with outer rods 7, the lower end surfaces of the four outer rods 7 are fixedly provided with bottom plates 8, and the four connecting members are fixedly provided on the lower end surfaces of the two vertical rods 3 through multiple self-locking mechanisms 1.

[0035] The end surfaces of the two sides of the multiple hexagonal blocks 109 are provided with two long grooves 110, the multiple long blocks 905 are respectively slidably arranged on the inner walls of the multiple long grooves 110, the multiple hexagonal blocks 109 are respectively slidably arranged on the inner walls of the multiple hexagonal grooves 904, the middle positions of the upper end surfaces of the multiple hexagonal blocks 109 are embedded with first magnets 108, the multiple first magnets 108 are magnetically connected to the multiple second magnets 903, the upper end surfaces of the multiple reinforcing rings 105 are fixedly provided with soft pads 106, the outer sides and the inner sides of the upper end surfaces of the multiple reinforcing rings 105 are fixedly provided with soft films 107, and the multiple reinforcing rings 105 are respectively slidably sleeved on the multiple bolts 103 On the outer end surface, multiple upper nuts 101 are respectively threadedly sleeved on the outer end surfaces of multiple bolts 103, multiple embedded rings 116 are respectively slidably sleeved on the inner walls of multiple inner grooves 112, multiple ring blocks 115 are respectively slidably set on the inner walls of multiple ring grooves 117, multiple lower nuts 102 are respectively threadedly set on the outer end surfaces of multiple bolts 103, multiple limit rings 119 have multiple grooves 121 on the lower end surfaces, multiple protrusions 118 are respectively slidably set on the inner walls of multiple grooves 121, multiple limit rings 119 are respectively slidably set on the inner walls of multiple lower rings 114, and multiple limit blocks 120 are respectively slidably set on the inner walls of multiple limit grooves 104.

[0036] Specifically, when installing the photovoltaic bracket, the connecting part body 4 is fixed under the vertical rod 3 through the self-locking mechanism 1, and then the cross bar 2 is fixed on the vertical rod 3 through the self-locking mechanism 1, and the inner rod 6 of the photovoltaic bracket can slide inside the outer rod 7 to adjust the height of the bracket, and the anti-loosening mechanism 9 is buckled on the self-locking mechanism 1. When the self-locking mechanism 1 is in use, the bolt 103 is first passed through the installation hole, and the reinforcing ring 105 is put on and pressed on the surface of the hole. A soft pad 106 and a soft film 107 are provided on the reinforcing ring 105. The soft film 107 and the soft pad 106 have elastic force, so that the firmness of the nut fixation is improved by the reinforcing ring 105, and then the upper nut 101 is rotated to be put on the bolt 103, and the limit ring 119 is lifted up to allow the limit block 120 to slide into the inner wall of the limit groove 104, and the limit ring 119 lifted up allows the protrusion 118 and the groove 12 1 is loosened and clamped, so that the limiting ring 119 can rotate, and the lower nut 102 is rotatably sleeved on the bolt 103, and the embedded ring 116 on the lower nut 102 is inserted into the inner wall of the inner groove 112 of the upper nut 101, and the ring block 115 is clamped into the inner wall of the ring groove 117, and the second tooth block 113 on the lower nut 102 is clamped with the first tooth block 111 of the upper nut 101, so that the two nuts are clamped, and the two nuts are in opposite rotation directions. After the lower nut 102 is installed, the limiting ring 119 is loosened. The limiting ring 119 is reduced by its own weight, so that the protrusion 118 is clamped into the inner wall of the groove 121 to form a restriction, thereby limiting the rotation of the lower nut 102, and the bolt 103 is self-locking, so that the connector body 4 is fixed more firmly. Because there are multiple structures to cooperate with the clamping, the corrosion of individual structures will not affect the stability of the fixation.

[0037] like Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, the multiple anti-loosening mechanisms 9 include multiple anti-slipping blocks 901, multiple diagonal plates 906 and multiple slide plates 902. A hexagonal groove 904 is provided in the middle position of the lower end surface of the multiple anti-slipping blocks 901, two buffer rods 910 are fixedly provided on the end surfaces of the opposite sides of the multiple diagonal plates 906, two long blocks 905 are fixedly provided on the end surfaces of the opposite sides of the multiple diagonal plates 906, and a second magnet 903 is embedded in the top surface of the multiple hexagonal grooves 904.

[0038] The front end faces and rear end faces of the multiple anti-slip blocks 901 are both provided with sliding grooves 908, the multiple sliding plates 902 and the multiple diagonal plates 906 are both fixedly provided with connecting blocks 907, the multiple connecting blocks 907 are respectively slidably set on the inner walls of the multiple sliding grooves 908, the inner walls on both sides of the multiple anti-slip blocks 901 are both provided with buffer grooves 909, the multiple diagonal plates 906 are respectively slidably set on the inner walls of the multiple buffer grooves 909, and the multiple buffer rods 910 are respectively fixedly set between the multiple buffer grooves 909 and the multiple diagonal plates 906.

[0039] Specifically, slide the slide plate 902 to both sides to allow the connecting block 907 to drive the diagonal plate 906 to slide on the inner wall of the buffer groove 909, so that the anti-loosening block 901 can be buckled on the hexagonal block 109, and the slide plate 902 is released. The buffer rod 910 drags the long plate of the diagonal plate 906 into the inner wall of the long groove 110 to form a fixation, and the first magnet 108 of the hexagonal block 109 and the second magnet 903 of the hexagonal groove 904 attract each other to enhance the stability of the fixation. The anti-loosening mechanism 9 increases the friction between the hexagonal block 109 and the hexagonal part, thereby preventing the bolt 103 from loosening and strengthening the firmness of the fixing of the connecting part body 4.

[0040] 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 self-locking and anti-loosening structure for a photovoltaic support and a basic connecting piece, comprising a plurality of self-locking mechanisms (1), a plurality of anti-loosening mechanisms (9), two vertical rods (3), two horizontal rods (2) and four connecting piece bodies (4), characterized in that: The plurality of self-locking mechanisms (1) comprise a plurality of bolts (103), a plurality of reinforcing rings (105), a plurality of upper nuts (101), a plurality of lower nuts (102), and a plurality of limiting rings (119); the upper end surfaces of the plurality of bolts (103) are fixedly provided with a hexagonal block (109); the front and rear sides of the lower end surfaces of the plurality of bolts (103) are provided with a limiting groove (104); the upper and lower end surfaces of the plurality of upper nuts (101) are fixedly provided with a first tooth block (111); the lower end surfaces of the four upper nuts (101) are provided with an inner groove (112); the plurality of inner grooves (112) are provided with a plurality of Three annular grooves (117) are provided on the inner wall; a second tooth block (113) is fixedly provided on the upper end surface of the plurality of lower nuts (102); an embedded ring (116) is fixedly provided on the inner side of the upper end surface of the plurality of lower nuts (102); three annular blocks (115) are fixedly provided on the outer end surface of the plurality of embedded rings (116); a lower ring (114) is fixedly provided on the lower end surface of the plurality of lower nuts (102); a plurality of protrusions (118) are fixedly provided on the inner bottom surface of the plurality of lower rings (114); and a plurality of limiting blocks (120) are fixedly provided on the front inner wall and the rear inner wall of the plurality of limiting rings (119); The plurality of anti-loosening mechanisms (9) comprise a plurality of anti-loosening blocks (901), a plurality of diagonal plates (906) and a plurality of slide plates (902); a hexagonal groove (904) is provided in the middle of the lower end surface of the plurality of anti-loosening blocks (901); two buffer rods (910) are fixedly provided on the end surfaces on opposite sides of the plurality of diagonal plates (906); two long blocks (905) are fixedly provided on the end surfaces on opposite sides of the plurality of diagonal plates (906); and a second magnet (903) is embedded in the top surface of the plurality of hexagonal grooves (904).

2. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: The inner walls of the four connecting member bodies (4) are hingedly provided with docking members (5), the lower end surfaces of the four docking members (5) are fixedly provided with inner rods (6), the outer end surfaces of the four inner rods (6) are slidably sleeved with outer rods (7), the lower end surfaces of the four outer rods (7) are fixedly provided with bottom plates (8), and the four connecting members are respectively fixedly provided on the lower end surfaces of the two vertical rods (3) through a plurality of self-locking mechanisms (1).

3. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: Two long grooves (110) are provided on both side end surfaces of the plurality of hexagonal blocks (109); the plurality of long blocks (905) are respectively slidably arranged on the inner walls of the plurality of long grooves (110); the plurality of hexagonal blocks (109) are respectively slidably arranged on the inner walls of the plurality of hexagonal grooves (904); the middle positions of the upper end surfaces of the plurality of hexagonal blocks (109) are respectively embedded with first magnets (108); the plurality of first magnets (108) are magnetically connected to the plurality of second magnets (903).

4. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: A soft pad (106) is fixedly arranged on the upper end surfaces of the plurality of reinforcing rings (105), a soft film (107) is fixedly arranged on the outer side and the inner side of the upper end surfaces of the plurality of reinforcing rings (105), and the plurality of reinforcing rings (105) are respectively slidably sleeved on the outer end surfaces of the plurality of bolts (103).

5. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: The plurality of upper nuts (101) are respectively threadedly sleeved on the outer end surfaces of the plurality of bolts (103), the plurality of embedded rings (116) are respectively slidably sleeved on the inner walls of the plurality of inner grooves (112), and the plurality of ring blocks (115) are respectively slidably arranged on the inner walls of the plurality of ring grooves (117).

6. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: The plurality of lower nuts (102) are respectively threadedly sleeved on the outer end surfaces of the plurality of bolts (103); the plurality of lower end surfaces of the plurality of limiting rings (119) are provided with a plurality of grooves (121); the plurality of protrusions (118) are respectively slidably arranged on the inner walls of the plurality of grooves (121); the plurality of limiting rings (119) are respectively slidably arranged on the inner walls of the plurality of lower rings (114); and the plurality of limiting blocks (120) are respectively slidably arranged on the inner walls of the plurality of limiting grooves (104).

7. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: The front and rear faces of the plurality of anti-slip blocks (901) are provided with sliding grooves (908), and connecting blocks (907) are fixedly arranged between the plurality of slide plates (902) and the plurality of diagonal plates (906), and the plurality of connecting blocks (907) are respectively slidably arranged on the inner walls of the plurality of sliding grooves (908).

8. The self-locking and anti-loosening structure of the photovoltaic bracket and the basic connecting piece according to claim 1 is characterized in that: The inner walls of both sides of the plurality of anti-slip blocks (901) are provided with buffer grooves (909), the plurality of diagonal plates (906) are respectively slidably arranged on the inner walls of the plurality of buffer grooves (909), and the plurality of buffer rods (910) are respectively fixedly arranged between the plurality of buffer grooves (909) and the plurality of diagonal plates (906).

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