Bridge and photovoltaic array

Abstract

The utility model discloses a bridge which comprises side frames and a middle bridge. The number of the side frames is two, and the two side frames are used for being fixed to two adjacent photovoltaic group strings respectively. The middle bridge is mounted on the side frame; the middle bridge comprises a cantilever and a supporting arm; one end of the cantilever is rotatably mounted on the side frame, the other end of the cantilever is a free end, and the end, rotatably connected with the side frame, of the cantilever is opposite to the free end of the cantilever; the supporting arms are fixedly connected with the side frames and the cantilevers respectively; the fixing position of the supporting arm on the cantilever can be adjusted, and / or the position, used for being fixedly connected with the cantilever, in the supporting arm can be adjusted. In the bridge frame, the middle bridge adopts the cantilever to support the middle wheel of the photovoltaic cleaning robot, and the cantilever is only connected with one side frame, so that the phenomenon that a walking wheel supporting bridge with an inner pipe and an outer pipe in the prior art is generally separated is avoided. The utility model also provides a photovoltaic array using the bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment assisting a photovoltaic cleaning robot, and more specifically, to a bridge frame, and also to a photovoltaic array using the bridge frame. Background Art

[0002] See also Figure 1-Figure 4 Photovoltaic modules are generally arranged into photovoltaic arrays at power generation sites. The photovoltaic arrays include photovoltaic module rows. The photovoltaic module rows include multiple photovoltaic strings 20. Different photovoltaic strings 20 are supported by different photovoltaic brackets. In photovoltaic power generation projects, in order to prevent the photovoltaic modules from being dirty and affecting the power generation efficiency, photovoltaic cleaning robots are usually configured to clean the photovoltaic modules. Adjacent photovoltaic strings 20 in the photovoltaic module row are connected by bridges, so that the photovoltaic cleaning robots can clean the photovoltaic strings 20 one by one through the bridges between the photovoltaic strings 20.

[0003] The bridge frame includes two side frames, and an upper bridge, a lower bridge and a wheel support bridge 20 connected between the two side frames; the upper bridge, the lower bridge and the wheel support bridge 20 are used to support the upper wheel, the lower wheel and the middle wheel of the photovoltaic cleaning robot respectively. Among them, the wheel support bridge 20 adopts a sleeve structure, including an outer tube 11 and an inner tube 12 that fit together, and one end of the inner tube 12 and one end of the outer tube 11 are respectively installed on the two side frames through different universal connectors 13. However, when the inclination angle of two adjacent photovoltaic strings is too large, such as Figure 3-4 As shown, the inner tube 12 will come out of the outer tube 11.

[0004] Therefore, how to reduce the occurrence of the situation where the walking wheel support bridge is detached when the inclination angle of two adjacent photovoltaic strings is too large is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a bridge frame, in which the middle bridge uses a cantilever to support the middle wheel of the photovoltaic cleaning robot, and the cantilever is only connected to one side frame, avoiding the use of inner and outer tubes that are plugged into each other. Even if the inclination angles of the two photovoltaic strings connected to the bridge frame are too different, the cantilever is always installed on the side frame under the action of the support arm, and will not be separated like the walking wheel support bridge with inner and outer tubes in the prior art. The utility model also provides a photovoltaic array using the above bridge frame, which is easy to use.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bridge frame, comprising:

[0008] Side frames, two of which are used to be fixed on two adjacent photovoltaic strings respectively;

[0009] An intermediate bridge, wherein the intermediate bridge is mounted on the side frame; the intermediate bridge comprises a cantilever and a support arm; one end of the cantilever is rotatably mounted on the side frame; the support arm is fixedly connected to the side frame and the cantilever respectively; the fixed position of the support arm on the cantilever is adjustable, and / or the position in the support arm for fixed connection with the cantilever is adjustable.

[0010] Optionally, in the above-mentioned bridge frame, the middle bridge also includes a mounting seat fixed to the side frame; one end of the cantilever is rotatably mounted on the mounting seat; the first end of the support arm is fixed to the mounting seat; the second end of the support arm is fixedly connected to the cantilever through a fixing member, and the support arm is located below the cantilever; the support arm, the mounting seat and the cantilever are sequentially connected to form a triangular frame structure.

[0011] Optionally, in the above-mentioned bridge, the cantilever is provided with an elongated hole cooperating with the fixing member, and the elongated hole is arranged along the direction from the end of the cantilever connected to the mounting seat to the free end of the cantilever.

[0012] Optionally, in the above-mentioned bridge frame, there are two intermediate bridges, which are respectively installed on the two side frames; and the free ends of the cantilevers in the two intermediate bridges are close to each other.

[0013] Optionally, in the above-mentioned bridge, the side frames and the photovoltaic components of the photovoltaic strings are fixedly connected via purlins.

[0014] Optionally, in the above-mentioned bridge frame, the cross-section of the purlin is U-shaped, and a first flange and a second flange are respectively provided at both ends of its opening, the first flange is fixedly connected to the side frame, and the second flange is fixedly connected to the frame of the photovoltaic module.

[0015] Optionally, in the above-mentioned bridge frame, a first reinforcement member is provided at the connection between the purlin and the side frame and the frame of the photovoltaic module.

[0016] Optionally, in the above-mentioned bridge frame, the first reinforcement member includes a first bent plate and a second bent plate connected to each other; the first bent plate is located between the second flange and the frame of the photovoltaic component; the first bent plate is also located between the first flange and the side frame; the second bent plate is attached to the end of the purlin.

[0017] Optionally, in the above-mentioned bridge frame, the side frame and the photovoltaic module are also fixedly connected via a connecting seat; the connecting seat is in the shape of an elongated strip, and its two ends along the length direction are respectively fixedly connected to the frame of the photovoltaic module and the side frame; a second reinforcement member is provided at the connection between the connecting seat and the frame of the photovoltaic module.

[0018] Optionally, in the above-mentioned bridge frame, the side frame includes a middle section, an upper section hinged to the middle section and a lower section hinged to the middle section; the middle section is fixedly connected to the photovoltaic module through the purlin; the two ends of the upper bridge in the bridge frame are respectively connected to the upper sections of the two side frames; the two ends of the lower bridge in the bridge frame are respectively connected to the lower sections of the two side frames.

[0019] A photovoltaic array includes a photovoltaic component row, wherein the photovoltaic component row includes a plurality of photovoltaic strings arranged one by one, and adjacent photovoltaic strings are connected by a bridge frame, and the bridge frame is the bridge frame described in any one of the above technical solutions.

[0020] The utility model provides a bridge frame, comprising a side frame and a middle bridge; there are two side frames, and the two side frames are used to be fixed on two adjacent photovoltaic strings respectively; the middle bridge is installed on the side frames; the middle bridge comprises a cantilever and a support arm; one end of the cantilever can be rotatably installed on the side frame, the other end of the cantilever is a free end, and the end of the cantilever that is rotatably connected to the side frame is opposite to the free end of the cantilever; the support arm is fixedly connected to the side frame and the cantilever respectively; the fixing position of the support arm on the cantilever is adjustable, and / or the position of the support arm that is used for fixed connection with the cantilever is adjustable.

[0021] When the above-mentioned bridge is used, the photovoltaic cleaning robot moves from one photovoltaic string to the bridge, and its intermediate wheel moves to the next photovoltaic string under the support of the intermediate bridge.

[0022] In the above-mentioned bridge frame, the middle bridge adopts a cantilever to support the middle wheel of the photovoltaic cleaning robot, and the cantilever is only connected to one side frame of the bridge frame, avoiding the use of inner and outer tubes that are plugged into each other. Even if the inclination angles of the two photovoltaic strings connected to the bridge frame are too different, the cantilever always remains installed on the side frame under the action of the support arm, and will not detach like the walking wheel support bridge with inner and outer tubes in the prior art.

[0023] In addition, after applying the bridge frame provided by the utility model, the situation where the inner and outer tubes are separated from each other as in the prior art will not occur, and there is no need to manually insert and reset the inner and outer tubes after operating and adjusting the inclination angle difference of the two photovoltaic strings, which is easy to use.

[0024] Furthermore, in the above-mentioned bridge frame, the fixed position of the support arm on the cantilever is adjustable, and / or the position in the support arm for fixed connection with the cantilever is adjustable. When assembling the intermediate bridge, by adjusting the fixed position of the support arm on the cantilever and / or adjusting the position in the support arm for fixed connection with the cantilever, the cantilever can be rotated around the side frame, thereby achieving the effect of adjusting the cantilever angle, so that the angle of the cantilever in the assembled intermediate bridge is suitable for the height difference between the two photovoltaic strings, ensuring that the intermediate wheel of the photovoltaic cleaning robot can move smoothly from one photovoltaic string to the next photovoltaic string through the cantilever.

[0025] The utility model also provides a photovoltaic array using the bridge frame, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of two photovoltaic strings connected by a bridge in the prior art;

[0028] Figure 2 It is a structural schematic diagram of the middle bridge of the bridge frame in the prior art;

[0029] Figure 3 It is a structural schematic diagram of the prior art when the difference in the tilt angles of two connected photovoltaic strings is too large;

[0030] Figure 4 It is a structural schematic diagram of the intermediate bridge when the difference in the tilt angles of two connected photovoltaic strings in the prior art is too large;

[0031] Figure 5 A schematic diagram of the structure of the intermediate bridge provided by an embodiment of the utility model;

[0032] Figure 6 A schematic diagram of two intermediate bridges in a bridge frame provided by an embodiment of the utility model cooperating with each other;

[0033] Figure 7 A schematic diagram of the connection structure of a bridge frame and two adjacent photovoltaic strings provided in an embodiment of the utility model;

[0034] Figure 8 for Figure 7 A magnified view of part A;

[0035] Fig. 9 for Figure 8 A magnified view of part B;

[0036] Fig.10 A schematic diagram of assembling the middle bridge and the middle section of the side frame provided in an embodiment of the utility model;

[0037] Fig.11 A schematic diagram of assembling the middle section and the frame of the photovoltaic module provided by the embodiment of the utility model;

[0038] Fig.12A schematic diagram of the assembly of the connecting seat and the second reinforcement member provided in an embodiment of the utility model;

[0039] Fig.13 A schematic diagram of the positional relationship between the frame, the middle section of the side frame and the purlin of the photovoltaic module provided in the embodiment of the utility model;

[0040] Fig.14 A schematic diagram of the assembly of the first reinforcement member and the purlin provided in the embodiment of the utility model;

[0041] Fig.15 A schematic diagram of another angle connection structure of a bridge frame and two adjacent photovoltaic strings provided in an embodiment of the utility model;

[0042] Fig.16 A schematic diagram of the structure of the lower bridge provided by an embodiment of the utility model;

[0043] in, Figure 5-Figure 16 middle:

[0044] Bridge 100; middle bridge 101; mounting seat 111; support arm 112; cantilever 113; side frame 102; upper section 121; middle section 122; lower section 123; upper bridge 103; lower bridge 104; universal joint 11; outer bridge 12; inner bridge 13;

[0045] Photovoltaic module 201 ; frame 211 ; second reinforcement member 202 ; reinforcement plate 221 ; upper pressure plate 222 ; side plate 223 ; connection seat 203 ; first reinforcement member 204 ; first bending plate 241 ; second bending plate 242 ; purlin 205 ; flange 251 . DETAILED DESCRIPTION

[0046] The utility model embodiment discloses a bridge frame, wherein the intermediate bridge adopts a cantilever to support the intermediate wheel of the photovoltaic cleaning robot, and the cantilever is only connected to one side frame, avoiding the use of inner and outer tubes that are plugged into each other. Even if the inclination angles of the two photovoltaic strings connected to the bridge frame are too different, the cantilever is always kept installed on the side frame under the action of the support arm, and will not be separated as in the prior art walking wheel support bridge with inner and outer tubes. The utility model embodiment also provides a photovoltaic array using the above bridge frame, which is easy to use.

[0047] 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.

[0048] See also Figure 5-Figure 16 The embodiment of the utility model provides a bridge frame 100, including a side frame 102 and an intermediate bridge 101; there are two side frames 102, and the two side frames 102 are used to be fixed on two adjacent photovoltaic strings respectively; the intermediate bridge 101 is installed on the side frame 102; the intermediate bridge 101 includes a cantilever 113 and a support arm 112; one end of the cantilever 113 can be rotatably installed on the side frame 102, the other end of the cantilever 113 is a free end, and the end of the cantilever 113 that is rotatably connected to the side frame 102 is opposite to the free end of the cantilever 113; the support arm 112 is fixedly connected to the side frame 102 and the cantilever 113 respectively; the fixed position of the support arm 112 on the cantilever 113 is adjustable, and / or the position of the support arm 112 for fixed connection with the cantilever 113 is adjustable.

[0049] When the bridge frame 100 is used, the photovoltaic cleaning robot moves from one photovoltaic string to the bridge frame 100 , and the intermediate wheels thereof move to the next photovoltaic string under the support of the intermediate bridge 101 .

[0050] In the above-mentioned bridge frame 100, the middle bridge 101 adopts a cantilever 113 to support the middle wheel of the photovoltaic cleaning robot, and the cantilever 113 is only connected to a side frame 102 of the bridge frame 100, avoiding the use of inner and outer tubes that are plugged into each other. Even if the inclination angles of the two photovoltaic strings connected to the bridge frame 100 are too different, the cantilever 113 always remains installed on the side frame 102 under the action of the support arm 112, and will not detach like the walking wheel support bridge with inner and outer tubes in the prior art.

[0051] In addition, after applying the bridge frame provided by the utility model, the situation where the inner and outer tubes are separated from each other as in the prior art will not occur, and there is no need to manually insert and reset the inner and outer tubes after operating and adjusting the inclination angle difference of the two photovoltaic strings, which is easy to use.

[0052] Furthermore, in the above-mentioned bridge frame 100, the fixed position of the support arm 112 on the cantilever 113 is adjustable, and / or the position in the support arm 112 for fixed connection with the cantilever 113 is adjustable. When assembling the intermediate bridge 101, by adjusting the fixed position of the support arm 112 on the cantilever 113 and / or adjusting the position in the support arm 112 for fixed connection with the cantilever 113, the cantilever 113 can be rotated around the side frame 102, so as to achieve the effect of adjusting the angle of the cantilever 113, so that the angle of the cantilever 113 in the assembled intermediate bridge 101 is suitable for the height difference between the two photovoltaic strings, ensuring that the intermediate wheel of the photovoltaic cleaning robot can move smoothly from one photovoltaic string to the next photovoltaic string through the cantilever 113, thereby improving the adaptability of the bridge frame 100 assembly.

[0053] In one embodiment, the middle bridge 101 further includes a mounting seat 111 fixed to the side frame 102; one end of the cantilever 113 is rotatably mounted on the mounting seat 111; the first end of the support arm 112 is fixed to the mounting seat 111; the second end of the support arm 112 is fixedly connected to the cantilever 113 through a fixing member; the support arm 112 is located below the cantilever 113 to prevent the support arm 112 from interfering with the middle wheel of the photovoltaic cleaning robot walking along the top of the cantilever 113. The support arm 112, the mounting seat 111 and the cantilever 113 are sequentially connected to form a triangular frame structure, which has high overall stability and is suitable for bearing the weight of the photovoltaic cleaning robot.

[0054] The cantilever 113 is provided with an elongated hole matched with the above-mentioned fixing member, and the elongated hole is arranged in the direction from the end of the cantilever 113 connected to the mounting seat 111 to the free end of the cantilever 113. The above-mentioned fixing member is inserted and matched with the elongated hole, and the rotation angle of the cantilever 113 relative to the mounting seat 111 can be adjusted by adjusting the position of the fixing member in the elongated hole. The first end of the support arm 112 can be arranged to be fixedly connected to the mounting seat 111 by means of fixing member connection, welding, etc., and the method of fixing the two is not limited in this embodiment.

[0055] In the above-mentioned bridge frame 100, the middle bridge 101 can be set as one, and accordingly, the free end of its cantilever 113 is close to the side frame 102 that is not connected to the mounting seat 111, so that the middle wheel of the photovoltaic cleaning robot passes through the entire bridge frame 100 via one cantilever 113.

[0056] The middle bridge 101 can also be set to two, and the two are respectively installed on the two side frames. In the scheme where the middle bridge 101 includes a mounting seat 111, the mounting seats 111 of the two middle bridges 101 are respectively fixed to the two side frames 102. The free ends of the cantilevers 113 in the two middle bridges 101 are close to each other to ensure that the middle wheels of the photovoltaic cleaning robot can walk through the gap between the free ends of the two cantilevers 113. During installation, first fix the two side frames 102 in the bridge frame 100 to two adjacent photovoltaic strings, and then adjust the angles of the cantilevers 113 in the two middle bridges 101. After the adjustment is completed, the two ends of the support arms 112 in the two middle bridges 101 are respectively fixedly connected to the mounting seat 111 and the cantilever 113 for normal use. In normal use, the gap between the free ends of the cantilevers 113 in the two middle bridges 101 is less than 300mm to ensure that the middle walking wheels of the photovoltaic cleaning robot can smoothly cross the gap.

[0057] At the same time, in the solution provided in this embodiment, the angle of the cantilever 113 in the middle bridge 101 relative to the mounting seat 111 is adjustable, which is conducive to the cantilevers 113 of the two middle bridges 101 forming an angle of 180° or close to 180°, preventing the angle between the two cantilevers 113 from being too small and causing the middle wheel of the photovoltaic cleaning robot to be stuck in the gap between the free ends of the two cantilevers 113, thereby improving the smoothness and reliability of the middle wheel of the photovoltaic cleaning robot passing through the bridge frame.

[0058] like Figure 7 , 8 As shown in FIG. 13 , the side frame 102 and the photovoltaic components 201 of the photovoltaic string are fixedly connected via purlins 205 .

[0059] To facilitate assembly, the purlin 205 is fixedly connected to the side frame 102 and the frame of the photovoltaic module 201 through fixings respectively; further, the mounting holes of the purlin 205 cooperating with the above-mentioned fixings can be set as long holes to adapt to the gap size between the side frame 102 and the photovoltaic module 201, thereby reducing the difficulty of installing the bridge frame 100 and the photovoltaic module 201.

[0060] In one embodiment, the cross section of the purlin 205 is U-shaped, and flanges 251 are provided at both ends of the opening, wherein the first flange is fixedly connected to the side frame 102, and the second flange is fixedly connected to the frame 211 of the photovoltaic module 201. The long strip holes on the purlin 205 that cooperate with the fixing parts are provided on the first flange and the second flange.

[0061] A first reinforcement member 204 may be provided at the connection between the purlin 205 and the side frame 102 and the frame 211 of the photovoltaic module 201. The first reinforcement member 204 is bent, and includes a first bent plate 241 and a second bent plate 242 connected to each other; the first bent plate 241 is located between the second flange and the frame 211 of the photovoltaic module 201, and the second flange, the first bent plate 241 and the frame 211 of the photovoltaic module 201 are connected as a whole through a fixing member penetrating the three; the first bent plate 241 is also located between the first flange and the side frame 102, and the first flange, the first bent plate 241 and the side frame 102 are connected as a whole through a fixing member penetrating the three; the second bent plate 242 is attached to the end of the purlin 205.

[0062] In the technical solution provided by this embodiment, the first reinforcement 204 is connected to the two flanges 251 of the purlin 205, which can strengthen the strength of the purlin 205 itself; at the same time, the first reinforcement 204 is connected to the second flange and the frame 211 of the photovoltaic module 201 through the fixing member, which can improve the connection strength between the purlin 205 and the frame 211 of the photovoltaic module 201; the first reinforcement 204 is connected to the first flange and the side frame 102 through the fixing member, which can improve the connection strength between the purlin 205 and the side frame 102. Obviously, the technical solution provided by this embodiment can ensure that the connection between the bridge 100 and the photovoltaic module 201 has good connection strength, is suitable for photovoltaic cleaning robots with large load-bearing weight, and has high reliability after long-term use.

[0063] The side frame 102 and the photovoltaic module 201 are also fixedly connected via a connecting seat 203 .

[0064] In one embodiment, the connection base 203 is configured in a long strip shape, such as Fig.11 , 12 As shown, the two ends of the connection base 203 along the length direction are fixedly connected to the frame 211 and the side frame 102 of the photovoltaic module 201 respectively; a second reinforcement member 202 is provided at the connection between the connection base 203 and the frame 211 of the photovoltaic module 201.

[0065] The second reinforcement member 202 is wrapped around the frame 211 of the photovoltaic module 201, and includes an upper pressure plate 222, a side plate 223 and a reinforcement plate 221 connected in sequence; the upper pressure plate 222 is attached to the upper surface of the frame 211 (the upper surface of the frame 211 refers to the surface of the frame 211 facing the sunlight when the photovoltaic string generates electricity); the reinforcement plate 221 is clamped between the back side of the frame 211 (the back side of the frame 211 refers to the surface of the frame 211 facing away from the sunlight when the photovoltaic string generates electricity) and the connecting seat 203; the side plate 223 is attached to the side of the frame 211 (the side of the frame 211 is the surface of the frame 211 connecting its upper surface and back surface).

[0066] In the bridge frame provided in this embodiment, the second reinforcement member 202 is configured as a semi-enclosed structure wrapped outside the frame 211 of the photovoltaic component 201, which can disperse the force to a larger area of ​​the frame 211 of the photovoltaic component 201, thereby avoiding excessive force strength at the connection between the frame 211 and the connecting seat 203 and causing damage such as rupture.

[0067] The side frame 102 includes a middle section 122, an upper section 121 hinged to the middle section 122, and a lower section 123 hinged to the middle section 122; the middle section 122 is fixedly connected to the frame 211 of the photovoltaic module 201 through the purlin 205; the two ends of the upper bridge 103 in the bridge frame 100 are respectively connected to the upper sections 121 of the two side frames 102; the two ends of the lower bridge 104 in the bridge frame 100 are respectively connected to the lower sections 123 of the two side frames 102.

[0068] In the above-mentioned bridge frame 100, the structures of the upper bridge 103 and the lower bridge 104 can be set to include an outer bridge 12 and an inner bridge 13 that can be slidably inserted into the outer bridge, and the end of the outer bridge 12 away from the inner bridge 13 is connected to one side frame 102 through a universal joint 11, and the end of the inner bridge 13 away from the outer bridge 12 is connected to the other side frame 102 through a universal joint 11, see Fig.15 A slide groove may be provided on the inner bridge 13 , and a pin that is inserted and matched with the slide groove is fixed on the outer bridge 12 ; the number of the pins may be set to be multiple to guide the sliding direction of the inner bridge 13 .

[0069] In this embodiment, the upper bridge 103 and the lower bridge 104 can be extended and rotated respectively, and will not be disengaged when the difference in the inclination angles of two adjacent photovoltaic strings is too large. There is no need to perform additional insertion and resetting operations on the inner bridge 13 and the outer bridge 12 after the operation and maintenance adjustment of the inclination angles of the two adjacent photovoltaic strings.

[0070] In one embodiment, the middle bridge 101 has two mounting seats 111, and the support arm 112 and the cantilever 113 are respectively sandwiched between the two mounting seats 111. Figure 5 shown.

[0071] The mounting seat 111 includes a first mounting portion and a second mounting portion connected as one body, the first mounting portion is used to mount the support arm 112 and the cantilever arm 113, and the second mounting portion is used to be fixedly connected to the side frame 102. The support arm 112 is fixedly connected to the two mounting seats 111 by means of a fixing member passing through the first mounting portion of one mounting seat 111, the support arm 112 and the first mounting portion of the other mounting seat 111; the cantilever arm 113 is rotatably connected to the two mounting seats 111 by means of a pin passing through the first mounting portion of one mounting seat 111, the cantilever arm 113 and the first mounting portion of the other mounting seat 111. The second mounting portion is bent into a C shape and wrapped outside the middle section; the second mounting portion is fixedly connected to the middle section 122 by means of a bolt passing through the second bending portion and the middle section 122, and a pin passing through the second bending portion and the middle section 122.

[0072] The bridge frame 100 provided in this embodiment is provided with a first reinforcement member 204 and a second reinforcement member 202, which can adapt to the purlin 205 with weaker rigidity, thereby solving the negative impact on the operating stability of the photovoltaic cleaning robot caused by the insufficient strength of the purlin 205 in the prior art.

[0073] The embodiment of the utility model further provides a photovoltaic array, including a photovoltaic module row, the photovoltaic module row includes a plurality of photovoltaic strings arranged one by one, and adjacent photovoltaic strings are connected by a bridge frame 100, and the bridge frame 100 is the bridge frame 100 provided in the above embodiment. The photovoltaic string includes a plurality of photovoltaic modules 201.

[0074] The photovoltaic array provided in this embodiment uses the bridge frame 100 provided in the above embodiment, which is convenient to use. Of course, the photovoltaic array provided in this embodiment also has other effects related to the bridge frame 100 provided in the above embodiment, which will not be repeated here.

[0075] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge, characterized in that: include: Side frames, two of which are used to be fixed on two adjacent photovoltaic strings respectively; An intermediate bridge, wherein the intermediate bridge is mounted on the side frame; the intermediate bridge comprises a cantilever and a support arm; one end of the cantilever is rotatably mounted on the side frame; the support arm is fixedly connected to the side frame and the cantilever respectively; the fixed position of the support arm on the cantilever is adjustable, and / or the position in the support arm for fixed connection with the cantilever is adjustable.

2. The bridge according to claim 1, characterized in that: The middle bridge also includes a mounting seat fixed to the side frame; one end of the cantilever is rotatably mounted on the mounting seat; the first end of the support arm is fixed to the mounting seat; the second end of the support arm is fixedly connected to the cantilever through a fixing member, and the support arm is located below the cantilever; the support arm, the mounting seat and the cantilever are sequentially connected to form a triangular frame structure.

3. The bridge according to claim 2, characterized in that: The cantilever is provided with an elongated hole matched with the fixing member, and the elongated hole is arranged along the direction from the end of the cantilever connected with the mounting seat to the free end of the cantilever.

4. The bridge according to any one of claims 1 to 3, characterized in that: There are two intermediate bridges, which are respectively installed on the two side frames; the free ends of the cantilevers in the two intermediate bridges are close to each other.

5. The bridge according to claim 1, characterized in that: The side frame and the photovoltaic components of the photovoltaic string are fixedly connected via purlins.

6. The bridge according to claim 5, characterized in that: The cross section of the purlin is U-shaped, and a first flange and a second flange are respectively provided at both ends of the opening thereof, the first flange is fixedly connected to the side frame, and the second flange is fixedly connected to the frame of the photovoltaic module.

7. The bridge according to claim 6, characterized in that: A first reinforcement member is provided at the connection between the purlin, the side frame and the frame of the photovoltaic module.

8. The bridge according to claim 7, characterized in that: The first reinforcement member includes a first bent plate and a second bent plate connected to each other; the first bent plate is located between the second flange and the frame of the photovoltaic module; the first bent plate is also located between the first flange and the side frame; the second bent plate is attached to the end of the purlin.

9. The bridge according to claim 5, characterized in that: The side frame and the photovoltaic module are also fixedly connected via a connecting seat; the connecting seat is in the shape of an elongated strip, and its two ends along the length direction are respectively fixedly connected to the frame of the photovoltaic module and the side frame; a second reinforcement member is provided at the connection between the connecting seat and the frame of the photovoltaic module.

10. The bridge according to any one of claims 5 to 9, characterized in that: The side frame includes a middle section, an upper section hinged to the middle section, and a lower section hinged to the middle section; the middle section is fixedly connected to the photovoltaic assembly through the purlin; the two ends of the upper bridge in the bridge frame are respectively connected to the upper sections of the two side frames; the two ends of the lower bridge in the bridge frame are respectively connected to the lower sections of the two side frames.

11. A photovoltaic array, characterized in that: It comprises a photovoltaic component row, wherein the photovoltaic component row comprises a plurality of photovoltaic strings arranged one by one, and adjacent photovoltaic strings are connected by a bridge frame, and the bridge frame is the bridge frame described in any one of claims 1-10.

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