Connection bridge and photovoltaic system

Abstract

The application discloses a connecting bridge and a photovoltaic system, and belongs to the technical field of photovoltaic technology. The connecting bridge comprises a first bridge beam and a second bridge beam, a first bridge and a second bridge. The two ends of the first bridge are connected with the first bridge beam and the second bridge beam through corresponding adapters, so that the included angles between the first bridge and the first bridge beam and between the first bridge and the second bridge beam are adjustable. The two ends of the second bridge are connected with the first bridge beam and the second bridge beam through corresponding adapters, so that the included angles between the second bridge and the first bridge beam and between the second bridge and the second bridge beam are adjustable. The first bridge and the second bridge each comprise at least three sub-bridges which are sequentially sleeved and movably connected with each other. The two ends of the first bridge and the two ends of the second bridge are located on the innermost and outermost sub-bridges respectively. The connecting bridge can adapt to a large rotating angle and a large span between adjacent photovoltaic rows, and creates a passable channel for the movement of a photovoltaic cleaning robot between the adjacent photovoltaic rows.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic technology, and in particular relates to a connecting cable tray and a photovoltaic system. Background Technology

[0002] To increase the total power generation of photovoltaic (PV) systems, PV arrays typically employ tracking brackets that adjust the module angles in real time to track the sun's movement. Simultaneously, for efficient automated operation and maintenance, PV cleaning robots need to move between adjacent PV arrays using connecting bridges. In related technologies, adjacent PV arrays are often connected using rigid, fixed connecting bridges. However, due to the independent rotation mechanism of the tracking brackets, adjacent PV arrays may rotate asynchronously during operation due to response delays, differences in control commands, or mechanical errors, resulting in relative angles and displacements between them. In such cases, the rigid, fixed bridges, lacking effective adjustment capabilities, may generate significant mechanical stress within the structure, potentially leading to fatigue damage at connection points or deformation of the PV brackets over time. This could also cause the PV cleaning robot to interrupt its cleaning path, hindering the efficiency and reliability of automated operation and maintenance of the PV system. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the related art. To this end, this application proposes a connecting cable tray and a photovoltaic system that can accommodate different rotation angles between adjacent photovoltaic rows, creating a relatively continuous passageway for photovoltaic cleaning robots to move between adjacent photovoltaic rows.

[0004] In a first aspect, this application provides a connecting cable tray for use in a photovoltaic system, comprising: First bridge girder and second bridge girder; The first bridge and the second bridge are connected at both ends to the first end of the first bridge girder and the first end of the second bridge girder respectively via corresponding adapters, so that the included angle between the first bridge and the first bridge girder and between the first bridge and the second bridge girder is adjustable. The two ends of the second bridge are connected at both ends to the second end of the first bridge girder and the second bridge girder respectively via corresponding adapters, so that the included angle between the second bridge and the first bridge girder and between the second bridge and the second bridge girder is adjustable. Each of the first bridge and the second bridge includes at least three sub-bridges sequentially nested from the outside to the inside. Adjacent sub-bridges are movable and fitted along the length direction, and the two ends of the first bridge and the two ends of the second bridge are located on the innermost and outermost sub-bridges respectively.

[0005] According to the connecting bridge of this application, by adopting a first bridge and a second bridge with movable cooperation between adapters and at least three-stage sub-bridges, and in combination with a fixed first bridge beam and a second bridge beam, a wide range of rotation angles and large spans between adjacent photovoltaic rows can be accommodated. This creates a relatively continuous passage for the photovoltaic cleaning robot to move between adjacent photovoltaic rows, helps the cleaning robot to complete cleaning work efficiently and autonomously, reduces stress damage caused by rigid fixed connections, and thus improves the structural stability, power generation efficiency and operation and maintenance automation level of the photovoltaic system.

[0006] According to one embodiment of this application, the connecting bridge includes a first extreme posture and a second extreme posture. The length of the interlocking subbridges adjacent to each other in the first extreme posture is the minimum, and the length of the interlocking subbridges adjacent to each other in the second extreme posture is the maximum. Furthermore, a pair of mutually cooperating limiting structures is provided between adjacent subbridges, and the pair of limiting structures is used for limiting cooperation in the second extreme posture.

[0007] According to one embodiment of this application, the limiting structure pair includes: The first protrusion is located on the inner wall of the outermost of the adjacent subbridges and protrudes inward. The second protrusion is located on the outer wall of one of the adjacent subbridges, on the inner side, and protrudes outward.

[0008] According to one embodiment of this application, the limiting structure is located at the end of the adjacent sub-bridge.

[0009] According to one embodiment of this application, all the subbridges are circular tubes.

[0010] According to one embodiment of this application, the adapter includes: The first hinge member is hinged to the first bridge beam or the second bridge beam around the first axis; The second hinge member is hinged to the first hinge member about a second axis, and hinged to the first bridge or the second bridge about a third axis; wherein... The second axis intersects the first axis, the second axis intersects the third axis, and the length of the first hinge is less than the length of the second hinge.

[0011] According to one embodiment of this application, both the first bridge and the second bridge include a first sub-bridge, a second sub-bridge, and a third sub-bridge sequentially arranged from the outside to the inside. The lower side of the first sub-bridge is open, the second sub-bridge has a square cross-section, and the third sub-bridge has a circular cross-section.

[0012] According to one embodiment of this application, the first subbridge has a plurality of rotating parts spaced apart along the length direction, and the second subbridge is supported on the plurality of rotating parts.

[0013] According to one embodiment of this application, the lower sidewall of the second subbridge is provided with a folding portion. When the limiting structure includes a first protrusion and a second protrusion, the rotating portion forms a first protrusion between the first subbridge and the second subbridge, and the folding portion forms a second protrusion between the first subbridge and the second subbridge.

[0014] Secondly, this application provides a photovoltaic system, comprising: Multiple photovoltaic arrays; As described in any of the above-described connecting cable trays, the first cable tray beam and the second cable tray beam are respectively connected to the adjacent photovoltaic array.

[0015] According to the photovoltaic system of this application, by adopting the above-mentioned connecting bridge, it can adapt to a large range of rotation angles and large spans between adjacent photovoltaic rows, creating a relatively continuous passage for the photovoltaic cleaning robot to move between adjacent photovoltaic rows, helping the cleaning robot to complete cleaning work efficiently and autonomously, reducing stress damage caused by rigid fixed connections, thereby improving the structural stability, power generation efficiency and operation and maintenance automation level of the photovoltaic system.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the photovoltaic system provided in the embodiments of this application; Figure 2 This is one of the partial structural schematic diagrams of the connecting cable tray provided in the embodiments of this application; Figure 3 This is a partial structural schematic diagram of the first subbridge and the second subbridge provided in the embodiments of this application; Figure 4 This is a second partial structural schematic diagram of the connecting cable tray provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the first sub-bridge and the second sub-bridge provided in the embodiments of this application; Figure 6 This is a partial structural diagram of the second and third sub-bridges provided in the embodiments of this application.

[0018] Figure label: Connecting cable tray 10, first cable tray beam 100, second cable tray beam 200, first bridge 300, second bridge 400; First sub-bridge 410, rotating part 411, second sub-bridge 420, folding part 421, third sub-bridge 430, connecting part 431; The limiting structure is 440, with a first protrusion 441 and a second protrusion 442; Adapter 450, first hinge 451, second hinge 452; Photovoltaics ranked 20th. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] The following is for reference. Figures 1-6 This application describes a photovoltaic system and a connecting bridge 10 according to embodiments thereof.

[0021] like Figure 1 As shown, the photovoltaic system includes: Multiple photovoltaic systems ranked 20th; The connecting cable tray 10, the first cable tray beam 100 and the second cable tray beam 200 are respectively connected to the adjacent photovoltaic row 20.

[0022] In this embodiment, the photovoltaic system may include multiple spaced-apart photovoltaic arrays 20 and connecting cable trays 10 connected to the photovoltaic arrays 20. Each photovoltaic array 20 may include a photovoltaic support frame and multiple photovoltaic modules. The photovoltaic modules are assembled and installed on the photovoltaic support frame, which may be a single-axis tracking support frame. Different photovoltaic arrays 20 may have different rotation angles. The connecting cable tray 10 is connected to two adjacent photovoltaic arrays 20 via a first cable tray beam 100 and a second cable tray beam 200, respectively.

[0023] This application also provides a connecting cable tray 10.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, the connecting cable tray 10 is used in a photovoltaic system and includes: First bridge girder 100 and second bridge girder 200; The first bridge 300 and the second bridge 400 are connected at both ends to the first ends of the first bridge girder 100 and the second bridge girder 200 respectively via corresponding adapters 450, so that the included angles between the first bridge 300 and the first bridge girder 100 and between the first bridge 300 and the second bridge girder 200 are adjustable. The two ends of the second bridge 400 are connected at both ends to the second ends of the first bridge girder 100 and the second bridge girder 200 respectively via corresponding adapters 450, so that the included angles between the second bridge 400 and the first bridge girder 100 and between the second bridge 400 and the second bridge girder 200 are adjustable. Each of the first bridge 300 and the second bridge 400 includes at least three sub-bridges sequentially nested from the outside to the inside. Adjacent sub-bridges are movable and coordinated along the length direction, and the two ends of the first bridge 300 and the two ends of the second bridge 400 are located on the innermost and outermost sub-bridges respectively.

[0025] In this embodiment, the photovoltaic system includes a first bridge beam 100, a second bridge beam 200, a first bridge 300, and a second bridge 400. The first bridge beam 100 and the second bridge beam 200 are connected to the purlins or main shaft of the photovoltaic system. The connecting bridge 10 is generally U-shaped, with the first bridge beam 100 and the second bridge beam 200 arranged opposite each other, and the first bridge 300 and the second bridge 400 arranged opposite each other. The first end of the first bridge 300 is connected to the first end of the first bridge girder 100 via a connector 450, and the angle between the first bridge 300 and the first bridge girder 100 can be changed; the second end of the first bridge 300 is connected to the first end of the second bridge girder 200 via a connector 450, and the angle between the first bridge 300 and the second bridge girder 200 can be changed; the first end of the second bridge 400 is connected to the second end of the first bridge girder 100 via a connector 450, and the angle between the second bridge 400 and the first bridge girder 100 can be changed; the second end of the second bridge 400 and the second end of the second bridge girder 200 are connected via a connector 450, and the angle between the second bridge 400 and the second bridge girder 200 can be changed.

[0026] It should be noted that adapter 450 includes, but is not limited to, universal joints.

[0027] In related technologies, both the first and second bridge beams are equipped with bases and swing arms. The swing arms are pivotally mounted on the bases to accommodate the pivot angle between adjacent photovoltaic arrays. However, when the span between adjacent photovoltaic arrays is large, or the pivot angle between them is large, jamming can easily occur at the interface between the base and the swing arm during the pivoting process, potentially causing structural damage to the bridge beams.

[0028] In this embodiment, both the first bridge 300 and the second bridge 400 include at least three sub-bridges sequentially nested from the outside in, such as a first sub-bridge 410, a second sub-bridge 420, and a third sub-bridge 430 from the outside in. Adjacent sub-bridges can move relative to each other along their length, similar to the telescopic arm of a telescope or the structure of some telescopic antennas. The two ends of the first bridge 300 and the two ends of the second bridge 400 are located on the corresponding first sub-bridge 410 and third sub-bridge 430, respectively. The first end of the outermost sub-bridge is connected to the corresponding first bridge beam 100 or second bridge beam 200 via a corresponding adapter 450, and the second end of the innermost sub-bridge is connected to the corresponding first bridge beam 100 or second bridge beam 200 via a corresponding adapter 450.

[0029] When adjacent photovoltaic arrays 20 begin to deflect relative to each other, the distance between the first end of the first bridge beam 100 and the first end of the second bridge beam 200, as well as the distance between the second end of the first bridge beam 100 and the second end of the second bridge beam 200, changes. This causes multiple sub-bridges of the first bridge 300 and the second bridge 400 to move and coordinate, and the adapter 450 rotates to adapt to the angular changes between adjacent photovoltaic arrays 20. At least three sub-bridges, sequentially nested from the outside in, have a large span and travel, capable of matching a large range of pivot angles and spans between adjacent photovoltaic arrays 20. Therefore, fixed first bridge beams 100 and second bridge beams 200 can be used, eliminating the need for pivotable bridge beams.

[0030] In this way, when the photovoltaic support rotates asynchronously or the terrain is uneven, causing the relative angle of adjacent photovoltaic rows 20, the first bridge 300 and the second bridge 400 can create a more continuous passage for the photovoltaic cleaning robot. At the same time, it can improve the stability and reliability of the overall structure of the photovoltaic system, reduce stress damage caused by rigid fixed connections, and help the cleaning robot complete the cleaning work efficiently and autonomously, thereby improving the power generation efficiency and operation and maintenance automation level of the photovoltaic system.

[0031] According to the connecting bridge 10 provided in the embodiments of this application, by adopting the adapter 450 and the first bridge 300 and the second bridge 400 that move and cooperate between at least three sub-bridges, and in combination with the fixed first bridge beam 100 and the second bridge beam 200, it can adapt to a large range of rotation angles and large spans between adjacent photovoltaic rows 20, creating a relatively continuous passage for the photovoltaic cleaning robot to move between adjacent photovoltaic rows 20, helping the cleaning robot to complete the cleaning work efficiently and autonomously, reducing stress damage caused by rigid fixed connections, thereby improving the structural stability, power generation efficiency and operation and maintenance automation level of the photovoltaic system.

[0032] Correspondingly, the photovoltaic system provided in the embodiments of this application, by adopting the above-mentioned connecting bridge 10, can adapt to a large range of rotation angles and large spans between adjacent photovoltaic rows 20, creating a relatively continuous passage for the photovoltaic cleaning robot to move between adjacent photovoltaic rows 20, helping the cleaning robot to complete cleaning work efficiently and autonomously, reducing stress damage caused by rigid fixed connections, thereby improving the structural stability, power generation efficiency and operation and maintenance automation level of the photovoltaic system.

[0033] In some embodiments, such as Figure 3 and Figure 6 As shown, the connecting bridge 10 includes a first extreme posture and a second extreme posture. The length between adjacent sub-bridges in the first extreme posture is the minimum, and the length between adjacent sub-bridges in the second extreme posture is the maximum. Furthermore, there are mutually cooperating limiting structures 440 between adjacent sub-bridges. The limiting structures 440 are used for limiting and cooperating in the second extreme posture.

[0034] In this embodiment, the first end of the first sub-bridge 410 is connected to the corresponding first bridge beam 100 or second bridge beam 200 via a corresponding adapter 450, and the second end of the third sub-bridge 430 is connected to the corresponding first bridge beam 100 or second bridge beam 200 via a connector 431 and a corresponding adapter 450. A limiting structure pair 440 is provided between the second end of the first sub-bridge 410 and the first end of the second sub-bridge 420, and between the second end of the second sub-bridge 420 and the first end of the third sub-bridge 430.

[0035] The outer diameter of the connector 431 can be approximately equal to the outer diameter of the first end of the first sub-bridge 410. This connection between the second end of the third sub-bridge 430 and the corresponding adapter 450 increases the coaxiality of the first sub-bridge 410, second sub-bridge 420, and third sub-bridge 430, ensuring that their axes are substantially coincident. Simultaneously, the connection between the connector 431 and the corresponding adapter 450 facilitates the pivoting of the third sub-bridge 430 relative to the first bridge beam 100 or the second bridge beam 200.

[0036] The first limit posture is the shortest boundary of the extension and retraction of the connecting cable tray 10. During installation or transportation, it can be retracted to this state to save space. The connecting cable tray 10 can be in a position near this when the rotation angles of the two photovoltaic arrays 20 are relatively close.

[0037] The second extreme posture is the longest boundary of the extension and retraction of the connecting bridge 10. In this posture, the limiting structures 440 contact and lock each other, thereby preventing the inner sub-bridge from moving further out of the outer sub-bridge.

[0038] The limiting structure 440 can serve as a mechanical locking structure, ensuring that even at the longest boundary of the extension of the connecting cable tray 10, there is still sufficient overlap length between adjacent sub-bridges to transfer the load, and reducing the risk of structural failure due to complete pull-out.

[0039] In some embodiments, such as Figure 3 and Figure 6 As shown, the limiting structure for 440 includes: The first protrusion 441 is located on the inner wall of the outermost subbridge in an adjacent subbridge and protrudes inward. The second protrusion 442 is located on the outer wall of one of the adjacent subbridges on the inner side and protrudes outward.

[0040] In this embodiment, the limiting structure pair 440 includes: a first protrusion 441 provided at the second end of the first subbridge 410, and a second protrusion 442 provided at the first end of the second subbridge 420; and / or, the limiting structure pair 440 includes: a first protrusion 441 provided at the second end of the second subbridge 420, and a second protrusion 442 provided at the first end of the third subbridge 430.

[0041] When two adjacent subbridges are stretched to their maximum design length, the first protrusion 441, located on the inner wall of the outer subbridge and protruding inward, will contact the second protrusion 442, located on the outer wall of the inner subbridge and protruding outward. The first protrusion 441 and the second protrusion 442 abut against each other, preventing the inner subbridge from being pulled further out of the outer subbridge. This design ensures that, even in the second extreme posture, a certain overlap length is maintained between adjacent subbridges to maintain structural stability and load transfer capacity.

[0042] In some embodiments, such as Figure 3 As shown, the limiting structure 440 is located at the end of the adjacent sub-bridge.

[0043] In this embodiment, when the first protrusion 441 and the second protrusion 442 are interlocked, the inner subbridge still retains a certain overlapping length inside the outer subbridge. If the limiting structure 440 is positioned far from the end, the overlapping portion of the subbridge in the second extreme posture will be too long, and the effective travel range of the first bridge 300 and the second bridge 400 will be too short. The embodiment of this application can effectively utilize most of the length of the subbridge as the telescopic travel.

[0044] In some embodiments, such as Figure 2 As shown, all subbridges are cylindrical.

[0045] In this embodiment, the circular tube structure has relatively uniform bending stiffness in all directions, which can effectively resist forces and torques from different directions, providing a relatively stable passage platform for the photovoltaic cleaning robot. At the same time, the circular tube shape without sharp edges can also improve the safety of the installation and maintenance process.

[0046] In some embodiments, such as Figure 2 As shown, the connector includes: The first hinge member 451 is hinged to the first bridge beam 100 or the second bridge beam 200 around the first axis. The second hinge member 452 is hinged to the first hinge member 451 about a second axis, and hinged to the first bridge 300 or the second bridge 400 about a third axis; wherein... The second axis intersects with the first axis and the second axis intersects with the third axis. The length of the first hinge 451 is less than the length of the second hinge 452.

[0047] In this embodiment, the first hinge 451 and the second hinge 452 include, but are not limited to, universal joints. The first hinge 451, by rotating about a first axis, can provide a certain tilting capability for the first bridge 300 and the second bridge 400 about the first axis. Furthermore, the longer second hinge rotates about a second axis, enabling the first bridge 300 or the second bridge 400, hinged to it about a third axis, to achieve a greater range of pitch and yaw in three-dimensional space.

[0048] The design of the second hinge 452 being longer than the first hinge 451 effectively amplifies the adjustment stroke and flexibility at its end by utilizing the longer lever arm of the second hinge 452, and gives the first bridge 300 and the second bridge 400 the ability to flexibly adapt to angle changes in multiple directions.

[0049] In some embodiments, such as Figure 4 As shown, both the first bridge 300 and the second bridge 400 include a first sub-bridge 410, a second sub-bridge 420 and a third sub-bridge 430 arranged sequentially from the outside to the inside. The lower side of the first sub-bridge 410 is open, the second sub-bridge 420 has a square cross-section and the third sub-bridge 430 has a circular cross-section.

[0050] In this embodiment, the first subbridge 410 is the outermost support, and its open design on the lower side, such as in the shape of a "C" or "U" shaped groove, can reduce its own weight; at the same time, the open bottom can provide a window for the installation and telescopic movement of the internal subbridges.

[0051] The second sub-bridge 420 adopts a square cross-section. The square tube has good bending and torsional stiffness, which can effectively bear the load generated by the passing of the cleaning robot and wind load, and reduce the significant rotation or swaying of the connecting bridge.

[0052] The third sub-bridge 430 has a circular cross-section, which reduces frictional resistance and makes expansion and contraction smoother when it mates with the second sub-bridge 420. At the same time, the circular tube shape, without sharp edges, also improves safety during installation and maintenance.

[0053] In some embodiments, such as Figure 5 As shown, the first subbridge 410 is provided with a plurality of rotating parts 411 spaced apart along the length direction, and the second subbridge 420 is supported on the plurality of rotating parts 411.

[0054] In this embodiment, the first subbridge 410 is provided with a plurality of rotating parts 411, which are spaced apart along the length direction. These rotating parts 411 together form a set of support points, on which the second subbridge 420 is erected and supported.

[0055] The rotating part 411 is a hinged or rotatable connecting component, such as a slide rail liner. The rotating part 411 converts the sliding friction between the first sub-bridge 410 and the second sub-bridge 420 into rolling friction. When the second sub-bridge 420 needs to extend or retract relative to the first sub-bridge 410, the resistance from rolling friction is much lower than that from sliding friction, making the adjustment process more effortless and smoother. Simultaneously, the rotating part 411 reduces wear on the first sub-bridge 410 and the second sub-bridge 420, extending the service life of the connecting bridge 10 and reducing malfunctions caused by jamming or wear.

[0056] In some embodiments, such as Figure 5 As shown, the lower side wall of the second subbridge 420 is provided with a folding portion 421. When the limiting structure pair 440 includes a first protrusion 441 and a second protrusion 442, the rotating portion 411 forms the first protrusion 441 between the first subbridge 410 and the second subbridge 420, and the folding portion 421 forms the second protrusion 442 between the first subbridge 410 and the second subbridge 420.

[0057] In this embodiment, on the lower side wall of the second subbridge 420, a portion of the material is folded outward through processes such as stamping and bending to form an outwardly protruding folded portion 421. The folded portion 421 may not be a separate welded or installed part; it is itself part of the second subbridge 420, and naturally constitutes a second protrusion 442 that mates with the first subbridge 410.

[0058] The rotating part 411 has a certain thickness and structure, and is located on the path of the second sub-bridge 420, thereby playing the role of blocking the first protrusion 441.

[0059] This design eliminates the need for additional machining and installation of the independent first protrusion 441 and second protrusion 442, simplifying the manufacturing process and reducing the number of parts and material costs. Since the folding portion 421 is part of the base material of the second sub-bridge 420, the second protrusion 442 is not connected by welding or bolts, reducing the risk of detachment, loosening, or corrosion of the second protrusion 442 and improving the structural reliability of the connecting bridge 10. The rotating portion 411 simultaneously serves to limit movement and reduce friction, making the structure of the first bridge 300 and the second bridge 400 more compact and efficient.

[0060] The following is combined Figures 1-6 The connecting cable tray 10 of the present application is described.

[0061] The connecting cable tray 10 is used in a photovoltaic system and includes a first cable tray beam 100, a second cable tray beam 200, a first bridge 300, and a second bridge 400.

[0062] Both ends of the first bridge 300 are connected to the first ends of the first bridge girder 100 and the second bridge girder 200 respectively via corresponding adapters 450, so that the included angle between the first bridge 300 and the first bridge girder 100 and between the first bridge 300 and the second bridge girder 200 is adjustable. Both ends of the second bridge 400 are connected to the second ends of the first bridge girder 100 and the second bridge girder 200 respectively via corresponding adapters 450, so that the included angle between the second bridge 400 and the first bridge girder 100 and between the second bridge 400 and the second bridge girder 200 is adjustable. Each of the first bridge 300 and the second bridge 400 includes at least three sub-bridges sequentially nested from the outside to the inside. Adjacent sub-bridges are movable and coordinated along the length direction, and the two ends of the first bridge 300 and the two ends of the second bridge 400 are located on the innermost and outermost sub-bridges respectively.

[0063] like Figure 2 and Figure 4 As shown, both the first bridge 300 and the second bridge 400 include a first sub-bridge 410, a second sub-bridge 420 and a third sub-bridge 430 arranged sequentially from the outside to the inside.

[0064] The connecting bridge 10 includes a first extreme posture and a second extreme posture. The length between adjacent sub-bridges in the first extreme posture is the minimum, and the length between adjacent sub-bridges in the second extreme posture is the maximum. Adjacent sub-bridges are provided with mutually cooperating limiting structures 440, which are used for limiting cooperation in the second extreme posture.

[0065] like Figure 3 and Figure 6As shown, the limiting structure 440 includes a first protrusion 441 and a second protrusion 442. The first protrusion 441 is located on the inner wall of the outermost subbridge of the adjacent subbridges and protrudes inward; the second protrusion 442 is located on the outer wall of the innermost subbridge of the adjacent subbridges and protrudes outward.

[0066] like Figure 2 As shown, the adapter 450 includes a first hinge 451 and a second hinge 452. The first hinge 451 is hinged to the first bridge beam 100 or the second bridge beam 200 about a first axis; the second hinge 452 is hinged to the first hinge 451 about a second axis and to the first bridge 300 or the second bridge 400 about a third axis; wherein the second axis intersects the first axis and the third axis, and the length of the first hinge 451 is less than the length of the second hinge 452.

[0067] The subbridge can be one of the following shapes: Firstly, such as Figure 2 As shown, all subbridges are cylindrical.

[0068] like Figure 3 As shown, the limiting structure 440 is located at the end of the adjacent sub-bridge.

[0069] Secondly, such as Figure 4 As shown, the lower side of the first subbridge 410 is open, the second subbridge 420 has a square cross-section, and the third subbridge 430 has a circular cross-section.

[0070] like Figure 5 As shown, the first subbridge 410 is provided with a plurality of rotating portions 411 spaced apart along the length direction, and the second subbridge 420 is supported on the plurality of rotating portions 411. The lower side wall of the second subbridge 420 is provided with a folding portion 421. When the limiting structure pair 440 includes a first protrusion 441 and a second protrusion 442, the rotating portion 411 forms the first protrusion 441 between the first subbridge 410 and the second subbridge 420, and the folding portion 421 forms the second protrusion 442 between the first subbridge 410 and the second subbridge 420.

[0071] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0072] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0073] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0074] In the description of this application, "multiple" means two or more.

[0075] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0076] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A connecting cable tray for use in photovoltaic systems, characterized in that, include: First bridge girder (100) and second bridge girder (200); The first bridge (300) and the second bridge (400) are connected at both ends to the first end of the first bridge girder (100) and the first end of the second bridge girder (200) respectively via corresponding adapters (450), so that the included angle between the first bridge (300) and the first bridge girder (100) and between the first bridge (300) and the second bridge girder (200) is adjustable. The two ends of the second bridge (400) are connected to the second end of the first bridge girder (100) and the second bridge girder (200) respectively. The second end is connected by a corresponding adapter (450) so that the included angle between the second bridge (400) and the first bridge beam (100) and between the second bridge (400) and the second bridge beam (200) is adjustable; wherein, the first bridge (300) and the second bridge (400) each include at least three sub-bridges sequentially arranged from the outside to the inside, the adjacent sub-bridges are movable and fitted along the length direction, and the two ends of the first bridge (300) and the two ends of the second bridge (400) are located on the innermost and outermost sub-bridges, respectively.

2. The connecting cable tray according to claim 1, characterized in that, The connecting bridge includes a first extreme posture and a second extreme posture. The length between the sub-bridges adjacent to each other in the first extreme posture is the minimum, and the length between the sub-bridges adjacent to each other in the second extreme posture is the maximum. The adjacent sub-bridges are provided with mutually cooperating limiting structure pairs (440), which are used for limiting cooperation in the second extreme posture.

3. The connecting cable tray according to claim 2, characterized in that, The limiting structure pair (440) includes: The first protrusion (441) is provided on the inner wall of the outermost of the adjacent subbridges and protrudes inward; The second protrusion (442) is provided on the outer wall of one of the adjacent subbridges on the opposite inner side and protrudes outward.

4. The connecting cable tray according to claim 2, characterized in that, The limiting structure pair (440) is located at the end of the adjacent sub-bridge.

5. The connecting cable tray according to any one of claims 1-4, characterized in that, All the subbridges are cylindrical.

6. The connecting cable tray according to claim 5, characterized in that, The adapter (450) includes: The first hinge (451) is hinged to the first bridge beam (100) or the second bridge beam (200) about a first axis; The second hinge (452) is hinged to the first hinge (451) about a second axis, and hinged to the first bridge (300) or the second bridge (400) about a third axis; wherein, The second axis intersects the first axis, and the second axis intersects the third axis. The length of the first hinge (451) is less than the length of the second hinge (452).

7. The connecting cable tray according to any one of claims 1-4, characterized in that, Both the first bridge (300) and the second bridge (400) include a first sub-bridge (410), a second sub-bridge (420) and a third sub-bridge (430) arranged sequentially from the outside to the inside. The lower side of the first sub-bridge (410) is open, the second sub-bridge (420) has a square cross-section, and the third sub-bridge (430) has a circular cross-section.

8. The connecting cable tray according to claim 7, characterized in that, The first subbridge (410) is provided with a plurality of rotating parts (411) spaced apart along the length direction, and the second subbridge (420) is supported on the plurality of rotating parts (411).

9. The connecting cable tray according to claim 8, characterized in that, The lower side wall of the second subbridge (420) is provided with a folding portion (421). When the limiting structure pair (440) includes a first protrusion (441) and a second protrusion (442), the rotating portion (411) forms the first protrusion (441) between the first subbridge (410) and the second subbridge (420), and the folding portion (421) forms the second protrusion (442) between the first subbridge (410) and the second subbridge (420).

10. A photovoltaic system, characterized in that, include: Multiple photovoltaic arrays (20); The connecting cable tray as described in any one of claims 1-9, wherein the first cable tray beam (100) and the second cable tray beam (200) are respectively connected to the adjacent photovoltaic array (20).

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