Bridge device, bridge assembly and photovoltaic power station

Abstract

The utility model discloses a bridge device, a bridge assembly and a photovoltaic power station, and the bridge device comprises an outer sleeve bridge of which the first end is used for being hinged to a first target installation body and the second end is provided with a telescopic hole; the first end of the inner sleeve bridge frame is used for being inserted into the telescopic hole and is in sliding fit with the telescopic hole, the second end of the inner sleeve bridge frame is used for being hinged to a second target installation body, and at least one of the first target installation body and the second target installation body is a photovoltaic module group; the elastic reset piece is connected with the outer sleeve bridge frame and the inner sleeve bridge frame, and the elastic reset piece is at least arranged on the outer side of a partial structure of the inner sleeve bridge frame in a sleeving mode. When the first target installation body and the second target installation body have large angle deviation, the length can be automatically adjusted, and the situation that the connecting position of the bridge device is snapped is avoided. Even if the inner sleeve bridge frame is completely separated from the outer sleeve bridge frame, the corresponding relation between the inner sleeve bridge frame and the outer sleeve bridge frame can be ensured under the action of the elastic reset piece, so that the inner sleeve bridge frame can be inserted into the telescopic hole of the outer sleeve bridge frame.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power plant technology, and more specifically, to a cable tray device, cable tray assembly, and photovoltaic power plant. Background Technology

[0002] A photovoltaic (PV) tracking system is a device that allows PV modules to adjust their angle according to the sun's position to maximize the absorption of solar radiation, playing a crucial role in improving PV power generation efficiency. Common PV tracking systems include single-axis tracking systems and dual-axis tracking systems. Among these, the flat single-axis tracking system is the most widely used.

[0003] To improve the cleaning efficiency of photovoltaic (PV) cleaning robots, multiple PV module groups using different tracking systems are typically arranged in the same column, allowing the robot a longer cleaning path. Within the same column, there is a certain distance between adjacent PV module groups (i.e., adjacent groups using different tracking systems). To ensure the cleaning robot can pass through all the PV module groups in the same column, bridges need to be installed between adjacent PV module groups, allowing the robot to traverse different PV module groups for continuous cleaning.

[0004] The existing cable tray system is a rigid cable tray, with both ends connected to the photovoltaic module groups on both sides via universal joints. When there is a small angular deviation between two adjacent photovoltaic module groups, the cable tray system should be able to connect the two photovoltaic module groups to ensure that the photovoltaic cleaning robot can pass normally; when there is a large angular deviation between adjacent photovoltaic module groups, the connection of the cable tray system will be broken by the photovoltaic module group.

[0005] Therefore, how to prevent the connection points of the cable tray device from being broken by the photovoltaic module group is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this application is to provide a cable tray device to prevent the connection of the cable tray device from being pulled apart;

[0007] Another objective of this application is to provide a cable tray assembly and a photovoltaic power station having the above-mentioned cable tray device.

[0008] To achieve the above objectives, this application provides the following technical solution:

[0009] The first aspect of this application provides a cable tray device, comprising:

[0010] An outer cable tray, wherein a first end of the outer cable tray is hinged to a first target mounting body, and a second end of the outer cable tray has a telescopic hole;

[0011] An inner cable tray, the first end of which is inserted into the telescopic hole and slidably engaged with the telescopic hole, and the second end of which is hinged to a second target mounting body, wherein at least one of the first target mounting body and the second target mounting body is a photovoltaic module group;

[0012] An elastic reset member is connected to both the outer cable tray and the inner cable tray, and the elastic reset member is at least sleeved on the outer side of a portion of the structure of the inner cable tray.

[0013] In one possible implementation, the inner cable tray includes an inner cable tray body and a cable tray guide head, the cable tray guide head being located at one end of the inner cable tray body near the outer cable tray;

[0014] The cross-sectional area of ​​the cable tray guide head gradually decreases from one end closer to the inner cable tray body to the other end farther away from the inner cable tray body.

[0015] In one possible implementation, the cable tray guide head is a conical structure, a pyramidal structure, a frustum of a cone structure, or a frustum of a pyramidal structure.

[0016] In one possible implementation, the inner cable tray body and the cable tray guide head are an integral structure; or, the cable tray guide head is detachably connected to the inner cable tray body.

[0017] In one possible implementation, one end of the elastic reset member is connected to the outer wall, inner wall, end face of the outer cable tray, or the first universal joint at the first end of the outer cable tray;

[0018] The other end of the elastic reset member is connected to the outer wall of the inner cable tray or to the second universal joint at the second end of the inner cable tray.

[0019] The cable tray device provided in this application connects the outer and inner cable trays via an elastic reset member. When the cable tray device is subjected to an outward tensile force, the outer and inner cable trays can move away from each other, simultaneously stretching the elastic reset member. During this stretching process, the elastic reset member deforms and stores energy. When the tensile force disappears, the elastic reset member resets, allowing the outer and inner cable trays to return to their original lengths. The elastic reset member is at least fitted onto the outer side of a portion of the inner cable tray structure. This ensures that even when there is a significant angular deviation between the first and second target mounting bodies, and the inner cable tray completely detaches from the outer cable tray, the elastic reset member maintains the correspondence between the inner and outer cable trays, allowing the inner cable tray to insert into the expansion joint of the outer cable tray when the elastic reset member resets. This application can automatically adjust its length according to changes in the angular deviation between the first and second target mounting bodies, preventing the connection of the cable tray device from being pulled apart.

[0020] A second aspect of this application provides a cable tray assembly, comprising:

[0021] The cable tray assembly is the cable tray assembly described in any of the preceding items;

[0022] The cable tray main beam is connected to the first target mounting body and the second target mounting body via the cable tray main beam. There are two cable tray main beams, which are respectively fixed to the first target mounting body and the second target mounting body. The cable tray device is connected to both ends of the cable tray main beam. The first end of the outer cable tray is hinged to one of the cable tray main beams via a first universal joint, and the second end of the inner cable tray is hinged to the other cable tray main beam via a second universal joint.

[0023] In one possible implementation, both the first universal joint and the second universal joint include a first rotating part and a second rotating part;

[0024] The first rotating part is hinged to the main beam of the cable tray, the second rotating part of the first universal joint is hinged to the outer cable tray, and the second rotating part of the second universal joint is hinged to the inner cable tray.

[0025] In one possible implementation, the two main beams of the cable tray are respectively fixed to the purlins of the first target mounting body and the second target mounting body.

[0026] In one possible implementation, the area enclosed by the two main bridge beams is a span region, and the bridge devices at both ends of the main bridge beams are arranged symmetrically or centrally symmetrically along the center point of the span region.

[0027] The cable tray assembly provided in this application has all the technical effects of the aforementioned cable tray device, and will not be repeated here.

[0028] A third aspect of this application provides a photovoltaic power station, comprising at least one column of photovoltaic modules, wherein the column of photovoltaic modules includes at least two groups of photovoltaic modules arranged sequentially at intervals, and each group of photovoltaic modules is equipped with an independent tracking system;

[0029] In the same photovoltaic module column, any two adjacent photovoltaic module groups are connected by a bridge frame assembly, and / or, the photovoltaic module groups and the parking position are connected by a bridge frame assembly, wherein the bridge frame assembly is the bridge frame assembly as described in any of the above.

[0030] The photovoltaic power station provided in this application has all the technical effects of the aforementioned bridge frame components, and will not be described in detail here. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a front view of a photovoltaic module assembly with a cable tray assembly as disclosed in an embodiment of this application;

[0033] Figure 2 This is a partial exploded view of a photovoltaic module assembly with a cable tray assembly disclosed in an embodiment of this application;

[0034] Figure 3 This is an exploded view of the cable tray assembly disclosed in the embodiments of this application;

[0035] Figure 4 This is a schematic diagram of the structure of the photovoltaic module groups on both sides when their rotation angles are different, as disclosed in the embodiments of this application;

[0036] Figure 5 This is a schematic diagram of the structure of the photovoltaic module groups on both sides when the rotation angle is large, as disclosed in the embodiments of this application.

[0037] The meanings of the various reference numerals in the figure are as follows:

[0038] 100 - First target installation body;

[0039] 200 - Second target installation body;

[0040] 300-Cable tray assembly; 310-Cable tray main beam; 320-Cable tray device; 321-Outer cable tray; 322-Inner cable tray; 3221-Inner cable tray body; 3222-Cable tray guide head; 323-Elastic reset component; 324-First universal joint; 325-Second universal joint. Detailed Implementation

[0041] This application discloses a cable tray device to prevent the connection of the cable tray device from being pulled apart.

[0042] This application also discloses a cable tray assembly and a photovoltaic power station having the above-mentioned cable tray device.

[0043] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the application as described in the claims. Additionally, the complete composition represented in the embodiments below is not limited to what is necessary as the solution to the application described in the claims. It should be noted that, for ease of description, only the parts relevant to the application are shown in the drawings. Unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0044] like Figures 1-3 As shown, the cable tray device 320 disclosed in this application embodiment is used to be arranged in the span gap between the first target mounting body 100 and the second target mounting body 200, so that the photovoltaic cleaning robot can pass through the span gap between the first target mounting body 100 and the second target mounting body 200, thereby improving the application range of the photovoltaic cleaning robot.

[0045] At least one of the first target mounting body 100 and the second target mounting body 200 is a photovoltaic module group. That is, both the first target mounting body 100 and the second target mounting body 200 can be photovoltaic module groups, or one of the first target mounting body 100 and the second target mounting body 200 can be a photovoltaic module group and the other is a parking position for a photovoltaic cleaning robot.

[0046] The cable tray device 320 disclosed in this embodiment is applicable not only to the case where both photovoltaic module groups rotate simultaneously, but also to the case where one side rotates while the other side remains stationary. In other words, the cable tray device 320 disclosed in this embodiment is also applicable to the stopping position (the stopping position of the photovoltaic cleaning robot). At the stopping position, the stopping side remains stationary while one side of the photovoltaic module group rotates, causing an angular deviation between the two. This also applies to the cable tray device 320 disclosed in this embodiment.

[0047] In this embodiment, multiple photovoltaic modules driven by the same tracking system are referred to as a photovoltaic module group, meaning that the tracking system can drive multiple photovoltaic modules in a photovoltaic module group to operate synchronously. The tracking system is not limited to a single-axis tracking system; photovoltaic power plants using other tracking systems are also applicable to the cable tray device 320 disclosed in this embodiment.

[0048] The cable tray device 320 disclosed in this application includes an outer cable tray 321, an inner cable tray 322, and an elastic reset member 323. The first end of the outer cable tray 321 is hinged to the first target mounting body 100. It should be noted that the first end of the outer cable tray 321 can be directly hinged to the first target mounting body 100, or it can be indirectly hinged to the first target mounting body 100 through other components.

[0049] The second end of the outer cable tray 321 has an expansion joint. The outer cable tray 321 can be a tubular structure. When the outer cable tray 321 is a tubular structure, the depth of the expansion joint can be the same as the length of the outer cable tray 321. The outer cable tray 321 can also be a non-tubular structure, in which case the depth of the expansion joint can be less than the length of the outer cable tray 321. The depth of the expansion joint is related to the maximum overlap between the outer cable tray 321 and the inner cable tray 322, that is, to the expansion range of the cable tray device 320. Those skilled in the art can design the actual depth of the expansion joint according to requirements.

[0050] The first end of the inner cable tray 322 is inserted into the telescopic hole and slides within it, allowing adjustment of the insertion depth as needed. The second end of the inner cable tray 322 is hinged to the second target mounting body 200. It should be noted that the second end of the inner cable tray 322 can be directly hinged to the second target mounting body 200, or indirectly hinged to it via other components. The inner cable tray 322 can also be a tubular structure to reduce weight, or it can be a non-tubular structure; this embodiment does not limit the specific structure of the inner cable tray 322.

[0051] The elastic reset member 323 is connected to both the outer cable tray 321 and the inner cable tray 322. It should be noted that the connection of the elastic reset member 323 to the outer cable tray 321 and the inner cable tray 322 does not only mean that the elastic reset member 323 is directly connected to the outer cable tray 321 and the inner cable tray 322, but also includes its connection to other components that are connected to the outer cable tray 321 and the inner cable tray 322. As long as it ensures that the elastic reset member 323 can be stretched and store energy when the first end of the outer cable tray 321 and the second end of the inner cable tray 322 move away from each other, it is acceptable.

[0052] The elastic reset member 323 is at least fitted onto the outer side of a portion of the inner cable tray 322. The inner cable tray 322 can be entirely fitted into the elastic reset member 323, or only a portion thereof. In this embodiment, this arrangement allows the inner cable tray 322 to completely detach from the telescopic hole of the outer cable tray 321 while ensuring the cable tray device 320 remains open. When the elastic reset member 323 resets, its tension is applied to both the outer cable tray 321 and the inner cable tray 322, causing the first end of the outer cable tray 321 and the second end of the inner cable tray 322 to move closer together. Even though the first end of the inner cable tray 322 has detached from the telescopic hole, the elastic reset member 323 can still align the first end of the inner cable tray 322 with the telescopic hole and allow it to continue being inserted into the telescopic hole.

[0053] It should be noted that the elastic reset element 323 can be a helical spring or other elastic tubular body. This embodiment does not limit the specific material and structure of the elastic reset element 323.

[0054] In summary, the cable tray device 320 disclosed in this application connects the outer cable tray 321 and the inner cable tray 322 through an elastic reset member 323. When there is an angular deviation between the first target mounting body 100 and the second target mounting body 200 (e.g. Figure 4 As shown, the cable tray assembly 320 connected between the first target mounting body 100 and the second target mounting body 200 is subjected to an outward tensile force. When subjected to the above tensile force, the outer cable tray 321 and the inner cable tray 322 can move away from each other, while stretching the elastic reset member 323. The elastic reset member 323 deforms and stores energy during the stretching process.

[0055] When the aforementioned tension disappears, the elastic reset member 323 resets, causing the outer cable tray 321 and the inner cable tray 322 to return to their original lengths. The elastic reset member 323 is at least fitted onto the outer side of a portion of the structure of the inner cable tray 322, so that when the first target mounting body 100 and the second target mounting body 200 have a large angular deviation (e.g., ...), ... Figure 5 As shown, this allows the inner cable tray 322 to completely detach from the outer cable tray 321. It also ensures the correspondence between the inner and outer cable trays 322 under the action of the elastic reset member 323. Specifically, the elastic reset member 323 is fitted onto the outside of the inner cable tray 322, guiding its movement and allowing the inner cable tray 322 to be inserted into the telescopic hole of the outer cable tray 321 when the elastic reset member 323 resets. This embodiment can automatically adjust its length according to the angular deviation between the first target mounting body 100 and the second target mounting body 200, preventing the connection between the cable tray device 320 and the first target mounting body 100 and the second target mounting body 200 from being broken.

[0056] When the cable tray assembly 320 is extended to a long length, the inner cable tray 322 can completely disengage from the expansion hole of the outer cable tray 321. When the cable tray assembly 320 needs to be shortened, even though the elastic reset member 323 provides guidance for the inner cable tray 322, the small dimensional difference between the inner cable tray 322 and the expansion hole can easily lead to the inner cable tray 322 failing to effectively insert into the expansion hole, resulting in the cable tray assembly 320 failing to effectively reset.

[0057] In one specific embodiment of this application, the inner cable tray 322 includes an inner cable tray body 3221 and a cable tray guide head 3222, with the guide head 3222 located at the end of the inner cable tray body 3221 near the outer cable tray 321. That is, when the cable tray device 320 needs to be shortened, the guide head 3222 first enters the telescopic hole.

[0058] From the end closest to the inner cable tray body 3221 to the end furthest from the inner cable tray body 3221, the cross-sectional area of ​​the cable tray guide head 3222 gradually decreases. The cable tray guide head 3222 has a pointed structure, making the cross-sectional area of ​​the end of the cable tray guide head 3222 furthest from the inner cable tray body 3221 smaller than the cross-sectional area of ​​the inner cable tray body 3221. This results in a larger size difference between the end of the cable tray guide head 3222 furthest from the inner cable tray body 3221 and the expansion joint, making it easier for the cable tray guide head 3222 to be inserted into the expansion joint than the inner cable tray body 3221. As the cable tray guide head 3222 gradually inserts into the expansion joint, it assists the inner cable tray body 3221 in inserting into the expansion joint, preventing situations where the inner cable tray 3222 cannot be inserted into the expansion joint.

[0059] It should be noted that the cross-sectional shapes of the inner cable tray body 3221 and the cable tray guide head 3222 can be the same. For example, when the cross-section of the inner cable tray body 3221 is circular, the cross-section of the cable tray guide head 3222 can also be circular; correspondingly, when the cross-section of the inner cable tray body 3221 is polygonal (such as rectangular), the cross-section of the cable tray guide head 3222 can also be polygonal. In this embodiment, the cross-sectional shapes of the inner cable tray body 3221 and the cable tray guide head 3222 are designed to be the same, making the inner cable tray 322 easier to manufacture. Moreover, when the cross-sectional area of ​​the large-area end of the cable tray guide head 3222 can be designed to be the same as the cross-sectional area of ​​the inner cable tray body 3221, it can be ensured that the cable tray guide head 3222 can smoothly transition to the inner cable tray body 3221, making it easier for the cable tray guide head 3222 to guide the inner cable tray body 3221 into the telescopic hole.

[0060] For example, the cable tray guide head 3222 can be a conical structure, a pyramidal structure, a frustum of a cone structure, or a frustum of a pyramidal structure. It should be noted that the cable tray guide head 3222 can also be other structures, as long as the cross-sectional area of ​​the cable tray guide head 3222 gradually decreases from the end closest to the inner cable tray body 3221 to the end furthest from the inner cable tray body 3221.

[0061] The inner cable tray body 3221 and the cable tray guide head 3222 can be an integrated structure. Designing the two as an integrated structure eliminates the need for connecting parts, avoiding stress concentration at weak points such as threads and clips, and resulting in stronger overall bending and torsional resistance.

[0062] Of course, the cable tray guide head 3222 is detachably connected to the inner cable tray body 3221. Specifically, the cable tray guide head 3222 can be detachably connected to the inner cable tray body 3221 via threads, clips, fasteners, etc. Because the cable tray guide head 3222 is detachably connected to the inner cable tray body 3221, when the cable tray guide head 3222 is damaged, only the cable tray guide head 3222 needs to be replaced, avoiding the complete scrapping of the inner cable tray 322.

[0063] In one specific embodiment of this application, the first end of the outer cable tray 321 can be directly hinged to the first target mounting body 100 via the first universal joint 324, or indirectly hinged to the first target mounting body 100 via the first universal joint 324. Correspondingly, the second end of the inner cable tray 322 can be directly hinged to the second target mounting body 200 via the second universal joint 325, or indirectly hinged to the second target mounting body 200 via the second universal joint 325.

[0064] One end of the elastic reset member 323 connected to the outer cable tray 321 can be connected to the outer wall of the outer cable tray 321, the inner wall of the outer cable tray 321, or the end face of the outer cable tray 321. It can also be connected to the first universal joint 324 at the first end of the outer cable tray 321. To improve the alignment guidance effect of the elastic reset member 323 on the inner cable tray 322, the dimensional difference between the elastic reset member 323 and the inner cable tray 322 should not be too large. Therefore, it is preferable to fix the elastic reset member 323 to the inner wall or end face of the outer cable tray 321. Compared to fixing the elastic reset member 323 to the outer wall of the outer cable tray 321, the elastic reset member 323 can be closer in size to the inner cable tray 322 to improve the alignment effect between the inner cable tray 322 and the outer cable tray 321.

[0065] The other end of the elastic reset member 323, i.e., the end of the elastic reset member 323 connected to the inner cable tray 322, can be connected to the outer wall of the inner cable tray 322, or to the second universal joint 325 at the second end of the inner cable tray 322. In order to improve the centering and guiding effect of the elastic reset member 323 on the inner cable tray 322, the elastic reset member 323 is preferably fixed to the second end of the inner cable tray 322, or fixed to the second universal joint 325. This arrangement allows the elastic reset member 323 to completely enclose the inner cable tray 322, so that even if the cable tray device 320 performs an extension or retraction action, the inner cable tray 322 is always enclosed within the elastic reset member 323. This prevents the inner cable tray 322 from becoming misaligned after it detaches from the expansion joint due to the small constraint size of the elastic reset member 323 on the inner cable tray 322, thus preventing it from being effectively aligned with the expansion joint.

[0066] This application also discloses a cable tray assembly 300, which includes a cable tray device 320 and a cable tray main beam 310. The cable tray device 320 is the cable tray device 320 disclosed in the above embodiments. Since it has the above-described cable tray device 320, it has all the technical effects of the above-described cable tray device 320, and will not be described again here.

[0067] The cable tray assembly 320 is connected to the first target mounting body 100 and the second target mounting body 200 via the cable tray main beam 310. Alternatively, the cable tray main beam 310 may be omitted, and the cable tray assembly 320 may be directly hinged to the first target mounting body 100 and the second target mounting body 200 via corresponding first universal joints 324 and second universal joints 325.

[0068] The cable tray assembly 300 disclosed in this embodiment, by setting the main beam 310, can be easily connected to the first target mounting body 100 and the second target mounting body 200 without changing the structure of the first target mounting body 100 and the second target mounting body 200. The cable tray device 320 can be connected between the first target mounting body 100 and the second target mounting body 200 by directly fixing the main beam 310 to the first target mounting body 100 and the second target mounting body 200, so as to facilitate the walking wheels of the photovoltaic cleaning robot to walk in the span gap between the first target mounting body 100 and the second target mounting body 200.

[0069] There are two main cable tray beams 310, which are respectively fixed to the first target mounting body 100 and the second target mounting body 200. Specifically, the two main cable tray beams 310 are fixed to the purlins of the first target mounting body 100 and the second target mounting body 200. It should be noted that the main cable tray beams 310 can also be fixed to other positions on the first target mounting body 100 and the second target mounting body 200, and are not limited to the purlins.

[0070] Ideally, the main cable tray beams 310 on the first target mounting body 100 and the second target mounting body 200 should be parallel. Of course, if the on-site installation environment makes it impossible to ensure that the edges of the first target mounting body 100 and the second target mounting body 200 are parallel, then it is permissible for the main cable tray beams 310 on the first target mounting body 100 and the second target mounting body 200 not to be parallel.

[0071] Both ends of the main beam 310 are connected to bridge devices 320. Taking the first target mounting body 100 and the second target mounting body 200 as photovoltaic module groups as an example, the first target mounting body 100 and the second target mounting body 200 are usually arranged at an angle, so that one end of the photovoltaic module group is higher and the other end is lower. The main beam 310 is arranged at the same angle as the photovoltaic module group, so that one end of the main beam 310 is higher and the other end is lower. Bridge devices 320 need to be arranged at both the higher and lower ends to support the walking wheels at both ends of the photovoltaic cleaning robot.

[0072] The first end of the outer cable tray 321 is hinged to one of the main cable tray beams 310 via a first universal joint 324, and the second end of the inner cable tray 322 is hinged to the other main cable tray beam 310 via a second universal joint 325. In actual installation, the two ends of the cable tray assembly 320 can be first hinged to the main cable tray beams 310 at both ends via the first universal joint 324 and the second universal joint 325, respectively. Then, the two main cable tray beams 310 are fixed to the first target mounting body 100 and the second target mounting body 200, respectively. The cable tray assembly 300 can then be assembled below the photovoltaic modules. Finally, the two main cable tray beams 310 of the cable tray assembly 300 are fixed to the first target mounting body 100 and the second target mounting body 200, respectively. As can be seen, the installation process on the photovoltaic module only requires fixing the main beam 310 of the cable tray. The main beam 310 of the cable tray can be fixed to the first target mounting body 100 and the second target mounting body 200 by fasteners, which is simpler and easier than passing through the hinge shaft of the first universal joint 324 and the second universal joint 325.

[0073] When there is a large angular deviation between the first target mounting body 100 and the second target mounting body 200, the cable tray main beam 310 fixed on the first target mounting body 100 and the second target mounting body 200 will also have a large angular deviation as it moves with the first target mounting body 100 and the second target mounting body 200. For ease of understanding, the points where the two cable tray main beams 310 are connected to the two ends of the cable tray device 320 are defined as mounting points. The distance between the mounting points of the two cable tray main beams 310 will increase due to the aforementioned angular deviation. Therefore, the length of the cable tray device 320 needs to be adaptively increased to maintain the connection with the two cable tray main beams 310. The outer cable tray 321 and the inner cable tray 322 slide relative to each other until they separate. The elastic reset member 323 is stretched, and the outer cable tray 321 and the inner cable tray 322 are kept connected by the elastic reset member 323. The elastic reset member 323 can maintain the alignment relationship between the outer cable tray 321 and the inner cable tray 322.

[0074] As the angular deviation between the first target mounting body 100 and the second target mounting body 200 gradually returns to zero, and they return to synchronous rotation, the distance between the mounting points of the two main beams 310 of the cable tray will gradually return to its initial distance due to the gradual return of the angular deviation to zero. Therefore, the length of the cable tray device 320 will be adaptively shortened to maintain the connection with the two main beams 310 of the cable tray. The outer cable tray 321 and the inner cable tray 322 slide relative to each other until the inner cable tray 322 can accurately retract into the outer cable tray 321 under the action of the elastic reset member 323. At this time, the outer cable tray 321 and the inner cable tray 322 will gradually return to the fitted state until the photovoltaic cleaning can be carried out and the robot can operate normally.

[0075] In a specific embodiment of this application, the structures of the first universal joint 324 and the second universal joint 325 may be the same or different, and those skilled in the art can design them according to their needs. Both the first universal joint 324 and the second universal joint 325 may include a first rotating part, a second rotating part, and a rotating shaft, with the first rotating part and the second rotating part rotatably connected via the rotating shaft. The first rotating part is hinged to the main beam 310 of the cable tray, the second rotating part of the first universal joint 324 is hinged to the outer cable tray 321, and the second rotating part of the second universal joint 325 is hinged to the inner cable tray 322.

[0076] If the first universal joint 324 and the second universal joint 325 have the same size specifications, it can greatly reduce the types of structural components, reduce costs, facilitate on-site installation, and help shorten the construction period.

[0077] It should be noted that the first universal joint 324 and the second universal joint 325 may also consist only of a first rotating part and a second rotating part, which are directly fixedly connected. For example, the first rotating part and the second rotating part are an integral structure or welded together, rather than being rotatably connected by a shaft. Alternatively, one of the first universal joint 324 and the second universal joint 325 may include a first rotating part, a second rotating part, and a shaft, while the other may consist only of a first rotating part and a second rotating part.

[0078] In this embodiment, the area enclosed by the two main cable tray beams 310 is defined as the span region. The span region is typically a rectangular structure, and its center point is the intersection of the diagonals of the rectangle it encloses. The cable tray devices 320 at both ends of the main cable tray beams 310 are arranged symmetrically around the center point of the span region or symmetrically along the centerline of the span region. The centerline of the span region is the centerline of the span region along the extension direction of the main cable tray beams 310. If the main cable tray beams 310 form the long side of the span region, then the centerline of the span region is the centerline along the length direction of the span region.

[0079] For ease of understanding, the two main cable tray beams 310 are defined as the first main cable tray beam and the second main cable tray beam, respectively. The symmetrical arrangement along the centerline of the span area means that in the two cable tray devices 320 on the upper and lower sides, the outer cable tray 321 is connected to the first main cable tray beam, and in the two cable tray devices 320 on the upper and lower sides, the inner cable tray 322 is connected to the second main cable tray beam.

[0080] The symmetrical arrangement along the center point of the span area means that, of the two cable tray devices 320 on the upper and lower sides, the outer cable tray 321 of one is connected to the main beam of the first cable tray, and the outer cable tray 321 of the other is connected to the main beam of the second cable tray; and of the two cable tray devices 320 on the upper and lower sides, the inner cable tray 322 of one is connected to the main beam of the second cable tray, and the inner cable tray 322 of the other is connected to the main beam of the first cable tray.

[0081] This application also discloses a photovoltaic power station, which includes at least one column of photovoltaic modules. The photovoltaic module column includes at least two photovoltaic module groups arranged at intervals in sequence, and each photovoltaic module group is equipped with an independent tracking system.

[0082] In the same photovoltaic module array, any two adjacent photovoltaic module groups are connected by a bridge frame assembly 300, and / or, a photovoltaic module group and a parking position are connected by a bridge frame assembly, wherein the bridge frame assembly 300 is the bridge frame assembly 300 disclosed in the above embodiments. The photovoltaic power station disclosed in the embodiments of this application, having the aforementioned bridge frame assembly 300, possesses all the technical effects of the aforementioned bridge frame assembly 300, which will not be repeated here.

[0083] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0084] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0085] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0086] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A cable tray device, characterized in that, include: An outer cable tray (321) has a first end for hinged to a first target mounting body (100) and a second end for having a telescopic hole. The inner cable tray (322) has a first end for inserting into the telescopic hole and slidingly engaging with the telescopic hole, and a second end for hinged to the second target mounting body (200), wherein at least one of the first target mounting body (100) and the second target mounting body (200) is a photovoltaic module group; The elastic reset member (323) is connected to the outer cable tray (321) and the inner cable tray (322) respectively, and the elastic reset member (323) is at least sleeved on the outside of a part of the structure of the inner cable tray (322).

2. The cable tray device as described in claim 1, characterized in that, The inner cable tray (322) includes an inner cable tray body (3221) and a cable tray guide head (3222), wherein the cable tray guide head (3222) is located at one end of the inner cable tray body (3221) near the outer cable tray (321); The cross-sectional area of ​​the cable tray guide head (3222) gradually decreases from one end near the inner cable tray body (3221) to the end away from the inner cable tray body (3221).

3. The cable tray device as described in claim 2, characterized in that, The cable tray guide head (3222) is a conical structure, a pyramidal structure, a frustum of a cone structure, or a frustum of a pyramidal structure.

4. The cable tray device as described in claim 2, characterized in that, The inner cable tray body (3221) and the cable tray guide head (3222) are an integral structure; or, the cable tray guide head (3222) is detachably connected to the inner cable tray body (3221).

5. The cable tray device as described in claim 1, characterized in that, One end of the elastic reset member (323) is connected to the outer wall, inner wall, end face of the outer cable tray (321) or the first universal joint (324) at the first end of the outer cable tray (321); The other end of the elastic reset member (323) is connected to the outer wall of the inner cable tray (322) or to the second universal joint (325) at the second end of the inner cable tray (322).

6. A cable tray assembly, characterized in that, include: The cable tray assembly (320) is the cable tray assembly (320) as described in any one of claims 1-5; The main beam (310) of the cable tray is connected to the first target mounting body (100) and the second target mounting body (200) through the main beam (310). There are two main beams (310), which are respectively fixed to the first target mounting body (100) and the second target mounting body (200). The cable tray device (320) is connected to both ends of the main beam (310). The first end of the outer cable tray (321) is hinged to one of the main beams (310) through the first universal joint (324). The second end of the inner cable tray (322) is hinged to the other main beam (310) through the second universal joint (325).

7. The cable tray assembly as claimed in claim 6, characterized in that, Both the first universal joint (324) and the second universal joint (325) include a first rotating part and a second rotating part; The first rotating part is hinged to the main beam (310) of the cable tray, the second rotating part of the first universal joint (324) is hinged to the outer cable tray (321), and the second rotating part of the second universal joint (325) is hinged to the inner cable tray (322).

8. The cable tray assembly as claimed in claim 6, characterized in that, The two main beams (310) of the cable tray are respectively fixed to the purlins of the first target mounting body (100) and the second target mounting body (200).

9. The cable tray assembly as claimed in claim 6, characterized in that, The area enclosed by the two main bridge beams (310) is the span area. The bridge devices (320) at both ends of the main bridge beams (310) are arranged symmetrically along the center point of the span area or along the center line of the span area. The center line of the span area is the center line of the span area along the extension direction of the main bridge beams (310).

10. A photovoltaic power station, characterized in that, It includes at least one column of photovoltaic modules, the column of photovoltaic modules comprising at least two groups of photovoltaic modules arranged at intervals in sequence, and each group of photovoltaic modules is equipped with an independent tracking system; In the same photovoltaic module column, any two adjacent photovoltaic module groups are connected by a bridge assembly (300), and / or, the photovoltaic module group and the parking position are connected by a bridge assembly (300), wherein the bridge assembly (300) is the bridge assembly (300) as described in any one of claims 6-9.

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