Height-adjustable cable bridge

Abstract

The invention relates to the technical field of photovoltaic power generation, and discloses a height-adjustable cable bridge which comprises a bridge body, two supports, a height limiting mechanism and two cable winding devices. The bridge comprises a cable laying part and two sliding parts, the cable laying part is hollow and used for arranging cables, and the two sliding parts are arranged at the two ends of the cable laying part respectively; the two supports are arranged at the two rows of photovoltaic modules respectively, one side of each support is connected with the corresponding photovoltaic module, the other side of each support is connected with the corresponding sliding part, and the bridge can be driven by external force to ascend and descend on the supports; the height limiting mechanism comprises limiting pieces which are arranged on the supports and used for limiting the height position of the bridge, and each cable winding device is correspondingly arranged on one support. According to the cable bridge, the position of the bridge can be adjusted by lifting up and down, so that passing of agricultural machinery is not hindered, and the requirement of a photovoltaic power station for mechanical agricultural operation can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a height-adjustable cable bridge. Background Art

[0002] A new type of photovoltaic power station combines photovoltaic power generation with agricultural production. Crops can be planted beneath the photovoltaic racks and between the arrays, achieving three-dimensional land utilization. This creates a hybrid model where the upper photovoltaic panels generate electricity while the lower panels support agricultural production.

[0003] DC cables for photovoltaic power plants are generally laid using two methods: direct burial or cable bridge installation. Direct burial involves burying the cables underground, but this requires extensive excavation, which is time-consuming and labor-intensive. The damp underground environment can easily degrade the insulation performance of the cables, increasing cable failure rates. Repairs after crop planting are also difficult. Cable bridge installation involves installing a cable bridge between two rows of photovoltaic mountings, within which the cables are laid. While cable bridge installation addresses the challenges of direct burial, to minimize obstruction and reduce the efficiency of the photovoltaic modules, the cable bridge is often installed below their height. This, in turn, hinders the passage of agricultural machinery, hindering mechanized agricultural operations within the photovoltaic power plant. Summary of the Invention

[0004] In view of this, the present invention provides a height-adjustable cable tray to solve the problem that the existing cable tray will hinder the passage of agricultural machinery after being set up, thereby affecting the mechanized agricultural operations of the photovoltaic power station.

[0005] In a first aspect, the present invention provides a height-adjustable cable tray, disposed between two adjacent rows of photovoltaic modules, comprising:

[0006] The bridge comprises: a cable-laying portion and two sliding portions, wherein the cable-laying portion is hollow inside and is used to arrange cables, and the two sliding portions are respectively arranged at both ends of the cable-laying portion;

[0007] Two brackets, the two brackets are respectively arranged at the two rows of photovoltaic modules, one side of the bracket is connected to the photovoltaic module, the other side is connected to the sliding part, and the bridge can be raised and lowered on the bracket by external force;

[0008] The height limiting mechanism includes a limiting member provided on the bracket for limiting the height position of the bridge:

[0009] Two cable reeling devices, each of the cable reeling devices is correspondingly arranged on one of the brackets.

[0010] Beneficial effects

[0011] The bridge is connected to the PV panels via brackets, with the DC cables routed within the cable reel and the bridge's cabling section. The bridge can slide on the brackets under external force, adjusting its height and position. Limiters are provided to maintain this position. Therefore, during busy farming seasons, the bridge can be raised to facilitate the passage of agricultural machinery underneath without disrupting mechanized agricultural operations within the PV plant.

[0012] In an optional embodiment, the bracket includes: a photovoltaic connector, a bridge connector and an extension frame, the photovoltaic connector is connected to the purlin at the bottom of the photovoltaic component, the connector is slidably arranged on the bridge connector, and the extension frame is arranged between the photovoltaic connector and the bridge connector.

[0013] In an optional embodiment, the extension frame includes: an upper connecting member and a lower connecting member, the two ends of the upper connecting member are respectively connected to the upper ends of the photovoltaic connecting member and the bridge connecting member, and the lower connecting member includes: a first connecting part and a second connecting part, one end of the first connecting part is connected to the lower end of the photovoltaic connecting member, and the other end is connected to one end of the second connecting part, and the other end of the second connecting part is connected to the lower end of the bridge connecting member.

[0014] In an optional embodiment, the height limiting mechanism further includes: a first socket and a second socket, the first socket is arranged on the sliding part, and a plurality of second sockets are arranged at intervals on the bridge connector, and the limiting member passes through the first socket and is inserted into the second socket.

[0015] Beneficial effects

[0016] By changing the position of the limiting member at the second plug hole, the bridge can be limited to different height positions, and the adjustment method is simple and easy to operate.

[0017] In an optional embodiment, the cable winding device includes: a cable box, a winding mechanism and an elastic control mechanism. The cable box is arranged on the bracket and has a wire passing hole thereon. The winding mechanism is arranged in the cable box and includes: a rotating shaft and a turntable. The turntable is provided at the end of the rotating shaft. One end of the elastic control mechanism is connected to the edge of the turntable, and the other end is connected to the inner wall of the cable box.

[0018] In an optional embodiment, the elastic control mechanism includes: a flexible steel wire and an elastic member, one end of the elastic member is connected to the inner wall of the cable box, and the other end is connected to one end of the flexible steel wire, and the other end of the flexible steel wire is connected to the edge of the turntable.

[0019] Beneficial effects

[0020] When the bridge rises, the cable on the shaft is pulled out, and the turntable rotates, reeling in the flexible wire and simultaneously stretching the elastic element, which then stores energy. When the bridge descends, the elastic element releases energy, pulling the turntable through the flexible wire, thereby reeling the cable onto the shaft. This elastic control mechanism allows for automatic cable reeling, making it more convenient to use.

[0021] In an optional embodiment, a partition is provided inside the cable box, and the rotating shaft passes through the partition.

[0022] Beneficial effects

[0023] After setting the partition, the interior of the cable box is divided into two cavities, which respectively accommodate the positive and negative poles of the DC cable. This can effectively prevent short circuits between the positive and negative poles when multiple groups of cables in the cable box are running, and has higher safety.

[0024] In an optional embodiment, the cabling portion is arched.

[0025] Beneficial effects

[0026] The arched cable-laying section prevents the formation of depressions due to the deadweight of the bridge and cables, which could result in water accumulation risk points inside. It also reduces additional wear caused by the cables moving from horizontal to vertical directions.

[0027] In an optional embodiment, the cable tray also includes an auxiliary operating part for driving the tray to rise and fall, and the auxiliary operating part includes: a rod head, a rod body and an operating head, one end of the rod body is connected to the middle part of the rod head, and the operating heads are respectively provided at both ends of the rod head, and the operating head has a groove.

[0028] In an optional embodiment, an insulating handle is provided at the other end of the rod body.

[0029] Beneficial effects

[0030] With the help of auxiliary operating parts, it is convenient for workers to control the lifting and lowering of the bridge, which improves the convenience and safety of work. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 Schematic diagram of the installation of a cable tray according to an embodiment of the present invention;

[0033] Figure 2Schematic diagram of a bracket in a cable tray according to an embodiment of the present invention;

[0034] Figure 3 Schematic diagram of a cable tray in an embodiment of the present invention;

[0035] Figure 4 Schematic diagram of a cable reeling device in a cable tray according to an embodiment of the present invention;

[0036] Figure 5 Schematic diagram of auxiliary operating components in a cable tray according to an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Photovoltaic modules;

[0039] 2. Bridge, 21. Cable laying unit, 22. Sliding unit;

[0040] 3. Bracket, 31. Photovoltaic connector, 32. Bridge connector, 331. Upper connector, 332. Lower connector;

[0041] 4. Height limiting mechanism, 41. Limiting member, 42. First plug hole, 43. Second plug hole;

[0042] 5. Cable reeling device, 51. Cable box, 511. Wire hole, 521. Rotating shaft, 522. Rotating disk, 531. Flexible steel wire, 532. Elastic member;

[0043] 61. Rod head, 62. Rod body, 63. Operating head, 64. Insulated handle. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] The following combination Figures 1 to 5 , describing embodiments of the present invention.

[0049] According to an embodiment of the present invention, on the one hand, a height-adjustable cable bridge 2 is provided, which is arranged between two adjacent rows of photovoltaic modules 1. The cable bridge 2 includes: a bridge 2, two brackets 3, a height limiting mechanism 4 and two cable winding devices 5. The bridge 2 includes: a cable laying part 21 and two sliding parts 22. The interior of the cable laying part 21 is hollow for arranging cables, and the two sliding parts 22 are respectively arranged at both ends of the cable laying part 21. The two brackets 3 are respectively arranged at two rows of photovoltaic modules 1, one side of the bracket 3 is connected to the photovoltaic module 1, and the other side is connected to the sliding part 22, and the bridge 2 can be raised and lowered on the bracket 3 by external force. The height limiting mechanism 4 includes: a limiting member 41, which is arranged on the bracket 3 and is used to limit the height position of the bridge 2. Each cable winding device 5 is correspondingly arranged on a bracket 3.

[0050] In an agricultural photovoltaic power station, photovoltaic modules 1 are typically arranged in neat rows. Each module 1 is tilted and mounted on piles or columns, generating electricity by receiving solar radiation. A cable tray 2 is installed between adjacent rows of modules 1. This cable tray 2 is used to route direct current (DC) cables, which connect the positive and negative cables of the modules 1 in series, forming a complete series circuit and transmitting DC power to other devices.

[0051] The two brackets 3 are arranged correspondingly at two rows of photovoltaic modules 1, that is, each bracket 3 is connected to a group of photovoltaic modules 1. The bridge 2 plays a key role in laying DC cables. The DC cables can be arranged in the hollow cavity of the cable laying part 21 of the bridge 2, and the two sliding parts 22 at both ends of the cable laying part 21 are respectively connected to the two brackets 3 to realize the installation and fixation of the bridge 2. And under the drive of external force, the bridge 2 can slide and rise and fall on the bracket 3, and its sliding direction is along the vertical direction, that is, perpendicular to the ground. The height limiting mechanism 4 is used to limit the height position of the bridge 2, that is, after the bridge 2 is lifted to the appropriate height, the position of the bridge 2 can be locked by setting a limiting member 41. There are many ways of limiting, for example, the limiting member 41 passes through the sliding part 22 of the bridge 2 and is then fixed to the bracket 3, or the limiting member 41 is directly fixed to the bracket 3, supporting from the bottom of the bridge 2, and preventing the bridge 2 from falling can also be used for limiting. In addition, a cable reeling device 5 is provided on each bracket 3 , and a certain amount of cable is retained in the cable reeling device 5 so that it can be raised and lowered along with the bridge 2 .

[0052] During the off-season, bridge 2 can be kept at its lowest position, at the bottom of bracket 3, without interfering with the operation of photovoltaic modules 1. During the busy season, the stoppers 41 can be removed, bridge 2 raised, and then locked in place using the stoppers 41. This prevents agricultural machinery from passing under bridge 2, allowing the photovoltaic power station to carry out mechanized agricultural operations normally.

[0053] In one embodiment, the bracket 3 includes: a photovoltaic connector 31, a bridge connector 32 and an extension frame. The photovoltaic connector 31 is connected to the purlin at the bottom of the photovoltaic component 1, the connector is slidably arranged on the bridge connector 32, and the extension frame is arranged between the photovoltaic connector 31 and the bridge connector 32.

[0054] Specifically, such as Figure 2 As shown, the bottom surface of the photovoltaic module 1 has multiple purlins, and photovoltaic connectors 31 are connected to the ends of these purlins. Since the photovoltaic module 1 is generally tilted, the photovoltaic connectors 31 are also tilted. The bridge connector 32 is connected to the sliding portion 22 of the bridge 2. However, since the bridge 2 needs to be raised and lowered, the bridge connector 32 and the photovoltaic connector 31 cannot be directly connected. Instead, the frame body needs to be extended outward a certain distance to allow the bridge 2 to be raised and lowered without interfering with other parts of the bracket 3.

[0055] In one embodiment, the extension frame includes: an upper connecting member 331 and a lower connecting member 332, the two ends of the upper connecting member 331 are respectively connected to the upper ends of the photovoltaic connecting member 31 and the bridge connecting member 32, and the lower connecting member 332 includes: a first connecting part and a second connecting part, one end of the first connecting part is connected to the lower end of the photovoltaic connecting member 31, and the other end is connected to one end of the second connecting part, and the other end of the second connecting part is connected to the lower end of the bridge connecting member 32.

[0056] like Figure 2 As shown, the upper connector 331 is connected to the upper ends of the photovoltaic connector 31 and the bridge connector 32, and its extended length generally ranges from 0.1 to 0.3 meters. The lower connector 332 is connected to the lower ends of the photovoltaic connector 31 and the bridge connector 32. It is formed by connecting a first connecting portion and a second connecting portion, and has an L-shaped shape. The length of the first connecting portion is equal to the length of the photovoltaic connector 31 projected to the ground. The second connecting portion is located directly below the upper connector 331 and is equal in length to the upper connector 331.

[0057] In other embodiments, the extension frame may also be provided with a greater number of connecting pieces, so that the formed bracket 3 is more stable.

[0058] For example, in this embodiment, the bracket 3 is entirely made of aluminum alloy, and the connecting rods can be welded together to secure the bracket. The aluminum alloy bracket 3 offers high support strength, is lightweight, and is resistant to rust. Furthermore, the photovoltaic connector 31 can be drilled at locations corresponding to the purlins, allowing it to be connected to the purlins using bolts and nuts.

[0059] In one embodiment, the cabling portion 21 is arched.

[0060] like Figure 3 As shown, the cable routing portion 21 of the bridge 2 is elongated and cylindrical, and can be constructed from a hollow aluminum alloy tube encased in a PVC (polyvinyl chloride) tube. The cable routing portion 21 can be arched upward at a 5° angle. This shape prevents the bridge 2 from forming depressions due to the weight of the bridge 2 and cables, which could create internal water accumulation risk. It also reduces additional wear and tear on the cables as they move from lateral to longitudinal direction.

[0061] In another embodiment, the cabling portion 21 may also be a conventional straight tube.

[0062] Furthermore, the sliding portion 22 is a hollow cylinder, but the axis of the sliding portion 22 is perpendicular to the axis of the bridge 2. The sliding portion 22 is sleeved on the outside of the bridge connector 32 and can slide up and down on the bridge connector 32.

[0063] In one embodiment, the height limiting mechanism 4 also includes: a first socket 42 and a second socket 43, the first socket 42 is arranged on the sliding part 22, and multiple second sockets 43 are arranged at intervals on the bridge connector 32, and the limiting member 41 passes through the first socket 42 and is inserted into the second socket 43.

[0064] The number of the first jacks 42 can be one or more, and they are opened on the sliding portion 22. The number of the second jacks 43 is at least two, one is located at the upper end of the bridge connector 32, and the other is located at the lower end of the bridge connector 32. Figure 1 As shown, in this embodiment, the sliding portion 22 is provided with a plurality of first jacks 42, and the bridge connector 32 is provided with a plurality of second jacks 43, so that the height adjustment of the bridge 2 is more precise and accurate. The limiter 41 is a positioning pin that can be plugged into the first jack 42 and the second jack 43.

[0065] In another embodiment, the first insertion hole 42 may not be provided, and the limiting member 41 may be directly inserted into the second insertion hole 43 , and the sliding portion 22 of the bridge 2 falls on the limiting member 41 to achieve limiting fixation.

[0066] In some embodiments, the cable winding device 5 includes: a cable box 51, a winding mechanism and an elastic control mechanism. The cable box 51 is arranged on the bracket 3, and a wire hole 511 is opened on it. The winding mechanism is arranged in the cable box 51, which includes: a rotating shaft 521 and a turntable 522. The turntable 522 is provided at the end of the rotating shaft 521. One end of the elastic control mechanism is connected to the edge of the turntable 522, and the other end is connected to the inner wall of the cable box 51.

[0067] like Figure 4 As shown, the cable box 51 consists of two connected parts, one part is a round box of the main body, and the other part is a square box. A wire hole 511 is provided on the top surface of the square box, which is opposite to the wire hole 511 provided at one end of the cabling part 21, so as to facilitate the cable laying from the cable box 51 to the bridge 2. The interiors of the square box and the round box are connected, and a winding mechanism and an elastic control mechanism are provided inside the round box. The winding mechanism includes a rotatable shaft 521 and a turntable 522. The shaft 521 has a smaller diameter and is used to wind up the cable; the turntable 522 has a larger diameter, and its edge is connected to one end of the elastic control mechanism. The elastic control mechanism can realize elastic energy storage and potential energy, which is convenient for controlling the winding of the cable.

[0068] In one embodiment, the elastic control mechanism includes: a flexible steel wire 531 and an elastic member 532, one end of the elastic member 532 is connected to the inner wall of the cable box 51, and the other end is connected to one end of the flexible steel wire 531, and the other end of the flexible steel wire 531 is connected to the edge of the turntable 522.

[0069] like Figure 4As shown, the elastic member 532 is preferably a spring, one end of which is fixedly connected to the inner wall of the cable box 51. The flexible steel wire 531 can be wound on the turntable 522 or straightened. The specific working process of the elastic control mechanism is as follows: when the external force drives the cable to be pulled out from the rotating shaft 521 (corresponding to the rising process of the bridge 2), the turntable 522 will rotate with the rotating shaft 521. At this time, the flexible steel wire 531 will also be wound up, and the flexible steel wire 531 will also stretch the spring, that is, the spring will store energy. Therefore, when the external force is released (corresponding to the descending process of the bridge 2), the spring will release energy, the spring as a whole will shorten, and the flexible steel wire 531 will be straightened, and at the same time, it will drive the turntable 522 and the rotating shaft 521 to rotate and reel the cable back onto the rotating shaft 521. The elastic control mechanism is set to automatically retract and release the cable when the bridge 2 is raised or lowered, which is more convenient to use.

[0070] In one embodiment, a partition is provided inside the cable box 51 , and the rotating shaft 521 passes through the partition.

[0071] An insulating partition is installed inside the cable box 51, the circular box itself. The rotating shaft 521 passes through the center of the partition. The partition divides the interior of the circular box into two chambers, allowing for separate winding of the positive and negative poles of the DC cable. This effectively prevents short circuits between the positive and negative poles when multiple cables are in operation within the cable box 51, providing increased safety.

[0072] In one embodiment, the cable tray 2 also includes an auxiliary operating part for driving the tray 2 to rise and fall, and the auxiliary operating part includes: a rod head 61, a rod body 62 and an operating head 63, one end of the rod body 62 is connected to the middle part of the rod head 61, and operating heads 63 are respectively provided at both ends of the rod head 61, and the operating head 63 has a groove.

[0073] The lifting of the bridge frame 2 requires external force, and its lifting height can reach 3.5 meters. It is difficult to complete the lifting work by manual operation alone. Therefore, equipping the staff with an auxiliary operating part can improve the convenience of operation.

[0074] like Figure 5 As shown, a rod head 61 and a rod body 62 are connected to form a T-shaped rod. The rod head 61 is approximately 0.4 meters long, and the rod body 62 is approximately 3 meters long. An operating head 63 is provided at each end of the rod head 61. The operating head 63 is approximately V-shaped, and the grooves therein are configured to engage with the outer wall of the bridge 2 during use. In other embodiments, the shapes of the operating head 63 and the grooves may vary, and this embodiment does not impose any specific limitations.

[0075] This auxiliary operating member provides a more balanced supporting force when in use. The two operating heads 63 can better distribute the weight during lifting, keeping the entire bridge 2 stable during the lifting process and less prone to tilting or deformation. At the same time, the structure of the rod head 61 increases the strength of the rod body 62 to a certain extent. Since the two operating heads 63 share the weight of the bridge 2, it can withstand greater loads and is less likely to bend or break, thereby improving the durability and service life of the entire rod body 62.

[0076] In one embodiment, an insulating handle 64 is provided at the other end of the rod body 62 .

[0077] The insulating handle 64 is made of glass fiber reinforced epoxy resin and is arranged at the other end of the rod body 62. Its length is about 0.2 meters. The insulating handle 64 is the part that the staff holds in their hands and can ensure the safety of the staff.

[0078] The working process of the cable tray 2 provided in this embodiment is described as follows:

[0079] During the off-season, the cable tray 2 is generally located at the bottom of the cable tray connector 32, and the cable tray 2 does not block the photovoltaic module 1. At this time, the elastic member 532 (spring) in the elastic control mechanism is in the initial state, that is, the elastic member 532 (spring) is not stretched or compressed.

[0080] During the busy farming season, the limiting member 41 is first removed, and then a worker holds the auxiliary operating member at the bottom of the bridge 2 to lift the bridge 2 and slide it upward. When the bridge 2 reaches a suitable height or reaches the top of the bridge connector 32, the limiting member 41 is inserted into the first and second holes 42, 43 in sequence to limit the bridge 2 again. In this way, agricultural machinery can work at the bottom of the bridge 2.

[0081] During the ascending process of the bridge 2, the cables inside the cable box 51 are continuously pulled out, and the elastic member 532 (spring) is stretched and stores energy. When the bridge 2 needs to be lowered again, the staff holds the auxiliary operating member at the bottom of the bridge 2 and slowly lowers the bridge 2. The elastic member 532 (spring) releases energy and drives the shaft 521 to rotate, reeling the excess cables back onto the shaft 521.

[0082] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A height-adjustable cable tray, arranged between two adjacent rows of photovoltaic modules (1), characterized in that: include: A bridge (2), the bridge (2) comprising: a cable-laying portion (21) and two sliding portions (22); the cable-laying portion (21) is hollow inside and is used to arrange cables; the two sliding portions (22) are respectively arranged at both ends of the cable-laying portion (21); Two brackets (3), the two brackets (3) are respectively arranged at two rows of photovoltaic modules (1), one side of the bracket (3) is connected to the photovoltaic module (1), and the other side is connected to the sliding portion (22), and the bridge (2) can be driven by external force to rise and fall on the bracket (3); A height limiting mechanism (4), the height limiting mechanism (4) comprising: a limiting member (41), the limiting member (41) being arranged on the bracket (3) and used to limit the height position of the bridge (2); Two cable reeling devices (5), each of the cable reeling devices (5) is correspondingly arranged on one of the brackets (3).

2. The height-adjustable cable tray according to claim 1, characterized in that: The bracket (3) comprises: a photovoltaic connector (31), a bridge connector (32) and an extension frame, wherein the photovoltaic connector (31) is connected to the purlin at the bottom of the photovoltaic assembly (1), the connector is slidably arranged on the bridge connector (32), and the extension frame is arranged between the photovoltaic connector (31) and the bridge connector (32).

3. The height-adjustable cable tray according to claim 2, characterized in that: The extension frame comprises: an upper connecting member (331) and a lower connecting member (332), wherein the two ends of the upper connecting member (331) are respectively connected to the upper ends of the photovoltaic connecting member (31) and the bridge connecting member (32), and the lower connecting member (332) comprises: a first connecting portion and a second connecting portion, wherein one end of the first connecting portion is connected to the lower end of the photovoltaic connecting member (31), and the other end is connected to one end of the second connecting portion, and the other end of the second connecting portion is connected to the lower end of the bridge connecting member (32).

4. The height-adjustable cable tray according to claim 2, characterized in that: The height limiting mechanism (4) further comprises: a first insertion hole (42) and a second insertion hole (43), wherein the first insertion hole (42) is arranged on the sliding portion (22), a plurality of second insertion holes (43) are arranged at intervals on the bridge connecting member (32), and the limiting member (41) passes through the first insertion hole (42) and is inserted into the second insertion hole (43).

5. The height-adjustable cable tray according to claim 1, characterized in that: The cable reeling device (5) comprises: a cable box (51), a reeling mechanism and an elastic control mechanism. The cable box (51) is arranged on the bracket (3) and has a wire hole (511) thereon. The reeling mechanism is arranged in the cable box (51) and comprises: a rotating shaft (521) and a rotating disk (522). The rotating disk (522) is provided at the end of the rotating shaft (521). One end of the elastic control mechanism is connected to the edge of the rotating disk (522), and the other end is connected to the inner wall of the cable box (51).

6. The height-adjustable cable tray according to claim 5, characterized in that: The elastic control mechanism comprises: a flexible steel wire (531) and an elastic member (532), one end of the elastic member (532) is connected to the inner wall of the cable box (51), and the other end is connected to one end of the flexible steel wire (531), and the other end of the flexible steel wire (531) is connected to the edge of the turntable (522).

7. The height-adjustable cable tray according to claim 6, characterized in that: A partition is provided inside the cable box (51), and the rotating shaft (521) passes through the partition.

8. The height-adjustable cable tray according to claim 1, characterized in that: The cabling portion (21) is arched.

9. The height-adjustable cable tray according to any one of claims 1 to 8, characterized in that: The auxiliary operating part is used to drive the bridge frame (2) to rise and fall. The auxiliary operating part comprises a rod head (61), a rod body (62) and an operating head (63). One end of the rod body (62) is connected to the middle of the rod head (61). The operating heads (63) are respectively provided at both ends of the rod head (61). The operating head (63) has a groove.

10. The height-adjustable cable tray according to claim 9, characterized in that: The other end of the rod body (62) is provided with an insulating handle (64).

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