CN110113001A - Multi-stage drawing type photovoltaic panel wiring structure - Google Patents

Abstract

The invention discloses a multi-level pull-out photovoltaic panel wiring structure, which includes a container, at least two-level frames, a pulley assembly and photovoltaic cables. The upper rear side of each level of the frame is provided with photovoltaic panel end inserts. The photovoltaic cables drawn from the photovoltaic mounting plate frame of the first-level frame pass through the photovoltaic panel end plug-ins on the corresponding frame, and pass through the sliding wire assemblies of each level in turn. combiner box. For the vehicle-mounted mobile photovoltaic application of the present invention, when the mechanism is pulled out and the photovoltaic panel is unfolded, the power can be directly generated without rear wiring; when the mechanism is withdrawn and the photovoltaic panel is folded, the stitching does not need to be removed. It saves time and efficiency, eliminates the hidden danger that the positive and negative poles of each channel are easily matched incorrectly during the on-site wiring, and avoids the hidden danger of electric shock caused by live plugging and unplugging the photovoltaic aerial plug, which is convenient, efficient and safe to operate.

Description

A multi-level pull-out photovoltaic panel wiring structure

technical field

The invention relates to the field of photovoltaic technology, in particular to a multi-level pull-out photovoltaic panel wiring structure.

Background technique

With the increasing attention to clean energy, the simple fixed photovoltaic application is not flexible enough and cannot be fully adapted in many occasions. Therefore, people have developed different application forms for different occasions. For example, the floating power station on the water, the combination of fish ponds and power generation; the double-sided component design of the highway sound insulation screen, the combination of sound insulation and power generation, etc.

In the invention patent with the patent number CN109120226A and the name is a photovoltaic panel wiring structure, the applicant proposes a method of arranging the frames at all levels in the longitudinal direction, and the photovoltaic cables on the frames at all levels are routed along the edge of the frame, which is convenient for sorting. , the photovoltaic panel routing structure that avoids the cables swaying in the air, but the photovoltaic cables arranged along the frame cannot be unfolded or retracted with the pulling of the frame, which causes the photovoltaic cables inside the frame to be easily entangled during the pulling of the frame. It needs technicians to sort out and rewire on site. Due to the high power generation voltage, it is easy to generate electric shock during the wiring process, and the safety factor is low. Therefore, how to design a photovoltaic panel routing structure that does not require sorting and rewiring and has a high safety factor It is a technical problem that needs to be solved at present.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: in order to solve the technical problem that the wiring structure of the photovoltaic panel in the prior art requires post-operation on the photovoltaic cable and is prone to electric shock, the present invention provides a multi-stage pull-out photovoltaic Board trace structure to solve the above problems.

The technical solution adopted by the present invention to solve the technical problem is as follows: a multi-level draw-out photovoltaic panel wiring structure, including a container, the front of which is open; The front of the container is drawn out or received; the lower frame is suitable for being drawn out or received from the front of the upper frame; each frame is provided with a photovoltaic mounting plate frame.

Pulley assembly, each level of frame corresponds to a pulley assembly, wherein the first-level pulley assembly includes the first-level pulley line first car, one or more first-level pulleys, which are sequentially arranged on the top plate of the container and connected by wire ropes. Line intermediate car, first-level sliding line tail car; the first-level sliding line tail car is fixed with the container, the first-level sliding line intermediate car and the first-level sliding line first car slide in the front-rear direction; the first-level sliding line car The head car of the line is fixedly connected with the tail of the first-stage frame; the structure of the pulley assembly of each stage is the same.

Photovoltaic cables, each level of frame corresponds to a set of photovoltaic cables, the upper and rear sides of each level of frame are provided with photovoltaic panel end inserts, and the photovoltaic cables drawn from the photovoltaic mounting plate frame of each level of frame pass through the corresponding frame. The end plug-ins of photovoltaic panels pass through the sliding wire assemblies at all levels in turn, and then pass through the first-level sliding wire tail car and connect to the combiner box.

Since the photovoltaic cables pass through the sliding wire assemblies at all levels, when the frame is pulled, the photovoltaic cables can move together with the first sliding wire car, the middle sliding wire car and the sliding wire tail car, so as to realize the automatic deployment and operation of the photovoltaic cables. When folded, there will be no entanglement of photovoltaic cables, so there is no need to rewire after unfolding, there will be no click phenomenon, and the safety factor is higher.

Preferably, the frame is provided with two levels, respectively a primary frame and a secondary frame, wherein the primary frame is adapted to be drawn out or received from the front of the container; the secondary frame is adapted to be extracted or received from the front of the primary frame.

Further, a sliding wire link is arranged above the rear of each stage of the frame, and the sliding wire connecting rod passes through the sliding wire link hole on the upper sliding wire lead car to make the frame and the upper sliding wire lead car fixedly connected.

Further, each level frame is provided with two photovoltaic panel end inserts, and the positive photovoltaic cable and the negative photovoltaic cable drawn from the photovoltaic mounting plate frame of each level frame respectively pass through the two photovoltaic panels on the corresponding frame. Board side plug-in.

Preferably, the photovoltaic mounting panel frame includes a left photovoltaic panel frame assembly and a right photovoltaic panel frame assembly located on both sides of the frame, and the left photovoltaic panel frame assembly and the right photovoltaic panel frame assembly are respectively composed of one or more photovoltaic panel frame units The adjacent photovoltaic panel frame units are connected by hinges, and the cables on each of the photovoltaic panel frame units are connected in series and then lead out the positive photovoltaic cable and the negative photovoltaic cable to the photovoltaic panel end plug-in.

Preferably, the left photovoltaic panel frame assembly includes a lower left photovoltaic panel frame unit and an upper left photovoltaic panel frame unit hinged up and down; the right photovoltaic panel frame assembly includes a lower right photovoltaic panel frame unit and an upper right photovoltaic panel frame unit hinged up and down.

Further, the upper part of the side of the lower left photovoltaic panel frame unit is provided with a lower left wire hole; the lower part of the side of the upper left photovoltaic panel frame unit is provided with an upper left wire hole 1, and the upper part is provided with a second upper left wire hole; The upper part of the side of the lower photovoltaic panel frame unit is provided with a lower right thread hole; the lower part of the side of the upper right photovoltaic panel frame unit is provided with a right upper thread hole 1, the upper part is provided with a right upper thread hole 2, and the left lower photovoltaic panel frame unit is provided with a lower right thread hole. The cables pass through the lower left cable hole and the upper left cable hole 1 in series with the cables on the upper left photovoltaic panel frame unit. The cables on the upper left photovoltaic panel frame unit pass through the upper left cable hole 2, the upper right cable hole 2 and the upper right. The cables in the photovoltaic panel frame unit are connected in series; the cables on the upper right photovoltaic panel frame unit are connected in series with the cables on the right lower photovoltaic panel frame unit through the upper right cable hole 1 and the right lower cable hole in turn.

Preferably, the sliding wire connecting rod and the sliding wire connecting rod hole which are connected to each other are in clearance fit to prevent jamming during movement.

Further, the sliding wire assembly is fixed on the container or the top plate of the frame through several sliding wire brackets.

Preferably, when the frame is withdrawn, a gap is left between the trolley tail car in each stage of the trolley line assembly and the middle trolley car close to the trolley line tail car to prevent interference during retraction.

The beneficial effects of the present invention are:

(1) For the multi-level pull-out photovoltaic panel wiring structure of the present invention, for vehicle-mounted mobile photovoltaic applications, after the mechanism is pulled out and the photovoltaic panel is unfolded, electricity can be generated directly without post-wiring; when the mechanism is withdrawn There is no need to remove the stitches before folding and folding the photovoltaic panel. It saves time and efficiency, eliminates the hidden danger that the positive and negative poles of each channel are easily matched incorrectly when wiring on-site, avoids the hidden danger of electric shock caused by live plugging and unplugging photovoltaic aerial plugs, and is convenient, efficient and safe to operate.

(2) In the present invention, the frames at all levels are arranged in a longitudinal sequence, and the photovoltaic cables corresponding to each level of the frame pass through the photovoltaic panel end inserts on the corresponding frame, and pass through the sliding wire assemblies of all levels backward in sequence, and then all the cables are connected from one end to the other. The tail car of the grade sliding wire is passed out and connected to the combiner box. The cables are connected in an orderly manner, and the photovoltaic cables on the frames at all levels will not interfere.

(3) In the present invention, the tail of each stage of the frame is fixedly connected with the first carriage of the sliding wire of the upper frame, and the first carriage of the sliding wire, the intermediate carriage of the sliding wire and the tail carriage of the sliding wire in each stage of the sliding wire assembly are connected by wire ropes , so that when the frame is pulled out or retracted, the first trolley, the middle trolley and the rear trolley move in an orderly manner, so as to ensure that the photovoltaic cables are neatly stored.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a front view of the frame at all levels of the present invention in a drawn-out state (only the top area is shown);

Fig. 2 is the enlarged view of A place in Fig. 1;

Fig. 3 is an enlarged view at B in Fig. 1;

4 is a top view of the frame at all levels in the present invention in an extracted state (only the area on one side of the axis of symmetry is shown);

Fig. 5 is an enlarged view at C in Fig. 4;

Fig. 6 is the enlarged view of D place in Fig. 4;

Fig. 7 is the front view of the frame in the withdrawn state of the present invention (only the top area is shown);

Fig. 8 is an enlarged view at E in Fig. 7;

Fig. 9 is the top view of the frame in the withdrawn state of the present invention at all levels (only the area on one side of the axis of symmetry is shown);

Figure 10 is an enlarged view at F in Figure 9;

FIG. 11 is a front view of the photovoltaic mounting plate frame in the unfolded state of the present invention;

Fig. 12 is a schematic diagram of the wiring of photovoltaic cables on the primary frame described in the present invention;

FIG. 13 is a schematic diagram of the routing of photovoltaic cables on the secondary frame according to the present invention.

In the figure, 1. Container, 2. First-class sliding line assembly, 2-1, first-class sliding line tail car, 2-2, first-class sliding line middle car, 2-3, first-class sliding line first car, 2 -3-1, Level 1 slide wire connecting rod hole, 3, Level 2 slide line assembly, 3-1, Level 2 slide line tail car, 3-2, Level 2 slide line intermediate car, 3-3, Level 2 Sliding wire first car, 3-3-1, secondary sliding wire connecting rod hole, 4, primary frame, 5, photovoltaic panel end insert, 6, secondary frame, 7, lower left photovoltaic panel frame unit, 7-1, Bottom left cable hole, 8, upper left photovoltaic panel frame unit, 8-1, upper left cable hole one, 8-2, upper left cable hole two, 9, upper right photovoltaic panel frame unit, 9-1, upper right cable hole one , 9-2, upper right wire hole 2, 10, lower right photovoltaic panel frame unit, 10-1, lower right wire hole, 11, first-level sliding wire bracket, 12, first-level sliding wire connecting rod, 13, two 1st grade sliding wire bracket, 14, 2nd grade sliding wire connecting rod, 15, photovoltaic cable, 16, steel wire rope.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to 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, only used to explain the present invention, and should not be construed as a limitation of the present invention.

The present invention can adopt the pull-out structure of different frame stages according to the needs of the application. Since the frames at all levels are nested with each other, the more stages, the smaller the size of the frame, so the number of frame stages should not be too many. for the best. To avoid repetition, the following embodiments take a two-level framework as an example.

As shown in Fig. 1-Fig. 10, a multi-level pull-out photovoltaic panel wiring structure includes a container 1 with an opening in front of the container 1; two-level frames, respectively a primary frame 4 and a secondary frame 6, one The primary frame 4 is suitable for being drawn out or received from the front of the container 1 ; the secondary frame 6 is suitable for being drawn out or received from the front of the primary frame 4 .

Pulley assembly, each level of frame corresponds to a pulley assembly, wherein the first-level pulley assembly includes the first-level pulley line first car 2-3, the first-level pulley line arranged on the top plate of the container 1 in sequence from front to back and connected by the wire rope 16, the first-level pulley assembly A pair of sliding line middle car 2-2, first-level sliding line tail car 2-1, and a pair of first-level pulley assemblies are symmetrically arranged. In Figure 4, only the first-level pulley assembly structure on one side of the symmetry axis is drawn; The line tail car 2-1 is fixed with the container 1, the first-level sliding line intermediate car 2-2 and the first-level sliding line first car 2-3 slide in the front and rear directions; the first-level sliding line first car 2-3 and the first-level frame 4 are connected Tail fixed connection. The secondary trolley assembly includes the first secondary trolley 3-3, the secondary trolley 3-2, the secondary trolley and the secondary trolley, which are sequentially arranged on the top plate of the primary frame 4 from front to back and are connected by wire ropes 16. The tail car 3-1; the secondary pulley assembly is symmetrically provided with a pair, the second pulley tail car 3-1 is fixed with the first stage frame 4, the second pulley middle car 3-2 and the second pulley first car 3- 3Swipe in the front and rear directions.

Photovoltaic cables 15, each level of frame corresponds to a group of photovoltaic cables 15, the upper rear side of each level of the frame is provided with photovoltaic panel end plug-ins 5, photovoltaic cables 15 are flexible cables, when the photovoltaic cables 15 are arranged, as shown in Figure 12 As shown in FIG. 13 , the photovoltaic cables 15 drawn from the photovoltaic mounting plate frame of the secondary frame 6 are aggregated to the photovoltaic panel end inserts 5 on the secondary frame 6 , and two photovoltaic panel end inserts 5 are installed on the secondary frame 6 . The upper rear side of the cable is symmetrical with the center plane of the secondary frame 6, and then this part of the cable is fixed in sequence on the first trolley 3-3 of the secondary trolley, the middle trolley 3-2 of the secondary trolley, and the tail of the secondary trolley. The car 3-1, because the second-level sliding line tail car 3-1 and the first-level sliding line first car 2-3 are relatively stationary, and are not affected by the frame pulling and retracting movements. The above-mentioned cables are then laid from the secondary trolley 3-1 to the primary trolley 2-3, and then fixed to the primary trolley 2-2 and the primary trolley 2- 1. The photovoltaic cables 15 on the primary frame 4 are aggregated to the photovoltaic panel end inserts 5 on the primary frame 4; Symmetrical, and then this part of the cable is then fixed on the first-level sliding line first car 2-3, the first-level sliding line middle car 2-2, and the first-level sliding line tail car 2-1. Finally, all the photovoltaic cables 15 on the primary frame 4 and the secondary frame 6 start from the primary trolley 2-1 and connect to the combiner box.

The length of the wire ropes 16 in each stage of the frame is slightly shorter than the length of the photovoltaic cable. When the first-level frame 4 is pulled out from the container 1, the first-level frame 4 slides forward together with the first-level sliding line first car 2-3. When the first-level sliding line first car 2-3 slides to a certain distance, the first-class The wire rope 16 between the first trolley 2-3 and the first-level trolley 2-2 is tightened, and then the first-level trolley 2-2 is pulled to slide forward, and the cable between the two is unfolded at the same time; After the first-level sliding line intermediate car 2-2 slides to a certain distance, the wire rope 16 between the first-level sliding line intermediate car 2-2 and the first-level sliding line tail car 2-1 is gradually tightened, and the cable between the two is gradually tightened. Expand. When the first-level frame 4 is retracted into the container 1, the first-level trolley 2-3 slides back first, and the cables between the two are gradually closed; when the first-level trolley 2-3 slides to and When the sliding line intermediate car 2-2 is in contact, then the primary sliding line intermediate car 2-2 slides back, and at the same time, the cable between the two is gradually retracted; until the primary frame 4 is completely retracted.

When the secondary frame 6 is pulled out from the primary frame 4, the secondary frame 6 slides forward together with the first carriage 3-3 of the secondary sliding wire. When the first carriage 3-3 of the secondary sliding wire slides to a certain distance, The steel wire rope 16 between the first trolley 3-3 of the secondary sliding line and the intermediate trolley 3-2 of the secondary sliding line is tightened, and then the middle trolley 3-2 of the secondary sliding line is pulled to slide forward, and the cable between the two is realized at the same time. ; When the secondary trolley 3-2 slides to a certain distance, the wire rope 16 between the secondary trolley 3-2 and the secondary trolley 3-1 is gradually tightened, and the cables between the two are gradually tightened. gradually expanded. When the secondary frame 6 is retracted into the primary frame 4, the first carriage 3-3 of the secondary sliding wire slides back first, and the cables between the two are gradually closed; When the secondary trolley 3-2 is in contact, the secondary trolley 3-2 slides back, and the cable between the two is gradually closed until the secondary frame 6 is completely retracted.

In a specific embodiment of the present invention, a sliding wire link is provided above the rear of each stage of the frame, and the sliding wire connecting rod passes through the sliding wire link hole on the upper sliding wire lead car to fix the frame and the upper sliding wire lead car connect. When the number of frame series is two, as shown in Figure 2 and Figure 5, there is a first-level sliding link hole 2-3-1 on the first-level sliding wire car 2-3, and the first-level sliding link link 12 is fixed on the first-level frame 4 and passes through the first-level sliding wire connecting rod hole 2-3-1, so that the first-level sliding wire car 2-3 is fixed with the first-level frame 4. When the first-level frame 4 is removed from the container 1 When pulled out, the first-level sliding line connecting rod 12 slides forward together with the first-level sliding line first car 2-3; as shown in Figure 3 and Figure 6, there is one second sliding line first car 3-3 The secondary sliding wire connecting rod hole 3-3-1, the secondary sliding wire connecting rod 14 is fixed on the secondary frame 6, and passes through the secondary sliding wire connecting rod hole 3-3-1, so that the secondary sliding wire is the first car 3-3 is fixed with the secondary frame 6. When the secondary frame 6 is pulled out from the primary frame 4, the secondary sliding wire link 14 slides forward together with the secondary sliding wire first carriage 3-3.

In a specific embodiment of the present invention, as shown in FIG. 11 , the photovoltaic mounting panel frame includes a left photovoltaic panel frame assembly and a right photovoltaic panel frame assembly located on both sides of the frame, the left photovoltaic panel frame assembly and the right photovoltaic panel The frame components are respectively composed of one or more photovoltaic panel frame units. The adjacent photovoltaic panel frame units are connected by hinges, which is convenient for storage after being rotated and folded. Cables and negative photovoltaic cables to the photovoltaic panel end inserts 5 .

The specific series structure may be but not limited to the following structure, the left photovoltaic panel frame assembly includes a lower left photovoltaic panel frame unit 7 and an upper left photovoltaic panel frame unit 8 hinged up and down; the right photovoltaic panel frame assembly includes an upper and lower right photovoltaic panel frame unit hinged up and down Panel frame unit 10 and upper right photovoltaic panel frame unit 9. The upper left side of the photovoltaic panel frame unit 7 is provided with a left lower wire hole 7-1; the lower side of the left upper photovoltaic panel frame unit 8 is provided with a left upper wire hole 1 8-1, and the upper part is provided with a left upper wire hole 2 8-2 The upper right side of the photovoltaic panel frame unit 10 is provided with a lower right wire hole 10-1; the lower side of the right upper photovoltaic panel frame unit 9 is provided with a right upper wire hole 1 9-1, and the upper part is provided with a right upper wire hole 2 9-2, the photovoltaic cable 15 on the lower left photovoltaic panel frame unit 7 is connected in series with the photovoltaic cable 15 on the upper left photovoltaic panel frame unit 8 through the lower left wire hole 7-1 and the upper left wire hole 8-1 in sequence, and the upper left The photovoltaic cable 15 on the photovoltaic panel frame unit 8 is connected in series with the photovoltaic cable 15 in the upper right photovoltaic panel frame unit 9 through the upper left wire hole 2 8-2 and the upper right wire hole 2 9-2 in sequence; the upper right photovoltaic panel frame unit The photovoltaic cables 15 on the 9 are connected in series with the photovoltaic cables 15 on the lower right photovoltaic panel frame unit 10 through the upper right wire hole 1 9-1 and the lower right wire hole 10-1 in sequence, and then lead out from the primary frame 4 A pair of positive and negative photovoltaic cables are connected to the photovoltaic panel end plug-in 5 on the primary frame 4; a pair of positive and negative photovoltaic cables are drawn from the secondary frame 6 and connected to the photovoltaic panel end plug-in 5 on the secondary frame 6 .

In a specific embodiment of the present invention, the sliding wire assembly is fixed to the container 1 or the top plate of the frame through several sliding wire brackets. When the number of frame stages is two, the first-level sliding wire bracket 11 is fixed to the top plate of the container 1, and the first-level sliding-line first car 2-3 and the first-level sliding-line intermediate car 2-2 are slidably connected to the first-level sliding-line bracket 11 , the first-level sliding line tail car 2-1 is fixedly connected with the first-level frame 4; the second-level sliding line bracket 13 is fixed with the top plate of the first-level frame 4, the second-level sliding line first car 3-3, the second-level sliding line middle car 3 -2 is slidably connected to the secondary sliding wire bracket 13 , and the secondary sliding wire tail car 3-1 is fixedly connected to the secondary sliding wire bracket 13 .

The first trolley, the middle trolley and the tail trolley in the present invention are all trolley guides, and the trolley guides are in the prior art and can be purchased in the market.

Preferably, the interconnected sliding wire link and the sliding wire link hole are in clearance fit to prevent jamming during movement.

Preferably, when the frame is withdrawn, a gap is left between the trolley tail car in each stage of the trolley line assembly and the trolley line intermediate car close to the trolley line tail car to prevent interference during retraction.

In the present invention, a limit block can be arranged at the front end of the first carriage of the sliding wire of each stage to prevent the first carriage of the sliding wire from derailing when the frame is pulled out.

Taking the two-level frame as an example, when the capacity of the photovoltaic panel increases, the lengths of the primary frame 4 and the secondary frame 6 can be increased. At this time, the lengths of the primary sliding wire assembly 2 and the secondary sliding wire assembly 3 can also be increased. That's it. At the same time, the number of first-level sliding line intermediate cars 2-2 and second-level sliding line intermediate cars 3-2 can also be increased.

In the present invention, the photovoltaic cable is transported in the form of a sliding wire guide. Those skilled in the art should understand that any structure that is similar to the sliding wire guide and can drive the movement of the photovoltaic cable, such as hanging a ring with a steel wire rope 16, etc. within the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on those shown in the accompanying drawings The orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance. In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; It is a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

In this specification, schematic representations of such terms do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in one or more embodiments.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (10)

1. A multi-level pull-out photovoltaic panel wiring structure, characterized in that, comprising: a container (1), the front of the container (1) is open; At least two-stage frames, wherein the first-stage frame (4) is suitable for being drawn out or received from the front of the container (1); the next-stage frame (4) is suitable for being drawn out or received from the front of the upper-stage frame; each level of the frame is provided with Photovoltaic mounting panel frame; A pulley assembly, each level of frame corresponds to a pulley assembly, wherein the first-level pulley assembly includes a first-level pulley line first cart (2) sequentially arranged on the top plate of the container (1) and connected by a wire rope (16) from front to back -3), one or more first-level trolley line intermediate vehicles (2-2), first-level trolley line tail car (2-1); the first-level trolley line tail car (2-1) and the container ( 1) Fixed, the first-level sliding line intermediate vehicle (2-2) and the first-level sliding line first vehicle (2-3) slide in the front-rear direction; the first-level sliding line first vehicle (2-3) and the first-level sliding line first vehicle (2-3) The tail of the frame (4) is fixedly connected; the structure of the pulley assembly of each stage is the same; Photovoltaic cables (15), each stage of the frame corresponds to a set of photovoltaic cables (15), the upper rear side of each stage of the frame is provided with photovoltaic panel end inserts (5), which are led out from the photovoltaic installation board frame of each stage of the frame. The photovoltaic cable (15) passes through the photovoltaic panel end inserts (5) on the corresponding frame, and passes through the sliding wire assemblies of all levels backward in sequence, and then goes out from the first-level sliding wire tail car (2-1), and is connected to into the combiner box. 2. The multi-level pull-out photovoltaic panel wiring structure according to claim 1, wherein the frame is provided with two levels, which are a primary frame (4) and a secondary frame (6), wherein The primary frame (4) is adapted to be drawn out or received from the front of the container (1); the secondary frame (6) is adapted to be drawn out or received from the front of the primary frame (4). 3. The multi-stage pull-out photovoltaic panel wiring structure according to claim 1, characterized in that: each stage of the frame is provided with a sliding wire link above the tail portion, and the sliding wire link passes through the upper sliding wire head The sliding wire connecting rod hole on the car makes the frame fixedly connected with the upper sliding wire first car. 4. The multi-level pull-out photovoltaic panel wiring structure according to claim 1, characterized in that: each level frame is provided with two photovoltaic panel end inserts (5), and the photovoltaic mounting board frame of each level frame is provided with two photovoltaic panel end inserts (5). The positive photovoltaic cable and the negative photovoltaic cable drawn out from the above respectively pass through the two photovoltaic panel end inserts (5) on the corresponding frame. 5 . The multi-level pull-out photovoltaic panel wiring structure according to claim 4 , wherein the photovoltaic installation panel frame comprises a left photovoltaic panel frame assembly and a right photovoltaic panel frame assembly located on both sides of the frame, and the The left photovoltaic panel frame assembly and the right photovoltaic panel frame assembly are respectively composed of one or more photovoltaic panel frame units, adjacent photovoltaic panel frame units are connected by hinges, and the photovoltaic cables (15) on each of the photovoltaic panel frame units are sequentially After being connected in series, the positive photovoltaic cable and the negative photovoltaic cable are led out to the photovoltaic panel end insert (5). 6. The multi-stage pull-out photovoltaic panel wiring structure according to claim 4, wherein the left photovoltaic panel frame assembly comprises a lower left photovoltaic panel frame unit (7) and an upper left photovoltaic panel frame unit (7) hinged up and down. 8); the right photovoltaic panel frame assembly includes a lower right photovoltaic panel frame unit (10) and an upper right photovoltaic panel frame unit (9) hinged up and down. 7. The multi-level pull-out photovoltaic panel wiring structure according to claim 6, characterized in that: the upper left side of the photovoltaic panel frame unit (7) is provided with a left lower cable hole (7-1); The upper left side photovoltaic panel frame unit (8) is provided with a left upper wire hole 1 (8-1), and the upper part is provided with a left upper wire hole 2 (8-2); the right lower photovoltaic panel frame unit (10) The upper right side of the photovoltaic panel frame unit (9) is provided with the upper right thread hole 1 (9-1), and the upper right side is provided with the upper right thread hole 2 (10-1). (9-2), the photovoltaic cables (15) on the lower left photovoltaic panel frame unit (7) pass through the lower left cable hole (7-1) and the upper left cable hole one (8-1) in turn and the upper left photovoltaic panel frame unit The photovoltaic cables (15) on (8) are connected in series, and the photovoltaic cables (15) on the upper left photovoltaic panel frame unit (8) pass through the upper left cable hole two (8-2) and the upper right cable hole two (9- 2) Connected in series with the photovoltaic cable (15) in the upper right photovoltaic panel frame unit (9); The lower right cable hole (10-1) is connected in series with the photovoltaic cable (15) on the lower right photovoltaic panel frame unit (10). 8 . The multi-stage pull-out photovoltaic panel wiring structure according to claim 3 , wherein the sliding wire connecting rod and the sliding wire connecting rod hole connected to each other are clearance fit. 9 . 9 . The multi-level drawable photovoltaic panel wiring structure according to claim 1 , wherein the sliding wire assembly is fixed to the container ( 1 ) or the top plate of the frame through a plurality of sliding wire brackets. 10 . 10. The multi-stage pull-out photovoltaic panel wiring structure according to claim 1, characterized in that: when the frame is withdrawn, the trolley tail car in each stage of the trolley assembly is connected to the trolley close to the trolley. There is a gap between the sliding line and the middle car of the line tail car.