CN215377426U

CN215377426U - Mounting structure for photovoltaic large-volume back plate

Info

Publication number: CN215377426U
Application number: CN202121859279.0U
Authority: CN
Inventors: 曾飞亮; 李小军; 尹海斌; 吴建文; 李岩
Original assignee: Tongwei Solar Hefei Co Ltd
Current assignee: Tongwei Solar Hefei Co Ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-12-31
Anticipated expiration: 2031-08-10

Abstract

The utility model provides a mounting structure for a photovoltaic large roll back plate, which belongs to the technical field of production and manufacture of crystalline silicon solar modules and comprises the following components: the outer side of the inflatable shaft is sleeved with a back plate paper roll; the clamping block tool is arranged between the air expansion shaft and the back plate paper roll; and the back plate is wound on the back plate paper roll. The utility model provides an installation structure for a photovoltaic large-roll back plate, which is characterized in that a clamping block tool is additionally arranged between an air expansion shaft and a back plate paper roll, so that the back plate of the large roll can be stably placed on the original small air expansion shaft, the clamping block tool is simple in structure and convenient to use, the number of times of replacing the back plate roll is effectively reduced, and the production efficiency is improved.

Description

Mounting structure for photovoltaic large-volume back plate

Technical Field

The utility model relates to the technical field of production and manufacturing of crystalline silicon solar modules, in particular to a mounting structure for a photovoltaic large-volume back plate.

Background

The back surface of the solar cell is covered with a fluoroplastic film, which is called a solar photovoltaic back plate for short, and has a reflection effect on sunlight, so that the efficiency of the module is slightly improved, and the working temperature of the module can be reduced due to higher infrared emissivity, and the efficiency of the module can be improved. Of course, the fluoroplastic film firstly has the basic requirements of aging resistance, corrosion resistance, air impermeability and the like required by the solar cell packaging material. With the continuous improvement of the automation level of a photovoltaic module factory, the time waste is saved by reducing the material replacement, the maximization of the improved capacity is the inevitable choice of the module factory, the conventional backboard used conventionally is 200 m/roll, the replacement is carried out every 100 modules in basic production according to 2 meters of a single module, the replacement is carried out almost every hour in a workshop with high capacity, and the production time is greatly wasted.

In the prior art, the polyester film winding device for the photovoltaic module back plate with the application number of '201920085214.1' comprises a base, wherein one end of the top of the base is fixed with a vertical plate, a speed reducing motor is fixed on one side wall of the vertical plate, an inflatable roller is rotatably connected to one side wall of the vertical plate through a bearing, one end of the inflatable roller penetrates through one side wall of the vertical plate and is fixedly connected with an output shaft of the speed reducing motor, the polyester film winding device for the photovoltaic module back plate can drive a placing box to move left and right through the arrangement of a servo motor, a one-way threaded rod and a connecting block, the vertical movement of the placing box can be realized through the arrangement of a hydraulic cylinder, the contraction or release of a clamping block can be realized through the arrangement of a stepping motor, a two-way threaded rod and a connecting plate, so that the polyester film after winding is taken down from the air roller, and through the arrangement of a spring and the placing plate, when the polyester film after being rolled is put into the containing box, the polyester film can also play a certain buffering role, so that the polyester film can be prevented from being damaged.

However, the method still has the obvious defects in the using process: the physiosis roller among the above-mentioned device can only adapt to the backplate of single roll number, but the backplate of little roll number needs frequent change when using, efficiency is lower, if the backplate of the big roll number of direct mount, then there is great clearance between the paper reel of backplate and the physiosis roller, the inflation range of physiosis roller is comparatively limited again, make the backplate of big roll number be difficult to by stable erection, in addition, if direct change is large-scale physiosis roller, not only can increase the cost, increase the occupation of land space of equipment, and large-scale physiosis roller is bulky usually, heavy, the staff takes inconveniently, easily produce the incident.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mounting structure for a photovoltaic large-volume back plate, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a mounting structure for a photovoltaic large roll back sheet, comprising:

the outer side of the inflatable shaft is sleeved with a back plate paper roll;

the clamping block tool is arranged between the air expansion shaft and the back plate paper roll; and

the backboard is wound on the backboard paper roll.

Preferably, the clamp splice frock includes the arc, one side integrated into one piece of arc is provided with spacing bulge loop, set up the first ventilation groove of indent on the arc.

Preferably, both ends of the inflatable shaft are provided with rotating bearings.

Preferably, first ventilation groove is seted up in the centre of arc, the fixed ring bearing that is provided with in bottom of first ventilation groove, the articulated rotary rod that is provided with in the ring bearing, the rotary rod runs through and articulates the setting in the arc, the fixed runner that is provided with of one end that the rotary rod is located first ventilation groove, the rotary rod is kept away from the fixed lead screw that is provided with of one end of runner, the activity is provided with the nut on the lead screw, the fixed push rod that is provided with on the nut, the fixed interior splint that is provided with of one end that the rotary rod was kept away from to the push rod, the fixed block that is provided with of one end that blocks the rotary rod was kept away from to the lead screw.

Preferably, the surface of the rotating wheel is provided with a locking groove.

Preferably, a clamping groove is formed in one side, far away from the arc-shaped plate, of the inner clamping plate.

Preferably, an adjusting groove is formed in the limiting protruding ring, an adjusting rod is movably arranged in the adjusting groove and fixed at the bottom of the limiting arc-shaped rod, and the distance between the limiting arc-shaped rod and the limiting protruding ring can be adjusted through an adjusting mechanism.

Preferably, adjustment mechanism includes the cylinder, the one end of cylinder is fixed to be set up under on the fixed block, the fixed one side that is close to spacing arc pole at spacing bulge loop of setting down, the cylinder is kept away from the fixed block that is provided with of output of fixed block down, go up the fixed one side that sets up at spacing arc pole near spacing bulge loop of fixed block.

Preferably, the adjusting mechanism comprises a first fixing plate and a second fixing plate, the first fixing plate is fixedly arranged on one side, close to the limiting protruding ring, of the limiting arc-shaped rod, the second fixing plate is fixedly arranged on one side, close to the limiting arc-shaped rod, of the limiting protruding ring, a plurality of thread grooves are formed in the first fixing plate, and fixing screws penetrate through thread through holes formed in the thread grooves and the second fixing plate.

Preferably, the adjusting mechanism comprises a concave thread groove, the concave thread groove is fixedly arranged on one side, close to the limiting convex ring, of the limiting arc-shaped rod, an adjusting screw is arranged in the concave thread groove in a threaded manner, one end, far away from the concave thread groove, of the adjusting screw is hinged in a bearing seat, and the bearing seat is fixedly arranged on one side, close to the limiting arc-shaped rod, of the limiting convex ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. the clamping block tool is additionally arranged between the air expansion shaft and the back plate paper roll, so that the back plate of the large roll can also be stably fixed on the air expansion shaft, the problems of small expansion and contraction quantity of the air expansion shaft and large gap between the large roll and the air expansion shaft are solved, the problems of cost increase caused by directly replacing the large air expansion shaft and inconvenience in taking by staff and safety accidents are avoided, and the back plate of the large roll can be simply and quickly installed;

2. the operation of staff is facilitated, the potential safety operation hazard is avoided, the replacement times of the back plate paper winding drum are effectively reduced, the large winding drum is more durable, the replacement time is reduced, and the production efficiency is greatly improved;

3. the clamp splice frock is the modularized design, can change spare part alone, and the frock maintenance cost is low, is convenient for use widely in batches greatly.

The utility model provides an installation structure for a photovoltaic large-roll back plate, which is characterized in that a clamping block tool is additionally arranged between an air expansion shaft and a back plate paper roll, so that the back plate of the large roll can be stably placed on the original small air expansion shaft, the clamping block tool is simple in structure and convenient to use, the number of times of replacing the back plate roll is effectively reduced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of a conventional small roll back mounted on an air shaft;

FIG. 2 is a schematic view of a large roll of backing sheet mounted on an air shaft;

FIG. 3 is a schematic diagram of the overall structure of the present invention in one embodiment;

fig. 4 is a schematic perspective view of the clamp block tool in an assembled state according to the first embodiment of the utility model;

fig. 5 is a schematic structural view of the assembled clamping block fixture in the second embodiment of the present invention;

FIG. 6 is a schematic sectional side view of a block fixture in an assembled state according to a second embodiment of the present invention;

fig. 7 is a schematic structural view of the assembled clamp block tool in the third embodiment of the present invention;

FIG. 8 is a schematic side view in cross section of a single clamp block tooling in accordance with a fourth embodiment of the present invention;

FIG. 9 is a schematic side view in cross section of a single clamp block tooling in accordance with a fifth embodiment of the present invention;

fig. 10 is a schematic side sectional view of a single clamp block tooling in accordance with a sixth embodiment of the present invention.

In the figure: the pneumatic expansion shaft, the clamping block tool, the arc plate 201, the limiting convex ring 202, the 2021 adjusting groove, the first ventilating groove 203, the paper winding drum 3, the back plate 4, the rotating bearing 5, the circular bearing 6, the rotating rod 7, the rotating wheel 8, the locking groove 801, the screw rod 9, the nut 10, the push rod 11, the inner clamping plate 12, the clamping groove 121, the blocking block 13, the adjusting rod 14, the limiting arc rod 15, the cylinder 16, the lower fixing block 17, the upper fixing block 18, the first fixing plate 19, the second fixing plate 20, the thread groove 21, the fixing screw 22, the concave thread groove 23, the adjusting screw 24 and the bearing seat 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 10, the present invention provides a technical solution:

a mounting structure for a photovoltaic large roll back sheet, comprising:

the outer side of the inflatable shaft 1 is sleeved with a back plate paper roll 3;

the clamping block tool 2 is arranged between the air expansion shaft 1 and the back plate paper roll 3, so that a gap between the air expansion shaft 1 and the back plate paper roll 3 can be filled, and the back plate paper roll 3 is stably installed; and

the backboard 4 is rolled on the backboard paper roll 3.

Preferably, the clamping block tool 2 comprises an arc plate 201, a limiting protruding ring 202 is integrally formed on one side of the arc plate 201, the limiting protruding ring 202 is used for limiting the two ends of the back plate paper roll 3, the back plate paper roll 3 is prevented from sliding in use, and an inwards concave first ventilation groove 203 is formed in the arc plate 201, so that air circulation is facilitated.

Preferably, both ends of the inflatable shaft 1 are provided with the rolling bearings 5, and the inflatable shaft 1 can smoothly rotate due to the arrangement of the rolling bearings 5, so that the use is more convenient.

Preferably, the first ventilation slot 203 is arranged in the middle of the arc-shaped plate 201, a circular ring bearing 6 is fixedly arranged at the bottom of the first ventilation slot 203, a rotating rod 7 is hinged in the circular ring bearing 6, the rotating rod 7 is arranged in the arc-shaped plate 201 in a penetrating and hinged manner, so that the rotating rod 7 can rotate in situ, a rotating wheel 8 is fixedly arranged at one end of the rotating rod 7, which is positioned in the first ventilation slot 203, when in use, the rotating rod 7 can be driven to rotate by the rotating wheel 8, a lead screw 9 is fixedly arranged at one end of the rotating rod 7, which is far away from the rotating wheel 8, a nut 10 is movably arranged on the lead screw 9, when the lead screw 9 rotates, the nut 10 can move along the lead screw 9, a push rod 11 is fixedly arranged on the nut 10, an inner clamping plate 12 is fixedly arranged at one end of the push rod 11, which is far away from the rotating rod 7, the distance between the inner clamping plate 12 and the arc-shaped plate 201 is adjustable, so that the clamping block tooling 2 can adapt to paper rolls 3 for backboard with different diameters, the adjusting operation is simple, the universality is stronger, the stop block 13 is fixedly arranged at one end, away from the rotating rod 7, of the screw rod 9, and the stop block 13 can be arranged to prevent the nut 10 from being separated from the screw rod 9 when moving.

Preferably, the surface of the rotating wheel 8 is provided with a locking groove 801, and if it is inconvenient for a worker to directly rotate the rotating wheel 8 by hand because the locking groove 801 is small during use, the tool can be engaged in the locking groove 801 on the surface of the rotating wheel 8 by means of a tool with raised patterns, such as a screwdriver, to drive the rotating wheel 8 to rotate, so as to facilitate use.

As a preferred, draw-in groove 121 has been seted up to one side that interior splint 12 kept away from arc 201, and this draw-in groove 121 set up mainly be to the physiosis axle 1 that the surface was provided with the keybar, can aim at the keybar of physiosis axle 1 with draw-in groove 121 during the use, and then make interior splint 12's position more stable, difficult the sliding.

Preferably, the limiting protrusion ring 202 is provided with an adjusting groove 2021, the adjusting rod 14 is movably disposed in the adjusting groove 2021, the adjusting rod 14 can move up and down along the adjusting groove 2021, the adjusting rod 14 is fixed at the bottom of the limiting arc rod 15, the distance between the limiting arc rod 15 and the limiting protrusion ring 202 can be adjusted through the adjusting mechanism, if the diameter of the back plate paper roll 3 or the back plate 4 is large, the limiting arc rod 15 can be moved up moderately, and then the back plate paper roll 3 and the back plate 4 are stably limited from two ends, so that the back plate paper roll 3 and the back plate 4 are prevented from shaking and sliding in the using process.

Preferably, the adjusting mechanism comprises an air cylinder 16, one end of the air cylinder 16 is fixedly arranged on a lower fixing block 17, the lower fixing block 17 is fixedly arranged on one side, close to the limiting arc-shaped rod 15, of the limiting protruding ring 202, an output end, far away from the lower fixing block 17, of the air cylinder 16 is fixedly provided with an upper fixing block 18, the upper fixing block 18 is fixedly arranged on one side, close to the limiting protruding ring 202, of the limiting arc-shaped rod 15, when the adjusting mechanism is used, if the height position of the limiting arc-shaped rod 15 needs to be adjusted, the air cylinder 16 can be started, and the air cylinder 16 extends or contracts to drive the limiting arc-shaped rod 15 to change in position.

Preferably, the adjusting mechanism comprises a first fixing plate 19 and a second fixing plate 20, the first fixing plate 19 is fixedly arranged on one side of the limiting arc-shaped rod 15 close to the limiting convex ring 202, the second fixing plate 20 is fixedly arranged on one side of the limiting convex ring 202 close to the limiting arc-shaped rod 15, a plurality of thread grooves 21 are formed in the first fixing plate 19, adjacent thread grooves 21 can be formed at equal intervals or non-equal intervals, can be flexibly arranged according to the actual working condition, a fixing screw 22 is arranged in a threaded through hole formed on any one of the threaded groove 21 and the second fixing plate 20 in a penetrating way, if the height position of the limiting arc-shaped rod 15 needs to be adjusted, the fixing screw 22 can be taken off by rotation, the limiting arc-shaped rod 15 is lifted and lifted to a proper position, the fixing screw 22 is screwed into the aligned screw groove 21 and the screw through hole formed in the second fixing plate 20, and the height of the adjusted limiting arc-shaped rod 15 can be kept stable.

Preferably, the adjusting mechanism comprises a concave thread groove 23, the concave thread groove 23 is fixedly arranged on one side of the limiting arc-shaped rod 15 close to the limiting convex ring 202, an adjusting screw 24 is arranged in the concave thread groove 23 in a threaded manner, one end of the adjusting screw 24 far away from the concave thread groove 23 is hinged in a bearing seat 25, the bearing seat 25 is fixedly arranged on one side of the limiting convex ring 202 close to the limiting arc-shaped rod 15, if the height position of the limiting arc-shaped rod 15 needs to be adjusted, the length of the adjusting screw 24 in the concave thread groove 23 can be changed in a rotating manner, the overall height of the concave thread groove 23, the adjusting screw 24 and the bearing seat 25 is further changed, and the height of the limiting arc-shaped rod 15 relative to the limiting convex ring 202 is also changed.

The first embodiment is as follows:

the currently used conventional backboard is mainly 200 m/roll, calculated according to 2 meters of a single assembly, basically every 100 assemblies are required to be replaced in production, almost every hour is required to be replaced in a workshop with high capacity, the production time is greatly wasted, in order to reduce the replacement times of the backboard paper roll 3, a roll with a longer number of meters is adopted in the embodiment, for example, a backboard 4 with 800 m/roll, however, the diameter of the backboard paper roll 3 of the backboard 4 is larger, a gap exists between the backboard paper roll 3 and the air expansion shaft 1, and the expansion amplitude of the air expansion shaft 1 is limited, so that the backboard paper roll 3 with a large number of rolls is still difficult to be stably installed. In addition, if directly change for large-scale physiosis axle 1, not only can increase the cost, increase the occupation of land space of equipment, large-scale physiosis axle 1 is bulky moreover usually, heavy, and the staff takes inconvenience, easily produces the incident.

Therefore, in this embodiment, if the back plate 4 is replaced with 800 m/roll, a gap exists between the back plate paper roll 3 and the air expansion shaft 1, the clamping block tool 2 is additionally arranged in the gap, the diameter of the air expansion shaft 1 can be greatly increased due to the arrangement of the clamping block tool 2, so that the back plate paper roll 3 is stably clamped, at this time, the back plate 4 meters wound on the single back plate paper roll 3 is longer, the durability is realized, the number of times of replacing the back plate paper roll 3 is reduced, and the production efficiency is greatly improved.

Example two:

if the specifications of the replacement backing paper roll 3 are not uniform, that is, the number of meters of the backing 4 is different, the distances between the backing paper roll 3 and the air inflation shaft 1 are different, and therefore, the backing paper roll needs to be adjusted respectively.

In this embodiment, the first ventilation slot 203 is opened in the middle of the arc-shaped plate 201, the bottom of the first ventilation slot 203 is fixedly provided with a circular ring bearing 6, a rotating rod 7 is hinged in the circular ring bearing 6, a rotating wheel 8 is fixedly arranged on the rotating rod 7, a worker can directly and manually rotate the rotating wheel 8, or can clamp a tool such as a screwdriver and the like with raised grains in a locking slot 801 on the surface of the rotating wheel 8, thereby driving the rotating wheel 8 to rotate, the rotating wheel 8 at the moment drives the screw rod 9 to rotate through the rotating rod 7, so that the nut 10 moves along the lead screw 9, the nut 10 pushes the inner clamping plate 12 by the push rod 11, further changing the distance between the inner clamping plate 12 and the arc-shaped plate 201, the whole thickness of the clamping block tool 2 is changed, the clamping block tool 2 can adapt to the backboard paper winding drums 3 with different diameters, and is simple in adjustment operation and high in universality.

Example three:

if the diameter of the back plate paper roll 3 or the back plate 4 is large, the height of the limiting convex ring 202 in the initial state in the first embodiment and the second embodiment is low, the limiting convex ring 202 is difficult to stabilize and limit the back plate paper roll 3 or the back plate 4, at this time, the distance between the limiting arc-shaped rod 15 and the limiting convex ring 202 can be adjusted through the adjusting mechanism, further, the limiting arc-shaped rod 15 moves upwards moderately, the back plate paper roll 3 and the back plate 4 are limited stably from two ends, shaking and sliding of the back plate paper roll 3 and the back plate 4 in the using process are avoided, in the process of adjusting the height position of the limiting arc-shaped rod 15, the adjusting rod 14 can slide along the adjusting groove 2021, and the adjusting rod 14 plays a role in auxiliary limiting.

Example four:

the principle of this embodiment and third embodiment is similar, but in this embodiment, the adjustment mechanism of distance between adjustment spacing arc pole 15 and the spacing bulge loop 202 has carried out further injectd, this adjustment mechanism includes cylinder 16, the fixed setting of one end of cylinder 16 is fixed at lower fixed block 17, the other end is fixed to be set up in last fixed block 18, lower fixed block 17 is fixed to be set up on the spacing bulge loop, it sets up on spacing bulge loop 202 to go up fixed block 18 is fixed, in the use, if the high position of spacing arc pole 15 needs to be adjusted, can start cylinder 16, make cylinder 16 extend or shrink, and then drive spacing arc pole 15 remove to suitable position can, carry out stable position to backplate paper reel 3 or backplate 4 from both ends and injectd.

Example five:

the principle of this embodiment is similar to that of the third embodiment, but in this embodiment, an adjusting mechanism for adjusting the distance between the limiting arc-shaped rod 15 and the limiting convex ring 202 is further defined, the adjusting mechanism includes a first fixing plate 19 and a second fixing plate 20, the first fixing plate 19 is fixedly disposed on the limiting arc-shaped rod 15, the second fixing plate 20 is fixedly disposed on the limiting convex ring 202, if the height position of the limiting arc-shaped rod 15 needs to be adjusted, the fixing screw 22 can be rotated and removed first, after the limiting arc-shaped rod 15 is lifted and lowered to a proper position, the fixing screw 22 is screwed in the aligned threaded groove 21 and the threaded through hole formed in the second fixing plate 20, at this time, the adjusted limiting arc-shaped rod 15 can keep stable in height, and further perform stable position limitation on the backing plate paper roll 3 or the backing plate 4.

Example six:

the principle of this embodiment is similar to that of the third embodiment, but in this embodiment, an adjusting mechanism for adjusting the distance between the limiting arc-shaped rod 15 and the limiting convex ring 202 is further limited, the adjusting mechanism includes a deeper concave-shaped thread groove 23, an adjusting screw 24 and a bearing seat 25, the adjusting screw 24 is arranged in the concave-shaped thread groove 23 in a threaded manner, if the height position of the limiting arc-shaped rod 15 needs to be adjusted, the length of the adjusting screw 24 in the concave-shaped thread groove 23 can be rotationally changed, and then the overall height of the concave-shaped thread groove 23, the adjusting screw 24 and the bearing seat 25 is changed, and the height of the limiting arc-shaped rod 15 relative to the limiting convex ring 202 is also changed, so that the stable position limitation is performed on the backing paper roll 3 or the backing plate 4.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A mounting structure for photovoltaic large roll back sheets, comprising:

the outer side of the inflatable shaft (1) is sleeved with a back plate paper roll (3);

the clamp block tool (2), the clamp block tool (2) is arranged between the air expansion shaft (1) and the back plate paper roll (3); and

the backboard (4) is wound on the backboard paper roll (3).

2. The mounting structure for photovoltaic large roll back sheet according to claim 1, wherein: the clamping block tool (2) comprises an arc-shaped plate (201), a limiting protruding ring (202) is integrally formed on one side of the arc-shaped plate (201), and a concave first ventilating groove (203) is formed in the arc-shaped plate (201).

3. The mounting structure for photovoltaic large roll back sheet according to claim 2, wherein: both ends of the inflatable shaft (1) are provided with rotating bearings (5).

4. A mounting structure for a photovoltaic large roll back sheet according to claim 2 or 3, wherein: the centre of arc (201) is seted up in first ventilation groove (203), the fixed ring bearing (6) that is provided with in bottom of first ventilation groove (203), articulated rotary rod (7) that is provided with in ring bearing (6), rotary rod (7) run through and articulated the setting in arc (201), the fixed runner (8) that is provided with of one end that rotary rod (7) are located first ventilation groove (203), the fixed lead screw (9) that is provided with of one end that runner (8) were kept away from in rotary rod (7), the activity is provided with nut (10) on lead screw (9), the fixed push rod (11) that is provided with on nut (10), the fixed interior splint (12) that are provided with of one end that rotary rod (7) were kept away from in push rod (11), the fixed block piece (13) that is provided with of one end that rotary rod (7) were kept away from in lead screw (9).

5. The mounting structure for photovoltaic large roll back sheet according to claim 4, wherein: and a locking groove (801) is formed in the surface of the rotating wheel (8).

6. The mounting structure for photovoltaic large roll back sheet according to claim 4, wherein: and a clamping groove (121) is formed in one side, far away from the arc-shaped plate (201), of the inner clamping plate (12).

7. The mounting structure for photovoltaic large roll back sheet according to claim 4, wherein: an adjusting groove (2021) is formed in the limiting convex ring (202), an adjusting rod (14) is movably arranged in the adjusting groove (2021), the adjusting rod (14) is fixed at the bottom of the limiting arc-shaped rod (15), and the distance between the limiting arc-shaped rod (15) and the limiting convex ring (202) can be adjusted through an adjusting mechanism.

8. The mounting structure for photovoltaic large roll back sheet according to claim 7, wherein: adjustment mechanism includes cylinder (16), the fixed setting of one end of cylinder (16) is on lower fixed block (17), fixed block (17) are fixed to be set up in one side that spacing bulge loop (202) is close to spacing arc pole (15) down, fixed block (18) are fixed to be provided with to the output that fixed block (17) were kept away from down in cylinder (16), go up fixed block (18) and fix the setting in one side that spacing arc pole (15) are close to spacing bulge loop (202).

9. The mounting structure for photovoltaic large roll back sheet according to claim 7, wherein: the adjusting mechanism comprises a first fixing plate (19) and a second fixing plate (20), the first fixing plate (19) is fixedly arranged on one side, close to the limiting protruding ring (202), of the limiting arc-shaped rod (15), the second fixing plate (20) is fixedly arranged on one side, close to the limiting protruding ring (15), of the limiting protruding ring (202), a plurality of thread grooves (21) are formed in the first fixing plate (19), and fixing screws (22) penetrate through thread through holes formed in the thread grooves (21) and the second fixing plate (20).

10. The mounting structure for photovoltaic large roll back sheet according to claim 7, wherein: the adjusting mechanism comprises a downward concave thread groove (23), the downward concave thread groove (23) is fixedly arranged on one side, close to the limiting convex ring (202), of the limiting arc-shaped rod (15), an adjusting screw rod (24) is arranged in the downward concave thread groove (23) in a threaded mode, one end, far away from the downward concave thread groove (23), of the adjusting screw rod (24) is hinged to a bearing seat (25), and the bearing seat (25) is fixedly arranged on one side, close to the limiting arc-shaped rod (15), of the limiting convex ring (202).