Photovoltaic module caching equipment with low cost and high transmission efficiency

Abstract

The utility model discloses photovoltaic module caching equipment with low cost and high transmission efficiency. The device comprises a rack, a first conveying line and a second conveying line which are arranged in the rack and are used for conveying photovoltaic modules, and a lifting caching device which is used for caching the photovoltaic modules on the first conveying line or putting the cached photovoltaic modules onto the first conveying line, the lifting temporary storage device comprises a servo motor, a first transmission mechanism driven by the servo motor to conduct rotary transmission and a second transmission mechanism arranged opposite to the first transmission mechanism, a plurality of layers of supporting rods are arranged on the first transmission mechanism and the second transmission mechanism at intervals in the vertical direction, and the supporting rods are located on the front side and the rear side of the first conveying line. The front and rear supporting rods in each layer are located at the same height and jointly form a supporting plane for supporting the photovoltaic module. According to the utility model, the overall structure is simple, the cost is low, the transmission efficiency can be improved, the transmission precision can be improved, and the position deviation of the photovoltaic module during caching or putting can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic module production technical field, especially, relate to a kind of photovoltaic module buffer equipment of low cost and high transmission efficiency.

BACKGROUND

[0002] In the automatic flow production process of photovoltaic module, the beat time of product offline at each station of flow line under normal operating condition is consistent, if fault occurs at rear station, it will cause the blockage of front station, and further cause the shutdown of all stations in front, affect normal production, therefore, it is necessary to set buffer device between appropriate stations, for temporarily storing material on station conveying line, and also can automatically place buffered material to conveying line.

[0003] The existing device, such as the large storage stack buffer device disclosed in Chinese patent publication No. CN215755011U, still has the following problems: the servo drive mechanism includes a drive shaft driven by a servo motor, vertical screws connected to both ends of the drive shaft, and a drive plate moving up and down along the screw, both sides of the rack are provided with a fixed frame for accommodating the screw, the side of the fixed frame is provided with a sliding rail matched with the drive plate, when the servo drive mechanism drives the lifting mechanism to move up and down, it needs to be realized through the cooperation of the screw, the drive plate, the fixed frame and the sliding rail, not only the driving rhythm is slow, the transmission efficiency is low, but also the setting of the screw, the drive plate, the fixed frame and the sliding rail will make the whole device complex, not only the assembly efficiency is low, but also the production cost is high; moreover, the servo motor and the drive shaft in the scheme are set above the rack, which is not conducive to the inspection and maintenance of the servo motor and the drive shaft.

[0004] Therefore, it is necessary to provide a kind of photovoltaic module buffer equipment of low cost and high transmission efficiency to solve the above technical problems.

UTILITARY MODEL CONTENT

[0005] The main purpose of the utility model is to provide a kind of photovoltaic module buffer equipment of low cost and high transmission efficiency, the overall structure is simple, low in cost, and can improve the efficiency of transmission, improve the accuracy of transmission, and also can avoid the position deviation of photovoltaic module during buffering or putting.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme: a kind of photovoltaic module buffer equipment of low cost and high transmission efficiency, it includes rack, the first conveying line of setting in the rack and conveying photovoltaic module, the second conveying line of setting at the two ends before and after the first conveying line and the lifting buffer device of buffering photovoltaic module on the first conveying line or putting buffered photovoltaic module to the first conveying line;

[0007] The lifting buffer device comprises a servo motor arranged at the bottom of the rack, a first transmission mechanism driven to rotate by the servo motor, and a second transmission mechanism arranged opposite to the first transmission mechanism, the first transmission mechanism and the second transmission mechanism are rotationally transmitted through a first transmission assembly, a plurality of layers of supporting rods are arranged on the first transmission mechanism and the second transmission mechanism in an up-down interval, the supporting rods are arranged on the front and back sides of the first conveying line, and each layer of the front and back supporting rods is at the same height and forms a supporting plane for supporting the photovoltaic modules.

[0008] Further, the first transmission mechanism comprises a driving shaft driven to rotate by the servo motor, and a first transmission shaft arranged in parallel above the driving shaft, the driving shaft and the first transmission shaft are rotationally transmitted through a second transmission assembly;

[0009] The second transmission assembly comprises first transmission wheels arranged at both ends of the driving shaft and the first transmission shaft, and a first transmission belt vertically arranged between the first transmission wheels.

[0010] Further, the second transmission mechanism comprises a driven shaft arranged in parallel with the driving shaft, and a second transmission shaft arranged in parallel above the driven shaft, the driven shaft and the second transmission shaft are rotationally transmitted through a third transmission assembly;

[0011] The third transmission assembly comprises second transmission wheels arranged at both ends of the driven shaft and the second transmission shaft, and a second transmission belt vertically arranged between the second transmission wheels.

[0012] Further, both ends of the driving shaft, the driven shaft, the first transmission shaft, and the second transmission shaft are arranged on the rack through mounting seats;

[0013] Both the first transmission belt and the second transmission belt are detachably arranged with a plurality of horizontal layers of the supporting rods.

[0014] Further, the first transmission assembly comprises third transmission wheels arranged on the driving shaft and the driven shaft, and a third transmission belt arranged around the third transmission wheels;

[0015] The servo motor and the driving shaft are rotationally transmitted through a fourth transmission assembly, the fourth transmission assembly comprises a fourth transmission wheel arranged around an output shaft end of the servo motor, and a fourth transmission belt arranged around the first transmission wheel and the fourth transmission wheel.

[0016] Further, the first transmission belt and the second transmission belt are provided with straightening modules, the straightening module comprises a first straightening plate and a second straightening plate which are respectively arranged on the two sides of the first transmission belt or the second transmission belt, the first straightening plate and the second straightening plate are oppositely arranged and a first avoiding gap for the first transmission belt or the second transmission belt to move up and down is formed between the first straightening plate and the second straightening plate.

[0017] Further, the lower part of the mounting seat at the two ends of the first transmission shaft and the second transmission shaft is provided with a tension adjusting module for adjusting the tension of the first transmission belt and the second transmission belt.

[0018] The tension adjusting module comprises an adjusting plate fixedly arranged below the mounting seat and a plurality of fasteners arranged on the adjusting plate, the adjusting plate is mounted to the rack through the fasteners, and the height of the first transmission shaft and the second transmission shaft is adjusted by screwing the fasteners up and down, so that the tension of the first transmission belt and the second transmission belt is adjusted.

[0019] Further, the third transmission belt and the fourth transmission belt are coated with lubricating oil, and an oil receiving box is arranged below the third transmission belt and the fourth transmission belt.

[0020] Further, the first transmission wheel, the second transmission wheel, the third transmission wheel and the fourth transmission wheel are all arranged as sprockets or synchronous wheels, and the first transmission belt, the second transmission belt, the third transmission belt and the fourth transmission belt are all arranged as chains or synchronous belts.

[0021] Further, the first conveying line and the second conveying line are arranged in the same direction and at the same height, and a second avoiding gap for avoiding the supporting rod is arranged between the first conveying line and the second conveying line.

[0022] The first conveying line and the second conveying line are the same in structure and both comprise a motor arranged on the rack and a plurality of belt lines arranged at equal intervals.

[0023] Compared with the prior art, the photovoltaic module buffering device with low cost and high transmission efficiency has the following advantages:

[0024] (1) The lifting buffering device is driven by a servo motor to drive the first transmission mechanism and the second transmission mechanism to move up and down at the same time, which not only has a simple structure, but also can improve the transmission efficiency and the transmission precision, can ensure that the supporting rods on the front and back sides are at the same height, and can avoid the position deviation of the photovoltaic module when buffering or releasing;

[0025] (2) Servo motor is located at the bottom of the rack, in low position, can facilitate inspection and maintenance;

[0026] (3) The tension adjusting module can adjust the tension of the first transmission belt and the second transmission belt, so that the tension of the first transmission belt and the second transmission belt is appropriate, thereby ensuring the stability of the up-down movement of the supporting rod; the straightening module is arranged on the first transmission belt and the second transmission belt, which can avoid the first transmission belt or the second transmission belt from shaking when moving up and down, ensure the stability of the up-down circulation movement of the first transmission belt and the second transmission belt, and avoid the position deviation of the photovoltaic module when buffering or putting;

[0027] (4) The rack has a simple structure, and is a square frame assembled by horizontal and vertical mounting beams; the mounting beams can be directly welded and assembled into an integrated welded rack, compared with the rack in the prior art, the material cost and the manual assembly cost can be saved, and the assembly error can be reduced.

DRAWINGS

[0028] Figure 1 It is a three-dimensional structure schematic view of a low-cost and high-efficiency photovoltaic module buffering device according to an embodiment of the present application;

[0029] Figure 2 It is a three-dimensional structure schematic view of a rack, a first conveying line and a second conveying line according to an embodiment of the present application;

[0030] Figure 3 It is a three-dimensional structure schematic view of a lifting buffering device according to an embodiment of the present application;

[0031] Figure 4 It is a three-dimensional structure schematic view of a lifting buffering device according to an embodiment of the present application;

[0032] Figure 5 It is a three-dimensional structure schematic view of a low-cost and high-efficiency photovoltaic module buffering device according to an embodiment of the present application; Figure 4 It is an enlarged structure schematic view of a part A in the embodiment of the present application;

[0033] Figure 6 It is an enlarged structure schematic view of a part B in the embodiment of the present application; Figure 4 It is an enlarged structure schematic view of a part B in the embodiment of the present application;

[0034] Numerals in the figure represent:

[0035] 100 - a low-cost and high-efficiency photovoltaic module buffering device;

[0036] 1 - a rack; 2 - a first conveying line, 21 - a motor, 22 - a belt line; 3 - a second conveying line;

[0037] 4-lifting buffer device, 41-servo motor, 42-first transmission mechanism, 421-driving shaft, 422-first transmission shaft, 423-second transmission assembly, 4231-first transmission wheel, 4232-first transmission belt, 43-second transmission mechanism, 431-driven shaft, 432-second transmission shaft, 433-third transmission assembly, 4331-second transmission wheel, 4332-second transmission belt, 44-first transmission assembly, 441-third transmission wheel, 442-third transmission belt, 45-supporting rod, 46-fourth transmission assembly, 461-fourth transmission wheel, 462-fourth transmission belt, 47-mounting base, 48-tensioning adjustment module, 481-adjustment plate, 482-fastener, 49-oil receiving box, 410-straightening module, 4101-first straightening plate, 4102-second straightening plate, 4103-mounting end, 4104-straightening end, 4105-first clearance; 5-second clearance. DETAILED DESCRIPTION

[0038] Please refer to Figures 1-6 The embodiment is a low-cost and high-transmission-efficiency photovoltaic module buffer device 100. The low-cost and high-transmission-efficiency photovoltaic module buffer device 100 comprises a rack 1, a first conveying line 2 arranged in the rack 1 and conveying photovoltaic modules, a second conveying line 3 arranged at the front and rear ends of the first conveying line 2, and a lifting buffer device 4 for buffering photovoltaic modules on the first conveying line 2 or placing buffered photovoltaic modules on the first conveying line 2. The lifting buffer device 4 comprises a servo motor 41 arranged at the bottom of the rack 1, a first transmission mechanism 42 driven by the servo motor 41 to rotate, and a second transmission mechanism 43 arranged opposite to the first transmission mechanism 42. The first transmission mechanism 42 and the second transmission mechanism 43 are connected by a first transmission assembly 44 to realize rotation transmission. The first transmission mechanism 42 and the second transmission mechanism 43 are both arranged with a plurality of layers of supporting rods 45 at intervals in the vertical direction. The supporting rods 45 are arranged at the front and rear sides of the first conveying line 2. The front and rear supporting rods 45 of each layer are at the same height and together form a supporting plane for supporting photovoltaic modules. The lifting buffer device 4 is driven by the servo motor 41 to simultaneously lift the first transmission mechanism 42 and the second transmission mechanism 43. The transmission efficiency is high, the transmission precision is high, the front and rear supporting rods 45 can be kept at the same height, and the position deviation of the photovoltaic modules during buffering or placing can be avoided.

[0039] The first transmission mechanism 42 comprises a driving shaft 421 driven to rotate by the servo motor 41, a first transmission shaft 422 arranged in parallel above the driving shaft 421, and a second transmission assembly 423 arranged between the driving shaft 421 and the first transmission shaft 422 to realize rotation transmission. The second transmission assembly 423 comprises first transmission wheels 4231 arranged at both ends of the driving shaft 421 and the first transmission shaft 422, and a first transmission belt 4232 arranged vertically around the first transmission wheels 4231.

[0040] The second transmission mechanism 43 comprises a driven shaft 431 arranged in parallel with the driving shaft 421, and a second transmission shaft 432 arranged in parallel above the driven shaft 431. The third transmission assembly 433 is arranged between the driven shaft 431 and the second transmission shaft 432 to realize rotation transmission. The third transmission assembly 433 comprises second transmission wheels 4331 arranged at both ends of the driven shaft 431 and the second transmission shaft 432, and a second transmission belt 4332 arranged vertically around the second transmission wheels 4331.

[0041] Both ends of the driving shaft 421, the driven shaft 431, the first transmission shaft 422 and the second transmission shaft 432 are arranged on the rack 1 through the mounting seat 47. Both ends of the driving shaft 421, the driven shaft 431, the first transmission shaft 422 and the second transmission shaft 432 are arranged on the mounting seat 47 through bearings, which can ensure the stability of the rotation of the driving shaft 421, the driven shaft 431, the first transmission shaft 422 and the second transmission shaft 432. A plurality of horizontal layers of supporting rods 45 are arranged on the first transmission belt 4232 and the second transmission belt 4332, which can be disassembled. The number of layers of the supporting rods 45 can be set according to the height of the photovoltaic module to be stored, and the number of stored photovoltaic modules is large, and the disassembly and assembly are simple and convenient. The first transmission assembly 44 comprises third transmission wheels 441 arranged on the driving shaft 421 and the driven shaft 431, and a third transmission belt 442 arranged around the third transmission wheels 441. The fourth transmission assembly 46 is arranged between the servo motor 41 and the driving shaft 421 to realize rotation transmission. The fourth transmission assembly 46 comprises a fourth transmission wheel 461 arranged around the output shaft end of the servo motor 41, and a fourth transmission belt 462 arranged around the first transmission wheel 4231 and the fourth transmission wheel 461.

[0042] Since the first transmission belt 4232 and the second transmission belt 4332 are vertically extended and are provided with a plurality of layers of supporting rods 45, the more the number of photovoltaic modules to be buffered, the higher the first transmission belt 4232 and the second transmission belt 4332 are. In order to ensure the stability of the up-down circulation movement of the first transmission belt 4232 and the second transmission belt 4332, a straightening module 410 is arranged on the first transmission belt 4232 and the second transmission belt 4332. The straightening module 410 includes a first straightening plate 4101 and a second straightening plate 4102 which are oppositely arranged and respectively located on both sides of the first transmission belt 4232 or the second transmission belt 4332. The first straightening plate 4101 and the second straightening plate 4102 are the same in structure and each include a mounting end 4103 fixedly mounted to the rack 1 and a straightening end 4104 for straightening the first transmission belt 4232 or the second transmission belt 4332. The straightening ends 4104 of the first straightening plate 4101 and the second straightening plate 4102 are oppositely arranged and form a first avoiding gap 4105 for the up-down movement of the first transmission belt 4232 or the second transmission belt 4332. The first straightening plate 4101 and the second straightening plate 4102 profiledly clamp the first transmission belt 4232 or the second transmission belt 4332 on both sides to avoid the first transmission belt 4232 or the second transmission belt 4332 from shaking when moving up and down. It should be noted that although the first straightening plate 4101 and the second straightening plate 4102 are clamped on both sides of the first transmission belt 4232 or the second transmission belt 4332, there is a clearance between the first straightening plate 4101, the second straightening plate 4102 and the first transmission belt 4232 or the second transmission belt 4332, which does not affect the up-down circulation movement of the first transmission belt 4232 and the second transmission belt 4332.

[0043] In order to make the tension of the first transmission belt 4232 and the second transmission belt 4332 appropriate, a tension adjusting module 48 is arranged below the mounting seat 47 at both ends of the first transmission shaft 422 and the second transmission shaft 432. The tension adjusting module 48 is used for adjusting the tension of the first transmission belt 4232 and the second transmission belt 4332. The tension adjusting module 48 includes an adjusting plate 481 fixedly arranged below the mounting seat 47 and a plurality of fasteners 482 arranged on the adjusting plate 481. The fastener 482 is a matched part of a bolt and a nut. The adjusting plate 481 is installed to the rack 1 through the fastener 482. The height of the adjusting plate 481 is adjusted by screwing the fastener 482 up and down, so as to adjust the height of the first transmission shaft 422 and the second transmission shaft 432, and further adjust the tension of the first transmission belt 4232 and the second transmission belt 4332, so as to ensure that the tension of the first transmission belt 4232 and the second transmission belt 4332 is appropriate, thereby ensuring the stability of the up-down movement of the supporting rod 45.

[0044] In order to ensure the stability of transmission between the servo motor 41, the drive shaft 421 and the driven shaft 431, the third transmission belt 442 and the fourth transmission belt 462 are coated with lubricating oil. In order to avoid the lubricating oil from falling on the rack 1 and polluting the equipment, the oil receiving box 49 is arranged below the third transmission belt 442 and the fourth transmission belt 462. The coated lubricating oil can ensure smooth transmission between the servo motor 41, the drive shaft 421 and the driven shaft 431, and can avoid the problem of jamming between the transmission belt and the transmission wheel. The arranged oil receiving box 49 can prevent the lubricating oil from polluting the machine 1 and ensure the cleanliness of the equipment.

[0045] In the embodiment, the first transmission wheel 4231, the second transmission wheel 4331, the third transmission wheel 441 and the fourth transmission wheel 461 are all arranged as sprockets, and the first transmission belt 4232, the second transmission belt 4332, the third transmission belt 442 and the fourth transmission belt 462 are all arranged as chains.

[0046] In other embodiments, the first transmission wheel 4231, the second transmission wheel 4331, the third transmission wheel 441 and the fourth transmission wheel 461 are all arranged as synchronous wheels, and the first transmission belt 4232, the second transmission belt 4332, the third transmission belt 442 and the fourth transmission belt 462 are all arranged as synchronous belts.

[0047] The rack 1 has a simple structure, which is a square frame assembled by horizontal and vertical mounting beams. The mounting beams can be directly welded and assembled into an integral welded rack. Compared with the rack of the large-capacity stacking and caching equipment disclosed in the prior art CN215755011U, the rack can save material cost and labor assembly cost, and can also reduce assembly error.

[0048] The first conveying line 2 and the second conveying line 3 have the same conveying direction and are arranged at the same height. A second avoiding gap 5 for avoiding the supporting rod 45 is arranged between the first conveying line 2 and the second conveying line 3. The first conveying line 2 and the second conveying line 3 have the same structure and each include a motor 21 arranged on the rack 1 and a plurality of belt lines 22 arranged at equal intervals. The motor 21 drives the belt lines 22 to convey the photovoltaic modules. In the embodiment, four parallel belt lines 22 are arranged. Compared with the large-capacity stacking and caching equipment disclosed in the prior art CN215755011U, which uses a belt conveying line and a roller conveying line to convey the photovoltaic modules, the first conveying line 2 and the second conveying line 3 both convey the photovoltaic modules by the belt, which is more synchronous and stable, and can avoid the problem of offset of the photovoltaic modules due to shaking at the joint.

[0049] When the photovoltaic module buffering device 100 with low cost and high transmission efficiency is applied, if the photovoltaic module on the processing station needs to be buffered, the second conveying line 3 is connected with the conveying line of the processing station, the photovoltaic module is conveyed to the first conveying line 1 through the second conveying line 3, at this time, the supporting rods 45 are in the second avoiding gap 5 and below the photovoltaic module, the servo motor 41 drives the first transmission mechanism 42 and the second transmission mechanism 43 to rotate, the supporting rods 45 on the front and back sides are lifted to support and lift the photovoltaic module, and the buffering of the photovoltaic module is realized; if the photovoltaic module on the buffering device needs to be automatically put on the processing station, the second conveying line 3 is connected with the conveying line of the processing station, the servo motor 41 drives the first transmission mechanism 42 and the second transmission mechanism 43 to rotate reversely, the supporting rods 45 are lowered and the photovoltaic module on the supporting rods 45 is put on the first conveying line 1, then the photovoltaic module is conveyed to the conveying line of the processing station through the second conveying line 3, the photovoltaic module is put, the photovoltaic module buffering device 100 with low cost and high transmission efficiency buffers from top to bottom, and the photovoltaic module is put from bottom to top.

[0050] The above only describes some embodiments of the present application. Those skilled in the art can make some modifications and improvements without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A low cost and high transmission efficiency photovoltaic module storage device, characterized in that: It includes a rack, a first conveying line arranged in the rack and conveying photovoltaic modules, a second conveying line arranged at both ends of the first conveying line, and a lifting and buffering device for buffering photovoltaic modules on the first conveying line or putting buffered photovoltaic modules onto the first conveying line; The lifting and buffering device includes a servo motor arranged at the bottom of the rack, a first transmission mechanism driven to rotate by the servo motor, and a second transmission mechanism arranged opposite to the first transmission mechanism, the first transmission mechanism and the second transmission mechanism are rotationally transmitted by a first transmission assembly, and a plurality of layers of supporting rods are arranged on the first transmission mechanism and the second transmission mechanism in an up-down interval, the supporting rods are located on the front and back sides of the first conveying line, and each layer of the front and back supporting rods is located at the same height and forms a supporting plane for supporting photovoltaic modules.

2. A low cost and high transmission efficiency photovoltaic module storage device according to claim 1, characterized in that: The first transmission mechanism includes a driving shaft driven to rotate by the servo motor, and a first transmission shaft arranged in parallel above the driving shaft, the driving shaft and the first transmission shaft are rotationally transmitted by a second transmission assembly; The second transmission assembly includes first transmission wheels arranged at both ends of the driving shaft and the first transmission shaft, and a first transmission belt vertically arranged between the first transmission wheels.

3. A low cost and high transmission efficiency photovoltaic module storage device according to claim 2, characterized in that: The second transmission mechanism includes a driven shaft arranged in parallel with the driving shaft, and a second transmission shaft arranged in parallel above the driven shaft, the driven shaft and the second transmission shaft are rotationally transmitted by a third transmission assembly; The third transmission assembly includes second transmission wheels arranged at both ends of the driven shaft and the second transmission shaft, and a second transmission belt vertically arranged between the second transmission wheels.

4. A low cost and high transmission efficiency photovoltaic module storage device according to claim 3, characterized in that: Both ends of the driving shaft, the driven shaft, the first transmission shaft, and the second transmission shaft are arranged on the rack by mounting seats; Both the first transmission belt and the second transmission belt are detachably provided with a plurality of horizontal layers of supporting rods.

5. The low cost and high transmission efficiency photovoltaic module storage device according to claim 3, characterized in that: The first transmission assembly includes third transmission wheels arranged on the driving shaft and the driven shaft, and a third transmission belt arranged around the third transmission wheels; The servo motor and the driving shaft are rotationally transmitted by a fourth transmission assembly, the fourth transmission assembly includes a fourth transmission wheel arranged around the output shaft end of the servo motor, and a fourth transmission belt arranged around the first transmission wheel and the fourth transmission wheel.

6. A low cost and high transmission efficiency photovoltaic module storage device as claimed in claim 3, wherein: Both the first transmission belt and the second transmission belt are provided with a straightening module, the straightening module includes first straightening plates and second straightening plates located on both sides of the first transmission belt or the second transmission belt, respectively, the first straightening plates and the second straightening plates are arranged opposite to each other and form a first avoiding gap between them for the first transmission belt or the second transmission belt to move up and down.

7. A low cost and high transmission efficiency photovoltaic module storage device as claimed in claim 4, wherein: The lower part of the mounting seat at both ends of the first transmission shaft and the second transmission shaft is provided with a tension adjusting module for adjusting the tension of the first transmission belt and the second transmission belt; The tension adjusting module comprises an adjusting plate fixedly arranged below the mounting seat and a plurality of fasteners arranged on the adjusting plate, the adjusting plate is mounted to the rack through the fasteners, and the height of the first transmission shaft and the second transmission shaft is adjusted by screwing the fasteners up and down, so as to adjust the tension of the first transmission belt and the second transmission belt.

8. A low cost and high transmission efficiency photovoltaic module storage device as claimed in claim 5, wherein: The third transmission belt and the fourth transmission belt are coated with lubricating oil, and an oil receiving box is arranged below each of the third transmission belt and the fourth transmission belt.

9. A low cost and high transmission efficiency photovoltaic module storage device as claimed in claim 5, wherein: The first transmission wheel, the second transmission wheel, the third transmission wheel and the fourth transmission wheel are all arranged as sprockets or all arranged as synchronous wheels, and the first transmission belt, the second transmission belt, the third transmission belt and the fourth transmission belt are all arranged as chains or synchronous belts.

10. A low cost and high transmission efficiency photovoltaic module storage device as claimed in claim 1, wherein: The first conveying line and the second conveying line are arranged in the same direction and at the same height, and a second avoiding gap for avoiding the supporting rod is arranged between the first conveying line and the second conveying line. The first conveying line and the second conveying line have the same structure and each comprise a motor arranged on the rack and a plurality of belt lines arranged at equal intervals.

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