A construction method and device for roof photovoltaic panels

Abstract

This invention relates to the field of photovoltaic power generation technology, specifically to a construction method and device for rooftop photovoltaic panels. The specific steps of the rooftop photovoltaic panel construction method include: pouring an independent base foundation on the factory roof; installing the support frame on the base foundation; installing solar photovoltaic modules onto the support frame; installing the inverter; laying cables; system debugging and trial operation; using a square independent base foundation, with the support frame connected to the cement foundation using pre-embedded bolts. It has strong load-bearing capacity, good flood and wind resistance, reliable stress distribution, does not damage the cement roof, has good strength and high precision, and is simple and convenient to construct, requiring no large construction equipment. Using the existing industrial factory building roof as a foundation, photovoltaic power generation equipment is added to the roof, maximizing the use of idle roof space and solar energy to achieve energy conservation, emission reduction, and power generation.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, and in particular to a construction method and device for rooftop photovoltaic panels. Background Technology

[0002] Industrial plants refer to various buildings directly used for production or supporting production, including main workshops, auxiliary rooms, and ancillary facilities. This includes plants in all industrial, transportation, commercial, construction, research, and educational institutions. Industrial plants include not only production workshops but also their ancillary buildings. The "industrial relocation to upper floors" initiative aims to address the land shortage and low utilization rate of existing industrial land faced by rapidly developing urban economies, and has thus actively explored a new spatial model for industrial carriers.

[0003] There is a lot of unused space on the roofs of industrial buildings under the existing industrial building-to-floor model. Therefore, there is an urgent need for a roof photovoltaic panel construction method to add photovoltaic power generation equipment to the roofs of industrial buildings to achieve the purpose of energy conservation, emission reduction and power generation. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method and device for roof photovoltaic panels, which uses the existing roof of an industrial plant as a foundation and adds photovoltaic power generation equipment to the roof to maximize the use of idle space on the roof and solar energy, thereby achieving the purpose of energy conservation, consumption reduction and power generation.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a construction method for rooftop photovoltaic panels, the specific steps of which include:

[0006] Plan the longitudinal and transverse axis positions of the base foundation, and pour an independent base foundation on the roof of the factory building;

[0007] Clean the roof and install the bracket on the base according to the base foundation layout drawing and the foundation embedded parts;

[0008] The solar photovoltaic modules are moved onto the support frame one by one and placed according to the position of the pressure block. Then the pressure block is used to press the photovoltaic modules firmly.

[0009] Install the inverter strictly according to the instructions, and check the cable insulation and verify the cable phase sequence and polarity before wiring the AC and DC sides of the inverter.

[0010] When laying cables, vertically laid cables or cables inclined at more than 45° should be fixed every 2m, and horizontally laid cables should be fixed every 5 to 10m. Cables should also be fixed at both ends, bends, and joints.

[0011] The system was debugged and put into trial operation.

[0012] The specific steps of cleaning the roof and installing the bracket on the base foundation according to the foundation layout drawing and using the foundation embedded parts include:

[0013] Remove the roof debris from the site and clean the roof thoroughly.

[0014] Determine the location of each support leg installation point according to the base foundation layout diagram;

[0015] Connect the column to the foundation embedded parts by finding the holes, and fix it with through bolts after confirming the elevation;

[0016] Fix the angle steel purlin bracket to the inclined beam with bolts, then connect the hinge to the lower flange of the inclined beam with bolts. Keep all bolts loose. After aligning the holes of the inclined beam hinge and the column connector, connect them with bolts. After checking and confirming, tighten the bolt and keep the other bolts loose. Connect the inclined brace to the inclined beam. Adjust the connection hole positions of the hinge and the inclined brace to the inclined beam to ensure the optimal tilt angle. After confirmation, tighten all bolts to complete the assembly of the inclined beam and connector.

[0017] Pass the tie rod through the hole in the inclined beam, tension it, use the fan-shaped washer to fit it, and tighten the nut to fix it, thus completing the tie rod installation;

[0018] Assemble the pressure blocks onto the purlins using hex bolts according to their positions. Pre-assemble the purlin connectors onto one side of the purlins using bolts, with all bolts loose. Align the purlins with the holes and connect them to the inclined beams. After confirming the overhang lengths at both ends, use bolts to fix the purlins and purlin supports, and tighten all bolts on the purlin supports. Then tighten all bolts on the connectors, install the round steel tie rods, and tighten them with nuts after confirming their positions. This completes the assembly and connection of the purlins and pressure blocks.

[0019] The specific steps of sequentially transporting the solar photovoltaic modules onto the support frame, placing them according to the positions of the pressure blocks, and then using the pressure blocks to press the photovoltaic modules firmly include:

[0020] Based on the drawings, determine the installation location of the photovoltaic modules and lay out the lines.

[0021] Move the photovoltaic modules onto the purlins;

[0022] Untie the DC cable of the photovoltaic module and expose it outside the photovoltaic module;

[0023] Place and install the photovoltaic modules according to the positions of the pressure blocks, and then tighten the pressure block bolts to ensure that the photovoltaic modules are pressed firmly onto the purlins by the pressure blocks.

[0024] Secondly, the present invention also provides a roof photovoltaic panel construction device, comprising a mobile vehicle, two guide rails, a lifting frame, a tilting frame, a lifting assembly, a traction assembly, four fixing ropes, and two fixing clamps; the two guide rails are respectively fixedly connected to the mobile vehicle and are respectively located on one side of the mobile vehicle; the lifting frame is respectively slidably connected to the two guide rails and is located on one side of the two guide rails; the tilting frame is rotatably connected to the lifting frame and is located inside the lifting frame; the lifting assembly is disposed on the mobile vehicle; the traction assembly is disposed on the lifting frame; the four fixing ropes are respectively fixedly connected to the tilting frame and are respectively located on one side of the tilting frame; two fixing ropes are fixedly disposed on the top of each fixing clamp.

[0025] The traction assembly includes a mounting frame and a winch; the mounting frame is fixedly connected to the lifting frame and located on top of the lifting frame; the winch is fixedly connected to the mounting frame and located on one side of the mounting frame; the wire rope of the winch is fixedly connected to the tilting frame.

[0026] The fixing clamp includes a first block, two sliding rods, a second block, and a screw. The first block is fixedly connected to the two fixing ropes and is located at the bottom of the two fixing ropes. The two sliding rods are slidably connected to the first block and pass through the first block. The second block is fixedly connected to the two sliding rods and is located inside the first block. The screw is rotatably connected to the second block and threadedly connected to the first block, and passes through the first block.

[0027] The roof photovoltaic panel construction device further includes two sliding seats and two reinforcing ribs; the two sliding seats are slidably connected to the two guide rails respectively and are located on one side of the two guide rails respectively; the two reinforcing ribs are fixedly connected to the two sliding seats respectively and are fixedly connected to the lifting frame respectively, and are located at the bottom of the lifting frame respectively.

[0028] This invention discloses a construction method and apparatus for rooftop photovoltaic panels. The specific steps of the rooftop photovoltaic panel construction method include: planning the longitudinal and transverse axis positions of the base foundation; pouring an independent base foundation on the factory roof; cleaning the roof; installing the bracket on the base foundation according to the base foundation layout drawing and using the foundation embedded parts; sequentially transporting the solar photovoltaic modules onto the bracket and placing them according to the position of the pressure blocks, then pressing the photovoltaic modules tightly with the pressure blocks; strictly installing the inverter according to the instructions, and checking the cable insulation and verifying the cable phase sequence and polarity before wiring the AC and DC sides of the inverter; laying the cables, fixing vertically laid cables or cables inclined at more than 45° every 2m, and horizontally laid cables every 5-10m, fixing the beginning and end of the cables, at bends, and at cable joints; and debugging and trial operation of the system. A square independent base foundation is used, and the bracket is connected to the cement foundation base using pre-embedded bolts. It has strong load-bearing capacity, good flood and wind resistance, reliable stress distribution, does not damage the cement roof, has good strength and high precision, and is simple and convenient to construct without requiring large construction equipment. Photovoltaic modules are designed, constructed, and installed simultaneously with industrial plant buildings, achieving complete integration of solar photovoltaic power generation with building roofs. Existing industrial plant roofs serve as a foundation, with photovoltaic power generation equipment added to the rooftops. This maximizes the utilization of unused roof space and solar energy, achieving energy conservation, emission reduction, and power generation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0030] Figure 1 This is a flowchart of the first embodiment of the present invention.

[0031] Figure 2 This is a flowchart of the first embodiment of the present invention, which describes cleaning the roof, installing the bracket on the base foundation according to the base foundation layout diagram, and using the foundation embedded parts.

[0032] Figure 3 This is a flowchart of the first embodiment of the present invention, which describes how solar photovoltaic modules are sequentially transported onto a support, placed according to the position of the pressure block, and then the photovoltaic modules are pressed together with the pressure block.

[0033] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0034] Figure 5 yes Figure 4 A magnified view of detail A.

[0035] Figure 6 This is a structural schematic diagram of the second embodiment of the present invention from another angle.

[0036] Figure 7 This is a front view of the second embodiment of the present invention.

[0037] Figure 8 yes Figure 7 A magnified view of detail B.

[0038] Figure 9 This is a structural schematic diagram of the third embodiment of the present invention.

[0039] Figure 10 This is a structural schematic diagram of the fourth embodiment of the present invention.

[0040] 101-Mobile vehicle, 102-Guide rail, 103-Lifting frame, 104-Tilting frame, 105-Lifting assembly, 106-Traction assembly, 107-Fixing rope, 108-Fixing clamp, 109-Mounting frame, 110-Winder, 111-First block, 112-Slide rod, 113-Second block, 114-Screw, 115-Hydraulic cylinder, 116-Mounting seat, 117-Column, 118-Sprocket, 119-Chain, 120-Block, 121-Limit block, 122-Friction pad, 201-Sliding seat, 202-Reinforcing rib, 301-Positioning assembly, 302-U-shaped frame, 303-Electric push rod, 304-Stop block. Detailed Implementation

[0041] First embodiment:

[0042] Please see Figures 1-3 ,in, Figure 1 This is a flowchart of a roof photovoltaic panel construction method according to the present invention. Figure 2 This is a flowchart of the present invention, showing how the bracket is mounted on the base. Figure 3 This is a flowchart of the process of installing solar photovoltaic modules onto a bracket according to the present invention.

[0043] This invention provides a construction method for rooftop photovoltaic panels, the specific steps of which include:

[0044] The S1 planning base foundation is located at the longitudinal and transverse axis positions, and an independent base foundation is poured on the roof of the factory building.

[0045] The foundation is a square concrete foundation. Deviations in the longitudinal and transverse axis positions of the concrete foundation will affect the support step distance and span, causing the inclined beam to be installed at an angle. In severe cases, the inclined beam may even be impossible to install.

[0046] The support frame is connected and fixed to the concrete foundation via a base. The elevation deviation of the concrete foundation affects the installation angle of the support frame, and the flatness of the foundation's top surface directly affects the installation of the base, thus impacting the verticality of the connected support column. Generally, foundation elevation deviations can be compensated for by adding shims or adjusting holes on the column, but strict control is still necessary to prevent exceeding tolerances. The foundation's embedded bolts (embedded parts) should undergo anti-corrosion treatment, typically hot-dip galvanizing. The elevation of the embedded bolts protruding from the top surface of the foundation should conform to the design drawings, and the elevation deviation should be within acceptable limits to avoid interference. The axial deviation of the embedded bolts should also meet requirements to avoid on-site hole enlargement in the base.

[0047] It is best to pour the foundation of the same support in one go. Before installing the support, the concrete should be cured to reach 70% strength or above.

[0048] Preparations before installation:

[0049] 1. Determine the installation location of the photovoltaic panels. Generally, the orientation and tilt angle of the roof will affect the power generation efficiency of the photovoltaic panels. Generally speaking, a south-facing roof is the optimal installation location because it receives the most sunlight. Furthermore, the tilt angle of the photovoltaic panels should also be determined based on the local latitude, longitude, and solar altitude angle to maximize sunlight capture. The installation angle is typically between 10 degrees and 45 degrees.

[0050] 2. Prepare installation materials. Installing photovoltaic panels requires some necessary materials, such as photovoltaic panel brackets, bolts, expansion bolts, aluminum alloy rails, etc. The quality of these materials and the installation method are crucial to the stability and safety of the photovoltaic panels, so choosing high-quality materials is very important.

[0051] 3. Installation location and spacing. The installation location of photovoltaic panels should avoid shading and should be reasonably spaced to facilitate maintenance and upkeep.

[0052] S2 cleaned the roof and installed the bracket on the base foundation according to the base foundation layout drawing and through the foundation embedded parts;

[0053] The specific steps of cleaning the roof and installing the bracket on the base foundation according to the base foundation layout drawing and using the foundation embedded parts include:

[0054] S21 removes roof debris from the site and cleans the roof.

[0055] S22 determines the location of each support installation point according to the base foundation layout drawing;

[0056] S23 connects the column to the foundation embedded parts by finding the holes, and after confirming the elevation, uses through bolts to fix it;

[0057] S24 uses bolts to fix the angle steel purlin bracket to the inclined beam, and then uses bolts to connect the hinge to the lower flange of the inclined beam. All bolts are kept loose. After aligning the holes of the inclined beam hinge and the column connector, bolts are used to connect them. After checking and confirming, the bolt is tightened, while keeping the other bolts loose. The diagonal brace is connected to the inclined beam. The optimal tilt angle is ensured by adjusting the connection hole positions of the hinge and diagonal brace to the inclined beam. After confirmation, all bolts are tightened to complete the assembly of the inclined beam and connectors.

[0058] 1) During installation, first fix the angle steel purlin bracket to the inclined beam with bolts, then use bolts to connect the hinge to the lower flange of the inclined beam. (Keep all bolts loose)

[0059] 2) After aligning the holes of the inclined beam hinge with the column connector, use bolts to connect them. After checking and confirming, tighten the bolts and keep the other bolts loose.

[0060] 3) Connect the diagonal brace to the diagonal beam. Adjust the hinge and the connection hole position between the diagonal brace and the diagonal beam to ensure the optimal tilt angle. After confirmation, tighten all bolts.

[0061] S25: Pass the tie rod through the inclined beam hole, tension it, use the fan-shaped washer to fit it, tighten the nut to fix it, and complete the tie rod installation;

[0062] After installing the four facades according to the aforementioned steps, pass the tie rods through the holes in the inclined beams, tension them, use fan-shaped washers to engage, and tighten the nuts to secure them.

[0063] S26 Assemble the pressure block onto the purlin using hex bolts according to its position. Pre-assemble the purlin connector onto one side of the purlin using bolts, with all bolts loose. Align the purlin with the diagonal beam and connect the alignment holes. After confirming the overhang length at both ends, fix the purlin to the purlin bracket with bolts and tighten all bolts on the purlin bracket. Then tighten all bolts on the connector, install the round steel tie rod, and tighten it with nuts after confirming its position. This completes the assembly and connection of the purlin and pressure block.

[0064] Assemble the pressure blocks onto the purlins using hex bolts according to their positions (note the position of the side pressure blocks), and pre-assemble the purlin connectors onto one side of the purlin using bolts for easy subsequent connection. (All bolts should be loose.)

[0065] Align the purlins with the holes and connect them to the inclined beam. After confirming the overhang lengths at both ends, use bolts to fix the purlins to the purlin brackets and tighten all the bolts on the purlin brackets. Then tighten all the bolts on the connecting parts.

[0066] After completing the above steps, install the round steel tie rod, and tighten it with nuts after confirming the position.

[0067] S3 moves the solar photovoltaic modules onto the support frame one by one, places them according to the position of the pressure block, and then uses the pressure block to press the photovoltaic modules firmly;

[0068] The specific steps of sequentially transporting the solar photovoltaic modules onto the support frame, placing them according to the positions of the pressure blocks, and then using the pressure blocks to press the photovoltaic modules firmly include:

[0069] S31 determines the installation location of the photovoltaic modules according to the drawings and lays out the lines;

[0070] S32 moves the photovoltaic modules onto the purlins;

[0071] S33 disconnects the DC cable of the photovoltaic module and exposes it outside the photovoltaic module;

[0072] S34 places and installs the photovoltaic modules according to the position of the pressure block, and then tightens the pressure block bolts to ensure that the photovoltaic modules are pressed firmly onto the purlin by the pressure block.

[0073] S4 Strictly follow the instructions to install the inverter, and check the cable insulation and check the cable phase sequence and polarity before wiring the AC and DC sides of the inverter;

[0074] 1. Grid-connected photovoltaic (PV) inverters must have anti-islanding protection to detect islanding effects promptly and accurately when a grid fault occurs. If the power supply to the public grid connected to the PV inverter is interrupted, the inverter should stop supplying power to the grid within 2 seconds and simultaneously issue an alarm signal. Islanding detection technology mainly detects changes in the output power of the PV grid-connected inverter caused by grid voltage loss; however, due to the complexity and uncertainty of the power system, misjudgments may occur and should be avoided as much as possible.

[0075] 2. The installation and maintenance of string inverters shall meet the following requirements:

[0076] a) Install the inverter strictly according to the requirements of the instruction manual. During installation, carefully check that the inverter model and specifications are correct; that the inverter's appearance is intact; that the wire diameter meets the requirements; that all components and terminals are not loose during transportation; that the insulation is in good condition; and that the system meets the grounding requirements.

[0077] b) The connection between the inverter and the mounting bracket should be firm and reliable.

[0078] c) Before wiring the AC and DC sides of the inverter, the cable insulation should be checked and the cable phase sequence and polarity should be checked.

[0079] d) The inverter's grounding should be secure, reliable, and have good conductivity.

[0080] e) Inverters must be equipped with a sign that is UV resistant and waterproof. The inverter surface must be cleaned before the sign is installed to ensure that the sign is securely installed.

[0081] f) Strictly follow the instructions in the inverter's user manual for operation and maintenance. Before powering on, check if the input voltage is normal; during operation, check if the power on / off is correct and if the readings of all meters and indicator lights are normal.

[0082] g) The inverter cabinet contains high voltage; operators should generally not open the cabinet door, and the door should be locked at all times. When the room temperature exceeds 30 degrees Celsius, cooling measures should be taken to prevent equipment failure and extend the equipment's service life.

[0083] For S5 cable laying, vertically laid cables or cables inclined at more than 45° should be fixed every 2m, and horizontally laid cables should be fixed every 5 to 10m. Cables should also be fixed at both ends, bends, and joints.

[0084] a) When laying cables, the cables should be led out from the top of the reel and should not be dragged or rubbed on the support or the ground. The cables should not have any mechanical damage that has not been eliminated, such as flattening, twisting, or sheath cracking.

[0085] b) The speed of mechanically laying cables should not exceed 15m / min.

[0086] c) High-voltage and low-voltage power cables, and strong and weak current control cables should be arranged in layers in sequence, generally from top to bottom.

[0087] d) Cable fixing: Vertically laid cables or cables inclined at more than 45° should be fixed every 2m; horizontally laid cables should be fixed every 5-10m, and both ends of the cable, as well as at bends and joints, must be fixed. The fixing clamps or materials for AC single-core power cables should not form a closed magnetic circuit.

[0088] e) Identification signs should be installed promptly after the cables are laid.

[0089] The S6 system was debugged and put into trial operation.

[0090] Second embodiment:

[0091] Please see Figures 4-8 ,in, Figure 4 This is a schematic diagram of the overall structure of the first embodiment of a roof photovoltaic panel construction device of the present invention. Figure 5 yes Figure 4 A magnified view of detail A. Figure 6 This is a structural schematic diagram of the first embodiment of a roof photovoltaic panel construction device of the present invention from another angle. Figure 7 This is a front view of the overall structure of a first embodiment of a roof photovoltaic panel construction device according to the present invention. Figure 8 yes Figure 7 A magnified view of detail B.

[0092] This invention provides a roof photovoltaic panel construction device: including a mobile vehicle 101, two guide rails 102, a lifting frame 103, a tilting frame 104, a lifting assembly 105, a traction assembly 106, four fixing ropes 107, and two fixing clamps 108; the traction assembly 106 includes a mounting frame 109 and a winch 110; the fixing clamps 108 include a first block 111, two sliding rods 112, a second block 113, and a screw 114; the lifting assembly 105 includes a hydraulic cylinder 115, a mounting base 116, two columns 117, two sprockets 118, and two chains 119; the second block 113 includes a block body 120, a limiting block 121, and a friction pad 122.

[0093] In this specific embodiment, the two guide rails 102 are fixedly connected to the mobile vehicle 101 and are located on one side of the mobile vehicle 101 respectively; the lifting frame 103 is slidably connected to the two guide rails 102 and is located on one side of the two guide rails 102 respectively; the tilting frame 104 is rotatably connected to the lifting frame 103 and is located inside the lifting frame 103; the lifting assembly 105 is mounted on the mobile vehicle 101; the traction assembly 106 is mounted on the lifting frame 103; the four fixing ropes 107 are fixedly connected to the tilting frame 104 and are located on one side of the tilting frame 104 respectively; two fixing ropes 107 are fixedly mounted on the top of each fixing clamp 108. Since the bracket for installing the photovoltaic modules is tilted, with one side higher, and the photovoltaic modules are relatively heavy, the main function of the roof photovoltaic panel construction device is to assist in placing the photovoltaic modules onto the bracket, replacing manual handling and reducing workload. The mobile vehicle 101 can move in any convenient direction. Two guide rails 102 are used to slide the lifting frame 103. The lifting frame 103 is driven to rise and fall by the lifting assembly 105. The traction assembly 106 pulls one end of the tilting frame 104. The rotatable connection between the tilting frame 104 and the lifting frame 103 is away from the mobile vehicle 101. Therefore, the tilting frame 104 always has a tendency to tilt and rotate towards the mobile vehicle 101. Figure 4As shown, taking the rotatable connection point between the tilting frame 104 and the lifting frame 103 as the dividing line, the right side of the tilting frame 104 is heavier than the left side, and the tilting frame 104 has a tendency to tilt to the right, but is held in place by the traction component 106; two fixing ropes 107 support a fixing clamp 108, which is used to clamp the photovoltaic module; in use, the two fixing clamps 108 are respectively clamped at both ends of the photovoltaic module, then the lifting frame 103 moves upward, driving the photovoltaic module to a suitable height, and then the traction component 106 pulls the tilting frame 104 upward. On the right side of 4, the tilting frame 104 is tilted, and the photovoltaic module is also tilted by the fixed rope 107, so that the tilt angle of the photovoltaic module is the same as the tilt angle of the support. Then the moving vehicle 101 moves from the side of the support to move the photovoltaic module onto the support for installation. Using the above method, the photovoltaic module can be lifted and tilted so that the tilt angle of the photovoltaic module is the same as that of the support and the height of the photovoltaic module is slightly higher than that of the support. At this time, the photovoltaic module is parallel to the mounting surface of the support. Then the photovoltaic module is moved from the side of the support and placed onto the support, eliminating the need for manual handling and reducing workload.

[0094] The mounting frame 109 is fixedly connected to the lifting frame 103 and located at the top of the lifting frame 103; the winch 110 is fixedly connected to the mounting frame 109 and located on one side of the mounting frame 109; the wire rope of the winch 110 is fixedly connected to the tilting frame 104. The mounting frame 109 is used to mount the winch 110. The wire rope of the winch 110 pulls on the right side of the tilting frame 104. When the wire rope is pulled upward, the tilting frame 104 gradually tilts; when the wire rope is lowered, the tilting frame 104 gradually flattens.

[0095] Secondly, the first block 111 is fixedly connected to the two fixed ropes 107 and located at the bottom of the two fixed ropes 107; the two sliding rods 112 are slidably connected to the first block 111 and pass through the first block 111 respectively; the second block 113 is fixedly connected to the two sliding rods 112 and located inside the first block 111; the screw 114 is rotatably connected to the second block 113 and threadedly connected to the first block 111, and passes through the first block 111. When clamping the photovoltaic module, one end of the photovoltaic module is inserted into the inside of the first block 111, and then the screw 114 is turned to move the second block 113 downward, clamping the photovoltaic module.

[0096] Meanwhile, the hydraulic cylinder 115 is fixedly connected to the mobile vehicle 101 and located on one side of the mobile vehicle 101; the mounting base 116 is fixedly connected to the output end of the hydraulic cylinder 115 and located on top of the hydraulic cylinder 115; the two columns 117 are respectively fixedly connected to the mobile vehicle 101 and located on one side of the mobile vehicle 101; the two sprockets 118 are respectively rotatably connected to the mounting base 116 and located on one side of the mounting base 116; the two chains 119 are respectively fixedly connected to the two columns 117 and respectively fixedly connected to the lifting frame 103, and respectively mesh with the two sprockets 118. The columns 117 are used to fix one end of the chains 119. The hydraulic cylinder 115 drives the mounting base 116 to rise and fall, thereby driving the sprockets 118 to rise and fall. The sprockets 118 rotate, driving the chains 119, and the chains 119 drive the lifting frame 103 to rise and fall.

[0097] In addition, the block 120 is fixedly connected to the two sliding rods 112 respectively and is located inside the first block 111; the limiting block 121 is fixedly connected to the block 120 and is located on one side of the block 120; the friction pad 122 is fixedly connected to the block 120 and is located on one side of the block 120. When the block 120 clamps the photovoltaic module, the limiting block 121 is fastened to the inside of the photovoltaic module frame to prevent it from falling off, and then the friction pad 122 is set to make the clamping stable.

[0098] In this embodiment, a roof photovoltaic panel construction device is used by clamping two fixing clamps 108 at both ends of the photovoltaic module. Then, the lifting frame 103 moves upward, raising the photovoltaic module to a suitable height. Then, the traction component 106 pulls the right side of the tilting frame 104 upward, causing the tilting frame 104 to tilt. The fixing rope 107 also tilts the photovoltaic module, making the tilt angle of the photovoltaic module the same as the tilt angle of the support. Then, the moving vehicle 101 moves from the side of the support to move the photovoltaic module onto the support for installation. Using the above method, the photovoltaic module can be lifted and tilted so that the tilt angle of the photovoltaic module and the support are the same and the height of the photovoltaic module is slightly higher than the support. At this time, the photovoltaic module is parallel to the mounting surface of the support. Then, the photovoltaic module is moved from the side of the support and placed onto the support, eliminating the need for manual handling and reducing labor intensity.

[0099] Third Embodiment

[0100] Based on the second embodiment, please refer to Figure 9 ,in, Figure 9 This is a schematic diagram of the overall structure of a second embodiment of a roof photovoltaic panel construction device of the present invention.

[0101] The roof photovoltaic panel construction device provided by the present invention also includes two sliding seats 201 and two reinforcing ribs 202.

[0102] In this specific embodiment, the two sliding seats 201 are slidably connected to the two guide rails 102 respectively, and are located on one side of the two guide rails 102 respectively; the two reinforcing ribs 202 are fixedly connected to the two sliding seats 201 respectively, and are fixedly connected to the lifting frame 103 respectively, and are located at the bottom of the lifting frame 103 respectively. The sliding seats 201 can slide on the guide rails 102. The left side of the lifting frame 103 is a cantilever, therefore the reinforcing ribs 202 are provided to support the lifting frame 103 from the bottom, making the lifting frame 103 more stable and reliable.

[0103] In this embodiment, a roof photovoltaic panel construction device is described. The sliding seat 201 can slide on the guide rail 102. The left side of the lifting frame 103 is a cantilever, so the reinforcing rib 202 is provided to support the lifting frame 103 from the bottom, making the lifting frame 103 more stable and reliable.

[0104] Fourth embodiment:

[0105] Based on the third embodiment, please refer to Figure 10 ,in, Figure 10 This is a schematic diagram of the overall structure of a third embodiment of a roof photovoltaic panel construction device of the present invention.

[0106] The roof photovoltaic panel construction device provided by the present invention also includes a positioning component 301; the positioning component 301 includes a U-shaped frame 302, two electric push rods 303 and a stop block 304.

[0107] In this specific embodiment, the positioning component 301 is disposed on the top of the lifting frame 103. The positioning component 301 is used to position the rotation angle of the tilting frame 104, thereby positioning the tilt angle of the photovoltaic module being lifted below, and also preventing the tilting frame 104 from tilting to the left and overturning.

[0108] The U-shaped frame 302 is fixedly connected to the lifting frame 103 and located at the top of the lifting frame 103. Two electric push rods 303 are fixedly connected to the U-shaped frame 302 and located on one side of the U-shaped frame 302. A stop block 304 is fixedly connected to the output ends of the two electric push rods 303 and located at the bottom of the two electric push rods 303. The two electric push rods 303 can drive the stop block 304 downwards to limit the tilting frame 104. Upon initial use, after the tilting frame 104 tilts the photovoltaic module to a suitable angle, the electric push rods 303 drive the stop block 304 downwards to make slight contact with the tilting frame 104. Subsequent tilting of the photovoltaic module only requires rotating the tilting frame 104 until it contacts the stop block 304. At this point, the tilt angle of the photovoltaic module is the same as the tilt angle of the previous photovoltaic module. Since the height of the stop block 304 is adjustable, it can accommodate different angle positioning of the tilting frame 104.

[0109] In this embodiment, a roof photovoltaic panel construction device is described. The two electric push rods 303 can drive the stop block 304 to move down and limit the tilting frame 104. When used for the first time, after the tilting frame 104 tilts the photovoltaic module to a suitable angle (that is, the same tilt angle as the support), the electric push rods 303 drive the stop block 304 to move down and make slight contact with the tilting frame 104. When tilting the photovoltaic module in subsequent applications, it is only necessary to rotate the tilting frame 104 to contact the stop block 304. At this time, the tilt angle of the photovoltaic module is the same as the tilt angle of the previous photovoltaic module. Since the height of the stop block 304 can be adjusted, it can adapt to different angle positioning of the tilting frame 104.

[0110] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A construction method for rooftop photovoltaic panels, characterized in that; The specific steps include: Plan the longitudinal and transverse axis positions of the base foundation, and pour an independent base foundation on the roof of the factory building; Clean the roof and install the bracket on the base according to the base foundation layout drawing and the foundation embedded parts; The solar photovoltaic modules are moved onto the support frame one by one and placed according to the position of the pressure block. Then the pressure block is used to press the photovoltaic modules firmly. Install the inverter strictly according to the instructions, and check the cable insulation and verify the cable phase sequence and polarity before wiring the AC and DC sides of the inverter. When laying cables, vertically laid cables or cables inclined at more than 45° should be fixed every 2m, and horizontally laid cables should be fixed every 5 to 10m. Cables should also be fixed at both ends, bends, and joints. System debugging and trial operation; The specific steps of cleaning the roof and installing the bracket on the base foundation according to the base foundation layout drawing and using the foundation embedded parts include: Remove the roof debris from the site and clean the roof thoroughly. Determine the location of each support leg installation point according to the base foundation layout diagram; Connect the column to the foundation embedded parts by finding the holes, and fix it with through bolts after confirming the elevation; Fix the angle steel purlin bracket to the inclined beam with bolts, then connect the hinge to the lower flange of the inclined beam with bolts. Keep all bolts loose. After aligning the holes of the inclined beam hinge and the column connector, connect them with bolts. After checking and confirming, tighten the bolt and keep the other bolts loose. Connect the inclined brace to the inclined beam. Adjust the connection hole positions of the hinge and the inclined brace to the inclined beam to ensure the optimal tilt angle. After confirmation, tighten all bolts to complete the assembly of the inclined beam and connector. Pass the tie rod through the hole in the inclined beam, tension it, use the fan-shaped washer to fit it, and tighten the nut to fix it, thus completing the tie rod installation; Assemble the pressure block onto the purlin using hex bolts according to the position. Pre-assemble the purlin connector onto one side of the purlin using bolts, with all bolts loose. Align the purlin with the holes and connect it to the inclined beam. After confirming the overhang length at both ends, use bolts to fix the purlin to the purlin bracket and tighten all bolts on the purlin bracket. Then tighten all bolts on the connector. Install the round steel tie rod and tighten it with nuts after confirming the position. This completes the assembly and connection of the purlin and pressure block. The specific steps of sequentially transporting the solar photovoltaic modules onto the support frame, placing them according to the positions of the pressure blocks, and then using the pressure blocks to press the photovoltaic modules firmly include: Based on the drawings, determine the installation location of the photovoltaic modules and lay out the lines. Move the photovoltaic modules onto the purlins; Untie the DC cable of the photovoltaic module and expose it outside the photovoltaic module; Place and install the photovoltaic modules according to the positions of the pressure blocks, and then tighten the pressure block bolts to ensure that the photovoltaic modules are pressed firmly onto the purlins by the pressure blocks.

2. A roof photovoltaic panel construction device, applied to the roof photovoltaic panel construction method as described in claim 1, characterized in that, The device includes a mobile cart, two guide rails, a lifting frame, a tilting frame, a lifting assembly, a traction assembly, four fixed ropes, and two fixed clamps. The two guide rails are fixedly connected to the mobile cart and are located on one side of the mobile cart. The lifting frame is slidably connected to the two guide rails and is located on one side of the two guide rails. The tilting frame is rotatably connected to the lifting frame and is located inside the lifting frame. The lifting assembly is mounted on the mobile cart. The traction assembly is mounted on the lifting frame. The four fixed ropes are fixedly connected to the tilting frame and are located on one side of the tilting frame. Two fixed ropes are fixedly mounted on the top of each fixed clamp.

3. The roof photovoltaic panel construction device as described in claim 2, characterized in that, The traction assembly includes a mounting frame and a winch; the mounting frame is fixedly connected to the lifting frame and located on top of the lifting frame; the winch is fixedly connected to the mounting frame and located on one side of the mounting frame; the wire rope of the winch is fixedly connected to the tilting frame.

4. The roof photovoltaic panel construction device as described in claim 3, characterized in that, The fixing clamp includes a first block, two sliding rods, a second block, and a screw; the first block is fixedly connected to the two fixing ropes respectively and is located at the bottom of the two fixing ropes; the two sliding rods are slidably connected to the first block respectively and pass through the first block respectively; the second block is fixedly connected to the two sliding rods respectively and is located inside the first block; the screw is rotatably connected to the second block and threadedly connected to the first block, and passes through the first block.

5. The roof photovoltaic panel construction device as described in claim 4, characterized in that, The roof photovoltaic panel construction device also includes two sliding seats and two reinforcing ribs; the two sliding seats are slidably connected to the two guide rails respectively and are located on one side of the two guide rails respectively; the two reinforcing ribs are fixedly connected to the two sliding seats respectively and are fixedly connected to the lifting frame respectively, and are located at the bottom of the lifting frame respectively.

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