Hoisting tool for overall installation of photovoltaic string and construction method

Abstract

The application relates to a hoisting tool for integral installation of a photovoltaic module string and a construction method, wherein the hoisting tool is used for cooperating with a transfer trolley to complete transportation and angle adjustment of the photovoltaic module string connected by a torque tube, and the hoisting tool comprises a rod body which is a rectangular rod, a lower end of the rod body is inserted and matched with a rectangular hole arranged on the transfer trolley, a U-shaped groove is arranged on an upper portion of the rod body and used for accommodating the torque tube of the photovoltaic module string, an elastic locking mechanism is arranged on a side wall of the U-shaped groove and used for locking or unlocking the torque tube arranged in the U-shaped groove, and a lifting ring is arranged on the rod body and used for being connected with a hoisting device; the hoisting tool of the application integrates the transportation fixing and the hoisting angle adjustment functions; during transportation, the hoisting tool is inserted and matched with the transfer trolley, the torque tube is locked through the U-shaped groove and the elastic locking mechanism, the photovoltaic module string is fixed on the transfer trolley, during hoisting, the hoisting device is connected and the angle of the photovoltaic module string is unlocked and adjusted, the hoisting tool is used throughout the whole transportation and hoisting process, and the construction efficiency is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic construction technology, and specifically to a hoisting tool and construction method for the overall installation of photovoltaic strings. Background Technology

[0002] Currently, photovoltaic power station construction generally adopts the traditional piecemeal construction process. All components, accessories and wiring procedures are completed on-site in industrial control, roof or open areas. This results in frequent high-altitude operations, prominent safety hazards and low construction efficiency. Especially in the construction of large-scale ground photovoltaic power stations, a large number of skilled construction workers are required to install each component at high altitude. The procedures of moving, aligning and fastening individual components are scattered and repetitive. This not only results in long construction cycles, but also poor installation quality consistency, frequent operation and maintenance failures, and high overall construction costs.

[0003] To address the aforementioned issues, existing technologies have attempted methods for hoisting photovoltaic modules as a whole, such as assembling multiple photovoltaic modules into a panel on the ground before hoisting it to the installation location. However, in existing hoisting solutions, the hoisting equipment only performs the function of the hoisting process. The transportation of photovoltaic modules from the pre-assembly area to the installation site still requires the assistance of other equipment or manual handling. During transportation, the modules are prone to collisions and tipping, and the connection between transportation and hoisting is not smooth, still requiring a lot of manual assistance. This approach fails to fundamentally solve the problems of low construction efficiency and the risks of working at heights. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hoisting tool and construction method for the overall installation of photovoltaic strings. This solves the problems in the prior art where the hoisting tool has a single function and the connection between transportation and hoisting is not smooth, resulting in the need to improve construction efficiency and the high complexity of on-site operation.

[0005] To achieve the above objectives, the present invention provides a hoisting fixture for the overall installation of photovoltaic strings, used in conjunction with a transfer trolley to transport and adjust the angle of photovoltaic strings connected by torque tubes. The hoisting fixture is F-shaped and includes: The rod body is a rectangular rod, and its lower end is inserted into a rectangular hole on the transfer trolley. A U-shaped groove is provided on the upper part of the rod to accommodate the torque tube of the photovoltaic string; An elastic locking mechanism is provided on the side wall of the U-shaped groove for locking or unlocking the torque tube placed in the U-shaped groove; A lifting ring, mounted on the rod, is used to connect lifting equipment.

[0006] By adopting this technical solution, the F-shaped integrated design of the hoisting fixture integrates the dual functions of transportation fixation and hoisting angle adjustment. During transportation, the lower end of the hoisting fixture is inserted into the transfer trolley, and the upper end locks the torque tube through a U-shaped groove and elastic locking mechanism, so that the photovoltaic string is stably fixed to the transfer trolley. During hoisting, the hoisting equipment is connected through the lifting ring, and the angle of the photovoltaic string can be unlocked and adjusted. One fixture is used throughout the entire transportation and hoisting process, without the need for replacement or additional auxiliary devices, which significantly improves construction efficiency. At the same time, the insertion and connection of the rectangular rod and the rectangular hole enables quick assembly and disassembly of the hoisting fixture and the transfer trolley, and the F-shaped structure forms a natural height difference and torque balance, ensuring transportation stability and hoisting operation convenience, effectively solving the technical problems of the existing hoisting fixtures having single functions and poor connection between transportation and hoisting links.

[0007] Furthermore, the elastic locking mechanism includes a spring and a pin; The pin extends into the U-shaped groove under the action of the spring to limit the torque tube.

[0008] By adopting this technical solution, the spring force is used to keep the pin inserted into the U-shaped groove, thereby achieving the limit locking of the torque tube and ensuring that the torque tube will not come out during transportation, making the locking reliable. To unlock, the pin only needs to be pulled manually to overcome the spring force, making the operation simple and quick.

[0009] Furthermore, the lifting ring is located directly above the center of gravity of the connected photovoltaic string.

[0010] By adopting this technical solution, the photovoltaic strings can be kept horizontally balanced during hoisting, preventing them from tilting, reducing manual straightening operations, and making it easier for operators to adjust the photovoltaic strings to the installation angle using hand-held hoisting tools.

[0011] Furthermore, the rectangular cross-section at the lower end of the rod is adapted to the rectangular hole cross-section on the transfer trolley; After the lower end of the rod is inserted into the rectangular hole, it maintains an upright posture by its own weight.

[0012] By adopting this technical solution, the quick assembly and disassembly of the lifting fixture on the transfer trolley is achieved through the insertion and connection of the rectangular rod and the rectangular hole, thereby improving the loading and unloading efficiency of the photovoltaic strings. After the lower end of the rod is inserted into the rectangular hole, it can maintain an upright posture solely by its own weight, making the structure simple and reliable. At the same time, the rectangular connection has an anti-rotation function, ensuring that the fixture remains in a fixed direction on the trolley and will not rotate, thus guaranteeing the stability of the photovoltaic strings during transportation. In addition, the upright posture of the rod restricts the posture of the photovoltaic strings during transportation, which can increase the amount of photovoltaic strings that the transfer trolley can carry in a single trip, thereby improving operational efficiency.

[0013] Furthermore, the lifting fixture consists of two sets, each used to connect both ends of the torque tube; The lower ends of the two sets of lifting fixtures are respectively inserted into the two corresponding rectangular holes on the transfer trolley.

[0014] By adopting this technical solution, synchronous bearing, synchronous locking, and synchronous lifting of both ends of the photovoltaic string are achieved. The uniform force distribution prevents the photovoltaic string from bending and deforming during transportation and hoisting. The fixed ends make the photovoltaic string more stable during transportation and prevent it from shaking or tipping over due to bumps.

[0015] This invention also provides a method for the overall installation of photovoltaic strings, using the aforementioned hoisting fixture for the overall installation of photovoltaic strings. The method includes the following steps: S1. Photovoltaic modules are pre-assembled into strings using torque tubes to form photovoltaic strings, and hoisting fixtures are installed at both ends of the torque tubes. S2. Install the hoisting fixture along with the photovoltaic string onto the transfer trolley; S3. The photovoltaic string is transported to the installation site using the transfer trolley. S4. Connect the hoisting equipment to the lifting ring of the hoisting fixture, separate the hoisting fixture from the transfer trolley, and lift the photovoltaic string as a whole; S5. Adjust the angle of the photovoltaic string to the preset installation angle using the hoisting fixture, and place it in the installation position; S6. Complete the fixing of the photovoltaic string and remove the hoisting fixture.

[0016] By adopting this technical solution, the same set of hoisting tools is used throughout the entire process of pre-assembly, transportation, hoisting, angle adjustment and installation. The hoisting tools simultaneously perform the dual functions of transportation fixation and hoisting adjustment, eliminating the need to change tools midway and avoiding the problem of disconnection between transportation and hoisting in traditional methods. Only the hoisting and positioning stage involves high-altitude operations, minimizing the risks of high-altitude operations.

[0017] Furthermore, in step S2, when the hoisting fixture along with the photovoltaic string is installed on the transfer trolley, the photovoltaic string is in an upright state.

[0018] By adopting this technical solution, the photovoltaic strings occupy less width on the transfer trolley, which can increase the amount of photovoltaic strings transported in a single trip, thereby improving transportation efficiency.

[0019] Furthermore, when the installation efficiency of the photovoltaic string is lower than its pre-assembly efficiency, the transport trolley with the photovoltaic string fixed thereon serves as a buffer area for temporarily storing the pre-assembled photovoltaic string.

[0020] By adopting this technical solution, the transport vehicle can be used as a cache while in standby mode, eliminating the need to purchase additional storage devices, thus achieving multiple uses for one vehicle and reducing equipment costs.

[0021] Furthermore, in step S5, when adjusting the angle of the photovoltaic string using hoisting equipment, the photovoltaic string is flipped at a preset installation angle to change its vertical posture from the transportation state to the installation posture.

[0022] By adopting this technical solution, the photovoltaic strings can be flipped at a preset installation angle using hoisting fixtures, which can meet the design requirements and flip the photovoltaic strings to any desired installation angle, making it highly adaptable. The flipping can be completed by hoisting fixtures in conjunction with manual labor, without the need for complicated angle adjustment devices, making the operation simple.

[0023] Furthermore, the connection between adjacent photovoltaic strings is fixed by torque tubes; After the photovoltaic string is fixedly installed, the verticality, horizontality, and tightness of the photovoltaic string are re-inspected.

[0024] By adopting this technical solution, the verticality, horizontality, and tightness of the photovoltaic strings are re-inspected after installation, ensuring that the installation quality of each string meets the design requirements and avoiding problems with the overall array due to accumulated errors.

[0025] Compared with the prior art, the present invention has the following advantages: The F-type integrated hoisting fixture combines transportation fixation and hoisting angle adjustment. During transportation, the lower end of the hoisting fixture plugs into the transfer trolley, while the upper end locks the torque tube via a U-shaped groove and elastic locking mechanism, ensuring the photovoltaic strings are stably fixed to the transfer trolley. During hoisting, the hoisting equipment is connected via lifting rings, which can be unlocked to adjust the angle of the photovoltaic strings. One fixture is used throughout the entire transportation and hoisting process, eliminating the need for mid-process replacement or the addition of auxiliary devices, significantly improving construction efficiency. At the same time, the plug-in connection between the rectangular rod and the rectangular hole enables quick assembly and disassembly of the hoisting fixture and the transfer trolley, and the F-type structure creates a natural height difference and torque balance, ensuring transportation stability and hoisting operation convenience. This effectively solves the technical problems of existing hoisting fixtures having single functions and poor coordination between transportation and hoisting. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the hoisting fixture for the overall installation of photovoltaic strings according to the present invention; Figure 2 This is a schematic diagram of the photovoltaic string structure in this invention; Figure 3 This is a schematic diagram of the transfer trolley structure in this invention; Figure 4 This is a schematic diagram showing the state of the hoisting tool for the overall installation of the photovoltaic string of the present invention installed on the transfer trolley; Figure 5This is a schematic diagram showing the photovoltaic string being installed on a transfer trolley using the hoisting tool for overall installation of the photovoltaic string according to the present invention; Figure 6 This is a schematic diagram of the hoisting fixture and torque tube used for the overall installation of photovoltaic strings according to the present invention. Figure 7 This is a flowchart of the photovoltaic string overall installation construction method of the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1. Lifting fixture; 11. Rod; 12. U-shaped groove; 13. Spring; 14. Pin; 15. Lifting ring; 2. Photovoltaic string; 21. Photovoltaic module; 22. Torque tube; 3. Transfer trolley; 31. Rectangular hole. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] Please refer to the appendix. Figure 1-3 The hoisting fixture 1 for overall installation of photovoltaic strings provided by the present invention is F-shaped and is used in conjunction with the transfer trolley 3 to complete the transportation and angle adjustment of photovoltaic strings 2 connected by torque tube 22.

[0030] The lifting fixture 1 includes a rod 11, a U-shaped groove 12, an elastic locking mechanism, and a lifting ring 15.

[0031] Please refer to the appendix. Figure 3-4 The rod 11 is a rectangular rod, and its lower end is inserted into the rectangular hole 31 on the transfer trolley 3. The rectangular cross section of the lower end of the rod 11 is adapted to the cross section of the rectangular hole 31 on the transfer trolley 3. After the lower end of the rod 11 is inserted into the rectangular hole 31, it maintains an upright posture by its own weight, thereby realizing a detachable connection between the hoisting tool 1 and the transfer trolley 3.

[0032] Please refer to the appendix. Figure 5-6 The U-shaped groove 12 is provided on the upper part of the rod 11 to accommodate the torque tube 22 of the photovoltaic string 2. The torque tube 22 is connected to the photovoltaic module 21 in a string during pre-assembly. The opening direction of the U-shaped groove 12 is perpendicular to or at a certain angle to the extension direction of the rod 11, so that the torque tube 22 placed therein cannot be disengaged in the locked state.

[0033] An elastic locking mechanism is provided on the side wall of the U-shaped groove 12 for locking or unlocking the torque tube 22 placed in the U-shaped groove 12. Specifically, the elastic locking mechanism includes a spring 13 and a pin 14. The pin 14 extends into the U-shaped groove 12 under the action of the spring 13 to limit the torque tube 22. When unlocking is required, the pin 14 is manually pulled to overcome the force of the spring 13, so that the pin 14 is removed from the U-shaped groove 12, and the torque tube 22 can be taken out from the U-shaped groove 12.

[0034] The lifting ring 15 is installed on the pole 11 and is used to connect the lifting equipment. The position of the lifting ring 15 is set directly above the center of gravity of the connected photovoltaic string 2 to ensure that the photovoltaic string 2 remains balanced and does not tilt during lifting.

[0035] To stably support both ends of the photovoltaic string 2, two sets of lifting fixtures 1 are used in this embodiment to connect the two ends of the torque tube 22 respectively; the lower ends of the two sets of lifting fixtures 1 are respectively inserted into the two corresponding rectangular holes 31 on the transfer trolley 3 to realize the synchronous support, locking and lifting of both ends of the photovoltaic string 2.

[0036] It should be noted that the photovoltaic string 2 also includes purlins connecting the photovoltaic modules 21 and clamps for connecting the purlins and the torque tube 22. The photovoltaic modules 21 are connected in strings on the torque tube 22 through the purlins to form the photovoltaic string 2.

[0037] In another preferred embodiment, the rod 11 of the lifting fixture 1 can be any shape of rod with a cross section other than a circle, such as a triangle. Correspondingly, a triangular hole is opened on the transfer trolley 3 to fit it, as long as the lifting fixture 1 can be inserted into the transfer trolley 3 without rotating. Please refer to the appendix. Figure 7 The present invention also provides a method for the overall installation of photovoltaic strings, comprising the following steps: First, the photovoltaic module 21, torque tube 22, and purlin are pre-assembled into a standard photovoltaic string 2 using clamps (e.g., Figure 2 (as shown); then the above-mentioned hoisting fixture 1 is installed at both ends of the torque tube 22.

[0038] Then, as Figure 5 As shown, the photovoltaic string 2, which is equipped with the hoisting fixture 1, is inserted into the rectangular hole 31 on the transfer trolley 3 through the rectangular rod at the lower end of the hoisting fixture 1, so that the photovoltaic string 2 is fixed to the transfer trolley 3 in an upright state.

[0039] The standard photovoltaic string 2 is transported to the installation site using a transfer cart 3.

[0040] Next, the hoisting equipment is connected to the lifting ring 15 of the hoisting fixture 1, and the hoisting fixture 1 is lifted upwards, so that the rectangular rod at the lower end of the hoisting fixture 1 is dislodged from the rectangular hole 31 of the transfer trolley 3, thereby separating the hoisting fixture 1 from the transfer trolley 3, and lifting the photovoltaic string 2 as a whole. Then, by adjusting the angle of the photovoltaic string 2 using the hoisting tool 1, the photovoltaic string 2 is flipped at a preset installation angle, so that it changes from the vertical posture in the transportation state to the installation posture.

[0041] Finally, the photovoltaic string 2 is fixed and the hoisting tool 1 is removed; the verticality, horizontality and tightness of the photovoltaic string 2 are re-inspected, and the construction of the next construction point is carried out after passing the inspection. The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A hoisting fixture for the overall installation of photovoltaic strings, used in conjunction with a transfer trolley to transport and adjust the angle of photovoltaic strings connected by torque tubes, characterized in that, The hoisting fixture is F-shaped overall and includes: The rod body is a rectangular rod, and its lower end is inserted into a rectangular hole on the transfer trolley. A U-shaped groove is provided on the upper part of the rod to accommodate the torque tube of the photovoltaic string; An elastic locking mechanism is provided on the side wall of the U-shaped groove for locking or unlocking the torque tube placed in the U-shaped groove; A lifting ring, mounted on the rod, is used to connect lifting equipment.

2. The hoisting fixture for overall installation of photovoltaic strings according to claim 1, characterized in that, The elastic locking mechanism includes a spring and a pin; The pin extends into the U-shaped groove under the action of the spring to limit the torque tube.

3. The hoisting fixture for overall installation of photovoltaic strings according to claim 1, characterized in that, The lifting ring is located directly above the center of gravity of the connected photovoltaic string.

4. The hoisting fixture for overall installation of photovoltaic strings according to claim 1, characterized in that, The rectangular cross-section at the lower end of the rod is adapted to the rectangular hole cross-section on the transfer trolley; After the lower end of the rod is inserted into the rectangular hole, it maintains an upright posture by its own weight.

5. The hoisting fixture for overall installation of photovoltaic strings according to claim 4, characterized in that, The lifting fixture consists of two sets, which are used to connect the two ends of the torque tube, respectively. The lower ends of the two sets of lifting fixtures are respectively inserted into the two corresponding rectangular holes on the transfer trolley.

6. A method for the overall installation of photovoltaic strings, characterized in that, The construction method, using the hoisting fixture for overall installation of photovoltaic strings as described in any one of claims 1-5, includes the following steps: S1. Photovoltaic modules are pre-assembled into strings using torque tubes to form photovoltaic strings, and hoisting fixtures are installed at both ends of the torque tubes. S2. Install the hoisting fixture along with the photovoltaic string onto the transfer trolley; S3. The photovoltaic string is transported to the installation site using the transfer trolley. S4. Connect the hoisting equipment to the lifting ring of the hoisting fixture, separate the hoisting fixture from the transfer trolley, and lift the photovoltaic string as a whole; S5. Adjust the angle of the photovoltaic string to the preset installation angle using the hoisting fixture, and place it in the installation position; S6. Complete the fixing of the photovoltaic string and remove the hoisting fixture.

7. The photovoltaic string overall installation construction method according to claim 6, characterized in that, In step S2, when the hoisting fixture and photovoltaic string are installed on the transfer trolley, the photovoltaic string is in an upright position.

8. The photovoltaic string overall installation construction method according to claim 6, characterized in that, When the installation efficiency of the photovoltaic string is lower than its pre-assembly efficiency, the transport trolley with the photovoltaic string fixed thereon serves as a buffer area for temporarily storing the pre-assembled photovoltaic string.

9. The photovoltaic string overall installation construction method according to claim 6, characterized in that, In step S5, when adjusting the angle of the photovoltaic string using hoisting equipment, the photovoltaic string is flipped at a preset installation angle to change its posture from the vertical position during transportation to the installation position.

10. The photovoltaic string overall installation construction method according to claim 6, characterized in that, The connection between adjacent photovoltaic strings is fixed by torque tubes; After the photovoltaic string is fixedly installed, the verticality, horizontality, and tightness of the photovoltaic string are re-inspected.

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