An automatic unhooking device for offshore photovoltaic platform

Abstract

The utility model provides a kind of offshore photovoltaic platform automatic unhooking device, belong to photovoltaic installation technical field.The device integrates automatic unhooking, weighing and remote control function, the device adopts the hook made of 30Cr2Ni2Mo high-strength alloy steel material, rated load capacity reaches 5 tons, the automatic suction of the lifting ring on the hoisted article is realized by strong magnet and loosens, and equipped with servo motor drive speed reduction gear transmission device to realize accurate unhooking.The built-in load cell can monitor load in real time, support remote control operation within 100 meters, avoid artificial close high-risk area.The modular design of device is convenient for maintenance, and rechargeable lithium battery supports 5000 times opening and closing cycle or 250 hours standby.The device has anti-splashing characteristics, suitable for harsh marine environment, significantly improves construction safety and efficiency, solves the risk and efficiency bottleneck of traditional manual operation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic installation technology, and in particular to an automatic unhooking device for offshore photovoltaic platforms. Background Technology

[0002] During the construction of offshore photovoltaic power plants, the installation of photovoltaic platforms requires hoisting and positioning heavy components such as photovoltaic panels and structural supports onto steel pipe pile foundations. This process is carried out in harsh marine environments with waves, wind, and limited operating space, placing extremely high demands on the reliability and operational efficiency of the equipment. Traditional hoisting devices rely on manual operation, requiring construction personnel to manually release the hooks close to the load point, posing significant safety hazards, especially on unstable platforms or under splash conditions.

[0003] Furthermore, manual unhooking and weighing operations are time-consuming and labor-intensive, making them unsuitable for the installation of large-load photovoltaic platforms. Existing hook solutions lack automation, weighing, and remote control functions, failing to effectively cope with the complex marine environment. To address these issues, there is an urgent need for a device that integrates automatic unhooking, weighing, and remote control functions to improve construction safety and efficiency. Utility Model Content

[0004] In view of this, the present invention aims to provide an automatic unhooking device for offshore photovoltaic platforms, which combines strong magnets, motor drive and reduction gear transmission technology. It is used in the installation process of offshore photovoltaic platforms to achieve safe and efficient load weighing, suction of lifting rings on the hoisted items and remote automatic unhooking. The device can operate in harsh marine environments, effectively freeing up manpower and improving construction safety.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: an automatic unhooking device for an offshore photovoltaic platform includes a main frame, a control unit, a reduction gear transmission device, a servo motor, a hook, and a lifting ring assembly. The upper end of the hook is connected to the main frame via an optical shaft. Limiting rings are installed in the through holes on both sides of the main frame and in the optical shaft connection holes. The control unit, the reduction gear transmission device, and the servo motor are respectively set inside the main frame. The lifting ring assembly is rotatably connected to the upper end of the main frame. The reduction gear transmission device includes a bearing assembly, a clutch, a gear fixing shaft, and a first gear. A servo motor is mounted on the main frame, and the output shaft of the servo motor is connected to the bearing assembly. The rear side of the first gear meshes with the third gear on the bearing assembly, and the lower side of the first gear meshes with the fourth gear located at the upper end of the hook. The first gear and the gear fixing shaft are coaxially connected and fixed to the main frame through the gear fixing shaft. The front end of the first gear is connected to the input end of the clutch.

[0006] Furthermore, the lower end of the hook is rotatably connected to an anti-detachment plate, which is connected to the hook via a pin. A return spring is fitted on the pin, and the return spring is positioned between the hook and the anti-detachment plate via two pins. A bushing and a second shaft retaining ring are installed in the hinge hole connecting the hook and the pin.

[0007] Furthermore, the bearing assembly includes a ball bearing, a bearing housing, and a third gear. The bearing housing is embedded and fixed on the side wall of the main frame. One end of the bearing housing has a ball bearing embedded in it, and the other end has a third gear. One end of the third gear has a connecting shaft. The connecting shaft of the third gear passes through the bearing housing and the ball bearing in sequence, and is then fixed to the inner ring of the ball bearing by an internal hex bolt. The other end of the third gear has a connecting hole, which is connected to the output shaft of the servo motor. When the output shaft of the servo motor rotates, the output shaft of the servo motor can drive the third gear to rotate.

[0008] The bearing assembly includes a bearing, a connecting part, and a third gear. One end of the connecting part is rotatably connected to the bearing, and the other end extends out of the bearing and is fixedly connected to the end face of the third gear. The end face of the connecting part near the servo motor is recessed inward and has a groove structure that matches the output shaft of the servo motor. When the output shaft of the servo motor rotates, the output shaft of the servo motor can drive the connecting part and the third gear to rotate in sequence.

[0009] Furthermore, the control unit includes a patch button, a control circuit board, a battery, and a remote control. The patch button is mounted on the main frame. The control circuit board is electrically connected to the patch button, the battery, and the servo motor. The control circuit board is equipped with a wireless communication module, and the control circuit board is wirelessly connected to the remote control through the wireless communication module.

[0010] Furthermore, the clutch includes a mounting base, a fifth gear, and an angle sensor. The fifth gear meshes with the first gear. One end of the fifth gear is provided with a mounting base, and the other end is provided with an angle sensor. The angle sensor and the control circuit board are connected via a signal cable. A connecting shaft is provided at the central shaft position of the fifth gear, and the fifth gear is connected to the input shaft of the angle sensor via the connecting shaft.

[0011] Furthermore, a rubber sealing ring and a bearing assembly end cap are sequentially provided at the end of the bearing assembly away from the servo motor, and the bearing assembly end cap can be detachably installed on the main frame.

[0012] Furthermore, a load cell is installed inside the lifting ring assembly, and a wireless antenna is mounted on the lifting ring assembly. The load cell is connected to a handheld weighing display via the wireless antenna; the maximum range of the load cell is 5 tons.

[0013] Furthermore, a strong magnet is installed at the lower end of the main frame. The strong magnet adopts a symmetrical magnetic pole design. During hoisting operations, after the strong magnet comes into contact with the lifting ring on the hoisted item, the lifting ring on the hoisted item can automatically align itself due to the symmetrical characteristics and uniform strength of the strong magnet.

[0014] Furthermore, a right dustproof plate and a left dustproof plate are respectively installed on the two side walls of the main frame, and an arc-shaped sleeve hole is provided at the lower end of the right dustproof plate; a buffer pad is installed on the side wall of the top plate of the main frame.

[0015] Furthermore, the battery is a rechargeable lithium battery, which, when fully charged, supports 5,000 hook opening and closing cycles or 250 hours of standby time.

[0016] Compared with existing technologies, the automatic unhooking device for offshore photovoltaic platforms described in this utility model has the following advantages: (1) The automatic unhooking device of this utility model uses a strong magnet to attract and release the lifting ring on the hoisted item, and combines a servo motor and a reduction gear transmission device to achieve automatic unhooking, thus eliminating the safety risks of manual operation; (2) The automatic unhooking device of this utility model has a built-in weighing function, which facilitates real-time monitoring of the load status and ensures construction safety; (3) The automatic unhooking device of this utility model supports remote control operation within a maximum range of 100 meters and can resist wave splash, making it suitable for marine environments and effectively improving operational flexibility and efficiency; (4) The automatic unhooking device of this utility model uses a hook made of 30Cr2Ni2Mo high-strength alloy steel to ensure a 5-ton load capacity. The modular design facilitates transportation and maintenance, and the anti-splash capability ensures durability in harsh marine environments. (5) The rechargeable lithium battery of the automatic unhooking device described in this utility model supports up to 5,000 opening and closing cycles or 250 hours of standby time, meeting the needs of long-term operation at sea. Attached Figure Description

[0017] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the structure of an automatic unhooking device for an offshore photovoltaic platform according to an embodiment of the present invention; Figure 2 This is an exploded view of an automatic unhooking device for an offshore photovoltaic platform according to an embodiment of this utility model; Figure 3 This is a schematic diagram of the bearing assembly described in an embodiment of the present utility model (right front view). Figure 4 This is a structural schematic diagram of the bearing assembly described in an embodiment of the present utility model (right rear view). Figure 5 This is a schematic diagram of the clutch structure described in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the hook described in an embodiment of the present utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Main frame; 2. First locating pin; 3. Second locating pin; 4. Step locating pin; 5. Patch button; 7. Control circuit board; 8. Battery box; 9. Battery; 10. Bearing assembly; 101. Bearing housing; 102. Ball bearing; 103. Third gear; 11. Clutch; 111. Mounting base; 112. Fifth gear; 113. Angle sensor; 12. Gear fixing shaft; 13. Servo motor; 14. First gear; 15. Optical axis; 16. Lifting lug bolt; 17. Lifting lug nut; 18. First washer; 19. Rubber sealing ring; 20. Bearing assembly end cover; 21. Second washer; 22. Adjusting washer; 23. Limiting retaining ring; 24. Strong magnet; 25. Buffer pad; 26. Right dustproof plate; 27. Left dustproof plate; 28. Arc-shaped sleeve hole; 29. ​​Front baffle; 30. Hook; 301. Fourth gear; 31. Bushing; 32. Return spring; 33. Anti-detachment plate; 34. First shaft retaining ring; 35. Thrust needle roller bearing; 36. Coil pin; 37. Lifting ring assembly; 38. Shaft pin; 39. Second shaft retaining ring; 40. Wireless antenna. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-6As shown, this utility model relates to an automatic unhooking device for offshore photovoltaic platforms, specifically an automatic unhooking device for the installation of offshore photovoltaic platforms. It features weighing, long-distance remote control, suction of lifting rings from the hoisted items, and automatic unhooking functions, aiming to improve construction safety and efficiency. The automatic unhooking device has an overall height of 498 mm, a width of 170 mm, a thickness of approximately 194 mm, a net weight of approximately 26 kg, and a load-bearing capacity of 5 tons. The hook 30 of the unhooking device of this utility model is made of 30Cr2Ni2Mo high-strength alloy steel forging. Equipped with a strong magnet, it can attract and release the lifting ring on the hoisted item. With the servo motor 13 and reduction gear transmission device, it can achieve automatic unhooking. The servo motor 13 drives the hook 30 to rotate through the reduction gear transmission device to achieve automatic opening and closing. The lithium battery configured in the device can be fully charged in 3.5 hours. After being fully charged, it supports 5000 opening and closing cycles of the hook 30 or 250 hours of standby time. In addition, the device supports remote control operation within a maximum range of 100 meters and can resist wave splashes, making it suitable for marine environments. The hook 30 can be automatically opened and closed within a maximum range of 100 meters via remote control. Specifically, the automatic unhooking device includes a main frame 1, a control unit, a reduction gear transmission device, a servo motor 13, a hook 30, and a lifting ring assembly 37. The upper end of the hook 30 is connected to the main frame 1 via an optical shaft 15. Limiting rings 23 are installed in the through holes connecting the main frame 1 and the optical shaft 15 on both sides. The lower end of the hook 30 is rotatably connected to an anti-detachment plate 33, which is connected to the hook 30 via a pin 38. A return spring 32 is fitted onto the pin 38, and the return spring 32 is positioned between the hook 30 and the anti-detachment plate 33 via two pins. The spring 32 consists of a spring section with two pins attached to both ends of the spring. The pins are at a certain angle to each other. When the anti-detachment plate 33 is rotated under force, the two pins of the return spring 32 will bear a certain amount of compressive force to store energy. This allows the return spring 32 to generate a certain reverse force during the reset process. When the external force applied to the anti-detachment plate 33 disappears, the return spring 32 resets and simultaneously drives the anti-detachment plate 33 to rotate, thus achieving the reset function of the anti-detachment plate 33. Since the return spring 32 is existing technology, it will not be described in detail here. A bushing 31 and a second shaft retaining ring 39 are installed in the hinge hole connecting the hook 30 and the shaft pin 38. The second shaft retaining ring 39 is used to limit the two ends of the shaft pin 38, and the bushing 31 is used for oil-free lubrication of the shaft pin 38.

[0022] The control unit, reduction gear transmission device, and servo motor 13 are respectively installed inside the main frame 1. The lifting ring assembly 37 is rotatably connected to the upper end of the main frame 1. Preferably, the lifting ring assembly 37 is connected to the main frame 1 by lifting lug bolts 16. Specifically, the lifting lug bolts 16 are located below the top plate of the main frame 1 and are connected to the main frame 1 by a first positioning pin 2. The first positioning pin 2 can position the lifting lug bolts 16 and the main frame 1, and play a positioning and installation role. One end of the lifting lug bolt 16 passes through the first washer 18, adjusting washer, second washer 21, adjusting washer 22, thrust needle roller bearing 35, and the top plate of the main frame 1 in sequence, and then is threadedly connected to the lifting ring assembly 37. The thrust needle roller bearing 35 is located below the top plate of the main frame 1 and contacts the end face of the top plate of the main frame 1. A lifting lug nut 17 is also sleeved on the end of the lifting lug bolt 16 near the lifting ring assembly 37 for locking and fixing the lifting ring assembly 37. In practical applications, a coiled pin 36 is also horizontally installed on the lifting lug nut 17. Specifically, both the lifting lug nut 17 and the lifting lug bolt 16 are provided with a radial hole. When the lifting lug nut 17 is tightened onto the lifting lug bolt 16, after it is tightened to a certain position and the radial holes on the lifting lug nut 17 and the lifting lug bolt 16 are aligned concentrically, the coiled pin 36 passes through the radial holes on the lifting lug nut 17 and the lifting lug bolt 16, mainly to prevent the lifting lug nut 17 from loosening. The reduction gear transmission device includes a bearing assembly 10, a clutch 11, a gear fixing shaft 12, and a first gear 14. A servo motor 13 is mounted on the main frame 1, and the output shaft of the servo motor 13 is connected to the bearing assembly 10. The rear side of the first gear 14 meshes with the third gear 103 on the bearing assembly 10, and the lower side of the first gear 14 meshes with the fourth gear 301 provided at the upper end of the hook 30. The first gear 14 and the gear fixing shaft 12 are coaxially connected and fixed to the main frame 1 by the gear fixing shaft 12. The front end of the first gear 14 is connected to the input end of the clutch 11. In actual application, the gear fixing shaft 12 and the first gear 14 are positioned and connected by a stepped positioning pin 4. The clutch 11 includes a mounting base 111, a fifth gear 112, and an angle sensor 113. One end of the gear fixing shaft 12 away from the main frame 1 passes through the connecting through hole on the mounting base 111 and is connected to the mounting base 111. The front end of the first gear 14 meshes with the fifth gear 112. One end of the fifth gear 112 is provided with the mounting base 111, and the other end is provided with the angle sensor 113. At the same time, the angle sensor 113 and the control circuit board 7 are connected through a signal cable. A connecting shaft is provided at the central shaft position of the fifth gear 112, and the fifth gear 112 is connected to the input shaft of the angle sensor 113 through the connecting shaft.When the fifth gear 112 rotates, it drives the angle sensor 113 to work. When the fifth gear 112 drives the angle sensor 113 to rotate to a set angle, it triggers the angle sensor 113. Then, the angle sensor 113 transmits a signal to the control circuit board 7. Subsequently, the control circuit board 7 controls the servo motor 13 to shut off, thereby preventing the hook 30 from still being powered when it reaches the maximum opening and closing angle, thus avoiding excessive load. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first," "second," etc., can explicitly or implicitly include one or more of those features. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] When the servo motor 13 is working, the output shaft of the servo motor 13 drives the third gear 103 to rotate, and the third gear 103 drives the first gear 14 to rotate. Since the first gear 14 not only meshes with the fourth gear 301 provided at the upper end of the hook 30, but also meshes with the fifth gear 112 provided on the clutch 11, when the first gear 14 rotates, it will not only drive the fourth gear 301 to rotate, thereby realizing the rotation of the hook 30, but also the fifth gear 112 will rotate when the first gear 14 rotates.

[0024] In practical applications, the servo motor 13 and the reduction gear transmission device are integrated into the main frame 1 of the device, driving the hook 30 to rotate to achieve automatic opening and closing. The transmission device ensures smooth operation and is suitable for dynamic marine environments, effectively ensuring the accuracy and stability of automatic unhooking operation.

[0025] A strong magnet 24 is installed at the lower end of the main frame 1. The strong magnet 24 adopts a symmetrical magnetic pole design, which ensures that the magnetic field strength is uniformly distributed and consistent. During hoisting operations, after the strong magnet 24 comes into contact with the lifting ring on the hoisted item, the lifting ring on the hoisted item can automatically align itself due to the symmetrical and uniform strength characteristics of the strong magnet 24. This facilitates the hook 30 to pass through the lifting ring on the hoisted item when opening and closing, effectively enhancing the reliability and flexibility of load engagement.

[0026] The bearing assembly 10 includes a ball bearing 102, a bearing housing 101, and a third gear 103. The bearing housing 101 is embedded and fixed to the side wall of the main frame 1. One end of the bearing housing 101 has the ball bearing 102 embedded in it, and the other end has the third gear 103. One end of the third gear 103 has a connecting shaft that passes through the bearing housing 101 and the ball bearing 102 in sequence, and is then fixed to the inner ring of the ball bearing 102 by an internal hex bolt. The other end of the third gear 103 has a connecting hole that connects to the output shaft of the servo motor 13. When the output shaft of the servo motor 13 rotates, it drives the third gear 103 to rotate. A rubber sealing ring 19 and a bearing assembly end cap 20 are sequentially provided at the end of the bearing assembly 10 away from the servo motor 13. The bearing assembly end cap 20 is detachably mounted on the main frame 1. The rubber sealing ring 19 provides a dustproof seal, and the bearing assembly end cap 20 further seals the bearing assembly 10 tightly. In practical applications, the bearing end cover is connected to the main frame 1 through the second positioning pin 3, that is, the bearing end cover is installed and positioned through the second positioning pin 3.

[0027] The control unit includes a patch button 5, a control circuit board 7, a battery 9, and a remote control. The patch button 5 is mounted on the main frame 1, and a battery box 8 is embedded in the main frame 1. The battery 9 is detachably inserted into the battery box 8, and the bottom of the battery 9 and the bottom of the battery box 8 are connected by positive and negative copper plates. The control circuit board 7 is installed inside the main frame 1 and sealed with a front baffle 29. The circuit board is electrically connected to the positive and negative terminals of the battery box 8, as well as to the servo motor 13 and the patch button 5. The control circuit board 7 can control the start and stop of the servo motor 13. The control circuit board 7 is equipped with a wireless communication module, which wirelessly connects the control circuit board 7 to the remote control. The remote control supports remote operation within a maximum range of 100 meters. The automatic unhooking device can be remotely controlled via a handheld remote control to control the state of the strong magnet 24, thereby controlling the opening or closing of the hook 30. The battery 9 is a rechargeable lithium battery that can be fully charged in 3.5 hours. After a full charge, the battery 9 supports 5000 opening and closing cycles of the hook 30 or 250 hours of standby time.

[0028] The control unit also includes a load cell embedded in the lifting ring assembly 37, on which a wireless antenna 40 is mounted. The load cell connects to a handheld weighing display via the wireless antenna 40. The load cell has a maximum weighing range of 5 tons and can monitor the load weight in real time, assisting in safety management and facilitating construction safety management. The load cell has its own battery and wireless transmission module, powered by a separate charger, and its usage time on a single charge exceeds the requirements of the entire machine.

[0029] In practical applications, the automatic unhooking device adopts a modular design, including a removable lithium battery, a remote control, and the main body of the automatic unhooking device. The device body is lightweight, which not only facilitates transportation and maintenance, but also resists wave splashes, making it suitable for harsh marine environments.

[0030] A right dustproof plate 26 and a left dustproof plate 27 are respectively installed on the two side walls of the main frame 1. The lower end of the right dustproof plate 26 is provided with an arc-shaped sleeve hole 28, which is used to extend the wireless transmission antenna of the control circuit board 7. A buffer pad 25 is installed on the side wall of the top plate of the main frame 1.

[0031] In practical applications, the automatic unhooking device needs to be tested before deployment to ensure the reliability of its weighing, lifting, and unhooking functions. After passing the test, it is used for installation on offshore photovoltaic platforms, and its wave-resistant design ensures stable operation.

[0032] The assembly process of the automatic uncoupling device for the photovoltaic platform is as follows: Installation of hook 30 and strong magnet 24: The high-strength hook 30 is made of 30Cr2Ni2Mo alloy steel forging and is located at the bottom of the automatic unhooking device. The strong magnet 24 is installed at the bottom of the main frame 1.

[0033] Motor and transmission configuration: The servo motor 13 and the reduction gear transmission are integrated into the main body of the device, driving the hook 30 to rotate and achieve automatic opening and closing. The transmission device ensures smooth operation and is suitable for dynamic marine environments.

[0034] Control circuit board 7 and battery 9 setup: The control module is powered by a rechargeable lithium battery, integrates a weighing sensor, and has a maximum capacity of 5 tons. The lithium battery can be fully charged in 3.5 hours and supports 5000 opening and closing cycles or 250 hours of standby time.

[0035] Remote control system pairing: The handheld remote control is paired with the control module, supporting wireless operation within a maximum range of 100 meters, allowing remote control of the hook 30 and the strong magnet 24 status.

[0036] Testing and Deployment: The device is tested before deployment to ensure reliable weighing, lifting, and unhooking functions. After passing the tests, it is used for installation on offshore photovoltaic platforms, and its wave-resistant design ensures stable operation.

[0037] The automatic unhooking device of this utility model has the following operational characteristics: Weighing function: Built-in sensors monitor the load weight in real time, with a maximum capacity of 5 tons, to assist in safety management.

[0038] Lifting: After the strong magnet 24 comes into contact with the lifting ring on the object being lifted, the ring automatically aligns itself due to the symmetrical and uniform strength of the magnet 24, maintaining its orientation consistent with the magnet 24. This means the ring and hook 30 are positioned at approximately 90°, facilitating easy passage of the hook 30 through the ring during opening and closing. The strong magnet 24 uses magnetic force to lift the ring from the object, offering flexible operation.

[0039] Automatic unhooking: Servo motor 13 drives the reduction gear transmission device to make hook 30 rotate to achieve automatic opening and closing.

[0040] Remote control: The handheld remote control supports operation within a 100-meter range, ensuring that construction personnel can operate from a safe distance, effectively improving safety.

[0041] Splash resistance: The automatic unhooking device is resistant to sea splashes and can ensure reliability in harsh environments.

[0042] Modular design: Frequently maintained components can be easily disassembled. The automatic unhooking device has an overall height of 498 mm, a width of 170 mm, a thickness of approximately 194 mm, and an overall net weight of approximately 26 kg, making it easy to transport and install.

[0043] In the installation of offshore photovoltaic platforms, the automatic unhooking device described in this utility model is installed on a crane. A strong magnet 24 attracts the lifting rings on the object being lifted, engaging the photovoltaic component (such as a panel or support). A load cell monitors the load (maximum 5 tons). After being lifted to the designated position, a remote control rotates the hook 30 to release the load, eliminating the need for manual intervention. The entire process is efficient and safe, and the device operates stably even in wave-splashed environments. The crane and photovoltaic component are existing technologies. In summary, this utility model offers a simple assembly and operation for the automatic unhooking device on photovoltaic platforms. Combining weighing, lifting, and automatic unhooking functions, it effectively saves manpower and improves construction efficiency. The automatic unhooking device, through remote control and modular design, effectively ensures operational safety and convenience, demonstrating high reliability and practicality. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic unhooking device for an offshore photovoltaic platform, characterized in that: The system includes a main frame (1), a control unit, a reduction gear transmission device, a servo motor (13), a hook (30), and a lifting ring assembly (37). The upper end of the hook (30) is connected to the main frame (1) via an optical shaft (15). Limiting rings (23) are installed on both sides of the main frame (1) and in the through holes connected to the optical shaft (15). The control unit, the reduction gear transmission device, and the servo motor (13) are respectively set inside the main frame (1). The lifting ring assembly (37) is rotatably connected to the upper end of the main frame (1). The reduction gear transmission device includes a bearing assembly (10), a clutch (11), a gear fixing shaft (12), and a first gear (14). A servo motor (13) is mounted on the main frame (1), and the output shaft of the servo motor (13) is connected to the bearing assembly (10). The rear side of the first gear (14) meshes with the third gear (103) on the bearing assembly (10), and the lower side of the first gear (14) meshes with the fourth gear (301) set at the upper end of the hook (30). The first gear (14) and the gear fixing shaft (12) are coaxially connected and fixed to the main frame (1) through the gear fixing shaft (12). The front end of the first gear (14) is connected to the input end of the clutch (11).

2. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: The lower end of the hook (30) is rotatably connected to an anti-detachment plate (33). The anti-detachment plate (33) is connected to the hook (30) via a pin (38). A return spring (32) is fitted on the pin (38). The return spring (32) is positioned between the hook (30) and the anti-detachment plate (33) via two pins. A bushing (31) and a second shaft retaining ring (39) are installed in the hinge hole connecting the hook (30) and the pin (38).

3. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: The bearing assembly (10) includes a ball bearing (102), a bearing housing (101), and a third gear (103). The bearing housing (101) is embedded and fixed on the side wall of the main frame (1). One end of the bearing housing (101) is inlaid with a ball bearing (102), and the other end is provided with a third gear (103). One end of the third gear (103) is provided with a connecting shaft. The connecting shaft of the third gear (103) passes through the bearing housing (101) and the ball bearing (102) in sequence, and is then fixed to the inner ring of the ball bearing (102) by an internal hex bolt. The other end of the third gear (103) is provided with a connecting hole, which is connected to the output shaft of the servo motor (13). When the output shaft of the servo motor (13) rotates, the output shaft of the servo motor (13) can drive the third gear (103) to rotate.

4. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: The control unit includes a patch button (5), a control circuit board (7), a battery (9), and a remote control. The patch button (5) is mounted on the main frame (1). The control circuit board (7) is electrically connected to the patch button (5), the battery (9), and the servo motor (13). The control circuit board (7) is equipped with a wireless communication module, and the control circuit board (7) is wirelessly connected to the remote control through the wireless communication module.

5. The automatic unhooking device of a marine photovoltaic platform according to claim 1, characterized in that: The clutch (11) includes a mounting base (111), a fifth gear (112), and an angle sensor (113). The fifth gear (112) meshes with the first gear (14). One end of the fifth gear (112) is provided with a mounting base (111), and the other end is provided with an angle sensor (113). At the same time, the angle sensor (113) and the control circuit board (7) are connected by a signal cable. A connecting shaft is provided at the central shaft position of the fifth gear (112). The fifth gear (112) is connected to the input shaft of the angle sensor (113) through the connecting shaft.

6. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: A rubber sealing ring (19) and a bearing assembly end cap (20) are sequentially provided at the end of the bearing assembly (10) away from the servo motor (13), and the bearing assembly end cap (20) is detachably installed on the main frame (1).

7. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: A load cell is installed inside the lifting ring assembly (37), and a wireless antenna (40) is installed on the lifting ring assembly (37). The load cell is connected to a handheld weighing display via the wireless antenna (40). The maximum range of the load cell is 5 tons.

8. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: A strong magnet (24) is installed at the lower end of the main frame (1). The strong magnet (24) adopts a symmetrical magnetic pole design. During hoisting operations, after the strong magnet (24) comes into contact with the lifting ring on the hoisted item, the lifting ring on the hoisted item can automatically straighten due to the symmetrical characteristics and uniform strength of the strong magnet (24).

9. The automatic unhooking device for an offshore photovoltaic platform according to claim 1, characterized in that: The right dustproof plate (26) and the left dustproof plate (27) are respectively installed on the two side walls of the main frame (1). The lower end of the right dustproof plate (26) is provided with an arc-shaped sleeve hole (28); the side wall of the top plate of the main frame (1) is equipped with a buffer pad (25).

10. The automatic unhooking device of a marine photovoltaic platform according to claim 4, characterized in that: The battery (9) is a rechargeable lithium battery, which supports 5,000 cycles of opening and closing of the hook (30) or 250 hours of standby time when fully charged.

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