Offshore photovoltaic net rack hoisting structure
By combining a lifting frame with four truss structures and fixed and movable lifting devices, the problems of complex operation and low efficiency of traditional lifting methods in offshore photovoltaic power plants are solved, and the stability and safety of the lifting process are improved.
Patent Information
- Application Number
- CN202520144186.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Traditional hoisting methods are complex, inefficient, and unsafe in offshore photovoltaic power plants, making them unsuitable for large-scale construction needs.
The hoisting frame, which adopts a four-truss combination design, combines fixed and movable lifting tools to improve stability and safety by evenly distributing the hoisting force, and allows for flexible adjustment of the photovoltaic grid angle.
It simplifies the operation process, improves hoisting efficiency and safety, adapts to complex marine environments, and meets different installation needs.
Smart Images
Figure CN223852051U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of offshore photovoltaic technology, in particular to a kind of offshore photovoltaic net rack hoisting structure. BACKGROUND
[0002] With the increasing demand for renewable energy worldwide, the construction scale of offshore photovoltaic power station is increasing. However, the complex and changeable offshore environment puts high requirements on the hoisting operation of photovoltaic net rack. The traditional hoisting method often has problems such as complex operation, low efficiency and insufficient safety, which is difficult to meet the needs of large-scale offshore photovoltaic power station construction. Therefore, it is particularly important to develop a new type of offshore photovoltaic net rack hoisting structure.
[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL
[0004] The present disclosure provides a kind of offshore photovoltaic net rack hoisting structure, which can improve hoisting efficiency and hoisting safety.
[0005] According to one aspect of the present disclosure, a kind of offshore photovoltaic net rack hoisting structure is provided for hoisting photovoltaic net rack, characterized by comprising:
[0006] The hoisting frame comprises a first truss, a second truss, a third truss and a fourth truss, the first truss and the second truss are parallelly distributed, the lengths of the first truss and the second truss are equal and the two ends are flush respectively, the third truss and the fourth truss are parallelly distributed, the lengths of the third truss and the fourth truss are equal and the two ends are flush respectively; the third truss and the fourth truss are connected between the first truss and the second truss; the first truss and the third truss are vertically distributed;
[0007] The first fork structure comprises four lifting bars, one end of each of the four lifting bars is connected to a corner portion in the hoisting frame, and the other end of each of the four lifting bars is connected to the same fixed point;
[0008] The second fork structure is connected to the side of the hoisting frame away from the first fork structure, the second fork structure comprises two fixed lifting devices and two movable lifting devices, the two fixed lifting devices and the two movable lifting devices are respectively arranged opposite to different lifting bars; in the direction parallel to the hoisting frame, the two fixed lifting devices are connected to the same side of the hoisting frame, and the two movable lifting devices are connected to the same side of the hoisting frame, the fixed lifting devices and the movable lifting devices are used to connect the photovoltaic net rack, and lifting the movable lifting devices can adjust the included angle between the photovoltaic net rack and the sea surface.
[0009] In an exemplary embodiment of the present disclosure, the hanging bar, the fixed lifting appliance and the movable lifting appliance are detachably connected with the hoisting frame.
[0010] In an exemplary embodiment of the present disclosure, the movable lifting appliance comprises a connecting part, a balance beam, a winding drum, a movable pulley and a steel rope, one end of the connecting part is connected with an end of the hoisting frame, a middle part of the balance beam is connected with an end of the connecting part away from the hoisting frame, the winding drum is arranged at one end of the balance beam, one end of the steel rope is wound and fixed on the winding drum, and the other end is connected with the other end of the balance beam after passing through the movable pulley; the winding drum can wind and unwind the steel rope, and the movable pulley is provided with a first connecting piece, and the first connecting piece is connected with the photovoltaic net rack.
[0011] In an exemplary embodiment of the present disclosure, the hoisting structure further comprises four connecting ears, the four connecting ears are respectively arranged at two ends of the first truss and two ends of the second truss, and are located on a side of the hoisting frame away from the first lifting fork structure; two connecting parts in two movable lifting appliances are respectively connected with different connecting ears.
[0012] In an exemplary embodiment of the present disclosure, the fixed lifting appliance comprises a steel wire rope and a second connecting piece located at one end of the steel wire rope, an end of the steel wire rope away from the second connecting piece is connected with the hoisting frame, and the second connecting piece is connected with the photovoltaic net rack.
[0013] In an exemplary embodiment of the present disclosure, the first connecting piece and the second connecting piece each comprise a hook or an eye.
[0014] In an exemplary embodiment of the present disclosure, two ends of the steel wire rope away from the second connecting piece in two fixed lifting appliances are connected with the remaining two connecting ears.
[0015] In an exemplary embodiment of the present disclosure, an end of the steel rope away from the winding drum is detachably connected with the balance beam.
[0016] In an exemplary embodiment of the present disclosure, the hoisting frame is rectangular.
[0017] In an exemplary embodiment of the present disclosure, the normal projection of the fixing point on the hoisting frame coincides with the center point of the hoisting frame.
[0018] The offshore photovoltaic net rack hoisting structure of the present disclosure adopts a combined design of four trusses (e.g., a first truss, a second truss, a third truss, and a fourth truss) for the hoisting frame as the core support part of the entire hoisting structure. The first truss and the second truss are parallel and have equal lengths, and the third truss and the fourth truss are also parallel and have equal lengths, ensuring the stability and consistency of the hoisting frame in the horizontal direction. At the same time, the third truss and the fourth truss are connected between the first truss and the second truss, forming a stable rectangular frame. The ends of the four lifting bars in the first lifting fork structure that are far away from the hoisting frame converge to the same fixed point, so that the force during hoisting can be evenly distributed, improving the stability and safety of hoisting. At the same time, the simple design of the first lifting fork structure also reduces the operation complexity and improves the hoisting efficiency. The two fixed lifting lugs and the two movable lifting lugs in the second lifting fork structure are respectively arranged opposite to different lifting bars, so that the hoisting structure can flexibly adjust the position and angle of the photovoltaic net rack as needed. In the direction parallel to the hoisting frame, the two fixed lifting lugs are connected to the same side of the hoisting frame, and the two movable lifting lugs are also connected to the same side of the hoisting frame. This design not only facilitates the operation during hoisting, but also improves the overall stability and carrying capacity of the hoisting structure. By lifting the movable lifting lugs, the included angle between the photovoltaic net rack and the sea surface can be easily adjusted to meet different installation requirements.
[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS
[0020] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the present disclosure, and together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.
[0021] Figure 1 is a schematic view of the offshore photovoltaic net rack hoisting structure in an embodiment of the present disclosure.
[0022] Figure 2 is a left view of Figure 1 in an embodiment of the present disclosure.
[0023] Figure 3 is a partial enlarged view of the A area in Figure 2 .
[0024] In the figure: 11, first truss; 12, second truss; 13, third truss; 14, fourth truss; 2, hanging bar; 21, fixed point; 3, second hanging fork structure; 31, fixed lifting appliance; 311, steel wire rope; 312, second connecting piece; 32, movable lifting appliance; 321, connecting part; 322, balance beam; 323, winding drum; 324, movable pulley; 325, steel rope; 326, first connecting piece. DETAILED DESCRIPTION
[0025] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and description of these elements will not be repeated.
[0026] Although relative terms such as "upper", "lower", etc. are used herein to describe one component's relationship to another component of the icon, these terms are used herein for convenience only and are not intended to be limiting. It is to be understood that if the icon were turned over, such that the upper component became the lower component, the icon would function in the same way. When a structure is "on" another structure, it can mean that the structure is formed integrally with the other structure, or that the structure is "directly" on the other structure, or that the structure is "indirectly" on the other structure via another structure.
[0027] The terms "a", "an", "the" and "said" are used to refer to one or more than one (i.e., to "at least one") of the referenced constituent(s) / component(s) / etc.; the terms "comprising" and "having" are used to mean "including" and are open- ended, i.e., they do not exclude additional constituent(s) / component(s) / etc. The terms "first", "second", "third", and "fourth" are used only as labels, and do not imply any limitation on the number of constituent(s) / component(s) / etc.
[0028] With the transformation of global energy structure and the rapid development of renewable energy, offshore photovoltaic power station as a new clean energy utilization method is gradually valued by countries. The construction scale of offshore photovoltaic power station is increasing, and higher requirements are put forward for the hoisting technology of photovoltaic net rack. However, the offshore environment is complex and changeable, and natural factors such as wind and wave, tide, etc. pose great challenges to hoisting operation. Therefore, it is particularly important to develop a photovoltaic net rack hoisting structure which is suitable for offshore environment, simple and convenient to operate, efficient and safe.
[0029] Traditional offshore hoisting technology mostly uses a crane ship or a floating crane and the like, but these methods have many shortcomings when hoisting large photovoltaic net racks. On the one hand, the rental and use cost of the crane ship or the floating crane is high, and is greatly affected by the weather and the sea conditions, and the operation window is limited; on the other hand, the traditional hoisting method often needs a complex rope system and human cooperation in the operation process, and the operation is complex and inefficient, and the safety is difficult to be guaranteed.
[0030] Based on this, the present disclosure provides a kind of offshore photovoltaic net rack hoisting structure, as shown in Figure 1 And Figure 2 The hoisting structure can include a hoisting frame 1, a first fork structure (not shown in the figure) and a second fork structure 3, wherein:
[0031] The hoisting frame 1 includes a first truss 11, a second truss 12, a third truss 13 and a fourth truss 14, the first truss 11 and the second truss 12 are distributed in parallel, the lengths of the first truss 11 and the second truss 12 are equal and the two ends are flush respectively, the third truss 13 and the fourth truss 14 are distributed in parallel, the lengths of the third truss 13 and the fourth truss 14 are equal and the two ends are flush respectively; the third truss 13 and the fourth truss 14 are connected between the first truss 11 and the second truss 12; the first truss 11 is distributed vertically with the third truss 13;
[0032] The first fork structure includes four hoisting bars 2, one end of the four hoisting bars 2 is connected to four corner parts in the hoisting frame 1, the other end of the four hoisting bars 2 is connected to the same fixed point 21;
[0033] The second fork structure 3 is connected to the side of the hoisting frame 1 away from the first fork structure, the second fork structure 3 includes two fixed hoists 31 and two movable hoists 32, the two fixed hoists 31 and the two movable hoists 32 are arranged opposite to different hoisting bars 2; in the direction parallel to the hoisting frame 1, the two fixed hoists 31 are connected to the same side of the hoisting frame 1, the two movable hoists 32 are connected to the same side of the hoisting frame 1, the fixed hoist 31 and the movable hoist 32 are used for connecting the photovoltaic net rack, and lifting the movable hoist 32 can adjust the included angle between the photovoltaic net rack and the sea surface.
[0034] The offshore photovoltaic net rack hoisting structure of the present disclosure adopts a combined design of four trusses (e.g., the first truss 11, the second truss 12, the third truss 13, and the fourth truss 14) for the core support part of the entire hoisting structure. The first truss 11 and the second truss 12 are parallel and have equal lengths, and the third truss 13 and the fourth truss 14 are also parallel and have equal lengths, ensuring the stability and consistency of the hoisting frame 1 in the horizontal direction. At the same time, the third truss 13 and the fourth truss 14 are connected between the first truss 11 and the second truss 12, forming a stable rectangular frame. The ends of the four hoisting bars 2 in the first hoisting fork structure that are far away from the hoisting frame 1 converge to the same fixed point 21, so that the force during hoisting can be evenly distributed, improving the stability and safety of hoisting. At the same time, the simple design of the first hoisting fork structure also reduces the operation complexity and improves the hoisting efficiency. The two fixed hoisting lugs 31 and the two movable hoisting lugs 32 in the second hoisting fork structure 3 are respectively arranged opposite to different hoisting bars 2, so that the hoisting structure can flexibly adjust the position and angle of the photovoltaic net rack as needed. In the direction parallel to the hoisting frame 1, the two fixed hoisting lugs 31 are connected to the same side of the hoisting frame 1, and the two movable hoisting lugs 32 are also connected to the same side of the hoisting frame 1. This design not only facilitates the operation during hoisting, but also improves the overall stability and carrying capacity of the hoisting structure. By lifting the movable hoisting lug 32, the included angle between the photovoltaic net rack and the sea surface can be easily adjusted to meet different installation requirements.
[0035] The parts of the offshore photovoltaic net rack hoisting structure of the present disclosure and their specific details will be described in detail below:
[0036] The hoisting frame 1 is the core component of the photovoltaic net rack hoisting structure, bearing the weight of the photovoltaic net rack and various forces during hoisting. As shown in Figure 1 , the hoisting frame 1 can be a hollow structure to reduce weight and manufacturing cost. For example, the hoisting frame 1 can be composed of multiple trusses, which can be fixedly connected together by welding or bolt connection, etc., forming a stable and solid frame.
[0037] Please continue to refer to Figure 1 , the hoisting frame 1 can include the first truss 11, the second truss 12, the third truss 13, and the fourth truss 14. The materials of the first truss 11, the second truss 12, the third truss 13, and the fourth truss 14 can all be high-strength, corrosion-resistant alloy steel or aluminum alloy materials to ensure long-term stability and durability in harsh marine environments.
[0038] The first truss 11 and the second truss 12 can be distributed in parallel, the lengths of the first truss 11 and the second truss 12 are equal and the two ends are flush respectively, the third truss 13 and the fourth truss 14 are distributed in parallel, the lengths of the third truss 13 and the fourth truss 14 are equal and the two ends are flush respectively; the third truss 13 and the fourth truss 14 are connected between the first truss 11 and the second truss 12; the first truss 11 and the third truss 13 are distributed vertically, and the stability and consistency of the hoisting frame 1 in the horizontal direction can be ensured through the cooperation of the first truss 11, the second truss 12, the third truss 13 and the fourth truss 14. In an exemplary embodiment of the present disclosure, the hoisting frame 1 can be substantially rectangular, that is, the hoisting frame 1 can be a rectangular frame structure composed of the first truss 11, the second truss 12, the third truss 13 and the fourth truss 14.
[0039] Please continue to see Figure 1 As shown, the first lifting fork structure can include four lifting bars 2, which can be arranged on the same side of the hoisting frame 1 (for example, the side of the hoisting frame 1 away from the sea), and the lifting bars 2 can be in the form of a strip or a flat band, and the material thereof can be a high-strength, corrosion-resistant material to resist the erosion of harsh marine environments and the irradiation of ultraviolet rays. For example, the lifting bars 2 can be steel ropes or cables, and in order to further enhance their durability, the surface of the lifting bars 2 can be coated with a waterproof and corrosion-resistant coating. A plurality of lifting bars 2 can be distributed along the circumference of the hoisting frame 1 to ensure stability during hoisting and avoid safety hazards caused by excessive stress on a single point.
[0040] In an exemplary embodiment of the present disclosure, one end of each of the four lifting bars 2 is connected to a corner portion in the hoisting frame 1, and the other end of each of the four lifting bars 2 can be connected to the same point (i.e., the fixed point 21). The fixed point 21 of each lifting bar 2 can be a reinforced lifting ring or lifting bracket, and the material thereof can be high-strength stainless steel to ensure that it can withstand the combined force of all the lifting bars 2. Each lifting bar 2 can be connected to the fixed point 21 using an adjustable locking device such as a screw buckle or a quick release buckle. This design not only allows the tension of the lifting bars 2 to be adjusted as needed, but also allows the hoisting state to be quickly released in an emergency, facilitating a quick response to sudden marine conditions.
[0041] In an exemplary embodiment of the present disclosure, the lengths of the lifting bars 2 are equal, and the orthographic projection of the fixed point 21 of each lifting bar 2 away from the hoisting frame 1 on the hoisting frame 1 coincides with the center point of the hoisting frame 1. This design ensures uniform force distribution during hoisting, avoids deformation of the hoisting frame 1 or instability of the hoisting system caused by uneven force distribution, and helps to improve the stability and safety during hoisting, so that the entire hoisting system can uniformly bear the weight of the hoisted object, avoiding potential risks caused by uneven force distribution.
[0042] It should be noted that the length of the hanging strip 2 can be accurately calculated according to the weight, size of the object to be hoisted (for example, a photovoltaic net rack) and the safety margin in the hoisting process, and the length of the hanging strip 2 needs to ensure that all the hanging strips 2 can maintain the same tension during hoisting, so as to avoid any single point being stressed too much and ensure the stability and safety of the entire hoisting system.
[0043] The diameter (or width and thickness) of the hanging strip 2 is large enough to disperse the pressure in the hoisting process, reduce the stress concentration of the contact surface between the hanging strip 2 and the hoisting frame 1 or the hoisted object, and prevent the hanging strip 2 from being worn or broken due to long-term stress. Specifically, the diameter or width of the hanging strip 2 can be tens of millimeters to hundreds of millimeters, and the specific value depends on the specific requirements and design standards of the hoisting system.
[0044] In an exemplary embodiment of the present disclosure, the hanging strip 2 can be detachably connected with the hoisting frame 1. For example, the four corners of the hoisting frame 1 can be provided with connection buckles (not shown in the figure), and the end of the hanging strip 2 close to the hoisting frame 1 can be provided with a hook, which can be hung with the connection buckle, thereby detachably connecting the hanging strip 2 with the hoisting frame 1.
[0045] As shown in Figure 2 The second fork structure 3 is connected to the side of the hoisting frame 1 away from the first fork structure, and the design of the second fork structure 3 fully considers the connection stability and angle adjustment flexibility of the photovoltaic net rack. For example, the second fork structure 3 can include two fixed lifting lugs 31 and two movable lifting lugs 32, which are respectively connected to the positions of the four corners of the hoisting frame 1, and the two fixed lifting lugs 31 and the two movable lifting lugs 32 are respectively arranged opposite to different hanging strips 2. The two fixed lifting lugs 31 and the two movable lifting lugs 32 can be used as an extension of the hoisting frame 1 for transmitting the hoisting force. The fixed lifting lugs 31 and the movable lifting lugs 32 are designed in structure to be able to cooperate with the connecting components of the photovoltaic net rack, ensuring firm connection and easy disassembly.
[0046] In the direction parallel to the lifting frame 1, two fixed lifting devices 31 are connected to the same side of the lifting frame 1, and two movable lifting devices 32 are connected to the same side of the lifting frame 1, the fixed lifting devices 31 and the movable lifting devices 32 are used to connect the photovoltaic net frame, and the lifting of the movable lifting devices 32 can adjust the angle between the photovoltaic net frame and the sea surface. In the above design, two fixed lifting devices 31 are connected to the same side of the lifting frame 1, and two movable lifting devices 32 are connected to the same side of the lifting frame 1, which can facilitate the adjustment of the height of different sides of the photovoltaic net frame relative to the sea surface, and further adjust the angle of the photovoltaic net frame relative to the sea surface. During the lifting process, one end of the photovoltaic net frame can be stably fixed by the two fixed lifting devices 31, and the other end of the photovoltaic net frame can be connected by the two movable lifting devices 32, and then the angle between the photovoltaic net frame and the sea surface can be adjusted by lifting the movable lifting devices 32, so that the photovoltaic support presents a preset angle with the sea surface, so as to better absorb light energy, and further realize the full use of offshore solar energy.
[0047] In an exemplary embodiment of the present disclosure, as shown in Figure 2 The movable lifting device 32 can include a connecting part 321, a balance beam 322, a winding drum 323, a movable pulley 324 and a steel rope 325.
[0048] As shown in Figure 2 and Figure 3 The connecting part 321 can be in the form of a plate, a block or a rod, and the material thereof can be high-strength alloy steel or stainless steel material, which has good tensile strength and corrosion resistance, and can ensure that it will not be damaged due to external force or environmental factors during long-term use. The connecting part 321 can be detachably connected to the end of the lifting frame 1. For example, the connecting part 321 can have a protruding part (not shown in the figure), which can be connected to the end of the lifting frame 1, for example, the protruding part in the connecting part 321 can be hung on the end of the lifting frame 1, connected by bolts or pins, etc.
[0049] Please continue to refer to Figure 2 and Figure 3 The balance beam 322 can be in the form of a plate or a rod, and preferably, the balance beam 322 can be in the form of a long strip-shaped plate structure. The material of the balance beam 322 is high-strength alloy steel or stainless steel material, which can ensure that the balance beam 322 will not be deformed or broken when bearing a large load. The middle part of the balance beam 322 is connected to the end of the connecting part 321 away from the lifting frame 1, for example, the balance beam 322 can be connected to the end of the lifting frame 1 by bolts or pins, or the balance beam 322 and the end of the connecting part 321 away from the lifting frame 1 can be welded together.
[0050] The winding drum 323 can be a cylindrical structure, and a helical groove can be arranged on the surface of the winding drum 323, so that the steel wire 325 can be tightly wound on the winding drum 323. The material of the winding drum 323 can be a wear-resistant and corrosion-resistant metal material, for example, the material of the winding drum 323 can be cast iron or alloy steel, so as to ensure that the winding drum 323 will not be damaged due to wear or corrosion during long-term use. The winding drum 323 can be arranged at one end of the balance beam 322 and can rotate relative to the balance beam 322. In some embodiments of the present disclosure, the winding drum 323 can be fixedly connected with the balance beam 322 through a bearing or a shaft sleeve and the like, so as to ensure that the winding drum 323 can rotate smoothly.
[0051] The movable pulley 324 can be a circular or annular structure with a rim, and an axle hole is arranged in the middle, so as to install an axle pin or a bearing, so as to ensure that the movable pulley 324 can rotate smoothly. The movable pulley 324 can be made of a wear-resistant and light metal material, such as aluminum alloy or stainless steel. One end of the steel wire 325 can be wound and fixed to the winding drum 323, and the other end can pass through the movable pulley 324 and be fixed to the other end of the balance beam 322; for example, the end of the steel wire 325 away from the winding drum 323 is detachably connected with the balance beam 322. That is, the movable pulley 324 is located on the path of the steel wire 325, and after the steel wire 325 passes through the movable pulley 324, the direction of the steel wire 325 can be changed, so as to realize the mechanical transmission in the hoisting process. The winding drum 323 can wind and unwind the steel wire 325, and during the unwinding process of the steel wire 325, as the length of the steel wire 325 increases, the distance between the movable pulley 324 and the balance beam 322 gradually increases, and the height of the movable pulley 324 relative to the sea surface gradually decreases, as shown in the second state in FIG. 6; during the winding process of the steel wire 325, as the length of the steel wire 325 decreases, the distance between the movable pulley 324 and the balance beam 322 gradually decreases, and the height of the movable pulley 324 relative to the sea surface gradually increases, so that the photovoltaic net rack is lifted, and the state of the movable pulley 324 is shown in the first state in FIG. 5. Figure 2 Figure 2
[0052] In some embodiments of the present disclosure, the movable pulley 324 is provided with a first connecting piece 326, one end of the first connecting piece 326 can be connected with the axle pin or the central shaft on the movable pulley 324. The other end of the first connecting piece 326 can be connected with the photovoltaic net rack. The first connecting piece 326 can be a lifting hook or a lifting ring, and the specific structure thereof can be matched with the component matched with the photovoltaic net rack. For example, when the component matched with the photovoltaic net rack on the photovoltaic net rack is a hook, the first connecting piece 326 is a lifting ring; when the component matched with the photovoltaic net rack on the photovoltaic net rack is annular, the first connecting piece 326 is a hook. During the unwinding process of the steel wire 325, since the height of the fixed hoist 31 is unchanged, the height of the end of the photovoltaic net rack connected with the fixed hoist 31 is unchanged, and the first connecting piece 326 connected with the movable pulley 324 can drive the end of the photovoltaic net rack connected therewith to be unwound until the photovoltaic net rack is at a preset angle with the sea surface.
[0053] In an exemplary embodiment of the present disclosure, the fixed lifting lugs 31 and the movable lifting lugs 32 are detachably connected with the lifting frame 1. For example, the lifting structure can include four connecting ears, which are respectively arranged at the two ends of the first truss 11 and the two ends of the second truss 12 and located at the side of the lifting frame 1 away from the first lifting fork structure; two first connecting members 326 of the two movable lifting lugs 32 are respectively connected with different connecting ears.
[0054] The connecting ears can be made of high-strength alloy material, which has strong load-bearing capacity and corrosion resistance. The connecting ear can include a fixed part and an ear part arranged on the fixed part. The fixed part can be block-shaped and can be welded or connected with the lifting frame 1 by bolts. The ear part can be arranged perpendicularly to the fixed part and can be in an integral structure with the fixed part. The ear part can be provided with a connecting hole, which can penetrate the ear part along the thickness direction of the ear part. The shape of the connecting hole can be circular, oval, polygonal or irregular, which is not specially limited here.
[0055] The connecting ear can serve as a connecting bridge between the lifting frame 1 and the fixed lifting lugs 31 or the movable lifting lugs 32. For example, two fixed lifting lugs 31 and two movable lifting lugs 32 can be respectively connected with different connecting ears. Specifically, two connecting parts 321 of the two movable lifting lugs 32 can be respectively connected with different connecting ears, for example, the connecting part 321 can be hung with the connecting ear.
[0056] In an exemplary embodiment of the present disclosure, the fixed lifting lug 31 can include a steel wire rope 311 and a second connecting member 312 at one end of the steel wire rope 311. The end of the steel wire rope 311 away from the second connecting member 312 can be connected with the lifting frame 1, for example, the ends of the two steel wire ropes 311 away from the second connecting member 312 of the two fixed lifting lugs 31 can be connected with the remaining two connecting ears. In an exemplary embodiment of the present disclosure, in order to enhance the safety and stability of the connection, a special connector or shackle can be used to connect the steel wire rope 311 and the ear part together.
[0057] The second connecting member 312 can be connected with the end of the steel wire rope 311 away from the ear part through a special connector, and the second connecting member 312 can be connected with the photovoltaic net rack. The second connecting member 312 can be a hook or a lifting ring, and its specific structure can be matched with the components on the photovoltaic net rack. For example, when the components on the photovoltaic net rack are hooks, the second connecting member 312 is a lifting ring; when the components on the photovoltaic net rack are rings, the second connecting member 312 is a hook.
[0058] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims
1. A net rack hoisting structure for offshore photovoltaic, for hoisting a photovoltaic net rack, characterized in that, The lifting frame comprises a first truss, a second truss, a third truss and a fourth truss, the first truss and the second truss are parallel, the lengths of the first truss and the second truss are equal, and the two ends of the first truss and the second truss are flush, the third truss and the fourth truss are parallel, the lengths of the third truss and the fourth truss are equal, and the two ends of the third truss and the fourth truss are flush, the third truss and the fourth truss are connected between the first truss and the second truss, and the first truss is perpendicular to the third truss. The first lifting fork structure comprises four lifting bars, one end of each of the four lifting bars is connected to a corner of the lifting frame, and the other end of each of the four lifting bars is connected to the same fixed point. The second lifting fork structure is connected to the side of the lifting frame away from the first lifting fork structure, the second lifting fork structure comprises two fixed lifting devices and two movable lifting devices, the two fixed lifting devices and the two movable lifting devices are respectively arranged opposite to different lifting bars, in the direction parallel to the lifting frame, the two fixed lifting devices are connected to the same side of the lifting frame, and the two movable lifting devices are connected to the same side of the lifting frame, the fixed lifting devices and the movable lifting devices are used for connecting the photovoltaic net frame, and lifting the movable lifting devices can adjust the included angle between the photovoltaic net frame and the sea surface. The lifting bars, the fixed lifting devices and the movable lifting devices are detachably connected to the lifting frame.
2. The hoisting structure of a space truss according to claim 1, wherein The movable lifting device comprises a connecting part, a balance beam, a winding drum, a movable pulley and a steel rope, one end of the connecting part is connected to the end of the lifting frame, the middle part of the balance beam is connected to the end of the connecting part away from the lifting frame, the winding drum is arranged at one end of the balance beam, one end of the steel rope is wound and fixed on the winding drum, and the other end of the steel rope is connected to the other end of the balance beam after passing through the movable pulley, the winding drum can wind and unwind the steel rope, the movable pulley is provided with a first connecting piece, and the first connecting piece is connected to the photovoltaic net frame.
3. The hoisting structure of claim 1, wherein The lifting structure further comprises four connecting ears, the four connecting ears are respectively arranged at the two ends of the first truss and the two ends of the second truss, and are located on the side of the lifting frame away from the first lifting fork structure, and the two connecting parts in the two movable lifting devices are respectively connected to different connecting ears.
4. The hoisting structure of claim 3, wherein The fixed lifting device comprises a steel wire rope and a second connecting piece at one end of the steel wire rope, the end of the steel wire rope away from the second connecting piece is connected to the lifting frame, and the second connecting piece is connected to the photovoltaic net frame.
5. The hoisting structure of claim 4, wherein The first connecting piece and the second connecting piece each comprise a lifting hook or a lifting ring.
6. The hoisting structure of claim 5, wherein The ends of the two steel wire ropes away from the second connecting pieces in the two fixed lifting devices are connected to the remaining two connecting ears.
7. The hoisting structure of claim 5, wherein The end of the steel rope away from the winding drum is detachably connected to the balance beam.
8. The hoisting structure of claim 3, wherein The lifting frame is rectangular.
9. The hoisting structure of any one of claims 1-8, wherein, The orthographic projection of the fixed point on the lifting frame coincides with the center point of the lifting frame.
10. The hoisting structure of claim 9, wherein,