A working platform for lattice tower and wind turbine generator

Abstract

The utility model discloses a kind of operation platform and wind turbine generator for lattice tower. Including crossbeam, polygonal frame, guardrail, handrail and step. Adjacent crossbeam staggered connection, constitute inner polygonal structure and overhanging part, wherein inner polygonal structure is connected with lattice tower, overhanging part constitutes operation platform bottom support. The end of overhanging part is connected with polygonal frame corner setting. Guardrail includes two groups of balustrades, two groups of balustrades are staggered connection at linear segment midpoint;Guardrail is set around polygonal frame to form closed annular guardrail structure. Handrail is set as annular, and the turning point of balustrade is connected. Step is laid on the polygonal support surrounded by different crossbeam and polygonal frame. Operating platform structure is simple, each part is made by ordinary section bar after simple processing, and connection relationship is direct, easy to install. Operating platform provides appropriate operating space for maintenance personnel, while ensuring safety and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, specifically relating to a working platform for a lattice tower and a wind turbine. Background Technology

[0002] Wind power is the most valuable and commercially viable power generation method in the renewable energy sector, with abundant and widely distributed wind energy reserves worldwide.

[0003] Large wind turbines have high power ratings and large component dimensions, and the nacelle space that houses these components provides ample maintenance space. Additionally, the tower's large inner diameter due to load-bearing requirements allows for the installation of work platforms inside, providing sufficient operating space for maintenance personnel.

[0004] Small and medium-sized generator sets have lower power ratings and smaller component dimensions. The internal space of the nacelle is greatly reduced, and small generator sets may even lack the concept of a nacelle altogether. At the same time, the reduced load-bearing requirements of the tower lead to a smaller inner diameter of the tower, resulting in cramped internal space that is insufficient for maintenance work.

[0005] Therefore, there is a need for a working platform for small and medium-sized wind turbines, which must provide adequate maintenance space for installation and maintenance personnel, and the working platform should have a simple structure that is easy to manufacture and install. Summary of the Invention

[0006] To address at least one of the aforementioned technical problems, a first aspect provides a working platform for lattice-type towers, characterized in that... Includes beams, polygonal frames, guardrails, handrails, and treads; There are at least three crossbeams, and adjacent crossbeams are connected in an alternating manner to form an inner polygonal structure and a cantilevered portion. The inner polygonal structure is used to connect with the lattice tower, and the cantilevered portion forms the bottom support of the work platform. Based on the ends of adjacent overhanging sections, a polygonal frame is constructed using multiple segments or a single continuously bent profile; the ends of the overhanging sections are connected to the corners of the polygonal frame. The guardrail includes two sets of railings, both of which are spatial polygonal structures containing multiple straight segments and turning points on both sides; the two sets of railings are staggered and connected at the midpoints of the straight segments; the guardrail is set around a polygonal frame, so that the turning point on one side of the railing corresponds one-to-one with the corner of the polygonal frame and forms a connection, forming a closed ring-shaped guardrail structure. The handrail is designed as a ring and connects to the turning point on the other side of the railing in the guardrail; The treads are laid on polygonal supports formed by different crossbeams and polygonal frames.

[0007] In a further technical solution, the portion of each beam belonging to the inner polygonal structure is connected to the two main legs of the lattice tower.

[0008] All of the beams are of equal length, and the length of each beam belonging to the overhang is equal.

[0009] The railing is made by bending a single, continuous steel bar or by connecting multiple sections of steel bars.

[0010] The railing comprises at least six straight segments, and both sets of the railing are identical.

[0011] The inner diameter of the handrail is equal to or greater than the diameter of the circle formed by all the overhangs.

[0012] The pedals include multiple first-type pedals and multiple second-type pedals; the first-type pedals are laid on a first-type polygonal support, which is composed of one side of the polygonal frame, a portion of the crossbeam that belongs to the inner polygonal structure, and the cantilever portion adjacent to the crossbeam.

[0013] In a further technical solution, the second type of tread is laid on a second type of polygonal support consisting of two adjacent overhanging portions and one side of the polygonal frame.

[0014] One of the first type of pedals is configured to be movable, serving as a pedestrian passageway.

[0015] In a second aspect, a wind turbine is provided, which includes a working platform for a lattice tower as described in the first aspect.

[0016] The beneficial effects of this utility model are as follows: By interlacing identical profiles to form an inner and outer structure, the inner part can be directly connected to the main support legs of the lattice-type tower, forming a reliable fixed support. The outer part naturally forms the bottom support of the operating platform. Guardrails and handrails provide safety and convenience for maintenance personnel. The entire operating platform structure is simple, with each part made from ordinary profiles through simple processing, and the connections are direct and easy to install. The operating platform provides maintenance personnel with adequate operating space while ensuring safety and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a crossbeam for a lattice tower according to an embodiment of the present invention; Figure 2 This is a schematic diagram illustrating the connection between the crossbeam of the working platform for a lattice tower and the main support leg of the lattice tower, according to an embodiment of the present invention. Figure 3This is a schematic diagram of the connection between the polygonal frame and the crossbeam of a working platform for a lattice tower according to an embodiment of the present invention. Figure 4 This is a schematic diagram showing the unfolded plan of two sets of railings on a working platform for a lattice tower according to an embodiment of the present invention. Figure 5 This is a schematic diagram showing the unfolded plan of two sets of guardrails on a working platform for a lattice tower according to an embodiment of the present invention. Figure 6 This is a schematic diagram of the connection between the railing of the working platform for a lattice tower and the polygonal frame according to an embodiment of the present invention. Figure 7 This is a schematic diagram of a work platform guardrail for a lattice tower according to an embodiment of the present utility model; Figure 8 This is a side view of a working platform for a lattice tower according to an embodiment of the present invention; Figure 9 This is a top-view schematic diagram of a working platform treadmill for a lattice tower according to an embodiment of the present invention; Figure 10 This is a schematic diagram illustrating the classification of work platform treads for a lattice tower according to an embodiment of the present invention; Figure 11 This is a schematic diagram of the working platform footboard arrangement for a lattice tower according to an embodiment of the present invention.

[0018] Explanation of icon numbers: 1. Crossbeam; 1.1. Internal polygonal structure; 1.2. Cantilevered portion; 2. Polygonal frame; 2.1. Polygonal frame corner; 3. Guardrail; 3.1. Railing; 3.11. Straight segment; 3.12. Turning point; 4. Handrail; 5. Pedal; 5.1. Type I pedal; 5.2. Type II pedal; 6. Main support leg of lattice tower.

[0019] It is worth noting that the above figures are for illustrating the features of this utility model and are not intended to show any actual structure or reflect the dimensions, proportions, or other details of various components. To more clearly illustrate the principle of this utility model and to avoid unnecessary details obscuring its principles, the examples in the figures have been simplified. These illustrations will not cause inconvenience to those skilled in the art in understanding this patent, while actual embodiments may include more modules or components. Detailed Implementation

[0020] To make the objectives and technical solutions of the present utility model clearer, the embodiments of the present utility model will be fully described below with reference to the accompanying drawings. This patent describes only a portion of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] An embodiment of a working platform for lattice towers. The work platform consists of a crossbeam (1), a polygonal frame (2), a guardrail (3), a handrail (4), and a footboard (5).

[0022] There are at least three crossbeams (1), and four crossbeams (1) are used in this embodiment. As shown in the figure, adjacent crossbeams (1) are staggered to form an inner polygonal structure (1.1) and a cantilevered portion (1.2). The part outlined by the dashed line in the figure is the inner polygonal structure (1.1), which is actually a quadrilateral structure in this embodiment. The part outside the dashed line is the cantilevered portion (1.2). The main function of the inner polygonal structure (1.1) is to connect with the lattice tower. In this embodiment, the part of each crossbeam (1) belonging to the inner polygonal structure (1.1) is connected to the main legs (6) of the two lattice towers. The cantilevered portion (1.2) forms the bottom support of the working platform, providing support for the polygonal frame (2), the guardrail (3), and the handrail (4). Generally, all crossbeams (1) are of equal length, and the length of each crossbeam (1) belonging to the cantilevered portion (1.2) is equal. That is to say, the length of the part of the crossbeam (1) belonging to the inner polygonal structure (1.1) is also equal. This arrangement is due, on the one hand, to the fact that the inner polygonal structure (1.1) is directly connected to the main support leg (6) of the lattice tower, and the span of the main support leg (6) of the lattice tower is equal (i.e., the distance between two adjacent main support legs is equal). On the other hand, it is because the maintenance space requirement is the same around the lattice tower, and the length of the cantilevered portion (1.2) remains unchanged. In some special embodiments, the length of some crossbeams (1) belonging to the cantilevered portion (1.2) can be adjusted according to requirements. For example, if more maintenance space is required in a certain direction, then the length of the crossbeam (1) belonging to the cantilevered portion (1.2) in this direction is longer, resulting in the length of the crossbeams (1) not being all equal.

[0023] As shown in the figure, a polygon can be constructed based on the ends of adjacent overhanging portions (1.2), which is an octagon in this embodiment. According to this polygon, a polygonal frame (2) is constructed using multiple segments of material or a single continuous bent profile. The number of ends of the overhanging portions (1.2) is the same as the number of corners (2.1) of the polygonal frame. The ends of the overhanging portions (1.2) can be connected to the corners (2.1) of the polygonal frame to realize the support of the overhanging portions (1.2) for the polygonal frame (2).

[0024] The guardrail (3) includes two sets of railings (3.1), both sets of railings (3.1) are spatial polygonal structures, containing multiple straight segments (3.11) and turning points on both sides (3.12). Each railing (3.1) contains at least six straight segments (3.11), and the two sets of railings (3.1) are identical. In this embodiment, each set of railings (3.1) contains eight straight segments (3.11), and the number of straight segments (3.11) is equal to the number of polygonal frame corners (2.1). Each set of railings (3.1) can be made by bending a single complete steel bar or by connecting multiple steel bars. When the railing (3.1) is made by connecting multiple steel bars, the connection method is generally welding.

[0025] The straight segments (3.11) of the two sets of railings (3.1) intersect at their midpoints and are connected at the intersections. The connection can be made by welding or by using fasteners. Since both sets of railings (3.1) are spatial polygonal structures, there are multiple turning points (3.12) on both sides of each set. The turning points (3.12) are the points where the railings (3.1) turn, which are also the points where adjacent straight segments (3.11) connect.

[0026] The guardrail (3) is set around the polygonal frame (2). The turning point (3.12) on one side of the railing (3.1) corresponds to the corner (2.1) of the polygonal frame and forms a connection, forming a closed ring guardrail structure. In this embodiment, the polygonal frame (2) has eight corners, which means that there are also eight turning points (3.12) on one side of the railing (3.1).

[0027] The handrail (4) is designed as a ring and is connected to the turning point (3.12) on the other side of the railing (3.1) in the guardrail (3). The connection method can be welding or fastener connection. The inner diameter of the handrail (4) is equal to or greater than the diameter of the circle formed by all the overhanging parts (1.2). That is to say, from the overall shape, the working platform is approximately cylindrical or inverted conical. The reason for this design is mainly to maximize the maintenance space.

[0028] The tread (5) is laid on a polygonal support formed by different crossbeams (1) and a polygonal frame (2).

[0029] The pedal (5) can be divided into a first type of pedal (5.1) and a second type of pedal (5.2). As shown in the figure, the first type of pedal (5.1) is laid on a first type of polygonal support, which is composed of one side of the polygonal frame (2), a part of the inner polygonal structure (1.1) of a crossbeam (1), and the cantilevered part (1.2) adjacent to this crossbeam (1).

[0030] The second type of tread (5.2) is laid on a second type of polygonal support consisting of two adjacent overhangs (1.2) and one side of the polygonal frame (2).

[0031] One of the first-class pedals (5.1) is set to be movable as a pedestrian passageway.

[0032] The novelty and advantages of the above technical solution are: The platform has a simple structure. Each component is made from common profiles using simple processing techniques. Furthermore, the connection methods between components are also simple, resulting in lower raw material and manufacturing costs.

[0033] Multiple crossbeams (1) of the same specification are connected in an interlaced manner, and can be directly connected to the main support legs (6) of the lattice tower. Each crossbeam (1) can be connected to the main support legs (6) of two lattice towers at the same time, and the crossbeams (1) are also connected to each other, so that the reliability and safety of the platform are guaranteed.

[0034] The polygonal frame (2), guardrail (3) and handrail (4) have a simple structure, which can ensure the safety of personnel and provide sufficient operating space to ensure the convenience of installation and maintenance work.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "back," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.

[0036] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between 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.

[0037] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A working platform for a lattice-type tower, characterized in that, The system includes a crossbeam (1), a polygonal frame (2), a guardrail (3), a handrail (4), and a step (5); there are at least three crossbeams (1), which are staggered to form an inner polygonal structure (1.1) and a cantilevered portion (1.2), wherein the inner polygonal structure (1.1) is used to connect with the lattice tower, and the cantilevered portion (1.2) forms the bottom support of the working platform; based on the ends of adjacent cantilevered portions (1.2), multiple segments or a single continuously bent complete profile are used to form the polygonal frame (2); the ends of the cantilevered portions (1.2) are connected to the corners (2.1) of the polygonal frame; the guardrail (3) includes two sets of railings (3.1), and the two sets of railings The bars (3.1) are all spatial broken line structures, containing multiple straight line segments (3.11) and turning points on both sides (3.12); the two sets of railings (3.1) are staggered at the midpoint of the straight line segments (3.11); the guardrail (3) is set around the polygonal frame (2), so that the turning point (3.12) on one side of the railing (3.1) corresponds one-to-one with the corner (2.1) of the polygonal frame and forms a connection, forming a closed ring guardrail structure; the handrail (4) is set as a ring and is connected to the turning point (3.12) on the other side of the railing (3.1) in the guardrail (3); the tread (5) is laid on the polygonal support formed by different crossbeams (1) and the polygonal frame (2).

2. The working platform for a lattice tower according to claim 1, characterized in that, Each of the beams (1) that belongs to the inner polygonal structure (1.1) is connected to the main legs (6) of the two lattice towers.

3. The working platform for a lattice tower according to claim 1, characterized in that, All of the beams (1) are of equal length, and the length of each beam (1) belonging to the overhang (1.2) is equal.

4. A working platform for a lattice-type tower according to claim 1, characterized in that, The railing (3.1) is made by bending a single, complete steel bar or by connecting multiple sections of steel bars.

5. A working platform for a lattice-type tower according to claim 1, characterized in that, The railing (3.1) comprises at least six straight segments (3.11), and the two sets of railings (3.1) are identical.

6. A working platform for a lattice tower according to claim 1, characterized in that, The inner diameter of the handrail (4) is equal to or greater than the diameter of the circle formed by all the overhangs (1.2).

7. A working platform for a lattice tower according to claim 1, characterized in that, The pedal (5) includes a plurality of first-type pedals (5.1) and a plurality of second-type pedals (5.2); the first-type pedals (5.1) are laid on a first-type polygonal support, which is composed of one side of the polygonal frame (2), a portion of the crossbeam (1) belonging to the inner polygonal structure (1.1), and the cantilever portion (1.2) adjacent to the crossbeam (1).

8. A working platform for a lattice tower according to claim 7, characterized in that, The second type of tread (5.2) is laid on a second type of polygonal support consisting of two adjacent overhangs (1.2) and one side of the polygonal frame (2).

9. A working platform for a lattice tower according to claim 7, characterized in that, One of the first type of pedals (5.1) is configured to be movable as a pedestrian passageway.

10. A wind turbine generator set, characterized in that, The platform includes a working platform for a lattice tower as described in any one of claims 1-9.

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