A wind power mixed tower inner steel permanent platform structure

Abstract

The utility model discloses a kind of wind power mixed tower inner steel permanent platform structure, including platform beam, multiple corbels and platform panel, the outer side edge of the platform beam is connected with the inner wall of the pipe piece of mixed tower by multiple corbels, multiple corbels are arranged on the inner wall of mixed tower along the circumferential direction of mixed tower, one end of each corbel is respectively connected with the threaded sleeve embedded on the inner wall of pipe piece, its other end is respectively provided with two arc-shaped mounting holes for connecting girder assembly, two arc-shaped mounting holes are mirror image symmetry arrangement, adjust corbels along circumferential direction by two arc-shaped mounting holes, to adapt the installation working condition of various included angle angle formed by platform beam and corbel, the platform panel is fixed on platform beam.The utility model has the advantages of simple structure, strong bearing capacity, high safety, strong reliability etc., can be hoisted after ground assembly and with pipe piece assembly, assembly efficiency is high, and can adapt the installation working condition of various included angle angle formed by platform beam and corbel.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power hybrid towers, and in particular to a permanent steel platform structure inside a wind power hybrid tower. Background Technology

[0002] In wind turbine generators, a permanent steel platform needs to be installed inside the concrete tower, mounted to the inner wall of the tower via brackets. As the tower diameter increases, the platform diameter can reach over 11 meters. Current platform design faces several challenges:

[0003] 1) Traditional steel platforms have insufficient load-bearing capacity and cannot meet the functional requirements of installing electrical equipment, serving as a starting platform for elevators or climbers, providing rest areas for personnel, and facilitating the entry and exit of maintenance personnel and equipment;

[0004] 2) The platform bracket cannot be adjusted in angle. Due to manufacturing and installation errors, the mounting holes cannot be aligned with the platform beam during construction, making installation impossible.

[0005] 3) Traditional steel platforms need to be assembled on the ground and then lifted into the air by a crane to install with the tunnel segments, which results in low assembly efficiency, high risk and great construction difficulty.

[0006] Therefore, an improved platform design is urgently needed to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a permanent steel platform structure inside a wind power hybrid tower. It has the advantages of simple structure, strong load-bearing capacity, high safety and high reliability. It can be assembled on the ground and hoisted as a whole after being assembled with the tunnel segments. It has high assembly efficiency and can adapt to various installation conditions where the platform beam and the corbel form various angles.

[0008] The objective of this utility model can be achieved by adopting the following technical solutions:

[0009] A permanent steel platform structure for a wind turbine hybrid tower includes a platform beam, multiple brackets, a platform panel, and a platform safety railing. The platform beam is generally ring-shaped, and its outer edge is connected to the inner wall of the tower segments via multiple brackets. The brackets are arranged along the circumference of the tower on the inner wall, with the axis of each bracket arranged radially along the tower. One end of each bracket is connected to a threaded sleeve pre-embedded in the inner wall of the segment, and the other end has two arc-shaped mounting holes for connecting the main beam assembly. The two arc-shaped mounting holes are arranged in a mirror symmetrical manner, allowing adjustment of the brackets along the circumference to accommodate various installation conditions where the platform beam and brackets form an angle. The platform panel is fixed to the platform beam, and a platform safety railing is provided around the outer edge of the platform beam.

[0010] Furthermore, the platform beam includes multiple main beam assemblies arranged sequentially. Each main beam assembly is formed by cross-welding multiple crossbeams and longitudinal beams, and the weld joints are provided with bevels for easy connection.

[0011] Furthermore, flange plates are provided at the joints of adjacent main beam components to facilitate connection, and the two mating flange plates are connected by bolts and lock nuts.

[0012] Furthermore, triangular plates are provided at the weld joints of the crossbeams and longitudinal beams to reduce stress concentration.

[0013] Furthermore, hoisting studs are provided at the outer edge of the platform beam to facilitate hoisting construction.

[0014] Furthermore, the platform panel is divided into multiple segments according to the multiple main beam components of the platform beam. Each segment corresponds to one of the multiple main beam components, and each segment is fixed to the corresponding main beam component by bolt assembly.

[0015] Furthermore, the platform panel is a 4mm thick lentil-shaped patterned steel plate, and the bottom surface of the platform panel is provided with a reinforcing rib plate, which is also a 4mm thick lentil-shaped patterned steel plate.

[0016] Furthermore, the bracket includes a bracket body and an anti-friction plate. The bracket body is arranged radially along the mixing tower, with one end connected to the inner wall of the pipe segment and the other end provided with two arc-shaped mounting holes for connecting the platform beam. The two arc-shaped mounting holes are arranged in a mirror symmetrical manner, and the centers of the two arc-shaped mounting holes coincide. The left and right sides of the bracket body are provided with anti-friction plates to prevent cutting the steel strands of the mixing tower.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] 1. The platform structure of this utility model is simple, has a strong load-bearing capacity, is easy and quick to install, has high safety and high reliability. It can be assembled on the ground and hoisted as a whole after being assembled with the tunnel lining segments. It has high assembly efficiency and is suitable for various types of wind power hybrid tower steel intermediate platforms.

[0019] 2. This utility model, through its innovative corbel structure, can adapt to various installation conditions where the platform beam and the corbel form various angles, and can effectively prevent the corbel from cutting the steel strands, ensuring the versatility, stability and safety of the design. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the platform of this utility model.

[0021] Figure 2 This is a side view of the platform structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the arrangement of the cow leg of this utility model.

[0023] Figure 4 This is a partial schematic diagram of the platform structure of this utility model.

[0024] Figure 5 This is a structural schematic diagram of the platform safety railing of this utility model.

[0025] Figure 6 This is a schematic diagram of the connection between the corbel and the platform beam of this utility model.

[0026] Figure 7 This is a schematic diagram of the hoisting of the platform structure of this utility model. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0028] like Figures 1 to 3 As shown, this embodiment provides a permanent steel platform structure inside a wind power hybrid tower, including a platform beam, multiple brackets 4, a platform panel, and a platform safety railing 6. The platform beam has an overall ring structure. The outer edge of the platform beam is connected to the inner wall of the segments of the hybrid tower 7 through multiple brackets 4. The multiple brackets 4 are arranged on the inner wall of the hybrid tower along the circumference of the hybrid tower, and the axis of each bracket 4 is set along the radial direction of the hybrid tower 7. One end of each bracket 4 is connected to a threaded sleeve 701 pre-embedded on the inner wall of the segment, and the other end is provided with two arc-shaped mounting holes 403 for connecting the main beam assembly. The two arc-shaped mounting holes 403 are arranged in a mirror symmetrical manner. The brackets 4 can be adjusted along the circumference through the two arc-shaped mounting holes 403, thereby adapting to various installation conditions where the platform beam and the brackets 4 form various angles. The platform panel is fixed on the platform beam, and a platform safety railing 6 is provided around the outer edge of the platform beam.

[0029] like Figure 4As shown, the platform beam includes multiple main beam assemblies arranged sequentially. This embodiment uses the upper main beam assembly 1, middle main beam assembly 2, and lower main beam assembly 3 as examples. Each main beam assembly is formed by cross-welding multiple horizontal beams 101 and vertical beams 102 in a #-shaped structure. Hot-rolled H-beams (HN250×125×6×9) can be used. The weld joints are beveled for easy connection, and a backing plate is added at the bottom for non-destructive testing after welding. In actual manufacturing, the position and distance of the horizontal beams 101 and vertical beams 102 can be flexibly adjusted according to the installation location of the electrical cabinet to suit various specifications of electrical cabinets.

[0030] For ease of installation, flange plates 103 are provided at the joints of adjacent main beam components, and the two joint flange plates 103 are connected by bolts and lock nuts 104.

[0031] To facilitate hoisting construction, hoisting studs 106 are installed on the outer edge of the platform beam.

[0032] After the platform structure design was completed, static stress analysis was performed using ANSYS software. Beam elements were used to calculate the deformation and stress of the platform beams. Based on the calculation results, triangular plates 105 were welded at the welded joints of the crossbeam 101 and the longitudinal beam 102 to reduce stress concentration.

[0033] The platform panel is divided into multiple segments 5 according to the multiple main beam components of the platform beam. Each segment 5 corresponds one-to-one with a main beam component, and each segment 5 is fixed to the corresponding main beam component by bolt assembly 501. The segments are made of 4mm thick lentil-shaped patterned steel plates, and the bottom surface of the segments is provided with reinforcing ribs 502, which are also 4mm thick lentil-shaped patterned steel plates.

[0034] like Figure 5 As shown, the platform safety railing 6 is made of ordinary steel pipe bent into shape, with a height of 1200mm. The bottom of the steel pipe is welded with a connecting flange 601, which is connected to the platform beam and platform panel with bolt assemblies.

[0035] like Figure 6As shown, the bracket 4 is welded from Q355B steel plate and includes a bracket body 401 and an anti-friction plate 402. The bracket body 401 is arranged radially along the mixing tower 7, with one end connected to the inner wall of the tube segment and the other end provided with two arc-shaped mounting holes 403 for connecting the platform beam. The two arc-shaped mounting holes 403 are arranged in a mirror symmetrical manner, and the centers of the two arc-shaped mounting holes 403 coincide. Plastic anti-friction plates 402 are provided on the left and right sides of the bracket body 401 to prevent the bracket from rubbing against the steel strands during the operation of the wind turbine, which could cause the steel strands to break. Since the bracket axis passes through the center of the mixing tower, and the platform beam is made of multiple crossbeams and longitudinal beams welded together in a #-shaped structure, its axis does not pass through the center of the mixing tower. Therefore, the angle between the axis of the platform beam and the axis of the bracket is not fixed, which makes the design and installation difficult. In this embodiment, the arc-shaped mounting holes can be used to adapt to the connection of platform beams at various angles.

[0036] The installation method of this utility model is as follows:

[0037] 1. Assemble mixed tower segments;

[0038] 2. Install the bracket directly onto the threaded sleeve pre-embedded in the segment using bolts and large washers;

[0039] 3. Connect the upper, middle and lower main beam components of the platform beam using bolts, lock nuts and washers;

[0040] 4. Use bolts, lock nuts, and washers to fix each segment of the platform panel to the platform beam;

[0041] 5. Use bolts, lock nuts, and washers to connect the platform safety railing to the platform beams and platform panels;

[0042] 6. Use a crane to lift the platform beam and platform panel as a whole to the installation position of the segment bracket, place it on the upper surface of the bracket, and use bolts, lock nuts and washers to fix the platform beam to the bracket. The platform installation is then complete.

[0043] 7. Hoist the entire tunnel segment as a whole, such as... Figure 7 As shown;

[0044] Construction workers stand on this platform to carry out the hoisting and gluing operations for the next ring of tunnel segments, as well as the positioning operations during the hoisting of the tunnel segments.

[0045] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. A windmill hybrid tower inner steel permanent platform structure, characterized in that: The platform beam is in a whole annular structure, and the outer side edges of the platform beam are connected with the inner walls of the segments of the concrete tower through a plurality of corbels, the corbels are arranged on the inner walls of the concrete tower along the circumferential direction of the concrete tower, and the axis of each corbel is arranged along the radial direction of the concrete tower.

2. The windmill hybrid tower inner steel permanent platform structure according to claim 1, characterized in that: The platform beam comprises a plurality of main beam assemblies arranged in sequence, the main beam assemblies are cross-welded by a plurality of cross beams and longitudinal beams, and a bevel convenient for connection is arranged at the welding position.

3. The wind-mix-tower inner steel permanent platform structure according to claim 2, characterized in that: The abutting positions of two adjacent main beam assemblies are provided with flange plates convenient for connection, and the two abutting flange plates are connected through bolts and locking nuts.

4. The windmill hybrid tower inner steel permanent platform structure according to claim 2, characterized in that: The welding positions of the cross beams and the longitudinal beams are provided with triangular plates for reducing stress concentration.

5. The windmill hybrid tower inner steel permanent platform structure according to claim 1, characterized in that: The outer side edges of the platform beam are provided with lifting studs convenient for lifting construction.

6. The windmill hybrid tower inner steel permanent platform structure according to claim 1, characterized in that: The platform panel is cut into a plurality of pieces according to the plurality of main beam assemblies of the platform beam, the plurality of pieces correspond to the plurality of main beam assemblies one by one, and each piece is fixed to the corresponding main beam assembly through a bolt assembly.

7. The windmill hybrid tower inner steel permanent platform structure according to claim 1, characterized in that: The platform panel is a 4mm-thick flat bean pattern steel plate, and the bottom surface of the platform panel is provided with a reinforcing rib plate which is a 4mm-thick flat bean pattern steel plate.

8. The windmill hybrid tower inner steel permanent platform structure according to claim 1, characterized in that: The corbel comprises a corbel body and an anti-friction plate, the corbel body is arranged along the radial direction of the concrete tower, one end of the corbel body is connected with the inner wall of the segment, and the other end of the corbel body is provided with two arc-shaped mounting holes for connecting the platform beam, the two arc-shaped mounting holes are mirror-symmetrically arranged, and the centers of the two arc-shaped mounting holes coincide. The left and right sides of the corbel body are provided with anti-friction plates for preventing the concrete tower steel strands from being cut.

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