A mobile prefabricated wind turbine platform

Abstract

A mobile prefabricated ventilation platform, belonging to the field of ventilation and smoke dispersal construction technology for underground cavern tunnels, includes a frame body. The bottom of the frame body is connected to wheels, and the top of the frame body is connected to a movable mounting frame via a height adjustment assembly. Cantilever frames are hinged to both ends of the mounting frame, and telescopic components are connected to the bottom of the cantilever frames. The telescopic components are fixed to the frame body, and the output shaft of the telescopic components is hinged to the bottom of the cantilever frames. This ventilation platform can meet the usage requirements of different fans in different stages of ventilation and smoke dispersal in underground cavern tunnels. It is simple to manufacture, safe and stable, and has high applicability and economic benefits.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation and smoke dissipation construction technology for underground cavern tunnels, and relates to the construction of underground cavern groups in water conservancy and hydropower projects, particularly a mobile prefabricated fan platform. Background Technology

[0002] Pumped storage is currently the most technologically mature, economically optimal, and best suited for large-scale development of a green, low-carbon, clean, and flexible power source for power systems. It works well in conjunction with wind power, solar power, nuclear power, and thermal power. Accelerating the development of pumped storage is an urgent requirement for building a new type of power system dominated by new energy sources, an important support for ensuring the safe and stable operation of the power system, and a crucial guarantee for the large-scale development of renewable energy.

[0003] Ventilation and smoke dispersal during the construction of complex underground cavern complexes has always been a difficult problem in pumped storage underground engineering construction, involving occupational health and work environment safety risks. At the same time, improving tunnel ventilation and smoke dispersal technology can also improve construction efficiency, reduce construction costs, and enhance the market competitiveness of enterprises.

[0004] During the construction of the underground cavern complex, the ventilation and smoke dispersal system needs to be arranged in stages. The first stage involves single-face construction, while the second stage involves multiple workfaces or large caverns. The ventilation requirements differ in each stage, resulting in different sizes of fans and corresponding fan platform dimensions. Furthermore, due to the large number of ventilation and smoke dispersal points in the underground cavern complex, the fan platforms have limited commonality, leading to inconsistent fan platform dimensions during project construction. This necessitates increasing the number of fan platforms to meet construction requirements.

[0005] Therefore, in order to increase the applicability of wind turbine platforms and reduce the number of wind turbine platforms during project construction, this utility model proposes a mobile prefabricated wind turbine platform. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a mobile prefabricated fan platform to solve the technical problem that the fixed size of the fan platform in the project construction process cannot meet the usage requirements of ventilation and smoke dissipation points of different underground cavern groups, thus requiring the use of fan platforms of different specifications.

[0007] To achieve the above and other related objectives, this utility model provides a mobile prefabricated fan platform, including a frame body. The bottom of the frame body is connected to a traveling wheel, and the top of the frame body is connected to a vertically movable mounting frame via a height adjustment component. The mounting frame has cantilever frames hinged at both ends, and the bottom of the cantilever frames is connected to a telescopic component. The telescopic component is fixed to the frame body, and the output shaft of the telescopic component is hinged to the bottom of the cantilever frame.

[0008] Preferably, in any of the above embodiments, the main body of the frame is a trapezoidal structure, and the main body of the frame is welded from I-beams.

[0009] In any of the above embodiments, it is preferred that each surface of the frame body is provided with two sets of support members arranged vertically, and each set of support members includes two diagonally arranged cross braces.

[0010] Preferably, in any of the above embodiments, the height adjustment component includes a threaded rod, which is driven to rotate by a drive motor. The two ends of the threaded rod are symmetrically provided with smooth threaded sections, and the threaded rod has two threaded sections with opposite thread directions, which are symmetrical about the center of the threaded rod.

[0011] In any of the above embodiments, a preferred embodiment is that a connecting block is fixed to the upper surface end of the frame body, the connecting block has a hole in the middle and is connected to a bearing, and the suspended end of the threaded rod extends into the bearing and is rotatably connected to the connecting block.

[0012] In any of the above embodiments, it is preferred that a fixing block is fitted on each of the two smooth threaded segments, and a first rotating rod is hinged to the upper surface of each fixing block, the other end of the first rotating rod being hinged to the bottom of the mounting frame.

[0013] In any of the above embodiments, it is preferred that each of the two threaded segments is threadedly connected to a movable block, the two movable blocks are symmetrically arranged about the center line of the threaded rod, and a second rotating rod is hinged to the upper surface of each movable block. The other end of the second rotating rod is hinged to the bottom of the mounting frame, and the hinge points of the first rotating rod and the second rotating rod to the bottom of the mounting frame are the same.

[0014] In any of the above embodiments, it is preferred that the telescopic component is an electric telescopic rod, the bottom of which is fixed to the frame body, and the output shaft of which is hinged to the bottom of the cantilever frame.

[0015] As described above, the mobile prefabricated fan platform of this utility model has the following beneficial effects:

[0016] 1. In this utility model, during the construction of underground cavern group ventilation and smoke dispersion, it can meet the usage requirements of fans of different sizes, heights and power, and can adjust the height and length of the fan platform to meet the usage requirements of ventilation and smoke dispersion at different stages of construction, thereby increasing the applicability of the fan platform.

[0017] 2. In this utility model, by setting the walking wheels, compared with the traditional mode, the wind turbine platform can be moved to the required position as needed, saving the labor of manual dismantling, moving and fixing, reducing labor intensity, and improving safety during the movement process.

[0018] 3. In this utility model, the wind turbine platform adopts an assembled structure, and all components are connected using standard parts, which enables the wind turbine platform to be quickly installed and disassembled. After the platform is used, it can be used in other parts or projects, which can meet the requirements of wind turbine reuse and save construction costs. Attached Figure Description

[0019] Figure 1 The diagram shown is a structural schematic of this utility model.

[0020] Component designation explanation

[0021] 1-Frame body; 101-Diagonal brace; 2-Walking wheel; 3-Mounting frame; 4-Cantilever frame; 5-Telescopic component; 6-Threaded rod; 7-Drive motor; 8-Smooth threaded section; 9-Threaded section; 10-Connecting block; 11-Fixing block; 12-First rotating rod; 13-Moving block; 14-Second rotating rod. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0023] Please see Figure 1 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0024] Please see Figure 1 This utility model provides a mobile prefabricated fan platform, including a frame body 1. The frame body 1 adopts a trapezoidal structure, with a wider bottom and a narrower top. To ensure the overall stability of the fan frame, two sets of support members are provided on each side of the frame body 1, with each set of support members including two intersecting diagonal braces 101.

[0025] To ensure the applicability of the fan, it is designed as a mobile and modular structure. In the traditional model, the support columns are generally pre-embedded in the foundation concrete. To ensure that the fan can be deployed to other locations at any time, thereby saving labor for dismantling, moving, and installing, reducing labor intensity, and improving safety during movement, this embodiment replaces the bottom of the platform with a wheeled walking mechanism. Specifically, walking wheels 2 are connected to the four corners of the bottom of the frame body 1. When movement is required, the walking wheels 2 are used for movement, and a braking device is used to lock them in place.

[0026] Meanwhile, since the dimensions of the wind turbines vary at different stages of construction, different requirements apply to the dimensions of the wind turbine platform. In this embodiment, a height adjustment component and a cantilever frame 4 are used to adjust the height and length of the wind turbine frame. Specifically, a height adjustment component at the top of the main frame 1 moves the mounting frame 3 up and down to meet different height requirements. Simultaneously, cantilever frames 4 are hinged to both ends of the mounting frame 3, and the cantilever frames 4 are supported by telescopic components 5. The telescopic components 5 are fixed to the main frame 1. When support for the cantilever frame 4 is needed, the telescopic components 5 are activated, extending the output shaft and rotating the cantilever frame 4 until it is parallel to the mounting frame 3, at which point the telescopic components 5 stop, thus lengthening the mounting frame 3 to meet the installation and use requirements of wind turbines of different sizes. When the cantilever frame 4 is not needed, the telescopic components 5 are activated, shortening the output shaft and rotating the cantilever frame 4 downwards, thus retracting the cantilever frame 4 and preventing it from occupying too much space and affecting the normal use of the wind turbine platform. Meanwhile, the telescopic component 5 also ensures that the cantilever frame 4 and the mounting frame 3 move synchronously.

[0027] In this embodiment, the bottom dimensions of the frame body 1 are 2.1m*4.4m, and the height of the frame body 1 is 3.4m.

[0028] In this embodiment, the frame body 1 is bolted together using I18 I-beams, and the diagonal brace 101 is made of L50 angle steel.

[0029] In this embodiment, the telescopic component 5 is an electric telescopic rod, but it is not limited to electric telescopic rods. Other telescopic structures that can be length-adjustable are also acceptable, such as hydraulic telescopic rods, pneumatic telescopic rods, etc.

[0030] As a further description of the above embodiment, the height adjustment assembly includes a threaded rod 6, which is driven to rotate by a drive motor 7. Smooth threaded sections 8 are symmetrically provided at both ends of the threaded rod 6, and fixing blocks 11 are respectively fitted onto the smooth threaded sections 8. The two fixing blocks 11 are symmetrically arranged about the center of the threaded rod 6. A first rotating rod 12 is hinged to the upper surface of each fixing block 11, and the other end of the first rotating rod 12 is hinged to the bottom of the mounting bracket 3.

[0031] Two threaded segments 9 with opposite thread directions are symmetrically arranged about the centerline of the threaded rod 6. Each threaded segment 9 is threadedly connected to a movable block 13, which is symmetrically arranged about the centerline of the threaded rod 6. A second rotating rod 14 is hinged to the upper surface of each movable block 13. The other end of the second rotating rod 14 is hinged to the bottom of the mounting frame 3. The hinge points of the first rotating rod 12 and the second rotating rod 14 to the bottom of the mounting frame 3 are the same.

[0032] When the height of the mounting bracket 3 needs to be adjusted, the drive motor 7 is started. The drive motor is a forward and reverse motor. The rotation of the drive motor 7 drives the threaded rod 6 to rotate. The rotation of the threaded rod 6 drives the two moving blocks 13, which are threadedly connected to the threaded rod 6, to move in opposite directions along the length of the threaded rod 6. During the movement of the moving blocks 13, the second rotating rod 14, which is hinged to the moving blocks 13, rotates at the same time. The rotation of the second rotating rod 14 drives the mounting bracket 3 to move up and down, thereby realizing the adjustment of the height of the mounting bracket 3.

[0033] In this embodiment, the first rotating rod 12 rotates synchronously while the second rotating rod 14 rotates, thereby improving the stability of the mounting frame 3 during its up-and-down movement.

[0034] To provide support for the threaded rod 6 and ensure its horizontal rotation under the action of the drive motor 7, in this embodiment, a connecting block 10 is fixedly connected to the upper end of the frame body 1. The connecting block 10 has a hole in its center and a bearing is connected thereto. The suspended end of the threaded rod 6 extends into the bearing and is rotatably connected to the connecting block 10. The bearing reduces the friction between the threaded rod 6 and the fixed block 11, thereby reducing frictional loss and reducing the force required to rotate the threaded rod 6. This extends the service life of the threaded rod 6 while saving energy.

[0035] In this embodiment, in order to prevent the fixing block 11 from sliding during the rotation of the threaded rod 6, the bottom of the fixing block 11 is fixedly connected to the top of the frame body 1.

[0036] In another embodiment of this invention, the output end of the telescopic member 5 is detachably hinged to the bottom of the cantilever frame 4. When the cantilever frame 4 is not needed, the telescopic member 5 can be separated from the cantilever frame 4; when the cantilever frame 4 is needed, after the mounting frame 3 is moved to the required height, the telescopic member 5 and the cantilever frame 4 are hinged, and the telescopic member 5 is activated to keep the cantilever frame 4 and the mounting frame 3 horizontal.

[0037] In summary, the construction steps for a mobile prefabricated fan frame are as follows:

[0038] 1. At the steel bar processing plant, materials are cut according to the structural dimensions of the wind turbine platform, and standard parts are made. The components are transported to the construction site by dump trucks. The main body 1 of the wind turbine platform frame, the mounting frame 3 and the cantilever frame 4 are assembled on site. During the assembly process, they are firmly connected by bolts.

[0039] 2. The mounting bracket 3 is connected to the top of the main body 1 of the wind turbine platform frame via a height adjustment component.

[0040] 3. Finally, install the cantilever frame 4. The cantilever frame 4 and the mounting frame 3 are connected by a movable hinge. The lower part is equipped with a telescopic component 5. When in use, the telescopic component 5 can be used to support the frame in place.

[0041] Project Example:

[0042] A pumped storage power station is planned to have an installed capacity of 1200MW, and will be equipped with four reversible pump-turbine generator units with a single unit capacity of 300MW. The underground powerhouse system construction adopted a three-phase ventilation construction plan. Phase I was the ventilation and smoke dissipation stage of the underground cavern excavation and support construction before the powerhouse was connected to the ventilation and safety tunnel and the traffic tunnel, the main transformer tunnel was not connected to the main transformer ventilation branch tunnel and the traffic tunnel, the tailgate chamber was not connected to the main transformer tunnel passage and the tailgate transport tunnel, the tailwater tunnel outlet was not connected, the water diversion upper horizontal tunnel inlet was not connected, and the upstream surge tank was not connected. Phase II was the middle stage of underground cavern excavation and support construction, mainly the formation of the powerhouse exhaust shaft, the connection of the powerhouse between the ventilation tunnel and the traffic tunnel, the connection of the main transformer tunnel between the main transformer ventilation branch tunnel and the traffic tunnel, the connection of the tailgate chamber between the tailgate chamber and the main transformer tunnel passage and the tailgate transport tunnel, the connection of the tailwater tunnel outlet, and the underground cavern excavation and support construction after the water diversion upper horizontal tunnel inlet was not connected and the upstream surge tank was connected. Phase III was the stage of ventilation and smoke dissipation of the underground cavern excavation and support construction after all major caverns of the underground cavern system were connected and the excavation was basically completed.

[0043] The layout of ventilation and smoke dispersal equipment differs across the three phases, primarily due to adjustments in the size of the fans in the first and second phases of the ventilation safety tunnel, the addition of ventilation at the entrance of the exploration tunnel in the second phase, ventilation in the drainage corridor, and adjustments to the location of ventilation equipment in the tailgate chambers of the first and second phases. This necessitates the use of fan frames of different sizes during construction.

[0044] By adopting this new mobile prefabricated fan platform, the fan frames of all parts can be manufactured uniformly, achieving standardization in fan platform fabrication. After the upper drainage corridor is constructed, the fan frames can be immediately transferred to the middle and lower drainage corridors for use. When the No. 2 construction adit enters the main tunnel for construction, and the fan size needs to be adjusted, this new fan platform allows for easy adjustment of the platform height and length to meet the fan's usage requirements, eliminating the need for reprocessing the fan frames. Through structural improvements to the fan platform, standardized fabrication of the fan platform structure on the construction site is achieved, enhancing the versatility of the fan frames and thus saving construction costs, which is highly beneficial for standardized construction on the site.

[0045] In summary, the fan platform of this invention can meet the usage requirements of different fans when facing different stages of ventilation and smoke dissipation in underground cavern groups. It is simple to manufacture, safe and stable, and has high applicability and economic benefits. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A mobile assembled fan platform, comprising a rack main body (1), the bottom of which is connected with walking wheels (2), characterized in that: The top of the frame body (1) is connected to a movable mounting frame (3) via a height adjustment component. The mounting frame (3) is hinged to two ends with cantilever frames (4). The bottom of the cantilever frames (4) is connected to a telescopic component (5). The telescopic component (5) is fixed to the frame body (1). The output shaft of the telescopic component (5) is hinged to the bottom of the cantilever frame (4).

2. The mobile prefabricated fan platform according to claim 1, characterized in that: The frame body (1) is a trapezoidal structure, and the frame body (1) is welded from I-beams.

3. The mobile prefabricated fan platform according to claim 1, characterized in that: The frame body (1) has two sets of support members arranged vertically on each side, and each set of support members includes two diagonal braces (101) arranged in a cross pattern.

4. The mobile prefabricated fan platform according to claim 1, characterized in that: The height adjustment assembly includes a threaded rod (6), which is driven to rotate by a drive motor (7). The two ends of the threaded rod (6) are symmetrically provided with smooth threaded sections (8). The threaded rod (6) is provided with two threaded sections (9) with opposite thread directions. The two threaded sections (9) are symmetrical about the center of the threaded rod (6).

5. The mobile prefabricated fan platform according to claim 4, characterized in that: A connecting block (10) is fixed to the upper end of the frame body (1). The connecting block (10) has a hole in the middle and is connected to a bearing. The suspended end of the threaded rod (6) extends into the bearing and is rotatably connected to the connecting block (10).

6. The mobile prefabricated fan platform according to claim 4, characterized in that: Each of the two smooth threaded segments (8) is fitted with a fixing block (11), and the upper surface of each fixing block (11) is hinged with a first rotating rod (12), the other end of which is hinged to the bottom of the mounting frame (3).

7. The mobile prefabricated fan platform according to claim 6, characterized in that: Each of the two threaded segments (9) is threaded with a movable block (13). The two movable blocks (13) are symmetrically arranged about the center line of the threaded rod (6). A second rotating rod (14) is hinged to the upper surface of each movable block (13). The other end of the second rotating rod (14) is hinged to the bottom of the mounting frame (3). The hinge points of the first rotating rod (12) and the second rotating rod (14) are the same as the hinge points of the bottom of the mounting frame (3).

8. The mobile prefabricated wind turbine platform according to claim 1, characterized in that: The telescopic component (5) is an electric telescopic rod. The bottom of the electric telescopic rod is fixed to the frame body (1), and the output shaft of the electric telescopic rod is hinged to the bottom of the cantilever frame (4).

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