Wind turbine generator hub overhaul protective fence

Abstract

The utility model relates to the technical field of wind turbine generator hub maintenance. The wind turbine generator hub overhaul protective fence comprises a hub shell, and a protective fence structure is arranged on the outer surface of the hub shell; and the guardrail structure comprises a side guardrail, a fixing plate and a connecting rod, and the side guardrail is fixedly connected to the outer surface of the hub shell. According to the safety rope buckle, the connecting ring is arranged to be connected with the safety rope buckle, a worker can pull the connecting rod to move in the connecting groove when moving, the connecting rod can be clamped in the multiple sets of limiting grooves in sequence when moving, and the position of the connecting rod is fixed; the connecting grooves and the multiple sets of limiting grooves are arranged in an arc shape, when a worker climbs the climbing rod and falls off due to slipping, the connecting rods can be clamped into the multiple sets of limiting grooves through vertically-downward acting force, the manual falling distance can be shortened as much as possible, and the safety of manual climbing and using can be improved as much as possible through the design.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine hub maintenance technology; more specifically, it relates to wind turbine hub maintenance guardrails. Background Technology

[0002] A wind turbine is a device that converts wind energy into electrical energy. It uses the movement of wind to rotate turbine blades, which in turn drives a generator to produce electricity. During use, it is necessary to regularly check the blades for wear, cracks or other damage, and to ensure that the hub runs smoothly. The hub is located at the top of the wind turbine tower, and maintenance personnel need to work inside or outside the hub, so safety railings are required to protect the safety of workers.

[0003] Currently, existing wind turbine hub maintenance guardrails have several drawbacks. Some guardrails lack fall protection structures, requiring workers to attach safety ropes to the steps before climbing. This necessitates removing the safety ropes after each step and attaching them to the next step, creating a safety hazard during the intervals between rope removal. Therefore, wind turbine hub maintenance guardrails are urgently needed to address these issues. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a wind turbine hub maintenance guardrail to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a wind turbine hub maintenance guardrail, comprising:

[0006] A wheel hub shell, wherein a guardrail structure is provided on the outer surface of the wheel hub shell;

[0007] The guardrail structure includes a side guardrail, a fixing plate, and a connecting rod, wherein the side guardrail is fixedly connected to the outer surface of the wheel hub shell.

[0008] Preferably, climbing rods are fixedly connected to the inner surface of the side railing, and multiple sets of climbing rods are provided. A fixing plate is fixedly connected to the upper surface of one side of the side railing. The side railing, the fixing plate, and the multiple sets of climbing rods are all made of aluminum alloy. Because it has a natural oxide film, it can resist moisture and salt spray corrosion, and there is no need to apply an additional coating. It is also lightweight, which can reduce the increased load on the wind turbine.

[0009] Preferably, the fixing plate has a connecting groove inside, and the fixing plate also has a limiting groove inside, and there are multiple sets of limiting grooves. The connecting groove is arc-shaped, and the multiple sets of limiting grooves are also arranged in an arc shape along the connecting groove as the path.

[0010] Preferably, all of the multiple sets of limiting grooves are formed at the lower end of the connecting groove, and all of the multiple sets of limiting grooves are connected to the interior of the connecting groove, and the size of the multiple sets of limiting grooves is adapted to the size of the connecting groove.

[0011] Preferably, a connecting rod is inserted into one end of the connecting groove, and the diameter of the connecting rod is adapted to the size of the connecting groove, and the diameter of the connecting rod is adapted to the size of the multiple sets of limiting grooves. The connecting rod can slide inside the connecting groove, and the connecting rod can be engaged inside the multiple sets of limiting grooves, which can prevent the connecting rod from moving.

[0012] Preferably, a first limiting plate is fixedly connected to the outer surface of the middle position of the connecting rod, and a second limiting plate is fixedly connected to one end of the connecting rod. The surfaces of the first limiting plate and the second limiting plate on opposite sides are respectively attached to the outer surfaces of the two sides of the fixed plate. A connecting ring is hinged to the inside of the other end of the connecting rod. The first limiting plate and the second limiting plate can limit the connecting rod, reduce the amplitude of the connecting rod shaking inside the connecting groove, and prevent the connecting rod from leaving the inside of the connecting groove.

[0013] The technical effects and advantages of this utility model are as follows: By using aluminum alloy as the material for the side guardrail, fixing plate and multiple climbing poles, this utility model can improve its oxidation resistance, maintain a certain strength, reduce its weight, reduce the load on the wind turbine, and make the whole equipment easier to install and disassemble.

[0014] This invention allows for connection with a safety rope buckle via a connecting ring. Workers can pull the connecting rod within the connecting groove during movement, and the rod can be sequentially engaged with multiple sets of limiting grooves to fix its position. The connecting groove and the multiple sets of limiting grooves are arranged in an arc shape. In the event of a worker falling while climbing the climbing pole, the connecting rod can be engaged with the multiple sets of limiting grooves through a downward vertical force, thus minimizing the fall distance. This design maximizes safety during manual climbing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the guardrail structure of this utility model.

[0018] Figure 4 This is a partial exploded view of the three-dimensional structure of the guardrail structure of this utility model.

[0019] Figure 5 This is a partial exploded view of the three-dimensional structure of the guardrail structure of this utility model.

[0020] The attached figures are labeled as follows: 1. Hub shell; 2. Guardrail structure; side guardrail (21), side guardrail; climbing rod (22), climbing rod; fixing plate (23), fixing plate; connecting groove (24), connecting groove; limiting groove (25), limiting groove; connecting rod (26), connecting rod; first limiting plate (27), first limiting plate; second limiting plate (28), second limiting plate; connecting ring (29), connecting ring. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The wind turbine hub maintenance guardrail involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] like Figures 1 to 3 As shown, this utility model provides a wind turbine hub maintenance guardrail, including: a hub shell 1, a guardrail structure 2 provided on the outer surface of the hub shell 1, the guardrail structure 2 including a side guardrail 21, a fixing plate 23 and a connecting rod 26, the side guardrail 21 being fixedly connected to the outer surface of the hub shell 1, and climbing rods 22 being fixedly connected to the inner surface of the side guardrail 21, and multiple sets of climbing rods 22 being provided, and a fixing plate 23 being fixedly connected to the upper surface of one side of the side guardrail 21, the fixing plate 23 and the multiple sets of climbing rods 22 are all made of aluminum alloy, because it has a natural oxide film, which can resist moisture and salt spray corrosion, eliminating the need for additional coating, and is lightweight, which can reduce the added load on the wind turbine, and make the whole equipment easier to install and disassemble, while maintaining a certain strength and improving the safety of workers when climbing.

[0024] Example 2

[0025] like Figures 4 to 5As shown, this embodiment also proposes that: a connecting groove 24 is provided inside the fixing plate 23, and a limiting groove 25 is also provided inside the fixing plate 23. Multiple sets of limiting grooves 25 are provided, all located at the lower end of the connecting groove 24, and all sets of limiting grooves 25 communicate with the interior of the connecting groove 24. The dimensions of the multiple sets of limiting grooves 25 are adapted to the dimensions of the connecting groove 24. A connecting rod 26 is inserted into one end of the connecting groove 24, and the diameter of the connecting rod 26 is the same as the diameter of the connecting groove 24. The connecting rod 26 is compatible with the diameter of the multiple limiting grooves 25. A first limiting plate 27 is fixedly connected to the outer surface of the middle position of the connecting rod 26, and a second limiting plate 28 is fixedly connected to one end of the connecting rod 26. The surfaces of the first limiting plate 27 and the second limiting plate 28 on opposite sides are respectively attached to the outer surfaces of the two sides of the fixing plate 23. A connecting ring 29 is hinged to the other end of the connecting rod 26. The connecting groove 24 is arc-shaped, and the multiple limiting grooves 25 are also... The connecting rods 26 are arranged in an arc shape along the connecting groove 24. They can slide inside the connecting groove 24 and can be engaged inside the multiple sets of limiting grooves 25. This prevents the connecting rods 26 from moving. The first limiting plate 27 and the second limiting plate 28 limit the connecting rods 26, reducing the amplitude of shaking inside the connecting groove 24 and preventing them from detaching from the connecting groove 24. When using the climbing poles 22, workers can attach safety ropes to the connecting rings 29 and wear an additional set of safety ropes. They can also attach another set of safety ropes to the outer surface of the multiple climbing poles 22 to further improve climbing safety. If a worker falls while climbing the climbing poles 22, their own weight can pull the connecting rods 26. Then, the connecting rods 26 can be engaged inside the multiple sets of limiting grooves 25 by a downward vertical force, thus minimizing the distance of the fall and securing the worker's position in time.

[0026] Working principle: When using the equipment, the worker first climbs out from the top of the wind turbine tower, then attaches the safety rope to the inside of the connecting ring 29, and then climbs to the entrance of the hub housing 1 through multiple sets of climbing poles 22. During the climb, as the worker's position changes, the connecting rod 26 can be pulled to move inside the connecting groove 24. After moving a certain distance, the connecting rod 26 can be locked inside the limiting groove 25 to limit the connection rod 26. If the worker accidentally falls during the climb, the worker's own weight can pull the connecting rod 26. Then, the connecting rod 26 can be locked inside the multiple sets of limiting grooves 25 through the vertical downward force, which can minimize the distance of the fall. The above is the complete working principle of this utility model.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wind turbine hub maintenance guardrail, characterized in that, include: A hub shell (1) is provided with a guardrail structure (2) on its outer surface. The guardrail structure (2) includes a side guardrail (21), a fixing plate (23) and a connecting rod (26), and the side guardrail (21) is fixedly connected to the outer surface of the hub shell (1).

2. The wind turbine hub maintenance guardrail according to claim 1, characterized in that: A climbing rod (22) is fixedly connected to the inner surface of the side railing (21), and multiple sets of climbing rods (22) are provided. A fixing plate (23) is fixedly connected to the upper surface of one side of the side railing (21).

3. The wind turbine hub maintenance guardrail according to claim 2, characterized in that: The fixing plate (23) has a connecting groove (24) inside, and a limiting groove (25) is also provided inside the fixing plate (23), and multiple sets of limiting grooves (25) are provided.

4. The wind turbine hub maintenance guardrail according to claim 3, characterized in that: Multiple sets of the limiting grooves (25) are all opened at the lower end of the connecting groove (24), and multiple sets of limiting grooves (25) are all connected to the interior of the connecting groove (24), and the size of multiple sets of limiting grooves (25) is adapted to the size of the connecting groove (24).

5. The wind turbine hub maintenance guardrail according to claim 4, characterized in that: A connecting rod (26) is inserted into one end of the connecting groove (24), and the diameter of the connecting rod (26) is adapted to the size of the connecting groove (24), and the diameter of the connecting rod (26) is adapted to the size of the multiple sets of limiting grooves (25).

6. The wind turbine hub maintenance guardrail according to claim 1, characterized in that: A first limiting plate (27) is fixedly connected to the outer surface of the middle position of the connecting rod (26), and a second limiting plate (28) is fixedly connected to one end of the connecting rod (26). The surfaces of the first limiting plate (27) and the second limiting plate (28) on opposite sides are respectively attached to the outer surfaces of both sides of the fixing plate (23). A connecting ring (29) is hinged to the other end of the connecting rod (26).

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