Lightning protection equipment of wind generating set

Abstract

The utility model discloses lightning protection equipment of a wind generating set, which comprises a lightning protection placing box body, an upper sealing cover is arranged on the lightning protection placing box body, a plurality of groups of fixing bolts are clamped between the upper sealing cover and the lightning protection placing box body in a threaded manner, and a reinforcing mechanism is arranged on the side wall of the lightning protection placing box body. A limiting mechanism is arranged on the reinforcing mechanism, and the reinforcing mechanism is used for reinforcing the fixing bolt; mechanical locking is formed through clamping of the limiting rod and the limiting groove in the side wall of the fixing bolt, loosening of the bolt caused by vibration or impact is effectively prevented, the design does not depend on friction force between the bolt and a nut, double locking is achieved through physical limiting, and the locking effect is good. And the torsion spring between the rotating shaft and the mounting seat automatically resets after the movable rod rotates, so that the limiting rod is always in close contact with the limiting groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the lightning protection technical field especially is related to a lightning protection equipment of wind generating set. BACKGROUND

[0002] The lightning protection box body is a commonly used internal lightning protection equipment, which mainly protects the internal electrical and electronic equipment from lightning damage during the transportation of the wind generating set. The lightning protection box body is internally provided with a surge protector for limiting transient overvoltage and discharging corresponding transient overcurrent to protect the electrical and electronic equipment from lightning damage.

[0003] In the existing lightning protection equipment of the wind generating set, the upper cover and the box body are fixed by bolts. The bolt fixing mode relies on the friction force and pre-tightening force between the bolt and the nut to maintain the connection. However, during transportation and installation, the bolt may loosen due to factors such as vibration and impact, resulting in reduced connection firmness of the upper cover and the box body. During the long-term operation of the wind generating set, environmental factors such as temperature changes and humidity may cause fatigue of the bolt material, further affecting the connection firmness. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model provides a lightning protection equipment of wind generating set, which forms mechanical locking through the engagement of the limiting rod and the limiting slot on the side wall of the fixing bolt, effectively preventing the loosening of the bolt caused by vibration or impact. This design does not rely on the friction force between the bolt and the nut, but achieves double locking through physical limiting. The torsion spring between the rotating shaft and the mounting seat automatically resets after the movable rod rotates, ensuring that the limiting rod always maintains close contact with the limiting slot.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a lightning protection equipment of wind generating set, comprising a lightning protection placing box body, an upper sealing cover is arranged on the lightning protection placing box body, a plurality of groups of fixing bolts are threadedly clamped between the upper sealing cover and the lightning protection placing box body, a reinforcing mechanism is arranged on the side wall of the lightning protection placing box body, a limiting mechanism is arranged on the reinforcing mechanism, and the reinforcing mechanism reinforces the fixing bolts.

[0006] As a preferred technical scheme of the utility model, the reinforcing mechanism comprises a base fixed on the side wall of the lightning protection placing box body, a mounting seat mounted on the outer wall of the base, a rotating shaft rotatably connected to the outer wall above the mounting seat, a movable rod connected to the outer wall of the rotating shaft, a limiting rod fixed to the outer wall of the movable rod, and a limiting slot opened on the side wall of the fixing bolt.

[0007] As a preferred technical scheme of the utility model, the reinforcing mechanism is provided with four groups, and the four groups of reinforcing mechanisms are correspondingly arranged at the positions of the fixing bolts on the four corners of the lightning protection placing box.

[0008] As a preferred technical scheme of the utility model, the shape of the movable rod is L-shaped, and the movable rod rotates on the mounting base through the rotating shaft.

[0009] As a preferred technical scheme of the utility model, the outer wall of the rotating shaft is provided with a limiting mechanism, and the limiting mechanism limits the rotating position of the rotating shaft.

[0010] As a preferred technical scheme of the utility model, the limiting mechanism comprises an external thread formed on the outer wall of the rotating shaft, an internal thread threadedly connected with the external thread, and a nut provided with the internal thread and sleeved on the external thread.

[0011] As a preferred technical scheme of the utility model, the end surface of the nut in contact with the mounting base is provided with a soft pad, and the outer wall of the nut is provided with an anti-skid pattern.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The limiting rod and the limiting slot on the side wall of the fixing bolt are clamped to form mechanical locking, effectively preventing the loosening of the fixing bolt caused by vibration or impact. This design does not rely on the friction between the fixing bolt and the nut, but realizes double locking through physical limiting. The torsion spring between the rotating shaft and the mounting base is automatically reset after the movable rod rotates, ensuring that the limiting rod always maintains close contact with the limiting slot. Even in a long-term vibration environment, it can maintain stability. The four groups of reinforcing mechanisms correspond to the four corners of the lightning protection placing box, forming uniform stress distribution and avoiding single-point stress concentration, further reducing the risk of loosening of the fixing bolt.

[0014] 2. The limiting mechanism fixes the rotating position of the rotating shaft through the cooperation of the external thread, the internal thread and the nut, preventing the movable rod from being deviated due to external force. The soft pad on the inner wall of the nut increases the friction force of the contact surface, ensuring that the locking is more reliable. The L-shaped design of the movable rod provides a lever effect, enabling the limiting rod to realize a larger locking force with smaller operating force, ensuring that the clamping of the limiting rod and the limiting slot is more closely. The anti-skid pattern on the outer wall of the nut facilitates the tightening of the operator, ensuring that the limiting mechanism can still maintain stability in harsh environments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure perspective state schematic view of the utility model;

[0016] Figure 2 It is a structure front view state schematic view of the utility model;

[0017] Figure 3 It is the reinforcing mechanism structure three-dimensional state schematic view of the utility model;

[0018] Figure 4 It is the reinforcing mechanism and limiting mechanism structure front view section state schematic view of the utility model.

[0019] Wherein the mark is: 1, lightning protection placement box; 2, upper sealing cover; 3, fixed bolt; 4, reinforcing mechanism; 41, base; 42, mounting seat; 43, rotating shaft; 44, movable rod; 45, limiting rod; 46, limiting groove; 5, limiting mechanism; 51, external thread; 52, nut; 53, internal thread. DETAILED DESCRIPTION

[0020] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. The experimental methods in the following embodiments are conventional methods, and the materials, reagents and the like used in the following embodiments are commercially available unless otherwise specified.

[0021] EMBODIMENT:

[0022] As shown in Figures 1-4 A lightning protection equipment of wind generating set, including lightning protection placement box 1, be provided with upper sealing cover 2 on lightning protection placement box 1, be screwed and clamped with several groups of fixed bolt 3 between upper sealing cover 2 and lightning protection placement box 1, be provided with reinforcing mechanism 4 on the side wall of lightning protection placement box 1, be provided with limiting mechanism 5 on reinforcing mechanism 4, reinforcing mechanism 4 is reinforced to fixed bolt 3;

[0023] Reinforcing mechanism 4 includes base 41 fixed on the side wall of lightning protection placement box 1, mounting seat 42 installed on the outer wall of base 41, rotating shaft 43 rotationally connected above the outer wall of mounting seat 42, movable rod 44 connected on the outer wall of rotating shaft 43, limiting rod 45 fixed on the outer wall of movable rod 44, limiting groove 46 opened on the side wall of fixed bolt 3;

[0024] When the worker fixes the upper sealing cover 2 on the lightning protection placing box body 1 through the fixing bolt 3, the movable rod 44 rotates, so that the movable rod 44 drives the rotating shaft 43 to rotate on the mounting seat 42. After the movable rod 44 rotates by ninety degrees, the movable rod 44 drives the limiting rod 45 to move to the position of the limiting groove 46 on the side wall of the fixing bolt 3, and the limiting rod 45 is clamped with the limiting groove 46 to form fixation. A torsion spring is arranged between the rotating shaft 43 and the mounting seat 42. When the fixing bolt 3 is installed, the movable rod 44 is pushed, and the torsion spring is deformed. When the fixing bolt 3 is reinforced, the movable rod 44 is loosened, and the restoring force of the elasticity of the torsion spring pushes the movable rod 44 to restore, and drives the limiting rod 45 to clamp with the limiting groove 46 to reinforce.

[0025] It is worth noting that the reinforcing mechanism 4 is provided with four groups, and the four groups of reinforcing mechanisms 4 are arranged on the fixing bolts 3 at the four corner positions of the lightning protection placing box body 1. The four corners of the lightning protection placing box body 1 are structural weak points, and the four groups of reinforcing mechanisms 4 can uniformly disperse the stress of the fixing bolt 3, so as to avoid stress concentration at a single point to cause sealing failure.

[0026] The shape of the movable rod 44 is L-shaped, and the movable rod 44 rotates on the mounting seat 42 through the rotating shaft 43. The L-shaped movable rod is convenient for manual operation of the worker, and the design of the rotating shaft 43 ensures that the movable rod 44 can rotate smoothly, so as to facilitate the positioning and clamping of the limiting rod 45.

[0027] The outer wall of the rotating shaft 43 is provided with a limiting mechanism 5, which limits the rotating position of the rotating shaft 43. The limiting mechanism 5 ensures that the movable rod 44 stops after rotating to a specific position, so as to avoid damage or failure caused by excessive rotation.

[0028] The limiting mechanism 5 includes an outer thread 51 formed on the outer wall of the rotating shaft 43, an inner thread 53 threadedly connected with the outer thread 51, and a nut 52 provided with the inner thread 53 and sleeved on the outer thread 51.

[0029] When the movable rod 44 drives the limiting rod 45 to clamp with the limiting groove 46, the worker can rotate the nut 52, so that the nut 52 drives the inner thread 53 to rotate inward in cooperation with the outer thread 51 until the soft pad on the inner wall of the nut 52 is attached to the outer wall of the mounting seat 42 and is tightened. The rotation of the rotating shaft 43 is limited, so as to ensure that the rotating shaft 43 will not easily rotate after the movable rod 44 drives the limiting rod 45 to clamp with the limiting groove 46.

[0030] It is worth noting that the end surface of the nut 52 in contact with the mounting seat 42 is provided with a soft pad, and the outer wall of the nut 52 is provided with an anti-skid line. The soft pad can provide buffering when the nut 52 is tightened, reduce damage to the mounting seat 42, and help improve the sealing effect.

[0031] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but are in contact through other features between them. Moreover, first feature "on", "above" and "on" second feature include that first feature is directly above and obliquely above second feature, or only indicates that first feature is higher than second feature in horizontal height. First feature "under", "below" and "under" second feature include that first feature is directly below and obliquely below second feature, or only indicates that first feature is lower than second feature in horizontal height.

[0032] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, these changes and improvements all fall into the scope of the utility model claimed for protection, the scope of protection of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A lightning protection device for a wind turbine generator system, comprising a lightning protection housing (1), characterized in that: The lightning protection box (1) is provided with an upper sealing cover (2), a plurality of groups of fixing bolts (3) are screwed between the upper sealing cover (2) and the lightning protection box (1), a reinforcing mechanism (4) is arranged on the side wall of the lightning protection box (1), a limiting mechanism (5) is arranged on the reinforcing mechanism (4), and the reinforcing mechanism (4) reinforces the fixing bolts (3).

2. A lightning protection device for a wind turbine generator according to claim 1, characterized in that: The reinforcing mechanism (4) comprises a base (41) fixed on the side wall of the lightning protection box (1), a mounting seat (42) mounted on the outer wall of the base (41), a rotating shaft (43) rotatably connected above the outer wall of the mounting seat (42), a movable rod (44) connected to the outer wall of the rotating shaft (43), a limiting rod (45) fixed to the outer wall of the movable rod (44), and a limiting groove (46) formed in the side wall of the fixing bolt (3).

3. A lightning protection device for a wind turbine generator according to claim 2, characterized in that: The reinforcing mechanism (4) is provided with four groups, and the four groups of reinforcing mechanisms (4) are arranged on the fixing bolts (3) at the four corner positions of the lightning protection box (1).

4. A lightning protection device for a wind turbine generator according to claim 2, characterized in that: The movable rod (44) is L-shaped, and the movable rod (44) rotates on the mounting seat (42) through the rotating shaft (43).

5. A lightning protection device for a wind turbine generator according to claim 2, characterized in that: The outer wall of the rotating shaft (43) is provided with a limiting mechanism (5), and the limiting mechanism (5) limits the rotating position of the rotating shaft (43).

6. A lightning protection device for a wind turbine generator according to claim 5, characterized in that: The limiting mechanism (5) comprises an outer thread (51) formed on the outer wall of the rotating shaft (43), an inner thread (53) threadedly connected with the outer thread (51), and a nut (52) provided with the inner thread (53) and sleeved on the outer thread (51).

7. A lightning protection device for a wind turbine generator according to claim 6, characterized in that: The end surface of the nut (52) in contact with the mounting seat (42) is provided with a soft pad, and the outer wall of the nut (52) is provided with an anti-skid line.

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