Bolt loosening prevention auxiliary device for wind driven generator

Abstract

The utility model discloses a wind driven generator bolt loosing prevention auxiliary device, which comprises a plate body, a connecting assembly, a base plate and a bolt, the plate body comprises a square plate, four corners of the square plate are provided with threaded holes, the plate body is provided with a hexagonal through groove and two through holes, and the through holes are internally provided with anti-skidding sleeves. The six side walls of the hexagonal through groove of the plate body are fixedly connected with spring plates, and an annular ring is defined by the six spring plates. The spring plates are extruded, so that the surfaces of the spring plates make close contact, reaction is generated to clamp the bolts, rotation of the bolts is effectively limited through tooth grooves in the spring plates, mechanical vibration can be effectively reduced through cooperation of the spring plates and the base plates, elastic deformation of the spring plates and energy absorption of the damping plates, and therefore the bolts are prevented from loosening; through the damping plate, the influence of vibration generated when the wind driven generator works on the bolt is effectively relieved, a recess is formed between the bolt and the installation face through the protruding block when the bolt rotates, and extra torque can be generated to resist looseness.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to an auxiliary device for preventing bolt loosening for a wind turbine. Background Technique

[0002] When a wind turbine is in operation, it will be affected by wind force. Over time, the pre-tightening force of the bolts may gradually be lost, especially after experiencing multiple vibrations and load changes, which will also cause the bolts to loosen. The wind force will cause the equipment to vibrate. Under the action of this vibration for a long time, the bolts of the equipment are prone to loosen. In order to ensure the fastening effect of the bolts and prevent loosening, an auxiliary device for preventing bolt loosening is required.

[0003] Currently, for the treatment of bolt loosening, generally by applying thread locking glue or using different fasteners, such as: double nuts or suspended nuts. The processing cost of suspended nuts is relatively high and it is not convenient to use; after the thread locking glue is cured, it can firmly bond the mating threads. However, with exposure to wind and sun, the thread locking glue will be eroded and aged, resulting in bolt loosening, which reduces the practicality and economy of the existing auxiliary device for preventing bolt loosening. Summary of the Utility Model

[0004] An auxiliary device for preventing bolt loosening for a wind turbine of the utility model, by squeezing the spring plate, makes the surface of the spring plate in close contact, generates a reaction force to clamp the bolt, effectively restricts the rotation of the bolt through the tooth grooves on the spring plate, and through the cooperation of the spring plate and the backing plate, through the elastic deformation of the spring plate and the energy absorption of the damping plate, can effectively reduce mechanical vibration, thereby preventing bolt loosening.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] An auxiliary device for preventing bolt loosening for a wind turbine, comprising a plate body, a connection assembly, a backing plate and a bolt. The plate body includes a square plate, threaded holes are opened at four corners of the square plate, a hexagonal through groove is opened on the plate body, and two through holes are opened on the plate body, and anti-slip sleeves are arranged in the through holes.

[0007] Spring plates are fixedly connected to six side walls of the hexagonal through groove of the plate body, the six spring plates enclose an annular ring, and the bolt is fitted in the annular ring;

[0008] The connection assembly includes a disc, a connecting rod is fixedly connected to the top end surface of the disc, an anti-slip sleeve is fitted on the connecting rod, a round rod is fixedly connected to the top end of the connecting rod, and a cable tie is fixedly connected to the top end of the round rod.

[0009] Preferably, the backing plate includes a damping plate, convex blocks are arranged on the end face of the damping plate, and grooves are opened on the convex blocks.

[0010] Preferably, a through - opening is formed in the damping plate, and the screw of the bolt is fitted in the through - opening, and the top surface of the damping plate is lapped on the bottom surface of the square plate.

[0011] Preferably, the top surface of the disc is lapped on the bottom surface of the square plate.

[0012] Preferably, both the round rod and the connecting rod are fitted in the through - hole.

[0013] Preferably, a tooth groove is formed in the spring plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. Extruding the spring plate makes the surfaces of the spring plate in close contact, generating a reaction force to clamp the bolt. The rotation of the bolt is effectively restricted through the tooth groove on the spring plate. Through the cooperation of the spring plate and the backing plate, the elastic deformation of the spring plate and the energy absorption of the damping plate can effectively reduce mechanical vibration, thereby preventing the bolt from loosening.

[0016] 2. Through the damping plate, the influence of the vibration during the operation of the wind turbine on the bolt is effectively reduced, and a depression is formed between the bolt and the mounting surface when the bolt rotates through the convex block, which can generate an additional torque to resist loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the top structure of the auxiliary device for preventing bolt loosening;

[0018] Figure 2 Schematic diagram of the bottom structure of the auxiliary device for preventing bolt loosening;

[0019] Figure 3 Schematic diagram of the plate body and the clamp block of the utility model;

[0020] Figure 4 Schematic diagram of the backing plate structure of the utility model;

[0021] Figure 5 Schematic diagram of the cable tie and the connection assembly of the utility model;

[0022] Figure 6 For the utility model Figure 5 Partial enlarged structure schematic diagram at A in.

[0023] In the figure: 1. Plate body; 101. Square plate; 102. Through - hole; 103. Threaded hole; 2. Spring plate; 3. Connection assembly; 301. Disc; 302. Connecting rod; 303. Anti - slip sleeve; 304. Round rod; 4. Cable tie; 5. Backing plate; 501. Damping plate; 502. Convex block; 503. Through - opening; 504. Groove; 6. Bolt. DETAILED DESCRIPTION OF THE INVENTION

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0025] Referring to Figures 1-6 , an auxiliary device for preventing bolt loosening for a wind turbine is applied to the auxiliary work of preventing bolt loosening during the installation of a wind turbine. The nut end of the bolt 6 is clamped by the spring plate 2, and the friction force on its surface is increased through the tooth grooves. At the same time, the spring plate 2 absorbs the vibration of the bolt 6 during the operation of the wind turbine, thereby effectively preventing the bolt 6 from loosening.

[0026] It includes a plate body 1, a connection component 3, a backing plate 5 and a bolt 6. The plate body 1 includes a square plate 101. Threaded holes 103 are provided at the four corners of the square plate 101. A hexagonal through groove is provided on the plate body 1, and two through holes 102 are provided on the plate body 1. Anti-slip sleeves 303 are arranged in the through holes 102.

[0027] Spring plates 2 are fixedly connected to the six side walls of the hexagonal through groove of the plate body 1. Tooth grooves are provided on the spring plates 2. The six spring plates 2 enclose an annular ring, and the bolt 6 is fitted in the annular ring.

[0028] A backing plate 5 is sleeved on the screw rod of the bolt 6. By inserting the bolt 6 into the annular ring formed by the six spring plates 2, then fixing the bolt 6 at a designated position of the wind turbine with a tool, and then pushing the corresponding plate body 1 closer to the bolt 6 to squeeze the spring plate 2, so that the surface of the spring plate 2 is in close contact, generating a reaction force to clamp the bolt 6. The rotation of the bolt 6 is effectively restricted through the tooth grooves on the spring plate 2. Through the cooperation of the spring plate 2 and the backing plate 5, through the elastic deformation of the spring plate 2 and the energy absorption of the damping plate 501, mechanical vibration can be effectively reduced, thereby preventing the bolt 6 from loosening.

[0029] The connection component 3 includes a disc 301. A connecting rod 302 is fixedly connected to the top end surface of the disc 301. An anti-slip sleeve 303 is fitted on the connecting rod 302. A round rod 304 is fixedly connected to the top end of the connecting rod 302. A tie strap 4 is fixedly connected to the top end of the round rod 304. The round rod 304 and the connecting rod 302 are both fitted in the through hole 102, and the top end surface of the disc 301 abuts against the bottom end surface of the square plate 101.

[0030] By passing the tie strap 4 through the through hole 102, the disc 301 is stuck on the square plate 101, the anti-slip sleeve 303 is tightly inserted into the through hole 102, and then the tie strap 4 is wound around corresponding parts of the wind turbine, such as some connecting rods, screw rods, etc., and the tie strap is tightened, thereby fixing the plate body 1 well. It can also be directly fixed on the wind turbine through the cooperation of the threaded hole 103 and the corresponding screw, which enables double protection to prevent the plate body 1 from slipping off.

[0031] The backing plate 5 includes a damping plate 501. A convex block 502 is provided on the end face of the damping plate 501. A groove 504 is formed in the convex block 502. A through opening 503 is formed in the damping plate 501. The screw rod of the bolt 6 is fitted in the through opening 503. The top end face of the damping plate 501 abuts against the bottom end face of the square plate 101.

[0032] By means of the damping plate 501, the influence of the vibration during the operation of the wind turbine on the bolt 6 is effectively reduced. And due to the convex block 502, a depression is formed between the bolt 6 and the mounting surface when the bolt 6 rotates, which can generate an additional moment to resist loosening.

[0033] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A bolt loosening prevention auxiliary device for a wind turbine, comprising a plate body (1) and a bolt (6), wherein the plate body (1) comprises a square plate (101), threaded holes (103) are provided at four corners of the square plate (101), a hexagonal through groove is provided on the plate body (1), two through holes (102) are provided on the plate body (1), and anti-slip sleeves (303) are provided in the through holes (102); Features: The six side walls of the hexagonal through slot of the plate body (1) are all fixedly connected with spring plates (2), the six spring plates (2) form an annular ring, and the bolts (6) are matched with the annular ring; It also comprises a connection assembly (3), the connection assembly (3) comprising a disc (301), the top end surface of the disc (301) being fixedly connected to a connection rod (302), the connection rod (302) being provided with an anti-slip sleeve (303), the top end of the connection rod (302) being fixedly connected to a round rod (304), the top end of the round rod (304) being fixedly connected to a cable tie (4).

2. The bolt loosening prevention auxiliary device for a wind turbine according to claim 1, characterized in that: It also comprises a pad (5), the pad (5) comprising a damping plate (501), the end surface of the damping plate (501) being provided with a convex block (502), and the convex block (502) being provided with a groove (504).

3. The bolt loosening prevention auxiliary device for a wind turbine according to claim 2, characterized in that: The damping plate (501) is provided with a through opening (503), the screw rod of the bolt (6) is fitted into the through opening (503), and the top end surface of the damping plate (501) is overlapped on the bottom end surface of the square plate (101).

4. The bolt loosening prevention auxiliary device for a wind turbine according to claim 1, characterized in that: The top end surface of the circular disk (301) overlaps the bottom end surface of the square plate (101).

5. The bolt loosening prevention auxiliary device for a wind turbine according to claim 1, characterized in that: The round rod (304) and the connecting rod (302) are both matched with the through hole (102).

6. The bolt loosening prevention auxiliary device for a wind turbine according to claim 1, characterized in that: The spring plate (2) is provided with tooth grooves.

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