Bolt applied to wind power cabin

Abstract

The bolt comprises a stud, a reserved part is arranged on the upper portion of the stud, a connecting column is installed on the reserved part, the reserved part is connected with a nut through the connecting column, an inserting groove is formed in the side face of the upper portion of the reserved part, and the upper portion of the inserting groove is connected with the nut through the connecting column. An inner ring is movably installed on the reserved part, and an inserting rod is installed on the lower portion of the inner ring. According to the application, the inner ring and the outer ring are pushed to move on the connecting column, so that an inserting rod at the lower part of the inner ring corresponds to an inserting groove in the reserved part in position, then the inner ring is pushed, so that the inserting rod enters the inserting groove, and then the outer ring is fixed through a fastening screw, so that the outer ring is prevented from rotating when the wind power cabin vibrates; and meanwhile, the outer ring can limit the reserved part through the inner ring and the inserting rod, and at the moment, the reserved part and the stud cannot rotate, so that the overall stability is improved, and the stud can be prevented from falling off.

Description

TECHNICAL FIELD

[0001] The application relates to the field of wind turbine nacelle installation, in particular to a bolt applied to a wind turbine nacelle. BACKGROUND

[0002] The wind turbine nacelle is used for accommodating and protecting the main shaft, gear box, generator and other transmission systems and electrical equipment of a wind turbine, is usually made of glass fiber reinforced plastic with light self-weight, high strength and corrosion resistance, has a large product volume, needs more accessories, and needs to ensure the stability of the nacelle during installation, and therefore the structure of the bolt is particularly important.

[0003] At present, the bolts used on the wind turbine nacelle mostly do not have an anti-loosening structure, and slight vibration is caused during internal mechanical operation, so that the bolts may be loosened after long-time use, the fixing effect is reduced, abnormal sound is caused or the service life of the internal mechanical is reduced, and the overall use effect is not improved. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem that slight vibration is caused during internal mechanical operation, so that the bolts may be loosened after long-time use, the application provides a bolt applied to a wind turbine nacelle.

[0005] The application provides a bolt applied to a wind turbine nacelle, which adopts the following technical scheme:

[0006] The bolt comprises a stud, a reserved part is arranged at the upper portion of the stud, a connecting column is arranged on the reserved part, a nut is connected to the connecting column through the reserved part, an insertion slot is arranged on the upper side surface of the reserved part, an inner ring is movably arranged on the reserved part, and an insertion rod is arranged on the lower portion of the inner ring.

[0007] Through the above technical scheme, the insertion rod enters the inside of the insertion slot, then the outer ring is fixed through the fastening screw, the outer ring cannot rotate when the wind turbine nacelle vibrates, and the outer ring can limit the reserved part through the inner ring and the insertion rod.

[0008] Preferably, the size of the insertion rod is matched with the size of the insertion slot, the number of the insertion rods is matched with the number of the insertion slots, the insertion rods and the insertion slots are evenly distributed in a circle, and the insertion rods are located in the inside of the insertion slots.

[0009] Through the above technical scheme, the insertion rod enters the inside of the insertion slot, so that the inner ring and the reserved part are connected and integrated, and the inner ring and the reserved part are fixed.

[0010] Preferably, an outer ring is arranged on the outer side of the inner ring, an installation hole is arranged on the outer ring, and a fastening screw is arranged in the inside of the installation hole.

[0011] By adopting the technical scheme, the fastening screw can fix the outer ring, so as to fix the inner ring.

[0012] Preferably, the number of the mounting holes and the fastening screws is multiple, and the mounting holes and the fastening screws are uniformly arranged in a circle.

[0013] By adopting the technical scheme, the outer ring can be fixed by the multiple uniformly distributed fastening screws, so as to improve the stability of the fixing of the outer ring.

[0014] Preferably, the size of the outer ring is greater than that of the nut, and the fastening screw is located outside the vertical lower part of the nut.

[0015] By adopting the technical scheme, the fastening screw can be fixed outside the nut.

[0016] Preferably, a sealing sleeve is arranged between the inner ring and the connecting column, and the sealing sleeve is fixed to the inner side of the inner ring.

[0017] By adopting the technical scheme, the sealing sleeve can effectively prevent rusting at the connecting position of the stud and the nut.

[0018] Preferably, the inner diameter of the sealing sleeve is matched with the diameter of the connecting column, and the inner wall of the sealing sleeve is matched with the side surface of the connecting column.

[0019] By adopting the technical scheme, the sealing sleeve can prevent moisture from entering the connecting position of the stud and the nut.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. The present application moves the inner ring and the outer ring on the connecting column, so that the position of the insertion rod at the lower part of the inner ring is matched with the position of the insertion slot on the reserved part, and then the inner ring is pushed to make the insertion rod enter the inside of the insertion slot, and then the outer ring is fixed by the fastening screw, so that the outer ring does not rotate when the wind turbine cabin vibrates, and the outer ring can limit the reserved part through the inner ring and the insertion rod, so that the reserved part and the stud do not rotate, thereby improving the stability of the whole and preventing the stud from falling off.

[0022] 2. The present application can prevent moisture from entering the connecting position of the stud and the nut through the sealing sleeve, so as to effectively prevent rusting at the connecting position of the stud and the nut, and improve the service life of the whole. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The present application is an overall structure diagram of a bolt applied to a wind turbine cabin;

[0024] Figure 2 This is a schematic diagram mainly showing the structure of the stud and the reserved portion in an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the split structure of the inner ring and the reserved portion, which mainly reflects the embodiment of the present application;

[0026] Figure 4 This is a schematic diagram mainly showing the structure of the outer ring and inner ring parts in an embodiment of the present application;

[0027] Figure 5 This is a schematic diagram mainly showing the lower structure of the outer ring and the inner ring in an embodiment of the present application;

[0028] Figure numerals: 1, stud; 2, reserved part; 3, connecting column; 4, nut; 5, plug-in slot; 6, inner ring; 7, outer ring; 8, plug-in rod; 9, mounting hole; 10, fastening screw; 11, sealing sleeve. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1-5 This application is described in further detail.

[0030] An embodiment of the present application discloses a bolt used in a wind turbine cabin, including a stud 1, a reserved portion 2 is provided on the upper part of the stud 1, a connecting column 3 is installed on the reserved portion 2, the reserved portion 2 is connected to a nut 4 through the connecting column 3, and a plug-in groove 5 is provided on the upper side of the reserved portion 2, so that the plug-in rod 8 enters the interior of the plug-in groove 5, and the outer ring 7 can be fixed by tightening the screw 10.

[0031] Please refer to Figures 1 to 3 The outer ring 7 is larger than the size of the nut 4, and the fastening screw 10 is located on the outer side of the nut 4 at the vertical lower part. The outer ring 7 is fixed with the fastening screw 10 to ensure that the outer ring 7 does not rotate when the wind turbine cabin vibrates. At the same time, the outer ring 7 can limit the reserved part 2 through the inner ring 6 and the plug rod 8. At this time, the reserved part 2 and the stud 1 will not rotate.

[0032] Please refer to Figure 4 and Figure 5The sealing sleeve 11 is fixed to the inner side of the inner ring 6, the inner diameter of the sealing sleeve 11 is matched with the diameter of the connecting column 3, the inner wall of the sealing sleeve 11 is matched with the side surface of the connecting column 3, and after the inner ring 6 and the outer ring 7 are fixed, water can be prevented from entering the connecting position of the screw column 1 and the nut, so that rust of the connecting position of the screw column 1 and the nut can be effectively avoided.

[0033] The implementation principle of the bolt applied to the wind turbine nacelle is as follows: after the screw column 1 and the nut are connected, the inner ring 6 and the outer ring 7 are pushed to move on the connecting column 3, the position of the insertion rod 8 at the lower part of the inner ring 6 is matched with the position of the insertion slot 5 on the reserved part 2, then the inner ring 6 is pushed, the insertion rod 8 is inserted into the inside of the insertion slot 5, then the outer ring 7 is fixed through the fastening screw 10, the outer ring 7 cannot rotate when the wind turbine nacelle vibrates, and meanwhile the outer ring 7 can limit the reserved part 2 through the inner ring 6 and the insertion rod 8, so that the reserved part 2 and the screw column 1 cannot rotate, and the stability of the whole is improved.

[0034] The above are preferred embodiments of the application, and the protection scope of the application is not limited thereto, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A bolt used in a wind turbine nacelle, characterized by: The invention comprises a stud (1), wherein a reserved portion (2) is provided on the upper portion of the stud (1), a connecting column (3) is installed on the reserved portion (2), the reserved portion (2) is connected to a nut (4) via the connecting column (3), a plug-in groove (5) is provided on the upper side surface of the reserved portion (2), an inner ring (6) is movably installed on the reserved portion (2), and a plug-in rod (8) is installed on the lower portion of the inner ring (6).

2. The bolt used in a wind turbine nacelle according to claim 1, characterized in that: The size of the plug rod (8) is adapted to the size of the plug slot (5); the number of the plug rods (8) and the number of the plug slots (5) are multiple and are evenly distributed around the circumference; the plug rod (8) is located inside the plug slot (5).

3. The bolt used in a wind turbine nacelle according to claim 1, characterized in that: An outer ring (7) is installed on the outer side of the inner ring (6), a mounting hole (9) is provided on the outer ring (7), and a fastening screw (10) is installed inside the mounting hole (9).

4. The bolt used in a wind turbine nacelle according to claim 3, characterized in that: There are multiple mounting holes (9) and fastening screws (10), and the multiple mounting holes (9) and fastening screws (10) are evenly arranged around the circumference.

5. The bolt used in a wind turbine nacelle according to claim 4, characterized in that: The size of the outer ring (7) is larger than that of the nut (4), and the fastening screw (10) is located on the outside of the vertical lower part of the nut (4).

6. The bolt used in a wind turbine nacelle according to claim 1, characterized in that: A sealing sleeve (11) is installed between the inner ring (6) and the connecting column (3), and the sealing sleeve (11) is fixed on the inner side of the inner ring (6).

7. The bolt used in a wind turbine nacelle according to claim 6, characterized in that: The inner diameter of the sealing sleeve (11) is matched to the diameter of the connecting column (3), and the inner wall of the sealing sleeve (11) is fitted to the side surface of the connecting column (3).

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