CN110725852A

CN110725852A - Transformer locknut assembly

Info

Publication number: CN110725852A
Application number: CN201911098198.0A
Authority: CN
Inventors: 叶仁富; 占倩倩; 应晓云; 姜方军
Original assignee: Zhejiang Proview Electric Applicance Co Ltd
Current assignee: Zhejiang Proview Electric Applicance Co Ltd; Zhejiang BothWell Electric Co Ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-01-24

Abstract

The invention relates to the technical field of transformer anti-loosening, and discloses a transformer anti-loosening nut assembly which comprises a nut, an anti-backing self-locking elastic locking ring and a loosening-preventing washer, wherein the anti-backing self-locking elastic locking ring is arranged between the nut and the loosening-preventing washer; the lower end of the nut is provided with a first sequential tooth; the anti-retreat self-locking elastic lock ring is provided with turning pieces, and the turning pieces comprise upward turning pieces and downward turning pieces; the upper end of the anti-loosening gasket is provided with a second clockwise tooth, and the lower end of the anti-loosening gasket is provided with a reverse tooth. The nut component can be fastened clockwise and screwed, and can be automatically locked when being reversely rotated, and has the advantages of only tightness and no looseness; the connecting device is suitable for various connections and fastening of the transformer, and looseness is prevented; be applied to the transformer valve, strengthen sealed fastening effect, prevent to reveal fluid.

Description

Transformer locknut assembly

Technical Field

The invention relates to the technical field of looseness prevention of transformers, in particular to a looseness-prevention nut assembly of a transformer.

Background

The transformer is a common device in production operation, and is a device for changing alternating voltage by using the principle of electromagnetic induction. The oil-immersed transformer is commonly used in power supply and distribution systems of industrial and mining enterprises and civil buildings, and the transformer is frequently loosened in the working process and becomes a problem of the industry, mainly because the sealing and fastening effect of the transformer is poor, the machining of bolts and nuts leaving a factory is rough, and the sealing and fastening are poor; the transformer valve often becomes loose, resulting in oil leakage.

Disclosure of Invention

The invention aims to solve the technical problems, and adopts the technical scheme that:

a locknut assembly of a transformer comprises a nut, a withdrawal-proof self-locking elastic locking ring and a lockwasher, wherein the withdrawal-proof self-locking elastic locking ring is arranged between the nut and the lockwasher; the lower end of the nut is provided with a first sequential tooth; the anti-retreat self-locking elastic lock ring is provided with turning pieces, and the turning pieces comprise upward turning pieces and downward turning pieces; the upper end of the anti-loosening gasket is provided with a second clockwise tooth, and the lower end of the anti-loosening gasket is provided with a reverse tooth.

The piece turns over is the foil that has certain ductility and hardness, for rectangular form, the long limit of one end with prevent moving back auto-lock elastic lock circle fixed connection, other trilateral not connect for turn over the piece and can overturn from top to bottom, but exert oneself too violently can lead to turning over the piece fracture.

The first sequential tooth of the nut is contacted with the upturning piece, the nut can rotate by clockwise rotation, but when the nut rotates anticlockwise, the upturning piece can be upturned to abut against the first sequential tooth, and then the nut is automatically locked. The second of lock washer is in the same direction as tooth and turn over the piece contact down, and lock washer anticlockwise rotation can rotate, but when clockwise turning, turns over the piece down and can perk down, thereby supports the second in the same direction as tooth automatic locking.

The locking nut component of the transformer can be fastened clockwise and screwed, and can be locked automatically and only tightly but not loosely when rotating anticlockwise.

Further, the first smooth teeth are first protruding strips distributed on the lower surface of the nut.

Further, the length of the first protruding strip is half of the circumference of the radius of the nut where the first protruding strip is located.

Further, the cross section of each first protruding strip is triangular, and the number of the first protruding strips is 5.

The length of the 5 first convex strips is half of the circumference, and the half of the lower surface of the nut is free of the convex strips, so that a movable fastening space is provided, and the nut cannot be further fastened in a loose and not-locked state.

Furthermore, the anti-retreat self-locking elastic locking ring is uniformly provided with turnover pieces, the upper turnover pieces and the lower turnover pieces are alternately arranged, and the upper turnover pieces and the lower turnover pieces are rectangular.

Further, the second smooth teeth are second convex strips distributed on the upper surface of the anti-loosening gasket.

Further, the length of the second raised strips is half of the circumference of the radius of the anti-loose washer where the second raised strips are located.

Further, the cross section of each second protruding strip is triangular, and the number of the second protruding strips is 5.

Further, the counter teeth are third protruding strips arranged on the lower surface of the anti-loose washer. Increasing friction force, fastening connection and preventing looseness.

Compared with the prior art, the invention has the following beneficial effects: the locknut component of the transformer can be fastened clockwise and screwed, and can be automatically locked when being reversed, and the locknut component has the advantages of only tightness and no looseness; the connecting device is suitable for various connections and fastening of the transformer, and looseness is prevented; be applied to the transformer valve, strengthen sealed fastening effect, prevent to reveal fluid.

Drawings

FIG. 1 is a top view of the combination of the present invention.

Fig. 2 is a schematic view of the nut assembly of the present invention.

Fig. 3 is a top view of the anti-back self-locking elastic locking ring of the present invention.

Fig. 4 is a schematic structural view of the flap of the present invention.

Fig. 5 is a schematic structural view of the anti-retreat self-locking elastic lock ring part upturning and downturning piece in embodiment 2.

In the figure: the anti-loosening self-locking nut comprises a nut 1, an anti-loosening self-locking elastic locking ring 2, a locking washer 3, a first clockwise tooth 4, a first convex strip 41, a turnover piece 5, an upward turnover piece 51, a downward turnover piece 52, a second clockwise tooth 6, a second convex strip 61, a reverse tooth 7, a third convex strip 71, an upward turnover piece 510 in embodiment 2 and a downward turnover piece 520 in embodiment 2.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments, wherein the positional relationship described herein is the same as that of the drawings, and is for convenience of description only and does not limit the structure of the present invention.

Example 1

The invention relates to a locknut component of a transformer, which comprises a nut 1, an anti-backing self-locking elastic locking ring 2 and a lockwasher 3, wherein the anti-backing self-locking elastic locking ring 2 is arranged between the nut 1 and the lockwasher 2; the nut lower surface is provided with a first protrusion strip 4, the first protrusion strip is 5 first protrusion strips 41 distributed on the lower surface of the nut, the length of each first protrusion strip is half of the circumference of the radius of the nut where the first protrusion strip is located, the first boss protrusion strip is not arranged on the upper half of the circumference surface of the lower surface of the nut, a movable fastening space is provided, and further fastening cannot be achieved under the condition that the nut is loosened and not locked. The cross section of the first protruding strip is triangular, as shown in fig. 2, the cross section of the first protruding strip is further a right-angled triangle, one right-angled edge of the first protruding strip is fixedly connected with the lower surface of the nut, and the sharp-angled tip of the first protruding strip is in contact with the upturned sheet of the anti-withdrawal self-locking elastic locking ring. Similarly, the sharp point of the second convex strip is contacted with the downward turning piece of the anti-retreat self-locking elastic locking ring. The clockwise fastening can be screwed, and the lock is automatically locked when the lock is reversely rotated, and the lock can be only fastened but not loosened.

The anti-retreat self-locking elastic lock ring is provided with 12 turning pieces 5, the turning pieces comprise 6 upward turning pieces 51 turning upwards and 6 downward turning pieces 52 turning downwards, the turning pieces are uniformly distributed on the anti-retreat self-locking elastic lock ring, the upward turning pieces and the downward turning pieces are alternately arranged, if one turning piece is an upward turning piece, the turning pieces on both sides are downward turning pieces, and the shape of the turning piece at the position is rectangular; prevent moving back auto-lock elastic lock circle and be equipped with 12 rectangle through grooves earlier, turn over the long limit of piece and the long limit fixed connection in rectangle through groove, other trilateral not connected for turn over the piece and can overturn from top to bottom. The upper end of the anti-loosening gasket is provided with a second clockwise tooth 6, and the lower end of the anti-loosening gasket is provided with a reverse tooth 7. The reverse teeth are third protruding strips arranged on the lower surface of the anti-loose washer. Increase friction and prevent loosening.

For example, the first sequential tooth of the nut is contacted with the upturned piece, the nut can rotate by clockwise rotation, but when the nut rotates anticlockwise, the upturned piece can be upwarped to abut against the first sequential tooth, and then the nut is automatically locked. The up-down turning piece has an automatic locking function, so that the connection is firmer, and the anti-loosening effect is obvious.

Example 2

The difference from the embodiment 1 lies in the anti-backing self-locking elastic locking ring, as shown in fig. 5, a rectangular upturning piece 510 which is upturned is arranged at the circumferential edge of the anti-backing self-locking elastic locking ring, rectangular down-turned pieces 520 are arranged at two sides of the upturning piece 510, and are alternately arranged in sequence to surround the whole circumferential edge; the turnover is provided with a certain set angle, which is 45 degrees, and all the turnover pieces form an inclined plane. When the locking is reversed, the first sequential tooth is pressed against the back surface of the inclined plane, so that the locking cannot be loosened.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a transformer locknut subassembly which characterized in that: the anti-backing self-locking elastic lock ring is arranged between the nut and the anti-loose washer;

the lower end of the nut is provided with a first sequential tooth;

the anti-retreat self-locking elastic lock ring is provided with turning pieces, and the turning pieces comprise upward turning pieces and downward turning pieces;

the upper end of the anti-loosening gasket is provided with a second clockwise tooth, and the lower end of the anti-loosening gasket is provided with a reverse tooth.

2. The transformer locknut assembly of claim 1, wherein: the first smooth teeth are first protruding strips distributed on the lower surface of the nut.

3. The transformer locknut assembly of claim 2, wherein: the length of the first protruding strip is half of the circumference of the radius of the nut where the first protruding strip is located.

4. The transformer locknut assembly of claim 2, wherein: the cross section of each first protruding strip is triangular, and the number of the first protruding strips is 5.

5. The transformer locknut assembly of claim 1, wherein: the anti-retreat self-locking elastic lock ring is uniformly provided with turnover pieces, the upper turnover pieces and the lower turnover pieces are alternately arranged, and the upper turnover pieces and the lower turnover pieces are rectangular.

6. The transformer locknut assembly of claim 1, wherein: the second is along the tooth for distributing the second protruding strip on locking washer upper surface.

7. The transformer locknut assembly of claim 6, wherein: the length of the second raised strips is half of the circumference of the radius of the anti-loose washer where the second raised strips are located.

8. The transformer locknut assembly of claim 6, wherein: the cross section of each second convex strip is triangular, and the number of the second convex strips is 5.

9. The transformer locknut assembly of claim 1, wherein: the reverse teeth are third protruding strips arranged on the lower surface of the anti-loose washer.