CN111456996A

CN111456996A - Anti-loosening nut with functions of vibrating and tightening

Info

Publication number: CN111456996A
Application number: CN202010413696.6A
Authority: CN
Inventors: 王彦淞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-07-28

Abstract

The invention discloses an anti-loosening nut for realizing the function of tightening the nut over vibration, which comprises a flange nut and a concave nut, wherein the flange nut and the concave nut are superposed and fastened on a bolt and are locked by a fastener; the flange nut main body is a hexagonal head nut, an internal thread tapping alignment mark B is arranged on the side face of the flange nut main body, and a flange structure, an anti-loosening wedge-shaped face B and a fastening in-place cutting angle mark B are arranged on the same end face of the flange nut main body. When the concave nut and flange nut assembly is fastened with a bolt and a fastened piece, the anti-loosening wedge structure, the tenon-and-mortise and ratchet structure matched with the flange and the concave shape, the inner screw thread and the bolt screw thread are asynchronous and the like and act together, the assembly can be more and more tightened (which is called as never loosening) under the conditions of strong or long-term vibration and the like, and the anti-loosening function is reliable and effective under the severe environment.

Description

Anti-loosening nut with functions of vibrating and tightening

Technical Field

The invention relates to the technical field of mechanical fasteners, in particular to an anti-loosening nut capable of achieving the function of tightening the nut with vibration.

Background

Various mechanical parts use a large number of bolt and nut fastening structures.

Ordinary bolt and nut fastening is under the operating mode of long-term vibration or violent vibration, and it is not hard up or even drop to roll back easily, causes product function fault, needs regularly to inspect and maintain and refasten again, consumes a large amount of manpower resources and cost, so, important and long-life mechanical product need adopt the bolt and nut structure of locking taking off. As is known, high-speed rails in China use a large number of nuts which are imported from foreign countries and produced in China and are never loosened, and various engines also use a large number of anti-loosening nuts.

Disadvantages or shortcomings of the prior art:

the main defects of the Swedish NORD-L OCK (Lodika) wedge-shaped washer and the anti-loosening bolt nut thereof in the figure 1 are that 1, the anti-loosening function mainly depends on relative movement of an upper washer and a lower washer along a wedge-shaped inclined plane, the requirements on the process and the manufacturing precision are high, so that the manufacturing cost is high, 2, the potential failure risk exists, under the condition that the profile precision of the wedge-shaped surfaces of the upper washer and the lower washer is not enough or the surfaces of the upper washer and the lower washer are not smooth enough, when the nut is vibrated and retreated, the resistance of the upper washer and the lower washer is increased, so that the relative movement cannot be generated, the anti-loosening function fails, the upper washer and the lower washer are equal to a round washer, the nut can be continuously vibrated until loosening, 3, the reliability and the durability are poor, for example, when the occasion of severe vibration of high-speed rails and outdoor blowing rain is applied, when the wedge-shaped surface of a part falls into dust or is locally rusted, the potential failure mode can occur, so that serious consequences can be generated, 3, because the precision requirement is high, the cost;

the natural HARD-L OCK (Hadelock) never-loose nut in the figure 2 has the characteristics of relatively reliable anti-loosening function, strong applicability to severe environment and the like, is widely applied to high-speed railway lines in China, and has the main defects that 1, although the main principle is based on the tenon-and-mortise structure of ancient buildings in China, the core intellectual property is abroad, 2, the cost is high due to patent protection and the like, 3, the upper nut and the lower nut are matched by eccentric circles, the fastening torque is large, the fastening is relatively labor-consuming, 4, experiments show that when the nut is severely vibrated, the fastening torque is slightly attenuated and then kept stable, namely, parts are not fallen but slightly loosened, and the structure and the function of compensating and eliminating vibration gaps are mainly not optimized.

The main disadvantages of the never-loose nuts (bolts) of fig. 3, 4, 5 and the like are: 1. the proposal has no related structure for compensating and eliminating the violent vibration clearance, namely, the proposal only has the function of preventing falling and has no function of preventing loosening; 2. during practical application, fastening nut can loose, but does not drop, and its not hard up clearance is bigger and bigger more and more, under the violent vibration operating mode, can arouse great vibration noise and abnormal sound.

Disclosure of Invention

To overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide an anti-loosening nut that achieves a function of tightening with increasing vibration.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a realize shaking more tight function's locking nut that takes off more, includes flange nut and concave nut, end face contact locking each other, flange nut and concave nut screw thread and fastening bolt's screw-thread fastening, the concave nut main part is flanged hexagon nut A, is provided with internal thread processing internal thread tapping alignment sign A on its side, is provided with concave structure, locking wedge A on its same terminal surface and fastens corner cut sign A that targets in place, concave structure, locking wedge A and fastening corner cut sign A three that targets in place form a week, concave structure function is the mortise structure of mortise and tenon structure, is provided with ratchet structure A on its inner wall, fastening corner cut sign A that targets in place is for setting up the trilateral corner cut on concave nut terminal surface hexagon angle, locking wedge A sets up threely and about concave nut terminal surface center evenly distributed with fastening corner cut sign A that targets in place, the flange nut main part is hexagon head nut B, is provided with internal thread processing internal thread tapping alignment sign B on its side, is provided with flange structure, locking wedge face B and fastening corner cut sign B that targets in place on its terminal surface, the flange structure is the round platform form, and the function is the tenon structure of tenon fourth of the twelve earthly branches structure, the central part of flange structure communicates with each other and is provided with the internal thread with the spill nut, the outer fringe part of flange structure is provided with ratchet structure B, the fastening corner cut sign B that targets in place is for setting up the trilateral corner cut on hexagon angle of hexagon head nut B terminal surface, locking wedge face B targets in place with the fastening corner cut sign B and sets up threely and about hexagon head nut B terminal surface center evenly distributed.

In a preferred embodiment, the anti-loosening wedge surface a and the anti-loosening wedge surface B are fan-shaped wedges, that is, a fan shape in the horizontal direction and a wedge-shaped height difference in the vertical direction exist, and are respectively arranged on the top abutting surfaces of the concave nut and the flange nut, and the lead angle of the wedge-shaped inclined surface of the anti-loosening wedge surface a is larger than the lead angle of the thread.

In a preferred embodiment, the ratchet structures a and B include tooth tops and tooth backs, the tooth tops are tangential to the circumferential directions of the ratchet structures a and B, the tooth backs are perpendicular to the circumferential directions of the ratchet structures a and B, the tooth backs on the ratchet structures a are aligned with the starting points of the anti-loosening wedge surfaces a, and the tooth backs on the ratchet structures B are aligned with the starting points of the anti-loosening wedge surfaces B.

In a preferred embodiment, the internal thread processing internal thread tapping alignment mark a and the internal thread processing internal thread tapping alignment mark B are marks with sharp corners, the internal thread processing internal thread tapping alignment mark a is disposed on a side surface of the female nut, the internal thread processing internal thread tapping alignment mark B is disposed on a side surface of the flange nut, a triangular vertex of the internal thread processing internal thread tapping alignment mark a of the female nut and a triangular vertex of the internal thread processing internal thread tapping alignment mark B of the flange nut are aligned and locked to be paired to process an internal thread, a must-apply (Spiralock) wedge tap is recommended to achieve a better anti-loosening effect, and a common tap can also achieve the requirement of preventing co-rotation.

In a preferred embodiment, the concave structure and the flange structure are both provided with a taper angle, the taper angle ranges from 10 degrees to 20 degrees, a gap between the end face of the concave structure and the inner end face of the flange structure ranges from 0.5mm to 1mm, and a guide chamfer angle is arranged at the junction of the outer end face of the concave structure and the inner wall.

In a preferred embodiment, the female nut and the flange nut are processed and used in a matched mode, when internal threads are processed, the internal thread tapping alignment mark A of the female nut and the internal thread tapping alignment mark B of the flange nut are aligned and then clamped, the internal threads of the female nut and the internal threads of the flange nut are processed synchronously from the direction of the female nut by using a screw tap, so that the threads of the internal threads of the female nut and the internal threads of the flange nut are synchronous when the internal thread tapping alignment mark A and the internal thread tapping alignment mark B are aligned, and when the female nut and the flange nut are fastened and locked, the threads of the flange nut and the threads of the female nut are asynchronous with the threads of the fastening bolt.

The invention has the technical effects and advantages that:

1. the invention provides an anti-loosening nut for realizing the function of tightening the nut with the increase of vibration, which is characterized in that an anti-loosening wedge-shaped bulge is arranged on a flange nut and a concave nut, the lift angle α of a wedge-shaped inclined plane of the anti-loosening wedge-shaped bulge is larger than the thread lift angle phi, when the concave nut (2) tends to loosen and rotate due to violent vibration, a backspace generated by the potential loosening can cause the wedge lift angle of the concave nut (2) to generate larger compression axial displacement, so that after the anti-loosening nut is fastened, the clearance generated by the vibration can be automatically compensated under the working condition of violent vibration, the locking force is not attenuated, and the nut with the increase of vibration is tightened, thereby realizing the anti-.

2. According to the invention, the flange nut and the concave nut are provided with the anti-loosening wedge-shaped bulges, the height H of the anti-loosening wedge-shaped bulges is matched with the lead angle of the screw thread, the fastening in-place chamfer mark is arranged at 3 angular positions of the nut, the alignment of the mark angles is visually observed, the flange nut and the concave nut are ensured to be accurately attached in a fastening state, the axial clearance is eliminated, the fastening and dismounting torque is relatively small on the premise of ensuring the anti-loosening effect, and the working strength of operators is reduced.

3. According to the invention, the anti-loosening ratchet wheel matched with the flange nut and the concave nut is matched with the anti-loosening wedge-shaped bulge, so that the backspacing resistance after locking is large, and the anti-loosening performance is enhanced.

4. According to the invention, the flanges of the flange nuts are matched with the grooves of the concave nuts in a mortise-tenon manner, so that the radial fit looseness can be effectively eliminated in a matched manner, and the radial looseness can be prevented.

5. According to the invention, the female nut and the flange nut are provided with the internal thread processing alignment marks on the hexagonal surfaces, and the female nut and the flange nut are aligned in processing, so that the female nut internal thread and the bolt (and the flange nut) thread are asynchronous in the final fastening state, a downward locking forced deformation stress is generated, and the flange nut and the female nut are prevented from simultaneously following to influence the fastening effect.

6. The anti-loosening nut set is good in functional reliability, and the anti-loosening structures simultaneously act after being fastened and supplement each other to ensure the reliability of the anti-loosening function together.

7. The anti-loosening nut set is good in environmental reliability and durability, the anti-loosening function of the anti-loosening nut set can be reliable and effective in severe environments, for example, in the field environment of sun, rain and acid rain corrosion, when the nut locking mechanism is corroded, the locking function can be strengthened rather than attenuated, only the disassembly torque can be increased, and the risk of functional failure is avoided.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of a prior art NORD-L OCK wedge washer and its anti-loosening bolt and nut.

FIG. 2 shows a prior art HARD-L OCK (Hadelock) nut which is never loosened.

Figure 3 shows a permanent locking nut of the prior art according to pending patent CN 201910078239.3.

FIG. 4 is a prior art 'Never loose interlocking check nut' of pending patent CN 201910850502.6.

FIG. 5 shows a non-loose bolt of patent CN201721700071.8 in the prior art.

Fig. 6 is a three-dimensional schematic diagram of the overall structure of the present invention.

Fig. 7 is a schematic cross-sectional view of the overall structure of the present invention.

Fig. 8 is a schematic structural view of the female nut of the present invention.

Fig. 9 is a schematic view of the flange nut of the present invention.

FIG. 10 is a schematic view of the ratchet structure of the present invention.

FIG. 11 is a schematic view of the taper angle and guide chamfer structure of the present invention.

FIG. 12 is a schematic of the process of the present invention.

FIG. 13 is a flow chart illustrating a method of using the present invention.

Fig. 14 is a schematic diagram of key parameters of the female nut and the flange nut of the present invention.

FIG. 15 is a schematic sectional view showing the asynchronous structure of the screw threads at the time of fastening according to the present invention.

The reference signs are: 1. a flange nut; 2. a female nut; 3. a fastened piece A; 4. a fastened piece B; 5. a flat gasket; 6. fastening a bolt; 7. a hexagonal head nut A; 8. an internal thread tapping alignment mark A; 9. a concave structure; 10. a locking wedge surface A; 11. fastening the corner cutting mark A in place; 12. a ratchet structure A; 13. a hexagonal head nut B; 14. an internal thread tapping alignment mark B; 15. a flange structure; 16. a locking wedge surface B; 17. fastening the corner cutting mark B in place; 18. a ratchet structure B; 19. tooth top; 20. a tooth back; 21. guiding and chamfering; 22. the angle of taper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The specific embodiment of the invention provides an anti-loosening nut to realize the function of tightening the nut with vibration. When the concave nut and the flange nut assembly are fastened with a bolt and a fastened piece, a plurality of anti-loosening structures (a wedge-shaped structure, a tenon-and-mortise structure with a flange matched with a concave shape, a ratchet structure and an inner screw thread and bolt screw thread asynchronous structure) supplement each other to play a role together, so that the risk of potential failure is reduced to the maximum extent, the conditions of strong vibration or long-term vibration and the like are guaranteed to be more and more tight (commonly called as never loosening), the anti-loosening function is still reliable and effective under severe environment, and the reliability and the durability are improved.

The anti-loosening nut for achieving the tightening function as shown in the figures 6-9 comprises a flange nut (1) and a concave nut (2), when the anti-loosening nut is locked in end face contact with each other, threads of the flange nut (1) and the concave nut (2) are fastened with a fastening bolt (6) through a wedge clearance (H) and a wedge clearance (H), when the anti-loosening nut is fastened in place, the wedge clearance (H) and the wedge clearance (H) are calculated as a wedge clearance (H), the wedge clearance (H) and a wedge clearance (H) are calculated as a clearance (H), the wedge clearance (H) and a wedge clearance (H2), the wedge clearance (H) and a wedge clearance (H) are calculated as a clearance (H) and a clearance (H) are calculated as a clearance (19), the index (H) and a index (H) is calculated as a index (19), the index (H) is calculated as a index (19), the index (H) is calculated as a index (H), the index (H) is calculated as a index H, the index H) is calculated as a index H, the index H and a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is calculated as a index H, the index H is the index H, the index H is the index H, the index H is calculated as a index H, the index H is calculated as the index H, the index H is the index H.

According to the anti-loosening nut for realizing the function of overtightening by vibration, as shown in fig. 8-9, the internal thread tapping alignment mark a (8) and the internal thread tapping alignment mark B (14) are marks with sharp corners, the internal thread tapping alignment mark a (8) is arranged on the side surface of the hexagonal head nut a (7), the internal thread tapping alignment mark B (14) is arranged on the side surface of the hexagonal head nut B (13), the mark sharp corners of the internal thread tapping alignment mark a (8) are aligned, and when the flange nut (1) and the female nut (2) are matched to process internal threads, the mark sharp corners of the internal thread tapping alignment mark a (8) and the mark sharp corners of the internal thread tapping alignment mark B (14) are aligned; when flange nut (1) and spill nut (2) fastening locking, the sign closed angle of internal thread tapping alignment sign A (8) lags behind and 2 hexagonal face angles of sign closed angle of internal thread tapping alignment sign B (14) for final fastening state internal thread is asynchronous, and produces forced deformation atress locking flange nut (1) and spill nut (2) of a locking downwards, and the syntropy when avoiding fastening promotes the practicality of this device.

According to the anti-loosening nut for realizing the function of overtopping and overtopping, which is shown in fig. 10, the ratchet structure A (12) and the ratchet structure B (18) comprise tooth tops (19) and tooth backs (20), the tooth tops (19) are tangent to the circumferential directions of the ratchet structure A (12) and the ratchet structure B (18), the tooth backs (20) are vertical to the circumferential directions of the ratchet structure A (12) and the ratchet structure B (18), the tooth backs (20) on the ratchet structure A (12) are aligned with the starting points of the anti-loosening wedge-shaped surface A (10), and the tooth backs (20) on the ratchet structure B (18) are aligned with the starting points of the anti-loosening wedge-shaped surface B (16); when n is 2, the angle a of each tooth of the ratchet structure A (12) and the ratchet structure B (18) is 15 degrees, the resistance in fastening can be reduced by arranging the tooth top (19) to be tangent to the circumferential direction of the ratchet structure A (12) and the ratchet structure B (18), the resistance in locking can be increased by arranging the tooth back (20) to be vertical to the circumferential direction of the ratchet structure A (12) and the ratchet structure B (18), and the locking synchronization of the anti-loosening nut in fastening can be realized by arranging the tooth back (20) on the ratchet structure A (12) to be aligned with the starting point of the anti-loosening wedge surface A (10) and the tooth back (20) on the ratchet structure B (18) to be aligned with the starting point of the anti-loosening wedge surface B (16).

According to the anti-loosening nut for realizing the function of tightening the nut with the increased vibration shown in fig. 11, both the outer wall of the concave structure (9) and the inner wall of the flange structure (15) are provided with taper angles (22), the angle range of the taper angles (22) is 10 degrees to 20 degrees, the gap between the end face of the concave structure (9) and the inner end face of the flange structure (15) is 0.5mm to 1mm, and a guide chamfer angle (21) is arranged at the junction of the outer end face of the concave structure (9) and the inner wall; through setting up taper angle (22) angle range 10 to 20, can effectively match and eliminate radial complex loose momentum, through setting up direction corner cut (21), convenience when can improving between spill nut (2) and flange nut (1) the equipment.

According to the anti-loosening nut for realizing the function of tightening the nut with increasing vibration shown in fig. 12, the female nut (2) and the flange nut (1) are processed and used in a matched mode, when an internal thread is processed, the internal thread tapping alignment mark a (8) of the female nut (2) and the internal thread tapping alignment mark B (14) of the flange nut (1) are aligned and then clamped, internal threads of the female nut (2) and the flange nut (1) are simultaneously processed by a screw tap, and the internal threads of the female nut (2) and the flange nut (1) are synchronously tapped when the internal thread tapping alignment mark a (8) and the internal thread alignment mark B (14) are aligned; when the internal threads are machined, the internal threads are aligned, so that the internal threads are not synchronous in the final fastening state, a forced deformation stressed locking flange nut (1) and a concave nut (2) which are locked downwards are generated, the simultaneous rotation during fastening is avoided, the forced locking interference quantity t is 0.216mm through actual data measurement, the tolerance of thread manufacturing can be contained, and locking is ensured; during machining, the Shibija wedge-shaped screw tap is recommended to be used for tapping, machining quality can be improved, and common screw threads can meet the requirement of locking and preventing co-rotation.

The specific working principle of the invention is as follows:

firstly, key parameters of a locking wedge-shaped bulge of a flange nut (1) and a concave nut (2) in pairing are as follows:

1. lead angle Φ of thread: taking the national standard M10 metric rough thread as an example, the nominal diameter D of the thread is 10mm, the thread pitch P is 1.5mm, and the calculation formula is as follows: the lead angle phi is Arctan (P/(pi) D), and the calculated lead angle phi is 2.73 degrees;

2. the lead angle α of the wedge-shaped inclined plane is calculated according to the formula that the lead angle α of the wedge-shaped inclined plane is Arctan (2 × H/(A × D)), and the calculation result is α to 8.15 degrees;

3. the calculated result α is more than phi, when the flange nut is loosened and rotated due to violent vibration, a backspace gap generated by potential loosening causes a wedge-shaped lead angle to generate larger compression axial displacement, so that the effect of being tighter and tighter by more vibration (commonly called as never loosening) is generated;

4. the height H of the projection: the thread rotation lift distance H corresponding to the anti-loosening wedge-shaped bulge fan-shaped angle A is P/(360 DEG/A) is 0.125mm, in order to ensure that the flange nut (1) and the concave nut (2) are accurately attached in a fastening state, H is n H, n is an odd number greater than 1, the larger n is, the better the anti-loosening effect is, but the larger overload moment is in fastening and dismounting, the harder the fastening and dismounting is, and n is recommended to be 3;

secondly, key parameters of the anti-loose ratchet wheel matched with the flange nut (1) and the concave nut (2) are as follows:

1. angle per tooth a of ratchet: a is A/n, n is an integer larger than 1, when n is 2, the calculation result shows that the angle a of each tooth of the ratchet wheel is 15 degrees;

2. the tooth top (19) of the ratchet wheel is tangent to the circumference, so that the resistance in fastening can be reduced;

3. the tooth back (20) of the ratchet wheel is vertical to the circumference, so that the resistance in locking can be increased;

4. the ratchet wheel is aligned with the starting point of the wedge-shaped protrusion, and locking is synchronous.

Thirdly, key parameters of the tenon-and-mortise matched structure of the flange structure (15) and the concave structure (9) are as follows:

1. the taper angle β: β of the flange structure (15) and the concave structure (9) matched with the tenon-and-mortise structure is 10-20 degrees, so that the radial matching looseness can be effectively eliminated in a matched manner;

2. the clearance distance between the flange structure (15) and the concave structure (9) is matched with the tenon-and-mortise structure: Δ ═ 0.5mm to 1 mm;

3. flange structure (15) and concave structure (9) match (tenon fourth of twelve earthly branches) the direction chamfer C of structure: the guide chamfer is beneficial to the assembly convenience.

Fourthly, key parameters of the internal thread locking structure of the concave nut (2):

1. the internal thread of the concave nut (2) is asynchronous with the thread of the fastening bolt (6) and the flange nut (1) in the final fastening state, and a downward locking forced deformation stress is generated, so that the flange nut (1) and the concave nut (2) are prevented from rotating simultaneously;

2. asynchronous thread angle B: when B is 60 degrees, the hexagonal nut marks are processed when aligned;

3. the theoretical state forced locking interference quantity t is that the data measurement t is 0.216mm, can contain the tolerance of thread manufacturing and ensures locking;

4. the flange nut (1) and the concave nut (2) are provided with internal threads in a locking state with triangular marks aligned (as shown in figure 15), a Spiraloc wedge tap is recommended to be used for tapping, and common threads can also meet the requirement of locking and preventing co-rotation.

Fifthly, fastening operation:

the method comprises the following steps: the fastening bolt (6) and the flat gasket 2 are assembled in place;

step two: the concave nut (2) is normally fastened to a rated torque by using conventional tools such as a spanner and the like;

step three: the flange nut (1) is normally tightened with a conventional tool such as a wrench until it comes into contact with the flange nut (1) (the female thread machining alignment mark lags behind by about 2 hexagonal faces);

step four: and (3) continuously screwing the locking flange nut (1) until the mark is fastened in place and the chamfer is aligned (the internal thread processing is aligned and the mark lags behind 1 hexagonal surface), fastening in place, fitting the wedge-shaped convex surfaces, mutually meshing the ratchet wheels, matching the flanges with the groove mortise and tenon, forcibly deforming and locking the internal thread in the concave nut 6, and ensuring the reliability and durability of the function of tightening the nut when the nut is shaken more and more together by the 4 functional structures.

Sixth, disassembling operation:

1. normally disassembling the flange nut (1) by using a tool such as a spanner;

2. and then the concave nut (2) is normally disassembled.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the present invention is not limited to the above preferred embodiments, but rather, any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a realize more shake more tight function's locking nut that takes off which characterized in that: including flange nut (1) and concave nut (2), the terminal surface contact locking each other, flange nut (1) and concave nut (2) screw thread and fastening bolt (6) the screw thread interlock, concave nut (2) main part is flanged hexagon nut A (7), is provided with internal thread tapping alignment sign A (8) on its side, is provided with concave structure (9), locking wedge face A (10) and fastening corner cut sign A (11) that targets in place on its same terminal surface, concave structure (9), locking wedge face A (10) and fastening corner cut sign A (11) three that targets in place form a week, concave structure (9) area dodge corner cut, concave structure (9) function is the fourth of the twelve earthly branches structure, be provided with ratchet structure A (12) on the inner wall of concave structure (9), fastening corner cut sign A (11) that targets in place is for setting up in the trilateral corner cut on concave nut (2) terminal surface hexagon angle, locking wedge face A (10) and fastening corner cut sign A (11) that targets in place set up three and about spill nut (2) terminal surface center evenly distributed, flange nut (1) main part is hexagon nut B (13), is provided with internal thread tapping alignment sign B (14) on its side, is provided with flange structure (15) on its same terminal surface, locking wedge face B (16) and fastening corner cut sign B (17) that targets in place, flange structure (15) are the round platform form, and the function is the tenon structure of mortise and tenon structure, the central part of flange structure (15) communicates with each other and is provided with the internal thread with spill nut (2), the outer fringe part of flange structure (15) is provided with ratchet structure B (18), fastening corner cut sign B (17) that targets in place is for setting up the trilateral corner cut on hexagon nut B (13) terminal surface hexagon angle cut sign B (17), locking wedge face B (16) and fastening corner cut sign B (17) that targets in place set up threely and about hexagon nut The centers of the end surfaces of the mother B (13) are uniformly distributed.

2. The anti-loosening nut for achieving the function of tightening the vibration as claimed in claim 1, wherein: the locking wedge surface A (10) and the locking wedge surface B (16) are fan-shaped wedges, namely, the locking wedge surface A and the locking wedge surface B are fan-shaped in the horizontal direction and have wedge-shaped height difference in the vertical direction, the locking wedge surface A and the locking wedge surface B are respectively arranged on the top binding surfaces of the concave nut (2) and the flange nut (1), and the lead angle of the wedge-shaped inclined surface is larger than the lead angle of the thread.

3. The anti-loosening nut for achieving the function of tightening the nut with vibration according to claim 1 or 2, wherein: ratchet structure A (12) and ratchet structure B (18) include addendum (19) and back of tooth (20), addendum (19) is tangent with the circumferencial direction of ratchet structure A (12) and ratchet structure B (18), back of tooth (20) is perpendicular with the circumferencial direction of ratchet structure A (12) and ratchet structure B (18), back of tooth (20) on ratchet structure A (12) aligns with the starting point of locking wedge surface A (10), back of tooth (20) on ratchet structure B (18) aligns with the starting point of locking wedge surface B (16).

4. The anti-loosening nut for achieving the function of tightening the vibration as claimed in claim 1, wherein: the utility model discloses a hexagonal head nut, including hexagonal head nut B (13), internal thread tapping aligns sign A (8) and internal thread tapping aligns sign B (14) and is the sign of taking the closed angle, internal thread tapping aligns sign A (8) and internal thread tapping aligns sign B (14) and sets up in the side of flanged hexagonal head nut A (7), internal thread tapping aligns sign B (14) and sets up in the side of hexagonal head nut B (13).

5. The anti-loosening nut for achieving the function of tightening the vibration as claimed in claim 1, wherein: concave structure (9) and flange structure (15) all are provided with taper angle (22), taper angle (22) angle range 10 to 20 between, the clearance is 0.5mm to 1mm between the terminal surface of concave structure (9) and the inside terminal surface of flange structure (15), concave structure (9) outside terminal surface is provided with direction corner cut (21) with the inner wall juncture.

6. The anti-loosening nut for achieving the function of tightening the vibration as claimed in claim 1, wherein: the female nut (2) and the flange nut (1) are matched, processed and used, when an internal thread is processed, the internal thread tapping alignment mark A (8) of the female nut (2) and the internal thread tapping alignment mark B (14) of the flange nut (1) are aligned and then clamped tightly, the internal threads of the female nut (2) and the flange nut (1) are processed simultaneously by a screw tap, threads of the flange nut (1) and the female nut (2) are asynchronous with threads of a fastening bolt (6) in an assembling state, and the phenomenon that the female nut (2) and the flange nut (1) are loosened and disengaged in the same rotation mode is avoided.