Anti-loosening nut assembly

Abstract

The present invention provides a kind of anti-loosening nut assembly, which relates to the technical field of fasteners, including a nut body and a gasket which are sequentially arranged up and down, the outer movable sleeve of the gasket is provided with an anti-loosening ring sleeve, the bottom surface of the nut body is provided with a protrusion 1 and a protrusion 2, the protrusion 1 and the protrusion 2 are both in the shape of a right-angled triangle, and one right-angle side of the protrusion 1 and the protrusion 2 is fixedly arranged on the bottom surface of the nut body, the other right-angle sides of the protrusion 1 and the protrusion 2 are perpendicular to the bottom surface of the nut body, the hypotenuses of the protrusion 1 and the protrusion 2 are in the same direction, the gasket is a circular ring-shaped structure, the top surface of the gasket is provided with a groove 1 and a groove 2, and one end of the groove 1 is connected to the inner circle of the gasket, one end of the groove 2 is flush with the outer circular wall of the gasket, and the protrusion 1 and the protrusion 2 correspond to the positions of the groove 1 and the groove 2 respectively. The present invention has the advantages of improving the fastness of the connection by increasing the friction after tightening, and preventing the nut body from loosening.

Description

Technical Field

[0001] The invention relates to the technical field of fasteners, and in particular to a locking nut assembly. Background Art

[0002] Nuts are parts that tightly connect mechanical equipment. They can only be connected together through the inner thread, nuts and bolts of the same specifications. Ordinary nuts can only meet general equipment, but in high-frequency vibration equipment and harsh environments, nuts will loosen over time and fail to meet the tightening requirements. Therefore, anti-loosening must be carried out, otherwise it will affect normal work and cause accidents, so nuts with stronger tightness and anti-loosening are needed to meet these requirements. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a locking nut assembly which can improve the fastness of connection by increasing friction after tightening and can prevent the nut body from loosening.

[0004] In order to solve the above technical problems, the present invention provides a loose-proof nut assembly, comprising a nut body and a gasket arranged in sequence up and down, an outer movable sleeve of the gasket is provided with a loose-proof ring sleeve, a protrusion 1 and a protrusion 2 are arranged on the bottom surface of the nut body, the protrusion 1 and the protrusion 2 are both in the shape of a right-angled triangle, and one right-angle side of the protrusion 1 and the protrusion 2 is fixedly arranged on the bottom surface of the nut body, the other right-angle sides of the protrusion 1 and the protrusion 2 are perpendicular to the bottom surface of the nut body, the hypotenuses of the protrusion 1 and the protrusion 2 are in the same direction, and the gasket is a circular ring structure , a groove 1 and a groove 2 are arranged on the top surface of the gasket, and one end of the groove 1 is connected to the inner circle of the gasket, and one end of the groove 2 is flush with the outer circle wall of the gasket, and the protrusion 1 and the protrusion 2 correspond to the positions of the groove 1 and the groove 2 respectively, and the bottom surfaces of the groove 1 and the groove 2 are both inclined inclined surfaces, and the bottom surface of the groove 1 is parallel to the inclined side of the protrusion 1, and the bottom surface of the groove 2 is parallel to the inclined side of the protrusion 2, the inclined side of the protrusion 1 contacts the bottom surface of the groove 1, and the inclined side of the protrusion 2 contacts the bottom surface of the groove 2, and the gasket A circular ring gasket is fixed on the outer circular wall of the bottom, and the circular ring gasket and the bottom of the gasket are on the same plane. The anti-loosening ring sleeve includes an anti-loosening ring sleeve gasket and a fixed gasket. The anti-loosening ring sleeve gasket and the fixed gasket are both in the shape of a ring. A connecting ring is fixedly provided on the top of the inner circle of the anti-loosening ring sleeve gasket. An annular inner flange is provided on the connecting ring. The circular ring gasket is located in the inner circle of the anti-loosening ring sleeve gasket, and the bottom surface of the gasket contacts the top surface of the fixed gasket. An internal thread is provided at the bottom of the inner side wall of the anti-loosening ring sleeve gasket, and an external thread is provided on the top of the outer peripheral wall of the fixed gasket. The ring sleeve gasket is movably sleeved on the outside of the fixed gasket, and the anti-loosening ring sleeve gasket and the fixed gasket (5) are threadedly connected through internal threads and external threads. An internal threaded ring is fixedly arranged on the bottom surface of the fixed gasket, and the internal threaded ring has the same inner diameter as the nut body. An anti-skid clip is obliquely arranged on the bottom surface of the gasket. A plurality of anti-skid clip grooves are evenly distributed along the circumferential direction on the top surface of the fixed gasket. The positions of the anti-skid clip and the anti-skid clip groove correspond to each other up and down. A plurality of clip teeth are arranged in parallel and spaced order on the bottom surface of the anti-skid clip groove, and the anti-skid clip and the clip teeth are in contact with each other.

[0005] Preferably, the nut body is a hexagonal nut, and protrusion one and protrusion two are respectively fixedly arranged on two chamfers symmetrically along the axis of the nut body, so that when the nut body is tightened, protrusion one and protrusion two on the nut body can be respectively squeezed into groove one and groove two on the top surface of the gasket. Since the bottom surfaces of groove one and groove two are both inclined ramps, the gasket can be squeezed, so that the gasket generates a lateral shear force relative to the axis of the nut body, so that the inner circle of the gasket can be squeezed on the bolt in the nut body, thereby increasing the tightening force of the nut body and preventing the nut body from loosening.

[0006] Preferably, the anti-slip card is a plate-like structure, and the width of the anti-slip card is smaller than the length of the tooth. One end of the anti-slip card is fixedly set on the bottom surface of the gasket, and the other end of the anti-slip card is flat. The other end of the anti-slip card is perpendicular to the top surface of the fixed gasket, and the cross-section of the tooth is triangular. When the nut body is tightened to squeeze the gasket, the anti-slip card on the gasket can be inserted into the tooth at the corresponding position in the anti-slip groove according to the distance the gasket is squeezed and moved, thereby preventing the gasket from loosening and moving.

[0007] Preferably, a plurality of anti-slip protrusions are provided on the bottom surface of the nut body, and a plurality of anti-slip grooves are provided on the top surface of the gasket. The anti-slip protrusions are parallel to the anti-slip grooves, and the cross-sectional shape of the anti-slip protrusions and the anti-slip grooves are the same. The anti-slip protrusions are evenly distributed along the circumference of the nut body, and the anti-slip grooves are evenly distributed along the circumference of the gasket. When the nut body is tightened to squeeze the gasket, the anti-slip protrusions are in contact with the anti-slip grooves, which is beneficial to increase the friction between the nut body and the gasket, thereby achieving an anti-loosening effect.

[0008] Preferably, the inner diameter of the nut body is equal to or greater than the inner diameter of the gasket, so that after the nut body and the gasket are successively sleeved on the outside of the bolt, the nut body is tightened to squeeze the gasket, so that the gasket generates a lateral shear force relative to the axis of the nut body, so that the inner circle of the gasket can be squeezed on the bolt in the nut body, thereby increasing the tightening force of the nut body and preventing the nut body from loosening.

[0009] Preferably, the thickness of the annular gasket is equal to or less than the thickness of the connecting ring, which facilitates tightening the nut body to squeeze the gasket, so that the gasket generates a lateral shear force relative to the axis of the nut body, and when displacement occurs in the connecting ring, it will not interfere with the annular inner flange.

[0010] Preferably, the inner diameter of the fixing gasket is larger than the inner diameter of the internal threaded collar, and the fixing gasket and the internal threaded collar are coaxial, so that after the nut body and the fixing gasket are simultaneously mounted on the bolt, the fixing gasket will not interfere with the bolt.

[0011] Preferably, one end of the anti-slip card is fixedly arranged on the bottom surface of the gasket at an angle, and the angle between one end of the anti-slip card and the bottom surface of the gasket is 30 to 45 degrees. When the nut body is tightened to squeeze the gasket, the anti-slip card on the gasket can be inserted into the card teeth at the corresponding position in the anti-slip groove according to the distance the gasket is squeezed and moved, which can effectively prevent the gasket from loosening and moving.

[0012] Beneficial effects of the present invention:

[0013] (1) The cooperation between the protrusion 1, the protrusion 2, the groove 1 and the groove 2 enables the gasket to be squeezed when the nut body is tightened, so that the inner circle of the gasket is squeezed on the bolt, thereby increasing the friction between the nut body and the gasket and preventing the nut body from loosening;

[0014] (2) The anti-slip clip cooperates with the clip teeth in the anti-slip clip groove, which can better prevent the gasket from returning to its original position after the gasket moves perpendicular to the axis of the nut body to generate a lateral shear force; thereby effectively maintaining the locking effect between the gasket and the bolt;

[0015] (3) When the nut body is tightened to squeeze the gasket, the gasket is squeezed and moved, so that the anti-skid protrusion on the top surface of the gasket can be stuck in the anti-skid groove at the corresponding position on the bottom surface of the nut body, thereby increasing the friction between the nut body and the gasket;

[0016] (4) The outer movable sleeve of the fixed gasket is provided with a loose ring sleeve gasket. After the nut body is pressed against the gasket, the loose ring sleeve gasket can be rotated so that the annular inner flange can be pressed against the top surface of the gasket, which is beneficial to improve the stability of the gasket position and prevent the gasket from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a preferred understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural explosion diagram of a locking nut assembly of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of a nut body of a locking nut assembly of the present invention;

[0020] Figure 3 It is a schematic diagram of the anti-slip clamp position of a locking nut assembly of the present invention;

[0021] Figure 4 A schematic diagram of the position of the external thread of a locking nut assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the position of a locking nut assembly of the present invention when it is installed on a bolt;

[0023] Figure 6 It is a schematic diagram of the position of the anti-slip groove of a locking nut assembly of the present invention;

[0024] The accompanying drawings are marked as follows: 1. nut body; 11. protrusion one; 12. protrusion two; 13. anti-slip protrusion; 2. gasket; 21. groove one; 22. groove two; 23. circular ring gasket; 24. anti-slip clip; 25. anti-slip groove; 3. anti-loosening ring sleeve; 4. anti-loosening ring sleeve gasket; 41. connecting ring; 42. annular inner flange; 43. internal thread; 5. fixing gasket; 51. external thread; 52. internal thread collar; 53. anti-slip clip groove; 54. clip teeth; 6. bolt. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be described below with reference to the accompanying drawings.

[0026] like Figure 1-6As shown, a locking nut assembly of the present embodiment comprises a nut body 1 and a gasket 2 which are sequentially arranged up and down, an outer movable sleeve of the gasket 2 is provided with a locking ring sleeve 3, a protrusion 11 and a protrusion 2 12 are provided on the bottom surface of the nut body 1, the protrusion 1 11 and the protrusion 2 12 are both in the shape of a right-angled triangle, and a right-angled side of the protrusion 1 11 and the protrusion 2 12 are fixedly arranged on the bottom surface of the nut body 1, the other right-angled sides of the protrusion 1 11 and the protrusion 2 12 are perpendicular to the bottom surface of the nut body 1, the hypotenuses of the protrusion 1 11 and the protrusion 2 12 are in the same direction, the gasket 2 is a circular ring-shaped structure, and the top surface of the gasket 2 A groove 21 and a groove 22 are provided, and one end of the groove 21 is connected to the inner circle of the gasket 2, and one end of the groove 22 is flush with the outer circle wall of the gasket 2. The protrusion 11 and the protrusion 22 correspond to the positions of the groove 21 and the groove 22 respectively. The bottom surfaces of the groove 21 and the groove 22 are both inclined bevels, and the bottom surface of the groove 21 is parallel to the bevel of the protrusion 11, and the bottom surface of the groove 22 is parallel to the bevel of the protrusion 12. The bevel of the protrusion 11 contacts the bottom surface of the groove 21, and the bevel of the protrusion 12 contacts the bottom surface of the groove 22. A circular gasket 23 is fixedly sleeved on the outer circular wall at the bottom of the gasket 2, and the circular gasket 23 is on the same plane as the bottom of the gasket 2. The anti-loosening ring sleeve 3 includes an anti-loosening ring sleeve gasket 4 and a fixed gasket 5. The anti-loosening ring sleeve gasket 4 and the fixed gasket 5 are both annular, and a connecting ring 41 is fixedly arranged on the inner circular top of the anti-loosening ring sleeve gasket 4. The connecting ring 41 is provided with an annular inner flange 42. The circular gasket 23 is located in the inner circle of the anti-loosening ring sleeve gasket 4, and the bottom surface of the gasket 2 is in contact with the top surface of the fixed gasket 5. The bottom of the inner side wall of the anti-loosening ring sleeve gasket 4 is provided with an internal thread 43, and the top of the outer peripheral wall of the fixed gasket 5 is provided with an external thread 51. The loose ring washer 4 is movably sleeved on the outside of the fixed gasket 5, and the anti-loosening ring washer 4 and the fixed gasket 5 are threadedly connected through the internal thread 43 and the external thread 51. An internal threaded ring 52 is fixedly arranged on the bottom surface of the fixed gasket 5. The internal threaded ring 52 has the same inner diameter as the nut body 1. An anti-skid clip 24 is obliquely arranged on the bottom surface of the gasket 2. A plurality of anti-skid grooves 53 are evenly distributed along the circumferential direction on the top surface of the fixed gasket 5. The positions of the anti-skid clips 24 and the anti-skid grooves 53 correspond to each other up and down. A plurality of teeth 54 are arranged in parallel and at intervals on the bottom surface of the anti-skid groove 53, and the anti-skid clips 24 are in contact with the teeth 54.

[0027] The nut body 1 is a hexagonal nut, and the protrusion 11 and the protrusion 2 12 are respectively fixedly arranged on the two chamfers symmetrically along the axis of the nut body 1, so that when the nut body 1 is tightened, the protrusion 11 and the protrusion 2 12 on the nut body 1 can be respectively squeezed into the groove 1 21 and the groove 22 on the top surface of the gasket 2. Since the bottom surfaces of the groove 1 21 and the groove 22 are both inclined bevels, the gasket 2 can be squeezed, so that the gasket 2 generates a lateral shear force relative to the axis of the nut body 1, so that the inner circle of the gasket 2 can be squeezed on the bolt 6 in the nut body 1, thereby increasing the tightening force of the nut body 1 and preventing the nut body 1 from loosening. The anti-skid card 24 is a plate-like structure, and the width of the anti-skid card 24 is smaller than the card. The length of the tooth 54, one end of the anti-skid card 24 is fixedly set on the bottom surface of the gasket 2, and the other end of the anti-skid card 24 is flat, and the other end of the anti-skid card 24 is perpendicular to the top surface of the fixed gasket 5, and the cross-section of the tooth 54 is triangular. When the nut body 1 is tightened to squeeze the gasket 2, the anti-skid card 24 on the gasket 2 can be inserted into the tooth 54 at the corresponding position in the anti-skid groove 53 according to the distance the gasket 2 is squeezed and moved, so as to prevent the gasket 2 from loosening and moving. A plurality of anti-skid protrusions 13 are also arranged on the bottom surface of the nut body 1, and a plurality of anti-skid grooves 25 are also arranged on the top surface of the gasket 2. The anti-skid protrusions 13 are parallel to the anti-skid grooves 25, and the cross-sectional shapes of the anti-skid protrusions 13 and the anti-skid grooves 25 are the same, and the anti-skid protrusions 13 are arranged along the nut body 1 is evenly distributed along the circumference of the gasket 2, and the anti-skid grooves 25 are evenly distributed along the circumference of the gasket 2. When the nut body 1 is tightened to squeeze the gasket 2, the anti-skid protrusions 13 are in contact with the anti-skid grooves 25, which is beneficial to improving the friction between the nut body 1 and the gasket 2, thereby preventing loosening. The inner diameter of the nut body 1 is equal to or greater than the inner diameter of the gasket 2, which is convenient for sequentially sleeved the nut body 1 and the gasket 2 on the outside of the bolt 6, tightening the nut body 1 to squeeze the gasket 2, so that the gasket 2 generates a lateral shear force relative to the axis of the nut body 1, so that the inner circle of the gasket 2 can be squeezed on the bolt 6 in the nut body 1, thereby increasing the tightening force of the nut body 1 and preventing the nut body 1 from loosening. The thickness of the annular gasket 23 is equal to or less than The thickness of the connecting ring 41 is convenient for tightening the nut body 1 to squeeze the gasket 2, so that the gasket 2 generates a lateral shear force relative to the axis of the nut body 1, and when displacement occurs in the connecting ring 41, it will not interfere with the annular inner flange 42. The inner diameter of the fixed gasket 5 is larger than the inner diameter of the internal threaded ring 52, and the fixed gasket 5 is coaxial with the internal threaded ring 52, so that after the nut body 1 and the fixed gasket 5 are simultaneously mounted on the bolt 6, the fixed gasket 5 will not interfere with the bolt 6. One end of the anti-skid card 24 is tilted and fixedly arranged on the bottom surface of the gasket 2, and the angle between one end of the anti-skid card 24 and the bottom surface of the gasket 2 is 30 to 45 degrees. When the nut body 1 is tightened to squeeze the gasket 2, according to the distance the gasket 2 is squeezed and moved,The anti-skid card 24 on the gasket 2 can be inserted into the card teeth 54 at the corresponding position in the anti-skid card groove 53, which can effectively prevent the gasket 2 from loosening and moving.

[0028] The use principle of the present invention is: firstly, the fixing gasket 5 is threadedly connected to the outside of the bolt 6 through the internal threaded collar 52, and then the anti-loosening ring sleeve 4 is threadedly connected to the external thread 51 on the outer peripheral wall of the top surface of the fixing gasket 5 through the internal thread 43, and then the nut body 1 and the gasket 2 are stacked up and sleeved on the outside of the bolt 6, and the protrusion 11 and the protrusion 2 12 on the nut body 1 can be inserted into the groove 1 21 and the groove 22 on the top surface of the gasket 2, firstly tighten the fixing gasket 5 on the bolt 6 into place, and then rotate and tighten the nut body 1, which can drive the gasket 2 to rotate together through the protrusion 11 and the protrusion 2 12 at the same time. When the nut body 1 is tightened, the screw The female body 1 squeezes the bottom surfaces of the groove 1 21 and the groove 2 22 respectively through the protrusion 1 11 and the protrusion 2 12, so that the gasket 2 generates a lateral shear force relative to the axis of the nut body 1, so that the inner circle of the gasket 2 can be squeezed on the bolt 6 in the nut body 1, thereby increasing the tightening force of the nut body 1 and preventing the nut body 1 from loosening; when the gasket 2 rotates, the anti-skid card 24 on the gasket 2 is rotated into the anti-skid card groove 53 at the corresponding position. Since the other end of the anti-skid card 24 is flat, when it is inserted into the card tooth 54 at the corresponding position in the anti-skid card groove 53, the anti-skid card 24 can be squeezed to generate a The anti-slip card 24 is deformed to a certain extent, so that the other end of the anti-slip card 24 is stuck between two adjacent card teeth 54, which can further prevent the gasket 2 from loosening and moving; when the nut body 1 is rotated into place, the anti-loosening ring sleeve gasket 4 is rotated again, so that the annular inner flange 42 on the anti-loosening ring sleeve gasket 4 is squeezed onto the top surface of the gasket 2, which is convenient for increasing the friction between the gasket 2 and the fixed gasket 5, which is beneficial to prevent the gasket 2 from loosening, thereby increasing the anti-loosening effect of the nut body 1; the anti-loosening ring sleeve gasket 4 can also be removed from the fixed gasket 5 and not used as needed, and only the fixed gasket 5, the anti-loosening ring sleeve gasket 4 and the nut body 1 are installed on the bolt 6 for tightening; the nut body 1 can also be used alone 1 and the washer 2 are installed on the bolt 6 for tightening, that is, the nut body 1 and the washer 2 are stacked up and down and then sleeved on the outside of the bolt 6, and the protrusion 11 and the protrusion 2 12 on the nut body 1 can be inserted into the groove 1 21 and the groove 22 on the top surface of the washer 2. When the nut body 1 is tightened, the nut body 1 squeezes the bottom surfaces of the groove 1 21 and the groove 2 22 respectively through the protrusion 1 11 and the protrusion 2 12, so that the washer 2 generates a lateral shear force relative to the axis of the nut body 1, so that the inner circle of the washer 2 can be squeezed on the bolt 6 in the nut body 1, thereby increasing the tightening force of the nut body 1 and preventing the nut body 1 from loosening.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A locking nut assembly, characterized in that: The invention comprises a nut body (1) and a gasket (2) which are arranged in sequence up and down, the outer movable sleeve of the gasket (2) is provided with a loosening prevention ring sleeve (3), the bottom surface of the nut body (1) is provided with a protrusion 1 (11) and a protrusion 2 (12), the protrusion 1 (11) and the protrusion 2 (12) are both in the shape of a right triangle, and one right angle side of the protrusion 1 (11) and the protrusion 2 (12) is fixedly arranged on the bottom surface of the nut body (1), the other right angle sides of the protrusion 1 (11) and the protrusion 2 (12) are perpendicular to the bottom surface of the nut body (1), the oblique sides of the protrusion 1 (11) and the protrusion 2 (12) are in the same direction, the gasket (2) is in the shape of a circular ring, and the top surface of the gasket (2) is provided with a groove 1 (21) and a groove 2 ( 22), and one end of the groove 1 (21) is connected to the inner circle of the gasket (2), and one end of the groove 2 (22) is flush with the outer circular wall of the gasket (2), the protrusion 1 (11) and the protrusion 2 (12) correspond to the positions of the groove 1 (21) and the groove 2 (22) respectively, and the bottom surfaces of the groove 1 (21) and the groove 2 (22) are both inclined inclined surfaces, and the bottom surface of the groove 1 (21) is parallel to the inclined edge of the protrusion 1 (11), and the bottom surface of the groove 2 (22) is parallel to the inclined edge of the protrusion 2 (12), the inclined edge of the protrusion 1 (11) contacts the bottom surface of the groove 1 (21), and the inclined edge of the protrusion 2 (12) contacts the bottom surface of the groove 2 (22), and the outer circular wall at the bottom of the gasket (2) The upper fixing sleeve is provided with a circular ring gasket (23), and the circular ring gasket (23) and the bottom of the gasket (2) are on the same plane. The anti-loosening ring sleeve (3) comprises an anti-loosening ring sleeve gasket (4) and a fixed gasket (5). The anti-loosening ring sleeve gasket (4) and the fixed gasket (5) are both in the shape of a circular ring. A connecting ring (41) is fixedly provided on the top of the inner circle of the anti-loosening ring sleeve gasket (4). An annular inner flange (42) is provided on the connecting ring (41). The circular ring gasket (23) is located inside the inner circle of the anti-loosening ring sleeve gasket (4), and the bottom surface of the gasket (2) is in contact with the top surface of the fixed gasket (5). An internal thread (43) is provided on the bottom of the inner side wall of the anti-loosening ring sleeve gasket (4), and an external thread (51) is provided on the top of the outer peripheral wall of the fixed gasket (5). 4) The movable sleeve is arranged on the outside of the fixed gasket (5), and the anti-loosening ring washer (4) and the fixed gasket (5) are threadedly connected through an internal thread (43) and an external thread (51). An internal threaded collar (52) is fixedly arranged on the bottom surface of the fixed gasket (5), and the internal threaded collar (52) has the same inner diameter as the nut body (1). An anti-skid clip (24) is obliquely arranged on the bottom surface of the gasket (2). A plurality of anti-skid grooves (53) are evenly distributed along the circumferential direction on the top surface of the fixed gasket (5). The positions of the anti-skid clips (24) and the anti-skid grooves (53) correspond to each other in the upper and lower directions. A plurality of teeth (54) are arranged in parallel and spaced order on the bottom surface of the anti-skid groove (53), and the anti-skid clips (24) and the teeth (54) are in contact with each other.

2. A locking nut assembly according to claim 1, characterized in that: The nut body (1) is a hexagonal nut, and the first protrusion (11) and the second protrusion (12) are respectively fixedly arranged on two chamfers symmetrically along the axis of the nut body (1).

3. The anti-loosening nut assembly according to claim 1, characterized in that: The anti-skid card (24) is a plate-shaped structure, and the width of the anti-skid card (24) is smaller than the length of the latch tooth (54). One end of the anti-skid card (24) is fixedly arranged on the bottom surface of the gasket (2), and the other end of the anti-skid card (24) is flat. The other end of the anti-skid card (24) is perpendicular to the top surface of the fixed gasket (5), and the cross section of the latch tooth (54) is triangular.

4. The anti-loosening nut assembly according to claim 1, characterized in that: A plurality of anti-skid protrusions (13) are also provided on the bottom surface of the nut body (1), and a plurality of anti-skid grooves (25) are also provided on the top surface of the gasket (2). The anti-skid protrusions (13) and the anti-skid grooves (25) are parallel to each other, and the cross-sectional shapes of the anti-skid protrusions (13) and the anti-skid grooves (25) are the same. The anti-skid protrusions (13) are evenly spaced along the circumference of the nut body (1), and the anti-skid grooves (25) are evenly spaced along the circumference of the gasket (2).

5. The anti-loosening nut assembly according to claim 1, characterized in that: The inner diameter of the nut body (1) is equal to or greater than the inner diameter of the gasket (2).

6. The anti-loosening nut assembly according to claim 1, characterized in that: The thickness of the circular ring gasket (23) is equal to or smaller than the thickness of the connecting ring (41).

7. The anti-loosening nut assembly according to claim 1, characterized in that: The inner diameter of the fixed gasket (5) is greater than the inner diameter of the internal threaded collar (52), and the fixed gasket (5) and the internal threaded collar (52) are coaxial.

8. The anti-loosening nut assembly according to claim 3, characterized in that: One end of the anti-skid card (24) is fixedly arranged on the bottom surface of the gasket (2) at an angle, and the angle between one end of the anti-skid card (24) and the bottom surface of the gasket (2) is 30 to 45 degrees.

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