CN214533965U

CN214533965U - Anti-loose locking ring

Info

Publication number: CN214533965U
Application number: CN202120418197.6U
Authority: CN
Inventors: 韩树海
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-29
Anticipated expiration: 2031-02-26

Abstract

The utility model belongs to the field of machinery, in particular to locking device. The anti-loosening locking ring has two forms of end surface locking and circumferential locking; the ring body is provided with a special-shaped groove, a rolling body is placed in the groove, the position of the rolling body in the groove is kept by a retainer and a special-shaped spring, and the spring is connected with the ring body or the sealing cover. The utility model originally creates a mode of eliminating the looseness of the bolt and the nut, has simple structure, absolute 100 percent of looseness prevention performance, never looseness, repeated use and wide application; the locking bolt and the locking nut are suitable for bolts and nuts which need absolute and permanent locking in various occasions; can completely replace and is superior to the prior import anti-loose product.

Description

Anti-loose locking ring

Technical Field

The utility model belongs to the field of machinery, in particular to locking means, like bolt and nut's locking etc.

Background

The conventional bolt and nut commonly used anti-loosening methods comprise three methods: friction locking, mechanical locking and permanent locking. Mechanical and frictional lockouts are referred to as removable lockouts, while permanent lockouts are referred to as non-removable lockouts. The common permanent anti-loosening method comprises the following steps: spot welding, riveting, gluing, etc. The method mostly destroys the threaded fastener when being disassembled, and cannot be used repeatedly. The common friction anti-loosening methods are as follows: using a gasket, a self-locking nut, a double nut, etc. Common mechanical anti-loosening methods: utilizing split pins, stop washers, stringing steel cables, and the like. However, these methods do not satisfy the requirements of particularly important connection occasions, cannot achieve absolute looseness prevention, and cannot achieve repeated use and never loose.

The inventor's patent CN201910850502.6 never-loose interlocking non-return nut discloses two kinds of never-loose interlocking non-return nuts, one is a plane interlocking non-return nut, the lower end surface of the nut is upwards provided with a spring hole in an inclined way, a rolling body and a spring are arranged in the spring hole, the rolling body partially protrudes out of the lower end surface of the nut, an orifice at the upper end of the spring hole is provided with a lock pin hole, a self-locking lock pin is inserted, and the rolling body is connected with the lock pin through the spring; the other type is a rotation direction interlocking non-return nut, wherein a spring groove is formed in the upper end face of the nut, a spring jack is formed in one end of the spring groove, and a special-shaped spring is placed in the spring groove; a special-shaped groove is formed in the inner edge of the nut below the spring groove, a rolling body is placed in the special-shaped groove, a central hole is formed in the rolling body, one end of the special-shaped spring is inserted into the central hole of the rolling body, the other end of the special-shaped spring is inserted into the spring insertion hole, and a sealing cover is additionally arranged on the upper end face of the spring groove; the two nuts can be realized by never loosening, but in some occasions, the interlocking non-return nuts are not suitable to be used, and the application range is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the unsuitable use of some application places at present and never becoming flexible interlocking end-to-end nut, need prevent the not hard up problem of bolt and nut etc. again, provide a locking lock ring to guarantee bolt and nut etc. can absolutely permanent locking again can permanent used repeatedly, the structure is simpler, locking dependable performance, and it is extensive to use, is applicable to each machinery.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is:

according to the first scheme, the anti-loosening locking ring is an end face locking ring, a spiral special-shaped groove is formed in one end face of a ring body, rolling bodies are placed in the special-shaped groove, the height of the large end of the special-shaped groove is larger than the diameter of the rolling bodies, and the height of the small end of the special-shaped groove is smaller than the diameter of the rolling bodies; the rolling body is connected with one end of the special-shaped spring in a sliding mode, and the other end of the special-shaped spring is inserted into the spring hole of the ring body.

The lead angle a of the bottom surface of the special-shaped groove is not more than the friction angle between the bolt and the nut and the fastened piece, and the screwing direction of the special-shaped groove is the same as the screwing direction of the bolt and the nut.

The spring hole that has two at least, be one respectively and lie in the spring hole of the spring unblock position on the ring body, and at least one spring hole that lies in the operating position on the ring body, the spring hole of unblock position is close to the dysmorphism groove than the spring hole of operating position.

The cross section of the special-shaped groove is arc-shaped, trapezoid-shaped, V-shaped and the like, and is matched with the rolling body in shape.

The locking ring is a circumferential locking ring and comprises a sealing cover and a ring body, the sealing cover is connected with the ring body in a sliding mode through an embedded groove, a special-shaped groove is formed in the inner wall of the ring body along the circumferential direction, a rolling body is placed in the special-shaped groove, the special-shaped groove is a reducing special-shaped groove, and the height of the small end of the special-shaped groove is smaller than the diameter of the rolling body; the rolling body is connected with one end of the special-shaped spring in a sliding mode, the other end of the special-shaped spring is connected with the sealing cover in a sliding mode, and the end head of the special-shaped spring is inserted into the limiting groove.

The locking ring is a circumferential locking ring and comprises a sealing cover and a ring body, the sealing cover is connected with the ring body in a sliding mode through an embedding groove, a special-shaped groove is formed in the inner wall of the ring body along the circumferential direction, a rolling body is placed in the special-shaped groove, the special-shaped groove is a variable-diameter special-shaped groove, and the height of the small end of the special-shaped groove is smaller than the diameter of the rolling body; the rolling body is placed in the special-shaped groove through the retainer, the retainer is connected with the sealing cover, one end of the special-shaped spring is connected with the sealing cover in a sliding mode, the other end of the special-shaped spring is connected with the ring body through the spring hole, and the end head of the special-shaped spring is inserted into the limiting groove.

The at least two limiting grooves are respectively located at the working position and the unlocking position of the spring, and the unlocking position limiting grooves are closer to the special-shaped grooves than the working position limiting grooves.

The closing cap is installed at an end face of the ring body and is provided with an inlay, and the inlay is slidably installed in the slideway on the outer wall of the ring body.

The included angle a between the working curved surface of the special-shaped groove and the cylindrical surface of the bolt is not more than the friction angle between the bolt and the nut, and the small end of the special-shaped groove points to the screw thread turning direction.

The number of the special-shaped grooves formed in the ring body is generally 1-18.

The utility model has the advantages that: need not to change current bolt and nut structure, the cooperation is used the utility model discloses locking lock ring realizes locking purpose, and two kinds of forms of terminal surface locking and circumference locking are selected according to the use scene, and the extinction bolt and nut of brand-new structural style is not hard up, and locking lock ring structure is simple, and locking performance is absolute 100%, can guarantee that bolt and nut never becomes flexible, can permanent used repeatedly again. When the special-shaped spring is located at a working position during working, all the phase contact pieces cannot be loosened because of the non-reversibility; when the bolt and the nut are unscrewed, the special-shaped spring is moved to an unlocking position, the rolling body is separated from each contact surface, and the locking is released.

The utility model has wider application, is suitable for various occasions with screwing strength and absolute anti-loosening, in particular to occasions with low screwing strength and occasions with uneven and strong vibration surfaces of the fastened pieces; such as various vehicles, engineering machinery, high-speed rails, chemical equipment with strict sealing, nuclear facilities and the like, can completely replace and be superior to imported anti-loose products in important occasions such as high-speed rails, military industry and the like.

Drawings

FIG. 1 is a schematic view of an end face anti-loosening locking ring structure.

FIG. 2 is a cross-sectional view of the end face check lock ring.

Fig. 3 is a view showing a state in which the end surface lock ring is used.

FIG. 4 is a schematic view of a B-ring type circumferential anti-loosening locking ring.

FIG. 5 is a schematic view of an A-shaped circumferential anti-loosening locking ring.

FIG. 6 is a cross-sectional view of an A-shaped circumferential anti-loosening locking ring.

FIG. 7 is a schematic view of an A-ring type circumferential anti-loosening locking ring cover.

Fig. 8 is a view showing an a-type circumferential lock-up in use.

In the figure: 1 a ring body; 2, a special-shaped groove; 3, spring holes; 4, a tabling groove; 5, limiting grooves; 6, rolling bodies; 7, a retainer; 8, a special-shaped spring; 9, sealing the cover; 10 connecting ports; a reinforcing gasket; 12, bolts; 13 a nut; fastened piece 14.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the specific embodiments.

Example 1

The bolt and nut lock ring shown in fig. 1-2 is an end face anti-loose lock ring, wherein a spiral special-shaped groove 2 is formed in one end face of a ring body 1, a rolling body 6 is placed in the groove, the large end of the special-shaped groove is positioned on the end face and is higher than the diameter of the rolling body, and the small end of the special-shaped groove is lower than the diameter of the rolling body; the rolling body is connected with one end of the special-shaped spring in a sliding manner, the rolling body 6 keeps protruding out of the end face of the ring body through the special-shaped spring 8, the other end of the special-shaped spring is inserted into a spring hole of the ring body, and the special-shaped spring 8 is connected with the ring body 1 through the spring hole 3; the at least two spring holes are respectively positioned at the working position and the unlocking position of the spring, and the spring hole at the unlocking position is closer to the special-shaped groove than the spring hole at the working position; the lead angle a of the bottom surface of the special-shaped groove 2 is not more than the friction angle between the bolt and the nut and the fastened piece, the screwing direction is the same as the thread, the number of the special-shaped grooves 2 arranged on the ring body 1 is generally between 1 and 3, and if the specification of the ring body is larger, the number of the special-shaped grooves can be more than 10 according to the requirement.

The cross section of the special-shaped groove is arc-shaped, trapezoid-shaped, V-shaped and the like, and the special-shaped groove is matched with the rolling body in shape.

FIG. 3 is a schematic view of the installation and use thereof; when the locking device works, the locking ring is arranged between the bolt 12 and the nut 13 and the fastened piece 14, the end surface with the special-shaped groove can be contacted with the end surface of the bolt 12 and the nut 13 or the plane of the fastened piece 14, but the consistent screwing directions are ensured; the rolling body 6 contacts with the contact surface at first, along with the precession of the contact surface, the rolling body rolls from the small end to the big end in the special-shaped groove, when the rolling body is pressed into the end face of the ring body, the end face of the ring body is tightly combined with the contact surface without a gap, a one-way locking is formed, and all the phase contact pieces can not be loosened because of the non-reversion; when the bolt and the nut are unscrewed, the spring 8 is moved to an unlocking position, the spring drives the rolling body to roll towards the large end of the special-shaped groove, the rolling body 6 is separated from each contact surface, and locking is released; if the contact surface strength of the fastened piece and the anti-loose locking ring is not enough, the reinforcing gasket 11 can be additionally arranged on the end surface of the special-shaped groove.

Example 2

As shown in fig. 4, a B-shaped circumferential anti-loose lock ring includes a sealing cover 9 and a ring body 1, a special-shaped groove 2 is formed on the ring body 1, a rolling element 6 is placed in the groove, the rolling element 6 is held in the special-shaped groove by a special-shaped spring 8 and protrudes out of the inner wall surface of the ring body, the other end of the special-shaped spring 8 is connected with the sealing cover 9 and a limiting groove 5, at least two limiting grooves are respectively located at a working position and an unlocking position of the spring, and the unlocking position limiting groove is closer to the special-shaped groove than the working position limiting groove; the included angle a between the working curved surface of the special-shaped groove 2 and the cylindrical surface of the bolt 12 is less than or equal to the friction angle between the bolt and the nut, and the small end of the special-shaped groove points to the thread turning direction; the sealing cover 9 is connected with the ring body 1 in a sliding way through the embedding groove 4, and the connecting port 10 is connected with the spring 8; the number of the special-shaped grooves 2 formed on the ring body 1 is generally 1-18.

Example 3

As shown in fig. 5-7, the a-shaped circumferential anti-loosening locking ring includes a sealing cover 9 and a ring body 1, a special-shaped groove 2 is formed on the ring body 1, a rolling element 6 is placed in the groove, the rolling element 6 is held in the groove by a retainer 7 and protrudes out of the inner wall surface of the ring body, the retainer 7 is connected with the sealing cover 9, one end of a special-shaped spring 8 is connected with the ring body 1, and the other end is connected with the sealing cover 9 and a limiting groove 5; the at least two limiting grooves are respectively positioned at the working position and the unlocking position of the spring, and the unlocking position limiting groove is closer to the special-shaped groove than the working position limiting groove; the included angle a between the working curved surface of the special-shaped groove 2 and the cylindrical surface of the bolt 12 is less than or equal to the friction angle between the bolt and the nut, and the small end of the special-shaped groove points to the thread turning direction; the sealing cover 9 is connected with the ring body 1 in a sliding way through the embedding groove 4, and the connecting port 10 is connected with the spring 8; the number of the special-shaped grooves 2 formed on the ring body 1 is generally 1-18.

During working, as shown in fig. 8, the seal cover 9 is rotated to push the rolling body 6 to roll from the small end to the large end of the special-shaped groove to the unlocking position, the locking ring is sleeved at the rear part of the nut, and then the seal cover is rotated to enable the special-shaped spring to reach the working position and be kept at the working position, so that the end face of the ring body 1 is in close contact with the end face of the nut 12; the A-shaped ring rolling body 6 is contacted with the special-shaped groove 2 and the thread working surface through the linkage action of the spring 8, the sealing cover 9 and the retainer 7 to form one-way self-locking, and the nut 13 cannot be reversely loosened; the B-shaped ring rolling body 6 is contacted with the special-shaped groove 2 and the thread working surface under the action of the spring 8 to form one-way self-locking, and the nut 13 cannot be reversely loosened; when the nut is unscrewed, the sealing cover 9 is rotated until the spring 8 enters an unlocking position, the rolling body 6 continuously rolls towards the large end in the special-shaped groove, and the rolling body is separated from the working surface to unlock, so that the locking ring can be taken down to unscrew the nut.

Claims

1. The anti-loosening locking ring is characterized in that the anti-loosening locking ring is an end face locking ring, a spiral special-shaped groove is formed in one end face of the ring body, rolling bodies are placed in the special-shaped groove, the large end of the special-shaped groove is located on the end face and is higher than the diameter of the rolling bodies, and the small end of the special-shaped groove is lower than the diameter of the rolling bodies; the rolling body is connected with one end of the special-shaped spring in a sliding mode, and the other end of the special-shaped spring is inserted into the spring hole of the ring body.

2. The anti-loose locking ring according to claim 1, wherein the lead angle a of the bottom surface of the profiled groove is not more than the friction angle between the bolt and the nut and the fastened piece, and the screwing direction is the same as the screwing direction of the screw thread.

3. The anti-loose locking ring as defined in claim 1, wherein the at least two spring holes are a spring hole located in the ring body in the spring unlocking position and at least one spring hole located in the ring body in the operating position, the spring hole in the unlocking position being closer to the profiled groove than the spring hole in the operating position.

4. The locking ring is characterized in that the locking ring is a circumferential locking ring and comprises a sealing cover and a ring body, the sealing cover is in sliding connection with the ring body through an embedded groove, a special-shaped groove is formed in the inner wall of the ring body along the circumferential direction, a rolling body is placed in the special-shaped groove, the special-shaped groove is a variable-diameter special-shaped groove, and the height of the small end of the special-shaped groove is smaller than the diameter of the rolling body; the rolling body is connected with one end of the special-shaped spring in a sliding mode, the other end of the special-shaped spring is connected with the sealing cover in a sliding mode, and the end head of the special-shaped spring is inserted into the limiting groove.

5. The locking ring is characterized in that the locking ring is a circumferential locking ring and comprises a sealing cover and a ring body, the sealing cover is in sliding connection with the ring body through an embedded groove, a special-shaped groove is formed in the inner wall of the ring body along the circumferential direction, a rolling body is placed in the special-shaped groove, the special-shaped groove is a variable-diameter special-shaped groove, and the height of the small end of the special-shaped groove is smaller than the diameter of the rolling body; the rolling body is kept in the special-shaped groove through the retainer, the retainer is connected with the sealing cover, one end of the special-shaped spring is connected with the sealing cover in a sliding mode, the other end of the special-shaped spring is connected with the ring body through the spring hole, and the end head of the special-shaped spring is inserted into the limiting groove.

6. The anti-loosening locking ring according to claim 4 or 5, wherein the at least two limiting grooves are respectively located at the working position and the unlocking position of the spring, and the unlocking position limiting groove is closer to the special-shaped groove than the working position limiting groove.

7. The locking ring of claim 4 or 5 wherein said cover is mounted on an end face of the ring body and carries an inlay which is slidably mounted in a slideway in the outer wall of the ring body.

8. The anti-loose locking ring according to claim 4 or 5, characterized in that the angle a between the working curved surface of the shaped groove and the cylindrical surface of the bolt is not larger than the friction angle between the bolt and the nut, and the small end of the shaped groove points to the thread turning direction.

9. The anti-loosening locking ring as claimed in claim 4 or 5, wherein the number of the irregular grooves formed in the ring body is 1 to 18.