CN109083917B - Double anti-loose vibration-absorbing self-locking nut - Google Patents
Double anti-loose vibration-absorbing self-locking nut Download PDFInfo
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- CN109083917B CN109083917B CN201811264969.4A CN201811264969A CN109083917B CN 109083917 B CN109083917 B CN 109083917B CN 201811264969 A CN201811264969 A CN 201811264969A CN 109083917 B CN109083917 B CN 109083917B
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- lower body
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- friction
- loosening
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- 230000000694 effects Effects 0.000 claims abstract description 14
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 11
- 230000035939 shock Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009290 primary effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/103—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking cup washer, ring or sleeve surrounding the nut or bolt head and being partially deformed on the nut or bolt head, or on the object itself
- F16B39/105—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking cup washer, ring or sleeve surrounding the nut or bolt head and being partially deformed on the nut or bolt head, or on the object itself locking the bold head or nut into a hole or cavity, e.g. with the cup washer, ring or sleeve deformed into a dimple in the cavity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
A double anti-loosening vibration-absorbing self-locking nut solves the problems that the nut of the existing bolt assembly cannot meet anti-loosening requirements, the repeated use rate of the nut is reduced, and the like. The upper body and the lower body which are the same with the external threads of the matched connecting bolt are included, and the technical key points are that: a friction vibration absorbing pad is arranged between the upper end face of the lower body eccentric boss and the inner cavity of the upper body eccentric hole, the bottom face of the friction vibration absorbing pad and the upper end face of the lower body eccentric boss adopt identical conical surfaces, a friction vibration absorbing ring is arranged between the periphery of the lower body eccentric boss and an annular groove at the inner periphery of the upper body eccentric hole, an upper inner thread provided with an upper concentric mark and a lower inner thread provided with a lower concentric mark are arranged, the friction vibration absorbing pad and the upper end face of the lower body eccentric boss are on the same axis in an initial state, and the upper concentric mark and the lower concentric mark are overlapped. The anti-loosening device is simple in structure, reasonable in design, capable of remarkably enhancing anti-loosening effect, easy to process, convenient to assemble and disassemble, capable of improving the repeated use rate of nuts, and capable of meeting the strict requirement of high-speed operation equipment for preventing threaded connection from loosening.
Description
Technical Field
The invention relates to a locknut for a bolt assembly, in particular to a double lockshock-absorbing type self-locking nut which can be matched with a connecting bolt to generate the lockeffect of metal, nonmetal, metal and the like. The nut is mainly used for mechanical equipment which is matched with a bolt assembly and is connected with important parts needing to strictly prevent the loosening of the nut.
Background
The fastening piece for the threaded connection of the mechanical equipment is a bolt assembly formed by bolts, nuts, washers and the like, and the main function of the fastening piece is to realize the connection of parts. However, in the mechanical equipment for connecting important parts, which needs to strictly prevent the loosening of the nut, the prior locknut matched with the bolt assembly used by the conventional locknut method is difficult to meet the locknut requirement for connecting the important parts.
Currently, in order to solve the above-mentioned problems, there are developed a number of anti-loosening structural designs using a double nut combination, such as those disclosed in documents of patent GB1547585, DE364066825, FR 1.217.394, EP0362132A1, 2003-42128A, etc. However, these structures have found some problems in use: firstly, the nut cannot be prevented from generating larger additional axial stress on the connecting bolt when the nut is in loose prevention; and secondly, the anti-loosening requirements of the bolt assembly on working conditions of vibration alternation, high frequency, high strength, long period and the like cannot be met. JP 2007-211892A discloses a combined locknut assembly formed by connecting a washer and a deformable thin-walled sleeve with a frustum by using a cylindrical hole and a conical hole formed at the lower end of the nut. The main anti-loosening design is realized by means of deformation of the deformable thin-wall sleeve with the frustum, and the thin-wall sleeve with the frustum is required to deform during working, so that the anti-loosening effect of the nut is directly affected by the change of the axial distance between the nut and the deformable thin-wall sleeve with the frustum. GB 122272a also discloses a locknut having an upper body structure and a lower body structure, wherein the locknut is combined and locked by utilizing an eccentric boss at the lower end of the upper body, an eccentric hole at the upper end of the lower body, a cone-shaped deformation boss at the end part of the eccentric hole, and a root groove of the eccentric boss at the lower end of the upper body. Because the friction coefficients of the upper body and the lower body of the nut are influenced by the material limitation and the unreasonable axial structural design of the upper body and the lower body of the nut, the influence of uncertain initial gaps and the like is caused, the self-locking moment of the upper body of the nut cannot be automatically compensated by the loosening moment of the lower body of the nut, and meanwhile, certain difficulty is caused to the integral processing of the internal thread of the nut.
The inventor designs a self-locking nut with the bulletin number of CN2818887Y and an eccentric self-locking nut with the publication number of CN103277392A, and basically solves the problems of slow and insufficient strength and the like of the prior nut locking. On the basis, an eccentric self-locking nut with a publication number of CN1987133A is designed. The main technical content recorded by the method is as follows: and assembling a self-locking ring above the nut body, maintaining the relation between the axial distance and the thread lead, and utilizing the loosening torque of the nut to implement automatic tightening. Meanwhile, technical measures such as 'a damping sleeve ring made of non-metal materials or metal materials is arranged between the end part of the frustum with the frustum thin-wall sleeve and the eccentric hole of the upper body of the nut', and the like are also provided, so that the anti-loosening effect is improved. However, in practical application, the damping ring is influenced by the installation position, the connecting structure and the like, and when bearing axial pressure, the deformation direction is uncertain, so that the transmission of axial and radial vibration of the upper body, the lower body and the nut cannot be effectively prevented and absorbed. Especially when the nut is repeatedly used, the initial friction force of the upper body connection and the lower body connection cannot be guaranteed to be unchanged, and the nut repeated use efficiency is reduced.
Disclosure of Invention
The invention aims to provide a double anti-loosening vibration-absorbing self-locking nut, which effectively solves the problems that the nut of the existing bolt component cannot meet the anti-loosening requirement, reduces the repeated use rate of the nut and the like, has a simple structure and reasonable design, remarkably enhances the anti-loosening effect, is easy to process and convenient to assemble and disassemble, improves the repeated use rate of the nut, and meets the strict requirement of high-speed running equipment on preventing threaded connection loosening.
The technical scheme adopted by the invention is as follows: the double anti-loosening vibration-absorbing self-locking nut comprises a lower body, wherein an eccentric boss is arranged on the upper part of the lower body, an eccentric hole is arranged on the lower part of the lower body, the internal threads of the upper body and the lower body are identical to the external threads of a matched connecting bolt, and the technical key points are that: the friction vibration absorbing pad made of nonmetallic materials is arranged between the upper end face of the lower body eccentric boss and the inner cavity of the upper body eccentric hole, the upper end face, which is contacted with the lower body eccentric boss, of the bottom face of the friction vibration absorbing pad adopts mutually matched conical surfaces, when the upper body axially compresses the friction vibration absorbing pad relative to the lower body rotating angle alpha, the deformation direction of the friction vibration absorbing pad always points to the contacted connecting bolt surface, a friction vibration absorbing ring made of nonmetallic materials is arranged between the outer periphery of the lower body eccentric boss and the annular groove of the inner periphery of the upper body eccentric hole, an upper inner thread provided with an upper concentric mark and a lower inner thread provided with a lower concentric mark are arranged, the upper inner thread and the lower inner thread are on the same axis in the initial state, and the upper concentric mark and the lower concentric mark are coincident.
The friction vibration absorbing pad is made of a nonmetallic material with a large friction coefficient and good vibration absorbing effect, and the inner diameter of the annular frustum body is the same as the outer diameter of the connecting bolt.
The invention has the advantages and positive effects that: because the friction vibration absorbing pad made of nonmetallic materials is arranged between the upper end face of the lower body eccentric boss and the inner cavity of the upper body eccentric hole of the double anti-loose vibration absorbing type self-locking nut (hereinafter referred to as vibration absorbing nut for short), the upper end face of the friction vibration absorbing pad, which is contacted with the lower body eccentric boss, adopts the conical surface which is mutually matched, and the friction vibration absorbing ring made of nonmetallic materials is arranged between the periphery of the lower body eccentric boss and the annular groove of the inner periphery of the upper body eccentric hole, the double anti-loose vibration absorbing type self-locking nut has the advantages of simple structure, reasonable design, obvious enhancement of anti-loose effect, easiness in processing, convenience in dismounting, improvement of the nut reuse rate and satisfaction of the strict requirement of high-speed running equipment for preventing screw connection loosening. The reason for this is that: the shock absorption nut adopts the unique structure, and in the initial state, the upper internal threaded hole and the lower internal threaded hole are concentric; when the anti-loosening is implemented, the rotation angle alpha of the upper body relative to the lower body causes the eccentric of the threaded inner hole of the upper body relative to the threaded inner hole of the lower body, the friction vibration absorbing pad is axially compressed to generate elastic deformation, and the radial pressure on the connecting bolt is increased because the deformation direction of the friction vibration absorbing pad always points to the surface of the connecting bolt which is contacted, so that the anti-loosening effect of the vibration absorbing nut is improved, the transmission of the upper body and the lower body along the axial vibration is blocked, and the axial high-frequency vibration acting on the upper body and the lower body is effectively absorbed; meanwhile, under the action of the eccentric distance a, the friction vibration absorbing ring is locally pressed along the eccentric direction to generate elastic deformation, so that the friction force of the vibration absorbing nut is increased, the friction vibration absorbing ring also blocks the transmission of the upper body and the lower body along the radial vibration, and the vibration absorbing nut generates double friction force on the connecting bolt, so that the vibration absorbing nut is effectively prevented from loosening. The vibration absorbing nut effectively absorbs radial high-frequency vibration acting on the upper body and the lower body, ensures that no matter how the vibration frequency changes between the upper body and the lower body after the vibration absorbing nut is loosened, does not generate relative looseness, ensures that the initial anti-loosening friction force of the vibration absorbing nut is unchanged, and can further improve the anti-loosening effect. The other function of the friction vibration absorbing ring is to ensure that the connecting friction force of the upper body and the lower body is unchanged when the vibration absorbing nut is repeatedly used. Therefore, the invention effectively solves the problems that the nuts of the existing bolt assembly can not meet the anti-loosening requirement, the repeated use rate of the nuts is reduced, and the like.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a construction of the present invention;
Fig. 2 is a schematic structural view of the upper body of fig. 1:
FIG. 3 is a schematic view of a structure of the friction vibration absorbing ring of FIG. 1:
FIG. 4 is a schematic view of a structure of the friction vibration absorbing pad of FIG. 1:
Fig. 5 is a schematic view of a structure of the lower body of fig. 1.
The serial numbers in the figures illustrate: the device comprises an upper body 1, an upper concentric mark 2, a lower concentric mark 3, a lower body 4, a friction vibration absorbing ring 5, a friction vibration absorbing pad 6, an eccentric hole 7, an annular groove 8, an eccentric boss 9, an eccentric distance a and a rotation angle alpha.
Detailed Description
The specific structure of the present invention will be described in detail with reference to fig. 1 to 5. The double anti-loosening vibration-absorbing self-locking nut comprises a lower body 4, wherein an eccentric boss 9 is arranged at the upper part of the lower body, an upper body 1 with an eccentric hole 7 is arranged at the lower part of the lower body, and parts such as a friction vibration-absorbing pad 6, a friction vibration-absorbing ring 5 and the like are arranged. The internal threads of the upper body 1 and the lower body 4 are identical to the external threads of a mating coupling bolt (not shown). Wherein the friction vibration absorbing pad 6 is made of nonmetallic materials with large friction coefficient and good vibration absorbing effect, and the inner diameter of the annular frustum body is the same as the outer diameter of the connecting bolt. A friction vibration absorbing pad 6 made of nonmetallic materials is arranged between the upper end face of the eccentric boss 9 of the lower body 4 and the inner cavity of the eccentric hole 7 of the upper body 1, and the bottom face of the friction vibration absorbing pad 6 is contacted with the upper end face of the eccentric boss 9 of the lower body 4 by adopting conical surfaces which are mutually matched. When the friction vibration absorbing pad 6 is pressed axially by the rotation angle alpha of the upper body 1 relative to the lower body 4, the deformation direction of the friction vibration absorbing pad 6 always points to the contacted coupling bolt surface. In order to fully absorb radial vibration, a friction vibration absorbing ring 5 made of non-metallic material is arranged between the outer periphery of an eccentric boss 9 of the lower body 4 and an annular groove 8 of the inner periphery of an eccentric hole 7 of the upper body 1. The internal thread of the upper body 1 provided with the upper concentric mark 2 and the internal thread of the lower body 4 provided with the lower concentric mark 3 are on the same axis as the external thread of the coupling bolt in the initial state, and the upper and lower concentric marks 2, 3 are overlapped (as shown in fig. 1).
When the shock absorption nut is practically applied, the main functions of the connection and fixation of the structure are as follows: firstly, a certain initial friction force is generated to ensure that the upper body 1 and the lower body 4 in the initial state do not relatively move before use, thereby being convenient to use; and secondly, the transmission of radial vibration energy is prevented and absorbed. The axial friction vibration absorbing pad 6 is arranged between the upper end surface of the eccentric boss 9 of the lower body 4 and the inner cavity of the eccentric hole 7 of the upper body 1, and is guaranteed to be completely closely attached, and in order to achieve the function that the vibration absorbing nut is tightly held by the connecting screw under the action of axial force, the axial friction vibration absorbing pad 6 and the upper end surface of the eccentric boss 9 of the lower body 4 are arranged into an annular frustum body. As such, the primary effect of the axial friction shock pad 6 is two: when the vibration absorption nut is locked and loosened, the deformation direction of the axial friction vibration absorption pad 6 points to the center of the vibration absorption nut under the action of axial force and an annular frustum body, and the connecting screw is held tightly, so that the loosening prevention effect of the vibration absorption nut is improved; and secondly, the transmission of axial vibration energy is prevented and absorbed.
The radial friction vibration absorbing ring 5 is concentric with the eccentric hole 7 of the upper body 1, is in interference fit with the outer diameter of the eccentric boss 9 of the lower body 4, the axial friction vibration absorbing pad 6 is closely attached to the eccentric hole 7 of the upper body 1, and the inner threaded hole of the axial friction vibration absorbing pad is concentric with the inner threaded holes of the upper body and the lower body of the nut, and has the same size.
In the initial state, the upper body 1, the lower body 4 and the inner threaded holes of the axial friction vibration absorbing pad 6 of the vibration absorbing nut are concentric and have the same size, and at the moment, the vibration absorbing nut is identical to a common nut, and can be easily screwed into a connecting bolt with the same size and specification by hands to implement threaded connection operation. When the vibration absorbing nut is required to be loosened, the upper body 1of the vibration absorbing nut is rotated by an angle alpha along the direction of tightening the nut relative to the lower body 4. At this time, the shock absorbing nut will undergo the following changes: the upper body and the lower body are axially close, and the external clearance is reduced; the two upper and lower internal screw holes are eccentric, so that radial pressure is generated on the connecting screw rod, and the friction force between the upper and lower internal screw threads and the connecting screw rod is increased; the triaxial friction vibration absorbing pad 6 is compressed, and the connecting screw is held tightly under the action of the annular frustum body, so that the friction force is increased; fourth, under the eccentric force, the eccentric hole 7 of the upper body 1 and the eccentric boss 9 of the lower body 4 are eccentric, and the radial friction vibration absorbing ring 5 is compressed along the eccentric direction, so that the friction force between the eccentric hole 7 of the upper body 1 and the eccentric boss 9 of the lower body 4 is increased.
In order to scientifically analyze the vibration absorption nut and implement the anti-loosening principle, the friction force between the lower body 4 and the connecting screw is F1, the friction force between the upper body 1 and the connecting screw is F2, and the friction force between the upper body eccentric hole 7 and the lower body eccentric boss 9 is F3, so that the relation of 'F1 > F2> F3' exists. Therefore, when the lower body 4 loosens, the upper body cannot be driven to loosen together through the F3, so that the lower body 4 rotates by an angle along the direction of loosening the nut relative to the upper body 1, namely, the lower body 1 rotates by an angle along the direction of tightening the nut relative to the lower body 4, and the anti-loosening locking moment of the shock-absorbing nut is increased.
The shock absorption nut is improved on the basis of the structure of an eccentric self-locking nut (CN 103277392B), and the important difference of the two is that: (1) The vibration absorbing nut utilizes an axial friction vibration absorbing pad 6 arranged between the upper end surface of an eccentric boss 9 of the lower body 4 and the lower end surface of an eccentric hole 7 of the upper body 1 to absorb and isolate the vibration of the upper body and the lower body of the vibration absorbing nut from being transmitted along the axial direction, and when the vibration absorbing nut is used for preventing looseness, the axial friction vibration absorbing pad 6 is utilized to tightly hold the connecting screw rod under the action of directional deformation, so that the looseness resistance of the vibration absorbing nut is improved; (2) The vibration absorbing nut is provided with a radial friction vibration absorbing ring 5 at the lower end of the eccentric hole 7 of the upper body 1, so that the connecting friction force of the upper body and the lower body of the vibration absorbing nut is increased, and meanwhile, the vibration from the upper body and the lower body of the vibration absorbing nut is absorbed and isolated to be transmitted along the radial direction.
In order to clearly mark the installation direction of the vibration absorbing nut, an arrow or a triangle is stamped on the parallel surfaces corresponding to the upper concentric marks 2 and the lower concentric marks 3,2, 3, and the upper concentric marks 2 and the lower concentric marks 3 stamped with the arrow or the triangle are aligned in a superposition way, and the vibration absorbing nut can be used as a common nut after being concentric.
Under the action of the eccentricity a and the rotation angle alpha, the following four changes occur in the inner part of the shock absorption nut: 1. under the action of the eccentric distance a, the radial acting force of the internal threads of the upper body 1 and the lower body 4 on the connecting bolt along the eccentric direction is improved, and the friction force of the joint part of the shock absorption nut and the connecting bolt is increased; 2. under the action of the eccentric distance a, the acting force of the eccentric boss 9 and the eccentric hole 7 along the eccentric direction is increased, so that the friction force at the joint of the upper body 1 and the lower body 4 of the shock absorption nut is increased; 3. under the action of the rotation angle alpha, the upper body 1 moves relatively to the lower body 4 along the axial direction, so that the axial pressure of the friction vibration absorption pad 6 is increased, under the action of the conical surface of the eccentric boss 9, the friction vibration absorption pad 6 deforms elastically in an oriented manner, the radial pressure on the threaded surface of the connecting bolt is increased, and the anti-loosening effect of the vibration absorption nut is improved; 4. under the action of the eccentric distance a, the eccentric boss 9 moves slightly along the eccentric direction relative to the eccentric hole 7, so that the friction vibration absorbing ring 5 locally deforms elastically along the eccentric direction, and the friction force at the joint of the upper body 1 and the lower body 4 of the vibration absorbing nut is increased.
Because the friction vibration absorbing pad 6 and the friction vibration absorbing ring 5 are made of materials with good vibration absorbing effect, the upper body 1 and the lower body 4 can not transmit vibration along the axial direction and the radial direction, and the anti-loosening effect of the vibration absorbing nut is ensured.
For easy dismounting, the vibration absorbing nut is prevented from being installed reversely, so that the upper concentric mark 2 and the lower concentric mark 3 which are corresponding to each other are arranged on the peripheral surface of the lower body 4 of the upper body 1. When the vibration absorbing nut is required to be disassembled, the upper body 1 is rotated back to the initial position relative to the lower body 4 along the direction of loosening the vibration absorbing nut, so that the upper concentric marks 2 and the lower concentric marks 3 on the peripheral surfaces of the upper body 1 and the lower body 4 are aligned, the concentricity of threaded holes in the upper body 1 and the lower body 4 is ensured, and the radial pressure and the friction force of the vibration absorbing nut on the connecting bolt are eliminated.
Because the friction vibration absorbing ring 5 adopts interference fit with the eccentric boss 9 and the annular groove 8 on the inner surface of the eccentric hole 7 during initial installation, the upper body 1 and the lower body 4 are ensured to have enough connecting friction force meeting the self-locking requirement of the vibration absorbing nut, and meanwhile, the connecting friction force of the upper body 1 and the lower body 4 is also ensured to be unchanged during repeated use of the vibration absorbing nut.
Claims (1)
1. The utility model provides a double locking vibration absorbing type self-locking nut, includes that upper portion is provided with the lower body of eccentric boss, and the lower part is provided with the upper body of eccentric hole, and the internal thread of upper and lower body is the same with the external screw thread of cooperation coupling bolt, its characterized in that: a friction vibration absorption pad made of a nonmetallic material is arranged between the upper end face of the lower body eccentric boss and the inner cavity of the upper body eccentric hole, the bottom face of the friction vibration absorption pad and the upper end face of the lower body eccentric boss are mutually matched conical surfaces, when the upper body axially compresses the friction vibration absorption pad relative to the lower body rotating angle alpha, the deformation direction of the friction vibration absorption pad always points to the surface of a contacted connecting bolt, a friction vibration absorption ring made of a nonmetallic material is arranged between the periphery of the lower body eccentric boss and the annular groove at the inner periphery of the upper body eccentric hole, an upper internal thread provided with an upper concentric mark and a lower internal thread provided with a lower concentric mark are arranged, the upper body and the lower body are positioned on the same axis with the external thread of the connecting bolt in an initial state, and the upper concentric mark and the lower concentric mark are overlapped; the friction vibration absorbing pad is made of a nonmetallic material with a large friction coefficient and good vibration absorbing effect, and the inner diameter of the annular frustum body is the same as the outer diameter of the connecting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811264969.4A CN109083917B (en) | 2018-10-29 | 2018-10-29 | Double anti-loose vibration-absorbing self-locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811264969.4A CN109083917B (en) | 2018-10-29 | 2018-10-29 | Double anti-loose vibration-absorbing self-locking nut |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109083917A CN109083917A (en) | 2018-12-25 |
| CN109083917B true CN109083917B (en) | 2024-05-24 |
Family
ID=64844459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811264969.4A Active CN109083917B (en) | 2018-10-29 | 2018-10-29 | Double anti-loose vibration-absorbing self-locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109083917B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1011697A (en) * | 1964-07-06 | 1965-12-01 | Briles Franklin S | Nut and washer assembly |
| JPH10141349A (en) * | 1996-11-14 | 1998-05-26 | Haadorotsuku Kogyo Kk | Locking nut and manufacture thereof |
| US6786690B1 (en) * | 2002-06-19 | 2004-09-07 | Fusao Yamada | Locking fastener |
| CN2654930Y (en) * | 2003-11-20 | 2004-11-10 | 云南省机械研究设计院 | Wire retainer ring clamping head locking nut assembly |
| CN1844684A (en) * | 2006-05-08 | 2006-10-11 | 张连墩 | Shockproof locknut capable of positioning and automatically enhancing self-locking strength when securing |
| CN102691842A (en) * | 2012-06-19 | 2012-09-26 | 柳州博泽科技有限公司 | Pipeline quick connection device |
| CN102889439A (en) * | 2011-07-21 | 2013-01-23 | 贵州工信机电科技有限公司 | Hydraulic pipe joint sleeve |
| CN203532477U (en) * | 2013-10-12 | 2014-04-09 | 黄龙梅 | Eccentric type self-locking locknut |
| CN208935135U (en) * | 2018-10-29 | 2019-06-04 | 魏民 | Dual locking absorbing type self-locking nut |
-
2018
- 2018-10-29 CN CN201811264969.4A patent/CN109083917B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1011697A (en) * | 1964-07-06 | 1965-12-01 | Briles Franklin S | Nut and washer assembly |
| JPH10141349A (en) * | 1996-11-14 | 1998-05-26 | Haadorotsuku Kogyo Kk | Locking nut and manufacture thereof |
| US6786690B1 (en) * | 2002-06-19 | 2004-09-07 | Fusao Yamada | Locking fastener |
| CN2654930Y (en) * | 2003-11-20 | 2004-11-10 | 云南省机械研究设计院 | Wire retainer ring clamping head locking nut assembly |
| CN1844684A (en) * | 2006-05-08 | 2006-10-11 | 张连墩 | Shockproof locknut capable of positioning and automatically enhancing self-locking strength when securing |
| CN102889439A (en) * | 2011-07-21 | 2013-01-23 | 贵州工信机电科技有限公司 | Hydraulic pipe joint sleeve |
| CN102691842A (en) * | 2012-06-19 | 2012-09-26 | 柳州博泽科技有限公司 | Pipeline quick connection device |
| CN203532477U (en) * | 2013-10-12 | 2014-04-09 | 黄龙梅 | Eccentric type self-locking locknut |
| CN208935135U (en) * | 2018-10-29 | 2019-06-04 | 魏民 | Dual locking absorbing type self-locking nut |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109083917A (en) | 2018-12-25 |
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