CN111981018A - Anti-loose shockproof fastener - Google Patents
Anti-loose shockproof fastener Download PDFInfo
- Publication number
- CN111981018A CN111981018A CN202011011466.3A CN202011011466A CN111981018A CN 111981018 A CN111981018 A CN 111981018A CN 202011011466 A CN202011011466 A CN 202011011466A CN 111981018 A CN111981018 A CN 111981018A
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- hole
- elastic boss
- elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
- F16B39/126—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts causing radial forces on the bolt-shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a locking shockproof fastener, which comprises a bolt, a convex nut and a concave nut; the convex nut comprises a nut main body and an elastic boss, and the inner walls of the nut main body and the elastic boss are provided with threads matched with the bolt screw section; a stepped hole is formed in the female nut, the small-diameter hole is a threaded hole matched with the bolt and screw section, and the large-diameter hole is a smooth hole matched with the outer diameter of the elastic boss; the convex nut and the concave nut are both in threaded connection with the screw section of the bolt, and the concave nut is wrapped outside the elastic boss through the large-diameter hole of the concave nut and locked. When the bolt is used, the convex nut is firstly screwed on the screw rod section of the bolt, a certain torque is applied to screw the convex nut in place, then the concave nut is additionally arranged to continuously apply a certain torque to screw the convex nut in place, and the elastic boss is coated on the large-diameter hole in the concave nut and locked. On the one hand, the preliminary fastening is realized through threaded connection, and on the other hand, through the matching of the large-diameter hole of the female nut and the elastic boss of the male nut, a wedge-shaped pin is implanted between the bolt and the nut, so that the anti-loosening and anti-vibration purposes are achieved.
Description
Technical Field
The invention belongs to the technical field of connecting fasteners, and particularly relates to a locking shockproof fastener.
Background
The overhead transmission line is thousands of kilometers long, and the electrical connection of wire ground wire in the centre must pass through the bolt, is indispensable. However, the transmission line has a severe operating environment, and environmental conditions in various regions have large differences, and electric connection points, such as structural connection bolts, are loosened under the action of wind, external force and the like, so that accidents such as line breakage, tower collapse, power supply interruption and the like are caused. The traditional method generally adopts anti-loosening and shockproof measures such as coating anti-loosening paint, adding spring gaskets and the like, and has certain effects, but accidents such as drainage heating and ground wire falling still occur due to the influence of factors such as human, environmental corrosion and the like.
Disclosure of Invention
The invention aims to provide a locking shockproof fastener with good connecting and fastening effects aiming at the defects of the prior art.
The invention provides a looseness-proof and shockproof fastener, which comprises a bolt, a convex nut and a concave nut; the convex nut comprises a nut main body and an elastic boss, and the inner walls of the nut main body and the elastic boss are provided with threads matched with the bolt screw section;
a stepped hole is formed in the female nut, the small-diameter hole is a threaded hole matched with the bolt and screw section, and the large-diameter hole is a smooth hole matched with the outer diameter of the elastic boss; the convex nut and the concave nut are both in threaded connection with the screw section of the bolt, and the concave nut is wrapped outside the elastic boss through the large-diameter hole of the concave nut and locked.
In a specific embodiment, the elastic boss is a conical table, a plurality of through grooves are uniformly distributed on the elastic boss body along the circumferential direction to divide the elastic boss body into a plurality of elastic wedges, and a circle of circular arc groove is arranged at the root of the elastic boss body.
In order to improve the connection reliability, a fastening reinforcing hole penetrating along the thickness direction is arranged at the intersection of the through groove and the arc groove.
In order to further improve the connection reliability, a square groove is arranged on the elastic wedge block, and an anti-loosening pin is embedded in the square groove.
Preferably, the large-diameter hole of the female nut is a tapered hole.
In order to improve the holding effect, the stepped hole in the female nut is an eccentric hole.
When the bolt is used, the male nut is screwed into the screw section of the bolt, a certain torque is applied to screw the male nut in place, then the female nut is mounted to continue to apply a certain torque to screw the male nut in place, and the elastic boss is coated on the large-diameter hole in the female nut and locked. On the one hand, the preliminary fastening is realized through threaded connection, and on the other hand, through the matching of the large-diameter hole of the female nut and the elastic boss of the male nut, a wedge-shaped pin is implanted between the bolt and the nut, so that the anti-loosening and anti-vibration purposes are achieved.
Drawings
FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the present invention.
Fig. 2 is an enlarged schematic axial view of the male nut in the preferred embodiment.
Fig. 3 is an enlarged cross-sectional view of the female nut in the preferred embodiment.
Sequence numbers of the drawings:
1-bolt;
2-the part of the convex nut,
21-the main body of the nut,
22-elastic boss, 221-through groove, 222-elastic wedge block, 223-anti-loosening pin, 224-arc groove and 225-fastening reinforcing hole;
3-female nut.
Detailed Description
As shown in fig. 1, the anti-loose and anti-vibration fastener disclosed in this embodiment is composed of three parts, namely, a bolt 1, a male nut 2 and a female nut 3, wherein the bolt 1 is a common half-thread hexagon bolt.
As shown in fig. 2, the male nut 2 includes a nut body 21 and an elastic boss 22, both of which are made of elastic steel. The nut body 21 is a hexagon nut matched with the bolt 1, and an inner threaded hole of the nut body is processed concentrically. The elastic boss 22 is a tapered platform with a small upper part and a large lower part, and the inner wall of the elastic boss is provided with a threaded hole matched with the bolt, and the threaded hole is processed concentrically. Four through grooves 221 which are arranged in a cross shape are formed in the table wall so that the elastic boss can be retracted inwards under the action of external force, the four through grooves 221 divide the elastic boss into four elastic wedges 222 which can elastically deform inwards, a square groove with the diameter of 1mm multiplied by 1mm is formed in any one of the elastic wedges 222, and anti-loosening pins 223 are embedded in the square groove so as to improve the holding effect. Elasticity boss 22 and major diameter end are connected on the nut main part to be equipped with circular arc groove 224 at the root of elasticity boss and further improve elastic deformation's ability, set up the tight enhancement hole 225 of deciding that runs through along the thickness direction in the intersection of circular arc groove and logical groove simultaneously, so that further improve locking effect after screwing up. In use, the male nut 2 is screwed on the screw section of the bolt, and then the female nut 3 is assembled.
As shown in fig. 3, the female nut 3 is in the shape of a regular hexagon prism, and is provided with an eccentric stepped hole in the axial direction, the eccentricity is 0.02 mm, the eccentric stepped hole includes a large-diameter hole and a small-diameter hole, the large-diameter hole is a tapered smooth hole matched with the elastic boss, and the small-diameter hole is a threaded hole matched with the bolt and screw section. During assembly, the female nut is screwed into the screw section of the bolt, the female nut is continuously rotated until the conical unthreaded hole of the female nut is sleeved outside the elastic boss, and torque is continuously applied to the male logic and the female nut to be screwed down.
After the assembly is finished, on one hand, due to the eccentric processing of the female nut, the male nut is processed in a normal central circular shape, namely a wedge-shaped pin is implanted between the bolt and the nut, and the purposes of looseness prevention and shock prevention are achieved. On the other hand, the convex nut is provided with a cross-shaped groove and is turned with an arc at the bottom of the boss to form elasticity, a certain holding force is applied to the elastic boss in the screwing-in process of the concave nut to enable the elastic boss to generate elastic deformation, the thread pitch and the modulus are reduced, the holding force of the convex nut and the screw is improved, meanwhile, a wedge of 1mm multiplied by 1mm added on the convex nut is embedded into the thread of the concave nut, the holding force of the convex nut and the concave nut is improved, and the purposes of looseness prevention and vibration prevention are achieved. After the assembly is finished, the fastening screw can be screwed into the fastening reinforcing hole 225 to further ensure the anti-loosening and anti-vibration effects. The method is suitable for the electrical connection of the transmission line ground wire in the middle and is also suitable for places needing tight connection in other industries. The bolt has low cost and strong popularization and application.
Claims (6)
1. A locking shockproof fastener is characterized in that: the bolt comprises a bolt, a convex nut and a concave nut;
the convex nut comprises a nut main body and an elastic boss, and the inner walls of the nut main body and the elastic boss are provided with threads matched with the bolt screw section;
a stepped hole is formed in the female nut, the small-diameter hole is a threaded hole matched with the bolt and screw section, and the large-diameter hole is a smooth hole matched with the outer diameter of the elastic boss;
the convex nut and the concave nut are both in threaded connection with the screw section of the bolt, and the concave nut is wrapped outside the elastic boss through the large-diameter hole of the concave nut and locked.
2. The anti-loosening anti-vibration fastener according to claim 1, wherein: the elastic boss is a conical table, a plurality of through grooves are uniformly distributed on the elastic boss body along the circumferential direction to divide the elastic boss body into a plurality of elastic wedge blocks, and a circle of arc groove is arranged at the root of the elastic boss body.
3. The anti-loosening anti-vibration fastener according to claim 2, wherein: and a fastening reinforcing hole penetrating along the thickness direction is arranged at the intersection of the through groove and the arc groove.
4. The anti-loosening anti-vibration fastener according to claim 2, wherein: the elastic wedge block is provided with a square groove, and an anti-loosening pin is embedded in the square groove.
5. The anti-loosening anti-vibration fastener according to claim 2, wherein: the large-diameter hole of the female nut is a tapered hole.
6. The anti-loosening anti-vibration fastener according to claim 1, wherein: the stepped hole in the female nut is an eccentric hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011011466.3A CN111981018A (en) | 2020-09-23 | 2020-09-23 | Anti-loose shockproof fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011011466.3A CN111981018A (en) | 2020-09-23 | 2020-09-23 | Anti-loose shockproof fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111981018A true CN111981018A (en) | 2020-11-24 |
Family
ID=73450138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011011466.3A Pending CN111981018A (en) | 2020-09-23 | 2020-09-23 | Anti-loose shockproof fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111981018A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215840A (en) * | 2022-01-11 | 2022-03-22 | 韦庆龙 | Never-loosening screw |
| CN115559981A (en) * | 2022-09-20 | 2023-01-03 | 中国铁建重工集团股份有限公司 | Locknut structure assembly |
-
2020
- 2020-09-23 CN CN202011011466.3A patent/CN111981018A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215840A (en) * | 2022-01-11 | 2022-03-22 | 韦庆龙 | Never-loosening screw |
| CN115559981A (en) * | 2022-09-20 | 2023-01-03 | 中国铁建重工集团股份有限公司 | Locknut structure assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |