CN214888282U - Double-nut anti-loose bolt - Google Patents
Double-nut anti-loose bolt Download PDFInfo
- Publication number
- CN214888282U CN214888282U CN202121324491.7U CN202121324491U CN214888282U CN 214888282 U CN214888282 U CN 214888282U CN 202121324491 U CN202121324491 U CN 202121324491U CN 214888282 U CN214888282 U CN 214888282U
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- nut
- fastening nut
- conical sleeve
- sleeve
- conical
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- 238000001125 extrusion Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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Abstract
The utility model discloses a two nut check bolts, including the screw and with screw threaded connection's fastening nut and lock nut, be provided with on fastening nut's terminal surface and be connected the taper sleeve as an organic whole with fastening nut, and the internal thread on the fastening nut extends to the oral area of taper sleeve, and the equipartition has the expansion joint on the taper sleeve, seted up on lock nut with taper sleeve external cone surface complex inner cone hole. The utility model discloses be provided with on fastening nut's terminal surface and be connected conical sleeve as an organic whole with fastening nut to through interior taper hole extrusion and the conical sleeve on the lock nut, make tightly parcel on screw rod portion after the conical sleeve shrink, eliminated the thread clearance between conical sleeve and the screw rod portion, thereby reach locking purpose.
Description
Technical Field
The utility model relates to a two nut check bolts belongs to fastener technical field.
Background
The bolt is a fastener indispensable to mechanical equipment, and one of the advantages of bolted connection is that the bolt is detachable and easy to maintain compared with other connections, but the bolt is also a weakness thereof, and particularly in large-scale mechanical equipment such as trains, automobiles, airplanes and tanks which run at high speed and vibrate intensively, vicious incidents of overturning and death of people due to loosening and loosening of threaded connection, fatigue fracture and the like are numerous. Therefore, bolt looseness prevention is a serious problem of industrial manufacturing and industrial products and even a fatal hidden danger all the time, and the untimely safety accidents already cause unpredictable harm to daily life, work, even transportation, national defense and military production. With the development of machinery to high speed and precision, the development of industrial scale to large scale and automation, the development of aerospace technology and the like, the bolt anti-loosening problem becomes more and more prominent.
At present, double-nut anti-loosening is widely applied technology, but in some more important or strong vibration occasions, the common double-nut still cannot achieve satisfactory anti-loosening effect. In the prior art, various improved double nuts technologies, such as double nuts with eccentric sleeves and double nuts with reverse threads, increase the anti-loosening effect, but still cannot prevent the relative rotation between the double nuts, and have the defects of complex structure, difficult processing, higher precision requirement on matched screws and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a simple structure, convenient to use, with low costs, locking effectual two nut locking bolts to overcome not enough among the prior art.
The utility model discloses a constitute like this: the utility model provides a two nut check bolt, includes the screw and with screw threaded connection's fastening nut and lock nut, be provided with on fastening nut's terminal surface and be connected the toper cover as an organic whole with fastening nut, and the internal thread on the fastening nut extends to the oral area of toper cover, and the equipartition has the expansion joint on the toper cover, offers on lock nut with toper cover external cone surface complex interior taper hole.
Further, the root of the outer wall of the conical sleeve is provided with a circle of arc-shaped groove.
Further, the depth of the inner taper hole is larger than the height of the taper sleeve.
Further, the length of the expansion joint is smaller than the height of the conical sleeve.
Furthermore, the contact surfaces of the fastening nut and the locknut are provided with anti-skid threads.
Further, the outer edge of the opening of the conical sleeve is provided with a chamfer.
Since the technical scheme is used, the utility model has the advantages of: the utility model discloses be provided with on fastening nut's terminal surface and be connected conical sleeve as an organic whole with fastening nut to through interior taper hole extrusion and the conical sleeve on the lock nut, make tightly parcel on screw rod portion after the conical sleeve shrink, eliminated the thread clearance between conical sleeve and the screw rod portion, thereby reach locking purpose.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the fastening nut and the locknut.
Description of reference numerals: 1-screw, 2-fastening nut, 3-locknut, 4-taper sleeve, 5-expansion joint, 6-arc groove, 7-inner taper hole and 8-chamfer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail with reference to the accompanying drawings and examples.
The embodiment of the utility model provides a: as shown in fig. 1-2, the utility model discloses a double nut check bolt, including screw 1 and 1 with screw 1 threaded connection's fastening nut 2 and locknut 3, be provided with on fastening nut 2's terminal surface and be connected conical sleeve 4 as an organic whole with fastening nut 2, and the internal thread on the fastening nut 2 extends to the oral area of conical sleeve 4, and the equipartition has expansion joint 5 on conical sleeve 4, set up on locknut 3 with conical sleeve 4 external cone complex interior taper hole 7. The root of the outer wall of the conical sleeve 4 is provided with a circle of arc-shaped grooves 6, so that stress concentration at the root of the outer wall of the conical sleeve 4 is eliminated, and the outer wall of the conical sleeve 4 is convenient to process.
The depth of the inner taper hole 7 is larger than the height of the taper sleeve 4, so that the inner taper hole 7 can be completely sleeved on the taper sleeve 4. The length of the expansion joint 5 is less than the height of the conical sleeve 4. The contact surfaces of the fastening nut 2 and the locknut 3 are provided with anti-slip threads, the fastening nut 2 and the locknut 3 are mutually restrained through the anti-slip threads, and the anti-loose effect is further improved. The outer edge of the mouth of the conical sleeve 4 is provided with a chamfer 8, so that the mouth of the conical sleeve 4 is prevented from scratching the inner conical hole 7, and a guiding effect is achieved.
During the use, at first with fastening nut 2 twist in the pole portion of screw 1 and screw up, then twist in the pole portion of screw 1 with locknut 3, make interior taper hole 7 on locknut 3 embolia taper sleeve 4 on fastening nut 2 completely, until the terminal surface of fastening nut 2 and locknut 3 pastes closely each other, alright extrude and taper sleeve 4 through interior taper hole 7 on locknut 3 like this, make taper sleeve 4 shrink after tightly wrap up on screw 1 pole portion, eliminated the thread clearance between taper sleeve 4 and screw 1 pole portion, thereby reach locking purpose.
Claims (6)
1. The utility model provides a double nut lockbolt, includes screw (1) and with screw (1) threaded connection's fastening nut (2) and locknut (3), its characterized in that: the end face of the fastening nut (2) is provided with a conical sleeve (4) which is connected with the fastening nut (2) into a whole, the internal thread on the fastening nut (2) extends to the opening of the conical sleeve (4), expansion joints (5) are uniformly distributed on the conical sleeve (4), and the anti-loosening nut (3) is provided with an inner conical hole (7) which is matched with the outer conical surface of the conical sleeve (4).
2. A double nut lock bolt according to claim 1, wherein: the root of the outer wall of the conical sleeve (4) is provided with a circle of arc-shaped groove (6).
3. A double nut lock bolt according to claim 1, wherein: the depth of the inner taper hole (7) is larger than the height of the taper sleeve (4).
4. A double nut lock bolt according to claim 1, wherein: the length of the expansion joint (5) is less than the height of the conical sleeve (4).
5. A double nut lock bolt according to claim 1, wherein: and anti-skid threads are arranged on the contact surfaces of the fastening nut (2) and the anti-loose nut (3).
6. A double nut lock bolt according to claim 1, wherein: the outer edge of the opening of the conical sleeve (4) is provided with a chamfer (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121324491.7U CN214888282U (en) | 2021-06-15 | 2021-06-15 | Double-nut anti-loose bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121324491.7U CN214888282U (en) | 2021-06-15 | 2021-06-15 | Double-nut anti-loose bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214888282U true CN214888282U (en) | 2021-11-26 |
Family
ID=78899685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121324491.7U Active CN214888282U (en) | 2021-06-15 | 2021-06-15 | Double-nut anti-loose bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214888282U (en) |
-
2021
- 2021-06-15 CN CN202121324491.7U patent/CN214888282U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240125 Address after: No. 27 Zhuoju Road, East Industrial Zone, Dongmingyang Village, Linmingguan Town, Yongnian District, Handan City, Hebei Province, 057150 Patentee after: Handan Zhong'ancheng Fastener Manufacturing Co.,Ltd. Country or region after: China Address before: 550002 No. 7, unit 1, No. 7, Qingnian Road, Nanming District, Guiyang City, Guizhou Province Patentee before: Ran Li Country or region before: China |
|
| TR01 | Transfer of patent right |