CN209604405U - A kind of self-lock bolt - Google Patents
A kind of self-lock bolt Download PDFInfo
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- CN209604405U CN209604405U CN201920137379.9U CN201920137379U CN209604405U CN 209604405 U CN209604405 U CN 209604405U CN 201920137379 U CN201920137379 U CN 201920137379U CN 209604405 U CN209604405 U CN 209604405U
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- 238000009434 installation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000003754 machining Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 244000098674 Pinus cembroides Species 0.000 description 1
- 235000005013 Pinus cembroides Nutrition 0.000 description 1
- 235000008591 Pinus cembroides var edulis Nutrition 0.000 description 1
- 235000015593 Pinus monophylla Nutrition 0.000 description 1
- 235000015594 Pinus parryana Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Abstract
The utility model provides a kind of self-lock bolt, and the self-lock bolt includes pin nut, beam nut, fastening nut；The pin nut extends axially outwardly out a rotary table on one side, and the diameter of the rotary table is gradually reduced from one end to the one end far from the pin nut for abutting the pin nut, and the pin nut and rotary table are axially inside provided with the first screw thread；The lateral surface of the rotary table is provided with the second screw thread；The beam nut is axially inside provided with the second matching thread that limit is matched with second screw thread；The beam nut is provided with an inclination limiting stand perpendicular to axial on one side；The height in the axial direction of the inclination limiting stand is gradually increased from one end of inclination limiting stand to the other end along the circumferential of the beam nut；Can realize using the technical program makes bolt can be applied to regular screw threads, improves product practicability.
Description
Technical field
The utility model relates to mechanical and installing area, in particular to a kind of self-lock bolts.
Background technique
Since the screw thread of nut must be more slightly larger than screw flight, it is screwed into facilitating.So tightening shape in nut
Under state, provide opposite extruding force to nut by screw thread, but the inclination angle of screw thread and horizontal plane be it is outside, acutely shaking
Or under Vibration Condition, since the gap between the flexible deformation and nut thread and screw flight of steel makes nut and screw rod
Between generate and shake and friction, rotation counterclockwise is formed while under the connector thrust collective effect outside to nut, in nut
The torque turned, nut generate loosening, cause the pretightning force loss even nut loosening of nut to get rid of de-.Every year because preventing bolt looseness
It leads to a disaster and carries out various inspection and maintenances, occupy a large amount of manpower and financial resources.
It needs to widely apply check bolt in fields such as machining tool, high-speed rail, aerospaces, it was reported that the whole world is about
45% high-speed rail and aerospace field is in the Hard-lock check bolt using Japan's production, although anti-Songyuan City of the bolt
Reason is easily understood, but in addition to the said firm, and there has been no enterprises can successfully produce this kind of bolt, illustrates Hard-lock check bolt
Requirement to material and processing technology is extremely stringent, can not produce in batches on the market.There are also a kind of Tang Shi bolts on the market, lead to
The form for crossing right-handed nut and left-handed nut double nut reduces impact or Cyclic Loading using the frictional force between upper lower nut
The loosening of lower nut, the rotation counterclockwise when this method is loosened using right-hand bolt apply turning moment to left-handed nut, and are somebody's turn to do
Torque but makes left-handed nut be in tight condition, and the locking measures of nut are reached with this.But the problem of Tang Shi bolt maximum
Stress screw thread when being that screw flight must be two-way discontinuous, processing complexity, and working is greatly reduced, about general
The half or so of logical screw thread, is unable to give full play the tensile property of screw rod.
Utility model content
The purpose of this utility model is to provide a kind of self-lock bolts, and bolt is made to can be applied to regular screw threads, mention
High product practicability.
In order to solve the above-mentioned technical problem, the utility model provides a kind of self-lock bolt, including pin nut, beam spiral shell
Female, fastening nut；The pin nut extends axially outwardly out a rotary table on one side, and the diameter of the rotary table abuts the pin certainly
One end of nut is gradually reduced to far from one end of the pin nut, and the pin nut and rotary table are axially inside provided with the
One screw thread；The lateral surface of the rotary table is provided with the second screw thread；
The beam nut is axially inside provided with the second matching thread that limit is matched with second screw thread；Institute
It states beam nut and is provided with an inclination limiting stand on one side perpendicular to axial；The height of the inclination limiting stand in the axial direction is described in
The circumferential direction of beam nut is gradually increased from one end of inclination limiting stand to the other end；
The fastening nut is axially inside provided with third screw thread identical with the screw thread of first screw thread；It is described
Fastening nut is provided with limit cooperation platform perpendicular to axial on one side, is used for the inclination limiting stand along the fastening nut
Circumferential direction on mutually limit；
The pin nut, beam nut and fastening nut are sequentially coaxially arranged；The rotary table is inserted into the inside of the beam nut,
Second screw thread is mutually limited with the second matching thread；It is provided on screw rod and is matched with first screw thread and third screw thread
First matching thread of limit；The screw rod is inserted into the inside of the pin nut and fastening nut, first screw thread, third spiral shell
Line is mutually limited with the first matching thread.
In a preferred embodiment, the inclination limiting stand is relative to limit cooperation platform in a first direction with second
Limit when side is rotated up, loosen it can not voluntarily；It is circumferential when the pin nut is rotated in a second direction, relative to beam nut
Pretightning force is bigger, and the frictional force of the pin nut and screw rod is bigger.
In a preferred embodiment, the angle of the first screw thread and horizontal plane is greater than the folder of second screw thread and horizontal plane
Angle.In a preferred embodiment, limit cooperation platform is specially a limit annulus；The limit annulus includes occupying the limit
The detent portion of annulus a part and the lug boss for occupying described limit annulus another part；The height of the detent portion vertically
It is gradually increased from the one end abutted with the limit annulus to the other end abutted with the limit annulus.
In a preferred embodiment, the detent portion is circumferentially arranged multiple detents；The inclination limiting stand protrusion
One end on be provided at least one card head；The card head is inserted into the detent limit.
In a preferred embodiment, the front projection of the detent is specially isosceles right triangle；The card head
Front projection also be specially isosceles right triangle.
In a preferred embodiment, the detent portion and the lug boss occupy the half for limiting annulus respectively.
In a preferred embodiment, the rotary table is specifically divided into four parts, each part centered on axial direction
Between gap be greater than installation gap between the pin nut and screw rod.
Compared to the prior art, the technical solution of the utility model have it is following the utility model has the advantages that
The utility model provides a kind of self-lock bolt, is a kind of modified self-locking anti-loosing applied to regular screw threads
Bolt.
(1) it is acted on using the mechanical snap between the clamp piece of beam nut and the detent of fastening nut, tightens pin nut, and
This is equivalent to so that generating close squeezing action between the protruding pin and screw flight of pin nut by the fastening of taper thread
Interference contact is formed between the internal screw thread and screw flight of protruding pin, the frictional force for resisting nut loosening is provided.
The angle of (2) first screw threads and horizontal plane is greater than the angle of second screw thread and horizontal plane, and makes beam nut
When inversely tightening, the sliding of the second screw thread can thus to generate bigger rub between the first screw thread prior to the first screw thread
Wipe power.Meanwhile second the inclination angle of screw thread can also be used to the machining accuracy of adjusting nut, the constraint fastening of the utility model is big
The requirement to nut material and machining accuracy is reduced greatly.
(3) when beam nut counter-tightened, on the basis of above-mentioned pin nut compresses, the hoop at taper thread is further increased
Power increases the frictional force between pin nut and screw rod, realizes fastening, self locking effect.
(4) the mechanical snap effect between beam nut and fastening nut, so that once being twisted between fastening nut and beam nut
It is next just mutually to slide again, and the loosening torque generated when vibration passes to beam nut by mechanical snap
Afterwards, so that bigger ring beam force is generated at the second screw thread, so that the frictional force between the first screw thread is further increased, so that nut
Loosening can not be generated.Meanwhile the unilateral mechanical snap between beam nut and fastening nut, fastening nut pine when vibration
Dynamic when move back thread, halved tie nut generates eccentric squeezing action, it is made more to be not easy to loosen.
(5) when beam nut is inversely tightened, size and beam nut and fastening bolt of the beam nut to pin nut fastening force
Between eccentric jam power can be realized by adjusting the circumferential length of the semicircle detent on fastening nut；Such as by semi-circumference
It is changed to 3/4 circumference or more circumferential lengths, the circumference of detent distribution is longer, the eccentric extruding between beam nut and fastening nut
Power then can be relatively smaller, controls frictional force without the material properties of strict control nut and eccentricity etc. again, substantially reduces
The processing technology of nut.
(6) compared with domestic and international existing anti-loosening bolt, the anti-loosening measure force way of the utility model is clear, leads to
It crosses triple measures and increases the frictional force between the first screw thread to prevent from loosening, locking measures effect is good, and to material and processing essence
That spends is of less demanding, and cost can be controlled in lower section, is conducive to market-oriented mass production.
Detailed description of the invention
Fig. 1 is the front view of pin nut in the preferred embodiment in the utility model；
Fig. 2 is the bottom view of pin nut in the preferred embodiment in the utility model；
Fig. 3 is the front view of beam nut in the preferred embodiment in the utility model；
Fig. 4 is the bottom view of beam nut in the preferred embodiment in the utility model；
Fig. 5 is the front view of fastening nut in the preferred embodiment in the utility model；
Fig. 6 is the top view of fastening nut in the preferred embodiment in the utility model；
Fig. 7 is the positional diagram of pin nut, beam nut and fastening nut in the preferred embodiment in the utility model
(1)；
Fig. 8 is the positional diagram of pin nut, beam nut and fastening nut in the preferred embodiment in the utility model
(2)；
Fig. 9 is pin nut, beam nut, fastening nut and screw rod and fastening connection piece in the preferred embodiment in the utility model
Scheme of installation.
Specific embodiment
The utility model is described further below in conjunction with the drawings and specific embodiments.
A kind of self-lock bolt, referring to figs. 1 to 9, including pin nut 1, beam nut 2, fastening nut 3；The pin nut 1
Extend axially outwardly out a rotary table 11 on one side, the diameter of the rotary table 11 is from one end of the pin nut 1 is abutted to separate
One end of the pin nut 1 is gradually reduced, and the pin nut 1 and rotary table 11 are axially inside provided with the first screw thread 10；Institute
The lateral surface for stating rotary table 11 is provided with the second screw thread 12；
The beam nut 2 is axially inside provided with the second matching thread that limit is matched with second screw thread 12
23；The beam nut 2 is provided with an inclination limiting stand 21 perpendicular to axial on one side；The inclination limiting stand 21 is in the axial direction
Height being gradually increased from one end of inclination limiting stand 21 to the other end along the circumferential of the beam nut 2；
The fastening nut 3 is axially inside provided with third screw thread identical with the screw thread of first screw thread 10
33；The fastening nut 3 is provided with limit cooperation platform 31 perpendicular to axial on one side, is used for the inclination limiting stand 21 on edge
It is mutually limited in the circumferential direction of the fastening nut 3；
The pin nut 1, beam nut 2 and fastening nut 3 are sequentially coaxially arranged；The rotary table 11 is inserted into the beam nut 2
Inside, second screw thread 12 and the second matching thread mutually limit 23；Be provided on screw rod 5 with first screw thread 10 and
Third screw thread 33 matches the first matching thread of limit；The screw rod 5 is inserted into the inside of the pin nut 1 and fastening nut 3,
First screw thread 10, third screw thread 33 and the first matching thread mutually limit.The rotary table 11 is specifically by centered on axial direction
Four parts are divided into, the gap 13 between each part is greater than the installation gap between the pin nut 1 and screw rod 5.
Limit when the inclination limiting stand 21 rotates in the first direction and a second direction relative to limit cooperation platform；
Circumferential direction pretightning force is bigger when the pin nut 1 is rotated in a second direction, relative to beam nut 2, and the pin nut 1 rubs with screw rod 5
It is bigger to wipe power, forms self-locking state.
Specifically, the angle of the first screw thread 10 and horizontal plane, is denoted as the first angle α；Second screw thread 12 and level
The angle in face is denoted as the second angle theta；First angle α is greater than the second angle theta.So that beam nut 2 is when inversely tightening, the
The sliding of two screw threads can thus to generate bigger friction between pin nut 1 and screw rod 5 prior to pin nut 1 and screw rod 5
Power.Meanwhile second screw thread can also be used to the machining accuracy of adjusting nut, the constraint fastening of the utility model greatly reduces pair
The requirement of nut material and machining accuracy.
Limit cooperation platform is specially a limit annulus；The limit annulus includes the card for occupying described limit annulus a part
Position portion 32 and the lug boss 31 for occupying described limit annulus another part；The height of the lug boss 31 vertically is all the same；
The height of the detent portion 32 vertically is another from the one end abutted with the limit annulus to abutting with the limit annulus
One end gradually increases.The increased inclination angle of lug boss is preferably identical as the inclination angle of the second screw thread；If in order to increase limiting stand and second
Self-locking bite force between screw thread can be realized by changing the inclination angle of the lug boss.
Specifically, the detent portion 32 is circumferentially arranged multiple detents 321, and the front projection of the detent 321
Specially isosceles right triangle；At least one card head 22, and institute are provided on one end of 21 protrusion of inclination limiting stand
Stating the front projection of card head 22 is also specially isosceles right triangle, so that the inclination limiting stand 21 is relative to the limit
Cooperation platform can limit when rotating in the first direction and a second direction；In the present embodiment, the card head 22 is provided with two
It is a；The card head 22 is inserted into the detent 321 and limits.When beam nut 2 is inversely tightened, beam nut 2 fastens pin nut 1
Eccentric jam power between the size and beam nut 2 and fastening bolt of power can be by adjusting the semicircle detent on fastening nut 3
321 circumferential length is realized；For example semi-circumference is changed to 3/4 circumference or more circumference, the circumference that detent 321 is distributed is got over
Long, eccentric extruding force when identical rotational angle between beam nut 2 and fastening nut 3 then can be relatively smaller, without stringent again
Material properties and eccentricity of nut etc. is controlled to control frictional force, substantially reduces the processing technology of nut.In the present embodiment,
The detent portion 32 occupies the half of the limit annulus with the lug boss 31 respectively.
With reference to Fig. 9, two fastening connection pieces 4 are close-coupled at by the fastening nut 3 backwards to the one side of the beam nut 2
Together.
A kind of installation method of self-lock bolt, using above-mentioned self-lock bolt, first by the fastening nut 3
It is tightened with screw rod 5 by third screw thread 33 and the first matching thread, reaches pretightning force；Then simultaneously by pin nut 1 and beam nut 2
Installation；When the beam nut 2 is contacted with the fastening nut 3, the angle for adjusting the beam nut 2 makes the beam nut 2
Card head 22 and the detent 321 of the fastening nut 3 block main limit, then tighten pin nut 1 until fastening, at this time with reference to figure
7；Then counter-tightened beam nut 2 is stuck in the clamp of the beam nut 2 in the detent 321 positioned at middle part of fastening nut 3,
Fig. 8 is referred at this time, is installed.
The utility model is acted on using the mechanical snap between the clamp piece of beam nut 2 and the detent 321 of fastening nut 3,
Pin nut 1 is tightened, and passes through the fastening of the second screw thread, so that being generated between the protruding pin of pin nut 1 and the screw thread of screw rod 5 close
Squeezing action is equivalent between 5 screw thread of internal screw thread and screw rod of the protruding pin and forms Interference contact, provides and resists 3 pine of fastening nut
Dynamic frictional force.When beam 2 counter-tightened of nut, on the basis of above-mentioned pin nut 1 compresses, the ring at taper thread is further increased
Power is bound round, the frictional force between pin nut 1 and screw rod 5 is increased.Mechanical snap effect between beam nut 2 and fastening nut 3, so that
Between fastening nut 3 and beam nut 2 Yi Dan tightening once the loosening that can not mutually slide, and be generated when vibration again turn round
After square passes to beam nut 2 by mechanical snap, so that bigger extruding force is generated at taper thread, to further increase cone spiral shell
Frictional force between mother 1 and screw rod 5, so that fastening nut 3 can not generate loosening.Meanwhile between beam nut 2 and fastening nut 3
Unilateral mechanical snap, when the loosening of fastening nut 3 is moved back thread when vibration, halved tie nut 2 generates eccentric squeeze and makees
With making it more be not easy to loosen.
Compared with domestic and international existing anti-loosening bolt, the anti-loosening measure force way of the utility model is clear, passes through
Triple measures increase the frictional force between pin nut 1 and 5 screw thread of screw rod to prevent from loosening, and locking measures effect is good, and to material
Of less demanding with machining accuracy, cost can be controlled in lower section, is conducive to market-oriented mass production.
The preferable specific embodiment of the above, only the utility model, but the design concept of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, utilizes this design
The change that unsubstantiality is carried out to the utility model belongs to the behavior for invading scope of protection of the utility model.
Claims (8)
1. a kind of self-lock bolt, it is characterised in that including pin nut, beam nut, fastening nut；The one side of the pin nut
A rotary table is extended axially outwardly out, the diameter of the rotary table is from one end of the abutting pin nut to the separate pin nut
One end is gradually reduced, and the pin nut and rotary table are axially inside provided with the first screw thread；The lateral surface of the rotary table is arranged
There is the second screw thread；
The beam nut is axially inside provided with the second matching thread that limit is matched with second screw thread；The beam
Nut is provided with an inclination limiting stand perpendicular to axial on one side；The height in the axial direction of the inclination limiting stand is along the beam
The circumferential direction of nut is gradually increased from one end of inclination limiting stand to the other end；
The fastening nut is axially inside provided with third screw thread identical with the screw thread of first screw thread；The fastening
Nut is provided with limit cooperation platform perpendicular to axial on one side, for the inclination limiting stand in the week along the fastening nut
Mutually limit upwards；
The pin nut, beam nut and fastening nut are sequentially coaxially arranged；The rotary table is inserted into the inside of the beam nut, described
Second screw thread is mutually limited with the second matching thread；It is provided on screw rod and matches limit with first screw thread and third screw thread
The first matching thread；The screw rod is inserted into the inside of the pin nut and fastening nut, first screw thread, third screw thread with
First matching thread mutually limits.
2. a kind of self-lock bolt according to claim 1, which is characterized in that the inclination limiting stand is relative to described
Limit when limit cooperation platform rotates in the first direction and a second direction, loosen it can not voluntarily；The pin nut relative to
Circumferential direction pretightning force is bigger when beam nut is rotated in a second direction, and the frictional force of the pin nut and screw rod is bigger.
3. a kind of self-lock bolt according to claim 2, which is characterized in that the angle of the first screw thread and horizontal plane is big
In the angle of second screw thread and horizontal plane.
4. a kind of self-lock bolt according to claim 3, which is characterized in that limit cooperation platform is specially limit circle
Ring；The limit annulus includes occupying the detent portion of described limit annulus a part and occupying described limit annulus another part
Lug boss；The height of the detent portion vertically is extremely abutted with the limit annulus from the one end abutted with the limit annulus
The other end gradually increase.
5. a kind of self-lock bolt according to claim 4, which is characterized in that the detent portion is circumferentially arranged have it is more
A detent；At least one card head is provided on one end of the inclination limiting stand protrusion；The card head is caught in the detent
Limit.
6. a kind of self-lock bolt according to claim 5, which is characterized in that the front projection of the detent is specially
Isosceles right triangle；The front projection of the card head is also specially isosceles right triangle.
7. a kind of self-lock bolt according to claim 6, which is characterized in that the detent portion and the convex portion
The half of the limit annulus is not occupied.
8. a kind of self-lock bolt according to claim 7, which is characterized in that during the rotary table is specifically with axial direction
The heart is divided into four parts, and the gap between each part is greater than the installation gap between the pin nut and screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920137379.9U CN209604405U (en) | 2019-01-25 | 2019-01-25 | A kind of self-lock bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920137379.9U CN209604405U (en) | 2019-01-25 | 2019-01-25 | A kind of self-lock bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209604405U true CN209604405U (en) | 2019-11-08 |
Family
ID=68402141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920137379.9U Withdrawn - After Issue CN209604405U (en) | 2019-01-25 | 2019-01-25 | A kind of self-lock bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209604405U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595247A (en) * | 2019-01-25 | 2019-04-09 | 华侨大学 | A kind of self-lock bolt and its installation method |
| 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 |
-
2019
- 2019-01-25 CN CN201920137379.9U patent/CN209604405U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595247A (en) * | 2019-01-25 | 2019-04-09 | 华侨大学 | A kind of self-lock bolt and its installation method |
| CN109595247B (en) * | 2019-01-25 | 2023-10-31 | 华侨大学 | Self-locking check bolt and installation method thereof |
| 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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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20191108 Effective date of abandoning: 20231031 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20191108 Effective date of abandoning: 20231031 |