CN210660971U - Anti-loosening locking bolt - Google Patents
Anti-loosening locking bolt Download PDFInfo
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- CN210660971U CN210660971U CN201921453502.4U CN201921453502U CN210660971U CN 210660971 U CN210660971 U CN 210660971U CN 201921453502 U CN201921453502 U CN 201921453502U CN 210660971 U CN210660971 U CN 210660971U
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- bolt
- nut
- locking
- oil plug
- conical
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Abstract
The utility model discloses a locking bolt relates to fastener technical field, has solved the problem that locking effect is unsuitable for harsh vibration environment of locking bolt among the prior art, and its technical essential is: the anti-loosening structure comprises a bolt and a nut, wherein the bolt and the nut are connected in a matched mode through threads, and one end of the nut is provided with the anti-loosening structure which enables the bolt to expand; the utility model discloses an increase the diameter of bolt in nut one end to increase the pressure between bolt and the nut, because be equipped with the taper thread in the bolt, and connect through taper thread oil plug spinning and make the bolt strengthen at the bolt radial dimension of nut mouth, exert axial resistance to the nut, thereby increased locking effect, for prior art, the utility model discloses locking effectual, and be applicable to the harsh environment of vibration.
Description
Technical Field
The utility model relates to a fastener technical field especially relates to a locking bolt.
Background
The bolted connection who uses now comprises bolt, nut, gasket, screws up behind the nut, and the elasticity that the packing ring produced after being pressed makes nut housing bolt, plays locking effect, and along with the lengthening of live time, whole bolt can produce the displacement and make fastening effect slowly worsen, especially the cooperation degree between terminal surface and the contact surface under the bolt head, thereby frictional force reduces and makes locking effect reduce when owing to cooperate between them, uses unreliable.
Chinese patent publication No. CN201636187U discloses a novel check bolt, which comprises a bolt head and a screw, and is characterized in that: the lower end surface of the bolt head is provided with convex teeth which are distributed circumferentially; the convex teeth are helical teeth; the helical teeth are inclined relative to the rear ends of the helical teeth in the screwing direction of the bolt; the helical teeth are uniformly distributed; according to the friction force calculation formula f = μ Fn, the lower end face of the bolt head is provided with the convex teeth, so that the surface roughness μ is increased, the friction force f is increased accordingly, the friction force between the bolt head and a matching surface is enhanced, and the fastening performance and the anti-loosening effect of the bolt are better. However, the bolt still has the problem of undesirable anti-loosening effect in a relatively severe vibration environment, and therefore, an anti-loosening locking bolt is provided.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above-mentioned defect, provide an anti-loosening locking bolt, including bolt and nut, bolt and nut pass through screw-thread fit and connect, and the bolt makes the expanded anti loosening structure of bolt in the one end of nut to solve the problem that the locking effect of anti-loosening bolt is unsuitable for harsh vibration environment among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an anti-loosening locking bolt, includes bolt and nut, and the bolt passes through screw-thread fit connection with the nut, and the bolt is equipped with the expanded anti-loosening structure of messenger's bolt in the one end of nut.
As a further scheme of the utility model, the anti-loosening structure comprises a conical threaded hole, the conical threaded hole is arranged at one end of the bolt with threads, the threads are arranged in the conical threaded hole, a conical thread oil plug is arranged in the conical threaded hole, and the conical thread oil plug is matched and connected with the conical threaded hole through the threads; the bolt is equipped with the cross open slot that is used for realizing the bolt inflation in the one end that is equipped with the toper screw hole.
As a further aspect of the utility model, the one end of awl screw thread oil plug is equipped with the oil plug hole of pretightening.
As a further proposal of the utility model, the oil plug pre-tightening hole is a hexagonal sinking platform.
As a further aspect of the present invention, a washer is further provided on the bolt.
To sum up, compared with the prior art, the utility model has the following beneficial effects:
the utility model discloses an increase the diameter of bolt in nut one end to increase the pressure between bolt and the nut, because be equipped with the taper thread in the bolt, and connect through taper thread oil plug spinning and make the bolt strengthen at the bolt radial dimension of nut mouth, exert axial resistance to the nut, thereby increased locking effect, for prior art, the utility model discloses locking effectual, and be applicable to the harsh environment of vibration.
Drawings
Fig. 1 is a schematic structural view of the connection of the anti-loose locking bolt and the connecting piece.
FIG. 2 is a top view of the anti-loose lock bolt.
Fig. 3 is a schematic structural view of a bolt in the anti-loose lock bolt.
Fig. 4 is a schematic structural view of a tapered thread oil plug in the anti-loose locking bolt.
Reference numerals: 1-bolt, 2-nut, 3-taper thread oil plug, 4-first connecting piece, 5-second connecting piece and 6-washer.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Example 1
As shown in fig. 1 to 2, the anti-loose locking bolt comprises a bolt 1 and a nut 2, wherein the bolt 1 and the nut 2 are connected in a thread fit manner, and an anti-loose structure for expanding the bolt 1 is arranged at one end of the nut 2 of the bolt 1;
as shown in fig. 3, the anti-loosening structure in this embodiment includes a tapered threaded hole, the tapered threaded hole is provided at one end of the bolt 1 with threads, the tapered threaded hole is provided with a tapered threaded oil plug 3, and the tapered threaded oil plug 3 is connected with the tapered threaded hole in a matching manner through the threads; when the conical thread oil plug 3 is fixed in the bolt 1 through threads, the conical surface on the conical thread oil plug 3 is matched with the conical surface in the bolt 1, and the bolt 1 is expanded, so that the diameter of the bolt 1 in the nut 2 is increased, the pressure between the bolt 1 and the nut 2 is increased, and the purpose of preventing looseness is achieved; one end of the bolt 1 provided with the conical threaded hole is provided with a cross-shaped open slot for realizing expansion of the bolt 1;
as shown in fig. 4, a thread is provided on the conical surface of the conical thread oil plug 3, and an oil plug pre-tightening hole is provided at one end of the conical thread oil plug 3, in this embodiment, the oil plug pre-tightening hole is a hexagonal counter sink for use with a hexagonal wrench;
during installation, the bolt 1 penetrates through the first connecting piece 4 and the second connecting piece 5, then the nut 2 is used for pre-tightening, the preset pre-tightening force is achieved, the conical thread oil plug 3 is screwed into the bolt 1, and then the conical thread oil plug 3 is pre-tightened.
Example 2
As shown in fig. 1 to 2, the anti-loose locking bolt comprises a bolt 1 and a nut 2, wherein the bolt 1 and the nut 2 are connected in a thread fit manner, and an anti-loose structure for expanding the bolt 1 is arranged at one end of the nut 2 of the bolt 1;
preferably, the bolt 1 is further sleeved with a gasket 6, and the gasket 6 is an open gasket in the prior art, so that the anti-loosening effect is further improved;
other structures in this embodiment are the same as those in embodiment 1.
To sum up, the utility model discloses a theory of operation is:
during installation, the bolt 1 penetrates through the first connecting piece 4 and the second connecting piece 5, then the nut 2 is used for pre-tightening to reach a preset pre-tightening force, the conical thread oil plug 3 is screwed into the bolt 1, and then the conical thread oil plug 3 is pre-tightened; when the conical thread oil plug 3 is fixed in the bolt 1 through threads, the conical surface on the conical thread oil plug 3 is matched with the conical surface in the bolt 1, and the conical surface in the bolt 1 is expanded, so that the diameter of the bolt 1 in the nut 2 is increased, the pressure between the bolt 1 and the nut 2 is increased, and the purpose of preventing looseness is achieved; because the conical surface is arranged in the bolt, the pressure of the bolt at the nut opening to the pressure of the bolt head is sequentially reduced, so that the axial force in the direction of the bolt head is applied to the bolt, and the anti-loosening effect is improved; the gasket 6 increases the pressure between the bolt 1 and the nut 2, so that the friction force between the bolt 1 and the nut 2 is increased, and further anti-loosening effect is achieved.
It should be noted that, the bolt-up principle is prior art's application in this application, thereby increases the diameter of bolt one end through water and plays locking effect and be the innovation point of this application, and it has effectively solved the problem that locking bolt locking effect is not suitable for the harsh vibration environment among the prior art.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and for the convenience of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A locking bolt comprises a bolt (1) and a nut (2), wherein the bolt (1) is in threaded fit connection with the nut (2), and the bolt (1) is provided with a locking structure at one end of the nut (2) for expanding the bolt (1), and is characterized in that the locking structure comprises a conical threaded hole which is formed in the end, provided with threads, of the bolt (1), a thread is arranged in the conical threaded hole, a conical thread oil plug (3) is arranged in the conical threaded hole, and the conical thread oil plug (3) is in fit connection with the conical threaded hole through the threads; one end of the bolt (1) provided with the conical threaded hole is provided with a cross-shaped open slot for realizing expansion of the bolt (1).
2. The anti-loose locking bolt according to claim 1, characterized in that one end of the tapered thread oil plug (3) is provided with an oil plug pre-tightening hole.
3. The anti-loose lock bolt according to claim 2, wherein the oil plug pre-tightening hole is a hexagonal countersunk platform.
4. A locking bolt according to any one of claims 1 to 3 characterised in that the bolt (1) is further provided with a washer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921453502.4U CN210660971U (en) | 2019-09-03 | 2019-09-03 | Anti-loosening locking bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921453502.4U CN210660971U (en) | 2019-09-03 | 2019-09-03 | Anti-loosening locking bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660971U true CN210660971U (en) | 2020-06-02 |
Family
ID=70839206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921453502.4U Active CN210660971U (en) | 2019-09-03 | 2019-09-03 | Anti-loosening locking bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931919A (en) * | 2021-09-30 | 2022-01-14 | 国网新疆电力有限公司奎屯供电公司 | Locking structure of anti-loosening bolt |
| CN114294312A (en) * | 2022-01-06 | 2022-04-08 | 四川精诚能源设备有限公司 | Anti-loosening super bolt |
-
2019
- 2019-09-03 CN CN201921453502.4U patent/CN210660971U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931919A (en) * | 2021-09-30 | 2022-01-14 | 国网新疆电力有限公司奎屯供电公司 | Locking structure of anti-loosening bolt |
| CN114294312A (en) * | 2022-01-06 | 2022-04-08 | 四川精诚能源设备有限公司 | Anti-loosening super bolt |
| CN114294312B (en) * | 2022-01-06 | 2024-07-12 | 四川精诚能源设备有限公司 | Anti-loose super bolt |
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