CN205207390U - Device for preventing nut is not hard up - Google Patents
Device for preventing nut is not hard up Download PDFInfo
- Publication number
- CN205207390U CN205207390U CN201520987150.6U CN201520987150U CN205207390U CN 205207390 U CN205207390 U CN 205207390U CN 201520987150 U CN201520987150 U CN 201520987150U CN 205207390 U CN205207390 U CN 205207390U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- conical surface
- washer
- projection
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a device for preventing nut is not hard up, includes bolt, lock nut, takes the built -in screw thread breach packing ring of lug, mother nut, plain washer and connected the work piece, the bolt is hexagon head standard bolt, lock nut is purpose -built nut, its upper end is the screw hole and adopts threaded connection with the bolt, the lower extreme cooperates for the conical surface and the built -in screw thread breach packing ring epicone facial features of taking the lug, the built -in screw thread breach packing ring upper end of taking the lug is the conical surface, the conical surface of lower extreme for taking the lug, the mother nut is purpose -built nut, match for the conical surface of end band lug under the conical surface of trough of belt mouth and the built -in screw breach packing ring of taking the lug in its upper end, its lower extreme is the screw hole and adopts threaded connection with the bolt, plain washer and quilt are connected the work piece and are directly overlapped on the bolt, the utility model discloses simple structure, reasonable in design can prevent effectively that the nut is not hard up.
Description
Technical field
The utility model relates to nut field, is a kind of device preventing nut loosening specifically.
Background technique
Nut be there is internal thread and with bolt with the use of fastening piece, there is internal thread and move or the mechanical parts of power with the use of to transmit with bolt.It is existing that to prevent nut loosening mode from mainly containing following several:
1, rub locking.This mode is the most widely used locking mode of one, and this mode produces one between screw pair can stop screw pair frictional force in relative rotation.As adopted elastic washer, double nut etc., in these nut anti-looseness modes, being point cantact between worm tooth, easily loosening when shock and vibration and varying load, nut finally will be caused to get loose.
2, mechanical nut is locking.This mode directly limits relatively rotating of screw pair with retainer.As adopted cotter pin, series connection steel wire and lock washer etc.This mode causes dismounting inconvenient.
3, riveting is rushed locking.Methods such as adopting impact after tightening, weld, be bonding, makes screw pair lose kinetic characteristic and become non-dismountable connection.The shortcoming of this mode is that bolt shank can only use once, and dismounting difficulty very, must destroy screw pair can dismantle.
Summary of the invention
For the deficiency that prior art exists, the utility model provides a kind of design science, rational in infrastructure, the safe and reliable device preventing nut loosening.
The technical solution of the utility model is: a kind of device preventing nut loosening, comprise bolt, locking nut, band projection disposed thread C washer, mother nut, plain washer and be connected workpiece, it is characterized in that, concrete structure and Placement are:
Described bolt is hexagon head standard bolt, locking nut is special nut, the upper end of locking nut is tapped hole, the upper end of locking nut is connected with bolt by screw thread, lower end is that the conical surface matches with the conical surface on the disposed thread C washer of band projection, disposed thread C washer upper end with projection is the conical surface, lower end is the conical surface of band projection, mother nut is special nut, the upper end of mother nut is that under being with the conical surface of notch and being with the disposed thread C washer of projection, the conical surface of end band projection matches, the lower end of mother nut is tapped hole, the lower end of mother nut is connected with bolt by screw thread, plain washer and be connected workpiece and be directly enclosed within bolt.
On the band projection conical surface of the disposed thread C washer of described band projection, the lower plane of plane and mother nut notch is in a plane, and have certain gap with mother nut conical surface lower plane, this gap is that worm tooth moves down when closely cooperating with the worm tooth of bolt certain mobile space in order to when being with the disposed thread C washer of projection to tighten up; With the disposed thread C washer that the projection on the disposed thread C washer of projection is in order to fixing belt projection, prevent from jumping, so that better and mother nut trough of belt mouth cone match.
Described locking nut is when down screwing in the disposed thread C washer of bolt compression band projection, disposed thread C washer with projection can give locking nut reaction force, the threaded joints branch of such locking nut and bolt becomes tighter, makes structure more solid and reliable.
The internal thread of the disposed thread C washer of described band projection is after the compressing being subject to locking nut and mother nut, disposed thread C washer with projection tightens up, its dimension of inner screw thread diminishes, together with worm tooth closely cooperates with the worm tooth of bolt, surface of contact between worm tooth becomes face from point cantact and contacts, frictional force improves greatly, forms self-locking thus reaches locking object.
The advantage that the utility model is given prominence to is:
1, the structural type of boring pressure enclasping type is designed to, time locking nut is down screwed in, on the disposed thread C washer of the lower conical surface downward compression band projection of locking nut the conical surface of the conical surface and mother nut band notch upwards compression band projection disposed thread C washer band projection the lower conical surface, make to be with the disposed thread C washer of projection to tighten up, contact form between worm tooth becomes face from point cantact and contacts, frictional force improves greatly, forms self-locking thus reaches locking object.
2, the structural type of boring pressure enclasping type is designed to, make locking nut when down screwing in the disposed thread C washer of bolt compression band projection, packing ring can give locking nut reaction force, and the threaded joints branch of such locking nut and bolt becomes tighter, connects more solid and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation preventing the device of nut loosening described in the utility model.
Fig. 2 is the front elevation preventing the device of nut loosening described in the utility model.
Fig. 3 is the structural representation of locking nut described in the utility model.
Fig. 4 is the structural representation of mother nut described in the utility model.
Fig. 5 is the structural representation before the disposed thread C washer of band projection described in the utility model tightens up.
Fig. 6 is the structural representation after the disposed thread C washer of band projection described in the utility model tightens up.
Be labeled as in figure: bolt 1, locking nut 2, band projection disposed thread C washer 3, mother nut 4, plain washer 5, be connected workpiece 6.
Embodiment
Below by way of accompanying drawing, the technical solution of the utility model is described further.
As shown in Figures 1 to 6, the device preventing nut loosening described in the utility model, comprise bolt 1, locking nut 2, be with disposed thread C washer 3, mother nut 4, the plain washer 5 of projection and be connected workpiece 6, concrete structure and Placement are:
Described bolt 1 is hexagon head standard bolt, locking nut 2 is special nut, locking nut 2 upper end is tapped hole, the upper end of locking nut 2 is connected with bolt 1 by screw thread, lower end is that the conical surface matches with the conical surface on the disposed thread C washer 3 of band projection, disposed thread C washer 3 upper end with projection is the conical surface, lower end is the conical surface of band projection, mother nut 4 is special nut, mother nut 4 upper end is that the conical surface of band notch matches with the conical surface of disposed thread C washer 3 times end band projections of band projection, mother nut 4 lower end is tapped hole, the lower end of mother nut 4 is connected with bolt 1 by screw thread, plain washer 5 and be connected workpiece 6 and be directly enclosed within bolt 1.
Working principle and process:
On the band projection conical surface of the disposed thread C washer 3 with projection, the lower plane of plane and mother nut 4 notch is in a plane, and have certain gap with the lower plane of mother nut 4 conical surface, this gap is that worm tooth moves down when closely cooperating with the worm tooth of bolt 1 certain mobile space in order to when being with the disposed thread C washer 3 of projection to tighten up; With the disposed thread C washer 3 that the projection on the disposed thread C washer 3 of projection is in order to fixing belt projection, prevent from jumping, so that better and mother nut 4 trough of belt mouth cone match.
When locking nut 2 down screws in the disposed thread C washer 3 of the downward compression band projection of bolt 1, disposed thread C washer 3 with projection can to locking nut 2 one reaction forces, such locking nut 2 and the threaded joints branch of bolt 1 become tighter, make structure more solid and reliable.
The internal thread of the disposed thread C washer 3 with projection is consistent with the internal thread of mother nut 4 before tightening up, after the compressing being subject to locking nut 2 and mother nut 4, disposed thread C washer 3 with projection tightens up, its dimension of inner screw thread diminishes, together with worm tooth closely cooperates with the worm tooth of bolt 1, surface of contact between worm tooth becomes face from point cantact and contacts, and frictional force improves greatly, forms self-locking thus reaches locking object.
Claims (2)
1. prevent a device for nut loosening, comprise bolt, locking nut, band projection disposed thread C washer, mother nut, plain washer and be connected workpiece, it is characterized in that, concrete structure and Placement are:
Described bolt is hexagon head standard bolt, locking nut is special nut, the upper end of locking nut is tapped hole, the upper end of locking nut is connected with bolt by screw thread, lower end is that the conical surface matches with the conical surface on the disposed thread C washer of band projection, disposed thread C washer upper end with projection is the conical surface, lower end is the conical surface of band projection, mother nut is special nut, the upper end of mother nut is that under being with the conical surface of notch and being with the disposed thread C washer of projection, the conical surface of end band projection matches, the lower end of mother nut is tapped hole, the lower end of mother nut is connected with bolt by screw thread, plain washer and be connected workpiece and be directly enclosed within bolt.
2. the device preventing nut loosening according to claim 1, it is characterized in that, on the band projection conical surface of the disposed thread C washer of described band projection, the lower plane of plane and mother nut notch is in a plane, and has certain gap with mother nut conical surface lower plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520987150.6U CN205207390U (en) | 2015-12-02 | 2015-12-02 | Device for preventing nut is not hard up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520987150.6U CN205207390U (en) | 2015-12-02 | 2015-12-02 | Device for preventing nut is not hard up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205207390U true CN205207390U (en) | 2016-05-04 |
Family
ID=55845110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520987150.6U Expired - Fee Related CN205207390U (en) | 2015-12-02 | 2015-12-02 | Device for preventing nut is not hard up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205207390U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387056A (en) * | 2015-12-02 | 2016-03-09 | 广西大学 | Device for preventing nut looseness |
| CN108757688A (en) * | 2018-07-16 | 2018-11-06 | 李鹏飞 | A kind of locking combination nut of push mode |
-
2015
- 2015-12-02 CN CN201520987150.6U patent/CN205207390U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387056A (en) * | 2015-12-02 | 2016-03-09 | 广西大学 | Device for preventing nut looseness |
| CN108757688A (en) * | 2018-07-16 | 2018-11-06 | 李鹏飞 | A kind of locking combination nut of push mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20161202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |