CN207634492U - Plasticity locks check bolt - Google Patents
Plasticity locks check bolt Download PDFInfo
- Publication number
- CN207634492U CN207634492U CN201721188538.5U CN201721188538U CN207634492U CN 207634492 U CN207634492 U CN 207634492U CN 201721188538 U CN201721188538 U CN 201721188538U CN 207634492 U CN207634492 U CN 207634492U
- Authority
- CN
- China
- Prior art keywords
- nut
- locking
- plasticity
- plastic shim
- check bolt
- 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
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- Gasket Seals (AREA)
- Connection Of Plates (AREA)
Abstract
Plasticity locking check bolt is made of 3 parts, see attached drawing (1. nut, 2. screw rod, 3. plastic shim in figure), it is processed into homalocephalus in screw rod one end of plasticity locking check bolt, retain fraction screw thread, after nut is tightened, it is packed into plastic shim, axial compression or percussion plastic shim are allowed to be plastically deformed, intrude into screw rod homalocephalus end screw thread between cog, detaching by itself is prevented, nut opening is charged into outward and generates fixed locking, nut is prevented to turn round, since plastic shim is to fasten afterboarding in nut, nut loosening can be prevented in any angle position；The plastic shim part refunds that charge into nut opening can be released into locking by hammering with jumper bar when dismounting, lay down nut.
Description
Technical field
The utility model is related to a kind of bolt machinery anti-loose structures, can prevent bolt looseness under strong vibration operating mode.
Background technology
Bolt is a kind of standard component that application range is very extensive, but in actual use, it is bolted easy loosening,
Especially under strong vibration operating mode, there are mainly three types of modes at present for screw retention：First, locking, the currently used screw retention that rubs
Method belongs to the locking mode of friction more, locking to prevent nut from turning round dependent on the frictional force generated by pretightning force after tightening,
But moment, confficient of static friction was greatly reduced under strong vibration operating mode, and condition of self-locking is destroyed, and relaxation occurs simultaneously between internal and external threads
Accumulation, bolt pretightening continue to decline.Second is that machinery is locking, locking thoroughly but locking angle position is fixed, and retainer must be
The revolution of nut generation certain angle just plays barrier effect after loosening, and pretightning force is caused to be greatly reduced or disappear.Third, riveting is rushed
It is locking, nut loosening is prevented by destroying helicitic texture, and not easy to remove.
Invention content
Plasticity locking check bolt prevents nut from turning round after being deformed by plastic shim, keeps bolt pretightening.Plasticity is locked
Homalocephalus is processed into screw rod one end of tight check bolt, and member-retaining portion screw thread after nut is tightened, compresses axially or tap plastic shim
It is allowed to be plastically deformed, filling screw rod homalocephalus end screw thread between cog is open with nut, and nut is prevented to turn round and itself abjection.Plasticity
It locks check bolt and organizes prejudice attached drawing 1 (1. nut, 2. screw rod, 3. plastic shim in Fig. 1) by 3 parts, bolt is as needed
Choose to install different-thickness gasket, adjustment fastening thickness.
Plasticity locks check bolt in use, first by fastening nut, is then charged into plastic shim, is axially squeezed with specific purpose tool
Pressure or directly hammering plastic shim (Fig. 3), are allowed to be plastically deformed, charge into nut open slot outward, at this moment in plastic shim
Having outside screw rod homalocephalus has nut to be open (Fig. 2), and nut and screw rod is prevented to relatively rotate, and is allowed to generate locking, reaches nut
Locking purpose can stop in any angle position to prevent nut loosening since plastic shim is to fasten afterboarding in nut；
Plastic shim intrudes between the thread of screw rod homalocephalus end simultaneously, prevents from loosening under vibration operating mode.Wherein plastic shim
Thickness and material are determined by calculation according to specific bolt use condition, it is desirable that have enough creep strength and shear strength
Come the blocking torque provided；The plastic shim part refunds that charge into nut opening can be released by hammering with jumper bar when dismounting
Locking.
The utility model has the beneficial effects that：Overcoming the locking mode of existing bolt machinery, there are certain angle revolution pines
It is dynamic, it can completely stop in any angle to prevent nut loosening, and simple in structure, be easily installed and dismantle.
Description of the drawings
Fig. 1 is the structure chart of plasticity locking check bolt
Fig. 2 is the front view of nut in plasticity locking check bolt
Fig. 3 is the front view of plastic shim in plasticity locking check bolt
1. nut, 2. screw rod, 3. plastic shim in Fig. 1
Specific implementation mode
When plasticity locks check bolt installation, first torque spanner is used to tighten nut with rated moment, loosened, eliminates initial pine
Dynamic, adjustment screw angle makes nut fastening back nut opening tighten spiral shell towards installation personnel, then with torque spanner with rated moment
Red copper material can be used in mother, plastic shim, and red copper gasket is put between nut and square toes screw rod, then with specific purpose tool axial direction
It squeezes or directly hammers red copper gasket, be allowed to be plastically deformed, charge between nut open slot and screw flight tooth, complete plasticity
Lock check bolt installation.
When dismantling plasticity locking check bolt, it will be charged into width and the nut consistent jumper bar that is open by hammering when dismounting
The red copper shim portions refunds of nut opening, releases locking, then lays down nut, while cutting embedding between the thread of screw rod homalocephalus end
The red copper entered completes plasticity locking check bolt dismounting.
Claims (2)
1. plasticity locks check bolt, it is characterized in that：Homalocephalus is processed into screw rod one end, retains fraction screw thread, nut upper end has
One open slot, when installation, are packed into plastic shim after nut is tightened, and axial compression or tap gasket and are allowed to be plastically deformed；It tears open
The plastic shim part refunds that charge into nut opening can be released into locking by hammering with jumper bar when unloading.
2. plasticity locking check bolt according to claim 1 is charged into it is characterized in that by making gasket be plastically deformed
Nut open slot and screw flight tooth prevent nut and screw rods relatively rotates and detaching by itself, and plastic shim is in nut
Afterboarding is fastened, nut loosening can be prevented in any angle position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721188538.5U CN207634492U (en) | 2017-09-12 | 2017-09-12 | Plasticity locks check bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721188538.5U CN207634492U (en) | 2017-09-12 | 2017-09-12 | Plasticity locks check bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634492U true CN207634492U (en) | 2018-07-20 |
Family
ID=62862021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721188538.5U Expired - Fee Related CN207634492U (en) | 2017-09-12 | 2017-09-12 | Plasticity locks check bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207634492U (en) |
-
2017
- 2017-09-12 CN CN201721188538.5U patent/CN207634492U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 Termination date: 20190912 |