CN109780029A - A kind of mechanoluminescence type intelligent bolt with pretightning force instruction - Google Patents
A kind of mechanoluminescence type intelligent bolt with pretightning force instruction Download PDFInfo
- Publication number
- CN109780029A CN109780029A CN201910017926.4A CN201910017926A CN109780029A CN 109780029 A CN109780029 A CN 109780029A CN 201910017926 A CN201910017926 A CN 201910017926A CN 109780029 A CN109780029 A CN 109780029A
- Authority
- CN
- China
- Prior art keywords
- mechanoluminescence
- bolt
- coating
- pretightning force
- type material
- 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.)
- Pending
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention belongs to mechanical engineering and civil engineerings etc. to be bolted field, this patent discloses a kind of mechanoluminescence type intelligent bolts with pretightning force instruction, are a kind of mechanoluminescence type intelligent bolts that can be indicated pretightning force in assembling process and warn after installing and using to pretightning force decaying.The intelligent bolt includes plain bolt and mechanoluminescence type material coating；Mechanoluminescence profile material is solidificated in bolt head surface and for annular shape, during the installation process, when pretightning force reaches target value, coating outer ring just luminous prompting；It in use process after installation, as the attenuation coatings of the pretightning force annular radii that shines is gradually reduced, is tightened again when close to coating inner ring or luminous annulus disappearance Shi Zexu, to complete pretightning force installation instruction and decaying is warned two functions.For intelligent bolt of the invention convenient for producing and guaranteeing consistency in batches, practical is strong and without destroying bolt internal structure, has the beneficial effects such as lossless, precision is high.
Description
Technical field
The present invention relates to civil engineering and mechanical equipments etc. to be fastenedly connected field, in particular to a kind of high-end fasteners assembly
Installation pretightening force instruction is warned with pretightning force decaying after installation in the process.
Background technique
It is bolted and is widely used in the fields such as machinery, building, the energy and Aerospace Engineering.Currently, bolt scene fills
The size of bolt pretightening, in rundown process, the energy of input are controlled with being torque value when tightening bolt by monitoring
Only about 10% is converted into the pretightning force of bolt, and other about 90% energy are by the friction of screw thread facing and nut and connected piece
Contact face frictional dissipation therefore even if facing and end face coefficient of friction have small fluctuation, also lead to after bolt tightens
Certain difference is generated, pretightning force consistency is poor；Although preload can be improved to a certain extent using torque-angle method
The consistency of power, but the torque section in rundown process can still cause practical pre- because of the otherness of end face and facing coefficient of friction
Clamp force and target pretightning force generate certain deviation.In conclusion how to accurately control bolt to tighten pretightning force is in assembled in situ
Urgent problem.
Mechanoluminescence type intelligent bolt proposed by the present invention is there is not yet pertinent literature.The measuring technology master of live practical application
Have following several:
(1) CN 104568282B " a kind of device and its control method for testing bolt pretightening ", CN 103616118B " bolt
And its detection system, the control method of pretightning force " and CN 104075831A " a kind of high-strength bolt pretightening force measuring apparatus " etc.
Patent discloses the method for measuring bolt pretightening by foil gauge, and this method needs paste on the screw rod of each tested bolt
Multiple foil gauges, process is tedious, while enough space layout leads are reserved between bolt and connected piece.This method is to spiral shell
Bolt has certain damage, and is unable to satisfy live batch and assembles.
(2) CN 1156679C " ultrasonic wave bolt fastening force test device ", CN 105115652A are " a kind of using actively super
The method of guided Waves quantification monitoring bolt pre-fastening moment " etc. patents disclose according to ultrasonic wave different stress bolt
The different principle of internal communication speed realizes the measurement of bolt pretightening.This method needs to locate two end faces of bolt in advance
Reason, when measurement, needs couplant and measurement accuracy is affected by operator.
(3) CN 103323170B " a kind of the preload force measuring system and method for the connection of bolt group ", CN 204286667U
" a kind of tools for bolts ' pretension force measuring device " etc. discloses the installation pressure sensor between bolt and connected piece and directly measures bolt
Pretightning force, but this method be suitble to detection, experimental verification, be unsuitable for practical set because installation pressure sensor will affect by
The rigidity of connector, while also influencing to combine the reliability of surface pressure distribution and use process.
Furthermore, it is also possible to which amesdial horizontal metroscope and laser sensor directly measure bolt elongate amount, but in practical applications
All there is limitation.
However for the bolt pretightening attenuation problem after installation in use, also there is part to pass through ultrasound
The methods of amount, ring-shaped piezo ceramic detection solve, but have some limitations in construction and installation.
Summary of the invention
Deficiency existing in terms of in view of pretightning force real-time detection in the prior art at the scene bolt assembly application, and installation
Pretightning force decaying is difficult the problems such as accurately measuring in use process afterwards, and the present invention provides a kind of can indicate in assembling process in advance
Clamp force and the intelligent bolt warned after installing and using to pretightning force decaying, i.e., a kind of mechanoluminescence type intelligence with pretightning force instruction
It can bolt.
The present invention adopts the following technical scheme that:
A kind of mechanoluminescence type intelligent bolt with pretightning force instruction, including bolt and mechanoluminescence type material coating；Described
Mechanoluminescence type material coating will generate lasting light when the external force such as being squeezed, stretching and rubbing, become smaller when external force or
Light extinguishes when disappearance, also, when mechanoluminescence type material coating generates light required external force value is no more than installed
Pretightning force target value；Bolt head surface of the mechanoluminescence profile material curing of coatings in plain bolt.
Further, the mechanoluminescence type rare earth coating for being solidificated in bolt head surface is annulus shape, including pretightning force declines
Subtracting the coating outer ring of the coating inner ring warned and instruction installation pretightening force, coating inner ring corresponds to pretightning force minimum alarm value,
And coating outer ring corresponds to installation pretightening force target value.
Further, the mechanoluminescence type material coating solidifies the bolt head in bolt by way of coating or film
Surface.
Further, the shape of the mechanoluminescence type material coating is according to specifically used Demand Design.
Further, the shape of the mechanoluminescence type rare earth coating is circular ring shape, the circular ring shape of notch, circle, length
Rectangular, hollow rectangle, square, hollow square, hexagon, hollow hexagon, other equilateral or hollow etc.
Side shape.
Further, the mechanoluminescence type material coating is using rare earth aluminate, titanate as the mechanoluminescence of system
Profile material.
Compared with ultrasonic wave, foil gauge and micrometer horizontal metroscope etc. pre-tighten force measuring method, the invention has the following advantages that
(1) for intelligent bolt of the invention convenient for producing in batches and guaranteeing consistency, practical is strong；It is not required to by any measurement
Device and method, in this embodiment it is not even necessary to torque spanner；In the space of narrow dark, installation can more play its advantage.
(2) intelligent bolt collection installation pretightening force of the invention indicates two functions of warning with pretightning force decaying in use process
In one, and to not needing to make any change to existing installation operating condition and structure, there is universality.
(3) without destroying bolt internal structure, have the characteristics that lossless, precision is high.
Detailed description of the invention
Fig. 1 is the bolt arrangement top view of bolt head surface cure circular ring shape mechanoluminescence type material coating.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is bolt head surface stress distribution curve.
Fig. 4 is the bolt of bolt head surface cure circle mechanoluminescence type material coating.
Fig. 5 is the bolt of bolt head surface cure circular ring shape mechanoluminescence type material coating.
In Fig. 1-5: 1, bolt, 2, mechanoluminescence type material coating, 2-1, coating inner ring, 2-2, coating outer ring.
Specific embodiment
Further explanation is done to the present invention with reference to the accompanying drawings and embodiments.
As shown in Figure 1.Mechanoluminescence type intelligent bolt of the invention, including plain bolt 1 and mechanoluminescence profile material apply
Layer 2.It can be shone this characteristic using mechanoluminescence type material coating stress, mechanoluminescence profile material is passed through into surface treatment coating
Or the techniques such as film are solidificated in bolt head surface and are annular shape, when applying pretightning force to bolt, bolt head can become
Shape is presented " bowl-shape " as shown in Figure 2, and the deformation of bolt head central concave is larger, and corresponding stress value is also larger, and bolt is in front
Edge deformation is smaller, and stress value is also relatively small, and stress value distribution trend is as shown in Figure 3.The deformation of bolt head can be to coated in table
The mechanoluminescence type material coating 2 in face generates the effects of extruding power, and then mechanoluminescence type material coating 2 is made to generate light.
Embodiment 1
A kind of mechanoluminescence type intelligent bolt with pretightning force instruction, as shown in figure 4, including bolt 1 and mechanoluminescence profile material
Coating 2；The mechanoluminescence type material coating 2 will generate light, external force when the external force such as being squeezed, stretching and rubbing
Light extinguishes when becoming smaller or disappearing, and the mechanoluminescence type material coating 2 generates required external force value when light and is not more than installation
Pretightning force target value；The mechanoluminescence type material coating 2 is coated in the bolt head surface of bolt 1, and the mechanoluminescence
Type material coating 2 is circle, wherein the mechanoluminescence type material coating 2 is using rare earth aluminate, titanate as the power of system
Electroluminescent material, such as MgAl11O19:Ce3+,Tb3+。
During the installation process, being continuously increased with pretightning force, bolt head deformation is gradually increased, when pretightning force reaches certain
When value, i.e. the pretightning force luminous value of mechanoluminescence type material coating 2, mechanoluminescence type material coating 2 generates light, with preload
Power further increases, and light radius can constantly increase, until installation pretightening force reaches installation pretightening force target value.
In use process after mounting, since the factors such as vibration, temperature cause bolt pretightening that can constantly reduce, at this time
The light radius of mechanoluminescence type rare earth coating 2 can gradually become smaller, until decaying to the minimum of setting, minimum be can be set
Preload force value when for light disappearance, is also possible to preload force value when bright radius weakens to a certain extent, needs at this time pair
Bolt 1 check and tighten again.
Embodiment 2
A kind of mechanoluminescence type intelligent bolt with pretightning force instruction, as shown in Figure 1,5, including bolt 1 and mechanoluminescence profile
Expect coating 2；Mechanoluminescence type material coating 2 coated in bolt head surface is annulus shape, as shown in Figure 1,5, including coating
Inner ring 2-1 and coating outer ring 2-2, floating coat inner ring 2-1 correspond to pretightning force minimum alarm value, and coating outer ring 2-2 corresponds to peace
Fill pretightning force target value；
The coating inner ring 2-1 and coating outer ring 2-2 will generate light, external force when being squeezed, stretching and rubbing external force
Light extinguishes when disappearance；Wherein, the mechanoluminescence type rare earth coating 2 is rare earth aluminate, titanate is system mechanoluminescence
Material, MgAl11O19:Ce3+,Tb3+。
During the installation process, being continuously increased with bolt pretightening, bolt head deformation are gradually increased, due to different half
Diameter corresponds to different pretightning forces, and when pretightning force reaches certain value, coating inner ring 2-1 will generate a circle light, with preload
Power further increases, and light circle radius can constantly increase, when reaching bolt pretightening target value, at coating outer ring 2-2 just
A circle light is generated well, if installation pretightening force is more than that target pre-tightens force value, light circle radius can be more than coating outer ring 2-2
Radius so as to cause light disappearance.
In use process after mounting, since the factors such as vibration, temperature cause bolt pretightening that can constantly reduce, at this time
Light circle can gradually be shunk to coating inner ring 2-1 from coating outer ring 2-2, decay to the minimum of setting when pretightning force hereinafter,
Then light circle just disappears from coating inner ring 2-1, needs to carry out bolt 1 at this time to check and tighten again.
Embodiment 3
A kind of mechanoluminescence type intelligent bolt with pretightning force instruction, same as Example 1, difference is the mechanoluminescence type
The shape of rare earth coating 2 is different；
The mechanoluminescence type material coating 2 is the annular shape of notch or the rectangle or center hollow of rectangle or center hollow
Hexagon.
It is also same as Example 1 with use process in installation process, with being continuously increased for pretightning force, bolt head deformation by
The pretightning force luminous value of the mechanoluminescence type material coating 2 is gradually increased to, mechanoluminescence type material coating 2 generates light, with
Pretightning force further increase light and constantly enhance, until installation pretightening force reaches installation pretightening force target value.
In use process after mounting, as bolt pretightening can be reduced constantly, mechanoluminescence type material coating 2 it is bright
Light annulus can be inside contracted gradually, until that is, light annulus disappears when decaying to the minimum of setting, then need to examine bolt 1
It looks into and tightens again.
Present invention seek to address that current industry inner bolt assembly pretightening power real-time detection difficulty and installation pretightening force consistency
The problem of difference also provides a kind of inexpensive, efficient solution for bolt Automated assembly, can replace current torque
Method, angle method etc. indirectly control the tightening technique of bolt pretightening.
The especially scheme of embodiment 2, since coating inner ring 2-1 corresponds to pretightning force minimum alarm value and coating outer ring 2-2
The design of corresponding installation pretightening force target value, enables bolt to indicate pretightning force in assembling process and after installing and using to pre-
Clamp force decaying is warned, during the installation process, when pretightning force reaches target value, coating outer ring 2-2 just luminous prompting；After installation
In use process, with pretightning force attenuation coatings shine annular radii be gradually reduced, when close to coating inner ring 2-1 or shine
Annulus disappearance Shi Zexu is tightened again, to complete pretightning force installation instruction and decaying is warned two functions.
Therefore existing structures and methods are compared, practical of the present invention is strong, and adaptability for working condition is strong and has lossless, high
The advantages that precision.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, such as shape, the circle of coating
The diameter etc. of ring, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (7)
1. a kind of mechanoluminescence type intelligent bolt with pretightning force instruction, including bolt (1), it is characterised in that further include that power causes hair
Light type material coating (2)；The mechanoluminescence type material coating (2) will be produced when being squeezed, stretching and rubbing external force
Raw light, light extinguishes when external force becomes smaller or disappears, also, the mechanoluminescence type material coating (2) generates light when institute
Need external force value no more than installation pretightening force target value；The mechanoluminescence type material coating (2) is solidificated in the spiral shell of bolt (1)
Bolt head surface.
2. intelligent bolt according to claim 1, it is characterised in that: be solidificated in the mechanoluminescence profile material of bolt head surface
Coating (2) is annulus shape, including coating inner ring (2-1) and coating outer ring (2-2), and floating coat inner ring (2-1) is corresponding to be pre-tightened
Power minimum alarm value, and the corresponding installation pretightening force target value of coating outer ring (2-2).
3. intelligent bolt according to claim 1 or 2, it is characterised in that: the mechanoluminescence type material coating (2) passes through
The mode of coating or film solidifies in the bolt head surface of bolt (1).
4. intelligent bolt according to claim 1, it is characterised in that: the shape of the mechanoluminescence type material coating (2)
According to specifically used Demand Design.
5. intelligent bolt according to claim 4, it is characterised in that: the shape of the mechanoluminescence type material coating (2)
For circular ring shape, the circular ring shape of notch, circle, rectangle, hollow rectangle, square, hollow square, hexagon, in
The hexagon of sky, other equilateral or hollow equilateral shape.
6. intelligent bolt described according to claim 1 or 2 or 4 or 5, it is characterised in that the mechanoluminescence type material coating
(2) for using rare earth aluminate, titanate as the mechanoluminescence profile material of system.
7. intelligent bolt according to claim 3, it is characterised in that the mechanoluminescence type rare earth coating (2) is with rare earth
Aluminate, the mechanoluminescence profile material that titanate is system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017926.4A CN109780029A (en) | 2019-01-09 | 2019-01-09 | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017926.4A CN109780029A (en) | 2019-01-09 | 2019-01-09 | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109780029A true CN109780029A (en) | 2019-05-21 |
Family
ID=66500181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910017926.4A Pending CN109780029A (en) | 2019-01-09 | 2019-01-09 | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109780029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670497A (en) * | 2021-08-16 | 2021-11-19 | 山东中天智控科技有限公司 | Detection method and detection device for fastener |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB900231A (en) * | 1957-10-04 | 1962-07-04 | Henry Anderson Spencer | Means for controlling axial loads on bolts or the like |
| JP2006275796A (en) * | 2005-03-29 | 2006-10-12 | National Institute Of Advanced Industrial & Technology | Fastener and its use |
| CN201374270Y (en) * | 2009-02-07 | 2009-12-30 | 富士康(昆山)电脑接插件有限公司 | Switch |
| CN103670473A (en) * | 2013-11-28 | 2014-03-26 | 尤洛卡矿业安全工程股份有限公司 | Anchor bolt fastening force status indication washer |
| CN204085765U (en) * | 2014-08-22 | 2015-01-07 | 北京强度环境研究所 | Tools for bolts ' pretension force measuring device |
| CN104747566A (en) * | 2015-03-27 | 2015-07-01 | 朱小菊 | Precision fastening nut |
| CN107219948A (en) * | 2017-04-21 | 2017-09-29 | 努比亚技术有限公司 | The control device and its method of a kind of screen breathing bright screen |
| CN108314958A (en) * | 2018-01-30 | 2018-07-24 | 西昌学院 | A kind of preparation method for the stress light emitting material judged applied to tennis race |
| CN109018691A (en) * | 2018-07-25 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of buffer block and preparation method thereof and package component |
| CN209638195U (en) * | 2019-01-09 | 2019-11-15 | 烟台中天连接技术研究院 | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction |
-
2019
- 2019-01-09 CN CN201910017926.4A patent/CN109780029A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB900231A (en) * | 1957-10-04 | 1962-07-04 | Henry Anderson Spencer | Means for controlling axial loads on bolts or the like |
| JP2006275796A (en) * | 2005-03-29 | 2006-10-12 | National Institute Of Advanced Industrial & Technology | Fastener and its use |
| CN201374270Y (en) * | 2009-02-07 | 2009-12-30 | 富士康(昆山)电脑接插件有限公司 | Switch |
| CN103670473A (en) * | 2013-11-28 | 2014-03-26 | 尤洛卡矿业安全工程股份有限公司 | Anchor bolt fastening force status indication washer |
| CN204085765U (en) * | 2014-08-22 | 2015-01-07 | 北京强度环境研究所 | Tools for bolts ' pretension force measuring device |
| CN104747566A (en) * | 2015-03-27 | 2015-07-01 | 朱小菊 | Precision fastening nut |
| CN107219948A (en) * | 2017-04-21 | 2017-09-29 | 努比亚技术有限公司 | The control device and its method of a kind of screen breathing bright screen |
| CN108314958A (en) * | 2018-01-30 | 2018-07-24 | 西昌学院 | A kind of preparation method for the stress light emitting material judged applied to tennis race |
| CN109018691A (en) * | 2018-07-25 | 2018-12-18 | 京东方科技集团股份有限公司 | A kind of buffer block and preparation method thereof and package component |
| CN209638195U (en) * | 2019-01-09 | 2019-11-15 | 烟台中天连接技术研究院 | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670497A (en) * | 2021-08-16 | 2021-11-19 | 山东中天智控科技有限公司 | Detection method and detection device for fastener |
| CN113670497B (en) * | 2021-08-16 | 2023-12-29 | 烟台中天连接技术研究院 | Detection method and detection device for fastener |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5029480A (en) | Ultrasonic load indicating member | |
| US3383974A (en) | Load indicating means | |
| US4904091A (en) | Threaded average temperature thermocouple | |
| CN109883664A (en) | Bolt for wind power generation real time monitoring and diagnostic system | |
| Jiang et al. | An experimental study of the torque-tension relationship for bolted joints | |
| CN106872092A (en) | A kind of method of testing of dynamometry bolt and axial force | |
| CN108204876A (en) | Pretightning force real-time detection apparatus and method during a kind of bolts assemblies | |
| CN209638195U (en) | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction | |
| CN110894846A (en) | Fastening method of bolt | |
| EP1549862B1 (en) | Thread forming fasteners for ultrasonic load measurement and control | |
| CN109780029A (en) | A kind of mechanoluminescence type intelligent bolt with pretightning force instruction | |
| DE19980796B4 (en) | Method and device for producing and testing screw connections | |
| GB2443207A (en) | Mounting a sensor to component | |
| CN111075819B (en) | Color-changing bolt | |
| EP3207351A1 (en) | Coating bond test method and method of making a specimen for testing bond strength of a coating | |
| US20200208672A1 (en) | Apparatus and Method to Establish Two Reference Positions Within a Fastener In Order to Allow the Measurement and Monitoring of Fastener Load | |
| JP4649684B2 (en) | Fasteners and their use | |
| JPH03103610A (en) | Apparatus for tightening axial force bolt | |
| JP4953114B2 (en) | Fasteners and their use | |
| JP4953114B6 (en) | Washer | |
| Liu et al. | Identifying the anti-loosening frictional mechanism that can provide stable frictional torques while avoiding stress concentration | |
| Hoisington et al. | Measured anchor rod tightening of high-mast light poles in Alaska | |
| CN112879406B (en) | Method of operating a threaded fastener and control system | |
| Kaneda et al. | Application of plastic region tightening bolt to flange joint assembly | |
| SU1767373A1 (en) | Threaded joint assembly quality control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |