CN106291716A - Bolt gets loose and detects device and detection method thereof - Google Patents
Bolt gets loose and detects device and detection method thereof Download PDFInfo
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- CN106291716A CN106291716A CN201510239216.8A CN201510239216A CN106291716A CN 106291716 A CN106291716 A CN 106291716A CN 201510239216 A CN201510239216 A CN 201510239216A CN 106291716 A CN106291716 A CN 106291716A
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 238000013519 translation Methods 0.000 claims abstract description 15
- 230000008859 change Effects 0.000 claims abstract description 14
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 230000008439 repair process Effects 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
A kind of bolt gets loose detection device, comprises a washer being made up of metal material, and a testing circuit.Testing circuit includes power supply supply element, an electric bridge unit of a supply required electric power, and a difference amplifier.The detection method of the present invention is to be arranged in by washer on a screw rod of a bolt, and make washer electrically connect with testing circuit, the deformation signal being urged generation by bolt followed by washer becomes impedance to change signal through this electric bridge cell translation, and by exporting after difference amplifier processing and amplifying, judge that the power that screws tight of this bolt and whether producing gets loose by the size of washer impedance variation signal produced by deformation, and then prompting maintainer locks this bolt the most once again as early as possible, so, not only can save the repair time and improve overhaul efficiency, the safety in utilization of this bolt can also be improved.
Description
Technical field
The invention relates to a kind of detection device and detection method, particularly relate to a kind of bolt
Get loose detection device and detection method thereof.
Background technology
Bolt often arranges in pairs or groups nut and washer and for being combined by two workpiece.Though these elements
The least, but must assure that and lock between bolt with the nut arranged in pairs or groups mutually, just it is avoided that and is locked
Solid two workpiece will not relatively loosen or depart from, be particularly applied to common carriage or
During work implements, once bolt occurs to loosen, and maintainer locks the most immediately, more likely
Therefore work peace accident or public danger are caused.
It is currently used in the environment such as public place, factory, common carriage, work implements
Bolt, it is common that rely on personnel's periodical inspection clamping screw one by one, to avoid initiation work
Peace accident.But the usage quantity of bolt is huge, cause upkeep operation fairly time consuming, maintenance
Efficiency is the best.
Summary of the invention
Therefore, a purpose of the present invention, is to provide whether one can detect bolt rapidly
Getting loose, and send alarm signal in good time, prompting personnel overhaul the bolt got loose, thus can
Save the repair time, improve overhaul efficiency, and improve the bolt of the safety in utilization of bolt
Get loose detection device.
Bolt of the present invention gets loose detection device, comprises one by the washer made by metal material,
And a testing circuit.This washer has one with the through hole stretched through for a bolt.This detection
Circuit includes that one supplies element, an electric bridge unit in order to supply the power supply of required electric power, and
One difference amplifier；This electric bridge unit has one first resistor, one and this first electricity
Second resistor of resistance device series connection, one connect with the two ends at this washer radial direction longest distance
3rd resistor, and two output units.Wherein, this first and second resistance being serially connected
The 3rd resistor and washer that device is serially connected with this are in parallel, and supply element with this power supply
Being in parallel, these output units are to be connected between first and second resistor that is serially connected,
And between this 3rd resistor being serially connected and washer, this difference amplifier has two
The individual signal input part electrically connected with these output units respectively, and a signal output unit.Borrow
This this washer by deformation produced by this bolt fastening force size variation through this electric bridge cell translation
Become the impedance variation signal of this washer, and inputted this differential wave by these signal input parts and put
Big device is exported by this signal output unit after signal processing and amplifying, for judging compeling of this bolt
It is loosening whether clamp force produces.
Bolt of the present invention gets loose detection device, also comprise that a spiral winding is located on this washer
One plain conductor, these the first plain conductor two ends lay respectively at this washer radially longest distance
Two ends, and the 3rd resistor of this electric bridge unit is the two ends phase with this first plain conductor
Series connection, whereby this washer by this bolt lock urgent pressure tensile deformation, make this first metal
The conducting path distance of wire go-and-retum shortens, and during this bolt looseness, this washer is urged
Power reduces and deformation quantity extends into original preseting length, the biography of this first plain conductor go-and-retum
Guiding path is apart from elongated and produce deformation signal, and becomes impedance to change through this electric bridge cell translation
Signal, by exporting after this difference amplifier processing and amplifying.
Bolt of the present invention gets loose detection device, also comprise one be connected with below this washer soft
Circuit board, this flexible circuit board has a perforation of the through hole of this washer of connection, and one in
Continuously the second plain conductor of bending, these the second plain conductor two ends lay respectively at should China
The bottom surface at the two ends at department's radially longest distance, and the 3rd resistor of this electric bridge unit be with
The two ends of this second plain conductor are in series, and this washer is subject to this flexible circuit board simultaneously whereby
The urgent pressure of this bolt lock and synchronize deformation, the now conducting pathway of this second plain conductor go-and-retum
Footpath distance shortens, during this bolt looseness, and this washer and the urgent pressure suffered by this flexible circuit board
Reducing and deformation quantity tails off, the conducting path distance of this second plain conductor go-and-retum extends into
Originally preseting length and the deformation signal that produces becomes impedance variation letter through this electric bridge cell translation
Number, by exporting after this difference amplifier processing and amplifying.
Another object of the present invention, is to provide one can save the repair time and improve maintenance
The bolt of efficiency gets loose detection method.
Bolt of the present invention get loose detection method be use aforesaid bolt get loose detection device hold
OK, comprise: the washer that (a) is made of metal is arranged on a screw rod of a bolt, and
This washer two ends at radial direction longest distance the 3rd of the electric bridge unit with this testing circuit the
Resistor in series；And (b) utilizes the screw lock location of this bolt to force this washer pressurized to draw
Stretch and produce deformation signal, becoming impedance variation letter through this electric bridge cell translation of this testing circuit
Number and by after this difference amplifier processing and amplifying export, produced by this washer deformation
Whether the size of raw this washer impedance variation signal produces pine with the screw lock power judging this bolt
Dynamic.
Bolt of the present invention gets loose detection method, in step (a), also comprises a spiral winding and is located at
The first plain conductor on this washer, these the first plain conductor two ends lay respectively at this washer footpath
Two ends at longest distance, and make the 3rd resistor of this electric bridge unit be and this first gold medal
The two ends belonging to wire are in series；In step (b), the fastening force size variation of this bolt, make
This washer produces different deformation quantity, so make the path of this first plain conductor go-and-retum away from
Produce deformation signal from change, become impedance variation signal through this electric bridge cell translation and pass through
Export after this difference amplifier processing and amplifying.
Bolt of the present invention gets loose detection method, in step (a), also comprises one and is connected with in this China
Flexible circuit board below department, this flexible circuit board has one in bending continuously and two ends difference
Be positioned to should the second plain conductor of bottom surface, two ends at washer radially longest distance, and be somebody's turn to do
3rd resistor of electric bridge unit is that the two ends with this second plain conductor are in series；In step
In (b), the fastening force size variation of this bolt, make this washer and this flexible circuit board produce same
Step deformation, and make the path distance of this second plain conductor go-and-retum change and produce deformation letter
Number, become impedance variation signal through this electric bridge cell translation and put by this difference amplifier
Export after big process.
The beneficial effects of the present invention is and this washer can be made when screw lock by compeling by this bolt
Pressing and produce deformation, this deformation signal becomes impedance variation signal through this electric bridge cell translation and leads to
Cross and export after this difference amplifier processing and amplifying, and can transmit to a monitoring system, when
During this bolt looseness, the urgent pressure suffered by this washer alleviates and deformation quantity extends into and originally set
Measured length, this washer impedance will become big, through the impedance variation signal that this electric bridge cell translation becomes
Increasing, this monitoring system just can learn that this bolt is the most loosening, and maintainer can be use up easily
Early response also locks this bolt immediately once again, so, not only can save repair time and raising
Overhaul efficiency, moreover it is possible to improve the safety in utilization of this bolt, and be applied to common carriage
Or during work implements, more can be prevented effectively from because of bolt get loose the public danger occurred or work peace
Accident.
Accompanying drawing explanation
Fig. 1 is a schematic diagram, illustrates that bolt of the present invention gets loose and detects the first embodiment of device；
Fig. 2 is a use schematic diagram, and the use state of this first embodiment is described, aobvious in figure
Show the state that bolt is not yet locked；
Fig. 3 is a use schematic diagram, and the use state of this first embodiment is described, aobvious in figure
Show the state that bolt has been locked；
Fig. 4 is a schematic diagram, illustrates that bolt of the present invention gets loose and detects the second embodiment of device；
Fig. 5 is a schematic diagram, illustrates that bolt of the present invention gets loose and detects the 3rd embodiment of device；
Fig. 6 is a use schematic diagram, and the use state of the 3rd embodiment is described, aobvious in figure
Show the state that bolt has been locked, figure is not drawn washer；And
Fig. 7 is a flow chart, illustrates that bolt of the present invention gets loose an embodiment of detection method.
Detailed description of the invention
Refering to Fig. 1, bolt of the present invention get loose detection device first embodiment, comprise one by
Washer 1 made by metal material, and a testing circuit 2.This washer 1 has one to be run through
Through hole 13.This testing circuit 2 includes that one supplies element in order to supply the power supply of required electric power
21, an electric bridge unit 22, and a difference amplifier 23.This power supply supply element
21 is DC source, is to explain with battery in the present embodiment, its unidirectional current supplied
Pressure is VDC.It addition, in the present embodiment, this electric bridge unit 22 has one first resistor
R1, a second resistor R2 connected with this first resistor R1, one and this washer 1 footpath
3rd resistor R3 of the two ends series connection at longest distance, and two output units 221,
Wherein, this first and second resistor R1, R2 being serially connected with this be serially connected the 3rd
Resistor R3 and washer 1 are in parallel, and are in parallel with this power supply supply element 21, these
Output unit 221 is to be connected between first and second resistor R1, R2 of being serially connected,
And between this 3rd resistor R3 being serially connected and washer 1.This difference amplifier
23 have two signal input parts 231 electrically connected respectively with these output units 221, and
One signal output unit 232, this signal output unit 232 can be electrically connected with a monitoring system (not shown)
Connect.
Being learnt by ohm law, resistance is directly proportional to length and the resistance coefficient thereof of wire, with
Its sectional area is inversely proportional to.If there being its a length of L of a conductor, corresponding resistance is R, if
This conductor being applied pressure and makes its contraction in length, sectional area increases, and resistance value will be gone out few；
If but conductor is imposed pulling force, then its length can increase, and sectional area reduces, and will cause electricity
Resistance increases.
Refering to Fig. 1,2,3, on using, this bolt detection device that gets loose can be suitably used for appointing
In the screw-locking structure of one bolt 3, its way only need to make the screw rod 31 of this bolt 3 first run through this
The through hole 13 of washer 1, then run through and treat lock 4, and then coordinate a nut 7 to be screw-locked at
On one loaded object 5, when locking due to this bolt 3, its screw head 32 can urge this washer 1,
This washer 1 is made to produce tensile deformation.Supply electric power by this power supply supply element 21, make
Obtain this washer 1, this electric bridge unit 22, and this difference amplifier 23 and constitute electrically conducting
Loop.This washer 1 is urged produced deformation signal warp by the screw head 32 of this bolt 3 whereby
This electric bridge unit 22 is converted into the impedance variation signal of this washer 1, and is inputted by these signals
Portion 231 inputs this difference amplifier 23, is amplified by this difference amplifier 23
Exported by this signal output unit 232 after process, and be sent to a monitoring system (not shown),
Recorded by this monitoring system and monitor.
Due to this bolt 3 screw-locking structure in use for some time, can because being shaken by external force
Gradually loosen etc. factor, produce once this bolt 3 and loosen, the screw head 32 of this bolt 3
Can reduce for compeling pressure produced by this washer 1, thus the deformation quantity of this washer 1 can be stretched
Grow and produce deformation signal, change the impedance variation signal of gained also via this electric bridge unit 22
Can increase, the impedance variation signal after increase is sent to this monitoring system via above-mentioned path,
Carry out just having learned this bolt 3 easily after record processes with comparison by this monitoring system
Loosen, thus can show that this bolt 3 is numbered or position, be simultaneously emitted by sound or light
Or the information warning such as word, maintainer can be responded as early as possible and immediately locks this bolt once again
3；So, not only can save the repair time and improve overhaul efficiency, moreover it is possible to improving bolt 3
Safety in utilization, and when being applied to common carriage or work implements, more can effectively keep away
The work peace accident exempting to get loose occurred because of bolt 3 or public danger.
Refering to Fig. 4, bolt of the present invention gets loose and detects the second embodiment of device, the present embodiment
Also comprising the first plain conductor 25 that a spiral winding is located on this washer 1, this first metal is led
Line 25 two ends lay respectively at the two ends at this washer 1 radially longest distance, and this electric bridge unit
The 3rd resistor R3 of 22 is that the two ends with this first plain conductor 25 are in series.Exist whereby
Using, when be suitable for bolt 3 (seeing Fig. 3) locking, this washer 1 is urged product
Raw tensile deformation, this first plain conductor 25 also can compressive deformation, now this first genus simultaneously
The conducting path distance of wire 25 go-and-retum can shorten, and the deformation letter that this path distance shortens
Number also can be converted into impedance variation signal through this electric bridge unit 22 and be put by this differential wave
Export after big device 23 processing and amplifying and be sent to this monitoring system.When this bolt 3 loosens,
This washer 1 alleviates with the urgent pressure suffered by this first plain conductor 25 and makes deformation quantity stretch
Long, now the conducting path of this first plain conductor 25 go-and-retum is apart from elongated, through this electric bridge
The impedance signal that unit 22 is converted into can become big, after this monitoring system is recorded and comparison processes
Also can learn that this bolt 3 is the most loosening, it is thus possible to reach identical with first embodiment easily
Effect.And the present embodiment is by the path of the go-and-retum before and after this first plain conductor 25 deformation
The distance testing mechanism that whether gets loose as bolt 3 of change, can relatively first embodiment directly with
The deformation quantity at the two ends at the radial direction longest distance of this washer 1 does the mode detected more can
The effectively detection sensitivity of promotion signal change.
Refering to Fig. 5,6, bolt of the present invention get loose detection device the 3rd embodiment, this enforcement
Example also comprises the flexible circuit board 6 being located at this washer 1 bottom surface, and this flexible circuit board 6 has
There is a perforation 61 of the through hole 13 of this washer 1 of a connection, and one in the second of bending continuously
Plain conductor 62, these the second plain conductor 62 two ends lay respectively to should washer 1 radially
The bottom surface at the two ends at longest distance, and the 3rd resistor R3 of this electric bridge unit 22 be with
The two ends of this second plain conductor 62 are in series.Whereby on using, this bolt 3 first runs through
The through hole 13 of this washer 1 and the perforation 61 of this flexible circuit board 6, then run through thing to be locked
Part 4, and then coordinate this nut 7 to be screw-locked on a loaded object 5, when this bolt 3 is locked
Time, this washer 1 and this flexible circuit board 6 also can pressurized and synchronize deformation, now this second
The conducting path distance of plain conductor 62 go-and-retum can shorten.When this bolt 3 loosens, should
Washer 1 reduces with the urgent pressure suffered by this flexible circuit board 6, this second plain conductor 62
The conducting path distance meeting of go-and-retum is elongated and produces deformation signal and through this electric bridge unit 22
It is converted into impedance variation signal, by exporting after this difference amplifier 23 processing and amplifying,
And then it is sent to this monitoring system to monitor at any time and to point out in good time.Therefore, this enforcement
Example can reach effect identical with this first embodiment equally.
Refering to Fig. 7, bolt of the present invention gets loose an embodiment of detection method, bolt of the present invention
The detection method that gets loose can use above-mentioned bolt get loose detection device three embodiments shown in side
Formula, the method comprises the steps of (a) and (b).
Coordinate refering to Fig. 1,3, in step (a), the washer 1 being made of metal wears
On a screw rod 31 of a bolt 3, and these washer 1 two ends at radial direction longest distance are also
Connect with the 3rd resistor R3 of the electric bridge unit 22 of a testing circuit 2.
In step (b), utilize the screw lock of this bolt 3 to position, force this washer 1 pressurized and
Stretch and produce deformation signal and input this testing circuit 2, be converted into resistance through this electric bridge unit 22
Resistance moves signal, and by exporting after this difference amplifier 23 processing and amplifying, by shape
Become the size of produced this washer 1 impedance variation signal to judge the screw lock power of this bolt 3
Whether loosen.
Special instruction, when in step (a), is to use this bolt to get loose to detect device
First embodiment, in step (b), is that the electric bridge unit 22 utilizing this testing circuit 2 is examined
Survey the deformation signal change at these washer 1 two ends at radial direction longest distance, it is judged that this bolt
Whether the screw lock power of 3 produces loosening.
Coordinate refering to Fig. 4, when in step (a), be to use this bolt to get loose to detect device
Second embodiment, in step (b), is to utilize this washer 1 itself to produce different deformation quantities,
Make the conducting path distance of the first plain conductor 25 go-and-retum that spiral winding is located on this washer 1
Change and produce impedance variation signal, and by this difference amplifier 23 processing and amplifying after
Output, whether the size by means of this impedance variation signal produces with the screw lock power judging this bolt 3
Loosen.
Coordinate refering to Fig. 5,6, when in step (a), be to use this bolt to get loose detection device
Above-mentioned 3rd embodiment, in step (b), be to utilize this washer 1 and this flexible circuit board
6 produce and synchronize deformation, make to be arranged on this flexible circuit board 62 in continuously bending this second
The conducting path distance of plain conductor 62 go-and-retum changes and produces deformation signal and change and defeated
Enter this testing circuit 2 and be converted into impedance variation signal through this electric bridge unit 22, poorer by this
Export after dynamic signal amplifier 23 processing and amplifying, change the size of signal to sentence by this impedance
Whether the screw lock power of this bolt 3 disconnected loosens.
In sum, bolt of the present invention gets loose and detects device and detection method thereof, by above-mentioned
Design, utilizes this bolt 3 can make this washer 1 two at radial direction longest distance when screw lock
End or the first plain conductor 25 of being located on this washer 1 or be located at below this washer 1 soft
The second plain conductor 62 on circuit board 6, is produced deformation signal because urging, through being somebody's turn to do
Electric bridge unit 22 is converted into impedance variation signal and is amplified by this difference amplifier 23
Export after process, and be sent to a monitoring system, loosen once this bolt 3, compel pressure
Alleviating and deformation quantity is elongated, this impedance variation signal increases, and is converted into through this electric bridge unit 22
Impedance signal increase, this monitoring system just can learn that this bolt 3 is the most loosening easily, from
And can show that this bolt 3 is numbered or position, it is simultaneously emitted by sound or light or word etc.
Information warning, maintainer can be responded as early as possible and immediately screws tight this bolt 3 once again, so,
Not only can save the repair time and improve overhaul efficiency, moreover it is possible to improving the use peace of this bolt 3
Quan Xing, particularly when being applied to common carriage or work implements, more can be prevented effectively from
The work peace accident getting loose occurred because of bolt 3 or public danger.
Claims (6)
1. a bolt gets loose detection device, it is characterised in that: comprise:
One washer, made by metal material, it has one and wears with for a bolt
The through hole stretched；And
One testing circuit, including one in order to supply required electric power power supply supply element,
One electric bridge unit, and a difference amplifier, this electric bridge unit has one
One resistor, one and the second resistor of this first resistor in series, one and this China
3rd resistor of the two ends series connection at department's radially longest distance, and two outputs
Portion, wherein, this first and second resistor being serially connected with this be serially connected
Three resistors and washer are in parallel, and are in parallel with this power supply supply element, described
Output unit is to be connected between first and second resistor that is serially connected, and should
Between the 3rd resistor being serially connected and washer, this difference amplifier has two
The individual signal input part electrically connected with described output unit respectively, and signal output
Portion, this washer is by deformation signal produced by this bolt fastening force size variation whereby,
The impedance variation signal of this washer is become through this electric bridge cell translation, and by described signal
It is defeated by this signal after signal processing and amplifying that input unit inputs this difference amplifier
Go out portion's output, whether produce loosening for the fastening force judging this bolt.
Bolt the most according to claim 1 gets loose detection device, it is characterised in that: also wrap
The first plain conductor being located on this washer containing a spiral winding, this first plain conductor
Two ends lay respectively at the two ends at this washer radially longest distance, and this electric bridge unit
The 3rd resistor be that the two ends with this first plain conductor are in series, this China whereby
Department is tensile deformation by this bolt lock urgent pressure, makes this first plain conductor two ends
Between conducting path distance shorten, during this bolt looseness, this washer by compel pressure
Reduce and deformation quantity extends into original preseting length, this first plain conductor go-and-retum
Conducting path apart from elongated and produce deformation signal, and through this electric bridge cell translation
Become impedance variation signal, by exporting after this difference amplifier processing and amplifying.
Bolt the most according to claim 1 gets loose detection device, it is characterised in that: also wrap
Being connected with the flexible circuit board below this washer containing one, this flexible circuit board has one
Connect the perforation of the through hole of this washer, and the second metal that in bending continuously is led
Line, these the second plain conductor two ends lay respectively at should washer radially longest distance
The bottom surface at the two ends at place, and the 3rd resistor of this electric bridge unit is and this second gold medal
The two ends belonging to wire are in series, and this washer and this flexible circuit board are simultaneously by being somebody's turn to do whereby
The urgent pressure of bolt lock and synchronize deformation, the now biography of this second plain conductor go-and-retum
Guiding path distance shortens, during this bolt looseness, and this washer and this flexible circuit board institute
The urgent pressure being subject to reduces and deformation quantity tails off, the biography of this second plain conductor go-and-retum
The deformation signal that guiding path distance extends into original preseting length and produces is through this electric bridge
Cell translation becomes impedance to change signal, by this difference amplifier processing and amplifying
Rear output.
4. the get loose bolt of detection device of the bolt using claim 1 gets loose detection side
Method, it is characterised in that: comprise:
A washer that () is made of metal one is arranged on a screw rod of a bolt, and
This washer two ends at radial direction longest distance the electric bridge unit with this testing circuit
The 3rd resistor in series；And
B () utilizes the screw lock location of this bolt to force this washer pressurized to stretch and produce
Raw deformation signal, becomes impedance variation letter through this electric bridge cell translation of this testing circuit
Number and by after this difference amplifier processing and amplifying export, by this washer shape
Become the size of produced this washer impedance variation signal to judge the screw lock of this bolt
It is loosening whether power produces.
Bolt the most according to claim 4 gets loose detection method, it is characterised in that: in step
Suddenly, in (a), the first plain conductor that a spiral winding is located on this washer is also comprised, should
First plain conductor two ends lay respectively at the two ends at this washer radially longest distance,
And to make the 3rd resistor of this electric bridge unit be the two ends phase with this first plain conductor
Series connection；In step (b), the fastening force size variation of this bolt, make this washer produce
Raw different deformation quantity, and then make the path distance of this first plain conductor go-and-retum
Change and produce deformation signal, become impedance variation signal also through this electric bridge cell translation
By exporting after this difference amplifier processing and amplifying.
Bolt the most according to claim 4 gets loose detection method, it is characterised in that: in step
Suddenly in (a), also comprising one and be connected with the flexible circuit board below this washer, this is soft
Circuit board have one lay respectively in continuously bending and two ends to should washer
Second plain conductor of the bottom surface, two ends at distance, and the 3rd of this electric bridge unit the
Resistor is that the two ends with this second plain conductor are in series；In step (b), should
The fastening force size variation of bolt, makes this washer produce Tong Bu with this flexible circuit board
Deformation, and make the path distance of this second plain conductor go-and-retum change and produce shape
Varying signal, becomes impedance variation signal and by this differential letter through this electric bridge cell translation
Export after number amplifier processing and amplifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239216.8A CN106291716A (en) | 2015-05-12 | 2015-05-12 | Bolt gets loose and detects device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510239216.8A CN106291716A (en) | 2015-05-12 | 2015-05-12 | Bolt gets loose and detects device and detection method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106291716A true CN106291716A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510239216.8A Pending CN106291716A (en) | 2015-05-12 | 2015-05-12 | Bolt gets loose and detects device and detection method thereof |
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| CN107992911A (en) * | 2017-11-24 | 2018-05-04 | 燕山大学 | A kind of pressure detection method |
| CN108896285A (en) * | 2018-06-08 | 2018-11-27 | 远景能源（江苏）有限公司 | A kind of fastener monitoring arrangement |
| CN110146319A (en) * | 2019-05-30 | 2019-08-20 | 西北工业大学 | A kind of monitoring structural health conditions experimental provision carried towards cube star and method |
| CN110568288A (en) * | 2019-09-17 | 2019-12-13 | 河海大学 | Device and method for diagnosing loosening of screw of terminal strip of switch cabinet |
| CN110617951A (en) * | 2019-09-17 | 2019-12-27 | 广州中国科学院工业技术研究院 | Device and method for monitoring bolt loosening condition |
| CN111341075A (en) * | 2020-03-06 | 2020-06-26 | 国家电投集团徐闻风力发电有限公司 | Alarm system and alarm method for looseness of bolts of wind turbine tower |
| JPWO2020250382A1 (en) * | 2019-06-13 | 2020-12-17 |
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| CN203480037U (en) * | 2013-10-10 | 2014-03-12 | 国家电网公司 | Vibration frequency receiving apparatus for rapid detection of looseness of bolt in iron tower |
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| CN107234427A (en) * | 2017-06-19 | 2017-10-10 | 江苏亿能电气有限公司 | Busbar joint bolt tightens intelligent controlling device and method |
| CN107992911A (en) * | 2017-11-24 | 2018-05-04 | 燕山大学 | A kind of pressure detection method |
| CN107992911B (en) * | 2017-11-24 | 2019-12-06 | 燕山大学 | pressure detection method |
| CN108896285A (en) * | 2018-06-08 | 2018-11-27 | 远景能源（江苏）有限公司 | A kind of fastener monitoring arrangement |
| CN110146319A (en) * | 2019-05-30 | 2019-08-20 | 西北工业大学 | A kind of monitoring structural health conditions experimental provision carried towards cube star and method |
| CN110146319B (en) * | 2019-05-30 | 2021-07-09 | 西北工业大学 | Cube-carried structure health monitoring experimental device and method |
| JPWO2020250382A1 (en) * | 2019-06-13 | 2020-12-17 | ||
| WO2020250382A1 (en) * | 2019-06-13 | 2020-12-17 | 日本電信電話株式会社 | Loose detection device and loose detection method |
| CN110568288A (en) * | 2019-09-17 | 2019-12-13 | 河海大学 | Device and method for diagnosing loosening of screw of terminal strip of switch cabinet |
| CN110617951A (en) * | 2019-09-17 | 2019-12-27 | 广州中国科学院工业技术研究院 | Device and method for monitoring bolt loosening condition |
| CN111341075A (en) * | 2020-03-06 | 2020-06-26 | 国家电投集团徐闻风力发电有限公司 | Alarm system and alarm method for looseness of bolts of wind turbine tower |
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